Height-adjustable front lower protection device for heavy-duty commercial vehicle
By designing an adjustable front lower protection device and using bolts to connect the bracket and the frame, the regulations and passability problems caused by existing non-adjustable devices are solved, and height adjustments are achieved to meet different vehicle states to ensure safety and passage.
Patent Information
- Application Number
- CN202421014646.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-05-11
AI Technical Summary
The existing heavy commercial vehicle front-bottom protection device is not adjustable, resulting in the inability to meet regulatory requirements and guarantee passability when the vehicle state changes, which may lead to more serious injury or passage problems.
A height adjustable device including a front lower protective beam, a connecting bracket, a frame and a front end accessories is designed. The position adjustment of the bracket is achieved through bolted connections, meeting the regulatory height requirements of the ground in different vehicle states.
The rapid height adjustment of the front lower protection device is realized, which is suitable for different vehicle needs, ensuring compliance with regulations and improving vehicle passability, and avoiding passing problems caused by height inconsistency.
Smart Images
Figure CN222157397U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile parts, in particular to a front lower protection device of a heavy commercial vehicle with adjustable height. Background Art
[0002] According to relevant national laws and regulations, a front underbody protection device needs to be installed in front of heavy commercial vehicles to prevent small vehicles or pedestrians from being drawn under the large vehicle in the event of a vehicle collision, thereby avoiding more serious injuries.
[0003] According to regulatory requirements, the maximum ground clearance of the lower edge of the front lower guard should not exceed a certain value. In the prior art, the front lower guard of heavy commercial vehicles is a non-adjustable structure, and the ground clearance of the lower edge of the front lower guard is fixed. Under standard conditions, the ground clearance of the lower edge of the front lower guard is in compliance with regulations. However, when the vehicle is adjusted due to tire specifications, suspension arc height, installation position, etc., the ground clearance of the lower edge of the front lower guard will also change. When the ground clearance of the lower edge of the front lower guard is too low, the approach angle of the vehicle will be reduced, affecting the vehicle's passability; and when the ground clearance of the lower edge of the front lower guard is too high, it will not meet national regulatory requirements and cannot be used on the road.
[0004] Therefore, it is urgent to design a height-adjustable front lower protection device for heavy commercial vehicles to solve the above problems. Utility Model Content
[0005] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a height-adjustable front lower protection device for heavy commercial vehicles.
[0006] To achieve the above objectives, the present disclosure adopts the following technical solutions:
[0007] According to one aspect of the present disclosure, a height-adjustable front lower protection device for a heavy-duty commercial vehicle is provided, comprising a front lower protection cross beam, a connecting bracket, a vehicle frame and a front end accessory, wherein two connecting brackets are symmetrically arranged on the front lower protection cross beam, and the connecting brackets are provided with oblong holes extending in the longitudinal direction, and the vehicle frame and the front end accessory are respectively provided with connecting holes, and the oblong hole is connected to the connecting hole on one of the vehicle frame and the front end accessory by bolts.
[0008] In an exemplary embodiment of the present disclosure, the oblong holes are symmetrically arranged at two ends of the upper portion of the connecting bracket, and the length of the oblong holes is 50-70 mm.
[0009] In an exemplary embodiment of the present disclosure, the cross section of the front lower protection beam is rectangular;
[0010] The height of the cross section is not less than 120 mm, the width of the cross section is not less than 70 mm, the corners of the cross section are rounded, and the radius of the rounded corners is greater than 3 mm.
[0011] In an exemplary embodiment of the present disclosure, at least one layer of reinforcing plate is disposed in the front lower protective cross beam, and blocking covers are respectively disposed at both ends of the front lower protective cross beam.
[0012] In an exemplary embodiment of the present disclosure, the front lower protection beam includes a straight tube and an arc tube.
[0013] The arc tubes are symmetrically arranged at two ends of the straight tube, the connecting brackets are arranged on the straight tubes, and the arc tubes are bent toward the rear end of the frame.
[0014] In an exemplary embodiment of the present disclosure, the front lower protection beam further includes a diagonal brace.
