Train body and side forced guiding guide rail type rubber wheel train

Abstract

The train body comprises a bottom frame, side walls arranged on the two sides of the bottom frame respectively, a train roof fixed to the upper portions of the side walls in a crossing mode and end walls arranged at the two ends of the train body. The main body parts of the underframe, the side walls and the roof are made of aluminum profiles; the roof comprises a middle dome and end domes fixed to the middle dome, at least one end dome is integrated with an air conditioner installation frame, and the middle dome and the end domes are both manufactured in a modularized mode. The air conditioner mounting frame is integrated on the end dome, so that the production process is simplified, and the production efficiency is improved. Wherein the end dome is formed by splicing and welding only four profiles, so that welding seams are greatly reduced, and the product quality is improved. The weight of the air conditioner is directly transmitted to the side walls through the end dome longitudinal profiles, the stress condition is better, the middle dome does not bear the weight force of the air conditioner, and the structure is more stable.

Description

Technical Field

[0001] This invention relates to the body structure of a side-guided rubber-tired train, belonging to the technical field of body structure for fully automated people mover (APM) vehicles. Background Technology

[0002] APM (Automated People Mover) is a driverless public transportation system with advantages such as small turning radius, minimal land use, low operating noise, short construction period, and low cost. It is primarily used in airports, city centers, and large industrial parks. The concept of APM first appeared in the 1960s, when urban traffic congestion became increasingly severe, prompting the exploration of automated transportation solutions. In 1967, Westinghouse Electric conducted the first APM system trial, named "Skybus," in South Park, Pittsburgh. Although this project ultimately failed to achieve commercialization, it laid the foundation for the development of subsequent APM systems.

[0003] To adapt to the growing demand from air passengers, meet increasingly higher service levels, and ensure rapid connections between airport facilities, more and more large airports are introducing Automated People Mover (APM) systems to solve the problem of rapid passenger transport within the airport area. APM systems have become a key focus of current airport construction and a future development trend. Especially since the beginning of the 21st century, APM systems have been widely used globally. Many cities and airports in Asia, Europe, and the Middle East have introduced APM systems. For example, Beijing Capital International Airport launched its APM system in 2008, and it was also used during the 2010 Shanghai World Expo.

[0004] Air conditioning in APM trains is primarily installed either on the roof or at the rear. Roof-mounted installation, due to its space-saving design, has become the mainstream choice for traditional rail vehicles. With the trend towards lightweighting, aluminum alloy car bodies are widely used in APM trains. Achieving both structural strength and lightweighting, along with simplified manufacturing processes, has become a key challenge in this field.

[0005] A search revealed that Chinese invention patent application CN110843828A discloses an aluminum alloy roof structure, which uses multiple longitudinal profiles welded together and has an air conditioning mounting frame in the center of the dome. This design still has the following drawbacks: the large number of longitudinal welds makes the welding work complex and severely restricts production efficiency. Summary of the Invention

[0006] To address the problems in the prior art, this invention proposes a rubber-tired train with a body and side guide rails, which integrates an air conditioning mounting frame in the end dome, simplifying the welding process and improving production efficiency.

[0007] Therefore, the specific technical solution adopted by the present invention is as follows: a vehicle body, including a chassis, side walls disposed on both sides of the chassis, a roof spanning and fixed above the side walls, and end walls disposed at two ends of the vehicle body; the main body of the chassis, side walls, and roof is composed of aluminum profiles; characterized in that: The roof includes a central dome and end domes fixed to the central dome. At least one of the end domes integrates an air conditioning mounting frame. Both the central dome and the end domes are modularly manufactured.

[0008] Furthermore, the end dome integrating the air conditioner mounting frame includes two longitudinally arranged end dome profiles and two transversely arranged end dome profiles. The two longitudinal end dome profiles and the two transverse end dome profiles are spliced ​​together to form a rectangular frame. The inner ends of the longitudinal end dome profiles and the inner ends of the transverse end dome profiles form the air conditioner mounting frame. The left and right sides of the longitudinal end dome profiles are supported by the side walls. The weight of the air conditioner borne by the air conditioner mounting frame is mainly transferred directly to the side walls through the longitudinal end dome profiles.

