A vacuum circuit breaker online detection device

Abstract

The present invention aims to provide an online detection device for a vacuum circuit breaker, which is not only movable but also capable of forming a stable detection platform with strong safety and reliability. The device comprises a transport trolley, a roller is arranged at the bottom of the transport trolley, a vacuum arc extinguishing chamber is placed on the upper surface of the transport trolley, a placement groove is arranged on the right side of the transport trolley, a vacuum degree tester is arranged in the placement groove, the roller of the transport trolley is retractable, a support plate is arranged on the lower surface of the transport trolley, and a clamping mechanism capable of clamping or releasing the vacuum arc extinguishing chamber is arranged on the upper end surface of the transport trolley.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum circuit breaker production equipment, and in particular to an online detection device for a vacuum circuit breaker. 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. During the production process of vacuum circuit breakers, the vacuum degree of the vacuum arc extinguishing chamber needs to be tested. If the vacuum degree of the vacuum arc extinguishing chamber does not meet the standard, the vacuum degree of the vacuum arc extinguishing chamber will decrease during use, resulting in the circuit breaker being unable to extinguish the arc, affecting the safe operation of the unit.

[0003] A high-voltage vacuum circuit breaker production inspection device is disclosed in the existing patent database, and the patent application number is: 202310822256.X, which includes a transport trolley, a vacuum arc chamber is placed on the upper surface of the transport trolley, a placement slot is opened on the right side of the transport trolley, and a wire placement device is fixedly connected to the bottom of the placement slot; the wire placement device includes: a wire placement mechanism, which is a plate-like structure, and the wire placement mechanism can be used to take and place wires; an insulating plate; a clamping mechanism, which can be elastically deformed under the action of pressure, but when the pressure disappears, the clamping mechanism can quickly recover; a rotating mechanism, which has a rotating structure, and the rotating mechanism can seal the wire placement mechanism when it is closed, and after opening, the rotating mechanism can neatly arrange the wires. This detection device can detect the vacuum degree of the arc chamber, and can store and use various wires during detection, neatly placed, and occupy a small space. However, since this detection device is a transport trolley, the vacuum arc chamber is not fixed during the detection process, which has safety hazards and the risk of overturning. Summary of the invention

[0004] In this regard, the present invention aims to provide an online detection device for a vacuum circuit breaker, which is not only movable but also can form a stable detection platform with strong safety and reliability.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A vacuum circuit breaker online detection device comprises a transport trolley, a roller is arranged at the bottom of the transport trolley, a vacuum arc extinguishing chamber is placed on the upper surface of the transport trolley, a placement groove is arranged on the right side of the transport trolley, a vacuum tester is arranged in the placement groove, the roller of the transport trolley is retractable, a support plate is arranged on the lower surface of the transport trolley, and the lower surface of the support plate is against the ground when the roller is retracted upward; a clamping mechanism capable of clamping or releasing the vacuum arc extinguishing chamber is arranged on the upper end surface of the transport trolley, the clamping mechanism comprises a fixed ring, a movable ring, a pressure sensor, a driving unit and a controller, a side surface of the fixed ring is provided with a slide groove for horizontal embedding of the movable ring, a part of the movable ring is slidably arranged in the slide groove, and the area of ​​the overlapping part of the fixed ring and the movable ring can be changed, a pressure sensor is arranged on the side wall of the fixed ring close to the movable ring, the lower end of the movable ring is connected with a driving unit capable of driving the movable ring to move, and the driving unit and the pressure sensor are electrically connected to the controller respectively.

[0007] Compared with the prior art, the present invention has the following beneficial effects:

[0008] In the present invention, the roller is changed into a retractable structure so that the roller can be retracted upward or extended downward. When the transport trolley moves to the detection position, the position of the roller is adjusted so that the bottom of the support plate is abutted against the ground, so that the transport trolley can stably maintain its position and cannot move. In combination with the clamping mechanism of the vacuum arc chamber, the vacuum arc chamber is effectively positioned to ensure the stability of the entire detection platform, prevent overturning, and ensure stability and reliability. When in use, the lower end of the vacuum arc chamber is placed in the overlapping part of the fixed ring and the movable ring, and then the driving unit is started by the controller. The driving unit drives the movable ring to move to change the area of ​​the overlapping part of the two and clamp the vacuum arc chamber. When clamped to a certain pressure, the pressure sensor is triggered and a signal is sent to the controller to control the driving cylinder to stop. After completing the vacuum degree detection, the driving unit is controlled by the operating controller to control the movable ring to move outward to release it, so as to facilitate the clamping of the vacuum arc chamber next time.

