JP2005113491A - Block mat laying apparatus and laying method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a block mat laying apparatus and a laying method capable of quickly arranging a block mat accurately at a predetermined place while ensuring safety.
SOLUTION: In a block mat laying device 1 for laying a block mat 6 having a plurality of concrete blocks 62 fixed on the surface of a sheet member 61, a frame 3 suspended by a crane, and the frame 3 A clamping device 5A provided on one end side for clamping the block mat 6 and a clamping device 5B provided on the other end side of the frame body 3 for clamping the block mat 6 are provided, and the clamping device 5A is attached to the frame body 3 Can be moved up and down.
[Selection] Figure 2

Description

  TECHNICAL FIELD The present invention relates to a block mat laying apparatus and a laying method for laying a block mat in a river, a harbor, a creation site, or the like.

Conventionally, a construction method using a block mat has been adopted in order to protect the revetment and slopes in field work in rivers, harbors, creation sites and the like.
Here, the block mat is a concrete block attached on a sheet. For example, a large number of concrete blocks are arranged at intervals on a sheet having water permeability and flexibility. Is known (see Patent Document 1).

  As such a block mat laying device, a clamping device for clamping the block mat is directly attached to both ends of a long H-shaped steel, and the end portions of the block mat are clamped by these two clamping devices. A construction thing is known (for example, refer to patent documents 2).

When laying such a block mat on a slope, for example, first, as shown in FIG. 8 (A), one clamping device 11B is placed at the upper end position of the laying portion above the slope [FIG. See A)].
In addition, since the space | interval of clamping apparatus 11A, 11B is usually shorter than the length of the block mat 12, the block mat 12 will be in the state which bent and drawn the circular arc.

Next, the entire laying apparatus is lowered to a predetermined position while the block mat 12 is sandwiched. Then, the block mat 12 is placed on the slope, and the sandwiching devices 11A and 11B are also placed [see FIG. 8B].
At this time, the slope is in a state where the weight of the entire laying device including the block mat 12 is entrusted (ie, a state in which the weight is applied).
Naturally, the H-shaped steel is also placed along the slope.

Thereafter, the clamping by the clamping devices 11A and 11B attached to both ends of the H-shaped steel is released.
Finally, the laying of one block mat 12 is completed by moving the clamping devices 11A and 11B to their original positions.
Hereinafter, by repeating such a procedure, a large number of block mats 12 are laid on the entire slope.

Japanese Patent No. 2972963, Column 7

Japanese Patent Laid-Open No. 52-149806 Fig. 1

However, in the laying method of the block mat 12 as in the above-described prior art (Patent Document 2), the weight of the sandwiching devices 11A and 11B and the block mat 12 may be several tons in total. A large component force that tends to fall along the slope is generated, and the sandwiching devices 11A and 11B and the block mat 12 may become the same body and slide down along the slope.
This tendency is particularly strong when the inclination angle is large.

For this reason, the block mat 12 must be lifted again by the sandwiching devices 11A and 11B and placed at an accurate position, which is extremely troublesome and has poor work efficiency.
Furthermore, fine adjustment of positioning was impossible.
Moreover, when releasing the clamping of the block mat 12 by the clamping devices 11A and 11B attached to both ends of the H-shaped steel, the H-shaped steel is in an inclined state because it is placed along the slope.

  Therefore, if the block mat 12 is released from the lower clamping devices 11A and 11B, a phenomenon that the H-shaped steel itself including the clamping devices 11A and 11B jumps up instantaneously is extremely dangerous for the operator [FIG. )reference].

Thus, in the conventional construction method, it is necessary to move up and down the entire laying apparatus including a long H-shaped steel for construction, and fuel consumption (or power consumption) increases and an operator who operates the crane (usually from a block mat) It is necessary to have considerable skill for being at a position several meters to several tens of meters away.
In addition, the phenomenon that the long H-shaped steel springs up is extremely dangerous for the operator.

The present invention has been made on the basis of such a technical background, and has been made to overcome the above-described problems of the prior art.
That is, an object of the present invention is to provide a block mat laying apparatus and a laying method capable of quickly and accurately arranging a block mat at a predetermined place while ensuring safety.

