JP2001323770A - Rod-exchanging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the transport time of a rod by carrying the rod without using any rotator devices, and to facilitate the thread-cutting operation when recovering the rod so that even an inexperienced person can patch and recover the rod rapidly. SOLUTION: A rod clamp device 5, a rotator device 6, and a sleeve clamp device 7 are provided on a swing shaft 4 that is supported in parallel with a guide shell 1 of a punching device back and forth while they are separated one another. Also, a rod clamp part 12, a rotator part 18, and a sleeve clamp part 15 are provided at the rod clamp device 5, the rotator device 6, and the sleeve clamp device 7 so that they can be slid freely in a direction for orthogonally crossing the swing shaft 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rod exchanging device for adding and collecting rods of a drilling device.

[0002]

2. Description of the Related Art In a drilling device such as a crawler drill, a shank rod is inserted into a rock drill mounted on a guide shell, and a rod of a predetermined length is connected to the shank rod via a sleeve. Installs the bit, transmits the blow and rotation from the rock drill to the bit, and feeds the rock drill to drill the rock. When drilling a long hole whose drilling length is longer than that of the rod, the rod is added by using a rod exchange device in the middle of the drilling. When the drilling reaches the target drilling length and the drilling is completed, the rod is cut off using a rod exchange device and collected.

A conventional rod exchanging device is provided with a rod clamp device for screwing and threading a connecting portion of a rod using the rotation of a rock drill, and a rotator device for rotating a rod with the rotator device. In some cases, the connecting portion of the rod is screwed and threaded.
A rod exchange device that uses the rotation of a rock drill to screw in and thread a rod connection is difficult to rotate and feed the rock drill at the time of screw cutting, and it takes time to collect the rod unless a skilled operator is used. In other words, work efficiency becomes poor.

On the other hand, a rod exchanging device for screwing and threading a connecting portion of a rod by rotating the rod with a rotator device is simple in operation at the time of threading, so that even a non-skilled operator can add and recover a rod. Can be easily performed. This rod exchange device is shown in FIG.
As shown in FIG. 5, a rotator device 62 and a sleeve clamp device 64 are provided at the front and rear (left and right in the figure) of the guide shell 61. As shown in FIG. 7, the rotator device 62 provided at the front portion includes a swing arm 72 pivotally supported by a rod rack 71 fixed to the guide shell 61 and a rotator portion 73 supported by the swing arm 72. And As shown in FIG. 8, a sleeve clamp device 64 provided at a rear portion includes a swing arm 82 pivotally supported by a rod rack portion 81 fixed to a guide shell 61, and a sleeve supported by the swing arm 82. And a clamp portion 83.

When connecting the rod, the sleeve of the rod connected to the shank rod of the rock drill is fixed by the centralizer 66 at the tip of the guide shell 61, and the rock drill is reversed and retracted. After separating the shank rod from the sleeve and retracting the rock drill to the rear end of the guide shell 61, the rotator 73 and the sleeve clamp 83 grip the front and rear of the rod 65 stored in the rod racks 71, 81. And swing arms 72, 8
2 is operated to convey the rod 65 to the drill axis X,
The sleeve clamp part 83 is loosened, the rod 65 is rotated forward by the rotator part 73, and the rod 65 is screwed and connected to the sleeve of the previous rod. Next, the sleeve clamp portion 83 is closed to fix the sleeve at the rear end of the rod 65, and the rock drill is rotated forward and forward to connect the shank rod to the sleeve.

When the rod 65 is to be recovered, the rock drill is retracted, the rod 65 is pulled out of the hole, and the swing arms 72 and 82 are operated to place the rotator 73 and the sleeve clamp 83 on the guide shell 61. Then, the sleeve clamp portion 83 is closed to fix the sleeve at the rear end of the rod 65, and the rock drill is reversed and retracted to separate the shank rod from the sleeve. Next, the sleeve clamp part 83 is loosened, the rotator part 73 is closed, and the rod 6
5. Reverse rotation of rod 5 to separate rod 65 from sleeve of previous rod.

Then, the rod 65 separated by the rotator 73 and the sleeve clamp 83 is gripped, and the swing arms 72 and 82 are operated to retract the rotator 73 and the sleeve clamp 83 from above the guide shell 61. The rod 65 is stored in the rod racks 71 and 81.

