CN218975375U

CN218975375U - Operating mechanism of circuit breaker

Info

Publication number: CN218975375U
Application number: CN202320048236.7U
Authority: CN
Inventors: 郑海舟; 赵永和
Original assignee: Zhejiang Juli Electrical Co ltd
Current assignee: Zhejiang Juli Electrical Co ltd
Priority date: 2023-01-06
Filing date: 2023-01-06
Publication date: 2023-05-05
Anticipated expiration: 2033-01-06

Abstract

The utility model provides an operating mechanism of a circuit breaker, which comprises a side plate, an energy storage driving structure, a closing pinch plate and a blocking structure, wherein an operating shaft for controlling opening and closing is arranged on the side plate, the blocking structure is provided with a transmission assembly driven by the operating shaft and a rotating shaft driven by the transmission assembly and rotatably arranged on the side plate, a slot through which a stop block can pass is arranged on the rotating shaft, when the circuit breaker is in a closing position, the rotating shaft is driven by the transmission assembly to rotate clockwise, a second extension part of the closing pinch plate abuts against a cam, and the stop block abuts against the top of the rotating shaft, so that the situation that the operating mechanism is closed again due to misoperation of a worker when the circuit breaker is in the closing position, and damage is caused to the circuit breaker is avoided.

Description

Operating mechanism of circuit breaker

Technical Field

The utility model relates to the technical field of switching devices, in particular to an operating mechanism of a circuit breaker.

Background

A circuit breaker refers to a switching device capable of closing, carrying and breaking current under normal loop conditions. The circuit breaker can be used for distributing electric energy, the asynchronous motor is not frequently started, the power supply circuit, the motor and the like are protected, and the circuit can be automatically cut off when serious overload or short circuit, undervoltage and other faults occur.

The circuit breaker generally comprises an operating mechanism, wherein the operating mechanism is used for enabling the circuit breaker to be switched on and enabling the circuit breaker to be maintained in a stable switching-on state, and can rapidly enable the circuit breaker to be switched off.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is to overcome the defect of reclosing of the circuit breaker during the switching-on in the prior art, so as to provide an operating mechanism of the circuit breaker for preventing reclosing.

The utility model provides an operating mechanism of a circuit breaker, which comprises a side plate, an energy storage driving structure, a closing buckle plate and a blocking structure, wherein an operating shaft for controlling opening and closing is arranged on the side plate; the energy storage driving structure comprises an energy storage shaft and a cam sleeved on the energy storage shaft, wherein the cam can prop against the first extension part and drive the first extension part to rotate to a closing position, and the energy storage shaft is also provided with an energy storage spring and a driving mechanism for driving the energy storage spring to store energy; the closing buckle plate is arranged on the side plate and driven by a release arranged on the side plate, the closing buckle plate is provided with a second extension part and a stop block, and the second extension part can be propped against the cam; the blocking structure is provided with a transmission assembly driven by the operation shaft and a rotating shaft which is driven by the transmission assembly and is rotatably arranged on the side plate, a slot through which the stop block can pass is arranged on the rotating shaft, when the blocking structure is in a closing position, the rotating shaft is driven by the transmission assembly to rotate clockwise, the second extension part of the closing buckle plate is propped against the cam, and the stop block is propped against the top of the rotating shaft; when the rotary shaft is in the opening position, the rotary shaft is driven by the transmission assembly to rotate anticlockwise, the stop block can pass through the slot, and the second extension part can be separated from the cam.

The transmission assembly comprises a crank arm which is driven by the operation shaft and rotatably arranged on the side plate, and a connecting rod which is connected with the lower end of the crank arm, and one end of the connecting rod, which is far away from the crank arm, is connected with the rotating shaft.

The connecting piece which can be connected with the connecting rod is sleeved on the rotating shaft and fixedly connected with the connecting rod through the inserting structure.

The plug-in structure comprises a jack arranged on the connecting piece and a plug block arranged on the connecting rod and capable of being in adaptive plug-in connection with the jack.

The connecting piece is further provided with a third extending part extending outwards, two limiting columns used for limiting the rotating angle of the connecting piece are arranged on the side plates, the two limiting columns are located on two sides of the third extending part, and the limiting columns can be propped against the third extending part.

The crank arm is provided with a shaft pin, and the shaft sleeve is provided with a fourth extension part which can prop against the shaft pin and drive the crank arm to rotate.

And a bearing is sleeved on the shaft pin.

The driving mechanism comprises a motor arranged on the side plate, a first gear arranged on the motor and a second gear arranged on the energy storage shaft, and the first gear and the second gear are connected through a chain.

The technical scheme of the utility model has the following advantages:

1. the utility model provides an operating mechanism of a circuit breaker, which comprises a side plate, an energy storage driving structure, a closing buckle plate and a blocking structure, wherein an operating shaft for controlling opening and closing is arranged on the side plate, the blocking structure is provided with a transmission assembly driven by the operating shaft and a rotating shaft driven by the transmission assembly and rotatably arranged on the side plate, a slot through which a stop block can pass is arranged on the rotating shaft, when the circuit breaker is in a closing position, the rotating shaft is driven by the transmission assembly to rotate clockwise, a second extension part of the closing buckle plate abuts against a cam, and the stop block abuts against the top of the rotating shaft, so that misoperation of a worker when the circuit breaker is in the closing position can be prevented, the operating mechanism is closed again, and damage to the circuit breaker is caused.

