JPS62199545A - Damp sheet operated by exhaust gas - Google Patents

Abstract

PURPOSE:To make it possible to cover a dump sheet over cargo, easily and surely, by extending and retracting the dump sheet arranged on the upper surface of the cargo by means of a long bag which expands and contracts in association with the charge and discharge of exhaust gas. CONSTITUTION:After cargo 13 such as gravel or the like is fully loaded on a cargo bed while a dump sheet 7 is retracted in the rear side of the cargo bed 1, as a cock 3 in bifurcated pipe 2 is closed to allow exhaust gas to flow into a long back 5 through a hose 4 so that the long bag 5 is extended. Thereby, the dump sheet 7 is advanced while retainers 9 on both sides of the dump sheet 7 is slid on wires 8, and therefore, covers the cargo bed 6 and the cargo 13, entirely. At this time both sides of a weight plate rod 10 is stored in U-like stoppers 11, and then a switch 12 is turned on to open the cock 3. When the cargo bed 6 is inclined rearward to dump the cargo 13, both sides of the weight plate rod 10 are released from the stoppers 11, and simultaneously, the dump sheet 7 is again retracted rearward while the retainers 9 are slid.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention is used in a dump truck whose loading platform is tilted rearward or sideways, and relates to a dump seat used therein.

[Conventional technology and its problems]

Conventional dump seats that cover the cargo bed of dump trucks are equipped with a frame sheet that rotates around the side of the cargo bed, and are separated on both sides of the cargo bed.When covering the cargo bed, the motor and gears are turned on when the driver's seat is turned on. When the sheet is activated, the frame sheets on both sides are lifted up and rotated, and the tips of the sheets come down to cover it. However, when the width of both sheets is not covered, the width of the sheet sags from the side of the loading platform. Since only the liquid can be removed, even when covered, the edges of the images cannot reach each other, leaving a gap in the center. Therefore, there is a problem that the loaded material tends to spill from the center part, or the rear part cannot be sufficiently covered and spills easily. [Technical means for solving the problem] The present invention solves the problem. This was made to solve the problem, and if this is explained with drawings, a bifurcated pipe (2) is fully connected to the exhaust port of a muffler or exhaust pipe (1), and a cock (3) that can be opened and closed is attached to one of the bifurcated pipes. and the other is connected to an airtight and bendable long bag (5) via a hose (4), and the long bag (5) is attached to the front and back of the dump sheet (7) that covers the loading platform (6) of the dump truck. It is integrated with this at a key point that penetrates the sheet (7), and one end of it is fixed to the fixed side (6A) of the back or one side of the loading platform (6), and both lateral sections of the sheet (7) and the loading platform ( A wire (8) or rope or guide rail provided at both lateral ends or front and rear ends (if the fixed side (6A) is one lateral part) of 6) is provided on both sides of the slidable fixed side. The loading platform (6) is configured such that the non-fixed side of the loading platform (6) is lifted and tilted as necessary with the fixed side as an axis. ) and another automatic opening switch (2) provided on the stopper 0]).

In this case, the hose (4) may be integrally formed with the bifurcated pipe (2), and the wire (8) or the lobe may be an elastic body that expands and contracts itself, or the tip may be connected to a spring or the like. is desirable. Also, put the long bag (5) on the dump sheet (7).
It is preferable that the sheet (7) be attached to the center of the sheet (7) so as to pass through the front and back of the sheet (7) in the direction of expansion and contraction, or in the form of a plurality of parallel strips.

In addition, a downward constriction (IIA') is provided at the back of the lower side of the approximately U-shaped stopper αη, so that the weight plate rod 0*
It is preferable that the loading platform (6) be made stable so that it will come off naturally only when the loading platform (6) is tilted backward by a predetermined angle or more.

