Frame structure suitable for bearing equipment and mounting method

Abstract

The invention discloses a frame structure suitable for bearing equipment and a mounting method, solves the problems that in the prior art, an engine is inconvenient to mount or dismount in a frame structure, and the mounting space for mounting a steering pull rod on a front plate spring is insufficient, and has the beneficial effect of being high in structural stability. According to the specific scheme, the frame structure suitable for bearing the equipment comprises a frame longitudinal beam, a front beam is arranged at the front end of the frame longitudinal beam, a tail beam is arranged at the rear end of the frame longitudinal beam, the frame longitudinal beam comprises a frame left longitudinal beam body and a frame right longitudinal beam body which are oppositely arranged, and the frame left longitudinal beam body and the frame right longitudinal beam body are connected through a plurality of frame cross beams; in the direction from the front beam to the tail beam, the distance between the frame left longitudinal beam and the frame right longitudinal beam is wide in the front and narrow in the rear, the distance between the frame left longitudinal beam and the frame right longitudinal beam is large in the front section to support an engine, and the distance between the middle section and the tail section is kept within a set range to support a gearbox through the middle section and support equipment through the tail section.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile manufacturing, and in particular to a frame structure suitable for carrying equipment and an installation method thereof. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] The frame structure, a crucial component of the vehicle chassis, serves as the vehicle's integrated platform, providing mechanical, electrical, and pneumatic interfaces for various systems within special vehicles. In addition to bearing the heavy loads incurred by the chassis during operation, the frame also withstands various dynamic and additional loads generated during vehicle operation. The quality of its structural design significantly impacts the reliability and safety of the entire vehicle chassis structure.

[0004] Since some equipment have higher requirements for the frame during transportation, they require both high load-bearing capacity and good stability and anti-overturning; therefore, traditional transport vehicles usually adopt traditional "Z" type, "C" type and " The frame longitudinal beam structure is in the form of " ", and the integral cross beam is inserted between the frame longitudinal beams. The whole frame is composed of riveted, screwed or welded to provide solid support for the good driving performance of the whole vehicle.

[0005] However, the large cross-section of the beam in the traditional frame structure results in a relatively small internal space, making it impossible to arrange the required leaf springs and steering rods. In addition, the engine suspension and other installation components take up a large space and are difficult to install or remove, resulting in poor overall maintainability. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a frame structure suitable for carrying equipment, which can greatly improve the comprehensive performance of transport vehicles.

[0007] In order to achieve the above object, the present invention is implemented through the following technical solutions: A frame structure suitable for carrying equipment includes a frame longitudinal beam, a front beam is arranged at the front end of the frame longitudinal beam, and a tail beam is arranged at the rear end of the frame longitudinal beam, the frame longitudinal beam includes a left frame longitudinal beam and a right frame longitudinal beam arranged opposite to each other, and the left frame longitudinal beam and the right frame longitudinal beam are connected by multiple frame cross beams, and from the front beam to the tail beam, the distance between the left frame longitudinal beam and the right frame longitudinal beam is wide at the front and narrow at the rear, and the distance between the left frame longitudinal beam and the right frame longitudinal beam is larger in the front section to install a suspension system, and the distance between the middle section and the rear section is maintained within a set range to support the engine through the middle section and support the equipment through the rear section, and from the front beam to the tail beam, the height between the longitudinal cross sections of the left frame longitudinal beam and the right frame longitudinal beam and the ground is higher at the front and lower at the rear to facilitate the installation of a front leaf spring and a steering rod at a higher position at the front section of the left frame longitudinal beam and the right frame longitudinal beam.

[0008] The frame structure suitable for carrying equipment as described above, wherein the left longitudinal beam and the right longitudinal beam of the frame are bent inward at their respective front sections, so that the cross section of the frame narrows from wide to form a variable cross-section structure that is wide at the front and narrow at the rear; In the direction from the front beam to the tail beam, the height change position of the longitudinal section of the left longitudinal beam of the frame and the right longitudinal beam of the frame exceeds the bending position of the left longitudinal beam of the frame and the right longitudinal beam of the frame.

