CN111877836B

CN111877836B - Power grid high-voltage frame with dustproof structure

Info

Publication number: CN111877836B
Application number: CN202010781071.5A
Authority: CN
Inventors: 不公告发明人
Original assignee: Shanghai Siliang Electronic Technology Co ltd; State Grid Shanghai Electric Power Co Ltd
Current assignee: SHANGHAI SILIANG ELECTRONIC TECHNOLOGY Co.,Ltd.; State Grid Shanghai Electric Power Co Ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2021-10-15
Anticipated expiration: 2040-08-06
Also published as: CN111877836A

Abstract

The invention relates to the technical field of high-voltage frames, in particular to a power grid high-voltage frame with a dustproof structure, which comprises a fixed wiring rod, second sliding grooves and an inserting rod, wherein dustproof boxes are sleeved and mounted on the outer sides of the fixed wiring rod, the second sliding grooves are formed in two sides of the bottom end of the fixed wiring rod, first springs are sleeved and mounted on the outer sides of the inserting rod, rollers are slidably mounted in the second sliding grooves, and a dustproof protection plate is fixedly mounted at one end of the inserting rod through a rotating shaft. According to the invention, through the arrangement of the dustproof box, the second chute, the first spring, the roller and the dustproof protection plate, after a worker is connected with a high-voltage wire, the dustproof box and the dustproof protection plate can prevent dust at the joint of the high-voltage wire, so that dust cannot be accumulated at the joint, and the dust cannot be condensed due to the wetting of rainwater, thereby damaging the high-voltage wire, improving the safety of the device, increasing the structural protection of the device and improving the practicability of the device.

Description

Power grid high-voltage frame with dustproof structure

Technical Field

The invention relates to the technical field of high-voltage frames, in particular to a power grid high-voltage frame with a dustproof structure.

Background

Along with the development of science and technology, the power consumption in the life also improves thereupon, and most all are high-tension electricity equipment, so need use electric wire netting high-voltage frame in the life to connect these high-tension lines, make the high-tension line by high overhead connection, it is safer, can not cause the injury to people, the electric wire netting high-voltage frame is a tower support body, connect by connection base and fix subaerial, and be connected with ground insulation, then the top of high-tension frame body is connected with the high-tension line, form high-tension circuit, make people can normally use high-tension electricity equipment in living, and can not cause the electric shock injury to people easily because the electric current of high-tension line is too big. For example, the invention patent with the publication number of CN207765917U, entitled single-arm bird-repelling shielding cover applied to a tower pole of a high-voltage overhead line, adopts a cover structure to insulate and shield a metal bowl and a bare conductor at the end of an insulating arm, and extends the insulating arm along the direction of the overhead line for a specified length, so as to increase the electrical insulation distance between a bird nest and a power supply overhead line, and generate effective isolation between the bird nest and a conductor, thereby effectively preventing the occurrence of power failure, damage to power equipment and electric shock accidents caused by interphase short circuit or grounding due to wet flash, pollution flash, salt mist chemical gas corrosion, artificial touch, and small animal or sundry lapping of the insulator, and adopting a defense type shielding protection mode, wherein the cover structure has a smooth outer surface, thereby increasing the difficulty of bird nesting, reducing the success rate of bird nesting, and achieving the function and the purpose of bird repelling, adopt the insulating mode of shielding of defence type, need not subsidiary power supply or power device, effective operating time is long, neither influences the power supply of current power supply line, does not increase the work load of patrolling and examining the staff again, and the daily maintenance work load is little, and facilitate promotion and application so current high-voltage rack has obtained continuous innovation and development, consequently can know that present high-voltage rack basically satisfies people's demand, but still has some problems.

The traditional electric wire netting high-voltage rack is most direct naked with high-voltage line fixed connection on the crossbearer on high-voltage rack top, make the high-voltage line surface accumulation a large amount of dusts of junction easily, if meet the junction of rainy day high-voltage line still have the dust accumulation, rainwater can wet the dust of accumulation, then the dust of accumulation can condense at the junction of high-voltage line to lead to the trouble of high-voltage line easily, so need design an electric wire netting high-voltage rack with dustproof construction and solve above-mentioned problem.

