CN113555812B - Circuit breaker handcart and switch cabinet - Google Patents
Circuit breaker handcart and switch cabinet Download PDFInfo
- Publication number
- CN113555812B CN113555812B CN202110693459.4A CN202110693459A CN113555812B CN 113555812 B CN113555812 B CN 113555812B CN 202110693459 A CN202110693459 A CN 202110693459A CN 113555812 B CN113555812 B CN 113555812B
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- limiting plate
- transmission rod
- circuit breaker
- pushing
- closing
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- 230000005540 biological transmission Effects 0.000 claims abstract description 166
- 238000005096 rolling process Methods 0.000 claims description 18
- 230000006835 compression Effects 0.000 claims description 14
- 238000007906 compression Methods 0.000 claims description 14
- 230000033001 locomotion Effects 0.000 claims description 14
- 230000009286 beneficial effect Effects 0.000 description 16
- 230000006872 improvement Effects 0.000 description 16
- 238000000034 method Methods 0.000 description 11
- 238000013461 design Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 8
- 230000009471 action Effects 0.000 description 7
- 238000012546 transfer Methods 0.000 description 7
- 230000007246 mechanism Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/127—Withdrawal mechanism
- H02B11/133—Withdrawal mechanism with interlock
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/167—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal truck type
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Trip Switchboards (AREA)
Abstract
The invention relates to a circuit breaker handcart and a switch cabinet. A circuit breaker trolley comprising: the car body takes the moving direction of the car body in the switch cabinet as the front-back direction; the lead screw extends along the front-back direction and is arranged on the vehicle body and used for driving the vehicle body to move along the front-back direction in the switch cabinet; the limiting plate is assembled on the vehicle body and is positioned beside the lead screw; the breaker is arranged on the vehicle body; the opening and closing transmission rod is positioned above the lead screw and extends along the front-rear direction, and the front end of the opening and closing transmission rod is in transmission connection with the circuit breaker and is used for driving the circuit breaker to open and close; the limiting plate transmission rod extends along the up-down direction, a pushing structure is arranged between the limiting plate transmission rod and the opening and closing transmission rod, and the opening and closing transmission rod drives the limiting plate transmission rod to move along the up-down direction through the pushing structure when the opening and closing transmission rod moves towards the closing direction, so that the limiting plate transmission rod drives the limiting plate locking screw rod; the push rod resets the elastic piece, apply the elastic acting force to the limiting plate transmission rod, so as to reset the limiting plate transmission rod.
Description
Technical Field
The invention relates to a circuit breaker handcart and a switch cabinet.
Background
In power systems, interlocking devices are often used to avoid mishandling of circuit breakers to ensure personal safety. If the circuit breaker handcart is in a closing state when the circuit breaker handcart is overhauled and maintained in the switch cabinet, the circuit breaker handcart is in a dangerous state of pushing the circuit breaker handcart into the working position from the test position and pushing the circuit breaker handcart out of the test position from the working position. In order to prevent the live misoperation, an interlocking device needs to be installed on the circuit breaker handcart so that the circuit breaker handcart cannot swing in and out in a closing state.
In the prior art, the closing interlocking of the circuit breaker handcart is generally realized through electrical interlocking, but stable power supply is required to be provided by adopting the electrical interlocking, once the power supply is in a problem, the interlocking is invalid, and the problem of unreliability of the electrical interlocking can cause serious potential safety hazard.
Disclosure of Invention
The invention aims to provide a circuit breaker handcart, which solves the technical problem that the circuit breaker handcart is easy to cause interlocking failure by adopting electric interlocking in the prior art; the invention also aims to provide a switch cabinet.
