JPH11141256A - Horizontal hole drilling machine for pit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the constructing property by connecting a drilling machine body to a suspension device suspended within a pit, and fixing it in a plurality of height positions within the pit to perform a drilling. SOLUTION: The wire rope of a crane is connected to a suspension part 110 to suspend a drilling machine in a desired height within a pit. A drilling machine body 400 is turned together with a cage 200 to a drilling direction by a turning means 120, and the body 400 is rocked together with the cage 200 to a desired drilling angle by a rocking means 140. The leg part 302 of a fixing means 300 is pressed onto the pit side wall to fix the body 40 together with the cage 200 within the pit, and a horizontal hole is drilled by the body 400. When the drifter 420 of the body 400 is advanced to the front end of a guide cell 403 according to the drilling, a rod 430 supplied from a rod supplying device 500 is joined thereto to drill the hole further deeply. Thus, horizontal holes can be efficiently and collectively excavated in a plurality of heights after the excavation of a pit without interrupting the excavation of the pit every excavating height of horizontal hole.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a horizontal hole drilling machine for vertical shafts for drilling holes in grounds lateral to a vertical shaft.

[0002]

2. Description of the Related Art As a method of forming an underground foundation such as a transmission line tower or a bridge foundation, a shaft is excavated, an anchor rod or the like is driven from the shaft into a lateral ground, and concrete is poured into the shaft. There is known a method of forming a deep foundation with high foundation strength without increasing the volume of the foundation.

[0003] As a horizontal hole drilling machine for drilling a hole from a shaft into a ground on the side to form such a deep foundation, one proposed in Japanese Patent Application Laid-Open No. Hei 8-199960 is known. Have been. This horizontal hole drilling machine connects the both ends of the fixed base to the liner plate forming the side wall of the shaft, extends the outrigger, and performs drilling work in a state where it is installed at the bottom of the shaft. It is supported via a turntable that can pivot with respect to the fixed base and an angle adjusting mechanism that adjusts the drilling angle, and thereby, it is possible to drill at any drilling angle in the entire circumferential direction of the shaft. It is configured as something.

[0004]

However, since this horizontal hole drilling machine is installed at the bottom of a pit, it can drill only at a height near the bottom of the pit.

Therefore, when attempting to drive the anchor rods at a plurality of height positions in the shaft using this horizontal hole drilling machine, the excavation work is temporarily interrupted at the stage when the shaft is dug to the depth at which the anchor rods are driven. Then, the shaft excavator is carried out from the shaft, and the horizontal hole drilling machine is carried in. Instead, it is installed at the bottom of the shaft at this time, the horizontal hole is drilled, and the anchor rod is inserted. It is necessary to repeat a series of operations of carrying out the drilling machine from the shaft, carrying in the shaft excavator instead, and proceeding with the excavation work of the shaft again. For this reason, unloading and loading operations of the shaft excavator and the horizontal hole drilling machine have to be performed many times, resulting in poor efficiency.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides a horizontal hole drilling machine for a shaft which can efficiently perform horizontal hole drilling operations at a plurality of height positions. The purpose is to do.

[0007]

Means for Solving the Problems As means for solving the above-mentioned problems, the invention of claim 1 is directed to a drilling machine main body and a suspension unit for connecting the drilling machine main body to a suspension device suspended in a shaft. And fixing means for fixing the drilling machine body suspended in the shaft in the shaft.

According to the present invention, the drilling machine main body for drilling a horizontal hole is suspended in a shaft by a suspension device, and performs a hole drilling operation on the horizontal hole while being fixed in the shaft by a fixing means.
Therefore, by raising and lowering the drilling machine main body in the shaft by the suspension device, the horizontal hole is drilled at an arbitrary height position without being limited to the vicinity of the shaft bottom of the shaft. Further, at the time of drilling, the drilling operation is stably performed by fixing the drilling machine main body in the shaft by the fixing means.

According to a second aspect of the present invention, in the configuration of the first aspect, the fixing means is configured to press at least two points on the side wall of the shaft.

According to the present invention, the drilling machine body suspended in the shaft can be easily fixed at an arbitrary height position by the fixing means.

According to a third aspect of the present invention, in the configuration of the first or second aspect, the fixing means includes two legs extending in a front-rear direction on a straight line parallel to a drilling direction of the drilling machine main body, And a jack for extending these legs.

In the present invention, the two legs are driven by the jack portion to extend toward the front and rear side walls in the drilling direction in which the greatest force acts by the drilling operation to press the side walls. Improves the stability of the drilling machine body during work.

According to a fourth aspect of the present invention, in the configuration according to any one of the first to third aspects, there is provided a turning means for turning the drilling machine main body in all directions along a substantially horizontal plane.

According to the present invention, the drilling machine main body can be directed in the entire circumferential direction in the shaft by the turning means,
Since the suspension unit to which the suspension unit is connected can be positioned at an arbitrary height position in the shaft, according to this horizontal hole drilling machine, the horizontal hole is drilled at an arbitrary position in the shaft.

According to a fifth aspect of the present invention, in the configuration according to any one of the first to fourth aspects, a swinging means for swinging the drilling direction of the drilling machine body in a vertical plane is provided. is there.

In the present invention, since the drilling direction of the drilling machine main body can be rocked by the rocking means, a horizontal hole is drilled at an arbitrary drilling angle, for example, obliquely downward. .

