JPS6223953Y2 - - Google Patents

Description

[Detailed explanation of the invention] <Industrial field of application> This invention is a method for applying mortar materials containing a high viscosity resin binder or coating materials such as cement concrete and mortar that have an advanced setting and hardening reaction to flooring. Concerning the rotating trowel used when painting the surface.

<Prior Art> In a conventional rotary trowel, a rotating shaft of a rotary drive device is connected to an end of a trowel plate, and the trowel plate rotates like a propeller.

<Problem that the invention aims to solve> Therefore, the speed of the trowel plate is faster at the part far from the rotating shaft than near the rotating shaft,
Even if the finish of the coating material is fine and good in areas far from the rotating shaft, the finish near the rotating shaft may be poor, or vice versa. I couldn't use it. In addition, if a conventional rotating trowel is used in one place for a long time, fine particle aggregates contained in the coating material will move out of the trajectory of the trowel plate due to the centrifugal force caused by the rotation and sliding of the trowel plate. Problems include problems such as uneven finishing of the surface, or even if the coating material is highly viscous, the centrifugal force of the trowel plate pushes it out of the trajectory of the trowel plate, causing the coating material on the bottom surface of the trowel plate to disappear. was occurring. Furthermore, in consideration of work safety, it became necessary to provide a protective fence to surround the trajectory of the trowel plate, making it impossible to use it in corners such as near walls.

This idea solves the above problems,
The rotational speed distribution of the trowel plate can be made uniform to improve the finished surface, and the fine particle aggregate contained in the coating material can be moved out of the trowel plate movement trajectory, or the trowel plate movement trajectory of high viscosity coating materials can be moved out of the trowel plate movement trajectory. It is an object of the present invention to provide a rotating trowel that can suppress the extrusion of the iron and further enable use in corners such as near walls.

<Means for solving the problem> The rotating iron according to this invention has a fixed coupling device whose upper part is parallel to the iron plate fixed to the upper surface of the iron plate, and a trowel operation is performed on the upper surface above the fixed coupling device. a board on which a part and a rotary drive device are arranged, a rotary shaft of the rotary drive device is inserted through the board and extended downward;
An eccentric shaft is connected to the lower end of the rotating shaft, and the lower end of the eccentric shaft is inserted into the fixed coupling and the upper part of the fixed coupling above the center of gravity of the iron plate, and further between the upper part of the fixed coupling and the board around the eccentric shaft. The above-mentioned problems are solved by interposing a plurality of connecting members each having an elastic body at an intermediate portion that connects and holds the fixed connector and the iron plate so as to be movable in parallel to the substrate.

<Operations and effects of the invention> In the rotating iron according to this invention, when the rotating shaft of the rotation drive device rotates, the lower end of the eccentric shaft connected to the lower end of the rotating shaft moves above the center of gravity of the fixed connector and the iron plate. The iron plate is fitted into the upper part of the fixed connector, and the fixed connector itself is connected and held to the board around the eccentric shaft by a plurality of predetermined connecting members, so that the iron plate is fixedly connected. Together with the tool, each part rotates in the same direction so as to make the same circular motion.

Therefore, when using the rotating trowel according to this invention, the trowel plate can be rotated so as to face the same direction on the coating surface. Unlike other methods, the rotational speed distribution of the trowel plate can be made uniform, resulting in a good finished surface, and the fine particle aggregate contained in the coating material can be moved out of the trowel plate movement trajectory, or high viscosity coating can be achieved. It is possible to prevent the material from being pushed out of the trajectory of the trowel plate's movement, and there is no need to install a protective fence, making it lightweight, making it possible to use it in corners such as walls. .

<Example> Hereinafter, an example of this invention will be described based on the illustrated example.

FIG. 1 is a perspective view showing a rotating iron according to an embodiment of the invention, FIG. FIG. 3 is a partially sectional front view.

The rotary trowel 1 of the embodiment has an upper portion 3a on the upper surface of the trowel plate 2.
The fixing connector 3 is fixed to the trowel plate 2 in a shape of an inverted letter "H" and is parallel to the trowel plate 2.
A base plate 11 is attached via connecting members 10 having elastic bodies such as flexible rubber at intermediate positions located at the four corners of the top surface of the trowel a, and a rotary drive device 5 such as an electric motor or prime mover is provided on the top surface of the base plate 11. Two pipes are fixed to the top surface of the base plate 11 so as to sandwich the rotary drive device 5 therebetween, forming the trowel operation unit 4. The trowel operation unit 4 is provided with an operation switch for the rotary drive device 5 (not shown).

