Reinforced switching type light truck low-entrance frame structure

Abstract

The utility model discloses a reinforced transfer type light truck low entrance frame structure which comprises a front section and a rear section, the rear section comprises two rear longitudinal beams, the front section comprises front longitudinal beams connected with the rear longitudinal beams respectively, transfer structures are arranged between the front longitudinal beams and the corresponding rear longitudinal beams respectively, and the transfer structures are connected with the front longitudinal beams respectively. The switching structure comprises a connecting block outer plate fixedly connected to the outer side face of the corresponding rear longitudinal beam, a cylindrical reinforcing body arranged in the front-back direction is fixedly connected to the bottom face of the rear longitudinal beam, and the outer side face of the cylindrical reinforcing body is fixedly connected with the connecting block outer plate. And the rear end of the front longitudinal beam extends into the cylindrical reinforcing body and is fixedly connected with the cylindrical reinforcing body. The connection strength of the front section and the rear section is high, low-entrance arrangement can be achieved on a large-weight light truck, and the working intensity of a driver can be relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of truck frames, in particular to a reinforced transfer-type light truck low-entry frame structure. Background Art

[0002] Light trucks, or light trucks, usually refer to trucks with a total mass between 1.8 and 6 tons. They have a strong cargo capacity and are widely used in life, especially in the field of urban distribution and cold chain transportation. The frame is the key structure of a light truck that carries the entire vehicle. Traditional light truck frames often use a straight-through longitudinal beam frame structure for easy layout. This straight-through longitudinal beam structure causes the cab to be raised to a higher position along with the upper surface of the frame, and two to three steps are required to enter the cab, which increases the driver's workload to a certain extent.

[0003] Mini trucks, or mini trucks, generally have a gross mass of less than 1.8 tons. Mini trucks usually have a low cab entrance, allowing one-step entry into the cab. However, they use small wheels and low longitudinal beam section height to achieve a one-step entry into the cab. And because of their small load capacity and relatively low frame strength, their frame structure is not suitable for low-entry settings for light trucks.

[0004] Although there is a frame structure that achieves a low entry setting by reducing the height of the front section of the frame, this frame structure is mainly used on small-weight light trucks and even micro trucks, and has not yet been used in large-weight light trucks. After studying this, the inventor found that the frame structure that achieves a low entry by reducing the height of the front section, the front section for installing the cab and the rear section for installing the load-bearing are mostly formed by stamping and bending the longitudinal beam. The bending and torsion resistance of this transition structure is generally low, so it can only be adapted for use with small-weight light trucks and micro trucks, and cannot meet the transition strength requirements of large-weight light trucks. For this reason, the inventor further improved the transition structure in order to achieve a low entry setting on large-weight light trucks. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a reinforced transfer type light truck low entry frame structure with high front and rear section transfer strength, which is conducive to realizing low entry setting on a heavy-weight light truck and is conducive to reducing the work intensity of the driver.

[0006] In order to solve the above technical problems, the technical solution of the utility model is: a reinforced transition-type light truck low-entry frame structure, including a front section and a rear section, the rear section includes two rear longitudinal beams, the front section includes a front longitudinal beam respectively connected to each of the rear longitudinal beams, and a transition structure is respectively provided between the front longitudinal beam and the corresponding rear longitudinal beam, the transition structure includes a connecting block outer plate fixedly connected to the outer side surface of the corresponding rear longitudinal beam, a cylindrical reinforcement body arranged in the front and rear directions is fixedly connected to the bottom surface of the rear longitudinal beam, the outer side surface of the cylindrical reinforcement body is fixedly connected to the connecting block outer plate, and the rear end of the front longitudinal beam extends into the cylindrical reinforcement body and is fixedly connected to the cylindrical reinforcement body.

[0007] As a preferred technical solution, the cylindrical reinforcement body and the connecting block outer plate extend forward to correspond to the front end of the rear longitudinal beam, and an oblique reinforcement plate is fixedly welded between the connecting block outer plate and the inner side surface of the cylindrical reinforcement body.

[0008] As a preferred technical solution, the cylindrical reinforcement body includes a connecting reinforcement upper plate fixedly connected to the bottom surface of the rear longitudinal beam, a connecting reinforcement outer plate extending downward is fixedly arranged at the outer edge of the connecting reinforcement upper plate, a connecting reinforcement inner plate extending downward is fixedly arranged at the inner edge of the connecting reinforcement upper plate, and a connecting reinforcement lower plate is fixedly arranged between the bottom edges of the connecting reinforcement outer plate and the connecting reinforcement inner plate.

