JP2000319922A - Bucket for sieving work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bucket for sieving work by the constitution of hardly causing mesh-clogging in a screen and respective roller disks and the constitution capable of easily removing mesh-clogging when the mesh-clogging is caused. SOLUTION: Roller disks 6A to 6D for installing a large number of disks 5 at prescribed intervals on a rotary shaft 4 are adjacently provided in plural rows as an agitating/pulverizing means for pulverizing earth and sand while agitating the earth and sand to be housed in a bucket 8 in a mode of rotating the respective roller disks in the same direction, and a screen 7 for sieving work is installed as a selecting means in a bottom part of the bucket 8 positioned under a roller disk group. Then, the screen 7 is installed so as to be openable/closable by extending/contracting operation of a hydraulic cylinder 17, and disks of adjacent separate roller disks are alternately arranged between the respective disks of the roller disks so as to overlap each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used as a front attachment for a self-propelled construction machine such as a shovel excavator, and is capable of reusing sediment to be sieved in a bucket with unnecessary foreign matter having a certain particle size or more. Sieving to earth and sand of a certain grain size or less, regarding a bucket for sieving work to take out both separately, for example, sieving from excavated earth and sand to gravels and earth or tree roots and earth and sand, or from earth and sand including demolished concrete buildings It is used for sieving concrete blocks and earth and sand.

[0002]

2. Description of the Related Art In a bucket of this kind, a plurality of rows of roller discs having a large number of discs mounted at predetermined intervals on a rotating shaft are arranged adjacent to each other as stirring / crushing means for crushing soil while stirring. Then, each roller disk is accommodated in a bucket so as to rotate in the same direction, and at the bottom of the bucket located below the roller disk group, a net woven material suitable for a sieve size is formed as a sorting means. There is a configuration in which a screen for sieving work is attached in a fixed state.

[0003]

However, there are several problems that need to be improved in the conventional sieving work bucket having the above-mentioned configuration. The first problem is that the earth and sand or foreign matter that has passed through the roller disk group is liable to be improved. When the particle size is larger than the particle size that can pass through the screen, there is a risk that the sediment or foreign matter may clog the screen and disable the sieving operation, and it is extremely difficult to remove the clogged soil or foreign material. .

As a second point, as a means for reducing the problem of the first point, the disk interval between each roller disk or the interval between each adjacent roller disk is reduced so that the mesh size of the screen becomes as close as possible. However, in the former case, clogging may occur between disks.

Therefore, the present invention provides a sieving work bucket which can solve the above-mentioned problems of the prior art. It is an object of the present invention to provide a sieving work bucket having a configuration that can be easily removed.

[0006]

SUMMARY OF THE INVENTION The present invention provides a stirring and crushing means for stirring and crushing earth and sand while arranging a plurality of roller disks adjacent to each other at predetermined intervals on a rotating shaft in a plurality of rows. Each roller disk is accommodated in a bucket in a manner rotating in the same direction, and a sieving operation formed of a net woven material conforming to a sieve size is used as a sorting means at a bottom of the bucket located below the roller disk group. And a sieve work bucket equipped with a screen for use.

The sieving work bucket according to the present invention has a construction in which the screen is mounted so as to be openable and closable by an expansion and contraction operation of a hydraulic cylinder (claim 1). Open the screen even if earth and sand or foreign matter having a particle size equal to or larger than the mesh size falls through the roller disc group and falls on the screen, or when foreign matter is caught between the roller discs or between the discs of the roller discs. And can be easily removed.

In the bucket for sieving work according to the first aspect, it is possible to adapt the screen to a screen having a desired mesh size by adapting it to the particle diameter of the sieved sand which is different according to the sieved material to be sieved or the purpose of reuse. Since it is possible, there is no need to prepare a large number of sieve work buckets, which is economical.

Another sieving work bucket according to the present invention has a configuration in which adjacent rollers of another roller disk are alternately arranged between the respective rollers of the roller disks in a manner of overlapping. Item 2) In the sieving work bucket according to Item 2, another disk that overlaps between the disks whose relative positions are fixed rotates and the distance between the disks is substantially reduced.

Therefore, according to the sieving work bucket of the present invention, the particle size of the earth and sand or foreign matter passing through the roller disc group can be limited to a small value, so that the foreign matter mainly remains on the upper side of the roller disc group. ,
It is possible to drop only the earth and sand having a small particle diameter on the screen, and to collect the soil as good quality sand through the screen without clogging.