In order to achieve the above purpose, the technical scheme of the circuit breaker handcart of the invention is as follows:
A circuit breaker trolley comprising:
The car body takes the moving direction of the car body in the switch cabinet as the front-back direction;
The lead screw extends along the front-back direction and is arranged on the vehicle body and used for driving the vehicle body to move along the front-back direction in the switch cabinet;
the limiting plate is assembled on the vehicle body and is positioned beside the lead screw;
The breaker is arranged on the vehicle body;
the opening and closing transmission rod is positioned above the lead screw and extends along the front-rear direction, and the front end of the opening and closing transmission rod is in transmission connection with the circuit breaker and is used for driving the circuit breaker to open and close;
The limiting plate transmission rod extends along the up-down direction, a pushing structure is arranged between the limiting plate transmission rod and the opening and closing transmission rod, and the opening and closing transmission rod drives the limiting plate transmission rod to move along the vertical direction through the pushing structure when the opening and closing transmission rod moves towards the closing direction, so that the limiting plate transmission rod drives the limiting plate locking screw rod;
The push rod resets the elastic piece, apply the elastic acting force to the limiting plate transmission rod, so as to reset the limiting plate transmission rod.
The beneficial effects are that: according to the circuit breaker handcart disclosed by the invention, the pushing structure is utilized to convert the front-back motion of the opening and closing transmission rod into the up-down motion of the limiting plate transmission rod, so that the limiting plate transmission rod drives the limiting plate locking screw rod, the circuit breaker handcart is ensured not to be misoperation in a closing state, and the safe operation of a power system and the personal safety of operators are ensured. In addition, adopt mechanical structure to realize the interlocking, can guarantee to avoid the problem of interlocking inefficacy, guaranteed safe in utilization.
As a further improvement, the pushing structure comprises a pushing block and a pushing matching body, wherein the pushing block is provided with a pushing inclined plane, the pushing block is in pushing matching with the pushing matching body through the pushing inclined plane, one of the pushing block and the pushing matching body is arranged on the opening and closing transmission rod, and the other one of the pushing block and the pushing matching body is arranged on the limiting plate transmission rod.
The beneficial effects are that: the pushing inclined plane on the pushing block is utilized to realize turning transmission, so that the structure is simplified, and the timeliness of transmission is ensured.
As a further improvement, the pushing matching body is a rolling body.
The beneficial effects are that: by the design, friction force in the transmission process can be reduced.
As a further improvement, the pushing block comprises two block units, grooves are formed in opposite faces of the two block units, and the two block units are fixed together through screws and clamped on the opening and closing transmission rod.
The beneficial effects are that: the design does not need to change the structure of the opening and closing transmission rod, is convenient for modifying the existing circuit breaker handcart, and reduces the cost; and the position of the pushing block can be adjusted according to the requirement, so that the pushing block and the rolling body can be better matched in pushing.
As a further improvement, the push rod reset elastic piece is a pressure spring sleeved on the limiting plate transmission rod, the limiting plate transmission rod is provided with a pressure spring cap, and the pressure spring applies elastic acting force to the limiting plate transmission rod through the pressure spring cap.
The beneficial effects are that: by the design, the stability of the pressure spring in the extending and contracting process can be ensured.
As a further improvement, the vehicle body is provided with a sleeve, the pressure spring is positioned in the sleeve, the sleeve is provided with a cover plate, and the cover plate is used for limiting the pressure spring cap in the up-down direction.
As a further improvement, the compression spring cap is in threaded connection with the limiting plate transmission rod, the limiting plate transmission rod is also in threaded connection with a locking nut, and the locking nut is used for locking the compression spring cap on the limiting plate transmission rod.
The beneficial effects are that: the pressure spring cap is in threaded connection with the limiting plate transmission rod, so that the height of the limiting plate transmission rod can be adjusted, and the screw rod can be fully locked by the limiting plate.
As a further improvement, a linear bearing is further arranged in the sleeve, and the linear bearing is sleeved on the limiting plate transmission rod.
The beneficial effects are that: the linear bearing can reduce the resistance of the limiting plate transmission rod in the up-and-down movement process.
As a further improvement, the limiting plate is connected with a transmission plate, and the limiting plate transmission rod pushes the limiting plate locking screw rod through the transmission plate.
The beneficial effects are that: because original limiting plate position on the automobile body is later, through increasing the drive plate for limiting plate transfer line can apply effort to the limiting plate through the drive plate, and then makes limiting plate locking lead screw, avoids additionally setting up the limiting plate on the automobile body like this.
