JPS626068Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a skip hoist for transporting solid objects such as crushed stone and coal (hereinafter simply referred to as objects to be transported) from a lower floor surface to an upper floor surface, and particularly, The present invention relates to a skip hoist that is equipped with a bucket that ascends with objects to be transported along guide rails erected in the direction and tilts on an upper floor surface to discharge the objects.

A conventional skip hoist of this type has a first guide rail located on the loading port side and a first guide rail located on the loading port side between a loading port for loaded items on the lower floor and an unloading port for loading transported items on the upper floor. The second guide rail located on the opening side is arranged parallel to each other and erected almost vertically, and the upper ends of both guide rails are unloaded parallel to each other and curved toward the entrance until they become almost horizontal. A first guide roller and a second guide roller, each of which is rotatably supported by a bucket that can freely accommodate conveyed objects on both guide rails, are fitted to both guide rails so as to be rotatable. installed so that it can be moved freely,
In addition, the lower end of the arm is rotatably supported on this bucket, and the end of the rope that is wound up and down by a hoist installed on the upper floor is fixed to the upper end of this arm. The bucket cart containing objects to be transported is raised by a hoisting machine along both guide rails, the bucket is lowered at the curved upper end of both guide rails to dump the objects, and then hoisted up. The machine is driven in the lowering direction to lower the bucket tote along both guide rails, and during its descent, the bucket tot is automatically raised up by the guidance of the guide rails.

However, in the case of this conventional skip hoist, the lower end of the arm is simply rotatably supported by the bucket cart, and the upper end is free to move relative to the bucket cart, so the lowering speed of the rope is limited. If the upper end of the arm moves loosely relative to the bucket due to fluctuations, etc., the center of gravity of the arm shifts irregularly due to this movement, and when the bucket tries to return to its standing position, the overall center of gravity of the bucket and the arm shifts in the direction of collapse. This may result in the bucket not being able to return to its upright position.Also, when loading objects from the loading port into the bucket, the arm may be stuck in the loading port due to slack in the rope. There are drawbacks such as the fact that it may tilt toward one side and obstruct this loading operation.

SUMMARY OF THE INVENTION An object of the present invention is to provide a skip hoist which eliminates the drawbacks of the prior art, allows the bucket cart to be reliably raised and returned to its original position, and does not interfere with the loading of objects to be transported.

As a means for achieving the above object, the present invention provides a rotatable guide roller at the upper end of the arm, and this roller is rotatably fitted to the first guide rail to prevent free movement of the arm. This is what I did.

Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2 showing an embodiment of the present invention, a belt conveyor 2 is provided on a lower floor surface 1 as a loading port for conveyed objects, and is spaced upward from this lower floor surface 1. A hopper 4 is provided on the upper floor surface 3, which serves as an opening for loading and unloading objects to be transported. In the space between the end of the belt conveyor 2 and the hopper 4 from the lower floor surface 1 to above the hopper 4 on the upper floor surface 3, a pair of first guide rails 5 and a pair of second guide rails 6 are spaced apart from each other and are substantially parallel to each other. The upper and lower ends of the guide rails 5 and 6 are supported by the lower floor surface 1 and the upper floor surface 3, respectively, and are erected almost vertically, and the upper ends 5A and 6A of the first and second guide rails 5 and 6 are directed toward the hopper 4. They are almost curved toward each other until they are almost horizontal.
In addition, the lower ends 5B, 6B of both guide rails 5, 6
is inclined so as to approach the conveyor 2 as it goes to the lower end. Although not shown, the first and second guide rails 5 and 6 each consist of a pair, and the pairs of guide rails are arranged opposite each other on both sides of the conveyor 2 and the hopper 4 in the width direction (front and back direction in the drawing). ing.

A box-shaped bucket 7 with an open top is interposed between the pair of first and second guide rails 5 and 6, and this bucket 7 has a pair of buckets rotatably supported on both sides thereof. A first guide roller 8 and a pair of second guide rollers 9 (only the one on one side is shown) are rotatably mounted on the pair of first and second guide rails 5 and 6. By fitting them together, they can move up and down along the guide rails 5 and 6. The first and second guide rollers 8 and 9 are arranged vertically offset from each other. A pair of arms 10 are attached to the support pins 8A of the pair of first guide rollers 8.
The lower ends of the arms 10 are rotatably supported, and a beam 11 is installed between the upper ends of both arms 10 with both ends fixed. Second guide rollers 12 are rotatably supported on the outer surface of the upper end of the arm 10, and this third guide roller 1
2 are rotatably fitted to the pair of first guide rails 5, respectively. A pair of brackets 13 are protruded from both ends of the upper surface of the beam 11, and each of the brackets 13 supports a pin 14, respectively.

