CN104201613A - Device for replacing linear single-string insulators by remote operations and application method of device - Google Patents

Abstract

The invention discloses a device for replacing linear single-string insulators, which comprises a fixed frame and a pulley connected below it. The fixed frame is fixed on a cross arm, and a worm gear device is connected to the end of the rod body. The worm gear device passes through the pulley and the insulator. The rope drives the trolley to move along the fixed frame, and the front end of the trolley is lifted by the pulley and the hoisting insulating rope to tilt up and drag the insulator string, so that the connection load between the upper end and the cross arm is transferred to the pallet of the trolley, and the connection between the lower end of the insulator string and the wire The load is transferred to the fixed frame through the hook and pulley assembly, so that the insulator string can be disassembled conveniently and quickly. The invention also discloses a method for replacing linear insulator strings by using the device. Through the mutual cooperation of pole operators and ground operators, the operators all use ground potential to indirectly operate and replace insulators, so that the replacement operation of insulator strings can be performed on the pole. body, away from the insulator string, to achieve the purpose of safety and high efficiency.

Description

Device for remote operation and replacement of straight single string insulators and its application method

technical field

The invention relates to a power transmission line of a straight single-string insulator, in particular to a device for remote operation and replacement of a straight single-string insulator on a power transmission line and an application method thereof.

Background technique

The current replacement of straight line single-string insulators generally requires one operator to mount the pulley block or fixture to the suspension point of the conductor, and another operator to climb to the conductor through a flat or soft ladder, and the two operators cooperate to install the tool. Transfer loads, replace insulators, remove tools and more to complete the job. However, the existing compact lines, multi-circuit transmission lines on the same tower, and multi-circuit compact lines on the same tower generally have the characteristics of high pole towers, various types of pole towers, small distances between cross-arms and phase-to-phase clearances, and relatively complicated conductor arrangements. This characteristic of the multi-circuit transmission line on the same tower is particularly obvious, so that the safe distance cannot meet the requirements of live work, and the live work cannot be carried out by using the existing methods.

Contents of the invention

The purpose of the present invention is to provide a safe and efficient device for replacing linear single-string insulators on the shaft side and a method for replacing linear single-string insulators using the device.

The invention discloses a device for replacing linear single-string insulators, which comprises a fixed frame and a pulley connected below it. The shaft end of the fixed frame is connected with a worm gear device, and the worm gear device drives the pulley to move along the fixed frame.

The fixed frame includes two parallel side beams and a left connecting beam and a right connecting beam connected between the two ends; the left connecting beam is located at the shaft end of the side beam, and an oblong hole is opened along the length direction on it, and the oblong There are two vertical adjustment screw rods passing through the hole. The lower end of the adjustment screw rod is connected with a clamp block for clamping the bottom edge of the cross arm. The adjustment screw rod is connected with the top surface of the left connecting beam and the The bottom surface is positioned; the right connecting beam is located at the wire end of the side beam, and both ends of its length direction are connected with F-shaped clamps. Extend to form two parallel plates, the upper parallel plate is connected with a secondary adjustment screw along the vertical direction, the upper end of which is fixed to the parallel plate by a nut, and the lower end is connected with a clamp arm rod, which can slide through the lower parallel plate The end of the plate is connected with a splint; the side beam is a hollow epoxy glass fiber tube, the outer end of the wire end is connected with a coaxial double pulley through the support, and the shaft end of the tube is connected with a single pulley through the pulley shaft. The chute is all along the width direction of the side beam, and the pipe wall corresponding to the pulley in the pipe is provided with a gap located on its upper side. the

The two F-type clamps clamp the top surface of the right connecting beam side with a connecting block, and the two connecting blocks are connected as a whole through a horizontal main adjusting screw, and there are corresponding threaded holes on the connecting block; the right connecting beam There is a fixed block on the outside corresponding to the F-shaped fixture, and the main adjusting screw passes through the fixed block and is fixed by a nut.

The block includes a rectangular pallet, a boom and a block of pulleys. There are four booms, which are separated from the four corners of the rectangular clip. The upper end of each boom is connected with a block of pulleys. The upper and lower pulleys of the block It is fixed by a C-shaped frame, and the lower pulley shafts of the same-side pulley blocks in the length direction of the rectangular clamping plate are connected as a whole through connecting rods.

The upper and lower pulleys of the pulley block are respectively located on the top surface and the bottom surface of the side beam, and the opening size of the C-shaped frame matches the height dimension of the side beam.

