Hydraulic expansion type movable connector

Abstract

Disclosed is a hydraulic expansion union joint which is characterized in that the hydraulic expansion union joint comprises a concave joint; the concave joint is provided with a central hole; an annular concave groove is arranged on the inner surface of the central hole; the union joint also comprises a convex joint; the lower segment of the convex joint is provided with a radial perforation; both ends of the radial perforation are provided inner threads; one end of an oil inlet-outlet hole is communicated with the radial perforation with the other end extended out of the oil inlet-outlet hole; a segment of the convex joint is movably arranged in the central hole of the concave joint; 2 connecting components are respectively arranged on both ends of the radial perforation; each connecting component is composed of a locking screw ring provided with an outer thread and fixedly connected with the thread of the radial perforation, and a movable small shaft provided with an annular lug boss on one end and nested with a spring and a seal ring; the movable small shaft is arranged in the radial perforation with one segment movably nested with the locking screw ring. The hydraulic expansion union joint is adopted to have the advantages of rapid and convenient connection and separation, being applicable to the movable connection between the carriages of the automobiles or trains controlled through the hydraulic mode, the movable connection between the drilling rods in the geological petroleum drilling and the devices for the urban garbage disposal.

Description

technical field [0001] The invention belongs to a quick coupling joint made of metal, hydraulically controlled, and kept connected by a locking element, and relates to a hydraulic expansion joint, which is suitable for the flexible connection between parts, and is especially suitable for garbage collection and transfer compression in the device. Background technique [0002] In the use of industrial products and products, there are many fields that require active connections, such as: the active connection of automobiles and train carriages, the active connection of drill pipes in geological oil drilling, and the hanging, dragging, and holding of various industrial products. Connection etc.; In the prior art, the movable connection between the compartments of automobiles or trains and the movable connection device of the drill pipe in geological oil drilling have relatively complicated structures, and multiple steps are required to complete the connection in use; In some fi...

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Problems solved by technology

[0002] In the use of industrial products and products, there are many fields that require active connections, such as: the active connection of automobiles and train carriages, the active connection of drill pipes in geological oil drilling, and the hanging, dragging, and holding of various industrial products. Connection etc.; In the prior art, the movable connection between the compartments of automobiles or trains and the movable connection device of the drill pipe in geological oil drilling have relatively complicated structures, and multiple steps are required to complete the connection in use; In some fields, active connection between parts is required, for example: in garbage collection and transfer compression equipment, Chinese patent ZL 200520049925.1 (notification number CN2784357) discloses a "full hydraulic briquetting garbage transfer station", the garbage transfer In the station, the lower end of the cylinder rod of the hydraulic cylinder is connected to the briquetting block, and the rubbish in the garbage bin is compacted through the briquetting block; because the briquetting block is in direct contact with the garbage, the rubbish in the rubbish bin does not move with the garbage truck when the briquetting block is compacted, and the rubbish sticks on the briquetting block. The garbage will pollute the environment and may cause diseases, and there will be unsafe hidden dangers after long-term use

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