JPS59185616A - Drilling device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drilling device for drilling a relatively large hole in a hume canal.

For drilling holes for connecting branch pipes to the side wall of humerous canal,
Conventionally, this has been done using an electric drill equipped with a cylindrical bit with a cutting edge on the periphery of the tip, but since the rotational force of an electric drill is relatively small, this method can be used with a diameter of 150 m.
Only a small hole could be drilled. For this reason, drilling holes with a diameter of 250 to 300 mm was carried out by using a tool to enlarge the diameter of the pilot hole drilled with the electric drill, but with this drilling method, the peripheral edge of the hole obtained There was a problem in that the unevenness was severe, and gaps were created at the branch pipe connection parts, and dirt, etc. entered the pipes from these parts and flowed into the sewage treatment tank, reducing its capacity. Furthermore, in the case of a reinforced pipe, the perforation itself is extremely difficult.

The object of the present invention is to provide a drilling device that can easily drill a hole with a relatively large diameter in a hume tube, and a fixing device that can be fixed in contact with the outer surface of a hume tube, etc. A guide cell equipped with a tool at the lower end is held movably in the vertical and lateral directions by a support VF device, and a rock drill is attached to this guide cell so as to be movable back and forth, and the rock drill is moved. It is characterized by being equipped with a drive device. Hereinafter, embodiments shown in the drawings will be described.

FIG. 1 is an external view of an example of a punching device according to the invention, and each of the following figures is an enlarged view of the main parts. The truck 3Vc having the traveling device 2 of this drilling device 1 has a boom 4
is provided so as to be freely rotatable up and down. Since the upper part of the vehicle body including the cabin 3a and the boom pivot portion 3b of the truck 3 is provided so as to be pivotable in a horizontal plane with respect to the traveling device 2, the boom 4 can also be pivoted laterally. 5 is a hydraulic cylinder for rotating the boom 4 up and down.

An arm 7 is pivotally attached to the tip of the boom 4, and the pivot point (
The rear end portion 7a protruding upward from P) and the upper middle portion of the boom 4 are connected by a hydraulic cylinder 8. By extending and contracting this hydraulic cylinder 8, the arm 7 can be freely rotated with respect to the boom 4.

The tip of arm 7! c [The bracket 9 is located at a pivot point Q, and the first link 10 is pivoted at a position in front of this pivot point Q. At the pivot point QJ of the bracket 9, a second link 11 is located at a pivot point M(R), and the first link 10, the second link 11,
And the piston rond tips of the hydraulic cylinder 12 whose rear end is attached to the arm 7 are pivoted to each other at one point.
(S) It's slow.

When the hydraulic cylinder 12 is expanded or contracted, the bracket 9 rotates in the direction of arrow X about the pivot point Qk.

The bracket 9 is provided with an upper connecting plate 14 that projects laterally and a lower connecting plate 15 that projects downward.
The side connecting piece 17 of the support plate 16 extends from the pivot point M (T), and the arm portion 19 of the holding plate 16 is connected to the lower connecting plate 15 via a hydraulic cylinder 20.
A guide cell 22 is fixed to the support plate 16 with bolts, and when the hydraulic cylinder 20 is expanded or contracted, the support plate 16 rotates together with the guide cell 22 in the direction of arrow Y.

As shown in FIG. 4, the guide cell 22 is formed into a groove shape by a substrate 24 and a pair of side plates 25, 25' having a U-shaped cross section, and a feed air cylinder 26 is housed inside the guide cell 22. Inside the opening of the kite cell 22, there is a side plate 25.
, 25', the stop plate 2 inscribed in the projecting edges 25a, 25a'
A carriage 29 disposed outside the guide cell 22 is fixed to the frame 7 by a bolt 30. A sliding plate 31 bolted to the carriage is interposed between the outer surface of the projecting edges 25a, 25a' and the carriage 29.

A cylinder mounting piece 32 is provided at the upper end of the carriage 29 to be inserted into the inside of the kite cell 22.
, an air cylinder 2 whose lower end is fixed to a guide cell 22
The tip of the piston rod No. 6 is attached. Further, a rock breaker 33 is attached to the outer surface of the carriage 29, and when the air cylinder 26 is expanded or contracted, the rock breaker 33 moves up and down along the guide cell. . That is, in the non-embodiments, the air cylinder 26 is used as the drive device for feeding the rock drill 33, but an appropriate device such as a hydraulic cylinder may also be used as the drive device. It is sufficient for the movement stroke of the drilling rock 33 to be about 25 m, but it may be more than 25 m.

A shank rod 35 is attached to the tip of the Iwatsuki 8 g, and a sleeve 36 is screwed to the tip threaded portion 35a. As shown in FIG. 6, the tip of the sleeve 36 is fitted with a cylindrical ring bit 89 having a cutting edge 37 on its periphery, and a center drill 4o is screwed into the inner thread of the ring bit 89. . As a lock bit for drilling, it is preferable to use a ring bit 39 like the illustrated example.

