JPH0352816Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention is based on the 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). A connecting wall for earth retaining wall construction, etc., and a wall piece for a connecting wall that also serves as an excavating earth removal machine that can be used as a connecting wall, and is a type that can be left underground and is constructed of steel plates, shaped steel, H-shaped steel, etc. The present invention relates to the structure of a wall piece for a connecting wall.

BACKGROUND OF THE INVENTION The present applicant (assigned to Banno Kogyo Co., Ltd.) has already proposed a number of inventions or ideas regarding earth retaining wall pieces for conventional earth retaining wall construction.

For example, Utility Application No. 38563 (1983)
No. 154035) Structure of wall piece of earth retaining wall constructed by bucket conveyor
-233328) method and equipment for installing retaining walls using an excavator, Utility Application No. 189743 (1989)
No. 93235), the structure of the earth retaining wall piece, etc.

The gist is an upper drive casing that is equipped with a pair of insertion legs, a cylinder, and a drive device, and to which an earth retaining wall piece to be described later is combined, and an earth retaining wall that can be attached to and separated from the upper drive casing. It consists of a piece.

Several types of configurations have been disclosed for this earth retaining wall piece. Namely, the first earth retaining wall piece has two steel plates placed opposite each other at a narrow interval, and an H-shaped steel plate provided between the steel plates. The steel plate and the groove forming member constitute the groove portion for sliding contact of the chain. The second earth retaining wall piece is a concrete earth retaining wall piece in which a groove portion is provided using a reinforcing member such as an H-shaped steel or a groove forming member such as a chain guide C or type steel.

In such a structure, the drive chain suspended between the upper drive casing and the earth retaining wall piece is connected to the upper drive casing by the rotation of the drive chain gear provided on the upper drive casing. It has a structure in which it slides into grooves provided in the combined earth retaining wall pieces.

Furthermore, as a prior art, there is an invention of an underground continuous wall construction method and an apparatus used in the construction method in Japanese Patent Application Laid-Open No. 59-85021.

This invention provides a PC panel having a substantially rectangular shape when viewed from the front so that it can be combined with or separated from a drive device,
This is a construction method in which the PC panels are dug into the ground and then left underground once they reach a predetermined location underground.

There is also a patented invention for an excavation device for creating underground walls, published in Japanese Patent Publication No. 16804/1973.

This patented invention involves excavating a flat hole through a cutter bit with a claw-shaped cross section provided between wall plates disposed at narrow intervals, then pumping wall material into the excavated hole, and connecting it underground. It is a machine that builds walls.

``Problems to be solved by the invention'' In the method in which the chain of the structure detailed above slides into the trench, as the earth retaining wall piece is dug into the ground, the chain and excavation bucket etc. Earth pressure resistance is applied to the chain, and the chain is pressed into contact with the groove of the earth retaining wall piece.

As a result, the chain cannot be driven smoothly, and large earth pressure resistance is applied to the chain, excavation bucket, etc., increasing the chances of machine damage and loss. In addition, long earth retaining wall pieces (the same applies to wall pieces for connection walls), e.g.
It is simply impossible to bury earth-retaining wall pieces more than 10 meters deep, and it is currently not being carried out.

In addition, it may cause malfunctions such as machine damage, decrease in excavation speed, etc., and ultimately, work may be interrupted.
There are problems such as a long working time due to the interruption, and there are also many mechanical problems.

In addition, attempting to solve this problem would require a large driving force from the drive device located in the upper drive casing, which poses a mechanical problem.

Furthermore, if a structure is adopted in which another guide mechanism, such as a chain gear for a driven gear, is used in place of the groove section consisting of a groove component and a steel plate, it can be expected to be mechanically effective, but it will also reduce costs, resource savings, and excavation. This also has a considerable negative impact on the total weight of the machine.

