A handling tool
Patent Information
- Application Number
- CN202510185625.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2026-08-21
AI Technical Summary
但是，使用笼车过程中，脚轮高度影响车辆装载率，而且脚轮固定困难，意外位移容易造成笼车内的货物受损，甚至笼车自身及其所在车厢或附近物体损坏
[0028]从上述技术方案可以看出，本申请提供的搬运工具中，只需转动连接件即可控制脚轮由收纳状态(即第一状态)调整至工作状态(即第二状态)，或由工作状态调整至收纳状态，无需设置动力装置，不仅结构简单、操作方便、采购成本较低，而且重量较轻、体积较小，能够钻入底部空间高度狭小、支腿代替脚轮的站脚型笼车(空车或满载)底部，将其顶升，并提供移动功能。此外，由于该搬运工具能够适用于无脚轮的站脚型笼车，从而使笼车节省了脚轮采购和维护方面的费用，而且能够避免脚轮固定困难、意外位移导致的潜在隐患。
Smart Images
Figure CN122607403A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of logistics and transportation technology, and in particular to a handling tool. Background Technology
[0002] A cage cart is a handcart or transport vehicle with a fence or mesh structure, used for the safe handling and storage of various types of goods. Typically, cage carts are equipped with casters at the bottom for easy movement. However, during the use of cage carts, the height of the casters affects the vehicle's loading capacity, and the casters are difficult to secure. Accidental displacement can easily damage the goods inside the cage cart, or even damage the cage cart itself, its compartment, or nearby objects. Summary of the Invention
[0003] In view of this, the purpose of this application is to provide a handling tool that enables cage carts to be moved with the assistance of the handling tool without the removal of casters, thereby avoiding potential hazards caused by difficulties in fixing the casters and accidental displacement of the cage carts.
[0004] To achieve the above objectives, this application provides the following technical solution:
[0005] A transport tool, comprising:
[0006] The base is used to support the target device;
[0007] The connector is hinged to the base via a first connection point;
[0008] A caster is mounted on the first surface of the connector and is at least partially located below the base; the distance r between the central pivot of the caster and the first connection point is greater than zero;
[0009] An operating arm is used to drive the connector to rotate around the first connection position, carrying the caster.
[0010] A locking element is provided on the base or the operating arm;
[0011] When the handling tool is in the first state, the first surface of the connector faces the rear of the base; the distance between the center pivot of the caster and the base is h1;
[0012] When the handling tool is in the second state, the first surface of the connector faces downward; the distance between the center pivot of the caster and the base is h2, h2 > h1; the operating arm is detachably connected to the base through the locking member.
[0013] Optionally, in the above-mentioned handling tool, during the process of the handling tool transitioning from the first state to the second state, the angle by which the connecting member rotates around the first connecting position is any value within the range of 30° to 90°.
[0014] Optionally, in the above-mentioned handling tool, multiple connectors and casters are provided, and each connector is equipped with at least one caster.
[0015] At least one set of the connectors and the casters are located at the front of the handling tool;
[0016] At least one set of the connectors and the casters are located at the rear of the transport tool.
[0017] Optionally, the above-mentioned handling tool also includes a frame, which is located below the base;
[0018] Each of the connectors is hinged to the base via a first connecting position and to the frame via a second connecting position; the distance 'a' between the first connecting position and the second connecting position is greater than zero.
[0019] Optionally, in the above-described handling tool, the operating arm is connected to the connecting member, the operating arm and the caster are located on both sides of the connecting member, and the length direction of the operating arm is perpendicular to the first surface of the connecting member.
[0020] Optionally, in the above-described handling tool, the distance b between the first connecting position and the rear end of the base is greater than zero;
[0021] During the transition of the handling tool from the first state to the second state, the operating arm abuts against the rear end of the base.
[0022] Optionally, in the above-mentioned handling tool, the connector is provided with a connecting part for mounting the operating arm, the connecting part including a sleeve, countersunk hole or cylindrical protrusion that can be inserted into the operating arm.
[0023] Optionally, in the above-mentioned handling tool, the frame is provided with a accommodating space capable of accommodating the connector and the casters.
[0024] Optionally, in the above-described handling tool, when the handling tool is in the second state: the second surface of the connector located on the opposite side of the first surface abuts against the first crossbeam of the base; and / or, the frame is located below the base and abuts against at least a portion of it.
