CN202215736U - Sealing structure for traveling gearbox of railway vehicle - Google Patents

Sealing structure for traveling gearbox of railway vehicle Download PDF

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Publication number
CN202215736U
CN202215736U CN 201120321041 CN201120321041U CN202215736U CN 202215736 U CN202215736 U CN 202215736U CN 201120321041 CN201120321041 CN 201120321041 CN 201120321041 U CN201120321041 U CN 201120321041U CN 202215736 U CN202215736 U CN 202215736U
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CN
China
Prior art keywords
bearing support
flange
sealing
seal
seal ring
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Expired - Lifetime
Application number
CN 201120321041
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Chinese (zh)
Inventor
胡高华
陈亚东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CRRC Qishuyan Institute Co Ltd
Changzhou Ruitai Engineering Machinery Co Ltd
Original Assignee
CRRC Qishuyan Institute Co Ltd
Changzhou Ruitai Engineering Machinery Co Ltd
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Priority to CN 201120321041 priority Critical patent/CN202215736U/en
Application granted granted Critical
Publication of CN202215736U publication Critical patent/CN202215736U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses a sealing structure for a traveling gearbox of a railway vehicle. The sealing structure comprises an end cover, a framework oil seal, a bearing support, a sealing ring and a sleeve gasket, wherein the first sealing flange of the bearing support corresponds to the first flange of the sealing ring, and forms a first circumferential sealing clearance; the second sealing flange of the bearing support corresponds to the second flange of the sealing ring, and forms a second circumferential sealing clearance; the third sealing flange of the bearing support corresponds to the third flange of the sealing ring, and forms a third circumferential sealing clearance; the fifth sealing flange of the bearing support extends into the second labyrinth sealing groove of the sealing ring; the fourth flange of the sealing ring extends into the first labyrinth sealing groove of the bearing support, so as to form labyrinth sealing; a first ring-shaped sealing cavity, a second ring-shaped sealing cavity and a third-shaped ring sealing cavity are formed between the bearing support and the sealing ring; an oil return hole is formed on the bearing support and at the bottom of each sealing cavity; the framework oil seal is mounted between the end cover and the sleeve gasket; and the framework oil seal and the sleeve gasket form contact-type sealing. The sealing structure adopting bidirectional sealing has the advantages that the use is reliable, and the structure is simple.

