JPS6251359B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a splicing rod removal device for a drilling machine.

When drilling a deep hole in a drilling device, that is, a device that drills a hole in rock, etc. while applying impact and rotation to the drilling rod with a drifter, multiple rods are attached to the drilling rod via a joint sleeve. The overall length of the rod is increased by connecting the joint rods.

Conventionally, when removing the above-mentioned joint rods in order from the rear, (1) with the tip of the drilling rod in contact with the end of the deep hole, a blow is applied from behind with a drifter to screw all the joint sleeves together; (2) Connect all rods and move back by one rod. (3) Check the rearmost joint rod protruding from the deep hole. (4) Rotate the drifter forward and connect the drifter and the rearmost joint. (5) Check the joint sleeve at the front end of the rearmost connecting rod to make the drifter rotate in the opposite direction (1)
Generally, a method is used in which the joint rod located at the rear is separated from the joint sleeve at the front end with the joint sleeve attached to the rear end through step (5). However, due to inexperience with such work, the above procedure may be incorrectly performed, or the work at each stage may not be completed completely, resulting in the rod separating from a different location from the intended location.

On the other hand, as disclosed in Japanese Patent Publication No. 55-47196, a pair of friction rollers are rotatably fitted onto the circumferential surface of the joint rod from above the rod, and the joint sleeve at the front end of the joint rod is chucked. There is a known device in which the rotation of the joint rod is transmitted to the joint rod via a friction roller, thereby rotating the joint rod in the opposite direction and separating the joint rod. Slips are likely to occur between the joint rod and the joint rod, and the joint rod may not be separated smoothly.

In view of this, the present invention provides a movable member movable with respect to the rod axis position, which includes a rotating shaft having a male thread and a pressing piston for retracting the axial center of the rotating shaft. The joint sleeve is screwed onto the joint sleeve at the rear end of the joint rod, and the pressure piston presses the rear end surface of the rod to increase the bonding force between the rotating shaft, joint sleeve, and joint rod. To provide a splicing rod removal device for a drilling device that can reliably perform separation.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below based on embodiments with reference to the drawings.

In the drilling device 1 shown in a plan view in FIG. 1 and in a side view in FIG. On the other hand, near the retreated position of the drifter 3 in the guide cell 2, a movable member 5, which will be described later, is provided so as to be rotatable from the side with respect to the joint rod axis position.

The drifter 3 includes a shank rod 6 projecting forward, and inside the drifter there are provided a rotating means for rotating the shank rod 6 and a striking means for reciprocating the shank rod 6 back and forth.
The drilling rod and connecting rod for attaching the bit to the tip are connected to the shank rod 6 (see Fig. 8).
(see FIG. 9) and is rotated and struck by the rotating means and striking means to form a hole.

The clamping means 4 comprises a pair of rotatable clamping arms 7, 7, each clamping arm 7, 7 being connected to a piston rod 9, 9 of a cylinder arrangement 8, 8, whereby actuation of said cylinder arrangement 8, 8 causes The clamp arms 7, 7 are rotated to clamp the joint sleeve or to guide the drilling rod. This drilling rod guide is used for centering when counterboring in a drilling hole, and the clamping means 4
functions as a centralizer.

A first storage body 12 and a second storage body 13 that house a bracket 10 and a joint rod 11 are fixed to the side surface of the guide cell 2 in this order from the front end thereof,
An upper rod 14 and a lower rod 15 are supported in parallel to the guide cell 2 by this bracket 10 and each of the storage bodies 12 and 13. The upper rod 14 has a shaft 16 fixed at its front end to the bracket 10, and a rotary cylinder 17 is moved back and forth using the shaft 16 as a piston rod by a cylinder (not shown) provided therein in the longitudinal direction. A rod clamping means 1 for clamping the joint rod 11 is attached to the front end of the rotary cylinder 17.
8, a sleeve clamping means 19 for clamping the joint sleeve is provided at the rear end of the rotary cylinder 17;
Further, the movable members are attached to the rear end portions of the mandrel 16, respectively.

