CN202392093U

CN202392093U - Bearing lubricating structure for drive gear shaft of gear case for urban rail transit vehicles

Info

Publication number: CN202392093U
Application number: CN201120484386XU
Authority: CN
Inventors: 蒲全卫; 陈喜红; 申长宏; 易兴利; 高彬
Original assignee: CSR Zhuzhou Electric Locomotive Co Ltd
Current assignee: CRRC Zhuzhou Locomotive Co Ltd
Priority date: 2011-11-29
Filing date: 2011-11-29
Publication date: 2012-08-22
Anticipated expiration: 2021-11-29

Abstract

The utility model discloses a bearing lubricating structure for drive gear shaft of gear case for urban rail transit vehicles, which belongs to the field of design of gear cases for urban rail transit vehicles and is used for solving the problem that an outer bearing in a plurality of bearings mounted at one end of a drive gear shaft cannot be fully lubricated. A drive gear shaft is mounted on an upper case, an outer end cover is connected to the lateral end of the upper case, and a lower case is connected below the upper case. A first oil collecting sump is arranged above bearings and on the inner wall of the upper case and is communicated with an outer bearing through an oil inlet passage. A second oil collecting sump is arranged between the inner wall of the outer end cover and an outer ring of the outer bearing. Residual lubricating oil in the second oil collecting sump flows into an oil sump of the lower case along an oil return passage. A special oil circuit is designed to supplement the lubricating oil entering the outer bearing, so that the outermost bearing is fully lubricated, temperature rise is effectively controlled for the outermost bearing, and the service life of the outermost bearing is prolonged.

Description

The city rail traffic vehicle is with gear-box driving gear shaft bearing lubrication structure

Technical field

The utility model relates to the city rail traffic vehicle and uses the gear box designs field, is specially a kind of city rail traffic vehicle with gear-box driving gear shaft bearing lubrication structure.

Background technique

The lubricating oil splash lubricating system is all taked in the bearing lubrication of city rail traffic vehicle gear box, belongs to optional lubricated, utilizes the lubricant oil that is splashed on the gear case body inwall to flow in the bearing through special oil circuit it is lubricated.For through the extruding between gear tooth, make the lubricant oil on the gear teeth flow directly into the bearing lubrication mode in the bearing, as shown in Figure 1, when being furnished with two bearings, have only less lubricant oil can flow to the outermost bearing on the pinion shaft right side.When the pinion shaft rotating speed was higher, the temperature rise of outermost bearing was obvious.

The city rail traffic vehicle all is not provided with the lubricant oil supply that special oil circuit guarantees the outermost bearing to above-mentioned situation with gear-box driving gear shaft bearing lubrication structure at present.

The model utility content

In order to overcome the deficiency that existing gear-box outboard bearing can not sufficient lubrication; The utility model aims to provide a kind of city rail traffic vehicle with gear-box driving gear shaft bearing lubrication structure; Through special oil circuit is set the lubricant oil that gets into outboard bearing is replenished; Make outermost bearing lubrication abundant, can control the temperature rise of outermost bearing effectively, prolong its working life.

To achieve these goals, the technological scheme that the utility model adopted is:

A kind of city rail traffic vehicle is with gear-box driving gear shaft bearing lubrication structure; At driving gear shaft one end a plurality of bearings are housed, this driving gear shaft is contained on the upper box, and said upper box side is connected with outer end cap; Its underpart is connected with lower box; Its structural feature is, on the upper box inwall and the top position that is positioned at bearing be provided with first oil sump, this first oil sump with between the bearing in the outside, be communicated with through oil inlet passage.

In order to improve lubrication effect further to outboard bearing, be provided with second oil sump between said outer end cap inwall and the outboard bearing outer ring, this second oil sump is communicated with drainback passage.

As preferred version, on the said upper box inwall cover plate is housed, form said first oil sump between said cover plate and the upper box inwall.

In order to strengthen the oil-collecting ability of first oil sump, link to each other through boss between said cover plate and the upper box inwall, form said first oil sump between said thus cover plate, boss and the upper box inwall.

Be lubricated in order to guarantee that lubricant oil in first oil sump is delivered on the bearing in the outside smoothly, have oil inlet hole and oil-feed tank on the said upper box, said outer end cap top has oil-feed tank; The oil-feed tank of said oil inlet hole, upper box and the oil-feed tank of outer end cap are communicated with the formation oil inlet passage.

As preferred version, said outer end cap inwall and between the outer ring of the bearing in the outside, form second oil sump.

