Carrying device

Abstract

The invention discloses a carrying device which can be suitable for carrying heavy objects in a low space and a narrow space. The carrying device comprises a plurality of jacking mechanisms and a connecting frame, one of the jacking mechanisms can stretch out and draw back, the connecting frame connects the jacking mechanisms and comprises a first support and a second support, a part of the jacking mechanisms are arranged on the first support, and the other part of the jacking mechanisms are arranged on the second support. The first support and the second support are movably connected, and the first support and the second support at least have a first pose and a second pose when moving relatively; in the first posture, the first bracket and the second bracket are close to each other; and in the second posture, the first bracket is separated from the second bracket.

Description

Technical Field

[0001] The present application relates to the technical field of material handling, and in particular to a handling device. Background Art

[0002] In the process of material handling, some handling devices are needed to improve the efficiency and capacity of handling. However, for large household appliances such as refrigerators and washing machines, the bottom space is short, and traditional handling tools are difficult to reach the bottom for handling. In addition, these household appliances often need to be embedded in customized installation spaces (such as cabinets and walls), which further reduces the operating space. Therefore, this type of household appliances currently require manual handling. Therefore, there is an urgent need to provide a new handling device that can be used for the handling of heavy objects in low and narrow spaces. At the same time, for staff who need to install and transport household appliances, a small-volume handling equipment can greatly improve the convenience of carrying. Summary of the Invention

[0003] The present application provides a transport device that can greatly improve the convenience of carrying.

[0004] The present application provides a transport device, including multiple jacking mechanisms and a connecting frame, wherein one of the multiple jacking mechanisms is capable of extension and retraction; the connecting frame connects the multiple jacking mechanisms, and the connecting frame includes a first bracket and a second bracket. A part of the multiple jacking mechanisms is arranged on the first bracket, and the other part is arranged on the second bracket. The first bracket and the second bracket are movably connected, and when the first bracket and the second bracket move relative to each other, they have at least a first posture and a second posture; in the first posture, the first bracket and the second bracket are close to each other; in the second posture, the first bracket and the second bracket are separated.

[0005] In the technical solution of the embodiment of the present application, when transportation is required, the first bracket and the second bracket are separated and placed in the second position. The connecting bracket is first extended under the target object to be transported, and then the piston lifting assembly can drive the roller assembly to move in the first direction, thereby carrying and lifting the target object to be transported. The entire target object is off the ground, and the roller assembly can be rolled with the ground to facilitate transportation and displacement. The connecting bracket can be set to an openable and closable structure. When the target object is not needed to be transported, the first bracket and the second bracket are brought close together and merged into the first position, which is convenient for storage and carrying, and can greatly improve the convenience of carrying. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to denote the same components. In the drawings:

[0007] Figure 1 A schematic diagram of the first posture structure of the first solution of the transport device provided in an embodiment of the present application;

[0008] Figure 2 A schematic structural diagram of a first embodiment of the transport device provided in an embodiment of the present application from a bottom perspective;

[0009] Figure 3 A schematic structural diagram of the lifting mechanism of the handling device provided in an embodiment of the present application;

[0010] Figure 4 A schematic diagram of the exploded structure of the lifting mechanism of the handling device provided in an embodiment of the present application;

[0011] Figure 5 A cross-sectional schematic diagram of the lifting mechanism of the handling device provided by an embodiment of the present application in a first state;

[0012] Figure 6 A schematic cross-sectional view of the lifting mechanism of the handling device provided by an embodiment of the present application in a second state;

[0013] Figure 7 A schematic structural diagram of a first piston member of a lifting mechanism of a handling device provided in an embodiment of the present application;

[0014] Figure 8 A schematic structural diagram of a second piston member of a lifting mechanism of a handling device provided in an embodiment of the present application;

[0015] Figure 9 A schematic diagram of the second posture structure of the first solution of the transport device provided in an embodiment of the present application;

[0016] Figure 10 A schematic diagram of the partial structure of the first solution of the transport device provided in an embodiment of the present application;

[0017] Figure 11 A schematic diagram of the first posture structure of the second solution of the transport device provided in an embodiment of the present application;

[0018] Figure 12 A schematic diagram of a second posture structure of the second solution of the transport device provided in an embodiment of the present application;

[0019] Figure 13 A schematic diagram of the structure of the second solution of the transport device provided in an embodiment of the present application from a bottom perspective;

[0020] Figure 14 A schematic diagram of the first posture structure of the third solution of the transport device provided in an embodiment of the present application;

[0021] Figure 15 A schematic diagram of the second posture structure of the third solution of the transport device provided in an embodiment of the present application;

[0022] Figure 16 A schematic structural diagram of a first embodiment of the power source of the transport device provided in an embodiment of the present application;

[0023] Figure 17 One of the cross-sectional schematic diagrams of the first solution of the power source of the transport device provided in an embodiment of the present application;

[0024] Figure 18 A second cross-sectional schematic diagram of the first embodiment of the power source of the transport device provided in an embodiment of the present application;

[0025] Figure 19 A schematic structural diagram of a second embodiment of the power source of the transport device provided in an embodiment of the present application;

[0026] Figure 20 A cross-sectional schematic diagram of a second solution of a power source for a transport device provided in an embodiment of the present application;

[0027] Figure 21 A partial cross-sectional schematic diagram of a second solution of a power source for a transport device provided in an embodiment of the present application;

[0028] Figure 22 A schematic structural diagram of a pressure-maintaining mechanism of a transport device provided in an embodiment of the present application;

[0029] Figure 23 A schematic diagram of the exploded structure of the pressure-maintaining mechanism of the transport device provided in an embodiment of the present application;

[0030] Figure 24 A schematic cross-sectional view of a pressure-maintaining mechanism of a transport device provided in an embodiment of the present application;

[0031] Figure 25 A schematic structural diagram of a pressure release mechanism of a transport device provided in an embodiment of the present application;

[0032] Figure 26 This is a cross-sectional schematic diagram of a pressure release mechanism of a transport device provided in an embodiment of the present application;

[0033] Figure 27 The second cross-sectional schematic diagram of the pressure release mechanism of the transport device provided in an embodiment of the present application;

[0034] Figure 28 A schematic structural diagram of a first embodiment of the recovery mechanism of the transport device provided in an embodiment of the present application;

[0035] Figure 29A cross-sectional schematic diagram of a first embodiment of the recovery mechanism of the transport device provided in an embodiment of the present application;

[0036] Figure 30 A schematic structural diagram of a second embodiment of the recovery mechanism of the transport device provided in an embodiment of the present application;

[0037] Figure 31 A cross-sectional schematic diagram of a second embodiment of the recovery mechanism of the transport device provided in an embodiment of the present application.

[0038] Description of Reference Numerals

[0039] 1-Connecting frame; 11-Frame body; 13-First bracket; 14-Second bracket; 15-Link mechanism; 1511-First connecting rod; 1512-Second connecting rod; 152-Linking rod; 16-Hinged mechanism; 161-First hinge; 162-Second hinge; 17-Slide; 18-Blocking member; 181-Handle member; 19-Jack mounting hole; 2-Jack mechanism; 21-Piston lifting assembly; 211-Pressure chamber; 212-Connecting port; 213-Piston cylinder; 214-First opening; 215-Baffle; 216-Recessed portion; 221-Piston member; 222-First piston member; 2221-Piston hole; 2222-Entry slot; 2223-First sealing member Sealing structure; 2224-first limiting part; 223-second piston member; 2231-bearing groove; 2232-second limiting part; 2233-third limiting part; 3-roller assembly; 31-roller; 32-roller bracket; 33-plane bearing; 332-ball; 4-transmission pipeline; 41-adapter; 5-power source; 51-medium base; 511-medium cavity; 512-circulation port; 513-medium injection port; 514-sealing plug; 52-force application assembly; 521-extrusion member; 522-force application rod; 53-self-locking structure; 531-hook; 5311-hook part; 532-slot; 533-hook recovery member; 534-hook unlocking member; 53 5- Positioning pin; 536- Positioning hole; 537- Self-locking hole; 538- Positioning pin recovery member; 539- Positioning pin unlocking member; 54- Pump; 55- Reversing valve; 551- Valve body; 5511- Reversing chamber; 5512- Pump inlet; 5513- Pump outlet; 5514- Medium inlet; 5515- Medium outlet; 552- Reversing plunger; 5521- Return hole; 5522- First connecting portion; 5523- Second connecting portion; 553- Reversing power member; 6- Pressure-maintaining mechanism; 61- Pressure-maintaining housing; 611- Passageway inlet; 612- Passageway outlet; 613- Pressure relief port; 614- Pressure-maintaining seat; 615- Sealing seat; 616- Pressure-maintaining cover; 62 - valve core component; 63- pressure maintaining and restoring component; 64- pressure maintaining chamber; 7- pressure releasing mechanism; 71- pressure releasing shell; 711- pressure releasing installation port; 72- pressure releasing component; 721- pressure releasing port; 73- pressure releasing accommodating chamber; 731- circulation chamber; 732- pressure releasing chamber; 74- pressure releasing and restoring component; 8- recovery mechanism; 81- recovery shell; 811- recovery port; 812- recovery operation port; 82- recovery piston; 83- recovery chamber; 84- recovery and restoring component; 85- crank-connecting rod mechanism; 851- crank pedal; 852- recovery connecting rod; 853- guide seat; 8531- guide groove; a- first direction; b- second direction; c- third direction; m- first distance; n- second distance. DETAILED DESCRIPTION

[0040] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0042] In the description of the embodiments of this application, the technical terms "first," "second," "third," etc. are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise specifically defined.

[0043] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0044] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0045] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be understood as limitations on the embodiments of the present application.

[0046] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0047] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the technical term "contact" should be understood in a broad sense, and can be direct contact, contact through an intermediate medium layer, contact with essentially no interaction force between the two contacting parties, or contact with interaction force between the two contacting parties.

[0048] Below, this application is described in detail.

[0049] In scenarios such as industrial production and equipment installation, materials need to be transported. Existing material handling equipment generally includes oxen, forklifts, etc. However, for some specific application scenarios, such as the installation and transportation of home appliances, general handling equipment is not suitable due to its own size and design. For example, for the transportation of embedded electrical appliances, the installation space of the appliances is small and compact, and the only force points for the appliances are the front side walls and the bottom. The front is only convenient for pushing in, and it is difficult to perform other operations. The height space at the bottom of the appliances is generally narrow, and the existing handling equipment cannot adapt to it, and thus cannot be transported.

[0050] At the same time, for workers who need to install and transport home appliances, a small-volume transport device can greatly improve the convenience of carrying. Therefore, it is very necessary to provide a storable transport device.

[0051] Based on this, the present application provides a transport device that can adapt to transport scenarios with limited space and can greatly improve the convenience of carrying.

[0052] For example, refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4The handling device provided in the present application includes multiple lifting mechanisms 2 and a connecting frame 1, one of the multiple lifting mechanisms 2 can be extended and retracted; the connecting frame 1 connects the multiple lifting mechanisms 2; the connecting frame 1 includes a first bracket 13 and a second bracket 14, a part of the multiple lifting mechanisms 2 is arranged on the first bracket 13, and the other part is arranged on the second bracket 14, the first bracket 13 and the second bracket 14 are movably connected, and when the first bracket 13 and the second bracket 14 move relative to each other, they have at least a first posture and a second posture; in the first posture, the first bracket 13 and the second bracket 14 are close; in the second posture, the first bracket 13 and the second bracket 14 are separated.

[0053] In the technical solution of the embodiment of the present application, when transportation is required, the first bracket 13 and the second bracket 14 are separated and placed in the second position. The connecting frame 1 is first extended under the target object to be transported, and then the piston lifting assembly 21 can drive the roller assembly 3 to move along the first direction, thereby carrying and lifting the target object to be transported. The entire target object is off the ground, and the roller assembly 3 can be rolled with the ground to facilitate transportation and displacement. The connecting frame 1 can be set to an openable and closable structure. When the target object is not needed to be transported, the first bracket 13 and the second bracket 14 are brought close together and merged into the first position, which is convenient for storage and carrying, and can greatly improve the convenience of carrying.

[0054] In some embodiments of the present application, a portion of the plurality of lifting mechanisms 2 is disposed at an end of the first bracket 13 , and another portion of the plurality of lifting mechanisms 2 is disposed at an end of the second bracket 14 .

[0055] The end of the first bracket 13 and the end of the second bracket 14 include one end or both ends. That is, the portion of the lifting mechanism 2 provided at the end of the first bracket 13 can be provided at only one end of the first bracket 13 or at both ends of the first bracket 13.

[0056] The other part of the lifting mechanism 2 provided at the end of the second bracket 14 may be provided at only one end of the second bracket 14 , or may be provided at both ends of the second bracket 14 .

[0057] In order to be suitable for carrying heavy objects in low and narrow spaces, for example, refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 The handling device provided in this application, the jacking mechanism 2 includes a piston lifting assembly 21 and a roller assembly 3, the piston lifting assembly 21 can be extended and retracted along the first direction a, the piston lifting assembly 21 is installed on the connecting frame 1, the telescopic end of the piston lifting assembly 21 is connected to the roller assembly 3, wherein the piston lifting assembly 21 is in a retracted state, and the height of the jacking mechanism 2 is less than 30 mm.