[0015] The diagonal brace is horizontally arranged on one side of the two connecting brackets away from each other, and the connecting bracket and the arc tube are connected through the diagonal brace;
[0016] The diagonal brace is respectively connected to the arc tube and the connecting bracket by welding.
[0017] In an exemplary embodiment of the present disclosure, the vehicle frame is located above the front lower protective cross beam, the front end attachment is arranged at the front end of the vehicle frame, and the front lower protective cross beam is welded to the connecting bracket.
[0018] In an exemplary embodiment of the present disclosure, the front lower protective cross beam and the connecting bracket are both made of steel or aluminum alloy.
[0019] The utility model has at least the following beneficial effects:
[0020] The present invention provides a height-adjustable front lower guard for heavy-duty commercial vehicles. Bolts are passed through the oblong holes and the connecting holes in sequence to achieve fixed connection between a connecting bracket and a vehicle frame or a front-end accessory. The front lower guard has a wide installation range and can be adapted to the use requirements of different vehicles. The installation position of the connecting bracket is adjusted by adjusting the installation position of the bolt in the oblong hole. The structure is simple and the operation is convenient. The ground clearance height of the front lower guard can be quickly adjusted to meet the legal ground clearance height restrictions and design passability requirements under different vehicle conditions. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.
[0022] Figure 1 The present invention is a schematic structural diagram of a height-adjustable front lower protection device for a heavy-duty commercial vehicle in one embodiment of the present invention.
[0023] Figure 2 The present invention is a schematic diagram of the installation structure of a height-adjustable front lower protection device for a heavy-duty commercial vehicle in one embodiment of the present invention.
[0024] Figure 3 It is a schematic cross-sectional view of a front lower protective beam in one embodiment of the present disclosure.
[0025] Figure 4 This is a schematic diagram of a first structure of a diagonal brace in one embodiment of the present disclosure.
[0026] Figure 5 This is a schematic diagram of a second structure of a diagonal brace in one embodiment of the present disclosure.
[0027] Description of reference numerals:
[0028] 1. Front lower protective beam; 101. Reinforcement plate; 102. Plug cover; 103. Straight tube; 104. Arc tube; 105. Diagonal brace; 2. Connecting bracket; 201. Long round hole; 3. Vehicle frame; 4. Front end accessories; 5. Connecting hole. DETAILED DESCRIPTION
[0029] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present disclosure will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted. In addition, the drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale.
[0030] The embodiment of the present disclosure provides a height-adjustable front lower protection device for heavy commercial vehicles, see Figure 1 and Figure 2, including a front lower protective cross beam 1, a connecting bracket 2, a frame 3 and a front end accessory 4. Two connecting brackets 2 are symmetrically arranged on the front lower protective cross beam 1. The connecting bracket 2 is provided with an oblong hole 201 extending in the longitudinal direction. The frame 3 is located above the front lower protective cross beam 1. The front end accessory 4 is arranged at the front bottom end of the frame 3. The frame 3 and the front end accessory 4 are respectively provided with connecting holes 5. The oblong hole 201 is connected to the connecting hole 5 on one of the frame 3 and the front end accessory 4 by bolts.
[0031] In the disclosed embodiment, the front lower protection device is composed of a front lower protection beam 1, a connecting bracket 2, a frame 3, and a front end accessory 4. The two connecting brackets 2 are symmetrically arranged on the front lower protection beam 1. The front lower protection beam 1 is installed on the frame 3 or the front end accessory 4 through the two connecting brackets 2. The connecting bracket 2 is provided with an oblong hole 201, and the oblong hole 201 extends in the longitudinal direction. The frame 3 and the front end accessory 4 are respectively provided with connecting holes 5. Bolts pass through the oblong holes 201 and the connecting holes 5 in sequence to fix the connecting bracket 2 with the frame 3 or the front end accessory 4. The connecting bracket 2 has a wide installation range and can meet the use requirements of different vehicles. By adjusting the installation position of the bolt in the oblong hole 201, that is, adjusting the connection position of the oblong hole 201 and the connecting hole 5, the ground clearance of the front lower protection beam 1 can be quickly adjusted, thereby meeting the legal ground clearance restrictions and design passability requirements under different vehicle conditions.
