A testing device for high voltage vacuum circuit breaker production

Abstract

The present invention belongs to the technical field of dynamic vibration testing, and specifically refers to an inspection device for the production of high-voltage vacuum circuit breakers, comprising a control box, an upper connecting plate, and a lower connecting plate. A control groove is opened on the side wall of the control box, one end of the upper connecting plate is slidably connected to the upper end of the inner wall of the control groove, and one end of the lower connecting plate is slidably connected to the lower end of the inner wall of the control groove. The present invention uses two steps of preliminary detection and final detection to provide conditions for the loosening of bolts and nuts through vibration. The inspector determines the loosening of the bolts by controlling the shortening of cylinder one. If the bolts are loose, they are unqualified. At the same time, the indication of the elastic force sensor is reset to zero, and the unidirectional vibration column is controlled to periodically knock on the bolts. If the indication of the elastic force sensor changes beyond the expected value, it is unqualified.

Description

Technical Field

[0001] The invention belongs to the technical field of dynamic vibration testing, and in particular relates to a testing device for the production of high-voltage vacuum circuit breakers. Background Art

[0002] "Vacuum circuit breaker" is named because its arc extinguishing medium and the insulating medium of the contact gap after arc extinguishing are both high vacuum; it has the advantages of small size, light weight, suitable for frequent operation, and arc extinguishing without maintenance, and is widely used in distribution networks. Vacuum circuit breaker is an indoor power distribution device in 3~10kV, 50Hz three-phase AC system. It can be used for protection and control of electrical equipment in industrial and mining enterprises, power plants, and substations. It is particularly suitable for use in places that require oil-free, less maintenance and frequent operation. The circuit breaker can be configured in the central cabinet, double-layer cabinet and fixed cabinet to control and protect high-voltage electrical equipment.

[0003] As an electrical structure, vacuum circuit breakers can pose a huge safety hazard if the bolts and nuts inside them are loose when they leave the factory. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an inspection device for the production of high-voltage vacuum circuit breakers. Through the two steps of preliminary inspection and final inspection, the conditions for loosening of bolts and nuts are given by vibration. The inspector judges the loosening of the bolts by controlling the shortening of the spring. If the bolts are loose, they are unqualified. At the same time, the indication of the elastic force sensor is reset to zero, and the unidirectional vibration column is controlled to periodically knock on the bolts. If the indication of the elastic force sensor changes beyond the expected value, it is unqualified.

[0005] The technical solution adopted by the present invention is as follows: The present invention provides an inspection device for high-voltage vacuum circuit breaker production, comprising a control box, an upper connecting plate, a lower connecting plate, a bolt detection and fixing mechanism and a nut micro-motion detection mechanism, a control groove is opened on the side wall of the control box, one end of the upper connecting plate is slidably connected to the upper end of the inner wall of the control groove, the bolt detection and fixing mechanism is arranged on the other end of the upper connecting plate, one end of the lower connecting plate is slidably connected to the lower end of the inner wall of the control groove, the nut micro-motion detection mechanism is arranged on the other end of the lower connecting plate, and the axis of the bolt detection and fixing mechanism and the axis of the nut micro-motion detection mechanism are coaxially arranged.

[0006] Furthermore, the bolt detection and fixing mechanism includes a U-shaped connector and a fixing cavity, one end of the U-shaped connector is arranged on the upper connecting plate, and the fixing cavity is arranged on the other end of the U-shaped connector, the fixing cavity is arranged in the shape of a hollow cavity with an opening at the lower end, an auxiliary groove is opened at the upper end of the fixing cavity, a one-way vibration column is slidably connected to the auxiliary groove, a detection and fixing assembly is arranged in the fixing cavity, and the detection and fixing assembly is arranged in multiple groups, and the multiple groups of the detection and fixing assemblies are arranged in a circular array.

