Underframe, vehicle body and rail vehicle

Abstract

The invention discloses a chassis, a vehicle body and a railway vehicle, and relates to the technical field of railway vehicles. In the bottom frame, each of the two edge beams comprises a plurality of edge beam sections arranged at intervals, corresponding mounting seats are connected between the close ends of the adjacent edge beam sections in the same edge beam, and the two mounting seats arranged in pairs and the two escape ladders are distributed on the two sides of the bottom frame in the width direction and can be located below vehicle doors on the two sides of a vehicle body. The two escape ladders arranged in pairs are arranged on the corresponding one of the mounting seats arranged in pairs; the reinforcing cross beams are fixedly connected to the bottom of the floor, and the two reinforcing cross beams arranged in pairs extend in the width direction of the bottom frame in parallel and are arranged on the two sides, in the length direction of the bottom frame, of the mounting bases arranged in pairs. And the two ends of the reinforcing cross beams are connected to the corresponding mounting seats and the side beam sections close to the reinforcing cross beams. The underframe solves the problem that a sinking type escape ladder arrangement scheme meeting the safety strength and rigidity is lacked.

Description

Technical Field

[0001] The present application relates to the technical field of rail vehicles, and more specifically, to an underframe, a vehicle body, and a rail vehicle. Background Art

[0002] As the speed of EMUs continues to increase, the strength requirements of the EMU body must meet the relevant requirements of the target national standards, and at the same time, there should be sufficient safety margin. The underframe is an important load-bearing component of the body and even the entire vehicle. Its structural strength and rigidity are the cornerstones for the entire EMU body to meet safety requirements. At the same time, some EMUs need to arrange a sunken escape ladder under the door in the middle position of the underframe along its own length. The arrangement of the sunken escape ladder requires the complete breaking of the underframe side beams, which has a great negative impact on the structural strength and rigidity of the EMU. At present, there is a lack of arrangements for sunken escape ladders that meet safety strength and rigidity.

[0003] In summary, how to provide a layout solution for a sunken escape ladder that meets safety strength and rigidity requirements is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the purpose of the present application is to provide a chassis that solves the problem of the lack of a sunken escape ladder arrangement solution that meets the safety strength and rigidity requirements.

[0005] Another object of the present application is to provide a vehicle body comprising the above-mentioned underframe.

[0006] Another object of the present application is to provide a rail vehicle comprising the above-mentioned vehicle body.

[0007] In order to achieve the above objectives, this application provides the following technical solutions:

[0008] A chassis, comprising: a floor, two side beams, escape ladders arranged in pairs, a mounting base and a reinforcing crossbeam;

[0009] The two side beams extend along the length direction of the base frame and are arranged in parallel, and the floor is located in the area between the two side beams and is connected to the two side beams;

[0010] The two side beams each include a plurality of side beam segments arranged at intervals, and corresponding mounting seats are connected between adjacent ends of adjacent side beam segments in the same side beam, and two of the mounting seats arranged in pairs and two of the escape ladders arranged in pairs are distributed on both sides of the chassis along the width direction and can be located below the doors on both sides of the vehicle body, and the two escape ladders arranged in pairs are arranged on a corresponding one of the mounting seats arranged in pairs;

[0011] The reinforcing beams are fixedly connected to the bottom of the floor, and two of the reinforcing beams arranged in pairs extend along the width direction of the base frame and are arranged in parallel. The two of the reinforcing beams arranged in pairs are arranged on both sides of the mounting seats arranged in pairs along the length direction of the base frame, and the two ends of the reinforcing beams are connected to the corresponding mounting seats and the side beam sections close to themselves.

[0012] Preferably, the chassis further comprises stress buffer beams arranged in pairs;

[0013] The stress buffer beams extend along the length direction of the chassis, and the paired reinforcing beams are each provided with a pair of stress buffer beams connected thereto on both sides along the length direction of the chassis;

[0014] The two stress buffer beams arranged in pairs are arranged opposite to each other and distributed on both sides of the base frame along the width direction, and the stress buffer beams are fixedly connected to the bottom of the floor and the inner side of the side beam.

[0015] Preferably, the chassis further comprises a transformer, and both sides of the transformer along its own width direction are provided with mounting feet, and the mounting feet are fixedly connected to the stress buffer beams arranged opposite to each other.

[0016] Preferably, the mounting seat is arranged along the length direction of the base frame, and the mounting seat includes an outer side wall and an inner side wall;

[0017] The inner side wall is located between two of the paired reinforcing beams and is connected to the two, and the top side edge of the inner side wall is connected to the floor, and the top environment and the bottom environment of the floor are separated by the inner side wall;

[0018] The outer side wall is located outside the reinforcing cross beam, and the end of the reinforcing cross beam abuts and is fixedly connected to the outer side wall, and the top structures at both ends of the outer side wall are connected to the adjacent side beam sections;

[0019] The inner side wall and the outer side wall are arranged to form an installation space, and the installation opening of the installation space is located in the middle of the length of the outer side wall, and the escape ladder is installed in the installation space.

[0020] Preferably, the outer side wall includes a hanging wall panel at the top and a shielding wall panel at the bottom;

[0021] The hoisting wall panel and the inner side wall are arranged to form the installation space, and the top structures at both ends of the hoisting wall panel are connected to the adjacent side beam sections, and the installation opening is located in the middle of the length of the hoisting wall panel;

[0022] The chassis further comprises an equipment cabin, which is located at a middle position of the bottom relative to the mounting seat, and the bottom side of the shielding wall panel is connected to the equipment cabin.

