CN216928372U

CN216928372U - Isolating switch

Info

Publication number: CN216928372U
Application number: CN202122720798.5U
Authority: CN
Inventors: 刘晓杰
Original assignee: Zealwell Electric Co ltd
Current assignee: Zealwell Electric Co ltd
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-07-08
Anticipated expiration: 2031-11-09

Abstract

The utility model discloses an isolating switch which comprises a plurality of insulating supporting seats, wherein static contacts are fixedly arranged at the bottom parts in the insulating supporting seats, the static contacts are electrically connected through a switch operating shaft, bent conducting strips are fixedly connected to the end parts of the static contacts, one ends of the insulating supporting seats, which are far away from the static contacts, are rotatably connected with operating cover plates, free ends of the operating cover plates are fixedly connected with isolating knives, and resistance increasing mechanisms for increasing resistance of the operating cover plates during rotation are arranged in the insulating supporting seats. The isolating switch can be set to be rotary by arranging the insulating supporting seat, the operation revising plate, the isolating knife, the resistance increasing mechanism and the like, and the pushing type of the traditional isolating switch is replaced, so that the function of visible fracture is realized after the isolating switch is opened, the operating cover plate can be locked in a natural state, and the condition that an operator or other personnel cannot touch the operating cover plate without worry under the error condition to change the opening and closing state of the switch is avoided.

Description

Isolating switch

Technical Field

The utility model relates to the technical field of circuit breakers, in particular to a disconnecting switch.

Background

In the field of circuit breakers, a disconnecting switch is needed to control the working state of the circuit breaker, and the disconnecting switch is used for disconnecting a circuit with no load current, so that the overhauled equipment and a power supply have obvious disconnection points, and the safety of overhaulers is ensured. The disconnector cannot break load and short-circuit currents without special arc-extinguishing devices, so it must be operated in the event of the circuit breaker breaking the circuit.

The existing isolating switch for the circuit breaker generally adopts a push opening-closing type switch, so that a visible fracture does not exist after the switch is opened, an operator cannot see an obvious disconnection point, and certain danger exists during operation; meanwhile, the existing isolating switch is not provided with a self-locking device, so that misoperation is easy to occur to operators in a natural state, and the state of the isolating switch is changed, so that the operators have certain danger.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a disconnecting switch.

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

the utility model provides an isolating switch, includes a plurality of insulating supporting seats, the equal fixed mounting in bottom has the static contact, and is a plurality of the static contact passes through switch operating shaft electric connection, the equal fixedly connected with conducting strip of buckling of static contact tip, the insulating supporting seat is kept away from the one end of static contact is rotated and is connected with the operation apron, operation apron free end fixedly connected with keeps apart the sword, install in the insulating supporting seat and be used for increasing the resistance when operation apron rotates and increase the resistance mechanism.

Preferably, the resistance increasing mechanism comprises a resistance sliding block and a connecting rod, the resistance sliding block slides in a resistance mode between the inner walls of the insulating supporting seat, one end of the connecting rod is rotatably connected to the upper end of the resistance sliding block, the other end of the connecting rod is rotatably connected to the operating cover plate, and a control mechanism used for fixing or loosening the resistance sliding block is installed on the side wall of the insulating supporting seat.

Preferably, the control mechanism comprises a control pin rod and a return spring, first pin holes are formed in two sides of the side wall of the insulating support seat, second pin holes matched with the first pin holes are formed in the side wall of the resistance sliding block, the control pin rod is inserted into the first pin holes and the second pin holes, and the return spring is elastically connected between the end part of the control pin rod and the side wall of the insulating support seat.

Preferably, the fixed contact and the bent conducting strip are both made of red copper materials, and the surfaces of the fixed contact and the bent conducting strip are both subjected to tin plating treatment.

Preferably, the outer diameter of the isolation knife is the same as the inner diameter of the static contact.

The utility model has the following beneficial effects:

1. by arranging the insulating supporting seat, the operation revising plate, the isolating knife and the resistance increasing mechanism, the isolating switch can be set to be rotary, and the pushing type of the traditional isolating switch is replaced, so that the isolating switch has the function of a visible fracture after being switched off;

2. through setting up resistance-increasing mechanism and control mechanism, under natural state, the control pin pole can insert in first pinhole and the second pinhole under reset spring's elasticity effect to fix the resistance slider, and then pin operation cover plate, avoid operating personnel or other personnel not worry down under the error condition to touch operation cover plate, lead to changing the state of opening and shutting of switch.

Drawings

Fig. 1 is a schematic structural diagram of an isolating switch according to the present invention in an off state;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

fig. 3 is a schematic structural diagram of an isolating switch according to the present invention in a closed state.