In order to achieve the above purpose, the technical scheme of the switch cabinet of the invention is as follows:
The cubical switchboard, including the cabinet body, the internal circuit breaker handcart that is equipped with of cabinet, circuit breaker handcart includes:
The car body takes the moving direction of the car body in the switch cabinet as the front-back direction;
The lead screw extends along the front-back direction and is arranged on the vehicle body and used for driving the vehicle body to move along the front-back direction in the switch cabinet;
the limiting plate is assembled on the vehicle body and is positioned beside the lead screw;
The breaker is arranged on the vehicle body;
the opening and closing transmission rod is positioned above the lead screw and extends along the front-rear direction, and the front end of the opening and closing transmission rod is in transmission connection with the circuit breaker and is used for driving the circuit breaker to open and close;
The limiting plate transmission rod extends along the up-down direction, a pushing structure is arranged between the limiting plate transmission rod and the opening and closing transmission rod, and the opening and closing transmission rod drives the limiting plate transmission rod to move along the up-down direction through the pushing structure when the opening and closing transmission rod moves towards the closing direction, so that the limiting plate transmission rod drives the limiting plate to lock the screw rod downwards;
The push rod resets the elastic piece, apply the elastic acting force to the limiting plate transmission rod, so as to reset the limiting plate transmission rod.
The beneficial effects are that: according to the circuit breaker handcart disclosed by the invention, the pushing structure is utilized to convert the front-back motion of the opening and closing transmission rod into the up-down motion of the limiting plate transmission rod, so that the limiting plate transmission rod drives the limiting plate locking screw rod, the circuit breaker handcart is ensured not to be misoperation in a closing state, and the safe operation of a power system and the personal safety of operators are ensured. In addition, adopt mechanical structure to realize the interlocking, can guarantee to avoid the problem of interlocking inefficacy, guaranteed safe in utilization.
As a further improvement, the pushing structure comprises a pushing block and a pushing matching body, wherein the pushing block is provided with a pushing inclined plane, the pushing block is in pushing matching with the pushing matching body through the pushing inclined plane, one of the pushing block and the pushing matching body is arranged on the opening and closing transmission rod, and the other one of the pushing block and the pushing matching body is arranged on the limiting plate transmission rod.
The beneficial effects are that: the pushing inclined plane on the pushing block is utilized to realize turning transmission, so that the structure is simplified, and the timeliness of transmission is ensured.
As a further improvement, the pushing matching body is a rolling body.
The beneficial effects are that: by the design, friction force in the transmission process can be reduced.
As a further improvement, the pushing block comprises two block units, grooves are formed in opposite faces of the two block units, and the two block units are fixed together through screws and clamped on the opening and closing transmission rod.
The beneficial effects are that: the design does not need to change the structure of the opening and closing transmission rod, is convenient for modifying the existing circuit breaker handcart, and reduces the cost; and the position of the pushing block can be adjusted according to the requirement, so that the pushing block and the rolling body can be better matched in pushing.
As a further improvement, the push rod reset elastic piece is a pressure spring sleeved on the limiting plate transmission rod, the limiting plate transmission rod is provided with a pressure spring cap, and the pressure spring applies elastic acting force to the limiting plate transmission rod through the pressure spring cap.
The beneficial effects are that: by the design, the stability of the pressure spring in the extending and contracting process can be ensured.
As a further improvement, the vehicle body is provided with a sleeve, the pressure spring is positioned in the sleeve, the sleeve is provided with a cover plate, and the cover plate is used for limiting the pressure spring cap in the up-down direction.
As a further improvement, the compression spring cap is in threaded connection with the limiting plate transmission rod, the limiting plate transmission rod is also in threaded connection with a locking nut, and the locking nut is used for locking the compression spring cap on the limiting plate transmission rod.
The beneficial effects are that: the pressure spring cap is in threaded connection with the limiting plate transmission rod, so that the height of the limiting plate transmission rod can be adjusted, and the screw rod can be fully locked by the limiting plate.
As a further improvement, a linear bearing is further arranged in the sleeve, and the linear bearing is sleeved on the limiting plate transmission rod.
The beneficial effects are that: the linear bearing can reduce the resistance of the limiting plate transmission rod in the up-and-down movement process.
As a further improvement, the limiting plate is connected with a transmission plate, and the limiting plate transmission rod pushes the limiting plate to lock the screw rod downwards through the transmission plate.
