A vehicle frame cross member, vehicle frame and off-road vehicle

Abstract

The application discloses a vehicle frame crossbeam, a vehicle frame and an off-road vehicle, relates to the technical field of vehicle frames, and solves the technical problem of unreasonable load distribution when the structure of the off-road vehicle is complex and the space structure is compact. The vehicle frame crossbeam comprises an arched beam body, a pin shaft and two horizontal mounting plates, the pin shaft is rotatably installed at the middle protrusion of the arched beam body, the axial direction of the pin shaft is the same as the axial direction of the arched beam body, so as to form a hinged mounting position, the two horizontal mounting plates are fixedly connected with the two side bottom ends of the arched beam body respectively, the horizontal mounting plates are arranged in a staggered mode along the axial direction of the arched beam body and the middle protrusion of the arched beam body, and the horizontal mounting plates are provided with mounting interfaces for crane bases. The lateral torsional load of the upper loading cabin is avoided from being transmitted to the vehicle frame body through the front-to-rear pin shaft, the risk of local stress concentration of the vehicle frame is reduced, the torsional deformation torque of the vehicle frame is released, the crane bases are mounted on the horizontal mounting plates, and the integrated design of the partial supports and the crossbeam is realized.

Description

Technical Field

[0001] This invention relates to the field of vehicle frame technology, and more particularly to a vehicle frame crossbeam, an automobile frame, and an off-road vehicle. Background Technology

[0002] Off-road vehicle frames typically employ a frame structure consisting of left and right longitudinal beams connected and riveted to several crossbeams. Mounting supports are designed according to the installation requirements of various equipment, and the crossbeams can also serve as interfaces for supporting the superstructure equipment. This type of structure, with its single function and adaptability to simple superstructure structures, is commonly used in heavy-duty off-road vehicles and box trucks.

[0003] However, the off-road vehicle frame is the load-bearing base of the chassis. Multiple different superstructures are installed on the chassis simultaneously, and the frame has to be designed with connection interfaces in a confined space. Designing separate, independent functional structures not only increases weight and reduces installation manufacturability, but also presents significant design challenges.

[0004] Therefore, in off-road vehicles with complex superstructures and compact spatial structures, such as vehicle-mounted cranes and box-type cargo compartments, there is a problem of unreasonable load distribution. Summary of the Invention

[0005] This application provides a vehicle frame crossbeam, an automobile frame, and an off-road vehicle, which solves the technical problem of unreasonable load distribution when the superstructure of an off-road vehicle is complex and the spatial structure is compact.

[0006] This application provides a vehicle frame crossbeam, including an arched beam, a pin, and two horizontal mounting plates. The pin is rotatably mounted on the middle protrusion of the arched beam, and the axial direction of the pin is the same as the axial direction of the arched beam to form a hinged mounting position. The two horizontal mounting plates are fixedly connected to the bottom ends of both sides of the arched beam, and the horizontal mounting plates are offset from the middle protrusion of the arched beam along the axial direction of the arched beam. The horizontal mounting plates are provided with mounting interfaces for crane bases.

[0007] Optionally, the arched beam includes an upper cover plate and a lower sealing plate arranged opposite each other, and a front upright plate and a rear upright plate arranged opposite each other. The upper cover plate, the lower sealing plate, the front upright plate and the rear upright plate are all arched. The two sides of the front upright plate are fixedly connected to the upper cover plate and the lower sealing plate respectively, and the two sides of the rear upright plate are fixedly connected to the upper cover plate and the lower sealing plate respectively.

[0008] Optionally, both the front and rear uprights have a pin mounting hole in the middle of the protrusion, and a bushing is installed in the pin mounting hole, with the pin rotatably mounted in the bushing.

[0009] Optionally, the arched beam also includes two bushing reinforcement plates, which are fixedly connected to the bushings, and the two bushing reinforcement plates are fixed to the outer sides of the front and rear uprights, respectively.

[0010] Optionally, the top cover plate extends along the axis of the arch beam at both ends in the length direction of the arch beam to form a side extension for fixing the horizontal mounting plate; and the side extension extends along the height direction of the arch beam, and the side extension is provided with a side mounting interface.