[0009] As a preferred technical solution, a plurality of cross beams are fixedly connected between the two rear longitudinal beams, and the rear end of the cylindrical reinforcement body is fixedly connected to the frontmost cross beam.

[0010] As a preferred technical solution, the rear longitudinal beam includes a main rear trough beam extending along the entire front-to-rear direction, a reinforcing angle steel is abutted against the lower side wall and the bottom of the trough of the main rear trough beam, lateral connecting bolts are provided between the outer plate of the connecting block and the bottom of the trough of the main rear trough beam, and bottom connecting bolts are connected through the top wall of the cylindrical reinforcement body and the lower side wall of the main rear trough beam and the reinforcing angle steel.

[0011] Due to the adoption of the above technical solution, a reinforced transition-type light truck low-entry frame structure includes a front section and a rear section, the rear section includes two rear longitudinal beams, the front section includes a front longitudinal beam connected to each of the rear longitudinal beams, a transition structure is provided between the front longitudinal beam and the corresponding rear longitudinal beam, the transition structure includes a connecting block outer plate fixedly connected to the outer side surface of the corresponding rear longitudinal beam, a cylindrical reinforcement body arranged along the front-to-back direction is fixedly connected to the bottom surface of the rear longitudinal beam, the outer side surface of the cylindrical reinforcement body is fixedly connected to the connecting block outer plate, and the rear end of the front longitudinal beam extends into the cylindrical reinforcement body and is fixedly connected to the cylindrical reinforcement body. The utility model uses the cylindrical reinforcement body as the main transition part, which is fixedly arranged on the bottom surface of the rear longitudinal beam, so that a height difference is naturally formed between the front longitudinal beam fixedly connected thereto and the rear longitudinal beam, which is conducive to realizing a low-entry setting on a heavy-weight light truck and is conducive to reducing the work intensity of the driver. The front longitudinal beam extends into the cylindrical reinforcement body to form an overlap with the rear longitudinal beam, and the cylindrical reinforcement body utilizes its own high-strength cylindrical structure and the auxiliary connection of the connecting block outer plate to form a multi-faceted connection between the front longitudinal beam and the rear longitudinal beam. The entire transition structure has a relatively high torsional and bending strength as a whole without significantly increasing the structural weight, and the front and rear section transition strength is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The following drawings are only intended to illustrate and explain the present invention, and do not limit the scope of the present invention.

[0013] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the utility model;

[0014] Figure 2 It is a three-dimensional structural schematic diagram of one of the transfer structures in the embodiment of the utility model;

[0015] Figure 3 yes Figure 2 A schematic diagram of the structure from another perspective;

[0016] Figure 4 It is a three-dimensional structural schematic diagram of the switching structure of the embodiment of the utility model;

[0017] Figure 5 yes Figure 4 A schematic diagram of the structure from another perspective;

[0018] Figure 6 yes Figure 4 A structural diagram from another perspective;

[0019] Figure 7 It is a schematic structural diagram of the front longitudinal beam and the transition structure after being assembled in the embodiment of the utility model.

[0020] In the figure: 1-rear section; 11-rear longitudinal beam; 12-main rear channel beam; 13-reinforced angle steel; 2-front section; 21-front longitudinal beam; 3-cross beam; 4-transition structure; 41-connecting block outer plate; 42-cylindrical reinforcement body; 43-connecting and reinforcing upper plate; 44-connecting and reinforcing outer plate; 45-connecting and reinforcing inner plate; 46-connecting and reinforcing lower plate; 47-oblique reinforcement plate; 5-lateral connecting bolts; 6-bottom connecting bolts. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and examples. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Needless to say, those skilled in the art will recognize that the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and descriptions are illustrative in nature and are not intended to limit the scope of protection of the claims.

[0022] like Figures 1 to 7 As shown together, a reinforced transfer-type light truck low-entry frame structure includes a front section 2 and a rear section 1, wherein the rear section 1 includes two rear longitudinal beams 11, and the front section 2 includes a front longitudinal beam 21 respectively connected to each of the rear longitudinal beams 11, and a transfer structure 4 is respectively provided between the front longitudinal beam 21 and the corresponding rear longitudinal beam 11. A plurality of cross beams 3 are fixedly connected between the two rear longitudinal beams 11, and a plurality of cross beams 3 are fixedly connected between the two front longitudinal beams 21. The above structure is a well-known technology in the art and will not be described in detail here.