2. The operating mechanism of the circuit breaker provided by the utility model has the advantages that the plug structure comprises the jack arranged on the connecting piece and the plug block arranged on the connecting rod and capable of being matched and plugged with the jack, the plug structure can enable the assembly between the connecting rod and the connecting piece to be faster and more convenient, and the plug block and the jack which are matched and connected have the advantage of simple structure.

3. The operating mechanism of the circuit breaker provided by the utility model is characterized in that the connecting piece is further provided with the third extending part which extends outwards, the side plate is provided with the two limiting posts which are used for limiting the rotating angle of the connecting piece, the two limiting posts are positioned at two sides of the third extending part, the limiting posts can prop against the third extending part, the limiting posts can enable the rotating shaft to accurately rotate to a closing position and a separating brake position, and the limiting posts have the advantage of simple structure.

4. According to the operating mechanism of the circuit breaker, the first bearing is sleeved on the shaft pin, so that abrasion between the shaft pin and the fourth extension part can be reduced.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a perspective view of an operating mechanism of a circuit breaker of the present utility model;

FIG. 2 is a perspective view of FIG. 1 with the energy storage spring removed;

FIG. 3 is an enlarged schematic view of a portion of the structure of FIG. 2;

FIG. 4 is a perspective view of the side panel of FIG. 2 from another perspective;

fig. 5 is an enlarged schematic view of the structure of the portion a in fig. 4.

Reference numerals illustrate: 1. a side plate; 11. a limit column; 2. an operation shaft; 21. a shaft sleeve; 22. a first extension; 23. a fourth extension; 31. an energy storage shaft; 32. a cam; 33. an energy storage spring; 34. a second gear; 4. closing buckle plate; 41. a second extension; 42. a stop block; 5. a trip; 6. a rotating shaft; 61. a slot; 71. a crank arm; 72. a connecting rod; 73. inserting blocks; 74. a shaft pin; 75. a bearing; 8. a connecting piece; 81. a jack; 82. a third extension; 91. a motor; 92. a first gear; 93. and (3) a chain.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Examples

The embodiment provides an operating mechanism of a circuit breaker, as shown in fig. 1, which comprises a side plate 1, an energy storage driving structure, a closing buckle plate 4 and a blocking structure.

The side plate 1 is provided with an operation shaft 2 for controlling opening and closing, as shown in fig. 1, 2, 4 and 5, the side plate 1 is provided with an energy storage driving structure for driving the operation shaft 2 to close on one side of the operation shaft 2, the operation shaft 2 is sleeved with a shaft sleeve 21, the shaft sleeve 21 is provided with a first extending part 22 extending outwards, the shaft sleeve 21 is provided with a fourth extending part 23, and the side plate 1 is provided with two limiting columns 11 for limiting the rotation angle of the connecting piece 8.

The energy storage driving structure, as shown in fig. 1, 2 and 4, comprises an energy storage shaft 31 and a cam 32 sleeved on the energy storage shaft 31, wherein the cam 32 can prop against the first extension part 22 and drive the first extension part 22 to rotate to a closing position, the energy storage shaft 31 is also provided with an energy storage spring 33 and a driving mechanism for driving the energy storage spring 33 to store energy, the driving mechanism comprises a motor 91 arranged on the side plate 1, a first gear 92 respectively arranged on the motor 91 and a second gear 34 respectively arranged on the energy storage shaft 31, and the first gear 92 and the second gear 34 are connected through a chain 93.

The closing buckle 4 is arranged on the side plate 1 as shown in fig. 1-3 and is driven by a release 5 arranged on the side plate 1, the closing buckle 4 is provided with a second extension part 41 and a stop block 42, and the second extension part 41 can be abutted against the cam 32.

1-5, a blocking structure is provided with a transmission assembly driven by the operation shaft and a rotating shaft 6 driven by the transmission assembly and rotatably arranged on the side plate 1, a slot 61 through which the stop block 42 can pass is arranged on the rotating shaft 6, when the blocking structure is in a closing position, the rotating shaft 6 is driven by the transmission assembly to rotate clockwise, the second extension part 41 of the closing buckle plate 4 is propped against the cam 32, and the stop block 42 is propped against the top of the rotating shaft 6; when the rotary shaft 6 is in the opening position, the rotation shaft 6 is driven to rotate anticlockwise by a transmission assembly, the stop block 42 can pass through the slot 61, the second extension part 41 can be separated from the cam 32, the transmission assembly comprises a crank arm 71 which is driven by the operation shaft 2 and is rotatably installed on the side plate 1, and a connecting rod 72 which is connected with the lower end of the crank arm 71, one end of the connecting rod 72, which is far away from the crank arm 71, is connected with the rotation shaft 6, a connecting piece 8 which can be connected with the connecting rod 72 is sleeved on the rotation shaft 6, the connecting piece 8 is fixedly connected with the connecting rod 72 through a plug structure, the plug structure comprises a jack 81 which is arranged on the connecting piece 8, and a plug block 73 which is arranged on the connecting rod 72 and can be matched and plugged with the jack 81, a third extension part 82 which extends outwards is positioned between two limiting posts 11, the third extension part 82 can be propped against the crank arm 11, and the fourth extension part 74 is provided with a shaft pin 74 which can extend with a shaft pin 74.