  The block mat laying device according to claim 1 is a block mat laying device for laying a block mat in which a plurality of stone materials are fixed on the surface of a sheet member. One end side clamping portion provided on one end side of the suspended member and sandwiching the block mat; and another end side clamping portion provided on the other end side of the suspended member and sandwiching the block mat; , And the one end side clamping portion is configured to be movable up and down with respect to the suspended member.

  The block mat laying device according to claim 2 is a block mat laying device for laying a block mat in which a plurality of stone materials are fixed on a surface of a sheet member. One end side clamping portion provided on one end side of the suspended member and sandwiching the block mat; and another end side clamping portion provided on the other end side of the suspended member and sandwiching the block mat; The one end side clamping portion and the other end side clamping portion are configured to be movable up and down with respect to the suspended member.

  A block mat laying device according to a third aspect is the block mat laying device according to the first aspect, wherein the lifting and lowering of the one end side clamping portion is performed by winding and lowering a wire.

  The block mat laying device according to claim 4 is the block mat laying device according to claim 2, wherein at least one of the one-end-side holding portion and the other-end-side holding portion is moved up and down. And by lowering.

  The block mat laying device according to claim 5 is the block mat laying device according to claim 3 or 4, wherein the wire rod is wound and unwound by a chain block.

  The block mat laying device according to claim 6 is the block mat laying device according to claim 1 or 2, wherein the suspended member is stably suspended at four locations. It is characterized by.

  The laying method of the block mat according to claim 7 is a laying method of the block mat for laying the block mat on the inclined construction surface, and one end side and the other end side of the rectangular block mat are Clamped by one end side clamping portion and the other end side clamping portion provided in the suspended member, then lifted the suspended member and moved the bent block mat to the laying location, The one end side clamping part is arranged to be positioned below the inclined construction surface, and then the suspended member is lowered until the other end side clamping part comes close to or abuts the construction surface, Next, the one end side clamping portion located on the lower side of the inclined construction surface is lowered with respect to the suspended member, and most of the bent block mat is placed on the construction surface, Next, the one end side After sandwiching member is lowered until close to or abuts on the working surface, characterized in that to release the block mat from said one end side clamping portion and the other end holding portions.

  The laying method of the block mat according to claim 8 is a laying method of the block mat for laying the block mat on an inclined construction surface, wherein one end side and the other end side of the rectangular block mat are Clamped by one end side clamping portion and the other end side clamping portion provided in the suspended member, then lifted the suspended member and moved the bent block mat to the laying location, The one end side clamping part or the other end side clamping part is arranged above a predetermined position of the inclined construction surface, and then the suspended member is lowered to a predetermined height position, and then the suspended object While maintaining the lowering member at a predetermined height position, the one end side holding part and the other end side holding part are lowered while adjusting each other, and most of the block mat is placed on the construction surface, The one end side clamping portion and When a serial other end nipping portion is close to or in contact with the construction surface, characterized in that to release the block mat from said said one end clamping portions other end holding portions.

  In addition, as long as the objective of this invention is met, the structure which combined the said claim suitably is also employable.

The laying device of the present invention includes a suspended member suspended by a crane, one end side clamping portion that is provided on one end side of the suspended member and sandwiches the block mat, and the other end side of the suspended member The other end side clamping portion that clamps the block mat is provided, and the one end side clamping portion is configured to be movable up and down with respect to the suspended member. There is no extreme jumping phenomenon, fine adjustment of positioning is easily possible, construction is also efficient and safe.
In addition, if both the one-end-side clamping part and the other-end-side clamping part can be raised and lowered with respect to the suspended member, the construction efficiency can be improved more than when only one of them can be raised and lowered. Can do.

