Electric operating mechanism of reclosing circuit breaker

Abstract

The invention discloses an electric operating mechanism for a reclosing circuit breaker, comprising a slider and a guide mechanism for limiting the slider, wherein one end of the slider is provided with a handle groove which is sleeved on a control handle, and the other end of the slider is provided with a slide groove which is sleeved on a crank mechanism, and the slider is limited by the guide mechanism to move linearly in a direction parallel to the moving direction of the control handle, and the crank mechanism can push the groove wall of the slide groove when rotating in the slide groove, so that the slider drives the control handle to move along the direction of the guide mechanism, and does not require a connecting rod or a gear to drive the control handle to open and close the switch, which can not only avoid the problem of jamming caused by dead points, but also has the characteristics of few parts, simple structure, small size and low cost.

Description

Technical Field

[0001] The invention relates to the field of low-voltage electrical appliances, and in particular to an electric operating mechanism for a reclosing circuit breaker. Background Art

[0002] Reclosing circuit breakers are widely used in power transmission and distribution circuits to control and protect circuits. Reclosing circuit breakers have two modes: electric operation and manual operation. Electric operation can replace manual operation without the need for operators to arrive at the site, enabling the reclosing circuit breaker to be opened and closed under remote signal control.

[0003] Although the existing reclosing circuit breaker can drive the control handle to open and close the circuit breaker through multiple connecting rods or gears and racks in the electric operation mode, it still has the following disadvantages:

[0004] 1. When the motor drives the control handle to open and close through multiple connecting rods, the size and direction of the force are constantly changing when the multiple connecting rods rotate, and a "dead point" position is prone to occur. In order to avoid jamming at the "dead point", a larger power motor must be selected, which not only leads to higher costs, but also has the problem of large size.

[0005] 2. When the motor drives the control handle to open and close the switch through gears and racks, it not only takes up a large space, but also has a complex structure, many parts, complex processes, and relatively high costs. Summary of the invention

[0006] The purpose of the invention is to overcome the defects of the prior art and provide an electric operating mechanism for a reclosing circuit breaker with a simple structure and high reliability.

[0007] To achieve the above purpose, the present invention adopts the following technical solutions:

[0008] An electric operating mechanism for a reclosing circuit breaker comprises a slider and a guide mechanism for limiting the slider, one end of the slider is provided with a handle slot sleeved on a control handle, the other end of the slider is provided with a slide slot sleeved on a crank mechanism, the slider is limited by the guide mechanism to move linearly in a direction parallel to the moving direction of the control handle, and the crank mechanism can push the slot wall of the slide slot when rotating in the slide slot, so that the slider drives the control handle to move along the direction of the guide mechanism.

[0009] Preferably, the crank mechanism includes a turntable and an eccentric shaft arranged at an eccentric position on the turntable. The turntable is connected to the motor and the hand lever respectively through two clutch mechanisms. The motor can drive the turntable to rotate through the clutch mechanism, and the hand lever is separated from the clutch mechanism when driving the turntable to rotate.

[0010] Preferably, the slide slot includes a closing slot frame and an opening slot frame, and the closing slot frame and the opening slot frame are connected at the corresponding rotation center position of the turntable, so that the slide slot forms a ""-shaped structure inclined to the moving direction of the slider, and the crank mechanism includes a turntable and an eccentric shaft arranged at an eccentric position on the turntable, and when the eccentric shaft pushes the closing slot frame, it drives the slider to move and drives the control handle to close the switch, and when the eccentric shaft pushes the opening slot frame, it drives the slider to move and drives the control handle to open the switch.

[0011] Preferably, the closing slot frame includes a closing push wall and a closing yield wall, and a closing connecting wall connected between one end of the closing push wall and the closing yield wall, and the opening slot frame includes an opening push wall and a opening yield wall, and a opening connecting wall connected between one end of the opening push wall and the opening yield wall, the opening push wall and the opening yield wall are spaced apart from each other at the other end connected to the opening connecting wall, and are respectively connected to the closing yield wall and the closing push wall for connecting to the other end of the closing connecting wall; when the eccentric shaft pushes the closing push wall, it drives the control handle to close the switch, and when the eccentric shaft pushes the opening push wall, it drives the control handle to open the switch.

