JPS59165725A - Soil improver - Google Patents

Abstract

PURPOSE:To easily harden soil by uniformly mixing a soil improving agent with soil by a method in which plural arms of a presser part are advanced between both side plates of an excavating tool and plural intermediate plates and the excavating tool and the presser part are closely driven in mutually faced manner. CONSTITUTION:An excavating tool of a latticed frame form is made up by connecting two side plates 14 with plural window holes 20 and plural intermediate plates 15 provided between the side plates 14 by connectors 17. Blades 22 are fixed to the tips of the side plates 14 and the intermediate plates 15, and stirring bars 21 with projected both ends are provided to the side plates 14 and the intermediate plates 15. Plural arms 23 with plural stirring bars 21a whose both ends are projected are formed in parallel on the presser part 7. The excavating tool 6 and the presser part 7 are set at the tip end of the arm 4 in mutually faced manner and closely driven on a face-to-face basis. The excavating tool 6 rakes up soil and the presser part 7 presses the soil, whereby sufficiently uniformly mixing the soil.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to a soil improvement plate used to improve soft soil into hard ground, and more specifically, it relates to a soil improvement plate that provides a crosstalk effect to the tip of the arm of a power shovel. This invention relates to a soil improvement board to which a digging tool and a pressing member are attached.

Conventional technology Usually, when carrying out civil engineering work, construction work, etc., the construction site is constructed by reclaiming land with soft soil, poor soil that does not easily become hard over a long period of time, ponds, swamps, etc. Conventionally, in order to improve the soil quality, concrete blocks were added to the soft ground using factory waste, loose stones, earth and sand, etc., and the ground was hardened using a roller machine. A hardening agent such as citric acid, cement, or lime was spread, and an iron plate was attached to the end of the power shovel's arm, and the agitating action of this would cause cross-wire hardening.

However, with these conventional methods, it takes a lot of time and effort to level the ground, and even when using a power shovel, the iron plates etc. have great resistance to the kneading operation, making it difficult to mix, resulting in damage to cross-wire members, machine failure, etc. However, no improvement in crosstalk efficiency could be expected.

Object of the Invention A digging tool for performing raking work and a pressing member for pressing are attached to the tip of the arm of a power shovel, and both the digging tool and the pressing member are used to remove soft soil. Efficient mixing with soil conditioners such as cement and lime, easy soil leveling by excavation following the soil improvement by mixing with cement, etc.; This means that there will be no accidental damage or failure of the pressing member, etc.

20 Structure of the Invention One side plate L1411141 having a plurality of window holes,
The above two side plates (l(1)Middle h of multiple sheets arranged in H direction)
1 plate (16) and a plurality of connecting members (17) constitute a grid-like frame, each side plate (140141 and middle b) plate 0
A digging tool (6) in which the tip Q upper blade body (3) of 5) is fixed, and a plurality of stirring rods @υ are provided on each side plate side p4+ and the intermediate plate (+6) with both ends protruding. , a pressing member (7) formed in parallel with a plurality of arms for holding a plurality of stirring rods (21a) having the same protrusion at both ends, and a power shovel.
A pressing member (7) is installed oppositely at the tip of the arm (4) of the arm (4), and a pressing member (7) is provided between the both side plates (141 (141) and the plurality of intermediate plates (15) of the above-mentioned excavation (6). A plurality of arms (supports) are advanced to drive both of them in close proximity to each other.

E. Embodiment In FIGS. 1 and 2, (1) is the excavator main body, +21 is a zoom pivotably mounted on the excavator main body t+uc hydraulic cylinder (3), and (4) is the boom ( (2) is rotatably pivoted at the tip of the arm (4) and raised and lowered by a hydraulic cylinder (15); It is a raising tool. Reference numeral (7) denotes a pressing member for pressing action, which is attached to the vicinity of the tip of the arm (4), facing the digging tool (6).

