CN223200131U - Chassis of passenger car - Google Patents

Abstract

The utility model provides a chassis of a passenger car, which comprises a drive axle module and is characterized in that the drive axle module comprises a front driving vertical piece structure arranged at the front end, the front driving vertical piece structure comprises at least one driving multi-interface casting, and the driving multi-interface casting comprises at least one connecting end for connecting a thrust rod or a stabilizing rod. The utility model fully uses the design thought of integrating the parts, integrates the structural parts and the functional parts, realizes that the integral parts replace complex splice welding parts, improves the strength of the whole vehicle by the integral casting, improves the reliability of the product, reduces the production cost and reduces the number of the parts.

Description

Chassis of passenger car

Technical Field

The utility model belongs to the fields of buses, passenger cars and the like, and particularly relates to a chassis of a bus.

Background

At present, the chassis of vehicles such as highway tourism passenger train adopts traditional syllogic structure, like a general pure electric passenger train chassis structure of patent CN105857398A, uses a large amount of rectangular pipe welding trusses, integrates the design inadequately, and welding structure is many, and production process is complicated, and manufacturing cost is high. Poor universalization effect, multiple structure types, large tooling mould investment, low vehicle type switching efficiency and long new product development period. And when the chassis wire harness is laid to current passenger train, need wear to draw from passageway skeleton below, because of the skeleton texture all adopts the welding mode to make, lead to the wire harness to lay the operation inconvenient, the low workman intensity of labour of installation effectiveness is big, inefficiency.

Disclosure of utility model

The utility model provides a passenger car underframe.

The utility model discloses a passenger car underframe, which comprises a drive axle module and is characterized in that the drive axle module comprises a front driving vertical piece structure arranged at the front end, the front driving vertical piece structure comprises at least one driving multi-interface casting, and the driving multi-interface casting comprises at least one connecting end for connecting a thrust rod or a stabilizing rod.

The driving front vertical piece structure comprises two driving multi-interface castings arranged side by side, each driving multi-interface casting comprises an upper connecting end, a lower connecting end and a stabilizer bar connecting end, wherein the upper connecting end is positioned at the upper end and used for connecting respective corresponding driving axle upper stabilizer bars, the lower connecting end is positioned at the lower end and used for connecting respective corresponding driving axle lower stabilizer bars, and the two driving multi-interface castings respectively comprise stabilizer bar connecting ends connected with the same driving axle stabilizer bar.

The driving front vertical piece structure comprises a left connecting rod arranged on the left side of the upper end of a left driving multi-interface casting and a right connecting rod arranged on the right side of the upper end of a right driving multi-interface casting, wherein a shock absorber support and an airbag support are respectively welded on the left connecting rod and the right connecting rod, an upper rod piece is welded between the upper ends of the two driving multi-interface castings, the central lines of the left connecting rod, the right connecting rod and the upper rod piece are overlapped, the driving bridge module further comprises a driving rear vertical piece structure arranged at the rear end, a driving left vertical piece structure connected with the driving front vertical piece structure and the driving rear vertical piece structure and a driving right vertical piece structure, the driving rear vertical piece structure is of a frame structure, and two shock absorber supports and two airbag supports are respectively arranged at positions, corresponding to the shock absorber and the airbag at the rear of the driving bridge.

The chassis further comprises a steering axle module, the steering axle module comprises a steering rear vertical piece structure arranged at the rear end, the steering rear vertical piece structure comprises two steering multi-interface castings arranged at the lower end side by side and two steering installation castings arranged above the steering multi-interface castings side by side, each steering multi-interface casting comprises a second stabilizer bar connecting end used for connecting a stabilizer bar of the steering axle and a second lower connecting end used for connecting a thrust bar below the steering axle, and each steering installation casting comprises a second upper connecting end used for connecting an upper thrust bar of the steering axle.

The steering axle module further comprises a steering left vertical piece structure and a steering right vertical piece structure, wherein the lower end of the steering left vertical piece structure is welded with the upper end of the steering multi-interface casting, the rear end of the steering right vertical piece structure is welded with the right steering truss, and the upper ends of the steering left vertical piece structure and the steering right vertical piece structure are respectively provided with a shock absorber mounting seat and a shock absorber mounting seat.

