JP2876525B2 - Soft ground consolidation equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a consolidation device for soft ground using a consolidation screw, and more particularly to an apparatus which does not require a rotation reaction force of the consolidation screw.

[0002]

2. Related Background Art As a method for consolidating soft ground, the applicant has conventionally provided the following methods. That is, Tokiko Sho 61
-18606 (sand pile construction method), Tokuhei 2-26601
2 (Consolidation method for soft ground, Japanese Patent Publication No. 3-110287 (Building method for soft ground), Japanese Patent Publication No. 4-5101 (Manhole construction method for soft ground), Japanese Patent Publication No. 6-724
14 (consolidation method for soft ground), Tokuho 6-99900
(Soil consolidation method and device), Tokiko 7-13373
(Method of building pillar foundations) and so on. However, these methods or apparatuses are compaction for building small structures such as poles and manholes in narrow places specified on soft ground to facilitate installation of the structures. . Japanese Patent Application No. 8-2554029 recently provided by the applicant relates to a method for preventing uneven settlement of a house in soft ground by using a soil pile consolidation method, an uneven land repair of a house having an uneven settlement, and an apparatus used in the method. It is a method and an apparatus for implementing over the entire area of the ground, an apparatus comprising a single consolidation screw and a method of consolidation using the apparatus. As described above, the conventional method has only one consolidation screw, so it is not efficient in the construction of preventive consolidation, and it is difficult to work in the case of narrow alleys or narrow spaces between neighbors when performing consolidation work for land improvement. In some cases, the conventional apparatus requires a means for supporting the rotational reaction force of the consolidation screw.

[0003]

SUMMARY OF THE INVENTION In the present invention, means for supporting the rotational reaction force of the consolidation screw portion is not required in the consolidation work of soft ground using the soil pile consolidation method, and two consolidation screw portions are used. Another object of the present invention is to provide a compacting apparatus for soft ground which is configured as four pieces and has a remarkably improved compacting work efficiency.

[0004]

According to the present invention, a driving motor is mounted on the top of a conveyor screw, and a consolidation screw is mounted on a lower end of the conveyer screw. The spiral of the conveyer screw and the consolidation screw is provided. A consolidation screw mechanism composed of two consolidation screw parts configured so that the winding directions of the blades are opposite to each other, an upper support arm for supporting a driving motor at both ends, and the consolidation at the left and right ends. Screw
A lower support arm integrally having a screw guide for fitting and guiding the portion, and a vertically suspended center at the center of the lower support arm so that the arm can slide up and down at the center of the upper support arm. A compression screw portion support mechanism comprising a leader fitted into the arm, a chain wheel provided on the left and right of the top of the leader, a chain sprocket provided on a lower portion thereof, and a chain wheel and a chain. A digging and consolidation adjusting mechanism consisting of a chain which is attached to the upper support arm across the sprocket, a motor for operating the chain sprocket, and a guide hole for the consolidation screw. And a pressure plate having an appropriate ground contact area on which a weight can be placed, and a consolidation reaction force portion composed of each portion of the weight.
And the motors are hydraulic
The work device is configured to be operable to be connected to a hydraulic device of a working machine. The upper and lower support arms can be configured to be extendable and contractible in the horizontal direction. Further, the weight or the lower support arm may be provided with an extendable outrigger having a jack at an end. It is possible. When the consolidation screw mechanism has four consolidation screw portions, the upper support arm and the lower support arm are configured to be orthogonal to each other diagonally, and a leader is suspended at the intersection thereof. The upper support arm is configured so that the leader can be fitted inside and slidable up and down. Further, the hydraulic control device of the working machine is directly connected to each motor and the hydraulic device by a hydraulic hose. ing. Of course, the excavation advance consolidation adjusting mechanism is provided in the same manner as the case where the consolidation screw part is configured as two, and an outrigger having a jack at the end can be attached orthogonally at the intersection of the lower support arm. In addition, since there are four consolidation screws, the pressure plate of the consolidation reaction force portion is formed with four consolidation screw guide holes, and each of the upper and lower support arms can be configured to be extendable. It is possible.

