Non-powered bogie and railway vehicle

Abstract

A non-powered bogie and a railway vehicle, the non-powered bogie comprising a frame, a wheel set (2), a primary suspension device (3), a secondary suspension device (4) and a traction device (5), wherein the frame comprises a cross beam (12), side beams (11) and a primary mounting seat (13); the two side beams (11) are arranged in parallel to each other, and the cross beam (12) is connected between middle portions of the two side beams (11); the primary mounting seat (13) is disposed at end portions of the side beams (11); each side beam (11) comprises a side beam body (11a) and an air spring mounting portion (11b), with the air spring mounting portion (11b) being disposed on an outer side of a middle portion of the side beam body (11a); the cross beam (12) is provided with a central pin hole (1241); the wheel set (2) comprises an axle (21), wheels (22) and an axle box (23), with the axle box (23) being located on inner sides of the wheels (22); the primary suspension device (3) is arranged between the axle box (23) and the primary mounting seat (13); the secondary suspension device (4) is disposed on the air spring mounting portion (11b); and the bottom end of the traction device (5) is inserted into the central pin hole (1241) of the cross beam (12). In the non-powered bogie and the railway vehicle, the stability of supporting and buffering a vehicle body can be improved, and the primary mounting seat (13) as an independent component is assembled with the side beams (11) and can be suitable for bogies with various wheelbases, thereby reducing the production cost.

Description

Non-powered bogies and rail vehicles Technical Field

[0001] The present application relates to rail vehicle running technology, and in particular to a non-powered bogie and a rail vehicle. Background Art

[0002] The bogie is a crucial component of rail vehicles, supporting the vehicle's body and enabling both running and steering. It primarily consists of a frame, wheelset, traction device, brake system, primary and secondary suspension systems, and other components. The frame serves as the primary structure, upon which all other components are mounted.

[0003] A wheelset consists of an axle, two wheels symmetrically mounted on the axle, and two axleboxes. In traditional bogies, the axleboxes are located outside the wheels, with the tops of the axleboxes mating with the side sills in the frame. In recent years, an increasing number of bogies have placed the axleboxes inside the wheels, reducing the distance between the two side sills. This has impacted the assembly of many components, reduced installation space, and made traditional mounting structures unsuitable, necessitating a redesign of the assembly mechanism. Furthermore, the frame structure needs to be adjusted to accommodate the assembly requirements of each component while also meeting strength and load-bearing capacity requirements.

[0004] Summary of the Invention

[0005] In an embodiment of the present application, a non-powered bogie and a rail vehicle are provided.

[0006] According to a first aspect of an embodiment of the present application, a non-powered bogie is provided, comprising:

[0007] The frame comprises: a crossbeam, a side beam and a series of mounting seats; the two side beams are arranged in parallel, and the crossbeam is connected between the middle parts of the two side beams; the series of mounting seats are arranged at the ends of the side beams; the side beams comprise: a side beam body and an empty spring mounting portion, and the empty spring mounting portion is arranged outside the middle part of the side beam body; the crossbeam is provided with a center pin hole;

[0008] Wheelset; the wheelset comprises: an axle and a wheel and an axle box arranged on the axle, the axle box being located inside the wheel;

[0009] The primary suspension device is arranged between the axle box and the primary mounting seat;

[0010] The secondary suspension device is arranged on the air spring mounting portion;

[0011] The bottom end of the traction device is inserted into the center pin hole of the beam.

[0012] According to a second aspect of an embodiment of the present application, there is provided a rail vehicle comprising: the bogie as described above.

[0013] The technical solution provided in the embodiment of the present application is that the structure in the bogie includes: a crossbeam, a side beam and a primary mounting seat; the two side beams are arranged in parallel, and the crossbeam is connected between the middle parts of the two side beams; the primary mounting seat is arranged at the end of the side beam; the side beam includes: a side beam body and an empty spring mounting part, and the empty spring mounting part is arranged on the outside of the middle part of the side beam body; the crossbeam is provided with a center pin hole; the wheelset includes: an axle and a wheel and an axle box arranged on the axle, and the axle box is located on the inner side of the wheel; the primary suspension device is arranged between the axle box and the primary mounting seat; the secondary suspension device is arranged in the empty spring mounting part; the bottom end of the traction device is inserted into the center pin hole of the crossbeam. As a new type of built-in axle box bogie, the secondary suspension device is placed on the outside of the side beam body, so that the distance between the two secondary suspension devices is greater than the distance between the two side beams, which can improve the stability of supporting and buffering the vehicle body.

[0014] In addition, the first-series mounting seat is assembled with the side beam as an independent component. For bogies with different wheelbases, the same side beam can be used, and only the position of the interface in the first-series locating seat needs to be adjusted. Adjusting and manufacturing the first-series locating seat is simpler and more efficient than designing, adjusting and manufacturing the entire side beam. In addition, the side beam can be reused and can be applied to bogies with various wheelbases, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0016] FIG1 is a schematic structural diagram of a bogie provided in an embodiment of the present application;

[0017] FIG2 is a schematic diagram of a top view of a frame in a bogie provided in an embodiment of the present application;

[0018] FIG3 is a schematic diagram of a frame in a bogie provided in an embodiment of the present application from a bottom-up perspective;

[0019] FIG4 is an exploded view of a frame in a bogie provided in an embodiment of the present application;

[0020] FIG5 is a schematic structural diagram of a side beam in a bogie provided in an embodiment of the present application;

[0021] FIG6 is a schematic diagram of a partial structure of a side beam in a bogie provided in an embodiment of the present application;

[0022] FIG7 is a schematic structural diagram of a crossbeam in a bogie provided in an embodiment of the present application;

[0023] FIG8 is a schematic diagram of a partial structure of a crossbeam in a bogie provided in an embodiment of the present application;

[0024] FIG9 is an enlarged view of area A in FIG6 ;

[0025] FIG10 is a partial cross-sectional view of a secondary suspension device and a frame provided in an embodiment of the present application;

[0026] FIG11 is a cross-sectional view of an air spring and a side beam provided in an embodiment of the present application;

[0027] FIG12 is an enlarged view of area B in FIG11 ;

[0028] FIG13 is a schematic structural diagram of an air spring provided in an embodiment of the present application that bears a first load;

[0029] FIG14 is a schematic diagram of the structure of an air spring provided in an embodiment of the present application that bears a second load;

[0030] FIG15 is a schematic diagram showing changes in the bottom elastic member of the air spring of the bogie provided by an embodiment of the present application when subjected to different loads;

[0031] FIG16 is a schematic structural diagram of a primary mounting seat in a bogie assembly provided in an embodiment of the present application;

[0032] FIG17 is a schematic structural diagram of a traction pin provided in an embodiment of the present application;

[0033] FIG18 is a schematic diagram of a traction pin provided in an embodiment of the present application from another angle;

[0034] FIG19 is a schematic diagram of a structure in which a traction pin provided with a stopper is provided according to an embodiment of the present application;

[0035] Figure 20 is a schematic diagram from another angle showing that the traction pin provided in an embodiment of the present application is provided with a stopper.

[0036] FIG21 is a schematic structural diagram of a traction pin provided with a wear plate mounting groove on its side according to an embodiment of the present application;

[0037] FIG22 is a schematic diagram of the structure of a suspension device provided in an embodiment of the present application from a top view;

[0038] FIG23 is a schematic diagram of the structure of a primary suspension device provided in an embodiment of the present application from an upward angle;

[0039] FIG24 is a cross-sectional view of a suspension device according to an embodiment of the present application;

[0040] FIG25 is an enlarged view of area C in FIG24 ;

[0041] FIG26 is a schematic diagram of the structure of a suspension base in a series of suspension devices provided in an embodiment of the present application, viewed from a top angle;

[0042] FIG27 is a cross-sectional view of a suspension base in a suspension device according to an embodiment of the present application;

[0043] FIG28 is a schematic structural diagram of a suspension pin in a suspension device according to an embodiment of the present application;

[0044] FIG29 is a schematic diagram from another angle of a suspension pin in a series of suspension devices provided in an embodiment of the present application.

[0045] FIG30 is a schematic diagram of the structure of a bottom cabin device provided in an embodiment of the present application provided on a bogie;

[0046] FIG31 is a schematic diagram of the structure of the bottom hold device provided in an embodiment of the present application from a top view;

[0047] FIG32 is a schematic diagram of another top view of the bottom hold device provided in an embodiment of the present application;

[0048] FIG33 is a schematic diagram of the structure of the bottom hold device provided in an embodiment of the present application from an upward angle;

[0049] FIG34 is a schematic diagram of another structure of a bottom cabin device provided in an embodiment of the present application provided on a bogie;

[0050] FIG35 is a schematic diagram showing another angle of the bottom cabin device provided in an embodiment of the present application being arranged on a bogie;

[0051] FIG36 is a schematic diagram of the structure of the bottom hold device provided in an embodiment of the present application connected to the frame via a boom assembly;

[0052] FIG37 is an enlarged view of area D in FIG31;

[0053] FIG38 is a cross-sectional view of a bottom cabin device provided by an embodiment of the present application connected to an axle box via a wire rope vibration damper;

[0054] Figure 39 is a schematic diagram of the air water filtration device in the bogie provided in an embodiment of the present application.

