CN105305305A - Device for live replacement of cross arm and insulator string and application method - Google Patents

Abstract

The invention relates to the technical field of electrical machinery manufacturing, in particular to a device and a method for replacing crossarms and insulator strings with electricity, and is characterized in that an insulating cross bar is provided, and the left and right sides of the insulating cross bar are symmetrically provided with props The support unit for the wires on both sides of the cross arm, the front and rear sides of the middle of the insulating cross bar are respectively equipped with a holding unit for holding the pole and a branch unit for lifting the wire on the top of the pole. The three units are integrated. It can not only replace the cross arm, but also replace the insulator string on the cross arm, and at the same time change the insulator string on the top of the utility pole. It has the advantages of reasonable structure, convenient replacement, manpower saving and high work efficiency.

Description

Device and method for live replacement of cross-arm and insulator string

technical field

The invention relates to the technical field of electrical machinery manufacturing, in particular to a device and a method for replacing cross-arms and insulator strings with live charging, which are reasonable in structure, convenient in replacement, save manpower, and high in work efficiency.

Background technique

As we all know, with the continuous development of social economy, the public has higher and higher requirements for reliable power supply. Due to the advantages of small footprint, low investment, fast construction speed, beautiful and practical, etc., steel pipe poles have been used in the construction of urban power grids in recent years. A large number of applications, however, with the continuous increase of power lines, some equipment is gradually aging, and the daily maintenance and repair tasks of power transmission lines are becoming more and more heavy. Due to the smooth surface of steel pipe rods and steel pipes in line design, the operating space is narrow, especially when the crossarm is placed on the wire The pole is easy to tilt, resulting in different counterweights on the left and right sides, which makes the work of replacing insulator strings and cross arms more and more difficult, and brings difficulties to the task of live maintenance of equipment. The hoist lifts the wire, and then manually replaces the insulator string and the cross arm. This method requires a large amount of work, increases manpower and material resources, reduces work efficiency, and cannot realize the simultaneous replacement of the cross arm and the insulator string.

Contents of the invention

The purpose of the present invention is to solve the disadvantages of the above-mentioned prior art, and provide a device and method for live replacement of cross-arms and insulator strings with reasonable structure, convenient replacement, labor-saving and high work efficiency.

The technical solution adopted by the present invention to solve its technical problems is:

A device and method for live replacement of cross-arms and insulator strings, characterized in that an insulating cross-bar is provided, and the left and right sides of the insulating cross-bar are symmetrically provided with supporting wire units for supporting the wires on both sides of the cross-arm, and the insulating cross-bar The front and rear sides of the middle part of the pole are respectively provided with a holding unit for holding the pole tightly and a branch line unit for lifting the wire on the top of the pole. Composed of U-shaped wire support trough and right-angled wire retaining rod, in which the hoop-shaped connecting seat is connected with the insulating cross bar, the upper end of the hoop-shaped connecting seat is provided with a U-shaped wire supporting trough, and the closed end of the U-shaped wire supporting trough Connected with the hoop-type connecting seat, the upper end of the opening end of the U-shaped support groove is provided with a right-angled line retaining rod. The right-angled line retaining rod is divided into a line retaining part and a counterweight part. One end of the line retaining part is close to the U-shaped The other end of the support arm of the support wire trough is hinged with the side of the other support arm of the U-shaped support wire trough through the pin shaft and connected with the counterweight part. The support arm at the lower end of the pin shaft is provided with a rotation stop bar; The tightening unit is composed of a connecting ferrule, a support and a ratchet type bandage tensioner, wherein the connecting ferrule is connected with the insulating cross bar, the front side of the connecting ferrule is provided with a support, and the right side of the support is provided with a pin The side ear of the hole, the pin hole on the ratchet type bandage tensioner and the pin hole on the right side ear of the support are hinged through the latch, and one end of the holding belt on the ratchet type bandage tensioner is wrapped around the ratchet type bandage tensioner On the ratchet shaft, the other end is drawn out from the ratchet shaft and connected to the right side of the support. There is a fine-tuning locker between the support and the holding belt. The fine-tuning locker is composed of a threaded sleeve and a bolt. The bolt The casing is connected with the support, and the bolt casing is connected with the holding belt through the bolt. The rear end of the bolt casing is provided with a rotating handle, and the fine adjustment of the holding belt is realized by rotating the bolt casing; the branch line unit is composed of a telescopic It is composed of a support rod, a support arm and a wire lifting hook, wherein the telescopic support rod is controlled by a hydraulic cylinder, and the hydraulic cylinder is a manual jack. There is a support arm, and the lower end of the support arm is equipped with a wire lifting hook for lifting the wire; the method of use is: first adjust the position of the support unit on the insulating cross bar according to the position of the insulator string on the cross arm, and then install the device on the Above the cross-arm to be replaced, the ratchet-type bandage tensioner and fine-tuning locker in the holding unit of the device are tightly hugged on the utility pole, and then the insulators on both sides of the cross-arm are connected to each other through the insulation operating rod. The wires are picked up and put into the U-shaped wire support groove in the support line unit to realize the replacement of the cross arm and the insulator string on the cross arm, and then the support rod is lowered by the hydraulic cylinder, so that the wire lifting hook in the branch line unit catches the wire , and then lift the pole through the hydraulic cylinder to support the wires to realize the replacement of the insulator strings on the top of the poles. The hole is rotated so that the rotation of the retaining rod does not block the removal of the wire, and then the wire is taken out through the operating rod and placed on the replaced insulator string. On the insulator string, realize the overall replacement of the wires in the support line unit and the branch line unit, and finally take off the device.

