JP2011230497A - Ready-mixed concrete leveling device with rotary trowel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simple leveling device in relation to a ready-mixed concrete leveling technology.SOLUTION: A rotation power source (2) is installed to the rear end of a support pole (1). A rotation transfer body (4) is installed at the front end of the support pole. A rotational long shaft (3) is made to pass through the inside of the support pole. A support handle (7) and a shoulder band (8) are arranged in suitable positions of the support pole (1). A guide cover (10) is fixed to the rotation transfer body. A rotary trowel assembly (12) constituted of a rotational trowel (13) and a rotational stay (14) is fastened with a locking nut (15) to be fixed to the rotation transfer body. Alternatively, when the rotary trowel assembly (12) is constituted to be attached removably to a conventional shoulder-type mower after removing a mowing rotary blade assembly attached to it, the conventional shoulder-type mower can be used as a leveling device.

Description

  The present invention relates to a finishing technique for leveling a surface of a ready-mixed concrete with a trowel when the concrete is placed.

  Recently, it has become a society with many elderly people, but the same is true for ordinary craftsmen. However, the leveling work of ready-mixed foods has long been bent and hand-finished by hand. On the other hand, leveling work is carried out with engine-type dedicated machines that are used by general contractors.

Currently, working with an engine-type dedicated machine is very efficient, and there is no burden on the body due to work labor, but it is easy, but the price of the leveling machine is high, so ordinary craftsmen Purchasing and using does not match the unit price. In the open gazette, there are patent registration, 4452514, mechanical pitch control, Japanese Utility Model Laid-open No. 5-57198, rotary iron, Japanese Patent Application Laid-Open No. 2005-172227, starter module for hand guide type iron, and the like. Since the rotational power of the engine or the like is on the side of the rotating trowel, it is heavy and difficult to handle, and since various control mechanisms are complicated, there are also disadvantages that are difficult to handle.
The present invention has been made to solve these problems.

The present invention is as simple as possible. Hereinafter, the solution means configuration will be described. First, a rotational power source (2) such as a small engine or a small motor is provided at the rear end of the support pole (1). A rotation transmission body (4) composed of a gear A (5) and a gear B (6) is assembled and provided at the tip of the pole. Then, the long shaft (3) is provided inside the support pole (1), which is a pipe, and the rear end of the long shaft (3) is directly connected to the rotational power source (2). On the other hand, a bearing A (16) is provided at an appropriate position before the tip of the long shaft, and the tip of the long shaft is provided by directly connecting the gear A (5) of the rotation transmission body (4). Further, a support handle (7) and a shoulder band (8) are provided at appropriate positions of the support pole (1). Further, a guide cover (10) is fixed to the rotation transmission body (4), and a bearing bearing B (17) is provided on the screw bolt shaft (11) directly connected to the gear B (6) of the transmission body. Next, the rotary iron assembly (12) constituted by the rotary iron (13) and the rotary stay (14) is screwed and provided. Finally, the locking nut (15) is fastened to the bolt shaft together with the rotary iron assembly (12) and fixed, and the rotary iron assembly (12) is mounted. In other words, if the locking nut (15) is loosened, the rotary iron assembly (12) can be removed and can be freely replaced. Further, the rotary blade assembly (12) according to the present invention may be detachably mounted on the rotary blade assembly of a simple shoulder-type mower that has been conventionally used.
The present invention is a raw leveling machine with a rotating iron having such a configuration and characteristics.

The present invention is a very effective iron finishing means for craftsmen, and it is only necessary to apply a trowel rotating on the surface of a raw component placed on the floor or the like while standing without standing down. .
In addition, with a simple structure and light weight, and with the shoulder rest as the center of gravity fulcrum, the power source is placed at the rear, so the average balance between the rotating iron part at the tip and the weight is good, and the rotating iron part can be handled with light and small force , You can show the craftsman's fine technology as it is. Furthermore, it is equivalent to a conventional shoulder-type mower, and it can be used as a leveling machine simply by replacing the tip with the rotary iron assembly (12) of the present invention.

