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Railway vehicle drive unit

A technology for railway vehicles and drive units, which is applied in the directions of transmission boxes, transmission devices, and transmission device parts, etc., can solve the problem of insufficient lubricating oil of the input shaft.

Inactive Publication Date: 2011-01-12
NTN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, when the reducer is running, the amount of lubricating oil around the input shaft may be insufficient.

Method used

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  • Railway vehicle drive unit
  • Railway vehicle drive unit
  • Railway vehicle drive unit

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Experimental program
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Effect test

no. 1 approach

[0063] refer to Figure 1 ~ Figure 3 , the railway vehicle drive unit 12 and the railway vehicle wheel drive device 10 including the railway vehicle drive unit 12 according to one embodiment of the present invention will be described. also, figure 1 is a schematic sectional view of a wheel drive device 10 for a railway vehicle, figure 2 yes figure 1 Sectional view of II-II, image 3 It is an enlarged view of the periphery of the eccentric part 16a, 16b.

[0064] First, refer to figure 1 , The wheel driving device 10 for a railway vehicle includes: a wheel 11 for a railway vehicle (hereinafter referred to as "wheel 11"); The rotation of a driving source (not shown) is decelerated and transmitted to the wheels 11. The wheel drive device 10 for a railway vehicle is arranged at a lower portion of a railway vehicle body (not shown).

[0065] The railway vehicle drive unit 12 mainly includes a reduction gear housing 13 , an input-side rotating member 14 , a reduction mechanis...

no. 2 approach

[0105] Next, a second embodiment of the present invention will be described. Figure 4 It is a figure which shows the structure of the wheel drive apparatus for railway vehicles of 2nd Embodiment. refer to Figure 4 , in this embodiment, the railway vehicle drive unit 12 includes the reduction gear housing 13, the input side rotating member 14, the reduction mechanism 15, the carrier 23 as a fixed member, and the first and second axle bearings 24, 25. Same as the previous embodiment.

[0106] However, the carrier 23 differs from the previous embodiment in that the lubricating oil holding chamber 35 is provided inside the carrier 23 . Therefore, parts different from those of the previous embodiment will be described in detail, and the same parts will be given the same reference numerals and their descriptions will be omitted.

[0107] The reducer case 13 has a space in which lubricating oil is sealed, and is held by the inner diameter surface of the wheel 11 . The space in ...

no. 3 approach

[0122] Next, a third embodiment of the present invention will be described. Figure 6 ~ Figure 14 It is a figure which shows the railway vehicle drive unit of 3rd Embodiment. Referring to the drawings, as a third embodiment, a railway vehicle drive unit 112 and a railway vehicle wheel drive device 110 including the railway vehicle drive unit 112 according to an embodiment of the present invention will be described. also, Figure 6 is a schematic sectional view of a wheel drive device 110 for a railway vehicle, Figure 7 yes figure 1 Sectional view of VII-VII, Figure 8 It is an enlarged view of the periphery of the eccentric part 116a, 116b, Figure 9 It is an enlarged picture of domestic sales 119, Figure 10 It is an enlarged picture of domestic sales 120, Figure 11 ~ Figure 13 is a diagram showing a pump as a lubricating oil delivery mechanism, Figure 14 It is a figure which shows the counterweight 122 provided with the lubricating oil delivery mechanism.

[0123]...

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PUM

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Abstract

A railway vehicle drive unit (12) rotationally drives the wheel (11) of a railway vehicle. In more concrete, the railway vehicle drive unit (12) comprises a speed reducer housing (13) held on the inner diameter surface of the wheel (11) and rotated integrally with the wheel (11), an input side rotating member (14) connected to a drive source, a speed reduction mechanism (15) for reducing the rotational speed of the input side rotating member (14) and transmitting the reduced speed to the speed reducer housing (13), a fixed member (23) disposed in the speed reducer housing (13) and fixedly connected to the vehicle body, axle bearings (24, 25) for rotatably supporting the speed reducer housing (13) in relative to the fixed member (23), and lubricating oil circulation mechanisms (32, 33) for circulating a lubricating oil between the speed reduction mechanism and the axle bearings (24, 25).

Description

technical field [0001] The present invention relates to a railway vehicle drive unit, in particular to a railway vehicle drive unit capable of independently driving left and right wheels. Background technique [0002] A conventional railway vehicle drive unit is disclosed in, for example, Japanese Patent Application Laid-Open No. 2007-230508. The railway vehicle drive unit disclosed in this publication includes an electric motor and a speed reducer that decelerates the rotation of the electric motor and transmits it to the wheels. [0003] In order to generate the torque necessary for the operation of the railway vehicle and to obtain a large passenger compartment space, a small cycloidal speed reducer capable of obtaining a high reduction ratio is used in the drive unit of the railway vehicle. Specifically, it includes: an input shaft that rotates integrally with the motor; a curved plate that supports the eccentric portion provided on the input shaft as a freely rotatable...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H1/32B61C9/46F16H57/02
CPCF16H57/0471F16H1/32F16H57/0482B61C9/46
Inventor 三木大辅片冈幸浩安达贵弥山田真裕后藤大辅玉田健治
Owner NTN CORP