JPH05214820A - Chipping device for concrete - Google Patents

Abstract

PURPOSE:To perform high-efficient chipping of a concrete floor at a specified depth. CONSTITUTION:A plurality of grooves 84, 84,... are formed in a concrete floor 22 through rotation of a plurality of concrete disc cutters 46, 46... as a body 12 of a chipping device 10 is run and moved along a rail 36 installed on a placed concrete floor 22. At a timing when the groove 84, 84... are positioned below a hammer mechanism 18 through running movement of the body 12, impact hammers 64, 64... of air hammer devices 62, 62... are hammered and fitted in the grooves 84, 84... When the impact hammers 64, 64... are fitted, a bend stress is generated at corner parts 87, 87... of bottom parts 86, 86... of the grooves 84, 84..., and a concrete layer 23 above the bottoms 86, 86... of the grooves 84, 84... are peeled by means of the bending stress. This constitution enables chipping of the concrete floor 22 at a specified depth with high efficiency.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete chipping device, and more particularly to a concrete chipping device for hanging a floor of a concrete building.

[0002]

2. Description of the Related Art In a concrete building, a mortar is applied to a floor surface on which concrete is placed to make the floor surface horizontal and smooth. However, when the mortar is directly applied to the concrete floor surface after being solidified, the mortar layer is peeled off from the concrete surface because the mortar is not well compatible with the concrete surface. Therefore, the concrete floor surface is formed in a concavo-convex shape with a certain depth, and mortar is applied to the concavo-convex surface to improve the familiarity of the mortar with the concrete surface.

Conventionally, when a concrete floor surface is suspended, a super-hard hammer is attached to the tip of a cylinder rod that reciprocates by air pressure, and the concrete surface is hammered and crushed by this hammer.

[0004]

However, it takes a long time and a high degree of skill to hang the concrete floor surface to a certain depth by the conventional method of hung the concrete floor surface with a hammer. There is. The present invention has been made in view of the above circumstances, and an object thereof is to provide a concrete chipping device that can efficiently hang a concrete surface at a constant depth.

[0005]

In order to achieve the above-mentioned object, the present invention provides a plurality of traveling device-movable chipping device main bodies and a plurality of them on the surface of the concrete, which are arranged side by side at predetermined intervals on the chipping device body. A plurality of disc-shaped cutter members that cut the grooves in parallel, and a plurality of grooves cut by the cutter members provided at the rear of the cutter member with respect to the traveling direction of the main body And a plurality of air hammer members having a substantially wedge-shaped tip that are fitted into the groove by being installed side by side and operated.

[0006]

According to the present invention, a plurality of cutter members cut the concrete surface to form a plurality of grooves in parallel with each other while moving the main body of the lifting device along the placed concrete floor surface. Then, the air hammer member is strikingly fitted into the groove at the timing when the groove formed by the cutter member is positioned below the air hammer member by the movement of the main body of the lifting device. When the hammer member is impact-fitted, a bending stress is generated at the corner of the bottom of the groove, and the bending stress causes the concrete layer above to peel off from the bottom of the groove. As a result, the concrete surface can be efficiently hung at a constant depth.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a concrete chipping device according to the present invention will be described in detail below with reference to the accompanying drawings.
FIG. 1 shows a side view of a concrete chipping device 10 according to the present invention, and FIG. 2 shows a top view of the chipping device 10.

A pair of front wheels 14A, 1A are provided on the body 12 of the lifting device 10 in the traveling direction of the lifting device 10.
4B, a cutter mechanism 16, a hammer mechanism 18, and a pair of rear wheels 20A, 20B are arranged. Of the front and rear wheels 14A, 14B, 20A, 20B, the right wheel 14
A and 20A are abutted on the concrete floor surface 22 cast as shown in FIG. Also, the right wheels 14A, 20A
Is rotatably attached to the wheel holders 24A and 26A, and a hydraulic cylinder 32 is attached via cylinder rods 28A and 30A fixed to the wheel holders 24A and 26A.
A, 34A. The hydraulic cylinders 32A, 3
4A is attached to the inner side surface 12a of the body 12. Therefore, the horizontal positions of the right wheels 14A and 20A with respect to the concrete floor surface 22 can be adjusted by expanding and contracting the cylinder rods 28A and 30A with the hydraulic cylinders 32A and 34A.

