Crane cable for heat treatment workshop

Abstract

The invention belongs to the machinery technical field and relates to a crane cable for a heat treatment workshop. With the crane cable adopted, problems such as the low convenience of the operation of a crane by a worker who wants to draw a workpiece out from a furnace in a heat treatment workshop due to a crane cable in the prior art can be solved. The crane cable of the invention comprises a plurality of conductors; each conductor is sleeved with an insulating layer; each insulating layer is sleeved with a protective layer; the protective layers are sleeved with a sheath; gaps between the sheath and the protective layers are filled with flame-retardant particles; a channel A along the length direction of the sheath is formed in the sheath; a memory alloy wire A is arranged in the channel A; the memory alloy wire A is linear at room temperature; and when the memory alloy wire approaches a heated workpiece, the memory alloy wire can be bent away from the workpiece. With the crane cable of the invention adopted, the convenience of the crane operation in work can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of machinery, and relates to a hanging cable used in a heat treatment workshop. Background technique [0002] At present, ordinary rubber-sheathed flexible cables are mostly used in the cable industry for moving and winding cables. During operation, the cables are subjected to various mechanical stresses such as frequent bending and stretching, which can easily lead to broken conductors, decreased insulation performance, and braided copper. The wire punctures the insulation layer to cause insulation breakdown and other phenomena, causing the equipment to stop rotating, which seriously affects the normal use of the user and causes great losses to the user. [0003] In order to solve the above problems, the Chinese patent CN 201374211Y discloses a special flat cable for traveling cranes, which extrudes a layer of insulating layer on the outside of a single conductor or a single conductor made of multi-strand u...

AI Technical Summary

Problems solved by technology

However, in the heat treatment workshop, trolley furnaces are often used, usually for processing large workpieces. When in use, when the heating is completed, the furnace door is opened, and the high-temperature large workpieces are sent out of the furnace through the rails. At this time, workers need to pass The high-temperature large workpiece is lifted by the mobile crane. At this time, the distance between the mobile crane motor and the workpiece forms a right-angled side of a right-angled triangle, and the distance between the workpiece and the worker forms the other right-angled side of the right-angled triangle. The mobile crane motor and the worker The cables between them form the hypotenuse of a right-angled triangle. In order to prevent the cables of the crane from getting too close to the workpiece and being scalded, workers need to stand far away and lift them up very high to operate the crane, which is inconvenient to operate.

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