Novel commercial vehicle front lower protection assembly

Abstract

The utility model relates to the technical field of automobiles, in particular to a novel commercial vehicle front lower protection assembly which comprises a front lower protection cross beam, a punching and welding combined support fixedly connected to the front lower protection cross beam and an oil pump support fixedly connected to the front lower protection cross beam. An arc-shaped positioning hole is formed in the end, connected with the front lower protective cross beam, of the step bracket support, the step bracket support is provided with a locking mechanism for preventing the step bracket support from rotating, and the end, away from the front lower protective cross beam, of the step bracket support is in threaded connection with a step bracket. The front lower protection assembly has the effect that the high maintenance cost caused by replacement of the front lower protection assembly due to damage of the step bracket is reduced.

Description

A new type of front underrun protection assembly for commercial vehicles Technical Field

[0001] This application relates to the field of automotive technology, and in particular to a novel front underrun protection assembly for commercial vehicles. Background Technology

[0002] The front underrun protection assembly is an important part of the vehicle bumper, usually made of steel. Located at the bottom of the bumper, it prevents the vehicle's mechanical components from being impacted by uneven road surfaces during driving. It also reduces the severity of injuries to passengers and pedestrians in the event of a collision, thus improving vehicle safety.

[0003] The front underrun protection assembly of commercial vehicles mainly consists of a protective beam assembly, a bracket assembly, and a step bracket assembly. Currently, the front underrun protection assembly of commercial vehicles is mainly made of welded parts to meet the safety performance requirements of the front underrun protection assembly of commercial vehicles.

[0004] Regarding the aforementioned technologies, the inventors believe that the following defects exist: In the front underrun protection assembly of commercial vehicles, the protective beam and the step bracket are connected by welding. When the step bracket is damaged, the entire front underrun protection assembly needs to be replaced, which is difficult and costly to repair. Summary of the Invention

[0005] To address the issue of high maintenance costs associated with front underrun protection assemblies, this application provides a novel front underrun protection assembly for commercial vehicles.

[0006] The novel front underrun protection assembly for commercial vehicles provided in this application adopts the following technical solution:

[0007] A novel front lower protection assembly for commercial vehicles includes a front lower protection crossbeam, a stamped and welded combined bracket fixed to the front lower protection crossbeam, and an oil pump bracket fixed to the front lower protection crossbeam. The assembly is characterized in that: both ends of the front lower protection crossbeam are threadedly connected to step bracket supports; one end of the step bracket support connected to the front lower protection crossbeam has an arc-shaped adjustment hole; the step bracket support is equipped with a locking mechanism to prevent rotation; and the end of the step bracket support away from the front lower protection crossbeam is threadedly connected to a step bracket.

[0008] By adopting the above technical solution, when the step bracket is damaged, the step bracket can be disassembled by turning the bolts at the connection between the step bracket and the step bracket support. Adjusting the position of the bolts at the connection between the step bracket support and the front lower protective beam in the arc-shaped adjustment hole can change the angle between the step bracket support and the front lower protective beam. The locking mechanism locks and fixes the bolts passing through the arc-shaped adjustment hole, preventing the bolts in the arc-shaped adjustment hole from moving, thus ensuring the stability of the connection between the step bracket support and the front lower protective beam. The bolt connection between the step bracket and the step bracket support avoids the need to replace the entire front lower protective assembly when the step is damaged, reducing maintenance costs and simplifying maintenance. At the same time, the arc-shaped adjustment hole can adjust the angle between the step bracket support and the front lower protective beam, meeting the requirements of installing different models of step brackets in the front lower protective assembly, increasing the adaptability of the front lower protective assembly.

[0009] Optionally, the locking mechanism is a limiting block that is threadedly connected to the step bracket support and located at both ends of the arc-shaped adjustment hole.

[0010] By adopting the above technical solution, when it is necessary to adjust the installation angle between the step bracket support and the step bracket, the bolts fixing the front lower protective beam and the step bracket support are moved along the arc-shaped adjustment hole. After the angle is adjusted appropriately, the bolts at the connection between the limiting block and the step bracket bracket are turned with a wrench to make the limiting block abut against the bolt passing through the arc-shaped adjustment hole, preventing the bolt in the arc-shaped adjustment hole from moving along the hole wall of the arc-shaped adjustment hole, and ensuring the stability of the connection between the step bracket support and the front lower protective beam.

[0011] Optionally, the step bracket support has multiple sets of adjustment holes at the end away from the front lower protective beam, and the end of the step bracket is provided with an adjustment bolt that is compatible with the adjustment holes, and the adjustment bolt is threaded with a nut.

