Vehicle body underframe, vehicle body and railway vehicle

Abstract

The utility model relates to the field of rail vehicles provides a car body chassis, car body and rail vehicle, and the car body chassis includes: side beam, side beam includes: first platform part, and the upper surface of first platform part is equipped with first backing strip, inside vertical reinforcement, inside vertical reinforcement is connected with the side edge of first platform part near floor, and at least one of first platform part and inside vertical reinforcement is equipped with first mounting hole, and first mounting hole is suitable for equipment mounting part to wear and set with first backing strip connection, the utility model replaces material stacking or welding structure reinforcement with the optimization of side beam's cavity structure, solved the problem that traditional structure is forced to increase weight, high cost under the bearing, realized light weight structure design, and first backing strip further improved the rigidity of side beam and equipment mounting part connection position, and the structure is safe and reliable.

Description

Technical Field

[0001] This utility model relates to the field of rail vehicles, and provides a car body underframe, car body and rail vehicle. Background Technology

[0002] As a key core component of rail vehicle systems, the car body structure not only has load-bearing and protective functions, but also needs to provide reliable installation interfaces for critical components such as traction systems, braking systems, and electrical equipment. To avoid encroaching on passenger space and improve ride comfort, the industry generally places electrical equipment in the lower part of the car body. While this space planning optimizes the in-car experience, it places stringent requirements on the compactness, load-bearing capacity, and interface compatibility of the undercarriage structure: the undercarriage space is limited, yet it needs to accommodate dozens of different types of equipment, forcing the structural design to be highly efficient and compact.

[0003] The types and specifications of under-vehicle equipment are becoming increasingly complex. Some heavy equipment (such as traction transformers and air conditioning units) requires high-strength installation interfaces to ensure the safety of the installation structure; other equipment (such as battery boxes) requires flexible installation methods due to frequent maintenance needs or the need for minor adjustments to the installation position. The vast differences in weight (from tens of kilograms to several tons), size (from small modules to large units), and interface dimensions (bolt hole positions, installation references) among different equipment place higher demands on the compatibility of the installation structure. The diverse installation requirements of the equipment necessitate the design of separate support brackets and sliding tracks for traditional side beam structures, resulting in structural redundancy and cluttered interfaces.

[0004] Against the backdrop of diversified rail vehicle equipment, intensive installation space, and increased requirements for operational reliability, traditional edge beam structures suffer from pain points such as incompatibility with the mixed installation requirements of support and chute, complex structure, low reliability, and insufficient efficiency. Summary of the Invention

[0005] This utility model provides a chassis frame, a car body, and a rail vehicle to address one of the deficiencies in related technologies. This utility model replaces material stacking or welding structure reinforcement with an optimized cavity structure for the side beams, solving the problem of forced weight increase and high cost in traditional structures for load-bearing purposes, and achieving a lightweight structural design. The first pad further improves the rigidity of the connection position between the side beams and the equipment installation components, making the structure safe and reliable.

[0006] This utility model provides a vehicle chassis frame, including:

[0007] Side beam, the side beam comprising:

[0008] A first platform section, the upper surface of which is provided with a first pad;

[0009] Inner vertical rib, the inner vertical rib is connected to the edge of the first platform near the floor;

[0010] At least one of the first platform section and the inner vertical rib is provided with a first mounting hole, which is suitable for the equipment mounting component to pass through and connect with the first pad.

[0011] According to one embodiment of the present invention, the side beam further includes:

[0012] The intermediate vertical rib is connected to the edge of the first platform portion away from the floor.

[0013] The second platform section is connected to the side of the intermediate vertical rib facing away from the first platform section. The second platform section is provided with a second mounting hole, which is suitable for equipment mounting components to pass through and connect to the second platform section.

[0014] According to one embodiment of the present invention, the second mounting hole extends along the longitudinal direction of the vehicle body, and the second platform portion has a notch at its end in the longitudinal direction of the vehicle body, the notch communicating with the second mounting hole.

[0015] According to one embodiment of the present invention, the upper surface of the second platform portion is further provided with a partition, which surrounds the second mounting hole to form a sliding groove.

[0016] According to one embodiment of the present invention, the upper surface of the second platform portion is provided with a second pad, and the second mounting hole is adapted for the equipment mounting component to pass through and connect with the second pad.

[0017] According to one embodiment of the present invention, the side beam further includes:

[0018] Outer vertical rib, the outer vertical rib being connected to the edge of the second platform portion away from the floor;

[0019] The inclined rib is connected between the outer vertical rib and the middle vertical rib, and the inclined rib is inclined at a set angle to the second platform portion.