On the other hand, as the laying method of the present invention, one end side and the other end side of the rectangular block mat are sandwiched between the one end side sandwiching portion and the other end side sandwiching portion provided in the suspended member, Lift the suspended member, move the block mat in the bent state to the laying location, and then place the one end side clamping part so that it is located below the inclined construction surface. Lower the end-side clamping part until it is close to the construction surface, lower the one-side clamping part located on the lower side of the inclined construction surface with respect to the suspended member, and construct most of the bent block mat By adopting a configuration in which the one end side and the other end side of the block mat placed on the surface and floating from the construction surface are released from the one end side holding portion and the other end side holding portion, There is no extreme jumping phenomenon of the suspended member and the positioning is fine. Settling is easily possible, and the construction also efficient and also safer.
Moreover, the laying apparatus and the laying method of the present invention can be applied to various shape surfaces such as an inclined surface and a surface straddling a horizontal surface and an inclined surface.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First embodiment]
FIG. 1 shows a block mat laying apparatus according to a first embodiment of the present invention. The block mat laying device 1 includes a support frame 3 that is a suspended member that is suspended by a crane, a clamping device 5A that is a one-end-side clamping portion provided on one end side thereof, and other components provided on the other end side. And a clamping device 5B which is an end-side clamping unit.

The holding device 5 </ b> A can be moved up and down with respect to the support frame 3.
First, the support frame 3 is formed by a long beam 3a and a short beam 3b in the longitudinal direction from the viewpoint of reducing the weight as much as possible.
The support frame 3 is stably suspended by the wire 7 at two positions of the long beam 3a, that is, at a total of four positions, so that the support frame 3 is maintained so as not to tilt as much as possible in the front, rear, left and right directions. Has been.

The short beam 3b on one side of the support frame 3 is provided with a pair of chain blocks 9A, and the clamping device 5A is supported at two locations by the chain 9A1 which is a wire rod provided in each chain block 9A. It is suspended by.
In this chain block 9A, the chain 9A1 is usually wound or unwound by operating a remote controller 9A2 that is wireless or lined with it.

The clamping device 5A includes a rectangular clamping frame 5A1 into which a block mat can be inserted, and a pressing body 5A2 that can press against the lower side of the clamping frame 5A1.
The pressing body 5A2 can be moved up and down by rotating a handle 5A3 (having a female screw) having a screw shaft screwed into the upper side portion.

Therefore, if the end of the block mat is inserted between the pressing body 5A2 and the lower side of the holding frame 5A1, and the handle 5A3 is rotated in this state, the block mat can be accurately held by the holding device 5A. it can.
On the other hand, the holding device 5B is suspended at two places on the short beam 3b on the other side of the support frame 3.
This clamping device 5B also has the same structure as the above-described clamping device 5A, and can accurately clamp the end portion of the block mat.

FIG. 2 shows a state in which the block mat 6 is attached to the block mat laying apparatus 1 of FIG.
Here, a known block mat is used as the block mat 6.
The block mat 6 includes a sheet member 61 and a number of concrete blocks 62 attached so as to be arranged in alignment on the sheet member 61.

Naturally, the block mat 6 to which a large number of natural stones are attached in addition to the concrete block 62 is also applicable.
At both ends of the block mat 6, there is a region where the concrete block 62 is not attached, and both ends of the block mat 6 are sandwiched by the sandwiching devices 5A and 5B using this region.

That is, the end portion of the block mat 6 is inserted between the pressing body 5A2 and the lower side portion of the holding frame body 5A1, and the pressing body 5A2 is pushed down by operating the handle 5A3 so that the block mat 6 is pinched accurately. Can be pinched.
Incidentally, when the block mat 6 is clamped by the clamping devices 5A and 5B, the deflection amount is adjusted by changing the clamping position of the block mat 6.

When the construction surface is a slope other than a flat surface, for example, the laying length of the block mat 6 is simply longer than the distance between the sandwiching device 5A and the sandwiching device 5B, and varies depending on the degree of inclination.
Therefore, it is necessary to measure the length of the construction surface on which the block mat 6 is laid in advance and to adjust the length of the block mat 6 existing between the clamping device 5A and the clamping device 5B to the length of the construction surface. is there.

Now, a method for laying the block mat 6 on the inclined construction surface will be described step by step.
FIG. 3 is a schematic diagram illustrating a procedure for laying the block mat 6 on the slope 4 a made of the embankment 4 according to the process.
In laying the block mat 6 on the slope 4a, the block mat 6 is first held and suspended by the block mat laying device 1.

Then, the support frame 3 is leveled, and in this state, one clamping device 5B is disposed at the position of the upper end 4b of the portion to be laid [see FIG. 3 (A)].
Next, the support frame body 3 is lowered until the holding device 5B on the inclined side approaches or comes into contact with the inclined surface 4a [see FIG. 3B].

