Bottom guard plate of heavy truck

Abstract

The utility model discloses a bottom guard plate of a heavy truck, which is mounted at the bottom of a truck body and comprises a middle guard plate and end guard plates respectively arranged at two ends of the middle guard plate. The end protection plate and the middle protection plate are used for being detachably installed at the lower end of a bumper and located on the inner side of a U-shaped frame. The bottom surface of the middle protection plate and the bottom surfaces of the end protection plates are combined to form a protection surface of the bottom protection plate; every two of the middle protection plate, the end protection plate and the frame are detachably connected. Compared with the prior art, the bottom protection plate of the heavy truck adopts a detachable connection structure of the middle protection plate and the end protection plate, so that the requirements on production equipment and the production difficulty can be effectively reduced, the later replacement and maintenance cost is reduced, and meanwhile, the transportation and the installation are also convenient.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a bottom guard plate for heavy-duty trucks. Background Technology

[0002] Heavy-duty truck underbody protection plates are an important component of heavy-duty trucks. They are protective devices specifically designed to protect the chassis of heavy-duty trucks. They are usually made of high-strength, wear-resistant materials and are designed to provide sufficient protection to prevent the chassis from being impacted or scratched, and to achieve dust and water resistance, thereby improving the safety and stability of the vehicle.

[0003] Underbody protection plates are typically installed at the bottom of a vehicle, posing a risk of direct impact with the ground when the vehicle traverses uneven surfaces. While the probability of simultaneous damage to the left, center, and right sides is relatively low, existing technologies, such as the Chinese utility model patents with announcement numbers CN210941632U, CN214929561U, CN219524056U, and CN222224056U, disclose various underbody protection plate components, all of which are integral structures. This means that if a part of the underbody protection plate deforms or is damaged, the entire plate needs to be replaced, increasing subsequent vehicle maintenance costs. Furthermore, for heavy trucks, an integral underbody protection plate results in a larger overall size, hindering storage and installation. Producing larger underbody protection plates also increases the requirements and manufacturing complexity of production equipment. Additionally, heavy trucks experience significant wind resistance during operation, impacting their range.

[0004] Therefore, it is necessary to improve the underbody protection plates of heavy-duty trucks in the existing technology. Utility Model Content

[0005] The purpose of this utility model is to overcome the defects in the existing technology and provide a heavy truck underbody protection plate that reduces production equipment requirements and production difficulty, reduces later maintenance costs, facilitates transportation and installation, and reduces wind resistance to improve range.

[0006] To achieve the above-mentioned technical effects, the technical solution of this utility model is: a heavy-duty truck underbody protection plate, installed on the bottom of the truck body, comprising:

[0007] The middle guard plate and the end guard plates located at both ends of the middle guard plate;

[0008] The end guard plate and the middle guard plate are detachably installed on the inner side of the U-shaped frame at the lower end of the bumper;

[0009] The bottom surface of the middle guard plate and the bottom surface of the end guard plate are combined to form the protective surface of the bottom guard plate;

[0010] The middle guard plate, the end guard plate and the frame are detachably connected with each other.

[0011] Preferably, in order to improve the quality of the bottom guard plate, the end guard plate is attached to the inner side wall of the frame, and the end guard plate and the middle guard plate are attached to the inner bottom wall of the frame.

[0012] Preferably, in order to facilitate the detachable connection between the middle guard plate, the end guard plate and the frame, the middle guard plate, the end guard plate and the frame are detachably connected with each other through bolts.

[0013] Preferably, in order to reduce wind resistance, a wind guide strip is detachably arranged on the bottom surface of the middle guard plate and the bottom surface of the end guard plate, one side of the wind guide strip adjacent to the front end of the vehicle body is a wind guide surface, the opening of the wind guide surface faces away from the front end of the vehicle body and is in the shape of an expanding mouth, and the middle part of the wind guide surface is connected to the end part through a circular arc.

[0014] Preferably, in order to achieve wind guiding and buffering when colliding with the ground, the wind guide strip is an IRHD60-80 soft rubber strip.

[0015] Preferably, in order to facilitate the storage and transportation of the wind guide strip, the wind guide strip comprises a middle guide strip detachably connected to the middle guard plate and an end guide strip detachably connected to the end guard plate.

[0016] Preferably, in order to facilitate the installation and storage of the transportation strip, the middle guide strip and the middle guard plate and the end guide strip and the end guard plate are detachably connected through fasteners, and the fasteners are snap-fitted with the middle guard plate and the end guard plate.

