Front protection device for off-highway dump truck

Abstract

The utility model provides a front protection device for off -highway dump truck, skeleton is fixed on the inner wall of front panel and forms the protection body with front panel and covers the radiator in the inside, both ends of protection body are equipped with connecting arm, one side arm of connecting arm is same with the inboard shape of one end of protection body and is fixedly connected, the other side arm of connecting arm extends to the direction of car body, and the both ends of two side arms of connecting arm are detachably fixed with the car body.

Description

Technical Field

[0001] This utility model belongs to the field of engineering machinery technology, specifically relating to a front protection device for off-highway dump trucks. Background Technology

[0002] Off-highway dump trucks are core transportation equipment in heavy-duty operations such as mining and infrastructure construction. Their operating environment is characterized by rugged roads, scattered gravel, and numerous obstacles. In complex mining conditions, vehicles are prone to scraping or colliding with loose rocks, protruding objects on slopes, or other operating equipment. As a key component of the vehicle's cooling system, the radiator directly affects the normal operation of the engine. Damage to the radiator can lead to vehicle downtime, causing serious production delays and high repair costs. Therefore, effective protection for the radiator is necessary through a front protective device.

[0003] Currently, the radiator front protection structure of some off-highway dump trucks adopts a single steel plate design. Although it has a basic shielding function, it has revealed many technical defects in practical applications: 1) The thickness of the protective steel plate is generally too thin. When encountering medium-to-high intensity collisions or scrapes during mining operations, the steel plate is prone to severe plastic deformation and cannot withstand the direct impact of external forces on the radiator, resulting in insufficient protection reliability; 2) The connecting bracket between the steel plate and the frame is designed to be too long, resulting in insufficient overall structural rigidity. When the vehicle is traveling on bumps or under collision loads, stress concentration at the welded parts of the bracket is prominent. After long-term use, problems such as weld cracking and bracket breakage are likely to occur, thus losing the protective function. Even the detached protective components may cause secondary damage to other structures of the vehicle. The above-mentioned structural defects of the existing protective devices make the radiator still face a high risk of damage, seriously affecting the operational stability and service life of off-highway dump trucks. Therefore, it is necessary to improve these issues. Utility Model Content

[0004] The technical problem solved by this utility model is to provide a front protective device for off-highway dump trucks. The device adopts a protective body with a frame set on the front panel, which greatly improves the strength of the protective structure itself and effectively avoids damage to the radiator during collision. It uses a connecting arm that is adapted to and fixed to the inner end of the protective body on one side to connect with the vehicle body, reducing the extension length of the connecting arm and improving the overall rigidity of the protective structure. This solves the problems of insufficient protection reliability and poor structural rigidity of existing protective structures, improves the protection effect on the radiator, enhances structural stability, extends the service life of the device, and ensures the continuous operation of off-highway dump trucks.

[0005] The technical solution adopted by this utility model is: a front protection device for off-highway dump trucks, including a front panel and a frame located outside the radiator. The frame is fixed to the inner wall of the front panel and forms a protective body that covers the radiator inside the front panel. Both ends of the protective body are provided with connecting arms. One side of the connecting arm has the same shape as the inner side of one end of the protective body and is fixedly connected. The other side of the connecting arm extends to the vehicle body direction, and the ends of both sides of the connecting arm are detachably fixedly connected to the vehicle body.

[0006] The front panel is a V-shaped structure with an included angle greater than 90° and a protective grille with several ventilation holes on its surface.

[0007] Furthermore, the frame includes two side crossbeams and a middle crossbeam located between the two side crossbeams. Two oblique longitudinal beams are fixed on both sides of the middle crossbeam and are respectively fixedly connected to the corresponding side crossbeams. The reinforcing ribs located inside the connecting arm are fixedly connected to the corresponding ends of the two side crossbeams and the middle crossbeam. Both ends of the two side crossbeams are fixed with shaft heads with internal threads. The end of one side of the connecting arm and the connecting parts of both sides of the connecting arm are respectively detachably fixed to the shaft heads at the corresponding positions by bolts.

[0008] Furthermore, the side beams, middle beams, and diagonal beams are all rectangular tubes.

[0009] Furthermore, one side of the connecting arm is a V-shaped structure with the same shape as the end of the inner wall of the front panel, and the other side of the connecting arm is a straight rod extending towards the vehicle body.

