JP5202033B2 - Handrail for temporary scaffolding - Google Patents

Description

  The present invention relates to a handrail for a temporary scaffold, and can be used for a temporary scaffold assembled at various work sites such as a construction work site, a civil engineering work site, and a dismantling work site, for example. .

  Temporary scaffolds assembled at various work sites such as construction work sites, civil engineering work sites, and demolition work sites are required to be provided with handrails to ensure the safety of workers. The handrail shown in the following Patent Document 1 is provided with two connecting portions that are connected to the temporary scaffolding structural members constituting the temporary scaffolding at both ends in the length direction of the handrail main body, These connection parts have an insertion part by which a connection part is connected with the structural member for temporary scaffolds by inserting the structural member for temporary scaffolds.

  To describe the handrail of Patent Document 1 in more detail, each of the two connecting portions described above is coupled to the end portion in the length direction of the handrail body, and a base member in which the first notch portion is formed. The first notch is movably disposed on the base member so as to open and close, and the second notch is formed, and the first notch is moved freely with respect to the base member so as to close the first notch. And a floating member that forms the insertion portion in which the temporary scaffolding structural member is not allowed to escape by the missing portion and the second missing portion.

In this handrail, when the floating member is moved relative to the base member so as to close the first notch, the temporary scaffolding component cannot be escaped by the first notch and the second notch. Since the portion is formed, both the connection portions of the handrail formed including the base member and the floating member are connected in a locked state to the temporary scaffolding structural member. Moreover, since each of the floating members is loosely moved with respect to the base member so as to open the first notch portion, the locked state of each connecting portion with respect to the temporary scaffolding structural member is released. The connecting portion can be separated from the temporary scaffold component and the handrail can be detached from the temporary scaffold component.
JP2007-46382

  However, in the handrail of the above-mentioned patent document 1, the connecting portions that are connected in a locked state to the temporary scaffolding structural member by the idler member that floats with respect to the base member are at both ends in the length direction of the handrail body. In order to remove the handrail from the temporary scaffolding structural member, the operator spreads both hands so that both floating members are allowed to move simultaneously with the base member in the opposite direction to the above-mentioned locking state, Thereby, the operation | work which opens the 1st notch part of a base member must be performed simultaneously. According to this, it takes time to remove the handrail from the temporary scaffolding structural member, and when the length of the handrail is long, the looseness provided at both ends in the length direction of the handrail main body. Since it is difficult to operate the members at the same time, it is difficult to remove the handrail from the temporary scaffolding structural member.

  An object of the present invention is to provide a handrail for a temporary scaffold that can be easily detached from the structural member for the temporary scaffold.

  The handrail for a temporary scaffold according to the present invention is provided with two connecting portions that are connected to the constituent members for the temporary scaffolding constituting the temporary scaffolding at both ends in the length direction of the handrail main body. In the temporary scaffolding handrail, the temporary scaffolding handrail has an insertion part that is connected to the temporary scaffolding structural member by inserting the temporary scaffolding structural member. One connecting portion is coupled to the end of the handrail main body in the length direction, and has a base member formed with a first notch, and the base member so as to open and close the first notch. The second notch is formed so as to be freely movable, and the second notch is formed by the first notch and the second notch when moved with respect to the base member so as to close the first notch. The insertion part in which the component for temporary scaffolding has become unable to escape. And the other connecting portion is formed by a hook member in which the insertion portion is a locking recess for inserting and locking the temporary scaffolding component member. It is what.

  According to this temporary scaffolding handrail, of the two connecting portions provided at both ends in the length direction of the handrail main body, only one of the connecting portions is a base member in which the first notch portion is formed, The insertion part in which the second notch part is formed and the temporary scaffolding component member cannot be escaped by the first notch part and the second notch part when floating with respect to the base member so as to close the first notch part. And the other connecting portion is formed by a hook member in which the insertion portion is a locking recess for inserting and locking the temporary scaffolding structural member. When the handrail is removed from the temporary scaffold component, the floating member provided in one of the connecting portions is removed from the first notch portion before the locking recess of the hook member is detached from the temporary scaffold component. It can be moved with respect to the base member so that it can be opened. The one connecting portion formed including the base member and the floating member is detached from the temporary scaffold constituent member, and thereafter, the locking recess of the hook member is detached from the temporary scaffold constituent member. Thus, the handrail can be removed from the temporary scaffold component.

