JPH1120920A - Throw-in device for bucket conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide with a simple structure and at low cost a throw-in device for a bucket conveyor which can decelerate a throwing speed into a bucket to prevent the dispersion of bulk and occurrence of dust. SOLUTION: The rear end of a shutter pot 5 is rotatably journaled by the rear side of the bottom opening of a throw-in chute 4, which is disposed above the horizontal carrying path of a bucket conveyor 2, in the direction in which a bucket 3 is moved. When the bottom surface of the shutter pot 5 is engaged with and held nearly horizontally by the edge of the opening of the bucket 3 moving below it, the shutter pot 5 receives the bulk dropped from the throw-in chute 4 at the top side thereof and stores and disperses it, and when the bottom surface of the shutter pot 5 is disengaged from the edge of the opening of the bucket 3, the shutter pot 5 is oscillated by its own weight to decelerate and drop the bulk into the bucket 3 along the top surface thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for putting scatters into buckets of a bucket conveyor.

[0002]

2. Description of the Related Art Conventionally, in the case of transporting scattered material such as grains, a bucket in which a large number of buckets are attached to a circulating drive chain as described in, for example, Japanese Utility Model Publication No. 62-43333. A conveyor is used.

As shown in FIG. 6, a large number of buckets A2 are swingably supported between a pair of chains A1 circulating and driven in parallel to the left and right. The spatter is thrown into the bucket A2 from the discharge port A4 of the throwing hopper A3 installed above the halfway throwing position F, the bucket A2 is inverted at the discharge position R, and the spatter is discharged from the bucket A2. Is configured.

[0004] A discharge plate A5 is provided at the discharge port A4 so as to be openable and closable.
At the position facing the gap between the two, the shielding plate A
5 closes the discharge port A4 and receives the spatter falling from above, opens the discharge port A4 only when the bucket A2 has moved directly below the discharge port A4, and throws the spatter into the bucket. ing.

[0005]

However, in the above-described bucket conveyor, when the cut-off plate is opened and the powder is poured into the bucket from the discharge port of the charging hopper,
Collision with the bottom surface of the bucket at a drop speed corresponding to the drop from the discharge port of the input hopper to the bottom surface of the bucket causes problems such as scattering of dust around the periphery and generation of dust.

In addition, a synchronous interlocking mechanism for closing the shut-off plate when the discharge port faces the gap between adjacent buckets in accordance with the movement timing of the bucket is required, so that the cost of the entire bucket conveyor is increased. There were also problems.

Accordingly, the present invention solves the above-mentioned problems of the prior art, and provides a bucket conveyor charging device which can reduce the charging speed to the bucket to prevent scattering of dust and generation of dust with a simple structure. The purpose is to provide at low cost.

[0008]

In order to achieve the above object, a bucket conveyor charging device according to the present invention comprises: a lower end opening of a charging chute installed above a horizontal conveying path of the bucket conveyor, the rear side of the bucket moving direction; The rear end portion is rotatably supported around a horizontal axis orthogonal to the moving direction,
When the lower surface is engaged with the opening edge of the bucket moving downward and is held in a substantially horizontal position, the opening edge of the bucket is formed in a tray shape narrower than the facing interval between the left and right inner sides of the bucket.
The spout that has flowed down the throwing chute is received on the upper surface, and when the lower surface is disengaged from the opening edge of the bucket with the movement of the bucket, the front end swings into the bucket by its own weight and moves to the upper surface. And a shutter pot for causing the scatter to flow down into the bucket.

[0009]

In the state where the lower surface of the shutter pot is engaged with the opening edge of the bucket moving downward and is held in a substantially horizontal posture, the scattered material flowing down inside the throwing chute is placed on the upper surface of the shutter pot. The shutter pot is diffused right and left in the width direction of the shutter pot while temporarily staying here.

