Electrical test equipment for cable processing

Abstract

The invention discloses a cable processing electrical test device which comprises a test machine body, an electrical test box is arranged in the middle of one side of the test machine body, an operation panel is arranged on one side, away from the test machine body, of the electrical test box, and two clamping mechanisms are arranged on the test machine body below the two opposite ends of the electrical test box. A winding mechanism is arranged on the testing machine body below the clamping mechanism, two testing ports are formed in the bottom of the electrical testing box, a testing cable is arranged on the winding mechanism in a winding mode, the two ends of the testing cable are inserted into the electrical testing box through the testing ports, and the testing cable is clamped and fixed through the clamping mechanism below the electrical testing box. And a display screen is arranged on the testing machine body above the electrical testing box. By arranging a series of structures, the test port is hidden and safe, the test operation is convenient, the clamping fixation and pressure-bearing test of the test cable and the winding and fixation of the test cable are realized, the stability and safety are realized, and the interference of the temperature on the test is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of cable electrical testing, in particular to a cable processing electrical testing device. Background Art

[0002] The main purpose of electrical testing of cables is to ensure the safety and reliability of cables, as well as to optimize the performance and service life of cables. Electrical testing of cables includes multiple items to comprehensively evaluate the electrical and mechanical properties of cables to ensure that they meet safety standards and performance requirements.

[0003] At present, cable electrical testing adopts a split type, which is inconvenient to test. When testing longer cables, scattered cables can easily cause accidental contact and pose safety hazards. During cable electrical testing, factors such as the temperature of the test equipment and the test clamping pressure interfere with the cable electrical testing and affect the accuracy of the test. Summary of the invention

[0004] The object of the present invention is to provide a cable processing electrical testing device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cable processing electrical testing device, comprising a testing machine body, an electrical testing box is provided in the middle of one side of the testing machine body, an operation panel is provided on the side of the electrical testing box away from the testing machine body, clamping mechanisms are provided on the testing machine body below opposite ends of the electrical testing box, two clamping mechanisms are provided, a winding mechanism is provided on the testing machine body below the clamping mechanism, two test ports are provided at the bottom of the electrical testing box, a test cable is wound on the winding mechanism, both ends of the test cable are inserted into the electrical testing box through the test ports, the clamping mechanism below the electrical testing box clamps and fixes the test cable, a display screen is provided on the testing machine body above the electrical testing box, an electrical testing module is provided on the side of the testing machine body close to the electrical testing box, an integrated circuit board is provided on the side of the electrical testing module away from the electrical testing box, a heat dissipation mechanism is provided on the testing machine body, a temperature sensor is provided inside the testing machine body, a roller is provided at the bottom of the testing machine body, fixing mechanisms are provided on opposite sides of the lower end of the testing machine body, and an alarm is provided on the top of the testing machine body.

[0006] Preferably, the clamping mechanism includes a guide rail groove, a bidirectional screw, a servo motor, a No. 1 clamping plate, a No. 2 clamping plate and a threaded sleeve. Guide rail grooves are provided on the test machine body below the opposite ends of the electrical test box, and a bidirectional screw is provided inside the guide rail groove. One end of the bidirectional screw is connected to the output end of the servo motor on the test machine body through a coupling. A No. 1 clamping plate and a No. 2 clamping plate are provided below the opposite ends of the electrical test box, and one end of the No. 1 clamping plate and the No. 2 clamping plate are provided with a threaded sleeve. Two threaded sleeves are provided, and the two threaded sleeves are arranged in the guide rail grooves, and the two threaded sleeves are symmetrically connected to the bidirectional screw threads, and the servo motor is electrically connected to the operation panel.

[0007] Preferably, the No. 1 clamping plate and the No. 2 clamping plate adopt the same structural setting, and the No. 1 clamping plate and the No. 2 clamping plate are both composed of a clamping plate, a clamping groove, a clamping pad and a detection probe. A clamping plate is provided on the side of the threaded sleeve away from the testing machine body, and a clamping groove is provided on the clamping plate on the side close to the No. 1 clamping plate and the No. 2 clamping plate. A clamping pad is provided on the inner surface of the clamping groove, and a detection probe is provided on the clamping plate in the middle of the clamping groove through a mounting groove. A pressure sensor is provided on the detection probe, and the detection probe is electrically connected to the operation panel and the display screen.