[0012] By adopting the above technical solution, the position of the step bracket and the step bracket support is adjusted so that the adjusting bolt is aligned with one set of adjusting holes among multiple sets of adjusting holes. The step bracket is then fixed on the step bracket support by tightening the adjusting bolt and nut.

[0013] Optionally, two connecting plates are welded to the bends of the front lower protective beam, and the connecting plates are threadedly connected to the oil pump bracket.

[0014] By adopting the above technical solution, connecting plates are welded to both bends of the front lower protection beam, and oil pump brackets can be installed on both connecting plates. The installation position of the oil pump bracket can be selected according to whether the cab is on the right side or the left side of the vehicle, which increases the adaptability of the front lower protection assembly.

[0015] Optionally, a reinforcing tube is welded between the connecting plates, and the reinforcing tube forms a triangle with the bend of the protective beam.

[0016] By adopting the above technical solution, the reinforcing tube and the bend of the front lower protective beam form a triangle, making the structure of the bend of the front lower protective beam more stable. When the vehicle is hit from the side, the reinforcing tube increases the impact resistance of the bend of the front lower protective beam.

[0017] Optionally, the step bracket has threaded holes for fixing the step cover, and the step cover is fitted with fixing bolts that are compatible with the threaded holes.

[0018] By adopting the above technical solution, the fixing bolts on the step cover are aligned with the threaded holes, and the fixing bolts are turned to fix the step cover on the step bracket.

[0019] Optionally, a water tank mounting bracket is fixedly connected at the connection between the front lower protective beam and the stamped combined bracket, and a pipe bundle clamp bracket is fixedly connected at the bend of the front lower protective beam.

[0020] By adopting the above technical solutions, the water tank mounting bracket and pipe clamp bracket can increase the adaptability of the front lower protective crossbeam and meet the needs of different customers.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. When a vehicle is hit from the side, the step bracket can be removed from the step bracket support by turning the adjusting bolts on the step bracket and the step bracket support. The step bracket can then be repaired or replaced. This avoids the situation where the step bracket is damaged when the vehicle is hit from the side, which would require the replacement of the entire front underrun protection assembly, thus reducing the maintenance cost of the front underrun protection assembly.

[0023] 2. When replacing different types of step brackets, adjust the position of the bolts in the arc-shaped adjustment holes to change the angle between the step bracket support and the front lower protective beam. Twist the bolts connected to the limit block to make the limit block abut against the bolts in the arc-shaped adjustment holes, preventing the step bracket support and the front lower protective beam from rotating. Multiple sets of adjustment holes are provided on the step bracket support to adjust the installation length of the step bracket, increasing the adaptability of the front lower protective assembly.

[0024] 3. The connecting plates welded at the bends of the front lower protective beam allow for the installation of oil pump brackets on either the left or right side of the vehicle, depending on the cab location. The reinforcing pipe forms a triangle with the bend of the front lower protective beam, which improves the impact resistance of the bend. Attached Figure Description

[0025] Figure 1 is a schematic diagram of the overall structure of an embodiment of this application;

[0026] Figure 2 is a top view of an embodiment of this application;

[0027] Figure 3 is an enlarged schematic diagram of part B in Figure 2.

[0028] Reference numerals: 1. Front lower protective crossbeam; 11. Water tank mounting bracket; 12. Pipe bundle clamp bracket; 2. Stamped and welded combination bracket; 3. Oil pump bracket; 31. Connecting plate; 32. Reinforcing pipe; 4. Step bracket support; 41. Arc-shaped adjustment hole; 42. Limiting block; 43. Adjustment hole; 44. Adjusting bolt; 5. Step bracket; 51. Threaded hole. Detailed Implementation

[0029] The present application will be further described in detail below with reference to Figures 1-3.

[0030] This application discloses a novel front lower protection assembly for commercial vehicles. Referring to Figures 1-3, the novel front lower protection assembly for commercial vehicles includes a front lower protection beam 1, a stamped and welded combined bracket 2 welded to the front lower protection beam 1, and an oil pump bracket 3 fixed to the bend of the front lower protection beam 1. The front lower protection beam 1 has a rectangular cross section, and reinforcing grooves are provided on both sides of the front lower protection beam 1. Step bracket supports 4 are threaded to both ends of the front lower protection beam 1. The step bracket supports 4 have arc-shaped adjustment holes 41 for adjusting the angle between the step bracket supports 4 and the front lower protection beam 1. Bolts pass through the arc-shaped adjustment holes 41 to fix the step bracket supports 4 to the front lower protection beam 1. A locking mechanism for preventing the bolts in the arc-shaped adjustment holes 41 from moving is fixed to the step bracket supports 4. A step bracket 5 is threaded to the end of the step bracket supports 4 away from the front lower protection beam 1.

