Single-cylinder dump truck with rear and side tipping

Abstract

The application discloses a single-cylinder rear tipping and side tipping self-dumper, which comprises a vehicle body support cross beam, a hydraulic cylinder and four hydraulic cylinder supports arranged on the vehicle body support cross beam, a movable ball pin at the top of the hydraulic cylinder connected with the bottom of a container bottom plate through a pin shaft, four rotating shafts arranged around the hydraulic cylinder, rotating shaft holes formed in the inner side of the hydraulic cylinder supports, the rotating shafts corresponding to the rotating shaft holes and detachably connected with the rotating shaft holes, a pneumatic or electric cylinder arranged on the side of the hydraulic cylinder support far from the hydraulic cylinder, and the pneumatic or electric cylinder capable of pushing the hydraulic cylinder support to reciprocate on a support track. The single-cylinder rear tipping and side tipping self-dumper has the advantages that the rear tipping lifting efficiency is high in an open area, the side tipping is adopted in a basement to avoid manual unloading, the pneumatic or electric cylinder is adopted to realize the left side tipping and the right side tipping without manual operation, the lifting efficiency is improved, personnel do not need to get off the vehicle to adjust, and the applicability and practicability of the vehicle are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and in particular to a single-cylinder dump truck with rear-tipping and side-tipping capabilities. Background Technology

[0002] Dump trucks are specialized vehicles that use their engine power to drive a hydraulic lifting mechanism to tilt their cargo box at a certain angle for unloading, and then rely on the weight of the cargo box to return it to its original position. Lifting methods include rear tipping, side tipping, and bottom-panel tipping (less commonly used).

[0003] Currently, conventional dump trucks all use a rear-tipping structure. However, when the truck is tilted, the height of the front of the cargo box off the ground increases dramatically (with a rear-tipping structure, the height of the front gantry generally increases by 1442mm after the cargo box is tilted 45°). This makes it unsuitable for lifting in low-ceilinged environments such as basements. On the other hand, due to the lateral tilting, the height of the cargo box changes less after being lifted, making it suitable for basements and lateral unloading scenarios (with a side-tipping structure, the height of the front gantry is 175mm higher than the cab after the cargo box is tilted 45°. Using a lower gantry frame can ensure that the cargo box tilting does not exceed the height of the cab). However, compared to rear-tipping vehicles, the risk of overall side rollover is significantly increased. The required lifting surface needs to be flat and without angles, and the tilting hinges on both sides need to be adjusted to determine whether the left or right side is tilted. Both types of tipping have certain limitations and advantages. This invention designs a dump truck with both rear tipping and side tipping functions using a single cylinder and an electric cylinder. In open areas, rear tipping is used to improve efficiency, while side tipping is used in basements to avoid manual unloading. At the same time, the use of cylinders and electric cylinders allows for left and right side tipping without manual operation, improving lifting efficiency, avoiding the need for personnel to get out of the vehicle for adjustments, and greatly enhancing the vehicle's applicability and practicality. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a single-cylinder dump truck with rear tipping and side tipping, which overcomes the above-mentioned defects of the prior art. In open areas, rear tipping is used to improve efficiency, while side tipping is used in basements to avoid manual unloading. At the same time, the use of cylinders and electric cylinders allows the side tipping to the left and right without manual operation, improving lifting efficiency, avoiding the need for personnel to get out of the vehicle to make adjustments, and greatly improving the applicability and practicality of the vehicle.

[0005] The technical problem to be solved by the present invention is achieved through the following technical solution:

[0006] A single-cylinder rear-tipping and side-tipping dump truck includes a body support beam. A hydraulic cylinder and four hydraulic cylinder supports are installed on the body support beam. The movable ball pin at the top of the hydraulic cylinder is connected to the bottom of the cargo box floor through a pin shaft and a fixing frame. Four rotating shafts are arranged around the hydraulic cylinder. The inner side of the hydraulic cylinder support has a rotating shaft hole. The rotating shaft corresponds to the rotating shaft hole and is detachably connected. A pneumatic or electric cylinder is arranged on the side of the hydraulic cylinder support away from the hydraulic cylinder. The pneumatic or electric cylinder can drive the hydraulic cylinder support to reciprocate on the support track.

