Single-screw carbon fiber mechanical lifting rod

Abstract

The invention discloses a single-screw carbon fiber mechanical lifting rod. The mechanical lifting rod comprises a pipe body, a lead screw and a driving device for driving the lead screw to rotate; the pipe body is composed of a bottom pipe, a top pipe and a plurality of inner pipes; a circular ring-shaped lock base is arranged outside a pipe opening at the upper end of each inner pipe, and a nutsleeve is arranged in a pipe opening at the lower end of the top pipe and each inner pipe; a circular ring-shaped upper sleeve is arranged outside a pipe opening at the upper end of the bottom pipe, radial lock cavities are formed in the peripheries of the left side and the right side of the circular ring-shaped lock base respectively, a lock sleeve is embedded in each lock cavity, a radial slideblock and an axial stop block are arranged in each lock sleeve, and a swing block is installed on each radial slide block; a lock hook is installed on each circular ring-shaped lock base of the pipe opening at the upper end of the inner pipes except the inner pipe adjacent to the top pipe, a lock hook is also installed on the circular ring-shaped upper sleeve, and a locking hook hole is formed inthe lower surface of the corresponding circular ring-shaped lock base; and a radial sliding block limiting assembly is installed on the pipe wall at the lower part of each inner pipe and the pipe wallat the lower part of the top pipe except the inner pipe adjacent to the bottom pipe. According to the mechanical lifting rod, the radial connection between the round pipes can be realized after the rod is lifted,and the axial connection between the round pipes can be realized after the rod is descended.

Description

technical field [0001] The invention relates to a lifting rod, in particular to a single-screw carbon fiber mechanical lifting rod. Background technique [0002] In the prior art, Chinese patent ZL 98 2 38478.5 discloses a telescopic mechanical lifting rod with a single lead screw and multiple circular tubes, the mechanical lifting rod has a pipe body, a lifting driving device and an inter-tube interlocking device. [0003] The tube body is a plurality of circular tubes with diameters from large to small with the axes on the same line. Among the multiple circular tubes, the outermost circular tube is the bottom tube, and the innermost circular tube is the top tube. , the rest of the round tubes are inner tubes, the bottom tube is fixed on the base, the gap between the adjacent round tubes is the same, the outer walls of the top tube and the inner tube have guide keys along the axial direction, and the upper ends of the bottom tube and the inner tube have circular An annular...

AI Technical Summary

Problems solved by technology

[0010] 1. The connecting piece of the interlocking device between the pipes is a straight round rod-shaped radial pin hinged at one end of the lower lever inside the inner pipe and a circular pin hole of the adjacent outer round pipe. The radial pin is inserted into the pin hole by elasticity, so that the adjacent The radial connection process and interlocking of round pipes are not very reliable;

[0011] 2. The interlocking device between the pipes only has the connecting device between the radial pipes connected for lifting. There is no axial connecting device between the adjacent round pipes after the mechanical elevating rod is lowered. When the mechanical elevating rod rises again, the adjacent round pipes Due to the small gap, there will be close contact. This kind of close contact sometimes causes adjacent circular tubes to rise simultaneously due to friction without real connection. Because there is no real connection, after the contact and fit disappear, due to friction The circular tube that rises at the same time due to force will suddenly fall, and the collision caused by the sudden fall will damage the mechanical lifting rod

Images