JPS59185293A - Drilling apparatus - 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 an excavation device used for excavating tunnels and the like.

Excavation of tunnels, etc., has been done by filling the prepared hole with gunpowder and detonating it using rock drilling [L-], but the conventional method using gunpowder generates severe vibrations and noise, so There were problems with pollution prevention. In addition, the destroyed rocks were scattered, which was unfavorable from a safety point of view.

As a rock breaking device that does not use gunpowder, it includes a pair of pressing rods that are inserted into pilot holes drilled in the bedrock in advance.
Hydraulic stone breaking is equipped with a horizontal bar that is inserted into the gap between the pair of pressing rods by hydraulic pressure and acts to expand the gap between the two pressing rods, and the pressing rod ffj is used to crush the hole wall of the prepared hole. As Iso said, conventional hydraulic stone splitting machines are designed to be lifted and used manually, and it has not been possible to use this machine to excavate tunnels and the like in a fully efficient manner.

The present invention provides an excavation device that can efficiently excavate tunnels, etc. using a hydraulic stone cutting iso, and its features include the hydraulic stone cutting iso, The drilling rock for drilling the pilot hole and the rock rock for drilling the pilot hole can be attached to one rotary arm so that they can move parallel to each other,
The rotary support arm is attached to a truck equipped with a traveling device so as to be rotatable about its axis and movable vertically and laterally. Hereinafter, embodiments shown in the drawings will be described.

Figures 1 and 2 show one of the digging devices according to the invention.
The plan view and side view of the example, and FIGS. 3 and 4 are enlarged views of the main parts. It is set up so that it can move freely.

Cabin 3a of truck 3 and base arm pivot N part a b
Since the upper part of the vehicle body including the traveling device 2 is provided so as to be pivotable within a horizontal plane, the base arm 4 can also be pivoted laterally. 13 is a hydraulic cylinder for vertical movement of the base arm. At the distal end of the base arm 4, the rear lower end of the connecting member 7 is pivoted. The piston rod of the hydraulic cylinder 8 which is pivotally connected to the member 4a is located at the pivot 5 (P'). When the hydraulic cylinder 8 is expanded or contracted, the connecting member 7 is rotated up and down.

In the illustrated example, the traveling device 2 employs an endless track driven by an engine mounted on a truck, but it may also employ tires or wheels that run on rails.

A vertical support shaft 9 is provided at the front of the connecting member 7, and the arm holder 14 is supported by the support shaft 9 so as to be rotatable in the horizontal direction. The connecting member 7 and the side surface of the arm holder 14 are connected by a hydraulic cylinder 15, and by expanding and contracting the hydraulic cylinder and the ring, the entire arm holder 14 can be rotated about the support shaft 9. 0 It is sufficient to set the amount of rotation to, for example, about 30 degrees in each direction. When the upper part of the vehicle body is rotated together with the base arm 4, the rock-cutting rock 20 and the hydraulic rock-splitting rock 35, which will be described later, are tilted with respect to the digging surface 95, but this tilt is eliminated by rotating the arm holding base 14 in the opposite direction. be able to.

The arm holding base 14 includes a bearing 16 and an arm rotation device 17.
is provided, the rotary support arm 19 is rotatably supported by the bearing 16, and the rotary support arm 1 is rotatably supported by the bearing 16.
The rear end 19a of 9 is attached to the arm rotation device 17.
ing. The arm rotation device 17 includes gears and fL.
A torque actuator (for example, a torque actuator manufactured by Toritsu Co., Ltd.) is used, which is equipped with a piston having a tooth row that meshes with VC, and by hydraulically moving the piston held in a hydraulic cylinder 17a up and down,
The shaft body (rotation support arm 19) to which the gear is attached is rotated via the gear that meshes with this fLvc. As the arm rotation device for rotating the rotation support arm 19, a rotary snowmaking device such as a hydraulic motor can also be used.

