Patent Grant
11932288
The present application is a national stage of International Application No. PCT/CN2019/090808 filed on Jun. 12, 2019, which claims priority to Chinese Patent Application No. 201811593560.7, filed on Dec. 25, 2018. The disclosures of these applications are hereby incorporated by reference in their entirety.
The disclosure relates to the field of rail vehicle, and in particular to a double-deck rail vehicle and vehicle body thereof.
In recent years, with the rapid development of China's rail transit industry, rail vehicles have been exported to developed countries in Europe and America. In order to develop the North American market, it is necessary to design a vehicle body structure that meets American strength standards. The demand for rail vehicle has gradually has transferred from single-deck vehicle to double-deck vehicle in some countries, such as United States, Canada and other. However, vehicle body structures of double-deck rail vehicles in the related art do not meet American strength standard requirements.
Embodiments of the present application provide a double-deck rail vehicle and a vehicle body thereof. In the vehicle body, a reinforcing center sill capable of increasing the connection strength is provided between an end chassis and a lower chassis, and an lateral chassis side beam in one-piece structure is adopted. Therefore, the structural strength, rigidity, and compression resistance of the vehicle body can be enhanced, so that the safety of the double-deck rail vehicle can be improved, and the problem in the related art that double-deck vehicle bodies do not meet American strength standard requirements can be solved.
According to a first aspect of the embodiments of the present application, a vehicle body is provided, which may include a chassis, a front end wall, a rear end wall, two side walls, and a roof. The chassis may include:
In some examples, each of the first end chassis and the second end chassis comprises a front end beam, a rear end beam, two end chassis side beams, a sleeper beam and a traction beam. A force transmission beam is welded between the sleeper beam and the rear end beam and is located at a position corresponding to the traction beam.
The end chassis side beam comprises a U-shaped steel with an opening facing the traction beam, and a side beam closure plate welded to the opening. Each of the U-shaped steel and the side beam closure plate is formed in one piece.
An end, away from the traction beam, of the end chassis side beam has a variable cross-section structure which cause the cross-sectional area of the end chassis side beam to be gradually reduced in a direction from the front end beam to the rear end beam.
In some examples, floor cross beams are welded between the end chassis side beam and the traction beam and between the end chassis side beam and the force transmission beam. A stainless steel floor is welded on a side, away from the traction beam, of the floor cross beam. A floor longitudinal beam is welded on the surface of a side, facing the traction beam, of the stainless steel floor, to improve the rigidity of the stainless steel floor.
In some examples, the front end wall comprises two front anti-collision pillars, two front end corner pillars, a front end upper cross beam, a front end lower cross beam and a front end wall plate. The two front anti-collision pillars and the two front end corner pillars extend parallel to one another in a vertical direction. The two front anti-collision pillars are located between the two front end corner pillars. the front end upper cross beam and the front end lower cross beam extend parallel to one another in a horizontal direction and are perpendicular to the two front anti-collision pillars and the two front end corner pillars. A plurality of front end wall connecting beams are fixedly connected between the front anti-collision pillar and the front end corner pillar.
The rear end wall may include two rear anti-collision pillars, two rear end corner pillars, a rear end upper cross beam, a rear end lower cross beam and a rear end wall plate. The two rear anti-collision pillars and the two rear end corner pillars may extend parallel to one another in a vertical direction. The two rear anti-collision pillars may be located between the two rear end corner pillars. The rear end upper cross beam and the rear end lower cross beam may extend parallel to one another in a horizontal direction, and may be perpendicular to the two rear anti-collision pillars and the two rear end corner pillars. A plurality of rear end wall connecting beams may be fixedly connected between the rear anti-collision pillar and the rear end corner pillar.
In some examples, the front end lower cross beam of the front end wall may be welded with the traction beam at one end of the chassis and the end chassis side beam through a full penetration weld, and a plurality of front end connecting beams may be welded between the front end lower cross beam and the front end beam at one end of the chassis.
The rear end lower cross beam of the rear end wall may be welded with the traction beam at the other end of the chassis through a full penetration weld, and a passenger step may be welded between the rear end lower cross beam and the front end beam at the other end of the chassis.
In some examples, a step connecting beam for adjusting a connection position may be further arranged between the passenger step, the rear end lower cross beam and the front end beam.
