Manual opening and closing operating device for circuit breaker

Abstract

The present invention discloses a manual opening and closing operating device for a circuit breaker, comprising a handle, a support plate, an electromagnet mechanism, and a connecting block. The handle comprises a handle body, an opening support rod, a closing support rod, a supporting portion, and a groove. The handle body comprises an opening working section, a closing working section, and a connecting section connecting the opening working section and the closing working section. The electromagnet mechanism comprises a moving iron core, a stationary iron core, and a moving iron core tail rod. One end of the moving iron core is fixedly connected to one end of the moving iron core tail rod, and the other end of the moving iron core is fixedly connected to the connecting block, which is connected to the opening and closing mechanism of the circuit breaker. The other end of the moving iron core tail rod passes through the stationary iron core and the support plate, and a circular hole matching the size of the closing support rod is formed in the moving iron core tail rod at this end. The support plate is also provided with a positioning portion, which is provided with a circular hole matching the size of the opening support rod. The present invention can directly perform opening and closing operations without using an electrical circuit, and has a simple structure and is easy to operate.

Description

Technical Field

[0001] The present invention relates to the field of switchgear, and in particular to a manual opening and closing operating device for a circuit breaker. Background Art

[0002] In rail transit DC traction power supply systems, in addition to electrical devices controlling the opening and closing of circuit breakers, manual opening and closing devices are also required. This is because: 1) emergency opening is required when a fault occurs in the circuit breaker's secondary circuit; and 2) manual opening and closing operations are performed for convenience when the circuit breaker's main circuit is de-energized during commissioning and maintenance. Existing manual opening and closing devices suffer from complex structures and difficult operation. Summary of the Invention

[0003] In order to solve the problems raised in the above background technology, an object of the present invention is to provide a manual opening and closing operating device for a circuit breaker.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] A manual opening and closing operating device for a circuit breaker, comprising a handle, a support plate, an electromagnet mechanism and a connecting block;

[0006] The handle includes a handle body, a switch-opening support rod, a switch-closing support rod, a support portion and a groove;

[0007] The handle body includes an opening working section, a closing working section, and a connecting section connecting the opening working section and the closing working section;

[0008] The opening brake support rod is fixedly arranged at the outer end of the opening brake working section, and the groove is provided in the middle of the opening brake working section;

[0009] The closing support rod is fixedly arranged in the middle of the closing working section, and the supporting portion is arranged at the outer end of the closing working section;

[0010] The electromagnet mechanism includes a moving iron core, a static iron core and a moving iron core tail rod;

[0011] One end of the moving iron core is fixedly connected to one end of the moving iron core tail rod, and the other end of the moving iron core is fixedly connected to the connecting block, and the connecting block is connected to the opening and closing mechanism of the circuit breaker;

[0012] The other end of the moving iron core tail rod passes through the static iron core and the support plate, and a circular hole matching the size of the closing support rod is opened on the moving iron core tail rod at this end;

[0013] The support plate is further provided with a positioning portion, and the positioning portion is provided with a circular hole that matches the size of the opening brake support rod.

[0014] In some embodiments, the opening working section and the connecting section of the handle body are perpendicular to each other, and the transition area between the opening working section and the connecting section is arc-shaped; the closing working section and the connecting section of the handle body are perpendicular to each other, and the transition area between the closing working section and the connecting section is arc-shaped.

[0015] In some embodiments, the support portion is a support wheel, and the support wheel is rotatably mounted on the outer end of the closing working section via a rotating shaft.

[0016] In some embodiments, the electromagnet mechanism further includes a spring, the spring is sleeved on the tail rod of the moving iron core, and both ends of the spring are limited by the moving iron core and the static iron core respectively.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The manual opening and closing operating device for a circuit breaker provided by the present invention can directly perform opening and closing operations without going through an electrical circuit during debugging and maintenance of the circuit breaker. It has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a handle of a manual opening and closing operating device for a circuit breaker provided by the present invention;

[0020] Figure 2 A schematic diagram of the manual opening and closing operating device of the circuit breaker provided by the present invention performing a manual closing operation;

[0021] Figure 3 A schematic diagram of the manual opening and closing operating device of the circuit breaker provided by the present invention performing a manual opening operation;

[0022] Description of reference numerals:

[0023] 1. Handle; 2. Support plate; 3. Electromagnet mechanism; 4. Connecting block; 11. Handle body; 12. Opening support rod; 13. Closing support rod; 14. Support part; 15. Groove; 21. Positioning part; 31. Moving iron core tail rod; 32. Moving iron core; 33. Static iron core; 34. Spring. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the following further describes how the present invention is implemented in conjunction with the accompanying drawings and specific implementation methods.

[0025] Reference Figure 1-Figure 3As shown, the present invention provides a manual opening and closing operating device for a circuit breaker, comprising a handle 1, a support plate 2, an electromagnet mechanism 3 and a connecting block 4; the handle 1 comprises a handle body 11, an opening support rod 12, a closing support rod 13, a support portion 14 and a groove 15; the handle body 11 comprises an opening working section, a closing working section and a connecting section connecting the opening working section and the closing working section; the opening support rod 12 is fixedly arranged at the outer end of the opening working section, and the groove 15 is opened in the middle of the opening working section; the closing support rod 13 is fixedly arranged in the middle of the closing working section, and the support portion 14 is arranged at the outer end of the closing working section.

[0026] The electromagnet mechanism 3 includes a moving iron core 32, a static iron core 33 and a moving iron core tail rod 31; one end of the moving iron core 32 is fixedly connected to one end of the moving iron core tail rod 31, and the other end of the moving iron core 32 is fixedly connected to the connecting block 4, and the connecting block 4 is connected to the opening and closing mechanism of the circuit breaker; the other end of the moving iron core tail rod 31 passes through the static iron core 33 and the support plate 2, and a circular hole that matches the size of the closing support rod 13 is opened on the moving iron core tail rod 31 at this end.

