A transport kit

Abstract

The application discloses a kind of transport toolings. Transport toolings include bracket assembly, at least one lifting assembly, transmission assembly and operating component. Bracket assembly is used to support article;Lifting assembly includes two lifting arms articulatedly connected in X around horizontally extending rotation axis, the upper end of lifting arm is connected to bracket assembly, the lower end of lifting arm is used to contact ground;Transmission assembly is connected to lifting assembly;Operating component is used for user operation, and operating component is connected to transmission assembly. Transport tooling is configured as, when user operates operating component, the included angle between two lifting arms changes, so that the height position of bracket assembly changes. According to the transport work of the application, the height changing method of carrying platform is simple to operate.

Description

Technical Field

[0001] This application relates to the field of transportation equipment technology, and more specifically to a transportation tooling. Background Technology

[0002] Existing hand-pushed transport vehicles have cumbersome lifting and lowering operations for their loading platforms. Therefore, a transport fixture is needed to at least partially solve the above problems. Utility Model Content

[0003] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0004] To at least partially solve the above problems, this application provides a transport tooling, which includes: Bracket assembly, used to support items; At least one lifting assembly, the lifting assembly comprising two lifting arms that are X-shapedly hinged together about a horizontally extending axis of rotation, the upper ends of the lifting arms being connected to the bracket assembly, and the lower ends of the lifting arms being used to contact the ground; A transmission assembly, which is connected to the lifting assembly; and An operating component, for user operation, is connected to the transmission assembly. The transport fixture is designed such that when the user operates the operating component, the included angle between the two lifting arms changes, thereby changing the height position of the bracket assembly.

[0005] Therefore, the bracket assembly is equivalent to a support platform for carrying items. The lifting assembly is constructed as a lifting scissor mechanism; changing the angle between the two lifting arms changes the height of the support platform. The user only needs to operate the control component to change the angle between the two lifting arms, making operation simple.

[0006] Optionally, the transmission assembly includes a lead screw and a lead screw nut that cooperates with the lead screw, the lead screw being perpendicular to the rotation axis, the lead screw nut being connected to the upper end of one of the lifting arms, and the upper end of the other lifting arm being rotatably connected to the bracket assembly. The operating component is a handwheel or crank, which is coaxially connected to the lead screw.

[0007] Therefore, the operating components are simple to use. The user rotates the operating components clockwise or counterclockwise, causing the lead screw to rotate in the forward or reverse direction, thereby moving the lead screw nut along the lead screw and changing the angle between the two lifting arms.

[0008] Optionally, the transport fixture includes two lifting components spaced apart in the horizontal direction. The transport fixture also includes a movable rod, which is parallel to the rotation axis, and its two ends are respectively connected to the upper end of a lifting arm of the lifting assembly. The lead screw nut is mounted on the moving rod.

[0009] Therefore, the two lifting components can better support the platform. The movable rod can connect the lead screw nut to both lifting components simultaneously, resulting in a compact transport fixture structure.

[0010] Optionally, the bracket assembly is provided with a guide groove extending in a direction parallel to the extension direction of the lead screw, and the end of the moving rod is connected to the guide groove.

[0011] Therefore, the guide groove guides the movement direction of the moving bar, enabling the lifting assembly to work stably.

[0012] Optionally, the transport fixture further includes two connecting assemblies, each of which connects one end of the moving rod to the upper end of the corresponding lifting arm. The connecting assembly includes a connecting pin that extends parallel to the rotation axis. One end of the connecting pin is connected to the end of the moving rod, and the other end is connected to the guide groove. The middle portion of the connecting pin extends through the upper end of the lifting arm that is connected to the end of the moving rod.

[0013] Therefore, the upper end of the moving rod and the lifting arm connected to it is connected to the guide groove via a connecting pin. As the connecting pin moves within the guide groove, the guide groove guides the movement of the upper end of the lifting arm. Simultaneously, the lifting arm can rotate around the connecting pin, allowing its upper end to be rotatably connected to the bracket assembly. This application's technical solution achieves stable operation of the lifting assembly using a simple structure.

