JP2003119817A - Skeleton bucket and sieving method using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To do sieving operation a plurality of times by oscillating one skeleton bucket. SOLUTION: The skeleton bucket has a second skeleton bucket 20 detachably connected to a portion of a first skeleton bucket 10 other than an input port. The first skeleton bucket has a pair of first side faces 11 arranged in approximately parallel, spaced apart relationship, and a first bottom face along a direction perpendicular to the first side faces, with the pair of first side faces connected to the first bottom face in such a manner that at least one of the first side faces opens as the input port 1. A plurality of openings are provided in the first bottom face. The second skeleton bucket has a pair of second side faces 21 arranged in approximately parallel, spaced apart relationship, and a second bottom face 22 along a direction perpendicular to the second side faces, with the pair of second side faces connected to the second bottom face in such a manner that at least one of the second side faces opens as a receiving opening 2. The second bottom face 22 is provided with a plurality of second openings 23 larger than the first opening.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a skeleton type perforated bucket having a sieving function. It relates to a bucket for sifting.

[0002]

2. Description of the Related Art Conventionally, stone materials generated when a building is demolished,
Gara such as concrete material is first crushed by a crusher, and then crushed material is scooped using a skeleton bucket 10A having a lattice-shaped frame 19 on the bottom surface as shown in FIGS. 1 (a) and (b). This skeleton bucket 10
By operating the arm 5 of the hydraulic excavator to which A is attached, a crushed material of a required size is dropped from the hole partitioned by the frame of the skeleton bucket 10A, and sieving is performed according to the size of the crushed material. Was there. Further, not only the crushed material as described above, but also sieving work of cobblestone, gravel collection, earth and sand, etc. has been performed using the skeleton bucket as in the above.

A skeleton bucket having such a sieving function and an apparatus related to the skeleton bucket are disclosed in, for example, Japanese Unexamined Patent Publication No. Hei 1
No. 1-323996 (skeleton bucket with sieving device), Japanese Patent Laid-Open No. 2000-336689 (working device for work vehicle), Japanese Patent Laid-Open No. 2001-74398 (mine mine processing / farmland improving device), Jikkaihei 07-17849. Publication (combined body with perforated bucket and non-perforated bucket), Japanese Utility Model Laid-Open No. 62-228533 (gravel sorter), JP-A-08
No. 60694 (Excavation and sieving / sorting device for a self-propelled vehicle for work), Japanese Patent Laid-Open No. 09-189045 (swivel type clam bucket), Japanese Patent Laid-Open No. 2000-279890 (sediment sieving device), Japanese Patent Laid-Open No. 2000-319919. Japanese Unexamined Patent Application Publication No. (debris bucket) and Japanese Unexamined Patent Publication No. 2001-98575 (grip fork attachment of a power shovel in a backhoe).

[0004]

However, in each of the techniques described in the above publications, one bucket is used to swing and scoop the scraped crushed material with a skeleton bucket. Therefore, it was necessary to change the bucket in order to change the size of the crushed material to be sorted and perform the sieving. Although buckets attached to the ends of arms and booms can generally be replaced with attachments, the replacement of them is extremely time-consuming and tedious work. In particular, since the bucket has a movable part, it is necessary to attach a movable shaft and a drive pipe, which makes the work complicated. Therefore, if the size of the crushed material to be selected is selected first, and then the smaller material is selected from the selected crushed material, once a bucket having a large opening is attached to the arm and sieved, After that, it was necessary to replace the bucket with one having a small opening and then perform sieving again, which was a time-consuming and labor-intensive operation.

The present invention has been made to solve such a problem. It is a main object of the present invention to provide a skeleton bucket capable of performing a plurality of sieving operations at one time and a sieving method using the skeleton bucket.

[0006]

In order to achieve the above object, a skeleton bucket according to claim 1 of the present invention has a plurality of openings. This skeleton bucket includes a first skeleton bucket 10 and a second skeleton bucket 20. The first skeleton bucket 10 includes a pair of first side surface portions 11 that are spaced apart substantially in parallel and arranged in a pair, and in a direction orthogonal to the first side surface portion 11 so that at least one of the side surface portions 11 is opened as an input port 1. A pair of first
And a first bottom surface portion 12 to which the side surface portion 11 is connected. The first bottom surface portion 12 is provided with a plurality of first opening portions 13. In addition, the second skeleton bucket 20 is arranged in a pair so as to be spaced apart from each other substantially in parallel, and at least one of the second side surface portions 21 extends in a direction orthogonal to the second side surface portion 21 so as to open as the receiving port 2. And a second bottom surface portion 22 connecting a pair of second side surface portions 21, and the second bottom surface portion 22.
Is a second opening 23 larger than the first opening 13.
There are multiple. This skeleton bucket is characterized in that the second skeleton bucket 20 is detachably connected to a portion other than the inlet 1 of the first skeleton bucket 10.

Further, in the skeleton bucket described in claim 2 of the present invention, in addition to the features described in claim 1, at least one of the first bottom surface portion 12 and the second bottom surface portion 22 is It is characterized in that it is fixed along substantially the edge of the first side surface portion 11 or the second side surface portion 21.

Further, in the skeleton bucket described in claim 3 of the present invention, in addition to the features described in claim 1 or 2, the space between the pair of first side surface portions 11 and the pair of first side surface portions 11 are provided. The intervals between the two side surface parts 21 are almost the same,
The first skeleton bucket 10 and the second skeleton bucket 20 are connected so that the first plane portion and the second side surface portion 21 are substantially on the same plane.

Further, in addition to the features described in any one of claims 1 to 3, the skeleton bucket described in claim 4 of the present invention is such that the first skeleton bucket 10 projects in the rake direction. As described above, the first skeleton bucket 10 and the second skeleton bucket 20 are connected to each other.

A skeleton bucket according to claim 5 of the present invention is the skeleton bucket according to any one of claims 1 to 4, wherein the second skeleton bucket 20 is a first skeleton bucket. It is characterized in that it is fixed to 10.

Furthermore, the skeleton bucket according to claim 6 of the present invention is a second skeleton bucket 20 which can be mounted on the first skeleton bucket 10 having a plurality of first openings 13. This skeleton bucket includes a pair of second side surface portions 21 that are spaced apart substantially in parallel and arranged in a pair, and a pair of second side surface portions 21 in a direction orthogonal to the second side surface portion 21 so that at least one of the second side surface portions 21 opens as a receiving port 2. A second bottom surface portion 22 to which the side surface portion 21 is connected, and the second bottom surface portion 22 includes a plurality of second opening portions 23 larger than the first opening portion 13.

A skeleton bucket according to a seventh aspect of the present invention is the skeleton bucket according to any one of the first to sixth aspects, further comprising the first skeleton bucket 10 and the second skeleton bucket. Connection part 3 with 20
It is characterized by being able to slide with each other.

Furthermore, the skeleton bucket according to claim 8 of the present invention is the second side surface portion of the second skeleton bucket 20 in addition to the features according to any one of claims 1 to 7. 21 is characterized in that it has a shape protruding in a mountain shape on at least one side.

Here, the shape projecting in a mountain shape may be an inverted trapezoid projecting downward, an inverted triangle, a semicircle, or the like. Further, at least one of the sides intersecting with the side forming the receiving port 2 can be inclined.

Furthermore, the skeleton bucket according to claim 9 of the present invention is the second side surface portion of the second skeleton bucket 20 in addition to the features according to any one of claims 1 to 8. Reference numeral 21 denotes an inverted trapezoidal shape that protrudes downward. The inverted trapezoidal shape has a front surface side located in the rake direction and a rear surface side located in the opposite direction, which is inclined.
Is more acute than the second inclination on the back side with respect to the side forming the receiving port 2.

Furthermore, the skeleton bucket according to claim 10 of the present invention is the second side surface portion of the second skeleton bucket 20 in addition to the features according to any one of claims 1 to 9. 21 is characterized in that the first inclination on the front surface side forms an angle of 15 ° to 60 ° with the side forming the receiving port 2.

Furthermore, the skeleton bucket according to claim 11 of the present invention is the second side surface portion of the second skeleton bucket 20 in addition to the features according to any one of claims 1 to 10. 21 is characterized in that the second inclination on the back side forms an angle of 45 ° to 80 ° with the side forming the receiving port 2.

Furthermore, in addition to the features described in any one of claims 1 to 11, the skeleton bucket described in claim 12 of the present invention is a flat plate in which the side surface portion has no opening. Is characterized by.

Furthermore, the skeleton bucket according to a thirteenth aspect of the present invention is the skeleton bucket according to any one of the first to twelfth aspects.
However, it has a plurality of openings similar to the second opening 23.

