JPH0434193A - Duplex tube type drill rod mounting and demounting device for core drill - Google Patents

Abstract

PURPOSE:To improve work efficiency by connecting inner and outer clamps for holding the inner and outer tubes of a drill rod, and a rod retaining mechanism having an aligning unit lock, respectively to a lifting mechanism. CONSTITUTION:An inner tube 1 is held by an inner clamp 3 on a rod rack 15, and an outer tube 2 is held by an outer clamp 4, thereby positioning both rods 1 and 2 at the drill center of a drifter 16 on the guide cell 6 of a core drill 5. After positioning the rods 1 and 2, a guide cell 6 is clamped with a unit lock 7. Then, a rod retaining mechanism 18 comes to have a degree of freedom with an arm 9, due to the operation of a floating mechanism 10. Thereafter, the positional error of the arm 9 is absorbed by the floating mechanism 10, and the centers of the rods 1 and 2 are aligned with the drifter 16, thereby performing a duplex tube changing work. According to the aforesaid construction, work efficiency can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a double-tube drill rod removal device for a drilling machine.

[Conventional technology]

Conventionally, there was no device for attaching and detaching double-pipe pipes, so all work was done by hand. When replenishing, the double tube is manually positioned from the rod rack onto the guide cell on the punching machine, and the rod and inner tube and outer tube and drifter are screwed together. Furthermore, during recovery, the rod and the screws between the inner and outer tubes and the drifter were removed, with the inner and outer tubes being supported by human hands, and then transported to the rod rack.

[Problem to be solved by the invention]

The above-mentioned conventional technology has the following problems.

(1) Because it was done by hand, it was very tiring.
It is also dangerous work.

(2) If the rod exchange device is installed on the side of the guide cell of the drilling machine, the number of rods that can be mounted is limited, and the problem of rod supply is not solved.

(3) When supplying and collecting rods between different vehicles,
Since the mutual positional relationship between the two is uncertain, positioning is difficult.

[Failure to solve the problem]

(1) The double pipe replacement work is carried out in a separate vehicle from the drilling machine.

(2) For this purpose, an inner clamp and an outer clamp that enable exchange of the double pipe, and a unit lock that positions both on the guide cell are provided.

(3) Install a lot 9 stopper to prevent the rod from falling during lot transportation.

(4) To absorb positional errors during lot positioning,
A floating mechanism with six freedoms is provided.

(5) A transmitter and a receiver are provided so that the operator on the drilling machine side can also operate the lot changing device.

[Effect]

Double pipe type 9 with inner clamp and outer clamp
The inner and outer tubes of the rill rod 9 are grasped and conveyed onto the guide cell of the drilling machine.

Center the drill rod with respect to the drilling machine using the unit lock. Since a floating mechanism having six degrees of freedom is provided between the unit lock, inner/outer clamp, and the conveying mechanism, centering of the drill rod and the drilling machine can be easily and reliably performed.

〔Example〕

1 to 11, 1 is an inner tube of a double tube, 2 is an outer tube of a double tube, 3 is an inner clamp, 4 is an outer clamp, 5 is a perforator, 6 is a guide cell, and 7 is a unit. Lock, 8 is lot 9 stop, 9 is arm, 10 is floating mechanism, 10-1, 10-2 are springs, 10-3.1
0-4 is a ball bearing, 11 is a solenoid valve, 11-1 is a center bino (Subarup), 12 is a switch box,
13 is the receiver, 14 is the transmitter, 15 is lot 9 rack,
16 is a drifter, 17 is a lot 3, 18 is a rod gripping mechanism, 19 is a check pulp, and (9) is a drill rod outer clamp 4 and an inner clamp 3 are a center bypass pulp 11 of a solenoid valve 11. -1 and each solenoid ° are simultaneously excited to open and close. In addition, if the excitation of both solenoids is stopped in the closed state, the hydraulic pressure in the relief pulp application side will drop to the tank pressure, so the clamp pressure of the inner clamp 3 and outer clamp 2 will be below the relief pulp application set pressure, and lot 9 It becomes the state where it guides.

Unit lock 7 and lot 9 stop horn 8 are solenoid valve 11
The center bypass pulp 11-1 and each solenoid 9 are simultaneously excited to open and close. Since the unit lock 7 and the lot 9 stopper groove 8 are provided with a check pulp 19, the clamping force is maintained even if the excitation is stopped.

By inserting the unit lock 7 into the guide cell 6, the inner clamp 3 and the outer clamp 4 are positioned relative to the center of the lifter drilling.

FIG. 3 shows the operating state of the unit lock 7.

The inner clamp 3 clamps and guides the inner tube 1,
The outer clamp 4 clamps and guides the outer tube 2. FIG. 4 shows the operating state of the clamp 3.4.

