A charging pile testing device is provided

Abstract

The utility model discloses a kind of charging pile calibrating device bearing trolley, including vehicle body and lifting mechanism, vehicle body includes bearing platform and the push-pull frame of being arranged at the rear end of bearing platform, bearing platform is slidably installed at the top of lifting mechanism, and can be suspended from the front end of lifting mechanism, and the both sides of bearing platform are respectively equipped with moving wheel, box is equipped on bearing platform, box and push-pull frame abut, power supply panel and grounding disc are equipped in box, the front side of bearing platform in box is equipped with the bearing area for bearing direct-current adjustable resistive load, the top of box is equipped with the placement table for bearing charging pile calibrator. The bearing trolley of this charging pile calibrating device is very convenient to convey vehicle up and down, save time and effort, improve the efficiency of calibration work.

Description

Technical Field

[0001] This utility model relates to the technical field of charging pile calibration equipment, and specifically to a carrier trolley for a charging pile calibration device. Background Technology

[0002] Currently, the calibration equipment used for charging pile verification mainly includes a DC adjustable resistive load, a charging pile calibrator, and power supply panels and grounding panels. During charging pile verification, the calibration equipment needs to be loaded onto a vehicle, transported to the charging pile location, and then unloaded for verification. Because the DC adjustable resistive load and charging pile calibrator are quite heavy, and there are many power supply panels and grounding panels, loading and unloading them is extremely inconvenient. Furthermore, currently, the calibration equipment is generally moved separately, which is time-consuming, labor-intensive, and inefficient, affecting the efficiency of the verification work. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a carrying trolley for a charging pile calibration device that is very convenient for loading and unloading, saves time and effort, and improves the efficiency of calibration work.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A carrying trolley for a charging pile calibration device includes a trolley body and a lifting mechanism. The trolley body includes a carrying platform and a push-pull frame located at the rear end of the carrying platform. The carrying platform is slidably mounted on the top of the lifting mechanism and can be suspended from the front end of the lifting mechanism. The carrying platform is provided with casters on both sides. A housing is provided on the carrying platform, and the housing abuts against the push-pull frame. A power supply panel and a grounding panel are provided inside the housing. The carrying platform has a support area for supporting DC adjustable resistive loads on the front side of the housing. The top of the housing has a placement platform for supporting the charging pile calibrator.

[0005] As a further improvement to the above technical solution: The box body is equipped with side doors on both sides in the direction of vehicle travel.

[0006] The rear side of the enclosure is provided with an installation panel, which is equipped with a socket, a grounding terminal, a first rotating handle, and a second rotating handle. The first rotating handle is connected to the power supply panel and is used to rotate the power supply panel. The second rotating handle is connected to the grounding plate and is used to rotate the grounding plate. A power cord is wound around the power supply panel. One end of the power cord is used to connect to the power socket, and the other end is provided with a power plug for connecting to an external power source. A grounding wire is wound around the grounding plate. One end of the grounding wire is connected to the grounding terminal, and the other end is provided with a grounding connector for grounding.

[0007] The inside of the side-opening door is provided with a hanging part, on which a connecting wire is hung. The connecting wire is used to connect the power cord to the power socket.

[0008] The lifting mechanism has a guide rail at the top, and the carrying platform slides on the guide rail. The lifting mechanism has a stop at the rear end of the guide rail and a latch at the front end of the guide rail. The latch is used to lock the carrying platform when it comes into contact with the stop.

[0009] The front end of the carrying platform is provided with a pushing mechanism, which is used to push the charging pile calibrator and press the charging pile calibrator tightly between the pushing mechanism and the box.

[0010] The pushing mechanism includes a pushing block and a pushing screw. The pushing block has a groove on one side, which is fitted onto the front end of the bearing platform. The pushing screw passes through the bottom wall of the groove and is threadedly connected to the bearing platform. The pushing screw has an outer protruding ring, which is pressed against the outside of the pushing block. The outer end of the pushing screw has a rotating handle.

[0011] The box is placed on a support platform. The support platform is provided with locking mechanisms on both sides, and the box is provided with locking slots on both sides. The locking mechanisms are fastened into the locking slots.