Furthermore, the invention in the prior art is disclosed in Japanese Patent Application Laid-Open No. 59-85021.
In the invention of No. 1, it is necessary to construct two guide holes in the ground, which results in poor workability. Also, since the lower end of the PC panel is not converged, smooth insertion (excavation, hereinafter the same) into the ground cannot be expected. In addition, in a configuration in which rollers are provided on both 1/4 arcuate portions of the bottom edge of the PC panel, large earth pressure resistance is applied to the horizontal portion of the bottom surface of the PC panel and the endless cutters that move through this horizontal portion, resulting in smooth movement of these endless cutters. Well, we can't expect a round trip.

In addition, among the prior art, the patented invention of Japanese Patent Publication No. 16804/1970 is a method for excavating with a cutter bit having a claw-shaped cross section.
And, since the structure is such that the wall material is pumped into the excavated hole after removing the excavated soil and forming the excavated hole, the device is not a device in which the wall piece member (wall piece material) is left underground. It seems that.

In particular, there is no clear explanation regarding the sprocket of the patented invention, but since it seems to be a normal sprocket, the sprocket used for the detachable type (leave underground type) that is the object of the present invention has a structure. This is unrealistic in terms of weight reduction and economic efficiency of the surface or mechanism.

Furthermore, since the tip of the cutter bit with a claw-shaped cross section of the patented invention does not have a structure that protrudes from both ends of the wall plate in the longitudinal direction, when inserting the entire device, the soil wall surface in the longitudinal direction The excavation
Insufficient and smooth excavation is simply impossible.

Furthermore, the invention of Japanese Patent No. 59-85021 and the patented invention of Japanese Patent Publication No. 48-16804 have a structure in which the invention is applied between a large number of endless cutters, between endless cutters on both outer sides and a side stopper, or between a large number of sprockets and a chain. The structure makes it easy for earth, sand, pebbles, etc. to get in, and the following problems can be considered.

Once you get stuck in it, you won't be able to make a smooth transition from now on, which is very difficult.

It also causes slower work, longer work, or higher construction costs.

``Means for solving the problem'' In view of the above, the present invention has been developed to allow a detachable type (separable type) connecting wall piece to be smoothly inserted into the soil through excavation with a hook-shaped bucket. to do. Also, when inserting the wall piece for the connection wall into the soil,
This avoids earth pressure resistance to the chain equipped with the claw-shaped bucket cart suspended between the wall piece for the connection wall and the drive device main body, thereby allowing the chain and the claw-shaped bucket cart to rotate smoothly. To allow for the transition and thereby reduce the load on the excavating and removing machinery. Furthermore, it is a wall piece for a detachable type connecting wall that can be actually constructed and used. For the purpose of
The following configuration will be adopted.

That is, the present invention is an excavating and unloading machine that is suspended in a cantilevered manner from a turret that is rotatably installed on a crane, and the main body of the drive device that forms the upper part of this excavating and unloading machine is installed in a narrow space. A driving chain gear for suspending a chain having a large number of claw-shaped buckets installed at the upper part between steel plates arranged at intervals, and a connecting chain gear provided at the lower end between these steel plates. It is composed of a lock mechanism and a drive device that drives the chain gear, and forms the lower part of the excavation and earth removal machine, and is connected to the lower part of the drive device main body via a lock mechanism provided in the drive device main body. A wall piece steel plate having a converging portion at its lower end, which is a wall piece for a connecting wall that is detachably provided and is disposed oppositely at a narrow interval, and a reinforcing steel member disposed in the longitudinal direction between the wall piece steel plates, and the above-mentioned. A groove forming member for a chain guide provided in the peripheral area between the wall piece steel plates, and a convergent part of the wall piece steel plate are pivoted via a collar, and are inserted into the groove forming member and the cutting strip of the reinforcing steel material. A driven chain gear, which is formed of a single steel plate on which a chain having a large number of claw-shaped buckets is suspended, and has dimensions approximately corresponding to the size of the converging part. This is a structure of a wall piece for a connecting wall that also serves as an excavating and removing machine.

