Stand column and frame

Abstract

The utility model provides a stand column and a car frame, the stand column is supported and maintained between a top frame and a bottom frame which form the car frame, the stand column comprises a column body which is arranged in an extending mode in the height direction of the car frame, and the bottom of the column body can be connected to the bottom frame; the top end of the column body is sunken downwards to form the opening part, so that a top longitudinal beam forming the top frame is embedded into the opening part. According to the stand column, the opening part which is sunken downwards is arranged at the top of the column body, and the top longitudinal beam forming the top frame is embedded into the opening part, so that the structural strength of the joint of the top longitudinal beam and the stand column is improved, the structural strength of a frame is improved, and the safety of a vehicle is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle bodies, and in particular to a column. The utility model also relates to a vehicle frame provided with the column. Background Art

[0002] With the popularity of family cars, consumers pay more and more attention to vehicle safety. As the main body of the vehicle, the body structure plays a vital role in vehicle safety. In the body structure, the frame is the foundation of the body. The frame bears the weight of the body accessories and passengers and cargo, and also bears the load vibration, impact and torque generated by the vehicle during movement. The frame has a certain structural strength to ensure that when the vehicle collides, the passenger space will not be deformed too much and cause occupant injuries. Therefore, the frame needs to have sufficient structural strength.

[0003] At present, the frames of vehicles mostly adopt the skeleton profile welding structure, which mainly includes the cross structure formed by the columns, cross beams and longitudinal beams. In the prior art, the top longitudinal beam of the top frame is usually connected to the column by the profile section welding method. However, when the top longitudinal beam and the column are connected in this way, the top longitudinal beam or the column is directly welded on the surface of another column or the top longitudinal beam. Since the circumference of the section of the column or the section of the top longitudinal beam is limited, the length of the weld at the connection between the two is short, and the weld is usually in the same plane, so the structural strength of the connection between the top longitudinal beam and the column is low. When the vehicle rolls over or collides head-on, when the top longitudinal beam of the top frame is subjected to the shear force in the left and right directions and the front and rear directions of the vehicle, the connection is easy to break along the welding surface, thereby causing the frame structure to be destroyed, and the passengers in the vehicle cannot be effectively protected. Therefore, the existing frame has the problem of poor structural strength, which is not conducive to improving the safety of the vehicle. Utility Model Content

[0004] In view of this, the utility model aims to provide a column, which can improve the structural strength of the connection between the top longitudinal beam and the column, so as to improve the structural strength of the frame, thereby facilitating the improvement of the safety of the vehicle.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A column is supported and maintained between a top frame and a bottom frame constituting a vehicle frame. The column comprises: a column body extending along the height direction of the vehicle frame, the bottom of the column body being connectable to the bottom frame; and a mouth portion recessed downward from the top end of the column body to receive the embedding of a top longitudinal beam constituting the top frame.

[0007] Furthermore, the bottom surface of the column is constructed as a plane so as to be welded against the bottom longitudinal beam constituting the bottom frame.

[0008] Compared with the prior art, the utility model has the following advantages:

[0009] The column described in the utility model has a downwardly recessed opening at the top of the column body, so that the top longitudinal beam constituting the top frame is embedded in the opening, so as to improve the structural strength of the connection between the top longitudinal beam and the column, thereby facilitating the improvement of the structural strength of the frame and further improving the safety of the vehicle.

[0010] The bottom surface of the column is welded against the bottom longitudinal beam of the bottom frame. By forming the bottom surface as a plane that fits the surface of the bottom longitudinal beam, it is convenient for welding and installation of the column, and can improve the connection strength between the column and the bottom frame, thereby improving the structural strength of the frame.

[0011] Another object of the present invention is to provide a vehicle frame to improve the overall structural strength of the frame, thereby facilitating the improvement of the vehicle's usability.

[0012] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0013] A vehicle frame comprises a top frame and a bottom frame, wherein the above-mentioned upright column is assembled between the top frame and the bottom frame.

[0014] Furthermore, the columns are distributed in pairs in the width direction of the frame; the top frame is provided with a top crossbeam extending along the width direction of the frame; the bottom frame is provided with a bottom crossbeam extending along the width direction of the frame; the top crossbeam, the bottom crossbeam and the paired columns are fixedly connected to form a closed annular support body.

