JP2973094B2 - Perforator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to drilling such as bolt holes in a steel material such as a steel sheet pile (U-shaped sheet pile) or a grooved steel (channel) in a narrow place in civil engineering work such as joint laying work. And a punching device for performing

[0002]

2. Description of the Related Art In civil engineering work for constructing underground structures, tools such as drills and the like for fixing these steel materials to each other with rivets, bolts and the like are formed on steel materials constructed in excavated trenches. It is necessary to perform a drilling operation. In particular, in the joint laying work, a grooved steel (channel) is laid horizontally on both outer sides of a steel sheet pile (U-shaped sheet pile) that is connected and vertically driven into the trench and fixed to the abutting part of both Many bolt through holes must be drilled.

FIGS. 5 to 7 show an example of steel construction in the above-mentioned joint groove laying work. FIG. 5 is a plan view, FIG. 6 is a front view, and FIG. A-A view)
FIG. P1, P2, and P3 are perpendicular to the trench bottom L,
A U-shaped steel sheet pile that is continuously driven to form a continuous uneven sheet pile wall.
1, C2 is suspended. Groove steel C1, C
In order to attach and fix the steel sheet piles 2 to the steel sheet piles P1, P2, and P3 by bolting, a plurality of bolt insertion holes H, H,. In the case of ordinary joint groove construction, the holes H, H,... Are drilled at four locations arranged in a substantially square shape per one contact portion between the steel sheet pile and the grooved steel as shown in FIG.

[0004] In such underground construction work, drilling work of steel material is easy if a sufficient work space is provided around the constructed steel material and drilling is performed from the outside of the horizontal member (groove shaped steel). However, in order to do so, extra excavation must be performed before and after the steel structure and then backfilled, which requires a great number of earthworks. For this reason, it is desirable to drill a hole from the inner space S of the steel material (steel sheet pile) constructed as described above. Drilling was extremely difficult. Naturally, it is conceivable to pre-drill at the predetermined position in the design of each steel material to be used, but this is different from the construction work on the ground, etc. It is not practical because matching is almost impossible.

[0005]

SUMMARY OF THE INVENTION In view of the above-mentioned problems of steel drilling work in the conventional underground civil engineering work, the present invention relates to an underground civil engineering work such as laying a joint ditch and the like in a narrow work site. An object of the present invention is to provide a drilling device that can accurately, quickly, and easily perform a drilling operation on a steel material.

[0006]

In order to achieve the above object, a drilling device according to the present invention rotatably holds a plurality of drills arranged corresponding to required positions for drilling a steel material, and A case incorporating a transmission means for simultaneously rotating and driving a plurality of drills; and a means for moving the case back and forth in the axial direction of the drill, wherein the case and the case are disposed in a space formed by a steel material to be drilled. A frame to be obtained, a detachable device for detachably fixing the frame disposed in the space to the steel material, a frame body having wheels that can roll on the surface of the steel material, and a vertically suspended suspension supported in the frame body. And a motor for suspending the frame below the base and transmitting a driving force to a drill driving transmission means in the case.

[0007] Further, the attaching / detaching device can be attached and fixed to the frame, and can be attached to a steel material to regulate a relative position with respect to the steel material. A vertical shaft supported by a vertical bearing, a horizontal shaft fixed to a lower end portion of the vertical shaft, and a roller attached to a tip end of the vertical shaft so as to be in contact with a steel material wall and roll; A stop pin protruding from an outer peripheral portion of a collar fixed to an intermediate portion of the main body, and abutting against a wall surface of the detachable device main body to suppress rotation of the vertical shaft.

[0008]

Embodiments of the present invention will be described below with reference to the drawings based on examples. This example is
The present invention is applied to a U-shaped steel sheet pile (sheet pile) and a grooved steel (channel) in a joint groove laying work.

FIG. 1 is a front view showing an embodiment of a drilling device according to the present invention. In the drawing, P1 and P2 shown by chain lines are U-shaped steel sheet piles driven into a trench, and C1 and C2 are steel plates. This is a grooved steel horizontally suspended on both outer sides of the sheet pile, and shows a state in which bolt holes H, H... (See FIG. 7) are drilled in the steel sheet pile P2 and the grooved steel C1. 2 is a side view (left side view of FIG. 1) of the embodiment, FIG. 3 is a plan view of a main part (viewed along BB in FIG. 1), and FIG. 4 is a side view of the main part (viewed along DD of FIG. 1). It is.

In the figures, 1, 1,... Are steel materials (steel sheet piles,
4 drills perforating a channel
In addition, it is rotatably held corresponding to a required position for drilling a steel material (arranged in a substantially square shape as shown in FIG. 2 in this embodiment). On the outside of the center of the case 2, a screw cylinder 3 having an external thread is protruded.

