CN201166099Y - Inner gearing planetary gear transmission - Google Patents

Abstract

The utility model relates to an internal mesh planet gear transmission device for the automatic gearboxes of locomotives, which satisfies the transmission demand and the lubrication demand of brakes. The structure of the utility model is characterized in that the clutch hub on the first gear ring has 28 spline teeth, eight lubricant holes of two groups are provided on the first gear ring from the root circle of an inner gear to the root circle of the outer spline as the clutch hub, while each group has 4 lubricant holes. The internal mesh planet gear transmission device has the advantages of simplified structure of lubricant pipeline, improved the match between the planet gear transmission device and the brake and eliminated bad lubrication on the brake, and the utility model increases the one-way clutch spline teeth, to reduce the load on the brake.

Description

The internal-gearing planet gear transmission device

Technical field

The utility model relates to a kind of internal-gearing planet gear transmission device that is applied to the automatic transmission case of Motor Vehicle, especially the planetary type gear transmission unit of being made up of two planet rows with 4 forward speed ratios and 1 reverse speed ratio.

Background technique

Generally speaking, comprise several planetary gear set in the automatic transmission case transmission system, a planet group comprises three rotating members and several small gears, and three rotating members are respectively the planet carrier of sun gear, ring gear and support small gear.Three coaxial rotations of rotating member.And the clutch of control gear transmission device in the automatic transmission case comprises clutch and break, and one is partially integrated in the internal-gearing planet gear transmission device.

Adopt in the automatic transmission case of this structure, gear ring is integrated clutch hub discloses a kind of planetary gear set as Chinese patent 200510051417.1, has increased as brake hub and the spline that cooperates with friction plate at the gear ring external cylindrical surface.And, on ring gear, have oilhole from the root circle of internal tooth to the root circle of external splines, by these oilholes with lubricant oil from the gear ring delivered inside to the gear ring outside, the break of lubricated ring gear outside.

Though these oilhole designs are sentenced the collection that makes things convenient for lubricant oil at the root circle of internal tooth, and have considered the phase place of spline and internal tooth, in this planetary gear set, can't satisfy the requirement of break by the flow of lubrication of these oilholes.

The model utility content

Require problem in order to solve the greasy property that satisfies break when guaranteeing the transmission requirement, the utility model provides the internal-gearing planet gear that a kind of brake load is little, the break lubricating condition is good transmission device.

Concrete architecture advances scheme is as follows:

The internal-gearing planet gear transmission device comprises one first gear ring, comprises internal gear on first gear ring, and the raceway of integrated clutch hub, overrunning clutch, and described integrated clutch hub is the splined shaft shape, and has oilhole;

One first planet carrier has the spline in order to outputting power on first planet carrier, and integrated internal gear as second gear ring, more than two with first gear ring on first planetary pinion of internal gear engagement,

One first sun gear has the spline in order to input power on first sun gear,

One second planet carrier has on second planet carrier in order to the spline of input power with in order to the helical gear of outputting power, more than two with second planetary pinion of second gear ring engagement,

One second sun gear, integrated clutch hub on second sun gear;

The spline tooth number of clutch hub is 28 on described first gear ring,

Have 8 oilholes from internal gear tooth root circle to external splines tooth root circle on described first gear ring as clutch hub; Be laid with 4 oilholes apart from the exterior edge face on 19 millimeters the first gear ring circumference, be laid with 4 oilholes in addition apart from the exterior edge face on 23 millimeters the first gear ring circumference.

The beneficial effects of the utility model: the quantity of oilhole is increased to 8, and apportion becomes two groups, optimized the structure of lubricating oil path, strengthened the coupling between planetary type gear transmission unit and the break, eliminated the phenomenon of break insufficient lubrication.Increase the overrunning clutch spline tooth number on the other hand, to reduce the load of break.

Description of drawings

Fig. 1 is the utility model partial cross section view.

Fig. 2 is the first gear ring partial cross section view of the present utility model.

Embodiment

Below in conjunction with accompanying drawing, the utility model is further described by embodiment.

Embodiment:

Referring to Fig. 1, the internal-gearing planet gear transmission device comprises:

Comprise internal gear on one first gear ring 1, the first gear ring 1, in gear ring as first planet row 3, the integrated clutch hub of clutch 2, the raceway of overrunning clutch; Described integrated clutch hub 4 is the splined shaft shape, and its spline tooth number is 28,

Have 8 oilholes 5 from internal gear tooth root circle to external splines tooth root circle on first gear ring 1 as clutch hub; On the first gear ring circumference of exterior edge face 6 (reference level) 19 millimeters, be laid with 4 oilholes, on the first gear ring circumference of exterior edge face 6 (reference level) 23 millimeters, be laid with 4 oilholes in addition.

Spline in order to outputting power is arranged, and integrated internal gear on one first planet carrier 7, the first planet carrier 7 as second gear ring, more than two with first gear ring on the internal gear planet gear meshed,

Spline in order to input power is arranged on one first sun gear 8, the first sun gear 8,

Have on one second planet carrier 9, the second planet carrier 9 in order to the spline of input power with in order to the helical gear of outputting power, second planet carrier passes through the spline mechanical connection with first gear ring 1, more than two with the second gear ring planet gear meshed,

Integrated clutch hub on one second sun gear 10, the second sun gears 10,

More than two with first gear ring on the internal gear planet gear meshed and more than two with the second gear ring planet gear meshed all around the rotation of the axis of first sun gear;

This transmission device is integrated two clutch hubs and an overrunning clutch raceway; Can pass through one or two input power in first sun gear and second sun gear, and by the first planet carrier outputting power.

Claims (1)

1, internal-gearing planet gear transmission device comprises one first gear ring, comprises internal gear on first gear ring, and the raceway of integrated clutch hub, overrunning clutch, and described integrated clutch hub is the splined shaft shape, and has oilhole;

One first planet carrier has the spline in order to outputting power on first planet carrier, and integrated internal gear as second gear ring, more than two with first gear ring on first planetary pinion of internal gear engagement,

One first sun gear has the spline in order to input power on first sun gear,

One second planet carrier has on second planet carrier in order to the spline of input power with in order to the helical gear of outputting power, more than two with second planetary pinion of second gear ring engagement,

One second sun gear, integrated clutch hub on second sun gear,

It is characterized in that:

The spline tooth number of clutch hub is 28 on described first gear ring,

Have 8 oilholes from internal gear tooth root circle to external splines tooth root circle on described first gear ring as clutch hub; Be laid with 4 oilholes apart from the exterior edge face on 19 millimeters the first gear ring circumference, be laid with 4 oilholes in addition apart from the exterior edge face on 23 millimeters the first gear ring circumference.

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