JPS5847870A - Concrete executing apparatus - 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] According to the additional invention, it is possible to achieve smooth casting and pouring with a relatively low driving force, generating less dust, and achieving poured concrete with excellent strong earthquake resistance. The purpose of this project is to provide a new concrete construction equipment that can perform concrete spraying without attaching formwork, and therefore does not require removing the formwork after the concrete has hardened and can be used for surface finishing and other purposes immediately. It has the advantage of simplifying the work and significantly shortening the construction period since the construction work can be started, and it is gradually becoming more common today. Wet method, in which water-mixed material is pumped through a concrete quartet, dry method, in which dry concrete material is pumped with high-pressure blast and sprayed while adding kneading water at the nozzle, and an intermediate between these methods. There is a semi-wet method, which is a method that can be used for spraying, but even though each of these methods has its own merits, it also has disadvantages and drawbacks. The mixed material is conveyed through a conduit such as a pipe or hose and sprayed from a nozzle, which has the advantage that the cement, etc. is well moistened and the strength of the shotcrete obtained is higher than that of the dry method. However, the frictional resistance within the pressure-feeding pipeline is large, and a pressure-feeding force of around 50 to 47 degrees is required, so it is necessary that the pipeline and mechanism for pressure-feeding each have sufficient pressure resistance. However, even if we place restrictions on the size and shape of the coarse aggregate and pay special consideration to the pipelines and pumping mechanism, the transport distance will be limited. It has the disadvantage that it is difficult to respond quickly enough to the actual situation at various construction sites because it is limited to about 50 to 60 m at most, and in addition, in terms of strength, which is the advantage mentioned above, it is necessary to follow the water-cement ratio to obtain the optimum strength. Since the viscosity and other properties of these materials are at their highest, it is practically necessary to increase the water-cement ratio to ensure pressure-feeding properties.
It is difficult to obtain the ideal strength, and it is difficult to achieve the desired benefits (also, there is a considerable amount of violet flaking from the sprayed surface, and there is a limit to the thickness of the sprayed layer depending on the thickness of the sprayed surface). On the other hand, the dry method uses air pressure, so there is little frictional resistance in the pipes, etc., and a pressure of 5 to 6 Kf/cjN degrees is sufficient, so it is relatively simple and compact, with a mechanism and pipes. Since the preferred transport distance can be freely determined, for example, in a mine dug deep underground, it can be pumped from a position sufficiently distant from the target construction location, and in this sense it can be used freely depending on the site. Since the method involves force-feeding and spraying cement powder under dry conditions, it generates a large amount of dust, and in places such as underground mines, it is not possible to ensure the desired construction condition unless work is interrupted every short period of time. This seriously harms the working environment and has the decisive disadvantage that the strength of the shotcrete method obtained is only about half that of the wet method because the cement etc. do not come into sufficient contact with water. However, in the semi-wet method 1, which is considered to be an intermediate construction method, the water injection position in the dry method 1 is shifted from the nozzle part, and the water injection position is shifted from the nozzle part to create a pipe-like construction method. This is a method of adding water in the middle of the pipe, but since a portion with high frictional resistance is formed at the end of the pumping system, the water should be added at a distance of about 5 to 6 meters from the nozzle. If the water addition position is made larger than this, paste, etc. will adhere to the inner surface of the pipe or hose and will block the pipeline. Since a large resistance area is formed at the end where the pressure is reduced, the dry method requires a pumping or piping mechanism with unexpected performance, and it is difficult to use cement as in the wet method. It is not possible to obtain sufficient contact mixture with water and the like.In addition, in order to improve the resistance layer of the raw warm kneaded material even in the case of falling over, and to reduce rebound and flaking, It has the disadvantage of requiring a large amount of rapid setting and instant setting agents such as acid powder, calcium chloride, sodium aluminate, and sodium carbonate.

