Lifting device and conveying system

Abstract

The lifting device comprises a first stand column mechanism and a second stand column mechanism, and the first stand column mechanism and the second stand column mechanism are arranged side by side at intervals in the first direction of the lifting device; the strut beam mechanism is connected to the first stand column mechanism and the second stand column mechanism. The first lifting driving mechanism is arranged on the first stand column mechanism, and the second lifting driving mechanism is arranged on the second stand column mechanism; the tray mechanism is arranged between the first stand column mechanism and the second stand column mechanism, and the tray mechanism is in transmission connection with the first lifting driving mechanism and the second lifting driving mechanism so as to achieve lifting movement in the second direction of the lifting device. The structural strength and stability of the first stand column mechanism and the second stand column mechanism are enhanced, fatigue bending deformation of the first stand column mechanism and the second stand column mechanism is prevented, and then the lifting moving precision, stability and reliability of the lifting device on the conveying trolley are prevented from being affected.

Description

Technical Field

[0001] The present application relates to the technical field of automated conveying equipment, and in particular to a lifting device and a conveying system. Background Art

[0002] Automobile manufacturers are increasingly using automobile welding production lines for automobile welding processing, achieving the effects of improving quality, increasing efficiency and reducing costs. Currently, most automobile welding production lines adopt a double-layer conveyor line structure design, that is, the automobile welding production line includes an upper conveyor line and a lower conveyor line. After the conveyor trolley carries the workpiece through the upper conveyor line to the target workstation, the empty conveyor trolley returns to the loading station through the lower conveyor line. Elevators are also arranged at the ends of the upper and lower conveyor lines, and the conveyor trolleys use the elevators to circulate between the upper and lower conveyor lines.

[0003] Traditional lifts include scissor lifts, four-post lifts, and cantilever lifts. Scissor lifts and four-post lifts are complex, occupy large areas, and have poor versatility. Cantilever lifts, due to the limited force on the cantilever arm, are prone to fatigue bending and deformation, affecting positioning accuracy and preventing the transport trolley from moving normally and safely between the upper and lower conveyor lines. Summary of the Invention

[0004] Based on this, it is necessary to provide a lifting device and conveying system to address the problems of complex structure, large footprint, low stability and reliability.

[0005] In a first aspect of the present application, a lifting device is provided, comprising:

[0006] a first column mechanism and a second column mechanism, wherein the first column mechanism and the second column mechanism are arranged side by side and spaced apart along a first direction of the lifting device;

[0007] a supporting beam mechanism connected to the first column mechanism and the second column mechanism;

[0008] a first lifting drive mechanism and a second lifting drive mechanism, wherein the first lifting drive mechanism is provided on the first column mechanism, and the second lifting drive mechanism is provided on the second column mechanism; and

[0009] The tray mechanism is arranged between the first column mechanism and the second column mechanism, and the tray mechanism is transmission-connected with the first lifting drive mechanism and the second lifting drive mechanism to achieve lifting movement along the second direction of the lifting device.

[0010] The lifting device of this scheme is applied to the conveying system to realize driving the conveying trolley to lift and transfer between the upper conveying line body and the lower conveying line body. During operation, after the conveying trolley moves to the tray mechanism, the first lifting drive mechanism and the second lifting drive mechanism are started and output power to the tray mechanism to drive the tray mechanism to lift and move, thereby realizing the transfer of the conveying trolley from the lower conveying line body to the upper conveying line body or from the upper conveying line body to the lower conveying line body; since the tray mechanism is arranged between the first column mechanism and the second column mechanism, and the first lifting drive mechanism is installed on the first column mechanism and the second lifting drive mechanism is installed on the second column mechanism, the structure of each mechanism is compact and the required installation site area is small. At the same time, a support beam mechanism is adopted to connect the first column mechanism and the second column mechanism to form reinforcement and lateral support for the first column mechanism and the second column mechanism, thereby strengthening the structural strength and stability of the first column mechanism and the second column mechanism, preventing the first column mechanism and the second column mechanism from fatigue bending deformation, and thus avoiding affecting the lifting and lowering accuracy, stability and reliability of the conveying trolley by the lifting device.

[0011] The technical solution of this application is further explained below:

[0012] In one embodiment, the first lifting drive mechanism and the second lifting drive mechanism both include a power unit, a transmission unit and a counterweight unit, the power unit is in transmission connection with the transmission unit, one end of the transmission unit is connected to the tray mechanism, and the other end of the transmission unit is connected to the counterweight unit.

