JP3614507B2 - Rotator device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a rotator device used for rotating a rod-like body in a rod changer or the like for adding and recovering a rod of a drilling machine when drilling a rock.
[0002]
[Prior art]
In a drilling machine such as a drill jumbo or fan cut drill, a shank rod is inserted into a drilling machine mounted on a guide shell, and a rod of a predetermined length is connected to this shank rod via a sleeve. A bit is installed, and the drill and rotation are transmitted from the rock drill to the bit, and the drill is fed to drill the rock. When the drilling length is longer than the rod length, the rod is added and recovered during the drilling operation.
[0003]
The work of adding and recovering the rod has been performed manually, but has recently been mechanized and performed by a rod changer. This rod changer is equipped with a rotator device for rotating and connecting a screw to and disconnecting a screw.
As a rotator device, a three-roller type as shown in FIG. 10 has been conventionally used. In this rotator device, the left and right rollers 94L and 94R provided on the left and right rotator arms 93L and 93R that are opened and closed by the cylinder 91 and the spring 92, and the central roller 94C sandwich the rod 95 to give rotation. ing.
[0004]
Here, the shaft 96C of the central roller 94C is a drive shaft, and the shafts 96L and 96R of the left and right rollers 94L and 94R are driven shafts.
As shown in FIG. 11, when a counterclockwise rotation is given to the rod 95, the central roller 94C and the left and right rollers 94L and 94R must rotate clockwise. Therefore, an intermediate gear 97L that rotates in the counterclockwise direction and transmits the rotation between the shaft 96C of the central roller 94C as the drive shaft and the shafts 96L and 96R of the left and right rollers 94L and 94R as the driven shaft. 97R are provided.
[0005]
[Problems to be solved by the invention]
However, since this rotator device sandwiches the rod 95 between the central roller 94C and the left and right rollers 94L and 94R, the rotator device must be securely aligned with the center of the rod 95, and trouble due to insufficient adjustment. Since there are only three points of contact between the rod 95, the central roller 94C and the left and right rollers 94L and 94R, the transmission efficiency of the rotational force is poor. In addition, the number of parts used, such as a gear for rotation transmission, increases, and the structure becomes complicated and expensive.
[0006]
The present invention solves such a problem in the rotator device, and can reliably hold the rod even if there is a slight misalignment, has a large contact area with the rod, and has high rotational force transmission efficiency. Another object of the present invention is to provide an inexpensive rotator device having a simple structure and a small number of parts.
[0007]
[Means for Solving the Problems]
In the present invention, in the rotator device for rotating the rod-shaped body, the head pulley is provided on the head shaft supported by the rotator frame, the tail pulley is provided on the tail shaft supported by the left and right rotator arms that can be opened and closed, and the head pulley and the tail pulley are provided. The above-mentioned problem of the rotator device is solved by tensioning a belt that sandwiches the rod-shaped body between the belt and the belt.
[0008]
[Action]
When rotating the rod-shaped body, the left and right rotator arms are opened, the rod-shaped body is inserted between the left and right transmission belts, the rotator arm is then closed, and the rod-shaped body is sandwiched between the left and right belts. Then, when the pulley is rotated to run the belt, the rod-like body is rotated by the belt.
[0009]
In this rotator apparatus, since the rod-shaped body is clamped using a flexible belt, there is no problem even if there is a slight misalignment, and therefore the initial positioning becomes very easy.
Further, since the contact between the rod-like body and the belt is a surface contact, the transmission efficiency of the rotational force is high and the rotation is reliably transmitted.
[0010]
【Example】
1 is a side view of a drilling machine equipped with a rod changer equipped with a rotator device according to an embodiment of the present invention, FIG. 2 is a front view of the rod changer, FIG. 3 is a plan view of the rod changer, and FIG. 3 is an end view taken along line AA in FIG. 3, FIG. 5 is an explanatory view of an opening / closing mechanism of the rotator arm, and FIGS. 6 to 9 are explanatory views of the operation of the belt.