[0025] Optionally, in the above-mentioned handling tool, the rear end of the base is provided with an upwardly protruding baffle.
[0026] Optionally, in the above-mentioned handling tool, a connecting ring is provided at the rear end of the base.
[0027] Optionally, in the above-described handling tool, the casters and the connector are located within the vertical projection area of the base.
[0028] As can be seen from the above technical solution, the handling tool provided in this application only requires rotating the connecting part to control the casters to be adjusted from the storage state (i.e., the first state) to the working state (i.e., the second state), or from the working state to the storage state. No power unit is required. It is not only simple in structure, easy to operate, and has low procurement costs, but also lightweight and compact. It can penetrate the bottom of standing-legged cage carts (empty or fully loaded) with narrow bottom spaces and outriggers instead of casters, lifting them and providing mobility. Furthermore, since this handling tool is applicable to standing-legged cage carts without casters, it saves on caster procurement and maintenance costs and avoids potential hazards caused by difficulties in fixing casters and accidental displacement. Attached Figure Description
[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0030] Figure 1 This is a structural schematic diagram of a novel foot-mounted cage car provided in an embodiment of this application.
[0031] Figure 2 This is a side view of a handling tool provided in an embodiment of this application.
[0032] Figure 3 for Figure 2 A magnified schematic diagram of a local area in the diagram.
[0033] Figure 4 This is a schematic diagram of a connector provided in an embodiment of this application.
[0034] Figure 5 and Figure 6 Axonometric views of a handling tool provided in this application at different angles.
[0035] Figure 7 This is a top view of a handling tool provided in an embodiment of this application.
[0036] in:
[0037] 1-Base, 2-Frame, 3-Connector, 4-Cast, 5-Operating arm, 6-Locking component
[0038] 11-Baffle, 12-Connecting ring,
[0039] 31-First surface, 32-Second surface, 33-Connecting part
[0040] 101 - First longitudinal beam, 102 - First transverse beam, 103 - Second longitudinal beam
[0041] 201 - Third longitudinal beam, 202 - Second transverse beam, 203 - Fourth longitudinal beam
[0042] 301 - First connection bit, 302 - Second connection bit, 303 - Third connection bit
[0043] 501 - First boom, 502 - Second boom, 503 - Handle. Detailed Implementation
[0044] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0045] Please see Figure 1 To avoid the impact of caster height on the cage car's loading capacity and the difficulty in fixing the casters, this application provides a novel cage car structure: a standing-leg type cage car. This cage car eliminates the bottom casters and installs outriggers 01 at the four corners of the cage car's bottom. To achieve a higher loading capacity, the height h of these outriggers 01 is generally small, meaning the bottom space of the cage car is relatively low. Therefore, when the cage car needs to be moved, a transport vehicle capable of lifting and moving it is required, such as a tortoise-shaped car with a lifting device and four swivel wheels. However, traditional tortoise-shaped cars not only have a large body structure, but their lifting devices, such as hydraulic systems or motors, are also costly and bulky, making them unsuitable for the new standing-leg type cage car with its limited bottom space.
[0046] Based on this, embodiments of this application provide a handling tool. Please refer to... Figures 2 to 7The handling tool includes a base 1, a connector 3, casters 4, an operating arm 5, and a locking member 6. The base 1 supports the target device. The connector 3 is hinged to the base 1 via a first connecting point 301. The casters 4 are mounted on the first surface 31 of the connector 3 (i.e., the bottom mounting surface of the connector 3) and are at least partially located below the base 1, allowing the caravan to move via the casters 4 in both the storage and use states. The distance r between the central axis of the casters 4 and the first connecting point 301 is greater than zero. This distance r is also the radius of rotation when the connector 3 rotates around the base 1 with the casters 4, allowing the casters 4 to rotate downwards and extend below the base 1. The operating arm 5 drives the connector 3 to rotate around the first connecting point 301 with the casters 4. The locking member 6 is disposed on the base 1 or the operating arm 5 and is used to lock the operating arm 5 and the base 1.
