JP5728197B2 - Leading handrail for temporary scaffolding - Google Patents

Description

The present invention relates to a temporary handrail for a temporary scaffold provided with a bracing member used for a temporary scaffold.

When assembling a temporary scaffold used at a construction site or the like, when a second work floor is further installed on the first work floor, a handrail is first placed between the columns erected above the first work floor. A handrail prior construction method for attaching the second work floor after mounting the slab is adopted. Here, the handrail used in the handrail prior construction method is, for example, as described in Patent Document 1, a handrail member disposed horizontally between both pillars and an upper end portion at each end of the handrail member. Has a brace that is installed diagonally between the upper and lower holders at the diagonal positions of the support posts on both sides, and the locking hook provided at the upper end of the brace is inserted into the upper holder from above, The handrails are attached between the support columns on both sides by locking the locking metal fittings provided at the lower end of each to the lower holders.

JP 2006-169919 A

The locking hook provided at the upper end portion of the brace of the handrail described in Patent Document 1 is formed in an overturned L shape, and the downward hanging portion becomes an insertion piece into the upper holder, and the inner angle of the insertion piece A notch portion having a height dimension that matches the height of the upper holder is provided on the side, and a lower end of the notch portion of the insertion piece is a bent portion for preventing the insertion piece. However, even if the locking hook is inserted into the upper holder and the notch of the insertion piece is in contact with the inner surface of the upper holder, if the load is applied to the handrail and the brace is displaced, the notch of the insertion piece There is a problem that the portion is detached from the inner surface of the upper holder, the locking hook is lifted from the upper holder, and it becomes difficult to lock the locking hook to the upper holder. As a measure to prevent the locking hook locked to the upper holder from coming off, it is conceivable to increase the length of the locking hook (insertion piece). The time required for inserting the retaining hook or removing the retaining hook from the upper holder becomes longer, resulting in a problem that the working efficiency of assembling and dismantling the temporary scaffolding is lowered.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a temporary handrail for a temporary scaffold that is easy to attach and detach to and from a column of a temporary scaffold and is difficult to come off.

The preceding handrail for a temporary scaffold according to the first invention that meets the above-described object is a brace that is attached to a supporting column that is provided with a latching bracket having a U-shaped flat cross section at a predetermined interval and that is opposed to the strut. It is a handrail for a temporary scaffold that also serves as a combination,
A horizontal member provided on both sides with first and second latching insertion portions, the first side of which is inserted into the latching bracket of the opposing strut from above;
First and second mounting brackets respectively fixed to the base sides of the first and second latching insertion portions;
First and second bracing members, the upper ends of which are pivotally attached to the first and second mounting brackets via pins or bolts, respectively;
The latch is pressed from the outside by the upper end of the first and second bracing members, which are pivotably provided above the first and second mounting brackets and rotated. A latching piece with a collar located under the bracket,
First and second lower connection fittings that are respectively connected to lower ends of the first and second bracing members and are attached and fixed to the latch fittings provided at positions below the opposing struts. has,
The horizontal member is made of a pipe material, and the first and second hooking insertion portions are fitted into the hooking metal fittings at the front side of bent portions in which both sides of the horizontal member are bent 90 degrees downward respectively. to that have been formed by crushing in width.

Temporary scaffold prior handrail according to the second invention, the strut that faces the flat U-shaped cross section engaging fittings are provided at predetermined intervals, temporary scaffold brace was also combined mounted using the hooking bracket Leading handrail for
A horizontal member provided on both sides with first and second latching insertion portions, the first side of which is inserted into the latching bracket of the opposing strut from above;
First and second mounting brackets respectively fixed to the base sides of the first and second latching insertion portions;
First and second bracing members, the upper ends of which are pivotally attached to the first and second mounting brackets via pins or bolts, respectively;
The latch is pressed from the outside by the upper end of the first and second bracing members, which are pivotably provided above the first and second mounting brackets and rotated. A latching piece with a collar located under the bracket,
First and second lower connection fittings that are respectively connected to lower ends of the first and second bracing members and are attached and fixed to the latch fittings provided at positions below the opposing struts. Have
The first and second mounting brackets have a U-shape that is open downward when viewed from the side, and the upper portion is fixed in a state of sandwiching the first and second latch insertion portions from the front and rear, and the latch piece The upper ends of the first and second mounting brackets are pivotally mounted on the upper positions inside the first and second mounting brackets via mounting pins, and the lower portions of the first and second mounting brackets that are U-shaped are the first and second mounting brackets. It has the 1st and 2nd bracing member attaching part reduced in width according to the thickness of the crushing part of the 1 and 2 bracing members.

The preceding handrail for a temporary scaffold according to the third invention that meets the above-mentioned object is a brace that is attached to a supporting column provided with a latching bracket having a U-shaped flat cross section at a predetermined interval and using the latching bracket. It is a handrail for a temporary scaffold that also serves as a combination,
A horizontal member fixed to the first and second upper coupling fittings, each having first and second latching insertion portions that are mounted on the latching brackets of the opposing struts from above;
First and second bracing members, each having an upper end attached to the first and second upper coupling fittings;
First and second lower connection fittings that are respectively connected to lower ends of the first and second bracing members and are attached and fixed to the latch fittings provided at positions below the opposing struts. Have
The first and second upper connecting fittings are inserted into the latch fitting from above by cutting from the lower side in an inverted V shape or inverted U shape in a side view. A stop insertion portion and first and second bracing member mounting portions to which the first and second bracing members are rotatably attached via pins or bolts;
Moreover, the upper and lower end portions of the first and second bracing members are pressed against the hook metal from the outside, and the hook pieces having the flanges located under the hook metal are the first and second hooks. It is provided at the upper position of the brace member mounting part so as to be rotatable ,
The first and second lower connecting fittings are formed by bending an iron plate into a U shape when viewed from above, and an intermediate portion is provided with an opening into which the latching fitting is fitted, and the hook is attached to the opening. In the state where the fastener is inserted, it is fixed to the latch by a stopper piece having a wedge portion mounted between the upper and lower U-shaped bent portions and the outer plate portion of the latch,
The stopper piece is U-shaped, the wedge portion is formed on one side, and a retaining portion is formed on the other side, and the first and second lower connection fittings are fitted into U-shaped grooves of the stopper piece. a first pin, when removing the stopper from the locking fitting, the missing second pin caught the hooking claw stopper portion that is provided.