[0009] As described above, a frame structure suitable for carrying equipment, the upper sides of the left longitudinal beam of the frame and the right longitudinal beam of the frame support a sub-frame, the sub-frame is arranged at a distance from the thickness change point of the left longitudinal beam of the frame and the right longitudinal beam of the frame, the sub-frame includes a left longitudinal beam of the sub-frame fixed to the upper side of the left longitudinal beam of the frame and a right longitudinal beam of the sub-frame fixed to the upper side of the right longitudinal beam of the frame, and multiple groups of sub-frame cross beams are respectively connected to both sides of the two sub-frame longitudinal beams, and some adjacent sub-frame cross beams are connected.

[0010] A frame structure suitable for carrying equipment as described above, wherein the subframe crossbeams on both sides of the subframe are connected to the wheel chocks, and the two wheel chocks in the middle are connected in a V-shape; The sub-frame left longitudinal beam and the sub-frame right longitudinal beam in the sub-frame are respectively connected to the tail beam. A recess is provided on one side of the sub-frame close to the tail beam to support a mounting flange, and the mounting flange is connected to the equipment.

[0011] A frame structure suitable for carrying equipment as described above, wherein a support leg is connected to the bottom side of the tail beam to lower the center of mass of the tail beam, the length of the support leg is greater than the distance between the left longitudinal beam and the right longitudinal beam of the frame, and the length of the support leg is less than the width of the subframe; A support beam is arranged between the upper side surface of the support leg and the end portion of the auxiliary frame, and the support beam is arranged obliquely.

[0012] As described above, in a frame structure suitable for carrying equipment, the tail beam is a transverse beam, which connects the left longitudinal beam and the right longitudinal beam of the frame, and the ends of the left longitudinal beam and the right longitudinal beam of the subframe in the subframe are placed on the upper side of the tail beam.

[0013] As described above, a frame structure suitable for carrying equipment is provided, wherein the front sections of the left longitudinal beam and the right longitudinal beam of the frame are both provided with a first support portion and a second support portion, the first support portion and the second support portion are both provided higher than the left longitudinal beam and the right longitudinal beam of the frame, the first support portion is provided close to the front beam, the first support portion and the second support portion are provided at an interval, and the second support portion and the third support portion are provided at an interval.

[0014] As described above, a frame structure suitable for carrying equipment is provided, wherein the subframe is further provided with a left longitudinal beam and a right longitudinal beam, a plurality of subframe cross beams are connected between the left longitudinal beam and the left longitudinal beam of the subframe, a plurality of subframe cross beams are connected between the right longitudinal beam and the right longitudinal beam of the subframe, and some of the subframe cross beams are connected by connecting beams.

[0015] In a second aspect, the present invention discloses a vehicle, which adopts the frame structure suitable for carrying equipment.

[0016] In a third aspect, the present invention further provides a method for installing a frame structure suitable for carrying equipment, comprising the following contents: Manufacturing the left longitudinal beam and the right longitudinal beam of the frame, wherein the distance between the left longitudinal beam and the right longitudinal beam is wider at the front and narrower at the rear during the manufacturing process, and the height of the longitudinal sections of the left longitudinal beam and the right longitudinal beam from the ground is higher at the front and lower at the rear; fabrication of frame rails and subframes; The left longitudinal beam of the frame and the right longitudinal beam of the frame are connected by a plurality of frame cross beams; A front beam is provided at the front ends of the left longitudinal beam and the right longitudinal beam of the frame, and a tail beam is provided at the rear ends; A subframe is installed on the upper side of the left longitudinal beam and the right longitudinal beam of the frame, and a distance is set between the subframe and the height change position of the longitudinal section of the left longitudinal beam and the right longitudinal beam of the frame.

[0017] The beneficial effects of the present invention are as follows: 1) The present invention provides a vehicle frame structure including a vehicle frame longitudinal beam, wherein the vehicle frame longitudinal beam includes a left vehicle frame longitudinal beam and a right vehicle frame longitudinal beam. The distance between the left vehicle frame longitudinal beam and the right vehicle frame longitudinal beam is wider in the front and narrower in the rear. In this way, the suspension system is supported by the wider portion of the front section of the vehicle frame longitudinal beam, which helps to improve the support strength of the front section. The middle section of the vehicle frame longitudinal beam is used to support the engine and its radiator water tank and other equipment. The driver's cab is supported by the front and middle sections of the frame, and the equipment is supported by the rear section. The arrangement of the vehicle frame structure can optimize the vehicle layout, ensure the functionality and stability of the overall vehicle frame structure, facilitate the installation or removal of the engine, and facilitate maintenance work.