[0011] Optionally, the frame crossbeam also includes several reinforcing plates, which are fixedly connected to the horizontal mounting plate and the side extension.

[0012] An automobile frame includes the aforementioned frame crossbeam, and the automobile frame also includes two longitudinal beams, with the two ends of the arched beams being rigidly connected to the longitudinal beams in the longitudinal direction.

[0013] Optionally, the longitudinal beam includes a web, an upper flange fixedly connected to the top of the web, and a lower flange fixedly connected to the bottom of the web. The lower flange of any longitudinal beam is positioned towards another longitudinal beam, and the upper flange of any longitudinal beam is positioned away from another longitudinal beam.

[0014] Optionally, the web is provided with a mounting position for a radiator.

[0015] An off-road vehicle includes the aforementioned vehicle frame, a superstructure compartment mounted on the vehicle frame, and a superstructure crane.

[0016] The beneficial effects of this application are as follows: A frame crossbeam is provided, comprising an arched beam as the main body, a pin mounted on the arched beam, and two horizontal mounting plates. Specifically, the axial direction of the pin is arranged along the axis of the arched beam, which is the same as the width direction of the arched beam. The pin is rotatably mounted on the central protrusion of the arched beam, forming a hinged mounting position for mounting the superstructure compartment. The through-type pin prevents the lateral torsional load of the superstructure compartment from being transmitted to the frame body, reducing the risk of local stress concentration in the frame. It also facilitates the release of torsional deformation torque of the frame, improving the risk of damage to the superstructure equipment. The two ends of the arched beam along its length are the bottom ends on both sides, where the two horizontal mounting plates are respectively mounted. Furthermore, the horizontal mounting plate along the width of the arched beam is offset from the middle protrusion of the arched beam, thus providing a reasonable spatial arrangement. This allows the crane base of the superstructure crane to be smoothly installed onto the horizontal mounting plate, coordinating the two different types of superstructure equipment. The arched bottom side of the arched beam is open, meeting the spatial arrangement requirements for avoiding the transmission system components. On the other hand, compared to the scheme of designing and installing supports according to the installation requirements of various equipment, the present invention realizes the integrated design of some supports and crossbeams, reducing the repetitive design of crossbeams, reducing weight, optimizing the structure, saving overall layout space, greatly improving the layout efficiency of the chassis and superstructure, increasing the connection strength of the left and right mounting interfaces, and improving installation accuracy. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention.

[0018] Figure 1 This application provides a structural schematic diagram of a longitudinal beam in an automobile frame;

[0019] Figure 2 This application provides a structural schematic diagram of a vehicle frame crossbeam;

[0020] Figure 3 This is a partial structural diagram of the automobile frame provided in this application.

[0021] Attached diagram labels: 10-Chassis crossbeam, 100-Arched beam, 111-Length direction, 112-Width direction, 113-Height direction, 120-Upper cover plate, 121-Side extension, 121a-Side mounting interface, 130-Lower sealing plate, 140-Front upright plate, 200-Pin shaft, 210-Bushing, 220-Bushing reinforcement plate, 300-Horizontal mounting plate, 400-Reinforcement plate, 20-Automobile frame, 21-Longitudinal beam, 21a-Web plate, 21aa-Radiator mounting position, 21b-Upper flange, 21c-Lower flange. Detailed Implementation

[0022] This application provides a frame crossbeam, an automobile frame, and an off-road vehicle, which solves the technical problem of unreasonable load distribution when the superstructure of an off-road vehicle is complex and the spatial structure is compact.

[0023] The technical solution in this application is to solve the above-mentioned technical problems, and the general idea is as follows:

[0024] A vehicle frame crossbeam includes an arched beam, a pin, and two horizontal mounting plates. The pin is rotatably mounted on the central protrusion of the arched beam, and the axial direction of the pin is the same as the axial direction of the arched beam to form a hinged mounting position. The two horizontal mounting plates are fixedly connected to the bottom ends of both sides of the arched beam, respectively. The horizontal mounting plates are offset from the central protrusion of the arched beam along the axial direction of the arched beam, and the horizontal mounting plates are provided with mounting interfaces for crane bases.

