A device for preventing the falling off of a drop-out fuse for live working and its usage method

Abstract

The invention discloses a falling fuse anti-dropping device for live working and its using method, belonging to the technical field of power equipment. It includes an anti-falling protector and an insulating operating rod. The anti-falling protector includes a fixed hook, a threaded sleeve, a baffle plate, a housing A, a corner adapter, a connector, a housing B and a rotating shaft sleeve; one end of the corner adapter is fixedly installed in the housing A, and the other end is fixedly installed in the housing B; the threaded sleeve is rotatably sleeved in the housing A, one end of which is threadedly connected to the fixed hook, one end of the rotating shaft sleeve is sleeved in the threaded sleeve, and the other end is fixedly connected to the transmission shaft B of the corner adapter through a pin; the connector is fixedly installed in the housing B, one end of which abuts against the corner adapter, and the baffle plate is fixed on the housing A for supporting the falling fuse. The invention can avoid power outages caused by the falling off of the falling fuse due to vibration during live working, thereby improving the reliability of live working and the power supply stability.

Description

Technical Field

[0001] The present invention relates to the technical field of power equipment, and particularly relates to a device for preventing the fall of a drop-out fuse for live working and a method for using the same. Background Art

[0002] The drop-out fuse is one of the key components of distribution network power equipment. The 10kV drop-out fuse can be installed on the high-voltage side of the pole-mounted transformer, at the connection of the transformer, capacitor and line, to provide overload and short-circuit protection. The drop-out fuse has a simple structure, low price, convenient maintenance and small size, and is widely used in the distribution network. With the construction and development of China's power grid, after more than fifty years of research and application, live working has become an important means and method for the detection, maintenance and transformation of transmission and distribution lines, and has played a very important role in the safe and reliable operation of the power system and the improvement of economic benefits. However, during live working, the drop-out fuse is prone to fall off due to external vibration, resulting in abnormal power failure, which brings huge losses to people's production and life. Summary of the Invention

[0003] The purpose of the present invention is to provide a device for preventing the fall of a drop-out fuse for live working, which protects the drop-out fuse during live working in the distribution network, prevents abnormal power failure caused by the fall of the drop-out fuse due to vibration generated during live working, improves the power supply reliability, reduces the operation risk, and ensures the personal safety of the operation personnel.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A device for preventing the fall of a drop-out fuse for live working includes a fall prevention protector and an insulating operating rod; the fall prevention protector includes a fixed hook, a threaded sleeve, a baffle, a housing A, a corner device, a connector, a housing B and a rotating shaft sleeve; the housing A and the housing B are fixedly connected to form an L-shaped housing, one end of the corner device is fixedly installed in the housing A, and the other end is fixedly installed in the housing B; the threaded sleeve is rotatably sleeved in the housing A, one end of which is threadedly connected to the fixed hook, and the other end is fixedly connected to the rotating shaft sleeve; one end of the rotating shaft sleeve is sleeved in the threaded sleeve, and the other end is fixedly connected to the transmission shaft B of the corner device; the connector is fixedly installed in the housing B, one end of which abuts against the corner device, and a central through hole for passing the transmission shaft A of the corner device is provided in the center of the connector; the baffle is fixed on the housing A for supporting the drop-out fuse; the other end of the fixed hook is provided with a hook head for hanging the porcelain bottle of the drop-out fuse; the insulating operating rod is formed by connecting several insulating rods end to end, and the head of the top insulating rod is fixedly installed with a transmission head, which is inserted into the transmission shaft A of the corner device.

[0006] Further, one side of the outer shell A protrudes outward to form a baffle connection part. One end of the baffle is fixed to the baffle connection part by a screw, and the other end extends in a direction perpendicular to the upper side of the outer shell A. When it is convenient to fix the hook on the porcelain insulator, rotating the insulating rod drives the baffle to hold the fuse tube.

[0007] Further, an arc-shaped plate is provided at the extended end of the baffle. The arc-shaped plate can better hold the fuse tube and prevent it from falling off.

[0008] Further, the included angle formed by the outer shell A and the outer shell B is an obtuse angle. It is convenient to operate the insulating rod to lift the anti-falling device to the drop-out fuse.

