JP5531342B2 - Safety handrail - Google Patents

Description

  The present invention relates to a safety handrail to be attached as a preliminary temporary handrail of a newly installed upper stage side scaffolding plate from an existing lower stage side scaffolding plate when assembling a frame scaffold in a multistage shape at a construction work site. The present invention relates to a safety handrail provided with a baseboard with a gap closing plate.

  When working on high places on the scaffolding board, there is a risk of accidentally dropping the bolts, nuts, various tools, etc., which were held by the operator, leading to an accident. A skirting board is installed on the top. On the other hand, when a scaffolding board and a scaffolding board are used and the scaffolding board is bridged between both lateral members of the opposing scaffolding buildingframe, one side end of the spanning scaffolding board and both scaffolding A gap is formed between the vertical frame side of the building frame (more precisely, a line connecting the vertical columns facing each other of the scaffolding frames for both scaffolds), specifically, for example, using a building frame with a span of 914 mm, When a 500 mm wide scaffolding plate and a 240 mm wide scaffolding plate are bridged in parallel between the two side members of a pair of opposing building frames, and the two scaffolding plates are brought into contact with each other and pulled toward one longitudinal member side, A gap of about 130 mm is formed between the material side and the scaffold board. If there is a gap between the scaffolding board and the vertical frame side of the building frame in this way, there is a risk that the operator may step on the foot and it is very dangerous. What is connected is a baseboard with a gap closing plate.

  As a conventional safety handrail to which a skirting board with a gap closing plate as described above is attached, specific known documents such as patent gazettes cannot be cited, but the conventional one is a predetermined height position of the handrail body. A skirting board is attached to the lower end of the skirting board, and a gap closing plate is integrally connected to the skirting board at a right angle.

  In the conventional safety handrail equipped with a baseboard with a gap closing plate, the baseboard is attached at a predetermined height position of the handrail main body as described above, and the gap closing plate is integrally integrated at a right angle with the lower end portion of the baseboard. Therefore, there is a problem that such safety handrails are bulky and easily collapse when stacked in a plurality of stages during transportation and storage.

  In view of the above circumstances, the present invention provides a safety handrail provided with a baseboard with a gap closing plate that reduces the bulkiness when stacking safety handrails, can be stably stacked, and is less likely to collapse. The purpose is to provide.

Means for solving the above-described problems will be described with reference numerals in the embodiments described later. The invention according to claim 1 is configured such that the pair of scaffolding frames 3 of the opposing scaffolds 2, 2 are arranged horizontally. In a safety handrail attached to a frame scaffold that is assembled in a multi-stage manner while spanning the scaffolding plate 4, the gap S between one end of the spanning scaffolding plate 4 and the vertical member 1 side of the building frame 3 is blocked. Thus, the other end portion of the gap closing plate 5 on which one end portion is placed on the scaffold plate 4 is hinged to the skirting board 6, and this skirting board 6 is attached to a predetermined height position of the handrail body 7. And a safety handrail provided with locking means 8 for locking the gap closing plate 5 in the folded position with respect to the skirting board 6. The locking means 8 includes a lock pin 9 and a spring 10. The pin 9 is pivotally supported through the end of the skirting board 6 and attached to the outer side of the skirting board 6 by a spring 10. The support shaft portion 9a, the operation shaft portion 9b extending in parallel from the tip end portion of the support shaft portion 9a along the inner surface of the skirting board 6, and the support shaft portion 9a inward from the tip end portion of the operation shaft portion 9b. A pin-shaped member 21 having a locking shaft portion 9c extending in parallel and having a pin hole 21 into which the locking shaft portion 9c is engaged in the end portion of the skirting board 6 at the end portion of the skirting board 6 is provided. 5, a pin hole 22 into which the locking shaft portion 9 c is engaged when the locking shaft portion 9 c is in the end portion of the folded gap closing plate 5, and the locking shaft portion 9 c is the gap closing plate 5. A pin removal notch groove 23 is provided through which the support shaft portion 9a and the operation shaft portion 9b are inserted so that the lock pin 9 can be removed in a state where the gap closing plate 5 is in the folded position. Occasionally, the locking shaft 9c is locked from the pin hole 22 of the gap closing plate 5 to the pin hole 21 of the skirting board 6 positioned opposite to the pin hole 22 of the gap closing plate 5 to From this locked state, the gap closing plate 5 is tilted in a state where the operating shaft portion 9b is pulled against the spring 10 and the locking shaft portion 9c is out of the end of the gap closing plate 5. The lock pin 9 comes out of the notch groove 23 for removing the pin of the gap closing plate 5 and is unlocked.