[0055] Reference numerals:

[0056] 11-side beam; 11a-side beam body; 11b-empty spring mounting portion; 11c-empty spring mounting hole; 111-side beam upper cover plate; 1111-side beam upper connecting end; 112-side beam lower cover plate; 1121-side beam lower connecting end; 113-side beam inner plate;

[0057] 114 - Side beam outer plate; 1141 - Plate through hole; 1142 - Plate notch; 115 - Empty spring mounting plate; 116 - First additional chamber; 117 - Second additional chamber; 118 - Side beam rib plate; 1181 - Plate through hole; 1182 - Plate ventilation notch; 1183 - Liquid passage;

[0058] 12-crossbeam; 121-crossbeam upper cover plate; 122-crossbeam lower cover plate; 123-crossbeam outer plate; 1231-crossbeam connection end; 124-crossbeam inner plate; 1241-center pin hole; 125-crossbeam end plate; 126-crossbeam rib plate; 127-crossbeam plate connection assembly; 128-lateral traction stop;

[0059] 13-primary mounting seat; 131-upper clamping arm; 132-lower clamping arm; 133-primary positioning hole; 134-shock absorber connection hole; 135-bogie compartment connection hole;

[0060] 141 - Main water filter circuit; 142 - First water filter branch circuit; 143 - Second water filter branch circuit; 144 - Driving impeller; 145 - Compression impeller; 146 - Air filter; 1471 - Driving gear; 1472 - Driven gear; 148 - Control assembly; 149 - Humidity sensor; 1410 - One-way gas valve;

[0061] 177-Additional air chamber;

[0062] 2-wheelset; 21-axle; 22-wheel; 23-axle box;

[0063] 3-primary suspension device; 31-suspension base; 311-suspension chamber; 312-first magnetic member; 313-primary limiting boss; 314-primary axle box positioning pin; 32-suspension pin; 321-primary limiting hole; 322-ring platform; 323-primary frame positioning pin; 33-side stop block; 34-bottom stop block;

[0064] 4-Secondary suspension device; 41-Air spring; 42-Air spring guide column; 43-Elastic member; 44-Air spring mounting sleeve; 45-Adjusting clearance;

[0065] 5-traction device; 51-traction pin; 511-pin body; 5111-pin connecting arm; 5112-hollowed area; 512-vehicle body connecting part; 513-frame stop part; 514-wear plate mounting groove; 52-longitudinal stop assembly; 53-lateral stop assembly; 54-longitudinal wear plate.

[0066] 601-Bottom hold device; 602-Side hold device; 603-Diversion device; 61-Bottom hold frame; 611-Bottom hold longitudinal beam; 612-Bottom hold short crossbeam; 613-Bottom hold long crossbeam; 614-Bottom hold end beam; 615-Bottom hold diagonal beam; 62-Bottom hold skin; 621-Skin body; 622-Skin side; 623-Skin side stop; 624-Brake pad replacement window; 625-Brake disc avoidance hole; 63-Boom assembly; 631-Boom body; 632-First sealing gasket; 633-Boom connecting nut; 634-Second sealing gasket; 64-Wire rope vibration damper; 651-Inspection door; 652-Hinge; 653-Locking piece;

[0067] 71-Vertical shock absorber. DETAILED DESCRIPTION

[0068] In order to make the technical solutions and advantages of the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, and are not an exhaustive list of all the embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other unless they conflict.

[0069] This embodiment provides a non-powered bogie that can be used in rail vehicles. The rail vehicle can be fuel-powered, gas-powered, or electric-powered. The vehicle can be a conventional train, an EMU, a subway, a light rail, or the like.

[0070] In this embodiment, the vehicle length direction is referred to as the longitudinal direction, the vehicle width direction is referred to as the transverse direction, and the vehicle height direction is referred to as the vertical direction, vertical direction or vertical direction.

[0071] As shown in FIG. 1 to FIG. 4 , the non-powered bogie provided in this embodiment includes: a frame, a wheelset 2 , a primary suspension device 3 , a secondary suspension device 4 and a traction device 5 .

[0072] The frame comprises side beams 11, a crossbeam 12, and primary mounting brackets 13. The two side beams 11 are arranged in parallel, with the crossbeam 12 connected between their midsections. The primary mounting brackets 13 are located at the ends of the side beams, providing an interface for connecting to the primary suspension system 3. The crossbeam 12 has a center pin hole 1241, into which the bottom end of the traction device 5 is inserted. This pin hole, in conjunction with the crossbeam 12, transmits longitudinal traction or braking force between the car body and the bogie.

[0073] As shown in Figure 5, the side beam 11 includes: a side beam body 11a and an empty spring mounting portion 11b. The empty spring mounting portion 11b is arranged on the outer side of the middle part of the side beam body 11a. The empty spring mounting portion 11b is used to install the secondary suspension device 4. The top of the secondary suspension device 4 is connected to the car body and is used to buffer the force between the car body and the bogie.

[0074] As shown in Figure 1, the wheelset 2 is mounted at the end of the side sill 11. The wheelset 2 includes an axle 21, wheels 22 mounted on the axle 21, and an axlebox 23. The axlebox 23 is located inboard of the wheels 22, forming a bogie with an internal axlebox. A primary suspension device 3 is installed between the axlebox 23 and the side sill 11 to buffer the forces acting between the bogie and the wheelset. Specifically, the primary suspension device 3 is located between the axle 23 and the primary mounting seat 13.

[0075] The technical solution provided in this embodiment is that the frame in the bogie includes: a crossbeam, a side beam and a primary mounting seat; the two side beams are arranged in parallel, and the crossbeam is connected between the middle parts of the two side beams; the primary mounting seat is arranged at the end of the side beam; the side beam includes: a side beam body and an empty spring mounting part, and the empty spring mounting part is arranged on the outside of the middle part of the side beam body; the crossbeam is provided with a center pin hole; the wheelset includes: an axle and wheels and an axle box arranged on the axle, and the axle box is located on the inner side of the wheel; the primary suspension device is arranged between the axle box and the primary mounting seat; the secondary suspension device is arranged in the empty spring mounting part; the bottom end of the traction device is inserted into the center pin hole of the crossbeam. As a new type of built-in axle box bogie, the secondary suspension device is placed on the outside of the side beam body, so that the distance between the two secondary suspension devices is greater than the distance between the two side beams, which can improve the stability of supporting and buffering the vehicle body.

[0076] In addition, the first-series mounting seat 13 is assembled with the side beam 11 as an independent component. For bogies with different wheelbases, the same side beam can be used, and only the position of the interface in the first-series positioning seat needs to be adjusted. Adjusting and manufacturing the first-series positioning seat is simpler and more efficient than designing, adjusting and manufacturing the entire side beam. In addition, the side beam can be reused and can be applied to bogies with various wheelbases, thereby reducing production costs.

[0077] Based on the above technical solution, this embodiment provides an implementation of a side beam 11. As shown in Figures 4, 5, and 6, the side beam 11 includes an upper side beam cover plate 111, a lower side beam cover plate 112, an inner side beam upright plate 113, and an outer side beam upright plate 114. The lower side beam cover plate 112 is connected between the bottom ends of the inner side beam upright plate 113 and the outer side beam upright plate 114, and the upper side beam cover plate 111 is connected between the top ends of the inner side beam upright plate 113 and the outer side beam upright plate 114. The upper side beam cover plate 111, the lower side beam cover plate 112, the inner side beam upright plate 113, and the outer side beam upright plate 114 are connected to form a box-shaped side beam.

[0078] The inner portion of the side beam upper cover plate 111 that extends beyond the side beam inner vertical plate 113 serves as the side beam upper connecting end 1111 , and the inner portion of the side beam lower cover plate 112 that extends beyond the side beam inner vertical plate 113 serves as the side beam lower connecting end 1121 .

[0079] As shown in Figures 7 and 8, the crossbeam 12 includes an upper crossbeam cover plate 121, a lower crossbeam cover plate 122, and an outer crossbeam plate 123. The upper crossbeam cover plate 121 is connected to the top of the outer crossbeam plate 123, and the lower crossbeam cover plate 122 is connected to the bottom of the outer crossbeam plate 123. The portions of the outer crossbeam plate 123 that extend beyond the upper crossbeam cover plate 111 serve as crossbeam connecting ends 1231. These connecting ends 1231 are inserted between the upper side beam connecting end 1111 and the lower side beam connecting end 1121 and are connected to the inner side beam plate 113. The upper crossbeam cover plate 121 is butt-jointed to the upper side beam connecting end 1111, while the lower crossbeam cover plate 122 is butt-jointed to the lower side beam connecting end 1121.

[0080] For structures with separate side beams and cross beams, traditional solutions typically create through-holes in the side beams, through which the cross beams pass for connection and fixation. To ensure the required strength of the side beams, the side beams must be large enough to accommodate the cross beams and meet the vehicle's load capacity. However, this increases the size and weight of the side beams, further complicating the design, manufacture, transportation, and assembly of the bogie. The solution provided in this embodiment, however, eliminates the need for holes in the side beams for connection to the cross beams. This reduces the size and weight of the side beams while maintaining sufficient strength, facilitating a lightweight bogie design.

