Dual-pulley rack and dual-pulley hanging system formed by same

Abstract

The invention discloses a dual-pulley rack and a dual-pulley hanging system formed by the same, so as to solve the problem that a construction mode capable of solving running board passing ability andthe load balance problem of each pulley can not be found out in dual-pulley hanging modes in an extreme high voltage line pay-off project. The system comprises a supporting channel steel connecting wheel cores of the two pulleys and a rack body connected onto an iron tower beam, wherein the two pulleys are hinged at two ends of the bottom side of the rack body respectively; and the middle part atthe top side of the rack body is connected onto the iron tower beam. A lever self adaptation principle is adopted, the load of each pulley can tend to be balanced effectively, and the passing abilityof the running board and a hydraulic pipe protective sleeve during a lay-out process can be improved.

Description

technical field [0001] The invention belongs to the technical field of hangers, and in particular relates to a double pulley hanger and a double pulley suspension system composed thereof. Background technique [0002] In the construction of power lines, due to the diverse changes in the path terrain of the transmission line, the stress state of the pay-off pulley and the passing state of the conductors change greatly. The suspension method of the pulley is closely related to the lay-out quality of the pay-off and the safety control of the pay-off process. . Under normal circumstances, we use a single pulley suspension. However, for the tower position with large gear distance, large height difference and large turning angle, the single pulley suspension method cannot be used, but double pulleys are required for suspension. At present, the method of "Tension Wire Construction Technology Guidelines" is basically used for suspension in engineering construction, but it is found...

AI Technical Summary

Problems solved by technology

During this process, although the horizontal thrust T will be transmitted to the second block through the supporting channel steel between the first block and the second block, because the first block moves in front, and the position of the motion curve is higher than that of the second block, so in When the walking board passes through the first tackle, the walking board will often push the first tackle higher than the second tackle, causing the first tackle to raise the running board, and even the traction rope breaks away from the wheel groove of the second tackle, such as figure 1 As shown in 1b, the first pulley is actually under the force of a single wheel in the process, and the double pulley group does not play a corresponding role

At the same time, the walking board often accumulates a certain amount of potential energy and then passes through instantly, hitting the second block, causing the second block to be greatly impacted, which is likely to cause damage to the wheel, and then damage the wire.

Moreover, after the walking board passes the balance point, due to the height difference between the first block and the second block and the tendency of the block to return along the curve after the horizontal thrust suddenly decreases, it may cause the walking board to directly cross the second block, or even quit. as a result of

[0005] The above-mentioned sudden change process is relatively obvious for the impact and oscillation brought about by the entire block system and the pay-off system, and it cannot be used for reference in the double-trolley suspension method of the UHV line pay-off project to solve the problem of the passage of the board and the performance of each block. Construction methods for problems such as force balance

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