Chain type driving telescopic arm

Abstract

The invention belongs to the technical field of mechanical arms and driving structure design thereof, and particularly relates to a chain type driving telescopic arm. The chain type driving telescopic arm comprises a fixed arm, a telescopic arm, a tail end arm and a servo driving assembly; the fixed arm comprises a fixed arm body and a fixed arm supporting sleeve piece; the telescopic arm comprises a telescopic arm body, a telescopic arm guide assembly and a telescopic arm supporting sleeve piece; the tail end arm comprises a tail end arm body and a tail end arm guide assembly; and the servo driving assembly comprises a servo motor set and a driving gear. The chain type driving telescopic arm is simple and compact in overall structure, the cost is effectively reduced, meanwhile, the number and the length of needed gears and chains are reduced, and the probability of occurrence of the problems of jamming, dislocation, sliding and the like is effectively reduced; and according to the chain type driving telescopic arm, the independence and the sealing performance of a telescopic arm driving system are guaranteed, so that the telescopic arm can be used in various production operation occasions with high sealing requirements and high anti-pollution requirements on mechanical arms, such as shot blasting and paint spraying.

Description

technical field [0001] The application belongs to the technical field of mechanical arm and its drive structure design, and in particular relates to a chain-driven telescopic arm. Background technique [0002] Telescopic arms are generally used in various types of automated production lines and robots to achieve distance adjustment and control for different functions and purposes. The basic structure and functions of the current telescopic arms are relatively stable, and the most common ones are double-stage or three-stage. Telescopic arm, the telescopic arm with more segments is difficult to guarantee the stability of the overall structure, so the scope of application is small. Conventional telescopic arms generally use linear cylinders / oil cylinders, chain sprocket sets, linear motors, etc. as the driving structure. Among them, the linear cylinder The structure of the oil cylinder is complex, which is not convenient for accurate and fast positioning control, and the overal...

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Problems solved by technology

[0002] Telescopic arms are generally used in various types of automated production lines and robots to achieve distance adjustment and control for different functions and purposes. The basic structure and functions of the current telescopic arms are relatively stable, and the most common ones are double-stage or three-stage. Telescopic arm, the telescopic arm with more segments is difficult to guarantee the stability of the overall structure, so the scope of application is small. Conventional telescopic arms generally use linear cylinders / oil cylinders, chain sprocket sets, linear motors, etc. as the driving structure. Among them, the linear cylinder The structure of the oil cylinder is complex, which is not convenient for accurate and fast positioning control, and the overall structure is relatively bulky and complex. The linear motor drive has the disadvantages of high cost and high requirements for equipment processing accuracy. As a mature drive control structure, the chain sprocket drive can Cooperating with servo motors to achieve more accurate position and speed control, it is suitable for use in such structures with relatively simple motions, but limited by the existing chain and sprocket drive structure design scheme, in the three-stage telescopic boom, generally At least multiple drive motors are required to cooperate with multiple chains for control, and multiple drive motors need to be coordinated for linkage control between the telescopic arms to ensure accurate control of positioning and speed. With multiple motors and a large number of chains, the overall structure is still uncomplicated, and the motion control accuracy is not high

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