CN105196794A - Motor car axle for low floor bogie - Google Patents
Motor car axle for low floor bogie Download PDFInfo
- Publication number
- CN105196794A CN105196794A CN201510611366.7A CN201510611366A CN105196794A CN 105196794 A CN105196794 A CN 105196794A CN 201510611366 A CN201510611366 A CN 201510611366A CN 105196794 A CN105196794 A CN 105196794A
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- China
- Prior art keywords
- axle
- bearing seat
- low
- low floor
- rail car
- 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.)
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Abstract
The invention discloses a motor car axle for a low floor bogie, which comprises an axle body and a wheel seat which is symmetrically arranged on the two ends of the axle body, two axle necks are respectively arranged on one side of each wheel sat depart from the axle body, two bearing seats are respectively arranged on one side of the wheel seat close to the axle body, annular grooves are all arranged on the external circumference of each bearing seat, a gear box installation interface is arranged on one of the axle necks, and another one axle neck is provided with a brake disc installation interface. The motor car axle for the low floor bogie can save space, can further reduce height of a low floor car, enables the low floor car to more safely and comfortably run, further can greatly improve anti-fatigue ability of the bearing seat, and prolongs service. Furthermore, the motor car axle for the low floor bogie further can reduce strain during the press assembly process of wheels, can conveniently push back the wheels, and is excellent in centering of the wheels after being pressed to assemble.
Description
Technical field
The present invention relates to a kind of rail car axle, particularly a kind of low-floor bogie rail car axle.
Background technology
Low floor vehicle bogie truck rail car axle, is the core part of low floor vehicle, has vital function to support vehicles safe in operation.
Low-floor bogie rail car axle takes charge of main construction according to me---low floor tramway train project, and a kind of Novel axle of R & D design.
Because current domestic low floor circuit is less, also less to the research of low floor vehicle kernel component.Therefore be necessary to carry out in-depth study to axletree.This patent, by carrying out in-depth study to the feature of low floor vehicle, has considered the operation characteristic of low floor vehicle, devises the rail car axle meeting and use and require.
Rail car axle of the prior art, has following deficiency:
1. the bearing seat anti-fatigue performance of existing rail car axle is poor, and because the line condition of low floor vehicle is poor, bearing seat is badly stressed, easily there is endurance crack in bearing seat, the endurance crack of bearing seat, likely will cause bearing seat place to be ruptured, jeopardize the traffic safety of vehicle.
2. the gear case of existing axletree and brake disc seat are installed in the axle body part of axletree, thus make the axle body installing space of low floor axletree limited, and can interfere with framework, framework raises apart from the height of rail level.
3. in prior art, be cylindrical fit between wheel seat and wheel, press-fit in process, easily occur pulling, and move back wheel inconvenience, press-fit wheel and also easily occur die misalignment.
Summary of the invention
The technical problem to be solved in the present invention is for above-mentioned the deficiencies in the prior art, and a kind of low-floor bogie rail car axle is provided, this low-floor bogie rail car axle can save space, the height of the vehicle of low floor can be reduced further, vehicle operating is safer and comfortable, significantly can also improve the anti-fatigue ability of bearing seat, extend the service life of axletree.
In addition, the present invention also provides a kind of low-floor bogie rail car axle, and this low-floor bogie rail car axle can reduce pulling in press mounting of car wheel process, move back wheel conveniently, and the centering press-fiting rear wheel is good.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of low-floor bogie rail car axle, comprise axle body and the wheel seat being symmetricly set on axle body two ends, the side that each described wheel seat deviates from axle body is respectively provided with an axle journal, each described wheel seat is respectively provided with a bearing seat near the side of axle body, and the excircle of each bearing seat is provided with annular recess; One of them axle journal is provided with gear case mounting interface, and another axle journal is provided with brake disc mounting interface.
The external peripheral surface of each described bearing seat is provided with one deck sprayed molybdenum layer.
Each described bearing seat is the frustum reduced gradually to axle journal orient diameter.
Described axletree adopts EA4T material.
After described axletree machines, ultrasonic flaw detection or magnetic particle testing need be carried out.
After the present invention adopts said structure, there is following beneficial effect:
1. gear case and brake disc are connected with the axle journal of side respectively, can save space, and the height of the vehicle of low floor can be reduced further, and vehicle operating is safer and comfortable.
2. the design of the design of bearing seat upper groove, and sprayed molybdenum layer, all significantly can improve the anti-fatigue ability of bearing seat, and extend the service life of axletree, vehicle operating is safer.In addition, through constantly contacting, inside bearing seat, damage can be caused to axle journal, producing wearing and tearing, above-mentioned groove, the frictionally damage to axle journal inside bearing seat can be avoided.
3. above-mentioned bearing seat designs for frustum, can reduce pulling in press mounting of car wheel process, move back wheel conveniently, and the centering press-fiting rear wheel is good.
Accompanying drawing explanation
Fig. 1 shows the structural representation of a kind of low-floor bogie rail car axle of the present invention;
Fig. 2 shows the section enlarged diagram in Tu1Zhong A district;
Fig. 3 shows the enlarged diagram in Tu1Zhong B district;
Fig. 4 shows the section enlarged diagram in Tu1Zhong C district;
Fig. 5 shows the structural representation in the present invention after a kind of low-floor bogie rail car axle assembling.
