JP7034455B2 - Surface material peeling device - Google Patents

Description

The present invention relates to the surface layer of a structure such as a sheet or tile attached to the indoor or rooftop floor of a building, a pavement material on the surface of a road, or a wall material or tile provided on an outer wall of a building or a wall surface of a tunnel. The present invention relates to a surface material peeling device for peeling a material and a surface material peeling method.

Conventionally, for the purpose of providing a low-cost flooring material peeling device capable of efficiently peeling a flooring material, Japanese Patent Application Laid-Open No. 2006-291592 describes that the cutter blade is reciprocated in the front-rear direction by a vibrator. Disclosed is a flooring peeling device in which a mounting bracket is connected to a frame of a stripping machine and the mounting bracket is detachably attached to a soil removal plate of a small hydraulic excavator.

Japanese Unexamined Patent Publication No. 2006-291592

However, in the apparatus disclosed in Patent Document 1, since the oscillator is supported by an elastic body (see paragraph number “0034” in the specification of Patent Document 1), the configuration becomes complicated and the cost is reduced. There was a limit to that. In addition, since the configuration is complicated, the weight of the device also increases, and it is difficult to manually attach / detach the device to / from the soil removal plate.

The present invention has been made in view of the above points, and is a surface layer material that can be easily attached to and detached from a hydraulic excavator in the field by simplifying the configuration to further reduce the cost and reduce the weight. It is an object of the present invention to provide a peeling device and a method for peeling a surface layer material.

The surface material peeling device of the present invention is
In a surface material peeling device narrower than the soil removal plate, which is detachably attached to the soil removal plate of the hydraulic excavator.
It is provided with an upper grip portion that grips the upper end of the soil removal plate, a lower grip portion that grips the lower end of the soil removal plate, and a connecting portion that connects the upper grip portion and the lower grip portion. A soil removal plate mounting part that can be moved in the width direction of the plate,
A base attached to the soil removal plate mounting portion and
A tubular portion whose axis is attached to the base portion in a direction orthogonal to the longitudinal direction of the soil removal plate, and a tubular portion.
A shaft portion that is rotatably inserted into the cylinder portion and whose axial movement is restricted, and a shaft portion.
A blade body provided on the tip end side of the shaft portion to peel off the surface layer material of the structure, and
It is characterized by having.

According to the surface material peeling device of the present invention, the blade is attached to the axis in the front-rear direction of the surface material peeling device in order to make the blade follow the inclination of the floor surface, which is considered to be essential as a function of the surface material peeling device. The mechanism for rotating the blade is realized by rotatably inserting the shaft portion provided with the blade into the cylinder portion and restricting the movement in the axial direction. Therefore, the configuration of the surface layer material peeling device can be simplified, and further cost reduction and weight reduction can be achieved. Examples of the structure here include the floor surface, rooftop, road, and the like of the building.

A preferred example of the surface material peeling device of the present invention is
The outer circumference of the shaft portion is provided with a convex portion or a concave portion, and the outer periphery thereof is provided with a convex portion or a concave portion.
It is characterized by comprising a rotation restricting member in which the convex portion or the concave portion interferes with the tubular portion or the base portion to restrict further rotation when the tubular portion is rotated by a predetermined angle.

According to a preferred example of the surface material peeling device of the present invention, the rotation restricting member for restricting the rotation of the shaft portion by a predetermined angle or more is a convex portion or a concave portion provided on the shaft portion. It can be simple.

A preferred example of the surface material peeling device of the present invention is
A convex portion is provided on the outer periphery of the shaft portion, and a convex portion is provided.
When the shaft portion rotates at a predetermined angle, the convex portion interferes with the base portion to restrict further rotation, and the length of the convex portion is changed to cause the convex portion and the base portion. It is characterized by including a rotation restricting member capable of changing the rotation angle of the shaft portion until it interferes with the shaft portion.

