Manual switch switching-on and switching-off device of large-current circuit breaker

Abstract

The invention belongs to the technical field of circuit breakers, and particularly relates to a manual switch opening and closing device of a large-current circuit breaker. Comprising an insulating handle, an insulating holding rod is connected to the lower portion between two handle bodies of the insulating handle, supporting frames are connected to the left side and the right side of the upper portion of the insulating handle, and a clamping driving assembly is arranged in a frame body formed by the two supporting frames; the clamping driving assembly is connected with a clamping assembly, clamping plates are arranged on the clamping assembly, and the clamping driving assembly is used for driving the two clamping plates on the clamping assembly to move towards each other or away from each other; an insulating operating rod is arranged in the middle between the two insulating handles, the insulating operating rod is connected with the clamping driving assembly, and the insulating operating rod is used for operating the clamping driving assembly; the device can effectively assist a worker in operating the manual switch of the large-current circuit breaker, the working efficiency is improved, and the working safety is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of circuit breakers, and in particular relates to a manual switch opening and closing device for a large current circuit breaker. Background Art

[0002] High-current circuit breakers are mainly composed of a contact system, an arc extinguishing system, an operating mechanism, a release and an insulating casing. The contact is the part of the circuit breaker used to connect and disconnect the circuit. It is usually made of a material with good conductivity, and tungsten and silver may be added to increase arc resistance. The contact system is divided into a moving contact and a static contact. When the circuit breaker is disconnected, the moving contact separates from the static contact to cut off the current. During the contact breaking process, a high-temperature arc will be generated. The function of the arc extinguishing system is to quickly extinguish the arc to prevent the arc from damaging the contacts or forming a short circuit. Common arc extinguishing methods include lengthening the arc, cooling the arc, etc. The operating mechanism is used to control the closing and opening of the contacts. Depending on the type of circuit breaker, the operating mechanism may be different, but generally includes a transmission mechanism, an energy storage spring, etc., which is used to quickly close or open the circuit when needed; the release is a mechanism in the circuit breaker used to trigger the opening action. When overload, short circuit and other faults occur in the circuit , the release will sense abnormal current or voltage and trigger the operating mechanism to perform the tripping operation; the insulating shell is the main structure of the circuit breaker, which is responsible for fixing various mechanisms and providing insulation protection. It must be able to withstand various stresses and environmental conditions of the circuit breaker under normal working and fault conditions; high-current circuit breakers play a vital role in the power system. When the circuit is overloaded, short-circuited or other faults occur, the high-current circuit breaker can quickly cut off the fault current to prevent electrical equipment from being damaged by excessive current shock, protect the safety of the equipment and extend its service life; by quickly cutting off the fault current, the high-current circuit breaker can reduce the scope and time of the fault on the circuit, thereby improving the reliability and stability of the entire circuit; when operating the manual switch of the high-current circuit breaker, if the operator directly operates it by hand, there are certain safety hazards, so it is very necessary to provide a manual switch separation and closing device for a high-current circuit breaker. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a large current circuit breaker manual switch opening and closing device to effectively assist workers in operating the large current circuit breaker manual switch, improve work efficiency, and ensure work safety.

[0004] The object of the present invention is achieved as follows: A manual switch opening and closing device for a large current circuit breaker comprises an insulating handle, wherein an insulating gripping rod is connected to the lower part between two handles of the insulating handle, and both left and right sides of the upper part of the insulating handle are connected to a supporting frame, and a clamping drive assembly is arranged inside a frame body composed of two supporting frames; The clamping drive assembly is connected to a clamping assembly, a clamping plate is provided on the clamping assembly, and the clamping drive assembly is used to drive the two clamping plates on the clamping assembly to move toward or away from each other; An insulating operating rod is provided in the middle between the two handles of the insulating handle, and the insulating operating rod is connected to the clamping drive assembly, and the insulating operating rod is used to operate the clamping drive assembly.

[0005] Furthermore, guide long grooves are provided on the inner sides of the two handles of the insulating handles, and guide plug plates are connected to both ends of the insulating operating rod. The guide plug plates extend into the guide long grooves and are slidably connected with the insulating handles; the insulating operating rod can be guided and limited by the guide long grooves to ensure its stability during movement.

[0006] Furthermore, a protective shell is connected between the front and rear sides of the two support frames, and the protective shell encloses the two support frames into one shell. The clamping drive assembly is arranged inside the protective shell; the clamping drive assembly can be separated from the outside by the protective shell.

