JPS6316558B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rod changing device for a drilling device in which a drilling machine is supported on a guide shell so as to be able to move forward and backward, and a plurality of rods are used to drill holes.
In particular, when a rod storage body is rotatably provided so as to be close to or away from the axis of the drilling machine, when the rods are transferred to a replenishing position or a storage position using a transfer device installed in the storage body, the rod transfer amount is controlled. In addition to detecting and controlling the transfer actuator, a sleeve clamp device is provided in the rear storage body and a rod rotation device is provided in the front storage body so that the rod can be replaced safely and reliably.

When drilling holes by connecting multiple rods in sequence, it is inefficient and dangerous to manually add and collect the rods, so mechanization is required, and the rod storage structure is A rod changing device (Special Publication in 1973) that mechanically interlocks the rotating action to bring the rod closer to and away from the axis of the drilling machine and the transporting action to move the rod in and out of the storage body to quickly replace the rod. -16836) is proposed.

However, such a rod exchange device
The interlocking of the rod transfer action and the rotating action of the storage body affects the engagement and disengagement of the clutch when the rod changing device is moved backwards and forwards, etc., and it is easy for the operator to mistakenly engage and disengage the clutch, resulting in erroneous operation. When recovering the rod, if the screws are not fully removed and the drilling machine is reconnected to the rod and the screws are removed again, the storage body is temporarily evacuated, but at this time, the rod transfer device is erroneously linked. Attempts to insert a rod without the screws removed may cause damage to the bracket. In addition, the mechanism that limits the rotation of the driven sprocket by friction is
In some cases, the rod may slip and the rod transfer device may not be able to feed the rod accurately, making it impossible to accurately align the rod with the axis of the drilling machine.

The present invention provides a rod changing device that solves the above-mentioned problems in rod changing of a drilling device.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a rod changing device that can perform rod changing operations in the same order as manual rod changing operations and that does not cause erroneous operation due to operator error. The object of the present invention is to provide a rod changing device that can accurately transfer the rod and reliably align the rod position when changing the rod. To provide a rod exchange device which enables rod exchange and improves work efficiency.

That is, in the present invention, as in the illustrated embodiment, brackets 8 and 9 are provided at the front and rear parts of the guide shell 1, and each of the brackets 8 and 9 is provided with a groove 16 for storing the rod 5, which is open at one end. , 17 are rotatably pivoted by support shafts 12, 13 parallel to the axis θ of the drilling machine 2. In a rod changing device for a drilling machine, which is equipped with a transfer device 20 that reciprocates and carries in and out the rod 5, the transfer device 20 detects the transfer distance of the rod 5 and drives and stops the transfer actuator 30. A control switch 34 is provided, and the rear storage body 11
The present invention relates to a rod changing device characterized in that a sleeve clamp device 35 is rotatably provided, and a rod rotating device 40 is provided in the front storage body 10.

The present invention will be explained below with reference to illustrated embodiments. 1 and 2 are a side view and a plan view of a rod changing device which is an embodiment of the present invention,
Figures 3, 4, and 5 are the - line in Figure 2,
- line, - line sectional view. A drilling machine 2 is supported on a guide shell 1 of the drilling device so as to be able to move forward and backward, and on the axis θ of the drilling machine 2, a drilling rod 3 attached to the tip of the drilling machine 2 is
A rod 5 is screwed through the sleeve 4, a bit (not shown) is attached to the tip of the rod 5, and a hole is punched and rotated by the drilling machine 2.
A footpad 6 is provided at the tip of the guide shell 1, and a known centralizer 7 is attached to the footpad 6 for holding the rod 5 during drilling and for clamping the sleeve 4 when the rod 5 is replaced. There are brackets 8 and 9 on the front and rear sides of the guide shell 1 (same on the right and left in the figure).
is permanently installed. Rod storage bodies 10 and 11 are pivotally connected to the brackets 8 and 9, respectively, with support shafts 12 and 13 parallel to the axis θ of the drilling machine 2, and between the guide shell 1 and the rod storage bodies 10 and 11. Rotary cylinders 14 and 15 are attached to the holder so that the holder can rotate freely. The storage bodies 10 and 11 have grooves 16 and 17 for housing the rods 5 that are open at one end, and support plates 18 for supporting the front and rear of the rods 5 that are stored in the grooves 16 and 17. ,19
is provided.

