CN111703456A - Wheel pair assembly and track-distance-variable bogie - Google Patents
Wheel pair assembly and track-distance-variable bogie Download PDFInfo
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- CN111703456A CN111703456A CN202010521939.8A CN202010521939A CN111703456A CN 111703456 A CN111703456 A CN 111703456A CN 202010521939 A CN202010521939 A CN 202010521939A CN 111703456 A CN111703456 A CN 111703456A
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- Prior art keywords
- positioning
- axle
- sleeve
- bush
- sliding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F3/00—Types of bogies
- B61F3/16—Types of bogies with a separate axle for each wheel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F7/00—Rail vehicles equipped for use on tracks of different width
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H1/00—Applications or arrangements of brakes with a braking member or members co-operating with the periphery of the wheel rim, a drum, or the like
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Braking Arrangements (AREA)
- Bearings For Parts Moving Linearly (AREA)
Abstract
The invention belongs to the technical field of railway vehicles, and particularly relates to a wheel set assembly and a track-variable bogie. The wheel pair assembly comprises an axle, two wheels and two locking mechanisms, the locking mechanisms correspond to the wheels one to one, the two wheels are oppositely arranged at two axial ends of the axle through the corresponding locking mechanisms respectively, and the distance between the two wheels and the axle can be changed by operating the locking mechanisms. According to the track-distance-variable bogie disclosed by the invention, when the track is changed, the friction between the wheels and the axle is mainly between the sliding sleeve and the positioning bushing, and the wheel set can be quickly recovered to a use state by replacing parts during maintenance, so that the maintenance efficiency is improved; and each wearing and tearing piece all can separate into independent accessory, can change alone according to the condition during the maintenance, reduces cost of maintenance, and in addition, the operation during the orbit transfer can the labeling operation, has fine practicality.
Description
Technical Field
The invention belongs to the technical field of railway vehicles, and particularly relates to a wheel set assembly and a track-variable bogie.
Background
With the rapid development of global economy integration, the transnational passenger and cargo transportation is rapidly increased in recent years, however, due to the fact that the rail gauges of railways of various countries are different, serious obstacles are caused to transnational railway transportation, and the transportation problem of different rail gauges is of great significance.
In the prior art, measures for solving the problem of combined transportation of railways with different track gauges mainly comprise four measures of unifying a line, transporting and exchanging a running part and adopting a track gauge-variable bogie, wherein the current common measure is to adopt a method of transporting and exchanging the running part, so that a large field is occupied, manpower is required to be matched, and the track-changing efficiency is low. The method for unifying the lines can fundamentally solve the problem of gauge difference, but has high investment cost and long construction period. The track gauge changing bogie technology is a technology for adjusting the inner side gauge of a wheel through a special mechanism to adapt to different track gauges, and has great advantages in track changing efficiency.
However, the maintenance workload of the track-variable bogie in the prior art is large, the standardized operation degree is low, and the prior art has limitations, so that the prior art needs to be improved to improve the maintainability of the track-variable bogie and ensure the stability during operation, which is a difficult problem to be solved urgently.
Disclosure of Invention
In view of the problems in the prior art, the invention provides a wheel set assembly and a track-variable bogie, so as to improve the maintainability of the track-variable bogie and ensure the stability during operation.
The invention realizes the purpose through the following technical scheme:
firstly, the invention discloses a wheel set assembly, which comprises an axle, two wheels and two locking mechanisms, wherein the locking mechanisms correspond to the wheels one by one, the two wheels are oppositely arranged at two axial ends of the axle through the corresponding locking mechanisms respectively, and the distance between the two wheels and the axle can be changed by operating the locking mechanisms;
each of the locking mechanisms includes:
a locating bushing fixedly disposed on an axial end of the axle, the locating bushing having opposed first and second ends;
the sliding sleeve is fixedly arranged in the corresponding shaft hole of the wheel, the sliding sleeve is arranged at the first end of the positioning bush, the sliding sleeve can move along the axial direction of the axle in an operable manner, and a plurality of positioning grooves are formed in the outer side of the peripheral surface of the sliding sleeve at intervals along the axial direction of the sliding sleeve;
the stop collar, the stop collar has relative first end and second end, the first end of stop collar is fixed to be set up on the second end of location bush, the second end of stop collar is optionally fixed connection in multichannel arbitrary one in the location slot on the location slot.
