CN204205402U - UHVDC Transmission Lines changes tangent tower wire clamp tool - Google Patents

Abstract

The utility model discloses a line clamp tool for replacing a straight line tower of an UHV DC line, which comprises a cross-arm side connecting fitting, an insulating pull rod, a mechanical lead screw, and a dual-purpose wire lifting card. One end of the rod is connected, and the mechanical screw includes a screw shaft, an inner sleeve, and an outer sleeve, and the three are sequentially fitted from the inside to the outside, and the two of the three are connected by threads, and the outer end of the screw shaft is connected to The other end of the insulating pull rod is connected, the outer end of the outer sleeve is connected to the dual-purpose cable clamp through the end joint, the outer end of the inner sleeve is provided with a ratchet, and the outer sleeve of the ratchet is equipped with a rotating sleeve and ratchets. Connected at one end, the utility model simplifies the operation tool, greatly reduces the size and weight of the wire lifting tool, and achieves the purpose of replacing the hanging wire clamp, and the wire lifting hook is designed as a dual-purpose type, no need to replace clamps during operation, and multiple wires can be completed at one time The replacement of wire clamps improves work efficiency.

Description

UHV DC Line Replacement Straight Tower Wire Clamp Tool

Technical field:

The utility model relates to a tool for replacing line clamps of straight towers, in particular to a tool for replacing line clamps of straight line towers for UHV DC lines. the

Background technique:

After the Hami South-Zhengzhou ±800kV Tianzhong Line DC project is put into operation, the transmission load will account for about one-fifth of the load of Henan Power Grid, which will effectively relieve the power supply pressure of Henan Power Grid and Central China Power Grid. The unplanned outage of the project will cause huge economic losses, pose a great threat to the stable operation of the power grid, and even affect the safe and stable operation of the entire power grid. important means.

The working problems of replacing clamps on the ±800kV line are mainly manifested in the following aspects: (1) The tower span of the ±800kV sky-central line DC transmission project is relatively large, and the wire diameter is relatively large, so the vertical span is also large, and the overall weight of the conductor is heavy , the conventional operation method of lifting conductors is more difficult; (2) The insulators of ±800kV DC transmission lines are longer in length, the cross-sectional area of conductors is larger, and the required working tools are long, large and heavy. Its own weight is too large and the difficulty of operation has also become a problem, which affects the operation of the operator.

Utility model content:

The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art, to provide a UHV DC cable with simple structure, convenient installation, and the ability to replace multiple sub-conductor clips at one time without changing the fixture. Line Replacement Straight Tower Wire Clamp Tool.

The technical scheme of the utility model is: a UHV DC line replacement linear tower line clamp tool, including cross-arm side connection fittings, insulating pull rods, mechanical screw, dual-purpose wire lifting card, wherein: the cross-arm side connection The metal tool is connected to one end of the insulating pull rod through an adapter. The mechanical lead screw includes a screw shaft, an inner sleeve and an outer sleeve. The outer end of the silk shaft is connected to the other end of the insulating pull rod through the end joint, the outer end of the outer sleeve is connected to the dual-purpose wire lifting card through the end joint, and the outer end of the inner sleeve is provided with The ratchet wheel is provided with a rotating sleeve and ratchet teeth, and the rotating sleeve is connected with one end of the handle.

The ratchet is a two-way ratchet, and a driving rod is arranged on the rotating sleeve, and the driving rod cooperates with the ratchet.

The other end of the handle is connected to the reinforcing rod through threads, and a sleeve is arranged on the outside of the reinforcing rod.

The booster rod and the sleeve are set together and connected by bolts. The sleeve is provided with a bar hole, and the bar hole corresponding to the bar hole is provided with threaded holes at intervals. The inner end of the bolt Set through the bar hole in the threaded hole.

The adapter has an H-shaped structure, the end joint has a Y-shaped structure, and both ends of the adapter and the end joint are provided with round holes.

The insulating pull rod has a multi-section structure, and the dual-purpose wire lifting card is provided with a connecting mechanism, and at least one wire slot is symmetrically arranged on both sides of the connecting mechanism.

The beneficial effects of the utility model are:

1. The utility model simplifies the operation tool, greatly reduces the size and weight of the wire lifting tool, and achieves the purpose of replacing the hanging wire clamp, and the wire lifting hook is designed as a dual-purpose type, so there is no need to replace the fixture during operation, and multiple sub-conductors can be completed at one time The replacement of wire clamps improves work efficiency.

2. Turning the handle of the utility model can complete the lifting and lowering of the wire through the mechanical screw, which is convenient for the operator to operate, and the lever on the turning sleeve can control the rotation direction of the ratchet, preventing the operator from misoperation.

3. The booster rod and the sleeve of the utility model have a telescopic function, and the long end of the booster rod can be changed by changing the fixing position of the nut, which is convenient for the operator to operate, and the booster rod is connected with the handle through a thread, which is beneficial to the operator Easy to install and carry, the swivel sleeve and the handle can be disassembled.

4. The insulating pull rod of the utility model has a multi-section structure, which can be increased or decreased according to the site conditions. It has good flexibility and is convenient for operators to work.

Description of drawings:

Figure 1 is a schematic diagram of the structure of the tool for replacing the straight tower line clamp of the UHV DC line.

