A vehicle mudguard and an off-highway dump truck
By designing a detachable elastic baffle and a bent secondary mudguard structure on off-highway dump trucks, the problem of fatigue of traditional mudguards is solved, vibration absorption and mud guidance are achieved, service life is extended and the protective effect is improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZOOMLION MINING MACHINERY (CHANGSHA) CO LTD
- Filing Date
- 2025-09-17
- Publication Date
- 2026-06-30
AI Technical Summary
Traditional off-highway dump truck mudguards are prone to fatigue damage due to the rigid connection that leads to vibration transmission, resulting in a short service life and limited protection range, making it difficult to effectively prevent mud from splashing from the sides of the tires.
A detachable mudguard structure is designed, which uses an elastic baffle plate that is flexibly connected to the vehicle frame. Combined with a bent secondary mudguard and a reinforcing structure, it absorbs vibration and guides mud flow, thus extending service life.
It effectively absorbs vibration, reduces fatigue stress, extends the service life of mudguards, improves protection, keeps vehicles clean, and reduces maintenance costs.
Smart Images
Figure CN224427583U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of off-highway dump truck technology, and in particular to a vehicle mudguard and an off-highway dump truck. Background Technology
[0002] Off-highway dump trucks are widely used in harsh environments such as mines and construction sites. During operation, the tires carry large amounts of mud, stones, and other debris, which are splashed onto the vehicle and the surrounding environment, seriously affecting the safety of the vehicle and its personnel, as well as the cleanliness of the working environment. Therefore, mudguards, as an important protective component of the vehicle, primarily function to block mud and gravel splashed from the tires, protecting critical vehicle components from mud damage and reducing pollution of the surrounding environment.
[0003] In related technologies, mudguards are generally fixed to the side of the vehicle frame using rigid connections (such as welding or direct bolting). When off-highway dump trucks travel on complex road conditions, the vibrations and impacts generated by the vehicle are directly transmitted to the mudguard body, causing fatigue damage, reducing service life, and increasing maintenance costs. Furthermore, traditional mudguards have limited coverage and are insufficient to effectively prevent mud splashing from the tire sides, resulting in inadequate protection. Utility Model Content
[0004] In view of this, the purpose of this utility model is to provide a vehicle mudguard that can absorb vibration and reduce fatigue stress acting on the mudguard body during the operation of off-highway dump trucks.
[0005] This utility model provides a vehicle mudguard for off-highway dump trucks, including a mudguard body and a bracket mounted on the mudguard body. The bracket is used to detachably connect the mudguard body to the side of the off-highway dump truck's frame. The mudguard also includes an elastic baffle plate disposed at one end of the mudguard body. The baffle plate is detachably connected to the front end of the off-highway dump truck's frame and is used to undergo elastic deformation during the operation of the off-highway dump truck to absorb vibration, thereby reducing the fatigue stress acting on the mudguard body.
[0006] In one embodiment, the mudguard body includes a main mudguard portion and secondary mudguard portions bent on both sides of the main mudguard portion. The main mudguard portion and the secondary mudguard portions together form a mudguard area surrounding the off-highway dump truck tire, thereby blocking mud and guiding mud to flow along the bending direction of the secondary mudguard portion.
[0007] In one embodiment, the mudguard body is an integrally formed arc-shaped plate structure, and the main mudguard part is provided with a reinforcing structure on the side near the tire to increase rigidity and provide sound insulation and absorption.
[0008] In one embodiment, the bracket includes a main body, a first mounting plate and a second mounting plate connected to the main body, the first mounting plate being used to connect the main body to the frame of an off-highway dump truck, and the second mounting plate being used to connect the main body to the mudguard body.
[0009] In one embodiment, the main body is a hollow tube structure, which includes a first tube segment and a second tube segment formed by bending one end of the first tube segment. The end of the first tube segment away from the second tube segment is recessed into the first mounting plate and is welded and fixedly connected to the first mounting plate along the circumferential direction of the second tube segment. The second tube segment passes through the second mounting plate and is fixedly connected to the second mounting plate.
[0010] In one embodiment, the second pipe segment is provided with a third mounting plate for mounting a work light, and the end of the second pipe segment away from the second pipe segment has a sealing plate.
