JP4216652B2 - Method of placing porous concrete on slope and plate compactor used therefor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for placing porous concrete on a slope, a slope or the like (hereinafter collectively referred to as a slope) and a plate compactor used therefor.
[0002]
[Prior art]
As a slope protection work, the pouring of porous concrete is suitable from the viewpoint of penetration of rainwater into the ground and greening.
[0003]
In other words, normal concrete is filled with mortar and cement paste between coarse aggregates. Porous concrete has a small amount of mortar and cement paste, leaving many continuous voids between coarse aggregates. This is because it can be greened by imparting water permeability or filling the voids with soil or the like suitable for plant growth.
[0004]
Conventionally, this kind of porous concrete is manufactured by stirring and mixing all materials such as coarse aggregate, fine aggregate, cement (binder) with a mixer in the plant in the same way as ordinary concrete. Transport to the site.
[0005]
At the slope site, a hopper and a belt conveyor are combined, and porous concrete is placed using a device having a placement chute at the tip (for example, a trade name Telebelt).
[0006]
Moreover, the present applicant has disclosed Patent Document 1 as porous concrete to be placed on a slope.
[0007]
[Patent Document 1]
JP 2002-188131 A [A Porous Concrete Structure for Ecosystem Conservation and an Ecosystem Conservation Structure Using the Porous Concrete Structure]
[0008]
[Problems to be solved by the invention]
Porous concrete has little mortar and cement paste, and the coarse aggregates are in a state of biting each other, so it is poor in fluidity, so it can be placed by pumping with a concrete pump like normal concrete, It cannot be compacted by a vibrator. Also, it cannot be troweled like normal concrete, and it is therefore difficult to finish the surface flat.
[0009]
As described above, porous concrete is inferior in workability compared to ordinary concrete, so that it is difficult to mechanize the work, and the placement of the work has to depend on a lot of work manually. In particular, it is difficult to finish the surface flat, and much labor is required when constructing slopes and large areas.
[0010]
Conventionally, the porous concrete that has been rolled up on the slope is leveled by the back of the backhoe bucket and the plate compactor is manually compacted. However, the leveling is clearly inefficient and compacted. Is a work in a place with a poor foothold, which is also inefficient in work and has a problem with safety.
[0011]
The object of the present invention is to eliminate the inconvenience of the conventional example, and to save labor by mechanization of construction even in a place with a bad foothold on a slope called a slope, so that a long slope can be constructed efficiently and safely. An object of the present invention is to provide a method for placing porous concrete on a slope and a plate compactor used therefor.
[0012]
[Means for Solving the Problems]
According to the first aspect of the present invention, molds are provided on the left and right sides of the placing section , and the molds are raised at the upper ends of the extension pieces , the porous concrete is spread out on the slope, and the left and right ends are individually separated. While placing one end of the leveling roller by the rotating tube body pulled by the wire from the winch on the extension piece for surging, the leveling roller spreads the porous concrete, and then The gist is to compact with a plate compactor pulled by a wire from the third winch.
[0013]
According to the first aspect of the present invention, the porous concrete spread out on the slope can be spread with a wide width and in order from the bottom to the top in an efficient manner using a spreader roller with a rotating tube body. In addition, the rotating tube body of the laying leveling roller pulls the left and right ends with wires from individual winches, so it can be moved by non-human power, and the direction control for bending and tilting can be easily performed by speed control for each winch. it can.
[0014]
After leveling, the plate is compacted with a plate compactor. This plate compactor is not manually pushed as in the past, but is pulled by a wire from the third winch, so it can be rolled safely and efficiently. it can.
[0015]
Furthermore, the rolled-out porous concrete shows a decrease in the rolling compaction height at the plate compactor relative to the leveling height at the leveling roller, but it is possible to perform surfacing by assuming that. .
[0016]
According to a second aspect of the present invention, in the plate compactor that vibrates the compaction plate by the vibration generator and tightens the bottom of the compaction plate, the plate compactor is connected to the vibration generator and the traction wheel body is slidable on the fixed rod. The traction fulcrum for towing with the wire from the winch can be moved laterally , and further, as a lateral movement drive mechanism for the traction wheel body, a screw shaft is provided on the fixed rod so as to be rotatable in parallel. The gist of the invention is that a moving body screwed to the shaft is coupled to the pulling wheel .
[0017]
According to the second aspect of the present invention, the plate compactor is inclined when it is towed with the wire from the winch and may be bent, but the towing fulcrum can be moved laterally, that is, in the lateral direction. By making it possible to move freely, it is possible to correct the direction by moving the tow fulcrum and facing the opposite side in such a curved traveling.
[0018]
According to the third aspect of the present invention, the compaction plate is provided with a base for installing the vibration generator at the center thereof, and the vibration exciter is installed. The base supports the vibration generator with an inclination with respect to the compaction plate. The gist is to do.
