Variable-gauge bogie wheel set

Abstract

A variable-gauge bogie wheel set, comprising an axle (100), wheel assemblies, support assemblies, wheel disc assemblies, positioning apparatuses (900), and locking mechanisms (1000). Each wheel assembly and support assembly are respectively sleeved on a spline (130) and a support base (120) of the axle (100). The wheel disc assembly is movably sleeved on the periphery of a support member (510) of a support (500). A transition disc (700) of the wheel disc assembly is connected to a sliding block (600) and a guide rod (1010). A positioning apparatus (900) and a guide cylinder (1020) are connected to the support (500). The transition disc (700) moves to drive the sliding block (600) and the guide rod (1010) to move, thereby causing the positioning apparatus (900) in contact with the sliding block (600) to move. The relative positions of the guide rod (1010) and the guide cylinder (1020) sleeved outside a connecting rod change, such that the engagement position of the positioning apparatus (900) on the support (500) and a connecting plate (300) connected to a wheel (200) changes, so that the distance between two wheels (200) changes.

Description

A variable gauge bogie wheelset

[0001] This application claims priority to the Chinese patent application filed with the Patent Office of China on January 12, 2024, with application number 202410050257.1 and invention name “A variable gauge bogie wheelset”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of railway locomotive vehicle bogies, and in particular to a variable gauge bogie wheelset. Background Art

[0003] Currently, railway gauges vary between countries and regions around the world, and even within some countries and regions, multiple gauges coexist. When a train needs to operate across different gauges, there are three options: transshipment, transferring cargo / passengers from a train with one gauge to another; bogie replacement, replacing a bogie with one gauge for another; and variable-gauge bogies, which can actively or passively adjust to accommodate the different gauges when crossing lines. The first two options are inefficient, require long operation cycles, and are costly, while the third approach is the opposite.

[0004] The change in track gauge is reflected in the wheelset, which means that the axial position of the wheel on the axle must change. The core requirement of the variable-gauge bogie is that the wheels can be unlocked and locked. After unlocking, the wheels can be accurately moved axially to the predetermined position on the axle and reliably locked after the movement is completed. Currently, there are many track-changing technologies, but some of them have unreasonable structural designs. For example, Poland has developed the SUW2000 variable-gauge wheelset, which adopts an integral wheelset structure and axle-disc brakes. It can achieve track change without unloading, but it cannot carry power. Japan has developed the A-type variable-gauge bogie, which uses hub motors and an independently rotating wheel structure, and is not suitable for high speeds.

[0005] Therefore, how to avoid the problem of unreasonable wheel set system structure design is a technical problem that those skilled in the art currently need to solve.

[0006] Summary of the Invention

[0007] The purpose of this application is to provide a variable gauge bogie wheelset that can avoid the problem of unreasonable wheelset system structural design.

[0008] To achieve the above object, the present invention provides a variable gauge bogie wheelset, comprising:

[0009] The axle is a rod-shaped structure, and the drive device seat, bracket seat and spline are sequentially provided in the direction extending from the middle of the axle to the end;

[0010] The wheel assembly includes a wheel, a connecting plate, and an axle box. The wheel is provided with a mounting groove and a mounting hole for mounting the connecting plate. The connecting plate is provided with a mounting seat connected to the wheel. The mounting seat is provided with a first positioning groove and a second positioning groove. The wheel is movably connected to the spline of the axle. The axle boxes are respectively connected to the ends of the axle.

[0011] The bracket assembly includes a bracket and a sliding block. The bracket is provided with a bracket member, a bracket hole, a positioning device groove, and a guide cylinder seat. The cross section of the bracket member along the extension direction of the axle is annular. The bracket hole is a through hole that penetrates the bracket member along the extension direction of the axle. The bracket is sleeved on the axle through the bracket member. The positioning device groove and the guide cylinder seat are alternately located on the outer peripheral surface of the bracket member. The sliding block is movably penetrated through the matching hole on the positioning device groove.

[0012] The wheel disc assembly is connected to the outer periphery of the bracket member and includes a transition disc and a friction disc. The transition disc is pancake-shaped and is provided with a sliding block mounting hole, a guide rod mounting hole, a friction disc mounting hole, and a first mounting hole in sequence from the inside to the outside along the diameter direction of the circular surface. The friction disc is provided with a mounting through hole, and the friction disc is connected to the friction disc mounting hole through the mounting through hole.

[0013] The positioning device includes a positioning pin, a positioning spring, and a positioning slider. The positioning device is installed in the positioning device slot. The positioning pin is connected to the positioning slider. The positioning slider contacts the sliding block. The sliding block can push the positioning pin to engage with the first positioning slot or the second positioning slot.

