Bogie cladding device, bogie and railway vehicle

Abstract

The application discloses a bogie covering device, a bogie and a railway vehicle, and relates to the technical field of railway vehicles. The bogie covering device comprises a mounting cross beam, which is used for fixedly connecting to a frame body of the bogie; at least two mounting plates, which are fixedly arranged on the mounting cross beam, and at least one of the mounting plates is used for fixedly connecting to the frame body of the bogie; and at least one of the mounting plates is provided with a containing portion for containing an axle-mounted brake disc, and the bottom of the containing portion is protrusively arranged towards the outer surface of the mounting plate. The bogie covering device in the application can be applied to the bogie with a large-size axle-mounted brake disc; in the process of running, the airflow can be prevented from entering the bogie device through the avoiding holes to generate the aerodynamic resistance, most of the airflow can flow along the bottom surface of the bogie covering device from the outside of the bogie covering device, and compared with the airflow directly flowing through the complex components in the bogie covering device, the aerodynamic resistance can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rail vehicle technology, and more particularly, to a bogie covering device. In addition, the present application also relates to a bogie comprising the above bogie covering device and a rail vehicle comprising the above bogie. BACKGROUND

[0002] In the prior art, the bogie device of a rail vehicle is used to bear the vehicle body and realize the functions of shape change and steering. The bogie is arranged at the bottom of the vehicle body and generally comprises a frame main body and components mounted on the frame main body. Each component is exposed to the outside, and the size of the shaft-mounted brake disc is large, so it is not easy to cover the large-size shaft-mounted brake disc. In the process of running of the rail vehicle, the components exposed to the outside are greatly affected by the aerodynamic resistance, which will generate a large wind resistance.

[0003] In summary, how to reduce the aerodynamic resistance of the bogie device with a large-size shaft-mounted brake disc is a problem that needs to be solved by the technical personnel in the field at present. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a bogie covering device which can be applied to a bogie with a large-size shaft-mounted brake disc and can avoid the entry of gas into the bogie during running, so that the airflow flows along the outer surface of the covering plate, effectively reducing the aerodynamic resistance.

[0005] Another purpose of the present application is to provide a bogie comprising the above bogie covering device and a rail vehicle comprising the above bogie.

[0006] In order to achieve the above purpose, the present application provides the following technical solutions:

[0007] A bogie covering device is used to cover the bottom of a bogie, and the bogie is provided with a frame main body and a shaft-mounted brake disc. The bogie covering device comprises:

[0008] A mounting beam is used to be fixedly connected to the frame main body of the bogie;

[0009] At least two mounting plates are fixedly arranged on the mounting beam, and at least one of the mounting plates is used to be fixedly connected to the frame main body of the bogie. At least one of the mounting plates is provided with a receiving portion for accommodating the shaft-mounted brake disc, and the bottom of the receiving portion is protrudingly arranged to the outer surface of the mounting plate.

[0010] Optionally, the part of the receiving portion protruding from the outer surface of the mounting plate is spindle-shaped.

[0011] Optionally, at least one of the mounting plates is detachably mounted on the mounting beam through a mortise and tenon structure.

[0012] Optionally, the mounting beam comprises a first mounting beam and a second mounting beam arranged in parallel, and the first mounting beam and the second mounting beam are arranged perpendicularly to the running direction of the bogie; the mounting plate comprises two side plates, two end plates and an access door, the two side plates are arranged at the two ends of the first mounting beam and the second mounting beam in the length direction, the two end plates are arranged at the front end of the first mounting beam and the rear end of the second mounting beam, and the access door is arranged between the first mounting beam and the second mounting beam.

[0013] The accommodation portion is arranged on the end plate.

[0014] Optionally, one of the access door and the first mounting beam is provided with a first protrusion, and the other of the access door and the first mounting beam is provided with a first recess matched with the first protrusion, and the first protrusion is inserted into the first recess.

[0015] At least one of the access door and the second mounting beam is provided with a locking mechanism for locking or unlocking the access door.

[0016] Optionally, the locking mechanism comprises a lock tongue which is movable between a first position and a second position and is arranged to protrude from the access door; the second mounting beam is provided with a locking protrusion and an unlocking groove, when the lock tongue moves to the first position, the lock tongue cooperates with the locking protrusion to lock the access door closed, and when the lock tongue moves to the second position, the lock tongue cooperates with the unlocking groove to unlock the access door open.

