CN214797318U

CN214797318U - Special intelligent drop-out fuse for railway

Info

Publication number: CN214797318U
Application number: CN202120469698.7U
Authority: CN
Inventors: 李永轩; 付梦佳; 王海军
Original assignee: Hebei Shixuan Electric Technology Co ltd
Current assignee: Hebei Shixuan Electric Technology Co ltd
Priority date: 2021-03-04
Filing date: 2021-03-04
Publication date: 2021-11-19
Anticipated expiration: 2031-03-04

Abstract

The utility model discloses a special intelligent drop out fuse of railway, which comprises an insulator, the upper bracket, the lower carriage, fuse tube and fusing sign, the upper and lower both ends of insulator have linked firmly upper bracket and lower carriage respectively, be fixed with last binding post and the last static contact of electricity connection on the upper bracket, be fixed with the lower binding post and the lower static contact of electricity connection on the lower carriage, be provided with the fuse wire in the fuse tube, the both ends of fuse tube outer wall are provided with moving contact and moving contact down respectively, fuse wire one end is fixed on moving contact down and will fuse the sign through compression spring and fix in the fuse tube outside, the fuse wire other end is fixed in upper moving contact copper cap department, compression spring's elasticity will fuse the sign bullet and open after the fuse wire fuses. The utility model discloses a fuse after fusing, the fuse is taken out from the fuse tube rapidly, and the fusing sign is the point of breaking obviously downwards in the rotation down, and the fuse tube does not overturn, avoids meeting strong wind weather alternate discharge. The utility model has the advantages of reasonable design, convenient to use, the practicality is strong.

Description

Special intelligent drop-out fuse for railway

Technical Field

The utility model relates to a drop out fuse technical field especially relates to a special intelligent drop out fuse of railway.

Background

The traditional fuse generally has the problems of poor protection characteristic, high temperature difference, small contact area, stress of a switching-on and switching-off high-voltage fuse wire, narrow switching-off range and the like, and the fuse tube of the traditional drop-out fuse is easy to discharge at intervals in windy weather after being turned over.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a special intelligent drop out fuse of railway solves the above-mentioned problem that exists among the prior art.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the utility model relates to an intelligent drop-out fuse special for railway, which comprises an insulator, an upper bracket, a lower bracket, a fuse tube and a fuse indicating plate, the upper end and the lower end of the insulator are respectively fixedly connected with the upper bracket and the lower bracket, an upper wiring terminal and an upper static contact which are electrically connected are fixed on the upper bracket, a lower wiring terminal and a lower static contact which are electrically connected are fixed on the lower bracket, a fuse wire is arranged in the fuse tube, an upper moving contact and a lower moving contact are respectively arranged at two ends of the outer wall of the fusing tube, one end of the fuse wire is fixed on the lower moving contact, the fusing indication board is fixed on the outer side of the fusing tube through a compression spring, the other end of the fuse wire is fixed at the copper cap of the upper moving contact, the fusing indicator is bounced open by the elastic force of the compression spring after the fuse wire is fused, and the fusing indicator turns downwards to form an obvious disconnection point.

Furthermore, the insulator adopts silicon rubber or high-strength porcelain material as an insulator.

Further, the upper bracket and the lower bracket are made of stainless steel 304.

Further, the upper fixed contact and the lower fixed contact are made of T2 copper.

Still further, the fuse tube adopts a glass fiber wire winding tube.

Furthermore, the upper moving contact part adopts a holding type connection mode.

Furthermore, the lower moving contact adopts a fixed structure.

Furthermore, the lower static contact hook is fixed by double bolts and is provided with an electricity testing grounding device so as to be convenient to overhaul.

Compared with the prior art, the utility model discloses a beneficial technological effect:

the utility model discloses a special intelligent drop out fuse of railway makes the fuse wire be in the state of tension all the time, in order to guarantee the auto-lock of fuse tube at the closing position, circuit and transformer overload or during the short circuit, the fuse wire melts, the fuse wire is taken out from the fuse tube rapidly, the downward rotation of fusing sign is as obvious disconnection point, the fuse tube does not overturn, wherein the fuse tube design is the exhaust formula step by step, solve the contradiction of breaking big or small electric current on same fuse, make this fuse can provide safer operational environment for railway transmission line, reduce unnecessary maintenance and loss, thereby greatly reduced use cost, extension product life. The utility model has the advantages of reasonable design, convenient to use, the practicality is strong.

Drawings

The present invention will be further explained with reference to the following description of the drawings.

Fig. 1 is the utility model discloses a special intelligent drop out fuse of railway's structural schematic diagram.

Description of reference numerals: 1. an insulator; 2. mounting a plate; 3. an upper wiring terminal; 4. an upper static contact; 5. an upper moving contact; 6. a moving contact pull ring; 7. a lower wiring terminal; 8. a lower static contact; 9. a lower moving contact; 10. fusing the tube; 11. fusing the indicator board; 12. compressing the spring.

