JPH045286Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to an end presser roller of a column forming form in an endless belt type centrifugal force column making machine.

(Prior Art) Generally, cylindrical concrete products such as concrete piles are mechanically formed using a centrifugal force column forming machine.

Conventionally, this type of centrifugal force column forming machine has been constructed by placing a belt between pulleys that can rotate at high speed, placing the column forming form horizontally on this belt, and then rotating the pulleys at high speed to rotate the belt at high speed. An endless belt type centrifugal force column forming machine is known, which has a configuration in which high-speed rotation is applied to the column forming form, thereby centrifugally forming concrete within the column forming form.

This type of endless belt type centrifugal force column forming machine has a drawback that during operation, the column forming form rotates at high speed and gradually moves laterally in its longitudinal direction.

For this reason, conventionally, in order to prevent this type of lateral movement, end holding blocks are attached in contact with both end surfaces of the column forming form to suppress the lateral movement of the column forming form due to high speed rotation.

(Problem that the invention attempts to solve) However, with this configuration, the friction between the column forming form and the holding block is extremely large, so the noise is extremely loud during the high speed rotation of the column forming form. The large amount of friction between the presser block and the column formwork considerably suppressed the rotational force of the column formwork, resulting in an extremely large loss of energy (power).

Furthermore, the presser block was severely worn out, and it was necessary to replace the presser block within a very short period of time.

This invention was proposed in order to solve the above-mentioned conventional problems, and it is due to the large distance between the column forming form and the end holding block of this column forming form during operation of the endless belt type centrifugal force column making machine. An object of the present invention is to provide an end press roller for a column forming form in an endless belt type centrifugal force column forming machine that can eliminate noise and energy (power) loss due to grinding.

(Means for Solving the Problem) This invention is attached to the lower end of the end of the column forming frame placed on the endless centrifugal force column forming machine, and is attached rotatably around the vertical axis. The above object is achieved by forming it into a truncated conical shape that tapers toward the upper end.

(Example) Hereinafter, this invention will be explained using an example illustrating the invention. Figures 5 and 6 show an example of an endless belt type centrifugal force column making machine, and the configuration thereof will be explained below. do.

Main pulleys 1 and 2 have the same diameter, and are one size smaller than main pulleys 1 and 2 (main pulleys 1 and 2 have a diameter of 70~
(approximately 80%) Sub-pulleys 3 are installed at regular intervals in the diametrical direction of these pulleys.

The main pulleys 1 are attached to the shaft 4 at regular intervals in its longitudinal direction. When the shaft 4 is rotated at a high speed by the power of a motor or the like, the main pulley 1 can be rotated at a high speed.

The main pulley 2 and the sub pulley 3 are arranged right side by side with the main pulley 1, and similarly to the main pulley 1, they are installed at regular intervals in the longitudinal direction of the shaft 4.

Further, the main pulley 2 and the sub pulley 3 are attached to a bracket, and the distance between the main pulley 2 and the sub pulley 3 can be freely adjusted by shifting the fixed position of the bracket in the horizontal direction of the sub pulley 3. is considered possible.

One flat belt 9 is placed between each of the main pulleys 1 and 2 and the sub pulley 3.

In such a configuration, when the main pulley 1 is rotated at high speed by the power of a motor or the like via the shaft 4,
The flat belt 9 rotates at high speed while maintaining a stable shape between the main pulleys 1 and 2 and the sub pulley 3.

Furthermore, when the column forming form 10 is placed horizontally on the flat belt 9 in advance, the column forming form 10 rotates at high speed due to the high speed rotation on the flat belt, so that the concrete in the column forming form 10 is Can be centrifugally molded.

End presser rollers 11, 11 according to this invention are attached to the endless belt type centrifugal force column making machine constructed in this way (see FIGS. 1, 2 and 3). The end pressing roller 11 is formed into a truncated conical shape tapering toward the upper end, and is mounted in the roller stand 12 so as to be freely rotatable about a vertical shaft 13.

Both upper and lower ends of the vertical shaft 13 are fixed to mounting holes 16 of the roller stand 12 via rubber bushings 14 and bearings 15.

The roller stands 12 are located at both ends of the column forming frame 10 and bolted to the endless belt type centrifugal force column forming machine. The end press rollers 11, 11 are in contact with the column forming form 10 at one point at the lower end of both ends.

With such a configuration, it is possible to prevent lateral movement of the column forming form 10 due to high-speed rotation.

The position of the end presser roller 11 can be freely moved in the front and back direction by changing the fixing position of the roller stand 12, and the structure can be freely adapted to various column forming forms with different lengths. It's getting old.

(Effects of the invention) This invention consists of the above configuration and has the following effects.

The end presser roller, which is used to prevent horizontal movement of the column formwork due to high-speed rotation, is formed into a truncated conical shape that tapers toward the upper end, and is mounted so as to be rotatable about a vertical axis. Therefore, it touches both ends of the column formwork at one point. Therefore, abrasion between the end presser roller and the column forming form is extremely reduced, so that noise and energy (power) loss during high speed rotation of the column forming form can be largely eliminated. Furthermore, since the end presser roller has extremely little wear, the end presser roller can be used semi-permanently, making it extremely economical.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of the end press roller of this invention, with Figure 1 being an exploded perspective view, Figures 2 and 3 being longitudinal sectional views, and Figure 4 being an exploded perspective view of the roller. is an explanatory diagram, Figures 5 and 6 show an example of an endless belt type centrifugal force column forming machine, and Figure 5 is a side view of the machine.
FIG. 6 is a plan view. 1, 2...Main pulley, 3...Sub-pulley, 4...
Shaft, 9...Flat belt, 10...Column formwork,
11... End press roller, 12... Roller stand, 13... Vertical shaft, 14... Rubber button, 15
...Bearing, 16...hole.

Claims (1)

[Scope of utility model registration request] A truncated conical shape that is attached to the lower end of the end of the column forming frame placed on an endless belt type centrifugal force column forming machine, is rotatably attached around a vertical axis, and tapers toward the upper end. An end pressing roller of a column forming form in an endless belt type centrifugal force column forming machine, characterized in that it is formed as follows.