CN102966301B - Live working sliding board - Google Patents

Abstract

The invention discloses a slide for live work, which comprises an insulating ladder erected between a pole tower and a wire. The insulating ladder includes two main columns arranged in parallel. Bolt A is an insulating crosspiece fixedly connected to the main column; the end of the main column on the wire side of the insulation ladder is provided with a hook for hanging the wire, and the middle part of the main column is slidably fitted with a sliding platform for standing; the insulation A diverter for clamping the cross-arm of the tower is also provided on the tower side of the ladder, and one end of the diverter is fixedly arranged on the steel pipe arranged between the two main columns through a through-hole bolt. The invention is safe, reliable and easy to use, can meet the requirements of live-work operators with different angles between the cross-arm and the wire, and greatly improves the safety and efficiency of live-work.

Description

Live working slide

technical field

The invention relates to a tool used in the field of electric power construction, in particular to a live working ladder.

Background technique

At present, the demand for power load continues to increase significantly, and users have put forward higher requirements for power quality, power outage time, frequency and reliability, etc., carry out live construction operations, reduce the scope and time of power outages, and ensure that users' demand for power is met. Become a development requirement in the field of power transmission.

Live work refers to a method of repairing and testing high-voltage electrical equipment without power failure. Live work can be divided into three categories according to the relationship between the human body and the charged body: equipotential work, ground potential work and intermediate potential work. Among them, the equipotential work is that the operator raises the potential of his own body to the potential of the live part through electrical connection, and is properly isolated from the surrounding different potentials to directly work on the live part. At present, when carrying out equipotential work on poles and towers of 110kV and above lines, insulating ladders or insulating soft ladders are often used to enter the work site. ; However, due to the influence of factors such as the tower type, the conductor and the relative position of the cross arm, these two methods still have the following potential safety hazards:

1) The safety distance is insufficient, for example: 110kV cat head tower, in which the phase conductor is 1918mm away from the tower body, and the side phase conductor is only 2000mm away from the tower body. It is necessary to short another 300mm. According to the regulations on live work in the "State Grid Corporation Electric Power Safety Work Regulations" (power line part), "when the voltage level is 110kV, the minimum safe distance for live work shall not be less than 1000mm, and the minimum combination gap shall not be less than 1200mm", Obviously, when carrying out live work on this tower, it will be difficult to ensure the normal development of live work if the conventional work method is followed;

2) It is difficult to return, for example: due to the sagging insulator strings on the tension tower, the slope of the insulation ladder is relatively large after erection, and the slope of the flat ladder may even exceed 30 degrees after the operator climbs the ladder, making it difficult for the operator to return after work;

3) The side of the insulating ladder pole tower is fixedly connected with the cross arm, and its installation has higher requirements on the shape and angle of the cross arm;

4) The safety factor is poor. Because the ladder body is relatively smooth, the stability is not good, and the operation station is inconvenient, which has a certain impact on the safety of high-altitude operations.

The invention patent with the publication number CN 102383719A discloses an insulating slide used for maintenance of power transmission lines, including a ladder body, a movable seat and a slide hook. The ladder body is the main body of the load, and the sliding seat is installed on the ladder body And can slide along the ladder body, the sliding seat is provided with locking parts that can be locked with the ladder body, the slide hook is arranged at the front end of the ladder body, and the slide hook is used to hang the ladder body on the wire. Although some of the above shortcomings can be overcome, since the insulating slide adopts the hanging method, and the connection with the pole and tower ends is fixedly connected with a flexible lock (such as a rope), the insulating slide is prone to horizontal swings, which is dangerous to a certain extent. There are certain requirements for the setting position of the cross arm, and in addition, the rope connection also has the problem of wear and tear, which is unsafe to a certain extent.

Contents of the invention

The technical problem to be solved by the present invention is to provide a safe and reliable slide that can meet the requirements of different angles between the cross arm and the wire, and facilitate the live work of the workers.

In order to solve the above technical problems, the technical solution adopted by the present invention is a live working slide, including an insulating ladder erected between the pole tower and the conductor, the insulating ladder includes two main columns arranged in parallel, between the two main columns Evenly distributed, there are several insulating crosspieces whose ends are fixedly connected to the main column through the through-hole bolts A; the end of the main column on the wire side of the insulation ladder is provided with a hook for hooking the wire, and the middle part of the main column slides and fits There is a slide table for the station; the tower side of the insulating ladder is also provided with a diverter for clamping the cross-arm of the tower, and one end of the diverter is fixedly arranged between the two main columns through the through-bolt C on the steel pipe.

