Hydraulic joint of underwater manipulator

An underwater manipulator and hydraulic technology, applied in the direction of manipulators, manufacturing tools, joints, etc., can solve the problems of large size and affect the movement of underwater manipulators, and achieve the effect of small internal leakage and good corrosion resistance
CN104029211AInactive Publication Date: 2014-09-10TONGJI UNIV
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Patent Information

Authority / Receiving Office
CN ¡ China
Patent Type
Applications(China)
Current Assignee / Owner
TONGJI UNIV
Publication Date
2014-09-10
Estimated Expiration
Not applicable ¡ inactive patent

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Abstract

The invention relates to a hydraulic joint of an underwater manipulator, which comprises an output screw, a cylinder body, a cored screw, a fixing nut and thrust bearings, wherein the two ends of the output screw are connected with the cylinder body via the thrust bearings; the fixing nut is assembled with the cylinder body into a whole via threaded fastening or interference fit; the output screw is inserted into a middle hollow part of the cored screw; the cored screw and the output screw form a first stage helical pair; the cored screw and the fixing nut form a second stage helical pair; hydraulic oil pressure at an oil inlet is converted into a torque for output by the two helical pairs; and forward rotation and reverse rotation of the output screw can be achieved by adjusting an oil pressure difference between the oil inlet and an oil outlet, so that large angle pendulum motion is achieved.According to the joint, very small internal leakage can be ensured via a unique helical structure and high precision processing; a stable rotation angle can be kept for a long time without external control; and most of the hydraulic joint is made of seawater corrosion-resisting stainless steel, so that the hydraulic joint is good in corrosion resistance and can operate underwater for a long term.
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Description

technical field

[0001] The invention relates to a hydraulic joint, in particular to a hydraulic joint of an underwater manipulator. Background technique

[0002] There are abundant resources in the ocean, and the speed of human development and utilization of the ocean is gradually accelerating, and the number of ocean projects involved is increasing. At present, in the field of offshore oil and gas exploration and development, most underwater operations have the characteristics of high pressure and heavy load. Driven underwater robots with operational capabilities have been widely used in the field of ocean engineering. The operating capability of the underwater robot is mainly completed by the underwater manipulator mounted on it. Due to the particularity of the working environment, the underwater manipulator is very different from the application on land. The hydraulic joints of the underwater manipulator are required to have high pressure resistance, corrosion resistanc...

Claims

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