Spring hanging tool suitable for isolation switch

Abstract

The utility model discloses a spring hanging tool suitable for an isolation switch, and particularly relates to the technical field of isolation switches, the spring hanging tool comprises a limiting rod and a base, the bottom of the limiting rod is connected with a supporting rod, the outer side of the lower end of the supporting rod is sleeved with a connecting block, and the outer side of the supporting rod is sleeved with a first spring on the outer side of the limiting rod and the outer side of the connecting block; through cooperative use of the transmission mechanism, the base and the swing arm, when the leg limiting rod applies force to press downwards, the push plate is pushed to move, so that the rack is driven to drive the gear to drive the rotating shaft and the swing arm to rotate, the upper end of the swing arm is clamped into the inner side of the limiting rod, meanwhile, the clamping block penetrates through the open groove to reach the bottom of the base, and the leg limiting rod is driven to rotate. Limiting of the swing arm is achieved, so that pre-pressing of the first spring is completed, the first spring and matched assemblies of the first spring can be assisted to be installed, use is convenient, and practicability is high; according to the transmission mechanism, the cover plate is connected and fixed through the bolts, so that parts in the transmission mechanism are convenient to disassemble for overhaul and maintenance.

Description

Technical Field

[0001] The utility model relates to the technical field of isolation knife switches, in particular to a hanging spring tooling suitable for isolation knife switches. Background Art

[0002] The isolating knife switch is the most commonly used electrical appliance in high-voltage switchgear. Its working principle and structural design are simple, and it is mainly used in high-voltage switchgear. The use of the isolating knife switch has the following main functions: after opening the switch, a reliable insulation gap is established, and the equipment or line to be repaired is separated from the power supply with an obvious disconnection point to ensure the safety of the maintenance personnel and equipment. According to the operation needs, the line is switched to separate and close the small current tubes in the line, such as the charging current of the bushing, busbar, terminal head, and the capacitive current of the switch capacitor. According to the specific conditions of different structural types, it is used to separate and close the no-load excitation current of a transformer of a certain capacity. Therefore, the isolating knife switch is used in large quantities and has strong working reliability. It is widely used in the design, establishment and safe operation of substations and power plants. There are many types of isolating switches. According to different installation methods, they can be divided into outdoor isolating switches and indoor high-voltage isolating switches. Outdoor isolating switches refer to isolating switches that can withstand wind, rain, snow, dirt, condensation, ice and thick frost, and are suitable for installation on terraces.

[0003] At present, a spring and its supporting components are usually installed at the bottom of the isolating knife switch to connect them to the crank arm welded on the main shaft so as to provide energy for the closing and opening of the isolating knife; when in the open state, the isolating blade is kept in the raised position (opening position). However, the installation of the spring and its supporting components is usually carried out manually after compression, and there is a lack of auxiliary installation tooling, which makes the spring installation inconvenient and has poor practicality. Utility Model Content

[0004] The utility model aims to provide a hanging spring tooling suitable for isolating knife switches to solve the problems raised in the above-mentioned background technology.

[0005] The cam is secured to the bottom of the base with a spring which is secured on the outside of the base and on the top of the base with a spring which is secured on the outside of the base and on the top of the base with a spring which is secured on the top of the base.

[0006] Furthermore, the transmission mechanism includes a push plate, and the push plate is arranged in chamber two, sliding rods are symmetrically arranged in chamber two, and both ends of the push plate are slidably sleeved on the outside of the sliding rods, racks are symmetrically arranged at positions in chamber one, and the lower end of the rack is fixedly connected to the top of the push plate, the outer wall of the rotating shaft is sleeved with a gear meshing with the rack, a spring two is arranged between the push plate and the inner bottom surface of chamber one, an elastic sheet is provided on the inner side of the spring two at the bottom of the push plate, and a clamping block is connected to the lower end of the elastic sheet through a slot opened at the bottom of the base, and through the transmission mechanism, when the spring one and the limit rod, the support rod, the connecting block, the stop block and the fixed rod are connected to the base and the swing arm, the two swing arms are synchronously driven by the transmission to clamp and limit the limit rod, thereby facilitating the pre-compression of the spring one to assist its installation, which is convenient to use and highly practical.

[0007] Furthermore, a guide sleeve is provided on the outer side of the rack, and the guide sleeve is fixedly connected to an inner wall of the chamber, and openings adapted to the rack are symmetrically provided on the top of the base to limit and guide the rack and make its movement more stable.

[0008] Furthermore, the spring piece is made of metal, the clamping block is a right-angled triangle structure, and the inner wall of one side of the slot is provided with an inclined surface adapted to the clamping block, so that the spring piece has toughness and can bend when the clamping block is pulled to the inclined surface and squeezed to move to one side, so that the clamping block and the base batch check the push plate limit.

