JP2020139388A - Temporary floor material and gripping metal fitting thereof - Google Patents

Abstract

To improve a workability of a temporary floor material removal work for removing a temporary floor material erected or suspended between horizontal members by a gripping metal fitting and to reduce a burden or a load on the work of an operator in removal work.SOLUTION: A temporary floor material (1) has a pair of left and right movable hook type gripping metal fittings (10) at an end of a floor material body, and a body part (11) of the gripping metal fitting comprises a base part (11a) fixed to the floor material body and a seating surface (17) seating on an upper half part outer periphery surface of a horizontal member. The gripping metal fitting has coming-off stop members (5, 12) and movable hooks (13, 60). The coming-off stop member comprises horizontal member engaging surfaces (5b, 12a) extending along a lower half part outer periphery surface of the horizontal member at a side of the floor material body. The movable hook is supported by the body part rotatably or displaceably in-plane and comprises horizontal member engaging surfaces (13a, 13d, 61, 62) extending along the upper half part outer periphery surface of the horizontal member at an opposite side to the floor material body. The coming-off stop member prevents a prescribed dimension or more of an upward displacement of the gripping metal fitting, and the seating surface or the horizontal member engaging surface restricts a horizontal displacement of the gripping metal fitting.SELECTED DRAWING: Figure 6

Description

The present invention relates to a temporary floor material and its gripping metal fittings, and more specifically, it is erected or suspended between adjacent horizontal members or the like by a gripping metal fittings that engage with the horizontal members or the like of the temporary scaffolding, and is temporarily installed. It relates to a temporary floor material forming a work passage or a work floor of a scaffold and its gripping metal fittings.

As temporary scaffolding used for construction work of buildings, civil engineering structures, plant equipment, etc., various types of temporary scaffolding such as framework scaffolding, single pipe scaffolding, and wedge-coupled scaffolding are widely used in Japan. As a temporary floor material constituting a work passage or a work floor in a frame scaffold or a wedge-coupled scaffold or the like, "cloth frame with floor" (cloth frame with floor) is known (Patent Documents 1 to 4, Non-Patent Document 1). ). A cloth frame with a floor (cloth frame) is a temporary metal floor material having a structure in which a floor material, a cloth material, a beam material, a gripping metal fitting, etc. are integrally assembled. Regarding the structure of each part of the cloth frame with a floor, Relatively strict standards are set (Non-Patent Document 2). For example, as a general rule, the gripping metal fitting is required to have "a stopper for preventing lifting from the horizontal member of the building" as described in Non-Patent Document 2.

Generally, a cloth frame with a floor has a pair of left and right grip fittings at both ends. The hook portion of each grip metal fitting is locked to the horizontal member of the building (building frame) or the arm wood wedge-bonded to the left and right columns. Each grip metal fitting has a gravity-type self-locking mechanism, and the hook part of the grip metal fitting is a horizontal member or arm tree (hereinafter referred to as horizontal material, arm tree, girder material, beam material, etc.). When the horizontal member or horizontal member for load support is collectively referred to as "horizontal member"), the self-locking mechanism automatically interlocks with this locking operation to attach the grip metal fitting to the horizontal member. Locks the hook part with respect to the horizontal member. Thus, each gripping bracket is self-lockingly moored on the cross member, but the self-locking mechanism must be manually released when the floored cloth frame is removed from the cross member. 23 (A) and 23 (B) illustrate the process of removing the conventional cloth frame 100 with a floor from the horizontal member B of the building frame A. When removing the floored cloth frame from the horizontal member when disassembling the scaffold, as shown in FIG. 23 (A), the gravity type self-locking mechanism of the grip metal fittings 104 provided at both ends of the floored cloth frame 100 is used. Either manually release the floored cloth frame 100 substantially at the same time to lift the floored cloth frame 100 as a whole, or as shown in FIG. 23 (B), the gravity type self of the grip fitting 104 provided at one end of the floored cloth frame 100. The locking mechanism is manually released to lift one end of the floored cloth frame 100, and while maintaining the inclined state, the gravity type self-locking mechanism of the grip fitting 104 provided at the other end of the floored cloth frame 100 is used. It will be necessary to manually release and further lift the other end of the floored cloth frame 100. The former floored cloth frame removal work is a work form that requires a plurality of workers (hereinafter referred to as "workers") to remove one floored cloth frame, and therefore, in practice. , Not often adopted. On the other hand, the latter work of removing the cloth frame with a floor is a work that can be performed by the worker alone, and this is a generally adopted work form, but since the burden on the worker is relatively heavy, the work It is desirable to reduce the burden on.

Patent Document 5 describes a cloth frame with a floor configured so that the gravity-type self-locking mechanism for preventing the detachment can be transiently held in an released state as a measure for reducing the work load when removing the cloth frame with a floor. Has been done. In the cloth frame with a floor having this configuration, the grip metal fitting can be lifted and placed on the horizontal member immediately after the stopper is released, so that the load at one end is transiently supported or supported by the horizontal member. In this state, the stopper at the other end can be released. With such a floored fabric frame, a single worker may be able to move between the ends of the floored fabric frame and lift each end in sequence, making it relatively easy to remove the floored fabric frame. Absent.

JP-A-2017-160666 Japanese Unexamined Patent Publication No. 2010-185262 Japanese Unexamined Patent Publication No. 2014-80845 Japanese Unexamined Patent Publication No. 2000-179149 Japanese Unexamined Patent Publication No. 2017-166207

Building work standard specifications / commentary, JASS2, temporary work (published by Architectural Institute of Japan) Temporary construction certification criteria and explanations, 8th edition (published by the Temporary Industry Association)

However, since the conventional cloth frame with a floor is provided with self-locking movable claws as a retaining member in all four grip fittings, it is necessary for the operator to manually unlock all the grip fittings. Even if the load at one end of the floored cloth frame can be transiently supported or supported by the horizontal member when the floored cloth frame is removed, the floored cloth frame removal work is generally performed by the operator alone (alone). ) Considering the actual situation in practice that it is often carried out, measures to further reduce the burden on workers are desired.

The present invention has been made in view of such circumstances, and an object of the present invention is a work of removing a temporary floor material for removing a temporary floor material erected or suspended between horizontal members by a gripping metal fitting. The purpose is to improve the performance and reduce the work load or load of the worker during the removal work. In the present specification, the term "temporary floor material" is not limited to a cloth frame with a floor, and is a general term for a floor structure, a floor component, or a floor component of a temporary scaffold including a floor material without a cloth frame. It is described as a term to be used.

In order to achieve the above object, the present invention is a gripping metal fitting for a temporary floor material forming a work floor or a work passage of a temporary scaffold.
It is projected from the end of the temporary floor material to the end of the floor material body so as to protrude in the cloth direction or the girder direction, and is locked to the horizontal material that supports or supports the temporary floor material to load the temporary floor material. In the gripping metal fitting of the temporary floor material transmitted to the horizontal member,
A main body portion provided with a base portion fixed to the floor material main body and a seating surface for seating on the outer peripheral surface of the upper half portion of the horizontal member.
In the area of the horizontal member on the floor material main body side, the retaining member or the retaining portion provided on the main body portion,
A horizontal member engaging surface that is rotatably or in-plane displaceablely supported or supported by the main body portion and extends along the outer peripheral surface of the upper half of the horizontal member on the side opposite to the floor material main body. By pressing the horizontal member engaging surface with the horizontal member, a movable hook that rotates upward with respect to the main body portion or is displaced in-plane relative to the main body portion is provided. Provided is a gripping metal fitting for a temporary floor material, which is characterized by having.

Preferably, the gripping metal fitting accommodates the horizontal member in the horizontal member accommodating area defined by the seating surface of the main body portion and the horizontal member engaging surface of the movable hook, and the seating surface of the main body portion provides a temporary floor. It is configured to transmit the load of the material to the horizontal member. More preferably, the grip fitting has a predetermined size or more due to the engagement or abutting of the retaining member extending along the outer peripheral surface of the lower half of the horizontal member or the horizontal member engaging surface of the retaining portion with the horizontal member. It is configured to prevent the upward displacement of the grip metal fittings and to restrain the horizontal displacement of the grip metal fittings by engaging or abutting the seating surface of the main body or the horizontal member engaging surface of the movable hook with the horizontal member. To. In addition, in this specification, "rotation" is not necessarily limited to the movement in the rotation direction about a specific center of rotation, and the swing moves or displaces in the direction along the outer peripheral surface of the horizontal member. It is a concept including. Further, in the present specification, "in-plane displacement" means displacement of the movable hook in a plane substantially equal to or parallel to the central plane of the movable hook or the main body portion, or in a plane substantially vertical. .. This in-plane displacement may be grasped as a two-dimensional displacement of the movable hook that can be specified by the behavior of the movable hook in the side view.

According to the above configuration of the present invention, when the seating surface of the gripping metal fitting is seated on the outer peripheral surface of the horizontal member, the vertical load of the temporary floor material is transmitted to the horizontal member through the seating surface, and the temporary floor material is , Supported or supported by horizontal members. The vertical load (vertical direction) or horizontal displacement (cloth direction or girder direction) of the temporary floor material is blocked by the engagement or abutment between the horizontal member and the seating surface or the horizontal member engaging surface. When an upward vertical external force acts on the main body of the grip metal fitting and a horizontal load toward the floor material main body acts on the main body of the grip metal fitting, the outer peripheral surface of the horizontal member becomes the horizontal member engaging surface of the movable hook. As a result, the movable hook passively (actually) rotates upward or is displaced in-plane to open the horizontal member accommodating area. That is, after the temporary scaffold is tilted as a whole, the temporary floor material is displaced upward and horizontally, or diagonally upward (tilted direction) as a whole to engage the grip metal fitting with the horizontal member. Since it can be unraveled, the operator does not need to move between the ends of the temporary floor material and manually operate the grip fittings at both ends. Thus, the workability of the temporary floor material removing work is greatly improved, and the work load or load of the worker at the time of the removing work is greatly reduced.

From another point of view, the present invention provides a temporary flooring material provided with a grip fitting having the above configuration at at least one end.

From yet another point of view, the present invention is the method for constructing the temporary floor material.
Work to separate the grip metal fittings arranged at at least one end of the temporary floor material from the horizontal material in order to remove the temporary floor material erected or suspended from the horizontal material of the temporary structure from the horizontal material. In the above, by moving the temporary floor material diagonally upward (η) without performing the unlocking operation of the retaining member or the retaining portion, the horizontal member engaging surface of the movable hook is placed on the horizontal member. Provided is a method for constructing a temporary floor material, which comprises sliding contact with the outer peripheral surface of a half portion to passively rotate or in-plane displacement the movable hook, and detaching the grip metal fitting from the horizontal member.

According to the grip metal fitting, the temporary floor material of the present invention provided with the movable hook of the above configuration, or the construction method thereof, the temporary floor material removal work for removing the temporary floor material erected or suspended between the horizontal members by the grip metal fitting. It is possible to improve workability and reduce the work load or load of the worker during the removal work.

