Rail vehicle underframe assembly and rail vehicle

Abstract

The application provides a rail vehicle underframe assembly and a rail vehicle, and belongs to the technical field of rail vehicles, and comprises two side beams and two groups of sleeper beams, the two groups of sleeper beams are located between the two side beams and are distributed along the front-rear direction of the vehicle body; each group of sleeper beams comprises a plurality of webs distributed along the front-rear direction of the vehicle body and a plurality of vertical plates distributed along the left-right direction of the vehicle body; each web extends along the left-right direction of the vehicle body, and the two ends of each web extend to the inner side surfaces of the two side beams, respectively; each vertical plate extends along the front-rear direction of the vehicle body, and each vertical plate is arranged between the plurality of webs. The longitudinal compression force, the longitudinal tensile force and the traction force of the bogie can be distributed to the plurality of webs through the plurality of vertical plates, and the longitudinal load can be decomposed and transmitted to the two side beams through the plurality of webs, so that the load bearing, impact resistance and fatigue resistance of the underframe assembly are improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of rail vehicles, and more particularly relates to a rail vehicle underframe assembly and a rail vehicle. BACKGROUND

[0002] When the rail vehicle is running, the underframe assembly bears the longitudinal dynamic load, static load and impact load of the vehicle body, and therefore the underframe assembly needs to meet the performance requirements of high strength, load resistance, impact resistance and fatigue resistance. The key factor restricting these performance indicators is the sleeper beam structure in the underframe assembly and the connection mode of the side beam and the sleeper beam.

[0003] In the prior art, the sleeper beam is connected with the side beam by two groups of webs, and the longitudinal load is not sufficiently decomposed to the side beam, which cannot meet the load bearing requirement of the vehicle longitudinal compression and stretching high load, resulting in poor load resistance, impact resistance and fatigue resistance of the underframe assembly. SUMMARY

[0004] The present application aims to provide a rail vehicle underframe assembly and a rail vehicle, and aims to solve the technical problem of poor load resistance, impact resistance and fatigue resistance of the underframe assembly caused by insufficient decomposition of the longitudinal load of the underframe assembly in the prior art.

[0005] In a first aspect, the present application provides a rail vehicle underframe assembly, comprising:

[0006] two side beams, which are spaced apart along the left-right direction of the vehicle body; each side beam extends along the front-rear direction of the vehicle body; and

[0007] two groups of sleeper beams, which are located between the two side beams and are spaced apart along the front-rear direction of the vehicle body; each group of sleeper beams comprises a plurality of webs spaced apart along the front-rear direction of the vehicle body and a plurality of vertical plates spaced apart along the left-right direction of the vehicle body; each web extends along the left-right direction of the vehicle body, and the two ends of each web extend to the inner side of the two side beams, respectively; and each vertical plate extends along the front-rear direction of the vehicle body, and each vertical plate is arranged between the plurality of webs.

[0008] The rail vehicle underframe assembly shown in the present application, compared with the prior art, the sleeper beam comprises a plurality of webs and a plurality of vertical plates, each vertical plate is arranged between the plurality of webs, the longitudinal compression force, the tensile force and the bogie traction force can be graded and shunted to the plurality of webs through the plurality of vertical plates, and the longitudinal load can be decomposed and transmitted to the two side beams through the plurality of webs to meet the load bearing requirement of the vehicle longitudinal compression and stretching high load, thereby improving the load resistance, impact resistance and fatigue resistance of the underframe assembly.

[0009] With reference to the first aspect, in a possible implementation manner, each group of the pillow beams further comprises an upper cover plate fixedly arranged at top ends of the plurality of webs and top ends of the plurality of vertical plates, and a lower cover plate fixedly arranged at bottom ends of the plurality of webs and bottom ends of the plurality of vertical plates.

[0010] In the vehicle body left-right direction, two ends of each of the webs respectively extend out of the upper cover plate and the lower cover plate.

[0011] In some embodiments, top ends of at least one group of the vertical plates are provided with two groups of symmetrically arranged first bevel edges.

[0012] The upper cover plate is provided with a first welding portion extending downward, and bottom ends of the first welding portion are provided with two groups of symmetrically arranged second bevel edges, which correspond to the two groups of first bevel edges one by one and are fixedly welded.

[0013] In some embodiments, each group of the pillow beams further comprises two groups of upper connecting transition plates and two groups of lower connecting transition plates.

[0014] The two groups of upper connecting transition plates are respectively arranged at top ends of the two end extending portions of the plurality of webs, and the two groups of lower connecting transition plates are respectively arranged at bottom ends of the two end extending portions of the plurality of webs.

[0015] In the vehicle body left-right direction, an outer side edge of the upper connecting transition plate is connected to an inner side edge of the top end of the side beam, and an outer side edge of the lower connecting transition plate is connected to an inner side edge of the bottom end of the side beam.