[0009] As an improvement, rubber pads are respectively provided on the side walls of the overlapping parts of the fixed ring and the movable ring. In this way, they can play a buffering role, prevent the outer shell of the vacuum arc chamber from making hard contact with the pressure sensor, causing damage to the outer shell of the vacuum arc chamber or the pressure sensor, and extend the service life.

[0010] As an improvement, there are several clamping mechanisms, which are arranged in intervals. A base is provided below the clamping mechanism, and a fixing frame is provided on the base. The clamping mechanism is located on the inner side of the fixing frame. A fixing rib is also provided on the inner side of the fixing frame. One end of the fixing rib is fixedly connected to the fixing frame, and the other end is connected to the fixing ring. The driving unit is fixed inside the base, and a makeshift groove for the driving unit to move is provided at the upper end of the base. In this way, the clamping mechanism can be firmly fixed to the base, so that the transport trolley can be assembled separately from the base, which is more convenient to use. During specific use, the transport trolley and the base can be connected by bolts.

[0011] As an improvement, the diameter of the movable ring is smaller than the diameter of the fixed ring.

[0012] As an improvement, the driving unit includes a driving cylinder, a cross bar and several L-shaped brackets. The top end of the L-shaped bracket is fixedly connected to the movable ring, the lower end of the L-shaped bracket is connected to the cross bar, the rear end of the cross bar is connected to the output shaft of the driving cylinder, and the driving cylinder is electrically connected to the controller. In this way, the cross bar is driven to move by the driving cylinder, thereby driving the L-shaped bracket to move, and then driving the movable ring to move, thereby clamping and loosening.

[0013] As an improvement, the transport trolley includes a base and a tempered glass arranged at the front end of the base, so that during the inspection, the operator can watch the inspection process behind the tempered glass, which is safer.

[0014] As an improvement, a roller mounting structure is provided on the base, and the mounting structure includes a threaded hole penetrating the base and a screw threaded in the threaded hole. A screwing portion is provided at the upper end of the screw, and the lower end of the screw is fixedly connected to the roller. A countersunk hole is provided at the top of the threaded hole. In this way, the position of the roller can be adjusted by adjusting the length of the lower end of the screw, and the roller can be retracted upward so that the support plate contacts the ground, thereby achieving the stability of the detection platform and avoiding shaking. When moving to the required position, it is only necessary to extend the screw to an appropriate length, lift the transport trolley upward, and separate the support plate from the ground. The structure is simple and switching is convenient.

[0015] As an improvement, the base is a rectangular structure, and the mounting structures are arranged on the four corners of the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a schematic structural diagram of an online detection device for a vacuum circuit breaker.

[0017] Figure 2 It is a schematic structural diagram of the clamping mechanism in the present invention.

[0018] Figure 3 It is a cross-sectional perspective view of the clamping mechanism and the base in the present invention.

[0019] Figure 4 It is a schematic diagram of the local structure of the moving ring in the present invention.

[0020] Figure 5 It is a schematic diagram of the structure of the fixing ring in the present invention.

[0021] As shown in the figure, 1. roller, 2. vacuum interrupter, 3. placement groove, 4. vacuum tester, 5. support plate, 6. fixed ring, 7. movable ring, 8. pressure sensor, 9. controller, 10. slide groove, 11. rubber pad, 12. base, 13. fixed frame, 14. fixed rib, 15. make way groove, 16. drive cylinder, 17. cross bar, 18. L-shaped bracket, 19. tempered glass, 20. screw, 21. screwing part, 22. base. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative, and the present invention is not limited to the various structures recorded in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] For details, please refer to the attached Figure 1-5 :

