Head soldered structure for tamping pick

Abstract

The invention relates to a wear-resistant tamping pick in railway ballast tamping machinery, in particular to a head soldered structure for a tamping pick. The head soldered structure comprises a tamping pick head body; the surface of the tamping pick head body is provided with grooves, having a depth greater than the solder thickness, at intervals; protrusions are arranged among the grooves; a first wear-resistant alloy sheet is soldered in each groove through solder; a plurality of second wear-resistant alloy sheets are attached to the front end of the tamping pick head body in covering manner. According to the principle that protruding parts of mutually abrasive surfaces are more abraded than concave parts, the upper and lower abrasive surfaces of the tamping pick head are provided witha height difference in a manner that the outer surface of the alloy sheets of high hardness is higher than the outer surface of the tamping pick head body of low hardness; therefore, the usage of wear-resistant alloy material is decreased, longer life is gained, manufacture and application costs of the tamping pick head are reduced, the service life of the tamping pick is extended with manufacture cost reduced, and wear resistance is greatly improved.

Description

technical field [0001] The invention relates to a wear-resistant tamping pick in a tamping device of a railway ballast tamping machine, in particular to a brazing structure of a tamping pick head. Background technique [0002] The wear-resistant tamp pick in the tamping device of the railway ballast tamping machine, because it directly contacts with the tamped ballast, needs to bear a large impact and vibration load and the action of the downward insertion force, especially on the hardened road bed. During operation, the tamping pick must be broken and tamped on the slabbed ballast bed under the combined action of vibration force and downward insertion force, so the tamping force borne by the tamping pick will increase several times. In the previous structure, brazing was used. Technology, the wear-resistant alloy sheet is covered on the entire plane of the upper and lower surfaces of the head of the hammer, and the front section is obliquely embedded, brazed and embedded in...

AI Technical Summary

Problems solved by technology

[0002] The wear-resistant tamping pick in the tamping device of the railway ballast tamping machine, because it directly contacts the tamped ballast, needs to bear a large impact and vibration load and the action of the downward insertion force, especially on the hardened road bed. During operation, the tamping pick must be broken and tamped on the slabbed ballast bed under the combined action of vibration force and downward insertion force, so the tamping force borne by the tamping pick will increase several times, and brazing was used in the previous structure. Technology, the wear-resistant alloy sheet is covered on the entire plane of the upper and lower surfaces of the head of the hammer, and the front section is obliquely embedded, brazed and embedded into the tapered alloy head. This structure has poor wear resistance, short service life, and high production cost.

Images