A rotary shaft 6 of the rotary drive device 5 passes through the substrate 11, and an eccentric shaft 7 is connected to the lower end thereof. The lower end of the eccentric shaft 7 is inserted into a relief bearing 8 fixed to the fixed connector upper part 3a via a cover 9. Further, the lower end of the eccentric shaft 7 is provided so as to be located above the center of gravity of the fixed connector 3 and the iron plate 2.

Therefore, the rotary shaft 6 of the rotary drive device 5
When the rotating shaft 6 rotates, the eccentric shaft 7 is connected to the lower end of the rotating shaft 6, and the eccentric shaft 7
The lower end of is inserted into the fixed connector upper part 3a, and
The fixed connector 3 is attached to the upper part 3a around the eccentric shaft 7.
Since the iron plate 2 is connected and held by the connecting members 10 to the base plate 11 at the four corners of the iron plate 2, the center of gravity M or all four corners of the iron plate 2 move in the same circular motion as shown in FIG. 2 can be rotated on the coating surface facing in the same direction.

In this way, the rotating iron 1 of the embodiment has the iron plate 2
Since the trowel plate 2 can be rotated facing the same direction, the rotational speed of the trowel plate 2 is the same at all locations, and the surface of the coating material can be uniformly and well-finished during use. In addition, since the trowel plate does not rotate like a propeller as in conventional rotating trowels, the centrifugal force of the trowel plate is suppressed, and the fine particle aggregate contained in the coating material is moved out of the trowel plate movement trajectory. Alternatively, it is possible to suppress a high viscosity coating material from being pushed out of the movement trajectory of the iron plate. Furthermore, unlike conventional rotating trowels, the trowel plate does not rotate like a propeller, so there is no need to install a protective fence, making it lighter and allowing it to be used in corners such as walls. be able to.

Furthermore, the radius of the rotational movement of the trowel plate 2 can be adjusted by the eccentric distance of the eccentric shaft 7, and by replacing the eccentric shaft with an eccentric shaft having a different eccentric distance, the rotational movement of the trowel plate 2 can be adjusted to suit the coating material. can be obtained.

In addition, in the rotary trowel 1 of the embodiment, a connecting member 10 whose intermediate portion is made of rubber or the like is interposed between the fixed connector upper part 3a and the substrate 11 at the four corners of the upper surface, so that the trowel can be used during coating work. The plate 2 can apply appropriate surface pressure to the coating material, and a better finished surface can be obtained.

In addition, the ball bearing 8 through which the lower end of the eccentric shaft 7 of the embodiment is inserted is provided for the purpose of preventing wear of the eccentric shaft 7 and the connector 3 when the eccentric shaft 7 rotates, and the ball bearing 8 is provided with the purpose of preventing wear of the eccentric shaft 7 and the connector 3 when the eccentric shaft 7 rotates. No ball bearings are required.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a rotating iron according to an embodiment of this invention, Fig. 2 is an explanatory view showing the movement of the iron plate of the same embodiment, and Fig. 3 is a partial cross section of the rotating iron according to the same embodiment. It is a front view. DESCRIPTION OF SYMBOLS 1... Rotating iron, 2... Trowel plate, 3... Fixed connector, 3a... Upper part, 4... Trowel operating section, 5...
Rotary drive device, 6...Rotary shaft, 7...Eccentric shaft, 11...Substrate.

Claims (1)

[Scope of utility model registration request] A fixed connector whose upper part is parallel to the iron plate is fixed to the upper surface of the iron plate, and a board having a trowel operating section and a rotational drive device disposed on the upper surface is disposed above the fixed connector. A rotary shaft of the rotary drive device extends downward through the substrate, and an eccentric shaft is connected to the lower end of the rotary shaft, and the lower end of the eccentric shaft is connected to the upper part of the fixed connector above the center of gravity of the fixed connector and the trowel plate. and an elastic body at an intermediate portion that connects and holds the fixed connector and the trowel plate so as to be movable in parallel with the base plate between the upper part of the fixed connector around the eccentric shaft and the base plate. A rotating iron having a structure in which a plurality of connecting members are interposed.