[0013] In one embodiment, the power unit includes a drive motor, a mounting plate and a coupling, and the transmission unit includes a drive shaft, a transmission wheel and a transmission member. The drive motor is mounted on the first column mechanism and the second column mechanism through the mounting plate, the drive motor is connected to the drive shaft through the coupling, the transmission wheel is mounted on the transmission shaft, the transmission member is wrapped around the transmission wheel, and one end of the transmission member is connected to the tray mechanism, and the other end of the transmission member is connected to the counterweight unit.

[0014] In one embodiment, the lifting device further includes a braking mechanism and a braking wheel, the braking mechanism is arranged on the first column mechanism and the second column mechanism, the braking wheel is arranged on the transmission shaft, and the braking mechanism is used to cooperate with the braking wheel in a limiting manner.

[0015] In one embodiment, the braking mechanism includes a brake seat, a brake cylinder, a brake pin, a detection switch and a brake sleeve, the detection switch and the brake cylinder are respectively arranged on the brake seat, the brake pin is transmission-connected to the piston rod of the brake cylinder, the brake sleeve is arranged on the brake seat and is provided with a communicating guide hole and a limit groove, the brake pin can be slidably passed through the guide hole and can extend into or exit the limit groove, the brake wheel is provided with a brake groove, and when the brake pin extends into the limit groove, the brake pin is inserted into the brake groove and abuts against the brake wheel for limitation.

[0016] In one embodiment, the tray mechanism includes a tray body and a first connector provided on the tray body, and one end of the transmission member is connected to the first connector;

[0017] The counterweight unit includes a counterweight box, a counterweight block and a second connector. The counterweight block is arranged in the counterweight box. The second connector is arranged in the counterweight box and connected to the other end of the transmission member.

[0018] In one embodiment, the lifting device further includes a guide mechanism, which is provided on the tray mechanism. The first column mechanism and the second column mechanism each include a column body, a guide seat and a guide rail. The guide seat and the guide rail are respectively provided on the column body, and the guide mechanism cooperates with the guide seat and the guide rail.

[0019] The counterweight unit further includes a counterweight guide wheel, which is arranged on the counterweight box and cooperates with the guide seat and the guide rail.

[0020] In one embodiment, the guide mechanism includes a first guide assembly and a second guide assembly, the first guide assembly includes a first adjustment seat, a first roller seat and a first roller group, the first adjustment seat is movably connected to the tray mechanism, the first roller seat is arranged on the first adjustment seat, the first roller group is arranged on the first roller seat and rolls with the guide seat and the guide rail;

[0021] The second guide assembly includes a second adjustment seat, a second roller seat and a second roller group. The second adjustment seat is movably connected to the tray mechanism. The second roller seat is arranged on the second adjustment seat. The second roller group is arranged on the second roller seat and rolls with the guide seat and the guide rail; wherein the first roller group and the second roller group are used to constrain the freedom of the tray mechanism along the first direction and / or the third direction of the lifting device.

[0022] In one embodiment, the first column mechanism and the second column mechanism further include an upper limit member, a lower limit member and a counterweight protection unit, the upper limit member is arranged at the top end of the column body, the lower limit member is arranged at the bottom end of the column body, the column body is provided with a hollow hole, and the counterweight protection unit is arranged in the hollow hole.

[0023] In one embodiment, the lifting device further includes a height detection component, which is connected to the tray mechanism and the column to detect the lifting height of the tray mechanism.

[0024] In one embodiment, the height detection assembly includes a mounting rod, a grating scale and a photoelectric detection device. The mounting rod is arranged on the column body, the grating scale is installed on the mounting rod, and the photoelectric detection device is installed on the tray body. The photoelectric detection device is movably installed and cooperated with the grating scale.

[0025] In one embodiment, the lifting device further includes an anti-blowout mechanism, the first column mechanism and the second column mechanism cooperate to form a working cavity, and the anti-blowout mechanism is arranged on the outside of the opening of the working cavity along the third direction of the lifting device.

[0026] In one embodiment, the lifting device further includes a lubricator, and the lubricator is disposed on the supporting beam mechanism.

[0027] In a second aspect of the present application, a conveying system is further provided, which includes the lifting device as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings that constitute a part of this application are used to provide further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute improper limitations on this application.

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0030] Figure 1 This is a schematic diagram of the axonometric structure of a lifting device according to an embodiment.

[0031] Figure 2 Schematic diagram of the structure of the first column mechanism of one embodiment.