[0017] Preferably, in order to achieve convenient disassembly, installation and maintenance of the wind guide strip, the fastener comprises a fastening shaft, a fixing disc and a clamping jaw, the fixing disc is fixed to the outer periphery of the fastening shaft, the clamping jaw is integrally formed on the fixing disc, the middle guard plate and the end guard plate are each provided with a clamping opening, and the clamping jaw is clamped to the inner side of the clamping opening.

[0018] Preferably, in order to ensure installation accuracy, the middle guide strip is snap-fitted with the middle guard plate, and the end guide strip is snap-fitted with the end guard plate.

[0019] Preferably, in order to facilitate assembly and improve the installation accuracy of the end guard plate and the end guide strip and the middle guard plate and the middle guide strip, the bottom surface of the end guard plate is provided with a positioning end slot, the bottom surface of the middle guard plate is provided with a positioning middle slot, and the positioning end slot and the positioning middle slot are respectively adapted to the top of the end guide strip and the top of the middle guide strip.

[0020] In summary, the bottom guard plate of the heavy truck of the utility model compared with prior art, adopt the detachable connection structure of middle guard plate and end guard plate, can effectively reduce production equipment requirement and production difficulty, and reduce the later replacement maintenance cost, also convenient transportation and installation. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the structural schematic diagram of the utility model;

[0022] Figure 2 is Figure 1 the explosion schematic diagram of the utility model;

[0023] Figure 3 is the structural schematic diagram of another view of the utility model;

[0024] Figure 4 is the explosion schematic diagram of the utility model; Figure 3

[0025] Figure 5 is the explosion schematic diagram of the end guard plate of the utility model;

[0026] Figure 6 is the structural schematic diagram of the middle guard plate of the utility model;

[0027] Figure 7 is the explosion schematic diagram of the utility model; Figure 6

[0028] Figure 8 is the structural schematic diagram of the fastener of the utility model;

[0029] In the drawing: 1, middle guard plate; 11, positioning middle groove; 12, middle extension plate; 2, end guard plate; 21, positioning end groove; 22, end extension plate; 3, frame; 4, air guide strip; 41, middle guide strip; 42, end guide strip; 5, fastener; 51, fastening shaft; 52, fixed disc; 53, claw; 54, end plate; 6, bayonet; 7, connecting plate; 8, spring piece nut. DETAILED DESCRIPTION

[0030] The specific implementation of the utility model will be further described below in combination with the drawings and examples. The following examples are only used to more clearly illustrate the technical scheme of the utility model, and cannot limit the protection scope of the utility model.

[0031] As Figures 1-8 shown, the bottom guard plate of the heavy truck of the utility model is installed at the bottom of the vehicle body, comprising:

[0032] middle guard plate 1 and end guard plate 2 arranged at both ends of the middle guard plate 1;

[0033] ​​The end protection plate 2 and the middle protection plate 1 are used for being detachably mounted on the inner side of the U-shaped frame 3 at the lower end of the bumper;

[0034] The bottom surface of the middle protection plate 1 and the bottom surface of the end protection plate 2 combine to form a protective surface of the bottom protection plate;

[0035] The middle protection plate 1, the end protection plate 2 and the frame 3 are detachably connected with each other.

[0036] The bottom protection plate mainly comprises the middle protection plate 1 and two end protection plates 2, the overall structure of the bottom protection plate is a symmetrical structure, the two end protection plates 2 are left-right symmetrical, the length of the middle protection plate 1 is 1.2-1.5 times the sum of the lengths of the two end protection plates 2, and the middle protection plate 1 and the two end protection plates 2 are all mounted on the inner side of the frame 3 below the heavy truck bumper, the frame 3 is usually U-shaped and fixedly mounted below the heavy truck bumper.

[0037] Compared with the prior art, the bottom protection plate adopts a split structure, and the middle protection plate 1, the end protection plate 2 and the frame 3 are detachably connected, so that a relatively large bottom protection plate is divided into three parts, which can reduce the production equipment requirements and the production difficulty, and since the bottom protection plate is divided into three parts, it is convenient to stack and transport, and the size of the middle protection plate 1 and the end protection plate 2 is smaller than that of the bottom protection plate, so the size is reduced, which is convenient for installation, and after long-term use of the heavy truck, when part of the middle protection plate 1 or the end protection plate 2 is deformed and damaged, only the damaged part needs to be disassembled and replaced with the intact protection plate, without the need to replace the entire bottom protection plate, so that the maintenance cost in the later period can be effectively reduced.

[0038] Further improvement is that the end protection plate 2 is attached to the inner side wall of the frame 3, and the end protection plate 2 and the middle protection plate 1 are attached to the inner bottom wall of the frame 3.