[0025] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0026] The off-road vehicle frame is the load-bearing base of the chassis. Multiple different superstructures are installed on the chassis simultaneously. Designing connection interfaces within the confined space of the frame, and individually designing structures with independent functions, not only increases weight and reduces installation maneuverability but also significantly increases design difficulty. The installation and operation conditions of the vehicle-mounted crane are completely different from those of a box-type cargo hold; the two cannot interfere with each other. Box-type cargo holds transport precision equipment, and the cabin cannot deform during lifting operations; therefore, interference forces must be eliminated from the structural design. Crane operations require the mounting base to have sufficient strength and rigidity; therefore, rigid connections are used, and the cabin must absorb the forces that would cause the frame to deform under crane loads.

[0027] Example 1

[0028] This embodiment provides a frame crossbeam 10 to solve the above-mentioned problems.

[0029] Specifically, the frame crossbeam 10 includes an arched beam 100 as the main body, a pin 200 mounted on the arched beam 100, and two horizontal mounting plates 300. The horizontal mounting plates 300 are designed to provide a horizontal mounting surface.

[0030] Please follow Figure 2 The pin 200 is rotatably mounted on the middle protrusion of the arch beam 100, with the axial direction of the pin 200 aligned with the axial direction of the arch beam 100. Figure 2 The axial direction of the arched beam 100 shown is also the width direction 112 of the arched beam 100, and will be defined as the width direction 112 in the following description. In the frame, the width direction 112 of the arched beam 100 is also the longitudinal direction of the frame. A hinged mounting position is formed at the pin 200, which is used to mount the superstructure compartment. Specifically, the through-type pin 200 prevents the lateral torsional load of the superstructure compartment from being transmitted to the frame body, reducing the risk of localized stress concentration in the frame. It also facilitates the release of torsional deformation torque of the frame, improving the risk of damage to the superstructure equipment.

[0031] Please follow Figure 2 The arched beam 100 has two ends along its length 111 as its bottom sides. Two horizontal mounting plates 300 are installed at these positions, i.e., the two horizontal mounting plates 300 are fixedly connected to the bottom sides of the arched beam 100. Furthermore, the horizontal mounting plates 300 are offset from the middle protrusion of the arched beam 100 along its width 112. Figure 2 As shown, the horizontal mounting plate 300 is provided with a mounting interface for the crane base, so as to fix the crane base of the superstructure crane to the horizontal mounting plate 300. In detail, by setting the vertical and horizontal misalignment and the front and rear misalignment of the horizontal mounting plate 300 and the pin shaft 200, the two different types of superstructure equipment can be coordinated and cooperated through reasonable spatial arrangement.

[0032] One of the beneficial effects of the aforementioned frame crossbeam 10 is that, through the arched design of the arched beam 100, specifically with the bottom side of the arch open, it meets the space arrangement requirements for avoiding the transmission system components during installation; this space is beneficial for later maintenance work and for early process assembly operations; it effectively improves the interference problem that exists during installation, and also allows the superstructure compartment to have a higher installation height after installation, meeting the requirements for a higher installation height of the superstructure compartment.

[0033] Compared to the scheme of designing and installing supports based on the installation requirements of various equipment, the frame crossbeam 10 in this embodiment realizes the integrated design of some supports and crossbeams, thereby reducing the repetitive design of crossbeams, reducing the weight of the frame, optimizing the structure, saving overall layout space, and greatly improving the layout efficiency of the chassis and superstructure; it also includes increasing the connection strength of the left and right mounting interfaces, improving the installation accuracy, and the rigid connection between the crane base and the horizontal mounting plate 300, ensuring sufficient strength and rigidity.

[0034] As mentioned above, the upper structure is installed at pin 200. It should be further explained that the mounting structure of the upper structure has a U-shaped groove. During installation, this U-shaped groove is placed upside down, fitting the U-shaped groove of the mounting structure against the shaft of pin 200; as... Figure 3 As shown, the pin 200 passes through the arched beam 100 from front to back, and the upper hull is installed at both the front and rear protruding parts of the pin 200. Furthermore, one end of the pin 200 is as shown... Figure 2 The design shown has a large end and a pin hole at the other end, which is equipped with a cotter pin and a washer to reduce the gap between the U-shaped groove installation structure of the upper body and the arched beam 100.