[0032] Figure 3 Schematic diagram of the structure of a tray mechanism according to an embodiment.

[0033] Figure 4 This is a schematic structural diagram of a first guide assembly according to an embodiment.

[0034] Figure 5 Schematic diagram of the structure of the second guide assembly of one embodiment.

[0035] Figure 6 Schematic diagram of the structure of a power unit according to an embodiment.

[0036] Figure 7 Schematic diagram of the structure of a counterweight unit according to an embodiment.

[0037] Figure 8 2 is a schematic structural diagram of a transmission unit according to an embodiment.

[0038] Figure 9 Schematic diagram of the structure of a braking mechanism according to an embodiment.

[0039] Figure 10 Schematic diagram of the structure of a height detection component according to an embodiment.

[0040] Description of reference numerals:

[0041] 100, lifting device; 10, first column mechanism; 20, second column mechanism; 30, supporting beam mechanism; 40, first lifting drive mechanism; 40a, power unit; 41a, drive motor; 42a, mounting plate; 43a, coupling; 40b, transmission unit; 41b, transmission shaft; 42b, transmission wheel; 43b, transmission member; 40c, counterweight unit; 41c, counterweight box; 42c, counterweight block; 43c, second connector; 44c, counterweight guide wheel; 40d, brake wheel; 40e, column; 40f, guide seat; 40g, guide rail; 40h, upper limit member; 40i, lower limit member; 40j, counterweight protection unit; 50. Second lifting drive mechanism; 60. Tray mechanism; 61. Tray body; 62. First connecting body; 70. Braking mechanism; 71. Braking seat; 72. Braking cylinder; 73. Braking pin; 74. Detection switch; 75. Braking sleeve; 80. Guide mechanism; 81. First guide assembly; 811. First adjustment seat; 812. First roller seat; 813. First roller group; 82. Second guide assembly; 821. Second adjustment seat; 822. Second roller seat; 823. Second roller group; 90. Height detection assembly; 91. Mounting rod; 92. Grating scale; 93. Photoelectric detection device; 90a. Anti-extrusion mechanism; 90b. Lubricator. DETAILED DESCRIPTION

[0042] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0043] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0044] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0045] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0046] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0047] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0048] See Figure 1 , which is a lifting device 100 shown in an embodiment of the present application, includes a first column mechanism 10, a second column mechanism 20, a support beam mechanism 30, a first lifting drive mechanism 40, a second lifting drive mechanism 50 and a tray mechanism 60.

[0049] The lifting device 100 has a cubic shape, so the lifting device 100 has a first direction, a second direction, and a third direction. More specifically, the first direction corresponds to the width direction of the lifting device 100, that is, Figure 1 The second direction corresponds to the length direction of the lifting device 100, that is, Figure 1 The third direction corresponds to the height direction of the lifting device 100, that is, Figure 1 The Y-axis direction in .

[0050] In the present application, when the lifting device 100 is in an installed and used state, the length direction is in the vertical direction, and the width direction and the height direction are both in the horizontal direction.

[0051] The first column mechanism 10 and the second column mechanism 20 are arranged side by side and spaced apart along the first direction of the lifting device 100; the supporting beam mechanism 30 is connected to the first column mechanism 10 and the second column mechanism 20. The installation method can be at least one of screw connection, clamping connection, welding, bonding, riveting, etc., which can be flexibly selected according to needs.

[0052] The first lifting drive mechanism 40 is arranged on the first column mechanism 10, and the second lifting drive mechanism 50 is arranged on the second column mechanism 20; the tray mechanism 60 is arranged between the first column mechanism 10 and the second column mechanism 20, and the tray mechanism 60 is transmission-connected with the first lifting drive mechanism 40 and the second lifting drive mechanism 50 to realize lifting and moving along the second direction of the lifting device 100.

[0053] In summary, the implementation of the technical solution of this embodiment will achieve the following beneficial effects: the lifting device 100 of this solution is applied to the conveying system to realize the driving of the conveying trolley to move up and down between the upper conveying line body and the lower conveying line body. During operation, when the conveying trolley moves to the tray mechanism 60, the first lifting drive mechanism 40 and the second lifting drive mechanism 50 are started and output power to the tray mechanism 60 to drive the tray mechanism 60 to move up and down, thereby realizing the transfer of the conveying trolley from the lower conveying line body to the upper conveying line body or from the upper conveying line body to the lower conveying line body; since the tray mechanism 60 is arranged between the first column mechanism 10 and the second column mechanism 20, and the first column mechanism 10 and the second column mechanism 20 are ... The lifting drive mechanism 40 is installed on the first column mechanism 10 and the second lifting drive mechanism 50 is installed on the second column mechanism 20, so that the structure of each mechanism is compact and the required installation site area is small. At the same time, the support beam mechanism 30 is connected to the first column mechanism 10 and the second column mechanism 20 to form reinforcement and lateral support for the first column mechanism 10 and the second column mechanism 20, thereby strengthening the structural strength and stability of the first column mechanism 10 and the second column mechanism 20, preventing the first column mechanism 10 and the second column mechanism 20 from fatigue bending deformation, thereby avoiding affecting the lifting and moving accuracy, stability and reliability of the lifting device 100 on the conveying trolley.

