Mechanical load test device for charging interface

Abstract

The utility model discloses a mechanical load test device for a charging interface, which comprises a case with an inner cavity and a machine table connected to the side wall of the lower part of the case, a jig is rotatably arranged on the side wall of the upper part of the case, and a charging gun with a cable is mounted on the jig. A driving mechanism connected with the jig is arranged on the inner wall of the machine box, a lifting table is arranged on the top face of the machine table in a lifting mode, and a force application assembly and a clamping assembly connected to the upper portion of the force application assembly are placed on the lifting table. According to the utility model, the charging gun is installed through the clamp, a charging interface load test is carried out on the charging gun through the force application assembly after the cable of the charging gun is clamped by the clamping assembly, and the cable can be stably fixed by the clamping assembly, so that the cable is not easy to fall off, safety accidents are avoided, and the test efficiency is improved.

Description

A charging interface mechanical load testing device Technical Field

[0001] This utility model relates to the field of charging interface testing technology, specifically a charging interface mechanical load testing device. Background Technology

[0002] With the increasing popularity of electric vehicles, the safety of charging stations, as an important supporting facility, is receiving growing attention. The charging interface, as a key connection component between the charging station and the electric vehicle, directly affects the safety and reliability of the charging process. To ensure the safe operation of charging stations, charging interface load testing devices have emerged, becoming an important tool for charging station safety testing.

[0003] The purpose of a charging interface load test device is to verify that the structure of the charging interface should allow for easy insertion and removal of the charging gun, and should prevent the charging gun from coming out of the socket during normal use; it should also verify whether the maximum force required to remove the charging gun from the appliance socket is within the range specified in the standard. However, existing charging interface load test devices suffer from problems such as difficulty in securing the charging gun cable during testing, unstable installation, and a tendency to detach during testing, leading to safety accidents and low testing efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a mechanical load testing device for charging interfaces, which can stably fix the cable, making it less likely to fall off, avoiding safety accidents, and improving testing efficiency, thereby solving the problems of difficult-to-fix and unstable installation of charging gun cables mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A mechanical load testing device for a charging interface includes a chassis with an inner cavity and a machine platform connected to the lower side wall of the chassis. A fixture is rotatably mounted on the upper side wall of the chassis, and a charging gun with a cable is mounted on the fixture. A drive mechanism connected to the fixture is provided on the inner wall of the chassis. A lifting platform is provided on the top surface of the machine platform, and a force-applying component and a clamping component connected to the upper part of the force-applying component are placed on the lifting platform.

[0007] Preferably, the fixture includes a base and a rotating disk. The base is fixedly mounted on the side wall of the chassis, and a central hole is provided in the middle of the base. The rotating disk is rotatably mounted in the central hole of the base.

[0008] Preferably, one end of the rotating disk extends outward relative to the base, and a through hole coaxial with the central hole is provided in the center of the rotating disk.

[0009] Preferably, the driving mechanism is a servo motor, and the output shaft of the servo motor is connected to the rotating disk through a gear transmission structure to drive the rotating disk to rotate.

[0010] Preferably, a graduated disc is fitted around the rotating disk and fixed on the base. A pointer adapted to the graduated disc is provided on the outer circumference of the rotating disk. A photoelectric limiting device adapted to the pointer is provided on the base. The photoelectric limiting device is electrically connected to the driving mechanism.

[0011] Preferably, the fixture includes a fixing plate and a test socket. The fixing plate is connected to the end face of one end of the rotating disk. A through hole coaxial with the through hole is opened in the middle of the fixing plate. One end of the test socket is connected to the fixing plate, and the other end extends through the through hole into the through hole and the central hole. The head of the charging gun is inserted into the test socket.

[0012] Preferably, the base is connected to a cylindrical body coaxially arranged with the central hole at one end relative to the rotating disk, the end of the cylindrical body away from the base is connected to the side wall of the chassis, and one end of the test socket extends into the cylindrical body.

[0013] Preferably, the force-applying component includes a column, a main weight, and a secondary weight. The column is erected on the lifting platform, and several main weights and secondary weights are stacked sequentially on the column. The weight of the secondary weight is one-tenth of the weight of the main weight.

[0014] Preferably, the clamping assembly includes a clamping cylinder, clamping blocks, and screws. The bottom end of the clamping cylinder is connected to the top end of the column, and the top end of the clamping cylinder has a top opening. There are two clamping blocks, which are relatively and movably arranged on the inner wall of the clamping cylinder. There are two screws, which pass through the clamping cylinder and are connected to the corresponding clamping blocks.

