CN203189693U - Self-backflow type sealing structure of rail vehicle gear case - Google Patents

Self-backflow type sealing structure of rail vehicle gear case Download PDF

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Publication number
CN203189693U
CN203189693U CN2013201504482U CN201320150448U CN203189693U CN 203189693 U CN203189693 U CN 203189693U CN 2013201504482 U CN2013201504482 U CN 2013201504482U CN 201320150448 U CN201320150448 U CN 201320150448U CN 203189693 U CN203189693 U CN 203189693U
Authority
CN
China
Prior art keywords
flange
seal
sealing cover
sealing
seal ring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn - After Issue
Application number
CN2013201504482U
Other languages
Chinese (zh)
Inventor
陈亚东
胡高华
程龙
邱彦杰
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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CRRC Qishuyan Institute Co Ltd, Changzhou Ruitai Engineering Machinery Co Ltd filed Critical CRRC Qishuyan Institute Co Ltd
Priority to CN2013201504482U priority Critical patent/CN203189693U/en
Application granted granted Critical
Publication of CN203189693U publication Critical patent/CN203189693U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a self-backflow type sealing structure of a rail vehicle gear case. The self-backflow type sealing structure of the rail vehicle gear case comprises a sealing cover, an oil blocking plate and a sealing ring. The sealing cover is provided with a first sealing cover flange, a second sealing cover flange, a third sealing cover flange, a fourth sealing cover flange, a sealing cover oil return gap, a first sealing groove and a third sealing groove. The sealing ring is provided with a first sealing ring flange, a second sealing ring flange, a third sealing ring flange, a fourth sealing ring flange, a fifth sealing ring flange, a second sealing groove and a fourth sealing groove. A first sealing gap is formed between the sealing ring and the oil blocking plate, and a second sealing gap is formed between the sealing ring and the sealing cover. A third sealing gap, a fourth sealing gap, a fifth sealing gap, a sixth sealing gap and a seventh sealing gap are formed between the sealing cover and the sealing ring. The second sealing cover flange, the third sealing cover flange, the fourth sealing cover flange, the third sealing ring flange, the fourth sealing ring flange and the fifth sealing ring flange are sequentially arranged along the radial direction. The self-backflow type sealing structure of the rail vehicle gear case is reliable in sealing and compact in structure.