[0010] Furthermore, both ends of the connecting arm are fixed with L-shaped plate seats, and the L-shaped plate seats are detachably and fixed to the vehicle body by bolts.

[0011] Advantages of this utility model compared to the prior art: 1. This technical solution adopts a V-shaped protective body with a frame on the front panel. The frame forms a stable support structure through side beams, middle beams, diagonal beams and reinforcing ribs. The rectangular tube material further improves the overall rigidity, effectively resisting medium and high intensity collisions and scratches, avoiding direct damage to the radiator, effectively dispersing the impact force, enhancing the deformation resistance, and setting several ventilation holes on the front panel, which is not only aesthetically pleasing but also reduces the risk of stones damaging the radiator, improves the protection capability, and protects the radiator while improving the heat dissipation effect. 2. The connecting arm of this technical solution adopts a segmented design. One side of the arm is fitted and fixed to the protective body, and the ends of both sides of the arm are detachably connected to the vehicle body through L-shaped plate seats. This reduces the extension length of the connecting arm, shortens the force transmission path, and reduces stress concentration. The bolt connection method facilitates the installation, disassembly, and maintenance of the connecting arm and the protective body. This not only makes the weight less than that of traditional brackets, but also avoids the problems of cracking and breakage of welded brackets, reduces the risk of protective components falling off, and eliminates secondary damage. 3. This technical solution solves the problems of insufficient protection reliability and poor structural rigidity of existing protective structures, improves the protection effect on radiators, enhances structural stability, extends the service life of the device, ensures the continuity of operation of off-highway dump trucks, has a simple structure, novel design, strong practicality, and meets the protection needs of dump trucks. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the planar structure of this utility model; Figure 3 This is a schematic diagram of the connecting arm structure of this utility model. Detailed Implementation

[0013] The following will refer to the embodiments of this utility model. Figure 1-3 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0014] It should be noted that, unless otherwise stated herein, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention and simplifying the description, 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0015] In this document, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0016] Front guards for off-highway dump trucks, such as Figure 1-2As shown, the structure includes a front panel 1 and a frame 2 located outside the radiator. The frame 2 is fixed to the inner wall of the front panel 1 and forms a protective body that covers the radiator. Both ends of the protective body are provided with connecting arms 3. One side of the connecting arm 3 is the same shape as the inner side of one end of the protective body and is fixedly connected. The other side of the connecting arm 3 extends to the vehicle body, and the ends of both sides of the connecting arm 3 are detachably fixed to the vehicle body. In the above structure, the protective body with the frame 2 set on the front panel 1 significantly improves the strength of the protective structure itself and effectively avoids damage to the radiator during collision. The connecting arm 3, which is adapted to and fixed to the inner end of the protective body on one side, is connected to the vehicle body, reducing the extension length of the connecting arm and improving the overall rigidity of the protective structure. This solves the problems of insufficient protection reliability and poor structural rigidity of existing protective structures, improves the protection effect on the radiator, enhances structural stability, extends the service life of the device, and ensures the continuity of operation of off-highway dump trucks.

[0017] The front panel 1 is a V-shaped structure with an included angle greater than 90° and a protective grille with several ventilation holes on the panel surface, which not only ensures smooth heat dissipation of the radiator, but also blocks the impact of debris such as gravel.

[0018] like Figure 2 As shown, the specific structure of the frame 2 is as follows: The frame 2 includes two side beams 2-1 and a middle beam 2-2 located between the two side beams 2-1. Two oblique longitudinal beams 2-3 are fixed on both sides of the middle beam 2-2 and are respectively fixedly connected to the corresponding side beams 2-1. The reinforcing ribs 2-4 located inside the connecting arm 3 are fixedly connected to the corresponding ends of the two side beams 2-1 and the middle beam 2-2, so that the oblique longitudinal beams 2-3, the middle beam 2-2 and the side beams 2-1 form a triangular stable structure, which is beneficial to improving the overall structural strength of the frame 2. Both ends of the two side beams 2-1 are fixed with shaft heads 2-5 with internal threads. The end of one arm of the connecting arm 3 and the connecting parts of the two arms of the connecting arm 3 are respectively fixed to the shaft heads 2-5 at the corresponding positions by bolts. Specifically, the side beams 2-1, the middle beams 2-2 and the oblique longitudinal beams 2-3 are all rectangular tubes.