[0047] Please see Figure 2 and Figure 3 When the handling tool is in the first state, the first surface 31 of the connector 3 faces the rear of the base 1. At this time, both the connector 3 and the casters 4 are in a retracted state. The height distance between the casters 4 and the base 1 is small, and they are at least partially retracted into the frame 2. Assume that the distance between the center pivot of the casters 4 and the base 1 is h1 at this time. When the handling tool is in the second state, the first surface 31 of the connector 3 faces downward, and the casters 4 are located below the connector 3 and are in working condition, capable of rolling along the ground. Assume that the distance between the center pivot of the casters 4 and the base 1 is h2 at this time, then h2 > h1. Furthermore, the operating arm 5 can be locked by the locking member 6, meaning the operating arm 5 is detachably connected to the base 1 via the locking member 6. (See also...) Figure 2 and Figure 3 When the handling tool is in the second state, most or all of each caster 4 is located below the frame 2, which can raise the base 1 and the horizontal height of the load-bearing goods (i.e., the target device, such as an empty cage car or a cage car loaded with goods) above it, thus achieving the purpose of lifting and moving the target device. Generally, during the transition from the first state to the second state, the connecting member 3 rotates around the first connecting position 301 at any angle within the range of 30° to 90°, such as 90°, 80°, 70°, 60°, 45°, etc. It should be noted that the first surface 31 of the connecting member 3 facing the rear of the base 1 specifically means that the first surface 31 of the connecting member 3 is perpendicular to the horizontal plane of the base 1 (i.e., the first surface 31 is a vertical plane); or, as... Figure 2As shown, the first surface 31 of the connector 3 is slightly tilted downwards in a clockwise direction relative to the vertical plane at a certain angle, which is less than 45°. It should be noted that "first surface 31 facing downwards" specifically means that the first surface 31 of the connector 3 is parallel to the horizontal plane of the base 1 (i.e., the first surface 31 is a horizontal plane); or, the first surface 31 of the connector 3 is slightly tilted backwards in a clockwise direction relative to the horizontal plane towards the rear of the base 1 at a certain angle, which is less than 45°, so that the connector 3 and the caster 4 can maintain the second state.
[0048] As can be seen, when using this handling tool, simply rotating the connecting part 3 is enough to adjust the caster 4 from the stored state to the working state, or vice versa. No power unit is required. It is not only simple in structure, easy to operate, and has low procurement costs, but it is also lightweight and compact, allowing it to penetrate deep into various environments. Figure 1 The novel standing-legged cage cart (empty or fully loaded) shown has a narrow bottom space and uses outriggers instead of casters to lift it up and provide mobility. This handling tool is suitable for... Figure 1 The new type of standing cage car shown in the figure saves on the cost of purchasing and maintaining casters, and avoids potential hazards caused by difficulties in fixing casters and accidental displacement.
[0049] In practical implementation, a locking element 6 can be installed at the rear end of the base 1 near the operating arm 5, using one or more combinations of elastic buckles, hooks, straps, and locking pins. For example:
[0050] In some embodiments, an elastic buckle is used as the locking element 6. In this case, the elastic buckle is fixedly installed at the rear end of the base 1. When the handling tool is in the second state and the operating arm 5 is close to or in contact with the rear end of the base 1, the operating arm 5 can be pressed into the elastic buckle, thereby fixing the operating arm 5 to the rear end of the base 1 and preventing the connecting part 3 and the caster 4 from rotating.
[0051] In some embodiments, hooks or straps are used as locking elements 6. In this case, the hooks or straps are fixedly installed at the rear end or left and right sides of the base 1 near the rear end of the base. When the handling tool is in the second state and the operating arm 5 is close to or attached to the rear end of the base 1, the hooks or straps can be fixed on the operating arm 5, thereby fixing the operating arm 5 to the rear end of the base 1 and preventing the connecting part 3 and the caster 4 from rotating.
[0052] In some embodiments, a locking pin is used as the locking element 6. At this time, the operating arm 5 and the base 1 are respectively provided with a first ear plate and a second ear plate. When the handling tool is in the second state, when the operating arm 5 is close to or in contact with the rear end of the base 1, the first ear plate and the second ear plate overlap. The locking pin passes through the through holes on the first ear plate and the second ear plate to fix the operating arm 5 to the rear end of the base 1, so as to prevent the connecting part 3 and the caster 4 from rotating.
[0053] In some embodiments, the locking element 6 can also be provided on the operating arm 5. When the handling tool is in the second state, the operating arm 5 can be fixed to the rear end of the base 1 by the locking element 6, or the operating arm 5 can be fixed to the cage or cargo by the locking element 6.
[0054] However, this is not the only option. In other embodiments, other methods can be used to lock the operating arm 5. This application does not make any specific limitations on this.
