CN107425424A - Switch cubicle and its operating mechanism, link gear - Google Patents

Abstract

The invention provides switch cubicle and its operating mechanism, link gear, link gear includes the entering spindle be arrangeding in parallel and at least one output main shaft, rotation stop is equipped with tumbler in the entering spindle, rotation stop is equipped with driven member on output main shaft, at least two cotter way fit structures are correspondingly provided with tumbler and driven member, tumbler sequentially realizes the clutch transmission with driven member by two cotter way fit structures in rotation process and drives driven member to rotate.Coordinated by two or more cotter way fit structure, increase the engagement range of tumbler and driven member, driving angle is larger.

Description

Switchgear and its operating mechanism, linkage mechanism

technical field

The invention relates to a high-voltage switchgear, in particular to a switchgear and its operating mechanism and linkage mechanism.

Background technique

The main function of the switchgear is to open and close, control and protect electrical equipment during the process of power generation, transmission, distribution and power conversion in the power system. The components in the switch cabinet are mainly composed of circuit breakers, disconnectors, grounding switches, load switches, operating mechanisms, transformers and various protection devices. We collectively refer to the isolating switch and the grounding switch as the protective switch mechanism. When the power supply line or equipment fails and during normal maintenance, the operator needs to disconnect the circuit breaker and perform corresponding operations on the protective switch mechanism (that is, disconnect the isolating switch, close After turning on the grounding switch), the door of the cable room can be opened for maintenance and other work.

The current switchgear generally includes a circuit breaker operating mechanism and a protective switch mechanism (that is, an integrated three-position isolation mechanism or a separate two-position isolation mechanism and a two-position grounding mechanism), which are used for linkage circuit breakers and protection The linkage mechanism of the switch mechanism (that is, the isolation switch and/or the grounding switch) has a complicated structure. When the switch cabinet needs to be overhauled, the operator needs to operate the protection switch mechanism four or even six times during a stop and power transmission process. , the operation process is very troublesome, the failure rate is high, and there are potential safety hazards. And this linkage mechanism is difficult to operate. Once the operator makes an operation error, such as disconnecting the isolating switch before the circuit breaker is disconnected, or opening the cable compartment door when the isolating switch is not disconnected, it may cause a safety accident.

There are also some mechanical interlocking transmission devices that can control two or more switches on the market. For example, the Chinese utility model patent with the application number 200920230446.8 and the application date of 2009.08. Chain transmission device, the rotary wheel of this transmission device is equipped with two balls eccentrically. When the rotary wheel rotates, the two balls can respectively engage with the grooves of the fork-shaped rotary plate and drive the fork-shaped rotary plate to rotate, thereby driving and The two circuit breakers connected by the fork-shaped rotary plate drive open and close. Although this kind of mechanical interlocking transmission device also realizes the purpose of driving two switches through one transmission shaft, the ball on the rotary wheel drives the fork-shaped rotary plate to have a limited rotation stroke. When the closing stroke is large, it is necessary to arrange other transmission structures that increase the rotation angle between the fork-shaped rotary plate and the switch shaft, which ultimately leads to a relatively complicated structure of the entire transmission device.

Contents of the invention

The purpose of the present invention is to provide a linkage mechanism with simple structure and large transmission angle; meanwhile, the purpose of the invention is also to provide an operating mechanism and a switchgear using this linkage mechanism.

The first technical solution of the linkage mechanism of the present invention includes an input main shaft and at least one output main shaft arranged in parallel, the input main shaft is fixed with a rotating part, the output main shaft is fixed with a driven part, and the rotating part and the driven At least two pin-groove matching structures are correspondingly provided on the part, and the rotating part realizes the clutch transmission with the driven part through the two pin-groove matching structures during the rotation process and drives the driven part to rotate. Through the cooperation of more than two pin-groove matching structures, the meshing range of the rotating part and the driven part is increased, and the transmission angle is relatively large.