[0011]
Here, the drilling machine 1 is a fan cut drill that drills in the peripheral wall of a mine shaft, and a tilt boom 12 is pivotally supported at the tip of a carriage 11 and can be tilted up and down by a tilt cylinder 13. The base end portion of the swing boom 14 is pivotally attached to the tip end portion of the tilt boom 12 so as to have an L shape when viewed from the side, and the swing cylinder 15 can swing left and right. A swing mechanism 16 that rotates 360 ° is provided at the tip of the swing boom 14, and a guide shell 18 is provided on the swing mechanism 16 via a guide mounting 17 on a plane that is substantially perpendicular to the tilt boom 12. It is supported to turn 360 °. A rock drill 19 is mounted on the guide shell 18 and moves along the guide shell 18 by a known feed mechanism (not shown).
[0012]
A rod changer 2 including a magazine 4, a rod carrier 5 and a rotator device 7 is provided on the side surface of the guide shell 18.
The magazine 4 is obtained by fixing a disk-shaped front magazine 41 and a rear magazine 42 each having a plurality of storage ports 47 for storing the rod 3 at the peripheral edge thereof to a cylindrical magazine shaft 43 at a predetermined interval. The magazine shaft 43 is rotatably mounted on a carrier boom shaft 51 supported by a magazine frame 44 fixed to the side surface of the guide shell 18. A sprocket 45 is provided at the upper end of the magazine shaft 43, and rotation is given from a magazine motor (not shown) through a chain (not shown).
[0013]
The rod carrier 5 includes a carrier boom 52, a carrier arm 53, and a clamp hook 54. The base end portion of the carrier boom 52 is fixed to both ends of the carrier boom shaft 51, and the carrier boom 52 is rotated by a carrier boom cylinder 55 attached to the magazine frame 44. Yes.
[0014]
A carrier arm shaft 56 is supported at the tip of the carrier boom 52, and a link 57 is fixed to the carrier arm shaft 56. A carrier arm cylinder 58 is attached between the link 57 and the magazine frame 44, and the carrier arm shaft 56 is rotated by the carrier arm cylinder 58. A base end portion of the carrier arm 53 is fixed to the carrier arm shaft 56 with a power lock 59.
[0015]
A clamp hook 54 is pivotally attached to the tip of the carrier arm 53, and this clamp hook 54 is rotated by a clamp cylinder 60 attached between the carrier arm 53 and grips the rod 3. ing.
A rotator 7 is fixed to the center of the carrier arm shaft 56 with a power lock 79. In the rotator 7, a head shaft 71 is rotatably supported by a rotator frame 70, and base ends of left and right rotator arms 72L and 72R are rotatably attached to the head shaft 71. Tail shafts 73L and 73R are rotatably supported at the distal ends of the arms 72L and 72R.
[0016]
The head shaft 71 is provided with a head pulley 74, the tail shafts 73L and 73R are provided with tail pulleys 75L and 75R, and belts 76L and 76R are stretched between the head pulley 74 and the tail pulleys 75L and 75R. It is installed.
A sprocket 77 is fixed to one end of the head shaft 71, and rotation is given to the head shaft 71 from the rotator motor 78 via the chain 80 and the sprocket 77, and the head pulley 74 causes the belts 76L and 76R to rotate. Let it run.
[0017]
The base end portion of the right rotator arm 72R extends to the left from the head shaft 71. A rotator arm cylinder 81 in which a spring 82 is inserted is attached between the extended end portion and the intermediate portion of the left rotator arm 72R, and the tip ends of the rotator arms 72L and 72R are always closed by the spring 82. The tip of the rotator arms 72L and 72R is opened by shortening the rotator arm cylinder 81. Further, the rotator frame 70 is provided with a stopper 84 that regulates the range of swinging and opening / closing of the rotator arms 72L and 72R.
[0018]
In the drilling operation, the bogie 11 of the drilling machine 1 is installed near the drilling position, the tilt cylinder 13 is extended, and the tilt boom 12 is tilted downward from the retracted position during travel. State. Next, after the left and right swing cylinders 15 are expanded and contracted, the swing boom 14 is swung left and right to move the turning mechanism 16, the guide mounting 17 is turned by the turning mechanism 16, and the guide shell 18 is positioned at the hole position. To do. Then, the rock drill 19 is driven and drilled. When the drill hole for one rod is finished, the rod is added.
[0019]
Follow the steps below to add the rod.
The drilling machine 19 is blanked, the screw at the connecting portion between the shank rod of the drilling machine 19 and the sleeve at the rear end of the rod 3 is loosened, the sleeve is clamped with a centralizer (not shown), and the drilling machine 19 is The screw at the connecting portion between the shank rod of the rock drill 19 and the sleeve of the rod 3 is disconnected and the drill rocker 19 is retracted to the rear end (upper end in FIG. 1) of the guide shell 18.