[0012] The locking mechanism includes a locking block and a locking screw. The side of the supporting platform is provided with a polygonal hole, and the bottom wall of the polygonal hole is provided with a threaded hole. One side of the locking block is provided with a guide post and a locking post. The guide post is inserted into the polygonal hole. The locking screw passes through the locking block and the guide post and is threadedly connected to the threaded hole. The locking screw is provided with a pressure ring, which is pressed against the outside of the locking block. The outer end of the locking screw is provided with a turning handle. The locking post is inserted into the lock mouth.

[0013] The top of the box is equipped with railings on both sides.

[0014] Compared with the prior art, the advantages of this utility model are: The charging pile calibration device of this utility model uses a carrying trolley. When in use, the DC adjustable resistive load is placed on the carrying area (or the DC adjustable resistive load is originally placed on the carrying area), and the charging pile calibrator is placed on the placement platform (or the charging pile calibrator is originally placed on the placement platform). The process of loading the charging pile calibration device onto the transport vehicle is as follows: First, the lifting mechanism is in the retracted state (at this time, the moving wheels are supported on the ground, and the lifting mechanism is suspended below the carrying platform). The carrying trolley of the charging pile calibration device is pushed to the rear of the transport vehicle by the push-pull frame. Second, the lifting mechanism extends upward, raising the moving wheels of the carrying platform to the same height as the rear compartment of the transport vehicle. Then, the carrying platform is pushed outward towards the front of the lifting mechanism by the push-pull frame, allowing the carrying platform to slide relative to the lifting mechanism towards the rear compartment of the transport vehicle until all moving wheels are located on the rear compartment of the transport vehicle. Next, the lifting mechanism retracts upward to the folded state, and then is pushed back below the carrying platform. Finally, the entire carrying trolley of the charging pile calibration device is pushed into the rear compartment of the transport vehicle. The process of unloading the charging pile calibration device from the transport vehicle is as follows: First, the entire charging pile calibration device is pushed to the entrance / exit of the rear compartment of the transport vehicle using a carrying trolley. Then, the retracted lifting mechanism is pushed outside the rear compartment of the transport vehicle. Second, the lifting mechanism extends downwards to support the ground, and then the carrying platform is pushed back onto the lifting mechanism, thus unloading the charging pile calibration device from the transport vehicle using the carrying trolley. The charging pile calibration device includes a power supply panel, a grounding panel, a DC adjustable resistive load, and a charging pile calibrator. The charging pile calibration device is transported using this carrying trolley, making loading and unloading from the transport vehicle very convenient, saving time and labor, and improving the efficiency of the calibration work. Attached Figure Description

[0015] Figure 1 This is a front view structural schematic diagram of the carrying trolley for the charging pile calibration device of this utility model when the lifting mechanism is in the retracted state.

[0016] Figure 2 yes Figure 1 A magnified structural diagram of point A in the middle.

[0017] Figure 3 This is a front view structural schematic diagram of the carrying trolley for the charging pile calibration device of this utility model when the lifting mechanism is in the extended state.

[0018] Figure 4 This is a schematic diagram of the structure of the carrying trolley for the charging pile calibration device of this utility model when it is loaded onto the transport vehicle.

[0019] Figure 5 This is a schematic diagram of the structure of the carrier trolley of the charging pile calibration device of this utility model when the side door is opened.

[0020] Figure 6 This is a top view of the internal structure of the carrier trolley used in the charging pile calibration device of this utility model.

[0021] Figure 7 This is a side view of the supporting trolley used in the charging pile calibration device of this utility model.

[0022] Figure 8 yes Figure 7 A magnified structural diagram at point B in the middle.

[0023] Figure 9 This is a schematic diagram of the locking mechanism of the carrying trolley used in the charging pile calibration device of this utility model.

