CN220272365U - High-reliability load switch - Google Patents

Abstract

The utility model discloses a high-reliability load switch, which comprises a load switch frame, wherein an installation support is fixedly connected to the inner side of the load switch frame, a movable contact is movably installed at the top of the installation support, a fixed contact is installed at the top of the inner wall of the load switch frame, a connecting sheet is installed at the outer side of the fixed contact, one end of the connecting sheet is fixedly connected with an installation column, an installation groove is formed in the installation column, an arc-extinguishing grid sheet is installed in the installation groove, a through hole is formed in the installation column, an inserting rod is movably inserted in the through hole, an inserting hole matched with the inserting rod is formed in the arc-extinguishing grid sheet, a threaded part is arranged at one end of the inserting rod, and a circular plate is fixedly connected to one end of the inserting rod, which is far away from the threaded part, through the inserting rod, the utility model can fix the arc-extinguishing grid sheet, and ensure that the arc-extinguishing grid sheet can play an arc-extinguishing role, thereby greatly improving the reliability of the load switch.

Description

High-reliability load switch

Technical Field

The utility model relates to the technical field of load switches, in particular to a high-reliability load switch.

Background

The load switch is a switching device between a breaker and an isolating switch, and is provided with a simple arc-extinguishing device, can cut off rated load current and a certain overload current, but cannot cut off short-circuit current, and the load switch usually adopts arc-extinguishing grid plates for arc extinction, and is widely used because the arc-extinguishing grid plates are simple in structure and low in cost.

Most of the arc-extinguishing grid plates of the existing load switch are connected to the outer side of the mounting column in a clamping mode through clamping blocks, in actual use, the temperature of the arc-extinguishing grid plates and the temperature of the mounting column are increased through electric arcs generated by the moving contact and the fixed contact, the arc-extinguishing grid plates and the temperature of the mounting column are enabled to deform, when the temperature is too high, the clamping blocks lose fixing effect easily when the temperature is deformed to a certain degree, and then the arc-extinguishing grid plates fall off, the effect of arc extinction is affected, and reliability is low.

Disclosure of Invention

The present utility model is directed to a load switch with high reliability, so as to solve the problems set forth in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a high reliability's load switch, includes the load switch frame, the inboard fixedly connected with mount pad of load switch frame, the top movable mounting of mount pad has the moving contact, the static contact is installed at the top of load switch frame inner wall, the connection piece is installed in the outside of static contact, the one end fixedly connected with erection column of connection piece, be equipped with the mounting groove on the erection column, the internally mounted of mounting groove has the arc extinguishing bars piece, the inside of erection column is equipped with the through-hole, the inside activity grafting of through-hole has the inserted bar, be equipped with on the arc extinguishing bars piece with inserted bar matched with jack, the one end of inserted bar is equipped with screw thread portion, the inside of erection column is equipped with the screw thread groove, the one end fixedly connected with plectane of screw thread portion is kept away from to the inserted bar, one side of plectane is equipped with the cross groove.

As a preferable scheme of the utility model, a clamping groove is formed in the mounting column, the clamping groove is communicated with the mounting groove, and a clamping block matched with the clamping groove is arranged on the outer side of the arc extinguishing grid sheet.

In a preferred embodiment of the present utility model, the material of the insert rod is an insulating material.

As a preferred embodiment of the present utility model, the diameter of the circular plate is larger than the diameter of the through hole.

As a preferable scheme of the utility model, one side of the mounting support is fixedly connected with a support, the top of the support is fixedly connected with a square tube through a bolt, and the top of the square tube is provided with a grounding contact.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the inserted link can fix the arc-extinguishing grid plate, even if the mounting column and the arc-extinguishing grid plate deform at high temperature, the clamping block loses the fixing function, the inserted link can still fix the arc-extinguishing grid plate, the arc-extinguishing grid plate is prevented from falling off, the arc-extinguishing grid plate is ensured to play the arc-extinguishing function, and thus the reliability of the load switch is greatly improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is an enlarged view of the utility model at A in FIG. 1;

FIG. 3 is a partial right side cross-sectional view of the present utility model;

FIG. 4 is an enlarged view of the utility model at B in FIG. 3;

fig. 5 is a schematic structural view of an arc extinguishing gate sheet according to the present utility model.

In the figure: 1. a load switch frame; 2. a mounting support; 3. a moving contact; 4. a support post; 5. square tubes; 6. a ground contact; 7. a connecting sheet; 8. a stationary contact; 9. a cross groove; 10. a circular plate; 11. a mounting groove; 12. a mounting column; 13. arc extinguishing grid plates; 14. a rod; 15. a clamping groove; 16. a through hole; 17. a threaded portion; 18. a thread groove; 19. a clamping block; 20. and a jack.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 5, the present utility model provides a technical solution: the utility model provides a high reliability's load switch, including load switch frame 1, load switch frame 1's inboard fixedly connected with mount pad 2, mount pad 2's top movable mounting has moving contact 3, the static contact 8 is installed at the top of load switch frame 1 inner wall, the connection piece 7 is installed in the outside of static contact 8, the one end fixedly connected with erection column 12 of connection piece 7, be equipped with mounting groove 11 on the erection column 12, the internally mounted of mounting groove 11 has arc-extinguishing bars piece 13, arc-extinguishing bars piece 13 is used for carrying out the arc extinction to the electric arc that produces between moving contact 3 and the static contact 8, the inside of erection column 12 is equipped with through-hole 16, the inside movable grafting of through-hole 16 has inserted bar 14, inserted bar 14 is used for playing fixed action to arc-extinguishing bars piece 13, avoid in the use, arc-extinguishing bars piece 13 and erection column 12 receive high temperature influence and take place deformation, make partial arc-extinguishing bars piece 13 take place to drop, lead to the difficulty and the time extension, the effect to the arc extinction produces very big influence, thereby ensure the reliability of load switch operation, be equipped with on the bar 13, be equipped with the jack 20 with inserted bar 14 matched with, the one end of inserted bar 14, the inside movable insertion bar 17 is equipped with inserted bar 14, the inside movable insertion bar 17, the inside movable insertion bar 14 is equipped with inserted bar 14, the inserted bar 17 is used for carrying out fixed action to the inserted bar 9 with the inserted bar 10, the thread 9 is equipped with the thread groove is used for the inserted bar 17, the one side of thread 9 is kept away from the thread 9, the fixed connection of the inserted bar 17, the thread 9 is used for the inserted bar is equipped with the thread 9.

