CN107069533A - A kind of super UHV Overhead Transmission Line tangent tower ground wire lifting tool - Google Patents

Abstract

A tool for lifting the ground wire of a straight line tower of an ultra-high voltage overhead transmission line, comprising a bracket, a receiving groove is provided on the top surface of the bracket, a nut is fixedly arranged in the receiving groove, a lead screw is fitted in the nut, and both ends of the lead screw protrude from the bracket, and the screw The upper part of the rod is equipped with a ratchet wrench, the lower end of the lead screw is connected to the hook through a bearing, and two parallel clamping grooves are set on the bottom surface of the bracket, and the side walls on both sides of each clamping groove are respectively fitted with the first bolt and the second bolt. A gasket is arranged at the end of the first screw rod, an extension tube is arranged outside the handle of the ratchet wrench, and a clamping bolt is installed on the side wall of one end of the extension tube. A connecting handle is installed at one end. This structure is closely connected with the ground wire, the ground wire is not easy to slip, and the safety of the operators can be guaranteed, and the method saves time and labor and has high efficiency, and the tools are relatively light, which is convenient for personnel to operate and transfer up and down.

Description

A tool for lifting the ground wire of the straight tower of the ultra-high voltage overhead transmission line

technical field

The invention relates to the technical field of maintenance of overhead ground wires, in particular to a lifting tool for straight tower ground wires of ultra-high voltage overhead transmission lines.

Background technique

EHV/UHV transmission lines are the backbone grid of my country's power grid. During long-term operation, fittings are often affected by external forces such as lightning strikes, pollution, bird damage, high humidity, and temperature differences. At the same time, they must bear mechanical stresses such as long-term heavy loads and wind dancing Therefore, under the action of various stresses such as long-term heavy loads and strong stresses, problems such as clamp damage, loose clamps, and self-explosion of discharge gap insulators have gradually increased, bringing great safety hazards to the safe operation of power grid equipment. If it is dealt with in time, the vicious accident of the transmission line is bound to happen. In the maintenance of overhead ground wires, the range of movement on the ground wire support is small, and often only 1-2 people can be accommodated for maintenance work, and the structure of the ground wire support is simple, and it is difficult to select the stress point. The tower height of UHV line tower is relatively high. If the maintenance work is performed on the ground wire support, the influence of wind force cannot be ignored. The main lifting method used for the ground wire of existing transmission lines is the lever hoist method, but the connection between the lever hoist and the ground wire is not tight, it is easy to slip, the safety of the operators cannot be guaranteed, and this method is time-consuming, laborious, and inefficient. The tool is relatively heavy, which is not conducive to personnel operation and transfer up and down.

Contents of the invention

In order to solve the above problems, the object of the present invention is to provide a lifting tool for the straight tower ground wire of the ultra-high voltage overhead transmission line that can improve work efficiency, reduce operation risk, and is portable and easy to carry.

In order to achieve the above object, the present invention is achieved through the following technical solutions: a tool for lifting the ground wire of a straight line tower of an ultra-high voltage overhead transmission line, including a bracket, the top surface of the bracket is provided with a receiving groove, and a nut is fixedly arranged in the receiving groove, and a wire is arranged in the nut. Both ends of the lead screw protrude from the bracket. A ratchet wrench is installed on the upper part of the lead screw. The lower end of the lead screw is connected to the hook through a bearing. Two parallel clamping grooves are set on the bottom surface of the bracket. The side walls are matched with the first bolt and the second bolt respectively, the end of the first screw rod is provided with a gasket, the handle of the ratchet wrench is provided with an extension tube, and the side wall at one end of the extension tube is equipped with a clamping bolt, and the end of the clamping bolt is The end of the extension tube is in contact with the handle of the ratchet wrench, and the other end of the extension tube is installed with a connecting handle.

