Compressed spring type guide screw transmission platform lifting mechanism

Abstract

The invention relates to a lifting mechanism of a compression spring screw drive platform, which includes a screw drive pair, a platform base and a ceiling, and is characterized in that: the screw drive pair includes a screw rod and a screw nut, and the screw rod is fixed on the base On the base, there are guide rails, bearing seats and guide wheel devices. The four corners of the base are connected with a compression spring mechanism. The compression spring mechanism includes a column and a compression spring. The column is composed of an inner tube and an outer tube slidingly connected to it. The inner tube is fixed to the base. , the inner tube is built with a compression spring, the outer tube is fixed to the ceiling, the compression spring mechanism is connected to the screw drive pair through a steel wire rope and a guide wheel device, and the steel wire rope is fixed on the platform ceiling support after turning through the guide wheel device fixed on the base . Beneficial effects: It has good self-locking performance, which makes the platform rise and fall synchronously and smoothly and can be self-locked safely, and has good ergonomics adaptability; it adopts mechanical structures such as screw rods and compression springs, and has high reliability; it can be used normally in harsh environments , Strong environmental adaptability.

Description

technical field [0001] The invention belongs to a lifting mechanism, in particular to a compression spring type screw drive lifting mechanism used for lifting and lowering the ceiling of a platform. Background technique [0002] Existing platform lifting mechanisms can be roughly divided into two types: mechanical and hydraulic. The mechanical platform lifting mechanism, such as the notification number CN2630225Y "screw-driven lifting operation platform", relates to a screw-driven platform lifting mechanism powered by electric or manual power. This mechanism has the following disadvantages: [0003] 1. The lifting process of the platform is directly lifted by the screw rod. The screw rod bears the impact force and the weight of the lifted object, which is easy to wear and cause failure; [0004] 2. When manual power is used as the input power, due to the lack of auxiliary power devices, the work intensity is relatively high, and the adaptability of ergonomics is poor. [0...

AI Technical Summary

Problems solved by technology

[0003] 1. The lifting process of the platform is directly lifted by the screw rod. The screw rod bears the impact force and the weight of the lifted object, which is easy to wear and cause failure;

[0004] 2. When manual power is used as the input power, due to the lack of auxiliary power devices, the work intensity is relatively high, and the adaptability of ergonomics is poor.

The hydraulic cylinder of this lifting mechanism cannot self-lock for a long time, the synchronization and reliability are poor, and the maintenance technology and cost are high

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