[0009] Further, each insulating rod is connected by 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 on-site height.

[0010] Further, the driving head and the guiding outer shell form a transmission device. One end of the guiding outer shell is fixedly connected to the driving head, and the other end is fixedly sleeved with the insulating rod. The end of the guiding outer shell connected to the driving head is set as a conical part, and the lower end of the central through hole of the connector is set as a conical hole part adapted to the conical part of the guiding outer shell. Through the conical guiding action of the conical part and the conical hole part, the driving head is accurately connected to the angle changer, improving the installation efficiency.

[0011] Further, a cylindrical part capable of passing through the central through hole of the connector is provided at one end of the driving head connected to the angle changer, and a square hole adapted to the transmission shaft A of the angle changer is provided inside the cylindrical part. Using the central through hole of the connector as a positioning and guiding hole improves the installation accuracy.

[0012] The usage method of any one of the above drop-out fuse anti-falling devices for live working includes the following steps:

[0013] 1) During live working, first use the insulating operating rod to lift the anti-falling protector to the drop-out fuse, so that the fixed hook is hooked on the porcelain insulator 1 of the drop-out fuse. Then rotate the insulating operating rod, and the driving head in the insulating operating rod transmits the rotational force to the rotating shaft sleeve through the angle changer. The rotating shaft sleeve drives the threaded sleeve to rotate. At this time, the fixed hook moves and tightens with the threaded sleeve through the tail threaded rod until the baffle abuts against the fuse tube of the drop-out fuse. After the installation of the anti-falling protector is completed, remove the insulating operating rod;

[0014] 2) After the live working is completed, lift the insulating operating rod to the anti-falling protector, align the driving head of the insulating operating rod with the connector, and insert the cylindrical head of the driving head into the transmission shaft A of the angle changer. At this time, rotate the insulating operating rod in the reverse direction to remove the anti-falling protector from the drop-out fuse.

[0015] Advantages of the present invention: By providing an insulating operating rod, the present invention can ensure the personal safety of operators during the installation of the anti-falling protector. After the anti-falling protector is installed, the anti-falling protector protects the drop-out fuse from falling off, thereby improving the reliability of live working and the power supply stability, and avoiding power outages caused by the drop-out fuse falling off due to vibrations during live working. The operation of the present invention is simple and the reliability is high. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of a drop-out fuse anti-falling device for live working according to the present invention.

[0017] Figure 2 is a three-dimensional structural diagram of the anti-falling protector of the present invention.

[0018] Figure 3 is Figure 2 exploded view of.

[0019] Figure 4 is a three-dimensional structural diagram of the insulating operating rod of the present invention.

[0020] Figure 5 is Figure 4 exploded view of.

[0021] Figure 6 is a schematic diagram of the use state of a drop-out fuse anti-falling device for live working according to the present invention. Detailed Embodiments

[0022] The present invention will be further described below in conjunction with specific examples for the convenience of understanding the present invention, but the present invention is not limited thereto.

[0023] Example 1

[0024] Refer to Figures 1 to 5 , this embodiment provides a drop-out fuse anti-falling device for live working, including an anti-falling protector 10 and an insulating rod 20.

[0025] The anti-falling protector 10 includes a fixed hook 11, a threaded sleeve 12, a baffle 13, a housing A 14, a corner adapter 15, a connector 16, a housing B 17 and a rotating shaft sleeve 18.

[0026] Refer to Figure 3, the outer shell A14 is a rectangular housing. The left side wall of the rectangular housing protrudes outward to form a baffle mounting portion. The baffle mounting portion and the rectangular housing body form a housing that is L-shaped in the horizontal plane. The outer shell B17 is a circular housing. The upper end of the circular housing is fixedly connected to the rear end of the rectangular housing body by screws to form a housing that is L-shaped in the vertical plane. And the included angle formed by the outer shell A14 and the outer shell B17 in the vertical plane is an obtuse angle. For example, in this embodiment, the included angle is 105°. The lower end of the baffle 13 is vertically fixed to the front side of the baffle mounting portion by screws, that is, the baffle 13 is perpendicular to the upper side of the outer shell A14. The part of the baffle 13 that extends out of the outer shell A14 is set as an arc-shaped plate, and the radian of the arc-shaped plate is greater than the outer diameter of the fuse tube.

