JP2021188427A - Scaffold board in scaffold construction body - Google Patents

Abstract

To provide a scaffold board having an eaves plate part provided on an end cover mounted on a scaffold board body part provided with inner claw type claw metals.SOLUTION: In a scaffold board provided with inner claw type claw metals (19, 19) having hook parts (19c) which are deviated to the inside in a width direction of a floor plate part (16) through bent parts (19b) from base parts (19a) fastened to the inside of side frame parts (17) of a scaffold board body part and project in a longitudinal direction from both ends in the longitudinal direction of the scaffold board body part (18) together with the bent part (19b), an end cover (20) mounted on the end in the longitudinal direction of the scaffold board body part includes an upper plate part (31) and a lower plate part (32) covering the end in the longitudinal direction from upper and lower parts, an eaves plate part (33) which is positioned between the pair of claw metals (19, 19) provided on the end in the longitudinal direction and covers an upper space of a horizontal material (13) mounted with the hook part from the upper part, and a pair of connection plate parts (34A)(34B) for connecting the upper plate part and the lower plate part at positions in close contact with the bent parts (19b) of the claw metals.SELECTED DRAWING: Figure 6

Description

The present invention relates to a scaffolding plate in a scaffolding structure, particularly a scaffolding plate provided with "inner claw method" claw fittings, and a scaffolding plate portion that closes a gap generated between scaffolding plates arranged opposite to each other in the longitudinal direction. Regarding what was provided.

Conventionally, in a scaffolding structure constructed by fixing a horizontal member to a support column arranged apart from each other, a temporary scaffold has a scaffolding plate erected on a pair of separated horizontal members, whereby a worker's work is performed. It constitutes a space and a work floor that can be accessed.

The scaffolding board is provided with a pair of claw fittings protruding from the side frame portions at both ends in the longitudinal direction of the scaffolding board main body constituting the floor board portion, and the hook portions of the claw fittings are mounted on the horizontal member. By doing so, it is erected between a pair of horizontal members.

By the way, since the work floor is formed so as to extend long along the outer wall of a building or the like, scaffolding boards are provided on a pair of adjacent horizontal members corresponding to the distance between a large number of separated horizontal members. It is erected and scaffolding boards are continuously installed in the longitudinal direction. At this time, a gap is generated between the scaffolding plates arranged so as to face each other via one horizontal member.

However, such a gap is dangerous because it causes jigs and other small articles to fall to the ground, so it is preferable to close it as much as possible.

For this reason, conventionally, a scaffolding board provided with means for closing the gap has been proposed.

Japanese Unexamined Patent Publication No. 2019-15567

By the way, regarding the temporary scaffolding structure and the scaffolding board, the product of the standard A (tentative name) as shown in FIG. 1 (A) is used in the field, but in the present applicant, separately from this, FIG. 1 A product of standard B (tentative name) as shown in (B) is under development.

In the scaffolding structure, the fixing means 2 (12) made of a flange member with a wedge hole is fixed to the support column 1 (11), and the fixing means 2 (12) is attached to both ends of the horizontal member 3 (13). The connecting means 4 (14) including the wedge binding means to be fixed is fixed. The scaffolding plate 5 (15) is formed on both sides of the floor plate portion 6 (16) in the width direction by forming side frame portions 7 (17) including side wall portions at both ends in the longitudinal direction. A total of four claw metal fittings 9 (19) positioned and projected from the side frame portions 7, 7 (17, 17) and a total provided at both ends of the scaffolding plate main body portion 8 (18) in the longitudinal direction. It is composed of two end covers 10 (20).

(Standard A)
The standard A scaffolding structure is designed based on a scaffolding board with a width of 240 mm, and the spacing WA (spacing in the direction of the scaffolding board) between the columns 1 and 1 connected by the horizontal member 3 is the book. In the case of the applicant, it is designed in units of 360 mm. In FIG. 1A, the distance WA between the columns 1 and 1 is 360 mm, and the columns 1 and 1 are connected by a horizontal member 3 having a length designed accordingly.

Two types of scaffolding boards 5 are prepared: a scaffolding board having a standard width (width dimension of 490 mm) and a scaffolding board having a half width (width dimension of 240 mm). FIG. 1A shows a half-width scaffolding board. ing.

The scaffolding plate 5 projects claw metal fittings 9 and 9 having hook portions from both sides in the width direction at the ends of the scaffolding plate main body portion 8. The claw metal fittings 9 and 9 are displaced from the base portion fixed to the side frame portion of the scaffolding plate 5 toward one direction in the width direction of the floor plate portion 6 via the bent portion. Therefore, in the case of the standard A, one of the claw fittings 9 is displaced so that the hook portion is located inside the floor plate portion 6, but the other claw fitting 9 has the hook portion positioned outside the floor plate portion 6. It is displaced so as to do so, and is composed of so-called "outer claw method" claw metal fittings.

The distance wa between the hook portions of the pair of claw metal fittings 9 and 9 is set to be substantially equal to the width dimension of the scaffolding plate main body portion 8, and the pair of scaffolding plates 5 and 5 face each other via the horizontal member 3. In the arranged state, the hook portions of the claw metal fittings 9 facing each other are arranged side by side so that they can be mounted on the horizontal member 3. That is, the hook portions of a total of four claw fittings 9 having the two claw fittings 9 and 9 facing each other are mounted on the horizontal member 3.

(Standard B)
The standard B scaffolding structure is designed based on the yard (inch) method in dimensions, and the spacing WB (spacing with respect to the end direction of the scaffolding board) between the columns 11 and 11 connected by the horizontal member 13 is , 305 mm is designed as a unit. In FIG. 1B, the distance WB between the columns 11 and 11 is set to 305 mm, and the columns 11 and 11 are connected by a horizontal member 13 having a length designed accordingly.