Figure 2 is a schematic diagram of the mechanical screw structure

Detailed ways:

Embodiment: See Figure 1 and Figure 2, in the figure, 1-connecting fittings on the cross-arm side, 2-insulating pull rod, 3-mechanical screw, 4-dual-purpose cable clamp, 5-transfer joint, 6-end Joint, 7-sleeve, 8-handle, 9-turning sleeve, 10-screw shaft, 11-inner sleeve, 12-outer sleeve, 13-strip hole, 14-addition rod.

UHV DC line replacement linear tower wire clamp tool, a UHV DC line replacement straight tower wire clamp tool, including cross-arm side connection fittings 1, insulating pull rods 2, mechanical screw 3, dual-purpose wire lifting clamp 4, and The feature is: the cross-arm side connection fitting 1 is connected to one end of the insulating pull rod 2 through the adapter 5, the mechanical screw 3 includes a screw shaft 10, an inner sleeve 11, and an outer sleeve 12, and the three are sequentially assembled from the inside to the outside. And the two of the three are connected by threads, the outer end of the silk shaft 10 is connected to the other end of the insulating pull rod 2 through the end joint 6, and the outer end of the outer sleeve 12 is connected to the dual-purpose wire lifting card through the end joint 6. 4 are connected, the inner sleeve 11 outer end is provided with a ratchet, the ratchet outer cover is provided with a rotating sleeve 9 and ratchets, and the rotating sleeve 9 is connected with one end of the handle 8.

The ratchet is a two-way ratchet, and the rotating sleeve 9 is provided with a driving lever, which cooperates with the ratchet.

The other end of the handle 8 is connected to the booster rod 14 through threads, and the sleeve 7 is arranged on the outside of the booster rod 14 .

The booster rod 14 and the sleeve 7 are set together and connected by bolts. The sleeve is provided with strip holes 13, and the booster rods 14 corresponding to the strip holes 13 are provided with threaded holes at intervals, and the inner ends of the bolts pass through The strip-shaped hole 13 is arranged in the threaded hole.

The adapter 5 has an H-shaped structure, and the end joint 6 has a Y-shaped structure, and both ends of the adapter 5 and the end joint 6 are provided with round holes.

The insulating pull rod 2 has a multi-section structure, and the dual-purpose wire lifting card 4 is provided with a connecting mechanism, and at least one wire slot is arranged symmetrically on both sides of the connecting mechanism.

When in use, the connecting fitting 1 on the cross-arm side is connected to the pole tower through bolts, and then the connecting fitting 1 on the cross-arm side is connected to one end of the insulating rod 2 through the adapter 5, and the other end of the insulating rod 2 is connected to the wire through the end joint 6. The outer end of the shaft 10 is connected, and the outer end of the outer sleeve 12 is connected to the connection mechanism on the dual-purpose wire lifting card 4 through the end joint 6, and the insulating pull rod 2 is adjusted to place the dual-purpose wire lifting card 4 on the lower side of the wire. Install the rotating sleeve 9, the handle 8, and the booster rod 14, adjust the sleeve 7 to a suitable length, turn the lever to the rising position, turn the sleeve 7, and the wire is fixed in the wire groove to rise. After the operator completes the replacement task, turn the lever The lever is transferred to the descending position, the sleeve 7 is rotated, and the wire descends along with the dual-purpose wire lifting card 4, and when the dual-purpose wire lifting card 4 no longer bears the weight of the wire, it can be removed successively.

The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the utility model, All still belong to within the scope of the technical solution of the utility model.

Claims (6)

1. a UHVDC Transmission Lines changes tangent tower wire clamp tool, comprise cross-arm side and connect gold utensil, insulation pull-rod, machinery leading screw, dual-purposely carry line card, it is characterized in that: described cross-arm side is connected gold utensil and is connected by adapter one end with insulation pull-rod, described mechanical leading screw comprises an axle, inner sleeve, outer sleeve, three is set with from inside to outside successively, and be threaded connection between two between three, the outer end of described silk axle is connected by the other end of end-fitting with described insulation pull-rod, the outer end of described outer sleeve is connected with dual-purpose line card of carrying by end-fitting, described inner sleeve outer end is provided with ratchet, turning set and ratchet is set with outside described ratchet, described turning set is connected with one end of handle.

2. UHVDC Transmission Lines according to claim 1 changes tangent tower wire clamp tool, it is characterized in that: described ratchet is two-way ratchet, and described turning set is provided with driving lever, and described driving lever matches with described ratchet.

3. UHVDC Transmission Lines according to claim 1 changes tangent tower wire clamp tool, and it is characterized in that: the described handle other end is connected with boosting-rod by screw thread, described boosting-rod outer setting has sleeve.

4. UHVDC Transmission Lines according to claim 3 changes tangent tower wire clamp tool, it is characterized in that: described boosting-rod is together with sleeve set, and be bolted, described sleeve is provided with bar hole, the boosting-rod corresponding with bar hole is arranged at intervals with screwed hole, and the inner of described bolt is arranged in screwed hole through bar hole.

5. UHVDC Transmission Lines according to claim 1 changes tangent tower wire clamp tool, and it is characterized in that: described adapter is H-shaped structure, described end-fitting is Y-shaped structure, and adapter and end-fitting two ends are provided with circular hole.

6. UHVDC Transmission Lines according to claim 1 changes tangent tower wire clamp tool, and it is characterized in that: described insulated tension pole is multi-segment structure, described dual-purpose carrying on line card is provided with bindiny mechanism, and described bindiny mechanism bilateral symmetry arranges at least one wire casing.