CN203056454U - 500kV ground wire support upturned pulley - Google Patents

Abstract

The utility model discloses a 500kV ground wire bracket facing sky pulley, which is composed of a base, a pulley frame, a pulley frame rotating shaft and a line block, a pulley is installed in the pulley frame, and the pulley frame moves through the pulley frame rotating shaft and a plane bearing Installed on the base, the pulley frame can rotate horizontally on the base. After the steel wire rope passes through the pulley on the pulley frame from above, it avoids mutual friction with the tower material, and improves the stroke of the lifting ground wire. During the process of lifting the lightning protection ground wire There will be no inflexible rotation of the upturned block on the longitudinal and transverse planes. The utility model effectively reduces the frictional force of the vertical and horizontal plane rotation of the sky block, and even under the working condition of a large back gear, the sky block will not rotate sluggishly due to excessive pressure. The utility model has the advantages of being able to reduce the frictional force of the skyward tackle rotating on the vertical plane and the horizontal plane, facilitating the ground wire operation and maintenance work during maintenance, avoiding hidden dangers of operation, flexible rotation, and improving work efficiency.

Description

500kV ground wire support overhead pulley

technical field

The utility model relates to electric power equipment, in particular to a 500kV ground wire support overhead pulley. the

Background technique

In recent years, with the continuous improvement of the power grid and the continuous development of transmission lines, 500kV transmission lines have gradually increased. Lightning protection ground wires (steel strands and optical cables, etc.) are important transmission line components that protect conductors from direct lightning strikes. A large number of ground wire maintenance operations are carried out every year. During these maintenance operations, operators will be placed on the ground wire support The combination of chain hoist and wire rope is used to lift the ground wire, so that it is convenient for the operator to repair the damaged part. During the hoisting process, the steel wire rope is easily rubbed against the ground wire support, especially the back-to-back irons at the ground wire hanging points. Even if the anti-friction pads are used, the shear force formed by the back-to-back irons on the wire rope cannot be avoided. If encountering the working conditions with large gap and height difference between the large and small side towers (commonly known as: large back gear), the characteristics of shear force on the wire rope will bring great safety hazards to the operators. . the

Contents of the invention

The purpose of the utility model is to provide a 5500kV ground wire support overhead block which can reduce the friction force of the vertical and horizontal plane rotation of the overhead block, facilitate the ground wire operation and maintenance operation during maintenance, and avoid the hidden dangers of the operation. the

The purpose of this utility model is achieved in that:

A 500kV ground wire support overhead block, including a base composed of four supporting feet and a base top plate, characterized in that: the four supporting feet are stuck on the bench iron of the high-voltage iron tower in pairs, and the opposite and adjacent two supporting feet An "L"-shaped lug is installed on the outer wall of each lug, and lug holes are processed on the lugs. Screws pass through the lug holes on the lugs to fix the base on the back-to-back iron of the high-voltage iron tower to prevent the base from sliding. , a top plate hole is processed in the middle of the top plate of the base; the pulley frame is composed of a pulley frame bottom plate, two identical pulley shaft plates, and a pulley. The bottom ends of the two pulley shaft plates are vertically fixed on the pulley frame bottom plate and stand opposite each other. Each of the two pulley shaft plates is machined with a shaft plate hole corresponding to the position and the same shape. The pulley shaft passes through and crosses the two shaft plate holes. A pulley shaft nut is installed, and the two pulley shaft nuts fix the pulley shaft on the two pulley shaft plates. Rolling bearings and two spacer sleeves are set on the pulley shaft between the two pulley shaft plates. The two spacer sleeves are installed At both ends of the rolling bearing, it is used to prevent the rolling bearing from swinging left and right, and the pulley is set on the rolling bearing; the bottom plate of the pulley frame is processed with the same bottom plate hole as the top plate hole, and a plane bearing is placed horizontally between the top plate of the base and the bottom plate of the pulley frame The rotating shaft of the pulley frame passes through the round hole of the bottom plate, the plane bearing and the round hole of the top plate sequentially from top to bottom, and an external thread is processed at the bottom of the rotating shaft of the pulley frame, and the rotating shaft nut whose outer diameter is larger than the diameter of the round hole of the top plate is screwed on the pulley The bottom end of the rotating shaft of the frame, the bolt of the rotating shaft nut passes through the side wall of the rotating shaft nut and the bottom end of the rotating shaft of the pulley frame horizontally, and fixes the rotating shaft nut and the rotating shaft of the pulley frame together, and the pin of the bottom plate passes through the bottom plate of the pulley frame horizontally The top of the side wall and the pulley frame rotating shaft, the pulley frame bottom plate and the pulley frame rotating shaft are fixed together.

