Outer sleeve for track-pitch-variable wheel pair, track-pitch-variable wheel pair and railway vehicle
阅读说明:本技术 变轨距轮对用外套筒、变轨距轮对及轨道车辆 (Outer sleeve for track-pitch-variable wheel pair, track-pitch-variable wheel pair and railway vehicle ) 是由 周平宇 郑静 张振先 王大强 杨欣 于 2020-07-28 设计创作,主要内容包括:本发明涉及轨道车辆变轨距领域,提供变轨距轮对用外套筒、变轨距轮对及轨道车辆。该变轨距轮对用外套筒用于套设在变轨距轮对的车轴外,所述外套筒的内周构造有至少一个第一滚道,所述外套筒内位于所述第一滚道的轴向两侧且距离所述第一滚道设定间距处分别设有内花键。本发明的外套筒结构设计巧妙,使得车轴与车轮连接结构简单,变轨距可靠性高。(The invention relates to the field of rail gauge changing of rail vehicles, and provides an outer sleeve for a rail gauge changing wheel pair, the rail gauge changing wheel pair and the rail vehicle. The outer sleeve for the track-variable wheel set is used for being sleeved outside an axle of the track-variable wheel set, at least one first rolling way is formed in the inner periphery of the outer sleeve, and inner splines are arranged on two axial sides of the first rolling way and at a distance from the first rolling way to a set distance respectively in the outer sleeve. The outer sleeve is ingenious in structural design, so that the connection structure of the axle and the wheel is simple, and the track distance changing reliability is high.)
1. The outer sleeve for the track-variable wheel pair is characterized in that the outer sleeve is used for being sleeved outside an axle of the track-variable wheel pair, at least one first rolling way is formed in the inner circumference of the outer sleeve, and inner splines are arranged on two axial sides of the first rolling way and at a distance set by the first rolling way in the outer sleeve respectively.
2. The outer sleeve for a track-changing wheelset according to claim 1, wherein the number of the first raceways is two, and the two first raceways are arranged side by side around an inner circumference of the outer sleeve.
3. The outer sleeve for the track-changing wheelset according to claim 2, wherein the cross section of the first raceway is concave semicircular, and a rolling body mounting hole communicated with the first raceway is formed in a side wall of the outer sleeve at the first raceway.
4. The outer sleeve for a track-changing wheelset according to claim 1, wherein the outer sleeve forms an annular flange at a portion where the first raceway is configured, the annular flange having an inner diameter smaller than an inner diameter of a remaining portion of the outer sleeve to form stopper end surfaces at both axial ends of the annular flange.
5. An outer sleeve for a variable gauge wheel set according to any of claims 1-4, wherein the outer circumference of the outer sleeve is configured with a gearbox mount or a brake disc mounting interface.
6. A track-changing wheelset comprising an axle and a pair of wheels, further comprising an outer sleeve for a track-changing wheelset according to any one of claims 1 to 5, and a pair of bushings;
the outer periphery of the axle close to the middle part is provided with a section of external spline extending along the axial direction of the axle, the outer periphery of the axle is provided with a section of first non-self-locking threads with opposite turning directions at two axial sides of the external spline, and a second rolling way which surrounds the circumferential direction of the axle and corresponds to the first rolling way is formed at the position of the axle between one of the first non-self-locking threads and the external spline;
the outer sleeve is sleeved outside the axle, the first rolling way and the second rolling way are combined to form a rolling space, and a rolling body matched with the rolling space is arranged in the rolling space so as to rotatably connect the outer sleeve outside the axle;
the pair of wheels are respectively arranged on the axle through the shaft sleeves, the wheels are fastened on the outer periphery of the first end of each shaft sleeve, and the inner periphery of the second end of each shaft sleeve is provided with a second non-self-locking thread which is matched with the first non-self-locking thread to form a non-self-locking thread pair;
and the periphery of the second end of the shaft sleeve is provided with an external spline matched with the internal spline of the outer sleeve.
7. The track-variable wheel pair according to claim 6, wherein a central through hole is formed in the axial direction of the axle, an oblong hole penetrating along the radial direction of the axle is formed in the position, located on the external spline of the axle, and the length direction of the oblong hole is along the axial direction of the axle;
the track distance variable wheel pair further comprises a locking slip ring, a thrust pin and an elastic piece;
the locking slip ring is slidably sleeved at an outer spline of the axle, an inner spline matched with the outer spline of the axle is arranged in the locking slip ring, an outer spline matched with the inner spline of the outer sleeve is arranged outside the locking slip ring, a pair of open grooves are formed in the inner wall of the locking slip ring along the radial direction, openings of the open grooves are communicated with one end of the locking slip ring, the thrust pin penetrates through the long circular hole, two ends of the thrust pin are exposed out of the long circular hole and embedded in the pair of open grooves through the openings of the open grooves, the elastic piece is sleeved on the axle, one end of the elastic piece abuts against the outer wall of the second roller path, the other end of the elastic piece abuts against the end part, far away from the open groove, the elastic piece is in a natural state, at least part of the outer spline outside the locking slip ring is located in the inner spline on the, to lock rotation of the outer sleeve.