The beneficial effects are that: because original limiting plate position on the automobile body is later, through increasing the drive plate for limiting plate transfer line can apply effort to the limiting plate through the drive plate, and then makes limiting plate locking lead screw, avoids additionally setting up the limiting plate on the automobile body like this.
Drawings
Fig. 1 is a schematic view of a circuit breaker cart according to the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a schematic view of the structure of FIG. 2 from another perspective;
FIG. 4 is a schematic diagram illustrating assembly of the stop plate transmission rod and the sleeve of FIG. 1;
FIG. 5 is a right side view of FIG. 4;
In the figure: 11. a vehicle body; 12. a handle; 13. a circuit breaker; 14. the opening and closing transmission rod; 15. pushing blocks; 16. a rolling element; 17. a limiting plate transmission rod; 18. a lock nut; 19. a pressure spring cap; 20. a cover plate; 21. a sleeve; 22. inserting plate; 23. a drive plate; 24. a screw rod; 25. a limiting plate; 26. a pressure spring; 27. a linear bearing; 28. a fastening screw; 29. an operating mechanism; 30. a block unit; 31. a guide groove; 32. a guide protrusion; 33. and (5) flanging.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the invention, i.e., the embodiments described are merely some, but not all, of the embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
It is noted that relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, the terms "front," "rear," "upper," "lower," "left," and "right" are based on the orientation and positional relationship shown in the drawings, and are merely for convenience of description of the invention, and do not denote that the device or component in question must have a particular orientation, and thus should not be construed as limiting the invention.
The features and capabilities of the present invention are described in further detail below in connection with the examples.
Example 1 of the circuit breaker trolley of the invention:
As shown in fig. 1 to 3, the circuit breaker handcart includes a vehicle body 11, a circuit breaker 13, and an operating mechanism 29, the circuit breaker 13 being mounted on the vehicle body 11 with a moving direction of the vehicle body 11 in the switch cabinet as a front-rear direction, and moving in the front-rear direction together with the vehicle body 11; the vehicle body 11 is provided with a screw 24, the screw 24 extends along the front-back direction, the rear end of the screw 24 is connected with a handle 12, and the handle 12 drives the vehicle body 11 to move along the front-back direction in the switch cabinet. The circuit breaker 13 is a dc circuit breaker.
As shown in fig. 3, a limiting plate 25 is arranged above the side of the screw 24, the limiting plate 25 is assembled on the vehicle body 11 in a swinging way, a limiting plate reset spring is arranged on the vehicle body 11 and is a torsion spring for applying elastic acting force to the limiting plate 25 so as to reset the limiting plate 25. It should be noted that, the cooperation structure of the limiting plate 25 and the limiting plate return spring is a conventional structure, when the lead screw 24 rotates forward to drive the vehicle body 11 from the test position to the working position, the limiting plate 25 will be clamped into the spiral groove of the lead screw 24, so that the lead screw 24 cannot continue to rotate forward, and the vehicle body 11 is prevented from continuing to move forward, but the lead screw 24 can rotate reversely, so that the vehicle body 11 moves from the working position to the test position.
As shown in fig. 2 and 3, an opening and closing transmission rod 14 is arranged above the screw rod 24, the opening and closing transmission rod 14 extends along the front-back direction, the front end of the opening and closing transmission rod 14 is in transmission connection with the circuit breaker 13, the rear end of the opening and closing transmission rod 14 is in transmission connection with an operating mechanism 29 through a crank arm, and the operating mechanism 29 drives the circuit breaker 13 to open and close through the opening and closing transmission rod 14.
In this embodiment, a limiting plate driving rod 17 is disposed between the opening and closing driving rod 14 and the lead screw 24, the limiting plate driving rod 17 extends along the vertical direction, a pushing structure is disposed between the limiting plate driving rod 17 and the opening and closing driving rod 14, when the opening and closing driving rod 14 moves towards the closing direction, the opening and closing driving rod 14 drives the limiting plate driving rod 17 to move downwards through the pushing structure, so that the limiting plate driving rod 17 pushes the limiting plate 25 to be clamped into the spiral groove of the lead screw 24 downwards, and when the circuit breaker 13 is at the closing position, the lead screw 24 cannot rotate in either the forward direction or the reverse direction, and personal safety of staff is ensured. In other embodiments, the limiting plate is located below the side of the screw, and when the opening and closing transmission rod moves towards the closing direction, the opening and closing transmission rod drives the limiting plate transmission rod to move upwards through the pushing structure, so that the limiting plate transmission rod pulls the limiting plate to be clamped into the spiral groove of the screw upwards, and the screw is locked.