[0054] Please continue reading Figures 6 to 8 In one embodiment, the first lifting drive mechanism 40 and the second lifting drive mechanism 50 both include a power unit 40a, a transmission unit 40b and a counterweight unit 40c. The power unit 40a is connected to the transmission unit 40b in a transmission manner. One end of the transmission unit 40b is connected to the tray mechanism 60, and the other end of the transmission unit 40b is connected to the counterweight unit 40c.

[0055] During operation, the counterweight unit 40c forms a force balance relationship with the tray mechanism 60 and the conveying trolley moved onto the tray mechanism 60. When the power unit 40a drives the transmission unit 40b to rotate, the counterweight unit 40c descends synchronously with the rise of the tray mechanism 60, so as to realize the conveying trolley being carried from the lower conveying line body to the upper conveying line body, or the counterweight unit 40c rises synchronously with the descending of the tray mechanism 60, so as to realize the conveying trolley being carried from the upper conveying line body to the lower conveying line body. The structure and working principle are simple, which helps to simplify the structural complexity of the lifting device 100 and reduce the manufacturing cost and the occupied area of ​​the installation site.

[0056] Please continue reading Figures 6 to 8 More specifically, in one embodiment, the power unit 40a includes a drive motor 41a, a mounting plate 42a and a coupling 43a, and the transmission unit 40b includes a transmission shaft 41b, a transmission wheel 42b and a transmission member 43b. The drive motor 41a is mounted on the first column mechanism 10 and the second column mechanism 20 through the mounting plate 42a. The drive motor 41a is connected to the transmission shaft 41b through the coupling 43a. The transmission wheel 42b is mounted on the transmission shaft 41b. The transmission member 43b is wrapped around the transmission wheel 42b, and one end of the transmission member 43b is connected to the tray mechanism 60, and the other end of the transmission member 43b is connected to the counterweight unit 40c.

[0057] During operation, the drive motor 41a transmits rotational power to the transmission shaft 41b through the coupling 43a to drive the transmission wheel 42b to rotate. When the transmission wheel 42b rotates in the clockwise direction, it drives the transmission member 43b to rotate synchronously around the transmission wheel 42b in the first direction to drive the counterweight unit 40c to descend and drive the tray mechanism 60 to rise at the same time, or when the transmission wheel 42b rotates in the counterclockwise direction, it drives the transmission member 43b to rotate synchronously around the transmission wheel 42b in the second direction to drive the counterweight unit 40c to rise and drive the tray mechanism 60 to descend at the same time.

[0058] Considering the heavy weight of the tray mechanism 60 and the transport trolley, and to prevent slippage that could affect the efficiency of the tray mechanism 60's lifting and lowering drive, and to prevent safety accidents, it is preferable to use a sprocket for the drive wheel 42b and a chain for the transmission member 43b. The meshing of the chain and sprocket provides a stable transmission ratio, strong load-bearing capacity, and high transmission reliability and safety.

[0059] Furthermore, two or more chains arranged side by side may be provided on the sprocket at the same time, so as to reduce the load of a single chain and improve the service life and reliability by sharing the weight of the tray mechanism 60 and the conveying trolley.

[0060] Of course, in other optional embodiments, the transmission wheel 42b and the transmission member 43b may adopt a synchronous pulley mechanism, etc. in addition to the above-mentioned sprocket mechanism.