Furthermore, a sieving method using a skeleton bucket according to claim 14 of the present invention is
A first skeleton bucket 1 in which two or more skeleton buckets having a plurality of openings are connected and a crushed material 4 is charged.
By making the opening of the skeleton bucket connected to the next stage smaller than the opening of 0, and making the opening provided in the skeleton bucket of the next stage gradually smaller than the opening of the skeleton bucket of the previous stage, By swinging the entire skeleton bucket, it is possible to simultaneously pass a plurality of sieves with one sieving operation.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. However, the embodiments described below exemplify a skeleton bucket for embodying the technical idea of the present invention and a sieving method using the skeleton bucket, and the present invention is a skeleton bucket and a sieving using the skeleton bucket. The method is not specified below.

Further, in this specification, in order to facilitate understanding of the claims, the numbers corresponding to the members shown in the embodiments are referred to as "the claims column" and "to solve the problems. It is added to the members shown in the column of "means". However, the members shown in the claims are not limited to the members of the embodiment. The sizes and positional relationships of members shown in the drawings may be exaggerated for clarity of explanation.

Further, in the present specification, the earth and sand scooped into the skeleton bucket which is the object of sieving, the crushed material,
Collected materials such as debris from the remaining soil are collectively called "crushed materials". In addition, unless otherwise specified, both the first skeleton bucket 10 and the second skeleton bucket 20 are collectively described. Therefore, for example, the term “bottom surface portion” refers to both the first bottom surface portion 12 that configures the first skeleton bucket 10 and the second bottom surface portion 22 that configures the second skeleton bucket 20.

[Embodiment 1] Hereinafter, as Embodiment 1 of the present invention, a perspective view of a second skeleton bucket 20 mounted on a first skeleton bucket 10 is shown in FIG. 3 is a perspective view showing a state in which the skeleton bucket 20 of FIG. The skeleton buckets shown in these figures are container-shaped, one of which is opened as the input port 1 or the receiving port 2, and are provided so as to close a pair of side surface portions that are separated substantially in parallel and a bottom portion along the side surface portions. It is composed of a bottom part. In the illustrated embodiment, the side surface is a flat plate, while the bottom surface is shown in FIG.
A plurality of openings are provided as shown in FIG. These skeleton buckets are made of a material having sufficient strength such as a hard iron plate, a reinforcing bar and a steel frame.

The first skeleton bucket 10 is shown in FIG.
It is possible to use the ones shown in (a) and (b) and those having substantially the same configuration as other standard type skeleton buckets.
The first skeleton bucket 10 shown in FIG. 1B is formed of left and right substantially triangular side surface portions, a top frame, and a bottom tip frame. These planes and frames form a loading port 1 for the crushed material 4 and a dropping port from the back surface to the bottom surface. Also, the first skeleton bucket 10
The grid-like frames 19 are provided on the back and bottom of the
The rigidity of the first skeleton bucket 10 is increased and the first opening 13 is formed. Further, scooping pawls 18 are provided at predetermined intervals at the tip of the bottom end frame of the first skeleton bucket 10. Further, a mounting bracket for attaching to the arm 5 of the hydraulic excavator is projectingly provided on the outer side of the bucket of the upper surface frame, and a pair of brackets for mounting the drive main shaft is provided on the inner side of the left and right side portions on the inner side of the bucket. Are protruding.

On the other hand, the second skeleton bucket 20 is
It is larger than the first skeleton bucket 10 and has a generally elongated shape. This is done so that the second skeleton bucket 20 can reliably capture the crushed material 4 that has been sieved and dropped from the first skeleton bucket 10.
This is because the skeleton bucket 20 of FIG.

[Side Side] Second Skeleton Bucket 20
The shape of the second side surface portion 21 is an inverted trapezoid. However,
Preferably, a sharp curved surface is provided near the apex without providing a sharp apex. By not providing the apex, the operation of scooping the crushed material 4 can be performed smoothly without being stuck at the apex portion, and even when the selected crushed material 4 is discharged, the crushed material 4 cannot be stuck and stopped at the apex portion.
The curved surface facilitates rolling of the crushed material 4. Further, since the apex portion is projected and easily worn, it also has a meaning to prevent this.

As shown in FIG. 2, a plurality of connecting holes 24 for connecting or fixing the first skeleton bucket 10 are provided at predetermined positions at the upper edge of the second side surface portion 21 of the second skeleton bucket 20. It is provided. The first skeleton bucket 10 and the second skeleton bucket 20 are
A method of screwing with a bolt or a hook provided with a notch,
A method of locking and holding a pin or the like, narrow-fitting, etc. can be used. In the example of FIG. 3, a projecting portion is provided from a side surface of the first skeleton bucket 10 to a joint portion with the second skeleton bucket 20, and the projecting portion is detachable via a coupling portion 3 which is fastened to the coupling hole 24 with a bolt. .

In this configuration, since the second skeleton bucket 20 is mounted on the first skeleton bucket 10, the skeleton bucket itself is extremely easily installed as compared with the work of removing the skeleton bucket itself from the arm 5 and replacing it with another bucket. it can. In order to remove the skeleton bucket from the arm 5 of the hydraulic excavator, replace it with another bracket, and attach it, it is necessary to disassemble the drive shaft and bolts of the mounting bracket once and re-tighten, which is extremely troublesome. On the other hand, in the embodiment of the present invention, the connecting portion 3 can be easily attached and detached by operating the connecting portion 3 from the side surface of the bucket. For this reason, the first skeleton bucket 10 can be used as usual, and the second skeleton bucket 20 can be attached as necessary to simplify the sieving work.

[Second Embodiment] The second skeleton bucket 20 may be fixed to the first skeleton bucket 10 by welding, bonding or the like to form a single skeleton bucket. In addition to the weight of the second bucket itself, the weight of the crushed material 4 stored in the bucket,
Since a considerable load such as a shock due to rocking is applied, sufficient strength may be given by welding. This form of the skeleton bucket is the first skeleton bucket 10
Since the second skeleton bucket 20 and the second skeleton bucket 20 are firmly fixed by welding or the like, troubles such as loosening and failure of the connecting portion 3 between the buckets can be avoided, and the first skeleton bucket 10 and the second skeleton bucket 20 can be avoided. 20
It has the advantage that connection work with is unnecessary.

As shown in FIG. 3, the first skeleton bucket 10 and the second skeleton bucket 20 are connected so that the first skeleton bucket 10 is located at the tip of the second skeleton bucket 20. ing. This is because the operation of scooping up the crushed material 4 using the connected bucket and discharging it after sieving can be performed smoothly. That is, during the scooping operation,
By projecting the first skeleton bucket 10 forward, the crushed material 4 can be captured and easily guided into the first skeleton bucket 10. On the other hand, the second skeleton bucket 2
In order to discharge the crushed material 4 selected from 0, the second skeleton bucket 20 can be projected rearward, and a discharge port can be provided on the rear upper surface of the second skeleton bucket 20.

[Embodiment 3] The connecting portion 3 does not necessarily need to fix the buckets to each other. For example, they may be slidable with respect to each other. For example, as shown in FIG. 6, each of the rails 2 is attached to the second side surface portion 21 of the second skeleton bucket 20.
5 is provided, and the rail 25 is provided on the first skeleton bucket 10.
A plurality of rollers 26 that slide along the rail 25
Alternatively, the roller 26 may be guided and slid. A stopper is provided at the end of the rail 25 to prevent the roller 26 from derailing. In this configuration, when the first skeleton bucket 10 is swung by the arm 5,
The inertia causes the second skeleton bucket 20 to move to the rail 25.
It is possible to increase the sieving operation by sliding along the table and swinging it greatly. When swinging, rail 25
A buffer packing made of elastic rubber or the like may be provided in order to absorb the impact when the roller 26 collides with the stopper at the end of the. Further, the sliding mechanism is not limited to the roller, and rails and hooks, ridges, T-shaped rails, bearings, and the like that engage with the rails can be used. Furthermore, a drive unit for sliding may be provided, and a mechanism in which the second skeleton bucket 20 slides by power at the connecting portion 3 may be provided.

[Aperture] FIGS. 4 and 5 (a),
(B), (c) has shown the top view of the pattern which can be utilized as a bottom face part of the 1st and 2nd skeleton bucket. FIG. 4 shows the opening of the first embodiment, which has a rectangular shape as shown. Cylindrical rebars, prismatic iron materials, hard wires, etc. are separated from each other in parallel at a predetermined interval, and in the direction intersecting with them, the rebars are arranged in a grid at predetermined intervals and welded to form a mesh-shaped opening. It consists of multiple parts. Preferably, the opening is rectangular or square. The size of the opening is the crushed material to be sifted 4
The size can be set to a desired size. A skeleton bucket having openings of a plurality of sizes can be used properly according to the application.