[0014] Optionally, the connection component further includes: A bushing is disposed in the upper end of the lifting arm corresponding to the end of the moving rod, the axial direction of the bushing is parallel to the rotation axis, and the connecting pin passes through the bushing; and / or A pulley is disposed in the guide groove and is rotatable in the guide groove, and the other end of the connecting pin is coaxially connected to the pulley.

[0015] Therefore, bushings and pulleys can reduce friction on the connecting pins, thus saving users effort.

[0016] Optionally, the two lifting assemblies are spaced apart in the left-right direction of the transport fixture; and / or The lead screw is mounted on the bracket assembly.

[0017] Therefore, the lead screw can be positioned in the middle of the left-right direction of the transport fixture, and correspondingly, the operating components are also positioned in the middle of the left-right direction of the transport fixture, facilitating user operation. The lead screw is mounted on the bracket assembly, allowing the lead screw and lead screw nut to move up and down with the lifting arm in a simple manner, resulting in a compact transport fixture structure.

[0018] Optionally, the lead screw extends in a horizontal direction; and / or A connecting beam connects the corresponding lifting arms of the two lifting assemblies.

[0019] Therefore, the operating components can be connected to the end of the lead screw for easy user operation. The connecting beam increases the strength of the lifting assembly and helps to synchronize the operation of the two lifting assemblies.

[0020] Optionally, the lower end of the lifting arm is provided with rollers; and / or The bracket assembly is constructed as a hollow frame structure and is provided with mounting positions for fixing satellites.

[0021] Therefore, when the included angle between the two lifting arms changes, the distance between the lower ends of the two lifting arms changes, and the rollers can reduce frictional resistance during movement, making it easier for the user. The bracket assembly is particularly suitable for transporting satellites.

[0022] Optionally, the bracket assembly is provided with a first wheel.

[0023] Therefore, when the bracket assembly does not need to be lifted, the first wheel of the bracket assembly contacts the ground, and the transport tooling can be used as a transport vehicle.

[0024] Optionally, the bracket assembly includes: A bracket for contacting the item, the upper end of the lifting arm being connected to the bracket; A base frame, located below the bracket, is provided with the first wheel; and A shock-absorbing component is connected between the bracket and the base frame.

[0025] Therefore, the bracket assembly has a shock absorption function.

[0026] Optionally, the transport fixture further includes a second wheel, the height of which is adjustable, or the installation position of the second wheel can be adjusted according to the height of the bracket assembly, so that the height of the second wheel is different from that of the first wheel.

[0027] Therefore, the second wheel makes it easier for the transport equipment to cross obstacles, such as going up and down stairs.

[0028] Optionally, the transport tooling further includes: A lifting rod, movable vertically relative to the bracket assembly, and a second wheel disposed on the lifting rod. A locking component is provided to prevent the lifting rod from moving relative to the bracket assembly.

[0029] This allows for easy adjustment of the height of the second wheel.

[0030] Optionally, the transport fixture further includes a guide rail extending in the vertical direction, and the lifting rod is connected to the guide rail and movable along the guide rail.

[0031] This allows for stable up-and-down movement of the second wheel.

[0032] Optionally, the first wheel and the second wheel are spaced apart along the front-rear direction of the transport tool, and at least one of the first wheels is located in front of the lower end of the lifting arm.

[0033] Therefore, the lifting assembly does not hinder the coordinated operation of the first and second wheels.

[0034] Optionally, the second wheel is detachably connected to the bracket assembly.

[0035] Therefore, the height of the second wheel can be adjusted when installing it. Attached Figure Description

[0036] The following drawings, which are incorporated herein by reference and used to understand this application, illustrate embodiments of the application and their descriptions, thereby explaining the principles of the application.

[0037] In the attached image: Figure 1 This is a perspective view of a transport fixture according to a specific embodiment of this application, wherein the bracket is in a raised position; Figure 2 This is a perspective view of a transport fixture according to a specific embodiment of the present application, wherein the bracket is in a lowered position; Figure 3 This is a top view schematic diagram of a transport fixture according to a specific embodiment of this application; Figure 4 For the transport tooling according to the specific embodiments of this application along Figure 3 Schematic diagram of the cross section along line AA; Figure 5 For the transport tooling according to the specific embodiments of this application along Figure 3 Schematic diagram of the cross section of the middle BB line; Figure 6This is yet another perspective view of the transport tooling according to a specific embodiment of this application; Figures 7 to 14 This is a schematic diagram illustrating the process of a transport tool climbing steps according to a specific embodiment of this application.

