Adjustable lower protection device for commercial vehicle

Abstract

The utility model discloses an adjustable lower protection device for a commercial vehicle. An anti-collision cross beam is connected with a vehicle frame through a supporting piece and a supporting adjusting piece; the supporting adjusting piece is provided with an extending part towards the web face of the frame, and the extending part penetrates through the back face of the frame through a first bolt piece and is connected with the frame. The supporting adjusting piece is provided with a supporting part towards the wing face of the frame, and the supporting part penetrates through the bottom face of the frame through a second bolt piece and is connected with the bottom face of the frame. A plurality of screw holes are vertically and evenly formed in a body of the supporting adjusting piece, and the supporting piece and the supporting adjusting piece are connected in the mode that third bolt pieces penetrate through the screw holes. And the supporting piece is connected with the anti-collision cross beam to finally form the adjustable lower protection device for the commercial vehicle. The supporting adjusting piece is arranged to adapt to the height difference of different vehicle types and has the adjusting function, and the minimum terrain clearance required by the national standard is guaranteed. The first bolt piece and the second bolt piece form a reliable connection relation with the frame, and at the moment, the anti-collision performance is finally decomposed through the frame and forms an adjusting relation with the supporting piece.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle protection, and particularly relates to an adjustable lower protection device for commercial vehicles. Background Technique

[0002] According to the requirements of the national mandatory standard GB7258-2017 "Motor Vehicle Operating Safety Technical Conditions", trucks and special operation vehicles with a total mass greater than 7.5 tons must be equipped with front, side and rear protection devices. The aim is to reduce the fatal injuries brought to drivers and passengers after a vehicle collision.

[0003] GB26511-2011 "Requirements for Front Lower Protection of Commercial Vehicles" stipulates the technical requirements for front lower protection devices, and GB11567-2017 "Requirements for Side and Rear Lower Protection of Motor Vehicles and Trailers" stipulates the technical requirements for side and rear protection devices.

[0004] The authorized announcement number CN 222097589 U is an anti-collision cross beam of an automobile lower protection device. The cross section of the anti-collision cross beam is a "day" - shaped structure, which provides a reinforcing rib mode in the middle cavity of the anti-collision cross beam. An installation seat is also connected to the outer shaft diameter of the anti-collision cross beam through a transition sleeve block. In the connection structure between the anti-collision cross beam and the vehicle frame, the transition of the transition sleeve block is adopted, aiming to protect the anti-collision cross beam and prevent it from rubbing against steel parts during vehicle operation, damaging or wearing off fibers, and shortening the product life; at the same time, it also provides a buffer structure for the cross beam.

[0005] The application publication number CN 117207909 A is a front anti-collision beam assembly and its production process. By setting a buffer plate, when the front anti-collision beam assembly is impacted, the impact force received by the front anti-collision beam assembly can be absorbed and buffered, so as to protect the driver.

[0006] The authorized announcement number CN 219584125 U is an anti-collision beam assembly and a vehicle. The anti-collision beam assembly includes: an anti-collision beam, an energy absorption box and a force transmission component. It can achieve guiding the collision force from the anti-collision cross beam to the energy absorption box on the longitudinal beam effectively through the force transmission component in a small offset collision, reducing the intrusion amount of the occupant compartment to improve the safety of the occupants.

[0007] The above patent documents provide various anti-collision modes, but cannot solve the problem of universality, that is, fine-tuning can achieve the assembly of different vehicle models. Content of the Utility Model

[0008] The purpose of the utility model is to solve the problem of universality, that is, fine-tuning can achieve the assembly of different vehicle models, and particularly provides an adjustable lower protection device for commercial vehicles.

[0009] Therefore, the technical solution of this utility model is: an adjustable lower protection device for commercial vehicles, including a collision beam, characterized in that: the collision beam is connected to the vehicle frame through a support member and a support adjustment member;

[0010] The support adjustment component has multiple screw holes evenly arranged vertically on its body, and the support component and the support adjustment component are connected by a third bolt that passes through the screw holes;

[0011] The aforementioned support component is then connected to the anti-collision beam to ultimately form an adjustable underrun protection device for commercial vehicles.

[0012] The effect is that the support adjustment component is designed to accommodate the height differences of different vehicle models and ensure that the minimum ground clearance required by national standards is met.

[0013] A further improvement is that the support adjustment member has an extension on the web surface of the frame, wherein the extension passes through the back of the frame through the first bolt and forms a connection relationship;

[0014] The aforementioned support adjustment member has a support portion on the frame wing surface, wherein the support portion is connected to the bottom surface of the frame by a second bolt.

[0015] The first and second bolts form a reliable connection with the frame. The lateral connection of the first bolt and the vertical connection of the second bolt form a three-dimensional connection. At this point, the anti-collision performance is ultimately decomposed through the frame.

[0016] Multiple screw holes are vertically and evenly arranged on the body of the support and adjustment component to form an adjustment relationship with the support component.

[0017] A further improvement is that: a wrapping component is provided under the support component, which wraps the anti-collision beam to form a semi-enclosed structure, wherein the wrapping component is connected and fixed by a fourth bolt that passes through the anti-collision beam;

[0018] The opening in the semi-enclosed structure faces the direction of the car's impact.