Description

A kind of rail vehicle walking gear case sealing configuration
Technical field
The rotation that the utility model relates to a kind of gear-box that adopts oil lubrication connects the sealing configuration at position, and the axletree rotation that is particularly useful for middle and high fast rail vehicle uni-drive gear box connects the sealing at position.
Background technique
At present, the rail vehicle walking gear case of China adopts oil lubrication mostly.The walking gear case in use if oil leak occurs, not only influences the working life of strength members such as inner gear of the gear box, bearing, and can cause track environmental pollution along the line, even have influence on the adhesive performance of travelled by vehicle portion.Simultaneously; Gear-box in use, in a single day extraneous sleet dust and other impurities gets in the gear-box, will produce influence in various degree to the working life of bearing, gear etc. and the performance of lubricant oil; Therefore when the sealing system of design gear case; Require to guarantee that not only the lubricant oil in the gear-box can not outwards reveal away, also necessarily require outer foreign material of gear-box etc. can not get into box house simultaneously, promptly require the sealing configuration of gear-box can realize dual face seals.
At the Chinese patent publication number be: CN102009663A, name is called in the patent documentation of " city rail vehicle gear-box sealing configuration ", has introduced a kind of two way sealed structure that is used for the city rail vehicle gear-box.In this technological scheme, only be provided with the circumferential seal gap one, therefore only be applicable to the not high occasions of motion speed such as city rail, subway.Along with the raising of walking gear case motion speed, the gear-box internal pressure also raises relatively, and the reliability of its sealing just can not satisfy the usage requirement of walking gear case.
Along with China's rail vehicle motion speed constantly develops to middle and high speed, also increasingly high to its reliability requirement, wherein then require two way sealed reliable to walking gear case sealing system, compact structure is fit to the high speed operation requirement, is convenient to maintaining.
Summary of the invention
The purpose of the utility model is to provide a kind of two way sealed reliable, simple in structure and can satisfy the rail vehicle walking gear case sealing configuration that the high speed traveling requires.
The technological scheme that realizes above-mentioned purpose is: a kind of rail vehicle walking gear case sealing configuration; Comprise the bearing support that is fixed on the casing and be fixed on the seal ring on the axletree; Said bearing support has the matching hole of installation shaft bearing outer-ring; Also have bearing support first sealing flange, bearing support the 4th sealing flange and bearing support the 5th sealing flange; Form the first labyrinth seal groove between bearing support the 4th sealing flange and bearing support the 5th sealing flange; Said seal ring has seal ring first flange, seal ring the 3rd flange and seal ring the 4th flange; Form the second labyrinth seal groove between seal ring the 4th flange and the seal ring ring body; Bearing support first sealing flange of said bearing support is corresponding with seal ring first flange of seal ring and form the first circumferential seal gap, and bearing support the 5th sealing flange of said bearing support is stretched in the second labyrinth seal groove of seal ring, and seal ring the 4th flange of said seal ring is stretched in the first labyrinth seal groove of bearing support and formed labyrinth seal simultaneously; Said bearing support the 4th sealing flange and seal ring the 4th flange are oblique flange; Tiltedly form labyrinth seal taper annular groove between the flange, form first annular seal space between said bearing support and the seal ring, first annular seal space bottom is provided with the spill port that communicates with box house; Said bearing support also has bearing support second sealing flange, bearing support the 3rd sealing flange, said seal ring and also has seal ring second flange; Bearing support second sealing flange of said bearing support is corresponding with seal ring second flange of seal ring and form the second circumferential seal gap, and bearing support the 3rd sealing flange of said bearing support is corresponding with seal ring the 3rd flange of seal ring and form the 3rd circumferential seal gap, surrounds second annular seal space between seal ring second flange of bearing support second sealing flange of said bearing support, bearing support the 3rd sealing flange and seal ring, seal ring the 3rd flange; Said bearing support the 4th sealing flange top has radial protrusion; Form oil trap between radial protrusion and bearing support the 4th sealing flange outer side wall, said bearing support the 3rd sealing flange top has axial projection, surrounds the 3rd annular seal space between seal ring the 3rd flange of bearing support the 3rd sealing flange of said bearing support, bearing support the 4th sealing flange, bearing support end wall and seal ring; Said second annular seal space; The 3rd annular seal space bottom all communicates with spill port, and the outside of said bearing support is fixed with end cap, and stuffing box gland is equipped with in the corresponding position that is positioned at end cap on the said axletree also fixed cover; Be provided with outside framework oil seal between end cap and the stuffing box gland, outside framework oil seal and stuffing box gland form contact seal.
The diameter in the described first circumferential seal gap, the second circumferential seal gap and the 3rd circumferential seal gap successively decreases successively, forms the stepped shaft sealing configuration.
Have some circumferential decompressing grooves on the corresponding side face of bearing support first sealing flange of said bearing support and seal ring first flange of seal ring.
Have on the said end cap and have the circumferential fat groove of depositing on the hole wall of center hole of radially oil hole and end cap.
The maximum outside diameter of said seal ring is less than the minimum diameter of the bearing outer ring in the matching hole that is installed in bearing support.
After adopting said structure; Because bearing support the 4th sealing flange top has radial protrusion; Form oil trap between radial protrusion and bearing support the 4th sealing flange outer side wall, can prevent effectively that therefore oil from directly getting in the labyrinth seal, but flow in the 3rd annular seal space; Because bearing support the 3rd sealing flange top has axial projection, therefore can better oil be accommodated in the 3rd annular seal space; Because said bearing support the 4th sealing flange and seal ring the 4th flange are oblique flange, tiltedly form labyrinth seal taper annular groove between the flange, utilize conical surface pump oil principle, make oil be difficult to get in the labyrinth seal groove, increased the effect of labyrinth seal; Because the fluid that first annular seal space, second annular seal space and the 3rd annular seal space that form between bearing support and the seal ring overflow inside progressively reduces pressure; Fluid is flowed at the bottom of the chamber along the chamber wall; Flow back to box house through spill port, through the decompression of three road