[0009] This invention integrates the air conditioner mounting frame into the end dome, simplifying the manufacturing process and improving production efficiency. The end dome is constructed from only four welded profiles, significantly reducing weld seams and improving product quality. The weight of the air conditioner is directly transferred to the side walls through the longitudinal profiles of the end dome, resulting in better stress distribution and ensuring the central dome is not burdened by the air conditioner's weight, thus enhancing structural stability. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the vehicle body of the present invention; Figure 2 This is a schematic diagram of the roof of the vehicle body of the present invention; Figure 3 This is a schematic diagram of the end dome of the roof of the vehicle according to the present invention; Figure 4 This is a top view of the end dome of the roof of the vehicle according to the present invention; Figure 5 yes Figure 3 AA section view; Figure 6 yes Figure 3 BB section view; Figure 7 This is a cross-sectional view of the central dome of the vehicle body. Figure 8 This is a schematic diagram of the side wall of the invention vehicle body; Figure 9 This is a schematic diagram showing the assembly relationship between the side wall upper beam and the roof side beam of the vehicle body. Figure 10 This is a schematic diagram of the end wall of the invention vehicle body; Figure 11 This is a schematic diagram of the vehicle chassis of the present invention; Figure 12 This is an exploded view of the vehicle chassis of the present invention; Figure 13 This is a cross-sectional view of the floor of the vehicle chassis of the present invention; Figure 14 This is a side cross-sectional view of the chassis frame of the present invention; Figure 15 This is an enlarged view of the bogie mounting area of ​​the vehicle body chassis of the present invention; Figure 16 This is an enlarged view of one end of the chassis frame of the present invention; Figure 17 This is an exploded view of the head coupler mounting base of the vehicle chassis of the present invention; Figure 18 This is a cross-sectional view of the installation structure of the head coupler mounting seat of the vehicle body chassis of the present invention; Figure 19 This is a two-position enlarged view of the vehicle body chassis of the present invention; Figure 20 This is an enlarged view of the motor mounting area of ​​the vehicle chassis of the present invention.

[0012] The symbols in the attached diagram are illustrated below: 100-Base frame; 110 - First-position end beam; 120 - Side beam; 121 - Side wall section; 122 - Floor section; 130 - Floor; 131 - Longitudinal beam; 132 - Inner crossbeam; 133 - Outer crossbeam; 134 - Intermediate floor; 135 - Side floor; 136 - Reinforcing plate for bogie mounting area; 137 - Threaded hole; 138 - Positioning hole; 140 - Second-position end beam; 150 - Head coupler mounting seat; 151 - Head coupler mounting seat base plate; 152 - Coupler fixing block; 153-Reinforcing rib; 154-Slot; 160-Intermediate coupler mounting base; 161-Intermediate coupler mounting base base plate; 162-Intermediate coupler fixing plate; 163-Longitudinal upright plate; 164-Intermediate coupler mounting hole; 165-Intermediate coupler longitudinal beam; 166-Intermediate coupler mounting base reinforcing plate; 167-Outer reinforcing plate of the sleeper; 168-Inner edge reinforcing plate of the sleeper; 169-Inner center reinforcing plate of the sleeper; 170-Motor mounting base; 200-Sidewall; 201-Side post; 202-Door post; 203-First-position side wall panel; 204-Middle side wall panel; 205-Second-position side wall panel; 206-Top beam; 207-Keyhole; 208-Positioning groove; 209-Outer wall; 210-Cavity; 211-Inner cavity; 212-Limiting rib; 213-Rain eaves installation interface; 214-Aesthetic panel installation interface; 215-Door mechanism installation interface; 300-Roof; 310 - Central dome; 311 - Central dome plate; 312 - Side dome plate; 313 - Roof edge beam; 320 - End dome; 321 - End dome longitudinal profile; 322 - End dome transverse profile; 323 - Extension; 324 - Air conditioning installation interface; 330 - Air conditioning installation frame; 400-End Wall; 401 - End door post; 402 - End corner post; 403 - End wall panel; 404 - End wall panel. Detailed Implementation

[0013] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0014] Example 1: Vehicle body example.

[0015] like Figure 1 , Figure 2 As shown, the vehicle body in this embodiment includes a chassis 100, side walls 200, a roof 300, and end walls 400. The two side walls 200 are welded and fixed to both sides of the chassis 100, the roof 300 is fixed across the top of the side walls 200, and the end walls 400 are located at the two ends of the vehicle body. The sides of the end walls 400 are fixed to the side walls 200, and the bottom of the end walls 400 is fixed to the chassis 100. The side walls 200 have openings for installing external doors and window openings for installing windows. The roof 300 includes two air conditioning mounting frames 330, one in front and one behind, and a driver's cab mask is installed at the front of the vehicle body. In this embodiment, all parts of the main structure of the vehicle body are welded and fixed using aluminum profiles; riveting can also be used.

[0016] like Figure 2As shown, the roof 300 includes a central dome 310 in the middle and end domes 320 on both sides. Both the central dome 310 and the end domes 320 are modularly manufactured. The inner edges of the end domes 320 are welded and fixed to the central dome 310. In this embodiment, the air conditioning mounting frame 330 is integrated into the end domes 320. The specific structure of the roof will be described in detail below.

