JPH1054028A - Bucket with stirring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently carry out excavation work by means of a bucket and stirring work by means of a stirring machine with one excavator in the case soil improvement is executed. SOLUTION: A bucket with stirring device is equipped with a bucket main body 1. An excavation opening section 2 is provided to the front of the bucket main body 1, and a passing opening section 3 is provided to the rear thereof. Mounting plates 15 and 16 to be mounted to the front end of an arm on an operating machine are erected to an upper plate 14 of the bucket main body 1. Water spraying bodies 6 and 7 are provided to both front and rear of the upper plate 14. A stirring wing device 4 is provided to the inside of the passing opening section 3. The stirring wing device 4 is equipped with a rotary shaft 41, and wing plates 44 and 45 are mounted to the rotary shaft 41 through fixtures. A hydraulic motor 5 for driving the rotary shaft 41 is provided to the upper part of the bucket main body 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bucket with a stirrer which is used by being attached to the tip of an arm of a hydraulic shovel type excavator when ground improvement is performed.

[0002]

2. Description of the Related Art For example, when the foundation of a building is constructed, if the ground is loose, the ground is strengthened, that is, ground improvement is performed. In this ground improvement, the ground is first stirred by a stirrer, and an appropriate amount of water and a modifier such as cement or lime are mixed therein and further stirred to solidify them. Conventionally, when the portion where the ground improvement has to be performed is relatively deep, the work has been performed in the following procedure.

[0003] First, a hydraulic excavator excavator having a bucket attached to the tip of an arm (hereinafter simply referred to as an excavator).
Then, excavate the ground of the construction part to the required depth. Next, a part of the excavated soil is back-filled in a lower layer of the excavated portion using a bucket. With the excavator equipped with a stirrer at the tip of the arm, the backfilled part is stirred and crushed finely, and an appropriate amount of water and a modifier are mixed to improve the ground. Before the ground improvement layer is solidified by using the bucket of the excavator, the upper layer is back-filled with soil, and the ground improvement is performed by using a stirring device in the same manner as described above. Thereafter, the above procedure is repeated as necessary, and almost all of the excavated soil is backfilled to complete the ground improvement work.

[0004]

However, the above-mentioned conventional ground improvement method has the following problems.
That is, as described above, when the portion where the ground improvement is to be performed is relatively deep, the excavator equipped with the bucket and the excavator equipped with the stirring device must be alternately operated.

[0005] When two excavators can be prepared, a pilot and a stirrer may be attached to each of the excavators, and the operator may change over and steer. However, when the construction site is small, the excavators are close to each other, so the pilots may operate. It is not preferable in terms of work efficiency and safety, such as using extra nerves. Further, when only one excavator can be prepared, the bucket and the stirring device must be replaced one by one, which requires a great deal of labor and time, and the working efficiency is remarkably deteriorated.

[0006]

The object of the present invention is to solve the above problems,
When performing ground improvement, especially when the part where the ground improvement must be performed is relatively deep, the excavation work performed using a bucket and the stirring work performed using a stirrer,
It is an object of the present invention to be able to carry out efficiently with one excavator.

[0007]

Means for Achieving the Object Means of the present invention taken to achieve the above object are as follows. The first means is a bucket with a stirrer attached to an arm tip of a hydraulic shovel excavator, wherein the bucket has a bucket body having a digging opening, and the digging opening of the bucket body. Is a bucket provided with a stirring device, comprising: a passage opening provided substantially on the opposite side; a stirring means provided inside the bucket body; and a motor driving the stirring means.

[0008] In the second means, a watering means is provided near the excavation opening and / or the passage opening.
A bucket with a stirrer according to the above means.

The structure of the stirring means is, for example, a structure in which a required number of rods or plates are radially attached to a rotating shaft, but is not limited to this structure. Further, in this structure, the mounting position of each rod or each plate in the circumferential direction of the rotating shaft is shifted by, for example, arranging in a spiral shape.
The load can be prevented from being applied all at once when stirring the ground. Note that the plate itself may be formed into a twisted shape, or a rod or a plate may be formed with a projection.

[0010]

The bucket with the stirring device is attached to the tip of the arm of the excavator. For example, when using as a bucket in ground improvement work as described above, the stirring means is stopped. As a result, the stirring means acts to close the passage opening of the bucket body, so in general work in ground improvement such as excavating soil or moving a place,
It can be used like a normal bucket.

When used as a stirrer in ground improvement, the stirring means is driven by a prime mover. According to this, the soil that has entered from the excavation opening by the excavation operation of the bucket body is agitated by the agitation means and becomes fine, and is discharged out of the bucket body from the passage opening without staying in the bucket body.

