JPH0674745U - Daihiki connector for concrete formwork - Google Patents

Abstract

(57) [Summary] [Purpose] A concrete pulling form puller that improves the workability and safety by firmly and firmly connecting and supporting the large pulling rods and the supports. Provide a connector. [Structure] Hooks (4), (5), (6), (6) provided with claw pieces (2), (3) protruding to the front, rear, left, and right opposite sides on the base plate (1) on the front and rear 7) is fixed, and is fitted between the front hooks (4) and (5) and the rear hooks (6) and (7) at the lower end or the upper end of one I-shaped large pull (8). The narrow groove (9) is formed between the left hooks (4) and (6) and the right hooks (5) and (7) in contact with each other. A wide groove (10) fitted to the lower end or the upper end is formed, and a connecting shaft (1) fitted in the hole (12) of the support (11) is formed on the lower surface of the base plate (1).
3) is projected to form a connecting tool for concrete formwork.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting tool for concrete formwork, which connects I-shaped formwork forming a concrete formwork.

[0002]

[Prior art]

 The conventional timber bar is used for this type of concrete formwork grab. And

(1) As shown in FIG. 13 and FIG. 14, when the large pulls (a) and (a) are used in abutment with each other, the connection ends of the large pulls (a) and (a) are Apply a peg or a veneer plate (b) to both sides to fix it (c), and then attach the top plate (e) of the support (d) to the bottom and insert a nail (f) into the nail hole of the top plate (e) to pull it up. (A), (a) are struck, and Daihiki (a), (a) and support (d) are connected to form a concrete formwork (g) for the floor.

(2) On the other hand, as shown in FIG. 15, in the case of using Daihiki (a) and (i) together, several wires are used in the superposed section of Daihiki (a) and (i). Drive the nail (c) diagonally from one of the large pulls (a) toward the other of the large pulls (a). A) and (A) are connected, and the connected Daihiki (A) and (A) are used in the same manner as above to form a concrete formwork for the floor.

[0005]

[Problems to be solved by the device]

 In the conventional concrete form pulling apparatus,

(1) Since Daihiki is a wooden lumber, its strength varies due to knots and sun cracks.

(2) Since the hajime is square, it is difficult to hold and the workability is poor.

(3) The connection of Daihiki and the connection of Daihiki and the support is unsafe because nails are struck or the support is tied with a tie wire.

(4) It is uneconomical to use nails, shackles, plywood, numbered wires, etc., which are used for connecting large hauls only once and become unnecessary materials each time.

(5) After the work, unnecessary materials such as nails, splints, veneer boards, and number wires are scattered on the work site and remain unsafe.

(6) Since the support is fixed to the Daihiki with nails, it is uncertain that the support is fixed to the Daihiki, and the support may come off from the Daihiki, which is a safety problem. .

[0012]

[Means for Solving the Problems]

 The present invention provides a connecting tool for a concrete formwork, which facilitates and reliably connects the formwork and the support, and firmly assembles and supports the concrete formwork to improve workability and safety. The purpose is to do.

That is, the hooks (4), (5), (6) provided with the claw pieces (2), (3) protruding to the front, rear, left, and right opposite sides on the front and rear, and the left and right on the base plate (1). , (7) are fixed, and the space between the front hooks (4), (5) and the rear hooks (6), (7) is at the lower end or the upper end of one I-shaped Daihiki (8). A narrow groove (9) slidably fitted is provided between the left hooks (4) and (6) and the right hooks (5) and (7) in contact with each other to form two I-shaped pulling wires ( 8), wide grooves (10) slidably fitted to the lower end or the upper end of (8) are formed, respectively, and the lower surface of the base plate (1) is inserted into the hole (12) of the support (11). A connecting shaft (13) that can be detachably fitted is projected to form a connecting tool for a concrete formwork, and the concrete form can be easily and reliably connected to the concrete form. For the purpose of firmly assembling and supporting the frame to improve workability and safety, an I-shaped Daihiki is used, and a connecting tool is fitted to the I-shaped Daihiki and the connecting shaft of the connecting tool is provided with a support hole. It was realized by fitting the above, connecting the Daihiki with a connecting tool, and connecting the Daihiki to the support and supporting the Daihiki with the support.