[0017] like Figures 3 to 6 This is a structural diagram of the end dome 320 of the present invention. The end dome 320, which integrates the air conditioner mounting frame 330, includes two longitudinally arranged end dome profiles 321 and two transversely arranged end dome profiles 322. The two end dome profiles 321 and the two end dome profiles 322 are joined end-to-end and welded to form a rectangular frame. The inner ends of the end dome profiles 321 and the inner ends of the end dome profiles 322 form the air conditioner mounting frame 330. Figure 9 As can be seen, the left and right sides of the end dome longitudinal profile 321 are supported by the upper beam 206 of the side wall 200. The weight of the air conditioner borne by the air conditioner mounting frame 330 can be directly transferred to the side wall 200 mainly through the end dome longitudinal profile 321. Figure 5 , Figure 6 As shown, both the inner ends of the longitudinal profile 321 and the transverse profile 322 have upwardly extending extensions 323. Adjacent extensions 323 are welded together to form a rectangular barrel structure. These four extensions 323 constitute the sealing baffle of the air conditioning mounting frame 330. The sealing rubber of the air conditioning unit presses against the top of the extension 323 to achieve a sealed installation. The space between the extensions 323 forms an air conditioning mounting well 340, in which the air conditioning unit can be recessed and installed, reducing the height of the vehicle roof and improving the vehicle's passability. Figure 3 , Figure 4 , Figure 5 As shown, the upper surface of the end dome-shaped longitudinal profile 321 near its respective extension 323 is provided with an air conditioner mounting interface 324 for fixing the air conditioner. This air conditioner mounting interface 324 is a C-shaped groove. The air conditioner unit rests on the air conditioner mounting frame 330 and is fixed to the end dome-shaped longitudinal profile 321 through the C-shaped groove using bolts and nuts. This fixing structure is sufficiently stable and does not require fixing to all four sides as in traditional solutions, simplifying the installation process.

[0018] In this embodiment, the two end dome horizontal profiles 322 of the end dome 320 at the first position are relatively long. Both ends of the end dome horizontal profiles 322 are directly fixed to the upper beam 206 of the side wall 200. The two ends of the end dome vertical profile 321 are welded and fixed to the inner sidewalls of the end dome horizontal profiles 322, respectively. The end dome 320 at the second position, closer to the first position end (… Figure 2The horizontal dome profile 322 at the left end (middle left) is relatively long, and its two ends are directly fixed to the upper beam 206 of the side wall 200. In the end dome 320 at the two ends, the front end of the vertical dome profile 321 at the two ends is welded and fixed to the inner sidewall of the horizontal dome profile 322. In this embodiment, the end dome 320 at the two ends is close to the two ends (middle left) Figure 2 The end dome horizontal profile 322 (on the right side) is relatively short, and its two ends are welded to the inner wall of the end dome vertical profile 321. On one side of the two ends, the rear end face of the end dome horizontal profile 322 and the rear end face of the end dome vertical profile 321 are both welded and fixed to the end wall 400, specifically to the end wall plate 404 of the end wall 400 (see...). Figure 10 This design minimizes the number of welds. If the two ends also use a similar design... Figure 4 The diagram shows the end dome 320 structure of the first-position end. Not only do the longitudinal profile 321 and the transverse profile 322 of the end dome need to be welded, but the transverse profile 322 also needs to be welded to the end wall, resulting in a large amount of welding work. Therefore, the end dome 320 of the second-position end in this embodiment has undergone structural optimization. Since the weight of the air conditioner is primarily supported by the longitudinal profile 321, the structural strength requirements for the transverse profile 322 are reduced, thus enabling a simplified design.

[0019] like Figure 7 As shown, the central dome 310 is composed of a central dome plate 311, side dome plates 312 symmetrically distributed on both sides, and roof edge beams 313. The central dome plate 311, side dome plates 312, and roof edge beams 313 are all made of aluminum profiles, and adjacent aluminum profiles are fixed by interlocking welding. See also... Figure 9 The roof edge beam 313 overlaps with the side wall edge beam 206 and is welded and fixed. For example... Figure 2 As shown, the front and rear ends of the middle dome are welded and fixed to the end dome 320 respectively. Specifically, the ends of the middle dome plate 311, the ends of the side dome plate 312, and the ends of the roof side beam 313 are all welded and fixed to the dome horizontal profile 322 of the end dome 320.

[0020] In this embodiment, the end dome longitudinal profile 321, the end dome transverse profile 322, the middle dome plate 311, the side dome plate 312, and the roof side beam 313 are all integral aluminum profiles produced by extrusion molding process. The end dome longitudinal profile 321, the end dome transverse profile 322, and the roof side beam 313 have several reinforcing ribs inside.

