JP2002001218A - Raw material soil charging apparatus of soil property improving machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a raw material soil hopper of a soil property improving machine which improves the efficiency of treatment work. SOLUTION: A bar screen is installed in a raw material soil hopper, one end side in the front-rear direction of the bar screen is fixed, and the opposite side is made to be a free end, and a vibrator for vibrating the bar screen is installed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a raw material injection device for a soil improvement machine.

[0002]

2. Description of the Related Art A soil improvement machine is constructed by adding an additive such as a solidifying agent so that excavated residual soil and defective soil having a large amount of moisture can be reused as backfill soil on site. This is a machine that improves efficiency. Conventional soil improvement machines are equipped with a soil improvement system consisting of a plurality of devices. For example, Japanese Unexamined Patent Application Publication No. 11-217821
FIG. 5 shows a self-propelled soil improvement machine disclosed in Japanese Patent Application Laid-Open No. H11-157,199. Hereinafter, it is referred to as a conventional device 1. The necessary parts of the conventional apparatus 1 will be described with reference to FIG.

In FIG. 5, a raw material soil hopper 54 and an additive hopper 55 are disposed from the left side on a vehicle body 53 having a crawler type traveling body 52, and a first belt conveyor 56 for conveying the raw material soil is provided below them. Is provided. The first belt conveyor 56 rotates in the direction of the arrow in the drawing, and the input port of the mixer 57 is provided at the right end thereof. Cutters 58 and 59 are provided inside the mixer 57, thereby crushing the raw soil and mixing with additives to improve the soil quality of the raw soil. Below the mixing machine 57, a second belt conveyor 60 for carrying the improved soil out of the machine is provided. Further, a machine room 61 for accommodating an engine, a hydraulic pump and the like is provided at a right end, and an operation room 62 provided with various operation levers is provided on the left side thereof.

FIG. 6 is an enlarged detailed view of a raw soil hopper 54 of the self-propelled soil improvement machine. The raw soil hopper 54 includes an opening 54a and a guide 54b, and the upper side surface 54c is configured to be inclined downward toward the rear. The rear side of the opening 54a is open, and a large lump or the like is formed so as to be able to fall to the ground. Opening 54a
A grid-like or net-like sieve 63 is provided substantially parallel to the upper side surface 54c on the inner boundary of the guide portion 54b. A soil spill prevention plate 64 is provided at the front end of the raw soil hopper 54, and a soil and sand discharge auxiliary device 65 formed in a cylindrical shape near a raw material supply port and having a projection on the surface is provided. Outside the sediment discharge auxiliary device 65 (right side), a sediment quantitative supply device 66 and an additive hopper shooter 67 are provided.

[0005] The conventional device 1 functions as follows with the above configuration. That is, when the raw soil is introduced from above the raw soil hopper 54, large blocks of large rocks, gravel, etc., are rolled down from behind by the sieve 63 toward the outside of the vehicle,
The small-sized raw material soil that has passed through 3 falls and is loaded on the first conveyor 56. The raw material soil loaded on the first conveyor 56 is supplied with a sediment discharge auxiliary device 65 and a sediment quantitative supply device 66.
Only a certain amount is conveyed toward the entrance of the mixer 57 (to the right). In addition, the shooter 67
Is added to the raw material soil.

The conventional apparatus 1 has a problem that large-sized rocks and the like roll off the vehicle from behind and are scattered, which hinders the work. Further, after the work, it is necessary to clean up the rocks and the like. There were problems such as becoming. Further, the discriminating operation using a sieve is slow, and the raw material hopper must be enlarged in order to increase the operation efficiency.

FIG. 7 shows another conventional apparatus (hereinafter referred to as conventional apparatus 2) which solves the above-mentioned problem. Hereinafter, the conventional device 2 will be described. The same functional portions as those of the conventional device 1 are denoted by the same reference numerals, and the description is partially omitted. In FIG. 7, a roll screen 71 is detachably provided on the lower surface of the raw material soil hopper 70. A guide portion 72 is provided below the roll screen 71, and the first conveyor 56 is provided below the guide portion 72. An opening is provided at the rear (left end) of the raw soil hopper 70, and an over-conveyor 74 is provided below the opening to carry out large blocks of large rocks and the like to the outside of the vehicle.

The conventional device 2 functions as follows with the above configuration. Raw material hopper 70 by hydraulic excavator
A large lump of rock (about 10 cm or more) out of the raw material soil fed into the rolls slides on the roll screen 71, falls down, and is dropped by the over-conveyor 74 to a certain place on the ground. The small raw material soil (small rubble, earth and sand, etc.) that has passed through the roll screen 71
2, loaded on the first conveyor 56, conveyed, and put into the inlet of the mixer 57. On the other hand, an additive such as a solidifying agent is added to this input port.
From the shooter at the same time. The input raw material soil is crushed by the cutter 58 and mixed with the additive by the twin-screw rotor 59.

In the above conventional apparatus 2, the roll screen 71
Rocks or the like (approximately 10 cm) having the same size as the gap between the rolls may be bitten between the rolls.

[0010]

As described above, in the conventional apparatus 1, since the large lumps are dropped from the sieve to the outside of the vehicle, the dropped large lumps are scattered, and the work site is made messy. At the same time, there was a problem that the sorting work after the work became difficult. In the conventional apparatus 2, there is a possibility that a large lump is caught in the roll screen and the operation must be interrupted, which is a problem. The present invention has been made in view of the above background, and has as its object to provide a device which prevents deterioration of the efficiency of processing operations and provides an improved apparatus.