Wherein have:
1. axle body;
2. axle journal;
21. gear case mounting interfaces;
22. brake disc mounting interfaces;
3. wheel seat;
4. bearing seat; 41. grooves;
5. wheel;
6. gear case;
7. axle box device;
8. brake disc.
Detailed description of the invention
Below in conjunction with accompanying drawing and concrete better embodiment, the present invention is further detailed explanation.
As shown in Figure 1, a kind of low-floor bogie rail car axle, comprises axle body 1, two axle journals 2, two wheel seats 3 and two bearing seats 4.
Above-mentioned axle body 1 is preferably cylinder, is preferably provided with two the first frustums at the two ends of axle body 1, and each first frustum all increases gradually to the orient diameter deviating from axle body 1.
Two wheel seats 3 are symmetricly set on the two ends of axle body 1.
The side that each wheel seat 3 deviates from axle body 1 is respectively provided with an axle journal 2.As shown in Figure 2 and Figure 5, one of them axle journal 2 is provided with gear case mounting interface 21, for being connected with gear case 6.As shown in Figure 4 and Figure 5, another axle journal 2 is provided with brake disc mounting interface 22, for being connected with brake disc 8.
Each wheel seat 3 is respectively provided with a bearing seat 4 near the side of axle body 1, the excircle of each bearing seat 4 is provided with annular recess 41 as shown in Figure 3.
Further, the frustum that all preferably reduces gradually to axle journal 2 orient diameter of each bearing seat 4.After bearing seat 4 is designed to frustum, wheel 5 can be reduced and press-fit pulling in process, move back wheel conveniently, and the centering press-fiting rear wheel 5 be good.
Further, the external peripheral surface of each bearing seat 4 is provided with one deck sprayed molybdenum layer, and also namely each bearing seat 4 need carry out sprayed molybdenum PROCESS FOR TREATMENT.
Further, described axletree adopts EA4T material.
Further, above-mentioned axletree need adopt quenching to add the Technology for Heating Processing of tempering, after heat treatment process completes, need carry out ultrasonic flaw detection or magnetic particle testing.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple equivalents to technical scheme of the present invention, these equivalents all belong to protection scope of the present invention.
Claims (5)
1. a low-floor bogie rail car axle, comprise axle body and the wheel seat being symmetricly set on axle body two ends, the side that each described wheel seat deviates from axle body is respectively provided with an axle journal, it is characterized in that: each described wheel seat is respectively provided with a bearing seat near the side of axle body, and the excircle of each bearing seat is provided with annular recess; One of them axle journal is provided with gear case mounting interface, and another axle journal is provided with brake disc mounting interface.
2. low-floor bogie rail car axle according to claim 1, is characterized in that: the external peripheral surface of each described bearing seat is provided with one deck sprayed molybdenum layer.
3. low-floor bogie rail car axle according to claim 1, is characterized in that: each described bearing seat is the frustum reduced gradually to axle journal orient diameter.
4. low-floor bogie rail car axle according to claim 1, is characterized in that: described axletree adopts EA4T material.
5. low-floor bogie rail car axle according to claim 1, is characterized in that: after described axletree machines, and need carry out ultrasonic flaw detection or magnetic particle testing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510611366.7A CN105196794A (en) | 2015-09-24 | 2015-09-24 | Motor car axle for low floor bogie |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510611366.7A CN105196794A (en) | 2015-09-24 | 2015-09-24 | Motor car axle for low floor bogie |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105196794A true CN105196794A (en) | 2015-12-30 |
Family
ID=54944901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510611366.7A Pending CN105196794A (en) | 2015-09-24 | 2015-09-24 | Motor car axle for low floor bogie |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105196794A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4575145A (en) * | 1984-12-13 | 1986-03-11 | Wolfram Norman E | Differential axle for railroad car |
| CN201530272U (en) * | 2009-11-11 | 2010-07-21 | 中国北车集团大同电力机车有限责任公司 | Locomotive wheel pair and axle structure thereof |
| CN102042299A (en) * | 2009-10-15 | 2011-05-04 | 中国北车集团大同电力机车有限责任公司 | Axle structure and method for resisting fretting fatigue of axle |
| CN102991273A (en) * | 2012-12-07 | 2013-03-27 | 长春轨道客车装备有限责任公司 | Car axle |
-
2015
- 2015-09-24 CN CN201510611366.7A patent/CN105196794A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4575145A (en) * | 1984-12-13 | 1986-03-11 | Wolfram Norman E | Differential axle for railroad car |
| CN102042299A (en) * | 2009-10-15 | 2011-05-04 | 中国北车集团大同电力机车有限责任公司 | Axle structure and method for resisting fretting fatigue of axle |
| CN201530272U (en) * | 2009-11-11 | 2010-07-21 | 中国北车集团大同电力机车有限责任公司 | Locomotive wheel pair and axle structure thereof |
| CN102991273A (en) * | 2012-12-07 | 2013-03-27 | 长春轨道客车装备有限责任公司 | Car axle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 210031 Nanjing province high tech Development Zone, Taishan Park, North Pearl Road, No. 68 Applicant after: CRRC NANJING PUZHEN CO., LTD. Address before: 210031 Nanjing province high tech Industrial Development Zone, Taishan Park, North Pearl Road, No. 68 Applicant before: CSR NANJING PUZHEN Vehicles Co., Ltd. |
|
| COR | Change of bibliographic data | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151230 |
|
| RJ01 | Rejection of invention patent application after publication |