Disclosure of Invention

The invention aims to provide a power grid high-voltage frame with a dustproof structure, which aims to solve the problems that most of the traditional power grid high-voltage frames in the background art are directly exposed, high-voltage wires are fixedly connected on a transverse frame at the top end of the high-voltage frame, a large amount of dust is easily accumulated on the surfaces of the high-voltage wires at the connection part, and if the connection part of the high-voltage wires is still accumulated in rainy days, rainwater can wet the accumulated dust, and then the accumulated dust can be condensed at the connection part of the high-voltage wires, so that the high-voltage wires are easily broken down.

In order to achieve the purpose, the invention provides the following technical scheme: a power grid high-voltage frame with a dustproof structure comprises a high-voltage frame mechanism and a dustproof mechanism, wherein the high-voltage frame mechanism comprises a high-voltage frame body, the dustproof mechanism comprises four fixed wiring rods, dustproof boxes are sleeved on the outer sides of the fixed wiring rods, the fixed wiring rods are fixedly installed on two sides of the top end of the high-voltage frame body, second sliding grooves are formed in two sides of the bottom end of each fixed wiring rod, arc grooves are formed in one sides of one ends of the second sliding grooves in an extending mode, rollers are installed inside the second sliding grooves in a sliding mode, inserting rods are fixedly installed on one sides of the rollers through rotating shafts, one ends of the inserting rods penetrate through the dustproof boxes and extend to the outer sides of the inserting rods, first springs are sleeved on the outer sides of the inserting rods, one ends of the first springs are fixedly connected with baffle plates outside the inserting rods, and the other ends of the first springs are fixedly connected with the inner walls of the dustproof boxes, one end of the inserted bar is fixedly provided with a dustproof guard plate through a rotating shaft.

Preferably, the both sides of high pressure support body all fixed mounting have the fixed plate, the both sides of high pressure support body all fixed mounting have the bracing piece, just bracing piece one end all with the bottom fixed connection of fixed plate, first spout has all been seted up to the both sides of fixed plate, the inside all slidable mounting of first spout has the slider, the one end all fixed mounting of slider has the sliding plate, the one end all fixed mounting of high pressure support body both sides and sliding plate has first fixed block, the round hole has all been seted up to the one end of first fixed block, every group the inside all first wire rope of fixedly connected with of round hole.

Preferably, the high pressure support body includes elevating system, elevating system includes fixed box, fixed box fixed mounting is on the top of high pressure support body, the second recess has been seted up to the bottom of fixed box, there is the fixed pulley inside of second recess through pivot fixed mounting, the outside of fixed pulley cup joints installs second wire rope.

Preferably, the both sides of dust-proof box all fixed mounting have a shrink section of thick bamboo, two the dustproof backplate is close to one side of each other all fixed mounting have the second fixed block, one side of second fixed block all has the telescopic link through pivot fixed mounting, the one end of telescopic link all inserts the inside of installing in a shrink section of thick bamboo.

Preferably, the bottom of dust-proof box both sides has all seted up the third spout, the shape of third spout all is the L type, the inside of third spout all has the slide bar, two one side fixed mounting that the slide bar is close to each other has the dust screen.

Preferably, the top of dust-proof box both sides has all seted up the second arc wall, the inside all slidable mounting of second arc wall has the stopper, first recess has all been seted up to the both sides of dust screen one end, the inside all fixed mounting of first recess has the second spring, stopper one end all with the one end fixed connection of second spring.

Preferably, all fixed mounting have sealed rubber cloth in the middle part of dustproof backplate one side and bottom, just sealed rubber cloth's centre all is off-state, first arc wall has all been seted up to sealed rubber cloth's one end, every group first arc wall all constitutes circularly, every group the circular diameter that first arc wall constitutes all is the same with the high-voltage line diameter.

Preferably, one end of each limiting block is hemispherical.

Compared with the prior art, the invention has the beneficial effects that:

1. through being provided with dust-proof box, second spout, first spring, gyro wheel and dustproof backplate, make the staff after having connected the high-voltage line, dust-proof box and dustproof backplate can prevent dust to the junction of high-voltage line, make the junction can not pile up the dust, and can not lead to the dust to condense because drenching of rainwater to damage the high-voltage line, promoted the security of device, increased the structure protectiveness of device, promoted the practicality of device.

2. Through being provided with fixed plate, sliding plate, first wire rope, first spout and slider, make the staff can stand on fixed plate and sliding plate when the installation high-voltage line, make staff's foot atress easy to assemble high-voltage line, first spout and slider make the sliding plate can accomodate to one side removal of fixed plate, have promoted the practicality of device, have increased staff's use and have experienced.

