JP3066722B2 - Prevention device for clogging of sieving machine in crushed stone and aggregate feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a method for removing crushed stones and aggregates,
Attached to a crushed stone / aggregate feeder that feeds a predetermined amount to a post-processing machine such as a conveyor belt or a crusher, especially a crushed stone / aggregate feeder that inputs crushed stones by a reciprocating load receiving plate. The present invention also relates to a device for preventing clogging of a sieving machine such as crushed stone.

[0002]

2. Description of the Related Art Crushed stone or aggregate crushed to a predetermined size, ore excavated from a mine or the like must be conveyed to a predetermined place by a conveyor such as a conveyor belt or a crusher. Etc. must be put into the post-processing machine. In addition, unless the crushed stones, aggregates, and the like are input into the post-processing machine or the like by a predetermined amount, stable processing or transport cannot be performed because the processing capacity of the post-processing machine is exceeded. A so-called feeder is conventionally used in such a case.

A conventional crushed stone / aggregate feeder is, for example, shown in FIG.
As shown in FIG. 1, crushed crushed stones and aggregates or excavated ore are temporarily stored in a hopper, and a load receiving plate disposed below a lower end opening of the hopper is reciprocated (in FIG. ) To send out a predetermined amount on the load receiving plate. That is, a predetermined amount of crushed stones or the like stored in the hopper is supplied onto the load receiving plate when the load receiving plate moves forward (to the left in FIG. 1), and the load receiving plate is moved rearward (to the right in FIG. 1). , The stopper is stopped by the rear lower edge of the hopper adjacent to the load receiving plate, and only the load receiving plate moves rearward. Then, the crushed stone in the hopper is supplied on the load receiving plate by a predetermined amount by the forward movement of the next load receiving plate.

[0004] The crushed stones and the like that have fallen from the tip of
It is put into a post-processing machine such as a crushed stone transport vehicle or a conveyor belt, and at the tip of the load receiving plate, a sieving machine for preventing soil or fine crushed stones etc. from directly falling into the post-processing machine is shown in FIGS. They are arranged as shown in the left part of FIG. As shown in FIG. 3 or FIG. 9, this sieving machine has a structure in which a large number of runners are parallel to each other at a predetermined interval. It is arranged at the front end. As a result, crushed stones, etc., which have fallen from the load receiving plate, roll along each sinking bar while preventing the soil and fine crushed stones from directly falling into the post-process machine, and give a large impact to the post-process machine. It falls without.

[0005] This sieve is intended to remove crushed stones and the like that are smaller than the interval between each of the sinking bars, but they tend to cause clogging between the sinking bars due to the crushed stones. In the conventional crushed stone feeder, clogging in the sieving machine was not regarded as a problem. Because clogging does not occur throughout the sieving machine and crushed stones that have been clogged by the next falling crushed stones are dropped down, so it is not a serious problem. Because it was not.

However, in recent years, it has become necessary to make the size of crushed stones constant, that is, to improve the quality, and it has become necessary to make sorting by a sieving machine more reliable. is there. In other words, clogging in the sieving machine cannot be ignored in order to improve the quality of crushed stone or the like as a product.

The inventor of the present invention has conducted various studies on this kind of crushed stone / aggregate feeder so as to prevent clogging in the sieving machine, and as a result, completed the present invention. It was done.

[0008]

SUMMARY OF THE INVENTION The present invention has been made on the basis of the above circumstances, and the problem to be solved is clogging of a sieving machine by crushed stones or the like.

An object of the present invention is to provide a simple structure for preventing clogging, which can always remove crushed stones and the like between clogging bars of a sieving machine at the time of feeding by a feeder. Is to provide by.

[0010]