[0007] Furthermore, each group of the detection and fixing components includes a control rod and a sliding rod, an inner sliding groove is provided on the inner side wall of the fixed cavity, one end of the control rod is slidably connected to the inner sliding groove, and the other end of the control rod is slidably connected to another adjacent inner sliding groove, a trapezoidal baffle is rotatably connected to the control rod, a torsion spring is provided between the trapezoidal baffle and the control rod, a sliding groove is provided on the side wall of the fixed cavity, the sliding rod is slidably connected to the sliding groove, one end of the sliding rod is hinged to the side wall of the trapezoidal baffle, and a control bolt is rotatably linked to the other end of the sliding rod, a control spring is provided on the control bolt, the control spring is wound around the side wall of the sliding rod, and an auxiliary ring is provided on the other end of the control spring.

[0008] Wherein, the control bolt and the sliding rod are connected via threads.

[0009] Furthermore, the nut micro-motion detection mechanism includes a U-shaped auxiliary part and an external detection cavity, one end of the U-shaped auxiliary part is arranged on the lower connecting plate, and the external detection cavity is arranged on the other end of the U-shaped auxiliary part. The external detection cavity is arranged in the shape of a hollow cavity with an open upper end, and a connecting groove is opened on the bottom wall of the external detection cavity. A lifting rod is slidably connected in the connecting groove, and a hexagonal detection groove is provided at the upper end of the lifting rod.

[0010] Furthermore, an extension plate is provided on each corner of the hexagonal detection groove, each of the extension plates is provided with a detection slide groove, a control slide is slidably connected to the detection slide groove, an elastic detection mechanism is provided on the inner wall of the outer detection cavity, and the elastic detection mechanism is arranged in multiple groups, and the multiple groups of elastic detection mechanisms are arranged in a circular array.

[0011] Furthermore, the elastic detection mechanism includes a fixed plate and an elastic connecting member, the fixed plate is arranged on the inner wall of the outer detection cavity, one end of the elastic connecting member is connected to the fixed plate, and the other end of the elastic connecting member is connected to the control slide, and a coil is arranged in the fixed plate.

[0012] Furthermore, an elastic force sensor is provided on one end of the fixing plate away from the elastic connecting piece, and the elastic force sensor is connected to the elastic connecting piece.

[0013] Furthermore, a suction plate is provided on the outer side wall of the outer detection cavity, and a suction cup is provided on the suction plate.

[0014] Furthermore, a control cylinder 1 is provided on the inner upper wall of the control box, and the control cylinder 1 is connected to the upper connecting plate. A control cylinder 2 is provided on the inner bottom wall of the control box, and the control cylinder 2 is connected to the lower connecting plate.

[0015] The beneficial effects achieved by the present invention using the above structure are as follows:

[0016] (1) The preliminary test is to test the bolts. Vibration is used to create loose conditions for the bolts and nuts. Under this condition, if the bolts are not firmly fixed, the control rod in the fixing cavity will be displaced. After the tapping, the inspector will judge the looseness of the bolts by shortening the control spring. If the bolts are loose, they are unqualified.

[0017] (2) The final test is to check the nut. The reading of the elastic force sensor is reset to zero, and the unidirectional vibration column is controlled to periodically strike the bolt. If the reading of the elastic force sensor changes beyond the expected value, it is unqualified. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the three-dimensional structure of the high-voltage vacuum circuit breaker production inspection device provided by the present invention Figure 1 ;

[0019] Figure 2 A schematic diagram of the three-dimensional structure of the high-voltage vacuum circuit breaker production inspection device provided by the present invention Figure 2 ;

[0020] Figure 3 A schematic diagram of the three-dimensional structure of the bolt detection and fixing mechanism provided by the present invention;

[0021] Figure 4 A schematic diagram of the three-dimensional structure of the nut micro-motion detection mechanism provided by the present invention;

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of the fixed cavity provided by the present invention.