The scaffolding board 15 is formed by following the dimensions of the standard A, and two types of scaffolding boards having a standard width (width dimension of 490 mm) and a half-width (width dimension of 240 mm) are prepared. FIG. (B) shows a half-width scaffolding board.

The scaffolding plate 15 projects claw metal fittings 19 and 19 having hook portions from both sides in the width direction at the ends of the scaffolding plate main body portion 18. The claw metal fittings 19 and 19 are displaced from the base fixed to the side frame portion 17 of the scaffolding plate 15 toward the inward direction in the width direction of the floor plate portion 16 via the bent portion, that is, a pair. The hook portions of the claw fittings 19 and 19 are both displaced so as to be located inside the floor plate portion 6, and are composed of so-called "inner claw method" claw fittings. The details of this point will be described later together with the embodiment of the present invention.

The distance wb between the hook portions of the pair of claw metal fittings 19 and 19 is designed to be smaller than the width dimension of the scaffolding plate main body portion 18, and the pair of scaffolding plates 15 and 15 are arranged to face each other via the horizontal member 13. In this state, the hook portions of the claw fittings 19 facing each other are arranged side by side so that they can be mounted on the horizontal member 13. That is, the hook portions of a total of four claw metal fittings 19 in which the two claw metal fittings 19 and 19 which are respectively referred to as the "inner claw method" are opposed to each other are mounted on the horizontal member 13.

(Incompatibility)
As a result of the above, in the case of the scaffolding structure constructed based on the standard B, that is, when the spacing dimension of the columns 11 and 11 connected by the horizontal member 13 is the above spacing WB (305 mm), FIG. As shown in (B), the claw metal fitting 19 which is the "inner claw method" of the scaffolding plate 15 can be mounted on the horizontal member 13, but as shown in FIG. 1 (C), based on the standard A. The claw metal fitting 9 which is the "outer claw method" of the formed scaffolding plate 5 cannot be mounted on the horizontal member 13.

As shown in FIG. 1 (C), even if an attempt is made to mount the scaffolding plate 5 used in the standard A on the horizontal member 13 connecting the columns 11 and 11 constructed based on the standard B, "outside". Since the hook portion of the claw fitting 9 which is defined as the "claw method" is interfered with by the wedge member provided in the connecting means 14 of the horizontal member 13 and the flange member constituting the fixing means 12 of the support column 11, the hook portion is used. Cannot be locked and fixed well.

Therefore, it can be mounted only on the scaffolding plate 15 equipped with the claw metal fittings 19 configured by the "inner claw method" as described above on the horizontal member 13 in the scaffolding structure constructed based on the standard B. There is a situation.

(Problem to be Solved by the Present Invention)
As described above with respect to the background technology, when connecting the scaffolding plates in the longitudinal direction of the scaffolding structure, it is desired to close the gap generated between the scaffolding plates arranged so as to face each other via one horizontal member. Therefore, a scaffolding board provided with means for closing the gap as shown in Patent Document 1 is being proposed.

However, according to the knowledge of the present inventor, the conventional technique for closing the gap relates to a scaffolding board equipped with an "outer claw method" claw metal fitting, and such a conventional technique is an "inner claw method". There is a problem that it is difficult to apply to scaffolding boards equipped with claw metal fittings.

The means for closing the gap is preferably composed of an eaves plate portion extending from the end cover 20 of the scaffolding plate 15 toward the space above the horizontal member 13, but as described above, the "inner claw" is used. Since the pair of claw metal fittings 19 and 19 described as "method" are displaced so that the hook portion is located inside the floor plate portion 6 via the bent portion, the end cover is located between them. It is difficult to attach the 20 to the end of the scaffolding plate main body 18.

In this regard, it is also possible to fix the claw metal fittings of the "inner claw method" to the end cover 20 and to attach the end cover 20 integrated with the claw metal fittings to the end portion of the scaffolding plate main body portion 18. According to this, the end cover can be easily attached to the end of the scaffolding plate main body. However, it is not preferable to provide the claw fitting 19 on the end cover because the safety of supporting the scaffolding plate 15 in a stable and firm manner must be ensured.

Therefore, it is desirable that the claw metal fitting 19 is firmly fixed to the side frame portion 17 of the scaffolding plate main body portion 18 even in the case of the "inner claw method", and in such a configuration, the gap is closed. It is preferable that the means is provided on the end cover 20 so that the end cover 20 can be easily attached to the end of the scaffolding plate main body 18.

An object of the present invention is to provide a scaffolding board capable of realizing such a preferable configuration.

Therefore, what is configured by the present invention as a means is a scaffolding plate erected on a pair of separated horizontal members in a scaffolding structure in which the horizontal members are firmly fixed to the separately arranged columns. Is a scaffolding plate main body having side frame portions formed on both sides in the width direction of the floor plate portion, a pair of claw metal fittings located at both ends in the longitudinal direction and projecting from the side frame portion, and the length of the scaffolding plate main body. It is composed of end covers provided at both ends in the direction, and the claw fittings are each in the width direction of the floor plate portion from the base fixed to the inside of the side frame portion of the scaffolding plate main body portion via the bent portion. A hook portion that is displaced inward and protrudes in the longitudinal direction from both ends of the scaffolding plate main body in the longitudinal direction is provided together with the bent portion, and the hook portion is configured to be mounted on the horizontal member. The end cover is located between the upper plate portion and the lower plate portion that cover the longitudinal end portion of the scaffolding plate main body portion from above and below, and a pair of claw fittings provided at the longitudinal end portion. A scaffolding plate portion that covers a part of the horizontal member on which the hook portion is mounted is provided from above, and the upper plate portion and the lower plate portion are located on both sides of the eaves plate portion, and the upper plate portion and the lower plate portion are the longitudinal end portions of the scaffolding plate main body portion. A first connecting portion and a second connecting portion are provided so as to cross and connect the two, and the depth is deep toward the first connecting portion between the first end portions of the upper plate portion and the lower plate portion facing the first claw metal fitting. Along with forming the first opening, a second opening having a shallow depth toward the second connecting portion (34B) is formed between the second ends of the upper plate portion and the lower plate portion facing the second claw metal fitting. It is in the point of being.