Then, when the lower surface of the shutter pot is disengaged from the opening edge of the bucket due to the forward movement of the bucket, the front end of the shutter pot swings into the bucket by its own weight, so that the shutter pot stays on the upper surface of the shutter pot. The diffused material flows down at a substantially uniform speed in the width direction of the bucket along the upper surface.

When the bucket is further advanced, the rear side of the opening edge engages with the lower surface of the shutter pot whose front end is inclined downward and pushes up, so that the scattered material flowing down the inside of the throwing chute is removed. Then, it is received by the upper surface of the shutter pot which has become substantially horizontal again, and the inflow of the scattered material into the bucket is blocked.

As the bucket advances further, the portion engaging with the lower surface of the shutter pot moves from the rear side of the opening edge of the preceding bucket to the front side of the opening edge of the subsequent bucket, and then the tendency edge of the subsequent bucket. When the front side of the shutter pot is disengaged from the lower surface of the shutter pot, the front end portion of the shutter pot swings again into the subsequent bucket to cause the scatter to flow down into the subsequent bucket.

The above-described operation of the shutter pot is repeated in accordance with the movement of the bucket, and the powder is intermittently supplied to each bucket from the input chute.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. FIG. 1 is a side view showing an embodiment of a bucket conveyor charging apparatus according to the present invention, and FIG. 2 is a view of the bucket conveyor shown in FIG. 1 as viewed from the rear in the transport direction of the bucket conveyor. The chute 4 is provided above the position where the bucket 3 passes in the horizontal conveying path of the conveyor 2, and the chute 4 is for charging the scattered material such as grains into the bucket 3, and the chute 4 is discharged from the lower end opening 4 A of the chute 4. A shutter pot 5 that swings between a substantially horizontal position for receiving the scattered material and an inclined position for causing the scattered material to flow down into the bucket 3 from the opening 4A.

The bucket conveyor 2 includes a dust cover 6
Guide rails 7 attached to the left and right inside
Chain 8 supported and circulated and driven
Each of the buckets 3 is swingably supported by these chains 8 by a pair of pivot portions 9 protruding to both outer sides at the upper center.

Further, inside the dustproof cover 6, a pair of swing regulation guides 10 for suppressing the swing during loading into the bucket 3 are provided with an opening edge front side 3A and an opening edge rear side 3B of the bucket 3. Are provided so as to be opposed to each other from above from left and right sides.

Below the pivots 9 on both outer sides of the bucket 3, a tilting lever 11 is provided continuously. The tilting lever 11 has a bucket 3 for transporting the scattered material provided downstream of the bucket conveyor 2. When the bucket 3 is moved to a discharge position (not shown), the bucket 3 is rotated around the pivot portion 9 by contacting the tilt cam fixed to the discharge position, and is integrated with the tilt lever 11. Is tilted, and the powder in the bucket 3 is discharged here.

A charging chute 4 constituting a main part of the charging device 1 has an upper portion penetrating through a dust cover 6 of the bucket conveyor 2 and is exposed to the outside, and a charging port 4B is opened at an upper end. , Is attached to the dustproof cover 6 via a support plate 12.

Inside the charging chute 4, a charging port 4 is provided.
A bottom surface 4C for guiding the scattered material supplied from B to the lower end opening 4A is formed. Further, a flow rate adjusting damper 13 operable from the outside is provided inside the charging chute 4.

As shown in FIG. 2, inside the dustproof cover 6, the throwing chute 4 is formed so as to widen in the left-right direction toward the lower end opening 4A in order to enhance the diffusion effect of the scattered material. A skirt portion 14 is provided around the outside of the lower end opening 4A.

The skirt portion 14 is provided on the support plate 12.
Are suspended from the front and rear by four suspension bolts 15 so that the mounting position can be adjusted in the vertical direction. The suspension bolts 15 are formed so as to expand downward in the left and right direction, and in the vicinity of the lower end opening 4A of the input chute 4. A gap S through which air flows is formed between the outer peripheral portion and the upper inner peripheral portion of the skirt portion 14 in order to promote discharge of the spatter.