[0081] Building on the above technical solution, the crossbeam 12 also includes an inner crossbeam plate 124. This cylindrical structure serves as a center pin hole 1241, into which the traction pin of the traction device can be inserted, transmitting traction or braking force to the crossbeam. The inner crossbeam plate 124 is located between the two outer crossbeam plates 123. The upper crossbeam cover plate 121 is connected between the tops of the inner crossbeam plate 124 and the outer crossbeam plates 123, and the lower crossbeam cover plate 122 is connected between the bottoms of the inner crossbeam plate 124 and the outer crossbeam plates 123.

[0082] There are two crossbeam upper cover plates 121, one on each side of the crossbeam inner plate 124 and connected between the crossbeam inner plate 124 and the crossbeam outer plate 123. There are two crossbeam lower cover plates 122, one on each side of the crossbeam inner plate 124 and connected between the crossbeam inner plate 124 and the crossbeam outer plate 123.

[0083] The use of two crossbeam upper covers 121 and two crossbeam lower covers 122 connected between the crossbeam inner plates 124 and the crossbeam outer plates 123 can improve the strength of the crossbeam, and the crossbeam inner plates 124 form a space for inserting the traction pin, thereby realizing the transmission of traction and braking force between the vehicle body and the frame.

[0084] A specific solution: the transverse length of the crossbeam upper cover plate 121 is smaller than the crossbeam inner plate 124. Accordingly, there are two connecting ends 111 on the side beam, which are respectively inserted into both sides of the crossbeam inner plate 124 and connected to the crossbeam upper cover plate 121.

[0085] Furthermore, the crossbeam 12 also includes a crossbeam end plate 125, which extends vertically and connects between the inner crossbeam plate 124 and the outer crossbeam plate 123. Together with the upper crossbeam cover plate 121, the lower crossbeam cover plate 122, the outer crossbeam plate 123, and the inner crossbeam plate 124, the crossbeam end plate 125 forms a hollow box-like structure. Through holes are provided in the crossbeam end plate 125 to reduce weight and also serve as ventilation holes to keep the interior of the box-like structure dry.

[0086] Furthermore, the crossbeam 12 also includes crossbeam ribs 126, which are connected between the inner crossbeam plate 124 and the outer crossbeam plate 123. Multiple crossbeam ribs 126 are arranged at intervals. These ribs 126 enhance the strength of the crossbeam 12. They also have through-holes for weight reduction and serve as ventilation holes to keep the interior of the box-type structure dry. The tops of the crossbeam ribs 126 are recessed to create a gap between them and the crossbeam upper cover plate 121, reducing local stiffness and allowing for deformation.

[0087] Based on the above technical solution, a crossbeam-vertical plate connection assembly 127 is used to connect the inner crossbeam plate 124 and the outer crossbeam plate 123. This assembly comprises a crossbeam-vertical plate connection plate and a bolt. The crossbeam-vertical plate connection plate is positioned within the center pin hole. The bolt passes through the center pin hole, through the bolt holes in the crossbeam-vertical plate connection plate and the bolt holes in the outer crossbeam plate 123, and then connects with a nut. The crossbeam-vertical plate connection assembly 127 also serves as a stop for the traction pin, mitigating any rigid impact with the traction pin.

[0088] Furthermore, the crossbeam 12 further includes a transverse traction stop 128 located in the center pin hole 1241 and fixed to both ends of the crossbeam inner vertical plate 124 in the transverse direction, for limiting the transverse relative displacement between the traction pin and the crossbeam.

[0089] In this embodiment, the secondary suspension system includes an air spring and an air spring guide. As shown in Figures 6, 9, and 10, the air spring mounting portion 11b is a box-shaped structure with a first additional chamber 116 therein, while the side member body 11a is a box-shaped structure with a second additional chamber 117 therein. The first additional chamber 116 and the second additional chamber 117 are connected.

[0090] An empty spring mounting sleeve 44 is provided in the empty spring mounting portion 11 b . The internal space of the empty spring mounting sleeve 44 is used to communicate with the gas chamber 411 inside the air spring. The internal space of the empty spring mounting sleeve 44 is also communicated with the first additional chamber 116 .

[0091] The first additional chamber 116 in the air spring mounting portion and the second additional chamber 117 in the side member body can provide auxiliary gas space, thereby improving the buffering capacity of the air spring and helping to reduce the vibration of the vehicle compartment.

[0092] The hollow spring mounting portion 11b includes a hollow spring mounting plate 115. The ends of the hollow spring mounting plate 115 are bent relative to the center of the hollow spring mounting plate 115 toward the side beam outer plate 114 and connected to the side beam outer plate 114. The side beam upper cover plate 111 extends outward and connects to the top end of the hollow spring mounting plate 115, while the side beam lower cover plate 112 extends outward and connects to the bottom end of the hollow spring mounting plate 115. The hollow spring mounting plate 115, the side beam upper cover plate 111, the side beam lower cover plate 112, and the side beam outer plate 114 enclose a first additional chamber 116.

[0093] The portion of the side member upper cover plate 111 that extends into the first additional chamber 116 is provided with a through-hole, serving as the air spring mounting hole 11c. The air spring mounting sleeve 44 is located within the first additional chamber 116 and is fixed to the inner surface of the side member upper cover plate 111, corresponding to and communicating with the air spring mounting hole 11c. The bottom of the air spring mounting sleeve 44 is suspended in the air, allowing the interior space of the air spring mounting sleeve 44 to communicate with the first additional chamber 116. An air spring guide post 42 is provided at the bottom of the air spring, with its bottom end open, connecting the first additional chamber 116 with the chamber within the air spring.

[0094] Furthermore, a plate through hole 1141 is formed on the side beam outer plate 114 to connect the first additional chamber 116 with the second additional chamber 117. Specifically, there are two plate through holes 1141, which are arranged in sequence along the length direction of the side beam outer plate 114.

[0095] Furthermore, as shown in FIG10 , a plate notch 1142 is provided at the bottom end of the side beam outer plate 114, which can enable the first additional chamber 116 and the second additional chamber 117 to communicate with each other on the one hand, and can achieve drainage on the other hand, so that the water in the empty spring mounting portion 11b enters the side beam body 11a from the plate notch 1142, and is then discharged from the drainage hole at the bottom of the side beam body 11a.

[0096] Based on the above technical solution, the side sill body 11a further includes side sill ribs 118. These ribs 118 are connected between the inner side sill panels 113 and the outer side sill panels 114. Multiple ribs 118 are spaced apart along the length of the side sill body 11a. The inclination angle of the ribs 118 can be adjusted based on the shape of the side sill 11. For example, the ribs 118 can be perpendicular to the lower side sill cover 112 or the upper side sill cover 111.

[0097] The side beam rib 118 has a rib through hole 1181 formed therein, which may be located in the middle of the side beam rib 118. The side beam rib 118 divides the second additional chamber 117 into a plurality of small spaces, each of which is connected via the rib through hole 1181.

[0098] Furthermore, the top of the side beam rib 118 is recessed downward to form a rib ventilation notch 1182. A liquid passageway 1183 is provided at the bottom end of the side beam rib 118 to facilitate the flow of liquid. Liquid at the end of the second additional chamber 117 can flow from the liquid passageway 1183 to the middle of the side beam and then be discharged from the drainage hole at the bottom of the side beam. The liquid passageway 1183 is located away from the side beam rib 118, where it connects to the side beam inner vertical plate 113 and the side beam outer vertical plate 114. For example, the liquid passageway 1183 is located in the middle of the bottom of the side beam rib 118.

[0099] Since both side edges of the side beam rib 118 are welded to the side beam inner plate 113 and the side beam outer plate 114 respectively, setting the liquid through port 1183 in the middle position of the bottom of the side beam rib 118 can avoid interference with the welding point, thereby ensuring the welding strength.

[0100] On the basis of the above technical solution, this embodiment also provides an implementation method for connecting the secondary suspension device 4 with the side beam 11: as shown in Figures 11 to 15, the internal space of the empty spring mounting sleeve 44 serves as the empty spring mounting hole 11c, and an elastic member 43 is arranged in the empty spring mounting sleeve 44.

[0101] The traction device 4 includes an air spring 41 and an air spring guide 42. The air spring guide 42 is arranged at the bottom of the air spring 41. The air spring guide 42 is inserted into the air spring mounting hole 11c and contacts the elastic member 43. The top of the air spring 41 is connected to the vehicle body to bear the vehicle body load.

[0102] As shown in FIG13 , when the external load applied to the air spring 41 is a relatively large first load, the air spring 41 falls on the top surface of the air spring mounting portion 11 b , and the air spring guide column 42 applies pressure to the elastic member 43 to compress the elastic member 43 .

[0103] As shown in Figure 14, when the external load applied to the air spring 41 is a relatively small second load, the second load is less than the rebound force of the elastic member 43. The rebound force of the elastic member 43 pushes the air spring 41 upward, leaving an adjustment gap 45 between the air spring 41 and the air spring mounting portion 11b. An adjustment washer can be inserted into this adjustment gap 45 to adjust the height of the air spring. The second load can be zero or less than the rebound force of the elastic member.

