A highly adaptable detachable semi-trailer mudguard
By installing adjustment components and self-locking plugs, the design solves the problems of poor adaptability and inconvenient maintenance of traditional semi-trailer mudguards, realizing flexible adjustment and stable fixation of mudguards and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG SIMIER INTELLIGENT TECH CO LTD
- Filing Date
- 2025-08-12
- Publication Date
- 2026-05-26
AI Technical Summary
Traditional semi-trailer mudguards have poor adaptability, are inconvenient to maintain, and have a simple structure that cannot be flexibly adjusted, resulting in high application flexibility and maintenance costs.
The system employs an installation and adjustment assembly, including a suspension arm, mounting base, adjustable clamps, and self-locking inserts. Through rotation and a multi-dimensional locking structure, it enables flexible adjustment and quick disassembly of the mudguard, improving adaptability and ease of maintenance.
It enables the mudguard to be rotated and adjusted to adapt to different vehicle models and operating conditions, avoiding loosening caused by vibration and reducing maintenance costs and time.
Smart Images

Figure CN224277319U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of semi-trailer parts technology, specifically a highly adaptable detachable semi-trailer mudguard. Background Technology
[0002] As a core component of road transport, the mudguards of semi-trailers primarily function to shield the vehicle body and cargo from mud, water, and gravel kicked up by the wheels. Traditional semi-trailer mudguards are typically fixed to the frame or suspension system using methods such as welding or direct bolting. Once fixed, their position is not adjustable, leading to the following problems:
[0003] Poor adaptability: For different vehicle types (such as flatbed semi-trailers and box semi-trailers) and different working conditions (such as transporting coal, sand and gravel, and containers), the fixed mudguards cannot be adapted to the above situations at the same time, resulting in poor application flexibility.
[0004] Inconvenient maintenance: Mudguards are prone to aging and deformation when exposed to mud, sand and rainwater for a long time, and need to be disassembled and replaced regularly. However, traditional fixed connection methods (such as multiple bolt fixation) are time-consuming and laborious to disassemble.
[0005] Simple structure: The position cannot be flexibly adjusted according to actual needs (such as adjusting the mudguard angle), thus limiting its functionality. Utility Model Content
[0006] The first technical problem this utility model aims to solve is to provide a highly adaptable detachable semi-trailer mudguard. Through the innovative design of the installation and adjustment components, the mudguard can be flexibly adjusted in position by rotation after installation and supports quick disassembly, thereby improving adaptability (flexibility) and maintenance convenience, and meeting the usage needs under different working conditions.
[0007] To achieve the above objectives, the present invention adopts the following technical solution:
[0008] A highly adaptable detachable semi-trailer mudguard includes a mudguard body and an installation and adjustment assembly that connects the semi-trailer to the mudguard body. The installation and adjustment assembly includes a suspension arm, a mounting seat fixed to the mudguard body, and an adjustable clamp fitted onto the suspension arm and used in conjunction with the mounting seat. The mounting seat has an adjustment groove that is concentrically arranged with the mudguard body and extends circumferentially along the mudguard body. The left end of the adjustable clamp is connected to a limiting block that slides and is always confined within the adjustment groove. The right end of the adjustable clamp passes through a self-locking bolt that is confined within the adjustment groove from bottom to top. Above the self-locking bolt is a self-locking nut that locks the adjustable clamp onto the suspension arm.
[0009] By adopting the above solution, the mudguard can rotate forward or backward around the tire through the adjustment groove on the mounting base and the limiting block on the adjustable clamp, thus adapting to different vehicle models (such as flatbed semi-trailers and box semi-trailers) and different working conditions (such as transporting coal, sand and gravel, and containers), and its adaptability (flexibility) is higher. When replacing the mudguard, the mudguard can be directly disassembled along the length of the suspension arm for easy maintenance and replacement in the future, and the maintenance cost is low.
[0010] As a preferred embodiment of a highly adaptable detachable semi-trailer mudguard, at least two sets of installation and adjustment components are provided. All installation and adjustment components are distributed in a circumferential array along the outer side of the mudguard body. Through the coordinated action of multiple sets of installation and adjustment components, the positional accuracy and structural stability of the mudguard during rotation adjustment are improved.
[0011] As a preferred embodiment of a highly adaptable detachable semi-trailer mudguard, at least two sets of mounting seats and adjustable clamps are provided. All mounting seats and adjustable clamps are linearly arrayed along the length of the suspension arm to further distribute the weight of the mudguard and avoid local stress concentration.
