JP2619792B2 - Pipe laying method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipeline laying work.

[0002]

2. Description of the Related Art Pipe laying work under an existing pavement road starts with a road surface cutting work, and proceeds with pipe digging work, pipe laying work, and backfilling work in a groove.

[0003] Of these, the main work in cutting the road surface is to remove the pavement such as asphalt or concrete, but a cutter having a rotary blade attached so as to be perpendicular to the road surface is used. The road surface is cut vertically and then broken between breaks with a breaker or the like.

[0004] In addition, a hydraulic shovel-based excavator such as a hydraulic backhoe is used in the excavation work for a piping slot, and further, in order to suspend earth retaining material, pipe material, and other materials into an excavation groove provided on a road. Hanging by truck with crane.

[0005]

In the construction of a digging groove using the excavator of the hydraulic shovel system, an arm provided with a bucket portion at its tip is moved up and down to perform a digging operation and a loading operation of earth and sand in the bucket. It must be repeated and no continuous work can be expected.

In addition, loading of excavated earth and sand is performed on a dump truck, and since the dump truck is laid sideways on an excavator, a wide range of road occupation is required. Further, when the excavator turns, the bucket portion and the rear portion jump out of the occupation range, giving a feeling of anxiety to the vehicle driver and the pedestrian who are passing. Similarly, hanging a truck with a crane works sideways in a digging trench, so a wide range of road occupation is required.

[0007] In addition, since the system is not systematized or automated, the work efficiency is poor, and there is a need to improve and improve the work environment, safe construction and difficult work.

An object of the present invention is to solve the above-mentioned disadvantages of the prior art, to enable efficient high-speed construction by continuous work, to reduce the occupation width of roads, to improve safety, to save labor,
Another object of the present invention is to provide a pipeline laying method capable of shortening a construction period.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a road surface cutting step for cutting a road surface with a road surface cutting machine having a self-propelled mechanism, and a ground excavation provided on a vehicle following the road surface cutting machine. A ground excavation step of excavating the ground under the road surface cutting to form an excavation groove while traveling with the device, and a crane device horizontally extending over the vehicle in a front-rear direction with a plurality of elevating legs standing upright from the vehicle. Arranged on the planned construction line near the end of the excavated trench where the suspended device was constructed, and a retaining and piping process of disposing a retaining plate and pipe material in the excavated trench by hanging down from the truck bed stopped in front thereof, The gist is to construct a pipeline by sequentially repeating the backfilling process, in which the soil and sand from the car carrier placed on the planned drilling trench line is pipe-pumped and backfilled in the trench. That.

[0010]

According to the present invention, all the equipment used in the road surface cutting step, ground excavation step, earth retaining and piping step, and backfilling step by the pipe laying method can be arranged on the construction line and work can be performed. The width can be reduced and the system can be systemized.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 3 are perspective views of steps showing one embodiment of the pipeline laying method of the present invention.

In FIG. 1, reference numeral 1 designates a road surface cutting machine which is capable of self-running by wheels. As shown in FIG. 4, the driving unit is supported by a tiltable arm 3 having a tilting jack 2 attached thereto. A cutter wheel 5 for pavement cutting is provided at the end of the drive shaft 4 extending right and left from the left and right, and a crushing excavator 8 having a cup drum type cutter 7 provided at the lower end of the drive shaft cylinder 6 at the back portion is interposed with a lifting jack. It is arranged to be able to move up and down freely.

The road surface cutting step of the present invention is performed by the road surface cutting machine 1.
The rotation of the drive unit is transmitted to the drive shaft 4, and the rotation of the drive shaft 4 rotates the cutter wheel 5. When the tilt jack 2 is extended, the arm 3 extends from the upright state to the horizontal descending state, and the cutter wheel 5 descends so that the outer peripheral blade cuts into the pavement to perform cutting.