The two ends of the worm of the worm gear and worm device are respectively connected to single pulleys at positions corresponding to the side beams, and the worm is connected to the side beams through connecting plates located on both sides of the single pulley.

The pulleys at both ends of the worm and one pulley of the outer double pulleys at the corresponding side beam wire ends are respectively bypassed by the same sliding insulating rope. on the stand.

The same lifting insulating rope is bypassed between the single pulley at the inner shaft end of the side beam and the other pulley of the outer double pulley at the wire end of the side beam, and one end of the lifting insulating rope is fixed to the suspension on the wire side of the pulley. On the rod, the other end goes around the upper side of the outer pulley at the side beam wire end and the lower side of the inner single pulley at the shaft end in turn, and then leads out from the gap there.

The outside of the length direction of the side beam corresponds to the right connecting beam and is connected with a pulley by a bracket. The chute of the pulley is along the length direction of the side beam. The pulley is connected with an insulating rope, and the lower end of the insulation rope is connected with a hook.

The invention also discloses a method for replacing a linear single-string insulator by using the above-mentioned device, which includes the following steps:

(1) The ground operator assembles the pulley of the device separately, and assembles the fixing frame with other components and insulating ropes;

(2) The shaft operator places the fixing frame at a suitable position on the upper plane of the cross arm, so that the side beams of the fixing frame are located on both sides of the length direction of the cross arm, and adjust the distance between the two F-shaped clamps at the wire end of the fixing frame through the joystick. Connect the main adjustment screw and the longitudinal auxiliary adjustment screw so that the F-shaped clamp and the splint at the lower end of the auxiliary adjustment screw clamp the two sides and the bottom edge of the cross arm at the end;

(3) Adjust the adjusting screw rod at the end of the fixed frame through the operating rod, so that the clamping block at the lower end clamps both sides of the bottom edge in the width direction of the cross arm;

(4) Hook the C-shaped frame at the upper end of the tackle to the side beam of the fixed frame;

(5) Fix the lower end of the hoisting insulating rope on the boom near the wire end of the tackle through the joystick, and fix the two ends of the sliding insulating rope on the C-frame on the same side of the upper end of the tackle respectively;

(6) Use the joystick to hook the two hooks at the wire end of the fixed frame to the wire respectively, and at the same time tighten the insulating rope to transfer the load of the wire to the fixed frame, and use the joystick to hang the W pin and the bowl head at the lower end of the insulator string;

(7) Start the worm gear device to drive the pulley close to the insulator string by sliding the insulating rope;

(8) The ground operator tightens the hoisting insulating rope so that the U-shaped clamping plate of the tackle is stuck between the second and third insulators, and lifts the insulator string upwards;

(9) The shaft operator pulls out the W pin and the ball head at the upper end of the insulator string through the joystick;

(10) The ground operator should prevent loosening and lift the insulating rope, so that the U-shaped clamping plate of the tackle can be returned to its position;

(11) The shaft operator starts the worm gear device, and the traction block drags the insulator string to move to the side of the shaft;

(12) Remove the insulator string and move it to the ground through the endless rope suspended on the tower;

(13). Transport the new insulator string to a suitable location for installation by means of a pulley.

The working principle of the device disclosed in the present invention is as follows: the fixing frame is placed on the cross arm of the shaft, so that the side beams are located on both sides of the cross arm, the end of the shaft is fixed with the cross arm by adjusting the screw rod and the clamp block at the lower end, and the end of the wire is fixed to the cross arm. It is fixed with the cross arm through F-shaped clamps, adjusting screw rods, screw rods and splint components. The worm gear device drives the pulley to move along the side beam through the insulating rope and the pulley. The outer end of the block is tilted upward by lifting the insulating rope leading from the inner pulley at the shaft end of the side beam. The wire is lifted by the pulley outside the wire end of the side beam, the insulating rope and the hook, so that the load on the insulator string is transferred.

In the method disclosed by the present invention for replacing a straight line single string of insulators, through the mutual cooperation of shaft operators and ground operators, the operators all adopt ground potential indirect operations to replace insulators, so that the replacement operation of the insulator strings is all at the shaft end. , away from the insulator string, to achieve the purpose of safety and high efficiency.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

FIG. 2 is a schematic top view of FIG. 1 .

Fig. 3 is a schematic structural diagram of the pulley block in Fig. 1 .

FIG. 4 is a schematic structural diagram of the F-type fixture in FIG. 1 .

Detailed ways

As shown in the figure, the present invention discloses a device for replacing linear single-string insulators, which includes a horizontal fixed frame 10 and a trolley 20 connected below it. The shaft end of the fixed frame 10 is connected with a worm gear device 30. The device 30 drives the trolley 20 to move along the fixed frame 10 .