[0007] Preferably, in the above technical solution, a guide channel is provided below the hydraulic cylinder support. The guide channel is used to ensure that the hydraulic cylinder will not deflect left or right when it is overturned and will not sway back and forth when it is overturned.

[0008] Preferably, in the above technical solution, the opening edge of the shaft hole near the hydraulic cylinder is provided with a chamfered structure to facilitate the entry and exit of the shaft.

[0009] Preferably, in the above technical solution, the hydraulic cylinder support is provided with limiting devices on both sides for limiting its movement.

[0010] Preferably, in the above technical solution, the hydraulic cylinder is provided with separate inlet and outlet ports.

[0011] Preferably, in the above technical solution, the single-cylinder rear-tipping dump truck with side-tipping also includes a side-tipping support and a rear-tipping support. The side-tipping support is disposed on both sides of the vehicle body longitudinal beam, and the rear-tipping support is disposed at the rear of the vehicle.

[0012] Preferably, in the above technical solution, the four rotating shafts on the hydraulic cylinder are at equal angles, and the included angle between two adjacent rotating shafts is 90°.

[0013] A method of using a single-cylinder dump truck with rear-tipping and side-tipping capabilities includes:

[0014] When a rearward tilt is required, the hydraulic cylinders on the left and right sides of the hydraulic cylinder are in position, while the hydraulic cylinders on the front and rear sides move forward and backward (forward in the direction of the front of the vehicle, backward in the direction of the rear of the vehicle) without contacting the hydraulic cylinders; the rear tilting support is in working condition under the action of the pneumatic or electric cylinder; the four side tilting supports on both sides of the vehicle's longitudinal beams are in a disabled state, and the cargo box tilts backward; or

[0015] When a rollover is required, the hydraulic cylinder supports on the left and right sides of the hydraulic cylinder move left and right without contacting the hydraulic cylinder, and the hydraulic cylinder supports on the front and rear sides are in place (front for the front of the vehicle and rear for the rear of the vehicle); the rear rollover support is in a disabled state. As needed, one side of the left and right rollover support is in a working state and the other side is in a disabled state.

[0016] The above-described technical solution of the present invention has the following beneficial effects:

[0017] This application's single-cylinder lifting dump truck solves the problem of insufficient application scenarios for single-cylinder dump trucks that can only tip backward or sideways; it also solves the problem of needing manual adjustment of the side-tipping support when side-tipping. It simultaneously possesses both side-tipping and rear-tipping functions; the hydraulic cylinder support, side-tipping, and rear-tipping pins are controlled by pneumatic or electric cylinders; a hydraulic cylinder guide channel is used to prevent side-tipping; the hydraulic cylinder has four-way support with individual oil ports, and the four supports are relatively thin, keeping weight and cost variations minimal. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0019] Figure 1A This is the front view of the hydraulic cylinder.

[0020] Figure 1B This is a side view of the hydraulic cylinder.

[0021] Figure 2 This is a schematic diagram showing the deflection of the ball pin structure at the top of the hydraulic cylinder during a rollover.

[0022] Figure 3A This is a schematic diagram showing the hydraulic cylinder with all four supports in a supported state.

[0023] Figure 3B This is another perspective diagram showing the hydraulic cylinder with all four supports in a supported state.

[0024] Figure 4A This is a schematic diagram of the overall layout.

[0025] Figure 4B This is another perspective diagram of the overall layout.

[0026] Figure 5A This is a schematic diagram showing the connection between the hydraulic cylinders and supports when the device is in the reverse tilt state (the front and rear hydraulic cylinder supports are detached).

[0027] Figure 5B This is another perspective view of the connection between the hydraulic cylinders and supports when the device is in the reverse position (the front and rear hydraulic cylinder supports are detached).

[0028] Figure 6A This is a schematic diagram of the connection between the hydraulic cylinder and the support when the vehicle is in a rollover state (rollover illustration, with the two hydraulic cylinder supports on the left and right ends detached).

[0029] Figure 6B This is another perspective view of the connection between the hydraulic cylinders and supports when the device is overturned (overturning illustration, with the two hydraulic cylinder supports on the left and right ends detached).