[0017] Optionally, the two sides of the end plate and the two side plates form a clearance hole for the wheel to extend out, at least one of the end plate and the side plate adjacent to the end plate is provided with a fender, the fender is located outside the circumferential direction of the wheel, and the fender gradually inclines from the bottom to the direction close to the wheel.

[0018] Optionally, the mounting plate and the mounting beam are combined into a boat-shaped structure, the middle position of the boat-shaped structure along the running direction is a plane, and the two ends are inclined surfaces arranged upwardly.

[0019] A bogie comprising a frame body, a wheel mounted on the frame body, a shaft-mounted brake disc and the bogie covering device of any one of the preceding claims.

[0020] A railway vehicle comprising the bogie of the preceding claims.

[0021] In using the bogie covering device provided by this invention, the mounting beam and mounting plate must first be assembled, and the assembled bogie covering device is then installed on the bogie, or the mounting beam and mounting plate are directly installed on the bogie. Since at least one mounting plate is provided with a receiving portion for accommodating the axle-mounted brake disc, a large-sized axle-mounted brake disc can be housed within the receiving portion, avoiding the influence of the large-sized axle-mounted brake disc on the mounting height of the mounting plate. This allows the bogie covering device to be applied to bogies with large-sized axle-mounted brake discs. During travel, since the mounting beam and mounting plate are connected to the frame body, the relative movement with the wheels is reduced, which helps to reduce the gap between the wheels and the clearance holes of the covering plate. This further prevents airflow from entering the bogie device through the clearance holes and generating aerodynamic resistance. Most of the airflow flows from the outside of the bogie covering device along the bottom surface of the bogie covering device. Compared to the airflow flowing directly through the complex components inside the bogie covering device, this effectively reduces aerodynamic resistance, thereby helping to reduce energy consumption.

[0022] Furthermore, the present invention also provides a bogie including the above-mentioned bogie covering device and a rail vehicle including the bogie. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 A schematic diagram of a specific embodiment of the bogie covering device provided by the present invention;

[0025] Figure 2 for Figure 1 Explosion-proof diagram of the bogie covering device;

[0026] Figure 3 This is an installation diagram showing the end plate and inspection door installed on the first mounting beam.

[0027] Figure 4 This is a schematic diagram of the end plate being installed on the first mounting beam.

[0028] Figure 5 A schematic diagram showing the installation of the access door onto the second mounting beam;

[0029] Figure 6 for Figure 5 A magnified view of part A in the middle;

[0030] Figure 7 This is a structural diagram of the access door;

[0031] Figure 8 A schematic diagram of a specific embodiment of the bogie provided by the present invention;

[0032] Figure 9 for Figure 8 Bottom view of the bogie;

[0033] Figure 10 This is a cross-sectional schematic diagram of the rail vehicle provided by the present invention;

[0034] Figure 11 This is a schematic diagram of the bogie structure after the end plates are removed, as provided by the present invention.

[0035] Figure 12 This is a schematic diagram of the bogie structure after the maintenance door has been removed, as provided by the present invention.

[0036] Figure 13 This is a schematic diagram showing the connection between the second mounting crossbeam and the end plate in the bogie provided by the present invention.

[0037] Figure 14 This is a partial structural schematic diagram of the bogie covering device provided by the present invention;

[0038] Figure 15 for Figure 14 Cross-sectional view along the BB direction;

[0039] Figure 16 for Figure 14 A cross-sectional view along the AA direction;

[0040] Figure 17 This is a schematic diagram showing the installation position of the metal plate in the end plate.