In these storage bodies 10 and 11, the rod 5 is inserted into the groove 1.
A transfer device 20 is provided for carrying in the grooves 16, 17 or carrying them out from the grooves 16, 17 to the opening side. This transfer device 20 winds feed chains 25 and 26 between tension rollers 21 and 22 provided near the openings of the grooves 16 and 17 and feed sprockets 23 and 24 provided near the other ends of the grooves 16 and 17. , 17, and a feeding protrusion 27 is attached to the feeding chains 25, 26. The feed sprockets 23 and 24 are connected to each other in the same phase by a transmission shaft 29 having a driven sprocket 28 at the rear, and a drive sprocket 3 attached to a transfer actuator 30 provided in the storage body 11 at the rear.
A drive chain 32 is stretched between the driven sprocket 1 and the driven sprocket 28. Driven sprocket 28
Dogs 33 are fixed at predetermined intervals to detect the transfer distance of the rod from the amount of rotation thereof, and the storage body 11 has a control switch that stops driving the transfer actuator 30 when the dog 33 comes into contact with the rod. 34 have been installed.

Further, a sleeve clamp device 35 is provided in the storage body 11 at the rear. The sleeve clamp device 35 clamps the sleeve 4 by providing a clamp arm 38 that is opened and closed by a clamp cylinder 37 at one end of an arm bracket 36 that is pivotally connected to the storage body 11.
An arm cylinder 39 is provided between the other end and the storage body 11 to enable rotation.

The front storage body 10 is provided with a rod rotation device 40. The rod rotating device 40 is connected to the front storage body 1
Rail 4 laid parallel to the axis θ of the drilling machine at 0
1, a slide base 42 is mounted on the slide base 42 so as to be movable back and forth with a slide cylinder 43, a rotator body 44 is pivotally connected to the slide base 42, and a rotator cylinder 45 is mounted between the slide base 42 and the slide base 42.
It is possible to rotate. rotator body 4
4 includes a roller drive actuator 46 and a roller drive actuator 46 via a reduction gear (not shown) built in the rotator body 44.
Rod rotating roller 47 which is given rotation from
and two gripping rollers 48 and 49 for gripping the rod 5 to prevent it from falling under its own weight. The gripping rollers 48 and 49 are pivotally supported at one end of roller cases 52 and 53, which are pivotally connected to the rotator body 44 through swing shafts 50 and 51. A spring 55,
56 so that the rod 5 can be elastically gripped, and an opening cylinder 57 is provided so that the grip can be released.

Next, the work of adding rods 5 using this rod changing device will be explained. When the drilling by the previous rod 5a is completed, the sleeve 4a is clamped by the centralizer 7, the screw between it and the shaft rod 3 is cut off, the drilling machine 2 is moved backward, and then the storage bodies 10 and 11 are moved to the rotating cylinder. 14 and 15, it is rotated so as to be close to the axis θ of the drilling machine 2.
Next, the transfer actuator 30 is driven to rotate the driven sprocket 28, and the feed sprockets 23, 24 are rotated via the transmission shaft 29, thereby feeding the feed chains 25, 26.
The feed chains 25 and 26 push the rods 5 housed in the grooves 16 and 17 of the storage bodies 10 and 11 with the feed protrusions 27 and transfer them to the opening side. When the rod 5 is moved a predetermined distance, the dog 33 provided on the driven sprocket 28 is activated by the control switch 34.
is activated, and the transfer actuator 30 is stopped. Here, the rod 5 is moved between the three rollers 47, 48, 49 of the rod rotation device 40 and the clamp device 3.
5, and align it with the axis θ of the drilling machine 2, and while moving the drilling machine 2 forward, give rotation to the shank rod 3 in the screwing direction to screw the shank rod 3 and the sleeve 4 together. After that, loosen the clamp on the clamp arm 38,
The drilling machine 2 and the rod rotating station 40 are moved forward to screw the rod 5 and the sleeve 4a of the previous rod 5a to complete the addition. Then, the gripping rollers 48 and 49 are opened to rotate the storage bodies 10 and 11 in a direction away from the axis θ of the drilling machine 2, and the clamp of the sleeve 4a by the centralizer 7 is loosened to resume drilling. Thereafter, the required number of rods are added in the same manner according to the length of the hole to be drilled to complete the hole drilling. When the drilling is completed, the rod 5 is recovered.

