CN104773033A - Railway wagon and axle thereof - Google Patents
Railway wagon and axle thereof Download PDFInfo
- Publication number
- CN104773033A CN104773033A CN201510166317.7A CN201510166317A CN104773033A CN 104773033 A CN104773033 A CN 104773033A CN 201510166317 A CN201510166317 A CN 201510166317A CN 104773033 A CN104773033 A CN 104773033A
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- axletree
- cylindrical section
- axle
- bearing
- transition phase
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Abstract
The invention discloses an axle of a railway wagon. The axle comprises an axle body, wheel seats connected to two outer sides of the axle body in sequence, a dustproof plate seat and an axle neck, wherein the axle neck is connected with a bearing in a matching manner; the dustproof plate seat is provided with a cylindrical section and a transitional section in sequence from outside to inside; the cylindrical section is matched with a bearing rear bumper of the bearing, and the axial length of the cylindrical section is equal to that of a matching hole in the bearing rear bumper; the end surface of the transitional section is gradually increased to the wheel seats from the cylindrical section. By the adoption of the structure, the length of the cylindrical section is set to meet the minimum length required for matching with the bearing rear bumper on the premise that the total axial length of the dustproof plate seat is unchanged, and therefore the length of the transitional section is far larger than that of an existing circular-arc-shaped step. Compared with the prior art, the axle disclosed by the invention has the advantages that the stress between the dustproof plate seat and the wheel seats is reduced, the flexure strength between the dustproof plate seat and the wheel seats is enhanced, and the working reliability of the whole axle is improved. Besides, the invention also discloses the railway wagon applying the axle.
Description
Technical field
The present invention relates to rolling stock technical field, particularly relate to a kind of railway truck and axletree thereof.
Background technology
Lorry axle is the main load bearing element of vehicle, bears high-frequency alternating load, and its fatigue crack damage is directly connected to traffic safety, and therefore axletree is always the parts paid close attention in Rail car manufacture, utilization, maintenance.
Please refer to Fig. 1, Fig. 1 is the structural representation of a kind of axletree in prior art.
In the figure, axletree is Step Shaft, and comprise the axle body 1 ' at middle part, axle body 1 ' both sides are provided with wheel seat 2 ', dust guard seat 3 ' and axle journal 4 ' successively.Wherein wheel seat 2 ' radius maximum, be the position that axletree coordinates with wheel, dust guard seat 3 ' is the central transition section of axle journal 4 ' and wheel seat 2 ', axle journal 4 ' is for installing bearing shell or the antifriction-bearing box of plain bearing, after the bearing of this bearing, shelves 100 ' are connected with the outer end of dust guard seat 3 ', this axle journal 4 ' bears the weight of vehicle, and carries live load, static weight.
In the course of the work, as shown in Figure 2, the force analysis figure that this figure is axletree shown in Fig. 1, axletree is subject at two axle journals 4 ' places power P1, the P2 that bearing is applied to axletree usually, is subject to wheel at two wheel seat 2 ' places simultaneously and is applied to power Q1, Q2 on axletree.Sidewinder by axletree and affect, P1>P2, Q1>Q2, therefore, it is possible to obtain the bending-moment diagram shown in Fig. 3.
From above-mentioned force analysis figure and bending-moment diagram, the bending strength of this axletree is uneven, wherein the bending strength of axle body 1 ' is obviously rich, and the weak load-bearing point of this axletree is the junction between dust guard seat 3 ' and wheel seat 2 ', although be provided with the circular arc 31 ' concentrated for reducing stress, the stress that this place is subject to comparatively other positions is still comparatively large, and cause bending strength poor, functional reliability is bad.
Please refer to Fig. 4, Fig. 4 is the structural representation of another kind of axletree in prior art.The cross-sectional plane of the axle body 1 ' of this axletree from inside to outside increases gradually, compared with the axletree shown in Fig. 1, although this axletree weakens the intensity of axle body 1 ' relatively, but on the whole, junction between dust guard seat 3 ' with wheel seat 2 ' is same is the bending strength thin spot of this axletree, there is same potential safety hazard.