[0023] Preferably, the inner side wall comprises an inner side wall body and a support beam;

[0024] The support beam comprises a cross beam portion and a longitudinal beam portion, the top side of the longitudinal beam portion contacts and is connected to the cross beam portion, and the side of the cross beam portion away from the outer side wall is connected to the floor;

[0025] The inner wall body is a flat beam body, the bottom side of the inner wall body is connected to the bottom side of the hanging wall panel, and the top side of the inner wall body extends toward the side away from the outer wall and is connected to the bottom side of the longitudinal beam part.

[0026] Preferably, the hoisting wall panel is an obtuse-angle bending structure, the bottom of the hoisting wall panel is a transverse fold wall, and the top is a longitudinal fold wall. The top side of the longitudinal fold wall is connected to the side beam, and the side of the transverse fold wall away from the longitudinal fold wall is connected to the inner wall body. The top of the transverse fold wall has an escape ladder joint, and the escape ladder joint is a C-profile for installing an escape ladder.

[0027] Preferably, the reinforcing crossbeam comprises a crossbeam body and two reinforcing oblique beams;

[0028] The crossbeam body is a linear structure, and both ends of the crossbeam body are connected to the side beams opposite to the base frame body;

[0029] The two reinforcing oblique beams are symmetrically arranged at the two ends of the crossbeam body, and the ends of the two reinforcing oblique beams that are far away from each other are connected to the outer side walls of the mounting seats that are oppositely arranged.

[0030] Preferably, the bottom sides of the adjacent side beam sections close to the end structures are provided with mounting grooves, and the tops of both ends of the hanging wall panels are embedded in and clamped in the mounting grooves of the adjacent side beam sections;

[0031] The bottom side and the top side of the same end of the outer wall pass through an arc-shaped waist structure, and the top structure length of the outer wall is greater than the bottom structure length of the outer wall.

[0032] Preferably, the hoisting wall panel, the shielding wall panel, the inner wall body and the support beam are all hollow profiles formed by pultrusion;

[0033] Both ends of the mounting seat are provided with sealing plates to close the openings at both ends of the mounting seat;

[0034] The top side of the hanging wall panel has a side beam joint, which is overlapped and matched with the side beam section. The bottom side of the shielding wall panel has an equipment cabin joint for installing the equipment cabin. The side of the crossbeam portion away from the outer side wall has a floor joint, which is overlapped and matched with the floor.

[0035] The longitudinal beam portion and the inner side wall body both have a first assembly joint, and the longitudinal beam portion and the inner side wall body are connected through the first assembly joint with overlap fit;

[0036] The inner wall body and the hanging wall plate both have a second mounting joint, and the inner wall body and the hanging wall plate are connected via the second mounting joint in an overlapping manner;

[0037] The shielding wall panel and the hanging wall panel both have a third installation joint, and the shielding wall panel and the hanging wall panel are connected via the third installation joint that is overlapped.

[0038] A vehicle body comprises the underframe described in any one of the above items.

[0039] A rail vehicle comprises the above-mentioned vehicle body.

[0040] In this application, the base frame is equipped with a floor and two side beams. The two side beams are arranged in parallel and spaced apart. The extension direction of the two side beams is the length direction of the base frame, and the vertical connection line of the two side beams is the width direction of the base frame, and the floor is arranged between the two side beams.

[0041] In order to meet the installation requirements of the escape ladder and ensure the strength of the chassis, the chassis is also equipped with paired mounting seats and reinforcing crossbeams. When the chassis is only provided with a pair of mounting seats, the side beam is composed of two side beam sections arranged at intervals. The two side beam sections in the same side beam are connected by the mounting seats located between the two. Since the doors of the vehicle body are symmetrically distributed, in order to install the escape ladder under the vehicle door, two of the pair of mounting seats are oppositely arranged on both sides along the width direction of the chassis and are both located below the vehicle door, so that the escape ladder installed on the mounting seats is also located below the vehicle door. The invention relates to a novel cross-beam structure for escaping from a vehicle body, wherein the cross-beam structure is provided at the bottom of the vehicle body, wherein the cross-beam structure is provided at the bottom of the vehicle body, wherein the cross-beam structure is provided at the bottom of the vehicle body, wherein the cross-beam structure is provided at the bottom of the vehicle body, and the cross-beam structure is provided at the bottom of the vehicle body, wherein the cross-beam structure is provided at the bottom of the vehicle body, and the cross-beam structure is provided at the bottom of the vehicle body, and the cross-beam structure is provided at the bottom of the vehicle body, and the cross-beam structure is provided at the bottom of the vehicle body, and the cross-beam structure is provided at the bottom of the vehicle body, and the cross-beam structure is provided at the bottom of the vehicle body, and the cross-beam structure is provided at the bottom of the vehicle body, and the cross-beam structure is provided at the bottom of the vehicle body, and the cross-beam structure is provided at the bottom of the vehicle body, BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0043] Figure 1 A schematic diagram of the structure of a specific embodiment provided in this application;

[0044] Figure 2 A schematic diagram of a partial structure of a specific embodiment provided in this application;

[0045] Figure 3 A schematic cross-sectional view of a mounting base according to a specific embodiment of the present application;

[0046] Figure 4 This is a schematic diagram of the installation of a transformer according to a specific embodiment of the present application;

[0047] Figure 5 A cross-sectional diagram of the assembly position of the mounting bracket and the stress buffer beam according to a specific embodiment of the present application;

[0048] Figure 6 This is a schematic diagram of the closed state of the escape ladder of the specific embodiment provided in this application;

[0049] Figure 7 This is a schematic diagram of the escape ladder in the open state according to a specific embodiment of the present application;

[0050] Figure 8 This is a schematic structural diagram of a reinforcement beam according to a specific embodiment of the present application;

[0051] Figure 9 This is a schematic diagram of the equipment cabin installation of the specific embodiment provided in this application;

[0052] Figure 10 This is a schematic diagram of the assembly of the mounting base and the equipment compartment of the specific embodiment provided in this application;

[0053] Figure 11 This is a schematic diagram of the assembly of the mounting base and the side beam of the specific embodiment provided in this application;

[0054] Figure 12 This is a schematic diagram of the assembly structure of the mounting base and the floor according to the specific embodiment provided in this application;

[0055] Figure 13 This is a schematic diagram of the partial structure of the vehicle body of the specific embodiment provided in this application.

