JP3537543B2 - Apparatus and method for peeling concrete blocks - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a peeling device for reinforced concrete blocks or rocks cut by a water jet cutting machine or the like.

[0002]

2. Description of the Prior Art Conventionally, breakers for cutting tunnel lining, hanging, dismantling mass concrete, cutting underground continuous walls, dismantling nuclear reactors, dismantling building walls, floors, columns, and other so-called reinforced concrete structures have been conventionally used breakers. , A drill or the like, but a water jet cutting machine is sometimes used as a means for ensuring the finish of the cutting portion neatly.

According to this water jet cutting machine,
A cut is made by applying a water jet to the plane or curved surface of the concrete, and the inside of the concrete that has been cut off around the periphery has to be divided into small pieces with a breaker, drill or the like.

[0004]

In the conventional peeling method for removing the inside cut by the water jet cutting machine or other cutting machines by dividing it further into small pieces, it takes time and time, and the cutting operation is performed by the small cutting work. The damaged surface may be damaged.

SUMMARY OF THE INVENTION An object of the present invention is to solve the disadvantages of the prior art, and to easily remove the cut-off portion in a short time without damaging the cut-off surface by holding the cut-out portion with the insertion lock of the drilling rod and pulling it out. An object of the present invention is to provide a peeling device and a peeling method for a concrete block or the like.

[0006]

In order to achieve the above object, the present invention provides a rod having a cutting bit at its tip provided with a diameter-enlarging cutting blade which is allowed to protrude and retract from the outer periphery of the rod at a position slightly above the cutting bit. The expanding and retracting mechanism
The diameter cutting blade has a tapered joint surface at the inner end
It moved vertically arranged inside the front Symbol rod supermarkets bonding surface
The excavation tool with the wedge-shaped tip of the inner pipe joined is provided so as to be vertically movable and rotatable on a rotary drive having a lift device. Second, the lift device of the rotary drive device is a rotary drive device itself. And a drilling cylinder for vertically moving a drilling tool.

[0007] As a method of peeling concrete blocks or the like, a drilling tool in which the expanded cutting blades are accommodated in the outer periphery of a rod is inserted into concrete or the like which has been cut off using the peeling device, and the drilling tool is removed. At the stage of raising slightly with the lifting device, project the enlarged cutting blade, rotate it on the spot to expand the hole, lock it with this enlarged cutting blade, and pull out the edged concrete etc. by the lifting device. It is the gist.

[0008]

According to the first and fourth aspects of the present invention, a concrete block or the like can be peeled off without any trouble.

According to the second aspect of the present invention, in addition to the above-mentioned operation, in order to pull out the edged concrete or the like, the operation of the peeling cylinder for vertically moving the rotary driving device itself and the vertical movement of the excavating tool are performed. The operation of the excavating cylinder to be performed can be performed with a large stroke by the two-stage operation of both cylinders, and the excavating cylinder can be pulled out with a strong force in a well-balanced manner.

According to the third aspect of the present invention, the enlarged cutting blade is pushed out by the wedge-shaped tip portion of the inner pipe which is moved up and down as a means for projecting and retracting the enlarged cutting blade.
Compared with other pushing means such as a link mechanism, a plurality of radially arranged enlarged cutting blades can be reliably and evenly pushed with a strong force by a simple mechanism.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a partially cutaway front view showing an embodiment of a concrete block or the like peeling device of the present invention, FIG. 2 is a top view of the same, FIG. 3 is a plan view of the same, and FIG. 4 is a bottom view of the same.

In the drawing, reference numeral 1 denotes a drilling tool, which is provided with a cutting bit 2 at a tip thereof and is provided on a rod 3 capable of cutting concrete or rock mass with a carbide tip at an edge slightly above the cutting bit. The arranged enlarged cutting blades 4 are provided so as to be able to protrude and retract from the outer periphery of the rod 3.

There are various types of mechanisms for projecting and retracting the enlarged diameter cutting blades 4 such as those using a link mechanism and those extruding with a cylinder. However, the present invention has a tip inside the rod 3 as shown in FIGS. An inner tube 5 having a sharpened wedge-shaped tip portion 5a is vertically movably arranged, whereas the enlarged diameter cutting blade 4 is formed on a tapered joining surface 4a whose inner end is lowered.

Further, the enlarged cutting blade 4 has a cemented carbide tip 4b at the outer end, and a horizontally long hole 4c at the center and a pin 6 fixed to the rod 3 side engaged therein. In the present embodiment, four enlarged cutting blades 4 are arranged radially at 90 ° intervals as shown in FIG.
A slit 7 through which the enlarged cutting blade 4 passes is formed on the outer periphery of the blade.

In the illustrated example, the portion of the cemented carbide tip 4b is shaped like an inverted arrow with the corners facing upward.
The shape may be reversed as shown in FIG. 4 and an arrow blade shape may be formed so that the portion of the carbide tip 4b is widened.