〔Example〕

A metal bifurcated pipe (2) is tightly connected to the exhaust port of the dump truck's exhaust pipe (1), an electric shunter cock (3) is attached to one end, and a heat-resistant resin hose (4) is tightly connected to the other end. Then, attach the tip of the dump sheet (
7) is closely connected to a long bag (5) formed into a belt-shaped airtight bag body of the same length, and this long bag (5) is brought into close contact with the upper center surface of the dump sheet (7), and the tips of these are tightly connected. Approximately 1 on the side
A heavy metal plate rod on'f is attached to a length reaching both sides, and the aforementioned metal substantially U-shaped stoppers α to catch it are attached to both sides of the front end of the loading platform (6). Further, as mentioned above, wires (8) are provided at the upper portions of both sides of the loading platform, and the sheets (7)'e are connected at equal intervals with several slidable metal fasteners (9).

In addition, connect the electric wires led from the power supply inside the vehicle to the stoppers αυ on both sides, and also connect the cock (3) on one side of the bifurcated pipe.
operably connected to the metal plate rod αQ.
The wiring is such that when the cock (3) is seated in the stopper Ql), an electric current flows to open the cock (3), and the cock (3) is closed by a closing switch (not shown) on the driver's seat. The opening mechanism for the cock (3) is preferably that the stopper Ql) doubles as the automatic opening switch (11) as described above, but if it is installed in the driver's seat or if the pressure in the bifurcated pipe (2) exceeds a certain level, the cock (3) will open automatically. There are several possible methods of opening the door, and any of these methods can be implemented using known technical means.

[Effect]

First, as shown in Fig. 1, the load α3 such as gravel is placed on the dump seat (7)' of the present invention so as to be placed toward the rear of the loading platform (1).
If the cock (3) of the bifurcated pipe (2) is opened at that time, the exhaust gas will be discharged from there. Now, when the cock (3) is closed, the exhaust gas whose outlet is blocked will be discharged from the hose (on the side of the bifurcated pipe (2) without the cock (3)).
4) Proceed inside and enter the long bag (5), whose expansion force becomes a force that tries to straighten it, and accordingly, as shown in Figure 2, the dump sheet (7) moves to the stops on both sides of it. While sliding the tool (9) on the wire (8), move the tip forward, and as shown in Figure 3, move the weight plate rod αQ at the tip until it covers the entire loading platform (6) and the loaded object α1. Both sides fit within the substantially U-shaped stoppers (11), and at that time, switch a2 is activated to open the cock (3) and the exhaust gas is normally discharged from there again.

Next, as shown in Fig. 4, when the loading platform (6) is tilted backwards to drop the loaded object, both sides of the weight plate rod 00 are suspended.
At the same time as it comes off from 0υ, the dump seat (7) has already lost the exhaust gas pressure in the attached long bag (5), so it slides down the stops (9) on both sides and is moved to the rear again. Become.

〔effect〕

According to the present invention, the entire load can be covered without creating a gap between the sheets on both sides as in the conventional case, and spillage from the center and rear can be prevented. Further, the seat can be hung arbitrarily and easily from the driver's seat, and opening is also done automatically, and the seat does not fly out to the side. Furthermore, there is no need for any motors, and no frame is required for the seat, resulting in extremely low costs.
It has many benefits, such as preventing battery consumption and making it easy to replace the seat if it is damaged.

[Brief explanation of drawings]

The drawings are all schematic diagrams of the main parts near the loading platform of the dump truck according to the present invention, viewed diagonally from above and behind, and FIG. 1 shows the state before covering the sheet, FIG. 2 shows the state during the covering process, and FIG. After that, Figure 4 shows the time of dropping the load.

Claims (1)

[Claims] A bifurcated pipe is connected to the exhaust port, a cock is provided on one of the bifurcated pipes, and the other is connected with a hose to an airtight and bendable long bag, and the long bag covers the front and rear of the dump sheet that covers the loading platform of the dump truck. It is integrated with this at a key point where it penetrates, and one end of it is fixed to the rear of the loading platform or the fixed side of one side, and it is provided on both lateral sides of the sheet and both lateral ends or the front and rear ends of the loading platform. A roughly U-shaped structure in which weight plate rods are attached to the non-fixed end of the sheet, and both ends are placed on both sides of the non-fixed side of the loading platform. The loading platform is designed to fit into a stopper, and the non-fixed side of the loading platform is lifted up as necessary with the fixed side as an axis, and the cock is opened and closed by a close switch on the driver's seat and another automatic open switch. Features a dump seat that operates using exhaust gas.