According to a preferred example of the surface material peeling device of the present invention, the rotation restricting member for restricting the rotation of the shaft portion by a predetermined angle or more is a convex portion provided on the shaft portion, and further, the length of the convex portion. Since the rotatable angle of the shaft portion can be changed by changing the above, the specifications of the surface layer material peeling device can be changed according to the work site while having a simple configuration.

A preferred example of the surface material peeling device of the present invention is
The blade is characterized by having elasticity to follow the waviness of the surface of the structure.

According to a preferred example of the surface material peeling device of the present invention, since the blade has elasticity to follow the swell of the working surface, the surface material can be peeled off cleanly with a simple structure.

A preferred example of the surface material peeling device of the present invention is
The upper grip portion can be attached to a desired position in the vertical direction of the connecting portion, and the distance between the upper grip portion and the lower grip portion can be adjusted.

According to a preferred example of the surface material peeling device of the present invention, in the bucket mounting portion, the distance between the upper grip portion and the lower grip portion can be adjusted, so that the bucket mounting portion can be adapted to various sizes of soil removal plates. can.

A preferred example of the surface material peeling device of the present invention is
In order to wind the peeled surface layer material, a winding portion which is bent in an arc shape or a dogleg shape in a side view and whose opening is directed toward the tip end side of the blade body is provided behind and above the blade body. It is characterized by.

According to a preferred example of the surface material peeling device of the present invention, since the surface material peeled off at the winding portion can be wound, the peeled surface material is not scattered and the work can be performed in an orderly manner.

The surface material peeling device of the present invention is
In the surface material peeling device that is detachably attached to the bucket of the hydraulic excavator
A bucket mounting part that sandwiches the tip of the bucket,
A base attached to the bucket mounting portion and
A tubular portion whose axis is attached to the base portion in a direction orthogonal to the tip of the bucket, and a tubular portion.
A shaft portion that is rotatably inserted into the cylinder portion and whose axial movement is restricted, and a shaft portion.
A blade body provided on the tip end side of the shaft portion to peel off the surface layer material of the structure, and
It is characterized by having.

The surface material peeling device of the present invention is
The outer circumference of the shaft portion is provided with a convex portion or a concave portion, and the outer periphery thereof is provided with a convex portion or a concave portion.
It is characterized by comprising a rotation restricting member in which the convex portion or the concave portion interferes with the tubular portion or the base portion to restrict further rotation when the tubular portion is rotated by a predetermined angle.

The surface material peeling device of the present invention is
A convex portion is provided on the outer periphery of the shaft portion, and a convex portion is provided.
When the shaft portion rotates at a predetermined angle, the convex portion interferes with the base portion to restrict further rotation, and the length of the convex portion is changed to cause the convex portion and the base portion. It is characterized by including a rotation restricting member capable of changing the rotation angle of the shaft portion until it interferes with the shaft portion.

The surface material peeling device of the present invention is
The blade is characterized by having elasticity to follow the waviness of the structure.

The surface material peeling device of the present invention is
The bucket mounting portion is characterized by comprising a bucket insertion pin to be inserted into a claw mounting hole of the bucket.

According to these surface material peeling devices of the present invention, the same effects as those of the above surface material peeling device can be obtained. Further, as a structure, not only the floor surface and the road surface but also the peeling of the surface layer material attached to the wall surface can be dealt with. Further, in the configuration in which the bucket mounting portion includes the bucket mounting pin to be inserted into the claw mounting hole of the bucket, the bucket mounting portion can be securely fixed.

The surface material peeling method of the present invention is
A surface material peeling device provided with the above-mentioned take-up portion, and
Using a grapple attached to the hydraulic excavator,
The surface layer material that has been peeled off and wound up by the surface layer material peeling device is sandwiched between the grapples and recovered.

According to the surface material peeling method of the present invention, the peeled surface material can be recovered by the same hydraulic excavator equipped with the surface material peeling device, so that the work efficiency is excellent.