According to a sixth aspect of the present invention, in the configuration according to any one of the first to fifth aspects, there is provided a cage on which the drilling machine main body and the fixing means are mounted, and the suspension portion is attached to the cage. It is a thing.

In the present invention, since the drilling machine main body and the fixing means are mounted on the cage, the drilling machine main body is fixed together with the cage by the fixing means, and the drilling machine is cut via the suspension portion connected to the suspension device. The drilling machine body is suspended along with the cage,
It is raised and lowered by the suspension device.

According to a seventh aspect of the present invention, in the configuration of the sixth aspect, the turning means is disposed so as to be interposed between the suspension portion and the cage.

In the present invention, the drilling machine main body is turned by the turning means together with the cage, and makes a horizontal hole in all directions along a substantially horizontal plane.

According to an eighth aspect of the present invention, in the configuration of the sixth or seventh aspect, the swinging means is disposed so as to be interposed between the suspension portion and the cage.

In the present invention, the drilling machine main body is rocked by the rocking means together with the cage, and drills the horizontal hole at an arbitrary drilling angle.

According to a ninth aspect of the present invention, in the configuration according to the eighth aspect, an intermediate member is provided between the suspension portion and the cage, and the turning means can pivot the intermediate member with respect to the suspension portion. Swinging means for swinging the intermediate member about the swing axis, and swinging means for swingably supporting the cage with respect to the intermediate member. Rocking drive means mounted between a shaft and the intermediate member and a front portion of the cage upper portion, the rocking drive means for rocking the cage about the rocking shaft by expanding and contracting the distance between the mounting portions; It is provided with.

According to the present invention, since the pivoting means pivots the intermediate member with respect to the suspension, and the swinging means pivots the cage with respect to the intermediate member, the cage is pivotally driven and pivoted with respect to the suspension. Drive.

According to a tenth aspect of the present invention, in the configuration according to any one of the first to ninth aspects, a plurality of rods are housed, and the plurality of rods are supplied one by one to the drilling machine main body. It is equipped with a device.

According to the present invention, the rod is supplied to the drilling machine main body by the rod supply means, so that once the horizontal hole drilling machine is carried into the shaft, the horizontal hole drilling machine is not carried out of the shaft, for example. By adding rods, a horizontal hole having a depth corresponding to the length of a plurality of rods can be drilled, or a horizontal hole can be drilled at a plurality of locations.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a shaft excavator for a shaft according to the present invention will be described with reference to FIGS.

1 to 3 are a front view, a side view and a plan view of the inside of a cage of the drilling machine. In these figures, A is a shaft excavated in a circular cross section. This drilling machine,
Fixing means 300, drilling machine main body 400 and rod feeder 500, and cage 200 on which these are mounted,
Furthermore, it is attached to the upper part of the cage 200, and the cage 20
0 is connected to a suspension device (not shown), and further includes a cage driving unit 100 that turns and swings.

In the following description, the drilling direction of the drilling machine main body 400 is defined as the front-rear direction,
In the description of 0, the side facing the drilling machine main body 400 is expressed as the front side and the opposite side is expressed as the rear side when viewed in the direction orthogonal to the drilling direction.

First, the cage driving unit 100 will be described with reference to FIG.
This will be described with reference to FIG.

The cage driving unit 100 is suspended at a bracket 110 at an upper end by engaging with a wire rope from a suspension device such as a crane (not shown). That is, the bracket 110 is a suspension portion connected to the suspension device. A downwardly extending shaft (rotating shaft) 122 is attached to the bracket 110, and the shaft 122 penetrates the shaft case 128 rotatably with respect to the shaft case 128 by an inner race 124 and a thrust plate 126. Shaft 13 of a rotary actuator (turning drive means) 132 such as a hydraulic motor via a flex coupling 130
4 is connected. This rotary actuator 132
Are stored in a state fixed to the actuator case 136.
Has its upper surface connected to the lower surface of the shaft case 128.

Therefore, the rotary actuator 13
2, the flex coupling 130
With respect to the bracket 110 connected to the turning shaft 134 of the rotary actuator 132 via the shaft 122 and the shaft 122, the actuator case 136 in which the rotary actuator 132 is stored in a fixed state and the shaft case 128 connected thereto are Turn.

The above-mentioned shaft 122, rotary actuator 132, and other members that perform a turning drive operation on the bracket 110 constitute turning means 120.

The actuator case 136 and the shaft case 1 which are turned by the turning means 120 are also provided.
Reference numeral 28 denotes an intermediate member provided between the suspension unit 110 and the cage 200.

A connecting piece 142 is provided below the actuator case 136. A swing shaft hole is formed at a substantially central portion of the connecting piece 142, and the swing shaft 144 penetrates the swing shaft hole. Further, the swing shaft 144 is connected to the cage 20.
0, a connecting piece 2 provided substantially at the center of the upper frame 202.
The cage 200 is swingably connected to the suspension 100 in the vertical plane including the front-rear direction.

The front of the connecting piece 142 and the cage 20
A swing hydraulic cylinder (swing drive means) 146 is rotatably mounted at both ends between the cylinder bracket 206 and a cylinder bracket 206 provided at a front portion of the upper surface of the upper frame 202. Therefore, the swing hydraulic cylinder 1
By the extension operation of 46, the cage 200 swings in an arbitrary direction in the vertical plane with respect to the cage driving unit 100.