Reference numeral 4 denotes a frame fixed to the steel material at the time of drilling work. The screw cylinder 3 protruding from the case 2 is loosely fitted into the central circular hole 5 so that it cannot move in the frame 4 in the axial direction. The internal screw of the center hole of the gear 6 supported by the screw is screwed with the external screw of the screw cylinder 3 fitted in the frame 4. A pinion 9 is meshed with the gear 6, and the ratchet lever 7 is manually operated to rotate the gear 6 through the shaft 8 and the pinion 9. The case 2 holding 1,... Moves forward and backward with respect to the frame 4 in the axial direction of the screw cylinder 3 (the left-right direction in FIG. 1). Bearing cylinders 10, 1 supporting a single shaft of a drill at four places on the back surface of case 2
Are provided so as to protrude in the direction of the frame 4, and the bearing sleeves 10, 10... Loosely fit into the circular holes 11, 11. The rotation of the case 2 is prevented, and at the same time, it also serves as a guide bar when the case 2 moves forward and backward.

Reference numeral 12 denotes a motor for rotating the drills 1, 1,..., A pulley 13 of a motor shaft, a V-belt 14, and a pulley 1 supported by a base of the motor 12.
5. The rotation is transmitted to the sprocket 18 via the coaxial sprocket 16 and the chain 17. The spline of one part of the shaft 19 is fitted to the spline boss of the sprocket 18 so as to be movable in the axial direction (the shaft 19 moves when the case 2 moves forward and backward), and the other part of the shaft 19 (the left side in FIG. The rotation of the sprocket 18 is transmitted to the sprocket 20 via a spline, which is fixed to a sprocket 20 which is mounted on the upper part by a key and a screw (not shown).
Spindle 2 for fitting drills 1, 1,.
L, 21 ... are mounted on four shafts, and spindle 2
, 1,... Are supported by the bearing sleeves 10, 10,..., And sprockets 22, 22,. With the sprockets 22, 22, ... and the chain 23 extended on the sprocket 20,
The rotation is transmitted to the spindles 21, 21,..., The drills 1, 1,. Reference numeral 24 denotes a bellows tube for protecting the spline shaft 19. The sprocket 16, the chain 17, and the sprocket 18 are housed in a box 25 that is pivotally mounted on the base of the motor 12, and the lower end of the box 25 is fixed to the top of the frame 4. The motor 12 is suspended from a frame 27 by a rope 26, and is raised and lowered by manual rotation of a handle 30 via a winding tube 28 and pulleys 29, 29 provided on the frame 27. At the four corners of the legs of the frame 27, wheels 31, 31,... That can roll on the upper surfaces of the steel materials (grooves) C1, C2 are attached. 32, 32
Is a stopper for preventing the wheels 31, 31 .. from coming off the steel surface.

Reference numeral 33 denotes an attaching / detaching device whose main body 34 is formed in a substantially U-shape and which is attached over a steel material (groove-shaped steel) C2. The main body 34 is fastened to the frame 4 by screws 35, 35,. Be worn. A vertical shaft 38, which is manually rotated by a lever 37, is supported by vertical bearings 36, 36 provided at a front portion of the attaching / detaching device main body 34, and a horizontal shaft 39 is provided at a lower end of the vertical shaft 38. Installed. The distal end of the horizontal shaft 39 is a female screw hole, and is screwed to a male screw shaft protruding from the base of a roller receiver 41 that supports a roller 40 that can contact and roll on the inner wall surface of the steel material C2. I have. A lock nut 42 is screwed onto the male screw shaft, and the length between the vertical shaft 38 and the roller 40 is changed by rotating the roller receiver 41 around the male screw shaft to change the steel material C2 of the roller 40. Is adjusted, and the lock nut 42 is tightened and fixed. If the lever 37 is rotated rightward as shown by the arrow in FIG. 3, the horizontal axis 39 is turned leftward and disengages from the steel material C2, so that the attaching / detaching device main body 34 can be inserted into and detached from the steel material C2.

The intermediate portion of the vertical shaft 38 (the lower vertical bearing 36
A collar 43 is fixed to the upper portion of the collar 43, and a stop pin 44 projecting in the horizontal direction is fixed to the outer peripheral surface of the collar 43. The attachment / detachment device 33 is inserted into the steel material C2 and the lever 37 is operated to bring the roller 40 into contact with the inner wall surface of the steel material C2, and at a position where the horizontal axis 39 slightly passes in a direction perpendicular to the inner wall surface of the steel material C2. The stop pin 44 abuts against a wall surface 45 at the front part of the detachable device main body 34, and suppresses the rotation of the vertical shaft 38 to stabilize the horizontal shaft 39 and the rollers 40.

