A front lower protection device for a commercial vehicle

Abstract

The utility model relates to the technical fields of protective device especially a front lower protective device of commercial vehicle, it includes anticollision crossbeam assembly, left branch and right branch, left branch and right branch are perpendicular to install at the both ends of anticollision crossbeam assembly respectively, left branch one side and right branch one side are all installed on the frame, the frame is relatively parallel to set up, the frame end part sets up the front bumper, left branch other side and right branch other side install left upper car pedal and right upper car pedal respectively, anticollision crossbeam assembly includes crossbeam, connecting arm, reinforcing L board and reinforcing inclined strut, this front lower protective device of commercial vehicle, the front bumper, left and right upper car pedal are integrated on the front lower protective device, solve the problem of insufficient installation space in front part, improve the overall anti -impact strength through the crossbeam structure optimization, reduce the weight of front lower protective device, improve the overall economic benefit.

Description

Technical Field

[0001] This utility model relates to the technical field of protective devices, and in particular to a front underrun protection device for commercial vehicles. Background Technology

[0002] With the continuous progress of society, commercial vehicles have been widely used in various industries. Commercial vehicles have many components, among which the front underrun protection device is a crucial one. The front underrun protection device for commercial vehicles refers to a specialized front underrun protection device or a vehicle body, frame component, or other component that provides front underrun protection based on its shape and characteristics. Currently, commercial vehicles have numerous front frame components, including the front underrun protection device, front bumper, and running boards, resulting in very limited space for front-end installation. The front underrun protection device is a protective device that not only requires compliance with regulations in terms of shape and dimensions but also meets corresponding strength requirements. Currently, the crossbeams of commercial vehicle front underrun protection devices are all rectangular square tube structures. These lack additional structures in the impact direction for blocking, resulting in poor impact resistance and frequent deformation after impact. Furthermore, the current rectangular square tubes have relatively thick walls, leading to a heavy overall weight for the front underrun protection device crossbeam, increasing the overall vehicle weight and reducing market competitiveness. Summary of the Invention

[0003] The technical problem to be solved by this utility model is: in order to solve the problems existing in the background art, a front lower protection device for commercial vehicles is provided, which integrates the front bumper and left and right upper steps into the front lower protection device, solves the problem of insufficient front installation space, and improves the overall impact resistance by optimizing the crossbeam structure, while reducing the weight of the front lower protection device and improving the overall economic efficiency.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a front lower protection device for commercial vehicles, including a crossbeam assembly, a left support arm, and a right support arm. The left and right support arms are respectively vertically installed at both ends of the crossbeam assembly. One side of the left support arm and one side of the right support arm are both installed on the vehicle frame, and the vehicle frame is arranged relatively parallel to each other. A front bumper is installed at the end of the vehicle frame. The left upper step and the right upper step are respectively installed on the other side of the left and right support arms. The crossbeam assembly includes a crossbeam, a connecting arm, a reinforcing L-plate, and a reinforcing diagonal brace. The crossbeam has a hollow tubular structure, and corrugated grooves are provided on the opposite side walls of the crossbeam. The corrugated grooves are arranged along the length of the crossbeam. The connecting arm is fixedly installed on the crossbeam by the reinforcing L-plate, and the connection between the reinforcing L-plate and the connecting arm is fixed by the reinforcing diagonal brace.

[0005] Further specifying the above technical solution, the left and right support arms are symmetrically arranged on the anti-collision beam assembly; each of the left and right support arms includes a support arm body, a reinforcing bracket, a front circular hole, an upper circular hole on the ventral surface, a middle circular hole on the ventral surface, and a lower circular hole on the ventral surface; the reinforcing bracket is vertically arranged at the middle of one side of the left support arm and the middle of one side of the right support arm; the front circular hole is fixed to the front bumper by passing through a fastening bolt; the upper circular hole on the ventral surface is fixedly connected to the vehicle frame by passing through a fastening bolt; the middle circular hole on the ventral surface is connected and fixed to the left upper step and the right upper step respectively by passing through bolts; the lower circular hole on the ventral surface is fixedly connected to the connecting arm by passing through a bolt.

[0006] Furthermore, in the above technical solution, the left upper pedal and the right upper pedal are respectively connected to the fixing sleeve by a connecting rod, and the fixing sleeve is fixedly connected by a fastening bolt passing through a circular hole in the middle of the abdomen.

[0007] Furthermore, in the above technical solution, both ends of the crossbeam are provided with caps.

[0008] Furthermore, in the above technical solution, the reinforcing L-plate is provided with one or more sets of waist-shaped connecting holes along the length direction.

[0009] Further specifying, in the above technical solution, the connecting arm is a tubular structure with an open upper end, and a plurality of first connecting holes are correspondingly opened on the side wall of the connecting arm. When the first connecting holes are concentric with the circular holes on the lower part of the abdomen, they are connected and fixed by bolts.

