JPS58189493A - Rod exchange apparatus of drill - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rod changing device for a crawler drill that transports a rod to be added to a changing position.

Conventional crawler drills used for drilling rock are equipped with a rod magazine that stores multiple rods, and as the rock drilling progresses, the rods are carried from the rod magazine to a replacement position and are already propelled underground. It is attached to the rear end of the rod. The above rod magazine F)
A Various types of rod exchange devices have already been proposed for transporting the rods to the rod exchange position↓, but all of them require the power to transport the rods in the rod magazine to the exchange position and the amount of rods in the rod magazine to the transport position. There were disadvantages such as the power to move to the rondo was in a separate system, the structure was complicated due to the gate that opened and closed the opening at the loading/unloading position, and the reliability was low.

This invention has been made with the purpose of improving such drawbacks.The present invention is designed to simplify the power system by driving the rod magazine using the power for transporting the rods in the rod magazine to the exchange position. The aim is to provide a crawler drill rod replacement position that eliminates the need for a gate to open and close the opening at the gazine loading/unloading position, thereby simplifying the configuration and improving reliability due to the simplification of the power system. .

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.
In the figure, 1 is a guide cell attached to the body of a crawler drill (not shown) so that it can be raised and lowered, 2 is a drifter that is movably provided on the guide cell 2, and 3 is the drifter 2.
This is a rod that is rotated and propelled underground while being subjected to a υ impact, and a drill pit (not shown) is attached to the first part. 4 is the main body of the rod exchanging device of the present invention, which is constructed as follows.

That is, the main body 4 includes a plurality of brackets 5, for example, brackets 5, which project from one side of the guide cell 1 at intervals in the longitudinal direction.
6, a rod magazine 7 is provided at the base of the bracket 6, which is located between the brackets 5 and 6. The rod magazine 7 is formed at the base of the bracket and has a nine-round hole 7g.
It has rank 8 within. The above-mentioned rank 8 has a shape having a plurality of rond accommodation recesses s8α at equal intervals on the same circle,
A roller 9 that reduces the frictional resistance between the rack 8 and the rod 3 accommodated in the rod accommodating recess 8α is rotatably supported on the protruding portion 6b protruding between the rod accommodating recesses s8α. A connecting shaft 10 passes through the center portions of the racks g provided on each bracket b, and each rank 8 is connected to the connecting shaft 10 so as to be rotated simultaneously. Further, on both ends of the connecting shaft 10, rods 3 are accommodated in rod accommodating recesses 8α of each rack ε.
A support plate 11 is provided in contact with the open ends of the rods 3 to restrict the vertical movement of these rods 3, and both ends of the connecting shaft 10 reach the bracket 5. One bracket 5 and the connecting shaft 100 A detent indexer $12 is provided in between.

The detent indexing mechanism 12 is for positioning and stopping the rod 3 housed in each iron housing recess s8a at the iron loading/unloading position, and as shown in FIGS.
01111, a positioning roll 13 having a recess 913α in the same phase as each rod accommodation recess 8α of the rack 8, and a detect 14 having a ball 14g located around the positioning roll 13 and fitting into each recess 13cL. No, each ball 14α is pressed into the recess 1 by the compression spring 14b.
It is biased towards the 3a side.

-1 Each platen protruding from guide cell 1), 5.6
A drive shaft 15 is installed between the tops of the guide cell 1 so as to be parallel to the guide cell 1.
are supported, and a pair of exchange mechanisms 16 are provided on these drive shafts 15, located between each bracket 5 and 6. The exchange mechanism 16 consists of an arm member 17 fixed to the drive shaft 15 on the base end side, and a claw body 18 provided on the distal end m side of the arm member 17. The base end of each claw body 18 is pivotally connected to the tip m of the υ arm member 17 by a shaft 19A, and the base 1 of each claw body 18 and the grip cylinder 19 provided in the arm member 17 are connected to each other by a shaft 19A. The tip end of the piston rod 19cL is connected via a link 20, and the grip cylinder 19 allows the tip side of each claw body 18 to freely open and close to the solid line and imaginary line positions shown in FIG. The rod 3 can be gripped between the holder 178 and the receiver 178 formed at the tip of the arm member I7. A base end portion of a lever 21 is fixed to the -1 side of the drive shaft 15. A cylinder portion 22α is rotatably supported on the bracket 5 at the tip of the lever 21, and the tip of a piston rod 22α of the nine-swivel cylinder 22 is pivotally attached.
The drive shaft 15 is rotated by this turning cylinder 22, and the exchange mechanism 16 attached to the drive shaft 15 is thereby moved to the solid line position one pitch behind the iron loading/unloading position A shown in FIG. From Rondo exchange position fjj
It is designed to be rotated to the virtual line position indicated by tBK.

