JPH0434205Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention is based on the proximity line (a proximity line 10 mm from the boundary line is also acceptable. Hereinafter simply referred to as the proximity line) that is close to the boundary line (including buildings). On the top, there is a chain that slides and transfers the excavation agitator used to construct various walls such as connecting walls, connection walls, and superimposed walls (hereinafter simply referred to as various walls "including temporary walls") for earth retaining wall construction etc. This invention relates to a plow-type metal fitting with excavating and stirring claws that can be installed in large numbers in a machine.

``Prior Art'' As a conventional device for constructing various types of walls for earth retaining wall construction, there is an earth retaining device equipped with a three-shaft auger screw.

The gist of this equipment is that it is equipped with a specially constructed auger screw, which excavates while forcing cement milk into the tip of the auger screw, and mixes the excavated soil and cement milk to form a soil-cement-like product. After carrying out this work and the auger screw has dug to the designated position, it can be pulled up. Subsequently, a wall is constructed here by inserting and burying H steel, steel pipe piles, etc.

In addition, similar technical documents include JP-A-47
There is an underground continuous wall construction method No. 14909, and this invention involves installing a jet pipe between opposing steel plates, excavating the ground via this jet jet, and press-fitting cement into the excavated hole. This is a configuration that allows the entire device to move forward in the horizontal direction.

Another method was to insert and bury gabions inside the soil-cement-like retaining wall material.

``Problems that the invention attempts to solve'' Both the device equipped with a three-axis auger screw with the structure detailed above and the underground wall construction method are used to press cement milk into a soil-cement-like structure at the same time as the excavation hole. This method involves later pulling up the auger screw and then inserting and burying H steel, etc.

Therefore, this foundation work can only be done at a location away from the proximity line, and this type of earth retaining work is usually done approximately 20cm to 30cm further from the proximity line.

This method results in a lot of land being wasted, which is very contradictory these days when people are calling for effective use of land. This phenomenon becomes more pronounced as the number of underground and above-ground floors increases, and improvement thereof is highly desired.

Furthermore, in the inventions of the above-mentioned technical documents, even if it is possible to construct a shallow continuous wall, it is not possible to construct a shallow continuous wall.
It is completely impossible to construct various types of walls that are longer than m (hereinafter referred to as long walls) due to their earth pressure resistance and other factors.

For the reasons described above, it has been impossible to construct various long walls on soft ground in one process using the currently available soil cement.

In particular, when constructing various walls on soft ground, which is the main purpose of the present invention, with the above-mentioned device, it is difficult to insert H steel etc. when the soil becomes like cement after pouring cement milk. There is a possibility that the cement milk may flow out, and that the cement milk and the excavated soil are not sufficiently kneaded to cope with the wall load.

Furthermore, in the technical literature or the inventions of the prior art, construction on hard ground is considered difficult.

``Means for solving the problem'' In view of the above, the present invention is designed to reliably and easily construct various types of long walls that can sufficiently handle the wall load on the ground on the adjacent line, using the boom of heavy equipment. The main body of the drive unit is suspended in a cantilevered manner on a turret that can rotate 180 degrees, and is equipped with a chain gear for driving and a locking mechanism for connection at the lower end between steel plates placed opposite each other at narrow intervals. A drive device for driving the driving chain gear is provided on one side wall surface, and a chain is wound around the chain gear. A narrow excavating and agitating section made of steel is provided through the connecting locking mechanism so as to be able to be combined or separated, and a driven chain wheel around which the chain is wound. The excavation agitator is composed of an excavation agitator, and the forward and reverse rotation chain of this excavation agitator has a plurality of excavation agitator claws protruding from the depth and width of the bone frame and the end face of the groove forming member. Mold fittings are installed.

In particular, the present invention ensures that the excavated soil does not rise upwards and is reliably fed into the excavation agitation section. In other words, in order to ensure that the excavated soil is guided into the excavation agitation unit and stirred and mixed with the cement milk injected from the pipe to produce soil cement, the claw part of the excavation agitation plow type metal fitting is used. However, the middle column steel material that makes up this excavation stirring section protrudes more than the depth width of the so-called frame material.
In addition, almost the entire plow-shaped metal fitting with excavating and stirring claws is configured to protrude from the end surface of the groove forming member.