[0056] Reference numerals:

[0057] 1- Floor; 2- Side beam; 21- Side beam section; 3- Escape ladder;

[0058] 4-Mounting seat;

[0059] 41-outer side wall; 411-hoisting wall panel; 4111-transverse folding wall; 4112-escape ladder joint; 4113-longitudinal folding wall; 4114-side beam joint; 412-shielding wall panel; 4121-equipment compartment joint; 413-sealing plate;

[0060] 42-inner wall; 421-inner wall body; 422-support beam; 4221-cross beam; 4222-longitudinal beam; 4223-floor joint;

[0061] 43-installation space; 431-installation port;

[0062] 44-first assembly joint; 45-second installation joint; 46-third installation joint;

[0063] 5-Reinforced crossbeam; 51-Beam body; 511-Wire hole; 52-Reinforced diagonal beam; 6-Stress buffer beam; 7-Transformer; 71-Mounting foot; 8-Equipment compartment;

[0064] 9-Door; 10-Side wall. DETAILED DESCRIPTION

[0065] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0066] The core of this application is to provide an underframe that solves the problem of the lack of a layout solution for the sunken escape ladder 3 that meets the safety strength and rigidity requirements. Another core of this application is to provide a vehicle body including the above-mentioned underframe. Another core of this application is to provide a rail vehicle including the above-mentioned vehicle body.

[0067] The present application provides a chassis, comprising a floor 1, two side beams 2, an escape ladder 3 arranged in pairs, a mounting base 4, and a reinforcing crossbeam 5; wherein the two side beams 2 extend along the length direction of the chassis and are arranged in parallel, and the floor 1 is located in the area between the two side beams 2 and is connected to the two side beams 2;

[0068] Each of the two side beams 2 includes a plurality of side beam sections 21 spaced apart from each other, and corresponding mounting seats 4 are connected between the adjacent ends of adjacent side beam sections 21 in the same side beam 2. Two of the paired mounting seats 4 and two of the paired escape ladders 3 are distributed on both sides of the chassis along the width direction and can be located below the doors 9 on both sides of the vehicle body. The two paired escape ladders 3 are provided on a corresponding one of the paired mounting seats 4.

[0069] The reinforcing beam 5 is fixedly connected to the bottom of the floor 1, and two of the paired reinforcing beams 5 extend along the width direction of the base frame and are arranged in parallel. The two of the paired reinforcing beams 5 are arranged on both sides of the paired mounting seats 4 along the length direction of the base frame, and the two ends of the reinforcing beam 5 are connected to the corresponding mounting seats 4 and the side beam section 21 close to itself.

[0070] refer to Figure 1 and Figure 2 As described, the base frame is equipped with a floor 1 and two side beams 2. The two side beams 2 are arranged in parallel and spaced apart. The extension direction of the two side beams 2 is the length direction of the base frame, and the vertical line connecting the two side beams 2 is the width direction of the base frame, and the floor 1 is arranged between the two side beams 2.

[0071] refer to Figure 1 、 Figure 2 and Figure 13 As explained, in order to meet the installation requirements of the escape ladder 3 and ensure the strength of the chassis, the chassis is also equipped with mounting seats 4 and reinforcing beams 5 arranged in pairs. Figure 1 、 Figure 2 and Figure 13The embodiment shown in the figure only has a pair of mounting seats 4 for explanation, the side beam 2 is composed of two side beam sections 21 arranged at intervals, and the two side beam sections 21 in the same side beam 2 are connected by the mounting seat 4 located therebetween, that is, the left end of the mounting seat 4 is connected to the right end structure of the left side beam section 21, and the right end of the mounting seat 4 is connected to the left end structure of the right side beam section 21. Moreover, since the doors 9 of the vehicle body are symmetrically distributed, in order to install the escape ladder 3 that needs to be located below the vehicle doors 9, two of the pair of mounting seats 4 are oppositely arranged on both sides along the width direction of the chassis, and are both located below the vehicle doors 9, so that the escape ladder 3 installed on the mounting seats 4 is also located below the vehicle doors 9, thereby being able to meet the needs of escaping on both sides of the vehicle body; and In addition, a pair of reinforcing beams 5 are installed at the bottom of the floor 1, and the reinforcing beams 5 extend along the width direction of the base frame. Two of the pair of reinforcing beams 5 are arranged at intervals along the length direction of the base frame and are relatively arranged on both sides of a pair of mounting seats 4. The left end of the mounting seat 4 extends toward and is connected to a reinforcing beam 5 located on its own left side, and the right end of the mounting seat 4 extends toward and is connected to a reinforcing beam 5 located on its own right side, and the ends of the reinforcing beams 5 are connected to the ends of the side beam sections 21 in the two side beams 2 that are close to each other, so that the escape ladder 3 can be directly supported with high strength by the reinforcing beams 5, and the overall strength of the base frame is high, which effectively solves the problem of the lack of a layout scheme for the sunken escape ladder 3 that meets the safety strength and rigidity.