[0014]

【Example】

 1 to 12 show an embodiment of the present invention, the structure of which will be described with reference to the drawings. (A) shows a pulling tool for concrete formwork, and (1) shows a connecting tool (a). ) A hook (4) having a horizontally long quadrangular base plate provided with claw pieces (2) and (3) projecting to the front and rear and left and right opposite sides at four front and rear left and right corners on the base plate (1). , (5), (6), (7) are fixed and one I-shaped pulling hook (8) is provided between the front hooks (4), (5) and the rear hooks (6), (7). ) A narrow groove (9) slidably fitted to the lower end or the upper end is provided between the left side hooks (4) and (6) and the right side hooks (5) and (7) in parallel. A wide groove (10) slidably fitted to the lower end or the upper end of each of the two I-shaped pulls (8) and (8) is formed, and the central portion of the lower surface of the base plate (1) is formed. Support (11 A connecting shaft (13) that is detachably fitted is provided in the hole (12) of the base plate (1) so that a nail hole (14) is formed at the center of both side portions of the base plate (1) and a nail hole ( 15) are drilled respectively.

(A) shows a concrete formwork of the floor, (8) is an I-shaped large drawing, H-shaped cross section made of a metal such as aluminum and having projecting edges (16) formed on the outer sides of the upper and lower ends. Wooden square timbers (18) are fitted and fixed in the upper and lower voids of the Daihiki body (17), respectively, and a through hole (19) is formed at an intermediate position in the vertical direction of the I-shaped Daihiki (8). Drill at appropriate intervals. Reference numeral (20) is a connecting bolt, which is formed in an L shape and is provided with a screw (22) at the tip of the long piece (21), and the long piece (21) of the connecting bolt (20) is I-shaped. ) Is inserted into the through hole (19) at one end, and the short piece (23) is fitted into the through hole (19) located on the inner side of the through hole (19) so that the protruding screw () of the long piece (21) ( The nut (24) is screwed onto the nut (22), the screw (22) of the long piece (21) is projected forward from the I-shaped pull (8), and the connecting bolt (20) is pulled into the I-shaped pull (8). Fix at the end of 8). (25) is a nail for fixing the connector (a).

(11) is a support, (12) is a hole in the support (11), (26) is a top plate of the support (11), (27) is a joist made of a round pipe, and (28) is a floor dam plate. , (29) are concrete floors constructed on the floor dam plate (28). The length of the connecting shaft (13) of the connecting tool (a) is shorter than the diameter of the joist (27).

The usage of the connecting tool will be described.

(1) When the Daihiki (8) and (8) are used in abutment with each other, connecting tools are attached to the lower ends of the Daihiki (8) and (8), respectively, as shown in FIGS. 4 to 6. Fit the required number of connectors (a) by fitting the narrow groove (9) of (a), and move one connector (a) up and down on the upper end of one of the large pulls (8). Reverse and fit.

Then, the Daihiki (8) and (8) are butted, and the nut (24) of the connecting bolt (20) of one Daihiki (8) is unscrewed to remove the short piece (23) of the connecting bolt (20). After the connection bolt (20) is pulled out from the through hole (19), the connecting bolt (20) is rotated 180 ° outwardly about the long piece (21) of the connecting bolt (20) so that the short piece (23) of the connecting bolt (20) becomes larger. The nut (24) of the connecting bolt (20) is screwed into the through hole (19) of the pull (8) to fix the connecting bolt (20) to the large pull (8).