Said upper box bottom has oil drainage hole and oil-discharge trough, and said outer end cap bottom has oil-discharge trough; The oil-discharge trough of said oil drainage hole, upper box, the oil-discharge trough of outer end cap are communicated with the formation drainback passage.

For the lubricant oil that guarantees to be splashed on the upper box roof falls into first oil sump, the inwall on said upper box top is provided with the leakproof oil gluten plate.The level height of the oil drainage hole of said upper box is high at the bottom of than the pond of second oil sump.

The oil-discharge trough of said upper box, the oil-discharge trough of outer end cap are arranged on and the vertical curve position at angle of crossing the outer end cap center; Oil drainage hole on the upper box is certain distance at the bottom of the Vertical direction distance second oil sump pond, can guarantee that the lubricant oil that gathers in second oil sump gets into outboard bearing and is lubricated.Lubricant oil unnecessary in second oil sump is back to lower box along oil drainage hole.

As a kind of instance, said driving gear shaft one end is equipped with two bearings.

By said structure; When adopting when making lubricant oil on the gear teeth flow directly into the bearing lubrication mode in the bearing through the extruding between gear tooth; Can flow to two outermost bearings in the bearing in order to ensure enough lubricant oil, the utility model provides a kind of special lubricating structure to the outermost bearing through adding oil sump and oil circuit on former lubricating system basis.This lubricating structure working principle is following:

As shown in Figure 2, the pinion shaft right side is by two bearings, during gear-box work; The gear that lubricant oil is rotated takes on the gear-box inwall, and the leakproof oil gluten plate at casing top imports the oil on the inwall in the right side oil sump that is provided with, and on casing and right side outer end cap, processes oil circuit; Oil in the oil sump of right side is imported the outermost bearing; Simultaneously, the oil-discharge trough of oil-discharge trough on the casing and right side outer end cap all is arranged on and the vertical curve position at angle of crossing the outer end cap center, and oil drainage hole is certain distance at the bottom of the Vertical direction distance second oil sump pond; Make the certain oil storage space of formation between outer end cap and outboard bearing, guarantee that enough oil masses get into the outermost bearing.

Like this,, also have special oil circuit that the lubricant oil that gets into right side outermost bearing is replenished, make it fully lubricated except making lubricant oil get into right side outermost bearing through gear teeth extruding.

Compared with prior art; The beneficial effect of the utility model is: the utility model is applied in rail traffic vehicles gear-box main drive gear bearing and lubricates; It is lubricated that bearing is obtained fully, particularly for gear shaft one side by two bearings, two bearings only depend on the gear tooth extruding lubricant oil to be brought into the lubricating system of outermost bearing; It is lubricated fully that the utility model has obtained outermost bearing, the working life of having improved bearing.

Below in conjunction with accompanying drawing and embodiment the utility model is done further to set forth.

Description of drawings

Fig. 1 is the lubricating structure schematic representation of existing outermost bearing;

Fig. 2 is a kind of embodiment's of the utility model a structure principle chart;

Fig. 3 is the in-line figure of the said upper box of the utility model;

Fig. 4 is the oil circuit figure of the said upper box of the utility model;

Fig. 5 is the oil circuit figure in the said outer end cap of the utility model;

Fig. 6 is the A-A sectional view of Fig. 5.

In the drawings

The 1-driving gear shaft; The 2-upper box; The 3-cover plate; 4-leakproof oil gluten plate; The 5-boss;

The 6-oil inlet hole; 7, the 8-oil-feed tank; The 9-outer end cap; 10, the 11-oil-discharge trough;

The 12-oil drainage hole; The 13-lower box; 14-first oil sump; 15-second oil sump.

Embodiment

A kind of city rail traffic vehicle is with gear-box driving gear shaft bearing lubrication structure, and is as shown in Figure 2, and driving gear shaft 1 is positioned on the upper box 2, and driving gear shaft 1 right side is by two bearings, and the left side is by a bearings.Form lubricating structure by the oil-feed tank 8 on the oil inlet hole 6 on upper box 2, cover plate 3, leakproof oil gluten plate 4, outer end cap 9, first oil sump 14, the upper box 2 and oil-feed tank 7, the outer end cap 9, the oil-discharge trough 10 on the outer end cap 9, oil-discharge trough 11 and the oil drainage hole 12 on the upper box 2 to right side outermost bearing.

During gear-box work, lubricant oil can be splashed on the casing roof, and the leakproof oil gluten plate 4 that is arranged on upper box 2 inwalls can import first oil sump 14 with the lubricant oil that is splashed on the casing roof.

