"One pull three" tension pay-off with asymmetrical traction plate and matching pay-off pulley
A technology of pay-off pulley and traction plate, which is applied in the direction of overhead lines/cable equipment, etc., can solve the problems of unrealistic deployment and traction plate flipping, and achieve the effects of simplifying the construction plan, saving construction costs, and ensuring construction quality
Active Publication Date: 2011-11-30
CHINA ELECTRIC POWER RES INST +1
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Problems solved by technology
If the existing one-to-four traction board is used in the "one-to-three" construction, since the number of wires connected to the two sides of the traction board is different, it will generate torque to the traction board, and the anti-twisting device cannot overcome such a large torque, resulting in The traction plate is overturned and the construction cannot be realized
Method used
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Embodiment Construction
[0027] Figure 4 Shown is the structural representation of the asymmetrical traction plate and the pay-off block of the present invention.
[0028]The asymmetric traction plate of the present invention mainly includes four parts: a large guide plate 31 , a traction plate body 32 , a small guide plate 33 and an anti-twisting device 34 . Wherein the traction plate body 32 adopts an asymmetric structure, and two wires can be connected to one side, and only one wire can be connected to the other side. The large guide pull plate 31 is located at the front end of the draw plate body 32, and the large guide pull plate 31 is used to connect the main traction rope; the twist preventer 34 is connected to the tail end of the draw plate body 32, so that The anti-twisting device 34 is coaxial with the large guide pull plate 31. The two sides of the anti-twisting device 34 at the tail end of the traction plate body are provided with the small guiding pull plates 33, and two small guiding ...
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The invention provides a matching asymmetrical traction plate and a pay-off block that can meet the requirements of "one pull three" tension pay-off construction. The asymmetric pulling plate includes a large guiding plate, a pulling plate body, a small guiding plate and an anti-twisting device. Two and one small guide pull plates are respectively arranged on both sides of the anti-twisting device at the tail of the traction plate, which are respectively connected to two and one wires. The pay-off block includes hanging boards, brackets, supporting shafts, wire rope pulleys and wire pulleys. Two wire rope pulleys and one wire pulley are respectively installed on both sides of the wire rope pulley, and the position of the wire rope pulley relative to the wire rope pulley corresponds to the position of the small guide pull plate relative to the twist preventer. By ensuring the specific distance between the small guide pull plate and the axis of the anti-twist device and adding weight-reducing holes and counterweights at specific positions on the draw plate body, it is ensured that the draw plate does not turn over. The pay-off block is suspended on the transmission tower through the two suspension holes on the hanging plate, and the asymmetric load received during the pay-off is transmitted to the tower through the connector to ensure the stability of the block.
Description
technical field [0001] The invention belongs to the field of tension pay-off construction equipment for overhead power transmission lines, and in particular relates to an asymmetrical traction plate and a pay-off pulley for "one pull three" tension pay-off. Background technique [0002] Tension unwinding refers to the use of tractors, tension machines, pay-off blocks, traction plates and other construction equipment and tools to spread out the wires, so that the wires have a certain tension during the unwinding process, so that they are lifted off the ground and cross obstacles in the air. A setting-out construction method in which the state is laid out on each foundation tower in the setting-out section. At present, tension setting-out has become the most important construction method for the erection of overhead transmission line conductors at home and abroad. Compared with manual setting-out, it has obvious advantages such as less wear of wires, saving manpower, and impro...
Claims
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IPC IPC(8): H02G1/02
Inventor 缪谦夏拥军
Owner CHINA ELECTRIC POWER RES INST