Vacuum arc-extinguishing chamber static end protection device

Abstract

The utility model discloses a vacuum arc-extinguishing chamber static end protection device which comprises a fixing body, an installation cavity is arranged on the outer wall of the top of the fixing body, a sliding groove is formed in the inner wall of the bottom of the installation cavity, two sliding blocks are arranged in the sliding groove, and a first clamping plate and a second clamping plate are fixed to the tops of the two sliding blocks respectively. Arc surfaces are arranged on the sides, close to each other, of the first clamping plate and the second clamping plate, protective layers are arranged in the arc surfaces, a double-line screw rod is connected into the sliding groove through a bearing, one end of the double-line screw rod extends out of the fixing body to be fixedly provided with a hand wheel, and the two sliding blocks are connected with the double-line screw rod through threads. A vacuum arc-extinguishing chamber body is arranged between the first clamping plate and the second clamping plate. According to the utility model, the first clamping plate and the second clamping plate can be driven to move at the same time through the rotation of the double-line screw rod, so that the vacuum arc-extinguishing chamber body is clamped and fixed, and the fixation of the vacuum arc-extinguishing chamber body is more convenient when the vacuum arc-extinguishing chamber body is protected in the fixing body.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum interrupters, and particularly relates to a static end protection device for a vacuum interrupter. Background Art

[0002] A vacuum interrupter is an important switching device in the power transmission process. In order to prevent damage or scratches on the static end of the vacuum interrupter, a protection device is needed to protect the static end of the vacuum interrupter, so as to ensure the quality of the vacuum interrupter.

[0003] Chinese Patent Application No. CN202221320140.3 discloses a static end protection device for a vacuum interrupter, including a vacuum interrupter body. A static end is arranged in the middle of one end of the vacuum interrupter body. A protection structure for the safety protection of the static end is fixedly sleeved on the end of the vacuum interrupter body. The protection structure includes a protective sleeve, a buffer assembly and an anti-tipping assembly. The buffer assembly is fixedly arranged between the protective sleeve and the anti-tipping assembly. The protective sleeve is sleeved on the end of the vacuum interrupter body for wrapping and protecting the static end.

[0004] When the protection device in the above patent is used, it is necessary to rotate two threaded rods separately to make the two arc-shaped clamping strips protect and fix the vacuum interrupter, which makes it inconvenient to fix the vacuum interrupter during protection. Therefore, it is urgent to design a static end protection device for a vacuum interrupter to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a static end protection device for a vacuum interrupter to solve the above deficiencies in the prior art.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A static end protection device for a vacuum interrupter includes a fixed body. An installation cavity is arranged on the outer wall of the top of the fixed body. A chute is opened on the inner wall of the bottom of the installation cavity. Two sliders are arranged inside the chute. The tops of the two sliders are respectively fixed with a clamping plate one and a clamping plate two. An arc surface is arranged on the side where the clamping plate one and the clamping plate two are close to each other. A protective layer is arranged inside the arc surface. A double-threaded screw rod is connected to the inside of the chute through a bearing. One end of the double-threaded screw rod extends to the outside of the fixed body and is fixed with a hand wheel. Both sliders are connected to the double-threaded screw rod through threads. A vacuum interrupter body is arranged between the clamping plate one and the clamping plate two.

[0008] Furthermore, a static end sealing cover is arranged at the bottom of the vacuum interrupter body. The arc surface is adapted to the vacuum interrupter body.

[0009] Furthermore, a protective pad is fixed to the bottom inner wall of the installation cavity, and uniformly distributed protrusions are integrally formed on the top outer wall of the protective pad.

[0010] Furthermore, a slide rail is fixed to the bottom inner wall of the chute, and both of the two sliders are slidably connected to the slide rail.

[0011] Furthermore, a chassis is arranged at the bottom of the fixing body, and mounting holes are arranged on the top outer wall of the chassis.

[0012] Furthermore, a square shaft is integrally formed on the bottom outer wall of the fixing body, a connecting sleeve is integrally formed on the top outer wall of the chassis, and the bottom end of the square shaft is inserted into the inside of the connecting sleeve.

[0013] Furthermore, a shrinkage opening is arranged inside the square shaft, engaging teeth are integrally formed on both outer walls of the square shaft, clamping grooves are arranged on both outer walls of the connecting sleeve, and the engaging teeth are adapted to the clamping grooves.

[0014] In the above technical solution, for a static end protection device of a vacuum interrupter provided by the present utility model, the beneficial effects are as follows: the rotation of the double-threaded screw can drive the first clamping plate and the second clamping plate to move simultaneously, so that the vacuum interrupter body is clamped and fixed, making it more convenient to fix the vacuum interrupter body when it is protected inside the fixing body; through the provided protective layer and protective pad, both the protective layer and the protective pad are made of rubber material, making it not easy to scratch the vacuum interrupter body when it is fixed, thereby achieving a more reliable effect when protecting the vacuum interrupter body; by arranging the square shaft inserted into the inside of the connecting sleeve, the engaging teeth can be directly clamped and fixed with the clamping grooves on the connecting sleeve, making it more convenient to assemble the chassis with the fixing body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings.