Historically, no matter which method is used above, spraying involves spraying high-pressure 9 atmospheres onto the construction surface.
In the process of being sprayed onto the construction surface, the fine particles in the spray material are scattered to some extent, and the scattering of particle components that are not sufficiently wetted is particularly significant, and even if the direction of acid root construction is reached, large wind pressure may be applied to the construction surface. Even if the material is hit directly by the material and once sprayed, the material will be blown away by the wind force and be blown away again from the ground or the sprayed surface. Therefore, the working atmosphere becomes extremely polluted and the view is completely obstructed within a few minutes, and this is particularly noticeable in tunnel construction or indoor construction with relatively small cross sections.

Furthermore, even if it is dispersed with the acid root spray gas, it will be a point spray after all, and the construction method will move it sequentially, so even if it is done by a reasonably skilled nozzleman, it will not be possible to spray uniformly and flatly. It is not easy to spray the surface well, and the efficiency of construction is also poor. The equipment for pumping the sprayed material is also small (at least several tens of m1, generally over 100 m), which requires extremely high pumping power, and requires a dry air pressure system that produces a large amount of dust. As mentioned above, a certain amount of pressure is required even in the case of feeding, and the pressure feeding mechanisms and pressure feeding pipelines are required to have corresponding pressure resistance and high output, so the equipment as a whole is large, strong, and expensive. In addition, the quick-setting agent that is essential for such spraying is added at the nozzle, but the quick-setting agent does not mix sufficiently with the concrete material. The rapid setting effect cannot be expected to be uniform, and there is a large scattering loss when spraying the unevenly distributed quick setting agent.Also, this scattered quick setting agent creates an extremely irritating working atmosphere, so check the spraying condition. In addition, with regard to resistance to shear stress in the sprayed layer, in the case of the dry method, the amount of air in the sprayed layer is generally 1,000,000, and in the case of the wet method, the moisture content is There is a strong tendency for the material to become rough, and in any case, it is difficult to obtain a desirable and stable resistance to shearing stress.

The present invention has been devised after repeated studies in view of the above-mentioned circumstances, and is made by pumping mortar or paste in the form of a slurry with sufficient fluidity and supplying it to the center of a rotating disk. Aggregates such as sand and gravel are fed as additive materials in dry conditions onto the rotating disk by a mechanical transfer means such as a screw mechanism, and the co-rotating action of the rotating disk mixes these materials and It is proposed to carry out projection construction by giving more preferable scattering velocity energy to the peripheral side and scattering toward the spraying surface.
A preferred method is to use shelled fine aggregate, which is prepared by adding and mixing cement powder to fine aggregate such as sand, which has been adjusted to absorb water adhering to the surface in a uniform state, as an additive material under the dry conditions, or/and as appropriate. Mixture of coarse aggregate with similar shell formation＠-
Furthermore, regarding the mortar as a 4-in-1 pressurized material with fluidity as described above, the blended fine aggregate was mixed with surface water adhesion as described above, and cement powder was added and mixed to form a shell. By using a slurry-like material prepared as aggregate and further adding water to the aggregate, the present invention also employs fire-resistant materials as the coarse aggregate and hydraulic material powder. It can be used for construction to protect people.

That is, to further explain the present invention, the general structural relationship of the apparatus for implementing the method of the present invention as described above is 1lli! The rotational projection mechanism 1 is smaller than that shown in IE.
, fluid adjustment mechanism 2 for pumping bonde such as mortar or paste, dry additive material adjustment mechanism 3.41, fluid vI4! For the ll1rIA structure 2, either mixer 21 or 22 or both are installed in front of it.
is provided with a cement hopper 24, a sand hopper 23, an admixture hopper 25, and a water addition mechanism 26, and the mixer 22 is also provided with similar mechanisms 23 to 26 and a secondary water addition mechanism 2T.
is provided. Further, the dry additive material adjustment mechanism 3 is provided with a coarse aggregate hopper 31, a fine aggregate hopper 32, and an quick-setting agent hopper 33, and the gk mechanism 4 is provided with a mixer 4.
0 in advance, and the mixer 40 also has a coarse aggregate hopper 41,
A fine aggregate hopper 42 and a quick setting agent hopper 43 are provided. However, each hopper 22.23.
23, 31 to 36 and 41 to 43 are each provided with a constant supply feeder so that these materials can be taken out quantitatively, and the same is true for the water adding mechanism.