[0014] The locking mechanism includes a guide rod, a guide cylinder and a spring, wherein the guide rod is connected to the transition plate, the guide cylinder is connected to the guide cylinder seat, and the guide rod can slide in the guide cylinder;

[0015] Preferably, the wheel also includes: a slideway, a spline path, and a second mounting hole, and the sliding block can move along the slideway; the spline path is located at the connection between the wheel and the axle, and the spline path is used to cooperate with the spline; the second mounting hole is evenly distributed along the circumference of the wheel; the mounting groove passes through the wheel along the extension direction of the axle, and is used to be clamped with the mounting seat of the connecting plate; the mounting hole is used to fix the connecting plate.

[0016] Preferably, the variable gauge bogie wheelset also includes a first sealing device and a second sealing device, the two ends of the first sealing device are respectively connected to the first mounting hole and the second mounting hole, and the two ends of the second sealing device are respectively connected to the second mounting hole and the axle box, and the first sealing device and the second sealing device are used to prevent impurities and foreign matter from entering the positioning device and the locking mechanism during operation.

[0017] Preferably, the positioning pin is provided with a positioning boss, which can be engaged with the first positioning groove or the second positioning groove, and the positioning slider is provided with a wedge-shaped sliding surface, which fits with the sliding block.

[0018] Preferably, the sliding block includes:

[0019] A cylindrical boss is provided with a boss hole inside, and the cylindrical boss is mounted on the sliding block mounting hole through the boss hole;

[0020] A sliding member is connected to the cylindrical boss, and an end of the sliding member facing away from the cylindrical boss is provided with an inclined sliding surface, and the inclined sliding surface is in contact with the wedge-shaped sliding surface to push the positioning slider and the positioning pin;

[0021] The sliding surface is in contact with the slideway and can move relative to the slideway.

[0022] Preferably, a guide hole is provided on the guide cylinder seat, and the guide hole is a through hole extending along the extension direction of the axle.

[0023] Preferably, the guide rod includes a guide boss, a guide rod outer wall, a first limiting surface, a second limiting surface and a guide mounting hole, the guide rod is fixed to the guide rod mounting hole through the guide mounting hole, and the guide boss is movably connected to the guide hole.

[0024] Preferably, the guide cylinder includes a guide cylinder mounting surface, a third limiting surface and a fourth limiting surface, and the guide cylinder mounting surface is mounted on the guide cylinder seat.

[0025] Preferably, there are 6 sets of sliding blocks, positioning devices and locking mechanisms.

[0026] Preferably, the positioning pin and the positioning slide block are connected by bolts.

[0027] Compared with the above background technology, the variable gauge bogie wheelset provided in the present application includes an axle, a wheel assembly, a bracket assembly, a wheel disc assembly, a positioning device and a locking mechanism. The axle is a rod-shaped structure, and the middle part of the axle is provided with a drive device seat, a bracket seat and a spline in sequence in the direction extending from the end portion of the axle; the wheel assembly includes a wheel, a connecting plate and an axle box, and the wheel is provided with a mounting groove and a mounting hole for the connecting plate to be installed, the connecting plate is provided with a mounting seat connected to the wheel, the mounting seat is provided with a first positioning groove and a second positioning groove, the wheel is movably connected to the spline of the axle, and the axle box is respectively connected to the end of the axle; the bracket assembly includes a bracket and a sliding block. The bracket is provided with a bracket part, a bracket hole, a positioning device groove and a guide cylinder seat, the bracket is sleeved on the axle through the bracket part, the positioning device groove and the guide cylinder seat are alternately located on the outer circumference of the bracket part, and the sliding block is movably passed through the matching hole on the positioning device groove; the wheel disc assembly includes a transition plate and a friction plate, the transition plate is sequentially arranged with a sliding block mounting hole, a guide rod mounting hole, a friction plate mounting hole and a first mounting hole along the diameter direction of the circular surface from the inside to the outside, and the friction plate is connected to the friction plate mounting hole through the mounting through hole; the positioning device includes a positioning pin, a positioning spring and a positioning slider, and the positioning device The wheel assembly and the bracket assembly are respectively sleeved on the spline and the bracket seat of the axle, and the wheel assembly is movably sleeved on the outer periphery of the bracket member of the bracket, and the sliding block and the guide rod are connected to the transition plate of the wheel assembly, and the positioning device and the guide cylinder are connected on the bracket, wherein the movement of the transition plate will drive the sliding block and the guide rod to move, thereby causing the positioning device in contact with the sliding block to move, and the relative position of the guide rod and the guide cylinder sleeved on the outside of the connecting rod will change, so that the clamping position of the positioning device on the bracket and the connecting plate connected to the wheel will change, thereby changing the distance between the two wheels, so that the distance between the wheels is consistent with the corresponding track, thereby achieving stable operation of the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0029] FIG1 is a schematic structural diagram of a variable gauge bogie wheelset provided in an embodiment of the present invention;

