Device for testing installation firmness degree of charging cable in charging pile

Abstract

The utility model relates to a device for testing the installation firmness degree of a charging cable in a charging pile, and the device comprises a support which is provided with two vertical rods, the top end of each vertical rod is provided with a pulley, and a to-be-tested charging cable is wound around the tops of the two pulleys during testing; the force application unit comprises a tray and a plurality of weights placed in the tray, and the tray is fixedly connected with the front end of the charging cable to be tested; the lifting unit is fixedly installed on the support and located at the bottom of the tray; when the lifting unit ascends, the tray is lifted by the top of the lifting unit, and when the lifting unit descends, the lifting unit is separated from the tray. The device provided by the utility model can automatically complete hundreds of tension tests, is higher in test efficiency, is suitable for testing charging cables of different types of charging piles, and is accurate in test result.

Description

TECHNICAL FIELD

[0001] The utility model relates to charging pile detection field, concretely relates to a device for testing charging cable installation firmness degree in charging pile. BACKGROUND

[0002] With the popularity of electric vehicles, the distribution of charging piles is also more and more extensive. In order to ensure the safety of charging piles during charging, charging piles must go through a series of tests before leaving the factory, one of which is the charging cable installation firmness test. According to the standard of International Electrotechnical Commission IEC, the so-called installation firmness test refers to the detection of whether there is a large displacement between the charging cable and the charging pile after the charging cable bears repeated tension. If there is a large displacement, it means that the connection buckle quality between the charging cable and the charging pile is a problem or not installed firmly, which may exist safety hazards. There is no automatic detection device in the prior art that can complete the above test, therefore, there is an urgent need in the field for a device suitable for the test. SUMMARY

[0003] The purpose of the utility model is to overcome the defects of the prior art and provide a device for testing the installation firmness of the charging cable in the charging pile.

[0004] In order to achieve the purpose of the utility model, the present application provides the following technical scheme.

[0005] In the first aspect, the present application provides a device for testing the installation firmness of the charging cable in the charging pile, which comprises:

[0006] Support: two vertical rods are provided on the support, and each vertical rod is provided with a pulley at the top end, and the tested charging cable is wound around the top of the two pulleys during testing;

[0007] Force applying unit: including a tray and a plurality of weights placed in the tray, the tray is fixedly connected with the front end of the tested charging cable;

[0008] Lifting unit: fixedly installed on the support, and the lifting unit is located at the bottom of the tray; when the lifting unit rises, the top of the lifting unit lifts the tray, and when the lifting unit descends, the lifting unit separates from the tray.

[0009] When testing, the to-be-tested charging pile is placed stably, and then the to-be-tested charging cable is wound over the top of the two pulleys. Two pulleys are used because the IEC standard stipulates that the front end of the to-be-tested charging cable should form an angle of 90°±10° during measurement. Therefore, the two pulleys can ensure the test requirements and make the measurement result more accurate. Then, the force applying unit is fixed at the front end of the to-be-tested charging cable, the weight of the tray is required to be fixed, and the weight of the entire force applying unit is constant during the test process. At the same time, according to the test requirements, the weight of the charging cable can be increased or decreased to realize the test of different types of charging cables. Then, marks are made in advance at the connection between the charging cable and the charging pile, and then the lifting unit is started to lift the tray every certain period of time. In the case of not being lifted, the to-be-tested charging cable bears the weight of the force applying unit, and in the case of being lifted, it is not under stress. After a period of stress, the force applying unit is removed from the front end of the to-be-tested charging cable, and then it is checked whether the previous marks have been displaced. If the displacement is less than the standard value, it indicates that the connection quality between the charging pile and the charging cable is qualified, otherwise it is unqualified.

[0010] In an embodiment of the first aspect, the front end of the support is provided with a horizontal blocking frame, and the bottom surface of the front end of the horizontal blocking frame is provided with a first pulley. The to-be-tested charging cable is wound over the bottom of the first pulley and then over the top of the two pulleys at the top end of the vertical rod.