[0007] Furthermore, mounting sockets are provided on the inner side surfaces of the lower parts of the two insulating handles, the ends of the insulating grip rods are connected to the mounting sockets, and the insulating grip rods are provided with anti-slip rubber sleeves; the installation of the mounting sockets facilitates the installation and removal of the insulating grip rods.

[0008] Furthermore, the support frame is U-shaped as a whole, and connection sockets are provided on the left and right sides of the upper part of the insulating handle. One end of the support frame is connected to the connection socket by plugging; the connection by plugging is convenient for assembly and disassembly of the device.

[0009] Furthermore, the clamping drive assembly includes a guide sleeve fixedly arranged on the upper part of the support frame, the guide sleeve is slidably connected with a clamping drive slide rod, one end of the clamping drive slide rod is connected to the clamping assembly; the clamping assembly can be driven by the movement of the clamping drive slide rod.

[0010] Furthermore, the clamping drive assembly includes an insulating push-pull cross bar, on which a transmission sleeve is slidably provided, and on which a first connecting rod and one end of a second connecting rod are rotatably connected, the other end of the first connecting rod is rotatably connected to the supporting frame, and the other end of the second connecting rod is rotatably connected to the clamping drive slide rod; the clamping drive slide rod can be driven to move by the up and down movement of the insulating push-pull cross bar and the transmission of the first connecting rod and the second connecting rod.

[0011] Furthermore, the clamping assembly includes a clamping bending rod, a guide through hole is provided on the top of the protective shell, the clamping bending rod passes through the guide through hole and its end is connected to the clamping plate; the guide through hole can be used to guide and limit the clamping bending rod when it moves.

[0012] Furthermore, it also includes a scale display component, which includes a scale display panel arranged on the protective shell, a scale pointing bent rod is connected to the clamping bending rod, and a scale pointing head is connected to the end of the scale pointing bent rod.

[0013] Furthermore, an insulating guide tube is provided in the middle part of the insulating handle, and the insulating guide tube is slidably connected with an insulating push-pull vertical rod, one end of the insulating push-pull vertical rod is connected to the insulating push-pull horizontal rod, and the other end is connected to the insulating operating rod; the end of the insulating operating rod is connected to one end of a tension spring, and the other end of the tension spring is connected to the insulating handle; by pulling the insulating operating rod, the two clamping plates can be moved back to back through the transmission of the first connecting rod, the second connecting rod and the clamping drive sliding rod; after releasing the insulating operating rod, the two clamping plates are moved toward each other under the action of the tension of the tension spring.

[0014] Beneficial effects of the present invention: In a manual switch opening and closing device for a large current circuit breaker of the present invention, the clamping drive assembly is connected to a clamping assembly, and a clamping plate is provided on the clamping assembly, and the two clamping plates on the clamping assembly can be driven by the clamping drive assembly to move toward or away from each other; an insulating operating rod is provided in the middle between the two handles of the insulating handle, and the insulating operating rod is connected to the clamping drive assembly, and the clamping drive assembly can be operated by the insulating operating rod. When using the circuit breaker manual switch separation and closing device of the present invention, the device can be held by the insulating gripping rod, the two clamping plates provided on the clamping assembly are aligned with the operating opening on the circuit breaker, and the insulating operating rod is pulled to drive the clamping drive assembly to drive the two clamping plates on the clamping assembly to move backwards, and when the distance between the two clamping plates is large enough, they are moved to both sides of the circuit breaker operating switch, and then the insulating operating rod is released. In the absence of external force, the clamping drive assembly drives the two clamping plates on the clamping assembly to move toward each other, clamping and fixing the circuit breaker operating switch, so as to facilitate the operation of the circuit breaker. The large current circuit breaker manual switch separation and closing device of the present invention has a reasonable structure and is easy to operate and use, and can effectively assist the staff to operate the large current circuit breaker manual switch, improve the working efficiency, and ensure the working safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 The present invention is a three-dimensional structural schematic diagram of a manual switch opening and closing device for a large current circuit breaker.

[0017] Figure 2 The present invention is a structural schematic diagram of a manual switch opening and closing device for a large current circuit breaker from the front.

[0018] Figure 3 The schematic diagram is a top view of the structure of a manual switch opening and closing device for a large current circuit breaker.