[0058] In the technical solution of the embodiment of the present application, the jacking mechanism 2 is used to carry the target object to be transported, and the connecting frame 1 is used to connect multiple jacking mechanisms 2. Multiple jacking mechanisms 2 are provided on the connecting frame 1. Specifically, one of the multiple jacking mechanisms 2 includes a piston lifting assembly 21 and a roller assembly 3. The roller assembly 3 contacts the ground, which facilitates the movement of the entire connecting frame 1 and the target object carried by the jacking mechanism 2. When transportation is required, the piston lifting assembly 21 is first retracted, and the transport device is extended under the target object to be transported. Then, the piston lifting assembly 21 can drive the roller assembly 3 to move along the first direction a, so that the transport device can carry and lift the target object to be transported, and the entire target object leaves the ground. Through the rolling of the roller assembly 3 and the ground, it can be easily transported and displaced. Moreover, when the piston lifting assembly 21 is in the retracted state, the height of the jacking mechanism 2 is less than 30 mm. The piston lifting assembly 21 of the jacking mechanism 2 is connected to the connecting frame 1, and the roller assembly 3 is arranged at one end of the piston lifting assembly 21, so that the overall height of the transport device can have a large variation range, and by designing the lifting distance of the jacking mechanism 2, it is possible to achieve the transport of target objects with different ground clearances; since the piston lifting assembly 21 is in a retracted state, the height of the jacking mechanism 2 is less than 30 mm, which can be used for transporting heavy objects in low spaces and narrow spaces.

[0059] The target object may be equipment or materials to be transported, such as refrigerators, washing machines, vertical air conditioners, etc. The piston lifting assembly 21 can achieve lifting by introducing a medium, wherein the medium may be various types of media that can achieve thrust, including gaseous media and liquid media. The gaseous medium may be compressed air; the liquid medium may be hydraulic oil, water glycol, glycerin, water, etc. Sealed sliding means that the contact position of the two components can always remain sealed and can also slide. The sealable sliding of this application, with reference to structures such as cylinders, hydraulic cylinders, and syringes, can achieve a slidable connection with the inner wall of the chamber through a flexible piston head.

[0060] Since the bottom space height of the target objects such as household appliances is very narrow, in order to make the handling device have a sufficiently small thickness before jacking to adapt to the handling of the target objects with narrow height, the piston lifting assembly 21 is in the retracted state, and the height of the jacking mechanism 2 should be as small as possible. When the piston lifting assembly 21 is in the retracted state, the height of the jacking mechanism 2 is less than 30mm. When the piston lifting assembly 21 is in the retracted state, the jacking mechanism 2 can have a variety of possible sizes, refer to Figure 5The first distance m can be, for example, less than 28 mm, less than 25 mm, less than 22 mm, less than 20 mm, less than 18 mm, less than 15 mm, etc., thereby being suitable for transporting objects of narrow heights. When the piston lifting assembly 21 is in the retracted state, the smaller the height of the lifting mechanism 2, the more suitable the transport device is for transporting objects with smaller bottom spaces.

[0061] At the same time, the lifting stroke of the piston lifting assembly 21 can also be set differently, for example, it can be greater than 10 mm, greater than 12 mm, greater than 13 mm, greater than 14 mm, greater than 15 mm, greater than 18 mm, etc. It should be noted that the lifting stroke of the piston lifting assembly 21 refers to the height value that the piston lifting assembly 21 can change from the retracted state to the maximum lifting state, that is, the maximum lifting range of the piston lifting assembly 21. This lifting stroke can directly affect the maximum height that can be lifted.

[0062] It should be noted that the lifting stroke of the piston lifting assembly 21 can be less than the height of the lifting mechanism 2 when the piston lifting assembly 21 is in the retracted state. The greater the lifting stroke of the piston lifting assembly 21, the larger the bottom space range of the target object suitable for the handling device.

[0063] In order to ensure that the handling device has a sufficient lifting height within a limited structural height to ensure that the target object can be lifted, in some embodiments, this can be achieved by increasing the lifting stroke of the piston lifting assembly 21. For example, the sliding length of the piston cylinder 213 can be increased; the length of the piston member 221 itself can be increased, or a multi-stage piston can be provided.

[0064] Reference Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 In some embodiments, the piston lifting assembly 2122 includes a piston cylinder 213 and at least two piston members 221. Adjacent piston members 221 are connected in a sealing and sliding manner along a first direction a. The piston cylinder 213 is connected to the connecting frame 1. The piston member 221 close to the piston cylinder 213 is connected in a sealing and sliding manner to the piston cylinder 213, and the piston member 221 away from the piston cylinder 213 is connected to the roller assembly 3.

[0065] Reference Figure 4 and Figure 6 The piston cylinder 213 defines a pressure chamber 211. The piston cylinder 213 has a first opening 214 that communicates with the pressure chamber 211. The upper end of the piston member 221 is sealably and slidably connected to the pressure chamber 211 through the first opening 214. In the retracted state, the piston member 221 retracts into the pressure chamber 211. In the raised state, the piston member 221 moves out of the pressure chamber 211.

[0066] The piston lifting assembly 21 includes at least two piston members 221 , that is, the piston lifting assembly 21 may have two, three or even more piston members 221 .

[0067] The embodiment of the present application can achieve multi-stage piston lifting through the sealable sliding connection of at least two piston members 221, greatly improving the lifting stroke, and can reduce the overall height when retracted.

[0068] Adjacent piston members 221 can be connected in a sealable and slidable manner along the first direction a, allowing for further sealable sliding between adjacent piston members 221, thereby increasing the lifting stroke. Furthermore, each set of adjacent piston members 221 can provide a certain lifting stroke. In other words, the lifting member 22 has a multi-stage piston structure. By increasing the number of stages of piston members 221, the lifting stroke of the jacking mechanism 2 can be further increased, further broadening the application scenarios of the handling device.

[0069] For the first piston member 222 and the second piston member 223 in the adjacent connected piston members 221, the first piston member 222 is provided with a piston hole 2221 passing through along the first direction a, and one end of the first piston member 222 is provided with a first limiting portion 2224; the first end of the second piston member 223 is provided with a second limiting portion 2232, the second limiting portion 2232 is passed through the piston hole 2221 and is sealed and slidably connected to the first piston member 222, and the second end of the second piston member 223 is provided with a third limiting portion 2233, the first limiting portion 2224 is located between the second limiting portion 2232 and the third limiting portion 2233, wherein, when the first piston member 222 and the second piston member 223 are in a retracted state, the third limiting portion 2233 abuts against the first limiting portion 2224, and the end of the first piston member 222 away from the first limiting portion 2224 is flush with the first end of the second piston member 223.

[0070] When multiple pistons are connected, a piston hole 2221 can be provided in the upper piston member 221, extending therethrough. This allows the lower piston member 221 to be retracted as much as possible within the piston hole 2221 in the retracted state, further reducing the height. Here, because the first piston member 222 is provided with a piston hole 2221 extending along the first direction a, the second position-limiting portion 2232 of the second piston member 223 is provided within the piston hole 2221 and is in sealing and sliding connection with the first piston member 222. In the retracted state, the second position-limiting portion 2232 can be retracted within the piston hole 2221 along the first direction a until it is flush with the upper end of the first piston member 221, thereby further reducing the overall height of the transport device in the retracted state.

[0071] In order to facilitate the medium to push the first piston member 222 to move, refer to Figure 6 and Figure 7The upper end surface of the first piston member 222 is provided with an entry groove 2222. Thus, when the first piston member 222 and the second piston member 223 are in a retracted state, the upper end surface of the first piston member 222 can abut against the upper inner wall of the piston cylinder 21. At this time, if lifting is required, the medium can communicate with the piston hole 2221 through the entry groove 2222. The provision of the entry groove 2222 on the upper end surface of the first piston member 222 facilitates the medium to apply force to the first piston member 222, thereby pushing the first piston member 222 to move in the first direction a.

[0072] In order to facilitate the medium to push the first piston member 222 , the entry groove 2222 may be provided on the upper end surface of the first piston member 222 .

[0073] On this basis, in order to enable the medium to exert force on multiple positions of the first piston member 222, it is more convenient for the flow of the medium and the movement of the first piston member 222. Figure 7 In some embodiments, there are at least two entry grooves 2222 , which are spaced apart along the upper end surface of the first piston member 222 .

[0074] At least two entry grooves 2222 can be provided, spaced apart along the upper end surface of the first piston member 222. This allows the medium to exert force on multiple locations on the upper end surface of the first piston member 222, further facilitating piston movement. Furthermore, the entry grooves 2222 can be evenly spaced apart along the upper end surface of the first piston member 222, ensuring that the thrust of the medium on the first piston member 222 is evenly balanced, thereby preventing the first piston member 222 from becoming stuck due to uneven force.

[0075] Reference Figure 5 、 Figure 6 、 Figure 8 The upper end surface of the second piston member 223 can seal the piston hole 2221 of the first piston member 222, so that the pressure chamber 211 and the piston hole 2221 can jointly form a space in which the medium can be accommodated and flow. When the first piston member 222 and the second piston member 223 are in the retracted state, the upper end surface of the second piston member 223 can also be in contact with the end wall of the piston cylinder 213 (the upper inner wall defining the pressure chamber 211). In this case, in order to facilitate the medium to apply pressure to the second piston member 223, in some embodiments, the upper end surface of the second piston member 223 is provided with a bearing groove 2231. During the transition from the retracted state to the lifted state, the medium entering the piston hole 2221 through the entry groove 2222 at least partially acts on the bearing groove 2231 to push the second piston member 223 to move along the first direction a.

[0076] When the medium enters the pressure chamber 211, a portion of the medium flows to the upper end surface of the first piston member 222 through the entry groove 2222, pushing the first piston member 222 to move along the first direction a, and another portion of the medium can enter the bearing groove 2231 on the upper end surface of the second piston member 223 through the entry groove 2222, pushing the second piston member 223 to move along the first direction a.

[0077] It should be noted that the medium may simultaneously push the first piston member 222 and the second piston member 223 in the first direction a, or may first push the first piston member 222 a certain distance and then push the second piston member 223, or may first push the first piston member 222 a certain distance in the first direction a and then act on the bearing groove 2231 to push the second piston member 223 in the first direction a. It is understood that as long as the multi-stage piston member 221 can be opened to the desired lifting height, the specific movement sequence can be designed and implemented according to specific needs and is not limited in this application.

[0078] In order to make the pressure of the medium on the second piston 223 uniform, facilitate the movement of the second piston 223 and prevent it from getting stuck. Figure 8 In some embodiments, the bearing groove 2231 is an annular groove arranged around the upper surface of the second piston member 223 .

[0079] During the movement of the first piston member 222 and the second piston member 223 along the first direction a, the maximum position of their movement can be limited to prevent the first piston member 222 from escaping from the piston cylinder 213 or the second piston member 223 from escaping from the piston hole 2221 .

[0080] Specifically, refer to Figure 4 and Figure 6 In some embodiments, the piston lifting assembly 21 further includes a baffle 215 , which is disposed below the piston cylinder 213 . The outer wall of the first piston member 222 has a first sealing structure 2223 in the radial direction near the upper end.

[0081] The first piston member 222 is disposed in the pressure chamber 211 via a first sealing structure 2223 , and the second piston member 223 is disposed in the piston hole 2221 in a sealing and slidable manner via a second limiting portion 2232 .

[0082] During the transition from the retracted state to the lifted state, the second limiting portion 2232 is blocked by the first limiting portion 2224 and is limited in the piston hole 2221 to prevent the second piston member 223 from escaping from the piston hole 2221 of the first piston member 222 .

[0083] During the process of transitioning from the lifting state to the retracted state, the third limiting portion 2233 on the lower end surface of the second piston member 223 is blocked by the first limiting portion 2224, and the second piston member 223 will not be completely retracted into the piston hole 2221 of the first piston member 222, and the third limiting portion 2233 can abut against the joint between the first limiting portion 2224 and the second piston member 223, which can play a protective role.

[0084] It should be noted that the specific structures of the first sealing structure 2223 and the second limiting portion 2232 can be set according to actual needs. For example, refer to Figure 6 、 Figure 7 The first sealing structure 2223 is formed on the outer wall of the first piston member 222 with two radially protruding ribs, which define an annular groove inside. A sealing gasket is installed in the annular groove. The sealing gasket is confined in the annular groove and can be sealed and slidably connected to the piston cylinder 213 through the sealing gasket. Similarly, refer to Figure 6 、 Figure 8 The second limiting portion 2232 can also be a solution of adapting a sealing gasket in the annular groove, which will not be repeated here.

[0085] When a baffle 215 is provided below the piston cylinder 213, the first sealing structure 2223 is confined within the piston cylinder 213; when a first limiting portion 2224 is provided below the first piston member 222 and a third limiting portion 2233 is provided below the second piston member 223, the first limiting portion 2224 below the first piston is confined between the second limiting portion 2232 and the third limiting portion 2233. In order to facilitate assembly, some components can be provided as a detachable structure. For details, refer to Figure 4 and Figure 6 In some embodiments, the baffle 215 and the piston cylinder 213 are detachably connected, and / or the third limiting portion 2233 and the second piston member 223 are detachably connected.