[0020] According to one embodiment of the present invention, the first platform portion and the second platform portion are located on the same horizontal plane.

[0021] According to one embodiment of the present invention, it further includes:

[0022] A lifting base, located below the first platform portion or the second platform portion, is adapted to be connected to equipment mounting components;

[0023] A lifting bolt is provided in the first mounting hole or the second mounting hole, and the first platform part or the second platform part is connected to the lifting base through the lifting bolt.

[0024] This utility model also provides a vehicle body, including the vehicle body chassis as described above.

[0025] This utility model also provides a rail vehicle, including the chassis frame as described above or the car body as described above.

[0026] The vehicle chassis of this utility model mainly improves the structure of the first platform portion and the inner vertical rib of the side beam. The side of the side beam closer to the floor is the inner side, and the side farther from the floor is the outer side. The first platform portion extends horizontally along the longitudinal direction of the vehicle body. The inner side of the first platform portion is connected to the vertically arranged inner vertical rib, forming a frame structure of the side beam on the inner side through the first platform portion and the inner vertical rib. A first pad is provided on the upper surface of the first platform portion. The extension direction of the first pad is the same as the extension direction of the first platform portion. Under-vehicle equipment can be hoisted or supported by the two side beams. Therefore, a first mounting hole is provided on at least one of the inner vertical rib and the first platform portion as a hoisting interface or support interface. The equipment mounting components of the under-vehicle equipment pass through the first mounting hole and connect to the first pad.

[0027] To address the diverse installation methods for under-vehicle equipment in rail transit vehicles, this invention proposes an integrated hoisting and support-mounting side beam structure and equipment installation method, resolving issues such as diverse installation methods, complex structural forms, and insufficient reliability. The side beam structure employs a multi-functional cavity design formed by aluminum alloy extrusion, including a first mounting hole as a hoisting and support interface, significantly reducing the number of equipment installation interface types. During under-vehicle equipment installation, the optimal installation method is selected based on equipment type; heavy equipment is fixed using support, while heavy equipment with vibration sources is fixed using hoisting, further realizing modular design and unified interface management. This invention replaces material stacking or welding structures with an optimized cavity structure of the side beam for reinforcement, solving the problem of forced weight increase and high cost in traditional structures for load-bearing, achieving a lightweight structural design. The first pad further improves the rigidity of the connection between the side beam and the equipment installation components, ensuring structural safety and reliability. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is one of the structural schematic diagrams of the floor structure of the vehicle chassis provided in this embodiment of the utility model;

[0030] Figure 2This is the second schematic diagram of the floor structure of the vehicle chassis provided in this embodiment of the utility model;

[0031] Figure 3 This is one of the structural schematic diagrams of the side beam of the vehicle chassis provided in this embodiment of the utility model;

[0032] Figure 4 This is the second schematic diagram of the side beam of the vehicle chassis provided in this embodiment of the utility model;

[0033] Figure 5 This is the third schematic diagram of the side beam of the vehicle chassis provided in this embodiment of the utility model;

[0034] Figure 6 This is the fourth structural schematic diagram of the side beam of the vehicle chassis provided in this embodiment of the utility model;

[0035] Figure 7 This is the fifth schematic diagram of the side beam of the vehicle chassis provided in this embodiment of the utility model;

[0036] Figure 8 This is the sixth schematic diagram of the side beam of the vehicle chassis provided in this embodiment of the utility model;

[0037] Figure 9 yes Figure 8 A magnified view of part A in the middle;

[0038] Figure 10 This is a schematic diagram of the vehicle body provided in an embodiment of the present utility model.

[0039] Figure label:

[0040] 100. Interior flooring; 110. First air duct; 120. Connecting beam; 121. First thermal insulation component; 130. Second thermal insulation component;

[0041] 200. Vehicle body floor; 210. Second air duct;

[0042] 300. Air supply device; 310. Air inlet duct; 311. First air inlet; 312. Second air inlet; 320. Air outlet duct; 321. First air outlet; 322. Second air outlet;

[0043] 400. Edge beam; 410. First platform section; 411. First pad plate; 420. Inner vertical reinforcement; 430. First mounting hole; 440. Middle vertical reinforcement; 450. Second platform section; 451. Partition plate; 452. Slide groove; 453. Second pad plate; 454. Notch; 460. Second mounting hole; 470. Outer vertical reinforcement; 480. Diagonal reinforcement;

[0044] 500, lifting base; 600, lifting bolts;

[0045] 700. Undercarriage equipment; 710. Equipment installation components; 711. Support beam;

[0046] 810. Roof; 820. Side wall. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0048] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0049] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0050] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0051] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0052] Due to the limitations of vehicle cross-sectional dimensions, the floor structure restricts the layout of air ducts, affecting the cooling effect of air-cooled equipment and easily leading to the risk of equipment overheating or even burning out.

