CN218333595U

CN218333595U - Operating mechanism of vacuum circuit breaker

Info

Publication number: CN218333595U
Application number: CN202222758735.3U
Authority: CN
Inventors: 潘宝福; 林观日; 潘浩杰; 包晓燕
Original assignee: Yueqing Bangli Electric Co ltd
Current assignee: Yueqing Bangli Electric Co ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-01-17
Anticipated expiration: 2032-10-19

Abstract

The utility model discloses an operating mechanism of a vacuum circuit breaker, which comprises a frame, a driving motor, a speed reducer, an operating shaft, a gear pair, a main shaft, a fixed shaft, a first spring seat, a second spring seat and an energy storage spring, wherein the main shaft is linked with a swing arm; the supporting rod is mounted on the fixed shaft, a rotating shaft is arranged on the side portion of the supporting rod, a shaft sleeve is arranged on the second spring seat and sleeved on the periphery of the rotating shaft, a first limiting screw is in threaded connection with the end portion of the rotating shaft, a first gasket is clamped between the shaft sleeve and a screw head of the first limiting screw, and a second gasket is clamped between the shaft sleeve and the side portion of the supporting rod. The utility model discloses can guarantee that energy storage spring's deformation direction remains the central line extending direction at self throughout to effectively promote energy storage spring's life, can guarantee the normal use of circuit breaker simultaneously.

Description

Operating mechanism of vacuum circuit breaker

Technical Field

The utility model relates to a circuit breaker technical field specifically is an operating device who relates to a vacuum circuit breaker.

Background

The operating mechanism is in a vacuum circuit breaker, and generally, the operating mechanism includes a motor operating mechanism, a pneumatic operating mechanism, a hydraulic operating mechanism, a permanent magnet operating mechanism, a spring operating mechanism, and the like.

The spring operating mechanism is a mechanical operating mechanism which takes a spring as an energy storage element. The energy storage of the energy storage spring is completed by the motor through a speed reducing device and is kept in an energy storage state through a locking system. When the switch is switched off, the lock catch is released by means of magnetic force, the energy storage spring releases energy, and the contact is moved through the mechanical transmission unit. Energy storage spring among prior art's spring operating device, its one end is connected with the epaxial first spring holder of main shaft swing, the other end is connected with the epaxial second spring holder of support body fixing, energy storage spring's both ends are connected respectively on first spring holder and second spring holder, because can not produce circumferential direction between the second spring holder among traditional spring operating device and the fixed axle, therefore, it rotates to drive the swing arm at the main shaft, make the flexible in-process of energy storage spring, energy storage spring is not whole to produce deformation along the extending direction of self central line, its one end that is close to the fixed axle can take place local distortion, after the frequent action, energy storage spring takes place the damage easily, influence the normal use of circuit breaker.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a vacuum circuit breaker's operating device, the utility model discloses can guarantee that energy storage spring's deformation direction remains throughout at the central line extending direction of self to effectively promote energy storage spring's life, can guarantee the normal use of circuit breaker simultaneously.

In order to achieve the above object, the utility model provides a following technical scheme: the operating mechanism of the vacuum circuit breaker comprises a rack, a driving motor, a speed reducer, an operating shaft, a gear pair, a main shaft, a fixed shaft, a first spring seat, a second spring seat and an energy storage spring, wherein the driving motor, the speed reducer, the operating shaft and the fixed shaft are arranged on the rack; install the bracing piece on the fixed axle, the bracing piece lateral part is equipped with the pivot, be equipped with the axle sleeve on the second spring holder, the axle sleeve cover is established in the pivot periphery, pivot tip threaded connection has the first spacing screw that is used for playing limiting displacement to the axle sleeve, the axle sleeve is kept away from and is equipped with first gasket between the one end of bracing piece and the screw head of first spacing screw, the axle sleeve is close to and is equipped with the second gasket between the one end of bracing piece and the bracing piece lateral part.

Through adopting above-mentioned technical scheme, the mode that adopts swing joint with second spring holder and fixed axle replaces original fixed connection's mode, the second spring holder can produce circumferential direction relative to the fixed axle promptly, carry out the axial restriction to the second spring holder simultaneously, make the second spring holder can take place corresponding deflection along with the angle change that produces when the energy storage activity, thereby guarantee that the deformation direction of energy storage spring remains the central line extending direction at self throughout, and then effectively promote energy storage spring's life, the stability of spring operating device job has effectively been promoted in this design simultaneously, can guarantee circuit breaker's normal use.