The utility model provides an operating mechanism of a circuit breaker, which comprises a side plate 1, an energy storage driving structure, a closing pinch plate 4 and a blocking structure, wherein an operating shaft 2 for controlling opening and closing is arranged on the side plate 1, the blocking structure is provided with a transmission component driven by the operating shaft 2 and a rotating shaft 6 driven by the transmission component and rotatably arranged on the side plate 1, a slot 61 through which a stop block 42 can pass is arranged on the rotating shaft 6, when the circuit breaker is in a closing position, the rotating shaft 6 is driven by the transmission component to rotate clockwise, a second extension part 41 of the closing pinch plate 4 abuts against a cam 32, the stop block 42 abuts against the top of the rotating shaft 6, thus, when the circuit breaker is in the closing position, misoperation of a worker can be prevented, so that the operating mechanism is closed again, and the circuit breaker is damaged, the service life of the circuit breaker is greatly prolonged, and the damage is reduced.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims

1. An operating mechanism for a circuit breaker, comprising:

the side plate (1) is provided with an operation shaft (2) for controlling opening and closing, an energy storage driving structure for driving the operation shaft (2) to close is arranged on one side of the operation shaft (2) on the side plate (1), a shaft sleeve (21) is sleeved on the operation shaft (2), and the shaft sleeve (21) is provided with a first extension part (22) extending outwards;

the energy storage driving structure comprises an energy storage shaft (31) and a cam (32) sleeved on the energy storage shaft (31), wherein the cam (32) can prop against the first extension part (22) and drive the first extension part (22) to rotate to a closing position, and the energy storage shaft (31) is also provided with an energy storage spring (33) and a driving mechanism for driving the energy storage spring (33) to store energy;

a closing buckle plate (4) arranged on the side plate (1) and driven by a release (5) arranged on the side plate (1), wherein the closing buckle plate (4) is provided with a second extension part (41) and a stop block (42), and the second extension part (41) can be propped against the cam (32);

the blocking structure is provided with a transmission assembly driven by the operation shaft and a rotating shaft (6) which is driven by the transmission assembly and is rotatably arranged on the side plate (1), a slot (61) through which the stop block (42) can pass is arranged on the rotating shaft (6), when the blocking structure is in a closing position, the rotating shaft (6) is driven by the transmission assembly to rotate clockwise, the second extension part (41) of the closing buckle plate (4) is propped against the cam (32), and the stop block (42) is propped against the top of the rotating shaft (6); when the rotary shaft (6) is in the opening position, the rotary shaft is driven by the transmission assembly to rotate anticlockwise, the stop block (42) can pass through the slot (61), and the second extension part (41) can be separated from the cam (32).

2. Operating mechanism of a circuit breaker according to claim 1, characterized in that the transmission assembly comprises a lever (71) rotatably mounted on the side plate (1) driven by the operating shaft (2), and a connecting rod (72) connected to the lower end of the lever (71), the end of the connecting rod (72) remote from the lever (71) being connected to the rotation shaft (6).

3. The operating mechanism of the circuit breaker according to claim 2, characterized in that a connecting piece (8) capable of being connected with the connecting rod (72) is sleeved on the rotating shaft (6), and the connecting piece (8) is fixedly connected with the connecting rod (72) through a plug-in structure.

4. A circuit breaker operating mechanism according to claim 3, characterized in that the plug-in structure comprises a socket (81) provided on the connecting piece (8), and a plug block (73) provided on the connecting rod (72) which can be plugged in an adapted manner with the socket (81).

5. The operating mechanism of the circuit breaker according to claim 4, wherein the connecting piece (8) is further provided with a third extending portion (82) extending outwards, two limiting posts (11) for limiting the rotation angle of the connecting piece (8) are arranged on the side plate (1), the two limiting posts (11) are located on two sides of the third extending portion (82), and the limiting posts (11) can abut against the third extending portion (82).

6. The operating mechanism of the circuit breaker according to claim 2, characterized in that the crank arm (71) is provided with a shaft pin (74), and the shaft sleeve (21) is provided with a fourth extension part (23) which can be abutted against the shaft pin (74) and drive the crank arm (71) to rotate.

7. The operating mechanism of the circuit breaker according to claim 6, characterized in that the shaft pin (74) is sleeved with a bearing (75).

8. The operating mechanism of a circuit breaker according to claim 1, characterized in that the driving mechanism comprises a motor (91) arranged on the side plate (1), and a first gear (92) and a second gear (34) respectively arranged on the motor (91) and the energy storage shaft (31), wherein the first gear (92) and the second gear (34) are connected through a chain (93).