The chassis comprises a front axle module, wherein the front axle module comprises a front axle front vertical piece structure at the front end, a front axle rear vertical piece structure arranged at the rear end, a front axle left vertical piece structure, a front axle right vertical piece structure and a front and rear through beam, the front axle front vertical piece structure, the front axle right vertical piece structure and the front and rear through beam are connected with the front axle front vertical piece structure and the front axle rear vertical piece structure, the front axle left vertical piece structure and the front axle rear vertical piece structure are arranged at the middle position, two front axle installation castings which are arranged side by side and are used for installing an A-shaped swing arm are welded on the front axle left vertical piece structure and the front axle rear vertical piece structure, the front axle front vertical piece structure and the front axle rear vertical piece structure respectively are welded on two sides of the middle rod respectively, the left side surfaces of the front axle front vertical piece structure and the front axle rear vertical piece structure respectively are welded on two sides of the middle rod respectively, the front axle vertical piece structure is welded on two front axle rear vertical piece structure respectively, and front axle vertical piece structure respectively are welded on two front axle vertical piece respectively.

The upper end of the double-sided installation casting is welded with the bottom of the curved beam, two ends of the curved beam are respectively welded with corresponding positions of the left vertical piece structure and the right vertical piece structure of the front axle, the double-sided installation casting comprises a front installation groove and a rear installation groove which share the bottom surface, an upper installation table is arranged at the upper ends of the front installation groove and the rear installation groove, a lower installation table is arranged at the lower ends of the front installation groove and the rear installation groove, an upper through hole is arranged on the upper installation table, a lower through hole is arranged on the lower installation table, the left vertical piece structure of the front axle and the rear vertical piece structure of the front axle comprise basic trusses formed by rod pieces, the front axle installation casting is welded with the basic trusses, two installation through holes connected with A-shaped swing arms are arranged on the front axle installation casting, and an air bag installation piece and a shock absorber installation piece are arranged on the outer sides of the upper ends of the left vertical piece structure of the front axle and the right vertical piece structure of the rear axle.

The chassis comprises aisle modules, wherein the aisle modules comprise aisle beams which are distributed at intervals along the length direction of the aisle modules, and the aisle beams are detachably arranged on the aisle modules.

The aisle module comprises a left roller pressing beam and a right roller pressing beam, wherein a fixed support is welded at the lower end of the roller pressing beam, a part of the aisle module, which is not provided with the roller pressing beam, is provided with the fixed support on a chassis below the aisle module, two ends of the aisle beam are fixed on the upper surface of the fixed support through bolts, and an adhesive layer is arranged between the aisle beam and the fixed support as well as between the aisle beam and the contact surface of the roller pressing beam.

The chassis further comprises a front end module, a middle section module and a front end module, wherein the front end module is connected with the front axle module, a cuboid lifting frame space for installing an upgrading machine is arranged between trusses at the position of a middle door of the middle section module, two battery spaces for installing batteries are arranged above the lifting frame space, a reinforcing plate is arranged at the position, close to the middle door, of the middle section module, the rear end of the reinforcing plate is connected with the truss where the battery spaces are located, the chassis further comprises a front end module, the front end module is positioned at the forefront section, the rear end of the front end module is connected with the front axle module, and the main frames of the front end module are bilaterally symmetrical.

Compared with the prior art, the connecting structure has the beneficial effects that the functional parts for connecting the stress parts such as the stabilizer bar, the thrust bar, the A-shaped swing arm and the like are molded in a casting mode, and the connecting ends are integrally arranged, so that the connecting structure can simultaneously connect a plurality of thrust bars and the stabilizer bar, has better stress performance, and greatly simplifies the structure that the former truss structure adopting a plurality of welded bars can be used as the connecting ends of the thrust bars and the stabilizer bars.

Drawings

Fig. 1 is a correspondence diagram of a front view and a top view of the present utility model arranged up and down.

Fig. 2 is a schematic perspective view of a front end module.

Fig. 3 is a perspective view of the front axle module.

Fig. 4 is an exploded view of the front axle module.

Fig. 5 is an enlarged view of a space portion of the middle module battery.

Fig. 6 is a perspective view of a transaxle.

Fig. 7 is an exploded view of the drive axle.

Fig. 8 is a perspective view of a steering axle.

Fig. 9 is an exploded view of the steering axle.

Fig. 10 is an enlarged view of a portion of the steering rear riser structure of the steering axle (seen from the front side).

Fig. 11 is a perspective view of a aisle portion.

Fig. 12 is a schematic view of the connection of aisle beams.

FIG. 13 is a schematic diagram of a drive multi-interface casting.

FIG. 14 is a schematic view of a double-sided mounting casting.

Fig. 15 is a schematic view of a front axle mounting casting.

Fig. 16 is a schematic view of the front axle and front axle module assembled.

Fig. 17 is a top view of the drive module and steer axle module assembled with the drive axle and steer axle.

Fig. 18 is a bottom view of fig. 17.