[0015] Furthermore, the annular support body is provided as a plurality of the annular support bodies spaced apart along the length direction of the frame.

[0016] Further, in the horizontal direction, the top frame and / or the bottom frame is constructed as an integrally formed closed ring.

[0017] Furthermore, the longitudinal cross-sectional area of ​​the bottom longitudinal beam constituting the bottom frame is greater than the longitudinal cross-sectional area of ​​the top longitudinal beam constituting the top frame.

[0018] Furthermore, the longitudinal cross-section of the bottom longitudinal beam and the longitudinal cross-section of the top longitudinal beam are respectively constructed as quadrilaterals.

[0019] Furthermore, the longitudinal section of the bottom longitudinal beam and the longitudinal section of the top longitudinal beam are respectively constructed as parallelograms; the ratio between the height and the length of the longitudinal section of the top longitudinal beam is greater than the ratio between the height and the length of the longitudinal section of the bottom longitudinal beam.

[0020] Furthermore, a pair of cabin longitudinal beams are provided at the front end of the bottom frame and are spaced apart along the width direction of the frame; each of the cabin longitudinal beams is extended toward the front of the frame along the length direction of the frame.

[0021] The vehicle frame of the utility model is equipped with the above-mentioned upright columns between the top frame and the bottom frame to improve the structural strength of the vehicle frame, thereby facilitating the improvement of the use quality of the vehicle.

[0022] In addition, the columns are distributed in pairs in the width direction of the frame, and the top crossbeam of the top frame, the bottom crossbeam of the bottom frame and the paired columns form a closed annular support body. Through the arrangement of the annular support body, it can withstand torsion and the forces in the height and width directions of the frame, thereby having a good structural strength, and to a certain extent reducing the collapse of the passenger space, and improving the safety of the vehicle. At the same time, the annular support body is arranged to be distributed in multiple intervals along the length direction of the frame, further improving the torsional stiffness of the entire frame, thereby facilitating the improvement of the anti-rollover deformation performance of the vehicle.

[0023] In addition, the top frame and the bottom frame are constructed to form a closed ring in the horizontal direction, so that the top frame and the bottom frame can withstand the forces in the length and width directions of the frame to improve the structural strength of the frame. At the same time, the longitudinal cross-sectional area of ​​the bottom longitudinal beam is larger than the longitudinal cross-sectional area of ​​the top longitudinal beam, so as to increase the size of the bottom longitudinal beam used to bear most of the weight of the vehicle body, thereby improving the strength and stability of the frame. Moreover, the longitudinal cross-sections of the bottom longitudinal beam and the top longitudinal beam are respectively constructed as quadrilaterals, which can improve the structural strength of the longitudinal beam and help prevent the longitudinal beam from collapsing and deforming due to external forces, thereby ensuring the structural strength of the frame.

[0024] Furthermore, the longitudinal sections of the bottom longitudinal beam and the top longitudinal beam are constructed as parallelograms, so that each longitudinal beam can withstand forces in the length and width directions of the frame, and further improve the structural strength of each longitudinal beam. In addition, the ratio between the height and length of the longitudinal section of the top longitudinal beam is greater than the ratio between the height and length of the longitudinal section of the bottom longitudinal beam, so that the top longitudinal beam has better bending resistance in the height direction of the frame, which can prevent the top frame from invading the passenger space due to external forces when the vehicle rolls over due to an accident, thereby improving the structural strength of the frame and the safety of the vehicle. Finally, a pair of cabin longitudinal beams are provided at the front end of the bottom frame, which can disperse and transfer the external forces received by the collision to the bottom longitudinal beams when the vehicle has a head-on collision, thereby improving the safety of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0026] Figure 1 This is a schematic diagram of the structure of the column described in Embodiment 1 of the present utility model;

[0027] Figure 2 This is a schematic diagram of the overall structure of the frame described in the second embodiment of the utility model;

[0028] Figure 3 For the utility model Figure 2 A magnified view of the position shown in middle A;

[0029] Figure 4 For the utility model Figure 2 A magnified view of the position shown in B;

[0030] Figure 5 It is a side view of the frame described in the second embodiment of the utility model;