The second aspect of the present invention relates to a scaffolding board that is installed on a safety handrail that is attached to a frame scaffolding that is assembled in a multistage manner while the scaffolding plate 4 is bridged between the horizontal members 2 and 2 of the pair of scaffolding frames 3 that face each other. Width of the other end of the gap closing plate 5 on which the one end is placed on the scaffolding plate 4 so as to close the gap S between the one end of 4 and the vertical member 1 side of the building frame 3 There is provided a lock means 8 which is attached to the tree 6 and attached to a predetermined height position of the handrail main body 7 and locks the gap closing plate 5 in a folded position where it is folded with respect to the width board 6. The lock means 8 includes a lock pin 39 and a spring 40, and the lock pin 39 is pivotally supported through the end of the skirting board 6, and the spring 40 is moved outwardly of the skirting board 6. It consists of a shaft body 41 biased in the direction, and the gap closing plate 5 is folded at the tip of the shaft body 41. A rectangular plate-shaped lock fitting 43 for locking to a position is provided to be rotatable around the axis, and the shaft body 41 can be inserted into the end of the gap closing plate 5 and corresponds to the lock fitting 43. A rectangular opening 44 through which the lock fitting 43 can be inserted is provided, and the lock fitting 43 is inserted into the lock opening 44 of the baseboard 6 when the gap closing plate 5 is rotated to the folding position. Then, the gap closing plate 5 is locked by rotating the lock fitting 43 so as to be orthogonal to the lock opening 44, and the lock fitting 43 is rotated so as to be parallel to the lock opening 44. It is characterized in that it is unlocked by being extracted from.

  The effect of the invention by the above solution will be described with reference numerals of the embodiments described later. According to the invention according to claim 1, the gap closing plate 5 attached to the handrail body 7 of the safety handrail T is provided. The attached baseboard 6 is configured such that the gap closing plate 5 is foldable with respect to the baseboard 6 and is locked at the folding position by the locking means 8, so that the safety handrails T are stacked in a plurality of stages. Is not bulky, can be stacked stably, is not likely to collapse, and is extremely effective for storing and transporting the safety handrail T.

Further, according to the present invention, when the gap closing plate 5 is in the folded position , the locking means 8 has a width at which the locking shaft portion 9c of the lock pin 9 is positioned opposite to the pin hole 22 of the gap closing plate 5. The gap closing plate 5 is locked by being locked in the pin hole 21 of the tree 6, and the operation shaft portion 9 b is pulled against the spring 10 from such a locked state, and the locking shaft portion 9 c is pulled against the gap closing plate 5. By tilting the gap closing plate 5 in a state where it is out of the end portion, the lock pin 9 comes out of the pin extraction notch groove 23 of the gap closing plate 5 and is unlocked. By the operation, the gap closing plate 5 can be locked at the folding position and can be unlocked.

According to the second aspect of the present invention, as in the first aspect, the baseboard 6 with the gap closing plate 5 attached to the handrail main body 7 of the safety handrail T has the gap closing board 5 as the baseboard 6. The safety handrail T can be stacked in a stable manner without being bulky even when stacked in a plurality of stages. The lock means 8 made up of the lock pin 39 and the coil spring 40 is easy to manufacture with a simple structure and a small number of parts. And the operation becomes easy.

