JPS61283507A - Method of kneading concrete material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for kneading concrete materials.

(Conventional technology) Conventionally, the rotation of the prime mover was transmitted to the concrete mixer,
While rotating the same concrete mixer.

Concrete materials such as water, cement, and aggregate are put into the concrete mixer and mixed.

(Problems to be Solved by the Invention) Conventionally, a concrete mixer has been rotated at a constant speed for a constant period of time regardless of the type of concrete material.
In the case of soft kneading, which requires a faster kneading speed, time was wasted and the efficiency of the second operation was lowered.

(Means and operations for solving the problems) The present invention deals with the above-mentioned problems, and when mixing concrete materials by rotating the concrete mixer with a prime mover, the concrete mixer, which is determined for each type of concrete, is The optimum rotation value per unit time is stored in the computer in advance, and when one of the product number signals set for each type of concrete is input to the computer, the optimum rotation value corresponding to the same product number is selected. The present invention relates to a method for mixing concrete materials characterized by outputting the mixed speed to a variable speed device for a prime mover of a concrete mixer, and its two objectives are to improve work efficiency. Another object of the present invention is to provide a method for kneading concrete materials that can produce high quality concrete.

In the present invention, when the concrete mixer is rotated by the prime mover to knead concrete materials as described above,
The optimal rotation value per unit time of the concrete mixer determined for each type of concrete is stored in advance in the computer, and when one of the type number signals set for each type of concrete is input to the computer, the same type number is set. The corresponding optimum rotational value is selected and outputted to the variable speed device for the prime mover of the concrete mixer, and the mixing of concrete materials is completed in the optimum minimum time for each type, improving work efficiency.

Also, since the concrete materials are quickly mixed without wasting time, high quality concrete is produced.

(Example) Next, the method for kneading concrete materials of the present invention will be explained using an example not shown in FIG. Once the type of concrete (strength of concrete) is determined.

Slump, maximum aggregate size, concrete material (gravel (G)
) ・Sand (S) ・Cement (C) ・Water (-)
etc.) will be determined. Also, the optimal mixing speed and mixing time vary depending on the type of concrete.

This can be obtained in advance through experiments (.In addition, the product number assigned to each product type and the optimum kneading speed and kneading time corresponding to each product number can be determined by computer (1) as shown in Figure 1.
). Next, as shown in DI in Figure 1, the loading amount for one ready-mixed concrete truck is calculated by the computer (DI) in Figure 1.
1) Enter. Then, the computer (1) automatically calculates the kneading amount and kneading time for one batch of mixer, and stores the calculation results. Note that when kneading is soft or the amount of kneading is small, the kneading time will be shorter. For example, the loading capacity for one fresh concrete truck is 4. In Od,
, when mixing with a 1.5 cal concrete mixer.

The amount of kneading for one batch of mixer x the number of times of kneading is [1°33
X2) 10 [l, 34Xl)=4. Becomes O.

In that case, the mixing time depends on the type of product, but it is the same for all three times, 1, for example, 35 (S). Also, if the loading capacity of one fresh concrete truck is 5.0 cnl, the mixing amount for one mixer hatch x the number of times of mixing is.

(1,25X4)=5.0, and the mixing time in that case depends on the two types, but is the same for all four times.

For example, it will be 30 (S). Also, the loading capacity for one ready-mixed concrete truck is 6. In the case of Oad, the amount of kneading for one batch of mixer x the number of times of kneading is (1,5 become S). Once the above data is in place, kneading begins. That is, the kneading speed signal (III
) is sent from the computer (1) to the variable speed device (2) of the prime mover that rotates the mixer, and the concrete material mixture value signal (■) is sent from the computer (1) to the concrete material mixture value adjustment device (3). , the kneading time signal (V) from the computer (1) to the timed switch adjustment device (4)
The kneading amount signal (Vl) is sent to the kneading amount adjusting device (5).
Concrete 1 mixer (6) starts kneading, and when the kneading is completed, it is taken out as a product (7). The mixer used in the above concrete material kneading method may be any one of a tilting mixer, a pan-type forced kneading mixer, a biaxial and -shaft forced kneading mixer, and the like.

(Effects of the Invention) As described above, when the concrete mixer is rotated by a prime mover to mix concrete materials, the present invention allows a computer to store in advance the optimum rotational value per unit time of the concrete mixer, which is determined for each type of concrete. Then, when one of the product number signals set for each type of concrete is input to the same computer, the optimum rotation value corresponding to the same product number is selected and output to the variable speed device for the concrete mixer prime mover. As a result, the mixing of concrete materials can be completed in the optimum minimum time for each type of concrete, improving the efficiency of one operation.

Furthermore, since the concrete materials are mixed quickly without wasting time, it is possible to produce high quality concrete.

Although the present invention has been described above with reference to embodiments, it goes without saying that the present invention is not limited to these embodiments, and can be modified in various ways without departing from the spirit of the present invention.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing an embodiment of the method for kneading concrete materials of the present invention. (1)...Computer, (2)...Variable speed device for prime mover, (6)...Concrete mixer.

Claims (1)

[Claims] When a concrete mixer is rotated by a prime mover to mix concrete materials, the optimum rotation value per unit time of the concrete mixer determined for each type of concrete is stored in advance in the computer, and the type number set for each type of concrete is stored in advance. A method for mixing concrete materials, characterized in that when one of the signals is input to the same computer, an optimum rotation value corresponding to the same product number is selected and outputted to a variable speed device for a prime mover of a concrete mixer.