[0019] The effect is that the wrapping component encloses the anti-collision beam to form a semi-enclosed structure, which aims to orient the anti-collision beam toward the direction of the car's impact, so that the stress in the CAE analysis of the anti-collision beam can be enclosed and decomposed through the semi-enclosed structure.

[0020] The further improvement is that the anti-collision beam is made of fiber-reinforced composite material; and protective components are also provided at both ends of the anti-collision beam.

[0021] The effects are as follows: The fiber-reinforced composite material is not only for weight reduction but also for increasing its strength. While providing support to the fiber-reinforced composite material of the anti-collision beam, it increases the bending strength of the anti-collision beam by strengthening the ribs, and while providing support to the fiber-reinforced composite material of the anti-collision beam, it increases the bending strength of the anti-collision beam. At this time, the formed anti-collision beam has the advantages of profiles and can be pultruded and mass-produced.

[0022] The further improvement lies in that: the support member is a bent channel structure and extends to the rear of the wrapper, and a strengthening member is also provided between the support member and the wrapper.

[0023] The effects are as follows: The support member being a bent channel structure has a certain strength, and the setting of the strengthening member also provides a strong support from the rear of the wrapper.

[0024] The further improvement lies in that: the cross-section of the anti-collision beam is a "day" - shaped structure; in the "day" - shaped structure of the anti-collision beam, the cross-sectional thickness one of the front end face is less than the cross-sectional thickness two of the rear end face; in the "day" - shaped structure of the anti-collision beam, the cross-sectional thickness of the upper and lower horizontal parts is less than the cross-sectional thickness three of the middle part; the thickness of the cross-sectional thickness two is the same as the cross-sectional thickness three of the middle part in the "day" - shaped structure of the anti-collision beam; the cross-sectional thickness of the upper and lower horizontal parts is the same as the thickness of the cross-sectional thickness one.

[0025] The effects are as follows: The cross-section of the anti-collision beam being a "day" - shaped structure provides a rib - strengthening mode in the middle cavity of the anti-collision beam. Due to the inherent mechanical properties of the fiber - reinforced pultruded profiles, its tensile strength is greater than the compressive strength. By thinning the cross-sectional thickness one of the tensile stress surface and thickening the cross-sectional thickness two of the compressive surface, the equal - strength design goal is achieved, effectively improving the material utilization efficiency.

[0026] Beneficial effects: The utility model has an adjustment function for the height differences of different vehicle models, ensuring its safe ground clearance; finally forming an adjustable lower protection device for commercial vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] <00><000058> is the three - dimensional perspective view of the assembly structure of the utility model Figure 1 .

[0028] Figure 2 is the three - dimensional perspective view of the assembly structure of the utility model Figure 2 .

[0029] Figure 3 is the front - view structural schematic diagram of the utility model.

[0030] Figure 4 Figure 3 is the top - view structural schematic diagram.

[0031] Figure 5 is Figure 3 A sectional view taken along the A - A direction.

[0032] Figure 6 is Figure 3 A bottom view.

[0033] Figure 7 is a sectional view of the anti - collision cross - beam 1.

[0034] 1 is the anti - collision cross - beam, 12 is the "day" - shaped structure, 13 is the far end face, 14 is the first sectional thickness, 15 is the near end face, 16 is the second sectional thickness, 17 is the upper horizontal part, 18 is the lower horizontal part, 19 is the third sectional thickness;

[0035] 2 is the vehicle frame, 21 is the first bolt member, 22 is the second bolt member;

[0036] 3 is the support adjustment member, 31 is the screw hole, 32 is the third bolt member, 33 is the support part, 34 is the extension part; 4 is the support member, 5 is the wrapping member, 51 is the fourth bolt member, 6 is the protection member, 7 is the strengthening member. Specific implementation mode

[0037] The present utility model is as Figure 1-7 shown:

[0038] An adjustable lower protection device for commercial vehicles, comprising an anti - collision cross - beam 1, and the anti - collision cross - beam 1 is connected to the vehicle frame 2 through a support member 4 and a support adjustment member 3;

[0039] The support adjustment member 3 has an extension part 34 facing the web surface of the vehicle frame 2, and the extension part 34 passes through the back surface of the vehicle frame 2 through the first bolt member 21 and forms a connection relationship;

[0040] The support adjustment member 3 has a support part 33 facing the wing surface of the vehicle frame 2, and the support part 33 passes through the bottom surface of the vehicle frame 2 through the second bolt member 22 and forms a connection relationship;

[0041] The support adjustment member 3 is vertically and uniformly provided with a plurality of screw holes 31 on its body, and the support member 4 and the support adjustment member 3 form a connection relationship by passing the third bolt member 32 through the screw holes 31;

[0042] The support member 4 is further connected to the anti - collision cross - beam 1 to finally form an adjustable lower protection device for commercial vehicles.