[0086] Since the baffle 215 and the piston cylinder 213 are detachable, when assembling the first piston member 222, the first piston member 222 can be first inserted into the piston cylinder 213 without the baffle 215 fixed, and then the baffle 215 can be fixed under the piston cylinder 213 to complete the assembly of the first piston member 222 and the piston cylinder 213.

[0087] Since the third limiting portion 2233 and the second piston member 223 are detachable, when assembling the second piston member 223, the second piston member 223 without the third limiting portion 2233 fixed can be installed from the upper end of the first piston member 222, and then the third limiting portion 2233 can be fixed at the lower end of the second piston member 223 to complete the assembly of the second piston member 223 and the first piston member 222.

[0088] Reference Figure 4In the embodiment of the present application, both the baffle 215 and the third limiting portion 2233 may be annular structures. The baffle 215 and the piston cylinder 213 are secured via multiple fastening structures. The securing positions of the baffle 215 and the piston cylinder 213 are similar to those of a flange. Multiple fixing points are provided at intervals around the baffle 215 and the periphery of the step. Furthermore, these fixing points can be secured to corresponding positions on the connecting frame 1. That is, while the baffle 215 and the piston cylinder 213 are secured, the entire lifting mechanism 2 can also be secured to the connecting frame 1. Of course, the third limiting portion 2233 and the second piston member 223 may also be secured via fasteners. The fastener securing position may be provided in an area where the projections of the third limiting portion 2233 and the second piston member 223 along the first direction a overlap. Furthermore, the fastener mounting hole on the side of the third limiting portion 2233 facing away from the second piston member 223 may be a countersunk hole. Thus, the end of the fastener may not be higher than the side of the third limiting portion 2233 facing away from the second piston member 223.

[0089] In some embodiments of the present application, reference is made to Figure 5 The piston cylinder 213 is provided with a communication port 212 on its circumferentially distributed side wall, and the communication port 212 is used to connect to a power source.

[0090] The communication port 212 is provided on the side wall of the pressure chamber 211 distributed along the circumferential direction, which does not affect the overall height of the transport device and facilitates transport.

[0091] The communication port 212 is disposed radially outside the piston cylinder 213, and along the first direction a, the height of the communication port 212 may be smaller than the thickness of the piston cylinder 213. Figure 5 Here, the height of the communication port 212 refers to the maximum distance that the outer contour of the physical structure forming the communication port 212 can occupy along the first direction a, that is, Figure 5 The distance h in .

[0092] The roller assembly 3 of the embodiment of the present application can be implemented in a variety of ways. For example, it can be a wheel, a sphere, or other related structures that can achieve rolling. During transportation, the transportation path and direction may be uncertain and may require turning at any time. To facilitate transportation and prevent the roller assembly 3 from getting stuck, the roller assembly 3 can be configured to have a structure that can roll in multiple directions.

[0093] Reference Figure 3 、 Figure 4 、 Figure 5 、 Figure 6, shows an implementation method of a roller assembly 3, the roller assembly 3 includes a roller 31 and a roller bracket 32, one end of the roller bracket 32 ​​is rotatably connected to the piston lifting assembly 21, the rotation axis of the roller bracket 32 ​​is parallel to the first direction a, the roller 31 is rotatably connected to the other end of the roller bracket 32, the rotation axis of the roller 31 is perpendicular to the first direction a, and the rotation axis of the roller 31 and the rotation axis of the roller bracket 32 ​​are arranged at intervals.

[0094] When the transport device moves, the roller bracket 32 ​​can rotate according to the size of the friction force of the roller 31. The roller bracket 32 ​​is equivalent to the following state. At the lower end of the roller bracket 32, the roller 31 can roll smoothly, thereby achieving the effect of a universal wheel, so that the target object can be moved in any direction when being transported, which is convenient for transportation.

[0095] The rotating axis of the roller 31 and the rotating axis of the roller bracket 32 ​​are arranged at intervals, that is, the rotating axis of the roller 31 and the rotating axis of the roller bracket 32 ​​are not directly stacked in the first direction a, which is convenient for arrangement in the height direction, can reduce the overall height required for the layout, and reduce the impact on the height of the entire transport device.

[0096] The roller assembly 3 further includes a plane bearing 33 , and one end of the roller bracket 32 ​​is rotatably connected to the piston lifting assembly 21 via the plane bearing 33 .

[0097] It should be noted that a bearing can be directly arranged between the roller bracket 32 ​​and the lifting member 22. Compared with other forms of bearings, the plane bearing 33 can achieve smooth rotation along the first direction a with a smaller thickness space, and the structure is simple and easy to implement, which reduces the number of components, is conducive to reducing the overall height of the transport device, and further improves applicability.

[0098] Reference Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 In the roller assembly 3 of the embodiment of the present application, the roller bracket 32 ​​can be shaped like an L-shaped structure. The first end of the roller bracket 32 ​​is rotatably connected to the end of the second piston member 223; the second end of the roller bracket 32 ​​is connected to the roller 31. The first end of the roller bracket 32 ​​can be a disc-shaped structure, which, together with the end of the second piston member 223, forms a chamber for mounting a plurality of balls 332, forming a plane bearing 33. The portion of the roller bracket 32 ​​connected to the disc-shaped structure can be two ribs, forming a space within which the roller 31 can be mounted, reducing weight and facilitating installation of the roller 31. The roller 31 can be secured by a pin that passes through the two ribs and extends through the center axis of the roller 31.

[0099] Reference Figure 5 and Figure 6In order to further reduce the height of the jacking mechanism 2 in the retracted state, in some embodiments, one end of the piston lifting assembly 21 connected to the roller assembly 3 has a recessed portion 216, and the roller assembly 3 is arranged in the recessed portion 216.

[0100] In this way, at least a portion of the roller assembly 3 is located in the recessed portion 216 , which is beneficial for reducing the height of the lifting mechanism 2 in the retracted state and improving the applicability of the transport device.

[0101] Reference Figure 1 In some embodiments, the connecting frame 1 includes a frame body 11 , and the frame body 11 is provided with at least three jacking mechanisms 2 .

[0102] The connecting frame 1 is used to connect the jacking mechanisms 2. The arrangement of at least three jacking mechanisms 2 can support at least three positions of the target object, thereby improving the balance of the balanced load-bearing target object and preventing the target object from tipping over.

[0103] Of course, under the premise of improving stability, the number of jacking mechanisms 2 can be four, five, six, etc., and they can be evenly arranged to provide further stable support. Figure 1 and Figure 2 The frame 11 is connected to four jacking mechanisms 2, which are arranged near the four ends of the connecting frame 1 and can provide stable support.

[0104] The handling device is in the lowest overall thickness state when in the retracted state, and in the highest overall thickness state when in the raised state. In order to facilitate the handling device to be able to easily extend under the target object in the retracted state, refer to Figure 5 When the transport device is in the retracted state, the rollers 31 of the roller assembly 3 at least partially protrude from the bottom of the connecting frame 1. That is, in this embodiment, the overall thickness of the transport device in both the retracted and raised states is the distance from the lower end of the rollers 31 of the roller assembly 3 to the upper surface of the support.

[0105] The lifting mechanism 2 can be fixed on the side of the connecting frame 1, or the lifting mechanism 2 can be fixed in a through hole opened on the connecting frame 1, which is beneficial to reducing the overall height of the transport device.

[0106] Reference Figure 9 、 Figure 10 In some embodiments of the present application, a jacking mounting hole 19 is opened on the connecting frame 1, and the jacking mechanism 2 is passed through the jacking mounting hole 19 and fixed on the connecting frame 1.

[0107] By passing the lifting mechanism 2 through the hole of the connecting frame 1, the overall thickness of the transport device can be reduced, thereby further improving the applicability.

[0108] Some objects themselves are also provided with legs that can be adjusted in height, for example, refrigerators, washing machines, etc., which makes the ground clearance of the object itself have an adjustable range. Based on this, in some embodiments of the present application, the overall adjustable height is set accordingly.

[0109] Specifically, refer to Figure 5 The minimum distance from the upper surface of the lifting mechanism 2 to the lower end of the roller assembly 3 is the first distance m, refer to Figure 6 The maximum distance from the upper surface of the lifting mechanism 2 to the lower end of the roller assembly 3 is the second distance n, the minimum distance between the lower surface of the loaded target and the ground is the third distance, and the maximum distance is the fourth distance; wherein, the first distance m is smaller than the third distance, and the second distance n is larger than the third distance and smaller than the fourth distance.

[0110] Since the first distance m is smaller than the third distance, the transport device can smoothly enter under the target object at its minimum height; since the second distance n is larger than the third distance, the transport device can smoothly lift the target object and hold it up for easy transport; since the second distance n is smaller than the fourth distance, when the transport device transports the target object to the target position, the target object can be adjusted to the fourth distance, so that the target object can be directly supported on the ground by itself, and the transport device can also be easily taken out.

[0111] For example, the first distance m from the upper surface of the lifting mechanism 2 to the lower end of the roller assembly 3 can be 15.7 mm, and the second distance n can be 28.9 mm, that is, the lifting stroke is 13.2 mm. The third distance between the lower surface of the supported target and the ground can be 16.7 mm, and the fourth distance can be 29.7 mm. Of course, this is just a special example. It is understood that based on applicability, the above-mentioned first distance m, second distance n, third distance, and fourth distance can all be adjusted within a certain range, for example, they can fluctuate within the above-mentioned dimensions by 0.1-1.5 mm.

[0112] When transporting or installing home appliances, workers often need to carry a transport device to the site and then take it away after the transport is completed. Therefore, the portability and storage properties of the transport device are particularly important.

[0113] To facilitate portability and storage, the connecting frame 1 of the embodiment of the present application can be configured to a certain degree, thereby changing the space occupied and facilitating portability and storage. Specifically, this can be achieved through various methods, such as folding, rotation, translation, and elastic deformation. Furthermore, the connecting frame 1 can be composed of at least two separate structures, which is not a limitation of the present application.

[0114] For the convenience of description, the following description is made by taking the solution of the connecting frame 1 including two separate structures as an example. Figure 1 and Figure 9 In some embodiments, the connecting frame 1 includes a first bracket 13 and a second bracket 14, a part of the multiple lifting mechanisms 2 is arranged on the first bracket 13, and the other part is arranged on the second bracket 14, the first bracket 13 and the second bracket 14 are movably connected, and when the first bracket 13 and the second bracket 14 move relative to each other, they have at least a first posture and a second posture; in the first posture, the first bracket 13 and the second bracket 14 are close to each other; in the second posture, the first bracket 13 and the second bracket 14 are separated.

[0115] For example, refer to Figure 1 In the first position, the first bracket 13 and the second bracket 14 can be attached side by side along the third direction c; Figure 9 In the second posture, the first bracket 13 and the second bracket 14 are separated from each other to a maximum distance along the third direction c;

[0116] The second direction b and the third direction c are perpendicular to each other, and both are perpendicular to the first direction a.

[0117] In this way, the connecting frame 1 can be configured to be openable and closable. When the target object is not needed for transport, it can be folded into the first position for easy storage and carrying. When the target object is needed for transport, it can be opened to the second position for easy loading. In addition, the first bracket 13 and the second bracket 14 can be transformed along the third direction c. The change of position during transport does not take up additional space, making it more convenient to operate.

[0118] The first bracket 13 and the second bracket 14 are movably connected, and may be hinged, flexibly connected, etc. Of course, having at least the first and second postures means that in some solutions, there are only the first and second postures, while in other solutions, there may be more than three postures, such as a third posture, a fourth posture, etc.

[0119] In some embodiments, when the first bracket 13 and the second bracket 14 move relative to each other, a third posture is also included; in the third posture, the distance between the first bracket 13 and the second bracket 14 is smaller than the distance between the first bracket 13 and the second bracket 14 in the second posture.

[0120] In this way, the first bracket 13 and the second bracket 14 can have multiple postures when relative to each other to adapt to objects of different sizes being transported. Different postures can be used for adaptive changes in different application scenarios.

[0121] Below, taking the solution in which the connecting frame 1 includes a first bracket 13 and a second bracket 14 that can be movably connected as an example, some embodiments in which the first bracket 13 and the second bracket 14 can be movably connected are specifically introduced, wherein the movably connected first bracket 13 and the second bracket 14 can be an opening and closing structure similar to a scissors, a translational sliding method, a folding method, etc.

[0122] Example 1 in which the first bracket 13 and the second bracket 14 are movably connected:

[0123] Reference Figure 1 and Figure 9 In some embodiments, the middle portion of the first bracket 13 and the middle portion of the second bracket 14 are rotatably connected.

[0124] Furthermore, the first bracket 13 and the second bracket 14 may form an openable and closable structure, and when the first bracket 13 and the second bracket 14 rotate relative to each other, they may switch between the first posture and the second posture.

[0125] By directly connecting the middle of the first bracket 13 and the second bracket 14, the first bracket 13 and the second bracket 14 can rotate relative to each other, thereby realizing the switching between the first posture and the second posture. The structure is simple, easy to implement, and the strength of the entire structure is high.

[0126] The middle portion of the first bracket 13 and the middle portion of the second bracket 14 are rotatably connected to form an openable and closable structure, similar to a pair of scissors. The first bracket 13 and the second bracket 14 themselves constitute the two arms of the scissors. This structure is easy to implement, has few parts, and is stable. Moreover, the opening and closing structure can be opened and closed very conveniently, and the space occupied by opening and closing is within the plane formed by the second direction b and the third direction c, without affecting the lifting space in the first direction a.