(a) is a front view of the safety handrail according to the present invention, and (b) is a side view. It is the perspective view which looked at the use condition of the safety handrail same as the above from the inner side of the frame scaffold. It is the perspective view which looked at the same safety handrail from the outer side of a skirting board. (a-1) is an enlarged view of the part indicated by the arrow X in (a) of FIG. 1, (a-2) is a plan view of the part, (b-1) is indicated by the arrow Y in (a) of FIG. The enlarged view of the part shown, (b-2) is the top view of the part. Although it is a ZZ line expanded sectional view of Drawing 1 (a), a crevice closing board is in a folding position. (a) is an enlarged view of a portion indicated by an arrow O in (a) of FIG. 1, (b) is a plan view, and (c) is an enlarged sectional view taken along line VV in (b) of FIG. (a) is a perspective view of a state in which the gap closing plate is locked in the folding position, (b) is a state in which the locking shaft portion is in a state in which the lock pin starts to be pulled out from the pin hole of the gap closing plate in the folding position. It is a perspective view of the state which is still in the edge part of a gap closing board. It is a perspective view of the state where the locking shaft part has come out of the end of the gap closing plate. It is a perspective view of the state where the lock pin is released from the notch groove for pin removal of the gap closing plate and unlocked. It is a perspective view of the state in which the latching shaft part of the lock pin was engaged in the pin hole of the edge part of a base board. (a) is a front view of one safety handrail with the gap closing plate in the folded position, (b) is a side view, and (c) is an enlarged view of the part indicated by arrow Q in (a). Figure (d) is a right side view of (c). (a) is a front view of a state in which two safety handrails in a state where the gap closing plate is in the folded position, and (b) is a right side view thereof. (a) is a front view of a state in which three safety handrails in a state where the gap closing plate is in the folding position are stacked, and (b) is a right side view thereof. (a) is a front view of a state in which four safety handrails in a state in which the gap closing plate is in the folded position, and (b) is a right side view thereof. FIG. 14 is an enlarged side view showing an overlapping state of gap closing plates and baseboards when three safety handrails are stacked as shown in FIG. 13. It is explanatory drawing which shows other embodiment of a locking means.

  A preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 1 (a) is a front view of a safety handrail T according to the present invention attached to a frame scaffold, and FIG. 2 is a side view, and FIG. 2 is a perspective view of the use state of the safety handrail T as viewed from the inside of the frame scaffold. Although only a part of the frame scaffold is shown in FIG. 2, a building frame 3 composed of a pair of vertical members 1, 1 on both sides and a horizontal member 2 connecting both vertical members 1, 1 is arranged opposite to each other at regular intervals. The scaffolding plate 4 is bridged between the opposite horizontal members 2 and 2 of the two building frames 3 and 3, and a brace (not shown) is bridged in an X shape between the vertical members 1 and 1 in a multi-stage shape. Assembled. The safety handrail T is attached as a temporary handrail of the upper stage scaffolding board newly provided from the existing lower stage scaffolding board when assembling the frame scaffolding, and includes the baseboard 6 with the gap closing board 5. . In FIG. 1, only the scaffold plate 4 of the framework scaffold is shown by virtual lines.

  As shown in FIG. 1, the safety handrail T attached to the frame scaffold is formed in a substantially inverted U-shape with the left and right vertical frames 11, 11 and the upper horizontal frame 12, and the lower horizontal frame 13 and the horizontal middle frame. 14, a handrail main body 7 in which a vertical middle rail 15 is interposed between the upper horizontal frame 12 and each vertical member 1, and a diagonal member 16 is interposed between the upper horizontal frame 12 and each vertical member 1, and a predetermined rail of the handrail main body 7. A skirting board 6 with a gap closing plate 5 attached at a height position, and attachment means 17 for detachably attaching the handrail main body 7 to the opposing vertical members 1 and 1 of the two building frames 3 and 3, respectively. Between the gap closing plate 5 and the skirting board 6, a locking means 8 is provided for locking the gap closing board 5 with respect to the skirting board 6 in the folding position.

