Rear protection device and vehicle

Abstract

The utility model relates to a rear protection device and a vehicle. The rear protection device comprises a mounting frame and an anti-collision frame, the mounting frame comprises a bearing part and a mounting part, the mounting part is provided with a first end and a second end which are oppositely arranged, the first end is connected with the bearing part, the second end is connected with the anti-collision frame, and the mounting part is gradually narrowed in the direction from the first end to the second end; the direction parallel to the first end towards the second end is the first direction, the bearing part is vertically arranged in the first direction, and the side, away from the mounting part, of the bearing part is detachably connected with the vehicle body. Through the arrangement, the bearing part and the mounting part are connected to form a structure with a wide upper part and a narrow lower part, on one hand, the manufacturing difficulty and the manufacturing cost are reduced, on the other hand, the structure with the wide upper part and the narrow lower part has high stability and impact resistance, and the protection performance of the rear protection device is improved. And the bearing part is detachably connected with the vehicle body, so that the rear protection device and the vehicle body are easy to assemble, the flexibility is high, and subsequent quality detection and maintenance are facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of dump trucks, and in particular to a rear protection device and a vehicle. Background Art

[0002] Dump trucks are mainly used in real estate development, urban infrastructure, mining transportation and other work sites.

[0003] Wide-body dump trucks are commonly used in mining operations. Their low cost, high payload capacity, and high efficiency make them essential transportation equipment in mining operations. However, due to the complex and specialized operating conditions of wide-body dump trucks, they are prone to collisions with surrounding objects during driving and unloading, resulting in damage to critical components and posing a threat to the driver's safety.

[0004] To improve the safety and reliability of wide-body mining dump trucks during driving and operation, they are usually equipped with rear guards. However, existing rear guards have poor impact resistance and stability, resulting in weak protective performance. Utility Model Content

[0005] Based on this, it is necessary to provide a rear protection device and a vehicle to address the problems that the current rear protection device has poor impact resistance and stability and weak protection performance.

[0006] A rear protection device, comprising a mounting frame and an anti-collision frame, wherein:

[0007] The mounting frame includes a load-bearing portion and a mounting portion, the mounting portion having a first end and a second end disposed opposite to each other, the first end being connected to the load-bearing portion, the second end being connected to the anti-collision frame, and the mounting portion gradually narrowing in a direction from the first end toward the second end;

[0008] A direction parallel to the first end toward the second end is a first direction, the bearing portion is vertically arranged along the first direction, and a side of the bearing portion facing away from the mounting portion is detachably connected to the vehicle body.

[0009] The rear guard device is configured such that the supporting portion is arranged vertically along a first direction, and the mounting portion connected to the supporting portion gradually narrows from the first end toward the second end, resulting in a structure that is wider at the top and narrower at the bottom after the supporting portion and the mounting portion are connected. This reduces manufacturing difficulty and cost, while also providing greater stability and impact resistance, thereby improving the protective performance of the rear guard device. Furthermore, the detachable connection between the supporting portion and the vehicle body simplifies and flexibly assembles the rear guard device to the vehicle body, facilitating subsequent quality inspection and maintenance.

[0010] In one embodiment, the anti-collision frame includes a first crossbeam, the number of the mounting frames is two, and the second ends of the two mounting frames are spaced apart from the first crossbeam.

[0011] In one embodiment, the mounting frame includes a connecting plate and a mounting plate connected to the connecting plate, wherein:

[0012] The connecting plate includes a first plate, a second plate, and a third plate connected in sequence, wherein the first plate is connected to the second plate at a first angle, the second plate is connected to the third plate at a second angle, and the third plate is gradually narrowed along the first direction;

[0013] The mounting plate includes a fourth plate body and a fifth plate body connected to the fourth plate body at a third angle. The fourth plate body is vertically arranged along the first direction, and the fifth plate body is gradually narrowed along the first direction.

[0014] In one embodiment, there are two mounting plates, and the two mounting plates are connected to two opposite sides of the connecting plate. The mounting frame also includes a first reinforcing rib, and both ends of the first reinforcing rib are respectively connected to the two mounting plates.