[0104] During the static pressure stage of bogie production or maintenance, the component on top of the air spring is lifted by a jack. The air spring automatically moves upward and disengages from the frame due to the rebound force of the elastic member 43, facilitating the insertion of an adjustment washer into the gap between the air spring and the frame. The component on top of the air spring can be a car body, which is raised using a car lift. Alternatively, the component on top of the air spring can be a bolster, which is lifted by a jack.

[0105] In this solution, when the second load applied to the air spring is less than the rebound force of the elastic part or the second load is zero, the air spring automatically rises under the action of the rebound force of the elastic part. That is to say, it is only necessary to lift the component above the air spring to insert the adjustment pad, which eliminates the step of lifting the air spring in the traditional solution, can greatly reduce the workload and improve work efficiency. In addition, since no tools are used to lift the air spring, damage to the air spring is avoided, its service life is extended, and its reliability is improved.

[0106] Specifically, a step surface is provided on the lower inner wall of the empty spring mounting sleeve 44 , and the elastic member 43 is provided on the step surface.

[0107] The elastic member 43 may be made of a material having a certain elastic deformation capability, such as a steel spring.

[0108] The right image in Figure 15 shows the elastic member 43 in its free state, with its height being H3. The left image in Figure 15 shows the air spring subjected to the first load, with the elastic member 43 compressed to an overall height of H1. The center image in Figure 15 shows the vehicle body or bolster being lifted, with the elastic member 43 acting only on the weight of the air spring. This weight is smaller than the rebound force of the elastic member 43, resulting in an overall height of H2, pushing the air spring upward.

[0109] As shown in Figures 3 and 16, one end of the first mounting seat 13 has an upper clamping arm 131 and a lower clamping arm 132, and a space for accommodating the end of the side beam 11 is formed between the upper clamping arm 131 and the lower clamping arm 132. The upper clamping arm 131 and the lower clamping arm 132 are respectively covered on the upper surface and the lower surface of the end of the side beam 11 and are fixedly connected to the end of the side beam, for example, by a welding process.

[0110] The central bottom surface of the primary mounting seat 13 is provided with an interface for connecting to the primary suspension system, which is located below the primary mounting seat 13. The wheelset load is transmitted to the primary mounting seat 13 through the primary suspension system, which then bears this load. The position of the interface for connecting to the primary suspension system can be set and machined according to the bogie wheelbase. The side beam can be combined with different primary locating seats to meet the requirements of bogies with different wheelbases.

[0111] Both ends of the side beam 11 are provided with primary mounting seats 13 , and a frame requires four primary mounting seats 13 in total.

[0112] This embodiment provides a specific implementation: As shown in FIG16 , the distance between the upper clamping arm 131 and the middle of the primary mounting base is greater than the distance between the lower clamping arm 132 and the middle of the primary mounting base. This is equivalent to the upper clamping arm 131 being much higher than the middle of the primary mounting base, while the lower clamping arm 132 is only slightly lower than the middle of the primary mounting base.

[0113] The upper clamping arm 131, the lower clamping arm 132 and the middle part of the first series mounting seat have a smooth transition. The upper clamping arm 131, the lower clamping arm 132 and the middle part of the first series mounting seat are an integrally formed structure, for example, they can be formed by casting.

[0114] In one embodiment, the central bottom surface of the primary mounting seat 13 is provided with two primary positioning holes 133, arranged sequentially along the length of the side beam, serving as interfaces for connecting to the bogie's primary suspension. A positioning pin at the top of the primary suspension is inserted into the primary positioning holes 133 to define the primary suspension's position.

[0115] The shape of the first series positioning hole 133 can be circular, oblong or other shapes, and can be specifically set according to the positioning pin on the top of the first series suspension device. In this embodiment, the first series positioning hole 133 is a circular hole.

[0116] Furthermore, the primary mounting seat 13 is provided with an interface for connecting to a primary vertical vibration damper. The primary vertical vibration damper is connected to the axle box on the wheelset at its bottom end and to the primary mounting seat 13 at its top end, and is used to buffer the vertical vibration between the wheelset and the side beam.

[0117] Specifically, a damper connection hole 134 is provided at the end of the primary mounting base 13, away from the side member, to serve as an interface for connecting to the primary vertical damper. This hole 134 extends through the upper and lower surfaces of the primary mounting base 13. The primary vertical damper is secured to the primary mounting base 13 via bolts after passing through this hole 134.

[0118] Furthermore, the first-stage mounting seat 13 can also be provided with an interface for connecting to the bogie compartment. The bogie compartment is arranged at the bottom and side of the bogie to cover the bogie to protect the bogie, and air guide ports are formed at the front and rear ends of the bogie respectively, so that air enters the bogie from the air guide ports and forms an orderly flow, and then flows out from another air guide port, thereby improving the heat dissipation effect of the bogie.

[0119] Regarding the solution for connecting the bogie pod to the primary mounting bracket 13, a bogie pod connection hole 135 is provided at the end of the primary mounting bracket 13, away from the side beam, to serve as an interface for connecting to the bogie pod. Four bogie pod connection holes 135 are arranged around the shock absorber connection holes 134 and are connected to the bogie pod via bolts.

[0120] The traction device 5 includes a traction pin, which is arranged between the frame and the vehicle body. Specifically, the top of the traction pin is connected to the vehicle body, and the bottom cooperates with the crossbeam 12 to transmit longitudinal force between the vehicle body and the frame.

[0121] Alternatively, the bogie in this embodiment may employ a bolster, positioned above the crossbeam. The top end of the draft pin is connected to the bolster, while the bottom end engages the crossbeam 12 to transmit longitudinal forces between the bolster and the frame. In this bogie, the secondary suspension device 4 is disposed between the frame and the bolster.

[0122] As shown in Figures 17 and 18, the towing pin 51 provided in this embodiment includes a pin body 511, a vehicle body connection portion 512, and a frame stop portion 513. The vehicle body connection portion 512 is located at one end of the pin body 511, and the frame stop portion 513 is located at the other end of the pin body 511. The vehicle body connection portion 512 is used to connect to the vehicle body or the bolster, and the frame stop portion 513 is used to engage with the crossbeam 12.

[0123] One end of the pin main body 511 branches into two pin connecting arms 5111, and each pin connecting arm 5111 is connected to a vehicle body connecting portion 512. A hollow area 5112 is formed between the two pin connecting arms 5111.

[0124] Compared to conventional traction pins, the top of the traction pin 51 provided in this embodiment is hollowed out to form a hollowed-out area 5112, which significantly reduces the weight of the traction pin 51. After simulating this design, technicians found that the hollowed-out area 5112 does not affect the strength of the traction pin 51 itself.

[0125] Moreover, the space freed up by the hollowed-out area 5112 can accommodate other components, such as brake lines, signal cables, etc. In the traditional solution, these lines, cables, etc. are routed from the periphery of the traction pin and fixed to the frame by cable ties and fasteners. On the one hand, this makes the layout of the lines and cables more messy, and easily interferes with surrounding components and is also prone to wear. In particular, there will be relative movement between the traction pin and the frame. Especially when the vibration is large, these lines and cables will produce greater shaking, which further increases the possibility of interference with surrounding components. On the other hand, it is necessary to set up multiple fixed points and fix the lines and cables to the frame by cable ties and fasteners, which increases the number of parts and the workload of assembly and maintenance. Moreover, if the cable ties and fasteners fall off during the driving of the vehicle, the lines and cables will become loose, causing greater shaking and interference with other components.

[0126] This embodiment routes these pipes and cables through the hollowed-out area 5112, resolving the issues inherent in conventional solutions. The pipes and cables are restrained within the pull pin, preventing significant movement. This reduces the likelihood of interference and wear with surrounding components, extending the service life of the pipes and cables while also improving reliability and safety. Furthermore, the number of components such as cable ties and fasteners is reduced, reducing the workload for assembly and maintenance. Furthermore, scattered pipes and cables are virtually invisible from the outside, creating a more organized and tidy structure.

[0127] The hollow area formed between the two pin connecting arms can significantly reduce the weight of the traction pin, thereby reducing the workload during the traction pin assembly process and reducing material costs; and the hollow area can be used as a wire passing space, and pipes, cables, etc. can be stored in the hollow area, which can solve the problem of pipes and cables easily interfering with and wearing surrounding components, thereby improving reliability and safety and reducing maintenance costs.

[0128] On the basis of the above technical solution, the edge of the hollowed-out area 5112 is a curved shape that is recessed toward the pin main body 511 , so that there is no stress concentration portion, thereby improving the strength of the traction pin 51 .

[0129] Furthermore, hollow areas 5112 are provided on both sides of the pin body 511. The hollow areas 5112 on both sides are arranged symmetrically, serving as wire passages, allowing pipes and cables to pass from one side of the traction pin 51 through the hollow areas 5112 to the other side of the traction pin 51. The symmetrical arrangement can ensure that the forces on both sides of the traction pin 51 are balanced, preventing deformation of the traction pin due to excessive torsional force.

