CN216749797U

CN216749797U - Drop-out fuse

Info

Publication number: CN216749797U
Application number: CN202123029385.9U
Authority: CN
Inventors: 宋红育; 王永和; 王亚; 杜传伟
Original assignee: Zhejiang Palladium Platinum Lithium Electric Co ltd
Current assignee: Zhejiang Palladium Platinum Lithium Electric Co ltd
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-06-14
Anticipated expiration: 2031-12-02

Abstract

The utility model discloses a drop out fuse, including insulating terminal, insulating terminal one side is provided with the ground connection post, insulating terminal's top and bottom all are provided with the installation end, are located the insulating terminal top installation end one end fixedly connected with upper end contact, upper end contact bottom one side is provided with the fuse tube, the top and the bottom periphery of fuse tube have all cup jointed the ferrule, are located insulating terminal bottom bolt fixedly connected with installed part is passed through to installation end one end, is located the fuse tube bottom ferrule one side with installed part one side is rotated and is connected. This kind of drop out fuse, through the shell fragment that sets up in fuse tube top looks joint, and reset spring as the support, improves the structural strength at joint position to and conveniently carry out the joint with the connector link through the block tongue that sets up, thereby hold the joint position at fuse tube top, prevent that joint department from taking place to drop, improve junction structural strength.

Description

Drop-out fuse

Technical Field

The utility model relates to a fuse technical field specifically is a drop out fuse.

Background

The most commonly used short-circuit protection switch for drop-out fuse distribution line branch line and distribution transformer. The drop-out fuse is installed on a 10kV distribution line branch line, the power failure range can be shortened, and the drop-out fuse has an obvious disconnection point, has the function of an isolating switch and creates a safe operation environment for maintenance section lines and equipment. The protective device is arranged on a distribution transformer and can be used as the main protection of the distribution transformer. The device has the characteristics of economy, convenient operation, strong adaptability to outdoor environment and the like, is widely applied to the primary side of a 10kV distribution line and a distribution transformer for protection and equipment switching and cutting operation, and is popularized.

The traditional clamping structure of the fuse tube of the drop-out fuse is complex, the operation is complex in the power transmission and outage process, and the phenomenon that the clamping structure of the fuse tube is not firm and loosens easily occurs. Therefore, we improve this and propose a drop-out fuse.

SUMMERY OF THE UTILITY MODEL

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

the utility model relates to a drop out fuse, including insulating terminal, insulating terminal one side is provided with the ground connection post, insulating terminal's top and bottom all are provided with the installation end, are located the insulating terminal top installation end one end fixedly connected with upper end contact, upper end contact top one end fixedly connected with connects corner fittings, upper end contact bottom one side is provided with the fuse tube, the ferrule has all been cup jointed with the bottom periphery at the top of fuse tube, is located insulating terminal bottom bolt fixedly connected with installed part is passed through to installation end one end, installed part one side is provided with connects corner fittings two, is located fuse tube bottom ferrule one side with installed part one side is rotated and is connected.

As an optimal technical scheme of the utility model, be located the fuse tube top ferrule one side fixedly connected with action ring, and be located the action ring opposite side the ferrule periphery is rotated and is connected with the connector link, upper end contact bottom one side is provided with the block tongue, block tongue one side with connector link one side joint.

As a preferred technical scheme of the utility model, upper end contact bottom the block tongue one side is provided with the shell fragment, shell fragment top fixedly connected with reset spring, the shell fragment bottom with fuse tube top looks joint.

As a preferred technical scheme of the utility model, installed part one side fixedly connected with baffle.

As a preferred technical scheme of the utility model, the inside draw-in groove of having seted up of installed part, the inside earmuff that is provided with of draw-in groove.

As an optimized technical solution of the present invention, the metal hoop the operation ring and the installation member are all made of brass.

The utility model has the advantages that:

1. according to the drop-out fuse, the arranged elastic sheet is clamped at the top of the fuse tube, and the reset spring is used as a support, so that the structural strength of the clamped part can be improved, the drop-out is prevented, and the fuse tube is conveniently disconnected therewith;

2. according to the drop-out fuse, the clamping tongue is conveniently clamped with the connecting buckle, so that the clamping position at the top of the fuse tube is pulled, the clamping position is prevented from falling off, and the structural strength of the connecting position is improved;

3. this kind of drop out fuse, the baffle through setting up both can not have the angle of whereabouts when the joint to the fuse tube to restrict, support the fuse when making things convenient for the fuse inside to alternate the fuse again, make things convenient for the fuse to straighten inside the fuse tube.

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 principles of the invention. In the drawings:

fig. 1 is an overall schematic view of a drop-out fuse of the present invention;

fig. 2 is an enlarged schematic view of a drop-out fuse of the present invention at a point a in fig. 1;

fig. 3 is an enlarged schematic diagram of a drop-out fuse at B in fig. 1 according to the present invention.

In the figure: 1. an insulated terminal; 101. an installation end; 2. a ground post; 3. an upper end contact; 301. Connecting a first corner fitting; 302. connecting a second corner fitting; 4. a fuse tube; 5. a ferrule; 6. a mounting member; 601. a card slot; 7. an operating ring; 8. a connecting buckle; 9. a latch; 10. a spring plate; 11. A baffle plate; 12. ear muffs.

