Steel wire rope pre-tightening force enhancing system and tower crane adopting same

Abstract

The invention provides a steel wire rope pre-tightening force enhancing system and a tower crane adopting the steel wire rope pre-tightening force enhancing system. The steel wire rope pre-tightening force enhancing system comprises a steel wire rope pre-tightening device (10) and a steel wire rope force enhancing and force measuring device (20), wherein the steel wire rope pre-tightening device (10) is used for pre-tightening a steel wire rope arranged on a steel wire rope winding drum (40), the steel wire rope force enhancing and force measuring device (20) is used for carrying out force enhancement and force measurement on the pre-tightened steel wire rope, and a steel wire rope subjected to the force enhancement is wound onto a hoisting mechanism winding drum of a hoisting mechanism (30) requiring the rope winding. According to the steel wire rope pre-tightening force enhancing system, the steel wire rope is pre-tightened by the steel wire pre-tightening device and is then subjected to the force enhancement by the steel wire rope force enhancing and force measuring device to obtain certain tension, so when the steel wire rope is wound on the hoisting mechanism winding drum of the hoisting mechanism requiring the rope winding, the rope guide effect of the hoisting mechanism can be improved, and simultaneously, the service life of the steel wire rope is prolonged.

Description

technical field [0001] The invention relates to the field of hoisting machinery, in particular to a steel wire rope preloading system and a tower crane having the same. Background technique [0002] In the wire rope winding system of the tower crane of the prior art, such as figure 1 As shown, the steel wire rope on the wire rope reel 10' is freely released into the wire rope force and force measuring device 20'. The friction between the rope grooves, as well as the braking torque applied to the booster drum by the hydraulic pump station system through the hydraulic brake caliper is opposite to the direction of the wire rope, and the tension of the wire rope continues to increase until the force of the wire rope and the measurement Until the reading of the force measuring device of the force device 20' reaches the required value of the predetermined steel wire rope tension, the steel wire rope reaching the specified tension enters the hoisting mechanism reel of the hoisting...

AI Technical Summary

Problems solved by technology

[0003] The above wire rope winding system has the following disadvantages: when the wire rope is released from the wire rope drum 10', the wire rope is slack, and when the slack wire rope enters the wire rope force and force measuring device 20', the steel wire rope is easy to be in the force of the force drum. Slip in the rope groove, it is difficult to effectively add force to the wire rope

The hydraulic pump station system in the wire rope force adding and force measuring device 20' needs circulating tap water to cool the hydraulic brake calipers, but circulating tap water is often difficult to obtain in actual use places, and tap water is easy to spill on the ground, which is not conducive to cleaning the working environment

In the process of adding force to the wire rope, the wire rope force and force measuring device 20' also needs to constantly adjust the pressure of the hydraulic pump station, which is inconvenient to operate

Images