The fixed frame 10 includes two parallel side beams 11 and a left connecting beam 12 and a right connecting beam 13 connected to two ends thereof.

The left connecting beam 12 is positioned at the shaft end of the side beam 11, and is provided with an oblong hole along the length direction on it, and two adjusting screw rods 14 along the vertical direction are passed through in the oblong hole, and the lower end of the adjusting screw rod 14 is connected with a Clamp the clamp block 15 on the bottom edge of the cross arm, and adjust the screw mandrel 14 to be positioned with the top surface and the bottom surface of the left connecting beam 12 through the nut on it.

The right connecting beam 13 is located at the wire end of the side beam 11, and both ends of its length direction are connected with F-shaped clamps 16. The U-shaped opening of the F-shaped clamp 16 clamps the right connecting beam 13, and the opposite upper and lower ends of the U-shaped opening Both extend outward to form two parallel plates, the upper parallel plate is connected with a secondary adjustment screw 161 along the vertical direction, the upper end of the auxiliary adjustment screw 161 is fixed with the parallel plate by a nut, and the lower end is connected with a clamping arm rod 162, clamping The arm bar 162 is slidably passed through the lower parallel plate, and the clamping plate 163 is connected to its end.

Two F-type clamps 16 clamp the top surface of the right connecting beam 13 side and all have connecting block 164, are connected as a whole by horizontal main adjustment screw rod 19 between two connecting blocks 164, and corresponding screw holes are arranged on connecting block 164. There is a fixed block 131 on the outside of the corresponding F-shaped clamp 16 on the right connecting beam 13, and the main adjusting screw rod 19 passes through the fixed block 131 and is fixed by a nut.

The side beam 11 is a hollow tube, the outer end surface of the wire end is connected with a coaxial double pulley 17 through the support, and the shaft end in the tube is connected with a single pulley 18 through the pulley shaft, and their chutes are all along the width direction of the side beam. The pipe wall corresponding to the single pulley 18 in the pipe is provided with a gap located on its upper side. the

Tackle 20 comprises rectangular clamp 21, suspender 22 and block pulley 23, and suspender 22 has four, and they are separated on four angles of rectangular clamp 21, and the upper end of every suspender 22 is all connected with pulley block 23, and pulley block 23 The upper and lower pulleys are fixed by the C-shaped frame 24, and the lower pulley shaft of the same side pulley block 23 in the rectangular clamping plate 21 length direction is connected as a whole by a connecting rod 25.

The upper and lower pulleys of the pulley block 23 are located on the top surface and the bottom surface of the side beam 11 respectively, and the opening size of the C-shaped frame 24 matches the height dimension of the side beam 11 .

The two ends of the worm 31 of the worm gear device 3 are respectively connected with a single pulley 18 at the positions corresponding to the side beam 11 , and the worm 31 is connected with the side beam 11 through connecting plates located on both sides of the single pulley 18 .

The single pulley 18 at the two ends of the worm 31 and one pulley in the outer double pulley 17 at the lead end of the corresponding side beam 11 have the same sliding insulating rope 50 to go around, and its two ends are respectively fixed on the inner and outer pulleys on the same side of the pulley 20. On the C-frame 24. The same lifting insulating rope 60 is passed between the single pulley 18 at the inner shaft end of the side beam 11 and the other pulley in the outer double pulley 17 at the wire end of the side beam 11, and one end of it is fixed on the suspension rod on the wire side of the pulley 2 On 22, the other end is derived from the gap at this place after going around the upper side of the outer pulley of the side beam 11 lead end and the lower side of the shaft end inner pulley successively.

The length direction outside of side beam 11 is connected with pulley 40 by bracket corresponding to right connecting beam 13 places, and the chute of this pulley is along the length direction of side beam, and pulley 40 is connected with insulating suspension rope 70, and its lower end is connected with hook 80.

The working principle of the device disclosed in the present invention is as follows: the fixing frame is placed on the cross arm of the shaft, so that the side beams are located on both sides of the cross arm, the end of the shaft is fixed with the cross arm by adjusting the screw rod and the clamp block at the lower end, and the end of the wire is fixed to the cross arm. It is fixed with the cross arm through F-shaped clamps, adjusting screw rods, screw rods and splint components. The worm gear device drives the pulley to move along the side beam through the insulating rope and the pulley. The outer end of the block is tilted upward by lifting the insulating rope leading from the inner pulley at the shaft end of the side beam. The wire is lifted by the pulley outside the wire end of the side beam, the insulating rope and the hook, so that the load on the insulator string is transferred.