[0012] As a preferred embodiment of a highly adaptable detachable semi-trailer mudguard, the mounting and adjusting assembly also includes a flange (such as a round or triangular metal disc) connected to the rear end of the suspension arm; the flange is fixed to the side of the semi-trailer (such as the frame longitudinal beam or suspension bracket) by multiple positioning bolts and positioning nuts, thereby realizing the detachable connection between the mounting and adjusting assembly and the semi-trailer.
[0013] As a preferred embodiment of a highly adaptable detachable semi-trailer mudguard, the two ends of the mounting base are fixed to the outside of the mudguard body (such as the position of the reinforcing rib on the back of the mudguard) by positioning bolts and positioning nuts, ensuring the connection strength between the mounting base and the mudguard body.
[0014] The second technical problem to be solved by this utility model is to provide a highly adaptable detachable semi-trailer mudguard, which achieves dual-dimensional locking through the cooperation of mounting holes and self-locking plugs, preventing the adjusting clamp from loosening or falling off due to vibration during driving.
[0015] To achieve the above objectives, the present invention adopts the following technical solution:
[0016] Based on the above scheme, the installation adjustment component also includes mounting holes arranged linearly along the length of the suspension arm and penetrating through the suspension arm, a self-locking plug inserted into two adjacent mounting holes and locking the adjustable clamp along the length of the suspension arm, and a second self-locking nut assembled below the self-locking plug and locking the adjustable clamp; wherein the self-locking plug is an N-shaped plug, an anti-deviation locking block is connected above the adjustable clamp, an anti-deviation locking hole is opened on the surface of the anti-deviation locking block, and an anti-deviation locking core extending into the anti-deviation locking hole is connected in the middle of the self-locking plug.
[0017] By adopting the above solution, the sliding of the adjustable clamp along the axial direction of the suspension arm can be restricted through the cooperation of the mounting hole and the self-locking plug. The self-locking nut restricts circumferential rotation, achieving dual-dimensional locking and preventing the adjustable clamp from loosening or falling off due to vibration during driving.
[0018] As a preferred embodiment of a highly adaptable detachable semi-trailer mudguard, the anti-deviation lock core has a frustum head or a conical head, and the anti-deviation lock hole is a cylindrical groove; or the anti-deviation lock core has a cylindrical head, and the anti-deviation lock hole is a frustum groove or a conical groove. Through the cooperation of the anti-deviation lock core and the anti-deviation lock hole, the self-locking insert can be prevented from wobbling within the mounting hole, while simultaneously limiting the radial offset of the adjustable clamp relative to the suspension arm, ensuring accurate positioning after adjustment.
[0019] The beneficial effects of this utility model are:
[0020] 1. Flexible rotation adjustment and strong adaptability: Through the adjustment groove on the mounting base and the limit block on the adjustable clamp, the mudguard can rotate forward or backward around the tire, thus adapting to different vehicle models (such as flatbed semi-trailers and box semi-trailers) and different working conditions (such as transporting coal, sand and gravel, and containers), making it more adaptable (flexible).
[0021] 2. Multi-dimensional locking stability: The self-locking nut restricts the circumferential rotation of the adjustable clamp, the cooperation between the mounting hole and the self-locking plug restricts the sliding of the adjustable clamp along the axial direction of the suspension arm, the anti-deviation lock core and the anti-deviation lock hole restrict radial displacement, and the triple locking structure ensures that the position is stable after adjustment and avoids loosening caused by vibration during driving.