The floating mechanism 10 provides six degrees of freedom for the rod gripping mechanism 18 relative to the arm 9. Usually, the floating mechanism 10 is 10-1, 1
It is stable at a balanced position of 0-2, and when an external force greater than the spring set pressure is applied, the positional relationship between the two changes.

Ball earrings IO-3 and 10-4 are provided at the connection portion between the arm 9 and the lot 9 gripping mechanism 18 to absorb displacement in the horizontal direction and rotational direction. Figure 5(a).

(b) and (C) show the state of the floating rock structure 10 when it is neutral, when absorbing deviations in the Z direction, and when absorbing deviations in the X and y directions.

The solenoid valve 11 that moves the inner clamp 3, outer clamp 4, unit lock 7, and rod stopper 8 is operated by a switch box 12 provided in the drill rod 9 attachment/detachment device I and a transmitter 14 held by the operator of the drilling machine 5. I can do it.

Next, the work of adding the double pipe rod will be explained.

1) Grip the inner tube 1 with the inner clamp 3 on the lot 9 rack 15, and grip the outer tube 2 with the outer clamp 4.
and lifter 1 on the guide 9 cell 6 of the drilling machine 5.
Position the rod 1.2 over the center of the hole 6. At this time, if there is a risk of the rod falling during transportation, prevent the rod from falling by lowering the white rod 8.

2) After positioning, when the guide cell 6 is clamped with the unit lock 7, the rod gripping mechanism 18 has 6 degrees of freedom with respect to the arm 9 due to the floating mechanism]0, so it absorbs the position error of the arm 9. Thus, the centers of the holes 1 and 2 are precisely positioned at the center of the hole of the drifter 16.

3) The above operations are performed by the oiler on the drill rod attaching/detaching device (9), but since the subsequent operations are related to the operation of the drifter 16 of the drilling machine 5, as shown in FIG. Not only the operator on the attachment/detachment device (9) side, but also the rotor on the drilling machine 5 side can be operated.

When the rod gripping mechanism 18 is positioned at the center of the drilling of the shaft 16, the drilling machine 5111 is moved to the drifter 1.
6 is advanced, and the screw of the inner tube 1 on the drifter side is screwed into the threaded portion of the front end of the drifter 16.

4) Open the inner clamp 3, move the drifter 16 further forward, and screw the screw on the drifter side of the outer tube 2.

5) Open the outer clamp 4, open the unit lock 7, further advance the door 7 slider 16, and close the inner tube 1 and outer tube 2.
The screw on the opposite side of the drifter is screwed onto the rod 17.

6) Retract the rod gripping mechanism 18 and start drilling.

Lot 9 is added by repeating the above steps.

Next, recovery of the double pipe rod can be realized by performing the above replenishment process in reverse.

〔Effect of the invention〕

The double-tube drill rod attaching/detaching device for a drilling machine according to the present invention includes an inner clamp and an outer clamp for gripping the double-tube drill rod;
A nine-rod gripping mechanism comprising a unit lock that engages with a guide cell of a drilling machine to center the double-tube drill rod, and a floating mechanism that absorbs positional and directional deviations to hold the drill rod. By connecting it to a mechanism that lifts and moves it, it is possible to mechanize the work of replacing double pipes, which was previously done manually. Therefore, work stability and efficiency can be improved.

[Brief explanation of drawings]

FIG. 1 is a side view of the entire device according to the embodiment of the present invention, and FIG.
The figure is a side view of the same rod gripping mechanism as above, Figure 3 is a detailed view of the unit lock in Figure 1, Figure 4 is a detailed view of the inner clamp and outer clamp in Figure 1, and Figure 5 (a).
, (b), (c) are detailed views of the floating mechanism in Figure 1, and Figure 6.
The figure is a detailed view of the rod stopper, Figure 7 is an external view of the transmitter, Figures 8 and 9 are perspective views showing the working status of the drill rod attaching/detaching device and the drilling machine, and Figure 10 is a block of the transmitter/receiver. The diagram, FIG. 11, is a hydraulic circuit diagram. 1...Inner tube 2...Outer tube 3...Inner clamp 4...Outer clamp 6...
・Guide cell 7...Unit lock 10
...Floating mechanism 18...Lot gripping mechanism #13 Figure 4

Claims (1)

[Claims] The invention includes an inner clamp and an outer clamp for gripping the inner and outer pipes of a double-tube drill rod, and a unit lock that engages with a guide cell of a drilling machine to center the double-tube drill rod. A double-tube drill rod attaching/detaching device for a drilling machine, characterized in that a rod gripping mechanism is connected to a mechanism for lifting and moving the drill rod via a floating mechanism that absorbs deviations in position and direction.