JP2014043678A - Metal fitting for attaching safety prop to form - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that, regarding a metal fitting for attaching a safety prop to a form, there is no appropriate fixture means for the safety prop in the prior arts and there is a risk in high-place work due to the fact that a main rope is attached to a column reinforcement.SOLUTION: A metal fitting 1 for attaching a safety prop to a concrete form is a metal fitting for attaching, positioning and fixing the prop to the concrete form in a freely removable manner and comprises: a lower fixing part 5 which is fixed to a lateral wailing material 3 of the form while vertically holding the lateral wailing material; a lower holding member 6 which is a tubular body attached to the lower fixing part, is fitted with a lower portion of the prop and holds the prop; and an upper pressing metal fitting 7 which is attached to a batten cleat in a panel top end of the form in a freely removable manner and holds the prop.

Description

  The present invention relates to a formwork mounting bracket for a safety column that is fixed to a formwork for placing concrete in a building and is used for supporting a column such as a parent rope column or a handrail column for a safety fence.

  Conventionally, in the reinforced concrete (RC) structure construction, the master rope is installed on the beam form frame, for example, in the case of a large beam, a master rope is attached using a column reinforcing bar to prevent the worker from falling. Moreover, in the small beam, the main beam for the small beam is attached to the main beam stretched on the large beam. On the other hand, in order to prevent the fall on the slab at the boundary of the industrial zone, a master rope is attached to the pillar, or a safety fence is installed. As the safety posts for the formwork, those described in Reference Document 1 are known, and for safety handrails and the like (for balconies), those described in Reference Document 2 are known.

JP 2003-49542 A JP 2006-200163 A

  However, in the conventional method of laying the master rope, for example, since the master rope for the large beam is attached to the column reinforcing bar, it is a dangerous work to attach the master rope without safety equipment. In addition, the main beam of the small beam is further attached to the main beam stretched for the large beam, which is unstable in terms of strength and sagging and is against the law. In construction sites, it is an issue to be able to securely construct a master rope for safety of workers for safety measures without problems in terms of strength. The formwork mounting bracket for a safety column according to the present invention has been proposed in order to solve such a problem.

  The gist for achieving the object by solving the above-mentioned problems of the formwork mounting bracket for the safety column according to the present invention is a bracket for detachably mounting the column to the concrete formwork, A lower fixing part that is sandwiched and fixed to a thick material at the horizontal end of the formwork from above and below, and a cylindrical body that is attached to the lower fixing part is fitted to the lower part of the support to support the support. It consists of a lower support member and an upper presser foot that is detachably attached to a pier at the top of the panel of the mold and supports the support column.

  In the lower fixing portion, either the upper jaw portion or the lower jaw portion constituting the lower fixing portion is set to the base portion of the lower fixing portion in accordance with the vertical dimension of the lateral end thick material. Thus, there is provided a moving means that can move in the vertical direction.

  The moving means slides and moves the lower jaw, and is screwed into a screw hole provided in the base of the lower fixing portion by a screw bolt and engaged with the lower jaw by a bolt head. Sliding movement.

  A reinforcing member that resists expansion force is fixed to at least one of the upper jaw portion and the lower jaw portion of the lower fixing portion at the U-shaped portion of the jaw portion.

  The lower support member in the lower fixing portion is provided with an engagement groove for engaging the lock portion of the support column.

  The lower support member in the lower fixing portion is fixed to the lower fixing portion by fixing means, or is attached so as to be swingable at the lower portion of the cylindrical body.

Further, a reinforcing diagonal member is provided in which one end portion is connected to the upper presser foot or the support column and the other end portion is supported by a thick lateral end material.
In addition, when the master rope is locked to the support, it includes that a hook hardware having a latch fixed to a single clamp is detachably attached to the upper part of the support.

  According to the formwork mounting bracket for the safety strut of the present invention, in the construction site of the RC building, in the reinforcement work or the slab construction work after forming the formwork for concrete, the strut for the master rope and the master rope Can be attached in advance when the beam formwork is laid, and it is no longer possible to bend the column reinforcement by hooking the master rope to the column reinforcement as in the past. Work at height is also eliminated. In addition, it has an excellent effect that it can be easily used as a handrail pillar at the boundary of a work area or a handrail pillar mounting bracket for a safety fence of various openings.