[0018] 2) In the present invention, the height of the frame longitudinal beams from the front beam to the tail beam is higher in the front and lower in the rear from the ground. In this way, the front leaf spring and steering rod are installed at the higher point of the front section of the frame longitudinal beam, thereby optimizing space. This solves the problem of the traditional frame that the front leaf spring and steering rod cannot be arranged due to limited space, effectively avoids the risk of interference between components, and correspondingly increases the strength of the rear side to ensure support strength, greatly improving the stability and reliability of the vehicle layout performance, and making the frame structure have high load-bearing capacity, stability and anti-overturning resistance.

[0019] 3) The present invention provides a subframe structure, with one end of the subframe spaced apart from the bend of the frame longitudinal beam and the other end adjacent to and connected to the tail beam. The subframe ensures the structural strength of the middle and tail sections of the frame structure. The subframe facilitates the installation of a mounting flange, which facilitates connection to special equipment. This allows for rational planning of the vehicle equipment layout and ensures overall stability.

[0020] 4) In the present invention, a support leg is connected to the bottom side of the tail beam, which is conducive to lowering the center of mass of the tail beam. The length of the support leg is greater than the distance between the left longitudinal beam of the frame and the right longitudinal beam of the frame, and the length of the support leg is less than the width of the subframe. A support beam is provided between the upper side of the support leg and the end of the subframe, so that the vehicle can effectively resist the risk of overturning when encountering excessive impact loads, providing a solid guarantee for the safety of equipment during transportation.

[0021] 5) In the present invention, part of the subframe crossbeams on both sides of the subframe are connected to the wheel chocks, which are arranged at two locations where the wheels are mounted. Compared with the traditional wheel chock installation method (where the frame structure is provided with a protrusion so that the wheel chocks are later installed at the protrusion), this method effectively saves a lot of installation space. During use, the storage and retrieval operations are more convenient and efficient, fully demonstrating the humanization and practicality of the design. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0023] Figure 1 Schematic diagram of a frame structure suitable for carrying equipment according to one or more embodiments of the present invention.

[0024] Figure 2 It is a front view of a frame structure suitable for carrying equipment according to one or more embodiments of the present invention.

[0025] Figure 3 It is a top view of a frame structure suitable for carrying equipment according to one or more embodiments of the present invention.

[0026] Figure 4 It is a side view of a frame structure suitable for carrying equipment according to one or more embodiments of the present invention.

[0027] Figure 5 It is an enlarged schematic diagram of a tail structure of a frame structure suitable for carrying equipment according to one or more embodiments of the present invention.

[0028] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0029] Among them: 1. Frame longitudinal beam, 2. Support leg, 3. Wheel chock, 4. Front beam, 5. First support part, 6. Second support part, 7. Third support part, 8. Frame cross beam, 9. Longitudinal beam, 10. Subframe longitudinal beam, 11. Subframe cross beam, 12. Mounting flange, 13. Support beam, 14. Subframe, 15. Connecting beam, 16. Mounting seat, 17. Tail beam, 18. First connecting hole, 19. Connecting seat, 20. Ring. DETAILED DESCRIPTION

[0030] It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those skilled in the art to which the present invention belongs.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise clearly indicated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "comprising" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations; As introduced in the background technology, the frame structure in the prior art has the problems of being inconvenient for engine installation or disassembly and insufficient space for installing the front leaf spring and steering rod. In order to solve the above technical problems, the present invention proposes a frame structure suitable for carrying equipment.