[0021] like Figure 8 , Figure 9As shown, the side wall 200 includes an upper beam 206, and side columns 201, door columns 202, a first-position side wall panel 203, a middle side wall panel 204, and a second-position side wall panel 205 fixed between the upper beam 206 and the base frame 100. The upper beam 206, side columns 201, door columns 202, first-position side wall panel 203, middle side wall panel 204, and second-position side wall panel 205 are all integral aluminum profiles produced through an extrusion molding process.

[0022] like Figure 8 , 9 As shown, the upper beam 206 includes an outer wall 209 with positioning grooves 208 arranged along the length of the vehicle and a cavity 210 located inside the outer wall 209. The outer wall 209 of the upper beam 206 has keyholes 207 for hoisting the upper door guide rails spaced apart along the positioning grooves 208. In this embodiment, the keyholes 207 are opened along the positioning grooves 208, ensuring that the positions of the keyholes 207 are in a straight line, thus improving the installation accuracy of the upper door guide rails. Figure 9 As shown, cavity 210 has an inner cavity 211 for accommodating the longitudinal sliding of a T-shaped threaded block suitable for connecting the upper guide rail of the car door, and two limiting ribs 212 located at the inner end of the inner cavity 211 for abutting the tail boss of the T-shaped threaded block. When installing the upper guide rail of the car door, the T-shaped threaded block is inserted into the inner cavity 211 through the large opening of the keyhole 207, so that the tail boss of the T-shaped threaded block is embedded between the two limiting ribs 212. Then, the T-shaped threaded block is slid so that the threaded hole is located at the small opening of the keyhole. Then, the upper guide rail is placed in the installation position, and then the bolt is screwed into the threaded hole of the T-shaped threaded block after passing through the pad and the guide rail and tightened, thereby fixing the upper guide rail to the outer wall 209 of the upper side beam 206.

[0023] like Figure 9 As shown, the inner side of the upper beam 206 is provided with a gantry mechanism mounting interface 215 extending along the length of the vehicle for hoisting the gantry vehicle. The outer side of the upper beam 206 is also provided with a rain eaves mounting interface 213 and an aesthetic panel mounting interface 214.

[0024] like Figure 10 As shown, the end wall 400 includes an end gate column 401 and an end corner column 402 fixed to the base frame. An end wall plate 403 is welded and fixed between the end gate column 401 and the end corner column 402. An end wall plate 404 is welded and fixed above the end gate column 401 and the end corner column 402.

[0025] like Figure 11 , Figure 12 As shown, the base frame 100 includes a floor 130, side beams 120, a first-position end beam 110, and a second-position end beam 140. The side beams 120 are welded to both sides of the floor 130. The first-position end beam 110 and the second-position end beam 140 are located at both ends of the base frame and are welded to the floor 130 and side beams 120, respectively. Figure 11 As can be seen, two downward-protruding longitudinal beams 131 are symmetrically arranged on the lower surface of the floor 130 in the two bogie mounting areas. These longitudinal beams 131 and the floor 130 extend longitudinally to form an integral structure; specifically, the longitudinal beams 131 and the floor 130 are formed into an integral aluminum profile structure through an extrusion molding process. Figure 13 As shown, in this embodiment, the floor 130 includes a middle floor 134 and side floor 135 fixed to both sides of the middle floor 134. The two ends of the middle floor 134 are inserted into the side floor 135 and then welded together. After welding, the weld is polished to make the weld smooth. Of course, it is also feasible to fix the middle floor 134 and the side floor 135 together by riveting. In this embodiment, the longitudinal beam 131 and the side floor 135 are integral structures made by aluminum profile extrusion molding. The vehicle body of this invention uses these two longitudinal beams 131 to provide the installation of the bogie. The middle floor 134 and the side floor 135 are long hollow aluminum profiles with internal stiffeners. As an important load-bearing component of the vehicle body chassis, the longitudinal beam 131 has high strength requirements. In this embodiment, the longitudinal beam 131 has a rectangular hollow structure. The wall thickness of the bottom wall and the two side walls of the longitudinal beam 131 is about twice the wall thickness of the floor 130 profile. Generally, 1.5-2.5 times is more ideal. In this embodiment, the floor profile has a wall thickness of 4mm, the bottom wall thickness of the longitudinal beam 131 is 10mm, and the side wall thickness of the longitudinal beam 131 is 8mm. To further improve strength, the bottom wall of the longitudinal beam 131 extends to both sides by a length of 23mm.

