CN114312888A - Truck wheel pair with high braking performance and design method thereof - Google Patents
Truck wheel pair with high braking performance and design method thereof Download PDFInfo
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- CN114312888A CN114312888A CN202210084573.1A CN202210084573A CN114312888A CN 114312888 A CN114312888 A CN 114312888A CN 202210084573 A CN202210084573 A CN 202210084573A CN 114312888 A CN114312888 A CN 114312888A
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Abstract
The invention discloses a truck wheel pair with high braking performance and a design method thereof, wherein the wheel pair comprises an axle, wheels and an axle box, wherein the end part of the axle is provided with a shaft neck and a wheel seat, the wheels are arranged on the wheel seat, the axle box is arranged corresponding to the shaft neck, the axle box is arranged on the outer side of the wheels, a bearing is arranged in the axle box and is sleeved on the shaft neck, the truck wheel pair also comprises a locking nut and a bearing retainer ring, the bearing retainer ring is sleeved on the shaft neck to position the outer side of the bearing, the outer edge of the end part of the shaft neck is provided with a bearing positioning thread matched with the internal thread of the locking nut, the inner side of the locking nut is attached to the outer side of the bearing retainer ring, and the outer end surface of the locking nut is connected with the end surface of the axle through a fastening structure. The axle box suspension technology of the axle end nut locking bearing is adopted, the locking torque of the end part of the wheel set is large, the occurrence of axial movement of the wheel set bearing caused by insufficient locking force is greatly improved, the axial displacement of the wheel rim is small, and the stability and the reliability are realized; the wheel set assembling is easy to assemble, and the qualification rate of wheel set assembling reaches 99.5 percent.
Description
Technical Field
The invention relates to the technical field of railways, in particular to a truck wheel pair with high braking performance and a design method thereof.
Background
The wheel set is an important part in the vehicle walking part, which is in direct contact with the rail, and consists of two wheels which are press-mounted on the same axle through interference fit, and has the functions of ensuring the stable running and steering of the vehicle on the rail.
The wheel set mainly comprises three parts, namely an axle, wheels and an axle box structure, wherein the axle is a cylindrical structure which is assembled in a wheel hub hole and used for bearing the weight of a vehicle, and the axle is mainly divided into four parts, namely a shaft neck, a dust guard seat, a wheel seat and an axle body; the wheel mainly comprises a wheel rim, a tread, a spoke plate and a hub, wherein the spoke plate is the key for bearing the whole wheel and has high requirements on mechanical performance; the axle box structure comprises a labyrinth ring, a bearing, a retainer ring, a locking nut, a locking gasket, an axle box, an end cover, a bolt and the like, and is a key part of the whole wheel pair supporting bogie and a vehicle body.
At present, the railway wagon wheel pair needs to bear large load (18t and above) and frequent and long-time vehicle start-stop braking working conditions besides meeting the modern freight transportation requirements, and the braking of the wagon vehicle is mainly realized by the braking of the wagon wheel pair. Current truck vehicle braking is mainly composed of two forms: wheel set tread braking and wheel set shaft disc braking, and the wheel set shaft disc braking mode needs to load a brake disc on an axle of a wheel set, so that unsprung mass of the wheel set is greatly increased, and the requirement of a truck on load capacity cannot be met; meanwhile, the wheel tread of the wheel set is braked, and the wheel tread of the wheel set bears brake heat for a long time, so that the condition that the wheel of the wheel set is deformed and the residual stress exceeds the standard in the full-load condition and the long-time continuous braking (over 45 min) process of most trucks is caused, the maintenance period of the wheel set is greatly reduced, and the maintenance cost is greatly increased. Particularly, the requirements of European rail wagons on wheel sets are extremely high, and the vehicle wheel sets particularly meet the actual working condition requirements of continuous braking for at least 45 minutes, so that the requirements on the wheel structures of the wheel sets, the fixing modes of bearings and the like are extremely strict, and particularly the requirements on the deformation of wheel discs and the residual stress of the whole wheel under the long-time continuous braking working condition of the wheel are very high.