A part of the bracket (8) provided at the base of the digging tool (6) is pivotally attached to the tip of the arm (4) by a rotating shaft (9), and a part of the bracket (8) is further pivoted to the tip of the arm (4) by a rotating shaft II6. The link HK connected to the tip of the piston rod (117) of the hydraulic cylinder QO is connected to the piston rod of the hydraulic cylinder (QO). (11).Also, a part of the base of the excavator (6) may be directly used as a bracket.Because of the above structure, the rod of the hydraulic cylinder (10) (one protrudes and one retracts). By performing the input motion, the tip of the arm (4) can perform a raking motion as shown by the two-dot chain line in FIG. 2.

As shown in Figures 3 and 7, the digging tools (6) are arranged at equal intervals as shown in the figure or at arbitrary intervals between the two side plates and the above two sides & (14I Q41). For example, two medium N plates θ~ are connected at the base, tip, and middle part with plate or rod-shaped connecting members 1) 08 + 09) to form a frame body, which is curved inwardly. It is configured in a silver type with an open top and bottom. In the first example, the proximal end of the intermediate plate (+15) (15) is shown as a bracket (8). In addition, a plurality of window holes, such as 7 or 2 as shown in the figure, are provided in each of the above-mentioned side plates (141041). Also, in FIG. As shown, a plurality of short stirring rods (2J) are installed through the rods with both ends protruding.In this case, the plurality of stirring rods (21) are arranged in a dispersed manner, and the two sides of the stirring rods (2J) and the intermediate plate (+5105 ), and a plurality of blade bodies (22) are removably or fixedly attached to the tips of both sides & (+41 (14) and middle 115) via connecting members 08), respectively. Install it.

In addition, the stirring rod @]) and the rod-shaped connecting member θη on the middle surface are made of steel with particularly excellent wear resistance, and both side plates (141N
In addition to making the bottom ring in contact with the ground roughly straight over the entire length, it also has a sawtooth shape.

On the other hand, as shown in FIGS. 2 and 7, the pressing member (7) is made up of a plurality of arms (231 arranged in parallel) which are curved in a substantially dogleg shape to be stronger than the arcuate curve of the excavator (6). Then, assemble the digging tool (6) on a small piece of dirt, and insert several short and wear-resistant stirring rods (21a) into each arm (□□□) with both ends protruding. Install. In addition, the number of arms is less than the value on both sides of the excavation and the total number of intermediate plates.
1 and intermediate &a6) A pressing member (7) is mounted on the digging tool (6) so as to face the intermediate portion of the same.

In other words, (24) is fixed to the lower surface near the tip of the arm between the rotating shaft (9) of (6) and the pivot point S (to) of link Q3), and (7) is fixed to the lower surface of arm (4). A digging tool attached to the tip (
For 6), dig each arm (C) in parallel with the hoe shape in the same direction, and make the arm face the intermediate part between the numbers on both sides (I4iα4) of (6) and each arm 〇5). (4).

The above-mentioned pressing f$ material (7) is a rotatable digging material (6)
On the other hand, it should be made rotatable, or fixed at a predetermined position, or the position of the fc should be able to be moved arbitrarily.

What is shown in Fig. 2 is an example in which the pressing member (7) is made freely movable. Attach the tip of the rond body blade of this hydraulic cylinder (c) to the back of the pressing member (7), and press the rond (
2'7) rotates the pressing member (7). This allows the digging tool (6) to be connected to the hydraulic cylinder (
10, and the pressing member (7) is driven by the hydraulic cylinder (26) to rotate each of them, the excavating tool (6) and the pressing member (7) (!: When they are close to each other, they are dug out as shown by the two-dot chain line in Figure 2, and both sides of the plates (l-
Each arm (23) of the pressing member (7) is inserted between the pressing member (7) and the intermediate plate (+5) together with the rond (21 &) integrated therewith.