``Function'' Next, to explain the function of the present invention, a chain having a large number of claw-shaped buckets is suspended from a turret that can be rotated by the boom of a crane, and a drive device equipped with a drive device to drive this chain is used. The main body of the device is suspended in a cantilevered manner.

Subsequently, the wall piece for the connection wall is assembled to this suspended drive device main body, and at that time, the wall piece for the connection wall is lifted up by the same crane or another crane.

Then, approach the drive unit that is already suspended, insert the insertion leg provided on the drive unit into the space of the wall piece for the connection wall, and then tighten the locking pin of the lock mechanism provided on the drive unit. By engaging the reinforcing member of the wall piece for the connection wall, the driving device main body and the wall piece for the connection wall are combined.

Thereafter, by suspending the chain having a large number of claw-shaped buckets suspended from the driving chain gear, the chain and the claw-shaped bucket can be suspended from the driving chain gear. Circular movement is possible between the chain gear and the groove forming member provided on the wall piece for the connecting wall and the driven chain gear.

Therefore, after positioning the combined wall piece for the connecting wall on the line of proximity, the driving chain gear is driven to move the chain and the claw-shaped bucket cart around the line of proximity. The earth and sand is excavated by the claw-shaped bucket, and then, as the claw-shaped bucket is moved around, it is conveyed to the ground through the plow section, and is discharged by the claw-shaped bucket.

The excavated soil discharged as described above is then discharged to a location other than the proximity line via a chute (earth discharge means) not shown.

By repeating such operations, the excavation and removal of earth and sand progresses in sequence, and the wall pieces for the connection wall are successively dug into the ground.

In this case, due to the earth pressure resistance acting on the claw-shaped bucket and the chain, the claw-shaped bucket and the chain are temporarily pressed against the driven chain gear. Since the rotational force is applied by the driving chain gear via the chain, the pressure contact remains instantaneously.

Ultimately, therefore, this earth pressure resistance is such that it is absorbed by the rotation of the driven chain gear which is rotated via the circumferential transition of the chain.

Once the wall piece for the connecting wall has been dug to the specified location as described above (usually when the tip of the wall piece for the connecting wall is almost flush with the ground), remove the chain connecting pin. At the same time, the cut chain is detached from the driven chain gear or the groove forming member through the rotation of the driving chain gear in either direction, and the chain is detached from the driven chain gear or the groove forming member. Separate from the wall piece.

Here, a wall piece for earth retaining is buried in a part of the proximity line.

After that, remove the locking pin of the locking mechanism from the reinforcing member of the wall piece for the connection wall, completely cut the wall piece for the connection wall from the drive unit, and leave only the wall piece for the connection wall (earth retaining wall piece). The drive unit is left underground, so-called buried, and only the drive unit, chain, etc. are lifted up and moved to the next proximity line.

Then, as mentioned above, the wall pieces for the next connection wall to the drive unit body are combined, the chain is suspended, etc.
If operations such as moving around the chain, removing soil, then detaching the wall piece for the connection wall, and burying it in a left-behind manner are repeated, the wall piece for the next connection wall will also be left behind on this adjacent line. It will be buried and a retaining wall piece will be constructed.

By repeating the above-described operations one after another, wall pieces for earth retaining are constructed on all the lines of proximity, and finally the earth retaining work is completed.

"Embodiment" An embodiment of the present invention will be specifically described below based on the drawings.

1 is a wall piece for a continuous wall.

This wall piece 1 for a continuous wall is made by installing commercially available wall piece steel plates 3, 3 facing each other at narrow intervals, and this wall piece steel plate 3,
In this example, two reinforcing members 4 made of H-type steel, I-type steel, etc. are provided between the 3 at appropriate intervals, and a groove 5 for a chain guide is provided in the longitudinal peripheral portion 2.
A chain having a groove forming member 6 of shaped steel and a large number of claw-shaped buckets (described later) is wound so as to form a steel groove member 6, and a steel material (commercially available, for example, 6 mm to 9 mm) is wound.
It is composed of a driven chain gear 7 made of a single steel plate of approximately 100 mL.