  As can be seen from FIGS. 1 and 2, the gap closing plate 5 is placed on the scaffold plate so as to close the gap S between one end of the spanned scaffolding plate 4 and the vertical member 1 side of the building frame 3. The other end of the gap closing plate 5 is hinged to the skirting board 6 by a plurality of hinges 18, and the skirting board 6 is attached to the required height position of the handrail body 7. Between the skirting board 6 and the gap closing plate 5, a locking means 8 is provided for fixing the gap closing plate 5 to the skirting board 6 in the folded position.

  The gap closing plate 5 and the skirting board 6 are each formed of a metal plate such as a steel plate, and both side edge portions of the gap closing plate 5 are folded outward to form folded overlapping edges 5a and 5a ( 3), and both end portions of the skirting board 6 are also folded outward to form folded overlapping edges 6a and 6a (see FIG. 3). In order to attach the skirting board 6 to the handrail body 7, as shown in FIGS. 3 and 4, the outer surface side end of the skirting board 6 is fixed to a mounting bracket 19 fixed to a predetermined position of the vertical frame 11 by a rivet R. The intermediate portion of the skirting board 6 is fixed with rivets R to both end portions of the mounting bracket 20 having a hat-shaped cross section fitted to the vertical intermediate rail 15.

  By attaching the skirting board 6 to the predetermined height position of the handrail main body 7 as described above, the gap closing plate 5 hinged to the lower end of the skirting board 6 by the hinge 18 is, as shown in FIG. It is rotatable between a folded position where it is erected and folded with respect to the skirting board 6 and a hanging open position that hangs downward.

  Next, the locking means 8 for fixing the gap closing plate 5 to the skirting board 6 in the folded position will be described. The locking means 8 includes a lock pin 9 and a coil spring 10 as shown in FIGS. Consists of. The lock pin 9 is pivotally supported through the end portion of the skirting board 6 and the mounting bracket 19, and is urged toward the outer side of the skirting board 6 by the coil spring 10, and the distal end of the supporting shaft part 9 a An operating shaft portion 9b that extends in parallel along the inner surface of the skirting board 6, and a locking shaft portion 9c that is bent inward from the distal end portion of the operating shaft portion 9b and extends in parallel with the support shaft portion 9a. A pin hole 21 into which an engaging shaft portion 9c is engaged in the end of the skirting board 6 is provided in the end of the skirting board 6 (see FIGS. 9 and 10), and a gap closing plate 5 is provided with a pin hole 22 into which the locking shaft portion 9c is engaged when the locking shaft portion 9c is in the end portion of the gap closing plate 5 folded as shown in FIG. The support shaft portion 9a and the operation shaft portion 9b are inserted into the lock pin 9c in a state where it protrudes outside the end portion of the gap closing plate 5 folded as shown in FIG. And a substantially U-shaped notch groove 23 for removing the pin, and when the gap closing plate 5 is in the folded position, the locking shaft portion 9c is inserted from the pin hole 22 of the gap closing plate 5 to the pin. By locking in the pin hole 21 of the skirting board 6 provided at a position facing the hole 22, the gap closing plate 5 is locked as shown in FIG. 7 (a), and from this locked state, While the operating shaft portion 21b is pulled against the coil spring 10 as shown in (b), the gap closing plate is moved out of the end portion of the gap closing plate 5 as shown in FIG. 9, the lock pin 9 comes out of the U-shaped pin extraction notch groove 23 of the gap closing plate 5 and is unlocked.