[0032] Example 1 In a typical embodiment of the present invention, referring to Figure 1 As shown, a frame structure suitable for carrying equipment includes a frame longitudinal beam 1, a front beam 4 connected to the front end of the frame longitudinal beam 1 and a tail beam 17 connected to the rear end of the frame longitudinal beam 1. The frame longitudinal beam 1 includes a left frame longitudinal beam and a right frame longitudinal beam arranged opposite to each other. From the front beam 4 to the tail beam 17, the distance between the left frame longitudinal beam and the right frame longitudinal beam is wider in the front and narrower in the rear. The distance between the left frame longitudinal beam and the right frame longitudinal beam is larger in the front section, and the distance between the middle section and the rear section is maintained within a set range. The height between the longitudinal sections of the left frame longitudinal beam and the right frame longitudinal beam and the ground is higher in the front and lower in the rear. The thickness of the front side is less than that of the left and right longitudinal beams, and the middle and rear sections. Frame beam 1 is designed to be wide in front and narrow in the rear, high in front and low in the rear. This wide-in-front-narrow-in-rear design provides space and support for the engine and its radiator. This not only provides ample installation space for the engine and its radiator, but also creates a stable support structure to ensure the reliability of the powertrain. Space is reserved below the higher front sections of the left and right longitudinal beams for the front leaf spring installation and steering tie rods, effectively avoiding the risk of interference between components and greatly improving the stability and reliability of the vehicle's layout performance. Among them, it needs to be explained that the left longitudinal beam and the right longitudinal beam of the frame are bent inward at their respective front sections to narrow the distance between the left longitudinal beam and the right longitudinal beam of the frame. In this way, the distance between the front sections of the left longitudinal beam and the right longitudinal beam of the frame is wider, which facilitates the installation or removal of the engine and its radiator tank through the wider space in the front section; moreover, the height change point of the longitudinal section of the left longitudinal beam and the right longitudinal beam of the frame (or the thickness change point of the left longitudinal beam and the right longitudinal beam of the frame) exceeds the bending point of the left longitudinal beam and the right longitudinal beam of the frame, that is, the bending point is in front and the thickness change point is in the back. The front leaf spring and the steering rod are installed below the front side of the thickness change point of the left longitudinal beam and the right longitudinal beam of the frame, so as to ensure the overall strength of the left longitudinal beam and the right longitudinal beam of the frame while ensuring reasonable space arrangement.

[0033] It is easy to understand that a plurality of frame cross beams 8 are arranged between the middle section and the tail section of the left longitudinal beam and the right longitudinal beam of the frame, and the frame cross beams 8 are welded to the left longitudinal beam and the right longitudinal beam of the frame respectively. A distance is set between adjacent frame cross beams 8, and the frame cross beams 8 on both sides of the bending part of the left longitudinal beam and the right longitudinal beam of the frame are bent to have recesses to enhance the overall structural strength while making space for the installation of structural parts. The sides of the plurality of frame cross beams 8 in the middle section and the tail section of the left longitudinal beam and the right longitudinal beam of the frame are respectively welded with oblique stiffening plates between the left longitudinal beam and the right longitudinal beam of the frame. The arrangement of the plurality of frame cross beams is like a strong link, which tightly connects the left longitudinal beam and the right longitudinal beam of the frame into a whole. It is tightly connected into a whole through high-strength welding technology, which significantly enhances the lateral rigidity and torsional resistance of the frame structure.

[0034] refer to Figure 1 and Figure 3 As shown, the front sections of the left longitudinal beam and the right longitudinal beam of the frame are respectively provided with a first support portion 5 and a second support portion 6, which are both higher than the left longitudinal beam and the right longitudinal beam of the frame. The first support portion 5 is arranged close to the front beam 4, and the first support portion 5 and the second support portion 6 are arranged at a distance. The width of the two first support portions 5 is greater than the width of the left longitudinal beam and the right longitudinal beam of the frame. The first support portion 5 can be specifically a rectangular structural member, the first support portion 5 is welded to the left longitudinal beam or the right longitudinal beam of the frame, the first support portion 5 is used to be connected to the front side of the cab, the second support portion 6 is placed on the inner side of the left longitudinal beam and the right longitudinal beam of the frame, the second support portion 6 is arranged on the inner side of the bending part of the front section of the left longitudinal beam and the right longitudinal beam of the frame, the second support portions 6 on both sides cooperate with each other to support the stabilizer bar of the suspension system, and the second support portion 6 can be specifically a support plate with an arc.