[0053] like Figure 1 and Figure 2 As shown, this utility model embodiment provides a vehicle chassis, including an interior floor 100, a vehicle floor 200, and an air supply device 300. The vehicle floor 200 is located below the interior floor 100, and a first air duct 110 is provided between the vehicle floor 200 and the interior floor 100; the air supply device 300 is connected to the first air duct 110.

[0054] The vehicle chassis of this utility model embodiment mainly consists of an interior floor 100, a vehicle floor 200, and an air supply device 300. The interior floor 100 and the vehicle floor 200 are arranged parallel to each other, and the interior floor 100 is located below the vehicle floor 200, forming the floor structure of the vehicle chassis. A certain distance is left between the interior floor 100 and the vehicle floor 200, and this distance space forms the first air duct 110. The air supply device 300 is connected to the first air duct 110 to supply cooling air to the first air duct 110.

[0055] The space between the interior floor 100 and the vehicle body floor 200 is used as the first air duct 110, which does not occupy the under-vehicle space and solves the problem of the vehicle floor structure restricting the air duct layout and affecting motor cooling. The internal cavity of the profile is designed as a ventilation channel for equipment cooling air, which can naturally form an air duct and precisely guide airflow, perfectly adapting to the installation environment with limited space. This solves the problem that the traditional vehicle body chassis is limited by the cross-sectional dimensions of the vehicle, and the floor structure restricts the air duct layout, affecting the air supply and cooling effect of the equipment, and easily causing the risk of the equipment operating overheating or even burning out.

[0056] According to one embodiment of the present invention, a plurality of connecting beams 120 are provided between the interior floor 100 and the vehicle body floor 200, and a first air duct 110 is formed between two adjacent connecting beams 120.

[0057] In this embodiment, the connecting beam 120 extends along the longitudinal direction of the vehicle body. The upper end face of the connecting beam 120 is connected to the lower surface of the interior floor 100, and the lower end face of the connecting beam 120 is connected to the upper surface of the vehicle body floor 200. The connecting beams 120 can be evenly distributed in the transverse direction of the vehicle body to ensure uniformity of support and structural strength. Therefore, the space enclosed between two adjacent connecting beams 120 and the interior floor 100 and vehicle body floor 200 constitutes the first air duct 110. That is, multiple parallel first air ducts 110 can be formed between the interior floor 100 and the vehicle body floor 200. Thus, based on fixing the interior floor 100 and the vehicle body floor 200, the range of the first air duct 110 is further defined.

[0058] In other embodiments, the connecting beam 120 may also be set at a corresponding position to provide ventilation and cooling for a specific location.

[0059] According to one embodiment of the present invention, each connecting beam 120 has a first heat insulation component 121 on its surface facing the first air duct 110.

[0060] In this embodiment, each connecting beam 120 is provided with a first heat insulation component 121 on both sides, which is equivalent to forming a heat insulation layer on both sides of the first air duct 110 along the transverse direction of the vehicle body. This prevents the heat of the airflow in the first air duct 110 from dissipating to the outside, ensuring the heat dissipation quality of the air-cooled equipment and guaranteeing the operating environment inside the vehicle. At the same time, it can also protect the connecting beam 120 and prevent the connecting beam 120 from being affected by heat for a long time, thus protecting its structural strength.

[0061] The first heat insulation component 121 is made by coating heat insulation material on both the inner and outer sides of the first air duct 110.

[0062] According to one embodiment of the present invention, the surface of the interior floor 100 facing the first air duct 110 is provided with a second heat insulation component 130.

[0063] In this embodiment, a second heat insulation component 130 is provided on the lower surface of the interior floor 100 where it forms the first air duct 110. This is equivalent to forming a heat insulation layer on the side of the first air duct 110 near the passenger compartment along the longitudinal direction of the vehicle body. This prevents heat from the airflow in the first air duct 110 from dissipating into the passenger compartment and also prevents the temperature inside the passenger compartment from being transferred from the interior floor 100 to the first air duct 110, thus affecting the airflow temperature of the first air duct 110. This ensures the heat dissipation quality of the ventilation equipment and guarantees the operating environment inside the vehicle. Simultaneously, it also protects the interior floor 100, preventing it from being affected by prolonged heating and thus its structural strength. The second heat insulation component 130 works in conjunction with the first heat insulation component 121 to effectively create a heat insulation effect around the first air duct 110.