A guide cell 21 for the rock driller 20 and a kite rail 23 for the hydraulic stone splitter 35 are mounted symmetrically around the axis of the rotary support arm 19 on the outer periphery of the rotary support arm 19. The guide cell 21 is supported by a base 25 fixed to the rotary support arm 19 so as to be movable back and forth, and a hydraulic cylinder 26 provided between the base and the guide cell 21 is extended and contracted. Therefore, guide cell 2
1 can be moved back and forth.

A chain is attached between the sprocket wheels 27 and 27' installed at both the front and rear ends of the guide cell 21, and the rear sprocket wheel 27' is connected to the rear sprocket wheel 27' by a foot motor 29VC with a decelerator.
By rotating the rock, the rock rig 20 can be moved back and forth along the guide cell 21. In the figure,
31 is a rock pit, and 32 is a leg for fixing the kite cell 21 to the rock.

The hydraulic stone splitter vA35 is attached to carriages 33 and 38' that are slidably provided on the kite rail 23, and is driven by a feed motor 36 that is hung between the carriages 33 and 33'Vc1d and sprockets 84 and 34'. A chain is attached. Hydraulic stone splitter 35 by operating foot motor 36
It can be moved back and forth along the entire guide rail 23. The rear part of the hydraulic stone splitter 35 is a rear carriage 33
The hydraulic stone splitter 35 can be rotated around its axis by operating the stone splitter rotation device 37 supported by '. . For example, the torque actuator described above can be used as the stone splitter rotating device.

Note that the hydraulic stone splitter 35 is connected to the axis of the rotation support arm 19.
The distance to the press rod 54 described later is equal to the distance from the axis of the rotary support arm 19 to the distance from the axis of the rotary support arm 19 to the drill hole 22130 mm, and by rotating the rotary support arm 19, the drill Iwatsuki can drill a hole. It is constructed so that the press rod 54 can be inserted into the prepared hole as it is.
In this way, drilling of the pilot hole and splitting of the rock using a hydraulic rock splitter can be done extremely efficiently, which is convenient in practice, but in some cases, the rotary support arm 1
It may be configured such that the hole drilling rod 3o and the pressing rod 54 cannot be overlapped only by rotation 9. Further, in the illustrated example, the hydraulic stone splitter 35 and the rock driller 2o are provided on the opposite side of the rotary delivery arm 19 in the diametrical direction, and the hydraulic stone splitter 35 and the rock driller 2o are connected by rotating the rotary support arm 19 by 180 degrees. Although the configuration is such that the Iwatsuki 20 can be switched between the two, it is also possible to switch between the two at a rotation angle smaller than this (for example, 90 degrees).

It would be more convenient if any part from the base arm 4 to the rotary support arm 19 is formed as a telescopic extensible part. Furthermore, if the arm holding base 14 is connected to the connecting member 7 via a parallel link device so that the rotation support arm 19 can be moved in parallel in the lateral direction, this parallel link device can be used to dig. This is convenient because it is possible to easily drill pilot holes that are not inclined laterally even at the side ends of the hollow surface.

FIG. 5(a), Φ) is a cross-sectional view of an example of a hydraulic stone splitter 35 and an external view of its tip. 51
It mainly consists of a front cylinder part 52 provided at the front part and a cylinder tube 53 provided at the rear part.

The rear portions of a pair of pressing rods 54 and the rear portions of a wedge rod 55 inserted into the gap between the two pressing rods 54 are fitted into the front cylinder portion 52. The rear part of the press rod 54 fitted into the front cylinder part 52 is slightly raised, and the rear end thereof has a protruding piece 56 that protrudes laterally.
is provided. A retaining ring 57 is fixed to the inner surface of the front end of the front cylinder part 52 by bolts 58, and the inner side of the retaining ring 57 is in contact with the rubber ring 59 surrounding both presser bars 54 and the rubber link 59. A presser ring 6o is provided.