[0030] FIG2 is a schematic structural diagram of an axle provided in an embodiment of the present invention;

[0031] FIG3 is a schematic structural diagram of a wheel provided in an embodiment of the present invention;

[0032] FIG4 is a structural schematic diagram of a wheel provided by an embodiment of the present invention from another perspective;

[0033] FIG5 is a schematic structural diagram of a connecting plate provided in an embodiment of the present invention;

[0034] FIG6 is a schematic structural diagram of a bracket provided in an embodiment of the present invention;

[0035] FIG7 is a cross-sectional view of the structure of a bracket provided in an embodiment of the present invention;

[0036] FIG8 is a schematic structural diagram of a sliding block provided in an embodiment of the present invention;

[0037] FIG9 is a schematic structural diagram of a sliding block from another perspective according to an embodiment of the present invention;

[0038] FIG10 is a schematic structural diagram of a transition plate provided in an embodiment of the present invention;

[0039] FIG11 is a cross-sectional view of the structure of a transition plate provided in an embodiment of the present invention;

[0040] FIG12 is a schematic structural diagram of a friction disk provided in an embodiment of the present invention;

[0041] FIG13 is a cross-sectional view of the structure of a friction disc provided by an embodiment of the present invention;

[0042] FIG14 is a front view of the structure of a positioning device provided in an embodiment of the present invention;

[0043] FIG15 is a top view of the structure of a positioning device provided in an embodiment of the present invention;

[0044] FIG16 is a cross-sectional view of the structure of a positioning device provided in an embodiment of the present invention;

[0045] FIG17 is a cross-sectional view of the structure of the locking mechanism provided in an embodiment of the present invention;

[0046] FIG18 is a cross-sectional view of the structure of a guide rod provided in an embodiment of the present invention;

[0047] FIG19 is a structural cross-sectional view of a guide rod provided by an embodiment of the present invention from another perspective;

[0048] FIG20 is a cross-sectional view of the structure of a guide sleeve provided in an embodiment of the present invention;

[0049] FIG21 is a structural cross-sectional view of a guide tube from another perspective according to an embodiment of the present invention;

[0050] FIG22 is a schematic structural diagram of a variable-gauge bogie wheelset in a narrow-gauge state provided by an embodiment of the present invention;

[0051] in:

[0052] 100- axle, 110- drive unit seat, 120- bracket seat, 130- spline;

[0053] 200-wheel, 210-mounting slot, 220-mounting hole, 230-slideway, 240-spline path, 250-second mounting hole;

[0054] 300-connecting plate, 310-mounting seat, 320-first positioning groove, 330-second positioning groove;

[0055] 400-axle box;

[0056] 500-bracket, 510-bracket member, 520-bracket hole, 530-positioning device slot, 540-guide cylinder seat, 541-guide hole, 550-matching hole;

[0057] 600-sliding block, 610-cylindrical boss, 620-boss hole, 630-sliding member, 640-inclined sliding surface, 650-sliding surface;

[0058] 700-transition plate, 710-sliding block mounting hole, 720-guide rod mounting hole, 730-friction plate mounting hole, 740-first mounting hole;

[0059] 800-friction disc, 810-mounting through hole;

[0060] 900- positioning device, 910- positioning pin, 911- positioning boss, 920- positioning spring, 930- positioning slider, 931- wedge-shaped sliding surface;

[0061] 1000 - locking mechanism, 1010 - guide rod, 1011 - guide boss, 1012 - outer wall of guide rod, 1013 - first limiting surface, 1014 - second limiting surface, 1015 - guide mounting hole, 1020 - guide cylinder, 1021 - guide cylinder mounting surface, 1022 - third limiting surface, 1023 - fourth limiting surface, 1030 - spring;

[0062] 1100-first sealing device;

[0063] 1200-Second sealing device. DETAILED DESCRIPTION

[0064] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0065] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left" and "right" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the positions or elements referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limitations of the present invention.

[0066] The purpose of this application is to provide a variable gauge bogie wheelset that can avoid the problem of unreasonable wheelset system structural design.

[0067] To achieve the above objectives, the present invention provides the following technical solutions:

[0068] Referring to Figures 1 to 22, this embodiment provides a variable gauge bogie wheelset, including:

[0069] The axle 100 is a rod-shaped structure. A driving device seat 110, a bracket seat 120 and a spline 130 are sequentially provided in a direction extending from the middle of the axle 100 to the end.