When drilling a steel material using the drilling device of the present invention configured as described above, the motor 12
, And the body of the drilling apparatus (the assembly of the case 2 and the frame 4) is raised higher than the wheels 31 (in this case, the case 2 holding the drills 1, 1.
) Are put on the flanges of the steel materials (grooves) C1, C2, and the steel materials C1, P
2 is moved to substantially above the required hole. Next, the motor 12 is wound down so that the attaching / detaching device main body 34 is straddled on the steel material C2 on the non-perforated side, and at the same time, the case 2 and the frame 4 are connected to the space S between the steel materials (steel sheet piles) P1 and P2 (see FIG. 5). ), And by operating the lever 37 of the attachment / detachment device 33 as described above, the roller 40 is pressed against the inner wall surface of the steel material C2, and the drill 1, 1,.
Is turned to the drilling position of the steel material (steel sheet pile) P2, the motor 12 is turned on, the drills 1, 1... Are rotated, and the case 2 is gradually advanced by operating the ratchet lever 7 to thereby make the drill 1 1. Drill steel materials P2 and C1. By inserting and removing the attachment / detachment device main body 34 attached to the frame 4 to the steel material C2 and pressing the roller 40, the vertical positions of the drills 1, 1,. At times, the body of the punching device is prevented from becoming unstable. Adjustment of the drill 1, 1,... Left and right positions is visually confirmed, and the wheels 31, 31.
It can be easily performed by utilizing the fine rolling of 0. When drilling is completed, the motor 12 is stopped, the case 2 is retracted, the drills 1, 1,... Are pulled out, the crimping of the rollers 40 is released, and the entire device is rolled up to the initial state and the wheels 3 are removed.
Rolling 1, 31, ... to move to the next hole,
Repeat the above operation. In the case where a hole is made in the opposite portion of the steel material (the contact portion between the steel sheet pile P1 or P3 and the grooved steel C2 in FIG. 5), the entire device is turned in the above-mentioned rolled state and turned in the opposite direction. You just need to do the operation.

[0016]

As described in detail above, the drilling device according to the present invention is a compact and easy-to-move apparatus body which rotatably holds a plurality of drills corresponding to required positions for drilling steel materials. It is designed to be drilled by stably fixing it to steel with an attachment / detachment device, making it extremely efficient to drill many steel materials in narrow places in underground civil engineering works such as laying joint grooves. Can be carried out well and safely accurately.

[Brief description of the drawings]

FIG. 1 is a front view of a punching device.

FIG. 2 is a side view of the punching device.

FIG. 3 is a plan view of a main part of the punching device.

FIG. 4 is a side view of a main part of the punching device.

FIG. 5 is a plan view showing an example of a steel material drilled by a drilling device.

FIG. 6 is a front view showing an example of a steel material drilled by a drilling device.

FIG. 7 is a side sectional view showing an example of a steel material drilled by a drilling device.

[Explanation of symbols]

 Reference Signs List 1 drill 2 case 3 screw cylinder 4 frame 5 circular hole 6 gear 7 ratchet lever 8 shaft 9 pinion 10 bearing cylinder 11 circular hole 12 prime mover (motor) 13, 15 pulley 14 V belt 16, 18 sprocket 17 chain 19 shaft 20 sprocket 21 Spindle 22 Sprocket 23 Chain 25 Box 27 Frame 31 Wheel 33 Detachable device 34 Detachable device main body 35 Screw 36 Vertical bearing 37 Lever 38 Vertical shaft 39 Horizontal axis 40 Roller 43 Color 44 Stop pin 45 Wall surface C1, C2, P1, P2 , P3 steel

Claims (1)

(57) [Claims] 1. A transverse steel material, such as a channel steel, which is temporarily attached to both outer sides of a sheet pile that is vertically driven in connection with the ground, and a hole for a permanent mounting bolt is formed inside the sheet pile together with the sheet pile. A drilling device for drilling from a steel plate, wherein a case is provided with transmission means for rotatably holding a plurality of drills and simultaneously rotating and driving the plurality of drills, corresponding to a required position for drilling steel material; and A screw cylinder protruding from the center of the back of the screwdriver, a plurality of bearing cylinders for supporting the plurality of drill shafts protruding around the screw cylinder in parallel with the screw cylinder; A frame provided with a circular hole for loosely supporting the plurality of bearing cylinders so as to be simultaneously movable in the axial direction, a gear supported in the frame so as not to be movable in the axial direction, and screwed to the screw cylinder; A pinion that meshes with the gear and this pinion A ratchet that is rotatably supported by the frame and is transmitted to the frame, and a lever that is fixed to the back of the frame and straddles the non-perforated side transverse steel material and adheres to the steel material, And a punching device main body comprising a shaft mounted on a vertical axis with a stop pin for preventing excessive rotation of the lever, and a mounting / dismounting device having a horizontal axis with a roller at the tip end provided below the vertical axis. Is pierced by a lifting device in a frame provided with wheels that can roll on the horizontal steel material.