Description

A kind of rail vehicle gear-box is from the return flow type 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, the rotation that is particularly useful for middle and high fast rail vehicle uni-drive gear box connect the position from the return flow type labyrinth seal structure, belong to the track traffic apparatus field.
Background technique
At present, the rail vehicle gear-box of China adopts oil lubrication mostly.Gear-box 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.
At the Chinese patent publication number be: CN102009663 A, name are called in the patent documentation of " city rail vehicle gear-box sealing configuration ", have introduced a kind of sealing configuration for the city rail vehicle gear-box.At the Chinese patent publication number be: CN201914272U, name are called in the patent documentation of " from the return flow type labyrinth seal structure ", have introduced a kind of from the return flow type labyrinth seal structure.More than in two kinds of technological schemes, all only be provided with four road seal clearances, therefore all only be applicable to the not high occasions of motion speed such as city rail, subway.Along with the raising of gear-box motion speed, the gear-box internal pressure also raises relatively, and the reliability of its sealing just can not satisfy the usage requirement of gear-box.Above-mentioned two kinds of technological scheme labyrinths employing is axial arranged in addition, and is bigger to the axial space requirement, is unfavorable for gear-box lightweight, compactness design.
Along with China's rail vehicle motion speed constantly develops to middle and high speed, also more and more higher to its reliability requirement, wherein then require sealing reliable to the gear-box sealing system, structure is lightly compact, is fit to the high speed operation requirement, is convenient to maintaining.
Summary of the invention
The purpose of this utility model is to provide a kind of rail vehicle gear-box that seals reliable, the light compactness of structure and can satisfy high speed traveling requirement from the return flow type sealing configuration.
The technological scheme that realizes above-mentioned purpose is: a kind of rail vehicle gear-box is from the return flow type sealing configuration, comprise the sealing cover and the oil baffle that are fixed on the casing, and be fixed on seal ring on the running shaft, described sealing cover has sealing cover first flange, sealing cover second flange, sealing cover the 3rd flange, sealing cover the 4th flange and sealing cover oil return breach, form first seal groove between sealing cover second flange and sealing cover the 3rd flange, form the 3rd seal groove between sealing cover the 3rd flange and sealing cover the 4th flange; Described seal ring has seal ring first flange, seal ring second flange, seal ring the 3rd flange, seal ring the 4th flange and seal ring the 5th flange, form second seal groove between seal ring the 3rd flange and seal ring the 4th flange, form the 4th seal groove between seal ring the 4th flange and seal ring the 5th flange; Form first seal clearance between the periphery of described seal ring first flange and the endoporus peripheral wall surfaces of oil baffle, form second seal clearance between the endoporus peripheral wall surfaces of the periphery of seal ring second flange and sealing cover first flange; The interior edge face of described sealing cover first flange and the exterior edge face of oil baffle offset, described seal ring the 3rd flange is stretched in first seal groove, sealing cover the 3rd flange is stretched in second seal groove, seal ring the 4th flange is stretched in the 3rd seal groove, sealing cover the 4th flange is stretched in the 4th seal groove, forms the 3rd seal clearance, the 4th seal clearance, the 5th seal clearance, the 6th seal clearance and the 7th seal clearance successively; Surround relief chamber between described oil baffle, seal ring first flange, seal ring second flange and sealing cover first flange, the bottom of relief chamber communicates with sealing cover oil return breach; Described sealing cover second flange, seal ring the 3rd flange, sealing cover the 3rd flange, seal ring the 4th flange, sealing cover the 4th flange and seal ring the 5th flange be ecto-entad arranged radially successively.
Described casing has casing oil return breach and spill port, and casing oil return breach is communicated with spill port, and sealing cover oil return breach communicates with spill port by casing oil return breach.
Described first seal clearance, second seal clearance, the 3rd seal clearance, the 4th seal clearance, the 5th seal clearance, the 6th seal clearance and the 7th seal clearance, gap length scope are 0.3mm ~ 0.6mm.
After adopting said structure, owing to form first seal clearance between oil baffle and seal ring first flange (bearing shoulder block), most of lubricant oil is blocked in the oil baffle inboard, has only fraction to enter relief chamber.Because the relief chamber space is bigger, the lubricating oil pressure of inflow reduces, and therefore has only less amount of lubrication oil to continue to outbound flow by second seal clearance; Because relief chamber directly communicates with drainback passage, the oil that therefore flows into relief chamber can directly be back in the gear-box simultaneously.The lubricant oil that outbound flows by second seal clearance is then further reduced pressure and sealing by first seal groove, second seal groove, the 3rd seal groove, the 4th seal groove and the 3rd seal clearance, the 4th seal clearance, the 5th seal clearance, the 6th seal clearance, the 7th seal clearance, and refluxes by sealing cover oil return breach.Because each seal clearance magnitude range is designed to 0.3mm ~ 0.6mm, when guaranteeing sealability, reduced the difficulty of part processing, improved the assembly performance of part, reduced manufacture cost.Because sealing cover second flange, sealing cover the 3rd flange, sealing cover the 4th flange and seal ring the 3rd flange, seal ring the 4th flange and seal ring the 5th flange all adopt radial arrangement, its axial space is required to reduce, thereby be beneficial to gear-box lightweight, compactness design.
