CN212828386U - Variable gauge bogie - Google Patents

Abstract

The utility model belongs to the technical field of railway vehicle, especially, relate to a variable gauge bogie. The wheel pair assembly comprises a wheel pair assembly, a framework and a braking device, wherein the two wheel pair assemblies are oppositely arranged on the framework, the braking device comprises a unit brake and a brake shoe, the unit brake is fixedly arranged on the side surface of the cross beam assembly, the brake shoe is arranged on a push rod seat of the unit brake, and the brake shoe can be operated to act on a friction ring of a locking mechanism so as to control the rotation of the wheel pair assembly. The utility model provides a arresting gear is the fixed braking mode of relative axletree, and then can avoid the inboard apart from the influence of changing the braking of wheel.

Description

Variable gauge bogie

Technical Field

The utility model belongs to the technical field of railway vehicle, especially, relate to a variable gauge 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.

SUMMERY OF THE UTILITY MODEL

To the problem that above-mentioned prior art exists, the utility model provides a become gauge bogie to improve the maintainability of becoming gauge bogie, and guarantee the stability in operation.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

a track-variable bogie comprises wheel set assemblies, a framework and a braking device, wherein the two wheel set assemblies are oppositely arranged on the framework, and the track-variable bogie comprises:

the frame comprises two side beam assemblies and two cross beam assemblies, the two side beam assemblies are arranged oppositely, the middle parts of the two side beam assemblies are connected through the cross beam assemblies, two opposite sides of each cross beam assembly are respectively provided with a brake device, and the brake devices can control the rotation of the wheel pair assemblies;

the wheel set 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, two ends of the axle formed by each wheel set assembly are rotatably connected to a framework, and the distance between the two wheels and the axle can be changed by operating the locking mechanisms; the locking mechanism comprises a friction ring which is fixedly arranged relative to the axle;

the brake device comprises a unit brake fixedly mounted on the lateral surface of the beam assembly and a shoe block mounted on a push rod seat of the unit brake, the shoe block being operable to act on a friction ring of the locking mechanism to control the rotation of the wheel-set assembly.

Further, 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.

Furthermore, the locating pin comprises a cylindrical body and a conical body, the cylindrical body movably penetrates through the pin hole corresponding to the locating pin, the conical body is fixedly arranged at the end part of the cylindrical body, and the conical body stretches into the locating groove on the radial inner side of the locating ring in a clearance fit mode.

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.

Furthermore, the positioning bushing also comprises a mounting disc which is fixedly arranged at the axial end part 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.

Further, the friction ring is fixedly arranged on the mounting disc of the positioning bushing.

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.

The utility model has the advantages that:

the utility model discloses a track gauge-changing bogie, because two wheels that the wheel pair of bogie is constituteed set up on the axial both ends of axletree relatively through the locking mechanical system that corresponds respectively, through operation locking mechanical system, can make two wheels change the distance between the axletree, reached the purpose of bogie gauge-changing promptly to solve the railway intermodal problem at the different track gauges.

In addition, the track-distance-variable bogie disclosed by the utility model has the advantages that during track change, the friction between the wheels and the axle is mainly between the sliding sleeve and the positioning bush, and during maintenance, the wheel pair can be quickly restored to the use state by replacing parts, 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.

Finally, because locking mechanical system's friction ring is fixed the setting relative to the axletree, and arresting gear fixed mounting is on the side that the crossbeam is constituteed, and the brake shoe is installed on the push rod seat of unit brake, and the brake shoe is operable to be acted on locking mechanical system's friction ring to the rotation that the control wheel is to constituteing, consequently, the utility model provides a arresting gear is the fixed braking mode of relative axletree, and then can avoid the inboard apart from the influence of changing to the braking of wheel.

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 described 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 without creative efforts.

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;

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 described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment of the utility model discloses become gauge bogie.

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, 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, wherein the two wheel set assemblies 1 are relatively disposed on the frame 4.