[0023] Among them, 1. control box, 2. upper connecting plate, 3. lower connecting plate, 4. bolt detection and fixing mechanism, 5. nut micro-motion detection mechanism, 6. control groove, 7. U-shaped connecting piece, 8. fixed cavity, 9. auxiliary groove, 10. one-way vibration column, 11. detection and fixing assembly, 12. control rod, 13. sliding rod, 14. inner sliding groove, 15. trapezoidal baffle, 16. sliding groove, 17. control spring, 18. auxiliary ring, 19. U-shaped auxiliary piece, 20. outer detection cavity, 21. connecting groove, 22. lifting rod, 23. hexagonal detection groove, 24. extension plate, 25. detection sliding groove, 26. control slide plate, 27. elastic detection mechanism, 28. fixed plate, 29. elastic connecting piece, 30. coil, 31. elastic force sensor, 32. suction plate, 33. control cylinder one, 34. control cylinder two.

[0024] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0027] like Figure 1~Figure 5 As shown, the present invention provides an inspection device for high-voltage vacuum circuit breaker production, comprising a control box 1, an upper connecting plate 2, a lower connecting plate 3, a bolt detection and fixing mechanism 4 and a nut micro-motion detection mechanism 5, wherein a control groove 6 is opened on the side wall of the control box 1, one end of the upper connecting plate 2 is slidably connected to the upper end of the inner wall of the control groove 6, the bolt detection and fixing mechanism 4 is arranged on the other end of the upper connecting plate 2, one end of the lower connecting plate 3 is slidably connected to the lower end of the inner wall of the control groove 6, the nut micro-motion detection mechanism 5 is arranged on the other end of the lower connecting plate 3, and the axis of the bolt detection and fixing mechanism 4 and the axis of the nut micro-motion detection mechanism 5 are coaxially arranged.

[0028] The bolt detection and fixing mechanism 4 includes a U-shaped connector 7 and a fixing cavity 8, one end of the U-shaped connector 7 is arranged on the upper connecting plate 2, and the fixing cavity 8 is arranged on the other end of the U-shaped connector 7, and the fixing cavity 8 is arranged in the shape of a hollow cavity with an opening at the lower end, and an auxiliary groove 9 is opened at the upper end of the fixing cavity 8, and a unidirectional vibration column 10 is slidably connected to the auxiliary groove 9, and a detection and fixing component 11 is arranged in the fixing cavity 8, and the detection and fixing component 11 is arranged in multiple groups, and the multiple groups of the detection and fixing components 11 are arranged in a ring array.

[0029] Each group of the detection and fixing components 11 includes a control rod 12 and a sliding rod 13. An inner sliding groove 14 is provided on the inner side wall of the fixed cavity 8. One end of the control rod 12 is slidably connected to the inner sliding groove 14, and the other end of the control rod 12 is slidably connected to another adjacent inner sliding groove 14. A trapezoidal baffle 15 is rotatably connected to the control rod 12, and a torsion spring is provided between the trapezoidal baffle 15 and the control rod 12. A sliding groove 16 is provided on the side wall of the fixed cavity 8, and the sliding rod 13 is slidably connected to the sliding groove 16. One end of the sliding rod 13 is hinged to the side wall of the trapezoidal baffle 15, and a control bolt is rotatably linked to the other end of the sliding rod 13. A control spring 17 is provided on the control bolt, and the control spring 17 is wound around the side wall of the sliding rod 13. An auxiliary ring 18 is provided on the other end of the control spring 17.

[0030] The control bolt and the sliding rod 13 are connected via threads.

[0031] The nut micro-motion detection mechanism 5 includes a U-shaped auxiliary part 19 and an external detection cavity 20. One end of the U-shaped auxiliary part 19 is arranged on the lower connecting plate 3, and the external detection cavity 20 is arranged on the other end of the U-shaped auxiliary part 19. The external detection cavity 20 is arranged in the shape of a hollow cavity with an open upper end. A connecting groove 21 is opened on the bottom wall of the external detection cavity 20. A lifting rod 22 is slidably connected in the connecting groove 21, and a hexagonal detection groove 23 is provided at the upper end of the lifting rod 22.

[0032] An extension plate 24 is provided on each corner of the hexagonal detection groove 23, and a detection slide groove 25 is opened on each of the extension plates 24. A control slide plate 26 is slidably connected to the detection slide groove 25. An elastic detection mechanism 27 is provided on the inner wall of the outer detection cavity 20. The elastic detection mechanism 27 is arranged in multiple groups, and the multiple groups of elastic detection mechanisms 27 are arranged in a ring array.