  For this reason, the operation of the floating member that is performed to remove the handrail according to the present invention from the temporary scaffolding component member only needs to be performed on one of the connecting portions, and therefore, the handrail can be easily removed, Even if the length of the handrail is longer than the length of both hands of the operator, the floating member that the operator must operate is provided only at one end in the length direction of the handrail body. Therefore, the handrail whose length is long can be easily removed from the temporary scaffolding structural member.

  In the above, the size and shape of the insertion part in the one connecting part formed by the first missing part and the second missing part when the idler member is idled with respect to the base member so as to close the first missing part, And the magnitude | size and shape of the insertion part in said other connection part formed of the latching recessed part of a hook member can be set arbitrarily.

  For example, the insertion portion in the one connecting portion formed by the first lack portion and the second lack portion when the floating member is moved relative to the base member so as to close the first lack portion is inserted into the insertion portion. In the other connecting portion, it is a missing circle shape or a non-missing circle shape having an inner and outer communication portion smaller than the diameter of the temporary scaffolding component member inserted into the portion (a circular shape without the inner and outer communication portions being a missing portion). The locking recess of the hook member is closed at the upper part, the lower part, and the outer part in the longitudinal direction of the handrail body, and the inner part in the longitudinal direction of the handrail body is opened to the outside. In addition, the size of the opening is a three-way closed locking recess that is larger than the diameter of the temporary scaffold component.

  According to this, the insertion portion in the one connection portion is a missing circle or a non-circular shape having an inner and outer communication portion smaller than the diameter of the temporary scaffolding component member inserted into the insertion portion, and the other Since the locking recess of the hook member in the connecting portion is a three-way closed locking recess that opens toward the outside only in the lengthwise inner side of the handrail body, the handrail is used as a temporary scaffolding structural member. After the attachment, the handrail cannot be detached from the temporary scaffold component unless the floating member is moved relative to the base member so as to open the first notch. That is, it is possible to prevent the handrail from being suddenly detached from the temporary scaffold component.

  Note that the “circle” in the above-described missing circle shape or non-missing circle shape may be a perfect circle, an ellipse, a polygonal circle such as a triangular circle, or any other irregular shape.

  Further, the lower portion for making the locking recess of the hook member closed in three directions may not have a linear length extending inward in the longitudinal direction of the handrail body. It may have a linear length extending inward in the length direction.

  According to the latter, even for temporary scaffolds in which the intervals between the temporary scaffolding components to which the two connecting portions provided at both ends in the length direction of the handrail main body are connected are different from each other, The handrail according to the present invention can be used in common by absorbing with the linear length of the side portion.

  Further, the base member or the hook member on which the floating member is disposed may be detachably coupled to the handrail main body by welding or the like, or the base member on which the floating member is disposed and the hook member may be combined. The handrail main body may be detachable.

  According to the latter, when a damaged thing occurs among the handrail main body, the base member on which the floating member is arranged, and the hook member, the damaged one can be replaced and is not damaged. The thing can be used as it is even after replacing the damaged one.

  In addition, by making the base member and the hook member on which the floating members are arranged detachable with respect to the handrail main body, the base member and the hook member can be changed to a handrail main body having a different thickness or length. It can also be used in common. That is, the handrail main body can be replaced with one having a different thickness, length, etc., and the base member and the hook member can be used as they are for the replaced handrail main body.

  Further, when the base member or the hook member on which the floating member is arranged as described above is detachable from the handrail main body, the first missing portion and the second portion are used as the base member on which the floating member is arranged. A plurality of inserts having different sizes of the insertion portion formed by the notch portions are prepared, and a plurality of hook members having different sizes of the insertion portions serving as locking recesses are prepared. It is preferable that the base member and the hook member on which the floating members are arranged can be replaced and attached to the handrail main body.

  According to this, even if the structural members for temporary scaffolds connected to the two connecting portions provided at both ends in the length direction of the handrail main body are changed to those having different diameters (thicknesses), these Each of the connecting portions can be connected to the temporary scaffold component, and the handrail according to the present invention has versatility with respect to the temporary scaffold component having a different diameter.