[0012] Preferably, the closing push wall, closing yield wall, opening push wall and opening yield wall are respectively planar structures, and the closing push wall and the opening push wall are arranged perpendicular to the moving direction of the slider, the closing yield wall and the opening yield wall are arranged parallel to the moving direction of the slider, and the closing connecting wall and the opening connecting wall are respectively arc surface structures; the connection between the closing push wall and the opening yield wall, and the connection between the closing yield wall and the opening push wall are respectively provided with rounded corner structures, after the control handle is closed, the eccentric shaft leaves the closing push wall and slides to the side of the opening yield wall along the corresponding rounded corner structure, and after the control handle is opened, the eccentric shaft leaves the opening push wall and slides to the side of the closing yield wall along the corresponding rounded corner structure.

[0013] Preferably, the closing slot frame includes a closing push wall and a closing transition wall connected at one end, and the opening slot frame includes an opening push wall and an opening transition wall connected at one end, and the other ends of the closing push wall and the closing transition wall are spaced apart and respectively connected to the other ends of the opening transition wall and the opening push wall which are interconnected; when the eccentric shaft pushes the closing push wall, it drives the control handle to close the switch, and when the eccentric shaft pushes the opening push wall, it drives the control handle to open the switch, one end of the closing transition wall connected to the opening push wall, and one end of the opening transition wall connected to the closing push wall, respectively protrude outward to form an arc surface structure for avoiding the eccentric shaft, and a slider protrusion with a triangular structure is formed between the closing transition wall and the opening push wall, and between the opening transition wall and the closing push wall.

[0014] Preferably, the guide mechanism includes a guide bracket with a U-shaped structure, and two guide columns respectively connected between the opposite side walls of the guide bracket. The guide columns are arranged parallel to the moving direction of the control handle. A guide plate arranged perpendicular to the guide columns is provided on the side of the slider, and a guide hole is provided on the guide plate and slides on the guide column.

[0015] Preferably, it also includes a limit cover plate with a U-shaped structure, which is inverted on the top side of the crank mechanism, and the opposite side walls of the limit cover plate are respectively connected to the guide bracket, a hand lever is provided on the top side of the crank mechanism, and a limit hole cooperating with the hand lever is provided in the middle of the limit cover plate.

[0016] Preferably, the two side edges of the slider and the side wall of the limiting cover plate are respectively raised along the moving direction to form limiting bosses with an arc surface structure, and the two limiting bosses are respectively matched with the inner side limiting sides of the side walls of the limiting cover plate.

[0017] Preferably, the handle groove is clearance-matched with the control handle, and the side walls of the handle groove opposite to each other in the moving direction of the control handle extend laterally to form contact plates with an arc surface structure.

[0018] Preferably, one end of the eccentric shaft is connected to the turntable, and a rotatable sleeve is provided at the other end of the eccentric shaft, and the outer circumference of the sleeve is in rolling fit with the groove wall of the sliding groove.

[0019] Preferably, the two clutch mechanisms respectively include an active part and a driven part, the active parts of the two clutch mechanisms are respectively connected to the motor and the hand lever, and the driven parts of the two clutch mechanisms are respectively connected to the crank mechanism; when the motor and the hand lever rotate to one side, they can drive the connected active part to push the corresponding driven part to rotate horizontally, so that the driven part drives the crank mechanism to open and close the control handle, and at the same time the crank mechanism drives the other corresponding driven part and the active part to separate.

[0020] Preferably, it includes a shell and a plurality of main circuit units arranged side by side in the shell, the shell is provided with a plurality of cavities corresponding one to one with the main circuit units, the motor is arranged in the cavity of the main circuit unit connected to the neutral wire, and one end of the control handle is arranged in the cavity of the main circuit unit connected to the live wire.

[0021] The reclosing circuit breaker created by the present invention has a slide groove of a slider sleeved on a crank mechanism, so that the crank mechanism pushes the groove wall of the slide groove to drive the slider to move, and no connecting rod or gear is required to drive the control handle to open and close the switch. Not only can the problem of jamming caused by dead points be avoided, but also the characteristics of fewer parts, simple structure, small size and low cost are provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of an electric operating mechanism of a reclosing circuit breaker according to an embodiment of the present invention;

[0023] Figure 2 It is a side view of the electric operating mechanism of the reclosing circuit breaker according to the embodiment of the present invention;

[0024] Figure 3 This is the first implementation of the slider of the present invention;

[0025] Figure 4 This is the second implementation of the slider of the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of an eccentric shaft according to an embodiment of the present invention;

[0027] Figure 6 It is a schematic diagram of the coordination between the crank mechanism and the slider in the embodiment of the invention;

