CN205544120U - Transmission line is adjustable stroke yoke plate for strain insulator - Google Patents

Abstract

The utility model discloses a low in labor strength, adjust the time section, ability live working's transmission line is adjustable stroke yoke plate for strain insulator, the technical scheme who adopts does: a transmission line is adjustable stroke yoke plate for strain insulator, worm wheel formula lead screw body interlude sets up at the adjustable stroke yoke plate originally internally, and worm ontology matching sets up on worm wheel formula lead screw body, through this trunk circling of rotatory worm body drive worm formula lead screw, the slide block body activity sets up on worm wheel formula lead screw body, along with the rotation of worm wheel formula lead screw body at relative worm wheel formula lead screw body axial displacement, worm gear box lid body passes through soket head cap screw and sets up on adjustable stroke yoke plate body for it is originally internal at the adjustable stroke yoke plate with the encapsulation of worm wheel formula lead screw body, the utility model discloses but wide application in electric power system field.

Description

An adjustable stroke connecting plate for tension resistance of transmission lines

technical field

The utility model relates to an adjustable stroke connecting plate for tension resistance of transmission lines, which belongs to the technical field of electric power systems.

Background technique

The inclination of the power line tower caused by the mining affected area and the poor geological area will cause excessive tension of the ground wire of the tension tower. The tension of the ground wire must be released in time, that is, the length of the ground wire must be adjusted to ensure the safe operation of the line. If the release is not timely, it may cause accidents such as tower collapse and disconnection, so the adjustment workload is heavy and frequent.

When the line runs for a long time, the twisting, whipping, and sag increase of the phase-split conductors caused by the long-term operation of the line will affect the safe operation of the line, and the length of the wire must be adjusted in time to restore the best operating state of the line.

At present, the DB type adjustment plate is used most, and the length adjustment is realized by adjusting different hole distances. When adjusting the hole distance of the DB-type adjusting plate, it is necessary to use a lifting tool to retract the tension of the wire first (the regulations stipulate that the length of the wire over-drawing should not exceed 200mm, and some wire tensions have reached the limit state during actual operation and cannot be adjusted), and remove the connecting bolts , re-installed in the new connection hole, the wire length (sag) can be adjusted. The adjustment time is long, the labor intensity is high, and it is not suitable for live work.

Utility model content

The utility model overcomes the deficiencies in the prior art, and provides an adjustable travel connecting plate for tension resistance of transmission lines with low labor intensity, short adjustment time and live working.

In order to solve the above technical problems, the technical solution adopted by the utility model is: an adjustable stroke connecting plate for tension resistance of transmission lines, including an adjustable stroke connecting plate body, a worm wheel screw body, a worm body, a slider body, a worm gear Worm case cover body and hexagon socket screws;

The worm wheel type screw body is interspersed in the adjustable stroke connecting plate body, the worm body is matched and arranged on the worm wheel type screw body, and the worm wheel type screw body is driven to rotate by rotating the worm body, and the slider body is movably arranged on the On the worm gear screw body, it moves axially relative to the worm gear screw body with the rotation of the worm gear screw body. Encapsulate the worm gear type lead screw body in the adjustable stroke connecting plate body;

The structure of the adjustable stroke connecting plate body is: including a positioning platform, a first bushing, a chute, a guide rail, a first connecting hole, a second bushing, an internal thread, a scale and a scale mark, and a worm gear box. The first connecting hole is set on one side of the body of the adjustable stroke link plate, and the middle part of the body of the adjustable stroke link plate is provided with a through hole narrow at both ends and wide in the middle, and the positioning platform is set at the top of the through hole. The first bushing is arranged on the upper part of the through hole, the second bushing is arranged on the lower part of the through hole, the chute is arranged in the middle of the through hole, the guide rail is arranged on one side of the chute, and the scale and The scale mark is set on the other side of the chute, the worm gear box is set in the positioning platform, and the internal thread is located on the top of the adjustable stroke connecting plate body, which is used for inserting hexagon socket head cap screws;