3. Through being provided with a shrink section of thick bamboo and telescopic link, make dustproof backplate can be opened along with the removal of dust-proof box, make things convenient for the staff to install the high-voltage line, through being provided with sealing rubber cloth and first arc wall, make dustproof backplate can form encapsulated situation after closed and high-voltage line contact at any time, make the dust block outside, increased the structure practicality of device, promoted the dustproof effect of device.

4. Through being provided with dust screen, third spout, slide bar, second spring, stopper and second arc wall, the dust screen can be dustproof to the junction of high-voltage line to can breathe freely the junction of high-voltage line, slide bar and stopper can make the dust screen dismantled, and the staff washs the dust on its surface, promote the gas permeability of dust screen, have increased the practicality of device.

5. Through being provided with second recess, fixed pulley and second wire rope, make the staff can rise the top with the staff to the high-voltage support body through the drawing of second wire rope, make the staff can install the high-voltage line, more make things convenient for staff's lift, promoted the practicality of device, increased staff's use and experienced.

Drawings

FIG. 1 is a schematic front view of the structure of the present invention;

FIG. 2 is a schematic side sectional view of the construction of the dust box and the stationary terminal block of the present invention;

FIG. 3 is a schematic side view of the dust box of the present invention;

FIG. 4 is a schematic sectional front view of a part of the dust-proof box of the present invention;

FIG. 5 is an enlarged view of a portion of the structure at A in FIG. 1 according to the present invention;

FIG. 6 is an enlarged view of a portion of the structure shown at B in FIG. 1 according to the present invention;

FIG. 7 is an enlarged view of a portion of the structure of FIG. 1 at C according to the present invention;

fig. 8 is an enlarged view of a portion of the structure at D in fig. 1 according to the present invention.

In the figure: 100. a high-pressure frame mechanism; 110. a high-pressure frame body; 111. a fixing plate; 112. a support bar; 113. A sliding plate; 114. a first wire rope; 115. a first fixed block; 116. a circular hole; 117. a first chute; 118. a slider; 200. a dust-proof mechanism; 210. a dust-proof box; 211. fixing the junction pole; 212. a second chute; 213. inserting a rod; 214. a first spring; 215. a roller; 216. a dust guard plate; 217. a second fixed block; 218. a retraction cylinder; 219. a telescopic rod; 220. a dust screen; 221. sealing the rubber cloth; 222. a first arc-shaped slot; 223. a third chute; 224. a slide bar; 225. a first groove; 226. a second spring; 227. a limiting block; 228. a second arc-shaped slot; 300. a lifting mechanism; 310. a fixing box; 311. a second groove; 312. A fixed pulley; 313. a second wire rope.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-8, an embodiment of the present invention:

a power grid high-voltage frame with a dustproof structure comprises a high-voltage frame mechanism 100 and a dustproof mechanism 200, wherein the high-voltage frame mechanism 100 comprises a high-voltage frame body 110, the dustproof mechanism 200 comprises four fixed wiring rods 211, the outer sides of the fixed wiring rods 211 are sleeved with dustproof boxes 210, the fixed wiring rods 211 are fixedly arranged on two sides of the top end of the high-voltage frame body 110, two sides of the bottom end of each fixed wiring rod 211 are provided with second sliding grooves 212, one side of one end of each second sliding groove 212 is provided with an arc groove in an extending mode, rollers 215 are slidably arranged inside the second sliding grooves 212, one sides of the rollers 215 are fixedly provided with inserting rods 213 through rotating shafts, one ends of the inserting rods 213 penetrate through the dustproof boxes 210 and extend to the outer sides, the outer sides of the inserting rods 213 are all sleeved with first springs 214, one ends of the first springs 214 are all fixedly connected with baffle plates outside the inserting rods 213, and the other ends of the first springs 214 are all fixedly connected with the inner walls of the dustproof boxes 210, one end of the inserting rod 213 is fixedly provided with a dustproof guard plate 216 through a rotating shaft, so that after the high-voltage wire is connected by workers, the dustproof box 210 and the dustproof guard plate 216 can prevent dust at the joint of the high-voltage wire, dust cannot be accumulated at the joint, and dust cannot be condensed due to wetting of rainwater, so that the high-voltage wire is damaged, the safety of the device is improved, and the structural protection of the device is improved.

