Axle for track-gauge-variable wheel set and track-gauge-variable wheel set
阅读说明:本技术 变轨距轮对用车轴及变轨距轮对 (Axle for track-gauge-variable wheel set and track-gauge-variable wheel set ) 是由 张振先 魏家麒 王旭 焦京海 胡海涛 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,提供变轨距轮对用车轴及变轨距轮对。该变轨距轮对用车轴包括车轴,所述车轴的轴向设有中心通孔,所述车轴靠近中部的外周构造有一段沿所述车轴轴向延伸的外花键,所述车轴的外周位于所述外花键的轴向两侧分别设有一段旋向相反的第一非自锁螺纹,所述车轴位于所述外花键处设有沿其径向贯通的长圆孔,所述长圆孔的长度方向沿所述车轴的轴向;所述车轴在位于其中一个所述第一非自锁螺纹与所述外花键之间的部位构造有环绕所述车轴周向设置的至少一个第一滚道。本发明车轴结构设计巧妙,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 track gauge changing of rail vehicles, and provides an axle for a track gauge changing wheel set and the track gauge changing wheel set. The axle for the track-variable wheel pair comprises an axle, wherein a central through hole is axially formed in the axle, a section of external spline extending along the axial direction of the axle is constructed on the periphery of the axle close to the middle part, first non-self-locking threads with opposite turning directions are respectively arranged on the periphery of the axle at two axial sides of the external spline, an oblong hole penetrating along the radial direction of the axle is formed in the position of the axle at the external spline, and the length direction of the oblong hole is along the axial direction of the axle; the axle shaft is configured with at least one first raceway disposed circumferentially about the axle shaft at a location between one of the first non-self-locking threads and the external spline. The axle has the advantages of ingenious structural design, simple connection structure between the axle and the wheels, and high track pitch changing reliability.)
1. An axle for a track-distance-variable wheel pair is characterized in that a central through hole is axially formed in the axle, a section of external spline extending along the axial direction of the axle is formed in the periphery of the axle close to the middle of the axle, first non-self-locking threads with opposite turning directions are respectively arranged on the periphery of the axle at two axial sides of the external spline, 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 axle shaft is configured with at least one first raceway disposed circumferentially about the axle shaft at a location between one of the first non-self-locking threads and the external spline.
2. The track-variable wheelset axle of claim 1 wherein there are two of the first raceways, two of the first raceways being disposed side-by-side, the first raceways being disposed adjacent to the external splines.
3. The track-varying wheelset axle of claim 2 wherein the first raceway is concave semi-circular in cross-section.
4. The track-changing wheelset axle of claim 1 wherein the axle forms an annular flange at the location where the first raceway is configured, the annular flange having an outer diameter greater than the outer diameter of the remainder of the axle to form stop faces at both axial ends of the annular flange.
5. The track-varying wheelset axle of claim 4 wherein the spacing between the external splines and the adjacent first non-self-locking threads is equal to the spacing between the annular flange and the adjacent first non-self-locking threads and is equal to one-half of the track-varying distance.
6. The track-variable wheelset axle of any one of claims 1-5 wherein the first non-self-locking threads are trapezoidal threads.
7. The track-variable wheelset axle according to any one of claims 1 to 5, wherein both axial ends of the axle are configured as stepped shafts having a smaller diameter at both ends than at the middle, and both end shafts of the stepped shafts are used for mounting axle housings.
8. The track-changing wheelset axle of claim 7 wherein the intermediate shaft of the stepped shaft is formed with a slip segment at a location between each segment of the first non-self-locking threads and the axial end of the intermediate shaft.
9. A track-changing wheelset comprising an axle and a pair of wheels, wherein the axle is an axle for a track-changing wheelset according to any one of claims 1 to 8;
the device also comprises an outer sleeve and a pair of shaft sleeves;
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;
the outer periphery of the second end of the shaft sleeve is provided with an external spline;
the outer sleeve cover is established outside the axletree, the inner peripheral structure of outer sleeve have with the corresponding second raceway of first raceway, the second raceway is equipped with the rolling element mounting hole, first raceway with the second raceway is to closing and is formed the roll space, through the rolling element mounting hole to install the rolling element rather than matching in the roll space, with the outer sleeve rotationally connects outside the axletree, be located in the outer sleeve the axial both sides and the distance of second raceway the second raceway is set for the interval punishment and is equipped with respectively with the internal spline that external splines on the axle sleeve matees.