In a preferred embodiment, the pair of first and second claw fittings on both sides of the longitudinal end of the scaffold plate body is the first with respect to the deviation length of the bent portion with the hook portion displaced from the base. It is formed so that the deviation length of the bent portion of the 1st claw metal fitting is large and the deviation length of the bent portion of the 2nd claw metal fitting is small, and at least the bent portion and the scaffold plate of the 1st claw metal fitting are formed. A gap is formed between the end portion of the main body and the upper plate portion and the lower plate portion of the end cover are connected by the first connecting portion and the second connecting portion, and the upper plate portion and the lower plate portion are connected. Both ends of the portion form a deep first opening toward the first connecting portion between the first end portion of the upper plate portion and the lower plate portion facing the first claw metal fitting, and the second claw metal fitting. When a second opening having a shallow depth toward the second connecting portion is formed between the second end portions of the upper plate portion and the lower plate portion facing each other, and (A) the first connecting portion is inserted into the gap. The second connecting portion is configured so as to be separated from the bent portion of the second claw metal fitting, and (B) the end cover is moved in a posture along the end portion of the scaffold plate main body portion, and the first When the connecting portion is escaped from the gap, the second connecting portion is close to the bent portion of the second claw fitting, and the first end portion of the upper plate portion is close to the bent portion of the first claw fitting. The second end portion of the upper plate portion is configured to be in a positional relationship close to the bent portion of the second claw metal fitting, and the end cover is fixed to the scaffold plate main body portion at the position (B). Has been done.

The eaves plate portion of the end cover is extended flush with each other from the upper plate portion, and is supported by connecting a support plate portion extending diagonally upward from the lower plate portion to the vicinity of the tip of the eaves plate portion. The hook portion of the claw fitting has an inclined edge inclined diagonally downward from the upper part of the tip portion, and each claw of the scaffolding plate arranged so as to face each other with respect to one horizontal member. When the hook portion of the metal fitting is mounted on the horizontal member, the inclined edge of the hook portion on one scaffold plate and the support plate portion of the end cover on the other scaffold plate are arranged so as to face each other. Is preferable.

A drop lock is provided on the hook portion of each claw metal fitting, and the drop lock is provided on the side portion of the hook portion so as to be vertically movable and swingable via a pin, and can be unlocked by being lifted by an operator with a fingertip. It is configured to hold the posture and move downward by receiving the contact of the horizontal member that enters the hook part from the unlocked posture to automatically hold the locked posture, and the end cover is the eaves plate portion. It is located on both sides of the claw and is configured to form an opening through which the operator's finger can be inserted toward the falling lock of at least one of the claw fittings.

According to the present invention, in the scaffolding plate 15 provided with the claw fittings 19 and 19 of the "inner claw method", the end cover 20 provided with the eaves plate portion 33 is placed between the claw fittings 19 and 19 of the scaffolding plate main body portion 18. Since it can be mounted without difficulty, it becomes possible to provide a scaffolding plate 15 that meets the conventional demand for closing a gap.

Regarding the conventional standard A and standard B scaffolding structures, (A) is a plan view showing the relationship between the horizontal material in the standard A scaffolding structure and the scaffolding board equipped with the "outer claw method" claw fittings, (B). ) Is a plan view showing the relationship between the horizontal material in the standard B scaffolding structure and the scaffolding board equipped with the "inner claw method" claw metal fittings, and (C) is for the horizontal material in the standard B scaffolding structure. It is a top view explaining the state that the claw metal fitting of "outer claw method" cannot be mounted. It is a top view which shows an example of the scaffolding structure constructed based on standard B. It is a perspective view which shows the claw metal fitting and the scaffolding plate main body part in the disassembled state about the claw metal fitting of the "inner claw system" in 1 Embodiment of this invention. The state in which the "inner claw method" claw metal fitting in one embodiment of the present invention is attached to the scaffolding plate main body is shown, (A) is a perspective view, and (B) is a plan view. The hook portion and the falling lock of the claw metal fitting in one embodiment of the present invention are shown, and (A) is a partial cross section of a state in which the falling lock having a fixed posture with respect to the claw metal fitting is temporarily placed on a horizontal member. (B) is an enlarged view of the falling lock in the state of (A), and (C) is a side view showing a state in which the horizontal member is facing the claw metal fitting with the falling lock in the unlocking posture. FIG. 3D is an enlarged view of the falling lock in the state of (C), and FIG. A side view showing, (F) is an enlarged view of the falling lock in the state of (E), and (G) is a side view showing a state in which the falling lock has fallen and the horizontal member is locked by the hook portion in a partial cross section. H) is an enlarged view of the falling lock in the state of (G). FIG. 3 is a plan view showing a state in which a pair of scaffolding plates are mounted facing each other with respect to a horizontal member with respect to one embodiment of the scaffolding plate to which the end cover of the present invention is attached. Regarding one embodiment of the present invention, (A) is a perspective view showing a scaffolding plate main body and an end cover in which an "inner claw method" claw metal fitting is fixed, and (B) is an end cover on the lower side. The perspective view which shows the state seen from the side, (C) is the perspective view which shows the metal plate material for forming a bent end cover. Regarding the method of attaching and fixing the end cover to the end of the scaffolding plate main body, the state where the end cover faces the end of the scaffolding plate main body is shown, (A) is a perspective view, and (B) is a perspective view. It is a bottom view. Regarding the method of attaching and fixing the end cover to the end of the scaffolding plate main body, the end cover is placed on the end of the scaffolding plate main body in an inclined posture, and the first connecting plate is attached to the bent part of the first claw metal fitting. The superimposed state is shown, (A) is a perspective view, (B) is a bottom view. Regarding the method of attaching and fixing the end cover to the end of the scaffolding plate main body, the end cover was put on the end of the scaffolding plate main body, and the second connecting plate was brought close to the bent part of the second claw metal fitting. The state is shown, (A) is a perspective view, (B) is a bottom view. Regarding one embodiment of the present invention, a scaffolding plate to which an end cover is attached is shown, (A) is a plan view, and (B) is a bottom view. The cross section of the end cover is shown, (A) is a sectional view taken along line AA of FIG. 11 (A), (B) is a sectional view taken along line BB of FIG. 11 (A), and (C) is FIG. 11 (A) is a sectional view taken along line CC, and (D) is a sectional view taken along line DD of FIG. 11 (A). The cross section of the scaffolding plate at the portion where the end cover is attached is shown, (A) is a sectional view taken along line EE of FIG. 11 (B), and (B) is a stack of a plurality of scaffolding plates for storage and the like. It is sectional drawing which shows the state at the time. Regarding the embodiment of the present invention, a half-width scaffolding board in which two pieces are arranged side by side from one direction is made to face one horizontal member, and one standard-width scaffolding board is made to face from the other direction. It is a perspective view which shows the state. From the state of FIG. 14, it is a perspective view which shows the state in which a half-width scaffolding board in which two pieces are arranged side by side and one piece of standard-width scaffolding board are crossed and mounted on a horizontal lumber. It is a perspective view which shows the relationship between the hook part in one scaffolding board which was put together, and the support plate part of the end cover in the other scaffolding board.