[0035] It should be noted that the left longitudinal beam of the frame or the right longitudinal beam of the frame is respectively provided with a first connecting hole 18 and a connecting seat 19, the first connecting hole 18 and the connecting seat 19 are arranged at a distance, there are multiple first connecting holes 18, the connecting seat 19 is arranged between the first connecting hole and the third support portion 7, the connecting seat is provided with a second connecting hole for connecting to the engine, the connecting seat 19 is placed on the inner side of the left longitudinal beam of the frame or the right longitudinal beam of the frame, the connecting seat 19 can be L-shaped, and the engine is supported by the first connecting hole 18 and the connecting seat 19.

[0036] In addition, a third support portion 7 is provided at the location where the thickness of the left longitudinal beam and the right longitudinal beam of the frame changes. The third support portion 7 extends outward from the outer side of the left longitudinal beam and the right longitudinal beam of the frame to support the rear end of the cab. The third support portion is connected to the left longitudinal beam and the right longitudinal beam of the frame respectively through a connecting rod, and the top of the third support portion 7 is a plane.

[0037] In this embodiment, the front beam 4 connects the left longitudinal beam of the frame and the right longitudinal beam of the frame, the tail beam 17 is a transverse beam, the tail beam 17 connects the left longitudinal beam of the frame and the right longitudinal beam of the frame, the ends of the sub-frame left longitudinal beam and the sub-frame right longitudinal beam in the sub-frame are placed on the upper side of the tail beam 17, and the parts of the sub-frame left longitudinal beam and the sub-frame right longitudinal beam in the sub-frame located on the upper side of the tail beam are connected by a sub-frame cross beam.

[0038] In this embodiment, reference Figure 2 As shown, the subframe 14 is fixed to the upper sides of the left longitudinal beam of the frame and the right longitudinal beam of the frame. The subframe 14 includes a subframe left longitudinal beam fixed to the upper side of the left longitudinal beam of the frame and a subframe right longitudinal beam fixed to the upper side of the right longitudinal beam of the frame. The subframe left longitudinal beam and the subframe right longitudinal beam constitute a subframe longitudinal beam 10. The frame left longitudinal beam and the subframe left longitudinal beam are connected by multiple mounting blocks and bolts. The frame right longitudinal beam and the subframe right longitudinal beam are connected by multiple mounting blocks and bolts. Multiple groups of subframe cross beams 11 are respectively provided on both sides of the two subframe longitudinal beams 1. Some adjacent subframe cross beams 11 are connected. The arrangement of the subframe cross beams 11 is arranged according to the components to be supported by the subframe. Specifically, the subframe 14 is further provided with a left longitudinal beam and a right longitudinal beam, which constitute a longitudinal beam 9. A plurality of subframe cross beams 11 are connected between the left longitudinal beam and the left longitudinal beam of the subframe, and a plurality of subframe cross beams 11 are connected between the right longitudinal beam and the right longitudinal beam of the subframe. Some of the subframe cross beams are connected by a connecting beam 15. The length of the connecting beam 15 is shorter than that of the left longitudinal beam. The connecting beam and the left longitudinal beam or the left longitudinal beam of the subframe are all set at a distance.

[0039] refer to Figure 1 and Figure 3 As shown, the subframe crossbeams on both sides of the subframe 14 are connected to the wheel chocks 3. The wheel chocks are placed on both sides above the tires. Four wheel chocks are provided on one side of the subframe, two of which are for the rear wheels. The two wheel chocks 3 in the middle are connected in a V-shape. Compared with the traditional wheel chock installation method (the frame structure is provided with a wheel chock bracket so that the wheel chock can be installed at the wheel chock bracket at a later stage), the wheel chocks effectively save a lot of installation space. The setting of the wheel chocks 3 breaks through the limitation of the installation space and the storage and retrieval operation becomes more convenient and efficient, which greatly improves the convenience and practicality of the vehicle during use. In some examples, a wheel chock is further provided at the third supporting portion, which is a wheel chock for the front wheel, and some of the wheel chocks (except the two wheel chocks connected in a V-shape) are connected to the vehicle frame.

