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 郑静 徐忠宣 王旭 乔青峰 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。解锁机构包括推力杆和推力转换机构,推力转换机构包括安装座,安装座开设有导向通孔并在导向通孔的下方构造有连接端;顶推轴,一端可移动地穿设在导向通孔中,另一端开设有由顶推轴的底面沿竖向延伸的滑槽;摆动体,构造有转动端和顶推端,摆动体安装在顶推轴的下方,转动端与连接端在竖直平面内转动连接,顶推端可转动地设于滑槽中并可沿滑槽竖向滑动;在摆动体受到向上的抬升力,摆动体的转动端绕连接端转动,带动顶推端沿滑槽滑动并朝向靠近安装座的方向转动,以对顶推轴施加轴向推力,推动推力杆移动进行解锁。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 and a thrust conversion mechanism, the thrust conversion mechanism comprises a mounting seat, the mounting seat is provided with a guide through hole, and a connecting end is formed below the guide through hole; one end of the pushing shaft is movably arranged in the guide through hole in a penetrating mode, and the other end of the pushing shaft is provided with a sliding groove which vertically extends from the bottom surface of the pushing shaft; the swinging body is arranged below the pushing shaft, the rotating end is rotatably connected with the connecting end in a vertical plane, and the pushing end is rotatably arranged in the sliding chute and can vertically slide along the sliding chute; when the swinging body is subjected to upward lifting force, the rotating end of the swinging body rotates around the connecting end to drive the pushing end to slide along the sliding groove and rotate towards the direction close to the mounting seat so as to apply axial thrust to the pushing shaft and push the thrust rod to move for unlocking. 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;
the thrust conversion mechanism includes:
the mounting seat is used for being mounted at the axial outer end of an axle box body of the track-variable wheel pair, the mounting seat is provided with a guide through hole coaxial with the axial through hole of the axle, and a connecting end is formed at the position, below the guide through hole, of the mounting seat;
one end of the pushing shaft is movably arranged in the guide through hole in a penetrating mode, and a sliding groove which extends vertically from the bottom surface of the pushing shaft is formed in one end, located outside the guide through hole, of the pushing shaft;
the swinging body is arranged below the pushing shaft, the rotating end is rotatably connected with the connecting end in a vertical plane, and the pushing end is rotatably arranged in the sliding chute and can vertically slide along the sliding chute;
when the swinging body is subjected to upward lifting force, the rotating end of the swinging body rotates around the connecting end to drive the pushing end to slide along the sliding groove and rotate towards the direction close to the mounting seat so as to apply axial thrust to the pushing shaft;
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 release mechanism for track-changing wheel sets according to claim 1, wherein the mounting seat comprises a seat body and an end cover protruding from the seat body to one side, the guide through hole is formed in the end cover, the end cover is symmetrically provided with the connecting ends at two sides below the guide through hole, and each connecting end is configured with a connecting hole extending horizontally and perpendicular to the central axis of the guide through hole;
the swinging body comprises a swinging body and swinging support bodies which are positioned on two opposite sides of the swinging body in the horizontal direction and extend towards the direction of the connecting end, the end part of each swinging support body is provided with the rotating end, and the rotating end is provided with a rotating hole which is coaxial with the connecting hole;
each connecting hole is rotatably connected with the corresponding rotating hole through a rotating shaft.
4. The unlocking mechanism for track-variable wheel sets as claimed in claim 3, wherein the swinging body further comprises a pushing support plate located above the swinging body and extending upwards along the swinging body, and the pushing end is arranged at the top end of the pushing support plate;
the pushing end is a cylinder with an axis vertical to the central axis of the pushing shaft and extending horizontally, and the length of the cylinder is matched with the width of the sliding groove.
5. The unlocking mechanism for track-variable wheel pairs as claimed in claim 3, wherein the length direction of the swinging body is parallel to the axial direction of the pushing shaft, and the bottom of the swinging body is provided with rolling wheels, and the axial direction of the rolling wheels is parallel to the length direction of the swinging body.