[0016] In some embodiments, among the plurality of vertical plates, two vertical plates defined on the left and right sides are end plates, and outer side edges of the end plates respectively extend to outer sides of the upper cover plate and the lower cover plate. The upper connecting transition plate further abuts against an extended portion of an upper end surface of the end plate, and the lower connecting transition plate further abuts against an extended portion of a lower end surface of the end plate.

[0017] With reference to the first aspect, in a possible implementation manner, the rail vehicle chassis assembly further comprises a plurality of cross beams distributed along the vehicle body front-rear direction; each of the cross beams is arranged to extend along the vehicle body left-right direction.

[0018] In the vehicle body up-down direction, an upper surface of the cross beam is located below an upper surface of the side beam; in the vehicle body left-right direction, an upper end of an outer side edge of the cross beam is connected to an upper end of an inner side edge of the side beam through a transition wing plate.

[0019] In the vehicle body up-down direction, a lower surface of the cross beam is flush with a lower surface of the side beam; in the vehicle body left-right direction, a lower end of the outer side edge of the cross beam is connected to a lower end of the inner side edge of the side beam.

[0020] In a second aspect, the embodiments of the present application further provide a rail vehicle, comprising:

[0021] The rail vehicle chassis assembly described above;

[0022] Two groups of side walls are arranged in the left-right direction of the vehicle body and are respectively fixed to the left and right sides of the rail vehicle chassis assembly; each group of side walls is provided with a door assembly; the top ends of the two groups of side walls are respectively provided with a second connecting part;

[0023] Two groups of end walls are arranged in the front-rear direction of the vehicle body and are respectively fixed to the front and rear sides of the rail vehicle chassis assembly and the two groups of side walls; and

[0024] A roof structure is fixedly arranged at the top ends of the two groups of side walls and the two groups of end walls; in the left-right direction of the vehicle body, the two side edges of the roof structure are respectively provided with a first connecting part;

[0025] The first connecting part and the second connecting part are respectively arranged in the front-rear direction of the vehicle body and are welded together.

[0026] Compared with the prior art, the rail vehicle shown in the embodiments of the present application can enhance the longitudinal bearing capacity of the whole vehicle and improve the bearing resistance, impact resistance and fatigue resistance of the whole vehicle due to the adoption of the rail vehicle chassis assembly described above.

[0027] In combination with the second aspect, in a possible implementation manner, the first connecting part comprises a first inner side vertical plate, a first horizontal plate and a first outer side vertical plate connected in sequence in the left-right direction of the vehicle body; the first inner side vertical plate, the first horizontal plate and the first outer side vertical plate form a groove structure with an opening facing downward;

[0028] The second connecting part comprises a second inner side vertical plate, a second horizontal plate and a second outer side vertical plate connected in sequence in the left-right direction of the vehicle body; the inner side edge of the second horizontal plate is connected with the lower end edge of the second inner side vertical plate, and the outer side edge of the second horizontal plate is connected with the upper end edge of the second outer side vertical plate;

[0029] The first inner side vertical plate and the second inner side vertical plate are welded together, and the first outer side vertical plate and the second outer side vertical plate are welded together.

[0030] In combination with the second aspect, in a possible implementation manner, the inner side surface of the first connecting part is provided with an upper connecting plate corresponding to the upper side of the door assembly, and the upper connecting plate is connected with the top surface of the door assembly;

[0031] The top end of the door assembly is provided with a reinforcing plate extending upward, the top end of the reinforcing plate is inwardly inclined and bent, and the top end of the reinforcing plate is connected with the inner side surface of the roof structure.

[0032] With reference to the second aspect, in a possible implementation manner, the side wall comprises a side wall outer plate and a side wall framework supported inside the side wall outer plate.

[0033] The side door frame of the vehicle door assembly is provided with an adjusting beam between the side wall framework, and the adjusting beam is used to define the fixed position of the side door frame; the outer side surface of the side door frame is further provided with a compensation plate, the outer plate surface of the compensation plate is flush with the outer plate surface of the side wall outer plate, and one side edge of the compensation plate is connected with one side edge of the side wall outer plate. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0035] Figure 1 An exploded structural schematic diagram of the rail vehicle underframe assembly provided by the embodiment of the present application;

[0036] Figure 2 A structure schematic diagram of the bolster of the rail vehicle underframe assembly provided by the embodiment of the present application Figure 1 ;

[0037] Figure 3 A structure schematic diagram of the bolster of the rail vehicle underframe assembly provided by the embodiment of the present application Figure 2 (not shown in the figure);

[0038] Figure 4 A structure schematic diagram of the bolster of the rail vehicle underframe assembly provided by the embodiment of the present application Figure 2 ;

[0039] Figure 5 A structure schematic diagram of the upper cover plate of the rail vehicle underframe assembly provided by the embodiment of the present application and one set of vertical plates

[0040] Figure 6 A structure schematic diagram of the rail vehicle underframe assembly provided by the embodiment of the present application Figure 1 ;

[0041] Figure 7 A structure schematic diagram of the rail vehicle underframe assembly provided by the embodiment of the present application Figure 6 ;