[0030] Figure 7 This is a schematic diagram of a side-tilting support.

[0031] Figure 8A This is a diagram illustrating the flipping process.

[0032] Figure 8B This is another perspective illustration of the flip-out view.

[0033] Figure 9 This is a diagram illustrating a rollover.

[0034] Among them: 1-body support crossbeam, 2-hydraulic cylinder, 21-rotating shaft, 3-hydraulic cylinder support, 31-rotating shaft hole, 4-pneumatic or electric cylinder, 5-support rail, 6-pin shaft, 7-cargo box floor, 8-side tipping support, 9-rear tipping support, 10-movable ball pin, 11-body longitudinal beam, 12-guide channel. Detailed Implementation

[0035] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0036] This application discloses a single-cylinder rear-tipping and side-tipping dump truck. It uses a single cylinder, meaning that in practical applications, only one cylinder is used for lifting. This makes it suitable for lightweight dump trucks and three-wheeled dump trucks with a lifting capacity of up to 2 tons. Specific applications are as follows:

[0037] like Figure 1A , Figure 1B as well as Figure 2 As shown, the dump truck of this invention still uses a single lifting hydraulic system, but the hydraulic cylinder 2 is changed from two supports to four supports. Furthermore, the hydraulic cylinder 2 has separate inlet and outlet ports, unlike the traditional design where an oil port is added to one side of the support. Traditional designs, due to the reserved oil port, have thicker supports, resulting in higher weight and cost. This invention features separate oil ports for the cylinders, and the four supports are thinner overall, maintaining minimal changes in weight and cost. Moreover, to accommodate side tipping, the top structure of the hydraulic cylinder is a movable ball pin 10, allowing the pin support hole to deflect to the left and right at a certain angle. When tipping backward, there is no deflection angle, but when tipping sideways, there is deflection.

[0038] like Figures 3A-9As shown, hydraulic cylinder 2 is vertically positioned under gravity for resetting and has two support systems – rear-tilting supports on the left and right sides and side-tilting supports on the front and rear sides (i.e., four hydraulic cylinder supports 3). Tracks (support tracks 5) and limiting devices (not shown) on both sides ensure normal movement while limiting the stroke of the hydraulic cylinder supports 3 to prevent them from detaching from the base, and ensure that at least one support system is always operational. Pneumatic or electric cylinder 4 pushes the center of gravity of the tilting support, ensuring no jamming during the pushing process. Lubricating grease is added to the running track if necessary. The support surface on the side where the hydraulic cylinders enter and exit has a chamfer (not shown) to facilitate the entry and exit of the hydraulic cylinders.

[0039] Meanwhile, guide channels 12 are set in the front, left and right directions on the lower side of the hydraulic cylinder support 3. They are made of wear-resistant nylon material and are used to ensure that the hydraulic cylinder 2 will not deflect left or right when it is overturned and will not sway back and forth when it is side-overturned, thus eliminating the risk of hydraulic cylinder deflection when a single cylinder is lifted.

[0040] To simultaneously accommodate both side-tipping and rear-tipping, a gap exists between the tipping support and the tipping plate to ensure that the rear of the cargo box flips when it tilts to the side, and that the side-tipping support and the tipping plate do not interfere with each other when the cargo box tilts to the rear.

[0041] The single-cylinder rear-tipping and side-tipping dump truck of this application is used as follows:

[0042] A single-cylinder dump truck with rear-tipping and side-tipping function when not in use, such as Figures 3A-4B As shown, the left and right rotating shafts 21 are connected to the rotating shaft holes 31, and the front and rear rotating shafts 21 are connected to the rotating shaft holes 31.

[0043] When it is necessary to flip back (e.g.) Figure 5A , Figure 5B , Figure 8A and Figure 8B As shown), the left and right rear tilt supports are in place (the left and right rotating shafts 21 are connected to the rotating shaft holes 31), and the front and rear side tilt supports move back and forth (the front and rear rotating shafts 21 disengage from the rotating shaft holes 31), without contacting the hydraulic cylinder 2, ensuring no interference during lifting. The rear cargo box tilt support 9 is in working condition under the action of a pneumatic or electric cylinder; the four side tilt supports 8 on both sides (as shown) Figure 7 (As shown) is in a disabled state, and the cargo box is overturned.