The worm wheel type lead screw body is movably arranged in the middle through hole of the adjustable stroke connecting plate body. The structure of the worm wheel type lead screw body is: including a worm wheel bushing, a worm wheel, a lead screw positioning platform, a lead screw trapezoidal thread, Screw shaft, nut, screw thread and cotter pin, the top of the screw shaft is provided with a worm gear, and the worm gear sleeve is arranged outside the worm gear to protect the worm gear, and the screw positioning platform is arranged on the worm gear sleeve, For the installation and positioning of the screw shaft, the middle part of the screw shaft is provided with a trapezoidal screw thread, and the trapezoidal thread of the screw shaft is used to cover the slider body, the lower part of the screw shaft is provided with a thread, and the nut passes through The screw thread fixes the screw shaft on the body of the adjustable stroke connecting plate, and the cotter pin is inserted at the bottom of the screw shaft to prevent the nut from slipping off;

The slider body is movably arranged on the screw shaft through the trapezoidal thread of the lead screw. The structure of the slider body is: including a guide rail stopper, a second connecting hole and a slider trapezoidal thread, and the guide rail stopper is located on the slider One side of the body is used to locate the slider body, the trapezoidal thread of the slider is located on the other side of the slider body, the second connection hole is used for passing through the wire, the trapezoidal thread of the slider and the trapezoidal thread of the lead screw match.

The worm body is matched with the worm gear, and the structure of the worm body is as follows: it includes a hexagonal head of the worm shaft, and the hexagonal head of the worm shaft is arranged on the end surface of the worm body for rotating the worm body.

The worm gear and worm case cover body is arranged on the top of the adjustable travel connecting plate body, and the structure of the worm gear and worm case cover body is: including a top shaft and a screw hole, and the top shaft is located at the bottom of the worm gear and worm case cover body The end matches the groove provided on the worm gear sleeve and is used to compress the worm gear sleeve. The screw holes are located on both sides of the top shaft and are through holes for inserting hexagon socket screws.

Compared with the prior art, the utility model has the beneficial effects that: the utility model solves the safety technical problems such as high labor intensity, long working hours, and many safety precautions when using the lifting tool to retract the wire tension. The lever bolt can be easily adjusted, and the live working is very convenient. The adjustment work is simple and convenient. It can avoid the risk of operation safety caused by disconnection caused by over-traction and heavy adjustment workload. At the same time, the utility model has the advantages of simple structure, simple processing, manufacturing and on-site operation, strong versatility, high safety factor, and can realize all functions of the DB-type adjusting plate, and is safe, reliable, energy-saving, environment-friendly and efficient. The utility model is connected in series in the connection fittings of the insulator string (it can also be used for the connection of overhead ground wires) to adjust the stroke of the slider to realize the adjustment of the length and sag of the wires (including single wires and split wires). The utility model can realize all the functions of the DB-type adjusting plate, and the adjustment efficiency, labor intensity and operation risk are all superior to the DB-type adjusting plate, especially the live adjustment can be realized very conveniently, and the risk caused by untimely adjustment can be avoided, but Without changing the original safety protection measures of the wire, its connection with the wire can be realized through parallel hanging plates and other shaped connection fittings. The cross-section of the adjustable stroke connecting plate of the power line described in the utility model adopts a polygonal design, especially the bottom cross-section of the guide rail adopts a trapezoidal design, which increases its cross-sectional resistance moment and improves the safety connection coefficient. The utility model adopts a worm gear and worm structure, which can conveniently realize the self-locking function while realizing labor-saving adjustment. At the same time, it can be used together with the self-locking function of the trapezoidal thread to ensure that the sag (length) of the line wire runs safely within the adjusted range for a long time. , energy saving and environmental protection, in line with the requirements of the characteristics of energy-saving fittings.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is described further.

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a structural schematic diagram of the body of the adjustable stroke connecting plate in the utility model.

Fig. 3 is a schematic structural view of the worm gear screw body in the present invention.

Fig. 4 is a schematic structural view of the worm body in the present invention.