Furthermore, a plurality of pin holes are formed in the circumferential surface of the limiting sleeve, a positioning ring is formed by the pin holes in a surrounding mode, the positioning ring and the axle are concentric to a central shaft, and the pin holes can selectively move to the radial outer side of any one positioning groove in the plurality of positioning grooves;
the locking mechanism further comprises a plurality of positioning pins, the positioning pins and the pin holes are arranged in a one-to-one correspondence mode, and the positioning pins movably penetrate through the corresponding pin holes and stretch into the positioning grooves located on the radial inner sides of the positioning rings.
Preferably, the positioning pin comprises a cylindrical body and a conical body, the cylindrical body movably penetrates through the pin hole corresponding to the positioning pin, the conical body is fixedly arranged at the end part of the cylindrical body, and the conical body extends into the positioning groove on the radial inner side of the positioning ring in a clearance fit manner.
Preferably, the positioning groove has a V-shaped cross section.
Further, the positioning pin is provided with a through exhaust hole along the axial direction.
Further, the positioning bush comprises a sliding shaft sleeve, the sliding shaft sleeve is a first end of the positioning bush, the sliding shaft sleeve is fixedly arranged on an axial end portion of the axle, a first key groove is formed in the outer side of the peripheral surface of the sliding shaft sleeve, the sliding sleeve is arranged on the sliding shaft sleeve in a sliding mode, a second key groove is formed in the inner side of the peripheral surface of the sliding sleeve, the first key groove and the second key groove are parallel to the central axis of the axle, and the length of the second key groove is larger than that of the first key groove;
the locking mechanism further comprises a locking key, one side of the locking key is fixedly arranged in the first key groove, and the other side of the locking key is arranged in the second key groove in a sliding mode.
Furthermore, the positioning bush still includes shoulder axle sleeve, shoulder axle sleeve does positioning bush's second end, shoulder axle sleeve is fixed to be set up the axial tip of axletree, shoulder axle sleeve is coaxial to be set up the one end of slip axle sleeve, shoulder axle sleeve's radius is greater than the radius of slip axle sleeve, the first end of stop collar is fixed to be set up on the shoulder axle sleeve.
Further, the positioning bushing further comprises a mounting disc, the mounting disc is fixedly arranged at the axial end of the axle, the shoulder shaft sleeve is coaxially arranged between the sliding shaft sleeve and the mounting disc, and the radius of the mounting disc is larger than that of the shoulder shaft sleeve;
the locking mechanism further comprises:
the touch ring is movably sleeved on the limiting sleeve and can move to the outer side of the pin holes on the peripheral surface of the limiting sleeve in an operable mode;
and the locking spring is sleeved on the limiting sleeve and is positioned between the touch ring and the limiting sleeve.
Furthermore, a second end of the limiting sleeve is provided with a limiting disc;
the touching ring includes ring body and location arch, the protruding setting in location is in the global inboard of ring body, the protruding operativelyremoves to a plurality of in location the outside of locating pin, the protruding face in location is the inclined plane to one side of spacing dish, works as the protruding removal of location is a plurality of during the outside of locating pin, the protruding top in location is leaned on the spacing dish.
On the other hand, the invention also provides a track-distance-variable bogie which comprises the wheel pair assembly.