[0027] The corner converter 15 is a prior art. For example, in this embodiment, a 105-degree corner converter of the Green Forest brand is selected. The corner converter 15 includes a drive-connected drive shaft A and drive shaft B, and the two axes of the drive shaft A and drive shaft B form an included angle of 105°. One end of the corner converter 15 is fixedly installed in the outer shell A14, and the other end is fixedly installed in the outer shell B17.

[0028] One end of the threaded sleeve 12 is provided with an internal threaded hole, and the other end 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 is connected to the threaded sleeve 12 by screws. The threaded sleeve 12 is rotatably installed in the outer shell A14, and its end is prevented from falling off the outer shell A14 by a snap ring. One end of the rotating shaft sleeve 18 away from the threaded sleeve 12 is coaxially fixedly connected to the drive shaft B inserted into the corner converter 15 by a pin. One end of the fixed hook 11 is set as a threaded rod, and the other end is bent into a hook head. The threaded rod portion of the fixed hook 11 extends into the outer shell A14 and is threadedly connected to the threaded sleeve 12. The hook head portion is located outside the outer shell A14, and for the convenience of use, the hook head is bent toward the baffle side.

[0029] The connector 16 is fixedly installed in the outer shell B17. Its upper end surface abuts against the corner converter 15, and its lower end surface is flush with the lower end surface of the outer shell B17. The connector 16 is cylindrical, and a central through hole is provided in the center thereof. The inner diameter of the central through hole is slightly larger than the radius of the drive shaft A of the corner converter 15, so that the drive shaft A can pass through the central through hole of the connector 16 to be connected to the insulating rod.

[0030] Refer to Figure 5, the insulating operating rod 20 made of insulating material includes several insulating rods connected end to end. For example, in this embodiment, it includes a first insulating rod 21 and a second insulating rod 22. A connecting female head 25 is installed at the tail of the first insulating rod 21, and a connecting male head 26 is installed at the head of the second insulating rod 22. The first insulating rod 21 and the second insulating rod 22 are inserted and fixed by a pin after being inserted through the female head 25 and the male head 26. A transmission device is installed at the head of the first insulating rod 21. The transmission device includes a transmission head 23 and a guiding housing 24. The transmission head 23 is in the shape of a cylinder. One end of the cylinder protrudes radially outward to form a tail boss, and a square hole is axially opened at the center of the other end, thus forming a cylindrical head with a hole. The square hole is used for inserting the transmission shaft A of the angle changer. The guiding housing 24 is a cylindrical shell with a conical head at one end. The inner diameter of the cylindrical shell 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. During installation, the transmission head 23 is passed through the guiding housing 24 and fixed in the guiding housing 24 with screws, and the first insulating rod 21 is inserted into the guiding housing 24 and fixed with rivets.

[0031] Embodiment 2

[0032] Refer to Figure 6 , a method for using a drop-out fuse anti-detachment device for live working as described in Embodiment 1 includes the following steps:

[0033] 1) During live working, first use the insulating operating rod 20 to lift the anti-drop protector 10 to the drop-out fuse, so that the fixed hook 11 is hooked on the porcelain bottle 1 of the drop-out fuse. Then rotate the insulating operating rod 20. The rotation force of the transmission head in the insulating operating rod is transmitted to the rotating shaft sleeve 18 through the angle changer 15, and the rotating shaft sleeve 18 drives the threaded sleeve 12 to rotate. At this time, the fixed hook 11 moves and tightens with the threaded sleeve 12 through the tail threaded rod until the baffle 13 abuts against the fuse tube of the drop-out fuse. After the installation of the anti-drop protector 10 is completed, remove the insulating operating rod 20;

[0034] 2) After the live working is completed, lift the insulating operating rod 20 to the anti-drop protector 10, align the transmission head 23 of the insulating operating rod with the connector 16. Under the guiding action of the connector 16 and the guiding housing 24, insert the cylindrical head of the transmission head into the transmission shaft A of the angle changer. At this time, rotate the insulating operating rod 20 in the reverse direction to remove the anti-drop protector 10 from the drop-out fuse.