During drilling work, a new rod 3 is transferred from the rod magazine 7 to the rod exchange position B, and the operation of adding it to the trailing position of the nine rods 3 that have already been propelled into the ground will be explained below. When the inner rod 3 reaches a predetermined position, the drifter 2 is moved backward along the guide cell 1, and then the grip cylinder 19 closes the claw body 1g of the exchange mechanism 16, which is waiting at the solid line position in FIG. , rod 3 in rod magazine 7
grasp. In this state, when the exchange mechanism 16 is rotated clockwise (see Fig. 3) by the rotating cylinder 22 via the drive shaft 15, the cylinder magazine 70 rack 8 is rotated by the rod 3 held by the claw body 18. The rod 3 gripped by the claw body 18 is rotated one pitch clockwise and reaches the rondo loading/unloading position, and the connecting shaft 10
The ball 14g of the nine detent indexing mechanism 12 is installed at the end of the
falls into the concave portion 13α of the positioning roll 13 and becomes 2 pieces 8
stop rotating. When the drive shaft 15 is further rotated,
The rod 3 located at the rond carry-in/out position A is carried out by the exchange mechanism 16 through the carry-in/out port 6h formed by cutting out a part of the circular hole 6g, and is carried into the rod exchange position B on the guide cell 1. The drifter 2 is waiting behind the rod exchange position B, moves forward as the rod 3 is carried in, and screws both ends of the rod 3 into the sleeve 2α of the drifter 2 and the sleeve 3α of the rod 3 that has already been propelled underground. The rod 3 is connected and drilling is started again while applying shock and rotation to the newly added rod 3.The exchange mechanism 16, which has completed supplying the rod 3, is shown in the solid line in FIG. 3 with the claw body 18 opened. It is retreated to position and waits for the next rod supply.

By repeating the above operations, the rods 3 in the rod magazine 7 are successively supplied to the rod exchange position to be used for drilling underground.

In the above embodiment, the operation of transporting the rod 3 in the rod magazine 7 to the rod exchange position B was explained, but after drilling is completed and the rod 3 is used, the nine rods 3 are transferred to the rod magazine 7.
Of course, it is also possible to store it inside, and the operation is simply the reverse of the above-mentioned import, so a description thereof will be omitted.
- Also, in order to prevent the rack 8 of the rod magazine 7 from becoming unrotatable due to a failure of the hydraulic system, etc., a 1° polygonal handle is attached to the end of the connecting shaft 10 opposite to the detent mechanism 12 at the section 11a. A handle is attached to the part of the shaft 10 so that the connecting shaft 10 can be rotated manually.

As detailed above, this invention requires a power source to drive the rod magazine because the rods in the rod magazine are fed one pinch when the rods stored in the rod magazine are carried to the rod exchange position. In addition, the next rod to be added should be placed at the rond loading/unloading position.
Since it is on standby behind the pitch, there is no need to provide a gate to close the rod loading/unloading port that opens at the rondo loading/unloading position during the waiting period. This simplifies the structure of the rod magazine and rod exchange mechanism compared to conventional ones, and further improves reliability by simplifying the power system.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which FIG. 1 is an overall perspective view, FIG. 2 is a side view of the device, and FIG. 3 is a view of FIG.
4 is a sectional view taken along line 1/-W in FIG. 2, FIG. 5 is a sectional view taken along line V-V in FIG. 2, and FIG. 6 is a sectional view taken along line 1/-W in FIG. It is a sectional view along a line. 1 is a guide cell, 2 is a drifter, 3 is a rod, 7 is a rod magazine, 8 is a rank, 8α is a rod accommodation recess, 16
17 is an exchange mechanism, 17 is an arm member, 18 is a claw body, and 19 is a grip cylinder. Applicant Komatsu Ltd. Representative Patent Attorney Masaaki Yonehara Patent Attorney Tadashi Hamamoto Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] A friend guide cell 1 is provided on a self-propelled vehicle body so that it can be raised and lowered freely, and a rod 3 is provided so as to be movable along the guide cell 1 and is carried into a rod replacement position B on the guide cell 1.
A rod magazine having a rotatable rank 8t which is provided on the side of the guide cell 1 and accommodates the rods 3 in a plurality of rod accommodating recesses 811. 7, an exchange mechanism 16 located near the rod magazine 7 and having a claw body 1ε at the tip of the arm member 17 that can be opened and closed by a grip cylinder 19; One pitch behind,
A rod changing device for a crawler drill, comprising a rotating means for rotating the changing mechanism 16 holding the rod 3 (by the claw body 18) at a rod changing position Bj.