Gripping device for falling object in pressure-relief well

Abstract

The invention discloses a gripping device for a falling object in a pressure-relief well. The gripping device comprises a pipe body and a gripping component; the gripping component comprises a lifting rod, at least three connecting rods and at least three claw hooks, wherein the lifting rod is arranged inside the pipe body, the upper parts of the claw hooks are hinged to the lower end of the pipe body, the middle part of each claw hook is hinged to one end of the corresponding connecting rod, and the other ends of the corresponding connecting rods are hinged to the lower end of the lifting rod. Under the effect of self gravity, the lifting rod of the gripping component moves to drop, the lifting rod drives the connecting rods to move relatively, and further drives the at least three claw hooks to stretch outward along the lower end of the pipe body, the device is vertically placed inside the pressure-relief well so as to enable a foreign object in the pressure-relief well to be positioned among the claw hooks, the lifting rod is pulled upward, the claw hooks are gathered together to be close to the direction of the lifting rod under the effect of the corresponding connecting rods until the foreign object is gripped firmly, finally, the relative position between the lifting rod and the pipe body is kept, the device is integrally lifted, and the foreign object is discharged out of the pressure-relief well.

Description

technical field [0001] The invention relates to a grabbing device for falling objects in a decompression well. Background technique [0002] The pressure relief well is used to reduce the pressure head and seepage pressure acting on the downstream of the embankment or in the covering layer in the dam, so as to prevent the occurrence of piping, flowing soil, swamping and other phenomena. It is a well pipe drainage facility. The relief well is easy If the relief well is blocked by foreign matter or silt, regular inspection and cleaning should be performed during the operation of the relief well; for the relief well blocked by silt, high-pressure water pipes are generally used to wash away the silt. For large-volume foreign matter, currently only rely on manual work, but manual discharge of foreign matter is time-consuming and laborious. And there are security risks. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide ...

AI Technical Summary

Problems solved by technology

[0002] The pressure relief well is used to reduce the pressure head and seepage pressure acting on the downstream of the embankment or in the covering layer in the dam, so as to prevent the occurrence of piping, flowing soil, swamping and other phenomena. It is a well pipe drainage facility. The relief well is easy If the relief well is blocked by foreign matter or silt, regular inspection and cleaning should be performed during the operation of the relief well; for the relief well blocked by silt, high-pressure water pipes are generally used to wash away the silt. For large-volume foreign matter, currently only rely on manual work, but manual discharge of foreign matter is time-consuming and laborious. And there are security risks

Images