As shown in Figure 3, said upper box 2 is provided with boss 5, on the boss 5 tapped hole is arranged, and through threaded connector cover plate 3 is connected on the boss 5, forms first oil sump 14.

The in-line that oil-feed tank 8 on oil inlet hole 6 on the said upper box 2, oil-feed tank 7 and the outer end cap 9 is formed can import the oil in first oil sump 14 in the outermost bearing.Like Fig. 4, Fig. 5 and shown in Figure 6; Oil-discharge trough 11 on the upper box 2 is arranged on and the vertical curve position at angle of crossing the outer end cap center; Oil-discharge trough 10 on the outer end cap 9 also is arranged on the position that becomes same angle with the vertical curve of crossing the outer end cap center; Because oil-discharge trough 11, oil-discharge trough 10 and oil drainage hole 12 be not in extreme lower position; As shown in Figure 4, the lubricant oil that in formation second oil sump 15, the second oil sumps 15 between upper box 2, outer end cap 9 and outboard bearing outer ring, gathers can guarantee that enough lubricant oil gets into the outermost bearing.

Oil drainage hole 12 communicates with oil-discharge trough 11 on the upper box 2, and the inwall of lubricant oil unnecessary in second oil sump 15 along upper box 2 and lower box 13 imported in the oil sump of lower box 13.

The content that the foregoing description is illustrated is to be understood that to these embodiments and only is used to be illustrated more clearly in the utility model; And be not used in the restriction the utility model scope; After having read the utility model, those skilled in the art all fall within the application's accompanying claims institute restricted portion to the modification of the various equivalent form of values of the utility model.

Claims

1. a city rail traffic vehicle is with gear-box driving gear shaft bearing lubrication structure; At driving gear shaft (1) one end a plurality of bearings are housed, this driving gear shaft (1) is contained on the upper box (2), and said upper box (2) side is connected with outer end cap (9); Its underpart is connected with lower box (13); It is characterized in that, on upper box (2) inwall and the top position that is positioned at bearing be provided with first oil sump (14), this first oil sump (14) with between the bearing in the outside, be communicated with through oil inlet passage.

2. city rail traffic vehicle according to claim 1 is with gear-box driving gear shaft bearing lubrication structure; It is characterized in that; Between outer end cap (9) inwall and outboard bearing outer ring, be provided with second oil sump (15), this second oil sump (15) is communicated with drainback passage.

3. city rail traffic vehicle according to claim 1 and 2 is with gear-box driving gear shaft bearing lubrication structure; It is characterized in that; On said upper box (2) inwall cover plate (3) is housed, forms said first oil sump (14) between said cover plate (3) and upper box (2) inwall.

4. city rail traffic vehicle according to claim 3 is characterized in that with gear-box driving gear shaft bearing lubrication structure, links to each other through boss (5) between said cover plate (3) and upper box (2) inwall.

5. city rail traffic vehicle according to claim 1 and 2 is characterized in that with gear-box driving gear shaft bearing lubrication structure, has oil inlet hole (6) and oil-feed tank (7) on the said upper box (2), and said outer end cap (9) top has oil-feed tank (8); The oil-feed tank (7) of said oil inlet hole (6), upper box (2) and the oil-feed tank (8) of outer end cap (9) are communicated with the formation oil inlet passage.

6. city rail traffic vehicle according to claim 1 and 2 is characterized in that with gear-box driving gear shaft bearing lubrication structure, said outer end cap (9) inwall and between the outer ring of the bearing in the outside, form second oil sump (15).

7. city rail traffic vehicle according to claim 1 and 2 is characterized in that with gear-box driving gear shaft bearing lubrication structure said upper box (2) bottom has oil drainage hole (12) and oil-discharge trough (11), and said outer end cap (9) bottom has oil-discharge trough (10); The oil-discharge trough (11) of said oil drainage hole (12), upper box (2), the oil-discharge trough (10) of outer end cap (9) are communicated with the formation drainback passage.

8. city rail traffic vehicle according to claim 1 and 2 is characterized in that with gear-box driving gear shaft bearing lubrication structure the inwall on said upper box (2) top is provided with leakproof oil gluten plate (4).

9. city rail traffic vehicle according to claim 1 and 2 is characterized in that with gear-box driving gear shaft bearing lubrication structure, and the level height of the oil drainage hole (12) of said upper box (2) is high at the bottom of than the pond of second oil sump (15).

10. city rail traffic vehicle according to claim 1 is characterized in that with gear-box driving gear shaft bearing lubrication structure said driving gear shaft (1) one end is equipped with two bearings.