[0011] In an embodiment of the first aspect, the horizontal blocking frame comprises a fixed frame and a movable frame. The fixed frame is mounted on the support, the movable frame is slidingly mounted at the front end of the fixed frame, the first pulley is fixedly mounted at the bottom surface of the front end of the movable frame, and the movable frame and the fixed frame are fixed by fastening bolts.

[0012] In an embodiment of the first aspect, the support is provided with a vertical sliding rail, the fixed frame is slidingly mounted in the sliding rail and is fixed by fastening bolts.

[0013] In the present application, the purpose of the horizontal blocking frame is to adapt to different types of charging piles. Because different charging piles have different installation heights of the charging cable and different lengths of the charging cable, the first pulley is provided to ensure that the front end of the to-be-tested charging cable forms an angle of 90°, so that the test result is more accurate. The fixed frame and the movable frame are provided, and the height of the fixed frame in the vertical direction is adjustable, both of which are to adapt to different types of charging piles.

[0014] In an embodiment of the first aspect, the lifting unit comprises a lifting cylinder and a PLC controller. The lifting cylinder is fixedly mounted at the bottom of the tray, and the PLC controller is used to control the operation of the lifting cylinder.

[0015] In an implementation form of the first aspect, the device is provided with a CCD camera, the CCD camera is mounted on the bracket, and a lens of the CCD camera is aligned with a connection between the to-be-tested charging cable and the to-be-tested charging pile.

[0016] In the present application, the displacement of the mark can be read by manual measurement, and more preferably by a CCD camera, which can record the displacement of the mark in real time and finally measure the displacement distance of the mark. In addition, if the connection of the charging pile and the charging cable is unqualified, the CCD camera can also send a signal to the controller in time to stop the test.

[0017] Compared with the prior art, the device has the following beneficial effects:

[0018] (1) After the operator places the to-be-tested charging pile and the to-be-tested charging cable in place, the subsequent tens of times of pull force tests can be automatically completed, and the test efficiency is higher.

[0019] (2) The device is suitable for testing different models of charging piles, and the test results are accurate. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the device of the present application;

[0021] Figure 2 is a schematic diagram of the side view structure of the device of the present application.

[0022] In the drawings, 1 is a bracket, 2 is a horizontal blocking frame, 3 is a pulley, 4 is a first pulley, 5 is a sliding rail, 6 is a force applying unit, 7 is a lifting cylinder, 8 is a fixed frame, 9 is a movable frame, 10 is a CCD camera, 11 is a lifting platform, 12 is a charging cable, and 13 is a charging pile. DETAILED DESCRIPTION

[0023] Unless otherwise defined, technical or scientific terms used in the present specification and claims should be understood as having the same meaning as those commonly understood by one of ordinary skill in the art to which the present application belongs. All numerical values recited herein, from the lowest value to the highest value, refer to all numerical values between the lowest value and the highest value, provided that the difference between the lowest value and the highest value is two or more units.

[0024] The specific embodiments of the present application will be described below. It should be noted that, in the specific description of these embodiments, the present specification cannot describe all the features of the actual embodiments in detail. Those skilled in the art can modify and replace the embodiments of the present application without departing from the spirit and scope of the present application, and the resulting embodiments are also within the scope of protection of the present application. Example

[0025] The embodiments of this utility model will be described in detail below. These embodiments are implemented based on the technical solution of this utility model and provide detailed implementation methods and specific operation processes. However, the protection scope of this utility model is not limited to the following embodiments. Example

[0026] A device for testing the secure installation of charging cables in charging piles, the structure of which is as follows: Figure 1 , Figure 2 As shown, it includes a support 1, which is mounted on a lifting platform 11. The support 1 is constructed from multiple steel members with slide rails 5, which are fixed together by fastening bolts. A horizontal stop 2 is provided at the front end of the support 1. The horizontal stop 2 can slide up and down along the column at the front end of the support 1 to adjust the height, and is then fixed by fastening bolts. The horizontal stop 2 includes a fixed frame 8 and a movable frame 9. The fixed frame 8 is fixedly connected to the support 1 by fastening bolts, and the movable frame 9 is slidably connected to the front end of the fixed frame 8 and fixed by fastening bolts. A first pulley 4 is provided at the bottom of the front end of the movable frame 9. Two pulleys 3 of approximately equal height are provided at the top of the support 1. The charging cable 12 to be tested passes sequentially around the bottom of the first pulley 4 and the top of the two pulleys 3, and then connects to the force application unit 6. The force application unit 6 includes a tray and several weights placed in the tray. The total weight of the weights can be increased or decreased according to different testing requirements. At the bottom of the tray, a lifting cylinder 7 is installed on the bracket 1. When the lifting cylinder 7 rises, it can support the tray. When the lifting cylinder 7 descends, it separates from the tray. The lifting cylinder 7 is controlled by a PLC controller. A CCD camera 10 is also installed on the bracket 1 for real-time monitoring of the connection between the charging pile 13 and the charging cable 12.