[0015] Preferably, the two clamping blocks have arc-shaped grooves adapted to the cable on their opposite surfaces; the clamping cylinder has two opposite side openings on its side wall.

[0016] Compared with the prior art, the beneficial effects of this utility model are: the charging gun is installed by a fixture, and after the charging gun cable is clamped by the clamping component, the charging interface load test is performed on the charging gun by the force application component. During this process, the clamping component can stably fix the cable, making it less likely to fall off, avoiding safety accidents, and improving test efficiency; in addition, the rotating fixture can simulate the force conditions of the charging gun under different conditions, improving the test accuracy. Attached Figure Description

[0017] Figure 1 is a perspective view of a mechanical load testing device for a charging interface according to this utility model;

[0018] Figure 2 is a partial structural schematic diagram of the clamp of this utility model;

[0019] Figure 3 is a front view of a mechanical load testing device for a charging interface according to this utility model;

[0020] Figure 4 is a cross-sectional view of section AA in Figure 3;

[0021] Figure 5 is a perspective view of the force-applying component and the clamping component of this utility model;

[0022] Figure 6 is an exploded view of the fixture of this utility model.

[0023] In the diagram: 1. Chassis; 2. Machine base; 3. Fixture; 31. Base; 311. Photoelectric limit device; 32. Rotary disk; 321. Pointer; 33. Scale disk; 34. Fixing plate; 35. Test socket; 36. Cylinder; 4. Charging gun; 41. Cable; 5. Drive mechanism; 6. Lifting platform; 7. Force application component; 71. Column; 72. Main weight; 73. Secondary weight; 8. Clamping component; 81. Clamping cylinder; 811. Top opening; 812. Side opening; 82. Clamping block; 83. Screw; 9. Lifting mechanism; 91. Cylinder; 92. Guide rod; 93. Bracket. Detailed Implementation

[0024] 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.

[0025] Please refer to Figures 1-3. A charging interface mechanical load testing device includes a housing 1 with an inner cavity and a machine platform 2 connected to the lower side wall of the housing 1. A fixture 3 is rotatably mounted on the upper side wall of the housing 1. (See Figure 3) A charging gun 4 with a cable 41 is mounted on the fixture 3. A drive mechanism 5 connected to the fixture 3 is provided on the inner wall of the housing 1 for driving the fixture 3 to rotate. A lifting platform 6 is provided on the top surface of the machine platform 2, and a force application component 7 and a clamping component 8 connected to the upper part of the force application component 7 are placed on the lifting platform 6.

[0026] This utility model uses a clamp to install the charging gun 4, and after the clamping component 8 clamps the cable 41 of the charging gun 4, the force application component 7 performs a charging interface load test on the charging gun 4. During this process, the clamping component 8 can stably fix the cable 41, making it less likely to fall off, avoiding safety accidents, and improving test efficiency. It also uses a rotatable fixture 3 to simulate the force conditions of the charging gun 4 under different conditions, improving the accuracy of the test.

[0027] Referring to Figure 2, the fixture 3 includes a base 31 and a rotating disk 32. The base 31 is fixedly mounted on the side wall of the chassis 1, and a central hole is formed in the middle of the base 31. The rotating disk 32 is rotatably mounted in the central hole of the base 31. One end of the rotating disk 32 extends outward relative to the base 31, and a through hole coaxial with the central hole is formed in the center of the rotating disk 32. In this embodiment, the charging gun 4 is mounted on the rotating disk 32, which can rotate arbitrarily within the range of 0 to 360°, ensuring the testing accuracy and flexibility of the rotating disk 32 at different angles. Referring to Figures 4 and 6, the driving mechanism 5 is a servo motor. The output shaft of the servo motor is connected to the rotating disk 32 through a gear transmission structure to drive the rotating disk 32 to rotate. The gear transmission structure adopts existing technology, and its structure will not be described in detail here. The servo motor can provide high-precision speed control and position control, ensuring the smoothness and repeatability of the testing process. A fan is provided on the end wall of the chassis 1 for heat dissipation inside the chassis 1.