[0005]

FIG. 1 is a perspective explanatory view of an embodiment of the apparatus of the present invention having two compaction screw portions. The consolidation screw mechanism consists of two consolidation screw parts, the consolidation screw part is a conveyor screw-1, a driving motor-2 mounted on the top and a consolidation screw mounted on the tip.
The drive motor 2 is connected to the hydraulic control device of the work machine 3 by the hydraulic hose 4. Next, as a compacting screw supporting mechanism, an upper supporting arm 6 which connects and supports the driving motor-2.2 at both right and left ends,
A lower support arm 8 having a screw guide 7 at the left and right ends, an upper support arm 6 which is erected at the center of the lower support arm 8 and is inserted into the center of the upper support arm 6. The upper support arm 6 and the lower support arm 8 are configured so as to be able to expand and contract in a certain length in the right and left directions. 1
5 is the adjustment hole. In addition, it is good also as a structure which adjusts with a hydraulic system instead of this adjustment hole 15. Next, the excavation consolidation adjustment mechanism, which is a conveyor screw
1.1 Excavation adjustment into the ground and transport adjustment of the consolidation material 10
A mechanism for performing consolidation adjustment and the like by the consolidation screw 5, and includes a chain wheel 11 provided on the top of a leader 9, a chain plot 12 provided on the lower side, and a chain wheel 11 provided below.
.Chain 13 bridged between 11 and the chain sprockets 12 and 12 and a motor for driving and adjusting the mechanism.
The chain 13 is composed of various parts, and both ends of the chain 13 are appropriately engaged and supported by the upper support arm 6.
Are engaged with the chest plots 12 and 12 so as to be operable.

Next, the compaction reaction force portion will be described. The consolidation reaction force portion is composed of a pressure plate 16 provided with a ground contact area at a required consolidation location and a weight 17 placed on the plate 16, and the pressure plate 16 has a guide hole of a consolidation screw portion. 18.
18 are provided. In each of the mechanisms described above, a weight 17 is placed on the reaction force plate 16, a compression screw 5 is inserted into the screw guide 7, and a hook hook 19 provided on the top of the leader 9 is provided. A hanging compaction screw 5 is hung on a boom 20 of a work machine 3 so as to face a guide hole 18 so that excavation compaction work can be performed. The weight 17 has a jack 24 at the end as shown by the dotted line.
A telescopic outrigger 23 having 24 may be provided so that it can be attached to stabilize the device and reinforce the compaction reaction force.

Next, the operation of this embodiment will be described. Since the present embodiment has the above configuration, this device is installed at a location required for consolidation, and the drive motor is operated by operating the hydraulic control device of the work machine.
2 and the motor 14 is also started to excavate the soft ground with the compacted screw portion. At this time, the excavation depth, that is, the depth of the soil pile formation is determined in advance by the ground survey, and excavation is performed to the predetermined depth. At that time, depending on the softness of the ground, a certain amount of underground earth and sand is carried to the ground by the conveyor screw-1, and the earth and sand is sent back into the soil together with the consolidation material 10 at the time of consolidation.

As shown in FIG. 5, the direction of rotation of each of the consolidation screw portions is such that the rotation of each of the consolidation screw portions is rotated in the opposite direction so as to dig into the ground. Therefore, as shown, the conveyor
Screws 21 of screw-1.1 and consolidation screw
The 5 blades 22 are spirally formed in the directions opposite to each other. The excavation speed of the consolidation screw portion via the chain 13 while adjusting the rotation of the drive motor 2 and the rotation of the motor 14 according to the softness of the ground. To adjust. Opposite 2
Since the rotational directions A and A of the compacting screw portions are opposite to each other, the rotational reaction force generated by the rotation of each of the compacting screw portions is canceled out, and neither vibration nor movement of the apparatus by the rotational reaction force occurs.

