Lower cross beam of commercial vehicle

Abstract

A lower cross beam of a commercial vehicle belongs to the technical field of automobile parts and comprises a cross beam main body and cross beam supports, the cross beam supports are arranged at the two ends of the cross beam main body respectively, and the two cross beam supports are symmetrically arranged; an eccentric mounting hole is formed in the cross beam support, and the end part of the cross beam main body is inserted into the eccentric mounting hole, so that the cross beam main body is connected with the cross beam support; the two cross beam supports are connected with plate spring supports, the two plate spring supports are symmetrically arranged, and the plate spring supports are connected with the frame; a bracket mounting hole is formed in the cross beam main body, and the intercooler protection plate is fixed on the cross beam main body through the bracket mounting hole. The lower cross beam of the commercial vehicle is reasonable in design, simple in structure, small in occupied transverse space, capable of reducing manufacturing cost, beneficial to avoiding an oil pan and suitable for popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a lower cross beam of a commercial vehicle. Background Art

[0002] The chassis is an important part of the car, generally consisting of four parts: the transmission system, the driving system, the steering system and the braking system. The main functions of the chassis include supporting and installing the car engine and its components and assemblies, forming the overall shape of the car, bearing the power of the engine, and ensuring the normal driving of the car.

[0003] The driving system is mainly composed of the frame, axle, wheel and suspension. The frame supports and connects the various assemblies of the car, ensuring that they are in the correct relative position and bearing various loads inside and outside the car. The wheels support the entire weight of the car, slow down and absorb the vibration and impact during driving, and prevent damage to the car parts. The suspension is responsible for transmitting the torque between the wheel and the frame to ensure the stability and comfort of the car.

[0004] At present, in the field of commercial vehicles, especially heavy-duty commercial vehicles, the strength and torsional rigidity of the front overhang of the frame are required to be relatively high. In order to strengthen the strength of the front end of the frame and ensure the safety of the whole vehicle, it is usually achieved by adding a crossbeam (that is, a lower crossbeam). In the prior art, the crossbeam mainly adopts a tubular curved beam or a "J"-shaped crossbeam. In actual use, the above-mentioned crossbeam has the following shortcomings: 1. If the tubular curved beam needs to be installed with an intercooler protection plate, it is necessary to weld a mounting bracket on the main body of the curved beam, which has a complex structure, increases the manufacturing cost, and has low economic benefits; 2. The "J"-shaped crossbeam occupies too much lateral space, and the crossbeam is easy to interfere with the engine oil pan, which increases the difficulty of assembly. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the prior art such as complex structure and large space occupation, and to provide a lower cross beam for commercial vehicles, which has a reasonable design, a simple structure, and occupies less lateral space, which can not only reduce the manufacturing cost, but also help to avoid the oil pan, and is suitable for promotion.

[0006] The utility model is realized through the following technical scheme: a lower cross beam of a commercial vehicle, comprising a cross beam main body and a cross beam support, cross beam supports are respectively arranged at both ends of the cross beam main body, and the two cross beam supports are symmetrically arranged; an eccentric mounting hole is opened on the cross beam support, and the end of the cross beam main body is inserted into the eccentric mounting hole, thereby connected to the cross beam support; the two cross beam supports are both connected to leaf spring supports, the two leaf spring supports are symmetrically arranged, and the leaf spring supports are connected to the vehicle frame; a bracket mounting hole is opened on the cross beam main body, and the intercooler protection plate is fixed to the cross beam main body through the bracket mounting hole.

[0007] A further improvement of the utility model is that the crossbeam body is made of rectangular steel pipe.

[0008] A further improvement of the utility model is that the axis of the crossbeam body is located in front of the axis of the eccentric mounting hole, so that the crossbeam support can form an eccentric structure.

[0009] A further improvement of the utility model is that two bracket mounting holes are provided, and the two bracket mounting holes are symmetrically arranged on both sides of the center of the crossbeam body.

[0010] A further improvement of the utility model is that a connecting hole is opened on the top of the crossbeam support, a bolt hole corresponding to the connecting hole is opened at one end of the leaf spring support, and the crossbeam support and the leaf spring support are connected in a bolt connection manner through the connecting hole and the bolt hole.

[0011] A further improvement of the utility model is that the eccentric mounting hole is located at the bottom of the crossbeam support, and a welding hole communicating with the eccentric mounting hole is opened on the crossbeam support, and the crossbeam support is welded to the crossbeam body through the welding hole.

