Assembling device and method for vehicle chassis, vehicle chassis and vehicle

Abstract

An assembling device and method for a vehicle chassis (2), the vehicle chassis (2) and a vehicle (1000a). The assembling device comprises: a substrate (31); and a raising / lowering apparatus, arranged on the substrate (31) and movably connected to the substrate (31) in the vertical direction (Z) of the substrate (31), wherein the raising / lowering apparatus is configured to carry and position a front engine compartment assembly (21) and a rear floor assembly (23), and / or carry and position a middle section assembly (22), the raising / lowering apparatus moves relative to the substrate (31) in the vertical direction (Z) so as to realize the assembly connection between the front engine compartment assembly (21) and the middle section assembly (22) and between the rear floor assembly (23) and the middle section assembly (22).

Description

Assembly equipment and assembly method of vehicle chassis, vehicle chassis and vehicle

[0001] This application claims priority to Chinese patent application No. 2023118456450, filed on December 28, 2023, entitled “Assembly equipment and assembly method for vehicle chassis, vehicle chassis and vehicle”, which is incorporated herein by reference in its entirety.

Technical field

[0002] The present application relates to the field of vehicle technology, and in particular to assembly equipment for a vehicle chassis, an assembly method for a vehicle chassis, a vehicle chassis, and a vehicle. [Background Technology]

[0003] As an indispensable independent product of a vehicle, the consistency and dimensional accuracy of the vehicle chassis have a great impact on the overall performance of the vehicle.

[0004] To improve production line efficiency and workshop space utilization, multiple components can be assembled to form a vehicle chassis. In related technologies, assembly typically requires simultaneous insertion and alignment of components and insertion of locating pins, making assembly difficult. When there is an interference fit between the overlapping surfaces of the components, locating pins may not be inserted or may be offset, resulting in poor dimensional accuracy and consistency in the assembled product.

[0005] [Summary of the invention]

[0006] In view of the above problems, the vehicle chassis assembly equipment, vehicle chassis assembly method, vehicle chassis and vehicle provided in this application can improve the dimensional accuracy and consistency of the product after the vehicle chassis is assembled.

[0007] In a first aspect, the present application provides an assembly device for a vehicle chassis. The vehicle chassis includes a mid-section assembly, a front cabin assembly, and a rear floor assembly; the assembly device includes: a base plate; a lifting device, which is arranged on the base plate and movably connected to the base plate in a vertical direction of the base plate. The lifting device is configured to carry and position the front cabin assembly and the rear floor assembly, and / or carry and position the mid-section assembly. The lifting device moves in a vertical direction relative to the base plate to achieve the splicing and assembly between the front cabin assembly and the rear floor assembly and the mid-section assembly, especially a plug-in or lap-jointed assembly connection. This embodiment uses the lifting device to achieve the relative movement of the front cabin assembly and the rear floor assembly and the mid-section assembly in the vertical direction of the base plate. The splicing and assembly between the front cabin assembly and the rear floor assembly and the mid-section assembly can be achieved through the relative movement between the front cabin assembly and the rear floor assembly and the mid-section assembly, which can reduce the difficulty of assembly and improve the assembly accuracy, and can improve the dimensional accuracy and consistency of the product after the vehicle chassis is assembled.

[0008] In some embodiments, the base plate is provided with a first bearing part, a second bearing part and a third bearing part, the second bearing part is located between the first bearing part and the third bearing part, and is configured to carry and position the middle section assembly; the lifting device includes two first lifting mechanisms, which are respectively provided on the first bearing part and the third bearing part, and are movably connected to the base plate along the vertical direction of the base plate, and are respectively configured to carry and position the front cabin assembly and the rear floor assembly; one first lifting mechanism drives the front cabin assembly to move in the vertical direction relative to the base plate to realize the assembly connection between the front cabin assembly and the middle section assembly, and the other first lifting mechanism drives the rear floor assembly to move in the vertical direction relative to the base plate to realize the assembly connection between the rear floor assembly and the middle section assembly. By using the same base plate to support the middle section assembly and the first lifting mechanism for supporting the front cabin assembly and the first lifting mechanism for supporting the rear floor assembly, the middle section assembly, the front cabin assembly and the rear floor assembly can be assembled together based on the same carrier, that is, the base plate. Therefore, the relative stability of the middle section assembly, the front cabin assembly and the rear floor assembly during assembly can be improved, thereby improving the dimensional accuracy and consistency of the product after the vehicle chassis is assembled. Furthermore, in this embodiment, a first lifting mechanism is used to support and position the front cabin assembly and realize the relative movement of the front cabin assembly and the middle section assembly along the vertical direction of the base plate, and the assembly connection between the two can be realized through the relative movement between the two. Therefore, in this embodiment, the front cabin assembly can be first positioned at a high position using the first lifting mechanism, and then the front cabin assembly and the mid-section assembly can be assembled and connected through the lifting movement, which can reduce the assembly difficulty and improve the assembly precision. In this embodiment, the rear floor assembly can be positioned by another first lifting mechanism, and the rear floor assembly can be moved relative to the mid-section assembly along the vertical direction of the base plate. The assembly connection between the two can be achieved through the relative movement between the two. Therefore, in this embodiment, the rear floor assembly can be first positioned at a high position using the first lifting mechanism, and then the rear floor assembly and the mid-section assembly can be assembled and connected through the lifting movement, which can reduce the assembly difficulty and improve the assembly precision. Therefore, this embodiment can improve the dimensional accuracy and consistency of the assembled vehicle chassis.

[0009] In some embodiments, the first lifting mechanism includes: a first driving mechanism, which is disposed on a base plate; a first lifting platform, which is connected to the first driving mechanism, wherein the first driving mechanism drives the first lifting platform to move in a vertical direction relative to the base plate, and the first lifting platform is configured to carry the front cabin assembly or the rear floor assembly. The first driving mechanism and the first lifting platform are used to implement the first lifting mechanism. The first driving mechanism and the first lifting platform are used to implement the first lifting mechanism. On the one hand, the structure is simple, easy to implement, and easy to control. On the other hand, the first lifting platform can increase the load-bearing area of ​​the front cabin assembly and improve the stability of the front cabin assembly during the lifting process. The first lifting platform can increase the load-bearing area of ​​the rear floor assembly and improve the stability of the rear floor assembly during the lifting process, thereby improving the assembly accuracy of the vehicle chassis. On the other hand, it is convenient to set components such as positioning and fastening mechanisms on the above-mentioned lifting platform to increase the positioning stability and positioning accuracy of the front cabin assembly or the rear floor assembly.

[0010] In some embodiments, the first lifting mechanism further comprises a guide assembly disposed on the base plate and movably connected to the first lifting platform, such that the first lifting platform moves vertically relative to the base plate under the limiting action of the guide assembly. The guide assembly disposed on the base plate for limiting the vertical movement of the first lifting platform can improve the precision of the lifting motion of the first lifting platform, thereby improving the assembly precision and post-assembly consistency of the vehicle chassis.

[0011] In some embodiments, a guide post is provided on the side of the first lifting platform close to the base plate, and the guide assembly includes a linear bearing, the base of the linear bearing being fixedly mounted on the base plate, and the guide post being at least partially mounted within the linear bearing. The base of the linear bearing being mounted on the base plate can improve its stability; the guide post being provided on the side of the first lifting platform close to the base plate can reduce the impact of the guide post on other components and improve the smoothness of the lifting of the first lifting platform; further, because the linear bearing has a high lifting accuracy and the offset within the parallel plane of the base plate is very small, the lifting accuracy of the first lifting platform can be improved, thereby improving the assembly accuracy and consistency of the vehicle chassis after assembly.

[0012] In some embodiments, the guide assembly includes a plurality of linear bearings. A plurality of evenly spaced guide posts are disposed on the outer periphery of the first lifting platform near the substrate, and the linear bearings are disposed in a one-to-one correspondence with the guide posts. The evenly spaced guide posts and corresponding linear bearings on the outer periphery of the first lifting platform near the substrate improve the smoothness of the lifting of the first lifting platform and reduce the impact of the linear bearings and guide posts on other components.

[0013] In some embodiments, the first lifting mechanism further comprises: a first clamping mechanism disposed on a side of the first lifting platform facing away from the base plate, and configured to secure the front cabin assembly or the rear floor assembly located on the first lifting platform to the first lifting platform. Securely securing the front cabin assembly to the first lifting platform by the first clamping mechanism disposed on the first lifting platform, and securing the rear floor assembly to the first lifting platform by the first clamping mechanism disposed on the first lifting platform, can improve the stability of the front cabin assembly and the rear floor assembly during the lifting process, thereby improving their positioning accuracy, thereby improving the assembly accuracy and post-assembly consistency of the front cabin assembly, the rear floor assembly, and the mid-section assembly.

[0014] In some embodiments, the first clamping mechanism includes: a first clamping assembly disposed on a side of the first lifting platform facing away from the base plate, wherein the fastening direction of the first clamping assembly is the same as the vertical direction; and a second clamping assembly disposed on a side of the first lifting platform facing away from the base plate, wherein the fastening direction of the second clamping assembly is perpendicular to the vertical direction. The first clamping assembly and the second clamping assembly are used to respectively fasten the front cabin assembly (rear floor assembly) on the first lifting platform in the vertical direction and in a direction perpendicular to the base plate, thereby reducing the deviation of the front cabin assembly (rear floor assembly) in the vertical direction and in a direction perpendicular to the base plate, thereby improving the stability of the front cabin assembly and the rear floor assembly during the lifting process, improving their positioning accuracy, and thereby improving the assembly accuracy and consistency of the front cabin assembly, the rear floor assembly, and the mid-section assembly after assembly.

[0015] In some embodiments, the first lifting mechanism further includes: a first positioning mechanism, disposed on a base plate, configured to limit the position of the front cabin assembly or the rear floor assembly on the plane where the first lifting platform is located. Utilizing the first positioning mechanism to limit the position of the front cabin assembly on the plane where the first lifting platform is located, and utilizing the first positioning mechanism to limit the position of the front cabin assembly on the plane where the first lifting platform is located, can improve the stability of the front cabin assembly and the rear floor assembly during the lifting process, and improve their positioning accuracy, thereby improving the assembly accuracy and post-assembly consistency of the front cabin assembly, the rear floor assembly, and the mid-section assembly. Furthermore, arranging the first positioning mechanism and the first positioning mechanism on the base plate can reduce the problem of positioning deviation of the front cabin assembly and the rear floor assembly caused by the offset between the first lifting mechanism and the base plate.

