A combined dc charging pile testing device

Abstract

The utility model relates to charging pile test technical field, specifically disclose a combined direct current charging pile testing device, include: moving plate, still include: water tank, water tank lower extreme and moving plate upper end fixed connection, heating assembly, heating assembly sets up in shell one upper end, heating assembly is used for conveying hot air in the shell one inner chamber, water spraying assembly, water spraying assembly sets up in shell one inner chamber, and water spraying assembly is used for waterproof test to charging pile. Through heating assembly can heat the air, then convey the hot air to shell one inner chamber, thereby to charging pile carries out high temperature environment test, through water spraying assembly can carry out waterproof test to charging pile, simultaneously, with the use of heating assembly combination, can simulate high temperature and high humidity environment in shell one inner chamber, thereby can carry out combined test to charging pile, thereby when carrying out test to charging pile, need not frequently change test equipment and environment, can improve test efficiency.

Description

Technical Field

[0001] This utility model relates to the field of charging pile testing technology, specifically a combined DC charging pile testing device. Background Technology

[0002] Charging piles function similarly to gas pumps at gas stations. They can be fixed to the ground or walls and installed in public buildings (public buildings, shopping malls, public parking lots) and residential parking lots or charging stations. They can charge various models of electric vehicles according to different voltage levels. The input end of the charging pile is directly connected to the AC power grid, and the output end is equipped with a charging plug for charging electric vehicles. DC charging piles are the mainstream type of commercial charging piles, and all of them need to undergo quality testing before being put into use.

[0003] Currently, most testing devices for DC charging piles on the market are limited to single-item testing, such as waterproofing or high-temperature testing. This testing method has obvious limitations: it can only reflect the performance of the charging pile in a certain aspect, but cannot comprehensively evaluate its overall performance under different environmental conditions. For example, waterproofing testing cannot reveal the performance changes of the charging pile in a high-temperature environment, and conversely, high-temperature testing cannot consider its waterproofing capability. At the same time, for charging piles that require multiple tests, using such single-item testing devices requires frequent changes of testing equipment and environment, resulting in low testing efficiency and a significant increase in cost and time. Therefore, we propose a combined DC charging pile testing device. Utility Model Content

[0004] The purpose of this invention is to provide a combined DC charging pile testing device to solve the problem that the devices mentioned in the background art are mostly limited to single-item testing when testing charging piles.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a combined DC charging pile testing device, comprising: a movable plate, It also includes: a water tank, the lower end of which is fixedly connected to the upper end of the movable plate; and a housing, the lower end of which is fixedly connected to the upper end of the movable plate. A heating element is disposed at the upper end of the outer casing and is used to deliver hot air into the inner cavity of the outer casing. The water spray assembly is housed in an inner cavity of the outer casing and is used to conduct waterproof tests on the charging pile.

[0006] The heating component includes a second outer shell that is fixedly connected to the upper end of the first outer shell. A connecting groove is symmetrically opened on one side of the middle of the second outer shell. A fan is installed in the inner cavity of each connecting groove. A dustproof plate is fixedly connected to the inner cavity of each connecting groove away from the connecting groove. A heating rod is installed in the inner cavity of the second outer shell. An air outlet pipe is fixedly connected to the inner cavity of the second outer shell away from the connecting groove. The output end of the air outlet pipe extends through the outer surface of the first outer shell and into the inner cavity of the first outer shell.

[0007] By adopting the above technical solution, a dustproof plate is provided to reduce the dust content of the air transported to the inner cavity of the second outer shell, thus preventing dust from being transported to the inner cavity of the first outer shell along with the heated air.

[0008] The water spray assembly includes two support columns, each with a nozzle pipe fixedly connected to its opposite side. A corrugated pipe is fixedly connected to the lower part of one of the nozzle pipes, and a water pump is fixedly connected to the input end of the corrugated pipe. The water pump is located inside the water tank and is fixedly connected to the bottom wall of the water tank. A support plate is fixedly connected to the upper ends of both support columns, and a nozzle pipe is fixedly connected to the lower end of the support plate. A rotating assembly is symmetrically fixedly connected to the upper parts of both support columns.

[0009] By adopting the above technical solution, the corrugated pipe is provided so that when the motor drives the screw to rotate, and then the screw and the support column cooperate to drive the water spray assembly to move, the water supply to the inner cavity of the nozzle pipe is not affected by the corrugated pipe, thus improving the flexibility of the device.

