JPS6239018Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a single-rail skip hoist.

Traditionally, a skip hoist has been used to transport objects such as sand and sediment into a bucket and transport them upwards, but the bucket can be raised and lowered by following guide rails made of shaped steel on both sides. Since the system was configured to operate by rotating a bucket troller, there were problems such as a complicated structure and high equipment costs.

An object of the present invention is to provide a skip hoist which can solve the problems of the conventional device described above and which can raise and lower a bucket cart smoothly and stably.

That is, the present invention is a skip hoist in which a bucket cart with rollers is arranged along a guide frame so that it can be raised and lowered using a wire rope, etc., in which the guide frame is constituted by one rail, and an upper roller is placed above the belly surface of the bucket, and an upper roller is placed below the belly surface of the bucket. Auxiliary rollers are installed at positions below the lower roller on both sides of the lower roller and bucket, respectively, so that the upper roller and the lower roller can be raised and lowered along the guide frame, and a stopper portion of the upper roller is attached to the tip of the guide frame. At the same time, a notch for entering and exiting the lower roller is opened in the guide frame at a length position corresponding to the distance between the upper roller and the lower roller from the stopper part, and a cutout part for entering and exiting the lower roller is opened above the vicinity of the notch part. A guide frame for the auxiliary roller is arranged to an appropriate position so that the auxiliary roller can travel in contact with the outer surface of the guide frame, and a guide plate for moving the lower roller in and out is attached to the notch. It is a skip hoist.

An embodiment of the present invention will be described with reference to the drawings. Above the center line of the belly surface of the bucket 1, there is an upper roller 2,
A lower roller 3 is provided below, and an auxiliary roller 4 is provided below the lower roller 3 on both sides of the bucket 1 for reversing the bucket.A U-shaped roller 4 is provided on the mounting shaft 5 of the auxiliary roller 4 to which a wire rope 6 is attached. An arm 7 is provided, and the upper end of this wire rope 6 is hung on a hook of an electric hoist 9 fixedly provided on a frame 8.

The guide frame 10 for guiding the rotation and elevation of the upper roller 2 and lower roller 3 is a single rail type made of one H-beam, and is fixed to a frame 12 for fixing the hopper 11. ing. The details of the arrangement of the upper roller 2 and lower roller 3 with respect to the guide frame 10 are as shown in FIG. The upper part of this guide frame 10 is bent so as to be almost horizontal.
A stopper part 13 for temporarily stopping the upper roller 2 is provided at the tip thereof, and a stopper part 13 for moving the lower roller 3 in and out is provided at a length position corresponding to the distance between the upper roller 2 and the lower roller 3 from the stopper part 13. A notch 14 is provided with an opening. Furthermore, above the guide frame 10, a belt-shaped guide frame 16 for guiding the rotation and elevation of the auxiliary roller 4 is provided in parallel with the guide frame 10 via a fixing member 15.

In the present invention, the shape and dimensions of the notch 14 are important factors, and in order to always smoothly move the lower roller 3 in and out of the guide frame 10, the notch 14 is designed as shown in FIG. A guide plate 17 with a relatively large curvature is placed at the location of 14.
is provided.

To explain the function and effect of the skip hoist, when the electric hoist 9 is started in the state shown by the solid line in FIG. 1, the bucket 1 is raised by pulling the wire rope 6 upward. During this time, the upper roller 2 and the lower roller 3 rotate while contacting the inner surface of the guide frame 10. In this way, when the upper roller 2 reaches the notch 14, the bucket 1 starts to reverse (because the notch 14 is at the bending start position of the guide frame 10), and the upper roller 2 is stopped by the stopper 13. will continue until

The details of how the bucket 1 is reversed are as shown by symbols a, b, and c in FIG. The rotation is performed using the upper roller 2 as a fulcrum and the distance between the upper roller 2 and the auxiliary roller 4 as the reversal radius.
That is, this reversing operation involves the upper roller 2 moving upward along the upper bend of the guide frame 10, the lower roller 3 leaving the guide frame 10 through the notch 14, and This is done by rotating the auxiliary roller 4 while contacting the outer surface of the guide frame 16.

The loose items in bucket 1 are numbered c in Figure 4.
The bucket bag 1 is thrown into the hopper 11 at the position shown in FIG.

As a drive device for raising and lowering the bucket cart 1, it is of course possible to use a combination of a speed reducer 18, a winding drum 19, etc. as shown by the two-dot chain line in FIG.

As mentioned above, the skip hoist of the present invention has a guide frame composed of a single rail, so the device structure is simple and can be downsized, and the amount of materials used can be reduced. It is installed at a position below the roller, and the distance between this auxiliary roller and the lower roller is the reversal radius, so the reversal radius is larger than the reversal radius of the bucket, which is the distance between the upper roller and the lower roller. The operation can be performed more smoothly and stably, and since the guide plate is attached to the notch, the lower roller can move in and out smoothly at this notch (rail branching part), which makes it easier to raise and lower the bucket. There are practical benefits such as smooth and stable operation at all times and easier maintenance of the equipment.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a front view, FIG. 2 is a left side view of a portion of FIG. A partially enlarged view of Figure 1 showing the state of reversal, Figure 5 is a partial enlargement of Figure 4.
It is a sectional view taken along the line - in the figure. 1...Bucket, 2...Upper roller, 3...Lower roller, 4...Auxiliary roller, 5...Mounting shaft, 6
... wire rope, 7 ... arm, 9 ... electric hoist, 10 ... guide frame, 13 ... stopper section, 14 ... notch section, 16 ... guide frame, 17 ... guide plate.

Claims (1)

[Scope of utility model registration request] In a skip hoist, a bucket cart with rollers is arranged along a guide frame so that it can be raised and lowered using a wire rope, etc., and the guide frame is composed of one rail, with an upper roller above the belly surface of the bucket, a lower roller below, and both sides of the bucket. An auxiliary roller is attached to a position below the lower roller on the surface, the upper roller and the lower roller are movable up and down along a guide frame, and a stopper part for the upper roller is provided at the tip of the guide frame. A notch for entering and exiting the lower roller is opened at a length position corresponding to the distance between the upper roller and the lower roller from the stopper portion, and the auxiliary roller is extended from the vicinity of the notch to an appropriate position above. A skip hoist comprising a guide frame arranged so that an auxiliary roller can run in contact with the outer surface of the guide frame, and a guide plate for moving the lower roller in and out in the notch.