JPH05208412A - Mobile concrete mixer - Google Patents

Abstract

PURPOSE:To enable a necessary quantity of cement slurry at construction field to be adjusted by mounting a transportation drum for housing cement powder, a batch feeder for cement powder, a kneading water tank, a cement kneading, and stirring device and the like on the truck. CONSTITUTION:Powder cement (or a premixture of mixing cement and various sorts of additives, aggregates, and like materials) is transported in such a manner that it is housed in a transportation drum 13 having a helical blade 11 provided in the inner part through an inlet and outlet 12, and the inlet and outlet 12 are designed to be closed by a waterproof type dust tight cover 14. At the cement inlet and outlet 12, a cement powder batch feeder 16 is attached via a discharge part 15 and, thereby, a batch of cement is introduced into a small-sized cement kneading device 17, and the cement is kneaded to produce a cement slurry by supplying kneading water within a kneading water tank 20 mounted on the truck similar manner. The cement slurry is forwarded to a stirring device located lower than the kneading device 17 and held in a stirring condition until it is used practically.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cement kneaded product manufacturing truck which makes it possible to easily manufacture a required amount of cement kneaded product at the site where the cement kneaded product is used.

[0002]

2. Description of the Related Art At a construction site for building a building, a process of pouring a cement kneaded material into a desired place and hardening it to form cement concrete is a frequent operation. Previously, such cement concrete was formed by adding an additive such as an aggregate (or an additive) while adding water to cement taken out of a bag at a construction site to produce a kneaded mixture. It was usual to use the cement-kneaded material. However, since it is inefficient to perform such work at each construction site, using a truck mixer truck called a ready-mixed concrete truck, a concrete mixer truck, etc.
It has become common to put it in a rotatable drum, transport it to the construction site while stirring in the drum, and use the cement kneaded product as it is. Even now, this method is widely used.

However, the method of delivering the cement kneaded material to the construction site by using the above truck mixer truck has a drawback, and the drawback is becoming a big problem from the viewpoint of the recent social situation. First, there is a tendency that truck mixer trucks do not always operate as scheduled due to the deterioration of traffic conditions such as traffic congestion in urban areas. The cement kneaded product loaded in the truck mixer truck is prepared for use in construction such as pouring within a certain time. That is, the cement-kneaded product has a viscosity that increases even if stirring is continued in the drum, and after a certain period of time, it cannot be used for actual casting or the like. The cement kneaded product having such an excessively increased viscosity cannot be re-adjusted in its viscosity, and such a cement kneaded product needs to be disposed of. However, if the cement-kneaded material is discarded, it will eventually harden and become concrete, so it is not easy to secure the disposal site. That is, in addition to the material loss of discarding the cement kneaded material, the expense for disposal must be borne. In particular, a cement (SL cement) having a self-smoothing property (self-leveling property) used, for example, for forming a floor of a building, contains an additive made of an organic material having a relatively high unit price, and therefore, a material. Loss is large, and the cost for disposal is also large.

Furthermore, when a large amount of cement kneaded material is not used at one construction site (construction site), a small truck mixer truck is used, or a small cement kneaded mixture is added to an ordinary large truck mixer truck. Must be loaded and transported, which is extremely inefficient.

Alternatively, if the planned amount of cement kneaded material carried by a truck mixer truck is not used at the construction site, the remaining amount must be discarded as in the above case, and The problem occurs.

[0006]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention An object of the present invention is to cause a material loss such as waste treatment of cement kneaded material, an adverse effect on the environment due to the waste treatment, excess transport time, and excess cement time resulting in cement slurry. It is possible to supply the cement kneaded material to the construction site without the disadvantages of incidental deployment of a small truck mixer and with almost no previous complicated manual work. To provide a truck mixer truck.

[0007]

A rotatable cement powder transporting drum 13 having a spiral blade 11 inside and arranged so as to be inclined so that a cement inlet / outlet 12 is located at an upper portion; a waterproof type Cement powder discharge passage 15 having a dustproof cover 14 and connected to the cement inlet / outlet 12; cement powder quantitative feed device 16 attached to the cement powder discharge passage 15; cement kneading connected to the cement powder quantitative feed device 16 Device 17: The kneading device 17 is connected to the kneading device 17 by a water supply pipe 19 via a water supply amount adjusting device 18.
A truck for manufacturing a cement kneaded product, which is equipped with all of a kneading water tank 20 connected to a kneading device; and a cement kneading device stirring device 21 connected to the kneading device 17.

The present invention will now be described in detail with reference to the accompanying drawings. FIG. 1 is a side view of a cement kneading material manufacturing truck of the present invention, FIG. 2 is a plan view of the truck of FIG. 1 seen from above, and FIG. 3 is a truck rear view of the truck of FIG. It is the figure seen.