[0011] In one embodiment, a plurality of reinforcing ribs are welded between the first pipe segment and the first mounting plate, and both the first mounting plate and the second mounting plate are provided with a plurality of mounting holes for inserting bolts for connection and weight reduction.
[0012] In one embodiment, the mudguard further includes a rain curtain disposed at the end of the mudguard body away from the shield.
[0013] In one embodiment, the mudguard further includes a pressure strip disposed at the connection between the rain curtain and the shield and the mudguard, the pressure strip being used to press the rain curtain and the shield onto the surface of the mudguard body to prevent them from warping.
[0014] This utility model also provides an off-highway dump truck, including a vehicle mudguard as described in the above embodiment.
[0015] This utility model provides a vehicle mudguard, which is detachably installed on the side of the frame of an off-highway dump truck via a bracket. An elastic baffle is provided at one end of the mudguard body, forming a flexible connection between the baffle and the front end of the frame. During the operation of the dump truck, it can undergo elastic deformation, effectively absorbing the vibration caused by road impact and tire splashes, thereby reducing the fatigue stress acting on the mudguard body, preventing cracking at the connection point, extending the service life of the mudguard body, and maintaining the mudguard's ability to block mud and sand. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is an overall structural diagram of a mudguard provided in a preferred embodiment of the present invention.
[0018] Figure 2 This is a schematic diagram of the mudguard body provided in a preferred embodiment of the present invention.
[0019] Figure 3 This is a schematic diagram of the structure of the bracket provided in a preferred embodiment of the present invention.
[0020] Figure label:
[0021] 1. Mudguard body; 2. Bracket; 3. Baffle plate; 4. Pressure strip; 5. Rain curtain; 6. Rubber strip; 11. Secondary mudguard part; 12. Main mudguard part; 21. Main body; 22. First mounting plate; 23. Second mounting plate; 24. Third mounting plate; 25. Sealing plate; 26. Rib plate. Detailed Implementation
[0022] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.
[0023] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.
[0024] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0025] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.
[0026] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.
[0027] Please refer to Figure 1 This utility model provides a vehicle mudguard for off-highway dump trucks, comprising a mudguard body 1 and a bracket 2 mounted on the mudguard body 1. The bracket 2 detachably connects the mudguard body 1 to the side of the off-highway dump truck's frame, facilitating quick replacement when the mudguard is damaged or requires repair, thus reducing maintenance workload. The mudguard also includes an elastic baffle 3 at one end of the mudguard body 1, detachably connected to the front end of the off-highway dump truck's frame. The baffle 3 is made of rubber or other materials with good elasticity and weather resistance, and can elastically deform under impact and vibration during vehicle operation, effectively absorbing vibrations caused by uneven road surfaces, tire impacts, and splashes, thus reducing the transmission of vibrations to the mudguard body 1. This structure significantly reduces fatigue stress acting on the front end of the mudguard body 1, preventing cracking or damage at the front connection point, thereby extending the mudguard's service life.
[0028] like Figure 2 As shown, the mudguard body 1 includes a main mudguard portion 12 and secondary mudguard portions 11 formed by bending outwards from both sides of the main mudguard portion 12. The main mudguard portion 12 and the secondary mudguard portions 11 spatially enclose a mudguard area surrounding the tires of the off-highway dump truck. This structure can effectively block mud and stones thrown out when the tires rotate during vehicle operation, reducing the adhesion of mud and sand to the vehicle frame and side components. The bent secondary mudguard portion 11 can also guide mud splashed onto it to flow down along the bending direction, preventing mud from accumulating on the surface of the mudguard, thereby reducing the weight increase caused by mud and sand adhesion and improving the overall cleanliness of the vehicle appearance. In addition, a reasonable bending angle can also improve the drainage path of mud and water, reducing secondary pollution to the frame and other components.
[0029] If the bending angle is too small, the secondary mudguard 11 will not extend laterally enough, failing to fully cover the tire sidewall, allowing mud and stones to easily fly off, thus weakening the mud-blocking effect. If the bending angle is too large, the secondary mudguard 11 will extend excessively outward, occupying the vehicle's lateral space and increasing the risk of contact with obstacles around the vehicle. Furthermore, a large bending angle will lengthen the path of mud flow along the mudguard, and some mud may splash along the outer edge, reducing the mud discharge control effect. Therefore, in this embodiment, the bending angle of the secondary mudguard 11 relative to the main mudguard 12 is selected to be 20°~45°, which ensures effective coverage of the tire sidewall and mud guidance by the secondary mudguard 11 without causing excessive lateral occupation of the vehicle's space or failure of mud discharge control.