FIG. Operation switching valve, glance/
is the operation lever for switching the above-mentioned main operation switching valve (branch), and this m-operation bar (3tij i') is installed in the operator's cab of the excavator body (1+). (31a) (
31b) is an electromagnetic switching valve for operating both hydraulic cylinders (10 and 261), and this switching valve (3: ha
) and (3:Lb) are configured to be simultaneously switched to the same position by operating a push button switch C4 provided in the driver's cab of the power shovel main body 11). Also,
The switching valve (31&) is connected to the base end of the hydraulic cylinder (101 and (26)), and the other switching valve (31b) is connected to the tip of the hydraulic cylinder (101 and (26), respectively. (3)
3) is a relief valve, and (1) is a check valve.

As described above, the hydraulic cylinder (101) installed on the hydraulic circuit
The immediate operation of the excavator (6) and the pressing member (7) according to (26) is as follows.

First, the operation lever (30) is operated to switch the main operation switching valve 9) from the neutral position to the cross position. Then, oil flows into the cylinder from the base end of the hydraulic cylinder (10) through the switching valve (3), a), and the rond (11) advances.
The digging tool (6) rotates counterclockwise about the rotating shaft (9) as a fulcrum. Then, press the seed button switch and pull the changeover valves (31a) and (31b) to the 14. - When simultaneously switched to the diagonal line position, the supply of oil to the hydraulic cylinders (10, 1) is stopped, the digging tool (6) is held in a constant position, and at the same time, oil is supplied to the switching valve (31). /b) flows from the base end of the hydraulic cylinder (c) into the p cylinder, the above-mentioned rond (27) advances, and the pressing member (7) clockwise pivots around the pivot point shi4; direction, that is, toward the digging tool (6).Thereafter, when the push button switch 4 is released, the respective selector valves (31a) and (31b) simultaneously change from the diagonal line position to the straight line position. As a result, the oil supply to the hydraulic cylinder cutting 6) is cut off, and at the same time, oil flows into the cylinder from the base end of the hydraulic cylinder (lO5) via the switching valve (31a), and The locking tool (6) further rotates counterclockwise.Then, since the hydraulic cylinder (26)K is connected to the relief valve 3), the pressure is moved in and out by the action of the relief valve. , the pressing member (7) rotates counterclockwise around the pivot point (2 (1)).Then, operate; The two oils that are changed to the parallel position through the hydraulic cylinder α are transferred to the hydraulic cylinder α through the switching valve (31b')
0.・Flows into the cylinder from the tip side of ・Rondo (1
1) retracts and the excavator (6) rotates clockwise around the rotating shaft (9). As described above, the excavator and the pressing member are rotated at the appropriate time by the hydraulic cylinder on the hydraulic circuit.
The plant is stopped and the soft soil is improved.

Next, the operating procedure for soil improvement using the digging tool and pressing member driven by the hydraulic cylinder will be explained as follows.

First, the soil quality should be improved by adding cement to the surface of the soft ground.
Spread a layer of soil conditioner such as lime. Next, kneading work is carried out in the following manner using a power shovel +11 equipped with a digging tool (6) and a pressing member (7). That is, before driving, Figure 1 &! Hydraulic cylinders (3) (5) as shown in the lines
) by protruding and retracting the rods of the arm (21 inch
erect the arm (4) and dig it up (6) as shown in Fig. 2/dotted chain line, and press the pressing member (7) against the rod (27) of the hydraulic cylinder (26).
Retract and align the arm (4). In this state, the arm (21 [4jl) is laid down and the excavator (6) at the tip of the arm (4) is brought close to the ground.Then, the operation lever (30
) to operate the main operation switching valve 9) and the switching valve (31a).
and excavation by operating the hydraulic sill (10) (6)
Rotate counterclockwise. Since the ground is soft, the digging tool (6) smoothly penetrates into the ground from its blade area without receiving much resistance and scrapes into the soil on which the soil conditioner is being applied. Next, press the pushbutton switch 134 to turn off the hydraulic cylinder Ht.
Stop the oil supply to o7 and stop the digging shell (6).