The corresponding reference numbers in the figures correspond to the components with the names 1 being front end module, 2 being front axle module, 21 being front axle front vertical structure, 22 being front axle rear vertical structure, 23 being front axle left vertical structure, 24 being front axle right vertical structure, 25 being front and rear through beam, 26 being front axle mounting casting, 27 being double sided mounting casting, 28 being airbag mounting, 29 being damper mounting, 3 being middle section module, 30 being reinforcement plate, 31 being crane space, 32 being battery space, 4 being drive axle module, 41 being drive front vertical structure, 42 being drive rear vertical structure, 43 being drive left vertical structure, 44 being drive right vertical structure, 45 being drive multi-interface casting, 450 being upper connection end, 451 being lower connection end, 452 being stabilizer bar connection end, 46 being damper support, 47 being airbag support, 5 being steering axle module, 52 being steering rear vertical structure, 53 being steering left vertical structure, 54 being steering right vertical structure, 55 being steering multi-interface casting, 551 being second connection end 552 being a second connection end 560, 53 being a steering left vertical structure, 58 being a swing joint seat, 57 being a swing joint mounting seat, 57 being a swing joint; the rear section module 6, the aisle module 7 and the aisle module 70 are aisle crossbeams, the roller press beam 71, the fixed support 72, the driving axle stabilizer bar 8, the driving axle upper thrust bar 9, the driving axle lower thrust bar 10, the steering axle stabilizer bar 11, the steering axle upper thrust bar 12, the steering axle lower thrust bar 13, the air bag 14, the shock absorber 15 and the A-shaped swing arm 16.

Detailed Description

In the present utility model, unless explicitly specified and defined otherwise, technical terms used in the present utility model should be construed in a general sense as understood by those skilled in the art to which the present utility model pertains. The terms "connected," "fixedly," "disposed" and the like are to be construed broadly and can be fixedly connected, detachably connected or integrally formed, directly connected or indirectly connected through an intermediate medium, mechanically connected or electrically connected. Unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or in indirect contact via an intermediary. Moreover, a first feature being "above" or "over" or "upper" a second feature may be a first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under" or "beneath" or "under" the second feature may be the first feature being directly under or obliquely under the second feature, or simply indicating that the first feature is level less than the second feature. Relational terms such as first, second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Terms such as "center", "transverse", "longitudinal", "length", "width", "thickness", "height", "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "clockwise", "counterclockwise", etc. used in the description are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element in question must have a particular orientation, be constructed and operated in a particular orientation.

The technical scheme of the present utility model will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. As shown in fig. 1-18, a passenger car underframe comprises a drive axle module 4, wherein the drive axle module 4 comprises a front driving vertical piece structure 41 arranged at the front end, the front driving vertical piece structure 41 comprises at least one multi-interface driving casting 45, and the multi-interface driving casting 45 comprises at least one connecting end for connecting a thrust rod or a stabilizing rod. The connection end may be a connection end for connecting a thrust rod or a connection end for connecting a stabilizer rod. The same drive multi-interface casting 45 may be connected to one rod or to multiple rods. In the utility model, the functional parts for connecting the stress parts such as the stabilizer bar, the thrust bar, the A-shaped swing arm 16 and the like are molded in a casting mode, at least one connecting end is integrally arranged, the stress performance is better, and the structure of the thrust bar and the stabilizer bar connecting end 452 which can be only used by adopting a truss structure of a plurality of welded bars is greatly simplified.

Further, the front driving vertical piece structure 41 comprises two driving multi-interface castings 45 arranged side by side, each driving multi-interface casting 45 comprises an upper connecting end 450 positioned at the upper end and used for connecting with the corresponding driving axle upper thrust rod 9, a lower connecting end 451 positioned at the lower end and used for connecting with the corresponding driving axle lower thrust rod 10, and the two driving multi-interface castings 45 respectively comprise a stabilizer rod connecting end 452 connected with the same driving axle stabilizer rod 8. The front-rear direction may be referred to as a front-rear-left-right direction of a driver sitting on a seat. The drive axle is arranged on the drive axle module 4, and a stabilizer bar and four thrust bars are arranged between the drive axle and the drive front vertical plate structure 41. A spherical hinge or other common structures are arranged in the connecting end of the thrust rod and the stabilizing rod, and connecting holes are respectively formed in two ends of the connecting end. The upper connection end 450 and the lower connection end 451 are provided with corresponding connection holes corresponding to the connection ends of the thrust rod, and are connected by a structure such as a bolt. The upper connection end 450 and the lower connection end 451 may be provided with a relief hole as needed to give a space for installing the thrust rod.