In order to solve the above-mentioned problems, the means adopted by the present invention will be described with reference numerals used in the embodiments. 400, by reciprocating the load receiving plate 220 arranged below the lower end opening of the hopper 210,
By sending out a predetermined amount on this load receiving plate 220,
In the crushed stone / aggregate feeder 200 in which the crushed stone / aggregate 400 sent out on the load receiving plate 220 is fed from the front end of the load receiving plate 220 toward the post-processing machine 300 or the like, the crushed stone / aggregate is placed on the lower surface side of the sieving machine 230. The arranged clogging prevention device 100 is connected to each of the sink bars 2 constituting the sieving machine 230.
31 in a plan view, and a sink 231 in a side view.
And each of the sinking bars 23
A number of removal crosspieces 10 inserted partially between 1, a swing shaft 20 that summarizes integrally these removal crosspiece 10, a swing arm 30 which is provided in a part of the swing shaft 20, the the other end is connected to one end to the swing arm 30 as well as configure by a drive link 40 which is connected to the lower surface side of the goods receptacle plate 220, Fu
The upper surface side of each sinking bar 231 of the cutter 230
Is made larger than the lower surface side,
The direction of the gap formed perpendicular to each sink bar 231
The upper part is smaller and the lower part is larger.
As the load receiving plate 220 reciprocates, each removal bar 1
0 to and from the each flow bar 231 sieve machine 230, the flow The rewritable remove crushed stones or the like 400 that is about to wake clogging between crosspiece 231, old machine 230 itself smell
Also it is an anti-clogging device 100 "which is characterized in that there was Unishi I to prevent the clogging.

That is, the clogging / aggregate feeder 200 to which the clogging prevention device 100 according to the present invention is attached is provided.
While allowing the "sieving" action of the sieve 230, a part of each removing bar 10 always enters and exits in conjunction with the reciprocating motion of the load receiving plate 220 into the sink bar 231 constituting the sieve 230. For this purpose, a large number of removal bars 10 are arranged in parallel with each of the sink bars 231 constituting the sieving machine 230 and partially inserted between them.
And an oscillating shaft 20 integrating these removal bars 10 integrally.
A swing arm 30 provided on a part of the swing shaft 20;
One end is connected to the swing arm 30 and the other end is
20 and a drive link 40 connected to the lower surface side.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a clogging prevention device 100 according to the present invention will be described with reference to an embodiment shown in the drawings. FIG. 1 shows a crushed stone / aggregate feeder provided with the clogging prevention device 100. A schematic side cross-sectional view of 200 is shown. The crushed stone / aggregate feeder 200 includes a hopper 210 into which crushed stone / aggregate 400, ore, and the like are charged, and a load receiving plate 220 that is moved back and forth below the hopper 210. The clogging prevention device 1 according to the present invention is provided below the sieving machine 230 disposed at the front end of the plate 220.
00 is provided.

As shown in FIG. 1, the hopper 210 has a front lower end of a lower end opening of the hopper 210 from the upper surface of the load receiving plate 220.
Aggregates 400 are separated to the extent that they can be sent out,
The lower end of the rear plate forming the lower end opening is
Are arranged in close proximity to the upper surface. In addition, a plurality of chains are provided on the front side of the hopper 210 shown in FIG. 1, and the chains prevent the crushed stones, aggregates 400 and the like from suddenly rolling on the load receiving plate 220.

The load receiving plate 220 is at the front end (left end in FIG. 2).
Are arranged so as to be inclined downward, and a support rail is integrated with the lower surface thereof. Each support rail is guided on a support roller provided on the base frame side of the crushed stone / aggregate feeder 200, and is for smoothly moving the load receiving plate 220 back and forth. .

A crank 221 is connected to the rear end of the load receiving plate 220. The other end of the crank 221 is, as shown in FIGS. 10 and 11, an eccentric shaft of a chain wheel provided on a base frame. It is connected to 222. That is, the chain wheel is rotated by a drive source (not shown), and by connecting the crank 221 to an eccentric shaft 222 eccentric to the chain wheel, the rotational force of the chain wheel is It is configured to provide a driving force for front and rear.

As shown in FIG. 3, one rear end screw conveyor 241 and a pair of left and right side end screw conveyors are provided at the rear end edge and the left and right end sides of the load receiving plate 220 as described above. 242 are arranged.
These rear-end screw conveyor 241 and side-end screw conveyor 242 are arranged at positions that cover the range in which the lower end opening of the hopper 210 moves relative to each other, so that pebbles and the like that have spilled or leaked from above can be reliably removed. It is arranged at the position where it is received.

The crushed stone / aggregate 400 flowing on the load receiving plate 220 is sieved at the left end of the load receiving plate 220 constituting the crushed stone / aggregate feeder 200 shown in FIGS. A sieve 230 for sifting is arranged.
As shown in FIGS. 3 and 9,
While arranging many sinking bars 231 parallel to each other,
A predetermined gap is formed between these sink bars 231 for passing small crushed stones / aggregates 400 to be sieved. And this sieve machine 230 is equipped with each sinking bar 231.
Are integrated by a frame, and the rear end side of the frame is, as shown in FIGS.
The sieving machine 230 is tilted as a whole by being fixed to the lower end of the front end 20 and the front end of the frame body facing downward. In other words, this sieve machine 230
Is a stationary one in which each of the sink bars 231 is inclined forward, and the above-mentioned post-process machine 300 is located further below the sieve 230 at the front. The small crushed stones / aggregates 400 and the like that have been sieved by the sieving machine 230 are transported to another place by a conveyor or the like inside the post-process machine 300.

