JPH05346026A - Bucket structure of back hoe - Google Patents

Abstract

PURPOSE:To improve efficiency of soil quality improvement work by providing a soil quality improvement material supply port in a bucket body so that soil quality improvement material can be supplied into the bucket body from a soil quality improvement material supply device through the supply port. CONSTITUTION:A tip of an improvement material supply pipe 14 whose basic end is connected with a soil quality improvement material supply device is connected to a soil quality improvement supply port provided in a bucket body. When soft ground is digged by the bucket, soil quality improvement material is supplied into the bucket body via the soil quality improvement material supply device, the improvement material supply pipe 14, the soil quality improvement material supply port, a stirring claw support shaft 20, and a soil quality improvement material discharge port 25. Digged soil is stirred by stirring claws provided on the stirring claw support shafts 18 to 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bucket structure of a backhoe used for ground / soil improvement work such as soft ground.

[0002]

2. Description of the Related Art Conventionally, as one of means for improving soil / soil such as soft ground, a soil improving material has been sprayed on the surface of soft ground in advance, and the soft ground is excavated by a bucket of a backhoe. The work of improving the soil quality was performed by discharging the excavated soil, excavating it again, and mixing the soil such as soft ground and the soil improvement material.

[0003]

However, in the soil improvement work described above, it is necessary to spray the soil improvement material on the surface of soft ground in advance, which requires time and labor. There was a problem that the soil improvement work was inefficient.

In addition, in the work of applying the soil quality improving material, the amount of spraying the soil quality improving material may be evenly distributed, or the amount of the soil quality improving material may be increased or decreased depending on the location such as soft ground. The adjustment is troublesome and difficult, and from this point also there is a problem that the soil improvement work is inefficient.

[0005]

Therefore, in the present invention, a soil improvement agent supply port is provided in the bucket body, and the soil improvement agent can be supplied into the bucket body from the soil improvement agent supply device through the soil improvement agent supply port. It is intended to provide a backhoe bucket structure characterized by the above.

The present invention is also characterized by the following configurations.

A stirring device for stirring the excavated soil is provided in the bucket body.

In the stirring device, a stirring claw support shaft is mounted between the left and right side walls of the bucket body, a large number of stirring claws are provided on the peripheral wall of the support shaft, and the hydraulic pressure from the machine is supplied to the bucket body. A hydraulic motor driven by is provided, and the hydraulic motor and the stirring claw support shaft are interlockingly connected via a transmission mechanism.

[0009] The stirring pawl support shaft is a hollow pipe, the soil improvement material discharge port is provided on the peripheral wall of the stirring pawl support shaft, and one end opening of the stirring pawl support shaft is provided in the bucket body Connected to.

[0010]

When performing soil improvement work on soft ground, the other end of the improvement material supply pipe whose one end is connected to the soil improvement material supply device is connected to the soil improvement material supply port provided in the bucket body in advance. ..

Then, the soil improvement agent is supplied from the soil improvement agent supply device into the bucket body through the soil improvement agent supply port, the soil improvement agent is mixed into the excavated soil, and the soil is discharged from the bucket body and excavated again. Thus, soil such as soft ground and the soil improvement material can be reliably mixed.

At this time, since the soil improvement agent can be supplied from the soil improvement agent supply device into the bucket body through the soil improvement agent supply port, the efficiency of soil improvement operation can be improved and the soil improvement agent A certain amount or a required amount of soil improvement material can be supplied to the excavated soil excavated once, and the soil can be improved to a desired state.

Further, by providing a stirring device for stirring the excavated soil in the bucket body, the excavated soil and the soil conditioner can be mixed quickly and reliably,
Soil improvement work can be performed more efficiently.

At this time, in the stirring device, the stirring claw support shaft having a large number of stirring claws protruding from the peripheral wall is mounted between the left and right side walls of the bucket body, and the stirring claw support shaft is provided in the bucket body. It is possible to reliably mix the excavated soil and the soil improvement material by rotationally driving the hydraulic motor driven by the supply of the pressure oil from the machine.