The driving front vertical piece structure 41 comprises a left connecting rod arranged on the left side of the upper end of the left driving multi-interface casting 45 and a right connecting rod arranged on the right side of the upper end of the right driving multi-interface casting 45, the left connecting rod and the right connecting rod are respectively welded with a shock absorber support 46 and an air bag support 47, an upper rod piece is welded between the upper ends of the two driving multi-interface castings 45, the central lines of the left connecting rod, the right connecting rod and the upper rod piece coincide, the driving bridge module 4 further comprises a driving rear vertical piece structure 42 arranged at the rear end, a driving left vertical piece structure 43 and a driving right vertical piece structure 44 which are connected with the driving front vertical piece structure 41 and the driving rear vertical piece structure 42, and the driving rear vertical piece structure 42 is a frame structure, and two shock absorber supports 46 and two air bag supports 47 are respectively arranged at positions, corresponding to the rear shock absorbers 15 and the air bags 14 of the driving bridge. A lower rod member is welded between the lower ends of the two driving multi-interface castings 45. Preferably, the upper and lower bars may be upper and lower sides of the gab frame. The left end and the right end of the square frame are respectively welded with two driving multi-interface castings 45. The frame, two driving multi-interface castings 45, left and right connecting rods form the general shape of the driving front riser structure 41 on one plane. The stress between the drive axle and the underframe is concentrated on the front driving vertical piece structure 41, so that the stress can be greatly improved, and the structure of the drive axle module 4 is simplified. The driven left riser structure 43 may be a truss structure of a rod assembly welded to the driven front riser structure 41 by a plurality of rods. The damper support 46 and the airbag support 47 may be sheet metal parts. A damper support 46 is connected to the upper end of the damper and the air bag 14 is mounted on an air bag support 47. The damper support 46 and the air bearing 47 are provided with required mounting holes and mounting plates, and the specific mounting is not described in detail. The front driving vertical piece structure 41 fully utilizes the design thought of integrating parts, integrates structural parts and functional parts, integrates a plurality of independent and scattered parts, and successfully realizes the integration of the original 56 parts into 2 integrated driving multi-interface castings 45. After the parts are integrated, 56 parts are reduced in production, welding seams at about 224 parts are reduced, the working time of a bicycle is saved by about 336 minutes, the weight of the bicycle is reduced by 18kg, meanwhile, the bending rigidity and the torsional rigidity of the structure are respectively improved by 5% and 7%, the strength of the whole bicycle is improved by an integrated casting, and the reliability of the product is improved. The integrated meter concept of the parts is realized by integrating the structural parts, integrating the frame with the upper thrust rod support, integrating the lower thrust rod support with the stabilizer bar support, replacing diagonal bracing with stamping parts, integrating wire passing holes with the bracket, applying large-specification sectional materials and the like, and reducing the number and weight of the parts.

Or the underframe further comprises a steering axle module 5, wherein the steering axle module 5 comprises a steering rear vertical piece structure 52 arranged at the rear end, the steering rear vertical piece structure 52 comprises two steering multi-interface castings 55 arranged at the lower end side by side and two steering mounting castings 56 arranged above the steering multi-interface castings 55 side by side, each multi-interface casting comprises a second stabilizer bar connecting end 552 for connecting a stabilizer bar 11 of the steering axle and a second lower connecting end 551 for connecting a thrust bar 13 below the steering axle, and each steering mounting casting 56 comprises a second upper connecting end 560 for connecting an upper thrust bar 12 of the steering axle. The second lower connection end 551 is located below the second stabilizer connection end 552. The steering mounting castings 56 are positioned at the upper and outer side positions of the corresponding steering multi-interface castings 55, and the specific position relation is related to the positions of the steering axle upper thrust rod 12, the steering axle lower thrust rod 13 and the steering axle stabilizer rod 11 on the frame and is set according to requirements. The second stabilizer link 552, the second upper link 560, and the second lower link 551 are provided with corresponding holes or slots, and are connected to the corresponding thrust rod and the stabilizer rod by means of bolts or other mechanisms, and the specific connection structure with the stabilizer rod or the thrust rod belongs to the prior art, and will not be described in detail. The steering axle may include 2 steering axle upper thrust rods 12, 2 steering axle lower thrust rods 13, and one steering axle stabilizer rod 11. The steering mounting casting 56 and the steering multi-interface casting 55 are welded with the rest of the bars of the steering rear vertical plate structure 52. According to the utility model, the interfaces of the stress parts such as the stabilizer bar and the thrust bar are arranged on special castings, and the truss structure is replaced by castings with a plurality of interfaces, so that the complexity of the truss can be effectively reduced, the stress is improved, and the structure of the underframe is simplified. Wherein the structure of the steering mounting casting 56 and the steering multi-interface casting 55 is determined according to the location of the connection end and the mechanical properties required by the structure. In a specific embodiment, the main body of the steering multi-interface casting 55 may be a plate structure, the upper part of the front surface is provided with a second stabilizer bar connecting end 552 forward, the lower part of the front surface is provided with a second lower connecting end 551, the back of the second stabilizer bar connecting end 552 is provided with a transverse plate, and the left side is provided with a connecting side surface with the movable beam 57. The cross plates are welded to the trusses of the rear steering riser structure 52.