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

(Example of scaffolding structure)
The present invention is a structure of a temporary scaffold based on the standard B shown in FIG. 1 (B) described above, and the columns 11 and 11 are connected by a horizontal member 13 and are separated from each other with respect to a pair of horizontal members 13. The scaffolding plate 15 is constructed by mounting and erection the "inner claw method" claw metal fittings 19, and an example of the scaffolding structure is shown in FIG.

In FIG. 2, the horizontal members 13a connect columns erected at intervals WB (305 mm) to each other. Further, the horizontal member 13b connects the columns erected with an interval of WB × 2 (610 mm) to each other. Further, the horizontal member 13c connects the columns erected at intervals WB × 3 (in the standard, it is 914 mm instead of 915 mm) to each other.

The scaffolding plate 15 is used by the scaffolding plate 15a having a half width (width dimension 240 mm) as described above and the scaffolding plate 15b having a standard width (width dimension 490 mm) alone or in combination. As for the standard width scaffolding plate 15b, two scaffolding plate main bodies 18 used for the half-width scaffolding plate 15a are juxtaposed with each other via a gap (10 mm) and connected to each other by sideways connecting metal fittings (not shown). It is configured by fixing.

In both the half-width scaffolding plate 15a and the standard-width scaffolding plate 15b, the "inner claw method" claw fittings 19 and 19 are projected from both sides in the width direction at both ends, and the hook portion of the claw fitting 19 is projected. Is mounted on the horizontal member 13.

In the case of the illustrated example, one half-width scaffolding plate 15a is erected between the horizontal member 13a and the horizontal member 13c. Two half-width scaffolding plates 15a and 15a are erected side by side between the horizontal member 13b and the horizontal member 13c. Following this, one standard width scaffolding board 15b is mounted on the horizontal member 13b, and one half-width scaffolding board 15a and one standard width scaffolding board 15b are mounted on the horizontal member 13c. Are installed side by side. The columns on the side facing the outer wall of a building or the like are connected by a long connecting material 21, and the columns on the opposite side (the side of the external space) are provided with a handrail material 22 such as a leading handrail. There is.

(Inner claw type claw metal fittings)
3 to 5 show an "inner claw method" claw fitting 19 fixed to the scaffold plate 15.

As shown in FIG. 3, the scaffolding plate main body 18 of the scaffolding plate 15 forms side frame portions 17 and 17 on both sides of the plate-shaped floor plate portion 16 in the width direction, and the side frame portion 17 is shown in FIG. In the case of the example, the side wall portion 17a bent from the side edge of the floor plate portion 16 and the bent wall portion 17b bent from the side wall portion 17a to the lower side of the floor board portion 16 are provided.

As shown in FIGS. 3 and 4, the pair of claw fittings 19 have a base portion 19a fixed to the inside of the side wall portion 17a via a rivet or other fixing tool 23, and a base portion 19a to the floor plate portion 16 respectively. It is provided with a bent portion 19b that is bent inward in the width direction, and a hook portion 19c that protrudes from the end edge of the floor plate portion 16 in a state of being substantially parallel to the base portion 19a from the bent portion 19b. Is provided with a drop lock 24. As a result, in the state where the pair of claw metal fittings are fixed to the scaffolding plate 15, the bent portions 19b and 19b are opposed to each other from the base portions 19a and 19a, and the hook portions 19c and 19c are placed in the width direction of the floor plate portion 16. It constitutes an "inner claw method" claw fitting that is displaced inward.

At this time, the first claw metal fitting 19A and the second claw metal fitting 19B are configured by the pair of claw metal fittings, and the first claw metal fitting 19A has a deviation length of the bent portion 19b in which the hook portion 19c is displaced from the base portion 19a. The deviation length t1 of the bent portion 19b and the deviation length t2 of the bent portion 19b in the second claw metal fitting 19B are formed so as to be t1> t2.