In some examples, the passenger step may include a support plate and a step board welded to one another, the step board may be made of a stainless steel plate having a thickness of 3 mm, and the support plate may be made of a stainless steel plate having a thickness of 4 mm.
In some examples, a top of each of the two front anti-collision pillars and the two rear anti-collision pillars may be provided with a lifting lug.
In some examples, the traction beam may include a traction beam bottom plate, a traction beam cover plate, a first vertical plate, a second vertical plate, a coupler panel, a horizontal support plate, and a vertical support plate.
The traction beam cover plate and the traction beam bottom plate may be arranged to one another in a vertical direction.
The first vertical plate and the second vertical plate may be arranged to one another and may be welded between the traction beam bottom plate and the traction beam cover plate respectively.
The coupler panel may be arranged in the vertical direction, with one side surface of the coupler panel for installing a coupler, the other side surface for installing the horizontal support plate. The coupler panel may be welded with the traction beam bottom plate, the traction beam cover plate, the first vertical plate and the second vertical plate respectively. An installation space may be formed on one side of the coupler panel where the coupler is installed, and a cavity may be formed on the other side, away from the coupler, of the coupler panel.
The horizontal support plate may be located in the cavity, and may be welded with the coupler panel, the first vertical plate and the second vertical plate.
The vertical support plate may be located in the cavity, and may be welded with the traction beam cover plate, the first vertical plate and the second vertical plate.
In some examples, there may be at least two horizontal support plates arranged parallel to one another. The lengths of the horizontal support plates may gradually change in a direction from the traction beam cover plate to the traction beam bottom plate.
In some examples, the side wall may include a side wall frame, a window assembly, and a side wall plate. An outer side surface of the side wall plate may be a smooth wire drawing plate. The side wall plate may be fixedly connected to the side wall frame through a spot welding process.
The side wall may be fixedly connected to the front end wall and the rear end wall through a connecting plate.
In some examples, the roof may include a central roof and connecting structures arranged at two ends of the central roof. The connecting structures are configured for connecting the central roof with the front end wall and the rear end wall.
The central roof may include a roof frame formed by a longitudinal beam and a roof bending beam, and a top plate connected to the roof frame by spot welding.
The connecting structure may include a roof connecting beam and a roof cover plate fixedly connected to a top of the roof connecting beam.
In some examples, the roof may be made of a stainless steel material, and the top plate may be made of a stainless steel corrugated plate having a thickness of 4 mm.
In some examples, the roof bending beam may be welded with an upper side beam of the side wall, and the top plate and the traction beam cover plate may be welded with the side wall plate respectively.
In some examples, a second deck floor fixedly connected to the side wall may be further included. The second deck floor may be configured to divide the vehicle body into a double-deck structure.
In some examples, the second deck floor may be formed by splicing and welding aluminum profiles.
In some examples, the second deck floor may be riveted to the side wall frame, and an anti-corrosion structure may be arranged between the second deck floor and the side wall frame.
In some examples, the second deck floor may be riveted to the side wall frame through Huck rivets, and the anti-corrosion structure may be an anti-corrosion liner plate for preventing an electrochemical reaction between the second deck floor and the side wall frame.
In some examples, the lower chassis may be provided with two chassis center sills arranged in parallel.
The chassis may be provided with two first reinforcing center sills arranged in parallel and two second reinforcing center sills arranged in parallel. The first reinforcing center sills may be connected to the chassis center sills in a one-to-one correspondence manner. The second reinforcing center sills may be connected to the chassis center sills in a one-to-one correspondence manner.
According to a second aspect of the embodiments of the present application, a double-deck rail vehicle is provided, which may include any one vehicle body as provided in the above technical solution.
By adopting the double-deck rail vehicle and the vehicle body thereof provided in the embodiments of the present application, the reinforcing center sill capable of increasing the connection strength is added between the end chassis and the lower chassis in the vehicle body, and the lateral chassis side beam in one-piece structure is adopted. Meanwhile, the vehicle body is made of a stainless steel material. Therefore, the structural strength, rigidity, and compression resistance of the vehicle body can be enhanced, so that the safety of the double-deck rail vehicle can be improved, and the problem in the related art that vehicle bodies cannot meet American strength standard requirements can be solved.
