JPH062481A - Rod clamp device - Google Patents

Abstract

PURPOSE:To provide a simple structured rod clamping device which can grasp any of boring rods having different outside diameters by its center without replacing the clamp pieces. CONSTITUTION:A head side clamp piece 110 is furnished at a head side case, and on the side opposite this clamp piece 110, a piston side clamp piece 220 is arranged slidably at the tip of a piston rod 210. The head side clamp piece 110 is mounted on a supporting table 410 slidably together with a drive cylinder 200 through coupling tools 310, 320 installed on both side thereof, and the supporting table 410 is fixed to a boring machine with the aid of brackets 420, 430.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rod clamp device for holding a boring rod which is provided on a machine base such as a boring machine.

[0002]

2. Description of the Related Art A conventional rod clamp device has an actual flat blade 2
There are examples as shown in FIGS. 4 and 5 as disclosed in Japanese Patent Application No. 136192 (Jpn. Pat. Appln. KOKAI Publication No. 1-46544). In the figure, reference numerals 11 and 12 denote a pair of cases rotatably connected to each other by a pin 30, and clamp pieces 13 and 14 respectively.
Is slidably accommodated. First clamp piece 13
The sliding piece 32 having the rear portion formed on the inclined surface 15 is attached to the bolt 3
It is attached at 3. The pistons 1 of the sliding body 21 are attached to the cylinders 17 and 23 formed on the one case 11.
It houses 8 and 19. The sliding body 21 includes a pair of left and right pistons 18 and 19 and an operating rod 20 connecting the pistons 18 and 19.
Consists of The operation rod 20 is provided with a dovetail groove 31 (FIG. 5). The dovetail groove 31 is bored along the inclined surface 27, the sliding piece 32 is fitted in the dovetail groove 31, and the inclined surface 15 at the rear part thereof is the inclined surface 2 of the dovetail groove 31.
It is in contact with 7. Therefore, the oil is alternately supplied to the cylinders 17 and 23 of the pistons 18 and 19, so that the sliding body 21 slides left and right, so that the sliding piece 32 moves back and forth. Clamp piece 13
Is designed to slide back and forth.

The second clamp piece 14 is directly connected to the piston 24 and slides back and forth as oil enters and leaves the cylinder 25. In FIG. 4, when the sliding body 21 is at the left end, the center of the boring rod 1 shown by the chain line is visible. However, since the position of the clamp piece 13 that grips the boring rod 1 at the center position differs depending on the diameter of the boring rod 1, when the sliding body 21 is stopped at the left end as shown in FIG. Adjust the length of the clamp piece 13 so that the boring rod 1 can be held in the center by. That is, depending on the size of the diameter of the boring rod 1, the boring rod 1 is replaced with a clamp piece having a length that can be supported at the center. The clamp piece 13 is replaced by attaching and detaching the bolt 33.

Next, the operation of the rod clamp device will be described. FIG. 4 shows a state in which the boring rod 1 is clamped and grasped, but the boring rod 1 is clamped by the clamp pieces 13 and 1 while the boring rod 1 is being drilled by a boring machine (not shown).
It is open without being gripped at 4. In this open state, pressure oil is supplied to the flow paths 41, 44, and the flow paths 42, 43
The pressure oil of is open. Then, as shown in FIG.
When clamping and gripping the boring rod 1, first, while supplying the pressure oil to the flow path 42 and releasing the pressure oil of the flow path 42, the sliding body 21 moves to the left end, and the clamp piece 13 causes the boring rod 1 to move. Is regulated around the axis. Next, when pressure oil is supplied to the flow path 43 and the pressure oil in the flow path 44 is released, the piston 24 moves in the axial direction of the boring rod 1, the clamp piece 14 is pressed against the boring rod 1, and the clamp pieces 13, 14 are pressed. This achieves gripping and centering of the boring rod 1.

Further, when removing the boring rod 1, the entire case 11 on one side is rotated counterclockwise around the pin 30 as a fulcrum to open the boring rod 1 to the front of the boring machine (upward in FIG. 4). be able to.