[0061] Please continue reading Figures 8 and 9 In one embodiment, the lifting device 100 further includes a brake mechanism 70 and a brake wheel 40d. The brake mechanism 70 is disposed on the first column mechanism 10 and the second column mechanism 20, and the brake wheel 40d is disposed on the transmission shaft 41b. The brake mechanism 70 is used to cooperate with the brake wheel 40d to limit the position. In actual use, the lifting device 100 will inevitably experience major or minor failures and require repair and maintenance. In such cases, personnel will need to enter the lifting device 100 to perform maintenance work. In such cases, by operating the brake mechanism 70 to cooperate with the brake wheel 40d, the rotation of the brake wheel 40d can be effectively and reliably limited. This also prevents the transmission shaft 41b, the tray mechanism 60, and the like from accidentally moving and causing harm to the operator. In other words, the safety system formed by the brake mechanism 70 and the brake wheel 40d greatly improves the safety performance of the lifting device 100 and avoids personal and property losses.

[0062] Please continue reading Figure 9 For example, in one embodiment, the brake mechanism 70 includes a brake seat 71, a brake cylinder 72, a brake pin 73, a detection switch 74 and a brake sleeve 75. The detection switch 74 and the brake cylinder 72 are respectively arranged on the brake seat 71. The brake pin 73 is transmission-connected with the piston rod of the brake cylinder 72. The brake sleeve 75 is arranged on the brake seat 71 and is provided with a connected guide hole and a limit groove. The brake pin 73 is slidably passed through the guide hole and can extend into or out of the limit groove. The brake wheel 40d is provided with a brake groove. When the brake pin 73 extends into the limit groove, the brake pin 73 is inserted into the brake groove and abuts against the brake wheel 40d for a limit.

[0063] During operation, the detection switch 74 is used to detect whether the brake groove is rotated to a position aligned with the brake pin 73. When it is determined that the two are aligned, a feedback signal is immediately given to the controller. The controller controls the piston rod of the brake cylinder 72 to push the brake pin 73 out. The brake pin 73 extends into the limit groove under the guidance of the guide hole and is inserted into the brake groove. At this time, the brake pin 73 abuts against the brake wheel 40d in the circumferential direction, thereby effectively limiting the rotation of the brake wheel 40d, thereby achieving a good braking effect.

[0064] It is easy to understand that the partial rotation of the brake wheel 40d enters the limiting groove and conflicts with the side wall of the limiting groove, and the brake pin 73 passes through the guide hole and conflicts with the hole wall of the guide hole, which can increase the overall structural rigidity of the brake mechanism 70 and ensure braking reliability.

[0065] Please continue reading Figure 3In one embodiment, the tray mechanism 60 includes a tray body 61 and a first connector 62 disposed on the tray body 61. One end of the transmission member 43b is connected to the first connector 62. The tray body 61 is the main structure of the tray mechanism 60 and is used to directly load and position the conveyor trolley to lift and transfer the conveyor trolley between the lower conveyor line and the upper conveyor line.

[0066] For example, the tray body 61 is composed of a chassis and two side guards arranged on opposite sides of the chassis, which form a receiving cavity for accommodating the transport trolley. The chassis is provided with multiple weight-reducing holes to reduce the overall weight of the tray mechanism 60 by reducing material.

[0067] Please continue reading Figure 7 The counterweight unit 40c includes a counterweight box 41c, a counterweight block 42c and a second connector 43c. The counterweight block 42c is disposed in the counterweight box 41c. The second connector 43c is disposed in the counterweight box 41c and connected to the other end of the transmission member 43b.

[0068] The counterweight box 41c is used to load the integrated counterweight block 42c and the second connector 43c. The counterweight block 42c is used to form a weight balance with the tray mechanism 60 or the tray mechanism 60 and the conveying trolley; the second connector 43c and the first connector 62 are respectively connected to the corresponding ends of the transmission member 43b to realize the lifting transmission.

[0069] For example, when the transmission member 43b adopts a chain, a first hook and a second hook are respectively provided at the opposite ends of the chain in the length direction, the first connecting body 62 is the first hanging ring, and the second connecting body 43c is the second hanging ring. The first hook is hooked with the first hanging ring, and the second hook is hooked with the second hanging ring. The installation method is simple, the connection reliability is high, and the assembly and disassembly operations are convenient and labor-saving, and the feasibility is strong.

[0070] Preferably, in the present application, the power unit 40a and the transmission unit 40b are a group of four groups, two of which are installed on the first column mechanism 10, and the remaining two groups are installed on the second column mechanism 20. Therefore, four first connecting bodies 62 arranged in a rectangular structure are provided on the pallet body 61, and a total of four counterweight units 40c are provided. Thus, the pallet body 61 is connected to the four counterweight units 40c through four chains, thereby further improving the installation stability and operation reliability of the pallet mechanism 60.