[0015] In one embodiment, the mounting frame has a receiving cavity, and the two receiving cavities are arranged opposite to each other and are connected. The anti-collision frame further includes a second crossbeam, and two ends of the second crossbeam are respectively installed in the two receiving cavities.

[0016] In one embodiment, the anti-collision frame further includes a connecting side tube, one end of the connecting side tube is connected to the first crossbeam, and the other end of the connecting side tube is connected to the mounting frame.

[0017] In one embodiment, the anti-collision frame further includes a second reinforcing rib, and two ends of the second reinforcing rib are respectively arranged on the first crossbeam and the second crossbeam.

[0018] In one embodiment, the mounting plate is provided with a weight-reducing through hole, and the weight-reducing through hole passes through the mounting plate along the thickness direction of the mounting plate.

[0019] In one embodiment, a mounting through hole is formed on a side of the bearing portion facing away from the mounting portion, and the first fastener passes through the mounting through hole and is disposed on the vehicle body.

[0020] The present application also provides a vehicle, comprising a vehicle body and a rear protection device as described in any of the above embodiments, wherein the rear protection device is detachably connected to the vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the rear protection device provided in this application installed on the vehicle body.

[0022] Figure 2 This is a schematic structural diagram of the rear protection device provided in this application.

[0023] in:

[0024] 10. Rear guard; a. First direction; 20. Frame;

[0025] 100, mounting frame; 110, load-bearing portion; 120, mounting portion; 130, connecting plate; 131, first plate; 132, second plate; 133, third plate; 140, mounting plate; 141, fourth plate; 142, fifth plate; 143, weight-reducing through hole; 150, first reinforcing rib; 160, accommodating cavity; 170, first fastener;

[0026] 200, anti-collision frame; 210, first crossbeam; 220, cover plate; 230, second crossbeam; 240, connecting side tube; 250, second reinforcing rib. DETAILED DESCRIPTION

[0027] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0028] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0029] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0030] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0031] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0032] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0033] See Figure 1 and Figure 2 As shown, Figure 1 This is a schematic diagram of the structure of the rear protection device 10 provided in one embodiment of the present application installed on the vehicle body. Figure 2 A schematic structural diagram of a rear guard device 10 according to an embodiment of the present application. The rear guard device 10 according to an embodiment of the present application includes a mounting frame 100 and an anti-collision frame 200.

[0034] The mounting frame 100 includes a load-bearing portion 110 and a mounting portion 120. The mounting portion 120 has a first end and a second end that are oppositely disposed. The first end is connected to the load-bearing portion 110, and the second end is connected to the anti-collision frame 200. The mounting portion 120 gradually narrows in a direction from the first end toward the second end. A direction parallel to the first end toward the second end is a first direction a. The load-bearing portion 110 is vertically arranged along the first direction a. In a specific configuration, the size of the end of the load-bearing portion 110 adjacent to the mounting portion 120 is larger than the size of the first end of the mounting portion 120, so that the load-bearing portion 110 and the mounting portion 120 form a structure that is wider at the top and narrower at the bottom. The side of the load-bearing portion 110 facing away from the mounting portion 120 is detachably connected to the vehicle frame 20 in the vehicle body.

[0035] The rear guard 10 is configured such that the support portion 110 is arranged vertically along a first direction a, and the mounting portion 120 connected to the support portion 110 gradually narrows from the first end toward the second end, resulting in a structure that is wide at the top and narrow at the bottom after the support portion 110 and the mounting portion 120 are connected. This reduces manufacturing difficulty and cost, while also providing greater stability and impact resistance, thereby improving the protective performance of the rear guard 10. Furthermore, the detachable connection between the support portion 110 and the vehicle body simplifies and flexibly assembles the rear guard 10 with the vehicle body, facilitating subsequent quality inspection and maintenance.