  By making the lower support member in the lower fixing portion swingable, even if there is a bending of the lower end portion of the column in the field, it is possible to easily assemble the fitting position in a flexible manner. Furthermore, it is possible to withstand a large drop impact by providing the diagonal material. Moreover, by attaching the hook hardware to the column, the master rope or the like can be easily hooked.

It is an explanatory perspective view which shows the use condition of the mold mounting bracket 1 for the safety pillar which concerns on this invention. It is a partially expanded perspective view which shows the use condition of the lower support member 6 in the mold mounting bracket 1 for the safety pillars of the same invention. It is a perspective view from the front side in the use condition of upper presser foot metal object 7 concerning the present invention. It is a perspective view from the back side in the use condition of upper presser foot metal object 7 concerning the present invention. It is a perspective view of the lower support member 6 which concerns on the same invention. The lower jaw part 5b in the lower support member 6 which concerns on the same invention exists in a lower position, and is a rear view (A) and a side view (B) which show the state before moving up. FIG. 6 is a rear view showing a state in which the lower jaw portion 5b of the lower support member 6 according to the present invention is fixed to the lateral end thick material 3 after being moved upward by screwing in a bolt 9; It is a perspective view of the lower support member 6a which concerns on 2nd Example of this invention. It is a rear view of the lower support member 6a which concerns on 2nd Example of the same invention. It is the perspective view (A) which shows the use condition of the mold attachment metal fitting 1a which concerns on 3rd Example of this invention, and the top view (B) of the diagonal material 12 for reinforcement. They are the perspective view (A) and longitudinal cross-sectional view (B) which were seen from the upper presser foot metal object 7a which concerns on 4th Example of the same invention. It is the partially expanded perspective view (A) which shows the use condition of the lower fixing | fixed part 14 which concerns on 5th Example of this invention, and the perspective view (B) of the washer 16. They are a perspective view (A), a rear view (B), and a cross-sectional view (C) of another embodiment of a mold mounting bracket 1c according to a sixth embodiment of the present invention.

  As shown in FIG. 1, a formwork mounting bracket 1 for a safety support according to the present invention supports a support 4 using a formwork 2 for placing concrete and a thick material 3 at the side of the formwork. It is a thing.

  As shown in FIG. 1, the mold mounting bracket 1 is a bracket for detachably mounting and fixing a cylindrical metal column 4 to a concrete mold 2. The column 4 to be attached is, for example, a column for the master rope 4a at a construction site or a column for supporting a safety fence. Reference numeral 4b in the figure indicates a worker safety band.

  As shown in FIG. 2, the configuration of the mold mounting bracket 1 includes a lower fixing portion 5 that is fixed by being sandwiched from above and below the horizontal end thick material 3 of the mold 2, and a lower fixing portion 5. A lower support member 6 that is fitted to the lower portion of the support column 4 and supports the support column 4 with a cylindrical body to be attached, and as shown in FIGS. The upper presser foot 7 is detachably attached to the pier 2b at the panel top end 2a.

  Hereinafter, the details of each member will be described with reference to the drawings. As shown in FIG. 2, FIG. 4 to FIG. 5-A, and FIG. 5-B, the lower fixing portion 5 is fixed to the horizontal end thick material 3 and is fixed thereto. The upper jaw portion 5a and the lower jaw portion 5b each have a curved portion for locking a circular pipe in accordance with the outer shape (round shape in the first embodiment) and the vertical dimension of the side end thick material 3. It consists of.

  A moving means is provided that allows any one of the upper jaw portion 5a and the lower jaw portion 5b to move in the vertical direction with respect to the base portion 5c of the lower fixing portion 5. In the first embodiment, the lower jaw 5b moves up and down.