[0070] It should be noted that the drive device seat 110 is located in the center of the axle 100, and a bracket seat 120 and a spline 130 are respectively arranged between the drive device seat 110 and the end of the axle 100, that is, the number of the bracket seat 120 and the spline 130 are both two.

[0071] The wheel assembly includes a wheel 200, a connecting plate 300 and an axle box 400. The wheel 200 is provided with a mounting groove 210 and a mounting hole 220 for installing the connecting plate 300. The connecting plate 300 is provided with a mounting seat 310 connected to the wheel 200. The mounting seat 310 is provided with a first positioning groove 320 and a second positioning groove 330. The wheel 200 is movably connected to the spline 130 of the axle 100, and the axle box 400 is respectively connected to the end portions of the axle 100.

[0072] It is understandable that after the mounting seat 310 of the connecting plate 300 passes through the mounting groove 210, the mounting hole 220 and the mounting seat 310 are fixed by bolts, so that the connecting plate 300 is fixed on the wheel 200, and the positions of the wheel 200 and the connecting plate 300 are relatively fixed.

[0073] It should be noted that there are two wheels 200, and the two wheels 200 are movably connected to the splines 130 located on both sides of the drive device seat 110. Each wheel 200 corresponds to three mounting grooves 210 and three connecting plates 300. The mounting grooves 210 are evenly distributed along the circumference of the wheel 200. The number of mounting holes 220 can be adjusted according to actual needs. In this embodiment, there are six mounting holes 220 corresponding to the outer side of each mounting groove 210.

[0074] The bracket assembly includes a bracket 500 and a sliding block 600. The bracket 500 is provided with a bracket member 510, a bracket hole 520, a positioning device groove 530 and a guide cylinder seat 540. The cross-section of the bracket member 510 along the extension direction of the axle 100 is circular. The bracket hole 520 is a through hole that penetrates the bracket member 510 along the extension direction of the axle 100. The bracket 500 is sleeved on the axle 100 through the bracket member 510. The positioning device groove 530 and the guide cylinder seat 540 are alternately located on the outer peripheral surface of the bracket member 510. The sliding block 600 is movably penetrated through the matching hole 550 on the positioning device groove 530.

[0075] It can be understood that the bracket 500 is installed on the axle 100 through an interference fit with the bracket 500 mounting seat 310 on the axle 100 through the bracket hole 520, the number of positioning device grooves 530 and the number of guide cylinder seats 540 on the bracket 500 are the same, and the positioning device grooves 530 are provided with matching holes 550 for connecting the sliding block 600. In this embodiment, the number of matching holes 550 is the same as that of the positioning device grooves 530. In addition, the number and shape of the matching holes 550 can also be adjusted according to actual needs.

[0076] The wheel assembly is connected to the outer periphery of the bracket member 510, and includes a transition plate 700 and a friction plate 800. The transition plate 700 is in the shape of a pancake. The transition plate 700 is provided with a sliding block mounting hole 710, a guide rod mounting hole 720, a friction plate mounting hole 730 and a first mounting hole 740 in sequence from the inside to the outside along the diameter direction of the circular surface. The friction plate 800 is provided with a mounting through hole 810, and the friction plate 800 is connected to the friction plate mounting hole 730 through the mounting through hole 810.

[0077] It should be noted that a mounting through hole 810 is provided on the friction disc 800 , and the friction disc 800 is mounted on the transition disc 700 by bolt connection.

[0078] The positioning device 900 includes a positioning pin 910, a positioning spring 920 and a positioning slider 930. The positioning device 900 is installed in the positioning device groove 530. The positioning pin 910 and the positioning slider 930 are connected. The positioning slider 930 is in contact with the sliding block 600. The sliding block 600 can push the positioning pin 910 to engage with the first positioning groove 320 or the second positioning groove 330.

[0079] It should be noted that the locating pin 910 is connected to the locating slider 930, so that the locating spring 920 is in a compressed state. When the locating pin 910 is engaged with the first locating groove 320, the wheel 200 is in a narrow track state. When the locating pin 910 is engaged with the second locating groove 330, the wheel 200 is in a wide track state. When the wheel 200 needs to switch between the narrow track state and the wide track state, the sliding block 600 is disengaged from the locating slider 930, so that the locating pin 910 is first disengaged from the engaged first locating groove 320 or the second locating groove 330, and then re-engaged with the second locating groove 330 or the first locating groove 320. In addition, the number of connecting plates 300 connected to each wheel 200 is consistent with the number of mounting grooves 210.