Further, in the sieving work bucket according to the second aspect, the earth and sand in the bucket is crushed by the overlapping rotating disks while effectively stirring.
It promotes sieving work to improve work efficiency, and also removes lumps and foreign matter that may cause clogging from each disk, and when overlapped, the width and front-to-back width Can be narrowed to reduce the size.

[0012] In the sieving work bucket according to claim 2, the roller disc group includes a rotating shaft on which the disc is mounted extends along a lateral width direction of the bucket.
The rotating shaft is rotationally driven by a rotating drive mechanism including a hydraulic motor in an interlocked state, and the rotating drive mechanism may be arranged at both ends of the rotating shaft so as not to protrude from both side plates of the bucket. (Claim 3)

[0013] In the bucket for sieving work according to the third aspect, the rotary drive mechanism does not protrude from both side plates of the bucket. Excavation can be performed in the same way as in the case of, especially when the stirring and crushing means is reduced in size by overlapping the disks, even if the rotation drive mechanism is provided at both ends of the rotating shaft, the normal bucket size Can be stored within.

Still another bucket for sieving work of the present invention can have a configuration obtained by combining the above-described claims 1 and 2 (claim 4). The above-mentioned effects of the first and second aspects are achieved. In particular, the frequency of clogging is reduced because the screen sifts finely ground earth and sand by the configuration of the first aspect. However, the foreign matter can be easily removed by the configuration of claim 2, so that the sieving operation can be performed efficiently.

In the sieving work bucket according to the second to fourth aspects, it is possible to adopt a form in which a hammer member is detachably attached to an appropriate position on the outer periphery of the disk (claim 5). In the bucket for hammering, the impact of the hammer member stirs and grinds the sand between the discs more effectively, and removes lumps and foreign matters of the sand, thereby contributing to improvement of work efficiency and prevention of clogging. it can.

In the sieving work bucket according to the fifth aspect, the hammer member can reduce the damage and wear of the disk, and if the disk is damaged, the entire roller disk needs to be replaced. If the hammer member is damaged, it is economical because only local replacement is required, and it is also possible to replace the hammer member with one having a shape adapted to the properties of the sediment to be sieved.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a sieving work bucket (hereinafter referred to as a bucket) of the present invention will be described in detail with reference to FIGS. FIG. 1 is a side view of the bucket 1 in a state in which one side plate is broken, FIG. 2 is a plan view of the bucket 1, and FIG.

The bucket 1 has, as a front attachment such as a backhoe or shovel equipped with a crawler type traveling vehicle, a mounting bracket 2 for connecting to a traveling vehicle side arm and a bucket cylinder via a link mechanism at a base end side. In addition, a drilling blade 3 is protrudingly provided on the distal end side, and is formed in a box shape in which the front and rear and both side surfaces are surrounded by a plate material and the lower side is opened.

In the bucket 1, a roller disk 6A having a plurality of rows of roller disks 6 mounted on the rotating shaft 4 at predetermined intervals is provided as a stirring and crushing means for crushing soil while stirring. -6D group is accommodated, and each roller disk 6A-6D is driven to rotate in the same direction.

On the bottom side of the bucket 1 located below each of the roller disk groups 6A to 6D, a screen 7 made of a net woven material having a mesh size adapted to a sieving operation is provided as a sorting means. The screen 7 is attached to an opening on the bottom side of the bucket 1 so as to be openable and closable.

The rotation drive mechanism for the roller disk groups 6A to 6D includes a rotary shaft 4 on which each disk 5 is mounted.
Are extended along the width direction of the bucket body 8, and between the rotating shafts 4 of the adjacent roller disks 6, sprockets 11 mounted at both ends are connected by a chain 15, and one of the rotating shafts 4 is hydraulically driven. The sprocket 14 mounted on the output shaft 13 of the motor 12 is linked to the sprocket 14 by a chain 15 and is driven to rotate in an interlocked state. The rotary drive mechanism for the roller disk groups 6A to 6D including the hydraulic motor 12 is provided on both side plates of the bucket body 8. It is housed within the width that does not protrude from

That is, the rotational drive of the roller disk groups 6A to 6D is performed by the left and right mounting plates 9, 9 provided in the bucket body 8.
The rotating shaft 4 is pivotally mounted on the rotating shaft 10 via a bearing member 11. Sprockets 14 are provided on both ends of the rotating shaft 4 and the output shaft 13 of the hydraulic motor 12, and the adjacent sprockets 14, 14 are connected by a chain 15. When the hydraulic motors 12 are connected to each other, the rotary motors 12 are driven to rotate in the same direction.