The extreme pressure lubricant that vehicle produces under the high speed operating mode forms multiple-sealed guarantee through each relief chamber, seal groove, drainback passage and seal clearance, and sealing effect is reliable.By adopting above-mentioned sealing configuration, realized that middle and high fast operating mode lower tooth roller box rotation connects sealing from return flow type of position, reliable for effect.In addition, the utility model also has the characteristics of the light compactness of structure, low wearing and tearing, easy care.
Description of drawings
The embodiment who provides below in conjunction with accompanying drawing is described in further detail the utility model.
Fig. 1 is that rail vehicle gear-box of the present utility model is from the structural representation of return flow type sealing configuration;
Fig. 2 is the A portion enlarged view among Fig. 1.
Embodiment
As shown in Figure 1, 2, rail vehicle gear-box of the present utility model is from the return flow type sealing configuration, comprise the sealing cover 1 and the oil baffle 2 that are fixed on the casing 4, and be fixed on seal ring 3 on the running shaft 5, described sealing cover 1 has the sealing cover first flange 1-1, the sealing cover second flange 1-2, sealing cover the 3rd flange 1-3, sealing cover the 4th flange 1-4 and sealing cover oil return breach 1-5, form first seal groove 7 between the sealing cover second flange 1-2 and sealing cover the 3rd flange 1-3, form the 3rd seal groove 9 between sealing cover the 3rd flange 1-3 and sealing cover the 4th flange 1-4; Described seal ring 3 has the seal ring first flange 3-1, the seal ring second flange 3-2, seal ring the 3rd flange 3-3, seal ring the 4th flange 3-4 and seal ring the 5th flange 3-5, form second seal groove 8 between seal ring the 3rd flange 3-3 and seal ring the 4th flange 3-4, form the 4th seal groove 10 between seal ring the 4th flange 3-4 and seal ring the 5th flange 3-5; Form the first seal clearance 6-1 between the periphery of the described seal ring first flange 3-1 and the endoporus peripheral wall surfaces of oil baffle 2, form the second seal clearance 6-2 between the endoporus peripheral wall surfaces of the periphery of the seal ring second flange 3-2 and the sealing cover first flange 1-1; The interior edge face of the described sealing cover first flange 1-1 and the exterior edge face of oil baffle 2 offset, described seal ring the 3rd flange 3-3 stretches in first seal groove 7, sealing cover the 3rd flange 1-3 stretches in second seal groove 8, seal ring the 4th flange 3-4 stretches in the 3rd seal groove 9, sealing cover the 4th flange 1-4 stretches in the 4th seal groove 10, forms the 3rd seal clearance 6-3, the 4th seal clearance 6-4, the 5th seal clearance 6-5, the 6th seal clearance 6-6 and the 7th seal clearance 6-7 successively; Surround relief chamber 11 between described oil baffle 2, the seal ring first flange 3-1, the seal ring second flange 3-2 and the sealing cover first flange 1-1, the bottom of relief chamber 11 communicates with sealing cover oil return breach 1-5; The described sealing cover second flange 1-2, seal ring the 3rd flange 3-3, sealing cover the 3rd flange 1-3, seal ring the 4th flange 3-4, sealing cover the 4th flange 1-4 and seal ring the 5th flange 3-5 be ecto-entad arranged radially successively.
The radial arrangement of these flanges requires to reduce to its axial space, thereby is beneficial to gear-box lightweight, compactness design.
As shown in Figure 1, 2, described casing 4 has casing oil return breach 4-1 and spill port 4-2, and casing oil return breach 4-1 is communicated with spill port 4-2, and sealing cover oil return breach 1-5 communicates with spill port 4-2 by casing oil return breach 4-1.
As shown in Figure 1, 2, the described first seal clearance 6-1, the second seal clearance 6-2, the 3rd seal clearance 6-3, the 4th seal clearance 6-4, the 5th seal clearance 6-5, the 6th seal clearance 6-6 and the 7th seal clearance 6-7, the gap length scope is 0.3mm ~ 0.6mm.Like this, when guaranteeing sealability, reduce the difficulty of part processing, improved the assembly performance of part, reduced manufacture cost.
As shown in Figure 1, 2, during work, owing to form the first seal clearance 6-1 between oil baffle 2 and the seal ring first flange 3-1, most of lubricant oil is blocked in the inboard of oil baffle 2, has only fraction to enter relief chamber 11.Because relief chamber 11 spaces are bigger, the lubricating oil pressure of inflow reduces, and therefore has only less amount of lubrication oil to continue to outbound flow by the second seal clearance 6-2; Because relief chamber 11 communicates with spill port 4-2, the oil that therefore flows into relief chamber 11 can directly be back in the gear-box simultaneously.The lubricant oil that outbound flows by the second seal clearance 6-2 is then further reduced pressure and sealing by first seal groove 7, second seal groove 8, the 3rd seal groove 9, the 4th seal groove 10 and the 3rd seal clearance 6-3, the 4th seal clearance 6-4, the 5th seal clearance 6-5, the 6th seal clearance 6-6 and the 7th seal clearance 6-7, and refluxes by sealing cover oil return breach 1-5.