Further optimization on the basis of the technical scheme 1 of the linkage mechanism can obtain the technical scheme 2, that is, there are two output spindles, which are respectively the protection switch transmission spindle and the circuit breaker transmission spindle, and the follower assembled on the circuit breaker transmission spindle is the first. The follower, the follower assembled on the transmission main shaft of the protection switch is the second follower, the rotating part is clutched and driven with the first follower through the two pin-groove matching structures, and is connected with the second follower through the two pin-groove matching structures. Follower clutch transmission.

Further optimization on the basis of technical solution 2 of the linkage mechanism can result in technical solution 3, that is, the rotating member is connected with the second driven part through two pin-slot matching structures during the two set strokes in its positive rotation stroke. The coupling part drives the second driven part to rotate, and realizes the opening action of the isolating switch and the closing action of the grounding switch in sequence within the two set strokes.

On the basis of technical solution three of the linkage mechanism, technical solution four can be obtained by further optimization, that is, the rotating member can be respectively connected with The first follower couples and drives the first follower to rotate, and realizes the opening action and closing action of the circuit breaker respectively within the two set strokes; A follower couples and drives the drive shaft of the circuit breaker to rotate. When the circuit breaker completes the opening action and separates from the first follower, it couples with the second follower and drives the isolation-grounding switch to rotate the drive shaft to complete the isolation switch in turn. The opening action and the closing action of the grounding switch, after that, the rotating part is separated from the second driven part and coupled with the first driven part again, driving the first driven part to rotate to complete the closing action of the circuit breaker.

On the basis of the above four technical solutions of the linkage mechanism, the fifth technical solution can be further obtained, that is, the rotating member, the first follower and the second follower are all disc-shaped structures, and the dial of the pin-groove matching structure The pins are arranged on the same side of the disc-shaped rotating member, and the locking grooves of the pin-groove matching structure are respectively arranged on the first disc-shaped follower and the second follower.

The first technical solution of the operating mechanism of the present invention includes a driving device and a linkage mechanism. The linkage mechanism includes an input spindle and at least one output spindle arranged in parallel. There is a follower, the rotating part and the driven part are provided with at least two pin-groove matching structures, and the rotating part realizes the clutch transmission with the driven part and drives the driven part through the two pin-groove matching structures during the rotation process. The component rotates, and the output end of the driving device is connected with the input spindle. Through the cooperation of more than two pin-groove matching structures, the meshing range of the rotating part and the driven part is increased, and the transmission angle is relatively large.

Further optimization on the basis of technical scheme 1 of the operating mechanism can result in technical scheme 2, that is, there are two output spindles, which are respectively the protection switch transmission spindle and the circuit breaker transmission spindle, and the follower assembled on the circuit breaker transmission spindle is the first The follower, the follower assembled on the transmission main shaft of the protection switch is the second follower, the rotating part is clutched and driven with the first follower through the two pin-groove matching structures, and is connected with the second follower through the two pin-groove matching structures. Follower clutch transmission.

Further optimization on the basis of technical solution 2 of the operating mechanism can result in technical solution 3, that is, the rotating member is connected to the second driven part through two pin-groove matching structures during the two set strokes in its positive rotation stroke. The coupling part drives the second driven part to rotate, and realizes the opening action of the isolating switch and the closing action of the grounding switch in sequence within the two set strokes.

On the basis of the third technical solution of the operating mechanism, the fourth technical solution can be obtained through further optimization, that is, the rotating member can be respectively connected with The first follower couples and drives the first follower to rotate, and realizes the opening action and closing action of the circuit breaker respectively within the two set strokes; A follower couples and drives the drive shaft of the circuit breaker to rotate. When the circuit breaker completes the opening action and separates from the first follower, it couples with the second follower and drives the isolation-grounding switch to rotate the drive shaft to complete the isolation switch in turn. The opening action and the closing action of the grounding switch, after that, the rotating part is separated from the second driven part and coupled with the first driven part again, driving the first driven part to rotate to complete the closing action of the circuit breaker.

On the basis of the four technical solutions of the above-mentioned operating mechanism, the fifth technical solution can be further obtained, that is, the rotating member, the first follower and the second follower are all disc-shaped structures, and the dial of the pin-slot matching structure The pins are arranged on the same side of the disc-shaped rotating member, and the locking grooves of the pin-groove matching structure are respectively arranged on the first disc-shaped follower and the second follower.