[0031] Figure 6 For the utility model Figure 5 A cross-sectional view at the position indicated by AA;

[0032] Description of reference numerals:

[0033] 1. Column; 2. Top frame; 3. Bottom frame; 4. A-pillar; 5. B-pillar; 6. C-pillar; 7. D-pillar; 8. Annular support body; 9. Cabin longitudinal beam;

[0034] 101, column; 102, mouth;

[0035] 201, top longitudinal beam; 202, top cross beam;

[0036] 301. Bottom longitudinal beam; 302. Bottom cross beam. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0038] In the description of the present invention, it should be noted that if there are terms such as "upper", "lower", "inner", "outer" and the like indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In addition, if there are terms such as "first" and "second", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0039] Taking the vehicle where the pillar and frame described in the utility model are located as an example, the directional words such as "up, down, left, right, front, and back" used in the embodiments are defined based on the up and down direction (also called the height direction, or the Z direction of the whole vehicle), the left and right direction (also called the width direction, or the Y direction of the whole vehicle), and the front and rear direction (also called the length direction, or the X direction of the whole vehicle) of the vehicle. "Inside and outside" are defined based on the contour of the corresponding parts. For example, "inside" and "outside" are defined based on the contour of the vehicle, and the side of the vehicle contour close to the middle of the vehicle is "inside", and the opposite is "outside".

[0040] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0041] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0042] Embodiment 1

[0043] This embodiment relates to a column 1 to improve the structural strength of the frame, such as Figure 1 , Figure 2 As shown, in terms of overall structure, the column 1 of this embodiment is supported and maintained between the top frame 2 and the bottom frame 3 constituting the vehicle frame as described below.

[0044] Among them, Figure 1 and Figure 3 As shown, the column 1 includes a column body 101, which is extended along the height direction of the frame, and the bottom of the column body 101 can be connected to the bottom frame 3. The column 1 also includes a mouth 102 provided on the column body 101, and the mouth 102 is recessed downward from the top of the column body 101 to receive the top longitudinal beam 201 constituting the top frame 2.

[0045] Thus, after the top longitudinal beam 201 is embedded in the mouth 102, the columns 101 on both sides of the mouth 102 are attached to the two sides of the top longitudinal beam 201. When the top longitudinal beam 201 is subjected to the shear force in the left and right directions of the vehicle, the columns 101 on both sides of the mouth 102 can support the top longitudinal beam 201, so as to prevent the top longitudinal beam 201 from being separated from the columns 101, thereby improving the connection strength between the top longitudinal beam 201 and the columns 101. Specifically, the columns 101 and the bottom frame 3 can be connected in a variety of ways, such as welding, screwing, riveting, etc. However, since the frame bears the weight of the vehicle body accessories and passengers and cargo, it also bears the load vibration, impact and torque generated by the vehicle during movement. In order to improve the structural strength of the connection between the columns 101 and the bottom frame 3 and ensure the strength requirements of the frame as a whole, it is preferred to adopt a welding connection method to weld the columns 101 to the bottom frame 3.

[0046] As described above, by providing a downwardly recessed opening 102 at the top of the column 101, the top longitudinal beam 201 is embedded in the opening 102 to improve the structural strength of the connection between the top longitudinal beam 201 and the column 1, thereby facilitating the improvement of the structural strength of the frame and further improving the safety of the vehicle.

[0047] Based on the above overall introduction, specifically, the joint between the column 101 and the top longitudinal beam 201 of this embodiment is connected by full welding with carbon dioxide gas shielded welding. Compared with the connection method of welding the end plates of the column 1 to the top longitudinal beam 201 in the prior art, the mouth 102 on the column 101 of this embodiment can increase the length of the weld between the column 1 and the top longitudinal beam 201, and the welds at the mouth 102 are not on the same plane. When the connection between the column 101 and the top longitudinal beam 201 is stressed, the welds at the connection will not break at the same time. In addition, the setting of the mouth 102 can prevent the top longitudinal beam 201 from detaching along the width direction of the frame to a certain extent. Part of the column 101 on both sides of the mouth 102 is welded on both sides of the top longitudinal beam 201, and has a longer weld, which can prevent the top longitudinal beam 201 from detaching along the length direction of the frame to a certain extent, thereby improving the structural strength of the frame by strengthening the strength of the connection between the column 101 and the top longitudinal beam 201. At the same time, when the frame is assembled, the top longitudinal beam 201 can be embedded in the mouth 102, so that the top frame 2 and the column 1 are plug-in combined, which can facilitate the assembly operation of the frame to a certain extent.

