JPH10183520A - Bucket elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid an overload without giving any shock even when a material is bitten between buckets and a bottom receiving body by suspending the bottom receiving body made of a flexible material at the bottom section of the casing of a bucket elevator along the locus of the buckets, and fitting a wheel passing while pressing the bottom receiving body to at least one bucket. SOLUTION: A bottom receiving body 22 made of a flexible material is suspended on the inside face of a casing 2, and the bottom section of the bottom receiving body 22 is made slightly larger than the locus drawn by the tip sections of buckets 19. A wheel 23 fitted to the back face of a bucket 19 presses the bottom receiving body 22 downward when it passes through the lower section of the casing 2. When a material is bitten between the buckets 19 and the bottom receiving body 22, the flexible bottom receiving body 22 is deformed downward to allow the buckets 19 to pass through. When the wheel 23 fitted to the bucket 19 passes while pressing the bottom receiving body 22, the shape of the bottom receiving body 22 is returned to the original shape. The bottom receiving body 22 is freely deformed, and an overload can be avoided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bucket elevator for transporting bulk materials such as aggregates upward.

[0002]

2. Description of the Related Art In a bucket elevator, the material fed from a material inlet may not be scooped by the bucket and may spill to the bottom of a casing, and a part of the material discharged at the upper part of the elevator remains in the bucket. This may spill down to the bottom of the casing, causing material to gradually build up on the bottom of the casing.

[0003] Therefore, it has been proposed that a bottom plate made of a steel plate is attached to the bottom of the casing so as to follow the locus of the bucket, and the distance between the locus of the bucket and the bottom body is reduced to reduce material accumulation. I have.

[0004]

However, in the above-described conventional bucket elevator, when the material is caught between the bucket and the bottom, the overload is avoided because the bottom is fixed. This may cause problems such as damage to the bucket and stop of the motor.

SUMMARY OF THE INVENTION In view of the above, the present invention provides a bucket elevator capable of avoiding an overload without giving any impact even if a material is bitten between a receiving bottom of a casing bottom and a bucket. As an issue.

[0006]

According to the present invention, in order to solve the above-mentioned problems, a chain wheel is disposed at upper and lower ends of a casing having a material discharge chute at an upper portion and a material inlet at a lower portion. At the same time, an endless chain is wound between the chain wheels, and in the bucket elevator in which a number of buckets are mounted on the chain at predetermined intervals,
A hanging bottom made of a flexible material is hung down along the trajectory of the bucket at the bottom of the casing,
At least one of the buckets is provided with wheels that pass while pressing the bottom body.

[0007]

According to the bucket elevator of the present invention, even if the material to be conveyed between the bucket and the receiving bottom bites, the receiving bottom with high flexibility is extended downward. It deforms and passes through the bucket. As described above, the receiving bottom is freely deformed, thereby avoiding biting of the material.

When the bucket advances while scooping the material on the receiving bottom, the material on the receiving bottom is deformed so as to be deviated toward the traveling direction of the bucket, and the material accumulated on the bottom cannot be scooped. When the wheels attached to the bucket pass while pressing the bottom, the bottom can be returned to the original shape, and the material collected at the bottom can be scooped.

[0009]

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

The bucket elevator 1 winds an endless chain 5 between a lower chain wheel 3 and an upper chain wheel 4 in a casing 2 as shown in FIG.
The lower chain wheel 3 is suspended by the chain 5 so as to be in a free state.

As shown in FIGS. 2 and 3, the lower chain wheel 3 has a shaft 6 penetrated therethrough, both ends of which are supported by bearings 7, and a motor 9 disposed on a bracket 8 on the side of the casing 2. To rotate via the drive chain 10.

As shown in FIGS. 4 and 5, a shaft 11 is inserted through the upper chain wheel 4 and both ends thereof are supported by a take-up unit 12, and the take-up unit 12 is connected to both sides of the casing 2. The upper chain wheel 4 is vertically movably mounted on a guide member 13 fixed to the surface so as to be vertically movable.

A screw rod 14 is erected below the take-up unit 12, and the screw rod 14 is loosely fitted in a guide hole of a guide member 15 fixed to the casing 2. An adjusting nut 16 screwed onto the screw rod 14 and the guide member 1
The spring body 17 is interposed between the spring body 5 and the adjusting nut 16, and the spring body 17 is appropriately compressed by rotating and lowering the adjustment nut 16, and the restoring force urges the take-up unit 12 to be pushed upward. The chain 5 is nervous. In addition, a dust cover 18 is attached to prevent dust from scattering.