[0042] Figure 8 A structure schematic diagram of the rail vehicle underframe assembly provided by the embodiment of the present application Figure 1 ;

[0043] Figure 9A schematic cross-sectional view of the rail vehicle underframe assembly provided in an embodiment of the present invention. Figure 2 ;

[0044] Figure 10 for Figure 9 Enlarged structural diagram of point C in the middle circle;

[0045] Figure 11 This is a schematic diagram of the exploded structure of a rail vehicle provided in an embodiment of the present invention;

[0046] Figure 12 This is a schematic diagram of the connection structure of the side wall, roof, and underframe assembly of a rail vehicle provided in an embodiment of the present invention;

[0047] Figure 13 for Figure 12 Enlarged structural diagram of point D in the middle circle;

[0048] Figure 14 A schematic diagram of the cross-sectional connection structure between the side wall and the roof of a rail vehicle provided in an embodiment of the present invention;

[0049] Figure 15 for Figure 14 A schematic diagram of the exploded structure;

[0050] Figure 16 A schematic diagram of the connection position between the door assembly and the side wall frame of a rail vehicle provided in an embodiment of the present invention;

[0051] Figure 17 for Figure 16 A schematic diagram of the cross-sectional structure along the EE line.

[0052] Figure 18 for Figure 17 A schematic diagram of the exploded structure;

[0053] Figure 19 for Figure 16 A schematic diagram of the cross-sectional structure along the FF line.

[0054] In the picture:

[0055] 1. Edge beam;

[0056] 2. Pillar beam; 21. Web plate; 22. Vertical plate; 221. First bevel edge; 23. Upper cover plate; 231. First welded part; 232. Second bevel edge; 24. Lower cover plate; 25. Upper connecting transition plate; 26. Lower connecting transition plate; 27. End plate;

[0057] 3. Crossbeam; 31. Transition flange;

[0058] 4, roof structure; 41, first connecting part; 411, first inner vertical plate; 412, first horizontal plate; 413, first outer vertical plate; 42, upper connecting plate;

[0059] 5, side wall; 51, second connecting part; 511, second inner vertical plate; 512, second horizontal plate; 513, second outer vertical plate; 52, rain eave; 53, side wall outer plate; 54, side wall framework; 55, adjusting beam; 551, first beam body; 552, second beam body;

[0060] 6, door assembly; 61, reinforcing plate; 62, side door frame; 63, compensation plate;

[0061] 7, end wall;

[0062] 8, corrugated plate. DETAILED DESCRIPTION

[0063] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0064] It should be noted that in the present embodiment, the terms "front", "rear", "inner", "outer", "upper", "lower" and the like indicate the orientation or positional relationship based on the orientation of the rail vehicle itself, wherein the head of the rail vehicle represents "front", the tail of the rail vehicle represents "rear", the top of the rail vehicle represents "upper", the bottom of the rail vehicle represents "lower", the "inner" side refers to the side towards the inside of the car, and the "outer" side refers to the side towards the outside of the car.

[0065] In addition, the front-rear direction of the vehicle body defined in the embodiments of the present application refers to the front-rear direction of the advancing direction during the driving of the rail vehicle, the left-right direction of the vehicle body defined refers to the left-right direction of the advancing direction during the driving of the rail vehicle, and the up-down direction of the vehicle body defined refers to the up-down direction of the advancing direction during the driving of the rail vehicle.

[0066] Please refer to Figures 1 to 3The rail vehicle underframe assembly provided by the present application will be described. The rail vehicle underframe assembly comprises two side beams 1 and two groups of bolster beams 2. The two side beams 1 are distributed along the left-right direction of the vehicle body; each side beam 1 extends along the front-rear direction of the vehicle body; the two groups of bolster beams 2 are located between the two side beams 1 and are distributed along the front-rear direction of the vehicle body; each group of bolster beams 2 comprises a plurality of webs 21 distributed along the front-rear direction of the vehicle body and a plurality of vertical plates 22 distributed along the left-right direction of the vehicle body; each web 21 extends along the left-right direction of the vehicle body, and the two ends of each web 21 extend to the inner side of the two side beams 1, respectively; and each vertical plate 22 extends along the front-rear direction of the vehicle body and is arranged between the plurality of webs 21.

[0067] The two side beams 1 and the two groups of bolster beams 2 can form a rectangular frame structure, and the two groups of bolster beams 2 are generally located at the two ends of the side beams 1.

[0068] Each vertical plate 22 extends along the front-rear direction of the vehicle body and is arranged between the plurality of webs 21, each vertical plate 22 can form a longitudinal force transmission structure, and the plurality of vertical plates 22 can form a plurality of levels of longitudinal force transmission channels, so that the longitudinal force can be decomposed and transmitted to the plurality of webs 21 through the plurality of vertical plates 22.

[0069] The two ends of the plurality of webs 21 are connected to the two side beams 1, respectively, and the plurality of webs 21 can form a plurality of levels of transverse force transmission channels, so that the force can be decomposed to the two side beams 1 through the plurality of webs 21.