[0039] By adopting the above design, the gap between the end protection plate 2, the middle protection plate 1 and the frame 3 is reduced, the end protection plate 2 and the middle protection plate 1 are prevented from loosening, and the quality of the bottom protection plate is ensured.

[0040] Further improvement is that the middle protection plate 1, the end protection plate 2 and the frame 3 are detachably connected with each other through bolts.

[0041] Specifically, the upper part of the middle protection plate 1 and the upper part of the end protection plate 2 are both provided with a connecting plate 7, one end of the connecting plate 7 penetrates through a bolt and is detachably connected with the middle protection plate 1 through the bolt, the other end of the connecting plate 7 penetrates through a bolt and is detachably connected with the end protection plate 2, so that the detachable connection between the middle protection plate 1 and the end protection plate 2 is realized.

[0042] The middle extension plate 12 is arranged on the side wall adjacent to the frame 3 of the middle guard plate 1, and is attached to the upper side of the frame 3. The reed nut 8 is arranged on the middle extension plate 12, and is threadedly connected after the bolt is arranged through the reed nut 8, so as to realize the detachable fixed connection of the middle guard plate 1 and the frame 3.

[0043] The end extension plate 22 is arranged on the side wall adjacent to the frame 3 of the end guard plate 2, and is attached to the upper side of the frame 3. The reed nut 8 is arranged on the end extension plate 22, and is threadedly connected after the bolt is arranged through the reed nut 8, so as to realize the detachable fixed connection of the end guard plate 2 and the frame 3.

[0044] Further improvement is that the air guide strip 4 is detachably arranged on the bottom surface of the middle guard plate 1 and the bottom surface of the end guard plate 2. One surface of the air guide strip 4 is adjacent to the front end of the vehicle body, and the opening of the surface faces away from the front end of the vehicle body and is flared. The middle part of the surface is connected to the end part in an arc transition.

[0045] The cross section of the air guide strip 4 is L-shaped. One surface of the air guide strip 4 is fixed to the bottom surface of the middle guard plate 1 and the bottom surface of the end guard plate 2. The other surface faces the front end of the vehicle body. The surface is the air guide surface, and the opening formed by the surface faces away from the front end of the vehicle body. The middle part of the surface is horizontal, and the two ends are arc-shaped. The air guide strip 4 can guide the air flow at the bottom of the heavy truck, guide the wind from the front of the vehicle to the two sides of the bottom of the heavy truck, thereby reducing the wind resistance and improving the endurance of the heavy truck.

[0046] Further improvement is that the air guide strip 4 is an IRHD 60-80 soft rubber strip.

[0047] The IRHD 60-80 soft rubber strip refers to a soft rubber strip with a hardness in the range of IRHD international rubber hardness degree 60 to 80. The use of this material makes the air guide strip 4 have a certain elasticity and hardness. On the one hand, it can reduce wind resistance and guide the direction of air flow. On the other hand, due to its elasticity, it will not be damaged even if it collides with the ground, thereby achieving good cushioning function. In addition, it also has a certain resistance to wear and tear risk, thereby prolonging the service life.

[0048] Further improvement is that the air guide strip 4 includes a middle air guide strip 41 detachably connected to the middle guard plate 1 and an end air guide strip 42 detachably connected to the end guard plate 2.

[0049] The design of the air guide strip 4 as one middle air guide strip 41 and two end air guide strips 42 facilitates storage and transportation, avoids the length of the air guide strip 4 being too large, and increases the storage and transportation space.

[0050] Further improvement is that the middle air guide strip 41 and the middle guard plate 1 are detachably connected through the fastener 5, and the end air guide strip 42 and the end guard plate 2 are detachably connected through the fastener 5. The fastener 5 is clamped and matched with the middle guard plate 1 and the end guard plate 2.

[0051] With the design, the air guide strip 4 is convenient to maintain and replace, and the maintenance cost is reduced.

[0052] Further improvement is that the middle guide strip 41 is inserted and matched with the middle guard plate 1, and the end guide strip 42 is inserted and matched with the end guard plate 2; the bottom surface of the end guard plate 2 is provided with a positioning end slot 21, and the bottom surface of the middle guard plate 1 is provided with a positioning middle slot 11, and the positioning end slot 21 and the positioning middle slot 11 are respectively matched with the top of the end guide strip 42 and the top of the middle guide strip 41.

[0053] With the above design, the positioning end slot 21 is arranged on the end guard plate 2, so that the end guide strip 42 is convenient to position, and the positioning middle slot 11 is arranged on the middle guard plate 1, so that the middle guide strip 41 is convenient to position, thereby ensuring the positioning accuracy of the air guide strip 4, the middle guard plate 1 and the end guard plate 2.