In view of this, urgently further optimal design axletree of the prior art, to increase the bending strength of the thin spot of axletree, reduces the stress suffered by this position, improves the functional reliability of axletree.
Summary of the invention
Object of the present invention, for providing a kind of axletree of railway truck, to reduce the stress suffered by its weak part, strengthens its bending strength, improves the functional reliability of whole axletree.On this basis, another object of the present invention is for providing a kind of railway truck comprising above-mentioned axletree.
For solving the problems of the technologies described above, the invention provides a kind of axletree of railway truck, comprise axle body, be connected to wheel seat, dust guard seat and axle journal outside described axle body two successively, described journal engagement is connected with bearing; Described dust guard seat ecto-entad is provided with cylindrical section, transition phase successively, described cylindrical section coordinates with shelves after the bearing of described bearing, and the axial length of described cylindrical section equals the axial length of the mating holes of shelves after described bearing, the end face of described transition phase increases to described wheel seat gradually by described cylindrical section.
Adopt this structure, after bearing, the mating holes of shelves is cylindrical hole, therefore the cylindrical section of dust guard seat can be formed with it and closely cooperate, because the length of cylindrical section is identical with the length of mating holes, also namely the length of cylindrical section is meet the minimum length coordinating demand with shelves after bearing, compared with prior art, when dust guard seat total axial length is constant, the length of transition phase is much larger than the length of existing arc steps, that is, the most end face of this dust guard seat all increases, and transition phase is axially more close to the position of wheel seat, its end face is more close to the end face of wheel seat.Therefore, compared with prior art, the stress between dust guard seat and wheel seat reduces, and enhances the bending strength at this place, improves the functional reliability of whole axletree.
Preferably, the bus of described transition phase comprises the oblique line and curve that seamlessly transit, and described transition phase and described cylindrical section seamlessly transit.
Preferably, the bus of described transition phase comprises the first circular arc, the first oblique line and the second circular arc from outside to inside successively, and the bus of described cylindrical section is through the tangent line of described first circular arc, described first oblique line is the outside common tangent of described first circular arc, described second circular arc.
Preferably, the bus of described transition phase is oblique line.
Preferably, the bus of described transition phase is parabola, and the bus of described cylindrical section is described parabolical tangent line.
Preferably, shelves interference fit after described cylindrical section and described bearing.
Preferably, the diameter of described axle body increases from inside to outside gradually.
The present invention also provides a kind of railway truck, comprises axletree, and the wheel be connected with described axletree is right; Described axletree adopts axletree as above.
Because above-mentioned axletree has as above technique effect, therefore, the railway truck applying this axletree also should have corresponding technique effect, does not repeat them here.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of axletree in prior art;
The force analysis figure that Fig. 2 is axletree shown in Fig. 1;
Fig. 3 is the bending-moment diagram of axletree shown in Fig. 2;
Fig. 4 is the structural representation of another kind of axletree in prior art;
Fig. 5 is the structural representation of a kind of detailed description of the invention of the axletree of a kind of railway truck provided by the present invention;
Fig. 6 is the structural representation of the another kind of detailed description of the invention of the axletree of a kind of railway truck provided by the present invention;
Fig. 7 is the structural representation of another detailed description of the invention of the axletree of a kind of railway truck provided by the present invention;
Fig. 8 is the structural representation of the 4th kind of detailed description of the invention of the axletree of a kind of railway truck provided by the present invention.
Wherein, the Reference numeral in Fig. 1 to Fig. 4 and the corresponding relation between component names are:
Axle body 1 ';
Wheel seat 2 ';
Dust guard seat 3 '; Circular arc 31 ';
Axle journal 4 ';
Shelves 100 ' after bearing;
Reference numeral shown in Fig. 5 to Fig. 8 and the corresponding relation between component names are:
Axle body 1;
Wheel seat 2;
Dust guard seat 3; Cylindrical section 31; Transition phase 32; First circular arc 321; First oblique line 322; Second circular arc 323;
Axle journal 4;
Shelves 100 after bearing.
