JPH06173572A - Device for boring hole in intersection of shape steels disposed at right angle - Google Patents

Abstract

PURPOSE:To bore a plurality of holes for insertion of bolts at an intersection between an H-section steel and a channel steel by positioning a machine frame horizontally to a channel steel to fix it thereto and actuating a multispindle drilling machine, while holding the axis of the machine perpendicular to the flange surface of the H- section steel. CONSTITUTION:A machine frame 4 is positioned with respect to a channel steel 2 by means of a horizontally positioning member 5, following which a pump 41 for operation of a clamp device and a pump 42 for moving a multispindle drilling machine are actuated, and piston rods 22 of upper and lower hydraulic cylinders 21 are retracted to close a clamp arm 20 and a flange 1a on the side of the steel 2 is clamped at upper and lower points thereof. Next, the axis of a drilling machine 8 is held perpendicular to the flange surface 1a of the H-section steel 1 and six drills 30 are set at predetermined positions. And when a main spindle drive motor 31 is operated to move a valve actuation lever 44 to an advancing position, a sliding body 36 together with the machine 8 are advanced so that six holes are bored at a time at an intersection 3 between the H-section steel 1 and channel steel 2 in the range of from a web 2c to the flange 1a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an orthogonal steel cross hole punching device used for civil engineering work, for example, the first vertical hole excavating work when constructing an underground passage.

[0002]

2. Description of the Related Art A large number of H-shaped steels during the above construction
Drive (1) vertically into the soil so that it becomes parallel, and first place one channel steel (2) on the ground so that it is perpendicular to the H-section steel (1) and be horizontal. After tightening them, bolt them together, then dig below the channel steel (2) and then support both ends of the channel steel (2) horizontally on a frame (not shown). The H-shaped steel (1) is bolted to the H-shaped steel (1) sequentially downward (see Fig. 5).

[0003]

When tightening the above-mentioned bolts, the intersections (3) of the H-section steel (1) and the channel steel (2) are usually used.
There are 6 bolt insertion holes (50) in the hole. This drilling work is conventionally performed manually using a single-axis electric drill. However, due to poor scaffolding, injuries due to cutting debris often occur, and of course work efficiency is poor. Furthermore, not all flanges (1a) of all H-section steels (1) are aligned on the same vertical plane, but either one is tilted or deviated from this vertical plane by a certain angle. In such a case, the channel steel (2) at the intersection (3) is replaced by the H-section steel (1).
Since it is not in close contact with the channel steel at both sides of the intersection (3)
By cutting the upper and lower flanges (2a) and (2b) of (2) and tightening the bolts strongly, the flange steel (1a) of the H-section steel (1) is grooved steel.
The web (2c) of (2) is brought into close contact, and then the cut parts are connected by welding, but it is tightened so as to eliminate the gap existing between the H-section steel (1) and the channel steel (2). Requires a strong force.

An object of the present invention is to provide an orthogonal steel crossing piercing device capable of safely and simply and efficiently performing a drilling work in civil engineering work.

[0005]

SUMMARY OF THE INVENTION An orthogonal steel crossing piercing device according to the present invention comprises a horizontal positioning member for a movable machine frame with respect to a channel steel vertically arranged in a vertical H steel, and an H steel horizontal positioning member. A clamp device for tightening one flange from the left and right sides at two places at the top and bottom, a pressing device for pressing the channel steel against the H-section steel, and a multi-axis drilling machine that moves back and forth on the machine frame fixed to the H-section steel. It is equipped.

[0006]

According to the present invention, there is provided a cross section drilling apparatus for cross section steel having a horizontal positioning member for a movable machine frame with respect to a groove section steel which is arranged orthogonally to a vertical H section steel, and one flange of the H section steel for vertically arranging. Since it is equipped with a clamp device for tightening from both left and right sides at a location, a pressing device for pressing the channel steel against the H-shaped steel, and a multi-axis perforator that moves back and forth on the machine frame fixed to the H-shaped steel, The machine frame can be kept horizontal by carrying the boring device to the intersection of the H-shaped steel and the grooved steel to be perforated by a crane or a bulltozer and bringing the horizontal positioning member into contact with the grooved steel. Next, when the machine frame is fixed to the H-section steel by operating the clamp device that tightens one flange of the H-section steel at the upper and lower positions, the axis of the drilling machine is kept perpendicular to the flange surface of the H-section steel. be able to. Next, when the pressing device for pressing the channel steel to the H-shaped steel is operated,
The web surface of the channel steel can be brought into close contact with the flange surface of the H-section steel. Finally, when the multi-spindle drilling machine is operated and the multi-spindle drilling machine on the machine frame is advanced, it is possible to open a plurality of bolt insertion holes at the intersection of the H-section steel and the channel steel.