[0019] like Figure 3As shown, the connecting arm 3 is specifically designed as follows: one side of the connecting arm 3 is a V-shaped structure with the same shape as the inner wall end of the front panel 1, further enhancing the end support strength, and the other side of the connecting arm 3 is a straight rod extending towards the vehicle body; specifically, both ends of the connecting arm 3 are fixed with L-shaped plate seats 4, and the L-shaped plate seats 4 are detachably fixed to the vehicle body by bolts; in the above structure, the connecting arm 3 adopts a segmented design, one side of the arm is adapted and fixed to the protective body, and the ends of both sides of the arm are detachably connected to the vehicle body by L-shaped plate seats 4, which reduces the extension length of the connecting arm 3, shortens the force transmission path, and reduces stress concentration; the bolt connection method facilitates the installation, disassembly, and maintenance of the connecting arm 3 and the protective body, making the weight less than that of traditional brackets, while avoiding the problems of easy cracking and breakage of welded brackets, reducing the risk of protective components falling off, and eliminating secondary damage.

[0020] During installation, the frame 2 is first welded and fixed to the inner wall of the front panel 1 to form a protective body; then, the shaft head 2-5 at the corresponding position of the end of the connecting arm 3 is connected to the shaft head 2-5 at the end of the protective body by bolts, and the shaft head 2-5 at the corresponding position of the end of the connecting arm 3 is connected to the end of the protective body by bolts. Finally, the connecting arm 3 is fixedly connected to the vehicle body through the L-shaped plate seat 4 at both ends, so that the protective body completely covers the outside of the radiator and maintains a necessary safe distance from the radiator to avoid interference during vibration.

[0021] This technical solution addresses the issues of insufficient reliability and poor rigidity in existing protective structures, improves the protection effect on radiators, enhances structural stability, extends the service life of the device, ensures the continuity of off-highway dump truck operations, has a simple structure, novel design, strong practicality, and meets the protection requirements of dump trucks.

[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A front protective device for off-highway dump trucks, characterized in that: Includes a front panel (1) and a frame (2) located outside the radiator. The frame (2) is fixed to the inner wall of the front panel (1) and forms a protective body that covers the radiator inside the front panel (1). Both ends of the protective body are provided with connecting arms (3). One side of the connecting arm (3) has the same shape as the inner side of one end of the protective body and is fixedly connected. The other side of the connecting arm (3) extends to the direction of the vehicle body, and the ends of both sides of the connecting arm (3) are detachably fixedly connected to the vehicle body.

2. The front protective device for off-highway dump trucks according to claim 1, characterized in that: The front panel (1) is a V-shaped structure with an included angle greater than 90° and a protective grille with several ventilation holes on the panel surface.

3. The front protective device for off-highway dump trucks according to claim 1, characterized in that: The frame (2) includes two side beams (2-1) and a middle beam (2-2) located between the two side beams (2-1). Two oblique longitudinal beams (2-3) are fixed on both sides of the middle beam (2-2) and are respectively fixedly connected to the side beams (2-1) on the corresponding sides. The reinforcing rib (2-4) located inside the connecting arm (3) is fixedly connected to the corresponding ends of the two side beams (2-1) and the middle beam (2-2). Both ends of the two side beams (2-1) are fixed with shaft heads (2-5) with internal threads. The end of one side arm of the connecting arm (3) and the connecting parts of the two sides of the connecting arm (3) are respectively fixedly connected to the shaft heads (2-5) at the corresponding positions by bolts.

4. The front protective device for off-highway dump trucks according to claim 3, characterized in that: The side beams (2-1), middle beams (2-2), and diagonal beams (2-3) are all rectangular tubes.

5. The front protective device for off-highway dump trucks according to claim 2, characterized in that: One side of the connecting arm (3) is a V-shaped structure with the same shape as the inner wall end of the front panel (1), and the other side of the connecting arm (3) is a straight rod extending towards the vehicle body.

6. The front protective device for off-highway dump trucks according to claim 4, characterized in that: The connecting arm (3) has an L-shaped plate seat (4) fixed at both ends of its arms, and the L-shaped plate seat (4) is detachably and fixed to the vehicle body by bolts.

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