Distribution box transfer vehicle

Abstract

The utility model discloses a distribution box transfer car which comprises a car body, an automatic lifting assembly and a tray, the automatic lifting assembly is arranged on the car body, the tray is arranged on the automatic lifting assembly, the automatic lifting assembly is used for driving the tray to ascend and descend, and the tray is used for containing target workpieces. According to the distribution box operation vehicle, after the vehicle body transports a switch to a designated position, the automatic lifting assembly can drive the switch to automatically lift to the designated height of a switch cabinet through the tray, manpower can be saved, and the switch can be conveniently transferred.

Description

Technical Field

[0001] The utility model relates to the technical field of substations, and particularly relates to a distribution box transfer vehicle. Background Art

[0002] The switches in substations such as 10V substations and 35KV substations generally have large volume and weight, and need to be transported by a transfer cart. After the transfer cart transports the switch to the designated position, due to the different heights of the switch cabinets in the station, the switch also needs to be transported to different height positions of the switch cabinet. However, the existing transfer carts can only transport the switch to the designated position. After reaching the designated position, the switch can only be manually transported to different height positions of the switch cabinet. In this way, not only the operation is inconvenient, but also it is time-consuming and laborious. Content of the Utility Model

[0003] An embodiment of the utility model provides a distribution box transfer vehicle to solve the technical problem of inconvenient switch transfer in the existing substation technology.

[0004] An embodiment of the utility model provides a distribution box transfer vehicle, which includes a vehicle body, an automatic lifting assembly and a tray. The automatic lifting assembly is arranged on the vehicle body, the tray is arranged on the automatic lifting assembly, the automatic lifting assembly is used to drive the tray to lift, and the tray is used to hold the target workpiece.

[0005] Optionally, the distribution box transfer vehicle further includes a support seat and a positioning pin;

[0006] The number of the automatic lifting assemblies is two. The two automatic lifting assemblies are located on opposite sides of the vehicle body. The support seats are respectively arranged on the two automatic lifting assemblies, and the positioning pins are arranged on the top surface of the support seats;

[0007] The first positioning holes are respectively formed at opposite ends of the tray, and the first positioning holes are matched with the corresponding positioning pins so that the tray is installed on the two support seats.

[0008] Optionally, the support seat includes a connecting block and a bearing block. The connecting block is connected to the automatic lifting assembly, the bearing block is connected to the connecting block, and the positioning pin is located on the top surface of the bearing block;

[0009] The first positioning holes are matched with the corresponding positioning pins so that the tray is installed on the two bearing blocks.

[0010] Optionally, the distribution box transfer vehicle further includes a positioning rod and a locking rod. The positioning rod and the locking rod are arranged on the tray. The positioning rod is used to position the vehicle body, and the locking rod is used to fix the vehicle body.

[0011] Optionally, the tray includes a tray body, a first mounting plate, and a second mounting plate;

[0012] The two first mounting plates are connected to opposite sides of the tray body, and the first positioning holes are respectively formed in the two first mounting plates;

[0013] The two second mounting plates are connected to the other opposite sides of the tray body, and a first mounting hole and a second mounting hole are respectively formed in the two second mounting plates. The positioning rod is mounted on the first mounting holes of the two second mounting plates, and the locking rod is mounted on the second mounting holes of the two second mounting plates.

[0014] Optionally, the locking rod includes a rod body, a locking block, a handle, and a limiting component. The locking block and the handle are respectively connected to two ends of the rod body. The limiting component is arranged on the rod body and is used for limiting the rod body.

[0015] Optionally, the limiting component includes a limiting rod, a connecting rod, a mounting rod, and a spring;

[0016] An installation groove is axially formed in the rod body. The mounting rod is movably installed in the installation groove. One end of the connecting rod extends into the installation groove, and the other end of the connecting rod extends to the outside through the notch of the installation groove. The connecting rod is connected between the limiting rod and the mounting rod. The limiting rod and the mounting rod are parallel, and the limiting rod and the mounting rod are located on two sides of the connecting rod;

[0017] The spring is arranged on the mounting rod and abuts between the connecting rod and the inner wall of the installation groove. The notch of the installation groove is smaller than the diameter of the spring;

[0018] A limiting hole is further formed in one of the second mounting plates close to the handle. After the handle rotates, the limiting rod can be inserted into the limiting hole.