6. The unlocking mechanism for track-variable wheel sets as claimed in claim 3, wherein the sliding groove is communicated with the end of the pushing shaft and penetrates in the vertical direction of the pushing shaft;
the pushing shaft is provided with a pair of opposite anti-falling stopping blocks at the opening side wall of the sliding groove.
7. The release mechanism for a track-variable wheel pair according to claim 3, further comprising an elastic positioning mechanism including a chassis and a pair of leaf springs extending along the chassis to the same side;
the chassis is coaxially installed on the end cover, the pair of plate springs are respectively arranged on two sides of the horizontal direction of the pushing shaft, each free end of each plate spring is connected with the end portion of the sliding groove through a swinging rod, one end of each swinging rod is rotatably connected with the corresponding plate spring, and the other end of each swinging rod is rotatably connected with the end portion of the corresponding pushing shaft.
8. The unlocking mechanism for track-variable wheel sets as claimed in claim 7, wherein the length direction of the plate spring is parallel to the axial direction of the pushing shaft, and the plate surface of the plate spring is vertically arranged;
the free end of leaf spring is buckled there is the coupling hook, the pendulum rod is for having the open-ended ring body, the ring body deviates from open-ended one end card is established in the coupling hook, with coupling hook rotatable coupling, the ring body is located the opening part forms a pair of relative card post, the tip that the top pushes away the axle and is equipped with the spout is in a pair of lateral walls of spout is equipped with respectively and link up the connecting hole of lateral wall, every a pair of card post card of ring body is established at every the upper and lower both ends of connecting hole, with connecting hole rotatable coupling.
9. The unlocking mechanism for the track-variable wheel pair as claimed in claim 3, wherein a first groove is formed in the circumferential direction of the pushing shaft, a retaining ring is mounted in the first groove, and the retaining ring is used for being matched with the inner side surface of the end cover to limit the position of the pushing shaft, so that a gap is kept between the pushing shaft and the thrust rod;
at least one second groove is further formed in the circumferential direction of the pushing shaft, the second groove is located between the first groove and one end, provided with the sliding groove, of the pushing shaft, and a sealing ring is mounted in the second groove.
10. 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 a variable-gauge wheel set according to any one of claims 1 to 9, wherein the mounting seat is mounted at an axially outer end of the axle housing near a side where the thrust rod is located;
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.
11. The pair of track-changing wheels according to claim 10, 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.
12. The pair of gauge-changing wheels according to claim 11,
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;
the track-variable wheel pair further comprises an outer sleeve, the outer sleeve is sleeved outside the axle, the inner periphery of the outer sleeve is constructed with a second rolling path corresponding to the first rolling path, the second rolling path is provided with a rolling element mounting hole, the first rolling path and the second rolling path are combined to form a rolling space, and the rolling element mounting hole is used for mounting a rolling element matched with the rolling element in the rolling space so as to connect the outer sleeve rotatably outside the axle, the outer sleeve is internally located on two axial sides of the second rolling path and a distance, and the second rolling path is set for spacing and is respectively provided with an inner spline matched with an outer spline on the axle sleeve.
13. The pair of track-changing wheels according to claim 12, wherein said linkage comprises a locking slip ring, a thrust pin and a locking spring;
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.
14. 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.