[0028] Referring to Figures 2 and 6, a graduated disc 33 fixed to a base 31 is fitted around the rotating disk 32. A pointer 321 adapted to the graduated disc 33 is provided on the outer circumference of the rotating disk 32 for accurately adjusting the rotation angle of the rotating disk 32. A photoelectric limiting device 311 adapted to the pointer 321 is provided on the base 31. The photoelectric limiting device 311 is electrically connected to the drive mechanism 5. When the pointer 321 rotates to the position of the photoelectric limiting device 311, the drive mechanism 5 stops driving, thus playing a positioning role.

[0029] The fixture 3 includes a fixing plate 34 and a test socket 35. The fixing plate 34 is connected to the end face of one of the extended ends of the rotating disk 32. A through hole coaxial with the through hole is formed in the middle of the fixing plate 34. One end of the test socket 35 is connected to the fixing plate 34, and the other end extends through the through hole into the through hole and the central hole. The head of the charging gun 4 is inserted into the test socket 35. The fixing plate 34 has several sets of circumferentially distributed mounting holes for mounting test sockets 35 of various sizes.

[0030] In this embodiment, please refer to Figures 4 and 6. The base 31 is connected to a cylindrical body 36 coaxially arranged with the center hole at one end relative to the rotating disk 32. The end of the cylindrical body 36 away from the base 31 is connected to the side wall of the chassis 1. One end of the test socket 35 extends into the cylindrical body 36.

[0031] Referring to Figures 1 and 5, the force-applying component 7 includes a column 71, a main weight 72, and a secondary weight 73. The column 71 is erected on the lifting platform 6. Several main weights 72 and secondary weights 73 are provided, and their weights can be set according to actual needs. The main weights 72 and secondary weights 73 are stacked sequentially on the column 71. In this embodiment, the weight of the secondary weight 73 is one-tenth the weight of the main weight 72, ensuring the accuracy and flexibility of force application.

[0032] Please refer to Figure 5. The clamping assembly 8 includes a clamping cylinder 81, clamping blocks 82, and screws 83. The bottom end of the clamping cylinder 81 is connected to the top end of the column 71. The top end of the clamping cylinder 81 has a top opening 811. There are two clamping blocks 82, which are movably disposed on the inner wall of the clamping cylinder 81. There are two screws 83, which pass through the clamping cylinder 81 and are connected to the corresponding clamping blocks 82. In this embodiment, the inner wall of the clamping cylinder 81 has protruding slide rails that are opposite to each other. The clamping blocks 82 are provided with slide grooves that are adapted to the slide rails. The slider moves circumferentially along the slide rails through the slide grooves. The two clamping blocks 82 have arc-shaped grooves that are adapted to the cable 41 on their opposite surfaces. The side wall of the clamping cylinder 81 has two opposite side openings 812. The cable 41 can be quickly pulled into the clamping cylinder 81 from the top opening 811 through the side openings 812, improving the testing efficiency.

[0033] Please refer to Figure 4. The machine base 2 has an internal accommodating cavity, within which a lifting mechanism 9 is installed to drive the lifting platform 6 to rise and fall. The lifting mechanism 9 includes two cylinders 91 positioned opposite each other within the accommodating cavity. The piston rods of the two cylinders 91 pass upwards through the top surface of the machine base 2 and connect to the bottom surface of the lifting platform 6. The lifting mechanism 9 also includes several guide rods 92 positioned on the bottom surface of the lifting platform 6 and extending downwards through the top surface of the machine base 2, as well as brackets 93 connected to the bottom ends of the guide rods 92. The guide rods 92 guide the lifting and positioning. In this embodiment, there are four guide rods 92, positioned at the four corners of the bottom surface of the lifting platform 6. The machine base 2 and the chassis 1 are equipped with swivel casters at their bottoms.

[0034] In this embodiment, a charging interface mechanical load testing device includes a control system. The control system includes a touch screen and a programmable controller electrically connected to the touch screen, which facilitates user parameter setting and test control. For example, parameters such as rotation angle, rotation count, force application cycle count, force application timing, interval timing, forward voltage, reverse voltage, and test count can be set to ensure the stability and reliability of the test process. Test formulas can be stored and recalled. The control system is also connected to switches for start, stop, and alarm.