[0008] Preferably, the clamping groove is arranged in an arc-shaped groove structure, and the surface of the clamping pad is provided with friction convex patterns.

[0009] Preferably, the heat dissipation mechanism includes a heat sink, a thermal conductive sheet, a heat dissipation hole and a heat dissipation fan. A heat sink is provided inside the test machine body on the side of the integrated circuit board away from the electrical test module, a thermal conductive sheet is provided on the side of the heat sink away from the integrated circuit board, one end of the heat sink away from the thermal conductive sheet is arranged in contact with the surface of the integrated circuit board, a plurality of heat sinks are provided, a plurality of heat dissipation holes are provided on two opposite sides of the test machine body, a dustproof net is provided inside the heat dissipation holes, a heat dissipation fan is provided on one side of the test machine body through the mounting hole, a protective cover is provided on the outside of the heat dissipation fan, and the input end of the heat dissipation fan is electrically connected to the output end of the temperature sensor.

[0010] Preferably, the winding mechanism includes a accommodating groove, a winding wheel and a winding motor. A accommodating groove is provided on the testing machine body below the clamping mechanism. A winding wheel is provided inside the accommodating groove. A rotating shaft is provided at both opposite ends of the winding wheel. The winding wheel is rotatable in the accommodating groove through the rotating shaft. The rotating shaft at one end of the winding wheel is connected to the output end of the winding motor on the testing machine body through a coupling.

[0011] Preferably, the fixing mechanism includes an electric telescopic rod and a positioning plate, and electric telescopic rods are provided on the testing machine body at opposite ends of the accommodating groove, and the output end of the electric telescopic rod is connected to the positioning plate, and the positioning plate is arranged below the testing machine body.

[0012] Preferably, the electrical test box is arranged in an inclined surface structure on a side away from the test machine body, and the operation panel is arranged on the electrical test box at the upper end of the inclined surface.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The cable processing electrical test equipment has an electrical test box arranged on the test machine body. The test port of the electrical test box is arranged downward, the test port is concealed and safe, and the operation panel is arranged on the inclined surface of the electrical test box. The cable processing electrical test operation is convenient.

[0015] 2. This cable processing electrical testing equipment realizes the functions of clamping and fixing the test cable and pressure testing through the clamping mechanism arranged under the electrical test box. The clamping is convenient. Combined with the accommodating groove, winding wheel and servo motor arranged on the test machine body, the test cable can be wound up, wound up and fixed, and the stability and safety of cable testing are improved. The equipment is flexible and convenient to move and stable to fix.

[0016] 3. This cable processing electrical testing equipment, through the heat sink and heat conductive sheet arranged inside the test machine body, cooperates with the heat dissipation holes and the cooling fan to achieve the coordinated heat dissipation of the test machine body and the heat dissipation of air circulation. Combined with the temperature sensor arranged inside the test machine body, the interference of the test machine operating temperature on the cable electrical performance test is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the testing machine body in the present invention;

[0019] Figure 3 It is a structural schematic diagram of the heat dissipation fan in the present invention;

[0020] Figure 4 It is a schematic diagram of the structure of the bidirectional screw in the present invention;

[0021] Figure 5 It is a structural schematic diagram of the clamping plate in the present invention.

[0022] In the figure: 1. Test machine body; 2. Electrical test box; 3. Clamping mechanism; 31. Guide groove; 32. Bidirectional screw; 33. Servo motor; 34. No. 1 clamping plate; 35. No. 2 clamping plate; 351. Clamping plate; 352. Clamping groove; 353. Clamping pad; 354. Detection probe; 36. Threaded sleeve; 4. Receiving groove; 41. Winding wheel; 42. Winding motor; 5. Display screen; 6. Electrical test module; 61. Integrated circuit board; 7. Heat sink; 71. Thermal conductive sheet; 8. Heat dissipation hole; 9. Cooling fan; 10. Temperature sensor; 11. Roller; 12. Electric telescopic rod; 13. Positioning plate; 14. Alarm; 15. Test cable. DETAILED DESCRIPTION

[0023] 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.

