Precise positioning and welding system for cutting teeth of cutting head of heading machine and welding method thereof

Abstract

The invention discloses a precise positioning and welding system for cutting teeth of a cutting head of a heading machine and a welding method thereof. The system comprises a first guide rail; one endof the first guide rail is fixedly connected with a support device for supporting and fixing the cutting head of the heading machine; an adjustable bracket capable of sliding in the length directionof the first guide rail is arranged at the other end of the first guide rail; and a welding gun for welding the cutting teeth of the cutting head of the heading machine is mounted on the adjustable bracket. The system controls a rotating motor connecting chuck to drive the cutting head to rotate; through sliding of a slide block on the corresponding guide rail, the distance from the welding gun toa cutting tooth base is controlled; a control system controls the oil inlet quantity and the oil outlet quantity of a hydraulic cylinder to guarantee extension of an extension rod, so that a liftingangle of the welding gun is changed, and the welding of the cutting teeth with different angles is realized; the connection between each cutting tooth and the cutting tooth base is controlled by the control system; and through movement and rotation of corresponding parts, no deviation is generated in any angle direction, so that the precise positioning is guaranteed, and the errors are reduced tothe greatest extent.

Description

technical field

[0001] The invention belongs to the technical field of coal and rock excavation machinery, and in particular relates to a precise positioning welding system and welding method for cutting heads of an excavation machine. Background technique

[0002] The cutting head is mainly used to break rocks and coal rocks. At present, the precise welding of cutting head teeth has become one of the factors to ensure the performance of roadheaders. The cutting head teeth are positioned and distributed according to a certain helical equation. Each cutting head The angles and directions of the teeth are different, which makes the welding process of the pick more difficult, and the three-way angle of the surface is prone to deviation, which will lead to a decrease in work efficiency and serious damage to the pick during the excavation process.

[0003] Therefore, it is necessary to design a precise positioning welding system for the cutting head pick of the roadheader to solv...

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