[0041] Figures 1-17 middle:

[0042] 1 is the main frame, 11 is the axle-mounted brake disc, 2 is the bogie covering device, 21 is the first mounting crossbeam, 211 is the first recess, 212 is the second recess, 22 is the second mounting crossbeam, 221 is the locking protrusion, 222 is the unlocking groove, 23 is the end plate, 231 is the second protrusion, 232 is the end arc surface, 233 is the reinforcing rib, 2331 is the foam core material, 2332 is the carbon fiber layer, 234 is the metal mounting block, 235 is... Metal plate, 236, 24, side plate, 25, inspection door, 251, latch, 252, first protrusion, 253, rack, 254, locking rod, 26, receiving part, 27, clearance hole, 28, mudguard, 3, anti-roll torsion bar, 4, shock absorber, 5, mounting arm, 6, mounting base, 7, wheel, 8, connecting bracket, 9, vehicle body, 101, brake pad, 102, clamp, 103, countersunk bolt, 104, butterfly anti-loosening washer. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0044] The core of the present application is to provide a bogie covering device, which can be applied to a bogie with a large-size axle-mounted brake disc and can avoid the entry of gas into the bogie during travel, so that the airflow flows along the outer surface of the covering plate, effectively reducing the aerodynamic resistance.

[0045] Another core of the present application is to provide a bogie comprising the above bogie covering device and a railway vehicle comprising the above bogie.

[0046] Please refer to Figures 1 to 17 .

[0047] The specific embodiment discloses a bogie covering device 2 for covering the bottom of a bogie, wherein the bogie is provided with a frame body 1 and an axle-mounted brake disc 11, and the bogie covering device 2 comprises: a mounting cross beam for fixedly connecting to the frame body 1 of the bogie; at least two mounting plates, wherein the mounting plates are fixedly arranged on the mounting cross beam, and at least one mounting plate is used for fixedly connecting to the frame body 1 of the bogie; and at least one mounting plate is provided with a containing portion 26 for containing the axle-mounted brake disc 11, and the bottom of the containing portion 26 is protrudingly arranged towards the outer surface of the mounting plate.

[0048] In the process of using the bogie covering device 2 provided by the specific embodiment, first, the mounting cross beam and the mounting plate need to be assembled, and the assembled bogie covering device 2 is installed on the bogie, or the mounting cross beam and the mounting plate are directly installed on the bogie; since at least one mounting plate is provided with a containing portion 26 for containing the axle-mounted brake disc 11, the large-size axle-mounted brake disc 11 can be contained in the containing portion 26, the influence of the large-size axle-mounted brake disc 11 on the installation height of the mounting plate is avoided, and the bogie covering device 2 can be applied to the bogie with the large-size axle-mounted brake disc 11; during travel, since the mounting cross beam and the mounting plate are connected to the frame body 1, the relative movement with the wheel 7 is reduced, which is beneficial to reducing the gap between the wheel 7 and the avoiding hole 27 of the covering plate, further preventing the airflow from entering the bogie device through the avoiding hole 27 to generate the aerodynamic resistance, and making most of the airflow flow along the bottom surface of the bogie covering device 2 from the outside of the bogie covering device 2, which can effectively reduce the aerodynamic resistance and further reduce the energy consumption compared to the airflow directly flowing through the complex components in the bogie covering device 2. In addition, the installation of the mounting plate and the mounting cross beam can reduce the installation stress.

[0049] In a specific embodiment, as shown in Figure 1 , 3 , 9, the part of the accommodation portion 26 protruding from the outer surface of the mounting plate can be spindle-shaped, when the number of accommodation portions 26 is multiple, the multiple accommodation portions 26 can all be set to be spindle-shaped, and the multiple accommodation portions 26 are arranged side by side, and the tip of the spindle-shaped part is arranged along the running direction of the bogie. Of course, the part of the accommodation portion 26 protruding from the outer surface of the mounting plate can also be other shapes, which is determined according to the actual situation, and is not described here.

[0050] In a specific embodiment, as shown in Figure 2 , the mounting beam includes two first mounting beams 21 and two second mounting beams 22 arranged in parallel, and the first mounting beams 21 and the second mounting beams 22 are both arranged perpendicular to the running direction of the bogie; the mounting plate includes two side plates 24, two end plates 23 and an access door 25, the two side plates 24 are respectively arranged at the two ends of the length direction of the first mounting beams 21 and the second mounting beams 22, the two end plates 23 are respectively arranged at the front end of the first mounting beams 21 and the rear end of the second mounting beams 22, and the access door 25 is arranged between the first mounting beams 21 and the second mounting beams 22; the accommodation portion 26 is arranged on the end plate 23.