  Furthermore, the length of the handrail body may be constant, or the length of the handrail body may be adjustable.

  According to the latter, the handrail can be used in common for various temporary scaffolds having different intervals between the two temporary scaffold components over which the handrail is bridged, and the versatility of the handrail is improved. .

  In addition, the structure which can adjust the length of a handrail main body is arbitrary, For example, this structure may be made by connecting a plurality of pipe materials having different diameters in a slidable nested manner, and a plurality of links. By connecting the members to a rhombus or the like, the length of the handrail main body may be adjustable by these link members that can be deformed.

  In the present invention described above, the handrail main body may be formed by a single bar made of a pipe material or the like, or may be formed by a combination of a plurality of bars, and You may form by the combination of a dissimilar material like a rod.

  Further, the handrail according to the present invention may be one in which only the handrail is attached to the temporary scaffold, or may be attached to the temporary scaffold in combination with other members such as braces, and further, braces, etc. It may be combined with other members in advance to form one unit and attached to a temporary scaffold as part of this unit.

  Furthermore, the handrail according to the present invention can be used for a temporary scaffold assembled at various work sites. The temporary scaffold may be a temporary scaffold for a construction work site, for example, or a temporary work site for a civil engineering work site. It may be a scaffold or a temporary scaffold for a dismantling work site.

  According to the present invention, it is possible to easily remove the handrail from the temporary scaffolding structural member.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated based on drawing. FIG. 1 shows a temporary scaffold 1 for a construction work site to which a handrail 30 according to this embodiment is applied. The temporary scaffold 1 is supported by a base spindle 2 at its lower end, and the length of the handrail 30 is shown. While the building frames 3 arranged side by side in the vertical direction are connected by the cloth plate 4, by inserting and engaging the end of the brace 6 to the gravity lock pin 5 protruding from the building frame 3, It is also formed by connecting the building frames 3 arranged opposite to each other in the length direction of the handrail 30 by two braces 6 arranged in an X-shaped cross.

  Since the handrail 30 of the present embodiment is used to form a two-step handrail on the temporary scaffold 1, the stiffener 7 of the two building frames 3 facing each other in the length direction of the handrail 30 is used. A two-stage handrail is provided on the temporary scaffold 1 by connecting both ends of the upper and lower handrails 30 in the length direction. More specifically, each of the stiffeners 7 includes a substantially J-shaped stiffening member 7A in the vertical direction with the lower part being substantially horizontal, and between the stiffening member 7A and the main body of the building frame 3. Since the lower handrail 30 is formed in the longitudinal direction of the two building frames 3 facing each other in the length direction of the handrail 30 The upper handrail 30 is bridged between the lower portions of the stiffening member 7A, and the upper handrail 30 is bridged between the stiffening members 7B of the two building frames 3 facing each other in the length direction of the handrail 30. Passed. As a result, a handrail structure that is safe and effective is created in the temporary scaffold 1 by the two upper and lower handrails 30 and the two braces 6 arranged in an X-shaped cross.

  FIG. 2 is a front view showing the entire handrail 30. The handrail 30 includes a handrail main body 31 having a length in the left-right direction and a connection provided to one end portion in the length direction of the handrail main body 31 and connected to the stiffener 7 of the building frame 3. And a connecting portion 62 provided at the other end in the length direction of the handrail main body 31 and connected to the stiffener 7 of the building frame 3. The handrail main body 31 is formed of a single pipe member 33 whose both ends are crushed and become vertical flat portions 33A.

  Of the connecting portions 32 and 62 of the handrail 30, first, one connecting portion 32 will be described. As shown in FIG. 3, the connecting portion 32 includes a base member 35 coupled to the flat portion 33 </ b> A by a bolt and nut 34, and a first pin 36 with a head 36 </ b> A and the base member 35. The floating member 38 is mounted so as to be movable in the vertical plane by the second pin 37 with the head 37A. The base member 35 and the floating member 38 that are in a vertical posture with respect to the handrail main body 31 are formed of a thick plate material, and the upper end of the base member 35 is a bent portion 35A that is bent horizontally. The base member 35 is connected to the flat portion 33A with the bolt and nut 34 in a state where the bent portion 35A is locked to the upper side portion of the flat portion 33A, so that the base member 35 is centered on the bolt and nut 34. The rotation is stopped and attached to the handrail body 31.