The left wheels 14B and 20B are mounted on a rail 36 shown in FIG. 2 laid on the concrete floor surface 22. Further, the rear wheels 14B and 20B can transmit the rotational driving force from the drive motors 38 and 40 attached to the body 12. Therefore, the drive motor 38,
By driving 40, the suspension device 10 can travel along the rail 36 in the traveling direction.

As shown in FIG. 2, the cutter mechanism 16 has an arm shaft 42, a pair of arms 44, 44, concrete disk cutters 46, 46 ... And a cutter motor 48. The arm shaft 42 is arranged between the inner side surfaces 12 a of the body 12 in a direction orthogonal to the traveling direction of the suspension device 10. The arms 44, 4
4 is arranged in a direction orthogonal to the arm shaft 42,
Left ends 44a, 44a of the arms 44, 44 are swingably attached to both sides of the arm shaft 42. A rotary shaft 50 is rotatably disposed between the right ends 44b and 44b of the arms 44 and 44.

The rotating shaft 50 is arranged in a direction orthogonal to the traveling direction of the harvesting device 10, and the six concrete disk cutters 46, 46 ... In the axial direction thereof.
Are fixed at regular intervals via spacers 52, 52 ... The concrete disc cutters 46, 46 ... Are arranged in parallel to the traveling direction of the harvesting apparatus 10. Further, a sprocket (not shown) is fixed to an end portion (upper end portion in FIG. 2) of the rotary shaft 50, and this sprocket is connected to the sprocket (not shown) of the cutter motor 48 via the chain 54. Therefore, when the cutter motor 48 is driven, its rotational force is transmitted to the rotary shaft 50 via the chain 54, so that the concrete disk cutters 46, 46 ... Can be rotated.

Cylinder rods 60, 60 of hydraulic cylinders 58, 58 are connected to the middle portions of the arms 44, 44 via link members 56, 56 shown in FIG. By expanding and contracting, the arms 44, 44 can be swung in the arrow direction in FIG. 1 with the arm shaft 42 as a fulcrum. Thereby, the concrete disc cutters 46, 46 ...
The cutting depth H of the concrete floor surface 22 can be adjusted.

The hammer mechanism 18, as shown in FIG.
It is composed of six air hammer devices 62, 62 ... These air hammer devices 62, 62 ... Are arranged side by side in a direction orthogonal to the traveling direction of the suspension device 10,
Wedge-shaped impact taper hammers 64, 64, ... Shown in FIGS. These impact taper hammers 64, 64 ...
are arranged at the same intervals as the fixed intervals of the concrete disk cutters 46, 46 ... And at the positions facing the concrete disk cutters 46, 46.

The impact taper hammer 64 is fixed to the lower end of the cylinder rod 68 of the air cylinder 66, as shown in FIG. The cylinder rod 68 is urged downward in the drawing by the urging force of a spring 70 arranged in the air cylinder 66. The flange portion 69 formed at the upper end of the cylinder rod 68 has a cylinder rod 6
An O-ring 72 is attached so that 8 slides smoothly on the inner peripheral surface 66a of the cylinder 66. Further, a stopper member 74 for restricting the extension amount of the cylinder rod 68 is fixed to the inner peripheral surface 66a of the cylinder 66.

A duct 76 communicating with the inside of the cylinder 66 is connected to the lower peripheral surface of the cylinder 66. Air valves 78 and 80 are attached to the duct 76.
The air valve 78 is connected to a pressurized air supply device (not shown) via an air hose 82, and the air valve 78 is opened to supply pressurized air from the pressurized air supply device to the cylinder 66.
By supplying the air to the inside, the cylinder rod 68 can be raised (contracted) against the biasing force of the spring 70 by the pressure of the pressurized air. Further, the air valve 80 is opened to allow the pressurized air in the cylinder 66 to escape to the atmosphere. As a result, the cylinder rod 68 can be lowered (extended) by the urging force of the spring 70.