[0048] In order to improve the connection strength between the column 101 of the column 1 and the bottom frame 3, the bottom surface of the main body of this embodiment is constructed as a plane flush with the upper surface of the bottom longitudinal beam 301, and the plane can fit with the upper surface of the bottom longitudinal beam 301, so that the column 101 is welded against the bottom longitudinal beam 301. In this way, the connection strength between the column 101 and the bottom frame 3 is improved, and the structural strength of the frame is improved. In the specific implementation, the column 101 and the bottom frame 3 are welded by carbon dioxide gas shielded welding to ensure the strength of the welding point.

[0049] In summary, the pillar 1 of this embodiment, by setting a downwardly recessed mouth 102 at the top of the column body 101, the top longitudinal beam 201 is embedded in the mouth 102 and welded together, thereby improving the structural strength of the connection between the top longitudinal beam 201 and the pillar 1, thereby helping to improve the structural strength of the frame and the safety of the vehicle, and has good practicality.

[0050] Embodiment 2

[0051] This embodiment relates to a vehicle frame, the overall structure of which is as follows: Figure 2 As shown, the frame includes a top frame 2 and a bottom frame 3, and a column 1 as described in the first embodiment is installed between the top frame 2 and the bottom frame 3.

[0052] As described above, by arranging the upright column 1 described in the first embodiment between the top frame 2 and the bottom frame 3, the structural strength of the frame is improved, thereby facilitating the improvement of the use quality of the vehicle.

[0053] Based on the above overall introduction, specifically, Figure 2 As shown, in a specific implementation, the front portions of the two top longitudinal beams 201 of this embodiment each have a bent section to match the front portion of the vehicle, and the rear portions of the two bottom longitudinal beams 301 also have a bent section to match the bottom frame 3 with the vehicle chassis and vehicle parts.

[0054] In order to further improve the structural strength of the vehicle frame, the columns 1 of this embodiment are distributed in pairs in the width direction of the vehicle frame. At the same time, the columns 1 between the top frame 2 and the bottom frame 3 respectively constitute the A column 4, B column 5, C column 6 and D column 7 of the vehicle. On the top frame 2, there is a top crossbeam 202 extending along the width direction of the vehicle frame, and on the bottom frame 3, there is a bottom crossbeam 302 extending along the width direction of the vehicle frame. The top crossbeam 202, the bottom crossbeam 302 and the paired columns 1 are fixedly connected to form a closed annular support body 8.

[0055] It is understandable that the annular support body 8 connects the two top longitudinal beams 201 and the two bottom longitudinal beams 301, ensuring the stability between the longitudinal beams, thereby improving the anti-torsion performance of the frame. When the frame is subjected to external force, the annular support body 8 can disperse the external force in the vehicle width and height direction to the top cross beam 202 and the column 101 of the column 1, preventing the frame from collapsing due to external force and invading the passenger space, thereby improving the structural strength of the frame.

[0056] In specific implementation, Figure 4 As shown, part of the top cross beam 202 is welded to part of the column 101 on one side of the mouth 102 of the column 1, so that part of the top cross beam 202 is directly connected to the column 1, which improves the integrity of the annular support body 8 and improves the structural strength of the annular support body 8. At the same time, in order to make the frame as a whole fit the external shape of the vehicle and the shape structure in the car, the annular support body 8 of this embodiment can form a certain angle with the bottom frame 3 and the top frame 2. Specifically, the annular support body 8 where the A-pillar 4 is located can be tilted toward the front of the vehicle to fit the shape structure of the cab and the cabin, and the annular support body 8 where the D-pillar 7 is located can be tilted toward the front of the vehicle so that the rear of the vehicle forms a smooth transition shape. The tilt angle of the above annular support body 8 can be determined according to the shape needs of the vehicle. The two annular support bodies 8 where the B-pillar 5 and the C-pillar 6 are located can be preferably arranged perpendicular to the top frame 2 and the bottom frame 3 to improve the structural strength of the frame and prevent the top frame 2 from collapsing toward the bottom frame 3 and invading the passenger space.