[0008]

In this rod exchanging device, the rotator 73 includes a plurality of rollers 74 for gripping the rod 65 and an opening / closing mechanism 75 for opening and closing the rollers 74.
And a rotation mechanism (not shown) for rotating the roller 74 and a slide mechanism 77 for sliding the roller 74 back and forth, so that the weight is large. Therefore, the moment of the swing arm 72 increases, and the swing operation cannot be performed quickly, and the time required for transporting the rod 65 increases. Further, as shown in FIG. 7, since the outer width W of the roller 74 and the distance L from the center of the rod 65 to the roller 74 are large, interference occurs when the rod 65 is transferred from the rod rack 71. If the shape of the swing arm 72 is devised to avoid this interference, the moving path becomes longer, and as a result, the time required for transporting the rod 65 is further increased.

The present invention solves the above-mentioned problem in the rod exchanging device, and can convey the rod without using the rotator device, shorten the time for conveying the rod, and perform thread cutting when collecting the rod. It is an object of the present invention to provide a rod exchanging device which is easy to operate and enables even an unskilled person to quickly recover a rod.

[0010]

According to the present invention, there is provided a rod exchanging device which includes a rod clamp device, a rotator device, and a sleeve clamp device on a swing shaft supported in parallel with a guide shell of a drilling device. Disposed apart from each other, the rod clamp device, a rotator device,
In the sleeve clamp device, the above-mentioned problem is solved by providing a rod clamp portion, a rotator portion, and a sleeve clamp portion so as to be slidable in a direction orthogonal to the swing axis.

In order to connect the rod, the sleeve of the rod connected to the shank rod of the rock drill is fixed with the centralizer at the tip of the guide shell, and the rock drill is reversed and retracted to make the shank rod. And retract the rock drill to the rear end of the guide shell. Next, the front and rear sides of the rod stored in the rod rack are gripped by the rod clamp and the sleeve clamp, and the rod clamp and the sleeve clamp are slid away from the rod rack to rotate the swing shaft. Then, the rod clamp section and the sleeve clamp section are slid toward the guide shell side to convey the rod on the axis of the drilling hole.

Then, the rock drill is rotated forward and forward, the shank rod is screwed into the sleeve at the rear end of the rod, the rod clamp section and the sleeve clamp section are loosened to hold the rod rotatably, and the rock drill is rotated forward. Roll forward and rotate the rod forward and screw it into the sleeve of the previous rod. After connection, the rod clamp and the sleeve clamp are slid and retracted from the guide shell side.

When the rod is to be recovered, the rock drill is retracted and the rod is pulled out of the hole, and then the swing shaft is rotated to slide the rod clamp, the rotator and the sleeve clamp. Move onto the guide shell, close the sleeve clamp, and fix the sleeve at the rear end of the rod. Therefore, the rock drill is reversed and retracted to separate the shank rod from the sleeve. Then, the sleeve clamp is loosened, the rotator is closed, and the rod is rotated in the reverse direction to separate the rod from the sleeve of the previous rod.

Then, the rod clamp and the sleeve clamp are closed, the rotator is opened, and the rod clamp, the rotator and the sleeve clamp are slid away from the guide shell, and the swing shaft is rotated. The rod clamp part and the sleeve clamp part are slid over the rod rack part, and the rod is stored in the rod rack part.

Since the rotator device is not used when the rod is transported, the moment of the swing axis does not increase, and there is no need to consider the interference between the rotator device and the rod rack device. Can,
The time required for rod transport is reduced. By providing a mode switching means for switching between a rotator use mode in which a rotator device is used during a rod threading operation and a rotator non-use mode in which a rotator device is not used, if the rotator device cannot be operated for some reason, the rotator is not used. By switching to the mode, the rod can be separated and collected using the rotation and feed of the rock drill.

A skilled operator who can quickly recover a rod without using a rotator device is:
It becomes possible to arbitrarily select a mode that is easy for the user to operate.