The invention also discloses a method for replacing a linear single-string insulator by using the above-mentioned device, which includes the following steps:

(1) The ground operator assembles the tackle 20 of the device separately, and assembles the fixing frame 10 with other components and insulating ropes;

(2) Shaft operators place the fixed frame 10 at a suitable position on the upper plane of the cross arm, so that the side beams 11 of the fixed frame 10 are located on both sides of the length direction of the cross arm, and adjust the two ends of the wire ends of the fixed frame 11 through the joystick. The main adjusting screw mandrel 19 and the longitudinal auxiliary adjusting screw mandrel 161 connected between the type clamps 16 make the clamping plate 163 at the lower end of the F-type clamps 16 and the auxiliary adjusting screw mandrel 16 clamp the both sides and the bottom edge of the end cross arm;

(3) Adjust the adjusting screw rod 14 at the shaft end of the fixed frame 10 through the operating rod, so that the clamping block 15 at the lower end clamps both sides of the bottom edge in the width direction of the cross arm;

(4), hook the C-shaped frame 24 at the upper end of the tackle 2 to the side beam 11 of the fixed frame 10;

(5), fix the lower end of the hoisting insulating rope 60 on the boom 22 near the lead end of the tackle 2 through the operating lever, and fix the two ends of the sliding insulating rope 50 on the C-frame 24 on the same side of the upper end of the tackle 2 respectively;

(6) Use the joystick to hook the two hooks 80 at the wire end of the fixed frame 10 to the wires respectively, and at the same time tighten the insulating rope 70 to transfer the load of the wire to the fixed frame 10, and use the joystick to connect the W pin and the bowl head at the lower end of the insulator string hanging board;

(7), start the worm gear device 30 to drive the pulley 2 close to the insulator string by sliding the insulating rope 50;

(8) The ground operator tightens the lifting insulation rope 60, so that the U-shaped clamping plate 21 of the tackle 20 is stuck between the second and third insulators, and lifts the insulator string upwards;

(9) The shaft operator pulls out the W pin and the ball head at the upper end of the insulator string through the joystick;

(10), the ground operator lifts the insulating rope 60 against loosening, so that the U-shaped clamping plate 21 of the tackle 20 returns to its position;

(11), the shaft operator starts the worm gear device 30, and the traction block 20 drags the insulator string to move to the side of the shaft;

(12) Remove the insulator string and move it to the ground through the endless rope suspended on the tower;

(13). Transport the new insulator string to a suitable location for installation via the trolley 2.

Operators use ground potential indirect operations to replace insulator strings, and the operations are all carried out on the side of the pole of the cross arm, which has the advantages of safety and efficiency.

Claims (10)

1. far-end operation is changed a device for straight line list insulator string, it is characterized in that: this device comprises fixed mount and the coaster that is connected in its below, and the shaft end of fixed mount is connected with worm gear device, and worm gear device band fly block moves along fixed mount.

2. far-end operation as claimed in claim 1 is changed the device of straight line list insulator string, it is characterized in that: described fixed mount comprises two parallel side bars and is connected in left tie-beam and the right tie-beam between its two ends;

Left tie-beam is positioned at the shaft end of side bar, on it, offer along its length slotted hole, in slotted hole, there are two adjusting screw mandrels vertically to pass, regulate the lower end of screw mandrel to be connected with the fixture block for clamping cross-arm base, regulate screw mandrel by end face and the location, bottom surface of the nut on it and left tie-beam;

Right tie-beam is positioned at the conductor wire end of side bar, its length direction two ends are all connected with F type fixture, the U-shaped opening of F type fixture is clamped right tie-beam, the equal extension in offside top and bottom of its U-shaped opening is stretched out and is formed two parallel-plates, the pair being connected with on upper parallel-plate vertically regulates screw mandrel, its upper end is by nut and this parallel-plate is fixed, lower end is connected with jig arm bar, and jig arm bar is slidably through lower parallel-plate, and its end is connected with clamping plate;

Side bar is hollow epoxy fiberglass pipe, the shaft end that its conductor wire end outer face is connected with in coaxial sister block, its pipe by bearing is connected with single-sheaved block by pulley spindle, their chute all, along the Width of side bar, offers the breach that is located thereon side on the tube wall that in pipe, pulley is corresponding.