In FIG. 1, the cement kneaded product manufacturing truck is mounted with a rotatable cement powder transporting drum 13 which is inclined and arranged, as in the case of an ordinary ready-mixed concrete truck mixer. However, this drum 13 contains and transports powdery cement (or a premix which is a uniform composition by sufficiently mixing cement with various additives, additives, aggregates, etc.). Therefore, the cement slurry is not transported with stirring. Therefore, the cement inlet / outlet 12 is provided above (rear side). Fill the cement from this doorway 12,
It is also discharged when necessary. Cement powder transport drum 1
A spiral blade 11 similar to that of a normal ready-mixed truck mixer is provided inside the drum 3.
Is rotated, the cement is discharged from the drum 13.

A cement powder discharge passage 15 is attached to the cement inlet / outlet 12, and serves as a passage for supplying the discharged cement for cement kneading. In addition, in the present invention, since the material discharged from the cement inlet / outlet 12 is not a kneaded material but a powder, in order to prevent the scattering of cement generated at the time of discharge (also in transportation in rainy weather or construction in rainy weather, A waterproof dustproof cover 14 (for making the truck of the present invention available) is provided.

A cement powder quantitative feeding device 16 is attached to the cement powder discharging passage 15 and adjusts so that a required amount of cement is supplied for kneading. This cement powder quantitative feeding device 16 has a control device 2 in the vicinity thereof.
It is preferable to arrange No. 3 and control from the position where the kneading state of the cement slurry can be observed. However, the control device can be installed in other places such as the driver's seat.

The cement is then controlled by a cement powder metering device 16 to provide a compact cement kneading device 1
Introduced in 7. Water for kneading is supplied to the cement kneading device 17 almost at the same time. This kneading water is
The kneading water tank 20 is transported in a state where it is filled and arrives at the construction site.
It is supplied to the kneading device 17 through the water supply pipe 19 while the supply water amount is adjusted by 8. The control of the water supply amount adjusting device 18 can also be performed using the control device 23.

The mixture of cement and water kneaded by the kneading device 17 becomes a cement slurry, which is then sent to the cement kneading material stirring device 21, where the stirring is continued. That is, after the cement slurry is kneaded, it is desirable to continue stirring without standing still until it is used for construction, especially without going through a still state for a long time,
Normally, the cement kneaded material agitator 21 is allowed to stand by in an agitated state. When the cement kneaded material (slurry) is actually used at the construction site, the pressure kneaded material is also discharged from the stirring device 21 to the outside by using the pressure pump 22 also mounted on the truck. However, if the construction site already has a pressure pump, that pressure pump can also be used.

The above-mentioned respective unit devices and members themselves can be used by combining known ones by appropriately adjusting the size, shape, performance and the like. In the cement kneaded product manufacturing truck of the present invention, in order to easily manufacture a desired amount of cement slurry from cement powder at any place as described above, all necessary devices and members may be mounted. Become a feature. That is, the required amount or more of cement and water are supplied to the drum 13 and the tank 20, respectively.
Can be shipped to the construction site as it is, where the required amount of cement slurry can be manufactured.
The surplus cement can be taken home with you for another occasion.

[0015]

EFFECT OF THE INVENTION By using the cement kneading product manufacturing truck of the present invention, the cement slurry is separately prepared as a material,
It is not necessary to prepare a device or the like, and it can be prepared and used as needed and when needed. Therefore, the cement is not wasted, and the problem of discarding excess cement slurry does not occur. Therefore, the cement kneaded product manufacturing truck of the present invention is used when a cement composition using an organic additive is used at a construction site, such as when using a self-casting (self-leveling) cement (SL cement). This is particularly advantageous. Further, the cement kneaded product manufacturing truck of the present invention has most of its skeleton and vehicle body structure in common with an ordinary cement slurry agitating / transporting truck mixer truck (fresh concrete truck). Most of the vehicle body and structure can be used as they are, the manufacturing cost can be reduced, and this point is also very advantageous in practical use.

[Brief description of drawings]

FIG. 1 is a side view of an example of a cement kneaded product manufacturing truck of the present invention.

FIG. 2 shows a plan view of the track of FIG. 1 as seen from above.

FIG. 3 is a diagram of the truck of FIG. 1 viewed from the rear of the truck.

[Explanation of symbols]

 11 Helical Blade 12 Cement In / Out Port 13 Cement Powder Transport Drum 14 Waterproof Dust Cover 15 Cement Powder Discharge Channel 16 Cement Powder Constant Feeding Device 17 Cement Kneading Device 18 Supply Water Volume Control Device 19 Water Supply Pipe 20 Kneading Water Tank 21 Cement kneading agitator 22 Pressure pump 23 Control device

Claims (1)

[Claims] 1. A rotatable cement powder transport drum, which has a spiral blade inside and is inclined so that a cement inlet / outlet is located at an upper portion thereof; a waterproof dustproof cover, and a cement Cement powder discharge passage connected to the entrance / exit; Cement powder quantitative feeding device attached to the cement powder discharge passage; Cement kneading device connected to the cement powder quantitative feeding device; Supply water amount adjusting device to the kneading device A kneading water tank connected to the kneading device by a water supply pipe; and a cement kneading product manufacturing truck equipped with all of the cement kneading product stirring devices connected to the kneading device.