JP2002004329A - Raw-material soil charger for soil improvement machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a raw-material soil hopper in which operating efficiency is improved. SOLUTION: A roll crusher for crushing a large mass is installed to the lower section of the raw-material soil hopper for the soil improvement machine, and a means for scraping off raw-material soil adhering on the crusher is mounted.

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 provided with 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.

FIG. 6 is an enlarged detailed view of a raw soil hopper 54 of the self-propelled soil improvement machine. The raw material 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. A lattice-shaped or net-shaped sieve 63 is provided substantially parallel to the upper side surface 54c at the inner boundary between the opening 54a and the guide portion 54b. Raw material soil hopper 5
4, a spill prevention plate 64 is provided at the front end.
A soil and sand discharge assisting device 65 formed in a cylindrical shape near the supply port of the raw material soil and having a projection on the surface is provided. Outside the sediment discharge assisting device 65 (on the right side), the sediment quantitative supply device 6
6. A shooter 67 for the additive hopper 55 is 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 lumps such as large rocks and gravel are sieved by the sieve 6.
3 rolls down from behind to the outside of the car
Small-sized raw material soil that has passed through the first conveyor 5
6 is loaded. Only a certain amount of the raw material soil loaded on the first conveyor 56 is conveyed toward the entrance of the mixer 57 (to the right) by the earth and sand discharge auxiliary device 65 and the earth and sand quantitative supply device 66. The additive is added to the raw material soil from the shooter 67 on the way.

In the above-mentioned conventional apparatus 1, there is a problem that large lumps of large size roll out of the vehicle from the rear and are scattered, which hinders the work. Further, after the work, it is necessary to clean up the large lumps. And so on.

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. 6, 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 this opening communicates downward, and faces an over-conveyor 74 that carries out large blocks of large rocks and the like outside the vehicle.

The conventional device 2 functions as follows with the above configuration. Large (approximately 10 cm or more) of the raw soil input to the raw soil hopper 70 by a hydraulic shovel or the like
Rocks and the like slide and roll down on the roll screen 71 and are dropped to a certain place on the ground by the over-conveyor 74. The small-sized raw material soil (small gravels, earth and sand, etc.) that has passed through the roll screen 71 is guided by the guide unit 72, loaded on the first conveyor 56, conveyed, and thrown into the inlet of the mixer 57. On the other hand, an additive such as a solidifying agent is simultaneously injected into the charging port from the shooter of the additive hopper 55. 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. Furthermore, large lumps such as large rocks move on the roll screen 71 and are carried out by an over-conveyor. There was a problem.

[0010]

As described above, in the conventional apparatuses 1 and 2, a large lump is carried out of the vehicle,
Since it is not used for backfilling, it is necessary to separately process these large lumps, and there is a problem that the working efficiency is remarkably deteriorated in the case of raw material soil having many large lumps.
The present invention has been made under the above background,
It is an object of the present invention to provide a device that can use large lumps as improved soil suitable for backfilling.

[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 roll crusher for breaking up large lumps is provided below the raw material soil hopper of the soil conditioner. According to the present invention, the large lumps are reused as backfill soil, so that the work efficiency is improved.

A second aspect of the present invention is characterized in that, in the first aspect of the present invention, a separating means for separating the raw material soil attached to the roll crusher is provided. ADVANTAGE OF THE INVENTION According to this invention, when using the raw material soil in which the large lump and earth and sand are mixed, the adhering earth and sand etc. can be removed and the fall of crushing efficiency can be prevented.

[0013]

FIG. 1 shows an embodiment of the present invention.
Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same functional parts as those of the conventional device (particularly FIG. 7) are denoted by the same reference numerals, and the detailed description is omitted. In FIG.
A rear wall of the opening portion 11 of the raw material soil hopper 10 is also provided, so that the inputted large lumps also fall downward. A guide 12 is provided below the opening 11, and a roll crusher 13 is provided above the guide 12. Roll crusher 13 is approximately 1
It is designed to break large lumps of 0 cm or more and fall down as small pieces. Further, there is provided a separating means for separating soil and the like adhered to the roll crusher 13.