[0051] In the process of specific connection, a reinforcing rib 233 can be arranged on the inner side of the mounting plate, specifically, a foam core material 2331 can be filled in the reinforcing rib 233, and a carbon fiber layer 2332 is arranged, as shown in Figure 15 . The reinforcing rib 233 can be arranged in a keel shape, which increases the cross-sectional area and improves the strength and modal of each end plate 23 to meet the design requirements; the foam core material 2331 has a low density, which realizes the lightweight of the overall structure; the foam core material 2331 has a porous structure, which can absorb sound and dissipate energy, and can realize the effect of reducing noise in the bogie area to a certain extent.

[0052] The side plate 24 can also be provided with a reinforcing rib 233 as shown in Figure 15 , which is determined according to the actual situation, and is not described here.

[0053] As shown in Figure 16 , the mounting points of the end plate 23 connected with the first mounting beam 21 or the second mounting beam 22 and the mounting points of the access door 25 connected with the first mounting beam 21 or the second mounting beam 22 are embedded with metal mounting blocks 234, which can effectively relieve the stress concentration at the threaded connection, and avoid damage caused by the direct compression of the composite material by the thread; the metal mounting block 234 is bonded with the composite material by epoxy resin.

[0054] As shown in Figure 17As shown, a metal plate 235 is embedded at the connection between the end plate 23 and the mounting arm 5. The metal plate 235 is provided with fiber outlet holes 236. When the carbon fiber material is laid up, the carbon fiber filaments are threaded out from the fiber outlet holes 236, extended to the surrounding carbon fiber cloth, and then laid and injected with resin. After the covering plate is installed, the carbon fiber filaments and the metal plate 235 are subjected to force at the same time, which increases the force-bearing area and reduces the shear force of the connecting resin around the metal plate 235, thereby improving the connection strength.

[0055] Both ends of the first mounting beam 21 and the second mounting beam 22 are connected to the side plate 24, such as Figure 3 As shown, one end plate 23 is provided with a second protrusion 231, and the first mounting beam 21 is provided with a second recess 212 that mates with the second protrusion 231. During assembly, the second protrusion 231 is inserted into the second recess 212; as shown Figure 4 As shown, the other end plate 23 is provided with a second protrusion 231, and the second mounting beam 22 is provided with a second recess 212 that mates with the second protrusion 231. During assembly, the second protrusion 231 of the other end plate 23 is inserted into the second recess 212; as shown Figure 3 As shown, the access door 25 is provided with a first protrusion 252, and the first mounting beam 21 is provided with a first recess 211 that mates with the first protrusion 252. During installation, the first protrusion 252 is inserted into the first recess 211, and the access door 25 is locked in place by a locking mechanism. Figure 6 As shown, the locking mechanism includes a latch 251, which is movable between a first position and a second position and extends out of the access door 25. The second mounting beam 22 is provided with a locking protrusion 221 and an unlocking groove 222. When the latch 251 moves to the first position, it engages with the locking protrusion 221 to lock the access door 25 closed. When the latch 251 moves to the second position, it engages with the unlocking groove 222 to unlock and open the access door 25. Figure 6 As shown, a rack 253 and a locking rod 254 can be provided. The locking rod 254 is used to connect the rack 253 and the locking tongue 251. The rack 253 drives the locking rod 254 to move, thereby driving the locking tongue 251 to move between the first position and the second position. Figure 6 The central locking tongue 251 is in the first position, and the locking tongue 251 cooperates with the locking protrusion 221. At this time, the inspection door 25 is locked and closed. Specifically, the rack 253 can be moved by gears or other means of movement, which will not be elaborated here.

[0056] Preferably, based on the above embodiments, such as Figure 13As shown, the headless bolt 103, the butterfly lock washer 104 can be arranged for fastening, and the mortise and tenon structure mainly realizes the anti-loosening function; the threaded holes of the first mounting beam 21, the second mounting beam 22, the end plate 23, the side plate 24 and other mounting plates are formed with the trumpet holes in advance, the bolt head of the headless bolt 103 is flush with the outer surface of the connected part after the headless bolt 103 is fastened, so as to avoid that the bolt head is hit by foreign matters (such as the gravel rolled up by the wheel) during the driving of the vehicle, and the bolt connection is invalid and the cover plate is damaged.

[0057] Specifically, the tooth-shaped protrusions can be uniformly arranged on the contact surfaces of the butterfly lock washer 104 and the connected part, and the tooth-shaped protrusions are extruded into the surface of the connected part after the headless bolt 103 is tightened, so as to increase the friction and play the anti-loosening role.