  FIG. 7A shows a state in which the gap closing plate 5 is locked by the locking means 8 at the folding position where the gap closing plate 5 is folded with respect to the skirting board 6. At this time, the operation shaft portion 9 b of the lock pin 9 is in close contact with the outer surface of the gap closing plate 5 by the coil spring 10 that urges the support shaft portion 9 a toward the outer side of the skirting board 6. Then, from the state shown in (a), the operation shaft portion 9b of the lock pin 9 is pulled toward the front side, and the locking shaft portion 9c is extracted from the pinholes 22 and 21 of the gap closing plate 5 and the baseboard 6, As shown in FIG. 8B, while turning the locking shaft portion 9c around the support shaft portion 9a, the locking shaft portion 9c is moved out of the end of the gap closing plate 5 as shown in FIG. However, when the gap closing plate 5 is opened and rotated around the hinge 18 as shown in FIG. 9 from this state, the lock pin 9 comes out of the U-shaped pin extraction notch groove 23 of the gap closing plate 5 during the rotation. The gap closing plate 5 is unlocked.

  FIG. 9 shows a state in which the gap closing plate 5 is placed and supported on the scaffolding plate (not shown) while the lock is released. At this time, the locking shaft portion 9 c of the lock pin 9 is supported by the vertical frame 1 of the handrail body 7. Accordingly, from the state shown in FIG. 9, the locking shaft portion 9c is pivoted about the support shaft portion 9a while pulling the operation shaft portion 9b of the lock pin 9 against the urging force of the coil spring 10, and the width is obtained. When engaged with the pin hole 21 of the tree 6, the operation shaft portion 9 b of the lock pin 9 is brought into close contact with the inner side surface of the skirting board 6, and the state shown in FIG. 10 is obtained. When the gap closing plate 5 is folded and locked from the state shown in FIG. 10, the above operation may be reversed.

  According to the lock means 8 as described above, the gap closing plate 5 can be easily locked in the folding position and unlocked by the pulling operation and the rotation operation of the lock pin 9 as described above.

  As shown in FIG. 1, the attachment means 17 for detachably attaching the handrail main body 7 to the opposing vertical members 1 and 1 of the two building frames 3 and 3 is provided between the vertical frames 11 of the handrail main body 7. The hook 24 for positioning that is attached to the horizontal frame 2 of the building frame 3 and the lower end of each vertical frame 11 of the handrail body 7, and the handrail body 7 is attached to the building frame 3. The upper side fixing bracket 25 is fixed to the upper side of the vertical member 1, and the lower side fixing bracket 26 is fixed to the lower side of the vertical member 1 of the upper building frame 3.

  As shown in FIGS. 4B-1 and 4B-2, the hook 24 of the mounting means 17 is provided on the lower side of the distal end portion of the mounting arm 24a protruding from the mounting frame 27 having an arcuate cross section fixed to the vertical frame 11. In addition, a hook portion 24b that fits and engages the horizontal member 2 of the building frame 3 from above is provided, and a safety handrail T is provided on the upper end of the attachment arm 24a when the safety handrail T is attached or removed. A hook portion 24c that is fitted and locked to the horizontal member 2 of the building frame 3 in the reverse state is formed.

  The upper side fixing bracket 25 and the lower side fixing bracket 26 have the same structure, and each of the fixing brackets 25 and 26 has a vertical frame 11 of the handrail main body 7 as shown in FIGS. 6 (a) and 6 (b). And a longitudinal member engaging portion 29 that is detachably engaged with the longitudinal member 1 of the building frame 3 at one end, and the longitudinal member engaging portion 29 is engaged with the longitudinal member 1. The pivot member 30 pivots on the attachment member 28 so as to be rotatable between the fixed position to be engaged and the storage position in which the vertical member engaging portion 29 is detached from the vertical member 1 and folded and stored along the vertical frame 11 of the handrail body 7. And a locking means 32 for locking the rotating member 31 to a fixed position and a storage position, and a fixing screw 46 is attached to the distal end portion of the vertical member engaging portion 29. It is. The other end of the rotating member 31, that is, the end opposite to the vertical member engaging portion 29 is engaged with the vertical frame 11 of the handrail body 7 at the fixed position, and detached from the vertical frame 11 at the storage position. A vertical frame engaging portion 33 is provided.

