A closing lever

Abstract

The invention discloses a closing lever, which specifically relates to the technical field of electric power equipment, including a rod body and a closing device, wherein the closing device includes a base, a toggle member and a reset torsion spring, wherein the base is connected to the rod body, the toggle member includes a cross bar, a hook rod bent toward the base, a limit stopper and a connecting block, wherein the two ends of the cross bar are respectively connected to the hook rod and the limit stopper, the bottom of the cross bar is connected to the connecting block, the connecting block is rotatably connected to the base through a rotating shaft, the reset torsion spring is sleeved on the rotating shaft, and the two ends are respectively connected to the toggle member and the base, the connecting block has a limit protrusion that limits its rotation toward the limit stopper, and when the drop-out fuse is pulled, the top of the cross bar near one end of the hook rod abuts against the connection position of the fuse tube and the pull ring of the fuse tube, so that the toggle member can rotate toward the hook rod, and the hook rod can hook the pull ring under the action of the rebound force of the reset torsion spring. The invention can enhance the flexibility of the closing operation, improve the safety and stability of the pulling and closing operations, and improve the work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of electric power equipment, and in particular to a closing lever. Background Art

[0002] With the rapid development of the power industry and the popularization of high-voltage power systems, the safety, reliability and ease of operation of power equipment have become increasingly important. During the operation of high-voltage power equipment, the closing lever mainly controls the closing action of the switch. The operating performance of the closing lever directly affects the stability of the power system and the safe operation of the equipment.

[0003] The traditional closing device has a relatively simple structure, similar to the structure of a clothes pole. When the switch is pulled, the end of the closing device needs to be hooked on the pull ring of the drop-out fuse, and the pull ring is pulled to make the fuse tube fall, thereby disconnecting the circuit. However, the installation position of the drop-out fuse is high, and it is difficult for the operator to accurately insert the end of the closing device into the pull ring of the high drop-out fuse, which affects normal operation; and when replacing the fuse, it is easy for the fuse to fall off from a high place due to improper operation. Summary of the invention

[0004] The purpose of the present invention is to provide a closing lever to solve the problems existing in the above-mentioned prior art, which can enhance the flexibility of pulling and closing operations, improve the safety and stability of closing operations, and improve work efficiency.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a closing lever, comprising a rod body and a closing device, wherein the closing device comprises a base, a toggle member and a reset torsion spring, wherein the base is fixedly connected to the rod body, the toggle member comprises a cross bar, a hook rod, a limit stopper and a connecting block, one end of the cross bar is fixedly connected to the hook rod, and the other end is fixedly connected to the limit stopper, the bottom of the cross bar is fixedly connected to the connecting block, the base has a limit component, the connecting block is rotatably connected to the limit component through a rotating shaft, the hook rod is bent toward the base, and the reset torsion spring is sleeved on the rotating shaft , and one end of the reset torsion spring is connected to the toggle piece, and the other end is connected to the limiting component. The side of the connecting block close to the limiting block has a limiting protrusion for limiting the rotation of the connecting block toward the limiting block. When the drop-type fuse is closed, the top of the cross bar close to one end of the hook rod is abutted against the connection position between the fuse tube and the pull ring of the fuse tube, and continuing to push the toggle piece toward the fuse tube can make the toggle piece rotate toward the hook rod. The hook rod can pass through the pull ring of the fuse tube under the action of the rebound force of the reset torsion spring, and then hook the pull ring.

[0007] Preferably, the toggle member further includes a closing limit block, and the closing limit block is fixedly connected to the top of the cross bar.

[0008] Preferably, the base includes a connecting tube, a fixing plate and the limiting component, the connecting tube is fixedly connected to the rod body, the fixing plate is fixedly connected to the side wall of the connecting tube, and the limiting component is fixedly connected to an end of the fixing plate away from the connecting tube.

