JPH0633704B2 - Rod guide and connecting device for punching machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a rod guide / coupling device for a drilling machine such as a crawler drill.

(Prior Art) A conventional example of the rod guide / coupling device is the sixth, seventh, and eighth examples.
As shown in the figure, a pair of left and right hydraulic cylinders (a) (a) arranged on a mounting frame (5) in front of a support member (4) on which a punching machine (1) is movably mounted. ), During drilling work, as shown in FIG. 7, the rods (2a) and (2b) are pushed by the clamp recesses (c) and (c) at the tips of the rods (b) and (b) of the hydraulic cylinders (a) and (a). Move forward and backward,
When guiding the rod rotatably and disconnecting the rod, tighten the rod (2a) that is added and connected by the clamp recesses (c) (c) of the hydraulic cylinders (a) (a), hold the clamp, and punch. The rod (2b) is rotated by the machine (1) to disconnect the screw connection portion between the rods (2a) and (2b), and is connected by reverse rotation. In the figure
(3) is a bit for punching.

(Problems to be Solved by the Invention) The rod guide / coupling device of the drilling machine is shown in FIG. 8 when the rod axis is apt to move to the left and right during drilling and the rod is clamped by operating the hydraulic cylinder. As described above, the rod may be held in an eccentric position, which makes it difficult to align the rod when disconnecting or adding the rod, and at the same time, the rod may bend or seizure may occur at the screw connection part, or even when shocking during drilling. It becomes more difficult to disconnect the screw connection part due to the generation of rotational force, especially in the case of a rock breaking machine that uses both rotational force and impact force, the tendency is remarkable, and the screw connection part cannot be disconnected due to the rotational force of the drilling machine itself. There are problems such as.

(Means for Solving Problems) The present invention is a rod guide / connecting device for a punching machine for coping with the above problems, in which a front part of a support member on which the punching machine is movably mounted is attached. The frame is provided with a pair of rod guide / clamp mechanism equipped with a rod guide portion and a clamping cylinder at an interval of the length of the rod screw connecting portion, and one of the rod guide / clamp mechanism is fixed to the mounting frame. , The other of the rod guide / clamp mechanism is rotatably mounted on the mounting frame and is movable in the rod axial direction, and is connected to the rotating cylinder to prevent eccentricity of the rod and to disconnect the rod, thus providing connection operation performance. To solve the above-mentioned problems.

(Operation) The rod is guided at a predetermined position by both rod guide portions of the pair of rod guide and clamp mechanism arranged on the mounting frame at the front of the support member on which the punching machine is movably mounted. The eccentricity is prevented, and the front and rear sides of the rod screw connecting portion are clamped and held by one rod guide and clamp mechanism fixed to the mounting frame, and are rotatably and movable in the rod axial direction on the mounting frame. It is clamped and held by the other rod guide / clamp mechanism, and the other rod guide / clamp mechanism is rotated by the rotating cylinder so that the rod is easily and smoothly separated or connected.

(Embodiment) FIG. 1 to FIG. 5 show an embodiment of the present invention.
In the figure, (1) is a perforator mounted on the support member (4) so as to be movable forward and backward, and (2a) and (2b) are connected to the perforator (1) and further connected to the rod of the drill. , (3) are punching bits, and a pair of rod guide / clamping mechanisms (10a), (10b) are arranged on the mounting frame (5) at the front of the supporting member (4).

The rod guide / clamp mechanism (10a) and (10b) will be described in detail. As shown in FIGS. 2 to 5, the rod guide / clamp mechanism (10a) is fitted in the ring (11a) and the ring (11a). Rod guide part (11a, 12a, 1) consisting of liner (13a) fixed with bolt (12a)
3a) and a cylinder (15) attached to the rod guide section.
a), a piston (16a), and a clamp cylinder (15a, 16a, 17a) fixed to the end of the piston rod and comprising a tooth (17a) opposite to the outer periphery of the rod. It is fixed with multiple bolts (18a).

The rod guide / clamp mechanism (10b) is a liner fixed to the three rings (11b) connected by a plurality of bolts (18b) and the center ring (11b) and fixed by the bolts (12b). (13b) Rod guide part (11b, 12
b, 13b, 18b), a cylinder (15b) attached to the rod guide portion, a piston (16b) and a tooth (17b) fixed to the end of the piston rod and facing the outer circumference of the rod (clamping cylinder (15b). , 16b, 17), and the rod guide portion (11b, 12b, 13b, 18b) includes a roller (11b, 12b, 13b, 18b) whose outer peripheral portion is rotatably provided on the mounting frame (5) side. 21) is rotatably supported, and an appropriate space (α) is formed between the mounting frame (5) and the end surface of the ring (11b), and together with the rod guide part, the clamping cylinder (15b,
16b, 17b) are arranged so as to be rotatable relative to the rod and movable in the rod axial direction.