In the preceding handrail for the temporary scaffold according to the third aspect of the invention, the first and second upper connecting metal fittings are iron plates, and the first and second hook insertion portions are fitted to the hook metal fittings. The first and second bracing member mounting portions are formed by bending the piece folded in the U-shape and further forming the first and second pipe members. It is preferable that the width is reduced in accordance with the thickness of the crushed portion of the two bracing members.

A temporary handrail for a temporary scaffold according to a fourth aspect of the present invention is a temporary scaffold that is also used as a brace that is attached to a supporting column that is provided with a latching bracket having a U-shaped cross section at a predetermined interval and that is opposed to the column. Leading handrail for
A horizontal member provided on both sides with first and second latching insertion portions, the first side of which is inserted into the latching bracket of the opposing strut from above;
First and second mounting brackets respectively fixed to the base sides of the first and second latching insertion portions;
First and second bracing members, the upper ends of which are pivotally attached to the first and second mounting brackets via pins or bolts, respectively;
The latch is pressed from the outside by the upper end of the first and second bracing members, which are pivotably provided above the first and second mounting brackets and rotated. A latching piece with a collar located under the bracket,
First and second lower connection fittings that are respectively connected to lower ends of the first and second bracing members and are attached and fixed to the latch fittings provided at positions below the opposing struts. Have
The first and second lower connecting fittings are formed by bending an iron plate into a U shape when viewed from above, and an intermediate portion is provided with an opening into which the latching fitting is fitted, and the hook is attached to the opening. In the state where the fastener is inserted, it is fixed to the latch by a stopper piece having a wedge portion mounted between the upper and lower U-shaped bent portions and the outer plate portion of the latch ,
The stopper piece is U-shaped, the wedge portion is formed on one side, and a retaining portion is formed on the other side, and the first and second lower connection fittings are fitted into U-shaped grooves of the stopper piece. a first pin, when removing the stopper from the locking fitting, the missing second pin caught the hooking claw stopper portion that is provided.

In the preceding handrails for temporary scaffolds according to the first to fourth inventions, the front sides of the first and second latch insertion portions are fitted into the latch fittings provided on the opposing struts from above, respectively. Attach and fix the first and second lower connection brackets to the latches provided at the lower positions of the opposing struts (below the latches where the first and second latch insertion portions are respectively fitted). When the first and second brace members provided on the first and second mounting brackets are rotated, the latch pieces are turned into the latch brackets by the upper ends of the first and second brace members. Pressed from the outside, the hook part of the latching piece is located under the latching metal, so even if the first and second latching insertion parts fitted into the latching metal try to move upward Since the hook portion of the latching piece is caught by the lower end of the latching bracket, the first and second latch insertion portions are moved upward. Can be prevented. As a result, when the first and second lower connection fittings are mounted and fixed to the latches at the lower positions of the opposing columns after the horizontal member is attached to the columns by the first and second latch insertion portions. The horizontal member once attached can be prevented from coming off from the opposite strut, the temporary handrail for temporary scaffolding can be efficiently attached to the strut, and when the preceding handrail for temporary scaffolding is attached to the strut, A horizontal member can be stably fixed to the column.
On the other hand, when removing the horizontal member from the support column, if the first and second lower connection fittings are detached from the latch fittings, the state of pressing the latch pieces by the upper ends of the first and second bracing members is released. Then, since the hook portion of the latch piece located under the latch metal is detached from the bottom of the latch metal, the first and second latch insertion portions can be pulled out from the latch metal, respectively. As a result, the first and second lower connection fittings can be detached from the latch and the first and second latch insertion portions can be detached from the latch in a continuous manner. It is possible to efficiently remove the leading handrail from the support post.

In temporary scaffold prior handrail according to the first invention, the horizontal member made from the pipe material, the first, the second hook insertion portion, is bent on both sides of the horizontal members to each 90 degrees lower since the front side of the bent portion is formed by crushing a width that fits the locking bracket, first, horizontal member by fitting the front side of the second hook inserting portion into hooking brackets facing strut When the is attached, the horizontal portion of the horizontal member can be held away from the latch (upward). As a result, the distance between the temporary scaffolding tread board and the horizontal member can be ensured, and the horizontal member can be provided at an appropriate height position with respect to the temporary scaffolding tread board.

In temporary scaffold prior handrail according to the second invention, the first, second mounting bracket, an upper first made in the side view with the lower opening of the U-shaped, the second hook insertion portion is fixed in a state of sandwiching the front and rear, upper end the first lock part, the mounted rotatably via a mounting pin in position inside on the second attachment fitting, first, second attachment fitting Can be easily manufactured, and the attachment of the latching piece becomes easy, and the manufacturing cost is reduced.
In addition, the lower parts of the first and second mounting brackets that are U-shaped have first and second bracing member mounting portions that are reduced in width according to the thickness of the crushed portions of the first and second bracing members. Therefore , the crushing portions of the first and second bracing members can be inserted and attached to the first and second bracing member mounting portions, and the first and second bracing member mounting portions can be attached to the first and second bracing member mounting portions. The width (thickness) of the first and second mounting brackets when the crushing portion of the second bracing member is attached can be reduced. For this reason, the maximum width when folding the temporary handrail for the temporary scaffold can be reduced, and the work for attaching and removing the temporary handrail for the temporary scaffold is facilitated.