[0072] It should be noted that the number of pairs of escape ladders 3, mounting bases 4 and reinforcing beams 5 is not limited to one pair in the above-mentioned example embodiment, but can also be more pairs. Preferably, the number of pairs of escape ladders 3, mounting bases 4 and reinforcing beams 5 is the same, and is less than or equal to the number of pairs of doors 9 provided on the vehicle body. The arrangement of each pair of multiple pairs of escape ladders 3, mounting bases 4 and reinforcing beams 5 is the same as the arrangement of one pair provided in the above-mentioned example embodiment.

[0073] On the basis of the above embodiment, the chassis further includes stress buffer beams 6 arranged in pairs;

[0074] The stress buffer beam 6 extends along the length direction of the chassis, and the paired reinforcement beams 5 are each provided with a pair of stress buffer beams 6 connected thereto on both sides along the length direction of the chassis;

[0075] The two stress buffer beams 6 arranged in pairs are arranged opposite to each other and distributed on both sides of the chassis along the width direction, and the stress buffer beams 6 are fixedly connected to the bottom of the floor 1 and the inner side of the adjacent edge beam 2 .

[0076] refer to Figure 1 、 Figure 2 and Figure 4As explained above, in order to further increase the rigidity of the vehicle and reduce stress concentration, a pair of stress buffer beams 6 are provided at the bottom of the floor 1. The stress buffer beams 6 are located in the area between the two side beams 2. The stress buffer beams 6 extend along the length direction of the chassis, and a pair of stress buffer beams 6 are provided on both sides of the chassis in the length direction. Figure 1 、 Figure 2 and Figure 4 The embodiment shown in the figure is for illustration only in which a pair of reinforcing beams 5 are provided. A pair of stress buffer beams 6 are provided on the left and right sides of the reinforcing beam 5. The right ends of the pair of stress buffer beams 6 on the left are connected to the reinforcing beam 5 on the left, and the left ends of the pair of stress buffer beams 6 on the right are connected to the reinforcing beam 5 on the right, and one of the stress buffer beams 6 in each pair is connected to the side beam 2 on one side of the chassis along its own width direction, and the other is connected to the side beam 2 on the other side of the chassis along its own width direction.

[0077] On the basis of the above embodiment, the chassis further includes a transformer 7 . The transformer 7 has mounting feet 71 on both sides along its own width direction. The mounting feet 71 are fixedly connected to the stress buffer beams 6 arranged opposite to each other.

[0078] refer to Figure 4 As explained above, in order to meet the internal power supply requirements of the vehicle, the chassis is equipped with a transformer 7, which is arranged on the side of the paired reinforcing beams 5. While meeting the rigidity requirements, in order to meet the installation requirements of the transformer 7, the transformer 7 is provided with mounting feet 71 on both sides along its own width direction. The mounting feet 71 are connected to a pair of stress buffer beams 6 located on the right side of the paired reinforcing beams 5. Figure 5 As explained above, the transformer 7 can be hoisted at the bottom of the chassis.

[0079] It should be noted that the connection method between the transformer 7 and the stress buffer beam 6 is not limited, as long as the hoisting strength requirements are met, for example, Figure 5 As explained, the bottom wall of the stress buffer beam 6 has a mounting hole, and the mounting foot 71 of the transformer 7 also has a mounting hole. Fasteners are inserted into the coaxial mounting through holes of the mounting foot 71 and the stress buffer beam 6 to fix the transformer 7 and the stress buffer beam 6. The fasteners can be bolts or rivets, or welding can be used.

[0080] On the basis of the above embodiment, the mounting seat 4 is arranged along the length direction of the base frame, and the mounting seat 4 includes an outer side wall 41 and an inner side wall 42;

[0081] The inner wall 42 is located between two of the paired reinforcing beams 5 and is connected to the two. The top side of the inner wall 42 is connected to the floor 1, and the inner wall 42 separates the top environment and the bottom environment of the floor 1.

[0082] The outer side wall 41 is located outside the reinforcing cross beam 5 , and the end of the reinforcing cross beam 5 abuts and is fixedly connected to the outer side wall 41 . The top structures at both ends of the outer side wall 41 are connected to the adjacent side beam section 21 .

[0083] The inner wall 42 and the outer wall 41 enclose an installation space 43 , and an installation opening 431 of the installation space 43 is located in the middle of the length of the outer wall 41 . The escape ladder 3 is installed in the installation space 43 .

[0084] refer to Figure 1 and Figure 2 As explained, the outer side wall 41 of the mounting seat 4 is located at the bottom of the side beam 2 and on the side in the width direction of the chassis, that is, on the side of the reinforcing beam 5 along its own length direction, then the two ends of the reinforcing beam 5 extend toward the oppositely arranged mounting seat 4 and are connected to the outer side wall 41 of the oppositely arranged mounting seat 4; and the inner side wall 42 of the mounting seat 4 is located in the area between the two paired reinforcing beams 5, and the two ends of the inner side wall 42 are connected to the opposite sides of the two oppositely arranged reinforcing beams 5.

[0085] As described above, the ends of the two oppositely arranged reinforcing beams 5 are connected to the outer side wall 41, and the two ends of the inner side wall 42 are connected to the opposite sides of the oppositely arranged reinforcing beam 5. The length of the outer side wall 41 is greater than the length of the inner side wall 42. The two ends of the outer side wall 41 protrude from the inner side wall 42 so as to be connected to the adjacent side beam section 21 of the side beam 2. The length of the inner side wall 42 and the outer side wall 41 is surrounded by a structure to form an installation space 43. The installation space 43 can be Figure 3 As shown in the trapezoidal chamber or the multi-step stepped chamber, the installation opening 431 on the side of the installation space 43 is opened in the middle position of the length of the outer wall 41, the escape ladder 3 is arranged in the installation space 43, and the escape door of the escape ladder 3 can open or close the installation opening 431.

