CN210956585U

CN210956585U - Safe type drop out fuse convenient to change

Info

Publication number: CN210956585U
Application number: CN202020025593.8U
Authority: CN
Inventors: 陈刚健; 郭建平; 叶伟; 马玉蛟
Original assignee: Ccre Electric Co ltd
Current assignee: Ccre Electric Co ltd
Priority date: 2020-01-07
Filing date: 2020-01-07
Publication date: 2020-07-07
Anticipated expiration: 2030-01-07

Abstract

The utility model discloses a safe drop-out fuse convenient to change, the top of mount pad has been seted up the mounting groove, the internally mounted of mounting groove has lower connecting rod, the top of mount pad is located lower connecting rod both sides position department and symmetrically installs spacing bolt, the one end at lower connecting rod top is connected with insulating main part, the mid-mounting of insulating main part has the connecting block, the one end of protection box inside and the position department that the connecting block corresponds install the fixed block, the middle part of fixed block is seted up flutedly, fixing bolt is installed at the top of fixed block, the utility model discloses the structure is scientific and reasonable, and convenience safe in utilization is convenient, through the cooperation use of fixed block and fixing bolt, is convenient for, simultaneously through the cooperation use of mounting groove and spacing bolt, will descend the connecting rod fixed, further fix whole fuse, avoid using the welded mode to lead to dismantling the loaded down with trivial details operating personnel that is unfavorable for the construction of installation.

Description

Safe type drop out fuse convenient to change

Technical Field

The utility model relates to a fuse technical field specifically is safe type drop out fuse convenient to change.

Background

The drop-out fuse is a short-circuit protection switch most commonly used for 10kV distribution line branch lines and distribution transformers, has the characteristics of economy, convenient operation, strong adaptability to outdoor environment and the like, is widely applied to the primary side of the 10kV distribution line and distribution transformers for protection and equipment switching and cutting operation, and for this reason, the Chinese patent discloses a drop-out fuse with the application number of 201821830807, the fuse wire can not be broken when the fuse wire is replaced, the waste of materials can be avoided, and the fuse wire replacement time can be shortened;

but this patent has following shortcoming, and drop out fuse is through electric welding fixed connection on the support frame, and difficult dismantlement is changed, brings very big inconvenience for the maintainer, has reduced work efficiency, so the utility model provides a safe type drop out fuse convenient to change satisfies people's demand.

SUMMERY OF THE UTILITY MODEL

The utility model provides a safe type drop out fuse convenient to change can effectively solve the drop out fuse that proposes in the above-mentioned background art and be through electric welding fixed connection on the support frame, and difficult dismantlement is changed, brings very big inconvenience for the maintainer, has reduced work efficiency's problem.

In order to achieve the above object, the utility model provides a following technical scheme: the safe drop-out fuse convenient to replace comprises a protective box body, wherein the bottom end inside the protective box body is connected with a mounting seat, the top of the mounting seat is provided with a mounting groove, the inside of the mounting groove is provided with a lower connecting rod, the bottom end of the middle part of the lower connecting rod is connected with a lower connecting terminal, the top of the mounting seat is symmetrically provided with limiting bolts at the positions at the two sides of the lower connecting rod, one end of the top of the lower connecting rod is connected with an insulating main body, the middle part of the insulating main body is provided with a connecting block, a fixed block is arranged at the position corresponding to the connecting block at one end in the protective box body, a groove is arranged in the middle of the fixed block, the top of the fixed block is provided with a fixed bolt, the top of the insulating main body is connected with an upper connecting rod, an upper connecting terminal is mounted in the middle of the top end of the upper connecting rod, and one end of the upper connecting rod is connected with a fuse tube;

the protection door is installed to the one end of protection box, the one end that the protection door was kept away from to the protection box is installed the transparent plate, the one end of protection box is located the embedding of transparent plate below position department and installs the ventilation pipe, dry cavity has been seted up to the inside of ventilation pipe, dry cavity's inside packing has the drier, the visor is installed to the one end of ventilation pipe.

Preferably, buffer springs are symmetrically installed at two ends inside the protection box body, one end of each buffer spring is connected with an arc-shaped clamping block, and a pulling block is installed at the top of each arc-shaped clamping block.

Preferably, the limiting bolt is connected with the mounting seat through threads, and the bottom end of the limiting bolt is attached to the top end of the lower connecting rod.

Preferably, the fixed block is embedded into the groove, the fixing bolt penetrates through the fixed block and the connecting block, and the fixing bolt is connected with the fixed block and the connecting block through threads.

Preferably, the inside of the protective cover is provided with a vent hole, and the protective cover is in threaded connection with the vent pipe.

Preferably, the cambered surface of the arc-shaped clamping block is attached to the surface of the insulating main body.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has the advantages of being scientific and reasonable in structure, convenience safe in utilization:

1. be provided with mount pad, mounting groove, spacing bolt, fixed block, recess and fixing bolt, use through the cooperation of fixed block and fixing bolt, be convenient for fix the insulating main part, use through the cooperation of mounting groove and spacing bolt simultaneously, will descend the connecting rod fixed, further fix whole fuse, avoid using welded mode to lead to dismantling the loaded down with trivial details operating personnel that is unfavorable for the construction of installation, improved work efficiency.

2. Be provided with the protection box, the guard gate, the transparent plate, ventilation pipe and drier, use through the cooperation of protection box and guard gate, protect and do not influence subsequent maintenance to whole fuse, avoid the working element of fuse to be influenced the normal use of fuse by the weather corrosion, utilize the working condition that the transparent plate can the internal element of direct observation protection box, improved work efficiency, use through the cooperation of ventilation pipe and drier simultaneously, guarantee the internal air drying of protection box.

3. Be provided with buffer spring, arc clamp splice and draw the piece, use through the cooperation of buffer spring and arc clamp splice, play shock attenuation cushioning effect to the fuse, avoid external vibration to make the fuse element drop and lead to unable normal use, improved the practicality of device.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of the internal structure of the protective box of the present invention;

FIG. 3 is a schematic view of the area A in FIG. 2 according to the present invention;

fig. 4 is a schematic view of the mounting structure of the connecting block of the present invention.

Reference numbers in the figures: 1. a protective box body; 2. a mounting seat; 3. mounting grooves; 4. a lower connecting rod; 5. a lower connection terminal; 6. a limit bolt; 7. an insulating body; 8. connecting blocks; 9. a fixed block; 10. a groove; 11. fixing the bolt; 12. an upper connecting rod; 13. an upper connection terminal; 14. a fuse tube; 15. a protective door; 16. a transparent plate; 17. a vent pipe; 18. a drying chamber; 19. a desiccant; 20. a protective cover; 21. a buffer spring; 22. an arc-shaped clamping block; 23. and (5) pulling the block.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example (b): as shown in figures 1-4, the utility model provides a safe drop-out fuse with easy replacement technical scheme, the bottom end inside the protection box body 1 is connected with a mounting seat 2, the top of the mounting seat 2 is provided with a mounting groove 3, the inside of the mounting groove 3 is provided with a lower connecting rod 4, the bottom end of the middle part of the lower connecting rod 4 is connected with a lower connecting terminal 5, the top of the mounting seat 2 is symmetrically provided with a limit bolt 6 at the two sides of the lower connecting rod 4, the limit bolt 6 is connected with the mounting seat 2 through screw threads, the bottom end of the limit bolt 6 is attached to the top end of the lower connecting rod 4, the lower connecting rod 4 is fixed inside the mounting groove 3 by the limit bolt 6, so that the fuse is more stably installed, one end at the top of the lower connecting rod 4 is connected with an insulating main body 7, the middle part of the insulating main body 7 is provided with, the middle of the fixing block 9 is provided with a groove 10, the top of the fixing block 9 is provided with a fixing bolt 11, the fixing block 9 is embedded into the groove 10, the fixing bolt 11 penetrates through the fixing block 9 and the connecting block 8, the fixing bolt 11 is in threaded connection with the fixing block 9 and the connecting block 8, the connecting block 8 is fixed with the fixing block 9 through the fixing bolt 11, the whole fuse is further fixed, the problem that the disassembling and assembling are complex and are not beneficial to construction of operators due to the welding mode is avoided, the working efficiency is improved, the top of the insulating main body 7 is connected with an upper connecting rod 12, an upper connecting terminal 13 is arranged in the middle of the top end of the upper connecting rod 12, and one end;

a protective door 15 is arranged at one end of the protective box body 1, the protective box body 1 protects the fuse and prevents working elements of the fuse from being rusted by wind and rain to influence the normal use of the fuse, the protective door 15 is convenient for overhauling elements inside the protective box body 1, a transparent plate 16 is arranged at one end of the protective box body 1 far away from the protective door 15, the working state of the elements inside the protective box body 1 can be observed without opening the protective box body 1, a vent pipe 17 is embedded and arranged at the position, below the transparent plate 16, of one end of the protective box body 1, a drying chamber 18 is arranged inside the vent pipe 17, a drying agent 19 is filled inside the drying chamber 18, a protective cover 20 is arranged at one end of the vent pipe 17, a vent hole is arranged inside the protective cover 20, the protective cover 20 is in threaded connection with the vent pipe 17, the protective cover 20 is convenient to open, buffer spring 21's one end is connected with arc clamp splice 22, and arc clamp splice 22's cambered surface is laminated with insulating main part 7's surface mutually, uses through buffer spring 21 and arc clamp splice 22's cooperation, plays shock attenuation cushioning effect to the fuse, avoids external vibration to make the fuse element drop and lead to unable normal use, has improved the practicality of device, and pull piece 23 is installed at arc clamp splice 22's top.

The utility model discloses a theory of operation and use flow: in the process of using the safe drop-out fuse convenient to replace, firstly, the protective door 15 is opened, the arc-shaped clamping block 22 is pulled to move outwards by the pulling block 23, the buffer spring 21 is compressed, the fuse is taken and integrally placed in the protective box body 1, the lower connecting rod 4 is embedded into the mounting groove 3, the connecting block 8 is embedded into the groove 10, the fixing bolt 11 is screwed, the connecting block 8 and the groove 10 are fixed, the limiting bolt 6 is screwed, the bottom end of the limiting bolt 6 is tightly attached to the surface of the lower connecting rod 4, then the pulling block 23 is loosened, the buffer spring 21 extends, and the arc-shaped clamping block 22 is driven to move forwards and is attached to the surface of the insulating main body 7;

connect the circuit respectively in connecting terminal 5 and last connecting terminal 13 down, then close guard gate 15, protection box 1 and guard gate 15 guarantee that the fuse can not receive external foreign matter and damage, buffer spring 21 and arc clamp splice 22 play good shock attenuation buffering effect to the fuse, the inside circulation of air of protection box 1 has been guaranteed to ventilation pipe 17, moisture and moisture in desiccant 19 absorbs the air simultaneously, if need change desiccant 19, only need twist visor 20, can change desiccant 19.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Safe type drop out fuse convenient to change, including protection box (1), its characterized in that: the bottom of the interior of the protection box body (1) is connected with a mounting seat (2), a mounting groove (3) is formed in the top of the mounting seat (2), a lower connecting rod (4) is installed in the mounting groove (3), a lower connecting terminal (5) is connected to the bottom of the middle of the lower connecting rod (4), limiting bolts (6) are symmetrically installed at positions, located on two sides of the lower connecting rod (4), of the top of the mounting seat (2), an insulating main body (7) is connected to one end of the top of the lower connecting rod (4), a connecting block (8) is installed in the middle of the insulating main body (7), a fixing block (9) is installed at a position, corresponding to the connecting block (8), of one end of the interior of the protection box body (1), a groove (10) is formed in the middle of the fixing block (9), and a, the top of the insulating main body (7) is connected with an upper connecting rod (12), the middle part of the top end of the upper connecting rod (12) is provided with an upper connecting terminal (13), and one end of the upper connecting rod (12) is connected with a fuse tube (14);

protection door (15) are installed to the one end of protection box (1), transparent plate (16) are installed to the one end that protection door (15) were kept away from in protection box (1), the one end of protection box (1) is located transparent plate (16) below position department embedding and installs ventilation pipe (17), drying chamber (18) have been seted up to the inside of ventilation pipe (17), the inside packing of drying chamber (18) has drier (19), visor (20) are installed to the one end of ventilation pipe (17).

2. The easy-to-replace safety drop-out fuse of claim 1, further comprising: buffer spring (21) are installed to inside both ends symmetry of protection box (1), the one end of buffer spring (21) is connected with arc clamp splice (22), pull piece (23) are installed at the top of arc clamp splice (22).

3. The easy-to-replace safety drop-out fuse of claim 1, further comprising: the limiting bolt (6) is connected with the mounting seat (2) through threads, and the bottom end of the limiting bolt (6) is attached to the top end of the lower connecting rod (4).

4. The easy-to-replace safety drop-out fuse of claim 1, further comprising: fixed block (9) embedding recess (10) inside, fixing bolt (11) run through in fixed block (9) and connecting block (8), all through threaded connection between fixing bolt (11) and fixed block (9) and connecting block (8).

5. The easy-to-replace safety drop-out fuse of claim 1, further comprising: the inside of visor (20) is seted up the ventilation hole, pass through threaded connection between visor (20) and ventilation pipe (17).

6. The replaceable safety drop-out fuse of claim 2, wherein: the cambered surface of the arc-shaped clamping block (22) is attached to the surface of the insulating main body (7).