[0016] In some embodiments, the first positioning mechanism includes: a second drive mechanism disposed on a base plate; and a positioning pin connected to the second drive mechanism and capable of vertically extending and retracting under the drive of the second drive mechanism. The use of the vertically extendable positioning pin to implement the first positioning mechanism can coordinate with the height of the first lifting platform, enabling the first lifting mechanism to position the front cabin assembly and rear floor assembly at a predetermined height. After assembly of the vehicle chassis is complete, the positioning pin can be retracted to minimize interference with the lower chassis components.

[0017] In some embodiments, the assembly equipment further includes a second lifting mechanism disposed on the second supporting portion, configured to support and position the midsection assembly, and configured to move the midsection assembly vertically away from the base plate after the midsection assembly, front cabin assembly, and rear floor assembly are assembled. The second lifting mechanism serves as an assembly lifting mechanism for the vehicle chassis. After the midsection assembly, front cabin assembly, and rear floor assembly are assembled, the second lifting mechanism is used to lift the assembled vehicle chassis out of the vehicle, thereby removing the vehicle chassis components.

[0018] In some embodiments, the second lifting mechanism includes: a third drive mechanism disposed on a base plate; a second lifting platform connected to the third drive mechanism, the third drive mechanism driving the second lifting platform to move vertically relative to the base plate, the second lifting platform being configured to support the mid-section assembly. Utilizing the third drive mechanism and the second lifting platform to implement the second lifting mechanism provides, on the one hand, a simple structure, ease of implementation, and control; on the other hand, the second lifting platform can increase the load-bearing area of ​​the mid-section assembly, improving the stability of the mid-section assembly during the lifting process, thereby improving the assembly accuracy of the vehicle chassis; yet another aspect facilitates the installation of components such as a positioning and fastening mechanism on the second lifting platform to increase the positioning stability and accuracy of the mid-section assembly.

[0019] In some embodiments, the second lifting mechanism further comprises a second clamping mechanism disposed on the second supporting portion and configured to secure the midsection assembly located on the second lifting platform to the second lifting platform. Securely securing the midsection assembly to the second lifting platform via the second clamping mechanism disposed on the second lifting platform improves the stability of the midsection assembly during the lifting process and its positioning accuracy, thereby improving the assembly accuracy and post-assembly consistency of the front cabin assembly, the rear floor assembly, and the midsection assembly.

[0020] In some embodiments, the second lifting mechanism further comprises a second positioning mechanism, disposed on the base plate and configured to define the position of the mid-section assembly on the plane of the second lifting platform. Using the second positioning mechanism to define the position of the mid-section assembly on the plane of the second lifting platform improves the stability of the mid-section assembly during lifting and increases its positioning accuracy, thereby enhancing the assembly accuracy and post-assembly consistency of the front cabin assembly, rear floor assembly, and mid-section assembly. Furthermore, placing the second positioning mechanism on the base plate can mitigate the problem of mid-section assembly positioning deviation caused by offset between the second lifting mechanism and the base plate.

[0021] In a second aspect, the present application provides a method for assembling a vehicle chassis. The vehicle chassis assembly method is used for assembling equipment, the assembly equipment including a base plate and a lifting device disposed on the base plate, and the vehicle chassis including a midsection assembly, a front cabin assembly, and a rear floor assembly. The assembly method includes: raising the lifting device to a preset height; placing the front cabin assembly and the rear floor assembly on the lifting device, and moving the lifting device with the front cabin assembly and the rear floor assembly relative to the base plate in a vertical direction until the front cabin assembly and the rear floor assembly located on the lifting device are assembled with the midsection assembly located above the base plate; and / or placing the midsection assembly on the lifting device, and moving the lifting device with the midsection assembly located relative to the base plate in a vertical direction until the midsection assembly located on the lifting device is assembled with the front cabin assembly and the rear floor assembly located above the base plate.

[0022] In some embodiments, the lifting device includes two first lifting mechanisms, and the above-mentioned lifting of the lifting device to a preset height includes: respectively lifting the two first lifting mechanisms to a first preset height and a second preset height above the base plate; the above-mentioned setting of the front cabin assembly and the rear floor assembly on the lifting device, and moving the lifting device provided with the front cabin assembly and the rear floor assembly relative to the base plate along the vertical direction of the base plate until the front cabin assembly and the rear floor assembly located on the lifting device are assembled with the middle section assembly located above the base plate, including: setting the front cabin assembly on one first lifting mechanism, setting the middle section assembly on the base plate, and setting the rear floor assembly on another first lifting mechanism; lowering the first lifting mechanism provided with the front cabin assembly until the front cabin assembly and the middle section assembly are assembled, and lowering the first lifting mechanism provided with the rear floor assembly until the rear floor assembly and the middle section assembly are assembled.

[0023] In some embodiments, a first positioning mechanism and a first clamping mechanism are provided on the first lifting mechanism. The above-mentioned setting of the front cabin assembly on a first lifting mechanism includes: positioning the front cabin assembly on the corresponding first lifting mechanism through the first positioning mechanism; fastening the front cabin assembly to the corresponding first lifting mechanism through the first clamping mechanism, which can improve the positioning stability of the front cabin assembly on the first lifting platform; the above-mentioned setting of the rear floor assembly on another first lifting mechanism includes: positioning the rear floor assembly on the corresponding first lifting mechanism through the first positioning mechanism; fastening the rear floor assembly to the corresponding first lifting mechanism through the first clamping mechanism, which can improve the positioning stability of the front cabin assembly on the first lifting platform.

[0024] In some embodiments, the assembly equipment further comprises a second lifting mechanism, the midsection assembly being disposed on the second lifting mechanism, and the assembly method further comprises: raising the assembled midsection assembly to a third predetermined height on the base plate, thereby raising the assembled midsection assembly, the front cabin assembly, and the rear floor assembly to the third predetermined height. The second lifting mechanism is used to eject the lower component of the assembled vehicle chassis.

[0025] In some embodiments, before the assembled midsection assembly is raised to a third preset height on the base plate, thereby raising the assembled midsection assembly, front cabin assembly, and rear floor assembly to the third preset height, the assembly method further comprises: fixing the assembled front cabin assembly to the midsection assembly, and fixing the assembled rear floor assembly to the midsection assembly. Before the vehicle chassis is ejected, the front cabin assembly is further fixedly connected to the midsection assembly, and the rear floor assembly is further fixedly connected to the midsection assembly to achieve an integrated connection of the vehicle chassis and improve its structural stability. This is then followed by ejection, which can improve ejection reliability and enable the ejected vehicle chassis to be used and delivered as a standalone product.

[0026] In a third aspect, the present application provides a vehicle chassis comprising a midsection assembly, a front cabin assembly, and a rear floor assembly, wherein the vehicle chassis is assembled using the aforementioned assembly equipment and the aforementioned assembly method.

[0027] In some embodiments, the midsection assembly includes an energy storage assembly.

[0028] In a fourth aspect, the present application provides a vehicle, which includes the above-mentioned vehicle chassis.

[0029] Different from the prior art: The vehicle chassis provided in the embodiment of the present application includes a mid-section assembly, a front cabin assembly, and a rear floor assembly; the assembly equipment includes: a base plate; a lifting device, which is arranged on the base plate and movably connected to the base plate along the vertical direction of the base plate, the lifting device is configured to carry and position the front cabin assembly and the rear floor assembly, and / or carry and position the mid-section assembly, and the lifting device moves in the vertical direction relative to the base plate to achieve the assembly connection between the front cabin assembly and the rear floor assembly and the mid-section assembly. The embodiment of the present application realizes the relative movement of the front cabin assembly and the rear floor assembly and the mid-section assembly along the vertical direction of the base plate through the lifting device, and can realize the assembly connection between the front cabin assembly and the rear floor assembly and the mid-section assembly through the relative movement between the front cabin assembly and the rear floor assembly and the mid-section assembly, which can reduce the difficulty of assembly and improve the assembly accuracy, and can improve the dimensional accuracy and consistency of the product after the vehicle chassis is assembled.

Brief Description of the Drawings

[0030] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0031] FIG1 is a schematic structural diagram of a vehicle according to one or more embodiments;

[0032] FIG2 is a schematic structural diagram of a vehicle chassis according to one or more embodiments;

[0033] FIG3 is a schematic structural diagram of an assembly device for a vehicle chassis according to one or more embodiments;

[0034] FIG4 is a schematic side view of the embodiment of FIG3 ;

[0035] FIG5 is a schematic top view of the embodiment of FIG3 ;

[0036] FIG6 is a schematic structural diagram of an assembly device for a vehicle chassis and a combined structure of the vehicle chassis according to one or more embodiments;

[0037] FIG7 is a schematic side view of the embodiment of FIG6 ;

[0038] FIG8 is a structural diagram of an embodiment of a method for assembling a vehicle chassis of the present application;

[0039] FIG9 is a structural diagram of another embodiment of the assembly method of the vehicle chassis of the present application.

[0040] The reference numerals in the specific embodiment are as follows: vehicle 1000a; battery 100a; controller 200a; motor 300a; upper vehicle body 1; vehicle chassis 2; middle section assembly 22; front cabin assembly 21; rear floor assembly 23; base plate 31; first load-bearing portion 311; second load-bearing portion 312; third load-bearing portion 313; front lifting mechanism 32; rear lifting mechanism 34; vertical direction Z; first direction X; first front driving mechanism 321; first rear driving mechanism 341; front lifting platform 322; rear lifting platform 342; front guide assembly 323; rear guide assembly 343; front clamping mechanism 325; rear clamping mechanism 345; first front clamping assembly 3251; first rear The front clamping assembly 3451; the second front clamping assembly 3252; the second rear clamping assembly 3452; the front positioning mechanism 326; the rear positioning mechanism 346; the second front driving mechanism 3261; the second rear driving mechanism 3461; the front positioning pin 3262; the rear positioning pin 3462; the second lifting mechanism 33; the third driving mechanism 331; the second lifting platform 332; the second clamping mechanism 335; the front limiting column 327; the rear limiting column 347; the middle limiting column 357; the second positioning mechanism 336. [Specific implementation method]

[0041] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0043] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly indicate the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is two or more, unless otherwise specifically defined.