  FIG. 4 is a front view of the base member 35, and FIG. 5 is a front view of the idler member 38. As shown in FIG. 4, the base member 35 is formed with bolt holes 39 through which the bolts of the bolts and nuts 34 are inserted, and the shaft portions 36B and 37B of the first and second pins 36 and 37 (FIG. 6). Also, pin holes 40 and 41 for inserting and fixing are also formed vertically. Further, the base member 35 is formed with a first cutout portion 42 that opens downward. The first cutout portion 42 has an upper semicircular portion 42A and a width that is the same as the diameter of the semicircular portion 42A. The upper and lower communication portions 42B have dimensions and reach the semicircular portion 42A from the lower side 35B of the base member 35 to communicate the semicircular portion 42A to the outside of the base member 35. The diameter of the upper semicircular portion 42A is slightly larger than the diameter of the stiffener 7 of the building frame 1 that is a temporary scaffold component to which the connecting portions 32 and 62 of the handrail 30 are connected.

  As shown in FIG. 5, a long hole 43 is formed in the floating member 38, and the long hole 43 is formed in the shaft portion 36 </ b> B of the first and second pins 36 and 37 as shown in FIGS. 6 and 7. , 37B are inserted into the guide slots 36A and 37A to prevent the pins 36 and 37 from coming off and locked. As shown in FIG. When 32 is connected to the stiffener 7 described above of the building frame 3 which is a constituent member of the temporary scaffold 1 of FIG. 1, in other words, when the posture of the floating member 38 becomes the posture shown in FIG. As shown in FIG. 5, the guide slot 43 has a first slot 43A extending in the vertical direction and a lower side obliquely from the lower end of the first slot 43A. And the second elongated hole 43 </ b> B extending outward in the length direction of the handrail 30. The guide long hole 43 has a protruding portion 44 that protrudes from the outside in the length direction of the handrail 30 to the inside of the guide long hole 43 at the connecting portion between the first long hole portion 43A and the second long hole portion 43B. While being formed, the first elongated hole portion 43 </ b> A is formed with a recessed portion 45 that is recessed from the guide elongated hole 43 inward in the longitudinal direction of the handrail 30.

  Further, at the lower part of the floating member 38, when the connecting part 32 is connected to the stiffener 7 of the building frame 3 as shown in FIG. An extension portion 46 is formed for closing the communication portion 42B of the first cutout portion 42 of the base member 35 from the inner side in the length direction of the handrail 30 by more than half, and the upper side of the extension portion 46 is connected to the floating member 38. The second notch 47 is formed. The second notch 47 is a curved concave part formed with the same radius of curvature as the semicircular part 42A of the first notch 42 of the base member 35. A protrusion 48 protruding outward in the length direction of the handrail 30 is provided.

  Further, the floating member 38 is provided with a finger hooking portion 49 that extends inward in the length direction of the handrail 30 and obliquely downward on the opposite side of the extension portion 46 in the length direction of the handrail 30. ing.

  In the above, the guide elongated hole 43 of the floating member 38 is slidable with respect to the shaft portions 36B and 37B of the first and second pins 36 and 37 fixed to the base member 35. When the turning force in the vertical direction is applied to the floating member 38 by the finger hung on the floating member 38, the floating member 38 is moved relative to the base member 35 by the guide action of the guide long hole 43 and the first and second pins 36 and 37. It moves freely in the vertical plane.

  FIG. 6 shows the shape of the connecting portion 32 before connecting the connecting portion 32 to the stiffener 7 of the building frame 3. At this time, the shaft portion 36B of the first pin 36 is inserted into and engaged with the recess 45 of the guide long hole 43, and the shaft portion 37B of the second pin 37 is connected to the second long hole portion 43B of the guide long hole 43. Insertion engagement is made near the end. Thereby, the loose member 38 is prevented from rotating in the vertical plane around the first pin 36 or the second pin 37, and maintains a fixed posture with respect to the base member 35. At this time, the extending portion 46 of the floating member 38 is located at a position disengaged from the communication portion 42B of the first notch 42 of the base member 35. Therefore, the idling member 38 opens the first notch 42. At this time, the protrusion 48 of the floating member 38 protrudes into the first cutout 42.

