JPH09193132A - Method for washing reinforcing member supporting jig and device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To permit the simultaneous washing of a plurality of reinforcing member supporting jigs by a method wherein washing solution is moved to flow in a washing tank to wash the jigs by colliding grinding particles against the surface of the supporting jigs. SOLUTION: Set rods 1 are washed by a method wherein the set rods 1 are pulled out of a mold by a set frame transporting crane 5 together with a set frame 3 to transport the set frame to a washing tank 6 as they are, then, the set rods 1 are dipped into washing solution in the washing tank 6 and, thereafter, compressed air or water is injected out of an injection pipe 8 to fluidize the washing solution. According to this operation, grinding particles, mixed in the washing solution, are also fluidized and are collided against the set rods 1 whereby the set rods 1 can be washed. After washing, the set rods 1 are pulled up by the set frame transporting crane 5 together with the set frame 3 and are transferred to a next process.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a concrete product,
For example, the present invention relates to a method and an apparatus for cleaning a reinforcing material supporting jig for a lightweight aerated concrete product (ALC) cured in an autoclave.

[0002]

2. Description of the Related Art In the production of lightweight aerated concrete (ALC) products, it is necessary to put a reinforcing wire mesh (hereinafter referred to as lath net) and a reinforcing braces inside the product in order to increase the product strength. After setting the lath net etc., the mortar is injected into the mold, but the lath net set in the mold moves during mortar injection, foaming, and semi-curing, and the positional accuracy of the lath net in the mortar cannot be ensured. Set a rod-shaped lath net positioning support jig (hereinafter referred to as a set rod) in the form to prevent the lath net from moving in the formwork in advance, insert the lathe net between the set rods, and then set the rod top. Set the fixing jig (hereinafter referred to as the set frame) for fixing the
After fixing the upper part of the set rod, mortar is injected, and when the mortar hardness is set to such a hardness that the lath net does not move even if the set rod is removed, only the set rod is extracted from the mortar together with the set frame. After semi-curing the mortar until it can be handled, the mortar block is cut into individual product plates with a piano wire cutter, and the products are reacted and cured by an autoclave to produce ALC plate products. Then, the set rod is then washed to remove the mortar adhering to the surface without residue, so it is removed from the set frame and after collecting only the set rod, the mortar adhering to the surface is washed and removed with a high pressure spray of water, Then, in order to prevent the mortar from easily adhering to the surface of the set bar, a mortar release agent (oils) is applied to the surface of the set bar by a spray method, and then the set bar is attached to the set frame and used again.
In the above-mentioned method, it is necessary to remove the set rod from the set frame, wash it, and then attach the set rod again, resulting in extremely low work efficiency. Therefore, the present applicant has proposed a device capable of effectively cleaning the set rods in a state of being engaged with each other without separating them from the set frame, as disclosed in JP-A-5-177623 and JP-A-5-177624. There is. That is, the set frame with which the set rod is engaged is placed on the pallet, and the pallet by the transfer device is advanced along the washing tank to wash the set rod with washing water.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention As described above, Japanese Patent Laid-Open No. 5-177623 and Japanese Patent Laid-Open No. 5-17762.
In the invention of Japanese Patent No. 4, it is necessary to mount the set frame with the set rod engaged on the pallet and move the cleaning tank inside, and the number of set frames mounted on the limited space of the pallet is limited. There is a drawback that is done. Therefore,
It is an object of the present invention to provide a simple and efficient cleaning method and apparatus for a reinforcing material supporting jig (setting rod) that can be cleaned simultaneously.

[0004]