The fluid conditioning mechanism 2 for pumping the bonder 5 is connected to the projection mechanism 1 by the bonder 5, and the fluid conditioning mechanism 2 for pumping the bonder 5 is connected to the projection mechanism 1, and the dry additive material 1lIII
1 Mechanism 3.4 is a conveyor or other suitable conveyance means 6.6
a to the hopper 11 of the spraying mechanism 1, and the father Ki ξ kits t-21 and 22 are also connected to the adjustment mechanism 2 by a conveyor or other conveying means 1.7a,
The conveyance system that reaches the projection mechanism 1 through the four terminals 5 is constructed using a pipe. The rotary projection mechanism 1 may be a trolley-mounted type as shown in FIG. A robot type device as shown in FIG. 3 may be adopted. As shown in FIG. 2, in the case of the Ig1 truck 101, each material group adjusted by the above-mentioned adjustment mechanism 2.3 can also be transported to the construction position using the truck. It has a rotating projection mechanism 1! 2 trolleys 102 are dry painting materials, aim adjustment mechanism 3
The dry material cut out from the bottom of the hopper 35 by the cutting mechanism 36 is sent to the projection mechanism 1 by conveyors 37, 37a□, and the third cart 103 A hopper 55 is provided for receiving the material subjected to lI[ by the fluid adjustment mechanism 2, and an agitator 56 driven by a motor 56m is provided at the bottom of the hopper 55, and a duct 56b from the agitator 56 is connected to the motor 5rm.
The discharge port 51b at the upper part of the mortar bonder 5-1 is connected to a conduit such as a hose leading to the center of the rotary projection mechanism 1 (not shown). ing. In addition, the first trolley 10
1 is provided with a projection mechanism 1 via a sliding table 104. That is, the sliding table 104 is self-propelled on a first truck 101 by a motor 105, and each truck is moved according to the conditions of the spraying construction site. 101 to 103 are the sliding base 104 in a stopped state.
The upper projection mechanism 1 is moved forward and backward as appropriate so that the desired projection work can be immediately carried out on the surface of a tunnel immediately after excavation. Furthermore, 115 in the first truck 101
is a motor for rotating the projection mechanism 1, and 1
Reference numeral 16 denotes a motor for sending the dry material from the hopper 11 for receiving the dry material from the conveyor 37m to the screw mechanism to the rotary plate portion of the projection mechanism 1, but the details of this portion are separately shown in Fig. 3. 1 and 2 are shown regarding the projection mechanism in the case of a robot type.

The specific configuration of the biased projection mechanism ItflS is described in the third section.
As shown in the figure, the pumping latch 5 as shown in FIG.
A center t13 connected to the conduit from the mortar pump 57 in the truck 103 is provided laterally along the central axis of the projection mechanism 1, and the tip of the center tube 13 is connected to a rotary plate having co-rotating blades 16. The stirring mechanism section 35 is opened toward the center of the tube 18 and at an appropriate distance from the rotating plate 18, and the rotating plate 18 has a stirring mechanism section 35 arranged between the open ends of the central tube 13. It is provided.

