Variable motion range connection rod mechanism with revolute pair locking device

Abstract

The invention discloses a variable motion range connection rod mechanism with a revolute pair locking device. The variable motion range connection rod mechanism is characterized by comprising a base 19, a second driving rod 21, a second connection rod 2, an upper arm 4, a wrist connection rod 7, a first driving rod 17, a large arm 9, a fourth connection rod 14, a first connection rod 12, a servo actuating device and a third connection rod 10; a first electromagnetic locking device 23 is installed on a second revolute pair 15; a second electromagnetic locking device 24 is installed on a tenth revolute pair 3; the servo actuating device comprises a first servo motor and a second servo motor and is connected with the first driving rod 17 and the second driving rod 21 so as to drive the first driving rod 17 and the second driving rod 21 to rotate; and the first electromagnetic locking device 23 and the second electromagnetic locking device 24 are locked in an electromagnetic mode. The variable motion range connection rod transmission mechanism replaces traditional hydraulic transmission, and the defects that hydraulic systems are complex and prone to leaking oil are overcome.

Description

technical field [0001] The invention relates to the mechanical field, in particular to a variable-activity link mechanism with a rotating pair locking device. 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...

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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