[0080] The locking mechanism 1000 includes a guide rod 1010 , a guide cylinder 1020 and a spring 1030 . The guide rod 1010 is connected to the transition plate 700 , and the guide cylinder 1020 is connected to the guide cylinder seat 540 . The guide rod 1010 can slide in the guide cylinder 1020 .

[0081] It can be understood that the guide rod 1010 is fixedly connected to the transition plate 700, and the guide cylinder 1020 is fixedly connected to the guide cylinder seat 540. When the guide rod 1010 slides in the guide cylinder 1020, the distance between the transition plate 700 and the guide cylinder seat 540 along the axial direction of the axle 100 changes relatively, that is, the distance between the transition plate 700 and the bracket 500 along the axial direction of the axle 100 changes relatively. The friction plate 800 is fixedly connected to the transition plate 700. It can be seen that the distance between the transition plate 700 and the bracket 500 can be changed by applying an external force to the friction plate 800. In addition, in the present invention, the locking mechanism 1000 is located between the wheel 200 and the friction plate 800, that is, the locking mechanism 1000 is located between the two wheels 200.

[0082] Specifically, the wheel 200 and the bracket assembly are respectively mounted on the spline 130 and the bracket seat 120 of the axle 100, and the wheel disc assembly is movably mounted on the outer periphery of the bracket member 510 of the bracket 500. The transition plate 700 of the wheel disc assembly is connected to the sliding block 600 and the guide rod 1010, and the bracket 500 is connected to the positioning device 900 and the guide cylinder 1020. The movement of the transition plate 700 will drive the sliding block 600 and the guide rod 1010 to move, thereby causing the positioning device 900 in contact with the sliding block 600 to move, and the relative position of the guide rod 1010 and the guide cylinder 1020 mounted on the outside of the connecting rod changes, so that the clamping position of the positioning device 900 on the bracket 500 and the connecting plate 300 connected to the wheel 200 changes, thereby changing the distance between the two wheels 200, so that the distance between the wheels 200 is consistent with the corresponding track, thereby achieving stable operation of the entire vehicle.

[0083] Preferably, the wheel 200 also includes: a slide 230, a spline path 240, and a second mounting hole 250, and the sliding block 600 can move along the slide 230; the spline path 240 is located at the connection between the wheel 200 and the axle 100, and the spline path 240 is used to cooperate with the spline 130; the second mounting hole 250 is evenly distributed along the circumference of the wheel 200; the mounting groove 210 passes through the wheel 200 along the extension direction of the axle 100, and is used to engage with the mounting seat 310 of the connecting plate 300; the mounting hole 220 is used to fix the connecting plate 300.

[0084] It can be understood that the spline 240 on the wheel 200 cooperates with the spline 130 on the axle 100, so that the wheel 200 can move along the spline 130 of the axle 100, and a slide 230 for the sliding block 600 is provided on the wheel 200. In the present invention, each wheel 200 is provided with three slides 230.

[0085] Preferably, the variable gauge bogie wheelset also includes a first sealing device 1100 and a second sealing device 1200, wherein the two ends of the first sealing device 1100 are respectively connected to the first mounting hole 740 and the second mounting hole 250, and the two ends of the second sealing device 1200 are respectively connected to the second mounting hole 250 and the axle box 400. The first sealing device 1100 and the second sealing device 1200 are used to prevent impurities and foreign matter from entering the positioning device 900 and the locking mechanism 1000 during operation.

[0086] A first sealing device 1100 and a second sealing device 1200 are respectively provided on the inner and outer sides of the wheel 200. The first sealing device 1100 and the second sealing device 1200 are used to prevent impurities and foreign matter from entering the inter-axle spline 130 and the locking mechanism 1000 during operation. In this embodiment, there are two sets of the first sealing device 1100 and the second sealing device 1200. The material and shape of the sealing device can be adjusted according to actual needs and are not specifically limited here.

[0087] It should be noted that the transition plate 700 is provided with a guide rod mounting hole 720, a friction plate mounting hole 730, a first mounting hole 740, and a sliding block mounting hole 710, and the guide rod 1010, friction plate 800, first sealing device 1100, and sliding block 600 are installed by corresponding bolt connections.

[0088] Preferably, the positioning pin 910 is provided with a positioning boss 911 , which can be engaged with the first positioning groove 320 or the second positioning groove 330 , and the positioning slider 930 is provided with a wedge-shaped sliding surface 931 , which fits with the sliding block 600 .