In the preceding handrail for temporary scaffolding according to the third invention, the first and second upper connecting fittings are viewed in plan with a width that the first and second latching insertion portions fit into the latching fittings. Thus, the first and second upper connecting fittings can be easily and inexpensively manufactured.
In addition, the first and second bracing member mounting portions are further bent into a U-shaped piece to reduce the width according to the thickness of the crushing portions of the first and second bracing members made of pipe material. If the first and second brace member attaching portions are inserted into the crushed portions of the first and second brace members and attached, the width (thickness) of the first and second upper connecting fittings is set. It is possible to reduce the maximum width when the temporary handrail for temporary scaffolding is folded, and it is easy to attach and remove the temporary handrail for temporary scaffolding.

Third, in the fourth temporary scaffold prior handrail according to the present invention, first, second lower connecting fitting, an iron plate in plan view is formed by bending in a U-shape, the middle portion hanging By a stopper piece having an opening for fitting the fastener, and having a wedge portion mounted between the upper and lower U-shaped bent portions and the outer plate portion of the fastener, with the latch inserted in the opening. Since it is fixed to the latch, the first and second lower connection fittings can be easily and inexpensively manufactured, and the first and second lower connection fittings (the bracing members) can be used as a latch. Can be easily installed and removed.

Third, in the fourth temporary scaffold prior handrail according to the present invention, the stopper piece becomes U-shaped, wedge portion is formed retaining portion to the other one, the first, second lower the connecting fitting, and the first pin fitted into the U-shaped groove of the stopper piece, when removing the stopper piece from locking bracket, the second pin caught the hooking claw retaining portion is provided, the It is possible to stably fix the first and second lower coupling fittings (the bracing members) to the latching fitting.

It is a front view at the time of attaching the preceding handrail for temporary scaffolding which concerns on the 1st Embodiment of this invention to the support | pillar which opposes. It is explanatory drawing at the time of inserting the 2nd latching insertion part in the latching metal fitting from the upper direction. It is explanatory drawing at the time of arrange | positioning so that the 2nd latch insertion part may be inserted in a latch, and the collar part of a latch piece may be hooked on the lower end of a latch. (A), (B), (C) is the front view, side view, and plane sectional view of the second mounting bracket, respectively. (A), (B) is the front view and top view of a 1st, 2nd lower side connection metal fitting, respectively. It is explanatory drawing when the latching metal fitting is inserted in the opening part of a 1st lower side coupling metal fitting. It is explanatory drawing at the time of attaching and fixing the 1st lower side connection metal fitting to a latch metal. It is a front view which shows the folding state of the preceding handrail for temporary scaffolding which concerns on the 1st Embodiment of this invention. It is a front view which shows the state at the time of opening the bracing member of the preceding handrail for temporary scaffolding. It is a front view at the time of attaching the preceding handrail for temporary scaffolds which concerns on the 2nd Embodiment of this invention to the support | pillar which opposes. It is explanatory drawing at the time of inserting the 2nd upper connection metal fitting in a latch metal from upper direction. It is explanatory drawing at the time of arrange | positioning so that the 2nd upper connection metal fitting may be fitted in a latch metal, and the collar part of a latch piece may be hooked on the lower end of a latch metal. (A), (B), (C) is the front view, side view, and top view of a 2nd upper connection metal fitting, respectively. It is a front view which shows the folding state of the preceding handrail for temporary scaffolding which concerns on the 2nd Embodiment of this invention. It is a front view which shows the state at the time of opening the bracing member of the preceding handrail for temporary scaffolding.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
As shown in FIG. 1, a temporary scaffolding handrail 10 for a temporary scaffold according to a first embodiment of the present invention has U-shaped latches 11 and 14 and a latch 12 with a U-shaped cross section provided at predetermined intervals. 13 is a temporary handrail for temporary scaffolding that also functions as a brace that is attached to the support columns 15 and 16 that are arranged to face each other using the latching metal fittings 11 to 14, respectively. A horizontal member 19 having first and second latching insertion portions 17 and 18 fitted on both sides thereof, and first and second latching insertion portions 17 and 18, which are fitted into the fasteners 11 and 12 from the top side. The first and second mounting brackets 20 and 21 respectively fixed to the base side of the first and second mounting brackets 20 and 21 have their upper ends pivotably mounted via bolts 22 respectively. , And second bracing members 24 and 25. Reference numeral 23 denotes a nut that is screwed into the front portion of the bolt 22 to prevent the bolt 22 from falling off. Further, the upper end portions of the first and second bracing members 24 and 25 can be rotatably attached to the first and second mounting brackets 20 and 21 via pins.

Further, the temporary handrail 10 for the temporary scaffold is pivotally provided at the upper position inside the first and second mounting brackets 20 and 21 via a pin (mounting pin) 26 so as to be rotatable. A latching piece 28 having a flange 27 that is pressed from the outside by the upper ends of the first and second bracing members 24, 25 and is positioned below the latches 11, 12. The first and second bracing members 24 and 25 are respectively connected to the lower ends of the struts 15 and 16 and are located below the opposing struts 15 and 16 (the latching fittings into which the second and first latching insertion portions 18 and 17 are respectively fitted. 12 and 11), and first and second lower connection fittings 29 and 30 that are attached and fixed to the latching fittings 13 and 14. Reference numeral 31 denotes a temporary scaffolding tread. Details will be described below.
2 and 3 show a state in which the second mounting bracket 21 is attached to the latching bracket 12. Hereinafter, the second mounting bracket 21 will be described, but the same applies to the first mounting bracket 20.