[0019]
When the plate compactor is used on a slope, it naturally becomes inclined according to the slope angle as a whole, and a backflow of engine oil or the like may occur in the vibration generator, and normal operation may not be continued. According to the third aspect of the present invention, since the vibration generator is supported with an inclination with respect to the rolling plate, the portion of the vibration generator can always maintain an angle close to the horizontal with respect to the inclined rolling plate. In addition, it is possible to perform stable operation by ensuring the center of gravity and the like of oil circulation and the like.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 to 4 are plan views showing respective steps in one embodiment of a method for placing porous concrete on the slope of the present invention. As shown in FIG. 1, a hopper 2a, a belt conveyor 2b, The porous concrete 3 is rolled out by a rolling-out device 2 (trade name Telebelt) having a placement chute (not shown) at the tip (first step). In the figure, 4 is a track mixer.
[0021]
When the porous concrete 3 is rolled out, the mold 5 is provided on the left and right sides of the placement section. As shown in FIG. 5, the mold 5 is made of, for example, a wooden plate, and the height thereof is the same as that after rolling. The required height (thickness) of the porous concrete 3 is set, and an extension piece 5a for surplus build-up is raised above it at the upper end. As an example, the extending piece 5a for surfacing is a thin plate projecting about 2 cm along the inner end of the mold 5 and can be removed after a leveling operation described later. Note that the formwork 5 is not limited to wooden, and can be made of plastic, steel, or the like.
[0022]
In FIG. 1, reference numeral 6 denotes a leveling roller, which, as shown in FIG. 6, is provided with a handle 6c in which a motor 6b for rotation driving is incorporated at the end of a rotating tube body 6a made of steel. .
[0023]
A hydraulic pump unit 15 is connected to the motor 6b via a hydraulic hose 14 (see FIG. 2). Further, an operation unit 6d using switches is attached to the handle 6c, and the operator operates the operation unit 6d while holding the handle 6c.
[0024]
Regarding the installation of the leveling roller 6, the left and right ends of the rotating tube body 6a are pulled by the wires 7a and 8a from the individual winches 7 and 8 installed on the shoulders. In addition, the leveling work by the leveling roller 6 is performed upward from the lowest position of the placing section.
[0025]
When the length of the rotating tube body 6a of the spreader roller 6 is not sufficient for the placement section width, the construction is performed in two steps. A leveling roller rail 9 for supporting one end of the rotating tube body 6a is provided at an intermediate position of the placement section width so that one end of the rotating tube body 6a is supported and only the other end is on the mold 5 (exactly Is placed on the extension piece 5a for surfacing (see FIGS. 2 and 5).
[0026]
The rotating tube body 6a of the spread leveling roller 6 is pulled upward by the wires 7a and 8a from the winches 7 and 8, and the porous concrete 3 is flattened while rotating, but either the left or right side is first. If the whole is slanted, the speed of the winches 7 and 8 is adjusted so that the lower wire 7a or 8a is quickly wound up so that the rotating tube body 6a can be kept in a state of being always directly beside. Thus, posture control can be performed.
[0027]
In addition, it is not completely excluded that manual work using a work tool such as a rake is involved when the porous concrete 3 is leveled by the leveling roller 6.
[0028]
Further, the handle 6c of the spread leveling roller 6 may be omitted so that it can be operated remotely.
[0029]
FIG. 2 shows the leveling step (second step) of the porous concrete 3 by the leveling roller 6. When this step is completed, the plate is compacted by the plate compactor 10 as shown in FIG. 3 steps).
[0030]
The plate compactor 10 to be used first will be described. As shown in FIGS. 7 and 8, a rolling plate compactor as a compacting machine that uses centrifugal force for compaction in addition to its own weight, and a compacting plate that directly contacts the compaction surface. 11 is mounted with an engine-driven vibration device 12, and the vibration device 12 vibrates the compaction plate 11, thereby compacting the compaction surface.
[0031]
The rolling plate 11 is formed by bending the front and rear edges of the metal plate into a curved shape to form a warp, and has a rectangular shape or a substantially rectangular shape with a width of about 2 to 3 times the width in the traveling direction. It was.
[0032]
The rolling plate 11 is provided with a pedestal 13 for installing the vibration generator 12 at the center thereof, and the vibration generator 12 is installed at the center of the pedestal 13. I put it out.
[0033]
The pedestal 13 is inclined so as to increase gradually from the front side to the rear side of the plate compactor 10, and as a result, the vibration generating device 12 supported by the pedestal 13 is also inclined with respect to the rolling plate 11 (about 10 °). It is supported with. That is, the engine 12a and the like of the vibration generator 12 can maintain a relatively close angle and maintain a horizontal state even when the rolling plate 11 is inclined so that the front side is raised on the slope 1. In addition, this angle can be adjusted according to the inclination of the slope 1 to be constructed.
[0034]
This plate compactor 10 is provided with a pulling wheel body 17 with a built-in slide bearing as a pulling fulcrum (shackle coupling portion) for pulling with a wire from the winch. A fixed rod 18 is provided in a lateral direction so as to be connected to the vibration generator 12, and the traction wheel body 17 is fitted on the fixed rod 18 and is slidable.