The utility model discloses further set up to, the bottom of fixed axle is equipped with polygon location portion, be equipped with in the frame with the polygon locating hole that polygon location portion agrees with mutually, the tip threaded connection of polygon location portion has the locking screw, the screw head of locking screw supports the opposite side of tightly holding energy spring relatively in the frame.

By adopting the technical scheme, the positioning installation of the fixed shaft can be realized, the installation structure is simple and reliable, and the disassembly and the assembly are very convenient.

The utility model discloses further set up to, the locking screw is the screw of taking the gasket.

Through adopting above-mentioned technical scheme, can promote the area of contact of the screw head of locking screw and frame, promote the steadiness of fixed axle installation.

The utility model discloses further set up to, be equipped with the screw thread section on the bracing piece, the slide opening has been seted up along the axial on the screw thread section, be equipped with on the fixed axle with the slide opening constitutes sliding fit's slide, the position that corresponds the slide both sides in the screw thread section is equipped with a lock nut respectively, and two lock nuts all support tightly on the slide.

Through adopting above-mentioned technical scheme, through adjusting the relative position of fixed axle sliding plate portion at bracing piece screw thread section upper sliding hole to adjust energy storage spring's elasticity, and lock nut can play spacing locking's effect to the bracing piece.

The utility model discloses further set up to, the round hole has been seted up to the position of the relative bracing piece top on the slide, it has the spacer pin to peg graft on the round hole.

Through adopting above-mentioned technical scheme, the design of spacer pin can prevent that lock nut from taking place to loosen and take off and lead to the fixed axle skateboard portion to break away from the slide opening of bracing piece, effectively avoids the emergence of incident.

The utility model discloses further set up to, set up a plurality of energy storage spring male first locating holes that supply on the first spring holder, set up a plurality of energy storage spring male second locating holes that supply on the second spring holder.

Through adopting above-mentioned technical scheme, energy storage spring's installation can be realized to energy storage spring both ends insert corresponding locating hole, and it is very convenient to operate.

The utility model discloses further set up to, be equipped with the driving lever in the swing arm, the driving lever lateral part is equipped with the support flange that extends to the periphery, first spring holder cover is established in the driving lever periphery, the upper end threaded connection of driving lever has and is used for pressing the second spring holder at the second spacing screw on the support flange to press from both sides between the screw head of second spacing screw and the first spring holder and be equipped with the third gasket.

Through adopting above-mentioned technical scheme, the rotatable coupling of first spring holder and swing arm has been realized.

Drawings

Fig. 1 is a schematic view of the overall first viewing angle structure of the present invention;

fig. 2 is a schematic view of a second overall view structure of the present invention;

fig. 3 is a schematic view of the mounting structure of the energy storage spring of the present invention;

FIG. 4 is a schematic view of the mounting structure of the second spring seat of the present invention;

fig. 5 is a schematic view of the mounting structure of the first spring seat of the present invention.