[0026] like Figure 14 As shown, the side beam 120 has an upwardly extending side wall section 121 for fixed connection with the side wall and a floor section 122 extending into the vehicle interior. The floor section 122 of the side beam 120 is fixed to the side floor 135 by insertion welding (or riveting). The upper surfaces of the floor sections 122 of the two side beams 120, the upper surfaces of the two side floor 135, and the upper surface of the intermediate floor 134 are flush. The lower surfaces of the floor sections 122 of the two side beams 120, the lower surfaces of the two side floor 135, and the lower surface of the intermediate floor 134 are flush. Figure 13 As shown, the side beam 120 is also a full-length hollow aluminum profile with internal stiffeners.

[0027] like Figure 15As shown, the longitudinal beam 131 is provided with a first bogie mounting interface for connecting the bogie. This first bogie mounting interface includes two threaded holes 137 and a positioning hole 138 arranged longitudinally along each longitudinal beam 131 from the vehicle center to the vehicle end. The positioning hole 138 can also be a positioning pin; in this case, the bogie frame is correspondingly provided with positioning holes, and the two cooperate to achieve positioning. In this embodiment, the threaded holes 137 and the positioning holes 138 are symmetrically arranged with respect to the underframe centerline. To improve the structural strength of the bogie mounting area, in this embodiment, bogie mounting area reinforcing plates 136 corresponding to the first bogie mounting interface are welded between the longitudinal beams 131. Specifically, one bogie mounting area reinforcing plate 136 is arranged between each pair of threaded holes 137, and another bogie mounting area reinforcing plate 136 is arranged between each pair of positioning holes 138. Since the lateral force between the bogie and the underframe longitudinal beam 131 is transmitted through the bogie mounting interface, the bogie mounting area reinforcement plate 136 can strengthen the structural strength of this area and improve the overall rigidity of the underframe.

[0028] like Figure 11 , Figure 12 , Figure 15 As shown, a segmented crossbeam is fixed to the lower surface of the floor 130 on the side of the two bogie mounting areas away from the vehicle center. The segmented crossbeam includes an inner crossbeam 132 located between the two longitudinal beams 131 and an outer crossbeam 133 located between the side beam 120 and the longitudinal beams 131. The inner crossbeam 132 is welded to the inner surfaces of the longitudinal beams 131 at both ends, while the outer crossbeam 133 is welded to the inner surfaces of the side beams 120 and the outer surfaces of the longitudinal beams 131 at both ends. To increase welding strength, the welded portions of the inner crossbeam 132 and the outer crossbeam 133 to the floor 130 are flanged, increasing the contact area and facilitating welding. To facilitate welding operations between the segmented crossbeams and the longitudinal beams 131, as well as welding operations of the reinforcing plates 136 within the bogie mounting area, as shown... Figure 6 As shown, the bottom wall extension edge of the longitudinal beam 131 was removed in the corresponding welding area.

[0029] like Figure 15 As shown, the inner crossbeam 132 is provided with a second bogie mounting interface for connecting the bogie. The second bogie mounting interface includes two threaded holes 137 arranged along the longitudinal direction (i.e., the vehicle width direction) of the inner crossbeam 132, and the two threaded holes 137 on the two inner crossbeams 132 are symmetrically distributed with respect to the centerline of the underframe.

[0030] The underframe of this invention provides bogie mounting interfaces through longitudinal beams and inner transverse beams beneath the floor, offering advantages such as compact structure, high strength, fewer welds, simple construction, and high production efficiency. This embodiment provides a specific structure for the bogie mounting interface, but is not limited to this structural form. The bogie mounting interface of the underframe simply needs to be compatible with the mounting interface on the bogie.

[0031] like Figure 11 , Figure 12 and Figure 15 As shown, the inner crossbeam 132 and the outer crossbeam 133 are arranged in a straight line along the width direction of the vehicle, so that the lateral force from the bogie on the longitudinal beam can be directly transmitted to the side beam 120 through the outer crossbeam, thereby improving the lateral stiffness of the chassis frame.

[0032] like Figure 11 , Figure 12 As shown, the bottom surface of the floor 130 is provided with C-shaped grooves (undercar equipment mounting interfaces) for mounting undercarriage equipment. These C-shaped grooves are mainly distributed between the two bogie mounting areas on the lower surface of the floor 130. In order to reserve more installation space for undercarriage equipment, in this embodiment, the longitudinal beam 131 is broken on the side of the two bogie mounting areas closer to the vehicle center. Specifically, the longitudinal beam 131 is removed between the two bogie mounting areas (but the longitudinal beam in the motor mounting area needs to be retained) to reserve more installation space for undercarriage equipment.