FIGS. 2 to 4 are views showing the roll crusher 13 and the peeling means. FIG. 2B is a plan view, and FIG.
(A) is a cross-sectional view as seen from arrow XX, and FIG.
It is the figure seen from Y. In FIGS. 3 and 4, when the four crusher rolls 13a to 13d crash, they are rotated by a drive motor (not shown) in the direction indicated by solid arrows in the drawings. A foreign object is sandwiched between the crusher rolls 13a to 13d, and is controlled by a control means (not shown) so as to rotate in the opposite direction indicated by a dotted arrow and discharge the foreign object when a rotation torque of a predetermined value or more is applied.

Further, a scraping plate 15 for peeling off earth and sand adhering to the left side of the crusher roll 13a at the left end and the right side of the crusher roll 13d at the right end can be attached to and detached from a frame 14 provided on the guide 13 by screws or the like. It is fixed to. Central crusher rolls 13b, 13
A scraping plate 16 is provided below each of the c.
As shown in FIG. 4, the scraping plate 16 is fixed to a mounting member 17 by welding or the like, and the mounting member 17 is fixed to a U-shaped channel 18 so as to be detachable and replaceable with a screw or the like. In addition, low protrusions 19 for preventing abrasion of the roll body are provided in recesses of the crusher rolls 13a to 13d.
Is provided.

In FIG. 1, the above-mentioned raw material soil hopper 10
The first side for transferring the raw material soil to the inlet of the mixer 57
A conveyor is provided. In addition, a shooter of the additive hopper 55 is provided at the charging port. A second conveyor 6 for unloading the improved soil is provided below the mixer.
0 is provided.

The present embodiment is configured as described above and functions as follows. That is, the large lumps (large lumps of 10 cm or more) charged into the raw soil hopper 10 are crushed by the roll crusher 13 into small lumps, and loaded on the first belt conveyor 56 together with the earth and sand and other small raw soil. Is conveyed to the inlet of the mixer 57. Further, the raw material soil is mixed with soil with high moisture content or soil with high viscosity (for example, asphalt fragments), and these are mixed with the roll crusher 13.
Even when a large amount adheres to the rolls, these adhered substances are peeled off by the scrapers 15 and 16, fall on the first belt conveyor, and are conveyed to the input port of the mixer 57.

When the raw material soil is introduced into the mixer 57, additives are introduced from the shooter of the additive hopper 55, and these are further crushed and mixed in the mixer 57 to improve the soil quality. The soil is carried out of the machine to the second belt conveyor 60. In the present embodiment, a large lump is also used as the improved soil, so that the effect of improving work efficiency is obtained. In addition, the large lumps are excluded from being processed together with the other raw material soil, so that there is an effect that an operation of separately processing the large lumps discharged outside the machine becomes unnecessary. It can be applied to a wide range of raw material soil because it can process raw material soil containing large lumps and earth and sand. At that time, the crushing efficiency of large lumps is not reduced by the soil.

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.

[0020]

As described above, according to the structure of the present invention, in the first aspect of the present invention, large lumps mixed in the raw soil can be reused as backfill soil, so that the utilization efficiency is improved. In addition, since the operation of separately processing the large lump can be omitted, the effect that the operation efficiency is improved can be obtained. Also,
According to the second aspect of the present invention, since the earth and sand and the like are prevented from adhering to the crusher roll, an effect is obtained that a reduction in crushing efficiency and therefore a reduction in work efficiency can be prevented.

[Brief description of the drawings]

FIG. 1 is a diagram showing an entire embodiment of the present invention.

FIGS. 2A and 2B are a plan view and a sectional view of a roll crusher.

FIG. 3 shows a side view of the roll crusher.

FIG. 4 shows a scraping plate used for a roll crusher.

FIG. 5 shows a conventional improved earthen machine.

FIG. 6 shows a raw material soil hopper of a conventional apparatus.

FIG. 7 shows another conventional raw soil hopper.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Raw material soil hopper 11 Opening 12 Guide part 13 Roll crusher 13a-13d Crusher roll 15 Scratch plate 16 Scratch plate 55 Additive hopper 56 Transport conveyor 57 Mixer

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[Procedure amendment]

[Submission date] June 28, 2000 (2006.2.
8)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

Claims (3)

[Claims] An apparatus for feeding material for a soil conditioner, wherein a roll crusher for breaking up large lumps is provided below the material soil hopper of the soil conditioner. 2. The apparatus according to claim 1, further comprising a peeling means for peeling off the raw soil adhering to the roll crusher.
A material soil input device for a soil improvement machine according to item 1. (3)