Motion accompanying suspension device providing constant hanging force

Abstract

The invention provides a motion accompanying suspension device providing constant hanging force. The device comprises an aerostatic guide rail, a first fixed pulley, a second fixed pulley, an additional fixed pulley, a movable pulley, a suspension rope and a weight reduction weight, wherein slide blocks are slidably arranged on the aerostatic guide rail, and are fixedly connected with a fixed pulley seat; the first fixed pulley and the second fixed pulley are arranged on the fixed pulley seat; the movable pulley is arranged on a movable pulley seat; a moving part is hoisted on the movable pulley seat; one end of the suspension rope is fixed on a fixed framework; the suspension rope passes through the first fixed pulley, the movable pulley, the second fixed pulley and the additional fixed pulley in sequence; the other end of the suspension rope is connected with the weight reduction weight; the first fixed pulley and the second fixed pulley are flotation bearing pulleys; air inlet holes are reserved on the axle centers of the first fixed pulley and the second fixed pulley; the air inlet holes are communicated with high-pressure gas inlet pipes; and the moving part is hoisted on the movable pulley seat. The device has the advantages of small friction resistance, high quality accuracy and high motion accuracy, and can better adapt to high-accuracy situations.

Description

technical field [0001] The invention relates to an air flotation device, in particular to a follower device providing constant suspension force. Background technique [0002] Under the test conditions of hanging and reducing the weight of the tested mechanism, the performance of the mechanism is tested for various technical indicators. According to the movement trajectory of the suspension point of the mechanism, while performing horizontal linear motion or plane motion, the suspension point must be guaranteed to provide a constant suspension force in the vertical direction (defined as the Z axis), which requires that the suspension device must be able to move in the Z direction. Axis follow. And during the movement of the lifting point following the mechanism, no additional force will be generated as much as possible, thus affecting the spatial position or motion state of the mechanism. [0003] The existing following suspension device has defects: the frictional resistan...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies of the existing following suspension device, which has high frictional resistance and cannot adapt to high-precision occasions, the present invention provides a constant suspension that has very small frictional resistance and is not affected by the shaking of counterweight weights, and can well adapt to high-precision occasions. The movement of force follows the suspension

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