At the same time, hydraulic cylinder brake 6. - The pressing member (7) rotates in the four directions because it operates. Pressing member (7)
enters the soft soil and rotates toward the digging tool (6). Then, the pressure on the pushbutton switch is released to stop the pressing member (7). Then, at the same time, the digger (6
) rotates counterclockwise again. Accordingly, as shown in the two-dotted line in Fig. 2, the excavator (6) and the pressing member (7) are close to each other, and each arm of the pressing member (7) is The both side plates (14) of the ingredient (6) are wedged between the round and middle plate (15). At the same time, the relief valve (33) is connected
The hydraulic cylinder (26) that is positive is activated, and the
As the force retracts, the pressing member (7) rotates counterclockwise, but due to the continued rotation of the digging odor (6), the close engagement with it is maintained.

The digging tool (6) is moved by the soil scraping operation of the digging tool (6) due to the opposing close movements of the digging soldier (6) and the pressing member (7), and the pressing action of the pressing member (7). 6) and the longitudinal side plates of the pressing member (7), the intermediate plate, the dispersed and laterally protruding stirring rods, and the rod-shaped connecting members can easily perform a sufficient stirring action, and these stirring members 5 Because it is a round rod, stirring is carried out with almost no resistance, and the soil is sufficiently kneaded and the soil conditioner is evenly mixed into the soft soil to make it hard.

In addition, both sides of the excavated plate (6) (141N is in the window hole))
Since the soil was crossed, the window hole (20)
Due to the silver mold with a gap, the work is carried out smoothly by properly discharging the excavator and pressing member vertically and horizontally. Furthermore, during this mixing, in addition to the operation of the excavator and the pushing member, the main body of the power shovel is turned from side to side, so that the mixing operation extends not only to the front and back but also to the right of the tile, further increasing the mixing effect.

When the kneading is completed in this manner, the control lever (30) is operated to move the main operation switching valve -j from the neutral position to the parallel position. ；IU is cold. This adds hydraulic shillings (10
Since the rod (Il) of . is retracted, the excavator (6) rotates clockwise, and the excavator (6) is separated from the pressing member (7), and the excavator (6) is separated from the pressing member (7). 6) and the cross-contact soil held or attached to the pressing material (7) will fall.

As described above, the excavator (6) and the pressing member (7) are driven within the rotation range of the power shovel body (1), and the soil conditioner is spread at appropriate times to improve the width and depth of the soft soil. Mixing is performed over the entire range of soil, and when the turning gate of the power shovel body is finished, it is moved to repeat mixing of the unimproved soil.

Note that during this excavation, cross-track completion soil force 1 depth direction excavation and cross-track work 5 may become hazy. In such a case, both sides of the excavation plate (6) UN and multiple intermediate plates (1
An iron plate or the like is attached to the bottom of these 5 tons to form a packet, and the soil from which the crosstalk is completed is scooped out and temporarily left somewhere else. When the improvement of the soft soil is completely completed as described above, the digging tool (6) is moved to both sides α4) [4
) so that the straight or tooth-shaped bottom of the excavator comes into contact with the surface of the improved soil.
Move the ground to level the ground.

In the case of the above-mentioned medical example, the pressing member (7) is in a state in which the round stroke η of its hydraulic cylinder (26) does not expand or contract, that is, when the vE exchange valve (31a031-o) in the hydraulic circuit is connected to the hydraulic cylinder (26). Shut down the circuit and make a pressing sound iST;J'
(7'H5--It may be made to stand still and only the digging tool (6) is rotated.

Fig. 5 shows another example in which the pressing member (7) is fixed at a predetermined position. It sticks to the tip.