A dry material supply tube 12 is provided concentrically with the center tube 13, and a transfer tube is provided between the supply tube 12 and the center tube 13. A stirrer 1s is provided from the hopper 11 portion toward the rotary plate 18, and the stirring mechanism portion 35 is provided in the fifth portion.
As shown in the figure, it is protruded from a base plate 36 attached to the center of the rotary plate 18, and the stirring blades 3T and 38 are arranged in multiple stages and are fixed to the rotary plate 18 by a fixing member 39 and a suppressing member 39m. , Moreover, the handle part 36af and the fixing member 39m can be gripped.
It can be removed, cleaned or adjusted as appropriate under relaxed conditions. The supply tube 12 is equipped with a drive wheel 12m and is adapted to be moved together as appropriate.
2 may be a fixed one, and in any case, the transfer screw 1
9 is attached to the center tube 13, and the left end side in the figure is rotated from the joint 13b by the joint 13b, so that the material stored in the hoshiper 11 is properly transferred, and the rotary plate 1B
The supply amount is approximately proportional to the rotational speed of the screw 19. The rotating plate 18 is attached to the tip of the rotating cylinder 14 provided outside the supply cylinder 12, and the rotating plate 18 rotates around the scissors at a speed proportional to the drive speed jfK by a pulley 14aK mounted at the base end of the rotating cylinder 14. supplying materials on 18;
After being stirred by the stirring mechanism 35, it is supplied and dispersed onto the rotary plate 18. The tip of the rotating plate 18 of the supply cylinder 12 described above covers the stirring blades 37 and 388 and is close to the surface of the rotating plate 18, and a notch 12b is formed in a part of the tip.
As shown in Fig. 84, the spraying direction is appropriately restricted by discharging onto the rotary plate 18 from the portion 2b and adjusting the supply cylinder 12 by rotating it with the drive wheel 12m. As a result of the operation, it is appropriate to apply a limiting adjustment effect on the blowing direction of the rotary blowing mechanism 1 according to the shape of the arched blowing surface in an excavated tunnel having vertical walls on both sides as shown in M to C of FIG. It is clear that spraying construction can be achieved.

In the case shown in FIG. 3, the rotary projection mechanism 1 as described above is provided to the operation table 5o via a rotation mechanism 51, and the operation table 50 has a support arm 52 and an operation cylinder 53.
It is moved vertically by the expansion and contraction operation of the operation cylinder 53 and rotated left and right by the operation of the turning mechanism 51, so that projection casting work can be performed at a desired position and direction.

The equipment shown in Figure @1 above can be used to carry equipment inside the mine or to the pouring place, and to transport it outside the mine or outside the pouring place, depending on the diameter of the tunnel where concrete is to be poured and the conditions of the construction site. The combination relationship with the devices to be set can be changed as appropriate. That is, this relationship is shown by diagonal lines or broken lines in FIG. Other mechanisms are set up and operated outside the mine, and in some cases, only one side of the mechanism is marked with diagonal lines.
The adjustment mechanism 2 can also be carried into a mine, etc., and operated, and in the case of a large-diameter pit, or a large or large-diameter driving site, the mechanism within the range shown by the broken line can also be carried into a pile, etc. You can work with it. In other words, these factors can be determined depending on the diameter of the tunnel, the width of the casting site, etc., but the method according to the present invention is capable of transporting tens of Kf/j like the wet method in the United States. Since high pumping pressure is not lost, smooth conveyance and casting can be carried out.The advantage of the present invention is that in the device configured as described above, the sand or fine aggregate hopper 23. By installing the adhesion-resistant surface water uniformity adjustment mechanism 8 in front, it is possible to achieve even higher performance. In other words, it is well known that fine aggregate such as sand is naturally produced and deposited in the open air and then used for mixing and adjusting this type of concrete. It is generally known that the adhesion resistance state varies widely. For example, even if fine aggregate is from the same source and has the same grain size, the amount of water it can withstand varies greatly between the top and bottom of a sand pile deposited in a yard, and historically, the amount of water that can withstand the same amount of water deposited in the center of a sand pile. Even at the top of a sand mountain, the weather changes depending on weather conditions, and if we look at each fine aggregate particle in detail, the amount of water it can withstand differs in each part of the particle, and there are parts that are bone dry and parts that are wet. On the other hand, in ready-mixed concrete, the strength of the mixed concrete is greatly influenced by the amount of mixed water and the amount of air mixed in.
It also controls its stickiness and workability. The present invention proposes uniformization of the surface water of such fine aggregates, and in order to equalize the amount of surface water resistance and adhesion resistance, a sweet-salt mixing relationship is proposed. can be determined.

-For example, by equalizing the amount of water that can withstand water landing, it is possible to accurately determine the water-cement ratio (W/C), which is important in mixing this type of concrete, and it is possible to easily distribute water to those in the United States, where the amount of water that can withstand varies. It can solve the absurdity of adding
Regarding sand-cement ratio (8/C), sand-gravel ratio (J/A), etc., it is possible to accurately account for the water adhering to the sand, making highly accurate management possible. In addition, the present invention proposes to first add and mix cement to the fine aggregate with a uniform water landing capacity, and the added cement powder will spread onto the fine aggregate surface due to the water adhering to the surface. The coating coagulates to form a shell layer. That is, this shell layer has a W/C% of 8/C in the whole fresh concrete.