[0058] In a specific embodiment, the two sides of the end plate 23 and the two side plates 24 form the avoiding hole 27 for the wheel 7 to extend out, at least one of the end plate 23 and the side plate 24 adjacent to the end plate 23 is provided with the fender 28, the fender 28 is located outside the circumferential direction of the wheel 7, and the fender 28 gradually inclines to the direction close to the wheel 7 from the bottom to the top.

[0059] Specifically, as shown in the drawings, Figure 2 the two sides of the end plate 23 are provided with the fender 28, and the side plate 24 towards the end plate 23 is also provided with the fender 28, the fender 28 on the end plate 23 is fixedly connected with the fender 28 on the side plate 24 during the assembling process, so as to form the integral fender 28, and the fender 28 gradually inclines to the direction close to the wheel 7 from the bottom to the top of the bogie cover device 2, which can effectively block the airflow from being rolled into the bogie during the driving process, and reduce the dust accumulation and ice and snow freezing of the bogie.

[0060] Preferably, the edge of the end plate 23 and the side plate 24 is provided with the turn-up, and the turn-up is perpendicular to the bottom surface of the end plate 23 or the side plate 24.

[0061] As shown in the drawings, Figure 1 the first mounting beam 21 and the second mounting beam 22 are provided with the mounting seat 6, and the two side plates 24 are provided with the connecting bracket 8, and the mounting seat 6 and the connecting bracket 8 are fixedly connected to the frame body 1 when the bogie cover device 2 is connected to the frame body 1.

[0062] In addition to the above-mentioned bogie cover device 2, the present application also provides a bogie comprising a frame body 1, a wheel 7 mounted on the frame body 1, an axle-mounted brake disc 11 and the bogie cover device 2 disclosed in the above-mentioned embodiment, and the structures of other parts of the bogie please refer to the prior art, and the present text will not be repeated here.

[0063] As shown in the drawings, Figure 8As shown, the axle-mounted brake disc 11 is arranged between the two wheels 7 of the frame body 1, and the lower part of the axle-mounted brake disc 11 is arranged in the accommodating part 26 of the mounting plate, so that the overall height of the covering plate can be effectively increased; the mounting arm 5 is arranged at the two ends of the frame body 1 along the running direction, one end of the mounting arm 5 is fixedly connected to the frame body 1, and the other end is fixedly connected to the mounting plate; preferably, the mounting interface for mounting the sanding device, the obstacle avoidance device and the like can be arranged on the mounting arm 5. Figure 1 The frame body 1 is further provided with a shock absorber 4 and an anti-roll torsion bar 3.

[0064] In the process of using the bogie provided in the present application, each plate member in the bogie covering device 2 can be individually removed for the convenience of maintenance and replacement of parts. For example, as shown in Figure 11 When the brake pad 101 and the clamp 102 of the bogie need to be replaced, the end plate 23 at both ends can be removed; when the bogie is visually inspected during maintenance, the maintenance door 25 can be removed, as shown in Figure 12 As shown, the maintenance door 25 adopts a quick-release structure to meet the operation requirements of rapid maintenance.

[0065] In addition to the above-mentioned bogie, the present application also provides a railway vehicle comprising the bogie, and the structures of other parts of the railway vehicle refer to the prior art, which will not be described herein.

[0066] As shown in Figure 10 The railway vehicle comprises a vehicle body 9, and from the side of the railway vehicle, the bogie covering device 2 has a boat-shaped structure, the middle part of the bogie covering device 2 is a flat plane along the running direction of the vehicle body 9, the front end and the rear end of the bogie covering device 2 are upwardly curved inclined structures, and the edges of the mounting plate are provided with flanges with a certain height, so that the airflow entering the bogie can be effectively avoided, and the air resistance is reduced; in addition, the end arc surface 232 can be arranged at the upwardly curved part of the front end and the rear end of the bogie covering device 2, the arrangement of the end arc surface 232 can balance the turning angle of the bogie relative to the vehicle body 9, so that the gap between the bogie covering device 2 and the vehicle body 9 is reduced, the airflow entering the bogie is further reduced, and the air resistance is further reduced.