[0017]

FIG. 1 is a side view of a rod exchanging apparatus according to an embodiment of the present invention, FIG. 2 is a sectional view taken along the line AA of FIG. 1 showing the operation of a rod clamp unit, and FIG. FIG. 4 is a sectional view taken along the line BB of FIG. 1 showing the operation of the unit, FIG. 4 is a front view of the operation panel, and FIG. 5 is a side view of the operation panel. A rod rack 2 is supported by a bracket 3 on a side surface of the guide shell 1 of the drilling device.
A swing shaft 4 is supported in parallel with the guide shell 1. On this swing shaft 4, a rod clamp device 5, a rotator device 6, and a sleeve clamp device 7 are arranged separately from each other from the front (left side in the figure).

The rod rack portion 2 rotatably supports a rack disk 10 having a plurality of cutouts 9 for accommodating the rods 8 around the circumference. In the rod clamp device 5, a rod clamp unit 12 having a clamp mechanism 11 that can be opened and closed is slidably provided in a direction orthogonal to the swing shaft 4 by a slide mechanism 13.

The sleeve clamp device 7 includes a sleeve clamp unit 15 having a clamp mechanism 14 that can be opened and closed.
It is slidably provided in a direction orthogonal to the swing shaft 4 by a slide mechanism (not shown). The rotator device 6 includes a plurality of rollers 16 that grip the rod 8 and an opening / closing mechanism (not shown) that opens and closes the rollers 16.
A rotator unit 18 provided with a rotation mechanism (not shown) for rotating the swing shaft 4 is provided so as to be movable back and forth by a feed mechanism 17 and slidable in a direction orthogonal to the swing axis 4 by a slide mechanism 19.

An operating lever 21 of a rod exchanging device is provided on the front surface of the operating panel 20 of the drilling device. By tilting the operating lever 21, the rod exchanging device can be operated. On the side surface of the operation panel 20, a rotator selection switch 22 of a rod exchanging device, which is a mode switching means for switching between a rotator use mode using the rotator device 6 and a rotator non-use mode without using the rotator device 6, is provided. ing.

When connecting the rod 8, the operator fixes the sleeve of the rod connected to the shank rod of the rock drill with the centralizer at the tip of the guide shell 1 and reverses the rock drill. Retreat to separate the shank rod and retreat the rock drill to the rear end of the guide shell. Next, with the rotator selection switch 22 turned off, the operation lever 21 is tilted to the left. Then, as shown in FIG. 2A, the rod clamp portion 12 and the sleeve clamp portion 15 grip the front and rear of the rod 8 stored in the rod rack portion 2, and as shown in FIG. The part 12 and the sleeve clamp part 15 slide and are separated from the rod rack part 2 side, and the swing shaft 4 rotates as shown in FIG. 2C, and as shown in FIG.
The rod clamp portion 12 and the sleeve clamp portion 15 slide toward the guide shell 1 and convey the rod 8 onto the hole axis X.

Then, the rock drill is rotated forward and forward, the shank rod is screwed into the sleeve 28 at the rear end of the rod 8, the rod clamp portion 12 and the sleeve clamp portion 15 are loosened, and the rod 8 is rotatably held. The rock drill is rotated forward and forward to rotate the rod 8 forward, and is screwed and connected to the sleeve of the previous rod. After the connection, when the operation lever 21 is tilted to the right, the rod clamp portion 12 and the sleeve clamp portion 15 slide and retreat from the guide shell 1 side, and the swing shaft 4 rotates, and as shown in FIG. Return to position.

Since the rotator selection switch 22 is off, the rotator 18 does not slide during this time and is in the position shown in FIG. 3A or 3B. In the case of making a long hole that requires connecting a number of rods 8, the hole and the above-described rod connection process are repeated thereafter. When recovering the rod 8, the operator retracts the rock drill, pulls the rod 8 out of the hole,
The rotator selection switch 22 is turned on, and the operation lever 21
Tilt to the left. Then, the swing shaft 4 rotates,
The rod clamp portion 12, the rotator portion 18, and the sleeve clamp portion 15 slide and move onto the guide shell 1, and the sleeve clamp portion 15 closes to fix the sleeve 28 at the rear end of the rod 8.