[0086] The inner side wall 42 of the mounting seat 4 is a non-porous plate, that is, the inner side wall 42 is a wall plate without a through-hole along its own thickness direction, so as to achieve stair support for the escape ladder 3 and sealing of the vehicle.

[0087] On the basis of the above embodiment, the outer side wall 41 includes a hanging wall panel 411 at the top and a shielding wall panel 412 at the bottom;

[0088] The hanging wall panel 411 and the inner wall 42 are enclosed to form an installation space 43, and the top structures at both ends of the hanging wall panel 411 are connected to the adjacent side beam sections 21, and the installation opening 431 is located in the middle of the length of the hanging wall panel 411;

[0089] The chassis also includes an equipment cabin 8 , which is located in the middle of the bottom relative to the mounting base 4 , and the bottom side of the shielding wall panel 412 is connected to the equipment cabin 8 .

[0090] refer to Figure 1 As explained, the outer wall 41 is composed of two parts, namely a hoisting wall panel 411 and a shielding wall panel 412. The hoisting wall panel 411 is used to connect the side beam 2 and is provided with the above-mentioned mounting port 431, and the top side of the shielding wall panel 412 is connected to the bottom side of the hoisting wall panel 411, and the bottom side of the shielding wall panel 412 is connected to the equipment cabin 8, so that the equipment cabin 8 is hoisted at the bottom of the mounting seat 4, such as the two are overlapped close to the side and fixedly connected by fasteners, and a sealing sheet is clamped at the overlap joint so that it can serve as a part of the bulkhead of the equipment cabin 8. Then, the base frame can meet the requirement of setting the equipment cabin 8 in the middle position at the bottom of the two relatively set mounting seats 4, that is, it is set at the bottom of the floor 1 and is located in the area between the two relatively set mounting seats 4.

[0091] Furthermore, the outer wall 41 of the mounting seat 4 is a profiling structure of the upper part of the outer wall 41 of the equipment cabin 8, and the bottom side of the shielding wall panel 412 is sealed and connected to the crossbeam portion 4221 and the sealing plate at the middle height position of the equipment cabin 8, and the bottom side of the shielding wall panel 412 transitions to fit the bottom side wall of the equipment cabin 8.

[0092] Based on the above embodiment, the inner wall 42 includes an inner wall body 421 and a support beam 422;

[0093] The support beam 422 includes a transverse beam portion 4221 and a longitudinal beam portion 4222 . The top side of the longitudinal beam portion 4222 contacts and is connected to the transverse beam portion 4221 . The side of the transverse beam portion 4221 away from the outer wall 41 is connected to the floor 1 .

[0094] The inner wall body 421 is a flat-plate beam body, the bottom side of the inner wall body 421 is connected to the bottom side of the hanging wall panel 411, and the top side of the inner wall body 421 extends toward the side away from the outer wall 41 and is connected to the bottom side of the longitudinal beam part 4222.

[0095] refer to Figure 3 As shown, the inner wall 42 is mainly composed of an inner wall body 421 and a support beam 422. In the support beam 422, the horizontal beam portion 4221 located at the bottom and the longitudinal beam portion 4222 located at the top are perpendicularly intersected and connected. The support beam 422 can be Figure 3 The inverted L-shaped structure or T-shaped structure shown in FIG4 is a schematic diagram of an embodiment of the present invention; the hanging wall panel 411 is matched with the support beam 422, and the two are connected through the inner wall body 421. The inner wall body 421 adopts a flat plate structure, and the support beam 422 is located obliquely above the inner side of the outer wall 41. The top side of the inner wall body 421 is connected to the bottom side of the hanging wall panel 411, and the bottom side of the inner wall body 421 is connected to the bottom side of the longitudinal beam part 4222 of the support beam 422.

[0096] When the mounting base 4 is set on the chassis, refer to Figure 3 、 Figure 6 and Figure 7 Taking the mounting base 4 that can be set on the right side of the base frame as an example, the crossbeam portion 4221 at the top of the support beam 422 extends in the horizontal direction, and the left side edge of the crossbeam portion 4221 is connected to the floor 1, the hanging wall panel 411 is located on the right outer side, and the top side edge of the hanging wall panel 411 is connected to the side beam 2 located on the right side of the base frame.

[0097] Based on the above embodiment, the hoisting wall panel 411 is an obtuse-angle bending structure. The bottom of the hoisting wall panel 411 is a transverse fold wall 4111, and the top is a longitudinal fold wall 4113. The top side of the longitudinal fold wall 4113 is connected to the side beam 2, and the side of the transverse fold wall 4111 away from the longitudinal fold wall 4113 is connected to the inner wall body 421. The top of the transverse fold wall 4111 has an escape ladder joint 4112, and the escape ladder joint 4112 is a C-profile for installing the escape ladder 3.

[0098] The complete cross section of the mounting seat 4 without the mounting opening 431 is as follows Figure 3 As shown, the hoisting wall panel 411 adopts an obtuse-angle bending structure, that is, the inner angle between the bottom transverse fold wall 4111 and the top longitudinal fold wall 4113 is an obtuse angle. The cross section after the mounting seat 4 cuts off the wall surface of the longitudinal fold wall 4113 of a preset length to form the mounting opening 431 is shown in FIG. Figure 6 and Figure 7 The top surface of the transverse fold wall 4111 is flat, and an escape ladder joint 4112 is provided at the top of the transverse fold wall 4111. The escape ladder joint 4112 is a C-profile with an opening facing upward, so as to facilitate the positioning and installation of the escape ladder 3. The cross-sectional shape of the transverse fold wall 4111 is triangular, and the first top angle of the transverse fold wall 4111 is connected to the longitudinal fold wall 4113, the second top angle is connected to the inner wall body 421, and the bottom angle is connected to the shielding wall panel 412.