[0009] Preferably, the limiting component includes a top plate, a bottom plate and an arc-shaped side plate that fixes the top plate to the bottom plate, the bottom plate is fixedly connected to the fixing plate, the top plate, the arc-shaped side plate and the bottom plate form a accommodating cavity, the connecting block is placed in the accommodating cavity, and the limiting protrusion can abut against one end of the arc-shaped side plate.

[0010] Preferably, the connecting block includes a cylindrical block and a special-shaped block, one end of the special-shaped block is fixedly connected to the cross bar, and the other end is used for fixed connection to the side wall of the cylindrical block, the limiting protrusion is fixedly connected to the side wall of the cylindrical block, the top plate and the bottom plate are both circular in shape, and the cylindrical block is placed in the accommodating cavity.

[0011] Preferably, the central angle of the arc-shaped side panel is 90°.

[0012] Preferably, the connecting tube is threadably connected to the rod body.

[0013] Preferably, the connecting block is provided with a first through hole and a second through hole, the first through hole is used for the rotating shaft to pass through, the reset torsion spring is placed in the first through hole, and one end of the reset torsion spring extends from one end of the first through hole, is bent and inserted into the second through hole, so that one end of the reset torsion spring is fixed on the connecting block, and the other end of the reset torsion spring extends from the other end of the first through hole, is bent to form a hook, and the hook passes through the top plate, so that the other end of the reset torsion spring is fixed on the top plate.

[0014] Preferably, the rotating shaft comprises a hexagon socket bolt and a nut, and the hexagon socket bolt passes through the top plate, the connecting block, the bottom plate and the fixing plate in sequence and is threadedly connected to the nut.

[0015] Preferably, the rod body is made of epoxy resin.

[0016] Compared with the prior art, the present invention has achieved the following technical effects:

[0017] The present invention provides a closing toggle lever, wherein a connecting block of a toggle member is rotatably connected to a limiting component via a rotating shaft, a reset torsion spring is sleeved on the rotating shaft, and when the drop-out type fuse is switched off, an operator pushes the toggle member abutting against a connecting position between a fuse tube and a pull ring of the fuse tube with force, and a limiting protrusion of the connecting block can limit the connection block from rotating toward the limiting block, so that the toggle member can only rotate toward a bent hook rod, and the resilience of the reset torsion spring can make the bent hook rod return to its position and pass through the pull ring of the fuse tube, thereby realizing fast and accurate hooking of the fuse. The pull ring of the tube improves the flexibility of the switch-closing operation and ensures its stability and safety during the switch-closing operation; when the drop-out fuse is closed, the connection position of the cross bar and the limit stop block is abutted against the connection position of the fuse tube and the pull ring of the fuse tube, and the limit protrusion of the connecting block limits the connection block from rotating toward the limit stop block. Therefore, by pushing the rod body upward with force, the fuse tube can be pushed into the insulating support to achieve closing. During the closing process, the limit stop block reduces the risk of the fuse tube accidentally falling off the closing lever. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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 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 work.

[0019] Figure 1 It is a structural schematic diagram of the closing lever;

[0020] Figure 2 This is an exploded view of the closing device;

[0021] Figure 3 It is a structural schematic diagram of the base and the reset torsion spring;

[0022] Figure 4 It is a structural schematic diagram of a toggle member and a reset torsion spring;

[0023] Figure 5 is a structural schematic diagram of a toggle member;

[0024] Figure 6 Schematic diagram of the closing device performing closing operation on the drop-out fuse.

[0025] In the figure: 1-rod body; 2-closing device; 3-base; 4-toggle member; 5-reset torsion spring; 6-cross bar; 7-hook rod; 8-limit block; 9-connecting block; 10-limiting protrusion; 11-limiting component; 12-closing limit block; 13-connecting cylinder; 14-fixing plate; 15-top plate; 16-arc-shaped side plate; 17-bottom plate; 18-first through hole; 19-second through hole; 20-hexagon socket bolt; 21-nut; 22-fuse tube; 23-pull ring. DETAILED DESCRIPTION

[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] The purpose of the present invention is to provide a closing lever to solve the problems existing in the above-mentioned prior art, which can enhance the flexibility of pulling and closing operations, improve the safety and stability of closing operations, and improve work efficiency.