[0044] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0045] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0046] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0047] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0048] A vehicle usually consists of four major parts: the engine, the upper body, the vehicle chassis and the electrical equipment. Among them, the engine is the power unit of the vehicle. The function of the vehicle chassis is to support and install the assembly of the engine and other components to form the vehicle shape of the car, and to receive the power of the engine to make the vehicle move and ensure normal driving. The vehicle chassis consists of four parts: the transmission system, the running system, the steering system and the braking system. The electrical equipment consists of two major parts: the power supply and the electrical equipment. The vehicle body is installed on the vehicle chassis for the driver and passengers to ride or load cargo.

[0049] As an indispensable independent product of a vehicle, the consistency and dimensional accuracy of the vehicle chassis have a great impact on the overall performance of the vehicle.

[0050] To improve production line efficiency and workshop space utilization, multiple components can be assembled to form a vehicle chassis. In related technologies, assembly typically requires simultaneous insertion and alignment of components and insertion of locating pins, making assembly difficult. When there is an interference fit between the overlapping surfaces of the components, locating pins may not be inserted or may be offset, resulting in poor dimensional accuracy and consistency in the assembled product.

[0051] Based on the above considerations, the present application proposes an assembly device and a method for assembling a vehicle chassis that can improve the dimensional accuracy and consistency of the product after the vehicle chassis is assembled. Specifically, the vehicle chassis provided in the embodiment of the present application includes a mid-section assembly, a front cabin assembly, and a rear floor assembly; the assembly device includes: a base plate; a lifting device disposed on the base plate and movably connected to the base plate along a vertical direction of the base plate, the lifting device being configured to carry and position the front cabin assembly and the rear floor assembly, and / or carry and position the mid-section assembly, and the lifting device moving vertically relative to the base plate to achieve an assembly connection between the front cabin assembly and the rear floor assembly and the mid-section assembly. The embodiment of the present application uses the lifting device to achieve relative movement of the front cabin assembly and the rear floor assembly and the mid-section assembly along the vertical direction of the base plate, and can achieve an assembly connection between the front cabin assembly and the rear floor assembly and the mid-section assembly through the relative movement between the front cabin assembly and the rear floor assembly and the mid-section assembly, thereby reducing the assembly difficulty and improving the assembly accuracy, and can improve the dimensional accuracy and consistency of the product after the vehicle chassis is assembled.

[0052] The vehicle chassis assembly equipment and vehicle chassis assembly method disclosed in the embodiments of the present application can be used for vehicle chassis. The vehicle chassis can be used for fuel vehicles, gas vehicles, or new energy vehicles. The new energy vehicles can be pure electric vehicles, hybrid vehicles, or extended-range vehicles.

[0053] In some embodiments, as shown in FIG1 , a vehicle 1000a includes an upper body 1, a vehicle chassis 2, a controller 200a, and a motor 300a. A battery 100a is also disposed on the vehicle chassis 2. The battery 100a can be used to power the vehicle 1000a. For example, the battery 100a can serve as an operating power source for the vehicle 1000a. The controller 200a controls the battery 100a to power the motor 300a, for example, to meet the power requirements of the vehicle 1000a during startup, navigation, and driving.

[0054] In some embodiments, as shown in FIG2 , the vehicle chassis 2 includes a midsection assembly 22, a front cabin assembly 21, and a rear floor assembly 23, wherein the front cabin assembly 21 and the rear floor assembly 23 are respectively connected to the midsection assembly 22. The connection method may be splicing, plug-in, overlap, mortise and tenon, etc.

[0055] Taking the plug-in connection as an example, a first plug-in connection is provided at one end of the middle section assembly 22 near the front cabin assembly 21, and a second plug-in connection is provided at one end of the front cabin assembly 21 near the middle section assembly 22. The first and second plug-in connections cooperate to achieve plug-in connection between the middle section assembly 22 and the front cabin assembly 21. A third plug-in connection is provided at one end of the middle section assembly 22 near the rear floor assembly 23, and a fourth plug-in connection is provided at one end of the rear floor assembly 23 near the middle section assembly 22. The third and fourth plug-in connections cooperate to achieve plug-in connection between the middle section assembly 22 and the rear floor assembly 23.

[0056] The first plug-in portion and the second plug-in portion can be plug-connected in a vertical or longitudinal plug-in manner; the third plug-in portion and the fourth plug-in portion can be plug-connected in a vertical or longitudinal plug-in manner.

[0057] Furthermore, a first fixing portion is provided at one end of the middle section assembly 22 close to the front cabin assembly 21, a second fixing portion is provided at one end of the front cabin assembly 21 close to the middle section assembly 22, a third fixing portion is provided at one end of the middle section assembly 22 close to the rear floor assembly 23, and a fourth fixing portion is provided at one end of the rear floor assembly 23 close to the middle section assembly 22. After the front cabin assembly 21 and the rear floor assembly 23 are respectively assembled with the middle section assembly 22, the first fixing portion is fastened to the second fixing portion by bolts, etc., and the third fixing portion is fixed to the fourth fixing portion, thereby completing the final assembly of the vehicle chassis 2.

[0058] The connection method between the fixing parts is not limited to welding, adhesive connection, bolt connection, etc.

[0059] The front engine compartment assembly 21 is the skeletal component of the vehicle chassis 2 near the front of the vehicle, the rear floor assembly 23 is the skeletal component of the vehicle chassis 2 near the rear of the vehicle, and the midsection assembly 22 is the middle skeletal component located between and connecting the front engine compartment assembly 21 and the rear floor assembly 23. The midsection assembly 22 can also integrate the vehicle's energy components, such as the battery 100a. The midsection assembly 22 includes an energy storage assembly.

[0060] The integrated chassis technology of electric vehicles, namely CTC (Cell to Chassis), is a battery technology that directly integrates the battery 100a into the vehicle chassis 2. It can reduce the footprint of the vehicle 1000a and the vehicle chassis 2 and reduce manufacturing costs, and can also increase the volume energy density of the battery 100a and load more batteries 100a.

[0061] Of course, the vehicle chassis provided in this application can be a CTC vehicle chassis or other vehicle chassis.

[0062] In some embodiments, as shown in Figures 3 to 7, the assembly equipment of the vehicle chassis 2 includes: a base plate 31 and a lifting device, the lifting device is arranged on the base plate 31 and is movably connected to the base plate 31 along the vertical direction Z of the base plate 31, the lifting device is configured to carry and position the front cabin assembly 21 and the rear floor assembly 23, and / or carry and position the middle section assembly 22, and the lifting device moves relative to the base plate 31 along the vertical direction Z to realize the assembly connection between the front cabin assembly 21 and the rear floor assembly 23 and the middle section assembly 22.

[0063] In this embodiment, a lifting device is used to realize the relative movement of the front cabin assembly 21 and the rear floor assembly 23 and the middle section assembly 22 along the vertical direction Z of the base plate 31. The assembly connection between the front cabin assembly 21 and the rear floor assembly 23 and the middle section assembly 22 can be realized through the relative movement between the front cabin assembly 21 and the rear floor assembly 23 and the middle section assembly 22, which can reduce the assembly difficulty and improve the assembly accuracy, and can improve the dimensional accuracy and consistency of the product after the vehicle chassis 2 is assembled.

[0064] In some embodiments, the lifting device includes two first lifting mechanisms. The base plate 31 is provided with a first load-bearing portion 311, a second load-bearing portion 312 and a third load-bearing portion 313. The second load-bearing portion 312 is located between the first load-bearing portion 311 and the third load-bearing portion 313, and the second load-bearing portion 312 is configured to carry and position the middle section assembly 22; the two first lifting mechanisms are respectively provided on the first load-bearing portion 311 and the third load-bearing portion 313, and are movably connected to the base plate 31 along the vertical direction Z of the base plate 31. One first lifting mechanism is configured to carry and position the front cabin assembly 21, and the other first lifting mechanism is configured to carry and position the rear floor assembly 23; wherein, one first lifting mechanism drives the front cabin assembly 21 to move relative to the base plate 31 along the vertical direction Z to realize the assembly connection between the front cabin assembly 21 and the middle section assembly 22, and the other first lifting mechanism drives the rear floor assembly 23 to move relative to the base plate 31 along the vertical direction Z to realize the assembly connection between the rear floor assembly 23 and the middle section assembly 22.

[0065] Among them, the two first lifting mechanisms include a front lifting mechanism 32 and a rear lifting mechanism 34. The front lifting mechanism 32 is arranged on the first carrying part 311 for carrying and positioning the front cabin assembly 21; the rear lifting mechanism 34 is arranged on the third carrying part 313 for carrying and positioning the rear floor assembly 23.

[0066] The front cabin assembly 21, the midsection assembly 22, and the rear floor assembly 23 of the vehicle chassis 2 are sequentially assembled and connected along a first direction X. The first supporting portion 311, the second supporting portion 312, and the third supporting portion 313 on the base plate 31 are sequentially arranged along the first direction X, so that the first supporting portion 311, the second supporting portion 312, and the third supporting portion 313 are respectively provided in a one-to-one correspondence with the front cabin assembly 21, the midsection assembly 22, and the rear floor assembly 23, thereby improving the assembly accuracy of the vehicle chassis 2. The first direction X is perpendicular to the vertical direction Z.

[0067] Taking the plug-in method as an example, in one application scenario, the front lifting mechanism 32 used to carry and position the front cabin assembly 21 is raised to a first preset height, and the front cabin assembly 21 is positioned on the front lifting mechanism 32 at the first preset height, and the rear lifting mechanism 34 used to carry and position the rear floor assembly 23 is raised to a second preset height, and the rear floor assembly 23 is positioned on the rear lifting mechanism 34 at the second preset height. Next, the front lifting mechanism 32 carrying the front cabin assembly 21 is controlled to move relative to the base plate 31 along the vertical direction Z, for example, to move downward, until the second plug-in portion of the front cabin assembly 21 located on the front lifting mechanism 32 and the first plug-in portion of the middle section assembly 22 located on the base plate 31 are plugged into place, completing the plug-in assembly between the two; the rear lifting mechanism 34 carrying the rear floor assembly 23 is controlled to move relative to the base plate 31 along the vertical direction Z, for example, to move downward, until the fourth plug-in portion of the rear floor assembly 23 located on the rear lifting mechanism 34 and the third plug-in portion of the middle section assembly 22 located on the base plate 31 are plugged into place, completing the plug-in assembly between the two.

[0068] The first preset height corresponding to the front lifting mechanism 32 and the second preset height corresponding to the rear lifting mechanism 34 may be the same or different.