[0010] The rotating assembly includes two connecting plates, one of which is fixedly connected to an adjacent support column. A limit block is fixedly connected to the side of one connecting plate away from the other connecting plate. A rack is slidably connected to the inner cavity of the limit block. A gear is meshed on one side of the rack. An electric push rod is provided at the lower end of the rack. A connecting plate is fixedly connected to the lower end of the electric push rod. The second connecting plate is fixedly connected to the adjacent connecting plate. A connecting pipe is fixedly connected to one of the connecting plates. A nozzle pipe is rotatably connected to the side of the connecting pipe away from the adjacent connecting plate. The nozzle pipe is fixedly connected to the gear. The connecting plate on the side adjacent to the gear is rotatably connected to the nozzle pipe.

[0011] In the above technical solution, by running the electric push rod, the output end of the electric push rod piston rod drives the rack to slide in the inner cavity of the limit block, thereby enabling the rack to mesh with the adjacent gear and drive the gear to rotate. Since the gear and the second nozzle pipe are fixedly connected, when the gear rotates, it can drive the second nozzle pipe to flip, thereby adjusting the spray angle of the nozzle on the second nozzle pipe and enabling the second nozzle pipe to spray water at different height positions of the charging pile.

[0012] Among them, the upper part of nozzle tube one is fixedly connected to a multi-port pipe, the side of nozzle tube three near the connecting pipe is fixedly connected to the multi-port pipe together with the two connecting pipes, and the lower part of nozzle tube adjacent to the corrugated pipe is fixedly connected to the output end of the corrugated pipe.

[0013] The above technical solution involves setting up a multi-port pipe, which allows the water source in the inner cavity of the third nozzle pipe to be evenly distributed to the inner cavity of the second nozzle pipe and the inner cavity of the first nozzle pipe. This enables water to be sprayed onto the charging pile from multiple angles, allowing for multi-directional waterproof testing of the charging pile.

[0014] The inner wall of the outer shell is fixedly connected to a bearing plate 1. The upper middle part of the bearing plate 1 is fixedly connected to a bearing plate 2. The bearing plate 1 is symmetrically fixedly connected to a connecting plate 3. The inner cavity of the connecting plate 3 on the same side is slidably connected to the support column. Several water outlet grooves are opened on the side of the two connecting plates 3 that are close to each other, and the water outlet grooves are set at an inclination. A manifold is fixedly connected to one side of the bearing plate 1. A water outlet pipe is fixedly connected to one side of the manifold. The output end of the water outlet pipe extends through the inner cavity of the outer shell 1 to the outer surface of the outer shell 1. Several T-shaped blocks are set in the inner cavity of the bearing plate 2. The T-shaped blocks are fixedly connected to the charging pile and the bearing plate 2 together by bolts.

[0015] In the above technical solution, by allowing the inner cavities of the connecting plate on the same side to slide with the support column, the position of the support column can be limited when the motor drives the screw to rotate and then the screw drives the support column to move, thus facilitating the movement of the support column by the screw.

[0016] The water tank has a hinged lid at the top, a water inlet pipe fixedly connected to one side of the top of the water tank, and the inner cavity of the water inlet pipe is connected to the inner cavity of the water tank. An observation window is provided on one side of the water tank.

[0017] The above technical solution includes an observation window, which allows staff to easily observe the water level inside the tank. Water can be replenished to the tank through the inlet pipe, preventing the water level from dropping too low and causing the pump to run dry, which could damage the pump.

[0018] This utility model has at least the following beneficial effects: The movable plate allows the entire device to move, and the water tank stores water, providing ample water for waterproof testing of the water spray assembly. The outer casing prevents water from splashing onto surrounding testing equipment during the waterproof testing process. The heating component heats the air and delivers it into the inner cavity of the outer casing for high-temperature environmental testing of the charging pile. The water spray assembly, when used in conjunction with the heating component, simulates a high-temperature and high-humidity environment within the outer casing, enabling combined testing of the charging pile. This eliminates the need for frequent changes in testing equipment and environment, improving testing efficiency and saving costs and time. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present utility model. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the present utility model. Figure 2 ; Figure 3 This is a partial structural diagram of the present invention; Figure 4 This is a schematic diagram of the heating component of this utility model; Figure 5 This is a schematic diagram of the water spray assembly of this utility model. Figure 1 ; Figure 6 This is a schematic diagram of the water spray assembly of this utility model. Figure 2 ; Figure 7 This is a schematic diagram of the water spray assembly of this utility model. Figure 3 ; Figure 8 This is an enlarged schematic diagram of part B of the water spray component of this utility model; Figure 9 This is a schematic diagram of the bearing plate of this utility model; Figure 10 This is a schematic diagram of the second bearing plate of this utility model; Figure 11 This is an enlarged schematic diagram of section A of the bearing plate of this utility model.