Retract the drilling machine 2 to the position where the front sleeve 4a is clamped by the centralizer 7,
After clamping the sleeve 4a, the storage bodies 10,1
1 is rotated to align with the axis of the drilled hole 2, the clamping device 35 clamps the rear sleeve 4, and the rod rotating device 40 grips the rod 5. Then, the shunt lock 3 is reversed to disconnect the thread between it and the sleeve 4, and the clamping of the sleeve 4 by the clamping device 35 is loosened. Here, the roller drive actuator 46 of the rod rotation device 40 is activated, the rod 5 is elastically gripped by the rollers 47, 48, and 49, and the rod 5 is slid while being given reverse rotation by the rod rotation roller 47. cylinder 43
The rotator body 44 is moved backward.

When the rod 5 is completely separated from the previous sleeve 4a, the rotation of the rod rotation roller 47 is stopped, the transfer actuator 30 is reversed, and the rod 5 is carried into the grooves 16 and 17 of the storage bodies 10 and 11. do. At this time, the rotator cylinder 45 is further extended to advance the rotation of the rotator body 44, and the rod 5 is fed into the grooves 16, 17 while being held by the rollers 47, 48, 49, thereby preventing the rod 5 from falling. Make sure that rod 5 is in groove 1.
6, 17, the release cylinder 57 loosens the grip on the rod 5, and the rotator cylinder 4
5 and rotate the rotator body 44 outward, the storage bodies 10 and 11 are moved to the axis θ of the drilling machine 2.
Rotate and evacuate away from the object. Since the rotator cylinder 45 is extended in two stages as described above, using a double-acting cylinder allows easy and accurate feeding operation.

Below, the drilling machine 2 is advanced and the drilling machine 2 is moved forward.
is connected to the previous sleeve 4a, and the same operation is repeated in sequence to complete recovery.

As described above, according to the present invention, the procedure for replacing the rod is the same as that for replacing the rod manually, so that the rod can be accurately and reliably and easily aligned without causing any erroneous operation by the operator. Can be done. In addition, since the front and rear sleeves can be clamped, there is no risk of the sleeve falling off the rod due to loosening of the screws.Since support plates are provided at the front and rear of the housing, it can be used not only when drilling downwards, but also when drilling upwards. It can be safely used for drilling operations in any position.

[Brief explanation of the drawing]

1 and 2 are a side view and a plan view of a rod changing device which is an embodiment of the present invention, and FIGS.
- line, - line sectional view. In the figure, 1 is a guide shell, 2 is a drilling machine, 3 is a shank rod, 4, 4a are sleeves, 5, 5a
is a rod, 7 is a centralizer, 8 and 9 are brackets, 10 and 11 are storage bodies, 12 and 13 are spindles,
16 and 17 are grooves, 20 is a transfer device, 30 is a transfer actuator, 34 is a control switch, 35 is a sleeve clamp device, and 40 is a rod rotation device.

Claims (1)

[Claims] 1. Brackets are provided at the front and rear parts of the guide shell, and each of the brackets has a storage body in which a groove for storing rods with one end open is formed, which can be freely rotated on a support shaft parallel to the axis of the drilling machine. In a rod changing device for a drilling device, the storage body is provided with a transfer device that reciprocates along the groove to move the rod in and out, the transfer device detecting the transfer distance of the rod. A control switch is provided to drive and stop the transfer actuator, a sleeve clamp device is rotatably provided in the rear storage body, and a rod rotation device is provided in the front storage body so as to be movable back and forth. A rod exchange device featuring: