JP2717715B2 - Loading deck board - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a loading deck board that is provided on a platform and that enables smooth loading by filling gaps and steps between a truck and a platform.

[Prior Art] A deck board, which is widely used to facilitate loading of articles from a platform such as a collection / delivery center or a warehouse to a truck bed by a forklift or a wheelbarrow, as is well known, is a leading end of the platform. The deck plate is pivotally supported so that it can be set in a horizontal and vertical upright posture, and the deck plate is kept upright when not in use. The deck plate is rugged and heavy to withstand the load during use. Therefore, in order to improve the operability, the deck plate can be moved up and down by operating a hydraulic cylinder such as a hydraulic cylinder as shown in FIG. 4, for example. In the figure, reference numeral a denotes a platform, and a deck plate c is attached to a protruding end thereof by a support shaft b. A hydraulic cylinder d is pivotally mounted on a front wall portion of the platform a by a support shaft e, and a piston rod of the hydraulic cylinder d is provided. The end was pivotally connected to the lower surface of the deck plate c by a support shaft f.

[Problems of the prior art]

However, in the mechanism in which the fluid pressure cylinder d is provided vertically below the deck plate c as described above, unless the deck plate c has a considerably long vertical length h, the deck plate is extended by the expansion and contraction stroke of the fluid pressure cylinder d. There was a problem that the size could not be reduced because c was raised up horizontally and vertically. That is, there is a point that this balance mechanism is difficult to apply to the compact type having the short vertical length h.

[Means for solving the problem]

The present invention is intended to solve the above-mentioned problems of the conventional deck board. A mounting frame is provided at an edge of the platform, and the deck board is supported on the mounting frame so that the deck board can be erected horizontally and vertically. The links are pivotally connected with connecting pieces interposed between the links to form a diamond-shaped pantograph, a fluid pressure cylinder is provided between one opposing connecting pieces of the pantograph, and the other opposing connecting piece of the pantograph is provided. Are pivotally attached to the lower extension of the mounting frame and the lower surface of the deck plate, respectively.

[Action]

By providing the fluid pressure cylinder in the pantograph, the fluid pressure cylinder can be provided in parallel (horizontally) with the width direction of the deck plate, so that it is compact and easy to attach even to those having a short vertical length.

〔Example〕

Next, one embodiment of the loading deck board of the present invention will be described with reference to the drawings.

In the drawing, 1 is a platform, 2 is a channel-shaped rail horizontally fixed to an edge of the platform 1, and 3 is a moving along the rail 2 as the rollers 4, 4 roll in the rail 2. It is a mounting frame provided so as to be possible. Bearings 5,5 are provided at both ends of the mounting frame 3,
A deck plate 6 is pivotally supported by the bearings 5, 5 so that the deck plate 6 can be erected horizontally and vertically. The deck plate 6 has a striped steel plate on the upper surface to prevent slipping, a rib 7 on the lower surface for increasing the mechanical strength, and a lip 8 extending from the leading edge. In this embodiment, the deck plate 6 can be used by moving the mounting frame 3 along the rail 2 in accordance with the stop position of the track.

Reference numeral 9 designates four links 10, 10, 11, 11 between the connecting pieces 12a, 1
2b, 13a and 13b are interposed, and both ends of each link are pins 14 and 14.
Are connected to each other in a pantograph formed in a rhombic shape, and one of the opposite connecting pieces 12a, 12b of the pantograph 9 is formed.
The bearings 15 and 15 are fixed to the bearings 15 and 15, respectively.
Connected by 7,17. Further, a bearing 19 is fixedly mounted on a lower extension 18 integrally provided in a downward manner below the center of the mounting frame 3, and the bearing 19 is provided with one of the other connecting pieces 13 a, 13 b of the pantograph 9. Pivot 13a. In addition, a bearing 21 is provided in a rectangular frame-shaped mounting base frame 20 fixed to the lower surface of the deck plate 6 so as to be slidable in the vertical direction of the deck plate 6, and the other connecting piece 13b is pivotally attached to the bearing 21. . 22 is the mounting base frame 20
These bolts are screwed into the bearing and can adjust the position of the bearing 21 by the amount of screwing.

In the loading deck board configured as described above, since the connecting pieces 13a and 13b expand and contract in the opposite direction as the connecting pieces 12a and 12b expand and contract due to the expansion and contraction operation of the fluid pressure cylinder 16, the deck plate 6 is horizontal. And can stand upright. When the deck plate 6 becomes nearly horizontal and the interval between the connecting pieces 12a and 12b becomes wide, the load of the deck plate 6 acts strongly in the direction in which the fluid pressure cylinder 16 is extended by leverage of the pantograph, so that the load is offset. A balance spring may be provided between the connecting pieces 12a and 12b or between the connecting pieces 13a and 13b. At that time, a balance spring as shown in a deck board for which the applicant has already applied for a patent (filing date: October 11, 2001) may be employed.

〔The invention's effect〕

As described above, the loading deck board of the present invention can be compactly configured as a whole because the fluid pressure cylinder can be provided in parallel with the width direction of the deck plate by providing the fluid pressure cylinder on the pantograph including the four links. There are advantages.

[Brief description of the drawings]

1 is a perspective view of a loading deck board showing one embodiment of the present invention, FIG. 2 is a side view of FIG. 1, FIG. 3 is a front view of a pantograph, and FIG. 4 is a conventional loading deck board. It is the side view which showed the outline of. 1 ... Platform, 3 ... Mounting frame, 6 ... Decking board, 9 ... Pantograph, 10,11 ... Link, 12a, 1
2b, 13a, 13b: connecting piece, 15: bearing, 16: hydraulic cylinder, 18: downward extension, 19, 21: bearing.

Claims (1)

(57) [Claims] 1. A mounting frame is provided at an edge of a platform, and a deck plate is pivotally supported on the mounting frame so that the deck plate can stand horizontally and vertically, and four links are connected by connecting pieces between the links. To form a diamond-shaped pantograph, provide a fluid pressure cylinder between one opposing connecting piece of the pantograph, and attach the other opposing connecting piece of the pantograph to the lower extension of the mounting frame and the lower surface of the deck plate. Loading deck boards characterized by being attached to each other.