[0057] In order to further improve the strength and pit torsion performance of the frame, the annular support body 8 of the present embodiment is arranged to be a plurality of annular support bodies 8 spaced apart along the length direction of the frame, so that a plurality of annular support bodies 8 are connected between each longitudinal beam, thereby further improving the structural strength of the frame and improving the torsional stiffness of the frame as a whole, thereby facilitating improving the vehicle's anti-rollover deformation performance.

[0058] In order to further improve the structural strength of the frame, the top frame 2 and the bottom frame 3 of this embodiment are constructed as an integrally formed closed ring in the horizontal direction, and the closed ring is formed by two longitudinal beams and two cross beams arranged at the front and rear ends of the longitudinal beams. When the frame is subjected to external force impact, the top cross beam 202 or the bottom cross beam 302 bears the external force in the length direction of the frame and transmits it to the top longitudinal beam 201 or the bottom longitudinal beam 301, or the top cross beam 202 or the bottom cross beam 302 bears the external force in the width direction of the frame and transmits it to the top cross beam 202 or the bottom cross beam 302. At the same time, the top frame 2 and the bottom frame 3 are constructed as a closed ring, which can also improve the anti-torsion performance of the frame as a whole to a certain extent, thereby improving the structural strength of the frame as a whole. At the same time, the two closed rings formed by the two bottom longitudinal beams 301 and the bottom cross beams 302 at the front and rear ends of the frame are both integrally formed structures, thereby further improving the structural strength of the top frame and the bottom frame.

[0059] Since the bottom frame 3 supports the pillars 1 and the top frame 2, and also supports other vehicle body component structures, in order to improve the structural strength of the bottom frame 3 and the overall stability of the frame, the longitudinal cross-sectional area of ​​the bottom longitudinal beam 301 constituting the bottom frame 3 of this embodiment is greater than the longitudinal cross-sectional area of ​​the top longitudinal beam 201 constituting the top frame 2, thereby increasing the overall size of the bottom longitudinal beam 301, so that the bottom longitudinal beam 301 has a greater bearing capacity and better structural strength and stability, so as to effectively protect the various components in the bottom frame 3, such as the battery pack of the vehicle.

[0060] In order to improve the structural strength of the top longitudinal beam 201 and the bottom longitudinal beam 301, as shown in FIG. Figure 5 , Figure 6 As shown, the longitudinal sections of the bottom longitudinal beam 301 and the top longitudinal beam 201 of this embodiment are respectively constructed as quadrilaterals, which is beneficial to prevent the longitudinal beams from collapsing and deforming due to external forces, improve the structural strength of each longitudinal beam, and thus ensure the structural strength of the vehicle body. Specifically, the longitudinal sections of the bottom longitudinal beam 301 and the top longitudinal beam 201 of this embodiment are respectively constructed as parallelograms, so that when each longitudinal beam is subjected to force, the two opposite sides of each longitudinal beam support the other two opposite sides of the longitudinal beam, thereby improving the bending resistance of each longitudinal beam, and then effectively bearing the external forces in the length and width directions of the frame.

[0061] In order to prevent the vehicle frame, especially the top frame 2, from being subjected to external force and collapsing into the passenger space when the vehicle rolls over in an accident, causing the passengers in the vehicle to be injured, the ratio between the height and length of the longitudinal section of the top longitudinal beam 201 of this embodiment is greater than the ratio between the height and length of the longitudinal section of the bottom longitudinal beam 301. This makes the top longitudinal beam 201 have better bending resistance in the height direction of the frame, and can prevent the top longitudinal beam 201 from bending and invading the passenger space when an accident occurs, thereby improving the structural strength of the frame and the safety of the vehicle.

[0062] In the specific implementation, the top longitudinal beam 201 and the top cross beam 202, as well as the bottom longitudinal beam 301 and the bottom cross beam 302 are all made of 610L steel plate through hydraulic forming or inflation forming process, and the thickness of the steel plate is 2mm, which has good structural strength. In addition, the height of the longitudinal section of the top longitudinal beam 201 and the top cross beam 202 is 100mm, and the width is 60mm, which has a suitable size and a ratio of height to width to ensure that the structural strength meets the use requirements and has good anti-bending performance. At the same time, the height of the longitudinal section of the bottom longitudinal beam 301 and the bottom cross beam 302 is 118mm, and the width is 126mm. By increasing the cross-sectional area size, the stability of the bottom frame 3 supporting the column 1 and the top frame 2 is ensured, and the overall structural strength of the frame is improved.

