Planetary gear pin and planetary transmission device
A technology of planetary gear and planetary transmission, which is applied in the direction of gear transmission, transmission, transmission parts, etc., and can solve the problem that the needle roller bearing cannot be fully lubricated
Pending Publication Date: 2019-07-09
SCHAEFFLER TECH AG & CO KG
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Problems solved by technology
However, most of the lubricant cannot enter the lubricant passages inside the pins due to centrifugal force, which prevents the needle bearings from being adequately lubricated
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[0022] Hereinafter, embodiments of the present invention are described with reference to the drawings. The following detailed description and accompanying drawings serve to illustrate the principles of the present invention. The present invention is not limited to the described preferred embodiments, but the scope of the present invention is defined by the claims. The invention will now be described in detail with reference to exemplary embodiments, some examples of which are illustrated in the accompanying drawings. The following description is made with reference to the drawings, and the same reference numerals in different drawings represent the same or similar elements unless otherwise indicated. The aspects described in the following exemplary embodiments do not represent all aspects of the present invention. Rather, these aspects are merely examples of systems and methods of the various aspects of the invention as recited in the appended claims.
[0023] figure 1 is a...
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The invention relates to a planetary gear pin and a planetary transmission device. The planetary gear pin used for the planetary transmission device is used for being fixed to a planetary carrier of the planetary transmission device, a planetary gear can be rotatably supported on the planetary gear pin through a rolling bearing, and the planetary gear pin comprises an axial hole, a radial hole andan oil collecting part, wherein the axial hole is provided with an opening facing the first axial end of the planetary gear pin and extends towards the second axial end of the planetary gear pin in the axial direction; the radial hole extends to the peripheral surface of the planetary gear pin from the axial hole in the radial direction; and the oil collecting part extends outwards from the firstaxial end of the planetary gear pin and is arranged to be located on the side, away from a sun gear of the planetary transmission device, of the planetary gear pin when the planetary gear pin is mounted in the planetary transmission device, wherein the radial hole is arranged to be located on the side, away from the sun gear of the planetary transmission device, of the planetary gear pin when theplanetary gear pin is mounted in the planetary transmission device.
Description
technical field [0001] The invention relates to planetary transmissions. More specifically, the present invention relates to planet gear pins for planetary transmissions. Background technique [0002] Hub motor or in-wheel drive technology integrates power, transmission and braking devices into the hub, which can simplify the structure of vehicles, especially electric vehicles. Planetary transmissions, such as planetary gear transmissions, are often included in the in-wheel drive assembly. Lubricant is stored in the housing of the planetary gear to lubricate the gears. [0003] At present, the lubrication method in the planetary gear transmission usually adopts the splash lubrication method. In this method, the gear part is immersed in the lubricant. Area to be lubricated. The planet gears are rotatably supported on the planet gear pins via radial rolling bearings inserted into the central planet gear bores, which are usually designed as needle bearings and are mounted v...
Claims
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IPC IPC(8): F16H57/08F16H57/04F16H1/32B60K17/04
CPCF16H57/08F16H57/043F16H57/0479F16H57/0486F16H1/32B60K17/046F16H2001/327
Inventor 管艳华饶玲军
Owner SCHAEFFLER TECH AG & CO KG