JPH11157657A - Powder/granular material carrier device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To carry a power/granular material continuously by making carrying quantity constant without producing an arching of source earth in a source earth hopper. SOLUTION: A source earth hopper 8 is provided on an upper position of a source earth carrier device 7, a rotor is provided to the side of a discharge port 34 in this source earth hopper 8 and it is made possible to carry source earth by making carrying height constant. It is devised not to produce an arching of source earth along the source earth carrier device 7 and a carrier side wall 32 by making height of source earth pressed on the carrier side wall 32 of the source earth hopper 8 smaller than half of height to the top part of a cylindrical body 40 of the rotor from the source earth carrier device 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for conveying powdery material in a hopper used as an apparatus for conveying a fixed amount of raw soil in a raw soil hopper of a self-propelled soil improvement machine.

[0002]

2. Description of the Related Art As a device for transporting a fixed amount of raw soil in a raw soil hopper of a self-propelled soil improvement machine, for example, Japanese Patent Application No. Hei.
The device described in 22053 has been proposed. In this apparatus, as shown in FIG. 9, a raw material soil hopper 101 is provided at a position above a conveyor 100, and a rotor 103 is provided at a discharge port 102 of the raw material soil hopper 101.
03 is rotated in the same direction as the conveyor 100, so that the height T of the raw material soil conveyed from the discharge port 102 is constant, so that the conveyance amount is constant.

[0003]

When the operation of transporting the raw material soil was performed continuously using the above-described apparatus, as shown in FIG. 8, the operation was carried out over the conveyor 100 and the transport side wall 104 of the raw material hopper 101. In some cases, a bridge 106 of the raw material soil 105 was generated, and a certain amount of the raw material soil could not be transported.

[0004] Therefore, an object of the present invention is to provide a powdery and granular material conveying device capable of solving the above-mentioned problems.

[0005]

Means for Solving the Problems and Functions and Effects The present inventors have conducted intensive studies and experiments to find out the cause of the above-mentioned bridging of the raw material soil. Specifically, the raw material soil 105 in the raw material soil hopper 101 is conveyed by the conveyor 100 toward the discharge port 102, and the raw material soil near the discharge port 102 is
The height T (that is, the cutting height) of the raw material soil which is transported while being scraped by the projections 103a of 03 and transported by the cylindrical portion 103b of the rotor 103 is constant.

[0006] Because of this, the raw material soil hopper 101
The raw material soil therein is pressed against the transfer side wall 104 with a force of W × M. Here, W is the weight of the raw soil, and M is the coefficient of friction between the raw soil and the conveyor 100. It has been found that the raw material soil is compacted between the conveyor 100 and the transport side wall 104 by this pressing force, and that the consolidated raw material soil is not broken down by the rotor 103 to form a bridge 106.

The inventors of the present invention have conducted intensive studies and experiments focusing on the above, and found that the height of the transfer side wall against which the raw material soil is pressed is smaller than half the distance from the upper surface of the conveyor to the uppermost portion of the cylindrical portion of the rotor. It was found that no bridging occurred, and the present invention was met.

According to a first aspect of the present invention, there is provided a conveyor, a hopper disposed above the conveyor and having a discharge port, and a cylindrical body 40 provided near the discharge port in the hopper so as to be rotatable in the same direction as the conveyor. 1 provided with a plurality of projections 41 on the rotor 1
8 and the transfer height of the granular material in the hopper is
8, the height of the portion of the hopper transporting side wall 32 against which the granular material is pressed is smaller than half the height from the conveyor to the uppermost portion of the cylindrical body 40 of the rotor 18. This is a granular material conveying device characterized by the following.

According to the first aspect of the present invention, since no bridging of the granular material occurs between the conveyor and the transport side wall 32 of the hopper, the granular material in the hopper is continuously formed at a constant height from the discharge port 34. Since the transfer can be performed, the discharge can be continuously performed with the discharge amount of the granular material in the hopper kept constant.

The second aspect of the present invention relates to a powdery / granular material transfer device provided with a baffle plate 50 for preventing powdery particles from entering a gap 51 between the transfer side wall 32 of the hopper and the loader 18 according to the first invention. is there.

