Multi-connecting-rod mechanism driven by double servo motors

Abstract

The invention discloses a multi-connecting-rod mechanism driven by double servo motors. The multi-connecting-rod mechanism comprises a base 1, a lifting mechanism, a pitching mechanism and a servo drive device. The lifting mechanism comprises a second drive rod 18, a third connecting rod 3 and a fourth connecting rod 5. One end of the first drive rod 15 is connected with the base 1 through a ninth rotation pair 16, and the other end of the first drive rod 15 is connected with one end of a first connecting rod 13 through an eighth rotation pair 14. The other end of the first connecting rod 13 is connected with the first end of a connecting piece 11 through a seventh rotation pair 12. The third end of the connecting piece 11 is connected with the second drive rod 18 through a third rotation pair 19. The other end of a second connecting rod 9 is connected with a wrist connecting rod 7 through a fifth rotation pair 8. The servo drive device comprises the first servo motor and the second servo motor which are connected with the first drive rod 15 and the second drive rod 18 correspondingly to drive the first drive rod 15 and the second drive rod 18 to rotate. The multi-connecting-rod mechanism overcomes the defect that drive motors of open chain structures need to be installed at joint positions.

Description

technical field [0001] The invention relates to the mechanical field, in particular to a multi-link mechanism driven by double servo motors. 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 somet...

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

Sometimes there will be overheating, weak work and other phenomena; hydraulic components require high machining accuracy, strict assembly requirements, difficult manufacturing, and high technical maintenance requirements during use.

With the increase of the functions of the sugarcane grabbing machine, its hydraulic system is becoming more and more complicated, and the failure is more sudden and concealed.

The mechanical cane grasping machine uses mechanical transmission parts to realize the cane grasping action, which has the advantages of being strong and durable, but the traditional single-degree-of-freedom mechanical cane grasping machine cannot complete complex actions, and its application range is very limited. The mechanical controllable mechanism electric grasping For sugarcane machines, the hydraulic transmission is replaced by a linkage mechanism. When the active rod is driven by a servo motor, it is easy to realize automation and numerical control, which solves some shortcomings of the hydraulic system.

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