[0055] In practical implementation, the operating arm 5 of the aforementioned handling tool is used to drive the connecting piece 3, along with the casters 4, to rotate around the first connecting position 301, thereby changing the handling tool from the first state to the second state. For example, please refer to... Figure 3 and Figure 5 In some embodiments, the operating arm 5 is connected to the connecting member 3, and the operating arm 5 and the caster 4 are located on both sides of the connecting member 3, with the length direction of the operating arm 5 perpendicular to the first surface 31 of the connecting member 3. Since the length of the operating arm 5 is much greater than the distance r between the central pivot of the caster 4 and the first connecting position 301, the torque can be amplified through the lever principle, easily lifting the heavy object on the base 1. At the same time, the height difference between the connecting member 3 and the caster 4 can be used to lift the heavy object.
[0056] However, this is not the only option. In other embodiments, the handling tool itself may not have an operating arm 5. Instead, other rod-like structures can be selected on-site as the operating arm. In this case, only a through hole for inserting the rod-like structure needs to be provided on the connector 3. Alternatively, in other embodiments, a power unit (such as a motor, telescopic cylinder, or hydraulic cylinder) can be provided in the handling tool to drive the connector 3 to rotate, thereby eliminating the need for manual operation and enabling the handling tool to automatically store or lift target devices such as cage carts.
[0057] The following explanation uses a handling tool with an operating arm 5 as an example. Please refer to [link / reference]. Figure 2 and Figure 3 The connector 3 and the base 1 are hinged at the first connection point 301, and the distance b between the first connection point 301 and the rear end of the base 1 is greater than zero. During the process of the handling tool changing from the first state to the second state, the operating arm 5 abuts against the rear end of the base 1. This forms a lever structure. At this time, the rear end of the base 1 is the fulcrum, and the distance between the handle 503 of the operating arm 5 and the fulcrum is much greater than the distance between the contact point of the caster 4 and the fulcrum. Therefore, a relatively small force F can be used to pry up and raise the base 1 and the target device it carries, so that the support legs 01 at the bottom of the cage car are off the ground, making it easier for the cage car to move.
[0058] It should be noted that, generally, when the handling tool is in the second state, the caster 4 is closer to the worker relative to the first connection position 301. At this time, the support point of the caster 4 on the ground is further away from the center of the base 1 relative to the first connection position 301, which helps the caster 4 maintain its working state and prevents it from accidentally rotating back to the storage state. However, this is not a limitation. In other embodiments, the caster 4 can be positioned directly below the first connection position 301, or closer to the center of the base 1 relative to the first connection position 301. In this case, the connector 3 or the operating arm 5 can be locked using other methods.
[0059] In some embodiments, the rear bottom of the handling tool is provided with a connector 3 and a caster 4 on the left and right sides respectively; the operating arm 5 includes a first arm 501 and a second arm 502 arranged in parallel, and a handle 503 located between the first arm 501 and the second arm 502, and the ends of the first arm 501 and the second arm 502 away from the handle 503 are respectively fixedly connected to a connector 3.
[0060] When it is necessary to move heavy objects using the above-mentioned handling tools, taking a cage cart as an example, the operation process mainly includes: laying down the casters 4 in the handling tools, so that the handling tools are in the first state. At this time, the base 1 is lower than the height of the bottom surface of the cage cart. Then, push the handling tools under the bottom surface of the cage cart and place them between the support legs 01.
[0061] Raise the handle 503 of the operating arm 5 to lift the caster 4 through leverage, that is, switch the handling tool from the first state to the second state, switch the caster 4 from the storage state to the working state, and turn the caster 4 out, thereby lifting the base 1 and the cage car it supports, and the support legs 01 of the cage car leave the ground.
[0062] Locking the operating arm 5, for example by hanging the operating arm 5 on the side wall of the cage car, can prevent the cage car from falling during transportation. The locking process of the operating arm 5 can be achieved by a lever structure consisting of the operating arm 5, the connecting piece 3, the caster 4 and the base 1, or by setting a structure (such as an elastic buckle or hook) on the base 1 and / or the connecting piece 3 that can be detachably connected to the operating arm 5.