According to the second invention, the transfer side wall 3 of the hopper is provided.
The granular material in the hopper does not enter the gap 51 between the rotor 2 and the rotor 18, and the granular material does not drop onto the granular material transported at a constant height by the rotor 18.

[0012] Thus, it is possible to continuously transport the granular material in the hopper as a more accurate transport amount, and it is possible to prevent the granular material from being clogged at the discharge port 34 and become unable to be transported. The rotation resistance of the rotor 18 does not increase.

A third aspect of the present invention relates to a mixer 3 provided at an intermediate portion in the front-rear direction of a vehicle body 1 of a self-propelled vehicle, a raw material conveying device 7 provided near a front portion of the vehicle body 1, and a rear portion of the vehicle body 1. The driving device 4 provided in the vicinity, the raw material soil hopper 8 provided in the position above the raw material soil transfer device 7, and the raw material soil in the raw material soil hopper 8 provided in the vicinity of the discharge port 34 in the raw material soil hopper 8 are provided. A rotor 18 for conveying the material at a constant height, and an improving material supply device 9 for supplying an improving material onto the material soil conveyed to the fixed height are provided. In the self-propelled soil improvement machine for disintegrating, mixing and agitating the raw material soil and the improvement material and discharging the soil as the soil improvement soil, the height of the height from the raw material soil transfer device 7 to the top of the cylindrical body 40 of the rotor 18 is increased. The material soil on the transport side wall 32 of the material soil hopper 8 is pressed more than half. It is a self-propelled soil improvement machine, characterized in that to reduce the height of the portion.

According to the third aspect of the present invention, the material soil in the material soil hopper 8 is continuously conveyed at a constant conveyance amount, and after the material is dropped and supplied thereon, the material soil and the material are mixed. The mixture is crushed, mixed and stirred by the machine 3 and discharged as soil improvement soil.

[0015] As a result, the excavated soil such as earth and sand can be reused as backfill soil as a soil of good quality as an improved soil of good quality, and the material soil and the improved material can be crushed, mixed and stirred at a fixed ratio, so that it is always stable. It can be a good quality improved soil.

Further, since the mixing machine 3, the driving device 4, the raw material soil conveying device 7, the raw material soil hopper 8, and the improving material supply device 9 are provided in the vehicle body 1 in a well-balanced and compact manner in the front-rear direction, the whole becomes compact. Because it can run stably, it can be easily and stably moved even in a narrow work site.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (Overall structure of self-propelled soil improvement machine)
As shown in FIGS. 1 and 2, a left and right lower traveling body 2 is attached to a vehicle body 1 to form a self-propelled vehicle. A mixer 3 is attached to the front and rear intermediate portion of the vehicle body 1. A driving device 4 such as an engine, a hydraulic pump, and an operation valve is mounted near the rear of the vehicle body 1, and the driving device 4 is covered with a cover 5.

A mounting frame 6 is provided near the front of the vehicle body 1.
The raw material soil transport device 7 is mounted on the mounting frame 6 in the front-rear direction. A raw material soil hopper 8 is located near the front of the mounting frame 6, and an improving material supply device 9 is mounted near the rear of the mounting frame 6 above the raw material transporting device 7.

At the lower part of the vehicle body 1, an improved soil transport device 10 is provided.
Is attached to the front and rear direction. One side (forward) of the improved soil transport device 10 in the transport direction is located below the mixer 3, and the other side (rearward) of the improved soil transport device 10 in the transport direction is behind the vehicle body 1. It is protruding.

As shown in FIG. 3, the mixer 3 includes a soil cutter 12 and a plurality of impact hammers 1 in a case 11.
3 is provided. The raw material soil conveying device 7 is a conveyor in which an endless belt 16 is wound around a driving wheel 14 and a driven wheel 15. The discharge end of the raw material soil transfer device 7 projects into the case 11 from an inlet 17 formed in the side wall 11 a of the case 11 of the mixer 3.

A rotor 18 is provided near the discharge opening of the raw soil hopper 8, and the cutout height b of the raw soil a is fixed. The cutout height b is the height of the raw material soil a transported by the raw material soil transport device 7 toward the improving material supply device 9.