The support | pillars 15 and 16 and the bracing members 24 and 25 are each formed from the steel pipe material. Here, in addition to the latches 11, 14, 12, and 13 provided at the upper and lower positions on the opposite sides of the columns 15 and 16, another latch is provided on the columns 15 and 16, for example, At a position shifted by 180 ° in the circumferential direction with respect to the metal fittings 11, 14, 12, 13, facing the metal fittings 11, 14, 12, 13 (at the same height position), the metal fittings 11, 14, At positions shifted by 90 ° and 270 ° in the circumferential direction with respect to 12 and 13, they are provided above the latches 11, 14, 12 and 13.

As shown in FIGS. 2 and 3, the horizontal member 19 is made of a pipe material, and the second latching insertion portion 18 (the same applies to the first latching insertion portion 17) is provided on both sides of the horizontal member 19. It is formed by crushing the front side of the bent portion 19 a that is bent downwardly with a width that fits into the latch metal 12. By adopting such a configuration, the horizontal members 19 are attached by fitting the front sides of the first and second latch insertion portions 17 and 18 into the latch brackets 11 and 12 of the opposing support columns 15 and 16, respectively. At this time, the horizontal member 19 can be held upward from the latches 11 and 12. Accordingly, when the temporary scaffolding tread 31 is attached, the height position of the horizontal member 19 with respect to the upper surface of the temporary scaffolding tread 31 can be set to, for example, 900 mm or more. 31 can be provided at a suitable height position.

As shown in FIGS. 4A, 4B, and 4C, the second mounting bracket 21 has a U-shape that is open downward when viewed from the side, and has a second latch insertion portion at the top. A pair of mounting pieces 32 and 33 are provided which are fixed in a state where the 18 is sandwiched from the front and rear. In addition, a second bracing member mounting portion 35 that is reduced in width in accordance with the thickness of the crushing portion 34 of the second bracing member 25 is formed on the lower portion (opening side) of the second mounting bracket 21 that is U-shaped. Is provided. Furthermore, a first through hole 36 through which the pin 26 for attaching the latching piece 28 is inserted is provided above the second mounting bracket 21, and the second bracing member 25 is provided in the second bracing member mounting portion 35. Second through holes 37 through which the bolts 22 for attaching the crushing portions 34 are inserted are formed.

Thereby, the latching piece 28 can be inserted into the upper position inside the first and second mounting brackets 20, 21 and can be pivotably mounted via the pin 26. Further, the crushing portion 32 of the second bracing member 25 may be inserted into the second brace member mounting portion 35 so as to be pivotable via the bolt 22 by being inserted into the upper position inside the second mounting bracket 21. it can. Furthermore, the total width when the crushing portion 32 of the second bracing member 25 is attached to the second bracing member attachment portion 35 using the bolt 22 and the nut 23 is reduced, and the temporary handrail 10 for the temporary scaffolding is provided. Is easy to handle.

With the above configuration, the second latch insertion portion 18 is inserted into the latch bracket 12 of the support column 16, and the first latch insertion portion 17 is inserted into the latch bracket 11 of the support column 15. Thereby, as shown in FIG. 1, the horizontal member 19 can be attached to the support | pillars 15 and 16 in a horizontal state. Then, as shown in FIG. 2, the second brace member 25 whose upper end is pivotably attached to the second brace member attachment portion 35 of the second mounting bracket 21 is rotated to provide the second brace member 25. When the second lower connection fitting 30 connected to the lower end portion of the bracing member 25 is to be attached and fixed to the latch fitting 14, the upper end portion of the second bracing member 25 (the crushing portion of the second bracing member 25) 34), the latching piece 28 is pressed, and the latching piece 28 rotates about the pin 26 as a fulcrum. As a result, as shown in FIG. 3, the latching piece 28 is pressed against the latching metal 12 from the outside, and the collar portion 27 provided at the tip of the latching piece 72 is positioned below the latching metal 12. Move to.

As shown in FIG. 5, the first and second lower connection fittings 29 and 30 are formed by bending an iron plate into a U shape when viewed from above, and are latched at an intermediate portion on the bent side of the U shape. An opening 38 for fitting the metal fittings 13 and 14 is provided. Also, as shown in FIGS. 6 and 7, on the opening side bent in a U-shape, the crushed portions 39 of the brace members formed at the lower ends of the first and second brace members 24 and 25, respectively. Inserted and secured.
6 and 7 show a state in which the first lower connection fitting 29 is attached to the latch fitting 13. Hereinafter, the first lower connection fitting 29 will be described, but the same applies to the second lower connection fitting 30.

The first lower connection fitting 29 has U-shaped bent portions 40 and 41 positioned above and below the latch 13 and the outer plate portion of the latch 13 with the latch 13 inserted in the opening 38. It is fixed to the latching metal 13 by a stopper piece 44 having a wedge part 43 mounted between them. Here, the stopper piece 44 is U-shaped, the wedge portion 43 is formed on one side, and the retaining portion 45 is formed on the other side. The first lower connection fitting 29 has a U-shaped groove 46 on the stopper piece 44. A first pin 47 to be fitted and a second pin 49 on which a latching claw formed at the tip of the retaining portion 45 is caught when the stopper piece 44 is removed from the retaining bracket 13 are provided. Here, the length of the retaining portion 45 is longer than the length of the wedge portion 43 by the length of the latching claw 48 formed at the tip portion. In FIG. 5, reference numerals 50 and 51 denote first and second through holes through which the first and second pins 47 and 49 are inserted, respectively.

Next, the operation of the temporary handrail 10 for temporary scaffolding according to the first embodiment of the present invention will be described.
As shown in FIG. 8, first and second bracing members 24 and 25 are rotatably attached to first and second mounting brackets 20 and 21 fixed to both sides of a horizontal member 19. Thus, the temporary handrail 10 for temporary scaffolding can be folded by rotating the first and second bracing members 24 and 25 on both sides of the horizontal member 19, respectively. For this reason, storage of the handrail 10 for temporary scaffolding becomes easy.