Further, the size of the second opening 23 provided in the second skeleton bucket 20 is made smaller than the size of the first opening 13 provided in the first skeleton bucket 10. As a result, the first skeleton bucket 10
The crushed material 4 that has been sifted by and dropped into the second skeleton bucket 20 can be sifted more finely.

[Embodiment 4] The distance between the reinforcing bars can be changed. For example, a plurality of insertion holes for inserting and holding the reinforcing bars are provided at a predetermined interval on the side surface portion, and the reinforcing bars are arranged at intervals of one inserting hole and every two holes, thereby making it possible to reduce the size of the opening. It may be configured to be adjustable.

[Embodiments 5, 6, 7] Further, as a skeleton bucket according to another embodiment of the present invention, Embodiments 5, 6, 7 in which the pattern of the bottom portion is changed are shown in FIG.
Shown in (a), (b) and (c). In FIG. 5 (a), the reinforcing bars are crossed diagonally to form an opening with a diamond shape. Figure 5 (b)
In, a circular or elliptical opening is formed in an iron plate by punching or punching. Further, in the example of FIG. 5C, a plurality of triangular openings are similarly provided on the bottom surface of the iron plate by punching or the like. These patterns are examples, and may be, for example, hexagonal or other polygonal patterns, semi-circles, fans, trapezoids, slits, or the like. The shapes and sizes of these openings are almost constant except for some errors, and are distributed as uniformly as possible on the bottom surface. The openings are provided in the first skeleton bucket 10 and the second skeleton bucket 20, respectively, but they do not necessarily have to have the same pattern. The embodiment according to the present invention is not characterized in that the size of the sieving is defined, but is characterized in that a plurality of sievings are performed at the same time. Therefore, a specific shape or method for each sieving is not specified. As the shape and structure for sieving, conventionally used ones and those developed in the future can be appropriately used.

The bottom surface portion is provided in a direction orthogonal to the side surface portion as shown in FIGS. The bottom surface portion shown in these figures is continuously provided along the edge of the side surface portion. Second side surface portion 21 of second skeleton bucket 20
Has an inverted trapezoidal shape protruding downward as shown in FIG. These inclinations are such that the angle formed by the front side located in the rake direction, that is, the slope on the right side in FIG. 7 with the side forming the receiving port 2 at the upper end edge of the side surface portion is θ1,
Similarly, the angle formed by the slope on the left side and the upper edge of the side surface portion is θ2. In the example of FIG. 7, θ1 and θ2 are different from each other, and θ1 is an acute angle than θ2. Preferably, the front θ1 is 15 ° to 60 °. At an angle within this range, the crushed material 4 can be easily scooped as shown in FIG.
On the contrary, if the angle is larger than this, the second skeleton bucket 20 becomes an obstacle when the first skeleton bucket 10 tries to scoop up the crushed material 4. Therefore, the above angle range is preferable, and 40 ° is more preferable.
To be 45 °.

The rearward θ2 is preferably 45 ° to
80 °. The reason why it is slightly dull than θ1 is to make it easier to discharge the crushed material 4 selected as shown in FIG. 17 described later. On the contrary, if the angle is made smaller than this, the crushed material 4 is likely to be spilled to the outside during the sieving swing. Therefore, the above angle range is preferable, and 60 ° is more preferable. However, θ1 and θ2 do not necessarily have to be larger than θ1 and may be equal to each other as shown in FIG. See also FIG.
As shown in (b), it may be semicircular.

[Embodiment 8] It is not always necessary to provide the bottom surface portion along the edge of the side surface portion. For example, as shown in the sectional view of FIG.
The bottom surface portion may be fixed at a position away from the edge. This configuration can be used as a guide plate that prevents the crushed material 4 falling down the marginal portion of the side surface from scattering around.

[Embodiment 9] Furthermore, the shape of the second skeleton bucket 20 may be such that the rear end portion is flipped upward as shown in FIG. Figure 10
FIG. 10A is a view in which the rear end of the opening end is bent to project.
In (b), the rear end is curved. This structure allows the second skeleton bucket 20 that has been flipped upward to more reliably capture the crushed material 4 that has been sieved from the first skeleton bucket 10 and discharged from the vicinity of the back surface to the distance. As for the method of jumping up, it is possible to bend it in a straight line as shown in FIG.
It may be curved and flipped up as shown in (b). When swinging and sieving, the crushed material 4 surely catches jumping out of the first skeleton bucket 10, and the crushed material 4 does not spill out to the outside when rocking the second skeleton bucket 20. It is possible to reliably capture. In particular, the second skeleton bucket 20 shown in FIG. 10 (b) is connected so as to cover a wide area from the back surface to the bottom surface of the first skeleton bucket 10, and the crushed material screened by the first skeleton bucket 10 4 more reliably the second skeleton bucket 20
Can be received at. This configuration is particularly effective in the case where the crushed material 4 tends to jump out of the bucket during sieving with a small inclination angle as in the eighth embodiment.
It has the advantage that it can be reliably screened by preventing the jumping out of. This is because the back surface portion of the second skeleton bucket 20 that is curved and flipped up can reliably capture the crushed material 4 that tends to jump out vigorously when rocking. Further, in the example of FIG. 10B, since the bottom surface portion is also curved, there is an advantage that the crushed material 4 is smoothly discharged without being obstructed by the bent portion when being taken out.
Further, in FIG. 10B, the curved slope of the bottom portion is made gentle and the protrusion on the receiving port 2 side is made steep,
At the same time, it has two characteristics that the sieving area is wide in the lower part and that the crushed material 4 is effectively prevented from jumping out in the upper part.

When discharging the second sorted matter from the second skeleton bucket 20, the skeleton bucket is rotated more than in the case of FIG. Discharge. Especially in FIG.
When the degree of protrusion of the rear end is large as in (b),
The shape of the bottom part is also curved according to this, and the second
The sorted items are easy to roll along the curved surface and are discharged smoothly.

The pop-out prevention plate may be provided as a separate member on the second side surface portion 21. Further, although not shown, a lid is provided at the rear end of the bucket so as not to prevent downward falling,
It is possible to prevent jumping out in the lateral direction from above.
The lid can be detachable, or can be kept closed when rocked by a lock mechanism, and unlocked when ejected so that it can be opened by its own weight.

[Embodiments 10 and 11] Further, Embodiment 1
It is also possible to use 0 instead of a flat plate for the side surface portion, as shown in FIG. 11, in which a plurality of openings are provided as in the case of the bottom surface portion. For example, as shown in FIG. 12, in the first skeleton bucket 110, the side surface is closed with a flat plate as in the above, and the side surface of the second skeleton bucket 120 is substantially the same as the bottom surface. A plurality of openings having the same size as the second openings 23 are provided. Alternatively, as Example 11, as shown in FIGS. 13 and 14, both the first skeleton bucket 210 and the second skeleton bucket 220 have openings similar to the first and second openings on the side surfaces. It is also possible to use one.
In this case, since the crushed material 4 is sieved from the side surface of the first skeleton bucket 210 as well, the second skeleton bucket 220 has a larger width than the first skeleton bucket 120, and the crushed material scattered laterally. I try to catch 4.

[Embodiments 12 and 13] Further, the second skeleton bucket 20 is not limited to the method of connecting to the first skeleton bucket 10 so as to cover only the bottom surface as shown in FIG. As shown in FIG. 15 and FIG. 16, it may be configured to be connected so as to cover the back surface or the back surface to the bottom surface. The second skeleton bucket 320 shown in FIG. 15 has a shape that matches the curved surface portion of the back surface of the first skeleton bucket 310, and forms a connecting surface with the first skeleton bucket 310. In the bucket of this form, since the second skeleton bucket 320 does not project downward, there is an advantage that the second skeleton bucket 320 does not get in the way during the scooping operation of the crushed material 4 and can be smoothly scooped. The second skeleton bucket 420 shown in FIG. 16 has a shape that matches the curved surface portion of the first skeleton bucket 410 from the back surface to the bottom surface, and forms a connecting surface with the first skeleton bucket 410.

[Sieving Work] The sorting work using the skeleton bucket according to the above embodiment has a flow as shown in FIG. First, as shown in FIG. 17 (a), the crushed material 4 is crushed by the first skeleton bucket 10 by utilizing the arm 5 equipped with the skeleton bucket and the rotation of the bucket.
Scoop up

Then, as shown in FIG. 17B, the arm 5 is shaken for sieving. By this, the first
First opening 1 provided in the skeleton bucket 10 of
Large crushed material 4A that cannot pass 3 remains in the first skeleton bucket 10. Then, of the crushed material that has passed through the first opening 13, a small crushed material 4B that cannot pass through the second opening 23 provided in the second skeleton bucket 20.
Remain in the second skeleton bucket 20. Finally, the second
The finely crushed material 4C and earth and sand smaller than the opening 23 of the above are sieved and fall downward from the skeleton bucket. In this way, the crushed materials are sorted into three sizes, large, small and fine.