The invention has the beneficial effects that:
the invention discloses a track-distance-variable bogie, wherein two wheels formed by wheel pairs of the bogie are oppositely arranged at two axial ends of an axle through corresponding locking mechanisms respectively, the distance between the two wheels and the axle can be changed by operating the locking mechanisms, when the distance between the two wheels formed by the wheel pairs of the bogie needs to be adjusted, a sliding sleeve is firstly operated to move to a proper position along the axial direction of the axle, so that the distance between the two wheels formed by the wheel pairs meets the requirement, and then the second end of a limiting sleeve is fixedly connected to one positioning groove in a plurality of positioning grooves, so that the wheels and the axle can be relatively fixedly locked, namely, the aim of distance change of the bogie is fulfilled, and the problem of railway combined transportation at different track distances is solved.
According to the track-distance-variable bogie disclosed by the invention, when the track is changed, the friction between the wheels and the axle is mainly between the sliding sleeve and the positioning bushing, and the wheel set can be quickly recovered to a use state by replacing parts during maintenance, so that the maintenance efficiency is improved; and each wearing and tearing piece all can separate into independent accessory, can change alone according to the condition during the maintenance, reduces cost of maintenance, and in addition, the operation during the orbit transfer can the labeling operation, has fine practicality.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a track-pitch-variable bogie according to an embodiment of the present invention;
FIG. 2 is a schematic top view of FIG. 1;
FIG. 3 is a side view of FIG. 1;
FIG. 4 is a schematic view of the wheelset assembly of FIG. 1;
FIG. 5 is a schematic cross-sectional view of FIG. 4;
FIG. 6 is a schematic view of the alignment sleeve of FIG. 4;
FIG. 7 is a schematic structural view of the sliding sleeve of FIG. 4;
FIG. 8 is a schematic structural view of the stop collar of FIG. 4;
FIG. 9 is a schematic diagram of the axlebox suspension of FIG. 1;
FIG. 10 is a schematic structural view of the framework assembly of FIG. 1;
fig. 11 is a schematic structural view of the braking device in fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a track pitch changing bogie.
Fig. 1 is a schematic structural view of a track-pitch-variable bogie according to an embodiment of the present invention, fig. 2 is a schematic top view of fig. 1, and fig. 3 is a schematic side view of fig. 1. With reference to fig. 1-3, the bogie of the embodiment of the present invention includes a frame and two wheel set assemblies 1, and the two wheel set assemblies 1 are oppositely disposed on the frame 4.
Fig. 4 is a schematic view of the wheel set assembly structure in fig. 1, fig. 5 is a schematic cross-sectional view of fig. 4, and with reference to fig. 4 and fig. 5, the wheel set assembly 1 according to the embodiment of the present invention includes an axle 102, two wheels 101, and two locking mechanisms, where the locking mechanisms correspond to the wheels 101 one to one, the two wheels 101 are respectively disposed on two axial ends of the axle 102 through the corresponding locking mechanisms, and by operating the locking mechanisms, the distance between the two wheels on the axle 102 can be changed, so as to solve the problem of railway intermodal transportation at different track gauges.
Referring to fig. 4 and 5, in the embodiment of the present invention, each locking mechanism includes a positioning bushing 103, a sliding sleeve 104, and a position-limiting sleeve 105.
Fig. 6 is a schematic structural view of the locating bush of fig. 4, and in conjunction with fig. 4-6, the locating bush 103 of the embodiment of the present invention is fixedly disposed on an axial end portion of the axle 102, and the locating bush 103 has opposite first and second ends.
Specifically, in the embodiment of the present invention, the first end of the positioning bushing 103 is the outer end of the positioning bushing 103, and the second end of the positioning bushing 103 is the inner end of the positioning bushing 103.
In order to facilitate disassembly and repair, in the embodiment of the invention, the first end of the positioning bushing 103 can be press-fitted on the wheel seat of the axle 102 in an interference fit manner, so that the positioning bushing 103 can be quickly disassembled from the wheel seat of the axle 102, and the method is convenient and quick and has good practicability.
