CN219435804U

CN219435804U - Drop-out fuse

Info

Publication number: CN219435804U
Application number: CN202320430961.0U
Authority: CN
Inventors: 刘妮; 宫本波; 刘申军; 宋鹏杰; 宋文良; 张建明
Original assignee: Weihai Deliyuan Power Equipment Co ltd
Current assignee: Weihai Deliyuan Power Equipment Co ltd
Priority date: 2023-03-09
Filing date: 2023-03-09
Publication date: 2023-07-28
Anticipated expiration: 2033-03-09

Abstract

The utility model discloses a drop-out fuse, which belongs to the technical field of drop-out fuses, and the technical scheme is characterized by comprising an insulating porcelain bottle, wherein an upper mounting plate and a lower mounting plate which are parallel to each other are respectively fixedly connected to the upper end and the lower end of the outer wall of the insulating porcelain bottle, a fuse tube is melted and then falls into a supporting sleeve, and the supporting sleeve plays a role in supporting and buffering the fuse tube, so that the situation that the fuse tube breaks due to larger impact force after rotating for half a circle is avoided. If the fuse tube bottom breaks with the link junction, two insurance ropes play last protection, firmly connect the fuse tube to avoid the fuse tube to fall from the high altitude and smash the passerby, improve the security, solved the fuse tube because the swing of strong wind or fuse tube easily drops to the ground when breaking, cause the fuse tube to break, lead to can not in time resume equipment operation, take place even the fuse tube to fall to smash the circumstances emergence of injury people, the not high problem of security.

Description

Drop-out fuse

Technical Field

The utility model relates to the technical field of drop-out fuses, in particular to a drop-out fuse.

Background

When the current exceeds a specified value, the fuse melts with heat generated by the fuse to break the circuit, so that the fuse is widely applied to high-low voltage distribution systems, control systems and electric equipment as a protector for short circuit and overcurrent. The high-voltage drop-out fuse is one of the important devices in a distribution line, is arranged on the high-voltage side of the distribution transformer or on the branch line of the distribution line, is used as short circuit, overload protection, on-off and on-off load current of the transformer and the line, is connected in series in a protected circuit, and when the circuit or the device in the circuit is overloaded or fails, the fuse heats and melts, so that the circuit is cut off, and the purpose of protecting the circuit or the device is achieved.

However, when the fuse tube is disconnected, the fuse tube is easy to fall off and fall down due to strong wind or swing of the fuse tube, so that the fuse tube is broken, the operation of the device cannot be recovered in time, even the situation that the fuse tube falls down and injures a person occurs, and the safety is not high.

Disclosure of Invention

The present utility model is directed to the above problems, and provides a drop-out fuse to solve the above problems.

The utility model is realized in such a way that the drop-out fuse comprises an insulating porcelain bottle and an anti-drop device, wherein the upper end and the lower end of the outer wall of the insulating porcelain bottle are respectively and fixedly connected with an upper mounting plate and a lower mounting plate which are parallel to each other, a fuse tube is arranged between the upper mounting plate and the lower mounting plate, the top end of the fuse tube is in buckle connection with the upper mounting plate, the other end of the lower mounting plate is fixedly connected with a connecting frame, and the bottom of the fuse tube is in rotary connection with the connecting frame. The anti-drop device is located on the right side of the connecting frame and is used for preventing the fuse tube from dropping.

In order to support the buffer fuse tube conveniently, the drop-out fuse is preferably provided with the drop-out preventing device which comprises a fixed block, wherein the fixed block is fixedly connected to the right side wall of the connecting frame, the other end of the fixed block is fixedly connected with a connecting rod, and the other end of the connecting rod is fixedly connected with a supporting sleeve.

In order to prevent the fuse tube from falling, the drop-out prevention device of the utility model preferably further comprises two safety ropes, wherein the two safety ropes are respectively and fixedly connected to the front side and the rear side of the fixed block, and the other ends of the two safety ropes are respectively and fixedly connected with the front side and the rear side of the bottom of the fuse tube.

In order to improve the connection firmness of the fixed block and the connecting rod, the bottom of the connecting frame is fixedly connected with a supporting plate, and the upper end surface of the supporting plate is fixedly connected with two reinforcing rods which are respectively and fixedly connected with the fixed block and the connecting rod.

In order to buffer impact force, the cross section of the supporting sleeve is preferably of a U-shaped structure, and the inner side of the supporting sleeve is fixedly connected with a buffer pad made of rubber materials.

In order to improve the safety and the firmness, the drop-out fuse is preferably made of nylon chemical fiber.