[0036] To disperse the impact forces experienced by the rear guard 10 during use, a preferred embodiment includes a crash bar 200 comprising a first crossbeam 210, two mounting brackets 100, and the second ends of the two mounting brackets 100 spaced apart from the first crossbeam 210. This arrangement makes the first crossbeam 210 the bottom component of the rear guard 10 and the primary crash-resistant crossbeam of the vehicle body. It is designed to prevent small vehicles from penetrating the vehicle body in the event of a collision. During use, when the first crossbeam 210 is impacted, the impact force is dispersed and transmitted to the vehicle body along the two mounting brackets 100, avoiding the risk of stress concentration and vehicle deformation that can occur with a single mounting bracket 100.

[0037] It should be noted that the hollow circular tube has a strong torsional resistance. The first crossbeam 210 is preferably a hollow circular tube but is not limited to the above-mentioned hollow circular tube. It can also be a tube with a square cross-section, a triangular cross-section, or other geometric shapes. In order to prevent debris from entering the interior of the first crossbeam 210, the two ends of the first crossbeam 210 are provided with sealing plates 220. The sealing plates 220 and the first crossbeam 210 are preferably welded but are not limited to the above-mentioned welding. They can be glued, clamped, or integrally formed. The sealing plates 220 can be prepared by a machined steel plate machine. The provision of the sealing plates 220 improves the structural strength of the ends of the first crossbeam 210 and prevents the ends of the first crossbeam 210 from deformation.

[0038] In order to more conveniently design the mounting frame 100, a preferred embodiment is that the mounting frame 100 includes a connecting plate 130 and a mounting plate 140 connected to the connecting plate 130. In the specific setting, the connecting plate 130 and the mounting plate 140 are preferably connected by welding but are not limited to the above-mentioned welding. Other forms of connection may be gluing, snap-fitting, concave-convex fitting, etc.

[0039] The connecting plate 130 includes a first plate 131, a second plate 132, and a third plate 133 connected in sequence along a first direction a. The first plate 131 and the second plate 132 are connected at a first angle. In a specific configuration, the first angle is preferably 90 degrees. The second plate 132 and the third plate 133 are connected at a second angle. In a specific configuration, the second angle is greater than 90 degrees, and the third plate 133 gradually narrows along the first direction a. It should be noted that the first plate 131, the second plate 132, and the third plate 133 in the connecting plate 130 are generally integrally formed. The above three can be formed by casting, by repeatedly rolling a steel billet through a dedicated steel rolling mill, or by bending a plate or steel strip after machining to the corresponding shape.

[0040] The mounting plate 140 includes a fourth plate 141 and a fifth plate 142 connected to the fourth plate 141 at a third angle. Specifically, the third angle is greater than 90 degrees. The fourth plate 141 is vertically arranged along the first direction a, and the fifth plate 142 gradually tapers along the first direction a. It should be noted that the molding method of the mounting plate 140 is similar to that of the connecting plate 130 and will not be elaborated on here.

[0041] During specific installation, the first plate body 131 and the second plate body 132 in the connecting plate 130 are L-shaped structures, and the adjacent two sides of the fourth plate body 141 are respectively connected to the first plate body 131 and the second plate body 132 on the same side to form a bearing portion 110; the fifth plate body 142 and the third plate body 133 respectively have a first inclined wall and a second inclined wall extending along the first direction a, and the first inclined wall of the fifth plate body 142 is connected to the second inclined wall of the third plate body 133 to form an installation portion 120.

[0042] To reduce deformation of the rear guard 10 during an impact, two mounting plates 140 are provided, connected to opposite sides of the connecting plate 130. Specifically, the two fourth plates 141 are connected to the first plate 131 and the second plate 132 to form a cavity structure with open ends, and the two fifth plates 142 are connected to the third plate 133 to form a U-shaped opening. The mounting frame 100 also includes a first reinforcing rib 150, each end of which is connected to the two mounting plates 140.