[0063] Please see Figure 4In some embodiments, the bottom of the handling tool is provided with multiple connectors 3 and multiple casters 4, and each connector 3 is equipped with at least one caster 4. At least one set of connectors 3 and casters 4 is located at the front of the handling tool; at least one set of connectors 3 and casters 4 is located at the rear of the handling tool. For example, in some embodiments, four or more sets of casters 4 are provided circumferentially at the bottom of the handling tool. Alternatively, in other embodiments, three sets of casters 4 may be provided at the bottom of the handling tool. In this case, only one set of casters 4 is provided at the front of the handling tool, and a set of casters 4 is provided on each side of the longitudinal center line at the rear; or, only one set of casters 4 is provided at the rear of the handling tool, and a set of casters 4 is provided on each side of the longitudinal center line at the front. Alternatively, in other embodiments, a set of casters 4 can be provided at the front and rear of the handling tool, respectively. In this case, multiple casters 4 at the front of the handling tool can be arranged coaxially side by side. If the axial width of the casters 4 is large, similar to the structure of a roller, then only one caster 4 can be provided. Similarly, multiple casters 4 at the rear of the handling tool can be arranged coaxially side by side. If the axial width of the casters 4 is large, similar to the structure of a roller, then only one caster 4 can be provided. It should be noted that each set of casters 4 may include only one caster 4, or two or more casters 4 may be arranged coaxially side by side.
[0064] Please see Figure 2 , Figure 5 and Figure 6 In some embodiments, the aforementioned handling tool also includes a frame 2, located below the base 1, and equipped with a space to accommodate the connectors 3 and casters 4. The connectors 3 are respectively hinged to the base 1 via a first connection point 301 and to the frame 2 via a second connection point 302, with the distance 'a' between the first and second connection points 301 being greater than zero. Thus, the frame 2 can control the synchronous movement of the connectors 3 and casters 4. At this point, the base 1, frame 2, and the two connectors 3 constitute a [missing information - likely a specific structure or feature]. Figure 2 The parallelogram j shown in the figure, through the unstable characteristics of the parallelogram j, allows the connector 3 to rotate relative to the base 1 with the casters 4, and makes the distance between the frame 2 and the base 1 adjustable, so that the base 1 can enter the narrow space at the bottom of the cage car, and the base 1 can be raised by rotating the connector 3, and the cage car can be moved by the casters 4.
[0065] In some embodiments, the connector 3 is provided with a connecting portion 33 for mounting the operating arm 5. This connecting portion 33 can be a sleeve, countersunk hole, or cylindrical protrusion that can be inserted into the operating arm 5. Thus, the operating arm 5 can be easily mounted on the connector 3, or even detachably connected, to save space when the handling tool is in the storage state.
[0066] In some embodiments, when the handling tool is in the second state: the second surface 32 of the connector 3 abuts against the first crossbeam 102 of the base 1, the second surface 32 being the top surface of the connector 3, located opposite the first surface 31; and / or, the frame 2 is located below the base 1 and abuts against at least a portion of it. Thus, the base's own structure can limit the connector 3, preventing excessive rotation and ensuring the casters 4 roll normally.
[0067] In some embodiments, the caster 4 and the connector 3 are located within the vertical projection area of the base 1, thereby preventing the caster 4 from protruding beyond the outside of the base 1 and occupying unnecessary space, ensuring that the overall size of the handling tool is small. However, this is not a limitation. In other embodiments, the caster 4 and the connector 3 can also be located on the outside of the base 1, which facilitates the disassembly and maintenance of the caster 4 and the connector 3. This application does not specifically limit this.
[0068] Further, please see Figure 5 and Figure 6 In some embodiments, the rear end of the base 1 is provided with an upwardly protruding baffle 11, which can limit the cage cart and prevent it from sliding backward. In addition, in some embodiments, the rear end of the base 1 is also provided with a connecting ring 12, which facilitates the connection of ropes or hooks to meet the working needs of different scenarios.
[0069] Please see Figure 7 In some embodiments, the base 1 is a frame structure, specifically including a first longitudinal beam 101, a first transverse beam 102, and a second longitudinal beam 103. Specifically: the first longitudinal beam 101 is located on the longitudinal side of the base 1; the first transverse beam 102 is located on the transverse side of the base 1 and is connected to the first longitudinal beam 101; the second longitudinal beam 103 is parallel to the first longitudinal beam 101 and connected to the first transverse beam 102; the upper left and right ends of the connecting member 3 are hinged to the first longitudinal beam 101 and the second longitudinal beam 103, respectively.
