Unlocking mechanism for track-distance-variable wheel set, track-distance-variable wheel set and ground track-changing facility
阅读说明:本技术 变轨距轮对用解锁机构、变轨距轮对及地面变轨设施 (Unlocking mechanism for track-distance-variable wheel set, track-distance-variable wheel set and ground track-changing facility ) 是由 乔青峰 曹庆达 李恒奎 王玉光 蒯荣生 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,提供变轨距轮对用解锁机构、变轨距轮对及地面变轨设施。该解锁机构包括用于水平穿设在变轨距轮对的车轴的轴向通孔中的推力杆和用于推动推力杆解锁变轨距轮对的车轮的推力转换机构,推力转换机构包括安装座和顶推轴,安装座沿水平方向开设有水平通孔;顶推轴可移动地穿设在水平通孔中,顶推轴与安装座的相对处且位于顶推轴与安装座中的一者开设有开口槽,开口槽的轴线垂直于水平通孔的轴线,开口槽中安装有定位件,定位件与开口槽之间通过弹性预紧件连接,顶推轴与安装座中的另一者构造有定位凹坑,定位件的定位端与定位凹坑相匹配,由顶推轴推动推力杆移动对车轮进行解锁。本发明变轨操作简单、变轨距可靠性高。(The invention relates to the field of rail gauge changing of rail vehicles, and provides an unlocking mechanism for a rail gauge changing wheel set, the rail gauge changing wheel set and a ground rail changing facility. The unlocking mechanism comprises a thrust rod horizontally penetrating through an axial through hole of an axle of the variable-gauge wheel pair and a thrust conversion mechanism for pushing the thrust rod to unlock wheels of the variable-gauge wheel pair, wherein the thrust conversion mechanism comprises an installation seat and a pushing shaft, and the installation seat is provided with a horizontal through hole along the horizontal direction; the pushing shaft is movably arranged in the horizontal through hole in a penetrating mode, the opposite position of the pushing shaft and the mounting seat is located, one of the pushing shaft and the mounting seat is provided with an open slot, the axis of the open slot is perpendicular to the axis of the horizontal through hole, a positioning piece is arranged in the open slot, the positioning piece is connected with the open slot through an elastic pre-tightening piece, a positioning pit is formed in the other one of the pushing shaft and the mounting seat, the positioning end of the positioning piece is matched with the positioning pit, and the pushing shaft pushes the thrust rod to move so as to unlock the wheel. The invention has simple track-changing operation and high track pitch-changing reliability.)
1. The unlocking mechanism for the track-variable wheel pair is characterized by comprising a thrust rod horizontally penetrating through an axial through hole of an axle of the track-variable wheel pair and a thrust conversion mechanism for pushing the thrust rod to unlock wheels of the track-variable wheel pair;
the thrust conversion mechanism includes:
the mounting seat is provided with a horizontal through hole along the horizontal direction;
the pushing shaft is movably arranged in the horizontal through hole in a penetrating mode, an open groove is formed in the position, opposite to the mounting seat, of the pushing shaft and is located on one of the pushing shaft and the mounting seat, the axis of the open groove is perpendicular to the axis of the horizontal through hole, a positioning piece is installed in the open groove, the positioning piece is connected with the open groove through an elastic pre-tightening piece, a positioning pit is formed in the other one of the pushing shaft and the mounting seat, and the positioning end of the positioning piece is matched with the positioning pit;
the positioning end of the positioning piece is positioned in the positioning pit, the pushing shaft is in a locking state, the pushing shaft is subjected to thrust to enable the positioning end of the positioning piece to leave the positioning pit, and the pushing shaft is in a movable state;
the pushing shaft and the thrust rod are arranged in a clearance opposite mode, and the pushing shaft pushes the thrust rod to move so as to unlock the wheels.