In the embodiment, the pushing structure comprises a pushing block 15 and a rolling body 16, wherein a pushing inclined surface is arranged on the pushing block 15 and is used for being in pushing fit with the outer peripheral surface of the rolling body 16 so as to reduce friction force in the transmission process; wherein, the pushing block 15 is fixedly arranged on the opening and closing transmission rod 14, and the rolling body 16 is rotationally assembled at the upper end of the limiting plate transmission rod 17. In other embodiments, the pushing block is fixedly arranged at the upper end of the limiting plate transmission rod, and the rolling body is rotationally assembled on the opening and closing transmission rod.
In the present embodiment, the rolling elements 16 are rolling bearings. In other embodiments, the limiting plate transmission rod is provided with a rotating shaft, and the rolling bodies are rollers sleeved on the rotating shaft.
In this embodiment, the pushing block 15 includes two block units 30, the opposite surfaces of the two block units 30 are respectively provided with a groove, and the two block units 30 are fixed together by screws and clamped on the opening and closing transmission rod 14, so that the design is that the structure of the opening and closing transmission rod 14 is not required to be changed, the transformation of the existing circuit breaker handcart is facilitated, and the cost is reduced.
As shown in fig. 4 and 5, a sleeve 21 is fixedly arranged on the vehicle body 11, the sleeve 21 is sleeved on the limiting plate transmission rod 17, a pressure spring 26 is arranged in the sleeve 21, the pressure spring 16 is sleeved on the limiting plate transmission rod 17, and the pressure spring 26 forms a push rod reset elastic piece; the limiting plate transmission rod 17 is provided with a pressure spring cap 19, the pressure spring cap 19 is positioned above the pressure spring 26, and the pressure spring 26 applies upward elastic acting force to the limiting plate transmission rod 17 through the pressure spring cap 19 so as to reset the limiting plate transmission rod 17.
In this embodiment, the inner wall of the sleeve 21 is provided with a guide groove 31, the guide groove 31 extends along the vertical direction, the pressure spring cap 19 is provided with a guide protrusion 32, and the guide groove 31 is in guide fit with the guide protrusion 32, so that the limiting plate transmission rod 17 can only move along the axial direction thereof, but cannot rotate along the circumferential direction thereof, and the rolling bodies 16 are ensured not to deflect.
In this embodiment, the upper end of the sleeve 21 is fixed with a cover plate 20 by a fastening screw 28, and the cover plate 20 is used for limiting the compression spring cap 19 in an upward direction.
In this embodiment, the sleeve 21 is further provided with a linear bearing 27, the linear bearing 27 is sleeved on the limiting plate transmission rod 17, and the linear bearing 27 can reduce the resistance of the limiting plate transmission rod 17 in the vertical movement process.
In this embodiment, the compression spring cap 19 is screwed on the limiting plate driving rod 17, so as to adjust the height of the limiting plate driving rod 17, further adjust the distance of the pushing block 15 pushing the rolling body 16 downwards, and ensure that the limiting plate 25 can be fully clamped into the spiral groove of the screw 24. The limiting plate transmission rod 17 is further connected with a locking nut 18 in a threaded mode, and the locking nut 18 is located above the pressure spring cap 19 and used for locking the pressure spring cap 19 on the limiting plate transmission rod 17. In other embodiments, the compression spring cap may be welded to the stop plate drive rod, in which case no lock nut is required.
As shown in fig. 3, the limiting plate 25 is connected with a driving plate 23, and the limiting plate driving rod 17 pushes the limiting plate 25 to be clamped into the spiral groove of the screw 24 downwards through the driving plate 23, so that the design is adopted, and the modification of the limiting plate 25 on the conventional circuit breaker handcart is avoided.
