A charging pile cable protection strength testing device

Abstract

The present invention relates to the technical field of charging pile cable testing, and specifically to a charging pile cable protection strength testing device, including a testing chamber and a control panel arranged on the testing chamber, a U-shaped plate is arranged inside the testing chamber, a moving component is movably arranged on the U-shaped plate, a supporting plate is symmetrically arranged on the moving component, a locking component is arranged on the supporting plate, and the locking component is used to clamp and lock the cable to be tested, and the locking component includes an L-shaped plate arranged on the side of the supporting plate away from the U-shaped plate, a positioning rod symmetrically arranged on the L-shaped plate, a matching plate arranged on the positioning rod, a locking plate arranged at one end of the matching plate, and a limit plate movably arranged on the side of the matching plate away from the locking plate. The present invention has the characteristic of being able to measure cables of different specifications and sizes in a timely manner, and at the same time, there is no need to worry about slipping between the clamp and the cable during measurement, resulting in inaccurate final test data.

Description

Technical Field

[0001] The present invention relates to the technical field of charging pile cable testing, and in particular to a charging pile cable protection strength testing device. Background Art

[0002] Charging pile cables are usually composed of multiple parts such as conductors, insulation layers, shielding layers, and sheaths. They are important components that connect charging piles and electric vehicles. Their quality and performance are directly related to the safety and efficiency of the charging process. Charging pile cables are an indispensable and important component in the electric vehicle charging process.

[0003] The mechanical strength test of the charging pile cable is usually to verify the durability and reliability of the cable when subjected to mechanical stress such as stretching, bending, and crushing, to ensure that there will be no safety hazards such as breakage and short circuit during long-term use. In actual use, the charging cable is often subject to more tensile force, so the tensile test of the charging cable is particularly important in the entire testing process.

[0004] When testing the charging pile cable, the charging cable needs to be locked to a certain extent. After locking, the insulation layer covering the cable surface is tested by pulling the cable. During the test, the cable is usually clamped with a clamp, and then the distance between the two clamps is changed to achieve the cable test. The cables on the market have different diameters. Therefore, when clamping and fixing the cable, clamps of different sizes are often required to clamp the cable. This not only increases the measurement cost, but also requires staff to spend time selecting suitable clamps when clamping the cable, which results in a lot of time wasted on finding suitable clamps. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a charging pile cable protection strength testing device, which has the characteristics of being able to perform timely measurements on cables of different specifications and sizes. At the same time, during the measurement process, there is no need to worry about slipping between the clamp and the cable during measurement, resulting in inaccurate final test data.

[0006] To achieve the above object, the present invention provides the following technical solutions: a charging pile cable protection strength test device, comprising a test chamber and a control panel arranged on the test chamber, wherein a U-shaped plate is arranged inside the test chamber, a moving component is movably arranged on the U-shaped plate, and the moving component is used to start and move under the action of the control panel, and a support plate is symmetrically arranged on the moving component, and a locking component is arranged on the support plate, and the locking component is used to clamp and lock the cable to be tested;

[0007] The locking assembly includes an L-shaped plate arranged on the side of the support plate away from the U-shaped plate, a positioning rod symmetrically arranged on the L-shaped plate, a matching plate arranged on the positioning rod, a locking plate arranged at one end of the matching plate, and a limiting plate movably arranged on the side of the matching plate away from the locking plate, wherein the locking plate is provided with a latching tooth array inside, the limiting plate is symmetrically provided with sliding grooves, and the limiting plate is provided with a first airbag on the side away from the locking plate;

[0008] A second airbag is arranged on the side of the L-shaped plate away from the first airbag, and the second airbag is connected with the first airbag, a baffle is arranged on the side of the second airbag close to the first airbag, a moving rod is movably arranged on the support plate, a limiting block is arranged on one end of the moving rod close to the second airbag, a first spring is sleeved on the outside of the moving rod, and limiting holes are arranged in an array on the U-shaped plate;

[0009] A spherical extension rod is arranged on one side of the matching plate close to the locking plate, an I-shaped plate is arranged on one end of the spherical extension rod away from the matching plate, a second spring is sleeved on the outside of the spherical extension rod, and a T-shaped groove is opened on one side of the locking plate close to the I-shaped plate.