[0020] In the diagram: 1. Moving plate; 2. Water tank; 21. Tank cover; 22. Water inlet pipe; 23. Observation window; 3. Outer shell one; 4. Heating assembly; 41. Outer shell two; 42. Connecting groove; 43. Dustproof plate; 44. Fan; 45. Heating rod; 46. Air outlet pipe; 5. Water spray assembly; 51. Support column; 52. Nozzle pipe one; 53. Corrugated pipe; 54. Water pump; 55. Support plate; 56. Rotation. Components; 561, Connecting plate one; 562, Limiting block; 563, Gear; 564, Rack; 565, Connecting plate two; 566, Electric push rod; 567, Nozzle pipe two; 568, Connecting pipe; 57, Nozzle pipe three; 58, Multi-port pipe; 6, Support plate two; 61, Support plate one; 62, Manifold; 63, Connecting plate three; 631, Water outlet trough; 64, Water outlet pipe; 65, T-block. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1 Please see Figures 1 to 11 This utility model provides a technical solution: a combined DC charging pile testing device, comprising: a movable plate 1, It also includes: water tank 2, the lower end of water tank 2 is fixedly connected to the upper end of movable plate 1, and outer shell 3, the lower end of outer shell 3 is fixedly connected to the upper end of movable plate 1; Heating component 4 is disposed at the upper end of the outer casing 3 and is used to deliver hot air into the inner cavity of the outer casing 3. Water spray assembly 5 is installed in the inner cavity of the outer shell 3. Water spray assembly 5 is used to conduct waterproof testing on the charging pile. The movable plate 1 enables the entire device to move, while the water tank 2 stores water to provide sufficient water for waterproof testing of the water spray assembly 5. The outer shell 3 prevents water from splashing onto surrounding testing equipment during the waterproof test of the charging pile. The heating assembly 4 heats the air and delivers it into the inner cavity of the outer shell 3 for high-temperature environmental testing of the charging pile. The water spray assembly 5 can perform waterproof testing on the charging pile, and when used in conjunction with the heating assembly 4, it can simulate a high-temperature and high-humidity environment within the inner cavity of the outer shell 3, enabling combined testing of the charging pile. This eliminates the need for frequent changes in testing equipment and environment, improving testing efficiency and saving costs and time.

[0023] The heating assembly 4 includes a second outer shell 41 fixedly connected to the upper end of the first outer shell 3. A connecting groove 42 is symmetrically opened on one side of the middle of the second outer shell 41. A fan 44 is provided in the inner cavity of each connecting groove 42. A dustproof plate 43 is fixedly connected to the inner cavity of each connecting groove 42 away from the connecting groove 42. A heating rod 45 is provided in the inner cavity of the second outer shell 41. An air outlet pipe 46 is fixedly connected to the inner cavity of the second outer shell 41 away from the connecting groove 42, and the output end of the air outlet pipe 46 extends through the outer surface of the first outer shell 3 to the inner cavity of the first outer shell 3.

[0024] When a combined test of a charging pile is required, the charging pile to be tested must first be placed in the inner cavity of the outer shell 3. The charging pile is placed on the upper end of the support plate 6, and then the charging pile is fixedly connected to the support plate 6 by the cooperation of the T-block 65 and bolts. Then the charging pile can be tested. When a high-temperature test of the charging pile is required, the controller controls the operation of the heating rod 45 and the fan 44 to run. The fan 44 uses the outside air to deliver outside air to the inner cavity of the outer shell 41. The heating rod 45 heats the air in the inner cavity of the outer shell 41, thereby increasing the air temperature. When the fan 44 draws in outside air, the air can be filtered by the dustproof plate 43 to reduce the dust content in the air. Then the heated air will enter the inner cavity of the outer shell 3 through the air outlet pipe 46, thereby enabling the high-temperature test of the charging pile placed in the inner cavity of the outer shell 3.