Next, the upper and lower connecting tools (a) are moved to the other side of the large pull (8), and are fitted over the large pulls (8) and (8) as shown in the right side of FIG. After that, the nails (25) are passed through the nail holes (14) of the connecting tool (a) from above and below and driven into the square bar (18) of the Daihiki (8) to connect the Daihiki (8) and (8) to the connecting bolt ( 20) and the upper and lower connectors (a).

On the other hand, as shown in the left side of FIG. 3, the other connecting tools (a) fitted to the Daihiki (8) and (8) are respectively moved to appropriate positions of the Daihiki (8). Secure with nails (25) as above.

After that, the holes (12) of the support (11) are fitted into the connecting shafts (13) of the respective connecting tools (a), the support (11) is erected, and the support (11) pulls the support (11). 8) is supported, the joists (27) are combined on the Daihiki (8), and the floor dam plate (28) is laid on the joists (27) to form the form (A).

(2) When tying and using the Daihiki (8) and (8), as shown in FIGS. 8 to 10, connecting tools are attached to the lower ends of the Daihiki (8) and (8), respectively. The narrow groove (9) of (a) is fitted and the required number of connectors (a) are fitted.

Then, as shown in FIG. 9, the protruding screw (22) of the connecting bolt (20) of the other large pull (8) is inserted into the through hole (19) of the one large pull (8). After pulling in and pulling the Daihiki (8) and (8) into contact with each other, the wide grooves (10) of the connecting tool (a) are fitted respectively above and below the overlapping portion of the Daihiki (8) and (8). The nails (25) are inserted through the nail holes (15) on both sides of the connector (a) and driven into the square bar (18) of the two pullers (8) to connect the pullers (8) and (8) to the connecting bolt (20). And the upper and lower connectors (a) are connected and fixed.

After that, the same operation as above is performed to support the Daihiki (8) by the support (11) to form the form (A).

At that time, when the Daihiki (8) and (8) are used while being slightly shifted at the end of the construction and the like, the Daihiki (8) and (8) are not in the necessary shifted state. As shown in FIG. 9, the protruding screw (22) of the connecting bolt (20) of the other large pull (8) is inserted into the appropriate through hole (19) of the one large pull (8) and the large pull (8) is inserted. ), (8) are contacted in parallel, and then the wide groove (10) of the connector (a) is fitted at the upper and lower ends of the overlapped portions of the large pulls (8) and (8), respectively. Then, fix it with nails (25) and connect the haiki (8) and (8) with the connecting bolt (20) and the upper and lower connectors (a) on both sides. Can be used to form a form (A).

(3) When the Daihiki (8) and (8) are used in parallel, the Daihiki (8) and (8) are slightly shifted as shown in FIG. 11 and FIG. Insert the protruding screw (22) of the connecting bolt (20) of the Daihiki (8) into the through hole (19) of one of the Daihiki (8) to contact the Daihiki (8) and (8) in parallel. Then, the wide grooves (10) of the connector (a) are provided on both sides of the upper ends of the large pulls (8) and (8), and the required number of the wide grooves (10) of the connector (a) are provided at the lower end. ) Are respectively fitted, the connecting tools (a) are fixed to the large pulls (8), (8) by the nails (25) at the required positions, and the large pulls (8), (8) are connected to the connecting bolts (20). ) And connecting tools (a) above and below both sides, and fixed and connected, and the molds (A) can be constructed by using the large pulls (8) and (8) in the same manner as above.

[0028]

[Effect of device]

 INDUSTRIAL APPLICABILITY The concrete pulling tool for concrete formwork has the following advantages.

(1) Since the I-shaped pulling rod is used, the pulling rod is easy to hold, safe and workable.

(2) A hook provided with claw pieces projecting to the front and rear and left and right opposite sides is fixedly provided on the front and rear left and right on the base plate of the connecting tool, and one hook is provided between the front and rear hooks. The narrow groove that fits on the lower end or the upper end of the I-shaped Daihiki is placed in contact between the left and right hooks. Each groove was formed. Therefore,

(B) Whether the daihiki is butt-jointed, tie-in, or parallel, the connector can be used in combination, and only one type of connector is required, which is convenient for transportation, storage, and handling, and improves work efficiency. improves.