2. The release mechanism for track-variable wheel sets according to claim 1, further comprising a stop sleeve for fixing to an end of the axle, the stop sleeve being disposed coaxially with the axial through hole, the stop sleeve partially extending into the axial through hole, an inner diameter of the stop sleeve matching an outer diameter of the thrust shaft, the thrust shaft entering the axial through hole from the stop sleeve and pushing the thrust rod;
the positioning section is constructed at one end, opposite to the pushing shaft, of the thrust rod, the diameter of the positioning section is smaller than that of the thrust rod, so that a positioning step surface is formed at the joint of the positioning section and the thrust rod, and the positioning step surface is attached to the end part of the stop sleeve to limit the position of the thrust rod.
3. The unlocking mechanism for track-variable wheel sets according to claim 1, wherein the mounting seat comprises a seat body and an extension seat extending to one side along the seat body, the seat body is connected with the extension seat through a transition connecting seat in a frustum shape, the large end of the transition connecting seat is connected with the seat body, the small end of the transition connecting seat is connected with the extension seat, connecting holes are formed in the periphery of the seat body, and the horizontal through hole penetrates through the extension seat, the transition connecting seat and the seat body.
4. The unlocking mechanism for track-variable wheel sets as claimed in claim 3, wherein the lower side of the extension seat is provided with a notch communicated with the end part of the extension seat;
the outer end of the pushing shaft extends downwards to form a pushing part, and when the positioning end of the positioning piece is positioned in the positioning concave pit, the outer end of the pushing shaft is flush with the outer end of the extending seat;
the pushing part is pushed to enable the positioning end of the positioning piece to leave the positioning concave pit and move along the notch.
5. The unlocking mechanism for track-variable wheel sets as claimed in claim 4, wherein a pushing gland is mounted at the outer end of the extension seat;
the outer end of the pushing shaft is provided with a connecting part which extends downwards and inclines towards the direction far away from the pushing gland, the pushing part is formed at the free end of the connecting part, and the pushing part is provided with a vertical plane.
6. The release mechanism for track-variable wheel sets according to claim 5, wherein a friction block is mounted on the vertical plane of the pushing portion.
7. The unlocking mechanism for track-variable wheel sets according to any one of claims 1 to 6, wherein the positioning member is a positioning pin, the positioning end of the positioning pin is configured as a convex arc surface, and the positioning recess is configured as a concave arc surface matched with the convex arc surface; the convex arc surface part is positioned in the concave arc surface.
8. The unlocking mechanism for the track-variable wheel pair as claimed in claim 7, wherein the elastic pre-tightening piece is a pre-tightening spring, one end of the pre-tightening spring is fastened in the open slot, and the other end of the pre-tightening spring is fastened and sleeved on one end of the positioning pin far away from the positioning end.
9. A track-variable wheelset comprising an axle, a pair of wheels mounted on said axle, and a pair of axle housings mounted on said axle and located outside said wheels, further comprising:
the release mechanism for track-variable wheel sets according to any one of claims 1 to 8, wherein the mounting seat is mounted at an outer end of the axle housing near one end of the thrust rod;
the vehicle axle is provided with an axial through hole, the thrust rod penetrates through the axial through hole, one end, located in the axial through hole, of the thrust rod is connected with the linkage mechanism, and thrust is applied to the thrust rod through the pushing shaft, so that the thrust rod drives the linkage mechanism to unlock the wheels.
10. The pair of track-changing wheels according to claim 9, further comprising:
the wheel mounting seats are arranged on the peripheries of first ends of the shaft sleeves, a section of external spline extending along the axial direction of the shaft sleeves is formed on the peripheries of second ends of the shaft sleeves, a section of first non-self-locking threads are formed on the inner peripheries of the second ends of the shaft sleeves, the rotating directions of the first non-self-locking threads are opposite, and a pair of wheels are fastened on the wheel mounting seats of the shaft sleeves;
two sections of second non-self-locking threads forming a non-self-locking thread pair with the first non-self-locking threads are arranged on the axle at intervals; the wheels are installed on the axle through the shaft sleeves, and the first non-self-locking threads are connected with the second non-self-locking threads in a matched mode.