The above-mentioned swing shaft 144, swing hydraulic cylinder 146, intermediate member consisting of the actuator case 136 and the shaft case 128,
Each member that drives the zero to rock constitutes a rocking means 140.

The cage driving unit 10 configured as described above
No. 0 indicates that the cage 200 is suspended at an arbitrary height position by a suspension device via a suspension portion (bracket) 110, is pivoted in any direction in a horizontal plane by a pivoting means 120, and is pivoted in a vertical plane by a swinging means 140. Can swing in any direction.

As shown in FIGS. 1 to 3, the cage 200 has a substantially rectangular parallelepiped frame, and includes the above-described upper frame 202, a hanger frame 210 extending downward from the four corners, and a hanger frame 210. And a base frame 212 attached to the lower end of the base 210.

On the base frame 212, a drilling machine main body 400 for drilling a horizontal hole and a rod supply device 500 for supplying a rod to the drilling machine main body 400 are mounted. Has fixing means 3
00 is mounted.

Next, the fixing means 300 will be described.

As shown in FIGS. 1 and 2, one fixing means 300 is disposed at the front and rear of the drilling machine main body 400 mounted on the base frame 212. It comprises a portion 302 and a jack portion 304 for extending the leg portion 302. The leg 302 is connected to the drilling machine main body 40 by a jack 304.
0, and pushes the side wall with its tip part biting into the side wall as shown by the two-dot chain line in FIG. Fix 200.

As described above, since the fixing means 300 fixes the cage 200 by pressing the side wall of the shaft A, as long as the leg 302 reaches the side wall of the shaft A within the range of its extension stroke. The cage 200 can be fixed without being greatly affected by the position and inclination of the cage 200 in the shaft. In particular, the leg 302
Presses the front and rear side walls of the drilling machine main body 400 in the drilling direction, so that it exerts a strong supporting force against the vibration and impact force in the drilling direction, and the cage 200 is fixed.

The drilling machine main body 400 mounted on the base frame 212 above the fixing means 300
This will be described with reference to FIGS.

The drilling machine main body 400 includes a guide cell 402 installed on the base frame 212 in the front-rear direction.
A rod support portion 404 provided in front of the guide cell 402; a drifter 420 mounted on the guide cell 402 so as to be slidable in the front-rear direction; A pneumatic feed motor 406 arranged behind the guide cell 402 for sliding drive
And a rod 430 supported by the rod support portion 404.

The rod 430 is configured to have a length shorter than the slide drive stroke of the drifter 420 on the guide cell 402, and a drill bit 434 such as a button bit, a spike bit, or a cross guide track bit is attached to a tip of the rod 430. There are two types of head rods 431 and extension rods 432 each having a distal end joint portion 436 for connecting to another rod 430 at the distal end. Both of these are provided at the rear end with the rod mounting portion 422 of the drifter 420.
Or the rear end joint 4 to be connected to the front joint 436 of the extension rod 432.
38 are formed. Normally, since the leading rod 431 and the rear end joint 438 of the extension rod 432 are formed in a female screw shape, the distal joint 436 of the extension rod 432 is formed in a male screw type. Hereinafter, when there is no need to distinguish between the leading rod 431 and the extension rod 432, they are collectively treated as the rod 430.

The rod 430 is connected to the drifter 420 at the joint 438 and the guide cell 40
2 is supported by the rod support 404 at the front. The drifter 420 is connected to the rod 43 via the joint 438.
The drilling of the ground is performed by giving a striking force or a rotating force to zero. The rod support portion 404 supports the rod 430 by sandwiching it from the left and right. The rod support portion 404 is configured to be able to sandwich the rod 430 weakly and hold it, and to firmly sandwich the rod 430 and fix it.

It is difficult to use a rod 430 having a length exceeding the diameter of the shaft in such a horizontal hole drilling machine. A plurality of extension rods 432 are added to the rod 431 to perform drilling. Also, in the above-described method of forming a deep foundation, when a horizontal hole is drilled at a plurality of positions in a shaft and the rod 430 used for the drilling is left in the ground as it is and used as an anchor bolt, a plurality of holes may be used. Rod 43
It is necessary to supply 0 to the drilling machine main body 400. For this reason, this horizontal hole drilling machine is provided with a rod supply device 500 that stores a plurality of rods 430 and supplies the rods 430 to the drilling machine main body 400.

Next, the rod supply device 500 will be described.

As shown in FIG. 2, the rod supply device 500 includes a rod magazine 51 for storing a rod 430.
0 from the rod magazine 510
A rod feeder 55 that supplies rods 430 one by one
0.

The rod magazine 510 is set on a pedestal 512 fixed on the base frame 212. A front stand 514 and a rear stand 516 are erected on the pedestal 512 so as to oppose each other in the drilling direction before and after. As shown in FIGS. 3 and 7, a rear plate 518 is attached to the rear side of the two rear stands 516, and a pair of front and rear upper wheels 520 is rotatably supported on the upper part of the rear stand 516. Have been. A lower wheel 522 is rotatably supported on the pedestal 512 below each of the upper wheels 520, and the two front and rear lower wheels 522 are connected by a connection shaft 542 so as to rotate in conjunction with each other. I have.