Claims (3)

1. a rail vehicle gear-box comprises the sealing cover (1) and the oil baffle (2) that are fixed on the casing (4) from the return flow type sealing configuration, and is fixed on the seal ring (3) on the running shaft (5), it is characterized in that:
A. described sealing cover (1) has sealing cover first flange (1-1), sealing cover second flange (1-2), sealing cover the 3rd flange (1-3), sealing cover the 4th flange (1-4) and sealing cover oil return breach (1-5), form first seal groove (7) between sealing cover second flange (1-2) and sealing cover the 3rd flange (1-3), form the 3rd seal groove (9) between sealing cover the 3rd flange (1-3) and sealing cover the 4th flange (1-4);
B. described seal ring (3) has seal ring first flange (3-1), seal ring second flange (3-2), seal ring the 3rd flange (3-3), seal ring the 4th flange (3-4) and seal ring the 5th flange (3-5), form second seal groove (8) between seal ring the 3rd flange (3-3) and seal ring the 4th flange (3-4), form the 4th seal groove (10) between seal ring the 4th flange (3-4) and seal ring the 5th flange (3-5);
C. form first seal clearance (6-1) between the endoporus peripheral wall surfaces of the periphery of described seal ring first flange (3-1) and oil baffle (2), form second seal clearance (6-2) between the endoporus peripheral wall surfaces of the periphery of seal ring second flange (3-2) and sealing cover first flange (1-1);
D. the exterior edge face of the interior edge face of described sealing cover first flange (1-1) and oil baffle (2) offsets,
E. described seal ring the 3rd flange (3-3) is stretched in first seal groove (7), sealing cover the 3rd flange (1-3) is stretched in second seal groove (8), seal ring the 4th flange (3-4) is stretched in the 3rd seal groove (9), sealing cover the 4th flange (1-4) is stretched in the 4th seal groove (10), forms the 3rd seal clearance (6-3), the 4th seal clearance (6-4), the 5th seal clearance (6-5), the 6th seal clearance (6-6) and the 7th seal clearance (6-7) successively;
F. surround relief chamber (11) between described oil baffle (2), seal ring first flange (3-1), seal ring second flange (3-2) and sealing cover first flange (1-1), the bottom of relief chamber (11) communicates with sealing cover oil return breach (1-5);
G. described sealing cover second flange (1-2), seal ring the 3rd flange (3-3), sealing cover the 3rd flange (1-3), seal ring the 4th flange (3-4), sealing cover the 4th flange (1-4) and seal ring the 5th flange (3-5) ecto-entad arranged radially successively.
2. rail vehicle gear-box according to claim 1 is from the return flow type sealing configuration, it is characterized in that: described casing (4) has casing oil return breach (4-1) and spill port (4-2), casing oil return breach (4-1) is communicated with spill port (4-2), and sealing cover oil return breach (1-5) communicates with spill port (4-2) by casing oil return breach (4-1).
3. rail vehicle gear-box according to claim 1 is from the return flow type sealing configuration, it is characterized in that: described first seal clearance (6-1), second seal clearance (6-2), the 3rd seal clearance (6-3), the 4th seal clearance (6-4), the 5th seal clearance (6-5), the 6th seal clearance (6-6) and the 7th seal clearance (6-7), the gap length scope is 0.3mm ~ 0.6mm.
CN2013201504482U 2013-03-29 2013-03-29 Self-backflow type sealing structure of rail vehicle gear case Withdrawn - After Issue CN203189693U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Publications (1)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN103711879A (en) * 2014-01-17 2014-04-09 国电联合动力技术(包头)有限公司 Mechanical labyrinth sealing structure for wind power gear box
CN104074957A (en) * 2014-06-30 2014-10-01 南车戚墅堰机车车辆工艺研究所有限公司 Rotating shaft sealing method of gear box and sealing structure thereof
CN104074955A (en) * 2013-03-29 2014-10-01 常州市瑞泰工程机械有限公司 Self-backflow type sealing structure of railway vehicle gear box
CN105134922A (en) * 2015-09-18 2015-12-09 常州市瑞泰工程机械有限公司 Self-lubrication sealing structure for gear box
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 (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104074955A (en) * 2013-03-29 2014-10-01 常州市瑞泰工程机械有限公司 Self-backflow type sealing structure of railway vehicle gear box
CN104074955B (en) * 2013-03-29 2016-08-03 常州市瑞泰工程机械有限公司 Railway vehicle gear case seals structure from reverse-flow type
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
CN103711879A (en) * 2014-01-17 2014-04-09 国电联合动力技术(包头)有限公司 Mechanical labyrinth sealing structure for wind power gear box
CN104074957A (en) * 2014-06-30 2014-10-01 南车戚墅堰机车车辆工艺研究所有限公司 Rotating shaft sealing method of gear box and sealing structure thereof
CN104074957B (en) * 2014-06-30 2016-07-06 南车戚墅堰机车车辆工艺研究所有限公司 The rotation axis seal method of gear-box and sealing structure thereof
CN105134922A (en) * 2015-09-18 2015-12-09 常州市瑞泰工程机械有限公司 Self-lubrication sealing structure for gear box
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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C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20130911

Effective date of abandoning: 20160803

C25 Abandonment of patent right or utility model to avoid double patenting