[0099] On the basis of the above embodiment, the reinforcement beam 5 comprises a beam body 51 and two reinforcement diagonal beams 52;

[0100] The crossbeam body 51 is a linear structure, and both ends of the crossbeam body 51 are connected to the side beams 2 opposite to each other along the chassis body;

[0101] The two reinforcing oblique beams 52 are symmetrically arranged at both ends of the crossbeam body 51 , and the ends of the two reinforcing oblique beams 52 that are separated from each other are connected to the outer side walls 41 of the mounting base 4 that are oppositely arranged.

[0102] refer to Figure 2 and Figure 8As explained, in the reinforcing beam 5, the beam body 51 adopts a straight beam body, the beam portion 4221 main body is directly contacted and arranged on the floor 1, and two reinforcing oblique beams 52 are arranged on the side of the beam portion 4221 main body away from the floor 1, and the pointed ends of the two reinforcing oblique beams 52 are close to each other and the connecting ends are far away from each other, that is, the pointed ends of the two reinforcing oblique beams 52 extend toward each other toward the middle position of the length of the beam portion 4221 main body, and the connecting ends extend to the two ends of the beam portion 4221 main body, and the reinforcing oblique beams 52 are arranged between the two side beams 2. Specifically, the two ends of the beam portion 4221 main body are connected to the side beams 2, and the connecting ends of the reinforcing oblique beams 52 are connected to the lifting wall panels 411 and / or the shielding wall panels 412 of the outer wall 41, so as to improve the strength of the chassis while reducing its own weight.

[0103] In some embodiments, the connection end of the reinforcing oblique beam 52 connected to the mounting seat 4 is designed to imitate the inner surface of the outer wall 41, and the connection end of the reinforcing oblique beam 52 is attached to and fixedly connected to the inner surface of the outer wall 41.

[0104] Furthermore, the crossbeam body 51 has a wire hole 511 for allowing cables and / or pipes to pass through. Figure 8 As explained, the wire hole 511 passes through the width direction of the beam body 51 , and the width direction of the beam body 51 is the length direction of the chassis, thereby improving the rationality of the arrangement of pipes and cables.

[0105] On the basis of the above embodiment, the bottom sides of the adjacent side beam sections 21 close to the end structure are provided with mounting grooves, and the top ends of the hanging wall panels 411 are embedded and clamped in the mounting grooves of the adjacent side beam sections 21;

[0106] The bottom side and the top side of the same end of the outer wall 41 pass through the arc-shaped waist structure, and the top structure length of the outer wall 41 is greater than the bottom structure length of the outer wall 41.

[0107] refer to Figure 1 、 Figure 2 and Figure 4 As explained, installation grooves are provided at the adjacent ends of the adjacent side beam sections 21 of the side beam 2, and the installation grooves are located at the bottom of the side beam 2. The two ends of the hanging wall panel 411 extend close to the side beam section 21, and the top structures at both ends of the hanging wall panel 411 are embedded in the installation grooves, and the hanging wall panel 411 is fixedly connected to the groove wall of the installation groove by welding and / or bonding to improve the connection strength between the side beam 2 and the mounting seat 4.

[0108] To reduce stress concentration, refer to Figure 2 As explained, rounded corner structures are processed at both ends of the outer side wall 41, so that the left end surface and the right end surface of the outer side wall 41 are both arc-shaped waist surfaces.

[0109] All components of the mounting base 4 are constructed from pultruded hollow profiles. Specifically, based on the above-described embodiment, the hoisting panel 411, the shielding panel 412, the inner wall body 421, and the support beam 422 are all pultruded hollow profiles. It should be noted that a hollow profile is a profile having two layers connected by reinforcing ribs located between the two layers, and the hollow profile uses a triangular structure as the reinforcing ribs.

[0110] Furthermore, both ends of the mounting base 4 have sealing plates 413 to close the openings at both ends of the mounting base 4; Figure 2 As explained, since the mounting seat 4 is made of a hollow profile, in order to close the openings at both ends of the mounting seat 4, the sealing plate 413 is adhered and sealed to the two ends of the mounting seat 4, serving as the end face of the mounting seat 4. Furthermore, the sealing plate 413 is embedded in the partial structure of the mounting groove and is bonded and / or welded to the side beam 2.

[0111] Preferably, the mounting groove is a long strip groove with a rectangular cross-section shape, and the corresponding top structure of the outer side wall 41 of the mounting seat 4 is a long strip beam structure with a rectangular cross-section shape. Figure 2 As shown, the long strip beam structure at the top of the outer side wall 41 of the mounting seat 4 and the side beam section 21 together form an integrated side beam 2. In order to avoid the stress concentration area causing the allowable stress of the material to be reduced due to welding, the mounting seat 4 is bonded and welded to the side beam section 21.

[0112] Furthermore, the top side of the hanging wall panel 411 has a side beam joint 4114, which overlaps and fits with the side beam section 21. The bottom side of the shielding wall panel 412 has an equipment compartment joint 4121 for installing the equipment compartment 8. The side of the cross beam portion 4221 away from the outer wall 41 has a floor joint 4223, which overlaps and fits with the floor 1.

[0113] The longitudinal beam portion 4222 and the inner wall body 421 both have a first assembly joint 44 , and the longitudinal beam portion 4222 and the inner wall body 421 are connected by the first assembly joint 44 with overlap fit;

[0114] The inner wall body 421 and the hanging wall plate 411 both have a second mounting joint 45 , and the inner wall body 421 and the hanging wall plate 411 are connected via the second mounting joint 45 that overlaps and fits;

[0115] The shielding wall panel 412 and the hanging wall panel 411 both have a third installation joint 46 , and the shielding wall panel 412 and the hanging wall panel 411 are connected via the overlapping third installation joint 46 .