Wherein, the inside of erection column 12 is equipped with draw-in groove 15, draw-in groove 15 and erection tank 11 intercommunication, and the outside of arc extinguishing bars piece 13 is equipped with draw-in groove 15 matched with fixture block 19, and fixture block 19 cooperates with draw-in groove 15 and is used for carrying out the prefastening to arc extinguishing bars piece 13 to conveniently pass jack 20 on the arc extinguishing bars piece 13 with inserted bar 14.

The material of the insert rod 14 is an insulating material, and the insulating material can prevent the arc extinguishing grid plates 13 from conducting each other, so as to prevent electric arc from diffusing or causing other faults.

Wherein the diameter of the circular plate 10 is larger than the diameter of the through hole 16 so that the circular plate 10 cannot enter the through hole 16.

Wherein, one side fixedly connected with pillar 4 of mount pad 2, the top of pillar 4 passes through bolt fixedly connected with side pipe 5, and ground contact 6 is installed at the top of side pipe 5, and ground contact 6 is used for carrying out the ground connection, when the electric leakage trouble appears, ground contact 6 guides the electric current to ground, improves the security.

Specifically, when the arc-extinguishing bars 13 are installed, the arc-extinguishing bars 13 are taken to be aligned with the installation grooves 11 and inserted, when the arc-extinguishing bars 13 are just inserted into the installation grooves 11, under the action of the clamping blocks 19 and the arc-extinguishing bars 13, the installation columns 12 are slightly spread, the arc-extinguishing bars 13 are continuously inserted, when the clamping blocks 19 are aligned with the clamping grooves 15, the installation columns 12 shrink, the clamping blocks 19 are clamped into the clamping grooves 15, under the action of the clamping blocks 19, the arc-extinguishing bars 13 are prefastened, after the plurality of arc-extinguishing bars 13 are inserted, the inserting rods 14 are taken to be inserted into the through holes 16 and sequentially pass through the insertion holes 20 on the arc-extinguishing bars 13, then the inserting rods 14 are inserted into the cross grooves 9 by using a screwdriver, the threaded parts 17 are screwed into the threaded grooves 18, the inserting rods 14 are fixed, the arc-extinguishing bars 13 are fixed, the fixing of the clamping blocks 19 is still achieved, the inserting rods 14 are fixed to the arc-extinguishing bars 13 even under high temperature, deformation of the installation columns 12 and the arc-extinguishing bars 13 is prevented, the arc-extinguishing bars 19 are lost, the fixing effect is still achieved, the arc-extinguishing bars 13 are fixed, the through the inserting rods 13 are fixed, the through holes 16, the insertion bars are sequentially, the reliability of the arc-extinguishing bars 13 is ensured, and the load is ensured, and the reliability is ensured.

In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby features defining "first," "second," "third," "fourth" may explicitly or implicitly include at least one such feature.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a load switch of high reliability, includes load switch frame (1), the inboard fixedly connected with mount pad (2) of load switch frame (1), the top movable mounting of mount pad (2) has moving contact (3), stationary contact (8) are installed at the top of load switch frame (1) inner wall, its characterized in that: the utility model discloses a fixed contact, including fixed contact, mounting column (12) are installed in the outside of fixed contact (8), be equipped with mounting groove (11), the internally mounted of mounting groove (11) has arc extinguishing bars piece (13), the inside of mounting column (12) is equipped with through-hole (16), the inside activity grafting of through-hole (16) has inserted bar (14), be equipped with on arc extinguishing bars piece (13) with inserted bar (14) matched with jack (20), the one end of inserted bar (14) is equipped with screw portion (17), the inside of mounting column (12) is equipped with screw groove (18), the one end fixedly connected with plectane (10) of screw portion (17) are kept away from to inserted bar (14), one side of plectane (10) is equipped with cross groove (9).

2. A high reliability load switch according to claim 1, wherein: the inside of erection column (12) is equipped with draw-in groove (15), draw-in groove (15) with erection tank (11) intercommunication, the outside of arc extinguishing bars piece (13) be equipped with draw-in groove (15) matched with fixture block (19).

3. A high reliability load switch according to claim 1, wherein: the inserted link (14) is made of insulating materials.

4. A high reliability load switch according to claim 1, wherein: the diameter of the circular plate (10) is larger than the diameter of the through hole (16).

5. A high reliability load switch according to claim 1, wherein: one side fixedly connected with pillar (4) of erection support (2), the top of pillar (4) is through bolt fixedly connected with side's pipe (5), ground contact (6) are installed at the top of side's pipe (5).