[0054] Further improvement is that the fastener 5 comprises a fastening shaft 51, a fixed disc 52 and a clamping jaw 53, the fixed disc 52 is fixed to the outer periphery of the fastening shaft 51, the clamping jaw 53 is integrally formed on the fixed disc 52, the middle guard plate 1 and the end guard plate 2 are both provided with a bayonet 6, and the clamping jaw 53 is clamped to the inner side of the bayonet 6.

[0055] The end of the fastening shaft 51 is further fixed with an end plate 54, the end plate 54 is located on the side of the fixed disc 52 away from the clamping jaw 53, the clamping jaw 53 is provided with four, and is arranged in an annular array on the fixed disc 52, the clamping jaw 53 is a flexible clamping jaw 53, and the fastening shaft 51 is transmitted to the inner side of the middle guide strip 41 (or the end guide strip 42) and the bayonet 6.

[0056] After the above design, the four clamping jaws 53 are brought close to the axial line of the fastening shaft 51, so that they are deformed to pass through the inner side of the middle guide strip 41 (or the end guide strip 42) and the bayonet 6, until the fixed disc 52 abuts against the middle guide strip 41 (or the end guide strip 42), and after the deformation of the clamping jaw 53, the clamping jaw 53 is deformed to move away from the axial line of the fastening shaft 51, so that the clamping jaw 53 is clamped to the inner wall of the bayonet 6, thereby completing the connection of the middle guide strip 41 and the middle guard plate 1 (or the connection of the end guide strip 42 and the end guard plate 2). When the middle guide strip 41 or the end guide strip 42 needs to be replaced, the four clamping jaws 53 are brought close to the axial line of the fastening shaft 51, so that the fastener 5 can be conveniently taken out, and the middle guide strip 41 or the end guide strip 42 is disassembled for replacement.

[0057] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary technical personnel in the technical field, without departing from the technical principle of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection range of the present application.

Claims

1. A bottom apron of a heavy duty truck installed at a bottom of a body of the truck, characterized in that, The utility model relates to a bumper protection plate, comprising: a middle protection plate and end protection plates arranged at both ends of the middle protection plate; the end protection plates and the middle protection plate are used for detachable installation in the inner side of the frame of the U-shaped bumper lower end; the bottom surface of the middle protection plate and the bottom surface of the end protection plate combine to form the protection surface of the bottom protection plate; the middle protection plate, the end protection plate and the frame are detachably connected with each other.

2. The underbody shield for a heavy truck of claim 1, wherein: the end protection plate is attached to the inner side wall of the frame, and the end protection plate and the middle protection plate are attached to the inner bottom wall of the frame.

3. The underbody shield for a heavy truck of claim 1, wherein: the middle protection plate, the end protection plate and the frame are detachably connected with each other through bolts.

4. The underbody shield for a heavy truck of claim 1, wherein: the utility model further comprises air guide strips detachably arranged on the bottom surface of the middle protection plate and the bottom surface of the end protection plate, one side of the air guide strips adjacent to the front end of the vehicle body is an air guide surface, the opening of the air guide surface faces away from the front end of the vehicle body and is in the shape of an expanding mouth, and the middle part of the air guide surface is connected to the end part through a circular arc.

5. The underbody shield for a heavy duty truck of claim 4, wherein: the air guide strips are IRHD 60-80 soft rubber strips.

6. The rocker panel for a heavy duty truck of claim 4, wherein: the air guide strips comprise middle air guide strips detachably connected to the middle protection plate and end air guide strips detachably connected to the end protection plate.

7. The underbody shield for a heavy duty truck of claim 6, wherein: the middle air guide strips and the end air guide strips are detachably connected to the middle protection plate and the end protection plate through fasteners, and the fasteners are snap-fitted to the middle protection plate and the end protection plate.

8. The underbody shield for a heavy duty truck of claim 7, characterized by: the fasteners comprise fastening shafts, fixing discs and clamping claws, the fixing discs are fixed to the outer periphery of the fastening shafts, the clamping claws are integrally formed on the fixing discs, the middle protection plate and the end protection plate are provided with clamping ports, and the clamping claws are clamped to the inner side of the clamping ports.

9. The skirting panel for a heavy duty truck of claim 6, wherein: the middle air guide strips are snap-fitted to the middle protection plate, and the end air guide strips are snap-fitted to the end protection plate.

10. The underbody shield for a heavy duty truck of claim 9, characterized in that: the bottom surface of the end protection plate is provided with a positioning end groove, the bottom surface of the middle protection plate is provided with a positioning middle groove, and the positioning end groove and the positioning middle groove are respectively adapted to the top of the end air guide strips and the top of the middle air guide strips.

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