First, the smallest crushed material 4C of the smallest size that has fallen downward and accumulated on the ground is collected. Next, FIG.
As shown in (c), the skeleton bucket is rotated toward the front to remove the small crushed material 4B from the second skeleton bucket 2.
Discharge from 0 to the ground. For example, the arm 5 is moved to a position different from the position where the fine crushed material 4C has dropped, and the small crushed material 4B is piled up on the ground so as not to be mixed with the fine crushed material 4C.

Finally, the largest crushed material 4A remaining in the first skeleton bucket 10 is discharged. By rotating the skeleton bucket in the opposite direction, large crushed material 4A
Falls to the ground. As a result, a relatively large-sized crushed material held by the first skeleton bucket 10, a small crushed material 4B that passes through the first skeleton bucket 10 and is held by the second skeleton bucket 20, and It is possible to simultaneously perform three types of sorting, that is, the finely crushed material 4C that passes through the second opening portion 23 of the second skeleton bucket 20 and falls. In addition, the crushed materials respectively selected can be collected without being mixed with each other.

[Embodiment 14] In the embodiment of the present invention,
Although an example is shown in which skeleton buckets having different openings are connected in two stages, it is also possible to connect three or more stages as shown in FIG. In this case, the first located in the first stage
Of the second skeleton bucket 520 of the second tier and the third skeleton bucket 530 of the third tier, and the opening of the skeleton bucket of It is possible to select the crushed material 4 according to the crushed material. In addition, it is desirable that the outer shape of the bucket be larger than that of the bucket connected to the rear stage in order to reliably capture the crushed material 4 falling from the bucket at the front stage. However, if the number of connecting stages of the bucket is too large, the weight of the entire bucket becomes heavier and the arm 5
The load on the connection part and the drive part is increased. Further, since the size of the entire bucket is enlarged, there is a problem that it becomes difficult to scoop and discharge the crushed material 4 with a shovel. Therefore, the skeleton bucket is preferably 3 stages or less, and most preferably 2 stages.

[0050]

As described above, according to the skeleton bucket of the present invention and the sieving method using the skeleton bucket, a feature that a plurality of sorts can be simultaneously performed by one sieving operation is realized. The skeleton bucket of the present invention and the sieving method using the skeleton bucket have a unique configuration in which skeleton buckets having openings of different sizes are connected in multiple stages. This is because sorting according to the size of the parts can be performed at the same time. For example, if the first and second skeleton buckets are connected in two stages,
Three kinds of crushed materials can be sorted by one sorting operation. With this configuration, it is possible to omit the repetitive work of scooping, rocking, and discharging a plurality of times with a plurality of types of skeleton buckets, replacing the skeleton bucket, and performing scooping again. In particular, in the conventional method, if one wants to further sort what has been sorted, he must start again with scooping,
It was an inefficient task. On the other hand, according to the configuration of the present invention, it is not necessary to discharge each time sorting is performed, and the crushed material sorted by the first skeleton bucket is sent to the second skeleton bucket as it is, thus omitting repetitive work. Therefore, the sorting work can be shortened both in terms of process and time.

Furthermore, according to the skeleton bucket of the present invention and the sieving method using the skeleton bucket, it is not necessary to replace a plurality of types of skeleton buckets having different opening sizes each time sieving is carried out, which is a troublesome skeleton bucket. The replacement work can be omitted. For the work of separating and exchanging the bucket fixed to the tip of the arm etc., the bucket has a movable part with the arm,
Furthermore, it was necessary to connect a drive part such as a hydraulic piston, which was extremely complicated and time-consuming. On the other hand, in the present invention, exchange is performed by using buckets of multiple stages,
It is possible to save the trouble of mounting. In addition, it is not necessary to move the device one by one from the site of the sorting work to replace the bucket. On the other hand, the skeleton bucket can be moved freely at the work site, providing a convenient and convenient environment.

The present invention also has an advantage that the work of connecting buckets can be easily performed. When the bucket is attached to the tip of the arm, it is complicated because there is a rotating part and a driving part. However, in the present invention, the skeleton bucket already connected to the arm or the like has a second skeleton like an attachment. Since it is a method of mounting a bucket, it can be easily attached and detached. Therefore, the time-consuming bucket exchange work can be significantly shortened, and the advantage that the work can be performed easily and quickly can be enjoyed.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an example of a first skeleton bucket according to an embodiment of the present invention.

FIG. 2 is a schematic perspective view showing a second skeleton bucket according to an embodiment of the present invention.

FIG. 3 shows a second skeleton bucket shown in FIG.
FIG. 3 is a schematic perspective view showing a state in which the skeleton bucket is mounted on the skeleton bucket.

FIG. 4 is a plan view showing a bottom surface portion of a skeleton bucket provided with an opening.

FIG. 5 is a plan view showing a bottom surface portion of a skeleton bucket provided with an opening according to another embodiment of the present invention.

6A and 6B are a schematic perspective view and a side view showing a skeleton bucket in which a sliding mechanism is provided at a connecting portion according to a third embodiment of the present invention.

7 is a side view showing a side surface portion of the second skeleton bucket in FIG. 2. FIG.

FIG. 8 is a side view showing a side surface portion of a second skeleton bucket according to still another embodiment of the present invention.

FIG. 9 is a cross-sectional view showing a side surface portion of a skeleton bucket according to still another embodiment of the present invention.

FIG. 10 is a sectional view showing a side surface portion of a second skeleton bucket according to still another embodiment of the present invention.

FIG. 11 is a schematic perspective view showing a second skeleton bucket according to still another embodiment of the present invention.

FIG. 12 is a side view showing a skeleton bucket according to still another embodiment of the present invention.

FIG. 13 is a side view showing a skeleton bucket according to still another embodiment of the present invention.

FIG. 14 is a schematic perspective view of the skeleton bucket shown in FIG.

FIG. 15 is a sectional view showing a side surface portion of a skeleton bucket according to still another embodiment of the present invention.

FIG. 16 is a sectional view showing a side surface portion of a skeleton bucket according to still another embodiment of the present invention.

FIG. 17 is a schematic diagram showing a flow of a sorting operation using the skeleton bucket according to the embodiment of the present invention.

FIG. 18 is a sectional view showing a side surface portion of a skeleton bucket according to still another embodiment of the present invention.

[Explanation of symbols]

1 ... Input port 2 ... Receiving port 3 ... Connection part 4 ... Crushed object 4A ... Large crushed object 4B ... Small crushed object 4C ... Fine crushed object 5 ... Arm 10 ... 1st skeleton bucket 10A ... Skeleton bucket 11 ... 1st side surface part 12 ... 1st bottom face part 13 ... 1st opening part 18 ... Rake nail 19 ... lattice-shaped frame 20 ... second skeleton bucket 21 ... second side surface 22 ... second bottom surface 23 ... second opening 24 ... connection hole 25 ... .. Rails 26 ... Rollers 110, 210, 310, 410, 510 ... First skeleton buckets 120, 220, 320, 420, 520 ... Second skeleton buckets 530 ... Third skeletons bucket

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[Procedure amendment]

[Submission date] April 22, 2002 (2002.4.2)
2)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction content]

[Document name] Statement

Title: Skeleton bucket and sieving method using the same

[Claims]

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a skeleton type perforated bucket having a sieving function. It relates to a bucket for sifting.

[0002]

2. Description of the Related Art Conventionally, stone materials generated when a building is demolished,
Gara such as concrete material is first crushed by a crusher, and then crushed material is scooped using a skeleton bucket 10A having a lattice-shaped frame 19 on the bottom surface as shown in FIGS. 1 (a) and (b). This skeleton bucket 10
By operating the arm 5 of the hydraulic excavator to which A is attached, a crushed material of a required size is dropped from the hole partitioned by the frame of the skeleton bucket 10A, and sieving is performed according to the size of the crushed material. Was there. Further, not only the crushed material as described above, but also sieving work of cobblestone, gravel collection, earth and sand, etc. has been performed using the skeleton bucket as in the above.

A skeleton bucket having such a sieving function and an apparatus related to the skeleton bucket are disclosed in, for example, Japanese Unexamined Patent Publication No. Hei 1
No. 1-323996 (skeleton bucket with sieving device), Japanese Patent Laid-Open No. 2000-336689 (working device for work vehicle), Japanese Patent Laid-Open No. 2001-74398 (mine mine processing / farmland improving device), Jikkaihei 07-17849. Publication (combined body with perforated bucket and non-perforated bucket), Japanese Utility Model Laid-Open No. 62-228533 (gravel sorter), JP-A-08
No. 60694 (Excavation and sieving / sorting device for a self-propelled vehicle for work), Japanese Patent Laid-Open No. 09-189045 (swivel type clam bucket), Japanese Patent Laid-Open No. 2000-279890 (sediment sieving device), Japanese Patent Laid-Open No. 2000-319919. Japanese Unexamined Patent Application Publication No. (debris bucket) and Japanese Unexamined Patent Publication No. 2001-98575 (grip fork attachment of a power shovel in a backhoe).

