Long-distance, heavy-load and parallel-axis type precision 2:1 transmission mechanism

Abstract

The invention discloses a long-distance, heavy-load and parallel-axis type precision 2:1 transmission mechanism. The mechanism mainly comprises an input shaft, an output shaft, a flexible transmission part, a pre-tensioning pressing block, an end part fixing block, etc., wherein the input shaft is parallel to the output shaft and is connected with the output shaft through a flexible transmission part; two ends of the flexible transmission part are fixed to the output shaft; an intermediate part of the flexible transmission part is fixed to the input shaft; the input shaft in rotating can drive the flexible transmission part, and the flexible transmission part can synchronously pull the output shaft to rotate; as the input shaft and the output shaft of the whole mechanism are correspondingly connected with a driving end and a load end of an limited cornering device, the parallel 2-1 transmission of the driving end and the load under the long-distance and heavy-load condition can be achieved. The mechanism has the characteristics of being high in transmission accuracy, high in transmission rigidity, simple in structure, convenient to dismount and mount, low in processing cost, and easy to construct; the problem that the long-distance, heavy-load and parallel-axis type precision 2:1 transmission is hard to achieve by a traditional transmission mode can be solved.

Description

technical field [0001] The invention belongs to the field of transmission, and mainly relates to a transmission mechanism, which can meet the requirement of a limited rotation angle device for a long-distance large-load parallel shaft precision 2:1 transmission function. Background technique [0002] At present, many devices with limited rotation angles require a precise 2:1 transmission mechanism. For example, in the mirror-stabilized photoelectric stabilization system, it is required that the line of sight rotation angle and the mirror rotation angle meet a 2:1 relationship to achieve inertial stabilization of the boresight. The driving end and the load end are driven in parallel and the rotation angle satisfies the relationship of 2 to 1. When the distance between the load inertia (mirror) and the transmission shaft is small, the traditional flexible transmission method (steel belt and wire rope) or pendulum transmission can meet the requirements. However, for long-dista...

AI Technical Summary

Problems solved by technology

However, for long-distance and large-load parallel shaft transmission, the traditional flexible transmission method has been difficult to meet the high transmission rigidity requirements of the servo system. tens of millimeters, the weight of the mirror is only a few hundred grams

With the deepening of product development, the current design of an optoelectronic product requires that the distance between the drive shaft and the reflector shaft should reach 176mm, the weight of the reflector should reach 19Kg, and the servo bandwidth should reach about 30Hz. The traditional flexible transmission method has been unable to meet the demand

Although the pendulum drive has high transmission stiffness, it is not suitable for use in compact equipment with limited rotation angle due to the large space occupied

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