When the consolidation screw is dug to a predetermined depth, the consolidation screw portion is reversed, and the consolidation material 10 is fed into the soil by the conveyor screw 1.1. B indicates the reverse direction.
If the consolidation material 10 has earth and sand transported to the ground by excavation, a mixture of the earth and sand, mountain sand, gravel, cement and the like is used. The consolidation material 10 conveyed by the conveyor screw is pushed into the soil around the screw 5 by the consolidation screw 5, and the consolidation screw portion is pushed upward as the consolidation portion is formed, so that the motor is increased. If the sliding movement of the upper support arm 6 is suppressed by the rotation of -14 by the chain 13, the rise of the consolidation screw portion is regulated, and finally the rotation of the consolidation screw portion stops. That is, since the consolidation in the deep portion has been completed, the consolidation screw mechanism is appropriately raised by operating the excavation consolidation adjusting mechanism, and the consolidation material 10 is conveyed to the conveyor screw-1.
-Conveyed by 1 and consolidated by consolidation screw 5. When this operation is repeatedly performed to complete the predetermined consolidation, a solid soil pile like the rock is formed in the ground, and the periphery thereof is considerably consolidated by pushing the consolidation material 10 into the soil. The moisture inside is removed and the soft ground turns into a dry and strong ground. The soil pile formed as described above is formed at an interval equal to the interval between the guide holes 18 formed in the reaction force plate 16, but in the case of a house construction, it is most effective to form the soil pile immediately below the foundation of the pillar of the house. In practice, the interval is formed as one interval (1,820 m), half interval (0.91 m), or every 2 m. Therefore, the reaction plate 16 is also configured such that the interval between the guide holes 18 is set to half or one or two meters.
Is prepared, and consolidation is performed by adjusting the distance between the upper supporting arm 6 and the lower supporting arm 8 in accordance with this. If the upper and lower support arms 6 and 8 are not configured to be extensible, the device of the present invention may be prepared and used as upper and lower support arms having two or three types of width.
In addition, the reaction force plate 16 also sets the interval between the guide holes 18 to one half, one half to one half,
What is necessary is just to prepare a thing of 2 m or the like.

When the consolidation operation proceeds and the soil pile is formed close to the ground surface, the ground is pushed up to the ground surface during the consolidation operation, and the consolidation force of the consolidation screw 5 is significantly reduced, so that the weight 17 prevents this. With this weight, the rise of the ground surface portion is suppressed, the excavation consolidation adjusting mechanism is operated to apply a force for pushing the leader 9 downward, and the consolidation screw 5 is strengthened in the consolidation rotation, so that the portion close to the ground surface portion is firmly strengthened. Consolidate.

Next, the effect of this embodiment will be described. In the case of the present embodiment, the consolidation screw portion is configured as two in two, and the whole device is relatively small and simple. Therefore, as shown in FIG. Even when the working area is extremely small, the land repair work can be easily performed by extending the boom 20 of the working machine. Also, since two compacting screw portions rotate simultaneously in opposite directions to perform excavation and compacting work, it is efficient and has a great effect of canceling out the rotational reaction force mutually. Therefore, there is an effect that it is not necessary to provide a rotational reaction force receiver in the apparatus as in the related art, and thus the apparatus can be downsized and simplified. When using this device for consolidation of soft residential land before building a house, the consolidation screw part is
Even simple calculations have the effect of increasing work efficiency by a factor of two.

Next, a description will be given of an embodiment of the apparatus having four medium-consolidation screw portions according to the present invention. An effective feature of the consolidation method for soft ground is that soil piles (pile bodies) formed by consolidation do not support the load of construction structures such as houses, but remove moisture from soft ground or excessively aggregated structures. Is to form a ground (giant single-grained ground) into a single body with a consolidation influence range formed around the soil pile and its surroundings, thereby obtaining a ground having a stronger supporting force as a whole. For this purpose, it is desirable that the earth pressure for obtaining the supporting force be averaged. By arranging, the ground becomes the consolidation ground in which the earth pressure is leveled, and the consolidation can be carried out more efficiently and efficiently. A general application of the present invention is to consolidate soft ground for construction of houses, etc., but it is more effective to provide a soil pile immediately below pillars and the foundation of a house. 2m
It is already provided by the applicant to form a soil pile at every or half of the position,
In a single consolidation screw unit, there is a problem that many consolidation devices are required even if they are arranged and used in a single work machine by centralized control. Therefore, if a large number of soil piles can be formed at once, the compaction can be performed very efficiently with at least one working machine having at least one compaction device. Therefore, in the present invention, the number of the consolidation screw portions in the above-mentioned embodiment is changed from two to four, and the consolidation device is constituted by setting the interval between the screws to any one of the above dimensions. Therefore, a description will be given next with reference to the accompanying drawings.

