Device for testing maximum current-carrying capacity of charging pile cable

Abstract

The utility model discloses a device for testing the maximum current-carrying capacity of a charging pile cable, and the device comprises a device body, the top end of the device body is fixedly connected with a supporting plate, the middle part of the supporting plate is provided with a sliding groove, the back surface of the supporting plate is fixedly connected with a connecting frame, and the interior of the connecting frame is rotatably connected with a rotating shaft. The end, away from the supporting plate, of the rotating shaft is fixedly connected with a rotating disc, a clamping groove is formed in the surface of the rotating disc, a clamping block is arranged in the clamping groove, the side, away from the rotating disc, of the clamping block is fixedly connected with a first spring, the surface of the rotating shaft is fixedly sleeved with a gear, and the upper side and the lower side of the gear are engaged with rack plates. According to the utility model, by rotating the turntable, the rotating shaft drives the gear to rotate, because the rack plate is engaged with the gear, the rack plate drives the slide block to slide in the chute while the gear rotates, and the clamps are relatively close to or far away from each other, so that the distance between the two clamps is adjusted to adapt to charging pile cables with different lengths.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric wire and cable ampacity test, specifically to a device for testing the maximum ampacity of charging pile cable. BACKGROUND

[0002] With the global emphasis on environmental protection and sustainable energy utilization, the electric vehicle market is showing explosive growth. As the energy supply facility for electric vehicles, the performance of charging piles is crucial. The cable is a key component of the charging pile, bearing the task of electric energy transmission. Accurate testing of cable ampacity can ensure that the charging pile efficiently charges the electric vehicle under safe conditions.

[0003] When testing the cable ampacity, the charging pile cable to be tested is mainly intercepted, the insulation part 5-10 cm of the three core wires at both ends of the charging pile cable is stripped, and the exposed conductor part is fixed in the clamp. After connecting the power supply, the maximum ampacity can be obtained by observing the current value when the cable is allowed to have the highest temperature for a long time. However, due to the different lengths of the intercepted charging pile cable, the distance between the two clamps may not match the size when the clamp is used to fix it, which may cause the cable to deviate during testing, affecting the test results. SUMMARY

[0004] The utility model aims at providing a device for testing the maximum ampacity of charging pile cable to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a device for testing the maximum ampacity of charging pile cable, comprising a device body, a support plate fixedly connected to the top end of the device body, a sliding groove formed in the middle part of the support plate, a connecting frame fixedly connected to the back of the support plate, a rotating shaft rotatably connected inside the connecting frame, a rotating disc fixedly connected to the end of the rotating shaft away from the support plate, a clamping groove formed on the surface of the rotating disc, a clamping block provided inside the clamping groove, a first spring fixedly connected to the side of the clamping block away from the rotating disc, a gear fixedly sleeved on the surface of the rotating shaft, a rack plate meshed on the upper and lower sides of the gear, and a sliding block fixedly connected to the side of the rack plate close to the support plate.

[0006] As a further preferred embodiment of the present technical solution, the number of support plates is three, the number of connecting frames corresponds to the number of support plates, the connecting frame adopts a U-shaped structure, the number of clamping grooves is multiple, and the gear and the rack plate are located inside the connecting frame.

[0007] As a further preferred of the technical solution, the top end of the sliding block is fixedly connected with a mounting rack, the inner wall of the mounting rack is fixedly connected with a second spring, the bottom end of the second spring is fixedly connected with a positioning plate, the bottom of the positioning plate and the inner bottom wall of the mounting rack are both provided with a sawtooth strip, the top of the mounting rack is provided with a threaded hole, and the threaded hole is in threaded connection with an adjusting bolt.

[0008] As a further preferred of the technical solution, the bottom of the mounting rack is in contact with the supporting plate, the inside of the mounting rack is provided with a temperature sensor, the adjusting bolt is made of nylon material, and the bottom of the adjusting bolt is in contact with the positioning plate.

[0009] As a further preferred of the technical solution, the front of the device body is fixedly connected with a temperature table, the side of the device body close to the temperature table is fixedly connected with a voltage table, the side of the device body close to the voltage table is fixedly connected with a current table, the side of the device body close to the current table is provided with a single-item self-coupled voltage regulator, and the side of the device body close to the current table is provided with a three-item self-coupled voltage regulator.

