JP4182502B2 - Filling device by spiral rotation - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an apparatus for filling an internal space of a structure under construction with a construction material.
[0002]
[Prior art]
Conventionally, a grout pump is mainly used for filling with various fillers such as cement paste and resin that fills the space around rebars, steel bars, steel wires and backfilling in construction work. It was.
[0003]
[Problems to be solved by the invention]
However, the press-fitting required sealing of the path and space, and it took time to manufacture these. In addition, it took time and labor to maintain the pump and clean it after use. Furthermore, the fillers are limited to the types that fit the pump, their physical properties are narrowly limited, and determining and maintaining fluidity requires experience and skill. Further, in the press-fitting, there is a drawback that a cold joint can be formed depending on the material because the filler deforms while being pressed against the wall surface while maintaining the interface. Further, since reverse feeding is not possible, it is almost impossible to eliminate what has been once filled for correction or demolition.
[0004]
The object of the present invention is to perform the filling operation and its preparation operation mechanically in a simple procedure by omitting the use of the grout pump, simplify the selection of the filler and the management of the operation, and make the material flexible. It is another object of the present invention to provide a means for reducing voids to increase the packing density, preventing the occurrence of cold joints by rubbing against the wall surface, and enabling reverse feeding in some cases.
[0005]
[Means and Actions for Solving the Problems]
According to the present invention, as in claim 1, in a construction under construction, a filling space of an arbitrary length having an arbitrary shape around a linear material such as a reinforcing bar or a sheath tube in a reinforced concrete. And a replenishing port are prepared, the two are continuous in a path space, the filling space has a space to be filled, and the replenishing port stores a filler whose hardness changes with time or temperature change. The supply port is provided with a charging port for supplying an arbitrary amount of the filler, a spiral is provided in at least a part of the space from the supply port to the filling space, and the filler is rotated by rotating the spiral. Using the filling device by rotating the spiral, which is characterized by filling the filling space, filling the space of arbitrary shape, eliminating the use of grout pump, eliminating troublesome management and filling restrictions at the same time It is.
[0006]
The arrangement of the spiral is prepared as an independent part, the linear material and a series of strips are wound, or a set of small protrusions is spirally arranged on the surface of the linear material. When the helical body is rotated in the viscous body, it proceeds in a certain direction by screw action. In particular, fin-like protrusions made of flexible plastic or the like function as paddles, and the filling efficiency is remarkably improved. In addition, the removal rate of the filler by reversing for correction is also improved. Therefore, when the spiral is fixed and rotated in the filler, the filler is pushed in one direction. Thus, the filler can be filled in a desired position by the screw action of the spiral. This function solves the above problem.
[0007]
In addition, the rotation of the helix pushes the filler directly mechanically, so that filling is possible even if the fluidity and blending changes. Therefore, it is possible to provide flexibility in selecting the filler. As a result, it is possible to fill a desired position with a desired filler having different physical properties. That is, by sending the filler to the replenishing unit in a predetermined order, it is possible to fill the fillers with arbitrary strengths and workability suitable for the filling positions and with different specific gravity and thermoplasticity. When a thermoplastic material is used as the filler, the physical properties of the filler can be changed at an arbitrary time by controlling the temperature. This makes it easy to correct and tear down even after completion of construction. In addition, since mixing is continued while the filler is moved by the rotation of the helix, the mixture such as cement mortar can be filled without material separation. When the protrusions having a shape and rigidity corresponding to the physical properties of the filler are arranged in a spiral shape and rotated, the mixing effect is further increased.
[0008]
If the above-described series of flows are arranged, the filler charged from the charging port is stored in the replenishing port, and is pushed into the charging space by the rotation of the spiral to be filled. Rotation of the helix that is the basis of this mechanism is to insert a rotating shaft from the other end or another hole, to lock the locking force with a locking pin etc., and to remove the lock pin at the appropriate time, or to embed There are various means to use a motor and to be selected according to construction conditions.
[0009]
By having the filling space formed by embedding a tubular body such as a steel pipe depending on the construction conditions, formation of the filling space is facilitated and deformation of the filling is constrained three-dimensionally to significantly increase the strength. . When this device is used for a reinforcing bar anchor or joint, the restraint strength can be increased and the filling effect can be remarkably improved.
[0010]
Depending on the construction conditions, in the formation of a helix , a spiral material is wound around the surface of a linear material such as the reinforcing bar to form a helix, thereby facilitating the production of the helix and extrusion by rotation. Further, when this helix is cured together with the filler, the pulling strength is increased. In particular, if the reinforcing bars of the lap joint are made of a linear material, the construction is completed with the filling operation completed, so the post-processing is omitted and the formation of voids is prevented. To do.
[0011]
Depending on the construction conditions, when the helix is coupled to a flexible wire and the helix is rotated remotely via the flexible wire, a filling operation of rotating from the outside via a curved path becomes possible. This has been impossible in the past.
[0012]
In addition, when at least a part of the flexible wire is deformed into a spiral shape and used as the spiral, it is possible to perform a filling operation of a complicatedly bent hole or a deformed space.
[0103]
As in claim 2, the spiral is caused to wait in a part of the filling space or a space prepared in the standby space in advance , and the spiral is moved by rotation at a desired time. A mechanical filling operation through a curved path is possible. For example, in the joining of two prefabricated members, the helix and the rebar are moved to the opposite side in one member, overlapped with the rebars of both members, and the periphery of them is filled continuously. It is possible to form a lap joint and to easily unify both the reinforcing bars.
