CN111216493B

CN111216493B - Horizontal wheel assembly, bogie, rail vehicle and rail transit system

Info

Publication number: CN111216493B
Application number: CN201811408611.4A
Authority: CN
Inventors: 郭勇; 张鑫; 孟祥玉
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2018-11-23
Filing date: 2018-11-23
Publication date: 2022-11-11
Anticipated expiration: 2038-11-23
Also published as: CN111216493A

Abstract

The invention provides a horizontal wheel assembly, a bogie, a rail vehicle and a rail transit system, wherein the horizontal wheel assembly comprises a mounting seat, and the mounting seat is provided with a first positioning hole; the wheel shaft is fixedly connected with the mounting seat and provided with a second positioning hole; a hub pivotably connected with the axle; and the positioning pin penetrates through the first positioning hole and the second positioning hole. The horizontal wheel assembly provided by the invention is convenient for mounting and positioning the wheel shaft, has lower cost, lower processing difficulty and higher production efficiency.

Description

Horizontal wheel assembly, bogie, rail vehicle and rail transit system

Technical Field

The invention belongs to the field of rail transit, and particularly relates to a horizontal wheel assembly, a bogie, a rail vehicle and a rail transit system.

Background

The existing horizontal wheel guide wheel shaft is generally positioned by adopting a boss, and the boss positioning refers to that a wheel shaft is provided with a protruding shoulder for fixing and positioning the wheel shaft. The wheel shaft is positioned by adopting the lug boss, so that the processing difficulty of the wheel shaft is increased, and the production efficiency of the wheel shaft is reduced.

Disclosure of Invention

Aiming at the technical problems, the invention provides the horizontal wheel assembly which is convenient for mounting and positioning the wheel shaft, has lower cost, lower processing difficulty and higher production efficiency.

The specific technical scheme of the invention is as follows:

according to a first aspect of the present invention, there is provided a horizontal wheel assembly, comprising:

the mounting seat is provided with a first positioning hole;

the wheel shaft is fixedly connected with the mounting seat and provided with a second positioning hole;

a hub pivotably connected with the axle;

and the positioning pin penetrates through the first positioning hole and the second positioning hole.

The wheel shaft and the mounting seat are positioned through the positioning pin and the positioning plate, so that the wheel shaft and the mounting seat are convenient to mount and dismount, the machining difficulty of the wheel shaft is reduced, the production efficiency of the wheel shaft is improved, materials are saved, and the cost is reduced. The axle is fixed in position through the positioning pin and the positioning plate, so that the axle is prevented from deviating in the running process of the train, and the stability and the running safety of the train are prevented from being influenced.

In addition, the horizontal wheel assembly according to the present invention may have the following additional technical features.

In some embodiments of the invention, the locating pin is a cylindrical pin or a conical pin or a square pin.

In some embodiments of the invention, the locating pin is in interference fit with the first locating hole, or the locating pin is in interference fit with the second locating hole.

In some embodiments of the invention, the horizontal wheel assembly further comprises: the positioning plate is fixedly connected with the mounting seat and is positioned on one side of the mounting seat; the positioning plate is matched with the wheel shaft.

In some embodiments of the invention, the positioning plate is a flat plate or a curved plate.

In some embodiments of the present invention, there are two positioning plates respectively located at two sides of the mounting seat. The two positioning plates more effectively fix the position of the axle.

In some embodiments of the invention, the horizontal wheel assembly further comprises: an adjustment shim located between the axle and the mount. The pre-tightening force between the horizontal wheel assembly and the track beam can be adjusted by increasing or decreasing the number of the adjusting gaskets.

In some embodiments of the invention, the mount has a first plurality of mounting holes and the axle has a second plurality of mounting holes; the first mounting holes correspond to the second mounting holes one to one and are connected through bolts. The connection mode ensures that the wheel axle and the mounting seat are stably fixed, and the stability of train operation is improved.

