A dielectric loss tester

Abstract

The utility model relates to test technical field discloses a kind of dielectric loss testers, including tester main body, dust cover is arranged on the tester main body, and the socket is arranged on the tester main body, cable clamping assembly is arranged on the tester main body, is located above the socket, and the inside of the tester main body is provided with movable cavity, the inside of movable cavity is provided with the storage assembly for storing cable clamping assembly, wherein, the storage assembly includes the sliding shaft that can or up or lower motion, inside movable cavity, the upper end of the sliding shaft is provided with lifting plate, and the inside of movable cavity is provided with the second sliding groove compatible with lifting plate;By rotating the rotating wheel to drive the bidirectional screw rod to rotate, the holder is retracted and the cable is fixed, to prevent accidental contact with the cable, resulting in the joint of the cable inadvertently pulling the interface on the dielectric loss tester from the device, resulting in the dielectric loss tester interface damage problem occurs.

Description

Technical Field

[0001] This utility model relates to the field of testing technology, and in particular to a dielectric loss tester. Background Technology

[0002] A dielectric loss tester is an instrument used to measure the loss tangent (tanδ) and capacitance (Cx) of the insulating dielectric in electrical equipment. Under the influence of an alternating current electric field, the insulating dielectric undergoes polarization and conductivity, causing some electrical energy to be converted into heat energy, which is the dielectric loss. The tester applies a high-voltage alternating current of a certain frequency to both ends of the test object and simultaneously measures the phase difference between the current flowing through the test object and the applied voltage. In an ideal insulating dielectric, the phase difference between current and voltage is 90°, but in actual dielectrics, due to losses, the phase difference is less than 90°. The tangent (tanδ) of this phase difference is the dielectric loss factor, which directly reflects the quality of the insulating dielectric.

[0003] Most existing dielectric loss testers lack a dedicated cable clamping and fixing structure for limiting and fixing the connected cables. During testing, if the connecting cable is accidentally touched, the plug can easily pull out the connector on the dielectric loss tester, potentially damaging the tester. In addition, even if a few dielectric loss testers on the market have cable fixing components, dust can easily erode the control panel when the tester is not in use. Therefore, existing dielectric loss testers are equipped with a dust cover. This means that the dust cover cannot fit well with the control panel of these dielectric loss testers with cable clamping and fixing structures, allowing dust to easily enter the device through gaps such as connectors. Utility Model Content

[0004] Purpose of the utility model: The purpose of this utility model is to provide a dielectric loss tester to overcome the above-mentioned shortcomings in the prior art.

[0005] Technical solution: A dielectric loss tester includes a tester body, a dust cover, and a connector. A cable clamping assembly is located above the connector. An internal cavity is formed within the tester body, and a storage assembly for storing the cable clamping assembly is located within the cavity.

[0006] The storage assembly includes a sliding shaft that can move up or down, located inside the movable cavity. The upper end of the sliding shaft is provided with a lifting plate, and the interior of the movable cavity is provided with a second sliding groove that is adapted to the lifting plate.

[0007] As a further description of the above technical solution: the cable clamping assembly includes a mounting frame, and the main body of the tester is provided with a first sliding groove for the mounting frame to slide. The mounting frame is provided with a connecting shaft, and the lower end of the connecting shaft is provided with a clamp.

[0008] Furthermore, the cable clamping assembly also includes a drive unit, which includes a connecting frame fixedly connected to the mounting bracket, a drive shaft rotatably connected to the connecting frame, a rotating wheel provided on the drive shaft, and a bidirectional lead screw fixedly connected to the drive shaft. The clamp is provided with a threaded groove that matches the bidirectional lead screw.

[0009] As a further description of the above technical solution: the main body of the tester is also provided with a limit component, wherein,

[0010] The limiting component includes a connecting plate, and the main body of the tester has a third sliding groove for the connecting plate to slide. The connecting plate is provided with a stop block for limiting the position of the mounting bracket, and a second spring is arranged inside the third sliding groove between the connecting plate and the third sliding groove. The connecting plate is also provided with a pressure block.

[0011] As a further description of the above technical solution: the main body of the tester is also provided with a rotating shaft, and a baffle is rotatably connected to the rotating shaft, located above the lifting plate.

[0012] As a further description of the above technical solution: A spring is sleeved on the outer side of the sliding shaft and arranged between the lifting plate and the second sliding groove for resetting the lifting plate.

[0013] As a further description of the above technical solution: a number of second-order limiting blocks are provided on the side wall of the connecting plate at equal intervals, and the interior of the third sliding groove is provided with limiting grooves that are adapted to the second-order limiting blocks one by one.

[0014] As a further description of the above technical solution: the lifting plate is provided with guide blocks arranged parallel to the first slide groove.

[0015] As a further description of the above technical solution: The main body of the tester is provided with a limit block No. 1, which is located above the lifting plate.

[0016] Beneficial effect: By rotating the wheel, the bidirectional lead screw rotates, causing the clamp to retract and fix the cable, preventing accidental contact with the cable and thus preventing the cable connector from accidentally pulling the interface on the dielectric loss tester off the equipment, which could damage the interface of the dielectric loss tester.

