Hand-held milling and digging machine manufacturing method

Abstract

The invention relates to a manufacturing method for a handheld milling and excavating machine. The method includes the following steps that (1), a common steel plate with the thickness of 8 mm is cut and made into a disc with the diameter of 25-30 cm and three milling and excavating cutter bits with the right-triangle sections; (2), three soil outlet holes are formed in the disc at the interval of a 120-degree angle; (3), the three milling and excavating cutter bits are horizontally welded to the edge of the disc at the angle of 120 degrees by the adoption of electric-arc welding; (4), a 10-cmC / 18 auger bit is welded to a 5-cmC / 20 seamless steel tube, and the seamless steel tube is welded to the center of one face of the disc; (5), a center connecting rod is arranged in the center of the other face of the disc and connected with an electric tool with the rotating speed of 500-540 r / min. The manufacturing method is low in cost and easy to implement.

Description

technical field [0001] The invention relates to the technical field of excavating the face contour of a loess tunnel, in particular to a manufacturing method of a hand-held milling and digging machine. Background technique [0002] The face excavation of the loess tunnel is a key process of tunnel construction. Due to the narrow working environment of the tunnel, the general excavator bucket on the market cannot form an upward excavation angle of 90° when shoveling, although it can reach the excavation angle when backhoeing , but there is a dead angle in the contour of the tunnel face. [0003] At present, under normal circumstances, manual excavation with foreign picks is generally used, which not only increases the workload, but also takes a long time, prolonging the exposure time of the surrounding rock. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a low-cost and easy-to-implement method for manufacturing ...

AI Technical Summary

Problems solved by technology

[0002] The face excavation of the loess tunnel is a key process of tunnel construction. Due to the narrow working environment of the tunnel, the general excavator bucket on the market cannot form an upward excavation angle of 90° when shoveling, although it can reach the excavation angle when backhoeing , but there is a dead angle in the contour of the tunnel face

[0003] At present, under normal circumstances, manual excavation with foreign picks is generally used, which not only increases the workload, but also takes a long time, prolonging the exposure time of the surrounding rock

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