[0064] The second heat insulation component 130 is a heat insulation material coated on the lower surface of the interior floor.

[0065] According to one embodiment of the present invention, a second air duct 210 is provided in the vehicle floor 200, and the air supply device 300 is connected to the second air duct 210.

[0066] In this embodiment, the vehicle floor 200 is a thin-walled hollow aluminum profile with an upper plate, a lower plate, and an intermediate inclined plate connecting the upper plate and the lower plate. The intermediate inclined plate divides the cavity between the upper plate and the lower plate into multiple second air ducts 210. The air supply device 300 is connected to the second air ducts 210 to supply cooling air to the second air ducts 210. That is, the cavity of the vehicle floor 200 itself directly serves as the ventilation channel for the cooling air of the air supply device 300.

[0067] Due to air volume requirements, the second air duct 210 is a naturally formed air duct that precisely guides airflow. The overall air duct structure is formed by the structural gap between the interior floor and the vehicle body floor 200. There is no need to arrange complex air duct components. It can meet the heat dissipation requirements of the air-using equipment and make clever use of the limited space. It is perfectly adapted to the space-constrained installation environment and effectively solves the problems of traditional floor structure restricting air duct layout and easily causing equipment overheating. Using the cavity of the vehicle body floor 200 as the second air duct 210 does not occupy the space under the vehicle and solves the problem of vehicle floor structure restricting air duct layout and affecting motor cooling.

[0068] According to one embodiment of the present invention, the first air duct 110 has a first port and a second port at its two ends along the longitudinal direction of the vehicle body, and the air supply device 300 includes an air inlet pipe 310 and an air outlet pipe 320. The air inlet pipe 310 is provided with a first air inlet 311, which is connected to the first port; the air outlet pipe 320 is provided with a first air outlet 321, which is connected to the second port.

[0069] In this embodiment, the air supply device 300 mainly consists of an air inlet pipe 310 and an air outlet pipe 320. The air inlet pipe 310 consists of an air inlet main pipe and a first air inlet branch pipe, with the first air inlet branch pipe forming a first air inlet 311. The air outlet pipe 320 consists of an air outlet main pipe and a first air outlet branch pipe, with the first air outlet branch pipe forming a first air outlet 321. The two ends of the first air duct 110 along the longitudinal direction of the vehicle body are a first port and a second port, respectively. The first port is connected to the first air inlet 311, and the second port is connected to the first air outlet 321. Cooling air enters the first air inlet branch pipe from the air inlet main pipe, then enters the first air duct 110, exits the first air duct 110 in turn, enters the first air outlet branch pipe, and is then sent out from the air outlet main pipe.

[0070] According to one embodiment of the present invention, when a second air duct 210 is provided in the vehicle floor 200, the two ends of the second air duct 210 along the longitudinal direction of the vehicle body are a third port and a fourth port, respectively. The air inlet pipe 310 is provided with a second air inlet 312, which is connected to the third port. The air outlet pipe 320 is provided with a second air outlet 322, which is connected to the fourth port.

[0071] In this embodiment, the air inlet pipe 310 is composed of an air inlet main pipe, a first air inlet branch pipe, and a second air inlet branch pipe. The second air inlet branch pipe forms a second air inlet 312. The air outlet pipe 320 is composed of an air outlet main pipe, a first air outlet branch pipe, and a second air outlet branch pipe. The second air outlet branch pipe forms a second air outlet 322. The two ends of the second air duct 210 along the longitudinal direction of the vehicle body are a third port and a fourth port, respectively. The third port is connected to the second air inlet 312, and the fourth port is connected to the second air outlet 322. Cooling air enters the second air inlet branch pipe from the air inlet main pipe, then enters the second air duct 210, exits the second air duct 210 in turn, enters the second air outlet branch pipe, and is then sent out by the air outlet main pipe.

[0072] The air supply device 300 connects the first air duct 110 and the second air duct 210 in parallel, sharing an air inlet pipe 310 and an air outlet pipe 320. The upper plate of the vehicle body floor 200 is provided with ventilation holes. The main air inlet pipe 310 and the main air outlet pipe 320 both extend from the second air duct 210 into the first air duct 110 through the ventilation holes, so that the vehicle body underframe forms a ventilation path for motor air cooling.

[0073] According to one embodiment of the present invention, the air supply device 300 further includes a heat exchange component, which is disposed at the inlet of the air inlet pipe 310.