[0032] In one example, the front lower protection beam 1 is mounted on the vehicle frame 3 via two connecting brackets 2 .
[0033] In another example, the front lower protection beam 1 is mounted on the front end attachment 4 via two connecting brackets 2 .
[0034] In another embodiment of the present disclosure, screws are respectively provided on the frame 3 and the front end attachment 4, and the connecting bracket 2 is hung on the screw through the oblong hole 201. By adjusting the position of the screw in the oblong hole 201, the height of the front lower protective beam 1 from the ground is adjusted.
[0035] In one embodiment of the present disclosure, the distance between the two connecting brackets 2 is adjustable so that the front lower protection device can be installed on different vehicles.
[0036] In one embodiment of the present disclosure, see Figure 1 The oblong holes 201 are symmetrically arranged at both ends of the upper part of the connecting bracket 2, and the length of the oblong holes 201 is 50-70 mm. In this way, the height adjustment distance of the front lower protection beam 1 is 50-70 mm, which meets the ground clearance requirements of different models.
[0037] In one embodiment of the present disclosure, see Figure 3The cross section of the front lower protection beam 1 is rectangular; the height of the cross section is not less than 120 mm, the width of the cross section is not less than 70 mm, the corner of the cross section is rounded, and the radius of the rounded corner is greater than 3 mm. In this way, the volume of the front lower protection beam 1 is small, and it is easy to carry and install. The rounded corner can reduce the damage to the human body during a collision.
[0038] In one embodiment of the present disclosure, see Figure 3 At least one layer of reinforcing plate 101 is arranged in the front lower protection beam 1. In this way, the strength of the front lower protection beam 1 can be improved, and the deformation degree of the front lower protection beam 1 when a collision occurs can be reduced, thereby preventing people from being rolled under the vehicle and causing more serious injuries.
[0039] It can be understood that the front lower protective beam 1 is an outer rectangular tube and an inner local reinforcement structure. The cross-sectional height of the front lower protective beam 1 is not less than 120 mm, the width is not less than 70 mm, the radius of the four surrounding corners is greater than 3 mm, and the front lower protective beam 1 has no sharp edges, which can avoid secondary injuries to the human body in the event of a vehicle collision accident. The front lower protective beam 1 has high structural strength, which reduces the deformation of the front lower protective beam 1 and reduces the injuries to the human body.
[0040] In one embodiment of the present disclosure, see Figure 1 and Figure 2 , blocking covers 102 are respectively provided at both ends of the front lower protection beam 1. In this way, the front lower protection beam 1 of the outer rectangular tube structure is sealed by the blocking cover 102 to prevent rainwater from entering the front lower protection beam 1, thereby improving the service life of the front lower protection beam 1.
[0041] In one embodiment of the present disclosure, see Figure 1 and Figure 2 The front lower protection beam 1 includes a straight tube 103 and an arc tube 104. The arc tube 104 is symmetrically arranged at both ends of the straight tube 103. The connecting bracket 2 is arranged on the straight tube 103. The arc tube 104 is bent toward the rear end of the vehicle frame 3. In this way, both ends of the front lower protection beam 1 are bent toward the rear end of the vehicle frame 3, the front lower protection beam 1 is in an arc shape, and the front lower protection beam 1 is in a semi-enclosed structure to protect the bottom of the vehicle, thereby increasing the protection range of the front lower protection beam 1 and improving the driving safety of the vehicle.
[0042] In one embodiment of the present disclosure, see Figure 4 and Figure 5 The front lower protection beam 1 further includes a diagonal brace 105, which is horizontally arranged at a side of the two connecting brackets 2 that are away from each other, and the connecting bracket 2 and the arc tube 104 are connected by the diagonal brace 105. In this way, the collision strength of the arc tube 104 can be improved, the deformation degree of the arc tube 104 can be reduced, and the service life of the arc tube 104 can be improved.
[0043] In one example, see Figure 4 The diagonal brace 105 is a rectangular metal tube, one end of the diagonal brace 105 is connected to the inner wall of the arc tube 104, and the other end is connected to the connecting bracket 2.