A preferred example of the surface material peeling method of the present invention is
It is characterized in that a sandwich plate over the width of a plurality of claws in which the grapples are arranged in parallel is provided, and the surface layer material that has been peeled off and wound up by the sandwich plate is sandwiched and collected.

According to a preferred example of the surface material peeling method of the present invention, since the surface material is sandwiched between the sandwich plates, the surface material is not torn by the claws of the grapple, and the peeled surface material can be recovered more efficiently.

As described above, according to the surface material peeling device and the surface material peeling method of the present invention, the cost is further reduced by simplifying the configuration, the weight is reduced, and the hydraulic excavator can be easily manually operated on site. Can be made removable.

It is a figure which attached the surface layer material peeling apparatus which concerns on 1st Embodiment and 2nd Embodiment of this invention to a hydraulic excavator. It is a side view of the surface layer material peeling apparatus which concerns on 1st Embodiment of this invention. It is a top view of the surface layer material peeling apparatus which concerns on 1st Embodiment of this invention. It is the end view of the line AA of FIG. 2, and is the figure explaining the rotation restricting member. It is a side view of the surface layer material peeling apparatus which concerns on 2nd Embodiment of this invention. It is a top view of the surface layer material peeling apparatus which concerns on 2nd Embodiment of this invention. It is a figure explaining the surface layer material peeling method which concerns on one Embodiment of this invention. It is a figure explaining the pinch part attached to the claw of a grapple.

Hereinafter, embodiments of the surface material peeling device and the surface material peeling method of the present invention will be described in detail with reference to the accompanying drawings.

[First Embodiment of Surface Material Peeling Device]
As shown in FIGS. 1 to 4, the surface layer material peeling device 10 of the present embodiment is detachably attached to the soil removal plate 82 of the hydraulic excavator 80, and is a floor sheet or a pavement material on the road surface attached to the floor surface. The surface layer material 12 such as the above is peeled off, and the soil removal plate mounting portion 20, the base portion 30, the angle adjusting portion 32, the cylinder portion 40, the shaft portion 41, the rotation restricting member 44, and the blade portion 50 are used. , The winding unit 53 is provided.

The earth removal plate mounting portion 20 is for attaching and detaching the surface layer material peeling device 10 to the earth removal plate 82 of the hydraulic excavator 80, and includes an upper grip portion 21, a lower grip portion 24, and a connecting portion 27. .. Further, since the soil removal plate mounting portion 20 is configured to be narrower than the soil removal plate 82 and is movable in the width direction of the soil removal plate 82, it can be positioned at an arbitrary position in the width direction of the soil removal plate 82. The soil removal plate mounting portion 20 can be brought to the site. For example, even if the hydraulic excavator 80 is near the wall surface in the left-right direction, the soil removal plate mounting portion 20 can be mounted on the end of the soil removal plate 82. The surface layer material 12 can be peeled off to the edge of the floor surface.

The upper grip portion 21 grips the upper end of the soil removal plate 82 and has a substantially J-shape in side view. Further, the upper grip portion 21 includes a spacer 22 and a grip portion 23 extending from the spacer 22 to the back side of the soil removal plate 82 to grip the soil removal plate 82. The dimensions of the spacer 22 are appropriately changed according to the thickness of the upper end of the soil removal plate 82, and the spacer 22 can be adapted to the soil removal plate 82 having various thicknesses.

The lower grip portion 24 grips the lower end of the soil removal plate 82, and includes a folded portion 25 and a lower grip bolt 26. The folded-back portion 25 is a plate-shaped member extending slightly upward from the lower end of the soil-removing plate mounting portion 20 to the back side of the soil-removing plate 82, and is provided with screw holes. The lower gripping bolt 26 is screwed into the screw hole of the folded-back portion 25 and penetrates to the back side of the soil removal plate 82 to fix the lower gripping portion 24.