The end part structure of the existing truck wheel pair is complex and unreasonable, the bearing of the wheel pair is directly fixed through the end cover of the shaft end, the locking moment is small, the bearing is likely to cause large axial movement due to insufficient locking force, and the service life of the wheel pair is influenced; and the assembly is tedious, and the wheel set assembly qualification rate is lower.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a truck wheel pair with high braking performance and a design method thereof so as to achieve the purposes of large locking moment at the end part of the wheel pair, small axial displacement of a rim, stability and reliability.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the utility model provides a high brake performance freight car wheel pair, includes axletree and wheel and axle box, the tip of axletree is equipped with axle journal and wheel seat, and the wheel is established on the wheel seat, and the axle box corresponds the axle journal setting, and the axle box is located the outside of wheel, is equipped with the bearing in the axle journal, and the bearing housing is established on the axle journal, still includes lock nut and bearing retainer ring, the bearing retainer ring cover is established and is fixed a position the bearing outside on the axle journal, is equipped with the bearing location screw thread with lock nut's internal thread looks adaptation in the tip outer fringe of axle journal, and lock nut's inboard is laminated with the outside of bearing retainer ring mutually, links to each other through fastening structure between lock nut's the outer terminal surface and the terminal surface of axletree.
A dustproof seat is formed between the shaft neck and the wheel seat on the axle, the inner end of the axle box is connected with the dustproof seat through a labyrinth ring, and the outer end of the axle box is provided with a detachable and openable end cover.
The top of the axle box is provided with a cylindrical groove for connecting with a bogie damping spring.
The fastening structure comprises a locking washer and a locking bolt, a threaded hole matched with the locking bolt is formed in the locking nut, a positioning hole for the locking bolt to penetrate through is formed in the locking washer, a key groove is formed in the end portion of the axle, and a protrusion matched with the key groove is formed in the locking washer.
The dustproof seat is in arc transition from the journal side to the wheel seat side.
The end of the axle is provided with an extension part, the outer diameter of the extension part is smaller than that of the axle neck, the bearing positioning thread is arranged on the outer edge of the extension part, the key groove is arranged on the end face of the extension part, the locking washer is sleeved on the extension part, and the protrusion is arranged on the inner edge of the locking washer.
And a guide cone is arranged between the dustproof seat and the outer end of the wheel seat on the axle, the dustproof seat and the outer end of the wheel seat are in transition through the guide cone, and the inner end of the wheel seat and the axle body of the axle are in transition through an arc.
The wheel comprises a hub, a spoke plate and a rim, wherein an annular silencing groove is formed in the outer side of the rim, and a silencing ring is arranged in the silencing groove.
A design method of a truck wheel pair with high braking performance comprises the following steps:
step 1: wheel set auxiliary line setting: the X axis is a horizontal central axis of the axle, and the Y axis is a bilateral symmetry axis of the axle;
step 2: design 1/2 wheel set inboard distance: taking the Y axis as a reference, wherein the inner rim surface of the wheel is vertical to the horizontal plane and is separated from the Y axis by L1;
and step 3: designing wheel pair overhang: taking the distance from the right starting point of the straight line of the axle wheel seat to the inner side surface of the wheel hub as the wheel set inner convex suspension L2, and taking the distance from the left starting point to the outer side surface of the wheel hub as the wheel set outer convex suspension L3;
and 4, step 4: designing wheel-to-wheel potential difference: the distance difference between the vertical planes of the tail ends of axle journals on two sides and the inner rim surfaces of the wheels on two sides is I L4-L5 by taking the inner rim surfaces of the wheels as a reference;
and 5: designing the wheel set overall: and taking the Y axis as a left-right symmetrical center line, and symmetrically drawing the wheels on the other side to obtain the overall wheel pair structure.
Wherein the content of the first and second substances,
in the step 2, the size of L1 is 680mm +/-0.5 mm; in the step 3, the size of L2 is 5mm +/-0.5 mm, and the size of L3 is 5mm +/-0.5 mm; in the step 4, the size of L4-L5 is 0 mm-1 mm.
Compared with the prior art, the invention has the following advantages:
the truck wheel pair with high braking performance and the design method thereof are reasonable in design, the axle box suspension technology of the axle end nut locking bearing is adopted, the locking torque at the end part of the wheel pair is large, the occurrence of axial movement of the wheel pair bearing caused by insufficient locking force is greatly improved, the axial displacement of a rim is small, and the truck wheel pair is stable and reliable; the wheel set is easy to assemble, and the qualification rate of wheel set assembly reaches 99.5 percent; the wheels and the axle wheel seat are designed in a convex suspension type structure, so that the stress concentration of the wheel set wheels is reduced and the transmission of the stress concentration to the axle is reduced, and the service life of the axle of the wheel set is prolonged; the damping ring is additionally arranged to reduce the noise of the wheel track, and the noise reduction effect is over 10.9 dB.