Detailed description of the invention
Core of the present invention is for providing a kind of axletree of railway truck, and this axletree reduces its weak part stress suffered at work by arranging longer transition phase on dust guard seat, strengthens its bending strength, improves the functional reliability of whole axletree.On this basis, another core of the present invention is for providing a kind of railway truck comprising above-mentioned axletree.
In order to make those skilled in the art understand technical scheme of the present invention better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.It should be noted that, the direction at left and right two ends is pointed at the middle part that the noun of locality " outward " occurred herein refers to Fig. 5, and the direction at middle part is pointed at " interior " left and right two ends referred in Fig. 5; Should be appreciated that the appearance of these nouns of locality is set up for benchmark with the custom call of those skilled in the art and accompanying drawing, their appearance should not affect protection scope of the present invention.
Please refer to Fig. 5, Fig. 5 is the structural representation of a kind of detailed description of the invention of the axletree of railway truck provided by the present invention.
In a kind of detailed description of the invention, as shown in Figure 5, the present invention carries a kind of axletree of railway truck, comprise axle body 1, the wheel seat 2 being connected to described axle body 1 liang of outside successively, dust guard seat 3 and axle journal 4, described axle journal 4 is connected with bearing, and described dust guard seat 3 ecto-entad is provided with cylindrical section 31, transition phase 32 successively; Described cylindrical section 31 coordinates with shelves 100 after the bearing of described bearing, and the axial length of described cylindrical section 31 equals the axial length of the mating holes of shelves 100 after described bearing, and the end face of described transition phase 32 increases to described wheel seat 2 gradually by described cylindrical section 31.
Adopt this structure, after bearing, the mating holes of shelves 100 is cylindrical hole, therefore the cylindrical section 31 of dust guard seat 3 can be formed with it and closely cooperate, because the length of cylindrical section 31 is identical with the length of mating holes, also namely the length of cylindrical section 31 is meet the minimum length coordinating demand with shelves after bearing 100, compared with prior art, when dust guard seat 3 total axial length is constant, the length of transition phase 32 is much larger than the length of existing arc steps, that is, the most end face of this dust guard seat 3 all increases, and transition phase 32 is axially more close to the position of wheel seat 2, its end face is more close to the end face of wheel seat 2.Therefore, compared with prior art, the stress between dust guard seat 3 and wheel seat 2 reduces, and enhances the bending strength at this place, improves the functional reliability of whole axletree.
The shape of above-mentioned transition phase 32 can have varied.
As shown in Figure 5, the bus of above-mentioned transition phase 32 comprises the oblique line and curve that seamlessly transit, and described transition phase 32 and described cylindrical section 31 seamlessly transit.
Adopt this structure, transition phase 32 and cylindrical section 31 seamlessly transit can be avoided producing flex point therebetween and under stressing conditions, produce stress concentrate, and similarly, seamlessly transits and transition phase 32 can be avoided to produce stress concentrate between oblique line and curve.Therefore, this structure avoids the generation of new weak part while ensureing the bending strength of enhancing dust guard seat 3, ensures the working stability of axletree further.
In concrete scheme, as shown in Figure 5, the bus of above-mentioned transition phase 32 can comprise the first circular arc 321, first oblique line 322 and the second circular arc 323 from outside to inside successively, and the bus of cylindrical section 31 is through the tangent line of the first circular arc 321, the first oblique line 322 is the outside common tangent of the first circular arc 321, second circular arc 323.
Like this, both achieved the first circular arc 321 seamlessly transitting relative to cylindrical section 31, also achieved seamlessly transitting in transition phase 32 simultaneously, and whole dust guard seat 3 end face had from outside to inside been increased gradually and avoids the weak part producing stress and concentrate.