[0070] Compared with the prior art, the rail vehicle underframe assembly provided by the present application comprises the plurality of webs 21 and the plurality of vertical plates 22 in the bolster beams 2, each vertical plate 22 is arranged between the plurality of webs 21, the longitudinal compression force, the longitudinal tensile force and the traction force of the bogie can be decomposed and shunted to the plurality of webs 21 through the plurality of vertical plates 22, and the longitudinal load can be decomposed and transmitted to the two side beams 1 through the plurality of webs 21, so as to meet the load bearing requirement of the vehicle in the longitudinal compression and tensile high load, thereby improving the performance of the underframe assembly in resisting load bearing, impact and fatigue.

[0071] It should be noted that the longitudinal direction refers to the front-rear direction of the vehicle body, and the longitudinal compression force and the longitudinal tensile force can be understood as the compression force and the tensile force along the front-rear direction of the vehicle body. The transverse direction refers to the left-right direction of the vehicle body.

[0072] In some embodiments, the above-mentioned bolster beams 2 can also adopt the structures shown in Figure 2 and Figure 3 , and the structures are shown in Figure 2 and Figure 3Each group of the bolster 2 further comprises an upper cover plate 23 fixedly arranged at the top ends of the plurality of webs 21 and the plurality of vertical plates 22, and a lower cover plate 24 fixedly arranged at the bottom ends of the plurality of webs 21 and the plurality of vertical plates 22; in the vehicle body left-right direction, the two ends of each web 21 respectively extend out of the upper cover plate 23 and the lower cover plate 24.

[0073] The upper cover plate 23 and the lower cover plate 24 are used to seal the plurality of webs 21 and the plurality of vertical plates 22, so that the bolster 2 itself can enclose a cavity, the cavity can absorb vibration and noise, thereby improving the stability performance of the chassis assembly.

[0074] The two ends of the plurality of webs 21 respectively extend out of the upper cover plate 23 and the lower cover plate 24, so that the upper cover plate 23 and the lower cover plate 24 do not interfere with the connection of the web 21 and the side beam 1.

[0075] It should be noted that the upper cover plate 23 is also connected with the corrugated plate 8 by electric rivet welding, the longitudinal tensile and compressive load of the bolster can be decomposed and transmitted to the corrugated plate 8 through the upper cover plate 23, the corrugated plate 8 is arranged in the vehicle body front-rear direction, and the continuity of the longitudinal stress of the vehicle is ensured.

[0076] Preferably, referring to Figure 4 and Figure 5 On the basis of the above-mentioned embodiments, the top end of at least one group of the vertical plates 22 is provided with two groups of first beveled edges 221 arranged symmetrically; the upper cover plate 23 is provided with a first welding portion 231 extending downward, the bottom end of the first welding portion 231 is provided with two groups of second beveled edges 232 arranged symmetrically, and the two groups of second beveled edges 232 correspond to the two groups of first beveled edges 221 one by one and are fixedly welded.

[0077] It should be noted that among the plurality of groups of vertical plates 22, the main load-bearing vertical plate 22 is connected with the upper cover plate 23 by a beveled weld, and the secondary load-bearing vertical plate 22 is connected with the upper cover plate 23 by a fillet weld in a hole. The plurality of vertical plates 22 are connected with the lower cover plate 24 by a fillet weld.

[0078] For the connection mode of the beveled weld, since the top end of the vertical plate 22 is provided with two groups of first beveled edges 221, the bottom end of the first welding portion 231 is provided with two groups of second beveled edges 232, and the two groups of first beveled edges 221 and the two groups of second beveled edges 232 are opposite to each other, a “W”-shaped weld structure can be formed, the “W”-shaped weld structure can improve the stability performance of the vertical plate 22 and the upper cover plate 23 support, and avoid tensile stress in the thickness direction of the vertical plate 22, avoid delayed cold cracking or lamellar tearing caused by welding in low temperature environment, existence of restraint stress, excessive inclusions in the plate, and reduce the hydrogen removal operation, process operation, post-weld heat treatment stress removal and hammering to remove welding stress operation in the production operation process, thereby improving the product quality and reducing the overall manufacturing cost.

[0079] In some embodiments, the pillow beam 2 described above can also adopt the structure as shown in Figure 6 , Figure 7 and Figure 8 , see Figure 6 , Figure 7 and Figure 8 , each group of pillow beams 2 further comprises two groups of upper connecting transition plates 25 and two groups of lower connecting transition plates 26; the two groups of upper connecting transition plates 25 are respectively arranged at the top ends of the two end extending parts of the plurality of webs 21; the two groups of lower connecting transition plates 26 are respectively arranged at the bottom ends of the two end extending parts of the plurality of webs 21.

[0080] Among them, in the left-right direction of the vehicle body, the outer side edge of the upper connecting transition plate 25 is connected with the top end inner edge of the side beam 1, and the inner side edge of the upper connecting transition plate 25 is connected with the outer side edge of the upper cover plate 23; the outer side edge of the lower connecting transition plate 26 is connected with the bottom end inner edge of the side beam 1, and the inner side edge of the lower connecting transition plate 26 is connected with the outer side edge of the lower cover plate 24.