Fig. 5 is a schematic structural diagram of the slider body in the present invention.

Fig. 6 is a schematic structural view of the worm gear box cover body in the present invention.

In the figure: 1 is the body of the adjustable stroke connecting plate, 11 is the positioning platform, 12 is the first bushing, 13 is the chute, 14 is the guide rail, 15 is the first connecting hole, 16 is the second bushing, 17 is the inner thread, 18 is the scale and scale mark, 19 is the worm gear box, 2 is the worm gear screw body, 21 is the worm gear sleeve, 22 is the worm wheel, 23 is the screw positioning platform, 24 is the lead screw trapezoidal thread, 25 is Screw shaft, 26 is a nut, 27 is a thread, 28 is a cotter pin, 3 is a worm body, 31 is an inner hexagonal head of a worm shaft, 4 is a slider body, 41 is a guide rail block, 42 is a second connecting hole, 43 5 is the trapezoidal thread of the slider, 5 is the body of the worm gear box cover, 51 is the top shaft, 52 is the screw hole, and 6 is the hexagon socket head cap screw.

detailed description

As shown in Figures 1 to 6, the utility model is an adjustable stroke connecting plate for tension resistance of transmission lines, including an adjustable stroke connecting plate body 1, a worm wheel screw body 2, a worm body 3, a slider body 4, Worm gear case cover body 5 and hexagon socket head cap screws 6;

The worm wheel type screw body 2 is interspersed in the adjustable stroke connecting plate body 1, the worm body 3 is matched and arranged on the worm wheel type screw body 2, and the worm wheel type screw body 2 is driven to rotate by rotating the worm body 3, the described The slider body 4 is movably arranged on the worm-gear screw body 2, and moves axially relative to the worm-gear screw body 2 as the worm-gear screw body 2 rotates. It is arranged on the adjustable stroke connecting plate body 1, and is used to package the worm gear screw body 2 in the adjustable stroke connecting plate body 1;

The structure of the adjustable stroke connecting plate body 1 is: including a positioning table 11, a first bushing 12, a chute 13, a guide rail 14, a first connecting hole 15, a second bushing 16, an internal thread 17, a scale and a scale Mark 18 and worm gear box 19, the first connection hole 15 is set on one side of the adjustable stroke connecting plate body 1, and the middle part of the adjustable stroke connecting plate body 1 is provided with a through hole narrow at both ends and wide in the middle, The positioning platform 11 is arranged on the top of the through hole, the first bushing 12 is arranged on the upper part of the through hole, the second bushing 16 is arranged on the lower part of the through hole, and the chute 13 is arranged on the upper part of the through hole. In the middle, the guide rail 14 is arranged on one side of the chute 13, the scale and the scale mark 18 are arranged on the other side of the chute 13, the worm gear box 19 is arranged in the positioning table 11, and the internal thread 17 is located at the top of the adjustable stroke connecting plate body 1, and is used for inserting the hexagon socket head cap screw 6;

The worm wheel type lead screw body 2 is movably arranged in the middle through hole of the adjustable stroke connecting plate body 1, and the structure of the worm wheel type lead screw body 2 is: including a worm wheel bushing 21, a worm wheel 22, and a lead screw positioning platform 23 , leading screw trapezoidal thread 24, leading screw shaft 25, nut 26, thread 27 and cotter pin 28, the top of described leading screw shaft 25 is provided with worm wheel 22, and described worm wheel bushing 21 is arranged on the outside of worm wheel 22, is used for protecting Worm wheel 22, described lead screw positioning platform 23 is arranged on the worm gear bushing 21, is used for the installation and positioning of lead screw shaft 25, and the middle part of described lead screw shaft 25 is provided with lead screw trapezoidal thread 24, and described lead screw trapezoidal thread 24 is used to cover the slider body 4, the lower part of the screw shaft 25 is provided with a thread 27, and the nut 26 fixes the screw shaft 25 on the adjustable travel connecting plate body 1 through the thread 27, and the cotter pin 28 is inserted It is mounted on the bottom of the screw shaft 25 to prevent the nut 26 from slipping off;

