Swing type multistage electric telescopic cylinder

Abstract

The invention discloses a swing type multistage electric telescopic cylinder which comprises a first support, a second support, a shell, a worm, a worm gear and a worm gear shaft. The shell, the worm, the worm gear and the worm gear shaft are arranged between the first support and the second support. The shell is rotationally connected with the first support through a first rotating shaft. The shell is rotationally connected with the second support through a second rotating shaft. The worm gear shaft is of a cylindrical structure. The worm and the worm gear are installed in the shell. The shell is connected with a drive motor used for driving the worm to rotate. One side of the shell is connected with a sleeve. One end of the worm gear shaft stretches in the shell and is in running fit with the shell, and the other end of the worm gear shaft stretches in the sleeve. The worm gear shaft is connected with a multistage telescopic mechanism used for conducting step-by-step stretching and contracting under the drive of the worm gear shaft. By means of the swing type multistage electric telescopic cylinder, synchronous stretching and contracting can be achieved based on ingenious combination of worm gear and worm transmission and threaded transmission, a self-locking function is achieved, and a swing function can be achieved under a load reaction effect.

Description

technical field [0001] The invention relates to an electric telescopic cylinder, in particular to a swing type multi-stage electric telescopic cylinder. Background technique [0002] The pitching mechanism of the existing scattering communication antenna currently adopts the combination of self-made deceleration transmission chain and worm gear reducer, which has many components, and the installation and adjustment links are not easy to control; there is also a single-stage electric push rod, and the antenna is tilted up. At the same time, the rear end screw protrudes longer, which not only interferes with the mounting surface, but also affects the rotation of the azimuth. [0003] In addition, the original design was not well considered in terms of rainproof and dustproof design. Sand and gravel dust would enter, causing the lubricating grease to dry and fall off, serious gear wear, reducing the transmission efficiency of the mechanism, and even causing the mechanism to fai...

AI Technical Summary

Problems solved by technology

[0002] The pitching mechanism of the existing scattering communication antenna currently adopts the combination of self-made deceleration transmission chain and worm gear reducer, which has many components, and the installation and adjustment links are not easy to control; there is also a single-stage electric push rod, and the antenna is tilted up. When the rear end screw protrudes longer, it not only interferes with the mounting surface, but also affects the rotation of the azimuth

[0003] In addition, the original design was not well considered in terms of rainproof and dustproof design. Sand and gravel dust would enter, causing the lubricating grease to dry and fall off, serious gear wear, reducing the transmission efficiency of the mechanism, and even causing the mechanism to fail.

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