[0030] In this embodiment, the mudguard body 1 is an integrally formed arc-shaped plate structure, arranged in an arc shape to fit and partially surround the outer contour of the off-highway dump truck's tires, which can reduce the occupation of wheel rotation space while ensuring coverage. The mudguard body 1 is made of modified PP material, which is resistant to high and low temperatures, impact from gravel, low temperature impact, and heat aging, and can effectively extend the service life of the mudguard.
[0031] Optionally, the main mudguard 12 has a reinforcing structure on the side near the tire to increase rigidity and provide sound insulation and absorption. This reinforcing structure consists of honeycomb or mesh-like grooves distributed along the inner surface of the mudguard body 1. The grooves significantly improve the overall rigidity and impact resistance of the mudguard body 1, preventing excessive deformation when impacted by flying stones. Simultaneously, the honeycomb-like internal cavities absorb some of the noise generated by the contact between the tire and the ground during vehicle operation, thus providing sound insulation and absorption. Furthermore, the shape and size of the mesh grooves can be modified to accommodate mudguards of different external dimensions.
[0032] Alternatively, the reinforcing structure can also be bent ribs or cross ribs, or it can be formed by local thickening or embedding elastic materials. The above materials can also improve the overall rigidity and impact resistance of the mudguard, and can also absorb vehicle running noise through cavities or composite materials to achieve sound insulation and sound absorption effects.
[0033] like Figure 3 As shown, the bracket 2 includes a main body 21, a first mounting plate 22 connected to the main body 21, and a second mounting plate 23. The first mounting plate 22 is used to connect the main body 21 to the frame of the off-highway dump truck so that the mudguard is securely installed on the side of the vehicle. The second mounting plate 23 is used to connect the main body 21 to the mudguard body 1, thereby forming a reliable connection interface between the bracket 2 and the mudguard body 1.
[0034] Specifically, the main body 21 is a hollow tube structure, including a first tube segment and a second tube segment formed by bending one end of the first tube segment. The end of the first tube segment away from the second tube segment is recessed into the first mounting plate 22 and welded and fixed along the circumference of the first tube segment, forming a high-strength fixed connection between the first tube segment and the first mounting plate 22, thereby enhancing the stability of the bracket 2 when bearing the weight of the mudguard and external impacts. The second tube segment passes through the second mounting plate 23 and is fixedly connected to the second mounting plate 23 by welding. A rubber strip 6 is also provided at the connection point to protect the external electrical wiring harness and prevent it from being scratched by sharp metal edges. The above-mentioned structure formed by bending can not only adapt to the installation position requirements of the mudguard, but also help to reduce the overall size of the bracket 2, leaving space for the arrangement of other components on the side of the vehicle.
[0035] In addition, the internal space of the hollow tube structure can be used to lay electrical wiring, such as power cables for work lights or sensor signal lines, which can reduce the length of exposed cables while protecting the wiring and reducing the risk of cable damage.
[0036] Optionally, the second pipe section is provided with a third mounting plate 24 for installing a work light. The third mounting plate 24 is fixed to the outside of the second pipe section by welding, so that the work light can be stably installed on the side of the vehicle at the required position to provide illumination at night or in low-light mining environments. A sealing plate 25 is provided at the end of the second pipe section away from the first pipe section. The sealing plate 25 is fixed to the port of the second pipe section by welding to seal the port of the hollow pipe structure, preventing mud, water and other debris from entering the pipe, thereby protecting any electrical wiring that may be installed inside and extending the service life of the support 2 and the wiring.
[0037] In this embodiment, multiple stiffening plates 26 are welded between the first pipe section and the first mounting plate 22. These stiffening plates 26 are spaced apart circumferentially along the first pipe section to reinforce the connection between the first pipe section and the first mounting plate 22, improving the structural strength of this location under vehicle vibration and mud impact, and preventing weld cracking due to fatigue stress concentration. Both the first mounting plate 22 and the second mounting plate 23 have multiple mounting holes. These holes not only allow for the insertion of bolts to achieve detachable fixing of the mudguard, but also reduce the weight of the plates without affecting the connection strength, thereby reducing the overall weight of the bracket 2 and facilitating installation and maintenance.