(B) Since the groove of the connecting tool is fitted to the lower end or the upper end of the Daihiki, the connecting tool is attached to the Daihiki regardless of whether one or two Daihiki are tied together. Attaching the coupling to the Daihiki is easy and reliable.

(C) When tying two connecting pieces to each other or fitting two connecting pieces in parallel with each other, the connecting piece is surely and firmly attached to the connecting piece, and the connecting piece has two connecting pieces. Hold and hold two Daihiki in parallel.

(3) Since the connecting shaft to the support is projected on the lower surface of the base plate of the connecting tool, when the hole of the support is fitted into the connecting shaft and the large pull is supported by the support, the large pull of the connecting tool is pulled. In addition to the fitting, the large pull and the support are securely connected and held by the connecting tool, which is easy to work and is beneficial for safety.

(4) The connector is economical as it can be diverted many times and can be used semi-permanently.

(5) Since there is no unnecessary material used for assembling the formwork, the work site is always clean and clean, there is no danger, and the feet are safe.

(6) It can be easily and inexpensively manufactured with a simple and compact structure.

[Brief description of drawings]

FIG. 1 is a front view of a concrete pulling tool for a concrete formwork according to an embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a side view of the same.

FIG. 4 is a front cross-sectional view showing a state in which a mold is configured by using the above-mentioned connecting tool and abutting I-shaped Daihiki.

FIG. 5 is an enlarged plan view of the main part of the Daihiki support, showing an intermediate part cut away and a part cut away.

FIG. 6 is an upper sectional view of the same.

FIG. 7 is an exploded perspective view of the same as above.

FIG. 8 is a front view of a main part in a state where two large hauls are connected to each other by using the connecting tool and a middle part is cut away.

FIG. 9 is a plan view of the same as above, in which a middle portion is cut away and a part is cut away.

FIG. 10 is an upper sectional view of the same.

FIG. 11 is a front view showing a state in which two Daihikis are contact-connected in parallel by using the connecting tool, and a middle portion is cut away.

FIG. 12 is a plan view of the same as above, in which a middle portion is cut away and a part is cut away.

FIG. 13 is a front cross-sectional view showing a state in which a mold is constructed by butting conventional Daihiki.

FIG. 14 is a plan view of the Daihiki connecting section.

FIG. 15 is a plan view of a connecting portion in a state in which two conventional large hauls are connected to a tie.

[Explanation of symbols]

 a Connecting tool A Concrete formwork 1 Base plate 2 Claw piece 3 Claw piece 4 Hook 5 Hook 6 Hook 7 Hook 8 I-shaped large pull 9 Narrow groove 10 Wide groove 11 Support 12 hole 13 Connecting shaft 14 Nail hole 15 Nail hole 16 Projection edge 17 Daihiki main body 18 Wooden square bar 19 Through hole 20 Connecting bolt 21 Long piece 22 Screw 23 Short piece 24 Nut 25 Nail 26 Top plate 27 Joist 28 Floor dam plate 29 Concrete floor I Daihiki Ro pier or plywood Ha nailing Nisupportho Top plate nail concrete formwork

Claims (1)

[Scope of utility model registration request] 1. A hook having claw pieces projecting to the front, rear, left, and right opposite sides is fixedly mounted on the base plate in the front-rear and left-right directions, and one I-shaped large-sized member is provided between the front hook and the rear hook. A narrow groove slidably fitted to the lower end or the upper end of the pull is slidable to the lower end or the upper end of two I-shaped Daihiki which are in parallel between the left hook and the right hook. A large-drawing connecting tool for concrete formwork, each of which is formed with a wide groove to be fitted therein, and has a connecting shaft which is detachably fitted into a hole of a support on the lower surface of the base plate.