Detailed Description

As shown in fig. 1, an intelligent drop-out fuse special for a railway comprises an insulator 1, an upper bracket, a lower bracket, a fuse tube 10 and a fuse indicator 11, wherein the upper end and the lower end of the insulator 1 are fixedly connected with the upper bracket and the lower bracket respectively, an upper connecting terminal 3 and an upper static contact 4 which are electrically connected are fixed on the upper bracket, a lower connecting terminal 7 and a lower static contact 8 which are electrically connected are fixed on the lower bracket, a fuse wire is arranged in the fuse tube 10, an upper moving contact 5 and a lower moving contact 9 are respectively arranged at two ends of the outer wall of the fuse tube 10, one end of the fuse wire is fixed on the lower moving contact 9, the fuse indicator 11 is fixed on the outer side of the fuse tube 10 through a compression spring 12, the other end of the fuse wire is fixed at a copper cap of the upper moving contact 5, and the compression spring 12 springs the fuse indicator 11 open after the fuse wire is fused, the fuse indicator 11 is flipped down to form a distinct disconnection point.

When the special intelligent drop-out fuse for the railway is used, the fuse wire is always in a tension state so as to ensure the self-locking of the fuse tube 10 at the switching-on position, when a line and a transformer are overloaded or short-circuited, the fuse wire is fused, the fuse wire is rapidly drawn out from the fuse tube 10, the fused indicator 11 rotates downwards to serve as an obvious disconnection point, and the fuse tube 10 does not turn over; the fuse tube 10 is designed to be of a step-by-step exhaust type, the contradiction of large current and small current when the fuse tube is cut off on the same fuse is solved, the fuse can provide a safer operation environment for a railway transmission line, unnecessary maintenance and loss are reduced, the use cost is greatly reduced, and the service life of a product is prolonged.

Specifically, the insulator 1 adopts silicon rubber or a high-strength ceramic material as an insulator.

Wherein, the insulator 1 is provided with a mounting plate 2.

Specifically, the upper bracket and the lower bracket are made of stainless steel 304.

Specifically, the upper static contact 4 and the lower static contact 8 are made of T2 copper.

Specifically, the fuse tube 10 is a glass fiber winding tube. And, the upper end of the fuse tube 10 is provided with a movable contact pull ring 6.

Specifically, the upper moving contact 5 is connected in a gripping manner.

In the embodiment, the upper contact part adopts a holding type connection mode, the contact area is larger than that of a common drop-out fuse, and the through-current capacity is enhanced. The upper contact connecting part is provided with a locking device, and the outdoor operation is prevented from being influenced by the environment to cause no fault and falling.

Specifically, the lower moving contact 9 is of a fixed structure.

In the embodiment, the lower contact of the fuse tube 10 adopts a fixed structure, and the fuse has a fusing indication board 11 when being fused, so that the breaking capacity is stronger than that of a common fuse, the arc extinguishing time is short, and the fuse is quickly broken due to overcurrent.

Specifically, the lower static contact 8 hook is fixed by double bolts and is provided with an electricity testing grounding device so as to be convenient to overhaul.

In this embodiment, the lower contact couple adopts two bolts to fix, and rate of conductivity is fast, and contact performance is stable, has to test electric earthing device, and the earth bar does not have the department and can hang when can avoiding overhauing.

The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.

Claims

1. The utility model provides a special intelligent drop out fuse of railway which characterized in that: the fuse wire comprises an insulator, an upper support, a lower support, a fuse tube and a fuse indicator, wherein the upper support and the lower support are fixedly connected to the upper end and the lower end of the insulator respectively, an upper wiring terminal and an upper static contact which are electrically connected are fixed on the upper support, a lower wiring terminal and a lower static contact which are electrically connected are fixed on the lower support, a fuse wire is arranged in the fuse tube, an upper moving contact and a lower moving contact are arranged at two ends of the outer wall of the fuse tube respectively, one end of the fuse wire is fixed on the lower moving contact, the fuse indicator is fixed on the outer side of the fuse tube through a compression spring, the other end of the fuse wire is fixed at a copper cap of the upper moving contact, the fuse indicator is bounced off by the elasticity of the compression spring after the fuse wire is fused, and the fuse indicator turns downwards to form an obvious disconnection point.

2. The intelligent drop-out fuse special for the railway as claimed in claim 1, wherein: the insulator adopts silicon rubber or high-strength porcelain material as an insulator.

3. The intelligent drop-out fuse special for the railway as claimed in claim 1, wherein: the upper bracket and the lower bracket are made of stainless steel 304.

4. The intelligent drop-out fuse special for the railway as claimed in claim 1, wherein: the upper static contact and the lower static contact are made of T2 copper.

5. The intelligent drop-out fuse special for the railway as claimed in claim 1, wherein: the fusing tube is a glass fiber wire winding tube.

6. The intelligent drop-out fuse special for the railway as claimed in claim 1, wherein: the upper moving contact part adopts a holding type connection mode.

7. The intelligent drop-out fuse special for the railway as claimed in claim 1, wherein: the lower moving contact adopts a fixed structure.

8. The intelligent drop-out fuse special for railways according to any one of claims 1 to 7, wherein: the lower static contact hook is fixed by double bolts and is provided with an electricity testing grounding device so as to be convenient to overhaul.