[0040] The left longitudinal beam and the right longitudinal beam of the subframe 14 are respectively connected to the tail beam. A recess is provided on the side of the subframe close to the tail beam to support the mounting flange 12. The mounting flange 12 is connected to the equipment. A mounting seat 16 is provided in the middle section of the subframe, and related equipment is installed through the mounting seat 16. The mounting seat is in a U-shaped shape, and one side of the mounting seat is protruding. The mounting seat 16 is installed through two adjacent subframe cross beams.

[0041] In addition, a support leg 2 is connected to the bottom side of the tail beam 17 to lower the center of mass of the tail beam 17. The support leg 2 is arranged on the outside of the left longitudinal beam of the frame and the right longitudinal beam of the frame. The length of the support leg 2 is greater than the distance between the left longitudinal beam of the frame and the right longitudinal beam of the frame, and the length of the support leg 2 is less than the width of the subframe 14. Figure 4 As shown, a support beam 13 is provided between the upper side of the support leg and the end of the subframe. The support beam 13 is provided obliquely, and one end of the support beam 13 on one side is fixedly connected to the left longitudinal beam of the frame and the left longitudinal beam of the subframe, and one end of the support beam 13 on the other side is fixedly connected to the right longitudinal beam of the frame and the right longitudinal beam of the subframe.

[0042] refer to Figure 5 As shown, a circular ring 20 is provided on both sides of the support leg 2, and a hydraulic cylinder can be provided through the circular ring 20 to support the entire frame structure.

[0043] The frame structure provided in this embodiment realizes efficient use of space and has a strong load-bearing capacity, which can fully ensure that vehicles with specific equipment can perform excellent performance. Whether in routine transportation tasks or in complex and changeable special load-bearing environments, it shows excellent adaptability and reliability. The various parts are reasonably arranged, the space is fully utilized, and the load-bearing capacity is strong, which can ensure the good performance of the transportation vehicle.

[0044] Example 2 This embodiment discloses a vehicle, which adopts the frame structure suitable for carrying equipment described in the first embodiment.

[0045] Example 3 This embodiment also provides a method for installing a frame structure suitable for carrying equipment, including the following contents: Manufacturing the left and right longitudinal beams of the frame longitudinal beam 1, wherein the distance between the left and right longitudinal beams is wider at the front and narrower at the rear, and the heights of the left and right longitudinal beams from the ground are higher at the front and lower at the rear; Manufacture the frame crossbeam 8 and the subframe 14. The subframe includes two subframe longitudinal beams 10 and two longitudinal beams 9. Multiple subframe crossbeams 11 are arranged between the subframe longitudinal beams and the longitudinal beams. Some of the subframe crossbeams are connected by connecting beams 15. The left longitudinal beam of the frame and the right longitudinal beam of the frame are connected by a plurality of frame cross beams 8; A front beam 4 is provided at the front end of the left longitudinal beam of the frame and the right longitudinal beam of the frame, and a tail beam 17 is provided at the rear end; A subframe 14 is installed on the upper side of the left longitudinal beam of the frame and the right longitudinal beam of the frame. The subframe 14 is spaced apart from the thickness change position of the left longitudinal beam of the frame and the right longitudinal beam of the frame.

[0046] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A frame structure suitable for carrying equipment, characterized in that: The vehicle body is provided with a plurality of longitudinal beams, and the left longitudinal beam and the right longitudinal beam are connected to each other by a plurality of cross beams. The distance between the left longitudinal beam and the right longitudinal beam from the front beam to the tail beam is wider in the front and narrower in the rear. The distance between the left longitudinal beam and the right longitudinal beam is larger in the front section to install the suspension system. The distance between the middle section and the rear section is maintained within a set range to support the engine through the middle section and support the equipment through the rear section. The height between the longitudinal sections of the left longitudinal beam and the right longitudinal beam and the ground from the front beam to the tail beam is higher in the front and lower in the rear to facilitate the installation of front leaf springs and steering rods at the higher front sections of the left longitudinal beam and the right longitudinal beam.