The accompanying drawings described herein serve to provide a further understanding of the present application, and constitute a part of the present application. The exemplary embodiments of the present application and the descriptions thereof serve to explain the present application, but do not unduly limit the present application. In the drawings:
In the process of implementing the present application, the skilled person has found that there is still a gap in the related art in the research on a double-deck vehicle body structure meeting American standards.
Aiming at the above problem, the embodiments of the present application provide a double-deck rail vehicle and a vehicle body thereof. In the vehicle body, a reinforcing center sill capable of increasing the connection strength is supplemented between an end chassis and a lower chassis, and an integrally-formed lateral chassis side beam is adopted. Therefore, the structural strength, rigidity, and compression resistance of the vehicle body can be enhanced, so that the safety of the double-deck rail vehicle can be improved.
To further clarify the technical solutions and advantages of the embodiments of the present application, exemplary embodiments of the present application will now be described in further detail with reference to the accompanying drawings. It is apparent that the described embodiments are only a part of the embodiments of the present application and are not exhaustive of all embodiments. It is to be noted that the embodiments of the present application and the features in the embodiments may be combined without conflict.
An embodiment of the present application provides a vehicle body 1. As shown in
The lower chassis 111 is provided with a chassis center sill 1111 extending in a length direction of the vehicle body 1. In the present embodiment, for example, the lower chassis 111 is provided with two parallel chassis center sills 1111 in
The first end chassis 112 is fixedly connected to one end of the chassis center sill 1111 through a first reinforcing center sill 113. As shown in
The first closure plate 114 is fixedly connected between the first end chassis 112 and the lower chassis 111, and is configured to seal a gap between the first end chassis 112 and the lower chassis 111. As shown in
The second end chassis 115 is opposite to the first end chassis 112, and is fixedly connected to the other end of the chassis center sill 1111 through a second reinforcing center sill 117. As shown in
The second closure plate 116 is fixedly connected between the second end chassis 115 and the lower chassis 111, and is configured to seal a gap between the second end chassis 115 and the lower chassis 111. As shown in
The first lateral chassis 118 includes a first lateral chassis side beam 1181 formed in one piece. The first lateral chassis 118 is fixedly connected to the first end chassis 112 and the second end chassis 115 through the first lateral chassis side beam 1181. Both the first lateral chassis 118 and the second lateral chassis 119 are fixedly connected to the lower chassis 111, the first end chassis 112 and the second end chassis 115.
The second lateral chassis 119 is arranged opposite to the first lateral chassis 118. The second lateral chassis 119 includes a second lateral chassis side beam 1191 formed in one piece. The second lateral chassis 119 is fixedly connected to the first end chassis 112 and the second end chassis 115 through the second lateral chassis side beam 1191.
In the chassis 11 of the vehicle body 1, the first end chassis 112 is fixedly connected to one end of each chassis center sill 1111 through the respective first reinforcing center sill 113; the second end chassis 115 is fixedly connected to the other end of the chassis center sill 1111 through the second reinforcing center sills 117; the first closure plate 114 is fixedly connected between the first end chassis 112 and the lower chassis 111, the second closure plate 116 is fixedly connected between the second end chassis 115 and the lower chassis 111; and the gaps between the first end chassis 112 and the lower chassis 111 and between the second end chassis 115 and the lower chassis 111 are sealed through the closure plates. Meanwhile, each of the first lateral chassis side beam 1181 of the first chassis 118 and the second lateral chassis side beam 1191 of the second lateral chassis 119 is formed in one piece. The structural strength and rigidity of the first lateral chassis 118 and the second lateral chassis 119 can be improved by the first lateral chassis side beam 1181 and the second lateral chassis side beam 1191 in one-piece structure, so that the compression resistance of the chassis 11 is improved, and the chassis 11 can bear heavy loads. Due to the above structure, the structural strength, rigidity and compression resistance of the chassis 11 of the vehicle body 1 and thus the vehicle body 1 can be improved, the vehicle body 1 can meet American standards, thereby improving the safety and reliability of a double-deck rail vehicle.
