CN220604523U - Closing locking device of switch equipment - Google Patents

Abstract

A closing locking device of a switching device belongs to the technical field of low-voltage electric appliances. The switching device comprises a mechanism side plate, a switching-on half shaft, a manual switching-on assembly and a switching-on locking device, wherein the manual switching-on assembly is operated to realize manual switching-on, and the switching-on locking device comprises a micro switch connected in a switching-on loop in series and a locking electromagnet capable of moving between a first position and a second position, and is characterized in that: the manual closing component drives the locking plate to move between a stop position and a locking position, and when the manual closing component is not reset, the locking plate is positioned at the stop position to stop the locking electromagnet from moving from the second position to the first position; after the manual closing component is reset, the locking electromagnet moves from the second position to the first position, and the locking electromagnet blocks the locking plate from moving from the locking position to the stop position, so that the movement of the manual closing component is blocked, and error closing is prevented. The advantages are that: solves the problem of blocking in the prior art and prevents the false closing.

Description

Closing locking device of switch equipment

Technical Field

The utility model belongs to the technical field of piezoelectric devices, and particularly relates to a closing and locking device of a switch device.

Background

With the rapid development of national economy, the power demand is increasing. In the power transmission link of the power system and other fields, a vacuum circuit breaker is one of important electrical devices. Meanwhile, the locking device of the vacuum circuit breaker is an important device for closing protection of the circuit breaker, and the improvement of the reliability and convenience of the locking device of the vacuum circuit breaker becomes more significant. The closing locking device can effectively prevent the misoperation from causing the misoperation to cause the phenomenon of the misoperation of the breaker to be closed, ensure that the normal closing operation can be carried out when the breaker is in the working position or the test position, strengthen the control on operation equipment, and avoid the occurrence of related problems such as personal safety and the like caused by misoperation.

In the prior art, as shown in fig. 1, in general, a circuit breaker has a closing locking device, and after the circuit breaker is closed, a locking electromagnet 42 is de-energized, and a driving end of an iron core 421 mounted therein drops. However, if the manual switching-on operation is performed, after the manual switching-on operation, the manual driving may not be able to be timely withdrawn like the electric switching-on operation, and at this time, the driving end of the iron core 421 of the latching electromagnet 42 falls to the other side of the switching-on plate 7 fixedly connected with the switching-on half shaft 2, so that the circuit breaker is blocked, and the circuit breaker cannot be smoothly switched on.

In view of the above prior art, there is a need for a reasonable improvement in the structure of the closing latch of the existing circuit breaker. To this end, the applicant has made an advantageous design, and the technical solutions described below are produced in this context.

Disclosure of Invention

The utility model aims to provide a closing locking device of a switching device, which is additionally provided with a locking plate, so that on one hand, when a manual closing component is not reset, an iron core can be prevented from falling down, the problem of blocking in the prior art is solved, and on the other hand, when the manual closing component is not reset, the manual closing component can be locked, the manual erroneous closing is prevented, and the safety of the switching device is improved.

The utility model accomplishes the task like this, a kind of switch device closing locking device, the said switch device includes a pair of mechanism side plates that face each other sets up, rotate the closing semi-axis set up between a pair of mechanism side plates, manual closing assembly and closing locking device set up on the mechanism side plate fixedly, the said manual closing assembly acts and drives the closing semi-axis to rotate and realize the manual closing of the switch device, the said closing locking device includes the micro-gap switch connected in circuit of switch device closing and locking electromagnet that can move between first position and second position, when the secondary circuit loses electricity, locking electromagnet is in the first position, when the secondary circuit gets electricity, locking electromagnet moves to the second position, trigger the micro-gap switch to act, closing circuit, can close the operation, characteristic is: the switch device also comprises a lock plate fixedly arranged on the manual closing component, the manual closing component drives the lock plate to move between a stop position and a locking position, and when the manual closing component is not reset, the lock plate is positioned at the stop position to stop the locking electromagnet from moving from the second position to the first position; after the manual closing component is reset, the locking electromagnet moves from the second position to the first position, and the locking electromagnet blocks the locking plate from moving from the locking position to the stop position, so that the manual closing component is blocked from moving, and error closing is prevented.