Can expect, the bus of above-mentioned transition phase 32, not only for the structure of an oblique line and two sections of circular arcs, can also arrange other numbers, the oblique line of other shapes and curve.Such as, the combination of two sections of oblique lines and two sections of circular arcs, or the combination of a section of circular arc, one section of oblique line and one section of elliptic arc, etc.
Certainly, above-mentioned transition phase 32 is not also only for the array mode of oblique line and curve.
In another kind of detailed description of the invention, as shown in Figure 6, Fig. 6 is the structural representation of the another kind of detailed description of the invention of the axletree of a kind of railway truck provided by the present invention, and the bus of above-mentioned transition phase 32 is oblique line.
Adopt this structure, make the end face increase of transition phase 32 more, the functional reliability of axletree can be strengthened further, and this mode has structure feature simple, easy to process.
In another kind of concrete scheme, as shown in Figure 7, Fig. 7 is the structural representation of another detailed description of the invention of the axletree of a kind of railway truck provided by the present invention, and the bus of above-mentioned transition phase 32 is parabola, and the bus of cylindrical section 31 is this parabolical tangent line.
Adopt this structure, equally can the end face strengthening dust guard seat 3, strengthen dust guard seat 3 bending strength while, realize seamlessly transitting of transition phase 32 and cylindrical section 31, thus avoid the appearance that stress is concentrated.This parabolical shape also can be varied, such as, can be specially an oval part, or be a hyp part, or general parabola.
In another kind of detailed description of the invention, as shown in Figure 5, shelves 100 interference fit after cylindrical section 31 and the described bearing of above-mentioned dust guard seat 3.
Stable cooperation both interference fit can realize, and fitting process is simple, also makes the course of processing of shelves 100 after bearing, dust guard seat 3 comparatively simple.Can expect, after cylindrical section 31 and bearing, shelves 100 are not only for interference fit, such as, also can arrange radial tapped bore at cylindrical section 31, adopt the threaded fasteners through shelves after bearing 100 to be connected in tapped bore, the stable cooperation both realizing equally.
In another kind of concrete scheme, as shown in Figure 8, Fig. 8 is the structural representation of the 4th kind of detailed description of the invention of the axletree of a kind of railway truck provided by the present invention, and the diameter of the axle body 1 of this axletree increases from inside to outside gradually.
The moment of flexure of bearing due to the axle body 1 of axletree is less, therefore, if axle body 1 is set to cylinder, its bending strength is too much rich, after adopting above-mentioned taper axle body 1, the bending strength of axle body 1 can be made suitably to reduce but be enough to ensure that bending strength is enough, and reducing the weight of axletree, reduce the raw MAT'L that axletree uses, reduce the production of axletree, tooling cost.
In addition, the present invention also provides a kind of railway truck, comprises axletree, and the wheel be connected with described axletree is right; Described axletree adopts axletree as above.
Because above-mentioned axletree has technique effect as above, therefore, the technique effect that the railway truck applying this axletree also should be identical, does not repeat them here.
Above a kind of railway truck provided by the present invention and axletree thereof are described in detail.Apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (8)
1. the axletree of a railway truck, comprise axle body (1), be connected to wheel seat (2), dust guard seat (3) and axle journal (4) outside described axle body (1) two successively, described axle journal (4) is connected with bearing; It is characterized in that, described dust guard seat (3) ecto-entad is provided with cylindrical section (31), transition phase (32) successively, described cylindrical section (31) coordinates with shelves (100) after the bearing of described bearing, and the axial length of described cylindrical section (31) equals the axial length of the mating holes of shelves (100) after described bearing, the end face of described transition phase (32) increases to described wheel seat (2) gradually by described cylindrical section (31).
2. the axletree of railway truck according to claim 1, it is characterized in that, the bus of described transition phase (32) comprises the oblique line and curve that seamlessly transit, and described transition phase (32) and described cylindrical section (31) seamlessly transit.