[0069] In this embodiment, the middle section assembly 22 and the two first lifting mechanisms for supporting the front cabin assembly 21 and the rear floor assembly 23 are supported by the same base plate 31, so that the middle section assembly 22, the front cabin assembly 21 and the rear floor assembly 23 can be assembled based on the same carrier, that is, the base plate 31. Therefore, the relative stability of the middle section assembly 22, the front cabin assembly 21 and the rear floor assembly 23 during assembly can be improved, thereby improving the dimensional accuracy and consistency of the assembled product of the vehicle chassis 2. Furthermore, in this embodiment, the front cabin assembly 21 is supported and positioned by a first lifting mechanism, and the front cabin assembly 21 is moved relative to the middle section assembly 22 along the vertical direction Z of the base plate 31. The assembly connection between the two can be achieved through the relative movement between the two. Therefore, in this embodiment, a first lifting mechanism is used to first position the front cabin assembly 21 at a high position, and then the front cabin assembly 21 and the middle section assembly 22 are assembled and connected by lifting motion, thereby reducing assembly difficulty and improving assembly precision. In this embodiment, another first lifting mechanism is used to position the rear floor assembly 23 and enable relative movement of the rear floor assembly 23 and the middle section assembly 22 along the vertical direction Z of the base plate 31, thereby achieving assembly connection between the two. Therefore, in this embodiment, another first lifting mechanism is used to first position the rear floor assembly 23 at a high position, and then the rear floor assembly 23 and the middle section assembly 22 are assembled and connected by lifting motion, thereby reducing assembly difficulty and improving assembly precision. Therefore, this embodiment can improve the dimensional accuracy and consistency of the assembled vehicle chassis 2.

[0070] In some embodiments, the first lifting mechanism includes a first driving mechanism and a first lifting platform, wherein the first driving mechanism is arranged on the base plate 31; the first lifting platform is connected to the first driving mechanism, and the first driving mechanism drives the first lifting platform to move along the vertical direction Z relative to the base plate 31, and the first lifting platform is configured to carry the front cabin assembly 21.

[0071] The first driving mechanism of the front lifting mechanism 32 includes a first front driving mechanism 321, and the first lifting platform of the front lifting mechanism 32 includes a front lifting platform 322. The first front driving mechanism 321 is disposed on the base plate 31, and the front lifting platform 322 is connected to the first front driving mechanism 321. The first front driving mechanism 321 drives the front lifting platform 322 to move in the vertical direction Z relative to the base plate 31. The front lifting platform 322 is configured to carry the front cabin assembly 21. The first driving mechanism of the rear lifting mechanism 34 includes a first rear driving mechanism 341. The first lifting platform of the rear lifting mechanism 34 includes a rear lifting platform 342. The first rear driving mechanism 341 is disposed on the base plate 31, and the rear lifting platform 342 is connected to the first rear driving mechanism 341. The first rear driving mechanism 341 drives the rear lifting platform 342 to move in the vertical direction Z relative to the base plate 31. The rear lifting platform 342 is configured to carry the rear floor assembly 23.

[0072] Among them, the first front driving mechanism 321 for supporting the front lifting mechanism 32 of the front cabin assembly 21 is set on the first supporting part 311 of the base plate 31; the first rear driving mechanism 341 for supporting the rear lifting mechanism 34 of the rear floor assembly 23 is set on the third supporting part 313 of the base plate 31.

[0073] The driving mechanism mentioned above refers to a component or part that provides driving force, such as a cylinder, an electric cylinder, a motor, etc.

[0074] This embodiment utilizes a first driving mechanism and a first lifting platform to realize a first lifting mechanism. On the one hand, the structure is simple, easy to realize, and easy to control; on the other hand, the first lifting platform can increase the bearing area of ​​the front cabin assembly 21 and improve the stability of the front cabin assembly 213 during the lifting process. The first lifting platform can increase the bearing area of ​​the rear floor assembly 23 and improve the stability of the rear floor assembly 23 during the lifting process, thereby improving the assembly accuracy of the vehicle chassis 2; on the other hand, it is convenient to set components such as positioning and fastening mechanisms on the above-mentioned lifting platform to increase the positioning stability and positioning accuracy of the front cabin assembly 21 or the rear floor assembly 23.

[0075] Of course, in other embodiments, a positioning sling or the like may be used to implement the first lifting mechanism.

[0076] In some embodiments, the first lifting mechanism further includes: a guide assembly, which is disposed on the base plate 31 and movably connected to the first lifting platform. The first lifting platform moves along the vertical direction Z relative to the base plate 31 under the limiting action of the guide assembly.

[0077] Among them, the guide component of the front lifting mechanism 32 includes a front guide component 323, the front guide component 323 is set on the base plate 31, and is movably connected to the front lifting platform 322. The front lifting platform 322 moves along the vertical direction Z relative to the base plate 31 under the limiting action of the front guide component 323; the guide component of the rear lifting mechanism 34 includes a rear guide component 343, the rear guide component 343 is set on the base plate 31, and is movably connected to the rear lifting platform 342. The rear lifting platform 342 moves along the vertical direction Z relative to the base plate 31 under the limiting action of the rear guide component 343.

[0078] Among them, the front guide assembly 323 of the front lifting mechanism 32 for supporting the front cabin assembly 21 is arranged on the first supporting portion 311 of the base plate 31; the rear guide assembly 343 of the rear lifting mechanism 34 for supporting the rear floor assembly 23 is arranged on the third supporting portion 313 of the base plate 31.

[0079] The front guide assembly 323 refers to a position-limiting assembly or component that enables the front lifting platform 322 to move in the vertical direction Z. The rear guide assembly 343 refers to a position-limiting assembly or component that enables the rear lifting platform 342 to move in the vertical direction Z.

[0080] In this embodiment, a guide assembly 323 is provided on the base plate 31 for limiting the movement of the first lifting platform in the vertical direction Z, which can improve the lifting accuracy of the first lifting platform 322, thereby improving the assembly accuracy and consistency of the vehicle chassis 2 after assembly.

[0081] In some embodiments, a guide column is provided on one side of the first lifting platform close to the base plate 31 , and the guide assembly includes a linear bearing, the base of the linear bearing is fixedly disposed on the base plate 31 , and the guide column is at least partially disposed in the linear bearing.

[0082] Among them, a guide column is provided on the side of the front lifting platform 322 close to the base plate 31, and the front guide assembly 323 includes a linear bearing. The base of the linear bearing is fixedly set on the base plate 31, and the guide column is at least partially set in the linear bearing.

[0083] A guide column is provided on one side of the rear lifting platform 342 close to the base plate 31 . The rear guide assembly 343 includes a linear bearing. The base of the linear bearing is fixedly disposed on the base plate 31 , and the guide column is at least partially disposed in the linear bearing.

[0084] The base of the linear bearing is set on the base plate 31, which can improve its stability; a guide column is set on the side of the first lifting platform close to the base plate 31, which can reduce the influence of the guide column on other components and improve the smoothness of the lifting of the first lifting platform; further, because the lifting accuracy of the linear bearing is relatively high, the offset in the plane parallel to the base plate 31 during its lifting process is very small, thereby improving the accuracy of the lifting movement of the first lifting platform, thereby improving the assembly accuracy and consistency of the vehicle chassis 2 after assembly.

[0085] In other embodiments, a guide assembly may be selectively provided for the first lifting mechanism for carrying the front cabin assembly or the second lifting mechanism for carrying the rear floor assembly.

[0086] Of course, in other embodiments, a guide rail extending upward along the vertical direction Z can be set in the side area of ​​the substrate, and a guide block can be set on the side of the first lifting platform to achieve guidance of the first lifting platform through the cooperation of the guide block and the guide rail, and so on.

[0087] In some embodiments, the guide assembly includes multiple linear bearings, and a plurality of evenly arranged guide posts are provided on the peripheral area of ​​one side of the first lifting platform close to the base plate 31 , and the multiple linear bearings are provided in one-to-one correspondence with the multiple guide posts.

[0088] The front guide assembly 323 includes multiple linear bearings. A plurality of evenly spaced guide posts are provided on the outer periphery of the front lift platform 322 near the base plate 31. The linear bearings correspond to the guide posts in a one-to-one relationship. The rear guide assembly 343 includes multiple linear bearings. A plurality of evenly spaced guide posts are provided on the outer periphery of the rear lift platform 342 near the base plate 31. The linear bearings correspond to the guide posts in a one-to-one relationship.

[0089] The one-to-one arrangement of the plurality of linear bearings and the plurality of guide posts means that each guide post is arranged correspondingly to a linear bearing, and each guide post corresponds to a different linear bearing.

[0090] This embodiment can improve the stability of the first lifting platform's lifting and lowering by using multiple guide columns and corresponding linear bearings evenly arranged in the outer peripheral area of ​​the first lifting platform close to the substrate 31, and can reduce the impact of the linear bearings and guide columns on other components.

[0091] In some embodiments, the first lifting mechanism further includes: a first clamping mechanism disposed on a side of the first lifting platform facing away from the base plate 31 , the first clamping mechanism being configured to fasten the front cabin assembly 21 on the first lifting platform.

[0092] The first clamping mechanism of the front lifting mechanism 32 includes a front clamping mechanism 325, and the first clamping mechanism of the rear lifting mechanism 34 includes a rear clamping mechanism 345. The front clamping mechanism 325 is disposed on the side of the front lifting platform 322 facing away from the base plate 31. The front clamping mechanism 325 is configured to secure the front cabin assembly 21 located on the front lifting platform 322 to the front lifting platform 322. The rear lifting mechanism 34 is disposed on the side of the rear lifting platform 342 facing away from the base plate 31. The rear clamping mechanism 345 is configured to secure the rear floor assembly 23 located on the rear lifting platform 342 to the rear lifting platform 342.

[0093] Among them, the front clamping mechanism 325 of the front lifting mechanism 32 for carrying and positioning the front cabin assembly 21 fastens the front cabin assembly 21 on the front lifting platform 322; the rear clamping mechanism 345 of the rear lifting mechanism 34 for carrying and positioning the rear floor assembly 23 fastens the rear floor assembly 23 on the rear lifting platform 342.

[0094] In this embodiment, the front cabin assembly 21 is fastened to the first lifting platform by a first clamping mechanism provided on the first lifting platform, and the rear floor assembly 23 is fastened to the first lifting platform by a first clamping mechanism provided on the first lifting platform. This can improve the stability of the front cabin assembly 21 and the rear floor assembly 23 during the lifting process, and improve their positioning accuracy, thereby improving the assembly accuracy and consistency of the front cabin assembly 21, the rear floor assembly 23 and the middle section assembly 22 after assembly.