The connecting portion 27 connects the upper grip portion 21 and the lower grip portion 24, and is extended upward from the front of the lower grip portion 24. Further, the connecting portion 27 is provided with a plurality of vertically long elongated holes 28 for inserting bolts for fastening the upper grip portion 21, so that the upper grip portion 21 can be fixed at an arbitrary position. ing. As a result, the soil removal plate mounting portion 20 can be attached to a plurality of soil removal plates 82 having different height dimensions only by attaching / detaching bolts and adjusting the positions. Further, even when the above-mentioned earth-removing plate mounting portion 20 is moved in the width direction of the earth-removing plate 82, it can be moved by simply loosening the bolt used for the upper gripping portion 21 and the lower gripping bolt 26. can.

The base portion 30 is a plate-shaped member whose rear end is attached to the soil removal plate mounting portion 20 by a hinge 31. Further, the angle of the base portion 30 with respect to the earth removal plate mounting portion 20 can be freely changed by the angle adjusting portion 32 with the hinge 31 as an axis.

The angle adjusting portion 32 is fixed at a desired angle while freely changing the angle of the base portion 30, and includes a first bracket 33, a second bracket 34, a support member 35, a first pin 36, and a second. It is composed of a link mechanism including a pin 37. The first bracket 33 is a plate-shaped member erected on the connecting portion 27, and is provided with a plurality of holes for passing the first pin 36. The second bracket 34 is a plate-shaped member erected on the base 30 and is provided with a hole for passing the second pin 37. In the present embodiment, the support member 35 is a strip-shaped member cut to a predetermined size, and a plurality of holes for passing the first pin 36 are provided in the vicinity of the upper end thereof. Further, a hole for passing the second pin 37 is provided in the vicinity of the lower end of the support member 35. Then, the first bracket 33, the second bracket 34, and the support member 35 are fixed by the first pin 36 and the second pin 37, and the base 30 is fixed at a desired angle.

The tubular portion 40 is a tubular member whose axis is attached to the base portion 30 in a direction orthogonal to the longitudinal direction of the soil removal plate 82, that is, in the front-rear direction of the hydraulic excavator 80.

The shaft portion 41 is rotatably inserted into the tubular portion 40 and its movement in the axial direction is restricted. A flange portion 42 for restricting the backward movement of the tubular portion 40 is provided near the tip of the shaft portion 41, and a flange portion 42 for restricting the forward movement of the tubular portion 40 is also provided near the base end of the shaft portion 41. A motion control member 44 is provided. Further, a blade portion 43 for attaching the blade portion 50 is provided at the tip of the tubular portion 40. It should be noted that the regulation of the axial movement of the tubular portion 40 is not limited to the above example, and a member protruding from the inner diameter of the tubular portion 40 may be provided in the vicinity of the end portion of the shaft portion 41.

As shown in FIGS. 4A to 4C, the rotation restricting member 44 is provided with a convex portion 45 on the outer periphery of the shaft portion 41, and the shaft portion 41 is rotated at a predetermined angle with respect to the tubular portion 40. Occasionally, the convex portion 45 interferes with the base portion 30 to restrict further rotation. In the present embodiment, a bar is used as the rotation restricting member 44, and the bar penetrates a hole provided in the vicinity of the rear end of the shaft portion 41 in a direction orthogonal to the axis, and both ends of the bar are further formed. Projects from the shaft portion 41 to form the convex portion 45. Further, the rotation restricting member 44 rotates the shaft portion 41 until the convex portion 45 and the base portion 30 interfere with each other by changing the length of the bar member, that is, by changing the length of the convex portion 45. The angle of movement can be changed. For example, the length of the convex portion 45 shown in FIG. 4C is longer than that of the rotation angle θ1 of the shaft portion 41 in the embodiment shown in FIG. 4B in which the length of the convex portion 45 is short. It can be seen that the rotation angle θ2 of the shaft portion 41 is smaller.

In addition to the above example, the rotation restricting member 44 may be fitted into the groove by providing a groove and a key with a large play, or a method using a spline, or providing a groove in the circumferential direction of the tubular portion 40. Various methods such as a method of providing the protrusion on the shaft portion 41 are adopted.