[0028] Figure 7 It is a schematic structural diagram of a clutch mechanism according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] like Figure 1-3 As shown, the electric operating mechanism of the reclosing circuit breaker created by the present invention includes a slider 400 and a guide mechanism for limiting the slider 400. One end of the slider 400 is provided with a handle groove 410 that is sleeved on the control handle 200, and the other end of the slider 400 is provided with a slide groove 420 that is sleeved on the crank mechanism 300. The slider 400 is limited by the guide mechanism to move in a direction parallel to the moving direction of the control handle 200. When the crank mechanism 300 rotates in the slide groove 420, it can push the groove wall of the slide groove 420, so that the slider 400 moves linearly along the direction of the guide mechanism, and the control handle 200 is driven to move through the handle groove 410 on the slider 400. When the control handle 200 moves, closing, opening and re-locking operations can be performed.

[0030] The reclosing circuit breaker created by the present invention has a slide groove 420 of a slider 400 mounted on a crank mechanism 300, so that the crank mechanism 300 pushes the groove wall of the slide groove 420 to drive the slider 400 to move, and no connecting rod or gear is required to drive the control handle 200 to open and close the circuit breaker. This not only avoids the problem of jamming caused by dead points, but also has the characteristics of fewer parts, simple structure, small size and low cost.

[0031] The following is combined with Figures 1 to 7 The given embodiments further illustrate the specific implementation of the electric operating mechanism of the reclosing circuit breaker created by the present invention. The electric operating mechanism of the reclosing circuit breaker created by the present invention is not limited to the description of the following embodiments.

[0032] like Figure 1-2As shown, the reclosing circuit breaker created by the present invention includes a housing and a plurality of main circuit units arranged side by side in the housing. The housing is provided with a plurality of cavities corresponding to the main circuit units one by one. The four main circuit units are an A-phase main circuit unit, a B-phase main circuit unit, a C-phase main circuit unit and an N-phase main circuit unit arranged in sequence. The A-phase main circuit unit, the B-phase main circuit unit and the C-phase main circuit unit are connected to the live wire respectively, and the N-phase main circuit unit is connected to the neutral wire. The motor 140 is arranged in the cavity corresponding to the N-phase main circuit unit. By arranging the motor 140 in the cavity corresponding to the N-phase main circuit unit, not only can the space in the housing of the reclosing circuit breaker be effectively utilized to reduce the overall volume, but also the motor 140 can be avoided from being arranged above the zero-sequence current transformer to reduce the overall height. Of course, the motor 140 can also be arranged in the cavity corresponding to the C-phase main circuit unit and the N-phase main circuit unit, which all belong to the protection scope of the present invention.

[0033] The length direction of the slider 400 is perpendicular to the moving direction of the control handle 200. One end of the slider 400 is provided with a handle slot 410 that is sleeved on the control handle 200 with clearance fit. The other end of the slider 400 is provided with a slide slot 420 corresponding to the motor 140. The crank mechanism 300 is arranged in the slide slot 420 and is respectively connected to the motor 140 and the hand lever 150. Preferably, the motor 140 is an AC reduction motor, which can not only effectively reduce product noise, but also has low cost.

[0034] like Figure 1-2 As shown, the guide mechanism includes a guide bracket 521 with a U-shaped structure, and two guide columns 522 respectively connected between the opposite side walls of the guide bracket 521, the guide columns 522 are arranged parallel to the moving direction of the control handle 200, and a guide plate 523 arranged perpendicular to the guide column 522 is provided on the side of the slider 400, and a guide hole 524 is provided on the guide plate 523 and is slidably fitted on the guide column 522.

[0035] Specifically, the control handle 200 and the motor 140 pass through the middle of the guide bracket 521 respectively, the crank mechanism 300 is located on the inner side of the guide bracket 521, and the two guide columns 522 are respectively arranged on the side where the control handle 200 and the motor 140 are away from each other. The side of the slider 400 is respectively provided with two opposite guide plates 523 corresponding to each guide column, and the two guide plates 523 are respectively provided with guide holes 524 that are slidably fitted on the same guide column 522.

[0036] Furthermore, it also includes a U-shaped limit cover plate 525, which is inverted on the top side of the crank mechanism 300, and the opposite side walls of the limit cover plate 525 are respectively connected to the guide bracket 521, and a hand lever 150 is provided on the top side of the crank mechanism 300. A limit hole cooperating with the hand lever 150 is provided in the middle of the limit cover plate 525, and the hand lever 150 passes through the limit hole and extends to the top side of the limit cover plate 525.