Technical solution one of the switchgear of the present invention includes an operating mechanism, the operating mechanism includes a drive device and a linkage mechanism, the linkage mechanism includes an input spindle and at least one output spindle arranged in parallel, and a rotating member is mounted on the input spindle to prevent rotation. A follower is installed on the output spindle to prevent rotation, and at least two pin-groove matching structures are correspondingly provided on the rotating piece and the driven piece. The clutch drives and drives the driven part to rotate, and the output end of the driving device is connected with the input main shaft. Through the cooperation of more than two pin-groove matching structures, the meshing range of the rotating part and the driven part is increased, and the transmission angle is relatively large.

On the basis of the technical scheme 1 of the switchgear above, the technical scheme 2 is further optimized, that is, there are two switch transmission spindles, which are respectively the protection switch transmission spindle and the circuit breaker transmission spindle, and the follower assembled on the circuit breaker transmission spindle is the first A follower, the follower assembled on the transmission main shaft of the protection switch is the second follower, the rotating part is clutched and driven with the first follower through the two pin-groove matching structures, and is connected with the second follower through the two pin-groove matching structures Two follower clutch transmission.

On the basis of the technical solution 2 of the above-mentioned switchgear, the technical solution 3 is further optimized, that is, in the two sections of the set stroke in the forward rotation stroke of the rotating member, the two pin-groove matching structures are respectively connected with the second driven The coupling part drives the second driven part to rotate, and realizes the opening action of the isolating switch and the closing action of the grounding switch in sequence within the two set strokes.

On the basis of the above-mentioned technical solution three of the switchgear, the technical solution four is further optimized, that is, the rotating member can be respectively connected with The first follower couples and drives the first follower to rotate, and realizes the opening action and closing action of the circuit breaker respectively within the two set strokes; A follower couples and drives the drive shaft of the circuit breaker to rotate. When the circuit breaker completes the opening action and separates from the first follower, it couples with the second follower and drives the isolation-grounding switch to rotate the drive shaft to complete the isolation switch in turn. The opening action and the closing action of the grounding switch, after that, the rotating part is separated from the second driven part and coupled with the first driven part again, driving the first driven part to rotate to complete the closing action of the circuit breaker.

On the basis of the above four technical solutions of the switchgear, the technical solution 5 can be further optimized, that is, the rotating member, the first driven member and the second driven member are all disc-shaped structures, and the dial of the pin-slot matching structure The pins are arranged on the same side of the disc-shaped rotating member, and the locking grooves of the pin-groove matching structure are respectively arranged on the first disc-shaped follower and the second follower.

Description of drawings

Fig. 1 is the schematic diagram of the linkage mechanism of the switchgear of the present invention when the circuit breaker is closed and the isolating switch is closed;

Fig. 2 is a schematic diagram of the linkage mechanism of the switchgear of the present invention in the state of the circuit breaker opening and the isolating switch closing;

Fig. 3 is a schematic diagram of the linkage mechanism of the switchgear of the present invention in the state of the circuit breaker opening and the isolating switch opening;

Fig. 4 is the right view of Fig. 3;

Fig. 5 is a schematic diagram of the linkage mechanism of the switch cabinet of the present invention in the state of the circuit breaker opening and the grounding switch closing;

Fig. 6 is a schematic diagram of the linkage mechanism of the switchgear of the present invention when the circuit breaker is closed and the grounding switch is closed.

In the figure: 1. The rotating part; 2. The first follower; 3. The second follower; 4. The main lock plate; 5. The auxiliary lock plate; 6. The operating mechanism transmission shaft; 7. The first follower 8. The card slot of the pin-slot matching structure of the first follower; 9. The transmission main shaft of the circuit breaker; 10. The driving main shaft of the isolation-grounding switch; 11. The outer convex arc surface; 12. The inner Concave circular arc surface; 13. The dial pin of the pin-slot matching structure of the second follower; 14. The card slot of the pin-slot matching structure of the second follower.

detailed description

Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

The specific embodiment 1 of the switch cabinet of the present invention includes a cabinet body, and a circuit breaker and a protection switch mechanism linked with the circuit breaker are installed in the cabinet body. In this embodiment, the protection switch mechanism mainly refers to a disconnector switch and a grounding switch. The operating mechanism for driving the circuit breaker, the isolating switch and the grounding switch is also installed in the cabinet. The operating mechanism includes a driving device and a linkage mechanism connected with the driving device.