In some embodiments of the invention, the horizontal wheel assembly further comprises: the dynamic balance weight-removing hole is formed in the hub. The dynamic balance weight-removing hole is used for maintaining the dynamic balance of the hub, and the influence on train operation caused by vibration caused by dynamic balance unbalance is prevented.

In some embodiments of the invention, the hub has weight-reducing slots. The weight reduction grooves can effectively reduce the weight of the hub, are beneficial to the light weight of the hub, can save materials and reduce the manufacturing cost of the hub.

In some embodiments of the present invention, the weight-reducing groove is provided in plurality, and the plurality of weight-reducing grooves are circumferentially provided in the outer circumferential wall of the hub.

In some embodiments of the invention, the hub is provided with an upper chamber and a lower chamber; an upper bearing is arranged in the upper chamber, and a lower bearing is arranged in the lower chamber; the upper bearing and the lower bearing are respectively sleeved on the wheel shaft.

In some embodiments of the present invention, the hub has a first oil passage connected with the lower chamber of the hub; the oil filling port of the first oil duct is higher than the oil outlet of the first oil duct. The first oil passage is used for oiling the lower bearing and maintaining the lubrication of the lower bearing.

In some embodiments of the present invention, the first oil passage extends in a direction that does not intersect the axis of the hub. The extending direction of the first oil duct does not intersect with the axis of the hub, the distance between the first oil duct and the upper cavity is increased, and the situation that the distance between the first oil duct and the upper cavity is too small to break down is avoided.

In some embodiments of the present invention, the hub has a second oil passage connected with the upper chamber of the hub. The second oil passage is used for oiling the upper bearing and maintaining the lubrication of the upper bearing.

In some embodiments of the invention, the horizontal wheel assembly further comprises: the wheel rim is fixedly connected with the wheel hub.

In some embodiments of the invention, the hub is provided with a raised formation and the rim is provided with a recess, the raised formation cooperating with the recess. The protruding structures and the grooves can prevent the wheel rim from sliding relative to the wheel hub, so that stability is higher in the running process of a train.

In some embodiments of the invention, the rim is provided with a drain hole. Liquid such as rainwater on the rim can be discharged through the drainage holes, and the influence of the liquid such as the rainwater on the rim is reduced.

In some embodiments of the invention, the axle is sleeved with an annular waterproof cover, and the waterproof cover is positioned above the hub. The water shield blocks the water droplet of landing, follows the outer end of water shield flows down, and can not fall into inside the wheel hub the upper bearing with in the lower bearing, it is right the upper bearing with the lower bearing has better protective effect.

In some embodiments of the invention, the horizontal wheel assembly further comprises a temperature monitoring device for monitoring the temperature of the axle or hub. The temperature monitoring device is used for monitoring the temperature of the wheel axle or the wheel hub and preventing the temperature of the wheel axle or the wheel hub from being overhigh.

In some embodiments of the invention, an end cap is provided below the hub; the temperature monitoring device is arranged on the end cover.

A bogie according to an embodiment of the second aspect of the invention, adapted to travel on a track beam, comprises a horizontal wheel assembly according to an embodiment of the first aspect of the invention; the horizontal wheel assembly is suitable for being matched with the side face of the track beam and guiding the running of the track vehicle.

According to a third aspect of the invention, a railway vehicle is provided, comprising a bogie according to the second aspect of the invention.

A rail transit system proposed according to an embodiment of a fourth aspect of the invention comprises a rail beam and a rail vehicle proposed according to an embodiment of a third aspect of the invention; the rail vehicle runs on the rail beam.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a perspective view of a horizontal wheel assembly provided by an embodiment of the present invention.

Fig. 2 is a front view of a horizontal wheel assembly provided by an embodiment of the present invention.

Fig. 3 is a left side view of a horizontal wheel assembly provided by an embodiment of the present invention.

Fig. 4 is an exploded view of a horizontal wheel assembly provided by an embodiment of the present invention.

Fig. 5 is a front view of a mount provided by an embodiment of the invention.

