Grounding program lock of spring operating mechanism

Abstract

The utility model relates to a grounding program lock of a spring operating mechanism, which comprises a support, a program lock, a first connecting plate, a second connecting plate, a support plate and an interlocking baffle plate, one end of the interlocking baffle plate is provided with a separation blade part matched with a grounding operating shaft, and the separation blade part moves along with the interlocking baffle plate and abuts against one side of the grounding operating shaft. One end of the second connecting plate is provided with a screw rod, the other end of the interlocking baffle plate is provided with a sliding hole matched with the screw rod, the screw rod is inserted into the sliding hole in a penetrating manner, and the screw rod moves along with the second connecting plate and slides in the sliding hole of the interlocking baffle plate in a reciprocating manner, so that the interlocking baffle plate is in linkage fit with the screw rod; the grounding operation shaft is provided with a limiting cam matched with the screw rod, and when the grounding operation shaft rotates to a switching-on position, the limiting cam acts along with the grounding operation shaft and abuts against the screw rod. The utility model has the advantages of simple structure, stable and reliable performance, reliable interlocking, high safety and convenient operation.

Description

Technical Field

[0001] The utility model relates to a spring operating mechanism, in particular to a grounding program lock of the spring operating mechanism. Background Art

[0002] The spring operating mechanism is a supporting equipment suitable for the opening and closing operations of high-voltage load switch-fuse combination electrical appliances. The mechanism uses a flat scroll spring to store energy to control the opening and closing actions of the composite switch. The working positions include opening, closing, and grounding. It also has a five-protection interlocking function, and has high reliability when used in combination with a circuit breaker mechanism. The program lock, also known as the anti-misoperation program lock, is a mechanical lock for high-voltage switchgear. This lock can be used to force operators to operate electrical equipment in strict accordance with the prescribed safety operating procedures, avoid misoperation of electrical equipment, and meet the five-protection requirements put forward by the power supply department. The existing grounding program lock on the spring operating mechanism has a relatively complex structural design, and has the defects of unreliable interlocking, inconvenient operation, and low safety.

[0003] In order to prevent the grounding switch from closing with power on, a grounding program lock is usually installed on the existing spring operating mechanism. The interlocking principle of the grounding program lock is: when the program lock completes the safe handover, the program lock is in a locked state, and the lock pin of the program lock blocks the grounding operating shaft, making the grounding switch unable to operate, so as to achieve the purpose of safe electricity use. The existing grounding program lock has a complex structural design, and has the defects of unreliable interlocking, inconvenient operation, and low safety. Summary of the invention

[0004] The utility model aims to overcome the defects of the prior art and provide a grounding program lock with a spring operating mechanism which has a simple structure, stable and reliable performance, reliable interlocking, high safety and convenient operation.

[0005] To achieve the above-mentioned purpose, the utility model adopts a grounding program lock of a spring operating mechanism, comprising a bracket arranged on a mechanism frame, a program lock arranged on the bracket, a first connecting plate linked with a locking rod of the program lock, a second connecting plate rotatably arranged on the bracket and linked with the first connecting plate, a supporting plate arranged on the mechanism frame, and an interlocking baffle rotatably arranged on the supporting plate and matched with a grounding operating shaft, wherein one end of the interlocking baffle has a baffle portion matched with the grounding operating shaft, the baffle portion moves with the interlocking baffle and abuts against one side of the grounding operating shaft, a screw is arranged on one end of the second connecting plate, a sliding hole matched with the screw is arranged on the other end of the interlocking baffle, the screw is inserted in the sliding hole, the screw moves with the second connecting plate and reciprocates in the sliding hole of the interlocking baffle, and a linkage cooperation between the interlocking baffle and the screw is formed, a limiting cam matched with the screw is arranged on the grounding operating shaft, and when the grounding operating shaft rotates to the closing position, the limiting cam moves with the grounding operating shaft and abuts against the screw.

[0006] The beneficial effect of the above structure is that a grounding program lock matched with the grounding operating shaft is arranged on the mechanism frame, and the grounding program lock and the grounding operating shaft can realize reliable interlocking, which is beneficial to improve the safety performance of the spring operating mechanism. When the grounding switch needs to be operated, the operator opens the program lock with a key, and the locking rod of the program lock drives the interlocking baffle to move through the first connecting plate and the second connecting plate, and the baffle portion of the interlocking baffle is separated from the grounding operating shaft, and the interlocking baffle is separated from the grounding operating shaft, so that the operator can operate the grounding operating shaft. When the grounding operating shaft rotates to the closing position (grounding closing), the limit cam moves with the grounding operating shaft and contacts the screw, so that the limit cam can limit the movement of the locking rod of the program lock through the second connecting plate and the second connecting plate, and the key of the program lock cannot be pulled out. When the grounding operation shaft rotates to the opening position (grounding opening), the operator can turn the key, and the locking rod of the program lock drives the interlocking baffle to move through the first connecting plate and the second connecting plate. The baffle part of the interlocking baffle contacts the grounding operation shaft, and the grounding operation cannot be operated. The operator can pull out the key to realize the interlocking of the program lock and the grounding operation shaft. Therefore, the grounding program lock of the spring operating mechanism has the advantages of simple structure, stable and reliable performance, reliable interlocking, high safety, and convenient operation.