[0010] Furthermore, in the above technical solution, a plurality of second connecting holes are provided on the end face of the frame, and the second connecting holes are concentric with the circular holes on the upper part of the belly surface and are connected and fixed by bolts.

[0011] The beneficial effects of this utility model are as follows: The front lower protection device for commercial vehicles proposed in this utility model integrates the front bumper and left and right upper steps into the front lower protection device, which solves the problem of insufficient front installation space. Through the optimization of the crossbeam structure, the overall impact resistance is improved while the weight of the front lower protection device is reduced, thereby improving the overall economic efficiency. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 yes Figure 1 Schematic diagram showing the connection between the central anti-collision beam assembly, left support arm, right support arm and vehicle frame;

[0015] Figure 3 yes Figure 1 Schematic diagram showing the connection between the central anti-collision beam assembly, the left support arm, and the right support arm;

[0016] Figure 4 yes Figure 1 Schematic diagram of the left support arm Figure 1 ;

[0017] Figure 5 yes Figure 1 Schematic diagram of the left support arm Figure 2 ;

[0018] Figure 6 yes Figure 1 Schematic diagram of the right support arm Figure 1 ;

[0019] Figure 7 yes Figure 1 Schematic diagram of the right support arm Figure 2 ;

[0020] Figure 8 yes Figure 1 Structural diagram of the central anti-collision beam assembly;

[0021] Figure 9 yes Figure 8 Schematic diagram of the cross-sectional structure of the central beam.

[0022] The labels in the attached diagram are as follows: 1. Anti-collision crossbeam assembly, 2. Left support arm, 3. Right support arm, 4. Frame, 5. Left upper step, 6. Right upper step, 7. Crossbeam, 8. Connecting arm, 9. Reinforcing L-plate, 10. Reinforcing diagonal brace, 11. Wave groove, 12. Support arm body, 13. Reinforcing bracket, 14. Front circular hole, 15. Upper circular hole on the ventral surface, 16. Middle circular hole on the ventral surface, 17. Lower circular hole on the ventral surface, 18. Connecting rod, 19. Fixing sleeve, 20. Cover, 21. Waist-shaped connecting hole, 22. First connecting hole, 23. Second connecting hole, 24. Front bumper. Detailed Implementation

[0023] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] In this application, the traditional crossbeam adopts a rectangular square tube structure with a wall thickness of 6mm. This application improves the side wall of the crossbeam 7 by adopting a wave groove 11 structure, reducing its wall thickness to 2.5mm, thereby reducing the overall weight and making it a lighter design. At the same time, the impact resistance of this structure is also greatly improved.

[0025] Traditionally, the front bumper, left upper running board, and right upper running board are all mounted separately on the vehicle frame, which greatly limits the installation space at the front of the frame. This application integrates the front bumper, left upper running board, and right upper running board into a single front underrun protection device, thus largely solving the problem of insufficient installation space in traditional systems.

[0026] See Figure 1-9 The diagram shows a front underrun protection device for a commercial vehicle, including a crossbeam assembly 1, a left support arm 2, and a right support arm 3. The left support arm 2 and the right support arm 3 are respectively vertically installed at both ends of the crossbeam assembly 1. One side of the left support arm 2 and one side of the right support arm 3 are both installed on the frame 4, which is arranged relatively parallel to each other. A front bumper 24 is installed at the end of the frame 4. The left upper vehicle step 5 and the right upper vehicle step 6 are respectively installed on the other side of the left support arm 2 and the other side of the right support arm 3. The crossbeam assembly 1 includes a crossbeam 7, a connecting arm 8, a reinforcing L-plate 9, and a reinforcing diagonal brace 10. The crossbeam 7 has a hollow tubular structure. Corrugated grooves 11 are provided on the opposite side walls of the crossbeam 7. The corrugated grooves 11 are arranged along the length of the crossbeam 7. The connecting arm 8 is fixedly installed on the crossbeam 7 by the reinforcing L-plate 9. The connection between the reinforcing L-plate 9 and the connecting arm 8 is fixed by the reinforcing diagonal brace 10.