[0024] The labels in the diagram represent: 1. Vehicle body; 11. Load-bearing platform; 111. Casters; 112. Polygonal hole; 113. Threaded hole; 12. Push-pull frame; 13. Placement area; 2. Lifting mechanism; 21. Guide rail; 211. Stopping part; 212. Lock; 3. Box body; 31. Placement platform; 32. Side door; 321. Cable hanging part; 322. Connecting cable; 33. Lock; 34. Railing; 4. Power panel; 41. Power cord; 42. Power plug; 5. Grounding plate; 51. Grounding wire; 52. 6. Grounding connector; 7. DC adjustable resistive load; 8. Charging pile calibrator; 9. Mounting panel; 10. Socket; 11. Grounding pile head; 12. First rotating handle; 13. Second rotating handle; 14. Pushing mechanism; 15. Pushing block; 16. Pushing screw; 17. Outer protruding ring; 18. Rotating handle; 19. Slot; 20. Locking mechanism; 11. Locking block; 12. Guide post; 13. Locking post; 14. Locking screw; 15. Pressure ring; 16. Tightening handle. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] Figures 1 to 9 This invention illustrates an embodiment of a carrier trolley for a charging pile calibration device. The carrier trolley in this embodiment includes a vehicle body 1 and a lifting mechanism 2. The vehicle body 1 includes a carrier platform 11 and a push-pull frame 12 located at the rear end of the carrier platform 11. The carrier platform 11 is slidably mounted on the top of the lifting mechanism 2 and can be suspended from the front end of the lifting mechanism 2. The carrier platform 11 is provided with moving wheels 111 on both sides. A housing 3 is provided on the carrier platform 11, and the housing 3 abuts against the push-pull frame 12. A power supply panel 4 and a grounding panel 5 are provided inside the housing 3. The carrier platform 11 has a support area 13 for supporting a DC adjustable resistive load 6 on the front side of the housing 3. The top of the housing 3 has a placement platform 31 for supporting the charging pile calibrator 61.

[0030] When in use, place the DC adjustable resistive load 6 on the placement area 13 (or the DC adjustable resistive load 6 is originally placed on the placement area 13), and place the charging pile calibrator 61 on the placement platform 31 (or the charging pile calibrator 61 is originally placed on the placement platform 31). The process of loading the charging pile calibration device onto the transport vehicle is as follows: First, the lifting mechanism 2 is in the retracted state (at this time, the moving wheels 111 are supported on the ground, and the lifting mechanism 2 is suspended below the carrying platform 11). The carrying trolley of the charging pile calibration device is pushed by the push-pull frame 12 to the rear of the transport vehicle. Second, the lifting mechanism 2 extends upward, raising the moving wheels 111 of the carrying platform 11 to the same height as the rear compartment of the transport vehicle. Then, the push-pull frame 12 pushes the carrying platform 11 to the front end of the lifting mechanism 2, allowing the carrying platform 11 to slide relative to the lifting mechanism 2 towards the rear compartment of the transport vehicle until all the moving wheels 111 are located on the rear compartment of the transport vehicle. Next, the lifting mechanism 2 retracts upward to the folded state, and then the lifting mechanism 2 is pushed back below the carrying platform 11. Finally, the carrying trolley of the charging pile calibration device is pushed into the rear compartment of the transport vehicle. The process of unloading the charging pile calibration device from the transport vehicle is as follows: First, the entire charging pile calibration device is pushed to the entrance / exit of the rear compartment of the transport vehicle using a carrying trolley. Then, the retracted lifting mechanism 2 is pushed outside the rear compartment of the transport vehicle. Second, the lifting mechanism 2 extends downwards to be supported on the ground, and then the carrying platform 11 is pushed back onto the lifting mechanism 2, thus realizing the unloading of the charging pile calibration device from the transport vehicle using the carrying trolley. The charging pile calibration device includes a power supply panel 4, a grounding panel 5, a DC adjustable resistive load 6, and a charging pile calibrator 61. The charging pile calibration device is transported by carrying trolley, making loading and unloading from the transport vehicle very convenient, saving time and effort, and improving the efficiency of the calibration work.

[0031] Furthermore, such as Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, in this embodiment, the housing 3 is provided with side doors 32 on both sides of the vehicle body 1 in the forward direction. On the one hand, this facilitates the installation and replacement of the power supply panel 4 and the grounding panel 5 in the housing 3, and on the other hand, it facilitates wiring.

