JPH0726570A - Pipeline laying method - Google Patents

Abstract

PURPOSE:To allow the quick execution of an efficient continuous work, reduce the extent of occupying road breadth, improve safety, save labor and shorten a construction period. CONSTITUTION:The road is excavated with a road cutter 1 having a mobile mechanism, and a subsoil drilling device 12 mounted on a vehicle traveling after the cutter 1 is operated to excavate the subsoil. A hanging device 30 horizontally supporting a crane device swung back and forth from a vehicle 31 and supported via a plurality of elevating studs 32 erected thereon, is positioned along a execution planning line near the end of a drilled channel. Then, an earth retaining panel 37 and a pipe material are lifted and unloaded from a truck load carrying platform 35a staying forward of the vehicle 31, and laid in the drilled channel. In addition, sediment from the truck load carrying platform 34a positioned on the execution planning line is forcibly fed via a pipe to backfill the channel. These processes are repeated, thereby laying a pipe line.

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 paved road begins with road surface cutting work, and then works such as excavation work for pipe ditches, pipe laying work, and backfilling work in ditches.

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

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

[0005]

In the construction of the excavation groove using the hydraulic shovel excavator, the arm having the bucket portion at the tip is moved up and down to perform the excavation operation and the loading operation of the earth and sand in the bucket. It must be repeated and continuous work cannot be expected.

[0006] Further, the excavated earth and sand are loaded into a dump truck, and since this dump truck is placed next to the excavator, it is necessary to occupy a wide range of roads. Furthermore, when the excavator turns, the bucket portion and the rear portion jump out of the occupied area, which gives anxiety to the vehicle driver and pedestrians on the way. Similarly, when hanging up with a truck equipped with a crane, it is necessary to occupy a wide area because the work is carried out by placing it sideways in the trench.

Moreover, since it is not systematized or automated, work efficiency is poor, and improvements and improvements are required in terms of work environment, safe construction and troublesome work.

The object of the present invention is to eliminate the disadvantages of the above-mentioned conventional example, to enable high-speed construction in an efficient continuous operation, and to reduce the road occupation width to improve safety, save labor,
Another object is to provide a pipeline laying method that can shorten the construction period.

[0009]

To achieve the above object, the present invention provides a road surface cutting step of cutting a road surface with a road surface cutting machine having a self-propelled mechanism, and ground excavation provided in a vehicle following the road surface cutting machine. The ground excavation process of excavating the ground under the road surface cutting to form excavation grooves while traveling with the device, and horizontally supporting the crane device that overhangs in the front-rear direction of the vehicle with a plurality of lifting pedestals standing upright from the vehicle. Arranging the hanging device on the construction planned line in the vicinity of the excavated groove end that has been constructed, earth retention and piping process of arranging the earth retaining plate and the pipe material in the excavation groove by hoisting from the truck carrier stopped in front of it, and The purpose is to construct a pipeline by sequentially repeating the backfilling process in which the earth and sand from the car carrier placed on the planned excavation trench line is pumped and backfilled in the excavation trench. That.

[0010]

According to the present invention, since all the equipment used in the road surface cutting process, ground excavation process, soil retaining and piping process, and backfilling process by the pipe laying method can be placed on the construction line for operation, the road can be occupied. The width can be reduced and the system can be systematized.

[0011]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 to 3 are perspective views of steps showing an embodiment of the pipeline laying method of the present invention.

In FIG. 1, reference numeral 1 denotes a road surface cutting machine which can be self-propelled by wheels, and as shown in FIG. 4, a tilting arm 3 attached with a tilting jack 2 supports a driving part, and this driving part is supported. A cutter wheel 5 for pavement cutting is provided at the end of the drive shaft 4 extending from the left and right, and a crushing and excavating device 8 in which a cup drum type cutter 7 is provided at the lower end of the drive shaft cylinder 6 at the back portion is provided with a lifting jack. And can be raised and lowered.

The road surface cutting step of the present invention is carried out by this 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 causes the cutter wheel 5 to rotate. Then, when the tilting jack 2 is extended, the arm 3 extends from the upright state to the horizontal descending state, the cutter wheel 5 descends, and the blade on the outer periphery cuts into the pavement.

At the same time, when the road surface cutting machine 1 is driven by wheels, the cutting point by the cutter wheel 5 continuously extends. Also, if the drive motor of the crushing and excavating device 8 is started, the cup-drum type cutter 7 rotates,
When the lifting jack is contracted, the entire crushing and excavating device 8 is lowered and the cup-drum type cutter 7 crushes the pavement portion. The crushing of the pavement portion by the cup-drum type cutter 7 is performed at the same time as the cutting by the cutter wheel 5 at the rear side and between the cutting points, and the road surface is completely cut.

The ground excavation device 12 is used as a ground excavation process and is arranged subsequent to the road surface cutting machine 1. The main body is a vehicle 10 having a gate frame lift device 9 such as a forklift. A device 11 holds a casing 11 containing a screw auger so that it can be raised and lowered.