The support in the clamping unit of the present invention is provided with an arc-shaped fixing seat matched with the utility pole, which increases the connection stability between the utility pole and the support, and further increases the connection stability between the utility pole and the overall device.

The end of the counterweight portion of the wire retaining rod in the wire supporting unit according to the present invention is provided with an operation hole to prevent manual and accurate operation when the wire retaining rod does not rotate.

The lower ends of the insulating cross bars on the left and right sides of the holding unit according to the present invention are respectively provided with reinforcing ribs, the upper ends of the reinforcing ribs are connected with the insulating cross bars, and the lower ends of the reinforcing ribs are inclined inwardly and have a The matching arc-shaped reinforcement plate ensures the structural stability of the overall device.

The upper end of the support arm at the opening end of the U-shaped wire support trough in the branch line unit of the present invention is provided with a transition plate inclined to the outside, which increases the controllable range of the wire entering the U-shaped wire support groove and reduces the labor intensity of the staff.

Since the present invention is provided with an insulating cross bar, the left and right sides of the insulating cross bar are symmetrically provided with supporting wire units for supporting the wires on both sides of the cross arm, and the front and rear sides of the middle part of the insulating cross bar are respectively provided with The holding unit of the utility pole and the branch line unit used to lift the wire on the top of the utility pole are three units in one, which can not only replace the cross arm, but also replace the insulator string on the cross arm, and at the same time replace the insulator string on the top of the utility pole , has the advantages of reasonable structure, convenient replacement, manpower saving and high work efficiency.

Description of drawings

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

Fig. 2 is a front view of the clasping mechanism in the present invention.

Fig. 3 is a top view of the clasping unit in the present invention.

Fig. 4 is a front view of the wire support unit in the present invention.

Fig. 5 is a front view of the branch line unit in the present invention.

Fig. 6 is a left side view of the linear unit in the present invention.

detailed description

The present invention is further described below in conjunction with accompanying drawing:

As shown in the accompanying drawings, a device and method for replacing cross-arms and insulator strings with electricity is characterized in that an insulating cross-bar 1 is provided, and the left and right sides of the insulating cross-bar 1 are symmetrically provided with two sides of the cross-arm The wire support unit 2 of the electric wire, the front and rear sides of the middle part of the insulating cross bar 1 are respectively provided with a holding unit 3 for holding the electric pole tightly and a branch line unit 4 for lifting the electric wire on the top of the electric pole. Unit 2 is composed of a hoop-type connecting seat 5 with adjustable position, a U-shaped wire support groove 6 and a right-angled wire retaining rod 7, wherein the hoop-type connecting seat 5 is connected with the insulating cross bar 1, and the hoop-type connecting seat The upper end of the 5 is provided with a U-shaped wire support groove 6, and the closed end of the U-shaped wire support groove 6 is connected with the hoop type connecting seat 5, and the upper end of the open end of the U-shaped wire support groove 6 is provided with a right-angle type retaining rod 7, The right-angle wire retaining rod 7 is divided into a wire retaining part and a counterweight part. One end of the wire retaining part is close to the support arm of the U-shaped wire support groove 6, and the other end is connected to the side of the other arm of the U-shaped wire support groove 6 through the pin shaft. It is hinged and connected with the counterweight part, and the support arm at the lower end of the pin shaft is provided with a stop bar 8; the clamping unit 3 is composed of a connecting ferrule 9, a support 10 and a ratchet bandage tensioner 11, The structure of the various components of the ratchet type bandage tensioner 11 and the interconnection relationship between them are the same as those of the prior art, and will not be described in detail here. Wherein, the connecting ferrule 9 is connected with the insulating cross bar 1, and the connecting ferrule 9 The front side is provided with a support 10, and the right side of the support 10 is provided with a side ear 12 with a pin hole, and the pin hole on the ratchet type bandage tensioner 11 is hinged with the pin hole on the right side ear 12 of the support through a latch 13 One end of the holding belt 16 on the ratchet type bandage tensioner 11 is wound on the ratchet shaft of the ratchet type bandage tensioner 11, and the other end is drawn out from the ratchet shaft and connected with the right side of the support 10, the support A fine-tuning locker is provided between the seat 10 and the holding belt 16. The fine-tuning locker is composed of a threaded sleeve 14 and a bolt 15. The bolt sleeve 14 is connected with the support 10. The belt 16 is connected, the rear end of the bolt sleeve 14 is provided with a rotating handle 25, and the rotation of the bolt sleeve 14 realizes the fine adjustment of the belt 16; the branch line unit 4 is composed of a telescopic pole 17, a support arm 18 and a wire Hook 19 is made up of, and wherein, telescopic pole 17 is controlled by hydraulic cylinder 22, and hydraulic cylinder is a manual jack, and the lower end of telescopic pole 17 is connected with the rear side of connection ferrule 9, and the upper end of telescopic pole 17 is provided with support. Arm 18, the lower end of the support arm 18 is provided with a wire hook 19 for lifting the electric wire, and the support 10 in the described holding unit 3 is provided with an arc-shaped fixing seat 20 matched with the utility pole to increase the distance between the utility pole and the support. The connection stability of the seat 10 further increases the connection stability between the utility pole and the overall device. The end of the counterweight part of the wire retaining rod 7 in the wire support unit 2 is provided with an operation hole 21 to prevent the wire retaining rod 7 from Manual operation can be performed accurately when not rotating. The lower ends of the insulating crossbars 1 on the left and right sides of the holding unit 3 are respectively provided with reinforcement ribs 26, and the upper ends of the reinforcement ribs 16 are connected with the insulating crossbar 1. The reinforcement ribs 26 The lower end of the lower end is inclined to the inside and is provided with an arc-shaped reinforcing plate 23 matching the arc of the utility pole, so that the structure of the overall device is stable. The upper end of the support arm at the opening end of the U-shaped wire support groove 6 in the branch line unit 4 is provided with a transition plate 24 inclined to the outside, which increases the controllable range of the wire entering the U-shaped wire wire groove 6 and reduces the number of workers. labor intensity.

When the present invention is in use, first adjust the position of the wire support unit 2 on the insulating cross bar 1 according to the position of the insulator string on the cross arm, and then install the device above the cross arm to be replaced, through the holding of the device The ratchet bandage tensioner 11 and the fine-tuning locker in the tightening unit 3 are tightly hugged on the electric pole, and then the wires on the insulator strings on both sides of the cross arm are picked up and put into the U in the wire support unit 2 through the insulation operating rod. In the type support wire groove 6, the cross arm and the insulator string on the cross arm are replaced, and then the support rod 17 is lowered by the hydraulic cylinder 22, so that the wire lifting hook in the branch line unit 4 catches the wire, and then lifted by the hydraulic cylinder 22 The support rod 17 supports the electric wires to realize the replacement of the insulator string on the top of the electric pole. After the replacement of the cross arm and the insulator string is completed, the electric wire in the wire support unit 2 first rotates the operation hole 21 in the line retaining rod 7 through the operating rod , so that the wire retaining rod 7 rotates without blocking the taking out of the electric wire, and then the electric wire is taken out through the operating rod and placed on the replaced insulator string. Good insulators are strung together to realize the overall replacement of the wires in the support line unit 2 and the branch line unit 4, and finally the device is removed. Through the device of the invention, the insulating cross bar 1 in the device can be used as a temporary cross arm, which can To ensure normal power-on operation and reduce the risk of operation, in the present invention, due to the reasonable design of the wire retaining rod 7 on the U-shaped wire support groove 6 in the wire support unit 3, when the wire enters the U-shaped wire support groove 6, the wire retaining rod 7 automatically locks the opening of the U-shaped wire support groove 6 due to its counterweight to prevent the wires from slipping out. Reasonable design guarantees the safety of operation and prevents serious safety hazards caused by wire slippage; in the holding unit 3, due to the ratchet type bandage tensioner 11 and the fine-tuning locker, the connection between the device and the utility pole is increased. Stability, thereby increasing the safety of operation. In the branch line unit 4, since the hydraulic cylinder 22 controls the lifting of the strut 17, the upward and downward movement of the wire can be realized safely. At the same time, the insulation on the left and right sides of the holding unit 3 There is a reinforcing rib 26 with an arc-shaped plate 23 on the horizontal 1 to strengthen the stability of the whole device. The three units are integrated, which can not only replace the cross arm, but also replace the insulator string on the cross arm, and at the same time change the wires The insulator string at the top of the rod has the advantages of reasonable structure, convenient replacement, manpower saving and high working efficiency.