[0074] In this embodiment, the air supply device 300 mainly consists of an air supply pipe, an air outlet pipe 320, and a heat exchange component. The heat exchange component is located at the main air inlet of the air inlet pipe 310, that is, at the air inlet of the main air supply pipe, to cool the airflow that is about to enter the first air duct 110 and the second air duct 210, so that the cooling air cools the equipment to be cooled located at the main air outlet of the air outlet pipe 320.

[0075] In other embodiments, the air supply device 300 may only be provided with air supply ducts to send natural air into the first air duct 110 and the second air duct 210 for natural air cooling, or one of the first air duct 110 and the second air duct 210 may be connected vertically to allow the cooling air of the first air duct 110 and the second air duct 210 to be interconnected. This interconnection increases the air volume and meets the cooling requirements of low-temperature air supply.

[0076] like Figure 3 and Figure 4 As shown, this utility model embodiment provides a vehicle chassis frame, including a side beam 400. The side beam 400 includes a first platform portion 410 and an inner vertical rib 420. The upper surface of the first platform portion 410 is provided with a first pad 411. The inner vertical rib 420 is connected to the edge of the first platform portion 410 near the floor. At least one of the first platform portion 410 and the inner vertical rib 420 is provided with a first mounting hole 430. The first mounting hole 430 is suitable for equipment mounting components 710 to pass through and connect with the first pad 411.

[0077] The vehicle chassis of this utility model embodiment mainly improves the structure of the first platform portion 410 and the inner vertical rib 420 of the side beam 400. The side of the side beam 400 closer to the floor is the inner side, and the side farther from the floor is the outer side. The first platform portion 410 extends horizontally along the longitudinal direction of the vehicle body. The inner side of the first platform portion 410 is connected to the vertically arranged inner vertical rib 420, forming a frame structure of the side beam 400 on the inner side through the first platform portion 410 and the inner vertical rib 420. A first pad 411 is provided on the upper surface of the first platform portion 410. The extension direction of the first pad 411 is the same as the extension direction of the first platform portion 410. The under-vehicle equipment 700 can be hoisted or supported by the two side beams 400. Therefore, a first mounting hole 430 is provided on at least one of the inner vertical rib 420 and the first platform portion 410 as a hoisting interface or support interface. The equipment mounting component 710 of the under-vehicle equipment 700 passes through the first mounting hole 430 and connects to the first pad 411.

[0078] To address the diverse installation methods of the under-vehicle equipment 700 in rail transit vehicles, this utility model proposes an integrated hoisting and support structure for the side beam 400 and its installation method, resolving issues such as the variety of installation methods, complex structural forms, and insufficient reliability of the under-vehicle equipment 700. The side beam 400 structure adopts a multi-functional cavity design formed by aluminum alloy extrusion, including a first mounting hole 430 as a hoisting and support interface, significantly reducing the number of equipment installation interface types. During installation of the under-vehicle equipment 700, the optimal installation method is selected based on the equipment type; heavy equipment is fixed using support, while heavy equipment with vibration sources is fixed using hoisting, further realizing modular design and unified interface management. This utility model replaces material stacking or welding reinforcement with an optimized cavity structure of the side beam 400, solving the problem of forced weight increase and high cost in traditional structures for load-bearing, achieving a lightweight structural design. The first pad 411 further improves the rigidity of the connection between the side beam 400 and the equipment installation component 710, ensuring structural safety and reliability.

[0079] In this embodiment, the first pad 411 can be made of alloy steel plate.

[0080] like Figure 7 , Figure 8 and Figure 9As shown, according to one embodiment of the present invention, the side beam 400 further includes a middle vertical rib 440 and a second platform portion 450. The middle vertical rib 440 is connected to the edge of the first platform portion 410 away from the floor. The second platform portion 450 is connected to the side of the middle vertical rib 440 opposite to the first platform portion 410. The second platform portion 450 is provided with a second mounting hole 460, which is adapted for the equipment mounting component 710 to pass through and connect to the second platform portion 450.

[0081] In this embodiment, the side beam 400 is mainly composed of a first platform portion 410, a second platform portion 450, an inner vertical rib 420, and a middle vertical rib 440. In addition to structural improvements to the first platform portion 410 and the inner vertical rib 420, structural improvements are also made to the second platform portion 450 of the side beam 400. The first platform portion 410 is connected to the vertically arranged middle vertical rib 440 on the outside. The second platform portion 450 extends horizontally along the longitudinal direction of the vehicle body and is connected to the outside of the middle vertical rib 440. Thus, the middle vertical rib 440 separates the first platform portion 410 and the second platform portion 450, and the second platform portion 450 and the middle vertical rib 440 form a frame structure of the side beam 400 on the outside. The undercarriage equipment 700 can be hoisted by two side beams 400 and slide through a chute 452. Therefore, a second mounting hole 460 is provided in the second platform section 450 as a hoisting interface or a chute 452 interface. The equipment mounting component 710 of the undercarriage equipment 700 passes through the second mounting hole 460 and connects to the second platform section 450.

