CN219226215U

CN219226215U - Drop-out prevention device of drop-out fuse for live working

Info

Publication number: CN219226215U
Application number: CN202223055301.3U
Authority: CN
Inventors: 倪伟; 曹阳; 王欣悦; 马丽雅; 陈中; 张璨; 宫衍平; 杨竞洲
Original assignee: Nanjing Suyi Industrial Co ltd; Nanjing Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Current assignee: Cao Yang; Ni Wei
Priority date: 2022-11-17
Filing date: 2022-11-17
Publication date: 2023-06-20
Anticipated expiration: 2032-11-17

Abstract

The utility model discloses a drop-out prevention device for a drop-out fuse for live working, and belongs to the technical field of power equipment. The anti-falling protector comprises a fixed hook, a threaded sleeve, a baffle, a shell A, a corner device, a connector, a shell B and a rotating shaft sleeve; one end of the corner device is fixedly arranged in the shell A, and the other end of the corner device is fixedly arranged in the shell B; the threaded sleeve is rotatably sleeved in the shell A, one end of the threaded sleeve is in threaded connection with the fixed hook, one end of the rotating shaft sleeve is sleeved in the threaded sleeve, and the other end of the rotating shaft sleeve is fixedly connected with the transmission shaft B of the corner device through a pin; the connector is fixedly arranged in the shell B, one end of the connector abuts against the corner device, and the baffle plate is fixed on the shell A and used for supporting the drop-out fuse. The utility model can avoid the power failure caused by falling off of the drop-out fuse due to vibration during live working, thereby improving the reliability of live working and the power supply stability.

Description

Drop-out prevention device of drop-out fuse for live working

Technical Field

The utility model relates to the technical field of power equipment, in particular to a drop-out type fuse anti-drop device for live working.

Background

The drop-out fuse is one of key elements of distribution network power equipment, and the 10kV drop-out fuse can be arranged on the high-voltage side of a transformer on a pole, at the connection position of a transformer and a capacitor with a circuit, so that overload and short-circuit protection are provided. The drop-out fuse has the advantages of simple structure, low price, convenient maintenance, small volume and wide application in a power distribution network. With the construction and development of the power grid in China, through more than five decades of research and application, uninterrupted operation has become an important means and method for detecting, overhauling and modifying power transmission and distribution lines, and plays an important role in safe and reliable operation of a power system and improving economic benefits. However, in the uninterrupted operation process, the drop-out fuse is easy to fall off due to external vibration, abnormal power failure is caused, and huge losses are brought to the production and life of people.

Disclosure of Invention

The utility model aims to provide a drop-out fuse anti-drop device for live working, which protects a drop-out fuse in uninterrupted operation of a distribution network, prevents abnormal power failure caused by drop-out of the drop-out fuse due to vibration generated by uninterrupted operation, improves power supply reliability, reduces operation risk and ensures personal safety of operators.

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

a drop-out prevention device of a drop-out fuse for live working comprises a drop-out prevention protector and an insulating operating rod; the anti-falling protector comprises a fixed hook, a threaded sleeve, a baffle, a shell A, a corner device, a connector, a shell B and a rotating shaft sleeve; the shell A and the shell B are fixedly connected into an L-shaped shell, one end of the corner device is fixedly arranged in the shell A, and the other end of the corner device is fixedly arranged in the shell B; the threaded sleeve is rotatably sleeved in the shell A, one end of the threaded sleeve is in threaded connection with the fixed hook, and the other end of the threaded sleeve is fixedly connected with the rotating shaft sleeve; one end of the rotating shaft sleeve is sleeved in the threaded sleeve, and the other end of the rotating shaft sleeve is fixedly connected with a transmission shaft B of the corner device; the connector is fixedly arranged in the shell B, one end of the connector abuts against the corner device, and the center part of the connector is provided with a center through hole for passing through a transmission shaft A of the corner device; the baffle is fixed on the shell A and used for supporting the drop-out fuse; the other end of the fixed hook is provided with a hook head for hanging the drop-out fuse porcelain bottle; the insulating operation rod is formed by connecting a plurality of insulating rods end to end, the head of the insulating rod at the top end is fixedly provided with a transmission head, and the transmission head is spliced with a transmission shaft A of the corner device.

Further, one side of the housing a protrudes outward to form a baffle connection portion, one end of the baffle is fixed to the baffle connection portion by a screw, and the other end extends in a direction perpendicular to the upper side of the housing a. When the fixed hook is hung on the porcelain bottle, the insulating rod is rotated to drive the baffle to hold the melting pipe.

Further, the extended end of the baffle is provided with an arc plate. The arc plate can better support the fusion tube and prevent the fusion tube from falling off.

Further, the included angle formed by the shell A and the shell B is an obtuse angle. The insulation rod is convenient to operate, and the anti-falling device is lifted to the drop-out fuse.

Further, each insulating rod is connected through a male head and a female head. The connection is convenient, and the total length of the insulating rod can be flexibly adjusted according to the field height.