[0130] In one specific solution, the cross-sectional area of ​​the pin body 511 gradually increases from the frame stop 513 toward the vehicle body connection portion 512. The top of the pin body 511 has a larger cross-sectional area, where it connects to the vehicle body connection portion 512. This increases the area of ​​the connection with the vehicle body or bolster, thereby improving connection strength and reliability.

[0131] Furthermore, the distance between the two body connection parts 512 is greater than the distance between the two pin connection arms 5111, which is equivalent to the body connection part 512 further expanding outward relative to the pin connection arm 5111, further increasing the area of ​​the connection region with the body or the pillow beam.

[0132] In one embodiment, the vehicle body connection portion 512 has two vehicle body connection ends, each of which has at least two bolt holes. This is equivalent to four bolts passing through each bolt hole to connect to the vehicle body or the bolster, providing high connection strength and reliability.

[0133] The two vehicle body connecting parts 512 are symmetrically arranged, which can make the traction pin 51 bear the force evenly and reduce the probability of torsional deformation.

[0134] On the basis of the above technical solution, the cross section of the frame stop portion 513 is a roughly rectangular structure having two transverse stop side surfaces and two longitudinal stop side surfaces, with a transition chamfer structure provided between the transverse stop side surfaces and the longitudinal stop side surfaces.

[0135] The longitudinal stop side is used to cooperate with the cross beam 12 to transmit longitudinal traction or braking force. The transverse stop side is used to cooperate with the cross beam 12 to perform transverse positioning and limit the relative displacement between the car body and the bogie in the transverse direction.

[0136] As shown in Figures 17 to 20, longitudinal stoppers are provided with longitudinal wear plates 54 on their sides, and longitudinal stop assemblies 52 are connected to the outer sides of longitudinal wear plates 54. A longitudinal stop assembly 52 is provided on both sides of the traction pin 51. During forward vehicle travel, the longitudinal stop assembly on one side contacts the crossbeam 12 to transmit longitudinal traction or braking force; during reverse vehicle travel, the longitudinal stop assembly on the other side contacts the crossbeam 12 to transmit longitudinal traction or braking force.

[0137] A transverse stop assembly 53 is connected to the transverse stop surface and is provided on both sides of the traction pin 51. When the vehicle negotiates a curve, such as turning left, the transverse stop assembly 53 on the right side of the traction pin 51 contacts the crossbeam, transmitting a transverse force to move the vehicle leftward to follow the bogie. When turning right, the transverse stop assembly 53 on the left side of the traction pin 51 contacts the crossbeam, transmitting a transverse force to move the vehicle rightward to follow the bogie.

[0138] As shown in Figure 21, the side of the frame stopper 513 is provided with a wear plate mounting groove 514, into which the longitudinal wear plate 54 is inserted for installation. During the assembly of the longitudinal wear plate 54, the longitudinal wear plate 54 is first placed into the wear plate mounting groove 514. The lower sidewall of the wear plate mounting groove 514 provides a certain degree of support for the longitudinal wear plate 54. Therefore, the operator only needs to press the longitudinal wear plate to prevent it from falling, without applying a large supporting force. This makes it easier to adjust the position of the longitudinal wear plate and align the bolt holes, which is convenient, quick, and less labor-intensive.

[0139] In addition, during vehicle driving, the lower end side wall of the wear plate mounting groove 514 plays a certain supporting role on the longitudinal wear plate 54, reducing the probability of the longitudinal wear plate falling due to loose bolts, thereby reducing the probability of the traction pin directly contacting the longitudinal stop assembly, ensuring the service life of the traction pin, and improving driving safety and reliability.

[0140] Furthermore, wear plate mounting holes 515 for mounting the longitudinal wear plate 54 are provided at the bottom of the wear plate mounting slot 514. The wear plate mounting holes 515 are arranged along the edge of the bottom surface of the wear plate mounting slot 514. For example, as shown in FIG21 , three wear plate mounting holes 515 are spaced apart at the upper edge of the bottom surface of the wear plate mounting slot 514, one wear plate mounting hole 515 is provided in the middle of each of the left and right edges, and three wear plate mounting holes 515 are spaced apart at the lower edge.

[0141] In addition, the depth of wear plate mounting groove 514 is equal to the thickness of longitudinal wear plate 54, so that longitudinal wear plate 54 can be completely embedded in wear plate mounting groove 514. Alternatively, the depth of wear plate mounting groove 514 is less than the thickness of longitudinal wear plate 54, so that longitudinal wear plate 54 protrudes from the side of the traction pin, thereby further reducing the probability of contact between longitudinal stop assembly 52 and traction pin 54.

[0142] As shown in Figures 22 to 29, the primary suspension device provided in this embodiment includes a suspension base 31 and a suspension pin 32. The suspension base 31 is located at the bottom, with its bottom end connected to the axle box in the wheelset. The suspension pin 32 is located at the top, with its top end connected to the frame.

[0143] 26 as an example, the suspension base 31 is provided with a suspension cavity 311 with an open top, and a first magnetic member 312 is provided on the sidewall of the suspension cavity 311. The first magnetic member 312 can be a permanent magnet or an electromagnet.

[0144] The suspension pin 32 can enter and exit the suspension chamber 311 through the opening. The suspension pin 32 is magnetic, and its magnetic pole is the same as that of the first magnetic member 312. If the first magnetic member 312 has an N pole, the suspension pin 32 also has an N pole; if the first magnetic member 312 has an S pole, the suspension pin 32 also has an S pole. A mutual repulsive force is generated between the suspension pin 32 and the first magnetic member 312.

[0145] The suspension pin 32 itself can be made of a permanent magnet or an electromagnet. Alternatively, the suspension pin 32 itself is non-magnetic, and a second magnetic member is provided inside or on the surface of the suspension pin 32, wherein the magnetic pole of the second magnetic member is the same as that of the first magnetic member.

[0146] When the load on the frame is large, downward pressure is applied to the suspension pin 32 so that the suspension pin 32 overcomes the mutual repulsion of the magnetic poles and moves downward, and a larger portion of the suspension pin 32 enters the suspension cavity 311. When the load on the frame is small, the mutual repulsion of the magnetic poles pushes the suspension pin 32 upward. The load is buffered by the magnetic mutual repulsion. Similarly, when the road surface on which the rail vehicle travels is uneven, the vibration of the wheel and rail is transmitted to the primary suspension device through the wheelset. The mutual repulsion of the magnetic poles makes the vertical movement of the suspension pin 32 smaller than the vertical movement of the suspension base 31, achieving the effect of buffering the wheel and rail vibration, reducing the vibration of the car and improving ride comfort. In addition, there is no contact between the suspension pin 32 and the suspension base 31, and no abnormal noise will be generated. The probability of mechanical contact between the two is also small, thereby reducing wear and extending the service life.

[0147] This primary suspension device is used on the bogie of a rail vehicle. The suspension pin is used to connect to the frame, and the suspension base is used to connect to the wheelset axle box. This primary suspension device can buffer the vibration between the frame and the wheelset. In addition, the suspension pin and the suspension base are not in direct contact, so no vibration or abnormal noise will be generated, which also reduces mechanical wear and extends the service life of each component.

[0148] The first magnetic member 312 is arranged along the circumference of the suspension base 31. The first magnetic member 312 can be a closed ring or an open ring. Alternatively, there are multiple first magnetic members 312, which are evenly arranged along the circumference of the suspension base 31. In the drawings of this embodiment, four first magnetic members 312 are evenly arranged along the circumference of the suspension base 31 to maintain a uniform magnetic field between the suspension pins, allowing the suspension pins 32 and the suspension base 31 to move relative to each other in the vertical direction, while reducing relative movement in the horizontal direction.

[0149] When the suspension pin 32 is subjected to a large vehicle load or the wheel / rail experiences a large instantaneous vibration amplitude, the suspension pin 32 may contact the suspension base 31. Side stops 33 are provided on the circumference of the suspension pin 32. The side stops 33 are arranged in a one-to-one correspondence with the first magnetic member 312. The side stops 33 contact the first magnetic member 312, preventing direct contact between the suspension pin 32 and the first magnetic member 312. This reduces impact wear on the suspension pin 32 and the first magnetic member 312, further extending their service life.

[0150] In this embodiment, four side stoppers 33 are evenly arranged on the outer circumference of the suspension pin 32 , and the positions of the side stoppers 33 are aligned with the first magnetic member 312 .

[0151] Furthermore, a bottom stop block 34 is provided between the bottom end of the suspension pin 32 and the suspension base 31 , specifically between the bottom end of the suspension pin 32 and the bottom wall of the suspension chamber 311 , to avoid direct contact between the bottom end of the suspension pin 32 and the suspension base 31 .

[0152] The side stop block 33 can be made of materials such as felt, silica gel, rubber, etc., and has a certain buffering capacity.