[0081] The upper connecting transition plate 25 is used for transition compensation connection of the side beam 1 and the plurality of webs 21, and the lower connecting transition plate 26 is used for transition compensation connection of the side beam 1 and the plurality of webs 21. It should be noted that the upper connecting transition plate 25 and the lower connecting transition plate 26 can be designed according to the assembly position and shape of the plurality of webs 21 and the side beam 1, and the upper connecting transition plate 25 and the lower connecting transition plate 26 are used to connect the side beam 1 and the plurality of webs 21, which can realize quick and high-quality welding assembly between the pillow beam 2 and the side beam 1, reduce welding grinding work, and improve production efficiency.

[0082] In addition, since the inner side edge of the upper connecting transition plate 25 is also connected with the outer side edge of the upper cover plate 23, and the inner side edge of the lower connecting transition plate 26 is also connected with the outer side edge of the lower cover plate 24, the welding stability of the upper connecting transition plate 25 can be improved by means of the upper cover plate 23, and the welding stability of the lower connecting transition plate 26 can be improved by means of the lower cover plate 24.

[0083] In some embodiments, the pillow beam 2 described above can also adopt the structure as shown in Figure 2 , Figure 3 and Figure 7 , see Figure 2 , Figure 3 and Figure 7 , among the plurality of vertical plates 22, the two vertical plates 22 defined on the left and right sides are end plates 27, and the outer side edges of the end plates 27 respectively extend to the outer sides of the upper cover plate 23 and the lower cover plate 24; the upper connecting transition plate 25 also abuts against the extended part of the upper end face of the end plate 27, and the lower connecting transition plate 26 also abuts against the extended part of the lower end face of the end plate 27.

[0084] It should be noted that the end plate 27 is a f-shaped bent plate structure, so that the two end plates 27 and the upper cover plate 23 and the lower cover plate 24 can form a cavity structure. The cavity structure can absorb vibration and noise, thereby improving the stability of the chassis assembly.

[0085] The outer side edges of the end plate 27 extend to the outer sides of the upper cover plate 23 and the lower cover plate 24, respectively. The upper plate surface of the end plate 27 can also support the upper connecting transition plate 25, and the lower plate surface of the end plate 27 can also support the lower connecting transition plate 26, thereby facilitating the welding operation of the upper connecting transition plate 25 and the upper cover plate 23 and the lower connecting transition plate 26 and the lower cover plate 24.

[0086] In some embodiments, the above rail vehicle chassis assembly can also adopt the structure as shown in Figure 1 、 Figure 9 and Figure 10 , see Figure 1 、 Figure 9 and Figure 10 , the rail vehicle chassis assembly further comprises a plurality of crossbeams 3 distributed along the front-rear direction of the vehicle body; each crossbeam 3 extends along the left-right direction of the vehicle body; in the up-down direction of the vehicle body, the upper surface of the crossbeam 3 is below the upper surface of the side beam 1, and the lower surface of the crossbeam 3 is flush with the lower surface of the side beam 1; in the left-right direction of the vehicle body, the upper end of the outer side edge of the crossbeam 3 is connected to the upper end of the inner side edge of the side beam 1 through a transition wing plate 31, and the lower end of the outer side edge of the crossbeam 3 is connected to the lower end of the inner side edge of the side beam 1.

[0087] It should be noted that the number of crossbeams 3 is large, and the spacing between two crossbeams 3 is small. The plurality of crossbeams 3 are mainly used to bear the lateral force of the chassis assembly.

[0088] Specifically, the lower end of the outer side edge of the crossbeam 3 is connected to the lower end of the inner side edge of the side beam 1 at the same cross section, which can improve the overall stiffness and load capacity of the side beam 1; the upper end of the outer side edge of the crossbeam 3 is connected to the upper end of the inner side edge of the side beam 1 through the transition wing plate 31, which can reduce the stress concentration of the connection between the crossbeam 3 and the side beam 1, and improve the force flow decomposition and transmission between the crossbeam 3 and the side beam 1. There is no gap or sudden change between the crossbeam 3 and the side beam 1, which improves the overall stiffness and modal performance of the vehicle body.

[0089] In addition, the plurality of crossbeams 3 are also electrically riveted and welded to the corrugated plate 8.

[0090] Please refer to Figure 11 and Figure 12Based on the same inventive concept, the application further provides a rail vehicle comprising the rail vehicle chassis assembly, two groups of side walls 5, two groups of end walls 7 and the roof structure 4; the two groups of side walls 5 are arranged in the left-right direction of the vehicle body and are fixed to the left and right sides of the rail vehicle chassis assembly respectively; each group of side walls 5 is provided with a door assembly 6; the two groups of end walls 7 are arranged in the front-back direction of the vehicle body and are fixed to the front and back sides of the rail vehicle chassis assembly and the two groups of side walls 5 respectively; and the roof structure 4 is fixed to the top ends of the two groups of side walls 5 and the two groups of end walls 7.

