CN215898155U - Mechanical anti-misoperation lock of operating mechanism and front and rear doors of fixed switchgear - Google Patents

Abstract

The utility model discloses an operating mechanism of fixed switchgear and mechanical anti-misoperation lock of a front door and a rear door, wherein a locking plate I of the front door lock forms a socket I when being inserted into a locking block I; a jack II is formed when the locking plate II locked by the rear door is inserted into the locking block II; when the locking plate III locked by the access door is inserted into the locking block III, a socket III is formed, and the locking pin can be pressed into the socket III by oblique insertion; one end of a shifting fork of the linkage device is fixedly connected with the locking switching turntable, the other end of the shifting fork is connected with one end of a shifting rod in a clamping and embedding manner, one ends of a connecting rod I and a connecting rod II are respectively connected with two ends of a connecting rod, the other end of the shifting rod is connected with a connecting rod II, the other end of the connecting rod I faces the socket I, one end of a connecting rod IV faces the socket II, the other ends of the connecting rod II and the connecting rod IV are respectively connected with a connecting rod III through a connecting lever I and a connecting lever II, and the connecting rod III is fixed on the inner wall; the unlocking and locking of the front door, the rear door and the access door can be realized only by adopting the operation locking switching turntable, and the locking device has the advantages of simplicity in operation, safety and reliability.

Description

Mechanical anti-misoperation lock of operating mechanism and front and rear doors of fixed switchgear

Technical Field

The utility model belongs to the field of mechanical switch cabinets, and particularly relates to a mechanical anti-misoperation lockout of an operating mechanism and front and rear doors of fixed switch equipment.

Background

The five-prevention locking between an isolating switch operating mechanism on the existing domestic 12kV to 40.5kV fixed switch equipment and the front door and the rear door of the switch equipment generally adopts a mode of mixing mechanical locking, five-prevention program locking and electric locking. Wherein, five prevent program lockings, need realize through the tool to lock of certain program operation control, the procedure is more complicated, and the installation is more loaded down with trivial details, and the key is lost easily among the installation and debugging process, and the debugging is improper still unreliable, therefore five prevent program lockings use less and less in the mistake of preventing shutting of cubical switchboard, require to adopt pure machinery usually to prevent mistake shutting. Under the requirement, a simple, safe and reliable pure mechanical five-prevention locking between an isolating switch operating mechanism of the fixed switchgear and front and rear doors of the switchgear needs to be designed and developed.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides the mechanical anti-misoperation locking between the operating mechanism of the fixed switch equipment and the front and rear doors, the unlocking and locking of the front and rear doors and the access door can be realized only by adopting the operation locking switching turntable, and the utility model has the advantages of simple operation, safety and reliability.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the mechanical anti-misoperation lock of an operating mechanism and front and rear doors of fixed switchgear comprises an isolating switch operating mechanism and a lock switching turntable arranged on the isolating switch operating mechanism, and further comprises a front door lock, a rear door lock, an access door lock and a linkage device, wherein the front door lock comprises a lock plate I and a lock block I, the rear door lock comprises a lock plate II and a lock block II, and the access door lock comprises a lock plate III, a lock block III, an inclined plug and a lock pin;

the locking plate I is arranged on a front door, the locking block I is arranged on an upright post, and a socket I is formed when the locking plate I is inserted into the locking block I; the locking plate II is arranged on the rear door, the locking block II is arranged on the rear wall, and a socket II is formed when the locking plate II is inserted into the locking block II; the locking plate III is arranged on the access door, the locking block III is arranged on the upright post, a socket III is formed when the locking plate III is inserted into the locking block III, the inclined plug is arranged on the front door, and the inclined plug can press the locking pin into the socket III;

linkage contains driving lever, shift fork, connecting rod I, connecting rod II, connecting rod III, connecting rod IV, connecting lever I and connecting lever II, shift fork one end and the one end inlay card of shutting switching carousel fixed connection, the other end and driving lever are connected, the one end of connecting rod I and connecting rod II is connected with the both ends of connecting rod respectively, the other end and the connecting rod II of driving lever are connected, the other end of connecting rod I is just facing socket I, the one end of connecting rod IV is just to socket II, the other end of connecting rod II and connecting rod IV is connected through connecting lever I and connecting lever II and connecting rod III respectively, connecting rod III is fixed on the inner wall.