Even if the total amount of 8/A is exactly the same, the layer is considerably richer in cement than the cement paste on the surface of the fine aggregate in the case of simply mixed and adjusted materials, and for this reason, it is an extremely stable shell. For example, even if the mortar immediately after preparation is washed with water, the shell layer will not be removed, and this means that the shell mortar has a relatively high W/C (water volume hole) and has excellent fluidity. This shows that even if it is ensured, the shell-forming layer will not be damaged by a four-way pressure-feeding process, and the shell-forming state will not be essentially changed even by scattering spraying from one rotary plate. However, such shelled fine aggregate becomes spherical because the irregularities on the surface of the fine aggregate are covered with a shelled layer, and the surface portion of the shelled layer is separated from the surrounding paste with high moisture content. It exhibits a bearing effect, and from this point of view, it also facilitates pressure feeding within the pipe by the pump.

As mentioned above, the water leveling treatment of fine aggregates adhering to tic is based on (1) velocity energy and impact action, (2) vacuum treatment to remove the 9 Qi between particles, water injection, and then re-solidification of the particles. A process that uses a pressure difference (sometimes also using vibration etc.) to remove the moisture between the particles.■ Fine aggregate particles are immersed in water and stirred to sufficiently remove stratified air, and then scraped with a conveyor, etc. The purpose can be achieved within a short period of time and coulometrically.Especially, as mentioned above, the purpose can be achieved in a short time and coulometrically. In the present invention, the water adhering to the surface of the sand particles is not made to be in the shape of a trunk or becoming large, so it can be carried out efficiently. After moving the particle surface and uniformly wetting it, the excess is removed, resulting in a uniform adhesion state and an even amount of adhesion on each particle surface (the amount of adhesion is proportional to the speed or impact energy). can be achieved at the same time, and even in the case of
Formation of a uniform adhesion amount can be achieved in the same way. - In the case of (■), generally water is added and mixed after the adjustment process, but this is the same in the case of (■■), and water is added as appropriate. Achieve the desired surface water volume.

In the case of the present invention as described above, the concrete material is projected by high-speed rotation of the rotary plate and placed in the construction 1iK, and the aspect is similar to the above-mentioned spraying method, but the concrete material is Since high-pressure air is not used for spraying, the concrete components in the scattering process and on the construction surface are not exposed to normal pressure high-pressure air flow. The concrete on the construction surface will not be blown away by the high-pressure 9 air, and will only be compacted by the velocity energy of the projected concrete. Slurry # that is also pumped! Even though J (mortar or paste) is supplied onto a rotating plate with sufficient fluidity, materials under dry conditions are added and mixed on the rotating plate and cast by projection. Therefore, the withstand shear stress of the spraying process is increased to an optical level. In other words, in the spraying process, materials under dry conditions are sequentially projected as described above, lowering the W/C, and increasing the S/C (or A
/C), it is possible to obtain a construction with significantly reduced resistance to shear stress by using each material that has good transportability on the rotary plate, and of course, the layer thickness in one application can be increased. make it big.

Historically, in the present invention, the use of a powder or liquid quick setting agent such as sodium aluminate or jet cement is exactly the same as in the case of conventional wet, dry or semi-wet methods; The binder is supplied together with the additive material under the above-mentioned dry conditions, and the rapid setting agent is fed onto the rotary plate 1B (from the C mixer 40 to the rotary plate 1B by a screw-type transfer means). It is evenly dispersed in the dry material and evenly added to the slurry through the dry material. That is, in the conventional spraying method, F
Immediately before spraying this quick-setting agent (nozzle S
), so even if the acid root nucleus quick-setting agent is press-fitted, the quick-setting agent will still be added in a certain agglomerate state to the surface of the nodule-like or aggregate-like kneaded material, and it will not be uniform. Coupled with the above-mentioned blowing wind pressure, it is likely to be dispersed in the atmosphere as fine powder (creating an irritating working environment, but as mentioned above). In the case of the present invention, in which cement powder is added evenly and dispersed, these disadvantages can be eliminated at once and the creation of an irritating working environment can be avoided. Even if a shell has been formed, this quick-setting agent is added.