At the same time, if the road surface cutting machine 1 is driven by the wheels, the cutting position by the cutter wheel 5 extends continuously. When the drive motor of the crushing and digging device 8 is started, the cup drum type cutter 7 rotates,
When the lifting jack is contracted, the entire crushing and digging apparatus 8 descends, and the cup drum type cutter 7 crushes the pavement. The pulverized portion is crushed by the cup drum type cutter 7 at the same time as the cutting by the cutter wheel 5 at the rear thereof and between the cutting points, and the road surface is completely cut.

The ground excavator 12 is used for the ground excavation process and is disposed as a follower of the road surface cutting machine 1. The ground excavator 12 includes a vehicle 10 having a gate-type frame lift device 9 such as a forklift as a main body. The casing 11 containing the screw auger is held by the device 9 so as to be movable up and down.

As shown in FIG. 5, the casing 11 has a built-in screw auger provided with a cutter head 13 having a wire brush 24 implanted at its tip, and the cutter head 13 is positioned outside the lower end of the casing 11. The upper end of the screw auger is connected to a drive shaft from a drive motor 14 installed at the upper end of the casing 11.

The casing 11 has a slit-like opening 16 formed in the longitudinal direction on the surface of the vehicle 10 in the traveling direction.
Before, a reciprocating cutting excavator 18 provided with a ladder-shaped cutter 17 so as to be able to swing up and down was arranged in the casing 11.

Further, the casing 11 is provided with an exhaust pipe 20 at the upper part. In this embodiment, two pipes are provided in parallel with the lift device 9. A pumping mechanism 21 consisting of a merging pipe for feeding gas is attached, and a discharging hose is
The 22 was extended and the pipes were pumped to a loading platform such as a dump truck.

On the lower surface of the vehicle 10, there is provided a steering mechanism 25 comprising a combination of a guide roller and a telescopic or rotary arm provided at the end of the guide roller as shown in FIG. An outrigger was applied to the side wall of the groove to obtain the reaction force during excavation.

The cutter head 13 is rotated by the drive motor 14 to excavate the ground, and the casing 11 is erected. Further, the drive motor 14 also causes the ladder-shaped cutter 17 of the reciprocating cutting excavator 18 to swing back and forth, so that excavation is also performed at this portion.

The earth and sand excavated by the cutter head 13 rises in the casing 11 by a screw auger, and is discharged from an upper discharge pipe.
The exhaust gas is exhausted from 20, and the force of the exhaust gas of the vehicle 10 is applied by the pumping mechanism 21 to be pipe-fed to the loading platform 27a such as the dump truck 27 via the discharging hose 22.

If there is a buried object such as an existing pipe in the ground, excavation is performed to avoid this, and if the casing 11 is built up to a predetermined depth in this way, the vehicle 10 can proceed as it is. The earth and sand is cut by the ladder-shaped cutter 17 of the reciprocating cutting excavator 18, and the cut earth and sand is taken in through the slit-shaped opening 16 of the casing 11, conveyed as it is by the screw auger and discharged, and thereby the casing 11 is removed. Continuous excavation is performed in the required width only in the length part, and the excavation groove for piping can be constructed.

Then, in order to shift to the earth retaining and piping process of arranging the earth retaining plate and the pipe material in the excavation trench, in the vicinity of the end of the excavation trench, between the lorry 35 stopped on the line of the planned construction site, The hanging device 30 is arranged.

The lifting device 30 is provided with elevating columns 32 formed by hydraulic cylinders from the front and rear and left and right of the vehicle 31 like a forklift. Overhanging rectangular outer frame 33
Was supported to be able to move up and down freely.

A ladder-like rectangular inner frame 34 is provided on the outer frame 33 so as to slide forward and backward. As a slide mechanism of the inner frame 34, a wire (not shown) fed from the winch 36 is wound around a guide roller, and the wire is pulled in by this wire.

Further, a running rail 39 for an elevator such as a hoist 38 is provided along the length direction of the inner frame 34. The running rail 39 is provided so as to be laterally movable in the width direction of the inner frame 34 by a hydraulic cylinder. Was. The running rail 39 is slightly longer than the inner frame 34 and has an end projecting forward and backward.