15. A ground track-changing facility for applying a track-changing external force to a track-changing wheel pair according to any one of claims 10 to 14, 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 upper surface of the driving rail is provided with an unlocking inclined surface with one ascending end and a descending inclined surface with one transitional connection with the 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;
the thrust conversion mechanism includes:
the mounting seat is used for being mounted at the axial outer end of an axle box body of the track-variable wheel pair, the mounting seat is provided with a guide through hole coaxial with the axial through hole of the axle, and a connecting end is formed at the position, below the guide through hole, of the mounting seat;
one end of the pushing shaft is movably arranged in the guide through hole in a penetrating mode, and a sliding groove which extends vertically from the bottom surface of the pushing shaft is formed in one end, located outside the guide through hole, of the pushing shaft;
the swinging body is arranged below the pushing shaft, the rotating end is rotatably connected with the connecting end in a vertical plane, and the pushing end is rotatably arranged in the sliding chute and can vertically slide along the sliding chute;
when the swinging body is subjected to upward lifting force, the rotating end of the swinging body rotates around the connecting end to drive the pushing end to slide along the sliding groove and rotate towards the direction close to the mounting seat so as to apply axial thrust to the pushing shaft;
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 one embodiment of the invention, the mounting seat comprises a seat body and an end cover protruding outwards from the seat body to one side, the guide through hole is formed in the end cover, the end cover is symmetrically provided with the connecting ends at two sides below the guide through hole, and each connecting end is provided with a connecting hole extending horizontally and perpendicular to the central axis of the guide through hole;
the swinging body comprises a swinging body and swinging support bodies which are positioned on two opposite sides of the swinging body in the horizontal direction and extend towards the direction of the connecting end, the end part of each swinging support body is provided with the rotating end, and the rotating end is provided with a rotating hole which is coaxial with the connecting hole;
each connecting hole is rotatably connected with the corresponding rotating hole through a rotating shaft.
According to an embodiment of the present invention, the swing body further includes a pushing support plate located above the swing body and extending upward along the swing body, and the pushing end is disposed at a top end of the pushing support plate;
the pushing end is a cylinder with an axis vertical to the central axis of the pushing shaft and extending horizontally, and the length of the cylinder is matched with the width of the sliding groove.
According to one embodiment of the invention, the length direction of the swinging body is parallel to the axial direction of the pushing shaft, the bottom of the swinging body is provided with a rolling wheel, and the axial direction of the rolling wheel is parallel to the length direction of the swinging body.
According to one embodiment of the invention, the sliding groove is communicated with the end part of the pushing shaft and penetrates along the vertical direction of the pushing shaft;
the pushing shaft is provided with a pair of opposite anti-falling stopping blocks at the opening side wall of the sliding groove.
According to one embodiment of the invention, the positioning device further comprises an elastic positioning mechanism, wherein the elastic positioning mechanism comprises a chassis and a pair of plate springs extending to the same side along the chassis;
the chassis is coaxially installed on the end cover, the pair of plate springs are respectively arranged on two sides of the horizontal direction of the pushing shaft, each free end of each plate spring is connected with the end portion of the sliding groove through a swinging rod, one end of each swinging rod is rotatably connected with the corresponding plate spring, and the other end of each swinging rod is rotatably connected with the end portion of the corresponding pushing shaft.
According to one embodiment of the invention, the length direction of the plate spring is parallel to the axial direction of the pushing shaft, and the plate surface of the plate spring is vertically arranged;
the free end of leaf spring is buckled there is the coupling hook, the pendulum rod is for having the open-ended ring body, the ring body deviates from open-ended one end card is established in the coupling hook, with coupling hook rotatable coupling, the ring body is located the opening part forms a pair of relative card post, the tip that the top pushes away the axle and is equipped with the spout is in a pair of lateral walls of spout is equipped with respectively and link up the connecting hole of lateral wall, every a pair of card post card of ring body is established at every the upper and lower both ends of connecting hole, with connecting hole rotatable coupling.
According to one embodiment of the invention, a first groove is formed in the circumferential direction of the pushing shaft, a retaining ring is installed in the first groove, and the retaining ring is used for being matched with the inner side surface of the end cover so as to limit the position of the pushing shaft, so that a gap is kept between the pushing shaft and the thrust rod;
at least one second groove is further formed in the circumferential direction of the pushing shaft, the second groove is located between the first groove and one end, provided with the sliding groove, of the pushing shaft, and a sealing ring is mounted in the second groove.
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:
the mounting seat is arranged at the axial outer end of the axle box body close to the side of the thrust rod;
the vehicle axle is provided with an axial through hole along the axial direction, 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 the thrust rod is pushed by the pushing shaft to drive the linkage mechanism to unlock the wheels.