[0009] Furthermore, the limiting rod and the base are both concave-shaped, the chamber one is concave, the swing arm is L-shaped, and the swing arm is fixedly connected to the rotating shaft, and the structure of the swing arm is so as to cooperate with the limiting rod to limit it.

[0010] Furthermore, a cover plate is provided on one side of the base, and the cover plate is fixedly connected to the base by bolts so as to close the chamber, and the cover plate can be disassembled to facilitate inspection and maintenance of the transmission mechanism.

[0011] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0012] 1. The utility model uses a transmission mechanism, a base and a swing arm in coordination. When the leg limit rod is pressed downward, the push plate is pushed to move, thereby driving the rack drive gear to drive the rotating shaft and the swing arm to rotate, so that the upper end of the swing arm is clamped into the inner side of the limit rod, and at the same time, the clamping block passes through the slot to the bottom of the base to limit the swing arm, thereby completing the pre-compression of the spring 1, and assisting the installation of the spring 1 and its supporting components. It is easy to use and has strong practicality.

[0013] 2. The cover plate fixed by bolt connection in the utility model can be disassembled to inspect and maintain the components in the transmission mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a partial cross-sectional structural schematic diagram of the utility model;

[0017] Figure 3 This utility model Figure 2 A is a schematic diagram of the enlarged structure of the middle part;

[0018] Figure 4 It is a schematic diagram of the structure between the base and the cover plate of the utility model;

[0019] In the figure: 1. limit rod; 2. support rod; 3. connecting block; 4. stopper; 5. fixing rod; 6. spring 1; 7. base; 8. swing arm; 9. rotating shaft; 10. cover plate; 11. push plate; 12. slide rod; 13. spring 2; 14. spring piece; 15. block; 16. rack; 17. guide sleeve; 18. gear; 19. chamber 1; 20. chamber 2. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1-Figure 4 The spring-hanging tooling suitable for an isolating knife switch shown in the figure comprises a limit rod 1 and a base 7. A support rod 2 is connected to the bottom of the limit rod 1. A connecting block 3 is sleeved on the outer side of the lower end of the support rod 2. A spring 6 is sleeved on the outer side of the support rod 2 on the limit rod 1 and the outer side of the connecting block 3. A stopper 4 is connected to the lower end of the support rod 2 below the connecting block 3. A fixing rod 5 is connected to one end of the connecting block 3. The connecting block 3 is arranged on the inner side of the base 7. Grooves are symmetrically provided on the top of the base 7. A rotating shaft 9 is rotatably installed in the groove. A swing arm 8 is sleeved on the outer side of the rotating shaft 9, and the upper end of the swing arm 8 is stuck in the inner side of the limit rod 1. A chamber 19 and a chamber 2 20 are provided in the base 7, and the chamber 2 20 is located in the middle position of the base 7. A through groove adapted to the stopper 4 is provided on the top of the chamber 20. A transmission mechanism connected to the rotating shaft 9 is provided in the chamber 19 and the chamber 2 20.

[0022] In this example, the transmission mechanism includes a push plate 11, and the push plate 11 is arranged in the chamber 20, and the sliding rod 12 is symmetrically arranged in the chamber 20, and the two ends of the push plate 11 are slidably sleeved on the outside of the sliding rod 12, and racks 16 are symmetrically arranged in the chamber 19, and the lower end of the rack 16 is fixedly connected to the top of the push plate 11, and the outer wall of the rotating shaft 9 is sleeved with a gear 18 meshing with the rack 16, and a spring 2 13 is arranged between the push plate 11 and the bottom surface of the chamber 19, and a spring sheet 14 is arranged on the inner side of the spring 2 13 at the bottom of the push plate 11, and the lower end of the spring sheet 14 is connected with a clamping block 15 through a slot opened at the bottom of the base 7. Through the transmission mechanism, when the spring 1 6 and the limit rod 1, the support rod 2, the connecting block 3, the stop block 4 and the fixing rod 5 are connected to the base 7 and the swing arm 8, the synchronous transmission drives the two swing arms 8 to clamp and limit the limit rod 1, thereby facilitating the pre-compression of the spring 1 6 to assist its installation, which is convenient to use and has strong practicality. In this example, a guide sleeve 17 is sleeved on the outer side of the rack 16, and the guide sleeve 17 is fixedly connected to the inner wall of the chamber 19. The top of the base 7 is symmetrically provided with an opening adapted to the rack 16, so as to limit and guide the rack 16, so as to make its movement more stable. In this example, the spring sheet 14 is made of metal, the block 15 is a right-angled triangle structure, and the inner wall of one side of the slot is provided with an inclined surface adapted to the block 15, so as to make the spring sheet 14 tough, and when the block 15 is pulled to the inclined surface and squeezed to move to one side, the spring sheet 14 can be driven to bend, so that the block 15 and the base 7 can check the limit of the push plate 11. In this example, the limit rod 1 and the base 7 are both concave, the chamber 19 is concave, the swing arm 8 is L-shaped, and the swing arm 8 is fixedly connected to the rotating shaft 9, and the structure of the swing arm 8 is so as to cooperate with the limit rod 1 to limit it. In this example, a cover plate 10 is provided on one side of the base 7, and the cover plate 10 is fixedly connected to the base 7 by bolts so as to close the chamber 19. At the same time, the cover plate 10 can be disassembled to facilitate the inspection and maintenance of the transmission mechanism.