[0019] Figure 4 The present invention is a structural schematic diagram of a side view of a manual switch opening and closing device for a large current circuit breaker.

[0020] Figure 5 The diagram is a partial structural diagram of a manual switch opening and closing device for a large current circuit breaker.

[0021] Figure 6 The present invention is a structural schematic diagram of a scale-directed bent rod of a manual switch opening and closing device for a large current circuit breaker.

[0022] Figure 7 This is a schematic diagram of the internal structure of the front side of a manual switch opening and closing device for a large current circuit breaker.

[0023] Figure 8 The figure is a schematic diagram of the internal structure behind a manual switch opening and closing device of a large current circuit breaker. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that all directional indications in the embodiments of the present invention (such as up-down-left-right-front-back...) are only used to explain the relative position relationship - movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0028] like Figure 1-8 As shown, a manual switch opening and closing device for a large current circuit breaker of the present invention comprises an insulating handle 1, wherein the lower part between the two handles of the insulating handle 1 is connected to an insulating grip rod 2, and the left and right sides of the upper part of the insulating handle 1 are connected to support frames 24, and a clamping drive assembly 29 is arranged inside the frame body composed of the two support frames 24; The clamping drive assembly 29 is connected to the clamping assembly 6, and the clamping plate 16 is provided on the clamping assembly 6. The clamping drive assembly 29 is used to drive the two clamping plates 16 on the clamping assembly 6 to move toward or away from each other; An insulating operating rod 3 is provided in the middle between the two handles of the insulating handle 1 . The insulating operating rod 3 is connected to the clamping drive assembly 29 . The insulating operating rod 3 is used to operate the clamping drive assembly 29 .

[0029] When using the circuit breaker manual switch opening and closing device of the present invention, the device can be held by the insulating gripping rod 2, the two clamping plates 16 provided on the clamping assembly 6 are aligned with the operating start on the circuit breaker, and the insulating operating rod 3 is pulled to drive the clamping drive assembly 29 to drive the two clamping plates 16 on the clamping assembly 6 to move backwards. After the distance between the two clamping plates 16 is large enough, they are moved to both sides of the circuit breaker operating switch, and then the insulating operating rod 3 is released. In the absence of external force, the clamping drive assembly 29 drives the two clamping plates 16 on the clamping assembly 6 to move toward each other, clamping and fixing the circuit breaker operating switch, so as to operate the circuit breaker.

[0030] Furthermore, in one embodiment, a guide long groove 18 is provided on the inner side surfaces of the two handles of the insulating handle 1, and guide plug plates 19 are connected to both ends of the insulating operating rod 3. The guide plug plates 19 extend into the guide long groove 18 and are slidably connected with the insulating handle 1; the insulating operating rod 3 can be guided and limited by the sliding connection between the guide plug plates 19 and the insulating operating rod 3 to ensure its stability during movement.

[0031] Furthermore, in one embodiment, a protective shell 4 is connected between the front and rear sides of the two support frames 24, and the protective shell 4 encloses the two support frames 24 into one shell. The clamping drive component 29 is arranged inside the protective shell 4; the clamping drive component 29 can be separated from the outside by the protective shell 4 to prevent the movable components thereon from being damaged by external interference, or from causing accidents due to contact with the outside during operation.

[0032] Furthermore, in one embodiment, mounting sockets 7 are provided on the inner side surfaces of the lower parts of the two handles of the insulating handle 1, the ends of the insulating grip rod 2 are connected to the mounting sockets 7, and the insulating grip rod 2 is provided with an anti-slip rubber sleeve 8; by providing the mounting sockets 7, the installation and disassembly of the insulating grip rod 2 is facilitated, and the operation assembly efficiency is improved; holding the insulating grip rod 2 by the anti-slip rubber sleeve 8 can improve the stability of holding and prevent the hand from slipping and falling off.

[0033] Furthermore, in one embodiment, the support frame 24 is U-shaped as a whole, and connection sockets 21 are provided on both sides of the upper left and right sides of the insulating handle 1, and one end of the support frame 24 is connected to the connection socket 21 by plugging; the connection by plugging is convenient for assembly and disassembly of the device, improves working efficiency, and facilitates maintenance.