In this embodiment, the driving plate 23 has an upturned flange 33, the lower part of the driving rod 17 of the limiting plate is provided with a plugboard 22, and the socket width of the plugboard 22 is larger than the thickness of the flange 33, so that the plugboard 22 is conveniently inserted on the flange 33. In other embodiments, the plugged socket width may be equal to the thickness of the flange.
When the breaker 13 is switched on, the switching-on/off transmission rod 14 moves backwards, the pushing block 15 fixed on the switching-on/off transmission rod 14 drives the limiting plate transmission rod 17 to move downwards, the plugboard 22 at the lower end of the limiting plate transmission rod 17 moves downwards and is inserted into the flanging 33 of the transmission plate 23, the transmission plate 23 drives the limiting plate 25 to move downwards, so that the limiting plate 25 is clamped into the spiral groove of the screw rod 24, the screw rod 24 is locked, the handle 12 can not drive the screw rod to rotate forwards or reversely, and therefore the breaker handcart can not move, and the live-line breaker handcart can not be caused. When the limiting plate transmission rod 17 moves downwards, the compression spring cap 19 thereon compresses the compression spring 26, so that the compression spring 26 stores energy.
When the breaker 13 is opened, the opening and closing transmission rod 14 moves forwards, the pushing block 15 releases the pushing of the limiting plate transmission rod 17, the limiting plate transmission rod 17 moves upwards under the action of the pressure spring 26, and meanwhile, the limiting plate 25 resets under the action of the limiting plate reset spring, so that the lead screw 24 is unlocked, and the handle 12 can drive the lead screw 24 to rotate forwards or reversely.
According to the circuit breaker handcart disclosed by the invention, the pushing structure is utilized to convert the forward and backward movement of the opening and closing transmission rod into the up and down movement of the limiting plate transmission rod, so that the limiting plate transmission rod drives the limiting plate to be clamped into the spiral groove of the screw rod, the circuit breaker handcart is ensured not to be operated by mistake in a closing state, and the safe operation of a power system and the personal safety of operators are ensured. In addition, adopt mechanical structure to realize the interlocking, can guarantee to avoid the problem of interlocking inefficacy, guaranteed safe in utilization.
Example 2 of the circuit breaker trolley of the invention:
The difference between this embodiment and embodiment 1 is that in embodiment 1, the pushing structure includes a pushing block 15 and a rolling body 16, the pushing block 15 is fixedly arranged on the opening and closing transmission rod 14, the rolling body 16 is rotatably assembled at the upper end of the limiting plate transmission rod 17, a pushing inclined plane is arranged on the pushing block 15, and the pushing inclined plane is in pushing fit with the peripheral surface of the rolling body 16 so as to convert the front-back movement of the opening and closing transmission rod 14 into the up-down movement of the limiting plate transmission rod 17. In this embodiment, the pushing structure includes two pushing blocks, one of which is fixedly arranged on the opening and closing transmission rod, and the other of which is fixedly arranged at the upper end of the limiting plate transmission rod, wherein both pushing blocks are provided with pushing inclined planes, and the pushing blocks are matched with each other by pushing through the two pushing inclined planes so as to convert the front-back motion of the opening and closing transmission rod into the up-down motion of the limiting plate transmission rod. In other embodiments, one of the pushing blocks has a pushing bevel and the other pushing block has a pushing cambered surface.
Example 3 of the circuit breaker trolley of the invention:
The difference between this embodiment and embodiment 1 is that in embodiment 1, the pushing block 15 includes two block units 30, the opposite surfaces of the two block units 30 are provided with grooves, and the two block units 30 are fixed together by screws and clamped on the opening and closing transmission rod 14. In the embodiment, the pushing block is of an integrated structure and is directly welded on the opening and closing transmission rod.