[0016] Figure 1 It is a front view structural schematic diagram provided by an embodiment of a static end protection device of a vacuum interrupter of the present utility model.

[0017] Figure 2 It is a structural schematic diagram of the interior of the fixing body provided by an embodiment of a static end protection device of a vacuum interrupter of the present utility model.

[0018] Figure 3 It is a structural schematic diagram of the first clamping plate provided by an embodiment of a static end protection device of a vacuum interrupter of the present utility model.

[0019] Figure 4 Schematic diagram of the vacuum interrupter body structure provided for an embodiment of the static end protection device of the vacuum interrupter of the present utility model.

[0020] Figure 5 Schematic diagram of the enlarged structure at position A provided for an embodiment of the static end protection device of the vacuum interrupter of the present utility model.

[0021] Description of the reference numerals:

[0022] 1 fixing body, 2 installation cavity, 3 sliding groove, 4 slider, 5 first clamping plate, 6 second clamping plate, 7 arc surface, 8 protective layer, 9 double-threaded screw, 10 handwheel, 11 protective pad, 12 protrusion, 13 chassis, 14 installation hole, 15 vacuum interrupter body, 16 static end sealing cover, 17 slide rail, 18 square shaft, 19 contraction port, 20 connecting sleeve, 21 clamping groove, 22 clamping teeth. Specific implementation manners

[0023] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] As Figures 1-5 shown, a static end protection device of a vacuum interrupter provided by an embodiment of the present utility model includes a fixing body 1. An installation cavity 2 is provided on the outer wall of the top of the fixing body 1. A sliding groove 3 is opened on the inner wall of the bottom of the installation cavity 2. Two sliders 4 are provided inside the sliding groove 3. A first clamping plate 5 and a second clamping plate 6 are respectively fixed to the tops of the two sliders 4. An arc surface 7 is provided on the side where the first clamping plate 5 and the second clamping plate 6 are close to each other. A protective layer 8 is provided inside the arc surface 7. A double-threaded screw 9 is connected to the inside of the sliding groove 3 through a bearing. One end of the double-threaded screw 9 extends to the outside of the fixing body 1 and is fixed with a handwheel 10. Both sliders 4 are threadedly connected to the double-threaded screw 9. A vacuum interrupter body 15 is provided between the first clamping plate 5 and the second clamping plate 6.

[0025] Specifically, in this embodiment, it includes a fixing body 1. An installation cavity 2 is provided on the outer wall of the top of the fixing body 1. A sliding groove 3 is opened on the inner wall of the bottom of the installation cavity 2. Two sliders 4 are arranged inside the sliding groove 3. A clamping plate one 5 and a clamping plate two 6 are respectively fixed to the tops of the two sliders 4. The vacuum interrupter is fixed by the clamping plate one 5 and the clamping plate two 6. An arc surface 7 is provided on the side where the clamping plate one 5 and the clamping plate two 6 are close to each other. A protective layer 8 is arranged inside the arc surface 7. The protective layer 8 is made of rubber material, which can effectively prevent the side wall of the vacuum interrupter from being scratched. A double-threaded screw rod 9 is connected to the inside of the sliding groove 3 through a bearing. The double-threaded screw rod 9 has two thread patterns with opposite spiral directions. One end of the double-threaded screw rod 9 extends to the outside of the fixing body 1 and is fixed with a handwheel 10. The double-threaded screw rod 9 is driven to rotate by the handwheel 10. Both sliders 4 are threadedly connected to the double-threaded screw rod 9, so that when the double-threaded screw rod 9 rotates, it can drive the two sliders 4 to approach each other. A vacuum interrupter body 15 is arranged between the clamping plate one 5 and the clamping plate two 6. The vacuum interrupter is fixed by the clamping plate one 5 and the clamping plate two 6.

[0026] A vacuum interrupter static end protection device provided by the present utility model can drive the clamping plate one 5 and the clamping plate two 6 to move simultaneously through the rotation of the double-threaded screw rod 9, so that the vacuum interrupter body 15 is clamped and fixed, making the fixation of the vacuum interrupter body 15 more convenient when it is protected inside the fixing body 1.

[0027] In another embodiment provided by the present utility model, a static end sealing cover 16 is arranged at the bottom of the vacuum interrupter body 15. The static end sealing cover 16 is the static end of the vacuum interrupter body 15. After the vacuum interrupter body 15 is fixed, when the vacuum interrupter body 15 is transported again, the static end sealing cover 16 is not easily scratched. The arc surface 7 is adapted to the vacuum interrupter body 15. The arc surface 7 is used to cooperate with the vacuum interrupter body 15 to make the fixation of the vacuum interrupter body 15 more firm; a protective pad 11 is fixed to the inner wall of the bottom of the installation cavity 2. Uniformly distributed protrusions 12 are integrally formed on the outer wall of the top of the protective pad 11. Both the protective layer 8 and the protective pad 11 are made of rubber material, so that the vacuum interrupter body 15 is not easily scratched when being fixed, thus achieving a more reliable effect when protecting the vacuum interrupter body 15; a slide rail 17 is fixed to the inner wall of the bottom of the sliding groove 3. Both sliders 4 are slidably connected to the slide rail 17. The slide rail 17 is used to make the two sliders 4 move more stably.