[0020]
The rod 3 is stored in the storage port 47 of the magazine 4, and the clamp hook 54 of the rod carrier 5 clamps the rod 3. Therefore, the carrier arm cylinder 58 is shortened, the carrier arm 53 is slightly rotated, and the rod 3 is taken out from the magazine 4.
The carrier boom cylinder 55 is shortened and the carrier boom 52 is turned to the guide shell 18 side. At this time, if the carrier arm cylinder 58 is not expanded and contracted, the rod 3 moves linearly toward the guide shell 18 by the action of the link 57.
[0021]
Therefore, the carrier arm cylinder 58 is extended to slightly rotate the carrier arm 53, and after positioning is performed so that the center of the rod 3 coincides with the drill axis X, the clamp cylinder 60 is slightly shortened and the clamp hook 54 is loosened. The rod 3 is held so as to be rotatable.
At this time, since the rotator device 7 is also fixed to the carrier arm shaft 56, the rotator device 7 moves to the rod 3 side as the rod carrier 5 moves. Therefore, the rotator arm cylinder 81 is shortened, and the distal ends of the rotator arms 72L and 72R are opened as shown in FIG. 6 so that the rod 3 can freely rotate between the left and right belts 76L and 76R.
[0022]
The rock drill 19 is moved forward while rotating to connect the shank rod and the screw of the sleeve at the rear end of the rod 3, and the screw at the front end of the rod 3 is connected to the screw of the sleeve at the rear end of the rod 3.
The magazine 4 is rotated by the magazine motor, and the next rod 3 for addition is moved to the take-out position.
[0023]
The clamp cylinder 60 is shortened to open the clamp hook 54, the carrier arm cylinder 58 is shortened and the carrier arm 53 is slightly rotated to release the clamp hook 54 from the rod 3, and then the carrier boom cylinder 55 is extended. Then, the carrier boom 52 is turned to the magazine 4 side. At this time, if the carrier arm cylinder 58 is not expanded and contracted, the clamp hook 54 moves linearly to the magazine 4 side by the action of the link 57.
[0024]
The extension is completed by extending the carrier arm cylinder 58 and rotating the carrier arm 53 and extending the clamp cylinder 60 to clamp the rod 3 with the clamp hook 54.
At this time, the rotator device 7 also returns to the magazine 4 side with the movement of the rod carrier 5, and the rod 3 enters between the left and right belts 76L and 76R.
[0025]
When the rod carrier 5 returns to the original position in this way, the drilling is resumed, and this cycle is repeated until the predetermined drilling length is reached. However, in the final cycle, it is not necessary to clamp the next rod 3 with the clamp hook 54, and the clamp hook 54 is left open. When the predetermined drilling length is reached, the rod 3 is recovered.
The rod is collected in the following procedure.
[0026]
After drilling sufficiently with the rock drill 19 and loosening the screws at the connecting portions of all the rods 3, the rock drill 19 is moved backward by one distance of the rod 3, and the front end of the rod 3 is Clamp the sleeve with the centralizer.
The carrier arm cylinder 58 is shortened to rotate the carrier arm 53, the carrier boom cylinder 55 is shortened, and the carrier boom 52 is turned to the guide shell 18 side.
[0027]
The carrier arm cylinder 58 is extended to rotate the carrier arm 53, the clamp cylinder 60 is slightly extended, and the rod 3 is held by the clamp hook 54 so as to be rotatable.
At this time, since the rotator device 7 is fixed to the carrier arm shaft 56, the rotator device 7 has moved to the drill axis X. Therefore, the rotator arm cylinder 81 is extended, the tip portions of the rotator arms 72L and 72R are closed as shown in FIG. 7, and the rod 3 is sandwiched between the left and right belts 76L and 76R so as to be rotated.
[0028]
When the tips of the rotator arms 72L and 72R are closed and the rod 3 is sandwiched, the belts 76L and 76R are flexible, and the rotator arms 72L and 72R can swing within a range restricted by the stopper 84. As shown in FIG. 8 and FIG. 9, even if there is a slight misalignment in the positional relationship between the rod 3 and the belts 76L and 76R, the rod 3 can be securely held.
