JPS6020165B2 - Centrifugal concrete column forming machine - Google Patents

Description

[Detailed Description of the Invention] When manufacturing concrete columns, such as concrete piles, poles, concrete pipes, etc., a plurality of drive shafts each having a plurality of fixed drive wheels are installed in parallel, and each drive shaft is rotated alternately in opposite directions. A cylindrical formwork with fixed tires is placed on the drive wheels of the two drive shafts of the molding machine, which is rotated by the molding machine, and the formwork is rotated by contact between the drive wheels and the tires, and This is formed by compacting concrete using centrifugal force.

In order to mass produce the above manufacturing method using assembly line operations,
A large number of drive shafts are installed in parallel on the molding machine so that multiple molds can operate simultaneously, and a lifting device such as a crane is used to load, unload, and transport the molds onto the molding machine. However, installing an elevating and descending transport device on the floor requires the installation of parallel drive shafts, and the equipment and operation of cranes and other lifting devices are difficult. There are drawbacks and safety issues at work sites.

The purpose of this invention is to improve efficiency by increasing efficiency and reducing equipment costs for continuous mass production. A part of the drive wheel is used as a driven wheel, and the shaft between the drive wheel and the driven wheel is separated, the shaft between them is omitted, and a space of a fish shaft is formed between the drive shaft and the driven wheel Fuji, and the driven wheel is rotated through the formwork. By doing so, it is possible to securely support the formwork and secure the space necessary for raising and lowering the formwork and transporting it without interfering with its rotation.An example of this is shown below in detail in the attached drawings. Explain.

The drawing shows the simplest example in which two formworks are hung, and drive shafts 3a, 3b, 3 are connected by bearings 2 on a fixed support 1 on the floor.
c are arranged in parallel, and each drive shaft has two drive theory 4.
a, 4b, 4c are fixed, and the drive shafts 3a, 3b. 3c are driven to alternately rotate in opposite directions. The drive shafts 7a, 7b, 7a, 7b, 7a, 7b, 7a, 7b, 7a, 7b, 7a, 7b, 7a, 7b, 7a, 7b,
7c is supported by a bearing 8, and coaxially driven wheels 9a, 9b,
9c, drive shafts 3a, 3b, 3c and driven wheels 7a,
An axisless space is formed between 7b and 7c.

In addition, in the figure, 10' is a cylindrical form made of steel plate, 11 is a predetermined number of tires fixed to the same form, and 2 tires are parallel to each other.
The drive shaft and driven wheel of the book are rotated in contact with the drive wheel and the driven wheel of the shaft.

For example, a cart 12 that can move in a direction perpendicular to the axis is provided on the floor surface of the above space, and a plurality of mold holders capable of supporting twice the number of molds on the molding machine are installed in the direction of the truck. 13 are arranged in parallel in a vertically movable manner.

In this elevating and lowering conveyance device, the first half of the mold holder 13 is located below the molding machine, and the second half is in front of the molding machine, and the number of molds required for the next molding is placed on the mold holder 13 in front of the molding machine. The molds 10 are arranged at predetermined intervals and kept on standby, and when the centrifugal force forming by the molds 10 on the molding machine is finished, the mold holder 13 is raised, and the molded molds 10 are transferred to the mold frame 13. let

At the same time, the standby formwork 10 placed in the latter half of the mold cradle also rises, so the cart 12 is advanced, the above-mentioned standby formwork 10 is moved above the molding machine, and the mold pedestal 12 is lowered to raise the formwork 10. Transfer it to the molding machine and immediately start molding.

Molded formwork 1 moved outside the molding machine during this molding operation
Kawama, the cart 12 is moved to the next process and the formwork 10 is removed.
is moved back and the next molding frame 10 is placed on the mold holder 12 which has returned to the front of the molding machine.

In this way, the molding machine can be operated continuously, and the molds that have been molded can be processed and the molds for the next molding can be prepared during the molding operation, so that the work efficiency is significantly improved.

As described above, according to the present invention, the drive shafts 3a, 3b, 3c and the driven wheels 7a. 7b, 7c
The formwork 10 is separated by a space without supports, bearings, or other equipment, and the formwork 10 is rotated in contact with two driving wheels rotating in opposite directions, and the driven wheels support the formwork on the fixed layer. Rotates according to the formwork.

In reality, the formwork is made of steel plates, etc., and has sufficient strength so that there is no risk of distortion due to centrifugal force.
It has been confirmed through experiments that there is no problem even if there is a considerable distance between the driving wheels and the driven wheels. In this way, the drive side and the driven wheel side are separated, and the space created by omitting the intermediate space and bearings allows the formwork conveyance device, which can be moved during the molding process, to be kept free of any obstructions. It is easy to install, enables continuous operation of the molding machine, dramatically improves production efficiency, saves on support shafts and bearing materials, and indirectly simplifies transportation equipment, reducing the need for equipment, etc. It is also effective.

It should be noted that the number of driving wheels and driven wheels on the same axis in the above embodiment can be freely increased or decreased depending on the length of the column to be manufactured, etc., and the conveyor hawk is only explained as an example, and various shapes can be used. It can be freely selected and installed.

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the invention, and FIG. 1 is a plan view, FIG. 2 is a front view, and FIG. 3 is a side view.

3a, 3b, 3c... Drive shaft, 4a, 4b, 4c.
... Drive wheel, 7a, 7b, 7c... Driven wheel axle, 9a, 9b, 9c... Driven wheel, 10...
・Formwork.

Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] 1. A drive shaft on which a driving wheel for rolling the formwork is fixed and a driven wheel rotatably supporting a part of the formwork and rolling thereon are connected to the same drive shaft with an appropriate non-shaft interval. A mold receiving device that is arranged on an axis, has a plurality of the driving shafts and driven wheel shafts arranged in parallel, and can receive molds twice the number of molds on the shaftless portions of the driving shafts and driven wheel shafts, and can move up and down. 1. A centrifugal force concrete column forming machine, characterized in that a cart having a wheel can be moved forward and backward at right angles to the axial direction.