CN102954194B - Railway vehicle traveling gearbox sealing structure - Google Patents
Railway vehicle traveling gearbox sealing structure Download PDFInfo
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- CN102954194B CN102954194B CN201110252464.8A CN201110252464A CN102954194B CN 102954194 B CN102954194 B CN 102954194B CN 201110252464 A CN201110252464 A CN 201110252464A CN 102954194 B CN102954194 B CN 102954194B
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- bearing support
- flange
- seal
- sealing
- seal ring
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- 238000007789 sealing Methods 0.000 title claims abstract description 121
- 210000004907 gland Anatomy 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 4
- 230000002457 bidirectional effect Effects 0.000 abstract description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract 8
- 230000000694 effects Effects 0.000 description 7
- 239000004519 grease Substances 0.000 description 5
- 238000005461 lubrication Methods 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 230000006837 decompression Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Sealing Of Bearings (AREA)
- Sealing Devices (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a railway vehicle traveling gearbox sealing structure which comprises an end cover, a framework oil seal, a bearing pedestal, a sealing ring and a sealing sleeve, wherein a first sealing flange of the bearing pedestal is corresponding to a first flange of the sealing ring to form a first circumferential sealing gap; a second sealing flange of the bearing pedestal is corresponding to a second flange of the sealing ring to form a second circumferential sealing gap; a third sealing flange of the bearing pedestal is corresponding to a third flange of the sealing ring to form a third circumferential sealing gap; a fifth sealing flange of the bearing pedestal extends into a second maze sealing groove of the sealing ring; a fourth flange of the sealing ring extends into a first maze sealing groove of the bearing pedestal to form maze sealing; first, second and third sealing cavities are formed between the bearing pedestal and the sealing ring; oil return holes are arranged on the bearing pedestal and located at the bottoms of the sealing cavities; the framework oil seal is arranged between the end cover and the sealing sleeve; and contact type sealing is formed between the framework oil seal and the sealing sleeve. The railway vehicle traveling gearbox sealing structure is reliable in bidirectional sealing and simple in structure.
Description
Technical field
The present invention relates to a kind of sealing configuration adopting the through position of the rotation of the gear-box of oil lubrication, the axletree being particularly useful for middle and high fast rail vehicle uni-drive gear box rotates the sealing at through position.
Background technique
At present, the traveling gearbox of railway vehicle of China adopts oil lubrication mostly.If walking gear case in use occurs oil leak, not only affect the working life of the strength member such as inner gear of the gear box, bearing, and the environmental pollution that track can be caused along the line, even have influence on the adhesive performance in travelled by vehicle portion.Simultaneously, gear-box in use, extraneous sleet dust and other impurities is once enter in gear-box, impact in various degree will be produced to the performance of the working life of bearing, gear etc. and lubricant oil, therefore when the sealing system of design gear case, not only require to ensure that the lubricant oil in gear-box can not outwards leak out, also necessarily require the foreign material etc. outside gear-box can not enter box house simultaneously, namely require that the sealing configuration of gear-box can realize dual face seals.
Be: CN102009663A, in the patent documentation that name is called " gear case sealing structure of urban rail vehicle ", describe a kind of Bidirectional seal structure for urban rail vehicle gearbox in China Patent Publication No..In this technological scheme, be only provided with one circumferential seal gap, be therefore only applicable to the occasion that the motion speed such as city rail, subway are not high.Along with the raising of walking gear case motion speed, gear-box internal pressure also raises relatively, and the reliability of its sealing just can not meet the usage requirement of walking gear case.
Along with China's rail vehicle motion speed is constantly to middle and high speed development, also more and more higher to its reliability requirement, wherein walking gear case sealing system is then required that two way sealed is reliable, compact structure, be applicable to high speed operation requirement, be convenient to maintaining.
Summary of the invention
The object of the present invention is to provide that a kind of two way sealed is reliable, structure is simple and the sealing structure for traveling gearbox of railway vehicle of high speed traveling requirement can be met.