Next, the operation of the concrete chipping device 10 constructed as described above will be described. First, while moving the main body 12 of the hanging device 10 along the rail 36 laid on the concrete floor surface 22,
The concrete disk cutters 46, 46 ... Are rotated by the cutter motor 48 to cut the concrete floor surface 22, and the concrete floor surface 22 is provided with a plurality of grooves 84, 84 ...
Are formed in parallel. The depth of the grooves 84, 84 ... Can be adjusted by the cutting depth H of the concrete disc cutter 46, and the depth is constant.

Next, the impact taper hammer 6 of the air hammer device 62 is set at the timing when the grooves 84, 84 ... Are positioned below the hammer mechanism 18 by the traveling movement of the body 12.
4, 64 ... Are fitted into the grooves 84, 84 ... by striking as shown in FIG. That is, the air hammer device 62 shown in FIG.
After the compressed air is supplied to the cylinder 66 by opening the air valve 78 to contract the cylinder rod 68, the compressed air in the cylinder 66 is released to the atmosphere by opening the air valve 80. As a result, the cylinder rod 68 is extended by the urging force of the spring 70, and the impact taper hammer 6
The cutting edge 64a of No. 4 is fitted into the groove 84 by striking.

When the impact taper hammers 64, 64 ... Are fitted, the impact causes bending stress in the corner portions 87, 87 ... Of the bottom portions 86, 86.
The bending stress causes the bottom portion 8 of the grooves 84, 84 ...
The boundary surface 88 is the concrete layer 23 above 6, 86 ...
It comes off. As a result, in this embodiment, the grooves 84, 84 cut by the concrete disk cutters 46, 46 ...
Since the impact taper hammers 64, 64 ... Are hit and fitted into the ..., The concrete floor surface 22 can be efficiently hung at the substantially cut depth H of the impact taper hammer 64.

[0019]

As described above, according to the concrete chipping apparatus of the present invention, while moving the chipping apparatus main body along the concrete floor surface, a plurality of disc-shaped cutter members are used to cut the concrete floor surface. A plurality of grooves are formed in parallel on the surface, and at the timing when the grooves are positioned below the air hammer member, a plurality of substantially wedge-shaped hammer members at the tip are impact fitted into the grooves to peel the concrete layer above from the bottom of the grooves. By doing so, the concrete surface can be efficiently hung at a certain depth.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a concrete chipping device according to the present invention.

FIG. 2 is a top view of FIG.

FIG. 3 is a sectional view showing an embodiment of an air hammer device applied to a concrete chipping device according to the present invention.

FIG. 4 is an explanatory view showing a state in which the impact taper hammer of the concrete chipping device according to the present invention is projected into the groove.

[Explanation of symbols]

 10 ... Happing device 16 ... Cutter mechanism 18 ... Hammer mechanism 22 ... Concrete floor surface 36 ... Rail 46 ... Concrete disk cutter 48 ... Cutter motor 50 ... Rotary shaft 52 ... Spacer 62 ... Air hammer device 64 ... Impact taper hammer 66 ... Air cylinder 68 … Cylinder rod 78,80… Air valve

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yusuke Ishikawa 1-1-14 Kanda, Uchida, Chiyoda-ku, Tokyo Hiratsugi Plant Construction Co., Ltd.

Claims (1)

[Claims] 1. A traveling device main body that is movable, and a plurality of disk-shaped cutter members that are arranged in parallel on the main body of the suspension device at predetermined intervals and that rotate to cut a plurality of grooves in parallel on a concrete surface. , Is provided in the rear of the cutter member with respect to the traveling direction of the main body of the lifting device, is installed in the main body of the lifting device, and is installed side by side in a position corresponding to a plurality of grooves cut by the cutter member to be actuated in the groove. A concrete chipping device comprising: a plurality of substantially wedge-shaped air hammer members to be fitted.