Electrically-operated circuit breaker drawer

Abstract

An electrically-operated circuit breaker drawer comprises a shell, a circuit breaker, a clutch and an electric mechanism used for switching opening and closing of the circuit breaker are arranged in the shell, the electric mechanism comprises a motor, a rotating shaft and an adjusting structure, and the adjusting structure is used for adjusting the state of the motor so that the rotating shaft can be manually driven to switch the opening and closing states of the circuit breaker. The rotating shaft with the manual function on the motor is automatically adjusted through the adjusting structure, the handle on the panel is reserved, when manual operation is needed, only the handle needs to be rotated, the operation habit is not changed, the manual function and the electric function are achieved at the same time, equipment safety is guaranteed through the manual function under the emergency situation, the occupied space is small, and operation is convenient. A switching mechanism does not need to be additionally arranged, and the complexity of installing a manual function and an electric function of the breaker drawer can be reduced.

Description

Technical Field

[0001] The utility model relates to an electric operating circuit breaker drawer, belonging to the field of circuit breakers. Background Art

[0002] The universal circuit breaker, also known as the frame circuit breaker, can connect, carry and break the current under normal circuit conditions, and can also break the fault current under specified abnormal circuit conditions. In terms of the application of the universal circuit breaker, it is divided into a fixed circuit breaker and a draw-out circuit breaker. Since the draw-out circuit breaker is mounted in a drawer and can move within the drawer, it has the advantage of being convenient for detection and maintenance, so it is widely used.

[0003] The existing draw-out circuit breaker requires two components, a clutch and a manual drive motor, to work in the manual function, and a separate switching device is required to switch between the manual and electric functions. For example, the Chinese utility model with the publication number CN113964710A discloses an electric operating drawer, including a drawer, and a manual operating device and an electric operating device respectively arranged in the drawer; the manual operating device includes a molded case switch, a switch assembly connected to the molded case switch, and an operating handle connected to the switch assembly; the electric operating device includes a control board, and a control module and an electric operating assembly arranged on the control board, the electric operating assembly is connected to the switch assembly, and the control board controls the electric operating assembly to work through the control information input by the control module. This utility model controls the electric operating assembly to work through the control board, which requires additional installation and transformation, and has a relatively complex structure. It is not fully matched with the model of the motor, cannot achieve a fully controlled state, and the switching between the manual and electric functions is not convenient, occupying a large space. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the defects and deficiencies existing in the prior art, and to provide an electric operating circuit breaker drawer.

[0005] An electric operating circuit breaker drawer includes a housing, and a circuit breaker, a clutch, and an electric mechanism for switching the opening and closing of the circuit breaker are arranged in the housing. The electric mechanism includes a motor, a rotating shaft, and an adjusting structure. The adjusting structure is used to adjust the state of the motor so that the rotating shaft can manually drive to switch the opening and closing state of the circuit breaker. The rotating shaft that plays a manual function on the motor is automatically adjusted through the adjusting structure, and the handle on the panel is retained. When manual operation is required, only the handle needs to be rotated, without changing the operation habit. At the same time, the manual and electric functions are realized. The manual function is used in case of emergency to ensure the safety of the equipment, and it occupies a small space. There is no need to additionally increase a switching mechanism, which can reduce the complexity of the manual function and the electric function of installing the circuit breaker drawer.

[0006] Further, the electric mechanism further includes a housing and a drive shaft sleeved outside the rotating shaft and connected to the motor. The adjusting structure includes a drive plate fixedly connected to the outside of the housing at one end of the drive shaft, a first rotating plate fixedly sleeved on the rotating shaft, and a first rotating groove on the first rotating plate that is linked to the drive plate through a fixed shaft. The fixed shaft is clamped with the first rotating groove so that the rotating shaft is in a limited position during electric switching on and off. By providing the sliding fit between the first rotating groove and the fixed shaft fixed on the drive plate, when the drive plate rotates, it can drive the first rotating plate to rotate. At this time, the rotating shaft also rotates with the first rotating plate and enters the limited position.