[0095] In some embodiments, the first clamping mechanism includes: a first clamping component and a second clamping component, the first clamping component is arranged on the side of the first lifting platform away from the substrate 31, and the fastening direction of the first clamping component is the same as the vertical direction Z; the second clamping component is arranged on the side of the first lifting platform away from the substrate 31, and the fastening direction of the second clamping component is perpendicular to the vertical direction Z.

[0096] Among them, the first clamping component of the front clamping mechanism 325 includes a first front clamping component 3251, and the second clamping component of the front clamping mechanism 325 includes a second front clamping component 3252, wherein the first front clamping component 3251 is arranged on the side of the front lifting platform 322 away from the substrate 31, and the fastening direction of the first front clamping component 3251 is the same as the vertical direction Z; the second front clamping component 3252 is arranged on the side of the front lifting platform 322 away from the substrate 31, and the fastening direction of the second front clamping component 3252 is perpendicular to the vertical direction Z. The first clamping component of the rear clamping mechanism 345 includes a first rear clamping component 3451, and the second clamping component of the rear clamping mechanism 345 includes a second rear clamping component 3452, wherein the first rear clamping component 3451 is arranged on the side of the rear lifting platform 342 away from the substrate 31, and the fastening direction of the first rear clamping component 3451 is the same as the vertical direction Z; the second rear clamping component 3452 is arranged on the side of the rear lifting platform 342 away from the substrate 31, and the fastening direction of the second rear clamping component 3452 is perpendicular to the vertical direction Z.

[0097] In this embodiment, the front cabin assembly 21 (rear floor assembly 23) is fastened on the first lifting platform along the vertical direction Z and the direction perpendicular to the vertical direction Z, that is, the parallel direction of the base plate 31, through the first clamping assembly and the second clamping assembly, so as to reduce the deviation of the front cabin assembly 21 (rear floor assembly 23) along the vertical direction Z and the direction perpendicular to the vertical direction Z, that is, the parallel direction of the base plate 31. Therefore, the stability of the front cabin assembly 21 and the rear floor assembly 23 during the lifting process can be improved, and their positioning accuracy can be improved, thereby improving the assembly accuracy and consistency of the front cabin assembly 21, the rear floor assembly 23 and the middle section assembly 22 after assembly.

[0098] In other embodiments, the first clamping assembly and the second clamping assembly may be replaced by a position-limiting component having a vertical direction and a parallel direction to the base plate.

[0099] In some embodiments, the first lifting mechanism further includes: a first positioning mechanism, disposed on the base plate 31 and configured to limit the position of the front cabin assembly or the rear floor assembly on the plane where the first lifting platform is located.

[0100] The first positioning mechanism of the front lifting mechanism 32 includes a front positioning mechanism 326 disposed on the base plate 31 and configured to define the position of the front cabin assembly 21 on the plane where the front lifting platform 322 is located. The first positioning mechanism of the rear lifting mechanism 34 includes a rear positioning mechanism 346 disposed on the base plate 31 and configured to define the position of the rear floor assembly 23 on the plane where the rear lifting platform 342 is located.

[0101] The plane where the front lifting platform 322 is located is perpendicular to the vertical direction Z of the substrate 31 , that is, it is a parallel plane to the substrate 31 .

[0102] The front positioning mechanism 326 of the front lifting mechanism 32 for carrying and positioning the front cabin assembly 21 is arranged on the first carrying portion 311 ; the rear positioning mechanism 346 of the rear lifting mechanism 34 for carrying and positioning the rear floor assembly 23 is arranged on the third carrying portion 313 .

[0103] This embodiment utilizes a first positioning mechanism to define the position of the front cabin assembly 21 on the plane of the first lifting platform, and also utilizes a first positioning mechanism to define the position of the rear floor assembly 23 on the plane of the first lifting platform. This improves the stability of the front cabin assembly 21 and the rear floor assembly 23 during the lifting process, and enhances their positioning accuracy, thereby enhancing the assembly accuracy and post-assembly consistency of the front cabin assembly 21, the rear floor assembly 23, and the center section assembly 22. Furthermore, positioning the first positioning mechanism on the base plate 31 reduces the problem of positioning deviation of the front cabin assembly 21 and the rear floor assembly 23 caused by offset between the first positioning mechanism and the base plate 31.

[0104] In other embodiments, the first positioning mechanism may also be arranged on the first lifting platform.

[0105] In some embodiments, the first positioning mechanism includes: a second driving mechanism and a positioning pin, the second driving mechanism is disposed on the substrate, the positioning pin is connected to the second driving mechanism, and is extended and retracted along the vertical direction Z under the drive of the second driving mechanism.

[0106] The second driving mechanism of the front positioning mechanism 326 includes a second front driving mechanism 3261, and the positioning pin of the front positioning mechanism 326 includes a front positioning pin 3262. The second front driving mechanism 3261 is disposed on the base plate 31. The front positioning pin 3262 is connected to the second front driving mechanism 3261 and is driven by the second front driving mechanism 3261 to extend and retract along the vertical direction Z. The second driving mechanism of the rear positioning mechanism 346 includes a second rear driving mechanism 3461, and the positioning pin of the rear positioning mechanism 346 includes a rear positioning pin 3462. The second rear driving mechanism 3461 is disposed on the base plate 31. The rear positioning pin 3462 is connected to the second rear driving mechanism 3461 and is driven by the second rear driving mechanism 3461 to extend and retract along the vertical direction Z.

[0107] The driving mechanism mentioned above refers to a component or part that provides driving force, such as a cylinder, an electric cylinder, a motor, etc.

[0108] This embodiment utilizes a retractable positioning pin in the vertical direction Z to implement the first positioning mechanism. This allows the first lifting mechanism to position the front cabin assembly 21 and rear floor assembly 23 at a predetermined height, coordinated with the height of the first lifting platform. After assembly of the vehicle chassis 2 is complete, the positioning pin can be retracted to minimize interference with the lower components of the vehicle chassis 2.

[0109] In some embodiments, the assembly equipment also includes: a second lifting mechanism 33, which is arranged on the second bearing portion 312, and the second lifting mechanism 33 is configured to carry and position the middle section assembly 22, and is configured to drive the middle section assembly 22 to move along the vertical direction Z toward the side away from the base plate 31 after the middle section assembly 22, the front cabin assembly 21, and the rear floor assembly 23 are assembled.

[0110] The second lifting mechanism 33 serves as an assembly lifting mechanism for the vehicle chassis 2. After the middle section assembly 22, the front cabin assembly 21, and the rear floor assembly 23 are assembled, the assembled vehicle chassis 2 is ejected through the second lifting mechanism 33 to realize the lowering of the vehicle chassis 2.

[0111] In some embodiments, the second lifting mechanism 33 includes a third driving mechanism 331 and a second lifting platform 332, wherein the third driving mechanism 331 is arranged on the substrate 31; the second lifting platform 332 is connected to the third driving mechanism 331, and the third driving mechanism 331 drives the second lifting platform 332 to move along the vertical direction Z relative to the substrate 31, and the second lifting platform 332 is configured to support the middle section assembly 22.

[0112] The third driving mechanism 331 is disposed on the second supporting portion 312 of the base plate 31. The third driving mechanism 331 refers to a component or part that provides driving force, such as a cylinder, an electric cylinder, a motor, etc.

[0113] This embodiment utilizes the third driving mechanism 331 and the second lifting platform 332 to realize the second lifting mechanism 33. On the one hand, the structure is simple, easy to implement, and easy to control; on the other hand, the second lifting platform 332 can increase the bearing area of ​​the center section assembly 22 and improve the stability of the center section assembly 22 during the lifting process, thereby improving the assembly accuracy of the vehicle chassis 2; on the other hand, it is convenient to set components such as positioning and fastening mechanisms on the second lifting platform 332 to increase the positioning stability and positioning accuracy of the center section assembly 22.

[0114] Of course, in other embodiments, a positioning sling or the like may be used to implement the second lifting mechanism.

[0115] In other embodiments, the second lifting mechanism may further include: a guide assembly, which is arranged on the substrate and movably connected to the second lifting platform. The second lifting platform moves relative to the substrate in a vertical direction of the substrate under the limiting action of the guide assembly, so as to improve the lifting accuracy of the second lifting platform.

[0116] In some embodiments, the second lifting mechanism 33 further includes a second clamping mechanism 335 disposed on the second carrying portion 312 . The second clamping mechanism 335 is configured to fasten the middle section assembly 22 on the second lifting platform 332 to the second lifting platform 332 .

[0117] In this embodiment, the middle section assembly 22 is fastened to the second lifting platform 332 by a second clamping mechanism 335 provided on the second bearing portion 312, which can improve the stability of the middle section assembly 22 during the lifting process and improve its positioning accuracy, thereby improving the assembly accuracy and consistency of the front cabin assembly 21, the rear floor assembly 23 and the middle section assembly 22 after assembly.

[0118] In some embodiments, the second clamping mechanism may include multiple clamping components, the fastening direction of some clamping components is the same as the vertical direction Z, and the fastening direction of some clamping components is perpendicular to the vertical direction Z, so as to reduce the offset of the middle section assembly 22 along the vertical direction Z and its vertical direction, that is, the parallel direction of the base plate 31, thereby improving the stability of the middle section assembly 22 during the assembly process and improving its positioning accuracy, thereby improving the assembly accuracy and consistency of the front cabin assembly 21, the rear floor assembly 23 and the middle section assembly 22 after assembly.

[0119] In other embodiments, the second clamping mechanism may be implemented by having a limiting component in a vertical direction and a parallel direction to the substrate.

[0120] In some embodiments, the second lifting mechanism 33 further includes: a second positioning mechanism 336 , which is disposed on the base plate 31 , and the second positioning mechanism is configured to limit the position of the middle section assembly 22 on the plane where the second lifting platform 332 is located.

[0121] This embodiment utilizes a second positioning mechanism to define the position of the midsection assembly 22 on the plane of the second lifting platform 332, enhancing the stability and positioning accuracy of the midsection assembly 22 during the lifting process. This improves the assembly accuracy and post-assembly consistency of the front cabin assembly 21, rear floor assembly 23, and midsection assembly 22. Furthermore, positioning the second positioning mechanism on the base plate 31 mitigates positioning deviations of the midsection assembly 22 caused by offset between the second lifting mechanism 33 and the base plate 31.