A mouthpiece 61 is fixed to the front end surface of the front cylinder part 52 by bolts 62, and is attached to the rubber ring 59 and the presser link 60.
prevent it from deviating forward.

The length of the protruding pieces 56 on both sides of the pressing rod 54 is the same as that of the retaining ring 5.
7, so when the retaining ring 57 is not attached and the press rod 54 is removed forward, it will not fall.
I don't. The middle part of the front cylinder part 52 has a double wall structure, and a sleeve 64 is fitted inside the inner wall 63 of the middle part. The sleeve 64 has a 7-runshi 64a at the front end,
A screw 64b'i is provided on the outer periphery of the rear end. By screwing the nut 65 onto the screw 64b with the flange 64a in contact with the front end of the inner wall 63, the sleeve 64
is fixed. Threaded part V between sleeve 64 and NAND 65
Cid, a set screw 66 for preventing loosening is screwed. Sleeve 6I! An abutment ring 67 is screwed onto the front end surface of '.

A mechanism 7o is provided at the rear of the front cylinder portion 52 where the center of gravity of the hydraulic stone splitter 35 is located, and a support shaft 4° is rotatably fitted into this mechanism. A carriage 33 is fixed to the support shaft 40. This hydraulic stone splitter 35 can be freely rotated around its axis. It is desirable to insert a bearing such as a roller bearing between the support shaft 4o and the groove 7o.

Next, the same cylinder tube 53 is connected to the rear side of the front cylinder part 52 behind a bolt 73. A piston 74 is held inside the cylinder tube 53. The cylinder tube 53 and the piston 74 constitute a hydraulic cylinder.

At the tip of the shaft of the piston door 5 that protrudes forward from the piston 74, there is provided a threaded socket 75a with a screw provided on the inner surface. A wedge rod support 76 is screwed on. A set screw 77 for preventing loosening is provided between the shaft portion of the piston rod 75 and the threaded portion of the wedge rod support 76. A recess 78 into which the rear end of the wedge rod 55 fits is provided in the front 8 of the wedge rod support 7G.

A groove 55a is formed along the outer peripheral surface of the rear end of the wedge rod 55, and a ball groove 76a is formed between the groove 55a and the inner peripheral surface of the wedge rod support 76. A plurality of steel balls 79 are held between the wedge rod 55 and the wedge rod support 76. In other words, the wedge rod 55 and the wedge rod support 76 each hold a plurality of steel balls 79 partially fitted into grooves provided in the respective holes. 79.

Note that the steel ball inlet 80 is provided at one location of the wedge rod support 76, but is closed by a closing screw 8'Oa.
This prevents the steel ball from deviating to the outside.

The rear end surface 55 of the wedge rod 55 is formed as a convex spherical surface.
l The bottom surface 7 of the recess 78 of the wedge rod support 76 that this surface comes into contact with
8a is formed as a concave spherical surface that comes into close contact with the convex spherical surface of the wedge rod 55.

For this reason, the contact area between the wedge rod 55 and the wedge rod support 76 is increased, and force is effectively transmitted between the two.

The front end opening of the cylinder tube 53 is covered by a front lid 81, and the piston door 5 slides on the inner surface of the front IJ81. Piston Ron door 5 is V when moving forward
Although it protrudes into the cid sleeve 64, the inner diameter of the sleeve 64 is slightly larger than the inner diameter of the front cover 81, and the outer diameter of the wedge rod support 76 is somewhat larger than the outer diameter of the piston rod 75. Therefore, the outer peripheral surface of the piston door 5 is effectively prevented from coming into contact with the sleeve 64 and being damaged. A piston 74 is screwed onto the rear end of the piston rod 75, and a set screw 82 for preventing loosening is screwed into the screw. O-rings 88.88' and gaskets 84.84' are provided at necessary locations on the piston 74 and the front cover 81, respectively.