  The locking means 32 is provided with an engagement projection 34 on one side of the sliding contact surface portion of the attachment member 28 and the rotating member 31 so as to be elastically contacted by the spring 35 to the other sliding contact surface portion side, and the other sliding contact surface portion. A lock for a fixed position where the engaging protrusion 34 engages and locks the rotating member 31 in the fixed position and the storage position when the rotating member 31 rotates to the fixed position and the storage position on the contact surface side. The hole 36A and the storage position lock hole 36B are provided. As shown in FIG. 6 (c), the spring 35 of the locking means 32 is composed of a first spring 37 and a second spring 38 each having a trapezoidal shape, and the first spring 37 is located in the second spring 38. The engaging projection 34 is mounted in a state of being fitted to the front end of the second spring 38 and protrudes to the outside through the mounting member 28, and its protruding end is provided on the rotating member 31. The fixed position lock hole 36 </ b> A or the storage position lock hole 36 </ b> B is engaged.

  In the use of the safety handrail T configured as described above, although not shown, a pair of building frames 3 and 3 are arranged to face each other, and a brace is placed between the facing vertical members 1 and 1 of both building frames 3 and 3. Is attached to both building frames 3 and 3, and then a scaffolding plate 4 is hooked between the opposite horizontal members 2 and 2 of both building frames 3 and 3. (See FIG. 2) and assemble the first stage scaffold. When attaching the safety handrail T, as shown in FIG. 11, the upper and lower fixing brackets 25, 26 of the attachment means 17 are both stored in the storage position where the rotating member 31 is folded along the vertical frame 11 of the handrail body 7. In the state of being set by the lock means 32 and locked by the locking means 32, the positioning hooks 24, 24 on both sides of the handrail main body 7 are hooked on the horizontal members 2 facing both the building frames 3, 3, and the handrail main body is again positioned. The gap closing plate 5 attached to the skirting board 6 fixed to 7 is folded and fixed to the folding position by the lock means 8.

  Thereafter, the rotating member 31 of each lower side fixing bracket 26 is rotated to the fixed position, and the vertical member engaging portion 29 on one end side is moved to the building frame 3 as shown in FIGS. 6 (a) and 6 (b). The fixing screw 46 is tightened to fix the engaging portion 29 to the vertical member 1, and the rotating member 31 is locked to the fixed position by the lock means 32 to fix each lower side. As shown in FIG. 2, the metal fitting 26 is fixed to the vertical member 1 of the first-stage scaffolding frame 3, so that the gap closing plate 5 locked in the folding position by the locking means 8 is unlocked. It is supported on the scaffold plate 4.

  Next, the second stage building frame 3 is added to the first stage scaffolding frame 3 on the first stage scaffolding plate 4, and the upper side of the safety handrail T that has not been fixed yet is fixed. The bracket 25 is fixed to the vertical member 1 of the second-stage building frame 3 in the same manner as the lower-side fixing bracket 26 described above, and the opposite vertical members 1, 1 of the second-stage both building frames 3 and 3 are opposed to each other. Hang braces between them. The assembly work of the second stage scaffold is performed on the scaffold plate 4 of the first stage scaffold, and this second stage scaffold is attached to the upper side of the vertical frame 1 of the building frame 3 by the lower side fixing bracket 26. Since the upper half of the safety handrail T is fixed and protrudes upward from the scaffold plate 4, the work can be performed safely and the gap closing plate 5 attached to the handrail body 7 of the safety handrail T is secured. The splint 6 can prevent various tools from falling.

  And in this 2nd stage scaffold, after spanning the scaffolding board 4 between the horizontal members 2 and 2 which both building frames 3 and 3 oppose, the safety handrail T was mentioned above on both building frames 3 and 3. Attach in the same way as the first stage scaffolding. Thereafter, the scaffolding is assembled in a multistage manner while the safety handrail T is installed by the same method as described above.