[0043] In the specific configuration, the first reinforcing ribs 150 are respectively connected to the two fifth plates 142 arranged symmetrically about the third plate 133, and the first reinforcing ribs 150 are perpendicular to the fifth plates 142. It should be noted that the first reinforcing ribs 150 and the fifth plates 142 are preferably connected by welding, but this is not limited to welding; they can also be glued, clamped, or connected in other ways. Furthermore, the first reinforcing ribs 150 can be manufactured using a machined steel plate. This configuration improves the structural strength and impact resistance of the rear guard 10, reducing deformation during impact.

[0044] In order to improve the pressure resistance of the rear guard 10, specifically, the mounting frame 100 has a receiving cavity 160, and the two receiving cavities 160 are arranged opposite each other and connected. It is not difficult to understand that when the connecting plate 130 is connected to the two mounting plates 140 symmetrically arranged about the connecting plate 130 in the aforementioned manner, the receiving cavity 160 will be formed. No further explanation will be given here. The anti-collision frame 200 also includes a second crossbeam 230, the two ends of the second crossbeam 230 are respectively installed in the two receiving cavities 160. In the specific configuration, the two ends of the second crossbeam 230 are respectively connected to the two third plates 133 in the two connecting plates 130. The second crossbeam 230 is arranged below the first reinforcement rib 150 and is located in the middle of the rear guard 10, thereby increasing the structural strength and pressure resistance of the rear guard 10. At the same time, the second crossbeam 230 is parallel to the first crossbeam 210, and the first crossbeam 210 is located at the bottom position of the rear guard 10, further increasing the structural strength and pressure resistance of the rear guard 10.

[0045] It should be noted that the hollow circular tube has a strong torsional resistance. The second crossbeam 230 is preferably a hollow circular tube but is not limited to the above hollow circular tube. It can also be a tube with other geometric shapes such as a square cross section or a triangular cross section.

[0046] To improve the stability of the rear guard 10, the crash bar 200 further includes a connecting side tube 240, one end of which is connected to the first cross member 210, and the other end of which is connected to the mounting frame 100. Specifically, the other end of the connecting side tube 240 is connected to the outer wall of the third plate 133 in the mounting frame 100, thereby forming a triangular space between the third plate 133, the first cross member 210, and the connecting side tube 240, thereby improving the stability of the rear guard 10. It should be noted that there are two connecting side tubes 240, each connecting the outer walls of the two third plates 133 to the first cross member 210, further strengthening the bending and torsional resistance of the rear guard 10.

[0047] To strengthen the rear guard 10, the crash bar 200 further includes a second reinforcing rib 250, with its ends disposed on the first crossbeam 210 and the second crossbeam 230, respectively. This arrangement allows the second reinforcing rib 250 to transmit impact forces and strengthen the connection between the first and second crossbeams 210, 230, thereby enhancing the overall strength of the rear guard 10. Specifically, the first and second crossbeams 210, 230 are parallel, with the ends of the second reinforcing rib 250 perpendicular to the first and second crossbeams 210, 230, respectively. The second reinforcing rib 250 is preferably connected to the first and second crossbeams 210, 230 by welding, but this is not limited to welding. Alternatively, the connection may be adhesive bonding, clamping, or other methods. The second reinforcing rib 250 is preferably fabricated by machined steel plate.

[0048] To reduce the weight of the rear guard 10 while ensuring its strength, the mounting plate 140 is provided with a weight-reducing through-hole 143 extending through the mounting plate 140 along its thickness. Specifically, the fourth plate 141 and the fifth plate 142 of the mounting plate 140 are each provided with a weight-reducing through-hole 143. The shape of the weight-reducing through-hole 143 is not limited and can be any geometric shape.

[0049] To facilitate detachable connection between the side of the load-bearing portion 110 facing away from the mounting portion 120 and the vehicle body, a preferred embodiment provides a mounting hole on the side of the load-bearing portion 110 facing away from the mounting portion 120. Specifically, the mounting hole is provided on the first plate 131 forming the load-bearing portion 110. The first fastener 170 passes through the mounting hole and is installed below the vehicle frame 20 in the vehicle body. Specifically, the first fastener 170 can be a bolt, screw, or other fastener. This arrangement simplifies assembly of the rear guard 10 with the vehicle body, provides high flexibility, and facilitates maintenance.

