CN219634910U - Locomotive axle and wheel set - Google Patents
Locomotive axle and wheel set Download PDFInfo
- Publication number
- CN219634910U CN219634910U CN202320620843.6U CN202320620843U CN219634910U CN 219634910 U CN219634910 U CN 219634910U CN 202320620843 U CN202320620843 U CN 202320620843U CN 219634910 U CN219634910 U CN 219634910U
- Authority
- CN
- China
- Prior art keywords
- axle
- locomotive
- transmission
- hollow shaft
- wheel
- 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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- 230000003137 locomotive effect Effects 0.000 title claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims description 46
- 239000000725 suspension Substances 0.000 abstract description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Abstract
The utility model discloses a locomotive axle and a wheel set, wherein the locomotive axle comprises a hollow shaft, the hollow shaft is provided with an axle hole extending along the length direction, two ends of the axle hole are respectively provided with an axle journal, the outer wall surface of the axle journal is provided with an axle box mounting part, and the end part of the outer wall surface of the hollow shaft is a wheel mounting part. The utility model effectively improves the torsional rigidity of the wheel set and reduces the torsional vibration amplitude of the wheel set on the premise of not increasing the primary suspension height, the axle box and the axle weight.
Description
Technical Field
The utility model belongs to the field of rail transit vehicles, and particularly relates to a locomotive axle and a locomotive wheel set.
Background
The locomotive has larger axle weight and higher transmission traction force, when the wheel track adhesive force exceeds the wheel track adhesive saturation limit, the creep force is reduced along with the increase of the creep rate, and the locomotive is easy to generate obvious adhesive slip self-excitation torsional vibration due to the negative slope characteristic of the creep force and the creep rate, as shown in figure 3.
When the wheel set generates stick-slip vibration, the wheel track adhesion utilization rate and the axle fatigue reliability are obviously reduced. The additional load generated by the stick-slip vibration can reach about 3 times of the nominal load; the stick-slip vibration can reduce the adhesion utilization rate by more than 10%. The torsional rigidity of the wheel axle is increased, so that the torsional amplitude of the wheel track can be effectively reduced, and the fatigue reliability of the wheel set and the adhering utilization rate of the wheel track are improved. Therefore, improving the torsional rigidity of the wheel set system is an effective measure to improve the reliability of the wheel set and the utilization of the adhesion of the wheel rail.
In order to increase the torsional rigidity of the wheel set under the conditions of limited space and weight limit. The current solution is to increase the torsional stiffness of the wheel set by increasing the axle diameter as much as possible and bore holes in the middle of the axle to reduce the axle mass. The diameter of the axle journals at the two ends of the axle needs to be increased along with the increase of the diameter of the traditional integral solid axle, otherwise, after the middle boring, the strength can be greatly reduced, but the scheme has very limited effect due to the restriction of the primary suspension height and the weight of the axle box.
Disclosure of Invention
The utility model aims to provide a locomotive axle and a locomotive wheel set, which are used for solving the technical problem of low torsional rigidity of the locomotive wheel set.
In order to achieve the above purpose, the specific technical scheme of the utility model is as follows:
the locomotive axle comprises a hollow shaft, wherein the hollow shaft is provided with an axle hole extending along the length direction, two ends of the axle hole are respectively provided with a shaft journal, the outer wall surface of the shaft journal is provided with an axle box mounting part, and the end part of the outer wall surface of the hollow shaft is a wheel mounting part.
Therefore, the axle shaft adopting the combination of the axle journal and the hollow shaft is adopted, so that the diameter of the axle journal does not need to be increased along with the diameter of the hollow shaft in the processing process, and the light weight of the axle shaft is realized while the strength of the axle shaft is ensured.
Further, the cross section of the hollow shaft is circular.
Further, the journal is connected to the hollow shaft by an interference fit.
Based on the same design concept, the utility model also provides a locomotive wheel pair, which comprises a wheel pair body, wherein the wheel pair body comprises the locomotive axle and wheels arranged at two ends of the locomotive axle, and the wheels are arranged on the wheel mounting parts.
Therefore, the locomotive axle of the utility model improves the torsional rigidity of the wheel set by increasing the diameter of the hollow shaft and reduces the torsional vibration amplitude of the wheel set.
Further, the wheel is connected with the hollow shaft through an interference fit.
Still further, be equipped with drive assembly on the wheel pair body, drive assembly includes transmission and transmission shaft, the transmission shaft is hollow axle sleeve structure, and sets up hollow axle periphery, the both ends of transmission shaft are equipped with first driving disk and second driving disk respectively, first driving disk is connected with transmission, the second driving disk is connected with the wheel of homonymy.
Further, a rubber joint is arranged on the second transmission disc, and the wheel is connected with the rubber joint through a force transmission pin.
The utility model has the following advantages: the utility model effectively improves the torsional rigidity of the wheel set and reduces the torsional vibration amplitude of the wheel set on the premise of not increasing the primary suspension height, the axle box and the axle weight.
Drawings
FIG. 1 is an assembly view of a wheel set of the present utility model;
FIG. 2 is a diagram of a simulation analysis of the present utility model;
FIG. 3 is a graph of wheel track creep force versus creep rate characteristics.