[0017] In addition, when the dielectric loss tester is not in use, the clamping components can be stored by lowering the lifting plate, and with the dust cover, dust can be reduced from corroding the control panel of the dielectric loss tester. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of a dielectric loss tester proposed in this utility model;

[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 This is a cross-sectional view of the movable cavity of this utility model;

[0021] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0022] Figure 5 This is a schematic diagram of the limiting component of this utility model.

[0023] Legend:

[0024] 1. Tester body; 2. Dust cover; 3. No. 1 slide groove; 4. Mounting frame; 5. Connecting shaft; 6. Clamp; 7. Connecting frame; 8. Drive shaft; 9. Rotary wheel; 10. Two-way lead screw; 11. Socket; 12. Movable cavity; 13. Lifting plate; 14. Guide block; 15. No. 2 slide groove; 16. Slide shaft; 17. No. 1 spring; 18. Rotating shaft; 19. Baffle; 20. No. 1 limit block; 21. Pressure block; 22. Connecting plate; 23. Baffle; 24. No. 3 slide groove; 25. No. 2 spring; 26. No. 2 limit block; 27. Limit groove. Detailed Implementation

[0025] To make the technical solution of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Reference Figures 1-5 A dielectric loss tester includes a tester body 1, a dust cover 2 on the tester body 1, and a socket 11 for inserting a cable plug into the socket 11 to achieve data connection. A cable clamping assembly is located above the socket 11 on the tester body 1, and a movable cavity 12 is formed inside the tester body 1. The movable cavity 12 contains a storage assembly for storing the cable clamping assembly.

[0027] The storage component includes a sliding shaft 16 that can move up or down, located inside the movable cavity 12. A lifting plate 13 is provided at the upper end of the sliding shaft 16, and a second sliding groove 15 adapted to the lifting plate 13 is provided inside the movable cavity 12. By moving the cable clamping component above the lifting plate 13, the lifting plate 13 moves downward to place the cable clamping component inside the movable cavity 12, thus completing the storage of the cable clamping component. This allows the cable clamping component to be stored before the main body of the tester 1 is used, and allows the dust cover 2 to fit better with the operation panel of the main body of the tester 1, reducing the entry of dust.

[0028] Furthermore, the cable clamping assembly includes a mounting frame 4, and the main body 1 of the tester has a first sliding groove 3 for the mounting frame 4 to slide. It should be noted that the bottom of the mounting frame 4 can be additionally equipped with rollers, which can reduce the frictional resistance when the mounting frame 4 moves, making the mounting frame 4 move more smoothly. The mounting frame 4 is provided with a connecting shaft 5, and the lower end of the connecting shaft 5 is provided with a clamp 6. It should be noted that the clamp 6 is made of aluminum and has good toughness.

[0029] Furthermore, the cable clamping assembly also includes a drive unit, which includes a connecting frame 7 fixedly connected to the mounting frame 4. A drive shaft 8 is rotatably connected to the connecting frame 7. A rotating wheel 9 is provided on the drive shaft 8, and a bidirectional lead screw 10 is fixedly connected to the drive shaft 8. The clamp 6 has a threaded groove that matches the bidirectional lead screw 10. It should be noted that the bidirectional lead screw 10 is composed of two ordinary lead screws, and the threads on the two lead screws are arranged in opposite directions, which can tighten the open end of the clamp 6, thereby clamping the cable.

[0030] By first passing the connected cable through the middle of the clamp 6, with the clamp 6 positioned directly above the socket 11 in the usage state, and then inserting the plug at the end of the cable into the socket 11, the drive shaft 8 is rotated by rotating the wheel 9, which in turn drives the bidirectional lead screw 10 to rotate. Utilizing the material properties of the clamp 6 itself, it retracts towards the cable, clamping and fixing the cable. This avoids the problem of accidentally touching the cable during the testing and measurement of electrical equipment, which could cause the socket 11 to be pulled out and damage the equipment.

[0031] Furthermore, the main body 1 of the tester is also provided with a limit component, wherein,

[0032] The limiting component includes a connecting plate 22, and the main body 1 of the tester is provided with a third sliding groove 24 for the connecting plate 22 to slide. The connecting plate 22 is provided with a stop block 23 for limiting the position of the mounting frame 4, and a second spring 25 is provided inside the third sliding groove 24 and arranged between the connecting plate 22 and the third sliding groove 24 to lift the connecting plate 22 and the stop block 23, so as to limit the mounting frame 4. The connecting plate 22 is also provided with a pressure block 21.

[0033] When the cable clamping assembly is moved from the lifting plate 13 to directly above the socket 11, it first contacts the inclined surface of the stop block 23, and then converts into a downward pressure, causing the stop block 23 to retract downward. When the mounting bracket 4 in the cable clamping assembly passes the stop block 23, it can lift the stop block 23 on the connecting plate 22 under the action of the second spring 25, thereby locking the mounting bracket 4 directly above the socket 11, that is, limiting the cable clamping assembly directly above the socket 11, providing a stable foundation for the cable clamping assembly to clamp the cable. Afterward, if it is necessary to move the mounting bracket 4 to the lifting plate 13, the pressure block 21 needs to be pressed down first to drive the stop block 23 on the connecting plate 22 to retract downward, and then the mounting bracket 4 can be moved.