[0012] A further improvement of the utility model is that a weight-reducing hole is provided on the crossbeam support.

[0013] A further improvement of the utility model is that reinforcing ribs are arranged on the crossbeam support.

[0014] A further improvement of the utility model is that the crossbeam support is an overall inclined structure with the top inclined toward the outside.

[0015] A further improvement of the utility model is that the crossbeam support is integrally formed, and the edges and corners of the crossbeam support are rounded.

[0016] From the above technical scheme, it can be seen that the beneficial effects of the utility model are as follows: the main body of the crossbeam is directly made of rectangular steel pipe, which does not require bending treatment and has a simple structure. In addition, the longitudinal plane size of the rectangular crossbeam is large and can be used as the installation plane of other brackets. The crossbeam support adopts an eccentric structure design, which can move the main body of the crossbeam forward, increase the gap between the main body of the crossbeam and the engine oil pan, avoid interference, and greatly reduce the difficulty of assembly; and the crossbeam support is connected to the leaf spring support by bolts, and the crossbeam support does not occupy the installation holes on the frame, avoiding interference with the installation holes of the leaf spring support. It can be seen that the design of this crossbeam is reasonable, the structure is simple, and it occupies less lateral space, which not only reduces the manufacturing cost, but also avoids the oil pan, which is suitable for promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of a specific embodiment of the utility model.

[0019] Figure 2 It is a schematic diagram of the connection structure between the beam body and the mounting bracket in a specific embodiment of the utility model.

[0020] Figure 3 yes Figure 2 main view.

[0021] Figure 4 It is a structural schematic diagram of a mounting support according to a specific embodiment of the utility model.

[0022] Figure 5 It is a structural schematic diagram of a leaf spring support according to a specific embodiment of the utility model.

[0023] 1. Crossbeam body; 101. Bracket mounting hole; 2. Engine oil pan; 3. Crossbeam support; 301. Connection hole; 302. Welding hole; 303. Weight reduction hole; 304. Eccentric mounting hole; 305. Reinforcement rib; 4. Frame; 5. Leaf spring support; 501. Bolt hole; 502. Frame connection hole A; 503. Frame connection hole B; 504. Axle hole; 505. Adjustment hole. DETAILED DESCRIPTION

[0024] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be clearly and completely described below in combination with the drawings in the specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0025] Please refer to the attached Figure 1-5 , combined with a specific embodiment, it is described as follows: A commercial vehicle lower cross beam described in the utility model includes a cross beam body 1 and a cross beam support 3, the cross beam body 1 adopts a rectangular steel pipe, the cross beam support 3 is integrally formed, and the edges and corners of the cross beam support 3 are rounded.

[0026] Crossbeam supports 3 are respectively provided at both ends of the crossbeam body 1, and the two crossbeam supports 3 are symmetrically arranged; an eccentric mounting hole 304 is opened on the crossbeam support 3, that is, the axis of the crossbeam body 1 is located in front of the axis of the eccentric mounting hole 304, so that the crossbeam support 3 can form an eccentric structure; the end of the crossbeam body 1 is inserted into the eccentric mounting hole 304, so as to be connected to the crossbeam support 3; the two crossbeam supports 3 are both connected to a leaf spring support 5, the two leaf spring supports 5 are symmetrically arranged, and the leaf spring support 5 is connected to the frame 4.

[0027] Specifically, a connection hole 301 is formed at the top of the cross beam support 3, and a bolt hole 501 corresponding to the connection hole 301 is formed at one end of the leaf spring support 5, and the cross beam support 3 and the leaf spring support 5 are connected by bolts through the connection hole 301 and the bolt hole 501. Referring to the prior art, a frame connection hole A502 and a frame connection hole B503 for connecting to the frame 4 are formed at the top of the leaf spring support 5, and a leaf spring installation port and an axis hole 504 for connecting the leaf spring are formed at the bottom of the leaf spring support 5, as well as an adjustment hole 505 for tensioning.

[0028] Specifically, the eccentric mounting hole 304 is located at the bottom of the crossbeam support 3 , and a welding hole 302 communicating with the eccentric mounting hole 304 is provided on the crossbeam support 3 , and the crossbeam support 3 is welded to the crossbeam body 1 through the welding hole 302 .