[0037] After the guide hole 524 on the slider 400 is sleeved on the guide column 522, the slider 400 can be limited on the inner side of the guide bracket 521, so that the slider 400 and the guide mechanism can be assembled as one and then installed together on the housing of the reclosing circuit breaker, and then the limit cover 525 is covered to complete the assembly of the reclosing mechanism, which can effectively improve the assembly efficiency and reduce labor costs.

[0038] Furthermore, the two side edges of the slider 400 opposite to the side walls of the limiting cover plate 525 are respectively raised along the moving direction to form limiting bosses 526 with an arc surface structure. The two limiting bosses 526 are respectively matched with the inner side limiting bosses of the two side walls opposite to the limiting cover plate 525 to limit the extreme position of the movement of the slider 400.

[0039] Furthermore, the side walls of the handle groove 410 opposite to each other in the moving direction of the control handle 200 extend laterally to form a contact plate 411 with an arc surface structure. The contact plate 411 with an arc surface structure can reduce the friction between the control handle 200 and the control handle 200 .

[0040] See also Figure 3-4 As shown, the crank mechanism 300 includes a turntable 310 and an eccentric shaft 320 disposed at an eccentric position on the turntable 310. The turntable 310 is connected to the motor 140 and the hand lever 150 respectively through two clutch mechanisms. The motor 140 can drive the turntable 310 to rotate through the clutch mechanism. When the hand lever 150 drives the turntable 310 to rotate, it is separated from the clutch mechanism. The clutch mechanism enables the motor 140 and the hand lever 150 to only drive the turntable 310 to rotate in a clockwise direction. When the motor 140 and the hand lever 150 rotate counterclockwise to the other side, the corresponding clutch mechanism idles and the turntable 310 does not rotate. The turntable 310 and the eccentric shaft 320 are riveted together, or fixed by screws, welded, etc.

[0041] The slide slot 420 includes two connected slot frames, and the rotary disc 310 can drive the eccentric shaft 320 to move between the two slot frames, and the eccentric shaft 320 pushes the side walls of the two slot frames respectively, so that the slider 400 drives the control handle 200 to open and close the switch. In other words, driving protrusions are formed on both sides of the connecting position of the two slot frames, and the eccentric shaft 320 pushes the two driving protrusions respectively, so that the slider 400 drives the control handle 200 to open and close the switch.

[0042] Specifically, the two slot frames are respectively a closing slot frame 421 and an opening slot frame 422. The closing slot frame 421 and the opening slot frame 422 are connected at the rotation center position of the turntable 310 so that the slide slot 420 forms an "8"-shaped structure inclined to the moving direction of the slider 400. The eccentric shaft 320 and the closing slot frame 421 cooperate to drive the slider 400 to move and drive the control handle 200 to close the switch. The eccentric shaft 320 and the opening slot frame 422 cooperate to drive the slider 400 to move and drive the control handle 200 to open the switch.

[0043] The projection of the rotation center of the turntable 310 along the moving direction of the slider 400 is located in the overlapping area of ​​the projections of the closing slot frame 421 and the opening slot frame 422 along the moving direction of the slider 400. In the process of the turntable 310 pushing the slider 400 to move through the eccentric shaft 320, the hand lever 150 installed on the rotation center of the turntable 310 can enter the closing slot frame 421 and the opening slot frame 422, that is, the hand lever 150 on the rotation center of the turntable 310 is avoided by the closing slot frame 421 and the opening slot frame 422.

[0044] Figure 3 , 4 Two embodiments of the slider 400 are shown. The two embodiments have the same working principle and only differ in the shape of the slide groove 420 .

[0045] See also Figure 3 The first embodiment of the slide slot 420 is shown, wherein the closing slot frame 421 comprises a closing push wall 4211 and a closing yield wall 4212, and a closing connection wall 4213 connected between one end of the closing push wall 4211 and the closing yield wall 4212, and the other end of the closing push wall 4211 and the closing yield wall 4212 connected to the closing connection wall 4213 is spaced apart;

[0046] The gate-opening slot frame 422 includes a gate-opening push wall 4221 and a gate-opening yield wall 4222, and a gate-opening connecting wall 4223 connected between one end of the gate-opening push wall 4221 and the gate-opening yield wall 4222. The gate-opening push wall 4221 and the gate-opening yield wall 4222 are spaced apart from each other at the other end connected to the gate-opening connecting wall 4223, and are respectively connected to the gate-closing yield wall 4212 and the gate-closing push wall 4211 for connecting to the other end of the gate-closing connecting wall 4213.