[0024] A vacuum circuit breaker online detection device comprises a transport trolley, a roller 1 is arranged at the bottom of the transport trolley, a vacuum interrupter 2 is placed on the upper surface of the transport trolley, a placement slot 3 is arranged on the right side of the transport trolley, a vacuum tester 4 is arranged in the placement slot 3, the roller 1 of the transport trolley is retractable, a support plate 5 is arranged on the lower surface of the transport trolley, and when the roller 1 is retracted upward, the lower surface of the support plate 5 is against the ground; the upper end surface of the transport trolley is provided with a clamping mechanism capable of clamping or releasing the vacuum interrupter 2, and the clamping mechanism can be clamped or released by the clamping mechanism. The holding mechanism includes a fixed ring 6, a movable ring 7, a pressure sensor 8, a driving unit and a controller 9. A sliding groove 10 is opened on the side of the fixed ring 6 for the movable ring 7 to be horizontally embedded. A part of the movable ring 7 can be slidably arranged in the sliding groove 10, and the area of ​​the overlapping part of the fixed ring 6 and the movable ring 7 can be changed. A pressure sensor 8 is arranged on the side wall of the fixed ring 6 on the side close to the movable ring 7. The lower end of the movable ring 7 is connected to a driving unit that can drive the movable ring 7 to move. The driving unit and the pressure sensor 8 are electrically connected to the controller 9 respectively. In the present invention, the roller 1 is changed into a retractable structure so that the roller 1 can be retracted upward or extended downward. When the transport trolley moves to the detection position, the position of the roller 1 is adjusted so that the bottom of the support plate 5 is against the ground, so that the transport trolley can stably maintain its position and cannot move. In combination with the clamping mechanism of the vacuum arc chamber 2, the vacuum arc chamber 2 is effectively positioned to ensure the stability of the entire detection platform and prevent overturning. The vacuum arc chamber 2 is stable and reliable. When in use, the lower end of the vacuum arc chamber 2 is placed in the overlapping part of the fixed ring 6 and the movable ring 7, and then the driving unit is started by the controller 9. The driving unit drives the movable ring 7 to move to change the area of ​​the overlapping part of the two and clamp the vacuum arc chamber 2. When clamped to a certain pressure, the pressure sensor 8 is triggered and a signal is sent to the controller 9 to control the driving cylinder 16 to stop. After the vacuum degree detection is completed, the driving unit is controlled by operating the controller 9 to control the movable ring 7 to move outward to release it for the next clamping of the vacuum arc chamber 2.

[0025] In this embodiment, rubber pads 11 are respectively provided on the side walls of the overlapping parts of the fixed ring 6 and the movable ring 7, so that they can play a buffering role, prevent the outer shell of the vacuum arc chamber 2 from making hard contact with the pressure sensor 8, thereby preventing damage to the outer shell of the vacuum arc chamber 2 or the pressure sensor 8 and extending the service life.

[0026] In this embodiment, there are several clamping mechanisms, which are arranged in intervals. A base 12 is provided below the clamping mechanism, and a fixing frame 13 is provided on the base 12. The clamping mechanism is located on the inner side of the fixing frame 13. A fixing rib 14 is also provided on the inner side of the fixing frame 13. One end of the fixing rib 14 is fixedly connected to the fixing frame 13, and the other end is connected to the fixing ring 6. The driving unit is fixed inside the base 12, and a make way groove 15 for the driving unit to move is provided at the upper end of the base 12. In this way, the clamping mechanism can be firmly fixed on the base 12, so that the transport trolley can be assembled separately from the base 12, which is more convenient to use. When used, the transport trolley and the base 12 can be connected by bolts.

[0027] In this embodiment, the diameter of the movable ring 7 is smaller than the diameter of the fixed ring 6 .

[0028] In this embodiment, the driving unit includes a driving cylinder 16, a cross bar 17 and a plurality of L-shaped brackets 18. The top end of the L-shaped bracket 18 is fixedly connected to the movable ring 7, and the lower end of the L-shaped bracket 18 is connected to the cross bar 17. The rear end of the cross bar 17 is connected to the output shaft of the driving cylinder 16. The driving cylinder 16 is electrically connected to the controller 9. In this way, the cross bar 17 is driven by the driving cylinder 16 to move, thereby driving the L-shaped bracket 18 to move, and then driving the movable ring 7 to move, thereby performing the clamping and loosening actions.

[0029] In this embodiment, the transport trolley includes a base 22 and a tempered glass 19 disposed at the front end of the base 22. In this way, during the inspection, the operator can watch the inspection process from behind the tempered glass 19, which is safer.

[0030] In this embodiment, a mounting structure of the roller 1 is provided on the base 22, and the mounting structure includes a threaded hole penetrating the base 22 and a screw 20 screwed in the threaded hole. A screwing portion 21 is provided at the upper end of the screw 20, and the lower end of the screw 20 is fixedly connected to the roller. A countersunk hole is provided at the top of the threaded hole. In this way, the position of the roller 1 can be adjusted by adjusting the extended length of the lower end of the screw 20, and the roller 1 can be retracted upward so that the support plate 5 is in contact with the ground, thereby achieving the stability of the detection platform and avoiding shaking. When moving to the required position, it is only necessary to extend the screw 20 to a suitable length, lift the transport trolley upward, and separate the support plate 5 from the ground. The structure is simple and switching is convenient.