[0032] Furthermore, such as Figure 7As shown, in this embodiment, the rear side of the housing 3 is provided with a mounting panel 7. The mounting panel 7 is equipped with a socket 71, a grounding terminal 72, a first rotating handle 73, and a second rotating handle 74. The first rotating handle 73 is connected to the power supply panel 4 and is used to rotate the power supply panel 4. The second rotating handle 74 is connected to the grounding plate 5 and is used to rotate the grounding plate 5. A power cord 41 is wound around the power supply panel 4. One end of the power cord 41 is used to connect to the power socket 71, and the other end has a power connector 42 for connecting to an external power source. A grounding wire 51 is wound around the grounding plate 5. One end of the grounding wire 51 is connected to the grounding terminal 72, and the other end has a grounding connector 52 for grounding. The first rotating handle 73 is connected to the power supply panel 4 and is used to rotate the power supply panel 4, facilitating the winding and unwinding of the power cord 41. The second rotating handle 74 is connected to the grounding plate 5 and is used to rotate the grounding plate 5, facilitating the winding and unwinding of the grounding wire 51. The socket 71 has multiple sets of sockets, facilitating the connection of the DC adjustable resistive load 6 and the charging pile calibrator 61. During testing, one end of the power cord 41 is connected to the power socket 71, the power plug 42 is connected to the external power source, the grounding connector 52 is grounded, the power wires of the DC adjustable resistive load 6 and the charging pile calibrator 61 are connected to the socket 71, and the ground wires of the DC adjustable resistive load 6 and the charging pile calibrator 61 are connected to the power plug 42. Multiple power plugs 42 can be provided to facilitate separate grounding connections for multiple devices.

[0033] Furthermore, such as Figure 5 As shown, in this embodiment, a hanging part 321 is provided on the inner side of the side-opening door 32, and a connecting wire 322 is hung on the hanging part 321. The connecting wire 322 is used to connect the power cord 41 and the power socket 71. The power cord 41 and the power socket 71 are detachably connected by the connecting wire 322. In this way, after the power cord 41 is connected to an external power source, the connecting wire 322 can be used to connect the power cord 41 to the power socket 71, avoiding the connecting wire 322 from affecting the rotation and wire feeding movement of the power reel 4. Similarly, before the power reel 4 rotates to retract the wire, the connection between the connecting wire 322 and the power cord 41 and the power socket 71 is removed.

[0034] Furthermore, such as Figure 4 As shown, in this embodiment, the top of the lifting mechanism 2 is provided with a guide rail 21, and the carrying platform 11 is slidably mounted on the guide rail 21. The lifting mechanism 2 has a stop part 211 at the rear end of the guide rail 21 and a latch 212 at the front end of the guide rail 21. The latch 212 is used to lock the carrying platform 11 when it abuts against the stop part 211. When the carrying platform 11 abuts against the stop part 211, it can be locked by the latch 212 to prevent the carrying platform 11 from sliding relative to the lifting mechanism 2. Preferably, an anti-detachment part can also be provided at the end of the guide rail 21 away from the stop part 211 to limit the cantilever position of the carrying platform 11 and prevent the carrying platform 11 from detaching from the guide rail 21.

[0035] Furthermore, such as Figure 1and Figure 2 As shown, in this embodiment, the front end of the carrying platform 11 is provided with a pushing mechanism 8. The pushing mechanism 8 is used to push the charging pile calibrator 61, so that the charging pile calibrator 61 is pressed tightly between the pushing mechanism 8 and the housing 3. The charging pile calibrator 61 is pressed tightly between the pushing mechanism 8 and the housing 3, which improves the stability of loading and unloading the transport vehicle and the transportation process.