[0071] Please continue reading Figure 1 , Figures 4 and 5In one embodiment, the lifting device 100 further includes a guide mechanism 80, which is arranged on the tray mechanism 60. The first column mechanism 10 and the second column mechanism 20 both include a column body 40e, a guide seat 40f and a guide rail 40g. The guide seat 40f and the guide rail 40g are respectively arranged on the column body 40e, and the guide mechanism 80 cooperates with the guide seat 40f and the guide rail 40g for guidance.

[0072] The counterweight unit 40c further includes a counterweight guide wheel 44c, which is disposed on the counterweight box 41c and cooperates with the guide seat 40f and the guide rail 40g.

[0073] That is, by setting the guide mechanism 80 to cooperate with the guide seat 40f and the guide rail 40g, and at the same time setting the counterweight guide wheel 44c to cooperate with the guide seat 40f and the guide rail 40g, the guide seat 40f and the guide rail 40g can limit the freedom of the pallet mechanism 60 and the counterweight unit 40c in directions other than the lifting and moving direction, thereby improving the smoothness of the lifting and lowering operation of the pallet mechanism 60 and the counterweight unit 40c.

[0074] Please continue reading Figures 4 and 5 Specifically, in one embodiment, the guide mechanism 80 includes a first guide assembly 81 and a second guide assembly 82. The first guide assembly 81 includes a first adjustment seat 811, a first roller seat 812 and a first roller group 813. The first adjustment seat 811 is movably connected to the tray mechanism 60. The first roller seat 812 is arranged on the first adjustment seat 811. The first roller group 813 is arranged on the first roller seat 812 and rolls with the guide seat 40f and the guide rail 40g.

[0075] The second guide assembly 82 includes a second adjustment seat 821, a second roller seat 822 and a second roller group 823. The second adjustment seat 821 is movably connected to the tray mechanism 60. The second roller seat 822 is arranged on the second adjustment seat 821. The second roller group 823 is arranged on the second roller seat 822 and rolls with the guide seat 40f and the guide rail 40g; wherein, the first roller group 813 and the second roller group 823 are used to constrain the freedom of the tray mechanism 60 along the first direction and / or the third direction of the lifting device 100.

[0076] By adjusting the first adjustment seat 811 and the second adjustment seat 821, the installation position of the first guide assembly 81 and the second guide assembly 82 on the tray body 61 can be flexibly adjusted to ensure proper contact and cooperation between the first roller assembly 813 and the second roller assembly 823 and the guide seat 40f and the guide rail 40g. The first roller seat 812 is used to provide mounting support for the first roller assembly 813, and the second roller seat 822 is used to provide mounting support for the second roller assembly 823. When the tray mechanism 60 is raised or lowered, the first roller assembly 813 and the second roller assembly 823 roll synchronously along the guide seat 40f and the guide rail 40g, thereby limiting the freedom of the tray mechanism 60 along the first direction and / or the third direction of the lifting device 100.

[0077] Specifically, the first roller group 813 and the second roller group 823 each include at least one roller arranged in the X direction and at least one roller arranged in the Y-axis direction. In this way, by means of the rollers in two directions simultaneously rolling in contact with the guide seat 40f and the guide rail 40g, it is possible to constrain the freedom of the tray mechanism 60 in the X and Y directions, so that the tray mechanism 60 only has the freedom of movement in the Z direction, thereby meeting the stable lifting and lowering of the tray mechanism 60.

[0078] Please continue reading Figure 2 In addition, based on any of the above embodiments, the first column mechanism 10 and the second column mechanism 20 further include an upper limit member 40h, a lower limit member 40i, and a counterweight protection unit 40j. The upper limit member 40h is disposed at the top of the column body 40e, and the lower limit member 40i is disposed at the bottom of the column body 40e. The column body 40e is provided with a hollow hole, and the counterweight protection unit 40j is disposed within the hollow hole. The upper limit member 40h is used to limit the position of the tray mechanism 60 when it rises to the upper limit position to prevent a top collision. The lower limit member 40i is used to limit the position of the tray mechanism 60 when it descends to the lower limit position to prevent a bottom collision. The counterweight protection unit 40j is used to isolate the counterweight unit 40c from the outside world to prevent people or objects outside the lifting device 100 from accidentally contacting the counterweight unit 40c during lifting and lowering, thereby causing a safety accident. A hollow hole is provided, and the counterweight protection unit 40j is installed in the cavity of the hollow hole so that the volume of the counterweight protection unit 40j overlaps with that of the column body 40e, thereby preventing the counterweight protection unit 40j from partially or entirely extending outside the column body 40e, thereby increasing the volume of the lifting device 100 and occupying an increased area of ​​the installation site, thereby affecting versatility.