A water passage 8 is formed at the center of the inner pipe 5, and a water passage 8 'communicating with the water passage 8 is also provided on the rod 3 side.
Is formed, and the tip becomes the discharge port 9. In the figure, 10 is a key for securing engagement between the inner tube 5 and the rod 3, 11 is a spacer,
12 is a nut.

The excavating tool 1 is vertically rotatable and rotatable on a rotary driving device 14 provided with an outrigger as a peeling cylinder 13 as one of the lifting and lowering devices. A hollow rotary drive shaft 17 that is driven to rotate via a speed reducer in a gear case 16 is provided. The rod 3 of the excavating tool 1 is disposed so as to penetrate the hollow rotary drive shaft 17, and the hollow rotary drive shaft 17 and the rod The key 3 is engaged with the key groove so that the rod 3 can move up and down.

The rotary drive unit 14 is provided with an excavating cylinder 18.
And a horizontal plate 19 fixed at the upper end of the rod 3 of the excavating tool 1 is spanned between the excavating cylinders 18, and an inner tube cylinder 20 is started up from the horizontal plate 19. The horizontal board 21 fixed to the upper end of the 5 is put over. A water swivel 22 was attached to the uppermost end of the inner tube 5.

The above is the configuration of the peeling device for concrete blocks and the like according to the present invention. However, as the lifting device, for example, only the peeling cylinder 13 is used instead of the combination of the peeling cylinder 13 and the excavating cylinder 18. You can also
Further, instead of the excavating cylinder 18, a combination of a pinion and a rack driven by a motor can be used. Further, the hollow rotary drive shaft 17 and the rod 3 may be changed to a key-key groove relationship by another chuck mechanism, or a lifting mechanism using a screw may be used instead of the inner tube cylinder 20.

Further, in the example shown in the figure, two excavating tools 1 are supported by four exfoliating cylinders 13 as one device.
Although the motors are driven by the individual motors 15, the present invention is not limited to this.

Next, a method for peeling concrete blocks and the like according to the present invention will be described with reference to FIGS. The apparatus to be used is the above-described peeling apparatus. As shown in FIG. 11, the peeling apparatus is positioned and installed on concrete or the like that has been cut off with a water jet cutting machine or the like. in this case,
The inner pipe 5 is retracted, and the enlarged diameter cutting blade 4 is stored in the rod 3. On the other hand, the excavating cylinder 18 is extended.

As shown in FIG. 12, the motor 15 is driven, the hollow rotary drive shaft 17 is rotated to rotate the rod 3 of the drilling tool 1, and at the same time, the drilling cylinder 18 is reduced to perform drilling. When excavating, water swivel 22, water channel 8, 8 '
Water is discharged from the discharge port 9 through the.

When this excavation is completed, the excavating cylinder 18 is extended as shown in FIG. 13 to slightly raise the excavating tool 1 (about 90 mm), and the inner pipe cylinder 20 is contracted as shown in FIG. Push the inner tube 5. As a result, the enlarged cutting blade 4 is pushed out as shown in FIG. 6 and rotated at that position to form a hole.

When the excavating tool 1 is pulled up, the diameter-enlarging cutting blade 4 may be gradually pushed out to expand the hole.

After the opening, as shown in FIG. 15, the exfoliating cylinder 13 is extended, the excavating cylinder 18 is reduced, and the concrete piece 23 is exfoliated. The load is received by the thrust yoke.

Further, as shown in FIG.
Extend the 18 and pull out the concrete piece 23.

Next, as shown in FIG. 17, the peeling device is lowered onto the floor surface, the inner pipe 5 is retracted, and the excavating cylinder 18 is extended and the excavating tool 1 is pushed in as shown in FIG. The blade 4 is reduced in diameter and housed in the rod 3. Then, the peeled concrete piece 23 is removed as shown in FIG.

Although the above embodiment has been described as a floor-mounted type, it can also be mounted on a truck 24 such as a wheel loader as shown in FIGS. In this case, the cart 24 is equipped with the power unit 26 and the outrigger 27. It can be used for

The object can be applied not only to reinforced concrete but also to bedrock and the like.

[0030]

As described above, according to the peeling apparatus and the peeling method for concrete blocks and the like of the present invention, the beveled portion is gripped by the insertion lock of the drilling rod and pulled out without damaging the beveled surface. It can be easily removed in a short time.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of a peeling device for concrete blocks or the like according to the present invention.

FIG. 2 is a side view showing one embodiment of the peeling device for concrete blocks and the like of the present invention.

FIG. 3 is a plan view showing an embodiment of a peeling device for concrete blocks and the like according to the present invention.

FIG. 4 is a bottom view showing an embodiment of the peeling device for concrete blocks and the like according to the present invention.

FIG. 5 is a longitudinal sectional front view of the excavating tool portion of the peeling device for concrete blocks or the like according to the present invention in a reduced state.