Fig. 6 is a cross-sectional view of a horizontal wheel assembly provided by an embodiment of the present invention.

Fig. 7 is a perspective view of a hub provided by an embodiment of the present invention.

FIG. 8 is a right side view of a hub provided by an embodiment of the present invention.

Fig. 9 is a cross-sectional view taken along the line B-B in fig. 8.

FIG. 10 is a top view of a hub provided by an embodiment of the present invention.

Fig. 11 is a cross-sectional view taken along the line C-C in fig. 10.

FIG. 12 is a top view of a rim provided by an embodiment of the present invention.

Fig. 13 is a front view of a bogie and a track beam provided by an embodiment of the present invention.

Fig. 14 is a front view of a bogie and a track beam provided in accordance with another embodiment of the present invention.

Reference numerals:

a horizontal wheel assembly 100;

a wheel axle 1;

a second positioning hole 11, a second mounting hole 12, a waterproof cover 13 and a temperature monitoring device 14;

a hub 2;

the bearing comprises an upper bearing 21, a lower bearing 22, a weight reduction groove 23, a dynamic balance weight reduction hole 24, a first oil passage 25, a second oil passage 26, a protruding structure 27, an upper cavity 28 and a lower cavity 29;

a positioning pin 3;

a spacer 4 is adjusted;

a mounting base 5;

a positioning plate 51, a first positioning hole 52, a first mounting hole 53;

a rim 6;

a groove 61, a drain hole 62;

a bogie 200;

a frame 201; running wheels 202;

a guide wheel assembly 101; a stabilizing wheel assembly 102; a horizontal safety wheel 103;

a track beam 7, an outer side 7a, an inner side 7b;

a horizontal wheel 8.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "transverse," "vertical," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the indicated orientations and positional relationships, based on the orientation or positional relationship illustrated in the drawings, for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention. Wherein,xthe axial direction is a transverse direction,xthe positive direction of the axis is the right direction,xthe axial negative direction is left;ythe axial direction is the longitudinal direction,ythe positive direction of the axis is the front direction,ythe negative axis direction is rear;zthe axial direction is vertical or vertical,zthe positive direction of the axis is upward,zthe axial negative direction is lower;xOythe plane is the horizontal plane, and the horizontal plane,yOzthe plane is the vertical plane in the longitudinal direction,xOzi.e. the transverse vertical plane. In addition, the features defined as "first" and "second" may be explicitly or implicitly usedIncluding one or more of the features. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the connection can be mechanical connection or electrical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

The horizontal wheel assembly 100, the bogie, the rail vehicle and the rail transit system according to the embodiment of the present invention will be described in detail with reference to fig. 1 to 14.

In some embodiments, as shown in fig. 1-2, horizontal wheel assembly 100 includes mount 5, axle 1, hub 2, and dowel pin 3.

In some embodiments, as shown in fig. 1-2, mount 5 is provided with a first locating hole 52. The wheel shaft 1 is fixedly connected with the mounting seat 5, and a second positioning hole 11 is formed in the wheel shaft 1. In some embodiments, the axle 1 and the mounting seat 5 are fixedly connected by bolts and nuts. The hub 2 is pivotably connected to the axle 1. The positioning pin 3 is inserted through the first positioning hole 52 and the second positioning hole 11.

From this, shaft 1 and mount pad 5 in the horizontal wheel subassembly 100 are fixed a position through locating pin 3, are convenient for install and dismantle, have reduced shaft 1's the processing degree of difficulty simultaneously and have improved shaft 1's production efficiency, save material, reduce cost. The axle 1 is fixed through the locating pin 3, prevents that in the train operation process, the axle 1 from taking place the skew, influences the stability of train and operation safety.

In some embodiments, the locating pin 3 is a cylindrical pin or a conical pin or a square pin. In some embodiments, as shown in fig. 1-2 and 4, the locating pin 3 is a cylindrical pin. In other embodiments, the locating pin 3 is a conical pin or a square pin. In other embodiments, the locating pin 3 may have other shapes.