[0010] Preferably, a charging cable is placed inside the locking plate, a conveying component is provided inside the test chamber, the conveying component is used to transmit the received signal to the control panel, and a circulating water tank is provided inside the test chamber.

[0011] Preferably, the moving assembly includes a motor arranged inside the test chamber, a screw arranged on one side of the motor, and two screws are provided, and also includes a threaded block symmetrically arranged on the screw, and a fixed rod arranged on the side of the threaded block close to the support plate, and the fixed rod is fixedly connected to the support plate.

[0012] Preferably, a mating clamp wheel is provided on the side of the screw away from the motor, a clamp wheel is movably provided on the side of the U-shaped plate close to the mating clamp wheel, a conveying chain is provided outside the mating clamp wheel, and the conveying chain and the clamp wheel are in contact at the same time, and a sealing chamber is provided inside the test chamber.

[0013] Preferably, the conveying assembly includes a carrying plate, a placement plate symmetrically arranged on the carrying plate, pressure sensors symmetrically arranged on opposite sides of the placement plate, and a signal line arranged on one side of the carrying plate.

[0014] Preferably, a water inlet pipe is provided on the circulating water tank, and a nozzle array is provided on the side of the water inlet pipe away from the circulating water tank, and a protection chamber is provided inside the test chamber, and a return pipe is provided on the side of the protection chamber close to the U-shaped plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention uses the locking teeth on the locking plate, the cooperation between the I-shaped plate and the matching plate. When the charging cable is placed on the locking plate, it can automatically shrink according to the diameter of the charging cable, so as to be clamped on the surface of the charging cable. At the same time, when the locking plate is clamped on the charging cable, the provided locking teeth can firmly clamp the charging cable, thereby avoiding the situation that the charging cable and the clamp slip due to insufficient clamping force when the tensile test of the charging cable is performed, so that the result of the entire measurement can be more accurate;

[0017] 2. At the same time, when testing the charging cable, if the strength of the charging cable is insufficient, the fixture will continue to move, causing the screw speed to increase suddenly when the pressure drops suddenly, resulting in an instantaneous increase in the fixture movement speed. The screw and motor in this state for a long time will greatly shorten their service life. Therefore, the pressure sensor can drive the L-shaped plate to continue to move and contact the pressure sensor when the charging cable breaks during the test. The pressure sensor can transmit a signal to the control panel, causing the motor to drive the screw to rotate in the opposite direction, so that the entire test ends early and the L-shaped plate is reset, thereby protecting the entire device during the measurement process and avoiding a significant shortening of its service life;

[0018] 3. When the charging cable is taken out after the test is completed, the locking plate can be opened to both sides. At the same time, the first airbag will transfer the internal gas to the second airbag under the extrusion of the I-shaped plate, so that the second airbag drives the baffle to move, so that the moving rod can be re-inserted into the limit hole, so that the entire component and the test chamber are locked, avoiding the situation that the internal structure shakes when the staff moves the entire device without testing, causing the entire device to be damaged and unable to be used for the next measurement;

[0019] 4. At the same time, the charging cable will encounter rainy weather in actual use. If the insulation protection of the charging cable is not tested in such weather, it is easy to cause the charging cable to have poor protection in actual use. Therefore, the water mist sprayed by the nozzle inside the device can simulate the external rainy environment, so that the entire test result can be closer to the actual use situation. At the same time, the sprayed water can flow back to the circulating water tank through the reflux pipe to achieve multiple uses. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an overall schematic diagram of the device of the present invention.

[0021] Figure 2 It is a schematic diagram of the overall side sectional structure of the device of the present invention.