[0007] Preferably, when the fixed shaft is in the first position, the drive shaft drives the drive plate and the first rotating plate to rotate clockwise to the closing position and then rotate back. The fixed shaft rotates counterclockwise from the first position in the first rotating groove to the second position, so that the rotating shaft is released from the limited position and can be manually switched off. After electric closing, the drive plate rotates back to drive the fixed shaft to rotate in the first rotating groove at the same time, releasing the limited position of the rotating shaft, and the operator can manually operate the rotating shaft to switch off.

[0008] Further, when the fixed shaft is in the second position, the drive shaft drives the drive plate and the second rotating plate to rotate counterclockwise to the opening position and then rotate back. The fixed shaft rotates clockwise from the second position in the first rotating groove to the first position, so that the rotating shaft is released from the limited position and can be manually switched on. After electric opening, the drive shaft drives the drive plate to rotate back, and the drive plate drives the fixed shaft to rotate in the first rotating groove at the same time, releasing the limited position of the rotating shaft, and the operator can manually operate the rotating shaft to switch on.

[0009] Further, the other end of the fixed shaft extends into the first rotating groove and is slidably connected to the first rotating plate. The top of the fixed shaft is installed in the first rotating groove through a retaining clip. The fixed shaft is arranged in the first rotating groove through the retaining clip, which can limit the rotating shaft and at the same time make the motor idle and the rotating shaft can use the manual function.

[0010] Further, the other end of the rotating shaft extends outside the housing and is fixedly sleeved with a second rotating plate. The housing is provided with a closing contact switch and an opening contact switch that are electrically connected to the circuit breaker to switch between closing and opening. The outer circumference of the second rotating plate is provided with a triggering portion for triggering the closing contact switch or the opening contact switch. The second rotating plate rotates with the rotating shaft to trigger the closing contact switch or the opening contact switch.

[0011] Further, the triggering portion includes a first triggering portion and a second triggering portion protruding from both sides of the second rotating plate. The first triggering portion and the second triggering portion trigger the closing contact switch or the opening contact switch through the rotation of the second rotating plate, and send a signal to the circuit breaker for opening or closing operation.

[0012] Preferably, second rotation grooves are symmetrically arranged on the second rotating plate, and a limiting post is fixed on the housing. The other end of the limiting post extends into the second rotation groove and is slidably connected to the second rotating plate. The rotation angle of the second rotating plate is limited by the limiting post to prevent problems such as excessive rotation.

[0013] Preferably, one end of the rotating shaft extends outside the drawer and is connected with a rotating knob, and the other end extends into the circuit breaker and is connected with a switching structure for driving the circuit breaker to switch on and off. Personnel operate the rotating shaft by rotating the rotating knob to control the switching structure at the other end for manual switching on and manual switching off.

[0014] Preferably, the outer shell is arranged on the bottom plate, a sliding plate is arranged on the bottom plate, a worm is arranged in the outer shell and is meshed with the sliding plate, a jack is arranged on the worm, and the outer shell rotates the worm by inserting a handle into the jack to drive the circuit breaker drawer to be pushed in or pulled out on the bottom plate. The meshing connection of the worm and the sliding plate can make the stroke of manual pushing in and pulling out fixed, prevent problems such as collision damage caused by excessive pushing, and control the stroke within a controllable range.

[0015] The beneficial effects of the present utility model are as follows: The rotating shaft with manual function on the motor is automatically adjusted through the adjusting structure, and the handle on the panel is retained. When manual operation is required, only the handle needs to be rotated, without changing the operation habit. At the same time, manual and electric functions are realized. The manual function is used in case of emergency to ensure the safety of the equipment, and the occupied space is small. There is no need to additionally increase a switching mechanism, which can reduce the complexity of installing the manual and electric functions of the circuit breaker drawer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, obtaining other drawings based on these drawings still belongs to the scope of the present utility model.