[0104]
DETAILED DESCRIPTION OF THE INVENTION
As described in the embodiment, a reinforcing bar is fixed inside a filling space provided in existing concrete. A reinforcing rod, which is a linear material, is inserted into the filling space, and the filler is grouted around it. That is, it is possible to mechanically fill a desired place at a desired time at a desired time and reversely feed the material with a very simple mechanism without using any special technique or material.
[0015]
【Example】
An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of Example 1 in which cement concrete bodies A and B, which are to-be-filled bodies 5, are coupled by reinforcing bars. This rebar is a linear material 2. Grouting cement paste as filler 3 around the reinforcing bar. Thus, the hardened filler is triaxially constrained by the steel pipe when the rebar is loaded and significantly increases the bond. The filling space 4 is formed by embedding a thin steel pipe. This makes the filling space very simple. Note that the boundary surface between the concrete bodies A and B, which are to-be-filled bodies, is a discontinuous surface that is seen due to a contact surface between the precast members or a crack in the concrete. FIG. 2 is a side sectional view thereof.
[0016]
An elongated filling space 4 is formed in advance in the filling bodies 5 of A and B. Both filling spaces 4 are continuously connected and penetrated. Pass the linear material 2 (rebar) through the filling space 4. The helix 1 is prepared by winding a thin annealed iron wire around a reinforcing bar in advance. Fill the filler 6 with the filler 3 from the inlet 7. Reinforcing a reinforcing bar (linear material 2) from the end 8 of the concrete body, applying a rotational force to the end, and rotating the helix 1. By this rotation, the filler 3 is gradually sent from the replenishing port 6 toward the A filling space 4 to fill the entire filling space 4. In some cases, the same function can be obtained by reversing the rotation of the helix even if the positions of the charging port 7 and the replenishing port 6 are set to the left side. By filling the spiral with the filler 3 as it is, the generation of voids can be prevented. Usually, the filler 3 is cement paste or mortar. However, if a thermoplastic material such as plastic or sulfur is used and heating is performed using a nichrome wire or the like, the temperature can be arbitrarily changed and the strength of the filler can be controlled. Correction and elimination are also possible.
[0017]
FIG. 3 is a side cross-sectional view of a second embodiment in which prefilled concrete bodies A and B to which the above-described embodiment is applied are joined by a lap joint. Both are reinforced by the respective reinforcing bars, and the linear material 2 of this embodiment forms a lap joint with each main reinforcing bar 9, so that both concrete bodies are integrated with the linear material 2.
[0018]
A flexible wire 10 is bonded to the end of the linear material 2. The flexible wire 10 in the concrete body A is covered with a sheath material 15 to ensure smooth rotation. The linear material 2 and the helix 1 are rotated away from each other through the flexible wire 10. The combination of the flexible wire 10 and the sheath material 15 enables transmission of rotation even in a curved path in the concrete body. The material of the sheath material 15 is made of thermoplastic vinyl, a nichrome wire is wired inside, and optionally energized and heated. At normal temperature, the sheath material 15 is protected and rotated while being softened by heating.
[0019]
In addition, a space that is a standby space 14 is provided by preliminarily extending the concrete filling space 4 in advance. The spiral 1 and the linear material 2 (reinforcing bar) are inserted into the space and made to stand by, rotated at the time of construction, and moved in the direction of the inlet 7. When this method is used, the reinforcing bars can be easily moved even after the surfaces of the precast concrete are brought together. The movement of the spiral 1 and the reinforcing bar can be confirmed from the insertion port 7. Since the filler 3 is thrown in after the confirmation, rebar connection is ensured. That is, by providing the standby space 14, it is possible to complete the reliable rebar connection in a very short time. If appropriate protrusions are scattered on a part of the wall surface of the filling space 4, the movement of the spiral 1 and the linear material 2 by rotation is made faster and more reliable. These protrusions also improve the shear strength between the hardened filler and the wall surface.
[0020]
In addition, when the torsional rotation of the helix is intermittently applied to apply torsional vibration or vibration is applied by a vibration machine, the filler is softened, and the strength and density of the filler and the construction speed are improved.
[0021]
【The invention's effect】
As described above, the present invention has the following effects when used for reinforcement of a lap joint, an anchor reinforcing bar, a peeling danger part, or a cold joint part in construction work. Even in difficult-to-fill spaces, simple filling and work can be performed reliably. Fillers having different properties can be filled in a desired position. The adhesion strength between the filler and the wall surface is increased and the two are firmly integrated. Increase the density of the filler to increase the strength. Optionally allows reverse feeding of the filler.
[Brief description of the drawings]
FIG. 1 is a perspective view of a first embodiment of the present invention.
FIG. 2 is a side sectional view of the perspective view.
FIG. 3 is a side sectional view of Embodiment 2 of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Spiral 2 Linear material 3 Filling material 4 Filling space 5 Filled body 6 Supply port 7 Input port 8 End part 9 Main reinforcement 10 Flexible wire 14 Waiting space 15 Sheath material

Claims (2)

In the construction under construction, two spaces, a filling space having an arbitrary shape around the linear material arranged linearly, and a replenishing port are formed, and both are continuous in a path space. Has a space to be filled, the replenishing port stores a filler whose hardness changes with time or temperature change, and the replenishing port is provided with a charging port for replenishing an arbitrary amount of the filler. An apparatus for filling by rotation of a helix characterized in that a helix is provided in at least a part of a space from to the filling space, and the filling material is filled into the filling space from the replenishing port by rotating the helix.   2. The filling device according to claim 1, wherein the spiral is made to wait in a waiting space in advance, and the spiral is moved by rotation at a desired time.

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