In the figure: 1. an insulating support seat; 2. static contact; 3. a switch operation shaft; 4. bending the conducting sheet; 5. operating the cover plate; 6. an isolation knife; 7. a resistance slider; 8. a connecting rod; 9. a control pin; 10. a first pin hole; 11. a second pin hole; 12. a return spring.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-3, an isolating switch comprises a plurality of insulating supporting seats 1, wherein static contacts 2 are fixedly mounted at the bottom of each insulating supporting seat 1, the static contacts 2 are electrically connected through a switch operating shaft 3, bent conducting strips 4 are fixedly connected to the end portions of the static contacts 2, an operating cover plate 5 is rotatably connected to one end, far away from the static contacts 2, of each insulating supporting seat 1, and an isolating knife 6 is fixedly connected to the free end of each operating cover plate 5.

And a resistance increasing mechanism for increasing the resistance of the operation cover plate 5 during rotation is arranged in the insulation supporting seat 1. Resistance-increasing mechanism includes resistance slider 7 and connecting

rod

8, and 7 resistance of resistance slider slide between the relative inner wall of insulating supporting

seat

1, and 8 one ends of connecting rod rotate to be connected in 7 upper ends of resistance slider, and 8 other ends of connecting rod rotate to be connected on operation apron 5, install on the 1 lateral wall of insulating supporting seat and be used for fixing or loosen the control mechanism of resistance slider 7.

Control mechanism includes control pin pole 9 and reset spring 12, and first pinhole 10 has all been seted up to 1 lateral wall both sides of insulating supporting seat, offers on the resistance slider 7 lateral wall with first pinhole 10 complex second pinhole 11, control pin pole 9 is inserted and is established in first pinhole 10 and second pinhole 11, reset spring 12 elastic connection is between 9 tip of control pin pole and 1 lateral wall of insulating supporting seat.

The static contact 2 and the bent conducting strip 4 are both made of red copper materials, and the surfaces of the static contact 2 and the bent conducting strip 4 are both subjected to tin plating treatment.

The outer diameter of the isolating knife 6 is the same as the inner diameter of the static contact 2, so that the isolating knife 6 can be smoothly inserted into the static contact 2 to complete the operation of changing the opening and closing state of the switch.

In the utility model, when the switch opening and closing state is changed by operation, the control pin rod 9 is pulled to be separated from the second pin hole 11, the fixing action of the control pin rod 9 on the resistance sliding block 7 is cancelled, so that the resistance sliding block 7 can slide, and at the moment, an operator can rotate the operation cover plate 5 clockwise or anticlockwise, so that the isolation knife 6 on the operation cover plate 5 is inserted into or pulled out of the static contact 2, and the opening or closing state of the isolation switch is changed.

Set up isolator into the rotation type, replace traditional isolator's promotion formula to realize having the function of visual fracture behind the isolator separating brake, and can pin operation cover plate 5 under the natural state, avoid operating personnel or other personnel not worry down to touch operation cover plate 5 under the error condition, lead to changing the state of opening and shutting of switch.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The isolating switch comprises a plurality of insulating supporting seats (1) and is characterized in that a static contact (2) is fixedly mounted at the bottom of each insulating supporting seat (1) and is electrically connected with each other through a switch operating shaft (3), a bent conducting strip (4) is fixedly connected to the end portion of each static contact (2), one end, far away from each static contact (2), of each insulating supporting seat (1) is rotatably connected with an operating cover plate (5), an isolating knife (6) is fixedly connected to the free end of each operating cover plate (5), and a resistance increasing mechanism for increasing resistance when the operating cover plates (5) rotate is mounted in each insulating supporting seat (1).

2. The isolating switch according to claim 1, wherein the resistance increasing mechanism comprises a resistance slider (7) and a connecting rod (8), the resistance slider (7) slides between the opposite inner walls of the insulating support base (1) in a resistance manner, one end of the connecting rod (8) is rotatably connected to the upper end of the resistance slider (7), the other end of the connecting rod (8) is rotatably connected to the operating cover plate (5), and a control mechanism for fixing or loosening the resistance slider (7) is mounted on the side wall of the insulating support base (1).

3. The isolating switch according to claim 2, wherein the control mechanism comprises a control pin rod (9) and a return spring (12), first pin holes (10) are formed in both sides of the side wall of the insulating support seat (1), second pin holes (11) matched with the first pin holes (10) are formed in the side wall of the resistance slider (7), the control pin rod (9) is inserted into the first pin holes (10) and the second pin holes (11), and the return spring (12) is elastically connected between the end of the control pin rod (9) and the side wall of the insulating support seat (1).

4. The isolating switch according to claim 1, wherein the fixed contact (2) and the bent conducting strip (4) are made of red copper, and the surfaces of the fixed contact (2) and the bent conducting strip (4) are plated with tin.

5. An isolating switch according to claim 1, characterized in that the outer diameter of the isolating blade (6) is the same as the inner diameter of the stationary contact (2).