11. Gauge-changing wheel pair according to claim 10,
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 axle is provided with a long round hole penetrating along the radial direction of the axle at the position of the external spline of the axle, and the length direction of the long round hole is along the axial direction of the axle;
the axle is configured with at least one first raceway disposed circumferentially around the axle at a location between one of the second non-self-locking threads and the external spline of the axle;
still include the outer sleeve, 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 will the outer sleeve rotationally connects outside the axletree, be located in the outer sleeve the axial both sides and the distance of second raceway set for the interval punishment do not be equipped with the internal spline that external spline matches on the axle sleeve.
12. The pair of track-varying wheels according to claim 11, wherein said linkage mechanism comprises a locking slip ring, a thrust pin and a locking elastic member;
the locking slip ring is slidably sleeved at an external spline of the axle, an internal spline matched with the external spline of the axle is arranged in the locking slip ring, an external spline matched with the internal spline of the outer sleeve is arranged outside the locking slip ring, a pair of opening grooves are formed in the inner wall of the locking slip ring along the radial direction, openings of the opening 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, two ends of the thrust pin, which are exposed out of the long round hole, are embedded in the pair of opening grooves through openings of the opening grooves, the locking elastic piece is sleeved on the axle, one end of the locking elastic piece abuts against the outer wall of the first roller path, the other end of the locking elastic piece abuts against the end part, far away from the opening grooves, of the locking slip ring is in a natural state, at least part of the external splines outside the locking slip ring is positioned in the internal splines on the corresponding side of the outer sleeve so as to lock the rotation of the outer sleeve;
one end of the thrust rod penetrates through the axial through hole of the axle and abuts against one side of the thrust pin, which is located on the opening groove, and the other end of the thrust rod is opposite to the pushing shaft.
13. Gauge-changing wheel pair according to claim 12,
the length of the first non-self-locking thread is greater than that of the second 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 locking elastic piece is a locking spring.
14. A ground track-changing facility for applying a track-changing external force to a track-changing wheel pair according to any one of claims 9 to 13, wherein the ground track-changing facility is provided with a driving rail, the length direction of the driving rail is arranged along the running direction of the track-changing wheel pair, and the side surface of the driving rail is provided with a section of unlocking inclined surface.
Technical Field
The invention relates to the technical field of rail gauge changing of rail vehicles, in particular to an unlocking mechanism for a rail gauge changing wheel set, the rail gauge changing wheel set and a ground rail changing facility.
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 conventional track-changing wheel set has a complex track-changing mechanism, complex track-changing operation and low reliability.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the unlocking mechanism for the track-distance-variable wheel pair, which is simple in track-distance-variable operation and high in track-distance-variable reliability.
The invention further provides a track-distance-variable wheel pair.
The invention also provides a ground track transfer facility.
The unlocking mechanism for the track-variable wheel pair comprises a thrust rod horizontally arranged in an axial through hole of an axle of the track-variable wheel pair in a penetrating mode and a thrust conversion mechanism used for pushing the thrust rod to unlock wheels of the track-variable wheel pair;
the thrust conversion mechanism includes:
the mounting seat is provided with a horizontal through hole along the horizontal direction;
the pushing shaft is movably arranged in the horizontal through hole in a penetrating mode, an open groove is formed in the position, opposite to the mounting seat, of the pushing shaft and is located on one of the pushing shaft and the mounting seat, the axis of the open groove is perpendicular to the axis of the horizontal through hole, a positioning piece is installed in the open groove, the positioning piece is connected with the open groove through an elastic pre-tightening piece, a positioning pit is formed in the other one of the pushing shaft and the mounting seat, and the positioning end of the positioning piece is matched with the positioning pit;
the positioning end of the positioning piece is positioned in the positioning pit, the pushing shaft is in a locking state, the pushing shaft is subjected to thrust to enable the positioning end of the positioning piece to leave the positioning pit, and the pushing shaft is in a movable state;
the pushing shaft and the thrust rod are arranged in a clearance opposite mode, and the pushing shaft pushes the thrust rod to move so as to unlock the wheels.
