JP2000071235A - Anchor bolt mounting unit structure of form for manufacturing concrete product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an anchor bolt mounting unit structure of a form for manufacturing a concrete product for coupling between two opposed anchor bolts by a coupler by hitting the bolts by exposure in an end face of the product or a recess of the end to integrate divided and manufactured concrete products, applying a tensile stress between the bolts by the coupler to generate an axial force, and urging a contact surface by a pressing force. SOLUTION: The anchor bolt mounting unit structure of a form for manufacturing a concrete product comprises an end face member 60 having a plurality of recess part inserts 40 opened with insertion holes 30 of anchor bolts and fixed to the member 60 to project and embed threaded parts of the bolts to and in threaded parts 25 of the bolts in recesses 14 opened at an end of the product and insertion holes 80 for inserting female threaded parts 75 of clamping members 70 of the bolts and opened coaxially of the holes 30 of the member 60 and detachably mounted or openably pivotally secured to the end face of the form, and the plurality of the clamping members 70 for towing and clamping the parts 25 of the bolts projected into the holes 40 from the holes 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION In order to integrate concrete products that have been divided and manufactured, a conventionally used protruding reinforcing bar (reinforcing bar protruding from the end of the product is overlapped and cast in place concrete is cast. Instead of connecting both products), expose the anchor bolts in the end face of the concrete product or in the recess of the end (tightening between the facing anchor bolts of both products with a separately developed coupler and applying tensile stress to the anchor bolts) In addition, an axial force is generated to apply a pressing force to the end face of the product for connection.) The present invention relates to an anchor bolt mounting portion structure of a concrete product manufacturing form to be cast.

[0002]

2. Description of the Related Art FIG. 11 is an explanatory view of the prior art, and illustrates a retaining wall block which is divided and manufactured for rationalization of production, and subsequently connected and integrated for use. FIG. 11 shows a retaining wall block W1 and an extended bottom slab W2 manufactured separately.
In both cases, rebars (protruding rebars) D1 and D2 are protruded and set at the connection ends, and as shown in the lower part, the protruding rebars D
1 and D2 are overlapped by a predetermined size and cast-in-place concrete C is cast in the space to connect the two products W1 and W2.

FIG. 12 is a view showing the configuration of the end of a formwork for manufacturing the retaining wall block W1 and its extended bottom slab W2 (not shown), in which the protruding reinforcing bar D1 (D2) is embedded. A reinforcing bar holding portion made of a bush gb of a soft rubber or a polyurethane resin or the like is provided at an end portion e of the manufacturing mold so as to prevent leakage of the torro from the portion and to hold the projecting reinforcing bar D1 (D2); Alternatively, as shown in FIG. 13, a protruding reinforcing bar D1 (D2) penetrates the end face member (disposable) of the expanded polystyrene st and is projected out of the mold, and is cast from the upper portion of the mold in the same manner as described above. In addition, the code | s is a side plate of a manufacturing formwork, and co is a core which forms a back part.

However, in these concrete products, the process of joining (by bundling or welding) the projecting reinforcing bars D1 and D2 of both products becomes complicated, and the cast-in-place concrete C
However, there is a drawback that the construction period is long due to the curing period.

[0005]

2. Description of the Related Art In order to eliminate the above-mentioned drawbacks that required the splicing of a reinforcing bar and the casting of cast-in-place concrete at the use site of the prior art, the present applicant has already filed Japanese Patent Application No. 7-354.
It has been filed as an attachment device for the connection fitting for the 333 side groove / retaining wall block. In this application, there is provided a handling portion for simultaneously mounting a plurality of connection fittings or inserts with a plurality of anchor bolts via a holding member to a top end adjustment table which is a part of a manufacturing formwork. Depending on the shape, dimensions, number of products, etc. of the formwork related to the product to be manufactured, the end (end face) or the end of the manufacturing formwork may be provided without the handling section in order to reduce investment of the formwork. In many cases, it is desired to directly mount the threaded portions of the anchor bolts in the recessed nests provided at the ends, and a connection structure between the anchor bolts buried in both products and a concrete block of Japanese Patent Application No. 10-170972 and this. In order to connect the product abutting portion to be connected by applying a pressing force by a connecting device applied as a connecting device to be used, there has been a demand for an anchor bolt mounting portion structure of a concrete product manufacturing formwork.