In the illustrated embodiment, a sprocket 14 and a chain 15 for rotating the rotating shafts 4 in an interlocking manner among the rotary driving mechanisms for the roller disk groups 6A to 6D.
Is housed in the bucket body 8, and the hydraulic motor 12 is mounted on the rear end side of the bucket body 8 opposite to the excavating blade 3, and is mounted within a width range without protruding from both side plates of the bucket body 8. By doing so, the rotary drive mechanism does not hinder the excavation work performed by the bucket body 8 using the excavation blade 3.

The roller disk groups 6A to 6D are arranged in such a manner that the mounting positions of a large number of disks 5 provided at predetermined intervals on the rotating shaft 4 are shifted so as to be different for each row, and one of the adjacent ones is arranged. The disk 5 of the roller disk 6 is mounted so as to overlap the other disk 5, and the roller disks 6A and 6C are arranged in the same manner as the roller disks 6B and 6D.

For example, as shown in FIG.
The disk 5b mounted on the other rotating shaft 4b is mounted in an overlapping manner with the disk 5b mounted on the other rotating shaft 4b between the disks 5a mounted on the disk 5a. The hammer member 16 is disposed so as to face the rotary shaft 4 as shown in the drawing, for example, and the mounting positions of the hammer members 16 of the adjacent rotary shafts 4a and 4b differ by 90 degrees. It is desirable to be deployed in such a way.

The screen 7 is mounted so as to be openable and closable via a hydraulic cylinder 17. The hydraulic cylinder 17 is pivotally attached to the bucket body 8 via a mounting bracket 18, and a swing arm is attached to the tip of the piston rod. The swing arm 19 is pivotally attached to one end of the swing arm 19, and an intermediate fulcrum shaft 20 is pivotally attached to a support cylinder 21 provided on the bucket body 8 side, and the screen 7 at the other end is attached.

The screen 7 is attached to the bottom surface of a bucket body 8 which is opened in an extended state as shown by a solid line when the piston rod of a hydraulic cylinder 17 is extended and contracted by hydraulic pressure supplied from the traveling vehicle. However, when shortened, one end of the swing arm 19 is drawn, and the swing arm 19 is swung and rotated around the fulcrum shaft 20 regulated by the support cylinder 21 (the hydraulic cylinder 17 also swings in conjunction with it), and is represented by an imaginary line. The screen 7 is released as shown.

The above-mentioned bucket 1 is connected to an arm and a bucket cylinder of the traveling vehicle via a mounting bracket 2, and excavates the target earth and sand on the excavating blade 3 by an operation from the traveling vehicle side, so that the inside of the bucket body 8 is formed. And sifting is performed by rotating the hydraulic motor 12 with the hydraulic pressure supplied from the traveling vehicle side while oscillating by the expansion and contraction operation of the bucket cylinder. The foreign matter that has been discharged via the roller disc group 6A to 6D and is left on the upper side is discharged by the rolling of the bucket 1.

The stirring / crushing operation of the roller disk groups 6A to 6D is performed by the disk 5 of each adjacent roller disk group.
Are rotated in the same direction, so that no foreign matter is caught between the roller disc groups adjacent to the rotating shaft 4 in the direction orthogonal to the rotating shaft 4, and the rotating between the adjacent discs 5 in the direction along the rotating shaft 4. Since the other disks 5 overlap each other, it is possible to improve trapping of foreign matter between the disks 5.

Further, according to the configuration of the roller discs that rotate while overlapping, the number of discs 5 mounted on the rotating shaft 4 does not overlap.
/ 2, the same gap can be obtained, and the lateral width dimension of the rotating shaft 4 can be shortened.
Since the width in the front-rear direction orthogonal to the rotation shaft 4 can be reduced by the amount of the overlap, the entire bucket can be reduced in size.
It is also possible to provide the device at low cost using a normal bucket size.

Further, according to the configuration of the roller discs that rotate while overlapping, it is possible to mount more roller disc groups when the roller discs have the same width dimension, and furthermore, it is possible to install a mass of soil and sand or viscous material. Effective stirring and crushing of soil and the like can be performed, and the particle size of the soil that falls to the screen 7 side is reduced to reduce the screen 7
This prevents clogging, so that the sieving operation can be performed efficiently.