By making the material relatively slow-flying, and in combination with the fact that the surrounding surface is in a dry state, it is effective as an appropriate quick-setting agent even if the contact time with the cement component is relatively long. I'll get it. Historically, as mentioned above, in the case of the present invention, where uniform dispersion is obtained and there is almost no scattering due to wind pressure, there is little rapid setting required to achieve the same rapid setting effect as IWJ. Naturally, this is not only economical, but also contributes to improving the long-term strength of the resulting shot-cast concrete work.

7 and 8 show another embodiment of the (b) transfer and projection mechanism according to the invention. That is, in the case of those shown in FIGS. 3 to 5 described above, the stirring blade 3
T and 38 indicate that the stirring blade 3T mainly performs stirring action and is therefore parallel to the axis, whereas the stirring blade 38 is inclined and directs the concrete material sent by the rotating screw 19 onto the rotating plate 18. It has the effect of sending the In contrast to the one shown in FIGS. 3 to 5, the one shown in FIG.
In addition, a stirring mechanism 38' is provided at the tip of the screw 19 that feeds the dry material, and the scraping mechanism 35m has a stirring mechanism 38' as shown for its short blade 37b (including both long blades 37at). ＠Inclination with symmetrical plane＠
It has 佽srb' and 3Tb'. That is, screw 19
The dry material is transferred by the stirring mechanism 38' and then transferred to the scraping rotary plate 18 by the scraping mechanism 35m.
(2) The direction of rotation of the turning plate 18 is appropriately switched by using a motor that can be rotated in reverse, that is, by using a motor that can rotate in forward and reverse directions, or by using an eye door that can be connected to and disconnected from the drive system from the motor 116. By doing so, even under conditions where the excavated tunnel bedrock is extremely uneven, it is possible to effectively project the concrete material onto the back side of the excavated tunnel, and to prevent such forward and reverse falling. Even in the case of rotational projection, the wing pieces 37m and 37bK
A scraping and supplying effect can be obtained.

It is clear that the mud layer of the base plate 36 may be constructed as shown in FIG. can be adopted.

A concrete example of construction using the apparatus of the present invention as described above will be described below.

Construction example 1 Patch mixer 22 in the tunnel shown in Figure 1
Using the dry material adjustment mechanism 4, Yamasand S was used as the fine aggregate, crushed stone No. 7 G1 was used as the coarse aggregate, and an aluminate-based material (trade name: Nato≦Tsukumu 5) was used as the quick-setting agent. On the other hand, in the fluid adjustment mechanism 2 for pump pumping, the above-mentioned mountain sand S, ordinary 4 Rutland cement C and water W were used as hydraulic monolithic powder and distributed. . That is, their distribution is as shown in Table 1 below.

The rotary projection mechanism used in Table 1 has a configuration as shown in Fig. 3, and its rotary plate 1B has a diameter of 5Q ffi.
0 mortar 4, which was rotated at 50 rpm and projected.
The amount of pressure conveyed by conveyor 5 is 59t/win, and the dry material conveyed by conveyor I61 is 14t/win.
0e 6 If/min s 42~A 4 is 1
09.2Kt/win, and the composition of the concrete that was projected onto the inner surface of the tunnel in this way, the reparation rate at the time of construction, and the strength of the obtained concrete are shown in Table 2 below.

That is, in either case, the powder is 11! @ There is little raw material (, There is almost no problem even if you work for several tens of minutes to more than 2 hours (,
In addition, it was possible to smoothly form a preferable concrete layer on the inner surface of the tunnel.

Construction Example 2 Construction was carried out in the same manner as Construction Example 1, but the compounding conditions were constantly changed and additives were used as appropriate. In other words, their specific composition relationships are as shown in Table 3 below.