[0047] Preferably, the closing push wall 4211, the closing yielding wall 4212, the opening push wall 4221 and the opening yielding wall 4222 are respectively planar structures, and the closing push wall 4211 and the opening push wall 4221 are arranged perpendicular to the moving direction of the slider 400, the closing yielding wall 4212 and the opening yielding wall 4222 are arranged parallel to the moving direction of the slider 400, and the closing connecting wall 4213 and the opening connecting wall 4223 are respectively arc surface structures.

[0048] Preferably, the connection between the closing push wall 4211 and the opening gate yielding wall 4222, and the connection between the closing yielding wall 4212 and the opening gate push wall 4221 are respectively provided with rounded corner structures 431. After the control handle 200 is closed, the eccentric shaft 320 leaves the closing push wall 4211 and slides along the corresponding rounded corner structure 431 to the side of the opening gate yielding wall 4222. After the control handle 200 is opened, the eccentric shaft 320 leaves the opening gate push wall 4221 and slides along the corresponding rounded corner structure 431 to the side of the closing yielding wall 4212.

[0049] See also Figure 4 A second embodiment of the slide slot 420 is shown. In this embodiment, a closing transition wall 4214 is formed by the closing clearance wall 4212 and the closing connecting wall 4213 of the first embodiment, and an opening transition wall 4224 is formed by the opening clearance wall 4222 and the opening connecting wall 4223.

[0050] Specifically, the closing slot frame 421 includes a closing push wall 4211 and a closing transition wall 4214 connected at one end, and the opening slot frame 422 includes an opening push wall 4221 and an opening transition wall 4224 connected at one end, and the closing push wall 4211 and the closing transition wall 4214 are spaced apart from each other at the other end and are respectively connected to the opening transition wall 4224 and the opening push wall 4221.

[0051] When the eccentric shaft 320 pushes the closing push wall 4211, it drives the control handle 200 to close the switch; when the eccentric shaft 320 pushes the opening push wall 4221, it drives the control handle 200 to open the switch; one end of the closing transition wall 4214 connected to the opening push wall 4221, and one end of the opening transition wall 4224 connected to the closing push wall 4211, respectively protrude outward to form an arc surface structure 432 for avoiding the eccentric shaft 320, and a slider protrusion 433 with a triangular structure is formed between the closing transition wall 4214 and the opening push wall 4221, and between the opening transition wall 4224 and the closing push wall 4211.

[0052] See also Figure 6 Taking the first embodiment of the above-mentioned slide groove 420 as an example, the specific action process of the slider 400 is as follows:

[0053] In the electric operation mode, the motor 140 drives the turntable 310 to rotate clockwise. In the manual operation mode, the hand lever 150 drives the turntable 310 to rotate clockwise. Each time the turntable 310 rotates half a circle, the eccentric shaft 320 rotates toward the groove frame on the other side and pushes the groove wall of the groove frame during the rotation.

[0054] The opening process, i.e., the process of the closing position rotating toward the opening position, refers to the closing position, opening process 1-3, and opening position in the figure. In this process, the rotating disk 310 drives the eccentric shaft 320 to rotate clockwise:

[0055] In the closing position, the eccentric shaft 320 is close to the opening position wall 4222, and the eccentric shaft 320 does not generate driving force.

[0056] During the gate opening process 1, the eccentric shaft 320 idles in the gate opening slot frame 422 toward the gate opening push wall 4221 without generating any driving force;

[0057] In the opening process 2, the eccentric shaft 320 contacts the opening push wall 4221, and the eccentric shaft 320 pushes the opening push wall 4221 downward to push the slider 400 to move, and the slider 400 starts to drive the control handle 200 to move in the opening direction;

[0058] Opening process 3, before the eccentric shaft 320 is separated from the opening pushing wall 4221, the control handle 200 is driven by the slider 400 to open the gate in place;

[0059] In the off position, the shaft continues to rotate, driving the eccentric shaft 320 to separate from the off push wall 4221, and slide into the closing slot frame 421, so that the eccentric shaft 320 is close to the closing clearance wall 4212. It can be understood that the eccentric shaft 320 may not be close to the closing clearance wall 4212 at this time, as in the second embodiment of the sliding slot 420 described above, and may also be arranged at intervals.