3. the axletree of railway truck according to claim 2, it is characterized in that, the bus of described transition phase (32) comprises the first circular arc (321), the first oblique line (322) and the second circular arc (323) from outside to inside successively, and the bus of described cylindrical section (31) is through the tangent line of described first circular arc (321), described first oblique line (322) is the outside common tangent of described first circular arc (321), described second circular arc (323).
4. the axletree of railway truck according to claim 1, is characterized in that, the bus of described transition phase (32) is oblique line.
5. the axletree of railway truck according to claim 1, is characterized in that, the bus of described transition phase (32) is parabola, and the bus of described cylindrical section (31) is described parabolical tangent line.
6. the axletree of the railway truck according to any one of claim 1-5, is characterized in that, shelves (100) interference fit after described cylindrical section (31) and described bearing.
7. the axletree of the railway truck according to any one of claim 1-5, is characterized in that, the diameter of described axle body (1) increases from inside to outside gradually.
8. a railway truck, comprises axletree, and the wheel be connected with described axletree is right; It is characterized in that, described axletree adopts the axletree as described in any one of claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510166317.7A CN104773033A (en) | 2015-04-09 | 2015-04-09 | Railway wagon and axle thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510166317.7A CN104773033A (en) | 2015-04-09 | 2015-04-09 | Railway wagon and axle thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104773033A true CN104773033A (en) | 2015-07-15 |
Family
ID=53614934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510166317.7A Pending CN104773033A (en) | 2015-04-09 | 2015-04-09 | Railway wagon and axle thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104773033A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109185327A (en) * | 2018-09-14 | 2019-01-11 | 汉中天行智能飞行器有限责任公司 | A kind of hyperbola multidiameter shaft |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3802352A (en) * | 1972-07-13 | 1974-04-09 | Timken Co | Railway truck wheel and axle set |
| US4575145A (en) * | 1984-12-13 | 1986-03-11 | Wolfram Norman E | Differential axle for railroad car |
| CN2846867Y (en) * | 2005-08-10 | 2006-12-13 | 顾和生 | Shaft neck root transition structure of vehicle shaft |
| CN101512171A (en) * | 2006-08-31 | 2009-08-19 | 日本精工株式会社 | Wheel supporting rolling bearing unit |
| CN201696456U (en) * | 2010-05-21 | 2011-01-05 | 南车株洲电力机车有限公司 | Alloy steel hollow 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 |
| CN204506348U (en) * | 2015-04-09 | 2015-07-29 | 齐齐哈尔轨道交通装备有限责任公司 | A kind of railway truck and axletree thereof |
-
2015
- 2015-04-09 CN CN201510166317.7A patent/CN104773033A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3802352A (en) * | 1972-07-13 | 1974-04-09 | Timken Co | Railway truck wheel and axle set |
| US4575145A (en) * | 1984-12-13 | 1986-03-11 | Wolfram Norman E | Differential axle for railroad car |
| CN2846867Y (en) * | 2005-08-10 | 2006-12-13 | 顾和生 | Shaft neck root transition structure of vehicle shaft |
| CN101512171A (en) * | 2006-08-31 | 2009-08-19 | 日本精工株式会社 | Wheel supporting rolling bearing unit |
| CN201696456U (en) * | 2010-05-21 | 2011-01-05 | 南车株洲电力机车有限公司 | Alloy steel hollow 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 |
| CN204506348U (en) * | 2015-04-09 | 2015-07-29 | 齐齐哈尔轨道交通装备有限责任公司 | A kind of railway truck and axletree thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109185327A (en) * | 2018-09-14 | 2019-01-11 | 汉中天行智能飞行器有限责任公司 | A kind of hyperbola multidiameter shaft |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 161002 Qigihar City, Heilongjiang province Tiefeng District Plant Road No. 36 Applicant after: CRRC QIQIHAR VEHICLE CO., LTD. Address before: 161002 Qigihar City, Heilongjiang province Tiefeng District Plant Road No. 36 Applicant before: Qiqihar Rail Traffic Equipment Co., Ltd. |
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| COR | Change of bibliographic data | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150715 |
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| RJ01 | Rejection of invention patent application after publication |