[0033] The base frame has a head coupler mounting seat at one end, the specific structure of which is as follows: Figure 11 , Figure 16 As shown, a longitudinal beam 131 on the side near the end beam 110 extends toward the end beam 110, and a coupler mounting seat 150 is fixed to the lower surface of the floor 130 on the side near the end beam 110. Figure 11 , Figure 16 , Figure 17 As shown, the head coupler mounting base 150 includes a head coupler mounting base plate 151 and two symmetrical coupler fixing blocks 152 fastened to the upper surface of the head coupler mounting base plate 151 by countersunk screws. The two sides of the head coupler mounting base plate 151 are welded and fixed to the inner sides of the two longitudinal beams 131, respectively, and the front end of the head coupler mounting base plate 151 is welded and fixed to the rear facade of the end beam 110. Three longitudinally arranged reinforcing ribs 153 are welded between the head coupler mounting base plate 151 and the lower surface of the floor 130. Specifically, the head coupler mounting base plate 151 has three slots 154 for inserting the bottom of the reinforcing ribs 153. The top of the reinforcing ribs 153 is welded and fixed to the lower surface of the floor 130, and the bottom of the reinforcing ribs 153 is welded to the edge of the slots 154, thereby strengthening the overall strength of the head coupler mounting base 150. In this embodiment, the coupler fixing block 152 is made of threaded steel plate, and the head coupler mounting base plate 151 and reinforcing rib 153 are made of 6082 aluminum plate.

[0034] The coupler fixing block 152 has a threaded hole for fixing the head coupler, and the head coupler mounting base plate 151 has a through hole corresponding to the threaded hole. Bolts for fixing the head coupler pass sequentially through the head coupler, the through hole of the head coupler mounting base plate 151, and are then screwed into the threaded hole of the coupler fixing block 152, thus fixing the head coupler to the head coupler mounting base plate 151. The longitudinal force of the head coupler is transmitted to the longitudinal beam 131 and the first end beam 110 through the head coupler mounting base plate 151, thereby transmitting it to the entire underframe.

[0035] Simulation calculations show that the head coupler mounting base 150 of the underframe in this embodiment can meet the body strength requirements of APM vehicles, achieving a longitudinal compressive load ≥200kN and a tensile load ≥200kN at the head coupler connection.

[0036] In this embodiment, the head coupler mounting base 150 is top-mounted. Compared to traditional coupler mounting bases fixed to the underframe, the structure and implementation process of the head coupler mounting base of this invention are simple, requiring very little undercarriage space, effectively solving the problem of limited undercarriage space in APM vehicles. Figure 16 As can be seen, the lower surface of the head coupler mounting base plate 151 is higher than the bottom surface of the longitudinal beam 131 and the first end beam 110. The first end beam 110 has a notch in the lower middle part, and the bottom surface of the notch is flush with the head coupler mounting base plate 151. This provides the head coupler with more installation space and swing space.

[0037] During production, the coupler fixing block 152 is first fixed to the upper surface of the head coupler mounting base plate 151 with countersunk screws. Then, three reinforcing ribs 153 are welded to the bottom surface of the floor 130. The head coupler mounting base plate 151 is then placed in position so that the bottom of the reinforcing ribs 153 is inserted into the slots 154 of the head coupler mounting base plate 151. Finally, the head coupler mounting base plate 151 is welded and fixed.

[0038] In this embodiment, the chassis of the vehicle body is also equipped with intermediate coupler mounting seats at both ends, and the specific structure is as follows: Figure 11 , Figure 19 As shown, a middle coupler mounting seat 160 is provided on the lower surface of the floor 130 near the side of the second end beam 140. Figure 19As shown, the intermediate coupler mounting base 160 includes an intermediate coupler mounting base base plate 161 and an intermediate coupler fixing plate 162 that is horizontally and vertically fixed to the lower surface of the intermediate coupler mounting base base plate 161. The intermediate coupler mounting base base plate 161 is welded and fixed to the lower surface of the floor 130, and the intermediate coupler fixing plate 162 has intermediate coupler mounting holes 164 for fixing the intermediate coupler. In this embodiment, two pairs of longitudinal upright plates 163 are symmetrically welded to the lower surface of the intermediate coupler mounting base base plate 161, and the longitudinal upright plates 163 are respectively welded and fixed to the front and rear sides of the intermediate coupler fixing plate 162. To better transmit the traction force between the intermediate coupler mounting base 160 and the underframe, in this embodiment, an intermediate coupler longitudinal beam 165 is provided between the intermediate coupler fixing plate 162 and the inner crossbeam 132. The upper surface of the intermediate coupler longitudinal beam 165 is welded and fixed to the floor 130 and the intermediate coupler mounting base base plate 161, respectively. The front end of the intermediate coupler longitudinal beam 165 is welded and fixed to the rear facade of the intermediate coupler fixing plate 162, and the rear end of the intermediate coupler longitudinal beam 165 is welded and fixed to the front facade of the inner crossbeam 132. To further improve the strength of the intermediate coupler mounting base 160, such as... Figure 19 As shown, a middle coupler mounting base reinforcing plate 166 is welded and fixed between the lower surface of the middle coupler longitudinal beam 165 and the rear facade of the middle coupler fixing plate 162. An outer reinforcing plate 167, which is welded and fixed to the outer facade of the inner crossbeam 132, is welded between the middle coupler longitudinal beam 165 and the floor longitudinal beam 131. On the side of the two ends closest to the vehicle center, an inner edge reinforcing plate 168 is welded between the inner crossbeam 132 and the longitudinal beam 131, while an inner center reinforcing plate 169 is welded between the inner crossbeam 132 and the floor 130. In this embodiment, the middle coupler longitudinal beam 165 is a hollow aluminum profile with a rectangular cross-section. The materials of the middle coupler mounting base plate 161, the middle coupler fixing plate 162, the longitudinal vertical plate 163, the middle coupler mounting base reinforcing plate 166, the outer reinforcing plate 167, the inner edge reinforcing plate 168, and the inner center reinforcing plate 169 are all 6082 aluminum plates.