[0122] In other embodiments, the second positioning mechanism may also be arranged on the second lifting platform.

[0123] In some embodiments, the second positioning mechanism includes: a fourth driving mechanism and a positioning pin; wherein the fourth driving mechanism is disposed on the substrate 31; the positioning pin is connected to the fourth driving mechanism and is driven by the fourth driving mechanism to extend and retract along the vertical direction Z.

[0124] The fourth driving mechanism refers to a component or part that provides driving force, such as a cylinder, an electric cylinder, a motor, etc.

[0125] This embodiment utilizes a positioning pin that can be extended and retracted along the vertical direction Z to realize the second positioning mechanism. After the vehicle chassis 2 is assembled, the positioning pin can be retracted to reduce interference with the lower parts of the vehicle chassis 2.

[0126] The second lifting mechanism 33 serves as the assembly lifting mechanism of the vehicle chassis 2. After the middle section assembly 22, the front cabin assembly 21, and the rear floor assembly 23 are assembled, the clamping mechanism is released, the positioning pin is lowered, and the assembled vehicle chassis 2 assembly is ejected through the second lifting mechanism 33 to complete the assembly of the lower parts.

[0127] In some embodiments, as shown in Figures 3 to 7, the assembly equipment of the vehicle chassis 2 includes: a base plate 31, a front lifting mechanism 32, a rear lifting mechanism 34, and a second lifting mechanism 33, wherein the base plate 31 is provided with a first load-bearing portion 311, a second load-bearing portion 312 and a third load-bearing portion 313, and the second load-bearing portion 312 is located between the first load-bearing portion 311 and the third load-bearing portion 313; the second lifting mechanism 33 is provided on the second load-bearing portion 312, and is movably connected to the base plate 31 along the vertical direction Z of the base plate 31, and is configured to carry and position the middle section assembly 22; the front lifting mechanism 32 is provided on the first load-bearing portion 311, and the rear lifting mechanism 34 is provided on the third load-bearing portion 313, and the front lifting mechanism 32 and the rear lifting mechanism 34 are movably connected to the base plate 31 along the vertical direction Z of the base plate 31, the front lifting mechanism 32 is configured to carry and position the front cabin assembly 21, and the front lifting mechanism 32 is configured to carry and position the rear floor assembly 23.

[0128] Among them, the front lifting mechanism 32 for carrying and positioning the front cabin assembly 21 is composed of a first front driving mechanism 321, a front lifting platform 322, a front guide assembly 323, a front clamping mechanism 325, and a front positioning mechanism 326; the first front driving mechanism 321 is arranged on the first bearing part 311, and the front lifting platform 322 is connected to the first front driving mechanism 321, and the first front driving mechanism 321 drives the front lifting platform 322 to move along the vertical direction Z relative to the base plate 31, and the front lifting platform 322 is configured to carry the front cabin assembly 21; the front guide assembly 323 is arranged on the first bearing part 311 and is movably connected to the front lifting platform 322, and the front lifting platform 322 moves along the vertical direction Z relative to the base plate 31 under the limiting action of the front guide assembly 323. A guide column is provided on the side of the front lifting platform 322 close to the base plate 31, and the front guide assembly 323 includes a linear bearing, the base of the linear bearing is fixedly set on the base plate 31, and the guide column is at least partially set in the linear bearing; the front guide assembly 323 includes multiple linear bearings, and the outer peripheral area of ​​the side of the front lifting platform 322 close to the base plate 31 is provided with multiple evenly arranged guide columns, and the multiple linear bearings are arranged in a one-to-one correspondence with the multiple guide columns; the front clamping mechanism 325 is provided on the side of the front lifting platform 322 away from the base plate 31, and the front clamping mechanism 325 is configured to fasten the front cabin assembly 21 located on the front lifting platform 322 to the front lifting platform 322; the front positioning mechanism 326 is provided on the base plate 31, and the front positioning mechanism 326 is configured to limit the position of the front cabin assembly 21 on the plane where the front lifting platform 322 is located.

[0129] Specifically, a linear bearing is provided at each of the four corners of the front lifting platform 322 .

[0130] Specifically, the front clamping mechanism 325 includes a first front clamping component 3251 and a second front clamping component 3252, wherein the first front clamping component 3251 is arranged on the side of the front lifting platform 322 away from the substrate 31, and the first front clamping component 3251 is provided with a first clamping part at one end away from the front lifting platform 322, and the fastening direction of the first clamping part is the same as the vertical direction Z; the second front clamping component 3252 is arranged on the side of the front lifting platform 322 away from the substrate 31, and the second front clamping component 3252 is provided with a second clamping part at one end away from the front lifting platform 322, and the fastening direction of the second clamping part is perpendicular to the vertical direction Z.

[0131] Specifically, the front positioning mechanism 326 includes: a cylinder and a front positioning pin 3262; wherein, the cylinder is set on the base plate 31; the front positioning pin 3262 is connected to the cylinder and is extended and retracted along the vertical direction Z under the drive of the cylinder.

[0132] Among them, the front lifting mechanism 32 includes at least two first front clamping components 3251 and two second front clamping components 3252 arranged on the front lifting platform 322; the two first front clamping components 3251 are respectively arranged at the two corners of the side of the front lifting platform 322 away from the second load-bearing part 312; the two second front clamping components 3252 are respectively arranged at the two corners of the side of the front lifting platform 322 close to the second load-bearing part 312; two third clamping components 3253 with clamping directions parallel to the vertical direction Z are also provided on both sides of the area of ​​the first load-bearing part 311 close to the second load-bearing part 312.

[0133] Among them, four front limiting columns 327 are evenly arranged in the outer peripheral area of ​​the front lifting platform 322, which are used to abut against the inner walls of the cross beams and longitudinal beams of the front cabin assembly 21, so as to further limit the position of the front cabin assembly 21 on the plane where the front lifting platform 322 is located; and a guiding slope is provided at one end of the front limiting column 327 away from the front lifting platform 322, so that the front cabin assembly 21 can smoothly fall onto the front lifting platform 322 along the front limiting column 327.

[0134] The positions and quantities of the aforementioned mechanisms for positioning and fastening the front cabin assembly 21 may be designed based on the specific structure and size of the front cabin assembly 21 .

[0135] Among them, the rear lifting mechanism 34 for carrying and positioning the rear floor assembly 23 is composed of a first rear driving mechanism 341, a rear lifting platform 342, a rear guide assembly 343, a rear clamping mechanism 345, and a rear positioning mechanism 346; the first rear driving mechanism 341 is arranged on the third bearing portion 313, and the rear lifting platform 342 is connected to the first rear driving mechanism 341. The first rear driving mechanism 341 drives the rear lifting platform 342 to move along the vertical direction Z relative to the base plate 31, and the rear lifting platform 342 is configured to carry the rear floor assembly 23; the rear guide assembly 343 is arranged on the third bearing portion 313 and is movably connected to the rear lifting platform 342. The rear lifting platform 342 moves along the vertical direction Z relative to the base plate 31 under the limiting action of the rear guide assembly 343. A guide column is provided on the side of the rear lifting platform 342 close to the base plate 31, and the rear guide assembly 343 includes a linear bearing, the base of the linear bearing is fixedly set on the base plate 31, and the guide column is at least partially set in the linear bearing; the rear guide assembly 343 includes multiple linear bearings, and the outer peripheral area of ​​the side of the rear lifting platform 342 close to the base plate 31 is provided with multiple evenly arranged guide columns, and the multiple linear bearings are arranged in a one-to-one correspondence with the multiple guide columns; the rear clamping mechanism 345 is provided on the side of the rear lifting platform 342 away from the base plate 31, and the rear clamping mechanism 345 is configured to fasten the rear floor assembly 23 located on the rear lifting platform 342 to the rear lifting platform 342; the rear positioning mechanism 346 is provided on the base plate 31, and the rear positioning mechanism 346 is configured to limit the position of the rear floor assembly 23 on the plane where the rear lifting platform 342 is located.

[0136] Specifically, a linear bearing is provided at each of the four corners of the rear lifting platform 342 .

[0137] Specifically, the rear clamping mechanism 345 includes a first rear clamping component 3451 and a second rear clamping component 3452, wherein the first rear clamping component 3451 is arranged on the side of the rear lifting platform 342 away from the substrate 31, and the fastening direction of the first rear clamping component 3451 is the same as the vertical direction Z; the second rear clamping component 3452 is arranged on the side of the rear lifting platform 342 away from the substrate 31, and the fastening direction of the second rear clamping component 3452 is perpendicular to the vertical direction Z.

[0138] Specifically, the rear positioning mechanism 346 includes: a cylinder and a rear positioning pin 3462; wherein, the cylinder is set on the base plate 31; the rear positioning pin 3462 is connected to the cylinder and is extended and retracted along the vertical direction Z under the drive of the cylinder.

[0139] Among them, the rear lifting mechanism 34 includes at least five first rear clamping components 3451 and two second rear clamping components 3452 arranged on the rear lifting platform 342; the two first rear clamping components 3451 are respectively arranged at the two corners of the side of the rear lifting platform 342 away from the second load-bearing part 312, and the three first rear clamping components 3451 are respectively arranged at the side of the rear lifting platform 342 close to the second load-bearing part 312; the two second rear clamping components 3452 are respectively arranged at the two corners of the side of the rear lifting platform 342 close to the second load-bearing part 312; two third clamping components 3453 with clamping directions parallel to the vertical direction Z are also provided on both sides of the area of ​​the third load-bearing part 313 close to the second load-bearing part 312.

[0140] Among them, four rear limiting columns 347 are evenly arranged in the outer peripheral area of ​​the rear lifting platform 342, which are used to abut against the inner walls of the crossbeam and longitudinal beam of the rear floor assembly 23, so as to further limit the position of the rear floor assembly 23 on the plane where the rear lifting platform 342 is located; and a guiding inclined surface is provided at one end of the rear limiting column 347 away from the rear lifting platform 342, so that the rear floor assembly 23 can smoothly fall onto the rear lifting platform 342 along the rear limiting column 347.

[0141] The positions and quantities of the aforementioned mechanisms for positioning and fastening the rear floor assembly 23 may be designed based on the specific structure and size of the rear floor assembly 23 .