[0022] Figure 3 It is a schematic diagram of the partial cross-sectional structure inside the device of the present invention.

[0023] Figure 4 It is an enlarged schematic diagram of the local connection structure between the support plate and the locking assembly of the device of the present invention.

[0024] Figure 5 It is a schematic diagram of the structure of the locking assembly of the device of the present invention.

[0025] Figure 6 It is a schematic diagram of the connection structure between the charging cable and the locking component and the conveying component of the device of the present invention.

[0026] Figure 7 The device of the present invention Figure 2 A partial enlarged schematic diagram in the middle.

[0027] Figure 8 The device of the present invention Figure 5 A partial enlarged schematic diagram of point B in the middle.

[0028] Fig. 9 The device of the present invention Figure 6 A partial enlarged schematic diagram of point C in the middle.

[0029] Fig.10 This is a schematic diagram of the structure of the interior of the protective chamber of the device of the present invention being opened.

[0030] In the figure: 1. test chamber; 2. control panel; 3. U-shaped plate; 31. limit hole; 4. moving assembly; 41. motor; 42. screw; 43. threaded block; 44. fixing rod; 45. matching card wheel; 46. clamping card wheel; 47. conveying chain; 48. sealing chamber; 5. support plate; 51. moving rod; 52. limit block; 53. first spring; 6. locking assembly; 61. L-shaped plate; 62. positioning rod; 63. matching plate; 631. spherical extension rod; 632. I-shaped plate; 633. second spring; 64. locking plate; 641. card teeth; 642. T-shaped slot; 65. limit plate; 651. slide slot; 652. first airbag; 653. second airbag; 654. baffle; 7. charging cable; 8. conveying assembly; 81. Loading plate; 82. Placement plate; 83. Pressure sensor; 84. Signal line; 9. Circulating water tank; 91. Water inlet pipe; 92. Nozzle; 93. Protection chamber; 94. Return pipe. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0032] See also Figures 1 to 8 , which is the first embodiment of the present invention, and provides a technical solution: a charging pile cable protection strength test device, comprising a test chamber 1 and a control panel 2 arranged on the test chamber 1, a U-shaped plate 3 is arranged inside the test chamber 1, the U-shaped plate 3 is used to support the moving component 4 during movement, and cooperate with the locking component 6 to perform a tensile test on the charging cable 7 during the movement, and the U-shaped plate 3 is movably provided with a moving component 4, and the moving component 4 is used to start and move under the action of the control panel 2, and the moving component 4 is symmetrically provided with a support plate 5, which is a U-plate connected to a straight plate, and the angles of the two are a right angle, and the support plate 5 is used to fix the L-shaped plate 61 and the fixing rod 44 to facilitate the transmission of the moving power on the threaded block 43, and the support plate 5 is provided with a locking component 6, and the locking component 6 is used to clamp and lock the cable to be tested;

[0033] The locking assembly 6 includes an L-shaped plate 61 arranged on the side of the support plate 5 away from the U-shaped plate 3, and a positioning rod 62 symmetrically arranged on the L-shaped plate 61. The positioning rod 62 is used to limit the rotation of the matching plate 63. When the matching plate 63 rotates, the locking plate 64 can clamp the charging cable 7, so as to facilitate the subsequent tensile test of the charging cable 7. The matching plate 63 arranged on the positioning rod 62 has a certain groove on one side of the matching plate 63, and a clamping rod is arranged inside the groove to engage and slide with the limiting plate 65. The locking plate 64 is arranged at one end of the matching plate 63. The locking plate 64 is used to clamp and lock the placed charging cable 7. After the charging cable 7 is locked, the power is started. The machine 41 causes the screw 42 to rotate, and the rotating screw 42 can transmit power to the support plate 5 through the fixing rod 44, so that the locking plate 64 arranged on the support plate 5 pulls the charging cable 7 for tensile test. The limit plate 65 is movably arranged on the side of the matching plate 63 away from the locking plate 64. The limit plate 65 is in the shape of an open bow, and a heavy block is arranged at the middle connection. The slide groove 651 provided on the limit plate 65 is engaged and slid with the clamping rod on the matching plate 63. After the charging cable 7 is removed, the matching plate 63 can rotate under the action of its own gravity. At the same time, the descent of the limit plate 65 can squeeze the gas inside the first airbag 652 and transfer it to the second airbag 653.