[0029]
The rock drill 19 is moved backward while being reversed, and the head shaft 71 is rotated by the rotator motor 78 to drive the belts 76L and 76R, thereby rotating the rod 3 so that the front end of the rod 3 is first rotated. Is detached from the sleeve at the rear end of the front rod 3. At this time, since the contact area between the belts 76L and 76R and the rod is large, the transmission efficiency of the rotational force is high and the separation is reliably performed.
[0030]
The rock drill 19 is stopped from retreating at a predetermined recovery position, the clamp cylinder 60 is extended, and the rod 3 is clamped by the clamp hook 54. Then, the rock drill 19 is again moved backward while being reversed to separate the shank rod from the sleeve at the rear end of the rod 3. During this time, the magazine 4 is rotated to perform alignment so that the empty storage port 47 can store the rod 3.
[0031]
After the carrier arm cylinder 58 is shortened and the carrier arm 53 is rotated to disengage the rod 3 from the drill axis X, the carrier boom cylinder 55 is extended to rotate the carrier boom 52 to the magazine 4 side. At this time, if the carrier arm cylinder 58 is not expanded and contracted, the rod 3 moves linearly to the magazine 4 side by the action of the link 57.
[0032]
The carrier arm cylinder 58 is extended to rotate the carrier arm 53, and the rod 3 is stored in the storage port 47. The clamp cylinder 60 is shortened to open the clamp hook 54, and at the same time, the rotator arm cylinder 81 is shortened to open the distal ends of the rotator arms 72L and 72R, and the recovery of the rod 3 at the rear end is completed.
Therefore, the rock drill 19 is moved forward and rotated forward to connect the shank rod to the sleeve of the front rod 3, open the centralizer clamp, and repeat the above cycle again.
[0033]
Although the embodiment in which the rotator device of the present invention is used for the rod changer of the drilling machine has been described above, it can be effectively used when rotating a rod-like body other than the rod of the drilling machine.
[0034]
【The invention's effect】
As described above, according to the rotator device of the present invention, since the rod-shaped body is clamped using a flexible belt, there is no problem even if there is a slight misalignment, and therefore the initial positioning is extremely high. It becomes easy.
Further, since the contact between the rod-like body and the belt is a surface contact, the transmission efficiency of the rotational force is high and the rotation is reliably transmitted.
[0035]
The rotator device has a simple structure, a small number of parts, can be miniaturized, and can be manufactured at low cost.
[Brief description of the drawings]
FIG. 1 is a side view of a drilling machine equipped with a rod changer equipped with a rotator device according to an embodiment of the present invention.
FIG. 2 is a front view of a rod changer.
FIG. 3 is a plan view of a rod changer.
4 is an end view taken along line AA in FIG. 3;
FIG. 5 is an explanatory view of an opening / closing mechanism of a rotator arm.
FIG. 6 is an explanatory diagram of the operation of the belt.
FIG. 7 is an explanatory view of the operation of the belt.
FIG. 8 is an explanatory diagram of the operation of the belt.
FIG. 9 is an explanatory diagram of the operation of the belt.
FIG. 10 is an explanatory diagram of a conventional rotator device.
FIG. 11 is an explanatory diagram of rotation transmission of a conventional rotator device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Drilling machine 2 Rod changer 3 Rod 4 Magazine 5 Rod carrier 7 Rotator apparatus 11 Carriage 12 Tilt boom 14 Swing boom 16 Turning mechanism 18 Guide shell 19 Drilling machine 44 Magazine frame 47 Storage port 51 Carrier boom shaft 52 Carrier boom 53 Carrier Arm 54 Clamp hook 55 Carrier boom cylinder 56 Carrier arm shaft 57 Link 58 Carrier arm cylinder 60 Clamp cylinder 70 Rotator frame 71 Head shaft 72L, 72R Rotator arm 73L, 73R Tail shaft 74 Head pulley 75L, 75R Tail pulley 76L, 76R Belt 77 Sprocket 78 Motor for rotator 80 Chain 81 Rotator arm cylinder 82 Spring

Claims (1)

A rotator device for rotating a rod-shaped body, wherein a head pulley is provided on a head shaft supported by a rotator frame, and a tail pulley is provided on each tail shaft supported by an openable left and right rotator arm. A rotator device characterized in that a belt for holding a rod-like body in between is stretched.

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