[0050] The present application also provides a vehicle, comprising a vehicle body and a rear protection device 10 as described in any of the above embodiments, wherein the rear protection device 10 is detachably connected to the vehicle body.

[0051] The above-mentioned vehicle is provided with a detachable connection between the rear guard device 10 and the vehicle body, so that the assembly of the rear guard device 10 and the vehicle body is simple and flexible, which is convenient for subsequent quality inspection and maintenance; and the load-bearing part 110 in the rear guard device 10 is vertically arranged along the first direction a, and the installation part 120 connected to the load-bearing part 110 is gradually narrowed in the direction from the first end to the second end, so that the load-bearing part 110 and the installation part 120 have a structure that is wide at the top and narrow at the bottom after being connected. On the one hand, it reduces the manufacturing difficulty and manufacturing cost, and on the other hand, the structure that is wide at the top and narrow at the bottom has strong stability and impact resistance, thereby improving the protective performance of the rear guard device 10 and thus improving the overall service life of the vehicle.

[0052] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0053] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A rear protection device, characterized in that: The rear protection device includes a mounting frame and an anti-collision frame, wherein: The mounting frame includes a load-bearing portion and a mounting portion, the mounting portion having a first end and a second end disposed opposite to each other, the first end being connected to the load-bearing portion, the second end being connected to the anti-collision frame, and the mounting portion gradually narrowing in a direction from the first end toward the second end; A direction parallel to the first end toward the second end is a first direction, the bearing portion is vertically arranged along the first direction, and a side of the bearing portion facing away from the mounting portion is detachably connected to the vehicle body.

2. The rear guard device according to claim 1, characterized in that: The anti-collision frame includes a first crossbeam, the number of the mounting frames is two, and the second ends of the two mounting frames are spaced apart from the first crossbeam.

3. The rear protection device according to claim 1, characterized in that: The mounting frame includes a connecting plate and a mounting plate connected to the connecting plate, wherein: The connecting plate includes a first plate, a second plate, and a third plate connected in sequence, wherein the first plate is connected to the second plate at a first angle, the second plate is connected to the third plate at a second angle, and the third plate is gradually narrowed along the first direction; The mounting plate includes a fourth plate body and a fifth plate body connected to the fourth plate body at a third angle. The fourth plate body is vertically arranged along the first direction, and the fifth plate body is gradually narrowed along the first direction.

4. The rear protection device according to claim 3, characterized in that: There are two mounting plates, and the two mounting plates are connected to two opposite sides of the connecting plate. The mounting frame further includes a first reinforcing rib, and both ends of the first reinforcing rib are respectively connected to the two mounting plates.

5. The rear protection device according to claim 2, characterized in that: The mounting frame has an accommodating cavity, and the two accommodating cavities are arranged opposite to each other and are connected. The anti-collision frame also includes a second crossbeam, and the two ends of the second crossbeam are respectively installed in the two accommodating cavities.

6. The rear protection device according to claim 5, characterized in that: The anti-collision frame further includes a connecting side tube, one end of which is connected to the first crossbeam, and the other end of which is connected to the mounting frame.

7. The rear guard device according to claim 5, characterized in that: The anti-collision frame further includes a second reinforcing rib, and two ends of the second reinforcing rib are respectively arranged on the first crossbeam and the second crossbeam.

8. The rear protection device according to claim 3, characterized in that: The mounting plate is provided with a weight-reducing through hole, and the weight-reducing through hole passes through the mounting plate along the thickness direction of the mounting plate.

9. The rear guard device according to claim 1, characterized in that: A mounting through hole is formed on a side of the bearing portion away from the mounting portion, and a first fastener passes through the mounting through hole and is arranged on the vehicle body.

10. A vehicle, characterized in that: The vehicle comprises a vehicle body and a rear protection device according to any one of claims 1 to 9, wherein the rear protection device is detachably connected to the vehicle body.

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