A detachable movable beam 57 is arranged between the two steering multi-interface castings 55, the steering rear vertical piece structure 52 further comprises an upward left steering truss welded on the left side of the left multi-interface castings and an upward right steering truss welded on the right side of the right multi-interface castings, the left steering truss and the right steering truss are distributed and welded with corresponding steering mounting castings 56, the steering bridge module 5 further comprises a steering left vertical piece structure 53 and a steering right vertical piece structure 54, the lower end of the steering left vertical piece structure 53 is welded with the upper end of the steering multi-interface castings 55, the rear end of the steering right vertical piece structure 54 is welded with the right steering truss, and shock absorber mounting seats 58 and air bag mounting seats 59 are respectively arranged at the upper ends of the steering left vertical piece structure 53 and the steering right vertical piece structure 54. The damper mount 58 and the air bladder mount 59 may be sheet metal parts. The upper ends of the left steering truss and the right steering truss can be connected through a rod piece. The steer axle module 5 may also include a steer front riser structure or be welded directly to the front module by steering left riser structure 53 and steering right riser structure 54. The movable beam 57 comprises a beam body and a beam end welded at the beam end, the beam end is connected with the corresponding side face of the multi-interface steering casting 55 through bolts, the movable beam 57 is finally installed on the frame through a worker, and the worker is required to detach the movable beam 57 during maintenance. In the existing structure, in order to ensure the mechanical property of the frame, the movable beam 57 needs to be made to be relatively large, and the weight of the movable beam is twenty kilograms or more. After the structure is improved by adopting the casting as the stress piece, the weight of the movable beam 57 is only about 3kg, so that the movable beam is greatly convenient for workers to install and detach. The damper mount 58 and the air bag mount 59 may be constructed in accordance with the prior art, including, for example, a base plate having mounting holes formed therein. The utility model relates to a steering rear vertical plate structure 52, which fully utilizes the design thought of integrating parts, integrates structural parts and functional parts, and integrates a plurality of independent and scattered parts into 2 integrated multi-interface castings. After the parts are integrated, 10 parts are reduced in production, about 24 welding seams are reduced, the working time of a bicycle is saved by about 56 minutes, the weight of the bicycle is reduced by 13kg, the strength of the whole bicycle is improved by the integrated casting, and the reliability of the product is improved.

Or the underframe comprises a front axle module 2, wherein the front axle module 2 comprises a front axle front vertical piece structure 21 at the front end, a front axle rear vertical piece structure 22 arranged at the rear end, a front axle left vertical piece structure 23, a front axle right vertical piece structure 24 and a front and rear through beam 25 which are connected with the front axle front vertical piece structure 21 and the front axle rear vertical piece structure 22, the front and rear through beam 25 is arranged at the middle position of the bottom, two front axle installation castings 26 which are arranged side by side and are used for installing an A-shaped swing arm 16 are welded on the front axle left vertical piece structure 23 and the front axle rear vertical piece structure 22, the front and rear through beam 25 comprises a middle rod respectively and double-sided installation castings 27 which are welded at the two ends of the middle rod respectively, the left side surfaces of the front axle front vertical piece structure 21 and the front axle rear vertical piece structure 22 are welded at the corresponding sides respectively, the left side surfaces of the two double-sided installation castings 27 are used for installing two ends of the A-shaped swing arm 16, and the right side surfaces of the two double-sided installation castings 27 are used for installing two ends of the A-shaped swing arm 16. The front axle comprises four A-shaped swing arms 16, two A-shaped swing arms 16 are arranged at the upper ends of the four A-shaped swing arms 16, two ends of one A-shaped swing arm 16 are respectively connected with two front axle installation castings 26 of a front axle left vertical piece structure 23, and two ends of the other A-shaped swing arm 16 are respectively connected with two front axle installation castings 26 of a front axle right vertical piece structure 24. The two A-shaped swing arms 16 at the lower end are respectively connected with two double-sided mounting castings 27 at the same side.