[0127] Of course, in some embodiments of the present application, the transport device further includes a transmission pipeline 4, which is used to transmit the medium to the pressure chamber 211 through the connecting port 212, and at least a portion of the transmission pipeline 4 is located below the first bracket 13 and the second bracket 14.

[0128] The medium is input through the transmission pipeline 4, which facilitates lifting. Moreover, at least a part of the transmission pipeline 4 is located below the first bracket 13 and the second bracket 14, avoiding interference with the bearing space and facilitating storage and switching of postures.

[0129] Since the connecting frame 1 may include a first bracket 13 and a second bracket 14 that can be movably connected, when the first bracket 13 and the second bracket 14 move relative to each other, the transmission pipeline 4 may be pulled or entangled. Therefore, the transmission pipeline 4 can be fixedly arranged below the connecting frame 1.

[0130] In order to solve the problem of the layout of the transmission pipeline 4 at the position where the first bracket 13 and the second bracket 14 are movably connected, refer to Figure 2 In some embodiments, the transmission pipeline 4 includes an adapter 41, there are at least two lifting mechanisms 2, and the adapter 41 is arranged at the movable connection between the first bracket 13 and the second bracket 14. The adapter 41 is used to distribute the medium of the transmission pipeline 4 to the pressure chambers 211 of different lifting mechanisms 2. The transmission pipeline 4 is arranged along the extension direction of the first bracket 13 and the second bracket 14.

[0131] The adapter 41 is arranged at the movable connection between the first bracket 13 and the second bracket 14, and can be fixed on the rotating shaft. In this way, when the first bracket 13 and the second bracket 14 rotate, the adapter 41 will not have a large displacement, thereby preventing the transmission pipeline 4 from being pulled or entangled. At the same time, the adapter 41 can realize the conversion of more than two paths. When there are at least two lifting mechanisms 2, the medium can be distributed to the pressure chambers 211 of different lifting mechanisms 2 through the adapter 41. The adapter 41 is arranged at the movable connection between the first bracket 13 and the second bracket 14, which can facilitate the layout of the transmission pipeline 4 along the extension direction of the first bracket 13 and the second bracket 14, and the transmission pipelines 4 of different branches are connected through the adapter 41 arranged at their movable connection. In this way, the transmission pipeline 4 can be completely located below the connecting frame 1 and will not be pulled, bent or entangled due to the movement of the first bracket 13 and the second bracket 14, thereby improving the convenience of the handling device.

[0132] Reference Figure 9 and Figure 10 In some embodiments of the handling device of the present application, the connecting frame 1 also includes a blocking member 18, which is arranged on the first bracket 13 and / or the second bracket 14. In the second position, the blocking member 18 can limit the surrounding side of the target object.

[0133] The blocking member 18 can provide a certain degree of blocking and limiting of the side of the target object when the connecting frame 1 carries the target object, thereby preventing the target object from tipping over or other safety accidents during transportation.

[0134] Specifically, in this embodiment, the middle portion of the first bracket 13 and the middle portion of the second bracket 14 are rotatably connected to form an openable and closable structure, referring to Figure 9 Four lifting mechanisms 2 can be set, respectively located at the two ends of the first bracket 13 and the second bracket 14. In this way, the entire handling device is evenly stressed when lifting the target object, and the load is stable.

[0135] The barrier 18 can be installed at both ends of the first bracket 13 and the second bracket 14, or only on one side of the first bracket 13 and the second bracket 14 that is convenient for operation. In this way, during transportation, the side without the barrier 18 can be easily extended under the target object, while the side with the barrier 18 can facilitate observation and operation.

[0136] The shape of the enclosure 18 can be set according to actual needs. For example, the enclosure 18 is L-shaped in the plane formed by the second direction b and the third direction c. In the third direction c, the upper edge is higher than the upper edge of the jacking mechanism 2. In this way, when the first bracket 13 and the second bracket 14 are in the second position, the L-shaped enclosure 18 can just be engaged and enclosed in the two corners of the square target object, thereby well limiting the surrounding side of the target object.

[0137] When the first bracket 13 and the second bracket 14 are in the first position, the first bracket 13 and the second bracket 14 can be placed side by side and fit together, taking up very little space. At this time, the two enclosures 18 are at a certain angle and are also arranged side by side with the first bracket 13 and the second bracket 14. The length of the two enclosures 18 can be set within a certain range. For example, when the first bracket 13 and the second bracket 14 are in the first position, the length of the two enclosures 18 along the third direction is equal to or less than the maximum distance between the first bracket 13 and the second bracket 14 along the third direction c. In this way, in the first position, the two enclosures 18 will not exceed the maximum length of the transport device in the third direction c, will not affect the overall storage size in the third direction c, and are convenient for storage and carrying.

[0138] Moreover, refer to Figure 9 and Figure 10 In an embodiment of the present application, the transport device may further include a handle 181, which may be provided on the side of the first bracket 13 and the second bracket 14 where the enclosure 18 is provided, to facilitate manual operation by staff. The handle 181 may be in the form of a rod-shaped structure extending along the second direction b, and a handle 181 may be provided on each of the first bracket 13 and the second bracket 14, to facilitate two-handed operation. The handle 181 may be rotatably connected to the corresponding connection position (the first bracket 13 or the second bracket 14), so that during the relative movement of the first bracket 13 and the second bracket 14, the handle 181 may be able to change the rotation angle at any time as needed, making the operation more convenient.

[0139] In order to facilitate transportation, a traction part can be provided. The traction part can be a pull ring, a pull rope, a hook for tying the traction rope, etc. provided on the transportation device. The traction part can be provided on the connecting frame 1 or on the handle 181. For example, a traction hole is formed on the handle 181 to facilitate traction.

[0140] Embodiment 2 in which the first bracket 13 and the second bracket 14 are movably connected:

[0141] Reference Figure 11 、 Figure 12 、 Figure 13 In other embodiments, the connecting frame 1 further includes a connecting rod mechanism 15 , and the first bracket 13 and the second bracket 14 are rotatably connected to the two ends of the connecting rod mechanism 15 .

[0142] In this way, when the first bracket 13 and the second bracket 14 rotate relative to the link mechanism 15, the first posture and the second posture can be switched.

[0143] Here, the first bracket 13 and the second bracket 14 are connected by a connecting rod mechanism 15. Rotation of the first bracket 13 and the second bracket 14 relative to the connecting rod mechanism 15 enables switching between the first and second postures. The connecting rod mechanism 15 is simple and easy to configure, allowing for adaptability to multiple sizes and specifications, providing flexibility and versatility. Furthermore, the configuration and connection of the connecting rod mechanism 15 has minimal impact on the structure of the first bracket 13 and the second bracket 14, facilitating production. Furthermore, sufficient connection strength can be easily ensured by selecting the appropriate size or material.

[0144] The connecting rod mechanism 15 may include a connecting rod, and the first bracket 13 and the second bracket 14 are hingedly connected to the connecting rod, so that the first bracket 13 and the second bracket 14 can switch between the first posture and the second posture. The length of the connecting rod can be flexibly set according to actual needs.

[0145] In some embodiments, the first end of the connecting rod mechanism 15 is rotatably connected to the first bracket 13, and the second end of the connecting rod mechanism 15 is rotatably connected to the second bracket 14 and slidably connected along the extension direction of the second bracket 14;

[0146] Alternatively, the first end of the link mechanism 15 is rotatably connected to the first bracket 13 and slides along the extension direction of the first bracket 13 , and the second end of the link mechanism 15 is rotatably connected to the second bracket 14 and slides along the extension direction of the second bracket 14 .

[0147] The connecting rod mechanism 15 may also include more than two connecting rods, and the two or more connecting rods may be connected in sequence, arranged side by side, or connected to each other.

[0148] In some embodiments, the linkage mechanism 15 includes at least a first link 1511 and a second link 1512, one end of the first link 1511 is rotatably connected to one end of the second link 1512, the first bracket 13 is rotatably connected to the other end of the first link 1511, and the second bracket 14 is rotatably connected to the other end of the second link 1512.

[0149] Here, the connecting rod mechanism 15 includes at least two connecting rods, so that the length setting of the connecting rod mechanism 15 is more flexible, and more than three rotation points are added between the first connecting rod 1511 and the second connecting rod 1512, so that the relative movement of the first connecting rod 1511 and the second connecting rod 1512 is more flexible, and a variety of different postures can be switched as needed during switching, further increasing the scope of application.

[0150] Of course, in some embodiments, there may be two or more connecting rod mechanisms 15 , so that the connection between the first bracket 13 and the second bracket 14 is more stable.

[0151] For example, refer to Figure 12 There are at least two groups of connecting rod mechanisms 15, and the arrangement direction of the at least two groups of connecting rod mechanisms 15 includes the extension direction of the first bracket.

[0152] In this way, at least two groups of link mechanisms 15 can be connected at two positions of the first bracket 13 and the second bracket 14 respectively, thereby improving the strength of the connection between the first bracket 13 and the second bracket 14 and enhancing the stability during switching.

[0153] When the connecting rod mechanism 15 includes at least two groups, in order to improve the coordination between the connecting rod mechanisms 15, some structures can be added between the connecting rod mechanisms 15 to facilitate mutual coordination, so that the position change of the first bracket 13 and the second bracket 14 is smoother.

[0154] For example, refer to Figure 12 In some embodiments, the connecting rod mechanism 15 further includes a connecting rod 152 , and both ends of the connecting rod 152 are rotatably connected to the first connecting rod 1511 and the second connecting rod 1512 in two adjacent connecting rod mechanisms 15 .

[0155] In this way, the linkage mechanisms 15 are rotatably connected by the linkage rod 152, making the linkage between the linkage mechanisms 15 smoother, and different linkage mechanisms 15 can restrain and follow each other. In addition, the linkage rod 152 can further improve the strength and stability when the first bracket 13 and the second bracket 14 are switched.

[0156] Of course, in some embodiments, the connecting rod 152 can also connect any two sets of connecting rod mechanisms 15, and is not limited to connecting only two adjacent sets of connecting rod mechanisms 15. Furthermore, the connecting rod 152 can also connect three or more connecting rod mechanisms 15, and the relative positions of the connected connecting rod mechanisms 15 do not necessarily have to be adjacent.

[0157] The connecting rods in the connecting rod mechanism 15 are connected end to end. When the number of connecting rods in the connecting rod mechanism 15 is an odd number, the transformation of the first bracket 13 and the second bracket 14 to the first position may result in an imbalance in the number of connecting rods on both sides after folding, and the first bracket 13 and the second bracket 14 may be misaligned in the third direction c. When the number of connecting rods in the connecting rod assembly 151 is an even number, the transformation of the first bracket 13 and the second bracket 14 to the first position can ensure that the number of connecting rods on both sides is equal after folding. This facilitates the alignment of the first bracket 13 and the second bracket 14 in the third direction c, eliminating misalignment and thus saving space occupied by the connecting frame 1 along the second direction b in the first position. On this basis, the lengths of the connecting rods in the connecting rod mechanism 15 can be set to be consistent, thereby ensuring that the first bracket 13 and the second bracket 14 are aligned in the third direction c after the connecting rods are folded. Thirdly, the lengths of the fixed rod and the connecting rods in the connecting rod group 151 can also be set to be consistent. Then, the connecting rod 152 and the interconnected connecting rods can form a parallelogram connecting rod mechanism 15, which is more conducive to switching of postures.

[0158] Reference Figure 12 Taking the solution in which the connecting rod mechanism 15 is composed of a first connecting rod 1511 and a second connecting rod 1512 as an example, the lengths of the first connecting rod 1511, the second connecting rod 1512 and the connecting rod 152 are the same.

[0159] That is, the lengths of the links (including the first link 1511, the second link 1512, and the connecting rod 152) in the link mechanism 15 are substantially the same. Thus, the link mechanism 15 is equivalent to forming a parallelogram. In the two states of the first bracket 13 and the second bracket 14 being open and closed, i.e., in the first and second positions, the first bracket 13 and the second bracket 14 are equivalent to being translated along the third direction c. Thus, the length position occupied along the second direction b remains unchanged. This facilitates accurate positioning of the lower portion of the object to be transported, and is also convenient for storage and carrying.

[0160] It should be noted that the lengths of the connecting rods in the connecting rod mechanism 15 are substantially uniform, referring to the hinge points where the connecting rods are articulated with each other, rather than the entire outer contour of the connecting rod. This is because the length that remains constant during rotation is determined by the distance between the two hinge points in each connecting rod, rather than the outer contour length of the connecting rod itself.

[0161] In this embodiment, the transmission pipeline 4 is also located below the first bracket 13 and the second bracket 14 and can be provided at a location where the first bracket 13 and the second bracket 14 can be movably connected. Furthermore, there are at least two lifting mechanisms 2, and in an exemplary embodiment, there are four lifting mechanisms 2, which are respectively provided near the ends of the first bracket 13 and the second bracket 14.

[0162] Specifically, the transmission pipeline 4 includes an adapter 41 , which is provided at a movable connection between the first bracket 13 and the second bracket 14 . The adapter 41 is used to distribute the medium of the transmission pipeline 4 to the pressure chambers 211 of different lifting mechanisms 2 .