annular seal spaces from inside to outside, mist of oil pressure reduces gradually; Increase the difficulty that mist of oil leaks, improved sealing effect; Because stuffing box gland is equipped with in the relevant position of axletree also fixed cover; Be provided with outside framework oil seal between end cap and the stuffing box gland, outside framework oil seal and stuffing box gland form contact seal, therefore; Can prevent intrusion box houses such as outside rainwater, dust; Through adopting above-mentioned sealing configuration, realized that gear-box rotates the dual face seals of breakthrough part position under middle and high fast operating mode, sealing effect is reliable; Because the diameter in the first circumferential seal gap, the second circumferential seal gap and the 3rd circumferential seal gap successively decreases successively, the stepped shaft sealing configuration of formation has increased the mist of oil required pressure that leaks gradually; Owing to have some circumferential decompressing grooves on the corresponding end-faces of bearing support first sealing flange of said bearing support and seal ring first flange of seal ring; Therefore can increase the draining resistance in the first circumferential seal gap, strengthen the sealing effect in the first circumferential seal gap; Owing to have oil hole and deposit the fat groove on the said end cap, communicate with the outside framework oil seal mounting groove, regularly, between outside framework oil seal and stuffing box gland, form grease lubrication through the oil hole grease up, reduce friction loss, prevent that simultaneously foreign matter from getting in the mounting groove; Because the maximum outside diameter of said seal ring is less than the minimum diameter of the bearing outer ring in the matching hole that is installed in bearing support, so sealing configuration is easy for installation.The utility model can make the shutoff through circumferential seal gap, three roads, labyrinth seal and outside framework oil seal of extreme pressure lubricant that vehicle produces under the high speed operating mode, form multiple-sealed guarantee, and sealing effect is reliable.In addition, this utility model also has the characteristics of simple in structure, low wearing and tearing, easy care.
Description of drawings
Fig. 1 is the structural representation of a kind of rail vehicle walking gear case sealing configuration of the utility model;
Fig. 2 is the I portion enlarged view among Fig. 1.
Embodiment
The embodiment who provides below in conjunction with accompanying drawing does further detailed explanation to the utility model.
Like Fig. 1, shown in 2; A kind of rail vehicle walking gear case sealing configuration; Comprise the bearing support 1 that is fixed on the casing 15 and be fixed on the seal ring 4 on the axletree 16; Said bearing support 1 has the matching hole of installation shaft bearing outer-ring; Also have the bearing support first sealing flange 1-1, bearing support the 4th sealing flange 1-4 and bearing support the 5th sealing flange 1-5; Form the first labyrinth seal groove 6 between bearing support the 4th sealing flange 1-4 and bearing support the 5th sealing flange 1-5; Said seal ring 4 has the seal ring first flange 4-1, seal ring the 3rd flange 4-3 and seal ring the 4th flange 4-4; Form the second labyrinth seal groove 7 between seal ring the 4th flange 4-4 and seal ring 4 ring bodies; The bearing support first sealing flange 1-1 of said bearing support 1 is corresponding with the seal ring first flange 4-1 of seal ring 4 and form the first circumferential seal gap 8-1, and bearing support the 5th sealing flange 1-5 of said bearing support 1 stretches in the second labyrinth seal groove 7 of seal ring 4, and seal ring the 4th flange 4-4 of said seal ring 4 stretches in the first labyrinth seal groove 6 of bearing support 1 and forms labyrinth seal simultaneously; Said bearing support the 4th sealing flange 1-4 and seal ring the 4th flange 4-4 are oblique flange; Tiltedly form labyrinth seal taper annular groove 18 between the flange, form first annular seal space, 9, the first annular seal spaces, 9 bottoms between said bearing support 1 and the seal ring 4 and be provided with the spill port 12 that communicates with casing 15 inside; Said bearing support 1 also has the bearing support second sealing flange 1-2, bearing support the 3rd sealing flange 1-3, said seal ring 4 and also has the seal ring second flange 4-2; The bearing support second sealing flange 1-2 of said bearing support 1 is corresponding with the seal ring second flange 4-2 of seal ring 4 and form the second circumferential seal gap 8-2, and bearing support the 3rd sealing flange 1-3 of said bearing support 1 is corresponding with seal ring the 3rd flange 4-3 of seal ring 4 and form the 3rd circumferential seal gap 8-3, surrounds second annular seal space 10 between the seal ring second flange 4-2 of the bearing support second sealing flange 1-2 of said bearing support 1, bearing support the 3rd sealing flange 1-3 and seal ring 4, seal ring the 3rd flange 4-3; Said bearing support the 4th sealing flange 1-4 top has radial protrusion 19; Form oil trap 20 between radial protrusion 19 and bearing support the 4th sealing flange 1-4 outer side wall, said bearing support the 3rd sealing flange 1-3 top has axial projection 21, surrounds the 3rd annular seal space 11 between seal ring the 3rd flange 4-3 of bearing support the 3rd sealing flange 1-3 of said bearing support 1, bearing support the 4th sealing flange 1-4, bearing support end wall 1-6 and seal ring 4; Said second annular seal space 10; The 3rd annular seal space 11 bottoms all communicate with spill port 12, and the outside of said bearing support 1 is fixed with end cap 2, and stuffing box gland 5 is equipped with in the corresponding position that is positioned at end cap 2 on the said axletree 16 also fixed cover; Be provided with outside framework oil seal 3 between end cap 2 and the stuffing box gland 5, outside framework oil seal 3 forms contact seal with stuffing box gland 5.
As shown in Figure 2, for the stepped shaft sealing configuration that forms, further enhanced leaktightness effect, the diameter of the described first circumferential seal gap 8-1, the second circumferential seal gap 8-2 and the 3rd circumferential seal gap 8-3 successively decreases successively, forms the stepped shaft sealing configuration.
As shown in Figure 2; In order to increase the draining resistance of the first circumferential seal gap location; Strengthen the sealing effect in the first circumferential seal gap, have some circumferential decompressing grooves 13 on the corresponding side face of the bearing support first sealing flange 1-1 of said bearing support 1 and the seal ring first flange 4-1 of seal ring 4.
Like Fig. 1, shown in 2,, have on the said end cap 2 and have the circumferential fat groove 22 of depositing on the hole wall of center hole of radially oil hole 14 and end cap 2 for the ease of annotating lubricating grease.Can regularly pass through oil hole 14 grease ups, between outside framework oil seal 3 and stuffing box gland 5, form grease lubrication, reduce friction loss.
As shown in Figure 1, for the ease of assembling, the maximum outside diameter of said seal ring 4 is less than the minimum diameter of 17 outer rings of the bearing in the matching hole that is installed in bearing support 1.
As shown in Figure 1, stuffing box gland 5 has the material of certain degree of hardness and wear resistance to process, and smooth surface.