[0024] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0025] like Figures 1 to 5As shown, the cable processing electrical testing equipment of this embodiment includes a testing machine body 1, an electrical testing box 2 is provided in the middle of one side of the testing machine body 1, an operation panel is provided on the side of the electrical testing box 2 away from the testing machine body 1, clamping mechanisms 3 are provided on the testing machine body 1 below the opposite ends of the electrical testing box 2, two clamping mechanisms 3 are provided, a winding mechanism is provided on the testing machine body 1 below the clamping mechanism 3, two test ports are provided at the bottom of the electrical testing box 2, two ends of the test cable 15 are inserted into the interior of the electrical testing box 2 through the test ports, the test port of the electrical testing box 2 is arranged downward, and the clamping mechanism 3 is below the test port, which can shield the test port, and the test port is hidden and safe, a test cable 15 is wound on the winding mechanism, two ends of the test cable 15 are inserted into the electrical testing box 2 through the test port, the clamping mechanism 3 below the electrical testing box 2 clamps and fixes the test cable 15, a display screen 5 is provided on the testing machine body 1 above the electrical testing box 2, and a side of the inside of the testing machine body 1 close to the electrical testing box 2 An electrical test module 6 is provided, and an integrated circuit board 61 is provided on a side of the electrical test module 6 away from the electrical test box 2. A cable electrical test connection port is provided inside the electrical test box 2, and the connection port is electrically connected to the electrical test module 6. A test cable 15 to be tested is inserted into the connection port inside the electrical test box 2 through the test port, and the test end of the test cable 15 is electrically connected to the connection port. The electrical test module 6 is electrically connected to the display screen 5, the operation panel and the integrated circuit board 61. A heat dissipation mechanism is provided on the test machine body 1, and a temperature sensor 10 is provided inside the test machine body 1. A roller 11 is provided at the bottom of the test machine body 1, and fixing mechanisms are provided on the opposite sides of the lower end of the test machine body 1. An alarm 14 is provided on the top of the test machine body 1 to achieve coordinated heat dissipation of the test machine body 1 and heat dissipation through air circulation, thereby reducing the interference of the test machine operating temperature on the cable electrical performance test and improving the accuracy of the test. The test cable 15 is rolled up and fixed to improve the stability and safety of the cable test.

[0026] Specifically, the clamping mechanism 3 includes a guide groove 31, a bidirectional screw 32, a servo motor 33, a first clamping plate 34, a second clamping plate 35 and a threaded sleeve 36. The test machine body 1 below the two opposite ends of the electrical test box 2 is provided with a guide groove 31, and a bidirectional screw 32 is provided inside the guide groove 31. One end of the bidirectional screw 32 is connected to the output end of the servo motor 33 on the test machine body 1 through a coupling. The first clamping plate 34 and the second clamping plate 35 are provided below the two opposite ends of the electrical test box 2. One end of the first clamping plate 34 and the second clamping plate 35 are provided. A threaded sleeve 36 is provided at each end, and two threaded sleeves 36 are provided. The two threaded sleeves 36 are arranged in the guide rail groove 31, and the two threaded sleeves 36 are symmetrically connected to the bidirectional screw 32 by threads. The servo motor 33 is electrically connected to the operation panel. The servo motor 33 drives the bidirectional screw 32 in the guide rail groove 31 to rotate, and the two threaded sleeves 36 symmetrically arranged on the bidirectional screw 32 drive the first clamp 34 and the second clamp 35 to move closer to each other, and the first clamp 34 and the second clamp 35 are used to clamp and fix the test cable 15 under the electrical test box 2.