The improving material supply device 9 includes an improving material hopper 19.
Is provided at the bottom of the container, and the fixed-quantity supply mechanism 2 is provided.
The discharge side of 0 is guided by the chute 21 to the upper surface of the endless strip 16 of the raw material soil transfer device 7. As the improving material, cement, cement-based solidifying agent, quicklime, slaked lime, lime-based solidifying agent, foamed beads, and the like are used.

(Operation of Self-propelled Soil Improving Machine) As shown in FIG. 3, the raw soil a such as excavated earth and sand introduced into the raw soil hopper 8 is cut at a predetermined cutting height by the raw soil transport device 7 and the rotor 18. The improvement material is transported to the improvement material supply device 9 and the improvement material is dropped and supplied onto the raw material soil a.

The raw soil a and the improving material conveyed into the case 11 of the mixer 3 are cut off by the soil cutter 12, and are crushed and mixed by the impact hammer 13 to improve the soil quality of the raw soil a. c is the outlet 2 of the case 11
2 is dropped onto the improved soil transport device 10 and transported to the rear of the vehicle by the improved soil transport device 10.

In order to supply the improving material to the improving material hopper 19, as shown by the phantom line in FIG.
Is lifted, the lid 24 is opened and put into the improvement material hopper 19, the lower part of the bag 23 is broken, and the bag 23 is lifted to be supplied. The crane 25 that lifts the bag 23 is
It is pivotally mounted on one side of the left and right.

Next, the specific structures of the raw soil hopper 8 and the rotor 18 will be described. As shown in FIGS. 4, 5, and 6, the raw material soil hopper 8 includes left and right vertical walls 30, a front vertical wall 31, and a transport side wall 32.
(Rear vertical wall), which has a rectangular shape with a flat shape,
3 faces the upper surface of the endless strip 16 of the raw material soil transfer device 7. The endless band 16 is a rubber belt in which a plurality of cores are embedded in an endless rubber band at intervals in the longitudinal direction, an iron chain or a belt in which a plurality of iron plates are connected endlessly.

The left and right vertical walls 30 have a vertical lower part 30a and a diagonal upper part 30b, and have a substantially U-shape.
The lower part is narrower, and gradually becomes wider toward the upper part.

The transfer side wall 32 is substantially vertical and has a discharge port 34 at a lower portion. A rising plate 35 is attached to the transfer side wall 32 so that earth and sand can be loaded into the raw material hopper 8 by a loading machine. In order to prevent the earth and sand from colliding with the improving material supply device 9 and the like.

The rotor 18 has a plurality of projections 4
7 are provided radially and spaced apart in the axial direction, and as shown in FIG.
Are rotatably supported by a bracket 43 fixed to one vertical wall 30 and a bracket 4 fixed to the other vertical wall 30.
4 is provided with a motor 45, and a reduction gear 4 provided on its output side.
6 is fixed to the cylinder 40.

The height from the endless strip 16 to the cylinder 40 of the rotor 18 is H ₁ , and the height of the endless strip 16 to the transport side wall 3 is H ₁ .
Assuming that H _{2 is} the height up to the upper end surface of D 2 and D is the outer diameter of the cylindrical body 40, the height H _{3 of the} transfer side wall 32 against which the raw material soil is pressed.
Becomes (H ₂ −H ₁ −D), and H ₃ <1/2 (H ₁ +
In D), there as D> _{H 1.}

That is, as shown in FIG. 8, when the raw soil a enters the raw soil hopper 8 up to the upper end of the transport side wall 32, the height (H ₁ ) from the endless band 16 to the top of the cylindrical body 40 is increased. +
Portion raw soil of the transfer side wall 32 is pressed than half of D) the height H ₃ is smaller. By doing so, a bridge does not occur between the raw material soil and the endless strip 16 and the transport side wall 32.

[0032] The rising plate 35, i.e. Yes to the upper part of the conveyor side wall 32 attached baffles 50, the maximum outer diameter D ₀ of the baffle plate 50 projects into the raw soil hopper 8 rotor 18
It is opposed to this portion with a slight gap, so that the raw material soil does not enter the gap 51 between the rotor 18 and the transport side wall 32.