In a specific implementation, as shown in
The end chassis side beam 1123 includes U-shaped steel with an opening facing the traction beam 1125 and a side beam closure plate welded to the opening. Each of U-shaped steel and the side beam closure plate is formed in one piece. Due to the U-shaped steel and the side beam closure plate, the cross section of the end chassis side beam 1123 forms a rectangular structure, so that the structural strength and rigidity of the end chassis side beam 1123 are improved, and the bearing capacity of the end chassis side beam 1123 is further improved. Meanwhile, each of the U-shaped steel and the side beam closure plate which form the end chassis side beam 1123 is in one piece structure. Since each of the U-shaped steel and the side beam closure plate is in one piece structure, welding can be avoided, welding workload is reduced, and various parameters such as flatness of the end chassis side beam 1123 are also improved.
An end, away from the traction beam 1125, of the end chassis side beam 1123 has a variable cross-section structure, and the variable cross-section structure cause the cross-sectional area of the end chassis side beam 1123 to be gradually reduced in a direction from the front end beam 1121 to the rear end beam 1122. An end, close to the rear end beam 1122, of the end chassis side beam 1123 has a variable cross-section structure, i.e., the cross-sectional area of the end chassis side beam 1123 at this portion is gradually reduced in a direction from the front end beam 1121 to the rear end beam 1122, so that when the end chassis is connected to the lower chassis 111, the stress concentration between the end chassis side beam 1123 and the chassis side beam in a compression working condition of the vehicle can be reduced.
A force transmission beam 1126 is welded between the sleeper beam 1124 and the rear end beam 1122 of the end chassis and is located at a position corresponding to the traction beam 1125. The force transmission beam 1126 is opposite to the chassis center sill 1111 of the lower chassis 111, and the load borne by the traction beam 1125 can be transmitted to the lower chassis 111 through the force transmission beam 1126. Each of the U-shaped steel and the side beam closure plate of the end chassis side beam 1123 is in one piece structure, and one end of the end chassis side beam 1123 has the variable cross-section structure, so that the structural strength and rigidity of the end chassis side beam 1123 are improved, heavy loads can be borne and transmitted. Then the heavy loads borne by the traction beam 1125 and the sleeper beam 1124 can be transmitted simultaneously by the force transmission beam 1126 and the end chassis side beam 1123, and the compression stress borne by the traction beam 1125 can be dispersed. In addition, gradual transition can be realized by the connection of the variable cross-section structure of the end chassis side beam 1123 with the lower chassis side beam, so that stress concentration is avoided, the force transmission effect is great, welding workload in the assembly process can be reduced, the flatness of the end chassis side beam 1123 can be guaranteed, and the process performance is excellent. Therefore, the end chassis can meet the requirements of compression resistance and heavy loads.
As shown in
In the end chassis, the installation of stainless steel floor 1128 is facilitated by the floor cross beam 1127 welded between the end chassis side beam 1123 and the traction beam 1125, and between the end chassis side beam and the force transmission beam 1126. Meanwhile, the structural strength and rigidity of the end chassis are further improved through the floor cross beam 1127 and the stainless steel floor 1128. The strength and rigidity of the stainless steel floor 1128 can be improved through the floor longitudinal beam 1129 welded to one side of the stainless steel floor 1128.
As shown in
The rear end wall 13 includes two rear anti-collision pillars, two rear end corner pillars, a rear end upper cross beam, a rear end lower cross beam, and a rear end wall plate. The two rear anti-collision pillars and the two rear end corner pillars extend parallel to each other in a vertical direction. The two rear anti-collision pillars are located between the two rear end corner pillars. The rear end upper cross beam and the rear end lower cross beam extend parallel to each other in a horizontal direction, and are perpendicular to with the two rear anti-collision pillars and the two rear end corner pillars. A plurality of connecting beams of the rear end wall 13 are fixedly connected between the rear anti-collision pillar and the rear end corner pillar.
By arranging the anti-collision pillars with higher structural strength on the front end wall 12 and the rear end wall 13, the structural strength of the vehicle body 1 can be improved while the structural strength of the end walls is improved, and the deformation and damage of the vehicle after impact can be reduced, thereby guaranteeing the safety of personnel in the vehicle.
