CN213093160U

CN213093160U - Isolation grounding operation mechanism for circuit breaker

Info

Publication number: CN213093160U
Application number: CN202021685496.8U
Authority: CN
Inventors: 吴臻栋; 沈刚; 张瑜; 张聪聪
Original assignee: Jiangsu Yunfeng Technology Co ltd
Current assignee: Jiangsu Yunfeng Technology Co ltd
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2021-04-30
Anticipated expiration: 2030-08-13

Abstract

The utility model relates to a circuit breaker is with keeping apart ground connection operating device includes operating axis (1), isolation transmission shaft (2) and ground connection transmission shaft (3) that are parallel to each other, be provided with operation driving gear (1.1) of fan-shaped structure on the axle wall of operating axis (1), keep apart and be provided with isolation driving gear (2.1) of fan-shaped structure on the axle wall of transmission shaft (2), be provided with ground connection driving gear (3.1) of fan-shaped structure on the axle wall of ground connection transmission shaft (3), operation driving gear (1.1) respectively with keep apart driving gear (2.1) and ground connection driving gear (3.1) intermeshing, operation driving gear (1.1), isolation driving gear (2.1) and ground connection driving gear (3.1) constitute an axle symmetry figure with the cross section of operating axis (1). The utility model relates to a circuit breaker is with keeping apart ground connection operating device, simple structure, convenient operation and safe and reliable.

Description

Isolation grounding operation mechanism for circuit breaker

Technical Field

The utility model relates to a circuit breaker is with keeping apart ground connection operating device, it has interlocking operation function.

Background

At present, an isolation disconnecting link and a grounding disconnecting link on a circuit breaker need to have an interlocking function in an operation process, namely the grounding disconnecting link needs to be ensured to be opened when the isolation disconnecting link is closed, and otherwise the isolation disconnecting link is necessarily in a closed state when the grounding disconnecting link is closed; therefore, a complex interlocking mechanism needs to be arranged on the conventional circuit breaker for operation and control, the structure is complex, the assembly wastes time and labor, the efficiency is low, and the circuit breaker is easy to fail due to aging of parts or loose linkage after long-time use; therefore, a linkage operating mechanism with safety, reliability and simple structure is needed.

Disclosure of Invention

An object of the utility model is to overcome above-mentioned not enough, provide a simple structure, convenient operation and safe and reliable's circuit breaker with keeping apart ground connection operating device.

The purpose of the utility model is realized like this:

the utility model provides an isolation ground operating mechanism for circuit breaker includes the operating axis that is parallel to each other, keeps apart transmission shaft and ground connection transmission shaft, be provided with the operation driving gear of fan-shaped structure on the axle wall of operating axis, keep apart the isolation driving gear that is provided with fan-shaped structure on the axle wall of transmission shaft, be provided with the ground connection driving gear of fan-shaped structure on the axle wall of ground connection transmission shaft, operation driving gear respectively with keep apart driving gear and ground connection driving gear intermeshing, operation driving gear, isolation driving gear and ground connection driving gear constitute an axisymmetric figure with the cross section of operating axis.

The utility model relates to a circuit breaker is with keeping apart ground connection operating device, the central angle that the operation driving gear corresponds is alpha, the central angle that the isolation driving gear corresponds is beta, the angle that the ground connection driving gear corresponds is gamma, and 120 degrees < alpha = beta = gamma and is less than or equal to 144.

The utility model relates to a circuit breaker is with keeping apart ground connection operating device, the central angle that the operation driving gear corresponds is alpha, the central angle that the isolation driving gear corresponds is beta, the angle that the ground connection driving gear corresponds is gamma, and alpha is less than or equal to 144 for 120 degrees, and beta = gamma is less than or equal to 360 for 90 degrees.

The utility model relates to a circuit breaker is with keeping apart ground connection operating device includes the operating axis that is parallel to each other, keeps apart transmission shaft and ground connection transmission shaft, be provided with the operation driving gear of fan-shaped structure on the axle wall of operating axis, keep apart the isolation driving gear that is provided with fan-shaped structure on the axle wall of transmission shaft, be provided with the ground connection driving gear of fan-shaped structure on the axle wall of ground connection transmission shaft, operation driving gear respectively with keep apart driving gear and ground connection driving gear intermeshing, the central angle that the operation driving gear corresponds is alpha, the central angle that the isolation driving gear corresponds is beta, and 90 is less than alpha and less than or equal to 120, and 90 is less than or equal to beta = gamma and is less than or equal to 360.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model utilizes the matching of the sector gears among the three shafts, thereby realizing the direct linkage relation, and compared with the conventional interlocking mechanism mode, the structure is simpler and the operation is more convenient; and the simple gear matching linkage mechanism is more reliable and is not easy to break down and malfunction, thereby greatly improving the safety performance of the gear matching linkage mechanism.

Drawings

Fig. 1 is a schematic structural diagram of an isolation grounding operation mechanism for a circuit breaker according to the present invention.

Fig. 2 is a schematic diagram of a state of the isolation grounding operation mechanism for the circuit breaker (isolation switching-off and grounding switching-on states).

Fig. 3 is a schematic diagram of a state of the isolated ground operation mechanism for the circuit breaker (isolated open state, ground open state).

Fig. 4 is a schematic diagram of a state of the isolated grounding operation mechanism for the circuit breaker (isolated switching-on state and grounding switching-off state).

Wherein:

the device comprises an operating shaft 1, an isolation transmission shaft 2 and a grounding transmission shaft 3;

operating the transmission gear 1.1;

the transmission gear is isolated by 2.1;

ground drive teeth 3.1.

