CN104901230A - Live wire insulated lifter - Google Patents

Abstract

The invention discloses an insulating lifter for live wires, which comprises: an insulating bracket; a gear transmission device fixed on a support column of the insulation bracket; a bidirectional ratchet mechanism for self-locking is arranged in the gear transmission device; The rope on the insulating support; one end of the rope is fixed on the top of the insulating support and connected to the movable pulley, and the other end is connected to the fixed pulley in the gear transmission; it is fixed on the lower end of the movable pulley to support the live wire An insulating hook; a rocker connected with the gear transmission to drive the gears of the gear transmission to rotate. The live wire insulation lifter saves manpower, ensures the stability of the live wire, avoids long-term contact between the staff and the live wire, and improves the personal safety of the staff.

Description

A Live Wire Insulation Lifter

technical field

The invention relates to the technical field of live work in distribution networks, in particular to an insulation lifter for live wires.

Background technique

When construction and maintenance are required on the distribution line, in order to ensure the normal production and living needs of the users on the line, the main line is not powered off, and the work performed by the operators is live work on the distribution network. There are four types of work in the distribution network live work. According to the proficiency of each unit for primary live work and the requirements of new work items, the work of newly installing or replacing pin insulators and lightning protection post insulators has become the main work of many units. At the same time, in order to ensure the reliability of power supply, such work is usually not included in the blackout plan.

In the traditional process, when new installation or replacement of pin insulators and lightning protection post insulators are carried out, the wires are separated and put back into the wire slots, all relying on manual lifting. Because the height of each base tower is different, there may be an upward force or a downward force, and it is very laborious to put the wire back into the wire slot of the pin insulator. Moreover, when new installation or replacement of pin-type insulators and lightning protection post-type insulators are carried out in traditional technology, it is easy to shake after the live wire is put down, causing a dangerous point.

In order to prevent the live wire from shaking after being put down and causing a dangerous point when the pin type insulator or the lightning protection post insulator is newly installed or replaced by the traditional technology, an insulating bracket can be used to support and fix the live wire. Install the insulation bracket on the cross arm, and the height of the insulation bracket is also fixed. The operator who performs live work first removes the aluminum wire used to fix the live wire to the insulator, and removes the live wire from the groove on the insulator. Take it out, then lift the live wire to the same height as the insulating support, and place it on the insulating support so that the live wire is in a safe range. In the groove, the whole process requires manual lifting and lowering of the live wires, which is laborious. Moreover, the contact time between the staff and the live wires will be long and the risk is high, and the insulation support is firm after installation. Insufficient, when encountering a large span or a slight corner, it is easy to deflect, and the live wire is unstable, and there may be a danger of the wire falling from the insulating support.

Contents of the invention

The purpose of the present invention is to provide a live wire insulation lifter to save manpower, ensure the stability of the live wire, avoid long-term contact between the staff and the live wire, and improve the personal safety of the staff.

In order to solve the above problems, the present invention provides a live wire insulation lifter, comprising:

insulation bracket;

A gear transmission device fixed on the support column of the insulating support; a bidirectional ratchet mechanism for self-locking is arranged in the gear transmission device;

A rope suspended on the insulating support; one end of the rope is fixed on the top of the insulating support and connected to the movable pulley, and the other end is connected to the fixed pulley in the gear transmission;

An insulating hook that is fixed at the lower end of the movable pulley and supports live wires;

A rocker that is connected with the gear transmission to drive the gears of the gear transmission to rotate.

Preferably, the insulating support includes a base plate, a support column and a horizontal frame; the support column is vertically connected to the base plate.

Preferably, both ends of the top of the insulating bracket are provided with grooves.

Preferably, both ends of the horizontal frame are provided with fixed pulleys.

Preferably, the horizontal frame is a horizontal straight frame.

Preferably, the horizontal frame is a bent frame at an obtuse angle.

Preferably, the two-way ratchet mechanism includes a pawl and a ratchet.

Preferably, the ratchet and the rocker are fixed on the same central rotating shaft, and the ratchet rotates under the rotation of the rocker.

Preferably, the pawl is provided with two pawl pointed heads in opposite directions, which drive the ratchet to perform clockwise unidirectional movement or counterclockwise unidirectional movement.