In order to further realize the purpose of the present invention, the following technical solutions can also be adopted: handles and mounting bases are set on the bracket, mounting grooves are provided in the mounting bases, supporting plates are arranged in the mounting grooves, and the mounting plate is installed between the supporting plate and the bottom wall of the mounting grooves. The second spring, the lower end of the handle is connected to the mounting plate through the connecting column, the diameter of the connecting column is smaller than the width of the mounting plate, the mounting plate is located in the mounting groove, at least two fixing grooves are opened on the mounting seat, and at least two L-shaped One end of the fixed rod, the fixed rod is located in the corresponding fixed groove, the other end of the fixed rod is connected to the first rack, and the first bevel gear and the second bevel gear meshing with each other are installed in the fixed groove, and the first bevel gear is installed on the first bevel gear. gear, the first rack meshes with the first gear, and the wheel shaft is installed on the first bevel gear, and one end of the wheel shaft protrudes from the mounting seat and a baffle is installed, and a return spring is installed between the baffle and the mounting seat, and pushing the wheel shaft can make the first umbrella The gear is separated from the second bevel gear, the second gear is installed on the second bevel gear, the second gear is meshed with the second rack, the mounting seat is provided with a chute, the chute communicates with the mounting groove, and the chute is located between the handle and the mounting plate , a limit plate is set in the chute, and a guide rod with a square cross-section is installed on the limit plate. The limit plate touches the second rack, and a vertical plate is installed on the guide rod. Three springs, the second rack can push the limit plate to move along the guide rod into the installation groove. Several guide holes are provided on the supporting plate, and several guiding columns are installed on the bottom wall of the installation groove. The guiding columns are located in the guiding holes, and the supporting plate can slide along the guiding columns through the guiding holes.

The advantage of the present invention is that: when the present invention is used, the operator first carries tools to the ground wire support, and places the support on the back-to-back angle irons of the ground wire hardware hanging points, so that the angle irons are respectively located in the two clamping grooves, and Make the angle iron between the first bolt and the second bolt, and then rotate the first bolt and the second bolt to clamp the angle iron, so that the bracket is fixed on the back-to-back angle iron at the hanging point of the ground wire hardware, which is firmly fixed and can be effectively Reduce the operating risk of the operator and improve work efficiency. When using, tie one end of the insulating sling to the ground wire and hang the other end on the hook. Turn the ratchet wrench to make the lead screw drive the hook up and lift the ground wire to a suitable position. , transfer the vertical load of the ground wire from the ground wire clamp to the hook, and stop lifting when the ground wire is lifted to a suitable position for installation. This structure is closely connected with the ground wire, and the ground wire is not easy to slip, so that the operators can safely It is guaranteed, and the method saves time and labor and has high efficiency, and the tool is relatively light, which is convenient for personnel to operate and transfer up and down. The insulating sling has sufficient mechanical strength and insulation performance, and can be used for different maintenance work when the power is off or live. In addition, it can effectively avoid direct contact between the hook and the ground wire when the wire is lifted, and prevent frictional damage to the ground wire.

Description of drawings

Fig. 1 is a schematic view of the structure of the present invention; Fig. 2 is an enlarged view of A direction of Fig. 1; Fig. 3 is another kind of another state diagram of Fig. 2; Fig. 4 is a sectional view along the B-B line of Fig. 2; Fig. 5 is a sectional view along Fig. 3 C-C line sectional view.

detailed description

A tool for lifting the ground wire of a straight line tower of an ultra-high voltage overhead transmission line, comprising a bracket 1, a receiving groove 2 is formed on the top surface of the bracket 1, a nut 3 is fixed in the receiving groove 2, a screw 4 is arranged in the nut 3, and the screw 4 is arranged Both ends protrude from the bracket 1, the upper part of the screw 4 is equipped with a ratchet wrench 5, the lower end of the screw 4 is connected to the hook 7 through the bearing 6, and the bottom surface of the bracket 1 is provided with two parallel clamping grooves 8, each clamping groove The sidewalls on both sides of 8 cooperate with the installation of the first bolt 9 and the second bolt 10 respectively, the end of the first screw rod 9 is provided with a gasket 11, and the handle of the ratchet wrench 5 is provided with an extension tube 12 outside the handle. Cooperate with the installation of the clamping bolt 14 , the end of the clamping bolt 14 is in contact with the handle of the ratchet wrench 5 , and the other end of the extension tube 12 is installed with a connecting handle 13 . Connect an end of the insulating suspender on the suspension hook 7. When in use, the operator first carries tools to the ground wire bracket, and places the bracket 1 on the back-to-back angle irons of the ground wire hardware hanging points, so that the angle irons are respectively located in the two clamping grooves 8, and the angle irons are located in the first Between the bolt 9 and the second bolt 10, then rotate the first bolt 9 and the second bolt 10 to clamp the angle iron, so that the bracket 1 is fixed on the back-to-back angle iron at the hanging point of the ground wire hardware, which is firmly fixed and can effectively reduce the The operation risk of the operator is improved, and the work efficiency is improved. When using, one end of the insulating sling is tied to the ground wire, and the other end is hung on the hook 7. Turning the ratchet wrench 5 can make the lead screw 4 drive the hook 7 to rise and lift the ground wire. When it reaches a suitable position, transfer the vertical load of the ground wire from the ground wire clamp to the hook 7, and stop lifting when the ground wire is lifted to a suitable position for installation. This structure is closely connected with the ground wire, and the ground wire is not easy to slip. The safety of operating personnel can be guaranteed, and the method saves time and labor and has high efficiency, and the tools are relatively light, which is convenient for personnel to operate and transfer up and down. The insulated sling has sufficient mechanical strength and insulation performance, and can be used for different maintenance work between power outages and electrification. In addition, it can effectively avoid direct contact between the hook 7 and the ground wire when the wire is lifted, and prevent frictional damage to the ground wire.