In the figure: 1. a frame; 2. a drive motor; 3. a speed reducer; 4. an operating shaft; 5. a gear pair; 6. a main shaft; 7. a fixed shaft; 8. a first spring seat; 9. a second spring seat; 10. an energy storage spring; 11. swinging arms; 12. a support bar; 13. a rotating shaft; 14. a shaft sleeve; 15. a first limit screw; 16. a first spacer; 17. a second gasket; 18. a polygonal positioning portion; 19. polygonal positioning holes; 20. a locking screw; 21. a threaded segment; 22. a slide hole; 23. a slide plate portion; 24. locking the nut; 26. a circular hole; 27. a spacing pin; 28. a first positioning hole; 29. a second positioning hole; 30. a deflector rod; 31. a support flange; 32. a second limit screw; 33. and a third gasket.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b): the operating mechanism of the vacuum circuit breaker shown in fig. 1 to 5 comprises a frame 1, a driving motor 2, a speed reducer 3, an operating shaft 4, a gear pair 5, a main shaft 6, a fixed shaft 7, a first spring seat 8, a second spring seat 9 and an energy storage spring 10, wherein the driving motor 2, the speed reducer 3, the operating shaft 4 and the fixed shaft 7 are installed on the frame 1, a motor shaft of the driving motor 2 is in linkage connection with an input end of the speed reducer 3, an output end of the speed reducer 3 is in linkage connection with the operating shaft 4, the operating shaft 4 is in linkage connection with the main shaft 6 through the gear pair 5, a swing arm 11 is in linkage connection with the main shaft 6, the main shaft 6 and the swing arm 11 rotate synchronously, the first spring seat 8 is rotatably installed on the swing arm 11, the second spring seat 9 is installed on the fixed shaft 7, and two ends of the energy storage spring 10 are respectively installed on the first spring seat 8 and the second spring seat 9; the utility model discloses a bracing piece, including fixed axle 7, bracing piece 12, the lateral part of bracing piece is equipped with pivot 13, and pivot 13 can weld on bracing piece 12, and the two also can be formula structure as an organic whole, be equipped with axle sleeve 14 on the second spring seat 9, axle sleeve 14 welds on second spring seat 9, axle sleeve 14 cover is established in pivot 13 periphery, and axle sleeve 14 can revolute axle sleeve 13 and rotate, 13 tip threaded connection of pivot has the first spacing screw 15 that is used for playing limiting displacement to axle sleeve 14, it is equipped with first gasket 16 to press from both sides between the screw head of the one end that the bracing piece 12 was kept away from to axle sleeve 14 and first spacing screw 15, it is equipped with second gasket 17 to press from both sides between the one end that axle sleeve 14 is close to bracing piece 12 and the bracing piece 12 lateral part, and first gasket 16 and second gasket 17 can play the effect of protection axle sleeve 14, reduce the frictional force that axle sleeve 14 received simultaneously. Replace original fixed connection's mode with second spring holder 9 and fixed axle 7 adoption swing joint's mode, second spring holder 9 can produce circumferential direction relatively fixed axle 7 promptly, carry out the axial restriction to second spring holder 9 simultaneously, make second spring holder 9 can be along with the angle change that produces when the energy storage activity and take place corresponding deflection, thereby guarantee that energy storage spring 10's deformation direction remains the central line extending direction at self throughout, and then effectively promote energy storage spring 10's life, this design has effectively promoted spring operating device job stabilization nature simultaneously, can guarantee circuit breaker's normal use.

As shown in fig. 2 to 4, the bottom end of the fixed shaft 7 is provided with a polygonal positioning portion 18, the polygonal positioning portion 18 is specifically a shape formed by cutting two sides of a circular cross section, the frame 1 is provided with a polygonal positioning hole 19 matched with the polygonal positioning portion 18, the end portion of the polygonal positioning portion 18 is in threaded connection with a locking screw 20, and the screw head of the locking screw 20 abuts against the other side of the frame 1 opposite to the energy storage spring 10, so that the locking screw 20 and the fixed shaft 7 are clamped on the frame 1, thereby realizing the positioning and installation of the fixed shaft 7, and the mounting structure is simple and reliable, and the mounting and dismounting are very convenient.

Wherein the locking screw 20 is a screw with a washer. The screw with the gasket can improve the contact area between the screw head of the locking screw and the rack 1 and improve the installation stability of the fixing shaft 7.

As shown in fig. 3, the support rod 12 is provided with a threaded section 21, the threaded section 21 is provided with a slide hole 22 along the axial direction, the fixed shaft 7 is provided with a slide plate portion 23 which is in sliding fit with the slide hole 22, two locking nuts 24 are respectively arranged on the threaded section 21 corresponding to two sides of the slide plate portion 23, the two locking nuts 24 are both abutted against the slide plate portion 23, and when the two locking nuts 24 are abutted against the slide plate portion 23, the vertical position limitation of the support rod 12 on the fixed shaft 7 is realized through the friction force between the locking nuts and the slide plate portion 23. The tightness of the energy storage spring 10 can be adjusted by adjusting the relative position of the slide plate part 23 of the fixed shaft 7 and the slide hole 22 on the threaded section 21 of the support rod 12, and the locking nut 24 can play a role of limiting and locking the support rod 12.

As shown in fig. 3, a circular hole 26 is formed in the slide plate portion 23 at a position above the support rod 12, a limit pin 27 is inserted into the circular hole 26, and the limit pin 27 is in interference fit with the circular hole 26. The design of the limit pin 27 can prevent the locking nut 24 from loosening to cause the sliding plate part 23 of the fixed shaft 7 to be separated from the sliding hole 22 of the support rod 12, and effectively avoid safety accidents.

As shown in fig. 2, the first spring seat 8 is provided with a plurality of first positioning holes 28 into which the energy storage springs 10 are inserted, and the second spring seat 9 is provided with a plurality of second positioning holes 29 into which the energy storage springs 10 are inserted. The energy storage spring 10 can be installed by inserting the two ends of the energy storage spring 10 into the corresponding positioning holes, and the operation is very convenient.