2. A frame structure suitable for carrying equipment according to claim 1, characterized in that: The left longitudinal beam and the right longitudinal beam of the frame are bent inward at their respective front sections, so that the cross section of the frame becomes narrower from wide to form a variable cross-section structure that is wide at the front and narrow at the rear; In the direction from the front beam to the tail beam, the height change position of the longitudinal section of the left longitudinal beam of the frame and the right longitudinal beam of the frame exceeds the bending position of the left longitudinal beam of the frame and the right longitudinal beam of the frame.

3. A frame structure suitable for carrying equipment according to claim 2, characterized in that: The upper sides of the left longitudinal beam of the frame and the right longitudinal beam of the frame support the sub-frame, and the sub-frame is set at a distance from the thickness change point of the left longitudinal beam of the frame and the right longitudinal beam of the frame. The sub-frame includes a left longitudinal beam of the sub-frame fixed to the upper side of the left longitudinal beam of the frame and a right longitudinal beam of the sub-frame fixed to the upper side of the right longitudinal beam of the frame. Multiple groups of sub-frame cross beams are respectively connected to both sides of the two sub-frame longitudinal beams, and some adjacent sub-frame cross beams are connected.

4. A frame structure suitable for carrying equipment according to claim 3, characterized in that: The subframe crossbeams on both sides of the subframe are connected to the wheel chocks, and the two wheel chocks in the middle are connected in a V shape; The sub-frame left longitudinal beam and the sub-frame right longitudinal beam in the sub-frame are respectively connected to the tail beam. A recess is provided on one side of the sub-frame close to the tail beam to support a mounting flange, and the mounting flange is connected to the equipment.

5. The frame structure suitable for carrying equipment according to claim 3, characterized in that: A support leg is connected to the bottom side of the tail beam to lower the center of mass of the tail beam, the length of the support leg is greater than the distance between the left longitudinal beam of the frame and the right longitudinal beam of the frame, and the length of the support leg is less than the width of the subframe; A support beam is arranged between the upper side surface of the support leg and the end portion of the auxiliary frame, and the support beam is arranged obliquely.

6. The frame structure suitable for carrying equipment according to claim 3, characterized in that: The tail beam is a transverse beam, which connects the left longitudinal beam of the frame and the right longitudinal beam of the frame. The ends of the left longitudinal beam and the right longitudinal beam of the subframe are placed on the upper side of the tail beam.

7. The frame structure suitable for carrying equipment according to claim 1, characterized in that: The front sections of the left longitudinal beam and the right longitudinal beam of the frame are both provided with a first support portion and a second support portion, and the first support portion and the second support portion are both provided higher than the left longitudinal beam and the right longitudinal beam of the frame. The first support portion is provided close to the front beam, and a distance is set between the first support portion and the second support portion, and a distance is set between the second support portion and the third support portion.

8. The frame structure suitable for carrying equipment according to claim 3, characterized in that: The subframe is further provided with a left longitudinal beam and a right longitudinal beam. A plurality of subframe cross beams are connected between the left longitudinal beam and the subframe left longitudinal beam, and a plurality of subframe cross beams are connected between the right longitudinal beam and the subframe right longitudinal beam. Some of the subframe cross beams are connected by connecting beams.

9. A vehicle, characterized in that: A frame structure suitable for carrying equipment according to any one of claims 1 to 8 is adopted.

10. The method for installing a frame structure suitable for carrying equipment according to claim 3, characterized in that: Includes the following: Manufacturing the left longitudinal beam and the right longitudinal beam of the frame, wherein the distance between the left longitudinal beam and the right longitudinal beam is wider at the front and narrower at the rear during the manufacturing process, and the height of the longitudinal sections of the left longitudinal beam and the right longitudinal beam from the ground is higher at the front and lower at the rear; fabrication of frame rails and subframes; The left longitudinal beam of the frame and the right longitudinal beam of the frame are connected by a plurality of frame cross beams; A front beam is provided at the front ends of the left longitudinal beam and the right longitudinal beam of the frame, and a tail beam is provided at the rear ends; A subframe is installed on the upper side of the left longitudinal beam and the right longitudinal beam of the frame, and a distance is set between the subframe and the height change position of the longitudinal section of the left longitudinal beam and the right longitudinal beam of the frame.

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