[0031] Currently, most step brackets 5 are integrally formed with the front lower protective beam 1. When the step bracket 5 is damaged, it is often necessary to replace the entire front lower protective assembly. This front lower protective assembly is connected to the step bracket support 4 by threads at the ends of the front lower protective beam 1, and then the step bracket 5 is installed on the step bracket support 4. When the step bracket 5 is damaged, the bolts at the connection between the step bracket support 4 and the step bracket 5 can be turned to remove the step bracket 5 from the front lower protective assembly for repair or replacement. The step bracket support 4 avoids the need to replace the entire front lower protective assembly when the step bracket 5 is damaged or deformed, thus reducing maintenance costs. The step bracket 5 is made of materials of DL590 grade or higher, such as ultra-high strength boron steel. The material is made of ultra-high-strength boron steel, which uses cold stamping technology instead of ordinary stamping and welding. The yield strength and tensile strength of ultra-high-strength boron steel are better than those of ordinary steel plates. The cold stamping process can also avoid the welding deformation of the step bracket 5 caused by ordinary stamping and welding, making the step bracket 5 less prone to damage. Since the bending degree of the connecting port of different models of step bracket 5 is different, when installing different models of step bracket 5 on step bracket support 4, the angle of step bracket support 4 and front lower protection beam 1 can be adjusted through arc-shaped adjustment hole 41, thereby adjusting the angle between step bracket 5 and front lower protection beam 1. Furthermore, step bracket 5 can be installed or not installed according to vehicle conditions, increasing the adaptability of the front lower protection assembly.

[0032] Referring to Figures 2 and 3, the locking mechanism includes an upper limit block 42 threadedly connected to the step bracket support 4; the side of the upper limit block 42 away from the arc-shaped adjustment hole 41 is welded to the end face of a bolt, which is an internal hex bolt, and the upper limit block 42 has a concave structure, the width of the groove of the concave upper limit block 42 is greater than the height of the screw movement in the arc-shaped adjustment hole 41.

[0033] When installing the step bracket 5, adjust the position of the screw in the arc-shaped adjustment hole 41 to adjust the angle between the step bracket support 4 and the front lower protective beam 1. Twist the hex bolts to make the concave limiting block 42 abut against the bolt end in the arc-shaped adjustment hole 41 to prevent the bolt in the arc-shaped adjustment hole 41 from moving, so that the step bracket support 4 is fixed on the front lower protective beam 1; thereby ensuring the stability of the structure of the step bracket support 4 and the front lower protective beam 1.

[0034] Referring to Figures 2 and 3, the step bracket support 4 has multiple sets of adjustment holes 43 at the end away from the front lower protective beam 1. The end of the step bracket 5 is provided with an adjustment bolt 44 that is compatible with the adjustment hole 43. The adjustment bolt 44 is threaded with a nut. The adjustment bolt 44 fixes the step bracket 5 on the step bracket support 4. The step bracket 5 is provided with a threaded hole 51 for fixing the step cover. The step cover is provided with a bolt that is threaded to the wall of the threaded hole 51.

[0035] When different types of step brackets 5 have different lengths, the installation length of the step bracket 5 can be adjusted by adjusting the position of the step bracket 5 and the step bracket support 4 so that the adjusting screw on the step bracket 5 is aligned with the adjusting hole 43 on the step bracket support 4. The threaded hole 51 is directly tapped on the step bracket 5 and the step cover is fixed to the step bracket 5 with bolts. Compared with welding nuts to the step bracket 5 to fix the step cover to the step bracket 5, the cost is lower and the weight of the step bracket 5 is lighter.

[0036] Referring to Figure 2, two connecting plates 31 are welded at the bend of the front lower protective beam 1. The connecting plates 31 are threaded to the oil pump bracket 3. A reinforcing pipe 32 is welded between the two connecting plates 31 at the same bend of the front lower protective beam 1. The reinforcing pipe 32 and the bend of the front lower protective beam 1 form a triangle.