8. The track-variable wheel pair according to claim 7, further comprising a thrust rod, wherein one end of the thrust rod penetrates through the central through hole of the axle and abuts against the thrust pin at one side of the open slot, and the other end of the thrust rod extends out of the central through hole.
9. The track-changing wheel pair according to claim 8, further comprising an unlocking mechanism mounted at an end of said axle from which said thrust rod extends;
the axletree is located a pair of axle box body is installed respectively to the outer both ends of wheel, release mechanism includes that mount pad and axial pass the promotion head of mount pad, mount pad fixed mounting be in the axletree is external, promote the head with the extension end of distance rod is relative.
10. Gauge-changing wheel pair according to claim 7,
the length of the second non-self-locking thread is greater than that of the first non-self-locking thread and is equal to half of the variable gauge;
after the outer sleeves are connected with the axle, a pair of installation spaces of the shaft sleeves are formed between the outer sleeves and the axle on two axial sides of the rolling space;
the elastic piece is a locking spring.
11. A rail vehicle comprising a vehicle body and bogies provided under said vehicle body, wherein each of said bogies is provided with a pair of gauge-changing wheel pairs according to any one of claims 6 to 10.
Technical Field
The invention relates to the technical field of rail gauge changing of rail vehicles, in particular to an outer sleeve for a rail gauge changing wheel pair, the rail gauge changing wheel pair and the rail vehicle.
Background
The transnational passenger and cargo transportation is rapidly increased in recent years, but the rail gauges of railways of different countries cause serious obstacles to transnational railway transportation. In order to solve the problem that the different track gauges of railways of different countries obstruct transnational railway transportation, a variable-gauge train is proposed, namely, when the train runs on railways of other countries, the track gauge of the railways of other countries is adapted by changing the distance between wheels on axles.
However, the existing axle and wheel connecting structure is complex, and the track-changing reliability is low.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the outer sleeve for the track-variable wheel pair is ingenious in structural design, so that the connection structure of the axle and the wheel is simple, and the track-variable reliability is high.
The invention further provides a track-distance-variable wheel pair.
The invention further provides the railway vehicle.
According to the embodiment of the first aspect of the invention, the outer sleeve for the track-variable wheel set is used for being sleeved outside an axle of the track-variable wheel set, the inner periphery of the outer sleeve is provided with at least one first rolling way, and the outer sleeve is internally provided with internal splines which are positioned on two axial sides of the first rolling way and are separated from the first rolling way by a set distance.
According to one embodiment of the invention, the number of the first raceways is two, and the two first raceways are arranged side by side around the inner circumference of the outer sleeve.
According to one embodiment of the invention, the cross section of the first raceway is concave and semicircular, and the side wall of the outer sleeve at the first raceway is configured with rolling element mounting holes communicated with the first raceway.
According to an embodiment of the invention, the outer sleeve forms an annular flange at a portion where the first raceway is configured, the annular flange having an inner diameter smaller than an inner diameter of the remaining portion of the outer sleeve to form stopper end surfaces at both axial ends of the annular flange.
According to one embodiment of the invention, the outer circumference of the outer sleeve is configured with a gearbox mounting or brake disc mounting interface.
A track-variable wheel pair according to an embodiment of the second aspect of the present invention comprises an axle and a pair of wheels, and further comprises an outer sleeve for track-variable wheel pair as described above, and a pair of bushings;
the outer periphery of the axle close to the middle part is provided with a section of external spline extending along the axial direction of the axle, the outer periphery of the axle is provided with a section of first non-self-locking threads with opposite turning directions at two axial sides of the external spline, and a second rolling way which surrounds the circumferential direction of the axle and corresponds to the first rolling way is formed at the position of the axle between one of the first non-self-locking threads and the external spline;
the outer sleeve is sleeved outside the axle, the first rolling way and the second rolling way are combined to form a rolling space, and a rolling body matched with the rolling space is arranged in the rolling space so as to rotatably connect the outer sleeve outside the axle;
the pair of wheels are respectively arranged on the axle through the shaft sleeves, the wheels are fastened on the outer periphery of the first end of each shaft sleeve, and the inner periphery of the second end of each shaft sleeve is provided with a second non-self-locking thread which is matched with the first non-self-locking thread to form a non-self-locking thread pair;
and the periphery of the second end of the shaft sleeve is provided with an external spline matched with the internal spline of the outer sleeve.