[0011]

The present invention employs the following means to solve the above-mentioned problems. That is, claim 1
The described invention is characterized in that a bar screen is provided below the raw material soil hopper.

According to a second aspect of the present invention, in the first aspect of the present invention, one end of the bar screen in the front-rear direction is fixed, the other end is a free end, and a vibrating device for vibrating the bar screen is provided. It is characterized by that.

According to a third aspect of the present invention, in the first or second aspect of the invention, the bar screen is divided into a plurality of pieces in the front-rear direction and arranged in a stepwise manner, and the divided bar screens are fixed. The end and the free end are arranged so as to overlap.

[0014]

FIG. 1 shows the overall configuration of an embodiment of the present invention, FIG. 2 shows a plan view of this embodiment as viewed from above, FIG. 3 shows a cross-sectional view as viewed from XX, FIG. 4 shows a side view. Hereinafter, embodiments of the present invention will be described with reference to these drawings. The same functional units as those of the conventional device (particularly, FIG. 7) are denoted by the same reference numerals, and detailed description thereof will be omitted. In FIG. 1, a bar screen 11 is provided at the boundary between the lower side of the raw material soil hopper 70 and the guide portion 72.

The bar screen 11 is divided into three bar screens 12 to 14 in the front-rear direction, as shown in FIGS. The bar screens 12 to 14 are disposed so that the rear end side is lowered, and one end side (right end side).
Is fixed, the other end is freely opened, the open end of the bar screen 12 overlaps with the fixed end of the bar screen 13,
Similarly, the open end of the bar screen 12 is the bar screen 1
3 is configured to overlap with the fixed end. A fixed beam (I-type steel) 15 to which the bar screens 12 to 14 are fixed is also provided.
17 are fixed to a vibration frame 19 provided on the side wall 18 of the raw material hopper 70.

Further, a vibration transmitting member 20 for transmitting vibration to the vibration frame 19 is fixed via a flange 21. A vibration source 22 is provided at one end of the vibration transmission member 20. The vibration of the vibration source 22 is a vertical vibration or a front and rear rotational vibration, and is preferably a vibration that moves the raw material soil placed on the bar screens 12 to 14 backward (to the left). On the other hand, a vibration damping device 23 for buffering vibration
Is provided between the vibration frame 19 and the frame 24 provided on the soil conditioner main body to prevent transmission of vibration to the soil conditioner.

This embodiment has the configuration described above,
It works as follows. That is, when the raw soil is put into the raw soil hopper 70, the raw soil is deposited on the bar screen 11. Since the bar screens 12 to 14 are vibrated by the vibration source 22, the raw material soil deposited on the bar screen 12 is quickly separated into large lumps and fine raw material soil,
The fine raw material soil (raw material soil that can pass through the bar screen) falls through the bar screen 12 to the guide portion 72 and is deposited on the first conveyor 56. On the other hand, the large lump slides (or rolls) down the bar screen 12 and
It moves to 3 and 14 and is carried out of the machine by the over-conveyor 74.

The vibration source 22 is a large lump of raw material soil which is selected and vibrated at a frequency at which it is easy to drop. This vibration is transmitted to the vibration transmitting member 20 and further transmitted through the vibration frame 19 to the fixed beams 15 to 17. Transmitted to the bar screen 15-1
6 is being vibrated. On the other hand, vibrations are
And transmitted to the main body side frame 24, but the effect of vibration on the main body side is small.

In the present embodiment, the raw material soil is separated into large lumps and fine raw material soil by the configuration and function described above, and
Since the discharge of a large lump outside the machine can be promptly processed, the effect that the processing speed can be improved or the volume can be reduced can be obtained.

The embodiments and examples of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to the examples, and changes in design and the like may be made without departing from the gist of the present invention. Even if there is, it is included in the present invention. For example, bar screens are not limited to three levels,
It may be two stages, or may not be divided. further,
The vibration may act directly on the fixed beam. Further, the installation position of the bar screen is not limited to the above-described boundary portion, but may be a lower portion (including a lower portion) of the raw material hopper.

[0021]

As described above, according to the constitution of the present invention, the raw soil is separated into large lumps and fine raw soil, and
Since the discharge of a large lump outside the machine can be promptly processed, the effect that the processing speed can be improved or the volume can be reduced can be obtained.

[Brief description of the drawings]

FIG. 1 shows an overall configuration of an embodiment of the present invention.

FIG. 2 shows a plan view of the present embodiment as viewed from above.

FIG. 3 is a sectional view taken along line XX of FIG. 2;

FIG. 4 shows a side view of the present embodiment.

FIG. 5 shows an example of a conventional soil improvement machine.

FIG. 6 shows a conventional raw material soil hopper.

FIG. 7 shows another conventional raw soil hopper.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Bar screen 12-14 Bar screen 15-17 Fixed beam 20 Vibration transmission member 22 Vibration source 23 Vibration damping device 70 Raw material soil hopper 74 Over conveyor

Claims (3)

[Claims] 1. A material soil input device for a soil improvement machine, wherein a bar screen is provided below a material soil hopper. 2. The soil improvement machine according to claim 1, wherein one end of the bar screen in the front-rear direction is fixed, and the other end is a free end, and a vibrating device for vibrating the bar screen is provided. Raw material injection equipment. 3. The bar screen according to claim 1, wherein the bar screen is divided into a plurality of pieces in the front-rear direction and arranged in a step-like manner, and the fixed end and the free end of the divided bar screen are arranged so as to overlap. Or the raw material soil input device of the soil improvement machine according to claim 2.