[0036] Furthermore, such as Figure 2 As shown, in this embodiment, the pushing mechanism 8 includes a pushing block 81 and a pushing screw 82. A groove 83 is provided on one side of the pushing block 81, and the groove 83 is fitted onto the front end of the bearing platform 11. The pushing screw 82 passes through the bottom wall of the groove 83 and is threadedly connected to the bearing platform 11. An outer protruding ring 821 is provided on the pushing screw 82, pressing against the outside of the pushing block 81. A rotating handle 822 is provided at the outer end of the pushing screw 82. By rotating the handle 822 to rotate the pushing screw 82 in the forward direction, the pushing screw 82 moves in the tightening direction, causing the outer protruding ring 821 to push the pushing block 81 against the outside of the pushing block 81, thus pressing the pushing block 81 against the outside of the DC adjustable resistive load 6 until the DC adjustable resistive load 6 is pressed between the pushing mechanism 8 and the housing 3. Conversely, by rotating the handle 822 in the opposite direction to rotate the push screw 82, the push screw 82 can be moved in the loosening direction until it separates from the bearing platform 11. At this point, the push block 81 can be removed, facilitating the unloading of the DC adjustable resistive load 6. The structure is simple and the operation is convenient. Specifically, the front end of the bearing platform 11 is provided with a screw hole, and the push screw 82 is threadedly connected to the screw hole.

[0037] Furthermore, such as Figure 1 , Figure 3 and Figure 4 As shown, in this embodiment, the box body 3 is placed on the support platform 11. Locking mechanisms 9 are provided on both sides of the support platform 11, and locking slots 33 are provided on both sides of the box body 3. The locking mechanisms 9 are fastened into the locking slots 33. The two sides of the box body 3 are locked by the locking mechanisms 9, improving the stability of loading and unloading from the transport vehicle and during transportation, and facilitating assembly and disassembly.

[0038] Furthermore, such as Figure 9As shown, in this embodiment, the bolt mechanism 9 includes a locking block 91 and a locking screw 92. The side of the bearing platform 11 is provided with a polygonal hole 112, and the bottom wall of the polygonal hole 112 is provided with a threaded hole 113. The side of the locking block 91 is provided with a guide post 911 and a locking post 912. The guide post 911 is inserted into the polygonal hole 112. The locking screw 92 passes through the locking block 91 and the guide post 911 and is threadedly connected to the threaded hole 113. The locking screw 92 is provided with a pressure ring 921, which is pressed against the outside of the locking block 91. The outer end of the locking screw 92 is provided with a screwing handle 922. The locking post 912 is inserted into the lock opening 33. By turning the handle 922 clockwise, the locking screw 92 moves in the tightening direction, causing the pressure ring 921 to push the locking block 91 against the outside of the locking block 91. This moves the guide pin 911 into the polygonal hole 112 until the locking pin 912 is inserted into the locking slot 33, thus locking the housing 3. Conversely, by turning the handle 922 counterclockwise, the locking screw 92 moves in the loosening direction until it separates from the supporting platform 11. At this point, the locking block 91 can be removed, facilitating the unloading of the housing 3. The structure is simple and the operation is convenient.

[0039] Furthermore, in this embodiment, railings 34 are provided on both sides of the top of the housing 3. The railings 34 have a blocking and limiting function on the charging pile calibrator 61 placed on the placement platform 31, preventing the charging pile calibrator 61 from falling off the placement platform 31.

[0040] Furthermore, in this embodiment, the lifting mechanism 2 is a conventional mechanism with retractable lifting function, such as... Figure 2 and Figure 3 One embodiment includes a base plate, a scissor frame, and a top plate. The scissor frame is mounted on the base plate, and the top plate is mounted on the scissor frame. The base plate is equipped with a driver for driving the scissor frame to move up and down. The support platform 11 is slidably mounted on the top plate.

[0041] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. A carrier trolley for a charging pile calibration device, characterized in that: The vehicle includes a vehicle body (1) and a lifting mechanism (2). The vehicle body (1) includes a support platform (11) and a push-pull frame (12) located at the rear end of the support platform (11). The support platform (11) is slidably mounted on the top of the lifting mechanism (2) and can be suspended from the front end of the lifting mechanism (2). The support platform (11) is provided with moving wheels (111) on both sides. The support platform (11) is provided with a box (3). The box (3) abuts against the push-pull frame (12). The box (3) is provided with a power supply panel (4) and a grounding panel (5). The support platform (11) has a support area (13) for supporting a DC adjustable resistive load (6) on the front side of the box (3). The top of the box (3) is provided with a placement platform (31) for supporting a charging pile calibrator (61).