[0019] Optionally, the automatic lifting component includes a base, a slider, a lead screw, a slide rail, a driving element, and an electric control box;

[0020] The base is arranged on the vehicle body. The two slide rails are arranged on the base in parallel along the vertical direction;

[0021] The lead screw is rotatably mounted on the base. The lead screw is located between the two slide rails. The driving element is electrically connected to the electric control box, and the lead screw is in transmission connection with the driving element to drive the lead screw to rotate;

[0022] The slider is in threaded connection with the lead screw and is slidably connected to the slide rail. The tray is arranged on the slider.

[0023] Optionally, the vehicle body includes a frame, positioning wheels, universal wheels, and a third mounting plate. The positioning wheels and the universal wheels are provided at the bottom of the frame. The third mounting plate is provided on the frame, and the tray is provided on the third mounting plate.

[0024] Optionally, the cross-section of the third mounting plate is a curved wavy shape.

[0025] For the distribution box transfer vehicle of the present utility model, through the above structural settings, when transferring the switch, the vehicle body first walks to the switch, the automatic lifting assembly drives the tray to descend to the height of the switch, then the switch is pushed into the tray, and the automatic lifting assembly drives the tray and the switch to rise again. The vehicle body then walks to the switch cabinet, the automatic lifting assembly drives the tray and the switch to rise to the designated height of the switch cabinet, and then the switch is pushed into the switch cabinet, and the entire switch transfer work can be completed. It can be seen that compared with the prior art, for the distribution box transfer vehicle of the present utility model, after the vehicle body transports the switch to the designated position, through the cooperation of the automatic lifting assembly and the tray, the switch can be automatically lifted and lowered to the designated height of the switch cabinet, thereby saving manpower and facilitating the transfer of the switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0027] Figure 1 It is a schematic structural diagram of a distribution box transfer vehicle in an embodiment of the present utility model;

[0028] Figure 2 It is an exploded view of a distribution box transfer vehicle in an embodiment of the present utility model;

[0029] Figure 3 It is a partial structural schematic diagram of an automatic lifting assembly in an embodiment of the present utility model;

[0030] Figure 4 It is an exploded view of a positioning rod, a locking rod, and a tray in an embodiment of the present utility model;

[0031] Figure 5 It is a connection relationship diagram of a positioning rod, a locking rod, a tray, and a switch bracket in an embodiment of the present utility model;

[0032] Figure 6 For Figure 5 an enlarged view of the marked part A in

[0033] Figure 7Schematic diagram of the structure of the distribution box transfer vehicle in another embodiment of the present utility model;

[0034] Figure 8 Exploded view of the vehicle frame and the third mounting plate in an embodiment of the present utility model.

[0035] Explanation of the reference numerals in the drawings:

[0036] Distribution box transfer vehicle, 100; vehicle body, 10; vehicle frame, 12; positioning wheel, 14; universal wheel, 16; third mounting plate, 18; automatic lifting assembly, 20; base, 21; slider, 22; chute, 222; lead screw, 23; slide rail, 24; driving element, 25; electric control box, 26; tray, 30; first positioning hole, 31; disk body, 32; first mounting plate, 33; second mounting plate, 34; first mounting hole, 342; second mounting hole, 344; limiting hole, 346; support, 40; connecting block, 42; bearing block, 44; positioning pin, 50; positioning rod, 60; locking rod, 70; rod body, 72; locking block, 74; handle, 76; limiting assembly, 78; limiting rod, 782; connecting rod, 784; mounting rod, 786; spring, 788; switch bracket, 200; second positioning hole, 210; locking hole, 220.

[0037] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0038] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0039] It should be noted that all the directional indications (such as up, down, left, right, front, back,...) in the embodiments of the present utility model are only used to explain the relative position relationship and movement conditions between the components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0040] In addition, the descriptions involving "first", "second", etc. in the present utility model are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0041] Please refer to Figure 1 and Figure 2 , Figure 1 FIG. is a schematic structural view of the distribution box transfer vehicle 100, wherein the automatic lifting assembly 20 drives the tray 30 to a position at a certain height. Figure 2 FIG. is an exploded view of the distribution box transfer vehicle 100. An embodiment of the present utility model provides a distribution box transfer vehicle 100, including a vehicle body 10, an automatic lifting assembly 20, and a tray 30. The automatic lifting assembly 20 is provided on the vehicle body 10, the tray 30 is provided on the automatic lifting assembly 20, the automatic lifting assembly 20 is used to drive the tray 30 to lift, and the tray 30 is used to hold the target workpiece.