[0018] In Rui 230 marks the present invention is targeted for each flow bar 231 constituting this by configuring as follows, the sieving machine 23
0 itself prevents the clogging. That is, each sink 231 of the sieving machine 230
In the above, the upper surface side is made larger than the lower surface side, so that the upper portion of the gap formed by each flow bar 231 in the direction orthogonal to each flow bar 231 is smaller and the lower portion is larger. Thereby, each sinking bar 2
Even if the crushed stone / aggregate 400 is clogged on both sides of the upper end surface of the 31, clogging is absolutely prevented from occurring in the lower part of the gap formed by each sinking bar 231. Also,
With the above-described configuration, between each of the sinking bars 231, each of the removing bars 10 of the clogging prevention device 100 described below is provided.
It is easy to get in and out from below.

The clogging prevention device 100 according to the present invention is disposed below the sieving machine 230 as described above. This clogging prevention device 100 is shown in FIGS.
As shown in FIG. 6, a plurality of removal bars 10 arranged in parallel with each of the sink bars 231 constituting the sieving machine 230 and partially inserted between them, and these removal bars 10 are integrally formed. A swinging shaft 20, a swinging arm 30 provided on a part of the swinging shaft 20, and a drive link having one end connected to the swinging arm 30 and the other end connected to the lower surface of the load receiving plate 220. 40.

As shown in FIGS. 1 and 2, each of the removing bars 10 is disposed below the above-mentioned sieving machine 230, and is inclined with respect to the load receiving plate 220 of the crushed stone / aggregate feeder 200. This is arranged in such a manner that the front end of the sieving machine 230 is inclined further downward. As shown in FIG. 6A, each of the removal bars 10 of this embodiment is integrated with the upper end of the holding arm 11, and the swing shaft 2
The connecting cylinder 12 integrated on the top is integrally formed.

Of course, each removing bar 10 has a thickness and a length which can be inserted and removed from below in the gap formed by the sink bar 231 of the sieving machine 230 described above. As shown in (b) and (c), two removal bars 10 are integrated with one connecting cylinder 12 in parallel with each other. As shown in FIG. 7, a large number of connecting cylinders 12 in which the two removal bars 10 are integrated are fitted on one swing shaft 20 so that the removal bars 10 are parallel to each other. 3 and FIG.
As shown in (1), each removal bar 10 can be inserted between the respective flow bars 231 on the sieving machine 230 side.

Further, as shown in FIG. 6A, for example, as shown in FIG. 6A, a swing arm 30 projecting to the opposite side of each of the removal bars 10 is provided on the connecting cylinder 12 in which the two removal bars 10 are integrated. When the connecting cylinders 12 are pivoted about the pivot shaft 20 by the pivot arm 30, the removing bars 10 enter between the flowing bars 231 from the upper end side. It was made. Of course, as shown in FIGS. 2 and 5, the swing shaft 20 is arranged at the front end of the base constituting the crushed stone / aggregate feeder 200 so as to be substantially horizontal, and at this position. It is rotatably supported.

Each of the removal bars 10 of the clogging prevention device 100 must be inserted into and out of the space between the sink bars 231 on the sieving machine 230 side.
For that purpose, the other end of the drive link 40 whose one end is connected to the lower surface side of the load receiving plate 220 is connected to the swing arm 30 described above. That is, in the clogging prevention device 100 of the present invention, the sieving machine 230
As a driving source for moving in and out of the vehicle, a load receiving plate 220 that moves back and forth is adopted, and power transmission between the load receiving plate 220 and each removal bar 10 is performed by the drive link 40 described above. The swing arm 30 and the connection cylinder 12 are illustrated.

The operation of the clogging prevention device 100 according to the present invention having the above-described configuration will be described together with the operation of the whole crushed stone / aggregate feeder 200 provided with the device. Aggregate 400 or the like ore mined is supplied to hopper 210 shown in FIG.
It is thrown in. An opening is formed between the front lower end of the hopper 210 and the load receiving plate 220 for the crushed stone / aggregate 400 to be sent out. Although a part rolls on the load receiving plate 220, since the lower end of the rear face plate of the hopper 210 is arranged with a slight gap left between the load receiving plate 220,
The crushed stone / aggregate 400 does not roll or move leftward in the figure from the position shown in FIG.