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] The present invention provides a closing lever, such as Figure 1-5As shown, it includes a rod body 1 and a closing device 2, the closing device 2 includes a base 3, a toggle member 4 and a reset torsion spring 5, the base 3 is fixedly connected to the rod body 1, the toggle member 4 includes a cross bar 6, a hook rod 7, a limit stopper 8 and a connecting block 9, one end of the cross bar 6 is fixedly connected to the hook rod 7, and the other end is fixedly connected to the limit stopper 8, the bottom of the cross bar 6 is fixedly connected to the connecting block 9, the base 3 has a limit component 11, the connecting block 9 is rotatably connected to the limit component 11 through a rotating shaft, the hook rod 7 is bent toward the base 3, the reset torsion spring 5 is sleeved on the rotating shaft, and one end of the reset torsion spring 5 is connected to the toggle member 4, and the other end is connected to the limit component 11 The side of the connecting block 9 close to the limit stopper 8 has a limit protrusion 10 for limiting the rotation of the connecting block 9 toward the limit stopper 8. When the drop-type fuse is closed, the top of the cross bar 6 close to one end of the hook rod 7 is firstly abutted against the connection position between the fuse tube 22 and the pull ring 23 of the fuse tube 22, and the toggle piece 4 is pushed to continue to move toward the fuse tube 22 so that the toggle piece 4 can rotate toward the hook rod 7. When the operator reduces the thrust, the resilience of the reset torsion spring 5 can drive the toggle piece 4 to rotate toward the limit stopper 8 and return to its original position. In the process of returning to its original position, the hook rod 7 can pass through the pull ring 23 of the fuse tube 22 and then hook the pull ring 23. The connecting block 9 of the toggle member 4 is rotatably connected to the limiting component 11 through a rotating shaft, and the reset torsion spring 5 is sleeved on the rotating shaft. When the drop-out type fuse is closed, the operator pushes the toggle member 4 that is in contact with the connection position between the fuse tube 22 and the pull ring 23 of the fuse tube 22 with force. The limiting protrusion 10 of the connecting block 9 can limit the connection block 9 from rotating toward the limiting block 8, so the toggle member 4 can only rotate toward the hook rod 7. The resilience of the reset torsion spring 5 can make the hook rod 7 return to its original position and pass through the pull ring 23 of the fuse tube 22, thereby realizing fast and accurate hooking of the pull ring 23 of the fuse tube 22, thereby improving the flexibility of the closing operation, and effectively reducing the difficulty of the operator in adjusting the closing toggle rod to align with the pull ring 23 of the fuse tube 22, thereby significantly improving the work efficiency and ensuring its stability and safety during the closing operation; when the drop-out type fuse is closed, such as Figure 6 As shown, the connection position of the cross bar 6 and the limit stopper 8 is abutted against the connection position of the fuse tube 22 and the pull ring 23 of the fuse tube 22, and the limit protrusion 10 of the connection block 9 limits the connection block 9 from rotating toward the limit stopper 8. Therefore, by pushing the rod body 1 upward, the fuse tube 22 can be pushed into the insulating support to achieve closing. During the closing process, the limit stopper 8 reduces the risk of the fuse tube 22 accidentally detaching from the closing lever. Moreover, when replacing the fuse wire of the drop-out fuse, the fuse is first pulled, and then the limit stopper 8 is inserted into the ring at the lower end of the fuse tube 22 to separate the lower end of the fuse tube 22 from the insulating rod. When the closing lever removes the fuse tube 22 from the insulating rod, the limit stopper 8 reduces the risk of the fuse tube 22 accidentally falling off.

[0030] In the embodiment of the present invention, it is further preferred that the toggle member 4 further includes a closing limit block 12, and the closing limit block 12 is fixedly connected to the top of the cross bar 6. When the drop-out fuse is closed, the closing limit block 12 can limit the movement range of the fuse tube 22 on the cross bar 6, that is, the fuse tube 22 moves between the closing limit block 12 and the limit block 8, further preventing the fuse from accidentally falling off.