A wire retaining lug is processed on the top of the outer wall of the two pulley shaft plates. The left end of the "冂" shaped wire retaining block is hinged to the left wire retaining lug through a hinge shaft, and the right end of the wire retaining block passes through the The wire retaining block latch is movably installed on the wire retaining block lug on the right. the

In the middle of the bottom of the bottom plate of the pulley frame, there is an upper groove of the plane bearing with the opening facing downwards and the diameter is larger than the diameter of the round hole of the bottom plate, and in the middle of the top of the top plate of the base is processed with a lower groove of the plane bearing with the opening facing upwards and the diameter of which is larger than the diameter of the round hole of the top plate The plane bearing is embedded between the upper groove of the plane bearing on the bottom plate of the pulley frame and the lower groove of the plane bearing on the top plate of the base to prevent the movement of the plane bearing. the

Rolling bearings consist of two identical sub-rolling bearings side by side. the

The utility model is composed of a base, a pulley frame, a pulley frame rotating shaft and a wire retaining block. After the steel wire rope passes through the pulley on the pulley frame from above, mutual friction with the tower material is avoided, and the stroke of lifting the ground wire is improved. In order to allow the utility model to work in a stable state, the pulley frame is movably installed on the base through the pulley frame rotating shaft and the plane bearing, so that the pulley frame can rotate horizontally on the base, plus the pulley on the pulley frame, thus In the process of lifting the lightning protection ground wire, there will be no inflexible rotation of the sky block on the longitudinal and lateral planes. The utility model utilizes the characteristics of plane bearings and rolling bearings to effectively reduce the frictional force of the vertical and horizontal planes of the overhead block. At the same time, longitudinal rolling bearings are installed inside the pulley. There will be no rotation hysteresis due to excessive pressure. The wire retaining block can prevent the steel wire rope from slipping out and sliding upwards. Therefore, the utility model has the functions of reducing the frictional force of the skyward block rotating on the vertical plane and the horizontal plane, making it convenient to carry out ground wire work and maintenance work during maintenance, avoiding hidden dangers of operation, flexible rotation, improving work efficiency, reducing operating costs, light weight, The advantages of convenient transportation, easy to carry, suitable for high-altitude operations. the

Description of drawings

Fig. 1 is the sectional view of the utility model;

Fig. 2 is a left side view of Fig. 1 .

Detailed ways

Below in conjunction with embodiment and with reference to accompanying drawing, the utility model is described in further detail. the

A 500kV ground wire support overhead pulley, including a base 1 composed of four support feet 2 and a base top plate 3, the four support feet 2 are stuck on the bench iron of the high-voltage iron tower in pairs, and the opposite and adjacent two support An "L"-shaped lug 4 is installed on the outer wall of the foot 2 through screws 6, and a lug hole 5 is processed on the lug 4, and the screw passes through the lug hole 5 on the lug 4 to fix the base 1 on a high-pressure The back-to-back iron of the iron tower is to prevent the base 1 from sliding, and a top plate circular hole 7 is processed in the middle of the base top plate 3; the pulley frame 17 is composed of a pulley frame bottom plate 12, two identical pulley shaft plates 18, and a pulley 21. The bottom ends of the wheel axle plates 18 are vertically fixed on the pulley frame bottom plate 12 and stand opposite each other. A corresponding and identically shaped axle plate hole 23 is processed on each of the two pulley axle plates 18. The pulley axle 19 passes through and is horizontally mounted On the two shaft plate holes 23, a pulley shaft nut 22 is respectively installed on the outer side walls of the two pulley shaft plates 18 and the two ends of the pulley shaft 19, and the two pulley shaft nuts 22 fix the pulley shaft 19 on the two pulley shafts. On the plate 18, a rolling bearing 20 and two spacer sleeves 24 are set on the pulley shaft 19 between the two pulley shaft plates 18, and the two spacer sleeves 24 are installed at both ends of the rolling bearing 19 to prevent the rolling bearing 19 from swinging left and right. The pulley 21 is set on the rolling bearing 20; the bottom plate hole 13 identical to the top plate hole 7 is processed on the pulley frame bottom plate 12, and a plane bearing 15 is placed horizontally between the base top plate 3 and the pulley frame bottom plate 12, and the pulley frame rotating shaft 10 passes through base plate circular hole, plane bearing 15 and top plate circular hole 7 successively from top to bottom, is processed with external thread at the bottom of pulley frame rotating shaft 10, and the rotating shaft nut 8 that outer diameter is larger than top plate circular hole 7 diameters is screwed on The bottom end of the pulley frame rotating shaft 10, the rotating shaft nut latch 9 horizontally passes through the side wall of the rotating shaft nut 8 and the bottom end of the pulley frame rotating shaft 10, and the rotating shaft nut 8 and the pulley frame rotating shaft 10 are fixed together, and the bottom plate The pin 11 horizontally passes through the sidewall of the pulley frame bottom plate 12 and the top end of the pulley frame rotating shaft 10, and the pulley frame bottom plate 12 and the pulley frame rotating shaft 10 are fixed together. the