[0025] The water spray assembly 5 includes two support columns 51, each with a nozzle pipe 52 fixedly connected to its opposite side. A corrugated pipe 53 is fixedly connected to the lower part of one nozzle pipe 52, and a water pump 54 is fixedly connected to the input end of the corrugated pipe 53. The water pump 54 is located inside the water tank 2 and fixedly connected to the bottom wall of the water tank 2. A support plate 55 is fixedly connected to the upper ends of both support columns 51, and a nozzle pipe 57 is fixedly connected to the lower end of the support plate 55. A rotating assembly 56 is symmetrically fixedly connected to the upper parts of both support columns 51. The rotating assembly 56 includes two connecting plates 561, which are fixedly connected to adjacent support columns 51. A limit block 562 is fixedly connected to the side of one connecting plate 561 away from the other connecting plate 561. A rack 564 is slidably connected to the inner cavity of the limit block 562. 4. A gear 563 is meshed on one side. An electric push rod 566 is provided at the lower end of the rack 564. A connecting plate 565 is fixedly connected to the lower end of the electric push rod 566. The connecting plate 565 is fixedly connected to the adjacent connecting plate 561. One of the connecting plates 561 is fixedly connected to a connecting pipe 568. A nozzle pipe 567 is rotatably connected to the side of the connecting pipe 568 away from the adjacent connecting plate 561. The nozzle pipe 567 is fixedly connected to the gear 563. The connecting plate 561 on the side adjacent to the gear 563 is rotatably connected to the nozzle pipe 567. A multi-port pipe 58 is fixedly connected to the upper part of the nozzle pipe 52. The nozzle pipe 57 on the side close to the connecting pipe 568 is fixedly connected to the multi-port pipe 58 together with the two connecting pipes 568. The lower part of the nozzle pipe 52 on the side adjacent to the corrugated pipe 53 is fixedly connected to the output end of the corrugated pipe 53.

[0026] When a waterproof test is required on the charging pile, the heating component 4 must first be stopped, and the temperature inside the outer casing 3 must be allowed to drop to normal room temperature. Then, the water pump 54 is activated to draw water from the inner cavity of the water tank 2. Through the cooperation of the corrugated pipe 53 and the nozzle pipe 52, the water is delivered to the inner cavity of the nozzle pipe 52, which is fixedly connected to the corrugated pipe 53. The water is then delivered to the inner cavity of the nozzle pipe 57. Through the multi-port pipe 58, the water in the inner cavity of the nozzle pipe 57 is evenly distributed to the inner cavity of the nozzle pipe 567 and the inner cavity of the other nozzle pipe 52, thus creating a multi-angle water spray on the charging pile for multi-directional waterproof testing. To extend the waterproof testing range, the electric push rod 566 is activated. The piston rod output end of the electric push rod 566 drives the rack 564 to slide within the limit block 562, thereby allowing the rack 564 to... The adjacent gear 563 meshes with the nozzle tube 567, causing it to rotate. Since gear 563 is fixedly connected to nozzle tube 567, its rotation causes nozzle tube 567 to rotate, adjusting the spray angle and allowing it to spray water at different heights of the charging pile. During spraying, a motor drives a screw to rotate. Since the screw is threadedly connected to the adjacent support column 51, its rotation moves the support column 51, which in turn moves the entire water spray assembly 5. This improves the device's practicality and versatility. When testing the charging pile in a high-temperature and high-humidity environment, the heating assembly 4 operates simultaneously with the water spray assembly 5, simulating the environment and facilitating further testing of the charging pile.

[0027] Example 2 A support plate 61 is fixedly connected to the bottom wall of the inner cavity of the outer shell 3. A second support plate 6 is fixedly connected to the middle of the upper end of the support plate 61. A third connecting plate 63 is symmetrically fixedly connected to the support plate 61. The inner cavity of the third connecting plate 63 on the same side is slidably connected to the support column 51. Several water outlet grooves 631 are opened on the side of the two third connecting plates 63 that are close to each other, and the water outlet grooves 631 are inclined. A manifold 62 is fixedly connected to one side of the support plate 61. A water outlet pipe 64 is fixedly connected to one side of the manifold 62, and the output end of the water outlet pipe 64 extends through the inner cavity of the outer shell 3 to the outer surface of the outer shell 3. Several T-shaped blocks 65 are set in the inner cavity of the second support plate 6. The charging pile is fixedly connected to the second support plate 6 by bolts. A tank cover 21 is hinged to the upper part of the water tank 2. A water inlet pipe 22 is fixedly connected to one side of the upper part of the water tank 2, and the inner cavity of the water inlet pipe 22 is connected to the inner cavity of the water tank 2. An observation window 23 is opened on one side of the water tank 2.