[0006]

However, in the conventional clamp device, when the sliding body 21 is at the left end,
Since the center of the boring rod 1 can be clamped at the center, when the sliding body 21 is stopped at the left end due to the size of the diameter of the boring rod 1, the clamping piece 13 holds the boring rod 1 at the center. It is necessary to adjust the length of the clamp piece 13 so that it can be done.
Therefore, the clamp piece has to be replaced depending on the diameter of the boring rod 1, and when the sliding body 21 is at the left end, the center of the boring rod 1 can come out. If 13 wears or slips, there is an inconvenience such as a misalignment (misalignment) and a decrease in holding force. Further, the conventional clamp device requires separate actuators, so that the structure is complicated, the manufacturing process is troublesome, and the cost is high. In addition, the conventional clamping device has the first and second clamp pieces 13, 14
Are individually slid and centered, and the first clamp piece 13 has a clamp piece 13 so as to hold the boring rod 1 at the center when the slide body 21 is stopped at the left end. Since it is necessary to adjust the length, it is troublesome and troublesome to grasp the double-tube boring rod and remove the connecting screws for the inner and outer pipes separately with a rod breaker.

The present invention has been made in order to solve the above problems, and provides a rod clamp device having a simple structure and capable of gripping boring rods having different diameters without replacing the clamp pieces. Is.

[0008]

SUMMARY OF THE INVENTION The present invention is directed to a head side case to which a head side clamp piece is attached, a piston side clamp piece arranged on the side facing the head side clamp piece, and the clamp side clamp. A drive cylinder with a piece attached to the tip of the piston rod, and base ends attached to both sides of the drive cylinder,
A pair of connecting tools whose tips are pivotally attached to the head-side case and tightened by means of a tightening tool, and rods formed in the middle of the connecting tools near both ends of a support are slidably inserted. The piston side clamp piece is slidably mounted in the center, and a pair of brackets to be fixedly mounted on the drilling machine are fixed to both sides of the support base, and are erected on the support base and the bracket, and the upper half. And a fixed body having an openable and closable guide cover, and the head-side case is formed so as to be openable and closable around a pivot of the connector.

[0009]

Operation: The fixed body does not move because it is fixed to the drilling machine, but the piston side clamp piece is on the piston side, the head side clamp piece is on the drive cylinder via the connecting tool,
Each of them is attached and the connector is slidably inserted into the fixed body, so when the drive cylinder operates,
When the piston side clamp piece moves in the boring rod direction and abuts on one side of the boring rod, the head side clamp piece moves to the boring rod side by the reaction and grips the boring rod from both sides.

Since the boring rod in the gripped state is slidable with respect to the fixed body via the rod in the middle of the connecting tool, the core of the rod is exposed.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a front view of an embodiment of the present invention cut at a right angle to the axial direction, FIG. 2 is a partial right side view cut parallel to the axial direction of an embodiment of the present invention, and FIG. It is a partial left side view cut parallel to an axial direction showing one example. In the figure, 100 is a head side case to which a head side clamp piece 110 is attached, 220 is a piston side clamp piece provided at a position facing the head side clamp piece 110, and is attached to the tip of a piston rod 210 with a bolt 120. ing.

A drive cylinder 200 drives the piston side clamp piece 220 back and forth. 310, 3
20 is a pair of connecting tools, each of which has a bolt 33 at the proximal end.
0 and 330 are attached to both sides of the cylinder 200. The tip of one connecting tool 310 is pivotally attached to one end of the head side case 100 via a pin 340.
The tip of the other connecting tool 320 fastens the other end of the head side case 100 via a fastening tool 350. With the fastener 350, when the upper half 510 of the guide cover is opened, the cap nut 351 is loosened, and the pin 360 is tilted in the direction of the arrow, so that the upper half 5 of the guide cover is closed.
10 is designed to open upward.