[0034] Furthermore, in one embodiment, the clamping drive assembly 29 includes a guide sleeve 27 fixedly arranged on the upper part of the support frame 24, and the guide sleeve 27 is slidably connected with a clamping drive slide rod 26, and one end of the clamping drive slide rod 26 is connected to the clamping assembly 6; the clamping assembly 6 can be driven by the movement of the clamping drive slide rod 26, which is stable and efficient.

[0035] Furthermore, in one embodiment, the clamping drive assembly 29 includes an insulating push-pull cross bar 22, on which a transmission sleeve 23 is slidably provided, and on which a first connecting rod 25 and one end of a second connecting rod 28 are rotatably connected, the other end of the first connecting rod 25 is rotatably connected to the support frame 24, and the other end of the second connecting rod 28 is rotatably connected to the clamping drive slide rod 26; the clamping drive slide rod 26 can be driven to move by the up and down movement of the insulating push-pull cross bar 22 and the transmission of the first connecting rod 25 and the second connecting rod 28, thereby driving the clamping assembly 6.

[0036] Furthermore, in one embodiment, the clamping assembly 6 includes a clamping bending rod 13, and a guide through hole 17 is provided on the top of the protective shell 4. The clamping bending rod 13 passes through the guide through hole 17 and its end is connected to the clamping plate 16; the guide through hole 17 can be used to guide and limit the clamping bending rod 13 when it moves, thereby ensuring its stability during the movement.

[0037] Furthermore, in one embodiment, it also includes a scale display component 5, which includes a scale display board 14 arranged on the protective shell 4, and a scale pointing bent rod 15 is connected to the clamping bending rod 13, and a scale pointing head 20 is connected to the end of the scale pointing bent rod 15; the scale pointing bent rod 15 can be driven to move by the movement of the clamping bending rod 13, and then the scale pointing head 20 on the scale pointing bent rod 15 indicates the scale on the scale display board 14.

[0038] Furthermore, in one embodiment, an insulating guide tube 10 is provided in the middle of the insulating handle 1, and the insulating guide tube 10 is slidably connected to an insulating push-pull vertical rod 11, one end of the insulating push-pull vertical rod 11 is connected to the insulating push-pull horizontal rod 22, and the other end is connected to the insulating operating rod 3; the end of the insulating operating rod 3 is connected to one end of a tension spring 12, and the other end of the tension spring 12 is connected to the insulating handle 1; by pulling the insulating operating rod 3, the insulating push-pull horizontal rod 22 can be pulled downward by the insulating push-pull vertical rod 11. The first connecting rod 25, the second connecting rod 28 and the clamping driving slide bar 26 drive the clamping bending rod 13 to move, so that the two clamping plates 16 move in opposite directions; after the insulating operating rod 3 is released, under the action of the tension of the tension spring 12, the insulating operating rod 3 moves upward, and the insulating push-pull horizontal rod 22 is pushed upward by the insulating push-pull vertical rod 11, and finally the two clamping plates 16 move toward each other through the transmission of the first connecting rod 25, the second connecting rod 28 and the clamping driving slide bar 26.

[0039] In summary, the present invention is a manual switch opening and closing device for a large current circuit breaker, wherein the clamping drive component 29 is connected to the clamping component 6, and the clamping plate 16 is arranged on the clamping component 6, and the two clamping plates 16 on the clamping component 6 can be driven by the clamping drive component 29 to move toward or away from each other; an insulating operating rod 3 is arranged in the middle between the two handles of the insulating handle 1, and the insulating operating rod 3 is connected to the clamping drive component 29, and the clamping drive component 29 can be operated by the insulating operating rod 3. When using the manual switch opening and closing device of the circuit breaker of the present invention, the device can be held by the insulating gripping rod 2, the two clamping plates 16 provided on the clamping assembly 6 are aligned with the operating opening on the circuit breaker, and the insulating operating rod 3 is pulled to drive the clamping drive assembly 29 to drive the two clamping plates 16 on the clamping assembly 6 to move backwards, and when the distance between the two clamping plates 16 is large enough, they are moved to both sides of the circuit breaker operating switch, and then the insulating operating rod 3 is released. In the absence of external force, the clamping drive assembly 29 drives the two clamping plates 16 on the clamping assembly 6 to move toward each other, clamping and fixing the circuit breaker operating switch, so as to facilitate the operation of the circuit breaker; a manual switch opening and closing device of a large current circuit breaker of the present invention has a reasonable structure and is easy to operate and use, and can effectively assist the staff to operate the manual switch of the large current circuit breaker, improve the working efficiency, and ensure the working safety.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A manual switch opening and closing device for a large current circuit breaker, characterized in that: It comprises an insulating handle (1), wherein the lower portion between the two handles of the insulating handle (1) is connected to an insulating grip rod (2), the left and right sides of the upper portion of the insulating handle (1) are connected to support frames (24), and a clamping drive assembly (29) is arranged inside a frame body formed by the two support frames (24); The clamping drive assembly (29) is connected to a clamping assembly (6), a clamping plate (16) is provided on the clamping assembly (6), and the clamping drive assembly (29) is used to drive the two clamping plates (16) on the clamping assembly (6) to move towards or away from each other; An insulating operating rod (3) is provided in the middle between the two handles of the insulating handle (1); the insulating operating rod (3) is connected to the clamping drive assembly (29); and the insulating operating rod (3) is used to operate the clamping drive assembly (29).