[0022] 3. Quick disassembly and maintenance: When replacing the mudguard, the mudguard can be disassembled as a whole along the length of the suspension arm for easy maintenance and replacement in the future, resulting in low maintenance costs. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 A three-dimensional structure for highly adaptable detachable semi-trailer mudguards Figure 1 ;
[0025] Figure 2 A three-dimensional structure for highly adaptable detachable semi-trailer mudguards Figure 2 ;
[0026] Figure 3 The three-dimensional structure for installing the adjustment components in Embodiment 1 Figure 1 ;
[0027] Figure 4 The three-dimensional structure for installing the adjustment components in Embodiment 1 Figure 2 ;
[0028] Figure 5 for Figure 4 A magnified view of a section at point A in the middle;
[0029] Figure 6 This is a three-dimensional structural diagram of the installation and adjustment components in Embodiment 2;
[0030] Figure 7 for Figure 6 Partial 3D structural diagram;
[0031] Figure 8 This is a three-dimensional structural diagram of the adjustable clamp in Example 2;
[0032] Figure 9 This is a three-dimensional structural diagram of the self-locking plug-in in Example 2;
[0033] Figure 10 This is a three-dimensional structural diagram of the adjustable clamp in Example 3;
[0034] Figure 11 This is a three-dimensional structural diagram of the self-locking plug-in in Example 3;
[0035] Markings in the diagram: 1-Mudguard body; 2-Installation and adjustment components; 201-Suspension arm; 202-Mounting base; 203-Adjustable clamp; 204-Adjustment groove; 205-Limit block; 206-Self-locking bolt; 207-Self-locking nut one; 208-Flange; 209-Positioning bolt one; 210-Positioning nut one; 211-Positioning bolt two; 212-Positioning nut two; 213-Mounting hole; 214-Self-locking insert; 215-Self-locking nut two; 216-Anti-deviation locking block; 217-Anti-deviation locking hole; 218-Anti-deviation locking core. Detailed Implementation
[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0037] Example 1, as Figures 1 to 5As shown, a highly adaptable detachable semi-trailer mudguard is provided, including a mudguard body 1 and an installation and adjustment assembly 2 that connects the semi-trailer to the mudguard body 1. The installation and adjustment assembly 2 includes a suspension arm 201, a mounting seat 202 fixed on the mudguard body 1, and an adjustable clamp 203 fitted on the suspension arm 201 and used in conjunction with the mounting seat 202. The mounting seat 202 has an adjustment groove 204 that is concentrically arranged with the mudguard body 1 and opened circumferentially along the mudguard body 1. The left end of the adjustable clamp 203 is connected to a limiting block 205 that slides and is always limited within the adjustment groove 204. The right end of the adjustable clamp 203 passes through a self-locking bolt 206 that is limited within the adjustment groove 204 from bottom to top. A self-locking nut 207 is fitted above the self-locking bolt 206 to lock the adjustable clamp 203 onto the suspension arm 201. By cooperating with the adjusting groove 204 on the mounting base 202 and the limiting block 205 on the adjustable clamp 203, the mudguard can rotate forward or backward around the tire, thus adapting to different vehicle models (such as flatbed semi-trailers and box semi-trailers) and different working conditions (such as transporting coal, sand and gravel, and containers), making it more adaptable (flexible). When replacing the mudguard, the mudguard can be directly disassembled along the length of the suspension arm 201 for easy maintenance and replacement in the future, resulting in low maintenance costs.
[0038] like Figures 3 to 4 As shown, there are two sets of installation and adjustment components 2. The two sets of installation and adjustment components 2 are arranged in a circumferential array along the outer side of the mudguard body 1. Through the coordinated action of the two sets of installation and adjustment components 2, the positional accuracy and structural stability of the mudguard during rotation adjustment are improved.
[0039] Continue as Figures 3 to 4 As shown, there are two sets of mounting base 202 and adjustable clamp 203. The two sets of mounting base 202 and adjustable clamp 203 are linearly arrayed along the length of the suspension arm 201 to further distribute the weight of the mudguard and avoid local stress concentration.
[0040] like Figure 3 As shown, the mounting adjustment assembly 2 also includes a flange 208 (triangular metal plate) connected to the rear end of the suspension arm 201; the flange 208 is fixed to the side of the semi-trailer (frame longitudinal beam) by multiple positioning bolts 209 and positioning nuts 210, so as to realize the detachable connection between the mounting adjustment assembly 2 and the semi-trailer.
[0041] Continue as Figure 3 As shown, the two ends of the mounting base 202 are fixed to the outside of the mudguard body 1 (the position of the back reinforcing rib of the mudguard) by positioning bolts 211 and positioning nuts 212, to ensure the connection strength between the mounting base 202 and the mudguard body 1.
[0042] Example 2, as Figures 6 to 7As shown, the difference between this embodiment and Embodiment 1 is only that, based on Embodiment 1, the installation adjustment assembly 2 further includes mounting holes 213 arranged linearly along the length of the suspension arm 201 and penetrating through the suspension arm 201, a self-locking plug 214 inserted into two adjacent mounting holes 213 and locking the adjustable clamp 203 along the length of the suspension arm 201, and a self-locking nut 215 assembled below the self-locking plug 214 and locking the adjustable clamp 203; wherein the self-locking plug 214 is an N-shaped plug, an anti-deviation locking block 216 is connected above the adjustable clamp 203, an anti-deviation locking hole 217 is opened on the surface of the anti-deviation locking block 216, and an anti-deviation locking core 218 extending into the anti-deviation locking hole 217 is connected in the middle of the self-locking plug 214. By cooperating with the mounting hole 213 and the self-locking plug 214, the sliding of the adjustable clamp 203 along the axial direction of the suspension arm 201 can be restricted. With the cooperation of the self-locking nut 207, circumferential rotation is restricted, achieving dual-dimensional locking and preventing the adjustable clamp from loosening or falling off due to vibration during driving.
