CN212695040U

CN212695040U - Circuit breaker interlocking mechanism for preventing closing

Info

Publication number: CN212695040U
Application number: CN202021738528.6U
Authority: CN
Inventors: 赵菊芬; 罗鑫荣
Original assignee: Fujian Dpl Energy Technology Co ltd
Current assignee: Fujian Dpl Energy Technology Co ltd
Priority date: 2020-08-19
Filing date: 2020-08-19
Publication date: 2021-03-12
Anticipated expiration: 2030-08-19

Abstract

The utility model relates to a circuit breaker prevents combined floodgate interlocking device, including interlocking handle, interlocking assembly axle, interlocking turning arm and interlocking board. The interlocking assembly shaft penetrates through a panel of the operating device and is rotatably assembled on the panel. The interlocking crank arm and the interlocking handle are respectively assembled at two ends of the interlocking assembly shaft, which are positioned at two sides of the panel. The interlocking plate is additionally provided with a limiting post and a guide groove, the limiting post is arranged on the side surface of the interlocking plate facing to the interlocking crank arm, and the guide groove extends along the length direction of the interlocking plate and penetrates through the interlocking plate. The interlocking assembly shaft is arranged by penetrating the interlocking plate through the guide groove. One end of the interlocking plate in the length direction is provided with the limiting column. The middle part of the interlocking connecting lever is assembled on the interlocking assembly shaft, and one end of the interlocking connecting lever, which is adjacent to the position of the limiting column, is a limiting end of the interlocking connecting lever. The utility model discloses an interlocking plate and control handle linkage, the structure is scientific more portably, and is used for the structural strength who restricts control handle and removes higher.

Description

Circuit breaker interlocking mechanism for preventing closing

Technical Field

The utility model relates to a high-voltage electrical switchgear field, concretely relates to circuit breaker prevents combined floodgate interlocking device.

Background

The outdoor pole-mounted vacuum circuit breaker is an important switch element of a power grid overhead line and plays a role in protecting and controlling the power grid line. The vacuum circuit breaker is famous for the fact that arc extinguishing media and insulating media in contact gaps after arc extinguishing are high vacuum, has the advantages of being small in size, light in weight, suitable for frequent operation and free of maintenance for arc extinguishing, and is popularized to be applied to power distribution networks. Generally, a vacuum circuit breaker locks a control handle of an operating device of the vacuum circuit breaker through a circuit breaker closing prevention interlocking mechanism, so that closing accidents caused by accidents such as mistaken touch and the like under the condition that the vacuum circuit breaker cannot be closed, such as the condition of closing with a ground wire and the like, are avoided.

The existing circuit breaker closing prevention interlocking mechanism is like a closing locking device disclosed in a Chinese invention patent with an authorized bulletin number of CN105185619B, a control handle and the like are limited through a plurality of structures arranged outside, and the structure is complex and is easy to age and break down; the locking device for limiting the switch operation, which is disclosed in the Chinese invention patent with the grant publication number of CN102368448B, directly limits the assembling shaft of the control handle, has high requirement on assembling precision and small moment for limiting the switch-on. When the moment for limiting closing is small and false closing occurs, the locking device for limiting the operation of the switch is impacted, so that the problems of locking failure, impact damage to the locking device and the like are easily caused.

Disclosure of Invention

The utility model provides a circuit breaker prevents combined floodgate interlocking device to solve above-mentioned problem.

The utility model adopts the following technical scheme:

an interlocking mechanism for preventing a circuit breaker from being switched on comprises an interlocking handle, an interlocking assembly shaft, an interlocking crank arm and an interlocking plate, wherein the interlocking handle can be arranged in a fixed-shaft rotating mode. When the control handle is in the opening state, the interlocking handle is operated to limit the movement of the control handle towards the closing state or remove the limitation. The control handle is used for manually controlling switching-on and switching-off in an operating device for operating the on-off of the circuit breaker. The interlocking assembly shaft penetrates through a panel of the operating device and is rotatably assembled on the panel. The interlocking crank arm and the interlocking handle are respectively assembled at two ends of the interlocking assembly shaft, which are positioned at two sides of the panel. The interlocking handle and the interlocking crank arm are synchronously rotated. The interlocking plate is arranged on one side of the panel facing the interlocking crank arm. The interlocking plate is additionally provided with a limiting post and a guide groove, the limiting post is arranged on the side surface of the interlocking plate facing to the interlocking crank arm, and the guide groove extends along the length direction of the interlocking plate and penetrates through the interlocking plate. The interlocking assembly shaft is arranged by penetrating the interlocking plate through the guide groove. One end of the interlocking plate in the length direction is provided with the limiting column, and the other end of the interlocking plate is used for being in linkage arrangement with the control handle. The middle part of the interlocking connecting lever is assembled on the interlocking assembly shaft, and one end of the interlocking connecting lever, which is adjacent to the position of the limiting column, is a limiting end of the interlocking connecting lever. When the control handle is in a switching-off state and the interlocking handle is in a state of limiting the control handle to move towards the switching-on state, the limiting end is positioned on one side of the limiting column adjacent to the guide groove and is arranged adjacent to the limiting column.