[0163] The adapter 41 can be installed below the fixed rod to connect the medium pipelines of the four lifting mechanisms 2. The four medium pipelines are respectively installed below the connecting rods in the two connecting rod groups 151. With the parallelogram connecting rod mechanism 15, each connecting rod is a side of the parallelogram. The rod length of each side remains unchanged during the folding process, so that the transmission pipeline 4 will not have redundant outer frames during the folding process, and will not be pulled or entangled.

[0164] Similarly, in these embodiments, the connecting frame 1 may further include a blocking member 18, a handle member 181, a traction portion and other related structures, which will not be described in detail here.

[0165] Embodiment 3 in which the first bracket 13 and the second bracket 14 are movably connected:

[0166] Reference Figure 14 Figure 15 In this embodiment, the connecting frame 1 further includes a hinge mechanism 16, which includes a first hinge member 161 and a second hinge member 162. The middle portion of the first hinge member 161 and the middle portion of the second hinge member 162 are rotatably connected, wherein the first end of the first hinge member 161 is hinged to the first bracket 13, and the second end of the first hinge member 161 is rotatably connected to the second bracket 14 along the extension direction of the second bracket 14. The first end of the second hinge member 162 is hinged to the second bracket 14, and the second end is rotatably connected to the first bracket 13 along the extension direction of the first bracket 13.

[0167] Alternatively, the first end of the first hinge 161 is rotatably connected to the first bracket 13 and slidingly connected along the extension direction of the first bracket 13, the second end of the first hinge 161 is rotatably connected to the second bracket 14 and slidingly connected along the extension direction of the second bracket 14, the first end of the second hinge 162 is rotatably connected to the second bracket 14 and slidingly connected along the extension direction of the second bracket 14, and the second end is rotatably connected to the first bracket 13 and slidingly connected along the extension direction of the first bracket 13.

[0168] In this way, the hinge mechanism 16 itself forms an openable and closable structure, and then through the connection with the first bracket 13 and the second bracket 14, the first bracket 13 and the second bracket 14 are movably connected, and the first posture and the second posture can be switched.

[0169] Specifically, refer to Figure 14 and Figure 15The first bracket 13 and the second bracket 14 are both provided with a sliding groove 17 along the second direction b, the first end of the first hinge 161 is hinged to the first bracket 13, and the second end is rotatably slidably connected to the sliding groove 17 of the second bracket 14, and the first end of the second hinge 162 is hinged to the second bracket 14, and the second end is rotatably slidably connected to the sliding groove 17 of the first bracket 13.

[0170] The first hinge 161 and the second hinge 162 of the hinge mechanism 16 form an openable and closable structure, similar to the shape of scissors. On this basis, the first bracket 13 and the second bracket 14 are connected to the two sides of the hinge mechanism 16 to realize the switching of the first bracket 13 and the second bracket 14 between the first posture and the second posture. During the switching process, since the first hinge 161 and the second hinge 162 both rotate around their centers, the distance between the two ends of the first hinge 161 and the second hinge 162 along the second direction b is continuously changing. Therefore, in order to adapt to this motion trajectory, when the first end of the first hinge 161 is hinged to the first bracket 13 and the first end of the second hinge 162 is hinged to the second bracket 14, a slide groove 17 along the second direction b is provided on both the first bracket 13 and the second bracket 14. Then, the second end of the first hinge 161 can slide rotatably with the slide groove 17 of the second bracket 14, and the second end of the second hinge 162 can slide rotatably with the slide groove 17 of the first bracket 13.

[0171] The first bracket 13 and the second bracket 14 are connected by an openable and closable hinge mechanism 16, wherein the hinge mechanism 16 can be manufactured in a standardized manner in batches and then assembled with the first bracket 13 and the second bracket 14. The first bracket 13 and the second bracket 14 themselves require fewer structures for hinge connection, which is convenient for design and does not affect the strength of the first bracket 13 and the second bracket 14.

[0172] In order to prevent jamming and improve the smoothness during switching, in some embodiments, the first hinge 161 and the second hinge 162 have the same length and are rotatably connected through the center position of the first hinge 161 and the second hinge 162.

[0173] On this basis, the lengths of the sliding grooves 17 on the first bracket 13 and the second bracket 14 are consistent, and their positions along the third direction c correspond.

[0174] The first hinge 161 and the second hinge 162 are of the same length and are rotatably connected at the center, so that the first bracket 13 and the second bracket 14 will not be misaligned before and after opening and closing. This allows for accurate alignment under the object to be transported and is convenient for storage and carrying.

[0175] In this embodiment, the transmission pipeline 4 can also be located below the first bracket 13 and the second bracket 14, but since the second end of the first hinge 161 and the second end of the second hinge 162 must slide in the slide groove 17, the transmission pipeline 4 can avoid the first hinge 161 and the second hinge 162 to prevent the transmission pipeline 4 from being pulled or entangled.

[0176] For example, in some solutions of this embodiment, the transmission pipeline 4 is arranged to avoid the position of the structure where the first bracket 13 and the second bracket 14 are movably connected.

[0177] Here, in order to prevent the transmission pipeline 4 from being entangled due to the relative movement of the first bracket 13 and the second bracket 14, the transmission pipeline 4 can be completely arranged below the first bracket 13 and the second bracket 14, so that the transmission pipeline 4 will move with the movement of the first bracket 13 and the second bracket 14, and will not interfere with the movable connection between the first bracket 13 and the second bracket 14, thereby avoiding pulling, bending or entanglement, and is easy to implement.

[0178] Similarly, in these embodiments, the connecting frame 1 may further include a blocking member 18, a handle member 181, a traction portion and other related structures, which will not be described in detail here.

[0179] The first bracket 13 and the second bracket 14 of the connecting frame 1 can have multiple postures during the switching process, such as the first posture, the second posture, the third posture, etc. In each posture, it can adapt to application requirements of different sizes or different scenarios. In the corresponding posture, the relative position relationship between the first bracket 13 and the second bracket 14 can be locked to improve the stability of the transport device. For example, in the first posture, it is often suitable for storage and carrying. The locking of the relative position of the first bracket 13 and the second bracket 14 in this state makes storage and carrying more convenient and will not open accidentally. In the second and third postures, the transport device carries a target object. At this time, if the relative position between the first bracket 13 and the second bracket 14 changes, it may cause an unbalanced force problem under the target object. Therefore, the relative position of the first bracket 13 and the second bracket 14 can also be locked at this time.

[0180] In some embodiments, the connecting frame 1 may further include a locking structure, which is arranged on the first bracket 13 and the second bracket 14, or on a transmission path where the first bracket 13 and the second bracket 14 can be movably connected; in the second position, the locking structure can lock the relative position relationship between the first bracket 13 and the second bracket 14.

[0181] It should be noted that the locking structure herein can lock the relative positions of the first bracket 13 and the second bracket 14 when the connecting frame 1 is in the desired position, thereby improving stability and safety during transportation. In some embodiments, only the second position needs to be locked. Of course, in other embodiments, the desired position of the connecting frame 1 includes all or any of the positions that the connecting frame 1 can be in, including but not limited to the first position, the second position, the third position, etc.

[0182] There are many ways to implement the locking structure, such as a snap-on structure, a fastener locking structure, an axle pin locking structure, etc.

[0183] For example, in some embodiments, the locking structure includes a first clamping portion provided on the first bracket 13 and a second clamping portion provided on the second bracket 14. In the second position, the first clamping portion and the second clamping portion are engaged with each other to lock the relative position relationship between the first bracket 13 and the second bracket 14.

[0184] In this way, the relative positions of the first bracket 13 and the second bracket 14 can be locked by the first clamping portion and the second clamping portion respectively provided on the first bracket 13 and the second bracket 14. When the connecting frame 1 is in the required position, the clamping cooperation of the first clamping portion and the second clamping portion can achieve the locking of the relative position relationship between the first bracket 13 and the second bracket 14.

[0185] For example, in some embodiments, the locking structure also includes a limiting shaft, the limiting shaft is provided with a limiting rib or the limiting shaft is a damping shaft, the first bracket 13 and the second bracket 14 are movably connected through the limiting shaft, and in the first posture and / or the second posture, the relative position relationship between the first bracket 13 and the second bracket 14 can be locked by the limiting shaft.

[0186] In this way, the angle and position of rotation are controlled by the limiting ribs or the damping shaft provided at the rotation connection position, thereby achieving locking of the relative positional relationship between the first bracket 13 and the second bracket 14 .

[0187] In the handling device of the present application, a power source needs to be input to the lifting mechanism 2 to achieve lifting. The power source can be provided by an external device or by providing a power input structure within the handling device itself. The power source can be provided by a medium, which can be either gas or liquid.

[0188] Therefore, in some embodiments, reference Figure 16 The handling device of the present application also includes a power source 5, which is connected to the piston lifting components 21 of the multiple lifting mechanisms 2 and is used to drive the piston lifting components 21 to move up and down.

[0189] The handling device is equipped with a power source 5 that can input medium into the pressure chamber 211 of the piston lifting assembly 21. During operation, the handling device does not need to be connected to external equipment, and the medium is supplied by the medium input provided by the device itself. This facilitates operation and facilitates pressure maintenance during handling.

[0190] There are many ways to implement power source 5. The most basic structure consists of a chamber that can hold a medium and a component that can act on the chamber to transfer the medium. The power source for the chamber containing the medium can be manual or electrical. Two different embodiments are described below.

[0191] Power source 5 embodiment 1:

[0192] Reference Figure 16 、 Figure 17 、 Figure 18 In this embodiment, the power source 5 includes a medium base 51 having a medium cavity 511 and a force-applying component 52. The medium cavity 511 is connected to the piston lifting component 21. A portion of the force-applying component 52 is arranged in the medium cavity 511 and is sealed and movably connected to the medium base 51. The other portion of the force-applying component 52 is arranged outside the medium cavity 511. The force-applying component 52 divides the medium cavity 511 into two sub-medium cavities, one of which is used to store the medium. The power source 5 also includes a self-locking structure 53. The self-locking structure 53 is arranged on the medium base 51 and the other portion of the force-applying component 52. When the piston lifting component 21 is raised, the self-locking structure 53 is used to lock the relative position between the force-applying component 52 and the medium base 51.

[0193] Specifically, a flow port 512 for connecting the medium cavity 511 and the pressure cavity 211 is provided on the medium base 51. When the force-applying component 52 is subjected to external force, it squeezes the medium cavity 511 to input the medium in the medium cavity 511 into the pressure cavity 211 through the flow port 512.

[0194] In the power source 5 of this embodiment, when the force-applying component 52 is subjected to external force, it can squeeze the medium cavity 511, and the medium in the medium cavity 511 will increase in pressure due to the squeezing, and then be input into the pressure cavity 211 through the flow port 512, so that the lifting mechanism 2 can achieve the lifting action.

[0195] Among them, external force can use artificial external force to achieve the input of medium. The overall structure is simple and easy to implement, and the failure rate and cost are relatively low.

[0196] After the medium is input into the pressure chamber 211 of the lifting mechanism 2 and the target object is lifted, it is now necessary to carry it. During the transportation process, the lifting state may need to be maintained. In other words, the medium needs to be pressurized. Therefore, it is necessary to prevent the medium from flowing back into the medium input structure. Because the power source 5 also includes a self-locking structure 53, the self-locking structure 53 locks the relative position between the force-applying component 52 and the medium base 51, thereby automatically preventing the medium from flowing back. At this time, the operator can release the force-applying component without affecting the lifting effect, and the operator can continue the transportation operation.

[0197] It should be noted that the volume of the medium chamber 511 of the power source 5 of this embodiment can be equal to the volume of the medium required for lifting. In this way, the lifting can be achieved by discharging the medium in the medium chamber 511 in a single action, making the operation more convenient and quick. Based on this solution, the design of the self-locking structure 53 is more suitable. For example, by stepping on the force member once, the medium in the medium chamber 511 is input into the pressure chamber 211, and the lifting mechanism 3 is lifted to the desired height. At this time, the self-locking structure 53 locks the relative position of the force member and the medium base 51, maintaining the pressure in the medium chamber 511 and the lifting state.

[0198] In order to facilitate the application of external force and work smoothly, refer to Figure 17 and Figure 18 In some embodiments, the force-applying assembly 52 includes an extrusion member 521 and a force-applying rod 522. A portion of the extrusion member 521 is located in the medium cavity 511 and can slide sealably with the medium base 51. Another portion of the extrusion member 521 is located outside the medium cavity 511 and is slidingly connected to the force-applying rod 522. The force-applying rod 522 is hingedly connected to the medium base 51. When the force-applying rod 522 moves, it drives the extrusion member 521 to slide sealably in the medium cavity 511. The self-locking structure 53 is located on the force-applying rod 522 and the medium base 51.

[0199] In this embodiment, by applying external force to the force-applying rod 522, the extrusion member 521 can be driven to slide in a sealed manner within the medium cavity 511, thereby inputting the medium into the pressure cavity 211. During operation, the force-applying member can be conveniently stepped on manually, further facilitating the handling operation.