1. About Consolidation Screw Mechanism This mechanism consists of four consolidation screw parts equipped with a drive motor-2 on the top of the conveyor screw-1 and a consolidation screw 5 on the lower part. The motors 2 are connected to the hydraulic control device of the working machine 3 by the hydraulic hoses 4 at the same intervals. The consolidation screw 5 is inserted into screw guides 7 provided on the left and right ends of the lower support arms 8.8 described later, and is provided with a guide hole 1 provided in the pressure plate 16.
I'm facing 8. It is to be noted that the spiral blade 21 and the spiral blade 22 of the consolidation screw portion have a spiral configuration opposite to that facing diagonally as in the above-described embodiment. 2. Consolidation Screw Support Mechanism The consolidation screw support mechanism is composed of two upper support arms 6.6 that are directly connected to drive motors 2 facing each other on a diagonal line and are orthogonal to each other, and screw guides 7 at both left and right ends. Are integrally formed and vertically suspended at the intersection of the two lower support arms 8.8 and the lower support arms 8.8 which are orthogonal to each other, and are slidable at the intersection of the upper support arm. The inner fitting upper support arm 6.6 is configured to be vertically slidable. 3. Excavation consolidation adjustment mechanism Next, the excavation consolidation adjustment mechanism, which is a leader-9
When the wheel is engaged with the chain sprockets 12 and 12 and the chain sprockets 12 and 12 provided at the lower part of the leader 9 and the chain wheel 11, the motor 14 is rotated.
And chain wheel 11 ・ 11 and chain sprocket 1
2 and 12 and a chain 13 extending between the upper and lower arms 13.
The chain 13 is actuated by the rotation of the motor 14 to suppress and adjust the vertical sliding speed of the upper support arm 6 on the leader 9 so that the excavating speed and consolidation of the consolidation screw portion are performed. Adjusting the speed and the compaction density is the same as in the previous embodiment. 4. Consolidation Reaction Section The consolidation reaction section is provided with four guide holes 18 at four corners of the square of the reaction plate 16 having an appropriately large ground contact area. The consolidation screw 5 and the conveyor during consolidation work are provided. -It is configured to provide a guiding action for the screw-1. A weight 17 having an appropriate weight is placed at the center. And its weight 1
This device, which comprises a consolidation screw mechanism, a consolidation screw support mechanism, and an excavation consolidation support mechanism, is mounted on a lower support arm 7 via lower support arms 8. The lower support arm
Outriggers 23 ・ orthogonal to each other at the intersection of
A support jack 24 may be provided at both ends of the riggers 23 to stabilize the entire apparatus at the time of work and to assist the consolidation reaction force.

The blades 21 and 22 of the opposing consolidation screw portions directly connected by the upper and lower support arms 6.8.
Is similar to the above-mentioned embodiment in that the formation direction is spiral in the opposite direction, and the drive motor-2 and the motor
Reference numeral 14 is directly connected to the hydraulic control device of the work machine by the hydraulic hose 4, and is not shown when the upper and lower supporting arms 6.8 and the outrigger 23 are configured to be expandable and contractable by hydraulic pressure. Is directly connected to the hydraulic control device of the work machine by a hydraulic hose. The other functions of the excavation consolidation adjusting mechanism and the like are exactly the same as those of the above embodiment.

Next, the effect of this embodiment will be described. Since the blades 21 and 22 of the consolidation screw portion supported in parallel by the upper and lower support arms 6 and 8 in the present apparatus are formed in a spiral shape in the opposite directions, respectively, the excavation is performed and the consolidation material is conveyed. Also, the consolidation can be performed simultaneously by the four consolidation screw portions, which is extremely efficient. In addition, since the rotation of the consolidation screw portions supported by the two supporting arms 6 and 8 rotates in opposite directions, the rotational reaction force is canceled out. Therefore, there is an advantage that there is no need to provide a mechanism for supporting the rotational reaction force in the present apparatus, and the apparatus can be simplified accordingly. Next, when there is unevenness on the surface of soft ground requiring consolidation or when it is inconvenient to install the equipment due to sloping ground, there is also an advantage that it can be compacted by installing horizontally with outriggers and jacks provided orthogonally. Depending on the softness of the ground requiring consolidation, use a pressure plate with different guide hole intervals provided in the pressure plate, and adjust the length of the upper and lower support arms in accordance with this interval for consolidation. Has the advantage that it is also possible. As shown in FIG. 7, when the entire surface of the soft ground is compacted before constructing a building such as a house, even if the soil pile 25 is formed by compacting the entire surface with four compacting screw portions, four piles are formed. There is an inconvenience that a consolidation uncompleted portion 27 in which no consolidation influence area 26 is formed is formed in a central portion surrounded by the soil pile. In such a case, it is possible to efficiently consolidate the unconsolidated portions 27 in one consolidation section 27 by using the present apparatus, and the soil pile 25 is formed in the unconsolidated portions 27 and the consolidation influence area 26
Overlap each other, the mutual consolidation affected area 26 appears as a strong consolidation part, and the moisture is discharged from the soft ground, and the entire consolidated ground is formed like a single rock and the bearing capacity against the load is obtained. Will be greatly enhanced. Therefore, there is an effect that a phenomenon that even a part of the building sinks due to the load of the building never occurs. That is, it is extremely effective in forming such a ground with enhanced supporting force.