FIG. 1 is a perspective view, a plan view, and a side view showing the temporary floor material provided with the grip fitting according to the preferred embodiment (first embodiment) of the present invention as a whole. FIG. 2 is a vertical cross-sectional view of the temporary floor material shown in FIG. FIG. 3 is a perspective view, an end view, and a bottom view of the first extruded profile shown in FIG. FIG. 4 is a perspective view, an end view, and a bottom view of the second extruded profile shown in FIG. 5 (A) and 5 (B) are partially enlarged side views of the temporary floor material showing the configurations of the movable claw type grip metal fitting and the movable hook type grip metal fitting, and FIG. 5 (C) is a partially enlarged side view of the movable claw type grip metal fitting. It is a perspective view which shows the structure of a metal fitting. FIG. 6 is a side view, an end view, and a perspective view showing the structure of the movable hook type gripping metal fitting. FIG. 6A shows a side view of the grip fitting on the side where the movable hook is arranged, and FIG. 6B shows a side view of the grip fitting on the side opposite to the movable hook. ing. FIG. 7 is a plan view, a sectional view taken along line I-I, a sectional view taken along line II-II, and a bottom view of the movable hook type gripping metal fitting. FIG. 8 is a side view showing stepwise the operation mode of the grip fitting related to the removal work of the temporary floor material. FIG. 9 is a side view showing the work procedure of the temporary floor material removing work according to the present invention step by step. FIG. 10 is a side view showing step by step the work procedure of the removal work of the floored cloth frame (comparative example) provided with the grip metal fitting of the conventional structure. FIG. 11 is a perspective view and a vertical cross-sectional view showing the structure of the floor extension member. FIG. 12 is a perspective view and a plan view showing the temporary floor material according to another preferred embodiment (second embodiment) of the present invention as a whole. FIG. 13 is a side view and a partially broken enlarged side view of the temporary floor material shown in FIG. FIG. 14 is a perspective view, a plan view, and a side view showing the extruded profile members constituting the temporary floor material shown in FIG. FIG. 15 is an enlarged end view and a partially broken enlarged side view of the extruded profile. FIG. 16 is a front view conceptually showing a mode in which a pair of left and right extruded profiles are connected by a joint member. FIG. 17 (A) is a vertical sectional view showing a configuration (full size) of a temporary floor material formed by connecting a pair of left and right extruded profiles by joint members, and FIG. 17 (B) is a single extruded profile. It is a vertical cross-sectional view which shows the structure (half size) of a temporary floor material composed of a material. FIG. 18 (A) is an end view showing the structure of one end of a temporary floor material composed of a single extruded profile, and FIG. 18 (B) is a view of the temporary floor material shown in FIG. 18 (A). It is an end view which shows the structure of the other end part. FIG. 19 is a side view showing the structure of the movable hook type gripping metal fitting according to still another embodiment (third embodiment) of the present invention. FIG. 19A shows a side view of the grip fitting on the side where the movable hook is arranged, and FIG. 19B shows a side view of the grip fitting on the side opposite to the movable hook. In FIG. 19C, the lock of the stopper is released. 20 (A) and 20 (B) are a side view and a partially enlarged side view showing the structure of the movable hook type gripping metal fitting according to the modified example (fourth embodiment) of each of the above-described embodiments. The state of being locked to the horizontal member is shown. 21 (A) and 21 (B) are a side view and a partially enlarged side view of the grip fitting shown in FIG. 20 showing a state in which the grip metal fitting shown in FIG. 20 is slightly raised from the horizontal member. 22 (A) and 22 (B) are a side view and a partially enlarged side view of the grip fitting shown in FIG. 21 in which the grip metal fitting shown in FIG. 21 is moved obliquely upward with respect to the horizontal member. 23 (A) and 23 (B) are side views of a temporary scaffold showing a process of removing a conventional cloth frame with a floor from a horizontal member of a building frame.

In a preferred embodiment of the present invention, the retaining member or the retaining portion comprises a fixed claw integrated or fixed to the main body portion, or a gravity type or self-locking movable claw attached to the main body portion. .. The opening of the horizontal member accommodating area for receiving the horizontal member is the edge portion (13d) of the horizontal member engaging surface and the tip portion (5d, 12d) of the retaining member or the retaining portion. Is formed between and. The main body portion has a pivot shaft that rotatably supports the movable hook, the pivot shaft has a pivot axis substantially parallel to the central axis of the cross member, and the movable hook is lateral to the central axis. When the frame member engaging surface is pressed against the cross member, it rotates upward around the pivot axis and expands the opening size (D2) of the opening. If desired, the pivot shaft is arranged in the area of the horizontal member on the floor material main body side, or is arranged at the tip end portion of the main body portion. Preferably, the opening size of the opening, that is, the separation distance (D2) between the edge portion (13d) and the tip portion (5d, 12d) is determined by the engagement of the grip fitting whose seating surface is seated on the horizontal member. It is smaller than the diameter of the horizontal member (D1) at the stop position and larger than the diameter of the horizontal member (D1) when the opening is widened by the rotation of the movable hook. More preferably, the lower surface of the tip of the movable hook (13b, 68) is the central axis (Bc) of the horizontal member at the locking position of the grip member (the position of the grip member with the seating surface seated on the horizontal member). It is located below the height position (HL), and when the opening dimension (D2) of the opening is enlarged by the rotation or in-plane displacement of the movable hook, the height position (HL) of the central axis of the horizontal member It is located substantially the same or above this height position (HL).

According to a preferred embodiment of the present invention, the movable hook has a curved slot extending along an arcuate trajectory centered on the pivot axis of the pivot axis, and a guide pin penetrating the slot is a main body portion. The angular range of rotation of the movable hook, which is projected on the side surface of the movable hook around the pivot axis, is regulated by the slot and the guide pin. Preferably, the seating surface of the main body portion and the horizontal member engaging surface of the movable hook are curved so as to extend in surface contact with or close to the outer peripheral surface of the horizontal member. The retaining member extending along the outer peripheral surface of the lower half of the horizontal member or the horizontal member engaging surface of the retaining portion is separated from the horizontal member at the locking position of the gripping metal fitting whose seating surface is seated on the horizontal member. However, a gap or gap (κ) is formed between the seating surface and the outer peripheral surface of the lower half of the horizontal member. On the other hand, the horizontal member engaging surface of the movable hook is slightly separated from the horizontal member at the locking position, or comes into contact with or sits on the outer peripheral surface of the horizontal member due to the weight of the movable hook. The position of the movable hook at the locking position is set by the movable hook being seated on the outer peripheral surface of the horizontal member by its own weight, or by engaging or abutting the upper end of the slot with the guide pin. .. The stopper extends in contact with or close to the outer peripheral surface of the horizontal member so as to be curved and extended to the outer peripheral region of the lower half of the horizontal member, and the overlap dimension (β) between the stopper and the horizontal member in a plan view. Is set within a range of 5 mm or more and 15 mm or less (for example, about 10 mm).

According to another preferred embodiment of the present invention, the movable hook has a slot or an elongated hole through which a stud or a support shaft projecting from a side surface of the main body portion penetrates, and the slot or the elongated hole and the stud or the support shaft have a slot or an elongated hole. In-plane displacement due to relative displacement with. Preferably, the movable hook has a plurality of vertically spaced slots or elongated holes and a plurality of vertically spaced studs or support shafts. If desired, the slot or elongated hole and the stud or support shaft are arranged in the area of the horizontal member on the floor material main body side, or are arranged at the tip end portion of the main body portion.

According to a more preferred embodiment of the present invention, the opening (λ) of the horizontal member accommodating area (ε) tilts the perpendicular direction (μ) of the opening plane (ω) with respect to the horizontal plane (HL). It has a configuration oriented in a direction forming an angle (θ), and the inclination angle (θ) is within an angle range of 30 to 70 degrees, preferably within an angle range of 35 to 65 degrees, and more preferably 40 to 60 degrees. The angle is set within the angle range of degrees.

According to a preferred embodiment of the temporary floor material according to the present invention, the floor material main body is composed of a single integrally molded floor material component, or a plurality of floor material components are connected in parallel and integrally. It has a composite structure. Preferably, the floor material component is made of an extruded aluminum profile having a width of 350 mm or less and a length of 400 mm or more, and the extruded profile has a floor plate portion forming a floor surface of a work floor or a work passage and a stiffening extending in the longitudinal direction. Has ribs. Preferably, the floor material main body has a length of 1200 mm or more, preferably 1500 mm or more, and the base portion (11a) of the main body portion of the gripping metal fitting is located at the side end portion of the floor material main body. It is fixed to the stiffening rib (24:27:41).

Preferably, the temporary floor material according to the present invention further includes a floor surface extension member that extends the floor surface of the floor material body in the cloth direction, and the seating surface is a locking position of the grip fitting seated on the horizontal member. The central axis of the horizontal member is located at a height lower than the lower surface of the floor material body, and the ends of the floor material body are separated from the horizontal member by a horizontal distance (St) of 15 mm or more. However, the height difference (Sh) between the floor surface and the top of the horizontal member is set to a dimension of 15 mm or more, and the free space has a dimension of 15 mm or more as the dimension (S1, S2) on the extension line of the diameter of the horizontal member. Is formed in the outer peripheral region of the horizontal member. According to a preferred embodiment of the temporary floor material according to the present invention, the horizontal distance (St) is set to a dimension within the range of 50 mm or less, preferably 30 to 40 mm (for example, 35 mm), and the height is high or low. The difference (Sh) is set to a dimension within the range of 50 mm or less, preferably 20 to 30 mm (for example, 25 mm), and the free space dimension (S1, S2) is 50 mm or less, preferably 20 mm to 35 mm. It is set to a dimension within the range of (for example, 25 mm). Preferably, the lower surface (2b) of the floor material main body is located at a height position above the center (Bc) of the recess constituting the horizontal member accommodating area, and the height of the lower surface and the center of the floor material main body is high or low. The difference (ΔS) is set to a dimension of 15 mm or less (for example, 6 mm). More preferably, the floor extension member is made of an extruded aluminum profile fixed to the end of the floor material body, and has a horizontal extension plate portion (30) extending the upper surface of the floor material body and the horizontal extension. It has a vertical plate portion (31) that hangs down from the base end portion of the plate portion, and a diagonal plate portion (32) that faces the outer peripheral surface of the horizontal member and defines a free space. The vertical plate portion abuts on the end face of the aluminum extruded profile that constitutes the floor material body, and constitutes a backing plate or a cover plate of the extruded profile. Preferably, the skew plate portion has a holding portion that detachably holds a display tool that functions as an identification display.

In another preferred embodiment of the present invention, the floor material main body has a structure in which the floor material is assembled to a cloth frame (beam material and cloth material), and the grip metal fitting is attached to the cloth frame to form a floor. The material body and the grip metal fitting form a cloth frame with a floor.

According to a preferred embodiment of the method for constructing the temporary floor material according to the present invention, the grip metal fitting is slightly lifted upward before the horizontal member is moved diagonally upward, and the retaining member or the retaining portion is used. A step is adopted in which the engaging surface of the horizontal member and the outer peripheral surface of the lower half of the horizontal member are transiently brought close to each other, abutted or abutted with each other.

If desired, in order to erection or suspend the temporary floor material on the horizontal material of the temporary structure, the grip fittings arranged at at least one end of the temporary floor material are locked to the horizontal material to prevent the temporary floor material from coming off. By moving the temporary floor material diagonally downward and bringing the grip metal fitting closer to the horizontal member without performing the unlocking operation of the member or the retaining part, the horizontal member engaging surface is moved to the upper half of the horizontal member. The movable hook may be passively rotated upward or displaced in-plane by sliding contact with the outer peripheral surface, and the seating surface may be seated on the outer peripheral surface of the upper half of the horizontal member.

Further, according to the construction method of the temporary floor material provided with the movable claw (5) having the gravity type self-locking mechanism (7, 8) as the retaining member or the retaining portion of the left and right gripping metal fittings at each end. In the work of separating the grip metal fittings from the horizontal member in order to remove the temporary floor material erected or suspended from the horizontal member from the horizontal member, the locking member or the retaining portion is unlocked and movable. It is possible to adopt a step of rotating the hook upward or in-plane displacement to widen the opening (λ) of the grip fitting and separating the grip fitting from the horizontal member.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view, a plan view, and a side view showing the temporary floor material provided with the grip fitting according to the preferred embodiment of the present invention as a whole. FIG. 2 is a vertical sectional view of the temporary floor material shown in FIG. 1, and FIGS. 3 and 4 are a perspective view, an end view, and a bottom view of the extruded profile material constituting the temporary floor material shown in FIG.

