CN103745878B - A kind of permanent magnetic vacuum breaker operating grip - Google Patents

Abstract

The operating handle of a permanent magnet vacuum circuit breaker of the present invention adopts a cantilever whose length is two-thirds of the length of the handle. A turntable and a roller are arranged at the front end of the cantilever. The front end is integrated with the rotating shaft; the second and first positioning threads are arranged at the front and rear of the cantilever; a handle with a sleeve structure is used, a spring is installed in the handle, and an internal thread is provided at the mouth end of the handle, and the internal thread The first and second positioning threads are corresponding spiral connection structures; the handle is sleeved on the cantilever: when the internal thread is spirally connected with the second positioning thread, the rear end of the handle only protrudes from the permanent magnet A short section of the panel of the vacuum circuit breaker; most of the rear end of the handle protrudes from the panel when the internal thread is screwed to the first positioning thread. The present invention integrates the design of the operating handle and the permanent magnet vacuum circuit breaker body, making the permanent magnet vacuum circuit breaker more integral and more reliable in operation.

Description

An operating handle of a permanent magnet vacuum circuit breaker

technical field

The invention relates to the technical field of permanent magnet vacuum circuit breakers, in particular to an operating handle of a permanent magnet vacuum circuit breaker.

Background technique

Due to the advantages of simple structure, fast and reliable action, long mechanical life, convenient operation, energy saving and environmental protection, permanent magnet vacuum circuit breakers are currently being used more and more widely in power systems. In the current situation, the (manual) operating handle of the permanent magnet vacuum circuit breaker is designed separately from the body of the permanent magnet vacuum circuit breaker, see Figure 1. The operating handle of the existing permanent magnet vacuum circuit breaker includes a cantilever 12 connected to the rotating shaft 11 of the permanent magnet vacuum circuit breaker and a cylindrical handle 13 sleeved on the cantilever 12. In the separated state, when the permanent magnet vacuum circuit breaker needs to be manually operated and overhauled in actual operation, the handle 13 is far away from the circuit breaker, which will cause inconvenience to the operation and increase the workload of the operation and management of the permanent magnet vacuum circuit breaker.

Contents of the invention

The purpose of the present invention is to overcome the above disadvantages and provide a permanent magnet vacuum circuit breaker operating handle, which is a structure designed integrally with the permanent magnet vacuum circuit breaker body, which can greatly increase the reliability of the operation of the permanent magnet vacuum circuit breaker. improve.

In order to achieve the above object, the present invention adopts the following technical solutions.

An operating handle of a permanent magnet vacuum circuit breaker, comprising a cantilever and a handle, characterized in that a turntable is provided at the front end of the cantilever, and a roller is arranged on the inner wall of the turntable, and the roller can hold the permanent magnet The rotating shaft of the vacuum circuit breaker integrates the front end of the cantilever with the rotating shaft; a second positioning thread is provided at the front of the cantilever, and a first positioning thread is provided at the rear of the cantilever; the handle It is a sleeve structure, and an internal thread is provided at the mouth end of the handle, and the internal thread is a corresponding spiral connection structure with the first positioning thread and the second positioning thread; the handle is sleeved on the cantilever.

Further, the length of the cantilever is two-thirds of the length of the handle.

Further, a spring is installed in the handle.

Further, when the handle is screwed to the second positioning thread through an internal thread, the rear end of the handle only protrudes a short distance from the panel of the permanent magnet vacuum circuit breaker.

Further, when the handle is screwed to the first positioning thread through an internal thread, most of the rear end of the handle protrudes from the panel of the permanent magnet vacuum circuit breaker.

Further, the roller and the rotating shaft adopt an overrunning clutch structure.

The positive effect of the operating handle of a permanent magnet vacuum circuit breaker of the present invention is:

The permanent magnet vacuum circuit breaker operating handle is integrated with the permanent magnet vacuum circuit breaker body. The operating handle is retracted in the circuit breaker panel when it is not working. When the permanent magnet vacuum circuit breaker needs manual operation and maintenance, the operating handle is unfolded. The operation makes the permanent magnet vacuum circuit breaker more integrated, reduces the workload of permanent magnet vacuum circuit breaker operation management, and makes the permanent magnet vacuum circuit breaker more reliable in operation.

Description of drawings

Fig. 1 is a structural schematic diagram of an operating handle of a conventional permanent magnet vacuum circuit breaker.

The labels in the figure are:

11. Shaft; 12. Cantilever;

13. Handle; 14. Panel.

Fig. 2 is a structural schematic diagram of an operating handle of a permanent magnet vacuum circuit breaker according to the present invention.

Fig. 3 is a structural schematic diagram of an extended state of an operating handle of a permanent magnet vacuum circuit breaker according to the present invention.

The labels in the figure are:

21. Turntable; 22. Roller; 23. Rotary shaft;

24. Cantilever; 25. Handle; 26. Spring;

27. Panel; 28. First positioning thread; 29. Second positioning thread.

Detailed ways

A specific implementation of an operating handle of a permanent magnet vacuum circuit breaker according to the present invention is given below in conjunction with the accompanying drawings, however, the implementation of the present invention is not limited to the following implementation.

