Device for testing magnetic performance of magnetic yoke of circuit breaker

Abstract

The utility model discloses a breaker magnet yoke magnetic performance testing device, which comprises a body, an interface, a cable and a probe, a plug at the end part of the cable is connected with the interface, a fixed block is fixed on the cable, the body is provided with a sliding chute and a connecting groove, the sliding chute is in sliding connection with an end block at the end part of a bent rod, and the probe is connected with the connecting groove. The connecting groove is in sliding connection with the bent end of the bent rod, the bent position of the bent rod is sleeved with a spring, and the bent rod is provided with an arc-shaped groove which is arranged on the cable in a sleeving mode and abuts against the fixing block. According to the utility model, after the plug at the end part of the cable is plugged with the interface, under the elastic action of the spring, the bent rod moves to be close to the fixed block, and the round sleeve is rotated, so that the round sleeve is in threaded connection with the fixed sleeve until the fixed block is propped against the bent rod, namely the bent rod is fixed, and at the moment, the cable cannot be separated from the body even if the cable is pulled; the plug of the cable cannot be separated from the interface of the body.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a circuit breaker yoke magnetic property testing device. Background Art

[0002] The yokes of circuit breakers are usually used to enhance the magnetic field. They play an important role in power systems, motors and some detection equipment. Magnetic performance testing can ensure that the yoke material meets specific technical requirements and performance standards. Currently, the performance of the yoke can be tested by using a magnetic particle flaw detector.

[0003] The probe and instrument body of the magnetic particle flaw detector are connected through a cable plug. During use, the staff needs to hold the probe to detect the surface of the yoke. However, when the probe is moving, once the cable is pulled with a large force, the instrument body will be separated from the cable plug, causing the probe to lose normal use.

[0004] Therefore, the traditional magnetic particle flaw detector can be improved so that it can avoid the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems and to provide a circuit breaker yoke magnetic property testing device.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A circuit breaker yoke magnetic property testing device comprises a body, an interface, a cable and a probe, wherein a plug at the end of the cable is connected to the interface, and a fixed block is fixed on the cable, a sliding groove and a connecting groove are provided on the body, and the sliding groove is slidably connected to the end block at the end of a bent rod, and the connecting groove is slidably connected to the bent end of the bent rod, a spring is sleeved at the bent part of the bent rod, and an arc groove sleeved on the cable and abutting against the fixed block is provided on the bent rod, and a limiter for limiting the position of the bent rod is provided on the body.

[0008] Preferably, the limiting member comprises an annular groove formed on the bent end of the bending rod, a round sleeve is rotatably connected to the annular groove, a fixing sleeve is threadedly connected to the round sleeve and is fixed to the main body, and the fixing sleeve is slidably connected to the bending part of the bending rod.

[0009] Preferably, a rotating block is rotatably connected to the circular sleeve, and a through hole is provided on the rotating block, and a slot matching the through hole is provided on the main body, a round rod passes through the through hole, and the end of the round rod is engaged with the slot.

[0010] Preferably, after the end of the round rod is inserted into the slot, it is magnetically adsorbed.

[0011] Preferably, an elastic rubber gasket is provided on the portion where the outer wall of the bent rod abuts against the fixing block.

[0012] Preferably, a ball bearing is provided on the portion where the outer wall of the end block is slidably connected to the inner wall of the slide groove.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0014] 1. After the plug at the end of the cable is plugged into the interface, under the elastic force of the spring, the bent rod moves close to the fixed block, and the round sleeve is rotated so that the round sleeve and the fixed sleeve are connected by threads until the fixed block abuts against the bent rod, thus completing the fixation of the bent rod. At this time, the cable will not be separated from the body even if it is pulled, that is, the plug of the cable cannot be separated from the interface of the body.

[0015] 2. The present application extends the round rod through the through hole into the card slot, and under the magnetic adsorption, the round rod and the card slot are stably engaged. At this time, the round sleeve cannot rotate even if subjected to external force. Therefore, the round sleeve can play a stable role, and the bent rod can stably fix the cable and the body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of the instrument and probe of the magnetic particle flaw detector provided according to an embodiment of the utility model is shown;

[0017] Figure 2 A schematic diagram of the structure of a probe part provided according to an embodiment of the utility model is shown;

[0018] Figure 3 A partial cross-sectional structural schematic diagram of a magnetic particle flaw detector provided according to an embodiment of the utility model is shown.

[0019] Legend:

[0020] 1. Main body; 2. Interface; 3. Cable; 4. Fixed block; 5. Probe; 6. Slide groove; 7. Connecting groove; 8. Fixed sleeve; 9. Slot; 10. Bending rod; 11. Arc groove; 12. End block; 13. Spring; 14. Annular groove; 15. Round sleeve; 16. Rotating block; 17. Through hole; 18. Round rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Embodiment 1:

[0023] The utility model provides a technical solution, please refer to Figure 1-3 :

[0024] A circuit breaker yoke magnetic property testing device comprises a body 1, an interface 2, a cable 3 and a probe 5, wherein a plug at the end of the cable 3 is connected to the interface 2, and a fixed block 4 is fixed on the cable 3, a slide groove 6 and a connecting groove 7 are provided on the body 1, and the slide groove 6 is slidably connected to an end block 12 at the end of a bent rod 10, and a ball bearing is provided on the portion where the outer wall of the end block 12 is slidably connected to the inner wall of the slide groove 6, so that when the end block 12 is slidably connected to the slide groove 6, no wear is caused due to friction, and the movement of the end block 12 in the slide groove 6 is smoother and the friction force is smaller, the connecting groove 7 is slidably connected to the bent end of the bent rod 10, a spring 13 is provided at the bent portion of the bent rod 10, and an arc groove 11 is provided on the bent rod 10 and is sleeved on the cable 3 and abuts against the fixed block 4, an elastic rubber gasket is provided on the portion where the outer wall of the bent rod 10 abuts against the fixed block 4, and a limiter for limiting the position of the bent rod 10 is provided on the body 1.