10. The pair of track-changing wheels according to claim 9, further comprising a locking slip ring, a thrust pin, an elastic member and a thrust rod;
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 round hole, two ends of the thrust pin are exposed out of the long round 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 first 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;
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 at the open slot, and the other end of the thrust rod extends to the end part of the central through hole.
11. The pair of track-changing wheels according to claim 10, further comprising an unlocking mechanism mounted at one end of said axle at said 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 axle box is external, promote the head with the distance rod sets up relatively.
12. Gauge-changing wheel pair according to claim 10,
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;
an annular boss is arranged at the position, where the second rolling way is formed, of the inner periphery of the outer sleeve, and after the outer sleeve is connected with the axle, a pair of installation spaces of the shaft sleeve is formed between the outer sleeve and the axle at two axial sides of the rolling space;
the elastic piece is a locking spring.
Technical Field
The invention relates to the technical field of track gauge changing of rail vehicles, in particular to an axle for a track gauge changing wheel set and the track gauge changing wheel set.
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 axle for the track-variable wheel pair is ingenious in structural design, so that the connection structure of the axle and the wheels is simple, and the track-variable reliability is high.
The invention further provides a track-distance-variable wheel pair.
According to an embodiment of one aspect of the invention, a central through hole is axially formed in an axle, a section of external spline extending along the axial direction of the axle is constructed on the periphery of the axle close to the middle part, a section of first non-self-locking threads with opposite turning directions are respectively arranged on the periphery of the axle at two axial sides of the external spline, an oblong hole penetrating along the radial direction of the axle is formed in the position of the axle at the external spline, and the length direction of the oblong hole is along the axial direction of the axle;
the axle shaft is configured with at least one first raceway disposed circumferentially about the axle shaft at a location between one of the first non-self-locking threads and the external spline.
According to one embodiment of the invention, the number of the first raceways is two, the two first raceways are arranged side by side, and the first raceways are arranged adjacent to the external spline.
According to one embodiment of the invention, the cross-section of the first raceway is concave-semicircular.
According to one embodiment of the invention, the axle shaft forms an annular flange at a portion where the first raceway is configured, the annular flange having an outer diameter larger than an outer diameter of the remaining portion of the axle shaft to form stopper end surfaces at both axial ends of the annular flange.
According to one embodiment of the invention, the spacing between the external splines and the adjacent first non self-locking thread is equal to the spacing between the annular flange and the adjacent first non self-locking thread and equal to half of the variable gauge.
According to one embodiment of the invention, the first non self-locking thread is a trapezoidal thread.
According to one embodiment of the invention, the two axial ends of the axle are constructed into stepped shafts with diameters smaller than the middle diameter, and the two end shafts of the stepped shafts are used for mounting the axle box body.
According to one embodiment of the invention, the intermediate shaft of the stepped shaft is formed with a sliding section at a position between each section of the first non self-locking thread and the shaft end of the intermediate shaft.
According to another aspect of the invention, the track-variable wheel pair comprises an axle and a pair of wheels, wherein the axle adopts the axle for the track-variable wheel pair;
the device also comprises an outer sleeve and a pair of shaft sleeves;
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;
the outer periphery of the second end of the shaft sleeve is provided with an external spline;
the outer sleeve cover is established outside the axletree, the inner peripheral structure of outer sleeve have with the corresponding second raceway of first raceway, the second raceway is equipped with the rolling element mounting hole, first raceway with the second raceway is to closing and is formed the roll space, through the rolling element mounting hole to install the rolling element rather than matching in the roll space, with the outer sleeve rotationally connects outside the axletree, be located in the outer sleeve the axial both sides and the distance of second raceway the second raceway is set for the interval punishment and is equipped with respectively with the internal spline that external splines on the axle sleeve matees.
According to one embodiment of the invention, the locking device further comprises a locking slip ring, a thrust pin, an elastic piece and a thrust rod;
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 round hole, two ends of the thrust pin are exposed out of the long round 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 first 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;
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 at the open slot, and the other end of the thrust rod extends to the end part of the central through hole.
According to one embodiment of the invention, the vehicle further comprises an unlocking mechanism, wherein the unlocking mechanism is arranged at one end of the vehicle shaft, which is positioned at 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 axle box is external, promote the head with the distance rod sets up relatively.
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;
an annular boss is arranged at the position, where the second rolling way is formed, of the inner periphery of the outer sleeve, and after the outer sleeve is connected with the axle, a pair of installation spaces of the shaft sleeve is formed between the outer sleeve and the axle at two axial sides of the rolling space;
the elastic piece is a locking spring.