Compared with the prior art, the utility model has the beneficial effects that:

after the fuse tube is in short circuit and is melted, the fuse tube is disconnected and rotates by taking the bottom of the fuse tube as the center, an open circuit is formed, the fuse tube is melted and falls into the supporting sleeve, the supporting sleeve plays a role in supporting and buffering the fuse tube, and therefore the situation that the fuse tube is broken due to large impact force after the fuse tube rotates for half a circle is avoided, and the fuse tube is effectively prevented from falling off. If the bottom of the fuse tube is broken at the joint of the connecting frame, the two safety ropes play a role in final protection, and the fuse tube is firmly connected, so that the fuse tube is prevented from falling from the high altitude and injuring passers-by, and the safety is improved. The setting of backup pad is used for fixed stiffener, and the stiffener improves the connection fastness of fixed block and connecting rod, avoids fixed block and connecting rod fracture, further improves the security. The cross section of the supporting sleeve is of a U-shaped structure and is matched with the cylindrical fuse tube, so that the fuse tube is better supported; the buffer cushion is made of rubber, so that impact force can be effectively buffered after the fuse tube falls into the supporting sleeve, and vibration at the bottom of the fuse tube and the connecting frame is reduced, thereby avoiding breakage; the safety rope is woven by nylon chemical fiber, has good tensile effect, is made of insulating materials, and improves safety while guaranteeing connection firmness.

Drawings

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

FIG. 2 is an enlarged view of the structure of the portion a of the present utility model;

FIG. 3 is a cross-sectional view of the support sleeve of the present utility model;

in the figure, 1, an insulating porcelain bottle; 2. an upper mounting plate; 3. a lower mounting plate; 4. a fuse tube; 5. a connecting frame; 6. a fixed block; 7. a connecting rod; 8. a support sleeve; 9. a safety rope; 10. a support plate; 11. a reinforcing rod; 12. and a cushion pad.

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. 1-3, a drop-out fuse includes an insulating porcelain bottle 1 and an anti-drop device, wherein an upper mounting plate 2 and a lower mounting plate 3 parallel to each other are fixedly connected to the upper and lower ends of the outer wall of the insulating porcelain bottle 1, a fuse tube 4 is arranged between the upper mounting plate 2 and the lower mounting plate 3, the top end of the fuse tube 4 is in snap connection with the upper mounting plate 2, a connecting frame 5 is fixedly connected to the other end of the lower mounting plate 3, and the bottom of the fuse tube 4 is in rotational connection with the connecting frame 5. The drop prevention means is located on the right side of the connecting frame 5 for preventing the fuse tube 4 from dropping.

In this embodiment: the upper mounting plate 2 and the lower mounting plate 3 are used for mounting the fuse tube 4, the top of the fuse tube 4 is in buckling connection with the upper mounting plate 2, and the bottom of the fuse tube is in rotating connection with the connecting frame 5.

Specifically, the anti-falling device comprises a fixed block 6, the fixed block 6 is fixedly connected to the right side wall of the connecting frame 5, the other end of the fixed block 6 is fixedly connected with a connecting rod 7, and the other end of the connecting rod 7 is fixedly connected with a supporting sleeve 8. After the fuse tube 4 is fused in a short circuit, the fuse tube 4 is disconnected and rotates by taking the bottom of the fuse tube 4 as the center to form an open circuit, the fuse tube 4 is fused and then falls into the supporting sleeve 8, the supporting sleeve 8 plays a role in supporting and buffering the fuse tube 4, and therefore the situation that the fuse tube 4 breaks due to large impact force after the fuse tube 4 rotates for half a circle is avoided, and the fuse tube 4 is effectively prevented from falling off.

The anti-drop device further comprises two safety ropes 9, wherein the two safety ropes 9 are respectively and fixedly connected to the front side and the rear side of the fixed block 6, and the other ends of the two safety ropes 9 are respectively and fixedly connected with the front side and the rear side of the bottom of the fuse tube 4. If the bottom of the fuse tube 4 breaks at the joint of the connecting frame 5, the two safety ropes 9 play a role in final protection, and the fuse tube 4 is firmly connected, so that the fuse tube 4 is prevented from falling from high altitude and injuring passers by crashes, and the safety is improved.

The bottom of the connecting frame 5 is fixedly connected with a supporting plate 10, and the upper end surface of the supporting plate 10 is fixedly connected with two reinforcing rods 11 which are respectively fixedly connected with the fixed block 6 and the connecting rod 7. The backup pad 10 is used for fixed stiffener 11, and stiffener 11 improves the connection fastness of fixed block 6 and connecting rod 7, avoids fixed block 6 and connecting rod 7 fracture, further improves the security.

