Gear case

Abstract

The invention relates to a gear case. The gear case is provided with a case body, an input shaft and an output shaft. The input shaft is provided with an input duplicate gear in a sliding manner in the axial direction. The output shaft is provided with an output duplicate gear in a sliding manner in the axial direction. A transition shaft is arranged between the input shaft and the output shaft, and the transition shaft is provided with a first duplicate gear and a second duplicate gear. According to the gear case, the duplicate gears are adopted to shift gears and change speeds, and four-gearspeed changing can be formed. A guide shaft and a shifting fork are used for shifting gears, and operation is flexible and convenient. The guide shaft is provided with a limiting clamping ring, and gear shifting is in place. A shifting straight gear is adopted, teeth of gear shifting face are circular arc chamfers, the sliding rate of the gear is increased, engaging is smoother, and the noise islower. The duplicate gears are each of a split structure, and machining, installing and maintaining are more convenient. The case body is made of an integrally cast HT250 material, the case body is formed in an integrally cast manner, good anti-seismic performance and bearing performance are achieved, and the leakage probability is reduced. A resin-bonded sand casting process is adopted in the case body, the external surface of the case body is bright and smooth, and the whole machine is attractive in appearance.

Description

technical field [0001] The invention relates to a transmission mechanism, in particular to a gear box. Background technique [0002] At present, due to the unreasonable configuration of the gear box structure, most of the shift gearboxes commonly used in traction in the electrical and cable industry have problems such as large noise, large vibration, easy oil leakage, and low load-carrying capacity, which cannot meet the high requirements of modern industry. Contents of the invention [0003] The purpose of the present invention is to provide a gear box with smooth meshing, low noise, small vibration and high bearing capacity. [0004] The technical solution for realizing the purpose of the present invention is: a gear box with a box body, an input shaft and an output shaft; the input shaft is axially slid to be provided with an input duplex gear, and the output shaft is axially slid to be provided with an output duplex gear. For the gear, a transition shaft is arranged b...

AI Technical Summary

Problems solved by technology

[0002] At present, due to the unreasonable configuration of the gear box structure, most of the shift gearboxes commonly used in the traction of the electrical and cable industry have problems such as large noise, large vibration, easy oil leakage, and low load-carrying capacity, which cannot meet the high requirements of modern industry.

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