According to an embodiment of the invention, the pair of gauge-changing wheels further comprises: 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;
the track-variable wheel pair further comprises an outer sleeve, the outer sleeve is sleeved outside the axle, the inner periphery of the outer sleeve is constructed with a second rolling path corresponding to the first rolling path, the second rolling path is provided with a rolling element mounting hole, the first rolling path and the second rolling path are combined to form a rolling space, and the rolling element mounting hole is used for mounting a rolling element matched with the rolling element in the rolling space so as to connect the outer sleeve rotatably outside the axle, the outer sleeve is internally located on two axial sides of the second rolling path and a distance, and the second rolling path is set for spacing and is respectively provided with an inner spline matched with an outer spline 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 a track-changing external force to the 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, and the upper surface of the driving rail is provided with an unlocking inclined surface with one ascending end and a descending inclined surface in transitional connection 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, wherein the thrust conversion mechanism comprises an installation seat and a pushing shaft horizontally penetrating through the installation seat, the installation seat is fixedly installed outside an axle box body, the pushing shaft is opposite to the thrust rod, and when a driving rail top surface of a ground variable-gauge facility applies upward lifting force to a swinging body, the upward lifting force is converted into axial thrust to the pushing shaft, so that the pushing shaft pushes the thrust rod to move to unlock the wheel, the rail changing operation is simple, and the variable-gauge wheel set is high in reliability.
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 view of the release mechanism shown in FIG. 5;
FIG. 7 is a schematic perspective view of another embodiment of a variable gauge wheel set according to the present invention;
fig. 8 is a schematic perspective view of the thrust conversion mechanism in fig. 7.
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; 42. a rolling body; 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, end cover; 101-3, a connecting end; 102. pushing the shaft; 102-1, a chute; 103. a swinging body; 103-1, a swinging body; 103-2, a swing support; 103-21, a rotating end; 103-3, a pushing support plate; 103-31, a pushing end; 103-4, rolling wheels; 104. a chassis; 105. a plate spring; 106. a swing rod; 107. a stop sleeve; 108. a retainer ring; 109. a seal ring; 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 8, 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.
The track-variable wheel pair comprises an unlocking mechanism for the track-variable wheel pair, 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 8, 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 axle 10 with the axial through
Further, the axle 10 is configured with at least one first raceway 13 disposed circumferentially around the axle 10 at a location between one of the second non-self-locking threads 14 and the axle's external spline 11, the first raceway 13 being disposed adjacent the axle's external spline 11.
In this embodiment, the cross section of the first raceway 13 is concave and semicircular.
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 axle 10 forms an annular flange at the portion where the first raceway 13 is constructed, the outer diameter of the annular flange being larger than the outer diameter of the remaining portion of the axle 10 to form stopper end surfaces at both axial ends of the annular flange.
Specifically,
The unlocking mechanism of the present embodiment includes a
Specifically, the
Specifically, as shown in fig. 5 to 8, the
Specifically, the mounting seat 101 is configured to be mounted at an axially outer end of an axle box of the track-variable wheel pair, that is, the mounting seat 101 is vertically disposed when being mounted, and for convenience of description, terms such as "horizontal" and "vertical" described below in conjunction with the mounting seat 101 are used as references when the mounting seat 101 is in a mounted state.
The mounting base 101 is provided with a guide through hole extending in the horizontal direction, that is, coaxial with the axial through
One end of the pushing
The swinging
In this embodiment, the sliding groove 102-1 can provide an installation space for the pushing end 103-31.
When the
In a specific embodiment, the mounting base 101 includes a base 101-1 and an end cap 101-2 protruding from the base 101-1 to one side, the guiding through hole is disposed on the end cap 101-2, for structural optimization, the guiding through hole is disposed coaxially with the end cap 101-2, and the end cap 101-2 may be in a frustum shape, although the specific shape of the end cap 101-2 is not limited thereto.
It should be noted that the shape of the seat body 101-1 can be matched with the shape of the axial outer end of the axle box body, in this embodiment, the seat body 101-1 is square and rounded at four corners of the square, so that the installation seat 101 can be installed at the outer end of the axle box body through the seat body 101-1 and directly used as the outer end cover 101-2 of the axle box body by the installation seat 101, and there is no need to additionally provide the outer end cover 101-2 of the axle box body.