Drawings
The contents of the description and the references in the drawings are briefly described as follows:
fig. 1 is a schematic view of the wheel pair structure of the invention.
Fig. 2 is an enlarged schematic view of the left end of fig. 1.
Fig. 3 is a schematic view of the axle structure of the present invention.
Fig. 4 is an enlarged schematic view of the left end of fig. 3.
Fig. 5 is a schematic view of the inventive lock nut and lock washer combination.
In the figure:
1-a journal; 2-a dustproof seat; 3-wheel seat; 4-shaft body; 5-a wheel rim; 6-tread; 7-a rim; 8-a web; 9-a hub; 10-a labyrinth ring; 11-axle boxes; 12-a bearing; 13-end cap bolts; 14-a bearing retainer ring; 15-locking the nut; 16-an end cap; 17-a lock washer; 18-a locking bolt; 19-a cylindrical recess; 20-a keyway; 21-bearing positioning screw threads; 22-tool withdrawal groove; 23-journal part; 24-a dustproof seat; 25-a pilot cone; 26-a wheel seat portion; 27-shaft body part; r1, R2, R3-journal unloading groove arc; r4-transition arc of dustproof seat and wheel seat; r5, R6-shaft body transition circular arc; l1-1/2 wheelset inboard distance; l2: wheel pair inward convex suspension; the L3 wheel pair is externally suspended; i L4-L5I-wheel potential difference.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings.
As shown in fig. 1 to 5, the high-braking-performance truck wheel pair includes an axle, a wheel, an axle housing 11, a bearing 12, a lock nut 15, and a bearing retainer 14; the end of axletree is equipped with axle journal and wheel seat, the wheel is established on the wheel seat, the axle box corresponds the axle journal setting, the axle box is located the outside of wheel, the bearing is located the inside of axle box, the bearing housing is established on the axle journal, the bearing retaining ring cover is established and is fixed a position the bearing outside on the axle journal, be equipped with the bearing location screw thread 21 with lock nut's internal thread looks adaptation on the tip outer fringe of axle journal, lock nut's the inboard is laminated with the outside of bearing retaining ring mutually, link to each other through fastening structure between lock nut's the outer terminal surface and the terminal surface of axletree.
A dustproof seat 2 is formed between the shaft neck 1 and the wheel seat 3 on the axle, the inner end of the axle box is connected with the dustproof seat through a labyrinth ring 10, and the outer end of the axle box is provided with an end cover 16 which can be disassembled and opened, so that the assembly is convenient.
The top of the axle box is provided with a cylindrical groove 19 for connecting with a bogie damping spring; the axle box body is loaded by adopting an independent spring, so that the mechanical property of the wheel set in the vertical direction of the vehicle is greatly improved.
Preferably, the fastening structure comprises a locking washer 17 and a locking bolt 18, a threaded hole matched with the locking bolt is formed in the locking nut, a positioning hole for the locking bolt to penetrate through is formed in the locking washer, a key groove 20 is formed in the end portion of the axle, and a protrusion matched with the key groove is formed in the locking washer.
The end of the axle is provided with a protruding part, the outer diameter of the protruding part is smaller than that of the axle neck, the bearing positioning thread is arranged on the outer edge of the protruding part, the key groove is arranged on the end face of the protruding part, the locking washer is sleeved on the protruding part, and the protrusion is arranged on the inner edge of the locking washer.
The axle box suspension technology of the axle end nut locking bearing is adopted, the locking torque of the end part of the wheel set is large, the occurrence of axial movement of the wheel set bearing caused by insufficient locking force is greatly improved, the axial displacement of the wheel rim is small, and the stability and the reliability are realized; the wheel set assembling is easy to assemble, and the qualification rate of wheel set assembling reaches 99.5 percent.
The dustproof seat is in arc transition from the journal side to the wheel seat side; a guide cone 25 is arranged between the dustproof seat and the outer end of the wheel seat on the axle, the dustproof seat and the outer end of the wheel seat are in transition through the guide cone, and the inner end of the wheel seat and the axle body 4 of the axle are in transition through an arc.