[0007] In particular, the baffle is provided with an arc groove matched with the grounding operation shaft, and the arc groove moves with the baffle and fits on the outer peripheral wall of the grounding operation shaft. The arc groove of the baffle can reliably fit on the outer peripheral wall of the grounding operation shaft, thereby facilitating improving the interlocking reliability of the interlocking baffle and the grounding operation shaft.

[0008] In particular, a connection hole is provided on one end of the first connecting plate, the locking rod of the program lock is connected in the connection hole, and the linkage cooperation between the first connecting plate and the locking rod is formed, and a screw connected to the first connecting plate is provided on the other end of the second connecting plate. The first connecting plate is connected to the locking rod of the program lock, so that the assembly of the first connecting plate and the program lock is convenient, and the transmission between the first connecting plate and the locking rod of the program lock can be ensured to be more reliable.

[0009] In particular, a positioning screw is provided on the middle of the second connecting plate, a positioning hole is provided on the bracket, and the positioning screw is rotatably arranged in the positioning hole, and constitutes a rotational connection cooperation between the positioning screw and the bracket. The second connecting plate is connected to the bracket by the positioning screw, thereby facilitating the assembly of the second connecting plate and the bracket, and ensuring that the second connecting plate can be reliably rotated on the bracket.

[0010] In particular, a positioning bolt is provided on the middle of the interlocking baffle, a through hole matching the positioning bolt is provided on the support plate, the positioning bolt is connected in the through hole, and a rotational connection between the positioning bolt and the support plate is formed. The interlocking baffle is rotatably arranged on the support plate by the positioning bolt, thereby facilitating the assembly of the interlocking baffle and the support plate, and ensuring that the interlocking baffle can reliably move on the support plate, which is beneficial to improving the working reliability of the grounding program lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a stereogram of an embodiment of the utility model.

[0012] Figure 2 It is the front view of the embodiment of the utility model.

[0013] Figure 3 This is an exploded view of an embodiment of the utility model. DETAILED DESCRIPTION

[0014] like Figures 1 to 3As shown, the embodiment of the utility model is a grounding program lock of a spring operating mechanism, comprising a bracket 11 arranged on a mechanism frame 10, a program lock 12 arranged on the bracket 11, a first connecting plate 13 cooperating with a lock rod 121 of the program lock 12, a second connecting plate 14 rotatably arranged on the bracket 11 and cooperating with the first connecting plate 13, a support plate 15 arranged on the mechanism frame 10, and an interlocking baffle 17 rotatably arranged on the support plate 15 and cooperating with a grounding operating shaft 16, wherein one end of the interlocking baffle 17 has a baffle portion 171 cooperating with the grounding operating shaft 16, and the baffle portion 171 moves with the interlocking baffle 17 and abuts against the grounding operating shaft On one side of the second connecting plate 16, a screw 141 is provided on one end of the second connecting plate 14, and a sliding hole 172 matching with the screw 141 is provided on the other end of the interlocking baffle 17. The screw 141 is inserted into the sliding hole 172. The screw 141 moves with the second connecting plate 14 and slides back and forth in the sliding hole 172 of the interlocking baffle 17, and forms a linkage cooperation between the interlocking baffle 17 and the screw 141. The grounding operation shaft 16 is provided with a limit cam 161 matching with the screw 141. When the grounding operation shaft 16 rotates to the closing position, the limit cam 161 moves with the grounding operation shaft 16 and abuts against the screw 141. The baffle portion 171 is provided with an arc groove 1711 matching with the grounding operation shaft 16. The arc groove 1711 moves with the baffle portion 171 and fits on the outer peripheral wall of the grounding operation shaft 16. The arc-shaped groove of the baffle portion can be reliably fitted on the outer peripheral wall of the grounding operating shaft, thereby facilitating improving the interlocking reliability of the interlocking baffle and the grounding operating shaft.