Example 4 of the circuit breaker trolley of the invention:
The difference between this embodiment and embodiment 1 is that in embodiment 1, the push rod reset elastic member is a pressure spring 26 sleeved on the limiting plate transmission rod 17, the limiting plate transmission rod 17 is provided with a pressure spring cap 19, the pressure spring cap 19 is located above the pressure spring 26, and the pressure spring 26 applies an upward elastic force to the limiting plate transmission rod 17 through the pressure spring cap 19. In this embodiment, the push rod elastic component that resets is the extension spring, is equipped with the extension spring board on the limiting plate transfer line, and the extension spring board is in the below of extension spring, and the upper end of extension spring is connected on the automobile body, and the lower extreme of extension spring is connected on the extension spring board, and the extension spring applys ascending elastic force to the limiting plate transfer line through the extension spring board.
Example 5 of the circuit breaker trolley of the invention:
the difference between this embodiment and embodiment 1 is that in embodiment 1, the limiting plate 25 is swingably fitted to the vehicle body 11, and when the limiting plate transmission rod 17 moves downward, the limiting plate 25 is swung downward accordingly to lock the screw 24; when the limiting plate transmission rod 17 moves upwards, the limiting plate 25 swings upwards to reset under the action of the torsion spring so as to unlock the screw 24. In the embodiment, the limiting plate is assembled on the vehicle body in a floating manner in the up-down direction through the pressure spring, and when the limiting plate transmission rod moves downwards, the limiting plate moves downwards along with the limiting plate so as to lock the screw rod; when the limiting plate transmission rod moves upwards, the limiting plate moves upwards to reset under the action of the pressure spring so as to unlock the screw rod.
Example 6 of the circuit breaker trolley of the invention:
The difference between this embodiment and embodiment 1 is that in embodiment 1, the limiting plate 25 of the original circuit breaker handcart is utilized, the limiting plate 25 is connected with the driving plate 23, and the limiting plate driving rod 17 pushes the limiting plate 25 to be clamped into the spiral groove of the screw 24 downwards through the driving plate 23. In this embodiment, additionally design limiting plate on the automobile body to with the limiting plate design under the limiting plate transfer line, then need not to set up the transfer line again, but in the spiral groove of screw rod is gone into to direct drive limiting plate downward card through the limiting plate transfer line.
Example 7 of the circuit breaker trolley of the invention:
The present embodiment differs from embodiment 1 in that in embodiment 1, the limiting plate 25 is snapped down into the spiral groove of the screw 24 to lock the screw. In this embodiment, the lower part of the limiting plate is provided with a locking concave part, and after the limiting plate moves downwards, the locking concave part is clamped on the spiral protrusion of the screw rod so as to lock the screw rod.
In the embodiment of the switch cabinet of the present invention, the switch cabinet includes a cabinet body, and a circuit breaker handcart is disposed in the cabinet body, and the circuit breaker handcart has the same structure as any one of embodiments 1 to 7 of the circuit breaker handcart, and is not described herein.
The above description is only a preferred embodiment of the present invention, and the patent protection scope of the present invention is defined by the claims, and all equivalent structural changes made by the specification and the drawings of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The circuit breaker handcart, its characterized in that includes:
A vehicle body (11) that takes the movement direction of the vehicle body (11) in the switch cabinet as the front-back direction;
the lead screw (24) extends along the front-back direction and is arranged on the vehicle body (11) and is used for driving the vehicle body (11) to move along the front-back direction in the switch cabinet;
the limiting plate (25) is assembled on the vehicle body (11) and is positioned beside the lead screw (24);
A breaker (13) provided on the vehicle body (11);
the opening and closing transmission rod (14) is arranged above the lead screw (24) and extends along the front-back direction, and the front end of the opening and closing transmission rod (14) is in transmission connection with the circuit breaker (13) and is used for driving the circuit breaker (13) to open and close;
The limiting plate transmission rod (17) extends along the up-down direction, a pushing structure is arranged between the limiting plate transmission rod (17) and the opening and closing transmission rod (14), and when the opening and closing transmission rod (14) moves towards the closing direction, the opening and closing transmission rod (14) drives the limiting plate transmission rod (17) to move along the up-down direction through the pushing structure, so that the limiting plate transmission rod (17) drives the limiting plate (25) to lock the lead screw (24);
the push rod reset elastic piece applies elastic acting force to the limiting plate transmission rod (17) so as to reset the limiting plate transmission rod (17).