From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages:

the utility model discloses an interlocking board and brake valve lever linkage, when brake valve lever is in the state of separating brake state and interlocking handle is in the state of restriction brake valve lever toward the ascending removal of combined floodgate state side, structure through spacing end restriction spacing post, the cooperation is located the interlocking assembly axle of guide way, the removal ground of two dimension restriction interlocking boards restriction brake valve lever rotation indirectly, the structure is more simple and convenient science, and the structural strength who is used for restricting the brake valve lever and removes is higher, even receive the great mistake combined floodgate impact of strength, also can guarantee that this restriction can not be relieved and guarantee that this structure is difficult for being damaged.

The structure can also be seen that the structure has lower requirements on assembly precision, the circuit breaker switching-on prevention interlocking mechanism is more convenient and faster to disassemble and maintain, and the circuit breaker switching-on prevention interlocking mechanism has better stability.

Further:

the control handle is additionally provided with a control assembly shaft and a control crank arm, the control assembly shaft penetrates through the panel, the control assembly shaft is rotatably assembled on the panel, the control handle and the control crank arm are respectively assembled at two ends of the control assembly shaft, which are positioned at two sides of the panel, the control handle and the control crank arm are synchronously and rotatably arranged, and the control handle and the interlocking handle are positioned at the same side of the panel. The interlocking plate is used for being pivoted to the end part of the control crank arm at the end part linked with the control handle.

The interlocking plate is arranged between the interlocking crank arm and the panel. The interlocking assembly shaft is arranged in the guide groove, and the outer diameter of the shaft body in the guide groove is matched with the width of the guide groove.

The interlocking crank arm is of a T-shaped flat structure, the T shape in the T-shaped flat structure is formed by extending two sides of the limiting end along the width direction of the interlocking crank arm, and the end face of the limiting end is arranged in an arc surface.

The circuit breaker interlocking mechanism for preventing switching-on further comprises an upper limiting pin and a lower limiting pin, wherein the upper limiting pin and the lower limiting pin are arranged on the side face, facing the interlocking connecting lever, of the panel, the upper limiting pin and the lower limiting pin are respectively located on two sides of the limiting end in the moving direction, and the upper limiting pin and the lower limiting pin are used for limiting the rotating range of the interlocking connecting lever.

The interlocking mechanism for preventing the circuit breaker from being switched on further comprises an interlocking tension spring and two tension spring hanging pins, the two tension spring hanging pins are respectively arranged on the side face, facing the position of the interlocking crank arm, of the panel and the other end, opposite to the limiting end, of the interlocking crank arm in the length direction, and the two ends of the interlocking tension spring are hung on the two tension spring hanging pins. When the interlocking crank arm moves to the middle of the rotating section, the two tension spring hanging pins are both positioned in the length direction of the interlocking crank arm.

one of them, the utility model discloses a press from both sides the interlocking board and locate between interlocking turning arm and the panel, cooperate the structure that the interlocking assembly axle runs through the guide way again, simplify the assembly structure of interlocking board and promote the assembly stability of interlocking board simultaneously, the structure is scientific and reasonable more.

Two, the utility model discloses a set the interlocking turning arm into T style of calligraphy structure, the circular-arc structure is personally submitted to the spacing end terminal of cooperation, rotate to being used for limiting control handle this in-process that closes a floodgate at the interlocking handle, this spacing end terminal surface can be through the arc surface contact on the outer edge of arc surface and spacing post circumference, and then the taut interlocking plate of roof pressure, help promoting this interlocking handle and control the smooth degree of process, and help interlocking turning arm to the stability of interlocking plate roof pressure when the interlocking handle removes to the state that is used for limiting control handle to close a floodgate, and then help promoting the circuit breaker and prevent closing a floodgate interlocking mechanism job stabilization nature.

Thirdly, the utility model discloses go up spacer pin and the rotation interval of lower spacer pin matched with limited interlocking turning arm, the structure sets up conveniently and sets up with low costsly. And the structure of interlocking connecting lever is limited by limiting the limit end, and the limit of the interlocking connecting lever is realized by combining and utilizing the limit end structure while the effect of the two is ensured, so that the utilization efficiency of the structure is improved, and the structure setting of the circuit breaker for preventing the closing interlocking mechanism is simplified.

It is fourth, the utility model discloses a setting of round pin is hung to interlocking extension spring and complex extension spring makes the interlocking connecting lever when the position of one in spacing pin and the lower spacing pin of neighbouring goes up moves towards neighbouring another position, all will experience earlier tensile interlocking extension spring then makes the process that interlocking extension spring resets, no matter interlock handle is in which state promptly, its motion towards another state all need overcome certain resistance, and then has avoided the mistake of the interlocking handle that the condition such as mistake touched caused to remove. And the structure ensures that the interlocking handle enters a working position by overcoming the tensile resistance of the interlocking tension spring in the operation process of the interlocking handle and then the assistance brought by the resetting of the interlocking tension spring, namely the process is more in line with the expectation of an operator, and the operation texture is better.

Drawings

Fig. 1 is the utility model discloses a circuit breaker prevents closing interlocking device's structural schematic.

Fig. 2 is the utility model discloses a circuit breaker prevents that closing a floodgate interlocking device uses to and control handle linkage back and control handle is in the front view structure schematic under the state of can closing a floodgate.

Fig. 3 is the utility model discloses a circuit breaker prevents that closing a floodgate interlocking device uses to and control handle linkage back and control handle is in the front view structure schematic under the restriction combined floodgate state.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

Referring to fig. 1, 2 and 3, the interlocking mechanism for preventing the circuit breaker from being switched on comprises an interlocking handle 1, an interlocking assembly shaft 2, an interlocking crank arm 3, an interlocking plate 4, an upper limit pin 5, a lower limit pin 6, an interlocking tension spring 7 and two tension spring hanging pins 8, wherein the interlocking handle 1 can be arranged in a fixed-shaft rotating mode. When the control handle 91 is in the open state, the interlock handle 1 is operated to restrict the movement of the control handle 91 in the direction of the closed state or to release the restriction. The control handle 91 is a control handle 91 for manually controlling switching on and off in an operating device for operating the on and off of the circuit breaker. The interlock mounting shaft 2 penetrates the operating device panel 90 and the interlock mounting shaft 2 is rotatably mounted to the panel 90. The interlocking crank arm 3 and the interlocking handle 1 are respectively assembled at two ends of the interlocking assembly shaft 2 which are positioned at two sides of the panel 90. The interlocking handle 1 and the interlocking crank arm 3 are synchronously and rotatably arranged. The control handle 91 is provided with a control assembly shaft 92 and a control crank arm 93, the control assembly shaft 92 penetrates through the panel 90, the control assembly shaft 92 is rotatably assembled on the panel 90, the control handle 91 and the control crank arm 93 are respectively assembled at two ends of the control assembly shaft 92, which are positioned at two sides of the panel 90, and the control handle 91 and the control crank arm 93 are synchronously and rotatably arranged. The control handle 91 and the interlock handle 1 are arranged on the same side of the panel 90, that is, the control handle 91 and the interlock handle 1 are arranged outside the panel 90, other corresponding structures are arranged inside the operating device, and the control crank arm 93 is correspondingly connected with the relevant structures of the operating device. The utility model discloses only relate to this circuit breaker and prevent combined floodgate interlocking device, specifically only relate to this control and press handle, control turning arm 93 isotructure, no longer describe here to other structures of operating device again. The cloud pattern in fig. 2 and 3 is a local identification of the panel 90 for facilitating identification of the mounting structure associated with the panel 90.

Referring to fig. 1, the interlocking plate 4 is disposed on a side of the face plate 90 facing the interlocking crank arm 3. Specifically, the interlock plate 4 is provided between the interlock crank arm 3 and the face plate 90. The interlock plate 4 is additionally provided with a stopper pin 41 and a guide groove 42, the stopper pin 41 is provided on a side surface of the interlock plate 4 facing the position of the interlock crank arm 3, and the guide groove 42 extends in the longitudinal direction of the interlock plate 4 and penetrates the interlock plate 4. The interlock shaft 2 is inserted into the interlock plate 4 through the guide groove 42. The interlocking shaft 2 is arranged in the guide groove 42 such that the outer diameter of the shaft body is matched with the width of the guide groove 42. The limit post 41 is disposed at one end of the interlocking plate 4 in the length direction, the other end of the interlocking plate 4 is used for being interlocked with the control handle 91, and the interlocking plate is interlocked with the control handle 91, specifically, the end of the other end of the interlocking plate 4 is pivoted to the end of the control crank arm 93. The middle part of the interlocking crank arm 3 is assembled on the interlocking assembly shaft 2, and one end of the interlocking crank arm 3 adjacent to the position of the limiting column 41 is a limiting end 31. When the control handle 91 is in the open state and the interlock handle 1 is in the state of restricting the movement of the control handle 91 in the direction of the closed state, the above-mentioned stopper end 31 is located on the side of the stopper post 41 adjacent to the guide groove 42 and is disposed adjacent to the stopper post 41.

Referring to fig. 1, 2, and 3, the interlocking crank arm 3 has a T-shaped flat plate structure in which a T-shape is formed by extending both sides of the stopper end 31 in the width direction of the interlocking crank arm 3, and the end surface of the stopper end 31 is formed in an arc surface. The arc surface is an arc-shaped structure with two ends bent towards the position of the interlocking crank arm 3 main body. The upper limit pin 5 and the lower limit pin 6 are both disposed on a side surface of the panel 90 facing the position of the interlocking crank arm 3, the upper limit pin 5 and the lower limit pin 6 are respectively disposed on two sides of the limit end 31 in the moving direction, and the upper limit pin 5 and the lower limit pin 6 are used for limiting the rotation section of the interlocking crank arm 3. The two tension spring hanging pins 8 are respectively arranged on the side surface of the panel 90 facing to the position of the interlocking crank arm 3 and the other end of the interlocking crank arm 3 opposite to the limiting end 31 in the length direction, and the two ends of the interlocking tension spring 7 are hung on the two tension spring hanging pins 8. When the interlocking crank arm 3 moves to the middle of the rotating section, the two tension spring hanging pins 8 are both positioned in the length direction of the interlocking crank arm 3.

With continuing reference to fig. 1, 2, and 3, the usage of the circuit breaker closing prevention interlocking mechanism is as follows:

when the control handle 91 is in the opening state, the control crank arm 93 correspondingly pushes the interlocking plate 4 to move to the side of the limiting end 31 facing the upper limiting pin 5. The interlocking plate 4 is restricted in its moving path by the structure of the interlocking fitting shaft 2 penetrating the guide groove 42 by the control crank arm 93. At this time, the stopper end 31 is laterally abutted against the lower stopper pin 6. I.e. the state shown in fig. 2.

In this state, the interlock lever 1 is pulled to move the interlock lever 3 until the other side surface of the stopper end 31 abuts on the upper stopper pin 5. In this process, the arc-shaped end surface of the stopper end 31 is movably pressed against the circumferential side surface of the stopper post 41 to gradually fix the stopper post 41. In the process, the interlocking tension spring 7 is stressed and deforms firstly until the central axis of the interlocking crank arm 3 in the length direction crosses the tension spring hanging pin 8 on the panel 90, at the moment, the interlocking tension spring 7 continuously lifted up and pulled up the interlocking handle 1 gradually deforms and recovers, namely, in the process, the interlocking tension spring 7 provides certain power until the deformation of the interlocking tension spring is completely recovered, namely, the limiting end 31 is adjacent to the upper limiting pin 5. In this state, when the control lever 91 is rotated in the closing direction, the control lever 93 tends to rotate about the control mounting shaft 92, but its end is fixed to the interlock plate 4, that is, it is necessary to pull the interlock plate 4 to rotate the control lever. The stopper 41 of the interlock plate 4 is pressed by the end face of the stopper end 31 and cannot move, that is, the control lever 93 cannot rotate, and accordingly, the control lever 91 cannot rotate in the closing direction. I.e. the state shown in fig. 3.

In the above state, the interlock handle 1 is pulled in the direction opposite to the above pulling direction, and is also subjected to the deformation of the interlock tension spring 7 and then the recovery process until the stopper end 31 abuts against the lower stopper pin 6. In this state, when the control handle 91 is rotated in the closing direction, the control connecting lever 93 is rotated around the control assembling shaft 92 as an axis, the interlocking plate 4 is pulled by the control connecting lever 93 through the pivot joint with the interlocking plate 4, and at this time, since the limit end 31 is separated from the limit post 41, the interlocking plate 4 and the interlocking assembling shaft 2 relatively move through the guide groove 42, and then the closing of the operation device is realized. In this state, even if the interlock handle 1 is pulled, the stopper post 41 moves to the side surface of the interlock lever 3 along with the interlock plate 4, and the stopper post 41 prevents the interlock lever 3 from moving toward the upper stopper pin 5, thereby preventing erroneous operation of the interlock handle 1.

The above-mentioned be the utility model discloses a concrete implementation way, nevertheless the utility model discloses a design concept is not limited to this, and the ordinary use of this design is right the utility model discloses carry out immaterial change, all should belong to the act of infringement the protection scope of the utility model.

Claims

1. An interlocking mechanism for preventing a circuit breaker from being switched on comprises an interlocking handle, wherein the interlocking handle can be arranged in a fixed-shaft rotating mode; when the control handle is in a switching-off state, the interlocking handle is operated to limit the control handle to move towards the direction of a switching-on state or remove the limitation; the control handle is used for manually controlling switching-on and switching-off in an operating device for operating the on-off of the breaker; the method is characterized in that: the interlocking device is characterized by further comprising an interlocking assembly shaft, an interlocking connecting lever and an interlocking plate, wherein the interlocking assembly shaft penetrates through a panel of the operating device, the interlocking assembly shaft is rotatably assembled on the panel, the interlocking connecting lever and the interlocking handle are respectively assembled at two ends of the interlocking assembly shaft, which are positioned at two sides of the panel, the interlocking handle and the interlocking connecting lever are synchronously and rotatably arranged, and the interlocking plate is positioned at one side, facing the interlocking connecting lever, of the panel; the interlocking plate is additionally provided with a limiting column and a guide groove, the limiting column is arranged on the side surface of the interlocking plate, which faces to the interlocking crank arm, and the guide groove extends along the length direction of the interlocking plate and penetrates through the interlocking plate; the interlocking assembly shaft is arranged by penetrating the interlocking plate through the guide groove; one end of the interlocking plate in the length direction is provided with the limiting column, and the other end of the interlocking plate is used for being in linkage arrangement with the control handle; the middle part of the interlocking connecting lever is assembled on the interlocking assembly shaft, and one end of the interlocking connecting lever, which is adjacent to the position of the limiting column, is a limiting end of the interlocking connecting lever; when the control handle is in a switching-off state and the interlocking handle is in a state of limiting the control handle to move towards the direction of a switching-on state, the limiting end is positioned on one side of the limiting column adjacent to the guide groove and is arranged adjacent to the limiting column.

2. The circuit breaker closing prevention interlocking mechanism as claimed in claim 1, wherein: the control handle is additionally provided with a control assembly shaft and a control crank arm, the control assembly shaft penetrates through the panel, the control assembly shaft is rotatably assembled on the panel, the control handle and the control crank arm are respectively assembled at two ends of the control assembly shaft, which are positioned at two sides of the panel, the control handle and the control crank arm are synchronously and rotatably arranged, and the control handle and the interlocking handle are positioned at the same side of the panel; the interlocking plate is used for being pivoted to the end part of the control crank arm with the end part linked with the control handle.

3. The circuit breaker closing prevention interlocking mechanism as claimed in claim 1, wherein: the interlocking plate is arranged between the interlocking crank arm and the panel; the interlocking assembly shaft is positioned in the guide groove, and the outer diameter of the shaft body in the guide groove is matched with the width of the guide groove.

4. The circuit breaker closing prevention interlocking mechanism as claimed in claim 1, wherein: the interlocking crank arm is of a T-shaped flat structure, the T shape in the T-shaped flat structure is formed by extending two sides of the limiting end along the width direction of the interlocking crank arm, and the end face of the limiting end is arranged in an arc surface.

5. The circuit breaker closing prevention interlocking mechanism as claimed in claim 4, wherein: the interlocking device is characterized by further comprising an upper limiting pin and a lower limiting pin, wherein the upper limiting pin and the lower limiting pin are both arranged on the side face, facing the interlocking connecting lever, of one side of the panel, the upper limiting pin and the lower limiting pin are respectively located on two sides of the limiting end in the moving direction, and the upper limiting pin and the lower limiting pin are used for limiting the rotating range of the interlocking connecting lever.

6. The circuit breaker closing prevention interlocking mechanism as claimed in claim 5, wherein: the interlocking device is characterized by further comprising an interlocking tension spring and two tension spring hanging pins, wherein the two tension spring hanging pins are respectively arranged on the side surface of the panel, facing the position of the interlocking crank arm, and the other end, opposite to the limiting end, of the interlocking crank arm in the length direction, and the two ends of the interlocking tension spring are hung on the two tension spring hanging pins; when the interlocking crank arm moves to the middle part of the rotating interval, the two tension spring hanging pins are both positioned in the length direction of the interlocking crank arm.