[0038] Explanation of reference numerals in the attached figures: 10: Bracket assembly 11: Bracket 12: Base frame 13: Vibration damping components 14: The First Wheel 15: Installation position 16: Guide groove 17: Mounting holes 20: Handlebar assembly 21: Handlebars 22: Guide rail 30: Lifting assembly 31: Lifting arm 32: First lifting arm 33: Second lifting arm 34: Connecting beam 35: Shaft 36: Roller 40: Transmission components 41: Lead screw 42: Lead screw nut 43: Moving lever 44: Pin 50: Connecting components 51: Connecting pin 52: Bushing 53: Pulley 61: Operating components 62: The second wheel 63: Lifting bar 100: Transportation tooling Detailed Implementation

[0039] The following description provides numerous specific details to offer a more thorough understanding of this application. However, it will be apparent to those skilled in the art that this application can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described to avoid confusion with this application.

[0040] To fully understand this application, a detailed description will be provided below. It is obvious that the implementation of embodiments of this application is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this application are described in detail below; however, other embodiments may also be available in addition to these detailed descriptions.

[0041] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0042] In understanding the scope of this application, the term "comprising" and its derivatives, as used herein, are intended to be open-ended terms that specify the presence of a described feature, element, component, group, whole, and / or step, but do not exclude the presence of other undescribed features, elements, components, groups, wholes, and / or steps. This concept also applies to words with similar meanings, such as the terms "comprising," "having," and their derivatives.

[0043] The term "attached" or "joined" as used herein includes: a construction in which one element is directly fixed to another element by fixing it directly to another element; a construction in which one element is indirectly fixed to another element by fixing it to an intermediate member, which in turn is fixed to another element; and a construction in which one element is integral with another element, that is, one element is substantially part of another element. This definition also applies to words with similar meanings, such as "connect," "joint," "couple," "install," "adhere," "fix," and their derivatives. Finally, degree terms such as "substantially," "approximately," and "approximately" as used herein indicate the amount of deviation from which modifications to the terminology do not significantly alter the final result.

[0044] Ordinal numbers such as “first” and “second” used in this application are merely identifiers and have no other meaning, such as a specific order. Moreover, for example, the term “first component” does not imply the existence of a “second component”, and the term “second component” does not imply the existence of a “first component”.

[0045] It should be noted that the terms “up,” “down,” “front,” “back,” “left,” “right,” “inner,” “outer,” and similar expressions used in this article are for illustrative purposes only and are not intended to be restrictive.

[0046] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.

[0047] Unless otherwise stated, the numerical ranges in this document include not only the entire range within its two endpoints, but also the subranges contained therein.

[0048] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art.

[0049] This application provides a transport tool, which can also be called a hand-pushed transport vehicle.

[0050] like Figure 1 and Figure 2 As shown, in a specific embodiment, the transport fixture 100 includes a bracket assembly 10, at least one lifting assembly 30, a transmission assembly 40, and an operating component 61. The bracket assembly 10 acts as a support platform for supporting the items to be transported. The lifting assembly 30 is connected to the bracket assembly 10. The lifting assembly 30 is configured to move up and down, thereby driving the bracket assembly 10 to move up and down, realizing the lifting and lowering of the support platform. The transmission assembly 40 is connected to the lifting assembly 30. The operating component 61 is for user operation. One end of the transmission assembly 40 is connected to the operating component 61, and the other end is connected to the lifting assembly 30. When the user operates the operating component 61, the transmission assembly 40 transmits the user's force to the lifting assembly 30, causing the lifting assembly 30 to move and realize the lifting and lowering of the support platform. Therefore, the lifting and lowering operation of the transport fixture 100 only requires the user to operate the operating component 61, making the operation simple.

