JPH10148088A - Shaft boring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a boring device convenient for the excavation of a deep shaft. SOLUTION: A plurality of arms 3 with downward legs 5 expanded and contracted mutually independently are projected and installed radially at outer end sections, a rotary table 15 capable of being rotated around a vertical shaft is mounted at the central section of a plurality of the arms 3, and a guide cell 30 bearing a drill in a front-rear movable manner along the longitudinal direction is set up to the rotary table 15 in a manner that the guide cell 30 can be lifted and lowered and inclined. A hydraulic system driving the drill, the rotary table 15 and the legs 5 of the arms 3 is installed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shaft drilling apparatus suitable for excavating a shaft in rock or the like.

[0002]

2. Description of the Related Art When excavating a shaft in rock or the like, a pilot hole for crushing is drilled using a drilling device having a guide cell for supporting a rock drill on a crawler type traveling device. However, since the crawler-type drilling device requires space for the traveling device itself, for example, even if an attempt is made to drill a hole in the center of a narrow shaft, the drilling device itself becomes a hindrance, and it is possible to drill well at a desired position. could not.

[0003] In addition to the above, there has been developed a device for piercing while moving a guide cell by suspending it with a crane. In this case, it is necessary to firmly support the guide cell at a desired position and angle. It was difficult and inconvenient for practical use.

[0004]

Accordingly, an object of the present invention is to provide a drilling device which is convenient for excavating a deep shaft.

[0005]

Means for Solving the Problems In order to solve the above problems, the present invention has the following configuration. That is, the pit drilling device according to the present invention is provided with a plurality of arms having downwardly extending legs that extend and contract independently from each other at the outer end portions, and are provided so as to radially protrude. A rotatable rotary table is provided on the rotary table,
A guide cell that supports the rock drill so as to be able to move back and forth along the longitudinal direction is vertically movable, tiltably mounted, and a hydraulic device that drives the rock drill, the rotary table and the legs of the arm is provided. I have.

In this shaft drilling device, the rotary table at the center is supported by a plurality of telescopic legs provided at the distal ends of a plurality of arms extending radially, so that the guide cell can be stably held at an arbitrary angle. Can be supported. Further, by appropriately expanding and contracting the plurality of legs, the rotary table can be easily supported at a desired angle (usually horizontal) with respect to the ground. In this state, the guide cell is set up, held at an appropriate angle, and the rock drill is driven to perform drilling. Since the space between the radial arms is formed in the space between the arms, the space between the arms can be perforated. Therefore, it is possible to pierce substantially the entire ground on which the piercing device is installed, and it is possible to efficiently excavate the shaft.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention shown in the drawings will be specifically described below. The shaft drilling apparatus 1 is provided with four arms 3 extending radially from a base frame 2 provided at the center. Each of the arms is provided with an extendable downward leg 5 at the distal end thereof. Four arms 3, ...
Are provided radially, so these spaces
V-shaped space portion 4 that enters toward the center of base frame 2,.
Are formed. The number of arms is not limited to four in the illustrated example, but may be three or five or more. However, if the arm is used for a normal shaft, four arms are stable and horizontal adjustment is easy. preferable.

The leg 5 is of an outrigger type in which a grounding member 8 is attached to a lower end of a rod of a hydraulic cylinder 7. The illustrated hydraulic cylinder 7 is a telescopic cylinder that expands and contracts in two stages, and can obtain a large amount of expansion and contraction with a relatively short overall length as compared with a normal hydraulic cylinder. As shown in FIG. 10, the grounding member 8 is provided with three claws 8a,... On the bottom surface, and is attached to the cylinder 7 via a spherical joint 9 so that a predetermined It can be tilted freely within the range.

Between the upper end of the leg 5 and the mounting member 3a of the arm 3, there is provided a spring 10 for pushing the two apart. A limit switch 1 as a ground detection sensor is provided on the mounting member 3a at the tip of the arm 3.
A bar 12 is provided at the upper end of the leg 5 so as to face the limit switch 11.
When the grounding member 8 is not grounded, the two are
However, when the spring 10 is compressed by the ground member 8 being grounded, the bar 12 pushes the limit switch 11 to operate.