[0043] like Figures 8 to 9 As shown, the anti-deviation lock cylinder 218 has a cylindrical head, and the anti-deviation lock hole 217 has a frustum groove, although it could also be a conical groove. The cooperation between the anti-deviation lock cylinder 218 and the anti-deviation lock hole 217 prevents the self-locking insert 214 from wobbling within the mounting hole 213, while also limiting the radial offset of the adjustable clamp 203 relative to the suspension arm 201, ensuring accurate positioning after adjustment.
[0044] Example 3, as Figures 10 to 11 As shown, the difference between this embodiment and Embodiment Two is only that, based on Embodiment Two, the anti-deviation lock cylinder 218 is replaced with a frustum head (or conical head) instead of a cylindrical head; and the anti-deviation lock hole 217 is replaced with a cylindrical groove instead of a frustum groove. Through the cooperation of the anti-deviation lock cylinder 218 and the anti-deviation lock hole 217, the self-locking insert 214 can be prevented from shaking within the mounting hole 213, while simultaneously limiting the radial offset of the adjustable clamp 203 relative to the suspension arm 201, ensuring accurate positioning after adjustment.
[0045] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A highly adaptable detachable semi-trailer mudguard, comprising a mudguard body and an installation and adjustment assembly that connects the semi-trailer to the mudguard body simultaneously; characterized in that The installation and adjustment assembly includes a suspension arm, a mounting base fixed to the mudguard body, and an adjustable clamp fitted onto the suspension arm and used in conjunction with the mounting base. The mounting base has an adjustment groove that is concentric with the mudguard body and extends circumferentially along the mudguard body. The left end of the adjustable clamp is connected to a limiting block that slides and is always confined within the adjustment groove. The right end of the adjustable clamp passes through a self-locking bolt that is confined within the adjustment groove from bottom to top. Above the self-locking bolt is a self-locking nut that locks the adjustable clamp onto the suspension arm.
2. The demountable semi-trailer fender of high adaptability according to claim 1, characterized in that: At least two sets of the installation and adjustment components are provided, and all installation and adjustment components are distributed in a circumferential array along the outer side of the mudguard body.
3. The demountable semi-trailer fender of high adaptability according to claim 1, characterized in that: At least two sets of the mounting bases and adjustable clamps are provided, and all mounting bases and adjustable clamps are distributed in a linear array along the length of the suspension arm.
4. The demountable semi-trailer fender of high adaptability according to claim 1, characterized in that: The installation adjustment assembly also includes mounting holes arranged linearly along the length of the suspension arm and extending through the suspension arm; a self-locking plug inserted into two adjacent mounting holes to lock the adjustable clamp along the length of the suspension arm; and a self-locking nut mounted below the self-locking plug to lock the adjustable clamp.
5. The demountable semi-trailer fender of high adaptability according to claim 4, characterized in that: An anti-deviation locking block is connected above the adjustable clamp. An anti-deviation locking hole is opened on the surface of the anti-deviation locking block. An anti-deviation locking core that extends into the anti-deviation locking hole is connected in the middle of the self-locking plug.
6. The highly adaptable detachable semi-trailer mudguard according to claim 5, characterized in that: The anti-deviation lock core is a frustum head or a conical head, and the anti-deviation lock hole is a cylindrical groove.
7. The highly adaptable detachable semi-trailer mudguard according to claim 5, characterized in that: The anti-deviation lock core is a cylindrical head, and the anti-deviation lock hole is a frustum groove or a conical groove.
8. The highly adaptable detachable semi-trailer mudguard according to claim 4, characterized in that: The self-locking plug-in is an N-shaped plug-in.
9. The highly adaptable detachable semi-trailer mudguard according to claim 1, characterized in that: The mounting and adjusting assembly also includes a flange connected to the rear end of the suspension arm; the flange is fixed to the side of the semi-trailer by a plurality of positioning bolts and positioning nuts.
10. The highly adaptable detachable semi-trailer mudguard according to claim 1, characterized in that: The mounting base is fixed to the outside of the mudguard body by two positioning bolts and two positioning nuts at both ends.