A pair of bearings 17 for holding both sides of a support shaft 16 rotatably attached to the rear end of the shutter pot 5 are provided on both sides of the skirt 14 at the rear side in the moving direction of the bucket 3. Have been.

FIG. 3 is a plan view of the shutter pot 5, and FIG.
3 is a cross-sectional view taken along the line AA in FIG. 3 and viewed from the direction of the arrow.
Is formed in a flat tray shape having a width smaller than the interval between the inner wall surfaces 3C on both right and left sides and slightly curving upward in the front-rear direction, and the support shaft 16 is pivoted at the center in the width direction at the rear end. A cylindrical portion 5A that is freely inserted is provided.

A pair of vertical walls 5B are provided on both left and right sides of the shutter pot 5, and a projection 5D protruding forward is formed on both left and right sides and a center position of the front end 5C.

Next, the operation of the shutter pot 5 having the above-described structure will be described with reference to FIG. FIG. 5A shows a shutter pot 5 on the front side 3A of the opening edge of one bucket 3.
Of the shutter pot 5 is held in a substantially horizontal position, and the scattered material flowing down from above in the throwing chute 4 is the upper surface 5 of the shutter pot 5.
It is received by F and diffuses in the left and right direction while staying here.

FIG. 2B shows a state immediately before the bucket 3 further advances and the shutter pot 5 comes off from the front side 3A of the opening edge thereof. 3A is engaged with the lower surface of the protrusion 5D shown in FIG.

FIG. 5C shows that the bucket 3 is further advanced and the front edge 3A of the opening edge thereof is disengaged from the lower surface of the projection 5D of the shutter pot 5, and the shutter pot 5 is moved by its own weight. The splatters oscillate inward and the stagnation retained on the upper surface 5F thereof flows down into the bucket 3 along the upper surface 5F.

When the bucket 3 moves further forward, the rear side 3B of the opening edge thereof comes into contact with the rear portion of the lower surface 5E of the shutter pot 5 as shown in FIG. Further, as shown in FIGS. 7E and 7F, the rear side 3B of the opening edge keeps pushing up the shutter pot 5, and in FIG. At this time, the succeeding bucket 3 ′ has moved below the shutter pot 5.

When the buckets 3 and 3 'are further advanced, the lower surface 5E of the shutter pot 5 is connected to the rear side 3B of the opening edge of the bucket 3 and the subsequent bucket 3' as shown in FIG. It is supported at both the opening front end 3'A.

Further, these buckets 3, 3 '
Move forward, the lower surface of the shutter pot 5 separates from the opening edge rear side 3B of the preceding bucket 3 from 5E, and is supported only by the opening front end 3'A of the succeeding bucket 3 '. It moves to the position of the bucket 3 in FIG.

The periodic swinging movement of the shutter pot 5 as described above is repeated with the movement of the bucket, and the scatter is thrown into each bucket in a substantially equal amount.

In the embodiment described above, the skirt 1
The height of the shutter pot 5 and the bucket 3 are changed by changing the height of the shutter pot 5 by the suspension bolts 15 shown in FIGS. 1 and 2 so that the optimum throwing operation is performed according to the size and specific gravity of the grain to be handled. The positional relationship can be adjusted.

In this embodiment, the skirt 1
Although the shutter pot 5 is supported by the shutter 4, the lower end opening of the input chute 4 without using the skirt portion 14 is used for a material such as a lump or gravel that can be discharged well without using an air flow. The shutter pot 5 may be directly supported at the rear of the 4A bucket moving direction.

In this embodiment, the projections 5D are formed at the front end 5C of the shutter pot 5, and these projections 5D are connected to the front portion of the opening edge 3A of the bucket 3 and the shutter pot 5. By delaying the timing of disengagement,
This is for reducing spillage at the time of throwing of the litter into the front of the bucket 3. Depending on the shape of the bucket 3, the front end 5 </ b> C may be straightened over the entire width of the shutter pot 5 without providing these projections 5 </ b> D. May be formed.