Further, when the temporary handrail 10 for temporary scaffolding is used, as shown in FIG. 9, the first and second bracing members 24 and 25 are respectively rotated on both sides of the horizontal member 19 so that the first and second The two bracing members 24, 25 can be opened. As a result, the first handrail 10 for temporary scaffolding can be moved upward by grasping and lifting the first and second bracing members 24, 25 in the opened state.

Then, as shown in FIG. 2, the first and second bracing members 24, 25 are placed upright with respect to the horizontal member 19, so that the second hook insertion portion 18 is hooked to the post 16. 12, the first latching portion 17 can be inserted into the latch 11 of the support column 15. Thereby, the horizontal member 19 can be attached to the support | pillars 15 and 16 in a horizontal state. Next, as shown in FIG. 3, the second lower connection fitting 30 attached and fixed to the second brace member 25 having the upper end portion provided on the second attachment fitting 21 is intended to be attached to the latch fitting 14. When the second brace member 25 is rotated, the latching piece 28 provided on the second mounting bracket 21 is pressed by the upper end portion of the second brace member 25 and is rotated about the pin 26 as a fulcrum. The front collar part 27 comes to the lower position of the latch 12. On the other hand, the first lower bracing member 24 is intended to attach the first lower connection fitting 29 attached to the first bracing member 24 provided with the upper end portion of the first attachment fitting 20 to the latching fitting 13. , The latching piece 28 provided on the first mounting bracket 20 is pressed by the upper end portion of the first bracing member 24 and rotates around the pin 26, so that the front collar portion 27 is moved. It comes under the latch 11.

As a result, even if the first and second latch insertion portions 17 and 18 inserted into the latch fittings 11 and 12 try to move upward, the flange portion 27 of the latch piece 28 can be attached to the latch fittings 11 and 12. Since it is latched by a lower end part, the upward movement of the 1st and 2nd latching insertion parts 17 and 18 is prevented. As a result, after the horizontal member 19 is attached to the support columns 15 and 16, the first and second bracing members 24 and 25 are rotated so that the first and second lower connection fittings 29 and 30 are attached to the support columns 16 and 15. At the time of attachment, the horizontal member 19 once hooked can be prevented from being detached from the support columns 15 and 16, and the temporary handrail 10 for temporary scaffolding can be efficiently attached to the support columns 15 and 16. Furthermore, when the preceding handrail 10 for temporary scaffolding is attached to the columns 15 and 16, the horizontal member 19 can be stably fixed to the columns 15 and 16.

On the other hand, when the horizontal member 19 is removed from the support columns 15 and 16, the first and second bracing members 24 are released after the first and second lower connection fittings 29 and 30 are fixed to the latch fittings 13 and 14. , 25 is rotated and detached from the latch fittings 13 and 14, the pressing state of the latch piece 28 by the first and second bracing members 24 and 25 is released, and as shown in FIG. The collar portion 27 located under the metal fittings 11 and 12 is detached from the lower position of the latch metal fittings 11 and 12, and the first and second latch insertion portions 17 and 18 are removed from the metal fittings 11 and 12. It can be pulled out. As a result, the first and second bracing members 24 and 25 are detached from the latches 13 and 14 and the first latch insertion portions 17 and 18 are detached from the latches 11 and 12 in a series. The temporary scaffolding handrail 10 can be efficiently removed from the columns 15 and 16.

When the first bracing member 24 is attached to the latch metal 13 via the first lower connection fitting 29 (the second brace member 25 is attached to the latch fitting 14 via the second lower connection fitting 30) The same applies to the case), as shown in FIG. 6, a hooking claw 48 formed at the tip of the stopper 45 of the stopper piece 44 is disposed between the first and second pins 47, 49, When the stopper piece 44 is tilted toward the second brace member 25 while the upper end portion of the claw 48 is in contact with the side portion of the second pin 49, the latching claw 48 is moved to the first and second pins 47, 49. Can pass between. Accordingly, when the tilted stopper piece 44 is moved downward after being made parallel to the support column 16, the wedge portion 43 of the stopper piece 44 has the upper and lower U-shaped bent portions 40, 41 and the outer plate portion 42 of the latch metal 13. The first pin 47 is inserted into the U-shaped groove 46 of the stopper piece 44, and the retaining portion 45 of the stopper piece 44 is inserted between the first and second pins 47 and 49. . Thereby, the attachment of the first bracing member 24 to the latch 13 is completed.

Here, the wedge portion 43 of the stopper piece 44 is interposed between the upper and lower U-shaped bent portions 40 and 41 of the first lower connection fitting 29 and the outer plate portion 42 of the latch fitting 13 provided on the support column 16. After the insertion, even if a force to pull the stopper piece 44 upward acts during use of the temporary handrail 10 for the temporary scaffold, the latching claw 48 provided on the retaining portion 45 of the stopper piece 44 does not move. The stopper piece 44 is prevented from being pulled out by being hooked on the second pin 49. Therefore, the first and second bracing members 24 and 25 can be stably fixed to the columns 16 and 15.

When the stopper piece 44 is pulled out, the stopper piece 44 is moved upward in a state of being parallel to the support column 16 so that the upper end portion of the latching claw 48 is brought into contact with the second pin 49. Next, when the stopper piece 44 is tilted toward the first bracing member 24 in a state where the upper end portion of the latching claw 48 is in contact with the side portion of the second pin 49, the latching claw 48 has the first and first It can pass between the two pins 47 and 49. Thereby, the stopper piece 44 can be pulled out, and the first and second bracing members 24 and 25 can be easily detached from the support columns 16 and 15.