In addition, when using commercially available steel wall plates 3, 3, as shown in the figure, the lower ends of the steel plates 3, 3 should be converged, and should correspond to and slightly protrude from the peripheral part 2. The groove forming member 6 is provided so as to.

As a result, as shown in FIG. 2, the shape is wide at the upper end and becomes narrower toward the lower end.

A driven chain gear 7 is pivotally attached to the convergent portion of the lower end of the wall piece steel plates 3, 3, and this driven chain gear 7 is provided at the convergent portion of the wall piece steel plates 3, 3. Since the size of this convergence part is
It has approximately the same dimensions and is formed to have a smaller diameter than the drive chain gear described later.

Further, the groove forming member 6 corresponds to the external shape of the wall piece steel plates 3, 3, converges in the converging portion of the wall piece steel plates 3, 3, and is located inside the wall piece steel plates 3, 3. (See Figure 2).

As shown in the figure, this driven chain gear 7 has a groove 26 formed in the groove forming member 6 and reinforcing members 4, 4.
24, 24, and these cuts 26, 24,
The structure is such that the sliding contact with the end surface of the kerf 24 ensures that the thin driven chain gear 7 can oscillate laterally and rotate smoothly.

Further, the driven chain gear 7 is made of steel and is thin, so it is rotatably attached to a shaft 9 provided on a mounting plate 10 via a collar 8.

This prevents the shaft 9 from being cut even when the driven chain gear 7 rotates.

In the figure, 11 is the motor 1 suspended from crane A, etc.
2 (other drive devices are also possible) and a chain guide 13 around the periphery of the drive device body, which has a substantially semi-elliptical shape.
1 is provided with a driving chain gear 14 which is fixed to the output shaft of the motor 12, and at its lower end there is a space for a connecting wall piece 1 extending from the lower end. In the invention, insertion legs 15, 15 are provided, respectively, which are inserted into the wall pieces for the connecting wall.

The tips of the insertion legs 15, 15 are tapered slightly, but this is to ensure that they can be inserted into the wall piece 1 for the connection wall easily and reliably. Further, a pair of cylinders 16 are provided at the lower end of the drive body 11, and piston rods 16a, 16a extend from the drive body 11.

Thereby, the gap D formed between the drive device main body 11 and the wall piece 1 for the connection wall is expanded or contracted, and the tension of the chain 17 suspended therebetween is adjusted.

In the figure, 17 is a chain suspended between the driving chain gear 14 and the driven chain gear 7, as described above, and this chain 17 has claws protruding from the steel wall plates 3, 3, as shown in the figure. A large number of bucket buckets 18 with claws are provided.

Next, to explain the usage state of the present invention, the main body 11 of the drive device, which is equipped with a drive device 12 that drives a chain 17 equipped with a large number of claw-shaped bucket buckets 18, is mounted on a turret that can be rotated by the boom of a crane A. Hang it in a portable manner.

When attaching the wall piece 1 for the connection wall that can be freely combined or detached to the suspended drive device main body 11, first lift the drive device main body 11 with a crane A or the like,
This drive device main body 11 is placed in a suspended state.

After that, use the same crane or another crane to lift up the wall piece for the connection wall and bring it close to the drive device main body 11 that is already suspended, and insert the insertion legs 15, 15 provided on this drive device main body 11 into the connection wall wall. By inserting into the piece 1 and engaging the locking pin of the locking mechanism provided on the drive device body 11 into the reinforcing members 4, 4 of the wall piece 1 for the connection wall, the drive device body 11 and the wall piece for the connection wall are connected. 1 are combined.

Thereafter, a chain 17 having a large number of claw-shaped buckets 18 is suspended between the driving chain gear 14 and the driven chain gear 7.