Specifically, the linkage mechanism, as shown in FIGS. 1-6 , includes a drive shaft 6 of an operating mechanism, a drive shaft 9 of a circuit breaker, and a drive shaft 10 of an isolation-earth switch arranged in parallel. The drive shaft 6 of the operating mechanism is equipped with a disc-shaped rotating member 1 for rotation, the drive shaft 9 of the circuit breaker is equipped with a first follower 2 with a disc structure, and the drive shaft 10 of the isolation-earth switch is equipped with a disc. The second follower 3 of the shape structure. The rotating part 1 and the first follower 2 are correspondingly provided with a first follower pin-groove matching structure, and the rotating part 1 and the second follower 3 are correspondingly provided with a second follower pin-groove matching structure. 1 When rotating in the forward direction, that is, rotating counterclockwise as shown in Figure 1, the pin-groove matching structure of the first follower and the pin-groove matching structure of the second follower can respectively realize the connection with the first follower 2 and the second follower. The clutch transmission relationship of the moving part 3 drives the first driven part 2 and the second driven part 3 to rotate, and finally realizes the transmission with the main shaft of the transmission of the circuit breaker and the main shaft of the isolating-grounding switch.

Figures 1, 2, 3, 5 and 6 sequentially show the clutching process of the rotating member 1 with the first and second driven members during the forward rotation process.

The pin-groove matching structure of the first follower includes two dial pins 7 arranged on the disk-shaped rotating member 1 and two card slots 8 arranged on the first follower 2 as shown in FIG. The pins 7 are located on the same circumference with a set central angle between them, and the two draw-in grooves 8 are also located on the same circle with a set central angle between them. The circles intersect. In this way, when the rotating member 1 rotates, the two dial pins 7 on it can be correspondingly slid in and out of the two draw-in grooves 8 successively, and when the dial pin slides into the draw-in groove, the dial pin and the draw-in groove groove wall The stop fit of the rotating part 1 and the first driven part 2 realizes the coupling transmission, and after the pin slides out of the slot, the transmission part 1 and the first driven part 2 are disengaged from the transmission relationship.

The pin-groove matching structure of the second follower includes two other dial pins 13 arranged on the disk-shaped rotating member 1 as shown in FIG. The dial pins 13 are located on the same circumference with a set central angle between them, and the two draw-in grooves 14 are also located on the same circle with a set central angle between them. The circle where 14 intersects. The same as the clutch transmission relationship between the above-mentioned rotating member 1 and the first driven member 2, the rotating member 1 can make the two pins 13 on it slide in and out of the two slots correspondingly during the forward rotation process. 14, and when the dial pin slides into the slot, the coupling transmission between the rotating member 1 and the second follower 3 is realized through the blocking cooperation between the dial pin and the wall of the slot, and after the dial pin slides out of the slot, The disengagement of the transmission relationship between the transmission member 1 and the first driven member 3 is realized.

From the above description, it can be known that the rotating member 1 drives the first follower 2 within two set strokes through the sequential clutching of the two pins and slots of the pin-slot matching structure of the first follower in its forward rotation stroke. Rotate, the rotating member 1 drives the second driven member 3 to rotate in two sections of set strokes through the sequential clutching of the two shift pins and the catch grooves of the pin-slot matching structure of the second follower in its rotating stroke. The rotating part realizes the clutch transmission with the driven part through the two pin-slot matching structures, which increases the meshing range with the driven part, and the transmission angle is large, and the two dials of the first follower pin-slot matching structure The pin and the card slot realize the opening and closing of the circuit breaker within the transmission stroke respectively; close.