As shown in FIG. 5, between the upper and lower wheels 520 and the lower wheel 522, chains 524 each formed in an annular shape are laid, and the lower and front wheels 522 are interlocked. From rotating
The front and rear chains 524 are also driven in conjunction with each other. The front and rear chains 524 are a front annular member and a rear annular member.

A plurality of rod holders 526 provided with notches having a U-shaped cross section are mounted at equal intervals on the front and rear chains 524 for mounting the rods 430. This rod holder 526 is used for the chain 5
The rod 430 is mounted on the front side of the front and rear chains 524 at the front of the front and rear chains 524 on the rod holder 526 located at the same height. And the rear part is supported and stored. The number of rods 430 that can be stored in the rod magazine section 510 depends on the length of the chain 524, that is,
The distance between the upper wheel 520 and the lower wheel 522 can be arbitrarily set by appropriately determining the distance between the upper wheel 520 and the lower wheel 522. In this embodiment, the configuration is such that 20 rods 430 can be stored.

Since the rod 430 housed in this manner is merely placed on the rod holder 526, the rod 430 is prevented from falling off from the rod holder 526, so that the back side of the housed rod 430 can be prevented. The front side is provided by a rear side rod guide 528 protruding from the back side plate 518 to the front side, and the front side is provided by a front side rod guide 530 fixed to three horizontal frames 538 attached to front and rear front side stands 514. The front and rear sides are surrounded by a front rod guide 532 and a rear rod guide 534 attached to the front stand 514. For this reason, when vibration is applied to the rod magazine 510, or in particular, when the cage 200 is rocked by the rocking means 140, the rod magazine 5
The rod 430 is stably housed even when 10 is inclined.

The rod 430 housed on the rod holder 526 is moved from the rod magazine 510 to the rod magazine 510.
To take out books one by one, or use the rod magazine 510
The rod magazine section 510
The lower wheel 52 spanned by the chain 524
2 is provided with a rotation driving means 540 for driving the rotation of the rotating member 2. The rotation of the lower wheel 522 is driven by a chain 524.
And an operation to feed and drive the rod holder 526 attached to the chain 524 in the up-down direction, the chain 524, the upper wheel 520, and the lower wheel 52.
2 and the rotation driving means 540 constitute a rod holder feeding means.

As shown in FIGS. 7 and 8, the rotation driving means 540 rotates a connection shaft 542 connecting the two front and rear lower wheels 522, thereby forming a chain hung on the lower wheel 522. 524, which is located substantially at the center of the connection shaft 542 and is mounted on the pedestal 512. This rotation driving means 54
0 is a ratchet gear 546 fixed to the connection shaft 542.
An upper ratchet 547 and a lower ratchet 548 that engage with the pawl of the ratchet gear 546; a rod holder feed hydraulic cylinder 544; and a ratchet lever 545 whose one end is rotatably attached to the rod holder feed hydraulic cylinder 544. And a cam clutch 543 for intermittently connecting the other end of the ratchet lever 545 and the connecting shaft 542.

The upper ratchet 547 and the lower ratchet 548 are both rotatably attached to a bracket 541 erected at a substantially central portion on a pedestal 512.
One end is formed with a pawl that engages the ratchet gear 546, and the pawl is urged by a spring 549 in a direction away from the ratchet gear 546. Pressing portions are formed at the other ends of the upper ratchet 547 and the lower ratchet 548. By pressing these, the pawl portion and the ratchet gear 546 are engaged, and the connecting shaft 542 and the lower wheel 522 are moved. The downward drive of the chain 524 on the front side (hereinafter, this direction is referred to as a “positive direction”) is restricted via the front side.

Rod holder feed hydraulic cylinder 544
Is rotatably attached to a bracket 541, and swingably drives a ratchet lever 545 attached to an end thereof around a connection shaft 542 by expansion and contraction driving thereof. The pressing portion of the lower ratchet 548 is pressed, and the rotation of the ratchet gear 546 and thus the connection shaft 542 is stopped.

The cam clutch 543 connecting the ratchet lever 545 and the connecting shaft 542 is connected to the ratchet lever 5.
It is configured to transmit only the positive rotational drive force from the rotary drive 45. Therefore, the connecting shaft 542 idles by the extension operation of the rod holder feed hydraulic cylinder 544, but the connecting shaft 542 is driven to rotate in the forward direction by the contraction operation.

The rod feeding section 550 is provided one by one from the rod magazine section 510 constructed as described above.
0 to take out the rod 430, a chuck 590 for gripping the rod 430 taken out by the rod taking out section 560, and moving the chuck 590 to move the rod 430 together with the chuck 590 together with the drilling machine main body 40.
And a rod feeding arm 570 that carries the rod to the center.

As shown in FIG. 5, the rod take-out section 560 includes two inclined plates 562 arranged below the rod magazine section 510, and a stopper 564 arranged at the front end of each inclined plate 562. It is composed of As shown in FIG. 9, each inclined plate 562 has its rear end located below the rod 430 housed in the rod magazine 510 and slightly below the height of the center of the lower wheel 522. And each inclined plate 5
A downward slope from the back side to the front side is formed at the upper edge of 62. The stopper 564 is provided so as to protrude upward at the lowermost portion of the downward slope, and forms the chuck position Y together with the inclined plate 562.

A rod feeding arm 570 is arranged above the chuck position Y.