Described support 1 is provided with handle 15 and mounting seat 16, offers mounting groove 32 in mounting seat 16, and supporting plate 39 is set in mounting groove 32, second spring 42 is installed between supporting plate 39 and mounting groove 32 bottom walls, handle The lower end of 15 is connected to mounting plate 40 by connecting column 41, and connecting column 41 diameter is less than the width of mounting plate 40, and mounting plate 40 is positioned at mounting groove 32, offers at least two fixing grooves 22 on mounting seat 16, and at least One end of two L-shaped fixed rods 30, the fixed rods 30 are located in the corresponding fixed grooves 22, the other end of the fixed rods 30 is connected to the first rack 25, and the first bevel gear 24 and the first bevel gear 24 meshing with each other are installed in the fixed grooves 22. Two bevel gears 43, the first gear 26 is installed on the first bevel gear 24, the first rack 25 meshes with the first gear 26, the wheel shaft 21 is installed on the first bevel gear 24, and one end of the wheel shaft 21 stretches out from the mounting seat 16 and is installed Baffle plate 33, back-moving spring 34 is installed between baffle plate 33 and mounting seat 16, promotes axle 21 and can make first bevel gear 24 break away from second bevel gear 43, second gear 23 is installed on the second bevel gear 43, second gear Engage the second tooth bar 27 on 23, offer chute 44 on the mounting seat 16, chute 44 communicates with mounting groove 32, chute 44 is positioned between handle 15 and mounting plate 40, and limit plate 28 is set in chute 44, Cooperate and install the guide bar 35 that cross section is square on the limit plate 28, the limit plate 28 contacts with the second rack 27, vertical plate 31 is installed on the guide bar 35, the third is installed between the limit plate 28 and the vertical plate 31. The spring 29 and the second rack 27 can push the limiting plate 28 to move along the guide rod 35 into the installation groove 32 . This structure enables the handle 15 to be easily disassembled and connected to the bracket 1 through the mounting seat 16 . When installing the handle 15, put the mounting plate 40 into the mounting groove 32 and push the supporting plate 39, so that the fixed rod 30 drives the first rack 25 to move downward, and the first bevel gear 24 drives the second bevel gear through the first gear 26. The gear 43 rotates, and the second gear 23 rotates with the second bevel gear 43, so that the second rack 27 overcomes the elastic force of the third spring 29, pushes the limiting plate 28 out of the chute 44, and makes it on the mounting plate 40 , because the limiting plate 28 is located on the guide rod 35 with a square cross section, the limiting plate 28 cannot rotate, and the limiting plate 28 clamps the mounting plate 40 in the mounting groove 32, so that the handle 15 is conveniently fixed on the mounting seat 16 When disassembling the handle 15, push the wheel shaft 21 so that the first bevel gear 24 is separated from the second bevel gear 43, so that the limit plate 28 returns to the chute 44 under the elastic force of the third spring 29, so that the mounting plate 40 can be Disengaging from the mounting groove 32 facilitates the removal of the handle 15 from the mounting base 16 . After disengagement, the wheel shaft 21 is pulled back to the original position, so that the first bevel gear 24 meshes with the second bevel gear 43 . One end of wheel shaft 21 stretches out mounting seat 16 and installs baffle plate 33, and back-moving spring 34 is installed between baffle plate 33 and mounting seat 16, and back-moving spring 34 gives the power that first bevel gear 24 moves to second bevel gear 43 all the time, avoids When the bevel gear rotates, the first bevel gear 24 is separated from the second bevel gear 43 .