[0082] To address the diverse installation methods of the under-vehicle equipment 700 in rail transit vehicles, this utility model proposes a side beam 400 structure and equipment installation method that integrates hoisting, support, and sliding connection methods, solving the problems of diverse installation methods, complex structural forms, and insufficient reliability of the under-vehicle equipment 700. Furthermore, through a multi-layer cavity integrated design, the number of welding and parts can be reduced, resulting in a significant simplification of the structure and resolving the issue of redundant space occupation.

[0083] According to one embodiment of the present invention, the second mounting hole 460 extends along the longitudinal direction of the vehicle body, and the second platform portion 450 has a notch 454 at its end in the longitudinal direction of the vehicle body, and the notch 454 communicates with the second mounting hole 460.

[0084] In this embodiment, the second mounting hole 460 has a certain length and extends along the extension direction of the second platform portion 450. A notch 454 is provided at the end of the second platform portion 450 to communicate with the second mounting hole 460. The equipment mounting component 710 of the undercarriage equipment 700 can slide into the second mounting hole 460 through the notch 454 to complete the sliding connection with the side beam 400.

[0085] This utility model adopts a multi-functional cavity design formed by aluminum alloy extrusion, including a hoisting and supporting interface and a sliding interface. The first mounting hole 430 serves as a structure for bottom support / upper hoisting platform, suitable for rigid fixation of heavy equipment. The notch 454, in conjunction with the second mounting hole 460, supports fine-tuning of the position of lightweight equipment. Small-weight equipment and modular large-size equipment are installed through the slide groove 452, which can slide and be positioned within it.

[0086] According to one embodiment of the present invention, the upper surface of the second platform portion 450 is further provided with a partition 451, and the partition 451 surrounds the second mounting hole 460 to form a groove 452.

[0087] In this embodiment, a partition 451 is provided on the second platform portion 450. The two ends of the partition 451 are connected to the second platform portion 450 and the intermediate vertical rib 440, respectively. The partition 451 is provided above the second mounting hole 460. The partition 451, the second platform portion 450 and the intermediate vertical rib 440 form a sliding groove 452. The second mounting hole 460 serves as the opening of the sliding groove 452. The partition 451 can limit the size of the sliding groove 452 and the positioning position of the equipment mounting component 710. At the same time, the partition 451 can further enhance the strength of the cavity structure formed by the second platform portion 450 and the intermediate vertical rib 440.

[0088] Since the partition 451 limits the space of the slide 452, the second platform part 450 must be provided with a notch 454 to cooperate with the second mounting hole 460 to form an open slide 452 structure in order to realize the installation of the equipment mounting component 710.

[0089] This utility model is compatible with 90% of under-vehicle equipment 700 through hoisting, support, and chute 452 interfaces. This significantly reduces the number of equipment installation interface types, further realizing modular design and unified interface management.

[0090] According to one embodiment of the present invention, a second pad 453 is provided on the upper surface of the second platform part 450, and a second mounting hole 460 is adapted for the equipment mounting component 710 to pass through and connect with the second pad 453.

[0091] In this embodiment, in order to further improve the structural strength of the equipment mounting component 710 and the second platform part 450 at the connection position, a second pad 453 can also be provided on the upper surface of the second platform part 450. The second pad 453 is also provided with corresponding through holes, which correspond to the second mounting hole 460. This means that the equipment mounting component 710 passes through the second mounting hole 460 and the through hole and is connected to the second pad 453.

[0092] The second pad 453 can be made of alloy steel plate. This structure ensures that the load on the equipment is borne by the high-strength alloy steel pad, which greatly reduces the load on the side beam 400.

[0093] According to one embodiment of the present invention, the side beam 400 further includes an outer vertical rib 470 and a diagonal rib 480. The outer vertical rib 470 is connected to the edge of the second platform portion 450 away from the floor. The diagonal rib 480 is connected between the outer vertical rib 470 and the middle vertical rib 440. The diagonal rib 480 is inclined to the second platform portion 450 at a set angle.