As shown in FIG. 5, the casing 11 is provided with a cutter head 13 in which a screw auger embedded therein has a wire brush 24 planted 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 the drive shaft from the drive motor 14 installed at the upper end of the casing 11.

Further, the casing 11 has a slit-shaped opening 16 formed in the longitudinal direction on the surface of the vehicle 10 in the traveling direction.
In front of the above, a reciprocating cutting excavator 18 provided with a ladder-shaped cutter 17 swingable up and down was arranged in the casing 11.

Further, although the casing 11 is provided with the earth discharging pipe 20 at the upper part, in the present embodiment, two pipes are provided in parallel with the lift device 9, and the exhaust pipe 20 of each casing 11 is provided with the exhaust gas of the vehicle 10. A pressure feed mechanism 21 consisting of a confluent pipe for feeding gas is attached, and an earth hose is discharged from this pressure feed mechanism 21.
I stretched 22 and pumped it to the platform of dump trucks.

On the lower surface of the vehicle 10, there is provided a steering mechanism 25 comprising a combination of a guide roller as shown in FIG. 1 and an expansion / contraction or rotating arm provided at this end, and the guide roller is cut by the road surface cutting machine 1. It was applied to the side wall of the groove as an outrigger to obtain reaction force during excavation.

The cutter 11 is rotated by the drive motor 14 to excavate the ground, and the casing 11 is built. Further, since the drive motor 14 also swings the ladder-shaped cutter 17 of the reciprocating excavator 18 back and forth, excavation is also performed in 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 the upper earth discharge pipe.
Although it is discharged from 20, the force of the exhaust gas of the vehicle 10 is applied by the pressure feeding mechanism 21 and is pipe-fed to the loading platform 27a such as the dump truck 27 via the soil discharging hose 22.

If there is a buried object such as an existing pipe in the ground, excavation is carried out while avoiding it, and if the casing 11 is built up to a predetermined depth in this way, if the vehicle 10 is advanced as it is, The earth and sand are cut by the ladder-shaped cutter 17 of the reciprocating excavator 18, and the cut earth and sand are taken in through the slit-shaped openings 16 of the casing 11 and conveyed as they are by a screw auger to be discharged, whereby the casing 11 Only the length part can be continuously excavated with the required width, and excavation grooves for piping can be constructed.

Then, in order to shift to the earth retention 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 freight vehicle 35 parked on the line of the planned construction site, A suspending device 30 is arranged.

This hoisting device 30 is provided with up and down pedestals 32, which are hydraulic cylinders, standing up and down and left and right of the vehicle 31, similar to a forklift. Overhanging rectangular frame 33
Was supported so that it can be raised and lowered freely.

On the outer frame 33, there is provided a ladder-shaped rectangular inner frame 34 that slides so as to project forward and backward. As a sliding 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.

Further, a traveling rail 39 of the elevator such as a hoist 38 is provided along the length direction of the inner frame 34, and the traveling rail 39 is provided by a hydraulic cylinder so as to be laterally movable in the width direction of the inner frame 34. It was It is assumed that the traveling rail 39 is slightly longer than the inner frame 34 and the end thereof protrudes forward and backward.

The elevating pedestal 32 is extended to raise the outer frame 33 like a forklift, and a crane device including a combination of the outer frame 33 and the inner frame 34 is set above the vehicle 31 so as to be suspended in the front-rear direction.

Further, the inner frame 34 is slid so that the end of the inner frame 34 is larger than that of the outer frame 33, and the end of the inner frame 34 is exposed to the freight car 35 side.
A hoist 38 to be arranged at the end of the traveling rail 39 is a lorry.
It is located above the loading platform 35a of 35. An earth retaining plate 37 made of steel panels is laid sideways on the platform 35a so as to stand upright, and is hoisted by a hoist 38.

The hoist 38 moves along a traveling rail 39, and further, 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 together.
Since it moves in the opposite direction, the earth retaining plate 37 suspended by the hoist 38 can horizontally move over the vehicle 31 and above the excavation groove.

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

Further, the vehicle 31 is provided with an elevating device 40 and a holding mechanism 41 for the earth retaining plate 37 which moves up and down by the elevating device 40.
You may drive 37.

After the disposition of the soil retaining plate 37 is finished, the suspending device 30 is similarly used for suspending the pipe material 55 as shown in FIG.

In FIG. 3, reference numeral 27 in the drawing is the hanging device.
A dump truck, 27a, that parks in front of the vehicle 31 at 30, is its bed. The sand collecting device 42 is mounted on the platform 27a.
To place.