Preferred specific examples are:
the truck wheel pair with high braking performance comprises an axle, wheels and an axle box, wherein the axle is of a symmetrical cylindrical structure and is mainly divided into four parts, namely a journal part 23, a dustproof seat 24, a wheel seat part 26 and an axle body part 27; the wheel consists of a flange 5, a tread 6, a rim 7, a spoke plate 8 and a hub 9; the axle is connected with the wheels in an interference fit manner, the left end and the right end of the axle are connected with an axle box structure, the axle box structure comprises a labyrinth ring, a bearing retainer ring, a locking nut, a locking washer, a locking bolt, an axle box, an end cover bolt 13 and the like, and a cylindrical groove connected with a bogie damping spring is arranged on the axle box structure.
The axletree includes keyway, bearing location screw thread, axle journal, dustproof seat, wheel seat and axle body, and every kind of structure is the symmetric distribution along the vertical central line of axletree, and keyway and bearing location screw thread are located the axletree both ends, and the axle journal is located between axle journal and the dustproof seat, and the dustproof seat is located between axle journal and the wheel seat, and the axle body is located between the two wheel seats.
The key grooves are longitudinally distributed and are positioned on the vertical end surface of the bearing positioning thread, and the bearing positioning thread is connected with the shaft neck through a tool withdrawal groove 22 with the width of 6 mm.
The shaft neck is of a linear structure, and the tail end of the shaft neck is of an unloading groove arc structure of R40 and R2.5; the dustproof seat is connected with the wheel seat through a straight line and an arc curve R25; the starting end of the wheel seat is a guide cone transition with the length of 10mm and the angle of 5 degrees, the tail end of the wheel seat is connected with the shaft body through circular arc curves R15 and R75, and the whole structure is distributed in a bilateral symmetry mode.
The wheel comprises a wheel flange, a tread, a wheel rim, a wheel disc and a wheel hub, wherein the wheel flange is positioned on the tread, the wheel rim is positioned between the tread and the wheel disc, the wheel disc is arranged between the wheel hub and the wheel rim, and the transition round angle of the contact surface of the wheel hub and an axle is R3.
The outer side of the rim is provided with an annular silencing groove, and a silencing ring is arranged in the silencing groove; preferably, the sound deadening ring is a damping ring. Vehicle operators are encouraged to reduce vehicle running noise through technical innovation, but truck owners are sensitive to cost; the damping ring is additionally arranged to reduce the wheel track noise, and compared with other noise reduction modes, the damping ring is lower in cost and has the potential of large-scale popularization. The damping ring wheel has good noise reduction effect, and the noise reduction effect of the damping ring wheel is more than 10.2 dB.
The axle box structure comprises a labyrinth ring, a bearing, an axle box, a locking nut, a locking washer, a locking bolt, an end cover and an end cover bolt. The labyrinth ring is connected with the axle dust-proof seat in a interference fit mode, the labyrinth ring is connected with the axle box through a labyrinth structure, and meanwhile the labyrinth ring and the bearing retainer ring play a horizontal positioning role in the bearing.
The bearing and the axle journal are connected in a matching mode through interference magnitude, the bearing is located on the left side of the labyrinth ring, the bearing and the axle box are in clearance fit, and the bearing retainer ring is located on the left side of the bearing. The bearing retainer ring is fixed at the shaft end by the locking nut and the bearing positioning thread. The locking nut is fixed with the bolt through the locking washer, and the locking washer has the anti-loosening effect. The outer side of the axle box is provided with an independent groove which can fix the bearing spring.
Based on the truck wheel pair with high braking performance, the truck wheel pair with high braking performance is suitable for truck wheel pairs with higher requirements on load and braking performance, the invention also relates to a design method of the truck wheel pair with high braking performance, and the design method comprises the following steps:
step 1, wheel pair auxiliary line setting: the X-axis is the axle horizontal central axis, also referred to as the axial direction. The Y axis is a bilateral symmetry axis of the axle and indicates a radial direction perpendicular to the X axis, the direction indicated by an arrow of the X axis is the left side, and the opposite direction of the arrow of the X axis is the right side;
step 3, designing wheel pair overhang: taking the distance from the right starting point of the straight line of the axle wheel seat to the inner side surface of the wheel hub as the wheel set inner convex suspension L2, and taking the distance from the left starting point to the outer side surface of the wheel hub as the wheel set outer convex suspension L3;
step 5, designing the wheel set overall: and taking the Y axis as a left-right symmetrical center line, and symmetrically drawing the wheels on the other side to obtain the overall wheel pair structure.