[0007]

Embodiments of the present invention will be described with reference to the drawings.

The cross-section steel cross-drilling device shown in FIGS. 1 to 3 has a movable machine frame (4) for a channel steel (2) arranged orthogonally to a vertical H-section steel (1). Horizontal positioning member
(5) and a clamp device (6) for tightening one flange (1a) of the H-section steel (1) from the left and right sides at the two upper and lower locations,
A pressing device (7) for pressing the channel steel (2) against the H-shaped steel (1);
It is provided with a multi-spindle drilling machine (8) that moves back and forth on a machine frame (4) fixed to a shaped steel (1).

The machine frame (4) includes a bottom plate (9), a pair of square columns (10) standing on the left and right sides of the bottom plate (9), and both columns (10).
Beams (11) fixed to the inner surface of the upper end of the
And the top plate (12) fixed to the upper end of the beam (11) so that the bottom plate (9) and the front ends are aligned rearward, and the upper rear surface of both columns (10) and the lower surface of the top plate (12). The upper reinforcing plate that is fixed to the bottom and the lower side has an upward slope toward the rear.
(13), a lower reinforcing plate (14) fixed to the lower rear surface of both columns (10) and the upper surface of the bottom plate (9), and the upper side of which is a downward slope toward the rear, and the top plate (12). It comprises a rising part (15) provided on the left and right of the front and rear ends and having a hole for connecting a crane hanging rope.

The horizontal positioning member (5) of the machine frame (4) is
An arm-shaped member extending forward from (4), and a base (5a) fixed to the outer surface slightly above the center of the height of both columns (10).
And a middle part (5c) between the base part (5a) and the tip part (5b) and the tip part (5b) to be brought into contact with the upper flange (2a) of the channel steel (2). ) And the lower surface of the tip portion (5c) are both horizontal, but the thickness of the base portion (5a) is thicker than that of the tip portion (5b), so the lower surface of the middle portion (5c) has a downward slope from the front to the back. There is.

A vertical mounting plate (16) is provided inward of both columns (10) in parallel with them and hanging from the beam (11).
Two rectangular horizontal support pieces (17) at a predetermined distance from each other at the upper and lower parts between each column (10) and each vertical mounting plate (16).
Are arranged and fixed to the column (10) and the mounting plate (16). In addition, at the center position of the former height between each column (10) and each vertical mounting plate (16), the rectangular vertical support pieces (18) are fastened to the front and rear of both, and the front and rear vertical support pieces are also provided.
Rectangular horizontal reinforcing pieces (19) are fixed to the upper and lower ends of (18).

There are a pair of upper and lower clamp devices (6), and each clamp device (6) includes a pair of left and right clamp arms (20) having an L-shape when viewed from above and both clamp arms (20).
And a fluid pressure cylinder (21) for opening and closing. The base portion of the arm body (20a) extending in the front-rear direction is provided with two horizontal support pieces provided at intervals so that the arm (20) can swing.
It is inserted between (17) and is pivotally attached to both horizontal support pieces (17). The flat protrusion on the cylinder end of the fluid pressure cylinder (21) is pivotally attached to the U-shaped mounting bracket (49) when viewed from the side fixed to one side of one arm body (20a), and the piston rod (22) The flat protrusion at the end of is attached to a mounting bracket (49) similar to the above. Behind one side of the bent part (20b) bent at a right angle inward from the arm body (20a), a cross section opened at a predetermined angle with the rear side of the bent part (20b) via the block (23). A guide member (24) having a surface L shape is fixed. The predetermined angle means that as the pair of clamp arms (20) are closed, the guide member (24) is the flange (1a) of the H-shaped steel (1).
It is an angle that touches the edge of the machine frame and allows the machine frame (4) to be guided and adjusted so as to come to an accurate position with respect to the flange (1a) surface. Mounting bracket
Rectangular reinforcing plates (25) are fastened to the (49) and the block (23). The clamp arm (20) is located on the lower side of the upper clamp device (6) and is located on the upper side of the lower clamp device (6).

