A grabbing device for barrels of medium and low radioactive waste

Abstract

The invention relates to a grabbing device used for medium-low-radioactivity waste barrels, and the grabbing device comprises a main support, a grabbing motor lead screw, a transmission nut disc and a plurality of single-claw components, wherein the grabbing motor lead screw is fixed in the center of the main support, the transmission nut disc is screwed with the grabbing motor lead screw through a thread, and moves vertically under the rotation driving of the grabbing motor lead screw, and the plurality of single-claw components are radially connected with the transmission nut disc and the main support; the grabbing motor lead screw rotates to drive the transmission nut disc to move vertically, and the plurality of single-claw components are pulled to synchronously concentrically fold or eccentrically unfold, uniform-stress non-destructive clamping or placement of the medium-low-radioactivity waste barrels is realized by a multi-claw mechanism, and automatic centering of the integral grabbing device to the medium-low-radioactivity waste barrels is realized by the rolling action of a universal wheel. By adopting the grabbing device, the stress condition of the waste barrels is improved, damage is avoided, the stability of the waste barrels in the air carrying process is improved, and automatic centering of the mechanical claws and the waste barrels in the hoisting process is realized.

Description

technical field [0001] The invention relates to a handling tool, in particular to a grabbing device for a barrel of medium and low radioactive waste, and belongs to the field of mechanical technology. Background technique [0002] During the operation of nuclear power plants, it is unavoidable to dispose of used clothes and appliances with residual medium and low radioactivity. The current general method of disposal is to put these radioactive items into waste bins, then fill them with concrete, and then seal the bins for disposal. The weight of the waste barrel filled with concrete is between 200kg-400kg, and the thickness of the barrel wall is greater than or equal to 4mm. Before disposing of these waste bins, the waste bins should be transported from the placement area to a rotating detection table, and after their radioactivity is detected, they should be transported back to the placement area. In order to minimize the time that workers are exposed to the radioactive e...

AI Technical Summary

Problems solved by technology

Therefore, the position of the upper rib where the quarter point is located is the dangerous point of the barrel, and these dangerous points will appear in extreme stress conditions, and accidents such as tearing of the barrel wall are prone to occur

In addition, during the worker's operation, due to the absence of a proper indication system, the four-point engagement may cause accidental extrusion of the barrel wall, causing accidents such as barrel wall rupture

[0005] 3. During the transportation of the waste barrel in the air, due to the lack of the limit mechanism, the vibration of the driving will cause the waste barrel to swing unexpectedly, which brings safety hazards to the handling

[0006] 4. When the waste barrel is placed downward, due to the absence of a proper centering mechanism, the center axis of the barrel may have a large eccentricity with the rotation axis of the rotating detection table, which will cause the centrifugal force greater than The waste barrel slips caused by the static friction between the barrel and the detection table, which brings safety hazards

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