JPS58189062A - Mechanism for spraying mixture of cement - Google Patents

Abstract

PURPOSE:To smoothly spray the mixture of cement under the condition to diminish diffusion or splash, by providing the rotary disc having a direction- controlling part whose sliding motion can be adjusted to the spraying mechanism. CONSTITUTION:A rotary disc 2 is provided at a rotary cylinder 3. Said rotary disc 2 comprising a main spraying opening 21 and a sub spraying opening 22 can be moved by the rotation of a screw shaft 4, and the sub spraying opening 22 has a direction-controlling part 23. Hence the work of spraying the mixture of cement is performed at a position defined by the relationship between the rotary disc 2 and the direction-controlling part 23, while rotating the rotary disc 2 at a high speed. Thus, the spraying along a specified direction can be performed while diminishing diffusion or splash, so that its efficiency can be enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the invention of a cement mixture spraying mechanism, and provides a mechanism that can smoothly carry out efficient spraying construction on construction surfaces having shoring and other installed objects. Spraying cement mixtures such as concrete or mortar has become increasingly popular in recent years as it eliminates the need for formwork and can shorten the construction period by omitting the assembly and removal of formwork. It is being done. By the way, the conventional method of spraying cement mixtures is to use high-pressure air using a nozzle, but this conventional method not only requires high-pressure air; This method is essential especially in this type of spray construction because the concrete, etc. to be sprayed is dispersed and wetted by high-pressure air, and the sprayed surface is exposed to high-pressure air, resulting in a large amount of the sprayed concrete, etc. scattering, bouncing, and falling off. The work environment is often polluted due to the rapid setting agent that is dispersed, and when working in tunnels or other closed conditions, work must be stopped at short intervals to remove dust floating in the air. It is well known that the work cannot be carried out unless efforts are made to calm down the air, and the fact that the spraying direction is spot-on has the disadvantages that the work efficiency is also unsatisfactory. For this reason -1
Projection construction is carried out using the centrifugal force of a rotating disk, and according to such rotation H&, the above-mentioned disadvantages of the nozzle method can be appropriately avoided, and moreover, spraying can be carried out efficiently. There are possible benefits. However, with this rotating disk method, the spraying direction is specified by the plate surface of the rotating disk, and this means that when spraying inward, for example, into a tunnel, the spray is always perpendicular to the tunnel, so there is no chance of it falling off or bouncing back. Even if there is an advantage such as reducing the construction layer, for example, when spraying the inside of a tunnel, it is normal to install supports made of shaped steel at regular intervals, and also during other constructions. Generally, steel frames and the like are installed to perform skeletal functions, and during spraying construction under these conditions, concrete cannot be properly sprayed inside or behind the shoring and steel members. Therefore, after spraying, it is necessary to separately perform manual concrete pouring work on these parts, which has the disadvantage that the high efficiency of spraying cannot be fully demonstrated.

The present invention has been devised after repeated studies in view of the above-mentioned serious circumstances.The embodiments of the present invention will be described with reference to the attached drawings.In the case shown in FIG. Concrete and other spraying materials are sequentially sent to the front end of the cough supply tube 1 by the screw 11 in the supply tube 1, and are supplied onto the rotating disk 2 from the discharge port 12 formed in the front end. 2 is provided coaxially with the supply tube 1 and is attached to the front end of the nine-rotation tube 3, and is rotated at a predetermined high speed condition by a driving mechanism such as a motor 6, and is supplied from the circumferential side of the nine-rotation tube 3. The bearing part 30 of the rotary tube 3 is engaged with the slider pull in the engaging part 5 with respect to the rail T formed on the bed 8, and the engaging part 5 has a screw rod 4. are screwed together, and by manually or automatically rotating the threaded rod 4t, the rotary cylinder 3 can move in the axial direction together with the bearing section 30, and the rotary disk 2 has a central A projection port 22 is formed after each of the main projection ports 21, and a direction regulating portion 23 inclined toward the rigid projection port 2211m is provided at the front end of the partition plate that partitions the main projection port 21 and the regular projection port 22. is formed. Reference numeral 13 denotes a bearing part of the supply tube 1, and a sprocket 1T is attached to the supply tube 11, and by driving the chain hooked to the tin rocket 11, the supply tube 1 itself is rotated by the trap, so that a sprocket 1T is attached to the supply tube 11. The angular position of the ejection port 12 in the circumferential direction is also changed as appropriate, so that the projection direction can be changed as appropriate in relation to the rotational speed of the rotating disk 2. Reference numeral 14 denotes a shaft of the screw 11, which is rotated at a predetermined speed by input to a drive unit 15 provided at the bottom end, so that an appropriate amount of supply from the discharge port 12 can be obtained. If there is a possibility that the material may leak from between the rotating disk 2 and the discharge port 12, a gap filler 32 is applied to the area as shown in FIG. 1A.

To explain the operation of the device shown in FIG. 1, it is clear that the material fed from the supply tube 1 having the screw 11 to the supply tube 1 having the screw 11 can be projected and sprayed by the high-speed rotation of the rotary tube 3. The rotary disk 2#-1 main projection port 21 and the cut projection port 22.22 provided in the rotary cylinder 3
Then, by rotating the screw rod 4, those projection ports 21
．． The relative positions that 22 takes with respect to the discharge port 12 of the supply cylinder 1 are the illustrated solid line position and the imaginary line position.

In other words, the rotating disk 2 is replaced by the supply cylinder 1.
Since it is possible to change the relation of receiving material from the discharge port 12 by appropriately moving in the axial direction, the supplied spray material can be rotated and projected by selecting one of the projection ports 21 and 22.