The pressing device (7) is composed of a pair of forward-facing fluid pressure cylinders (26) arranged on the left and right of the center of the machine frame (4), and the cylinder part is horizontal to the front and rear vertical pieces (18). The piston rod (27) is fitted with a bottomed cylindrical head (28).

The multi-axis drilling machine (8) has a multi-axis head (29) at the front end.
It is equipped with 6 drills (30) and the spindle rotation motor (31) is at the rear end.
Is equipped with. On the bottom plate (9), a hollow guide stand (33), in which a forward-facing horizontal fluid pressure cylinder (32) is fixed and built in at the rear end, is attached. Multi Axis Perforator (8)
The body portion (34) is mounted on and connected to the sliding body (36) which straddles the guide portion (35) above the guide base (33). The guide part (35) extends in the front-rear direction. On the lower surface of the front end of the sliding body (36), through a long hole (not shown) extending in the front-rear direction provided in the upper wall of the hollow guide stand (33), the fluid pressure cylinder (3
A leg (38) connected to the piston rod (37) of 2) is provided. The front wall (39) of the hollow guide base (33) is provided with a stopper (40) that can be adjusted in the front-rear direction so as to project inward.

On the top plate (12), a pump (41) for operating the clamp device, a pump (42) for moving the multi-spindle punch, and a control panel (43).
And a valve operating lever (44) of the fluid pressure cylinder (32) for moving the multi-spindle drilling machine is arranged on the top plate (12) at the side of the control panel (43). On the control panel (43) surface, the first valve operating lever (45) and the second valve operating lever (45) of the fluid pressure cylinder (21) of the clamp device (6) are provided.
(46) and the valve operating lever (47) of the fluid pressure cylinder (26) in the pressing device (7) are attached. Hydraulic pressure is used for the fluid pressure cylinders (21), (26) and (32).

In FIG. 5, the grooved steel (2) at the uppermost stage is arranged orthogonally to a large number of H-shaped steels (1) which are vertically erected in parallel, and both are already bolts and nuts (48). Clamped, the second stage channel steel (2) was placed orthogonally, and there were 6 holes (50) at each intersection (3) between the H-section steel (1) and the channel steel (2). ) Is opened.

The operation of the punching device to open the hole (50) will be described below.

The machine frame (4) is suspended by a crane (not shown), and the punching device is carried to the intersection (3) where the holes (50) of the H-section steel (1) and the channel steel (2) are to be opened, The horizontal positioning member (5) positions the machine frame (4) against the channel steel (2) so that it does not tilt left or right. That is, the tips (5b) of the pair of left and right arm-shaped horizontal positioning members (5) are connected to the upper flange (2) of the channel steel (2).
Place it on a). Clamping device (6)
The pair of left and right clamp arms (20) are kept open as shown in FIG.

Next, the pump (41) for operating the clamp device and the pump (42) for moving the multi-spindle punch are operated, and the first valve operating lever (45) of the fluid pressure cylinder (21) in the clamp device (6) is operated. And move the second valve operating lever (46) to the tightening position to move the pistons of the upper and lower fluid pressure cylinders (21).
Withdraw the rod (22). Then, the pair of left and right clamp arms (20) at the top and bottom are closed, and the channel steel of H-section steel (1) is
Tighten the flange (1a) on the (2) side from the left and right sides at the two upper and lower positions, and set the shaft center of the punch (8) to the flange of the H-section steel (1).
Hold perpendicular to the (1a) plane and hold six drills (30) in place.