FIG. 1 (A) shows a temporary floor material 1 supported or supported by the building frame A of the frame scaffold. The building frame A is a steel frame body in which the horizontal member B and the pedestal C are integrated and reinforced by stiffeners D, E and the like. The temporary floor material 1 has a floor material main body 2, and the upper surface (floor surface) 20 of the floor material main body 2 constitutes a work passage or a work floor of the temporary scaffold. The floor surface extension member 3 is integrally attached to both ends of the floor material main body 2. As shown in FIGS. 1B and 1C, a pair of left and right movable claw type gripping metal fittings 4 are arranged at one end of the floor material main body 2, and a pair of left and right movable hook type gripping metal fittings 10 are attached to the floor. It is arranged at the other end of the material body 2. The gripping metal fittings 4 and 10 project from the end of the floor material main body 2 in the cloth direction or the girder direction. As shown in FIG. 1B, the mounting positions of the grip fittings 4 and 10 are rotationally symmetrical positions of 180 degrees with respect to the vertical center axis in the plan view of the temporary floor material 1. In the following description, the configuration in which the temporary floor material 1 is erected on the horizontal member B of the building frame A of the frame scaffolding will be described, but the temporary floor material 1 of this embodiment is not only the frame scaffolding but also a wedge. It is designed so that it can be erected between horizontal members (arms) even in a combined scaffold, and therefore, it is a temporary floor material that can be shared or used in each type of scaffold of a framework scaffold and a wedge-connected scaffold.

The temporary floor material 1 is erected or suspended between the horizontal members B of the adjacent building frames A by locking the grip fittings 4 and 10 to the horizontal members B of the building frame A. The gripping metal fittings 4 and 10 transmit the load of the temporary floor material 1 to the horizontal member B. The grip metal fitting 4 is a self-locking type grip metal fitting having a conventional configuration, and the grip metal fitting 10 includes a retaining 12 and a movable hook 13 (FIG. 5) described later according to the present invention. The temporary floor material 1 is not provided with a cloth frame (cloth material and beam), and is made of aluminum or an aluminum alloy with stiffening ribs 24 to 29 (FIG. 2). It is composed of a member 3 and grip fittings 4 and 10. The stiffening ribs 24 to 29 are structural elements corresponding to the cloth frame or the cloth material of the cloth frame with a floor in terms of improving the bending rigidity (cross-sectional coefficient, etc.) against a vertical load or the like.

As shown in FIG. 2, the floor material main body 2 has a structure in which the first extruded profile 21 and the second extruded profile 22 are integrally connected at the central connecting portion 2a. As shown in FIG. 3, the first extruded shape member 21 is made of an aluminum extruded shape member in which the side edge rib 24 for stiffening, the intermediate rib 25, and the connecting rib 26 are integrally formed with the floor plate portion 21a. As shown in FIG. 4, the second extruded shape member 22 is made of an aluminum extruded shape member in which the side edge rib 27 for stiffening, the intermediate rib 28, and the connecting rib 29 are integrally formed with the floor plate portion 22a. The side edge ribs 24, 27, intermediate ribs 25, 28 and connecting ribs 26, 29 are arranged in parallel at intervals in the width direction (inter-beam direction or arm direction), and are parallel to each other and in the longitudinal direction (cloth direction or girder direction). Extend to. The upper edge portions of the side edge ribs 24 and 27 have bent portions 24a and 27a bent downward, and the lower edge portions of the side edge ribs 24 and 27 have downwardly projecting protrusions 24b and 27b. The bent portions 24a, 27a and the protruding portions 24b, 27b are for engaging with each other in a stacked state of the plurality of temporary floor materials 1 to stabilize the stacked state of the temporary floor material 1. The points are described in detail in the specification / drawing of Japanese Patent Application No. 2018-133770 relating to the application of the applicant. Therefore, by quoting the specification / drawing of Japanese Patent Application No. 2018-133770, further details can be obtained. The description will be omitted.

As shown in FIG. 2, the connecting ribs 26 and 29 are connected at the central connecting portion 2a and integrated by a fixing means such as welding. Specifically, in the connecting ribs 26 and 29, the protrusion 29a of the connecting rib 29 is inserted or fitted into the groove 26a of the connecting rib 26, and the bent portions 26b and 29b of the connecting ribs 26 and 29 are vertically overlapped with each other to superimpose the connecting ribs 26 and 29. The vertical portions 26c and 29c of 26 and 29 are connected by abutting against each other, and the bent portions 26b and 29b are integrated by joining by a fixing means such as welding.

In this example, the extruded profiles 21 and 22 have dimensions of about 250 mm in width, about 45 mm in height, and about 1700 mm in length. The total width of the temporary floor material 1 is about 500 mm. The temporary floor material 1 of this example has a structure in which two extruded profiles 21 and 22 are connected in parallel, but if desired, the temporary floor material 1 is composed of only one extruded profile, or It is also possible to form the temporary floor material 1 by connecting three or more extruded profiles in parallel.

5 (A) and 5 (B) are partially enlarged side views of the temporary floor material 1 showing the configurations of the movable claw type grip metal fitting 4 and the movable hook type grip metal fitting 10, and FIG. 5 (C) is a movable side view. It is a perspective view which shows the structure of the claw type gripping metal fitting 4. FIG. 6 is a side view, an end view, and a perspective view showing the structure of the movable hook type grip metal fitting 10, and FIG. 7 is a plan view, a sectional view taken along line I-I, and a line II-II of the movable hook type grip metal fitting 10. It is a cross-sectional view and a bottom view.

As shown in FIGS. 5 (A) and 5 (B), the movable claw type gripping metal fitting 4 (hereinafter referred to as “grasping metal fitting 4”) has a conventional configuration and is a gravity type (self-locking type) movable. It is composed of a retaining 5 made of claws and a grip metal fitting main body 6 (hereinafter, referred to as “main body 6”) that sits on the upper surface of the horizontal member B and locks to the horizontal member B. As shown in FIGS. 2 and 5A, the base portion 6a of the main body 6 is formed by the bolt / nut assembly 6b penetrating the bolt hole 6c (FIG. 5C) to form the vertical portions 24c of the side edge ribs 24 and 27. It is fixed at 27c (Fig. 2).

The stopper 5 and the main body 6 are each made of integrally molded aluminum parts. The stopper 5 has a curved slot (long hole) 7, and a pair of upper and lower horizontal studs (horizontal support shafts) 8 penetrating the slot 7 are projected horizontally on the side surface of the main body 6. The stopper 5 is always located at a descent position (FIGS. 5 (A) and 5 (C)) that descends under gravity. The upper stud 8 supports the upper edge portion of the slot 7, and the locking portion 5a of the stopper 5 comes into contact with or is close to the outer peripheral surface of the lower half portion of the horizontal member B. As shown in FIG. 5A, the stopper 5 extends to the outer peripheral region of the lower half of the horizontal member B and overlaps with the stopper 5 in a plan view, and the overlap dimension α is 5 mm or more and 15 mm or less, for example. It is set to about 10 mm. Lifting of the temporary floor material 1 due to wind pressure or the like is prevented by the engagement between the locking portion 5a and the horizontal member B.

The numbered wire insertion hole 9 having a circular cross section horizontally penetrates the upper part of the main body 6. If desired, a wire (not shown) is inserted into the wire insertion hole 9 to circulate around the horizontal member B, and then the wire is fastened or tightened, whereby the main body 6 is wire to the horizontal member B. Can be fixed.

As shown in FIG. 5B, when the stopper 5 is pushed upward by a finger and the lower stud 8 abuts or abuts on the lower edge portion of the slot 7, the locking portion 5a of the stopper 5 is laterally moved. It is retracted from the outer peripheral area of the lower half of the frame member B, and the recess of the main body 6 is opened downward. Since the stopper 5 allows the temporary floor material 1 to be displaced upward with respect to the horizontal member B at this retracted position (FIG. 5 (B)), the grip metal fitting 4 is lifted upward to separate or separate from the horizontal member B. Can be made to.

On the other hand, the movable hook type grip metal fitting 10 (hereinafter referred to as “grasping metal fitting 10”) arranged at the opposite end of the temporary floor material 1 is engaged with the horizontal member B as shown in FIGS. 5 to 7. A retaining bracket main body 11 (hereinafter referred to as "main body 11") that can be stopped, a detachment stopper 12 composed of a fixing claw fixed to the main body 11, and a bottom opening type that is pivotally supported by a pivot shaft 14. It is composed of a concave or C-shaped flat plate movable hook 13. Similar to the base portion 6a of the gripping tool 4, the base portion 11a of the main body 11 is formed into the vertical portions 24c and 27c (FIG. 2) of the side edge ribs 24 and 27 by the bolt / nut assembly 11b penetrating the bolt hole 11c (FIG. 6). Can be installed. The main body 11 and the stopper 12 are each made of integrally molded aluminum parts. The stopper 12 is integrally joined or fixed to the main body 11 by a fixing means such as welding in the vicinity of the base portion 11a.

As shown in FIG. 6, the central axis 14c of the pivot shaft 14 is oriented substantially parallel to the central axis Bc of the horizontal member B. The movable hook 13 rotates about the central axis 14c of the pivot shaft 14. A guide pin 15 for structurally stabilizing the movable hook 13 and restricting the rotation of the movable hook 13 is projected from the side surface of the main body 11. The guide pin 15 penetrates a curved slot (long hole) 16 formed in the movable hook 13. As shown in FIG. 6A, the arcuate center line of the slot 16 is an arcuate orbit having a radius of curvature r with the center axis 14c as the center of curvature. In this example, the pivot shaft 14 is arranged in the vicinity of the base portion 11a, but the pivot shaft 14 is arranged on the main body 11 in the region directly above the central axis Bc, or the tip portion 11e of the main body 11 The pivot shaft 14 may be arranged in the.

The main body 11 has a curved seating surface 17 that is curved so as to be seated on the upper surface of the horizontal member B. In a state where the temporary floor material 1 is erected between the horizontal members B (FIG. 5 (A)), the curved seating surface 17 is seated on the outer peripheral surface of the horizontal member B, and the load of the temporary floor material 1 is curved. It is transmitted to the horizontal member B via the seating surface 17. The curved seating surface 17 is continuous with the lower surface 17a of the horizontal tip portion 11e in the region directly above the central axis Bc. If desired, the lower surface 17a may be bent or curved downward, the tip portion 11e may be extended downward, and the tip portion 11e may be designed in a hook form. In such a design, it is also possible to arrange the pivot shaft 14 in the downward extending portion of the tip portion 11e.

The stopper 12 has a horizontal member engaging surface 12a that extends curvedly in the lower half outer peripheral region of the horizontal member B so as to be close to the lower outer peripheral surface of the horizontal member B. In the state where the temporary floor material 1 is erected on the horizontal member B (FIG. 5A), the horizontal member engaging surface 12a is separated from the horizontal member B, and the horizontal member engaging surface 12a and the horizontal member B are separated from each other. A gap or gap κ is formed between the lower half portion and the outer peripheral surface so that the gripping metal fitting 10 can be displaced upward with respect to the horizontal member B. The stopper 12 overlaps with the horizontal member B in a plan view (FIG. 7 (A)), and the horizontal overlapping dimension β is 5 mm or more and 20 mm or less, preferably 5 mm or more and 15 mm or less, for example, about 10 mm. Set. The upward displacement of the stopper 12 with respect to the horizontal member B is prevented by the engagement between the horizontal member engaging surface 12a and the horizontal member B due to the overlap of the dimensions β. For example, the floating phenomenon of the temporary floor material 1 due to wind pressure or the like is prevented by the horizontal member engaging surface 12a engaging or abutting with the horizontal member B.