Furthermore, the stirring claw support shaft has a hollow pipe shape,
While the soil improvement material discharge port is provided on the peripheral wall of the support shaft, and one end opening of the stirring claw support shaft is connected to the soil improvement material supply port provided on the bucket body, while stirring the excavated soil with the stirring claw. The soil quality improving material can be uniformly and efficiently mixed into the excavated soil by discharging the soil quality improving material from the soil quality improving material discharge port, and the soil quality can be surely improved.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1A shows a bucket 1 according to the present invention.
B is a soil improving agent supply device that supplies the soil improving material to the bucket 1 by compressing air, C is an air compressor that supplies compressed air to the supplying device B, and D is , E is a generator that supplies electricity to the air compressor C, and E is a soil improvement material input silo that inputs the soil improvement material into the soil improvement material supply device.

Here, the soil improvement material is a material generally used for soil improvement or ground improvement of soft ground such as cement or lime.

As shown in FIG. 1, the backhoe A has a swivel base 3 mounted on a crawler type traveling unit 2, and an operating unit 4 and a prime mover unit 5 provided on the swivel base 3 and the swivel base 3 The base end of the main boom 6 is attached to the front end of the sub-boom 7, the sub-boom 7 is attached to the tip of the main boom 6, and the bucket 1 according to the present invention is attached to the tip of the sub-boom 7.

Further, reference numerals 8, 9 and 10 respectively denote hydraulic cylinders, which are expanded and contracted by pressure oil supplied from a hydraulic tank provided in the prime mover section 5 to rotate the main and auxiliary booms 6 and 7 and the bucket 1. I am allowed to do it. 11 is a bucket mounting bracket.

In the above-mentioned structure, the gist of the present invention lies in the structure of the bucket 1, which will be described below with reference to FIGS.

That is, as shown in FIGS. 1 to 4, the bucket 1 is provided with a soil quality improving material supply port 13 on the left side wall 12a of the bucket body 12, and the base end of the bucket 1 is connected to the soil quality improving material supply device. A stirrer 15 for stirring the excavated soil in the bucket body 12 by connecting the tip of the improvement material supply pipe 14 connected to B
Is provided. 16,17 are excavating blades.

The stirrer 15 is provided on the left and right side walls of the bucket body 12.
Three stirring claw support shafts 18, 19, 20 are mounted between 12a, 12b, and a large number of stirring claws 21 project on the peripheral wall of each support shaft 18, 19, 20 and at the base side of the bucket body 12. The hydraulic motor 22 is installed in
The drive shaft 23 of the hydraulic motor 22 is projected outward from the right side wall 12b, and the drive shaft 23 and the right end of the stirring claw support shaft 18 adjacent to the hydraulic motor 22 are projected outward from the right side wall 12b. The passive shaft 18a thus formed is interlockingly connected via the transmission mechanism 24, while the interlocking shafts 18b, 19a formed by projecting the left ends of the three stirring claw support shafts 18, 19, 20 outward from the left side wall. , 20a are interlockingly connected via an interlocking mechanism 25.

The three stirring claw support shafts 18, 19, 20 are hollow pipe-shaped, and the left and right side walls 12a, 12a of the bucket main body 12 are formed so that each shaft core forms a triangular vertex in a side view.
As shown in FIG. 2, a longitudinally extending soil-improving material discharge port 26 is provided on the peripheral wall of one of the stirring claw support shafts 20b, and the stirring claw support shafts are also installed between them. The open end of the interlocking shaft 20a located at the left end of 20 is used as the soil improvement material supply port 13.

The transmission mechanism 24 is constructed by winding a drive chain 29 between a drive sprocket 27 attached to the drive shaft 23 and a passive sprocket 28 attached to the passive shaft 18a. 30 is a transmission case.

The interlocking mechanism 25 is constructed by winding an interlocking chain 34 between the interlocking sprockets 31, 32, 33 attached to the interlocking shafts 18b, 19a, 20a. 34 is an interlocking case.

In FIG. 2 to FIG. 4, 35 is a motor case.

The embodiment of the present invention is constructed as described above, and according to this embodiment, the following operational effects are produced.