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 fig. 1-3, the utility model relates to a drop out fuse, including insulating terminal 1, insulating terminal 1 one side is provided with ground connection post 2, insulating terminal 1's top and bottom all are provided with installation end 101, be located installation end 101 one end fixedly connected with upper end contact 3 at insulating terminal 1 top, 3 top one end fixedly connected with of upper end contact

connect corner fittings

301, 3 bottom one side of upper end contact are provided with fuse tube 4, ferrule 5 has all been cup jointed with the bottom periphery in the top of fuse tube 4, bolt fixedly connected with installed part 6 is passed through to installation end 101 one end that is located insulating terminal 1 bottom, installed part 6 one side is provided with connects corner fittings two 302, ferrule 5 one side that is located fuse tube 4 bottom is rotated with installed part 6 one side and is connected.

Wherein, be located ferrule 5 one side fixedly connected with operating ring 7 at 4 tops of fuse tube, and be located ferrule 5 periphery of 7 opposite sides of operating ring and rotate and be connected with connector link 8, upper end contact 3 bottom one side is provided with block tongue 9, and block tongue 9 one side and 8 one side joints of connector link, through the convenient joint with connector link 8 of block tongue 9 that sets up to hold the joint position at 4 tops of fuse tube, prevent that joint department from taking place to drop, improve junction structural strength.

Wherein, the latch 9 one side of upper end contact 3 bottom is provided with shell fragment 10, and shell fragment 10 top fixedly connected with reset spring, shell fragment 10 bottom and fuse tube 4 top looks joint, can make things convenient for the joint at fuse tube 4 top through shell fragment 10 that sets up with fuse tube 4 top looks joint, improve the stability of joint structure.

Wherein, 6 one side fixedly connected with baffles 11 of installed part, baffle 11 through setting up both can not have the angle of whereabouts when the joint to fuse tube 4 and restrict, support the fuse when making things convenient for the fuse of 4 inside interlude fuses again, make things convenient for the fuse to straighten in fuse tube inside.

Wherein, installed part 6 is inside to be seted up draw-in groove 601, and draw-in groove 601 is inside to be provided with trunnion sleeve 12, and trunnion sleeve 12 through setting up is convenient when closing a floodgate, with the trunnion card inside draw-in groove 601.

Wherein, ferrule 5, operation ring 7 and installed part 6 all are the brass material, both can increase life through ferrule 5, operation ring 7 and installed part 6 all are the brass material, can increase electric conductive property again.

The working principle is as follows: when the drop-out fuse is used, the drop-out fuse is arranged at the top of a power converter and is connected with a power transmission line, the drop-out fuse penetrates into the operation ring 7 through a power transmission rod, the fuse tube 4 is pushed, the top of the fuse tube 4 is in contact with the bottom of the elastic sheet 10, pressure is applied, the fuse tube 4 is clamped under the tension action of the reset spring, the position of the connecting buckle 8 is adjusted at the moment, the connecting buckle 8 is clamped with the main clamping tongue 9, the trunnion sleeve 12 rotates along with the elastic sheet 10 in the process that the fuse tube 4 moves upwards to be in contact with the elastic sheet 10, the baffle 11 moves downwards at the moment, the fuse wire in the fuse tube is pulled, and a connected circuit is more stable; the convenient joint that carries out with connector link 8 of block tongue 9, thereby hold the joint position at 4 tops of fuse tube, prevent that joint department from taking place to drop, improve junction structural strength, shell fragment 10 can with 4 tops of fuse tube joint mutually, make things convenient for the joint at 4 tops of fuse tube, improve the stability of joint structure, trunnion sleeve 12 is convenient when closing a floodgate, with trunnion card inside draw-in groove 601, ferrule 5, operating ring 7 and installed part 6 all can increase life for the brass material, can increase electric conductive property again.

Finally, it should be noted that: in the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

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. The utility model provides a drop out fuse, includes insulating terminal (1), its characterized in that, insulating terminal (1) one side is provided with ground connection post (2), the top and the bottom of insulating terminal (1) all are provided with installation end (101), are located insulating terminal (1) top installation end (101) one end fixedly connected with upper end contact (3), upper end contact (3) top one end fixedly connected with connects corner fittings (301), upper end contact (3) bottom one side is provided with fuse tube (4), the top and the bottom periphery of fuse tube (4) have all cup jointed ferrule (5), are located insulating terminal (1) bottom installation end (101) one end is through bolt fixedly connected with installed part (6), installed part (6) one side is provided with connects corner fittings two (302), is located fuse tube (4) bottom ferrule (5) one side with installed part (6) one side rotates and is connected.

2. The drop-out fuse as claimed in claim 1, wherein an operating ring (7) is fixedly connected to one side of the ferrule (5) at the top of the fuse tube (4), a connecting buckle (8) is rotatably connected to the periphery of the ferrule (5) at the other side of the operating ring (7), a clamping tongue (9) is arranged at one side of the bottom of the upper end contact (3), and one side of the clamping tongue (9) is clamped with one side of the connecting buckle (8).

3. A drop-out fuse as claimed in claim 2, wherein a spring (10) is provided at one side of the latch (9) at the bottom of the upper contact (3), a return spring is fixedly connected to the top of the spring (10), and the bottom of the spring (10) is connected with the top of the fuse tube (4) in a snap-fit manner.

4. A drop fuse as claimed in claim 1, characterised in that a blocking plate (11) is fixedly connected to one side of the mounting member (6).

5. A drop-out fuse as claimed in claim 1, characterised in that the mounting member (6) has a slot (601) formed therein, and the slot (601) has an trunnion sleeve (12) formed therein.

6. A drop fuse as claimed in claim 2, wherein the ferrule (5), the operating ring (7) and the mounting member (6) are all of brass.