Then, at least a gap s1 is provided between the bent portion 19b of the first claw metal fitting 19A and the end portion of the scaffolding main body portion 18 (the edge of the floor plate portion 16 facing the bent portion 19b and the bent wall portion 17b). Is formed. In the case of the illustrated embodiment, a gap s2 is also formed between the bent portion 19b of the second claw metal fitting 19B and the end portion of the scaffolding main body portion 18.

As shown in FIG. 5, the hook portion 19c forms a notch portion 25 that opens downward so as to hold the horizontal member 13 from above, and the bent portion 19b sandwiches the notch portion 25. The rear jaw portion 26 and the front jaw portion 27 on the distal end side are provided, and the drop lock 24 is provided on the side surface of the rear jaw portion 26. An inclined edge 28 is formed on the front surface of the front jaw portion 27 so as to be inclined diagonally downward from the upper part.

(Falling lock)
The drop lock 24 includes a driven portion 24a facing the upper side of the notch portion 25 and a lock portion 24b facing the lower side, and two pins 29a and 29b provided on the rear jaw portion 26 are used as guide window holes 30 of the drop lock 24. By inserting it into the window, it is attached freely.

As shown in the figure, the guide window hole 30 includes a vertical passage 30a extending in the vertical direction and an upper horizontal passage 30b bent from the upper end of the vertical passage 30a and extending upward (diagonally to the left in the drawing) of the notch 25. It is provided with a lower horizontal passage 30c that bends from the lower end of the vertical passage 30a and extends in the opposite direction of the upper horizontal passage 30b.

As shown in FIGS. 5A and 5B, the falling lock 24 has a lower pin 29b located at the end of the lower horizontal passage 30c and an upper pin at the bending portion of the vertical passage 30a and the upper horizontal passage 30b. When the 29a is positioned, the fixed posture P1 is held.

In this fixed posture P1, the drop lock 24 can temporarily place the scaffolding plate 15 by placing the lock portion 24b on the horizontal member 13 as shown in FIG. 5 (A). .. When the lock portion 24b receives the weight of the scaffold plate 15, the falling lock 24 generates a moment in the direction of the clock hand shown in the figure with the lower pin 29b as a fulcrum, but the bending portions of the vertical passage 30a and the upper horizontal passage 30b are generated. It is received by the contact of the upper pin 29a, thereby holding the fixed posture P1.

When the scaffolding plate 15 is lifted, the operator moves the falling lock 24 in the fixed posture P1 with a fingertip or the like, and the lower pin 29b is positioned at the bending portion of the vertical passage 30a and the lower horizontal passage 30c, FIG. (C) As shown in (D), in the state where the falling lock 24 is suspended by the upper pin 29a, the weight of the driven portion 24a causes a moment in the counterclockwise direction shown in the figure, and the driven portion 24a is cut out. The unlocking posture P2 is such that the lock portion 24b is moved into the portion 25 and retracted from the notch portion 25. The moment is received by the contact between the upper horizontal passage 30b and the refraction corner portion of the vertical passage 30a with respect to the upper pin 29a, and the refraction of the lower horizontal passage 30c and the vertical passage 30a with respect to the lower pin 29b. It is received by the corner portion coming into contact with the corner portion, thereby holding the unlocking posture P2.

As shown in FIGS. 5 (E) and 5 (F), when the cutout portion 25 of the hook portion 19c faces the horizontal member 13 from above and descends, the horizontal member 13 that enters the cutout portion 25 falls. It comes into contact with the driven portion 24a of the lock 24 and is pushed as shown by the arrow in the figure. As a result, the drop lock 24 is rotated from the unlocking posture P2 while accepting the upper pin 29a in the upper lateral passage 30b. As the rotation progresses, as shown in FIG. 5 (F), when the posture of the upper lateral passage 30b is changed so as to be in the diagonally upward posture, the upper pin 29a is directed toward the end of the upper lateral passage 30b. Since the lower pin 29b is directed above the vertical passage 30a, the falling lock 24 is lowered by its own weight.

As a result, as shown in FIGS. 5 (G) and 5 (H), the drop lock 24 receives a moment in the clockwise direction shown by its own weight in a state where the end of the upper lateral passage 30b is suspended by the upper pin 29a. While rotating, the driven portion 24a is retracted from the notch portion 25, and the lock portion 24b is advanced toward the notch portion 25. As a result, the lock portion 24b holds and locks the horizontal member 13 from below. At this time, since the lower pin 29b is sandwiched by the vertical passage 30a, the falling lock 24 is placed in a non-rotatable state and holds the locked posture P3 in which the horizontal member 13 is locked.

As described above, the falling lock 24 is configured to move downward and automatically hold the locked posture P3 by receiving the contact of the horizontal member 13 entering the notch 25 from the unlocked posture P2. There is.

(End cover)
As shown in FIG. 6, end covers 20 are attached to both ends in the longitudinal direction of the scaffolding plate main body 18 provided with the pair of claw metal fittings 19A and 19B described in the above-mentioned "inner claw method". , Provided as a scaffolding board 15.