The movable hook 13 has a horizontal member engaging surface 13a that is curved and extends to the outer peripheral region of the upper half of the horizontal member B so as to be close to the upper outer peripheral surface of the horizontal member B. In the state where the temporary floor material 1 is erected on the horizontal member B (FIG. 5 (A)), the horizontal member engaging surface 13a contacts or approaches the upper outer peripheral surface of the horizontal member B due to its own weight, but the temporary floor The load of the material 1 and its reaction force do not act on the horizontal member engaging surface 13a. The lower surface 13b of the tip of the movable hook 13 is located slightly below the level (height position) HL of the central axis Bc of the horizontal member B, and the height difference Δh1 between the level HL and the lower surface 13b of the tip is preferable. Is set to a dimension of 10 mm or less (2 mm or more), more preferably in the range of 3 to 7 mm, for example, about 5 mm. The horizontal displacement of the gripping metal fitting 10 with respect to the horizontal member B is prevented by the engagement or contact between the curved seating surface 17 or the horizontal member engaging surface 13a and the horizontal member B.

Thus, the horizontal member accommodating area ε (FIG. 6D) of the gripping metal fitting 10 capable of receiving the horizontal member B is defined by the horizontal member engaging surfaces 12a and 13a and the curved seating surface 17. The horizontal member accommodating area ε is a bottom opening-shaped recess having a substantially C-shaped cross section that can accommodate the horizontal member B. As will be described later, the opening λ of the horizontal member accommodation area ε (FIG. 6 (D)) opens the horizontal member B diagonally downward at a predetermined angle with respect to the level HL, and the horizontal member B is the horizontal member accommodation area. It is configured to be received in ε and to separate the horizontal member B from the horizontal member accommodating area ε.

The opening dimension D2 (FIGS. 6A and 6B) of the opening λ is set to a value smaller than the diameter (outer diameter) D1 of the horizontal member B. In framework scaffolds (and wedge-coupled scaffolds), the diameter D1 of the cross member B is generally 42.7 mm. On the other hand, the opening dimension D2 of the opening λ is set within the range of 40 to 30 mm (for example, about 36 mm).

The opening dimension D2 of the opening λ is the inner edge portion (edge portion of the horizontal member engaging surface 13a) 13d of the movable hook 13 located at the boundary between the horizontal member engaging surface 13a and the tip lower surface 13b, and the inner side. This is the distance between the edge portion 13d and the tip end portion 12d of the stopper 12 facing the edge portion 13d. The inner edge portion 13d is a curved surface having a minute radius of curvature, and the radius of curvature of the inner edge portion 13d is preferably 8 mm or less (1 mm or more), more preferably a dimension within the range of 2 to 6 mm, for example, about 4. It is set to ~ 5 mm. The opening plane ω of the opening λ defined by the tip portion 12d and the inner edge portion 13d is inclined with respect to the horizontal plane HL, and the perpendicular line μ of the opening plane ω is a direction forming an inclination angle θ with respect to the horizontal plane HL. Oriented to. The tilt angle θ is set to an angle within the angle range of 40 to 60 degrees, for example, 50 degrees. As will be described later, the inner edge portion 13d slides on the outer peripheral surface of the horizontal member B, receives the reaction force or reaction of the outer peripheral surface of the horizontal member B, and receives the reaction force or reaction of the outer peripheral surface of the horizontal member B, and the pivot shaft 14 is used for the cam slave operation or the pressure receiving operation. The opening λ of the horizontal member accommodating area ε is opened relatively large by rotating around the central axis 14c of the above.

The movable hook 13 is always located at a descending position (FIGS. 5 and 6) lowered under gravity, the guide pin 15 supports the upper edge portion of the slot 16, and the cross member engaging surface 13a is formed. It comes into contact with or approaches the outer peripheral surface of the upper half of the horizontal member B due to its own weight. Therefore, the opening dimension D2 of the opening λ always maintains a dimension smaller than the diameter D1 of the horizontal member B under gravity. On the other hand, since the movable hook 13 rotates about the central axis 14c of the pivot shaft 14 and is displaced upward as shown by the broken line in FIG. 6A, the grip fitting 10 is locked to the horizontal member B. At that time, it receives an upward reaction force of the horizontal member B and rotates upward to widen the opening λ.

Therefore, in the step of erection or suspension of the temporary floor material 1 between the horizontal members B, the lower surface 13b at the tip of the grip fitting 10 is placed on the horizontal member B, so that the movable hook abuts on the horizontal member B. 13 is transiently rotated upward as shown by a broken line in FIG. 6A to transiently widen the opening of the opening λ, and the horizontal member B is accommodated in the horizontal member accommodation area ε. Just do it. As a result of the behavior of accommodating the horizontal member B in the horizontal member accommodating area ε in this way, the opening of the opening λ is reduced to the initial opening size D2.

Thus, the horizontal member B housed in the horizontal member accommodating area ε is constrained by the horizontal member engaging surfaces 12a and 13a and the curved seating surface 17 of the grip fitting 10 in terms of upward displacement and horizontal displacement. With the grip metal fitting 10 restrained on the horizontal member B in this way, a force for moving the grip metal fitting 10 in the direction (obliquely upward) of the engagement disengagement direction η shown in FIG. 6A is applied to the grip metal fitting 10. Then, the opening of the opening λ is widened, and the horizontal member B can be separated from the horizontal member accommodating area ε. Hereinafter, the work of removing the temporary floor material 1 will be described.

FIG. 8 is a side view showing stepwise the operation mode of the gripping metal fitting 10 related to the removal work of the temporary floor material 1.

FIG. 8A shows a state (locking position) in which the gripping metal fitting 10 is locked to the horizontal member B. In this state, the curved seating surface 17 of the main body 11 is seated on the outer peripheral surface of the horizontal member B, and the vertical load of the temporary floor material 1 is transmitted to the horizontal member B via the curved seating surface 17. The guide pin 15 is located at the upper end of the slot 16, and the horizontal member engaging surface 13a is in contact with or close to the upper outer peripheral surface of the horizontal member B. The opening dimension D2 of the opening λ is smaller than the diameter (outer diameter) D1 of the horizontal member B. The horizontal displacement of the gripping metal fitting 10 with respect to the horizontal member B is prevented by the engagement or abutment between the horizontal member B and the curved seating surface 17 or the horizontal member engaging surface 13a. When the grip metal fitting 10 is lifted as shown by the upward vertical external force Fv in FIG. 8 (A), the grip metal fitting 10 is displaced upward with respect to the horizontal member B as shown in FIG. 8 (B), and is horizontally mounted. The outer peripheral surface of the lower half of the material B comes close to, abuts or abuts on the horizontal member engaging surface 12a of the stopper 12. In this state, a gap having a height dimension of Δh2 (Δh2 ≧ Δh1) is formed between the curved seating surface 17 and the horizontal member B. When the gripping metal fitting 10 is further horizontally displaced (ΔL1) as shown by the horizontal external force Fh in FIG. 8B, the horizontal member B presses the inner edge portion 13d of the movable hook 13 or a portion in the vicinity thereof, and the movable hook 13 receives a reaction force or reaction on the outer peripheral surface of the horizontal member B, and is moved upward about the central axis 14c of the pivot shaft 14 by the cam slave operation or the pressure receiving operation of the inner edge portion 13d or a portion in the vicinity thereof. It rotates passively. As a result, the gap size Δh3 is expanded, and the opening size D2 of the opening λ is expanded to a size larger than the diameter (outer diameter) D1 of the horizontal member B. Therefore, when the external force Fη (FIG. 8C) in the arrow η direction (engagement disengagement direction) acts on the grip metal fitting 10 as the resultant force of the external forces Fv and Fh, the inner edge portion 13d and the portion in the vicinity thereof are in the arrow η direction. Since it functions as a cam driven surface or a pressure receiving driven surface that converts the linear motion of the movable hook 13 into the rotational motion of the movable hook 13, the grip metal fitting 10 is a horizontal member as shown in FIGS. 8 (C) and 8 (D). It leaves B and moves diagonally upward. Such an operating mode of the grip fitting 10 enables the removal work of the temporary floor material 1 which does not particularly require the operation of manually unlocking the grip fitting 10.

FIG. 9 is a side view showing the work procedure of the removal work of the temporary floor material 1 step by step, and FIG. 10 is a removal work of a cloth frame with a floor (comparative example) provided with gripping metal fittings having a conventional structure at both ends. It is a side view which shows the work procedure of. In order to facilitate understanding of the difference between the present invention and the prior art, before explaining the work of removing the temporary floor material 1, the work of removing the cloth frame with a floor according to the comparative example will be described with reference to FIG. ..

FIG. 10A shows a cloth frame 100 with a floor supported by a horizontal member B of a temporary scaffold by a grip metal fitting 104 having a conventional structure. The floored cloth frame 100 is a temporary steel member in which the floor material 101, the cloth material 102, and the beam material (beam material) 103 are integrally assembled. A pair of left and right grip fittings 104 are integrally attached to both ends of the left and right cloth materials 102, so that the grip fittings 104 having substantially the same structure are attached to the four corners of the floored cloth frame 100, respectively. It is arranged. As shown in FIG. 10B, each gripping metal fitting 104 is composed of a retaining 105 made of a gravity-type movable claw and a hook body 106 that can be seated on the horizontal member B. The retaining 105 has a curved slot (long hole) 107, and a stud (support shaft) 108 horizontally fixed to the hook body penetrates the slot 107. The stopper 105 of each grip metal fitting 104 extends to the outer peripheral region of the lower half of the horizontal member B, and is located at a descending position (hereinafter, referred to as “mooring position”) that prevents the hook main body 106 from being displaced upward. The stopper 105 prevents the floored cloth frame 100 from rising due to wind pressure or the like at the mooring position. Note that FIG. 10 illustrates the retaining 105 having the structure and form described in Patent Document 5 described above.

When the floored cloth frame 100 is removed from the horizontal member B when the temporary scaffold is dismantled and removed, one end (the left end in FIG. 10) is prevented from coming off as shown by an arrow in FIG. 10 (B). The 105 is displaced upward by hand, the lower surface of the hook main body 106 is opened (hereinafter, this position is referred to as an “open position”), and the hook main body 106 is displaced upward, as shown in FIG. 10 (C). After lifting the end of the floored cloth frame 100 upward as shown by the arrow in FIG. 10 (C), the retaining 105 is displaced downward by the fingers as shown in FIGS. 10 (D) and 10 (E). Then, the lower end of the retaining 105 is seated on the upper surface of the horizontal member B, and the end of the floored cloth frame 100 is supported or supported by the horizontal member B. In this state, the retaining 105 at the other end (the right end in FIG. 10) is still in the mooring position (FIG. 10 (F)).

The operator moves to the other end of the cloth frame 100 with a floor, displaces the stopper 105 at the other end to the open position by hand as shown by the arrow in FIG. 10 (F), and the arrow in FIG. 10 (G). When the end portion of the floored cloth frame 100 is lifted upward as shown in FIG. 10 (H), the floored cloth frame 100 is completely separated from the horizontal member B as shown in FIG. 10 (H). The operator can lift or tilt the floored cloth frame 100 as a whole as shown by an arrow in FIG. 10 (H), whereby the floored cloth frame 100 can be removed from the horizontal member B. ..