[0035] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements are also within the protection scope of the present invention.

Claims

1. A device for preventing the falling-off of a drop-out fuse for live working, characterized in that, it includes a fall prevention protector (10) and an insulating operating rod (20); The fall prevention protector (10) includes a fixed hook (11), a threaded sleeve (12), a baffle (13), a housing A (14), a corner adapter (15), a connector (16), a housing B (17) and a rotating shaft sleeve (18); The housing A (14) and the housing B (17) are fixedly connected to form an L-shaped housing. One end of the corner adapter (15) is fixedly installed inside the housing A (14), and the other end is fixedly installed inside the housing B (17); The threaded sleeve (12) is rotatably sleeved inside the housing A (14), one end of which is threadedly connected to the fixed hook (11), and the other end is fixedly connected to the rotating shaft sleeve (18); One end of the rotating shaft sleeve (18) is sleeved inside the threaded sleeve (12), and the other end is fixedly connected to the transmission shaft B of the corner adapter (15); The connector (16) is fixedly installed inside the housing B (17), one end of which abuts against the corner adapter (15), and a central through hole for passing the transmission shaft A of the corner adapter (15) is provided in the central part of the connector (16); The baffle (13) is fixed on the housing A (14) for supporting the drop-out fuse; The other end of the fixed hook (11) is provided with a hook head for hanging the porcelain bottle of the drop-out fuse. The insulating operating rod (20) is formed by connecting several insulating rods end to end. The head of the top insulating rod is fixedly installed with a transmission head (23), and the transmission head (23) is inserted into the transmission shaft A of the corner adapter (15); Each insulating rod is connected by a male head (26) and a female head (25). The included angle formed by the housing A (14) and the housing B (17) is an obtuse angle.

2. A device for preventing the falling-off of a drop-out fuse for live working according to claim 1, characterized in that, One side of the housing A (14) protrudes outward to form a baffle connection part, and one end of the baffle (13) is fixed on the baffle connection part by screws, and the other end extends in a direction perpendicular to the upper side of the housing A (14).

3. A device for preventing the falling-off of a drop-out fuse for live working according to claim 2, characterized in that, The extended end of the baffle (13) is provided with an arc-shaped plate.

4. A device for preventing the falling-off of a drop-out fuse for live working according to claim 1, characterized in that, The transmission head (23) and the guiding housing (24) form a transmission device. One end of the guiding housing (24) is fixedly connected to the transmission head (23), and the other end is fixedly sleeved with an insulating rod. The end of the guiding housing (24) connected to the transmission head (23) is set as a conical part, and the lower end of the central through hole of the connector (16) is set as a conical hole part adapted to the conical part of the guiding housing (24).

5. A device for preventing the falling-off of a drop-out fuse for live working according to claim 4, characterized in that, One end of the transmission head (23) connected to the corner adapter (15) is provided with a cylindrical part capable of passing through the central through hole of the connector (16), and a square hole adapted to the transmission shaft A of the corner adapter (15) is provided inside the cylindrical part.

6. The usage method of a device for preventing the falling-off of a drop-out fuse for live working according to any one of claims 1 to 5, It is characterized in that it includes the following steps: 1) During live working, first use the insulating operating rod (20) to lift the anti-falling protector (10) to the drop-out fuse, so that the fixed hook (11) is hooked on the insulator (1) of the drop-out fuse. Then rotate the insulating operating rod (20). The transmission head in the insulating operating rod transmits the rotational force to the rotating shaft sleeve (18) through the angle changer (15). The rotating shaft sleeve drives the threaded sleeve (12) to rotate. At this time, the fixed hook (11) moves and tightens with the threaded sleeve (12) through the tail threaded rod until the baffle (13) abuts against the fuse tube of the drop-out fuse. After the installation of the anti-falling protector is completed, remove the insulating operating rod; 2) After the live working is completed, lift the insulating operating rod (20) to the anti-falling protector (10), align the transmission head (23) of the insulating operating rod with the connector (16), and insert the cylindrical head of the transmission head into the transmission shaft A of the angle changer. At this time, rotate the insulating operating rod (20) in the reverse direction to remove the anti-falling protector (10) from the drop-out fuse.

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