Furthermore, the locking block I comprises a locking lug I, a locking device I and a lock cylinder I, one surface of the locking lug I is used for fixing the upright post, the other surface of the locking lug I is used for fixing the locking device I, the fixing locking device I and the locking lug I are respectively provided with through holes I corresponding in position, the lock cylinder I is embedded into the locking device I, and one end of the lock cylinder I is located between 2 opposite through holes I of the locking device I in a non-extrusion state; the locking plate I is provided with a through hole I, when the locking plate I is inserted into the locking block I, one end of the lock cylinder I is far away from the through hole I, and the locking plate I, the locking lug I and the through hole I on the locking device I form a socket I.

Furthermore, the locking block II comprises a locking lug II, a locking device II and a lock cylinder II, one surface of the locking lug II is used for fixing the rear wall, the other surface of the locking lug II is used for fixing the locking device II, the fixing locking device II and the locking lug II are respectively provided with through holes II corresponding in position, the lock cylinder II is embedded in the locking device II, and one end of the lock cylinder II is located between 2 opposite through holes II of the locking device II in a non-extrusion state; the locking plate II is provided with a through hole II, when the locking plate II is inserted into the locking block II, one end of the lock core II is far away from the through hole II, and at the moment, the locking plate II, the locking lug II and the through hole II on the locking device II form a socket II.

Furthermore, the locking block III comprises a locking lug III, a locking device III and a lock cylinder III, one surface of the locking lug III is used for fixing the upright post, the other surface of the locking lug III is used for fixing the locking device III, the fixed locking device III and the locking lug III are respectively provided with through holes III corresponding in position, the lock cylinder III is embedded in the locking device III, and one end of the lock cylinder III is positioned between 2 opposite through holes III of the locking device III in a non-extrusion state; the locking plate III is provided with a through hole III, when the locking plate III is inserted into the locking block III, one end of the lock cylinder III is far away from the through hole III, and at the moment, the locking plate III, the locking lug III and the through hole III on the locking device III form a socket III; the locking pin is movably arranged in the upright post.

Furthermore, a connecting piece is arranged in the middle of the connecting rod III.

Further, the connecting rod III is fixed on the inner wall by a guide lug.

Furthermore, two ends of the connecting rod III are fixedly connected with one ends of the crank arm I and the crank arm II respectively, and the other ends of the crank arm I and the crank arm II are hinged with the connecting rod II and the connecting rod IV respectively.

Compared with the prior art, the utility model has the following advantages:

1. the shifting fork of the linkage device is driven by the locking switching turntable, and the shifting fork drives the shifting rod to realize that the connecting rod I and the connecting rod IV are simultaneously far away from or close to the socket I and the socket II; when the switch equipment is converted from an overhaul state to a running and operating state, the overhaul door, the front door and the rear door are closed, when the front door is closed, the locking pin is pressed into the socket III to realize the locking of the overhaul door, and then the locking switching turntable is rotated to insert the connecting rod I and the connecting rod IV into the socket I and the socket II respectively to realize the locking of the front door and the rear door; when the switch equipment is converted from the running state and the operating state into the maintenance state, the locking switching turntable is rotated to enable the connecting rod I and the connecting rod IV to respectively leave the socket I and the socket II to unlock the front door and the rear door, and the front door is opened to unlock the maintenance door;

2. the connecting piece arranged in the middle of the connecting rod III is utilized to increase the stress capacity of the connecting rod III.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the anti-misoperation lock in the embodiment of the present invention;

fig. 2 and 3 are isometric views of the linkage, front door latch and rear door latch connections in different orientations according to embodiments of the present invention.