[0038] Optionally, the mudguard also includes a rain curtain 5 disposed at the end of the mudguard body 1 away from the baffle 3. The rain curtain 5 may be made of flexible rubber material or other elastic materials with good wear resistance and low-temperature resistance. During vehicle operation, the rain curtain 5 can swing to a certain extent with the rotation of the tires, effectively blocking mud, water and gravel thrown out from the rear of the tires, preventing them from directly impacting the rear of the vehicle or other targets on the road.
[0039] Optionally, the mudguard also includes a pressure strip 4 disposed at the connection between the rain curtain 5 and the shield 3 and the mudguard body 1. The pressure strip 4 is arranged along the connection edge and simultaneously presses the rain curtain 5 and the shield 3 onto the surface of the mudguard body 1 by bolts or rivets. During installation, the pressure strip 4 applies a uniform clamping force to the rain curtain 5 and the shield 3, which can effectively prevent them from warping, deforming or loosening due to airflow impact or vibration during vehicle operation, thereby maintaining good sealing and shielding effect.
[0040] This utility model embodiment also provides an off-highway dump truck, including a vehicle mudguard as described in the above embodiment.
[0041] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0042] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.
Claims
1. A vehicle mudguard for off-highway dump trucks, characterized in that, It includes a mudguard body (1) and a bracket (2) mounted on the mudguard body (1), the bracket (2) being used to detachably connect the mudguard body (1) to the side of the frame of the off-highway dump truck; The mudguard also includes an elastic baffle plate (3) disposed at one end of the mudguard body (1). The baffle plate (3) is detachably connected to the front end of the off-highway dump truck frame and is used to undergo elastic deformation during the operation of the off-highway dump truck to absorb vibration, thereby reducing the fatigue stress acting on the mudguard body (1).
2. The mudguard as described in claim 1, characterized in that, The mudguard body (1) includes a main mudguard (12) and a secondary mudguard (11) bent on both sides of the main mudguard (12). The main mudguard (12) and the secondary mudguard (11) together form a mudguard area surrounding the off-highway dump truck tire, thereby blocking the mud and guiding the mud to flow along the bending direction of the secondary mudguard (11).
3. The mudguard as described in claim 2, characterized in that, The mudguard body (1) is an integrally formed arc-shaped plate structure, and the main mudguard part (12) has a reinforcing structure on the side near the tire to increase rigidity and sound insulation.
4. The mudguard as described in claim 2, characterized in that, The bracket (2) includes a main body (21), a first mounting plate (22) and a second mounting plate (23) connected to the main body (21). The first mounting plate (22) is used to connect the main body (21) to the frame of the off-highway dump truck, and the second mounting plate (23) is used to connect the main body (21) to the mudguard body (1).
5. The mudguard as described in claim 4, characterized in that, The main body (21) is a hollow tube structure, which includes a first tube segment and a second tube segment formed by bending one end of the first tube segment. The end of the first tube segment away from the second tube segment is sunk into the first mounting plate (22) and welded and fixedly connected to the first mounting plate (22) along the circumferential direction of the second tube segment. The second tube segment passes through the second mounting plate (23) and is fixedly connected to the second mounting plate (23).
6. The mudguard as described in claim 5, characterized in that, The second pipe section is provided with a third mounting plate (24) for installing a work light, and the end of the second pipe section away from the second pipe section has a sealing plate (25).
7. The mudguard as described in claim 5, characterized in that, Multiple reinforcing ribs (26) are welded between the first pipe section and the first mounting plate (22) for reinforcement connection. Both the first mounting plate (22) and the second mounting plate (23) have multiple mounting holes for inserting bolts for connection and weight reduction.
8. The mudguard as described in claim 1, characterized in that, The mudguard also includes a rain curtain (5) disposed at one end of the mudguard body (1) away from the shield (3).
9. The mudguard as described in claim 8, characterized in that, The mudguard also includes a pressure strip (4) disposed at the connection between the rain curtain (5) and the shield (3) and the mudguard. The pressure strip (4) is used to press the rain curtain (5) and the shield (3) onto the surface of the mudguard body (1) to prevent them from warping.
10. An off-highway dump truck, characterized in that, Including a vehicle mudguard as described in any one of claims 1-9.