Operating mechanism of isolating switch

Abstract

The utility model relates to an operating mechanism of an isolating switch. Comprising a shell, a manual operation shaft rotationally arranged on the shell, a driving shaft in linkage fit with the manual operation shaft, an energy storage torsion spring arranged between the driving shaft and the shell, a pushing plate in linkage fit with the driving shaft and used for driving a contact system to execute opening and closing actions, a microswitch and a pushing frame arranged on the shell and in linkage fit with the pushing plate. The push frame acts along with the push plate and triggers the microswitch to achieve connection or disconnection of the microswitch, the manual operation shaft is provided with a stirring groove matched with the drive shaft, and the drive shaft is clamped in the stirring groove. The utility model has the advantages of simple structure, stable and reliable performance, and fast opening and closing speed.

Description

Technical Field

[0001] The utility model relates to an isolating switch, in particular to an operating mechanism of the isolating switch. Background Art

[0002] Isolating switches are devices that isolate power-off parts from live parts and create an obvious disconnection point to isolate faulty equipment or perform power outage maintenance. When electrical equipment is shut down for maintenance, the equipment to be repaired is isolated from the power supply to form an obvious disconnection point to avoid safety accidents. Isolating switches are widely used in power distribution systems and automation systems in construction, electricity, petrochemicals and other industries.

[0003] The isolating switch includes a housing, an operating mechanism, and a contact system. The operating mechanism of the existing rotary isolating switch has a relatively complex structural design. When the operating handle is turned, the operating handle directly drives the moving contact mechanism to rotate. In actual use, there are defects such as inadequate opening and closing and slow opening and closing speed. Summary of the invention

[0004] The utility model aims to overcome the defects of the prior art and provide an operating mechanism for an isolating switch with simple structure, stable and reliable performance and fast opening and closing speed.

[0005] To achieve the above-mentioned purpose, the utility model adopts an operating mechanism of an isolating switch, including a shell, a manual operating shaft rotatably arranged on the shell, a driving shaft linked with the manual operating shaft, an energy storage torsion spring arranged between the driving shaft and the shell, a push plate linked with the driving shaft and used to drive the contact system to perform opening and closing actions, a micro switch, and a push frame arranged on the shell and linked with the pushing plate. The pushing frame moves with the pushing plate and triggers the micro switch to realize the connection or disconnection of the micro switch. The manual operating shaft is provided with a toggle groove matched with the driving shaft, and the driving shaft is engaged in the toggle groove.

[0006] The beneficial effect of the above structure is that the operating mechanism adopts an energy storage structure design. During operation, the manual operating shaft drives the push plate to move through the drive shaft. The drive shaft can realize the energy storage and release of the energy storage torsion spring. The energy storage torsion spring can accelerate the movement of the drive shaft. The drive shaft drives the push plate to move. The push plate can drive the contact system to accelerate the opening and closing action, and the opening and closing speed is faster. The push plate triggers the micro switch through the push frame. The micro switch can monitor the position of the push plate, thereby realizing remote monitoring of the working state of the operating mechanism of the isolating switch, which is beneficial to improving the working reliability of the operating mechanism of the isolating switch. Therefore, the operating mechanism of the isolating switch has the advantages of simple structure, stable and reliable performance, and fast opening and closing speed.

[0007] In particular, one end of the manual operating shaft has a manual operating portion exposed outside the housing, the manual operating portion has an operating hole, and the other end of the manual operating shaft has a rotating shaft portion, which is rotatably arranged in a positioning groove in the housing. The manual operating shaft is rotatably arranged in the positioning groove through the main shaft portion, and the assembly of the manual operating shaft and the housing is more convenient, thereby ensuring that the manual operating shaft can rotate reliably.

[0008] In particular, the manual operation part is provided with an indicating protrusion, and the housing is provided with an indicating mark matched with the indicating protrusion. The indicating protrusion can realize the working state indication of the operating mechanism, which is convenient for users to operate and more convenient.

[0009] In particular, a guide hole is provided on the housing corresponding to the push frame, one end of the push frame has a frame body slidably arranged in the guide hole and matched with the push plate, and the other end of the push frame has a push sheet exposed outside the housing and used to trigger the micro switch. The push frame is slidably arranged in the guide hole of the housing through the frame body, thereby ensuring that the push frame can reliably move on the housing, which is conducive to improving the working reliability of the operating mechanism of the isolation switch.