[0079] Please continue reading Figure 1 and Figure 10Furthermore, in another embodiment, the lifting device 100 further includes a height detection assembly 90, which is connected to the tray mechanism 60 and the column 40e to detect the lifting height of the tray mechanism 60. The height detection assembly 90 can detect the lifting height of the tray mechanism 60 in real time to ensure that the tray mechanism 60 is accurately aligned with the upper conveyor line or the lower conveyor line.

[0080] Specifically, in one embodiment, the height detection assembly 90 includes a mounting rod 91, a grating scale 92, and a photoelectric detection device 93. The mounting rod 91 is mounted on the column 40e, the grating scale 92 is attached to the mounting rod 91, and the photoelectric detection device 93 is mounted on the tray body 61. The photoelectric detection device 93 and the grating scale 92 are movably mounted and engaged. During operation, the tray body 61, carrying the photoelectric detection device 93, moves up and down relative to the grating scale 92. Light passes through the gap and strikes the photoelectric detection device 93, which outputs a set of electrical signals with a 90° phase difference. These signals are processed by a conversion circuit to generate rectangular waves, which in turn provide information on the vertical displacement of the photoelectric detection device 93 (and therefore the tray body 61). This detection method offers high accuracy and low implementation cost.

[0081] Of course, in other optional embodiments, the height detection component 90 may also adopt other mature height position detection means, which will not be described here.

[0082] Please continue reading Figure 1 In another embodiment, the lifting device 100 further includes an anti-outrush mechanism 90a. The first column mechanism 10 and the second column mechanism 20 cooperate to form a working chamber. The anti-outrush mechanism 90a is disposed outside an opening on one side of the working chamber along the third direction of the lifting device 100. When the conveyor trolley moves from the lower conveyor line or the upper conveyor line onto the tray mechanism 60, the anti-outrush mechanism 90a is used to flexibly block and limit the conveyor trolley to prevent the conveyor trolley from excessive movement and out of the tray mechanism 60.

[0083] For example, the anti-bumping mechanism 90a includes an anti-bumping base and an anti-bumping block disposed on the anti-bumping base. The anti-bumping base is mounted on the floor of the work site via anchor bolts, and the anti-bumping block is fixed to the anti-bumping base via screwing, clamping, or other mounting methods. The anti-bumping block is made of an elastic or flexible material to prevent deformation or damage to the conveyor trolley caused by rigid impact with the conveyor trolley.

[0084] In another embodiment, the lifting device 100 further includes a lubricator 90b, which is disposed on the support beam mechanism 30. The lubricator 90b can be an automatic lubricator 90b or a manual lubricator 90b, and can be used to add lubricating medium to the sprocket chain, etc., to reduce component wear, improve smoothness of fit, and extend service life.

[0085] For example, the lubricating medium may be, but is not limited to, lubricating oil, lubricating grease

[0086] In addition to the above, the present application also provides a conveying system, which includes an upper conveying line body, a lower conveying line body and a lifting device 100 as described in any of the above embodiments.

[0087] The lower conveyor line body is stacked and arranged directly below the upper conveyor line body. There are two lifting devices 100, one of which is arranged at the same end of the upper conveyor line body and the lower conveyor line body, and the other lifting device 100 is arranged at the other same end of the upper conveyor line body and the lower conveyor line body. In this way, a ring-shaped conveying channel is constructed to enable the conveying trolley to flow between the upper conveyor line body and the lower conveyor line body.

[0088] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0089] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A lifting device, characterized in that: include: a first column mechanism and a second column mechanism, wherein the first column mechanism and the second column mechanism are arranged side by side and spaced apart along a first direction of the lifting device; a supporting beam mechanism connected to the first column mechanism and the second column mechanism; a first lifting drive mechanism and a second lifting drive mechanism, wherein the first lifting drive mechanism is provided on the first column mechanism, and the second lifting drive mechanism is provided on the second column mechanism; and The tray mechanism is arranged between the first column mechanism and the second column mechanism, and the tray mechanism is transmission-connected with the first lifting drive mechanism and the second lifting drive mechanism to achieve lifting movement along the second direction of the lifting device.

2. The lifting device according to claim 1, characterized in that: The first lifting drive mechanism and the second lifting drive mechanism both include a power unit, a transmission unit and a counterweight unit. The power unit is in transmission connection with the transmission unit. One end of the transmission unit is connected to the tray mechanism, and the other end of the transmission unit is connected to the counterweight unit.