[0031] In the embodiment of the present invention, it is further preferred that the base 3 includes a connecting tube 13, a fixing plate 14 and a limiting component 11, the connecting tube 13 is fixedly connected to the rod body 1, the fixing plate 14 is fixedly connected to the side wall of the connecting tube 13, the limiting component 11 is fixedly connected to one end of the fixing plate 14 away from the connecting tube 13, the limiting component 11 includes a top plate 15, a bottom plate 17 and an arc-shaped side plate 16 that fixes the top plate 15 to the bottom plate 17, the bottom plate 17 is fixedly connected to the fixing plate 14, the top plate 15, the arc-shaped side plate 16 and the bottom plate 17 form an accommodating cavity, the connecting block 9 is placed in the accommodating cavity, and the limiting protrusion 10 can abut against one end of the arc-shaped side plate 16. Preferably, when the reset torsion spring 5 is not twisted by external force, there is a certain distance between the limit protrusion 10 and the arc-shaped side plate 16. When closing the switch, the connecting block 9 can rotate toward the limit stop block 8 by a certain angle, so that the limit protrusion 10 moves to abut against the arc-shaped side plate 16. The arc-shaped side plate 16 can limit the connection block 9 from rotating toward the limit stop block 8, thereby facilitating the closing operation.

[0032] In the embodiment of the present invention, it is further preferred that the connection block 9 includes a cylindrical block and a special-shaped block, one end of the special-shaped block is fixedly connected to the cross bar 6, and the other end is used for fixed connection to the side wall of the cylindrical block, the limiting protrusion 10 is fixedly connected to the side wall of the cylindrical block, the top plate 15 and the bottom plate 17 are both circular in shape, the cylindrical block is placed in the accommodating cavity, the central angle of the arc side plate 16 is 90°, that is, the shape of the limiting component 11 is a cylinder with 1 / 4 of the side wall retained, the top plate 15 and the bottom plate 17 are the top and top surfaces of the cylinder, the arc side plate 16 is 1 / 4 of the side wall of the cylinder, the cylinder is sleeved outside the cylindrical block, and the axis of the cylinder and the cylindrical block are colinear. Preferably, the limiting protrusion 10 is an arc block coaxial with the cylindrical block, the outer diameter of the arc block is larger than the outer diameter of the cylinder, and when the toggle member 4 rotates toward the limiting block 8, the arc block will be stuck by 1 / 4 of the side wall of the cylinder.

[0033] It is further preferred in the embodiment of the present invention that the connecting tube 13 is threadedly connected to the rod body 1, which not only enhances the stability of the connection but also simplifies the installation and disassembly process of the device.

[0034] In the embodiment of the present invention, it is further preferred that the connection block 9 is provided with a first through hole 18 and a second through hole 19, the first through hole 18 is used for the rotation shaft to pass through, the reset torsion spring 5 is placed in the first through hole 18, and one end of the reset torsion spring 5 extends from one end of the first through hole 18, is bent and inserted into the second through hole 19, so that one end of the reset torsion spring 5 is fixed on the connection block 9, and the other end of the reset torsion spring 5 extends from the other end of the first through hole 18, is bent to form a hook, and the hook passes through the top plate 15, so that the other end of the reset torsion spring 5 is fixed on the top plate 15. When the toggle member 4 moves relative to the limiting component 11, the reset torsion spring 5 can provide a rebound force, so that the toggle member 4 rotates back to its original posture, and then the hook is quickly clamped into the pull ring 23 of the fuse tube 22, reducing the difficulty of the closing toggle lever hooking the fuse pull ring 23.

[0035] In the embodiment of the present invention, it is further preferred that the rotating shaft includes a hexagon socket bolt 20 and a nut 21, and the hexagon socket bolt 20 sequentially passes through the top plate 15, the connecting block 9, the bottom plate 17 and the fixing plate 14 and is threadedly connected to the nut 21. The reset torsion spring 5 is wound around the hexagon socket bolt 20.