[0027] Furthermore, the No. 1 clamping plate 34 and the No. 2 clamping plate 35 adopt the same structural setting. Both the No. 1 clamping plate 34 and the No. 2 clamping plate 35 are composed of a clamping plate 351, a clamping groove 352, a clamping pad 353 and a detection probe 354. The clamping plate 351 is provided on the side of the threaded sleeve 36 away from the testing machine body 1, and the clamping groove 352 is provided on the clamping plate 351 on the side where the No. 1 clamping plate 34 and the No. 2 clamping plate 355 are close to each other. The inner surface of the clamping groove 352 is provided with a clamping pad 353. A detection probe 354 is provided on the clamping plate 351 in the middle of the clamping groove 352 through a mounting groove. The detection probe 354 is provided with a pressure sensor. The pressure sensor on the detection probe 354 can detect the clamping pressure of the test cable 15. The detection probe 354 is electrically connected to the operation panel and the display screen 5, so that the clamping mechanism 3 can perform clamping pressure test on the test cable 15, and can test the electrical performance of the test cable 15 under different pressure conditions.

[0028] Furthermore, the clamping groove 352 is arranged in an arc-shaped groove structure, and the surface of the clamping pad 353 is provided with friction convex patterns, so that the clamping structure between the clamping groove 352 and the cable is compact and has a large friction force.

[0029] Furthermore, the heat dissipation mechanism includes a heat sink 7, a heat conductive sheet 71, a heat dissipation hole 8 and a heat dissipation fan 9. A heat sink 7 is provided inside the test machine body 1 on the side of the integrated circuit board 61 away from the electrical test module 6. A heat conductive sheet 71 is provided on the side of the heat sink 7 away from the integrated circuit board 61. One end of the heat sink 7 away from the heat conductive sheet 71 is arranged in contact with the surface of the integrated circuit board 61. There are several heat sinks 7. Several heat dissipation holes 8 are provided on the opposite sides of the test machine body 1. A dustproof net is provided inside the heat dissipation hole 8. A heat dissipation fan 9 is provided on one side of the test machine body 1 through the mounting hole. A protective cover is provided on the outside of the heat dissipation fan 9. The input end of the heat dissipation fan 9 is electrically connected to the output end of the temperature sensor 10. The temperature sensor 10 monitors the internal temperature of the test machine body 1 in real time. The heat generated by the operation of the electrical test module 6 and the integrated circuit board 61 is quickly diffused in the surrounding air through heat conduction through the heat sink 7. Under the action of the heat dissipation fan 9, the external low-temperature air enters the interior of the test machine body 1 through the heat dissipation hole 8, and the high-temperature air generated by heat conduction inside the test machine body 1 is discharged through the heat dissipation hole 8.

[0030] Furthermore, the winding mechanism includes a receiving groove 4, a winding wheel 41 and a winding motor 42. A receiving groove 4 is provided on the test machine body 1 below the clamping mechanism 3. A winding wheel 41 is provided inside the receiving groove 4. A rotating shaft is provided at both opposite ends of the winding wheel 41. The winding wheel 41 is rotatable in the receiving groove 4 through the rotating shaft. The rotating shaft at one end of the winding wheel 41 is connected to the output end of the winding motor 42 on the test machine body 1 through a coupling. The winding motor 42 drives the winding wheel 41 to rotate in the receiving groove 4, and the test cable 15 is wound on the winding wheel 41, thereby realizing the winding of the test cable 15.

[0031] Furthermore, the fixing mechanism includes an electric telescopic rod 12 and a positioning plate 13. The electric telescopic rod 12 is provided on the test machine body 1 at the opposite ends of the accommodating groove 4. The output end of the electric telescopic rod 12 is connected to the positioning plate 13. The positioning plate 13 is arranged below the test machine body 1.

[0032] Furthermore, the side of the electrical test box 2 away from the test machine body 1 is arranged in an inclined surface structure, and the operation panel is arranged on the electrical test box 2 at the upper end of the inclined surface, which is convenient for operation.