In addition, in order to be able to handle even hard ground, the present invention has V-shaped notches formed on the upper and lower sides and on the tip side of a set of excavating stirring claws, and in the forward and backward direction (forward movement of the chain). (Corresponds to the backward direction.)
A pair of claw portions each having a sharply pointed tip are provided.

Furthermore, in order to enable the plow type metal fitting with excavation and stirring claws to fully demonstrate its function as a plow and to achieve mixing of the excavated soil and cement milk, the tip of a set of excavation and stirring claws is A gap is formed between the two, a through hole is formed between the bases of the pair of excavating and stirring claws, and the claws are formed in a bifurcated shape. It is the composition.

``Function'' Next, to explain the function of the present invention, the main body of the driving device is equipped with a turret that can rotate 180 degrees on the boom of heavy machinery, and a driving device that drives a chain equipped with a large number of excavating and stirring plow-shaped metal fittings. Suspend in a cantilevered manner.

When combining the excavating and agitating unit, which can be freely combined or detached, with the suspended drive device main body, the drive device main body is first lifted up using heavy machinery or the like, and the drive device main body is placed in a suspended state.

After that, use the same heavy equipment or other heavy equipment to lift the excavation agitation unit and bring it close to the already suspended drive unit, insert the insertion leg provided on the drive unit into the insertion space of the excavation agitation unit, and then The driving device main body and the excavating agitator are combined by engaging the locking pin of the locking mechanism provided in the middle steel pillar of the excavating agitator.

After that, a chain having a large number of digging and stirring plow-type metal fittings with claws is suspended between the driving chain gear and the driven chain gear, and the chain and the digging and stirring plow-type metal fittings are connected to the driving chain gear. Circulation can be made between the groove forming member provided in the excavation agitation section and the driven chain gear.

Therefore, after positioning the combined excavation agitator on the line of proximity, the driving chain gear is driven,
By moving the chain and the plow type metal fitting with excavation and stirring claws continuously or intermittently (in this invention, this rotation is referred to as forward and reverse rotation) in the forward or reverse direction, respectively, the adjacent The soil on the line is excavated with a plow-type metal fitting with excavating and stirring claws.

This excavation is reliably carried out by a pair of claws provided in the forward and backward (back and forth) directions that constitute the excavation stirring claw. In addition, if this claw part becomes worn, the entire excavating and stirring claw should be replaced. As described above, cement milk is injected through the pipe at the same time as excavation is started. Therefore, excavated soil and cement milk are
Kneading and agitation is carried out through the rotation of a driven chain gear, the rotation of a plow-type metal fitting with an excavation and agitation claw, and in this case, a gap and a through hole are formed between the pair of excavation and agitation claws. In addition, since the claw portion is formed in a bifurcated shape, it functions as a plow, and the excavated soil and cement milk are sufficiently kneaded. Furthermore, in order to ensure that the excavated soil does not rise upwards and is reliably fed into the excavation agitation section, the claws of the excavation agitation plow-type metal fittings are connected to the middle pillar steel that constitutes the excavation agitation section. It protrudes beyond the depth and width of the so-called frame frame material,
Furthermore, almost the entirety of the plow-shaped metal fitting with excavating and stirring claws is configured to protrude from the end surface of the groove-constituting member. Therefore, the excavated soil is not discharged to the ground through this protrusion, in other words, the excavated soil is reliably guided into the excavation agitation section, and mixed with the cement milk injected from the pipe to form soil cement, which will be described later. is configured to generate.

In addition, since a window hole is formed in the body of the plow-shaped fitting, the excavated soil and the mixed soil cement enter the excavation agitation section, and homogenized soil cement is generated throughout the excavation hole. Some of the wall materials for various walls are constructed in a cement-like manner.

By sequentially repeating the above operations,
Through excavating the soil, mixing it with cement milk, and stirring it, various wall materials are gradually constructed into a soil-cement-like material.

Then, when the shaped steel material that also serves as the excavation stirring mechanism has dug to a predetermined position and the mixing and stirring of the excavated soil excavated to the predetermined position and cement milk has been completed, that is, the various walls that have become soil cement-like. The material is constructed.