At the left position of the hopper 4 on the upper floor surface 3, a hoisting machine 16 driven by a drive machine (not shown) is mounted via a frame 15, and directly above the hopper 4 is a first sheave 17. Via the frame 15,
Further, a second sheave 18 is installed at the lower right position of the hopper 4, and the hoisting machine 16
A pair of ropes 19 let out from the first sheave 1
7 and the second sheave 18, the ends thereof are rotatably locked to a pair of pins 14 which are pivotally mounted on the beam 11, respectively.

The operation of the skip hoist having the above configuration will be explained.

When loading objects from the conveyor 2, the bucket 7 is suspended and placed on the lower floor surface 1. When a predetermined amount of objects to be transported is stored in the bucket 7, the hoist 16 starts hoisting the bucket 7, and the bucket 7 is moved so that the first and second guide rollers 8 and 9 roll on the first and second guide rails 5 and 6. As a result, it rises almost vertically in an upright state while being guided by both rails 5 and 6. This bucket 7
passes through the upper curved portions 5A and 6A of the first and second guide rails 5 and 6, and gradually falls down, and when it reaches the uppermost end, dumps the accommodated objects into the hopper 4.

After this dumping is completed, the hoist 16 lowers the rope 19, and the bucket 7 descends. As the bucket 7 passes through the upper curved portions 5A and 6A of the first and second guide rails 5 and 6, it gradually rises due to its guidance. At this time, the third guide roller 12 of the arm 11 with the end of the rope 19 attached to the upper end is rotatably fitted to the first guide rail 5 and guided, so the arm 11 is free to move relative to the bucket 7. There's nothing to do. Therefore, the bucket 7 can move to the first and second positions without being affected by the fluctuation of the center of gravity of the arm 11.
Following the guidance of the guide rails 5 and 6, an appropriate standing operation is reliably performed.

Finally, the bucket 7 passes through the lower end inclined parts 5B and 6B of the first and second guide rails 5 and 6, and is placed on the lower floor surface 1, and is again loaded with objects to be transported from the conveyor 2. At this time, the arm 10 moves the third guide roller 12 at the upper end to the second guide rail 5.
By fitting into the inclined part 5B of the conveyor 2, it is in a state along the inclined part 5B and is tilted backward in the opposite direction to the conveyor 2, so that it does not interfere with the loading operation of objects to be conveyed from the conveyor 2.

In the above embodiment, a case has been described in which the lower end portions of the first and second guide rails are tilted backward in the direction opposite to the conveyor, but the rearward tilting of the lower end portions of both guide rails can be omitted. because,
By fitting the third guide roller at the upper end to the first guide rail, the arm is maintained in an upright position along the first guide rail, and even if the rope etc. becomes slack, it will not move loosely with respect to the bucket, so the arm will not move around the conveyor. This is because it will not interfere with the loading work.

As described above, according to the present invention, the upper end of the arm is also guided along the first guide rail, so that the return to standing operation at the upper end of the guide rail is reliably performed, and the guide Loading of transported objects at the lower end of the rail is
This is done reliably without being hindered by the presence of the arm.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is an overall side view, and FIG. 2 is an enlarged perspective view of a bucket bag. 1... Lower floor surface, 2... Belt conveyor, 3...
Upper floor surface, 4...Hotsupa, 5...Guide rail, 6
...Second guide rail, 7...Bucket, 8...
First guide roller, 9...Second guide roller, 1
0... Arm, 12... Third guide roller, 14
...Pin, 16...Hoisting machine, 17...First sheave, 18...Second sheave, 19...Rope.

Claims (1)

[Claims for Utility Model Registration] 1. A pair of first guide rails located on the loading port side between a loading port for transported objects on the lower floor surface and a loading port for loading transported objects on the upper floor surface. and a pair of second guide rails located on the unloading port side are arranged parallel to each other and erected almost vertically, and the upper ends of both guide rails are arranged parallel to each other and face toward the unloading port. A first guide roller and a second guide roller are attached to both guide rails, each of which has a bucket which is curved until it is almost horizontal, and which is rotatably supported on the side of the bucket. The lower end of the arm is rotatably supported on the bucket, and the upper end of the arm is the end of the rope of the hoist installed on the upper floor surface. In the skip hoist, a third guide roller is rotatably supported at the upper end of the arm, and the third guide roller is rotatably fitted to the first guide rail. Skip hoist. 2. The skip hoist according to claim 1, wherein the lower end portions of the first guide rail and the second guide rail are inclined so as to approach the loading port as they go toward the lower ends.