The central part of the radial arms 3 is the base frame 2, on which a rotary table 15 supported by roller bearings is provided. Rotary table 1
5 can be rotated forward and reverse by a drive gear on the side of the turning motor 17 and a ring gear meshing with the drive gear. A pair of upper and lower support frames 20, 21 extending in opposite directions are provided on the turntable 15, and a pair of slide frames 22, 23 is provided by these support frames.
Are movably supported. These slide frames are a pair of left and right frames 22 provided at intervals.
a, 22a and 23a, 23a are divided into horizontal frames 22b,.
b,... In addition, the support frame 20,
21, that is, at the center of the turntable 15,
A hydraulic motor 25 for sliding is provided, and a pinion provided on a rotating shaft thereof meshes with rack gears 22c and 23c provided on the respective sliding frames 22 and 23. Therefore, when the hydraulic motor 25 rotates forward and backward, the pair of slide frames 22 and 23 simultaneously slide in opposite directions. Reference numerals 27,... In the figure denote cam followers for guiding the movement of the slide frame.

A guide cell 30 is provided on one slide frame 22.
Is installed. The guide cell 30 includes the slide frame 22
The base of the support pipe 32 is pivotally attached to the slide frame 22 by a shaft 22d. In addition, the guide cell 30
The rod of the hydraulic cylinder 34 for elevating and lowering fitted in the support pipe 32 and the rod of the hydraulic cylinder 35 for tilting whose base is attached to the slide frame 22 are connected to the rear surface of the supporting pipe 32. Therefore, if the hydraulic cylinder 34 is expanded and contracted, the guide cell 30 moves in the axial direction of the hydraulic cylinder, and if the hydraulic cylinder 35 is expanded and contracted,
The guide cell 30 tilts back and forth.

A hydraulic device 40 is mounted on the slide frame 23 opposite to the above. The illustrated hydraulic device includes two large and small hydraulic pumps, which are distributed to the left and right sides of the slide frame 23. That is, a large-capacity hydraulic pump (15 KW) 41 and an oil tank 42 are installed on one of the slide frames 23 as the first hydraulic unit 40a.
A control panel 45 having a built-in program controller is provided on the end face of the unit, and a starting board 4 for the hydraulic pump is provided on the side face.
6 are attached respectively.

A small capacity hydraulic pump (3.7 KW)
47 and the manifold block 48 are connected to the second hydraulic unit 4.
0b, it is installed on the opposite side of the slide frame 23 with an interval D from the one hydraulic unit 40a. The manifold block 48 is a compact block in which various valves such as a solenoid valve and a flow dividing valve are incorporated in one block. A pipe (pipe or hose) for sending hydraulic pressure from the hydraulic pump side and a return pipe to the oil tank 42 are provided. Just connect
From here, the hydraulic pressure can be split and supplied to each hydraulic device. Since the manifold block 48 can be controlled electrically, various hydraulic devices provided in the drilling device 1 can be remotely controlled by various switches of the operation pendant 49. The second hydraulic unit 40b
An oil cooler 50 is installed on the front side, and is connected to each hydraulic unit by a pipe. The pressure oils of the two hydraulic pumps 41 and 47 are combined into one and supplied to the manifold block 48, from which they are supplied to each hydraulic device.

A hydraulic rock drill 55 is mounted on the guide cell 30. That is, the sprocket wheels 5 are provided at the front (lower) end and the rear (upper) end of the guide cell 30.
3, 54 are provided, and a chain 57 along the longitudinal direction of the guide cell 30 is hung on these. At the rear end of the guide cell 30, a feed hydraulic motor 60 is provided, and the chain is hung on a sprocket wheel attached to a rotation shaft of a speed reducer 60a integrated with the motor. 61, 61 are guide rollers for guiding this chain.