[0044] When it is necessary to roll over (such as) Figure 6A , Figure 6B as well as Figure 9As shown), the left and right rear tilt supports move left and right without contacting the hydraulic cylinder (the left and right rotating shafts 21 are disengaged from the rotating shaft holes 31), ensuring no interference during lifting. The front and rear side tilt supports are in place (the front and rear rotating shafts 21 are connected to the rotating shaft holes 31). The rear cargo box tilt support 9 is in a disabled state. As needed, one side of the left and right side tilt supports 8 is in a working state while the other side is in a disabled state. They cannot be in a working state at the same time.

[0045] Side-tilting is equipped with a pneumatic or electric cylinder, and a pneumatic or electric cylinder is added on one side to control the middle tilting pin. The same applies to rear-tilting. Since the lifting angle of side-tilting is relatively smaller than that of rear-tilting, a limit valve is also required when side-tilting to ensure that the hydraulic cylinder does not over-lift.

[0046] Although the present invention has been disclosed above with reference to embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various different choices and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention is defined by the claims and their equivalents.

Claims

1. A single-cylinder dump truck with rear-tipping and side-tipping capabilities, characterized in that, Includes a body support beam (1), on which a hydraulic cylinder (2) and four hydraulic cylinder supports (3) are provided. The movable ball pin (10) at the top of the hydraulic cylinder (2) is connected to the bottom of the cargo box floor plate (7) through a pin shaft (6) and a fixing frame. Four rotating shafts (21) are provided around the hydraulic cylinder (2). A rotating shaft hole (31) is opened on the inner side of the hydraulic cylinder support (3). The rotating shaft (21) corresponds to the rotating shaft hole (31) and is detachably connected. A pneumatic or electric cylinder (4) is provided on the side of the hydraulic cylinder support (3) away from the hydraulic cylinder (2). The pneumatic or electric cylinder (4) can push the hydraulic cylinder support (3) to reciprocate on the support rail (5). A guide channel (12) is provided below the hydraulic cylinder support (3). The guide channel (12) is used to ensure that the hydraulic cylinder (2) will not deflect to the left or right when it is overturned and will not sway back and forth when it is overturned. The opening edge of the shaft hole (31) near the hydraulic cylinder (2) is provided with a chamfer structure to facilitate the entry and exit of the shaft (21); The hydraulic cylinder support (3) is provided with limiting devices on both sides for limiting its movement; The four rotating shafts (21) on the hydraulic cylinder (2) are angularly distributed, and the included angle between two adjacent rotating shafts (21) is 90°.

2. The single-cylinder rear-tipping and side-tipping dump truck according to claim 1, characterized in that, The hydraulic cylinder (2) is equipped with separate inlet and outlet ports.

3. The single-cylinder rear-tipping and side-tipping dump truck according to claim 2, characterized in that, The single-cylinder rear-tipping dump truck also includes a side-tipping support (8) and a rear-tipping support (9). The side-tipping support (8) is located on both sides of the vehicle body longitudinal beam (11), and the rear-tipping support (9) is located at the rear of the vehicle.

4. The single-cylinder rear-tipping and side-tipping dump truck according to claim 3, characterized in that, include: When it is necessary to flip over, the hydraulic cylinder supports (3) located on the left and right sides of the hydraulic cylinder (2) are in place, and the hydraulic cylinder supports (3) on the front and rear sides move back and forth, without contacting the hydraulic cylinder (2); the rear flip support (9) at the rear is in working condition under the action of pneumatic or electric cylinder; the four side flip supports (8) on both sides of the longitudinal beam of the vehicle body are in a state of failure, and the cargo box flips over. or When it is necessary to roll over, the hydraulic cylinder supports (3) located on the left and right sides of the hydraulic cylinder (2) move left and right, and do not contact the hydraulic cylinder (2). The hydraulic cylinder supports (3) on both the front and rear sides are in place; the rear rollover support (9) at the tail is in a state of failure. As needed, one side of the side rollover support (8) on the left and right sides is in a working state, and the other side is in a state of failure.

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