As shown in FIG. 1, a number of buckets 19 are mounted on the chain 5 at predetermined intervals, and a material inlet 20 is provided at a lower portion of the casing 2 and a material discharge chute 21 is provided at an upper portion of the casing 2. The material charged into the material inlet 20 is lifted up by the traveling bucket 19 and discharged from the material discharge chute 21.

Numeral 22 denotes a bottom member made of a flexible material such as rubber. The bottom portion 22 is fixed to both ends of the bottom of the casing 2 as shown in FIG. Bottom 2
The bottom of 2 is curved so as to have a radius of curvature slightly larger than the locus drawn by the tip of the bucket 19. Further, the side surface is brought into contact with the inner side surface of the casing 2 to prevent the material from spilling downward.

A wheel 23 is rotatably mounted on the back of the bucket 19 by means of a shaft 24 so that the wheel 23 passes through the lower part of the casing 2 while pressing the receiving bottom 22 downward. ing. The wheels 23 play a role in correcting the deformation of the receiving bottom body 22, and need not be attached to all of the buckets 19, but may be attached at appropriate intervals.

When the bucket 19 is run to convey material, the lower chain wheel 3 is fixed, so that the bucket 19 does not swing up and down and keeps a predetermined interval along the receiving bottom 22. Pass through while standing.

As shown in FIG. 6, when the material is caught between the bucket 19 and the bottom body 22 passing along the bottom body 22, the bottom body 22 having high flexibility is moved downward. It is deformed to extend and passes through the bucket 19. Thus, even if the material is caught between the bottom body 22 and the bucket 19, the bottom body 22 is freely deformed and the material is avoided from being caught.

Further, since the bucket 19 advances while scooping the material on the bottom body 22, the material on the bottom body 22 is deflected toward the traveling direction of the bucket 19 and deforms the bottom body 22. When the bottom body 22 is deformed, the material accumulated at the bottom cannot be scooped by the bucket 19, but when the wheels 23 attached to the bucket 19 reach the bottom body 22 as shown in FIG. Then, the receiving bottom body 22 can be pulled back to return to the original shape, and the material accumulated at the bottom can be scooped. Also, if the bottom body 22 returns to its original shape, the bucket 19 does not strongly contact the bottom body 22, so that wear of the bottom body 22 can be reduced.

As described above, the receiving bottom 2 made of a flexible material
2 is suspended substantially along the trajectory of the bucket 19, so that even if the material is caught between the bucket 19 and the receiving body 22, the receiving body 22 is freely deformed and the material is caught. Since the deformation of the bottom body 22 made of a flexible material is corrected by the wheels 23 attached to the bucket 19, it is possible to scoop without leaving the material on the bottom body 22. it can.

In this embodiment, an example in which the lower chain wheel is fixed has been described. However, the present invention is not limited to this, and the lower chain wheel may be mounted to be vertically movable by a take-up unit. Further, the receiving bottom body 22 may be mounted so as to be vertically movable integrally with the lower chain wheel.

[0022]

As described above, according to the present invention, a bottom made of a flexible material is hung on the bottom of the casing so as to substantially follow the trajectory of the bucket. Since the wheels that pass while pressing the bottom body are attached, even if the material is caught between the bottom body and the bucket, the bottom body is freely deformed and an overload due to the biting of the material is avoided. Can be. Further, even if the receiving bottom is deformed, the deformation can be corrected by the wheels attached to the bucket, and the bottom can be scooped without leaving any material.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view showing an embodiment of the present invention.

FIG. 2 is an enlarged view in which a part of a main part in FIG. 1 is cut away.

FIG. 3 is a view in which a part of FIG.

FIG. 4 is an enlarged view of a part of FIG.

FIG. 5 is a view taken in the direction of arrow BB with a part of FIG. 4 omitted;

FIG. 6 is an explanatory view showing a state in which a material has been bitten between a receiving bottom body and a bucket.

FIG. 7 is an explanatory view showing a state in which a bucket with wheels attached passes through a casing bottom.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Bucket elevator 2 ... Casing 3 ... Lower chain wheel 4 ... Upper chain wheel 5 ... Chain 19 ... Bucket 22 ... Receiving bottom body 23 ... Wheel

Claims (1)

[Claims] 1. A chain in which a material discharge chute is provided at an upper portion and a chain wheel is provided at both upper and lower ends in a casing having a material input port provided at a lower portion, and an endless chain is wound between the chain wheels. In a bucket elevator in which a number of buckets are mounted on a chain at predetermined intervals, a receiving bottom body made of a flexible material is hung on the bottom of the casing so as to substantially follow the trajectory of the bucket,
A bucket elevator, wherein a wheel that passes while pressing the bottom body is attached to at least one of the buckets.