Fig. 7 is a schematic structural diagram of the sliding sleeve in fig. 4, and in combination with fig. 4, 5 and 7, a sliding sleeve 104 according to an embodiment of the present invention is fixedly disposed in a shaft hole of a corresponding wheel 101, the sliding sleeve 104 is disposed on a first end of a positioning bush 103, the sliding sleeve 104 is operable to move in an axial direction of the axle 102, and a plurality of positioning grooves 104-1 are disposed at intervals along the axial direction of the sliding sleeve 104 on an outer side of a circumferential surface of the sliding sleeve 104.
In order to facilitate disassembly and repair, in the embodiment of the invention, the sliding sleeve 104 can be press-fitted in the shaft hole of the wheel 101 in an interference fit manner, and two ends of the sliding sleeve 104 protrude out of the shaft hole of the wheel 101, so that the positioning bushing 103 can be quickly disassembled from the wheel seat of the axle 102, and the invention is convenient and quick and has good practicability.
Fig. 8 is a schematic structural diagram of the position limiting sleeve in fig. 4, and in combination with fig. 4 and 8, a position limiting sleeve 105 according to an embodiment of the present invention has a first end and a second end opposite to each other, the first end of the position limiting sleeve 105 is fixedly disposed on the second end of the positioning bushing 103, and the second end of the position limiting sleeve 105 is selectively and fixedly connected to any one positioning groove 104-1 of the plurality of positioning grooves 104-1.
Specifically, in the embodiment of the present invention, the first end of the position-limiting sleeve 105 is the inner end of the position-limiting sleeve 105, and the second end of the position-limiting sleeve 105 is the outer end of the position-limiting sleeve 105.
When the distance between two wheels 101 formed by wheel sets of the bogie needs to be adjusted, the sliding sleeve 104 is operated to move to a proper position along the axial direction of the axle 102, and the sliding sleeve 104 is fixedly arranged in the shaft hole of the corresponding wheel 101, so that the two wheels 101 of the wheel set 1 can move oppositely or reversely, the distance between the two wheels 101 of the wheel set 1 meets the requirement, and then the second end of the limiting sleeve 105 is fixedly connected to one positioning groove 104-1 of the plurality of positioning grooves 104-1, so that the relative fixing and locking of the wheels 101 and the axle 102 can be completed, namely, the purpose of changing the distance of the bogie is achieved, and the problem of combined transportation of railways with different track pitches is solved.
Referring to fig. 4-7, in the embodiment of the present invention, the positioning bush 103 includes a sliding bush 103-1 and a shoulder bush 103-2, which are connected to each other from outside to inside and fixedly disposed on the axial end portion of the axle 102, and the two are of an integrally formed structure, the radius of which increases from outside to inside, the sliding bush 103-1 is a first end of the positioning bush 103, and the shoulder bush 103-2 is a second end of the positioning bush 103, the sliding bush 104 can be fit on the sliding bush 103-1 with a small clearance, so that the sliding bush 104 can move on the sliding bush 103-1 in the axial direction of the axle 102, and the position-limiting bush 105 can be fixedly disposed on the shoulder bush 103-2 with an interference fit.
Further, with reference to fig. 4-7, in the embodiment of the present invention, a first key groove 103-4 is formed on the outer side of the circumferential surface of the sliding sleeve 103-1, the sliding sleeve 104 is slidably disposed on the sliding sleeve 103-1, a second key groove 104-2 is formed on the inner side of the circumferential surface of the sliding sleeve 104, the first key groove 103-4 and the second key groove 104-2 are both parallel to the central axis of the axle 102, and the length of the second key groove 104-2 is greater than the length of the first key groove 103-4; the locking mechanism further comprises a locking key 110, one side of the locking key 110 is fixedly arranged in the first key groove 103-4, and the other side of the locking key 110 is slidably arranged in the second key groove 104-2, so that the sliding sleeve 104 can only move on the sliding shaft sleeve 103-1 along the axial direction of the axle 102 and cannot rotate relatively, and the distance-changing operation can be carried out smoothly.