In some embodiments, the locating pin 3 is in interference fit with the first locating hole 52, or the locating pin 3 is in interference fit with the second locating hole 11. In some embodiments, as shown in fig. 1-2, the positioning pin 3 is in interference fit with the first positioning hole 52, or the positioning pin 3 is in interference fit with the second positioning hole 11, so that the fixation between the axle 1 and the mounting seat 5 is stable. Meanwhile, compared with boss positioning in the prior art, the positioning pin 3 saves more materials and reduces the cost.

In some embodiments, horizontal wheel assembly 100 further comprises a positioning plate 51, wherein positioning plate 51 is fixedly connected to mounting base 5 and located at the side of mounting base 5; the positioning plate 51 is fitted to the wheel axle 1. In some embodiments, as shown in fig. 1-5, the positioning plate 51 is fixedly connected to the mounting base 5 by welding, and is located at a side of the mounting base 5. The positioning plate 51 is in clearance fit or contact fit with the wheel axle 1.

In some embodiments, the positioning plate 51 is a flat plate or a curved plate. The surface of the wheel shaft 1 in contact with and matched with the positioning plate 51 is a flat plate when the surface is a plane; the curved plate is formed when the contact surface of the wheel axle 1 and the positioning plate 51 is a curved surface. In some embodiments, as shown in fig. 1-5, the positioning plate 51 is a flat plate. In other embodiments, the positioning plate 51 is a curved plate.

In some embodiments, two positioning plates 51 are disposed on two sides of the mounting base 5. In other embodiments, as shown in fig. 2, there is one positioning plate 51. The two positioning plates 51 can more effectively fix the position of the wheel axle 1; the positioning plate 51 is provided with one, so that the material can be saved, and the cost can be reduced.

In some embodiments, as shown in fig. 1 and 4, the horizontal wheel assembly 100 further comprises a spacer shim 4, the spacer shim 4 being located between the axle 1 and the mount 5. A certain pretightening force is formed between the horizontal wheel assemblies 100 and the track beam 7, and the pretightening force between the horizontal wheel assemblies 100 and the track beam 7 can be adjusted by increasing or reducing the number of the adjusting gaskets 4 to obtain a proper pretightening force.

In some embodiments, as shown in fig. 1-2 and 5, the mount 5 has a plurality of first mounting holes 53 and the axle 1 has a plurality of second mounting holes 12. The first mounting holes 53 correspond to the second mounting holes 12 one by one, and are connected by bolts. In some embodiments, as shown in fig. 1-2 and 4, there are four first mounting holes 53, divided into four corners located in the mounting base 5, and four corresponding second mounting holes 12, located at four corners of the mounting plate on the axle 1. The first mounting holes 53 correspond to the second mounting holes 12 one by one, and are connected correspondingly through bolts and nuts. Therefore, the wheel shaft 1 and the mounting seat 5 are fixed stably, and the running stability of the train is improved.

In some embodiments, as shown in fig. 8-9, the horizontal wheel assembly 100 further includes a dynamic balance de-weighting aperture 24, the dynamic balance de-weighting aperture 24 being disposed on the hub 2. The dynamic balance weight-removing hole 24 is used for maintaining the dynamic balance of the hub 2 and preventing the train from being influenced by the vibration caused by the dynamic balance unbalance. The hub 2 is tested by a dynamic balance tester which reflects the overweight part and the exceeding weight of the hub 2, and the dynamic balance weight-removing hole 24 is arranged at the overweight part of the hub 2.

In some embodiments, as shown in fig. 10, the hub 2 has weight-reducing slots 23. In some embodiments, the lightening slots 23 are plural, and the plural lightening slots 23 are circumferentially provided to the outer peripheral wall of the hub. The strength margin of the outer peripheral wall of the hub 2 is large, and materials are removed from the outer peripheral wall of the hub 2 through the lightening grooves 23, so that the weight of the hub 2 can be effectively lightened, the hub 2 is lightened, the materials can be saved, and the manufacturing cost of the hub 2 is reduced.