[0091] It should be noted that the two groups of side walls 5, the two groups of end walls 7 and the roof structure 4 are connected by welding. The two groups of side walls 5, the two groups of end walls 7 and the roof structure 4 form a vehicle body assembly. During the assembly of the vehicle body assembly, three groups of adjusting lead screws are arranged inside the vehicle body assembly, namely a height adjusting support lead screw, a width adjusting support lead screw and an oblique adjusting support lead screw. The three groups of adjusting lead screws adjust the height, width and diagonal of the vehicle body assembly, and then the welding operation is completed. After the welding of the vehicle body assembly is completed, the vehicle body assembly is assembled with the chassis assembly.

[0092] Compared with the prior art, the rail vehicle provided by the application can enhance the longitudinal bearing capacity of the whole vehicle and improve the bearing resistance, impact resistance and fatigue resistance of the whole vehicle due to the adoption of the rail vehicle chassis assembly.

[0093] In some embodiments, the first connecting part 41 and the second connecting part 51 can be arranged as shown in the following figure. Figure 13 , see Figure 13 In the left-right direction of the vehicle body, the two side edges of the roof structure 4 are respectively provided with first connecting parts 41, and the top ends of the two side walls 5 are respectively provided with second connecting parts 51. The first connecting parts 41 and the second connecting parts 51 extend in the front-back direction of the vehicle body and are welded together.

[0094] It should be noted that the front and back ends of the first connecting part 41 are respectively aligned with the front and back ends of the roof structure 4, and the front and back ends of the second connecting part 51 are respectively aligned with the front and back ends of the side wall 5. The roof structure 4 and the side wall 5 are connected by welding the first connecting part 41 and the second connecting part 51.

[0095] The first connecting part 41 is arranged on the roof structure 4, and the second connecting part 51 is arranged on the side wall 5. The first connecting part 41 and the second connecting part 51 can realize the rapid assembly of the vehicle body assembly and improve the production efficiency. In addition, the first connecting part 41 and the second connecting part 51 are welded together. By adjusting the fitting position of the first connecting part 41 and the second connecting part 51, the gap between the roof structure 4 and the side wall 5 can be adjusted, so that the roof structure 4 and the side wall 5 meet the assembly requirements, the size of the vehicle body assembly is ensured, and the removal and grinding operation of the vehicle body assembly assembly is reduced.

[0096] In addition, a rain eaves 52 are provided at the junction of the roof structure 4 and the side wall 5.

[0097] In some embodiments, the first connecting portion 41 and the second connecting portion 51 may adopt the following... Figure 14 and Figure 15 The structure shown is described in the following document. Figure 14 and Figure 15 The first connecting part 41 includes a first inner vertical plate 411, a first horizontal plate 412, and a first outer vertical plate 413 connected sequentially along the left-right direction of the vehicle body; the first inner vertical plate 411, the first horizontal plate 412, and the first outer vertical plate 413 are arranged to form a groove structure with the opening facing downward; the second connecting part 51 includes a second inner vertical plate 511, a second horizontal plate 512, and a second outer vertical plate 513 connected sequentially along the left-right direction of the vehicle body; the inner edge of the second horizontal plate 512 is connected to the lower edge of the second inner vertical plate 511, and the outer edge of the second horizontal plate 512 is connected to the upper edge of the second outer vertical plate 513; wherein, the first inner vertical plate 411 is welded to the second inner vertical plate 511, and the first outer vertical plate 413 is welded to the second outer vertical plate 513.

[0098] The first inner vertical plate 411, the first horizontal plate 412, and the first outer vertical plate 413 are arranged to form a downward-facing groove structure. This can also be understood as the inner and outer edges of the first horizontal plate 412 connecting to the upper edges of the first inner vertical plate 411 and the first outer vertical plate 413, respectively. The height of the first outer vertical plate 413 is greater than the height of the first inner vertical plate 411 to facilitate welding between the first outer vertical plate 413 and the second outer vertical plate 513.

[0099] The second connecting part 51 is a U-shaped plate structure. After the first connecting part 41 and the second connecting part 51 are fastened together, they can form a rectangular cavity. The rectangular cavity can also absorb vibration noise and deformation at the connection between the roof structure 4 and the side wall 5.

[0100] Specifically, the inner surface of the first inner vertical plate 411 is welded to the outer surface of the second inner vertical plate 511, and the inner surface of the first outer vertical plate 413 is welded to the outer surface of the second outer vertical plate 513. By adjusting the positions of the first inner vertical plate 411 and the second inner vertical plate 511, and the first outer vertical plate 413 and the second outer vertical plate 513, the assembly position of the roof structure 4 and the side wall 5 can be adjusted, thereby improving the overall vehicle form and position tolerances after assembly.

