JP2971016B2 - Side hole drilling method with screw auger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to excavation of a horizontal hole for pulling in a pipe by a screw auger, which draws a horizontal hole for drawing while adding a plurality of screw augers when drawing a small or medium diameter gas pipe or the like into the ground. Concerning the construction method,
In particular, the present invention relates to a method of excavating a horizontal hole using a screw auger, in which soil scraped by the screw auger is efficiently discharged to the ground.

[0002]

2. Description of the Related Art Conventionally, a screw auger propulsion method has been known as a method of excavating a lateral hole for drawing a small or medium-diameter gas pipe or the like into the ground.

In this method, a propulsion shaft and a reaching shaft are excavated on the ground to be piped, and a screw auger of a required length is sequentially added to the soil by a screw auger propulsion machine installed in a hole of the propulsion shaft. After excavating a horizontal hole of the required diameter up to the reaching shaft, the gas pipe is drawn into the horizontal hole from the side of the reaching shaft, and conversely, the gas pipe is pulled out to the side of the propelling shaft and piped. is there.

As such a screw auger propulsion device, the present inventor has proposed an auger propulsion device having a simple configuration (Japanese Patent Application No. 5-242244). That is,
As shown in FIG. 6, a movable platform 30 is disposed movably back and forth along horizontal guide shafts 20 and 21 on a ground platform 10 installed in a hole of a propulsion shaft, and is mounted on a driving unit 40. The rotational force of the screw auger 70 is obtained by the driving force from the electric motor 60 and the manual handle 52
The rack 14 and the pinion 54 of the feed mechanism 50 are engaged with each other by manual operation in the directions of the arrows A and B to feed the movable table 30 in the forward direction (propulsion direction).

When excavating a horizontal hole having a required diameter in the soil, as shown in FIG. 7, a screw auger propulsion device is carried into a propelling shaft and propelled into the soil with the chuck mechanism 45. When the movable platform 30 is advanced by manual operation with the manual handle 52 while sequentially adding the screw augers 70 to the screw augers 70, a horizontal hole having a required diameter is excavated in the soil.

[0006]

As described above, the above-described conventional screw auger propulsion device uses the electric motor 60
The rotational force of the screw auger 70 is obtained by the driving force from the motor, and the propulsion force of the screw auger 70 is obtained by manual operation of the manual handle 52 in the directions of arrows A and B. Therefore, the configuration of the propulsion device is simple. Because of its small size and light weight, the transport and installation of the propulsion device are simple. In addition, since the screw auger 70 is manually propelled into the soil, the hardness of the soil can be determined in response, and the screw auger 70 can be prevented from being forcedly pushed into the soil. It is also possible to prevent the damage of the car.

However, in such a lateral hole excavation method using a screw auger, as the screw auger 70 is propelled into the soil, earth and sand is scraped into the propulsion shaft and accumulates in the propulsion shaft. It is necessary to discharge sediment sequentially to the ground. Such an operation of discharging the earth and sand is usually performed using a screw auger 70 from the viewpoint of safety and the like.
The power switch 64 of the electric motor 60 is turned off at the time of refilling, and the rotation of the screw auger 70 is stopped.

Incidentally, in such a lateral hole excavation method, the power switch 64 of the electric motor 60 is turned off every time the screw auger 70 is added, and
0, the operation of stopping the rotation of 0, the operation of separating the screw auger 70 propelled into the soil from the chuck mechanism 45, the operation of moving the moving table 30 away from the transfer and excavation site by the manual operation of the manual handle 52, the propulsion Work to discharge sediment accumulated in the shaft to the ground, Work to add the screw auger 70 between the screw auger 70 propelled in the soil and the chuck mechanism 45, Turn on the power switch 64 of the electric motor 60 and screw A series of work steps such as the work of rotating the auger 70 and the work of sending the movable table 30 by manual operation of the manual handle 52 are repeated.

Therefore, the excavation operation by the screw auger 70 is interrupted during the earth and sand discharge operation, so that the excavation operation is prolonged. Also, in the work of discharging earth and sand to the ground, the worker leans down and scoops the earth and sand that has been scraped into the propulsion shaft,
Since the operation of discharging to the ground is repeated, there is also a problem that such operation is continued, resulting in fatigue.

[0010] The present invention has been made in view of such circumstances, and simplifies the work by automating the operation of discharging the earth and sand scraped into the shaft for propulsion to the ground.
An object of the present invention is to provide a horizontal hole excavation method using a screw auger capable of reducing the work time of excavation and reducing the work load.