FIG. 6 is a vertical sectional front view of the excavation tool portion of the exfoliating device for concrete blocks or the like according to the present invention in an expanded state.

FIG. 7 is a cross-sectional plan view of a main part of an excavation tool part of a peeling device for a concrete block or the like according to the present invention.

FIG. 8 is a vertical cross-sectional front view showing another embodiment of the excavation tool portion of the exfoliating device for concrete blocks and the like according to the present invention.

FIG. 9 is a side view showing an application example of the peeling device for concrete blocks and the like according to the present invention.

FIG. 10 is a front view showing an application example of a peeling device for a concrete block or the like according to the present invention.

FIG. 11 is a vertical sectional front view showing a first step of the method for peeling concrete blocks or the like of the present invention.

FIG. 12 is a vertical sectional front view showing a second step of the method for peeling concrete blocks or the like of the present invention.

FIG. 13 is a vertical sectional front view showing a third step of the method for peeling concrete blocks or the like of the present invention.

FIG. 14 is a longitudinal sectional front view showing a fourth step of the method for peeling concrete blocks or the like of the present invention.

FIG. 15 is a longitudinal sectional front view showing a fifth step of the method for peeling concrete blocks or the like of the present invention.

FIG. 16 is a vertical sectional front view showing a sixth step of the method for peeling concrete blocks or the like of the present invention.

FIG. 17 is a longitudinal sectional front view showing a seventh step of the method for peeling concrete blocks or the like of the present invention.

FIG. 18 is a longitudinal sectional front view showing an eighth step of the method for peeling concrete blocks or the like of the present invention.

FIG. 19 is a vertical sectional front view showing a ninth step of the method for peeling concrete blocks or the like of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Drilling tool 2 ... Drilling bit 3 ... Rod 4 ... Diameter enlarged cutting blade 4a ... Taper joining surface 4b ... Carbide tip 4c ... Horizontal oblong hole 5 ... Inner tube 5a ... Wedge-shaped tip 6 ... Pin 7 ... Slit 8,8 ′… Water passage 9… discharge port 10… key 11… spacer 12… nut 13… separation cylinder 14… rotation drive device 15… motor 16… gear case 17… hollow rotation drive shaft 18… digging cylinder 19… horizontal plate 20… Cylinder for inner pipe 21 ... Horizontal board 22 ... Water swivel 23 ... Concrete piece 24 ... Bogie 25 ... Boom 26 ... Power unit 27 ... Outrigger

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toshio Oguri 2570-4 Shimotsuruma, Yamato-shi, Kanagawa Nishimatsu Construction Co., Ltd. (72) Inventor Takeshi Taguchi 2570-4 Shimotsuruma, Yamato-shi, Kanagawa Nishimatsu Construction Co., Ltd. Inside the Technical Research Institute (72) Inventor Shiro Yoshioka 3012-2 Ichiuenohara, Atsugi-shi, Kanagawa Prefecture Minken Kogyo Co., Ltd.Atsugi Plant (72) Inventor Haruo Miura 1-29-15-1 Chuo, Nakano-ku, Tokyo In-company (56) References JP-A-52-154224 (JP, A) JP-A-62-63703 (JP, A) JP-A-56-51856 (JP, U) JP-B-38-16001 (JP, B1) (58) Fields surveyed (Int. Cl. ⁷ , DB name) E21C 25/00 E21C 23/09

Claims (3)

(57) [Claims] 1. A freely expanded in diameter cutting blades retractable from the rod periphery provided at a position slightly above the cutting bit a cutting bit to the rod provided at the tip, a diameter cutting blades of the infested mechanism
The enlarged diameter cutting blade has a tapered joint surface at the inner end,
Place this rod inside the rod and move it up and down
A peeling device for a concrete block or the like, wherein a drilling tool having a wedge-shaped tip portion of an inner pipe to be moved is vertically and rotatably provided on a rotary drive device having a lifting device. 2. The peeling device for concrete blocks or the like according to claim 1, wherein the lifting device of the rotary drive device is a peeling cylinder for vertically moving the rotary drive device itself and a drilling cylinder for vertically moving a drilling tool. 3. A rotary driving device having an elevating device, a rod provided with a cutting bit at its tip is provided with a diameter-enlarging cutting blade which is allowed to protrude and retract from the outer periphery of the rod at a position slightly above the cutting bit . As the retracting mechanism, the enlarged cutting blades
The taper joint surface is formed at the inner end of the taper joint surface.
Inner tube wedge placed inside the rod and moved up and down
The excavation tool with the extruded tool joined with the tip is installed vertically and rotatably.A peeling device is installed, and the excavation tool with the enlarged diameter cutting blade housed in the rod outer periphery is inserted into the edged concrete etc. At the stage where the excavating tool is slightly lifted by the elevating device, the enlarged cutting blade is protruded and rotated in place to expand the hole. A method for peeling concrete blocks or the like, characterized by extracting