[0116] refer to Figure 3As explained, the top of the hanging wall panel 411 has a side beam joint 4114, and the left side of the cross beam 4221 has a floor joint 4223. Please refer to the following after assembly: Figure 11 and Figure 12 The side beam joint 4114 overlaps and fits with the side beam section 21, and the floor joint 4223 overlaps and fits with the floor 1. Then, by welding the floor joint 4223 to the floor 1, and the side beam joint 4114 to the side beam section 21, the assembly of the hoisting wall panel 411 to the side beam section 21, and the floor joint 4223 to the floor 1 can be realized. Further, as Figure 11 and Figure 12 As shown, both sides of the floor 1 and the bottom of the edge beam section 21 have connection joints, the edge beam joint 4114 overlaps and fits with the connection joint of the edge beam section 21, and the floor joint 4223 overlaps and fits with the corresponding connection joint of the floor 1.

[0117] refer to Figure 3 As explained, the bottom of the shielding wall plate 412 has an equipment compartment joint 4121, which is made of C-shaped material. Please refer to Figure 9 and Figure 10 The head end of the fastener and / or the connecting structure of the equipment cabin 8 is inserted into the cavity of the equipment cabin joint 4121 to achieve positioning and fixation of the equipment cabin 8.

[0118] refer to Figure 3 As explained, the bottom of the longitudinal beam portion 4222 and the upper left side of the inner wall body 421 both have a first assembly joint 44, and the two first assembly joints 44 overlap each other, and then the longitudinal beam portion 4222 and the inner wall body 421 can be assembled by bonding and / or welding the two first assembly joints 44; similarly, the lower right side of the inner wall body 421 and the lower left side of the hanging wall panel 411 both have a second assembly joint, and the two second assembly joints overlap each other, and then the inner wall body 421 and the hanging wall panel 411 can be assembled by bonding and / or welding the two second assembly joints; similarly, the top of the shielding wall panel 412 and the bottom of the hanging wall panel 411 both have a third assembly joint, and the two third assembly joints overlap each other, and then the shielding wall panel 412 and the hanging wall panel 411 can be assembled by bonding and / or welding the two third assembly joints.

[0119] It should be noted that there is no restriction on the types of the side beam joint 4114, the floor joint 4223, the first assembly joint 44, the second assembly joint and the third assembly structure. For example, an L-shaped structure or a U-shaped structure may be adopted, and the side beam joint 4114, the floor joint 4223, the first assembly joint 44, the second assembly joint and the third assembly structure may be the same or different.

[0120] Furthermore, the mounting base 4 is integrally formed with the floor 1 to reduce the number of welds and minimize welding deformation of the chassis.

[0121] Please refer to Figure 13 In addition to the above-mentioned underframe, the present application also provides a vehicle body disclosed in the above-mentioned embodiment and a rail vehicle including the above-mentioned vehicle body. For the structures of the above-mentioned vehicle body and other parts of the rail vehicle, please refer to the prior art and will not be described in detail herein.

[0122] In some embodiments, the vehicle body includes side walls 10, doors 9 and windows. The doors 9 and windows are all arranged on the side walls 10, and several windows are arranged on both sides of the door 9. The two ends of the outer wall 41 extend and protrude to both sides of the door 9, and the two ends of the outer wall 41 are located below the corresponding windows to ensure the connection strength between the mounting seat 4 and the side beam 2.

[0123] It should be noted that the relational terms such as "first" and "second" mentioned above are only used to distinguish one entity from several other entities, and do not necessarily require or imply any actual relationship or order between these entities; the "upper surface, lower surface, top, bottom" and the directional words "up, down, left, right" mentioned above are all defined based on the drawings in the specification.

[0124] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0125] The above is a detailed introduction to the chassis, vehicle body, and rail vehicle provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only intended to help understand the method and core concept of the present application. It should be noted that, for those skilled in the art, without departing from the principles of the present application, several improvements and modifications may be made to the present application, and such improvements and modifications also fall within the scope of protection of the present application.

Claims

1. A chassis, characterized in that: include: A floor (1), two side beams (2), escape ladders (3) arranged in pairs, a mounting base (4) and a reinforcing crossbeam (5); The two side beams (2) extend along the length direction of the base frame and are arranged in parallel, and the floor (1) is located in the area between the two side beams (2) and is connected to the two side beams (2); The two side beams (2) each include a plurality of side beam sections (21) arranged at intervals, and the adjacent ends of the adjacent side beam sections (21) in the same side beam (2) are connected to corresponding mounting seats (4), and two of the mounting seats (4) arranged in pairs and two of the escape ladders (3) arranged in pairs are distributed on both sides of the chassis along the width direction and can be located below the doors (9) on both sides of the vehicle body, and the two of the escape ladders (3) arranged in pairs are arranged on a corresponding one of the mounting seats (4) arranged in pairs; The reinforcing crossbeam (5) is fixedly connected to the bottom of the floor (1), and two of the paired reinforcing crossbeams (5) extend along the width direction of the chassis and are arranged in parallel. The two paired reinforcing crossbeams (5) are arranged on both sides of the paired mounting seats (4) along the length direction of the chassis, and both ends of the reinforcing crossbeam (5) are connected to the corresponding mounting seats (4) and the side beam section (21) close to the reinforcing crossbeam itself.

2. The chassis according to claim 1, wherein: The chassis further includes stress buffer beams (6) arranged in pairs; The stress buffer beam (6) extends along the length direction of the chassis, and the paired reinforcement beams (5) are each provided with a pair of the stress buffer beams (6) connected thereto on both sides along the length direction of the chassis; Two of the stress buffer beams (6) arranged in pairs are arranged opposite to each other and distributed on both sides of the chassis along the width direction, and the stress buffer beams (6) are fixedly connected to the bottom of the floor (1) and the inner side of the side beam (2).