In a specific embodiment of the utility model, the manual closing component comprises a mounting bracket and an impact rod, wherein the mounting bracket is fixedly arranged on a side plate of the mechanism, the impact rod is arranged on the mounting bracket in a sliding manner, one end of the impact rod protrudes out of the mounting bracket to form a stress end for receiving external force, and the other end also protrudes out of the mounting bracket to form a striking end for driving the closing half shaft to rotate.

In another specific embodiment of the utility model, the mounting bracket comprises a mounting bottom plate fixedly connected with the mechanism side plate, two ends of the mounting bottom plate are bent to form a first bending plate and a second bending plate respectively, the first bending plate is provided with a first guide hole of the striking rod, the second bending plate is provided with a second guide hole of the striking rod, and two ends of the striking rod are respectively arranged between the first guide hole of the striking rod and the second guide hole of the striking rod.

In another specific embodiment of the present utility model, the manual closing assembly includes a return spring sleeved on the striking rod, one end of the return spring abuts against the second bending plate, and the other end of the return spring abuts against the boss of the striking rod.

In yet another embodiment of the utility model, the boss is a stepped surface extending to the end of the force-receiving end.

In still another specific embodiment of the present utility model, a locking portion is formed at one end of the locking plate, a through hole through which the iron core passes is provided in the locking portion, and a fixing portion fixedly connected to the force receiving end of the striking rod is formed by bending the other end of the locking plate.

In a further specific embodiment of the utility model, a bolt is threaded into the threaded hole at the stressed end of the striker rod after passing through the fixing hole in the fixing portion of the lock plate, thereby achieving a fixed connection of the lock plate and the striker rod.

In a further specific embodiment of the present utility model, the second bending plate is provided with a locking plate guiding hole, and one end of the locking plate passes through the locking plate guiding hole.

The utility model has the beneficial effects that due to the adoption of the structure, the utility model has the following advantages: when the manual closing component is not reset, the locking plate is positioned at a stop position to stop the locking electromagnet from moving from the second position to the first position, so that the iron core is prevented from falling down to cause blocking after the manual closing is completed; when the manual closing component is reset, the locking electromagnet moves from the second position to the first position, the locking electromagnet blocks the locking plate from moving from the locking position to the stop position, and further the movement of the manual closing component is blocked to prevent the false closing, so that the switching device has the function of preventing the false closing, and the safety of the switching device is improved.

Drawings

FIG. 1 is a schematic diagram of a circuit breaker employing a conventional closing lockout device when the circuit breaker is stuck;

fig. 2 is a schematic diagram of a state of the switching device when the manual closing component is not reset;

fig. 3 is a schematic diagram of a state of the switching device when the manual switch-on assembly is reset;

FIG. 4 is a schematic diagram illustrating the installation of the manual closing assembly and the locking plate according to the present utility model;

FIG. 5 is an exploded view of the manual closing assembly and lock plate of the present utility model;

FIG. 6 is an enlarged schematic view of a closing lockout device of the present utility model driving a micro-switch;

fig. 7 is an enlarged schematic view of the closing latch of the present utility model leaving the micro switch.

In the figure: 1. a mechanism side plate; 2. closing a half shaft; 3. manual closing components, 31, mounting brackets, 311, mounting bottom plates, 312, first bending plates, 3121, first guide holes of an impact rod, 313, second bending plates, 3131, second guide holes of the impact rod, 3132, guide holes of a lock plate, 32, impact rods, 321, a force end, 322, a striking end, 323, a boss, 325, a clamping groove, 33, a return spring and 34, a baffle plate. 4. The switching-on locking device comprises a switching-on locking device, a micro switch, a 411, an action end, a 42, a locking electromagnet, a 421, an iron core, a 4211, a driving end and a 4212, and a trigger end; 5. lock plate, 51, locking part, 511, through hole, 52, fixing part, 521 and fixing hole; 6. a limiting pin; 7. a shutter plate; 8. a closing button; 9. a reset torsion spring; 10. and (5) a bolt.