Further, referring to fig. 4-8, in the embodiment of the present invention, a plurality of pin holes 105-1 are formed on the circumferential surface of the stop collar 105, the plurality of pin holes 105-1 enclose a positioning ring, the positioning ring is concentric with the axle 102, the plurality of pin holes 105-1 are selectively movable to the radial outer side of any one positioning groove 104-1 of the plurality of positioning grooves 104-1, the locking mechanism further includes a plurality of positioning pins 106, the positioning pins 106 and the pin holes 105-1 are arranged in a one-to-one correspondence, and the positioning pins 106 movably pass through the corresponding pin holes 105-1 and extend into the positioning grooves 106 located at the radial inner side of the positioning ring. That is, when the plurality of pin holes 105-1 are operatively moved to the radially outer side of a certain aligning groove 104-1, an inner side pitch of the wheel 101 is determined to accommodate the running of the corresponding gauge railway.
Further, the positioning pin 106 according to the embodiment of the present invention is configured like a bullet head, and includes a cylindrical body movably passing through the pin hole 105-1 corresponding to the positioning pin 106, and a tapered body fixedly disposed at an end of the cylindrical body and inserted into the positioning groove 106 radially inward of the positioning ring with a clearance fit.
In the embodiment of the invention, the cylindrical body can be in transition fit or small clearance fit in the corresponding pin hole 105-1, and the conical body extends into the positioning groove 106 positioned on the radial inner side of the positioning ring, so that the limiting sleeve 105 can be locked on the sliding sleeve 104 to limit the movement of the limiting sleeve 105 on the sliding shaft sleeve 103-1, and further the wheel 101 and the wheel shaft 102 are locked.
The positioning pin 106 of the embodiment of the present invention is provided with a through-hole along its axial direction for discharging air stored in the positioning groove 104-1.
Preferably, in the embodiment of the present invention, the cross-section of the positioning groove 104-1 is V-shaped.
Further, in the embodiment of the present invention, with reference to fig. 4-8, the positioning bushing 103 further includes a mounting plate 103-3, the mounting plate 103-3 is fixedly disposed at an axial end of the axle 102, the shoulder bushing 103-2 is coaxially disposed between the sliding bushing 103-1 and the mounting plate 103-3, a radius of the mounting plate 103-3 is larger than a radius of the shoulder bushing 103-2, and a second end of the position-limiting sleeve 105 is provided with a position-limiting plate, and the position-limiting plate and the position-limiting sleeve 105 are integrally connected to form a flange structure.
With reference to fig. 4-8, the locking mechanism of the embodiment of the present invention further includes a touch ring 107 and a locking spring 109, the touch ring 107 is movably fitted over the position-limiting sleeve 105, the touch ring 107 is operatively moved to the outside of the plurality of pin holes 105-1 on the circumferential surface of the position-limiting sleeve 105, the locking spring 109 is fitted over the position-limiting sleeve 105, and the locking spring 109 is located between the touch ring 107 and the position-limiting sleeve 105.
In the embodiment of the present invention, the touch ring 107 is an annular structure, which can be movably sleeved on the position-limiting sleeve 105 in a clearance fit manner, and the locking spring 109 has a certain pre-compression load in the installation state, which makes the touch ring 107 abut against the position-limiting disk, and at this time, the touch ring 107 just covers the pin hole 105-1 of the position-limiting sleeve 105, so that the positioning pin 106 in the pin hole 105-1 cannot move outwards.
Further, the touch ring 107 of the embodiment of the present invention includes a ring body and a positioning protrusion, the positioning protrusion is disposed on an inner side of a circumferential surface of the ring body, the positioning protrusion is operable to move to an outer side of the plurality of positioning pins 106, a side of the positioning protrusion facing the limiting disc is an inclined surface, and when the positioning protrusion moves to the outer side of the plurality of positioning pins 106, the positioning protrusion abuts against the limiting disc, so that the positioning pins 106 in the limiting pin holes 105-1 cannot move outward.