[0200] Among them, the hinged connection between the medium base 51 and the force rod 522 allows the force rod 522 to be rotatably fixed on the medium base 51. When the force rod 522 is subjected to force, it can rotate relative to the medium base 51 to produce a certain displacement; the extrusion piece 521 and the force rod 522 are slidably connected, so that when the force rod 522 is displaced by force, it can drive the extrusion piece 521 to move. At the same time, since the movement trajectory of the connection between the force rod 522 and the extrusion piece 521 is arc-shaped, and the movement trajectory of the extrusion piece 521 in the medium cavity 511 is a straight line, in order to adapt to the conversion between the two movements, the extrusion piece 521 and the force rod 522 are slidably connected to adapt to the conversion of the above movements.

[0201] In order to make the operation of the force rod 522 more labor-saving, refer to Figure 17 and Figure 18 In some embodiments, the first end of the force rod 522 is hinged to the medium base 51, the second end is the force-bearing side, and the extrusion member 521 is slidably connected to the position between the first end and the second end of the force rod 522.

[0202] In this way, the hinged position of the first end of the force rod 522 and the medium base 51 is equivalent to the rotation fulcrum, the second end of the force rod 522 is the input part, and the sliding connection between the force member and the extrusion member 521 is the output part. The entire structure utilizes the lever principle. The torque of the second end of the force rod 522 is greater than the torque of the extrusion member 521, which can make it easier to save effort when applying external force to the force rod 522, thereby improving the operating experience.

[0203] It should be noted that the shape of the force applying member, the shape of the dielectric base 51, and the size of the dielectric cavity 511 formed in the dielectric base 51 can be set according to actual needs. Figure 16 、 Figure 17 、 Figure 18 The force-applying member is in the shape of a plate, and the upper surface also has a non-slip structure, which is convenient for staff to step on; the medium base 51 has a medium cavity 511 with a cylindrical structure; the extrusion member 521 can be a conical piston adapted to the cylindrical medium cavity 511.

[0204] In this embodiment, there are many ways to implement the self-locking structure 53, such as a snap-fit ​​method, a pin method, a solenoid valve control method, etc.

[0205] For example, in some embodiments of the self-locking structure 53, refer to Figure 17The self-locking structure 53 includes a hook 531 and a slot 532. The hook 531 is set on one of the medium base 51 and the force-applying component 52, and the slot 532 is set on the other. When in the engaged position, the hook 531 is engaged in the slot 532, and the relative position between the force-applying component 52 and the medium base 51 is locked; when in the disengaged position, the hook 531 is disengaged from the slot 532, and the relative position between the force-applying component 52 and the medium base 51 is unlocked.

[0206] In this embodiment, the self-locking structure 53 may include a hook 531 and a slot 532 disposed between the medium and the force-applying assembly 52. ​​The hook 531 and slot 532 engage to lock the relative position between the force-applying assembly 52 and the medium base 51, preventing backflow of the medium. The engagement between the hook 531 and slot 532 is simple and easy to implement, and automatically locks without requiring additional action, making operation very convenient.

[0207] During the engagement process between the hook 531 and the slot 532, the hook 531 may deform or displace to facilitate its engagement with the slot 532. The solution in which the hook 531 deforms provides a simple structure, while the solution in which the hook 531 displaces requires additional deformation structures. The hook 531 itself does not deform, thereby increasing the strength and service life of the component.

[0208] For example, in order to improve the service life and clamping strength of the components, refer to Figure 17 In some embodiments, the hook 531 is rotatably disposed on one of the medium base 51 and the force-applying assembly 52 , and the self-locking structure 53 further includes a hook recovery member 533 , which is used to apply force to the hook 531 toward the locking position.

[0209] The hook recovery member 533 gives the hook 531 a certain rebound ability, which can facilitate the automatic connection between the hook 531 and the slot 532. In the absence of other obstacles, the force applied to the hook 531 by the hook recovery member 533 can keep the hook 531 in the slot 532, making it difficult to fall out, thereby maintaining the stability of the medium pressure.

[0210] After the transport is completed, the medium in the lifting mechanism 2 may need to be released to remove the transport device from under the target object. On this basis, the medium can be returned to the medium chamber 511 by unlocking the self-locking structure 53.

[0211] The hook recovery member 533 can be a component with elasticity such as a spring or a torsion spring. Figure 17In some embodiments, the self-locking structure 53 further includes a hook unlocking member 534. One end of the hook 531 is a hook portion 5311. The hook unlocking member 534 is connected to the other end of the hook 531. When the hook unlocking member 534 is subjected to external force, the hook 531 rotates to drive the hook portion 5311 to move to the disengaged position.

[0212] In this way, when the self-locking structure 53 needs to be unlocked, the hook 531 can be rotated by applying force to the hook unlocking member 534, driving the hook portion 5311 to disengage from the slot 532, thereby conveniently unlocking.

[0213] For ease of operation, the hook unlocking member 534 is a rod-shaped structure that can be extended to a long length to facilitate access by staff. For ease of implementation, the hook 531 is provided on the media base 51, and the slot 532 is provided on the force-applying member. When the force-applying member is stepped on, it moves toward the media base 51. When the outer edge of the slot 532 contacts the hook 531, the hook 531 is squeezed, and the hook 531 rotates around its hinge point with the media base 51, allowing the hook 531 to smoothly engage with the slot 532.

[0214] In other embodiments of the self-locking structure 53, refer to Figure 18 The self-locking structure 53 includes a positioning pin 535 and a positioning hole 536. The positioning pin 535 is slidably set on one of the medium base 51 and the force-applying component 52, and the positioning hole 536 is set on the other of the medium base 51 and the force-applying component 52. When the positioning pin 535 slides to the positioning position, the positioning pin 535 is inserted into the positioning hole 536, and the relative position between the force-applying component 52 and the medium base 51 is locked. When the positioning pin 535 slides to the unlocking position, the positioning pin 535 is disengaged from the positioning hole 536, and the relative position between the force-applying component 52 and the medium base 51 is unlocked.

[0215] The self-locking structure 53 can also be realized by the cooperation of the positioning pin 535 and the positioning hole 536 to achieve the locking of the relative positions of the medium base 51 and the force applying component 52. The structure is simple and the positioning is stable.

[0216] In the scheme where the positioning hole 536 and the positioning pin 535 cooperate, the positioning hole 536 can be provided on the dielectric base 51 and the positioning pin 535 can be provided on the force-applying member, or the positioning hole 536 can be provided on the force-applying member and the positioning pin 535 can be provided on the dielectric base 51. The cooperation between the positioning hole 536 and the positioning pin 535 can be manually inserted or automatically locked.

[0217] For example, in this embodiment, the self-locking structure 53 may include a positioning pin recovery member 538, and the components in the medium base 51 and the force-applying assembly 52 where the positioning pin 535 is set have a self-locking hole 537, the positioning pin 535 is set in the self-locking hole 537, and the positioning pin recovery member 538 is located in the self-locking hole 537 and presses against the positioning pin 535. The positioning pin recovery member 538 is used to apply force to the positioning pin 535 to move toward the positioning position.

[0218] The positioning pin 535 can move within the self-locking hole 537. When subjected to an external force, the positioning pin 535 can move toward the self-locking hole 537, making it easier to plug into the positioning hole 536. The positioning recovery member applies a force toward the positioning hole 536 to the positioning pin 535, causing at least a portion of the positioning pin 535 to extend into and remain within the positioning hole 536, preventing it from falling out. The force applied by the positioning pin recovery member 538 enables the automatic locking function.

[0219] Similarly, in order to facilitate unlocking, this embodiment also provides a structure that facilitates unlocking. Specifically, refer to Figure 18 The self-locking structure 53 may include a positioning pin unlocking member 539 , which is disposed in the positioning hole 536 and can move along the positioning hole 536 toward the positioning pin 535 to push the positioning pin 535 out of the positioning hole 536 .

[0220] The positioning pin unlocking member 539 that can move along the positioning hole 536 toward the positioning pin 535 can push the positioning pin 535 away from the positioning hole 536 and move toward the self-locking hole 537 until it is disengaged from the positioning hole 536 to achieve unlocking.

[0221] The shape and structure of the positioning pin unlocking member 539 can be customized based on actual needs. For example, the first end of the positioning pin unlocking member 539 can be inserted into the positioning hole 536, while the second end is located outside the positioning hole 536 and has a large flange, forming a disc-shaped handle that facilitates manual or foot-operated operation. A limiting step can also be provided within the positioning hole 536, and the positioning pin unlocking member 539 is provided with a corresponding limiting protrusion. When the positioning pin unlocking member 539 moves toward the positioning pin 535 to the preset unlocking position, the limiting protrusion abuts the limiting step, preventing the positioning pin unlocking member 539 from further movement.

[0222] In the first embodiment of the power source 5, after the force-applying member of the power source 5 is stepped on, the medium in the medium chamber 511 can be input into the pressure chamber 211 of the lifting mechanism 2. A check valve can be provided in the medium input passage or the output end of the power source 5 to enable multiple stepping-in inputs. Of course, the power source 5 can also achieve the lifting action with a single stepping action. For example, the medium volume of the medium chamber 511 is greater than or equal to the required volume of the medium. In this way, only a single stepping action is required to provide sufficient medium. Generally, the medium volume of the medium chamber 511 can be set to be equal to the required volume of the medium.

[0223] The medium can be gas or liquid, and the medium cavity 511 can be pre-contained in the medium and sealed from the outside. In this way, the medium in the medium cavity 511 is preset and will not be disturbed by the outside world. Figure 16 The medium base 51 is provided with a medium injection port 513, and the power source 5 also includes a sealing plug 514 adapted to fit within the medium injection port 513. The medium injection port 513 communicates with the medium cavity 511, and the sealing plug 514 is used to seal the medium injection port 513. When the volume of the medium cavity 511 reaches a predetermined size and is filled with the predetermined medium, the sealing plug 514 can be used to seal the medium injection port 513. Thereafter, during transportation and portability, the sealing plug 514 does not need to be removed, and the medium within the medium cavity 511 is protected from external influences.

[0224] Power source 5 embodiment 2:

[0225] In some embodiments of the present application, reference is made to Figure 19 、 Figure 20 、 Figure 21 The power source 5 includes a pump 54 and a reversing valve 55. The pump 54 is connected to the piston lifting assembly 21 through the reversing valve 55. When the reversing valve 22 is in the first state, the outlet of the pump 54 is connected to the piston lifting assembly 21. When the reversing valve 55 is in the second state, the outlet of the pump 54 is disconnected from the piston lifting assembly 21.

[0226] In this embodiment, the power source 5 can be provided by a pump 54. Furthermore, a reversing valve 55 is included to facilitate pressure maintenance and pressure relief. The reversing valve 55 can switch the communication state between the pump 54 and the piston lifting assembly 21. The communication states can include opening, closing, switching the medium flow direction, switching branches, etc. This can reduce the number of mechanisms in the transport device and enable more intelligent control operations.

[0227] Specifically, refer to Figure 20 and Figure 21To achieve reversing, the reversing valve 55 includes a valve body 551, a reversing plunger 552, and a reversing power member 553. The valve body 551 has a reversing chamber 5511. The valve body 551 is also provided with a pump input port 5512, a pump output port 5513, a medium input port 5514, and a medium output port 5515 that are connected to the reversing chamber 5511. The pump input port 5512 and the pump output port 5513 are respectively connected to the input and output of the pump 54, the medium input port 5514 is connected to the medium, and the medium output port 5515 is connected to the pressure chamber 211. The reversing plunger 552 can slide in a sealed manner in the reversing chamber 5511, and the reversing power member 553 can drive the reversing plunger 552 to move between a first position and a second position in the reversing chamber 5511.

[0228] In the first position, the reversing plunger 552 connects the pump input port 5512 with the medium input port 5514 , and connects the pump output port 5513 with the medium output port 5515 ;

[0229] In the second position, the reversing plunger 552 connects the pump input port 5512 with the medium output port 5515 , and connects the pump output port 5513 with the medium input port 5514 .

[0230] In this way, by providing power through the reversing power member 553, the reversing plunger 552 inside the valve body 551 can be driven to move in the reversing chamber 5511. When the reversing plunger 552 is in different positions, the connection combination among the four openings of the pump inlet 5512, the pump outlet 5513, the medium inlet 5514 and the medium outlet 5515 can be switched, and the control operation is very convenient and fast.

[0231] It should be noted that the reversing power component 553 can be a linear motor, a cylinder, a thread pump, or other structure that can be flexibly driven and controlled by electrical energy and electrical signals.

[0232] In order to facilitate the realization of different passages when the reversing plunger 552 is in different positions, the positional relationship between the various ports can be arranged on the valve body 551 along the movement direction of the reversing plunger 552 by adapting the structure of the plunger. Figure 20 and Figure 21 In some embodiments of this embodiment, along the extension direction of the reversing plunger 552, the pump input port 5512, the medium input port 5514, the pump output port 5513, and the medium output port 5515 on the valve body 551 are sequentially arranged at intervals. The reversing plunger 552 is sequentially provided with a first communicating portion 5522 and a second communicating portion 5523 that are not connected to each other along the same direction. The reversing plunger 552 also has a reflux hole 5521 inside. One end of the reflux hole 5521 is located at the end of the reversing plunger 552, and the other end is located at the first communicating portion 5522.