[0070] Similarly, the frame 2 is a frame structure, specifically including a third longitudinal beam 201, a fourth longitudinal beam 203, and a second cross beam 202, wherein: the third longitudinal beam 201 is located on the longitudinal side of the frame 2, the fourth longitudinal beam 203 is located inside the third longitudinal beam 201 and parallel to it, and both the third longitudinal beam 201 and the fourth longitudinal beam 203 are connected to the second cross beam 202; the lower left and right ends of the connector 3 are hinged to the third longitudinal beam 201 and the fourth longitudinal beam 203 respectively; the space between the third longitudinal beam 201 and the fourth longitudinal beam 203 is a space that can accommodate the connector 3 and the caster 4.
[0071] It should be noted that the terms left, right, horizontal, and vertical in this application are based on the orientation of the worker holding the handle 503. The vertical side mentioned above specifically refers to the left and right sides of the base 1 located to the left and right of the worker and extending in the front-back direction. The terms front and back in this application are based on the visual direction of the worker holding the handle 503. The horizontal side mentioned above specifically refers to the left and right sides of the base 1 located to the front and back and extending in the left-right direction.
[0072] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed.
[0073] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0074] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A handling tool, characterized in that, include: The base (1) is used to support the target device; The connector (3) is hinged to the base (1) via the first connection position (301); Caster (4) is mounted on the first surface (31) of the connector (3) and is at least partially located below the base (1); the distance r between the central pivot of the caster (4) and the first connection position (301) is greater than zero; Operating arm (5) is used to drive the connector (3) to rotate around the first connection position (301) with the caster (4); A locking element (6) is provided on the base (1) or the operating arm (5); When the handling tool is in the first state, the first surface (31) of the connector (3) faces the rear of the base (1); the distance between the central pivot of the caster (4) and the base (1) is h1; When the handling tool is in the second state, the first surface (31) of the connector (3) faces downward; the distance between the central pivot of the caster (4) and the base (1) is h2, h2 > h1; the operating arm (5) is detachably connected to the base (1) through the locking member (6).
2. The handling tool according to claim 1, characterized in that, The locking element (6) includes any one or a combination of elastic buckles, hooks, straps, and locking pins.
3. The handling tool according to claim 1, characterized in that, During the process of the transport tool transitioning from the first state to the second state, the angle at which the connector (3) rotates around the first connection position (301) is any value within the range of 30° to 90°.
4. The handling tool according to claim 1, characterized in that, Multiple connectors (3) and casters (4) are provided, and each connector (3) is equipped with at least one caster (4); At least one set of the connectors (3) and the casters (4) are located at the front of the handling tool; At least one set of the connectors (3) and the casters (4) are located at the rear of the handling tool.
5. The handling tool according to claim 4, characterized in that, It also includes a frame (2) located below the base (1); Each of the connectors (3) is hinged to the base (1) via a first connection position (301) and to the frame (2) via a second connection position (302); the distance a between the first connection position (301) and the second connection position (302) is greater than zero.
6. The handling tool according to claim 1, characterized in that, The operating arm (5) is connected to the connector (3). The operating arm (5) and the caster (4) are located on both sides of the connector (3), and the length direction of the operating arm (5) is perpendicular to the first surface (31) of the connector (3).
7. The handling tool according to claim 6, characterized in that, The distance b between the first connection position (301) and the rear end of the base (1) is greater than zero; During the process of the handling tool changing from the first state to the second state, the operating arm (5) abuts against the rear end of the base (1).
8. The handling tool according to claim 5, characterized in that, The connector (3) is provided with a connecting part (33) for mounting the operating arm (5), the connecting part (33) including a sleeve, countersunk hole or cylindrical protrusion that can be inserted into the operating arm (5).
9. The handling tool according to claim 4, characterized in that, The frame (2) is provided with a space for accommodating the connector (3) and the caster (4).
10. The handling tool according to claim 4, characterized in that, When the transport tool is in the second state: the second surface (32) of the connector (3) located on the opposite side of the first surface (31) abuts against the first crossbeam (102) of the base (1); and / or, the frame (2) is located below the base (1) and abuts against at least a portion of it; And / or, the rear end of the base (1) is provided with an upwardly protruding baffle (11). ； And / or, a connecting ring (12) is provided at the rear end of the base (1). ； And / or, the caster (4) and the connector (3) are located within the vertical projection area of the base (1).