The wheel set assembly 1 of the bogie shown in the embodiment of the invention can realize releasing and locking actions under the action of a ground touch device, so that the inner side distance of 2 wheels 101 on the wheel set assembly 1 is changed to adapt to running on a rail with a corresponding track gauge, and the process mainly comprises the following steps:
1) the ground touch device is contacted with a touch ring 107, so that the touch ring 107 moves towards the center of the wheel set assembly 1, the locking spring 109 is compressed until the touch ring 107 of the original tightening positioning pin 106 deviates from the top position of the touch ring, and the positioning pin 106 is released;
2) after the positioning pin 106 is released, the ground touch device is contacted with the wheel 101, so that the ground touch device moves towards the inner side of the target wheel at intervals, and the positioning groove 104-1 of the sliding sleeve 104 pushes the positioning pin 107 to move upwards;
3) when the positioning pin 106 passes through the vertex between the two positioning grooves 104-1 of the sliding sleeve 104, the ground touch device is gradually separated from the touch ring 107, the touch ring 107 moves towards the outer side of the wheel set assembly 1 under the action of the locking spring 109, and the inclined surface of the touch ring 107 pushes the positioning pin 106 to move towards the target positioning groove 104-1 in the moving process;
4) when the locating pin 106 drops into the bottom of the target locating groove 104-1 under the push of the touch ring 107, the touch ring 107 passes over the top of the cylindrical section of the locating pin 106 and locks it in the locating groove 104-1, the ground touch device is disengaged from the wheel 101 at this time, the wheel 101 stops moving, and the relative positional relationship of the wheel 101 and the axle 102 is locked again.
Further, in the embodiment of the present invention, a friction ring 108 is further disposed on the mounting plate 103-3 of each positioning bushing 103, the friction ring 108 is in a two-half ring structure and is mounted on the mounting plate 103-3 of the corresponding positioning bushing 103 through a fastener such as a bolt, a nut, an anti-loosening plate, and the like, and the friction ring 108 is used for braking the bogie, and the operation principle of which is described below.
In addition, referring to fig. 1-3, the bogie of the embodiment of the invention further includes a frame 4, two wheel set assemblies 1 are oppositely arranged on the frame 4, an axle of each wheel set assembly 1 is mounted on the frame 4 through a bearing 2, and each bearing 2 is correspondingly provided with an axlebox suspension 3.
Fig. 9 is a schematic structural diagram of the axle box suspension device in fig. 1, and in conjunction with fig. 9, each axle box suspension device 3 according to the embodiment of the present invention further includes a bearing top block 304, a side wear plate, and a bottom wear plate 307 in addition to the conventional axle box 301, a wedge assembly 302, a main friction block 303, a spring assembly 305, and a spring washer 306, specifically, the axle box 301 is provided with a bearing hole for passing the bearing 2, the bearing top block 304 is fixedly disposed at an outer side of the axle box 301, and the bearing top block 304 is disposed at a lower side of the bearing hole, and the bearing top block 304 and the bearing 2 are in clearance fit; a plurality of side wear plates can be arranged at the bottom of the outer side of the axle box 301 at intervals in a welding mode; the bottom wear plate 307 may be fixedly disposed at the bottom of the axle housing 301 by welding. When the bogie performs the track pitch changing action, the ground touch device is in contact with the bottom surface wear plate 307 and bears the vertical load of the whole vehicle through the axle box 301, at the moment, the wheel set assembly 1 does not bear the load any more, so that the resistance of the movement of the wheels 101 during the track pitch changing action is favorably reduced, and meanwhile, the ground touch device is also in contact with the side surface wear plate to bear the transverse load of the vehicle and provide a guiding function.