[0233] Reference Figure 20In the first position, the reversing plunger 552 moves toward the inside of the reversing cavity 5511 , the first connecting portion 5522 connects the pump input port 5512 with the medium input port 5514 , and the second connecting portion 5523 connects the pump output port 5513 with the medium output port 5515 ;

[0234] Reference Figure 21 In the second position, the reversing plunger 552 moves to the outside of the reversing cavity 5511, the reflux hole 5521 and the first connecting portion 5522 connect the pump input port 5512 with the medium output port 5515, and the second connecting portion 5523 connects the pump output port 5513 with the medium input port 5514.

[0235] Since the pump input port 5512, the medium input port 5514, the pump output port 5513, and the medium output port 5515 on the valve body 551 are arranged in sequence, different channels are also provided on the reversing plunger 552 along the first direction a, namely, the first communicating portion 5522, the second communicating portion 5523, and the reflux hole 5521. Thus, when the reversing plunger 552 moves to different positions along the first direction a, the first communicating portion 5522, the second communicating portion 5523, and the reflux hole 5521 also change positions together, and the corresponding connection relationship with the pump input port 5512, the medium input port 5514, the pump output port 5513, and the medium output port 5515 also changes, thereby ultimately realizing functions such as switching the medium flow direction.

[0236] In order to facilitate the assembly of the equipment and the connection of the transmission pipeline 4, refer to Figure 19 、 Figure 20 、 Figure 21 The pump input port 5512 and the pump output port 5513 are located on the same side of the valve body 551, the medium input port 5514 and the medium output port 5515 are located on the other side of the valve body 551, and the first connecting portion 5522 and the second connecting portion 5523 are both annular recesses formed on the outer wall of the reversing plunger 552.

[0237] Since the pump input port 5512 and the pump output port 5513 are located on the same side of the valve body 551, that is, the interfaces connected to the input and output ports of the pump 54 are on the same side, the layout and connection are convenient; and since the medium input port 5514 and the medium output port 5515 are located on the other side of the valve body 551, that is, the interface connected to the lifting mechanism 2 is on the other side, the layout is convenient.

[0238] Based on this, in order to facilitate the alignment and communication between the reversing plunger 552 and the corresponding interface when the reversing plunger 552 moves in the first direction a, the first communication portion 5522 and the second communication portion 5523 are both formed as annular recesses on the outer wall of the reversing plunger 552. The annular recesses can easily connect interfaces located on different sides.

[0239] In the embodiment of the handling device of the present application, the medium pressure may be too low or too high during the process of being input into the pressure chamber 211. Excessively low pressure may not be sufficient to support the target object or achieve lifting action, while excessive pressure may damage the pipeline or components. Therefore, it is more appropriate to maintain the medium pressure in the medium supply passage within an appropriate range.

[0240] In order to achieve the above effect, refer to Figure 22 、 Figure 23 、 Figure 24 In some embodiments of the transport device, the transport device further includes a pressure-maintaining mechanism 6, which includes a pressure-maintaining shell 61, a valve core member 62, and a pressure-maintaining recovery member 63. A pressure-maintaining chamber 64 is formed inside the pressure-maintaining shell 61. The pressure-maintaining shell 61 is provided with a passage inlet 611, a passage outlet 612, and a pressure relief port 613 that are connected to the pressure-maintaining chamber 64. The passage inlet 611 is connected to an external power source, and the passage outlet 612 is connected to the piston lifting assembly 21. The valve core member 62 is arranged in the pressure-maintaining chamber 64, close to the pressure relief port 613, and is movably connected to the pressure-maintaining shell 61. The pressure relief port 613 is connected to the outside world. When the valve core member 62 is in the first position, the valve core member 62 blocks the pressure relief port 613. When the valve core member 62 is in the second position, the valve core member 62 opens the pressure relief port 613.

[0241] The pressure-maintaining and restoring member 63 is disposed between the valve core member 62 and the pressure-maintaining housing 61 , and the pressure-maintaining and restoring member 63 has a tendency to locate the valve core member 62 in the first position.

[0242] Furthermore, the pressure-maintaining recovery member 63 is arranged in cooperation with the valve core member 62 to apply a continuous thrust to the valve core member 62 , thereby blocking the communication between the pressure relief port 613 and the passage inlet 611 and the passage outlet 612 .

[0243] The pressure maintaining mechanism 6 is connected to the medium supply passage of the pressure chamber 211 and can seal or open the pressure relief port by placing the valve core 62 in the first position or the second position.

[0244] Of course, the pressure maintaining mechanism 6 may also be configured to connect the medium supply passage to the outside only when the pressure value of the medium passing through the pressure maintaining mechanism 6 is greater than or equal to the first threshold value.

[0245] Since a pressure-maintaining mechanism 6 is provided in the medium supply passage, the pressure-maintaining mechanism 6 has an initial setting of a first threshold value. When the pressure value of the medium is less than the first threshold value, the pressure-maintaining mechanism 6 does not work, and the medium supply passage is kept unobstructed, and the medium can continue to be input to increase the pressure value. When the pressure value of the medium is greater than or equal to the first threshold value, the pressure-maintaining mechanism 6 works, connects the medium supply passage with the outside world, and can release the pressure of the medium, so that the entire medium supply passage is within a safe pressure value range.

[0246] The pressure-maintaining mechanism 6 can be used to maintain pressure and detect the pressure value of the medium. In addition, the pressure-maintaining mechanism 6 can be applied to a solution in which the power source 5 of the transport device is detachable relative to the connecting frame 1. If the transport device needs to be released, the power source 5 can be directly removed to completely release the medium.

[0247] The first threshold value of pressure maintenance can be achieved by the pressure maintaining recovery component 63. Specifically, when the medium pressure value passing through the pressure maintaining chamber 64 is greater than or equal to the first threshold value, the valve core component 62 can overcome the thrust of the pressure maintaining recovery component 63 and connect the pressure relief port 613 with the passage inlet 611 and the passage outlet 612.

[0248] The pressure-maintaining recovery member 63 continuously applies thrust to the valve core member 62. When the pressure of the medium passing through the pressure-maintaining chamber 64 is greater than or equal to a first threshold, the valve core member 62 can overcome the thrust of the pressure-maintaining recovery member 63 and thereby achieve pressure relief. When the pressure of the medium passing through the pressure-maintaining chamber 64 is less than the first threshold, the valve core member 62 is pushed back by the thrust of the pressure-maintaining recovery member 63, blocking the pressure relief port 613 from the passage inlet 611 and the passage outlet 612, and no longer achieving pressure relief. This automatically adjusts the pressure in the medium supply passage to within a set range.

[0249] The pressure-maintaining and restoring member 63 may be a spring.

[0250] In addition, the setting of the pressure maintaining mechanism 6 is also equivalent to constantly detecting the pressure in the medium supply pipeline. Of course, a separate pressure detection unit can also be set in the medium supply pipeline itself, or the pressure detection unit can be integrated into the pressure maintaining mechanism 6.

[0251] In order to reduce the impact on the medium supply path, refer to Figure 23 、 Figure 24 In some embodiments, the passage inlet 611 and the passage outlet 612 are arranged opposite to each other and extend along the same axis. The valve core 62 can move in a direction perpendicular to the extension direction of the passage inlet 611 to open or block the communication between the pressure relief port 613 and the passage inlet 611 and the passage outlet 612.

[0252] Because the passage inlet 611 and the passage outlet 612 extend along the same axis and are arranged relative to each other, they can directly connect to the circulating medium when the pressure is not released, and the medium flows smoothly. On this basis, the movement direction of the valve core member 62 is perpendicular to the extension direction of the passage inlet 611, which does not interfere with the passage flow space, facilitating layout and implementation.

[0253] The pressure maintaining mechanism 6 needs to withstand a large medium pressure. In order to facilitate assembly and implementation, the pressure maintaining housing 61 can be assembled from multiple structures. For example, refer to Figure 24In some embodiments of the pressure-maintaining mechanism 6, the pressure-maintaining housing 61 includes a pressure-maintaining seat 614, a sealing seat 615, and a pressure-maintaining cover 616. The passage inlet 611 and the passage outlet 612 are provided on the pressure-maintaining seat 614. The sealing seat 615 is covered on the pressure-maintaining seat 614. A valve port is provided in the middle portion. The pressure-maintaining cover 616 is covered on the sealing seat 615. The pressure relief port 613 is provided on the pressure-maintaining cover 616. The upper end of the valve core member 62 is in clearance fit with the pressure relief port 613, and the lower end is in sealing fit with the valve port. The pressure-maintaining recovery member 63 is provided in the pressure-maintaining cover 616, and its two ends are respectively in contact with the pressure-maintaining cover 616 and the valve core member 62.

[0254] When the pressure value of the medium passing through the pressure-maintaining chamber 64 is greater than or equal to the first threshold, the valve core 62 moves toward the pressure-maintaining cover 616 to open the valve port.

[0255] Here, the pressure-maintaining shell 61 can include a pressure-maintaining seat 614, a sealing seat 615 and a pressure-maintaining cover 616. After assembly, the three can form the basic structure of the pressure-maintaining shell 61, which is convenient for production and assembly, and has a simple structure, realizing the assembly of the pressure relief space and the valve core part 62.

[0256] It should be noted that the pressure release of the pressure-maintaining mechanism 6 is automatically carried out according to the pressure in the medium supply passage. It is possible that the staff did not notice it when releasing the pressure and would continue to pressurize it, thereby causing a waste of resources and wasted effort. Therefore, in the pressure-maintaining mechanism 6 of the present application, a buzzer structure can be added to the pressure relief path of the pressure-maintaining mechanism 6, which can make a sound when the medium is released from here, thereby reminding personnel to stop pressurizing. For example, the valve core member 62 and the pressure relief port 613 can be clearance-fitted. By setting a gap between the valve core and the pressure relief port 613, it can make a sound when the gas medium passes through. Alternatively, a whistle component is provided at the pressure relief port 613.

[0257] The pressure maintaining mechanism 6 of the above embodiment is to automatically release the pressure. In the embodiment of the handling device of the present application, the pressure can also be released actively. Figure 25 、 Figure 26 、 Figure 27 In some embodiments, the transport device further includes a pressure relief mechanism 7, which is connected to the medium supply passage of the piston lifting assembly 21. The pressure relief device includes a pressure relief housing 71, a pressure relief member 72, and a pressure relief recovery member 74. A pressure relief accommodating chamber 73 is formed in the pressure relief housing 71. The pressure relief accommodating chamber 73 includes a flow chamber 731 and a pressure relief chamber 732. The flow chamber 731 is connected to the medium supply passage, and the pressure relief chamber 732 is connected to the outside. A pressure relief port 721 is provided on the pressure relief member 72. The pressure relief member 72 can be moved along the inner wall of the pressure relief accommodating chamber 73 to a pressure relief position and a pressure holding position under force.

[0258] In the pressure release position, the pressure release port 721 connects the flow chamber 731 and the pressure release chamber 732; in the pressure holding position, the pressure release port 721 blocks the flow chamber 731;

[0259] Pressure-releasing recovery member 74 is coupled to pressure-releasing member 72 and has a tendency to shift pressure-releasing member 72 from the pressure-releasing position toward the pressure-maintaining position. Due to the provision of pressure-releasing mechanism 7, pressure-releasing member 72 can be manipulated to move along the inner wall of pressure-releasing chamber 73, thereby connecting or blocking flow chamber 731 and pressure-releasing chamber 732, thereby actively releasing the medium pressure within the medium supply path.

[0260] In addition, the pressure relief mechanism 7 can be suitable for a solution in which the power source 5 of the transport device cannot be disassembled relative to the connecting frame 1. By operating the pressure relief part 72 of the pressure relief mechanism 7 to move its position, the medium can be completely released without destroying the medium supply path, such as unplugging the corresponding pipeline, etc., and only manual operation of the pressure relief part 72 is required.

[0261] Reference Figure 25 、 Figure 26 、 Figure 27 , an example is shown of an implementation of a pressure relief housing 71 of a pressure relief mechanism 7, wherein the pressure relief housing 71 is provided with a pressure relief mounting opening 711, one end of a pressure relief member 72 is slidably connected to the pressure relief mounting opening 711, and the pressure relief member 72 is movable along the inner wall of the pressure relief accommodating chamber 73 to a pressure relief position and a pressure holding position;

[0262] In the pressure releasing position, the pressure releasing member 72 is located in the accommodating cavity, and the pressure releasing port 721 connects the circulation cavity 731 and the pressure releasing cavity 732 ; in the pressure maintaining position, one end of the pressure releasing member 72 passes through the pressure releasing installation port 711 , and the pressure releasing port 721 is blocked from the circulation cavity 731 .

[0263] With this design, one end of the pressure relief member 72 can be moved through the pressure relief installation opening 711. When manual pressure relief is required, the pressure relief member 72 can be easily moved to a different position, thereby connecting the pressure relief opening 721 to the flow chamber 731 and the pressure relief chamber 732. External force can be easily applied to the pressure relief member 72 to adjust its position.

[0264] When pressure release is complete, the pressure-releasing member 72 needs to be returned to the pressure-holding position. This can be done manually or automatically by means of an elastic structure. When pressure release is required, the pressure-releasing member 72 can be moved from the pressure-holding position toward the pressure-releasing position by pressing or stepping on it. After pressure release is complete, the external force applied by the pressure-releasing recovery member 74 to the pressure-releasing member 72 causes the member 72 to move from the pressure-releasing position toward the pressure-holding position, automatically returning to the pressure-holding position. This makes operation much simpler and easier.