  11A is a front view of one safety handrail T in a state in which the gap closing plate 5 attached to the skirting board 6 is locked in the folding position, and FIG. 11B is a side view thereof. is there. 12 (a) is a front view showing a state where two safety handrails T are stacked in a state where the gap closing plate 5 is locked in the folding position, and FIG. 12 (b) is a side view thereof. Similarly, (a) is a front view of a state in which three safety handrails T in a state in which the gap closing plate 5 is locked at the folding position, and (b) is a side view thereof. FIG. 14 similarly shows a state in which four safety handrails T in a state in which the gap closing plate 5 is locked at the folding position are stacked, the fourth safety handrail T is the third safety handrail. FIG. 15 shows a front view and a side view in a state of being superimposed on the first safety handrail T on the opposite side of T, and FIG. 15 is a gap closing plate when three safety handrails T are stacked as shown in FIG. It is an enlarged side view which shows the overlapping state of 5 and the baseboard 6. FIG.

  As can be seen from FIGS. 12 to 15, the skirting board 6 with the gap closing plate 5 attached to the handrail body 7 of each safety handrail T can be folded with respect to the skirting board 6. However, since it is fixed at the folding position by the lock means 8, the safety handrail T does not become bulky even if stacked in a plurality of stages, can be stacked stably, and the load collapses. It is extremely effective for storage and transportation.

  FIG. 16 shows another embodiment of the locking means 8 for fixing the gap closing plate 5 to the folding position where the gap closing plate 5 is folded with respect to the skirting board 6. The locking means 8 shown in FIG. 16 is composed of a lock pin 39 and a coil spring 40, and the lock pin 39 is pivotally supported through the end of the skirting board 6 and the frame 42 fixed to the end, The shaft 41 is urged by the coil spring 40 toward the outer side of the skirting board 6, and the gap closing plate 5 is locked at the folding position where the gap closing plate 5 is folded with respect to the skirting board 6. A rectangular plate-shaped lock fitting 43 is provided to be rotatable around its axis, and a shaft body 41 can be inserted into the end of the gap closing plate 5 and is formed in a rectangle corresponding to the lock fitting 43. A lock opening 44 through which the lock metal fitting 43 can be inserted is provided, and the lock metal fitting 43 is inserted into the lock opening 44 of the skirting board 6 when the gap closing plate 5 is rotated to the folding position. Later, lock metal fitting 43 is locked The gap closing plate 5 can be locked by rotating it 90 ° so as to be orthogonal to the longitudinal direction of the opening 44, and the lock fitting 43 is rotated so as to be parallel to the longitudinal direction of the locking opening 44. The lock can be released by extracting from the portion 44.

  In FIG. 16, (a-1) indicates that the shaft body 41 of the lock pin 39 is penetrated and supported by the end portion (both end portions) of the skirting board 6 and the base frame 42 provided at the end portion, and at the base end portion. A side view of a state in which a coil spring 40 is interposed between the screwed nut 45 and the base frame 42 and a rectangular plate-shaped lock fitting 43 is rotatably attached to the distal end portion of the shaft body 41 penetrating the skirting board 6. (A-2) is a front view of the skirting board 6 viewed from the front end side of the shaft body 41, and (a-3) is a front view of the gap closing plate 5 provided with the lock opening 44. . (B-1) is a shaft that shows a state where the shaft body 41 of the lock pin 39 is pulled in the distal direction from the state shown in (a-1) and the lock fitting 43 is rotated 90 ° around its axis. FIG. 6 is a front view of a skirting board 6 viewed from the distal end side of a body 41.