[0042] In the distribution box transfer vehicle 100 of this embodiment, the vehicle body 10 can move on the ground, and the power source of the automatic lifting assembly 20 can be one of electric drive, hydraulic cylinder drive, and air cylinder drive. The automatic lifting assembly 20 can drive the tray 30 to automatically lift. The target workpiece can be a switch. When transferring the switch, the vehicle body 10 first moves to the position of the switch, the automatic lifting assembly 20 drives the tray 30 to descend to the height of the switch, then the switch is pushed into the tray 30, and the automatic lifting assembly 20 drives the tray 30 and the switch to rise again. The vehicle body 10 then moves to the switch cabinet, and the automatic lifting assembly 20 drives the tray 30 and the switch to rise to the designated height of the switch cabinet, and then the switch is pushed into the switch cabinet.

[0043] In the distribution box transfer vehicle 100 of this embodiment, when the vehicle body 10 transports the switch to the designated position, the automatic lifting assembly 20 can drive the switch to automatically lift to the designated height of the switch cabinet through the tray 30, which can save manpower and facilitate the transfer of the switch.

[0044] Please refer to together Figure 3, in one embodiment, the automatic lifting assembly 20 includes a base 21, a slider 22, a lead screw 23, a slide rail 24, a driving element 25, and an electric control box 26; the base 21 is provided on the vehicle body 10, two slide rails 24 are provided on the base 21, the two slide rails 24 are parallel, and the two slide rails 24 are arranged in the vertical direction; the lead screw 23 is rotatably mounted on the base 21, the lead screw 23 is located between the two slide rails 24, and the lead screw 23 is in transmission connection with the driving element 25 to drive the lead screw 23 to rotate; a threaded hole (not shown in the figure) and two sliding grooves 222 are formed in the slider 22, the two sliding grooves 222 are located on both sides of the threaded hole, the slider 22 is in transmission connection with the lead screw 23 through the threaded hole, and the two sliding grooves 222 are respectively in snap-fit connection with the two slide rails 24, so that the slider 22 is slidably mounted on the two slide rails 24, and the tray 30 is provided on the slider 22; the driving element 25 is electrically connected to the electric control box 26, and the lead screw 23 is in transmission connection with the driving element 25 to drive the lead screw 23 to rotate.

[0045] The base 21 is installed on the vehicle body 10 by screws. The two slide rails 24 and the base 21 can be integrally formed. Brackets (not shown in the figure) are provided at both ends of the base 21. The lead screw 23 is rotatably mounted on the base 21 through the two brackets. The driving element 25 can be a motor, and the electric control box 26 can control the forward and reverse rotation of the motor. When the driving element 25 drives the lead screw 23 to rotate, the slider 22 is in meshing transmission with the lead screw 23 through the threaded hole, so that the slider 22 moves along the axial direction of the lead screw 23. The two slide rails 24 have the function of supporting the slider 22, enabling the slider 22 to carry the tray 30. The tray 30 is installed on the slider 22 by screws, and the tray 30 is used to hold workpieces. Driven by the driving element 25, the tray 30 can drive the switch to lift and stop emergently.

[0046] In one embodiment, the distribution box operation vehicle 100 further includes a support base 40 and a positioning pin 50; the number of the automatic lifting assemblies 20 is two, the two automatic lifting assemblies 20 are located on opposite sides of the vehicle body 10, support bases 40 are respectively provided on the sliders 22 of the two automatic lifting assemblies 20, and positioning pins 50 are provided on the top surfaces of the support bases 40; first positioning holes 31 are respectively formed at opposite ends of the tray 30, and the first positioning holes 31 are matched with the corresponding positioning pins 50, so that the tray 30 is installed on the two support bases 40. Through the cooperation of the positioning pins 50 and the first positioning holes 31, the tray 30 can be mounted on the support bases 40. In this way, it is possible to stack and repair the switches, that is, one switch and the tray 30 can be stacked together, and the switch can be stacked and waiting for repair. Another tray 30 is installed on the support base 40 to transfer other switches. In addition, trays 30 of different sizes can be provided, and the first positioning holes 31 of various sizes of trays 30 can be matched with the positioning pins 50. Only by replacing the tray 30 can switches of different sizes be transported, reducing the investment in the vehicle body 10 and saving costs.