[0011]

According to the first aspect of the present invention,
The screw auger of the required length is chucked by a chuck mechanism provided on a movable table that is movable along a guide shaft on the grounding table of the screw auger propulsion machine installed in the shaft for propulsion, and the electric motor chucks the screw auger. A horizontal hole excavation by a screw auger that excavates a horizontal hole while sequentially adding the screw augers while applying a rotational force to the screw auger by a driving force from a motor and causing the screw auger to be propelled into the soil as the moving table moves. In the method of construction, the earth and sand scraped into the shaft by the screw auger is received by a gutter of a lifting device positioned near the lateral hole to be excavated, and a bucket that circulates vertically in the lifting device. Picking up the earth and sand received by the gutter and discharging it to the ground And it features.

According to a second aspect of the present invention, the earth and sand scraped into the shaft by the screw auger is received by a gutter attached to a rake port below a cylinder of the earth-lifting apparatus, and A plurality of buckets attached at a required pitch on an outer peripheral side of a belt wound between pulleys supported on upper and lower portions of the inside of the inside are rotated by driving the belt, and the earth and sand received by the receiving gutter is scooped. And discharging to the ground from a discharge port above the cylindrical body.

According to a third aspect of the present invention, a chuck mechanism provided on a movable table which is movable along a guide shaft on a grounding table of a screw auger propulsion machine installed in a shaft for propulsion is required. Chucking a screw auger of length, while applying a rotational force to the screw auger by a driving force from an electric motor, while propelling into the soil along with the movement of the moving table, sequentially the screw auger In the side hole excavation method with a screw auger that excavates a side hole while adding,
Sediment scraped into the shaft by the screw auger is received by a gutter of a lifting device located near the horizontal hole to be excavated, and a screw conveyor arranged in a vertical direction of the lifting device. And picking up the earth and sand received by the gutter and discharging it to the ground.

[0014]

The horizontal hole excavation method using a screw auger according to the present invention is intended to simplify the operation by automatically discharging the earth and sand scraped into the propelling shaft into the ground, and to simplify the operation. The sediment raked by the screw auger is received by the gutter of the lifting device located in the vicinity, and the received soil is picked up by the bucket of the lifting device circling in the vertical direction and discharged to the ground. is there.

That is, a gutter is attached to a rake opening below the cylindrical body of the earth-lifting device, and a required outer circumferential side of a belt wound between pulleys supported at upper and lower parts inside the cylindrical body is provided. Multiple buckets are attached at the pitch,
By rotating these buckets by belt driving, the earth and sand received by the gutter can be scooped and discharged to the ground from the discharge port above the cylindrical body. In addition, the sediment scraped into the shaft by the screw auger can be received by the receiving gutter, and the received sediment can be scooped up by a screw conveyor arranged in the vertical direction of the earth-lifting device and discharged to the ground.

Therefore, during the excavation work by the screw auger, the work of discharging the earth and sand to the ground is automatically performed by the unloading device, so that the work of manually discharging the earth and sand to the ground is not required, and the earth and sand is discharged. Since the time required is sometimes omitted, the work time for excavation can be reduced, and the work load can be reduced.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. In the drawings described below, the same reference numerals are given to parts common to FIGS. 3 and 4.

FIG. 1 and FIG. 2 show an embodiment of a lateral hole excavation method using a screw auger according to the present invention, in which mounting holes 11 are provided at four corners of a grounding stand 10 installed in a hole of a propulsion shaft. An anchor fixing plate 12 is provided integrally. In addition, a foot switch 13 for releasing the ON state of a diaphragm-type pressure switch 22 described later is provided on one side of the grounding table 10. Further, a rack 14 is provided in the middle of the grounding table 10, and engages with a pinion 54 described later to move the moving table 3 described later.
0 is moved forward or backward. Furthermore,
Two guide shafts 20, 21 are horizontally arranged on the ground stand 10.
A movable table 30 is movably supported by a support member 1 via a support portion 31.

A driving section 40 having a speed reduction mechanism constituted by a worm gear or the like (not shown) is mounted on the moving table 30. The drive unit 40 is provided with a square hole-shaped fixing frame 41 for fixing the electric motor 60. A vertical drive shaft 43 having a square hole-shaped insertion port 42 into which a square shaft 61 of an electric motor 60 is inserted at the center lower portion of the fixed frame 41.
When the square shaft 61 rotates with the square shaft 61 inserted into the insertion port 42, the chuck mechanism 45 attached to the output shaft 44 of the reduction mechanism (not shown) via the vertical drive shaft 43 Rotate.