[0035] Alternatively, please refer to Figure 2 The arched beam 100 includes an upper cover plate 120 and a lower cover plate 130 arranged opposite each other, and a front upright plate 140 and a rear upright plate arranged opposite each other. The upper cover plate 120, the lower cover plate 130, the front upright plate 140, and the rear upright plate are all arched. The two sides of the front upright plate 140 are fixedly connected to the upper cover plate 120 and the lower cover plate 130 by welding or other means, and the two sides of the rear upright plate are fixedly connected to the upper cover plate 120 and the lower cover plate 130 by welding or other means. The connection between the plates is fixed by welding, which gives the frame crossbeam 10 a compact structure with sufficient strength and rigidity to achieve the aforementioned beneficial effects.

[0036] Alternatively, please refer to Figure 2The front upright plate 140 and the rear upright plate are provided with mounting holes for pins 200 in the middle protrusions. A bushing 210 is installed in the mounting holes for pins 200. The pins 200 are rotatably installed in the bushings 210. The connection between the bushings 210 and the front upright plate 140 and the rear upright plate is a fixed connection, preferably a welded fixed connection.

[0037] Optionally, the arched beam 100 also includes two bushing reinforcing plates 220, which are fixedly connected to the bushing 210, preferably by welding. The two bushing reinforcing plates 220 are respectively fixed to the outer sides of the front upright plate 140 and the rear upright plate, and are respectively fixedly connected to the front upright plate 140 and the rear upright plate. Figure 2 A bushing reinforcement plate 220 is shown fixed to the outside of the front upright plate 140 (another bushing reinforcement plate is not shown due to the viewing angle). The outside of the front upright plate 140 and the rear upright plate referred to here are specifically the side of the front upright plate 140 away from the rear upright plate and the side of the rear upright plate away from the front upright plate 140.

[0038] The beneficial effects of using bushing reinforcement plate 220 in this solution include: increasing the strength and rigidity of the front upright plate 140 and the rear upright plate; increasing the strength and rigidity of bushing 210; such as Figure 2 As shown, the edges of the upper cover plate 120 and the lower cover plate 130 protrude from the plane of the front upright plate 140. The bushing reinforcement plate 220 fills the groove formed by the edges of the upper cover plate 120, the lower cover plate 130, and the plane of the front upright plate 140. Thus, when the upper body may move axially relative to the frame crossbeam 10 at the pin 200 during operation, the impact surface between the upper body and the arched beam 100 changes from the original edges of the upper cover plate 120 and the lower cover plate 130 to the edges of the upper cover plate 120, the lower cover plate 130, and the plate surface of the bushing reinforcement plate 220. By increasing the contact area, the adverse effects of movement are mitigated.

[0039] The above-mentioned limitation is that, in the width direction 112 of the arched beam 100, the horizontal mounting plate 300 is offset from the intermediate protrusion of the arched beam 100. In some possible embodiments, please refer to... Figure 2 The upper cover plate 120 extends along the width direction 112 of the arch beam 100 at both ends in the length direction 111 of the arch beam 100 to form a side extension 121 for fixed connection of the horizontal mounting plate 300.

[0040] Furthermore, the side extension 121 extends along the height direction 113 of the arched beam 100, and the side extension 121 is provided with a side mounting interface 121a. Please refer to the reference. Figures 1 to 3 The side mounting interface 121a mates with the bolt holes of the longitudinal beam 21, forming a [structure / feature] after the bolts are installed. Figure 3 The assembly structure shown.

[0041] Alternatively, please refer to Figure 2 The frame crossbeam 10 also includes several reinforcing plates 400, which are fixedly connected to the horizontal mounting plate 300 and the side extension 121. The reinforcing plate 400 can be shaped as follows: Figure 2 The corner plate shape shown in the figure helps to strengthen the connection between the arched beam 100 and the horizontal mounting plate 300, increases the strength and rigidity of the horizontal mounting plate 300, and improves the overall strength and rigidity of the frame structure.