The blade portion 50 is for peeling off the surface layer material 12 of the floor surface or the road surface (hereinafter, may be referred to as “floor surface or the like” in the present embodiment), and the blade body holding portion 51 and the blade body 52 are separated from each other. Be prepared. The blade holding portion 51 is two plate-shaped members attached so as to sandwich the blade portion 43 provided at the tip of the tubular portion 40. The blade 52 is sandwiched between the blade holding portions 51 and comes into direct contact with the floor surface or the like, is made of a material such as steel, and has elasticity for following the swell of the floor surface or the like. Even if the hydraulic excavator 80 tilts in a direction that pitches relative to the floor surface or the like due to the elasticity of the blade 52 and the rotation of the shaft portion 41, or the hydraulic excavator 80 with respect to the floor surface or the like. The blade 52 follows the floor surface and the like even if it is relatively tilted in the rolling direction, and the surface layer material 12 can be peeled off without any problem.

The take-up portion 53 is for winding the surface layer material 12 peeled off by the blade body 52, and is bent in an arc shape or a dogleg shape in a side view, and the opening thereof is directed toward the tip end side of the blade body 52. It is a plate-shaped member. The surface layer material 12 such as the floor surface peeled off by the blade 52 is wound by the winding portion 53 in the direction shown by the arrow a in FIG. Examples of the surface layer material 12 to be wound include a floor sheet material adhered to the floor surface, a floor tile material, a waterproof layer installed on the roof of a building, and the like. Further, when the pavement material on the road surface such as asphalt is peeled off, the take-up portion 53 pushes the peeled pavement agent forward and retreats to the left and right. As a result, the take-up portion 53 has an effect of preventing the peeled pavement material from colliding with the soil removal plate mounting portion 20 and the like, and damaging or soiling the soil removal plate mounting portion 20 and the like.

[Second Embodiment of Surface Material Peeling Device]
Next, the surface layer material peeling device 11 according to the second embodiment will be described with reference to FIGS. 1, 5 and 6. In the surface material peeling device 11 of the present embodiment, the parts having the same configuration as the surface material peeling device 10 according to the first embodiment are designated by the same reference numerals and the description thereof will be omitted. The surface material peeling device 11 of the present embodiment is detachably attached to the bucket 83 of the hydraulic excavator 80 to peel off the surface material 12 on the wall surface, the floor surface, or the road surface. A cylinder portion 40, a shaft portion 41, a rotation restricting member 44, and a blade portion 50 are provided.

The bucket mounting portion 60 sandwiches the bucket 83 of the hydraulic excavator 80 and mounts the surface material peeling device 10 on the bucket 83 so as to be detachable. A pin 63 is provided. The bucket mounting main body 61 is a member having a rectangular shape in a plan view and a substantially U shape in a side view, and the tip of the bucket 83 is fitted into the opening thereof. The bucket mounting bolt 62 is a bolt that penetrates from above and below the bucket mounting main body 61, and the tip of the bucket mounting bolt 62 is brought into contact with the bucket 83 to fix the bucket mounting main body 61. The bucket mounting pin 63 is a pin mounted in a claw mounting hole provided near the tip of the bucket 83, and even if the bucket mounting bolt 62 is loosened, the bucket mounting main body 61 does not fall off from the bucket 83. It is fixed as such.

The base portion 64 is attached to the bucket mounting portion 60, and is configured in a wedge shape in a side view so that the tubular portion 40, the shaft portion 41, and the blade 52 can be attached at an angle with respect to the bottom surface 84 of the bucket 83. Wedge. A tubular portion 40 is provided on the base portion 64, and a shaft portion 41, a rotation restricting member 44, and a blade portion 50 are further attached to form a surface layer material peeling device 11.

Then, the surface material peeling device 11 of the present embodiment is mounted on the bucket 83 of the hydraulic excavator 80 as described above, and can peel the surface material 12 provided on the wall surface, the floor surface, or the road surface. Examples of the surface layer material 12 provided on the wall surface include tile materials and surface finishing materials provided on the wall surface of a building or the inner wall of a tunnel. The surface layer material 12 provided on the floor surface or the road surface is as described in the first embodiment.