FIG. 4 is a front view of a front door latch, a rear door latch, and an access door latch of an embodiment of the present invention in an open position;

FIG. 5 is a front view of a front door latch, a rear door latch, and an access door latch of an embodiment of the present invention in a closed position;

FIG. 6 is a top view of the front door latch, the rear door latch, and the access door latch of an embodiment of the present invention in a closed position;

FIG. 7 is an isometric view of an access door latch with locking according to an embodiment of the present invention;

FIG. 8 is an isometric view of an access door front door latch, rear door latch, access door latch, rear door and vertical post in an embodiment of the present invention;

the attached drawings are as follows: an isolating switch operating mechanism 1, a locking switching turntable 2, a front door lock 3, a locking plate I3-1, a locking block I3-2, a locking lug I3-2-1, a lock I3-2-2, a lock core I3-2-3, a through hole I3-2-4, a socket I3-3, a rear door lock 4, a locking plate II 4-1, a locking block II 4-2, a locking lug II 4-2-1, a lock II 4-2-2, a lock core II 4-2-3, a through hole II 4-2-4, a socket II 4-3, an access door lock 5, a locking plate III 5-1, a locking block III 5-2, a locking lug III 5-2-1, a lock III 5-2-2, a lock III 5-2-3, a lock core III 5-2-3, 5-2-4 parts of through hole III, 5-3 parts of socket III, 5-4 parts of locking pin, 5-5 parts of inclined insert, 6 parts of linkage device, 6-1 parts of driving lever, 6-2 parts of shifting fork, 6-3 parts of connecting rod I, 6-4 parts of connecting rod II, 6-5 parts of connecting rod III, 6-5-1 parts of connecting piece, 6-6 parts of connecting rod IV, 6-7 parts of crank arm I, 6-8 parts of crank arm II, 6-9 parts of connecting rod, 7 parts of guide lug, upright post 11 and back wall 12.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The front door, the rear door and the upright in the embodiment are only used for describing the position of the lock and cannot be used as a limitation to the use scene of the utility model.

As shown in fig. 1, 2 and 3, an operation mechanism of a fixed switchgear and a mechanical anti-misoperation lock of a front door and a rear door comprise a disconnecting switch operation mechanism 1 and a lock switching turntable 2 arranged on the disconnecting switch operation mechanism 1, the mechanical anti-misoperation lock further comprises a front door lock 3, a rear door lock 4, an access door lock 5 and a linkage device 6, as shown in fig. 4, 7 and 8, the front door lock 3 comprises a lock plate i 3-1 and a lock block i 3-2, the lock plate i 3-1 is arranged on the front door, the lock block i 3-2 is arranged on a vertical column 11, and the lock plate i 3-1 forms a socket i 3-3 when inserted into the lock block i 3-2; the rear door lock 4 comprises a lock plate II 4-1 and a lock block II 4-2, the lock plate II 4-1 is installed on the rear door, the lock block II 4-2 is installed on the rear wall 12, and a socket II 4-3 is formed when the lock plate II 4-1 is inserted into the lock block II 4-2; the access door lock 5 comprises a lock plate III 5-1, a lock block III 5-2, an inclined insert 5-5 and a lock pin 5-4, wherein the lock plate III 5-1 is arranged on the access door, the lock block III 5-2 is arranged on the upright post 11, the lock plate III 5-1 forms a socket III 5-3 when inserted into the lock block III 5-2, the inclined insert 5-5 is arranged on the front door, and the inclined insert 5-5 can press the lock pin 5-4 into the socket III 5-3;

as shown in fig. 2 and 3, the linkage device 6 comprises a shift lever 6-1, a shift fork 6-2, a connecting rod i 6-3, a connecting rod ii 6-4, a connecting rod iii 6-5, a connecting rod iv 6-6, a connecting rod i 6-7 and a connecting rod ii 6-8, one end of the shift fork 6-2 is fixedly connected with the locking switching turntable 2, the other end of the shift fork is connected with one end of the shift lever 6-1 in a snap-fit manner, one ends of the connecting rod i 6-3 and the connecting rod ii 6-4 are respectively connected with two ends of the connecting rod 6-9, the other end of the shift lever 6-1 is connected with the connecting rod ii 6-4, the other end of the connecting rod i 6-3 is opposite to the socket i 3-3, one end of the connecting rod iv 6-6 is opposite to the socket ii 4-3, and the other ends of the connecting rod ii 6-4 and the connecting rod iv 6-6 are respectively connected with the connecting rod ii 6-8 through the connecting rod i 6-7 and the connecting rod ii 6-8 The connecting rod III is connected with a connecting rod III 6-5, two ends of the connecting rod III 6-5 are fixedly connected with one ends of a crank arm I6-7 and a crank arm II 6-8 respectively, and the other ends of the crank arm I6-7 and the crank arm II 6-8 are hinged with a connecting rod II 6-4 and a connecting rod IV 6-6 respectively; the connecting rod III 6-5 is fixed on the inner wall, generally by welding or other fixing methods, and in the embodiment, the connecting rod III 6-5 is fixed on the inner wall by using the guide lug 7.

