JP2009019477A - Grout injection system for sleeve - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a system capable of obtaining a mixer allowing a user to obtain a required quantity of grout at an upper story by employing a small-capacity, lightweight hand mixer as a mixer, preparing 5 or 6 units of the hand mixer as needed and distributing them, and capable of quickly and continuously injecting the grout into a sleeve as a target site. <P>SOLUTION: A grout injection system for a sleeve comprises an appropriate number of a small-capacity hand mixers for stirring the grout, a primary reservoir tank and a primary force-feed pump connected with the hand mixer via a primary discharge hose, a secondary reservoir tank and a secondary force-feed pump connected with the primary reservoir tank via a secondary discharge hose and an injection hose and an injection device provided at the tip end of the injection hose extended from the secondary reservoir tank for injecting the grout in the secondary reservoir tank into the sleeve. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a grout material injection system for a sleeve used as a means for connecting reinforcing bars to each other.

  In recent years, a sleeve is often used as a means for firmly connecting reinforcing bars. In the sleeve, reinforcing bars are arranged in a loosely fitted state, and a grout material is injected into the inner space to integrate the reinforcing bars. It has become. PCa has been remarkably progressed due to the shortening of the construction period and the stability of construction. As a result, there are many reinforcing bars that are integrated using sleeves in various parts including the connection of PCa members on the same floor, and the grout The amount of material used has increased to several times that of the prior art.

  At that time, the grout material is stirred and mixed using a large-capacity mixer which is heavy in weight, and the grout material is moved to an upper floor where the grout material is necessary, or is mixed and stirred with a small-capacity hand mixer. The fact was that they depended on the means of the human sea by a large number of contractors who stuff them in cans and buckets and transport them to the grout location by human power.

  However, moving to the upper floors using the large-capacity mixer, which is heavy in weight, requires moving by crane and disassembling and assembling the equipment. However, it is necessary to reinforce the place to place heavy objects on the upper floor of a building that has not yet obtained sufficient strength in a state where a concentrated load is applied. If a small-capacity hand mixer is used, grout There was a problem that it was difficult to secure a labor force when the amount of wood used increased.

JP 2006-348468 A

  The present invention solves the above-mentioned drawbacks, and even if it is a hand mixer with a small capacity, it is necessary to prepare an appropriate number of hand mixers dispersed and use a discharge hose, a storage tank and an injection hose. It is possible to obtain a grout material with a capacity of Further, the present invention provides a grout material injection system that can quickly and continuously inject a grout material into a sleeve to be constructed in a state having an optimum viscosity.

  An appropriate number of small-capacity hand mixers for stirring the grout material, a primary pumping pump connected to the hand mixer via a primary discharge hose, a primary storage tank, the primary storage tank and the first A secondary pumping pump and a secondary storage tank connected via a secondary discharge hose, and an injection hose extending from the secondary storage tank for injecting a grout material in the secondary storage tank into the sleeve And a grout material injection system into a sleeve comprising an injection device at the tip of the injection hose.

  Further, the present invention is characterized by a grout material injection system into a sleeve having a hand mixer with a small capacity of 10L to 30L.

  In addition, an appropriate number of small-capacity hand mixers are installed on the frame, and the stirring means for stirring the inside of the container is a grout material injection into a sleeve that can be detachably fixed to a frame standing from the frame. Features the system.

  Further, the present invention is characterized by a grout material injection system for a sleeve provided with a control means for opening and closing the injection hose at the tip of the injection hose and adjusting the injection amount.

  Furthermore, a branch board is provided on the primary pumping pump so that an appropriate number of primary discharge hoses corresponding to the number of hand mixers can be mounted, and the hand mixer can be selected by switching the primary discharge hoses. Features a grout material injection system into the sleeve.

  In place of the conventional large-capacity large mixer, multiple small-capacity hand mixers are prepared, and by using the discharge hose, storage tank, and injection hose, the grout material obtained by stirring can be used in containers such as cans and buckets. It was possible to eliminate the work of packing and transporting to the construction site. In addition, it has become possible to efficiently systemize the grout material injection into the sleeve.

  In addition, when using a large mixer, moving to the upper floor requires moving by crane and disassembling and assembling the equipment, which requires a lot of work each time it is moved. It was necessary to reinforce the place to place the heavy load on the upper floor of the building that was not obtained in a state where a concentrated load was applied, but this was solved by using a small-capacity hand mixer It became possible.

  In addition, during and after use, a large amount of grout material adhered to the inner wall of the large mixer, which was difficult due to hindering stirring and cleaning, etc. It became easier.

  Embodiments will be described below with reference to the drawings.

  FIG. 1 shows a system outline of an apparatus for injecting a grout material into a sleeve of the present invention.

  A plurality of hand mixers 1 (hereinafter referred to as “hand mixer 1” including the container 1a and the stirring means 1b) having a small capacity of about 10L to 30L are prepared at a construction site where the grout material injection into the sleeve is required. The required number will be decided according to the scale of construction. The hand mixer 1 is connected to a primary pumping pump 3 via a primary discharge hose 2. The grout material of the primary storage tank 4 serving as a hopper or a storage container (hereinafter collectively referred to as a storage tank) serving as a hopper or a tank that temporarily stores or passes by the force of the primary pump 3 is It is discharged to the secondary storage tank 7 by the secondary pumping pump 6 force through the secondary discharge hose 5, and the discharge force and the discharge amount are controlled by the secondary pumping pump 6 from the secondary storage tank 7. The sleeve 10 is injected through the injection hose 8 and the injection device 9 at the tip thereof.

  Each of the hand mixers 1 is small, has a capacity of about 10 L to 30 L, and is light in weight. Therefore, the hand mixer 1 can be easily moved to the upper floor where the grout material is injected.

  The hand mixer 1 is moved to the upper floor as described above, and distributedly installed on the gantry 11. The grout material is stirred in the container 1a of the hand mixer 1 by the stirring means 1b. The stirring means 1b can be moved, and can be manually stirred, or can be automatically stirred by being fixedly locked to the frame 12 erected from the mount 11. In the initial stage of stirring the grout material, the grout material in the container 1a is uniformly stirred manually, and when the fluidity is obtained to some extent, the stirring means 1b is fixedly locked to the frame 12 described above. In addition, the grout material can be automatically stirred. Further, the stirring time can be easily controlled by a control means attached to the stirring means 1b.

  In the appropriate number of hand mixers 1 distributed and installed on the gantry, water such as SSM (SS mortar), SSM120N (SS mortar 120N), etc., which is a grout material in a bag, is charged, as described above. The stirring means 1b is fixedly locked to the frame 12 of the gantry so as to be stirred automatically for 30 seconds by hand, and then kneaded for 1 minute 30 seconds. Grout material is about 25kg per bag, and about 4L of water is added to it. The tip of the primary discharge hose 2 is inserted into one of the plurality of hand mixers 1, and the other end is connected to the primary pressure feed pump 3 side. The grout material stirred and mixed by the hand mixer 1 is discharged from the primary discharge hose 2 to the primary storage tank 4. When the previously selected hand mixer 1 becomes empty, the primary discharge hose 2 is sequentially transferred to the next hand mixer 1 prepared in advance.

  The pump used for the primary pumping pump 3 may be small, and the grout material is discharged from the hand mixer 1 by the primary pumping pump 3 and temporarily stored in or passed through the primary storage tank 4. It will be. Air is mixed into the grout material stored in the storage tank 4 by this discharge process.

  A secondary discharge hose 5 is connected to the primary storage tank 4 of the primary pumping pump 3, and grout material mixed with air is discharged to the secondary storage tank 7 by the force of the secondary pumping pump 6. When the air is removed, the air is removed and transferred to the secondary storage tank 7.

  As a discharge force from the secondary storage tank 7, a secondary pump 6 having a capacity capable of injecting a grout material into the sleeve 10 located at a height of about 50 m in the horizontal direction and about 3 m in the vertical direction. Is appropriate.

  The grout material is injected from the injection hose 8 and the injection device 9 at the tip of the other end side through the injection port of the sleeve 10 by the pressure of the secondary pump 6 and the reinforcing bars are firmly connected.

  One end side of the primary discharge hose 2 is inserted into the hand mixer 1, and the other end side is connected to the primary pressure feed pump 3, but the primary pressure feed pump 3 leads to the primary storage tank 4. A branch board 13 is provided immediately before the injection port, and several primary discharge hoses 2, 2 ′, 2 ′ are connected to the branch board 13, and one end side of each is connected to another hand mixer 1. Then, a branch path is formed. The one shown in FIG. 2 is connected to three primary discharge hoses 2, 2 ′, 2 ′ that form a three-branch path.

  With the above configuration, it is possible to select one of the primary discharge hoses 2, 2 ', 2' connected to the branch board 13, and when one of the hand mixers 1 becomes empty, By switching to the hand mixer 1, grout material can be obtained continuously. The switching may be performed manually by a handle operation or the like, or may be performed by automatic means for sensing the amount of grout material in the hand mixer 1.

  The grout material discharged from the secondary storage tank 7 by the discharge force of the secondary pumping pump 6 is injected from the injection port of the sleeve 10 by using the injection device 9 at the tip thereof from the injection hose 8. However, the injection device 9 can control the injection input or the injection amount and the start and stop of the injection.

  As described above, the adjustment of the injection amount of the grout material into the sleeve 10 and the temporary stop of the discharge when moving to the other sleeve 10 can be easily controlled at hand.

1 is a schematic view of a grout material injection system into a sleeve of the present invention. FIG. The top view which shows the state which connected several primary discharge hoses to the branch board.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hand mixer 2 Primary discharge hose 3 Primary pressure pump 4 Primary storage tank 5 Secondary discharge hose 6 Secondary pressure feed pump 7 Secondary storage tank 8 Injection hose 9 Injection device 10 Sleeve 11 Mount 12 Frame 13 switchboard

Claims (5)

    An appropriate number of small-capacity hand mixers for stirring the grout material, a primary pumping pump connected to the hand mixer via a primary discharge hose, a primary storage tank, the primary storage tank and the first A secondary pumping pump and a secondary storage tank connected via a secondary discharge hose, and an injection hose extending from the secondary storage tank for injecting a grout material in the secondary storage tank into the sleeve And a grout material injection system for a sleeve, characterized by comprising an injection device at the tip of the injection hose.     2. The grout material injection system for a sleeve according to claim 1, wherein the hand mixer has a small volume of 10L to 30L.     2. An appropriate number of small-capacity hand mixers are installed on a gantry, and the agitating means for agitating the inside of the container can be detachably fixed to a frame erected from the gantry. Or the grout material injection | pouring system to the sleeve of Claim 2.     4. The grout material injection system for a sleeve according to claim 1, wherein the injection device at the tip of the injection hose is provided with control means for opening and closing for injection and adjusting the injection amount.     A branch board is provided on the primary pumping pump that can be fitted with an appropriate number of primary discharge hoses that match the number of hand mixers, and the hand mixer can be selected by switching the primary discharge hoses. A grout injection system for a sleeve according to any one of claims 1 to 4.

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