JPH0941326A - Side wall cutting falling water protector of elevated highway - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent cooling water during cutting operation of a side wall from falling down or being scattered by forming a side surface as L-shaped so as to be opposed to the outside surface of a side wall of an elevated highway and forming the cross section of a water receiver as in L-shaped so that an opening side may be joined with an exterior wall of the side wall and a floor area. SOLUTION: The shape of a side wall surface is L-shaped so that it may be opposed to a side wall 4 of an elevated highway 1 and the outside surface of a floor surface 3, thereby forming an L-shaped water receiver in cross section so that an opening side may be joined with the side wall 4 and an exterior wall of the floor surface 3. This water receiver 8 is laid out in a spot which is scheduled to be cut off. The opening side is arranged to be Joined with the side wall 4 and the exterior wall of the floor 3 and fixed in such a joined state, thereby supporting the water receiver 8 with an arm 7 extending from a crane car. As a result, the water receiver 8 receives falling water or scattered water on the outside surface of the side wall 4 out of cooling water supplied to a cutting area during cutting work by a diamond blade 5 of a concrete cutter car so that the water may be collected on the bottom of a floor opposed area 11 where the water is drained to an outside drain facility by way of a hose 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drop protector for cutting a sidewall of an elevated road, which does not cause cooling water to drop or scatter downward when cutting a sidewall of an elevated road.

[0002]

2. Description of the Related Art At present, there are many elevated expressways that have been built around urban areas almost 30 years after construction, and these expressways have concrete floors and side walls. It is becoming obsolete and needs to be rebuilt. During this restructuring work, it is necessary to dismantle and remove the concrete floor and side walls, but due to the problems of vibration and noise during construction in urban areas, the diamond blades already used for cutting and dismantling reinforced concrete structures. A cutting method using a diamond tool with a diamond wire saw is suitable, and it is planned to cut and dismantle the concrete floor and side walls of the elevated expressway by this method.

[0003]

When cutting a reinforced concrete structure using the above diamond tool,
Since the cutting part becomes hot and the wear and damage of the tool become severe, it is necessary to discharge cooling water to the tool and the cutting part, but in this tool, unlike the cutting and dismantling work of general reinforced concrete structures, for example, Since there are often major general roads under the elevated roads such as the Shuto Expressway, and vehicles pass frequently, it is advisable to carry out construction without blocking or changing lanes as much as possible. desired.

However, when cutting as described above,
When cooling water is sprayed, in addition to flowing down from the cutting part to the ground,
Cooling water is scattered by a rotating or traveling tool, so it is applied to cars passing underneath, and the cooling water that flows down and scatters in this way is white turbid water mixed with cutting powder of concrete. Since it is also alkaline, the release of this water can be a pollution.

As a countermeasure against this, when cutting an elevated expressway and cutting a concrete floor, a diamond blade is used to cut the concrete floor from the bottom surface of the 5-1.
It is possible to prevent the cooling water from flowing down or to be scattered under the viaduct by advancing the cutting while leaving about 0 mm, and to prevent the scattering of the cooling water at the side wall part. However, when cutting the side wall part of the viaduct, the cooling water is cut off. Since there is nothing to prevent the scattering of, the particles will be scattered downward.

Therefore, the present invention provides a drop protection device for cutting the side wall of an elevated road, which does not cause cooling water to flow downward and scatter at the time of cutting, and does not affect a vehicle or the like running below. The purpose is to

[0007]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention has an L-shaped side face so as to face the side wall of an elevated expressway and the outer surface of the floor, and the opening side is the side wall and the floor. The water drop protector for cutting the sidewall of an elevated road is constructed by forming a water receiver with a U-shaped cross section so as to be in close contact with the outer wall of the section.

Since the present invention is configured as described above, when cutting the side wall of the elevated expressway, a water pan is arranged at the planned cutting portion, and the opening side of the water pan having a U-shaped cross section is located on the side wall and the floor. After fixing in close contact with the outer wall of, the cutting work is performed.
At this time, of the cooling water supplied to the cutting portion, the water that flows down and splashes outside the outer wall is received by the water receiver, and does not adversely affect the vehicle running below. The cooling water collected in the water receiver is discharged to an external drainage facility.

[0009]

Embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, an elevated highway 1 is provided with a concrete floor portion 3 and a side wall 4 on a pillar 2. When cutting or dismantling the highway, a concrete cutter car that drives a diamond blade 5 to rotate. 6 is used. When the side wall 4 is cut by the concrete cutter wheel 6, the water pan 8 is previously supported by an arm 7 extending from a crane truck (not shown). The water pan 8
It is made of an iron plate of about 1 mm, the side surface is L-shaped, and includes a side wall facing portion 10 and a floor facing portion 11.

As shown in FIG. 2, the water pan 8 has a U-shaped cross section composed of a bottom wall 12 and side walls 13 at a side wall facing portion 10 and a floor facing portion 11, and an edge 14 of each side wall 13.
A packing 15 made of an elastic material such as rubber is fixed to. When using the water pan 8, as shown in FIG.
In the state in which the water tank 8 is supported by the mobile crane with its longitudinal center aligned with the planned cutting line, the side wall facing portion 10 moves the side wall 4
The outer surface 16 is pressed against the packing 15 and the floor facing portion 11 is pressed against the lower surface 17 of the floor 3 against the packing 15 to seal the outer wall portion of the planned cutting portion. The bottom wall 12 of the floor facing portion 11 of the water receiver 8 has a drain hole 18,
A hose 20 for connecting to drainage equipment is connected to the outside of the drain hole 18.