Fig. 10 is a schematic structural diagram of the frame assembly in fig. 1, and referring to fig. 10, the frame 4 in the embodiment of the present invention is an H-shaped welded structure, and includes a side beam assembly 401, a cross beam assembly 402, and two braking hanging seats 403, where two opposite sides of the cross beam assembly 402 are respectively provided with two braking hanging seats 403, each braking hanging seat 403 is provided with a braking device 5, and the braking devices 5 can control rotation of the wheel pair assembly 1.
In particular, in the embodiment of the present invention, the braking hanging seat 403 may be welded to the opposite sides of the middle portion of the beam assembly 402. Fig. 11 is a schematic structural view of the braking device in fig. 1. Referring to fig. 11, the braking device 5 of the embodiment of the present invention includes a unit brake 501 and a brake shoe 502, the unit brake 501 is mounted on the braking hanger 403 of the frame assembly 4 by bolts, and the brake shoe 502 is mounted on the push rod seat of the unit brake 501; in a braking state, the brake shoe 502 is pushed by the unit brake 501 to abut against the friction ring 108 on the wheel pair assembly 1 to generate braking force; in the release state, the unit brake 501 is retracted and the brake shoe 502 is disengaged from the friction ring 108 on the wheelset assembly 1.
In conclusion, in the track-variable bogie disclosed by the embodiment of the invention, when the track is changed, the friction between the wheels and the axle is mainly between the sliding sleeve and the positioning bush, and the wheel set can be quickly recovered to a use state by replacing parts during maintenance, so that the maintenance efficiency is improved; and each wearing and tearing piece all can separate into independent accessory, can change alone according to the condition during the maintenance, reduces cost of maintenance, and in addition, the operation during the orbit transfer can the labeling operation, has fine practicality.
The above-mentioned embodiments are only for convenience of description of the invention, and are not intended to limit the invention in any way, and those skilled in the art will recognize that the invention can be practiced without departing from the spirit and scope of the invention.
Claims (10)
1. A wheelset assembly, characterized in that the wheelset assembly (1) comprises an axle (102), two wheels (101) and two locking mechanisms, the locking mechanisms correspond to the wheels (101) one by one, the two wheels (101) are respectively oppositely arranged on two axial ends of the axle (102) through the corresponding locking mechanisms, and the distance between the two wheels on the axle (102) can be changed by operating the locking mechanisms;
each of the locking mechanisms includes:
a locating bushing (103), the locating bushing (103) being fixedly disposed on an axial end of the axle (102), the locating bushing (103) having opposing first and second ends;
a sliding sleeve (104), wherein the sliding sleeve (104) is fixedly arranged in a corresponding shaft hole of the wheel (101), the sliding sleeve (104) is arranged on a first end of the positioning bushing (103), the sliding sleeve (104) is operable to move along the axial direction of the axle (102), and a plurality of positioning grooves (104-1) are arranged on the outer side of the peripheral surface of the sliding sleeve (104) at intervals along the axial direction of the sliding sleeve (104);
the limiting sleeve (105) is provided with a first end and a second end which are opposite, the first end of the limiting sleeve (105) is fixedly arranged on the second end of the positioning bushing (103), and the second end of the limiting sleeve (105) is selectively and fixedly connected on any one positioning groove (104-1) in the plurality of positioning grooves (104-1).
2. The wheel set assembly according to claim 1, characterized in that a plurality of pin holes (105-1) are formed in the circumferential surface of the retaining sleeve (105), a plurality of pin holes (105-1) form a positioning ring, the positioning ring and the axle (102) are concentric, and a plurality of pin holes (105-1) are selectively movable to the radial outside of any one of the positioning grooves (104-1) in the plurality of positioning grooves (104-1);
the locking mechanism further comprises a plurality of positioning pins (106), the positioning pins (106) and the pin holes (105-1) are arranged in a one-to-one correspondence mode, and the positioning pins (106) movably penetrate through the corresponding pin holes (105-1) and extend into the positioning grooves (106) located on the radial inner side of the positioning ring.