[0017] Figure 1 It is a schematic diagram of the main structure of the present utility model;

[0018] Figure 2 It is an exploded structure diagram of the present utility model;

[0019] Figure 3 It is a schematic diagram of the structure of the electric mechanism in the switched-on state of the present utility model;

[0020] Figure 4 It is a schematic diagram of the structure of the electric mechanism in the switched-on state and capable of manual switching-off of the present utility model;

[0021] Figure 5 This is a schematic structural diagram of the opening state of the electric mechanism in the present utility model;

[0022] Figure 6 This is a schematic structural diagram of the state where the electric mechanism can be manually closed in the opening state of the present utility model;

[0023] Figure 7 This is a schematic structural diagram of the rear view angle of the electric mechanism in the present utility model;

[0024] Figure 8 This is a schematic structural diagram of the electric mechanism with the housing removed in the present utility model;

[0025] Figure 9 This is a schematic structural diagram of the upward view angle of the main structure;

[0026] Figure 10 This is a schematic structural diagram of the downward view angle of the main structure;

[0027] In the figure, 1. Outer shell; 11. Circuit breaker; 12. Clutch; 13. Electric mechanism; 131. Motor; 132. Rotating shaft; 133. Rotating knob; 134. Switching structure; 135. Housing; 136. Driving shaft; 2. Adjusting structure; 21. Driving plate; 22. First rotating plate; 221. First rotating groove; 23. Fixed shaft; 231. Blocking card; 24. Limit post; 25. Second rotating plate; 251. First triggering part; 252. Second triggering part; 253. Second rotating groove; 26. Closing contact switch; 27. Opening contact switch; 3. Worm; 31. Jack; 4. Bottom plate; 41. Slide plate. Detailed implementation manners

[0028] To make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0029] It should be noted that all the expressions using "first" and "second" in the embodiments of the present utility model are used to distinguish two entities or parameters with the same name but different identities. It can be seen that "first" and "second" are only for the convenience of expression and should not be construed as a limitation on the embodiments of the present utility model. This will not be elaborated one by one in the subsequent embodiments.

[0030] The terms of direction and position mentioned in the present utility model, such as "up", "down", "front", "rear", "left", "right", "inside", "outside", "top", "bottom", "side", etc., are only references to the directions or positions in the accompanying drawings. Therefore, the terms of direction and position used are for explaining and understanding the present utility model, rather than limiting the protection scope of the present utility model.

[0031] Such as Figure 1-6, as shown in Fig. 8, is an embodiment of a drawer of an electric operating circuit breaker 11 of the present utility model, including a housing 1. A circuit breaker 11, a clutch 12, and an electric mechanism 13 for switching the opening and closing of the circuit breaker 11 are provided inside the housing 1. The electric mechanism 13 includes a motor 131, a rotating shaft 132, and an adjusting structure 2. The adjusting structure 2 is used to adjust the state of the motor 131 so that the rotating shaft 132 can manually drive to switch the opening and closing state of the circuit breaker 11. By automatically adjusting the rotating shaft 132 with a manual function on the motor 131 through the adjusting structure 2, the handle on the panel is retained. When manual operation is required, only the handle needs to be rotated, without changing the operation habit. At the same time, manual and electric functions are realized. The manual function is used to ensure the safety of the equipment in case of emergency, and it occupies a small space. There is no need to additionally add a switching mechanism, which can reduce the complexity of installing the manual and electric functions of the circuit breaker 11 drawer.

[0032] The electric mechanism 13 further includes a housing 135 and a driving shaft 136 sleeved outside the rotating shaft 132 and connected to the motor 131. The adjusting structure 2 includes a driving plate 21 fixedly connected to one end of the driving shaft 136 extending outside the housing 135. A first rotating plate 22 is fixedly sleeved on the rotating shaft 132. A first rotating groove 221 is provided on the first rotating plate 22 and is linked with the driving plate 21 through a fixed shaft 23. The fixed shaft 23 is clamped with the first rotating groove 221 so that the rotating shaft 132 is in a limited state during electric opening and closing. By setting the sliding fit between the first rotating groove 221 and the fixed shaft 23 fixed on the driving plate 21, when the driving plate 21 rotates, it can drive the first rotating plate 22 to rotate. At this time, the rotating shaft 132 also rotates with the first rotating plate 22 and enters the limited state.