[0010] As a further preferred of the technical solution, the front of the device body is fixedly connected with a mounting block, the inside of the mounting block is rotatably connected with a rotating rod, the surface of the rotating rod is movably sleeved with a torque spring, the surface of the rotating rod is fixedly connected with a protection door, the side of the protection door close to the device body is fixedly connected with a first magnetic block, and the side, away from the protection door, of the first magnetic block is provided with a second magnetic block.

[0011] As a further preferred of the technical solution, the number of the torque springs is two, the two torque springs are located on the upper and lower sides of the protection door, the protection door is in contact with the device body, and the second magnetic block is fixedly connected with the device body.

[0012] The utility model provides a device of test charging pile cable maximum carrying capacity has the following beneficial effects:

[0013] (1) the utility model discloses a card block is taken out from the card groove, rotates the turnplate, and makes the rotating shaft drive gear rotation, because the rack plate and the gear are engaged, make the gear rotation simultaneously and the rack plate drive the sliding block to slide in the sliding groove, and the fixture is relatively close or far away, thereby adjusting the interval between the two fixtures, to adapt to the charging pile cable of different length, after position adjustment is completed, make the card block again and fit in the card groove, and utilize first spring and make it always contact, thereby avoiding the fixture sliding condition in the testing process.

[0014] (2)The utility model discloses a handle is pulled to the protection door is rotated in the installation block through the rotating lever, and the torque spring is compressed and reeled in when the device body is idle, and the protection door contacts the device body after rotating a certain angle, and because the first magnetic block and the second magnetic block are different name magnet, the first magnetic block and the second magnetic block are attracted to each other, thereby fixing the protection door on the device body, improve the protection effect to the ammeter and other components, avoid damaging. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the utility model structural schematic diagram;

[0016] Figure 2 It is the utility model's ammeter and voltmeter structural schematic diagram;

[0017] Figure 3 It is the utility model's supporting plate structural schematic diagram;

[0018] Figure 4 It is the utility model's gear and rack plate structural schematic diagram;

[0019] Figure 5 It is the utility model's mounting bracket and adjusting bolt unfolding structural schematic diagram.

[0020] In the drawing: 1, supporting plate;2, sliding slot;3, connecting frame;4, rotating shaft;5, rotating disc;6, clamping groove;7, clamping block;8, first spring;9, gear;10, rack plate;11, sliding block;12, mounting bracket;13, second spring;14, positioning plate;15, sawtooth rack;16, threaded hole;17, adjusting bolt;18, device body;19, temperature table;20, voltmeter;21, ammeter;22, single self-coupled voltage regulator;23, three self-coupled voltage regulator;24, installation block;25, rotating lever;26, torque spring;27, protection door;28, first magnetic block;29, second magnetic block. DETAILED DESCRIPTION

[0021] The technical scheme in the utility model embodiment will be described clearly and completely in conjunction with the drawings in the utility model embodiment.

[0022] The utility model provides technical scheme: as Figure 1 And Figure 5As shown, in this embodiment, a device for testing the maximum carrying capacity of a charging pile cable comprises a device body 18, the top end of the device body 18 is fixedly connected with a support plate 1, the middle part of the support plate 1 is provided with a sliding groove 2, the back of the support plate 1 is fixedly connected with a connecting frame 3, the inside of the connecting frame 3 is rotatably connected with a rotating shaft 4, the end of the rotating shaft 4 away from the support plate 1 is fixedly connected with a rotating disc 5, the surface of the rotating disc 5 is provided with a clamping groove 6, the inside of the clamping groove 6 is provided with a clamping block 7, the side of the clamping block 7 away from the rotating disc 5 is fixedly connected with a first spring 8, the surface of the rotating shaft 4 is fixedly sleeved with a gear 9, the upper and lower sides of the gear 9 are engaged with a rack plate 10, and the side of the rack plate 10 close to the support plate 1 is fixedly connected with a sliding block 11.

[0023] By taking out the clamping block 7 from the clamping groove 6, rotating the rotating disc 5, and making the rotating shaft 4 drive the gear 9 to rotate, due to the engagement of the rack plate 10 and the gear 9, the gear 9 rotates while the rack plate 10 drives the sliding block 11 to slide in the sliding groove 2, and the clamps are relatively close or far away, so as to adjust the distance between the two clamps to adapt to charging pile cables of different lengths. After the position adjustment is completed, the clamping block 7 is clamped in the clamping groove 6 again, and the first spring 8 is used to make it always in contact, so as to avoid the sliding of the clamp during the test.