[0027] The left support arm 2 and the right support arm 3 are symmetrically arranged on the anti-collision beam assembly 1. Each of the left support arm 2 and the right support arm 3 includes a support arm body 12, a reinforcing bracket 13, a front circular hole 14, an upper circular hole 15 on the ventral surface, a middle circular hole 16 on the ventral surface, and a lower circular hole 17 on the ventral surface. The reinforcing bracket 13 is vertically arranged on the middle of one side of the left support arm 2 and the middle of one side of the right support arm 3. The front circular hole 17 is fixed to the front bumper 24 by a fastening bolt. The upper circular hole 15 on the ventral surface is fixedly connected to the frame 4 by a fastening bolt. The middle circular hole 16 on the ventral surface is fixedly connected to the left upper step 5 and the right upper step 6 by a fastening bolt. The lower circular hole 17 on the ventral surface is fixedly connected to the connecting arm 8 by a bolt. The left upper step 5 and the right upper step 6 are respectively connected to the fixing sleeve 19 by a connecting rod 18. The fixing sleeve 19 is fixedly connected by a fastening bolt through the middle circular hole 16 on the ventral surface. Both ends of the crossbeam 7 are equipped with caps 20. One or more sets of waist-shaped connecting holes 21 are provided along the length of the reinforcing L-plate 9. The connecting arm 8 is a tubular structure with an open top. Several first connecting holes 22 are correspondingly opened on the side wall of the connecting arm 8. When the first connecting holes 22 are concentric with the circular holes 17 on the lower part of the belly surface, they are connected and fixed by bolts. Several second connecting holes 23 are opened on the end face of the frame 4. When the second connecting holes 23 are concentric with the circular holes 15 on the upper part of the belly surface, they are connected and fixed by bolts.

[0028] The operating principle of the front underrun protection device for this commercial vehicle is as follows:

[0029] Firstly, the wave grooves 11 on both sides of the crossbeam 7 enhance the impact resistance and deformation resistance after impact. Secondly, the wall thickness is reduced from 6mm to 2.5mm due to the use of high-strength hot-formed steel plates and integral roll forming, resulting in thinner walls and lighter weight. This significantly improves impact resistance while reducing weight. Furthermore, the front lower protection device of this application solves the problem of insufficient front installation space by integrating the front bumper 24, the left upper foot pedal 5, and the right upper foot pedal 6 into the front lower protection device.

[0030] This application offers the following advantages over traditional protective devices: By optimizing the structure of the crossbeam in the anti-collision beam assembly, the cross-section is designed as a wave-shaped structure. Furthermore, due to the use of high-strength hot-formed steel plates in a single roll forming process, the crossbeam wall thickness is thinner and the weight is lighter. This solves problems such as poor impact resistance and easy deformation after impact, while also reducing the overall weight of the front lower guard device.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A front lower protection device of a commercial vehicle, characterized in that: It includes a crossbeam assembly, a left support arm, and a right support arm. The left and right support arms are respectively vertically installed at both ends of the crossbeam assembly. One side of the left support arm and one side of the right support arm are both installed on the vehicle frame. The vehicle frame is arranged relatively parallel to each other, and a front bumper is installed at the end of the vehicle frame. The left upper step and the right upper step are respectively installed on the other side of the left support arm and the other side of the right support arm. The anti-collision crossbeam assembly includes a crossbeam, a connecting arm, a reinforcing L-plate, and reinforcing diagonal braces. The crossbeam has a hollow tubular structure, and corrugated grooves are provided on the opposite side walls of the crossbeam. The corrugated grooves are provided along the length of the crossbeam. The connecting arm is fixedly installed on the crossbeam by the reinforcing L-plate, and the connection between the reinforcing L-plate and the connecting arm is fixed by the reinforcing diagonal braces.

2. A front underguard for a commercial vehicle as claimed in claim 1, characterized in that: The left and right support arms are symmetrically arranged on the anti-collision beam assembly; each of the left and right support arms includes a support arm body, a reinforcing bracket, a front circular hole, an upper circular hole on the ventral surface, a middle circular hole on the ventral surface, and a lower circular hole on the ventral surface; the reinforcing bracket is vertically arranged at the middle of one side of the left support arm and the middle of one side of the right support arm; the front circular hole is fixed to the front bumper by passing through a fastening bolt; the upper circular hole on the ventral surface is fixedly connected to the vehicle frame by passing through a fastening bolt; the middle circular hole on the ventral surface is fixedly connected to the left upper step and the right upper step by passing through bolts respectively; the lower circular hole on the ventral surface is fixedly connected to the connecting arm by passing through a bolt.

3. A front underguard for a commercial vehicle as claimed in claim 1, characterized in that: The left upper pedal and the right upper pedal are respectively connected to the fixing sleeve by a connecting rod, and the fixing sleeve is fixedly connected by a fastening bolt through a circular hole in the middle of the abdomen.

4. A front underguard for a commercial vehicle as defined in claim 1, characterized in that: Both ends of the crossbeam are equipped with caps.

5. A front underguard for a commercial vehicle as defined in claim 1, characterized in that: The reinforcing L-plate is provided with one or more sets of waist-shaped connecting holes along its length.

6. A front underguard for a commercial vehicle as defined in claim 2, characterized in that: The connecting arm is a tubular structure with an open top. Several first connecting holes are correspondingly opened on the side wall of the connecting arm. When the first connecting holes are concentric with the circular holes on the lower part of the abdomen, they are connected and fixed by bolts.

7. A front underguard for a commercial vehicle as defined in claim 2, characterized by: Several second connecting holes are provided on the end face of the frame. When the second connecting holes are concentric with the circular holes on the upper part of the belly surface, they are connected and fixed by bolts.

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