[0010] In particular, the two ends of the push plate have two vertically bent toggle pieces, one end of the drive shaft extends between the two toggle pieces, the drive shaft moves with the manual operating shaft and drives the toggle pieces, and forms a linkage cooperation between the toggle pieces and the drive shaft. The drive shaft toggle the push plate through the toggle pieces, thereby ensuring that the transmission between the push plate and the drive shaft is more reliable.

[0011] In particular, a push rod is provided on the push plate in linkage with the two corresponding toggle plates, one end of which is engaged with the movable contact frame of the contact system, and forms a linkage cooperation between the movable contact frame and the push rod. The push plate drives the movable contact frame of the contact system through the push rod, thereby ensuring that the push plate can reliably drive the contact system to perform the opening and closing action, which is conducive to improving the working reliability of the operating mechanism of the disconnector.

[0012] In particular, the push plate is provided with a snap-fit ​​hole matched with the push rod, and the other end of the push rod has a snap-fit ​​protrusion matched with the snap-fit ​​hole, and the snap-fit ​​protrusion is snapped into the snap-fit ​​hole to form a snap-fit ​​between the push rod and the push plate. The push plate and the push rod are assembled in a snap-fit ​​manner, thereby facilitating the assembly of the push plate and the push rod, and ensuring that the transmission between the push rod and the push plate is more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the isolating switch according to an embodiment of the utility model.

[0014] Figure 2 This is an exploded view of the isolating switch according to an embodiment of the utility model.

[0015] Figure 3 It is a cross-sectional view of the isolating switch according to an embodiment of the utility model.

[0016] Figure 4 It is a stereogram of an embodiment of the utility model. DETAILED DESCRIPTION

[0017] like Figures 1 to 4 As shown, an embodiment of the utility model is an operating mechanism of an isolating switch, comprising a housing 10, a manual operating shaft 11 rotatably arranged on the housing 10, a driving shaft 12 linked with the manual operating shaft 11, an energy storage torsion spring 13 arranged between the driving shaft 12 and the housing 10, a pushing plate 14 linked with the driving shaft 12 and used to drive a contact system 20 to perform opening and closing actions, a micro switch 15, and a pushing frame 16 arranged on the housing 10 and linked with the pushing plate 14. The pushing frame 16 moves with the pushing plate 14 and triggers the micro switch 15 to realize the connection or disconnection of the micro switch 15. The manual operating shaft 11 is provided with a toggle groove 111 matched with the driving shaft 12, and the driving shaft 12 is engaged in the toggle groove 111.

[0018] like Figure 1 , 2 As shown in FIG. 4 , one end of the manual operating shaft 11 has a manual operating portion 112 exposed outside the housing 10, and the manual operating portion 112 has an operating hole 113. The other end of the manual operating shaft 11 has a rotating shaft portion 114, and the rotating shaft portion 114 is rotatably arranged in a positioning groove 101 in the housing 10. The manual operating shaft is rotatably arranged in the positioning groove through the main shaft portion, and the assembly of the manual operating shaft and the housing is more convenient, thereby ensuring that the manual operating shaft can rotate reliably. The manual operating portion 112 is provided with an indicating protrusion 115, and the housing 10 is provided with an indicating mark 102 that matches the indicating protrusion 115. The indicating protrusion can realize the working status indication of the operating mechanism, which is convenient for users to operate and more convenient.