The rod feeding arm 570 feeds the rod 430 at the chuck position to the rod feeding position of the drilling machine main body 400. As shown in FIGS. The upper arm 572 attached to the part 510 and the rod 4
Chuck section 590 for performing a rod chucking operation for gripping 30
And a lift frame 580 to which is attached.

The upper part of the upper arm 572 is formed as an arm transfer shaft 574.
4 at both ends of the horizontal frame 5 at the center of the rod magazine portion 510.
38 is rotatably attached. The arm transfer shaft 574 has a protruding portion 57 at the center at the center thereof.
6 is provided, and the tip of the protrusion 576 is attached to an arm transfer hydraulic cylinder 578 attached to the horizontal frame 538 on the upper side of the rod magazine 510. Therefore, the upper arm 572 moves the rod magazine 51 by the expansion and contraction operation of the arm transfer hydraulic cylinder 578.
For 0, the arm transfer operation can be performed toward the front side of the rod magazine section 510. That is, the upper arm 572 and the arm transfer hydraulic cylinder 57
8 and the like constitute an arm transfer mechanism.

The lift frame 580 is attached to the lower center of the upper arm 572 via an arm telescopic hydraulic cylinder 582 provided at the center thereof.
A slide rod 584 provided upward in the vicinity of both ends thereof penetrates a cylindrical slide shifter 586 provided in the vicinity of both ends of the upper arm 572. The slide rod 584 and the slide shifter 586
Guides the vertical drive operation of the lift frame 580 with respect to the upper arm 572. With this guide, the lift frame 580 can perform the arm extension and contraction operation by the extension and contraction operation of the arm extension and contraction hydraulic cylinder 582. That is, the lift frame 580, the arm extendable hydraulic cylinder 578, and the like constitute an arm extendable mechanism.

The chuck portions 590 are attached to both ends of the lift frame 580, one at a time, facing downward. As shown in a cross-sectional view of FIG. 9, the chuck portion 590 holds the rod 430 by two claws 592 and 592 each having a cut portion having a U-shaped cross section. These two claws 592, 59
2 is provided with a pivot hole at the center of the upper part. When the pin 596 passes through the pivot hole together with the chuck case 594, the two claws 592 and 592 are moved relative to the chuck case 594. It is attached so as to be rotatable about a pin 596. Also, this claw 592,5
Reference numeral 92 denotes an upper portion on the side where the "-"-shaped notch is formed, which is rotatably connected to one end of each of links 598, 598. The other ends of the two links 598, 598 are both rod chuck hydraulic pressures. It is rotatably connected to the cylinder 599. Therefore, the link 598, the link 598,
The two claws 592 and 592 and the link 59 via 598
8,598 is driven up and down, and the tab 59
Since the upper center of 2,592 is fixed to the chuck part case 594, the claws 598,598 are in a closed state in which the rod 430 is grasped by a solid line in FIG. Take. Further, when the chuck portion 590 is in the closed state, the chuck portion 590 is strongly gripped so as to be fixed to the chuck portion 590 and the rod 430 is weakly gripped so as to be slidable with respect to the chuck portion 590. It is configured to be able to take. In this weakly gripped state, the rod 430 can rotate or move in the longitudinal direction while being gripped by the chuck portion 590.

The chuck portion 590 holding the rod 430 in this manner can be moved to an arbitrary position within the range of these drives by the arm transfer operation by the arm transfer mechanism of the rod feeding arm 570 and the arm expansion and contraction operation by the arm expansion and contraction mechanism. The rod 430 can be released at any position by grasping a certain rod 430. Further, even when the rod 430 is grasped, the rod 430 is held by the chuck portion 590.
Can be fixed or slidable.

As shown in FIGS. 1 to 3, the above-described drilling machine main body 400 and the rod feeder 5 are placed on the cage 200.
In addition to the hydraulic unit 600, the hydraulic unit 600 is used to perform a swing operation of the swing unit 120, a swing operation of the swing unit 140, and the rod supply device 50.
Supply / discharge of hydraulic pressure to / from each of the 0 hydraulic cylinders is performed.

Next, the operation of the vertical hole drilling machine for a shaft configured as described above will be described.

This horizontal hole drilling machine can be used not only for the above-mentioned method of forming a deep foundation, but also for the method of mounting a shaft of a shaft for carrying materials and the like into a tunnel during tunnel construction or the like. Things.

Here, a description will be given on the assumption that a horizontal hole is drilled at seven locations in a shaft which can be applied to any of these methods. Each side hole has two
A total of three rods 4 by adding two additional rods 432
A desired depth is obtained by 30 and the rod 430 used for drilling is left as it is in the drilled horizontal hole and used as an anchor rod.

As a pre-stage for using this drilling machine, a shaft is excavated. This excavation work is that the drilling machine according to the present invention can perform horizontal hole drilling work not only near the bottom of the shaft but also at a suspension position of any height,
Without interrupting the excavation work of the shaft at each depth for drilling the horizontal hole, as long as there is no risk of collapse of the shaft side wall,
Excavation can be performed to a desired depth at a time.

First, the rod 430 is set in this drilling machine. This setting operation is performed by the rod feeder 500
A description will be given with reference to FIG.