The upper end of the double-sided mounting casting 27 is welded with the bottom of the curved beam, two ends of the curved beam are respectively welded with the corresponding positions of the left vertical plate structure 23 and the right vertical plate structure 24 of the front axle, the double-sided mounting casting 27 comprises a front mounting groove and a rear mounting groove which share the bottom surface, an upper mounting table is arranged at the upper end of the front mounting groove and the rear mounting groove, a lower mounting table is arranged at the lower end of the front mounting groove, an upper through hole is arranged on the upper mounting table, a lower through hole is arranged on the lower mounting table, the left vertical plate structure 23 of the front axle and the right vertical plate structure 22 of the front axle comprise basic trusses formed by rod pieces, the front axle mounting casting 26 is welded with the basic trusses, two mounting through holes connected with the A-shaped swing arm 16 are arranged on the front axle mounting casting 26, and an air bag mounting piece 28 and a shock absorber mounting piece 29 are arranged outside the upper ends of the left vertical plate structure 23 of the rear axle and the right vertical plate structure of the front axle respectively. The structure of the concrete casting and the damper mount 29 and the air bladder mount 28 may be sheet metal structures, with bends and through holes provided thereon as desired. Wherein the front axle front vertical sheet structure 21 and the front axle rear vertical sheet structure 22 are truss structures formed by welding rod pieces. Four mounting surfaces at the rear end of the front axle mounting casting 26 are embedded in lattices on the basic truss, and the upper end extends out of one mounting surface to be welded with a rod piece of the basic truss. An aperture is provided in the middle of the front axle mounting casting 26. The connection mode of the ends of the a-shaped swing arm 16 belongs to the prior art, and the structure corresponding to the mounting surface and the mounting through hole also belongs to the prior art, and will not be described in detail. The curved beam is used to strengthen the structure. The front and rear through beams 25 integrate structural members with functional members, so that the integral member can replace a complex splice welding member, the production cost is reduced, and the number of parts is reduced.

Or the underframe comprises aisle modules 7, wherein the aisle modules 7 comprise aisle cross beams 70 which are distributed at intervals along the length direction of the aisle modules 7, and the aisle cross beams 70 are detachably arranged on the aisle modules 7. The detachable connection mode can be a bolt connection mode and the like. After the welding of the underframe of the passenger car is finished, the whole anti-corrosion treatment is needed, and then the threading is carried out. The aisle cross beam 70 is arranged on the underframe in a non-welding mode. After the rest of the underframe is installed, the anti-corrosion treatment is carried out, then the threading is carried out, and the cross beam 70 is installed on the aisle module 7 after the threading, so that the threading difficulty can be effectively reduced, and the working efficiency is improved.

The aisle module 7 comprises a left roller press beam 71 and a right roller press beam 71, wherein a fixed support 72 is welded at the lower end of the roller press beam 71, a part of the aisle module 7, which is not provided with the roller press beam 71, is provided with the fixed support 72 on a bottom frame below the aisle module 7, two ends of the aisle cross beam 70 are fixed on the upper surface of the fixed support 72 through bolts, and an adhesive layer is arranged between the aisle cross beam 70 and the fixed support 72 as well as between the aisle cross beam 70 and the contact surface of the roller press beam 71. The grooves of the left and right roller beams 71 are provided with profiled rollers to improve bending stiffness and torsional stiffness. The aisle module 7 has no portion provided with roller beams 71, typically a mid-vehicle door attachment. The aisle module 7 is changed into a bolting and bonding process by welding, so that the chassis wire harness threading, changing and paving efficiency is improved, the whole vehicle working hour is shortened, the manufacturing cost is reduced, the structural reliability is improved by using the special-shaped rolling piece, and the core competitiveness of the product is improved. Other common means of removable attachment and mounting locations are within the scope of the present utility model.

The chassis further comprises a middle section module 3, the front end of which is connected with the front axle module 2 and the rear end of which is connected with the driving axle module 4, a cuboid-shaped lifting frame space 31 for installing an upgrading machine is arranged between trusses at the middle door of the middle section module 3, two battery spaces 32 for installing batteries are arranged above the lifting frame space 31, a reinforcing plate 30 is arranged at the position, close to the middle door, of the middle section module 3, the rear end of the reinforcing plate 30 is connected with the truss where the battery spaces 32 are located, the chassis further comprises a front end module positioned at the forefront section, the rear end of the front end module 1 is connected with the front axle module 2, and the main frames of the front end modules are bilaterally symmetrical. The cell spaces 32 may be provided with one or more cells as desired, with each cell space 32 being truss-isolated. In the utility model, a plurality of batteries can be arranged at the middle door position. The presence of the battery space 32 results in insufficient strength here, and thus the provision of the reinforcing plate 30 increases strength. The front-end mode main frame is bilaterally symmetrical, which means that the rest parts are bilaterally symmetrical except the structure which cannot be arranged in bilateral symmetry, and the front-end mode main frame is specially arranged below the position where the cab is located. In the structure, the structures of the left rudder car and the right rudder car are changed with each other, only the positions of a few connected rod pieces are needed to be changed, and only one set of die can be used for manufacturing the die. And the requirement of simultaneously being compatible with the left rudder and the right rudder is realized by adjusting the mounting point of the driver chair.