[0035]
Further, as a lateral movement drive mechanism for the pulling wheel body 17, a screw shaft 19 using a trapezoidal screw is provided on the fixed rod 18 so as to be rotatable in parallel, and a moving body 20 using a flange nut screwed to the screw shaft 19 is used for pulling. The screw shaft 19 is coupled to the ring body 17 so that the screw shaft 19 can be rotationally driven by using the engine 12a of the vibration generator 12 or the like. In the illustrated example, the sprocket 21a provided at the end of the screw shaft 19 and the sprocket 21b of the deceleration transmission mechanism 22 connected to the engine 12a are connected by the chain 23, but the present invention is not limited to this.
[0036]
In this way, the surface of the porous concrete 3 after the leveling with the leveling roller 6 is set to the surface position excluding the rising portion of the extension piece 5a for the surfacing of the mold 5 with the plate compactor 10. Consolidate.
[0037]
The plate compactor 10 (for example, a reduction ratio of 101: 1 and a moving speed of about 20 mm / second) moves the slope 1 from the bottom to the top by being pulled by the wire 24b from the roller 24a of the third winch 24. (Refer to FIG. 3), however, when a bend occurs in the traveling direction, the traction fulcrum can move laterally by rotating the screw shaft 19 and moving the traction wheel body 17, thereby correcting the direction. It becomes possible. This lateral movement of the traction fulcrum is preferably performed by remote control.
[0038]
When the porous concrete 3 has been spread, spread, and compacted, it moves to the next span as shown in FIG. 4 (fourth step). The leveling roller rail 9 is removed, and the extension piece 5a for surfacing is placed on the left casting surface of the entire casting section, and the right half is similarly constructed.
[0039]
【The invention's effect】
As described above, the method of placing porous concrete on the slope of the present invention and the plate compactor used for it are designed to save labor by mechanization of construction even in places where the foot slope is bad, such as long slopes. Can be constructed efficiently and safely.
[Brief description of the drawings]
FIG. 1 is a plan view of a first step showing an embodiment of a method for placing porous concrete in a slope of the present invention.
FIG. 2 is a plan view of a second step showing an embodiment of a method for placing porous concrete according to the slope of the present invention.
FIG. 3 is a plan view of a third step showing an embodiment of a method for placing porous concrete according to the slope of the present invention.
FIG. 4 is a plan view of a fourth step showing one embodiment of a method for placing porous concrete according to the slope of the present invention.
FIG. 5 is an explanatory view showing an installation formwork.
FIG. 6 is a perspective view of a spread leveling roller.
FIG. 7 is a perspective view showing an embodiment of a plate compactor used in the method for placing porous concrete according to the slope of the present invention.
FIG. 8 is a plan view showing an embodiment of a plate compactor used in the method for placing porous concrete according to the slope of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Slope 2 ... Rolling-out apparatus 2a ... Hopper 2b ... Belt conveyor 3 ... Porous concrete 4 ... Track mixer 5 ... Formwork 5a ... Extension piece for surging 6 ... Spreading leveling roller 6a ... Rotating tube body 6b ... Motor 6c ... handle 6d ... operation unit 7, 8 ... winch 7a, 8a ... wire 9 ... rail for leveling roller 10 ... plate compactor 11 ... rolling plate 12 ... vibration generator 12a ... engine 13 ... pedestal 14 ... hydraulic hose 15 ... Hydraulic pump unit 17 ... Torring wheel 18 ... Fixing rod 19 ... Screw shaft 20 ... Moving body 21a, 21b ... Sprocket 22 ... Deceleration transmission mechanism 23 ... Chain 24 ... Third winch 24a ... Roller 24b ... Wire

Claims (3)

Rotating tubes with left and right molds placed on the left and right sides of the casting section, with an extension piece for surfacing raised at the upper end , porous concrete spread out on the slope, and left and right ends pulled by wires from individual winches While placing one end of the leveling roller on the body on the extended extension piece, level the spread concrete with the leveling roller, and then use the wire from the third winch A method for placing porous concrete on the slope, characterized by compacting with a towing plate compactor. In a plate compactor that vibrates the compaction plate with a vibration generator and clamps the bottom of the compaction plate, it is connected to the vibration generator, and a tow ring is slidably provided on a fixed rod and pulled by a wire from the winch. A traction fulcrum for moving the traction wheel, and as a lateral movement drive mechanism for the traction wheel body, a screw shaft is rotatably provided in parallel with the fixed rod, and a moving body screwed into the screw shaft is provided A plate compactor used for a method of placing porous concrete on a slope, characterized by being connected to a tow ring .   3. The rolling plate according to claim 2, wherein the rolling plate is provided with a pedestal for installation of the vibration generator at the center thereof and the vibration device is installed, and the pedestal supports the vibration generator with an inclination with respect to the compression plate. Plate compactor used for the construction method of porous concrete.

Images