Detailed Description

The following detailed description of specific embodiments of the utility model, while given in connection with the accompanying drawings, is not intended to limit the scope of the utility model, and any changes that may be made in the form of the inventive concepts described herein, without departing from the spirit and scope of the utility model.

In the following description, any reference to the directions or azimuths of up, down, left, right, front and rear is based on the positions shown in the corresponding drawings, and therefore, should not be construed as a limitation on the technical solutions provided by the present utility model.

Referring to fig. 2 and 3, the present utility model relates to a closing and locking device of a switching device, where the switching device includes a pair of mechanism side plates 1 disposed opposite to each other, a closing half shaft 2 rotatably disposed between the pair of mechanism side plates 1, a manual closing component 3 fixedly disposed on the mechanism side plates 1, and a closing and locking device 4 according to the present utility model. The manual closing assembly 3 acts to drive the closing half shaft 2 to rotate so as to realize manual closing of the switch device.

As shown in fig. 2, 3, 6 and 7, the closing locking device 4 includes a micro switch 41 connected in series in a closing circuit of the switching device and a locking electromagnet 42 capable of moving between a first position and a second position, when the secondary circuit is powered off, the locking electromagnet 42 is in the first position, when the secondary circuit is powered on, the locking electromagnet 42 moves to the second position, the micro switch 41 is triggered to act, the closing circuit is closed, and the closing operation can be performed. The locking electromagnet 42 is arranged at the side of the manual closing component 3, the locking electromagnet 42 is operated by the outside to obtain electricity, the iron core 421 of the locking electromagnet 42 drives the closing half shaft 2 to rotate, and the circuit breaker can be electrically closed. Specifically, a closing plate 7 is fixedly arranged on the closing half shaft 2, and an iron core 421 of the locking electromagnet 42 drives the closing half shaft 2 to rotate through impacting the closing plate 7. And a reset torsion spring 9 is sleeved on the closing half shaft 2, and the reset torsion spring 9 is used for resetting the closing plate 7. The limiting pin 6 is fixedly arranged above the closing plate 7, and the hasp amount of the closing half shaft 2 can be controlled by adjusting the screwing amount of the limiting pin 6.

As shown in fig. 2 to 5, the manual closing component 3 includes a mounting bracket 31, a striking rod 32, and a return spring 33, the mounting bracket 31 is fixedly disposed on the mechanism side plate 1, the striking rod 32 is slidably disposed on the mounting bracket 31, one end of the striking rod 32 protrudes out of the mounting bracket 31 to form a stress end 321 for receiving an external force, and the other end also protrudes out of the mounting bracket 31 to form a striking end 322 for driving the closing half shaft 2 to rotate.

The mounting bracket 31 comprises a mounting bottom plate 311 fixedly connected with the mechanism side plate 1, the mounting bracket 31 is fixed through the mounting bottom plate 311, two ends of the mounting bottom plate 311 are bent to form a first bending plate 312 and a second bending plate 313 respectively, the first bending plate 312 is provided with a first guide hole 3121 of an impact rod, the second bending plate 313 is provided with a second guide hole 3131 of the impact rod, and two ends of the impact rod 32, namely a stress end 321 and a striking end 322, protrude out of the mounting bracket 31 from the first guide hole 3121 of the impact rod and the second guide hole 3131 of the impact rod respectively.

The return spring 33 is disposed on the striking rod 32, specifically, the return spring 33 is sleeved on the striking rod 32, one end of the return spring abuts against the second bending plate 313, and the other end of the return spring abuts against the boss 323 of the striking rod 32. The boss 323 may be a small section of the middle of the striking rod 32, or may be a stepped surface extending to the end of the stress end 321, as shown in fig. 5, and the latter is preferred in this embodiment. Specifically, in this embodiment, a section of the striking rod 32 near the force-receiving end 321 is formed into a non-circular boss 323. The shape of the boss 323 is adapted to the shape of the first striker guiding hole 3121, and in this embodiment, the shape of the boss 323 and the shape of the first striker guiding hole 3121 are both square.