[0034] Furthermore, the main body 1 of the tester is also provided with a rotating shaft 18, on which a baffle 19 is rotatably connected. The baffle 19 is located above the lifting plate 13. After the lifting plate 13 moves downward, the baffle 19 can be rotated to the top of the cable clamping assembly, specifically to the top of the mounting bracket 4. Since the No. 1 spring 17 below always has an upward push, the top surface of the mounting bracket 4 is firmly attached to the baffle 19. Even if the main body 1 of the tester is moved, the baffle 19 and the mounting bracket 4 will not easily separate.

[0035] Furthermore, a first spring 17 is sleeved on the outer side of the sliding shaft 16 and arranged between the lifting plate 13 and the second sliding groove 15 for resetting the lifting plate 13.

[0036] Furthermore, the side wall of the connecting plate 22 is provided with a number of second limiting blocks 26 arranged at equal intervals, and the interior of the third sliding groove 24 is provided with limiting grooves 27 that are adapted to each of the second limiting blocks 26. During the process of pressing down the pressing block 21, under the limiting action of the second limiting blocks 26 and the limiting grooves 27, the problem that one end of the connecting plate 22 near the pressing block 21 is lower than the other end will not occur.

[0037] Furthermore, the lifting plate 13 is provided with a guide block 14 arranged parallel to the first slide 3, which can restrict the movement trajectory of the mounting frame 4 to always be in a straight line when the mounting frame 4 moves from inside the first slide 3 to above the lifting plate 13.

[0038] Furthermore, the main body 1 of the tester is provided with a first limiting block 20, which is located above the lifting plate 13. When the first spring 17 lifts the lifting plate 13 upward, it can limit the highest point of the lifting plate 13 to rise, so that it is always flush with the first slide groove 3.

[0039] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A dielectric loss tester, comprising a tester body (1), wherein a dust cover (2) is provided on the tester body (1), and an interface (11) is provided on the tester body (1), characterized in that, The tester body (1) is provided with a cable clamping assembly located above the socket (11), and the tester body (1) has an internal movable cavity (12). The movable cavity (12) contains a storage assembly for storing the cable clamping assembly. The storage assembly includes a sliding shaft (16) that can move up or down, located inside the movable cavity (12). The upper end of the sliding shaft (16) is provided with a lifting plate (13), and the movable cavity (12) is provided with a second sliding groove (15) that is adapted to the lifting plate (13).

2. The dielectric loss tester according to claim 1, characterized in that, The cable clamping assembly includes a mounting bracket (4), and the main body (1) of the tester has a first sliding groove (3) for the mounting bracket (4) to slide. The mounting bracket (4) is provided with a connecting shaft (5), and the lower end of the connecting shaft (5) is provided with a clamp (6). The cable clamping assembly also includes a drive unit, which includes a connecting frame (7) fixedly connected to the mounting frame (4), a drive shaft (8) rotatably connected to the connecting frame (7), a rotating wheel (9) provided on the drive shaft (8), and a bidirectional lead screw (10) fixedly connected to the drive shaft (8). The clamp (6) is provided with a threaded groove that matches the bidirectional lead screw (10).

3. The dielectric loss tester according to claim 2, characterized in that, The main body (1) of the tester is also provided with a limit component, wherein, The limiting component includes a connecting plate (22), and the main body (1) of the tester is provided with a third slide groove (24) for sliding the connecting plate (22). The connecting plate (22) is provided with a stop block (23) for limiting the position of the mounting bracket (4), and a second spring (25) is provided inside the third slide groove (24) and arranged between the connecting plate (22) and the third slide groove (24). The connecting plate (22) is also provided with a pressure block (21).

4. The dielectric loss tester according to claim 1, characterized in that, The main body (1) of the tester is also provided with a rotating shaft (18), and a baffle (19) is rotatably connected to the rotating shaft (18), located above the lifting plate (13).

5. A dielectric loss tester according to claim 1, characterized in that, A first spring (17) is sleeved on the outside of the sliding shaft (16) and arranged between the lifting plate (13) and the second sliding groove (15) for resetting the lifting plate (13).

6. A dielectric loss tester according to claim 3, characterized in that, The side wall of the connecting plate (22) is provided with several second-level limiting blocks (26) arranged at equal intervals, and the interior of the third-level sliding groove (24) is provided with limiting grooves (27) that are adapted to the second-level limiting blocks (26).

7. A dielectric loss tester according to claim 2, characterized in that, The lifting plate (13) is provided with a guide block (14) arranged parallel to the first slide (3).

8. A dielectric loss tester according to claim 1, characterized in that, The main body (1) of the tester is provided with a limit block (20) located above the lifting plate (13).

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