[0051] Specifically, the lifting assembly 30 is constructed as a lifting scissor mechanism. The lifting assembly 30 includes two lifting arms 31 (first lifting arm 32 and second lifting arm 33) connected in an X-shape around a horizontally extending rotation axis PA. The upper ends of the lifting arms 31 are rotatably connected to the bracket assembly 10. The lower ends of the lifting arms 31 are for contact with the ground. A pivot 35 passes through both lifting arms 31, allowing the two lifting arms 31 to rotate around the pivot 35. The axis of the pivot 35 is the rotation axis PA. The connection between the two lifting arms 31 is similar to that of scissors. The lifting arms 31 rotate in a vertical plane. When the user operates the operating component 61, the angle between the two lifting arms 31 changes, causing a change in the height difference between the two ends of the lifting arms 31, thereby changing the height position of the bracket assembly 10.

[0052] Understandably, the first lifting arm 32 and the second lifting arm 33 are of equal length, the distance between the rotating shaft 35 and the upper end of the two lifting arms 31 is equal, and the distance between the rotating shaft 35 and the lower end of the two lifting arms 31 is also equal, so that the bracket assembly 10 can be parallel to the ground during the lifting process.

[0053] In normal use, the scissor mechanism of the lifting assembly 30 retracts, lowering the height of the bracket assembly 10 to its lowest point. A first wheel 14 is mounted on the bottom of the bracket assembly 10, and the first wheel 14 contacts the ground, allowing the transport fixture 100 to be used as a transport vehicle. The first wheel 14 is, for example, a caster wheel. For ease of pushing, the transport fixture 100 also includes a handlebar assembly 20. The handlebar assembly 20 includes a handlebar 21 for manual control. The handlebar assembly 20 is, for example, located on one side of the bracket assembly 10.

[0054] In this application, the side of the transport fixture 100 where the handlebar assembly 20 is located is the rear side, and the side opposite to the rear side is the front side. When the user pushes the transport fixture 100 forward from the rear side, the user's left side is the left side of the transport fixture 100, and the user's right side is the right side of the transport fixture 100.

[0055] To ensure the smooth operation of the transport vehicle, the transport fixture 100 is equipped with multiple first wheels 14. For example, first wheels 14 are installed at four positions: left front, right front, left rear, and right rear of the bracket assembly 10.

[0056] The carrier assembly 10 includes, for example, a carrier 11, a base frame 12, and a shock-absorbing component 13. The carrier 11 is used to contact the items to be transported. The upper end of the lifting arm 31 is connected to the carrier 11. The base frame 12 is located below the carrier 11. The first wheel 14 is mounted on the base frame 12. The shock-absorbing component 13 is connected between the carrier 11 and the base frame 12. The shock-absorbing component 13 uses an elastic damping material, such as a steel wire spring, thus providing shock absorption for the transport vehicle and protecting the carried items.

[0057] Optionally, the bracket assembly 10 is constructed as a hollow frame structure, and the lifting assembly 30 is installed inside the frame. When the scissors of the lifting assembly 30 are fully retracted, the lower end of the lifting arm 31 is raised off the ground (see...). Figure 2 In this way, the transport fixture 100 can have a large platform, and the lifting assembly 30 can be protected by the bracket assembly 10. For example, both the bracket 11 and the base frame 12 are constructed as polygonal frames. The upper end of the lifting arm 31 is connected to the inner side of the frame beam of the bracket 11. The handlebar assembly 20 is mounted on the rear side of the bracket 11. The bracket 11 and the base frame 12 have substantially the same width in the left-right direction. The length of the base frame 12 in the front-rear direction is less than that of the bracket 11. This ensures that the base frame 12 does not interfere with the user's push-out, protects the first wheel 14, saves material on the base frame 12, and reduces the size of the transport vehicle.

[0058] like Figures 1 to 5 As shown, the transmission assembly 40 includes, for example, a lead screw 41 and a lead screw nut 42 that mates with the lead screw 41. The lead screw 41 extends perpendicular to the rotation axis PA. The lead screw nut 42 is connected to the upper end of the first lifting arm 32. The upper end of the second lifting arm 33 is rotatably connected to the bracket assembly 10 (specifically, bracket 11) about an additional rotation axis APA, wherein the additional rotation axis APA is parallel to the rotation axis PA. The operating component 61 is configured, for example, as a handwheel or crank, which is coaxially connected to the lead screw 41.