[0265] The pressure relief recovery member 74 can be a spring.

[0266] In the transport device of the present application, after the transport is completed and the medium is depressurized, there may be a problem of residual medium in the medium supply path, which may cause the lifting mechanism 2 to be incompletely retracted, making it difficult to store and carry. Therefore, in order to solve this problem, refer to Figure 28 、 Figure 29 In some embodiments of the transport device of the present application, the transport device may further include a recovery mechanism 8, which includes a recovery shell 81, a recovery piston 82, and a recovery recovery member 84. A recovery chamber 83 is formed in the recovery shell 81, and a recovery port 811 is provided on the recovery shell 81. The recovery port 811 is used to connect the recovery chamber 83 with the medium supply passage. When the recovery piston 82 slides sealingly along the inner wall of the recovery chamber 83, the recovery chamber 83 generates a negative pressure to recover the medium in the medium supply passage, wherein the volume of the recovery chamber 83 is equal to or greater than the volume of the medium supply passage.

[0267] The recovery member 84 is disposed between the recovery piston 82 and the recovery chamber 83 , and has a tendency to move the recovery piston 82 toward the recovery port 811 .

[0268] Furthermore, when the transport device needs to relieve pressure, the recovery chamber 83 in the recovery mechanism 8 can generate negative pressure, and the medium remaining in the medium supply path can be recovered into the recovery chamber 83, realizing the medium recovery function, solving the problem of medium being difficult to recover or medium residue, and thus facilitating the storage and carrying of the transport device.

[0269] The recovery chamber 83 in the recovery mechanism 8 can recover part of the medium at one time, or can recover all of the medium at one time. In some embodiments, the volume of the recovery chamber 83 is equal to or greater than the volume in the medium supply passage.

[0270] In this way, on the one hand, all media can be recovered in the recovery chamber 83 to achieve a complete recovery function; on the other hand, a single stroke action in the recovery chamber 83 can generate sufficient negative pressure, reducing the operating steps and actions, and further facilitating the recovery operation.

[0271] The recovery piston 82 can slide in a sealed manner in the recovery chamber 83 , so that negative pressure can be generated in the recovery chamber 83 , thereby achieving the function of medium recovery.

[0272] The movement of the recovery piston 82 can be driven by an external force or other power element. The process of generating negative pressure and the process of returning to the initial state of the recovery piston 82 are two opposite strokes, and both strokes can be driven by an external force or other power element. The external force can be manually operated, or a restorable force can be set to achieve automatic recovery. Furthermore, the recovery mechanism 8 should be in its initial state before recovering the medium to generate sufficient negative pressure space.

[0273] The provision of the recovery member 84 allows the recovery mechanism 8 to remain in its initial state within the recovery medium chamber 511, providing sufficient negative pressure. Furthermore, the recovery member 84 can also be used to return the recovery piston 82 to its initial state. Specifically, when the external force acting on the recovery piston 82 is removed, the restoring force of the recovery member 84 automatically moves the recovery piston 82 toward the recovery port 811, returning the recovery piston 82 to its initial state.

[0274] The recovery member 84 may be an elastic member such as a spring.

[0275] In order to facilitate personnel operation, refer to Figure 29 In some embodiments of the recovery mechanism 8, the axial direction of the recovery chamber 83 extends in the vertical direction, and the recovery piston 82 can slide in the recovery chamber 83 in the vertical direction. A recovery operation port 812 is provided above the recovery shell 81, and the upper end of the recovery piston 82 is cooperatedly arranged in the recovery operation port 812. The recovery port 811 is arranged near the top of the recovery chamber 83. When the upper end of the recovery piston 82 is subjected to external force, the recovery piston 82 moves downward to generate negative pressure in the recovery chamber 83.

[0276] In this way, when recovery is needed, personnel only need to press or step on the recovery piston 82, and the recovery piston 82 will move downward under the external force in the vertical direction, so that negative pressure is generated in the recovery chamber 83, thereby realizing medium recovery.

[0277] Reference Figure 28 、 Figure 29 The recovery mechanism 8 of this embodiment has a recovery housing 81 that is a disc-shaped structure, formed by a sealed connection of two upper and lower components. The entire recovery chamber 83 is shaped like a pancake, ensuring sufficient negative pressure space while reducing the height occupied. This facilitates the fixing of the recovery mechanism 8 to the bracket without affecting the overall height of the transport device. In this embodiment, the recovery recovery member 84 can be a spring disposed within the recovery chamber 83. The lower end of the spring abuts the bottom surface of the recovery chamber 83, and the upper end abuts the inside of the recovery piston 82. When the recovery piston 82 is stepped on, the spring is elastically compressed, thereby generating an elastic force to return the recovery piston 82 to its initial state when no external force is applied to the recovery piston 82.

[0278] In other embodiments of the recovery mechanism 8, the recovery mechanism 8 also includes a crank-connecting rod mechanism 85, the axial direction of the recovery chamber 83 extends in the horizontal direction, the recovery piston 82 can slide in the recovery chamber 83 in the horizontal direction, the recovery port 811 is set at one end of the recovery chamber 83 in the axial direction, and the end of the recovery piston 82 away from the recovery port 811 is connected to the crank-connecting rod mechanism 85, and the crank-connecting rod mechanism 85 is used to convert the force in the direction of gravity into a force that moves the recovery piston 82 away from the recovery port 811.

[0279] In this embodiment, the recovery piston 82 slides in the recovery chamber 83 along the horizontal direction, which can facilitate the setting of the recovery chamber 83. There is enough space in the horizontal direction to set a sufficiently long stroke, which is convenient for setting the volume of the recovery chamber 83.

[0280] In order to realize the movement of the recovery piston 82 in the recovery chamber 83 in the horizontal direction, refer to Figure 30 、 Figure 31 The crank-connecting rod mechanism 85 may include a crank pedal 851, a recovery connecting rod 852 and a guide seat 853. One side of the crank pedal 851 is hinged to the recovery housing 81, and the other side is connected to the first end of the recovery connecting rod 852. The second end of the recovery connecting rod 852 is hinged to the end of the recovery piston 82 away from the recovery port 811. The guide seat 853 is provided with a guide groove 8531 extending in the horizontal direction. The second end of the recovery connecting rod 852 and the end of the recovery piston 82 away from the recovery port 811 are both rotatably and slidably arranged in the guide groove 8531.

[0281] In this way, when the crank pedal 851 is subjected to the force in the direction of gravity, the angle between the crank pedal 851 and the recovery connecting rod 852 gradually increases, and the second end of the recovery connecting rod 852 drives the end of the recovery piston 82 away from the recovery port 811 to move along the guide groove 8531, and the recovery piston 82 moves away from the recovery port 811.

[0282] The crank pedal 851 and the recovery connecting rod 852 in the crank-connecting rod mechanism 85 can convert the force applied to the crank pedal 851 into horizontal movement of the recovery piston 82. The crank pedal 851 can be easily pressed or stepped on to input force, making operation convenient. The guide groove 8531 on the guide seat 853 can guide the movement of the recovery piston 82 to prevent it from getting stuck.

[0283] In this embodiment, referring to Figure 31The recovery shell 81 is a shell having a cylindrical structure extending in the horizontal direction, and a plate-like support supporting the cylindrical structure. One side of the crank pedal 851 is hinged to the support or one side of the cylindrical structure. The recovery recovery member 84 can be a tension spring arranged on the outside of the recovery shell 81, one end of the tension spring is fixed to one side of the guide seat 853 of the cylindrical structure principle, and the other end is fixed to the position where the recovery piston 82 is hinged to the guide seat 853. In this way, when the recovery piston 82 moves along the guide seat 853, the spring will be stretched to produce elastic deformation, and then generate elastic force to return the recovery piston 82 to its initial state when the recovery piston 82 is not subjected to external force.

[0284] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A transport device, characterized in that: include: a plurality of lifting mechanisms, wherein one of the plurality of lifting mechanisms is capable of being extended and retracted; a connecting frame connecting the plurality of lifting mechanisms, the connecting frame comprising a first bracket and a second bracket, a portion of the plurality of lifting mechanisms being disposed on the first bracket, and another portion being disposed on the second bracket, the first bracket and the second bracket being movably connected, and having at least a first posture and a second posture when the first bracket and the second bracket are relatively movable; In the first posture, the first bracket and the second bracket are close to each other; In the second posture, the first bracket and the second bracket are separated.

2. The transport device according to claim 1, wherein: The middle portion of the first bracket and the middle portion of the second bracket are rotatably connected.

3. The transport device according to claim 1, wherein: The connecting frame further includes a connecting rod mechanism, and the first bracket and the second bracket are rotatably connected to two ends of the connecting rod mechanism respectively.

4. The transport device according to claim 3, wherein: The first end of the link mechanism is rotatably connected to the first bracket, and the second end of the link mechanism is rotatably connected to the second bracket and slidably connected along the extension direction of the second bracket; Alternatively, the first end of the link mechanism is rotatably connected to the first bracket and is slidably connected along the extension direction of the first bracket, and the second end of the link mechanism is rotatably connected to the second bracket and is slidably connected along the extension direction of the second bracket.

5. The transport device according to claim 3, wherein: The connecting rod mechanism includes at least a first connecting rod and a second connecting rod, one end of the first connecting rod is rotatably connected to one end of the second connecting rod, the first bracket is rotatably connected to the other end of the first connecting rod, and the second bracket is rotatably connected to the other end of the second connecting rod.

6. The transport device according to claim 5, characterized in that There are at least two groups of the link mechanisms, and the arrangement direction of the at least two groups of the link mechanisms includes the extension direction of the first bracket.

7. The transport device according to claim 6, characterized in that The connecting rod mechanism further includes a connecting rod, and both ends of the connecting rod are rotatably connected to the first connecting rod and the second connecting rod in two adjacent connecting rod mechanisms.

8. The transport device according to claim 1, wherein: The connecting frame further comprises an articulated mechanism, wherein the articulated mechanism comprises a first articulated member and a second articulated member, wherein the middle portion of the first articulated member and the middle portion of the second articulated member are rotatably connected. The first end of the first hinge is hinged to the first bracket, the second end of the first hinge is rotatably connected to the second bracket and slidably connected along the extension direction of the second bracket, the first end of the second hinge is hinged to the second bracket, and the second end is rotatably connected to the first bracket and slidably connected along the extension direction of the first bracket. Alternatively, the first end of the first hinge is rotatably connected to the first bracket and is slidably connected along the extension direction of the first bracket, the second end of the first hinge is rotatably connected to the second bracket and is slidably connected along the extension direction of the second bracket, the first end of the second hinge is rotatably connected to the second bracket and is slidably connected along the extension direction of the second bracket, and the second end is rotatably connected to the first bracket and is slidably connected along the extension direction of the first bracket.

9. The transport device according to claim 8, characterized in that The first hinge and the second hinge have the same length and are rotatably connected through a center position.

10. The transport device according to claim 1, wherein: When the first bracket and the second bracket move relative to each other, a third posture is also included; In the third position, the distance between the first bracket and the second bracket is smaller than the distance in the second position and larger than the distance in the first position.

11. The transport device according to claim 1, wherein: The connecting frame also includes a locking structure, which is arranged on the first bracket and the second bracket, or on a transmission path in which the first bracket and the second bracket are movably connected; in the second position, the locking structure can lock the relative position relationship between the first bracket and the second bracket.

12. The transport device according to any one of claims 1 to 11, characterized in that: A portion of the plurality of lifting mechanisms is disposed at an end portion of the first bracket, and another portion of the plurality of lifting mechanisms is disposed at an end portion of the second bracket.

13. The transport device according to any one of claims 1 to 11, characterized in that: The lifting mechanism includes a piston lifting assembly and a roller assembly. The piston lifting assembly can be extended and retracted along a first direction. The piston lifting assembly is installed on the connecting frame. The telescopic end of the piston lifting assembly is connected to the roller assembly. When the piston lifting assembly is in a retracted state, the height of the lifting mechanism is less than 30 mm.

14. The transport device according to claim 13, wherein: When the piston lifting assembly is in a retracted state, the height of the lifting mechanism is less than 20 mm.

15. The transport device according to claim 13, wherein: The lifting stroke of the piston lifting assembly is greater than 10 mm.

16. The transport device according to claim 15, characterized in that The lifting stroke of the piston lifting assembly is greater than 12 mm.

17. The transport device according to claim 13, wherein: The roller assembly includes a roller and a roller bracket, one end of the roller bracket is rotatably connected to the piston lifting assembly, the rotation axis of the roller bracket is parallel to the first direction, the roller is rotatably connected to the other end of the roller bracket, the rotation axis of the roller is perpendicular to the first direction, and the rotation axis of the roller and the rotation axis of the roller bracket are arranged at intervals.

18. The transport device according to claim 13, wherein: One end of the piston lifting assembly connected to the roller assembly has a recessed portion, and the roller assembly is arranged in the recessed portion.

19. The transport device according to any one of claims 1 to 11, characterized in that: A jacking installation hole is opened on the connecting frame, and the jacking mechanism is passed through the jacking installation hole and fixed on the connecting frame.

20. The transport device according to any one of claims 1 to 11, characterized in that: The transport device further includes a power source, which is connected to the plurality of lifting mechanisms and is used to drive the plurality of lifting mechanisms to move upward and downward.

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