SU1654620A1 - Gear-box - Google Patents

Abstract

The invention relate to the engineering industry and can be used in the gearbox of passenger cars. The purpose of the invention is to increase efficiency and reliability in operation. The gearbox, consisting of the main and additional compartments, in which the driving and driven shafts with gear pairs are located, has an independent lubrication system without a special oil pump, consisting of channels in the housing, into which the lubricant enters when spraying it with gear pairs, in the driven shaft, in which lubricant flows from channels in the housing, and radial channels in the driven shaft, by means of which lubricant is injected into the bearing assemblies and further onto the gear pairs. In the wall between the main and additional compartments, two drain holes are made — the main upper and the calibration bottom, which allow maintaining the lubricant level in the compartments. 2 Il.

Description

This invention relates to mechanical engineering and can be used in passenger car transmissions.

The purpose of the invention is to increase the efficiency and reliability of the transmission by improving the organization of the lubrication system.

FIG. 1 shows the gearbox, longitudinal section; figure 2 - section aa in figure 1.

The gearbox contains a housing 1, divided by a wall 2 with a drain hole 3 on the main compartment 4, in which the drive shaft 5 and the driven shaft 6 with gear pairs 7-10 are located, and on the additional compartment 11, into which the drive 5 and driven 6 shafts are passed with the gear pair 12 mounted on them, the gear gear 13 of which is mounted on the driven shaft 6. The lubricant circulation device includes channels 14 in housing 1 and channels 15 and 16 in the driven shaft 6. 8 wall 2 an additional drain hole 17 is made, the cross-sectional area which is selected from the condition nstva flow extending therethrough from an additional lubrication chamber at a rate of lubricant supplied to the storage compartment when the gearbox is in steady state with a minimum calculated rotational speed the drive shaft. The lower edge of the FUNDABLE drain hole 3 is located above the lower portion of the gear ring of the gear 13.

Transmission works as follows.

When the drive shaft 5 rotates, the torque is transmitted to the driven shaft 6 through one of the five toothed pairs 7-10 or 12. The lubricant is delivered to the bearing assemblies and gears as follows.

The lubricant is driven by gears 9 and 10 into the channel 14 of the housing 1 and enters the channel 15 of the driven shaft. From the channel 15 the lubricant is injected by the radial channels 16

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through bearing assemblies (not shown) to the gear pairs 7-10 and 12 of the main 4 and additional J1 compartments. Moreover, the capacity of radial kanapov 16, located in the additional compartment, is higher than the capacity of radial channels 1 b of the main compartment. Therefore, the bulk of the lubricant passes through an additional compartment. The presence in the dividing wall 2 of two openings — a drain 3 and an additional calibration 17 — ensures reliable lubrication of the gear pair 12 and at the same time maintains the necessary lubrication level in the BASIC compartment 4 for lubricating the gear pairs 7–10 in all operating modes of the gearbox. Performing an additional drain hole 17 at the lower point of the additional compartment 11 allows for complete discharge of lubricant from the housing when it is replaced with one common drain hole (not shown) made at the lower point of housing 1. The use of radial channels 16 in the hollow driven shaft b, which act as a pump by de-centrifugal forces, it eliminates a separate oil pump from the lubrication system.

Claims (1)

Claims of the Invention A gearbox comprising a housing divided by a wall with a drain hole to a main compartment with driving and driven shafts having gears located therein and an additional compartment with at least one gear pair with a gear gear at the end of the driven shaft missed in an additional compartment, and a device for circulating lubricant, consisting of channels made in the housing and driven by the shaft, characterized in that, in order to increase the efficiency and reliability of its operation, an additional drain is made in the system The aperture located at the lower point of the additional compartment, the cross-sectional area of the aperture is chosen because the smear flow rate is equal to the additional compartment and flowing out through the apertures when the gearbox is running in the established mode and the minimum calculated rotational speed of the drive shaft above the lower portion of the gear ring gear located in the additional compartment.  I and W J 1315 FIG. 2