When the whole bucket can be made smaller by overlapping the adjacent disks 5, the hydraulic motor 1
2 and the rotation drive mechanism of the roller disc groups 6A to 6D including the sprocket 14 and the chain 15 can be mounted without protruding from the lateral width of the bucket body 8 having a normal bucket size. , A digging operation equivalent to that of a normal bucket can be performed.

The hammer member 16 provided on the outer periphery of the disk 5 accelerates agitation and crushing while rotating and hitting the solidified or viscous earth and sand, and also prevents damage to the disk 5 due to foreign matter and the like. When the hammer member 16 is detachably attached to the disk 5, it can be easily replaced with a new one when it is damaged, and the hammer member 16 can be easily replaced with a new one when it is damaged. It is also possible to exchange.

Further, the screen 7 which can be opened and closed is provided.
Even if soil or foreign matter having a particle size equal to or larger than the mesh size passes through the roller disk groups 6A to 6D and falls onto the screen 7, or even if foreign matter is caught in the roller disk groups 6A to 6D, Can be opened and easily removed.

Further, since it is possible to adapt to the size of the sieving and sand to be changed according to the sieving object to be sieved and the purpose of reuse, and to use the screen 7 having a desired mesh size, it is possible to use a large number of sieving. There is no need to prepare a work bucket, which is economical.

[Brief description of the drawings]

FIG. 1 is a sieving work bucket according to an embodiment of the present invention, showing a bucket 1 in a state where one side plate is broken.
FIG.

FIG. 2 shows a plan view of the bucket 1 of FIG.

FIG. 3 is an enlarged perspective view of a main part of the bucket 1 of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sieve work bucket 2 Mounting bracket 3 Excavation blade 4 Rotary shaft (of roller disk) 5 Disk 6 Roller disk 7 Screen 8 Bucket body 9, 10 Mounting plate 11 Bearing member 12 Hydraulic motor 13 Output shaft 14 Sprocket 15 Chain 16 Hammer member 17 hydraulic cylinder 18 mounting bracket 19 swing arm 20 fulcrum shaft 21 support cylinder

Claims (5)

[Claims] 1. As a stirring and crushing means for crushing earth and sand while stirring, a plurality of roller discs mounted with a large number of discs at predetermined intervals on a rotating shaft are arranged adjacently in a plurality of rows, and each roller disc rotates in the same direction. Sieving operation, in which a screen for sieving operation formed of a mesh woven material conforming to the size of the sieve is mounted as a sorting means on the bottom of the bucket located below the roller disc group in such a manner that A bucket for sieving work, wherein the screen is mounted so as to be openable and closable by an expansion and contraction operation of a hydraulic cylinder. 2. As a stirring and crushing means for crushing earth and sand while stirring, a plurality of rows of roller discs mounted with a plurality of discs at predetermined intervals on a rotating shaft are arranged adjacent to each other, and each roller disc rotates in the same direction. Sieving operation, in which a screen for sieving operation formed of a mesh woven material conforming to the size of the sieve is mounted as a sorting means on the bottom of the bucket located below the roller disc group in such a manner that A bucket for sieving work, wherein discs of adjacent roller discs are alternately arranged in an overlapping manner between the discs of the roller discs. 3. The roller disk group, wherein a rotating shaft on which the disk is mounted extends along the lateral width direction of the bucket, and the rotating shaft is rotationally driven in an interlocked state by a rotational driving mechanism including a hydraulic motor, 3. The sieving work bucket according to claim 2, wherein the rotary drive mechanism is arranged at both ends of the rotating shaft so as not to protrude from both side plates of the bucket. 4. As a stirring and crushing means for crushing earth and sand while stirring, a plurality of roller discs mounted with a plurality of discs at predetermined intervals on a rotating shaft are arranged adjacent to each other in a row, and each roller disc rotates in the same direction. Sieving operation, in which a screen for sieving operation formed of a mesh woven material conforming to the size of the sieve is mounted as a sorting means on the bottom of the bucket located below the roller disc group in such a manner that In the bucket for use, the screen is mounted so as to be openable and closable by the expansion and contraction operation of a hydraulic cylinder, and disks between adjacent roller rollers are alternately arranged between the respective disks of the roller disks so as to overlap. A sieve work bucket characterized by the following. 5. The sieving work bucket according to claim 2, wherein a hammer member is detachably attached to an appropriate position on the outer periphery of the disk.