[0004]

However, in each of the techniques described in the above publications, one bucket is used to swing and scoop the scraped crushed material with a skeleton bucket. Therefore, it was necessary to change the bucket in order to change the size of the crushed material to be sorted and perform the sieving. Although buckets attached to the ends of arms and booms can generally be replaced with attachments, the replacement of them is extremely time-consuming and tedious work. In particular, since the bucket has a movable part, it is necessary to attach a movable shaft and a drive pipe, which makes the work complicated. Therefore, if the size of the crushed material to be selected is selected first, and then the smaller material is selected from the selected crushed material, once a bucket having a large opening is attached to the arm and sieved, After that, it was necessary to replace the bucket with one having a small opening and then perform sieving again, which was a time-consuming and labor-intensive operation.

The present invention has been made to solve such a problem. It is a main object of the present invention to provide a skeleton bucket capable of performing a plurality of sieving operations at one time and a sieving method using the skeleton bucket.

[0006]

In order to achieve the above object, a skeleton bucket according to claim 1 of the present invention has a plurality of openings. This skeleton bucket includes a first skeleton bucket 10 and a second skeleton bucket 20. The first skeleton bucket 10 includes a pair of first side surface portions 11 that are spaced apart substantially in parallel and arranged in a pair, and in a direction orthogonal to the first side surface portion 11 so that at least one of the side surface portions 11 is opened as an input port 1. A first bottom surface portion 12 connecting the pair of first side surface portions 11 is provided, and the first bottom surface portion 12 is provided with a plurality of first openings 13. Further, the second skeleton bucket 20 is provided with a pair of second side surface portions 21 spaced apart substantially in parallel with each other, and at least one of the second side surface portions 21 is opened as the receiving port 2.
And a second bottom surface portion 22 in a direction perpendicular to the side surface portion 21 connecting the pair of second side portions 21 of the second bottom surface portion 22 is smaller than the first opening 13 A plurality of two openings 23 are provided. The skeleton bucket, characterized in that the second skeleton bucket 20 in a portion other than the inlet 1 of the first skeleton bucket 10 is connected in a detachable state.

Further, in the skeleton bucket described in claim 2 of the present invention, in addition to the features described in claim 1, at least one of the first bottom surface portion 12 and the second bottom surface portion 22 is It is characterized in that it is fixed along substantially the edge of the first side surface portion 11 or the second side surface portion 21.

Further, in the skeleton bucket described in claim 3 of the present invention, in addition to the features described in claim 1 or 2, the space between the pair of first side surface portions 11 and the pair of first side surface portions 11 are provided. The intervals between the two side surface parts 21 are almost the same,
The first skeleton bucket 10 and the second skeleton bucket 20 are connected so that the first side surface portion 11 and the second side surface portion 21 are substantially in the same plane.

Further, in addition to the features described in any one of claims 1 to 3, the skeleton bucket described in claim 4 of the present invention is such that the first skeleton bucket 10 projects in the rake direction. As described above, the first skeleton bucket 10 and the second skeleton bucket 20 are connected to each other.

A skeleton bucket according to claim 5 of the present invention is the skeleton bucket according to any one of claims 1 to 4, wherein the second skeleton bucket 20 is a first skeleton bucket. It is characterized in that it is fixed to 10.

Furthermore, the skeleton bucket according to claim 6 of the present invention is a second skeleton bucket 20 which can be mounted on the first skeleton bucket 10 having a plurality of first openings 13. This skeleton bucket includes a pair of second side surface portions 21 that are spaced apart substantially in parallel and arranged in a pair, and a pair of second side surface portions 21 in a direction orthogonal to the second side surface portion 21 so that at least one of the second side surface portions 21 opens as a receiving port 2. Second bottom surface portion 22 to which the side surface portion 21 is connected, and the second bottom surface portion 22 includes a plurality of second opening portions 23 smaller than the first opening portion 13. .

A skeleton bucket according to a seventh aspect of the present invention is the skeleton bucket according to any one of the first to fifth aspects, further comprising the first skeleton bucket 10 and the second skeleton bucket. Connection part 3 with 20
It is characterized by being able to slide with each other.

Furthermore, the skeleton bucket according to claim 8 of the present invention is the second side surface portion of the second skeleton bucket 20 in addition to the features according to any one of claims 1 to 6. 21 is characterized in that it has a shape protruding in a mountain shape on at least one side.

Here, the shape projecting in a mountain shape may be an inverted trapezoid projecting downward, an inverted triangle, a semicircle, or the like. Further, at least one of the sides intersecting with the side forming the receiving port 2 can be inclined.

Furthermore, the skeleton bucket according to claim 9 of the present invention is the second skeleton bucket of the second skeleton bucket 20 in addition to the features according to any one of claims 1 to 6 or 8 . side section 21 is a reverse trapezoid which protrudes downward, a front side positioned on the inverted trapezoidal shape scooping direction and is inclined back side located in the opposite direction, the first slope of the front side Is more acute than the second inclination on the back surface side with respect to the side forming the receiving port 2.

Furthermore, the skeleton bucket according to claim 10 of the present invention is the second side surface portion of the second skeleton bucket 20 in addition to the features according to any one of claims 1 to 9. 21 is characterized in that the first inclination on the front surface side forms an angle of 15 ° to 60 ° with the side forming the receiving port 2.

Furthermore, the skeleton bucket according to claim 11 of the present invention is the second side surface portion of the second skeleton bucket 20 in addition to the features according to claim 9 or 10. In the case of No. 21, the angle formed between the second slope on the back side and the side forming the receiving port 2 is 45 ° to 80 °.
Is characterized in that.

Furthermore, in addition to the features described in any one of claims 1 to 11, the skeleton bucket described in claim 12 of the present invention is a flat plate in which the side surface portion has no opening. Is characterized by.

Furthermore, the skeleton bucket according to claim 13 of the present invention is the skeleton bucket according to any one of claims 1 to 11 , in addition to the second side surface portion 21.
However, it has a plurality of openings similar to the second opening 23.

Furthermore, a sieving method using a skeleton bucket according to claim 14 of the present invention is
A first skeleton bucket 1 in which two or more skeleton buckets having a plurality of openings are connected and a crushed material 4 is charged.
By making the opening of the skeleton bucket connected to the next stage smaller than the opening of 0, and making the opening provided in the skeleton bucket of the next stage gradually smaller than the opening of the skeleton bucket of the previous stage, By swinging the entire skeleton bucket, it is possible to simultaneously pass a plurality of sieves with one sieving operation.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. However, the embodiments described below exemplify a skeleton bucket for embodying the technical idea of the present invention and a sieving method using the skeleton bucket, and the present invention is a skeleton bucket and a sieving using the skeleton bucket. The method is not specified below.

Further, in this specification, in order to facilitate understanding of the claims, the numbers corresponding to the members shown in the embodiments are referred to as "the claims column" and "to solve the problems. It is added to the members shown in the column of "means". However, the members shown in the claims are not limited to the members of the embodiment. The sizes and positional relationships of members shown in the drawings may be exaggerated for clarity of explanation.

Further, in the present specification, the earth and sand scooped into the skeleton bucket which is the object of sieving, the crushed material,
Collected materials such as debris from the remaining soil are collectively called "crushed materials". In addition, unless otherwise specified, both the first skeleton bucket 10 and the second skeleton bucket 20 are collectively described. Therefore, for example, the term “bottom surface portion” refers to both the first bottom surface portion 12 that configures the first skeleton bucket 10 and the second bottom surface portion 22 that configures the second skeleton bucket 20.

[Embodiment 1] Hereinafter, as Embodiment 1 of the present invention, a perspective view of a second skeleton bucket 20 mounted on a first skeleton bucket 10 is shown in FIG. 3 is a perspective view showing a state in which the skeleton bucket 20 of FIG. The skeleton buckets shown in these figures are container-shaped, one of which is opened as the input port 1 or the receiving port 2, and are provided so as to close a pair of side surface portions that are separated substantially in parallel and a bottom portion along the side surface portions. It is composed of a bottom part. In the illustrated embodiment, the side surface is a flat plate, while the bottom surface is shown in FIG.
A plurality of openings are provided as shown in FIG. These skeleton buckets are made of a material having sufficient strength such as a hard iron plate, a reinforcing bar and a steel frame.