[0029] The cross beam body 1 is provided with a bracket mounting hole 101, and the intercooler protection plate is fixed to the cross beam body 1 through the bracket mounting hole 101. Two bracket mounting holes 101 are provided, and the two bracket mounting holes 101 are symmetrically arranged on both sides of the center of the cross beam body 1.

[0030] The working principle of the utility model: the cross beam body 1 directly uses a rectangular steel pipe, which does not need to be bent, and has a simple structure. The longitudinal plane size of the rectangular cross beam is large, and it can be used as the installation plane of other brackets. The cross beam support 3 adopts an eccentric structure design, which can move the cross beam body 1 forward, increase the gap between the cross beam body 1 and the engine oil pan 2, avoid interference, and greatly reduce the difficulty of assembly; and the cross beam support 3 is connected to the leaf spring support 5 by bolts, and the cross beam support 3 does not occupy the installation hole position on the frame 4, avoiding interference with the installation hole position of the leaf spring support 5.

[0031] In one embodiment, a weight-reducing hole 303 is opened on the crossbeam support 3 , and the design of the weight-reducing hole 303 can further reduce the overall weight of the crossbeam support 3 .

[0032] In one of the embodiments, a reinforcing rib 305 is provided on the cross beam support 3 , and the design of the reinforcing rib 305 can further improve the overall strength of the cross beam support 3 .

[0033] In one of the embodiments, the cross beam support 3 is an overall inclined structure with the top inclined toward the outside. The inclined design makes the overall structure of the cross beam support 3 more reasonable and convenient for assembly.

[0034] The terms "upper", "lower", "outer side", "inner side", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish the relative relationship in position if they exist, and do not need to be qualitative. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0035] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lower cross beam for a commercial vehicle, comprising a cross beam body (1) and a cross beam support (3), It is characterized in that A crossbeam support (3) is provided at each end of the crossbeam body (1), and the two crossbeam supports (3) are symmetrically arranged; an eccentric mounting hole (304) is provided on the crossbeam support (3), and the end of the crossbeam body (1) is inserted into the eccentric mounting hole (304) to be connected to the crossbeam support (3); the two crossbeam supports (3) are both connected to a leaf spring support (5), the two leaf spring supports (5) are symmetrically arranged, and the leaf spring supports (5) are connected to the vehicle frame (4); a bracket mounting hole (101) is provided on the crossbeam body (1), and the intercooler protection plate is fixed to the crossbeam body (1) through the bracket mounting hole (101).

2. A lower cross beam for a commercial vehicle according to claim 1, It is characterized in that The crossbeam body (1) is made of a rectangular steel pipe.

3. A lower cross beam for a commercial vehicle according to claim 2, It is characterized in that The axis of the crossbeam body (1) is located in front of the axis of the eccentric mounting hole (304), so that the crossbeam support (3) can form an eccentric structure.

4. A lower cross beam for a commercial vehicle according to claim 3, It is characterized in that Two bracket mounting holes (101) are provided, and the two bracket mounting holes (101) are symmetrically arranged on both sides of the center of the crossbeam body (1).

5. A lower cross beam for a commercial vehicle according to claim 4, It is characterized in that A connecting hole (301) is provided at the top of the crossbeam support (3), a bolt hole (501) corresponding to the connecting hole (301) is provided at one end of the leaf spring support (5), and the crossbeam support (3) and the leaf spring support (5) are connected in a bolt connection manner via the connecting hole (301) and the bolt hole (501).

6. A lower cross beam for a commercial vehicle according to claim 5, It is characterized in that The eccentric mounting hole (304) is located at the bottom of the crossbeam support (3), and a welding hole (302) communicating with the eccentric mounting hole (304) is provided on the crossbeam support (3), and the crossbeam support (3) is welded to the crossbeam body (1) through the welding hole (302).

7. A lower cross beam for a commercial vehicle according to claim 6, It is characterized in that A weight-reducing hole (303) is provided on the crossbeam support (3).

8. A lower cross beam for a commercial vehicle according to claim 7, It is characterized in that A reinforcing rib (305) is provided on the crossbeam support (3).

9. A lower cross beam for a commercial vehicle according to claim 8, It is characterized in that The crossbeam support (3) is in an overall inclined structure with the top portion inclined toward the outside.

10. A lower cross beam for a commercial vehicle according to claim 9, It is characterized in that The crossbeam support (3) is integrally formed, and the corners of the crossbeam support (3) are rounded.

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