[0094] In this embodiment, the side beam 400 is mainly composed of a first platform portion 410, a second platform portion 450, an inner vertical rib 420, a middle vertical rib 440, an outer vertical rib 470, and a diagonal rib 480. The outer vertical rib 470 is vertically arranged on the outside of the second platform portion 450, which means that the first platform portion 410, the inner vertical rib 420, and the middle vertical rib 440 form a first cavity, and the second platform portion 450, the middle vertical rib 440, and the outer vertical rib 470 form a second cavity. Thus, the first platform portion 410, the second platform portion 450, the inner vertical rib 420, and the outer vertical rib 470 form the U-shaped profile of the side beam 400 and form the cavity.

[0095] The integrated base frame side beam 400 of this utility model is a multi-cavity hollow pultruded aluminum profile structure. To improve structural rigidity and strength, the side beam 400 is equipped with internal diagonal ribs 480, internal vertical ribs, external vertical ribs, and a bottom platform within its outer contour, forming a stable frame structure. The overall rigidity is enhanced through the connection of reinforcing ribs. All equipment installation points are arranged on the side beam 400, resulting in an integrated extrusion molding process and a reinforced structure, thus improving vertical rigidity and fatigue resistance. This solves the problems of stress concentration and low reliability caused by multi-component splicing, significantly enhancing load-bearing stability and operational safety. The bottom platform, serving as the mounting surface for heavy equipment, has been dimensionally optimized to accommodate the installation of equipment of different weight levels.

[0096] According to one embodiment of the present invention, the first platform portion 410 and the second platform portion 450 are located on the same horizontal plane.

[0097] In this embodiment, the first platform section 410 and the second platform section 450 are on the same plane, which is equivalent to the first platform section 410 and the second platform section 450 being an integral bottom platform structure. They are divided into the first platform section 410 and the second platform section 450 by the intermediate vertical rib 440. In other embodiments, the first platform section 410 and the second platform section 450 may not be on the same plane. Depending on the actual structural requirements, they may be distributed at different heights, and the connection positions of the under-vehicle equipment 700 may be spatially staggered to facilitate the spatial allocation of the under-vehicle equipment 700.

[0098] like Figure 5, Figure 6 and Figure 7 As shown, according to one embodiment of the present invention, the vehicle chassis further includes a lifting seat 500 and a lifting bolt 600. The lifting seat 500 is located below the first platform portion 410 or the second platform portion 450, and the lifting seat 500 is adapted to be connected to the equipment mounting component 710. The lifting bolt 600 is disposed in the first mounting hole 430 or the second mounting hole 460, and the first platform portion 410 or the second platform portion 450 is connected to the lifting seat 500 through the lifting bolt 600.

[0099] In this embodiment, when the undercarriage equipment 700 is connected to the side beam 400 by hoisting, the vehicle chassis mainly consists of the side beam 400, the hoisting seat 500, and the hoisting bolt 600. The hoisting seat 500 and the hoisting bolt 600 serve as the equipment hoisting structure. At this time, the first platform part 410 is provided with a first mounting hole 430, and a first pad 411 is provided on the upper surface of the first platform part 410. The first pad 411 is provided with a corresponding through hole. The hoisting seat 500 is located below the first mounting hole 430. The hoisting bolt 600 passes through the through hole and the first mounting hole 430 from top to bottom and is connected to the hoisting seat 500. The equipment mounting component 710 of the undercarriage equipment 700 is located inside the hoisting seat 500, thereby realizing the hoisting connection of the undercarriage equipment 700 on the side beam 400.

[0100] The second platform section 450 is provided with a second mounting hole 460. The lifting seat 500 is located below the second mounting hole 460. The lifting bolt 600 passes through the second mounting hole 460 from top to bottom and connects to the lifting seat 500. The equipment mounting component 710 of the undercarriage equipment 700 is located inside the lifting seat 500, thereby realizing the lifting connection of the undercarriage equipment 700 on the side beam 400. The second mounting hole 460 can also cooperate with the notch 454 to form a sliding groove 452 structure for hanging lightweight equipment. The lifting bolt 600 enters the second mounting hole 460 through the notch 454, allowing for flexible adjustment and installation of the equipment.

[0101] In other embodiments, when the undercarriage equipment 700 is connected to the side beam 400 via a support mounting method, the inner vertical rib 420 is provided with a first mounting hole 430, and a first pad 411 is provided on the upper surface of the first platform portion 410. The first pad 411 is bolted to the first platform portion 410. The equipment mounting component 710 is a support beam 711, which passes through the first mounting hole 430 to above the first pad 411 and is then bolted to the first pad 411. This structure ensures that the equipment load is borne by a high-strength alloy steel pad, greatly reducing the load on the aluminum alloy structure.

