Variable-activity connecting rod mechanism driven by servo motor

Abstract

The invention discloses a variable-activity connecting rod mechanism driven by a servo motor. The variable-activity connecting rod mechanism comprises a base 1, a large arm lifting mechanism, a wrist connecting rod pitching mechanism, a servo drive device, a first locking device 5 and a second locking device 22. The large arm lifting mechanism comprises a large arm 20, a first connecting rod 3 and a second connecting rod 6. The wrist connecting rod pitching mechanism comprises a drive rod 17, a third connecting rod 15, a connecting piece 13 and a fourth connecting rod 11. The first locking device 5 and the second locking device 22 are installed on a second rotation pair 4 and a fifth rotation pair 7 correspondingly. The servo drive device comprises the first servo motor which is connected with the drive rod 17 to drive the drive rod 17 to rotate. The first locking device 5 and the second locking device 22 conduct locking in an electromagnetic manner. According to the variable-activity connecting rod mechanism, work of two freedom degrees can be achieved simply through one drive rod, the use number of motors is reduced, and the manufacturing cost of the mechanism is reduced.

Description

technical field [0001] The invention relates to the mechanical field, in particular to a variable-activity link mechanism driven by a servo motor. Background technique [0002] In the past few years, due to the shortage of personnel in the labor market, labor costs have increased year by year, which has promoted the wide application of sugarcane grabbers in sugarcane harvesting and processing operations. There are two types of sugarcane grabbers: mechanical and hydraulic. At present, most of the mechanical arms of the cane grabber are hydraulically driven. Since the hydraulic transmission uses hydraulic oil as the medium for power transmission, there are the following problems: its starting performance is poor, and it is easy to cause Leakage occurs after internal components are worn, and the leaked hydraulic oil will pollute the environment and affect the quality of sugarcane raw materials; hydraulic oil is greatly affected by temperature, the overall efficiency is low, and...

AI Technical Summary

Problems solved by technology

There are two types of sugarcane grabbers: mechanical and hydraulic. At present, most of the mechanical arms of the cane grabber are hydraulically driven. Since the hydraulic transmission uses hydraulic oil as the medium for power transmission, there are the following problems: its starting performance is poor, and it is easy to cause Leakage occurs after internal components are worn, and the leaked hydraulic oil will pollute the environment and affect the quality of sugarcane raw materials; hydraulic oil is greatly affected by temperature, the overall efficiency is low, and sometimes there is noise and vibration

At present, there are few variable-degree-of-freedom mechanisms that can be used in practice, and no variable-degree-of-freedom mechanisms that have been applied to cane grabbing machines have been seen.

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