As shown in FIG. 10, a temporary scaffolding handrail 52 for a temporary scaffold according to the second embodiment of the present invention is a latching bracket 53, 54 having a U-shaped cross section provided at a predetermined interval, and a latching bracket 55. , 56 are opposed to the struts 57, 58 which are opposed to each other and are attached to the struts 57, 58 which are opposed to each other by using the hooks 53, 56, 55, 54. , 58, the horizontal member 63 to which the first and second upper connection fittings 61, 62 having the first and second latching insertion portions 59, 60 respectively attached to the latch fittings 53, 55 are fixed. And first and second bracing members 64 and 65 whose upper ends are respectively attached to the first and second upper coupling fittings 61 and 62, and lower ends of the first and second bracing members 64 and 65, respectively. The lower position (second, first, The first and second lower connection fittings 66 and 67 are fixedly attached to the latch fittings 56 and 54 provided on the latch fittings 55 and 53 to which the upper connection fittings 62 and 61 are respectively attached. And have. Details will be described below.

The support columns 57 and 58, the horizontal member 63, and the first and second bracing members 64 and 65 are each formed of an iron pipe material. Here, in addition to the latches 53, 54, 55, and 56 provided at the upper and lower positions on the opposite sides of the columns 57 and 58, another latch is provided on the columns 57 and 58, for example, At positions shifted by 180 ° in the circumferential direction with respect to the metal fittings 53, 54, 55, 56, facing the metal fittings 53, 54, 55, 56 (at the same height position), the metal fittings 53, 54, At positions shifted by 90 ° and 270 ° in the circumferential direction with respect to 55 and 56, they are provided on the upper side of the latches 53, 54, 55 and 56.

As shown in FIGS. 11 and 12, the second upper connecting fitting 62 (the same applies to the first upper connecting fitting 61) is formed as a latch fitting 55 by cutting from the lower side in an inverted V shape when viewed from the side. A second latch insertion portion 60 that is fitted from above and a crushing portion 68 of the second brace member formed at the upper end of the second brace member 65 are rotatably attached via bolts 69. It is separated into a second brace member attaching portion 70 (a first brace member attaching portion in the first upper connection fitting 61). The upper end of the second bracing member 65 (the crushing portion 68 of the second bracing member 65) is pressed from the outside by the upper end of the second bracing member 65 at the upper position thereof. A latching piece 72 having a flange 71 positioned under 55 at its tip is rotatably provided via a pin 73. Reference numeral 74 denotes a nut that is screwed into the tip of the bolt 69 to prevent the bolt 69 from falling off. Here, when attaching the second bracing member 65 (the crushing portion 68 of the second bracing member) to the bracing member attaching portion 70, a pin may be used instead of the bolt 69. Further, the shape of the cut formed in the second upper connection fitting 62 may be an inverted U-shape.

As shown in FIGS. 13A, 13 </ b> B, and 13 </ b> C, the second upper connection fitting 62 has an iron plate and a width W that allows the second latch insertion portion 60 to be fitted into the latch fitting 55. In the plan view, it is formed by being bent into a U-shape, and an inverted V-shaped cut is formed from the lower side at an intermediate portion (both pieces) between the U-shaped folding side and the opening side. For this reason, in the second upper connection fitting 62, the second hook insertion portion 60 is formed on the U-shaped bending side, and the bracing member attachment portion 70 is formed on the opening side. A through hole 75 through which a pin 73 for attaching the retaining piece 72 is inserted is formed above the brace member attaching portion 70.

Here, the bracing member attaching portion 70 is further folded at a piece folded in a U shape (opened side folded in a U shape) and reduced in width according to the thickness of the crushing portion 68 of the second bracing member. The width T is formed. Therefore, the crushing portion 68 of the second bracing member can be inserted and attached to the bracing member attachment portion 70, and the width when the crushing portion 68 of the second bracing member is attached to the bracing member attachment portion 70. Can be made smaller than the width of the latch insertion portion 60. As a result, the total width when the bracing member attaching portion 70 and the squashing portion 68 of the bracing member are pivotally attached using the bolts 69 and nuts 74 is reduced, and the handling of the temporary handrail 52 for the temporary scaffolding can be handled. It becomes easy.

With the above-described configuration, the second hook insertion portion 60 of the second upper connection fitting 62 is inserted into the hook fitting 55 of the column 58, and the first hook of the first upper connection fitting 61 is inserted. By inserting the stop insertion portion 59 into the latch metal 53 of the column 57, the horizontal member 63 can be attached to the columns 57 and 58 in a horizontal state as shown in FIG. Then, as shown in FIG. 11, the second brace member 65 is rotated by rotating the second brace member 65 whose upper end is rotatably attached to the brace member attaching portion 70 of the second upper connection fitting 62. When the second lower connection fitting 67 connected to the lower end of 65 is to be attached and fixed to the latch 54, the upper end of the second bracing member 65 (the tip of the crushing portion 68 of the second bracing member 68) ), The latching piece 72 is pressed, and the latching piece 72 rotates around the pin 73 as a fulcrum. As a result, as shown in FIG. 12, the latching piece 72 is pressed against the latching metal 55 from the outside, and the flange 71 provided at the front part of the latching piece 72 is positioned below the latching metal 55.

Here, the first and second lower connection fittings 66 and 67 for fixing the lower end portions of the first and second bracing members 64 and 65 to the latch fittings 56 and 54 provided on the columns 58 and 57, respectively. Can have the same configuration as the first and second lower connection fittings 29 and 30 of the first embodiment. For this reason, the same code | symbol is attached | subjected to the same structural member as the 1st, 2nd lower side connection metal fittings 29 and 30, and detailed description is abbreviate | omitted.

Then, the effect | action of the temporary handrail 52 for temporary scaffolds which concerns on the 2nd Embodiment of this invention is demonstrated.
As shown in FIG. 14, the first and second bracing members 64 and 65 are rotatably attached to the first and second upper connection fittings 61 and 62 fixed to both sides of the horizontal member 63. Therefore, the first footing member for temporary scaffolding 52 can be folded by rotating the first and second bracing members 64 and 65 on both sides of the horizontal member 63, respectively. For this reason, storage of the handrail 52 for temporary scaffolding becomes easy.