  Next, the block mat 6 is gradually laid along the slope while operating the remote controller 9A2 to lower the chain 9A1 and lower the clamping device 5A far from the slope 4a.

In this case, the operator pushes the chain 9A1 forward, backward, left and right, so that the block mat 6 moves, so that the operator can easily position the portion to be laid and work efficiency is good.
Eventually, most of the block mat 6 is laid on the slope 4a (see FIG. 3C).
When the clamping device 5A approaches or comes into contact with the inclined surface 4a, the end of the block mat 6 is released from the clamping device 5A.
And the edge part of a block mat is open | released also from the holding apparatus 5B.
In order to prevent the block mat 6 from slipping down, it is preferable to fix the end of the block mat on the higher side of the clamping device 5B with an anchor just in case.
Since the support frame 3 is horizontal, there is no danger that the clamping device 5A jumps up as in the prior art.

Finally, the laying of one block mat 6 is completed by raising the support frame 3 and the clamping devices 5A and 5B by lifting the crane or the chain block 9A and returning the block mat laying device 1 to the original position [ See FIG. 3D].
Hereinafter, by repeating such a procedure, a large number of block mats 6 are laid on the entire slope.

[Second Embodiment]
FIG. 4 shows a block mat laying apparatus according to the second embodiment of the present invention.
In the first embodiment, only the clamping device 5A can be moved up and down, whereas in this block mat laying device 1A, the clamping devices 5A and 5B are suspended from the chain blocks 9A and 9B having the chains 9A1 and 9B1. Therefore, it can be moved up and down.

FIG. 5 is a schematic diagram illustrating a procedure for laying the block mat 6 on the slope 4 a made of the embankment 4 according to the process.
In laying the block mat 6 on the slope 4a, first, the block mat 6 is sandwiched and suspended by the block mat laying device 1A.

The support frame 3 is leveled, and in this state, one clamping device 5B is disposed at the position of the upper end 4b of the portion to be laid (see FIG. 5A).
Next, the block mat laying device 1A is lowered as it is to such a height that the block mat 6 does not contact the slope 4a [see FIG. 5B].
In this state, the remote controller 9A2 is operated to lower the chains 9A1 and 9B1 and lower the holding device 5A and the holding device 5B while adjusting each other, and the block mat 6 is gradually grounded along the slope. I will do it.

In this case, it is important that the horizontal support frame 3 is not shaken by adjusting the descending speed and length of the clamping devices 5A and 5B so that the support frame 3 is as horizontal as possible. is there.
Positioning in the front-rear and left-right directions can also be easily finely adjusted by the operator holding the chains 9A1 and 9B1 and moving the block mat 6, thereby shortening the working time.

Eventually, the clamping devices 5A and 5B come close to or abut against the inclined surface 4a, and the block mat 6 is laid on the inclined surface 4a (see FIG. 5C).
In this state, the end of the block mat 6 is released from the clamping devices 5A and 5B.
Here, as described above, when the block mat 6 is removed from the clamping device 5B on the slope side, it is preferable that the ground is fixed with an anchor.

  Finally, the laying of one block mat 6 is completed by raising the support frame 3 and the clamping devices 5A and 5B by lifting the crane and the chains 9A1 and 9B1 and returning the block mat laying device 1A to the original position. [See FIG. 5D].

Hereinafter, by repeating such a procedure, a large number of block mats 6 are laid on the entire slope.
Thus, according to the laying method of this invention, the construction efficiency with respect to the slope 4a becomes good, and there is no danger in operation.

(Laying across the horizontal surface and slope)
Next, a method for laying the block mat 6 from the horizontal surface 4c to the slope 4a will be described.
FIG. 6 is a schematic diagram illustrating a procedure for laying the block mat 6 on the surface formed by the horizontal surface 4c and the inclined surface 4a for each process.

In laying the block mat 6 on such a surface, first, the support frame 3 is leveled, and in this state, one clamping device 5B is disposed at the position of the upper end 4b of the planned laying portion [FIG. See A)].
Next, the block mat laying apparatus 1A is lowered as it is to such a height that the block mat 6 does not contact the slope 4a [see FIG. 6B].
In this state, the remote controller 9A2 is operated to lower the holding device 5A and the holding device 5B.