[0006]

[0005] Since there are advantages such as simplification of the form and easy installation, reduction of the unit cost for installation, easy stocking, and effective use of the stock yard, there are advantages. When connecting concrete products, instead of connecting with conventional projecting rebars, an anchor bolt is exposed and cast at a predetermined position in the end face or the concave portion of the end of the concrete product, and the opposing anchor bolts are connected by the connector. An object of the present invention is to provide an anchor bolt mounting portion structure of a form for concrete product manufacturing which enables connection.

[0007]

SUMMARY OF THE INVENTION The gist of the present invention to solve the above-mentioned problem is that a concrete product manufactured by division is used in an integrated manner by coupling, so that a screw of an anchor bolt is screwed into a concave portion formed at an end. The anchor bolt mounting portion structure of the concrete product manufacturing formwork in which the cut portion is projected and fixed is fixed to the end face member of the manufacturing formwork by inserting a concave portion insert having an anchor bolt insertion hole. An insertion hole into which a female screw portion of a fixing member of an anchor bolt can be inserted on a coaxial line of the hole, and an end surface member detachably attached to an end surface of the manufacturing form or hinged so as to be openable and closable, and It is composed of a fixing member that pulls and fixes the threaded portion of the anchor bolt protruding into the recess. According to the above configuration, the threaded portion of the anchor bolt is driven at a predetermined position in the concave portion formed in the end portion so as to project at right angles to the end face member.

Further, in order to integrate and use the concrete products manufactured in a divided manner, a threaded portion of an anchor bolt is protruded into a recessed portion formed in an end portion and cast into the concrete product manufacturing form. The anchor bolt mounting part structure is mounted between the anchor bolt through which the recessed part pierced with the anchor bolt insertion hole is inserted and the end face member of the manufacturing form, and the anchor bolt is mounted on the coaxial line of the insertion hole. An end face member having an insertion hole into which a female screw portion of the fixing member can be inserted and detachably attached to an end face of the manufacturing form or hinged so as to be openable and closable, and an anchor bolt projected from the insertion hole into the recessed portion; And a fixing member for pulling and fixing the threaded portion. According to the above configuration, the threaded portion of the anchor bolt is driven at a predetermined position in the concave portion formed in the end portion so as to project at right angles to the end face member.

[0009] Further, in order to connect another block at a right angle to an arbitrary position on the side surface of the divided wall block, a concrete product is formed by directly projecting a threaded portion of an anchor bolt at an end to which the product is connected. An anchor bolt mounting part structure of the manufacturing formwork is provided with an end face member which is provided with an insertion hole through which an anchor bolt can be locked to penetrate, and which is detachably mounted on an end portion of the manufacturing formwork or pivotally attached so as to be freely opened and closed. And a fixing member for pulling and fixing the threaded portion of the anchor bolt protruding from the insertion hole. With the above configuration, the threaded portion of the anchor bolt is driven and set at a predetermined position on the end portion so as to project at right angles to the end face member.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments An anchor bolt mounting portion structure of a concrete product manufacturing form according to the present invention will be described below based on each embodiment.

FIG. 1 is a partial perspective view showing a main part of a first embodiment of an anchor bolt mounting portion structure of a concrete product manufacturing formwork of the present invention, and FIG. 2 is a concrete product manufacturing formwork of the present invention. FIG. 4 is a cross-sectional view showing a main part of the first embodiment of the anchor bolt mounting portion structure, and illustrates a case where the anchor bolt mounting portion structure is applied to a manufacturing form BK such as a beam or a flat block 10. In this embodiment, a divided beam or flat block 1 is manufactured.
In order to integrate and use the anchor bolts 2 in the four recesses 14 formed above and below the end of the product.
The anchor bolt mounting part structure of the concrete product manufacturing formwork in which the threaded part 25 of 0 is protruded and cast, the required number of recessed part inserts 40 in which the insertion hole 30 of the anchor bolt 20 is drilled at the tip, The upper surface or the lower surface of the recessed part insert 40 is aligned with the position corresponding to the outer surface of the product and is fixed to the end member 60 of the manufacturing form BK, and the anchor bolt 20 is fixed on the coaxial line of the insertion hole 30 of the end member 60. An insertion hole 80 into which a fixing member 70 to be inserted can be inserted is formed, and is removably attached (or pivotally attached to open and close) to the end face of the manufacturing form BK with a bolt bo1 or a bolt with a hole bo2 or the like. It comprises a body portion 78 formed by threading a female screw portion 75 that can be inserted into the threaded portion 80 and can be screwed into the threaded portion 25, a fixing member 70 having an engagement flange 72 having a large diameter, and a rotating head 74. Note that the symbol p
i and h are positioning pins provided at the end of the manufacturing formwork and positioning holes formed in the end face member 60. Reference numeral 76 of the female screw portion 75 of the fixing member 70 is a guide portion for facilitating the screwing. The threaded portion 25 of the bolt 20 is formed by joining a bolt having a head or a headless bolt by friction welding. In the case of a headless bolt, the friction welding portion 22 acts as a locking portion when inserted.