[0059] Specifically, the lead screw 41 extends horizontally, for example. Both ends of the lead screw 41 are connected to two opposing frame beams of the bracket 11. An operating component 61 is located at one end of the lead screw 41. A pin 44 is provided at the other end of the lead screw 41, which is configured to rotate only and not move axially, thus allowing the lead screw 41 to rotate only and not move axially. When the user rotates the operating component 61, the lead screw 41 rotates synchronously. The lead screw nut 42 cannot rotate under the action of the limiting component, but can only move linearly along the lead screw 41 under the action of the thread, thereby driving the upper end of the first lifting arm 32 to move linearly. The operating component 61 can rotate in both directions, thus allowing the lead screw 41 to rotate in both directions and the lead screw nut 42 to move in both directions. Since the lead screw 41 is perpendicular to the rotation axis PA, the upper end of the first lifting arm 32 moves perpendicular to the rotation axis PA, while the position of the upper end of the second lifting arm 33 remains relatively fixed. This changes the angle between the first lifting arm 32 and the second lifting arm 33, thereby achieving the lifting function.

[0060] Understandably, the lead screw nut 42 moves up and down synchronously with the upper end of the first lifting arm 32, so the lead screw 41 also needs to move up and down. Setting the lead screw 41 on the bracket assembly 10 solves the problem of the lead screw 41, lead screw nut 42 and the upper end of the first lifting arm 32 moving up and down synchronously.

[0061] Understandably, the lead screw 41 can be tilted horizontally or perpendicular to the horizontal direction. For ease of operation, the lead screw 41 extends in the front-to-back direction, and the operating component 61 is located at the rear end of the lead screw 41, so that the user can easily access the operating component 61 when pushing the cart. Accordingly, the rotation axis PA and the auxiliary rotation axis APA extend in the left-to-right direction.

[0062] To achieve smooth lifting, the transport fixture 100 includes two lifting components 30, spaced horizontally, for example, spaced left to right. To enable the transmission component 40 to simultaneously drive the two lifting components 30, the transmission component 40 also includes a moving rod 43. The moving rod 43 is parallel to the rotation axis PA, and its two ends are respectively connected to the upper ends of the first lifting arms 32 of one of the lifting components 30. The moving rod 43 is, for example, sandwiched between the two first lifting arms 32. A lead screw nut 42 is disposed on the moving rod 43. Thus, the moving rod 43 moves synchronously with the lead screw nut 42, synchronously transmitting the power of the nut 42 to the two first lifting arms 32. The moving rod 43 also prevents the nut 42 from rotating. The nut 42 is, for example, roughly located at the center of the moving rod 43, and the lead screw 41 is located between the two lifting components 30, that is, in the middle of the left-right direction of the transport fixture 100, thus giving the transport fixture 100 a generally symmetrical structure.

[0063] As the lead screw nut 42 moves along the lead screw 41, the upper end of the first lifting arm 32 moves parallel to the lead screw 41. To stabilize the movement of the upper end of the first lifting arm 32, the bracket assembly 10 has a guide groove 16 extending in a direction parallel to the extension direction of the lead screw 41. The end of the moving rod 43 is connected to the guide groove 16 and can move along the guide groove 16 to move under the guidance of the guide groove 16. Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, the guide groove 16 is located on the inner side of the frame beam of the bracket 11. The opening of the guide groove 16 faces the interior of the bracket 11, that is, towards the moving rod 43.

[0064] like Figure 4 As shown, the transport fixture 100 also includes two connecting assemblies 50, each connecting assembly 50 for connecting one end of the moving rod 43 to the upper end of the corresponding first lifting arm 32. The connecting assembly 50 includes, for example, a connecting pin 51. The connecting pin 51 extends parallel to the rotation axis PA. The inner end of the connecting pin 51 is connected to the end of the moving rod 43, the outer end is connected to the guide groove 16 and can move along the guide groove 16, and its middle portion passes through the upper end of the first lifting arm 32 corresponding to the end of the moving rod 43. The connecting pin 51 can move along the guide groove 16, thereby moving under the guidance of the guide groove 16, causing the upper ends of the moving rod 43 and the first lifting arm 32 to also move under the guidance of the guide groove 16.