When such a conventional cloth frame 100 with a floor is used, the operator moves between the ends of the cloth frame 100 with a floor and manually displaces the stopper 105 at each end to the open position by hand. The operation must be carried out. During such movement between the ends, the operator must maintain a stable state such as the posture and position of the floored cloth frame 100, which has conventionally been performed as a work load or load. Was conscious or recognized by the person. On the other hand, the gripping metal fitting 10 of the temporary floor material 1 according to the present embodiment eliminates the need to operate the retaining 105 at one end, and greatly reduces the work load or load, as described below. To do.

The process or step of the removal work of the temporary floor material 1 according to the present invention is shown in FIG. As described above, in the temporary floor material 1, a pair of left and right movable claw type grip metal fittings 4 are arranged at one end of the floor material main body 2, and a pair of left and right movable hook type grip metal fittings 10 are arranged at the other end of the floor material main body 2. It has a structure arranged in a part. The movable claw type grip metal fitting 4 has substantially the same structure as the grip metal fitting 104 shown in FIG. 10, but the movable hook type grip metal fitting 10 has external forces Fv and Fh (FIG. 8) that are vertical and horizontal to the main body 11 as described above. ) Or, by applying an external force Fη (FIG. 8) in the direction of the arrow η (engagement disengagement direction) to the grip metal fitting 10, the horizontal member B can be disengaged without performing a manual operation for unlocking. Is configured to allow

When removing the temporary floor material 1 from the horizontal member B at the time of dismantling and removing the temporary scaffold, as shown by the arrow in FIG. 9B, push up the stopper 5 of the grip metal fitting 4 upward with your fingers, and in FIG. 9D ), The main body 6 can be displaced upward as shown by the arrows in FIGS. 9 (D) and 9 (G). Since the grip metal fitting 10 rotates around the horizontal member B, when the end portion of the temporary floor material 1 is pushed up by a finger in the vicinity of the grip metal fitting 4, the temporary floor material 1 is entirely as shown in FIG. 9 (E). Inclined. The temporary floor material 1 may be inclined at an inclination angle of about 2 to 5 degrees, for example, about 3 degrees. As shown in FIG. 9 (F), when the grip metal fitting 10 is moved in the engagement disengagement direction η in this state, the grip metal fitting 10 is moved according to the above-mentioned operating mode (FIGS. 8 (B) to 8 (D)). As shown in FIG. 9 (I), it is separated from the horizontal member B.

That is, when the temporary floor material 1 is moved diagonally upward as a whole as shown by the arrows in FIGS. 9 (E) to 9 (G), the grip metal fitting 10 smoothly disengages the engagement with the horizontal member B. , As shown in FIG. 9 (I), the gripping metal fitting 10 is completely separated from the horizontal member B, so that the operator lifts the temporary floor material 1 as a whole or lifts the temporary floor material 1 as shown in FIG. 9 (H). It is tilted so that the temporary floor material 1 can be removed from the horizontal member B.

Thus, according to the temporary floor material 1 of the present embodiment, the operator releases the grip metal fitting 4 to slightly push up the end portion of the temporary floor material 1 and slightly incline the temporary floor material 1, and then the temporary floor. The temporary floor material 1 can be removed by moving the material 1 diagonally upward (in the direction of disengagement), and therefore, the temporary floor material 1 can be moved between the ends of the temporary floor material 1 while being slightly lifted. Therefore, the complicated work of manually unlocking the gripping metal fittings 10 at both ends is not required. Therefore, the labor of the worker is greatly reduced, and the work load or load is greatly reduced.

Next, the configuration of the floor surface extension member 3 of the temporary floor material 1 will be described with reference to FIG. FIG. 11 is a perspective view and a vertical sectional view showing the structure of the floor extending member 3.

The floor surface extension member 3 is made of an extruded aluminum profile like the floor material main body 2, and is fixed to the end of the temporary floor material 2 by a fixing means such as welding. The floor surface extension member 3 includes a horizontal extension plate 30 that extends the upper surface 20 of the floor material main body 2, a vertical plate 31 that hangs down from the horizontal extension plate 30, and an oblique line that faces the outer peripheral surface of the horizontal member B. It has a plate 32, a holding portion 34 for holding the display tool 90, and a stiffening member 35 arranged in a hollow portion of the floor surface extension member 3. The vertical plate 31 functions as a backing plate or a cover plate for the end face of the extruded aluminum profile. The diagonal plate 32 integrally connects the tip end of the horizontal extension plate 30 and the lower end of the vertical plate 31, and the stiffening member 35 extends horizontally so as to improve the rigidity of the floor extension member 3. The output plate 30, the vertical plate 31, and the holding portion 34 are integrally connected.

A removable display 90 made of an integrally molded product of colored resin is attached to the holding portion 34. The display tool 90 has a display unit 91, a mooring unit 92, and a connecting unit 93. The display unit 91 displays arbitrary information such as the manufacturer, user, type, and type of the temporary floor material 1 by color, characters on the surface, figures, and the like. The display unit 91 is a strip-shaped member having a rectangular cross section, and extends in the longitudinal direction of the floor surface extension member 3. The mooring portion 92 is inserted into the hollow portion 36 of the holding portion 34, and the connecting portion 93 penetrates the narrow opening 37 of the holding portion 34 to interconnect the mooring portion 91 and the display tool 90. When replacing the display tool 90, the display unit 91 of the existing display tool 90 is pulled with a finger to pull out the mooring portion 92 from the hollow portion 36, and the mooring portion 92 of the other display tool 90 is inserted into the hollow portion 36. Just do it.

As shown in FIG. 11B, the floor surface extension member 3 projects relatively large from the end of the floor material main body 2, and the tip of the floor surface extension member 3 is the floor surface of the adjacent temporary floor material 1. It is close to the tip of the extension member 3 (indicated by the broken line). Therefore, the floor material main bodies 2 adjacent to each other in the cloth direction (longitudinal direction) can be separated from each other relatively large. In this example, the diagonal plate 32 and the horizontal member B are separated by a distance S1 and S2 in the radial direction, and a relatively large free space S extending around the horizontal member B is the diagonal plate 32. It is formed between and the horizontal member B. The distances S1 and S2 are set within the range of 15 mm to 50 mm, preferably within the range of 20 mm to 35 mm (for example, about 25 mm). In order to form such a free space S, the lower surface 2b of the floor material main body 2 is located above the center Bc of the horizontal member B (the center of the recesses of the main bodies 6 and 11), and the lower surface 2b and the center Bc The height difference ΔS is set to 15 mm or less, preferably in the range of 3 to 10 mm (for example, 6 mm). Further, the height difference Sh between the upper surface 20 of the floor material main body 2 and the top Ba of the horizontal member B is set in the range of 15 mm to 50 mm, preferably 20 to 30 mm (for example, about 25 mm), and the floor material main body. The horizontal separation distance St between the end face of 2 and the horizontal member B is set within the range of 15 mm to 50 mm, preferably within the range of 30 to 40 mm (for example, about 35 mm). The free space S functions as a clearance (gap) for preventing positional or physical interference between the member that locks or engages with the horizontal member B and the temporary floor material 1. For example, the hook portion (not shown) of the temporary stairs and the mooring metal fitting (not shown) of the stiffener such as the reinforced cane are formed of the free space S, so that the floor material main body 2 and the floor surface extension member 3 are formed. It can be relatively easily locked or engaged with the horizontal member B without physically or physically interfering with the horizontal member B. Further, due to the formation of such a clearance, the work floor or the work passage is divided between the end faces of the adjacent temporary floor materials 1, but as described above, the floor surface extension member 3 is the upper surface of the floor material main body 2. The floor surface) 20 is extended to prevent a substantial gap from being formed between the adjacent temporary floor materials 1.

FIG. 12 is a perspective view and a plan view showing the temporary floor material according to another preferred embodiment of the present invention as a whole, and FIG. 13 is a side view and a partially broken enlarged side view of the temporary floor material shown in FIG. It is a figure. 14 is a perspective view, a plan view, and a side view showing the extruded profile material constituting the temporary floor material of the present embodiment, and FIG. 15 is an enlarged end view and a partially broken enlarged side view of the extruded profile material. FIG. 16 is a front view conceptually showing a mode in which a pair of left and right extruded profiles are connected by a joint member, and FIG. 17 (A) is a temporary floor formed by connecting a pair of left and right extruded profiles by a joint member. It is a vertical cross-sectional view which shows the structure (full size) of a material. FIG. 17B is a vertical cross-sectional view showing the structure (half size) of a temporary floor material composed of a single extruded profile. FIG. 18 (A) is an end view showing the structure of one end of a temporary floor material composed of a single extruded profile, and FIG. 18 (B) is a view of the temporary floor material shown in FIG. 18 (A). It is an end view which shows the structure of the other end part. In each figure, the same reference numerals are given to the components or components substantially the same as or equivalent to the components or components in FIGS. 1 to 11 (Example 1).

12 and 13 show a temporary floor material 1'supported or supported by the building frame A of the frame scaffolding. The temporary floor material 1'has a floor material main body 2', and the upper surface (floor surface) of the floor material main body 2'consists of a work passage or a work floor of the temporary scaffold. Similar to the above-described embodiment, the floor extending member 3 is integrally attached to both ends of the floor material main body 2', and a pair of left and right movable claw type gripping metal fittings 4 are attached to one end of the floor material main body 2'. A pair of left and right movable hook type gripping metal fittings 10 are arranged at the other end of the floor material main body 2'. The temporary floor material 1'is different from the temporary floor material 1 of the first embodiment in that a pair of left and right extruded profiles 40 are connected in parallel and integrally by a joint member 50, but other basic configurations are carried out. Since it is substantially the same as Example 1, duplicated description will be omitted.

As shown in FIGS. 14 and 15, the extruded shape member 40 is made of an aluminum extruded shape member in which the side edge rib 41 for stiffening and the intermediate rib 42 are integrally formed with the floor plate portion 40a. The side edge rib 41 functions as a connecting rib, and the intermediate rib 42 functions as a stiffening rib having no connecting function. The width W, length L, and thickness T of the extruded profile 40 are set to, for example, about 240 mm (W), about 1830 mm (L), and about 35 mm (T). On the upper surface of the floor plate portion 40a, a plurality of ridges 45 (FIG. 15 (A)) extending in parallel with the longitudinal direction (cloth direction) of the extruded shape member 40 are arranged side by side, and the width direction of the extruded shape member 40 (FIG. 15A). A large number of narrow grooves 46 (FIG. 15 (B)) extending in parallel to the beam-to-beam direction are engraved at a minute interval of about 1 to 4 mm. Rivet holes 41c are bored at both ends of each side edge rib 41. As shown in FIG. 13B, the bases 6a and 11a of the hook bodies 6 and 11 are fixed to the side edge rib 41 by the rivets 6c and 11c inserted into the rivet holes 41c.

As shown in FIG. 15A, the extruded shape member 40 has a shape and contour symmetrical with respect to the vertical central surface CL. The side edge ribs 41 and the intermediate ribs 42 are arranged in parallel at intervals in the width direction (inter-beam direction or arm tree direction), and extend parallel to each other and in the longitudinal direction (cloth direction or girder direction). Bent portions 43 that are slightly bent downward are formed on both side edges of the floor plate portion 40a. The side edge rib 41 has a vertical portion 41a that integrally hangs from each side edge band of the floor plate portion 40a, and a lower flange portion 41b that extends horizontally from the lower end to the vertical portion 41a. On the outer edge of the lower flange portion 41b, a bent portion 44 slightly bent upward is formed.