Further, in the step 2, the size of the L1 is 680mm +/-0.5 mm; in the step 3, the size of L2 is 5mm +/-0.5 mm, and the size of L3 is 5mm +/-0.5 mm; in the step 4, the size of L4-L5 is 0 mm-1 mm.
The invention designs a novel wheel set with the diameter of 730mm, which has good braking performance, reliable bearing fixing mode and easy assembly according to the bearing center distance of 2000mm, the inner side distance of 1360mm, the track gauge of 1421mm, the wheel position difference of less than or equal to 1mm and the wheel set overhang amount of 5mm of the wheel set.
The wheel set adopts an axle box suspension technology of a shaft end nut locking bearing, and an axle box body adopts an independent spring for bearing, so that the mechanical property of the wheel set in the vertical direction of a vehicle is greatly improved; the wheels and the axle wheel seat are designed in a convex suspension type structure, so that the stress concentration of the wheel set wheels is reduced and the transmission of the stress concentration to the axle is reduced, and the service life of the axle of the wheel set is prolonged; the wheel adopts a light weight design, passes a high-strength braking test of newly manufactured wheels and worn wheels to limit wheels at one time under the condition of smaller braking heat capacity, and meets the severe requirements that the deformation quantity of the wheel pair is small and the residual stress is kept within the standard requirement range under the requirements of large carrying capacity, high frequency and long-time braking heat load of the wheel pair. The wheel pair has good braking performance, the maximum axial displacement of the rim in the braking process of the wheel pair is 2.5mm and is smaller than the specification of the axial displacement of the rim in the braking process of the standard requirement of minus 1mm to 3mm, the maximum axial displacement of the rim after braking is 1.08mm, and the wheel pair meets the strict requirement of minus 1.5mm to plus 1.5mm of the standard requirement. The axle and wheel strength calculations both meet the relevant standard requirements and pass the european TSI certification, with one-time passage of the laboratory actual brake test of the wheel set.
The wheel set designed by the invention has the advantages that the calculated stress of all the sections of the axle is smaller than the allowable stress required by the standard, the rigidity, the strength and the thermodynamic performance of the wheel all meet the standard requirement, and the wheel set is suitable for the requirements of trucks with the axle weight of 18t and above. The wheel set designed by the invention is easy to assemble, and the qualification rate of wheel set assembly reaches 99.5 percent according to production field data.
The wheel set can be applied to European large-load (18t and above) and frequent and long-time railway wagons, is suitable for tread braking or axle disc braking, and is easy for batch production; the method for designing the truck wheel pair with high braking performance is completed, and the truck wheel pair with large load capacity (18t and above) and frequent and long-time vehicle start-stop braking working condition can be structurally designed according to the method.
The above-mentioned features are merely for describing preferred embodiments of the present invention and may be arbitrarily combined to form a plurality of embodiments of the present invention.
The invention is described above with reference to the accompanying drawings, it is obvious that the specific implementation of the invention is not limited by the above-mentioned manner, and it is within the scope of the invention to adopt various insubstantial modifications of the inventive concept and solution, or to apply the inventive concept and solution directly to other applications without modification.
Claims (10)
1. The utility model provides a high brake performance freight car wheel pair, includes axletree and wheel and axle box, the tip of axletree is equipped with axle journal and wheel seat, and the wheel is established on the wheel seat, and the axle box corresponds the axle journal setting, and the axle box is located the outside of wheel, is equipped with the bearing in the axle box, and the bearing housing is established on the axle journal, its characterized in that: the bearing retainer ring is sleeved on the shaft neck to position the outer side of the bearing, bearing positioning threads matched with the internal threads of the locking nut are arranged on the outer edge of the end part of the shaft neck, the inner side of the locking nut is attached to the outer side of the bearing retainer ring, and the outer end face of the locking nut is connected with the end face of the axle through a fastening structure.
2. A high braking performance truck wheel pair as set forth in claim 1 wherein: a dustproof seat is formed between the shaft neck and the wheel seat on the axle, the inner end of the axle box is connected with the dustproof seat through a labyrinth ring, and the outer end of the axle box is provided with a detachable and openable end cover.