[0015] like Figure 1 , 3As shown, a connecting hole 131 is provided on one end of the first connecting plate 13, and the locking rod 121 of the program lock 12 is connected in the connecting hole 131, and the linkage cooperation between the first connecting plate 13 and the locking rod 121 is formed, and a screw 142 connected to the first connecting plate 13 is provided on the other end of the second connecting plate 14. The first connecting plate is connected to the locking rod of the program lock, so as to facilitate the assembly of the first connecting plate and the program lock, and to ensure that the transmission of the first connecting plate and the locking rod of the program lock is more reliable. A positioning screw 143 is provided on the middle part of the second connecting plate 14, and a positioning hole 111 is provided on the bracket 11. The positioning screw 143 is rotatably set in the positioning hole 111, and the rotational connection cooperation between the positioning screw 143 and the bracket 11 is formed. The second connecting plate is connected to the bracket through the positioning screw, so as to facilitate the assembly of the second connecting plate and the bracket, and to ensure that the second connecting plate can be reliably rotated on the bracket. A positioning bolt 173 is provided on the middle of the interlocking baffle 17, and a through hole 151 matching with the positioning bolt 173 is provided on the support plate 15. The positioning bolt 173 is connected in the through hole 151, and forms a rotational connection and matching between the positioning bolt 173 and the support plate 15. The interlocking baffle is rotatably arranged on the support plate by the positioning bolt, so as to facilitate the assembly of the interlocking baffle and the support plate, and ensure that the interlocking baffle can reliably move on the support plate, which is conducive to improving the working reliability of the grounding program lock.

[0016] A grounding program lock matched with the grounding operating shaft is arranged on the mechanism frame, and the grounding program lock and the grounding operating shaft can realize reliable interlocking, which is beneficial to improve the safety performance of the spring operating mechanism. When the grounding switch needs to be operated, the operator opens the program lock with a key, and the locking rod of the program lock drives the interlocking baffle to move through the first connecting plate and the second connecting plate, and the baffle part of the interlocking baffle is separated from the grounding operating shaft, and the interlocking baffle is separated from the grounding operating shaft, so that the operator can operate the grounding operating shaft. When the grounding operating shaft rotates to the closing position (grounding closing), the limit cam moves with the grounding operating shaft and contacts the screw, so that the limit cam can limit the movement of the locking rod of the program lock through the second connecting plate and the second connecting plate, and the key of the program lock cannot be pulled out. When the grounding operation shaft rotates to the opening position (grounding opening), the operator can turn the key, and the locking rod of the program lock drives the interlocking baffle to move through the first connecting plate and the second connecting plate. The baffle part of the interlocking baffle contacts the grounding operation shaft, and the grounding operation cannot be operated. The operator can pull out the key to realize the interlocking of the program lock and the grounding operation shaft. Therefore, the grounding program lock of the spring operating mechanism has the advantages of simple structure, stable and reliable performance, reliable interlocking, high safety, and convenient operation.

Claims

1. A grounding program lock with a spring operating mechanism, characterized in that: The invention comprises a bracket arranged on a mechanism frame, a program lock arranged on the bracket, a first connecting plate cooperating with a locking rod of the program lock, a second connecting plate rotatably arranged on the bracket and cooperating with the first connecting plate, a supporting plate arranged on the mechanism frame, an interlocking baffle rotatably arranged on the supporting plate and cooperating with a grounding operating shaft, one end of the interlocking baffle has a baffle portion cooperating with the grounding operating shaft, the baffle portion moves with the interlocking baffle and abuts against one side of the grounding operating shaft, a screw is arranged on one end of the second connecting plate, a sliding hole cooperating with the screw is arranged on the other end of the interlocking baffle, the screw is inserted in the sliding hole, the screw moves with the second connecting plate and slides back and forth in the sliding hole of the interlocking baffle, and a linkage cooperation between the interlocking baffle and the screw is formed, a limiting cam cooperating with the screw is arranged on the grounding operating shaft, and when the grounding operating shaft rotates to the closing position, the limiting cam moves with the grounding operating shaft and abuts against the screw.

2. The grounding program lock of the spring operating mechanism according to claim 1, characterized in that: The baffle portion is provided with an arc-shaped groove matched with the grounding operation shaft, and the arc-shaped groove moves with the baffle portion and fits on the outer peripheral wall of the grounding operation shaft.

3. The grounding program lock of the spring operating mechanism according to claim 1, characterized in that: A connecting hole is provided on one end of the first connecting plate, and the locking rod of the program lock is connected in the connecting hole to form a linkage cooperation between the first connecting plate and the locking rod. A screw connected to the first connecting plate is provided on the other end of the second connecting plate.

4. The grounding program lock of the spring operating mechanism according to claim 1 or 2, characterized in that: A positioning screw is arranged on the middle part of the second connecting plate, a positioning hole is arranged on the bracket, and the positioning screw is rotatably arranged in the positioning hole to form a rotational connection cooperation between the positioning screw and the bracket.

5. The grounding program lock of the spring operating mechanism according to claim 1 or 2, characterized in that: A positioning bolt is arranged on the middle part of the interlocking baffle, a through hole matched with the positioning bolt is arranged on the supporting plate, the positioning bolt is connected in the through hole, and constitutes a rotational connection cooperation between the positioning bolt and the supporting plate.

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