In addition, the base body 101-1 is hollow, threaded connection holes connected with the outer end of the shaft box body are formed in the periphery of the base body 101-1, and the base body 101-1 can be a connection flange formed on the periphery of the end cover 101-2.
Further, the end cover 101-2 is symmetrically provided with connecting ends 101-3 at both sides below the guide through hole, and each connecting end 101-3 is configured with a connecting hole extending horizontally and perpendicular to the central axis of the guide through hole;
further, the swinging
In addition, the distance between the outer ends of the two rotating ends 103-21 is matched with the distance between the inner ends of the two connecting ends 101-3, so that the swinging
In a specific embodiment, the swinging
Further, the pushing end 103-31 is configured as a cylinder with an axis perpendicular to the central axis of the pushing
According to an embodiment of the present invention, the swinging body 103-1 may be cylindrical, the length direction of the swinging body 103-1 is parallel to the axial direction of the pushing
In a specific embodiment, the sliding groove 102-1 is communicated with the end of the pushing
In order to enable the pushing end 103-31 to be located in the sliding groove 102-1 without being detached, the pushing
According to one embodiment of the present invention, the elastic positioning mechanism is further comprised, and the elastic positioning mechanism comprises a chassis 104 and a pair of plate springs 105 extending along the chassis 104 to the same side. Specifically, the base plate 104 is annular and is arranged coaxially with the end cover 101-2, and the base plate 104 is fixed to the outer end of the end cover 101-2 through a connecting member.
Specifically, a pair of leaf springs 105 are arranged on two opposite sides, namely radial two ends, on the circumference of the base plate 104, after the base plate 104 is mounted on the end cover 101-2, the pair of leaf springs 105 are respectively arranged on two sides of the pushing
According to an embodiment of the present invention, the length direction of the plate spring 105 is parallel to the axial direction of the pushing
Specifically, the free end of the plate spring 105 is bent to form a connecting hook, the swing rod 106 is a ring body with an opening, and can be bent to form a square ring body with an opening by a steel wire, for example, one end of the ring body away from the opening is clamped in the connecting hook and rotatably connected with the connecting hook, a pair of opposite clamping columns are formed at the opening of the ring body, the end of the pushing
According to an embodiment of the present invention, a first groove is formed in the circumference of the pushing
At least one second groove is further formed in the circumferential direction of the pushing
In this embodiment, the pushing
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
Of course, in order to facilitate the thrust pin 80 to be able to move in the axial direction of the oblong hole 12, the width of the thrust pin 80 is smaller than the length of the oblong hole 12, and the thickness of the thrust pin 80 is smaller than or equal to the width of the oblong hole 12; furthermore, the width of the locking
When the locking elastic member is in a natural state, at least part of the external splines of the locking
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 tip of axletree is fixed with backstop cover 107, backstop cover 107 and the coaxial setting of axial through
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
For a railcar track-changing pair, the
In order to improve the reliability of the connection of the
Further, the axle 10 is divided into a main axle shaft and a sub axle shaft by the first raceway 13, and the portion of the axle 10 provided with the external splines and the oblong hole 12 is the main axle shaft. The locking
For structural optimization, the first 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 second non self-locking threads 14 is equal to the spacing between the annular flange and the adjacent second non self-locking threads 14, and equal to half of the variable track pitch, which is the space for the movement of the first non self-locking
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 second non-self-locking thread 14 and the shaft end of the intermediate shaft, respectively, to facilitate the sliding of the sliding
On the other hand, the ground track-changing facility of the embodiment is used for applying track-changing external force to a track-changing wheel set, 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 set, the upper surface of the driving rail is provided with an unlocking inclined plane with one ascending end and a descending inclined plane with one section in transitional connection with the unlocking inclined plane, when track-changing starts, the driving rail is lifted, the rolling wheel 103-4 and the swinging
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
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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