[0060] The closing process, i.e., the process of rotating from the opening position to the closing position, has the same principle as the above-mentioned opening process. Refer to the diagram of the opening position, closing process 1-3, and closing position. In this process, the turntable 310 drives the eccentric shaft 320 to rotate clockwise, and the eccentric shaft 320 first idles in the closing slot frame 421 (closing process 1) until it contacts the closing push wall 4211 (closing process 2), and then pushes the closing push wall 4211 to push the slider 400 upward to move, and drives the control handle 200 to move in the closing direction through the slider 400. Before the eccentric shaft 320 separates from the closing push wall 4211 (closing process 3), the control handle 200 is driven by the slider 400 to close in place, and finally the shaft continues to rotate, driving the eccentric shaft 320 to separate from the closing push wall 4211, and slide into the opening slot frame 422, so that the eccentric shaft 320 is close to the opening clearance wall 4222 (closing position).

[0061] Referring to the closing position and the opening position shown in the figure, the eccentric shaft 320 is located at the connecting point of the closing slot frame 421 and the opening slot frame 422. If the reclosing circuit breaker is tripped at this time, the control handle 200 moves to the tripping position between the closing position and the opening position. At the same time, the control handle 200 drives the slider 400 to move, and the slider 400 passes through the closing slot frame 421 and the opening slot frame 422 to avoid the eccentric shaft 320 and the hand lever 150 installed on the turntable 310.

[0062] like Figure 5 As shown, one end of the eccentric shaft 320 is connected to the turntable 310, and a rotatable sleeve 323 is provided at the other end of the eccentric shaft 320. The outer circumference of the sleeve 323 is rollingly matched with the groove wall of the sliding groove 420, and the rolling match can effectively reduce friction.

[0063] like Figure 7 As shown, the crank mechanism 300 is connected to the motor 140 and the hand lever 150 respectively through two clutch mechanisms. The clutch mechanisms enable the motor 140 and the hand lever 150 to only drive the turntable 310 to rotate in a clockwise direction.

[0064] Specifically, the two clutch mechanisms include a driving member 1 and a driven member 2, respectively. The driving members 1 of the two clutch mechanisms are respectively connected to the output shaft 141 of the motor 140 and the hand lever 150, and the driven members 2 of the two clutch mechanisms are respectively connected to the crank mechanism 300. When the motor 140 or the hand lever 150 rotates to one side, it can drive the connected driving member 1 to push the corresponding driven member 2 to rotate horizontally, so that the driven member 2 drives the crank mechanism 300 to open and close the control handle 200, and at the same time, the crank mechanism 300 drives the driven member 2 and the driving member 1 corresponding to the other one of the motor 140 and the hand lever 150 to separate and idle in the horizontal direction;

[0065] When the motor 140 and the hand lever 150 rotate to the other side, the connected active member 1 and the corresponding driven member 2 are driven to rotate idly separately.

[0066] Furthermore, the structures of the two clutch mechanisms of the present embodiment are basically the same, both of which are ratchet clutch methods with external meshing. The active member 1 is a ratchet, and the driven member 2 is a pawl. The pawl is limited by a spring 3 on multiple inclined ratchet teeth around the ratchet. One side of the ratchet tooth can be limited by the pawl so that the pawl can be driven to rotate when the ratchet wheel rotates to that side, and the other side of the ratchet tooth can push the pawl away from the ratchet wheel so that the pawl is pushed away when the ratchet wheel rotates to that side.

[0067] Specifically, the crank mechanism 300 includes a base plate 133 arranged opposite to the turntable 310, and two mounting plates 131 arranged between the base plate 133 and the turntable 310. The turntable 310, the base plate 133, the electric mounting plate 131 and the manual mounting plate 132 are fixedly connected by screws 135. The ratchets of the two clutch mechanisms are respectively arranged on the inner sides of the two mounting plates 131. The pawls of the two clutch mechanisms are respectively limited circumferentially by the two mounting plates 131. When the ratchet pushes the corresponding pawl to rotate, the pawl drives the corresponding mounting plate 131 and the turntable 310 to rotate, and then the eccentric shaft 320 on the turntable 310 pushes the slider 400 to drive the control handle 200 to realize opening and closing and re-locking.

[0068] Preferably, the hand lever 150 is provided with a hexagonal groove. When manual operation is required, a wrench can be inserted into the hexagonal groove, and the hand lever 150 can be driven to rotate by the wrench. Of course, the hand lever 150 can also be integrally formed with the corresponding ratchet. It is understandable that the structures of the two clutch mechanisms can also be different, and the ratchet clutch mode of the inner core can also be adopted, which all belong to the protection scope of the invention.