[0034] The locking plate 64 is internally arrayed with latch teeth 641, which are one-way reverse teeth. The latch teeth 641 provided after the locking plate 64 contacts the charging cable 7 can firmly clamp the charging cable 7 to avoid slipping when the charging cable 7 is subjected to a tensile test. The limiting plate 65 is symmetrically provided with sliding grooves 651, which are used to engage and slide with the matching plate 63. The limiting plate 65 is provided with a first air bag 652 on the side away from the locking plate 64. After the locking plate 64 clamps the charging cable 7, the rotation of the matching plate 63 can drive the limiting plate 65 to rise, so that the gas inside the first air bag 652 and the second air bag 653 can be concentrated in the first air bag 652.

[0035] A second airbag 653 is disposed on a side of the L-shaped plate 61 away from the first airbag 652 , and the second airbag 653 is in communication with the first airbag 652 . A baffle 654 is disposed on a side of the second airbag 653 close to the first airbag 652 .

[0036] A moving rod 51 is movably provided on the support plate 5, and the moving rod 51 and the support plate 5 can slide up and down, and the limit block 52 is driven to move synchronously during the sliding process. A limit block 52 is provided at one end of the moving rod 51 close to the second air bag 653, and the limit block 52 is a triangular shape. When the charging cable 7 is placed on the locking plate 64, the second air bag 653 will shrink under the transfer of gas, and the shrinking second air bag 653 will no longer squeeze the limit block 52, so that the moving rod 51 and the limit hole 31 on the support plate 5 are disengaged from the engagement, so that the entire locking assembly 6 can be moved under the action of the moving assembly 4. A first spring 53 is sleeved on the outside of the moving rod 51, and the first spring 53 is used to reset the limit block 52. The U-shaped plate 3 is provided with a limit hole 31 in an array, and the limit hole 31 is used to cooperate with the moving rod 51, so as to realize the locking and releasing of the L-shaped plate 61.

[0037] A spherical extension rod 631 is provided on one side of the matching plate 63 near the locking plate 64. The connection between the spherical extension rod 631 and the matching plate 63 is a spherical connection, which facilitates the spherical extension rod 631 to rotate at any angle. An I-shaped plate 632 is provided on the end of the spherical extension rod 631 away from the matching plate 63. The I-shaped plate 632 cooperates with the T-shaped groove 642 provided on the locking plate 64. When the charging cable 7 is removed after the test is completed, the second spring 633 provided can release power so that the locking plate 64 can To deflect the angle, it is convenient to place the charging cable 7 next time. A second spring 633 is sleeved on the outside of the spherical extension rod 631. The second spring 633 is used to release the stored kinetic energy without external squeezing of the locking plate 64. The released kinetic energy can push the locking plate 64 to deflect the angle. A T-shaped groove 642 is provided on the side of the locking plate 64 close to the I-shaped plate 632. The T-shaped groove 642 is used to facilitate the I-shaped plate 632 to have enough space to support the locking plate 64 when the locking plate 64 is deflected at an angle.

[0038] A charging cable 7 is placed inside the locking plate 64. A conveying assembly 8 is provided inside the test chamber 1. The conveying assembly 8 is used to transmit the received signal to the control panel 2. A circulating water tank 9 is provided inside the test chamber 1. The circulating water tank 9 is used to store water. When necessary, water is sprayed on the surface of the charging cable 7 through a water inlet pipe 91 provided on the circulating water tank 9 to simulate the environment of using the charging cable 7 on rainy days so that the test data can be more accurate and meet actual needs.