[0027] The working principle of the above device is as follows:

[0028] (1) After placing the charging pile 13 to be tested stably, the charging cable 12 to be tested is passed around the bottom of the first pulley 4 and the top of the two pulleys 3 in sequence, and then a mark is made at the connection between the charging pile 13 and the charging cable 12.

[0029] (2) Fix the force application unit 6 to the front end of the charging cable 12 to be tested, and make the charging cable 12 taut. By adding or removing weights, make the total weight of the entire force application unit 6 500N (for example only, different total weights are selected according to different models of charging piles 13).

[0030] (3) Start the lifting unit, so that the lifting unit lifts the tray every 1 min, and repeats more than 100 times, the displacement value of the mark is measured by the CCD camera 10, if the displacement is less than 4.8 mm, it indicates that the connection quality between the charging pile 13 and the charging cable 12 is qualified, if the displacement is greater than 4.8 mm, it is unqualified.

[0031] The above description of the embodiments is to facilitate those of ordinary skill in the art to understand and apply the present application. Those skilled in the art can easily make various modifications to these embodiments, and apply the general principles described herein to other embodiments without having to pay creative labor. Therefore, the present application is not limited to the embodiments herein, and the improvements and modifications made by those skilled in the art without departing from the scope and spirit of the present application are within the scope of the present application.

Claims

1. A device for testing the degree of installation of a charging cable in a charging pile, characterized in that, The device comprises: a support, two vertical rods are arranged on the support, a pulley is arranged at the top end of each vertical rod, and the to-be-tested charging cable is wound around the top of the two pulleys during testing; a force applying unit, comprising a tray and a plurality of weights placed in the tray, the tray is fixedly connected with the front end of the to-be-tested charging cable; a lifting unit, fixedly installed on the support, and located at the bottom of the tray, when the lifting unit rises, the top of the lifting unit lifts the tray, and when the lifting unit descends, the lifting unit is separated from the tray.

2. The device for testing the degree of installation of a charging cable in a charging station according to claim 1, characterized in that, The front end of the support is provided with a horizontal blocking frame, the bottom surface of the front end of the horizontal blocking frame is provided with a first pulley, and the to-be-tested charging cable is wound around the bottom of the first pulley and then wound around the top of the two pulleys at the top end of the vertical rods.

3. The device for testing the degree of installation of a charging cable in a charging station according to claim 2, characterized in that, The horizontal blocking frame comprises a fixed frame and a movable frame, the fixed frame is installed on the support, the movable frame is slidingly installed at the front end of the fixed frame, the first pulley is fixedly installed at the bottom surface of the front end of the movable frame, and the movable frame and the fixed frame are fixed by fastening bolts.

4. The device for testing the degree of installation of a charging cable in a charging station according to claim 3, characterized in that, The support is provided with a vertical sliding rail, the fixed frame is slidingly installed in the sliding rail and fixed by fastening bolts.

5. The device for testing the degree of installation of a charging cable in a charging station according to claim 1, wherein, The lifting unit comprises a lifting cylinder and a PLC controller, the lifting cylinder is fixedly installed at the bottom of the tray, and the PLC controller is used to control the operation of the lifting cylinder.

6. The device for testing the degree of installation of a charging cable in a charging station according to claim 1, wherein, The device is provided with a CCD camera, the CCD camera is installed on the support, and the lens of the CCD camera is aligned with the connection between the to-be-tested charging cable and the to-be-tested charging pile.

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