The utility model can comprise a front end module 1, a front axle module 2, a middle section module 3, a driving axle module 4, a steering axle module 5 and a rear section module 6 from front to back in the drawing, and a road module is arranged above the front end module and the middle section module. The front end module 1 mainly comprises a front anti-collision beam, a driver chair integral backward moving module after collision, a battery side anti-collision beam mounting beam, a middle millimeter wave radar mounting beam, a bottom anti-scratch beam, an anti-collision energy absorbing piece, a longitudinal left side arc bending beam, a longitudinal right side arc bending beam, a transverse connecting beam, a trailer hook beam, a driver chair fixing support 72, a power battery support, a reinforcing angle and the like. The rear section module 6 can report and examine including a left vertical piece, a right vertical piece, an anti-collision beam, a left vertical piece of a driving motor, a right vertical piece of the driving motor, a power battery bracket, a trailer hook, an extension beam, a lower movable beam 57 of the driving motor and the like. These are of the prior art and will not be described in detail. In practice, the utility model can be applied to various motor vehicles such as passenger cars, trucks and the like, can be applied to the field of electric cars and also can be applied to the field of oil vehicles. The drive axle module 4 can be selected or cancelled according to the vehicle type, and the middle section module 3 can be made into modules with different lengths according to actual requirements and can be assembled in sections. The front axle module 2, the driving axle module 4, the rear axle module and the like can be expanded to all vehicle types of the platform for use, and the design workload of the subsequent new vehicle type is reduced by 30%. The integrated design thought of the parts is fully utilized, the structural parts and the functional parts are integrated, the integrated parts replace complex splice welding parts, the integrated castings improve the strength of the whole automobile, the reliability of the product is improved, the production cost is reduced, and the number of the parts is reduced.

The utility model adopts the modular combination design thought of the assembly, decomposes the assembly into modules, realizes the product development mode with invariable strain, and can popularize the generalized module integrated in the earlier stage to the new product application. After universalization, mass production is realized, and an integrated die casting technology is introduced, so that the number of parts and the production cost are further reduced. And the modularized fixture is adopted, so that the modularized fixture is suitable for various product development modes, and the manual work is replaced by automatic robot welding. In addition, the utility model fully uses the design thought of integrating the parts, integrates the structural parts and the functional parts, realizes that the integral parts replace complex splice-welded parts, reduces the production cost and reduces the number of the parts. The method can be used for rapidly realizing high-end product layout and high-end capacity construction, and lays a good foundation for subsequent mass automatic production and manufacture by applying design concepts such as component integration and assembly modularization, so that the product competitiveness is further improved.

Any combination of the features of the above-described embodiments is possible, and the combination of the features should be regarded as the scope of the present description as long as there is no contradiction. The technical proposal, equivalent substitution or change, and several changes and improvements made according to the utility model are considered to be the protection scope of the utility model without departing from the general conception of the utility model.

Claims (10)

1. The chassis of the passenger car comprises a drive axle module and is characterized in that the drive axle module comprises a front driving vertical piece structure arranged at the front end, the front driving vertical piece structure comprises at least one driving multi-interface casting, and the driving multi-interface casting comprises at least one connecting end for connecting a thrust rod or a stabilizing rod.

2. The chassis of a passenger car according to claim 1, wherein the front driving vertical piece structure comprises two driving multi-interface castings arranged side by side, each driving multi-interface casting comprises an upper connecting end located at the upper end and used for being connected with a corresponding driving axle upper thrust rod, a lower connecting end located at the lower end and used for being connected with a corresponding driving axle lower thrust rod, and the two driving multi-interface castings respectively comprise a stabilizer rod connecting end connected with a same driving axle stabilizer rod.

3. The chassis of a passenger car according to claim 2, wherein the driving front vertical plate structure comprises a left connecting rod arranged on the left side of the upper end of the left driving multi-interface casting and a right connecting rod arranged on the right side of the upper end of the right driving multi-interface casting, the left connecting rod and the right connecting rod are respectively welded with a shock absorber support and an air bag support, an upper rod piece is welded between the upper ends of the two driving multi-interface castings, central lines of the left connecting rod, the right connecting rod and the upper rod piece coincide, the driving bridge module further comprises a driving rear vertical plate structure arranged at the rear end, a driving left vertical plate structure and a driving right vertical plate structure, wherein the driving rear vertical plate structure is a frame structure, and two shock absorber supports and two air bag supports are respectively arranged at positions, corresponding to the rear shock absorber and the air bags of the driving bridge.