In this case, the block mat 6 is gradually placed on the slope while adjusting the length of the suspended chains 9A1 and 9B1 so that the support frame 3 is as horizontal as possible.
Eventually, the clamping devices 5A and 5B come close to or abut against the inclined surface 4a, and the block mat 6 is laid on the inclined surface 4a (see FIG. 6C).
In this state, the end of the block mat 6 is opened from the clamping devices 5A and 5B.
Since the support frame 3 is horizontal, the clamping device 5A does not jump up as in the prior art.

Finally, the support frame 3 and the clamping devices 5A and 5B are raised by lifting the crane and the chains 9A1 and 9B1 to return the block mat laying device 1A to the original position, thereby laying one block mat 6 in place. End [see FIG. 6D].
Hereinafter, by repeating such a procedure, a large number of block mats 6 are laid on the entire slope.

When the conventional block mat laying device is used, if the block mat laying device 1A is deposited on the inclined surface 4a and the block mat 6 is removed from the clamping device, the block mat 6 falls to the horizontal surface 4c. It is dangerous because it may cause a jump.
In the present invention, the block mat 6 can be accurately grounded by winding the chain 9B1 around the horizontal surface 4c.

(Laying on a mountain-shaped slope)
Next, a method for laying the block mat 6 on the mountain-shaped slope 4a formed with a high central portion will be described.
FIG. 7 is a schematic diagram for explaining the procedure for laying the block mat 6 on the mountain-shaped slope 4a formed with a high central part for each process.

  In laying the block mat 6 on such a mountain-shaped slope 4a having a high central portion, the block mat 6 is first held and suspended by the block mat laying device 1A.

The support frame body 3 is leveled, and in this state, one clamping device 5B is arranged at the position of one end of the portion to be laid (see FIG. 7A).
Next, the support frame 3 is lowered as it is to such a level that the block mat 6 comes into contact with the slope 4a including the top of the mountain (see FIG. 7B).
In this state, the remote controllers 9A2 and 9B2 are operated to lower the clamping devices 5A and 5B.

Eventually, the clamping devices 5A and 5B come close to or abut against the inclined surface 4a, and the block mat 6 is laid on the inclined surface 4a (see FIG. 7C).
In this state, the end of the block mat 6 is opened from the clamping devices 5A and 5B.
Since the support frame 3 is horizontal, the clamping device 5A does not jump up as in the prior art.

Finally, the laying of one block mat 6 is completed by raising the support frame 3 and the clamping devices 5A and 5B by lifting the crane and the chains 9A1 and 9B1 and returning the block mat laying device 1A to the original position. [See FIG. 7D].
Hereinafter, by repeating such a procedure, a large number of block mats 6 are laid on the entire slope.

Thus, according to the laying method of this invention, the construction efficiency with respect to the slope 4a becomes good, and there is no danger in operation.
When the conventional laying device is used, the block mat 6 is removed from this position because the support frame 3 comes into contact with the top of the mountain and cannot be lowered.
Then, both end portions of the block mat 6 fall on the slope 4a, and the block mat 6 is damaged by the large impact, or the embankment 4 collapses.
Moreover, it is extremely dangerous for workers.

Although the present invention has been described above, the present invention is not limited to the embodiments, and various modifications can be made.
For example, the support frame 3 may have a structure that can suspend the holding devices 5A and 5B in a well-balanced manner.

Further, the holding frame 3 may be any as long as it can fix both ends of the block mat 6, and for example, clamping means using a link mechanism or a hydraulic mechanism can be employed.
As the chain block, any chain block may be used as long as it can raise and lower the clamping part by winding or lowering a chain or other wire.

  In addition, the timing of raising and lowering the clamping part (clamping device) by the chain block is not limited to the procedure described in each embodiment described above, as long as safety and speed at the time of construction are guaranteed, A variety of different procedures are possible.