SUMMARY OF THE INVENTION The present invention provides the following cleaning method and apparatus for a reinforcing material supporting jig to achieve the above objects. That is, in a method of cleaning a supporting jig for positioning and supporting a reinforcing material embedded in lightweight cellular concrete in a mold, the cleaning solution is made to flow in a cleaning tank filled with the cleaning solution and is mixed in the cleaning solution. A method for cleaning a reinforcing material supporting jig, characterized in that the polishing particles are washed by causing the abrasive particles to flow and colliding with the surface of the supporting jig. Particularly, the abrasive particles have a specific gravity of less than 1. It is characterized by being particles. Then, the following apparatus is provided as an apparatus according to the method. That is, in a device for cleaning a supporting jig for positioning and supporting a reinforcing material embedded in lightweight cellular concrete in a mold, a fixing jig in which a plurality of reinforcing material supporting jigs are arranged at a predetermined interval, and an abrasive particle. It is a cleaning device for a reinforcing material supporting jig, which comprises a cleaning tank filled with a cleaning liquid mixed with and a blow-out pipe arranged in the cleaning tank.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. The reinforcing wire mesh (M) of the ALC panel shown in FIG. 5 is attached by implanting the set rod (1) in the hole (2) formed in the bottom surface of the form (K) in the drawing, and then setting the rod (1). Insert the reinforcing wire mesh (M), which is a lath mesh that has already been subjected to rust prevention, between the two
The upper part of the above is engaged and fixed by a set rod fixing jig attached to the set frame (3), and a large number of reinforcing wire meshes (M) are assembled in a block shape. Then, inject mortar into the mold (K),
After the mortar foams and hardens to a certain extent, the set frame (3) is hoisted by using the hoisting part (4) on the side surface of the set frame (3) to fix the set rod ( Remove 1) from the mold (K). When arranging the reinforcing cages in the formwork, a set rod inserted into the set frame by engaging the lower end engaging portion of the set bar with the lower spacer assembles a large number of reinforcing cages into a block, This was immersed in a tank of rust preventive agent, the block-shaped reinforcing bar cage with rust preventive agent attached to the set bar was hung with the set frame, inserted into the form frame, mortar was injected, and the mortar hardened to some extent. After that, the set rod is pulled out together with the set frame from the form frame by rotating to disengage the lower end spacer of the set rod from the reinforcing cage.

The set rod that has undergone the above steps enters a cleaning step. In the conventional cleaning method, as shown in FIG. 4 (a), the set frame carrying crane (5) pulls out the set frame (3) together with the set bar from the form frame, and then the set frame (3) extracted as shown in (b). Remove the set rod (1), bundle the set rods (1) as shown in (c) and store them in the washing tank (6), and wash by washing with high pressure spray (7) from above with washing water. After that, set frame (3) again as shown in (d)
The complicated work of attaching the set stick (1) to

In the present invention, as shown in FIG. 3, the set rod (1) of the set frame (3) having a large number of set rods (1) carried by the set frame transport crane (5) is
As is shown in (b) as it is, the crane (5) is inserted into the cleaning tank (6) filled with the cleaning liquid (cleaning water + abrasive particles) by descending. And a cleaning tank (6)
The cleaning liquid in the cleaning tank (6) is made to flow by the compressed air or water (water in the tank) blown out from the blow-out pipe (8) arranged inside the set rod (1), and after cleaning, As shown in FIG. 3 (c), the set frame (3) is lifted up as it is by the set frame transport crane (5) and transferred to the next step.

The blow pipe (8) is located at the bottom of the cleaning tank (6),
Arranged as shown in FIG. 1 or FIG. 3 (b), the blow-out pipe (8) is provided with a blow-out port (9) through which compressed air or water (water in the tank) is blown out, as shown in FIG. Has been done. The blower outlets (9) are provided in a large number so that the cleaning liquid in the cleaning tank (6) can be sufficiently flowed, and the cleaning liquid in the cleaning tank (6) is discharged by compressed air or water in the tank. Is fluidized. Although the blow-out port (9) shown in the figure is provided on the upper surface of the blow-out pipe (8), it may be provided at any portion as long as the cleaning liquid can be flowed.
The diameter of the air outlet (9) is not limited to the size shown. When the water in the tank is blown out from the blow-out pipe (8), the water in the tank is circulated and blown out by a pump (not shown) or the like.

Abrasive particles (10) are mixed in the cleaning liquid in the cleaning tank (6), and when the cleaning liquid is flown by the blow-out pipe (8), the polishing particles (10) are also flowed.
Then, as shown in FIG. 2, the abrasive particles (10) collide with the surface of the set rod (1), that is, the mortar adhered to the surface of the set rod (1) is scraped off with the abrasive particles (10). The set rod (1) is washed. When the abrasive particles are mixed into the wash water and the wash liquid (wash water + abrasive particles) is made to flow in this manner, the washing effect is much higher than that of washing only the wash water, and the washing time is short.

A washing tank (6) is provided separately from the blow-off pipe (8).
As shown in FIG. 1, an extraction pipe (11) is attached to the outside so that the mortar precipitated in the cleaning tank (6) can be extracted by a pump (12) or the like. This is because the mortar attached to the set rod (1) is the cleaning tank (6).
This is because the sedimentation mortar is settled and accumulated at the bottom of the inside of the tank, and the collected bottoms are inclined and the collected pipes are provided in the vicinity of the bottom of the outside of the washing tank (6) for extracting sedimentation mortar (11).
Further, the abrasive particles are extracted by a pump (12) or the like, the abrasive particles are separated and removed, and then reused as a raw material of the product.

FIG. 1 shows an example in which a lath network is used. As shown in FIG. 1, in the present invention, the plurality of setting rods (1) are set frames (3) which are fixing jigs at predetermined intervals.
The set frame (3) is vertically long, while the blow-out pipe (8) is installed in the cleaning tank (6) in the lateral direction of the cleaning tank (6). In, a plurality of them are arranged at a predetermined interval.

INDUSTRIAL APPLICABILITY As described above, the present invention relates to molding of mortar for lightweight aerated concrete, which allows the mortar attached to the reinforcing wire netting set rod to be washed and removed without leaving without removing the set rod from the set frame. Cleaning method and device. According to the present invention, the blowing pipe (8) for mixing the abrasive particles (10) into the cleaning water filled in the cleaning tank (6) and blowing the compressed air or the water in the tank to the bottom of the cleaning tank (6). ) Is installed, and the set rod (1) is lowered into the cleaning tank (6) by a crane or the like to be immersed therein, and then the cleaning tank (6) is blown with compressed air or water in the tank blown out from the blowing pipe (8). The cleaning liquid (cleaning water + abrasive particles) in () is made to flow to clean and remove the mortar adhering to the surface of the set rod, so the surface of the set rod (1) can be removed without removing it from the set frame (3). Not only can the mortar adhering to the surface be removed without residue, but the set bar (1) can be placed at any position compared to cleaning with a brush, etc., and the set bar (1) of various shapes can be cleaned. Is what you can do.

The abrasive particles are preferably made of a material that does not easily wear due to fluidization or washing, and resin, rubber, ALC powder, mortar dust, etc. are suitable. It is preferable that the size is smaller than the gap between the cleaning rods so that the gap between the setting rods can be sufficiently cleaned. Further, depending on the material, particles adhere to the surface of the steel set rod after cleaning due to the adsorption force of water. Therefore, it is preferable to use a material that does not easily adhere to the surface of the set rod. The specific gravity of the abrasive particles is preferably lighter than the specific gravity of the cleaning water in the cleaning tank in view of the following points. 1. Even if the flow rate of compressed air or water in the tank decreases and the flow becomes small, the cleaning effect can be secured. 2. Further, the adhered mortar removed by washing has a larger specific gravity than the washing water and settles at the bottom of the washing tank. Therefore,
If the abrasive particles have a specific gravity that floats in the washing water, when the precipitated mortar is reused as a raw material, the abrasive particles and the precipitated mortar can be easily separated and removed.

[0014]

Next, a specific embodiment will be described. Set bar attached to the set frame (diameter φ7 mm, length 800 mm
: Material: SW hard steel) A pair of rustproof nets (width 554 mm, length 1) with rustproof treatment between a pair of gaps (about 3 mm)
970 mm, mesh thickness 2 mm, open mesh (diamond: 16 mm long, 32 horizontal)
mm)), a plurality of mortar forming molds (volume 6.5 m ³ : height 0.6)
m × width 1.5 m × length 7.2 m) was hung by a crane and set. After that, as a basic mixture of foaming mortar, Portland cement and silica powder as the main components, quick lime, gypsum and foaming aluminum powder were mixed, and the foaming mortar was further mixed with water with a mixer Injected into the frame. Then, after the mortar foaming was completed and after semi-curing, only the set rod was pulled out from the mortar by suspending the set frame to which the set rod was attached from above the mold with a crane. After that, without removing the set rod from the set frame, add abrasive particles to water (material: polyester resin particles, specific gravity: 0.95, size: φ2.5 m).
Water tank filled with cleaning liquid mixed with m) (width 1.7 m x
(7.4 m long x 1.0 m deep) with a set frame placed on top, and the compressed liquid is blown out from the blow-out pipe provided at the bottom of the cleaning tank to flow the cleaning liquid, that is, the abrasive particles, and set bar and accessory The jig was washed. Since it is not necessary to remove the set rod from the set frame in this manner, the set rod can be fixed to the set frame by welding or bolting.

In any case as described above, according to the present invention, the supporting jig for positioning and supporting the reinforcing material embedded in the lightweight cellular concrete in the mold is provided in the cleaning tank filled with the cleaning liquid containing the abrasive particles in the cleaning water. Is a method of cleaning by dipping the cleaning liquid in the tank by flowing it, and as a specific embodiment, the bottom of the cleaning tank is provided with a blow-out pipe from which compressed air or water in the tank is blown out, The cleaning liquid in the tank is made to flow by blowing out compressed air or water in the tank from the blow-out pipe, and the set rod is cleaned by colliding the abrasive particles in the cleaning liquid with the setting rod. Therefore, the entire length of the set rod can be washed thoroughly. Also, according to this method, compared to cleaning with a brush or the like, the supporting jig can be arranged at an arbitrary position, and further, supporting jigs of various shapes can be cleaned. And
As an apparatus using this method, a plurality of reinforcing material supporting jigs are arranged and fixed at predetermined intervals, a fixing jig, a cleaning tank filled with a cleaning liquid containing abrasive particles, and a cleaning tank in the cleaning tank. It is a cleaning device for a reinforcing material supporting jig, which is composed of a blow-out pipe arranged. This makes it possible to wash multiple set rods as positioning jigs for reinforcement at the same time, and without the work of removing or installing the set rods from the set frame, the set rods can be washed while they are still attached to the set frame. Simple and efficient. A cleaning device can be obtained.

[0016]

According to the present invention, there is no need for complicated steps such as conventional removal of the set rod, cleaning of the set rod, and setting of the set rod. Since the cleaning can be performed without moving the cleaning tank in the lateral direction, an efficient cleaning method and apparatus can be obtained, and moreover, a plurality of reinforcing material supporting jigs can be simultaneously cleaned. Further, according to this method, compared to cleaning with a brush or the like, the supporting jig can be arranged at an arbitrary position, and the supporting jig having various shapes can be cleaned. Further, since the cleaning water is mixed with abrasive particles for cleaning, the cleaning effect is higher than that of cleaning water alone, and the cleaning time is short. By the way, in the conventional method, it took 30 minutes or more to remove the set rod, clean the set rod, and set the set rod, but with this method, it can be reduced to less than 1/10 of the conventional method within about 3 minutes. The drastic simplification has reduced the number of required workers from three to one.

[Brief description of the drawings]

FIG. 1 is a structural explanatory view of a set stick cleaning device of the present invention.

FIG. 2 is an explanatory view of the cleaning method of the present invention.

FIG. 3 is a work flow chart according to the present invention

[Figure 4] Conventional work flow diagram

FIG. 5 is a perspective view showing the relative relationship between the mold, the set rod, and the set frame.

[Explanation of symbols]

 1 set bar (reinforcing material positioning support jig) 3 set frame (set bar fixing jig) 5 set frame transport crane 6 cleaning tank 7 high pressure spray 8 blowout pipe 9 blowout port 10 abrasive particles 11 extraction pipe 12 pump M for reinforcement Wire netting (lath net) K formwork

Claims (3)

[Claims] 1. A method for cleaning a support jig for positioning and supporting a reinforcing material embedded in lightweight cellular concrete in a formwork, wherein the cleaning solution is made to flow in a cleaning tank filled with the cleaning solution, and A method for cleaning a reinforcing material supporting jig, which comprises cleaning the mixed abrasive particles by causing the abrasive particles to flow and colliding the abrasive particles with the surface of the supporting jig. 2. The method for cleaning a reinforcing material supporting jig according to claim 1, wherein the abrasive particles are particles having a specific gravity of less than 1. 3. An apparatus for cleaning a supporting jig for positioning and supporting a reinforcing material embedded in lightweight cellular concrete in a mold, and a fixing jig in which a plurality of reinforcing material supporting jigs are arranged at predetermined intervals. A cleaning device for a reinforcing material supporting jig, comprising a cleaning tank filled with a cleaning liquid mixed with abrasive particles, and a blow-out pipe arranged in the cleaning tank.