[0035] The working principle of the mechanical load testing device for charging interfaces of this utility model is as follows:

[0036] A suitable number of main weights 72 and auxiliary weights 73 are placed on the column 71. Two cylinders 91 drive the lifting platform 6 to rise to a preset height and then stop. Then, the head of the charging gun 4 is inserted into the test socket 35. A section of the cable 41 of the charging gun 4 is bent and inserted into the clamp 81 from the top opening 811 of the clamp. Then, the two screws 83 are rotated to make the two clamps 82 cooperate to clamp the cable 41. Subsequently, the lifting platform 6 descends, and the bottom of the main weight 72 is separated from the top surface of the lifting platform 6, so that the charging gun 4 bears the force of the main weight 72 and the auxiliary weight 73. The force application timer starts. When the preset time is reached, the lifting platform 6 rises to support the main weight 72, thus completing one force application test. During the test, the rotation angle of the rotating disk 32 can be pre-adjusted by the drive mechanism 5 to test the force on the charging gun 4 at different angles.

[0037] 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 mechanical load testing device for a charging interface, comprising a housing (1) having an inner cavity and a machine platform (2) connected to the lower side wall of the housing (1), characterized in that: A fixture (3) is rotatably mounted on the upper side wall of the chassis (1). A charging gun (4) with a cable (41) is mounted on the fixture (3). A drive mechanism (5) connected to the fixture (3) is provided on the inner wall of the chassis (1). A lifting platform (6) is provided on the top surface of the machine base (2). A force application component (7) and a clamping component (8) connected to the upper part of the force application component (7) are placed on the lifting platform (6).

2. The charging interface mechanical load testing device according to claim 1, characterized in that: The fixture (3) includes a base (31) and a rotating disk (32). The base (31) is fixedly mounted on the side wall of the chassis (1). A central hole is provided in the middle of the base (31). The rotating disk (32) is rotatably mounted in the central hole of the base (31).

3. The charging interface mechanical load testing device according to claim 2, characterized in that: One end of the rotating disk (32) extends outward relative to the base (31), and a through hole coaxial with the center hole is provided in the center of the rotating disk (32).

4. The charging interface mechanical load testing device according to claim 2, characterized in that: The driving mechanism (5) is a servo motor. The output shaft of the servo motor is connected to the rotating disk (32) through a gear transmission structure, which is used to drive the rotating disk (32) to rotate.

5. The charging interface mechanical load testing device according to claim 4, characterized in that: The rotating disk (32) is surrounded by a graduated disk (33) fixed on the base (31). The outer circumference of the rotating disk (32) is provided with a pointer (321) adapted to the graduated disk (33). The base (31) is provided with a photoelectric limiting device (311) adapted to the pointer (321). The photoelectric limiting device (311) is electrically connected to the driving mechanism (5).

6. The charging interface mechanical load testing device according to claim 3, characterized in that: The fixture (3) includes a fixing plate (34) and a test socket (35). The fixing plate (34) is connected to the end face of the extended end of the rotating disk (32). A through hole coaxial with the through hole is opened in the middle of the fixing plate (34). One end of the test socket (35) is connected to the fixing plate (34), and the other end extends through the through hole into the through hole and the central hole. The head of the charging gun (4) is inserted into the test socket (35).

7. The charging interface mechanical load testing device according to claim 6, characterized in that: The base (31) is connected to a cylindrical body (36) coaxially arranged with the center hole at one end relative to the rotating disk (32). The end of the cylindrical body (36) away from the base (31) is connected to the side wall of the chassis (1). One end of the test socket (35) extends into the cylindrical body (36).

8. The charging interface mechanical load testing device according to any one of claims 1-7, characterized in that: The force-applying component (7) includes a column (71), a main weight (72), and a secondary weight (73). The column (71) is erected on the lifting platform (6). Several main weights (72) and secondary weights (73) are arranged and stacked on the column (71) in sequence. The weight of the secondary weight (73) is one-tenth of the weight of the main weight (72).

9. The charging interface mechanical load testing device according to claim 8, characterized in that: The clamping assembly (8) includes a clamping cylinder (81), clamping blocks (82) and screws (83). The bottom end of the clamping cylinder (81) is connected to the top end of the column (71). The top end of the clamping cylinder (81) has a top opening (811). There are two clamping blocks (82), which are arranged relative to each other and movable on the inner wall of the clamping cylinder (81). There are two screws (83), which pass through the clamping cylinder (81) and are connected to the corresponding clamping blocks (82).

10. The charging interface mechanical load testing device according to claim 9, characterized in that: The two clamping blocks (82) have arc-shaped grooves on their opposite surfaces that are adapted to the cable (41); the side wall of the clamping cylinder (81) has two opposite side openings (812).

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