In FIG. 10, reference numeral 701 denotes a rod input position sensor comprising photoelectric switches, and 702 and 703.
704 is a rod storage position sensor composed of a proximity switch;
Is a chuck position sensor composed of a proximity switch. Further, 711 and 712 are sensors for confirming the operation of the rod holder feed hydraulic cylinder 544, 713 and 714 are sensors for confirming the operation of the rod chuck hydraulic cylinder 599, and 715 and 716 are the operations of the arm telescopic hydraulic cylinder 582. Sensor to confirm the
717 and 718 are arm transfer hydraulic cylinders 578
Is a sensor for confirming the operation of.

The rod 43 to the rod supply device 500
The setting operation of the rod storage position sensor 702
By detecting the absence of the rod 430 at the lowermost stage of the rod magazine section 510 by 703 and 703, the operation is performed by putting the rod 430 into the rod holder 526 located at the uppermost stage. If it is detected by the rod insertion position sensor 701 that the rod 430 has been stored on the uppermost rod holder 526, the chain 524 is driven and driven by the rod holder feed hydraulic cylinder 544 by one pitch p of the rod holder 526, and The next rod holder 526 is sent to the uppermost position of the magazine 510. By repeating the above operation, the rod 430 is set in the rod magazine 510. When the nineteenth rod 430 is set, it is detected by the rod storage position sensor 702 that the storage number is one more. When the twentieth rod 430 is set, the rod storage position sensor 703 detects that the storage number is full. In this manner, 20 rods 430 are accommodated in the rod magazine section 510. The first rod 430 is set in the drilling machine main body 400 by the rod feeding section 550 from the rod magazine section 510 according to a procedure described later. A total of 21 rods 430 are set in this drilling machine, including one of the drilling machine main body 400 and 20 of the rod magazine units 510.

Here, each lateral hole is formed by three rods 4.
As shown in FIG. 5, the rod 430 to be set includes a first rod, a fourth rod, and a seventh rod.
The leading rod 431 with the excavation tool 434 attached to the tip of every third rod,..., And the other second rod, third rod, fifth rod, sixth rod,.
The extension rod 432 is provided with a distal end joint 436 for connecting to the extension rod 432.

Next, as shown in FIG. 1, a wire rope from a suspension device such as a crane is connected to a suspension portion (bracket).
110, and the suspension device suspends the drilling machine at a level where a horizontal hole in the shaft is drilled. Then, the rotary actuator 132 constituting the turning means 120
To rotate the drilling machine main body 400 together with the cage 200 in a substantially horizontal plane so as to direct the drilling machine in any direction among all the circumferential directions in the shaft to perform drilling, and to form the hydraulic cylinder 146 constituting the rocking means 140. Is driven to swing the drilling machine main body 400 together with the cage 200 so that the drilling machine body 400 is directed to an arbitrary drilling angle.
If the drilling direction of the drilling machine main body 400 is oriented in a desired direction in this way, the jack portion 3 constituting the fixing means 300
The drilling machine main body 400 is fixed together with the cage 200 in the shaft by driving the head 04 and pressing the tip of the leg 302 against the side wall of the shaft. In the state where the cage 200 is fixed in the shaft, the boring machine main body 400 drills a horizontal hole.

Hereinafter, a step of excavating one horizontal hole will be described with reference to FIG.

Drilling is performed by a leading rod 431 having a drilling tool 434 attached to the tip. In the drilling start state, the leading rod 431 is
Is weakly sandwiched and supported by a rod support portion 404 at the front of the vehicle, and a rear end thereof is connected to a rod mounting portion 422 of the drifter 420 (see FIG. 11A). The rod support portion 404 stabilizes the drilling direction, and the drifter 420 provides a striking force and a rotational force for drilling. The drifter 420 is fed and driven by the pneumatic feed motor 406 along the guide cell 402, and the leading rod 431 is fed into the ground with the feed drive of the drifter 420 (see FIG. 11B).

When the drifter 420 is fed and driven to the front end position of the guide cell 402 in this way, the rod 430 is extended in order to drill deeper.

In this extension operation, first, the rear end joint portion 438 of the front rod 431 inserted into the ground.
Is strongly gripped and fixed by the rod support portion 404 in front of the guide cell 402, and in this state, the rod mounting portion 422 of the drifter 420 is connected to the rear end joint portion 4 of the front rod 431.
38, and rotate the head rod 43
1 is removed from the drifter 420. Head rod 431
The drifter 420 from which is removed is retracted on the guide cell 402 by the pneumatic feed motor 406 to the rearmost end. In this manner, the extension rod 4 is connected between the rear end joint portion 438 of the front rod 431 and the drifter 420.
A rod set position X for supplying the nozzle 32 is formed (see FIG. 11C).

Next, a procedure for supplying the rod 430 to the rod setting position X from the rod supply device 500 will be described with reference to FIGS. 9 and 10. This rod supply procedure is performed not only at the time of rod extension work, but also at the time of the leading rod 43.
The setting is also performed in the same manner as described above, and is not limited to the extension rod 432, and the rod 430 including the leading rod 431 will be described.

After the rod storage position sensor 703 confirms that the rod 430 is at the lowermost stage of the rod magazine 510, the rod holder feed hydraulic cylinder 544
Is driven by one pitch p of the rod holder 526. By the feed drive of the chain 524, the lowermost rod holder 526 sinks below the inclined plate 562 when viewed from the horizontal direction, as shown by a two-dot chain line in FIG. Rod 43 on 526
0 is left on the tilt plate 562 and the tilt plate 5
The stopper 564 is rolled to the front side by the inclination of 62.
, And reaches the chuck position Y.

