CN205044434U - Low -floor is motor car axletree for bogie - Google Patents
Low -floor is motor car axletree for bogie Download PDFInfo
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- CN205044434U CN205044434U CN201520741505.3U CN201520741505U CN205044434U CN 205044434 U CN205044434 U CN 205044434U CN 201520741505 U CN201520741505 U CN 201520741505U CN 205044434 U CN205044434 U CN 205044434U
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- axle
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- axle body
- bearing seat
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Abstract
The utility model discloses a low -floor is motor car axletree for bogie, set up the wheel seat at the axle body both ends, every including axle body and symmetry one side that the wheel seat deviates from the axle body respectively is provided with an axle journal, every one side that the wheel seat is close to the axle body respectively is provided with a bearing frame, all is provided with ring groove on the outer circumference of every bearing frame, one of them axle journal is provided with gear box installation interface, and another axle journal is provided with brake disc installation interface. After adopting above -mentioned structure, can save space, make the high of vehicle of low -floor further reduce, vehicle operation is more safe and comfortable, can also improve the anti -fatigue ability of bearing frame by a wide margin, prolongs the life of axletree. In addition, can also reduce pulling among the wheel press -fitting process, move back a round convenience, and the pressure equipment rear wheel be good to neutrality.
Description
Technical field
The utility model 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.
Utility model content
The technical problems to be solved in the utility model 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 utility model 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 adopted in the utility model 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 utility model 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 utility model;
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 utility model 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 utility model is described in further detail.
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 preferred implementation of the present utility model in detail; but; the utility model is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present utility model; can carry out multiple equivalents to the technical solution of the utility model, these equivalents all belong to protection domain of the present utility model.
Claims (4)
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520741505.3U CN205044434U (en) | 2015-09-24 | 2015-09-24 | Low -floor is motor car axletree for bogie |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520741505.3U CN205044434U (en) | 2015-09-24 | 2015-09-24 | Low -floor is motor car axletree for bogie |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205044434U true CN205044434U (en) | 2016-02-24 |
Family
ID=55338043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520741505.3U Active CN205044434U (en) | 2015-09-24 | 2015-09-24 | Low -floor is motor car axletree for bogie |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205044434U (en) |
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2015
- 2015-09-24 CN CN201520741505.3U patent/CN205044434U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 210031 Nanjing province high tech Development Zone, Taishan Park, North Pearl Road, No. 68 Patentee after: CRRC NANJING PUZHEN CO., LTD. Address before: 210031 Nanjing province high tech Industrial Development Zone, Taishan Park, North Pearl Road, No. 68 Patentee before: CSR NANJING PUZHEN Vehicles Co., Ltd. |