[0102] like Figure 10 As shown, this utility model embodiment also provides a vehicle body, including the vehicle body chassis as described in the above embodiment.

[0103] The rail vehicle body of this embodiment is a welded structure made of hollow aluminum profiles. It consists of a roof 810, side walls 820, and a base frame. The base frame includes a floor structure and side beams 400. An inner floor 100 is installed on the upper part of the vehicle body floor 200 for passenger support. The side beams 400 of the base frame are a structure that integrates hoisting, support, and sliding groove 452 methods, solving the problems of diverse installation methods, complex structural forms, and insufficient reliability of under-vehicle equipment 700.

[0104] The core of this utility model's base frame structure consists of two key components: the integrated side beam 400 and the multi-functional floor structure. The integrated side beam 400 is manufactured using an aluminum alloy extrusion molding process and features an innovative multi-functional cavity structure. This structure integrates multiple interfaces: including hoisting and mounting interfaces for rigid fixing of heavy equipment; sliding groove interfaces for fine-tuning the position of lightweight equipment; and a standardized interface layer for modular assembly of the equipment compartment. Each functional area is securely connected by reinforcing ribs, significantly improving the overall rigidity of the side beam 400. The multi-functional floor structure is welded from multiple thin-walled hollow aluminum profiles, combining lightweight and high rigidity.

[0105] Large equipment typically has multiple mounting or hanging points. This structure does not have high requirements for the dimensional and positional tolerances of the installation interfaces, thus reducing processing costs. In addition, all equipment mounting points are supported only by the 400mm side beams on both sides, requiring no other components or welded structures, making the structure extremely simplified.

[0106] This utility model embodiment also provides a rail vehicle, including a chassis as described in the above embodiment or a car body as described in the above embodiment.

[0107] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A vehicle chassis frame, characterized in that, include: Side beam (400), said side beam (400) includes: First platform section (410), the upper surface of the first platform section (410) is provided with a first pad (411). Inner vertical rib (420), the inner vertical rib (420) is connected to the edge of the first platform part (410) near the floor; At least one of the first platform section (410) and the inner vertical rib (420) is provided with a first mounting hole (430), which is suitable for the equipment mounting component (710) to pass through and connect with the first pad (411).

2. The vehicle chassis according to claim 1, characterized in that, The side beam (400) also includes: Intermediate vertical rib (440), the intermediate vertical rib (440) is connected to the edge of the first platform part (410) away from the floor; The second platform section (450) is connected to the side of the intermediate vertical rib (440) facing away from the first platform section (410). The second platform section (450) is provided with a second mounting hole (460), which is suitable for the equipment mounting component (710) to pass through and connect with the second platform section (450).

3. The vehicle chassis frame according to claim 2, characterized in that, The second mounting hole (460) extends along the longitudinal direction of the vehicle body, and the second platform portion (450) has a notch (454) at its end in the longitudinal direction of the vehicle body, the notch (454) communicating with the second mounting hole (460).

4. The vehicle chassis frame according to claim 3, characterized in that, The upper surface of the second platform section (450) is also provided with a partition (451), which surrounds the second mounting hole (460) to form a groove (452).

5. The vehicle chassis frame according to claim 2, characterized in that, The upper surface of the second platform part (450) is provided with a second pad (453), and the second mounting hole (460) is adapted for the equipment mounting component (710) to pass through and connect with the second pad (453).

6. The vehicle chassis frame according to claim 2, characterized in that, The side beam (400) also includes: Outer vertical rib (470), the outer vertical rib (470) and the second platform portion (450) are connected to the edge away from the floor; The inclined rib (480) is connected between the outer vertical rib (470) and the middle vertical rib (440), and the inclined rib (480) is inclined at a set angle to the second platform part (450).

7. The vehicle chassis frame according to claim 2, characterized in that, The first platform section (410) and the second platform section (450) are located on the same horizontal plane.

8. The vehicle chassis according to claim 6, characterized in that, Also includes: A lifting base (500) is located below the first platform portion (410) or the second platform portion (450), and the lifting base (500) is adapted to be connected to the equipment mounting component (710); A lifting bolt (600) is provided in the first mounting hole (430) or the second mounting hole (460), and the first platform part (410) or the second platform part (450) is connected to the lifting seat (500) through the lifting bolt (600).

9. A vehicle body, characterized in that, Includes the vehicle chassis as described in any one of claims 1 to 8.

10. A rail vehicle, characterized in that, Includes the vehicle chassis as described in any one of claims 1 to 8 or the vehicle body as described in claim 9.

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