[0033] When the fixed shaft 23 is in the first position, the driving shaft 136 drives the driving plate 21 and the first rotating plate 22 to rotate clockwise to the closing position and then rotate back. The fixed shaft 23 rotates counterclockwise from the first position in the first rotating groove 221 to the second position, so that the rotating shaft 132 is released from the limited state and can be manually opened. After electric closing, the driving plate 21 rotates back to drive the fixed shaft 23 to rotate in the first rotating groove 221 at the same time, releasing the limited state of the rotating shaft 132, and the operator can manually operate the rotating shaft 132 to open.

[0034] When the fixed shaft 23 is in the second position, the drive shaft 136 drives the drive plate 21 and the second rotating plate 25 to rotate counterclockwise to the opening position and then rotate back. The fixed shaft 23 rotates clockwise from the second position in the first rotating groove 221 to the first position, so that the rotating shaft 132 is released from the limited position and can be manually closed. After electric opening, the drive shaft 136 drives the drive plate 21 to rotate back. The drive plate 21 drives the fixed shaft 23 to rotate simultaneously in the first rotating groove 221, releasing the limited position of the rotating shaft 132, and the operator can manually operate the rotating shaft 132 to close the switch.

[0035] The other end of the fixed shaft 23 extends into the first rotating groove 221 and is slidably connected to the first rotating plate 22. The top of the fixed shaft 23 is limited and installed in the first rotating groove 221 through a retaining clip 231. The fixed shaft 23 is arranged in the first rotating groove 221 through the retaining clip 231, which can limit the rotating shaft 132 while allowing the motor 131 to idle and enabling the use of the manual function for the rotating shaft 132.

[0036] What is different in this embodiment from the above embodiment is that as Figure 1-2 、 Figure 7 shown, the other end of the rotating shaft 132 extends outside the housing 135 and is fixedly sleeved with a second rotating plate 25. The housing 135 is provided with a closing contact switch 26 and a tripping contact switch 27 that are electrically connected to the circuit breaker 11 to switch between closing and tripping. The outer circumference of the second rotating plate 25 is provided with a triggering portion for triggering the closing contact switch 26 or the tripping contact switch 27. The second rotating plate 25 rotates following the rotating shaft 132 to trigger the closing contact switch 26 or the tripping contact switch 27.

[0037] The triggering portion includes a first triggering portion 251 and a second triggering portion 252 that are protrusions provided on both sides of the second rotating plate 25. The first triggering portion 251 and the second triggering portion 252 trigger the closing contact switch 26 or the tripping contact switch 27 through the rotating movement of the second rotating plate 25, and send a signal to the circuit breaker 11 for tripping or closing operations.

[0038] The second rotating plate 25 is symmetrically provided with second rotating grooves 253. The housing 135 is fixed with a limiting post 24. The other end of the limiting post 24 extends into the second rotating grooves 253 and is slidably connected to the second rotating plate 25. The rotation angle of the second rotating plate 25 is limited by the limiting post 24 to prevent problems such as excessive rotation.

[0039] What is different in this embodiment from the above embodiment is that as Figure 1-2 、 Figure 9-10As shown, one end of the rotating shaft 132 extends outside the drawer and is connected to a rotating knob 133, and the other end extends into the circuit breaker 11 and is connected to a switching structure 134 for driving the opening and closing of the circuit breaker 11. Personnel operate the rotating shaft 132 by rotating the knob 133 to control the switching structure 134 at the other end for manual closing and manual opening.