[0063] Since the top frame 2 and the bottom frame 3 of the vehicle frame mainly enclose and protect the passenger space, in order to improve the structural strength and impact resistance of the vehicle cabin part when the vehicle is in a frontal collision, the front end of the bottom frame 3 of this embodiment, that is, the end facing the vehicle body, is provided with a pair of cabin longitudinal beams 9 arranged at intervals along the width direction of the frame, and each cabin longitudinal beam 9 is extended to the front of the frame along the length direction of the frame. When the vehicle suffers a frontal collision, the cabin longitudinal beam 9 can first protect the cabin, prevent the cabin from collapsing to a certain extent, and avoid the components in the cabin from invading the passenger space. At the same time, the cabin longitudinal beam 9 can disperse the external force it receives to the bottom frame 3, effectively improving the overall strength of the frame, thereby improving the safety of the vehicle.

[0064] In summary, the frame of this embodiment improves the structural strength of the frame by arranging the column 1 described in the first embodiment between the top frame 2 and the bottom frame 3. At the same time, through the combination of the annular support body 8, the top frame 21 and the bottom frame 3, the structural strength and torsional resistance of the frame are improved as a whole, thereby effectively improving the safety performance of the vehicle and facilitating the improvement of the quality of vehicle use.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A column (1) supported and held between a top frame (2) and a bottom frame (3) constituting a vehicle frame, characterized in that: The column (1) comprises: A column (101) is extended along the height direction of the frame, and the bottom of the column (101) can be connected to the bottom frame (3); The mouth (102) is formed by the top of the column (101) being recessed downwards to receive the top longitudinal beam (201) constituting the top frame (2).

2. The column (1) according to claim 1, characterized in that: The bottom surface of the column (101) is constructed as a plane so as to be welded against the bottom longitudinal beam (301) constituting the bottom frame (3).

3. A vehicle frame, comprising a top frame (2) and a bottom frame (3), characterized in that: The column (1) according to claim 1 or 2 is mounted between the top frame (2) and the bottom frame (3).

4. The frame according to claim 3, characterized in that: The uprights (1) are distributed in pairs in the width direction of the frame; A top crossbeam (202) extending along the width direction of the frame is provided on the top frame (2); a bottom crossbeam (302) extending along the width direction of the frame is provided on the bottom frame (3); The top crossbeam (202), the bottom crossbeam (302) and the paired uprights (1) are fixedly connected to form a closed annular support body (8).

5. The frame according to claim 4, characterized in that: The annular support body (8) is arranged in a plurality and spaced apart from each other along the length direction of the frame.

6. The frame according to claim 3, characterized in that: In the horizontal direction, the top frame (2) and / or the bottom frame (3) are constructed as an integrally formed closed ring.

7. The frame according to claim 6, characterized in that: The longitudinal cross-sectional area of ​​the bottom longitudinal beam (301) constituting the bottom frame (3) is greater than the longitudinal cross-sectional area of ​​the top longitudinal beam (201) constituting the top frame (2).

8. The frame according to claim 7, characterized in that: The longitudinal cross-section of the bottom longitudinal beam (301) and the longitudinal cross-section of the top longitudinal beam (201) are respectively constructed as quadrilaterals.

9. The frame according to claim 8, characterized in that: The longitudinal section of the bottom longitudinal beam (301) and the longitudinal section of the top longitudinal beam (201) are respectively constructed as parallelograms; the ratio between the height and length of the longitudinal section of the top longitudinal beam (201) is greater than the ratio between the height and length of the longitudinal section of the bottom longitudinal beam (301).

10. The frame according to any one of claims 3 to 9, characterized in that: A pair of cabin longitudinal beams (9) are provided at the front end of the bottom frame (3) and are spaced apart along the width direction of the frame; each cabin longitudinal beam (9) is extended toward the front of the frame along the length direction of the frame.

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