As a result, the chain 17 and the claw-shaped bucket 18 are connected to the driving chain gear 14, the groove forming member 6 provided on the connecting wall piece 1, and the driven chain gear 7.
Circular transition is possible between (state of Fig. 5A).

Therefore, after positioning the combined connecting wall piece 1 on the proximity line B, the driving chain gear 14
By driving the chain 17 and the claw-shaped bucket bucket 18, the proximity line B
The upper soil is excavated by the claws of the claw-shaped bucket 18, and then, as the claw-shaped bucket 18 moves around, the excavated soil is transported to the ground and discharged from the claw-shaped bucket 18. The excavated soil is discharged to a location outside the proximity line B via a chute (not shown).

By repeating such operations, the earth and sand are excavated and removed in sequence, and the wall pieces 1 for the connecting wall are successively dug into the ground (the state shown in FIG. 5B).

In this case, the claw-shaped bucket 18 and the chain 1
7 is subjected to earth pressure resistance, but as mentioned above, the earth pressure resistance is absorbed by the rotation of the driven chain gear 7 which is rotated through the rotation of the chain 17, and the claw-shaped bucket bucket 18 and the chain 17 Smooth rotation is guaranteed, wear and tear on these members is relatively small, and maintenance is easy.

When the wall piece 1 for the connecting wall has been excavated to a predetermined location as described above (the state shown in Fig. 5 (c)), the connecting pin of the chain 17 is removed, the chain 17 is cut away, and this Cut chain 1
7 is detached from the driven chain gear 7 or the groove forming member 6 through the rotation of the driving chain gear 14 in either direction, and is eventually detached from the wall piece 1 for the connection wall.

After that, the locking pin of the locking mechanism 19 is removed from the reinforcing members 4, 4 of the wall piece 1 for the connection wall, and the wall piece 1 for the connection wall and the drive device main body 11 are completely cut away.
With only the connecting wall piece 1 buried in the ground, the drive device main body 11 is lifted together with the chain 17 having the hook-shaped bucket bucket 18 (the state shown in FIG. 5D).

A wall piece for the connecting wall is buried here.

In this way, the lifted excavator main body 11 and the like are moved onto the next proximity line B.

Then, as mentioned above, the connecting wall piece 1 is joined to the driving device main body 11, the chain 17 is suspended between the driving chain gear 14 and the driven chain gear 7, and the chain 17 is rotated. By repeating operations such as transferring and removing soil, and then burying the wall piece 1 for the connection wall in a left-behind manner, the soil is also placed on this proximity line B.
A wall piece 1 (earth retaining wall piece) for the connection wall is buried in a left-behind manner.

By sequentially repeating the operations detailed above, as shown in Fig. 4, the wall piece 1 for the connection wall is connected to the proximity line B, the so-called earth retaining position, and the earth retaining wall is constructed here. be done.

Incidentally, it is preferable to provide a steel material 32 for connection between the wall pieces 1 for the connection wall.

Further, numeral 31 in the figure is a drain pipe.

Also, between the wall piece steel plates 3 and 3 of the wall piece 1 for the connecting wall
The space between them may be filled with earth and sand on the proximity line B or similar earth and sand for reasons such as strength.

Furthermore, with the present invention, since the earth pressure resistance against the claw-shaped bucket bucket 18 and the chain 17 can be reduced, it is also possible to bury the wall piece 1 for the connection wall of long objects, which was previously impossible. It has become possible to construct earth retaining walls in close proximity to shakumono.

"Effects of the Invention" As described in detail above, the present invention forms the lower end of the wall piece for an underground type connection wall so as to converge, and connects the convergent part to the convergent part via a collar.
Since the configuration is such that the driven chain gears of small diameters that are almost matched are provided, the following effects are obtained.

