A kind of anti-drop device for counterweight of heavy machine tool

Abstract

The invention discloses an anti-falling device for a counter weight of a heavy machine tool. The anti-falling device comprises a connection base, a rotary body and a reset spring; at a normal working state, the rotary body is upwards lifted by a steel wire rope; the rotary body is limited; the reset spring is extended; when the steel wire rope is fractured by accident, a first support arm is baffled by one of multiple bosses; moving of the counter weight is supported by two guide rails, so that the counter weight does not incline in a vertical post of the machine tool, and stops falling at the boss; and therefore, even the steel wire rope is fractured, the anti-falling device can exert a timely and effective protection effect, and the counter weight is prevented from damaging a tool body or a sliding base of the machine tool by direct falling. By adopting the anti-falling device, protection measures for the heavy machine tool are favorably improved; safety of the heavy machine tool in a production process is enhanced; troubles of a heavy machine tool user are eradicated; and market competitiveness of the heavy machine tool product is improved.

Description

technical field [0001] The invention relates to a protective device for a machine tool, in particular to an anti-falling device for a counter weight of a heavy machine tool. Background technique [0002] For heavy-duty machine tools, due to the relatively large frame structure of the machine tool, the moving parts of the machine tool are relatively large and heavy in terms of shape and weight. In order to improve the performance and quick response ability of the machine tool, and protect the relevant transmission parts at the same time, for the moving parts that move vertically and have a large mass, they usually need to be counterweighted, that is, a counterweight with a similar weight is equipped. To fully or partially balance the weight of the moving parts, so that the drive system load of the vertical moving parts is reduced. [0003] The heavy-duty horizontal milling and boring machine belongs to this type of machine tool. Not only the stroke of each CNC feed axis is l...

AI Technical Summary

Problems solved by technology

This structure has certain potential safety hazards. During the normal operation of the machine tool, due to the friction between the steel wire rope and the fixed pulley block, the steel wire rope will inevitably wear out after long-term use. If the inspection is neglected or the inspection is not timely, the wire rope will break ( In actual work, wire rope breakages occur from time to time), although the spindle box can prevent the headstock assembly from falling by locking the screw with the motor brake, but the counterweight will fall directly and quickly on the machine tool, which will Very serious safety consequences, damage to the bed or slide of the machine tool

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