[Brief description of the drawings]

FIG. 1 is an explanatory perspective view of a soft ground consolidation device configured with two consolidation screw portions. The imaginary line indicates an outrigger and a jack which are detachably provided. FIG. 2 is a perspective explanatory view of a soft ground consolidation device configured with four consolidation screw portions. FIG. 3 is an explanatory side view when the device of the present invention is installed in a narrow place. FIG. 4 is an explanatory plan view when the device of the present invention is installed between houses. FIG. 5 is an explanatory view of the action of canceling the rotational reaction force of the apparatus of the present invention constituted by two consolidation screw portions.
When the part rotates in the A direction, the rotational reaction force acts in the B direction,
When rotated in the direction B, a rotation reaction force is generated in the direction A. FIG. 6 is an explanatory view of the action of canceling the rotational reaction force of the apparatus of the present invention constituted by four consolidation screw portions.
When the part rotates in the A direction, the rotational reaction force acts in the B direction,
When rotating in the B direction, a rotational reaction force is generated in the A direction. FIG. 7 is an explanatory plan view showing a partly formed state of a soil pile and a consolidation affected area in a case where consolidation incomplete portions generated when the entire surface of soft ground is consolidated using the apparatus of the present invention are further efficiently consolidated.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conveyor screw 2 Driving motor 3 Work implement 4 Hydraulic hose 5 Consolidation screw 6 Upper support arm 7 Screw guide 8 Lower support arm 9 Leader 10 Consolidation material 11 Chain wheel Reference Signs List 12 chain sprocket 13 chain 14 motor 15 adjustment hole 16 pressure plate 17 weight 18 guide hole (for compaction screw) 19 hook hook 20 boom 21 conveyor screw blade 22 compaction screw blade 23 outrigger 24 Support Jack 25 Soil Pile 26 Consolidation Influence Area 27 Consolidation Unfinished Part A Direction Rotation Direction of Consolidation Screw Part B Consolidation Rotation Direction of Consolidation Screw Part

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E02D 3/02 E02F 5/02 E02F 5/02

Claims (6)

(57) [Claims] 1. A consolidation screw mechanism comprising a drive motor mounted on the top, and two consolidation screw portions, which are formed so that winding directions of spiral blades are opposite to each other, are provided at appropriate intervals. An upper support arm for supporting the driving motor at both ends, a lower support arm having screw guides at left and right ends, and a central portion of the both arms to be integrated with the lower support arm. And a chain screw provided at the top of the leader and a lower part of the chain wheel provided at the top of the leader. An excavation consolidation adjusting mechanism comprising a chain sprocket provided, a chain spanned by the chain wheel and the chain sprocket and engaged with the upper supporting arm, and a motor for adjusting the driving of the chain; and a consolidation screw. And a pressure plate having an appropriate contact area for mounting a weight and a consolidation reaction force portion comprising the weight. A soft ground consolidation device in which a consolidation screw placed on a weight and capable of excavation and consolidation by a working machine and hydraulic operation through a screw guide and guide holes of the consolidation screw. 2. The soft soil compaction device according to claim 1, wherein an outrigger having a support jack at one end is configured to be attachable to the weight. 3. The soft ground compacting apparatus according to claim 1, wherein the upper supporting arm, the lower supporting arm, the outrigger and the jack are configured to be extendable and contractible. 4. A consolidation screw support mechanism comprising two upper support arms and a lower support arm orthogonal to each other, a consolidation screw mechanism comprising four consolidation screws and a consolidation screw guide hole. The soft ground consolidation device according to claim 1, comprising four consolidation reaction force portions. 5. The soft ground consolidation according to claim 4, wherein an extendable outrigger having an extendable support jack at one end is provided orthogonal to an orthogonal portion of the lower support arm. apparatus. 6. The soft ground compaction device according to claim 4, wherein the upper support arm and the lower support arm are configured to be extendable and contractible.