As shown in FIG. 7, the end cover 20 includes an upper plate portion 31 and a lower plate portion 32 that cover the longitudinal end portion of the scaffolding plate main body portion 18 from above and below, and a first portion provided at the longitudinal end portion. The eaves plate portion 33 located between the claw fittings 19A and the second claw fittings 19B and covering the space above the horizontal member 13 on which the hook portion 19c is mounted from above, the first claw fittings 19A and the second claws. A pair of first connecting portions 34A and second connecting portions 34B for connecting the upper plate portion 31 and the lower plate portion 32 are provided at positions close to the bent portions 19b and 19b of the metal fittings 19B, respectively. As shown in the illustrated embodiment, the first and second connecting portions 34A and 34B are preferably configured so as to cover the end surface of the longitudinal end portion of the scaffolding plate main body portion 18 with a metal plate. Although they are referred to as the first and second connecting plate portions 34A and 34B, it should be understood that they do not necessarily have to be plate-shaped. Further, in the illustrated embodiment, the first connecting plate portion 34A and the second connecting plate portion 34B are shown to be separated from each other, but one plate-shaped material in which both plate portions are connected and integrated with each other. It may be configured by.

In the case of the illustrated embodiment, as shown in FIG. 7C, the end cover 20 is formed by bending one metal plate, and the upper plate portion 31 is in the unfolded state before bending. And the lower plate portion 32 are arranged to face each other, the eaves plate portion 33 is extended flushly from the upper plate portion 31, and the lower plate portion 32 is bent and erected over the entire width of the lower plate portion 32 via the folding curve M1. The wall portion 35 is extended, and support plate portions 36 are provided to connect the bent upright wall portion 35 and the eaves plate portion 33 to each other via a folding curve M2, and are located on both sides of the support plate portion 36. Then, the connecting plate portions 34A and 34B are projected from the bent upright wall portion 35. The support plate portion 36 forms a polymer plate portion 37 to be polymerized on the eaves plate portion 33 via a fold curve M3 parallel to the fold curve M2.

Therefore, one metal plate is formed by bending the folding curve M2 provided on the eaves plate portion 33 of the upper plate portion 31 to polymerize the polymer plate portion 37 on the lower side of the eaves plate portion 33. By bending the folded curve M3 from the laminated plate portion 37, the support plate portion 36 is inclined at a sharp angle with respect to the eaves plate portion 33, and further, the bent upright wall portion 35 and the lower plate portion 32 are bent through the folded curve M1. By bending the lower plate portion 32, the lower plate portion 32 is arranged to face each other in parallel with the upper plate portion 31, thereby forming the end cover 20. At this time, the support plate portion 36 is integrally connected to the laminated plate portion 37 in a state of extending diagonally upward from the bent upright wall portion 35, and the connecting plate portions 34A and 34B have the tip of the upper plate. It is fixed by welding or the like while being abutted against the lower surface of the portion 31.

In the first connecting plate portion 34A and the second connecting plate portion 34B facing the first claw fitting 19A and the second claw fitting 19B, respectively, the width of the first connecting plate portion 34A is narrowed with respect to the width dimension, and the second connecting plate portion 34A is connected. The plate portion 34B is formed so as to be wide. Both ends of the upper plate portion 31 and the lower plate portion 32 constitute first end portions 31A and 32A facing the first connecting plate portion 34A and second end portions 31B and 32B facing the second connecting plate portion 34B. do.

Therefore, as shown in FIG. 7B, a first opening 38A having a deep depth toward the first connecting plate portion 34A is formed between the first end portions 31A and 32A, and the second end portion 31B, A second opening 38B having a shallow depth is formed between the 32B toward the second connecting plate portion 34B.

In the end cover 20 formed as described above, the upper plate portion 31 is provided with a pair of parallel raised portions 39 protruding from the upper surface and a pair of protrusions 40 protruding from the lower surface. Further, in the lower plate portion 32, a convex portion 41 protruding from the lower surface and a concave portion 42 recessed from the lower surface are arranged side by side on both sides of the center of the scaffolding plate main body in the width direction.

(How to attach the end cover)
8 to 10 show a method of attaching the end cover 20 to the longitudinal end portion of the scaffolding plate main body portion 18.

As shown in FIG. 8, the end cover 20 has a second end cover with respect to the longitudinal end portion of the scaffolding plate main body 18 provided with the first claw fitting 19A and the second claw fitting 19B, which are defined as the “inner claw method”. The 1 opening 38A is tilted so as to face the first claw fitting 19A. Therefore, the floor plate portion 16 and the bent wall portion 17b facing the first claw fitting 19A are placed on the upper plate portion 31 and the lower plate portion while the first claw fitting 19A is inserted into the first opening 38A in an inclined posture. It is made to enter between the first ends 31A and 32A of 32.

As a result, the end cover 20 in the inclined posture can be advanced toward the first claw metal fitting 19A in the width direction of the scaffolding plate main body 18, so that the end cover 20 is secondly connected to the second end portions 31B and 32B. The plate portion 34B can be moved so as to be close to the end portion of the scaffolding plate main body portion 18 without being hindered by the second claw fitting 19B, that is, without interfering with the second claw fitting 19B.

Specifically, as shown in FIG. 8, the end cover 20 advancing in an inclined posture has the first connecting plate portion 34A in the gap s1 of the bent portion 19b in the first claw fitting 19A, as shown in FIG. By inserting it, it can be advanced to a position overlapping the bent portion 19b. At this time, the second end portions 31B and 32B on the opposite sides are located at positions that do not interfere with the second claw fitting 19B, and the second connecting plate portion 34B is separated from the bent portion 19b of the second claw fitting 19B. Therefore, the posture of the end cover 20 can be changed from the tilted posture to a predetermined posture parallel to the end of the scaffolding plate main body portion 18 as shown in FIG. As a result, the floor plate portion 16 and the bent wall portion 17b facing the second claw fitting 19B are allowed to enter between the second end portions 31B and 32B.

At this time, in the end cover 20, the bent upright wall portion 35 is along the edge of the bent wall portion 17b in the scaffolding plate main body 18, and the protrusions 40, 40 of the upper plate portion 31 are in the scaffolding plate main body 18. It is along the edge of the floor board portion 16.