In order to improve the connection strength between the end walls and the chassis 11, the front end lower cross beam 124 of the front end wall 12 is welded with the traction beam 1125 at one end of the chassis 11 and with the end chassis side beam 1123 through a full penetration weld, and a plurality of front end connecting beams are welded between the front end lower cross beam 124 and the front end beam 1121 at one end of the chassis 11.
The rear end lower cross beam of the rear end wall 13 is welded with the traction beam 1125 at the other end of the chassis 11 through a full penetration weld, and a passenger step is welded between the rear end lower cross beam and the front end beam 1121 at the other end of the chassis 11. As shown in
As shown in
The lifting lugs 126 arranged on the end walls can facilitate lifting of the vehicle body 1 so as to facilitate lifting of the vehicle body 1 during rescue or maintenance of the vehicle.
As shown in
The traction beam cover plate 11252 and the traction beam bottom plate 11251 are arranged opposite to one another in a vertical direction.
The first vertical plate 11253 and the second vertical plate 11254 are arranged opposite to one another and are welded between the traction beam bottom plate 11251 and the traction beam cover plate 11252 respectively.
The coupler panel 11255 is arranged in the vertical direction, with one side surface for installing a coupler, and the other side surface for installing the horizontal support plate 11256. The coupler panel 11255 is welded with the traction beam bottom plate 11251, the traction beam cover plate 11252, the first vertical plate 11253, and the second vertical plate 11254 respectively. An installation space is formed on the side of the coupler panel 11255 where the coupler is installed, and a cavity is formed on the other side, away from the coupler, of the coupler panel 11255.
The horizontal support plate 11256 is located in the cavity, and is welded with the coupler panel 11255, the first vertical plate 11253 and the second vertical plate 11254.
The vertical support plate 11257 is located in the cavity, and is welded with the traction beam cover plate 11252, the first vertical plate 11253, and the second vertical plate 11254.
The bottom plate 11251, the cover plate 11252, the first vertical plate 11253, and the second vertical plate 11254 of the traction beam 1125 are welded to one another to form a rectangular chamber. The coupler panel 11255 is arranged in the chamber, and the periphery of the coupler panel 11255 is welded to the bottom plate 11251, the cover plate 11252, the first vertical plate 11253 and the second vertical plate 11254. As such, an installation space for installing a coupler is formed on one side of the coupler panel 11255, and a cavity is formed on a side, away from the coupler, of the coupler panel 11255, so that the traction beam 1125 forms a box structure on the rear side of the coupler panel 112545. In addition, the horizontal support plate 11256 and the vertical support plate 11257 are welded in the cavity. Due to the horizontal support plate 11256 welded together with the coupler panel 11255, the first vertical plate 11253, and the second vertical plate 11254, the structural strength and rigidity of the traction beam 1125 can be enhanced, and the compression resistance of the traction beam 1125 in the horizontal direction can be improved. Due to the vertical support plate 11257 welded together with the cover plate 11252, the first vertical plate 11253, and the second vertical plate 11254, the structural strength and rigidity of the traction beam 1125 can be further enhanced, and the compression resistance of the traction beam 1125 in the vertical direction can be improved. Therefore, the traction beam 1125 has higher structural strength and rigidity, the compression resistance can be enhanced, and the vehicle body 1 meets the bearing requirements of a heavy compression working condition (e.g. a compression working condition of 3560 kN).
In the structure of the traction beam 1125, as shown in
By means of the at least two horizontal support plates 11256 arranged in the cavity of the traction beam 1125, the structural strength and rigidity of the coupler panel 11255 can be enhanced while the acting force of the coupler on the coupler panel 11255 can be dispersed and transmitted to the first vertical plate 11253 and the second vertical plate 11254 through the horizontal support plates 11256. Therefore, by the arrangement of the additional horizontal support plates 11256, the structural strength and rigidity of the traction beam 1125 can be further improved, the acting force of the coupler can be quickly dispersed and transmitted, stress concentration is avoided, and the compression resistance of the traction beam 1125 is improved.