[0028] During the test, the sprayed water will fall onto the second support plate 6 and the third connecting plate 63. Then, the water will be collected in the groove between the second support plate 6 and the third connecting plate 63 through the water outlet 631. The water will then flow towards the manifold 62. Through the cooperation of the manifold 62 and the water outlet 64, the water can be discharged from the inner cavity of the outer shell 3. During the test, the staff can observe the water level in the inner cavity of the water tank 2 through the observation window 23 and replenish the water in the inner cavity of the water tank 2 through the water inlet pipe 22 to prevent the water level in the inner cavity of the water tank 2 from being too low, causing the water pump 54 to run dry and thus damaging the water pump 54.

[0029] The working principle of this combined DC charging pile testing device will be explained in detail below: like Figures 1 to 11 As shown, when a combined test of a charging pile is required, the charging pile to be tested must first be placed in the inner cavity of the outer shell 3. The charging pile is placed on the upper end of the support plate 6, and then the charging pile is fixedly connected to the support plate 6 by the cooperation of the T-block 65 and the bolts. Then the charging pile can be tested. When a high-temperature test of the charging pile is required, the controller controls the operation of the heating rod 45 and the fan 44 to run. The fan 44 delivers outside air to the inner cavity of the outer shell 41. The heating rod 45 heats the air in the inner cavity of the outer shell 41, thereby increasing the air temperature. When the fan 44 draws in outside air, the air is filtered by the dustproof plate 43 to reduce the dust content in the air. Then the heated air enters the inner cavity of the outer shell 3 through the air outlet pipe 46, thereby enabling the high-temperature test of the charging pile placed in the inner cavity of the outer shell 3. When a waterproof test is required on the charging pile, the heating component 4 must first be stopped, and the temperature inside the outer casing 3 must be allowed to drop to normal room temperature. Then, the water pump 54 is activated to draw water from the inner cavity of the water tank 2. Through the cooperation of the corrugated pipe 53 and the nozzle pipe 52, the water is delivered to the inner cavity of the nozzle pipe 52, which is fixedly connected to the corrugated pipe 53. The water is then delivered to the inner cavity of the nozzle pipe 57. Through the multi-port pipe 58, the water in the inner cavity of the nozzle pipe 57 is evenly distributed to the inner cavity of the nozzle pipe 567 and the inner cavity of the other nozzle pipe 52, thus creating a multi-angle water spray on the charging pile for multi-directional waterproof testing. To extend the waterproof testing range, the electric push rod 566 is activated. The piston rod output end of the electric push rod 566 drives the rack 564 to slide within the limit block 562, thereby allowing the rack 564 to... The adjacent gear 563 meshes with the gear 563, causing it to rotate. Since gear 563 is fixedly connected to nozzle pipe 567, the rotation of gear 563 causes nozzle pipe 567 to rotate, allowing the spray angle of the nozzle on nozzle pipe 567 to be adjusted. This allows nozzle pipe 567 to spray water at different heights of the charging pile. During the water spraying process, the motor drives the screw to rotate. Since the screw is threadedly connected to the adjacent support column 51, the rotation of the screw can drive the support column 51 to move, and then the support column 51 can drive the entire water spray assembly 5 to move, thereby further improving the practicality and versatility of the device. When the charging pile needs to be tested in a high temperature and high humidity environment, the heating assembly 4 can be operated while the water spray assembly 5 is running, thereby simulating a high temperature and high humidity environment and further testing the charging pile. During the test, the sprayed water will fall onto the second support plate 6 and the third connecting plate 63. Then, the water will be collected in the groove between the second support plate 6 and the third connecting plate 63 through the water outlet 631. The water will then flow towards the manifold 62. Through the cooperation of the manifold 62 and the water outlet 64, the water can be discharged from the inner cavity of the outer shell 3. During the test, the staff can observe the water level in the inner cavity of the water tank 2 through the observation window 23 and replenish the water in the inner cavity of the water tank 2 through the water inlet pipe 22 to prevent the water level in the inner cavity of the water tank 2 from being too low, causing the water pump 54 to run dry and thus damaging the water pump 54.