Further, both sides of the high-voltage frame body 110 are fixedly provided with a fixed plate 111, both sides of the high-voltage frame body 110 are fixedly provided with a support rod 112, one end of the support rod 112 is fixedly connected with the bottom end of the fixed plate 111, both sides of the fixed plate 111 are provided with a first sliding chute 117, the inside of the first sliding chute 117 is slidably provided with a sliding block 118, one end of the sliding block 118 is fixedly provided with a sliding plate 113, both sides of the high-voltage frame body 110 and one end of the sliding plate 113 are fixedly provided with a first fixed block 115, one end of the first fixed block 115 is provided with a round hole 116, the inside of each round hole 116 is fixedly connected with a first steel wire rope 114, so that a worker can stand on the fixed plate 111 and the sliding plate 113 when installing a high-voltage line, the foot of the worker is stressed, the worker can install the high-voltage line more conveniently, the sliding block 118 can move the sliding plate 113 to one side of the fixed plate 111 for storage, the practicality of the device is improved, and the use experience of workers is increased.

Further, high-pressure support body 110 includes elevating system 300, elevating system 300 includes fixed box 310, fixed box 310 fixed mounting is on the top of high-pressure support body 110, second recess 311 has been seted up to fixed box 310's bottom, there is fixed pulley 312 inside of second recess 311 through pivot fixed mounting, second wire rope 313 is installed in the outside cup joint of fixed pulley 312, make the staff can rise the top that rises to high-pressure support body 110 with the staff through drawing of second wire rope 313, then the staff can install the high-tension line, more make things convenient for staff's lift, the practicality of device has been promoted, staff's use experience has been increased.

Further, the both sides of dust-proof box 210 all fixed mounting have a shrink section of thick bamboo 218, two one sides that dustproof backplate 216 is close to each other all fixed mounting have second fixed block 217, one side of second fixed block 217 all has telescopic link 219 through pivot fixed mounting, the one end of telescopic link 219 all inserts the inside of installing in shrink section of thick bamboo 218, make dust-proof box 210 can drive dustproof backplate 216 and also move at the in-process that removes, thereby make dustproof backplate 216 can open or closed, make things convenient for the staff to install the high-voltage line when opening, can prevent dust to the high-voltage line junction during the closure, the practicality of device has been increased, the dustproof effect of device has been promoted, the structural security of device has been increased.

Further, third spout 223 has all been seted up to the bottom of dust-proof box 210 both sides, and the shape of third spout 223 all is the L type, and the inside of third spout 223 all has slide bar 224, and one side fixed mounting that two slide bars 224 are close to each other has dust screen 220, makes dust screen 220 can carry out dirt-proof while to the high-voltage line junction, can also play ventilative effect, has increased the gas permeability of device, has promoted the structure practicality of device.

Further, second arc wall 228 has all been seted up on the top of dust-proof box 210 both sides, the inside of second arc wall 228 all has slidable mounting stopper 227, first recess 225 has all been seted up to the both sides of dust screen 220 one end, the inside all fixed mounting of first recess 225 has second spring 226, stopper 227 one end all with the one end fixed connection of second spring 226, make dust screen 220 can follow dust-proof box 210's both sides and dismantle, the staff can carry out cleaning process to its accumulational dust in surface, lifting device's ventilation effect, make things convenient for staff's dismantlement simultaneously, the practicality of device has been increased, staff's use experience has been promoted.

Further, all fixed mounting have the sealed rubber cloth 221 in the middle part of dustproof backplate 216 one side and bottom, and the centre of sealed rubber cloth 221 all is off-state, first arc 222 has all been seted up to the one end of sealed rubber cloth 221, first arc 222 of every group all constitutes circularly, the circular diameter that first arc 222 of every group constitutes all is the same with the high-voltage line diameter, make dustproof backplate 216 can form the encapsulated situation after closed and high-voltage line contact at will, make the dust block outside, the structure practicality of device has been increased, the dustproof effect of device has been promoted.

Further, the one end of stopper 227 is hemispherical all, makes stopper 227 can make automatic roll-off or the inside of sliding in second arc wall 228 under staff's pulling, has made things convenient for staff to the dismantlement and the installation of dust screen 220, has promoted staff's use and has experienced, has increased the convenience of device.