Here, when the chain wheel shown in FIG. 1 is rotated by a driving device (not shown), the eccentric shaft 222 provided in an eccentric state with respect to the chain wheel is rotated, and this eccentric shaft 222 is rotated. Crank 22 on shaft 222
1 are connected, the tip (right end in the figure) of the crank 221 is moved back and forth by the guide member. Since the rear end of the load receiving plate 220 is connected to the front end of the crank 221, as a result, the load receiving plate 220
10, it will move back and forth in the left-right direction of FIG.

When the load receiving plate 220 moves back and forth, as described above, the crushed stones and aggregates 4
00 are sequentially sent out onto the receiving plate 220, whereby the crushed stones / aggregates 400 and the like 400 are passed through the sieving machine 230 from the tip (the left end in FIGS. 1 to 3) of the receiving plate 220. It is to be charged by a predetermined amount into the inside.

Incidentally, the clogging prevention device 10 according to the present invention.
In the crushed stone / aggregate feeder 200 having 0,
0 and the left and right side end screw conveyors 242 are respectively arranged in the portion covering
The rear end screw conveyor 241 is arranged on the rear end edge of the rear end 20. As a result, even if pebbles or the like existing in the crushed stones / aggregates 400 fall from the relative clearance between the hopper 210 and the load receiving plate 220 or try to leak out from the load receiving plate 220, the pebbles will It is completely received by the end screw conveyor 241 and the pair of side end screw conveyors 242, and the guide gutter surrounding them.

In the sieving machine 230, the sand and small pieces in the crushed stone / aggregate 400 rolling toward the post-process machine 300 fall downward while being sorted by the intervals between the respective flow bars 231. In addition, the crushed stone / aggregate 400 having a size approximately equal to the interval between the sink bars 231 may be stuck between the sink bars 231 in some cases and cause clogging. Even if you do,
The clogged crushed stone / aggregate 400 is immediately pushed out above the sieving machine 230 by the clogging prevention device 100 of the present invention, and rolls on the sieving machine 230 to be fed into the post-processing machine 300. . Of course, the crushed stone / aggregate 400 larger than the interval between the sink bars 231 is used as it is by the sieving machine 2.
It rolls on 30 and is loaded into the post-process machine 300.

Crushed stone / aggregate 4 clogged between each sinking bar 231
As described above, 00 is pushed out above the sieving machine 230 by the removal bar 10 constantly entering and exiting between the sink bars 231. In this case, the removal operation of each removal bar 10 in the clogging prevention device 100 is interlocked with the front-back operation of the load reception plate 220 because the removal bar 10 is connected to the load receiving plate 220 side by the drive link 40. . Therefore, each of the removal bars 10 moves upward at almost the same time as the crushed stone / aggregate 400 is clogged between the sink bars 231, so that the clogging of the crushed stone / aggregate 400 between the sink bars 231 is caused by the clogging / aggregate 400. The sieve is released at the same time as the occurrence, and the sieving operation by the sieving machine 230 is always performed in a stable state.

[0030]