The first skeleton bucket 10 is shown in FIG.
It is possible to use the ones shown in (a) and (b) and those having substantially the same configuration as other standard type skeleton buckets.
The first skeleton bucket 10 shown in FIG. 1B is formed of left and right substantially triangular side surface portions, a top frame, and a bottom tip frame. These planes and frames form a loading port 1 for the crushed material 4 and a dropping port from the back surface to the bottom surface. Also, the first skeleton bucket 10
The grid-like frames 19 are provided on the back and bottom of the
The rigidity of the first skeleton bucket 10 is increased and the first opening 13 is formed. Further, scooping pawls 18 are provided at predetermined intervals at the tip of the bottom end frame of the first skeleton bucket 10. Further, a mounting bracket for attaching to the arm 5 of the hydraulic excavator is projectingly provided on the outer side of the bucket of the upper surface frame, and a pair of brackets for mounting the drive main shaft is provided on the inner side of the left and right side portions on the inner side of the bucket. Are protruding.

On the other hand, the second skeleton bucket 20 is
It is larger than the first skeleton bucket 10 and has a generally elongated shape. This is done so that the second skeleton bucket 20 can reliably capture the crushed material 4 that has been sieved and dropped from the first skeleton bucket 10.
This is because the skeleton bucket 20 of FIG.

[Side Side] Second Skeleton Bucket 20
The shape of the second side surface portion 21 is an inverted trapezoid. However,
Preferably, a sharp curved surface is provided near the apex without providing a sharp apex. By not providing the apex, the operation of scooping the crushed material 4 can be performed smoothly without being stuck at the apex portion, and even when the selected crushed material 4 is discharged, the crushed material 4 cannot be stuck and stopped at the apex portion,
The curved surface facilitates rolling of the crushed material 4. Further, since the apex portion is projected and easily worn, it also has a meaning to prevent this.

As shown in FIG. 2, a plurality of connecting holes 24 for connecting or fixing the first skeleton bucket 10 are provided at predetermined positions at the upper edge of the second side surface portion 21 of the second skeleton bucket 20. It is provided. The first skeleton bucket 10 and the second skeleton bucket 20 are
A method of screwing with a bolt or a hook provided with a notch,
A method of locking and holding a pin or the like, a tight fit, etc. can be used. In the example of FIG. 3, a projecting portion is provided from a side surface of the first skeleton bucket 10 to a joint portion with the second skeleton bucket 20, and the projecting portion is detachable via a coupling portion 3 which is fastened to the coupling hole 24 with a bolt. .

In this configuration, since the second skeleton bucket 20 is mounted on the first skeleton bucket 10, the skeleton bucket itself is extremely easily installed as compared with the work of removing the skeleton bucket itself from the arm 5 and replacing it with another bucket. it can. In order to remove the skeleton bucket from the arm 5 of the hydraulic excavator, replace it with another bracket, and attach it, it is necessary to disassemble the drive shaft and bolts of the mounting bracket once and re-tighten, which is extremely troublesome. On the other hand, in the embodiment of the present invention, the connecting portion 3 can be easily attached and detached by operating the connecting portion 3 from the side surface of the bucket. For this reason, the first skeleton bucket 10 can be used as usual, and the second skeleton bucket 20 can be attached as necessary to simplify the sieving work.

[Second Embodiment] The second skeleton bucket 20 may be fixed to the first skeleton bucket 10 by welding, bonding or the like to form a single skeleton bucket. In addition to the weight of the second bucket itself, the weight of the crushed material 4 stored in the bucket,
Since a considerable load such as a shock due to rocking is applied, sufficient strength may be given by welding. This form of the skeleton bucket is the first skeleton bucket 10
Since the second skeleton bucket 20 and the second skeleton bucket 20 are firmly fixed by welding or the like, troubles such as loosening and failure of the connecting portion 3 between the buckets can be avoided, and the first skeleton bucket 10 and the second skeleton bucket 20 can be avoided. 20
It has the advantage that connection work with is unnecessary.

As shown in FIG. 3, the first skeleton bucket 10 and the second skeleton bucket 20 are connected so that the first skeleton bucket 10 is located at the tip of the second skeleton bucket 20. ing. This is because the operation of scooping up the crushed material 4 using the connected bucket and discharging it after sieving can be performed smoothly. That is, during the scooping operation,
By projecting the first skeleton bucket 10 forward, the crushed material 4 can be captured and easily guided into the first skeleton bucket 10. On the other hand, the second skeleton bucket 2
In order to discharge the crushed material 4 selected from 0, the second skeleton bucket 20 can be projected rearward, and a discharge port can be provided on the rear upper surface of the second skeleton bucket 20.

[Embodiment 3] The connecting portion 3 does not necessarily need to fix the buckets to each other. For example, they may be slidable with respect to each other. For example, as shown in FIG. 6, the rails 2 are attached to the second side surface portion 21 of the second skeleton bucket 20, respectively.
5 is provided, and the rail 25 is provided on the first skeleton bucket 10.
A plurality of rollers 26 that slide along the rail 25
Alternatively, the roller 26 may be guided and slid. A stopper is provided at the end of the rail 25 to prevent the roller 26 from derailing. In this configuration, when the first skeleton bucket 10 is swung by the arm 5,
The inertia causes the second skeleton bucket 20 to move to the rail 25.
It is possible to increase the sieving operation by sliding along the table and swinging it greatly. When swinging, rail 25
A buffer packing made of elastic rubber or the like may be provided in order to absorb the impact when the roller 26 collides with the stopper at the end of the. Further, the sliding mechanism is not limited to the roller, and rails and hooks, ridges, T-shaped rails, bearings, and the like that engage with the rails can be used. Furthermore, a drive unit for sliding may be provided, and a mechanism in which the second skeleton bucket 20 slides by power at the connecting portion 3 may be provided.

[Aperture] FIGS. 4 and 5 (a),
(B), (c) has shown the top view of the pattern which can be utilized as a bottom face part of the 1st and 2nd skeleton bucket. FIG. 4 shows the opening of the first embodiment, which has a rectangular shape as shown. Cylindrical rebars, prismatic iron materials, hard wires, etc. are separated from each other in parallel at a predetermined interval, and in the direction intersecting with them, the rebars are arranged in a grid at predetermined intervals and welded to form a mesh-shaped opening. It consists of multiple parts. Preferably, the opening is rectangular or square. The size of the opening is the crushed material to be sifted 4
The size can be set to a desired size. A skeleton bucket having openings of a plurality of sizes can be used properly according to the application.

Further, the size of the second opening 23 provided in the second skeleton bucket 20 is made smaller than the size of the first opening 13 provided in the first skeleton bucket 10. As a result, the first skeleton bucket 10
The crushed material 4 that has been sifted by and dropped into the second skeleton bucket 20 can be sifted more finely.

[Embodiment 4] The distance between the reinforcing bars can be changed. For example, a plurality of insertion holes for inserting and holding the reinforcing bars are provided at a predetermined interval on the side surface portion, and the reinforcing bars are arranged at intervals of one inserting hole and every two holes, thereby making it possible to reduce the size of the opening. It may be configured to be adjustable.

[Embodiments 5, 6, 7] Further, as a skeleton bucket according to another embodiment of the present invention, Embodiments 5, 6, 7 in which the pattern of the bottom portion is changed are shown in FIG.
Shown in (a), (b) and (c). In FIG. 5 (a), the reinforcing bars are crossed diagonally to form an opening with a diamond shape. Figure 5 (b)
In, a circular or elliptical opening is formed in an iron plate by punching or punching. Further, in the example of FIG. 5C, a plurality of triangular openings are similarly provided on the bottom surface of the iron plate by punching or the like. These patterns are examples, and may be, for example, hexagonal or other polygonal patterns, semi-circles, fans, trapezoids, slits, or the like. The shapes and sizes of these openings are almost constant except for some errors, and are distributed as uniformly as possible on the bottom surface. The openings are provided in the first skeleton bucket 10 and the second skeleton bucket 20, respectively, but they do not necessarily have to have the same pattern. The embodiment according to the present invention is not characterized in that the size of the sieving is defined, but is characterized in that a plurality of sievings are performed at the same time. Therefore, a specific shape or method for each sieving is not specified. As the shape and structure for sieving, conventionally used ones and those developed in the future can be appropriately used.

The bottom surface portion is provided in a direction orthogonal to the side surface portion as shown in FIGS. The bottom surface portion shown in these figures is continuously provided along the edge of the side surface portion. Second side surface portion 21 of second skeleton bucket 20
Has an inverted trapezoidal shape protruding downward as shown in FIG. These inclinations have an angle θ1 formed by the front side located in the rake direction, that is, the slope on the right side in FIG.
Similarly, the angle formed by the slope on the left side and the upper edge of the side surface portion is θ2. In the example of FIG. 7, θ1 and θ2 are different from each other, and θ1 is an acute angle than θ2. Preferably, the front θ1 is 15 ° to 60 °. At an angle within this range, the crushed material 4 can be easily scooped as shown in FIG.
On the contrary, if the angle is larger than this, the second skeleton bucket 20 becomes an obstacle when the first skeleton bucket 10 tries to scoop up the crushed material 4. Therefore, the above angle range is preferable, and 40 ° is more preferable.
To be 45 °.