The live wire insulation lifter provided by the present invention fixes the live wire insulation lifter on the cross arm. When the live wire needs to be lifted, the staff turns the handle, uses the transmission device to adjust the position of the hook, and uses the hook to Directly hoist the live wire, no need to manually take out the wire, set the rotation direction of the two-way ratchet mechanism as the direction of lifting the hook, turn the handle to lift the hook, and when the live wire is lifted to a safe range, no longer turn the handle , because the two-way ratchet mechanism can be self-locking, that is, at this time, the rocker can only be rotated in one direction to lift the wire, and it will not move in the reverse direction. Due to the gravity of the conductive wire, the rocker will move in the opposite direction, but the two-way If the ratchet mechanism is in the stop state in the opposite direction, then the fixed pulley will not move, so the hook is stable at this time, and the live wire is also stable.

After the process of replacing the insulator needs to be lowered, the direction of rotation of the two-way ratchet mechanism is set to be the direction of lowering the hook, and the reverse rotation of the rocking handle lowers the hook, so that the live wire is lowered into the groove of the insulator. In this way, the whole process allows the live wire insulation lifter to lift or lower the live wire, saving manpower, avoiding the long-term contact between the staff and the live wire, improving the personal safety of the staff, and adopting a two-way ratchet mechanism for self-locking to ensure the stability of the live wire sex.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Fig. 1 is a schematic structural view of a live wire insulation lifter provided by an embodiment of the present invention;

Fig. 2 is a schematic structural view of the gear transmission device in the live wire insulation lifter provided by the embodiment of the present invention.

Detailed ways

The core of the present invention is to provide a live wire insulation lifter to save manpower, ensure the stability of the live wire, avoid long-term contact between the staff and the live wire, and improve the personal safety of the staff.

In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Fig. 1. Fig. 1 is a schematic structural diagram of a live wire insulation lifter provided by an embodiment of the present invention. The live wire insulation lifter includes:

Insulation bracket 1;

The gear transmission device 2 fixed on the support column of the insulating support 1;

Wherein, the gear transmission device 2 is provided with a bidirectional ratchet mechanism 8 for self-locking;

A rope 3 suspended on the insulating support 1;

Wherein, one end of the rope 3 is fixed on the top of the insulating support 1 and connected to the movable pulley 4, and the other end is connected to the fixed pulley 5 in the gear transmission 2;

fixed on the lower end of the movable pulley 4, supporting the insulating hook 6 of the live wire;

Connect with gear transmission 2, drive the rocking handle 7 that the gear of gear transmission 2 rotates.

Wherein, the insulating support 1 includes a bottom plate 11 , a support column 12 and a horizontal frame 13 ; the support column 12 is vertically connected to the bottom plate 11 .

Wherein, the horizontal frame is a bent frame at an obtuse angle.

Preferably, both ends of the top of the insulating support 1 are provided with grooves.

Preferably, both ends of the horizontal frame 13 are provided with fixed pulleys.

Preferably, the horizontal frame 13 can also be a horizontal straight frame.

It should be noted that all parts in the live wire insulation lifter are made of insulating materials except the parts in the gear transmission are metal. The live wire insulation lifter needs to be installed on the cross arm for use, and the staff uses the insulation hook of the live wire insulation lifter to support the live wire and lift the live wire during live work.

Specifically, when the rocking handle 7 rotates counterclockwise, the gear inside the gear of the gear transmission 2 rotates correspondingly, and the fixed pulley 5 in the gear transmission 2 also rotates counterclockwise under the rotation of the rocking handle 7, and is suspended on the insulating support 1 Under the action of the rotation of the fixed pulley 5, the rope 3 becomes shorter, and the fixed pulley 5 connected to the rope 3 begins to rise when the rope 3 becomes shorter, and then it is fixed at the lower end of the movable pulley 4 to support the insulating hook of the live wire 6 also rises along with the rising of movable pulley 4, promptly under the effect of the counterclockwise rotation of rocking handle 7, insulating suspension hook 6 can promote.

When the rocking handle 7 rotates clockwise, the gear inside the gear of the gear transmission 2 rotates accordingly, and the fixed pulley 5 in the gear transmission 2 also rotates clockwise under the rotation of the rocking handle 7, and the rope 3 suspended on the insulating support 1 Under the action of the rotation of the fixed pulley 5, the rope 3 becomes longer, and the fixed pulley 5 connected to the rope 3 begins to descend when the rope 3 becomes shorter, then it is fixed on the lower end of the movable pulley 4, and the insulating hook 6 supporting the live wire will also As the movable pulley 4 descends, that is, under the effect of the clockwise rotation of the rocking handle 7, the insulating suspension hook 6 will descend.

