Emergency protective cab of off-highway dump truck

Abstract

An emergency protective cab of an off-highway dump truck, relating to the technical field of engineering machinery. Said emergency protective cab comprises a vehicle frame (1), and a cab (2) and a cargo box (3) which are on the vehicle frame (1). Emergency protective devices are installed on the top surface of the cab (2) and the two sides of the cargo box (3); and when the angle of the emergency protective device on the cab (2) changes, the emergency protective devices slidably installed on the cargo box (3) slide towards the cab (2) so as to implement three-sided protection. When a visor suffers from an external force, said emergency protective cab triggers protective plates to slide towards the cab, so as to form a protection space from the top surface, the left side and the right side of the cab, thus solving the problem in the prior art that when severe collapse occurs and vehicles are buried in soil and stones, emergency survival spaces for drivers and passengers cannot be provided because both sides of cabs have poor protection effect and are liable to deform.

Description

An emergency protective cab for off-highway dump trucks Technical Field

[0001] This utility model relates to the field of engineering machinery technology, specifically to an emergency protective cab for off-highway dump trucks. Background Technology

[0002] When off-highway dump trucks are used for transportation operations in mining areas, they may encounter soil collapses. In severe cases, the collapsed soil and rocks can bury the vehicles and personnel. However, the current technology often only protects the cab from falling objects by using the visor. The cab has a simple structure on both sides. In an emergency, the impact of soil, rocks or other falling objects on the sides of the cab can easily cause deformation of the cab, resulting in the inability to guarantee emergency space and posing a significant safety hazard to the driver and passengers.

[0003] Utility Model Content

[0004] The purpose of this utility model is to provide an emergency protective cab for off-highway dump trucks, in order to solve the problem mentioned in the background art that the cab has a simple structure on both sides, and in an emergency, the sides of the cab are easily deformed by the impact of soil, rocks or other falling objects, which makes it impossible to guarantee the emergency space and poses a great safety hazard to the driver and passengers.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an emergency protective cab for off-highway dump trucks, comprising: a frame, a cab on the frame, and a cargo box;

[0006] Emergency protection devices are installed on the top surface of the cab and on both sides of the cargo box. When the angle of the emergency protection device on the cab changes, the emergency protection device slidably installed on the cargo box slides towards the cab to provide three-sided protection.

[0007] Preferably, the emergency protection device includes a cap that is hinged to the top of the cab and connected to the cargo box, and protective plates that are slidably installed on both sides of the cargo box, wherein the cap is spot-welded to the cargo box.

[0008] Preferably, the emergency protection device further includes a lever hinged to the cargo box and the protective plate, connecting ears installed on the lever, springs in a stretched state installed on the two connecting ears, and the lever extension plate overlapping the bottom of the rear end of the brim;

[0009] When the spot weld on the top surface of the cap brim is broken by an external force, the spring in a stretched state drives the protective plate to slide towards the cab.

[0010] Preferably, the protective plate and / or the lever are connected to the connecting lug bearing.

[0011] Preferably, a groove is provided on the side of the protective plate facing the cab, and a buckle is provided near the front end of the cab, which is level with the groove. When the buckle is in the groove, it cooperates to limit the movement of the protective plate.

[0012] Preferably, the groove is provided with a claw to prevent the buckle from dislodging, and the claw is twistedly connected to the groove.

[0013] Preferably, the claws are arranged facing each other vertically.

[0014] Preferably, the end of the claw is rounded.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention utilizes the external force triggered by the brim to slide the protective plate towards the cab, thereby creating a protective space for the top and left and right sides of the cab. This solves the problem in the prior art where, in the event of a severe landslide, the soil and rocks bury the vehicle, resulting in poor protection on both sides of the cab, easy deformation, and inability to provide emergency survival space for the driver and passengers. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 is a schematic diagram of the protection plate in the trigger state structure of this utility model;

[0019] Figure 3 is a schematic cross-sectional view of the overall structure of this utility model;

[0020] Figure 4 is a schematic diagram of the structure at point A in Figure 2.

[0021] In the diagram: 1. Chassis; 2. Cab; 3. Cargo box; 4. Hood; 5. Protective plate; 6. Lever; 7. Connecting lug; 8. Spring; 9. Groove; 10. Buckle; 11. Claw. Detailed Implementation

[0022] 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.

[0023] Please refer to Figures 1-4. As shown in Figure 1, an emergency protection cab for an off-highway dump truck consists of a frame 1, a cab 2 on the frame 1, a cargo box 3, and an emergency protection device.