In this case, in a situation where the soil is hard, earth pressure resistance is applied to the excavating and stirring plow-shaped metal fittings with claws and the chain that constitute the shaped steel material as they are sequentially dug into the ground. However, this earth pressure resistance can be avoided from being absorbed in the rotation of the driven chain gear rotated via the circumferential transition of the chain, and also from pressing the chain against the groove component. Furthermore, since the driven chain gear is attached to the shaft via the collar, tearing of the shaft is avoided.

As described above, when the shaped steel material has dug to the designated place and the various wall materials of the soil-cement type have been constructed as described above (the upper end of the regular shaped steel material is almost flush with the ground), Lift the excavation agitator when the excavation agitator is worn out.

Then, shaped steel members each having a framework made of steel and equipped with reinforcing bars are sequentially inserted into the wall materials of the various walls, which are shaped like soil cement. Various walls will be constructed here.

After that, the excavation agitator is lifted up and moved to the next proximity line.

Then, as mentioned above, the excavation agitator is moved to the next adjacent line, the chain is moved around and excavated, the excavated soil and cement milk are kneaded and stirred, and the various wall materials that have become soil-cement-like. By repeating the construction of , and the insertion and embedding of shaped steel into the various wall materials that have become soil-cement-like,
Various types of walls in which shaped steel materials are inserted and buried are also constructed on this proximity line.

In addition, as mentioned above, various types of walls are installed in a spline type on the adjacent line, connected, continuous, superimposed, etc., and have a soil cement type structure in which shaped steel is inserted and buried. Build wall materials for various walls. Alternatively, various types of soil-cement-like wall materials are constructed so as to overlap with the side surfaces of various soil-cement-like wall materials in which shaped steel materials are inserted and buried (so-called, soil-cement-like wall materials are already constructed). By scraping off a portion of the wall material of each type of wall that has become soil-cement-like, the next various wall materials that have become soil-cement-like are constructed.)

``Example'' Below, one embodiment of the present invention will be explained in detail based on the drawings. 1 is an excavation agitation section, and this excavation agitation section 1 is installed in several vertically installed, for example, H steels. A frame frame 2 is constructed of a cross-shaped frame consisting of a steel column 3 and several reinforcing steel plates 4 such as flat steel that intersect with the middle steel column 3, and are provided on both sides of the frame frame 2. A chain having a groove forming member 6 made of C-shaped steel and a large number of plow-shaped metal fittings with digging and stirring claws, which will be described later, is wound so as to form a chain groove 5 for a chain guide, and a steel plate (commercially available, for example, 6 mm to 9 mm) is wound. It is composed of a driven chain gear 7 made of a steel plate of about 100 mL, and a pipe 8 for injecting cement milk that penetrates the frame material 2.

A driven chain gear 7 is pivotally attached to the lower end of the excavation agitation section 1 configured as described above. As shown in the figure, this driven chain gear 7 is provided between the groove forming member 6 and the cut grooves 26 and 23 formed in the middle column steel material 3, and is brought into sliding contact with the cut edge surfaces of the cut lines 26 and 23. It is configured to ensure that the thin driven chain gear 7 has no lateral vibration and smooth rotation.

Further, the driven chain gear 7 is made of a steel plate, and since it is thin, it is rotatably attached to a shaft 11 provided on a channel steel mounting plate 10 via a collar 9. This prevents the shaft 11 from being cut even when the driven chain gear 7 rotates.

In the figure, 12 is equipped with a drive device (in the present invention, a motor) 13 suspended from a heavy machine 30, etc., and a chain guide 14 is provided around the steel plates 12a, 12a arranged oppositely at a narrow interval. The main body 12 of the drive device is provided with a drive chain gear 15 which is fixed to the output shaft of the drive device 13, and a chain gear 15 is provided at the lower end of the drive device main body 12. Insertion legs 16, 1 inserted into the space of the excavation agitation unit 1 extending from the lower end.
6 are provided respectively. In addition, the insertion leg 16,
The tip of 16 is slightly tapered, so that it can be inserted into the excavating and agitating section 1 reliably and easily. A pair of cylinders 17 are provided at the lower end of the drive body 12, and piston rods 17a, 17a extend from the drive body 12. Thereby, the gap formed between the drive device main body 12 and the excavation agitation section 1 is expanded or contracted, and the tension of the chain 18 suspended therebetween is adjusted.