[0069] The above content is a further detailed description of the invention in combination with specific preferred implementation methods, and it cannot be determined that the specific implementation of the invention is limited to these descriptions. For ordinary technicians in the technical field to which the invention belongs, several simple deductions or substitutions can be made without departing from the concept of the invention, which should be regarded as falling within the scope of protection of the invention.

Claims

1. An electric operating mechanism for a reclosing circuit breaker, characterized in that: The invention comprises a slider (400) and a guide mechanism for limiting the slider (400); one end of the slider (400) is provided with a handle groove (410) sleeved on the control handle (200); the other end of the slider (400) is provided with a slide groove (420) sleeved on the crank mechanism (300); the slider (400) is limited by the guide mechanism to move linearly in a direction parallel to the moving direction of the control handle (200); when the crank mechanism (300) rotates in the slide groove (420), it can push the groove wall of the slide groove (420), so that the slider (400) drives the control handle (200) to move along the direction of the guide mechanism; the handle groove (410) and the control handle (200) are clearance-matched; the slider (400) is provided with a handle groove (410) sleeved on the control handle (200); the slider (400) is limited by the guide mechanism to move linearly in a direction parallel to the moving direction of the control handle (200); when the crank mechanism (300) rotates in the slide groove (420), the slider (400) can push the groove wall of the slide groove (420), so that the slider (400) drives the control handle (200) to move along the direction of the guide mechanism; the handle groove (410) and the control handle (200) are clearance-matched; The slot (420) comprises a closing slot frame (421) and an opening slot frame (422); the closing slot frame (421) and the opening slot frame (422) are connected to each other at the rotation center position of the turntable (310); the slide slot (420) is arranged to be inclined to the moving direction of the slider (400); the crank mechanism (300) comprises a turntable (310) and an eccentric shaft (320) arranged at an eccentric position on the turntable (310); when the eccentric shaft (320) pushes the closing slot frame (421), the slider (400) is driven to move and drive the control handle (200) to close the switch; when the eccentric shaft (320) pushes the opening slot frame (422), the slider (400) is driven to move and drive the control handle (200) to open the switch.

2. The electric operating mechanism of the reclosing circuit breaker according to claim 1, characterized in that: The rotating disk (310) is connected to the motor (140) and the hand lever (150) respectively through two clutch mechanisms; the motor (140) and the hand lever (150) can respectively drive the rotating disk (310) to rotate through their respective corresponding clutch mechanisms, while separating the clutch mechanism corresponding to the other from the rotating disk (310).

3. The electric operating mechanism of the reclosing circuit breaker according to claim 2, characterized in that: The closing slot frame (421) comprises a closing push wall (4211) and a closing yield wall (4212), and a closing connection wall (4213) connected between one end of the closing push wall (4211) and the closing yield wall (4212); the opening slot frame (422) comprises an opening push wall (4221) and a opening yield wall (4222), and an opening connection wall (4223) connected between one end of the opening push wall (4221) and the opening yield wall (4222); The other ends of the gate push wall (4221) and the gate opening position-discharging wall (4222) connected to the gate opening connection wall (4223) are arranged at intervals, and are respectively connected to the gate closing position-discharging wall (4212) and the gate closing push wall (4211) for connecting to the other ends of the gate closing connection wall (4213); when the eccentric shaft (320) pushes the gate closing push wall (4211), it drives the control handle (200) to close the gate, and when the eccentric shaft (320) pushes the gate opening push wall (4221), it drives the control handle (200) to open the gate.

4. The electric operating mechanism of the reclosing circuit breaker according to claim 3, characterized in that: The closing push wall (4211), the closing yield wall (4212), the opening push wall (4221) and the opening yield wall (4222) are respectively in planar structures, and the closing push wall (4211) and the opening push wall (4221) are arranged perpendicular to the moving direction of the slider (400), and the closing yield wall (4212) and the opening yield wall (4222) are arranged parallel to the moving direction of the slider (400), and the closing connection wall (4213) and the opening connection wall (4223) are respectively in arc surface structures; the closing push wall (4211) and the opening yield wall (4222) are respectively in planar structures; A rounded structure (431) is provided at the connection between the closing position wall (4222) and the closing position wall (4212) and the opening position push wall (4221). After the control handle (200) is closed, the eccentric shaft (320) leaves the closing position push wall (4211) and slides along the corresponding rounded structure (431) to the side of the opening position wall (4222). After the control handle (200) is opened, the eccentric shaft (320) leaves the opening position push wall (4221) and slides along the corresponding rounded structure (431) to the side of the closing position wall (4212).