[0047] In one embodiment, the support 40 includes a connecting block 42 and a bearing block 44. The connecting block 42 is connected to the slider 22, and the bearing block 44 is connected to the connecting block 42. The top surface of the bearing block 44 intersects with the side surface of the connecting block 42. The positioning pin 50 is located on the top surface of the bearing block 44. The first positioning hole 31 cooperates with the corresponding positioning pin 50 to install the tray 30 on the two bearing blocks 44. The bearing block 44 supports the tray 30. Since the top surface of the bearing block 44 intersects with the side surface of the connecting block 42, the side surfaces of the two connecting blocks 42 limit the tray 30, preventing the tray 30 from falling off.

[0048] Please refer to Figures 4 to 6 , in one embodiment, the distribution box transporter 100 further includes a positioning rod 60 and a locking rod 70. The positioning rod 60 and the locking rod 70 are provided on the tray 30. The positioning rod 60 is used to position the vehicle body 10, and the locking rod 70 is used to fix the vehicle body 10. The target workpiece is a switch, and a switch bracket 200 is provided on the switch cabinet. The switch is placed on the switch bracket 200. The switch bracket 200 is provided with a second positioning hole 210 and a locking hole 220. When the vehicle body 10 travels to the switch cabinet, the positioning rod 60 is inserted into the second positioning hole 210, and the locking rod 70 is inserted into the locking hole 220, thereby relatively fixing the vehicle body 10 and the switch bracket 200. Then, the switch can be pushed from the tray 30 to the switch bracket 200, or the switch on the switch bracket 200 can be pushed to the tray 30. The positioning rod 60 and the locking rod 70 cooperate with each other to fix the vehicle body 10, enabling the smooth transportation of the switch bracket 200 and preventing the switch bracket 200 from falling off the tray 30 during transportation.

[0049] In one embodiment, the tray 30 includes a tray body 32, a first mounting plate 33, and a second mounting plate 34. Two first mounting plates 33 are connected to opposite sides of the tray body 32, and first positioning holes 31 are respectively formed in the two first mounting plates 33. Two second mounting plates 34 are connected to the other opposite sides of the tray body 32, and a first mounting hole 342 and a second mounting hole 344 are respectively formed in the two second mounting plates 34. The positioning rod 60 is mounted on the first mounting holes 342 of the two second mounting plates 34, and the locking rod 70 is mounted on the second mounting holes 344 of the two second mounting plates 34.

[0050] The first mounting holes 342 on the two second mounting plates 34 can mount the positioning rod 60, and the second mounting holes 344 on the two second mounting plates 34 can mount the locking rod 70. Two first positioning holes 31 are formed in each first mounting plate 33. Correspondingly, two positioning pins 50 are provided on the top surface of each bearing block 44. The first mounting plate 33 is parallel to the bottom surface of the tray body 32. This setting facilitates the first mounting plate 33 to be placed on the top surface of the bearing block 44. The second mounting plate 34 is perpendicular to the bottom surface of the tray body 32. This setting facilitates the installation of the two positioning rods 60 and the locking rod 70 on the second mounting plate 34.

[0051] In one embodiment, the locking rod 70 includes a rod body 72, a locking block 74, a handle 76 and a limiting component 78. The locking block 74 and the handle 76 are respectively connected to two ends of the rod body 72. The limiting component 78 is arranged on the rod body 72 and is used for limiting the rod body 72. The locking block 74 can be a square block. When transferring the switch, a part of the locking block 74 and the rod body 72 penetrates into the lock hole 220. Then, the handle 76 is rotated. At this time, the locking block 74 cannot be disengaged from the lock hole 220, so that the vehicle body 10 and the switch bracket 200 are relatively fixed. After the locking rod 70 locks the switch bracket 200, the limiting component 78 can limit the rod body 72 to prevent the rod body 72 and the locking block 74 from rotating by mistake and disengaging from the lock hole 220, thereby preventing the switch bracket 200 and the vehicle body 10 from separating from each other.