[0033] The method of using this embodiment is as follows: the test equipment is pushed to the position of the cable test, the electric telescopic rod 12 pushes the positioning plate 13 downward, the positioning plate 13 contacts the ground, and the equipment is fixed by the fixing mechanism. After the test is completed, the electric telescopic rod 12 is reset, the positioning plate 13 leaves the ground, and the test equipment is pushed away. The equipment is flexible and convenient to move and is fixed stably. Before the test, the test cable 15 to be tested is selected, and the winding motor 42 drives the winding wheel 41 to rotate in the accommodating groove 4 to wind the test cable 15 on the winding wheel 41 to achieve the test. The cable 15 is wound up, and the test cable 15 is wound up and fixed, which improves the stability and safety of the cable test. The two ends of the test cable 15 are inserted into the interior of the electrical test box 2 through the test port. The test port of the electrical test box 2 is set downward, and the clamping mechanism 3 is below the test port, which can shield the test port. The test port is hidden and safe. The operation panel is set on the inclined surface of the electrical test box 2, and the cable processing electrical test operation is convenient. The servo motor 33 drives the bidirectional screw 32 in the guide groove 31 to rotate. The threads on the bidirectional screw 32 are symmetrically arranged. The two threaded sleeves 36 drive the No. 1 clamping plate 34 and the No. 2 clamping plate 35 to move closer to each other, and the No. 1 clamping plate 34 and the No. 2 clamping plate 35 are used to clamp and fix the test cable 15 under the electrical test box 2. Since the No. 1 clamping plate 34 and the No. 2 clamping plate 35 are both composed of a clamping plate 351, a clamping groove 352, a clamping pad 353 and a detection probe 354, the pressure sensor on the detection probe 354 can detect the clamping pressure of the test cable 15, thereby realizing the functions of clamping and fixing the test cable 15 and pressure testing. During the test, the temperature sensor The device 10 monitors the internal temperature of the test machine body 1 in real time. The heat generated by the operation of the electrical test module 6 and the integrated circuit board 61 is quickly diffused into the surrounding air through heat conduction through the heat sink 7. Under the action of the cooling fan 9, the external low-temperature air enters the interior of the test machine body 1 through the heat dissipation holes 8, and the high-temperature air generated by the internal heat conduction of the test machine body 1 is discharged through the heat dissipation holes 8, thereby realizing the coordinated heat dissipation of the test machine body 1 by heat conduction and the heat dissipation by air circulation, reducing the interference of the operating temperature of the test machine on the electrical performance test of the cable, and improving the accuracy of the test.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cable processing electrical testing device, comprising a testing machine body (1), characterized in that: An electrical test box (2) is provided in the middle of one side of the test machine body (1), and an operation panel is provided on the side of the electrical test box (2) away from the test machine body (1). A clamping mechanism (3) is provided on the test machine body (1) below the two opposite ends of the electrical test box (2), and two clamping mechanisms (3) are provided. A winding mechanism is provided on the test machine body (1) below the clamping mechanism (3). Two test ports are provided at the bottom of the electrical test box (2), and a test cable (15) is wound on the winding mechanism. Both ends of the test cable (15) are inserted into the electrical test box (2) through the test ports. The clamping mechanism (3) below the electrical test box (2) is provided for the test. The test cable (15) is clamped and fixed, a display screen (5) is provided on the test machine body (1) above the electrical test box (2), an electrical test module (6) is provided on the side of the test machine body (1) close to the electrical test box (2), an integrated circuit board (61) is provided on the side of the electrical test module (6) away from the electrical test box (2), a heat dissipation mechanism is provided on the test machine body (1), a temperature sensor (10) is provided inside the test machine body (1), a roller (11) is provided at the bottom of the test machine body (1), fixing mechanisms are provided on two opposite sides of the lower end of the test machine body (1), and an alarm (14) is provided on the top of the test machine body (1).