The figure indicates: 1. a journal; 2. a hollow shaft; 3. a wheel; 4. a transmission device; 5. a transmission shaft; 6. a rubber joint; 7. a force transmission pin; 8. a wheel set body; 9. a transmission assembly; 10. a first drive plate; 11. a second drive plate; 12. a shaft hole; 13. an axle box mounting portion; 14. and a wheel mounting portion.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings for a better understanding of the objects, structures and functions of the present utility model.
As shown in fig. 1, a locomotive wheel set of the present embodiment includes a wheel set body 8, the wheel set body 8 including a locomotive axle, and wheels 3 mounted at both ends of the locomotive axle, the locomotive axle including a hollow shaft 2, the hollow shaft 2 having a shaft hole 12 extending in a length direction, such that a cross section of the hollow shaft 2 is ring-shaped. Two ends of the shaft hole 12 are respectively provided with a shaft neck 1, the outer wall surface of the shaft neck 1 is an axle box installation part 13, and the end part of the outer wall surface of the hollow shaft 2 is a wheel installation part 14. In particular, the journal 1 is connected to the hollow shaft 2 by an interference fit. The wheel 3 is fitted by interference on a wheel mounting portion 14, and the axle housing mounting portion 13 is used for mounting an axle housing on the journal 1.
The wheel set is characterized in that a transmission assembly 9 is arranged on the wheel set body 8, the transmission assembly 9 comprises a transmission device 4 and a transmission shaft 5, the transmission shaft 5 is of a hollow shaft sleeve structure and is arranged on the periphery of the hollow shaft 2, a first transmission disc 10 and a second transmission disc 11 are respectively arranged at two ends of the transmission shaft 5, the first transmission disc 10 is connected with the transmission device 4, and the second transmission disc 11 is connected with the wheels 3 on the same side. Specifically, the second driving disc 11 is provided with a rubber joint 6, and the wheel 3 is connected with the rubber joint 6 through a force transmission pin 7. The transmission 4 is connected to the drive shaft 5 by means of a rubber tie rod 6, so that torque is transmitted to the drive shaft 5. The transmission shaft 5 is connected with the wheel 3 through the rubber pull rod 6 and the force transmission pin 7, and finally transmits torque to the wheel pair.
When the embodiment is used, the transmission device 4 drives the first transmission disc 10 to rotate, the first transmission disc 10 drives the second transmission disc 11 to rotate through the transmission shaft 5, the second transmission disc 11 drives the wheel 3 on one side to rotate through the force transmission pin 7, and the wheel 3 on one side drives the wheel on the other side to rotate through the locomotive axle of the embodiment.
The combined axle provided by the embodiment can effectively improve the torsional rigidity of the wheel set and reduce the torsional vibration amplitude of the wheel set on the premise of not increasing the primary suspension height, the axle box and the weight of the axle. Fig. 2 is a simulation analysis of stick-slip vibration of the wheel set with high and low torsional rigidity according to the present embodiment, and as can be seen from fig. 2, the torsional amplitude of the wheel set with high torsional rigidity is only about 30% of that with low torsional rigidity. The locomotive axle of the embodiment can also be used for a locomotive motor axle-holding wheel pair and a non-power wheel pair.
It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (7)
1. The locomotive axle is characterized by comprising a hollow shaft (2), wherein the hollow shaft (2) is provided with an axle hole (12) extending along the length direction, two ends of the axle hole (12) are respectively provided with an axle journal (1), an axle box mounting part (13) is arranged on the outer wall surface of the axle journal (1), and the end part of the outer wall surface of the hollow shaft (2) is a wheel mounting part (14).
2. Locomotive axle according to claim 1, characterized in that the hollow shaft (2) is circular in cross section.
3. Locomotive axle according to claim 1, characterized in that the journal (1) is connected to the hollow shaft (2) by an interference fit.
4. A locomotive wheelset, characterized by comprising a wheelset body (8), the wheelset body (8) comprising a locomotive axle as claimed in any one of claims 1 to 3, and wheels (3) mounted at both ends of the locomotive axle, the wheels (3) being mounted on the wheel mounting portions (14).
5. Locomotive wheelset according to claim 4, wherein the wheel (3) is connected to the hollow shaft (2) by an interference fit.
6. The locomotive wheelset according to claim 4, wherein the wheelset body (8) is provided with a transmission assembly (9), the transmission assembly (9) comprises a transmission device (4) and a transmission shaft (5), the transmission shaft (5) is of a hollow shaft sleeve structure and is arranged on the periphery of the hollow shaft (2), two ends of the transmission shaft (5) are respectively provided with a first transmission disc (10) and a second transmission disc (11), the first transmission disc (10) is connected with the transmission device (4), and the second transmission disc (11) is connected with the wheels (3) on the same side.
7. Locomotive wheelset according to claim 6, characterized in that the second driving disc (11) is provided with a rubber joint (6), and the wheels (3) are connected with the rubber joint (6) through a force transmission pin (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320620843.6U CN219634910U (en) | 2023-03-27 | 2023-03-27 | Locomotive axle and wheel set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320620843.6U CN219634910U (en) | 2023-03-27 | 2023-03-27 | Locomotive axle and wheel set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219634910U true CN219634910U (en) | 2023-09-05 |
Family
ID=87821118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320620843.6U Active CN219634910U (en) | 2023-03-27 | 2023-03-27 | Locomotive axle and wheel set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219634910U (en) |
-
2023
- 2023-03-27 CN CN202320620843.6U patent/CN219634910U/en active Active
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