According to one embodiment of the invention, the thrust rod further comprises a stop sleeve, the stop sleeve is used for being fixed at the end part of the axle, the stop sleeve is coaxially arranged with the axial through hole, part of the stop sleeve extends into the axial through hole, the inner diameter of the stop sleeve is matched with the outer diameter of the thrust shaft, and the thrust shaft enters the axial through hole from the stop sleeve and pushes the thrust rod;
the positioning section is constructed at one end, opposite to the pushing shaft, of the thrust rod, the diameter of the positioning section is smaller than that of the thrust rod, so that a positioning step surface is formed at the joint of the positioning section and the thrust rod, and the positioning step surface is attached to the end part of the stop sleeve to limit the position of the thrust rod.
According to an embodiment of the invention, the mounting seat comprises a seat body and an extension seat extending to one side along the seat body, the seat body is connected with the extension seat through a transition connecting seat in a frustum shape, the large end of the transition connecting seat is connected with the seat body, the small end of the transition connecting seat is connected with the extension seat, connecting holes are formed in the periphery of the seat body, and the horizontal through hole penetrates through the extension seat, the transition connecting seat and the seat body.
According to one embodiment of the invention, the lower side of the extension seat is provided with a notch communicated with the end part of the extension seat;
the outer end of the pushing shaft extends downwards to form a pushing part, and when the positioning end of the positioning piece is positioned in the positioning concave pit, the outer end of the pushing shaft is flush with the outer end of the extending seat;
the pushing part is pushed to enable the positioning end of the positioning piece to leave the positioning concave pit and move along the notch.
According to one embodiment of the invention, the outer end of the extension seat is provided with a pushing gland;
the outer end of the pushing shaft is provided with a connecting part which extends downwards and inclines towards the direction far away from the pushing gland, the pushing part is formed at the free end of the connecting part, and the pushing part is provided with a vertical plane.
According to one embodiment of the invention, a friction block is mounted on the vertical plane of the pushing part.
According to one embodiment of the invention, the positioning piece is a positioning pin, the positioning end of the positioning pin is configured as a convex arc surface, and the positioning concave pit is configured as a concave arc surface matched with the convex arc surface; the convex arc surface part is positioned in the concave arc surface.
According to one embodiment of the invention, the elastic pre-tightening piece is a pre-tightening spring, one end of the pre-tightening spring is fastened in the open slot, and the other end of the pre-tightening spring is fastened and sleeved on one end of the positioning pin far away from the positioning end.
A track-variable wheel pair according to an embodiment of a second aspect of the present invention includes an axle, a pair of wheels mounted on the axle, and a pair of axle housings mounted on the axle and located outside the wheels, and further includes:
according to the unlocking mechanism for the variable-track wheel pair, the mounting seat is mounted at the outer end of the axle box body close to one end of the thrust rod;
the vehicle axle is provided with an axial through hole, the thrust rod penetrates through the axial through hole, one end, located in the axial through hole, of the thrust rod is connected with the linkage mechanism, and thrust is applied to the thrust rod through the pushing shaft, so that the thrust rod drives the linkage mechanism to unlock the wheels.
According to an embodiment of the present invention, further comprising:
the wheel mounting seats are arranged on the peripheries of first ends of the shaft sleeves, a section of external spline extending along the axial direction of the shaft sleeves is formed on the peripheries of second ends of the shaft sleeves, a section of first non-self-locking threads are formed on the inner peripheries of the second ends of the shaft sleeves, the rotating directions of the first non-self-locking threads are opposite, and a pair of wheels are fastened on the wheel mounting seats of the shaft sleeves;
two sections of second non-self-locking threads forming a non-self-locking thread pair with the first non-self-locking threads are arranged on the axle at intervals; the wheels are installed on the axle through the shaft sleeves, and the first non-self-locking threads are connected with the second non-self-locking threads in a matched mode.