3. The chassis according to claim 2, wherein: The chassis further comprises a transformer (7), wherein both sides of the transformer (7) along its own width direction are provided with mounting feet (71), and the mounting feet (71) are fixedly connected to the stress buffer beam (6) arranged opposite thereto.

4. The chassis according to claim 1, wherein: The mounting seat (4) is arranged along the length direction of the base frame, and the mounting seat (4) includes an outer side wall (41) and an inner side wall (42); The inner side wall (42) is located between two of the paired reinforcing beams (5) and is connected to the two. The top side edge of the inner side wall (42) is connected to the floor (1), and the top environment and the bottom environment of the floor (1) are separated by the inner side wall (42); The outer side wall (41) is located outside the reinforcing cross beam (5), and the end of the reinforcing cross beam (5) abuts against and is fixedly connected to the outer side wall (41), and the top structures at both ends of the outer side wall (41) are connected to the adjacent side beam section (21); The inner side wall (42) and the outer side wall (41) are enclosed to form an installation space (43), and the installation opening (431) of the installation space (43) is located in the middle of the length of the outer side wall (41), and the escape ladder (3) is installed in the installation space (43).

5. The chassis according to claim 4, characterized in that The outer side wall (41) includes a hanging wall panel (411) located at the top and a shielding wall panel (412) located at the bottom; The hanging wall panel (411) and the inner side wall (42) are arranged to form the installation space (43), and the top structures at both ends of the hanging wall panel (411) are connected to the adjacent side beam sections (21), and the installation opening (431) is located in the middle of the length of the hanging wall panel (411); The chassis further comprises an equipment cabin (8), the equipment cabin (8) being located at a bottom middle position relative to the mounting seat (4), and the bottom side edge of the shielding wall panel (412) being connected to the equipment cabin (8).

6. The chassis according to claim 5, characterized in that The inner side wall (42) comprises an inner side wall body (421) and a support beam (422); The support beam (422) comprises a crossbeam portion (4221) and a longitudinal beam portion (4222), the top side of the longitudinal beam portion (4222) contacts and is connected to the crossbeam portion (4221), and the side of the crossbeam portion (4221) away from the outer side wall (41) is connected to the floor (1); The inner wall body (421) is a flat beam body, the bottom side of the inner wall body (421) is connected to the bottom side of the hanging wall panel (411), and the top side of the inner wall body (421) extends toward a side away from the outer wall (41) and is connected to the bottom side of the longitudinal beam portion (4222).

7. The chassis according to claim 6, wherein: The hoisting wall panel (411) is an obtuse-angle bending structure. The bottom of the hoisting wall panel (411) is a transverse folded wall (4111), and the top is a longitudinal folded wall (4113). The top side of the longitudinal folded wall (4113) is connected to the side beam (2). The side of the transverse folded wall (4111) away from the longitudinal folded wall (4113) is connected to the inner wall body (421). The top of the transverse folded wall (4111) is provided with an escape ladder joint (4112). The escape ladder joint (4112) is a C-shaped material and is used for installing the escape ladder (3).

8. The chassis according to claim 5, wherein: The reinforced crossbeam (5) comprises a crossbeam body (51) and two reinforced oblique beams (52); The crossbeam body (51) is a linear structure, and both ends of the crossbeam body (51) are connected to the side beams (2) opposite to the base frame body; The two reinforcing oblique beams (52) are symmetrically arranged at both ends of the crossbeam body (51), and the ends of the two reinforcing oblique beams (52) that are separated from each other are connected to the outer side wall (41) of the mounting seat (4) that is arranged opposite to each other.

9. The chassis according to claim 5, characterized in that The bottom sides of the adjacent side beam sections (21) close to the end structures are provided with mounting grooves, and the tops of both ends of the hanging wall panels (411) are embedded in and clamped in the mounting grooves of the adjacent side beam sections (21); The bottom side and the top side of the same end of the outer side wall (41) pass through an arc-shaped waist structure, and the top structure length of the outer side wall (41) is greater than the bottom structure length of the outer side wall (41).

10. The chassis according to claim 7, wherein: The hanging wall panel (411), the shielding wall panel (412), the inner wall body (421), and the support beam (422) are all hollow profiles formed by pultrusion; Both ends of the mounting seat (4) are provided with sealing plates (413) to close the openings at both ends of the mounting seat (4); The top side of the hanging wall panel (411) has a side beam joint (4114), and the side beam joint (4114) overlaps and fits with the side beam section (21); the bottom side of the shielding wall panel (412) has an equipment cabin joint (4121) for installing the equipment cabin (8); the side of the cross beam portion (4221) away from the outer side wall (41) has a floor joint (4223), and the floor joint (4223) overlaps and fits with the floor (1); The longitudinal beam portion (4222) and the inner side wall body (421) both have a first assembly joint (44), and the longitudinal beam portion (4222) and the inner side wall body (421) are connected via the first assembly joint (44) in an overlapping manner; The inner wall body (421) and the hanging wall plate (411) both have a second mounting joint (45), and the inner wall body (421) and the hanging wall plate (411) are connected via the second mounting joint (45) in an overlapping manner; The shielding wall panel (412) and the hanging wall panel (411) both have a third mounting joint (46), and the shielding wall panel (412) and the hanging wall panel (411) are connected via the overlapped third mounting joint (46).

11. A vehicle body, characterized in that: The invention comprises the chassis described in any one of claims 1 to 10.

12. A rail vehicle, characterized in that: The vehicle body comprises the vehicle body as claimed in claim 11 above.

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