Moreover, in this case, since the cutting injection port 22 is provided with the tilted running direction regulating section as described above, the specific projection direction is regulated in the inclined direction by the direction regulating section 23.

In other words, by restricting the slope direction when spraying on the shoring or steel frame parts in a tunnel, it is possible to make spraying work that is effective for the inside or back of the shoring or steel frame parts. This can be achieved smoothly by projecting from the main projection port 22, especially since the main projection port 1 is formed on the 210 side and the projection spray angles at the main projection port 22 and 22 are opposite. In the process of spraying, it is possible to obtain sloped projections on parts such as the above-mentioned shoring, so that effective work can be easily carried out on the shoring parts in a simple moving spraying process. Of course, it is clear that projection work can also be performed from both the main projection port 21 and any of the cutting orifices 22.

What is shown in FIG. 2 and below is another embodiment according to the present invention. That is, in this embodiment, a peripheral rotating disk 25 having one projection port 20 on the central rotating disk 2 attached to the rotating plate 2 is attached to the rotating plate 2 as shown by solid lines and imaginary lines in the figure.
A direction regulating portion 23 is provided oppositely to the circumferential rotating disk 25 so that the projection spray angle can be varied. A female butterfly tube 26 is arranged on the peripheral edge of the rotating disk 20, and a female butterfly tube 26 is provided.
By rotating the nine-screw punch 24, the circumferential rotary disk 25 is slid from the solid line position shown in the figure to the imaginary line position.

The operating relationship of the lid shown in FIG. 2 is as shown in FIG. By carrying out rotational projection, the projected concrete is projected 1 tilted to the right by the action of the direction regulating part 23, and the central rotating disk 2 is located at the center of the circumferential rotating disk 25. By adopting the relationship shown in FIG. 3B, rotational projection can be obtained in the right angle direction.

Furthermore, as shown in Fig. 3C, the center rotating disk 2 is connected to the peripheral rotating disk 2.
5, the projecting spray tilted to the left is obtained, contrary to the case in Figure A, and as a result, the shoring arrangement is all IJ* as in the case of Figure 1 mentioned above. Projection work can be carried out smoothly on parts, etc.

In the case shown in FIG. 2, in order to prevent the mortar or paste from adhering to the screw punch 24, it is of course necessary to cover that part with a bellows-type covering tube or the like. Also the first
The 1111ml rotation of the screw punch 4 in the figure and the screw punch 24 in the ones shown in Figure 2 and below is automatically 14! by using an electric motor or a hydraulic motor. Of course, the operation can be performed.

According to the present invention as explained above, t! Not only can the target cement mixture be projected smoothly under conditions with little scattering or splashing due to the high-speed rotation of the rotating disc, but it can also be used to properly incline the direction of the projected cement mixture and to apply it to the support installation area in the tunnel. It is possible to spray effectively on the inside or back of steel frames, etc., and in particular, the inclined spraying direction can be reversed, making it possible to perform spraying with fewer dead points using a simple spraying machine. This invention has advantages such as being able to be carried out efficiently in a mobile construction process, and has a relatively simple mechanism and operation, making it a highly effective invention industrially.

[Brief explanation of drawings]

figure! [I indicates an embodiment of the present invention, and the first
The figure is a partially cutaway side view showing one embodiment of the present invention, FIG. 1A is a partially enlarged sectional view of the discharge port and rotating disk portion, and FIG. 81
FIG. 3 is a schematic diagram showing the projection switching relationship between the rotating disk and the auxiliary rotating disk, and FIG. 4 is a front view of the rotating disk. In these drawings, 1 is a supply tube, 2 is a rotating disk, 3 is a rotating tube, 4 is a screw punch, 5 is a engaging portion of F'i, 6 is a motor, 7 is a rail, 8 is a bed, 11 is a screw, 12 is a discharge port, 21 is a main injection port, 22H is a slotted projection port, 23 is a direction regulating portion, 25 is a circumferential rotating disk, 26 is a female screw cylinder, and 30 is a bearing portion. Patent applicant Hajime Ito

Claims (1)

[Scope of Claims] l A cement mixer sequentially supplied by a pressure feeding mechanism is placed in a rotating disk rotating at high speed and is sprayed by projecting it from the periphery of the rotating disk. A symmetrically inclined direction regulating section is provided opposite to the rotating disk, and the rotating disk having such a direction regulating section is provided so as to be slidable in the axial direction of the rotating disk, and the cement kneaded material is prepared by a feeding tube. A cement mixture spraying mechanism characterized in that the direction of projection from the cough rotary disk can be changed by changing the relative position of the rotary disk having the direction regulating portion with respect to the supply port.2. A main projection port and sub-projection ports before and after the main projection port are arranged in the axial direction, the rotary disk is attached to a rotary cylinder that is rotationally driven, and a rotary plate is provided coaxially therewith and is arranged for cement mixture. Part 1 of the percentage claim that allows for movement operations
12. The cement mixture spraying mechanism according to 11. 3 [G1 rotating disc is formed by a central rotating disc and a W8 @ rotating disc, and the cement mixture is provided coaxially with the supply cylinder, and the central rotating disc is attached to the 9-turn simple, and the cement mixer is sequentially supplied from the supply cylinder. The cement mixture is transferred from the central rotating disk to the circumferential rotating disk, and a direction regulating portion is provided opposite to the circumferential rotating disk, and this circumferential rotating disk is rotated centrally. 9. The cement mixture spraying mechanism according to claim 1, further comprising an operating mechanism for moving the disk in the axial direction.