[0142] Among them, the second lifting mechanism 33 includes a third driving mechanism 331, a second lifting platform 332, a second clamping mechanism 335, and a second positioning mechanism 336; the third driving mechanism 331 is arranged on the second bearing part 312 of the substrate 31; the second lifting platform 332 is connected to the third driving mechanism 331, and the third driving mechanism 331 drives the second lifting platform 332 to move along the vertical direction Z relative to the substrate 31, and the second lifting platform 332 is configured to carry the middle section assembly 22; the second clamping mechanism 335 is arranged on the second bearing part 312, and the second clamping mechanism 335 is configured to fasten the middle section assembly 22 located on the second lifting platform 332 to the second lifting platform 332; the second positioning mechanism 336 is arranged on the substrate 31, and the second positioning mechanism is configured to limit the position of the middle section assembly 22 on the plane where the second lifting platform 332 is located.

[0143] The second clamping mechanism 335 includes a plurality of clamping components disposed on the outer peripheral area of ​​the second carrying portion 312 .

[0144] Among them, four middle limiting columns 357 are evenly provided in the outer peripheral area of ​​the second bearing part 312, which are used to abut against the inner walls of the crossbeam and longitudinal beam of the middle section assembly 22, so as to further limit the position of the middle section assembly 22 on the plane where the second bearing part 312 is located; and the middle limiting column 357 is provided with a guide slope at one end away from the second bearing part 312, so that the rear floor assembly 23 can smoothly fall along the middle limiting column 357 onto the second lifting platform 332.

[0145] The position, quantity, etc. of the above-mentioned mechanisms for positioning and fastening the mid-section assembly 22 can be designed based on the specific structure and size of the mid-section assembly 22.

[0146] Wherein, the clamping assembly includes a clamping arm and a driving member.

[0147] In some embodiments, the lifting device can also be used to drive the middle section assembly to move relative to the base plate in a vertical direction of the base plate, or to drive the front cabin assembly and the middle section assembly to move toward each other at the same time, and to drive the rear floor assembly and the middle section assembly to move toward each other at the same time.

[0148] The lifting device can realize the upward movement or downward movement of the above-mentioned assembly, and can realize the assembly with other assemblies during the upward movement or downward movement of the above-mentioned assembly.

[0149] The present application further proposes a vehicle chassis assembly method for assembling equipment, the assembly equipment including a base plate and two first lifting mechanisms disposed on the base plate. The vehicle chassis includes a mid-section assembly, a front cabin assembly, and a rear floor assembly. As shown in FIG8 , the assembly method of this embodiment includes the following steps:

[0150] Step S81: Raise the lifting device to a preset height.

[0151] Step S82: Place the front cabin assembly and the rear floor assembly on the lifting device, and move the lifting device equipped with the front cabin assembly and the rear floor assembly relative to the base plate in a vertical direction of the base plate until the front cabin assembly and the rear floor assembly located on the lifting device are assembled with the middle section assembly located above the base plate; and / or place the middle section assembly on the lifting device, and move the lifting device equipped with the middle section assembly relative to the base plate in a vertical direction of the base plate until the middle section assembly located on the lifting device is assembled with the front cabin assembly and the rear floor assembly located above the base plate.

[0152] This embodiment uses a lifting device to achieve relative movement of the front cabin assembly, the rear floor assembly, and the middle section assembly along the vertical direction of the base plate. The front cabin assembly, the rear floor assembly, and the middle section assembly can be assembled and connected by the relative movement between the front cabin assembly, the rear floor assembly, and the middle section assembly, which can reduce the assembly difficulty and improve the assembly accuracy, and can improve the dimensional accuracy and consistency of the product after the vehicle chassis is assembled.

[0153] In some embodiments, the lifting device includes two first lifting mechanisms, which respectively lift the two first lifting mechanisms to a first preset height and a second preset height above the base plate; the front cabin assembly is set on one first lifting mechanism, the middle section assembly is set on the base plate, and the rear floor assembly is set on another first lifting mechanism; the first lifting mechanism with the front cabin assembly is lowered until the front cabin assembly and the middle section assembly are assembled, and the first lifting mechanism with the rear floor assembly is lowered until the rear floor assembly and the middle section assembly are assembled.

[0154] Taking the plug-in method as an example, in one application scenario, the first lifting mechanism used to support and position the front cabin assembly is raised to a first preset height, and the front cabin assembly is positioned on the first lifting mechanism at the first preset height. The first lifting mechanism used to support and position the rear floor assembly is raised to a second preset height, and the rear floor assembly is positioned on the first lifting mechanism at the second preset height. Next, the first lifting mechanism carrying the front cabin assembly is controlled to move vertically along the base plate until the second plug-in portion of the front cabin assembly located on the first lifting mechanism is plugged into the first plug-in portion of the middle section assembly located above the second support portion of the base plate, completing the plug-in assembly between the two. The first lifting mechanism carrying the rear floor assembly is controlled to move vertically along the base plate until the fourth plug-in portion of the rear floor assembly located on the first lifting mechanism is plugged into the third plug-in portion of the middle section assembly located on the base plate, completing the plug-in assembly between the two.

[0155] This embodiment uses the same base plate to support the middle section assembly and the first lifting mechanism for supporting the front cabin assembly and the first lifting mechanism for supporting the rear floor assembly, so that the middle section assembly, the front cabin assembly and the rear floor assembly can be assembled based on the same carrier, that is, the base plate. Therefore, the relative stability of the middle section assembly, the front cabin assembly and the rear floor assembly during assembly can be improved, thereby improving the dimensional accuracy and consistency of the product after the vehicle chassis is assembled; further, this embodiment uses a first lifting mechanism to support and position the front cabin assembly and realize the relative movement of the front cabin assembly and the middle section assembly along the vertical direction of the base plate, and can realize the assembly connection between the two through the relative movement between the two. Therefore, in this embodiment, the front cabin assembly can be first positioned at a high position by the first lifting mechanism, and then the front cabin assembly and the mid-section assembly can be assembled and connected through the lifting movement, which can reduce the assembly difficulty and improve the assembly precision. In this embodiment, the rear floor assembly can be positioned by another first lifting mechanism, and the rear floor assembly can be moved relative to the mid-section assembly along the vertical direction of the base plate. The assembly connection between the two can be achieved through the relative movement between the two. Therefore, in this embodiment, the rear floor assembly can be first positioned at a high position by the first lifting mechanism, and then the rear floor assembly and the mid-section assembly can be assembled and connected through the lifting movement, which can reduce the assembly difficulty and improve the assembly precision. Therefore, this embodiment can improve the dimensional accuracy and consistency of the product after the vehicle chassis is assembled.

[0156] In some embodiments, the lifting device can be used to drive the middle section assembly to move relative to the base plate in a vertical direction of the base plate, or to drive the front cabin assembly and the middle section assembly to move toward each other at the same time, and to drive the rear floor assembly and the middle section assembly to move toward each other at the same time.

[0157] The lifting device can realize the upward movement or downward movement of the above-mentioned assembly, and can realize the assembly with other assemblies during the upward movement or downward movement of the above-mentioned assembly.

[0158] In some embodiments, the first lifting mechanism includes a first lifting platform and a first positioning mechanism and a first clamping mechanism arranged on the lifting platform. The above-mentioned setting of the front cabin assembly on a first lifting mechanism includes: positioning the front cabin assembly on the corresponding first lifting platform by the first positioning mechanism, and fastening the front cabin assembly to the corresponding first lifting platform by the first clamping mechanism, which can improve the positioning stability of the front cabin assembly on the first lifting platform; the above-mentioned setting of the rear floor assembly on another first lifting mechanism includes: positioning the rear floor assembly on the corresponding first lifting platform by the first positioning mechanism, and fastening the rear floor assembly to the corresponding first lifting platform by the first clamping mechanism, which can improve the positioning stability of the front cabin assembly on the first lifting platform.

[0159] In some embodiments, the assembly equipment further comprises a second lifting mechanism, the midsection assembly being disposed on the second lifting mechanism, and the assembly method further comprises: raising the assembled midsection assembly to a second predetermined height on the base plate, thereby raising the assembled midsection assembly, the front cabin assembly, and the rear floor assembly to the second predetermined height. In this embodiment, the second lifting mechanism is used to eject the lower components of the assembled vehicle chassis.

[0160] In some embodiments, before the assembled midsection assembly is raised to a second preset height on the base plate, thereby raising the assembled midsection assembly, front cabin assembly, and rear floor assembly to the second preset height, the assembly method further comprises: fixing the assembled front cabin assembly to the midsection assembly, and fixing the assembled rear floor assembly to the midsection assembly. Before the vehicle chassis is ejected, the front cabin assembly is further fixedly connected to the midsection assembly, and the rear floor assembly is further fixedly connected to the midsection assembly to achieve an integrated connection of the vehicle chassis, improving its structural stability, and then ejecting it. This can improve ejection reliability and enable the ejected vehicle chassis to be used and delivered as an independent product.

[0161] In some embodiments, as shown in FIG9 , the mid-section assembly includes an energy bin assembly, the base plate includes an assembly platform, the first lifting platform includes a lifting pallet, the second lifting platform includes a jacking mechanism, and the vehicle chassis includes a CTC chassis. First, the energy bin assembly, which has passed the installation test, is placed on the assembly platform and positioned and clamped. Then, the front cabin assembly and the rear floor assembly are respectively placed on the raised lifting pallet and positioned and clamped. After the positioning and clamping of the sub-assembly components are completed, the front cabin assembly, the rear floor assembly, and the energy bin assembly are assembled by controlling the vertical descent of the front and rear lifting pallets. After the assemblies are assembled, the bolts are tightened according to the process flow. Finally, all the clamps are released, all the locating pins are lowered, and the jacking mechanism lifts the CTC chassis off the limit posts and locating pins to complete the assembly.

[0162] The present application further proposes a vehicle chassis, as shown in Figures 2, 6 and 7. The vehicle chassis 2 includes a mid-section assembly 22, a front cabin assembly 21 and a rear floor assembly 23. The specific structure of the vehicle chassis 2 can be found in the above embodiments.

[0163] The mid-section assembly 22 includes an energy bin assembly to form a CTC vehicle chassis.

[0164] The present application further proposes a vehicle, as shown in FIG1 , the introduction of which can be referred to the above embodiments.