Therefore, as shown in FIG. 10, the first connecting plate portion 34A is escaped from the gap s1 by moving the entire end cover 20 along the end portion of the scaffolding plate main body portion 18 as shown by the arrow in the drawing. When the second connecting portion 34B moves to a position close to the bent portion 19b of the second claw fitting 19B, the end cover 20 is arranged at the center portion in the width direction of the scaffolding plate main body portion 18. Therefore, in this state, although not shown, the upper plate portion 31 is fixed to the floor plate portion 16 by welding or the like, and the lower plate portion 32 is fixed to the bent wall portion 17b by welding or the like. , The installation of the end cover 20 is completed.

In this state, the first end portion 31A and the second end portion 31B of the upper plate portion 31 are configured to cover the bent portion 19b of the first claw fitting 19A and the second claw fitting 19B, respectively. Is preferable.

As shown in FIG. 6, when the scaffolding plate 15 is installed by mounting the claw metal fittings 19 on the horizontal member 13, the upper plate portion 31 of the end cover 20 extends from the floor plate portion 16 over almost the entire width of the floor plate portion 16. Along with the protrusion, the eaves plate portion 33 protrudes to an upper position of the horizontal member 13, whereby most of the gap between the end portion of the floor plate portion 16 and the horizontal member 13 is closed.

As shown in the figure, the eaves plate portion 33 is formed in a shape that is substantially trapezoidal in a plan view, and an opening U of a gap is left between both side edges of the eaves plate portion 33 and the claw fitting 19. This opening U is for the operator to operate the drop lock 24 provided inside the first claw fitting 19A by inserting a fingertip from above. Therefore, when the configuration does not require the insertion of a fingertip, the eaves plate portion 33 may be formed to have a wide width over the entire upper plate portion 31 so as to close the opening U.

11 shows the plane and the bottom surface of the end cover 20 mounted on the scaffolding plate 15, and FIGS. 12 and 13 show the cross section of the end cover 20.

As shown in FIG. 12, in the end cover 20, the bent upright wall portion 35 is in contact with the end edge of the bent wall portion 17b with respect to the end portion of the scaffolding plate main body portion 18, and the protrusion 40 is attached to the floor plate portion 16. The end portion of the scaffolding plate main body portion 18 is sandwiched between the upper plate portion 31 and the lower plate portion 32 in a state of being positioned at a predetermined position by abutting on the edge of the scaffolding plate, and is fixed by welding or the like.

A plurality of scaffolding boards 15 are stacked one above the other during storage and transportation. At the time of laminating, as shown in FIG. 13B, a plurality of sets of two laminated bodies of the lower scaffolding plate 15 with the lower surface facing up and the upper scaffolding board 15 with the lower surface facing down are used as one set. The laminated body is laminated up and down. At this time, between the two scaffolding plates 15 and 15 constituting one set of laminated bodies, the convex portions 41 and the concave portions 42 provided on the lower plate portion 32 of the end cover 20 facing each other are mutual. It is fitted to and thereby prevents misalignment movement in the longitudinal direction and the width direction. Further, between the plurality of sets of laminated bodies, the pair of raised portions 39 provided on the upper plate portion 31 of the end cover 20 facing each other are engaged from the width direction of the scaffolding plate so as to be staggered. , The misalignment movement in the width direction is prevented.

In the above-described embodiment, the configuration of the "inner claw method" claw metal fitting 19 and the end cover 20 for the half-width scaffolding plate 15a has been described. However, the standard width scaffolding plate 15b also has the "inner claw method" claw metal fittings. Since the configurations of 19 and the end cover 20 are different in dimensions and the basic configurations are the same as described above, the description thereof will be omitted.

14 to 16 show a standard-width scaffolding plate 15b facing from one of the horizontal members 13, and two half-width scaffolding plates 15a and 15a facing from the other side by side. , The case of "scaffolding" in which each claw metal fitting 19 is mounted on the horizontal member 13 is shown.

In the case of such a "hook", as shown in FIGS. 15 and 16, in the central portion of the horizontal member 13, the support plate portion 36 of the end cover 20 in the standard width scaffolding plate 15b and the half-width scaffolding. The hook portion 19c of the claw metal fitting 19 on the plate 15a is opposed to the hook portion 19c. In this regard, as described above, the support plate portion 36 of the end cover 20 is formed so as to extend diagonally upward from the bent upright wall portion 35 toward the laminated plate portion 37 of the eaves plate portion 33, and the hook portion. The anterior jaw portion 27 of 19c forms an inclined edge 28 that inclines diagonally downward from the upper part on the front surface, and as shown in FIG. 16, the inclined edge 28 and the support plate portion 36 do not interfere with each other. , The tip of the eaves plate portion 33 can be positioned directly above the hook portion 19c.

11 Support 12 Fixing means (flange member)
13, 13a, 13b, 13c Horizontal member 14 Connecting means (wedge binding means)
15 Scaffolding board 15a Half-width scaffolding board 15b Standard width scaffolding board 16 Floor board part 17 Side frame part 17a Side wall part 17b Folded wall part 18 Scaffolding board body part 19 Claw metal fittings 19A 1st claw metal fittings 19B 2nd claw metal fittings 19a Base 19b Folded part 19c Hook part 20 End cover 21 Long connecting material 22 Handrail material 23 Fixing tool 24 Drop lock 24a Driven part 24b Lock part 25 Notch part 26 Rear jaw part 27 Front jaw part 28 Inclined edge 29a, 29b Pin 30 Guide window hole 30a Vertical passage 30b Upper horizontal passage 30c Lower horizontal passage 31 Upper plate portion 32 Lower plate portion 31A, 32A First end portion 31B, 32B Second end portion 33 Scaffolding plate portion 34 Connecting plate portion 34A First connecting plate portion 34B 2nd connecting plate 35 Folded upright wall 36 Support plate 37 Superposed plate 38A 1st opening 38B 2nd opening 39 Raised 40 Projection 41 Convex 42 Concave t1, t2 Scaffold length s1, s2 Gap P1 Fixed posture P2 Unlocking posture P3 Locking posture U Opening