  The moving means is, for example, a screw type moving means shown in FIGS. This moving means is to move the lower jaw portion 5b to slide upward and is screwed into a screw hole 5d (see FIG. 4) provided in the base portion 5c of the lower fixing portion 5 with a screwed bolt 9. It is.

  That is, the bolt 9 is passed through the through hole 5e of the cylindrical part 5f provided integrally with the lower jaw part 5b. The head portion 9a of the bolt 9 is in contact with one end surface of the cylindrical portion 5f. When the bolt 9 is screwed into the base portion 5c, the lower jaw portion 5b is pushed up through the cylinder portion 5f pushed up by the head portion 9a. Thus, the lower jaw portion 5b is rotated in the vertical direction via the cylindrical portion 5f by rotating the bolt 9 in a predetermined direction with a tool or the like and screwing it into the screw hole 5d. The front end of the bolt 9 passes through the screw hole 5d of the base 5c and protrudes into the inner space of the cylindrical portion of the lower support member 6.

  As shown in FIG. 5-A (A), the lower jaw 5b is provided with a long hole 5m for moving in the vertical direction in a flat portion 5k that is flat in the vertical direction. Locking bolts 5n are erected by being fixed to the rear wall 5i of the upper jaw 5a by fixing means such as welding or press fitting through the long holes 5m.

  The locking bolt 5n prevents the lower jaw portion 5b from falling off from the upper jaw portion 5a when the mold mounting bracket 1 is assembled and then used in the vertical direction.

  The upper jaw portion 5a is integrated with the base portion 5c, which is a horizontal rectangular plate in use, and a reinforcing member 5g for reinforcement is integrally fixed as a side wall. As shown in FIG. 4, the reinforcing member 5g is a rectangular plate and is a metal plate in which a part of the long side portion on one side is cut obliquely.

  As shown in FIGS. 5-A (A) and (B), the reinforcing member 5g is integrally provided with a guide plate 5h along the vertical direction. A guide space for movement is formed between the rear surface of the rear wall 5i of the upper jaw portion 5a and the guide plate 5h, and the left and right edges of the lower jaw portion 5b are sandwiched in a loosely fitted state. 5b serves as a guide when moving up and down.

  In the lower fixing portion 5, a reinforcing member that resists an expansion force on the U-shaped portion of the jaw portion is provided on at least one of the upper jaw portion 5a and the lower jaw portion 5b. As shown, the reinforcing member 5j is fixed by welding means or the like.

  The lower support member 6 is provided with an engagement groove 6b in the upper part of the cylinder for engaging a locking pin (not shown) of the support column 4 protruding from the outer peripheral surface of the support column 4. In some cases, a locking pin may not be provided on the column side, and the engagement groove 6b may not be used.

  As shown in FIGS. 1 and 4, the upper presser foot 7 is to be locked from the outside to a wall 2b at the top of the panel of the mold 2, and is made of a metal hooking plate 7 b and the hook. It is comprised with the clamp 8 fixed to the one end side of the landing plate body 7b with the welding means.

  The hooking plate 7b is provided with locking portions 7c whose other ends are bent so as to be hooked on the corners of the perforated wood 2b, and holes 7d for nailing 13 provided in three places on the flat portion. It has been.

  In this way, as shown in FIG. 1, the support column 4 is attached to the mold frame 2 at the two positions of the upper presser foot 7 and the lower fixing member 5 and the lower support member 6 and is erected in the vertical direction. Is.

  The said support | pillar 4 is used for a master rope or a safety fence. As shown in FIG. 1, when the master rope 4 a is locked to the support column 4 attached to the mold mounting bracket 1 for the safety of work, the latch 11 a is fixed to the clamp 8 on the upper side of the support column 4. The hook hardware 11 is detachably attached. In this way, by using the formwork mounting bracket 1, the safety band 4b is hung on the master rope 4a, or the safety fence for preventing the fall is installed, so that the operator can be safe. It will be.