[0025] Embodiment 2:

[0026] The technical solution is basically the same as that of the first embodiment, except that Figure 2 As shown, the position-limiting member includes an annular groove 14 formed on the bent end of the bent rod 10, a round sleeve 15 is rotatably connected to the annular groove 14, a fixing sleeve 8 is fixed to the body 1 and is threadedly connected to the round sleeve 15, and the fixing sleeve 8 is slidably connected to the bent portion of the bent rod 10. After the round sleeve 15 is threadedly connected to the fixing sleeve 8, the position of the bent rod 10 can be fixed, so that the bent rod 10 will not be displaced even if it is subjected to external force, that is, the bent rod 10 can remain in contact with the fixing block 4, thereby fixing the fixing block 4.

[0027] Embodiment three:

[0028] The technical solution is basically the same as that of the first embodiment, except that Figure 2 and Figure 3 As shown, the round sleeve 15 is rotatably connected with a rotating block 16, and a through hole 17 is provided on the rotating block 16, and a slot 9 matching the through hole 17 is provided on the body 1, and a round rod 18 passes through the through hole 17, and the end of the round rod 18 is engaged with the slot 9, and the end of the round rod 18 is inserted into the slot 9 and is magnetically adsorbed. Therefore, the round rod 18 can maintain its position after being engaged with the slot 9, and the round rod 18 will not be separated from the slot 9.

[0029] In summary, the bending rod 10 provided in this embodiment is pulled so that the bending rod 10 is away from the interface 2 of the body 1, and then the plug at the end of the cable 3 can be plugged into the interface 2. At this time, the cable 3 is slidably connected with the arc groove 11 of the bending rod 10, and the pulling force on the bending rod 10 is released. Under the elastic force of the spring 13, the bending rod 10 moves close to the fixed block 4, and the round sleeve 15 can be rotated at this time, so that the round sleeve 15 and the fixed sleeve 8 are connected by threads until the fixed block 4 abuts against the bending rod 10, and the fixing of the bending rod 10 is completed. At this time, the bending rod 10 will not be displaced even if it is subjected to external force, so the plug of the cable 3 can be stably connected to the interface 2, and even if the cable 3 is pulled, the plug of the cable 3 will not be separated from the interface 2.

[0030] Then, the round rod 18 can be inserted into the slot 9 through the through hole 17. Under the magnetic attraction, the round rod 18 and the slot 9 are stably engaged, and the round sleeve 15 cannot rotate even if it is subjected to external force.

[0031] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A circuit breaker yoke magnetic property testing device, comprising a body (1), an interface (2), a cable (3) and a probe (5), characterized in that: The plug at the end of the cable (3) is connected to the interface (2), and a fixed block (4) is fixed on the cable (3). The body (1) is provided with a slide groove (6) and a connecting groove (7), and the slide groove (6) is slidably connected to the end block (12) at the end of the bending rod (10), and the connecting groove (7) is slidably connected to the bent end of the bending rod (10). A spring (13) is sleeved at the bending portion of the bending rod (10), and an arc groove (11) is provided on the bending rod (10) and sleeved on the cable (3) and abutting against the fixed block (4). A limiter is provided on the body (1) for limiting the position of the bending rod (10).

2. A circuit breaker yoke magnetic property testing device according to claim 1, characterized in that: The limiting member comprises an annular groove (14) formed on the bent end of the bent rod (10), a round sleeve (15) being rotatably connected to the annular groove (14), a fixing sleeve (8) being threadably connected to the round sleeve (15) being fixed to the body (1), and the fixing sleeve (8) being slidably connected to the bent portion of the bent rod (10).

3. A circuit breaker yoke magnetic property testing device according to claim 2, characterized in that: The circular sleeve (15) is rotatably connected to a rotating block (16), and a through hole (17) is provided on the rotating block (16). The body (1) is provided with a clamping groove (9) adapted to the through hole (17). A round rod (18) passes through the through hole (17), and the end of the round rod (18) is clamped with the clamping groove (9).

4. A circuit breaker yoke magnetic property testing device according to claim 3, characterized in that: After the end of the round rod (18) extends into the slot (9), it is attracted by magnetism.

5. A circuit breaker yoke magnetic property testing device according to claim 1, characterized in that: An elastic rubber gasket is provided on the portion where the outer wall of the bent rod (10) abuts against the fixing block (4).

6. A circuit breaker yoke magnetic property testing device according to claim 1, characterized in that: A ball bearing is provided on the portion where the outer wall of the end block (12) is slidably connected to the inner wall of the slide groove (6).

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