According to one embodiment of the invention, the outer periphery of the axle near the middle part is configured with a section of external splines extending along the axial direction of the axle, the axle is provided with an oblong hole penetrating along the radial direction of the axle at the position of the external splines of the axle, and the length direction of the oblong hole is along the axial direction of the axle;
the axle is configured with at least one first raceway disposed circumferentially around the axle at a location between one of the second non-self-locking threads and the external spline of the axle;
still include the outer sleeve, 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 will the outer sleeve rotationally connects outside the axletree, be located in the outer sleeve the axial both sides and the distance of second raceway set for the interval punishment do not be equipped with the internal spline that external spline matches on the axle sleeve.
According to one embodiment of the invention, the linkage mechanism comprises a locking slip ring, a thrust pin and a locking elastic piece;
the locking slip ring is slidably sleeved at an external spline of the axle, an internal spline matched with the external spline of the axle is arranged in the locking slip ring, an external spline matched with the internal spline of the outer sleeve is arranged outside the locking slip ring, a pair of opening grooves are formed in the inner wall of the locking slip ring along the radial direction, openings of the opening 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, two ends of the thrust pin, which are exposed out of the long round hole, are embedded in the pair of opening grooves through openings of the opening grooves, the locking elastic piece is sleeved on the axle, one end of the locking elastic piece abuts against the outer wall of the first roller path, the other end of the locking elastic piece abuts against the end part, far away from the opening grooves, of the locking slip ring is in a natural state, at least part of the external splines outside the locking slip ring is positioned in the internal splines on the corresponding side of the outer sleeve so as to lock the rotation of the outer sleeve;
one end of the thrust rod penetrates through the axial through hole of the axle and abuts against one side of the thrust pin, which is located on the opening groove, and the other end of the thrust rod is opposite to the pushing shaft.
According to one embodiment of the invention, the length of the first non self-locking thread is greater than the length of the second 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 locking elastic piece is a locking spring.
According to the embodiment of the third aspect of the invention, the ground track-changing facility is used for applying track-changing external force to the track-changing wheel pair, the ground track-changing facility is provided with the driving rail, the length direction of the driving rail is arranged along the running direction of the track-changing wheel pair, and the side surface of the driving rail is provided with the unlocking inclined surface.
One or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:
the unlocking mechanism comprises a thrust rod horizontally penetrating through an axial through hole of an axle of the variable-gauge wheel set and a thrust conversion mechanism for pushing the thrust rod, the thrust conversion mechanism comprises an installation seat and a pushing shaft axially penetrating through the installation seat, the installation seat is fixedly installed outside an axle box body, a gap between the pushing shaft and the thrust rod is arranged oppositely, when the axial thrust is applied to the pushing shaft by a driving rail side wall of a ground track-changing facility, the pushing shaft pushes the thrust rod to move to unlock the wheel, the track-changing operation is simple, and the variable-gauge reliability is high.
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 structural diagram of a front view of a shaft sleeve in a track-variable wheel set according to an embodiment of the invention;
FIG. 2 is an axial cross-sectional schematic view of FIG. 1;
FIG. 3 is a schematic perspective view of a shaft sleeve of a track-variable wheel set according to an embodiment of the present invention;
FIG. 4 is a schematic front view of an axle of a track-changing wheel pair 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 cross-sectional structural schematic view of another variable gauge wheel set according to an embodiment of the present invention;
fig. 7 is a partially enlarged view of a in fig. 6.