[0037] When the vehicle is impacted from the side, the abrupt change in geometry at the bend of the front lower protective beam 1 causes the stress to be more concentrated at the bend. The reinforcing tube 32 forms a triangle with the bend of the front lower protective beam 1, making the structure at the bend of the front lower protective beam 1 more stable and enhancing the impact resistance of the front lower protective beam 1. A connecting plate 31 is provided at each bend of the front lower protective beam 1, and the position of the oil pump bracket 3 can be selected according to whether the cab is on the right or left side of the vehicle, which meets the requirements of different countries for the front lower protective assembly of the vehicle.

[0038] Referring to Figure 2, a water tank mounting bracket 11 is welded at the connection between the front lower protective beam 1 and the stamped combined bracket, and a pipe clamp bracket 12 is welded at the bend of the front lower protective beam 1, which increases the adaptability of the front lower protective assembly and meets the needs of different customers.

[0039] The implementation principle of a novel front underrun protection assembly for commercial vehicles in this application embodiment is as follows: When the step bracket 5 is damaged, the adjusting bolt 44 between the step bracket support 4 and the step bracket 5 can be twisted to remove the step bracket 5 from the front underrun protection assembly. Then, the step bracket 5 can be repaired or replaced, avoiding the need to replace the entire front underrun protection assembly due to damage to the step bracket 5, thus reducing maintenance costs. Changing the position of the bolt in the arc-shaped adjusting hole 41 and twisting the bolt connected to the limiting block 42 causes the limiting block 42 to press the bolt in the arc-shaped adjusting hole 41 against the limit block 42, preventing the bolt from moving and thus allowing the step bracket support 4 and the limit block 42 to be properly aligned. The front lower protective beam 1 is fixed. The position of the step bracket 5 installed on the step bracket support 4 can be adjusted by adjusting the adjustment hole 43 and adjusting bolt 44, thereby adjusting the installation length of the step bracket 5 to meet the needs of installing different models of pedal brackets on the front lower protective assembly. The front lower protective beam 1 is welded with connecting plates 31 at the bends. For the layout of the driver's cab of vehicles in different countries, the oil pump bracket 3 can be installed at the bend on one side of the front lower protective beam 1, increasing the adaptability of the front lower protective assembly. The reinforcing tube 32 welded to the connecting plate 31 forms a triangle with the bend of the front lower protective beam 1, which enhances the impact resistance of the bend of the front lower protective beam 1.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A novel front underrun protection assembly for commercial vehicles, comprising a front underrun protection crossbeam (1), a stamped and welded composite bracket (2) fixedly connected to the front underrun protection crossbeam (1), and an oil pump bracket (3) fixedly connected to the front underrun protection crossbeam (1), characterized in that: Both ends of the front lower protective beam (1) are threadedly connected to step bracket supports (4). An arc-shaped adjustment hole (41) is opened at one end of the step bracket support (4) connected to the front lower protective beam (1). The step bracket support (4) is provided with a locking mechanism to prevent the step bracket support (4) from rotating. The end of the step bracket support (4) away from the front lower protective beam (1) is threadedly connected to a step bracket (5).

2. A new front lower guard assembly for a commercial vehicle of claim 1, characterized by: The locking mechanism is a limiting block (42) that is threadedly connected to the step bracket support (4) and located at both ends of the arc-shaped adjustment hole (41).

3. The novel front underrun protection assembly for commercial vehicles according to claim 1, characterized in that: The step bracket support (4) has multiple sets of adjustment holes (43) at the end away from the front lower protective beam (1). The end of the step bracket (5) is provided with an adjustment bolt (44) that is compatible with the adjustment hole (43) and a nut is threaded on the adjustment bolt (44).

4. The novel front underrun protection assembly for commercial vehicles according to claim 1, characterized in that: Two connecting plates (31) are welded to the bends of the front lower protective beam (1), and the connecting plates (31) are threadedly connected to the oil pump bracket (3).

5. A new front lower guard assembly for a commercial vehicle of claim 4, characterized by: A reinforcing tube (32) is welded between the connecting plates (31), and the reinforcing tube (32) and the bending part of the protective beam form a triangle.

6. A new front lower guard assembly for a commercial vehicle of claim 1 characterized by: The step bracket (5) has a threaded hole (51) for fixing the step cover, and the step cover is fitted with a fixing bolt that is compatible with the threaded hole (51).

7. A novel front underrun protection assembly for commercial vehicles according to claim 1, characterized in that: A water tank mounting bracket (11) is fixedly connected at the connection between the front lower protective beam (1) and the stamped and welded combined bracket (2), and a pipeline clamp bracket (12) is fixedly connected at the bend of the front lower protective beam (1).

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