Fig. 4 is a schematic diagram of the wheel set assembly structure in fig. 1, fig. 5 is a schematic sectional view of fig. 4, with reference to fig. 4 and fig. 5, the wheel set assembly 1 of the embodiment of the present invention includes an axle 102, two wheels 101 and two locking mechanisms, the locking mechanisms and the wheels 101 are in one-to-one correspondence, the two wheels 101 are respectively and oppositely disposed at two axial ends of the axle 102 through the corresponding locking mechanisms, and by operating the locking mechanisms, the distance between the axle 102 of the two wheels can be changed, so as to solve the problem of railway transportation at different track gauges.

With reference 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 stop sleeve 105.

Fig. 6 is a schematic structural view of the positioning bushing in fig. 4, and in conjunction with fig. 4-6, the positioning bushing 103 according to the embodiment of the present invention is fixedly disposed on the axial end portion of the axle 102, and the positioning bushing 103 has a first end and a second end opposite to each other.

In particular to 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 the overhaul, the embodiment of the utility model provides an in, the first end of location bush 103 can adopt interference fit's mode pressure equipment on axletree 102's wheel seat, can demolish location bush 103 from axletree 102's wheel seat fast like this, convenient and fast has fine practicality.

Fig. 7 is a schematic structural diagram of the sliding sleeve in fig. 4, and with reference to fig. 4, fig. 5 and fig. 7, the sliding sleeve 104 of the embodiment of the present invention is fixedly disposed in the shaft hole of the corresponding wheel 101, the sliding sleeve 104 is disposed at the first end of the positioning bushing 103, the sliding sleeve 104 is operable to move axially along 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 the outer side of the circumferential surface of the sliding sleeve 104.

In order to facilitate the overhaul, the embodiment of the utility model provides an in, sliding sleeve 104 can adopt interference fit's mode pressure equipment in the shaft hole of wheel 101, and the both ends of sliding sleeve 104 all stick out the shaft hole of wheel 101, can demolish positioning sleeve 103 from the wheel seat of axletree 102 fast like this, convenient and fast has fine practicality.

Fig. 8 is a schematic structural diagram of the stop collar in fig. 4, and with reference to fig. 4 and 8, the stop collar 105 of the embodiment of the present invention has a first end and a second end opposite to each other, the first end of the stop collar 105 is fixedly disposed on the second end of the positioning bushing 103, and the second end of the stop collar 105 is selectively fixedly connected to any one of the positioning grooves 104-1 in the plurality of positioning grooves 104-1.

In particular, 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.

With reference to fig. 4-7, in the embodiment of the present invention, the positioning bushing 103 includes a sliding shaft sleeve 103-1 and a shoulder shaft sleeve 103-2, which are sequentially connected from outside to inside and fixedly disposed on the axial end portion of the axle 102, the two are integrally formed structures, the radius of the two increases from outside to inside, the sliding shaft sleeve 103-1 is the first end of the positioning bushing 103, the shoulder shaft sleeve 103-2 is the second end of the positioning bushing 103, the sliding sleeve 104 can be closely and loosely fitted on the sliding shaft sleeve 103-1, so that the sliding sleeve 104 can move on the sliding shaft sleeve 103-1 along the axial direction of the axle 102, and the stop collar 105 can be fixedly disposed on the shoulder shaft sleeve 103-2 by interference fit.

Further, with reference to fig. 4-7, in the embodiment of the present invention, a first key groove 103-4 is disposed on the outer side of the circumferential surface of the sliding shaft sleeve 103-1, the sliding shaft sleeve 104 is slidably disposed on the sliding shaft sleeve 103-1, a second key groove 104-2 is disposed on the inner side of the circumferential surface of the sliding shaft 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 form 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.

Furthermore, the positioning pin 106 according to the embodiment of the present invention has a structure similar to a bullet shape, and includes a cylindrical body and a conical body, wherein the cylindrical body movably passes through the pin hole 105-1 corresponding to the positioning pin 106, the conical body is fixedly disposed at the end of the cylindrical body, and the conical body extends into the positioning groove 104-1 located radially inside the positioning ring with a clearance fit.