The striking end 322 of the striking rod 32 is provided with a clamping groove 325, and after the striking end 322 protrudes out of the striking rod second guiding hole 3131, the blocking piece 34 is clamped in the clamping groove 325. When the external force of the force receiving end 321 is removed, the return spring 33 provides a return force for returning the position of the striking rod 32, and the striking rod 32 cannot fall off from the striking rod second guide hole 3131 during the return process due to the blocking piece 34.

The switch device further comprises a locking plate 5 fixedly arranged on the manual closing component 3, the manual closing component 3 drives the locking plate 5 to move between a stop position and a locking position, and when the manual closing component 3 is not reset, the locking plate 5 is positioned at the stop position to prevent the locking electromagnet 42 from moving from the second position to the first position; after the manual closing component 3 is reset, the locking electromagnet 42 moves from the second position to the first position, and the locking electromagnet 42 blocks the lock plate 5 from moving from the locking position to the stop position, so that the movement of the manual closing component 3 is blocked, and error closing is prevented. Specifically, as shown in fig. 4 and 5, a locking portion 51 is formed at one end of the lock plate 5, and a through hole 511 through which the core 421 passes is provided in the locking portion 51. The second bending plate 313 of the mounting bracket 31 is provided with a locking plate guiding hole 3132, and the locking part 51 of the locking plate 5 passes through the locking plate guiding hole 3132 to enable the driving end 4211 of the iron core 421 to be positioned in the through hole 511 of the locking part 51 when the switch device resets the manual switch-on assembly 3. The other end of the lock plate 5 is bent to form a fixing part 52 fixedly connected with the stress end 321 of the striking rod 32, so that the lock plate 5 is fixedly connected with the striking rod 32. In this embodiment, a bolt 10 passes through a fixing hole 521 on the fixing portion 52 and is screwed into a threaded hole at the end of the stressed end 321, so as to fix the two. As shown in fig. 2, a closing button 8 is disposed at the other side of the manual closing assembly 3, and pressing the closing button 8 can drive the striking rod 32 to move toward the closing plate 7. Of course, it is also possible that the locking portion 51 is not provided with a through hole 511, after the manual closing component 3 is reset, the end portion of the locking portion 51 is located at the left side of the driving end 4211, that is, the latching electromagnet 42 can smoothly move from the second position to the first position, and the iron core 421 of the latching electromagnet 42 is located on the moving path of the locking plate 5, so that the manual closing component 3 can be blocked from moving to prevent erroneous closing.

With continued reference to fig. 2 and 3 and with reference to fig. 6 and 7, the working principle of the closing and locking device of the present utility model is as follows:

as shown in fig. 2 and 6, when the latching electromagnet 42 is in the second position, the trigger end 4212 of the iron core 421 presses the acting end 411 of the micro switch 41 to switch on the closing circuit, and the striking rod 32 is driven to move forward by pressing the closing button 8, so that the striking plate 7 drives the closing half shaft 2 to rotate.

As shown in fig. 3 and 7, the latching electromagnet 42 is in the first position, the trigger end 4212 of the iron core 421 leaves the action end 411 of the micro switch 41, the switching circuit is disconnected, at this time, if the manual switching-on assembly 3 is operated, the locking plate 5 is driven to move, the iron core 421 of the latching electromagnet 42 is located on the moving path of the locking plate 5, that is, the locking plate 5 is locked by the driving end 4211, and cannot move towards the direction of the switching plate 7, the manual switching-on assembly 3 cannot be driven by operating the switching button 8, and the switching device cannot switch on, so that the manual erroneous switching-on can be prevented. At this time, the latching electromagnet 42 is not electrified, that is, the trigger end 4212 leaves the action end 411 of the micro switch 41, and the closing circuit is opened, so that the outside cannot operate the latching electromagnet 42 to obtain electricity, and the electric false closing can be prevented.