Claims (5)

1. A device and method of use for live replacement of cross-arm and insulator strings, characterized in that an insulating cross-bar is provided, and the left and right sides of the insulating cross-bar are symmetrically provided with supporting wire units for supporting the electric wires on both sides of the cross-arm, The front and rear sides of the middle part of the insulating horizontal bar are respectively provided with a holding unit for holding the pole tightly and a branch unit for lifting the wire on the top of the pole. The support unit is connected by a hoop type with adjustable position. It is composed of seat, U-shaped wire trough and right-angled wire retaining rod. Among them, the hoop-shaped connecting seat is connected with the insulating cross bar. The closed end is connected with the hoop-type connecting seat, and the upper end of the open end of the U-shaped wire support groove is provided with a right-angle wire retaining rod. The right-angle wire retaining rod is divided into a wire retaining part and a counterweight part. One end of the wire retaining part is close to the The other end of the support arm of the U-shaped wire trough is hinged to the side of the other arm of the U-shaped wire trough through the pin shaft and connected to the counterweight. The arm at the lower end of the pin shaft is provided with a stop bar; The clamping unit is composed of a connecting ferrule, a support and a ratchet type bandage tensioner, wherein the connecting ferrule is connected with the insulating cross bar, the front side of the connecting ferrule is provided with a support, and the right side of the support is provided with a belt Side ears with pin holes, the pin holes on the ratchet bandage tensioner and the pin holes on the right side ear of the support are hinged through the latch, and one end of the holding belt on the ratchet bandage tensioner is wrapped around the ratchet bandage tensioner On the ratchet shaft of the tensioner, the other end is led out from the ratchet shaft and connected to the right side of the support. There is a fine-tuning locker between the support and the holding belt, and the fine-tuning locker is composed of a threaded sleeve and a bolt. , the bolt sleeve is connected with the support, the bolt sleeve is connected with the holding belt through the bolt, the rear end of the bolt sleeve is provided with a rotating handle, and the rotating bolt sleeve realizes the fine adjustment of the holding belt; the branch line unit is composed of It consists of a telescopic pole, a support arm and a wire hook, wherein the telescopic pole is controlled by a hydraulic cylinder, the lower end of the telescopic pole is connected to the rear side of the ferrule, and the upper end of the telescopic pole is provided with a support arm. The lower end of the support arm is equipped with a wire hook for lifting the wire; the method of use is: first adjust the position of the wire support unit on the insulating cross bar according to the position of the insulator string on the cross arm, and then install the device on the required replacement Above the cross arm, the ratchet bandage tensioner and fine-tuning locker in the holding unit of the device are tightly hugged on the utility pole, and then the wires on the insulator strings on both sides of the cross arm are picked up and released by the insulation operating rod. Put it into the U-shaped support groove in the support line unit to replace the cross arm and the insulator string on the cross arm, and then lower the support rod through the hydraulic cylinder, so that the wire lifting hook in the branch line unit hooks the wire, and then through the hydraulic pressure The oil cylinder lifts the support pole and supports the wires to realize the replacement of the insulator strings on the top of the utility pole. After the replacement of the cross arm and the insulator strings is completed, the wires in the wire support unit first rotate the operation hole in the wire retaining rod through the operating rod to make the The rotation of the retaining rod does not block the removal of the wires, and then the wires are taken out through the operating rod and placed on the replaced insulator string. The wires in the branch line unit are first lowered by the hydraulic cylinder, and the wires are placed on the replaced insulator string. Realize the overall replacement of the electric wires in the support line unit and the branch line unit, and finally take off the device. 2. The device and method for replacing cross-arms and insulator strings with live charging according to claim 1, characterized in that the support in the clamping unit is provided with an arc-shaped fixing seat that matches the utility pole. 3. A device and method for live replacement of cross-arms and insulator strings according to claim 1, characterized in that an operation hole is provided at the end of the counterweight portion of the wire retaining rod in the wire support unit. 4. A device and method for live replacement of crossarms and insulator strings according to claim 1, characterized in that the lower ends of the insulating crossbars on the left and right sides of the holding unit are respectively provided with reinforcement ribs to reinforce The upper end of the rib is connected with the insulating cross bar, and the lower end of the reinforcing rib is inclined inwardly and is provided with an arc-shaped reinforcing plate matched with the arc of the utility pole. 5. A device and method for live replacement of crossarms and insulator strings according to claim 1, characterized in that the upper end of the support arm at the opening end of the U-shaped support groove in the branch line unit is provided with an inclination to the outside transition board.