The chuck mechanism 45 detachably mounts a metal screw auger 70, and can chuck the rear end 71 of the screw auger 70 by opening the locking piece 46 divided into four parts. I can do it.

Here, the length of the screw auger 70 is approximately 30 to 50 cm, and a spiral screw blade 72 is formed along the axial direction. Also, the rear end 71 and the front end 73 of the screw auger 70 (see FIG. 3).
Has a female screw part and a male screw part, respectively,
A cutting tip 74 (see FIG. 3) is attached to the leading end 73 of the leading screw auger 70, and the leading end 73 of the next screw auger 70 is attached to the rear end 71 of the screw auger 70. I have.

A drive case 51 having a ratchet mechanism capable of switching between forward (forward side) and reverse (reverse side) rotations of the feed mechanism 50 (not shown) is attached to the movable base 30. A manual handle 52 is attached to the drive case 51 so as to be rotatable in the directions of arrows A and B. The manual handle 52 is connected to the ratchet mechanism of the drive case 51 by rotating the manual handle 52 in the directions of arrows A and B. The pinion 54 attached to the rotating shaft 53 is engaged with the rack 14 on the grounding table 10 side, and sends the moving table 30 in the forward direction (propulsion direction) or the backward direction.

A power cord 63 for receiving electric power from a generator (not shown) is connected to the grip 62 of the electric motor 60. The grip 62 is provided with a power switch 64 for manually turning on / off the power supply from the generator. When the screw auger 70 is added during operation or the like, the power switch 6 is turned on.
By turning off the motor 4 and interrupting the driving of the electric motor 60, the work can be performed safely.

It should be noted that since the electric motor 60 having an output equivalent to that of a drive motor built in a small electric drill generally owned by a pipe construction worker is sufficient, the electric motor 60 cannot be carried around. It can be configured to be easily sized and weighed.

An excavating device 90 is provided in the shaft for propulsion in a state of being close to the lateral hole 80. At the rake port 90a of the earth lifting device 90, a receiving gutter 91 is provided so as to be inclined downward toward the rake port 90a side, and receives the sediment scraped out by the screw auger 70. .

At the top and bottom inside the cylindrical body 92 of the earth-lifting device 90,
Pulleys 93a and 93b are rotatably disposed, and a plurality of buckets 95 are attached at a required pitch to a belt 94 stretched between the pulleys 93a and 93b. With the rotation of the belt 94, the buckets 95 circulate in the vertical direction, and the soil received by the receiving gutter 91 is sequentially scooped.

A drive motor 96 is provided above the cylinder 92, and the drive force of the drive motor 96 is controlled by a pulley 97a.
Through a belt 98 to a pulley 97b provided coaxially with the pulley 93a.
A vertical circling force is applied to the plurality of buckets 95. The earth and sand scooped up by each bucket 95 is discharged to the ground from a discharge port 99 provided at an upper portion of the cylindrical body 92.

Next, an excavation method using the screw auger propulsion device having the above-described configuration will be described with reference to FIGS. First, as shown in FIG. 3, the screw auger propulsion device is carried into the shaft for propulsion, and the anchor 15 is driven into the mounting hole 11 of the anchor fixing plate 12 of the ground stand 10 to fix the ground stand 10 in the shaft. I do. At the same time, the electric motor 60 is set on the fixed frame 41 of the drive unit 40, and the above-described generator is started.

Next, the excavating device 90 is carried into the shaft for propulsion. At the time of loading of the lifting device 90, the lifting device 9 is inserted into the side hole 80 to be excavated by the screw auger 70.
The rake port 90a of “0” is brought close. At this time, the gutter 91
Is preferably as close as possible to the inner wall of the shaft for propulsion, so that the earth and sand scraped off by the screw auger 70 does not spill out of the receiving gutter 91.