As shown in fig. 4, 5, 6 and 8, the locking block i 3-2 comprises a locking lug i 3-2-1, a locking device i 3-2-2 and a lock cylinder i 3-2-3, one side of the locking lug I3-2-1 is used for fixing the upright post 11, the other side is used for fixing the locking device I3-2-2, the fixed locking device I3-2-2 and the locking lug I3-2-1 are respectively provided with a through hole I3-2-4 with corresponding positions, the lock core I3-2-3 is embedded in the fastener I3-2-2 and under the non-extrusion state, one end of the lock cylinder I3-2-3 is positioned between 2 opposite through holes I3-2-4 of the fastener I3-2-2; the locking plate I3-1 is provided with a through hole I3-2-4, when the locking plate I3-1 is inserted into the locking block I3-2, one end of the lock cylinder I3-2-3 is far away from the through hole I3-2-4, and at the moment, the locking plate I3-1, the locking lug I3-2-1 and the through hole I3-2-4 on the locking device I3-2-2 form a socket I3-3.

As shown in fig. 4, 5, 6 and 8, the locking block ii 4-2 comprises a locking lug ii 4-2-1, a locking device ii 4-2-2 and a lock core ii 4-2-3, one side of the locking lug II 4-2-1 is used for fixing the rear wall 12, the other side is used for fixing the locking lug II 4-2-2, the fixed locking device II 4-2-2 and the locking lug II 4-2-1 are respectively provided with a through hole II 4-2-4 with corresponding positions, the lock core II 4-2-3 is embedded in the locking device II 4-2-2 and under the non-extrusion state, one end of the lock core II 4-2-3 is positioned between 2 opposite through holes II 4-2-4 of the locking device II 4-2-2; the locking plate II 4-1 is provided with a through hole II 4-2-4, when the locking plate II 4-1 is inserted into the locking block II 4-2, one end of the lock core II 4-2-3 is far away from the through hole II 4-2-4, and at the moment, the locking plate II 4-1, the locking lug II 4-2-1 and the through hole II 4-2-4 on the locking device II 4-2-2 form a socket II 4-3.

As shown in fig. 4, 5, 6, 7 and 8, the locking block iii 5-2 comprises a locking lug iii 5-2-1, a locking device iii 5-2-2 and a lock cylinder iii 5-2-3, one side of the locking lug III 5-2-1 is used for fixing the upright post 11, the other side is used for fixing the locking device III 5-2-2, the fixed locking device III 5-2-2 and the locking lug III 5-2-1 are respectively provided with a through hole III 5-2-4 with corresponding positions, the lock core III 5-2-3 is embedded in the locking device III 5-2-2 and in a non-compression state, one end of the lock core III 5-2-3 is positioned between 2 opposite through holes III 5-2-4 of the fastener III 5-2-2; the locking plate III 5-1 is provided with a through hole III 5-2-4, when the locking plate III 5-1 is inserted into the locking block III 5-2, one end of the lock core III 5-2-3 is far away from the through hole III 5-2-4, and at the moment, the locking plate III 5-1, the locking lug III 5-2-1 and the through hole III 5-2-4 on the locking device III 5-2-2 form a socket III 5-3; the locking pin 5-4 is movably arranged in the upright post 11.