Respectively process a retaining block lug 26 at the top of two pulley shaft plates 18 outer sidewalls, the left end of " 冂 " shape retaining block 28 is hinged on the left retaining block lug 26 by hinge shaft 29, retaining The right end of line block 28 is movably installed on the line block lug 26 on the right side by block line block latch 27. the

In the middle of the bottom of the pulley frame bottom plate 12, a groove 16 is processed with an opening facing downwards and a plane bearing with a diameter greater than the diameter of the bottom plate hole 13, and in the middle of the top of the base top plate 3 is processed with an opening facing upwards and a diameter greater than the diameter of the top plate hole 7 diameters. The plane bearing lower groove 14, the plane bearing 15 is embedded between the plane bearing upper groove 16 of the pulley frame base plate 12 and the plane bearing lower groove 14 of the base top plate 3, preventing the plane bearing 15 from moving. the

The rolling bearing 20 is composed of two identical sub-rolling bearings 29 arranged side by side. . the

Claims (4)

1. a 500kV ground line bracket is towards the sky coaster, comprise the base that is constituted by four feets and base top board, it is characterized in that: four feets are stuck on the stool iron of high voltage iron tower in twos relatively, the journal stirrup of " L " shape respectively is installed on the lateral wall of relative and adjacent two feets, be processed with an earhole at journal stirrup, the earhole that screw passes on the journal stirrup is fixed on leaning against on the back iron of high voltage iron tower with base, to prevent that base from sliding, in the middle of the base top board, be processed with the top board circular hole; Pulley yoke is by the pulley yoke base plate, two identical pulley axillares, pulley constitutes, the bottom of two pulley axillares all is vertically fixed on the pulley yoke base plate and relative thirty years of age, on two pulley axillares, respectively be processed with a position correspondence, the axillare hole that shape is identical, pulley spindle pass and crossbearer on two axillare holes, lateral wall at two pulley axillares, the pulley spindle two ends respectively are equipped with a pulley spindle nut, two pulley spindle nuts are fixed on pulley spindle on two pulley axillares, pulley spindle between two pulley axillares is with rolling bearing and two spacer sleeves, two spacer sleeves are installed in the two ends of rolling bearing, and pulley sleeve is contained on the rolling bearing; Be processed with the base plate circular hole identical with the top board circular hole at the pulley yoke base plate, horizontal positioned has plane bearing between base top board and pulley yoke base plate, the pulley yoke rotation axis passes the base plate circular hole from the top down successively, plane bearing and top board circular hole, bottom at the pulley yoke rotation axis is processed with external screw thread, external diameter is spun on the bottom of pulley yoke rotation axis greater than the rotation axis nut of top board Circularhole diameter, rotation axis nut latch level is passed the bottom of sidewall and the pulley yoke rotation axis of rotation axis nut, rotation axis nut and pulley yoke rotation axis are fixed together, base plate pin level is passed the top of sidewall and the pulley yoke rotation axis of pulley yoke base plate, and pulley yoke base plate and pulley yoke rotation axis are fixed together.

2. 500kV according to claim 1 ground line bracket is towards the sky coaster, it is characterized in that: respectively be processed with a thread block journal stirrup on the top of two pulley axillare lateral walls, the left end of the thread block of " Jiong " shape is hinged on by hinge on the thread block journal stirrup on the left side, and the right-hand member of thread block is movably arranged on the thread block journal stirrup on the right by the thread block latch.

3. 500kV according to claim 1 and 2 ground line bracket is towards the sky coaster, it is characterized in that: in the middle of the bottom of pulley yoke base plate, be processed with opening down, diameter is greater than the plane bearing upper groove of base plate Circularhole diameter, the crown center of base top board be processed with opening up, diameter is greater than the plane bearing low groove of top board Circularhole diameter, plane bearing is embedded between the plane bearing low groove of the plane bearing upper groove of pulley yoke base plate and base top board.

4. 500kV according to claim 3 ground line bracket is towards the sky coaster, and it is characterized in that: rolling bearing is made of side by side two same sub-rolling bearings.

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