As shown in FIGS. 16 and 17 (A), a pair of left and right extruded profiles 40 are integrally connected via a joint member 50. The joint member 50 is an extruded aluminum profile having a substantially square cross section and having substantially the same total length as the extruded profile 40. Grooves 53 and 54 into which bent portions 43 and 44 can be inserted or fitted are formed in each corner of the joint member 50. As shown in FIGS. 16 and 17A, the bent portions 43, 44 of the pair of extruded profiles 40 are inserted or fitted into the grooves 53, 54 of the joint member 50, and the pair of extruded profiles 40 are the joint member 50. It is connected to each side of each side. The extruded profile 40 and the joint member 50 are integrated by joining the bent portions 43 and 44 to the joint member 50 by a fixing means such as welding.

The floor material body 2'in which the extruded profile 40 is integrally connected by the joint member 50 in this way has the overall dimensions (width) of the width W1 (= W × 2 + W2) including the separation distance W2 between the extruded profiles 40. Dimensions). The joint member 50 has a height substantially the same as the thickness T of the extruded profile 50, and has a width W3 larger than the separation distance W2. In this example, the width W3 is set to about 30 mm, the separation distance W2 is set to about 20 mm, and the width W1 is set to about 500 mm.

In this way, the floor extension member 3 (FIGS. 12 and 13), the movable claw type gripping metal fitting 4, and the movable hook type gripping metal fitting 10 can be attached to the floor material main body 2'in which the pair of left and right extruded profile members 40 are integrated. , A full-size (width of about 500 mm) temporary floor material 1'is manufactured, but the extruded profile 40 can be used as a half-size (width of about 240 mm) temporary floor material 1 "as shown in FIG. 17 (B). Can be used.

That is, the extruded profile 40 has a shape and contour symmetrical with respect to the vertical central surface CL, and rivet holes 41c are bored in the left and right vertical portions 41a, and rivets 6c and 11c (FIG. 13 (B)). )) Allows the base portions 6a and 11a of the hook bodies 6 and 11 to be attached to the vertical portion 41a, and the width W of the extruded profile 40 is about 240 mm, which is a general half size (width of about 200 to 250 mm). Has a width dimension that can be used as a temporary floor material. Therefore, as shown in FIG. 17B, the movable claw type gripping metal fitting 4 and the movable hook type gripping metal fitting 10 are attached to both ends of the extruded profile 40 (floor material main body 2 ”), and the floor surface for half size is extended. By attaching the installation member 3 (shown by the alternate long and short dash line in FIG. 17B) to each end of the extruded profile 40, a half-size (width of about 240 mm) temporary floor material 1 ”is manufactured by the extruded profile 40. be able to.

Thus, the extruded profile 40 according to the present embodiment can be used not only as a component of the full-size (width of about 500 mm) temporary floor material 1', but also of the half-size (width of about 240 mm) temporary floor material 1 ". Since it can also be used as a component of the above, the extruded profile 40 may be mass-produced by an extrusion forming process using one type of molding die, and this may be used as a material for both full size and half size. According to the example, the manufacturing cost and the product price of the temporary floor material can be reduced relatively significantly.

FIG. 18 shows a state in which the grip fittings 4 and 10 are attached to the vertical portion 41a. As described above, the base portions 6a and 11a of the grip fittings 4 and 10 are attached to the vertical portion 41a by the rivets 6c and 11c (FIG. 13 (B)), but the grip fittings 4 and 10 are attached to one side as shown in FIG. Is arranged inside the vertical portion 41a (inward side in the width direction), and is arranged outside the vertical portion 41a (outside side in the width direction) on the opposite side in the width direction. That is, the mounting positions of the grip fittings 4 and 10 are rotationally symmetric positions of 180 degrees with respect to the vertical central axis of the temporary floor material 1 ”. As shown in FIG. 17A, the symmetry is the same in the temporary floor material 1'which is formed by connecting a pair of left and right extruded profiles 40 in parallel by a joint member 50 and the temporary floor material 1 of the above-described first embodiment. Will be adopted by.

The temporary floor material 1 ”shown in FIGS. 17 (B) and 18 has a configuration in which the hook main bodies 6 and 11 and the floor surface extension member 3 are attached to a single unit of the extruded profile 40. Temporary installation having a width W = about 240 mm. The floor material 1 "can be suitably used as a half-size temporary floor material in a temporary scaffold such as a frame scaffold. By changing the value of the width W and setting the width W of the temporary floor material 1 "to a dimension of about 280 to 320 mm (for example, 300 mm), the temporary floor material 1" is temporarily installed as a support scaffolding or the like. It can also be suitably used as a floor material.

FIG. 19 is a side view showing the structure of the movable hook type gripping metal fitting 10 according to still another embodiment of the present invention. FIG. 19A shows a side view of the grip fitting 10 on the side where the movable hook 13 is arranged, and FIG. 19B shows the side surface of the grip fitting 10 on the side opposite to the movable hook 13. The figure is shown. Further, FIG. 19C is a side view of the gripping metal fitting 10 on the same side as that of FIG. 19B, in which the retaining metal fitting 5 is displaced upward to open the horizontal member accommodating area ε of the gripping metal fitting 10. Is shown in FIG. 19 (C). In each drawing, only the grip metal fitting 10 and the horizontal member B are shown, and the floor material main body 2 and the floor surface extension member 3 are not shown. Further, in each figure, the same reference numerals are given to the components or components substantially the same as or equivalent to the components or components in the above-described Examples (Examples 1 and 2).

In each of the above-described embodiments (Examples 1 and 2), the gripping metal fitting 10 includes a stopper 12 composed of a fixing claw fixed to the main body 11, but the gripping metal fitting 10 of this example is the same as the gripping metal fitting 4. , The stopper 5 is provided with a gravity type (self-locking type) movable claw. Similar to the above-described embodiment, the stopper 5 has a curved slot (long hole) 7, and a pair of upper and lower horizontal studs (horizontal support shafts) 8 penetrating the slot 7 project horizontally on the side surface of the main body 11. Will be done. The stopper 5 is always located at a descent position (FIG. 19 (B)) that descends under gravity. The upper stud 8 supports the upper edge portion of the slot 7, and the horizontal member engaging surface 5b of the stopper 5 is the lower half portion of the horizontal member B so as to be close to the lower outer peripheral surface of the horizontal member B. It curves and extends to the outer peripheral area. In the state where the temporary floor material 1 is erected on the horizontal member B (FIGS. 19A and 19B), the horizontal member engaging surface 5b is separated from the outer peripheral surface of the lower half of the horizontal member B. A gap or a gap κ is formed between the horizontal member engaging surface 12a and the lower outer peripheral surface of the horizontal member B so that the gripping metal fitting 10 can be displaced upward with respect to the horizontal member B.

The stopper 12 overlaps with the horizontal member B in a plan view, and the horizontal overlapping dimension β is set to 5 mm or more and 20 mm or less, preferably 5 mm or more and 15 mm or less, for example, about 10 mm. The upward displacement of the stopper 5 with respect to the horizontal member B is prevented by the engagement between the horizontal member engaging surface 5b and the horizontal member B due to the overlap of the dimensions β. For example, the floating phenomenon of the temporary floor material 1 due to wind pressure or the like is prevented by the horizontal member engaging surface 5b engaging or abutting with the horizontal member B.

As shown by an arrow in FIG. 19B, when the stopper 5 is pushed upward by a finger and the lower stud 8 abuts or abuts on the lower edge portion of the slot 7, the stopper 5 engages with the horizontal member. As shown in FIG. 19C, the surface 5b is retracted from the outer peripheral region of the lower half of the horizontal member B, and the recess of the main body 6 is opened relatively large downward. As a result of this manual unlocking operation, the opening of the opening λ formed between the inner edge portion (lower edge portion of the horizontal member engaging surface 13a) 13d of the movable hook 13 and the tip portion 5d of the stopper 5 The dimension D2 expands to the opening dimension D3. The opening dimension D3 is a value measured as a dimension in the horizontal projection plane, and is set to a value larger than the diameter (outer diameter) D1 of the horizontal member B. Since the stopper 5 allows the temporary floor material 1 to be displaced upward with respect to the horizontal member B at this retracted position (FIG. 19 (C)), the grip metal fitting 4 is lifted upward to separate or separate from the horizontal member B. Can be made to.

Since the configuration, structure, and function of the movable hook 10 are substantially the same as the configuration, structure, and function of the movable hook 10 in each of the above-described embodiments, the overlapping description of the movable hook 10 will be omitted.

According to the grip metal fitting 10 of this example, as described with reference to FIG. 9 in each of the above-described embodiments, the operator releases the grip metal fitting 4 located on the opposite side of the grip metal fitting 10 to release the temporary floor material 1. The temporary floor material 1 can be removed by slightly pushing up the end of the floor material 1 and slightly inclining the temporary floor material 1 and then moving the temporary floor material 1 diagonally upward (in the direction of disengagement). With the temporary floor material 1 slightly lifted, the temporary floor material 1 is moved between the ends to manually unlock the gripping metal fittings 10 at both ends, which does not require complicated work. Therefore, the labor of the worker in the work of removing the temporary floor material 1 is greatly reduced, and the work load or load is greatly reduced. Further, the gripping metal fitting 10 of this example uses a gravity-type (self-locking) movable claw to replace the fixed-claw type stopper 12 (Examples 1 and 2) fixed to the main body 11. Therefore, if desired, the work process of the conventional removal work shown in FIG. 10 can be adopted as the removal work of the temporary floor material 1. Further, as can be easily understood, the gripping metal fittings 10 of this example may be arranged at both ends of the temporary floor material 1.

Further, in the case of the temporary floor material 1 provided with the grip metal fitting 10 of this example, in the work of separating the grip metal fitting 10 from the horizontal material B in order to remove the temporary floor material 1 from the horizontal material B, the stopper 5 While performing the manual unlocking operation, the movable hook 13 is rotated upward, whereby the opening λ of the gripping metal fitting 10 can be greatly widened. For example, due to distortion, deformation, inclination, or the like of the temporary floor material 1, which is difficult to predict, the gripping metal fitting can be gripped as desired by only one of the unlocking operation of the stopper 12 and the rotating operation of the movable hook 13. When it becomes difficult to disengage from the grip metal fitting, both the unlocking operation of the stopper 12 and the rotation operation of the movable hook 13 are used in combination to greatly widen the opening λ of the grip metal fitting 10 and to widen the grip metal fitting. The 10 can be relatively easily disengaged from the horizontal member B.

20, 21 and 22 are a side view and a partially enlarged side view showing the structure of the grip metal fitting 10 provided with the in-plane displacement type or in-plane sliding type movable hook according to the modified example of each of the above embodiments. .. In FIGS. 20, 21 and 22, the operation mode of the gripping metal fitting 10 related to the removal work of the temporary floor material 1 is shown step by step. In each drawing, only the grip metal fitting 10 and the horizontal member B are shown, and the floor material main body 2 and the floor surface extension member 3 are not shown. Further, in each figure, the same reference numerals are given to the components or components substantially the same as or equivalent to the components or components in the above-described Examples (Examples 1 to 3).

As shown in FIG. 20, the gripping metal fitting 10 of this example has a main body 11 that can be locked to the horizontal member B, a detachment stopper 5 composed of a gravity type (self-locking type) movable claw, and a main body that can be displaced in the plane. It is provided with a flat plate-shaped movable hook 60 supported by 11.

Similar to each of the above-described embodiments, the main body 11 includes a curved seating surface 17 that is curved so as to be seated on the upper outer peripheral surface of the horizontal member B. The curved seating surface 17 shifts to the horizontal extension surface 17a in the vicinity of the top Ba of the horizontal member B, and the horizontal extension surface 17a extends to the side opposite to the floor material main body 2 and is continuous with the inclined surfaces 17b and 17c. .. In this example, the inclined surfaces 17b and 17c are separated from the outer peripheral surface of the horizontal member B. FIG. 20 shows a state in which the curved seating surface 17 or the horizontal extension surface 17a thereof is seated on the horizontal member B, that is, the locking position of the gripping metal fitting 10. The load of the temporary floor material 1 is transmitted to the horizontal member B via the curved seating surface 17 or the horizontal extension surface 17a thereof.