[0031] In this embodiment, the screwing portion 21 is a hexagonal structure.

[0032] In this embodiment, the base 22 is a rectangular structure, and the mounting structures are disposed on the four corners of the base 22 .

[0033] In this embodiment, a mounting groove for mounting a pressure sensor 8 is provided on the inner side of the movable ring 7 . The pressure sensor 8 is a matrix pressure sensor 8 , and a rubber pad 11 covers the outside of the mounting groove.

[0034]

[0035] https: / / item.jd.com / 10041010106621.html?cu=true&utm_source=www.baidu.com&utm_medium=tuiguang&utm_campaign=t_1003608409_&utm_term=9284c35d66af467c8f827b7766c0718e, so it will not be elaborated in detail here.

[0036] In this embodiment, the controller 9 is connected to the driving cylinder 16 and the pressure sensor 8 through cables, and a switch for the driving cylinder 16 is provided on the controller 9 .

[0037] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0038] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0039] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An online detection device for a vacuum circuit breaker, comprising a transport trolley, a roller is arranged at the bottom of the transport trolley, a vacuum interrupter is placed on the upper surface of the transport trolley, a placement slot is arranged on the right side of the transport trolley, a vacuum tester is arranged in the placement slot, and the characteristics are as follows: The rollers of the transport trolley are retractable, and a support plate is provided on the lower surface of the transport trolley. When the rollers are retracted upward, the lower surface of the support plate abuts against the ground. The upper end surface of the transport trolley is provided with a clamping mechanism capable of clamping or releasing the vacuum arc chamber, and the clamping mechanism includes a fixed ring, a movable ring, a pressure sensor, a driving unit and a controller. A sliding groove for horizontal embedding of the movable ring is opened on the side of the fixed ring, and a part of the movable ring can be slidably arranged in the sliding groove, and the area of ​​the overlapping part of the fixed ring and the movable ring can be changed. A pressure sensor is arranged on the side wall of the fixed ring close to the movable ring, and the lower end of the movable ring is connected to a driving unit capable of driving the movable ring to move, and the driving unit and the pressure sensor are electrically connected to the controller respectively.

2. The vacuum circuit breaker online detection device according to claim 1, characterized in that: Rubber pads are respectively arranged on the side walls of the overlapping parts of the fixed ring and the movable ring.

3. The vacuum circuit breaker online detection device according to claim 1, characterized in that: There are several clamping mechanisms, which are arranged at intervals. A base is provided below the clamping mechanism, a fixing frame is provided on the base, the clamping mechanism is located on the inner side of the fixing frame, and a fixing rib is also provided on the inner side of the fixing frame. One end of the fixing rib is fixedly connected to the fixing frame, and the other end is connected to the fixing ring. The driving unit is fixed inside the base, and a make way groove for the driving unit to move is provided at the upper end of the base.

4. The vacuum circuit breaker online detection device according to claim 1, characterized in that: The diameter of the movable ring is smaller than the diameter of the fixed ring.

5. The vacuum circuit breaker online detection device according to claim 1, characterized in that: The driving unit includes a driving cylinder, a cross bar and a plurality of L-shaped brackets. The top end of the L-shaped bracket is fixedly connected to the movable ring, the lower end of the L-shaped bracket is connected to the cross bar, the rear end of the cross bar is connected to the output shaft of the driving cylinder, and the driving cylinder is electrically connected to the controller.

6. The vacuum circuit breaker online detection device according to claim 1, characterized in that: The transport trolley comprises a base and tempered glass arranged at the front end of the base.

7. The vacuum circuit breaker online detection device according to claim 6, characterized in that: The base is provided with a roller mounting structure, which includes a threaded hole penetrating the base and a screw threaded in the threaded hole. The upper end of the screw is provided with a screwing portion, the lower end of the screw is fixedly connected to the roller, and a countersunk hole is opened at the top of the threaded hole.

8. The vacuum circuit breaker online detection device according to claim 7, characterized in that: The base is a rectangular structure, and the mounting structures are arranged on the four corners of the base.

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