2. The circuit breaker handcart according to claim 1, wherein the pushing structure comprises a pushing block (15) and a pushing matching body, the pushing block (15) is provided with a pushing inclined plane, the pushing block (15) is in pushing matching with the pushing matching body through the pushing inclined plane, one of the pushing block (15) and the pushing matching body is arranged on the opening and closing transmission rod (14), and the other of the pushing block (15) and the pushing matching body is arranged on the limiting plate transmission rod (17).
3. The circuit breaker trolley according to claim 2, characterized in that the pushing engagement body is a rolling body (16).
4. The circuit breaker handcart according to claim 2, characterized in that the pushing block (15) comprises two block units (30), grooves are formed on opposite surfaces of the two block units (30), and the two block units (30) are fixed together through screws and clamped on the opening and closing transmission rod (14).
5. The circuit breaker handcart according to any one of claims 1 to 4, characterized in that the push rod resetting elastic piece is a pressure spring (26) sleeved on a limiting plate transmission rod (17), a pressure spring cap (19) is arranged on the limiting plate transmission rod (17), and the pressure spring (26) applies elastic acting force to the limiting plate transmission rod (17) through the pressure spring cap (19).
6. The circuit breaker handcart according to claim 5, characterized in that the cart body (11) is provided with a sleeve (21), the compression spring (26) is positioned in the sleeve (21), the sleeve (21) is provided with a cover plate (20), and the cover plate (20) is used for limiting the compression spring cap (19) in the up-down direction.
7. The circuit breaker handcart according to claim 6, characterized in that the compression spring cap (19) is in threaded connection with the limiting plate transmission rod (17), the limiting plate transmission rod (17) is also in threaded connection with a locking nut (18), and the locking nut (18) is used for locking the compression spring cap (19) on the limiting plate transmission rod (17).
8. The circuit breaker handcart according to claim 6, characterized in that a linear bearing (27) is further arranged in the sleeve (21), and the linear bearing (27) is sleeved on the limiting plate transmission rod (17).
9. Circuit breaker trolley according to any of claims 1 to 4, characterized in that the limiting plate (25) is connected with a drive plate (23), the limiting plate drive rod (17) pushing the limiting plate (25) locking screw (24) through the drive plate (23).
10. Switch cabinet comprising a cabinet body, wherein a circuit breaker trolley is arranged in the cabinet body, characterized in that the circuit breaker trolley is a circuit breaker trolley according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110693459.4A CN113555812B (en) | 2021-06-22 | 2021-06-22 | Circuit breaker handcart and switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110693459.4A CN113555812B (en) | 2021-06-22 | 2021-06-22 | Circuit breaker handcart and switch cabinet |
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| Publication Number | Publication Date |
|---|---|
| CN113555812A CN113555812A (en) | 2021-10-26 |
| CN113555812B true CN113555812B (en) | 2024-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110693459.4A Active CN113555812B (en) | 2021-06-22 | 2021-06-22 | Circuit breaker handcart and switch cabinet |
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| Country | Link |
|---|---|
| CN (1) | CN113555812B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2006097C1 (en) * | 1992-02-21 | 1994-01-15 | Конструкторское бюро электроизделий | Circuit breaker |
| CN109787136A (en) * | 2019-01-21 | 2019-05-21 | 平高集团有限公司 | Circuit breaker trolley, switchgear and its interlock |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201266572Y (en) * | 2008-09-24 | 2009-07-01 | 常熟开关制造有限公司(原常熟开关厂） | Interlocking device of cart type high-voltage vacuum breaker |
| CN106098435B (en) * | 2016-08-08 | 2018-07-17 | 镇江大全伊顿电器有限公司 | Breaker misoperation-preventing closing interlocking mechanism |
| CN111430160A (en) * | 2020-05-09 | 2020-07-17 | 华仪电气股份有限公司 | Interlocking device and switch device |
-
2021
- 2021-06-22 CN CN202110693459.4A patent/CN113555812B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2006097C1 (en) * | 1992-02-21 | 1994-01-15 | Конструкторское бюро электроизделий | Circuit breaker |
| CN109787136A (en) * | 2019-01-21 | 2019-05-21 | 平高集团有限公司 | Circuit breaker trolley, switchgear and its interlock |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113555812A (en) | 2021-10-26 |
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