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Gear device

A gear device and gear technology, which is applied to gear transmission devices, hoisting devices, control devices, etc., can solve problems such as hindering the effective lubrication of gears

Pending Publication Date: 2022-04-12
VOLVO LASTVAGNAR AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This leads to lubrication and cooling problems for the gears, as fast rotating gears tend to throw lubricant provided eg via a lubricant sump outwards and prevent effective lubrication of the gears

Method used

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  • Gear device
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Experimental program
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Embodiment Construction

[0051] figure 1 A vehicle 100 in the form of a truck according to an embodiment of the invention is schematically shown in FIG. The vehicle 100 includes a powertrain 40 having an electric machine assembly 41 for propelling the vehicle 100 . In the illustrated embodiment, the motor assembly 41 includes two motors 42 , 43 connected to a transmission 44 . The transmission 44 is arranged to transfer torque from the electric motor assembly 41 to a prop shaft 45 connecting the transmission 44 to a transaxle 46 which drives drive wheels 47 of the vehicle 100 . Thus, in the illustrated embodiment, vehicle 100 is an all-electric vehicle configured to be driven solely by electric machine assembly 41 . Vehicle 100 may be arranged with more than one drive axle, for example two or more drive axles.

[0052] Although the motor assembly 41 is in figure 1 is shown at the front of the vehicle 100 , but other powertrain configurations are possible. In alternative embodiments, the vehicle's...

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PUM

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Abstract

A gear arrangement (1) for a transmission of a vehicle such as an electric vehicle, the gear arrangement (1) comprising: a shaft (2) extending along a longitudinal rotation axis (A), the shaft (2) comprising an inner axial conduit (3) for guiding a lubricant; a gear (4) comprising a base (5) centered on the shaft, and a plurality of gear teeth (6) disposed around the periphery of the gear, the gear preferably configured to rotate with the shaft. The gear arrangement further comprises an inner radial conduit (7) for guiding lubricant from the inner axial conduit to the gear teeth. The inner radial duct may extend at least partially behind the gear cover (8).

Description

technical field [0001] The present invention relates to a gear device, a gear assembly, a transmission for a vehicle, a powertrain of a vehicle, and a vehicle. [0002] The invention is applicable to heavy vehicles such as trucks, buses and construction equipment. Although the invention will be described in relation to trucks, the invention is not limited to this particular vehicle, but may also be used in other vehicles such as buses, trailers, wheel loaders, excavators, passenger cars, and the like. The invention is particularly applicable to electric vehicles powered by one or more electric machines. Background technique [0003] In vehicle transmissions, cooling and lubrication of the gears is usually achieved by providing a lubricant sump or bath in the transmission housing in which the gear teeth of some of the gears are immersed . The meshing engagement between the gear teeth ensures that the lubricant is diffused to the gears rather than submerged in a lubricant p...

Claims

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Application Information

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IPC IPC(8): F16H57/04F16H1/08F16H55/08B60K17/04
CPCF16H57/0495F16H57/0431F16H57/0426F16H1/08
Inventor 拉尔斯·塞特斯特兰德斯塔凡·卡塞尔
Owner VOLVO LASTVAGNAR AB