Further, when using the temporary handrail 52 for the temporary scaffold, as shown in FIG. 15, the first and second bracing members 64 and 65 are rotated on both sides of the horizontal member 63, respectively. The two bracing members 64, 65 can be opened. Thereby, the temporary handrail 52 for temporary scaffolding can be moved upward by grasping and lifting the first and second bracing members 64 and 65 in the opened state.

And as shown in FIG. 11, the 2nd latching insertion part of the 2nd upper side connection metal fitting 62 is made by standing up the 1st, 2nd bracing members 64 and 65 with respect to the horizontal member 63. As shown in FIG. 60 can be inserted into the latch 55 of the support column 58, and the first latch insertion portion 59 of the first upper connection bracket 61 can be inserted into the latch 53 of the column 57. Thereby, the horizontal member 63 can be attached to the support | pillars 57 and 58 in a horizontal state. Next, as shown in FIG. 12, the second lower connection fitting 67 attached and fixed to the second bracing member 65 provided with the upper end portion of the second upper connection fitting 62 will be attached to the latch fitting 54. When the second bracing member 65 is rotated, the hooking piece 72 provided on the second upper coupling fitting 62 is pressed by the upper end portion of the second bracing member 65 and pivoted with the pin 73 as a fulcrum. Thus, the front collar portion 71 is positioned below the latch 55. On the other hand, when the first bracing member 64 having the upper end portion provided on the first upper connection fitting 61 is rotated so as to be engaged with the engagement fitting 56, the engagement piece provided on the first upper connection fitting 61 is provided. 72 is pressed by the upper end portion of the first bracing member 64 and rotates around the pin 73 as a fulcrum, so that the front collar portion 71 is positioned below the latch metal 53.

As a result, even if the first and second latch insertion portions 59 and 60 inserted into the latch fittings 53 and 55 are about to move upward, the flange portion 71 of the latch piece 72 is connected to the latch fittings 53 and 55. Since it is latched by a lower end part, the upward movement of the 1st and 2nd latching insertion parts 59 and 60 is prevented. As a result, after the horizontal member 63 is attached to the support columns 57 and 58, the first and second bracing members 64 and 65 are rotated so that the first and second lower connection fittings 66 and 67 are attached to the support columns 58 and 57. At the time of attachment, it is possible to prevent the horizontal member 63 once hooked from being detached from the support columns 57 and 58, and it is possible to efficiently attach the temporary scaffolding advance handrail 52 to the support columns 57 and 58. Furthermore, when the temporary handrail 52 for temporary scaffolding is attached to the columns 57 and 58, the horizontal member 63 can be stably fixed to the columns 57 and 58.

On the other hand, when the horizontal member 63 is removed from the support columns 57 and 58, the first and second bracing members 64 are released after the first and second lower connection fittings 66 and 67 are fixed to the latch fittings 56 and 54. , 65 is rotated and detached from the latch fittings 56, 54, the pressing state of the latch piece 72 by the first and second bracing members 64, 65 is released, and as shown in FIG. The collar 71 located under the metal fittings 53 and 55 is detached from the bottom of the metal fittings 53 and 55, and the first and second hook insertion portions 59 and 60 are pulled out from the metal fittings 53 and 55. be able to. As a result, the first and second bracing members 64 and 65 are detached from the latch members 56 and 54, and the first and second latch insertion portions 59 and 60 are detached from the latch members 53 and 55. It can be performed as a series of continuous operations, and the temporary handrail 52 for the temporary scaffolding 52 can be efficiently removed from the columns 57 and 58.
The operation of the first and second lower connecting fittings 66 and 76 for attaching the first and second bracing members 64 and 65 to the latching fittings 56 and 54, respectively, is the same as that of the first and second bracing members 24, Since the operation of the first and second lower connection fittings 29 and 30 for attaching the bracket 25 to the latching fittings 13 and 14 is the same, the description thereof is omitted.

As described above, the present invention has been described with reference to the embodiment. However, the present invention is not limited to the configuration described in the above-described embodiment, and the matters described in the scope of claims. Other embodiments and modifications conceivable within the scope are also included.

10: Leading handrail for temporary scaffolding 11, 11, 13, 14: Latch bracket, 15, 16: Support column, 17: First latch insertion portion, 18: Second latch insertion portion, 19: Horizontal Member, 19a: bent portion, 20: first mounting bracket, 21: second mounting bracket, 22: bolt, 23: nut, 24: first bracing member, 25: second bracing member, 26: pin 27: hook part, 28: latching piece, 29: first lower connection fitting, 30: second lower connection fitting, 31: tread for temporary scaffolding, 32, 33: attachment piece, 34: crushing Part, 35: second bracing member mounting part, 36: first through hole, 37: second through hole, 38: opening part, 39: crushing part, 40, 41: U-shaped bent part, 42 : Outer plate part, 43: wedge part, 44: stopper piece, 45: retaining part, 46: U-shaped groove, 47: first pin , 48: latching claw, 49: second pin, 50: first through hole, 51: second through hole, 52: preceding handrail for temporary scaffold, 53, 54, 55, 56: latch metal 57, 58: support column, 59: first latch insertion portion, 60: second latch insertion portion, 61: first upper connection fitting, 62: second upper connection fitting, 63: horizontal member, 64: 1st bracing member, 65: 2nd bracing member, 66: 1st lower side connection metal fitting, 67: 2nd lower side connection metal fitting, 68: Crushing part, 69: Bolt, 70: 2nd Bracing member mounting part, 71: collar part, 72: hook piece, 73: pin, 74: nut, 75: through hole

Claims (5)