[0030] 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, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A combined DC charging pile testing device, comprising: Mobile board (1), The feature is that it further includes: a water tank (2), the lower end of which is fixedly connected to the upper end of the movable plate (1), and a first outer shell (3), the lower end of which is fixedly connected to the upper end of the movable plate (1); Heating component (4), the heating component (4) is disposed on the upper end of the outer shell (3), the heating component (4) is used to deliver hot air into the inner cavity of the outer shell (3); Water spray assembly (5), the water spray assembly (5) is disposed in the inner cavity of the outer shell (3), the water spray assembly (5) is used to perform waterproof testing on the charging pile; The heating assembly (4) includes a second outer shell (41) fixedly connected to the upper end of the first outer shell (3). A connecting groove (42) is symmetrically opened on one side of the middle of the second outer shell (41). A fan (44) is provided in the inner cavity of each connecting groove (42). A dustproof plate (43) is fixedly connected to the side of the inner cavity of the connecting groove (42) away from the connecting groove (42). A heating rod (45) is provided in the inner cavity of the second outer shell (41). An air outlet pipe (46) is fixedly connected to the side of the second outer shell (41) away from the connecting groove (42), and the output end of the air outlet pipe (46) extends through the outer surface of the first outer shell (3) to the inner cavity of the first outer shell (3). The water spray assembly (5) includes two support columns (51), and each of the two support columns (51) is fixedly connected to a nozzle pipe (52) on its opposite side. A corrugated pipe (53) is fixedly connected to the lower part of one of the nozzle pipes (52). A water pump (54) is fixedly connected to the input end of the corrugated pipe (53). The water pump (54) is located in the inner cavity of the water tank (2) and is fixedly connected to the bottom wall of the inner cavity of the water tank (2). A support plate (55) is fixedly connected to the upper end of the two support columns (51). A nozzle pipe (57) is fixedly connected to the lower end of the support plate (55). A rotating assembly (56) is symmetrically fixedly connected to the upper part of the two support columns (51).

2. The combined DC charging pile testing device according to claim 1, characterized in that: The rotating assembly (56) includes two connecting plates (561), which are fixedly connected to adjacent support columns (51). One of the connecting plates (561) is fixedly connected to a limiting block (562) on the side away from the other connecting plate (561). A rack (564) is slidably connected to the inner cavity of the limiting block (562). A gear (563) is meshed on one side of the rack (564). An electric push rod (566) is provided at the lower end of the rack (564). 6) A connecting plate two (565) is fixedly connected to the lower end. The connecting plate two (565) is fixedly connected to the adjacent connecting plate one (561). One of the connecting plates one (561) is fixedly connected to the connecting pipe (568). The side of the connecting pipe (568) away from the adjacent connecting plate one (561) is rotatably connected to the nozzle pipe two (567). The nozzle pipe two (567) is fixedly connected to the gear (563). The connecting plate one (561) on the side adjacent to the gear (563) is rotatably connected to the nozzle pipe two (567).

3. The combined DC charging pile testing device according to claim 1, characterized in that: The upper part of the nozzle tube 1 (52) is fixedly connected to a multi-port pipe (58). The side of the nozzle tube 3 (57) near the connecting pipe (568) is fixedly connected to the multi-port pipe (58) together with the two connecting pipes (568). The lower part of the nozzle tube 1 (52) adjacent to the corrugated pipe (53) is fixedly connected to the output end of the corrugated pipe (53).

4. The combined DC charging pile testing device according to claim 1, characterized in that: The bottom wall of the inner cavity of the outer shell (3) is fixedly connected to a bearing plate (61). The middle of the upper end of the bearing plate (61) is fixedly connected to a bearing plate (6). The bearing plate (61) is symmetrically fixedly connected to a connecting plate (63). The inner cavity of the connecting plate (63) on the same side is slidably connected to the support column (51). Several water outlet grooves (631) are opened on the side of the two connecting plates (63) that are close to each other, and the water outlet grooves (631) are inclined. A manifold (62) is fixedly connected to one side of the bearing plate (61). A water outlet pipe (64) is fixedly connected to one side of the manifold (62). The output end of the water outlet pipe (64) extends through the inner cavity of the outer shell (3) to the outer surface of the outer shell (3). Several T-shaped blocks (65) are provided in the inner cavity of the bearing plate (6). The T-shaped blocks (65) are fixedly connected to the charging pile and the bearing plate (6) by bolts.

5. The combined DC charging pile testing device according to claim 1, characterized in that: The water tank (2) is hinged to a lid (21) on the upper part. A water inlet pipe (22) is fixedly connected to one side of the upper part of the water tank (2), and the inner cavity of the water inlet pipe (22) is connected to the inner cavity of the water tank (2). An observation window (23) is opened on one side of the water tank (2).

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