2. The carrying trolley for the charging pile calibration device according to claim 1, characterized in that: The box (3) is provided with side doors (32) on both sides of the vehicle body (1) in the direction of travel.

3. The carrying trolley for the charging pile calibration device according to claim 2, characterized in that: The rear side of the housing (3) is provided with an installation panel (7). The installation panel (7) is provided with a socket (71), a grounding head (72), a first rotating handle (73) and a second rotating handle (74). The first rotating handle (73) is connected to the power supply plate (4) and is used to rotate the power supply plate (4). The second rotating handle (74) is connected to the grounding plate (5) and is used to rotate the grounding plate (5). A power cord (41) is wound on the power supply plate (4). One end of the power cord (41) is used to connect to the power socket (71), and the other end is provided with a power plug (42) for connecting to an external power source. A grounding wire (51) is wound on the grounding plate (5). One end of the grounding wire (51) is connected to the grounding head (72), and the other end is provided with a grounding connector (52) for grounding.

4. The carrying trolley for the charging pile calibration device according to claim 3, characterized in that: The inside of the side door (32) is provided with a hanging part (321), and a connecting wire (322) is hung on the hanging part (321). The connecting wire (322) is used to connect the power cord (41) and the power socket (71).

5. The carrying trolley for the charging pile calibration device according to claim 1, characterized in that: The top of the lifting mechanism (2) is provided with a guide rail (21), and the bearing platform (11) slides on the guide rail (21). The lifting mechanism (2) is provided with a stop part (211) at the rear end of the guide rail (21) and a latch (212) at the front end of the guide rail (21). The latch (212) is used to lock the bearing platform (11) when it comes into contact with the stop part (211).

6. The carrying trolley for the charging pile calibration device according to any one of claims 1 to 5, characterized in that: The front end of the carrying platform (11) is provided with a pushing mechanism (8), which is used to push the charging pile calibrator (61) and make the charging pile calibrator (61) press against the pushing mechanism (8) and the box (3).

7. The carrying trolley for the charging pile calibration device according to claim 6, characterized in that: The pushing mechanism (8) includes a pushing block (81) and a pushing screw (82). The pushing block (81) has a sleeve groove (83) on one side. The sleeve groove (83) is sleeved on the front end of the bearing platform (11). The pushing screw (82) passes through the bottom wall of the sleeve groove (83) and is threadedly connected to the bearing platform (11). The pushing screw (82) has an outer protruding ring (821) on it. The outer protruding ring (821) is pressed against the outside of the pushing block (81). The outer end of the pushing screw (82) has a rotating handle (822).

8. The carrying trolley for the charging pile calibration device according to any one of claims 1 to 5, characterized in that: The box (3) is placed on the support platform (11). The support platform (11) is provided with locking mechanisms (9) on both sides. The box (3) is provided with lock openings (33) on both sides. The locking mechanisms (9) are fastened in the lock openings (33).

9. The carrying trolley for the charging pile calibration device according to claim 8, characterized in that: The locking mechanism (9) includes a locking block (91) and a locking screw (92). The side of the bearing platform (11) is provided with a polygonal hole (112). The bottom wall of the polygonal hole (112) is provided with a threaded hole (113). The side of the locking block (91) is provided with a guide post (911) and a locking post (912). The guide post (911) is inserted into the polygonal hole (112). The locking screw (92) passes through the locking block (91), the guide post (911) and is threadedly connected to the threaded hole (113). The locking screw (92) is provided with a pressure ring (921). The pressure ring (921) is pressed on the outside of the locking block (91). The outer end of the locking screw (92) is provided with a screw handle (922). The locking post (912) is inserted into the lock opening (33).

10. The carrying trolley for the charging pile calibration device according to any one of claims 1 to 5, characterized in that: The top of the box (3) is provided with railings (34) on both sides.

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