The technological scheme realizing above-mentioned purpose is: a kind of sealing structure for traveling gearbox of railway vehicle, comprise the bearing support be fixed on casing and the seal ring be fixed on axletree, described bearing support has the matching hole of installation shaft bearing outer-ring, also there is bearing support first sealing flange, bearing support the 4th sealing flange and bearing support the 5th sealing flange, the first labyrinth seal groove is formed between bearing support the 4th sealing flange and bearing support the 5th sealing flange, described seal ring has seal ring first flange, seal ring the 3rd flange and seal ring the 4th flange, the second labyrinth seal groove is formed between seal ring the 4th flange and seal ring ring body, bearing support first sealing flange of described bearing support is corresponding with seal ring first flange of seal ring and form the first circumferential seal gap, bearing support the 5th sealing flange of described bearing support is stretched in the second labyrinth seal groove of seal ring, seal ring the 4th flange of described seal ring is stretched and form labyrinth seal in the first labyrinth seal groove of bearing support simultaneously, described bearing support the 4th sealing flange and seal ring the 4th flange are oblique flange, labyrinth seal taper annular groove is formed between oblique flange, the first annular seal space is formed between described bearing support and seal ring, the spill port communicated with box house is provided with bottom first annular seal space, described bearing support also has bearing support second sealing flange, bearing support the 3rd sealing flange, described seal ring also has seal ring second flange, bearing support second sealing flange of described bearing support is corresponding with seal ring second flange of seal ring and form second week to seal clearance, bearing support the 3rd sealing flange of described bearing support is corresponding with seal ring the 3rd flange of seal ring and form the 3rd circumferential seal gap, bearing support second sealing flange of described bearing support, seal ring second flange of bearing support the 3rd sealing flange and seal ring, the second annular seal space is surrounded between seal ring the 3rd flange, described bearing support the 4th sealing flange top has radial protrusion, oil trap is formed between radial protrusion and bearing support the 4th sealing flange outer side wall, described bearing support the 3rd sealing flange top has axial projection, bearing support the 3rd sealing flange of described bearing support, bearing support the 4th sealing flange, the 3rd annular seal space is surrounded between seal ring the 3rd flange of bearing support end wall and seal ring, described second annular seal space, all communicate with spill port bottom 3rd annular seal space, the outside of described bearing support is fixed with end cap, stuffing box gland is equipped with in the corresponding position described axletree being positioned at end cap also fixed cover, outside framework oil seal is provided with between end cap and stuffing box gland, outside framework oil seal and stuffing box gland form contact seal.
Successively decreasing successively to the diameter in seal clearance and the 3rd circumferential seal gap in the first described circumferential seal gap, second week, forms stepped shaft sealing configuration.
Bearing support first sealing flange of described bearing support has some circumferential decompressing grooves on the corresponding side face of seal ring first flange of seal ring.
Described end cap has radial oil hole and the hole wall of the center hole of end cap has a circumference deposit fat groove.