[0065] Understandably, during the opening and closing of the lifting scissor mechanism, the upper end of the first lifting arm 32 needs to rotate relative to the bracket assembly 10 around the auxiliary rotation axis SPA, which is parallel to the rotation axis PA. In this application's technical solution, the upper end of the first lifting arm 32 is rotatable around the connecting pin 51, thus the connecting pin 51 simultaneously solves the problems of rotation and guidance. Optionally, the connecting assembly 50 also includes a bushing 52. The bushing 52 is disposed in the upper end of the first lifting arm 32. The axial direction of the bushing 52 is parallel to the rotation axis PA, and the connecting pin 51 passes through the bushing 52. This can reduce rotational friction.

[0066] Optionally, the connecting assembly 50 also includes a pulley 53. The pulley 53 is disposed in the guide groove 16 and is rotatable within the guide groove 16. The axis of rotation of the pulley 53 is parallel to the axis of rotation PA. The outer end of the connecting pin 51 is coaxially connected to the pulley 53. Thus, the linear movement of the connecting pin 51 along the guide groove 16 can be converted into the rolling of the pulley 53 in the guide groove 16, which can also reduce frictional resistance.

[0067] To improve the strength and synchronization of the movement of the two lifting components 30, a connecting beam 34 is provided between the corresponding lifting arms 31 of the two lifting components 30. The connecting beam 34 extends, for example, parallel to the rotation axis PA. For example, a connecting beam 34 is provided between the lower ends of the two second lifting arms 33. Of course, the transport fixture 100 can be provided with multiple connecting beams 34. The moving rod 43, sandwiched between the two first lifting arms 32, can also serve as a connecting beam.

[0068] When the scissor mechanism of the lifting assembly 30 opens to a certain extent, the lower end of the lifting arm 31 contacts the ground, causing the bracket assembly 10 to be lifted (see...). Figure 1 Understandably, during the scissor opening and closing process of the lifting assembly 30, the distance between the lower ends of the two lifting arms 31 changes. To reduce the friction between the lower ends of the lifting arms 31 and the ground when they move, rollers 36 are provided at the lower ends of the lifting arms 31, with the rotation axis of the rollers 36 parallel to the rotation axis PA. Understandably, when the lifting assembly 30 is providing support, the rollers 36 can temporarily function as wheels.

[0069] In this application, both the bracket assembly 10 and the lifting assembly 30 are constructed as hollow frame structures. This results in the transport fixture 100 having a chassis that is essentially just a frame, making the bracket assembly 10 suitable for transporting objects with convex, spherical surfaces, such as satellites. Optionally, the bracket 11 is provided with multiple mounting positions 15 for securing the satellite. The mounting positions 15, for example, have multiple mounting holes 17 for connecting to clamps on the satellite. Therefore, the transport fixture 100 can be specifically designed for transporting satellites.

[0070] Of course, a flat panel can also be laid on the bracket 11 to support items with a flat surface, so that the transport fixture 100 can be used as a regular handcart.

[0071] When transporting goods, it is often difficult to avoid overcoming ground obstacles, such as stairs. In order to enable the transport tool 100 to easily overcome ground obstacles, the transport tool 100 also includes a second wheel 62. The height of the second wheel 62 is adjustable, or the installation position of the second wheel 62 can be adjusted according to the height of the bracket assembly 10, so that the height of the second wheel 62 is different from that of the first wheel 14.

[0072] For example, the second wheel 62 is connected to the bracket assembly 10 and is movable vertically relative to the bracket assembly 10. For example, the transport fixture 100 includes a lifting rod 63 and a locking assembly (not shown). The lifting rod 63 is disposed on the bracket assembly 10 and is movable vertically relative to the bracket assembly 10, with the second wheel 62 disposed at the bottom of the lifting rod 63. The locking assembly is used to prevent the lifting rod 63 from moving relative to the bracket assembly 10. Thus, when the locking assembly is unlocked, the lifting rod 63 can move vertically, changing the height position of the second wheel 62; when the locking assembly is locked, the lifting rod 63 is immovable, and the position of the second wheel 62 cannot be changed.