Similar to the above-described third embodiment, the stopper 5 has a curved slot (long hole) 7, and a pair of upper and lower horizontal studs (horizontal support shafts) 8 penetrating the slot 7 project horizontally to the side surface of the main body 11. Will be set up. The stopper 5 is always located at a lock position where it descends under gravity to prevent the main body 11 from being displaced upward, and prevents the temporary floor material 1 from rising due to wind pressure or the like. As shown by the arrow in FIG. 20 (A), by pushing the stopper 5 upward with a finger, the stopper 5 is displaced to the unlocked position as described in the above-described third embodiment (FIG. 19 (C)). , The opening λ of the gripping metal fitting 10 can be greatly expanded downward.

The movable hook 60 is arranged at the tip end portion of the main body 11 having the inclined surfaces 17b and 17c. As shown in FIG. 20B, the movable hook 60 has a horizontal member engaging surface 62 that is curved and extends to the outer peripheral region of the upper half of the horizontal member B so as to be close to the upper outer peripheral surface of the horizontal member B. Have. The horizontal member engaging surface 62 has an inner edge portion (lower edge portion of the horizontal member engaging surface 62) 61 of the movable hook 60 located at a boundary portion with the lower end surface 68, and the inner edge portion 61 is It faces the tip portion 5d of the stopper 5. The opening dimension D2 of the opening λ is the distance between the inner edge 61 and the tip 5d. The inner edge portion 13d is a curved surface having a small radius of curvature, as in each of the above-described embodiments. Similar to each of the above-described embodiments, the opening plane ω of the opening λ is inclined with respect to the horizontal plane HL, and the perpendicular line μ of the opening plane ω is oriented in a direction forming an inclination angle θ with respect to the horizontal plane HL. ..

Horizontal stud-shaped support shafts 63 and 64 that support the movable hook 60 so as to be displaceable in the plane are paired and project horizontally to the tip portion of the main body 11. Each support shaft 63, 64 is composed of a mechanical element such as a stepped rivet, a bolt, a screw, or a pin integrally attached to the tip portion of the main body 11. In this example, the central axes of the support shafts 63 and 64 are orthogonal to the central plane (vertical plane) of the main body 11 and are oriented substantially parallel to the central axis Bc of the horizontal member B. The central axis of the support shaft 63 located on the lower side is substantially the same as the level (height position) HL of the central axis Bc, or is separated by a height difference of ± 15 mm or less (preferably within ± 10 mm) in the vertical direction thereof. Positioned in the correct position. The central axis of the support shaft 64 located on the upper side is substantially the same as the level (height position) of the top Ba of the horizontal member B, or the height difference within ± 15 mm (preferably within ± 10 mm) in the vertical direction thereof. It is positioned at a position separated by. The lower end surface 68 of the movable hook 60 is located below the level (height position) HL of the central axis Bc of the horizontal member B, and the height difference Δh1 between the level HL and the lower end surface 68 is preferably 15 mm or less. (5 mm or more), more preferably a dimension in the range of 7-12 mm, for example about 10 mm.

The movable hook 60 has a pair of L-shaped slots (long holes) 65 and 66 through which the support shafts 63 and 64 penetrate. The bearing shafts 63 and 64 support the movable hook 60. The movable hook 60 is movably sandwiched between the side surface of the main body 11 and the enlarged head portions 63a and 64a of the support shafts 63 and 64, and is substantially the same as or parallel to the central plane of the movable hook 60 or the main body 11. It is displaceably or slidably supported or held by the body 11 in a plane (and thus in a substantially vertical plane). In the following description, the displacement of the movable hook 60 in a plane substantially the same as or parallel to the central plane of the movable hook 60 or the main body 11 or in a substantially vertical plane is referred to as "in-plane displacement". And. This in-plane displacement has a property that can be grasped as a two-dimensional displacement of the movable hook 60 that can be specified by the behavior of the movable hook 60 in the side view.

The lower L-shaped slot 65 has a vertically long slot portion 65a extending in the vertical direction or the vertical direction and a horizontally long slot portion extending in the horizontal direction or the horizontal direction toward the base portion 11a side (horizontal member B side) of the main body 11. It has a structure in which 65b and 65b are connected at a substantially right angle. The upper L-shaped slot 66 has a vertically long slot portion 66a extending in the vertical direction or the vertical direction, and a horizontally long horizontally long slot extending slightly diagonally upward to the tip side of the main body 11 (the side opposite to the horizontal member B). It has a configuration in which the portion 66b is connected at an obtuse angle. At the locking position of the gripping metal fitting 10 shown in FIG. 20, the movable hook 60 is relatively upwardly pressed or supported by the horizontal member B, and is displaced in the plane to the highest position thereof. 64 is located at the bottom of the vertically elongated slot portions 65a and 66a.

Thus, at the locking position of the gripping metal fitting 10, the horizontal member engaging surface 62 contacts or approaches the upper outer peripheral surface of the horizontal member B due to its own weight, but the load of the temporary floor member 1 and its reaction force are not present. , The load of the temporary floor material 1 is transmitted to the horizontal member B via the curved seating surface 17 or the horizontal extension portion 17a thereof without acting on the horizontal member engaging surface 62, and the grip metal fitting 10 with respect to the horizontal member B. The horizontal displacement of is prevented by the engagement or abutment between the curved seating surface 17 or the horizontal member engaging surface 62 and the horizontal member B.

Hereinafter, the operation mode of the gripping metal fitting 10 of this example in the above-mentioned removal work of the temporary floor material 1 (FIG. 9 and the like) will be described.

As shown in FIG. 20 (B) by the upward vertical external force Fv, when the gripping metal fitting 10 is lifted, the main body 11 and the stopper 5 are displaced upward with respect to the horizontal member B as shown in FIG. The outer peripheral surface of the lower half of the frame member B comes close to, abuts or contacts the horizontal member engaging surface 5b of the stopper 5. As shown by the broken lines arrows τ1 and τ2 in FIG. 20B, as a result of the horizontal member B being displaced downward relative to the main body 11 and the stopper 5, the movable hook 60 is also the main body due to its own weight. Displaced relatively downward with respect to 11, the support shafts 63 and 64 move relative to the uppermost portions of the vertically elongated slot portions 65a and 66a as indicated by arrows τ3 and τ4.

As shown in FIG. 21, when an external force Fη in the arrow η direction (engagement disengagement direction) acts on the grip metal fitting 10, the inner edge portion 61 or the portion of the horizontal member engaging surface 62 in the vicinity thereof becomes the horizontal member B. The lower part of the movable hook 60 is displaced in the horizontal direction or the lateral direction so as to extend from the main body 11 as shown by the arrow ν1 due to the reaction force or reaction of the outer peripheral surface of the horizontal member B, and the support shaft. 63 moves relative to its end or end along the oblong slot portion 65b, as indicated by the broken arrow τ5. Further, as a result of the horizontal member B being displaced downward relative to the main body 11 and the stopper 5, the movable hook 60 is tilted toward the horizontal member B due to its own weight, as shown by arrows ν2 and ν3. The support shaft 64 then moves relative to its end or end along the oblong slot portion 66b, as indicated by the dashed arrow τ6.

The state in which the movable hook 60 is thus displaced in the plane is shown in FIG. Since the opening λ of the horizontal member accommodating area ε is opened relatively large diagonally downward, the gripping metal fitting 10 can be separated from the horizontal member B without unlocking the stopper 5. In this way, the gripping metal fitting 10 is moved relative to the horizontal member B, and the in-plane displacement of the movable hook 60 caused by this causes the opening λ of the horizontal member accommodating area ε to be relatively largely opened diagonally downward. According to the gripping metal fitting 10 of the present embodiment, it is possible to carry out the removal work of the temporary floor material 1 which does not require a manual unlocking operation of the gripping metal fitting 10 as in each of the above-described embodiments. Further, since the gripping metal fitting 10 of this example includes a release stopper 5 composed of a gravity type (self-locking type) movable claw, the release stopper 5 is released by a manual unlocking operation, if desired, as in the above-described third embodiment. The work process of the conventional removal work is adopted, or the in-plane displacement of the movable hook 60 and the manual unlocking of the stopper 5 are used in combination to perform the removal work in a state where the opening λ is greatly widened downward. It is also possible to carry out.

In the step of erection or suspension of the temporary floor material 1 between the horizontal members B, the movable hook 60 comes into contact with the horizontal member B when the gripping metal fitting 10 is seated on the horizontal member B, and is relatively relative to the horizontal member B. Since the in-plane displacement is performed upward and the opening of the opening λ is transiently widened, the horizontal member B can be relatively easily accommodated in the horizontal member accommodating area ε.

Although the preferred embodiments and examples of the present invention have been described in detail above, the present invention is not limited to the above embodiments and examples, but is within the scope of the present invention described in the claims. Various modifications or changes are possible.

For example, the grip fitting of the above embodiment has a structure in which the retaining member is integrally joined or fixed to the main body portion, but the main body portion and the retaining member may be integrally molded or manufactured as an integrally molded product. Well, in the above embodiment, the grip metal fitting is configured to include a single movable hook and a retaining member, but a plurality of movable hooks are rotatably supported on the main body portion, or a plurality of movable hooks are rotatably supported. The retaining member may be fixed to or integrated with the main body portion.

Further, the temporary floor material according to the above embodiment has a structure in which the grip metal fittings are directly attached to the extruded aluminum profile, but instead of the conventional grip metal fittings for the cloth frame with a floor, the grip metal fittings according to the present invention. It may be a cloth frame with a floor having a structure in which the above is arranged.

Further, the description of the above embodiment mainly relates to a configuration in which the temporary floor material is supported by the building frame of the frame scaffold, but as described above, the temporary floor material of the present invention is a horizontal member of the wedge-coupled scaffold. It can also be supported by (arm tree). If desired, the temporary flooring material of the present invention can be used in other types of scaffolding such as bracket scaffolding and mobile scaffolding, or can be redesigned so that it can be suitably used in other types of scaffolding. ..

In addition, for the structure of each part of the movable claw type gripping metal fitting, any conventional form, size or design can be appropriately adopted as long as it conforms to the present invention, and the cross section of the stiffening rib of the extruded shape member. As for the properties, dimensions, etc., any design can be adopted as long as it conforms to the present invention. For example, in the above embodiment, the pivot shaft of the rotary movable hook is arranged at or near the base of the grip metal fitting body, but the pivot shaft is arranged on the grip metal fitting main body in the region directly above the horizontal member. Alternatively, it may be arranged at or near the tip of the gripping metal fitting body. Further, in the embodiment of the gripping metal fitting provided with the rotatable movable hook, the tip portion of the gripping metal fitting body is designed as a horizontal protruding portion having a horizontal lower surface, but the tip portion of the gripping metal fitting body is laterally arranged. It may be designed in the form of a hook extending downward along the outer peripheral surface of the upper half of the frame material, and in such a design, the hook of the grip fitting body extending downward along the outer peripheral surface of the upper half of the horizontal member. It is also possible to dispose a pivot shaft of a movable hook on the tip portion.

Further, in the above embodiment, the grip metal fitting is fixed to the floor material main body by a bolt / nut assembly or a rivet, but the grip metal fitting may be fixed to the floor material main body by other fixing means or joining means.