The outer frame 33 is lifted like a forklift by extending the elevating pillar 32, and the crane device formed by the combination of the outer frame 33 and the inner frame 34 is set so as to be extended over the vehicle 31 in the front-rear direction.

The inner frame 34 is slid with respect to the outer frame 33 so that the end of the inner frame 34 is largely exposed to the lorry 35 side.
Lorry hoist 38 placed at the end of the running rail 39
It is located above the 35 loading platform 35a. An earth retaining plate 37 made of a steel panel is horizontally and vertically stacked on the carrier 35a, and is lifted by a hoist 38.

The hoist 38 moves along the traveling rail 39, and the traveling rail 39 slides the inner frame 34 with respect to the outer frame 33, so that the inner frame 34 and the vehicle 31 are moved together.
, The earth retaining plate 37 suspended by the hoist 38 can also move horizontally over a large distance from above the vehicle 31 to above the excavation groove.

Further, since the traveling rail 39 can be moved laterally in the width direction of the inner frame 34 by a hydraulic cylinder, the earth retaining plate 37 brought above the excavation groove is moved to one side of the hole wall of the excavation groove. Can be arranged from.

Further, the vehicle 31 is provided with a lifting / lowering device 40 and a holding mechanism 41 of a retaining plate 37 which moves up and down by the lifting / lowering device 40.
37 shots may be performed.

After the arrangement of the earth retaining plate 37 is completed, the hanging device 30 is similarly used for hanging the pipe member 55 as shown in FIG.

In FIG. 3, reference numeral 27 denotes the suspension device.
The dump truck, which stops in front of the vehicle 31 at 30, 27a is its carrier. A sand collecting device 42 is mounted on the loading platform 27a.
Place.

As shown in FIG. 6, the sand collecting device 42 is provided with a plurality of casters 43 on the lower surface of a circular drum type main body 42a and is movable. A screw 44 is built in the center of the main body 42a. The drive motor 44a of the screw 44
Is provided at the upper end, and the lower end of the tube 45 is used as the earth and sand intake opening 46, and the earth and sand discharge port 47 is provided at the upper position. In this way, the earth and sand intake opening 46 and the earth and sand discharge port 47 are connected by the transport mechanism with the cylinder 45 having the screw 44 built therein.

Further, the vehicle 31 is connected to the earth and sand discharge port 47.
A pumping mechanism 51 consisting of a merging pipe for feeding the exhaust gas of
Attach 52 and discharge nozzle to the other end via the adapter 52
Connect the root of the soil sending pipe 48 provided with 49. It is also conceivable to provide the pumping mechanism 51 on the adapter 52 side.

The backing 27a of the dump truck 27 is loaded with earth and sand for backfilling, and a sand collecting device 42 is placed on the earth and sand. Further, the hanging device 30 is provided behind the dump truck 27.
The vehicle 31 is arranged, and there is an excavation groove in which the pipe 55 is set.

Further, the vehicle 31 is also provided with a protruding rod type compacting device 62 described later, etc., together with which the discharge nozzle 49 is held above the excavation groove.
Is connected to the sand collecting device. Also,
An air supply hose 68 from an exhaust pipe of the vehicle 31 is connected to the pumping mechanism 51.

The sand collecting device 42 takes in the earth and sand on the bed 27a from the earth and sand intake opening 46 while sequentially moving the place on the bed 27a by the casters 43, and collects and sends it to the earth and sand discharge port 47 by the screw 44.

The earth and sand is discharged from the earth and sand discharge port 47 through the earth sending pipe 48 into the excavation groove from the discharge nozzle 49, and the earth and sand for backfilling mounted on the loading platform 27a is mechanically It is transported into the trench and backfill is performed automatically. At that time, the exhaust gas of the vehicle 31 is sent from the earth and sand sending-out port 47 by the pumping mechanism 51, and the earth and sand is sent by pipe.

