Electric tensioning mechanism for traction steel wire rope of trolley of tower crane

Abstract

The invention discloses an electric tensioning mechanism for a traction steel wire rope of a trolley of a tower crane. The electric tensioning mechanism comprises a motor, a planetary gear reducer, aratchet wheel, a detent, a tension spring and a mounting seat and is characterized in that the output end of the motor is connected with the input end of the planetary gear reducer, the planetary gearreducer is connected with the mounting seat, the output end of the planetary gear reducer is connected with the ratchet wheel, and the motor drives the ratchet wheel to rotate through the planetary gear reducer; the detent is connected with the mounting seat, the tension spring is assembled between the detent and the mounting seat, one end of the tension spring is connected with the detent, and the other end of the tension spring is connected with the mounting seat; and the detent is cut into a tooth groove of the ratchet wheel through the pulling force effect of the tension spring. The electric tensioning mechanism has the characteristics of being convenient to operate, stable, quick, safe and reliable; the motor drives the ratchet wheel to rotate through the planetary gear reducer so asto wind the traction steel wire rope, thus the traction steel wire rope can be tensioned quickly and effectively, it is ensured that the traction steel wire rope has the enough tension, and thus thetower crane is safer during hoisting operation, and more precise in positioning.

Description

Technical field [0001] The invention belongs to the technical field of construction machinery and equipment, and in particular relates to an electric tensioning mechanism for traction steel wire ropes of a tower crane trolley. Background technique [0002] Tower cranes are widely used in the construction industry, and their luffing trolleys are mainly used to move objects horizontally and move objects to designated locations. The luffing trolley relies on wire rope traction to realize its operation. In order to avoid the impact of the wire rope slack caused by the trolley or rope detachment and ensure accurate positioning during work, the traction wire rope tensioning device must be adjusted from time to time to maintain a certain tension of the traction wire rope. Now all types of tower cranes are equipped with a mechanical tensioning device, which requires manual rotation of the ratchet to achieve the purpose of tensioning. The operator needs to crawl along the tower crane boom...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems of difficult operation, long time-consuming, untimely tensioning and potential safety hazards in the tensioning work when tensioning the traction steel wire rope, the present invention provides an electric tensioning mechanism for the trolley traction steel wire rope of a tower crane. The mechanism uses an electric motor as the Driven by power, the ratchet is driven by the planetary gear reducer, and the ratchet rotates and winds the wire rope for tensioning, so as to realize the electric tensioning function of the wire rope

Images