:C-", l' l, I, l' 1. l l
l l ° 1 = “.

□ ↑ □ −11・ − : , , i, 9, 11.11 b of Q2
k m b S b k &! ′:″)j
l ■-Seal・I-"T'-'-"'1---1, Responsibility
−・, .・, . . 5. O-+ DJ
Power □1
- - - -□ Also, the supply waves onto the rotary plate 18 by the center 1113 and the supply pipe 14, the rotational speed of the rotary plate 18 in that case, and the distribution of the obtained fc projected concrete are as shown in the following 4 @. be.

\2, (3A1) The strength of the concrete thus obtained, the amount of dust generated during construction, and the rebound force are shown in Table #!5 below.

In Table 5, the amount of dust generated was small in all cases, and favorable construction was possible.

According to the present invention as explained above, powder of a hydraulic substance such as cement powder, which is the cause of dust generation in the conventional dry spraying method, is prepared as a paste or mortar and pumped, and the spraying is also carried out. The powder is 1j because it is projected by a rotating plate without using high-pressure air! ! The amount generated can be significantly reduced to the wet spraying method or less, and the mortar or HaPaste mortar? hmm! Even if the concrete is pumped, aggregate or quick-setting agent supplied in a dry state is added to the concrete to achieve the desired amount of water or concrete composition, so the amount of violet is not only small, but also It is possible to supply the material onto a rotary plate with a sufficiently high moisture content and excellent flowability, and in conjunction with the fact that it is easy to supply the above-mentioned aggregates, etc., which are supplied under dry conditions, this woodcutter formwork There is a mechanical structure and construction conditions that can be used to directly place concrete without using concrete, and the construction conditions can be significantly simplified and compacted, and construction can be performed smoothly with relatively low driving force.
In addition, it is possible to perform construction with favorable transportability, and it can also advantageously exhibit toughness and other properties, making this invention industrially highly effective.

4.Additional relations The present invention relates to the addition of No. 28308 of 1981 (hereinafter referred to as "nuclear system"), which involves adding hydraulic substance powder such as cement powder to a slurry with sufficient fluidity. It has a fluid adjustment mechanism for pumping bonde to make mortar or paste, a dry additive material adjustment mechanism for adjusting aggregate such as sand or gravel under dry conditions, and a rotary spraying mechanism,
The fluid adjustment mechanism for pressure feeding by the bonder and the center pipe of the rotary spray pickling barrel are connected by a pipe line having four pipes, and the dry additive material adjustment mechanism and the hopper of the (b) rotary spray pickling structure are connected as appropriate. The hopper is connected to a supply tube provided coaxially with the center tube, and a mechanical transfer means such as a screw mechanism is formed between the center tube and the supply tube. Although similar to the original invention, in the present invention, the hopper is connected to a supply tube provided coaxially with the center tube, and a mechanical transfer means such as a screw mechanism is provided between the center tube and the supply tube. At the same time, by providing a stirring stage between the central tube and supply tube and the rotary plate for rotational projection, each material supplied to the rotary plate is appropriately stirred and mixed before being projected. This is an improvement of the original invention because it can improve the quality of the projection work obtained by forming a mixed state of materials.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention, and FIG. 1 is an explanatory diagram showing the general structural relationship of the present invention;
FIG. 2 is a side view of an embodiment formed using a cart so as to be suitable for construction inside a tunnel, etc., and FIG. 3 is a material supply projection mechanism of an embodiment according to the present invention adapted to be a robot type. Notched side view about the part, #! Figure 4 is a vertical cross-sectional front view of the rotary plate part, Figure 5
The figure is a slope view of the stirring barrel base plate, Figure 6 is an explanatory diagram of the tunnel inner surface projection construction state according to the present invention, and Figure 7 is a partial diagram showing a modified example of the rotary plate and stirring mechanism portion according to the present invention. The sectional view, FIG. 8, shows an end view thereof. , However, in these drawings, 1 is a rotary spraying mechanism, 2 is
3.4 is a fluid adjustment mechanism for bonde pressure feeding, and 3.4 is a dry material-m
mechanism, 5 is a pump, 6.6a and 7%T1 are conveyance means,
8 is a water adhesion resistance leveling mechanism for fine grain material on the surface; 12 is a supply cylinder;
13 is the center tube, 14 is the rotating cylinder, 15 is the bearing part, 16 is the L
1 rotating blade, 18 a rotary plate, 19 a transfer screw, 3B a pace plate, 36a a handle portion, 37.38 a stirring blade 2. s
7m, 37b is each wing piece, 37b' is a symmetrical inclination direction, 3
g is a fixing member, 39m is a suppressing member, 5T is a mortar pump, 101 is a first truck, 102 is a second truck, 103 is a third truck, 104 is a sliding table, 105 is its drive phase motor,
Reference numeral 116 designates motors for driving the rotating plates. Patent applicant Hajime Ito Inventor Hajime Ito
Yoshi Higuchi waist circumference
Tadashi Tsuji amount mountain
Motoyasu Fusuma Ta 1)
Hiroki Ken Kurohane Copper quantity Ryudo Nakamura
Yuki Tomikawa -Continued from page 10 Inventor Yuki Tomiyo- 318 Nittachibana-cho, Seya-ku, Yokohama City