See Figure 2. An operating handle of a permanent magnet vacuum circuit breaker includes a turntable 21 , a roller 22 , a cantilever 24 , a handle 25 , a spring 26 , a first positioning thread 28 and a second positioning thread 29 . Adopt a cantilever 24 whose length is two-thirds of the handle 25 length. A turntable 21 is set at the front end of the cantilever 24, and a roller 22 is arranged on the inner wall of the turntable 21, and the roller 22 can block the rotating shaft 23 of the permanent magnet vacuum circuit breaker (the roller 22 and the The rotating shaft 23 adopts an overrunning clutch structure), so that the front end of the cantilever 24 is connected with the rotating shaft 23 as a whole. A second positioning thread 29 should be provided at the front of the cantilever 24 (a position close to the cantilever 24 ), and a first positioning thread 28 should be provided at the rear of the cantilever 24 .

The handle 25 is a sleeve structure, and an internal thread is provided at the mouth end of the handle 25, and the internal thread and the first positioning thread 28 and the second positioning thread 29 are corresponding spiral connection structures. The handle 25 is sleeved on the cantilever 24 and a spring 26 is installed in the handle 25 . When the handle 25 is screwed to the second positioning thread 29 through an internal thread, the rear end of the handle 25 only protrudes a short distance from the panel 27 of the permanent magnet vacuum circuit breaker (see FIG. 2 ). When the handle 25 is screwed to the first positioning thread 28 through an internal thread, most of the rear end of the handle 25 protrudes from the panel 27 of the permanent magnet vacuum circuit breaker (see FIG. 3 ).

The operating handle of a permanent magnet vacuum circuit breaker of the present invention has the following structural features:

(1) The operating handle of the permanent magnet vacuum circuit breaker is integrated with the permanent magnet vacuum circuit breaker body. A turntable 21 and a roller 22 are arranged at the front end of the cantilever 24, and the cantilever 24 clamps the permanent magnet vacuum through the roller 22. The rotating shaft 23 of the circuit breaker makes the cantilever 24 integrally connected with the rotating shaft 23 .

(2) The cantilever 24 is designed to be lengthened (compared to the cantilever 12 of the existing permanent magnet vacuum circuit breaker), so that the length of the cantilever 24 reaches two-thirds of the length of the handle 25 .

(3) Sleeve the handle 25 on the cantilever 24, so that the handle 25 can be folded or unfolded on the cantilever 24 through a spiral connection structure, and the spring 26 installed in the handle 25 can make the folded Or it is more convenient to unfold; it not only ensures that the handle 25 has a large enough torque when it is unfolded, but also makes the handle 25 basically shrink inside the panel 27 of the permanent magnet vacuum circuit breaker when it is in the retracted state, so as not to affect the permanent magnet vacuum circuit breaker. overall arrangement.

(4) After the integrated design of the permanent magnet vacuum circuit breaker operating handle and the permanent magnet vacuum circuit breaker body, the integrity of the permanent magnet vacuum circuit breaker is stronger and the operation of the permanent magnet vacuum circuit breaker is more reliable.

Claims (5)

1. An operating handle of a permanent magnet vacuum circuit breaker, comprising a cantilever (24) and a handle (25), characterized in that a turntable (21) is provided at the front end of the cantilever (24), and the turntable (21) A roller (22) is provided on the inner wall of the cantilever (22), which can hold the rotating shaft (23) of the permanent magnet vacuum circuit breaker so that the front end of the cantilever (24) is integrated with the rotating shaft (23) ; A second positioning thread (29) is provided at the front of the cantilever (24), and a first positioning thread (28) is provided at the rear of the cantilever (24); the handle (25) is a sleeve structure, a spring (26) is installed in the handle (25), and an internal thread is provided at the mouth end of the handle (25), and the internal thread is connected with the first positioning thread (28) and the second positioning thread (29) is a corresponding spiral connection structure; the handle (25) is sleeved on the cantilever (24). 2. The operating handle of a permanent magnet vacuum circuit breaker according to claim 1, wherein the length of the cantilever (24) is two-thirds of the length of the handle (25). 3. The operating handle of a permanent magnet vacuum circuit breaker according to claim 1, characterized in that, when the handle (25) is screwed to the second positioning thread (29) through an internal thread, the handle ( 25) The rear end only stretches out a small section of the permanent magnet vacuum circuit breaker panel (27). 4. The operating handle of a permanent magnet vacuum circuit breaker according to claim 1, characterized in that, when the handle (25) is screwed to the first positioning thread (28) through an internal thread, the handle ( 25) Most of the rear end sticks out of the panel (27) of the permanent magnet vacuum circuit breaker. 5. The operating handle of a permanent magnet vacuum circuit breaker according to claim 1, wherein the roller (22) and the rotating shaft (23) adopt an overrunning clutch structure.