[0153] Regarding the shapes of the suspension base 31 and suspension pin 32, this embodiment provides a method: the cross-sectional area of ​​the suspension chamber 311 gradually decreases as it moves inward from the opening, with the cross-sectional area at the opening being the largest. Accordingly, the cross-sectional area of ​​the suspension pin 32 gradually decreases as it enters the suspension chamber 311, resulting in a larger top and smaller bottom shape for easier entry and exit from the suspension chamber 311.

[0154] One solution is that the cross-section of the suspension pin 32 is circular, and further, the suspension pin 32 is truncated cone-shaped. The side wall of the suspension cavity 311 is a conical surface.

[0155] An annular step 322 is provided at the end of the suspension pin 32 that faces the interior of the suspension chamber 311, that is, at the bottom edge of the suspension pin 32. A bottom stopper 34 is sleeved on the bottom of the suspension pin 32 and abuts against the annular step 322. This reduces the diameter of the bottom stopper 34 and prevents interference with the relative movement between the suspension pin 32 and the suspension base 31.

[0156] Based on the above technical solution, the bottom wall of the suspension chamber 311 is provided with a first-order limiting protrusion 313 extending toward the opening. The limiting protrusion 313 can be cylindrical. Correspondingly, the end of the suspension pin 32 facing the interior of the suspension chamber 311 (the bottom end of the suspension pin 32) is provided with a first-order limiting hole 321 for accommodating the first-order limiting protrusion 313.

[0157] The first-stage limiting boss 313 is inserted into the first-stage limiting hole 321. During the vertical relative movement of the suspension base 31 and the suspension pin 32, the first-stage limiting boss 313 will not fall out of the first-stage limiting hole 321, and limits the suspension base 31 and the suspension pin 32 to only move vertically relative to each other.

[0158] As for the matching mode between the suspension base 31 and the wheelset, a series of axle box positioning pins 314 can be set at the bottom end of the suspension base 31, which can be inserted into the positioning hole at the top of the axle box to achieve vertical positioning and horizontal limitation, thereby avoiding relative horizontal movement between the series of suspension devices and the axle box.

[0159] As for the matching mode between the suspension pin 32 and the frame, a series of frame positioning pins 323 can be set at the top of the suspension pin 32, which can be inserted into the positioning hole of the frame to achieve vertical positioning and horizontal limitation to avoid relative horizontal movement between the series of suspension devices and the frame.

[0160] Based on the above technical solution, the bogie also includes a bottom cabin device, which is installed at the bottom of the bogie, which can protect the bogie, prevent stones and solid objects on the track surface from hitting the bogie, and prevent dirt such as mud from adhering to the bogie.

[0161] As shown in Figures 30 to 33, the bogie bottom tank device provided in this embodiment includes: a bottom tank frame 61 and a bottom tank skin 62 connected to the bottom tank frame 61. The bottom tank frame 61 is connected to the bogie frame, and the bottom tank skin 62 is connected to the bottom of the bottom tank frame 61.

[0162] The bottom tank frame includes a bottom tank longitudinal beam 611, a short bottom tank crossbeam 612, and a long bottom tank crossbeam 613. The two bottom tank longitudinal beams 611 are parallel and spaced apart. The long bottom tank crossbeam 613 connects the middle of the two bottom tank longitudinal beams 611, with the ends of the long bottom tank crossbeam 613 extending beyond the bottom tank longitudinal beams 611. The short bottom tank crossbeam 612 is located outside the long bottom tank crossbeam 613 and connects between the two bottom tank longitudinal beams 611.

[0163] The bottom hold skin comprises a main skin body 621 and side skin sections 622. The main skin body 621 extends longitudinally, overlying the bottom hold longitudinal beams 611 and short bottom hold transverse beams 612. The side skin sections 622 are located on either side of the longitudinal center of the main skin body 621 and overlying the ends of the long bottom hold transverse beams 613.

[0164] The size of the bottom tank skin is larger than the coverage area of ​​the bottom tank frame. The bottom tank frame plays the role of support and connection, and the bottom tank skin plays the role of blocking and protection.

[0165] The nacelle frame provides support and connection, while the nacelle skin acts as a barrier, preventing rocks and other solid objects on the rail surface from colliding with bogie components. This protects the bogie, extends component life, and enhances driving safety. Furthermore, nacelle side panels are provided on either side of the longitudinal center of the nacelle body. These panels protrude from the nacelle body, bringing them closer to the railcar's body skirts. This reduces the gap between the skirts and the nacelle skin, reduces chaotic airflow in this area, and thus reduces noise.

[0166] Based on the above technical solution, this embodiment provides a specific implementation of the bottom hold device:

[0167] There are two long bottom tank beams 613, arranged side by side and spaced apart. Each end of each long bottom tank beam 613 passes through the middle of its corresponding bottom tank longitudinal beam 611, extending outward from the bottom tank longitudinal beam 611. Specifically, the two ends of each long bottom tank beam 613 extend outward from the bottom tank longitudinal beam 611 by equal lengths.

[0168] The long transverse beam 613 of the bottom hold can be a trough beam or a square beam, and the longitudinal beam 611 of the bottom hold can be a trough beam. The openings of the two longitudinal beams 611 are arranged in opposite directions, and the long transverse beam 613 of the bottom hold passes through the bottom of the trough of the longitudinal beams 611 and is riveted to the side walls of the trough of the longitudinal beams 611.

[0169] There are two short bottom tank beams 612, located outside the two long bottom tank beams 613. These short bottom tank beams 612 can be channel beams or U-shaped beams. Their ends are inserted into the grooves of the bottom tank longitudinal beams 611 and riveted to the sidewalls of the grooves.

[0170] Furthermore, a bottom tank end beam 614 is used, connected to the ends of the two bottom tank longitudinal beams 611. The bottom tank end beam 614 can be a channel beam or a square beam. The ends of the bottom tank end beam 614 are inserted into the grooves of the bottom tank longitudinal beams 611 and riveted to the side walls of the grooves of the bottom tank longitudinal beams 611. The bottom tank end beam 614 is used to support the ends of the bottom tank skin 62.

[0171] The above-mentioned bottom hold long cross beam 613 , bottom hold short cross beam 612 and bottom hold end beam 614 are arranged at intervals, and the bottom hold short cross beam 612 is located in the middle of the bottom hold end beam 614 and the bottom hold long cross beam 613 .

[0172] The skin body 621 is covered on the bottom of the bottom cabin longitudinal beam 611, the bottom cabin long cross beam 613, the bottom cabin short cross beam 612 and the bottom cabin end beam 614. The length of the skin body 621 is greater than the length of the bottom cabin longitudinal beam 611, and the width of the skin body 621 is greater than the distance between the two bottom cabin longitudinal beams 611.

[0173] The bottom cabin skin 62 is made of aluminum, which has a relatively low mass and is conducive to reducing the weight of the vehicle body and realizing a lightweight design of the vehicle. In addition, the aluminum skin is relatively strong and has high reliability.

[0174] As shown in FIG34 and FIG35 , based on the above technical solution, this embodiment provides a bogie cabin, comprising the above-mentioned bottom cabin device 601 , side cabin device 602 , and guide device 603 , which covers the bogie.

[0175] The side compartments 602 are located on either side of the bogie and connected to the bottom of the rail vehicle body to protect the bogie from the side. The side compartments 602 can be shaped like the body skirts, eliminating the need for body skirts on the sides of the bogie; the side compartments 602 can simply serve as the body skirts.

[0176] Air guides 603 are installed at both ends of the bogie and connected to the bottom of the rail vehicle. A guide channel is formed between the guide 603 and the end of the bottom compartment 601. This allows air to flow into the bogie through the guide channel at one end and out through the other end, creating an orderly flow inside the bogie and facilitating heat dissipation.

[0177] The side of the guide device 603 facing the bottom tank device 601 is recessed inward, forming an arc-shaped notch. Correspondingly, the center of the bottom tank end beam 614 arches outward. The longitudinal end edges of the skin body 621 are curved, matching the arc-shaped notch of the guide device 603. This ensures a uniform diameter of the guide channel, resulting in smoother flow, effectively reducing turbulence and wind noise at the guide point.

[0178] Furthermore, a bottom tank diagonal beam 615 is connected between the ends of the bottom tank long transverse beam 613 and the bottom tank longitudinal beam 611, forming a triangular structure with the bottom tank long transverse beam 613 and the bottom tank longitudinal beam 611. This helps to improve the strength of both sides of the middle portion of the bottom tank frame 61. The bottom tank diagonal beam 615 can be a square beam or a channel beam, and is riveted to the bottom tank longitudinal beam 611 and the bottom tank long transverse beam 613 respectively by rivets.

[0179] The edges of the skin side portions 622 are curved and convex outward. The bottom cabin skin 62 also includes curved side baffles 623, vertically connected to the edges of the skin side portions 622. The curved edges of the skin side portions 622 reduce the gap between the side skirts or the side cabin assembly 602, thereby reducing wind resistance.

[0180] The aforementioned tank longitudinal beams 611, tank end cross beams 612, tank long cross beams 613, tank end beams 614, and tank diagonal beams 615 can all be constructed of extruded aluminum profiles, with weight-reducing holes machined into them. The tank skin 62 is connected to the tank frame 61 via a simple and reliable riveting process, further reducing weight.