The cross section of the supporting sleeve 8 is of a U-shaped structure, and the inner side of the supporting sleeve 8 is fixedly connected with a buffer pad 12 made of rubber. The cross section of support cover 8 is U-shaped structure, matches with columniform fuse tube to better support fuse tube 4, blotter 12 is the rubber material, can effectively cushion impact force after fuse tube 4 falls into support cover 8 inside, reduces the vibrations of fuse tube 4 bottom and link 5 department, thereby avoids the fracture.

The safety rope 9 is woven by nylon chemical fiber. The safety rope 9 is woven by nylon chemical fiber, has good tensile effect, is made of insulating materials, and improves safety while guaranteeing connection firmness.

The working principle and the using flow of the utility model are as follows:

after the fuse tube 4 is fused in a short circuit, the fuse tube 4 is disconnected and rotates by taking the bottom of the fuse tube 4 as the center to form an open circuit, the fuse tube 4 is fused and then falls into the supporting sleeve 8, the supporting sleeve 8 plays a role in supporting and buffering the fuse tube 4, and therefore the situation that the fuse tube 4 breaks due to large impact force after the fuse tube 4 rotates for half a circle is avoided, and the fuse tube 4 is effectively prevented from falling off. If the bottom of the fuse tube 4 is broken at the joint of the connecting frame 5, the two safety ropes 9 play a role in final protection, and the fuse tube 4 is firmly connected, so that the fuse tube 4 is prevented from falling from the high altitude and injuring passers by, and the safety is improved. The backup pad 10 is used for fixed stiffener 11, and stiffener 11 improves the connection fastness of fixed block 6 and connecting rod 7, avoids fixed block 6 and connecting rod 7 fracture, further improves the security. The cross-section of the supporting sleeve 8 is in a U-shaped structure and is matched with a cylindrical fuse tube, so that the fuse tube 4 is better supported; the buffer pad 12 is made of rubber, so that impact force can be effectively buffered after the fuse tube 4 falls into the supporting sleeve 8, and vibration between the bottom of the fuse tube 4 and the connecting frame 5 is reduced, thereby avoiding breakage; the safety rope 9 is woven by nylon chemical fiber, has good tensile effect, is made of insulating materials, and improves safety while guaranteeing connection firmness.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A drop-out fuse is characterized in that: comprising the following steps:

the novel fuse wire comprises an insulating porcelain bottle (1), wherein an upper mounting plate (2) and a lower mounting plate (3) which are parallel to each other are fixedly connected to the upper end and the lower end of the outer wall of the insulating porcelain bottle (1), a fuse wire tube (4) is arranged between the upper mounting plate (2) and the lower mounting plate (3), the top end of the fuse wire tube (4) is in buckling connection with the upper mounting plate (2), a connecting frame (5) is fixedly connected to the other end of the lower mounting plate (3), and the bottom of the fuse wire tube (4) is in rotary connection with the connecting frame (5);

the anti-drop device is positioned on the right side of the connecting frame (5) and used for preventing the fuse tube (4) from dropping.

2. A drop-out fuse in accordance with claim 1, wherein: the anti-falling device comprises a fixed block (6), the fixed block (6) is fixedly connected to the right side wall of the connecting frame (5), the other end of the fixed block (6) is fixedly connected with a connecting rod (7), and the other end of the connecting rod (7) is fixedly connected with a supporting sleeve (8).

3. A drop-out fuse in accordance with claim 2, wherein: the anti-drop device further comprises two safety ropes (9), wherein the two safety ropes (9) are respectively and fixedly connected to the front side and the rear side of the fixed block (6), and the other ends of the two safety ropes (9) are respectively and fixedly connected with the front side and the rear side of the bottom of the fuse tube (4).

4. A drop-out fuse in accordance with claim 2, wherein: the bottom of link (5) fixedly connected with backup pad (10), the up end fixedly connected with of backup pad (10) is respectively with fixed block (6) and connecting rod (7) fixed connection's stiffener (11).

5. A drop-out fuse in accordance with claim 2, wherein: the cross section of the supporting sleeve (8) is of a U-shaped structure, and a cushion pad (12) made of rubber is fixedly connected to the inner side of the supporting sleeve (8).

6. A drop-out fuse as defined in claim 3, wherein: the safety rope (9) is woven by nylon chemical fibers.