[0052] In one embodiment, the limiting component 78 includes a limiting rod 782, a connecting rod 784, a mounting rod 786 and a spring 788; a mounting groove 722 is axially formed in the rod body 72, the mounting rod 786 is movably mounted in the mounting groove 722, one end of the connecting rod 784 extends into the mounting groove 722, and the other end of the connecting rod 784 passes through the notch of the mounting groove 722 and extends to the outside. The connecting rod 784 is connected between the limiting rod 782 and the mounting rod 786. The limiting rod 782 and the mounting rod 786 are parallel, and the limiting rod 782 and the mounting rod 786 are located on both sides of the connecting rod 784; the spring 788 is arranged on the mounting rod 786, and the spring 788 also abuts between the connecting rod 784 and the inner wall of the mounting groove 722. The notch of the mounting groove 722 is smaller than the diameter of the spring 788; a limiting hole 346 is also formed in a second mounting plate 34 close to the handle 76. After the handle 76 rotates, the limiting rod 782 can be inserted into the limiting hole 346. The mounting rod 786 is used to mount the spring 788. The included angle between the mounting rod 786 and the connecting rod 784 is 90°, and the included angle between the connecting rod 784 and the limiting rod 782 is 90°. The mounting groove 722 extends to the end of the rod body 72 to form an opening. When mounting the mounting rod 786, the spring 788 is sleeved on the mounting rod 786, and then the mounting rod 786 and the spring 788 are inserted into the mounting groove 722 from the opening. Finally, the handle 76 is connected to the end of the rod body 72, and the handle 76 closes the opening of the mounting groove 722. Since the notch of the mounting groove 722 is smaller than the diameter of the spring 788, the mounting rod 786 and the spring 788 are limited in the mounting groove 722 and cannot be disengaged from the mounting groove 722. When it is necessary to relatively lock and fix the switch bracket 200 and the vehicle body 10, the operator presses the connecting rod 784 in the direction close to the handle 76 to compress the spring 788. The handle 76, the rod body 72, the mounting rod 786, the connecting rod 784 and the limiting rod 782 rotate synchronously. When the limiting rod 782 rotates to the limiting hole 346, the pressing of the connecting rod 784 is released. Under the action of the spring 788, the end of the limiting rod 782 extends into the limiting hole 346. Through the mutual cooperation of the limiting hole 346 and the limiting rod 782, the handle 76 and the second mounting plate 34 are mutually limited, and the handle 76 cannot rotate. Since the lock block 74 and the rod body 72 are fixedly connected, in this way, after the lock block 74 extends into the lock hole 220 of the switch bracket 200, the lock block 74 cannot rotate either, so that the switch bracket 200 and the vehicle body 10 are relatively fixed. When unlocking the switch bracket 200 and the vehicle body 10, continue to press the connecting rod 784 and rotate the handle 76 in the reverse direction to disengage the limiting rod 782 from the limiting hole 346, thus completing the unlocking.

[0053] Please refer to Figure 7 and Figure 8, in one embodiment, the vehicle body 10 includes a frame 12, positioning wheels 14, universal wheels 16 and a third mounting plate 18. The positioning wheels 14 and the universal wheels 16 are provided at the bottom of the frame 12, the third mounting plate 18 is provided on the frame 12, and the tray 30 is provided on the third mounting plate 18. The frame 12 is made by splicing profiles and the like, with firm connection and convenient assembly. The positioning wheels 14 and the universal wheels 16 jointly support the frame 12 to move forward, and the frame 12 steers through the universal wheels 16. The number of the third mounting plates 18 is two, and the two third mounting plates 18 are erected on the opposite sides of the frame 12, and the tray 30 is connected between the two third mounting plates 18.

[0054] In one embodiment, the cross-section of the third mounting plate 18 is a curved wavy shape, and such a third mounting plate 18 has a higher connection strength, which is convenient for the fixing and installation of the tray 30.