[0089] It should be noted that the positioning device 900 includes a positioning pin 910, a positioning spring 920 and a positioning slider 930. The positioning pin 910 and the positioning slider 930 are connected so that the positioning spring 920 is in a compressed state. A positioning boss 911 is provided on the positioning pin 910. The positioning boss 911 can limit the positioning spring 920 from disengaging from the positioning pin 910. The positioning boss 911 can be engaged with the first positioning groove 320 or the second positioning groove 330. When engaged, the positioning spring 920 in a compressed state contacts the inner wall of the positioning device groove 530 to maintain elastic force. In addition, the positioning slider 930 is provided with a wedge-shaped sliding surface 931. The sliding block 600 pushes the positioning slider 930 away from the axle 100 through the wedge-shaped sliding surface 931, so that the positioning pin 910 connected to the positioning slider 930 is engaged with the first positioning groove 320 or the second positioning groove 330 of the connecting plate 300.

[0090] Preferably, the sliding block 600 includes a cylindrical boss 610, a sliding member 630 and a sliding surface 650. A boss hole 620 is provided inside the cylindrical boss 610, and the cylindrical boss 610 is installed in the sliding block mounting hole 710 through the boss hole 620; the sliding member 630 is connected to the cylindrical boss 610, and an inclined sliding surface 640 is provided at the end of the sliding member 630 facing away from the cylindrical boss 610. The inclined sliding surface 640 is in contact with the wedge-shaped sliding surface 931 for pushing the positioning slider 930 and the positioning pin 910; the sliding surface 650 is in contact with the slide 230 and can move relative to the slide 230.

[0091] It can be understood that the cylindrical boss 610 of the sliding block 600 is fixed to the sliding block mounting hole 710 through the matching hole 550, the inclined sliding surface 640 on the sliding block 600 cooperates with the wedge-shaped sliding surface 931 on the positioning device 900, the sliding surface 650 on the sliding block 600 cooperates with the slide 230 on the wheel 200, and a boss hole 620 is provided on the cylindrical boss 610, which cooperates with the sliding block mounting hole 710 on the transition plate 700, and the sliding block 600 and the transition plate 700 are connected by bolts.

[0092] Preferably, a guide hole 541 is provided on the guide cylinder seat 540 , and the guide hole 541 is a through hole extending along the extending direction of the axle 100 .

[0093] It should be noted that the guide hole 541 is designed to allow one end of the guide rod 1010 to pass through to stabilize the locking mechanism 1000 as a whole. The guide rod 1010 can move relative to the guide hole 541 along the extension direction of the axle 100. The number of guide holes 541 is not specifically limited here, as long as it can achieve the above purpose.

[0094] Preferably, the guide rod 1010 includes a guide boss 1011, a guide rod outer wall 1012, a first limiting surface 1013, a second limiting surface 1014 and a guide mounting hole 1015. The guide rod 1010 is fixed to the guide rod mounting hole 720 through the guide mounting hole 1015, and the guide boss 1011 is movably connected to the guide hole 541.

[0095] The guide boss 1011 on the guide rod 1010 cooperates with the guide hole 541 on the bracket 500, and the guide mounting hole 1015 on the guide rod 1010 cooperates with the guide rod mounting hole 720 on the transition plate 700. The guide rod 1010 is connected to the transition plate 700 by bolts. A first limiting surface 1013 and a second limiting surface 1014 are provided on the guide rod 1010 for limiting the relative movement of the guide rod 1010 and the guide cylinder 1020.

[0096] Preferably, the guide cylinder 1020 includes a guide cylinder mounting surface 1021 , a third limiting surface 1022 and a fourth limiting surface 1023 , and the guide cylinder mounting surface 1021 is mounted on the guide cylinder seat 540 .

[0097] The guide cylinder mounting surface 1021 on the guide cylinder 1020 cooperates with the guide cylinder seat 540 on the bracket 500, and the guide cylinder 1020 is connected to the bracket 500 via bolts. The guide cylinder 1020 is provided with a third limiting surface 1022 and a fourth limiting surface 1023. The third limiting surface 1022 and the fourth limiting surface 1023 are used to limit the relative displacement of the guide cylinder 1020 and the guide rod 1010. It can be seen that the third limiting surface 1022 and the fourth limiting surface 1023 can limit the relative displacement of the bracket 500 and the transition plate 700.

[0098] Preferably, the sliding blocks 600 , the positioning devices 900 and the locking mechanisms 1000 are all 6 groups.

[0099] It should be noted that in this embodiment, the number of sliding blocks 600 and positioning devices 900 corresponds to 6 groups, the guide cylinder 1020 of the locking mechanism 1000 and the positioning device 900 are connected to the bracket 500, and the number of locking mechanisms 1000 is consistent with the number of positioning devices 900, both of which are 6 groups.