Several guide holes 37 are offered on the supporting plate 39 , and several guide posts 36 are installed on the bottom wall of the mounting groove 32 , the guide posts 36 are located in the guide holes 37 , and the supporting plate 39 can slide along the guide posts 36 through the guide holes 37 . This structure can serve as a guide for the supporting plate 39 and prevent the service life of the second spring 42 from being reduced due to deflection during the moving process of the supporting plate 39 .

The technical solutions of the present invention are not limited within the scope of the embodiments described in the present invention. The technical contents not described in detail in the present invention are all known technologies.

Claims (3)

1. A tool for lifting the ground wire of a straight tower of an ultra-high voltage overhead transmission line, characterized in that it includes a bracket (1), the top surface of the bracket (1) is provided with an accommodation groove (2), and a nut is fixed inside the accommodation groove (2) ( 3), the screw (4) is set inside the nut (3), both ends of the screw (4) protrude from the bracket (1), the upper part of the screw (4) is installed with a ratchet wrench (5), the screw (4) ) is connected to the hook (7) through the bearing (6), and two parallel clamping grooves (8) are provided on the bottom surface of the bracket (1). A bolt (9) and a second bolt (10), a washer (11) is set at the end of the first screw (9), an extension tube (12) is set outside the handle of the ratchet wrench (5), and the extension tube (12) A clamping bolt (14) is installed on the side wall of one end, and the end of the clamping bolt (14) touches the handle of the ratchet wrench (5), and the other end of the extension pipe (12) is equipped with a connecting handle (13). 2. A lifting tool for the ground wire of a straight tower of an ultra-high voltage overhead transmission line according to claim 1, characterized in that: the bracket (1) is provided with a handle (15) and a mounting seat (16), and the mounting seat (16) offers mounting groove (32) in, and supporting plate (39) is set in mounting groove (32), second spring (42) is installed between supporting plate (39) and the bottom wall of mounting groove (32), handle (15 ) is connected to the mounting plate (40) through the connecting column (41), the diameter of the connecting column (41) is smaller than the width of the mounting plate (40), the mounting plate (40) is located in the mounting groove (32), and the mounting base (16) At least two fixing grooves (22) are provided, and one end of at least two L-shaped fixing rods (30) is installed on the supporting plate (39), the fixing rods (30) are located in the corresponding fixing grooves (22), and the fixing rods (30 ) is connected to the first rack (25), the first bevel gear (24) and the second bevel gear (43) meshing with each other are installed in the fixed groove (22), and the first bevel gear (24) is installed on the first Gear (26), the first tooth bar (25) meshes with the first gear (26), the wheel shaft (21) is installed on the first bevel gear (24), and one end of the wheel shaft (21) stretches out from the mounting seat (16) and installs The baffle plate (33), the return spring (34) is installed between the baffle plate (33) and the mounting seat (16), and pushing the axle (21) can make the first bevel gear (24) break away from the second bevel gear (43), the second The second gear (23) is installed on the second bevel gear (43), the second tooth bar (27) is meshed on the second gear (23), and the chute (44) is offered on the mounting seat (16), and the chute (44) and The installation grooves (32) communicate with each other, the chute (44) is located between the handle (15) and the installation plate (40), the limit plate (28) is set in the chute (44), and the limit plate (28) matches the installation section Be a square guide rod (35), the limit plate (28) contacts with the second tooth bar (27), the vertical plate (31) is installed on the guide rod (35), the limit plate (28) and the vertical plate (31 ) is installed between the third spring (29), the second rack (27) can push the limit plate (28) to move along the guide rod (35) into the installation groove (32). 3. A lifting tool for the ground wire of a straight tower of an ultra-high voltage overhead transmission line according to claim 2, characterized in that: several guide holes (37) are provided on the supporting plate (39), and the installation groove (32 ) several guide columns (36) are installed on the bottom wall, the guide columns (36) are located in the guide holes (37), and the supporting plate (39) can slide along the guide columns (36) through the guide holes (37).