Claims (6)

[Claims] (1) Fill with hydraulic material powder such as cement powder.
A fluid adjustment mechanism for pumping a bonder to make slurry-like mortar or paste with sufficient fluidity, and bones made of fine aggregate such as sand or coarse aggregate such as gravel, or both. It has a dry addition material 811!1 mechanism for adjusting the material to be added to the fluid for I-imp pumping under dry conditions and a rotary projection mechanism for applying the material from both of these adjustment mechanisms; The fluid adjustment mechanism for pressurized feeding and the central pipe of the rotary blowing mechanism are connected by a pipe line having a pump, and the dry additive material adjusting mechanism and the hopper of the rotary blowing mechanism are connected by a suitable conveying means. , connecting the hopper to a supply cylinder provided coaxially with the central pipe,
A mechanical transfer means such as a screw mechanism is formed between the central pipe and the supply cylinder, and a stirring means is provided between the central pipe and the supply cylinder and (b) a turning plate for rotational projection. Concrete construction equipment characterized by: (2) A base plate is removably attached to an opening formed in the center of a rotary plate in which rotary blades are arranged on the circumferential side of the rotary projection mechanism, and a stirring mechanism is provided on the base plate. fC Claim #! Concrete construction equipment described in Section 1. (3) A base plate is removably deposited in an opening formed outside the center of a rotary plate in which (b) rolling blades are arranged on the circumferential side of the rotary projection mechanism, and a scraping mechanism is provided on the base plate. 9. The concrete construction apparatus according to claim 1, wherein a stirring mechanism is formed at an end of a screw mechanism provided in a central busy pipe. (4) As a scraping mechanism, blades parallel to the axial direction of the central cylinder are arranged on the base plate, and symmetrical inclined surfaces are provided on both sides of the blades to drive the rotating plate. The system is configured to be able to switch and rotate in either the forward or reverse direction, and the direction of rotation of the rotary plate is appropriately switched, so that the material is smoothly supplied and projected to the rotary plate in either the forward or reverse rotation state. Concrete construction equipment listed in Section 3 of the special d'f constraints. (5) The end of the supply cylinder is brought close to the rotary plate in the rotary projection mechanism, and a partial notch is formed in the end of the supply cylinder to regulate the direction of projection by the rotary plate. 2. The concrete construction apparatus according to claim 1, wherein a rotation operation mechanism is provided for the supply tube, and the rotational projection direction of the rotary plate is changed by changing the position of the notch. (6) 1st. a second truck and a third truck;
The cart is equipped with a rotary projection mechanism, and the second cart is equipped with a dry material storage hopper, and the third cart is equipped with a fluid storage hopper for four-way pumping, and the material deposited from the second and third carts is transferred to the second cart. 82. The concrete construction apparatus according to claim 81, wherein the concrete construction device 7 is supplied to a rotary projection mechanism of one truck.