In the figure, reference numeral 19 denotes a plow-type metal fitting with a large number of excavating and stirring claws attached to the chain 18 suspended between the driving chain gear 15 and the driven chain gear 7, as described above. 19 protrudes from the depth and width of the groove forming member 6, which has a window hole 20a extending in the longitudinal end face of the chain link plate 29 of the chain 18 and at least two protrusions 20b for attaching excavation stirring claws. A plow-shaped metal fitting body 20,
V-shaped notches 21a are removably provided on each of the protrusions 20b of the plow-shaped metal fitting main body 20, and are formed on the upper and lower sides X, Y, and toe side Z, respectively, and are provided in the forward and backward directions of the chain 8. and a pair of excavating and stirring claws 22 formed by a pair of claw portions 21 having sharply pointed claws 21b.

The set of excavation stirring claws 22 having the above-mentioned structure functions as described above, and includes, for example, a pair of claw portions 21 provided in the direction of forward and backward movement (in the illustrated example, there are four on each of the forward side and the backward side). , but not limited to this example). Further, if the claw portion 21 is rubbed, the entire excavation stirring claw 22 is replaced. In addition, a gap S is formed between the tip portions 22b of one set of excavation stirring claws 22, and a through hole Sa is formed between the base portions 22a of this one set of excavation stirring claws 22, penetrating in the longitudinal direction. In addition, since the claw portion 21 is formed in a bifurcated shape, it functions as a plow, and the kneading of the excavated soil and cement milk is achieved. Furthermore, the excavated soil
In order to ensure that the excavation stirring part 1 is fed into the excavation stirring part 1 without rising upward, at least half or more of both claw parts 21 of the excavation stirring claw part 19 constitute this excavation stirring part 1. It has a protruding dimension D that protrudes larger than the depth width of the frame material 2, and almost the entirety of this excavating and stirring plow-shaped metal fitting 19 has a protruding dimension F from the end surface of the groove forming member 6. These protruding dimensions D and F, the through hole Sa formed between the pair of excavating and stirring claws, and the window hole 20 of the plow-shaped metal fitting body 20
The excavated soil is reliably guided into the excavation agitation section 1 through a, and the excavated soil is agitated and mixed with cement milk injected from a pipe 8.

In the figure, 27 is a lock mechanism, and this lock mechanism 27
By engaging the locking pin 28 in the locking hole 3a provided in the extension of the middle pillar steel material 3 constituting the excavation agitation section 1, the excavation agitation section 1 is attached to the drive device main body 12. are combined.

In the figure, 29a is a chain roller that constitutes the chain 18.

In the figure, 30 is heavy equipment, 31 is a pulley, 32 is a boom,
33 is a leader. B is the proximity line.

"Effects of the Invention" As detailed above, the present invention is characterized in that almost the whole of the plow-type metal fitting with excavation and stirring claws protrudes from the groove component, and that the claw part of the plow-type metal fitting with excavation and stirring claws is attached to the bone frame material. By protruding further and providing a window hole in the plow type metal fitting body, the excavated soil is not discharged to the ground, but is reliably guided into the excavation agitation section 1 and injected from the pipe. It is stirred and mixed with cement milk to produce high quality soil cement.

In addition, in the present invention, a pair of excavating and stirring claws that are detachably provided on each protrusion of the plow-shaped metal fitting main body are provided with V-shaped notches on the upper and lower sides and on the toe side, respectively. Since it is composed of a pair of claws each having a sharp tip, it is possible to excavate quickly in a variety of soil types, and has excellent excavation efficiency.

Furthermore, the present invention has the advantage that since the set of excavating and stirring claws is detachable, it can be replaced depending on the soil quality, and when the claws become worn out, they can be easily replaced.