When the live working staff is working, the live wire insulation lifter is set on the cross arm. After the live wire is removed, the live wire can be hung on the insulation hook on the live wire insulation lifter. The live wire is hung on the hook, so that the live wire can remain stable on the insulating hook and will not fall off. Then, the staff shakes the handle counterclockwise, the insulated hook rises, and the live wire also rises with the insulated hook. When it rises to the safe range, the handle is no longer turned, because the gear transmission is equipped with a two-way ratchet mechanism for self-locking. , when the handle no longer rotates, the two-way ratchet mechanism can directly fix the rope at this moment, so that the rope is fixed, the insulating hook is fixed, and the live wire is not moved, and remains in this rising position. Of course, it is also possible to remove the live wire without the staff, directly remove the aluminum wire fixing the live wire, then directly shake the handle, use the hook to directly lift the live wire, and do not need the staff to take out the live wire and hang it on the insulated hook, which can save energy. This step is easier.

After the live work is completed, the live wire needs to be put back into the original position by the staff of the live work, so that the live wire needs to be lowered. At this time, the staff shakes the handle clockwise, the insulated hook descends, and the live wire also descends with the insulated hook. The two-way ratchet mechanism of the lock, when the handle no longer rotates, the two-way ratchet mechanism can directly fix the rope at this moment, so that the rope is fixed, the insulating hook is fixed, and the live wire is also not moving. position, and then the staff will fix the wires.

Please refer to FIG. 2 , combining FIG. 1 and FIG. 2 , and FIG. 2 is a schematic structural diagram of a gear transmission device in a live wire insulation lifter provided by an embodiment of the present invention. Wherein, the bidirectional ratchet mechanism 8 provided in the gear transmission device 2 includes a pawl 22 and a ratchet 21 . The ratchet 21 and the rocker 7 are fixed on the same central rotating shaft, and the ratchet 21 rotates under the rotation of the rocker. The pawl 22 is provided with two pawl pointed heads in opposite directions, which drive the ratchet wheel to perform clockwise one-way movement or counterclockwise one-way movement.

Specifically, during the rising process of the charged wire, the handle 7 rotates counterclockwise, using the pawl point 31 above the pawl 22, so that the pawl point 31 is attached to the ratchet wheel 22, and the ratchet wheel 22 is attached to the ratchet wheel 22. The ratchet point 31 of the upper part rotates, and the ratchet point 31 of the upper part does not limit the rotation of the ratchet 22 at this moment, but allows the ratchet 22 to rotate counterclockwise without blocking the ratchet 22. When the rocking handle counterclockwise drives the insulating hook to rise to a safe range, it no longer rises and stops rotating. At this moment, release the handle. Under the gravity of the live wire, the ratchet 22 should rotate clockwise, but the ratchet 22 At this time, it is fitted with the pawl tip 31 on the upper part of the ratchet 22. The ratchet tip 1 on the upper part of the ratchet 22 allows the ratchet 22 to rotate counterclockwise, but does not allow the ratchet 22 to rotate clockwise. 22 rotates clockwise, and the ratchet tip 31 on the top of the ratchet 22 will block the ratchet 22, preventing the ratchet 22 from rotating counterclockwise. The ratchet tip 31 of the upper part blocks the ratchet 22, the ratchet 22 no longer rotates, the two-way ratchet mechanism 8 is self-locking, the fixed pulley 5 does not rotate, and remains fixed, then the lead is also fixed, and the hook remains at the same moment height. Move, and the charged conductor also keeps the height still at this moment.