The working principle is as follows: when a worker mounts the grid high-voltage frame and needs to connect a high-voltage wire, firstly, the worker fixedly connects one end of the second steel wire rope 313 with a safety rope hook on the body of the worker, then fixedly mounts the other end of the second steel wire rope 313 on the second steel wire rope 313 winding device, then the worker turns on a switch of a servo motor on the winding device to start rotating, slowly winds the second steel wire rope 313, at the moment, the other end of the second steel wire rope 313 starts to rise upwards to enable the worker to rise upwards, when the worker rises to a specified position, the worker on the ground turns off the switch of the winding device to enable the servo motor to stop rotating, then, the worker steps on the surface of the fixing plate 111 with feet to fixedly hang the safety rope on the body on the high-voltage frame body 110, and then slides the sliding plate 113, the sliding block 118 is slid to one side in the first sliding groove 117, and when the sliding block 118 slides to a designated position, the sliding plate 113 is also slid to the designated position, at this time, the first wire rope 114 is in a tensioned state, and then a worker stands on the fixed plate 111 and the sliding plate 113 to start connection work of the high-voltage wire.

Firstly, the worker slides the dust-proof box 210 upwards on the outer side of the fixed connection rod 211, at this time, the roller 215 slides upwards in the second sliding slot 212, because the elastic force generated by the first spring 214 acts on the baffle on one side of the insertion rod 213, when the roller 215 moves to a specified position, the first spring 214 springs the roller 215 into the arc groove on one side of the second sliding slot 212, at this time, the insertion rod 213 also moves towards the inside of the dust-proof box 210, along with the movement of the first spring 214, the insertion rod 213 moves upwards, so that the connection between one end of the dust-proof guard plate 216 and one end of the insertion rod 213 starts rotating, and the end of the telescopic rod 219 inserted into the telescopic cylinder 218 starts moving towards the outside of the telescopic cylinder 218, so that the dust-proof guard plate 216 is opened, when the roller 215 completely falls into the arc groove on one side of the second sliding slot 212, at this time, the dust-proof guard plate 216 is completely in an opened state.

After the worker connects the high-voltage wire to the bottom end of the fixed connection rod 211, the dust-proof box 210 slides downwards, because the arc-shaped groove at the top end of the second sliding groove 212 is arc-shaped, the roller 215 slides out from the arc-shaped groove at one side of the top end of the second sliding groove 212 along with the movement of the dust-proof box 210, at this time, the baffle at one side of the insertion rod 213 extrudes the first spring 214 to generate elastic force, along with the downward sliding of the dust-proof box 210, the telescopic rod 219 also begins to shrink towards the inside of the shrink cylinder 218, during the sliding process, when the sealing rubber cloth 221 on the dust-proof guard plate 216 contacts with the high-voltage wire, because the middle of the opening of the sealing rubber cloth 221, the sealing rubber cloth 221 will open towards both sides, so that the high-voltage wire can slide between the sealing rubber cloth 221, when the roller 215 slides to the designated position, the dust-proof guard plate 216 also moves to the closed state, at this time, the high-voltage wire moves to the first arc-shaped groove 222 at one end of the sealing rubber cloth 221, the sealing rubber sheet 221 is also closed and is in a sealed state.

When a large amount of dust is deposited on the surface of the dust-proof net 220 at two sides of the dust-proof box 210 and needs to be disposed, firstly, a worker holds the handle at one end of the dust-proof net 220, then pulls the dust-proof net 220 outwards to make the limit block 227 slide in the second arc-shaped groove 228, at this time, the limit block 227 extrudes the second spring 226 to generate elastic force, when the limit block 227 completely slides out of the second arc-shaped groove 228, one end of the dust-proof net 220 is taken out from one end of the dust-proof box 210, then, the worker lifts the dust-proof net 220 upwards to make the sliding rod 224 slide upwards in the third sliding groove 223, when the sliding rod 224 slides to a specified position, the worker pulls the dust-proof net 220 outwards, at this time, the dust-proof net 220 is completely taken out from one side of the dust-proof box 210, then, the worker can clean the dust accumulated on the surface of the dust-proof net 220, when the cleaning is completed, the worker slides the sliding rod 224 into one end of the third sliding groove 223, then, the sliding rod 224 is installed to a designated position in the third sliding groove 223 in a downward sliding manner, the worker slides the limiting block 227 into the second arc-shaped groove 228, and the limiting block 227 is completely clamped into the second arc-shaped groove 228 due to the elastic force generated by the second spring 226 acting on the limiting block 227, at this time, the two dust screens 220 are fixed on two sides of the dust box 210.