[0073] For example, the bracket assembly 10 is provided with a guide rail extending in the vertical direction, and the lifting rod 63 is connected to and can move along the guide rail. In the illustrated example, the handlebar assembly 20 includes a hollow vertical tube 22 supporting the handlebar 21, and the lifting rod 63 is fitted inside the vertical tube 22, so that the vertical tube 22 becomes a guide rail for guiding the vertical movement of the lifting rod 63. A locking component is provided, for example, on the wall of the vertical tube 22, and is configured as a screw-on pin. When screwed in the forward direction, the pin extends into the vertical tube 22 in the radial direction, pressing the lifting rod 63 to achieve locking; when screwed in the reverse direction, the pin withdraws from the vertical tube 22 in the radial direction, releasing the lifting rod 63 to achieve unlocking. When the second wheel 62 is not needed, the lifting rod 63 can be locked in the uppermost extreme position, that is, it can be stored.

[0074] Of course, the raising and lowering and locking of the lifting rod 63 can also be achieved in other ways. Alternatively, the second wheel 62 can be detachably connected to the bracket assembly 10, removed when not in use, and installed at a suitable height when in use. In this example, the lifting rod 63 can be used as a mounting component for the second wheel 62. In the illustrated example, the transport fixture 100 includes two symmetrically arranged second wheels 62. Of course, it is also possible to have only one second wheel 62 at the axis of symmetry of the transport fixture 100. The second wheel 62 can be configured as a caster wheel.

[0075] The following combination Figures 7 to 14 Instructions on how to use the second wheel 62.

[0076] like Figure 7 As shown, when an obstacle OB (such as an upward step) appears in front of the transport fixture 100, the user operates the operating component 61 to raise the bracket assembly 10, so that at least one first wheel 14 (the first wheel 14 located at the front in the figure) can rest against the obstacle OB, i.e., contact the ground at the obstacle OB. At this time, the lifting assembly 30 performs a support function. Then, the user installs the second wheel 62, or releases the second wheel 62, so that the second wheel 62 contacts the ground where there is no obstacle. Thus, the first wheel 14 and the second wheel 62 are at different heights.

[0077] like Figure 8 As shown, with the first wheel 14 and the second wheel 62 providing support, the user operates the control component 61 in the opposite direction to retract the lifting scissors, ensuring that the lower end of the lifting assembly 30 does not extend below the first wheel 14. Then, as... Figure 9 As shown, the first wheel 14 and the second wheel 62, which provide support, push the transport fixture 100 forward until all the first wheels 14 contact the ground at the obstacle OB, thus essentially achieving the climbing of the bracket assembly 10 and the lifting assembly 30 onto the obstacle OB. Finally, as... Figure 10 As shown, if the user removes or stores the second wheel 62, the transport tool 100 can continue to be pushed smoothly over the obstacle OB.

[0078] In this operating mode, the first wheel 14 and the second wheel 62 are spaced apart in the front-rear direction of the transport fixture 100, and at least one first wheel 14 is located in front of the lower end of the lifting arm 31 (for example, at least one first wheel 14 is located in front of the lifting assembly 30). In this way, the first wheel 14, the roller 36 of the lifting assembly 30, and the second wheel 62 are spaced apart in the front-rear direction and will not interfere with each other, so that the three sets of wheels can alternately support the transport fixture 100 according to the above steps.

[0079] When it is necessary to descend a step, the transport fixture 100 can be pulled backward, meaning the rear of the transport fixture 100 should face the downward-sloping ground. For example... Figure 11 As shown, when the second wheel 62 is mounted above the recessed ground, the user installs the second wheel 62 or releases the second wheel 62 so that it contacts the recessed ground. Then, as... Figure 12 As shown, using the support of the second wheel 62 and the first wheel 14, the transport fixture 100 continues to be pulled backward until the lifting assembly 30 (at least all rollers 36) is above the recessed ground (at this point, at least one first wheel 14 is still on the higher step ST). At this time, as... Figure 13As shown, the user unfolds the lifting assembly 30, causing the rollers 36 to contact the recessed ground, thus allowing the lifting assembly 30 to support the transport fixture 100. Using the rollers 36, the user continues to pull the transport fixture 100 backward until it is completely free from the higher step ST. Finally, as... Figure 14 As shown, the user can retract the lifting assembly 30 and remove or store the lowered wheel 62, so that the first wheel 14 can support the transport tool 100 again, and the transport tool 100 can travel normally on the depressed ground.

[0080] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of this application. Features described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0081] This application has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this application to the described embodiments. Furthermore, those skilled in the art will understand that this application is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this application, all of which fall within the scope of protection claimed in this application.