The further improvement of the specific structure of the present invention is that: the diverter includes an ear plate fixedly arranged on the steel pipe on the side of the insulating ladder pole tower, the outer end of the ear plate is hinged to a ∏-shaped connector through the pivot pin A, and the closure of the ∏-shaped connector The end is hinged to a fixture that is clamped with the cross arm of the tower through the pivot pin B.

The further improvement of the specific structure of the present invention lies in that: the end face of the movable bayonet of the fixture in contact with the cross arm of the pole and tower is serrated.

The further improvement of the specific structure of the present invention is that: the slide table includes an insulating plate arranged above the main column through two side plates located outside the main column, and each of the side plates near the end surface of the main column is respectively provided with four The pulley is slidingly matched with the main column and snapped together with the upper and lower edges of the main column.

The further improvement of the specific structure of the present invention is that: a ring frame is fixedly arranged on the side of the side plate close to the pole tower, and the top end of the ring frame is fixedly connected with a ring for tying a safety rope.

The further improvement of the specific structure of the present invention is that: the insulating plate is provided with an insulating cable for sliding the slide table along the main column, one end of the insulating cable is fixedly connected to one side of the insulating plate, and the other end of the insulating cable One end is fixed on the other side of the insulating plate after going through the fixed pulley on the wire side of the insulation ladder and the steel pipe on the cross arm side of the insulation ladder in sequence;

The further improvement of the specific structure of the present invention lies in that: the through-hole bolt B is fitted with an insulating tube.

The further improvement of the specific structure of the present invention lies in that: the edge of the fixed pulley is provided with a baffle for preventing the insulation cable from falling off.

Due to the adoption of the above technical solution, the technical progress of the present invention lies in: the present invention provides a safe and reliable slide that can meet the requirements of different angles between the cross arm and the wire, which is convenient for the operator to work with electricity. Equipotential operators sit on the sliding platform to work, which eliminates the defect of unstable position of the insulating ladder, and only occupies the space required by the human body during operation, avoiding excessive space caused by the body leaning forward and backward during the movement The problem of being short-circuited ensures a sufficient safe distance for live work and provides protection for the personal safety of operators.

In the present invention, a fixed pulley is arranged at the front end of the slide, and the fixed pulley, the insulating cable and the slide table form a closed loop. The process of the charged operator entering and exiting the strong electric field is completed by the ground potential assistant personnel by pulling the insulating rope to control the advance and retreat of the slide table. The live workers do not need to operate by themselves, which not only saves the physical strength of the live workers but also improves the work efficiency. In order to prevent the insulation cable from slipping and fix the position of the fixed pulley, a baffle is set on the fixed pulley. An insulating tube is installed to further ensure the smooth operation of the slide table.

A ring frame for fastening a safety belt is arranged above the slide table of the present invention, and the safety belt can be fastened to the ring frame by live workers when working, which enhances the safety of live work.

In the present invention, the lug plate of the steering gear, the ∏-shaped connector, the ∏-shaped connector and the fixture are all hinged with pivot pins, so that the steering gear can rotate in all directions, and the installation on the side of the pole tower of the live work slide can be independent of the size of the cross arm and the Due to the influence of the angle, the slide can always be kept horizontal, which further enhances the convenience of using the live work slide; the end face of the movable bayonet of the steering gear fixture is designed in a jagged shape, which increases the stability of the fixture after it is clamped to the cross arm of the pole tower. At the same time, because the steering gear uses metal materials to realize the fixation between the live working slide and the pole tower, the steering gear has extremely high wear resistance and its service life is greatly extended.

Description of drawings

Fig. 1 is a schematic diagram of the main view structure of the present invention;

Fig. 2 is a schematic view of the top view structure of the present invention;

Fig. 3 is the schematic diagram of side view structure of the present invention;

Fig. 4 is a structural schematic diagram of the steering gear of the present invention.