Claims (5)

1. rail vehicle walking gear case sealing configuration; Comprise the bearing support (1) that is fixed on the casing (15) and be fixed on the seal ring (4) on the axletree (16); Said bearing support (1) has the matching hole of installation shaft bearing outer-ring; Also have bearing support first sealing flange (1-1), bearing support the 4th sealing flange (1-4) and bearing support the 5th sealing flange (1-5); Form the first labyrinth seal groove (6) between bearing support the 4th sealing flange (1-4) and bearing support the 5th sealing flange (1-5); Said seal ring (4) has seal ring first flange (4-1), seal ring the 3rd flange (4-3) and seal ring the 4th flange (4-4); Form the second labyrinth seal groove (7) between seal ring the 4th flange (4-4) and seal ring (4) ring body; Bearing support first sealing flange (1-1) of said bearing support (1) is corresponding with seal ring first flange (4-1) of seal ring (4) and form the first circumferential seal gap (8-1); Bearing support the 5th sealing flange (1-5) of said bearing support (1) is stretched in the second labyrinth seal groove (7) of seal ring (4), and seal ring the 4th flange (4-4) of said seal ring (4) is stretched and in the first labyrinth seal groove (6) of bearing support (1), formed labyrinth seal simultaneously, and said bearing support the 4th sealing flange (1-4) is oblique flange with seal ring the 4th flange (4-4); Tiltedly form labyrinth seal taper annular groove (18) between the flange; Form first annular seal space (9) between said bearing support (1) and the seal ring (4), first annular seal space (9) bottom is provided with the spill port (12) that communicates with casing (15) inside, it is characterized in that:
A, said bearing support (1) also have bearing support second sealing flange (1-2), bearing support the 3rd sealing flange (1-3),
B, said seal ring (4) also have seal ring second flange (4-2),
Bearing support second sealing flange (1-2) of d, said bearing support (1) is corresponding with seal ring second flange (4-2) of seal ring (4) and form the second circumferential seal gap (8-2),
Bearing support the 3rd sealing flange (1-3) of e, said bearing support (1) is corresponding with seal ring the 3rd flange (4-3) of seal ring (4) and form the 3rd circumferential seal gap (8-3),
Surround second annular seal space (10) between seal ring second flange (4-2) of bearing support second sealing flange (1-2) of f, said bearing support (1), bearing support the 3rd sealing flange (1-3) and seal ring (4), seal ring the 3rd flange (4-3)
G, said bearing support the 4th sealing flange (1-4) top have radial protrusion (19); Form oil trap (20) between radial protrusion (19) and bearing support the 4th sealing flange (1-4) outer side wall; Said bearing support the 3rd sealing flange (1-3) top has axial projection (21)
Surround the 3rd annular seal space (11) between seal ring the 3rd flange (4-3) of bearing support the 3rd sealing flange (1-3) of h, said bearing support (1), bearing support the 4th sealing flange (1-4), bearing support end wall (1-6) and seal ring (4),
I, said second annular seal space (10), the 3rd annular seal space (11) bottom all communicates with spill port (12),
The outside of j, said bearing support (1) is fixed with end cap (2); Stuffing box gland (5) is equipped with in the corresponding position that is positioned at end cap (2) on the said axletree (16) also fixed cover; Be provided with outside framework oil seal (3) between end cap (2) and the stuffing box gland (5), outside framework oil seal (3) forms contact seal with stuffing box gland (5).
2. rail vehicle walking gear case sealing configuration according to claim 1; It is characterized in that: the diameter in the described first circumferential seal gap (8-1), the second circumferential seal gap (8-2) and the 3rd circumferential seal gap (8-3) successively decreases successively, forms the stepped shaft sealing configuration.
3. rail vehicle walking gear case sealing configuration according to claim 1 is characterized in that: have some circumferential decompressing grooves (13) on the corresponding side face of bearing support first sealing flange (1-1) of said bearing support (1) and seal ring first flange (4-1) of seal ring (4).
4. rail vehicle walking gear case sealing configuration according to claim 1 is characterized in that: have on the said end cap (2) and have the circumferential fat groove (22) of depositing on the hole wall of center hole of radially oil hole (14) and end cap (2).
5. rail vehicle walking gear case sealing configuration according to claim 1 is characterized in that: the maximum outside diameter of said seal ring (4) is less than the minimum diameter of bearing (17) outer ring in the matching hole that is installed in bearing support (1).
CN 201120321041 2011-08-30 2011-08-30 Sealing structure for traveling gearbox of railway vehicle Expired - Lifetime CN202215736U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201120321041 CN202215736U (en) 2011-08-30 2011-08-30 Sealing structure for traveling gearbox of railway vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201120321041 CN202215736U (en) 2011-08-30 2011-08-30 Sealing structure for traveling gearbox of railway vehicle