The maximum outside diameter of described seal ring is less than the minimum diameter of the bearing outer ring be arranged in the matching hole of 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, therefore can effectively prevent oil from directly entering in labyrinth seal, but flow in the 3rd annular seal space; Because bearing support the 3rd sealing flange top has axial projection, therefore, it is possible to better oil is accommodated in the 3rd annular seal space; Because described bearing support the 4th sealing flange and seal ring the 4th flange are oblique flange, between oblique flange, form labyrinth seal taper annular groove, utilize conical surface pump oil principle, make oil be difficult to enter in labyrinth seal groove, add the effect of labyrinth seal; Due to the fluid decompression step by step that the first annular seal space, the second annular seal space and the 3rd annular seal space that are formed between bearing support and seal ring overflow inside, fluid is flowed at the bottom of chamber along chamber wall, box house is flowed back to by spill port, by 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, improve sealing effect; Due to axletree relevant position also fixed cover stuffing box gland is housed, outside framework oil seal is provided with between end cap and stuffing box gland, outside framework oil seal and stuffing box gland form contact seal, therefore, can prevent outside rainwater, dust etc. from invading box house, by adopting above-mentioned sealing configuration, achieve the dual face seals that gear-box rotates breakthrough part position under middle and high fast operating mode, sealing effect is reliable; Because the first circumferential seal gap, second week successively decrease successively to the diameter in seal clearance and the 3rd circumferential seal gap, the stepped shaft sealing configuration of formation, adds mist of oil gradually and to leak required pressure; Due to the corresponding end-faces of bearing support first sealing flange of described bearing support and seal ring first flange of seal ring having some circumferential decompressing grooves, therefore can increase the draining resistance in the first circumferential seal gap, strengthen the sealing effect in the first circumferential seal gap; Owing to described end cap having oil hole and depositing fat groove, communicate with outside framework oil seal mounting groove, regularly by oil hole grease up, between outside framework oil seal and stuffing box gland, form grease lubrication, reduce friction loss, prevent foreign matter from entering in mounting groove simultaneously; Maximum outside diameter due to described seal ring is less than the minimum diameter of the bearing outer ring be arranged in the matching hole of bearing support, and therefore sealing configuration is easy for installation.The extreme pressure lubricant that the present invention can make vehicle produce under high speed operating mode through three circumferential seal gaps, road, the shutoff of labyrinth seal and outside framework oil seal, form multiple-sealed guarantee, sealing effect is reliable.In addition, this present invention also has the feature of simple, the low wearing and tearing of structure, easy care.
Accompanying drawing explanation
Fig. 1 is the structural representation of sealing structure for traveling gearbox of railway vehicle of the present invention;
Fig. 2 is the I portion enlarged view in Fig. 1.
Embodiment
The present invention is further detailed explanation for the embodiment provided below in conjunction with accompanying drawing.
As Fig. 1, shown in 2, a kind of sealing structure for traveling gearbox of railway vehicle, comprise the bearing support 1 be fixed on casing 15 and the seal ring 4 be fixed on axletree 16, described bearing support 1 has the matching hole of installation shaft bearing outer-ring, also there is bearing support first sealing flange 1-1, bearing support the 4th sealing flange 1-4 and bearing support the 5th sealing flange 1-5, the first labyrinth seal groove 6 is formed between bearing support the 4th sealing flange 1-4 and bearing support the 5th sealing flange 1-5, described 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, the second labyrinth seal groove 7 is formed between seal ring the 4th flange 4-4 and seal ring 4 ring body, the bearing support first sealing flange 1-1 of described 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, bearing support the 5th sealing flange 1-5 of described bearing support 1 stretches in the second labyrinth seal groove 7 of seal ring 4, seal ring the 4th flange 4-4 of described seal ring 4 stretches and form labyrinth seal in the first labyrinth seal groove 6 of bearing support 1 simultaneously, described bearing support the 4th sealing flange 1-4 and seal ring the 4th flange 4-4 is oblique flange, labyrinth seal taper annular groove 18 is formed between oblique flange, the first annular seal space 9 is formed between described bearing support 1 and seal ring 4, the spill port 12 communicated with casing 15 inside is provided with bottom first annular seal space 9, described bearing support 1 also has bearing support second sealing flange 1-2, bearing support the 3rd sealing flange 1-3, described seal ring 4 also has seal ring second flange 4-2, the bearing support second sealing flange 1-2 of described bearing support 1 is corresponding with the seal ring second flange 4-2 of seal ring 4 and form second week to seal clearance 8-2, bearing support the 3rd sealing flange 1-3 of described 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, the bearing support second sealing flange 1-2 of described bearing support 1, the seal ring second flange 4-2 of bearing support the 3rd sealing flange 1-3 and seal ring 4, the second annular seal space 10 is surrounded between seal ring the 3rd flange 4-3, described bearing support the 4th sealing flange 1-4 top has radial protrusion 19, oil trap 20 is formed between radial protrusion 19 and bearing support the 4th sealing flange 1-4 outer side wall, described bearing support the 3rd sealing flange 1-3 top has axial projection 21, bearing support the 3rd sealing flange 1-3 of described bearing support 1, bearing support the 4th sealing flange 1-4, the 3rd annular seal space 11 is surrounded between seal ring the 3rd flange 4-3 of bearing support end wall 1-6 and seal ring 4, described second annular seal space 10, all communicate with spill port 12 bottom 3rd annular seal space 11, the outside of described bearing support 1 is fixed with end cap 2, stuffing box gland 5 is equipped with in the corresponding position described axletree 16 being positioned at end cap 2 also fixed cover, outside framework oil seal 3 is provided with between end cap 2 and stuffing box gland 5, outside framework oil seal 3 and stuffing box gland 5 form contact seal.