The present invention is used in frame scaffolding, wedge-coupled scaffolding, etc. used in construction, civil engineering work, etc., and is erected or suspended between adjacent horizontal members by a grip metal fitting that engages with the horizontal members of the temporary scaffold. It is applied to the temporary floor material and its grip metal fittings that form the work passage or work floor of the temporary scaffold. According to the temporary floor material in which the movable claw type grip metal fitting is arranged at the first end of the floor material main body and the movable hook type grip metal fitting of the present invention is arranged at the second end of the floor material main body, the grip metal fitting is used. It is possible to improve the workability of the temporary floor material removing work for removing the temporary floor material erected or suspended between the horizontal members, and reduce the work load or load of the worker at the time of the removal work. Further, according to the temporary floor material of the present invention in which the floor material body is composed of an assembly of extruded aluminum profiles having a width of 350 mm or less, the temporary floor material erected or suspended between the horizontal members by the gripping metal fittings is made of lightweight aluminum. The extruded profile can be manufactured at a relatively low cost, and therefore, the present invention contributes to the widespread use of a lightweight aluminum temporary floor material that improves the workability of the installation / removal work of the temporary scaffold. Further, according to the temporary floor material of the present invention that forms the above-mentioned free space in the outer peripheral region of the horizontal member, the end portion of the temporary floor material and the hook portion or mooring metal fitting of another temporary member are formed on the horizontal member. It is possible to reliably prevent positional or physical interference in the vicinity. Thus, according to the present invention, it is possible to significantly reduce the work load or load of the worker engaged in the installation or removal work of the temporary scaffold, and the practical effect thereof is remarkable.

1 Temporary floor material 2 Floor material body 2a Central connection part 2b Bottom surface 3 Floor surface extension member 4 Movable claw type grip metal fitting 5 Detachment 5a Locking part 6 Grasp metal fitting body 7 Curved slot 8 Horizontal stud 9 Wire insertion hole 10 Movable hook Type gripping bracket 11 Grasping bracket body 11a Base 11b Bolt / nut assembly 12 Detachment 13 Movable hooks 12a, 13a, 5b Horizontal member engaging surface 12d Tip 13b Tip bottom 13d Inner edge 14 Pivot shaft 15 Guide pin 16 Curved slot 17 Curved seating surface 20 Upper surface (floor surface)
21, 22 Extruded profile 21a, 22a Floor plate portion 24-29 Stiffening rib 30 Horizontal extension plate 40 Extruded profile 50 Joint member 60 Movable hook 61 Inner edge 62 Horizontal member engaging surface 63, 64 Support shaft 65, 66 L-shaped slot (long hole)
68 Tip lower surface A Building frame B Horizontal material Ba Top of horizontal material Bc Center of horizontal material (center of recess)
D1 Diameter of horizontal member D2 Opening size of hook body S Free space S1, S2 Separation distance in the radial direction Sh, ΔS Height difference St Horizontal separation distance Δh1 Height difference Δh2, Δh3 Gap height dimension ΔL1 Horizontal displacement α, β Overlap Dimension ε Horizontal material storage area (recess)
λ Opening η Engagement disengagement direction ω Opening plane μ Perpendicular line θ Angle κ Gap or gap

Claims (20)

It is a gripping metal fitting for the temporary floor material that forms the work floor or work passage of the temporary scaffold.
It is projected from the end of the temporary floor material to the end of the floor material body so as to protrude in the cloth direction or the girder direction, and is locked to the horizontal material that supports or supports the temporary floor material to load the temporary floor material. In the gripping metal fitting of the temporary floor material transmitted to the horizontal member,
A main body portion provided with a base portion fixed to the floor material main body and a seating surface for seating on the outer peripheral surface of the upper half portion of the horizontal member.
In the area of the horizontal member on the floor material main body side, the retaining member or the retaining portion provided on the main body portion,
A horizontal member engaging surface that is rotatably or in-plane displaceablely supported or supported by the main body portion and extends along the outer peripheral surface of the upper half of the horizontal member on the side opposite to the floor material main body. By pressing the horizontal member engaging surface with the horizontal member, a movable hook that rotates upward with respect to the main body portion or is displaced in-plane relative to the main body portion is provided. A gripping metal fitting for temporary flooring, which is characterized by having. The horizontal member is accommodated in the horizontal member accommodating area defined by the seating surface of the main body portion and the horizontal member engaging surface of the movable hook, and the load of the temporary floor material is applied by the seating surface. Communicate to the material
Above the grip metal fitting having a predetermined size or more by engaging or abutting the horizontal member engaging surface of the retaining member or the retaining portion extending along the outer peripheral surface of the lower half of the horizontal member with the horizontal member. Prevent displacement,
The first aspect of the present invention is characterized in that the horizontal displacement of the gripping metal fitting is restrained by the engagement or contact between the seating surface of the main body portion or the horizontal member engaging surface of the movable hook and the horizontal member. The described grip bracket. The opening of the horizontal member accommodating area for receiving the horizontal member is the edge portion (13d) of the horizontal member engaging surface of the movable hook and the tip portion (5d,) of the retaining member or the retaining portion. 12d) The main body portion has a pivot shaft that rotatably supports the movable hook, and the pivot shaft is substantially parallel to the central axis of the cross member. The movable hook has a pivot axis, and when the cross member engaging surface is pressed against the cross member, the movable hook rotates upward about the pivot axis, and the opening dimension of the opening The grip metal fitting according to claim 2, wherein the gripping metal fitting is enlarged. The separation distance (D2) between the edge portion (13d) and the tip portion (5d, 12d) is the diameter (D1) of the horizontal member at the locking position of the grip fitting whose seating surface is seated on the horizontal member. ), And the grip metal fitting according to claim 3, wherein the opening is larger than the diameter of the horizontal member in a state where the opening is widened by rotation of the movable hook. The lower surface of the tip of the movable hook (13b, 68) is located below the height position of the central axis of the horizontal member at the locking position of the grip fitting whose seating surface is seated on the horizontal member. In a state where the opening dimension of the opening is enlarged by the rotation or in-plane displacement of the movable hook, the position is substantially the same as the height position of the central axis of the horizontal member or is located above the height position. The grip fitting according to any one of claims 1 to 4, which is characterized. The movable hook has a curved slot extending along an arcuate trajectory centered on the pivot axis, and a guide pin penetrating the slot is projected from the main body portion and is centered on the pivot axis. The grip fitting according to any one of claims 1 to 5, wherein the angle range of rotation of the movable hook is regulated by the slot and the guide pin. The grip metal fitting according to claim 3 or 4, wherein the pivot shaft is arranged in a region of the horizontal member on the floor material main body side, or is arranged at a tip end portion of the main body portion. The movable hook has a slot or an elongated hole through which a stud or a support shaft projecting from the side surface of the main body portion penetrates, and the in-plane displacement is caused by a relative displacement between the slot or the elongated hole and the stud or the support shaft. The grip fitting according to claim 1 or 2, characterized in that The grip fitting according to claim 8, wherein the movable hook has a plurality of the slots or elongated holes spaced vertically apart from each other, and a plurality of studs or support shafts spaced vertically spaced apart from each other. .. 8. The slot or elongated hole and the stud or support shaft are arranged in a region of the horizontal member on the floor material main body side, or are arranged at a tip end portion of the main body portion. Or the grip fitting according to 9. The seating surface of the main body portion and the horizontal member engaging surface of the movable hook are curved so as to extend in surface contact with or close to the outer peripheral surface of the horizontal member, and the lower half portion of the horizontal member. The horizontal member engaging surface of the retaining member or the retaining portion extending along the outer peripheral surface is separated from the horizontal member at the locking position of the gripping metal fitting whose seating surface is seated on the horizontal member. The horizontal member engaging surface of the movable hook is slightly separated from the horizontal member at the locking position, or is brought into contact with or seated on the outer peripheral surface of the horizontal member due to the weight of the movable hook. The grip fitting according to any one of claims 1 to 10. The vertical direction (μ) of the opening plane (ω) of the opening (λ) is oriented so as to form an inclination angle (θ) within an angle range of 30 to 70 degrees with respect to the horizontal plane (HL). The grip fitting according to claim 3 or 4. The claim is characterized in that the retaining member or the retaining portion comprises a fixed claw integrated or fixed to the main body portion, or a gravity type or self-locking movable claw attached to the main body portion. The grip metal fitting according to any one of 1 to 12. A temporary floor material provided with the grip fitting according to any one of claims 1 to 13 at at least one end. The floor material main body is composed of a single integrally molded floor material component, or has a composite structure in which a plurality of floor material components are connected in parallel and integrally.
The floor material component is made of extruded aluminum profile having a width of 350 mm or less and a length of 400 mm or more.
The temporary floor material according to claim 14, wherein the extruded shape material has a floor plate portion forming a floor surface of the work floor or a work passage, and a stiffening rib extending in the longitudinal direction. Further having a floor surface extending member for extending the floor surface of the floor material main body in the cloth direction,
At the locking position of the gripping metal fitting whose seating surface is seated on the horizontal member, the central axis of the horizontal member is located at a height lower than the lower surface of the flooring body, and the flooring member has a height. The ends are separated from the horizontal member by a horizontal distance (St) of 15 mm or more, and the height difference (Sh) between the floor surface and the top of the horizontal member is set to a dimension of 15 mm or more. The temporary provision according to claim 14 or 15, wherein a free space having a dimension (S1, S2) of 15 mm or more on the diameter extension line of the horizontal member is formed in the outer peripheral region of the horizontal member. Floor material. The method for constructing a temporary floor material according to any one of claims 14 to 16.
In order to remove the temporary floor material erected or suspended on the horizontal material of the temporary structure from the horizontal material, the grip metal fittings arranged at at least one end of the temporary floor material are used as the horizontal material. By moving the temporary floor material diagonally upward (η) without performing the unlocking operation of the retaining member or the retaining portion, the horizontal member engaging surface of the movable hook is moved. A temporary floor material, characterized in that the movable hook is passively rotated or in-plane displaced by sliding contact with the outer peripheral surface of the upper half of the horizontal member, and the grip metal fitting is separated from the horizontal member. Construction method. Before moving the horizontal member diagonally upward, the gripping metal fitting is lifted slightly upward to form the horizontal member engaging surface of the retaining member or the retaining portion and the outer peripheral surface of the lower half of the horizontal member. The method for constructing a temporary floor material according to claim 17, wherein the temporary floor materials are transiently brought into close contact with each other, abutted against each other, or abutted against each other. In the work of locking the grip metal fittings arranged at at least one end of the temporary floor material to the horizontal material in order to erection or suspend the temporary floor material on the horizontal material of the temporary structure. By moving the temporary floor material diagonally downward and bringing the grip metal fitting closer to the horizontal member without performing the unlocking operation of the retaining member or the retaining portion, the movable hook is engaged with the horizontal member. The surface is slidably contacted with the outer peripheral surface of the upper half of the horizontal member to passively rotate or in-plane displace the movable hook, and the seating surface is seated on the outer peripheral surface of the upper half of the horizontal member. The method for constructing a temporary floor material according to claim 17 or 18. The temporary floor material according to claim 15 or 16, wherein a movable claw (5) having a gravity type self-locking mechanism (7, 8) is provided as a retaining member or a retaining portion of the left and right grip fittings at each end. It is a construction method of
In the work of separating the grip metal fitting from the horizontal member in order to remove the temporary floor material erected or suspended on the horizontal member of the temporary structure from the horizontal member, the retaining member or the retaining portion Temporary construction characterized in that the unlocking operation is performed, the movable hook is rotated or displaced in-plane to widen the opening (λ) of the grip fitting, and the grip fitting is separated from the horizontal member. Floor material construction method.

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