First of all, it is possible to dig reliably through the claw-shaped bucket provided at the tip of the convergent part and located at the tip of the connecting wall piece, and it is also possible to dig into the ground reliably even without a guide hole. It is possible to dig inside.

Furthermore, when the wall piece for the connection wall is dug into the ground, the earth pressure resistance exerted on the claw-shaped pail-shaped bucket and the chain can be reduced.

Secondly, through the above-mentioned effect, the claw-shaped bucket bucket and the chain can be moved around smoothly, and the wall piece for the connecting wall can be smoothly inserted into the ground.

Thirdly, it enables excavation and smooth circumnavigation using the hook-shaped bucket, which is extremely effective in allowing quick and reliable excavation and construction of wall pieces for connecting walls, speeding up earth retaining wall construction. , it is highly expected that the cost will be reduced.

Fourthly, there is relatively little wear and tear on members such as the claw-shaped bucket and the chain, and maintenance and management thereof is easy.

In addition, this invention is equipped with a single chain, and the driven chain gear attached to this chain is
Since it is made of a single piece of steel, it has the following effects.

First of all, it is the perfect chain gear for mounting on wall pieces for left-behind connecting walls.

Secondly, it is very useful for facilitating production and reducing costs, and is put to practical use as a wall piece for a connection wall that can be left behind.

Thirdly, it greatly helps in reducing the weight of the entire excavating and removing machine.

Fourthly, the space where dirt, pebbles, etc. can get in,
It is between a single chain, or between a single chain and a single driven chain gear, and of course there is less dirt or pebbles getting into it, making for smooth transitions and speeding up work.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a sectional view showing the relationship between the connection wall piece and the drive unit body, and FIG. 2 is an enlarged view of the connection wall piece. Fig. 3 is a sectional view of the main part of Fig. 2 (with some parts omitted), Fig. 4 is a front view with some parts omitted, and Fig. 4 is a cross-sectional view of the main part of Fig. A schematic diagram showing the state, and FIGS. 5A to 5D are schematic diagrams showing the construction process. 1...Wall piece for connection wall, 2...Peripheral part, 3,3
... Wall piece steel plate, 4 ... Reinforcement member, 5 ... Groove, 6
... Groove component, 7 ... Driven chain gear, 8 ...
Collar, 9... Shaft, 10... Mounting plate, 11... Drive device main body, 12... Drive device, 13... Chain guide, 14... Drive chain gear, 15... Insertion leg, 16... ... Cylinder, 16a ... Piston rod, 17 ... Chain, 18 ... Claw-shaped bucket with claw, 19 ... Lock mechanism, 24, 26 ...
Cut strip, 31... Drain pipe, 32... Steel material, A
...Crane, B...Proximity line.

Claims (1)

[Scope of Claim for Utility Model Registration] An excavating and unloading machine that is suspended in a cantilevered manner from a turret that is rotatably installed on a crane, and a drive unit that forms the upper part of the excavating and unloading machine, Steel plates arranged oppositely at narrow intervals, a driving chain gear for suspending a chain having a large number of claw-shaped buckets installed at the upper part between these steel plates, and a connection provided at the lower end between these steel plates. a locking mechanism for the excavation machine, and a drive device for driving the chain gear, which forms the lower part of the excavating earth removal machine; Wall pieces for a connection wall that can be combined or separated are installed opposite each other at narrow intervals, and the lower ends of the wall pieces serve as converging parts, and reinforcing steel members are arranged in the longitudinal direction between the wall pieces. and a chain guide groove forming member provided in the peripheral area between the wall piece steel plates, and a groove member that is pivotally attached to the converging portion of the wall piece steel plate via a collar, and inserted into the groove forming member and the cutting strip of the reinforcing steel material. A driven member is formed of a single steel plate on which a chain having a large number of claw-shaped buckets is suspended, and has dimensions approximately corresponding to the size of the converging portion. A structure of a wall piece for a connecting wall that also serves as an excavation and earth removal machine, consisting of a chain gear.