As a result, the raw material soil in the raw material soil hopper 8 does not fall on the raw material soil regulated to a fixed height by the cylindrical body 40 of the rotor 18, and the transport amount can be more accurately adjusted to a fixed amount. In addition, it is possible to prevent a large amount of raw material soil from dropping onto the conveyed raw material soil and clogging at the discharge port 34 to make it impossible to discharge.

In the above embodiment, the apparatus for transferring a fixed amount of the raw soil in the raw soil hopper 8 of the self-propelled soil improvement machine has been described, but the apparatus for transporting lime, cement, etc. in the hopper by a conveyor or the like is described. Of course, it can be applied. In other words, any device may be used as long as the device transports a certain amount of the powdery material in the hopper using the conveyor and the rotor.

[Brief description of the drawings]

FIG. 1 is a side view of a self-propelled soil improvement machine.

FIG. 2 is a plan view of the self-propelled soil improvement machine.

FIG. 3 is an explanatory diagram of soil improvement operation of the self-propelled soil improvement machine.

FIG. 4 is a detailed vertical sectional view of a raw soil hopper portion.

FIG. 5 is a plan view of FIG. 4;

FIG. 6 is a front view of FIG. 4;

FIG. 7 is a longitudinal sectional view of a rotor mounting portion.

FIG. 8 is an explanatory view of the operation of transporting the raw material soil.

FIG. 9 is a longitudinal sectional view of a conventional raw material soil discharging device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Vehicle body 2 ... Lower traveling body 3 ... Mixer 4 ... Driving device 7 ... Raw material soil transport device 8 ... Raw material soil hopper 9 ... Improved material supply device 10 ... Improved soil transport device 11 ... Case 12 ... Soil cutter 13 ... Impact hammer 16 ... Endless belt-like body 17 ... Inlet 18 ... Rotor 19 ... Improvement material hopper 20 ... Quantitative supply mechanism 21 ... Chute 23 ... Bag 25 ... Crane 30 ... Vertical wall 31 ... Front vertical wall 32 ... Transport side wall 34 ... Discharge port 35 ... Rise Plate 40 ... Cylindrical body 41 ... Projection 42 ... Support shaft 43 ... Bracket 44 ... Bracket 45 ... Motor 46 ... Reduction gear 50 ... Baffle plate 51 ... Gap 100 ... Conveyor 101 ... Raw material soil hopper 102 ... Discharge port 103 ... Rotor 104 ... Transport Side wall 106 ... Bridge

Claims (3)

[Claims] 1. A conveyer, a hopper disposed above the conveyor and having a discharge port (34), and a cylindrical body provided rotatably in the same direction as the conveyor near the discharge port (34) in the hopper. 40) a rotor (18) provided with a plurality of projections (41), wherein the rotor (18) regulates the transport height of the granular material in the hopper. ), Wherein the height of a portion of the hopper on which the granular material is pressed on the transport side wall (32) is smaller than half the height of the cylindrical body (40) up to the uppermost part. 2. The powder according to claim 1, wherein a baffle plate (50) is provided for preventing powder particles from entering a gap (51) between the transport side wall (32) of the hopper and the rotor (18). Granule transport device. 3. A mixer (3) provided at an intermediate portion in the longitudinal direction of a vehicle body (1) of a self-propelled vehicle; a raw material soil transfer device (7) provided near a front portion of the vehicle body (1); A driving device (4) provided near the rear of the vehicle body (1), a raw material soil hopper (8) provided above the raw material soil transport device (7), and a discharge port in the raw material soil hopper (8) (34) A rotor (18) which is provided near and conveys the raw soil in the raw soil hopper (8) at a constant height, and an improving material for supplying the improving material onto the raw soil transferred to the constant height Self-propelled soil provided with a supply device (9), which supplies the raw material soil supplied with the improved material to the mixer (3), crushes, mixes and agitates the raw material soil and the improved material, and discharges it as soil improved soil. In the improved machine, a half of the height from the raw material soil transfer device (7) to the uppermost portion of the cylindrical body (40) of the rotor (18) is provided. Self-propelled soil improvement machine, characterized in that the raw soil material has reduced the height of the pressed portion in the conveying side wall (32) of the raw soil material hopper (8).