[0028] In another embodiment provided by the utility model, a chassis 13 is provided at the bottom of the fixed body 1, and a mounting hole 14 is provided on the top outer wall of the chassis 13, and the chassis 13 can be conveniently bolted to the transmission device of the vacuum arc chamber body 15 by means of the mounting hole 14; a square shaft 18 is integrally formed on the bottom outer wall of the fixed body 1, and the cross section of the square shaft 18 is square, and a connecting sleeve 20 is integrally formed on the top outer wall of the chassis 13, and the cross section of the connecting sleeve 20 is also square, and the bottom end of the square shaft 18 is inserted into the inside of the connecting sleeve 20, and the square shaft 18 can be just inserted into the connecting sleeve 20; A contraction opening 19 is provided inside the square shaft 18, and the contraction opening 19 is used to make the square shaft 18 have a deformation space, so that the square shaft 18 can be elastically deformed after being subjected to force, and the outer walls on both sides of the square shaft 18 are integrally formed with latch teeth 22, and the outer walls on both sides of the connecting sleeve 20 are provided with latch grooves 21, and the latch teeth 22 are adapted to the latch grooves 21. The square shaft 18 is inserted into the interior of the connecting sleeve 20, so that the latch teeth 22 can be directly connected and fixed with the latch grooves 21 on the connecting sleeve 20, thereby making it more convenient to assemble the chassis 13 with the fixed body 1.

[0029] Working principle: When it is necessary to assemble the chassis 13 and the fixed body 1, the square shaft 18 is inserted into the inside of the connecting sleeve 20 so that the slot 21 is engaged with the tooth 22 on the connecting sleeve 20, and the assembly of the chassis 13 and the fixed body 1 is completed; when it is necessary to fix the vacuum arc chamber body 15, the vacuum arc chamber body 15 is placed between the clamping plate 1 5 and the clamping plate 2 6, and the bottom of the vacuum arc chamber body 15 is in contact with the protective pad 11, and then the double-groove screw 9 is driven to rotate by the hand wheel 10, so that the double-groove screw 9 drives the two sliders 4 to approach each other, and then the two sliders 4 respectively drive the clamping plate 1 5 and the clamping plate 2 6 to move, so that the clamping plate 1 5 and the clamping plate 2 6 are close to each other, so that the clamping plate 1 5 and the clamping plate 2 6 fix the vacuum arc chamber body 15.

[0030] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A static end protection device for a vacuum interrupter, characterized in that, It includes a fixing body (1). An installation cavity (2) is provided on the top outer wall of the fixing body (1). A sliding groove (3) is opened on the bottom inner wall of the installation cavity (2). Two sliders (4) are arranged inside the sliding groove (3). Clamping plates one (5) and two (6) are respectively fixed to the tops of the two sliders (4). An arc surface (7) is arranged on the side where the clamping plate one (5) and the clamping plate two (6) are close to each other. A protective layer (8) is arranged inside the arc surface (7). A double-threaded screw rod (9) is connected to the inside of the sliding groove (3) through a bearing. One end of the double-threaded screw rod (9) extends to the outside of the fixing body (1) and is fixed with a hand wheel (10). Both of the two sliders (4) are threadedly connected to the double-threaded screw rod (9). A vacuum interrupter body (15) is arranged between the clamping plate one (5) and the clamping plate two (6).

2. The static end protection device of a vacuum interrupter according to claim 1, characterized in that, A static end sealing cover (16) is arranged at the bottom of the vacuum interrupter body (15). The arc surface (7) is adapted to the vacuum interrupter body (15).

3. The static end protection device of a vacuum interrupter according to claim 1, characterized in that, A protective pad (11) is fixed to the bottom inner wall of the installation cavity (2). Uniformly distributed protrusions (12) are integrally formed on the top outer wall of the protective pad (11).

4. A static end protection device for a vacuum interrupter according to claim 1, characterized in that, A slide rail (17) is fixed to the bottom inner wall of the sliding groove (3). Both of the two sliders (4) are slidably connected to the slide rail (17).

5. The static end protection device of a vacuum interrupter according to claim 1, characterized in that, A chassis (13) is arranged at the bottom of the fixing body (1). Installation holes (14) are arranged on the top outer wall of the chassis (13).

6. The static end protection device of a vacuum interrupter according to claim 5, characterized in that, A square shaft (18) is integrally formed on the bottom outer wall of the fixing body (1). A connecting sleeve (20) is integrally formed on the top outer wall of the chassis (13). The bottom end of the square shaft (18) is inserted into the inside of the connecting sleeve (20).

7. The static end protection device of a vacuum interrupter according to claim 6, characterized in that, A shrinkage opening (19) is arranged inside the square shaft (18). Tooth-like projections (22) are integrally formed on both outer walls of the square shaft (18). Card slots (21) are arranged on both outer walls of the connecting sleeve (20). The tooth-like projections (22) are adapted to the card slots (21).

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