Distribution line pipe joint height adjustment device

Abstract

The invention discloses a height adjusting device for a pipeline connector of a distribution wire. The height adjusting device comprises a lifting column, a lead screw and a guide rod are arranged in the lifting column, the upper end of the lead screw is connected with a driving mechanism, a rectangular hole is formed in the lifting column, a rotating tube is arranged on the lead screw, a plurality of supporting blocks are arranged in the rotating tube, the supporting blocks are distributed on the inner wall of the rotating tube in the rotating direction of a thread on the lead screw, grooves are formed in the bottoms of the supporting blocks, rollers are arranged in the grooves in a rotating mode, the rollers are meshed with a thread on the lead screw, one end of the rotating tube is connected with a guide sleeve, the guide sleeve is arranged on the guide rod in a sliding mode, the other end of the rotating tube is further connected with a clamping head, and the clamping head penetrates through the rectangular hole. During work, the guide sleeve can adjust stress at the two ends of the rotating tube and enable the stress to be balanced, and cracking at the connecting position of the clamping head and the rotating tube caused by overlarge stress of one end of the clamping head is avoided. When a motor malfunctions, the rollers can have a buffering function on instant impact force between the supporting blocks and the thread, so that the damage degree of the rotating tube is reduced, and stability of a lift is improved.

Description

technical field [0001] The invention relates to a lift, in particular to a device for adjusting the height of distribution line pipe joints. Background technique [0002] The traditional screw jack is generally composed of worm gear, box, bearing, screw and other parts; the working principle is: the motor or manual drive the worm to rotate, the worm drives the worm gear to decelerate the rotation, the inner cavity of the worm gear is processed into an internal thread, and drives the screw up and down Moving, due to the worm gear and worm inside, the deceleration effect of the lead screw achieves the effect of amplifying the thrust. As a modern lifting equipment, the screw elevator has a wide range of applications, and the development of the screw elevator is also very rapid. It is not difficult to draw the development direction of the elevator in the future, among which speed, variable speed and safety performance are the key points, and the importance of safety It is very ...

AI Technical Summary

Problems solved by technology

[0003] However, in small and medium-sized load-carrying screw elevators, when the motor fails or the power is cut off, the lifting part of the elevator will suddenly fall, which will cause a large impact force between the lifting part and the supporting part, which is easy to cause lifting. Partially damaged internally, which reduces the service life of the lift

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