Further, the transmission device is formed by the transmission head and the guide shell, one end of the guide shell is fixedly connected with the transmission head, the other end of the guide shell is fixedly sleeved with the insulating rod, one end of the guide shell, which is connected with the transmission head, is provided with a conical part, and the lower end of the central through hole of the connector is provided with a conical hole part which is matched with the conical part of the guide shell. The transmission head is accurately connected with the corner device through the conical guiding function of the conical part and the conical hole part, so that the installation efficiency is improved.

Further, one end of the transmission head connected with the corner device is provided with a cylindrical part capable of penetrating through a central through hole of the connector, and a square hole matched with a transmission shaft A of the corner device is arranged in the cylindrical part. The central through hole of the connector is used as a positioning guide hole, so that the installation accuracy is improved.

The utility model has the beneficial effects that: according to the utility model, by arranging the insulating operating rod, the personal safety of operators can be ensured in the process of installing the anti-falling protector; and after the anti-falling protector is installed, the anti-falling protector is used for protecting the anti-falling fuse from falling off, so that the reliability and the power supply stability of live working are improved, and the power failure caused by falling off of the anti-falling fuse due to vibration in live working is avoided.

Drawings

Fig. 1 is a schematic structural view of a drop-out prevention device for a live working drop-out fuse according to the present utility model.

Fig. 2 is a schematic perspective view of the fall protector of the present utility model.

Fig. 3 is an exploded view of fig. 2.

Fig. 4 is a schematic perspective view of an insulating operation rod of the present utility model.

Fig. 5 is an exploded view of fig. 4.

Fig. 6 is a schematic view showing a usage state of the drop-out prevention device for a live working drop-out fuse according to the present utility model.

Detailed Description

The utility model will be further described with reference to specific examples to facilitate an understanding of the utility model, but are not intended to limit the utility model thereto.

Referring to fig. 1 to 5, the present embodiment provides a drop-out prevention device for a drop-out fuse for live working, which includes a drop-out protector 10 and an insulating rod 20.

The fall protector 10 comprises a fixed hook 11, a threaded sleeve 12, a baffle 13, a shell A14, a corner device 15, a connector 16, a shell B17 and a rotating shaft sleeve 18.

Referring to fig. 3, the housing a14 is a rectangular housing, and a left side wall of the rectangular housing protrudes outward to form a baffle mounting portion, and the baffle mounting portion and the rectangular housing body form an L-shaped housing in a horizontal plane. The shell B17 is a round shell, and the upper end of the round shell is fixedly connected with the rear end of the rectangular shell body through a screw to form an L-shaped shell in a vertical plane. And the angle formed by the housing a14 and the housing B17 in the vertical plane is an obtuse angle, for example, 105 ° in the present embodiment. The lower extreme of baffle 13 passes through the vertical leading flank that fixes of screw at baffle installation department, and baffle 13 and the upper side of shell A14 are perpendicular promptly, and the part that baffle 13 stretches out shell A14 sets up to arc platy, and the radian of arc is greater than the external diameter of fuse fusion tube.

The corner device 15 is a 105-degree corner device of green brands in the embodiment, and the corner device 15 comprises a transmission shaft A and a transmission shaft B which are in transmission connection, and two axes of the transmission shaft A and the transmission shaft B form an included angle of 105 degrees. One end of the corner device 15 is fixedly arranged in the shell A14, and the other end is fixedly arranged in the shell B17.

One end of the threaded sleeve 12 is provided with an internal threaded hole, the other end of the threaded sleeve 12 is provided with a smooth round hole, the rotating shaft sleeve 18 is sleeved in the smooth round hole of the threaded sleeve 12 and connected with the threaded sleeve 12 through a screw, the threaded sleeve 12 is rotatably installed in the shell A14, and the end part of the threaded sleeve is prevented from falling off from the shell A14 through a clamp spring. The end of the rotating sleeve 18 remote from the threaded sleeve 12 is fixedly connected coaxially with the drive shaft B inserted into the corner device 15 by means of a pin. One end of the fixed hook 11 is provided with a threaded rod, the other end is bent into a hook head, the threaded rod part of the fixed hook 11 stretches into the shell A14 to be in threaded connection with the threaded sleeve 12, the hook head part is positioned outside the shell A14, and the hook head is bent towards one side of the baffle plate for convenience in use.

The connector 16 is fixedly mounted in the housing B17 with its upper end face abutting the corner device 15 and its lower end face flush with the lower end face of the housing B17. The connector 16 is cylindrical, and is provided with a central through hole at the central part, wherein the inner diameter of the central through hole is slightly larger than the radius of the transmission shaft A of the corner device 15, so that the transmission shaft A can conveniently pass through the central through hole to be connected with the insulating operation rod.