[0012] In a device provided with a water spraying means near the excavation opening and / or the passage opening, when the ground is dry and dust is likely to be generated, etc., the water is sprayed to remove dust during work. Generation can be reduced, which is useful for improving the working environment. It can also be used to adjust the water content of the agitated soil at the time of soil improvement.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the embodiments shown in the drawings. FIG. 1 is a perspective view showing an embodiment of a bucket with a stirring device according to the present invention, FIG. 2 is a front view of a part of the bucket with a stirring device shown in FIG. 1, and FIG. FIG. Reference numeral B denotes a bucket with a stirring device, which is provided with a bucket body 1. The bucket body 1 is formed of an iron plate, and includes a bottom plate 11, side plates 12, 13 and an upper plate 14.

The front portions of the side plates 12 and 13 are provided so as to project downward and be inclined. The rear side of the side plates 12, 13 is formed in a substantially semicircular shape. And the bottom plate 11 is the side plate 1
2, 13 are provided from the boundary portion between the lower straight portion and the arc portion at the rear lower portion to the portion slightly protruding from the front lower end portion. The upper plate 14 is provided from the boundary between the straight portion on the rear upper side of the side plates 12 and 13 and the circular arc portion to the front end on the upper front side.

As a result, the bucket body 1 is formed in a substantially rectangular tube shape with one side slightly narrowed. A square excavation opening 2 is provided at the front of the bucket body 1.
At the rear of the bucket body 1, a passage opening 3 is provided.
A base plate 19 is fixed to the upper surface of the upper plate 14.
Attachment plates 15 and 16 are erected on the base plate 19 in parallel at a required distance. Pin mounting tubes 17, 17 and 18, 18 are provided at both upper end portions of the attachment plates 15, 16, respectively.

Further, on the front and rear edges of the upper plate 14,
Watering bodies 6 and 7 as watering means are provided. The water spray bodies 6 and 7 are provided with base pipes 61 and 71, respectively, and the base pipes 61 and 71 have a required number of spray nozzles 62 and 62, respectively.
.. and 72, 72 .. are provided at regular intervals. A water supply pipe (not shown) for supplying water is connected to the base pipes 61 and 71, respectively.

A stirring blade device 4 as stirring means is provided inside the passage opening 3 at the rear of the bucket body 1. The stirring blade device 4 has a rotary shaft 41 rotatably mounted between the side plates 12 and 13. The rotating shaft 4
The position where 1 is pivotally supported is the center point of the semicircular portion at the rear of the side plates 12 and 13. On the rotating shaft 41, a required number of attachments 42, 43 made of two plate members, which are respectively arranged at required intervals, are fixed alternately and substantially over the entire length so as to be oriented at right angles to each other.

At the end portions on both sides of each of the attachments 42 and 43,
The rectangular plate-like blades 44 and 45 are fixed to the fixing bolts 40 and 4.
It is fixed by 0 ... The blades 44, 45 are fixed by inserting fixing bolts 40, 40... Into bolt holes (not shown) provided in the blades 44, 45 so that they do not come off by centrifugal force. . Thus, the blade plates 44 and 45 are provided alternately at 90-degree intervals in the circumferential direction, and the rotation trajectory of the tip of the blade plates 44 and 45 is the edge of the semicircular portion at the rear of the bucket body 1. It is set not to protrude.

One end of the rotating shaft 41 penetrates one of the side plates 12 and is rotatably supported, and protrudes toward the outer surface of the side plate 12.
A sprocket 46 is attached to the shaft end. A hydraulic motor 5 as a prime mover is provided at a front portion of the upper plate 14 on the side plate 12 side. The front side of the hydraulic motor 5 is L
It is protected by a protection plate 52 in the shape of a letter. A sprocket 51 is attached to the end of the rotary shaft of the hydraulic motor 5. A chain C is wound between the sprockets 51 and 46. 47 is a chain cover.

(Operation) FIG. 4 is an explanatory view showing a state in which the upper layer of the ground is excavated using the bucket with the stirring device according to the present invention as a bucket, and FIG. 5 shows the bucket with the stirring device according to the present invention. FIG. 6 is an explanatory view showing a state in which the lower layer of the ground is being used as a stirrer, and FIG. 6 shows a state in which the bucket with the stirrer according to the present invention is used as a bucket and a stirrer, and the upper layer of the ground is backfilled and stirred. FIG. The operation of the present embodiment will be described with reference to FIGS.

First, the bucket B with the stirring device is connected to the excavator 8.
To the distal end of the arm 81 via attachment plates 15 and 16. When the ground 9 is used as a bucket for excavating the ground 9 in, for example, ground improvement work, the stirring device 4 is stopped. Thereby, the stirring device 4
Acts to close the passage opening 3 of the bucket body 1, so that it can be used in almost the same manner as a normal bucket in general work in ground improvement such as excavating soil or moving a place. .