The front (lower) end of the guide cell 30 is provided with a foot pad 30a for pressing and fixing the guide cell against the ground, and the chain 5 is provided at an intermediate portion thereof.
A carriage 63 to which is fixedly provided is provided so as to be able to reciprocate along its longitudinal direction. The rock drill 55
Are fixedly mounted on the carriage 63. Therefore, when the hydraulic motor (feed motor) is rotated forward and backward, the rock drill 55 mounted on the carriage 63 moves back and forth along the guide cell 30. In the figure, 55a is a rock drill rotating device, 55b is its hitting device, 64 is a hose terminal, 65 is a hose reel unit, 66 is a hose hanger, 67 is a drilling rod, and 68 is a lock bit.

A pair of left and right wire attachments Ff, Ff are provided near the front end of the one slide frame 22, and one wire attachment is provided near the rear of the other slide frame 23 at the left and right center position. A tool Fr is provided. In the perforation apparatus 1, the upper portions of the wires W connected to these three wire attachments can be gathered at one place and suspended by hooks. In this suspended state, the guide cell 30 is supported in an upright state, and at this time, the machine body is held horizontally.

Next, a control system of the apparatus will be described. An ultrasonic distance sensor 70 for detecting the distance from the ground is attached to the lower surface of the center of the four legs of the drilling device 1. The control panel 45 is provided with a liquid-type tilt sensor 73 for detecting the tilt of the machine body, and a signal lamp unit 71 is mounted on the oil cooler 50. This signal lamp unit includes three lamps PL1, PL2, P of blue, yellow, and red.
L3 is provided. The hydraulic unit 40b
A flash lamp FL for warning is provided at the upper part of the.

First, when the machine is installed horizontally at a pit excavation site, the "automatic" / "manual" changeover switch of the control panel 45 is switched to "automatic". Then, the detection distance of the ultrasonic distance sensor 70 provided on the lower surface side of the central portion of the body is set to an appropriate distance, for example, 1.5 m. In this state, the machine is lifted by a crane and gradually lowered to a predetermined installation location. When the distance sensor 70 detects the set distance, the yellow signal lamp PL2 is turned on.

When the aircraft is slowly lowered from here,
Eventually, any one of the four legs 5,... Is grounded, and the red signal lamp PL1 is turned on. Then, the remaining three legs extend automatically until they touch the ground. When all the legs 5,... Are grounded, the blue signal lamp PL3 is turned on, so the crane wires are loosened. As a result, the aircraft is placed horizontally on the ground. When the inclination sensor 73 detects that the body is inclined by a predetermined angle (for example, 5 degrees) or more, the flash lamp FL is turned on. In this case, the body is lifted again by the crane, and the installation operation is repeated. All the operations of the horizontal installation are performed by program control.

Next, the guide cell 30 is moved to a desired position, and at the same time, the inclination angle is adjusted to perform the perforation.
When the guide cell 30 is moved forward, the hydraulic device 40 moves backward. Thus, even if the guide cell 30 moves, the hydraulic device 40 moves to the opposite side with the movement, so that a stable weight balance can be maintained. The guide cell 3
The inclination angle of 0 can be adjusted within a range of 100 degrees from the horizontal state with the front end part facing downward, and it is possible to take a foot angle (that is, a perforation inclination angle toward the center of the fuselage).

Further, since the guide cell 30, the hydraulic device 40 and the like are mounted on the rotary table 15, the rotary table is rotated by a hydraulic motor to reduce the guide cell to three.
It can be freely turned 60 degrees. In this case, the supply of the hydraulic pressure can be performed at an arbitrary angle using the center joint, so that there is no problem in driving the leg 5.

When the machine is installed horizontally, the wire of the crane is removed, and the hydraulic device is operated to perform drilling by the rock drill. In this case, since the guide cell 30 can be moved up and down and tilted, it is possible to well pierce a desired position.
During drilling, air is blown from the blow hole of the lock bit, but air and water may be used, or only water may be used. The blowing air or water and the electric power are supplied to the perforating device from outside by a hose. In addition,
The aircraft is at the set angle (for example, 5 degrees) during drilling for some reason
When tilted as described above, the flash lamp FL is turned on and an alarm is issued. Therefore, the operation is stopped, the control panel is switched to "manual", and the appropriate leg 5 is expanded and contracted to correct the horizontal state.

