Load bearing type mechanical arm

Abstract

The invention discloses a load bearing type mechanical arm, which comprises a hydraulic driving pump, wherein the hydraulic driving pump is connected with a directional mechanism; the directional mechanism is connected with a tail end executer, and comprises a main hydraulic flow passage; the main hydraulic flow passage is connected with at least two branch flow passages and a pressure leakage bypass; a pressure regulating valve is arranged in each branch flow passage; the branch flow passage comprises a first flow section, a second flow section and a third flow section in sequential and serial connection arrangement from the liquid inlet end to the liquid outlet end; the inner wall of the first flow passage is provided with a screw thread groove; the second flow section is in an ellipsoid shape; a pressure regulating valve is arranged in the second flow section; a third flow passage comprises a plurality of arc-shaped sections in tangential connection; the tangential line included angle between the inlet and the outlet of each arc-shaped section is smaller than 30 degrees; the tail end of each branch flow passage is connected with a piston rod; the piston rod is hinged to the tail end executer. The load bearing type mechanical arm has the advantages that the defects in the prior art are overcome; the driving mechanism is simplified, and the positioning capability of the mechanical arm is improved.

Description

technical field [0001] The invention relates to the technical field of mechanical arms, in particular to a load-bearing mechanical arm. Background technique [0002] In the prior art, Chinese invention patent CN102357897B discloses a 4-degree-of-freedom series-parallel hybrid heavy-duty manipulator, which improves the carrying capacity of the manipulator for heavy-duty working conditions. However, this structure uses multiple oil cylinders. On the one hand, the structure is complex. The more important problem is that the coordination of each oil cylinder is difficult, which makes the positioning ability of the mechanical arm limited. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a load-bearing mechanical arm, which can solve the deficiencies of the prior art, simplify the driving mechanism, and improve the positioning ability of the mechanical arm. [0004] In order to solve the above technical problems, the t...

AI Technical Summary

Problems solved by technology

However, this structure uses multiple oil cylinders. On the one hand, the structure is complex. The more important problem is that the coordination of each oil cylinder is difficult, which makes the positioning ability of the mechanical arm limited.

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