During the descent of the charged wire, the handle 7 rotates clockwise, using the pawl point 32 at the lower part of the pawl 22, so that the pawl point 32 is attached to the ratchet 22, and the ratchet 22 is attached to the bottom of the pawl 22. The ratchet point 32 of the position rotates, and the ratchet point 32 of the lower part does not limit the rotation of the ratchet 22 at this moment, but allows the ratchet 22 to rotate clockwise without blocking the ratchet 22 . After the rocking handle clockwise drives the insulating hook to drop to the desired position, it will no longer drop and stop rotating. At this moment, reset it so that the upper part of the ratchet 22 is attached to the ratchet 22, and the handle is released. Under the gravitational effect of the charged wire, the ratchet 22 should rotate clockwise, but the ratchet 22 is now fitted with the pawl tip 31 on the upper part of the ratchet 22, and the ratchet tip on the upper part of the ratchet 22 The head 31 means that the ratchet 22 is allowed to rotate counterclockwise, but the ratchet 22 is not allowed to rotate clockwise. If the ratchet 22 rotates clockwise, the ratchet tip 31 above the ratchet 22 will block the ratchet 22, preventing the ratchet 22 from rotating counterclockwise. At this time, under the gravity of the charged wire, the ratchet 22 rotates clockwise, the ratchet tip 31 on the top of the ratchet 22 blocks the ratchet 22, the ratchet 22 no longer rotates, the two-way ratchet mechanism 8 is self-locking, and the fixed pulley 5 Also do not rotate, keep fixed, and then lead is also fixed, and suspension hook keeps at this moment height motionless, and live wire also keeps this moment height motionless.

The live wire insulation lifter provided by the present invention fixes the live wire insulation lifter on the cross arm. When the live wire needs to be lifted, the staff turns the handle, uses the transmission device to adjust the position of the hook, and uses the hook to Directly hoist the live wire, no need to manually take out the wire, set the rotation direction of the two-way ratchet mechanism as the direction of lifting the hook, turn the handle to lift the hook, and when the live wire is lifted to a safe range, no longer turn the handle , because the two-way ratchet mechanism can be self-locking, that is, at this time, the rocker can only be rotated in one direction to lift the wire, and it will not move in the reverse direction. Due to the gravity of the conductive wire, the rocker will move in the opposite direction, but the two-way If the ratchet mechanism is in the stop state in the opposite direction, then the fixed pulley will not move, so the hook is stable at this time, and the live wire is also stable.

After the process of replacing the insulator needs to be lowered, the direction of rotation of the two-way ratchet mechanism is set to be the direction of lowering the hook, and the reverse rotation of the rocking handle lowers the hook, so that the live wire is lowered into the groove of the insulator. In this way, the whole process allows the live wire insulation lifter to lift or lower the live wire, saving manpower, avoiding the long-term contact between the staff and the live wire, improving the personal safety of the staff, and adopting a two-way ratchet mechanism for self-locking to ensure the stability of the live wire sex.

The live wire insulation lifter provided by the present invention has been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present invention, and the descriptions of the above embodiments are only used to help understand the method and core idea of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, some improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims (9)

1. A live wire insulation lifter, characterized in that, comprising: insulation bracket; A gear transmission device fixed on the support column of the insulating support; a bidirectional ratchet mechanism for self-locking is arranged in the gear transmission device; A rope suspended on the insulating support; one end of the rope is fixed on the top of the insulating support and connected to the movable pulley, and the other end is connected to the fixed pulley in the gear transmission; An insulating hook that is fixed at the lower end of the movable pulley and supports live wires; A rocker that is connected with the gear transmission to drive the gears of the gear transmission to rotate. 2. The live wire insulation lifter according to claim 1, wherein the insulating support comprises a base plate, a support column and a horizontal frame; the support column is vertically connected to the base plate. 3. The live wire insulation lifter according to claim 1, characterized in that grooves are provided at both ends of the top of the insulation support. 4. The live wire insulation lifter according to claim 2, characterized in that fixed pulleys are provided at both ends of the horizontal frame. 5. The live wire insulation lifter according to claim 2, characterized in that, the horizontal frame is a horizontal straight frame. 6. The live wire insulation lifter according to claim 2, wherein the horizontal frame is a bent frame with an obtuse angle. 7. The live wire insulation lifter according to claim 5 or 6, characterized in that, the two-way ratchet mechanism comprises a pawl and a ratchet. 8 . The live wire insulation lifter according to claim 7 , wherein the ratchet and the rocker are fixed on the same central rotating shaft, and the ratchet rotates under the rotation of the rocker. 9 . 9. The live wire insulation lifter according to claim 7, characterized in that, the pawl is provided with two pawl pointed heads in opposite directions, which drives the ratchet to perform clockwise one-way movement or counterclockwise unidirectional movement.