In the embodiment of the present 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 104-1 located at the radially inner side of the positioning ring, and the stop collar 105 can be locked on the sliding sleeve 104 to limit the movement of the stop collar 105 on the sliding shaft sleeve 103-1, so as to lock the wheel 101 and the wheel shaft 102.

The embodiment of the present invention provides a through-hole in the positioning pin 106 along its axial direction for discharging the 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, with reference to fig. 4-8, in the embodiment of the present invention, 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 sleeve 103-2 is coaxially disposed between the sliding sleeve 103-1 and the mounting plate 103-3, a radius of the mounting plate 103-3 is greater than a radius of the shoulder sleeve 103-2, and a second end of the stop collar 105 is provided with a stop plate, the stop plate and the stop collar 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 sleeved on the stop collar 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 stop collar 105, the locking spring 109 is sleeved on the stop collar 105, and the locking spring 109 is located between the touch ring 107 and the stop collar 105.

The embodiment of the utility model provides an in, touching ring 107 is the annular structure, and it can adopt clearance fit's mode activity suit on stop collar 105, and locking spring 109 has certain precompression load under the mounted state, and this load makes touching ring 107 near on spacing dish, and touching ring 107 just in time covers the pinhole 105-1 of stop collar 105 this moment, makes the unable outside removal of locating pin 106 in the pinhole 105-1.

Further, the utility model discloses touching ring 107 includes ring body and location arch, and the location arch sets up in the global inboard of ring body, and the location arch is operative to be removed to the outside of a plurality of locating pins 106, and the protruding one side of locating to spacing dish is the inclined plane, and when the location arch removed the outside to a plurality of locating pins 106, the protruding top of location was leaned on spacing dish to reach the unable outside removal of locating pin 106 in the above-mentioned restriction pinhole 105-1.

The embodiment of the utility model provides a shown bogie's wheel pair is constituteed 1, can realize release and lock action under the effect of ground touching device to change the inboard interval of 2 wheels 101 on wheel pair constitution 1, go on in the rail that corresponds the gauge of track with the adaptation, this flow is mainly as follows:

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, the embodiment of the present invention further provides a friction ring 108 on the mounting plate 103-3 of each positioning bushing 103, the friction ring 108 is of two semi-ring structures, and is mounted on the mounting plate 103-3 of the corresponding positioning bushing 103 through fasteners such as bolts, nuts, anti-loosening sheets, etc., the friction ring 108 is used for braking the bogie, and the working principle thereof is described below.

In addition, with reference to fig. 1-3, the bogie of the embodiment of the present invention further includes a frame 4, two wheel set assemblies 1 are relatively disposed 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 axle box suspension 3.

Fig. 9 is a schematic structural diagram of the axle box suspension device in fig. 1, and with reference to fig. 9, each axle box suspension device 3 according to an 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 the bearing 2 to pass through, the bearing top block 304 is fixedly disposed on the outer side of the axle box 301, and the bearing top block 304 is disposed on the 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 the structure schematic diagram that the framework in fig. 1 constitutes, combine fig. 10, the utility model discloses a framework 4 is H type welded structure, include that the curb girder constitutes 401, the crossbeam constitutes 402, braking hanging seat 403, curb girder constitutes 401 and is provided with two relatively, the middle part that 401 was constituteed to two curb girders is passed through the crossbeam and is constituteed 402 and connect, wherein, the crossbeam is constituteed 402 and is provided with two braking hanging seats 403 respectively in the both sides that carry on the back mutually, all be provided with a arresting gear 5 on every braking hanging seat 403, the rotation of 1 is constituteed to the steerable wheel pair of arresting gear 5, and the both ends of every wheel pair axle 102 who constitutes 1 all rotationally connect on two curb girders of framework 4 constitute 401.

In particular to the embodiment of the present invention, the brake hanging seat 403 can be welded on the side of the middle portion of the beam assembly 402, which is back to back. 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 can be 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.

Because locking mechanical system's friction ring is fixed the setting relative axletree, consequently, the utility model provides a arresting gear is the fixed braking mode of relative axletree, and then can avoid the inboard apart from the influence of changing to the braking of wheel, and easily arrange on the bogie of welding framework type.