In this state, a driving motor 96 provided above the cylinder 92 of the earth lifting device 90 is driven to drive a belt 94 stretched between the pulleys 93a and 93b, and a plurality of buckets 95 are driven. Is vertically circulated inside the cylindrical body 92. After the setting of the lifting device 90 is completed, the ratchet mechanism (not shown) of the drive case 51 is reversed (retracted side).
And the manual handle 52 is reciprocated between the directions of the arrows A and B, whereby the movable table 30 is retracted away from the excavation point, and the rear end 71 of the screw auger 70 having the cutting tip 74 attached to the tip. The chuck mechanism 4
5, the power switch 64 of the electric motor 60
Turn on.

As a result, the rotation of the angular shaft 61 of the electric motor 60 rotates the chuck mechanism 45 of the drive unit 40, and applies a rotational force to the screw auger 70 chucked by the chuck mechanism 45. In this state, when the ratchet mechanism (not shown) of the drive case 51 is switched to the forward (forward side), and the manual handle 52 is reciprocated between the directions of the arrows A and B to gradually move the carriage 30 in the forward direction. ,
Excavation of the lateral hole 80 is started by the cutting tip 74 of the screw auger 70, and excavation and scraping of the excavated soil is gradually progressed by the screw blade 73 of the screw auger 70.

At this time, the earth and sand scraped out by the screw auger 70 is received by the gutter 91 and the bucket 9 circling in the vertical direction inside the cylindrical body 92.
After being sequentially picked up by 5, it is discharged to the ground from a discharge port 99 provided at the upper part of the cylinder 92. In this way, when the propulsion of the leading screw auger 70 into the soil is completed, the power switch 64 of the electric motor 60 is turned off.
Is turned off to stop the driving of the electric motor 60 and the rotation of the chuck mechanism 45 is stopped.
The separation operation from the zero chuck mechanism 45 is performed.

After the screw auger 70 is separated from the chuck mechanism 45, the ratchet mechanism (not shown) of the drive case 51 is switched again to the reverse (retreat side), and the manual handle 5
2 is reciprocated between the directions of arrows A and B to move the movable table 30 backward away from the excavation point.

In this state, as shown in FIG. 4, the tip 73 of the next screw auger 70 is screwed into the rear end 71 of the screw auger 70 left in the soil.
The ratchet mechanism is switched to the forward (forward side) again, and the manual handle 52 is reciprocated between the directions of the arrows A and B to move the moving table 3.
0 is gradually advanced, and the rear end 71 of the next screw auger 70 is chucked by the chuck mechanism 45.

After the chucking of the screw auger 70 is completed, the power switch 64 of the electric motor 60 is turned on to drive the electric motor 60, and the two screw augers 70 connected by the rotation of the chuck mechanism 45 are rotated. .

In this state, the manual handle 52 is moved to the direction indicated by the arrow A,
When the movable table 30 is gradually advanced by being reciprocated in the direction B, excavation by the cutting tip 72 of the screw auger 70 is continued, and excavation according to the movement of the movable table 30 is gradually advanced deeper. At this time, screw auger 7
As described above, the earth and sand scraped out by the zero is received by the gutter 91 and is sequentially scooped up by the bucket 95 circling in the vertical direction inside the cylindrical body 92, and then provided on the upper part of the cylindrical body 92. Is discharged to the ground through the discharge port 99.

Thereafter, similarly, the screw auger 7
By propagating the soil while adding 0, the excavated earth and sand excavated by the propulsion of the leading screw auger 70 is sequentially sent out by the subsequent screw auger 70, and is sequentially discharged to the ground by the above-described earthing device 90. The continuous horizontal hole 80 is excavated before reaching the reaching shaft.

As described above, in the present embodiment, the rake port 90a of the earth-lifting device 90 is brought close to the side hole 80 to be excavated by the screw auger 70, and the screw auger 70 is driven into the soil to enter the shaft. The scraped earth and sand is received by a gutter 91 provided at the rake port 90a, and is scooped up sequentially by a plurality of buckets 95 circling in the vertical direction inside the cylindrical body 92. Discharge from the discharge outlet 99 to the ground, the excavation work with the screw auger 70 eliminates the need to discharge the earth and sand to the ground, and the work can be simplified. Work load is reduced.

In the present embodiment, the sediment scraped into the shaft when the screw auger 70 is propelled into the soil is received by the receiving trough 91 and the receiving trough 9 is received.
1 has been described, in which the plurality of buckets 95 circling in the vertical direction inside the cylindrical body 92 sequentially scoop up the sediment received by the device 1 and discharge it to the ground from the discharge port 99. However, the present invention is not limited to this example. As shown in FIG. 5, the earth and sand received by the receiving gutter 91 may be sequentially scooped by a screw conveyor 95 </ b> A vertically disposed inside the earth lifting device 90, and may be discharged to the ground from the outlet 99.