[0039] During use, by placing the charging cable 7 on the locking plate 64, the locking plate 64 changes from the initial open opening shape to the charging cable 7 for angular deflection. When the locking plate 64 is angularly deflected, the matching plate 63 can be driven to rotate, and the rotating matching plate 63 can pull the limiting plate 65 to lift upward. Under the lifting of the limiting plate 65, the gas originally stored in the second airbag 653 is transferred to the first airbag 652, and the second airbag 653 is contracted as a whole. Under the contraction of the second airbag 653, the limiting block 52 in the original squeezed state can be raised under the action of the first spring 53, thereby driving the moving rod 51 to disengage from the inside of the limiting hole 31, so that the entire L-shaped plate 61 is out of the locked state, which is convenient for the subsequent start-up of the moving component 4 to drive the support plate 5 to move, thereby synchronously driving the L-shaped plate 61 to move, and the locking plate 64 set on the L-shaped plate 61 is locked and engaged with the charging cable 7, thereby forming a pulling force on the charging cable 7, so that the charging cable 7 can be strength tested. Example 2

[0040] See also Figures 1 to 9 , which is the second embodiment of the present invention, and this embodiment is different from the first embodiment in that:

[0041] The moving component 4 includes a motor 41 arranged inside the test chamber 1, and a wire is arranged on the motor 41. The wire is used to connect the control panel 2 and the motor 41, so that the control panel 2 can accurately control the start and shut down of the motor 41. A screw 42 is arranged on one side of the motor 41, and there are two screws 42. The screw 42 not connected to the motor 41 is arranged on the other side of the U-shaped plate 3 and is rotatably connected to the test chamber 1. The spiral groove on the screw 42 has only one section, which is used to cooperate with the thread block 43. It also includes a thread block 43 symmetrically arranged on the screw 42. The thread block 43 is used to cooperate with the screw groove on the screw 42 and only moves a certain distance. A fixed rod 44 is arranged on the side of the thread block 43 close to the support plate 5, and the fixed rod 44 is fixedly connected to the support plate 5.

[0042] A matching clamping wheel 45 is provided on the side of the screw 42 away from the motor 41. The matching clamping wheel 45 is used to cooperate with the conveying chain 47 so that the two screws 42 can rotate synchronously. A clamping wheel 46 is movably provided on the side of the U-shaped plate 3 close to the matching clamping wheel 45. The clamping wheel 46 is used to prevent slippage between the matching clamping wheel 45 and the conveying chain 47 when the conveying chain 47 transmits power, resulting in a situation where power cannot be transmitted. A conveying chain 47 is provided outside the matching clamping wheel 45, and the conveying chain 47 and the clamping wheel 46 are in contact at the same time. The conveying chain 47 is used to transmit power to drive the other screw 42 to rotate synchronously. A sealing chamber 48 is provided inside the test chamber 1, and the sealing chamber 48 is provided on one side of the matching clamping wheel 45.

[0043] During use, after the charging cable 7 has been completely fixed by the locking plate 64, the control panel 2 will start the motor 41 to drive the screw 42 to rotate. When the screw 42 rotates, the threaded block 43 will transmit power to the support plate 5 through the fixed rod 44. Driven by the support plate 5, the L-shaped plate 61 can drive the locking plate 64 to move synchronously. When the locking plate 64 and the charging cable 7 are in a fixed state, the locking plate 64 can form a pulling force on the charging cable 7. The strength of the charging cable 7 is tested during the pulling process. If the charging cable 7 breaks during the test, the L-shaped plate 61 will move driven by the threaded block 43. When it contacts the conveying component 8, the conveying component 8 can immediately send a power-off signal to the control panel 2, so that the control panel 2 controls the motor 41 to immediately drive the screw 4 2 is rotated in the opposite direction to return to the initial position, and then the charging cable 7 after the test is taken out. When the charging cable 7 is taken out, the second spring 633 arranged outside the spherical extension rod 631 releases the stored kinetic energy, so that the I-shaped plate 632 slides in the T-shaped groove 642 provided on the locking plate 64. The sliding I-shaped plate 632 forms a thrust on the locking plate 64, so that the locking plate 64 deflects an angle. At the same time, the limit plate 65 arranged will descend under the action of its own gravity to squeeze the first air bag 652, so that the gas filled in the first air bag 652 is transferred to the inside of the second air bag 653. When the second air bag 653 expands, the limit block 52 is squeezed to make the moving rod 51 arranged on one side of the limit block 52 descend and be re-inserted into the inside of the limit hole 31, so as to lock the entire L-shaped plate 61 to prevent the L-shaped plate 61 from shaking.