That is, when performing soil improvement work on soft ground or the like, the soil improvement agent supply port 13 provided in the bucket main body 12 in advance is connected to the soil improvement agent supply device B by connecting the improvement agent supply pipe 14 with the base end thereof. Connect the tip.

When excavating the soft ground with the bucket 1, the soil conditioner is supplied from the soil conditioner supplying device B → the conditioner supplying pipe 14 → the soil conditioner supplying port 13 → the stirring claw support shaft 20.
→ Soil improvement agent discharge port 26 → While supplying into the bucket body 12 and stirring the excavated soil with the stirring claws 21 in the bucket body 12, the soil improvement agent can be quickly and evenly distributed in the excavated soil.
In addition, the soil quality can be improved by reliably mixing.

Therefore, the excavation work is performed only once,
Since the soil improvement material can be surely mixed in the excavated soil and it is not necessary to excavate the same place many times, the soil improvement work can be efficiently performed.

Further, in this embodiment, one stirring claw support shaft 20 is used.
Although the soil quality improving material discharge port 26 is provided in the above, the soil quality improving material discharge port is also provided in the other two stirring claw support shafts 18 and 19, and the soil quality improving material discharge port of these stirring support shafts 18 and 19 is also used. It is also possible to discharge the soil conditioner.

The soil-improving material is not limited to powder, but liquid or slurry material can be used.

[0034]

According to the present invention, the following effects can be obtained.

Since the soil improvement agent can be supplied into the bucket body, it is possible to save the labor of spraying the soil improvement agent on the surface of soft ground or the like, and to efficiently perform the soil improvement operation. it can.

Since the soil improvement material is supplied into the bucket body, a predetermined mixing ratio of the excavated soil excavated by the bucket and the soil improvement material can be secured, and the soil improvement effect can be secured. it can.

Since the excavated soil can be agitated by the agitating device provided in the bucket body, the excavated soil and the soil-improving material can be mixed quickly and reliably, and the soil-improving work efficiency is improved. be able to.

The stirring claw spindle, which constitutes a part of the stirring device, has a hollow pipe shape, and the soil-improving material discharge port is provided on the peripheral wall.
The soil improving agent can be discharged from the soil improving agent discharge port by connecting the one end opening of the stirring shaft and the soil improving agent supply port. The soil improving material can be uniformly and efficiently mixed therein with stirring, and the soil quality can be surely improved.

[Brief description of drawings]

FIG. 1 is an explanatory view of a usage state of a backhoe including a bucket structure according to the present invention.

FIG. 2 is a front view of a bucket.

FIG. 3 is a cross-sectional left side view of the bucket.

FIG. 4 is a cross-sectional right side explanatory view of the bucket.

[Explanation of symbols]

 A backhoe B soil improvement material supply device C air compressor D generator E soil improvement material input silo 1 bucket 13 improvement material supply port 14 improvement material supply pipe 15 stirring device 16 excavating blade 17 excavating blade 18 stirring claw spindle 21 stirring claw

Claims (4)

[Claims] 1. A bucket of a backhoe, wherein the soil improvement agent supply port is provided in the bucket body, and the soil improvement agent can be supplied into the bucket body from the soil improvement agent supply device through the soil improvement agent supply port. Construction. 2. The backhoe bucket structure according to claim 1, wherein a stirring device for stirring the excavated soil is provided in the bucket body. 3. The stirring device comprises a stirring claw support shaft mounted between the left and right side walls of the bucket body, and a plurality of stirring claws projectingly provided on the peripheral wall of the support shaft. 3. The bucket structure for a backhoe according to claim 2, wherein a hydraulic motor driven by the supply of the hydraulic power is provided, and the hydraulic motor and the stirring claw support shaft are interlockingly connected via a transmission mechanism. 4. A soil-improving material in which the stirring-claw support shaft is formed in a hollow pipe shape, a soil-improving material discharge port is provided on a peripheral wall of the stirring-claw support shaft, and one end opening of the stirring-claw support shaft is provided in a bucket body. The backhoe bucket structure according to claim 3, wherein the bucket structure is connected to a supply port.