JPH0519638B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a rod support device in a rod changing device for a crawler drill used for drilling work, etc.

BACKGROUND OF THE INVENTION In a crawler drill that uses a drilling device mounted on a vehicle to drill into the ground, rods must be added sequentially as the drilling progresses. For this purpose, a rod changing device is provided.

Problems to be Solved by the Invention Conventional devices require power to carry the rods to the exchange position and a power system to move the rods in the rod exchanger to the loading/unloading entrance. The mechanism becomes complicated, as it requires a device to open and close the gate at the loading/unloading entrance.
The drawback was that the weight of the device was heavy and the cost was high.

Means for Solving the Problems (a) A single hydraulic cylinder is used to move the rod into and out of the rod changing device to the changing position.

(b) A rod receiving device 6 is provided to reliably add and collect rods.

(c) Provide a stopper, ratchet mechanism, rod holder, etc. to ensure reliable operation in any working position.

Function (a) The rod is securely held by the action of the lumped holder of the rod receiving device, and rods can be added and recovered easily and reliably.

(b) During drilling, the rod support 62 moves forward and falls over, shortening its length in the longitudinal direction, so that the forward distance of the drifter 3 can be increased.

Embodiment In FIGS. 1 to 12, 1 is a guide cell support mounted on a vehicle so as to be able to rise and fall freely, and 2 is a guide cell support that is slidably mounted on the guide cell support 1 according to the distance between the drilling point and the vehicle body. Guide cell, 3
4 is a drifter that moves back and forth on the guide cell 2 and applies impact and rotation to the rod; 4 is a centralizer that is attached to the tip of the guide cell 2 and supports and guides the rod;
5 is a rod exchange device, and 6 is a rod receiving device.

7 is a chain for moving the drifter 3 forward and backward;
8 is a sprocket, 9 is a rod, and 10 is a sleeve.

The rod changing device 5 is composed of a magazine device 11 and an indexing device 12, and has a structure capable of accommodating a plurality of rods, and is capable of adding and collecting rods. The swing arms 13 and 41 are fixed to shafts 37 and 36, and the shaft 36 is attached to the brackets 31 and 54 attached to the guide cell 2.
It can be rotatably attached to. Magazine device 11
consists of a magazine plate 17, a clamp 15, a lock cylinder 24, a hydraulic cylinder 32, etc. By extending the hydraulic cylinder 32, the rod changing device 5 can be moved to the rod changing position; A sleeve 10A with a rod 9A screwed thereon can be sandwiched between the clamp 15 and the sleeve 10A.

The indexing device 12 consists of a plate 43 having the same shape as the magazine plate 17, a cam device 45, etc., and the magazine plate 17 and the plate 43 are kept in one place when adding and collecting rods.
Accurate positioning of each phase is performed by pitch rotation.

The rod receiving device 6 consists of the following members: 61 is a hook, 62 is a rod support,
The hook 61 and the rod support 62 are connected by a bar 63. A pawl 64 is rotatably attached to the hook 61 via a pin 65. A torsion spring 66 is attached to the pin 65 and has one end attached to the plate 67 of the hook 61 and the other end pressed against the lower end of the plate 61a to apply a downward force to the pawl 64. 68 is a ratchet fixed to the guide cell 2, 69 is a guide for the hook 61 attached to the guide cell 2, and 70 is a stopper fixed to the guide cell 2. The plate 67 has locking portions 67a and 67b.

In the rod support 62, 71 is a bracket that is movable while being guided by the guide cell 2, and 72 is a support rotatably attached to the bracket 71 by a shaft 73. 74 is a torsion spring;
It is attached to the shaft 73 and is pressed against the upper surface of the bracket 71 and the back surface of the support 72 to apply a forward force to the support 72. 75 is a plate fixed to the front surface of the support 72, and 76 is a roller attached to the plate 75. 77 is a plate fixed to the side surface of the support 72, and 78 is a rod holder rotatably attached to the plate 79 fixed to the plate 77 via a pin 80. The support 72 and the rod holder 78 have a recess 7 for receiving the rod 9A.
2a and 78a are provided. A leaf spring 81 is attached to the plate 79 and urges the rod holder 78 downward. 82 is an inclined plate fixed to the guide cell 2. 83 is only one long pin among the pins used to connect the chain 7, and is capable of engaging with the locking portions 67a, 67b of the hook 61.