[0040]

As described above, according to the horizontal hole excavation method using the screw auger of the present invention, the earth and sand scraped out by the screw auger by the gutter of the earth lifting device located near the horizontal hole to be excavated. Receiving and receiving the received earth and sand is lifted up by a bucket of a lifting device that circulates in the vertical direction and discharged to the ground, and a gutter is attached to a rake opening below a cylinder of the lifting device,
Also, a plurality of buckets are attached at a required pitch on the outer peripheral side of the belt wound between the pulleys supported on the upper and lower portions of the inside of the cylindrical body, and by rotating these buckets by belt driving. The earth and sand received by the gutter can be scooped and discharged to the ground from the discharge port above the cylinder.

The earth and sand raked into the shaft by the screw auger is received by the receiving gutter, and the received earth and sand is scooped up by the screw conveyor arranged in the vertical direction of the earth-lifting device and discharged to the ground. it can.

Therefore, during excavation work by the screw auger, the work of discharging earth and sand to the ground is automatically performed by the earth-lifting device, so that the work of discharging earth and sand to the ground by hand is not required, and the earth and sand is discharged. Since the time required sometimes is omitted, the work time for excavation can be reduced, and the work load can be reduced.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of a lateral hole excavation method using a screw auger of the present invention.

FIG. 2 is a diagram showing the lifting apparatus of FIG. 1;

FIG. 3 is a view for explaining a lateral hole excavation method using the screw auger of FIG. 1;

FIG. 4 is a view for explaining a lateral hole excavation method using the screw auger of FIG. 1;

FIG. 5 is a view showing another embodiment in which the bucket of the earth lifting device of FIG. 2 is replaced with a screw conveyor.

FIG. 6 is a perspective view showing a conventional screw auger propulsion device.

FIG. 7 is a diagram for explaining excavation work by the screw auger propulsion device of FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Grounding stand 14 Rack 20 and 21 Guide shaft 30 Moving table 40 Drive unit 45 Chuck mechanism 52 Manual handle 54 Pinion 60 Electric motor 61 Square shaft 70 Screw auger 72 Screw blade 74 Cutting tip 80 Side hole 90 Lifting device 90a Rake mouth 91 Receiving Gutter 92 Cylindrical body 95 Bucket 95A Screw conveyor 99 Discharge port

Claims (3)

(57) [Claims] 1. A screw auger of a required length is provided by a chuck mechanism provided on a movable table movable along a guide shaft on a grounding table of a screw auger propulsion machine installed in a shaft for propulsion. Chucking,
While applying rotational force to the screw auger by a driving force from an electric motor, the screw auger excavates a horizontal hole while sequentially adding the screw auger while performing propulsion into the soil with the movement of the moving table. In the excavation method, a bucket that receives the earth and sand scraped into the shaft by the screw auger by a gutter of an earth lifting device positioned near the horizontal hole to be excavated, and circulates vertically in the earth lifting device. Wherein the earth and sand received by the gutter are scooped and discharged to the ground. 2. Receiving earth and sand scraped into the shaft by the screw auger by a gutter attached to a rake port below a cylinder of the earth-lifting device,
A plurality of buckets attached at a required pitch on an outer peripheral side of a belt wound between pulleys supported on upper and lower portions of the inside of the cylindrical body are rotated by driving the belt while receiving a plurality of buckets received by the gutter. Scoop up the earth and sand,
The side hole excavation method using a screw auger according to claim 1, wherein the hole is discharged to the ground from a discharge port above the cylindrical body. 3. A screw auger of a required length is provided by a chuck mechanism provided on a movable table movable along a guide shaft on a grounding table of a screw auger propulsion machine installed in a shaft for propulsion. Chucking,
While applying rotational force to the screw auger by a driving force from an electric motor, the screw auger excavates a horizontal hole while sequentially adding the screw auger while performing propulsion into the soil with the movement of the moving table. In the excavation method, the earth and sand scraped into the shaft by the screw auger is received by a gutter of an earth lifting device positioned near the horizontal hole to be excavated, and is disposed vertically in the earth lifting device. A method of excavating a horizontal hole with a screw auger, wherein the soil conveyed by the gutter is picked up by a screw conveyor and discharged to the ground.