[0042] Example 2

[0043] This embodiment provides an automobile frame 20, including the frame crossbeam 10 of embodiment 1. The automobile frame 20 also includes two longitudinal beams 21, and the two ends of the arched beam 100 in the length direction 111 are rigidly connected to the longitudinal beams 21 respectively.

[0044] Alternatively, please refer to Figure 1 and Figure 3 The longitudinal beam 21 includes a web 21a, an upper flange 21b fixedly connected to the top of the web 21a, and a lower flange 21c fixedly connected to the bottom of the web 21a. The lower flange 21c of any longitudinal beam 21 faces the other longitudinal beam 21, and the upper flange 21b of any longitudinal beam 21 is located away from the other longitudinal beam 21. By setting flanges, the strength and stiffness of the longitudinal beam 21 are improved. In the frame, the lower flange 21c is designed to be turned inward, which increases the lateral bending resistance of the longitudinal beam 21.

[0045] Alternatively, please refer to Figure 3 The web plate 21a is provided with a radiator mounting position 21aa.

[0046] Example 3

[0047] This embodiment provides an off-road vehicle, including the vehicle frame 20 in embodiment 2, as well as the superstructure compartment and superstructure crane mounted on the vehicle frame 20.

[0048] The crane base of the superstructure crane is installed at the horizontal mounting plate 300 of the frame crossbeam 10 of the vehicle frame 20. The two horizontal mounting plates 300 of the frame crossbeam 10 provide two mounting points. Two supports are also provided on the longitudinal beam 21 of the frame to realize the installation of the crane base.

[0049] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0050] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A vehicle frame crossbeam, characterized in that, The frame crossbeam includes: Arched beam; A pin is rotatably mounted on the central protrusion of the arched beam, the axial direction of the pin being the same as the axis of the arched beam to form a hinged mounting position; and Two horizontal mounting plates are fixedly connected to the bottom ends of both sides of the arched beam, and the horizontal mounting plates are offset from the middle protrusion of the arched beam along the axial direction of the arched beam. The horizontal mounting plates are provided with mounting interfaces for crane bases. The arched beam includes an upper cover plate and a lower sealing plate arranged opposite each other, and a front upright plate and a rear upright plate arranged opposite each other. The upper cover plate, the lower sealing plate, the front upright plate and the rear upright plate are all arched. The two sides of the front upright plate are fixedly connected to the upper cover plate and the lower sealing plate, respectively. The two sides of the rear upright plate are fixedly connected to the upper cover plate and the lower sealing plate, respectively. Both the front upright plate and the rear upright plate have pin mounting holes at their central protrusions. A bushing is installed in the pin mounting hole, and the pin is rotatably mounted in the bushing. The upper cover plate extends along the axis of the arched beam at both ends along the length of the arched beam to form a side extension for fixed connection of the horizontal mounting plate; and the side extension extends along the height of the arched beam, and the side extension is provided with a side mounting interface.

2. The frame crossbeam as described in claim 1, characterized in that, The arched beam also includes two bushing reinforcement plates, which are fixedly connected to the bushing. The two bushing reinforcement plates are respectively fixed to the outer side of the front upright plate and the rear upright plate.

3. The frame crossbeam as described in claim 1, characterized in that, The crossbeam of the frame also includes several reinforcing plates, which are fixedly connected to the horizontal mounting plate and the side extension.

4. A car frame, characterized in that, The vehicle frame includes the crossbeam as described in any one of claims 1-3, and the vehicle frame further includes two longitudinal beams, with the two ends of the arched beam being rigidly connected to the longitudinal beams respectively in the longitudinal direction.

5. The automobile frame as described in claim 4, characterized in that, The longitudinal beam includes a web, an upper flange fixedly connected to the top of the web, and a lower flange fixedly connected to the bottom of the web. The lower flange of any longitudinal beam is disposed towards the other longitudinal beam, and the upper flange of any longitudinal beam is disposed away from the other longitudinal beam.

6. The automobile frame as described in claim 5, characterized in that, The web is provided with a radiator mounting position.

7. An off-road vehicle, characterized in that, It includes a vehicle frame as described in any one of claims 4-6, and a superstructure compartment and superstructure crane mounted on the vehicle frame.

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