A wide-body dump truck's carriage rear door structure

Abstract

The utility model discloses a wide body dump truck's carriage rear door structure, including frame and carriage, both are connected through hinged axle, the rear end of carriage is equipped with rear door, its characterized in that, the both sides board outside symmetry of carriage is provided with turnover arm, and turnover arm is connected with the carriage through turnover shaft, and one end of turnover arm is connected with rear door, and the other end is connected with zip fastener upper end, and zip fastener lower end is connected with zip fastener lower support, and zip fastener lower support is fixedly connected with frame, the carriage rear door structure of turnover is realized through zip fastener traction, when the carriage moves, rear door is turned around turnover shaft under zip fastener traction, realizes the opening and closing of rear door, when the carriage is lifted, and rear door is gradually opened by zip fastener traction, and the opening amplitude is big, and the unloading is convenient, when the carriage falls back, and rear door is gradually closed by zip fastener traction, and the falling back speed is even, and the impact of rear door to the carriage side plate reduces.

Description

Technical Field

[0001] This utility model relates to the field of off-highway dump truck technology, specifically to a rear door structure for a wide-body dump truck. Technical Background

[0002] Currently, the rear doors of wide-body dump trucks generally adopt a structure where a tilting mechanism is welded to the top of the rear side panel of the truck bed to open and close the rear door. Due to the deformation of the truck bed during welding, the tilting mechanism of the rear door needs to be welded on-site, resulting in poor welding process. This structure also results in a small opening range for the rear door, which is greatly limited by the volume of the loaded cargo. If large cargo is encountered, it is easy for the cargo to get stuck and unable to be unloaded. Due to the weight of the rear door, the impact of the rear door falling back on the truck bed is significant, resulting in a high failure rate for the rear door itself, the side panels of the truck bed, and the tilting mechanism. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a rear door structure for a wide-body dump truck.

[0004] The technical solution of this utility model is: a rear door structure for a wide-body dump truck, including a frame and a truck body, which are connected by a hinge shaft, and a rear door is provided at the rear end of the truck body; the special feature is that symmetrically arranged flip arms are provided on the outer sides of the two side panels of the truck body, the flip arms are connected to the truck body through flip shafts, one end of the flip arm is connected to the rear door, the other end of the flip arm is connected to the upper end of a zipper, the lower end of the zipper is connected to a lower zipper support, and the lower zipper support is fixedly connected to the frame.

[0005] Furthermore, the other end of the flip arm is connected to the upper end of the zipper via a buckle, and the lower end of the zipper is connected to the lower zipper support via a buckle.

[0006] Furthermore, the rear door is fixed to the tilting arm by bolts.

[0007] The positive effects of this utility model are: 1. The rear door is fixed to the tilting arm by bolts, and the tilting arm is installed on the outside of the side panel of the carriage by tilting shaft, which improves the overall strength of the carriage; 2. The zipper pulls the rotating arm to drive the rear door to tilt, the rear door opens to a large extent, which is convenient for unloading, and the rear door falls back at a uniform speed, which reduces the impact of the rear door on the side panel of the carriage. Attached Figure Description

[0008] Figure 1 is a structural schematic diagram of this utility model;

[0009] Figure 2 yes Figure 1 The right view;

[0010] Figure 3 yes Figure 2 A magnified view of a portion of the image;

[0011] Figure 4 yes Figure 1 Enlarged view of the installation at the top of the zipper;

[0012] Figure 5 This is a diagram showing the rear door opening when the cargo box is lifted.

[0013] In the picture: 1. Carriage, 2. Rear door, 3. Tilting arm, 4. Tilting shaft, 5. Zipper, 6. Buckle, 7. Zipper under support, 8. Frame, 9. Hinge shaft. Detailed Implementation

[0014] To better understand and implement this utility model, the following detailed description is provided in conjunction with the accompanying drawings. The embodiments described are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0015] like Figure 1 , 2 As shown in Figures 3, 4, and 5, a rear door structure of a wide-body dump truck consists of a cargo box 1, a rear door 2, a tipping arm 3, a tipping shaft 4, a zipper 5, a buckle 6, a zipper lower support 7, a frame 8, and a hinge shaft 9.

[0016] The tilting shaft 4 is fixed to the outside of the side panel of the carriage 1 by bolts, one on each side, placed symmetrically; the bushing of the tilting arm 3 is fitted onto the tilting shaft 4 and connected to the carriage 1; the rear door 2 is connected to one end of the tilting arm 3 by bolts; the upper end of the zipper 5 is connected to the other end of the tilting arm 3 by a buckle 6, and the lower end of the zipper 5 is connected to the lower zipper support 7 by a buckle 6; the lower zipper support 7 is fixed to the frame 8 by bolts; the carriage 1 is connected to the frame 8 by a hinge shaft 9.

[0017] This utility model discloses a rear door structure for a wide-body dump truck, which is a rear door that flips by being pulled by a zipper. When the truck body moves, the rear door flips around the flipping axis under the pull of the zipper, realizing the opening and closing of the rear door. When the truck body is lifted, the flipping arm drives the rear door to open under the pull of the zipper. The rear door is gradually opened by the pull of the zipper, and the opening range is large, which facilitates unloading. When the truck body falls back, the rear door is gradually closed by the pull of the zipper, and the falling speed is uniform, reducing the impact of the rear door on the side panels of the truck body.

[0018] It should be understood that any technical features not elaborated in detail in this specification belong to the prior art. Although the embodiments of this patent have been described, this patent is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this patent without departing from the spirit and scope of protection of the claims, and these all fall within the scope of protection of this patent.

Claims

1. A rear door structure for a wide-body dump truck, comprising a frame (8) and a cargo box (1) connected by a hinge shaft (9), wherein a rear door (2) is provided at the rear end of the cargo box (1); characterized in that, The two side panels of the carriage (1) are symmetrically provided with flip arms (3). The flip arms (3) are connected to the carriage (1) through flip shafts (4). One end of the flip arms (3) is connected to the rear door (2). The other end of the flip arms (3) is connected to the upper end of the zipper (5). The lower end of the zipper (5) is connected to the lower zipper support (7). The lower zipper support (7) is fixedly connected to the frame (8).

2. The rear door structure of the cargo box of a wide-body dump truck according to claim 1, characterized in that, The other end of the flip arm (3) is connected to the upper end of the zipper (5) via a buckle (6), and the lower end of the zipper (5) is connected to the zipper support (7) via a buckle (6).

3. The rear door structure of the cargo box of a wide-body dump truck according to claim 1, characterized in that, The rear door (2) is fixed to the flip arm (3) by bolts.

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