After confirming that the rod 430 is at the chuck position Y by the chuck position sensor 704,
With the claw 592 of the chuck portion 590 opened, the rod supply arm 570 is moved by the arm telescopic hydraulic cylinder 582.
Is extended, the chuck portion 590 is driven to the chuck position Y, the claws 592 of the chuck portion 590 are closed by the rod chuck hydraulic cylinder 599, and the rod 430 at the chuck position Y is gripped. In this state, the rod feeding arm 570 is contracted by the arm telescopic hydraulic cylinder 582, and the rod feeding arm 570 is contracted by the arm transfer hydraulic cylinder 578.
To the front side, and again the arm telescopic hydraulic cylinder 58
The rod feeding arm 570 is extended by 2 to support the rod 430 at the rod setting position X of the drilling machine main body 400 (see FIG. 11D).

Returning to FIG. 11, the rod 4
When the rod 32 is supported at the rod setting position X, the pneumatic feed motor 406 advances the drifter 420, adds the rod mounting part 422 of the drifter 420, inserts the rod 432 into the rear end joint part 438 of the rod 432 while rotating, and connects. (See FIG. 11E). At this time, since the center axis position of the extension rod 432 can be adjusted by driving the rod feeding arm 570 by the arm telescopic hydraulic cylinder 582 and the arm transfer hydraulic cylinder 578, the extension rod 422 of the drifter 420 and the extension rod 422 can be adjusted. Even if there is a deviation from the center axis position of 432, this deviation can be easily corrected.

When the extension rod 432 is connected to the rod mounting portion 422 of the drifter 420, the chucking force of the chuck portion 590 is reduced by the rod chuck hydraulic cylinder 599, and the extension rod 432 is rotatably supported. While rotating the rod attachment portion 422 of the drifter 420 and the extension rod 432 connected thereto, the pneumatic feed motor 406 further moves the drifter 420 forward so that the distal end joint portion 436 of the extension rod 432 is connected to the leading rod 431. Rear joint 438
And the top rod 431 is extended and connected to the rod 432 (see FIG. 11F).

When the leading rod 431 and the extension rod 432 are connected, the claw 592 of the chuck portion 590 is opened by the rod chuck hydraulic cylinder 599 to extend and release the rod 432, and the rod feeding arm 570 is extended by the arm telescopic hydraulic cylinder 582. And the rod feeding arm 570 is returned to the original position by the arm transfer hydraulic cylinder 578. Further, the rod support 4 in front of the guide cell 402
04 to reduce the force to grip the top rod 431
The drilling operation is performed again from the state in which the base 31 is fixed to the state in which it is supported. By repeating such supply and extension work of the extension rod 432, the horizontal hole is drilled to a depth of three rods.

When the drilling by the three rods 430 is completed, the rod 430 is moved to the drifter 42 by the above-described procedure.
The rod 430 is released from the zero rod mounting portion 422, and the three connected rods 430 are left in the horizontal holes as anchor rods. After that, the fixing means 300 is released, and the work of drilling one horizontal hole is completed.

After changing the suspension height position by the suspension device, changing the drilling direction in a substantially horizontal plane by the turning means 120, or changing the drilling angle by the rocking means 140, the following is performed. The head rod 431 is set, and the above procedure is repeated to perform the next hole drilling operation.

As described above, since this horizontal hole drilling machine holds 21 rods 430, three rods 43
In the case where one horizontal hole is drilled by passing 0, seven horizontal holes can be continuously drilled without replenishing the rod 430 from the outside.

The present invention has been described with reference to the embodiment. However, the present invention is not limited to the above embodiment, and may be configured as follows.

(1) In the above embodiment, the drilling machine main body 40
0 to supply a plurality of rods 430
Rod supply device 50 for vertically stacking and housing 30
However, the configuration of the rod supply device 500 is not limited to such a configuration, and for example, may include a columnar rod supply device as shown in FIG. This columnar rod supply device has one rod 43 each.
By rotating a columnar rod magazine portion main body 801 provided with a plurality of rod storage holes 802 in which a plurality of rods 430 are stored, the stored rods 430 are fed one by one onto a drilling axis 805 of a drilling machine main body 400. , And the rod 430 is added. Alternatively, the rod 430 may be supplied manually without providing such a rod supply device.

(2) In the above embodiment, the turning means 12
The rocking means 140 is configured to rotate or rock the entire cage 200 on which the drilling machine main body 400 and the like are mounted, but the cage 200 is fixed at an appropriate position in the shaft, and the cage 200 is fixed. The above configuration may be such that only the drilling machine main body 400 is turned or rocked.

(3) In the above embodiment, the fixing means 300
Is configured to fix the drilling machine main body 400 by pressing the shaft shaft side wall. However, a configuration in which the drilling machine main body 400 is fixed by engaging with an engaging portion provided on the shaft shaft side wall, The drilling machine main body 400 may be fixed by bolting or the like. Also,
Even if the drilling machine main body 400 is configured to be fixed by pressing the shaft shaft side wall, the size and shape of the leg portion 302 that contacts the shaft shaft side wall can be arbitrarily set according to the state of the shaft shaft side wall. You may. For example, the leg portion 302 may be formed in a conical shape that can easily bite into the side wall, or may be configured such that an elastic body such as rubber is attached to the tip of the leg portion. Alternatively, the fixing means 300 for pressing the shaft shaft side wall may be used together with the fixing means for engaging with the engaging portion of the shaft shaft side wall.

