Compressed spring type guide screw transmission platform lifting mechanism

Abstract

The invention relates to a lifting mechanism of a pressure spring typed screw mandrel transmission platform, which includes a screw mandrel transmission pair as well as a base and a platfond of the platform. The invention is characterized in that the screw mandrel transmission pair includes a screw mandrel and a screw nut. The screw mandrel is fixed on the base which is provided with a guide rail, a bearing seat and a guide wheel device. The four corners of the base are connected with a pressure spring mechanism which includes an upright post and a pressure spring. The upright post consists of an inner tube and an outer tube which is connected with the inner tube in a sliding way. The inner tube is fixed with the base and is provided with the pressure spring. The outer tube is fixed with the platfond. The pressure spring mechanism is connected with the screw mandrel transmission pair through a steel wire and the guide wheel device. The steel wire is fixed on a supporter of the platfond of the platform after changing direction through the guide wheel device fixed on the base. The invention has the advantages that the invention has excellent self-lock performance to lead the platform to lift synchronously and stably and self lock safely with good ergonomics adaptability; the machinery mechanisms such as screw mandrel and pressure spring are adopted, thus having high reliability; the invention can work normally under the severe environment with high environment 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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