JP2546012Y2 - Rotating trowel - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a rotating iron for leveling a concrete surface.

[0002]

2. Description of the Related Art A rotating iron used for the purpose of, for example, pressing and leveling the concrete surface immediately after casting to eliminate air bubbles trapped in the concrete is disclosed in Japanese Utility Model Publication No. Sho 62-62.
No. 3,386,631. The idea discloses a rotating iron composed of a leveling machine main body and a rotating disk that can be attached to and detached from the rotating iron, but since a rotating disk is only prepared as a member for performing leveling, the type of work that can be performed is limited. Was limited.

[0003]

[Problems to be Solved by the Invention] The present invention has been made in view of the above points, and the problem is that the rotating blades can be easily fixed with pins so that various operations can be performed by various rotating blades. It is to be able to be attached and detached.

[0004]

According to the present invention, a mounting arm 13 for mounting a rotary blade 12 on a rotary iron is mounted on a rotary portion of a rotary power source 11 in a radial direction around the rotary arm. Multiple mounting, mounting arm 1
3 is attached to the rotating blade 12
And through holes 15 and 16 that match with the mounting arm 13 and the mounting rod 14 in parallel contact with each other.
Alternatively, a pin 17 formed at two or more places and inserted into both through holes 15 and 16, one end of which is pivotally supported by the head of the pin 17 itself, and
An end of the connecting member 19 is formed by a stopper 18 formed at the tip of the pin 17 so as to be latchable.
Means for attaching the rotating blade 12 by means of the above.

[0005]

FIG. 1 shows the entire configuration of a rotary iron according to the present invention, in which an internal combustion engine is used as a rotary power source 11 and mounted on a frame 10. A rotating part 20 that rotates around a vertical axis with a driving force taken out of a rotating power source 11
Is set downward, and a plurality of mounting arms 13 are radially attached to the rotating portion 20 at equal intervals, that is, around the rotating portion 20.
Provided in the radial direction . The rotating part 20 is provided on the output shaft or the reduction gear shaft of the engine.

The number of mounting arms 13 is three or more (four in the illustrated example).
This has a structure in which a main arm 13a attached to the rotating member 20 and an engaging arm 13b attached thereto are combined (see FIG. 3). 13c is a support arm, which supports the main arm 13a at the base. The lower surface 21 of the main arm 13a and the upper surface 22 of the engagement arm 13b are a fastening surface of the two arms 13a and 13b which are joined and integrated by a bolt 23. The engaging arm 13b has a substantially gate-shaped cross-sectional shape provided with a downward groove-shaped engaging portion 24.

The rotating blade 12 is a member for performing a leveling operation by contacting the concrete surface with a predetermined surface pressure, and is a plate-like member having a substantially rectangular planar shape longer in the radial direction than the rotating direction. is there. 12 'is a bent piece,
The leading edge in the rotating direction of the rotating blade 12 and the radial direction,
Both outer edges are slightly bent. Rotating blade 12
A mounting rod 14 is integrally attached to the upper surface of the.
Reference numeral 25 denotes the stopper. The illustrated rod 14 is the rotating blade 1
2 is provided in the radial direction near the front edge of the engagement arm 1 described above.
3b is formed in a cross-sectional shape just fitted to the engaging portion 24 (FIG. 4). The mounting rod 14 and the engagement arm 13b have substantially the same length, and the engagement arm 13b fits over the entire length without play.

[0008] Through holes 15 and 16 are formed in the mounting arm 13 and the mounting rod 14 for coupling thereto.
The two through holes 15 and 16 are provided at two locations on the inner and outer ends in the radial direction, respectively, in the direction of rotation, and the coupling member 19 is attached thereto. The coupling member 19 includes a pin 17 inserted into the through holes 15 and 16, and a stopper 18 engaged with the head and the tip of the pin 17. The illustrated stopper is a spring wire bent in a U-shape or a gate so as to bypass the mounting arm 13, and is rotatably supported at one end by a hole 26 in the pin head. The end is a ring
It becomes Jo unit 27 Ru Oh be locked to the pin tip. In the figure, reference numeral 28 denotes a handle provided with an operation element 29 for operating the apparatus.

In order to use the rotary iron according to the present invention, the rotary power source 11 is started, the rotary blade 12 is rotated, and the concrete surface is cast on the lower surface of the blade 12. You should do it. The plurality of rotating blades 12 rotate to form a disk-shaped rotating surface, and the rotating surface receives the weight of the rotating iron and presses against the concrete surface. It is the same as the conventional one that the frame 10 is tilted by the operation of the handle 29 to move in the desired direction while moving in the desired direction.

The rotating blade 12 used for the leveling operation is provided with three types, a finish blade, a combination blade and a float blade, and can be appropriately replaced and used. Each blade has a rotating blade body integrally provided with a mounting rod 14 and has several sizes, but the position and the diameter of the through hole 16 are common.

[0011]

[Effect of the invention] The present invention is constituted as described above and since it is intended to act, disconnecting the pin 17 of the coupling member 19
The rotating blade 12 can be attached and detached with one touch, and the pin 17 is attached to itself.
The rotation blade 1
Since mounting 2 securely, any time replace the type of rotary blade 12 in accordance with the work, an effect that best leveling work smoothly, it is possible to quickly implement.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a rotating iron according to the present invention.

FIG. 2 is an enlarged front view of the blade.

FIG. 3 is an exploded perspective view of a blade attachment portion.

FIG. 4 is an enlarged sectional view of a main part.

Claims (2)

(57) [Scope of request for utility model registration] 1. A rotary iron for leveling a concrete surface by a rotary blade 12 driven by a rotary power source 11, wherein a mounting arm 13 for mounting the rotary blade 12 is provided on a rotary portion of the rotary power source 11. A plurality of mounting rods 14 are attached in the radial direction around
And through holes 15 and 16 that match with the mounting arm 13 and the mounting rod 14 in parallel contact with each other.
Alternatively, a pin 17 formed at two or more places and inserted into both through holes 15 and 16, one end of which is pivotally supported by the head of the pin 17 itself, and
An end of the connecting member 19 is formed by a stopper 18 formed at the tip of the pin 17 so as to be latchable.
A rotating iron, wherein the rotating blades 12 are attached by the method. 2. Various types of rotating blades 12 having different shapes are prepared. Each of the various blades has a mounting rod 14 integrally on its upper surface, and is optionally attached to the mounting arm 13 by a connecting member 19. 2. The rotating iron according to claim 1, wherein the rotating iron is attached to and replaced.