5. The electric operating mechanism of the reclosing circuit breaker according to claim 1, characterized in that: The closing slot frame (421) comprises a closing push wall (4211) and a closing transition wall (4214) connected at one end, and the opening slot frame (422) comprises an opening push wall (4221) and an opening transition wall (4224) connected at one end, the closing push wall (4211) and the closing transition wall (4214) are arranged at intervals on the other end and are respectively connected to the opening transition wall (4224) and the opening push wall (4221) which are connected to each other; when the eccentric shaft (320) pushes the closing push wall (4211), the control handle (200) is driven to close the switch, and the eccentric shaft (320) ) pushes the gate-opening push wall (4221), the control handle (200) is driven to open the gate, and one end of the gate-closing transition wall (4214) connected to the gate-opening push wall (4221), and one end of the gate-opening transition wall (4224) connected to the gate-closing push wall (4211) are respectively protruded outward to form an arc surface structure (432) for avoiding the eccentric shaft (320), and a slider protrusion (433) with a triangular structure is respectively formed between the gate-closing transition wall (4214) and the gate-opening push wall (4221), and between the gate-opening transition wall (4224) and the gate-closing push wall (4211).

6. The electric operating mechanism of the reclosing circuit breaker according to claim 1, characterized in that: The guide mechanism comprises a guide bracket (521) with a U-shaped structure, and two guide posts (522) respectively connected between two opposite side walls of the guide bracket (521), the guide posts (522) being arranged parallel to the moving direction of the control handle (200), a guide plate (523) arranged perpendicular to the guide posts (522) being arranged on the side of the slider (400), and a guide hole (524) being arranged on the guide plate (523) and being slidably fitted on the guide posts (522) being arranged.

7. The electric operating mechanism of the reclosing circuit breaker according to claim 6, characterized in that: The invention also comprises a limiting cover plate (525) in a U-shaped structure, wherein the limiting cover plate (525) is buckled on the top side of the crank mechanism (300), and the side walls on both sides opposite to each other of the limiting cover plate (525) are respectively connected to the guide bracket (521), and a hand lever (150) is provided on the top side of the crank mechanism (300), and a limiting hole cooperating with the hand lever (150) is provided in the middle of the limiting cover plate (525).

8. The electric operating mechanism of the reclosing circuit breaker according to claim 7, characterized in that: The two side edges of the slider (400) and the side walls of the limiting cover plate (525) are respectively raised in the moving direction to form limiting bosses (526) with an arc surface structure, and the two limiting bosses (526) are respectively matched with the inner sides of the side walls of the limiting cover plate (525) on both sides.

9. The electric operating mechanism of the reclosing circuit breaker according to claim 1, characterized in that: The side walls of the handle groove (410) opposite to each other in the moving direction of the control handle (200) extend laterally to form contact plates (411) with an arc surface structure.

10. The electric operating mechanism of the reclosing circuit breaker according to claim 1, characterized in that: One end of the eccentric shaft (320) is connected to the rotating disk (310), and a rotatable shaft sleeve (323) is provided at the other end of the eccentric shaft (320), and the outer circumference of the shaft sleeve (323) is rollingly matched with the groove wall of the sliding groove (420).

11. The electric operating mechanism of the reclosing circuit breaker according to claim 2, characterized in that: The two clutch mechanisms respectively comprise an active member (1) and a driven member (2); the active members (1) of the two clutch mechanisms are respectively connected to the motor (140) and the hand lever (150); and the driven members (2) of the two clutch mechanisms are respectively connected to the crank mechanism (300); when the motor (140) and the hand lever (150) rotate to one side, they can drive the connected active member (1) to push the corresponding driven member (2) to rotate horizontally, so that the driven member (2) drives the crank mechanism (300) to open and close the control handle (200), and at the same time, the crank mechanism (300) drives the other corresponding driven member (2) and the active member (1) to separate.

12. The electric operating mechanism of the reclosing circuit breaker according to claim 2, characterized in that: The invention comprises a shell and a plurality of main circuit units arranged side by side in the shell, wherein the shell is provided with a plurality of cavities corresponding to the main circuit units one by one, the motor (140) is arranged in the cavity of the main circuit unit connected to the neutral line, and one end of the control handle (200) is arranged in the cavity of the main circuit unit connected to the live line.

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