[0101] In some embodiments, the roof structure 4 and the door assembly 6 may be connected by, for example, Figure 16 , Figure 17 and Figure 18 The structure shown is described in the following document. Figure 16 , Figure 17 and Figure 18The inner side of the first connecting part 41 is provided with an upper connecting plate 42 above the door assembly 6, and the upper connecting plate 42 is connected to the top surface of the door assembly 6; the top of the door assembly 6 is provided with an upwardly extending reinforcing plate 61, the top of the reinforcing plate 61 is bent inward and connected to the inner side of the roof structure 4.

[0102] An upper connecting plate 42 is added to the inner side of the first connecting part 41 for connecting with the door assembly 6, so as to enhance the connection between the door assembly 6 and the roof structure 4, increase the force transmission path, and avoid stress concentration.

[0103] In addition, a reinforcing plate 61 is provided on the door assembly 6. The upper end of the reinforcing plate 61 is welded to the inner side of the roof structure 4 to further enhance the connection strength between the door assembly 6 and the roof structure 4, and to avoid the strength reduction caused by the door frame gap and structural change of the door assembly 6.

[0104] In some embodiments, the door assembly 6 and the side wall 5 may also be connected by, for example, Figure 16 and Figure 9 The structure shown is described in the following document. Figure 16 and Figure 19 The side wall 5 includes an outer side wall panel 53 and a side wall frame 54 supported on the inner side of the outer side wall panel 53.

[0105] An adjusting beam 55 is provided between the side door frame 62 of the door assembly 6 and the side wall frame 54. The adjusting beam 55 is used to limit the fixed position of the side door frame 62. A compensation plate 63 is also provided on the outer side of the side door frame 62. The outer side surface of the compensation plate 63 is flush with the outer side surface of the side wall outer plate 53, and one side edge of the compensation plate 63 is connected to one side edge of the side wall outer plate 53.

[0106] Specifically, the adjustment beam 55 includes a first beam 551 and a second beam 552 spaced apart along the front-rear direction of the vehicle body. Both the first beam 551 and the second beam 552 extend along the vertical direction of the vehicle body. One side edge of the first beam 551 is connected to the side edge of the rear door frame 62, and the second beam 552 is connected to the side wall frame 54.

[0107] By adjusting the front-to-back distance between the first beam 551 and the second beam 552, the front-to-back fixed position of the side door frame 62 can be adjusted to ensure the accurate doorway dimensions of the door assembly 6 and simplify the assembly operation of the door assembly 6.

[0108] Since the side wall outer plate 53 shields the side wall framework 54, the side wall outer plate 53 and the side wall framework 54 are fixed relative to the side door frame 62, the side door frame 62 needs to be finely adjusted in position, and there is an adjusting beam 55 between the side door frame 62 and the side wall framework 54, in order to shield the adjusting beam 55, a compensation plate 63 is further arranged on the outer side of the side door frame 62, so that the outer side plate surface of the compensation plate 63 is flush with the outer side plate surface of the side wall outer plate 53, and one side edge of the compensation plate 63 is connected with one side edge of the side wall outer plate 53, so as to avoid the generation of surface difference and gap between the side door frame 62 and the side wall outer plate 53, and to ensure the appearance and aesthetic performance of the side wall.

[0109] The above description is merely preferred embodiments of the present application, but not to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A railcar underframe assembly, characterized by, The utility model relates to a kind of vehicle body frame, including: Two side beams (1) are distributed in the left and right direction of vehicle body at intervals;Each of the side beams (1) extends in the front and rear direction of vehicle body;And Two groups of pillow beams (2) are located between the two side beams (1), and are distributed in the front and rear direction of vehicle body at intervals;Each of the pillow beams (2) includes a plurality of webs (21) distributed in the front and rear direction of vehicle body at intervals, a plurality of vertical plates (22) distributed in the left and right direction of vehicle body at intervals, upper cover plate (23), lower cover plate (24), two groups of upper connecting transition plates (25) and two groups of lower connecting transition plates (26); Each of the webs (21) extends in the left and right direction of vehicle body, and the two ends of each of the webs (21) extend to the inner side of the two side beams (1) respectively;Each of the vertical plates (22) extends in the front and rear direction of vehicle body, and each of the vertical plates (22) is arranged between the plurality of webs (21); The upper cover plate (23) is fixedly arranged at the top end of the plurality of webs (21) and the top end of the plurality of vertical plates (22);The lower cover plate (24) is fixedly arranged at the bottom end of the plurality of webs (21) and the bottom end of the plurality of vertical plates (22);In the left and right direction of vehicle body, the two ends of each of the webs (21) respectively extend out of the upper cover plate (23) and the lower cover plate (24); Two groups of upper connecting transition plates (25) are arranged at the top end of the two end extending parts of the plurality of webs (21) respectively;Two groups of lower connecting transition plates (26) are arranged at the bottom end of the two end extending parts of the plurality of webs (21) respectively;In the left and right direction of vehicle body, the outer side edge of the upper connecting transition plate (25) is connected with the top end inner edge of the side beam (1), and the inner side edge is connected with the outer side edge of the upper cover plate (23);The outer side edge of the lower connecting transition plate (26) is connected with the bottom end inner edge of the side beam (1), and the inner side edge is connected with the outer side edge of the lower cover plate (24); In the plurality of vertical plates (22), the two vertical plates (22) defined on the left and right sides are end plates (27), and the outer side edges of the end plates (27) respectively extend to the outer sides of the upper cover plate (23) and the lower cover plate (24);The end plate (27) is a bent plate structure in the shape of F, and the two end plates (27) and the upper cover plate (23) and the lower cover plate (24) form a cavity structure therebetween; The upper connecting transition plate (25) is also abutted with the extension part of the upper end surface of the end plate (27), and the lower connecting transition plate (26) is also abutted with the extension part of the lower end surface of the end plate (27).