[0039] The longitudinal force on the intermediate coupler mounting base 160 is partly transmitted to the floor 130 through the intermediate coupler mounting base base plate 161; and partly transmitted to the inner crossbeam 132 through the intermediate coupler longitudinal beam 165, and then from the inner crossbeam 132 to the floor through the longitudinal beam 131. 167-Outer reinforcing plate; 168-Inner edge reinforcing plate; 169-Inner center reinforcing plate. 169 can improve the structural strength of this area, allowing the impact force from the intermediate coupler to be better absorbed by the underframe.

[0040] like Figure 11 , Figure 20As shown, a motor mounting bracket 170 is provided between the bogie mounting areas on the vehicle body underframe. Specifically, a longitudinal beam 131 near the second end beam 140 extends towards the vehicle center to form an extension section. Below this extension section, a motor mounting bracket 170 for hoisting the motor is fixed by rivets (or bolts). The motor mounting bracket 170 is an L-shaped cast steel component. The motor is hoisted below the motor mounting bracket 170 using hoisting bolts.

[0041] Example 2: Example of a side-guided guide rail type rubber-tired train.

[0042] This embodiment of the side-guided guide rail type rubber-tired train includes the car body described in Embodiment 1 above and a bogie fixed under the car body. The bogie includes a guide frame connected to the axle housing via a slewing bearing and guide wheel assemblies located at the four corners of the guide frame. The side-guided guide rail type rubber-tired train is guided along guide rails (also called guide rails) on the side of the vehicle. When cornering, the guide wheel assemblies are guided by the guide rails, driving the guide frame to rotate relative to the axle. Simultaneously, the guide frame drives the steering mechanism to steer the wheels, thus allowing the vehicle to smoothly navigate corners. When the vehicle is traveling in a straight line, the guide frame also ensures that the vehicle runs between the guide rails.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A vehicle body comprising a chassis (100), side walls (200) arranged on both sides of the chassis (100), a roof (300) spanning above the side walls (200), and end walls (400) arranged at both ends of the vehicle body; the main body parts of the chassis (100), the side walls (200) and the roof (300) are made of aluminum profiles; characterized in that: the roof (300) comprises a middle dome (310) and end domes (320) fixed with the middle dome (310), at least one of the end domes (320) is integrated with an air conditioner mounting frame (330), and the middle dome (310) and the end domes (320) are both made by modular manufacturing.

2. The vehicle body of claim 1, wherein: The end dome (320) integrated with the air conditioner mounting frame (330) comprises two longitudinally arranged end dome longitudinal profiles (321) and two transversely arranged end dome transverse profiles (322), the two end dome longitudinal profiles (321) and the two end dome transverse profiles (322) are spliced to form a rectangular frame, the inner ends of the end dome longitudinal profiles (321) and the inner ends of the end dome transverse profiles (322) form the air conditioner mounting frame (330); the left and right sides of the end dome longitudinal profiles (321) are supported on the side walls (200), and the air conditioner weight borne by the air conditioner mounting frame (330) is mainly transmitted to the side walls (200) through the end dome longitudinal profiles (321).

3. The vehicle body of claim 2, wherein: The inner ends of the end dome longitudinal profiles (321) and the inner ends of the end dome transverse profiles (322) are both provided with upwardly extending extensions (323), the adjacent extensions (323) are welded and fixed, the sealing baffle of the air conditioner mounting frame (330) is formed by the extensions (323), the space between the extensions (323) forms an air conditioner mounting well (340), and the upper surface of the end dome longitudinal profile (321) near the respective extension (323) is provided with an air conditioner mounting interface (324) for fixing the air conditioner.

