CN212934472U

CN212934472U - Vacuum circuit breaker program lock

Info

Publication number: CN212934472U
Application number: CN202022002366.6U
Authority: CN
Inventors: 徐善根; 徐孟军; 廖丽雅
Original assignee: Shijiazhuang Diya Electric Technology Co ltd
Current assignee: Shijiazhuang Diya Electric Technology Co ltd
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2021-04-09
Anticipated expiration: 2030-09-14

Abstract

The utility model discloses a vacuum circuit breaker program lock, which comprises a cabinet body and a program lock, wherein a gear mechanism is arranged inside the cabinet body; the gear mechanism comprises a first gear disc and a second gear disc, the first gear disc and the second gear disc are coaxially arranged, and the diameter of the first gear disc is smaller than that of the second gear disc; a first clamping rack is arranged on one vertical side of the first gear disc, a second clamping rack is arranged on one side, away from the first clamping rack, of the second gear disc, and a limiting rod is fixedly connected to the bottom end of the second clamping rack. The utility model discloses in, because only a procedure lock key is used for controlling two fixed vacuum circuit breaker main parts on main, the confession inlet wire part of being equipped with, and the procedure lock key is blocked by limit structure under the unblock state and can't extract, can guarantee during consequently the use that two fixed vacuum circuit breaker main parts unblock simultaneously the condition can not appear, realize main, the mechanical interlocking who supplies the inlet wire circuit breaker ready.

Description

Vacuum circuit breaker program lock

Technical Field

The utility model relates to a circuit breaker procedure lock technical field especially relates to a vacuum circuit breaker procedure lock.

Background

The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition within a prescribed time. The circuit breakers are divided into a high-voltage circuit breaker and a low-voltage circuit breaker according to the application range of the circuit breakers, the high-voltage and low-voltage boundary line is divided more fuzzinly, and the circuit breakers above 3kV are generally called high-voltage electrical appliances; the circuit breaker can be used for distributing electric energy, starting an asynchronous motor infrequently, protecting a power supply circuit, the motor and the like, and automatically cutting off a circuit when faults such as serious overload, short circuit, undervoltage and the like occur, and the function of the circuit breaker is equivalent to the combination of a fuse type switch, an over-under-heat relay and the like.

The locking device of the existing circuit breaker is arranged on a left closing plate of the circuit breaker, and when the main incoming line circuit breaker is powered off, the locking device of the main incoming line circuit breaker needs to be locked, and then the standby incoming line circuit breaker needs to be unlocked; this process need can reach and supply the inlet wire power supply after moving withdrawable circuit breaker to the work position from experimental position, and the operation is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a vacuum circuit breaker procedure lock has solved the inconvenient problem of circuit breaker procedure lock operation among the prior art.

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

a program lock of a vacuum circuit breaker comprises a cabinet body and a program lock, wherein the program lock is installed above the cabinet body, the back of the cabinet body is rotatably connected with a closing half shaft, and a gear mechanism is arranged above the closing half shaft;

the gear mechanism comprises a first gear disc and a second gear disc, the first gear disc and the second gear disc are coaxially arranged, and the diameter of the first gear disc is smaller than that of the second gear disc;

a first clamping rack is arranged on one vertical side of the first gear disc, a second clamping rack is arranged on one side, away from the first clamping rack, of the second gear disc, and a limiting rod is fixedly connected to the bottom end of the second clamping rack.

Preferably, the program lock is internally embedded with a lock rod in a sliding manner, and the lock rod protrudes out of the program lock.

Preferably, the vertical position of the first clamping rack corresponds to the locking rod, the top end of the first clamping rack is attached to the locking rod, a fixing plate fixedly connected with the cabinet body is arranged on the outer side of the first clamping rack, and the fixing plate is connected with the first clamping rack in a sliding mode.

Preferably, the outside cover of gag lever post is equipped with the sliding sleeve, and the sliding sleeve passes through fixed connection between connecting rod and the cabinet body.