The compacting device 62 is a lifting device 40 of the vehicle 31.
As shown in FIG. 7, a vibrator unit 63 having an exciter 67 is provided on a mounting plate 64 for the elevating device 40, and the mounting plate of the vibrator unit 63 projects downward. A base portion 66 in which bars 65 are arranged in parallel at intervals is attached. A steel pipe was used for the protruding rod 65, and the tip portion was constituted by a wire brush 65a.

In the vehicle 31, the lifting rod 40 is used to move the protruding rod 65 into the excavation groove.
Then, the vibrator unit 63 is lowered so that the wire brush 65a at the tip of the protruding rod 65 pierces the backfilled earth and sand.

In this state, when the exciter 67 of the vibrator unit 63 is driven, the protruding rod 65 is swung to compact the soil. However, since the protruding rod 65 has a wire brush 65a at the tip end, the pipe 55 is removed. There is no risk of damage.

[0043]

As described above, in the pipe laying method of the present invention, the equipment used in the road surface cutting step, the ground excavation step, the earth retaining and piping step, and the backfilling step are all arranged on the construction line. As a result, the road occupation width can be reduced, efficient high-speed construction can be performed by continuous work, and safety can be improved, labor can be saved, and the construction period can be shortened.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a road surface cutting step, a ground excavation step, and a soil retaining step in a pipe laying method according to the present invention.

FIG. 2 is a perspective view showing a piping process of the pipeline laying method of the present invention.

FIG. 3 is a perspective view showing a backfilling step of the pipeline laying method of the present invention.

FIG. 4 is a vertical sectional side view of a road surface cutting machine.

FIG. 5 is a perspective view showing a use state of the ground cutting device.

FIG. 6 is a vertical side view of the backfilling device.

FIG. 7 is a perspective view of a compaction device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Road cutting machine 2 ... Tilt jack 3 ... Arm 4 ... Drive shaft 5 ... Cutter wheel 6 ... Drive shaft cylinder 7 ... Cup drum type cutter 8 ... Crushing excavator 9 ... Lifting device 10 ... Vehicle 11 ... Casing 12 ... Ground Excavator 13 ... Cutter head 14 ... Drive motor 16 ... Opening 17 ... Ladder-shaped cutter 18 ... Reciprocating cutting excavator 19 ... Cam mechanism 20 ... Discharge pipe 21 ... Pressing mechanism 22 ... Discharge hose 24 ... Wire brush 25 ... Steering mechanism 27 ... Dump truck 27a ... Carrier 30 ... Hanging device 31 ... Vehicle 32 ... Elevating pillar 33 ... Outer frame 34 ... Inner frame 35 ... Truck truck 35a ... Carrier 36 ... Winch 37 ... Soil plate 38 ... Hoist 39 ... Rail 40 ... Elevating device 41 ... Holding mechanism 42 ... Sand collecting device 42a ... Main body 43 ... Caster 44 ... Screw 44a ... Drive motor 45 ... Cylinder 46 ... Soil and sand intake opening 47 ... Soil and sand discharge port 48 ... Soil feeding pipe 49 ... Out nozzles 51 ... pumping mechanism 52 ... adapter 55 ... tube 62 ... compacting device 63 ... vibrator unit 64 ... mounting plate 65 ... projecting rod 65a ... wire brush 66 ... base portion 67 ... exciter 68 ... air line

Claims (1)

(57) [Claims] 1. A road surface cutting step of cutting a road surface with a road surface cutting machine having a self-propelled mechanism, and excavating the ground below the road surface cutting while running with a ground excavation device provided in a vehicle following the road surface cutting machine. Ground excavation process to form excavation grooves
A lifting device, which horizontally supports a crane device extending in the front-rear direction above the vehicle with a plurality of elevating pillars erected from the vehicle, is arranged on a construction line near the end of the excavation groove where the construction is performed, and is stopped in front of the suspension device. Earthing and piping process of placing earth retaining plates and pipes in the excavation trench by dropping it from the truck bed, and sediment from the car bed placed on the planned line of the excavation trench by pipe feeding and embedding in the excavation trench A pipeline laying method characterized in that a pipeline is constructed by sequentially repeating a back-filling process.