As described in detail above, in the present invention,
As exemplified in the above embodiment, “the crushed stone / aggregate 400 put into the hopper 210 is reciprocated on the load receiving plate 220 disposed below the lower end opening of the hopper 210, and thus the crushed stone / aggregate 400 is placed on the load receiving plate 220. The crushed stone / aggregate 400 sent out on the load receiving plate 220 is fed from the front end of the load receiving plate 220 to the post-processing machine
Crushed stone / aggregate feeder 20
At 0, the clogging prevention device 100 disposed on the lower surface side of the sieving machine 230 is parallel to each sinking bar 231 constituting the sieving machine 230 in plan view and in side view.
By arranging it at an angle to the bar 231,
A number of removal bars 10 partially inserted between the bars 231 ;
A swing shaft 20 integrally including the removing bars 10, a swing arm 30 provided on a part of the swing shaft 20, one end connected to the swing arm 30, and the other end connected to the load receiving plate 220. a drive link 40 which is connected to the lower surface side by the to configure bets
In particular, at each of the sinks 231 of the sieving machine 230,
By making the upper surface side of the
Of the gap formed by each of the flow bars 231
The upper part in the intersecting direction is smaller and the lower part is larger
In this way, as the load receiving plate 220 reciprocates, each removing bar 10 enters and exits each sink bar 231 of the sieving machine 230, and the crushed stone 400 or the like which is trying to cause clogging between the sink bars 231 is removed. removal to Rutotomoni, old machine 230 itself
Also has its characterized by "was Unishi by preventing the clogging in the eye thereby, which can be at the time of delivery by the feeder, always removed so as not clog to each sink桟間of crushed stone and the like sieving machine clogging prevention equipment 1
00, it can be provided by a simple structure. In particular, in the clogging prevention device 100,
Each of the removal bars 10 is connected to each of the screens constituting the sieving machine 230.
It is parallel to the sink bar 231 in plan view, and sinks in side view.
By arranging it at an angle to the bar 231,
Since a part was inserted between each sink bar 231,
That each removal bar 10 is and out for each flow crosspiece 231
, Causing clogging between the sink bars 231.
Crushed stone / aggregate 400 always enters and exits between each sinking bar 231.
Is pushed upward by the sieving machine 230.
And clogging is surely eliminated. Ma
In the sieving machine 230, each of the sinks 231
By making the upper surface side larger than the lower surface side,
31 is perpendicular to each sinking bar 231 of the gap formed by
So that the upper part is smaller and the lower part is larger
In this sieve 230 itself,
The clogging is prevented.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a crushed stone / aggregate feeder provided with a clogging prevention device according to the present invention.

FIG. 2 is a side view of the crushed stone / aggregate feeder, focusing on a front portion where the clogging prevention device is arranged.

FIG. 3 is a schematic plan view of the crushed stone / aggregate feeder.

FIG. 4 is a front view and a rear view showing the crushed stone / aggregate feeder in half at right and left sides.

FIG. 5 is a partially enlarged side view of a crushed stone / aggregate feeder schematically showing the clogging prevention device of the present invention.

FIG. 6 is a view showing a removal bar constituting the clogging prevention device, wherein (A) is a side view, (B) is a plan view,
(C) is a front view.

FIG. 7 is a plan view showing a state in which a removal bar of the clogging prevention device is mounted on a swing shaft.

FIG. 8 is an enlarged side view of a sieve constituting a crushed stone / aggregate feeder.

FIG. 9 is a partial plan view of the sieve.

FIG. 10 is a partially enlarged side view showing a crankshaft for driving a load receiving plate of a crushed stone / aggregate feeder.

FIG. 11 is a horizontal and vertical plan view of FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 anti-clogging device 10 removing bar 11 holding arm 12 connecting cylinder 20 oscillating shaft 30 oscillating arm 40 drive link 200 crushed stone / aggregate feeder 210 hopper 220 load receiving plate 230 sifter 231 sinking bar 400 crushed stone / aggregate

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-59-199085 (JP, A) JP-A-51-20162 (JP, A) Jikai 63-112529 (JP, U) (58) Field (Int.Cl. ⁷ , DB name) B07B 1/00-1/62

Claims (1)

(57) [Claims] 1. A crushed stone / aggregate charged into a hopper is reciprocated on a load receiving plate disposed below a lower end opening of the hopper so as to be sent out onto the load receiving plate by a predetermined amount. In a crushed stone / aggregate feeder in which the crushed stone / aggregate sent out on a plate is fed from a sieving machine at the front end of the receiving plate toward a post-processing machine or the like, clogging arranged on the lower surface side of the sieving machine Prevention device,
Parallel to each sink crosspiece that constitutes the sieving machine in plan view
At an angle to the sink in side view
By doing so, a number of removal bars with a part inserted between the sink bars, a swing shaft integrally integrating these removal bars, and a swing arm provided on a part of the swing shaft , as well as configure the other end is connected at one end to the swinging arm by a drive link coupled to the lower surface side of the goods receptacle plate, in each flow bars of the sieve machine, the lower surface of the upper surface side
Formed by each sinker by making it larger than the side
The upper part of the clearance that is perpendicular to each
As the lower portion becomes larger, the load receiving plate reciprocates, so that each of the removal bars enters and exits each of the sink bars of the sieving machine, and clogging between the respective sink bars is caused. Rutotomo to remove the crushed stone, etc.
In addition, the sieving machine itself also prevents the clogging.
Clogging prevention device which is characterized in that there was good Unishi that.