[0181] Regarding the connection between the bottom tank device 601 and the bogie, this embodiment provides an implementation method: the bottom tank device 601 is connected to the bogie using a boom assembly 63. Specifically, the bottom end of the boom assembly 63 is connected to the end of the bottom tank long crossbeam 613, and the top end is connected to the bogie frame.

[0182] Specifically, as shown in Figure 36, the boom assembly 63 includes a boom body 631, the bottom end of which is fixed to the long cross beam 613 of the bottom cabin, and a first sealing gasket 632 is provided between the boom body 631 and the long cross beam 613 of the bottom cabin. The top end of the boom body 631 is connected to the frame, specifically, passing through the side beam 11 in the frame upward and then fixed to the boom connecting nut 633. The boom connecting nut 633 adopts a metal embedded self-locking nut, which can prevent loosening. A second sealing gasket 634 is provided between the top end of the boom body 631 and the frame, and a ring groove is provided on the circumference of the second sealing gasket 634, and the bottom plate of the side beam is embedded in the ring groove. The above-mentioned boom assembly 63 can significantly increase the hanging stiffness of the bottom cabin device 601, and the sealing gasket can reduce the relative movement and vibration between the bottom cabin device and the frame.

[0183] Furthermore, as shown in Figure 37, a wire rope vibration damper 64 is used, installed between the bottom tank unit 601 and the bogie, to reduce vibration between them. Specifically, the ends of the bottom tank end beam 614 extend outward from the bottom tank longitudinal beam 611. The wire rope vibration damper 64 is installed at the end of the bottom tank end beam, and its top is used to connect to the axle box of the bogie. Specifically, four wire rope vibration dampers 64 are used, respectively installed at the ends of two bottom tank end beams 614, connected between the four axle boxes and the bottom tank end beams 614, to reduce vibration impact on the axle boxes and the relative movement between the axle boxes and the bottom tank unit.

[0184] Specifically, as shown in Figure 38, the bottom plate of the wire rope vibration damper 64 is connected to the bottom cabin end beam 614 by bolts. The top plate of the wire rope vibration damper 64 is connected to the axle box 23 and the vertical vibration damper 71 in sequence by bolts.

[0185] Based on the above technical solution, the area enclosed by the long bottom tank beam 613 and the short bottom tank beam 612 forms an inspection zone, and the main skin body has inspection holes corresponding to the inspection zone. An inspection door 651 is located within the inspection zone. One side of the inspection door 651 is hingedly connected to the bottom tank beam 611 via a hinge 652, allowing the inspection door 651 to rotate relative to the bottom tank beam 611 via the hinge 652, opening downward or closing upward. The opposite side of the inspection door 651 is connected to the other bottom tank beam 611 via a locking member 653, which is used to lock the inspection door when closed. The locking member 653 can be a cam lock structure.

[0186] Furthermore, an anti-drop safety lock is provided in the middle of the short cross beam 612 of the bottom cabin, which is used to further lock the inspection door when it is closed to prevent the inspection door from accidentally falling off.

[0187] Furthermore, brake disc avoidance holes 625 are provided at the four corners of the skin body 621 to allow for clearance of the brake discs on the bogie axles. Specifically, the brake disc avoidance holes 625 are provided on one side of the area between the bottom cabin end cross beam 612 and the bottom cabin end beam 614, corresponding to the position of the brake discs.

[0188] Furthermore, brake pad replacement windows 624 are provided at the four corners of the skin body 621, through which the brake pads on the brake caliper can be disassembled and assembled, thereby achieving maintenance and replacement of the brake pads.

[0189] The bottom cabin device 601 is provided with two inspection doors 651, which can be opened to inspect and maintain the bogie from the bottom.

[0190] Based on the above technical solution, an air filter device is installed on the frame, which can be installed on the crossbeam 12 or the side beam 11. As shown in Figure 39, the air filter device includes a main water filter path 141, a first water filter branch path 142, a second water filter branch path 143, and a transmission mechanism. One end of the main water filter path 141 is connected to the additional air chamber 177, and the other end is connected to the first water filter branch path 142 and the second water filter branch path 143 respectively. The first water filter branch path 142 is equipped with a drive impeller 144, which is connected to the driving end of the transmission mechanism. The second water filter branch path 143 is equipped with a compression impeller 145, which is connected to the driven end of the transmission mechanism. The second water filter branch path 143 is connected to the additional air chamber 177 via an air filter 146.

[0191] The high-pressure gas in the additional air chamber 177 flows from the main water filtration path 141 into the first water filtration branch 142 and the second water filtration branch 143, respectively (as indicated by the single arrow in Figure 39 ). Under the power of the high-pressure gas entering the first water filtration branch 142, the drive impeller 144 rotates, driving the driving end of the transmission mechanism and the driven end, thereby driving the compression impeller 145 to rotate, further compressing the high-pressure gas entering the second water filtration branch 143 and increasing the gas pressure (as indicated by the double arrow in Figure 39 ). This pressurized gas passes through the air filter 146, which separates the water from the compressed gas. The dried compressed gas then returns to the additional air chamber 177.

[0192] The air water filter device can dry the gas in the additional air chamber to remove moisture in the additional air chamber, reduce the chance of corrosion of the box-type structure, thereby extending the service life of the frame, improving the reliability of the frame and the secondary suspension device, and ensuring driving safety.

[0193] Based on the above technical solution, the transmission mechanism can adopt a sprocket, gear, or other mechanism. In this embodiment, the transmission mechanism includes: a driving gear 1471 and a driven gear 1472 that mesh with each other. The driving gear 1471 is connected to the driving impeller 144 and rotates synchronously, while the driven gear 1472 is connected to the compression impeller 145 and rotates synchronously. The number of teeth on the driving gear 1471 is greater than that on the driven gear 1472. The rotation speed of the driven gear 1472 is greater than that of the driving gear 1471. The driven gear 1472 rotates faster, thereby driving the compression impeller 145 to rotate faster, further compressing and boosting the air.

[0194] Furthermore, a control assembly 148 is provided in the first water filtration branch 142 to control the activation of the first water filtration branch 142. The control assembly 148 may specifically include a controller, a relay, and a solenoid valve. The controller periodically controls the opening of the solenoid valve via the relay, allowing compressed air in the additional air chamber 177 to flow through the main water filtration path 141 and into the two water filtration branches for drying according to the above-described scheme. For example, the solenoid valve may be opened during periods of low temperature each day for drying.

[0195] Furthermore, a humidity sensor 149 is provided within the additional air chamber 177. The humidity sensor 149 is electrically connected to the control assembly 148. The humidity sensor 149 detects the humidity within the additional air chamber 177. When the humidity exceeds a preset value, the control assembly 148 controls the solenoid valve to open and dry the additional air chamber 177 according to the actual humidity.

[0196] Furthermore, a one-way gas valve 1410 is provided in the second water filter branch 143 , specifically between the air filter 146 and the additional air chamber, so that the compressed gas dried by the air filter 146 can only flow to the additional air chamber 177 .

[0197] Based on the above technical solutions, this embodiment further provides a rail vehicle, comprising a bogie provided in any of the above contents. The rail vehicle provided in this embodiment has the same technical effects as the above bogie.

Claims

1. A non-powered bogie, characterized in that: include: Framework; The frame comprises: a crossbeam, a side beam and a series of mounting seats; the two side beams are arranged in parallel, the crossbeam is connected between the middle parts of the two side beams; the series of mounting seats are arranged at the ends of the side beams; the side beams comprise: a side beam body and an empty spring mounting part, the empty spring mounting part is arranged outside the middle part of the side beam body; the crossbeam is provided with a central pin hole; Wheel set; the wheelset comprises: an axle and a wheel and an axle box arranged on the axle, wherein the axle box is located inside the wheel; A primary suspension device is arranged between the axle box and the primary mounting seat; The secondary suspension device is arranged at the air spring mounting portion; The bottom end of the traction device is inserted into the center pin hole of the crossbeam.

2. The non-powered bogie according to claim 1, characterized in that: The side beam body comprises: a side beam upper cover plate, a side beam lower cover plate, a side beam inner plate and a side beam outer plate, the side beam upper cover plate is connected to the top ends of the side beam inner plate and the side beam outer plate, the side beam lower cover plate is connected to the bottom ends of the side beam inner plate and the side beam outer plate; the inner side of the side beam upper cover plate exceeds the inner plate of the side beam as the side beam upper connection end, and the inner side of the side beam lower cover plate exceeds the inner plate of the side beam as the side beam lower connection end; The crossbeam comprises: a crossbeam upper cover plate, a crossbeam lower cover plate and a crossbeam outer vertical plate, wherein the crossbeam upper cover plate is connected to the top end of the crossbeam outer vertical plate, and the crossbeam lower cover plate is connected to the bottom end of the crossbeam outer vertical plate; the parts of the two ends of the crossbeam outer vertical plate that extend beyond the crossbeam upper cover plate serve as crossbeam connecting ends, which are inserted between the upper connecting end of the side beam and the lower connecting end of the side beam and are connected to the inner vertical plate of the side beam; the crossbeam upper cover plate is butt-connected to the upper connecting end of the side beam, and the crossbeam lower cover plate is butt-connected to the lower connecting end of the side beam.