In the structure of the vehicle body 1, as shown in
In the structure of the vehicle body 1, as shown in
The central roof 151 includes a roof frame formed by a longitudinal beam 1511 and a roof bending beam 1512, and a top plate 1513 connected to the roof frame by spot welding. Both the longitudinal beam 1511 and the roof bending beam 1512 may be made of a stainless steel material adopting the 301L-1/8H\ASTM A666-2015 standard. The top plate 1513 may be made of a stainless steel corrugated plate having a thickness of 4 mm. The connecting structure 152 includes a roof connecting beam 1521 and a roof cover plate 1522 fixedly connected to the top of the roof connecting beam 1521.
In the roof 15, a roof frame is formed by a roof bending beam 1512 and a longitudinal beam 1511, so that the structural strength and rigidity of the roof 15 can be enhanced. Meanwhile, the top plate 1513 is made of a stainless steel corrugated plate, so that the structural strength of the roof 15 can be further improved.
In a specific connection process of the roof 15, the roof bending beam 1512 is welded with an upper side beam of the side wall 14 through a fillet weld, and the top plate 1513 and the traction beam cover plate 11252 are welded with the side wall plate respectively. The roof bending beam 1512 may be a zigzag beam. In order to realize double-sided welding of the roof bending beam 1512 and the upper side beam of the side wall 14, a part of the flanging of the roof bending beam 1512 may be cut off, or double-sided welding may be performed by adding a connecting plate. Meanwhile, the difficulty in controlling an assembly gap between the roof bending beam 1512 and the upper side beam of the side wall 14 can be reduced.
The vehicle body 1 further includes a second deck floor 16 fixedly connected to the side wall 14. The second deck floor 16 is configured to divide the vehicle body 1 into a double-deck structure. The second deck floor 16 is formed by splicing and welding aluminum profiles. The second deck floor 16 may be riveted to the side wall frame through Huck rivets, and an anti-corrosion structure is arranged between the second deck floor 16 and the side wall frame. The anti-corrosion structure is an anti-corrosion liner plate for preventing an electrochemical reaction between the second deck floor 16 and the side wall frame. The anti-corrosion liner plate may be made of plastics, rubber, and other materials.
On the basis of the various embodiments of the vehicle body 1, as shown in
The two chassis center sills 1111 parallel to one another are arranged in the lower chassis 111, and the first end chassis 112 is fixedly connected to the chassis center sills 1111 through the first reinforcing center sills 113 corresponding to the chassis center sills 1111 one by one, so that the first end chassis 112 is fixedly connected to the lower chassis 111. Meanwhile, the second end chassis 115 is fixedly connected to the chassis center sills 1111 through the second reinforcing center sills 117 corresponding to the chassis center sills 1111 one by one, so that the second end chassis 115 is fixedly connected to the lower chassis 111. Since the structural strength of the chassis center sill 1111, the first reinforcing center sill 113, and the second reinforcing center sill 117 are high, the first reinforcing center sill 113 and the second reinforcing center sill 117 are adopted to enable the two end chasses to be installed on the lower chassis 111, so that the connection strength between the end chassis and the lower chassis 111 can be improved. Meanwhile, the arrangement of reinforced structures can be reduced, and uniform stress of the chassis center sill 1111 can be realized.
An embodiment of the present application also provides a double-deck rail vehicle. The double-deck rail vehicle includes the vehicle body 1 as provided in any of the above embodiments.
By adopting the double-deck rail vehicle and the vehicle body 1 thereof provided in the embodiments of the present application, the reinforcing center sill capable of increasing the connection strength is supplemented between the end chassis and the lower chassis 111 in the vehicle body 1, and the integrally-formed lateral chassis side beam is adopted. Therefore, the structural strength, rigidity, and compression resistance of the vehicle body 1 can be enhanced, so that the safety of the double-deck rail vehicle can be improved, and the problem in the related art that vehicle bodies cannot meet American strength standard requirements can be solved.
While some alternative embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to the embodiments once knowing a basic creativity concept. Therefore, the appended claims are intended to be interpreted as including the alternative embodiments and all the changes and modifications falling within the scope of the present application.
It is apparent that those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if such modifications and variations of the present application fall within the scope of the appended claims and their equivalents, the present application is also intended to cover the modifications and variations.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201811593560.7 | Dec 2018 | CN | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2019/090808 | 6/12/2019 | WO |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2020/133935 | 7/2/2020 | WO | A |
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| Number | Date | Country | |
|---|---|---|---|
| 20220111876 A1 | Apr 2022 | US |