3. The wheelset assembly according to claim 2, characterized in that the locating pin (106) comprises a cylindrical body which is movably passed through the pin hole (105-1) corresponding to the locating pin (106), and a conical body which is fixedly arranged at the end of the cylindrical body and which projects with a clearance fit into the locating groove (106) radially inside the locating ring.
4. Wheelset assembly according to claim 3, characterized in that the positioning groove (104-1) is V-shaped in cross-section.
5. Wheel-pair assembly according to claim 2, characterized in that the locating pin (106) is provided with a through-going venting hole in its axial direction.
6. Wheel-pair set, according to claim 1, characterized in that said locating bush (103) comprises a sliding bushing (103-1), the sliding shaft sleeve (103-1) is a first end of the positioning bushing (103), the sliding shaft sleeve (103-1) is fixedly arranged on an axial end part of the axle (102), a first key groove (103-4) is arranged on the outer side of the peripheral surface of the sliding shaft sleeve (103-1), the sliding sleeve (104) is arranged on the sliding shaft sleeve (103-1) in a sliding manner, a second key groove (104-2) is arranged on the inner side of the peripheral surface of the sliding sleeve (104), the first key groove (103-4) and the second key groove (104-2) are parallel to the central shaft of the axle (102), the length of the second keyway (104-2) is greater than the length of the first keyway (103-4);
the locking mechanism further comprises a locking key (110), one side of the locking key (110) is fixedly arranged in the first key groove (103-4), and the other side of the locking key (110) is slidably arranged in the second key groove (104-2).
7. The wheel-pair assembly according to claim 6, characterized in that the locating bush (103) further comprises a shoulder bush (103-2), the shoulder bush (103-2) being a second end of the locating bush (103), the shoulder bush (103-2) being fixedly arranged at an axial end of the axle (102), the shoulder bush (103-2) being coaxially arranged at one end of the sliding bush (103-1), the radius of the shoulder bush (103-2) being greater than the radius of the sliding bush (103-1), the first end of the spacing bush (105) being fixedly arranged on the shoulder bush (103-2).
8. The wheelset assembly according to claim 7, characterized in that the locating bushing (103) further comprises a mounting disc (103-3), the mounting disc (103-3) being fixedly arranged at an axial end of the axle shaft (102), the shoulder sleeve (103-2) being coaxially arranged between the sliding sleeve (103-1) and the mounting disc (103-3), the radius of the mounting disc (103-3) being greater than the radius of the shoulder sleeve (103-2);
the locking mechanism further comprises:
a touch ring (107), wherein the touch ring (107) is movably sleeved on the limiting sleeve (105), and the touch ring (107) is operably moved to the outer side of the plurality of pin holes (105-1) on the peripheral surface of the limiting sleeve (105);
the locking spring (109), locking spring (109) suit is in on stop collar (105), locking spring (109) are located touching ring (107) with between stop collar (105).
9. Wheel-pair assembly according to claim 8, characterized in that the second end of the spacing sleeve (105) is provided with a spacing disc;
touching ring (107) are including ring body and location arch, the protruding setting of location is in the global inboard of ring body, the protruding operativelyremoval of location is a plurality of the outside of locating pin (106), the protruding face of location is the inclined plane to one side of spacing dish, works as the protruding removal of location is a plurality of when the outside of locating pin (106), the protruding top of location is leaned on the spacing dish.
10. A track-changing bogie, characterized in that it comprises a wheelset assembly (1) according to any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010521939.8A CN111703456B (en) | 2020-06-10 | 2020-06-10 | Wheel pair assembly and track-distance-variable bogie |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010521939.8A CN111703456B (en) | 2020-06-10 | 2020-06-10 | Wheel pair assembly and track-distance-variable bogie |
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| CN111703456A true CN111703456A (en) | 2020-09-25 |
| CN111703456B CN111703456B (en) | 2021-07-13 |
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| CN111703456B (en) | 2021-07-13 |
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