Furthermore, the present invention has gaps and through-holes formed between the pair of excavating and stirring claws, and the claws are formed in a bifurcated shape, so that it functions as a plow and mixes the excavated soil with the claws. Mixing with cement milk is achieved and a robust wall material is constructed.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a cross-sectional view showing the relationship between the excavation stirring part and the drive device main body, and FIG. 2 is an enlarged front view of a plow-type metal fitting with an excavation stirring claw. Figure 3 is a side view of Figure 2, Figure 4 is a side view of Figure 2.
The cross-sectional view in the figure and FIG. 5 are schematic diagrams showing the state of use. DESCRIPTION OF SYMBOLS 1... Excavation stirring part, 2... Bone frame body, 3... Middle column steel material, 3a... Locking hole, 4... Reinforcement member, 5...
Chain groove portion, 6... Groove component, 7... Driven chain gear, 8... Pipe, 9... Collar, 10...
... Mounting plate, 11 ... Shaft, 12 ... Drive device main body,
12a... Steel plate, 13... Drive device, 14... Chain guide, 15... Drive chain gear, 16...
...Insertion leg portion, 17...Cylinder, 17a...Piston rod, 18...Chain, 19...Plough type metal fitting with digging and stirring claw, 20a...Window hole, 20b...
Projection, 20...Plough type fitting main body, 21a...Notch, 21b...Toe, 21...Claw, 22...Drilling stirring claw, 23, 26...Cutting line, 27...Lock mechanism, 28 ...Lock pin, 29...Chain link plate, 29a...Chain roller, 30...
...Heavy equipment, 31...Pulley, 32...Boom, 33...
...Leader, B...Proximity line, D, F...Protrusion dimension,
S...Gap, Sa...Through hole.

Claims (1)

[Scope of Claim for Utility Model Registration] In order to construct various walls such as connecting walls, connecting walls, superimposed walls, etc. made of soil cement, excavated soil, and shaped steel materials on the adjacent line close to the boundary line,
The excavation agitator is cantilevered from a leader that can rotate 180 degrees from the boom of heavy equipment. It is equipped with a chain gear for driving between steel plates placed at narrow intervals, and a locking mechanism for connection at the bottom end. and a drive device main body having a structure in which a drive device for driving the drive chain gear is provided on one side wall surface of the steel plate, and a chain is wound around the drive chain gear; A bone frame formed in a cross shape by steel materials that can be freely combined or separated via a locking mechanism of the main body, a groove forming member provided on both sides of the bone frame and into which the chain slides; An excavation consisting of a driven chain gear made of a steel plate protruding from the lower end of the groove component and the bone frame material, and a pipe for press-fitting cement milk that penetrates the bone frame in the vertical direction. A plow-type metal fitting with excavation stirring claws, which is installed in an excavation agitator consisting of a stirring part and protrudes from the depth width of the bone frame and the end face of the groove forming member, the excavation stirring claws The plow-type metal fitting includes a plow-type metal fitting main body having a window hole extending in the longitudinal end face of the link plate of the chain and at least two protrusions for attaching excavation and stirring claws, and each of the plow-type metal fitting main bodies. A pair of excavating and stirring claws having a pair of sharply pointed claws facing in the forward and backward direction of the chain, which are detachably attached to the protrusion, and a gap formed between the excavation and stirring claws; A plow-type metal fitting with an excavation agitation claw for an excavation agitator used to construct various walls such as connecting walls, connecting walls, and overlapping walls that are composed of through holes. In order for the excavation and stirring plow-type metal fitting with claws to function as a plow, a gap is formed between a pair of excavation and stirring claw parts attached to the plow-type metal fitting body, and this pair A large through hole is formed between the bases of the excavating and stirring claws, and the claws are bifurcated. A plow-type metal fitting with an excavation agitation claw for an excavation agitator used to construct various types of walls such as connecting walls, connecting walls, and superimposed walls. The excavating and stirring claw has a configuration in which V-shaped notches are formed on the upper and lower sides and the toe side, respectively, and a pair of claws having sharply pointed claws in the forward and backward direction of the chain. A plow-type metal fitting with an excavation stirring claw for an excavation agitator used for constructing various walls such as a connection wall, a connecting wall, and a superimposed wall according to claim 1 or 2.