The rearward θ2 is preferably 45 ° to
80 °. The reason why it is slightly dull than θ1 is to make it easier to discharge the crushed material 4 selected as shown in FIG. 17 described later. On the contrary, if the angle is made smaller than this, the crushed material 4 is likely to be spilled to the outside during the sieving swing. Therefore, the above angle range is preferable, and 60 ° is more preferable. However, θ1 and θ2 do not necessarily have to be larger than θ1 and may be equal to each other as shown in FIG. See also FIG.
As shown in (b), it may be semicircular.

[Embodiment 8] It is not always necessary to provide the bottom surface portion along the edge of the side surface portion. For example, as shown in the sectional view of FIG.
The bottom surface portion may be fixed at a position away from the edge. This configuration can be used as a guide plate that prevents the crushed material 4 falling down the marginal portion of the side surface from scattering around.

[Embodiment 9] Furthermore, the shape of the second skeleton bucket 20 may be such that the rear end portion is flipped upward as shown in FIG. Figure 10
FIG. 10A is a view in which the rear end of the opening end is bent to project.
In (b), the rear end is curved. This structure allows the second skeleton bucket 20 that has been flipped upward to more reliably capture the crushed material 4 that has been sieved from the first skeleton bucket 10 and discharged from the vicinity of the back surface to the distance. As for the method of jumping up, it is possible to bend it in a straight line as shown in FIG.
It may be curved and flipped up as shown in (b). When swinging and sieving, the crushed material 4 is surely caught when jumping out of the first skeleton bucket 10, and when the second skeleton bucket 20 is rocked, the crushed material 4 does not spill out to the outside. It is possible to reliably capture. In particular, the second skeleton bucket 20 shown in FIG. 10 (b) is connected so as to cover a wide area from the back surface to the bottom surface of the first skeleton bucket 10, and the crushed material screened by the first skeleton bucket 10 4 more reliably the second skeleton bucket 20
Can be received at. This configuration is particularly effective in the case where the crushed material 4 tends to jump out of the bucket during sieving with a small inclination angle as in the eighth embodiment.
It has the advantage that it can be reliably screened by preventing the jumping out of. This is because the back surface portion of the second skeleton bucket 20 that is curved and flipped up can reliably capture the crushed material 4 that tends to jump out vigorously when rocking. Further, in the example of FIG. 10B, since the bottom surface portion is also curved, there is an advantage that the crushed material 4 is smoothly discharged without being obstructed by the bent portion when the crushed material 4 is taken out.
Further, in FIG. 10B, the curved slope of the bottom portion is made gentle and the protrusion on the receiving port 2 side is made steep,
At the same time, it has two characteristics that the sieving area is wide in the lower part and that the crushed material 4 is effectively prevented from jumping out in the upper part.

When discharging the second sorted matter from the second skeleton bucket 20, the skeleton bucket is rotated more than in the case of FIG. Discharge. Especially in FIG.
When the degree of protrusion of the rear end is large as in (b),
The shape of the bottom part is also curved according to this, and the second
The sorted items are easy to roll along the curved surface and are discharged smoothly.

The pop-out prevention plate may be provided as a separate member on the second side surface portion 21. Further, although not shown, a lid is provided at the rear end of the bucket so as not to prevent downward falling,
It is possible to prevent jumping out in the lateral direction from above.
The lid can be detachable, or can be kept closed when rocked by a lock mechanism, and unlocked when ejected so that it can be opened by its own weight.

[Embodiments 10 and 11] Further, Embodiment 1
It is also possible to use 0 instead of a flat plate for the side surface portion, as shown in FIG. 11, in which a plurality of openings are provided as in the case of the bottom surface portion. For example, as shown in FIG. 12, in the first skeleton bucket 110, the side surface is closed with a flat plate as in the above, and the side surface of the second skeleton bucket 120 is substantially the same as the bottom surface. A plurality of openings having the same size as the second openings 23 are provided. Alternatively, as Example 11, as shown in FIGS. 13 and 14, both the first skeleton bucket 210 and the second skeleton bucket 220 have openings similar to the first and second openings on the side surfaces. It is also possible to use one.
In this case, since the crushed material 4 is sieved from the side surface of the first skeleton bucket 210, the second skeleton bucket 220 has a larger width than the first skeleton bucket 120, and the crushed material scattered laterally. I try to catch 4.

[Embodiments 12 and 13] Further, the second skeleton bucket 20 is not limited to the method of connecting to the first skeleton bucket 10 so as to cover only the bottom surface as shown in FIG. As shown in FIG. 15 and FIG. 16, it may be configured to be connected so as to cover the back surface or the back surface to the bottom surface. The second skeleton bucket 320 shown in FIG. 15 has a shape that matches the curved surface portion of the back surface of the first skeleton bucket 310, and forms a connecting surface with the first skeleton bucket 310. In the bucket of this form, since the second skeleton bucket 320 does not project downward, there is an advantage that the second skeleton bucket 320 does not get in the way during the scooping operation of the crushed material 4 and can be smoothly scooped. The second skeleton bucket 420 shown in FIG. 16 has a shape that matches the curved surface portion of the first skeleton bucket 410 from the back surface to the bottom surface, and forms a connecting surface with the first skeleton bucket 410.

[Sieving Work] The sorting work using the skeleton bucket according to the above embodiment has a flow as shown in FIG. First, as shown in FIG. 17 (a), the crushed material 4 is crushed by the first skeleton bucket 10 by utilizing the arm 5 equipped with the skeleton bucket and the rotation of the bucket.
Scoop up

Then, as shown in FIG. 17B, the arm 5 is shaken for sieving. By this, the first
First opening 1 provided in the skeleton bucket 10 of
Large crushed material 4A that cannot pass 3 remains in the first skeleton bucket 10. Then, of the crushed material that has passed through the first opening 13, a small crushed material 4B that cannot pass through the second opening 23 provided in the second skeleton bucket 20.
Remain in the second skeleton bucket 20. Finally, the second
The finely crushed material 4C and earth and sand smaller than the opening 23 of the above are sieved and fall downward from the skeleton bucket. In this way, the crushed materials are sorted into three sizes, large, small and fine.

First, the smallest crushed material 4C of the smallest size that has fallen downward and accumulated on the ground is collected. Next, FIG.
As shown in (c), the skeleton bucket is rotated toward the front to remove the small crushed material 4B from the second skeleton bucket 2.
Discharge from 0 to the ground. For example, the arm 5 is moved to a position different from the position where the fine crushed material 4C has dropped, and the small crushed material 4B is piled up on the ground so as not to be mixed with the fine crushed material 4C.

Finally, the largest crushed material 4A remaining in the first skeleton bucket 10 is discharged. By rotating the skeleton bucket in the opposite direction, large crushed material 4A
Falls to the ground. As a result, a relatively large-sized crushed material held by the first skeleton bucket 10, a small crushed material 4B that passes through the first skeleton bucket 10 and is held by the second skeleton bucket 20, and It is possible to simultaneously perform three types of sorting, that is, the finely crushed material 4C that passes through the second opening portion 23 of the second skeleton bucket 20 and falls. In addition, the crushed materials respectively selected can be collected without being mixed with each other.

[Embodiment 14] In the embodiment of the present invention,
Although an example is shown in which skeleton buckets having different openings are connected in two stages, it is also possible to connect three or more stages as shown in FIG. In this case, the first located in the first stage
Of the second skeleton bucket 520 of the second tier and the third skeleton bucket 530 of the third tier, and the opening of the skeleton bucket of It is possible to select the crushed material 4 according to the crushed material. In addition, it is desirable that the outer shape of the bucket be larger than that of the bucket connected to the rear stage in order to reliably capture the crushed material 4 falling from the bucket at the front stage. However, if the number of connecting stages of the bucket is too large, the weight of the entire bucket becomes heavier and the arm 5
The load on the connection part and the drive part is increased. Further, since the size of the entire bucket is enlarged, there is a problem that it becomes difficult to scoop and discharge the crushed material 4 with a shovel. Therefore, the skeleton bucket is preferably 3 stages or less, and most preferably 2 stages.