Combining Figures 1, 2, 3, 5, and 6, as shown in Figure 1, the rotating member 1 first drives the first driven member 2 to rotate at a certain angle through the coupling of a dial pin 7 and a card slot 8, as shown in Figure 2 state, the pin 7 is disengaged from the slot 8, a pin 13 and a slot 14 are just coupled, the rotating part 1 continues to rotate, and the rotating part 1 drives the second follower 3 through the coupled pin 13 and the slot 14 Turn a certain angle to the state shown in Figure 3, the pin 13 and the slot 14 are disengaged, another pair of pins 13 and the slot 14 are just coupled, and the rotating member 1 rotates and passes the coupling between the pin 13 and the slot 14 Drive the second follower 3 to turn a certain angle again to the state shown in Figure 5. At this time, the dial pin 13 and the draw-in groove 14 are disengaged, and the other dial pin 7 on the rotating member 1 and the first follower 2 Coupled with the card slot 8, the rotating member 1 continues to rotate and drives the first follower 2 to rotate at a certain angle through the pin 7 and the card slot 8 to the state shown in FIG. 6 . During the whole process, the rotating part 1 drives the first driven part 2 to rotate through two set rotation strokes, and the rotating part 1 drives the second driven part 3 to rotate through two set rotation strokes, and drives the first driven part to rotate. The two set rotation strokes are separated from each other, and the two set rotation strokes driving the second follower to rotate are continuous and located between the two set turn strokes driving the first follower to rotate.

Sequentially, during the first set rotation stroke in which the rotating part 1 drives the first driven part 2 to rotate, the drive shaft 9 of the circuit breaker rotates and realizes the opening of the circuit breaker, and when the rotating part 1 drives the second driven part 2 During the first set rotation stroke of the rotating part 3, the isolating-grounding switch transmission main shaft 10 rotates and realizes the opening of the isolating switch, and the second set rotating stroke when the rotating part 1 drives the second follower 3 to rotate During the process, the transmission main shaft 10 of the isolation-grounding switch rotates and realizes the closing of the grounding switch. During the second set rotation stroke in which the rotating part 1 drives the first driven part 2 to rotate, the transmission main shaft 9 of the circuit breaker rotates and realizes the closing of the grounding switch. Closing of the circuit breaker. The rotation angle corresponding to the first set rotation stroke driven by the rotating member 1 to rotate the second follower 3 is equal to the second set rotation stroke.

The above process is the corresponding action process of the circuit breaker, isolating switch and grounding switch driven by the operating mechanism when the switchgear is being maintained, and the driving device of the operating mechanism drives the driving shaft of the operating mechanism to rotate in reverse, that is, the rotating part rotates clockwise , the action and sequence of the circuit breaker, isolating switch and grounding switch are opposite to the above process.

In order to ensure the safety and reliability during the use of the switchgear, the linkage mechanism also includes a lock that keeps the circumferential position of the isolation-earth switch drive shaft unchanged during the rotation stroke of the rotating member and the second driven member out of the transmission relationship. stop structure. Specifically, the main lock disc 4 is installed on the drive shaft 6 of the operating mechanism to prevent rotation, and the auxiliary lock disc 5 is installed on the isolation-earth switch drive shaft 10. The main lock disc 4 has an outer convex arc surface 11, and the auxiliary lock disc 5 has an inner concave arc surface 12 adapted to the outer convex arc surface 11, wherein the inner concave arc surface 12 has two sections. In the rotation stroke of the rotating part and the second driven part out of transmission, as shown in Figure 1 and Figure 6, the main lock disc 4 cooperates with the two sections of concave arc surface 12 through the convex arc surface 11 respectively. The lock disc 5 is locked to prevent the secondary lock disc 5 from rotating, which ensures that the isolation-earthing switch transmission main shaft cannot rotate, and ensures that the positions of the isolation switch and the earthing switch are maintained. Of course, the main lock disc 4 is also provided with an avoidance concave arc surface, and the avoidance concave arc surface gives way to the auxiliary lock disc 5 in the rotation stroke of the coupling transmission of the rotating part 1 and the second driven part 3, so as to avoid the rotation of the rotating part 1. In the process of driving the second follower 3 to rotate, the main lock disc 4 interferes with the auxiliary lock disc 5 .