[0033] The elastic detection mechanism 27 includes a fixed plate 28 and an elastic connecting member 29. The fixed plate 28 is arranged on the inner wall of the outer detection cavity 20. One end of the elastic connecting member 29 is connected to the fixed plate 28, and the other end of the elastic connecting member 29 is connected to the control slide 26. A coil 30 is arranged in the fixed plate 28.

[0034] An elastic force sensor 31 is disposed on one end of the fixing plate 28 away from the elastic connecting member 29 , and the elastic force sensor 31 is connected to the elastic connecting member 29 .

[0035] A suction plate 32 is provided on the outer side wall of the outer detection cavity 20 , and a suction cup is provided on the suction plate 32 .

[0036] A control cylinder 1 33 is provided on the inner upper wall of the control box 1 , and the control cylinder 1 33 is connected to the upper connecting plate 2 . A control cylinder 2 34 is provided on the inner bottom wall of the control box 1 , and the control cylinder 2 34 is connected to the lower connecting plate 3 .

[0037] The specific usage is as follows:

[0038] In the initial state, the distance between the control bolt and the sliding rod 13 is the shortest, and the control spring 17 is in a free state. The inspector moves the device to the high-voltage vacuum circuit breaker to be inspected by holding the control box 1, and performs micro-motion inspection on the bolts and nuts installed inside the device.

[0039] First, by controlling the air cylinder 1 33 and the air cylinder 2 34, the fixing chamber 8 is buckled onto the bolt, and the outer detection chamber 20 is buckled onto the mechanical arm below that contacts the nut. At the same time, the suction cup is activated to fix the outer detection chamber 20. At the same time, the inspector's other hand can appropriately knock on the mechanical arm to provide the bolt and nut with loose conditions through vibration. In this state, if the bolt is not firmly fixed, the control rod 12 in the fixing chamber 8 will be displaced. After the knocking is completed, the inspector judges the looseness of the bolt by shortening the control spring 17. If the bolt is loose, it is unqualified.

[0040] If the control rod 12 in the fixed cavity 8 does not move, then the fixed cavity 8 is buckled on the bolt by continuing to control the extension of the cylinder 1 33, and at the same time, the bolt is controlled to rotate so that the control spring 17 connected thereto is gradually compressed. Inside the fixed cavity 8, under the control of the torsion spring and the trapezoidal baffle 15, the bolt will be firmly fixed. At the same time, in the outer detection cavity 20, the lifting rod 22 moves up so that the hexagonal detection groove 23 is buckled on the nut. Since the fixing angles of each nut are inconsistent, the hexagonal detection groove 23 will rotate parallel to the nut inside the outer detection cavity 20, and the control suction cup will be suspended. The outer detection cavity 20 will be rotated to the initial state through the elastic connecting piece 29. The control slide 26 has magnetism, and the coil 30 is energized to generate the same magnetism as the control slide 26. The elastic connecting piece 29 will be stretched. At this time, the elastic force sensor 31 has no initial indication. The unidirectional vibration column 10 is controlled to periodically knock on the bolt. If the indication change of the elastic force sensor 31 exceeds the expected value, it is unqualified.