[0044] The remaining structures are the same as those of Example 1. Example 3

[0045] See also Figures 1 to 10 , which is the third embodiment of the present invention. This embodiment is different from the first and second embodiments in that:

[0046] The conveying assembly 8 includes a supporting plate 81, which is used to transmit the signal of the pressure received by the pressure sensor 83; a placement plate 82 symmetrically arranged on the supporting plate 81, on which two symmetrical pressure sensors 83 are installed; and a power-on plate arranged on the back of the pressure sensor 83 is embedded in the placement plate 82 to transmit the pressure signal received by the pressure sensor 83; pressure sensors 83 symmetrically arranged on the opposite sides of the placement plate 82, which are used to transmit information to the control panel 2 in time when the charging cable 7 is broken during testing, so that the motor 41 drives the screw 42 to rotate in the opposite direction, and resets the entire device in the case of reverse rotation; a signal line 84 arranged on one side of the supporting plate 81, which is used to transmit the signal on the pressure sensor 83 to the control panel 2, and at the same time, the signal line 84 and the wires on the motor 41 are neatly arranged with each other and clamped inside the test chamber 1 with a buckle.

[0047] A water inlet pipe 91 is provided on the circulating water tank 9, and a nozzle 92 is arranged in an array on the side of the water inlet pipe 91 away from the circulating water tank 9. The nozzle 92 is used to transport water to the water inlet pipe 91 through a water pump arranged on one side of the circulating water tank 9. The water is sprayed by the nozzle 92 on the water inlet pipe 91 to simulate the use state of the charging cable 7 in the rainy day in the external environment, so that the entire test result can be closer to the actual situation. A protective chamber 93 is arranged inside the test chamber 1. The protective chamber 93 is used to prevent water from falling into the entire test chamber 1 when the nozzle 92 is spraying, and a buckle is installed on the protective chamber 93 to close the entire protective chamber 93 to form a protective cavity after the charging cable 7 is placed. A reflux pipe 94 is arranged on the side of the protective chamber 93 close to the U-shaped plate 3. The reflux pipe 94 is used to return the water collected in the protective chamber 93 to the circulating water tank 9 for recycling.

[0048] During use, when it is necessary to perform a simulated test on the charging cable 7 in a rainy day environment, water can be transported to the inside of the water inlet pipe 91 through a water pump arranged on the circulating water tank 9, and the water can be evenly sprayed on the surface of the charging cable 7 through a nozzle 92 on one side of the water inlet pipe 91. When testing the charging cable 7 contaminated with water vapor, the entire measurement result will be more accurate. After the test is completed, the tested charging cable 7 is taken out by opening the protective compartment 93, and then the motor 41 drives the screw 42 to rotate in the opposite direction through the control panel 2 to return the locking assembly 6 to the initial position, and then the cabinet door of the test compartment 1 is opened to take the charging cable 7 out from the locking plate 64. When the charging cable 7 is taken out, the locking assembly 6 can be automatically reset to restore the initial state, which is convenient for the next test.