[0040] The housing 1 is provided on the bottom plate 4. A slide plate 41 is provided on the bottom plate 4. A worm 3 meshingly connected to the slide plate 41 is provided inside the housing 1. A jack 31 is provided on the worm 3. The housing 1 rotates the worm 3 by inserting a handle into the jack 31 to drive the drawer of the circuit breaker 11 to be pushed in or out on the bottom plate 4. The meshing connection between the worm 3 and the slide plate 41 can fix the stroke of manual pushing in and out, prevent problems such as collision damage caused by excessive pushing, and control the stroke within a controllable range.

[0041] Although the present invention has been described with reference to several specific embodiments, it should be understood that the present invention is not limited to the specific embodiments disclosed. The present invention aims to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. An electrically operated circuit breaker drawer, characterized in that: The invention comprises a shell, in which a circuit breaker, a clutch and an electric mechanism for switching the circuit breaker on and off are arranged. The electric mechanism comprises a motor, a rotating shaft and an adjusting structure. The adjusting structure is used to adjust the state of the motor so that the rotating shaft can be manually driven to switch the circuit breaker on and off.

2. The electrically operated circuit breaker drawer according to claim 1, characterized in that: The electric mechanism also includes a shell and a drive shaft connected to the motor and sleeved outside the rotating shaft. The adjustment structure includes a drive plate that extends from one end of the drive shaft to the outside of the shell and is fixedly connected. A first rotating plate is fixedly sleeved on the rotating shaft. The first rotating plate is provided with a first rotating groove that is linked to the drive plate through the fixed shaft. The fixed shaft is clamped with the first rotating groove so that the rotating shaft is in a limited state when the electric opening and closing is performed.

3. The electrically operated circuit breaker drawer according to claim 2, characterized in that: When the fixed shaft is in the first position, the driving shaft drives the driving plate and the first rotating plate to rotate clockwise to the closing position and then rotate back, and the fixed shaft rotates counterclockwise from the first position in the first rotating groove to the second position, so that the rotating shaft releases the limit state and can be manually opened.

4. The electrically operated circuit breaker drawer according to claim 3, characterized in that: When the fixed shaft is in the second position, the driving shaft drives the driving plate and the second rotating plate to rotate counterclockwise to the opening position and then rotate back, and the fixed shaft rotates clockwise from the second position in the first rotating groove to the first position, so that the rotating shaft is released from the limit state and can be manually closed.

5. The electrically operated circuit breaker drawer according to claim 2, characterized in that: The other end of the fixed shaft extends into the first rotating groove and is slidably connected to the first rotating plate. The top of the fixed shaft is installed in the first rotating groove through a stopper.

6. The electrically operated circuit breaker drawer according to claim 1, characterized in that: The other end of the rotating shaft extends to the outside of the shell and is fixedly sleeved with a second rotating plate. The shell is provided with a closing contact switch and an opening contact switch that are electrically connected to the circuit breaker to switch on and off. The outer periphery of the second rotating plate is provided with a triggering part for triggering the closing contact switch or the opening contact switch.

7. The electrically operated circuit breaker drawer according to claim 6, characterized in that: The triggering part comprises a first triggering part and a second triggering part which are convexly arranged on both sides of the second rotating plate, and the first triggering part and the second triggering part trigger the closing contact switch or the opening contact switch through the rotating action of the second rotating plate.

8. The electrically operated circuit breaker drawer as claimed in claim 6, characterized in that: The second rotating plate is symmetrically provided with a second rotating groove, and a limiting column is fixed on the shell, and the other end of the limiting column extends into the second rotating groove and is slidably connected to the second rotating plate.

9. The electrically operated circuit breaker drawer according to claim 1, characterized in that: One end of the rotating shaft extends to the outside of the drawer and is connected to a rotating knob, and the other end extends to the inside of the circuit breaker and is connected to a switching structure for driving the circuit breaker to open and close.

10. The electrically operated circuit breaker drawer according to claim 1, characterized in that: The shell is arranged on the bottom plate, the bottom plate is provided with a slide plate, the shell is provided with a worm gear meshed with the slide plate, the worm gear is provided with a socket, the shell is provided with a handle inserted into the socket to rotate the worm gear to drive the circuit breaker drawer to swing in or out on the bottom plate.

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