In other embodiments, the hub 2 is provided with the dynamic balance weight-reducing holes 24 and the weight-reducing slots 23, so that the weight of the hub 2 can be effectively reduced, and the dynamic balance unbalance caused by the weight-reducing slots 23 can be eliminated.

In some embodiments, as shown in fig. 6, the hub 2 is provided with an upper chamber 28 and a lower chamber 29; an upper bearing 21 is arranged in the upper cavity 28, and a lower bearing 22 is arranged in the lower cavity 29; the upper bearing 21 and the lower bearing 22 are respectively sleeved on the wheel axle 1.

In other embodiments, the hub 2 is provided with the dynamic balance weight-removing hole 24 and the upper chamber 28 and the lower chamber 29, which can not only effectively reduce the weight of the hub 2, but also eliminate the dynamic balance unbalance caused by the arrangement of the upper chamber 28 and the lower chamber 29.

In some embodiments, as shown in fig. 10-11, the hub 2 has a first oil passage 25, the first oil passage 25 being connected with the lower chamber of the hub 2; the oil inlet of the first oil passage 25 is higher than the oil outlet of the first oil passage 25. The first oil passage 25 is provided to facilitate the oiling of the lower bearing 22 and the maintenance of the lubrication of the lower bearing 22.

In some embodiments, as shown in fig. 10-11, the first oil passage 25 extends in a direction that does not intersect the axis of the hub 2. The extending direction of the first oil passage 25 does not intersect with the axis of the hub 2, which can increase the distance between the first oil passage 25 and the upper chamber 28, and prevent the first oil passage 25 and the upper chamber 28 from being broken down due to an excessively small distance.

In some embodiments, as shown in fig. 7, the hub 2 has the second oil passage 26, and the second oil passage 26 is connected with the upper chamber of the hub 2. For oiling the upper bearing 21 and maintaining the lubrication of the upper bearing 21.

In some embodiments, the hub 2 is provided with the dynamic balance counterweight-removing hole 24 and the first oil passage 25 or the second oil passage 26, so that the lower bearing 22 or the upper bearing 21 can be lubricated, and dynamic balance imbalance caused by the first oil passage 25 or the second oil passage 26 can be eliminated.

In some embodiments, as shown in fig. 1, 3, 6, and 12, horizontal wheel assembly 100 further includes a rim 6, rim 6 being fixedly attached to hub 2. In some embodiments, the rim 6 and the hub 2 are fixedly connected by bolts and nuts. Connect stably between rim 6 and the wheel hub 2, at the train operation in-process, rim 6 can rotate under wheel hub 2's rotation drives, and the rotational stability makes the train stability of marcing higher.

In some embodiments, as shown in FIG. 7, the hub 2 is provided with a raised structure 27 and the rim 6 is provided with a groove 61, the raised structure 27 and groove 61 cooperating. In some embodiments, both sides of the groove 61 on the rim 6 are in contact fit with both sides of the raised structure 27, and the protrusions of the raised structure 27 are in contact fit or clearance fit with the depressions of the groove 61. Rim 6 is spacing with wheel hub 2 through recess 61 and convex structure 27, prevents that rim 6 from rotating relative wheel hub 2, makes the train operation in-process, and stability is higher.

In other embodiments, the hub 2 is provided with the dynamic balance weight-removing holes 24 and the protruding structures 27, so that the rim 6 can be prevented from rotating relative to the hub 2, and dynamic balance unbalance caused by the protruding structures 27 can be eliminated.

In some embodiments, as shown in fig. 12, a drain hole 62 is provided on rim 6. In some embodiments, a drainage hole 62 is disposed on the rim 6 at equal intervals, so that liquid such as rain water on the rim 6 can be drained through the drainage hole 62, and the influence of the liquid such as rain water on the rim 6 is reduced.