[0043] The setting of the support adjustment member 3 is for adjusting the height difference of different vehicle models and ensuring its safe ground clearance;

[0044] The first bolt member 21 and the second bolt member 22 form a reliable connection with the vehicle frame 2. The lateral connection of the first bolt member 21 and the vertical connection of the second bolt member 22 form a three-dimensional connection relationship. At this time, the anti-collision performance is finally decomposed through the vehicle frame;

[0045] A plurality of screw holes 31 are vertically and uniformly arranged on the body of the support adjusting member 3 for the purpose of forming an adjusting relationship with the support member 4.

[0046] A wrapping member 5 is further provided under the support member 4. The wrapping member 5 wraps the anti-collision cross beam 1 to form a semi-surrounding structure. The wrapping member 5 is fixedly connected through a fourth bolt member 51 penetrating the anti-collision cross beam 2;

[0047] The opening of the semi-surrounding structure faces the impact direction of the vehicle.

[0048] The wrapping member 5 wraps the anti-collision cross beam 1 to form a semi-surrounding structure for the purpose of orienting the anti-collision cross beam towards the impact direction of the vehicle, so that the stress in the CAE analysis of the anti-collision cross beam is wrapped and decomposed by the semi-surrounding structure.

[0049] The anti-collision cross beam 1 is made of fiber-reinforced composite material; protective members 6 are further provided at both ends of the anti-collision cross beam 1.

[0050] The fiber-reinforced composite material is not only for weight reduction but also for increasing its strength; while providing a support for the fiber-reinforced composite material of the anti-collision cross beam, it increases the bending strength of the anti-collision cross beam in the form of a reinforcing rib, and while providing a support for the fiber-reinforced composite material of the anti-collision cross beam, it increases the bending strength of the anti-collision cross beam. At this time, the formed anti-collision cross beam has the advantages of profiles and can be pultruded and mass-produced.

[0051] The support member 4 is a bent channel structure and extends to the rear of the wrapping member 5. At the same time, a strengthening member 7 is provided between the support member 4 and the wrapping member 5.

[0052] The support member 4 being a bent channel structure has a certain strength, and the setting of the strengthening member 7 also gives a strong support from the rear of the wrapping member 5.

[0053] The cross-section of the anti-collision cross beam 1 is a "day" - shaped structure 12; in the "day" - shaped structure 12 of the anti-collision cross beam 1, the cross-sectional thickness one 14 of the front end face 13 is less than the cross-sectional thickness two 16 of the rear end face 15; in the "day" - shaped structure 12 of the anti-collision cross beam 1, the cross-sectional thicknesses of the upper horizontal part 17 and the lower horizontal part 17 are less than the middle cross-sectional thickness three 19; the thickness of the cross-sectional thickness two 16 is the same as the middle cross-sectional thickness three 19 in the "day" - shaped structure 12 of the anti-collision cross beam 1; the cross-sectional thicknesses of the upper horizontal part 17 and the lower horizontal part 18 are the same as the thickness of the cross-sectional thickness one 14.

Claims

1. An adjustable lower protection device for a commercial vehicle, comprising a crash beam (1), characterized in that: The anti-collision cross beam (1) is connected to the vehicle frame (2) through a support member (4) and a support adjustment member (3); the support adjustment member (3) has an extension portion (34) extending towards the back surface of the vehicle frame (2), and the extension portion (34) forms a connection relationship by passing through the back surface of the vehicle frame (2) with a first bolt member (21); the support adjustment member (3) has a support portion (33) extending towards the bottom surface of the vehicle frame (2), and the support portion (33) forms a connection relationship by passing through the bottom surface of the vehicle frame (2) with a second bolt member (22); the support adjustment member (3) is vertically and uniformly provided with a plurality of screw holes (31) on its body, and the support member (4) and the support adjustment member (3) form a connection relationship by passing through the screw holes (31) with a third bolt member (32); the support member (4) is then connected to the anti-collision cross beam (1) to finally form an adjustable lower protection device for a commercial vehicle; A wrapping member (5) is further provided under the support member (4), and the wrapping member (5) wraps the anti-collision cross beam (1) to form a semi-surrounding structure, and the wrapping member (5) is connected and fixed by a fourth bolt member (51) passing through the anti-collision cross beam (1); the opening of the semi-surrounding structure faces the impact direction of the vehicle.

2. An adjustable lower guard for a commercial vehicle as claimed in claim 1, characterised in that: The anti-collision cross beam (1) is made of a fiber-reinforced composite material; protective members (6) are further provided at both ends of the anti-collision cross beam (1).

3. The adjustable underguard for a commercial vehicle of claim 1, wherein: The support member (4) is a bent channel structure and extends to the rear of the wrapping member (5), and a strengthening member (7) is further provided between the support member (4) and the wrapping member (5).

4. The adjustable underguard for a commercial vehicle of claim 1, wherein: The cross-section of the anti-collision cross beam (1) is a "day" - shaped structure (12); in the "day" - shaped structure (12) of the anti-collision cross beam (1), the cross-sectional thickness one (14) of the front end face (13) is less than the cross-sectional thickness two (16) of the rear end face (15); in the "day" - shaped structure (12) of the anti-collision cross beam (1), the cross-sectional thicknesses of the upper cross part (17) and the lower cross part (18) are less than the middle cross-sectional thickness three (19).

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