[0024] The number of support plates 1 is three, the number of connecting frames 3 corresponds to the number of support plates 1, the connecting frame 3 adopts a U-shaped structure, the number of clamping grooves 6 is multiple, and the gear 9 and the rack plate 10 are located in the inside of the connecting frame 3.

[0025] The top end of the sliding block 11 is fixedly connected with a mounting frame 12, the inner wall of the mounting frame 12 is fixedly connected with a second spring 13, the bottom end of the second spring 13 is fixedly connected with a positioning plate 14, the bottom of the positioning plate 14 and the inner bottom wall of the mounting frame 12 are both provided with a sawtooth strip 15, the top of the mounting frame 12 is provided with a threaded hole 16, and the inside of the threaded hole 16 is threadedly connected with an adjusting bolt 17.

[0026] By placing the exposed conductor part in the mounting frame 12, rotating the adjusting bolt 17, and making it rotate in the threaded hole 16 and press down the positioning plate 14, the second spring 13 is stretched, and after moving down a certain height, the positioning plate 14 contacts the conductor, so as to fix the position. The downward movement of the positioning plate 14 can be slowed down by the elastic force of the second spring 13, so as to avoid damage to the conductor caused by extrusion. In addition, the sawtooth strips 15 are arranged on the inner bottom wall of the positioning plate 14 and the mounting frame 12, which can increase the friction between the conductor and the sawtooth strips 15, so as to improve the stability after fixing.

[0027] The bottom of the mounting frame 12 is in contact with the support plate 1, the inside of the mounting frame 12 is provided with a temperature sensor, the adjusting bolt 17 is made of nylon material, and the bottom of the adjusting bolt 17 is in contact with the positioning plate 14.

[0028] The front of the device body 18 is fixedly connected with a temperature meter 19, the side of the device body 18 close to the temperature meter 19 is fixedly connected with a voltmeter 20, the side of the device body 18 close to the voltmeter 20 is fixedly connected with an ammeter 21, the side of the device body 18 close to the ammeter 21 is provided with a single-phase self-coupled voltage regulator 22, and the side of the device body 18 close to the ammeter 21 is provided with a three-phase self-coupled voltage regulator 23.

[0029] The temperature of the three-core charging pile cable during power supply can be observed through the temperature meter 19, the voltage of the two ends of the three-core cable during power supply can be observed through the voltmeter 20, the voltage of the two ends of the three-core cable can be adjusted through the three-phase self-coupled voltage regulator 23, and the current of each core can be finely adjusted through the single-phase self-coupled voltage regulator 22, so that the maximum allowable temperature of the cable core is reached.

[0030] The front of the device body 18 is fixedly connected with a mounting block 24, the inside of the mounting block 24 is rotatably connected with a rotating rod 25, the surface of the rotating rod 25 is movably sleeved with a torque spring 26, the surface of the rotating rod 25 is fixedly connected with a protective door 27, the side of the protective door 27 close to the device body 18 is fixedly connected with a first magnetic block 28, and the side, away from the protective door 27, of the first magnetic block 28 is provided with a second magnetic block 29.

[0031] By pulling the handle, the protective door 27 is rotated in the mounting block 24 through the rotating rod 25, and the torque spring 26 is compressed and wound, and after rotating by a certain angle, the protective door 27 contacts the device body 18, and since the first magnetic block 28 and the second magnetic block 29 are opposite poles of a magnet, the first magnetic block 28 and the second magnetic block 29 attract each other, so that the protective door 27 is fixed on the device body 18, thereby improving the protection effect of the ammeter 21 and the like, and avoiding damage.

[0032] The number of torque springs 26 is two, the two torque springs 26 are located on the upper and lower sides of the protective door 27, the protective door 27 contacts the device body 18, and the second magnetic block 29 is fixedly connected with the device body 18.

[0033] The utility model provides a kind of device for testing maximum carrying capacity of charging pile cable, and specific working principle is as follows:

[0034] In use, the protective door 27 is pulled to separate the first magnetic block 28 and the second magnetic block 29, the rotating lever 25 is rotated under the elastic force of the torque spring 26 and drives the protective door 27 to open, the charging pile cable to be tested is cut off, the insulation parts of the three cores of the charging pile cable are stripped 5-10 cm, and the exposed conductor parts are placed in the mounting frame 12, the rotating disc 5 is rotated to drive the shaft 4 and the gear 9 to rotate, the rack plate 10 and the gear 9 are engaged, the rack plate 10 drives the sliding block 11 to slide in the sliding groove 2 while the gear 9 rotates, the two mounting frames 12 are moved and approached to each other, when the conductor end surface contacts the temperature sensor in the mounting frame 12, the rotation is stopped, the clamping block 7 is clamped in the clamping groove 6, the adjusting screw 17 is rotated to rotate in the threaded hole 16 and press the positioning plate 14 downward, when the positioning plate 14 contacts the conductor after moving downward by a certain height, the position is fixed, the power switch of the device body 18 is turned on, the mounting frame 12 and the device body 18 are electrically connected, so that the charging pile cable has current passing through, the temperature sensor is used to detect the temperature of the conductor of the charging pile cable when the conductor is powered on, the detection signal is transmitted to the processing module, and the temperature data is displayed on the temperature table 19, when the value displayed on the temperature table 19 reaches the long-term maximum allowable temperature of the charging pile cable, the current value displayed on the ammeter 21 is the maximum current-carrying capacity corresponding to the cable.

[0035] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A device for testing the maximum current carrying capacity of a charging station cable, comprising a device body (18), characterised in that: The top end of the device body (18) is fixedly connected with a support plate (1), the middle part of the support plate (1) is provided with a sliding groove (2), the back of the support plate (1) is fixedly connected with a connecting frame (3), the inside of the connecting frame (3) is rotatably connected with a rotating shaft (4), the end of the rotating shaft (4) away from the support plate (1) is fixedly connected with a rotating disc (5), the surface of the rotating disc (5) is provided with a clamping groove (6), the inside of the clamping groove (6) is provided with a clamping block (7), the side of the clamping block (7) away from the rotating disc (5) is fixedly connected with a first spring (8), the surface of the rotating shaft (4) is fixedly sleeved with a gear (9), the upper and lower sides of the gear (9) are engaged with a rack plate (10), the side of the rack plate (10) close to the support plate (1) is fixedly connected with a sliding block (11).

2. The device for testing the maximum current carrying capacity of a charging pile cable according to claim 1, characterized in that: The number of the support plate (1) is three, the number of the connecting frame (3) and the support plate (1) corresponds, the connecting frame (3) adopts a shape structure, the number of the clamping groove (6) is multiple, the gear (9) and the rack plate (10) are located in the inside of the connecting frame (3).

3. The device for testing the maximum current carrying capacity of a charging pile cable according to claim 1, wherein: The top end of the sliding block (11) is fixedly connected with a mounting frame (12), the inner wall of the mounting frame (12) is fixedly connected with a second spring (13), the bottom end of the second spring (13) is fixedly connected with a positioning plate (14), the bottom of the positioning plate (14) and the inner bottom wall of the mounting frame (12) are provided with sawtooth strips (15), the top of the mounting frame (12) is provided with a threaded hole (16), the inside of the threaded hole (16) is threadedly connected with an adjusting bolt (17).

4. The device for testing the maximum current carrying capacity of a charging pile cable according to claim 3, characterized in that: The bottom of the mounting frame (12) contacts with the support plate (1), the inside of the mounting frame (12) is provided with a temperature sensor, the adjusting bolt (17) adopts nylon material, the bottom of the adjusting bolt (17) contacts with the positioning plate (14).

5. The device for testing the maximum current carrying capacity of a charging pile cable according to claim 1, wherein: The front of the device body (18) is fixedly connected with a temperature table (19), the side of the device body (18) close to the temperature table (19) is fixedly connected with a voltage table (20), the side of the device body (18) close to the voltage table (20) is fixedly connected with a current table (21), the side of the device body (18) close to the current table (21) is provided with a single self-coupled voltage regulator (22), the side of the device body (18) close to the current table (21) is provided with a three self-coupled voltage regulator (23).

6. The device for testing the maximum current carrying capacity of a charging pile cable according to claim 1, characterized in that: The front of the device body (18) is fixedly connected with a mounting block (24), the inside of the mounting block (24) is rotatably connected with a rotating rod (25), the surface of the rotating rod (25) movably sleeved with a torque spring (26), the surface of the rotating rod (25) is fixedly connected with a protective door (27), the side of the protective door (27) close to the device body (18) is fixedly connected with a first magnetic block (28), the side of the first magnetic block (28) away from the protective door (27) is provided with a second magnetic block (29).

7. The device for testing the maximum current carrying capacity of a charging station cable according to claim 6, characterized in that: The number of the torque springs (26) is two, and the two torque springs (26) are located on the upper and lower sides of the protective door (27), the protective door (27) is in contact with the device body (18), and the second magnetic block (29) is fixedly connected with the device body (18).

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