Preferably, one end of the closing half shaft, which is close to the limiting rod, is provided with a limiting hole, the limiting hole is connected with the limiting rod in a sliding embedding manner, and the limiting hole is in clearance fit with the limiting rod.

Preferably, an extrusion spring fixedly connected with the cabinet body is arranged below the first clamping rack, and the axial direction of the extrusion spring and the first clamping rack are located on the same vertical line.

The utility model discloses possess following beneficial effect at least:

only one program lock key is used for controlling the two fixed vacuum circuit breaker main bodies on the main wire supply part and the standby wire supply part, and the program lock key is blocked by the limiting structure and cannot be pulled out in an unlocking state, so that the situation that the two fixed vacuum circuit breaker main bodies are unlocked simultaneously can be avoided in use; therefore, the mechanical interlocking of the main and standby supply inlet line circuit breakers can be realized; because the locking device is fixedly arranged on the main body of the fixed vacuum circuit breaker, when the vacuum circuit breaker is unlocked or locked, the locking and unlocking operation can be completed only by using a program lock key to respectively lock and unlock two program locks, the operation is simple and quick, the purpose of rapidly transmitting power is achieved, and the ejector rod can automatically reset under the action of the pressure spring, so that the operation is simpler and more convenient.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.

Fig. 1 shows a front view provided in accordance with an embodiment of the present invention;

fig. 2 shows a side view provided in accordance with an embodiment of the present invention;

fig. 3 shows an enlarged view of a point a provided according to an embodiment of the present invention.

In the figure: 1. a cabinet body; 2. a program lock; 3. a lock lever; 4. a switching-on half shaft; 5. a limiting rod; 6. a first rack bar; 7. a fixing plate; 8. a first gear plate; 9. a second rack bar; 10. a sliding sleeve; 11. a limiting hole; 12. a compression spring; 13. a second gear wheel disk.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-3, a program lock of a vacuum circuit breaker comprises a cabinet body 1 and a program lock 2, wherein the program lock 2 is installed above the cabinet body 1, the back of the cabinet body 1 is rotatably connected with a closing half shaft 4, and a gear mechanism is arranged above the closing half shaft 4;

the gear mechanism comprises a first gear disc 8 and a second gear disc 13, the first gear disc 8 and the second gear disc 13 are coaxially arranged, and the diameter of the first gear disc 8 is smaller than that of the second gear disc 13;

the vertical one side of first toothed disc 8 is provided with first calorie of rack 6, and the one side that first calorie of rack 6 was kept away from to second toothed disc 13 is provided with second calorie of rack 9 to the bottom fixedly connected with gag lever post 5 of second calorie of rack 9 meshes the transmission between first calorie of rack 6 and the first toothed disc 8, meshes the transmission between second calorie of rack 9 and the second toothed disc 13.

Specifically, as shown in fig. 1-3, a lock rod 3 is slidably embedded in the program lock 2, the lock rod 3 protrudes out of the program lock 2, a vertical position of a first rack bar 6 corresponds to the lock rod 3, the top end of the first rack bar 6 is attached to the lock rod 3, a fixing plate 7 fixedly connected with the cabinet body 1 is arranged on the outer side of the first rack bar 6, the fixing plate 7 is slidably connected with the first rack bar 6, and the fixing plate 7 is used for limiting the vertical direction of the first rack bar 6 and always keeping the vertical direction of the first rack bar 6.

Specifically, as shown in fig. 1-3, a sliding sleeve 10 is sleeved outside the limiting rod 5, the sliding sleeve 10 is fixedly connected with the cabinet body 1 through a connecting rod, a limiting hole 11 is formed in one end, close to the limiting rod 5, of the closing half shaft 4, the limiting hole 11 penetrates through the closing half shaft 4, the limiting hole 11 is connected with the limiting rod 5 in a sliding and embedding manner, and the limiting hole 11 is in clearance fit with the limiting rod 5.