4. The chassis of claim 1, further comprising a steer axle module including a steer rear riser structure disposed at a rear end, the steer rear riser structure including two steer multi-interface castings disposed side-by-side at a lower end and two steer mounting castings disposed side-by-side above the steer multi-interface castings, each of the steer multi-interface castings including a second stabilizer bar connection end for connecting a stabilizer bar of the steer axle and a second lower connection end for connecting a lower thrust bar of the steer axle, and each of the steer mounting castings including a second upper connection end for connecting an upper thrust bar of the steer axle.

5. The chassis of a passenger car according to claim 4, wherein a detachable movable beam is arranged between two steering multi-interface castings, the steering rear vertical piece structure further comprises an upward left steering truss welded on the left side of the left multi-interface casting and an upward right steering truss welded on the right side of the right multi-interface casting, steering mounting castings corresponding to the corresponding measurement are distributed and welded on the left steering truss and the right steering truss, the steering bridge module further comprises a steering left vertical piece structure and a steering right vertical piece structure, the lower end of the steering left vertical piece structure is welded with the upper end of the steering multi-interface casting, the rear end of the steering left vertical piece structure is welded with the left steering truss, the lower end of the steering right vertical piece structure is welded with the upper end of the steering multi-interface casting, the rear end of the steering right vertical piece structure is welded with the right steering truss, and the upper ends of the steering left vertical piece structure and the steering right vertical piece structure are respectively provided with a shock absorber mounting seat and an air sac mounting seat.

6. The chassis of a passenger car according to claim 1, wherein the chassis comprises a front axle module, the front axle module comprises a front axle front vertical piece structure, a front axle rear vertical piece structure, a front axle left vertical piece structure, a front axle right vertical piece structure and a front and rear through beam, wherein the front axle front vertical piece structure, the front axle rear vertical piece structure, the front axle left vertical piece structure, the front axle right vertical piece structure and the front and rear through beam are arranged at the middle positions of the bottom, two front axle installation castings which are arranged side by side and are used for installing an A-shaped swing arm are welded on the front axle left vertical piece structure and the front axle rear vertical piece structure, the front and rear through beam comprises a middle rod respectively and double-sided installation castings which are welded at two ends of the middle rod respectively, the front axle front vertical piece structure and the front axle rear vertical piece structure are respectively welded at corresponding sides, the left side surfaces of the two double-sided installation castings are used for installing two ends of the A-shaped swing arm, and the right side surfaces of the two double-sided installation castings are respectively installed at two ends of the A-shaped swing arm.

7. The chassis of a passenger car according to claim 6, wherein the upper end of the double-sided mounting casting is welded with the bottom of the curved beam, two ends of the curved beam are welded with corresponding positions of the left vertical plate structure and the right vertical plate structure of the front axle respectively, the double-sided mounting casting comprises a front mounting groove and a rear mounting groove which share the bottom surface, an upper mounting table and a lower mounting table are arranged at the upper ends of the front mounting groove and the rear mounting groove, an upper through hole is arranged on the upper mounting table, a lower through hole is arranged on the lower mounting table, the left vertical plate structure of the front axle and the rear vertical plate structure of the front axle respectively comprise a basic truss formed by rod pieces, the front axle mounting casting is welded with the basic truss, two mounting through holes connected with A-shaped swing arms are arranged on the front axle mounting casting, and an air bag mounting piece and a shock absorber mounting piece are arranged outside the upper ends of the left vertical plate structure of the front axle and the right vertical plate structure of the rear axle respectively.

8. The passenger car chassis of claim 1, wherein the chassis comprises aisle modules, the aisle modules comprise aisle beams distributed at intervals along the length direction of the aisle modules, and the aisle beams are detachably arranged on the aisle modules.

9. The chassis of a passenger car according to claim 8, wherein the aisle module comprises a left roller press beam and a right roller press beam, a fixed support is welded at the lower end of the roller press beam, a fixed support is arranged on the chassis below the aisle module at the part where the roller press beam is not arranged, two ends of the aisle cross beam are fixed on the upper surface of the fixed support through bolts, and an adhesive layer is arranged between the contact surfaces of the aisle cross beam, the fixed support and the roller press beam.

10. The chassis of claim 1, wherein the chassis further comprises a front end connected with a front axle module, a middle section module with a rear end connected with a driving axle module, a cuboid-shaped lifting frame space for installing an upgrading machine is arranged between trusses at the middle door position of the middle section module, two battery spaces for installing batteries are arranged above the lifting frame space, a reinforcing plate is arranged at the position, close to the middle door, of the middle section module, the rear end of the reinforcing plate is connected with the truss where the battery space is located, the chassis further comprises a front end module at the forefront section, the rear end of the front end module is connected with the front axle module, and the main frames of the front end module are bilaterally symmetrical.