In this embodiment, the shutter pot 5
Although a pair of vertical walls 5B are provided on the left and right sides of the shutter pot 5, these vertical walls 5B may be omitted and the shutter pot 5 may be formed in a simple plate shape.

When the shutter pot 5 is provided with a pair of vertical walls 5B as in this embodiment, when the shutter pot 5 is pushed up by the bucket 3 into a substantially horizontal posture, the lower end opening of the skirt portion 14 is opened. By making the lower end opening 4 </ b> A of the section or the input chute 4 closed by the shutter pot 5, it is possible to minimize the spillage of scattered materials outside the bucket 3.

Further, in the above-described embodiment, the bucket conveyor 2 has a structure in which the bucket 3 is swingably supported by the chain 8. In the charging device of the present invention, the bucket is fixed to the chain. The present invention can also be applied to a bucket conveyor having a structure.

[0038]

According to the bucket conveyor loading device of the present invention, the spatter that has flowed down inside the loading chute when the shutter pot is in a substantially horizontal posture is received on the upper surface of the shutter pot and temporarily stays there. While being diffused to the left and right in the width direction of the shutter pot, when the front end of the shutter pot swings into the bucket, the spatter is decelerated along the upper surface of the shutter pot and flows into the bucket. When the scatter is thrown into the hopper, it is possible to prevent the scatter of the spread and the generation of dust.

Further, the shutter pot has a structure in which the shutter pot is swung up and down by an engagement and disengagement operation between a lower surface thereof and an edge of the bucket opening. In addition, they can be supplied almost equally.

Further, a drive source for swinging the shutter pot and an expensive control mechanism for adjusting the timing to the movement of the bucket are not required, and the manufacturing cost can be reduced since the structure is simple.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a charging device for a bucket conveyor according to the present invention.

FIG. 2 is a view of a bucket conveyor loading device according to an embodiment of the present invention as viewed from the rear in a bucket moving direction.

FIG. 3 is a plan view of a shutter pot according to the embodiment of the present invention.

FIG. 4 is a sectional view taken along the line AA in FIG. 3 and viewed in the direction of the arrow;

FIG. 5 is a diagram illustrating the operation of a shutter pot.

FIG. 6 is a diagram showing an example of a conventional bucket conveyor charging device.

[Explanation of symbols]

1 Input device 2
Bucket conveyor 3,3 'Bucket 3A, 3'A
Opening edge front 3B Opening edge rear 3C
Inner wall 4 Input chute 4A
Lower end opening 4B Input port 4C
Underside of distribution logistics 5 Shutter pot 5A
Tubular part 5B Vertical wall 5C
Front end 5D Projection 5E
Lower surface 5F Upper surface 6
Dustproof cover 7 Guide rail 8
Chain 9 Pivot part 10
Swing regulation guide 11 Tilt lever 12
Support plate 13 Flow adjustment damper 14
Skirt part 15 Suspension bolt 16
Support shaft 17 Bearing part S
Gap

Claims (1)

[Claims] 1. A rear end portion of a lower end opening of a charging chute provided above a horizontal transport path of a bucket conveyor with respect to a bucket moving direction, the rear end portion of which is rotatable about a horizontal axis orthogonal to the moving direction. It is supported and is formed in a tray shape narrower than the facing interval between the left and right inner sides of the opening edge of the bucket, and when the lower surface is engaged with the opening edge of the bucket moving downward and held in a substantially horizontal posture. The upper surface receives the scatter that has flowed down the input chute, and when the lower surface is disengaged from the opening edge of the bucket as the bucket moves, the front end swings into the bucket by its own weight and the upper surface moves. And a shutter pot for causing the scatter to flow down into the bucket.