In the shaft drilling apparatus 1, since the guide cell 30 is mounted on the rotary table, the rotary table can be rotated by a predetermined angle, so that the concentric drilling can be performed by a simple operation. In addition, the guide cell 30
By moving the slide frame with attached back and forth,
It is possible to pierce to an arbitrary position. In this case, when the slide frame to which the guide cell 30 is attached is moved,
Since the slide frame on which the hydraulic device 40 is mounted is simultaneously moved in the opposite direction, the weight balance can be maintained and safety is achieved. Further, since the guide cell 30 can be inclined, it is possible to pierce at a desired angle. The hatched portion in FIG. 11 indicates a permissible range of the drilling device 1 installed horizontally. If the drill rod is drilled by tilting, the deep part of the hole will reach other parts.

During downward drilling, the guide cell 30 is used in an upright state. However, when drilling laterally, such as when a ground reinforcement bolt is buried in a wall surface, the guide cell is drilled with the guide cell tilted. In this case, the rear portion of the folded guide cell 30 fits into the space between the two hydraulic units 40a and 40b, so that the hydraulic device does not hinder the guide cell from falling. When the perforation apparatus 1 is stored in a warehouse with a low ceiling or transported by truck or the like, the guide cell 30 can be brought into a horizontal state in which the guide cell 30 is tilted into the space between the hydraulic units 40a and 40b. Convenient and stable.

After the drilling operation is completed, the shaft drilling device 1
When unloading, set the switch on the control panel to "automatic"
Lift the aircraft horizontally with a crane. When the outrigger-type legs 5,... Are all off the ground, they all automatically contract. Then, a signal for storing the legs is transmitted for the time set by the timer. After this set time, the signal stops.

[0026]

As is clear from the above description, when the shaft excavation device of the present invention is lifted by a crane or the like and installed at a desired excavation site, it is almost automatically installed horizontally. Therefore, handling is convenient. In addition, since the guide cell on which the rock drill is mounted can be swung in a horizontal plane, and can be moved up and down and tilted by a simple operation, it is possible to efficiently drill at a desired position at a desired angle. It is possible. Furthermore, since the hydraulic device is provided in itself, there is no need to supply hydraulic pressure from an external hydraulic device with a long hose or the like, and it is not necessary to unnecessarily increase the original hydraulic pressure, which is economical. is there.

[Brief description of the drawings]

FIG. 1 is a perspective view of a shaft drilling apparatus.

FIG. 2 is a front view of a state in which a guide cell is tilted.

FIG. 3 is a plan view thereof.

FIG. 4 is a side view thereof.

FIG. 5 is a side view in a suspended state.

FIG. 6 is a side view in a state where one leg is in contact with the ground.

FIG. 7 is a side view in a state where all the legs are in contact with the ground.

FIG. 8 is a side view of a state where the guide cell is advanced.

FIG. 9 is an explanatory diagram in the case of piercing the lower side of the airframe.

FIG. 10 is a partial sectional view of a leg.

FIG. 11 is a plan view showing a perforable area.

FIG. 12 is an explanatory view at the time of lifting.

FIG. 13 is an explanatory diagram of a body tilt state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pit drilling device 2 Base frame 3 Arm 5 Leg 15 Rotary table 22, 23 Slide frame 30 Guide cell 40 Hydraulic device

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kaichi Yataya 36, Tojo-cho, Higashi-gun, Hiroshima Prefecture Inside Yamamoto Rock Machine Co., Ltd. Inside Machine Co., Ltd. (72) Inventor Yukitaka Kawamoto 36, Tojo-cho, Higashi-gun, Hiroshima Prefecture Yamamoto Lock Machine Co., Ltd. Company Yoshito Morikawa 2396 Tsurutsu, Iwakuni-shi, Yamaguchi Prefecture Katsui Construction Co., Ltd.

Claims (1)

[Claims] 1. A plurality of arms having downwardly extending legs that extend and contract independently from each other at an outer end portion, and are provided so as to radially protrude,
In the center of these arms, a rotary table is provided that can rotate about the vertical axis, and a guide cell that supports the rock drill movably back and forth along the longitudinal direction can be moved up and down and tilted on the rotary table. A shaft shaft drilling device, comprising a hydraulic device for mounting and driving the rock drill, the rotary table and the legs of the arm.