3. A high braking performance truck wheel pair as set forth in claim 1 wherein: the top of the axle box is provided with a cylindrical groove for connecting with a bogie damping spring.
4. A high braking performance truck wheel pair as set forth in claim 1 wherein: the fastening structure comprises a locking washer and a locking bolt, a threaded hole matched with the locking bolt is formed in the locking nut, a positioning hole for the locking bolt to penetrate through is formed in the locking washer, a key groove is formed in the end portion of the axle, and a protrusion matched with the key groove is formed in the locking washer.
5. A high braking performance truck wheel pair as set forth in claim 2 wherein: the dustproof seat is in arc transition from the journal side to the wheel seat side.
6. The high braking performance truck wheel pair of claim 4 wherein: the end of the axle is provided with an extension part, the outer diameter of the extension part is smaller than that of the axle neck, the bearing positioning thread is arranged on the outer edge of the extension part, the key groove is arranged on the end face of the extension part, the locking washer is sleeved on the extension part, and the protrusion is arranged on the inner edge of the locking washer.
7. The high braking performance truck wheel pair of claim 5 wherein: and a guide cone is arranged between the dustproof seat and the outer end of the wheel seat on the axle, the dustproof seat and the outer end of the wheel seat are in transition through the guide cone, and the inner end of the wheel seat and the axle body of the axle are in transition through an arc.
8. A high braking performance truck wheel pair as set forth in claim 1 wherein: the wheel comprises a hub, a spoke plate and a rim, wherein an annular silencing groove is formed in the outer side of the rim, and a silencing ring is arranged in the silencing groove.
9. A design method of a truck wheel pair with high braking performance is characterized in that: the design method comprises the following steps:
step 1: wheel set auxiliary line setting: the X axis is a horizontal central axis of the axle, and the Y axis is a bilateral symmetry axis of the axle;
step 2: design 1/2 wheel set inboard distance: taking the Y axis as a reference, wherein the inner rim surface of the wheel is vertical to the horizontal plane and is separated from the Y axis by L1;
and step 3: designing wheel pair overhang: taking the distance from the right starting point of the straight line of the axle wheel seat to the inner side surface of the wheel hub as the wheel set inner convex suspension L2, and taking the distance from the left starting point to the outer side surface of the wheel hub as the wheel set outer convex suspension L3;
and 4, step 4: designing wheel-to-wheel potential difference: the distance difference between the vertical planes of the tail ends of axle journals on two sides and the inner rim surfaces of the wheels on two sides is I L4-L5 by taking the inner rim surfaces of the wheels as a reference;
and 5: designing the wheel set overall: and taking the Y axis as a left-right symmetrical center line, and symmetrically drawing the wheels on the other side to obtain the overall wheel pair structure.
10. The design method of claim 9, wherein: in the step 2, the size of L1 is 680mm +/-0.5 mm; in the step 3, the size of L2 is 5mm +/-0.5 mm, and the size of L3 is 5mm +/-0.5 mm; in the step 4, the size of L4-L5 is 0 mm-1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210084573.1A CN114312888A (en) | 2022-01-20 | 2022-01-20 | Truck wheel pair with high braking performance and design method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210084573.1A CN114312888A (en) | 2022-01-20 | 2022-01-20 | Truck wheel pair with high braking performance and design method thereof |
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| CN114312888A true CN114312888A (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210084573.1A Pending CN114312888A (en) | 2022-01-20 | 2022-01-20 | Truck wheel pair with high braking performance and design method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115534584A (en) * | 2022-10-17 | 2022-12-30 | 宝武集团马钢轨交材料科技有限公司 | Vibration and noise reduction wheel set for railway vehicle and assembling method and design method thereof |
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2022
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| US20070052287A1 (en) * | 2005-09-02 | 2007-03-08 | Hendrickson Usa, L.L.C. | Axle spindle nut assembly for heavy-duty vehicles |
| CN102438843B (en) * | 2009-05-29 | 2015-01-28 | 亨德里克森美国有限责任公司 | Precision axle spindle and wheel end assembly for heavy-duty vehicles |
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| CN115534584A (en) * | 2022-10-17 | 2022-12-30 | 宝武集团马钢轨交材料科技有限公司 | Vibration and noise reduction wheel set for railway vehicle and assembling method and design method thereof |
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