a precision chuck

Abstract

The invention discloses a precise chuck plate. The precise chuck plate comprises a threaded rotary disc, a fixed ring, clamping clacks, a guiding ring and a worm, wherein the threaded rotary disc is in a disc shape and comprises an annular side surface and a cylindrical outer surface; a first pre-tightened thread of which the lead direction is distributed in the radial direction of the threaded rotary disc is formed on the side surface of the threaded rotary disc; a gear structure is formed on the outer surface of the threaded rotary disc; the threaded rotary disc is accommodated in a cavity body of the fixed ring and can rotate around the axis of the fixed ring; the guide ring and the fixed ring are oppositely arranged and fixedly connected; the side surface of the guide ring makes contact with the other sides of the clamping clacks; and the worm and the threaded rotary disc form a worm wheel and worm transmission structure. According to the precise chuck plate provided by the invention, the shrinkable clamping clacks are arranged in the precise chuck plate, and the worm wheel and worm transmission structure is used, so that the function of controlling the clamping clacks to be shrunk or released synchronously and concentrically is achieved by screwing the worm; the structure of a clamping hoop is precise, and precise pre-tightening can be achieved; and in addition, pre-tightening operation is easy, the manual operation difficulty is reduced, and remote control operation is achieved conveniently through a mechanical hand.

Description

technical field [0001] The present application relates to a pipeline sealing device, in particular to a precision chuck. Background technique [0002] In environments with radiation, harmful gases, and deep seas where it is difficult for personnel to enter, the replacement of equipment can usually only be realized by the operation of a remote control manipulator. Because the operation of the remote control manipulator lacks the direct touch and operating flexibility of the human hand, and the vision is limited, the operation is very difficult. It is very difficult to realize the docking seal of the equipment in the above environment through the operation of the remote control manipulator. [0003] Existing pipeline sealing generally adopts a structure in which flanges with evenly distributed pre-tightening bolts compress the seals. In order to ensure uniform pre-tightening, a large number of pre-tightening bolts are usually used, and the pre-tightening bolts need to be tig...

AI Technical Summary

Problems solved by technology

[0004] This application provides a precision chuck, which aims to solve the problems that the existing flange bolt connection clamps are difficult to operate, require high manual operation, and are not conducive to the operation of remote control manipulators.

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