When using the water receiver constructed as described above and supported by a crane truck, the concrete cutter truck 6 is run to align the diamond blade 5 with the upper portion of the side wall 4 at the planned cutting position, and the diamond blade 5 is moved.
Rotate and cut. At this time, cooling water is discharged from the outside to the cutting portion to prevent the cutting portion from being heated. This cooling water is diffused around the circumference by the rotating concrete cutter wheel 6 or flows down along the outer surface of the side wall.
Is collected on the bottom surface 12 of the floor facing portion 11 at the bottom, flows down through the water drain hole 18 into the hose 20, and is discharged to drainage equipment.

The concrete cutter car 6 includes a lifting device 1
9 is supported so as to be able to move up and down, and the angle of the diamond blade 5 is variable by an angle changing device, so that the cutting of the side wall 4 is lowered downward, and finally the lower part of the side wall 4 and the end of the floor portion 3 are made. Cutting is performed up to the connecting portion 21 of the part. Even if the cutting proceeds to the bottom of the side wall 4 in this way,
The cooling water at that time is collected inside the floor facing portion 11 of the water receiver 8 and drained without being released to the outside. As described above, when the water pan 8 is attached to a mobile crane and used, a working space is provided because a space for arranging the concrete cutter car 6 is provided between the side wall 4 and the mobile crane.

When the water pan 8 is supported, it is not directly supported by the arm of the mobile crane but is suspended by the wire 23 fixed to the end of the mobile arm of the mobile crane as shown in FIG. An operator brings the water pan 8 into close contact with the side wall 4 and the floor 3, and the side walls are held by the pressers 26 and 27 which can be retracted from the respective sides of the L-shaped bracket 24 fixed to the side wall 4 of the water pan 8 by the screw type rotary handle 25. The upper end of 4 may be fixed horizontally. At this time, a roller that slides on the upper end surface of the side wall may be provided at the upper end of the water receiver 8 so that the operator can freely move laterally.

In addition to the above, the water receiver 8 is supported as shown in FIG.
As shown in, the hydraulic cylinder 31 at the end of the arm 30 fixed to the concrete cutter wheel 6 may be swingably supported. At that time, it is preferable to drive the water receiver 8 and the arm 30 in conjunction with the hydraulic pressure of the blade lifting device 19.

Further, in the above embodiment, an example was shown in which the side wall was cut by the diamond blade of the concrete cutter wheel. As shown in FIG. May be used, in which case a hole is made in the floor near the lower end of the side wall of the part to be cut, and a wire is passed through this to wind the outer circumference of the side wall with the diamond wire 40,
Cutting is performed by running the diamond wire with a predetermined tension by the driving machine 41. At this time, the wire saw 40 is driven so that the diamond wire travels from the upper side to the lower side of the side wall 4, and when a part of the upper end of the side wall is cut, the sprinkler hose is pushed into the cutting groove. It is possible to supply the predetermined cooling water. When cutting with such a diamond wire, it is necessary to take measures against the scattering of beads and the like due to the cutting of the wire, but the water receiver 8 can also serve as its protective wall function.

Further, since the side wall is cut parallel to the floor surface,
When it is necessary to horizontally support the diamond blade and perform cutting, the cutting can be performed by forming the water receiver into a water receiver shape that can be positioned horizontally on the outer side wall.

Further, instead of using the drainage hole for the water receiver, the end of the hose may be arranged at the lower portion of the floor facing portion, and the drainage equipment may be discharged by sucking it up with a pump.

[0018]

EFFECTS OF THE INVENTION Since the present invention is configured as described above, when cutting the side wall of a descending road with a diamond tool, the cooling water used for cutting does not flow downward and is not scattered and runs below. It does not affect the vehicles that run. Therefore, it is not necessary to close the road or change lanes for the vehicle traveling below.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment of the present invention.

FIG. 2 is a partial perspective view of the water pan shown in FIG.

FIG. 3 is a side view of another embodiment of the present invention.

FIG. 4 is a side view of still another embodiment of the present invention.

FIG. 5 is a side view of still another embodiment of the present invention.

[Explanation of symbols]

 1 Highway 2 Support 3 Floor 4 Sidewall 5 Diamond blade 6 Concrete cutter vehicle 7 Arm 8 Water receiver 10 Sidewall facing 11 Floor facing 12 Bottom wall 13 Sidewall 14 Edge 15 Packing 16 Exterior 17 Bottom 18 Drain 20 Hose

Claims (8)

[Claims] 1. An L-shaped side surface is formed so as to face the side wall of the elevated expressway and the outer surface of the floor portion, and the water is formed in a U-shaped cross section so that the opening side is in close contact with the side wall and the outer wall of the floor portion. A protective device for cutting the side wall of an elevated road that forms a bridge. 2. The drop protection device for cutting a side wall of an elevated road according to claim 1, wherein packing is provided at a contact portion between a side wall of the water receiver and an outer surface of the floor. 3. A fall water protector for cutting a side wall of an elevated road according to claim 1, wherein the water receiver is supported on an arm end of a mobile crane. 4. The drop protector for cutting a side wall of an elevated road according to claim 4, wherein the water receiver is provided with a roller capable of running along the upper end surface of the side wall. 5. A fall water protector for cutting a side wall of an elevated road according to claim 1, wherein the water pan is attached to a supporting member of the cutting machine. 6. The fall protection device for cutting a side wall of an elevated road according to claim 1, wherein the water receiver is formed with a portion of the side wall extending in the horizontal direction. 7. The drop protection device for cutting a side wall of an elevated road according to claim 1, wherein the water in the water pan is discharged to the outside through a drain hole provided at the bottom. 8. A fall protection device for cutting a side wall of an elevated road according to claim 1, wherein the water in the water receiver is discharged to the outside by a pump.