The mechanical anti-misoperation lockout working principle of the utility model is as follows:

the handle positioned on the outer side of the access door of the manual regulation locking switching turntable 2 rotates clockwise or anticlockwise, the rotating shaft positioned on the inner side of the access door of the locking switching turntable 2 drives the shifting fork 6-2 to rotate clockwise or anticlockwise, and the shifting fork 6-2 drives the shifting rod 6-1 to move back and forth to realize that the connecting rod I6-3 and the connecting rod IV 6-6 are simultaneously far away from or close to the socket I3-3 and the socket II 4-3; when the switch equipment is converted from an overhaul state to a running and operating state, the overhaul door, the front door and the rear door are closed to form a socket III 5-3, a socket I3-3 and a socket II 4-3, when the front door is closed, the locking pin 5-4 is pressed into the socket III 5-3 to realize the locking of the overhaul door, and then the locking switching turntable 2 is rotated to insert the connecting rod I6-3 and the connecting rod IV 6-6 into the socket I3-3 and the socket II 4-3 respectively to realize the locking of the front door and the rear door; when the switch equipment is converted from the operation state to the maintenance state, the locking switching turntable 2 is rotated to enable the connecting rods I6-3 and the connecting rods IV 6-6 to respectively leave the sockets I3-3 and the sockets II 4-3 to unlock the front door and the rear door, and the front door is opened to unlock the access door.

Furthermore, as shown in fig. 1, a connecting piece 6-5-1 is arranged in the middle of the connecting rod III 6-5, so that the stress capacity of the connecting rod III 6-5 can be realized.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes and modifications can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention, and the present invention is within the scope of the claims.

Claims (7)

1. The mechanical anti-misoperation lock for the operating mechanism and the front and rear doors of the fixed switch equipment comprises an isolating switch operating mechanism (1) and a lock switching turntable (2) arranged on the isolating switch operating mechanism (1), and is characterized in that the mechanical anti-misoperation lock also comprises a front door lock (3), a rear door lock (4), an access door lock (5) and a linkage device (6), wherein the front door lock (3) comprises a lock plate I (3-1) and a lock block I (3-2), the rear door lock (4) comprises a lock plate II (4-1) and a lock block II (4-2), and the access door lock (5) comprises a lock plate III (5-1), a lock block III (5-2), an inclined plug (5-5) and a lock pin (5-4);

the locking plate I (3-1) is installed on a front door, the locking block I (3-2) is installed on the upright post (11), and a socket I (3-3) is formed when the locking plate I (3-1) is inserted into the locking block I (3-2); the locking plate II (4-1) is arranged on the rear door, the locking block II (4-2) is arranged on the rear wall (12), and a socket II (4-3) is formed when the locking plate II (4-1) is inserted into the locking block II (4-2); the locking plate III (5-1) is installed on an access door, the locking block III (5-2) is installed on an upright post (11), a socket III (5-3) is formed when the locking plate III (5-1) is inserted into the locking block III (5-2), the inclined plug (5-5) is installed on a front door, and the locking pin (5-4) can be pressed into the socket III (5-3) by the inclined plug (5-5);

the linkage device (6) comprises a shifting lever (6-1), a shifting fork (6-2), a connecting rod I (6-3), a connecting rod II (6-4), a connecting rod III (6-5), a connecting rod IV (6-6), a connecting lever I (6-7) and a connecting lever II (6-8), one end of the shifting fork (6-2) is fixedly connected with the locking switching turntable (2), the other end of the shifting lever (6-1) is connected with one end of the shifting lever in a clamping and embedding manner, one ends of the connecting rod I (6-3) and the connecting rod II (6-4) are respectively connected with two ends of a connecting rod (6-9), the other end of the shifting lever (6-1) is connected with the connecting rod II (6-4), the other end of the connecting rod I (6-3) faces the socket I (3-3), one end of the connecting rod IV (6-6) faces the socket II (4-3), the other ends of the connecting rods II (6-4) and IV (6-6) are respectively connected with the connecting rods III (6-5) through the crank arms I (6-7) and II (6-8), and the connecting rods III (6-5) are fixed on the inner wall.

