A sand core lifting device

Abstract

The invention discloses a sand core lifting device. The sand core lifting device comprises a main lifting mechanism and an auxiliary lifting mechanism; the main lifting mechanism comprises a main support frame vertically arranged, a main lifting hook and a right fixture; the auxiliary lifting mechanism comprises an auxiliary lifting hook, a traction rope, a clamping lever and a left fixture; a mounting base is fixedly arranged on the side wall of the main support frame; a guide wheel is arranged on the mounting base; the upper end of the traction rope penetrates through the guide wheel to connect with the auxiliary lifting hook; the lower end of the traction rope is connected with the upper end of the clamping lever; the left fixture is arranged at the lower end of the clamping lever, andis opposite to the right fixture; and the middle position of the clamping lever is hinged with a frame body of the main support frame. Opening and closing of the left fixture and the right fixture arerealized through cooperation between the main lifting mechanism and the auxiliary lifting mechanism, so that clamping and lifting of sand cores without surface damage are realized; and the fixtures are directly acted on the surfaces of the sand cores, so that the problems of more procedures, weak surface quality of the sand cores and loose later sand filling caused by embedment of lifting handlesand lifting lugs are prevented.

Description

technical field [0001] The invention relates to the technical field of foundry sand core circulation, in particular to a sand core lifting device. Background technique [0002] In the casting production process, due to the shape characteristics of most sand cores and the limitation of the position and size of the lower core during box assembly, it is not allowed to set hanging handles, lifting lugs and other structures on the sand core, but in the process of core assembly It also needs to be assembled in the lifting state, so that the sand core without lifting handle and lifting lug cannot be lifted by conventional hook-type lifting equipment; and the sand core needs to be destroyed when the lifting lug and lifting handle are pre-embedded in the sand core In order to expose the lifting lugs and handles, sand filling is required after lifting, which not only increases the process, but also reduces the surface quality of the sand core. At the same time, the sand filling may no...

AI Technical Summary

Problems solved by technology

[0002] In the casting production process, due to the shape characteristics of most sand cores and the limitation of the position and size of the lower core during box assembly, it is not allowed to set hanging handles, lifting lugs and other structures on the sand core, but in the process of core assembly It also needs to be assembled in the lifting state, so that the sand core without lifting handle and lifting lug cannot be lifted by conventional hook-type lifting equipment; and the sand core needs to be destroyed when the lifting lug and lifting handle are pre-embedded in the sand core In order to expose the lifting lugs and handles, sand filling is required after lifting, which not only increases the process, but also reduces the surface quality of the sand core. At the same time, the sand filling may not be firm after filling. The resulting sand particles enter the molten metal and cause sand inclusion defects in the casting

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