3. The non-powered bogie according to claim 2, characterized in that: The crossbeam also includes: a crossbeam inner plate; the crossbeam inner plate surrounds a center pin hole; the crossbeam inner plate is located between two crossbeam outer plates, the crossbeam upper cover plate is connected between the tops of the crossbeam inner plate and the crossbeam outer plate, and the crossbeam lower cover plate is connected between the bottoms of the crossbeam inner plate and the crossbeam outer plate.

4. The non-powered bogie according to claim 2, characterized in that: The cross beam further comprises a cross beam end plate extending vertically and connected between the cross beam inner plate and the cross beam outer plate.

5. The non-powered bogie according to claim 2, characterized in that: The empty spring mounting portion is a box-shaped structure having a first additional chamber inside, and the side beam body is a box-shaped structure having a second additional chamber inside; the first additional chamber is communicated with the second additional chamber; An empty spring installation sleeve is provided in the empty spring installation portion; the internal space of the empty spring installation sleeve is used to communicate with the gas chamber inside the air spring, and the internal space of the empty spring installation sleeve is also communicated with the first additional chamber.

6. The non-powered bogie according to claim 5, characterized in that: The empty spring mounting portion includes: an empty spring mounting vertical plate; both ends of the empty spring mounting vertical plate are bent toward the side beam outer vertical plate relative to the middle of the empty spring mounting vertical plate and are connected to the side beam outer vertical plate; the side beam upper cover plate extends outward and is connected to the top end of the empty spring mounting vertical plate, and the side beam lower cover plate extends outward and is connected to the bottom end of the empty spring mounting vertical plate. The empty spring mounting vertical plate, the side beam upper cover plate, the side beam lower cover plate and the side beam outer vertical plate form a first additional chamber.

7. The non-powered bogie according to claim 1, characterized in that: One end of the primary mounting seat is provided with an upper clamp arm and a lower clamp arm, and a space for accommodating the end of the side beam is formed between the upper clamp arm and the lower clamp arm; the upper clamp arm and the lower clamp arm are respectively covered with the upper surface and the lower surface of the end of the side beam and are fixedly connected to the end of the side beam; the middle bottom surface of the primary mounting seat is provided with an interface for connecting with the primary suspension device of the bogie.

8. The non-powered bogie according to claim 7, characterized in that: The first-order mounting seat is also provided with an interface for connecting with a first-order vertical shock absorber.

9. The non-powered bogie according to claim 8, characterized in that: The middle bottom surface of the primary mounting seat is provided with two primary positioning holes arranged in sequence along the length direction of the side beam, which are used for corresponding assembly with the primary suspension device; A shock absorber connection hole is provided at the end of the first-series mounting seat away from the side beam, serving as an interface connected to the first-series vertical shock absorber; the shock absorber connection hole passes through the upper and lower surfaces of the first-series mounting seat.

10. The non-powered bogie according to claim 2, characterized in that: The empty spring installation portion is provided with an empty spring installation hole, and an elastic member is arranged in the empty spring installation hole; The secondary suspension device includes an air spring; an empty spring guide column is provided at the bottom of the air spring, which is inserted into the empty spring mounting hole and contacts the elastic part; when the external load applied to the air spring is a first load, the air spring falls on the top surface of the empty spring mounting part, and the empty spring guide column applies pressure to the elastic part to compress the elastic part; when the external load applied to the air spring is a second load, the rebound force of the elastic part pushes the air spring upward to leave an adjustment gap between the air spring and the empty spring mounting part; the first load is greater than the second load.

11. The non-powered bogie according to claim 10, characterized in that: The lower inner wall of the air spring installation sleeve is provided with a step surface, and the elastic member is arranged on the step surface.

12. The non-powered bogie according to claim 1, characterized in that: The traction device comprises a traction pin; the traction pin comprises: a pin main body, a vehicle body connecting part and a frame stopper, the vehicle body connecting part is located at one end of the pin main body, and the frame stopper is located at the other end of the pin main body; One end of the pin main body forks into two pin connecting arms, each of which is connected to a vehicle body connecting part; a hollow area is formed between the two pin connecting arms; the edge of the hollow area is a curved shape recessed toward the pin main body.

13. The non-powered bogie according to claim 12, characterized in that: The hollowed-out areas on both sides of the pin body are symmetrically arranged and can be used as wire-passing channels, so that the cable passes through the hollowed-out areas from one side of the traction pin to the other side of the traction pin.

14. The non-powered bogie according to claim 12, characterized in that: A wear plate installation groove for embedding the longitudinal wear plate is provided on the side surface of the frame stopper.

15. The non-powered bogie according to claim 1, characterized in that: The primary suspension device comprises: A suspension base; the suspension base is provided with an open suspension cavity, and a first magnetic member is provided on a side wall of the suspension cavity; The suspension pin can enter and exit the suspension cavity from the opening, and the suspension pin has the same magnetic pole as the first magnetic member.

16. The non-powered bogie according to claim 15, characterized in that: There are multiple first magnetic members, which are evenly arranged along the circumference of the suspension base.

17. The non-powered bogie according to claim 16, characterized in that: The suspension pin is in the shape of a truncated cone; the cross-sectional area of ​​the suspension cavity gradually decreases along the direction from the opening to the inside; and the cross-sectional area of ​​the suspension pin gradually decreases along the direction entering the suspension cavity.

18. The non-powered bogie according to claim 16, characterized in that: The circumferential surface of the suspension pin is provided with a side stop block, and the side stop blocks are arranged in a one-to-one correspondence with the first magnetic member; and / or, The first-stage suspension device further includes: a bottom stop block, which is arranged between the suspension pin and the bottom wall of the suspension cavity.

19. The non-powered bogie according to claim 18, characterized in that: A ring platform is arranged on the end edge of the suspension pin facing the inside of the suspension cavity, and a bottom stop block is sleeved on the end of the suspension pin and abuts against the ring platform.

20. The non-powered bogie according to claim 15, characterized in that: The bottom wall of the suspension cavity is provided with a series of limiting convex columns extending toward the opening; The end of the suspension pin facing the inside of the suspension cavity is provided with a set of limiting holes for accommodating a set of limiting protrusions.

21. The non-powered bogie according to claim 1, characterized in that: Also includes: Bogie bottom tank installation; The bogie bottom cabin device comprises: a bottom cabin frame and a bottom cabin skin connected to the bottom cabin frame; The bottom tank frame comprises: a bottom tank longitudinal beam, a short bottom tank cross beam, a long bottom tank cross beam and a bottom tank end beam; the two bottom tank longitudinal beams are parallel and spaced apart; the long bottom tank cross beam is connected to the middle of the two bottom tank longitudinal beams, and the end of the long bottom tank cross beam exceeds the bottom tank longitudinal beam; the short bottom tank cross beam is located outside the long bottom tank cross beam and connected between the two bottom tank longitudinal beams; the bottom tank end beam is connected to the ends of the two bottom tank longitudinal beams; The bottom cabin skin includes: a skin body and a skin side; the skin body extends longitudinally and covers the bottom cabin longitudinal beams and the bottom cabin short beams; the skin side is located on both sides of the longitudinal middle of the skin body and covers the ends of the bottom cabin long beams.

22. The non-powered bogie according to claim 21, characterized in that: The bottom tank frame also includes: a bottom tank diagonal beam connected between the end of the bottom tank long cross beam and the bottom tank longitudinal beam; The edge of the side portion of the skin is an arc-shaped arc that bulges outwards; The bottom cabin skin also includes: a skin side baffle; the skin side baffle is in an arc shape and is vertically connected to the edge of the skin side.

23. The non-powered bogie according to claim 21, characterized in that: The bogie bottom cabin device also includes: a wire rope vibration damper; both ends of the bottom cabin end beam pass outwardly through the bottom cabin longitudinal beam, the wire rope vibration damper is arranged at the end of the bottom cabin end beam, and its top is used to be connected to the axle box of the bogie.

24. The non-powered bogie according to claim 1, characterized in that: Also includes: Air water filtration device; The air water filtration device includes: a water filtration main circuit, a first water filtration branch circuit, a second water filtration branch circuit and a transmission mechanism; one end of the water filtration main circuit is connected to an additional air chamber inside the side beam, and the other end is respectively connected to the first water filtration branch circuit and the second water filtration branch circuit; the first water filtration branch circuit is provided with a driving wind wheel, which is connected to the driving end in the transmission mechanism; the second water filtration branch circuit is provided with a compression wind wheel, which is connected to the driven end in the transmission mechanism; the second water filtration branch circuit is connected to the additional air chamber via an air water filter.

25. The non-powered bogie according to claim 24, characterized in that: The transmission mechanism comprises: a driving gear and a driven gear meshing with each other, wherein the driving gear is connected to the driving wind wheel and rotates synchronously, and the driven gear is connected to the compression wind wheel and rotates synchronously; the number of teeth of the driving gear is greater than that of the driven gear.

26. A rail vehicle, characterized in that: include: A bogie as claimed in any one of claims 1 to 25.

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