In some embodiments, as shown in fig. 1-4, the hub 1 is sleeved with an annular waterproof cover 13, and the waterproof cover 13 is positioned above the hub 2. In some embodiments, the waterproof cover 13 is slightly above the hub 2, covering over the hub 2. When water drops slide down along the vertical wheel shaft 1, the annular waterproof cover 13 blocks the sliding water drops, the water drops flow down from the outer end of the waterproof cover 13 and cannot fall into the upper bearing 21 and the lower bearing 22 inside the wheel hub 2, and the protection effect on the upper bearing 21 and the lower bearing 22 is good.

In some embodiments, as shown in fig. 2-4, the horizontal wheel assembly 100 further comprises a temperature monitoring device 14, the temperature monitoring device 14 being for monitoring the temperature of the axle 1 or hub 2. In some embodiments, an end cap is provided below the hub 2, and the temperature monitoring device 14 is located at the lower end cap of the axle 1. A temperature monitoring device 14 is arranged at the end cover below the hub 2 and used for monitoring the temperature of the wheel shaft 1 or the hub 2, and when the temperature of the wheel shaft 1 or the hub 2 is too high, the temperature monitoring device 14 monitors that the temperature exceeds a preset value, and then an alarm is given.

The bogie 200 according to the embodiment of the present invention, adapted to run on the track beam 7, includes the horizontal wheel assembly 100 according to the above-described embodiment. The horizontal wheel assembly 100 is adapted to cooperate with the side of the rail beam 7 to guide the travel of the rail vehicle. Bogie 200 makes the train travel more safety and stability through setting up horizontal wheel subassembly 100, and horizontal wheel subassembly 100 is convenient for install and dismantle, has reduced the processing degree of difficulty of shaft 1 simultaneously and has improved the production efficiency of shaft 1, save material, reduce cost.

As shown in fig. 13-14, a bogie 200 according to an embodiment of the present invention, adapted to run on a track beam 7, includes a frame 201 and a horizontal wheel assembly 100. In some embodiments, the bogie 200 further comprises running wheels 202 adapted to run on the top surface of the track beam 7. The frame 201 is adapted to be connected to a vehicle body. Horizontal wheel assembly 100 is mounted on frame 201 and is adapted to engage the side of track beam 7 to provide a steering and lateral stability function for truck 200.

As shown in fig. 13, in some embodiments, the horizontal wheel assembly 100 includes a guide wheel assembly 101 and a stabilizing wheel assembly 102. In the vertical direction, the height of the guide wheel assembly 101 is greater than the height of the stabilizing wheel assembly 102. The guide wheel assembly 101 and the stabilizing wheel assembly 102 are each adapted to be in contact engagement with the outer side face 7a of the track beam 7. The guide wheel assembly 101 provides a travel guide for the bogie 200. The stabilizing wheel assembly 102 provides lateral stabilization to the truck 200.

As shown in fig. 14, in some embodiments, the middle of the track beam 7 is provided with a recess, forming an inner side wall 7b. The horizontal wheel assembly 100 is adapted to engage the inner side 7b of the track beam 7 to provide a steering and lateral stability function for the bogie 200.

As shown in fig. 13, in some embodiments, the horizontal wheel assembly 100 further includes a horizontal safety wheel 103. The diameter of the horizontal safety wheel 103 is smaller than the diameter of the horizontal wheel 8. A horizontal safety wheel 103 is mounted coaxially below the horizontal wheel 8. When the horizontal wheel 8 has a tire burst or insufficient tire pressure, the horizontal safety wheel 103 can replace the horizontal wheel 8 to be in contact fit with the track beam 7, so that the running guide and transverse stability functions are provided for the railway vehicle.

The railway vehicle according to the embodiment of the present invention includes the bogie 200 according to the above-described embodiment of the present invention. Railway vehicle is through setting up above-mentioned bogie 200, and railway vehicle operation is more safe and stable, and bogie 200 adopts horizontal wheel subassembly 100, and the installation and the dismantlement of being convenient for have reduced the processing degree of difficulty of shaft 1 simultaneously and have improved the production efficiency of shaft 1, save material, reduce cost.

