Full-automatic excavator for coal mine

Abstract

The invention belongs to the field of mechanical devices for a coal mine and particularly relates to a full-automatic excavator for the coal mine. The full-automatic excavator for the coal mine comprises a base, an end cover, a bottom shell and a fan cover. The bottom shell is located on the base. The end cover is located above the bottom shell. Limiting grooves are formed on one side of the end cover and one side of the bottom shell. The fan cover is provided with convex ribs matched with the limiting grooves. The end cover, the bottom shell and the fan cover are fixed through bolts. A first output shaft is arranged between the end cover and the bottoms shell. A fastening ring is arranged between the first output shaft and the end cover and the bottom shell. The fastening ring is arranged on the first output shaft in a sleeving manner. The fastening ring is provided with an annular groove. The end cover and the bottom shell are located in the groove. An oiling plate is arranged on the first output shaft. The first output shaft is connected with a first-level return spring. The first-level return spring is connected with a second output shaft. The second output shaft is connected with a second-level return spring. The second-level return spring is connected with a third output shaft.

Description

technical field [0001] The invention belongs to the field of coal mine machinery, in particular to a fully automatic coal mine excavator. Background technique [0002] The excavator is composed of gears, shafts, bearings, box body, box cover and other main components. It is the main excavator used in coal mine production. Word teeth, because this kind of gear works relatively stable and does not generate axial force on the bearing. In the secondary excavator, in order to adapt to the change of load, the shunt type is generally used, and its high-speed stage is two pairs of symmetrical helical teeth. , the low-speed stage is usually made of herringbone teeth, so that the low-speed stage gears and bearings are arranged symmetrically, the load is evenly distributed along the tooth width, the bearings are evenly loaded, and the torque on the dangerous section of the intermediate shaft is equivalent to half of the torque transmitted by the shaft, such as the Chinese patent 20081...

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a fully automatic coal mine excavator to solve the problem of low precision mentioned in the above-mentioned background technology

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