[0044] In another example, see Figure 5 The diagonal brace 105 is a triangular metal plate, one side wall of the diagonal brace 105 is connected to the inner wall of the front lower protective beam 1, and the other side wall of the diagonal brace 105 is connected to the connecting bracket 2.
[0045] In one embodiment of the present disclosure, the front lower protection beam 1 is welded to the connecting bracket 2, and the diagonal brace 105 is respectively welded to the arc tube 104 and the connecting bracket 2. In this way, the connection firmness between the front lower protection beam 1 and the connecting bracket 2, and between the diagonal brace 105 and the arc tube 104 and the connecting bracket 2 can be improved, thereby improving the strength of the entire device, preventing the front lower protection device from cracking or falling apart due to collision, and improving the protection performance of the front lower protection device.
[0046] In one embodiment of the present disclosure, the front lower protection beam 1 and the connecting bracket 2 are both made of steel, aluminum alloy or other alloy materials. In this way, the front lower protection beam 1 and the connecting bracket 2 can be made light in structure, easy to process, easy to assemble and install the front lower protection device, and at the same time, the strength of the front lower protection beam 1 and the connecting bracket 2 can be improved.
[0047] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the utility model disclosed herein. This application is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.
Claims
1. A height-adjustable front lower protection device for a heavy commercial vehicle, comprising a front lower protection crossbeam (1), a connecting bracket (2), a vehicle frame (3) and a front end attachment (4), characterized in that: Two connecting brackets (2) are symmetrically arranged on the front lower protective cross beam (1), and an oblong hole (201) extending in the longitudinal direction is arranged on the connecting bracket (2). The vehicle frame (3) and the front end accessory (4) are respectively provided with connecting holes (5), and the oblong hole (201) is connected to the connecting hole (5) on one of the vehicle frame (3) and the front end accessory (4) by bolts.
2. A height-adjustable front lower protection device for heavy commercial vehicles according to claim 1, characterized in that: The oblong holes (201) are symmetrically arranged at two ends of the upper portion of the connecting bracket (2), and the length of the oblong holes (201) is 50-70 mm.
3. The height-adjustable front lower protection device for heavy commercial vehicles according to claim 1, characterized in that: The cross section of the front lower protective beam (1) is rectangular; The height of the cross section is not less than 120 mm, the width of the cross section is not less than 70 mm, the corners of the cross section are rounded, and the radius of the rounded corners is greater than 3 mm.
4. The height-adjustable front lower protection device for heavy commercial vehicles according to claim 1, characterized in that: At least one layer of reinforcing plate (101) is arranged inside the front lower protective cross beam (1), and blocking covers (102) are respectively arranged at both ends of the front lower protective cross beam (1).
5. The height-adjustable front lower protection device for heavy commercial vehicles according to claim 1, characterized in that: The front lower protection beam (1) comprises a straight tube (103) and an arc tube (104). The arc tube (104) is symmetrically arranged at both ends of the straight tube (103), the connecting bracket (2) is arranged on the straight tube (103), and the arc tube (104) is bent toward the rear end of the frame (3).
6. A height-adjustable front lower protection device for heavy commercial vehicles according to claim 5, characterized in that: The front lower protection beam (1) further comprises a diagonal brace (105), The diagonal brace (105) is horizontally arranged on a side of the two connecting brackets (2) that is away from each other, and the connecting bracket (2) and the arc tube (104) are connected via the diagonal brace (105); The diagonal brace (105) is respectively connected to the arc tube (104) and the connecting bracket (2) by welding.
7. The height-adjustable front lower protection device for heavy commercial vehicles according to claim 1, characterized in that: The vehicle frame (3) is located above the front lower protective cross beam (1), the front end attachment (4) is arranged at the front end of the vehicle frame (3), and the front lower protective cross beam (1) is welded to the connecting bracket (2).
8. The height-adjustable front lower protection device for heavy commercial vehicles according to claim 1, characterized in that: The front lower protective cross beam (1) and the connecting bracket (2) are both made of steel or aluminum alloy.