As shown in FIG. 3, the first storage body 12 includes a circular storage section 21 with an opening at the upper end, and a rotary plate 22 fixed to the lower rod 15 is fitted into the storage section 21. ing. A plurality of notch grooves 23 are formed around the rotating plate 22, and the lower rod 15
By intermittently rotating the rotary plate 22 in one direction via the lower rod 15 by the indexing rotation means 24 connected to the rear end, the notch groove 23 is successively exposed to the opening of the storage portion 21. It is adapted to receive the connecting rod 11 and to hold the connecting rod 11 between the notched groove 23 and the circumferential surface of the storage portion 21.

Further, the first storage body 12 and the rotary cylinder 17 are connected by a swing cylinder device 25. That is, the cylinder 25a of the swing cylinder device 25 is attached to the piston rod 25b in the first storage body 12.
is connected to the rotary cylinder 17, and the rotary cylinder 17 is rotated by the movement of the piston rod 25b, thereby rotating the movable member 5, the rod clamp means 18, and the sleeve clamp means 19. The structure of the second storage body 13 is similar to that of the first storage body 12 except that the swing cylinder device 25 is not provided.

As shown in FIG. 4, the rod clamping means 18 clamps the fixing member 27 with a bolt by placing a rotary cylinder 17 between a semicircular notch 26 provided on the side of the center and a notch 28 of the fixing member 27. It is fixed to this rotary cylinder 17 by tightening it to the means body. The rod clamp means 18 has a claw mounting portion 29 attached to its lower end portion by means of cylinder means so as to be movable downwardly. It is movably attached, and both claw pieces 30, 3
0 is rotated to grip the connecting rod 11. Further, the rod clamp means 18 is
Rotating cylinder 1 by the swing cylinder device 25
7, the claw mounting portions 29 of both claw pieces 30, 30 adjust the axial center position of the joint rod attached to the drifter 3 and the joint rod receiving portions of the respective openings of the first storage body 12 and the second storage body 13. It is set up so that it can be moved back and forth between locations. The sleeve clamping means 19 is of similar construction to the rod clamping means 18.

The movable member 5 includes a mounting portion 31 attached to the rear end of the mandrel 16 and a movable portion 33 having a rotating shaft 32. That is, as shown in FIG. 5, in the mounting part 31, the rear end of the mandrel 16 is fitted between a notch 34 formed in the main body of the mounting part and a notch 36 formed in the mounting bracket 35, and the mounting bracket 35 is bolted. By fixing it to the mounting body with
It is rotatably attached to the Then, this mounting portion 31 is connected to a second driving means 41 which will be described later.
The movable member 5 is connected to the sleeve clamp means 19 at the swing cylinder device 25.
When the sleeve clamp means 19 is actuated, it rotates together with the sleeve clamp means 19. On the other hand, the movable part 33
is connected to the mounting portion 31 by a cylinder device 37 for advancing and retracting, and the cylinder device 37 for advancing and retreating and the cylinder device 25 for swinging rotate the rotating shaft 32.
A first driving means 38 is configured to move the rod relative to the rod axis position during drilling. That is, in the advancing/retracting cylinder device 37, the cylinder 37a is attached to the mounting portion 31, and the piston rod 37b is attached to the movable portion 3.
3, and the rotating shaft 32 is rotated near the rod axis position by the operation of the swing cylinder device 25.
The rod axis position is reached by the operation of the rod.

Further, the second driving means 41 includes a cylinder 41
A is connected to the sleeve clamp means 19, and a piston rod 41b is connected to the mounting portion 31 of the movable member 5, so that the movable member 5, that is, the rotating shaft 32, is moved back and forth by moving the piston rod 41b back and forth.

The structure of the rotating shaft 32 of the movable member 5 and its surroundings is shown in FIG.

That is, the rotating shaft 32 is connected to the body 4 of the movable part 33.
The joint sleeve is rotatably supported by the body 44, and a male threaded portion 45 that can be screwed into the female threaded portion of the joint sleeve is formed at the front end, and the male threaded portion 45 projects forward from the body 44. Further, a third driving means 46 for rotating the rotating shaft 32 in forward and reverse directions is linked to the rear end of the rotating shaft 32. This third driving means 46
, 47 is a motor for forward and reverse rotation, and the motor 47 is connected to the rear end of the rotating shaft 32 via gears 48 and 49.