Piston Ron door 5f: Hydraulic oil for advancing is supplied to the rear of the piston 74 from the hydraulic hose 92 through the oil passage 86. Hydraulic oil for retracting the piston door 5 is supplied to the front part of the piston 74 through the entire oil passage 87. During forward movement, the cH ura passage 87 serves as an oil return passage in front of the piston, and during backward movement, oil passage 86 serves as an oil return passage behind the piston.

When using this drilling device 1, first of all,
20 is used to drill a pilot hole 96 of an appropriate degree in the drilling surface 95. The diameter of the prepared hole 96 is slightly larger than the outer diameter of the pressing rod 54. Next, as shown in FIG. 6, the rock driller 20 and the hydraulic stone splitter 35 are replaced, and the pair of press rods 54 of the hydraulic stone splitter 35 are fully inserted into the prepared hole 96.
A wedge rod 55 inserted into the gap between the two pressers 54 is advanced by hydraulic pressure. Both inner surfaces of both pressers 54 are formed as inclined surfaces forming an angle α, and both surfaces of the wedge rod 55 that contact these two inclined surfaces are also formed as inclined surfaces matching the above-mentioned inclined surfaces, so that the wedge rod 55 With the advancement of the double press 54
As the distance between N1 and N1 expands, a huge pressure is applied to the inner wall of the pilot hole, and the rock is crushed.

This drilling machine is equipped with one rotary support arm 19 that can be moved up and down, left and right, and a rock drill 2 for drilling a pilot hole is attached to this rotary support arm 19.
0 and a hydraulic stone splitter 35 that destroys rock using the prepared hole drilled by the rock drill 20. By rotating the rotary support arm 19, the rock drill 20 and the hydraulic stone splitter 35 are installed. Since these can be used alternately, rock excavation can be carried out extremely efficiently.

Since a single cart is equipped with a rock driller and a hydraulic stone splitter, there is no need to change carts, and it does not take up much space, making it especially suitable for excavating tunnels with small sections. It's convenient. Since the rock can be cracked immediately after drilling the pilot hole, the interval between pilot holes, etc. can be adjusted as appropriate depending on the rock quality. If the rotary support arm 19 is configured to be able to rotate 360 degrees as shown in the illustrated example, there will be no blind spots, so it becomes possible to drill holes in any part of the digging surface. Able to perform extremely effective work.

Furthermore, since no gunpowder is used to excavate the rock, it is highly safe and generates little noise.

As explained above, the excavation NId related to non-invention
This is an excellent tool that allows you to safely and efficiently excavate tunnels, etc.

[Brief explanation of drawings]

Figure vJ1 and Figure 2 show part 1 of the digging device according to the invention.
For example, a plan view and a side view, FIGS. 3 and 4 are an enlarged plan view and side view of the main parts, and FIG.
), (b) is a cross-sectional view of a hydraulic stone breaking rock, an external view of its tip, and an explanatory view of the digging surface in FIG. 6. 1...Drilling device, 2...Traveling device, 8...Dolly,
4... Base arm, 7... Connection member, 9... Support shaft, 8°13.15.26... Hydraulic cylinder, 14.
...Arm holding stand, 16...Bearing, 17...Arm rotation device, 19...Rotation support arm, 20...Iwatsuki for drilling, 21...Guide cell, 23...Guide rail, 29 , 36...Feed motor, 35...Hydraulic stone splitter, 54...Press rod, 55...Wedge bar, 96...
- Pilot hole. Patent applicant Yamafu Tetsukosho Co., Ltd. Agent Patent attorney Hiroshi Sugawara

Claims (1)

[Claims] (1) A pair of press rods that are inserted into a prepared hole drilled in the rock, and a press that is hydraulically inserted into the gap between the pair of press rods,
A hydraulic stone splitter equipped with a wedge rod that acts to push and spread a pair of press rods, and the driller for drilling the pilot hole are attached to one rotary support arm so as to be movable in parallel with each other, An excavating device characterized in that the rotary support arm is attached to a cart equipped with a traveling device so as to be rotatable about its axis and movable vertically and laterally.