The fixed body 400 includes a support base 410, a pair of brackets 420 and 430, and a guide cover 500 whose upper half is opened and closed. Then, rods 311 and 321 formed in the middle of the connecting members 310 and 320 are slidably inserted near both ends of the support base 410, respectively.
The piston side clamp piece 220 is slidably mounted in the center. A pair of brackets 420 and 430 are fixed to both sides of the support base 410.

The brackets 420 and 430 and the support base 4
An openable and closable guide cover 500 that covers the head-side case 100 and the support base 410 is attached to 10, and the upper half of the guide cover 500 is tightened via a tightening tool 520.
By loosening 1 and tilting it in the direction of the arrow, the upper half 510 of the guide cover is opened around the pin 530. Reference numeral 130 is a handle for opening the head side case 100, and 511 is a handle for opening the upper half of the guide cover.

The operation of the present invention will be described. First, a boring rod (not shown) is inserted. The method is to insert the boring rod in the vertical direction into the rod clamp device in the state shown in FIG. 1 or loosen the cap nuts 521 and 351 to make the upper half 510 of the guide cover and the head side case 1
Open 00 and insert the bowling rod from the front. At this time, the piston rod 210 of the drive cylinder 200 is in the most contracted position.

Next, when the valve for pressure oil to the drive cylinder 200 is switched and the piston rod 210 is extended, the piston side clamp piece 220 abuts on one side of a boring rod (not shown).
0 moves in the direction of the arrow, and the head-side case 100 connected to the connectors 310 and 320 moves toward the center of the boring rod, so that the head-side clamp piece 110 moves to the other side of the boring rod and the boring rod moves. To be gripped.

Since the brackets 420 and 430 are fixedly mounted on a boring machine (not shown), the head side clamp piece 1
The boring rod (not shown) gripped between the piston 10 and the piston side clamp piece 220 is a connector 310, 320.
Rods 311 and 321 of the bush 41 of the support base 410.
Since it can move freely while sliding with 1, 411, the core of the boring rod is out.

[0018]

According to the present invention described above, the piston side clamp piece and the head side clamp piece respectively grip the boring rod by the pushing force and the reaction force thereof, and the direction perpendicular to the boring rod with respect to the boring machine. Since it can be freely slid, the core can be accurately centered while gripping the boring rod, and pipes with different diameters can be centered and gripped without exchanging clamp pieces. Since the opposing clamp pieces are not slid by separate actuators as in the above, the structure is simple, the manufacturing is easy and the cost can be provided at low cost, etc. Play.

[Brief description of drawings]

FIG. 1 is a front view taken along a plane perpendicular to the axial direction, showing an embodiment of the present invention.

FIG. 2 is a partial right side view taken along a line parallel to the axial direction, showing an embodiment of the present invention.

FIG. 3 is a partial left side view of the embodiment of the present invention cut in parallel with the axial direction.

FIG. 4 is a cross-sectional view of a conventional rod clamp device.

FIG. 5 is a vertical cross-sectional view of a conventional rod clamp device.

[Explanation of symbols]

 100 head side case 110 head side clamp piece 200 drive cylinder 210 piston rod 220 piston side clamp piece 310, 320 coupling tools 311, 321 rod 340, 360 pin 350 tightening tool 351 cap nut 400 fixed body 410 support base 411 bush 420, 430 Bracket 500 Guide cover 510 Upper half of guide cover 520 Tightening tool 521 Cap nut 530 pin

Claims (1)

[Claims] 1. A head side case to which a head side clamp piece is attached, a piston side clamp piece disposed on a side facing the head side clamp piece, and the piston side clamp piece is attached to a tip of a piston rod. A drive cylinder and base ends attached to both sides of the drive cylinder,
A pair of connecting tools whose tips are pivotally attached to both ends of the head-side case and tightened via tightening tools, and rods formed in the middle of the connecting tools near both ends of the support are slidably inserted. The piston side clamp piece is slidably mounted in the center, a pair of brackets to be fixedly mounted on the drilling machine are fixed to both sides of the support base, and are erected on the support base and the bracket, and A rod clamp device comprising a fixed body having an openable and closable guide cover in an upper half thereof, wherein the head-side case is formed so as to be openable and closable around a pivot of the connector.