Referring to fig. 5, an insulating operation rod 10 made of an insulating material includes a plurality of insulating rods connected end to end, including a first insulating rod 21 and a second insulating rod 22 in this embodiment, a connection female head 25 is mounted at the tail of the first insulating rod 21, a connection male head 26 is mounted at the head of the second insulating rod 22, the first insulating rod 21 and the second insulating rod 22 are fixed by pins after being inserted through the female head 25 and the male head 26, and a transmission device is mounted at the head of the first insulating rod 21. The transmission device comprises a transmission head 23 and a guide shell 24, wherein the transmission head 23 is in a cylinder shape, one end of the cylinder protrudes radially outwards to form a tail boss, and the central part of the other end of the cylinder is axially provided with a square hole, so that a cylindrical head with a hole is formed, and the square hole is used for being inserted with a transmission shaft A of the corner device. The guide housing 24 is a cylindrical housing having a conical head at one end, the inner diameter of the cylindrical housing is adapted to the outer diameter of the first insulating rod 21, the conical head is provided with a through hole for passing through the cylindrical head of the transmission head 23, and when the transmission head 23 is mounted, the transmission head is passed through the guide housing 24 and fixed in the guide housing 24 by using a screw, and the first insulating rod 21 is inserted into the guide housing 24 and fixed by using a rivet.

Referring to fig. 6, the present utility model is used:

during live working, firstly, the anti-drop protector 10 is lifted to the drop-out fuse by using the insulating operation rod 20, the fixed hook 3 is hung on the porcelain bottle 1 of the drop-out fuse, then the insulating operation rod 20 is rotated, a transmission head in the insulating operation rod transmits rotation force to the rotating shaft sleeve 18 through the corner device 15, the rotating shaft sleeve 18 drives the threaded sleeve 12 to rotate, at the moment, the fixed hook 11 is tightened through mutual movement of the tail threaded rod and the threaded sleeve 12 until the baffle 13 abuts against a fusion tube of the drop-out fuse, and after the installation of the anti-drop protector 10 is completed, the insulating operation rod 20 is taken down;

after live working is completed, the insulating operation rod 20 is lifted to the anti-drop protector 10, the transmission head 23 of the insulating operation rod is aligned to the connector 16, under the guiding action of the connector 16 and the guiding shell 24, the cylindrical head of the transmission head is spliced with the input transmission shaft of the corner device, and at the moment, the anti-drop protector 10 is taken down from the drop-out fuse by reversely rotating the insulating operation rod 20.

The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model and remain within the scope of the utility model.

Claims

1. The falling-off prevention device of the drop-off fuse for live working is characterized by comprising a falling-off prevention protector (10) and an insulating operating rod (20);

the anti-falling protector (10) comprises a fixed hook (11), a threaded sleeve (12), a baffle (13), a shell A (14), a corner device (15), a connector (16), a shell B (17) and a rotating shaft sleeve (18); the shell A (14) and the shell B (17) are fixedly connected into an L-shaped shell, one end of the corner device (15) is fixedly arranged in the shell A (14), and the other end of the corner device is fixedly arranged in the shell B (17); the threaded sleeve (12) is rotatably sleeved in the shell A (14), one end of the threaded sleeve is in threaded connection with the fixed hook (11), and the other end of the threaded sleeve is fixedly connected with the rotating shaft sleeve (18); one end of a rotating shaft sleeve (18) is sleeved in the threaded sleeve (12), and the other end of the rotating shaft sleeve is fixedly connected with a transmission shaft B of the corner device (15); the connector (16) is fixedly arranged in the shell B (17), one end of the connector abuts against the corner device (15), and a central through hole for passing through a transmission shaft A of the corner device (15) is formed in the central part of the connector (16); the baffle plate (13) is fixed on the shell A (14) and used for supporting the drop-out fuse; the other end of the fixed hook (11) is provided with a hook head for hanging the drop-out fuse porcelain bottle;

the insulating operation rod (20) is formed by connecting a plurality of insulating rods end to end, the head part of the insulating rod at the top end is fixedly provided with a transmission head (23), and the transmission head (23) is spliced with a transmission shaft A of the corner device (15).

2. The drop-out prevention device for a live working drop-out fuse according to claim 1, wherein one side surface of the housing a (14) protrudes outward to form a shutter connection portion, one end of the shutter (13) is fixed to the shutter connection portion by a screw, and the other end extends in a direction perpendicular to the upper side surface of the housing a (14).

3. The drop-out prevention device for a live working drop-out fuse as claimed in claim 2, wherein the extended end of the shutter (13) is provided with an arc plate.

4. The drop-out prevention device for a live working fuse according to claim 1, wherein an included angle formed by the housing a (14) and the housing B (17) is an obtuse angle.

5. The drop-out prevention device for a live working fuse according to claim 1, wherein each insulating rod is connected to the female head (25) through a male head (26).

6. The drop-out prevention device for a live working drop-out fuse according to claim 1, wherein the transmission device is composed of a transmission head (23) and a guide housing (24), one end of the guide housing (24) is fixedly connected with the transmission head (23), the other end of the guide housing is fixedly sleeved with an insulating rod, one end of the guide housing (24) connected with the transmission head (23) is provided with a conical portion, and the lower end of a central through hole of the connector (16) is provided with a conical hole portion matched with the conical portion of the guide housing (24).

7. The drop-out prevention device for a live working drop-out fuse according to claim 6, wherein one end of the transmission head (23) connected with the corner device (15) is provided with a cylindrical part capable of penetrating through a central through hole of the connector (16), and a square hole matched with a transmission shaft a of the corner device (15) is arranged in the cylindrical part.