When used as a stirrer in ground improvement, the stirrer 4 is driven by a hydraulic motor 5. According to this, the soil that has entered from the excavation opening 2 by the excavation operation of the bucket body 1 is agitated by the rotating blades 44 and 45 of the agitating device 4, and becomes finer, and does not stay in the bucket body 1. From the bucket body 1. Thus, the soil on the ground 9 can be agitated.

If the portion where the ground improvement is to be performed is relatively deep, as described in the section of the prior art, the following operation is performed. An excavator 8 having a bucket B with a stirrer attached to the tip of the arm 81 excavates the ground 9 to be constructed to a required depth (see FIG. 4). A part of the excavated soil is back-filled in the lower layer 91 of the excavated portion using the bucket B with a stirring device (see FIG. 5).

The stirrer 4 is driven, and the lower layer 91 portion backfilled by the stirrer-equipped bucket B is stirred and finely crushed, and an appropriate amount of water and an improving agent are mixed to improve the ground (see FIG. 5). The stirrer 4 is stopped, and before the ground-improved lower layer 91 is solidified, the soil is buried in the upper part thereof, and the ground improvement of the upper layer 92 is performed using the stirrer as described above (see FIG. 6). Thereafter, the above procedure is repeated, and almost all of the excavated soil is backfilled to complete the ground improvement work.

As described above, the bucket B with a stirrer attached to the excavator 8 can be used alone as a bucket or as a stirrer. Therefore, in the ground improvement work, usually only one excavator 8 is required, and even when the construction site is narrow, it is not necessary to use extra nerves such as preventing the arm 81 of the adjacent excavator 8 from contacting. Easy to work.

In addition, when the ground 9 is dry and dust is likely to be generated by the water spray body 6 provided near the excavation opening 2 and the passage opening 3, water is sprinkled to reduce the generation of dust during work. Work environment can be improved. It can also be used to adjust the water content of the agitated soil at the time of soil improvement. The present invention is not limited to the illustrated embodiment, and various modifications can be made within the scope of the claims.

[0027]

The present invention has the above configuration and has the following effects. (A) A bucket with a stirrer is attached to the tip of an arm of an excavator. For example, when the bucket is used as a bucket in ground improvement work, the stirrer is stopped. As a result, the agitating means acts to close the passage opening of the bucket body, so that in a general work in ground improvement such as excavating soil or moving a place, the stirring means can be used in the same manner as a normal bucket. it can. When used as a stirrer in ground improvement, the stirrer is driven by a prime mover. According to this, the soil that has entered from the excavation opening by the excavation operation of the bucket body is agitated by the agitation means and becomes fine, and is discharged out of the bucket body from the passage opening without staying in the bucket body. in this way,
The bucket with the stirrer attached to the excavator can be used alone as a bucket or as a stirrer. Therefore, in the ground improvement work, usually only one excavator is required, and even when the construction site is narrow, it is not necessary to use extra nerves such as preventing the arms of the adjacent excavator from coming into contact. It's easy to do.

(B) In the case where a watering means is provided in the vicinity of the excavation opening and / or the passage opening, when the ground is dry and dust is likely to be generated, etc. The generation of dust can be reduced, which is useful for improving the working environment. It is also convenient because it can be used to adjust the water content of the agitated soil at the time of soil improvement.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a bucket with a stirring device according to the present invention.

FIG. 2 is a front view of a part of the bucket with a stirring device shown in FIG.

FIG. 3 is a sectional view taken along the line II in FIG. 2;

FIG. 4 is an explanatory view showing a state in which the bucket with the stirring device according to the present invention is used as a bucket and the upper layer of the ground is excavated.

FIG. 5 is an explanatory diagram showing a state in which a bucket with a stirrer according to the present invention is used as a stirrer to stir a lower layer of the ground.

FIG. 6 is an explanatory view showing a state in which the bucket with the stirrer according to the present invention is used as a bucket and a stirrer, and the upper layer of the ground is backfilled and stirred.

[Explanation of symbols]

 B Bucket with stirrer 1 Bucket body 11 Bottom plate 12, 13 Side plate 14 Upper plate 15, 16 Attachment plate 17, 18 Pin mounting tube 19 Base plate 2 Excavation opening 3 Passing opening 4 Stirring blade device 41 Rotating shaft 42, 43 Attachment 44, 45 Blade plate 40 Fixing bolt 46 Sprocket 47 Chain case 5 Hydraulic motor 51 Sprocket 52 Protective plate C chain 6, 7 Sprinkler 61, 71 Base pipe 62, 72 Injection nozzle

Claims (2)

[Claims] 1. A bucket with a stirrer attached to the tip of an arm of a hydraulic shovel excavator, wherein the bucket has a bucket body having a digging opening, and the bucket body having a digging opening. A bucket provided with a stirrer, comprising: a passage opening provided on the opposite side of the bucket body; a stirring means provided inside the bucket body; and a motor driving the stirring means. 2. The bucket with a stirring device according to claim 1, further comprising a watering means near the excavation opening and / or the passage opening.