According to one embodiment of the invention, a central through hole is formed in the axial direction of the axle, an oblong hole penetrating along the radial direction of the axle is formed in the position, located on the outer spline of the axle, and the length direction of the oblong hole is along the axial direction of the axle;
the track distance variable wheel pair further comprises a locking slip ring, a thrust pin and an elastic piece;
the locking slip ring is slidably sleeved at an outer spline of the axle, an inner spline matched with the outer spline of the axle is arranged in the locking slip ring, an outer spline matched with the inner spline of the outer sleeve is arranged outside the locking slip ring, a pair of open grooves are formed in the inner wall of the locking slip ring along the radial direction, openings of the open grooves are communicated with one end of the locking slip ring, the thrust pin penetrates through the long circular hole, two ends of the thrust pin are exposed out of the long circular hole and embedded in the pair of open grooves through the openings of the open grooves, the elastic piece is sleeved on the axle, one end of the elastic piece abuts against the outer wall of the second roller path, the other end of the elastic piece abuts against the end part, far away from the open groove, the elastic piece is in a natural state, at least part of the outer spline outside the locking slip ring is located in the inner spline on the, to lock rotation of the outer sleeve.
According to one embodiment of the invention, the automobile axle further comprises a thrust rod, one end of the thrust rod penetrates through the central through hole of the axle and abuts against one side of the thrust pin, which is located on the open slot, and the other end of the thrust rod extends out of the central through hole.
According to one embodiment of the invention, the automobile further comprises an unlocking mechanism, wherein the unlocking mechanism is arranged at one end of the axle, which is positioned at the extending end of the thrust rod;
the axletree is located a pair of axle box body is installed respectively to the outer both ends of wheel, release mechanism includes that mount pad and axial pass the promotion head of mount pad, mount pad fixed mounting be in the axletree is external, promote the head with the extension end of distance rod is relative.
According to one embodiment of the invention, the length of the second non self-locking thread is greater than the length of the first non self-locking thread and equal to half of the variable gauge;
after the outer sleeves are connected with the axle, a pair of installation spaces of the shaft sleeves are formed between the outer sleeves and the axle on two axial sides of the rolling space;
the elastic piece is a locking spring.
According to the third aspect of the invention, the rail vehicle comprises a vehicle body and bogies arranged below the vehicle body, wherein each bogie is provided with a pair of the track-variable wheel pairs.
One or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:
according to the outer sleeve for the track-variable wheel pair, the inner periphery of the outer sleeve is provided with the at least one first rolling way, the inner portions, located on two axial sides of the first rolling way, of the outer sleeve and spaced from the first rolling way by a set distance are respectively provided with the internal splines, the outer sleeve is used for connecting a wheel with an axle, the structural design is ingenious, the connection structure of the axle and the wheel is simple, and the track-variable reliability is high.
According to the track-variable wheel pair provided by the embodiment of the invention, the outer sleeve for the track-variable wheel pair is arranged, a complex track-variable mechanism is not required to be arranged, and the structures of other matched components outside the axle are simplified, so that the track-variable wheel pair is simple in integral structure, convenient to install and reliable in track-variable.
The rail vehicle provided by the embodiment of the invention has all the advantages of the variable-gauge wheel set by arranging the variable-gauge wheel set, and the description is omitted.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic axial cross-sectional view of an outer sleeve for a track-changing wheelset in accordance with an embodiment of the present invention, wherein the outer sleeve is used in a railcar;
FIG. 2 is an axial cross-sectional structural schematic view of an outer sleeve for a track-changing wheelset in accordance with an embodiment of the present invention for a trailer;
FIG. 3 is a front view schematic illustration of an axle of an embodiment of the present invention;
FIG. 4 is a schematic perspective view of a bushing according to an embodiment of the present invention;
FIG. 5 is a schematic axial sectional view of a track-variable wheel set according to an embodiment of the present invention;
fig. 6 is an axial sectional structural schematic view of another variable gauge wheel pair according to an embodiment of the present invention.