One or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:
according to the axle for the track-variable wheel pair, a central through hole is axially formed in the axle, a section of external spline extending along the axial direction of the axle is formed in the periphery of the axle close to the middle of the axle, a section of first non-self-locking threads with opposite turning directions are respectively arranged on the periphery of the axle and positioned on two axial sides of the external spline, an oblong hole penetrating along the radial direction of the axle is formed in the position, positioned on the external spline, of the axle, and the length direction of the oblong hole is along the axial direction of the axle; the axle is provided with a structure with at least one first roller path arranged circumferentially around the axle at a position between one of the first non-self-locking threads and the external spline; make axletree structural design ingenious, guarantee that axletree and wheel connection structure are simple, and the variable track pitch reliability is high.
According to the track-variable wheel pair provided by the embodiment of the invention, by arranging the axle for the track-variable wheel pair, 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.
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 front view of an axle for a track-variable wheelset according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of a shaft sleeve of a track-variable wheel set according to an embodiment of the present invention;
FIG. 3 is an axial sectional structural schematic view of a track-variable wheel set according to an embodiment of the present invention;
fig. 4 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 first 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 second raceway; 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 disk.
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 4, the embodiment of the present invention provides an axle for a track-variable wheelset and a track-variable wheelset.
For clarity of the description of the present invention, the present embodiment describes the axle for the track-changing wheel set in combination with the track-changing wheel set.
Referring to fig. 1 to 4, a track-variable wheelset according to an embodiment of the present invention includes an axle for a track-variable wheelset, an outer sleeve 40, a pair of
Specifically, as shown in fig. 1, a central through
In this embodiment, the length of the
Further, the
In this embodiment, the cross section of the
Specifically, a pair of
The outer sleeve 40 is sleeved outside the
The outer periphery of the second end of the
According to one embodiment of the invention, the
Specifically,
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
Of course, in order to facilitate the
An elastic member such as a locking spring 70 is sleeved on the
One end of the thrust rod 90 penetrates through the central through hole 15 of the axle 10 and abuts against one side of the thrust pin 80, which is located at the open slot, for example, the thrust pin 80 may be provided with a connecting shaft extending to one side, the thrust rod 90 is designed as a hollow rod, the thrust rod 90 is sleeved on the connecting shaft of the thrust pin 80 to realize the fixation of the two, of course, the connecting shaft may also be provided with an external thread, and an inner hole at one end of the thrust rod 90 is provided with an internal thread, which realizes the threaded connection of the two; the other end of the thrust rod 90 extends to the end of the central through hole 15, preferably, the outer end of the thrust rod 90 is substantially flush with the end of the central through hole 15, after the axle housing 50 is lifted by the unlocking rail so that the wheel 30 is unloaded, the thrust rod 90 applies thrust to the thrust pin 80 to drive the locking slip ring 60 to compress the elastic member to move on the axle 10 in the direction away from the inner spline of the outer sleeve 40 so as to disengage from the inner spline of the outer sleeve 40, thereby unlocking the rotational freedom of the outer sleeve 40, at this time, if the wheel 30 is pushed, since the sleeve 20 is connected with the axle 10 through the non-self-locking thread pair, the wheel 30 and the sleeve 20 will rotate together around the axle 10, the second non-self-locking thread of the sleeve 20 moves in rotation along the first non-self-locking thread 14 of the axle 10, so that the wheel 30 moves together with the. After 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
It should be noted that the elastic member may also be other elastic sleeves with certain elasticity.
In order to be able to directly apply thrust to the
Specifically,
After the track distance is changed, the
According to an embodiment of the present invention, an annular boss is disposed at the position where the second raceway 41 is configured on the inner periphery of the outer sleeve 40, after the outer sleeve 40 is connected with the
For a railcar track-changing pair, the outer sleeve 40 externally mounts a
In order to improve the reliability of the connection of the outer sleeve 40 with the
Further, the
For structural optimization, the
According to one embodiment of the invention, the spacing between the
According to one embodiment of the present invention, both axial ends of 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
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 entering a locking section, gradually reducing the unlocking rail and withdrawing the supporting function, moving the locking slide ring 60 and the like outwards under the thrust action of the locking spring 70 and inserting the locking slide ring into the internal spline of the outer sleeve 40 to realize locking again, resetting the
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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