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CN202215736U true CN202215736U (en) 2012-05-09

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102954194A (en) * 2011-08-30 2013-03-06 常州市瑞泰工程机械有限公司 Railway vehicle traveling gearbox sealing structure
CN103161963A (en) * 2013-03-18 2013-06-19 南车戚墅堰机车车辆工艺研究所有限公司 Output shaft sealing device
CN103322169A (en) * 2013-06-28 2013-09-25 中国北车集团大连机车研究所有限公司 Shaft-end oil-gas sealing mechanism for transmission cases
CN103557330A (en) * 2013-11-13 2014-02-05 三一能源重工有限公司 Shaft oil seal with oil returning directly and machine tool
CN104033579A (en) * 2014-03-31 2014-09-10 南车株洲电力机车有限公司 Transmission shaft sealing device
CN103671852B (en) * 2012-09-13 2016-07-06 南车戚墅堰机车车辆工艺研究所有限公司 High gear box seal device and apply the high-speed gear box of this device
CN106555868A (en) * 2017-01-19 2017-04-05 郑州机械研究所 MPV (Multi-Purpose Vehicle) axle gear box sealing structure

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102954194A (en) * 2011-08-30 2013-03-06 常州市瑞泰工程机械有限公司 Railway vehicle traveling gearbox sealing structure
CN102954194B (en) * 2011-08-30 2015-04-22 常州市瑞泰工程机械有限公司 Railway vehicle traveling gearbox sealing structure
CN103671852B (en) * 2012-09-13 2016-07-06 南车戚墅堰机车车辆工艺研究所有限公司 High gear box seal device and apply the high-speed gear box of this device
CN103161963A (en) * 2013-03-18 2013-06-19 南车戚墅堰机车车辆工艺研究所有限公司 Output shaft sealing device
CN103161963B (en) * 2013-03-18 2015-09-23 南车戚墅堰机车车辆工艺研究所有限公司 output shaft sealing device
CN103322169A (en) * 2013-06-28 2013-09-25 中国北车集团大连机车研究所有限公司 Shaft-end oil-gas sealing mechanism for transmission cases
CN103557330A (en) * 2013-11-13 2014-02-05 三一能源重工有限公司 Shaft oil seal with oil returning directly and machine tool
CN104033579A (en) * 2014-03-31 2014-09-10 南车株洲电力机车有限公司 Transmission shaft sealing device
CN106555868A (en) * 2017-01-19 2017-04-05 郑州机械研究所 MPV (Multi-Purpose Vehicle) axle gear box sealing structure

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GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20120509

Effective date of abandoning: 20150422