In this embodiment, the two dial pins 7 of the pin-slot matching structure of the first follower and the two dial pins 13 of the pin-slot matching structure of the second follower are located on the same side of the disc-shaped rotating member 1, and the first driven Part 2 and the second driven part 3 are also located on the same side of the disc-shaped rotating part 1, and the main locking disc 4 and the secondary locking disc 5 are located on the side of the first driven part away from the rotating part.

The operating mechanism of the switchgear of the present invention can drive the circuit breaker, the isolating switch and the grounding switch to complete the opening or closing through the linkage mechanism, and the operation is simple and convenient, not easy to make mistakes, and has high safety.

The present invention also provides the second embodiment of the switchgear. The difference between the second embodiment and the first embodiment is that the protection switch mechanism only includes an isolating switch. The transmission connection of the isolating switch is the transmission main shaft of the isolating switch. At this time, the rotating member only needs to have a set rotation stroke to drive the second follower to rotate during the forward rotation process, and within the set rotation stroke, use It is enough for the isolating switch to switch from the closing state to the opening state. Correspondingly, the rotating member only needs to have a set rotating stroke to drive the first driven member to rotate during the forward rotating stroke. As for the grounding switch, the action can be controlled by other operating mechanisms.

The present invention also provides a third embodiment of the switchgear. The difference between the third embodiment and the first embodiment is that the protection switch mechanism only includes the grounding switch, that is to say, the transmission spindle of the isolation-grounding switch in the first embodiment is only connected to the grounding switch. The grounding switch transmission connection is the transmission main shaft of the grounding switch. At this time, the rotating member only needs to have a set rotation stroke to drive the second follower to rotate during the forward rotation process, and within the set rotation stroke, use It is enough for the grounding switch to switch from the open state to the closed state. Correspondingly, the rotating member only needs to have a set rotating stroke to drive the first driven member to rotate during the forward rotating stroke. As for the isolating switch, the action can be controlled by other operating mechanisms.

The present invention also provides a fourth embodiment of the switchgear. The difference between the fourth embodiment and the first embodiment is that the rotating member has a set rotation stroke to drive the first driven member to rotate during the forward rotation process, that is, in After the operating mechanism drives the circuit breaker to open, the isolating switch to open and the grounding switch to close, the closing action is no longer performed.

The present invention also provides a fifth embodiment of the switchgear. The difference between the fifth embodiment and the first embodiment is that the rotating member has an "X" structure with four toggle contacts. Correspondingly, the first and second The follower is respectively provided with two shift forks that can cooperate with the corresponding toggle fingers to realize the clutch transmission relationship with the rotating member during the forward and reverse rotation of the rotating member.

In the above-mentioned various embodiments, the driving shaft of the operating mechanism is used as the input shaft, and the driving shaft of the circuit breaker and the isolating grounding switch are used as the two output shafts. When the linkage mechanism is applied to other equipment, the output shaft may not be the switching shaft. Of course, the number of output spindles can also be one, three or four, etc.

In Embodiment 1 of the switchgear of the present invention, the driving spindles of the operating mechanism, the circuit breaker and the isolating-grounding switch are arranged in parallel at intervals and pass through the same straight line. In other embodiments, the three driving spindles can be arranged in parallel and at intervals. It is arranged in a triangle. At this time, it is necessary to adjust the position of the pin and the slot of the pin-slot matching structure of the first and second follower.

The specific structure of the embodiment of the operating mechanism of the present invention is the same as that of the operating mechanism in the above switch cabinet embodiment, and will not be repeated here.

The specific structure of the embodiment of the linkage mechanism of the present invention is the same as the structure of the linkage mechanism in the above-mentioned embodiment of the switchgear, and will not be repeated here.