  As shown in FIGS. 6 to 7, the mold mounting bracket 1 a according to the second embodiment of the present invention is provided with a swingable lower support member 6 a on the lower fixing portion 5. The lower support member 6a has an upper U-shaped bearing portion 6c fixed to a base portion 5c of the upper jaw portion 5a, and a shaft member 6d is horizontally mounted on the bearing portion 6c. The lower support member 6a is supported by the shaft member 6d. The lower part of the member 6a is penetrated and supported. The front end of the bolt 9 enters the inside from the bottom of the cylindrical lower support member 6a, but is set so as not to reach the shaft member 6d.

  Since the lower support member 6a is pivotally supported by the shaft member 6d, when the mold mounting bracket is attached to the mold 2 and the column 4 is attached to the lower support member 6a, the column 4 is bent or assembled. Even if the position of the lower portion of the support column 4 is slightly shifted due to the positional displacement on the attachment, the upper portion of the lower support member 6a is swung to the left and right to be aligned and flexibly cope with it. Therefore, the support column 4 can be easily inserted into the lower support member 6a.

  In the third embodiment according to the present invention, as shown in FIGS. 8A and 8B, one end is connected to the upper presser foot 7 or the support column 4 and the other end is supported by the lateral end thick material 3. This is an embodiment in which a reinforcing diagonal member 12 is provided. The reinforcing diagonal member 12 is obliquely connected to the support column 4 via a rotatable connecting portion 12a. Further, the lower portion of the diagonal member 12 is connected to the lower fixing portion 5 through a connecting portion 12a so as to be swingable.

  According to the third embodiment, the reinforcing diagonal member 12 reinforces the support force of the support column 4 and can reduce the load caused by the impact load on the mold mounting bracket 1 even if the operator should fall. Is.

  A fourth embodiment according to the present invention is an upper presser foot 7a as shown in FIGS. The upper presser foot 7a is formed by fixing two L-shaped locking claws 7e to the clamp 8 by welding or the like. The locking claw 7c is locked so as to be gripped by the wall 2b of the mold 2. Also by such an Example, the mold mounting bracket 1 can be comprised.

  As shown in FIG. 10, the fifth embodiment according to the present invention relates to the structure of the lower fixing portion 14 in the case where the lateral end thick member of the mold 2 is a corner end thick member 15 made of a square pipe. . The lower fixing portion 14 is provided with a washer 16 on a U-shaped metal fixing portion main body 14a straddling two upper and lower corner end thick members 15, and the washer 16 is formed of foam tie (registered trademark). The fixing portion main body 14a is pressed to the mold 2 side by a connecting rod 18 and a tightening nut 19 connected to the cone 17.

  As shown in FIG. 10 (A), the fixing portion main body 14a is provided with reinforcing ribs 14b for reinforcement at four corners, and notches 14c for locking the washer 16 at the upper and lower central portions. Is provided. Further, the lower support member 6 is erected on the upper flat portion of the fixed portion main body 14a and fixed by welding means.

  Since the lower fixing portion 14 is firmly fixed by a connecting rod 18 and a tightening nut 19 connected to a cone 17 of a foam tie (registered trademark) for maintaining a space in the assembly of the mold 2, the safety is high.

  As described above, when the thick end member 15 is the thick end member 15, unlike the round pipe, the lower fixing portion 14 can be easily attached in the front-rear direction, and the fixing portion main body 14a is also simple in structure. Can be formed.

  In the sixth embodiment according to the present invention, as shown in FIGS. 11 (A) and 11 (B), the upper jaw 5b is tightened in the upper direction by the wedge 20 in the mold mounting bracket 1c. This is an example. That is, elongated holes 5q and 5p are provided in the vertical direction and penetrated in the lateral direction (horizontal direction) between the reinforcing members 5g and 5g of the upper jaw 5a and the reinforcing member 5j of the lower jaw 5b, and the holes 5q and 5p are provided. A wedge 20 to be inserted through is prepared.

  As shown in FIGS. 11A and 11B, the wedge 20 is inserted through the hole 5q of the reinforcing member 5g from the left to the right in the drawing, into the hole 5p of the reinforcing member 5j and the hole 5q of the reinforcing member 5g. And let it pass. Thereby, the taper portion 20b of the wedge 20 is penetrated and advanced, whereby the hole 5p is pushed upward, and the reinforcing member 5j and the lower jaw portion 5b move upward.