[0012] With the above structure, the insertion hole 3 can be formed at the time of driving.
0, the threaded portion 25 of the anchor bolt 20 is inserted into the recessed portion insert 40, and the fixing member 70 inserted into the insertion hole 80 of the end face member 60 is tightened, so that the anchor bolt 20 is pulled to a predetermined position. Firmly fixed.

At the time of removal from the mold, the fixing member 70 is removed, the end face member 60 is removed in parallel, and the beam or the plate-like block 10 is removed from the mold BK.
A product in which the threaded portion 25 of the anchor bolt 20 protrudes can be formed in the inside 4.

FIG. 3 is a partial perspective view showing a main part of a second embodiment of the anchor bolt mounting portion structure of the concrete product manufacturing formwork of the present invention, and FIG. 4 is a concrete product manufacturing formwork of the present invention. FIGS. 4A and 4B are cross-sectional views showing a main part of a second embodiment of the anchor bolt mounting portion structure, and both figures illustrate the case of a formwork BK for manufacturing a beam or a flat block 10 or the like. In the second embodiment, since the beams or the flat blocks 10 manufactured separately are connected and used, the threaded portions of the anchor bolts 20 are inserted into the four recesses 14 formed above and below the end of the product. The anchor bolt mounting portion structure of the concrete product production formwork in which the projecting 25 is protruded is formed by forming a hole 30 for the anchor bolt 20 at the tip of a required number of recessed inserts 40B, and forming the upper surface of the recessed insert 40B. (Or the lower surface) is aligned with the position corresponding to the outer surface of the product, and the end surface member 60 of the manufacturing formwork BK
And an insertion hole 80 through which a body portion 78 of a fixing member 70 for fixing the anchor bolt 20 is inserted on a coaxial line of the insertion hole 30 of the end face member 60 so that the body portion 78 can be inserted. Bolt b on the end face of
A torso portion 78 in which a female screw portion 75 which is removably attached (or pivotally openably and closably attached) with an o1 or a bolt with a hole bo2 or the like and which can be inserted into the insertion hole 80 and which can be screwed into the screw portion 25. And a fixing member 70 having an engagement flange 72 having a large diameter and a rotating head 74. The symbols pi and h correspond to the positioning pins and the end face members 6 provided at the ends of the manufacturing formwork.
0, the female screw 7 of the fixing member 70
Reference numeral 76 at the entrance 5 is a guide for facilitating screwing, and the threaded portion 25 of the anchor bolt 20 is formed by joining a bolt having a head or a headless bolt by friction welding.
In the case of a headless bolt, the friction welding portion 22 functions as a locking portion when inserted.

[0015] With the above structure, at the time of driving, the insertion hole 3
0, the threaded portion 25 of the anchor bolt 20 is inserted into the recessed portion insert 40, and the fixing member 70 inserted into the insertion hole 80 of the end face member 60 is tightened. It is firmly fixed at a predetermined position together with the part insert 40B.

At the time of removal from the mold, the fixing member 70 is removed and the end face members 60 are removed in parallel.
0 is removed from above the mold BK, and the recessed portion insert 40B is removed from the recessed portion 14, so that the anchor bolt 2 is inserted into the recessed portion 14.
A product in which the 0 threaded portion 25 projects can be formed. This is effective in the case where the recessed portion insert 40B has a product shape that cannot be removed at the time of removing the mold.