[0100] Preferably, the positioning pin 910 and the positioning slider 930 are connected by bolts.

[0101] It should be noted that the connection between the positioning pin 910 and the positioning slider 930 can be in various forms, and in this embodiment, a bolt connection is preferred.

[0102] The present invention provides a variable gauge bogie wheelset, comprising an axle 100, a wheel assembly, a bracket assembly, a wheel disc assembly, a positioning device 900, a locking mechanism 1000, a first sealing device 1100 and a second sealing device 1200.When the bogie wheelset is in a narrow-gauge state, the inclined sliding surface 640 of the sliding block 600 pushes the positioning slider 930 away from the axle 100, so that the positioning pin 910 of the positioning device 900 is engaged with the first positioning groove 320 of the connecting plate 300. At this time, the second limiting surface 1014 of the guide rod 1010 contacts the fourth limiting surface 1023 of the guide cylinder 1020, preventing the relative displacement of the guide rod 1010 and the guide cylinder 1020. At this time, the positioning device 900 and the locking mechanism 1000 are fixed in position, so that the relative positions of the wheel assembly, the bracket assembly, and the wheel disc assembly are fixed; when the bogie wheelset is in a wide-gauge state, the inclined sliding surface 640 of the sliding block 600 pushes the positioning slider 930 away from the axle 100, so that the positioning pin 910 of the positioning device 900 is engaged with the first positioning groove 320 of the connecting plate 300. 10 is engaged with the second positioning groove 330 of the connecting plate 300. At this time, the first limiting surface 1013 of the guide rod 1010 contacts the third limiting surface 1022 of the guide cylinder 1020, preventing the relative displacement of the guide rod 1010 and the guide cylinder 1020. At this time, the positioning device 900 and the locking mechanism 1000 are fixed in position, so that the relative positions of the wheel assembly, the bracket assembly and the wheel disc assembly are fixed; taking the narrow gauge state to the wide gauge state as an example, when the bogie wheelset needs to switch from the narrow gauge state to the wide gauge state, the external force acts on the friction disc 800, driving the transition disc 700 fixedly connected to the friction disc 800 to overcome the force of the spring 1030, so that the transition disc 700 drives the sliding block 600 and the guide rod 1010 to approach the driving device seat 110. When the wheel 200 reaches the corresponding position, the external force acting on the friction disc 800 is stopped. At this time, under the action of the compressed spring 1030, the wheel assembly and the guide rod 1010 move in the direction away from the drive device seat 110, which will drive the sliding block 600 connected to the transition plate 700 to move in the same direction. When the inclined sliding surface 640 of the sliding block 600 and the wedge of the positioning slider 930 are wedge-shaped, the wheel 200 is unlocked. The shaped sliding surface 931 contacts, so that the positioning device 900 is engaged with the second positioning groove 330 of the connecting plate 300, so that the entire wheelset system is in a wide track state; in addition, the guide rod 1010 of the locking mechanism 1000 has a first limiting surface 1013 and a second limiting surface 1014, and the guide cylinder 1020 of the locking mechanism 1000 has a third limiting surface 1022 and a fourth limiting surface 1023. The first limiting surface 1013, the second limiting surface 1014, the third limiting surface 1022 and the fourth limiting surface 1023 are used to limit the relative displacement of the guide rod 1010 and the guide cylinder 1020, and the first sealing device 1100 and the second sealing device 1200 are used to prevent impurities and foreign matter from entering the positioning device 900 and the locking mechanism 1000 during operation.The variable gauge bogie wheelset configured in this way can avoid the problem of unreasonable structural design of the wheelset system.