[0023] The transition structure 4 includes a connection block outer plate 41 fixedly connected to the outer side surface of the corresponding rear longitudinal beam 11. The fixed connection here can be achieved by bolt connection, welding, or a combination of bolt connection and welding, which is not limited here. The rear longitudinal beam 11 described in this embodiment includes a main rear channel beam 12 extending along the entire front-to-back direction. Of course, conventionally, the notches of the main rear channel beams 12 in the two rear longitudinal beams 11 are relatively arranged, and the groove bottom of the main rear channel beam 12 constitutes the outer side wall of the rear longitudinal beam 11. Among them, the description of the inside and outside involved in this embodiment is based on the position of the proximal side of the longitudinal beams on both sides as the inside, and the position of the far side of the longitudinal beams on both sides as the outside, so as to explain the structural principle more clearly. This embodiment is a schematic diagram of a lateral connection bolt 5 provided between the connection block outer plate 41 and the groove bottom of the main rear channel beam 12 for fixed connection.

[0024] A cylindrical reinforcement body 42 arranged in the front-to-back direction is fixedly connected to the bottom surface of the rear longitudinal beam 11. For the rear longitudinal beam 11 of this embodiment including the main rear channel beam 12, the cylindrical reinforcement body 42 is fixedly connected to the lower side wall of the rear longitudinal beam 11. Preferably, a reinforcing angle steel 13 is abutted between the lower side wall and the bottom of the channel of the main rear channel beam 12, and a bottom connecting bolt 6 is penetrated and connected between the top wall of the cylindrical reinforcement body 42 and the lower side wall of the main rear channel beam 12 and the reinforcing angle steel 13. Thus, the transition structure 4 is transferred with the rear longitudinal beam 11 having a relatively strong strength as the base, which is conducive to ensuring the overall torsional and bending resistance after the transfer. The structure of the rear longitudinal beam 11 is mainly assembled by common profiles, and the processing and assembly are relatively simple. When the number of the bottom connecting bolts 6 between the cylindrical reinforcement body 42 and the rear longitudinal beam 11 is small, the two can be welded after the bolt connection to ensure the reliability of the transfer connection.

[0025] The outer side surface of the cylindrical reinforcement body 42 is fixedly connected to the outer plate 41 of the connecting block, so that the cylindrical reinforcement body 42 and the outer plate 41 of the connecting block form an integral body, and the integral body forms a two-surface connection with the rear longitudinal beam 11. The transition structure 4 can form an approximately equal strength connection by virtue of the connection of the two surfaces, thereby achieving a better anti-bending and anti-torsion transmission capability. The two-surface connection also makes the connection between the transition structure 4 and the rear longitudinal beam 11 relatively simple and convenient to assemble.

[0026] The rear end of the front longitudinal beam 21 extends into the cylindrical reinforcement body 42 and is fixedly connected to the cylindrical reinforcement body 42, thereby conveniently forming a multi-point connection between the front longitudinal beam 21 and the cylindrical reinforcement body 42, achieving at least equal strength connection, and achieving a good anti-bending and anti-torsion transmission effect between the two. The cylindrical structure of the cylindrical reinforcement body 42 makes it convenient to form an overlap between the front longitudinal beam 21 and the rear longitudinal beam 11, further improving the anti-bending and anti-torsion capabilities between the front and rear longitudinal beams.

[0027] The cylindrical reinforcement body 42 includes a connection reinforcement upper plate 43 fixedly connected to the bottom surface of the rear longitudinal beam 11, a connection reinforcement outer plate 44 extending downward is fixedly provided at the outer edge of the connection reinforcement upper plate 43, a connection reinforcement inner plate 45 extending downward is fixedly provided at the inner edge of the connection reinforcement upper plate 43, and a connection reinforcement lower plate 46 is fixedly provided between the bottom edges of the connection reinforcement outer plate 44 and the connection reinforcement inner plate 45, and the cylindrical reinforcement body 42 is formed by fixing these four plates. Whether the adjacent plates are connected by bolts, welding, or integrated sheet metal can be selected and used according to actual needs, and is not limited here.

[0028] Based on the good bending and torsion resistance of the cylindrical structure itself, the cylindrical reinforcement body 42 is conveniently set to a higher height, and the front end is set to a constricted form that is compatible with the cross-section of the front longitudinal beam 21. Then, the bottom surface of the front longitudinal beam 21 is welded to the connecting reinforcement lower plate 46, and the side and top surfaces of the front longitudinal beam 21 are respectively welded to the connecting reinforcement inner plate 45, the connecting reinforcement outer plate 44 and the front edges of the connecting reinforcement upper plate 43, so as to achieve the purpose of further reducing the height of the front longitudinal beam 21 while ensuring equal strength connection.