3. The lifting device according to claim 2, characterized in that: The power unit includes a drive motor, a mounting plate and a coupling; the transmission unit includes a drive shaft, a transmission wheel and a transmission member; the drive motor is mounted on the first column mechanism and the second column mechanism through the mounting plate; the drive motor is connected to the drive shaft through the coupling; the transmission wheel is mounted on the transmission shaft; the transmission member is wound around the transmission wheel; one end of the transmission member is connected to the tray mechanism, and the other end of the transmission member is connected to the counterweight unit.

4. The lifting device according to claim 3, characterized in that: The lifting device further includes a braking mechanism and a braking wheel. The braking mechanism is provided on the first column mechanism and the second column mechanism. The braking wheel is provided on the transmission shaft. The braking mechanism is used for limiting cooperation with the braking wheel.

5. The lifting device according to claim 4, characterized in that: The braking mechanism includes a brake seat, a brake cylinder, a brake pin, a detection switch and a brake sleeve. The detection switch and the brake cylinder are respectively arranged on the brake seat. The brake pin is transmission-connected with the piston rod of the brake cylinder. The brake sleeve is arranged on the brake seat and is provided with a connected guide hole and a limit groove. The brake pin can be slidably passed through the guide hole and can extend into or exit the limit groove. The brake wheel is provided with a brake groove. When the brake pin extends into the limit groove, the brake pin is inserted into the brake groove and abuts against the brake wheel for limitation.

6. The lifting device according to claim 3, characterized in that: The tray mechanism includes a tray body and a first connector provided on the tray body, and one end of the transmission member is connected to the first connector; The counterweight unit includes a counterweight box, a counterweight block and a second connector. The counterweight block is arranged in the counterweight box. The second connector is arranged in the counterweight box and connected to the other end of the transmission member.

7. The lifting device according to claim 6, characterized in that: The lifting device further includes a guide mechanism, which is arranged on the tray mechanism. The first column mechanism and the second column mechanism each include a column body, a guide seat and a guide rail. The guide seat and the guide rail are respectively arranged on the column body, and the guide mechanism cooperates with the guide seat and the guide rail. The counterweight unit further includes a counterweight guide wheel, which is arranged on the counterweight box and cooperates with the guide seat and the guide rail.

8. The lifting device according to claim 7, characterized in that: The guide mechanism includes a first guide assembly and a second guide assembly, the first guide assembly includes a first adjustment seat, a first roller seat and a first roller group, the first adjustment seat is movably connected to the tray mechanism, the first roller seat is arranged on the first adjustment seat, and the first roller group is arranged on the first roller seat and rollingly cooperates with the guide seat and the guide rail; The second guide assembly includes a second adjustment seat, a second roller seat and a second roller group. The second adjustment seat is movably connected to the tray mechanism. The second roller seat is arranged on the second adjustment seat. The second roller group is arranged on the second roller seat and rolls with the guide seat and the guide rail; wherein the first roller group and the second roller group are used to constrain the freedom of the tray mechanism along the first direction and / or the third direction of the lifting device.

9. The lifting device according to claim 7, characterized in that: The first column mechanism and the second column mechanism also include an upper limit member, a lower limit member and a counterweight protection unit. The upper limit member is arranged at the top end of the column body, and the lower limit member is arranged at the bottom end of the column body. The column body is provided with a hollow hole, and the counterweight protection unit is arranged in the hollow hole.

10. The lifting device according to claim 7, characterized in that: The lifting device further comprises a height detection component, which is connected to the tray mechanism and the column body to detect the lifting height of the tray mechanism.

11. The lifting device according to claim 10, characterized in that: The height detection assembly includes a mounting rod, a grating ruler and a photoelectric detection device. The mounting rod is arranged on the column body, the grating ruler is installed on the mounting rod, and the photoelectric detection device is installed on the tray body. The photoelectric detection device is movably installed and cooperated with the grating ruler.

12. The lifting device according to claim 1, wherein: The lifting device further includes an anti-burst mechanism. The first column mechanism and the second column mechanism cooperate to form a working cavity. The anti-burst mechanism is arranged outside an opening of the working cavity along the third direction of the lifting device.

13. The lifting device according to claim 1, wherein: The lifting device further includes a lubricator, which is arranged on the supporting beam mechanism.

14. A conveying system, characterized in that: The lifting device comprises the lifting device according to any one of claims 1 to 13.

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