Gearbox

Abstract

The invention provides a gearbox. The gearbox comprises a gearbox body, an oil tank body, an oil outlet pipe and an oil return pipe. The gearbox body communicates with the oil tank body through the oil outlet pipe and the oil return pipe. The gearbox body comprises a gearbox containing cavity, a heat-dissipation interlayer, a driving gear and a driven gear. The heat-dissipation interlayer is attached to the cavity wall of the gearbox containing cavity. The driving gear and the driven gear are engaged in the gearbox containing cavity. The oil tank body comprises an oil tank containing cavity, a heat insulating layer, an oil outlet, an oil return port and a heater. The heat insulating layer is attached to the cavity wall of the oil tank containing cavity. The oil outlet and the oil return port are formed in the cavity wall of the oil tank containing cavity and communicate with the oil outlet pipe and the oil return pipe correspondingly. The heater is arranged at the bottom of the oil tank containing cavity. The gearbox is of a split type structure, and the size and weight of the gearbox are reduced; the gears in the gearbox is kept being lubricated, so that abrasion of the gears is reduced, and the service life of the gearbox is prolonged; and meanwhile, lubricating oil in an oil tank can be evenly heated when the external temperature is too low, and the working efficiency of the gearbox is improved.

Description

technical field [0001] The invention relates to the technical field of gear boxes, in particular to a gear box. Background technique [0002] The gearbox is an important part widely used in mechanical transmission. When a pair of gears mesh, due to the unavoidable errors such as tooth pitch and tooth shape, meshing impact will occur during operation, resulting in gear wear and gear meshing phase. the corresponding noise. At present, in the technical field of gearbox lubrication, the gearbox body is generally used as an oil tank for storing lubricating oil, that is, the lubricating oil is stored in the inner cavity of the gearbox, and the gear teeth are directly immersed in the lubricating oil. The characteristic of this structural design is that the gearbox is compact in structure, simple in design, and can use the oil stirring action of the gear teeth in the gearbox to play a lubricating role. However, the gear box with this structural design has the following disadvantag...

AI Technical Summary

Problems solved by technology

However, the gear box with this structural design has the following disadvantages: 1. This structural design needs to store more than 300 liters of lubricating oil inside the gear box, which will result in a larger volume and heavier weight of the gear box; 2. The oil stirring action of the gearbox makes a large amount of high-viscosity lubricating oil splash on the box wall of the gearbox, which can easily cause oil leakage in the gearbox. Oil loss seriously reduces the working efficiency of the gearbox; 3. When the gearbox is in a low-temperature environment, it is necessary to install a heater inside the gearbox to heat the lubricating oil. However, due to the limitation of the internal structure of the gearbox, setting the heater The quantity is small, and the power of each heater cannot be too large, so the heating performance of the lubricating oil is not ideal, and thus cannot meet the needs of the low temperature environment

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