[0103] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0104] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A gauge-changing bogie wheel set, characterized in that Comprising: Axle (100); Wheel assembly, including a wheel (200), a connecting plate (300) and a journal box (400). An installation groove (210) and an installation hole (220) for installing the connecting plate (300) are provided on the wheel (200). The connecting plate (300) is provided with a mounting seat (310) connected to the wheel (200). A positioning groove is provided on the mounting seat (310). The wheel (200) is movably connected to the spline (130) of the axle (100). The journal box (400) is respectively connected to the ends of the axle (100); Bracket assembly, including a bracket (500) and a sliding block (600). The bracket (500) is provided with a bracket member (510), a bracket hole (520), a positioning device groove (530) and a guide cylinder seat (540). The cross-section of the bracket member (510) along the extending direction of the axle (100) is circular. The bracket hole (520) is a through hole penetrating through the bracket member (510) along the extending direction of the axle (100). The bracket (500) is sleeved on the axle (100) through the bracket member (510). The positioning device groove (530) and the guide cylinder seat (540) are alternately located on the outer peripheral surface of the bracket member (510). The sliding block (600) is movably inserted into a mating hole (550) on the positioning device groove (530); Wheel disc assembly, connected to the outer peripheral part of the bracket member (510), including a transition disc (700) and a friction disc (800). The transition disc (700) is disc-shaped. Along the diameter direction of the circular surface, the transition disc (700) is sequentially provided with a sliding block mounting hole (710), a guide rod mounting hole (720), a friction disc mounting hole (730) and a first mounting hole (740) from inside to outside. The friction disc (800) is connected to the friction disc mounting hole (730); Positioning device (900), including a positioning pin (910) and a positioning slider (930). The positioning device (900) is installed in the positioning device groove (530). The positioning pin (910) and the positioning slider (930) are connected. The positioning slider (930) contacts the sliding block (600). The sliding block (600) can push the positioning pin (910) to be clamped with the positioning groove; Locking mechanism (1000), including a guide rod (1010) and a guide cylinder (1020). The guide rod (1010) is connected to the transition disc (700). The guide cylinder (1020) is connected to the guide cylinder seat (540). The guide rod (1010) can slide in the guide cylinder (1020).

2. The wheel set of the gauge - changeable bogie according to claim 1, characterized in that, The wheel (200) includes: Slideway (230), along which the sliding block (600) can move; Spline way (240), located at the connection between the wheel (200) and the axle (100), and the spline way (240) is used to cooperate with the spline (130); The second mounting holes (250) are evenly distributed along the circumference of the wheel (200); The mounting groove (210) penetrates the wheel (200) along the extension direction of the axle (100) and is used for clamping with the mounting seat (310) of the connecting plate (300); The mounting hole (220) is used to fix the connecting plate (300).

3. The wheel set of the gauge-changing bogie according to claim 2, wherein The invention also comprises a first sealing device (1100) and a second sealing device (1200), wherein two ends of the first sealing device (1100) are respectively connected to the first mounting hole (740) and the second mounting hole (250), and two ends of the second sealing device (1200) are respectively connected to the second mounting hole (250) and the axle box (400), and the first sealing device (1100) and the second sealing device (1200) are used to prevent impurities and foreign matter from entering the positioning device (900) and the locking mechanism (1000) during operation.

4. The wheel set of the gauge-changing bogie according to claim 2, characterized in that, The positioning pin (910) is provided with a positioning boss (911), and the positioning boss (911) can be engaged with the positioning groove. The positioning slide block (930) is provided with a wedge-shaped sliding surface (931), and the wedge-shaped sliding surface (931) is in contact with the sliding block (600).

5. The wheel set of the gauge - changeable bogie according to claim 4, characterized in that, The sliding block (600) comprises: A cylindrical boss (610) having a boss hole (620) therein, wherein the cylindrical boss (610) is mounted on the sliding block mounting hole (710) through the boss hole (620); A sliding member (630) is connected to the cylindrical boss (610); an end of the sliding member (630) facing away from the cylindrical boss (610) is provided with an inclined sliding surface (640); the inclined sliding surface (640) is fitted with the wedge-shaped sliding surface (931) to push the positioning slider (930) and the positioning pin (910); The sliding surface (650) is in contact with the slideway (230) and is movable relative to the slideway (230).

6. The gauge - changeable bogie wheel set according to claim 4, characterized in that, The guide cylinder seat (540) is provided with a guide hole (541), and the guide hole (541) is a through hole extending along the extension direction of the axle (100).

7. The wheel set of the gauge-changing bogie according to claim 6, characterized in that, The guide rod (1010) comprises a guide boss (1011), a guide rod outer wall (1012), a first limiting surface (1013), a second limiting surface (1014) and a guide mounting hole (1015); the guide rod (1010) is fixed to the guide rod mounting hole (720) via the guide mounting hole (1015); and the guide boss (1011) is movably connected to the guide hole (541).

8. The wheel set of the gauge - changeable bogie according to claim 6, characterized in that, The guide cylinder (1020) comprises a guide cylinder mounting surface (1021), a third limiting surface (1022) and a fourth limiting surface (1023); the guide cylinder mounting surface (1021) is mounted on the guide cylinder seat (540).

9. The wheel set of the gauge-changing bogie according to any one of claims 1-8, characterized in that The sliding block (600), the positioning device (900) and the locking mechanism (1000) are each provided in 6 sets.

10. The gauge - changeable bogie wheel set according to claim 9, characterized in that, The positioning pin (910) and the positioning slide block (930) are connected by bolts.

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