Further, the rod guide and clamp mechanism (10a) and (1
0b) are arranged as shown in FIG. 2 at intervals of the length of the rod screw connecting portion (2c), and the rods (2a) and (2b) slide and slide in the liners (13a) and (13b). It is rotatably inserted and arranged.

Furthermore, the rotation cylinder (23) is connected to the pivot pin (24) (25) between the end of the arm (22) protruding from the rod guide and clamp mechanism (10b) and the bracket provided on the mounting frame (5). ), The clamp cylinders (15a, 16a, 17a),
(15b, 16b, 17b) and the rotation cylinder (23) are connected to an appropriate operating circuit (not shown) and individually extended and retracted.

The embodiment of the present invention has the above-mentioned structure, and when the screw connection part (2c) of the rods (2a) (2b) is cut off, it is mounted on the support member (4) as shown in FIG. Move the rods (2a) (2b) together with the punch (1) to move the screw connection (2
c) is placed between the rod guide and clamp mechanism (10a) and (10b), and the clamp cylinders (15a, 16a, 17a) and (15a
b, 16b, 17b) and extend the rod (2
Tighten (a) to clamp and fix the tooth (17
Tighten the rod (2b) with b) and clamp it,
Actuate the rotating cylinder (23) to move the arm (22)
When is swung, the rod guide (2b) together with the rod guide and clamp mechanism (10b) is rotated toward the loose side of the screw connecting part (2c) and moves in the axial direction of the rod so that the screw connecting part (2c) is loosened. If necessary, shorten the clamp cylinders (15b, 16b, 17) and the tooth (17b) to the rod (2
By separating from b) and rotating the rod (2b) by the punching machine (1), the screw connection part (2c) can be easily separated, and the addition connection of the rods can be similarly performed by the reverse operation.

During drilling, the clamp cylinders are shortened and the teeth (17a) and (17b) are retracted to release the clamps on the rods (2a) and (2b), and the rod guide and clamp mechanism (10
Since the liners (13a) and (13b) of (a) and (10b) hold and guide the rods (2a) and (2b) at fixed positions, there is almost no misalignment of the rods, and the rods can be easily added and connected. You can

Rod guide / clamp mechanism (10a) (10b) liner (13
a) (13b) is bolt (12a) to ring (11a) (11b)
Removably attached with (12b), tooth (17a) (17
b) is removably attached to the tip of the piston rod of the clamping cylinder, so that replacement due to wear of the tooth and liner exchange and combination corresponding to the change of the rod outer diameter can be easily performed. Each of the cylinders can be actuated not only by hydraulic pressure but also by compressed air.
The fixed arrangement, rotation, and movement arrangement of a) and (10b) are not limited to the illustrated example, but can be reversed.

(Effects of the Invention) The present invention has the above-described configuration, and includes a pair of rod guide / clamp mechanism arranged in the mounting frame at the front of the support member on which the punching machine is movably mounted. Both rod guides guide the rod at a predetermined position to prevent eccentricity, and the front and rear sides of the rod screw connection are clamped and held by one rod guide and clamp mechanism fixed to the mounting frame. It is clamped and held by the other rod guide and clamp mechanism that is rotatably mounted and movable in the rod axis direction, and the rod can be easily and smoothly separated or connected by rotating the other rod guide and clamp mechanism by the rotating cylinder. , Rod separation and connection performance have been significantly improved.

Although the present invention has been described with reference to the embodiments, the present invention is of course not limited to such embodiments, and various design modifications can be made without departing from the spirit of the present invention. .

[Brief description of drawings]

FIG. 1 is an overall side view mechanism diagram showing one embodiment of the present invention, and FIG.
The figure is an enlarged vertical sectional view of the portion II in Fig. 1, and Fig. 3 is the diagram in Fig. 2.
An enlarged view of the III part, FIG. 4 is an enlarged view of the IV part of FIG. 2,
FIG. 5 is a sectional view of a VV portion in FIG. 2, FIG. 6 is a general side view mechanism diagram of a conventional example, FIG. 7 is a vertical sectional view of a VII portion in FIG. 6, and FIG. It is an operation explanatory view of a figure. 1: punching machine, 2a, 2b: rod 2c: screw connection part, 4: supporting member 5: mounting frame 10a, 10b: rod guide and clamp mechanism 11a, 12a, 13a-11b, 12b, 13b: rod guide part 15a, 16a, 17a-15b, 16b, 17b: Cylinder for clamping 23: Cylinder for rotation

Claims (1)

[Claims] 1. A pair of rod guide / clamp mechanism equipped with a rod guide portion and a clamping cylinder at a mounting frame at a front portion of a supporting member on which a punching machine is movably mounted, with a length interval between rod screw connecting portions. And one of the rod guide and clamp mechanism is fixed to the mounting frame, and the other of the rod guide and clamp mechanism is rotatably mounted on the mounting frame and movable in the rod axial direction for rotation. A rod guide and connecting device for a punching machine, which is connected to a cylinder.