Then, the rock drill is reversed and retracted to separate the shank rod from the sleeve 28. Then, when the operation lever 21 is tilted upward, the sleeve clamp portion 15 is loosened, and as shown in FIG.
8 closes and the roller 16 reverses the rotation of the rod 8 and separates the rod 8 from the sleeve of the previous rod. At this time,
The roller 16 is moved rearward by the feed mechanism 17 in accordance with the pitch of the thread of the rod 8.

When the rod 8 is separated, the operation lever 2
Tilt 1 to the right. Then, the rod clamp 12
And the sleeve clamp 15 are closed, and the rotator 18
Is opened, the rod clamp part 12, the rotator part 18, and the sleeve clamp part 15 slide to slide the guide shell 1
The swing shaft 4 is retracted from above, and the rod clamp unit 12 and the sleeve clamp unit 15
The rod 8 is slid to the side and stored in the rod rack 2.

As described above, the rotator device 6 is not used when the rod 8 is conveyed regardless of whether the rotator selection switch 22 is turned on or off, so that the moment of the swing shaft 4 does not increase. Further, since there is no need to consider the interference between the rotator device 6 and the rod rack unit 2, the transport path can be shortened, and the time required for rod transport is reduced. The rotator selection switch 22 can switch between a rotator use mode in which the rotator device 6 is used during the threading operation of the rod 8 and a rotator non-use mode in which the rotator device 6 is not used, so that the rotator device 6 cannot be operated for some reason. In this case, the mode can be switched to the rotator non-use mode, and the rod 8 can be separated and recovered using the rotation / feed of the rock drill.

A skilled operator who can quickly recover the rod 8 without using the rotator device 6 can arbitrarily select and operate a mode that is easy to operate.

[0028]

As described above, in the rod exchanging device of the present invention, the rotator device is not used when the rod is transported, so that the moment of the swing axis does not increase, and the rotator device 6 and the rod rack section are not used. Since there is no need to consider the interference with the rod 2, the transfer path can be shortened, and the time required for rod transfer can be reduced. Since the rotator device 6 is used at the time of collecting the rod, the thread cutting operation is easy, and even an unskilled person can quickly and surely add and collect the rod.

If a mode switching means for switching between a rotator use mode using a rotator device at the time of rod threading operation and a rotator non-use mode not using the rotator device is provided, if the rotator device cannot be operated for some reason, The mode can be switched to the rotator non-use mode, and the rod can be separated and collected using the rotation and feed of the rock drill.

A skilled operator who can quickly collect rods without using a rotator device is:
It becomes possible to arbitrarily select a mode that is easy for the user to operate.

[Brief description of the drawings]

FIG. 1 is a side view of a rod exchanging device according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG. 1, showing the operation of the rod clamp unit.

FIG. 3 is a sectional view taken along the line BB of FIG. 1 showing the operation of the rotator unit.

FIG. 4 is a front view of the operation panel.

FIG. 5 is a side view of the operation panel.

FIG. 6 is a plan view of a conventional rod exchange device.

FIG. 7 is a sectional view taken along line CC of FIG. 6;

FIG. 8 is a sectional view taken along line DD of FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Guide shell 2 Rod rack part 3 Bracket 4 Swing axis 5 Rod clamp device 6 Rotator device 7 Sleeve clamp device 8 Rod 9 Notch 10 Rack disk 11 Clamp mechanism 12 Rod clamp part 13 Slide mechanism 14 Clamp mechanism 15 Sleeve clamp part 16 Roller 17 Feed mechanism 18 Rotator section 19 Slide mechanism 20 Operation panel 21 Operation lever 22 Rotator selection switch X Drilling axis

Claims (2)

[Claims] 1. A rod clamp device, a rotator device, and a sleeve clamp device are disposed on a swing shaft pivotally supported in parallel with a guide shell of a drilling device, and are spaced apart from each other in a front-rear direction. An apparatus, a rotator apparatus, and a sleeve clamp apparatus, wherein a rod clamp section, a rotator section, and a sleeve clamp section are provided slidably in a direction orthogonal to a swing axis, respectively. 2. The method according to claim 1, further comprising a mode switching means for switching between a rotator use mode using a rotator device and a rotator non-use mode not using the rotator device during a rod threading operation. Rod exchange device.