[0055] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the inventive concept of the present invention, or direct / indirect application in other related technical fields are all included in the patent protection scope of the present invention.

Claims

1. A distribution box operation vehicle, characterized in that: It includes a vehicle body, an automatic lifting component and a tray, wherein the automatic lifting component is arranged on the vehicle body, the tray is arranged on the automatic lifting component, the automatic lifting component is used to drive the tray to rise and fall, and the tray is used to hold the target workpiece; wherein, The automatic lifting assembly includes a base, a slider, a lead screw, a slide rail, a driving element and an electric control box; The base is arranged on the vehicle body, and the two slide rails are arranged on the base in parallel along the vertical direction; The screw is rotatably mounted on the base, the screw is located between the two slide rails, the driving element is electrically connected to the electric control box, and the screw is transmission-connected to the driving element to drive the screw to rotate; The slider is threadedly connected to the lead screw and slidably connected to the slide rail, and the tray is arranged on the slider.

2. The distribution box operation vehicle according to claim 1, characterized in that: Also includes a bracket and a dowel pin; There are two automatic lifting components, which are located on opposite sides of the vehicle body. The two automatic lifting components are respectively provided with the brackets, and the top surfaces of the brackets are provided with the positioning pins. The tray is provided with first positioning holes at two opposite ends respectively, and the first positioning holes cooperate with the corresponding positioning pins so that the tray can be installed on the two brackets.

3. The distribution box operation vehicle according to claim 2, characterized in that: The bracket includes a connecting block and a bearing block, the connecting block is connected to the automatic lifting assembly, the bearing block is connected to the connecting block, and the positioning pin is located on the top surface of the bearing block; The first positioning holes cooperate with the corresponding positioning pins so that the tray is installed on the two bearing blocks.

4. The distribution box operation vehicle according to claim 2, characterized in that: It also includes a positioning rod and a locking rod, wherein the positioning rod and the locking rod are arranged on the tray, the positioning rod is used to position the vehicle body, and the locking rod is used to fix the vehicle body.

5. The distribution box operation vehicle according to claim 4, characterized in that: The tray comprises a tray body, a first mounting plate and a second mounting plate; The two first mounting plates are connected to opposite sides of the disk body, and the two first mounting plates are respectively provided with the first positioning holes; The two second mounting plates are connected to the other two opposite sides of the disk body, and the two second mounting plates are respectively provided with a first mounting hole and a second mounting hole. The positioning rod is mounted on the first mounting hole of the two second mounting plates, and the locking rod is mounted on the second mounting hole of the two second mounting plates.

6. The distribution box operation vehicle according to claim 5, characterized in that: The locking rod comprises a rod body, a locking block, a handle and a limiting assembly. The locking block and the handle are respectively connected to two ends of the rod body. The limiting assembly is arranged on the rod body and is used to limit the rod body.

7. The distribution box operation vehicle according to claim 6, characterized in that: The limiting assembly includes a limiting rod, a connecting rod, a mounting rod and a spring; The rod body is provided with a mounting groove along its axial direction, the mounting rod is movably mounted in the mounting groove, one end of the connecting rod extends into the mounting groove, the other end of the connecting rod passes through the notch of the mounting groove and extends to the outside, the connecting rod is connected between the limiting rod and the mounting rod, the limiting rod and the mounting rod are parallel, and the limiting rod and the mounting rod are located on both sides of the connecting rod; The spring is arranged on the installation rod, and the spring is also arranged between the connecting rod and the inner wall of the installation groove, and the notch of the installation groove is smaller than the diameter of the spring; A limiting hole is also provided on the second mounting plate close to the handle, and after the handle is rotated, the limiting rod can be inserted into the limiting hole.

8. The distribution box operation vehicle according to any one of claims 1 to 7, characterized in that: The vehicle body comprises a vehicle frame, a positioning wheel, a universal wheel and a third mounting plate, wherein the positioning wheel and the universal wheel are arranged at the bottom of the vehicle frame, the third mounting plate is arranged on the vehicle frame, and the tray is arranged on the third mounting plate.

9. The distribution box operation vehicle according to claim 8, characterized in that: The cross section of the third mounting plate is a curved wave shape.

Images