[Surface material peeling method]
Next, an embodiment of the surface material peeling method using the surface material peeling device 10 and the hydraulic excavator 81 according to the first embodiment described above will be described with reference to FIGS. 7 and 8.

First, the hydraulic excavator 81 used in the surface material peeling method of the present embodiment will be described. The hydraulic excavator 81 has a gripping tool called a grapple 85 attached to the attachment. Further, in the grapple 85, a plurality of parallel claws 86 face each other, and one sandwiching portion 70 is attached to the plurality of parallel claws 86, and the other side is further attached to the plurality of parallel claws 86 on the opposite side. The sandwiching portion 70 is attached.

The pinching portion 70 includes a claw mounting portion 71 and a pinching plate 72. The claw mounting portion 71 fixes the sandwiching portion 70 to the grapple 85, and is covered near the tip of the claw 86 of the grapple 85 and fixed with a known bolt or the like. The sandwich plate 72 is configured to have substantially the same length as the width w in the vicinity of the tip of the claw mounting portion 71 and over a plurality of parallel claws 86 of the grapple 85. Then, when the surface layer material 12 peeled off by the grapple 85 is sandwiched, the surface layer material 12 is surely sandwiched by the sandwich plate 72.

Next, a specific example of the surface layer material peeling method will be described. First, the surface layer material 12 on the floor surface is peeled off by the surface layer material peeling device 10 mounted on the soil removal plate 82 of the hydraulic excavator 81. Then, when the hydraulic excavator 81 is advanced as it is while being peeled off, the surface layer material 12 peeled off by the take-up portion 53 is taken up. Next, the surface material 12 wound up by the grapple 85 is sandwiched and collected, and loaded on a loading platform of a trolley, a truck vehicle, or the like parked near the hydraulic excavator 81. By continuously peeling and recovering the surface layer material 12, the surface layer material 12 on the floor surface can be efficiently peeled off. The surface layer material peeling method of the present embodiment targets a floor sheet material or the like attached to the floor surface, but if the winding of the surface layer material peeled off by the winding portion 53 is not taken into consideration, the road surface It can also be used for peeling asphalt pavement and the like.

As described above, according to the surface material peeling devices 10 and 11 of the above-described embodiment, since the tubular portion 40 and the shaft portion 41 are provided, the front and rear shafts of the surface material peeling devices 10 and 11 are provided. It can cope with the inclination of the floor surface or the wall surface. Further, since the blade body 52 has elasticity, it is possible to cope with a change in inclination of the surface layer material peeling device 10 with respect to the left and right axes. In this way, the function corresponding to the inclination and swell of the floor surface or the wall surface, which can be said to be indispensable for the surface layer material peeling devices 10 and 11, is realized by the cylinder portion 40, the shaft portion 41, and the blade body 52 having elasticity. Lightweight surface material peeling devices 10 and 11 can be used with a simple structure. Further, since it is simple and lightweight, it can be easily attached to and detached from the hydraulic excavators 80 and 81 at the work site, and the setup can be changed quickly.

Further, since the rotation restricting member 44 is a bar material that is penetrated through the shaft portion 41, the angle at which the shaft portion 41 can be easily rotated by changing the length of the bar member is set while the configuration is simple. You can make adjustments.

Further, according to the above-mentioned surface layer material peeling method, the surface layer material 12 that has been peeled off and wound up can be recovered by the grapple 85 of the same hydraulic excavator 81, and the work efficiency is greatly improved. Further, since the surface layer material 12 peeled off from the surface is sandwiched by the sandwiching portion 70 instead of the claw 86 of the grapple 85, the surface layer material 12 to be collected is not torn and the work site is not scattered.

The above-mentioned surface layer material peeling device and surface layer material peeling method are examples of the present invention, and their configurations can be appropriately changed without departing from the spirit of the invention.