[0019] like Figure 2 , 3As shown, a guide hole 103 is provided on the housing 10 corresponding to the push frame 16, one end of the push frame 16 has a frame 161 which is slidably arranged in the guide hole 103 and matched with the push plate 14, and the other end of the push frame 16 has a push piece 162 which is exposed outside the housing 10 and used to trigger the micro switch 15. The push frame is slidably arranged in the guide hole of the housing through the frame, so that the push frame can be reliably moved on the housing, which is conducive to improving the working reliability of the operating mechanism of the isolating switch. Two vertically bent toggle pieces 141 are provided at both ends of the push plate 14, one end of the drive shaft 12 extends between the two toggle pieces 141, the drive shaft 12 moves with the manual operating shaft 11 and drives the toggle piece 141, and forms a linkage cooperation between the toggle piece 141 and the drive shaft 12. The drive shaft toggles the push plate through the toggle piece, so that the transmission of the push plate and the drive shaft can be more reliable. A push rod 17 is provided on the push plate 14 in linkage with the two corresponding toggling pieces 141. One end of the push rod 17 is engaged with the movable contact frame 21 of the contact system 20, and forms a linkage cooperation between the movable contact frame 21 and the push rod 17. The push plate drives the movable contact frame of the contact system through the push rod, so that the push plate can reliably drive the contact system to perform the opening and closing action, which is conducive to improving the working reliability of the operating mechanism of the disconnector. The push plate 14 is provided with a clamping hole 142 that cooperates with the push rod 17. The other end of the push rod 17 has a clamping protrusion 171 that cooperates with the clamping hole 142. The clamping protrusion 171 is engaged in the clamping hole 142, and forms a clamping cooperation between the push rod 17 and the push plate 14. The push plate and the push rod are assembled in a clamping cooperation manner, which is convenient for the assembly of the push plate and the push rod, and can ensure that the transmission of the push rod and the push plate is more reliable.

[0020] The operating mechanism adopts an energy storage structure design. During operation, the manual operating shaft drives the push plate to move through the drive shaft. The drive shaft can realize the energy storage and release of the energy storage torsion spring. The energy storage torsion spring can accelerate the movement of the drive shaft. The drive shaft drives the push plate to move. The push plate can drive the contact system to accelerate the opening and closing action, and the opening and closing speed is faster. The push plate triggers the micro switch through the push frame. The micro switch can monitor the position of the push plate, thereby realizing remote monitoring of the working state of the operating mechanism of the isolating switch, which is conducive to improving the working reliability of the operating mechanism of the isolating switch. Therefore, the operating mechanism of the isolating switch has the advantages of simple structure, stable and reliable performance, and fast opening and closing speed.

Claims

1. An operating mechanism of an isolating switch, characterized in that: It includes a shell, a manual operating shaft rotatably arranged on the shell, a driving shaft linked with the manual operating shaft, an energy storage torsion spring arranged between the driving shaft and the shell, a pushing plate linked with the driving shaft and used to drive the contact system to perform opening and closing actions, a micro switch, and a pushing frame arranged on the shell and linked with the pushing plate. The pushing frame moves with the pushing plate and triggers the micro switch to achieve the connection or disconnection of the micro switch. The manual operating shaft is provided with a toggle groove matched with the driving shaft, and the driving shaft is engaged in the toggle groove.

2. The operating mechanism of the isolating switch according to claim 1, characterized in that: One end of the manual operating shaft has a manual operating part exposed outside the shell, the manual operating part has an operating hole, and the other end of the manual operating shaft has a rotating shaft part, which is rotatably arranged in a positioning groove in the shell.

3. The operating mechanism of the isolating switch according to claim 2, characterized in that: The manual operation part is provided with an indicating convex block, and the shell is provided with an indicating mark matched with the indicating convex block.

4. The operating mechanism of the disconnector according to claim 1 or 2, characterized in that: A guide hole is arranged on the shell corresponding to the push frame, one end of the push frame has a frame body which is slidably arranged in the guide hole and matched with the push plate, and the other end of the push frame has a push sheet which is exposed outside the shell and used to trigger the micro switch.

5. The operating mechanism of the disconnector according to claim 1 or 2, characterized in that: The two ends of the push plate are provided with two vertically bent toggle plates, one end of the drive shaft extends between the two toggle plates, the drive shaft moves with the manual operating shaft and drives the toggle plates, and forms a linkage cooperation between the toggle plates and the drive shaft.

6. The operating mechanism of the isolating switch according to claim 5, characterized in that: A push rod is provided on the push plate in linkage with the two corresponding toggling pieces. One end of the push rod is engaged with the moving contact frame of the contact system, and forms linkage cooperation between the moving contact frame and the push rod.

7. The operating mechanism of the isolating switch according to claim 6, characterized in that: The push plate is provided with a snap-in hole matched with the push rod, and the other end of the push rod has a snap-in protrusion matched with the snap-in hole. The snap-in protrusion is snapped in the snap-in hole to form a snap-in fit between the push rod and the push plate.

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