2. The mechanical anti-misoperation lock of the operating mechanism and the front door and the rear door of the fixed switchgear is characterized in that the locking block I (3-2) comprises a locking lug I (3-2-1), a locking device I (3-2-2) and a lock cylinder I (3-2-3), one side of the locking lug I (3-2-1) is used for fixing the upright post (11), the other side of the locking lug I (3-2-2) is used for fixing the locking device I (3-2-2), the fixed locking device I (3-2-2) and the locking lug I (3-2-1) are respectively provided with through holes I (3-2-4) corresponding to the positions, the lock cylinder I (3-2-3) is embedded in the locking device I (3-2-2) and is in a non-extrusion state, one end of the lock cylinder I (3-2-3) is positioned between 2 opposite through holes I (3-2-4) of the fastener I (3-2-2); the locking plate I (3-1) is provided with a through hole I (3-2-4), when the locking plate I (3-1) is inserted into the locking block I (3-2), one end of the lock cylinder I (3-2-3) is far away from the through hole I (3-2-4), and at the moment, the locking plate I (3-1), the locking lug I (3-2-1) and the through hole I (3-2-4) in the locking device I (3-2-2) form a socket I (3-3).

3. The mechanical anti-misoperation lockout of an operating mechanism and front and rear doors of a fixed switch device according to claim 1 is characterized in that the lockout block II (4-2) comprises a lockout lug II (4-2-1), a lockout device II (4-2-2) and a lock cylinder II (4-2-3), one side of the lockout lug II (4-2-1) is used for fixing the rear wall (12), the other side of the lockout lug II (4-2-2) is used for fixing the lockout device II (4-2-2), the fixed lockout device II (4-2-2) and the lockout lug II (4-2-1) are respectively provided with through holes II (4-2-4) corresponding in position, the lock cylinder II (4-2-3) is embedded in the lockout device II (4-2-2) and in a non-extrusion state, one end of the lock core II (4-2-3) is positioned between 2 opposite through holes II (4-2-4) of the locking device II (4-2-2); the locking plate II (4-1) is provided with a through hole II (4-2-4), when the locking plate II (4-1) is inserted into the locking block II (4-2), one end of the lock core II (4-2-3) is far away from the through hole II (4-2-4), and at the moment, the locking plate II (4-1), the locking lug II (4-2-1) and the through hole II (4-2-4) in the locking device II (4-2-2) form a socket II (4-3).

4. The mechanical anti-misoperation lock of the operating mechanism and the front door and the rear door of the fixed switchgear is characterized in that the locking block III (5-2) comprises a locking lug III (5-2-1), a locking lug III (5-2-2) and a lock cylinder III (5-2-3), one side of the locking lug III (5-2-1) is used on the fixed upright post (11), the other side of the locking lug III is used for fixing the locking lug III (5-2-2), the fixed locking lug III (5-2-2) and the locking lug III (5-2-1) are respectively provided with through holes III (5-2-4) corresponding to the positions, the lock cylinder III (5-2-3) is embedded in the locking lug III (5-2-2) and is in a non-extrusion state, one end of the lock core III (5-2-3) is positioned between 2 opposite through holes III (5-2-4) of the locking device III (5-2-2); the locking plate III (5-1) is provided with a through hole III (5-2-4), when the locking plate III (5-1) is inserted into the locking block III (5-2), one end of the lock core III (5-2-3) is far away from the through hole III (5-2-4), and at the moment, the locking plate III (5-1), the locking lug III (5-2-1) and the through hole III (5-2-4) on the locking device III (5-2-2) form a socket III (5-3); the locking pin (5-4) is movably arranged in the upright post (11).

5. A mechanical anti-mislocking mechanism of an operating mechanism and front and rear doors of a fixed switchgear according to claim 1, characterized in that a link (6-5-1) is provided in the middle of the link iii (6-5).

6. Mechanical anti-mislocking of an operating mechanism and front and rear doors of a fixed switchgear according to claim 5, characterized in that the connecting rod III (6-5) is fixed on the inner wall by means of a guiding lug (7).

7. The mechanical anti-misoperation lock of the operating mechanism of the fixed switch equipment and the front door and the rear door is characterized in that two ends of the connecting rod III (6-5) are fixedly connected with one ends of the connecting levers I (6-7) and II (6-8), and the other ends of the connecting levers I (6-7) and II (6-8) are hinged with the connecting rods II (6-4) and IV (6-6).

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