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 rotating shaft arranged on the manual operation shaft in a linkage mode, a driving shaft matched with the rotating shaft in a linkage mode, an energy storage torsion spring arranged between the driving shaft and the shell, and a pushing plate matched with the driving shaft in a linkage mode and used for driving a contact system to execute opening and closing actions. The manual operation shaft is provided with a cam portion matched with the rotating shaft, the rotating shaft is provided with a transmission groove matched with the cam portion, the cam portion is arranged in the transmission groove, the cam portion acts along with the manual operation shaft and reciprocates in the transmission groove, and linkage matching of the rotating shaft and the cam portion is formed. 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 rotating shaft linked to the manual operating shaft, a driving shaft linked with the rotating shaft, an energy storage torsion spring arranged between the driving shaft and the shell, and a pushing plate linked with the driving shaft and used to drive the contact system to perform opening and closing actions, the manual operating shaft is provided with a cam portion matched with the rotating shaft, the rotating shaft is provided with a transmission groove matched with the cam portion, the cam portion is arranged in the transmission groove, and the cam portion moves with the manual operating shaft and reciprocates in the transmission groove, and constitutes a linkage cooperation between the rotating shaft and the cam portion.

[0006] The beneficial effects of the above structure are: the operating mechanism adopts an energy storage structure design. During operation, the manual operating shaft drives the drive shaft to move through the rotating 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 manual operating shaft drives the rotating shaft to move through the cam part. When the energy storage torsion spring releases energy (over the dead point), the energy storage torsion spring drives the drive shaft and the rotating shaft to move, and the drive shaft can drive the push plate to perform the opening and closing action, thereby achieving the purpose of the operating mechanism being independent of human operation, and the operation is more convenient. Therefore, the operating mechanism of the disconnector has the advantages of simple structure, stable and reliable performance, and fast opening and closing speed.

[0007] In particular, the rotating shaft is provided with a toggle groove matched with the driving shaft, and the driving shaft is engaged in the toggle groove. The driving shaft is engaged in the toggle groove of the rotating shaft, which facilitates the assembly of the driving shaft and the rotating shaft, and can ensure that the rotating shaft can reliably drive the driving shaft to move, which is conducive to improving the working reliability of the operating mechanism of the isolating switch.

[0008] In particular, one end of the manual operating shaft passes through the through hole of the rotating shaft and has a manual operating part exposed outside the housing, the manual operating part has an operating hole, and the other end of the manual operating shaft has a rotating shaft part, and the rotating shaft part 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 part, and the assembly of the manual operating shaft and the housing is more convenient, thereby ensuring that the manual operating shaft can rotate reliably.

[0009] 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 rotating 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.

[0010] 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional diagram of the isolating switch according to an embodiment of the utility model.

[0012] Figure 2 This is an exploded view of the isolating switch according to an embodiment of the utility model.

[0013] Figure 3 It is a three-dimensional diagram of an embodiment of the utility model.

[0014] Figure 4 It is a three-dimensional diagram of the manual operating shaft according to an embodiment of the utility model. DETAILED DESCRIPTION

[0015] like Figures 1 to 4As shown, the 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 rotating shaft 12 linked to the manual operating shaft 11, a driving shaft 13 linked to the rotating shaft 12, an energy storage torsion spring 14 arranged between the driving shaft 13 and the housing 10, and a push plate 15 linked to the driving shaft 13 and used to drive the contact system 20 to perform the opening and closing action. The manual operating shaft 11 is provided with a cam portion 111 matched with the rotating shaft 12, and the rotating shaft 12 is provided with a transmission groove 121 matched with the cam portion 111. The cam portion 111 is arranged in the transmission groove 121, and the cam portion 111 moves with the manual operating shaft 11 and reciprocates in the transmission groove 121, and constitutes the linkage cooperation between the rotating shaft 12 and the cam portion 111. The rotating shaft 12 is provided with a toggle groove 122 matched with the driving shaft 13, and the driving shaft 13 is engaged in the toggle groove 122. The drive shaft is engaged in the toggle groove of the rotating shaft, which is convenient for assembling the drive shaft and the rotating shaft and can ensure that the rotating shaft can reliably drive the drive shaft to move, which is beneficial to improving the working reliability of the operating mechanism of the isolating switch.

[0016] like Figure 2 and 4 As shown, one end of the manual operating shaft 11 passes through the through hole 123 of the rotating shaft 12 and has a manual operating part 112 exposed outside the housing 10, and the manual operating part 112 has an operating hole 113, and the other end of the manual operating shaft 11 has a rotating shaft part 114, and the rotating shaft part 114 is rotatably arranged in the positioning groove 101 in the housing 10. The manual operating shaft is rotatably arranged in the positioning groove through the main shaft part, 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 two ends of the push plate 15 have two vertically bent toggle pieces 151, and one end of the drive shaft 13 extends between the two toggle pieces 151. The drive shaft 13 moves with the rotating shaft 12 and drives the toggle piece 151, and forms a linkage cooperation between the toggle piece 151 and the drive shaft 13. The drive shaft toggles the push plate through the toggle piece, thereby ensuring that the transmission of the push plate and the drive shaft is more reliable. A push rod 16 is provided on the push plate 15 in linkage with the two corresponding toggling pieces 151, and one end of the push rod 16 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 16. 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.

[0017] The operating mechanism adopts an energy storage structure design. During operation, the manual operating shaft drives the driving shaft through the rotating shaft, and the driving 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 driving shaft, and the driving 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 manual operating shaft drives the rotating shaft through the cam part. When the energy storage torsion spring releases energy (over the dead point), the energy storage torsion spring drives the driving shaft and the rotating shaft to move, and the driving shaft can drive the push plate to perform the opening and closing action, thereby achieving the purpose of the operating mechanism being independent of human operation, and the operation is more convenient. Therefore, the operating mechanism of the disconnector 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 rotating shaft linked to the manual operating shaft, a driving shaft linked with the rotating shaft, an energy storage torsion spring arranged between the driving shaft and the shell, and a pushing plate linked with the driving shaft and used to drive the contact system to perform opening and closing actions. The manual operating shaft is provided with a cam portion that cooperates with the rotating shaft, and the rotating shaft is provided with a transmission groove that cooperates with the cam portion. The cam portion is arranged in the transmission groove, and the cam portion moves with the manual operating shaft and reciprocates in the transmission groove, and forms a linkage cooperation between the rotating shaft and the cam portion.

2. The operating mechanism of the isolating switch according to claim 1, characterized in that: The rotating shaft is provided with a toggle groove matched with the driving shaft, and the driving shaft is engaged in the toggle groove.

3. The operating mechanism of the disconnector according to claim 1 or 2, characterized in that: One end of the manual operating shaft passes through the through hole of the rotating shaft and 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.

4. 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 pieces, one end of the drive shaft extends between the two toggle pieces, the drive shaft moves with the rotating shaft and drives the toggle pieces, and forms a linkage cooperation between the toggle pieces and the drive shaft.

5. The operating mechanism of the isolating switch according to claim 4, 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.

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