In summary, when the manual closing assembly 3 is not reset, that is, the manual driving is not completely withdrawn, as shown in fig. 2, the locking plate 5 is at the stop position, and the latching electromagnet 42 is blocked from moving from the second position to the first position, so as to prevent the iron core 421 from falling to cause locking after the manual closing is completed; when the manual closing component 3 is reset, the manual driving is completely withdrawn, as shown in fig. 3, the locking electromagnet 42 moves from the second position to the first position, and the locking electromagnet 42 blocks the locking plate 5 from moving from the locking position to the stop position, so that the movement of the manual closing component 3 is blocked, and the false closing is prevented.

Claims (8)

1. The utility model provides a switching-on locking device of switchgear, switchgear include a pair of mechanism curb plate (1) that face to each other set up, rotate and set up closing half axle (2) between a pair of mechanism curb plate (1), fixed manual switching-on subassembly (3) and closing locking device (4) that set up on mechanism curb plate (1), manual switching-on subassembly (3) action drive closing half axle (2) rotate and realize the manual switching-on of switchgear, closing locking device (4) including establish ties micro-gap switch (41) and the latching electromagnet (42) that can remove between first position and second position in switchgear switching-on circuit, when the secondary circuit loses electricity, latching electromagnet (42) are in first position, when the secondary circuit gets the electricity, the latching electromagnet (42) removes to the second position, triggers micro-gap switch (41) action, switch-on circuit, can carry out switching-on operation, its characterized in that: the switch device further comprises a locking plate (5) fixedly arranged on the manual closing component (3), the manual closing component (3) drives the locking plate (5) to move between a stop position and a locking position, and when the manual closing component (3) is not reset, the locking plate (5) is positioned at the stop position to stop the locking electromagnet (42) from moving from the second position to the first position; after the manual closing component (3) is reset, the locking electromagnet (42) moves from the second position to the first position, and the locking electromagnet (42) blocks the locking plate (5) from moving from the locking position to the stopping position, so that the manual closing component (3) is blocked from moving, and error closing is prevented.

2. The closing lockout device of a switching device of claim 1, wherein: the manual closing component (3) comprises a mounting bracket (31) and a striking rod (32), wherein the mounting bracket (31) is fixedly arranged on a mechanism side plate (1), the striking rod (32) is arranged on the mounting bracket (31) in a sliding mode, one end of the striking rod (32) protrudes out of the mounting bracket (31) to form a stress end (321) for receiving external force, and the other end of the striking rod protrudes out of the mounting bracket (31) to form a striking end (322) for driving the closing half shaft (2) to rotate.

3. The closing lockout device of a switching device of claim 2, wherein: the mounting bracket (31) comprises a mounting bottom plate (311) fixedly connected with the mechanism side plate (1), two ends of the mounting bottom plate (311) are bent to form a first bending plate (312) and a second bending plate (313) respectively, the first bending plate (312) is provided with a first impact rod guide hole (3121), the second bending plate (313) is provided with a second impact rod guide hole (3131), and two ends of the impact rod (32) protrude out of the mounting bracket (31) from the first impact rod guide hole (3121) and the second impact rod guide hole (3131) respectively.

4. A closing lockout device of a switching device according to claim 3, wherein: the manual closing assembly (3) comprises a return spring (33), the return spring (33) is sleeved on the impact rod (32), one end of the return spring is abutted against the second bending plate (313), and the other end of the return spring is abutted against the boss (323) of the impact rod (32).

5. The closing lockout device of a switching device of claim 4, wherein: the boss (323) is a step surface extending to the end of the stress end (321).

6. The closing lockout device of a switching device of claim 2, wherein: one end of the lock plate (5) forms a locking part (51), a through hole (511) for the iron core (421) to pass through is arranged on the locking part (51), and the other end is bent to form a fixing part (52) fixedly connected with the stress end (321) of the impact rod (32).

7. The closing lockout device of a switching device of claim 6, wherein: a bolt (10) passes through a fixing hole (521) on a fixing part (52) of the lock plate (5) and is screwed into a threaded hole at the end part of a stress end (321) of the impact rod (32), so that the lock plate (5) and the impact rod (32) are fixedly connected.

8. A closing lockout device of a switching device according to claim 3, wherein: the second bending plate (313) is provided with a locking plate guide hole (3132), and one end of the locking plate (5) penetrates through the locking plate guide hole (3132).