Reference numerals:
10. an axle; 11. an outer spline of the axle; 12. a long round hole; 13. a first raceway; 14. a second non self-locking thread; 15. an axial through hole; 20. a shaft sleeve; 21. a first non self-locking thread; 22. an external spline of the shaft sleeve; 23. a sliding bearing mounting groove; 24. a wheel mount; 25. a sliding bearing gland mounting groove; 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; 90-1, a positioning section; 100. a thrust conversion mechanism; 101. a mounting seat; 101-1, a base; 101-2, a transition connecting seat; 101-3, an extension seat; 102. pushing the shaft; 102-1, a pushing part; 103. positioning pins; 104. pre-tightening the spring; 105. a friction block; 106. pushing the gland; 107. a stop sleeve; 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 7, an embodiment of the present invention provides an unlocking mechanism for a track-variable wheel set and a track-variable wheel set.
For clarity of the description of the present invention, the present embodiment describes the release mechanism for the variable-gauge wheel set in combination with the variable-gauge wheel set.
As shown in fig. 4 to 7, the track-variable wheel set according to the embodiment of the present invention includes an unlocking mechanism for a track-variable wheel set (simply referred to as an unlocking mechanism in the present invention), a
As shown in fig. 1 to 3, a
The second end of the
Specifically, the length of the first non-self-locking
According to an embodiment of the present invention, as shown in fig. 1 to 3, a sliding
According to an embodiment of the present invention, the inner circumference of the
According to an embodiment of the present invention, the first end portion of the
For structural optimization, according to one embodiment of the present invention, the outer surface of the
Specifically, as shown in fig. 4 to 7, the axle 10 is provided with an axial through hole 15 arranged along the axial direction, the outer periphery of the axle 10 near the middle portion is configured with a section of external spline extending along the axial direction of the axle 10, the outer periphery of the axle 10 located at two axial sides of the external spline 11 of the axle is respectively provided with a section of second non-self-locking thread 14 with opposite turning directions, that is, the axle 10 is further provided with two sections of second non-self-locking threads 14 with opposite turning directions, the two sections of second non-self-locking threads 14 are respectively arranged at two axial sides of the external spline, certainly, a space is reserved between each section of the second non-self-locking thread 14 and the outer spline 11 of the axle, the axle 10 is provided with an oblong hole 12 which penetrates through the axle in the radial direction at the position of the outer spline 11 of the axle, that is, the oblong hole 12 and the outer spline are arranged in a superposition mode, and the length direction of the oblong hole 12 is along the axial direction of the axle 10, that is, the length direction of the oblong hole 12 is consistent with the extending direction of the outer spline 11 of the axle.
Furthermore, the provision of the
Further, the
In this embodiment, the cross section of the
The outer sleeve 40 is sleeved outside the axle 10, the inner periphery of the outer sleeve 40 is provided with a second rolling way 41 corresponding to the first rolling way 13, and the size and the shape of the second rolling way 41 are consistent with those of the first rolling way 13; the second roller path 41 is provided with a roller body mounting hole, the first roller path 13 and the second roller path 41 are matched to form a rolling space, the rolling space is in a ring shape, the roller body 42 is arranged in the rolling space through the roller body mounting hole, the outer diameter of the roller body 42 is matched with the inner diameter of the rolling space, the roller body 42 can be a ball which fills the rolling space, and a sealing plug is arranged at the roller body mounting hole to prevent impurities such as dust from entering the rolling space; by connecting the outer sleeve 40 with the axle 10 via the rolling bodies 42, the outer sleeve 40 is rotatably connected outside the axle 10, in other words, such that the outer sleeve 40 has a degree of freedom of rotation, but the degree of freedom of movement of the outer sleeve 40 is limited, that is, such that the outer sleeve 40 can rotate but cannot move relative to the axle 10.
As shown in fig. 1, the second end of the
According to one embodiment of the invention, as shown in fig. 4, the
Specifically,
Specifically, as shown in fig. 6 to 7, the
Specifically, the mounting seat 101 is configured to be mounted at an axially outer end of the
Specifically, the mounting seat 101 is provided with a horizontal through hole along the horizontal direction; the pushing
The axis of the open slot is perpendicular to the axis of the horizontal through hole, the positioning part is installed in the open slot, the positioning part is connected with the open slot through the elastic pre-tightening part, so that the positioning part can move along the axis of the positioning part to a certain extent, and the other one of the pushing
Further, the positioning end of the positioning member is matched with the positioning concave, for example, when the positioning end of the positioning member is a spherical surface, the positioning concave is a matched spherical surface, and the two spherical surfaces are matched.