Specifically, as shown in fig. 1 and 3, an extrusion spring 12 fixedly connected with the cabinet body 1 is arranged below the first rack clamping bar 6, the axial direction of the extrusion spring 12 and the first rack clamping bar 6 are located on the same vertical line, and the top end of the extrusion spring 12 is attached to but not fixed to the first rack clamping bar 6.

The working principle is as follows: the lock body 2 is locked by a key rotation program, so that the lock rod 3 in the lock body is linked to move downwards, the lock rod 3 pushes the first clamping rack 6 to move downwards, when the first clamping rack 6 moves downwards, the first clamping rack and the first gear disc 8 are in meshing transmission, the first gear disc 8 is enabled to rotate, and meanwhile, the second gear disc 13 which is coaxially arranged is linked to rotate, because the first gear disc 8 and the second gear disc 13 are coaxially arranged, and the diameter of the second gear disc 13 is larger than that of the first gear disc 8, under the condition of the same angular velocity, the linear velocity of the second gear disc 13 is larger than that of the first gear disc 8, so that the downward movement distance of the second clamping rack 9 is larger than that of the first clamping rack 6, and further, the second clamping rack 9 can push the limiting rod 5 to move into a limiting hole 11 of the closing half shaft 4, and the closing half shaft is limited, so that the closing operation can not be carried out, thereby realizing the locking function; after the program lock key 4 is pulled out and inserted into the program lock of the spare power supply incoming line part to rotate in the opposite direction, the program lock stop pin 3.1 which is originally in a locking state retracts, the first clamping rack 6 resets under the action of the extrusion spring 12, the limiting rod 5 loses the limiting effect on the closing half shaft 4 through the transmission of the gear mechanism, at the moment, the main body of the vacuum circuit breaker can complete closing operation, the vacuum circuit breaker is in an unlocking state, and meanwhile, the program lock key cannot be pulled out, so that the interlocking between the main and spare power supply incoming line circuit breakers is realized.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A program lock of a vacuum circuit breaker comprises a cabinet body (1) and a program lock (2), wherein the program lock (2) is installed above the cabinet body (1), and is characterized in that a closing half shaft (4) is rotatably connected to the back of the cabinet body (1), and a gear mechanism is arranged above the closing half shaft (4);

the gear mechanism comprises a first gear disc (8) and a second gear disc (13), the first gear disc (8) and the second gear disc (13) are coaxially arranged, and the diameter of the first gear disc (8) is smaller than that of the second gear disc (13);

the vertical side of the first gear disc (8) is provided with a first clamping rack (6), one side, away from the first clamping rack (6), of the second gear disc (13) is provided with a second clamping rack (9), and the bottom end of the second clamping rack (9) is fixedly connected with a limiting rod (5).

2. Procedure lock for vacuum circuit breaker according to claim 1, characterized in that inside the procedure lock (2) is slidingly embedded a locking bar (3) and the locking bar (3) protrudes the procedure lock (2) setup.

3. The vacuum circuit breaker program lock according to claim 2, characterized in that the vertical position of the first rack (6) corresponds to the lock rod (3), the top end of the first rack (6) is attached to the lock rod (3), a fixing plate (7) fixedly connected to the cabinet body (1) is arranged on the outer side of the first rack (6), and the fixing plate (7) is slidably connected to the first rack (6).

4. The vacuum circuit breaker program lock according to claim 1, characterized in that a sliding sleeve (10) is sleeved outside the limiting rod (5), and the sliding sleeve (10) is fixedly connected with the cabinet body (1) through a connecting rod.

5. The vacuum circuit breaker procedure lock of claim 1, characterized in that a limiting hole (11) is opened at one end of the closing half shaft (4) close to the limiting rod (5), the limiting hole (11) is connected with the limiting rod (5) in a sliding and embedding manner, and the limiting hole (11) is in clearance fit with the limiting rod (5).

6. The vacuum circuit breaker program lock according to claim 1, characterized in that an extrusion spring (12) fixedly connected with the cabinet body (1) is arranged below the first rack (6), and the axial direction of the extrusion spring (12) and the first rack (6) are on the same vertical line.