Bilateral movable pulley type two-stage linear linkage mechanism

Abstract

The invention discloses a bilateral movable pulley type two-stage linear linkage mechanism. The mechanism comprises a base, a movable pulley sliding block, an execution sliding block, a steel belt and movable pulley assemblies; the base, the movable pulley sliding block and the execution sliding block are in step-by-step embedded sliding fit, the movable pulley assemblies are installed at the two ends of the movable pulley sliding block, the middle section of the steel belt is fixed to the base, the two ends of the steel belt are fixed to the execution sliding block at the same time, and the whole steel belt winds around the movable pulley sliding block and is tensioned through the movable pulley assemblies; and when an external driving mechanism drives the movable pulley sliding block to move, the movable pulley assemblies at the two ends of the movable pulley sliding block drive the steel belt to move so as to drive the execution sliding block to move, and the execution sliding block moves at the speed twice that of the movable pulley sliding block. According to the bilateral movable pulley type two-stage linear linkage mechanism, two-stage transmission can be achieved, and the linear transmission distance is greatly increased.

Description

technical field [0001] The invention relates to a two-stage linkage mechanism using movable pulleys, which is suitable for medical equipment such as treatment beds that require long-distance linear motion. Background technique [0002] Due to the conditions of use and actual needs, medical equipment such as treatment beds needs to use linear motion to achieve the purpose of treatment. Single-stage linear transmission often fails to meet the transmission requirements or can meet the transmission requirements but makes the equipment very large and unsuitable; while ordinary two-stage linear transmission often requires two sets of drives to achieve two-stage linear motion. The structure of this two-stage transmission The design and wiring arrangement are relatively complicated, the drive control is cumbersome and maintenance is difficult, which cannot meet the reliability requirements of medical equipment. Contents of the invention [0003] In view of this, the present inven...

AI Technical Summary

Problems solved by technology

Single-stage linear transmission often fails to meet the transmission requirements or can meet the transmission requirements but makes the equipment very large and unsuitable; while ordinary two-stage linear transmission often requires two sets of drives to achieve two-stage linear motion. The structure of this two-stage transmission The design and wiring arrangement are relatively complicated, the drive control is cumbersome and maintenance is difficult, and it cannot meet the reliability requirements of medical equipment

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