Detailed Description

The first embodiment is as follows:

referring to fig. 1-4, the utility model relates to an isolated ground operation mechanism for circuit breaker, include operating shaft 1, isolated transmission shaft 2 and ground connection transmission shaft 3 that are parallel to each other, be provided with fan-shaped structure's operation driving tooth 1.1 on the shaft wall of operating shaft 1, be provided with fan-shaped structure's isolated driving tooth 2.1 on the shaft wall of isolated transmission shaft 2, be provided with fan-shaped structure's ground connection driving tooth 3.1 on the shaft wall of ground connection transmission shaft 3, operation driving tooth 1.1 meshes with isolated driving tooth 2.1 and ground connection driving tooth 3.1 respectively each other, and during initial state, operation driving tooth 1.1, isolated driving tooth 2.1 and ground connection driving tooth 3.1 constitute an axle symmetry figure with the cross section of operating shaft 1 (as shown in fig. 3, the dotted line is the plane in the cross section place in the picture, also is the symmetry axle);

further, a central angle corresponding to the operating gear 1.1 is α, a central angle corresponding to the isolating gear 2.1 is β, an angle corresponding to the grounding gear 3.1 is γ, and α = β = γ is larger than 120 ° and smaller than or equal to 144 °; the mode is the best mode, and at the moment, the three shafts are completely the same in processing, so that the manufacturing cost is low and the assembly is convenient;

further, the central angle corresponding to the operating transmission tooth 1.1 is alpha, the central angle corresponding to the isolating transmission tooth 2.1 is beta, the angle corresponding to the grounding transmission tooth 3.1 is gamma, alpha is more than 120 degrees and less than or equal to 144 degrees, beta is more than or equal to 90 degrees and less than or equal to 360 degrees; at the moment, the isolation transmission shaft 2 and the grounding transmission shaft 3 are different from the operation shaft 1 and need to be processed separately, but can still be realized based on the conception scheme of the patent;

example two:

an isolation grounding operation mechanism for a circuit breaker comprises an operation shaft 1, an isolation transmission shaft 2 and a grounding transmission shaft 3 which are parallel to each other, wherein an operation transmission tooth 1.1 with a sector structure is arranged on the shaft wall of the operation shaft 1, an isolation transmission tooth 2.1 with a sector structure is arranged on the shaft wall of the isolation transmission shaft 2, a grounding transmission tooth 3.1 with a sector structure is arranged on the shaft wall of the grounding transmission shaft 3, the operation transmission tooth 1.1 is meshed with the isolation transmission tooth 2.1 and the grounding transmission tooth 3.1 respectively, alpha is more than 90 degrees and less than or equal to 120 degrees, and beta is more than or equal to 90 degrees and less than or equal to gamma, and is less than or equal to 360. At this time, due to the existence of idle stroke, the interlocking linkage effect can be realized without the axial symmetry state of the isolation transmission gear 2.1 and the grounding transmission gear 3.1 in the initial state. Although the interlocking effect can be achieved in this embodiment, the existence of the idle stroke inevitably affects the operation feeling and the user experience, so that the present embodiment is not the best embodiment, but still belongs to the protection scope of the patent.

In view of the above, any modifications or improvements that may occur to those skilled in the art based on the foregoing concepts are intended to be within the scope of this patent.

Claims

1. An isolation grounding operation mechanism for a circuit breaker is characterized in that: include operating shaft (1), isolation transmission shaft (2) and ground connection transmission shaft (3) that are parallel to each other, be provided with operation driving tooth (1.1) of fan-shaped structure on the axle wall of operating shaft (1), be provided with isolation driving tooth (2.1) of fan-shaped structure on the axle wall of isolation transmission shaft (2), be provided with ground connection driving tooth (3.1) of fan-shaped structure on the axle wall of ground connection transmission shaft (3), operation driving tooth (1.1) respectively with keep apart driving tooth (2.1) and ground connection driving tooth (3.1) intermeshing, operation driving tooth (1.1), isolation driving tooth (2.1) and ground connection driving tooth (3.1) constitute an axle symmetry figure with the cross section of operating shaft (1).

2. The isolated ground operating mechanism for a circuit breaker of claim 1, further comprising: the central angle corresponding to the operating transmission teeth (1.1) is alpha, the central angle corresponding to the isolating transmission teeth (2.1) is beta, the angle corresponding to the grounding transmission teeth (3.1) is gamma, and alpha = beta = gamma is more than 120 degrees and less than or equal to 144 degrees.

3. The isolated ground operating mechanism for a circuit breaker of claim 1, further comprising: the central angle corresponding to the operation transmission teeth (1.1) is alpha, the central angle corresponding to the isolation transmission teeth (2.1) is beta, the angle corresponding to the grounding transmission teeth (3.1) is gamma, alpha is larger than 120 degrees and is less than or equal to 144 degrees, beta is larger than or equal to 90 degrees and is = gamma and is less than or equal to 360 degrees.

4. An isolation grounding operation mechanism for a circuit breaker is characterized in that: the novel electric welding machine comprises an operating shaft (1), an isolating transmission shaft (2) and a grounding transmission shaft (3) which are parallel to each other, wherein an operating transmission tooth (1.1) with a sector structure is arranged on the shaft wall of the operating shaft (1), an isolating transmission tooth (2.1) with a sector structure is arranged on the shaft wall of the isolating transmission shaft (2), a grounding transmission tooth (3.1) with a sector structure is arranged on the shaft wall of the grounding transmission shaft (3), the operating transmission tooth (1.1) is meshed with the isolating transmission tooth (2.1) and the grounding transmission tooth (3.1) respectively, a central angle corresponding to the operating transmission tooth (1.1) is alpha, a central angle corresponding to the isolating transmission tooth (2.1) is beta, alpha is more than 90 degrees and less than or equal to 120 degrees, and beta is more than or equal to 90 degrees and is less than or equal to 360 degrees.