Claims (4)

It is a scaffolding board erected on a pair of separated horizontal members in a scaffolding structure in which a horizontal member is fixed to a separated column.
The scaffolding plate is located at both ends of the scaffolding plate main body (18) in which side frame portions (17) are formed on both sides of the floor plate portion (16) in the width direction, and protrudes from the side frame portions (17). It is composed of a pair of claw metal fittings (19, 19) and end covers (20) provided at both ends in the longitudinal direction of the scaffolding plate main body (18).
The claw metal fittings (19, 19) have the width of the floor plate portion (16) from the base portion (19a) fixed to the inside of the side frame portion (17) of the scaffolding plate main body portion via the bent portion (19b). A hook portion (19c) that is displaced inward in the direction and protrudes in the longitudinal direction from both ends in the longitudinal direction of the scaffolding plate main body portion (18) together with the bent portion (19b) is provided, and the hook portion is provided with the hook portion. It is configured to be mounted on the horizontal member (13),
The end cover (20) is provided at the upper plate portion (31) and the lower plate portion (32) that cover the longitudinal end portion of the scaffolding plate main body portion (18) from above and below, and at the longitudinal end portion. It is provided with an eaves plate portion (33) that is located between a pair of claw metal fittings (19, 19) and covers a part of the horizontal member on which the hook portion is mounted from above.
A first connecting portion (1st connecting portion) located on both sides of the eaves plate portion (33) and connecting the upper plate portion (31) and the lower plate portion (32) crossing the longitudinal end portion of the scaffolding plate main body portion (18). 34A) and a second connecting portion (34B) are provided, and the first connecting portion (34A) is provided between the first end portions (31A, 32A) of the upper plate portion and the lower plate portion facing the first claw metal fitting (19A). A deep first opening (38A) is formed toward, and the second connection is made between the second end portions (31B, 32B) of the upper plate portion and the lower plate portion facing the second claw metal fitting (19B). A scaffolding board in a scaffolding structure characterized by forming a shallow second opening (38B) towards a portion (34B). The pair of first claw fittings (19A) and second claw fittings (19B) on both sides of the longitudinal end of the scaffolding plate body (18) are of the bent portion (19b) in which the hook portion is displaced from the base. Regarding the deviation length, it is formed so that the deviation length (t1) of the bent portion of the first claw metal fitting is large and the deviation length (t2) of the bent portion of the second claw metal fitting is small. , At least a gap (s1) is formed between the bent portion (19b) of the first claw metal fitting (19A) and the end portion of the scaffolding plate main body portion (18).
The upper plate portion (31) and the lower plate portion (32) of the end cover (20) are connected by the first connecting portion (34A) and the second connecting portion (34B), and are connected to the upper plate portion (31). Both ends of the lower plate portion (32) are directed toward the first connecting portion (34A) between the upper plate portion facing the first claw metal fitting (19A) and the first end (31A, 32A) of the lower plate portion. A second connecting portion (34B) is formed between the second end portions (31B, 32B) of the upper plate portion and the lower plate portion facing the second claw metal fitting (19B) while forming a deep first opening (38A). It forms a shallow second opening (38B) toward
(A) When the first connecting portion (34A) is inserted into the gap (s1), the second connecting portion (34B) has a positional relationship of being separated from the bent portion (19b) of the second claw fitting (19B). Is configured to
(B) When the end cover (20) is moved in a posture along the end of the scaffolding plate main body (18) and the first connecting portion (34A) is escaped from the gap (s1), the second The connecting portion (34B) is close to the bent portion (19b) of the second claw fitting (19B), and the first end portion (31A) of the upper plate portion is the bent portion (19b) of the first claw fitting (19A). ), And the second end (31B) of the upper plate part is configured to be close to the bent part (19b) of the second claw metal fitting (19B).
The scaffolding plate in the scaffolding structure according to claim 1, wherein the end cover (20) is fixed to the scaffolding plate main body portion (18) at the position (B). The eaves plate portion (33) of the end cover (20) extends flushly from the upper plate portion (31) and extends diagonally upward from the lower plate portion (32) (36). Is supported by connecting near the tip of the eaves plate,
The hook portion (19c) of the claw metal fitting (19) is formed with an inclined edge (28) that inclines diagonally downward from the upper portion of the tip portion.
The hook portions (19c) of the claw metal fittings of the scaffolding plates (15a) and (15b) arranged so as to face each other with respect to one horizontal member (13) are mounted on the horizontal member (13). When, the inclined edge (28) of the hook portion in one scaffold plate and the support plate portion (36) of the end cover in the other scaffold plate are configured to be arranged so as to face each other. The scaffolding board in the scaffolding structure according to claim 1 or 2. A drop lock (24) is provided on the hook part (19c) of each claw metal fitting (19).
The drop lock (24) is provided on the side of the hook portion via a pin (29a, 29b) so as to be vertically movable and swingable, and can be lifted with a fingertip to maintain the unlocking posture (P1) and unlock. It is configured to move downward and automatically maintain the locked posture (P2) by receiving contact with the horizontal member (13) that enters the hook portion in the posture.
The end covers (20) are located on both sides of the eaves plate (33) and have openings (U) that allow the operator's fingers to be inserted freely toward the falling lock (24) of at least one of the claw fittings. The scaffolding board in the scaffolding structure according to claim 1, 2 or 3, characterized in that the scaffolding is formed of.

Images