The slider body 4 is movably arranged on the screw shaft 25 through the lead screw trapezoidal thread 24, and the structure of the slider body 4 is: comprising a guide rail stopper 41, a second connecting hole 42 and a slider trapezoidal thread 43. The guide rail block 41 is located on one side of the slider body 4 for positioning the slider body 4, the slider trapezoidal thread 43 is located on the other side of the slider body 4, and the second connecting hole 42 is used for connecting wire, the trapezoidal thread 43 of the slider matches the trapezoidal thread 24 of the lead screw.

The worm body 3 is matched with the worm wheel 22, and the structure of the worm body 3 is as follows: comprising a worm shaft inner hexagon head 31, and the worm shaft inner hexagon head 31 is arranged on the end face of the worm body 3 for rotating the worm body 3.

The worm gear and worm case cover body 5 is arranged on the top of the adjustable stroke connecting plate body 1, and the structure of the worm gear and worm case cover body 5 is: including a top shaft 51 and a screw hole 52, and the top shaft 51 is located on the worm wheel The bottom end of the worm case cover body 5 is matched with the groove provided on the worm gear sleeve 21 for pressing the worm gear sleeve 21. The screw holes 52 are located on both sides of the top shaft 51 and are through holes for Insert the hexagon socket head cap screw 6.

The utility model is aimed at power line pole towers located in mining-influenced areas and poor geological areas. After mining changes and underground mineral mining goaf, before the surface mobile basin stops deforming, that is, before the goaf area tends to be stable, the protection of power pole towers must be strengthened. Inspection and monitoring, when it is found that the tension of the ground wire of the tension pole tower is close to or exceeds the value specified in the "Regulations", it is necessary to climb the tower and adjust the bolt connection hole of the DB-type adjustment plate to release the non-design load tension on the wire to ensure that the line safe operation. Since the inclination of the power line towers in the active area changes frequently, corresponding frequent power outages are required to adjust the tension of the ground wires when climbing the towers; Adjustment. As a result, the line is repeatedly out of service, which affects the reliable operation of the power grid. In order to avoid disconnection caused by untimely adjustment and the waste of manpower and material resources and operation safety risks caused by heavy adjustment workload, reduce power failure losses. A utility model of a power line adjustable travel connecting plate, which can realize the adjustment of live work (equipotential work and ground potential work). Due to the use of worm gear structure, the adjustment work is simple, labor-saving, convenient and convenient, which greatly reduces the work of the operator. The labor intensity and working time are high, and the safety factor is high, which reduces the operation risk and improves the reliability of power supply.

The utility model is based on the adjustment amount calculation formula:

In the formula:

After the wire sag adjustment is calculated according to the above formula, the required adjustment length of the wire can be easily realized by rotating the inner hex head of the worm shaft according to the size scale mark set on the adjustment plate body.

When the utility model is in use, the utility model replaces the DB-type adjusting plate and is installed on the original position of the DB-type adjusting plate. The first connecting hole 15 and the second connecting hole 42 are connected to the connecting tower fittings and wires through parallel hanging plates. connection, the overall connection length is consistent with the design length. When the length of the wire needs to be adjusted when the tower is tilted, the wire sag changes, or the phase-split wire is twisted or whipped, according to the adjustment amount ΔL calculated on site and compared with the scale and the scale mark 18, the live working method is used to drive the wrench to rotate through the operating rod The inner hexagonal head 31 of the worm shaft drives the worm wheel screw type rod body 2 to start the slider body 4 to directly move ΔL on the guide rail 14, so that the wire sag (length) adjustment can be easily realized.

The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings, but the present utility model is not limited to the above-mentioned embodiments. Make various changes below.