The rail transit system comprises the rail beam and the rail vehicle; the rail vehicle runs on the rail beam.

Other constructions and operations of horizontal wheel assemblies, bogies, rail vehicles and rail transit systems according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A horizontal wheel assembly, comprising:

the mounting seat is provided with a first positioning hole;

a hub pivotably connected with the axle;

2. The horizontal wheel assembly of claim 1, wherein the locating pin is a cylindrical pin or a conical pin or a square pin.

3. The horizontal wheel assembly of claim 1, wherein the locating pin is in an interference fit with the first locating hole or the locating pin is in an interference fit with the second locating hole.

4. The horizontal wheel assembly of claim 1, further comprising: the positioning plate is fixedly connected with the mounting seat and is positioned on one side of the mounting seat; the positioning plate is matched with the wheel shaft.

5. The horizontal wheel assembly of claim 4, wherein the retaining plate is a flat plate or a curved plate.

6. The horizontal wheel assembly of claim 4, wherein the number of the positioning plates is two, and the two positioning plates are respectively positioned at two sides of the mounting seat.

7. The horizontal wheel assembly of claim 1, further comprising: an adjustment shim located between the axle and the mount.

8. The horizontal wheel assembly of claim 1, wherein the mounting base has a first plurality of mounting holes and the axle has a second plurality of mounting holes; the first mounting holes correspond to the second mounting holes one to one and are connected through bolts.

9. The horizontal wheel assembly of claim 1, further comprising: the dynamic balance weight-removing hole is formed in the hub.

10. A horizontal wheel assembly according to claim 1 or 9, wherein the wheel hub is provided with weight-reducing slots.

11. The horizontal wheel assembly of claim 10, wherein the plurality of weight-reducing slots are circumferentially disposed in the outer peripheral wall of the hub.

12. The horizontal wheel assembly of claim 1 or 9, wherein the wheel hub is provided with an upper chamber and a lower chamber; an upper bearing is arranged in the upper chamber, and a lower bearing is arranged in the lower chamber; the upper bearing and the lower bearing are respectively sleeved on the wheel shaft.

13. The horizontal wheel assembly of claim 12, wherein the hub has a first oil passage connected with the lower chamber of the hub; the oil filling port of the first oil duct is higher than the oil outlet of the first oil duct.

14. The horizontal wheel assembly of claim 13, wherein the first oil channel extends in a direction that does not intersect the axis of the hub.

15. The horizontal wheel assembly of claim 1 or 9, wherein the hub has a second oil passage connected with the upper chamber of the hub.

16. The horizontal wheel assembly of claim 1 or 9, further comprising: the wheel rim is fixedly connected with the wheel hub.

17. The horizontal wheel assembly of claim 16, wherein the wheel hub is provided with a raised structure and the wheel rim is provided with a groove, the raised structure engaging the groove.

18. The horizontal wheel assembly of claim 16, wherein the rim has a drain hole disposed therein.

19. The horizontal wheel assembly of claim 1, wherein the axle is sleeved with an annular waterproof cover, the waterproof cover being positioned over the hub.

20. A horizontal wheel assembly according to claim 1 or 9 further comprising a temperature monitoring device for monitoring the temperature of the axle or hub.

21. The horizontal wheel assembly of claim 20, wherein an end cap is provided below the hub; the temperature monitoring device is arranged on the end cover.

22. A bogie adapted to travel on a railway beam, comprising a horizontal wheel assembly according to any one of claims 1 to 21; the horizontal wheel assembly is suitable for being matched with the side face of the track beam and guiding the running of the track vehicle.

23. A rail vehicle comprising a bogie as claimed in claim 22.

24. A rail transit system comprising a rail beam and a rail vehicle according to claim 23; the rail vehicle runs on the rail beam.