As shown in fig. 5, a shift lever 30 is disposed on the swing arm 11, a support flange 31 extending to the outer periphery is disposed at a side portion of the shift lever 30, the first spring seat 8 is sleeved on the outer periphery of the shift lever 30, that is, a rotation hole for inserting the shift lever 30 is disposed on the first spring seat 8, a second limit screw 32 for pressing the second spring seat 9 on the support flange 31 is connected to an upper end of the shift lever 30 through a thread, and a third gasket 33 is interposed between a screw head of the second limit screw 32 and the first spring seat 8. This design enables a rotatable connection of the first spring seat 8 with the swing arm 11.

Claims

1. An operating mechanism of a vacuum circuit breaker comprises a rack (1), a driving motor (2), a speed reducer (3), an operating shaft (4), a gear pair (5), a main shaft (6), a fixed shaft (7), a first spring seat (8), a second spring seat (9) and an energy storage spring (10), wherein the driving motor (2), the speed reducer (3), the operating shaft (4) and the fixed shaft (7) are installed on the rack (1), a motor shaft of the driving motor (2) is in linkage connection with an input end of the speed reducer (3), an output end of the speed reducer (3) is in linkage connection with the operating shaft (4), the operating shaft (4) is in linkage connection with the main shaft (6) through the gear pair (5), a swing arm (11) is in linkage connection with the main shaft (6), the first spring seat (8) is rotatably installed on the swing arm (11), the second spring seat (9) is installed on the fixed shaft (7), and two ends of the energy storage spring (10) are respectively installed on the first spring seat (8) and the second spring seat (9); the method is characterized in that: install bracing piece (12) on fixed axle (7), bracing piece (12) lateral part is equipped with pivot (13), be equipped with axle sleeve (14) on second spring holder (9), axle sleeve (14) cover is established in pivot (13) periphery, pivot (13) tip threaded connection has first spacing screw (15) that are used for playing limiting displacement to axle sleeve (14), press from both sides between the screw head of the one end that bracing piece (12) were kept away from in axle sleeve (14) and first spacing screw (15) and be equipped with first gasket (16), press from both sides between the one end that axle sleeve (14) is close to bracing piece (12) and bracing piece (12) lateral part and be equipped with second gasket (17).

2. The operating mechanism of the vacuum circuit breaker according to claim 1, wherein: the bottom of fixed axle (7) is equipped with polygon location portion (18), be equipped with on frame (1) with polygon locating hole (19) that polygon location portion (18) agree with mutually, the tip threaded connection of polygon location portion (18) has locking screw (20), the screw head of locking screw (20) supports tightly the opposite side of relative energy storage spring (10) on frame (1).

3. The operating mechanism of the vacuum circuit breaker according to claim 2, wherein: the locking screw (20) is a screw with a gasket.

4. The operating mechanism of the vacuum circuit breaker according to claim 1, wherein: the supporting rod is characterized in that a threaded section (21) is arranged on the supporting rod (12), a slide hole (22) is formed in the threaded section (21) in the axial direction, a slide plate portion (23) which is in sliding fit with the slide hole (22) is arranged on the fixing shaft (7), locking nuts (24) are arranged on the threaded section (21) in positions corresponding to two sides of the slide plate portion (23) respectively, and the two locking nuts (24) are all tightly abutted to the slide plate portion (23).

5. The operating mechanism of the vacuum circuit breaker according to claim 4, wherein: the sliding plate part (23) is provided with a round hole (26) opposite to the position above the supporting rod (12), and the round hole (26) is inserted with a limit pin (27).

6. The operating mechanism of a vacuum circuit breaker according to claim 1, wherein: the first spring seat (8) is provided with a plurality of first positioning holes (28) for inserting the energy storage springs (10), and the second spring seat (9) is provided with a plurality of second positioning holes (29) for inserting the energy storage springs (10).

7. The operating mechanism of the vacuum circuit breaker according to claim 1, wherein: the automatic spring lifting mechanism is characterized in that a lifting lever (30) is arranged on the swing arm (11), a supporting flange (31) extending towards the periphery is arranged on the side portion of the lifting lever (30), the periphery of the lifting lever (30) is sleeved with the first spring seat (8), a second limiting screw (32) used for pressing the second spring seat (9) on the supporting flange (31) is connected to the upper end of the lifting lever (30) in a threaded mode, and a third gasket (33) is clamped between the screw head of the second limiting screw (32) and the first spring seat (8).