Claims (3)

1. An adjustable stroke connecting plate for tension resistance of transmission lines, characterized in that it includes an adjustable stroke connecting plate body (1), a worm wheel screw body (2), a worm body (3), a slider body (4 ), worm gear box cover body (5) and hexagon socket head cap screws (6); The worm wheel type screw body (2) is interspersed in the adjustable stroke connecting plate body (1), and the worm body (3) is matched with the worm wheel type screw body (2), driven by rotating the worm body (3) The worm wheel screw body (2) rotates, and the slider body (4) is movably arranged on the worm wheel screw body (2). 2) Axial movement, the worm gear and worm box cover body (5) is set on the adjustable stroke connecting plate body (1) through the hexagon socket head cap screw (6), which is used to encapsulate the worm gear screw body (2) in the Inside the adjustable stroke connecting plate body (1); The structure of the adjustable stroke connecting plate body (1) is: including a positioning platform (11), a first bushing (12), a chute (13), a guide rail (14), a first connecting hole (15), a second Two shaft sleeves (16), internal thread (17), scale and scale mark (18) and worm gear box (19), the first connecting hole (15) is set on the body of the adjustable stroke connecting plate (1) On one side, the middle part of the adjustable travel connecting plate body (1) is provided with a through hole with narrow ends and a wide middle, the positioning platform (11) is arranged at the top of the through hole, and the first bushing (12) is arranged On the upper part of the through hole, the second bushing (16) is arranged at the lower part of the through hole, the chute (13) is arranged in the middle of the through hole, and the guide rail (14) is arranged at the center of the chute (13) On one side, the scale and scale marks (18) are set on the other side of the chute (13), the worm gear box (19) is set in the positioning table (11), and the internal thread (17) is located The top of the adjustable stroke connecting plate body (1) is used for inserting the hexagon socket head cap screw (6); The worm wheel type screw body (2) is movably arranged in the middle through hole of the adjustable stroke connecting plate body (1). Worm wheel (22), lead screw positioning platform (23), lead screw trapezoidal thread (24), lead screw shaft (25), nut (26), thread (27) and cotter pin (28), said lead screw shaft ( The top of 25) is provided with a worm gear (22), the worm gear sleeve (21) is set outside the worm gear (22) to protect the worm gear (22), and the screw positioning platform (23) is set on the worm gear sleeve ( 21), used for the installation and positioning of the screw shaft (25), the middle part of the screw shaft (25) is provided with a screw trapezoidal thread (24), and the screw trapezoidal thread (24) is used to set the slider The main body (4), the lower part of the screw shaft (25) is provided with a thread (27), and the nut (26) fixes the screw shaft (25) to the body of the adjustable stroke connecting plate (1) through the thread (27) , the cotter pin (28) is inserted at the bottom of the screw shaft (25) to prevent the nut (26) from slipping; The slider body (4) is movably arranged on the screw shaft (25) through the lead screw trapezoidal thread (24). hole (42) and slider trapezoidal thread (43), the guide rail stopper (41) is located on one side of the slider body (4) for positioning the slider body (4), and the slider trapezoidal thread (43 ) is located on the other side of the slider body (4), the second connection hole (42) is used for threading wires, and the trapezoidal thread (43) of the slider matches the trapezoidal thread (24) of the lead screw. 2. An adjustable stroke connecting plate for transmission line tension according to claim 1, characterized in that the worm body (3) matches the worm wheel (22), and the structure of the worm body (3) It is: comprising a worm shaft inner hexagonal head (31), the worm shaft inner hexagonal head (31) is arranged on the end surface of the worm body (3) for rotating the worm body (3). 3. An adjustable stroke connecting plate for tension resistance of power transmission lines according to claim 1, characterized in that, the worm gear box cover body (5) is arranged on the top end of the adjustable stroke connecting plate body (1) , the structure of the worm gear and worm case cover body (5) is: including a top shaft (51) and a screw hole (52), the top shaft (51) is located at the bottom of the worm gear and worm case cover body (5), and The groove provided on the worm gear bushing (21) matches and is used for pressing the worm gear bushing (21). The screw holes (52) are located on both sides of the top shaft (51) and are through holes for insertion Socket cap screws (6).