This configuration can be easily handled by anyone, including old craftsmen, and is made as simple as possible in consideration of safety. First, a rotational power source (2) such as a small mini-engine or a small motor is provided by assembling the rear end of the support pole (1) that supports the main body. In addition, a rotation transmission body (4) composed of a gear A (5) and a gear B (6) is assembled and provided at the forefront of the pole. Then, the rotating long shaft (3) is provided in the hollow interior of the support pole (1) formed of a hollow pipe or the like. The rear end of the rotary long shaft (3) is directly connected to the rotary power source (2). On the other hand, a bearing A (16) is press-fitted and fixed at an appropriate position before the tip of the long shaft. Further, the leading edge of the long axis is provided directly connected to the gear A (5) of the rotation transmission body (4). Further, a support handle (7) and a shoulder band (8) are provided at an appropriate position of the support pole (1) (position near the center of gravity as a whole). Further, a guide cover (10) is fixedly provided on the rotation transmitting body (4) to protect the rotating iron from obstacles. Further, a bearing bearing B (17) is provided on the screw bolt shaft (11) directly connected to the transmission gear G (6). Next, a rotary iron assembly (12) composed of a rotary iron (13) and a rotary stay (14) is screwed and fixed, and finally a lock nut (15) is provided with the rotary iron assembly (12). At the same time, the rotary iron assembly (12) is mounted by being fastened and fixed to the bolt shaft. In other words, if the locking nut (15) is loosened, the rotary iron assembly (12) can be removed and can be freely replaced. In addition, the rotary cutter assembly (12) according to the present invention can be detachably mounted on a simple shoulder-type mower that has been used in the past, and the rotary cutter assembly (12) according to the present invention can be detachably mounted. good.
Further, when a sudden load is applied to the rotating iron, there is a possibility that the leveling operation may be troubled and the rotating iron assembly (12) may be damaged. As described above, a flexible shaft coupling (18) may be mounted between the guide cover (10) and the rotary stay (14) so as to absorb vibrations and impacts and be easily attached and detached.
The present invention has such a configuration and characteristics, and when the craftsman or the like is not using it,

The rotary power source (2) is moved, the main body is shouldered, the support handle (7) is held, and the rotating rotary iron assembly (12) is pressed against the surface of the cast concrete. As a craftsman who handles this machine, the tip of the iron can be moved very lightly while standing because of the weight balance between the rotary power source (2) at the rear end and the rotary iron assembly (12) at the front end. The skill of the iron can be greatly demonstrated. Moreover, when an emergency is required, such as when it breaks down, the rotary blade assembly at the tip of the conventional mower can be removed, and the rotary iron assembly (12) of this machine can be attached and used as a leveling machine. Therefore, it is really reasonable.
Even if a large load force is applied to the rotating iron assembly (12) and a torsion, impact, or vibration occurs, the type with the flexible shaft joint (18) installed and mounted absorbs these forces. , More stable leveling work can be performed.

  It is an implementation figure of the present invention.   It is an assembly perspective view of the rotating iron part of the present invention.   It is an explanation side view of the present invention.   It is the block diagram which made the front-end | tip part of this invention the cross section.   It is sectional drawing of the front-end | tip part which mounted | wore with the flexible shaft coupling of this invention.   It is explanatory drawing equipped with the flexible shaft coupling of this invention.   It is a perspective view of a flange type flexible shaft coupling used for the present invention.

DESCRIPTION OF SYMBOLS 1 Support pole 2 Rotation power source 3 Rotation long axis 4 Rotation transmission body 5 Gear A
6 Gear B
7 Support handle 8 Shoulder band 9 Ready-mixed concrete 10 Guide cover 11 Screw bolt shaft 12 Rotating iron assembly 13 Rotating iron 14 Rotating stay 15 Locking nut 16 Bearing bearing A
17 Bearing B
18 Deflection shaft coupling 19 Spring 20 Anti-vibration rubber bush 21 Vibration, impact, and twisting force

Claims (3)

Rotation transmission body (4), which is assembled to the rear end of the support pole (1), provided with a rotational power source (2), and composed of gear A (5) and gear B (6) at the tip of the pole Next, the rotating long shaft (3) is provided inside the pole and the rear end of the rotating long shaft (3) is directly connected to the rotational power source (2), while the tip of the long shaft is A bearing bearing A (16) is provided at an appropriate position in front, and the tip of the long shaft is provided by directly connecting the gear A (5) of the rotation transmission body (4). The support bolt (7) and the shoulder band (8) are provided at the position where the guide cover (10) is fixed to the rotation transmission body (4), and the screw bolt shaft is directly connected to the gear B (6) of the transmission body. (11) is provided with a bearing B (17), then a rotating iron (13) and a rotating The rotating iron assembly (12) constructed by the stay (14) is screwed in, and finally the locking nut (15) together with the rotating iron assembly (12) is fastened and fixed to the bolt shaft. This is a raw leveling machine with a rotating iron. A raw leveling machine with a rotating iron, wherein a rotary blade assembly (12) is detachably provided on a rotary cutting blade assembly attached to a conventional shoulder-type mower. 3. A rotating container with a rotating iron according to claim 1, wherein the flexible cover is provided with a flexible shaft coupling (18) between the guide cover (10) and the rotating stay (14). Leveling machine.

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