In the figure: 1, insulating ladder, 1-1, main column, 1-2, insulating crosspiece, 1-3, through-hole bolt A, 1-4, fixed pulley, 1-5, insulating pipe, 1-6, Baffle plate, 1-7, center bolt B, 1-8, hook, 1-9, steel pipe, 1-10, center bolt C, 2, steering gear, 2-1, lug plate, 2-2, Axle pin A, 2-3, Π-type connector, 2-4, fixture, 2-4-1, movable bayonet, 2-5, axle pin B, 3, slide table, 3-1, side plate, 3-2, insulation board, 3-3, pulley, 3-4, rotating shaft, 3-5, hanging ring frame, 3-5-1, pull ring, 4, insulating cable, 5, pole tower cross arm.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

A live work slide, including an insulating ladder 1 erected between a pole tower and an equipotential conductor, the insulating ladder 1 is the main body of the load; a sliding platform 3 is arranged above the insulating ladder 1, and the sliding platform 3 can move along the main column 1 of the insulating ladder 1- 1 sliding; the end of the main column 1-1 on the wire side of the insulating ladder 1 is provided with a hook 1-8, and the hook 1-8 is used to hook the wire; In card connection pole tower cross arm 5. The hook 1-8 and the diverter 2 fix the live work slide between the wire and the pole tower, and the hook 1-8 and the diverter 2 are the bearing points of the whole live work slide.

The insulating ladder 1 includes two main columns 1-1 arranged in parallel, and several insulating rungs 1-2 are evenly distributed between the two main columns 1-1, and the two ends of the insulating rungs 1-2 are passed through the core bolts respectively. A1-3 is fixedly connected with main column 1-1. The length of the main column 1-1 is determined according to the voltage level. In this embodiment, the live working slide is applied to the equipotential working condition with a voltage level of 110kV, and the length of the main column 1-1 is 2.4m; the section of the main column 1-1 It is oval, with a long diameter of 60mm, a short diameter of 30mm, and a wall thickness of 5mm. An insulating crosspiece 1-2 is embedded every 400mm between the two main columns 1-1, and the insulating crosspiece 1-2 is 300mm long, 30mm in diameter and 5mm in wall thickness.

One end of the insulation ladder 1 close to the wire is provided with a through-bolt B1-7, the two ends of the through-bolt B1-7 are respectively fixed on the two main columns 1-1, and the middle part of the through-bolt B1-7 is provided with a certain pulley 1- 4. An insulating tube 1-5 is set on the through-bolt B1-7 on both sides of the fixed pulley 1-4. A steel pipe 1-9 is arranged at one end of the insulating ladder 1 close to the pole tower, and the steel pipe 1-9 is arranged between the two main columns 1-1 through the through-hole bolt C1-10, and the two ends of the through-hole bolt C1-10 are respectively fixed on two The main column is 1-1. In this embodiment, the inner diameter of the steel pipe 1-9 is 15 mm, and the wall thickness is 5 mm.

The steering gear 2 includes an ear plate 2-1, one end of the ear plate 2-1 is fixedly connected to the outer surface of the middle part of the steel pipe 1-9 on the side of the insulation ladder 1 tower; the outer end of the ear plate 2-1 is connected to the aluminum alloy through the shaft pin A2-2 The open end of the Π-shaped connector 2-3 made of material is hinged; the closed end of the Π-shaped connector 2-3 is hinged to a clamp 2-4 through the pivot pin B2-5; the clamp 2-4 is clamped with the pole tower cross arm 5, The end face where the movable bayonet socket 2-4-1 of the fixture 2-4 is clamped with the pole tower cross arm 5 is set in a sawtooth shape.

The slide table 3 includes an insulating plate 3-2 arranged in parallel above the main column 1-1, and the insulating plate 3-2 is positioned by the side plates 3-1 arranged on both sides of the insulating ladder 1; each side plate 3-1 is close to the main column. Four pulleys 3-3 are respectively arranged on the end faces of the columns 1-1, and the pulleys 3-3 are arranged on the side plates 3-1 through the rotating shafts 3-4. The positions of the four pulleys 3-3 form a square structure, in which two pulleys 3-3 are located above the main column 1-1, and the other two pulleys 3-3 are located below the main column 1-1, and the upper and lower pulleys 3-3 are opposite to each other. The main column 1-1 is arranged to be clamped tightly, and can slide along the main column 1-1.