[0067] The first recess 211 and the second recess 212, the first protrusion 252 and the second protrusion 231, and the first mounting cross beam 21 and the second mounting cross beam 22 mentioned in the present application are only distinguished by position, and have no sequence.

[0068] The various embodiments are described in the specification by way of progression, each building on the last to facilitate ease of understanding. The same or similar parts and / or functions between embodiments can also be referenced using like numerals. Any combination of the embodiments provided herein is within the scope of the present disclosure, and the description made herein is not intended to exhaust all possible combinations.

[0069] The bogie covering device 2, the bogie and the railway vehicle provided by the present application are described in detail above. The principles and implementation manners of the present application are described by applying specific examples in this paper, and the description of the above embodiments is only used to help understand the method of the present application and its core idea. It should be pointed out that, for ordinary skilled persons in the technical field, some improvements and modifications can be made to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A bogie covering device, characterized in that, The application relates to a bogie bottom covering device, wherein the bogie is provided with a frame body (1) and an axle-mounted brake disc (11), and the bogie covering device (2) comprises: a mounting beam for fixedly connecting to the frame body (1) of the bogie; at least two mounting plates fixedly arranged on the mounting beam, wherein at least one of the mounting plates is used for fixedly connecting to the frame body (1) of the bogie, and at least one of the mounting plates is provided with a containing portion (26) for containing the axle-mounted brake disc (11), and the bottom of the containing portion (26) is protrudingly arranged towards the outer surface of the mounting plate; the portion of the containing portion (26) protruding towards the outer surface of the mounting plate is spindle-shaped.

2. The bogie covering device according to claim 1, characterized in that The mounting plates are detachably mounted on the mounting beam through a mortise and tenon structure.

3. The bogie covering device according to claim 2, characterized in that The mounting beam comprises two parallel first and second mounting beams (21 and 22), and the first and second mounting beams (21 and 22) are arranged perpendicularly to the running direction of the bogie; the mounting plate comprises two side plates (24), two end plates (23) and an access door (25), the two side plates (24) are arranged at the two ends of the length direction of the first and second mounting beams (21 and 22) respectively, the two end plates (23) are arranged at the front end of the first mounting beam (21) and the rear end of the second mounting beam (22) respectively, and the access door (25) is arranged between the first and second mounting beams (21 and 22); the containing portion (26) is arranged on the end plate (23).

4. The bogie covering device according to claim 3, characterized in that One of the access door (25) and the first mounting beam (21) is provided with a first protruding portion (252), and the other of the access door (25) and the first mounting beam (21) is provided with a first recessed portion (211) matched with the first protruding portion (252), and the first protruding portion (252) is inserted into the first recessed portion (211); at least one of the access door (25) and the second mounting beam (22) is provided with a locking mechanism for locking or unlocking the access door (25).

5. The bogie covering device according to claim 4, characterized in that The locking mechanism comprises a lock tongue (251) movably arranged on the access door (25) between a first position and a second position; the second mounting beam (22) is provided with a locking protrusion (221) and an unlocking groove (222), when the lock tongue (251) moves to the first position, the lock tongue (251) is matched with the locking protrusion (221) to lock and close the access door (25), and when the lock tongue (251) moves to the second position, the lock tongue (251) is matched with the unlocking groove (222) to unlock and open the access door (25).

6. The bogie cladding apparatus of any one of claims 3-5, wherein, The two sides of the end plate (23) and the two side plates (24) form a clearance hole (27) for the wheel (7) to extend out, at least one of the end plate (23) and the side plate (24) adjacent to it is provided with a mudguard (28), the mudguard (28) is located outside the circumference of the wheel (7), and the mudguard (28) gradually inclines from the bottom to the direction close to the wheel (7).

7. The bogie covering device according to any one of claims 1 to 5, characterized in that The mounting plate and the mounting beam are combined into a boat-shaped structure, the middle position of the boat-shaped structure in the running direction is a plane, and the two ends are inclined upwardly arranged inclined surfaces.

8. A bogie, characterized by The bogie cover device (2) comprises a frame body (1), a wheel (7) mounted on the frame body (1), an axle-mounted brake disc (11), and any one of claims 1-7.

9. A rail vehicle, characterized by The bogie comprises the bogie cover device (2) of claim 8.

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