Grabbing device

Abstract

The invention discloses a grabbing device. The grabbing device comprises a lifting shaft, wherein a lifting lug is arranged on the lifting shaft; the lifting shaft is in shaft connection with a plurality of sets of clamping devices; each clamping device comprises connecting arms, vertical arms and limiting arms which are arranged in a pair mode, wherein one end of each connecting arm is in shaft connection with the lifting shaft, and the other end of each connecting arm is in shaft connection with a frame; the connecting arms and the vertical arms are fixedly connected to the limiting arm; a pin is arranged at the lower part of each vertical arm; the position of a free end of each limiting arm corresponds to the position of a limiting block arranged below the frame; and when a clamp is placed in a heating furnace, the lifting lug drive the lifting shaft to move downwards, the lower end of each connecting arm rotates around the shaft, when the limiting arms are connected to the limitingblock in a lap joint mode, the connecting arms cannot rotate continuously, and at the moment, the vertical arms are just perpendicular to the horizontal plane, the pins at the lower parts of the vertical arms are inserted into a crystal, and thus the crystal can be clamped from the bottom of the crystal. The grabbing device has the advantages that due to the arrangement of the limiting block, when the clamp moves downwards, the limiting arms can be in connection with the limiting block in the lap joint mode, the swing angle of the vertical arms is limited, and it is guaranteed that the vertical arms are vertically inserted into the crystal.

Description

technical field [0001] The invention relates to the technical field of metallurgical equipment, in particular to a gripper. Background technique [0002] Boron carbide is an important special ceramic, which has many excellent properties and has been widely used. The main preparation process of boron carbide ceramics is the typical powder metallurgy process of powder preparation, molding and sintering. When the boron carbide crystal block is produced by the electric arc furnace carbothermal reduction method, the boron carbide crystal block will form a crystal after being smelted at a high temperature of 2400 degrees Celsius. When the boron carbide crystal is taken out from the boiler, it is first necessary to insert the crystal, then clamp the crystal, and finally take out the crystal. The existing extraction tool is only a kind of clip, which cannot be inserted into the crystal. Contents of the invention [0003] In order to solve the above-mentioned technical problems, ...

AI Technical Summary

Problems solved by technology

The existing extraction tool is only a clip and cannot be inserted into the crystal

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