On the side of the side plate 3-1 close to the cross arm 5 of the pole tower, a ring frame 3-5 is fixedly arranged, and a ring 3-5-1 is arranged on the top of the ring frame 3-5, and the ring 3-5-1 For hanging safety rope or safety belt. An insulating cable 4 is arranged on the insulating plate 3-2, and the insulating cable 4 is used to make the slide table 3 slide along the main column 1-1. One end of the insulating cable 4 is fixedly connected on one side of the insulating plate 3-2, and the other One end passes through the fixed pulley 1-4 on the wire side of the insulation ladder 1 and the steel pipe 1-9 on the tower side of the insulation ladder 1 in turn, and is fixed on the other side of the insulation board 3-2. 4 can control the forward or backward of slide table 3. In this embodiment, the diameter of the insulating cable 4 is 12mm, and the relationship between its length and the length of the insulating ladder 1 is: (the length of the insulating ladder 1+2m)×2m.

In this embodiment, a baffle plate 1-6 is arranged on the edge of the fixed pulley 1-4 to prevent the insulating cable 4 on the fixed pulley 1-4 from falling off during the pulling process.

When the present invention is in use, first hook the hooks 1-8 on the lead wire side of the live work slide on the lead wire, the diverter 2 on the tower side is clamped on the tower cross arm 5 of the tower, and the slide table 2 is placed on the tower side ; Then the equipotential operator sits on the slide platform 2, and simultaneously fastens the safety belt in the draw ring 3-5-1 of the hanging ring frame 3-5; after getting ready, the ground potential auxiliary operator on the tower pulls the insulation cable 4, the traction slide 2 advances to the working position, and when the operation is finished, the ground potential auxiliary operator pulls the insulating rope 4, the traction slide 2 retreats to the pole tower side, and the equipotential operator slides down the slide 2 to the pole tower, and the operation ends.

Claims (6)

1. livewire work slide, comprise the insulating ladder (1) being erected between shaft tower and wire, described insulating ladder (1) comprises two principal posts that be arranged in parallel (1-1), evenly between two principal posts (1-1) is furnished with the insulation crosspiece (1-2) that some radicles are fixedly connected with principal post (1-1) by punching bolt A (1-3); Principal post (1-1) end of described insulating ladder (1) side of wire was arranges have contact with (1-8) for hook wire, and the middle part of principal post (1-1) is slidably matched and is useful on the slide unit (3) of erect-position; It is characterized in that: the shaft tower side of described insulating ladder (1) also arranges a steering gear for clamping cross arm of tower (5) (2), one end of described steering gear (2) is fixedly installed on by punching bolt C (1-10) and is arranged on the steel pipe (1-9) between two principal posts (1-1);

Described steering gear (2) comprises the otic placode (2-1) on the steel pipe (1-9) that is fixedly installed on insulating ladder (1) shaft tower side, the outer end of otic placode (2-1) is by the hinged ∏ type connector (2-3) of pivot pin A (2-2), and the blind end of ∏ type connector (2-3) is the jig (2-4) with cross arm of tower (5) clamping by pivot pin B (2-5) hinged;

The end face that the movable bayonet (2-4-1) of described jig (2-4) contacts with cross arm of tower (5) is zigzag.

2. livewire work slide according to claim 1, it is characterized in that: described slide unit (3) comprises that the biside plate (3-1) by being positioned at principal post (1-1) outside is arranged on the insulating slab (3-2) of principal post (1-1) top, described each side plate (3-1) near the end face of principal post (1-1) by rotating shaft (3-4) be respectively provided with four be slidably matched with principal post (1-1) and with the upper and lower pulley (3-3) along clamping of principal post (1-1).

3. livewire work slide according to claim 2, it is characterized in that: described side plate (3-1) is fixedly installed a draw ring frame (3-5) near on the side of shaft tower side, and the top of draw ring frame (3-5) is fixedly connected with and is useful on is the draw ring (3-5-1) of safety rope.

4. livewire work slide according to claim 2, it is characterized in that: on described insulating slab (3-2), be provided with the insulation drag-line (4) for slide unit (3) is slided along principal post (1-1), one end of described insulation drag-line (4) is fixedly connected in insulating slab (3-2) side, and the other end of insulation drag-line is successively through being arranged on the opposite side that is fixed on insulating slab (3-2) after the steel pipe (1-9) of fixed pulley (1-4), insulating ladder (1) cross-arm side of insulating ladder (1) side of wire was; Described fixed pulley (1-4) is arranged between two principal posts (1-1) by punching bolt B (1-7).

5. livewire work slide according to claim 4, is characterized in that: in described punching bolt B (1-7), be set with insulation tube (1-5).

6. livewire work slide according to claim 4, is characterized in that: the edge of described fixed pulley (1-4) is provided with the baffle plate (1-6) coming off for the drag-line (4) that prevents from insulating.