[0029] In this embodiment, the cylindrical reinforcement body 42 and the connecting block outer plate 41 extend forward to correspond to the front end of the rear longitudinal beam 11, and an oblique reinforcement plate 47 is fixedly welded between the connecting block outer plate 41 and the inner side surface of the cylindrical reinforcement body 42. Through this arrangement, on the one hand, the length of the cylindrical reinforcement body 42 is extended, so that it forms a longer connection length with the front longitudinal beam 21, further improving the bending and torsion resistance, and on the other hand, it also avoids the shrinkage setting at the front end of the cylindrical reinforcement body 42 from affecting its connection with the front longitudinal beam 21, further ensuring the reliable connection between the transition structure 4 and the rear longitudinal beam 11 under the low inlet setting.

[0030] Preferably, the rear end of the cylindrical reinforcement body 42 is fixedly connected to the frontmost cross beam 3, and the fixed connection can be achieved by at least one of bolt connection and welding, which is not limited here. Through this arrangement, a higher strength connection is formed between the front longitudinal beam 21 and the cylindrical reinforcement body 42, and the rear longitudinal beam 11 and the frontmost cross beam 3. During actual assembly, the front longitudinal beam 21 can be assembled with the transition structure 4 first, and then the transition structure 4 can be assembled with the rear longitudinal beam 11 and the frontmost cross beam 3, which is simple to assemble.

[0031] In this embodiment, the cylindrical reinforcement body 42 is used as the main transition part, which is fixedly arranged on the bottom surface of the rear longitudinal beam 11, so that a height difference is naturally formed between the front longitudinal beam 21 fixedly connected thereto and the rear longitudinal beam 11, which is conducive to realizing a low entry setting on a heavy-weight light truck and helping to reduce the driver's work intensity. The front longitudinal beam 21 extends into the cylindrical reinforcement body 42 to form an overlap with the rear longitudinal beam 11, and the cylindrical reinforcement body 42 uses its own high-strength cylindrical structure and the auxiliary connection of the connecting block outer plate 41 to form a multi-faceted connection between the front longitudinal beam 21 and the rear longitudinal beam 11. The entire transition structure 4 has a relatively high torsional and bending strength without significantly increasing the structural weight, and the front and rear sections have high transition strength. The transition structure 4 is mainly formed by welding sheet metal stamping parts, which is simple to manufacture and easy to assemble.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A reinforced transfer-type light truck low-entry frame structure, comprising a front section and a rear section, wherein the rear section comprises two rear longitudinal beams, the front section comprises a front longitudinal beam respectively connected to each of the rear longitudinal beams, and a transfer structure is respectively provided between the front longitudinal beam and the corresponding rear longitudinal beam, characterized in that: The transition structure includes a connecting block outer plate fixedly connected to the outer side surface of the corresponding rear longitudinal beam, a cylindrical reinforcement body arranged in the front-to-back direction is fixedly connected to the bottom surface of the rear longitudinal beam, the outer side surface of the cylindrical reinforcement body is fixedly connected to the connecting block outer plate, and the rear end of the front longitudinal beam extends into the cylindrical reinforcement body and is fixedly connected to the cylindrical reinforcement body.

2. The reinforced transfer-type light truck low-entry frame structure as claimed in claim 1, characterized in that: The cylindrical reinforcement body and the connecting block outer plate extend forward to correspond to the front end of the rear longitudinal beam, and an oblique reinforcement plate is fixedly welded between the connecting block outer plate and the inner side surface of the cylindrical reinforcement body.

3. The reinforced transfer-type light truck low-entry frame structure as claimed in claim 1, characterized in that: The cylindrical reinforcement body includes a connecting reinforcement upper plate fixedly connected to the bottom surface of the rear longitudinal beam, a connecting reinforcement outer plate extending downward is fixedly arranged at the outer edge of the connecting reinforcement upper plate, a connecting reinforcement inner plate extending downward is fixedly arranged at the inner edge of the connecting reinforcement upper plate, and a connecting reinforcement lower plate is fixedly arranged between the bottom edges of the connecting reinforcement outer plate and the connecting reinforcement inner plate.

4. The reinforced transfer-type light truck low-entry frame structure as claimed in claim 1, characterized in that: A plurality of cross beams are fixedly connected between the two rear longitudinal beams, and the rear end of the cylindrical reinforcement body is fixedly connected to the frontmost cross beam.

5. The reinforced transfer-type light truck low-entry frame structure as claimed in claim 1, characterized in that: The rear longitudinal beam includes a main rear trough beam extending along the entire front-to-rear direction, a reinforcing angle steel is abutted between the lower side wall and the bottom of the trough of the main rear trough beam, lateral connecting bolts are provided between the outer plate of the connecting block and the bottom of the trough of the main rear trough beam, and bottom connecting bolts are penetrated and connected between the top wall of the cylindrical reinforcement body and the lower side wall of the main rear trough beam and the reinforcing angle steel.

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