As shown in FIG. 6, the sand collecting device 42 has a plurality of casters 43 provided on the lower surface of a circular drum type main body 42a so as to be movable, and a screw 44 is built in the center of the main body 42a. Drive motor 44a for the screw 44
A cylinder 45 having an upper end is provided, a lower end of the cylinder 45 is used as a soil and sand intake opening 46, and a sediment feeding port 47 is provided at an upper position. In this way, the earth and sand intake opening 46 and the earth and sand outlet 47 are connected by the transport mechanism of the cylinder 45 having the screw 44 built therein.

Further, a vehicle 31 is attached to the earth and sand delivery port 47.
A pressure feed mechanism 51 consisting of a confluent pipe for sending the exhaust gas of is attached to this pressure feed mechanism 51 and a hose connection adapter.
52 is attached to the other end via the adapter 52
Connect the root of the soil transfer pipe 48 provided with 49. It is conceivable to provide the pumping mechanism 51 on the adapter 52 side.

The loading platform 27a of the dump truck 27 is loaded with earth and sand for backfilling, and the sand collecting device 42 is placed on the earth and sand. Further, the suspending device 30 is provided behind the dump truck 27.
The vehicle 31 is located at the other side of which a digging groove in which the pipe material 55 is set exists.

Further, the vehicle 31 is also provided with a rod-type compacting device 62, which will be described later, and the discharge nozzle 49 is held above the excavation groove together with the compaction device 62.
A soil transfer pipe 48 is connected to the sand collecting device 42. Also,
The air supply hose 68 from the exhaust pipe of the vehicle 31 is connected to the pressure supply 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 moving sequentially on the bed 27a by the casters 43, and collects and sends it to the earth and sand feeding port 47 by the screw 44.

The earth and sand are discharged from the earth and sand discharge port 47 through the earth pipe 48 into the excavation groove from the discharge nozzle 49, and thus the earth and sand for backfilling mounted on the cargo bed 27a is mechanically processed. It is transported to the trench and backfilled automatically. At that time, the exhaust gas of the vehicle 31 is sent by the pressure feeding mechanism 51 at the earth and sand outlet 47, and the earth and sand are pressure-fed by the pipe.

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

In the vehicle 31, the lifting device 40 is used to move the rod 65 into the excavation trench.
The vibrator unit 63 is lowered so as to insert the wire so that the wire brush 65a at the tip of the protruding rod 65 sticks into the backfilled earth and sand.

When the vibrator 67 of the vibrator unit 63 is driven in this state, the protruding rod 65 is swung to compact the earth and sand. However, since the tip end of the protruding rod 65 is the wire brush 65a, the pipe material 55 is attached. There is no danger of damage.

[0043]

As described above, according to the pipeline laying method of the present invention, the equipment used in the road surface cutting process, the ground excavation process, the soil retention and piping process, and the backfilling process are all placed on the construction line for the work. As a result, the road occupation width can be reduced, high-speed construction can be performed in an efficient continuous operation, safety can be improved, labor can be saved, and the construction period can be shortened.

[Brief description of drawings]

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

FIG. 2 is a perspective view showing a piping step 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 usage state of the ground cutting device.

FIG. 6 is a vertical sectional side view of the backfill device.

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

[Explanation of symbols]

1 ... Road surface 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 ... Lift device 10 ... Vehicle 11 ... Casing 12 ... Ground Excavator 13 ... Cutter head 14 ... Drive motor 16 ... Opening 17 ... Ladder cutter 18 ... Reciprocating cutting excavator 19 ... Cam mechanism 20 ... Exhaust pipe 21 ... Pressing mechanism 22 ... Exhaust hose 24 ... Wire brush 25 ... Steering mechanism 27 ... Dump truck 27a ... Luggage platform 30 ... Lifting device 31 ... Vehicle 32 ... Elevating pedestal 33 ... Outer frame 34 ... Inner frame 35 ... Freight vehicle 35a ... Luggage platform 36 ... Winch 37 ... Clasp plate 38 ... Hoist 39 ... Traveling rail 40 … Lifting device 41… Holding mechanism 42… Sand collector 42a… Main body 43… Caster 44… Screw 44a… Drive motor 45… Cylinder 46… Sediment intake port 47… Sediment outlet 48… Sediment 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)

[Claims] 1. A road surface cutting step of cutting a road surface with a road surface cutting machine having a self-propelled mechanism, and excavation of the ground under the road surface cutting while traveling with a ground excavation device provided in a vehicle following the road surface cutting machine. Ground excavation process to form excavation trench by
A suspending device that horizontally supports a crane device that extends in the front-rear direction above this vehicle with multiple elevating pedestals standing upright from the vehicle is placed on the construction line near the end of the excavation groove where the construction was performed, and stopped in front of it. Soil retention and piping process where earth retaining plates and pipe materials are placed in the excavation groove by unloading from the truck bed, and earth and sand from the car carrier placed on the construction line of the excavation groove are pipe-fed and buried in the excavation groove. A pipeline laying method characterized by constructing a pipeline by sequentially repeating a backfilling step of returning.