[0050]

As described above, according to the skeleton bucket of the present invention and the sieving method using the skeleton bucket, a feature that a plurality of sorts can be simultaneously performed by one sieving operation is realized. The skeleton bucket of the present invention and the sieving method using the skeleton bucket have a unique configuration in which skeleton buckets having openings of different sizes are connected in multiple stages. This is because sorting according to the size of the parts can be performed at the same time. For example, if the first and second skeleton buckets are connected in two stages,
Three kinds of crushed materials can be sorted by one sorting operation. With this configuration, it is possible to omit the repetitive work of scooping, rocking, and discharging a plurality of times with a plurality of types of skeleton buckets, replacing the skeleton bucket, and performing scooping again. In particular, in the conventional method, if one wants to further sort what has been sorted, he must start again with scooping,
It was an inefficient task. On the other hand, according to the configuration of the present invention, it is not necessary to discharge each time sorting is performed, and the crushed material sorted by the first skeleton bucket is sent to the second skeleton bucket as it is, so that repetitive work is omitted. Therefore, the sorting work can be shortened both in terms of process and time.

Furthermore, according to the skeleton bucket of the present invention and the sieving method using the skeleton bucket, it is not necessary to replace a plurality of types of skeleton buckets having different opening sizes each time sieving is carried out, which is a troublesome skeleton bucket. The replacement work can be omitted. For the work of separating and exchanging the bucket fixed to the tip of the arm etc., the bucket has a movable part with the arm,
Furthermore, it was necessary to connect a drive part such as a hydraulic piston, which was extremely complicated and time-consuming. On the other hand, in the present invention, exchange is performed by using buckets of multiple stages,
It is possible to save the trouble of mounting. In addition, it is not necessary to move the device one by one from the site of the sorting work to replace the bucket. On the other hand, the skeleton bucket can be moved freely at the work site, providing a convenient and convenient environment.

The present invention also has an advantage that the work of connecting buckets can be easily performed. When the bucket is attached to the tip of the arm, it is complicated because there is a rotating part and a driving part. However, in the present invention, the skeleton bucket already connected to the arm or the like has a second skeleton like an attachment. Since it is a method of mounting a bucket, it can be easily attached and detached. Therefore, the time-consuming bucket exchange work can be significantly shortened, and the advantage that the work can be performed easily and quickly can be enjoyed.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an example of a first skeleton bucket according to an embodiment of the present invention.

FIG. 2 is a schematic perspective view showing a second skeleton bucket according to an embodiment of the present invention.

FIG. 3 shows a second skeleton bucket shown in FIG.
FIG. 3 is a schematic perspective view showing a state in which the skeleton bucket is mounted on the skeleton bucket.

FIG. 4 is a plan view showing a bottom surface portion of a skeleton bucket provided with an opening.

FIG. 5 is a plan view showing a bottom surface portion of a skeleton bucket provided with an opening according to another embodiment of the present invention.

6A and 6B are a schematic perspective view and a side view showing a skeleton bucket in which a sliding mechanism is provided at a connecting portion according to a third embodiment of the present invention.

7 is a side view showing a side surface portion of the second skeleton bucket in FIG. 2. FIG.

FIG. 8 is a side view showing a side surface portion of a second skeleton bucket according to still another embodiment of the present invention.

FIG. 9 is a cross-sectional view showing a side surface portion of a skeleton bucket according to still another embodiment of the present invention.

FIG. 10 is a sectional view showing a side surface portion of a second skeleton bucket according to still another embodiment of the present invention.

FIG. 11 is a schematic perspective view showing a second skeleton bucket according to still another embodiment of the present invention.

FIG. 12 is a side view showing a skeleton bucket according to still another embodiment of the present invention.

FIG. 13 is a side view showing a skeleton bucket according to still another embodiment of the present invention.

FIG. 14 is a schematic perspective view of the skeleton bucket shown in FIG.

FIG. 15 is a sectional view showing a side surface portion of a skeleton bucket according to still another embodiment of the present invention.

FIG. 16 is a sectional view showing a side surface portion of a skeleton bucket according to still another embodiment of the present invention.

FIG. 17 is a schematic diagram showing a flow of a sorting operation using the skeleton bucket according to the embodiment of the present invention.

FIG. 18 is a sectional view showing a side surface portion of a skeleton bucket according to still another embodiment of the present invention.

[Explanation of symbols] 1 ... Input port 2 ... Receiving port 3 ... Connection part 4 ... Crushed object 4A ... Large crushed object 4B ... Small crushed object 4C ... Fine crushed object 5 ... Arm 10 ... 1st skeleton bucket 10A ... Skeleton bucket 11 ... 1st side part 12 ... 1st bottom face part 13 ... 1st opening part 18 ...・ Scraping claw 19 ... Lattice frame 20 ... Second skeleton bucket 21 ... Second side surface 22 ... Second bottom surface 23 ... Second opening 24 ... Connection holes 25 ... Rails 26 ... Rollers 110, 210, 310, 410, 510 ... First skeleton buckets 120, 220, 320, 420, 520 ... Second skeleton buckets 530 ...・ Third skeleton bucket

Claims (14)

[Claims] 1. A skeleton bucket having a plurality of openings, wherein a pair of first side surfaces (11) are arranged substantially in parallel and spaced apart from each other, and at least one of the first side surfaces (11) is opened as an input port (1). A first bottom surface portion (12) having a pair of first side surface portions (11) connected in a direction orthogonal to the first side surface portion (11), the first bottom surface portion (12) being the first First skeleton bucket (10) having a plurality of openings (13), second side surface parts (21) arranged in parallel and spaced apart from each other
And a second bottom surface portion (22) having a pair of second side surface portions (21) connected in a direction orthogonal to the second side surface portion (21) so as to open at least one as a receiving port (2). And a second skeleton bucket (20) in which the second bottom surface portion (22) is provided with a plurality of second opening portions (23) larger than the first opening portion (13), A skeleton bucket, wherein a second skeleton bucket (20) is detachably connected to a portion other than the input port (1) of the first skeleton bucket (10). 2. At least one of the first bottom surface portion (12) and the second bottom surface portion (22) has a substantially edge of the first side surface portion (11) or the second side surface portion (21). The skeleton bucket according to claim 1, wherein the skeleton bucket is fixed along the skeleton. 3. The distance between the pair of first side surface portions (11) and the distance between the pair of second side surface portions (21) are substantially the same,
The first skeleton bucket (10) and the second skeleton bucket (20) are connected so that the first flat surface portion and the second side surface portion (21) are substantially in the same plane. The skeleton bucket according to claim 1 or 2. 4. The first skeleton bucket (10) and the second skeleton bucket (20) are connected so that the first skeleton bucket (10) projects in the rake direction. The skeleton bucket according to any one of claims 1 to 3. 5. The skeleton bucket according to claim 1, wherein the second skeleton bucket (20) is fixed to the first skeleton bucket (10). 6. A second skeleton bucket mountable on a first skeleton bucket (10) having a plurality of first openings (13), wherein the second skeleton buckets are arranged substantially parallel and spaced apart from each other. Two side parts (21)
And a second bottom surface portion (22) having a pair of second side surface portions (21) connected in a direction orthogonal to the second side surface portion (21) so as to open at least one as a receiving port (2). And a second bottom surface portion (22) having a plurality of second opening portions (23) larger than the first opening portion (13). 7. The method according to claim 1, wherein the first skeleton bucket (10) and the second skeleton bucket (20) can be slidable with each other at a connecting portion (3). Skeleton bucket described in the crab. 8. The second side surface portion (21) of the second skeleton bucket (20) has a shape projecting in a chevron shape on at least one side thereof. Skeleton bucket. 9. The second side surface portion 21 of the second skeleton bucket (20) has an inverted trapezoidal shape protruding downward,
In the inverted trapezoid, the front side located in the rake direction and the back side located in the opposite direction are inclined, and the first inclination on the front side is
The skeleton bucket according to any one of claims 1 to 8, wherein the skeleton bucket has an acute angle with respect to a side forming the receiving port 2 rather than the second inclination on the back surface side. 10. The second side surface portion 21 of the second skeleton bucket (20) has an angle between the first inclination on the front side and the side forming the receiving port 2 of 15 ° to 60 °. The skeleton bucket according to any one of claims 1 to 9. 11. The second side surface part (21) of the second skeleton bucket (20) has a second slope on the back side for receiving the second slope (2).
The skeleton bucket according to any one of claims 1 to 10, characterized in that an angle formed by the sides constituting the is 45 ° to 80 °. 12. The skeleton bucket according to claim 1, wherein the side surface portion is a flat plate having no opening. 13. The skeleton according to claim 1, wherein the second side surface portion (21) has a plurality of openings similar to the second opening (23). bucket. 14. A skeleton bucket which is connected to the next stage rather than the opening of the first skeleton bucket (10) into which two or more skeleton buckets having a plurality of openings are connected, and which is used to feed the crushed material (4). By making the opening of the skeleton bucket of the next stage smaller than the opening of the skeleton bucket of the previous stage,
A sieving method using a skeleton bucket capable of simultaneously passing a plurality of sieves by one sieving operation by swinging the entire skeleton bucket.