In summary, according to the track-distance-variable bogie disclosed by the embodiment of the invention, when the track is changed, the friction between the wheel 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 and repairing 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 embodiment is the preferred embodiment of the present invention, which is only used to facilitate the explanation of the present invention, it is not right to the present invention, which makes the limitation of any form, any of the commonly known people in the technical field, if the present invention does not depart from the technical features of the present invention, the present invention utilizes the present invention to make the equivalent embodiment of local change or modification, and does not depart from the technical features of the present invention, which all still belongs to the technical features of the present invention.

Claims (10)

1. A track-variable bogie is characterized by comprising wheel set assemblies (1), a framework (4) and a braking device (5), wherein the two wheel set assemblies (1) are oppositely arranged on the framework (4), and the track-variable bogie is characterized in that:

the frame (4) comprises two side beam assemblies (401) and two cross beam assemblies (402), the two side beam assemblies (401) are arranged oppositely, the middle parts of the two side beam assemblies (401) are connected through the cross beam assemblies (402), two opposite sides of each cross beam assembly (402) are respectively provided with a brake device (5), and the brake devices (5) can control the wheel pair assemblies (1) to rotate;

the wheel set 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 oppositely arranged at two axial ends of the axle (102) through the corresponding locking mechanisms respectively, two ends of the axle (102) of each wheel set assembly (1) are rotatably connected to a framework (4), the distance between the two wheels (101) and the axle (102) can be changed by operating the locking mechanisms, the locking mechanisms comprise friction rings (108), and the friction rings (108) are fixedly arranged relative to the axle (102);

the brake device (5) comprises a unit brake (501) and a brake shoe (502), the unit brake (501) is fixedly arranged on the side face of the beam assembly (402), the brake shoe (502) is arranged on a push rod seat of the unit brake (501), and the brake shoe (502) can operatively act on a friction ring (108) of the locking mechanism to control the rotation of the wheel pair assembly (1).

2. A variable-track-pitch bogie as claimed in claim 1, wherein each locking mechanism comprises:

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).

3. The track-changing bogie according to claim 2, wherein a plurality of pin holes (105-1) are formed in the circumferential surface of the retainer sleeve (105), a plurality of the pin holes (105-1) form a positioning ring, the positioning ring and the axle (102) are concentric, and the plurality of the pin holes (105-1) are selectively moved 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 (104-1) located on the radial inner side of the positioning ring.

4. The track-changing bogie according to claim 3, wherein the positioning pin (106) comprises a cylindrical body movably passing through the pin hole (105-1) corresponding to the positioning pin (106), and a tapered body fixedly arranged at an end of the cylindrical body, the tapered body extending into the positioning groove (104-1) radially inward of the positioning ring with a clearance fit.

5. Pitch truck according to claim 3, characterized in that the dowel pin (106) is provided with a through-going venting hole in its axial direction.

6. Pitch truck according to claim 3, characterized in that the 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 track-variable bogie according to claim 6, wherein the positioning bushing (103) further comprises a shoulder bushing (103-2), the shoulder bushing (103-2) is a second end of the positioning bushing (103), the shoulder bushing (103-2) is fixedly arranged at an axial end of the axle (102), the shoulder bushing (103-2) is coaxially arranged at one end of the sliding bushing (103-1), the radius of the shoulder bushing (103-2) is larger than that of the sliding bushing (103-1), and a first end of the position-limiting bushing (105) is fixedly arranged on the shoulder bushing (103-2).

8. The track-changing bogie according to claim 7, wherein said locating bush (103) further comprises a mounting disc (103-3), said mounting disc (103-3) being fixedly arranged at an axial end of said axle (102), said shoulder bush (103-2) being coaxially arranged between said sliding bush (103-1) and said mounting disc (103-3), said mounting disc (103-3) having a radius larger than a radius of said shoulder bush (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. Pitch truck according to claim 8, characterized in that the friction ring (108) is fixedly arranged on a mounting disc (103-3) of the locating bush (103).

10. A bogie according to claim 8 characterised in that the second end of the stop collar (105) is provided with a stop 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.

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