A temporary handrail for a temporary scaffold that also serves as a brace that is attached to a strut that is provided with a latching bracket having a U-shaped cross section at a predetermined interval and that is opposed to the column.
A horizontal member provided on both sides with first and second latching insertion portions, the first side of which is inserted into the latching bracket of the opposing strut from above;
First and second mounting brackets respectively fixed to the base sides of the first and second latching insertion portions;
First and second bracing members, the upper ends of which are pivotally attached to the first and second mounting brackets via pins or bolts, respectively;
The latch is pressed from the outside by the upper end of the first and second bracing members, which are pivotably provided above the first and second mounting brackets and rotated. A latching piece with a collar located under the bracket,
First and second lower connection fittings that are respectively connected to lower ends of the first and second bracing members and are attached and fixed to the latch fittings provided at positions below the opposing struts. has,
The horizontal member is made of a pipe material, and the first and second hooking insertion portions are fitted into the hooking metal fittings at the front side of bent portions in which both sides of the horizontal member are bent 90 degrees downward respectively. temporary scaffold preceding handrail characterized that you have been formed by crushing in width. A temporary handrail for a temporary scaffold that also serves as a brace that is attached to a strut that is provided with a latching bracket having a U-shaped cross section at a predetermined interval and that is opposed to the column.
A horizontal member provided on both sides with first and second latching insertion portions, the first side of which is inserted into the latching bracket of the opposing strut from above;
First and second mounting brackets respectively fixed to the base sides of the first and second latching insertion portions;
First and second bracing members, the upper ends of which are pivotally attached to the first and second mounting brackets via pins or bolts, respectively;
The latch is pressed from the outside by the upper end of the first and second bracing members, which are pivotably provided above the first and second mounting brackets and rotated. A latching piece with a collar located under the bracket,
First and second lower connection fittings that are respectively connected to lower ends of the first and second bracing members and are attached and fixed to the latch fittings provided at positions below the opposing struts. has,
The first and second mounting brackets have a U-shape that is open downward when viewed from the side, and the upper portion is fixed in a state of sandwiching the first and second latch insertion portions from the front and rear, and the latch piece The upper ends of the first and second mounting brackets are pivotally mounted on the upper positions inside the first and second mounting brackets via mounting pins, and the lower portions of the first and second mounting brackets that are U-shaped are the first and second mounting brackets. first, for temporary scaffolding, it characterized that you have a second bracing member mounting portion prior railing was reduced width according to the thickness of the crushed portion of the first and second bracing members. A temporary handrail for a temporary scaffold that also serves as a brace that is attached to a strut that is provided with a latching bracket having a U-shaped cross section at a predetermined interval and that is opposed to the column.
A horizontal member fixed to the first and second upper coupling fittings, each having first and second latching insertion portions that are mounted on the latching brackets of the opposing struts from above;
First and second bracing members, each having an upper end attached to the first and second upper coupling fittings;
First and second lower connection fittings that are respectively connected to lower ends of the first and second bracing members and are attached and fixed to the latch fittings provided at positions below the opposing struts. Have
The first and second upper connecting fittings are inserted into the latch fitting from above by cutting from the lower side in an inverted V shape or inverted U shape in a side view. A stop insertion portion and first and second bracing member mounting portions to which the first and second bracing members are rotatably attached via pins or bolts;
Moreover, the upper and lower end portions of the first and second bracing members are pressed against the hook metal from the outside, and the hook pieces having the flanges located under the hook metal are the first and second hooks. It is provided at the upper position of the brace member mounting part so as to be rotatable ,
The first and second lower connecting fittings are formed by bending an iron plate into a U shape when viewed from above, and an intermediate portion is provided with an opening into which the latching fitting is fitted, and the hook is attached to the opening. In the state where the fastener is inserted, it is fixed to the latch by a stopper piece having a wedge portion mounted between the upper and lower U-shaped bent portions and the outer plate portion of the latch,
The stopper piece is U-shaped, the wedge portion is formed on one side, and a retaining portion is formed on the other side, and the first and second lower connection fittings are fitted into U-shaped grooves of the stopper piece. a first pin, when removing the stopper from the locking bracket, the retaining portion of the hooking pawl is caught second pin is provided temporary scaffold preceding handrail, wherein Rukoto. The preceding handrail for a temporary scaffold according to claim 3 , wherein the first and second upper connection fittings are flat with a width in which the first and second hook insertion portions are fitted into the hook fittings. The first and second bracing member mounting portions are formed by bending the one piece bent into the U-shape and further forming the first and second pipe members. A preceding handrail for a temporary scaffold characterized in that the width is reduced in accordance with the thickness of the crushed portion of the bracing member. A temporary handrail for a temporary scaffold that also serves as a brace that is attached to a strut that is provided with a latching bracket having a U-shaped cross section at a predetermined interval and that is opposed to the column.
A horizontal member provided on both sides with first and second latching insertion portions, the first side of which is inserted into the latching bracket of the opposing strut from above;
First and second mounting brackets respectively fixed to the base sides of the first and second latching insertion portions;
First and second bracing members, the upper ends of which are pivotally attached to the first and second mounting brackets via pins or bolts, respectively;
The latch is pressed from the outside by the upper end of the first and second bracing members, which are pivotably provided above the first and second mounting brackets and rotated. A latching piece with a collar located under the bracket,
First and second lower connection fittings that are respectively connected to lower ends of the first and second bracing members and are attached and fixed to the latch fittings provided at positions below the opposing struts. has,
The first and second lower connecting fittings are formed by bending an iron plate into a U shape when viewed from above, and an intermediate portion is provided with an opening into which the latching fitting is fitted, and the hook is attached to the opening. In the state where the fastener is inserted, it is fixed to the latch by a stopper piece having a wedge portion mounted between the upper and lower U-shaped bent portions and the outer plate portion of the latch,
The stopper piece is U-shaped, the wedge portion is formed on one side, and a retaining portion is formed on the other side, and the first and second lower connection fittings are fitted into U-shaped grooves of the stopper piece. a first pin, when removing the stopper from the locking bracket, the retaining portion of the hooking pawl is caught second pin is provided temporary scaffold preceding handrail, wherein Rukoto.

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