[0027] The support plate 2 is further provided with a positioning portion 21 , and the positioning portion 21 is provided with a circular hole that matches the size of the opening support rod 12 .

[0028] Preferably, if Figure 1 As shown, the opening working section and the connecting section of the handle body 11 are perpendicular to each other, and the transition area between the opening working section and the connecting section is arc-shaped; the closing working section and the connecting section of the handle body 11 are perpendicular to each other, and the transition area between the closing working section and the connecting section is arc-shaped.

[0029] Preferably, the support portion 14 is a support wheel, which is rotatably mounted on the outer end of the closing working section via a rotating shaft.

[0030] Furthermore, the electromagnet mechanism 3 further includes a spring 34 , which is sleeved on the movable iron core tail rod 31 , and both ends of the spring 34 are limited by the movable iron core 32 and the static iron core 33 respectively.

[0031] The working principle of the manual opening and closing operating device of the circuit breaker provided by the present invention is as follows:

[0032] Manual closing process is as follows Figure 2As shown, in the initial state, the circuit breaker electromagnet is not energized and the circuit breaker is in the open state. The closing support rod 13 of the handle 1 is inserted into the circular hole at the end of the movable iron core tail rod 31, and the support portion 14 is placed on the support plate 2 as a fulcrum. The handle 1 is rotated counterclockwise in the direction shown in the figure, and the movable iron core tail rod 31 is pulled, thereby pulling the movable iron core 32 of the electromagnet mechanism 3 toward the static iron core 33. The movable iron core 32 drives the circuit breaker's opening and closing mechanism to operate through the connecting block 4. When the movable iron core 32 of the electromagnet mechanism 3 is close to the static iron core 33, the circuit breaker's opening and closing mechanism closes the circuit breaker through a mechanical lock. It can be understood that during the manual closing operation, the support portion 14 is always in contact with the support plate 2. The initial limit position of the support portion 14 is above the positioning portion 21. As the handle 1 is rotated, the support portion 14 rotates upward against the support plate 2, while pulling the movable iron core tail rod 31.

[0033] Manual opening process is as follows Figure 3 As shown, in the initial state, the circuit breaker is in the closed state. Insert the opening support rod 12 of the handle 1 into the circular hole of the positioning part 21 and use it as the rotation center. Figure 3 Push the handle 1 in the direction shown. At this time, the end of the movable iron core tail rod 31 of the electromagnet mechanism 3 cooperates with the groove 15 of the opening and closing handle 1. Under the action of a pushing force of about 200N, the movable iron core tail rod 31 and the movable iron core 32 are pushed in the direction away from the static iron core 33, thereby disengaging the mechanical lock of the circuit breaker. Under the action of the spring force of the spring 34 of the electromagnet mechanism 3 and the circuit breaker movement mechanism, once the mechanical lock of the circuit breaker is disengaged, the circuit breaker contacts can be driven to quickly open.

[0034] In summary, the manual opening and closing operating device for a circuit breaker provided by the present invention can directly perform opening and closing operations without going through an electrical circuit during debugging and maintenance of the circuit breaker. It has a simple structure and is easy to operate.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be covered by the scope of the claims of the present invention.

Claims

1. A manual opening and closing operating device for a circuit breaker, characterized in that: It comprises a handle (1), a support plate (2), an electromagnet mechanism (3) and a connecting block (4); The handle (1) comprises a handle body (11), a switch-opening support rod (12), a switch-closing support rod (13), a support portion (14) and a groove (15); The handle (11) comprises an opening working section, a closing working section, and a connecting section connecting the opening working section and the closing working section; The opening gate support rod (12) is fixedly arranged at the outer end of the opening gate working section, and the groove (15) is opened in the middle of the opening gate working section; The closing support rod (13) is fixedly arranged in the middle of the closing working section, and the support portion (14) is arranged at the outer end of the closing working section; The electromagnet mechanism (3) comprises a moving iron core (32), a static iron core (33) and a moving iron core tail rod (31); One end of the moving iron core (32) is fixedly connected to one end of the moving iron core tail rod (31), and the other end of the moving iron core (32) is fixedly connected to the connecting block (4), and the connecting block (4) is connected to the opening and closing mechanism of the circuit breaker; The other end of the movable iron core tail rod (31) passes through the static iron core (33) and the support plate (2), and a circular hole matching the size of the closing support rod (13) is provided on the movable iron core tail rod (31) at this end; The support plate (2) is further provided with a positioning portion (21), and the positioning portion (21) is provided with a circular hole that matches the size of the opening gate support rod (12).

2. The manual opening and closing operating device of the circuit breaker according to claim 1, characterized in that: The opening working section and the connecting section of the handle body (11) are perpendicular to each other, and the transition area between the opening working section and the connecting section is arc-shaped; the closing working section and the connecting section of the handle body (11) are perpendicular to each other, and the transition area between the closing working section and the connecting section is arc-shaped.

3. The manual opening and closing operating device of the circuit breaker according to claim 1, characterized in that: The support portion (14) is a support wheel, and the support wheel is rotatably mounted on the outer end of the closing working section via a rotating shaft.

4. The manual opening and closing operating device of the circuit breaker according to claim 1, characterized in that: The electromagnet mechanism (3) further comprises a spring (34), the spring (34) being sleeved on the tail rod (31) of the movable iron core, and the two ends of the spring (34) being respectively limited by the movable iron core (32) and the static iron core (33).

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