When the positioning end of the positioning element is located in the positioning pit, the pushing
According to an embodiment of the present invention, as shown in fig. 6, the mounting seat 101 includes a seat body 101-1 and an extension seat 101-3 extending along one side of the seat body 101-1, the seat body 101-1 and the extension seat 101-3 are connected by a transition connection seat 101-2 in a frustum shape, a large end of the transition connection seat 101-2 is connected with the seat body 101-1, and a small end of the transition connection seat 101-2 is connected with the extension seat 101-3 to form a structure with a large end and a small end, which can reasonably avoid and match with a ground track-changing facility.
Furthermore, connecting holes are formed in the periphery of the seat body 101-1, and the seat body 101-1 is installed at the outer end of the
In this embodiment, the base 101-1 is plate-shaped, and the extension base 101-3 is cylindrical. The lower side of the extension seat 101-3 is provided with a notch which is communicated with the end part of the extension seat, and the notch can be formed by cutting off a section of side wall corresponding to a minor arc from the end part of the extension seat 101-3 along the axial direction; the specific length of the cut-out is set according to the length of the required gauge change.
When the positioning end of the positioning piece is positioned in the positioning concave pit, the outer end of the pushing
Specifically, the pushing portion 102-1 is pushed laterally until the positioning end of the positioning member leaves the positioning recess and moves along the notch, and the movable length is equal to the length of the notch.
According to an embodiment of the present invention, as shown in fig. 6 to 7, the outer end of the extension seat 101-3 is provided with a pushing
The outer end of the pushing
According to one embodiment of the invention, the
According to one embodiment of the present invention, the positioning member is a
According to an embodiment of the present invention, the elastic pre-tightening member may be a
According to one embodiment of the invention, in the track-variable wheel centering, one end of the
In one embodiment, the linkage mechanism includes a locking slide ring 60, a thrust pin 80, and a locking spring. Specifically, the locking slip ring 60 is slidably sleeved on the
Of course, in order to facilitate the thrust pin 80 to be able to move in the axial direction of the
When the locking elastic member is in a natural state, at least part of the external splines of the locking slip ring 60 are located in the internal splines of the corresponding side of the outer sleeve 40, and the internal splines of the locking slip ring 60 are engaged with the
One end of the
After the track distance is changed, the ground track changing facility does not apply thrust to the
In this embodiment, the end of the
In order to ensure that 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 locking elastic member may also be other elastic sleeves with certain elasticity.
According to an embodiment of the present invention, an annular boss is provided at the position where the outer sleeve 40 is configured with the second raceway 41 on the inner circumference, the second raceway 41 is formed on the annular boss, after the outer sleeve 40 is connected with the
For a railcar track-changing pair, the outer sleeve 40 externally mounts a gear box 120, and for a trailer track-changing pair, the outer sleeve 40 externally mounts a plurality of spaced apart brake discs 130.
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 second non-self-locking
On the other hand, the ground track-changing facility provided by the embodiment of the invention is used for applying a track-changing external force to a track-changing wheel pair, the ground track-changing facility is provided with a driving rail, the length direction of the driving rail is arranged along the running direction of the track-changing wheel pair, the side surface of the driving rail is provided with a section of unlocking inclined surface, of course, the side surface is one side close to the track-changing wheel pair, the inclined direction of the unlocking inclined surface inclines towards the side close to the track-changing wheel pair along the running direction, so that the outer end of a pushing
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 wheel 30 moves inwards (or outwards) under the action of a variable-track-pitch transverse force, and the wheel 30 and 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 to be inserted into the internal spline of the outer sleeve 40 to realize locking again, resetting the pushing
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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