[0041] The above is the overall workflow of the present invention, and you can repeat this step next time you use it.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. An inspection device for high voltage vacuum circuit breaker production, characterized in that: The invention comprises a control box (1), an upper connecting plate (2), a lower connecting plate (3), a bolt detection fixing mechanism (4) and a nut micro-motion detection mechanism (5), wherein a control groove (6) is provided on the side wall of the control box (1), one end of the upper connecting plate (2) is slidably connected to the upper end of the inner wall of the control groove (6), the bolt detection fixing mechanism (4) is arranged on the other end of the upper connecting plate (2), one end of the lower connecting plate (3) is slidably connected to the lower end of the inner wall of the control groove (6), the nut micro-motion detection mechanism (5) is arranged on the other end of the lower connecting plate (3), and the axis of the bolt detection fixing mechanism (4) and the axis of the nut micro-motion detection mechanism (5) are coaxially arranged; The bolt detection fixing mechanism (4) comprises a U-shaped connecting piece (7) and a fixing cavity (8), one end of the U-shaped connecting piece (7) is arranged on the upper connecting plate (2), the fixing cavity (8) is arranged on the other end of the U-shaped connecting piece (7), the fixing cavity (8) is arranged in the shape of a hollow cavity with an opening at the lower end, an auxiliary groove (9) is arranged at the upper end of the fixing cavity (8), a one-way vibration column (10) is slidably connected to the auxiliary groove (9), a detection fixing assembly (11) is arranged in the fixing cavity (8), the detection fixing assembly (11) is arranged in a plurality of groups, and the plurality of groups of the detection fixing assembly (11) are arranged in the shape of a ring array; Each group of the detection fixing components (11) comprises a control rod (12) and a sliding rod (13); an inner sliding groove (14) is provided on the inner side wall of the fixing cavity (8); one end of the control rod (12) is slidably connected to the inner sliding groove (14); the other end of the control rod (12) is slidably connected to another adjacent inner sliding groove (14); a trapezoidal baffle (15) is rotatably connected to the control rod (12); a torsion spring is provided between the trapezoidal baffle (15) and the control rod (12); A sliding groove (16) is provided on the side wall of the fixed cavity (8), the sliding rod (13) is slidably connected to the sliding groove (16), one end of the sliding rod (13) is hinged to the side wall of the trapezoidal baffle (15), the other end of the sliding rod (13) is rotatably connected to a control bolt, the control bolt is provided with a control spring (17), the control spring (17) is wound around the side wall of the sliding rod (13), and the other end of the control spring (17) is provided with an auxiliary ring (18); The nut micro-motion detection mechanism (5) comprises a U-shaped auxiliary part (19) and an external detection cavity (20), one end of the U-shaped auxiliary part (19) is arranged on the lower connecting plate (3), and the external detection cavity (20) is arranged on the other end of the U-shaped auxiliary part (19), the external detection cavity (20) is arranged in the shape of a hollow cavity with an upper end open, a connecting groove (21) is provided on the bottom wall of the external detection cavity (20), a lifting rod (22) is slidably connected in the connecting groove (21), and a hexagonal detection groove (23) is provided on the upper end of the lifting rod (22); An extension plate (24) is provided on each corner of the hexagonal detection groove (23), each of the extension plates (24) is provided with a detection slide groove (25), a control slide plate (26) is slidably connected to the detection slide groove (25), an elastic detection mechanism (27) is provided on the inner side wall of the outer detection cavity (20), the elastic detection mechanism (27) is arranged in a plurality of groups, and the plurality of groups of the elastic detection mechanisms (27) are arranged in a ring array; The elastic detection mechanism (27) comprises a fixing plate (28) and an elastic connecting member (29), wherein the fixing plate (28) is arranged on the inner side wall of the outer detection cavity (20), one end of the elastic connecting member (29) is connected to the fixing plate (28), and the other end of the elastic connecting member (29) is connected to the control slide plate (26), and a coil (30) is arranged inside the fixing plate (28); An elastic force sensor (31) is provided on one end of the fixing plate (28) away from the elastic connecting member (29), and the elastic force sensor (31) is connected to the elastic connecting member (29).

2. The inspection device for high voltage vacuum circuit breaker production according to claim 1, characterized in that: The control bolt and the sliding rod (13) are connected via threads.

3. The inspection device for high voltage vacuum circuit breaker production according to claim 2, characterized in that: A suction plate (32) is provided on the outer side wall of the outer detection cavity (20), and a sucker is provided on the suction plate (32).

4. The inspection device for high voltage vacuum circuit breaker production according to claim 3, characterized in that: A control cylinder 1 (33) is provided on the inner upper wall of the control box (1), and the control cylinder 1 (33) is connected to the upper connecting plate (2). A control cylinder 2 (34) is provided on the inner bottom wall of the control box (1), and the control cylinder 2 (34) is connected to the lower connecting plate (3).

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