FIG. 5 is a partial perspective view showing a main part of a third embodiment of the anchor bolt mounting portion structure of the concrete product manufacturing formwork of the present invention, and FIG. 6 is a concrete product manufacturing formwork of the present invention. FIGS. 4A and 4B are cross-sectional views showing a main part of a third embodiment of the anchor bolt mounting portion structure, both of which illustrate a case of a manufacturing form BK for a beam or a flat block 10. In the third embodiment, since the threaded portion 25 of the anchor bolt 20 is protruded from the end face of the concrete product 10 to be buried in the concrete product 10, the anchor bolt of the concrete product manufacturing form is used in order to divide and manufacture the integrated product. An end face member 60 in which the mounting portion structure is provided with an insertion hole 30 through which the anchor bolt 20 can be locked and inserted, and is detachably mounted (or pivotally opened and closed) on the end of the manufacturing form BK; It comprises a fixing member 70 for pulling and fixing the threaded portion 25 of the anchor bolt 20 protruding from the insertion hole 30. Note that the symbol p
i and h are positioning pins provided at the ends of the manufacturing formwork and positioning holes formed in the end face member 60, and reference numeral 76 is a guide portion for facilitating screwing, and a threaded portion 25 of the anchor bolt 20 is provided.
Is a bolt having a head or a headless bolt joined by friction welding. In the case of a headless bolt, the friction welding portion 22 acts as a locking portion when inserted.

According to the above-described structure, at the time of driving, the threaded portion 25 of the anchor bolt 20 is inserted into the insertion hole 30 of the end face member 60, and the female screw portion 75 of the fixing member 70 is screwed and tightened. Is pulled, and the anchor bolt is firmly fixed at a predetermined position without moving when the concrete is compacted by the vibrator.

At the time of removal from the mold, the fixing member 70 is removed and the end face member 60 is removed, and then the block 10 is removed from the mold frame BK. A product with protruding shape can be formed.

FIG. 7 is a view showing a connector mounted between anchor bolts of products 10A and 10B to be connected.
00 comprises a female screw member 110 and a male screw member 120,
The female screw member 110 loosely fits into the threaded portion 25 projecting into the recess 14 of the product 10A and is locked from the inside by the locking nut N, while the male screw member 120 projects into the recess 14 of the product 10B. The female screw member 11
0 and the external thread member 120 are tightened to apply a tensile stress to generate an axial force on the anchor bolt 20.
A pressing force is urged to connect to the contact portion 11 of 0B.

The coupler 100 has one female screw member 1.
Since the gap G is provided in the insertion hole of the threaded portion 25 of 10, when the female screw member 110 and the male screw member 120 are screwed together, the axial error of both threaded portions 25 can be absorbed and the connection can be performed smoothly. After the connection, the non-shrinkable mortar M is filled in the concave portions 14 to increase the connection strength and to prevent rust and corrosion of the connector 100 and the like in the portion.

FIG. 8 is a view showing a manufacturing form BX for manufacturing by dividing a large culvert block to which the present invention is applied. This manufacturing form BX is a core Co fixed on a base frame Ba.
And both side plates S pivotally attached to both sides of the underframe Ba so as to be openable and closable.
And a bottom member (corresponding to an end member) 60 and a front and rear end plate T (a front end plate is not shown) which is mounted between the both side plates S and the core Co so as to be able to move up and down by the elevating mechanism J and is provided with a leakage prevention packing all around. The first and second members are provided on the bottom member 60.
The present invention described in the embodiment is applied, and
The threaded portion 25 of the anchor bolt 20 inserted through (B) is fixed and driven by the fixing member 70, and the product 10A, 1
0B is formed.

At the time of removal from the mold, the products 10A and 10B can be removed from the upper portion by opening the front and rear end plates T and both side plates S and extracting the fixing member 70 below the bottom member (corresponding to an end member) 60. .

FIG. 9 is a perspective view of a culvert block according to the present invention, in which manufactured products 10A and 10B are opposed to each other.
The connector 100 described above between the two threaded portions 25 in the recess 14.
The two products are integrated by tightening and used as a culvert block. In addition, the code | symbol pa is a water-stop packing which prevents water leak from a contact surface.

FIG. 10 shows that the threaded portion 25 of the horizontal T-shaped anchor bolt 20 projects perpendicularly to the wall surface in the middle of the wall block 10C according to the third embodiment of the present invention, and connects another block 10D. FIG. 4 is a perspective view showing a case, and the range of application to various products is expanded by such connection. For example, in the case of a vertically formed production form (punched upside down from the direction of arrow DA in the figure), the threaded portion comes off when the side plate on which the threaded portion 25 protrudes is removed from the mold. It is only necessary to move in parallel until the mold can be opened.