As shown in Figure 2, in order to the stepped shaft sealing configuration, further the enhanced leaktightness effect that are formed, the first described circumferential seal gap 8-1, second week successively decrease successively to the diameter of seal clearance 8-2 and the 3rd circumferential seal gap 8-3, form 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, the bearing support first sealing flange 1-1 of described bearing support 1 has some circumferential decompressing grooves 13 on the corresponding side face of the seal ring first flange 4-1 of seal ring 4.
As shown in Figure 1, 2, for the ease of note lubricating grease, described end cap 2 has radial oil hole 14 and the hole wall of the center hole of end cap 2 has a circumference deposit fat groove 22.Regularly can pass through oil hole 14 grease up, 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 described seal ring 4 is less than the minimum diameter of bearing 17 outer ring in the matching hole being arranged on bearing support 1.
As shown in Figure 1, stuffing box gland 5 has the material of certain degree of hardness and wear resistance to make, and smooth surface.
Claims (5)
1. a sealing structure for traveling gearbox of railway vehicle, comprise the bearing support (1) be fixed on casing (15) and the seal ring (4) be fixed on axletree (16), described bearing support (1) has the matching hole of installation shaft bearing outer-ring, also there is bearing support first sealing flange (1-1), bearing support the 4th sealing flange (1-4) and bearing support the 5th sealing flange (1-5), the first labyrinth seal groove (6) is formed between bearing support the 4th sealing flange (1-4) and bearing support the 5th sealing flange (1-5), described 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), the second labyrinth seal groove (7) is formed between seal ring the 4th flange (4-4) and seal ring (4) ring body, bearing support first sealing flange (1-1) of described 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), the bearing support the 5th sealing flange (1-5) of described bearing support (1) is stretched in the second labyrinth seal groove (7) of seal ring (4), the seal ring the 4th flange (4-4) of described seal ring (4) is stretched and form labyrinth seal in the first labyrinth seal groove (6) of bearing support (1) simultaneously, described bearing support the 4th sealing flange (1-4) and seal ring the 4th flange (4-4) are oblique flange, labyrinth seal taper annular groove (18) is formed between oblique flange, the first annular seal space (9) is formed between described bearing support (1) and seal ring (4), first annular seal space (9) bottom is provided with the spill port (12) communicated with casing (15) inside, it is characterized in that:
A, described bearing support (1) also have bearing support second sealing flange (1-2), bearing support the 3rd sealing flange (1-3),
B, described seal ring (4) also have seal ring second flange (4-2),
Bearing support second sealing flange (1-2) of d, described bearing support (1) is corresponding with seal ring second flange (4-2) of seal ring (4) and form second week to seal clearance (8-2),
The bearing support the 3rd sealing flange (1-3) of e, described bearing support (1) is corresponding with the seal ring the 3rd flange (4-3) of seal ring (4) and form the 3rd circumferential seal gap (8-3),
The second annular seal space (10) is surrounded between seal ring second flange (4-2) of bearing support second sealing flange (1-2) of f, described bearing support (1), bearing support the 3rd sealing flange (1-3) and seal ring (4), seal ring the 3rd flange (4-3)
G, described bearing support the 4th sealing flange (1-4) top have radial protrusion (19), oil trap (20) is formed between radial protrusion (19) and bearing support the 4th sealing flange (1-4) outer side wall, described bearing support the 3rd sealing flange (1-3) top has axial projection (21)
The 3rd annular seal space (11) is surrounded between the seal ring the 3rd flange (4-3) of the bearing support the 3rd sealing flange (1-3) of h, described bearing support (1), bearing support the 4th sealing flange (1-4), bearing support end wall (1-6) and seal ring (4),
I, described second annular seal space (10), the 3rd annular seal space (11) bottom all communicates with spill port (12),
The outside of j, described bearing support (1) is fixed with end cap (2), stuffing box gland (5) is equipped with in the corresponding position described axletree (16) being positioned at end cap (2) also fixed cover, be provided with outside framework oil seal (3) between end cap (2) and stuffing box gland (5), outside framework oil seal (3) and stuffing box gland (5) form contact seal.