  In (c-1) and (c-2), when the gap closing plate 5 is rotated to the folding position, the lock fitting 43 at the tip of the shaft body 41 is inserted into the lock opening 44 of the base board 6. Then, the lock metal fitting 43 is rotated by 90 ° so as to be orthogonal to the longitudinal direction of the lock opening 44 to show that the gap closing plate 5 is locked, and (c-3) is (c-2) ) Shows a state in which the lock is released by rotating the lock fitting 43 so as to be parallel to the longitudinal direction of the lock opening 44.

  According to the lock means 8 comprising the lock pin 39 and the coil spring 40 as shown in FIG. 16, there is an advantage that the structure is simple, the number of parts is reduced, the manufacture becomes easy, and the operation becomes easy.

T safety handrail 1 vertical member of scaffolding frame 2 horizontal member of scaffolding frame 3 scaffolding frame 4 scaffolding plate 5 gap closing plate 6 skirting board 7 handrail body 8 lock means 9 lock pin 9a support shaft 9b Operation shaft portion 9c Locking shaft portion 10 Spring 21 Pin hole 22 Pin hole 23 Notch groove for pin removal

Claims (2)

In the safety handrail attached to the frame scaffolding that is assembled in a multi-stage while spanning the scaffolding plate between the horizontal members of a pair of opposing scaffolding building frames, one side end of the spanned scaffolding plate and the vertical of the building frame The other end of the gap closing plate on which one side end is placed on the scaffolding plate is hinged to the baseboard so as to close the gap between the material side, and this baseboard is attached to the predetermined height of the handrail body. is attached to the position, a safety handrail formed by providing a locking would like the locking means folded collapsed position the gap closing plates to the baseboard,
The lock means includes a lock pin and a spring. The lock pin is pivotally supported through the end of the baseboard and is urged by the spring toward the outside of the baseboard, and the tip of the support shaft And a base shaft comprising an operation shaft portion extending in parallel along the inner surface of the baseboard from the portion and a locking shaft portion extending inward from the tip portion of the operation shaft portion in parallel with the support shaft portion. The end of the base plate is provided with a pin hole for engaging the locking shaft portion in the end portion of the skirting board, and the end portion of the gap closing plate is located in the end portion of the gap closing plate where the locking shaft portion is folded. A pin hole for engaging the locking shaft, and for pin removal that allows the support shaft and the operating shaft to be inserted and the locking pin to be extracted with the locking shaft protruding outside the end of the gap closing plate. A notch groove is provided, and when the gap closing plate is in the folded position, the locking shaft portion is locked from the pin hole of the gap closing plate to the pin hole of the base plate positioned opposite thereto. By locking the gap closing plate, from this locked state, by pulling the operating shaft against the spring and tilting the gap closing plate in the state where the locking shaft is out of the end of the gap closing plate, A safety handrail in which the lock pin comes out of the notch groove for removing the pin of the gap closing plate and is unlocked. In the safety handrail attached to the frame scaffolding that is assembled in a multi-stage while spanning the scaffolding plate between the horizontal members of a pair of opposing scaffolding building frames, one side end of the spanned scaffolding plate and the vertical of the building frame The other end of the gap closing plate on which one side end is placed on the scaffolding plate is hinged to the baseboard so as to close the gap between the material side, and this baseboard is attached to the predetermined height of the handrail body. A safety handrail provided with a locking means for locking in a folded position where the gap closing plate is folded with respect to the skirting board while being attached to the position,
The lock means includes a lock pin and a spring, and the lock pin includes a shaft body that is pivotally supported through the end of the skirting board and is urged by the spring in the outer direction of the skirting board. At the tip of the body, a rectangular plate-shaped lock fitting for locking the gap closing plate in the folding position is provided to be rotatable around the axis, and the shaft body can be inserted into the end of the gap closing plate. In addition, there is a rectangular shape corresponding to the lock metal fitting, and a lock opening through which the lock metal fitting can be inserted is provided. After inserting into the part, lock the gap closing plate by rotating the lock fitting so as to be orthogonal to the lock opening, and rotate the lock fitting parallel to the lock opening and pull out from the opening. Will unlock And it has safety handrail to become.

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