In addition, even if the predetermined position of the pressing part I7) is changed, the soil can be reliably and easily kneaded by this pressing part side (7) and the rotatable rising tool (6). 1, this fixation of the pressed HA material (7) in the kneeling position is easily accomplished by using a hydraulic cylinder (26i), and by using the rond (35;) as a hydraulic cylinder.

Effect of 6 shots to J A digging tool that acts on the tip of the arm of the power shovel body and a pressing member that acts as a suppressor are pivoted facing each other, and the digging tool and the pressing member are pivoted to face each other. are both vertically complex! #
The excavator arm and a plurality of stirring rods with both ends protruding from each arm are used to respond to a hoe with an open top and bottom, and holes are made in both sides of the plates from which the stirring rods of the excavator are protruded. The force is rotatable, and the pressing member is rotatable or fixed at a predetermined position, or the fixed position can be moved arbitrarily so that the digging tool and the pushing member can be moved freely during operation. The members are arranged to face each other in close proximity to each other, and when the two arms approach each other, the two arms are inserted between the respective arms, so that the blade at the tip of the excavator penetrates into the ground and excavates. When the lifting member and the pressing member are placed facing each other in close proximity, the digging tool scrapes up the soil, and the pressing member acts to press the scraped up material against the digging tool. The soil is sufficiently stirred by the numerous ronds and protrudes through the holes in the sides of the digging tool. Therefore, when the soil is soft, the soil conditioner such as lime and cement is evenly mixed into the soil, and the soil is easily hardened. In addition, since the main parts that perform the stirring action are a large number of round stirring rods, the kneading operation is carried out smoothly with little resistance, and during excavation, there is almost no damage to the pressing member or malfunction of the power shovel body. .

In addition, the digging tool and the pressing member can both be rotated by a hydraulic cylinder on the hydraulic circuit, or the digging tool can be rotated and the pressing member is fixed at a predetermined position. Alternatively, this predetermined position can be easily displaced by hydraulic sill drive, so that the structure is simple and the operation is easy.

In addition, by making the bottom of both sides of the excavation plate line-shaped or serrated, this bottom can be grounded and the power shovel can be rotated to level the ground after soil improvement at the bottom. It is easy to carry out, and it is convenient because it can be used as a packet by attaching an iron plate or the like to the entire bottom of the digging tool.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view of a power shovel equipped with the present invention, and Fig. 2 shows a state in which an excavator and a pressing member, which are the main parts of the structure according to the present invention, are equipped on the arm of the power shovel. A side view, FIGS. 3 and 7 are an assembled plan view and a side view of the digging tool and pressing member, FIG. 5 is a perspective view of the seven intermediate plates used for digging, and FIG. FIG. 2 is an explanatory diagram showing an example of a hydraulic circuit that drives the soil conditioner according to the present invention. (1)...Power shovel body, (4+...Power shovel arm, (6)...Digting odor, (7)...Pushing member, (+4)...Both side plates of digging tool, a (to)-・Intermediate plate of digging tool, <17) (18) (19) #-
Connecting member of excavator, (20)...window holes on both sides, si 1
)... Stirring rod for digging, (21a)... Stirring rod for pressing member, (2... Blade body, (support)) + 1. Arm for pressing member.

Claims (1)

[Claims] fi+ Two side plates having a plurality of window holes, a plurality of intermediate plates arranged between the two side plates, and a number of connecting members constitute a lattice-like frame, and each side plate and A digging tool with a blade fixed to the tip of the intermediate plate and slow-release stirring rods with both ends protruding from each side plate and the intermediate plate, and a plurality of digging tools having a plurality of stirring rods with double protrusions as well. A plurality of pressing members each having parallel arms formed in parallel are mounted facing each other at the tip of the arm of the power shovel, and a plurality of pressing members are mounted on a cylinder of both side plates and a plurality of intermediate plates of the above-mentioned excavator. A soil improvement machine characterized in that the arms of the two are moved in and the two arms are driven in close proximity to each other.