[0049] The remaining structures are the same as those of embodiments 1 and 2.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A charging pile cable protection strength testing device, comprising a testing chamber (1) and a control panel (2) arranged on the testing chamber (1), characterized in that: A U-shaped plate (3) is arranged inside the test chamber (1), a moving component (4) is movably arranged on the U-shaped plate (3), the moving component (4) is used to start moving under the action of the control panel (2), a support plate (5) is symmetrically arranged on the moving component (4), a locking component (6) is arranged on the support plate (5), and the locking component (6) is used to clamp and lock the cable to be tested; The locking assembly (6) comprises an L-shaped plate (61) arranged on a side of the support plate (5) away from the U-shaped plate (3), a positioning rod (62) symmetrically arranged on the L-shaped plate (61), a matching plate (63) arranged on the positioning rod (62), a locking plate (64) arranged at one end of the matching plate (63), and a limiting plate (65) movably arranged on a side of the matching plate (63) away from the locking plate (64). The locking plate (64) is provided with a latching tooth array inside, the limiting plate (65) is symmetrically provided with sliding grooves (651), and the limiting plate (65) is provided with a first air bag (652) on a side away from the locking plate (64); A second airbag (653) is arranged on the side of the L-shaped plate (61) away from the first airbag (652), and the second airbag (653) and the first airbag (652) are connected to each other; a baffle (654) is arranged on the side of the second airbag (653) close to the first airbag (652); a moving rod (51) is movably arranged on the support plate (5); a limiting block (52) is arranged on one end of the moving rod (51) close to the second airbag (653); a first spring (53) is sleeved on the outside of the moving rod (51); and limiting holes (31) are arranged in an array on the U-shaped plate (3); A spherical extension rod (631) is provided on one side of the matching plate (63) close to the locking plate (64); an I-shaped plate (632) is provided on one end of the spherical extension rod (631) away from the matching plate (63); a second spring (633) is sleeved on the outside of the spherical extension rod (631); and a T-shaped groove (642) is provided on one side of the locking plate (64) close to the I-shaped plate (632).

2. A charging pile cable protection strength testing device according to claim 1, characterized in that: A charging cable (7) is placed inside the locking plate (64), a conveying assembly (8) is arranged inside the test chamber (1), the conveying assembly (8) is used to transmit received signals to the control panel (2), and a circulating water tank (9) is arranged inside the test chamber (1).

3. A charging pile cable protection strength testing device according to claim 1, characterized in that: The moving assembly (4) comprises a motor (41) arranged inside the test chamber (1), a screw rod (42) arranged on one side of the motor (41), wherein two screw rods (42) are provided, a threaded block (43) symmetrically arranged on the screw rod (42), and a fixed rod (44) arranged on a side of the threaded block (43) close to the support plate (5), wherein the fixed rod (44) is fixedly connected to the support plate (5).

4. A charging pile cable protection strength testing device according to claim 3, characterized in that: A matching clamping wheel (45) is provided on the side of the screw rod (42) away from the motor (41); a pressing clamping wheel (46) is movably provided on the side of the U-shaped plate (3) close to the matching clamping wheel (45); a conveying chain (47) is provided outside the matching clamping wheel (45), and the conveying chain (47) and the pressing clamping wheel (46) are in contact at the same time; and a sealing chamber (48) is provided inside the test chamber (1).

5. A charging pile cable protection strength testing device according to claim 2, characterized in that: The conveying assembly (8) comprises a carrying plate (81), a placement plate (82) symmetrically arranged on the carrying plate (81), a pressure sensor (83) symmetrically arranged on the opposite side of the placement plate (82), and a signal line (84) arranged on one side of the carrying plate (81).

6. A charging pile cable protection strength testing device according to claim 2, characterized in that: The circulating water tank (9) is provided with a water inlet pipe (91), and a nozzle (92) is arranged in an array on a side of the water inlet pipe (91) away from the circulating water tank (9). A protection chamber (93) is arranged inside the test chamber (1), and a return pipe (94) is arranged on a side of the protection chamber (93) close to the U-shaped plate (3).

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