It is explanatory drawing which shows the laying apparatus of the block mat which concerns on 1st embodiment of this invention. It is explanatory drawing which shows the state by which the block mat was attached to the laying apparatus of the block mat of FIG. It is explanatory drawing which shows a series of processes in the case of laying a block mat on a slope. It is explanatory drawing which shows the laying apparatus of the block mat which concerns on 2nd embodiment of this invention. It is explanatory drawing which shows a series of processes in the case of laying a block mat on a slope. It is explanatory drawing which shows a series of processes in the case of laying a block mat straddling a horizontal surface and a slope. It is explanatory drawing which shows a series of processes in the case of laying a block mat on a mountain-shaped slope. It is explanatory drawing which shows a series of processes in the case of constructing the conventional block mat.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,1A Block mat laying device 3 Frame 3a Long beam 3b Short beam 4 Filling 4a Slope 4b Upper end 4c Horizontal surface 5A, 5B Holding device 5A1 Holding frame 5A2 Pressing body 5A3 Handle 6 Block mat 61 Sheet member 62 Concrete block 7 Wire 9 , 9B Chain block 9A1, 9B1 Chain 9A2, 9B2 Remote controller 11A, 11B Holding device 12 Block mat

Claims (8)

In a block mat laying device for laying a block mat in which a plurality of stones are fixed on the surface of a sheet member,
A suspended member suspended by a crane;
One end side clamping portion that is provided on one end side of the suspended member and clamps the block mat;
Provided at the other end side of the suspended member, the other end side clamping portion for clamping the block mat,
Is provided,
The block mat laying device characterized in that the one end side clamping portion is movable up and down with respect to the suspended member. In a block mat laying device for laying a block mat in which a plurality of stones are fixed on the surface of a sheet member,
A suspended member suspended by a crane;
One end side clamping portion that is provided on one end side of the suspended member and clamps the block mat;
Provided at the other end side of the suspended member, the other end side clamping portion for clamping the block mat,
Is provided,
The block mat laying device characterized in that the one end side clamping portion and the other end side clamping portion are movable up and down with respect to the suspended member. In the block mat laying device according to claim 1,
The block mat laying apparatus is characterized in that raising and lowering of the one end side clamping portion is performed by winding and lowering a wire. In the block mat laying device according to claim 2,
A block mat laying device, wherein raising and lowering of at least one of the one end side holding portion and the other end side holding portion is performed by winding and lowering a wire. In the block mat laying device according to claim 3 or 4,
A block mat laying device, wherein the wire rod is wound and unwound by a chain block. In the block mat laying device according to claim 1 or 2,
The apparatus for laying a block mat, wherein the suspended member is stably suspended at four locations. The laying method of the block mat according to claim 7 is:
A block mat laying method for laying a block mat on an inclined construction surface,
The one end side and the other end side of the rectangular block mat are sandwiched between one end side sandwiching portion and the other end side sandwiching portion provided on the suspended member,
Next, lift the suspended member, move the block mat in a bent state to the laying place,
Next, the one end side clamping part is arranged so as to be located on the lower side of the inclined construction surface,
Next, the suspended member is lowered until the other end side clamping portion is close to or in contact with the construction surface,
Next, the one end side clamping portion located on the lower side of the inclined construction surface is lowered with respect to the suspended member, and most of the bent block mat is placed on the construction surface,
Next, the block mat laying device is configured to release the block mat from the one end side sandwiching portion and the other end side sandwiching portion when the one end side sandwiching portion is lowered until it approaches or contacts the construction surface. . The laying method of the block mat according to claim 8 is:
A block mat laying method for laying a block mat on an inclined construction surface,
The one end side and the other end side of the rectangular block mat are sandwiched between one end side sandwiching portion and the other end side sandwiching portion provided on the suspended member,
Next, lift the suspended member, move the block mat in a bent state to the laying place,
Next, the one end side clamping part or the other end side clamping part is arranged above a predetermined position of the inclined construction surface,
Next, the suspended member is lowered to a predetermined height position,
Next, while maintaining the suspended member at a predetermined height position, the one end side holding portion and the other end side holding portion are lowered while adjusting each other, and most of the block mat is placed on the construction surface. Place
Next, when the one end side holding portion and the other end side holding portion are close to or in contact with the construction surface, the block mat is released from the one end side holding portion and the other end side holding portion. Block mat laying device.

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