2. sealing structure for traveling gearbox of railway vehicle according to claim 1, it is characterized in that: successively decrease successively to the diameter in seal clearance (8-2) and the 3rd circumferential seal gap (8-3) in the first described circumferential seal gap (8-1), second week, form stepped shaft sealing configuration.
3. sealing structure for traveling gearbox of railway vehicle according to claim 1, is characterized in that: bearing support first sealing flange (1-1) of described bearing support (1) has some circumferential decompressing grooves (13) on the corresponding side face of seal ring first flange (4-1) of seal ring (4).
4. sealing structure for traveling gearbox of railway vehicle according to claim 1, is characterized in that: described end cap (2) has radial oil hole (14) and the hole wall of the center hole of end cap (2) has a circumference deposit fat groove (22).
5. sealing structure for traveling gearbox of railway vehicle according to claim 1, is characterized in that: the maximum outside diameter of described seal ring (4) is less than the minimum diameter of bearing (17) outer ring in the matching hole being arranged on bearing support (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110252464.8A CN102954194B (en) | 2011-08-30 | 2011-08-30 | Railway vehicle traveling gearbox sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110252464.8A CN102954194B (en) | 2011-08-30 | 2011-08-30 | Railway vehicle traveling gearbox sealing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102954194A CN102954194A (en) | 2013-03-06 |
| CN102954194B true CN102954194B (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110252464.8A Active CN102954194B (en) | 2011-08-30 | 2011-08-30 | Railway vehicle traveling gearbox sealing structure |
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Address after: 213022, Changzhou, Jiangsu New District hi tech park, building B, block Co-patentee after: CRRC QISHUYAN INSTITUTE Co.,Ltd. Patentee after: CHANGZHOU RUITAI ENGINEERING MACHINERY Co.,Ltd. Address before: 213022, Changzhou, Jiangsu New District hi tech park, building B, block Co-patentee before: CSR QISHUYAN INSTITUTE Co.,Ltd. Patentee before: CHANGZHOU RUITAI ENGINEERING MACHINERY Co.,Ltd. |
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Address after: 213022, building B, building 2, Xinbei hi tech park, Xinbei District, Jiangsu, Changzhou Patentee after: Changzhou CRRC Ruitai Equipment Technology Co.,Ltd. Patentee after: CRRC QISHUYAN INSTITUTE Co.,Ltd. Address before: 213022, building B, building 2, Xinbei hi tech park, Xinbei District, Jiangsu, Changzhou Patentee before: CHANGZHOU RUITAI ENGINEERING MACHINERY Co.,Ltd. Patentee before: CRRC QISHUYAN INSTITUTE Co.,Ltd. |
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Address after: 213022, building B, building 2, Xinbei hi tech park, Xinbei District, Jiangsu, Changzhou Patentee after: Changzhou CRRC Ruitai Equipment Technology Co.,Ltd. Country or region after: China Patentee after: CRRC Qishuyan Locomotive and Rolling Stock Technology Research Institute Co.,Ltd. Address before: 213022, building B, building 2, Xinbei hi tech park, Xinbei District, Jiangsu, Changzhou Patentee before: Changzhou CRRC Ruitai Equipment Technology Co.,Ltd. Country or region before: China Patentee before: CRRC QISHUYAN INSTITUTE Co.,Ltd. |