[0024] In practice, emergency protection devices are installed on the top surface of the cab 2 and on both sides of the cargo box 3. When the angle of the emergency protection device on the cab 2 changes, the emergency protection device slidably installed on the cargo box 3 slides towards the cab 2 to provide three-sided protection.

[0025] As shown in Figures 2 and 3, the emergency protection device consists of a brim 4 hinged to the top of the cab 2 and the cargo box 3, and protective plates 5 slidably mounted on both sides of the cargo box 3. The brim is spot-welded to the cargo box. A lever 6 is hinged to the cargo box 3. Bearing-connected lugs 7 are installed on the protective plates 5 and the lever 6. Springs 8 in a stretched state are installed on the two lugs 7. The extension plate of the lever 6 overlaps the bottom of the rear end of the brim 4. When the top surface of the brim 4 is subjected to external force and the spot weld breaks, the stretched springs 8 cause the protective plates 5 to slide towards the cab 2.

[0026] As shown in Figure 4, a groove 9 is formed on the side of the protective plate 5 facing the cab 2. A buckle 10 is set near the front end of the cab 2, which is level with the groove 9. A claw 11 with a rounded end is set in the groove 9 to prevent the buckle 10 from falling out. The claws 11 are arranged vertically opposite each other and are twistedly connected to the groove 9. When the buckle 10 is in the groove 9, it helps to limit the movement of the protective plate 5.

[0027] It should be noted that in actual application, when the brim 4 is hit by a falling object, the pre-welded spot of the brim 4 breaks, and the brim 4 moves in a circular motion around the hinge point. Subsequently, the extension plate of the lever 6, which is pressed down at the rear end, is released from its limit. The elastic potential energy of the stretched spring 8 drives the lever 6 to rotate around the hinge point. At the same time, the protective plate 5 installed on the cargo box 3 slides and pops out towards the cab 2, and the buckle 10 is embedded in the groove 9 on the protective plate 5 and cooperates with the claw 11 to limit the protective plate 5.

[0028] Since the end of the claw 11 is rounded inside and out, when the protective plate 5 is released, only an external force needs to be applied to the protective plate 5 in the direction of the cargo box 3. The claw 11 is squeezed and rotates around the torsion axis, causing the groove 9 to open. Then, it is torsionally reset by torsion force.

[0029] Any content not described in detail in this specification is prior art known to those skilled in the art.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An emergency protective cab for off-highway dump trucks, characterized in that... ,include: The vehicle frame (1), the cab (2) on the vehicle frame (1) and the cargo box (3); Emergency protection devices are installed on the top surface of the cab (2) and on both sides of the cargo box (3). When the angle of the emergency protection device on the cab (2) changes, the emergency protection device slidably installed on the cargo box (3) slides towards the cab (2) for three-sided protection.

2. The off-highway dump truck emergency protective cab according to claim 1, characterized in that: The emergency protection device includes a cap (4) that is hinged to the top of the cab (2) and the cargo box (3) and protective plates (5) that are slidably installed on both sides of the cargo box (3). The cap (4) is spot welded to the cargo box (3).

3. The off-highway dump truck emergency protective cab according to claim 2, characterized in that: The emergency protection device also includes a lever (6) hinged to the cargo box (3) and the protective plate (5), a connecting ear (7) installed on the lever (6), a spring (8) in a stretched state installed on the two connecting ears (7), and the extension plate of the lever (6) overlapping the bottom of the rear end of the brim (4). When the top surface of the cap brim (4) is subjected to external force and the spot weld breaks, the spring (8) in the stretched state drives the protective plate (5) to slide towards the cab (2).

4. The off-highway dump truck emergency protective cab according to claim 3, characterized in that: The protective plate (5) and / or the lever (6) are connected to the connecting lug (7) bearing.

5. The off-highway dump truck emergency protective cab according to any one of claims 2-4, characterized in that: A groove (9) is provided on the side of the protective plate (5) facing the cab (2). A buckle (10) is provided near the front end of the cab (2) which is level with the groove (9). When the buckle (10) is located in the groove (9), it cooperates to limit the protective plate (5).

6. The off-highway dump truck emergency protective cab according to claim 5, characterized in that: The groove (9) is provided with a claw (11) to prevent the buckle (10) from falling out, and the claw (11) is twistedly connected to the groove (9).

7. The off-highway dump truck emergency protective cab according to claim 5, characterized in that: The claws (11) are arranged facing each other vertically.

8. The off-highway dump truck emergency protective cab according to claim 7, characterized in that: The end of the claw (11) is rounded.

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