2. The railcar underframe assembly of claim 1, wherein, The top end of at least one group of vertical plates (22) is provided with two groups of first bevel edges (221) arranged symmetrically; The upper cover plate (23) is provided with a first welding part (231) extending downward, and the bottom end of the first welding part (231) is provided with two groups of second bevel edges (232) arranged symmetrically, and the two groups of second bevel edges (232) correspond to the two groups of first bevel edges (221) one by one and are welded and fixed.

3. The railcar underframe assembly of claim 1, wherein, The rail vehicle underframe assembly further comprises a plurality of crossbeams (3) distributed along the front-rear direction of the vehicle body; each of the crossbeams (3) extends along the left-right direction of the vehicle body; In the up-down direction of the vehicle body, the upper surface of the crossbeam (3) is below the upper surface of the side beam (1); in the left-right direction of the vehicle body, the upper end of the outer side edge of the crossbeam (3) is connected to the upper end of the inner side edge of the side beam (1) through a transition wing plate (31); In the up-down direction of the vehicle body, the lower surface of the crossbeam (3) is flush with the lower surface of the side beam (1); in the left-right direction of the vehicle body, the lower end of the outer side edge of the crossbeam (3) is connected to the lower end of the inner side edge of the side beam (1).

4. A rail vehicle, characterized in that Comprise: The rail vehicle underframe assembly of any one of claims 1-3; Two groups of side walls (5) are arranged along the left-right direction of the vehicle body and are respectively fixed on the left and right sides of the rail vehicle underframe assembly; each group of side walls (5) is provided with a door assembly (6); the top ends of the two groups of side walls (5) are respectively provided with a second connecting part (51); Two groups of end walls (7) are arranged along the front-rear direction of the vehicle body and are respectively fixed on the front and rear sides of the rail vehicle underframe assembly and the two groups of side walls (5); and A roof structure (4) is fixedly arranged at the top ends of the two groups of side walls (5) and the two groups of end walls (7); in the left-right direction of the vehicle body, the two side edges of the roof structure (4) are respectively provided with a first connecting part (41); Wherein, the first connecting part (41) and the second connecting part (51) are respectively arranged along the front-rear direction of the vehicle body, and the first connecting part (41) and the second connecting part (51) are snap-welded.

5. A rail vehicle as claimed in claim 4, characterised in that The first connecting part (41) comprises a first inner side vertical plate (411), a first horizontal plate (412) and a first outer side vertical plate (413) connected in sequence along the left-right direction of the vehicle body; the first inner side vertical plate (411), the first horizontal plate (412) and the first outer side vertical plate (413) form a groove structure with the opening facing downward; The second connecting part (51) comprises a second inner side vertical plate (511), a second horizontal plate (512) and a second outer side vertical plate (513) connected in sequence along the left-right direction of the vehicle body; the inner side edge of the second horizontal plate (512) is connected to the lower end edge of the second inner side vertical plate (511), and the outer side edge of the second horizontal plate (512) is connected to the upper end edge of the second outer side vertical plate (513); Wherein, the first inner side vertical plate (411) and the second inner side vertical plate (511) are welded, and the first outer side vertical plate (413) and the second outer side vertical plate (513) are welded.

6. The rail vehicle of claim 4, wherein, The inner side of the first connecting part (41) is provided with an upper connecting plate (42) corresponding to the upper side of the door assembly (6), and the upper connecting plate (42) is connected to the top surface of the door assembly (6); The top end of the door assembly (6) is provided with a reinforcing plate (61) protruding upward, the top end of the reinforcing plate (61) is inwardly inclined and bent, and is connected to the inner side of the roof structure (4).

7. The rail vehicle of claim 4, wherein, The side wall (5) comprises a side wall outer plate (53) and a side wall framework (54) supported inside the side wall outer plate (53); An adjusting beam (55) is arranged between a side door frame (62) of the vehicle door assembly (6) and the side wall framework (54), and the adjusting beam (55) is used for defining a fixed position of the side door frame (62); An outer side surface of the side door frame (62) is further provided with a compensation plate (63), an outer side plate surface of the compensation plate (63) is flush with an outer side plate surface of the side wall outer plate (53), and one side edge of the compensation plate (63) is connected with one side edge of the side wall outer plate (53).

Images