4. The vehicle body of claim 2, wherein: The end dome transverse profile (322) near the center of the vehicle in the end dome (320) is fixed with the middle dome (310).

5. The vehicle body of claim 2, wherein: In the end dome (320) near one end, the two ends of the end dome transverse profile (322) are welded and fixed with the upper edge beam (206) of the side wall (200), and the two ends of the end dome longitudinal profile (321) are respectively welded and fixed with the inner side walls of the end dome transverse profile (322).

6. The vehicle body of claim 2, wherein: In the end dome (320) near the other end, the two ends of the end dome transverse profile (322) away from the other end are welded and fixed with the upper edge beam (206) of the side wall (200), and the two ends of the end dome longitudinal profile (321) are respectively welded and fixed with the inner side walls of the end dome transverse profile (322) away from the other end; the two ends of the end dome transverse profile (322) near the other end are welded and fixed with the inner side walls of the end dome longitudinal profile (321), and the rear end face of the end dome transverse profile (322) near the other end and the rear end face of the end dome longitudinal profile (321) are both welded and fixed with the end wall (400).

7. The vehicle body of claim 2, wherein: The end dome longitudinal profile (321) and the end dome cross profile (322) are integral aluminum profiles produced by an extrusion process, and have a plurality of reinforcing ribs inside.

8. The vehicle body of claim 1, wherein: The side wall (200) comprises an upper edge beam (206), an edge column (201) fixed between the upper edge beam (206) and a chassis (100), a door column (202), a one-end side wall plate (203), a middle side wall plate (204), and a two-end side wall plate (205), the upper edge beam (206) comprises an outer side wall (209) provided with a positioning groove (208) in the vehicle length direction and a cavity (210) inside the outer side wall (209), the outer side wall (209) of the upper edge beam (206) is provided with a keyhole (207) for hoisting a door upper rail along the positioning groove (208), and the cavity (210) has an inner cavity (211) for accommodating a T-shaped threaded block suitable for connection with the door upper rail and two limiting ribs (212) at the inner end of the inner cavity (211) for abutting against a tail boss of the T-shaped threaded block.

9. The vehicle body of claim 1, wherein: The inner side of the upper edge beam (206) is provided with a door mechanism mounting interface (215) extending in the vehicle length direction for hoisting a door mechanism vehicle, and the outer side of the upper edge beam (206) is further provided with a rain eave mounting interface (213) and an aesthetic plate mounting interface (214).

10. The vehicle body of claim 1, wherein: The chassis (100) comprises a floor (130), an edge beam (120), a one-end end beam (110), and a two-end end beam (140), the lower surface of the floor (130) is symmetrically provided with two longitudinal beams (131) protruding downward at two bogie mounting areas, the longitudinal beams (131) and the floor (130) are integrally formed in the longitudinal direction to form an integral structure, and the longitudinal beams (131) are provided with first bogie mounting interfaces for connecting bogies; An inner cross beam (132) fixed to the lower surface of the floor (130) is arranged between the two longitudinal beams away from the center of the vehicle on one side of the two bogie mounting areas, and the inner cross beam (132) is provided with second bogie mounting interfaces for connecting bogies.

11. The vehicle body of claim 7, wherein: The outer sides of the two ends of the inner cross beam (132) are further provided with outer cross beams (133) fixed to the lower surface of the floor (130), and the two ends of the outer cross beams (133) are fixed to the longitudinal beams (131) and the edge beam (120), respectively.

12. The vehicle body of claim 8, wherein: The longitudinal beams (131) are further welded with bogie mounting area reinforcing plates (136) corresponding to the first bogie mounting interfaces.

13. The vehicle body of claim 7, wherein: The chassis (100) is further provided with a head car coupler mounting seat (150), a middle car coupler mounting seat (160), and a motor mounting seat (170).

14. The vehicle body of claim 7, wherein: The floor (130) comprises a middle floor (134) and side floors (135) fixed on both sides of the middle floor (134), the side beams (120) have side wall sections (121) extending upward for fixed connection with side walls and floor sections (122) extending into the vehicle interior, the floor sections (122) are fixed with the side floors (135), upper surfaces of the floor sections (122) of the two side beams (120), upper surfaces of the two side floors (135) and an upper surface of the middle floor (134) are flush, lower surfaces of the floor sections (122) of the two side beams (120), lower surfaces of the two side floors (135) and a lower surface of the middle floor (134) are flush; the longitudinal beams (131) are located below the side floors (135), the longitudinal beams (131) and the side floors (135) are formed in an integral structure along the longitudinal direction.

15. A side guide guide rail type rubber-tyred train, characterized by, A vehicle body having the features of any one of claims 1 to 14.

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