[0036] It is further preferred in the embodiment of the present invention that the rod body 1 is made of epoxy resin, which can effectively resist electromagnetic interference and external physical interference, thereby ensuring stable operation in a complex working environment.

[0037] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A closing lever, characterized in that: The invention comprises a rod body and a closing device, wherein the closing device comprises a base, a toggle member and a reset torsion spring, wherein the base is fixedly connected to the rod body, the toggle member comprises a cross bar, a hook rod, a limit stopper and a connecting block, one end of the cross bar is fixedly connected to the hook rod, and the other end is fixedly connected to the limit stopper, the bottom of the cross bar is fixedly connected to the connecting block, the base has a limit component, the connecting block is rotatably connected to the limit component through a rotating shaft, the hook rod is bent toward the base, the reset torsion spring is sleeved on the rotating shaft, and the reset One end of the torsion spring is connected to the toggle piece, and the other end is connected to the limiting component. The side of the connecting block close to the limiting block has a limiting protrusion for limiting the rotation of the connecting block toward the limiting block. When the drop-out fuse is closed, the top of the cross bar close to one end of the hook rod is abutted against the connecting position between the fuse tube and the pull ring of the fuse tube. Continuing to push the toggle piece toward the fuse tube can cause the toggle piece to rotate toward the hook rod. The hook rod can pass through the pull ring of the fuse tube under the action of the rebound force of the reset torsion spring, and then hook the pull ring.

2. The closing lever according to claim 1, characterized in that: The toggle member further comprises a closing limit block, and the closing limit block is fixedly connected to the top of the cross bar.

3. The closing lever according to claim 1, characterized in that: The base includes a connecting tube, a fixing plate and the limiting component, wherein the connecting tube is fixedly connected to the rod body, the fixing plate is fixedly connected to the side wall of the connecting tube, and the limiting component is fixedly connected to an end of the fixing plate away from the connecting tube.

4. The closing lever according to claim 3, characterized in that: The limiting component includes a top plate, a bottom plate and an arc-shaped side plate that fixes the top plate to the bottom plate, the bottom plate is fixedly connected to the fixing plate, the top plate, the arc-shaped side plate and the bottom plate form an accommodating cavity, the connecting block is placed in the accommodating cavity, and the limiting protrusion can abut against one end of the arc-shaped side plate.

5. The closing lever according to claim 4, characterized in that: The connecting block includes a cylindrical block and a special-shaped block, one end of the special-shaped block is fixedly connected to the cross bar, and the other end is used for fixed connection to the side wall of the cylindrical block, the limiting protrusion is fixedly connected to the side wall of the cylindrical block, the top plate and the bottom plate are both circular in shape, and the cylindrical block is placed in the accommodating cavity.

6. The closing lever according to claim 5, characterized in that: The central angle of the arc-shaped side plate is 90°.

7. The closing lever according to claim 3, characterized in that: The connecting tube is threadedly connected to the rod body.

8. The closing lever according to claim 4, characterized in that: The connecting block is provided with a first through hole and a second through hole, the first through hole is used for the rotating shaft to pass through, the reset torsion spring is placed in the first through hole, and one end of the reset torsion spring extends out from one end of the first through hole, is bent and inserted into the second through hole, so that one end of the reset torsion spring is fixed on the connecting block, and the other end of the reset torsion spring extends out from the other end of the first through hole, is bent to form a hook, and the hook passes through the top plate, so that the other end of the reset torsion spring is fixed to the top plate.

9. The closing lever according to claim 8, characterized in that: The rotating shaft comprises a hexagon socket bolt and a nut. The hexagon socket bolt passes through the top plate, the connecting block, the bottom plate and the fixing plate in sequence and is threadedly connected with the nut.

10. The closing lever according to claim 1, characterized in that: The rod body is made of epoxy resin.

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