[0165] The vehicle chassis provided in the embodiment of the present application includes a mid-section assembly, a front cabin assembly, and a rear floor assembly. The assembly equipment provided in the embodiment of the present application includes: a base plate; a lifting device, which is arranged on the base plate and is movably connected to the base plate along the vertical direction of the base plate. The lifting device is configured to carry and position the front cabin assembly and the rear floor assembly, and / or carry and position the mid-section assembly. The lifting device moves in the vertical direction relative to the base plate to achieve an assembly connection between the front cabin assembly and the rear floor assembly and the mid-section assembly. This embodiment achieves relative movement of the front cabin assembly and the rear floor assembly and the mid-section assembly along the vertical direction of the base plate through the lifting device. The assembly connection between the front cabin assembly and the rear floor assembly and the mid-section assembly can be achieved through the relative movement between the front cabin assembly and the rear floor assembly and the mid-section assembly, which can reduce the difficulty of assembly and improve the assembly accuracy, and can improve the dimensional accuracy and consistency of the product after the vehicle chassis is assembled.

[0166] Furthermore, the CTC vehicle chassis, as a single, large module, incorporates numerous modular manufacturing concepts during its manufacturing process. This assembly process significantly reduces chassis manufacturing complexity and part count.

[0167] Furthermore, after the middle section assembly completes the battery process installation test and passes it, the overall assembly of the three sections of the sub-assembly can be carried out, which can reduce the floor space of the CTC battery system assembly production line and reduce investment.

[0168] Furthermore, the front cabin assembly and the rear floor assembly are respectively positioned and clamped in the X / Y direction (refer to the vertical direction of the vertical direction Z mentioned above) in a free state, with high positioning accuracy. The assembled vehicle chassis has good dimensional consistency and can meet the manufacturing dimensional requirements of the entire vehicle.

[0169] Furthermore, when assembling the vehicle chassis, the operation is simple, and it can improve the problems of products being unable to be put into place due to dimensional tolerances, the products being unable to fully enter the locating pins due to the misalignment of the connection surface and the locating pin size, or the interference fit of the lap surface; the dimensional tolerance requirements for the connection surface are lower, and during assembly, it is easier to assemble after clamping and positioning by the equipment to ensure that the product is assembled in place.

[0170] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. An assembly device for a vehicle chassis, the vehicle chassis including a middle section assembly, a front engine compartment assembly, and a rear floor assembly; The assembly equipment comprises: substrate; A lifting device is arranged on the base plate and is movably connected to the base plate along the vertical direction of the base plate. The lifting device is configured to carry and position the front cabin assembly and the rear floor assembly, and / or carry and position the middle section assembly. The lifting device moves relative to the base plate along the vertical direction to achieve an assembly connection between the front cabin assembly and the rear floor assembly and the middle section assembly.

2. The assembly equipment according to claim 1, wherein The substrate is provided with a first bearing portion, a second bearing portion and a third bearing portion, wherein the second bearing portion is located between the first bearing portion and the third bearing portion, and the second bearing portion is configured to bear and position the middle section assembly; The lifting device includes two first lifting mechanisms, which are respectively arranged on the first bearing part and the third bearing part, and are movably connected with the base plate along the vertical direction of the base plate, one of the first lifting mechanisms is configured to carry and position the front cabin assembly, and the other first lifting mechanism is configured to carry and position the rear floor assembly; Among them, one of the first lifting mechanisms drives the front cabin assembly to move along the vertical direction relative to the base plate to achieve an assembly connection between the front cabin assembly and the middle section assembly, and another of the first lifting mechanisms drives the rear floor assembly to move along the vertical direction relative to the base plate to achieve an assembly connection between the rear floor assembly and the middle section assembly.

3. The assembly device according to claim 2, wherein, The first lifting mechanism comprises: A first driving mechanism is arranged on the substrate; A first lifting platform is connected to the first driving mechanism, and the first driving mechanism drives the first lifting platform to move relative to the base plate along the vertical direction. The first lifting platform is configured to carry the front cabin assembly or the rear floor assembly.

4. The assembly device according to claim 3, wherein, The first lifting mechanism also includes: The guide assembly is arranged on the base plate and is movably connected to the first lifting platform. The first lifting platform moves relative to the base plate along the vertical direction under the limiting action of the guide assembly.

5. The assembly equipment according to claim 4, wherein, A guide column is provided on one side of the first lifting platform close to the base plate. The guide assembly includes a linear bearing. The base of the linear bearing is fixedly arranged on the base plate. The guide column is at least partially arranged in the linear bearing.

6. The assembly device according to claim 5, wherein, The guide assembly includes a plurality of linear bearings, and a plurality of uniformly arranged guide posts are arranged in an outer peripheral area of ​​a side of the first lifting platform close to the substrate, and the plurality of linear bearings are arranged in one-to-one correspondence with the plurality of guide posts.

7. The assembly equipment according to any one of claims 2 to 6, wherein, The first lifting mechanism also includes: The first clamping mechanism is disposed on a side of the first lifting platform away from the base plate and is configured to fasten the front cabin assembly or the rear floor assembly located on the first lifting platform to the first lifting platform.

8. The assembly equipment according to claim 7, wherein The first clamping mechanism comprises: A first clamping assembly is arranged on a side of the first lifting platform away from the substrate, and a fastening direction of the first clamping assembly is the same as the vertical direction; The second clamping assembly is arranged on a side of the first lifting platform away from the substrate, and the fastening direction of the second clamping assembly is perpendicular to the vertical direction.

9. The assembly device according to any one of claims 2 to 8, wherein, The first lifting mechanism also includes: The first positioning mechanism is arranged on the substrate and configured to define the position of the front engine compartment assembly or the rear floor assembly on the plane where the first lifting table is located.

10. The assembly equipment according to claim 9, wherein, The first positioning mechanism includes: The second driving mechanism is arranged on the substrate; The positioning pin is connected to the second driving mechanism and can expand and contract along the vertical direction under the drive of the second driving mechanism.

11. The assembly equipment according to any one of claims 1 to 10, wherein, The assembly equipment further includes: The second lifting mechanism is arranged on the second bearing part and configured to carry and position the middle section assembly, and is also configured to drive the middle section assembly to move along the vertical direction away from the substrate after the assembly of the middle section assembly, the front engine compartment assembly and the rear floor assembly is completed.

12. The assembly device according to claim 11, wherein, The second lifting mechanism includes: The third driving mechanism is arranged on the substrate; The second lifting table is connected to the third driving mechanism. The third driving mechanism drives the second lifting table to move along the vertical direction relative to the substrate, and the second lifting table is configured to carry the middle section assembly.

13. The assembly equipment according to claim 12, wherein, The second lifting mechanism further includes: The second clamping mechanism is arranged on the second bearing part and configured to fasten the middle section assembly located on the second lifting table to the second lifting table.

14. The assembly device according to claim 12 or 13, wherein, The second lifting mechanism further includes: The second positioning mechanism is arranged on the substrate and configured to define the position of the middle section assembly on the plane where the second lifting table is located.

15. An assembly method for a vehicle chassis, which is used for assembly equipment. The assembly equipment includes a substrate and a lifting device arranged on the substrate. The vehicle chassis includes a middle section assembly, a front engine compartment assembly and a rear floor assembly. The assembly method includes: Raise the lifting device to a preset height; Arrange the front engine compartment assembly and the rear floor assembly on the lifting device, and move the lifting device provided with the front engine compartment assembly and the rear floor assembly along the vertical direction of the substrate relative to the substrate until the front engine compartment assembly and the rear floor assembly located on the lifting device are assembled with the middle section assembly located above the substrate; and / or, arrange the middle section assembly on the lifting device, and move the lifting device provided with the middle section assembly along the vertical direction of the substrate relative to the substrate until the middle section assembly located on the lifting device is assembled with the front engine compartment assembly and the rear floor assembly located above the substrate.

16. The assembly method according to claim 15, wherein, The lifting device includes two first lifting mechanisms. The step of raising the lifting device to a preset height includes: Raise the two first lifting mechanisms to a first preset height and a second preset height above the substrate respectively; The step of arranging the front engine compartment assembly and the rear floor assembly on the lifting device, and moving the lifting device provided with the front engine compartment assembly and the rear floor assembly along the vertical direction of the substrate relative to the substrate until the front engine compartment assembly and the rear floor assembly located on the lifting device are assembled with the middle section assembly located above the substrate includes: Set the front engine compartment assembly on one of the first lifting mechanisms, set the middle section assembly on the base plate, and set the rear floor assembly on the other first lifting mechanism; Lower the first lifting mechanism with the front engine compartment assembly until the front engine compartment assembly is completely assembled with the middle section assembly, and lower the first lifting mechanism with the rear floor assembly until the rear floor assembly is completely assembled with the middle section assembly.

17. The assembly method according to claim 16, wherein, The first lifting mechanism includes a first lifting platform, a first positioning mechanism and a first clamping mechanism provided on the first lifting platform. Setting the front engine compartment assembly on one of the first lifting mechanisms includes: Position the front engine compartment assembly on the corresponding first lifting platform through the first positioning mechanism; Fasten the front engine compartment assembly to the corresponding first lifting platform through the first clamping mechanism; Setting the rear floor assembly on the other first lifting mechanism includes: Position the rear floor assembly on the corresponding first lifting platform through the first positioning mechanism; Fasten the rear floor assembly to the corresponding first lifting platform through the first clamping mechanism.

18. The assembly method according to claim 16 or 17, wherein, The assembly equipment further includes a second lifting mechanism, and the middle section assembly is arranged on the second lifting mechanism. The assembly method further includes: Raise the assembled middle section assembly to a third preset height on the base plate so that the assembled middle section assembly, the front engine compartment assembly and the rear floor assembly are raised to the third preset height.

19. The assembly method according to claim 18, wherein, Before raising the assembled middle section assembly to the third preset height on the base plate so that the assembled middle section assembly, the front engine compartment assembly and the rear floor assembly are raised to the third preset height, the assembly method further includes: Fix the assembled front engine compartment assembly to the middle section assembly, and fix the assembled rear floor assembly to the middle section assembly.

20. A vehicle chassis, the vehicle chassis comprising: Middle section assembly, front engine compartment assembly, rear floor assembly. Among them, the vehicle chassis realizes the assembly among the middle section assembly, the front engine compartment assembly and the rear floor assembly through the assembly equipment according to any one of claims 1 to 14 and by using the assembly method according to any one of claims 15 to 19.

21. The vehicle chassis according to claim 20, wherein, The middle section assembly includes an energy storage compartment assembly.

22. A vehicle, comprising the vehicle chassis according to claim 20 or 21.

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