Claims

1. A transport tooling, characterized in that, include: Bracket assembly, used to support items; At least one lifting assembly, the lifting assembly comprising two lifting arms that are X-shapedly hinged together about a horizontally extending axis of rotation, the upper ends of the lifting arms being connected to the bracket assembly, and the lower ends of the lifting arms being used to contact the ground; A transmission assembly connected to the lifting assembly; and An operating component, for user operation, is connected to the transmission assembly. The transport fixture is designed such that when the user operates the operating component, the included angle between the two lifting arms changes, thereby changing the height position of the bracket assembly.

2. The transport tooling according to claim 1, characterized in that, The transmission assembly includes a lead screw and a lead screw nut that cooperates with the lead screw. The lead screw is perpendicular to the rotation axis. The lead screw nut is connected to the upper end of one of the lifting arms, and the upper end of the other lifting arm is rotatably connected to the bracket assembly. The operating component is a handwheel or crank, which is coaxially connected to the lead screw.

3. The transport tooling according to claim 2, characterized in that, The transport fixture includes two lifting components spaced apart in the horizontal direction. The transport fixture also includes a movable rod, which is parallel to the rotation axis, and its two ends are respectively connected to the upper end of a lifting arm of the lifting assembly. The lead screw nut is mounted on the moving rod.

4. The transport tooling according to claim 3, characterized in that, The bracket assembly is provided with a guide groove extending in a direction parallel to the extension direction of the lead screw, and the end of the moving rod is connected to the guide groove.

5. The transport fixture according to claim 4, characterized in that, The transport fixture also includes two connecting components, each of which connects one end of the moving rod to the upper end of the corresponding lifting arm. The connecting assembly includes a connecting pin that extends parallel to the rotation axis. One end of the connecting pin is connected to the end of the moving rod, and the other end is connected to the guide groove. The middle portion of the connecting pin extends through the upper end of the lifting arm, which is connected to the end of the moving rod.

6. The transport tooling according to claim 5, characterized in that, The connection component also includes: A bushing is disposed in the upper end of the lifting arm corresponding to the end of the moving rod, the axial direction of the bushing is parallel to the rotation axis, and the connecting pin passes through the bushing; and / or A pulley is disposed in the guide groove and is rotatable in the guide groove, and the other end of the connecting pin is coaxially connected to the pulley.

7. The transport tooling according to claim 3, characterized in that, The two lifting assemblies are spaced apart along the left-right direction of the transport fixture; and / or The lead screw is mounted on the bracket assembly.

8. The transport tooling according to claim 2, characterized in that, The lead screw extends horizontally; and / or A connecting beam connects the corresponding lifting arms of the two lifting assemblies.

9. The transport fixture according to claim 1, characterized in that, The lower end of the lifting arm is provided with rollers; and / or The bracket assembly is constructed as a hollow frame structure and is provided with mounting positions for fixing satellites.

10. The transport tooling according to any one of claims 1 to 9, characterized in that, The bracket assembly is equipped with a first wheel.

11. The transport tooling according to claim 10, characterized in that, The bracket assembly includes: A bracket for contacting the item, the upper end of the lifting arm being connected to the bracket; A base frame, located below the bracket, is provided with the first wheel; and A shock-absorbing component is connected between the bracket and the base frame.

12. The transport tooling according to claim 10, characterized in that, The transport fixture also includes a second wheel, the height of which is adjustable, or the installation position of the second wheel can be adjusted according to the height of the bracket assembly, so that the height of the second wheel is different from that of the first wheel.

13. The transport tooling according to claim 12, characterized in that, The transport tooling also includes: A lifting rod, movable vertically relative to the bracket assembly, and a second wheel disposed on the lifting rod. A locking component is provided to prevent the lifting rod from moving relative to the bracket assembly.

14. The transport tooling according to claim 13, characterized in that, The transport fixture also includes a guide rail extending in the vertical direction, and the lifting rod is connected to the guide rail and can move along the guide rail.

15. The transport tooling according to claim 12, characterized in that, The first wheel and the second wheel are spaced apart along the front-rear direction of the transport fixture, and at least one of the first wheels is located in front of the lower end of the lifting arm; and / or The second wheel is detachably connected to the bracket assembly.

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