Adding a rod is done as follows: (When adding a new rod 9A to a rod 9 that has already been propelled underground) (1) When the rod 9 that is being propelled reaches a predetermined position, move the drifter 3 to the guide cell. Retreat along line 2.

At that time, the long pin 83 incorporated in the chain 7 moves rearward due to the drive of the chain 7, and the pawl 6
4 and pushes up, so that the pawl is released from the ratchet 68. (Figure 12) Long pin 83
pushes the locking portion 67b of the hook 61, and the rod receiving device 6 moves backward together with the drifter 3.
(Fig. 11 → Fig. 5) As the rod receiving device 6 retreats, the roller 76 of the rod support 62 is gradually lifted upward along the inclined plate 82, and eventually reverses, allowing the support 77 to receive the rod. becomes. (Figures 11 and 9) (2) Extend the hydraulic cylinder 32 of the rod exchange device 5 and tilt the swing arms 13, 41 forward.

(3) Extend the lock cylinder 24 and
Clamp 1 the sleeve 10AA screwed with A
5 and grip it. (Figures 3 and 4) At this time,
The rod 9A to be spliced coincides with the drilling center line.

(4) Move the drifter 3 forward and screw it into the sleeve 10A while rotating to connect it.

(5) After retracting the lock cylinder 24 to release the lock, retract the hydraulic cylinder 32 and return the swing arms 13, 41 to their original positions. At this time, sleeve 10A (and rod 9A)
exits through the loading/unloading port 13a of the swing arm 13 and the loading/unloading port of the swing arm 41.
The sleeve 10A is fixed by the drifter 3, and the other is received by the rod support 62.

(5)-1 When the swing arm 13 returns to its original position, the sleeve 10A is fixed by the drifter 3, so the magazine plate 17 automatically rotates one pitch, and the cam device 45 ensures accurate positioning. It is done.

(6) Move the drifter 3 forward and screw the front end of the rod 9A and the sleeve 10 together.

(7) As the drifter 3 moves forward during the drilling operation, the long pin 83 incorporated in the chain 7 pushes the locking part 67a of the hook 61, and the rod receiving device 6
moves forward. As the rod receiving device 6 moves forward,
The roller 76 of the rod support 62 falls and rotates along the inclined surface of the inclined plate 82, and is removed from the rod 9A.

(8) After the long pin 83 passes through the sprocket 8 and is wound downward, the rod receiving device 6 is pushed by the drifter 3.

By repeating the above operations, the rods in the rod exchanger 5 are sequentially supplied to proceed with the drilling work.

The rod is recovered as follows: (When the rod is recovered after the drilling work is completed) (1) When the drilling work is completed, move the drifter 3 backward.

At that time, the pawl 6 is pushed up by the long pin 83.
4 is released from the ratchet 68.
(FIG. 12) The long pin 83 pushes the locking portion 67b of the hook 61, and the rod receiving device 6 moves backward together with the drifter 3. The rod support 62 will eventually turn over and receive the rod. (FIGS. 11 and 5) (2) With the sleeve 10 clamped by the centrifuge 4, the drifter 3 rotates the rod 9A to unscrew the sleeve 10 and the rod 9A.

(3) Extend the hydraulic cylinder 32 of the rod replacement part 5 and tilt the swing arms 13, 41 forward. At this time, sleeve 10A (and rod 9A)
enters from the loading/unloading entrance 13a of the swing arm 13 and the loading/unloading entrance of the swing arm 41.

(3)-1 When the swing arm 13 falls forward, the sleeve 10A is fixed by the drifter 3, so the magazine plate 17 is
By rotating the sleeve 10
Place A in a position where it can be clamped by the lock cylinder 24.

(4) To release the threaded engagement between the drifter 3 and the sleeve 10A, extend the lock cylinder 24 and grip the sleeve 10A with the clamp 15.

(5) By rotating the drifter 3, it is unscrewed from the sleeve 10A, and then the rod 9
A and the sleeve 10A are stored in the magazine device 11.

(6) Retract the hydraulic cylinder 32 and return the swing arm 13 to its original position.