[0026]

As described above, since the anchor bolt is pulled and can be reliably fixed at a predetermined position, a positioning spacer is not required, and the displacement of the anchor bolt mounting position can be prevented by the vibrator at the time of placing the concrete product. . When the anchor bolts connecting the concrete products manufactured by division are buried, there is an effect that the axial error thereof can be slightly stopped. Furthermore, products manufactured by dividing and embedding anchor bolts have advantages such as simplification of the formwork and easy installation, reduction of the unit cost per unit, easy stocking, and effective use of the stock yard. .

[Brief description of the drawings]

FIG. 1 is a partial perspective view showing a main part of a first embodiment of an anchor bolt mounting portion structure of a concrete product manufacturing formwork of the present invention.

FIG. 2 is a cross-sectional view showing a main part of a first embodiment of the anchor bolt mounting portion structure of the concrete product manufacturing formwork of the present invention.

FIG. 3 is a partial perspective view showing a main part of a second embodiment of the anchor bolt mounting portion structure of the concrete product manufacturing formwork of the present invention.

FIG. 4 is a cross-sectional view showing a main part of a second embodiment of the anchor bolt mounting part structure of the concrete product manufacturing formwork of the present invention.

FIG. 5 is a partial perspective view showing a main part of a third embodiment of the anchor bolt mounting portion structure of the concrete product manufacturing formwork of the present invention.

FIG. 6 is a transverse sectional view showing a main part of a third embodiment of the anchor bolt mounting portion structure of the concrete product manufacturing formwork of the present invention.

FIG. 7 is an explanatory view of a coupler mounted between anchor bolts of a product to be coupled.

FIG. 8 is an explanatory view of a manufacturing formwork for dividing and manufacturing a large culvert block to which the present invention is applied.

FIG. 9 is a perspective view of a culvert block to which the present invention is applied.

FIG. 10 is a perspective view of a product in which a threaded portion of an anchor bolt protrudes at a right angle in the middle of a wall block according to a third embodiment of the present invention.

FIG. 11 is an explanatory diagram of a conventional technique.

FIG. 12 is an explanatory diagram of a conventional technique.

FIG. 13 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

 BK: Formwork for manufacturing beams or flat blocks BX: Formwork for manufacturing by dividing culvert blocks 10: Beams or flat blocks 14: Recessed portions 20: Anchor bolts 25: Screwed portions 30: Insertion holes 40 ° recessed part insertion 60 ° end member 70 ° fixing member 72 locking flange (of fixing member) 75 female screw part (of fixing member) 78 ° trunk (of fixing member) 80 ° insertion (of anchor bolt) Hole (of the fixing member drilled in the end face member) 100─ connector 110─ female screw member (of connector) 120─ male screw member (of connector)

Claims (3)

[Claims] 1. An anchor bolt mounting part structure for a concrete product manufacturing form in which a threaded portion of an anchor bolt is projected and buried in a recess formed in an end of a concrete product, the hole being an anchor bolt insertion hole. An insertion hole through which a fixing member of an anchor bolt can be inserted is formed on the coaxial line of the insertion hole of the end face member to which the plurality of recessed nests are fixed, and is detachably attached to the end face of the manufacturing formwork. Alternatively, an end face member which can be pivotally opened and closed freely, and a plurality of fixing members for pulling and fixing a threaded portion of an anchor bolt protruding from the insertion hole into the recessed portion insert are provided. Anchor bolt mounting part structure of formwork for concrete product production. 2. An anchor bolt mounting portion structure of a concrete product manufacturing formwork in which a threaded portion of an anchor bolt is projected and buried into a concave portion provided at an end of a concrete product, wherein the anchor bolt insertion hole is provided. A plurality of recessed inserts that can be drilled and pinched inside the end face member, and an insertion hole into which a fixing member of the anchor bolt can be inserted to be detachably mounted on the end face of the manufacturing formwork or pivotally opened and closed. A mold for concrete product production, comprising: a mountable end face member; and a plurality of fixing members for pulling and fixing a threaded portion of an anchor bolt protruding from the insertion hole into the recessed portion nest. Frame anchor bolt mounting structure. 3. A concrete product manufacturing formwork anchor bolt mounting portion structure for embedding and embedding a threaded portion of an anchor bolt on an end surface of a concrete product, wherein the anchor bolt is locked and inserted. An end face member which is provided with an insertion hole and is detachably attached to an end of the manufacturing formwork or pivotally connected so as to be openable and closable, and a plurality of towed and fixed threaded portions of anchor bolts protruding from the insertion hole. An anchor bolt mounting portion structure for a concrete product manufacturing formwork, comprising a fixing member.