[0095]

As described above, according to the present invention, since the drilling operation is performed while the drilling machine main body is suspended in the shaft, the suspension device raises and lowers the drilling machine main body, and thereby the shaft is drilled. It is not limited to the vicinity of the pit bottom, and it is possible to drill a horizontal hole at an arbitrary height position. Therefore, in the case of drilling a horizontal hole at a plurality of height positions in the shaft, without interrupting the excavation work of the shaft for each depth at which the horizontal hole is drilled,
After excavating the shaft to a desired depth, the horizontal holes can be drilled at a plurality of height positions at once, so that a shaft having a plurality of horizontal holes can be efficiently formed.

Further, according to the second aspect of the present invention, since the fixing means is configured to press the side wall of the shaft, the drilling machine body can be fixed at an arbitrary position in the shaft by the fixing means. The drilling operation can be performed while the drilling machine body is stabilized.

In particular, according to the third aspect of the present invention, the fixing means is configured to press the front and rear side walls in the drilling direction where the greatest force acts upon drilling to fix the drilling machine main body. Therefore, the stability of the drilling machine main body at the time of drilling can be further enhanced.

According to the fourth aspect of the present invention, the drilling machine main body can be directed in the entire circumferential direction in a substantially horizontal plane by the turning means, and the suspension device to which the suspension portion is connected can have an arbitrary height. Because it can be located in the position,
According to this horizontal hole drilling machine, a horizontal hole can be drilled at an arbitrary position in a shaft.

According to the fifth aspect of the present invention, the drilling direction of the drilling machine main body can be rocked by the rocking means. Drilling of holes can be performed.

According to the tenth aspect of the present invention, the rod supply means of the horizontal hole drilling machine houses a plurality of rods,
Since this rod supply means supplies the rod to the drilling machine main body, drilling of a deep horizontal hole by adding a plurality of rods and drilling of a plurality of horizontal holes at a plurality of locations in a shaft are performed horizontally. Once the hole drilling machine is carried into the shaft, the operation can be performed without removing the horizontal hole drilling machine from the shaft. Therefore, such a hole drilling operation can be performed more efficiently.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a horizontal hole drilling machine for a shaft according to the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a plan view of the same.

FIG. 4 is a side view of the cage driving unit 100.

5 is a perspective view of the rod supply device 500. FIG.

FIG. 6 is a side view of the same.

FIG. 7 is a plan view of the same.

FIG. 8 is a front view of a rotation driving unit 540 of the rod supply device 500.

FIG. 9 shows a rod chuck portion 59 of the rod supply device 500.
0 is an enlarged front view of FIG.

FIG. 10 is an explanatory diagram of a sensor system and a hydraulic system of a rod supply device 500.

11 is an explanatory diagram of a rod supply operation of the rod supply device 500. FIG.

FIG. 12 is a perspective view of a cylindrical rod supply device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 100 Cage drive part 110 Suspension part (bracket) 120 Swivel means 140 Swing means 200 Cage 300 Fixing means 302 Leg part 304 Jack part 400 Drilling machine main body 402 Guide cell 420 Drifter 430 Rod 500 Rod supply device 510 Rod magazine part 550 Rod Feeding unit 600 Hydraulic device

Claims (10)

[Claims] 1. A drilling machine main body, a suspension portion for connecting the drilling machine main body to a suspension device suspended in the shaft, and fixing means for fixing the drilling machine body suspended in the shaft in the shaft. A horizontal hole drilling machine for shafts, comprising: 2. The shaft drilling machine for a shaft according to claim 1, wherein the fixing means is configured to press at least two points on the side wall of the shaft. 3. The fixing means comprises: two legs extending in a front-rear direction on a straight line parallel to a drilling direction of the drilling machine main body; and a jack portion for driving these legs to extend. The shaft excavator for a shaft according to claim 2, characterized in that: 4. The horizontal hole drilling for a shaft according to claim 1, further comprising a turning means for turning the drilling machine body in a circumferential direction in a substantially horizontal plane. Machine. 5. A swinging means for swinging a drilling direction of the drilling machine main body in a vertical plane.
The vertical hole drilling machine for shafts according to any one of the above-mentioned items. 6. The shaft according to claim 1, further comprising a cage on which the drilling machine main body and the fixing means are mounted, wherein the suspension unit is attached to the cage. Hole drilling machine. 7. The shaft excavator for a shaft according to claim 6, wherein the turning means is disposed so as to be interposed between the suspension portion and the cage. 8. The shaft drilling machine according to claim 6, wherein the swinging means is disposed so as to be interposed between the suspension portion and the cage. 9. An intermediate member is provided between the suspension portion and the cage, wherein the turning means pivotally supports the intermediate member so as to be pivotable with respect to the suspension portion, and pivots the intermediate member. Swing drive means for swing drive about an axis, wherein the swing means swingably supports the cage so as to swing with respect to the intermediate member, and a front part of the intermediate member and the cage upper part 9. A swing drive means attached to the cage, and swinging the cage about the swing axis by expanding and contracting the distance between the attachment portions. Horizontal hole drilling machine for shafts. 10. A rod supply device for accommodating a plurality of rods and supplying the plurality of rods one by one to the drilling machine main body. Horizontal hole drilling machine for shafts.