Reference numerals:
10. an axle; 11. an outer spline of the axle; 12. a long round hole; 13. a second raceway; 14. a first non self-locking thread; 15. a central through hole; 20. a shaft sleeve; 21. a second non self-locking thread; 22. an external spline of the shaft sleeve; 30. a wheel; 40. an outer sleeve; 41. a first raceway; 42. an internal spline; 50. a shaft box body; 60. locking the slip ring; 70. a locking spring; 80. a thrust pin; 90. a thrust rod; 100. an unlocking mechanism; 110. a sliding bearing; 120. a gear case; 130. a brake disc; 140. a gear box mounting seat; 150. a brake disc mounting interface.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
As shown in fig. 1 to 6, an outer sleeve for a track-variable wheel set and a track-variable wheel set are provided in an embodiment of the present invention.
For clarity of the disclosure, the present embodiment describes the outer sleeve for the gauge wheel set in combination with the gauge wheel set.
Referring to fig. 1 to 6, the track-variable wheelset according to the embodiment of the present invention includes an
Specifically, as shown in fig. 3, a central through
In this embodiment, the length of the
As shown in fig. 1 and 2, the
The "set pitch" may be set according to specific needs, and the set pitch of the
In order to improve the reliability of the connection of the
Referring again to fig. 3, in one embodiment, the axle 10 is configured with a second raceway 13 disposed circumferentially around the axle 10 at a location between one of the first non-self-locking threads 14 and the axle's external spline 11, the second raceway 13 being disposed adjacent the axle's external spline 11 and corresponding to the
In the present embodiment, the size and shape of the
As shown in fig. 5 and 6, specifically, a pair of
The
The outer periphery of the second end of the
According to one embodiment of the invention, the axle 10 forms an annular boss at the portion where the second raceway 13 is constructed, the outer diameter of the annular boss being larger than the outer diameter of the remaining portion of the axle 10 to form locating end faces at both axial ends of the annular boss.
Referring again to fig. 5 and 6, in particular,
According to one embodiment of the invention, the pair of gauge wheels further comprises a locking slip ring 60, a
Specifically, the locking slip ring 60 is slidably sleeved on the outer spline 11 of the axle, the locking slip ring 60 is internally provided with an
Of course, in order to facilitate the
An elastic member such as a locking spring 70 is sleeved on the axle 10, one end of the elastic member abuts against the outer wall of the second raceway 13, namely the positioning end face, and the other end abuts against the end part of the locking slip ring 60 away from the opening slot, in a natural state of the elastic member, at least part of the external splines of the locking slip ring 60 are located in the
As shown in fig. 5 and 6, one end of the
After the track distance is changed, the thrust of the
The embodiment has the advantages of convenient and reliable track gauge changing and simple overall structure.
In this embodiment, the first non-self-locking thread 14 is a trapezoidal thread, and correspondingly, the second non-self-locking thread 21 is a trapezoidal thread matched with the trapezoidal thread, so that the performance of the trapezoidal thread is reliable.
It should be noted that the elastic member may also be other elastic sleeves with certain elasticity.
In order to directly apply thrust to the
Specifically, the unlocking
According to one embodiment of the invention, the inner periphery of the
After the
For a railcar track pair, the
Further, the axle 10 is divided into a main axle shaft and a sub axle shaft by the second raceway 13, and the axle 10 provided with the external spline and the
For structural optimization, the second raceway 13 is disposed adjacent to the external spline 11 of the axle.
According to one embodiment of the invention, the spacing between the external splines 11 of the axle and the adjacent first non-self-locking threads 14 is equal to the spacing between the annular flange and the adjacent first non-self-locking threads 14, and equal to half of the variable track pitch, which is the space for the movement of the second non-self-locking threads 21 of the
According to one embodiment of the present invention, both axial ends of the axle 10 are constructed as stepped shafts having both ends with a smaller diameter than the middle diameter, so that both end shafts of the stepped shafts are used to mount the
According to one embodiment of the present invention, the intermediate shaft of the stepped shaft is formed with a sliding section at a location between each section of the first non-self-locking thread 14 and the shaft end of the intermediate shaft, respectively, to facilitate the sliding of the
The embodiment realizes the track transfer process as follows:
1. unlocking the section: the
2. A variable pitch section: and when the vehicle enters a variable-pitch section, the
3. A locking section: and when the wheel pair enters a locking section, the unlocking rail is gradually reduced and exits the supporting function, the locking slide ring 60 and the like move outwards under the thrust of the locking spring 70 and are inserted into the
The rail vehicle comprises a vehicle body and bogies arranged below the vehicle body, wherein each bogie is provided with a pair of track gauge-variable wheel pairs, and the track vehicle can run on different track gauge tracks by arranging the track gauge-variable wheel pairs. And through setting up above-mentioned track gauge-variable wheel pair, have all advantages of track gauge-variable wheel pair, no longer describe here.
The above embodiments are merely illustrative of the present invention and are not to be construed as limiting the invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.
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