Further, the rotating shaft 32 is cylindrical, and the pressing piston 50 uses the rotating shaft 32 as a cylinder body.
is inserted concentrically with the rotating shaft 32. That is, this pressing piston 50 has a large diameter piston part 51 connected to a small diameter rod part 52,
The cylindrical hole of the rotating shaft 32 is connected to the piston portion 5 provided in the center.
1, a rod insertion hole 54 provided at the front portion through which the rod portion 52 passes, and an oil inlet/outlet hole 55 provided at the rear portion. The pressing piston 50 is configured such that the rod portion 52 protrudes from the front end of the male threaded portion 45 when hydraulic pressure is applied from the oil inlet/outlet hole 55.

Next, to explain the operation of the above embodiment, when drilling a hole, the drilling rod is connected to the shank rod 6 of the drifter 3 via a joint sleeve, and the drifter 3 is guided by the guide cell 2 and moved forward. A hole is drilled by a drifter 3 while applying rotation and impact to the drilling rod. Therefore, when drilling deep holes, the connecting rod 1 to the drilling rod is
1 is added and the joint rod 11 is recovered. In this case, the joint rod 11 is attached to the rod clamp means 1 with the joint sleeve attached to the rear end.
8 and sleeve clamp means 19, and moves between the storage position supported by each storage body 12, 13 and the rod axis position during drilling.

The movement of the connecting rod 11 is shown in FIG. 7 in relation to the rod clamp 18 and the first storage body 12. That is, the joint rod 11 is operated by the swing cylinder device 25 to provide a rod clamping means 18 and a sleeve clamping means 19.
The above movement is performed by the rotation of . Each clamping means 1
When gripping or detaching the joint rod 11 and the joint sleeve with 8 and 19, the claw pieces 3
0 and 30 rotations and the claw mounting portion 29 moves forward and backward.

The procedure for recovering the splicing rod after drilling a deep hole is as described in Section 8.
This is shown in FIGS. 13-13.

That is, as shown in FIG.
6, connect the first joint rod 57a and the second joint rod 57b to the first joint sleeve 58a, respectively.
and the second joint sleeve 58b, the rear end of the second joint rod 57b is connected to the drifter 3 through the third joint sleeve 58c, and after drilling a hole, when the joint rods 57a and 57b are recovered. First, a blow is applied from behind by the drifter 3 while the tip of the drilling rod 56 is in contact with the bottom of the hole. This loosens the screw connections of the respective joint sleeves 58a, 58b, and 58c. Then, as shown in FIG. 9, the drifter 3 is moved back until the second connecting rod 57b comes out of the hole, that is, by the length of one connecting rod.

Thereafter, by operating the swing cylinder device 25, the rod clamping means 18, sleeve clamping means 19, and movable member 5 are rotated to face the rod axis position at the time of drilling, as shown by arrow A in FIG. The third joint sleeve 58c is clamped by the sleeve clamping means 19. Then, the drifter 3 is moved to the third position by reverse rotation of the shank rod 6.
It is separated from the joint sleeve 58c and retreated.

Subsequently, the cylinder device 37 for advancing and retracting the movable member 5
is activated to move the rotary shaft 32 to the rod axis center position. Then, with the second joint rod 57b held by the rod clamp means 18 as shown by the arrow a in FIG. While moving the movable member 5 forward, the rotating shaft 32 is rotated forward by the operation of the third drive means 46, and the male threaded portion 45 is inserted into the female threaded portion 59 of the third joint sleeve 58c, as shown in FIGS. 10 and 11. to be screwed together.

Thereafter, as shown in FIG. 11, the third joint sleeve 58c is held in the hold state (arrow a), and the second joint sleeve 58b is clamped by the clamping means 4 at the front end of the guide cell (arrow A).
Then, the pressing piston 50 is moved forward and pressed against the rear end surface of the second joint rod 57b. This pressing increases the coupling force between the second joint rod 57c, the third joint sleeve 58c, and the rotating shaft 32. In this state, when the movable member 5 is moved backward while rotating the rotary shaft 32 in the opposite direction, the second joint rod 57b is connected to the rotary shaft 32 via the third joint sleeve 58c, as shown in FIG. It rotates in the opposite direction and separates from the second joint sleeve 58b.

Then, the pressing piston 50 is moved backward, and the first
By placing the third joint sleeve 58c in a clamped state as shown by arrow A in FIG. 2, and moving the movable member 5 to the rear end while rotating the rotary shaft 32 in the opposite direction, the third joint sleeve 58c is clamped as shown in FIG. 13. The movable member 5 is separated from the housing body 12, 13 by holding the second joint rod 57b with the third joint sleeve 58c attached by the rod clamping means 18 and the sleeve clamping means 19.
Store it in. The recovery of the first joint rod 57a is also carried out in the second
The procedure is the same as for the splicing rod 57b.

When adding a joint rod, after drilling a hole with the drilling rod 56, the screw connection of the first joint sleeve 58a is loosened by the impact of the drifter 3, and the first joint sleeve 58a is attached to the clamping means 4. Clamp and separate the drifter 3. Then, the first joint rod 57a is supplied to the rod axis position and moved forward to hit the first joint sleeve 58a, and by rotating forward while moving the drifter 3 forward, the rear end of the first joint rod 57a is moved forward. Second joint sleeve 58b
When screwed together and continue rotating in the normal direction, the first
The joint rod 57a is the first joint sleeve 58
is coupled to a. By repeating the above steps, the second connecting rod 57b and then the third connecting rod are successively connected.

As described above, according to the present invention, the movable member is provided with a rotary shaft having a male thread and a pressing piston that moves forward and backward in the shaft center, and the rotary shaft is screwed into the joint sleeve at the rear end of the connecting rod. Since the pressure piston presses the rear end surface of the joint rod, the coupling force between this joint rod, joint sleeve, and rotating shaft can be increased compared to other joint rod joints, and the joint can be made by rotating the rotating shaft in the opposite direction. This provides an excellent effect in that the rods can be separated reliably.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the present invention; FIG. 1 is a plan view of the drilling device, FIG. 2 is a side view thereof, FIG. 3 is a rear view of the first storage body, and FIG. 4 is a rear view of the rod clamping means. 5 is a rear view of the movable member, FIG. 6 is a side view partially showing the movable member in section, FIG. 7 is a rear view showing the relationship between the rod clamp means and the first storage body, and FIG. 8 is a rear view of the movable member. 9 is a side view showing the step in which the screw connection is loosened by the impact of the drifter, FIG. 9 is a side view showing the step in which the drifter has been retreated by one connecting rod, and FIG. 10 is a side view showing the step in which the drifter and the movable member have been replaced. FIG. 11 is an enlarged side view showing a partial cross section when the pressing piston is activated, FIG. 12 is a side view showing the joint rod separated, and FIG. 13 is a side view showing the movable member separated. FIG. DESCRIPTION OF SYMBOLS 1...Drilling device, 2...Guide cell, 3...Drifter, 4...Clamp means, 5...Movable member, 11...Joint rod, 18...Rod clamp means, 19...Sleeve clamp means, 25...Swing cylinder device, 32... Rotating shaft, 37... cylinder device for advancing and retracting, 38... first drive means, 41... second drive means,
45...Male thread part, 46...Third driving means, 50...Press piston, 56...Drilling rod, 57a...First
Joint rod, 57b...Second joint rod, 58a...
1st joint sleeve, 58b...2nd joint sleeve, 58c...3rd joint sleeve,
59...Female thread part.

Claims (1)

[Claims] 1 The joint rod used for deep hole drilling is separated from the joint sleeve at the front end while the joint sleeve is connected to the rear end, and the joint at the front end of the joint rod is connected to the front part of the guide cell that guides the drifter. A clamp means for clamping the rod sleeve is provided, and a movable member movable with respect to the axial center position of the rod during drilling is provided near the drifter retracted position of the guide cell, and the movable member has a joint. A rotating shaft is provided with a male threaded portion at its front end that can be screwed into the female threaded portion of the sleeve, and the rotating shaft is provided with a pressing piston that can protrude from the front end of the male threaded portion using the rotating shaft as a cylinder body. The movable member is inserted concentrically, and the movable member has a first drive means for moving the movable member, the rotary shaft has a second drive means for moving the rotary shaft back and forth, and a third drive for rotating the rotary shaft forward and backward. means are respectively linked to clamp the joint sleeve at the front end of the joint rod, while screwing a rotating shaft to the joint sleeve at the rear end of the joint rod, and advance the pressing piston to clamp the joint sleeve at the rear end of the joint rod. A connecting rod for a drilling device characterized in that the connecting force between the connecting rod, the joint sleeve at the rear end and the rotating shaft is increased by pressing, and the connecting rod is separated from the joint sleeve at the front end by rotating the rotating shaft in the opposite direction. Removal device.