A vcid fixing device 41 is provided at the lower end of the guide cell 22.
't. Fixture 41trJ, back plate 42 and side plate 43
．． 43' n1 side plate formed in a planar shape with 43.43'
A roughly V-shaped notch 44 is provided at the lower end VC. The above cut 44J of the side plate 43, 43': the grooved frame 45 is integrally provided with the grooved frame 45,
A guide plate 47 having a center hole 48 into which a ring bit 39 is loosely fitted is fitted in the center. A bolt 49 is integrally provided at the rear end of the guide plate 47, and when the bolt 49 is inserted through the back plate 42, it is removed.
It is fixed by 50.51trc. Nando's 50
, 51tl'', the front and back position of the guide plate 47 can be adjusted. 52 is a set bolt that reaches inside the groove of the grooved frame 45 from the outside of the side plates 43 and 43'.
The guide plate 47 can be fixed from the side by means of the lock. Note that an upper guide plate 54 is provided above the guide plate '47 as well, reaching from the back plate to the center of the fixture 41. 11 ring bit 39 is fitted to ensure the positioning of the ring bit 39. Like the guide plate 47 and the upper guide plate 54, there is a structure to prevent the ring bit 39 from swinging during work. It is desirable to provide bit support means capable of supporting the bit.
As the focus support means, for example, as shown in FIG.
Something like a guide roll 56 that contacts the outer periphery of the ring bit 39 and rotates around a vertical axis may also be employed.

FIG. 8 is a cross-sectional view of the drilling rock 89, where 60 is the hydraulic motor, 61 is the rotation shaft of the hydraulic motor 60, and 62 is the rotation shaft 6.
1Vc spline fitted drive gear, 63 is an idler gear, 64 is a chuck driver, 65 is a chuck,
66 is a valve, 67 is a piston, and 69 is a blow tube. That is, this drill Iwatsuki is equipped with a striking device operated by compressed air and a rotation device operated by a hydraulic motor, and during work, compressed air is discharged to the tip of the ring bit through the entire blow tube 69 and shank rod 35. Ru. As the drilling rock 33, it is preferable to use one with a small impact force and a large rotational force. For example, the striking force may be comparable to that of a conventional hand hammer, but the rotational force is preferably comparable to that of a large hydraulic drifter.

One example is ``L, -r-7) Dynamic pressure'' Kf/M
The impact force was 5.9 kg-m.

Number of blows: 2700 times/min, maximum rotation -/7.58 to 9.1
, a rotation speed of about 90 rpm was preferable.

When using this drilling device 1, the fixture 41 is pressed and fixed against the outer peripheral surface of the hume pipe 70, and the hydraulic cylinder 26 is contracted while operating the rock drill 33 to apply rotation and impact force to the ring bit 39. As the drilling progresses, the rock drill moves forward along the guide cell 22 and the ring bit 39 is pressed against the humid tube, so a hole with a large diameter corresponding to the outer diameter of the ring bit is drilled in the side wall of the humid tube. be. Since the lower end of the fixture 41 is provided with a V-shaped notch, the guide cell 22 can be properly fixed to the outer circumference of the hume tube, which has a convex curved surface. boom 4
By rotating the arm 7, bracket 9, support plate 16, etc., the kite cell 22 can be moved to a desired position and tilted at a desired angle. Angle holes can be drilled. Its handling operation is extremely simple.

In the illustrated example, the guide cell support device is configured to use a well-known hydraulic excavator (for example, UHO4-5 manufactured by Hitachi Kenzai Co., Ltd.) with the packet removed, so it can be used alternately with the packet. , which is extremely convenient.

As explained above, the drilling device according to the invention is easy to handle and is extremely simple to use, and is capable of successfully drilling relatively large-diameter holes in humid pipes and the like. It is clear that this device can be used to perforate more than just the Hume's canal.

[Brief explanation of drawings]

FIG. 1 is an external view of an example of the drilling device according to the invention, FIGS. 2 and 3 are side views and front views of the main parts,
@Figure 4 is a sectional view taken along the line A-A in Figure 1, Figure 5 is a view taken along arrow B in Figure 2, Figure 6 is a sectional view of the ring bit, and Figure 7 is another embodiment of the lock bit support device. Fig. 8 is a cross-sectional view of Iwatsuki. 1...Drilling device, 3...Dolly, 4...Boom, 5,
8.12.20...Hydraulic cylinder, 7...Arm,
1゛6... Support plate, 22... Guide cell, 26...
・Air cylinder) 7 da, 33... Drilling Iwatsuki, 35... Shankrond, 39... Ring bit, 41... Fixture, 47... Guide plate, 70... Hum tube. Figure 6 3 7th leap

Claims (2)

[Claims] (1) A guide cell, which is equipped with a fixture at the lower end that can be fixed in contact with the outer surface of a humid pipe, etc., is supported movably in the vertical and lateral directions using a support device icj, and is used to drill rocks. A drilling device characterized by being attached to the guide cell so as to be movable back and forth, and also provided with a drive device for moving the rock drill. (2) The drilling device according to claim 1, wherein the rock bit attached to the rock drill is a cylindrical ring bit having a cutting edge on the peripheral edge of the tip.