  The lower jaw portion 5b is attached to the lower horizontal end thick member 3, and is tightly tightened by the tapered portion 20b. In this state, the retaining member 21 is inserted into the retaining hole 20a. The relationship between the retaining hole 20a and the retaining member 21 can also be a retaining structure with a hole and a wedge-shaped retaining member 21, as shown in FIG. According to the vertical movement structure by the wedge fastening, it can be easily created with a simple configuration, and the tightening operation can be performed quickly.

  The formwork mounting bracket 1 according to the present invention can be attached to a concrete formwork and can support columns, safety fences, and the like provided for various uses.

1 Formwork mounting bracket,
1a Form mounting bracket according to the third embodiment,
1c Formwork mounting bracket according to the sixth embodiment,
2 Formwork, 2a Panel top edge,
2b pier,
3 Side end thick wood,
4 struts, 4a parent rope,
4b Safety belt,
5 Lower fixing part, 5a Upper jaw part,
5b lower jaw, 5c base,
5d screw hole, 5e through hole,
5f cylinder part, 5g reinforcement member,
5h guide plate, 5i rear wall,
5j reinforcement member, 5k flat part,
5m long hole, 5n locking bolt,
5p hole, 5q hole,
6 Lower support member, 6a Lower support member according to second embodiment,
6b engaging groove, 6c bearing part,
6d shaft member,
7 Upper presser foot, 7a Upper presser foot according to the fourth embodiment,
7b hanging plate body, 7c locking part,
7d hole,
8 Clamp,
9 bolts, 9a head,
11 Hook hardware, 11a Hasp,
12 Diagonal for reinforcement,
13 nails,
14 The lower fixing part of the fifth embodiment,
14a fixing part main body, 14b reinforcement rib,
14c Notch,
15 Square end thick wood,
16 washer,
17 corn,
18 connecting rod,
19 Clamping nut,
20 wedges, 20a retaining holes,
20b taper part,
21 retaining member.

Claims (8)

A metal fitting for removably attaching a column to a concrete formwork,
A lower fixing portion that is fixed by being sandwiched from above and below with respect to the thick end material of the mold,
A lower support member that is fitted to the lower portion of the column and supports the column with a cylindrical body attached to the lower fixing unit;
An upper presser foot which is removably attached to a pier at the top of the panel of the formwork and supports the support;
Formwork mounting bracket for safety struts characterized by In the lower fixing portion, either the upper jaw portion or the lower jaw portion constituting the lower fixing portion is set with respect to the base portion of the lower fixing portion in accordance with the vertical dimension of the side end thick material. Movement means to be movable in the vertical direction is provided,
The mold mounting bracket for a safety column according to claim 1. The moving means slides and moves the lower jaw part, and is screwed into a screw hole provided at the base of the lower fixing part by a screw bolt and engaged with the lower jaw part by the bolt head to slide the upper jaw. Moving,
The mold mounting bracket for a safety column according to claim 2. A reinforcing member that resists expansion force is fixed to at least one of the upper jaw part and the lower jaw part on the U-shaped part of the jaw part,
The mold mounting bracket for a safety column according to claim 2 or 3, characterized in that: The lower support member in the lower fixing portion is provided with an engagement groove for engaging the lock portion of the column,
The mold mounting bracket for a safety support according to any one of claims 1 to 4. The lower support member in the lower fixing portion is fixed to the lower fixing portion by fixing means, or is attached so as to be swingable at the lower portion of the cylindrical body,
The mold mounting bracket for a safety column according to any one of claims 1 to 5, wherein: There is provided a reinforcing diagonal that connects one end to the upper presser foot or support and supports the other end to the thicker side end,
The mold mounting bracket for a safety column according to any one of claims 1 to 6. When the master rope is locked to the support, a hook hardware having a latch fixed to a single clamp is detachably attached to the upper part of the support,
The formwork mounting bracket for a safety column according to any one of claims 1 to 7, wherein:

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