After the worker finishes all the operations, the worker unlocks the safety rope hung on the high-voltage frame body 110, slides the sliding plate 113 to a designated position towards one side of the fixing plate 111 to be accommodated, and then the worker on the ground opens the switch of the winding device to enable the servo motor to start to rotate slowly, so that the worker on the fixing plate 111 is put down slowly.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a power grid high-voltage frame with dustproof construction, includes high-voltage frame mechanism (100) and dustproof mechanism (200), high-voltage frame mechanism (100) include high-voltage frame body (110), its characterized in that: the dustproof mechanism (200) comprises fixed wiring rods (211), the number of the fixed wiring rods (211) is four, the outer sides of the fixed wiring rods (211) are all sleeved with dust-proof boxes (210), the fixed wiring rods (211) are all fixedly installed on the two sides of the top end of a high-voltage frame body (110), second sliding grooves (212) are all formed in the two sides of the bottom end of the fixed wiring rods (211), arc grooves are formed in one sides of one ends of the second sliding grooves (212) in an extending mode, rollers (215) are installed inside the second sliding grooves (212) in a sliding mode, inserting rods (213) are all installed on one sides of the rollers (215) through rotating shafts, one ends of the inserting rods (213) all penetrate through the dust-proof boxes (210) and extend to the outer sides, first springs (214) are installed on the outer sides of the inserting rods (213) in a sleeved mode, one ends of the first springs (214) are all fixedly connected with baffle plates outside the inserting rods (213), the other end of the first spring (214) is fixedly connected with the inner wall of the dustproof box (210), and one end of the inserted rod (213) is fixedly provided with a dustproof guard plate (216) through a rotating shaft.

2. The power grid high-voltage rack with the dustproof structure as claimed in claim 1, wherein: the utility model discloses a high-pressure support body, including high-pressure support body (110), fixed plate (111) are all fixed mounting in both sides of high-pressure support body (110), the both sides of high-pressure support body (110) are all fixed mounting has bracing piece (112), just bracing piece (112) one end all with the bottom fixed connection of fixed plate (111), first spout (117) have all been seted up to the both sides of fixed plate (111), the inside of first spout (117) all slidable mounting has slider (118), the one end all fixed mounting of slider (118) has sliding plate (113), the one end of high-pressure support body (110) both sides and sliding plate (113) all fixed mounting has first fixed block (115), round hole (116) have all been seted up to the one end of first fixed block (115), every group the inside of round hole (116) all fixedly connected with first wire rope (114).

3. The power grid high-voltage rack with the dustproof structure as claimed in claim 1, wherein: high pressure support body (110) includes elevating system (300), elevating system (300) is including fixed box (310), fixed box (310) fixed mounting is on the top of high pressure support body (110), second recess (311) have been seted up to the bottom of fixed box (310), there is fixed pulley (312) inside of second recess (311) through pivot fixed mounting, the outside of fixed pulley (312) is cup jointed and is installed second wire rope (313).

4. The power grid high-voltage rack with the dustproof structure as claimed in claim 1, wherein: the both sides of dust-proof box (210) are all fixed mounting have a shrink section of thick bamboo (218), two the equal fixed mounting in one side that dustproof backplate (216) are close to each other has second fixed block (217), one side of second fixed block (217) all has telescopic link (219) through pivot fixed mounting, the one end of telescopic link (219) all inserts the inside of installing in a shrink section of thick bamboo (218).

5. The power grid high-voltage rack with the dustproof structure as claimed in claim 1, wherein: third spout (223) have all been seted up to the bottom of dust-proof box (210) both sides, the shape of third spout (223) all is the L type, the inside of third spout (223) all has sliding rod (224), two one side fixed mounting that sliding rod (224) are close to each other has dust screen (220).

6. The power grid high-voltage rack with the dustproof structure as claimed in claim 5, wherein: second arc wall (228) have all been seted up on the top of dust-proof box (210) both sides, the inside of second arc wall (228) all has slidable mounting to have stopper (227), first recess (225) have all been seted up to the both sides of dust screen (220) one end, the inside all fixed mounting of first recess (225) has second spring (226), stopper (227) one end all with the one end fixed connection of second spring (226).

7. The power grid high-voltage rack with the dustproof structure as claimed in claim 1, wherein: all fixed mounting have sealed rubber cloth (221) in the middle part of dustproof backplate (216) one side and bottom, just sealed rubber cloth (221) the centre all is the off-state, first arc wall (222) have all been seted up to the one end of sealed rubber cloth (221), and every group first arc wall (222) all constitute circularly, every group the circular diameter that first arc wall (222) are constituteed all is the same with the high-voltage line diameter.

8. The power grid high-voltage rack with the dustproof structure as claimed in claim 6, wherein: one end of each limiting block (227) is hemispherical.