[0023] When the lever 14 is in motion, the stopper 4 is pressed against the stopper 1, and the stopper 4 is pressed against the stopper 1. When the lever 14 is in motion, the stopper 4 is pressed against the stopper 1, and the stopper 4 is pressed against the stopper 1. When the lever 14 is in motion, the stopper 4 is pressed against the stopper 1, and the stopper 4 is pressed against the stopper 1. After the spring 14 is released, the locking cam 15 is released and the locking cam 16 is in a state of being loosened and the locking cam 16 is in a state of being loosened and the locking cam 16 is in a state of being loosened and the locking cam 16 is in a state of being loosened and the locking cam 16 is in a state of being loosened and the locking cam 16 is in a state of being loosened and the locking cam 16 is in a state of being loosened and the locking cam 16 is in a state of being loosened and the locking cam 16 is in a state of being loosened and the locking cam 16 is in a state of being loosened and the locking cam 16 is in a state of being loosened and the locking cam 16 is in a state of being loosened and the locking cam 16 is in a state of being loosened and the locking cam 16 is in a state of being loosened and the locking cam 16 is in a state of being loosened and the locking cam 16 is in a state of being loosened and the locking cam 16 is in a state of being loosened and the locking cam 16

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A spring-hanging tool suitable for an isolation knife switch, comprising a limit rod (1) and a base (7), characterized in that: The bottom of the limiting rod (1) is connected to a supporting rod (2), the outer side of the lower end of the supporting rod (2) is sleeved with a connecting block (3), the outer side of the supporting rod (2) is sleeved with a spring (6) on the outer side of the limiting rod (1) and the connecting block (3), the lower end of the supporting rod (2) is connected to a stopper (4) below the connecting block (3), one end of the connecting block (3) is connected to a fixing rod (5), the connecting block (3) is arranged on the inner side of a base (7), and the top of the base (7) is symmetrically provided with grooves, A rotating shaft (9) is rotatably installed in the groove, a swing arm (8) is sleeved on the outer side of the rotating shaft (9), and the upper end of the swing arm (8) is inserted into the inner side of the limit rod (1), a chamber 1 (19) and a chamber 2 (20) are provided in the base (7), and the chamber 2 (20) is located in the middle of the base (7), a through groove adapted to the stopper (4) is provided on the top of the chamber 2 (20), and a transmission mechanism connected to the rotating shaft (9) is provided in the chamber 1 (19) and the chamber 2 (20).

2. The spring-hanging fixture suitable for an isolation knife switch according to claim 1, characterized in that: The transmission mechanism comprises a push plate (11), and the push plate (11) is arranged in chamber 2 (20), a sliding rod (12) is symmetrically arranged in chamber 2 (20), and both ends of the push plate (11) are slidably sleeved on the outside of the sliding rod (12), racks (16) are symmetrically arranged in chamber 1 (19), and the lower end of the rack (16) is fixedly connected to the top of the push plate (11), the outer wall of the rotating shaft (9) is sleeved with a gear (18) meshing with the rack (16), a spring 2 (13) is arranged between the push plate (11) and the inner bottom surface of chamber 1 (19), a spring sheet (14) is arranged at the bottom of the push plate (11) on the inner side of the spring 2 (13), and the lower end of the spring sheet (14) passes through a slot opened at the bottom of the base (7) and is connected with a clamping block (15).

3. The spring-hanging fixture suitable for an isolation knife switch according to claim 2, characterized in that: A guide sleeve (17) is sleeved on the outer side of the rack (16), and the guide sleeve (17) is fixedly connected to the inner wall of the chamber (19). The top of the base (7) is symmetrically provided with openings adapted to the rack (16).

4. The spring-hanging fixture suitable for an isolation knife switch according to claim 2, characterized in that: The spring piece (14) is made of metal, the clamping block (15) is a right-angled triangle structure, and an inner wall on one side of the slot is provided with an inclined surface adapted to the clamping block (15).

5. The spring-hanging fixture suitable for an isolation knife switch according to claim 2, characterized in that: The limiting rod (1) and the base (7) are both in a concave shape, the chamber 1 (19) is in a concave shape, the swing arm (8) is in an L shape, and the swing arm (8) is fixedly connected to the rotating shaft (9).

6. The spring-hanging fixture suitable for an isolation knife switch according to claim 1, characterized in that: A cover plate (10) is provided on one side of the base (7), and the cover plate (10) is fixedly connected to the base (7) by bolts.

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