2. The cable processing electrical testing equipment according to claim 1, characterized in that: The clamping mechanism (3) comprises a guide groove (31), a bidirectional screw (32), a servo motor (33), a first clamping plate (34), a second clamping plate (35) and a threaded sleeve (36). The test machine body (1) below the two opposite ends of the electrical test box (2) is provided with a guide groove (31), a bidirectional screw (32) is provided inside the guide groove (31), and one end of the bidirectional screw (32) is connected to the servo motor (33) on the test machine body (1) through a coupling. The output end is connected, and a first clamping plate (34) and a second clamping plate (35) are provided below the two opposite ends of the electrical test box (2), and one end of the first clamping plate (34) and the second clamping plate (35) are provided with a threaded sleeve (36), and two threaded sleeves (36) are provided, and the two threaded sleeves (36) are arranged in the guide rail groove (31), and the two threaded sleeves (36) are symmetrically connected to the bidirectional screw (32) by thread, and the servo motor (33) is electrically connected to the operation panel.

3. The cable processing electrical testing equipment according to claim 2, characterized in that: The first clamping plate (34) and the second clamping plate (35) adopt the same structural setting. The first clamping plate (34) and the second clamping plate (35) are both composed of a clamping plate (351), a clamping groove (352), a clamping pad (353) and a detection probe (354). The threaded sleeve (36) is provided with a clamping plate (351) on the side away from the testing machine body (1). The clamping plate (351) on the side where the first clamping plate (34) and the second clamping plate (355) are close to each other is provided with a clamping groove (352). The inner surface of the clamping groove (352) is provided with a clamping pad (353). A detection probe (354) is provided on the clamping plate (351) in the middle of the clamping groove (352) through a mounting groove. The detection probe (354) is provided with a pressure sensor. The detection probe (354) is electrically connected to the operation panel and the display screen (5).

4. The cable processing electrical testing equipment according to claim 3, characterized in that: The clamping groove (352) is arranged in a circular arc groove structure, and the surface of the clamping pad (353) is provided with friction convex patterns.

5. The cable processing electrical testing equipment according to claim 1, characterized in that: The heat dissipation mechanism comprises a heat sink (7), a heat conductive sheet (71), a heat dissipation hole (8) and a heat dissipation fan (9). A heat sink (7) is provided inside the test machine body (1) at a side of the integrated circuit board (61) away from the electrical test module (6). A heat conductive sheet (71) is provided on a side of the heat sink (7) away from the integrated circuit board (61). One end of the heat sink (7) away from the heat conductive sheet (71) is arranged in contact with the surface of the integrated circuit board (61). A plurality of heat sinks (7) are provided. A plurality of heat dissipation holes (8) are provided on opposite sides of the test machine body (1). A dustproof net is provided inside the heat dissipation hole (8). A heat dissipation fan (9) is provided on one side of the test machine body (1) through a mounting hole. A protective cover is provided on the outside of the heat dissipation fan (9). The input end of the heat dissipation fan (9) is electrically connected to the output end of the temperature sensor (10).

6. The cable processing electrical testing equipment according to claim 1, characterized in that: The winding mechanism comprises a receiving groove (4), a winding wheel (41) and a winding motor (42); a receiving groove (4) is provided on the test machine body (1) below the clamping mechanism (3); a winding wheel (41) is provided inside the receiving groove (4); rotating shafts are provided at opposite ends of the winding wheel (41); the winding wheel (41) is rotatably arranged in the receiving groove (4); the rotating shaft at one end of the winding wheel (41) is connected to the output end of the winding motor (42) on the test machine body (1) through a coupling.

7. The cable processing electrical testing equipment according to claim 6, characterized in that: The fixing mechanism comprises an electric telescopic rod (12) and a positioning plate (13); the electric telescopic rod (12) is provided on the test machine body (1) at opposite ends of the accommodating groove (4); the output end of the electric telescopic rod (12) is connected to the positioning plate (13); and the positioning plate (13) is provided below the test machine body (1).

8. The cable processing electrical testing equipment according to claim 1, characterized in that: The electrical test box (2) is arranged in an inclined surface structure on a side away from the test machine body (1), and the operation panel is arranged on the electrical test box (2) at the upper end of the inclined surface.

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