After tightening, the second valve operating lever
Move (46) to fluid cylinder stop position and keep piston rod (22) in retracted position. Next, the valve operating lever (47) of the fluid pressure cylinder (26) of the pressing device (7) is moved to the pressing position. Then, the piston rods (27) of the pair of left and right fluid pressure cylinders (26) move forward, and the head (28) at the tip of the pistons (27) moves the web (2c) of the channel steel (2) at two locations to form the H-shaped steel (1 ) Press on the flange (1a) surface. At this time, the second valve operating lever
Move (46) to the operating position again and secure the tightening.

Therefore, finally, the main shaft rotating motor (31) of the multi-spindle drilling machine (8) is operated to move the valve operating lever (44) of the fluid pressure cylinder (32) for moving the multi-spindle drilling machine to the forward position. . Then, the piston rod (37) of the fluid pressure cylinder (32) is pushed out, and the sliding body (36) connected to this is pushed out by the multi-spindle punch.
Move forward together with (8), and at the intersection (3) of H-section steel (1) and channel steel (2), from the latter web (2c) to the former one flange (1a) at once. Drill 6 holes (50).
The movement of the multi-spindle punch (8) to the channel steel (2) is fast,
The movement during drilling is slowed down.

When the boring is completed, the valve operating lever (44) of the fluid pressure cylinder (32) for moving the multi-spindle punch is moved to the retracted position. Then, the piston rod of the fluid pressure cylinder (32)
(37) retreats and the multi-spindle punch (8) retracts to its original position. Next, the spindle rotation motor (31) is stopped. Then, the first valve operating lever (45) and the second valve operating lever (4) of the fluid pressure cylinder (21) in the clamp device (6) are
Move 6) to the open position and move the valve operating lever (47) of the fluid pressure cylinder (26) to the retracted position. Then, the piston rods (22) of the upper and lower fluid pressure cylinders (21) of the clamp device (6) are pushed out, the pair of upper and lower left and right clamp arms (20) are opened, and the fluid in the pressing device (7) is opened. The piston rod (27) of the pressure cylinder (26) retracts and the head (28) retracts. Then, the clamp device actuation pump (41) and the multi-axis punch moving pump (42) are stopped. Then, by operating the crane, the punching device is carried to the intersection (3) of the H-section steel (1) and the channel steel (2) where the next hole should be formed.

[0023]

According to the cross-section steel cross-drilling device according to the present invention, first, the drilling device is carried to the cross-section of the H-shaped steel and the grooved steel to be drilled by a crane or a bulltozer, and the cross-shaped steel is drilled. The machine frame can be kept horizontal by abutting the horizontal positioning member, and then the machine frame is fixed to the H-section steel by operating the clamp device that tightens one flange of the H-section steel at the two upper and lower positions. Then, the axis of the punch can be kept perpendicular to the flange surface of the H-section steel, and when the pressing device that presses the channel steel against the H-section steel is operated, the web surface of the channel steel becomes H-shaped. It can be in close contact with the flange surface of steel, and finally, when a multi-spindle drill is operated to move it forward, it is possible to make multiple bolt insertion holes at the intersection of H-section steel and channel steel at once. This enables safe, easy and efficient drilling in civil engineering Only it is possible to carry out the work.

[Brief description of drawings]

FIG. 1 is a front view of an orthogonal steel crossing punching device showing an embodiment of the present invention.

FIG. 2 is a side view in which a part of the punching device of FIG. 1 is cut away.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a sectional view corresponding to FIG. 3, showing a state in which a pair of left and right clamp arms are opened.

FIG. 5 is a perspective view showing a state in which a channel steel is orthogonal to a parallel upright H-section steel.

[Explanation of symbols]

 (1): H-section steel (1a): One flange of H-section steel (2): Channel section steel (4): Mobile machine frame (5): Horizontal positioning device for mobile machine frame (6): Clamping device ( 7): Pressing device (8): Multi-axis punching machine

Claims (1)

[Claims] 1. A horizontal positioning member for a movable machine frame with respect to a channel steel arranged orthogonally to a vertical H-section steel, and a clamp device for tightening one flange of the H-section steel at two upper and lower positions from left and right sides, respectively. An orthogonal steel crossing punching device comprising a pressing device for pressing the channel steel against the H-shaped steel, and a multi-axis drilling machine that moves back and forth on a machine frame fixed to the H-shaped steel.