Claims (10)

1. A linkage mechanism, which is characterized in that it includes an input spindle arranged in parallel and at least one output spindle, a rotating member is installed on the input spindle, a driven member is installed on the output spindle, and a rotating member and a driven member are installed on the output spindle. At least two pin-groove matching structures are correspondingly provided on the moving part, and the rotating part sequentially realizes clutch transmission with the driven part through the pin-groove matching structures during the rotation process and drives the driven part to rotate. 2. The linkage mechanism according to claim 1, characterized in that there are two output spindles, which are respectively the protection switch transmission spindle and the circuit breaker transmission spindle, and the follower assembled on the circuit breaker transmission spindle is the first follower , the follower assembled on the transmission main shaft of the protection switch is the second follower, the rotating member is clutched and driven with the first follower through two pin-slot matching structures, and is connected with the second follower through the two pin-slot matching structures Clutch transmission. 3. The linkage mechanism according to claim 2, characterized in that, the rotating member is coupled with the second follower through two pin-slot matching structures during the two set strokes in its forward rotation stroke and Drive the second follower to rotate, and realize the opening action of the isolating switch and the closing action of the grounding switch in sequence within the two set strokes. 4. The linkage mechanism according to claim 3, characterized in that, in the two set strokes of the forward rotation stroke of the rotating member, the first follower pin-groove matching structure can be respectively connected with the first follower. The moving part couples and drives the first driven part to rotate, and realizes the opening action and closing action of the circuit breaker respectively within the two set strokes; When the circuit breaker completes the opening action of the circuit breaker and is separated from the first follower, it couples with the second follower and drives the isolation-grounding switch to rotate the main shaft to complete the opening action of the isolation switch. and the grounding switch to close, and then the rotating part is separated from the second driven part and coupled with the first driven part again, driving the first driven part to rotate to complete the closing action of the circuit breaker. 5. The linkage mechanism according to any one of claims 1-4, characterized in that, the rotating member, the first follower and the second follower are all disc-shaped structures, and the pins of the pin-groove matching structure Located on the same side of the disc-shaped rotating member, the locking grooves of the pin-groove matching structure are respectively arranged on the disc-shaped first follower and the second follower. 6. An operating mechanism, comprising a driving device and a linkage mechanism, the linkage mechanism including an input spindle arranged in parallel and at least one output spindle, the output end of the drive device is connected to the input spindle of the linkage mechanism, and the input spindle is fixedly mounted There is a rotating part, and a follower is installed on the output main shaft to prevent rotation. The rotating part and the driven part are correspondingly provided with at least two pin-groove matching structures. The clutch transmission of the driven part drives the driven part to rotate. 7. The operating mechanism according to claim 6, wherein there are two output spindles, which are the protection switch transmission spindle and the circuit breaker transmission spindle respectively, and the follower assembled on the circuit breaker transmission spindle is the first follower , the follower assembled on the transmission main shaft of the protection switch is the second follower, the rotating member is clutched and driven with the first follower through two pin-slot matching structures, and is connected with the second follower through the two pin-slot matching structures Clutch transmission. 8. A switchgear, comprising an operating mechanism, the operating mechanism includes a drive device and a linkage mechanism, the linkage mechanism includes an input spindle arranged in parallel and at least one output spindle connected to the switch contact transmission, the output end of the drive device and the input The main shaft is connected by transmission. The input main shaft is fixed with a rotating part, and the output main shaft is fixed with a follower. The rotating part and the driven part are provided with at least two pin-slot matching structures. Through the pin-groove matching structure, the clutch transmission with the follower is sequentially realized and the follower is driven to rotate. 9. The switchgear according to claim 8, wherein there are two output spindles, which are the protection switch transmission spindle and the circuit breaker transmission spindle respectively, and the follower assembled on the circuit breaker transmission spindle is the first follower , the follower assembled on the transmission main shaft of the protection switch is the second follower, the rotating member is clutched and driven with the first follower through two pin-slot matching structures, and is connected with the second follower through the two pin-slot matching structures Clutch transmission. 10. The switchgear according to claim 9, characterized in that, the rotating member is coupled with the second follower through two pin-slot matching structures during the two set strokes in its positive rotation stroke and Drive the second follower to rotate, and realize the opening action of the isolating switch and the closing action of the grounding switch in sequence within the two set strokes.