3. far-end operation as claimed in claim 2 is changed the device of straight line list insulator string, it is characterized in that: the end face of the right tie-beam side of described two F type clamp clamps all has contiguous block, as a whole by horizontal main regulation screw rod connection between two contiguous blocks, on contiguous block, there is corresponding screwed hole; On described right tie-beam, there is fixed block in the outside of corresponding F type fixture, and main regulation screw rod is fixed by nut through after fixed block.

4. far-end operation as claimed in claim 2 is changed the device of straight line list insulator string, it is characterized in that: described coaster comprises rectangle clamp, suspension rod and assembly pulley, suspension rod has four, they separate from four angles of rectangle clamp, the upper end of every suspension rod is all connected with assembly pulley, upper and lower two pulleys of assembly pulley are fixed by C type frame, connect as a whole between the downslide wheel shaft of rectangle clamp length direction homonymy assembly pulley by connecting rod.

5. far-end operation as claimed in claim 4 is changed the device of straight line list insulator string, it is characterized in that: the upper and lower pulley of described assembly pulley lays respectively at end face and the bottom surface of described side bar, and the opening size of described C type frame mates with the height dimension of side bar.

6. far-end operation as claimed in claim 2 is changed the device of straight line list insulator string, it is characterized in that: the corresponding side bar position, worm screw two ends of described worm gear device is connected with respectively single-sheaved block, and worm screw is connected with side bar by the connecting plate that is positioned at single-sheaved block both sides.

7. far-end operation as claimed in claim 2 is changed the device of straight line list insulator string, it is characterized in that: between the pulley of the pulley at described worm screw two ends respectively and in the outer sister block of respective side edge beam conductor wire end, have same slip insulating cord to walk around, the two ends of slip insulating cord are individually fixed on the inside and outside C type fixed mount of described coaster homonymy.

8. far-end operation as claimed in claim 2 is changed the device of straight line list insulator string, it is characterized in that: between another pulley in described side bar in the outer sister block of the single-sheaved block of shaft end and this side bar conductor wire end, have same lifting insulating cord to walk around, promote one end of insulating cord and be fixed on described coaster by the suspension rod of side of wire was, the other end successively outside side bar conductor wire end in the upside of pulley and shaft end the downside of single-sheaved block after walking around, from this breach, derive.

9. far-end operation as claimed in claim 2 is changed the device of straight line list insulator string, it is characterized in that: the corresponding described right tie-beam place, length direction outside of described side bar is connected with pulley by support, the chute of this pulley is along the length direction of side bar, on pulley, be connected with insulating cord, the lower end of this insulating cord is connected with hook.

10. the device that utilizes far-end operation described in claim 1 to change straight line list insulator string is changed a method for straight line list insulator string, comprises the following steps:

(1), Ground Operation personnel by the coaster of this device assemble separately, fixed mount and other parts and each insulating cord assemble;

(2), shaft operating personnel is positioned over fixed mount the correct position of plane on cross-arm, make the side bar of fixed mount be positioned at the length direction both sides of cross-arm, regulate the main regulation screw mandrel that connects between fixed mount conductor wire end two F type fixtures and longitudinal pair to regulate screw mandrel by joystick, make F type fixture and secondary both sides and the base that regulates the clamping plate of screw mandrel lower end to clamp this end cross-arm;

(3), regulate the adjusting screw mandrel of fixed mount shaft end by action bars, make the fixture block of its lower end clamp both sides, cross-arm Width base;

(4), the C type frame of coaster upper end is mounted on the side bar of fixed mount;

(5), by joystick by promoting the lower end of insulating cord and be fixed on the suspension rod of the nearly conductor wire end of coaster, the two ends of slip insulating cord are individually fixed on the C type frame of the same side, coaster upper end;

(6), by joystick, two hooks of fixed mount conductor wire end are hooked respectively to wire, tighten up insulating cord simultaneously conductor load be transferred on fixed mount, by joystick by the W pin of insulator string lower end and socket-clevis eye;

(7), start worm gear device by slip insulating cord band fly block near insulator string;

(8), Ground Operation personnel tighten up lifting insulating cord, the U-shaped clamp of coaster is stuck between second and the 3rd insulator, and insulator string is upwards mentioned;

(9), shaft operating personnel extracts W pin and the bulb of insulator string upper end by joystick;

(10), the locking lifting insulating cord of Ground Operation personnel, make the U-shaped clamp return of coaster;

(11), shaft operating personnel starts worm gear device, extension pulley in tow insulator string moves to shaft side;

(12), by the continuous rope being suspended on shaft tower, insulator string is taken off and moves to ground;

(13), new insulator string being transported to correct position by coaster installs.