By repeating the above operations, the rods are sequentially collected into the rod exchanging device 5.

Function of the rod support 62: When adding or retrieving rods, it moves to the rear, and when drilling, it moves to the front to lengthen the forward distance of the drifter 3. The rod is securely held between the support 72 and the rod holder 78.

Action between the locking parts 67a and 67b of the hook 61: After propelling the rod into the ground, the inside of the hole is cleaned. This is an operation in which the drifter 3 is moved back and forth many times to send air into the hole. It is undesirable for the rod support 62 to be raised and rotated each time the drifter 3 is changed back and forth, so the locking parts 67a and 67b are separated and the long pin 83
The locking portions 67a and 67b are prevented from operating.

Action of the ratchet 68: The engagement of the pawl 64 with the ratchet 68 prevents the rod receiving device 6 from retreating when the guide cell 2 is turned upward.

The long pin 83 of the chain 7 for moving the drifter 3 comes into contact with the pawl 64, and due to the pressing force of the long pin 83, its pawl is released from engagement with the ratchet 68, allowing the rod receiving device 6 to move rearward. becomes.

Function of stopper 70: Eliminates the inconvenience of receiving the entire weight of the rod receiving device 6 only by the long pin 83 when the guide cell 2 is directed upward.

Effects of the Invention (a) The provision of the rod receiving device 6 makes it possible to reliably add and collect rods, and the provision of the rod holder 78 allows the rod to be replaced in any working position by holding the rod.

(b) During drilling, the rod support 62 moves forward and falls over, shortening its length in the longitudinal direction, so that the forward distance of the drifter 3 can be increased.

(c) At a distance from the hook 61, the locking part 61
Since the rod supports 61a and 61b are provided, the rod support 62 does not move when the drifter is moved back and forth many times to clean the inside of the hole.

(d) Even when the guide cell 2 is turned upward by the ratchet 68, the rod receiving device 6 does not retreat.

(E) When the guide cell 2 is facing upward, even if the rod receiving device 6 moves rearward beyond the ratchet 68, the weight of the rod receiving device 6 can be received by the stopper 70 without moving backward.

[Brief explanation of the drawing]

1 to 12 show embodiments of the rod support device for a crawler drill according to the present invention.
The figure is a side view showing the front part of the guide cell of the crawler drill, FIG. 2 is a sectional view showing the lot exchanger, FIG. 3 is a sectional view of FIG. 2, and FIG. 4 is a sectional view of FIG.
5 is a side view schematically showing the rod receiving device, FIG. 6 is a cross-sectional view of FIG. 5, FIG. 7 is a cross-sectional view of FIG. 8, and FIG. 8 is a side view of the rod receiving device.
A sectional view, FIG. 9 is a side view showing the rod cradle,
FIG. 10 is a cross-sectional view taken from FIG. 9, and FIGS. 11 and 12 are explanatory views of the operation. 1... Guide cell support, 2... Guide cell, 3... Drifter, 5... Rod exchange device, 6
... Rod receiving device, 9 ... Rod, 11 ... Magazine device, 71 ... Bracket, 72 ... Support, 76 ... Roller, 77 ... Plate, 78
... Rod holder, 81 ... Leaf spring, 82 ... Inclined plate.

Claims (1)

[Claims] 1. A rod changing device 5 consisting of a magazine device 11 and an indexing device 12 rotatably attached to a shaft 36 on the side of the guide cell 2 in which the drifter moves back and forth, in which the swing arm 13 of the magazine device 11 rotates. In this crawler drill rod changing device, which is equipped with a magazine device that can feed the rod onto the center line of the drill hole and retrieve the rod that is on the center line of the drill hole, the rod is connected to the hook 61 and the bar 63, and the guide cell is moved by the movement of the drifter. 2. Rod support 62 and support 72 moving up.
On the front side, there is an inclined plate 8 fixed to the guide cell.
A rod holder 78 is provided at the rear of the support 72, and the rod holder 78 is biased downward by a leaf spring 81 to rotate the support 72.
The support 72 holds the rod between the recess 72a of the rod holder and the recess 78a of the rod holder.
A rod support device for a crawler drill characterized by being biased forward at 4.