2. A manual switch opening and closing device for a large current circuit breaker according to claim 1, characterized in that: The inner side surfaces of the two handles of the insulating handle (1) are both provided with a guide slot (18), and both ends of the insulating operating rod (3) are connected to a guide plug plate (19), and the guide plug plate (19) extends into the guide slot (18) and is slidably connected to the insulating handle (1).

3. A manual switch opening and closing device for a large current circuit breaker according to claim 1, characterized in that: A protective shell (4) is connected between the front and rear sides of the two support frames (24); the protective shell (4) encloses the two support frames (24) into one shell; and the clamping drive assembly (29) is arranged inside the protective shell (4).

4. A manual switch opening and closing device for a large current circuit breaker according to claim 1, characterized in that: The inner side surfaces of the lower parts of the two handles of the insulating handle (1) are both provided with mounting sockets (7), the ends of the insulating grip rods (2) are connected to the mounting sockets (7), and the insulating grip rods (2) are provided with anti-slip rubber sleeves (8).

5. A manual switch opening and closing device for a large current circuit breaker according to claim 1, characterized in that: The support frame (24) is U-shaped as a whole, and connection sockets (21) are provided on both left and right sides of the upper portion of the insulating handle (1), and one end of the support frame (24) is connected to the connection socket (21) by plugging.

6. A manual switch opening and closing device for a large current circuit breaker according to claim 1, characterized in that: The clamping drive assembly (29) comprises a guide sleeve (27) fixedly arranged on the upper part of the support frame (24), the guide sleeve (27) being slidably connected to a clamping drive slide rod (26), and one end of the clamping drive slide rod (26) being connected to the clamping assembly (6).

7. A manual switch opening and closing device for a large current circuit breaker according to claim 6, characterized in that: The clamping drive assembly (29) comprises an insulating push-pull cross bar (22), a transmission sleeve (23) is slidably provided on the insulating push-pull cross bar (22), a first connecting rod (25) and one end of a second connecting rod (28) are rotatably connected to the transmission sleeve (23), the other end of the first connecting rod (25) is rotatably connected to the support frame (24), and the other end of the second connecting rod (28) is rotatably connected to the clamping drive sliding rod (26).

8. A manual switch opening and closing device for a large current circuit breaker as claimed in claim 3, characterized in that: The clamping assembly (6) comprises a clamping bending rod (13), the top of the protective shell (4) is provided with a guide through hole (17), the clamping bending rod (13) passes through the guide through hole (17) and the end thereof is connected to the clamping plate (16).

9. A manual switch opening and closing device for a large current circuit breaker according to claim 8, characterized in that: It also comprises a scale display assembly (5), the scale display assembly (5) comprising a scale display panel (14) arranged on the protective shell (4), the clamping bending rod (13) being connected to a scale pointing bending rod (15), the end of the scale pointing bending rod (15) being connected to a scale pointing head (20).

10. A manual switch opening and closing device for a large current circuit breaker according to claim 8, characterized in that: An insulating guide tube (10) is provided in the middle of the insulating handle (1), and the insulating guide tube (10) is slidably connected to an insulating push-pull vertical rod (11), one end of the insulating push-pull vertical rod (11) is connected to the insulating push-pull horizontal rod (22), and the other end is connected to the insulating operating rod (3); the end of the insulating operating rod (3) is connected to one end of a tension spring (12), and the other end of the tension spring (12) is connected to the insulating handle (1).

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