10, 11 ... Surface material peeling device, 12 ... Surface material,
20 ... Earth removal plate mounting part, 21 ... Upper grip part, 22 ... Spacer, 23 ... Grip part, 24 ... Lower grip part, 25 ... Folded part, 26 ... Lower grip bolt, 27・ ・ Connecting part, 28 ・ ・ Long hole,
30 ... Base (1st embodiment), 31 ... Hinge, 32 ... Angle adjustment part, 33 ... 1st bracket, 34 ... 2nd bracket, 35 ... Support material, 36 ... 1st pin, 37 ... 2nd pin,
40 ... Cylindrical part, 41 ... Shaft part, 42 ... Flange part, 43 ... Blade part, 44 ... Rotation control member (bar material), 45 ... Convex part,
50 ... Blade part, 51 ... Blade holding part, 52 ... Blade part, 53 ... Winding part,
60 ... bucket mounting part, 61 ... bucket mounting body part, 62 ... bucket mounting bolt, 63 ... bucket insertion pin, 64 ... base (second embodiment),
70 ... pinching part, 71 ... claw mounting part, 72 ... pinching plate,
80, 81 ... Hydraulic excavator, 82 ... Soil removal plate, 83 ... Bucket, 84 ... Bottom, 85 ... Grapple, 86 ... Claw,

Claims (6)

In a surface material peeling device narrower than the soil removal plate, which is detachably attached to the soil removal plate of the hydraulic excavator.
It is provided with an upper grip portion that grips the upper end of the soil removal plate, a lower grip portion that grips the lower end of the soil removal plate, and a connecting portion that connects the upper grip portion and the lower grip portion. A soil removal plate mounting part that can be moved in the width direction of the plate,
A base attached to the soil removal plate mounting portion and
A tubular portion whose axis is attached to the base portion in a direction orthogonal to the longitudinal direction of the soil removal plate, and a tubular portion.
A shaft portion that is rotatably inserted into the cylinder portion and whose axial movement is restricted, and a shaft portion.
A blade body provided on the tip end side of the shaft portion and for peeling off the surface layer material of the structure is provided.
Further, a convex portion is provided on the outer periphery of the shaft portion, and a convex portion is provided.
When the shaft portion rotates at a predetermined angle, the convex portion interferes with the base portion to restrict further rotation, and the length of the convex portion is changed to cause the convex portion and the base portion. A surface material peeling device comprising a rotation restricting member capable of changing the rotation angle of the shaft portion until it interferes with the surface material. In the surface material peeling device that is detachably attached to the bucket of the hydraulic excavator
A bucket mounting part that sandwiches the tip of the bucket,
A base attached to the bucket mounting portion and
A tubular portion whose axis is attached to the base portion in a direction orthogonal to the tip of the bucket, and a tubular portion.
A shaft portion that is rotatably inserted into the cylinder portion and whose axial movement is restricted, and a shaft portion.
A blade body provided on the tip end side of the shaft portion to peel off the surface layer material of the structure, and
A surface material peeling device characterized by being provided with. The outer circumference of the shaft portion is provided with a convex portion or a concave portion, and the outer periphery thereof is provided with a convex portion or a concave portion.
2 . The surface layer material peeling device according to the above. A convex portion is provided on the outer periphery of the shaft portion, and a convex portion is provided.
When the shaft portion rotates at a predetermined angle, the convex portion interferes with the base portion to restrict further rotation, and the length of the convex portion is changed to cause the convex portion and the base portion. The surface material peeling device according to claim 2 , further comprising a rotation restricting member capable of changing the rotation angle of the shaft portion until the shaft portion interferes with each other. The surface material peeling device according to any one of claims 2 to 4 , wherein the blade has elasticity to follow the waviness of the surface of the structure. The surface layer material peeling device according to any one of claims 2 to 5 , wherein the bucket mounting portion includes a bucket insertion pin to be inserted into a claw mounting hole of the bucket.

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