  Next, the other connection part 62 is demonstrated among the connection parts 32 and 62 of the handrail 30 shown in FIG. As shown in FIG. 8, the connecting portion 62 is formed by a hook member 65 made of a thick plate material joined to the flat portion 33 </ b> A of the pipe material 33 forming the handrail main body 31 by a bolt / nut 64. Has been. The upper end of the hook member 65 is a horizontally bent portion 65A, and the hook member 65 is fastened to the flat portion 33A with bolts and nuts while the bent portion 65A is locked to the upper side portion of the flat portion 33A. The hook member 65 is attached to the handrail main body 31 by being rotated by the bolts and nuts 64 as a result of being coupled at 64.

  The hook member 65 has a locking recess 66 for inserting and locking the stiffener 7 of the building frame 3, and the locking recess 66 includes an upper portion 66A, a lower portion 66B, The portion 66C on the outer side in the length direction of the handrail 30 is closed, and the portion 66D on the inner side in the length direction of the handrail 30 opens toward the outside, in other words, toward the inner side in the length direction of the handrail 30. The opening is formed in a portion 66 </ b> D on the inner side in the longitudinal direction of the handrail 30 and is slightly larger than the diameter of the stiffener 7.

  Further, the lower portion 66B is provided with a linear portion 66E extending inward in the length direction of the handrail 30. That is, the lower portion 66 </ b> B has a linear length extending inward in the length direction of the handrail 30.

  In FIG. 8, the upper portion 66A is formed by the hook member 65 itself, like the lower portion 66B and the lengthwise outer portion 66C of the handrail 30, but the upper portion 66A It may be formed by the sliding main body 31.

  When performing the work of bridging the handrail 30 between the stiffeners 7 of the building frame 3 facing each other of the temporary scaffold 1 shown in FIG. 1, first, the hook member 65 in the connecting portion 62 of the handrail 30. As shown in FIG. 8, the stiffener 7 of one building frame 3 is inserted into the locking recess 66 of the locking recess 66 from the opening of the portion 66 </ b> D in the longitudinal direction of the handrail 30 in the locking recess 66. Insert and lock. Next, as shown in FIG. 6, the floating member 38 in the connecting portion 32 of the handrail 30 is moved to a position where the first notch portion 42 of the base member 35 is not closed by the floating member 38. Then, the connecting portion 32 of the handrail 30 is dropped from above toward the stiffener 7 of the other building frame 3.

  As a result, an upward load is applied from the stiffener 7 to the protrusion 48 of the floating member 38 that protrudes into the first cutout 42 of the base member 35, so that the floating member 38 protrudes while slightly floating. Since the part 48 performs a floating movement that rotates inward in the longitudinal direction of the handrail 30 and the floating member 38 falls due to its own weight following this movement, the first member 48 has a first shape as shown in FIG. The shaft portion 36 of the pin 36 is inserted into and engaged with the upper end portion of the first long hole portion 43 </ b> A of the guide long hole 43, and the shaft portion 37 </ b> B of the second pin 37 is a lower portion of the hollow portion 45 in the guide long hole 43. Then, the protrusion 44 is inserted into and engaged with the protruding portion.

  The movement of the floating member 38 so as to move and fall in this way is that the first cutout portion 42 of the base member 35 is closed by the floating member 38, that is, the communication portion 42 </ b> B of the first cutout portion 42. As shown in FIG. 7, more than half of the left-right width dimension is closed by the extending portion 46 of the floating member 38. When more than half of the left-right width dimension of the communication portion 42B of the first cutout portion 42 is closed by the extending portion 46 of the floating member 38 in this way, the first cutout portion 42 of the base member 35 is connected to the connecting portion 32. And the second cutout portion 47 of the floating member 38 form an insertion portion 50 into which the stiffener 7 is inserted. The insertion portion 50 is formed of the stiffener 7 having a circular cross section. It is a substantially circular shape that corresponds to the cross-sectional shape, and is a partial circle that is partially cut off in the circumferential direction. The part lacking in the circumferential direction is the inner / outer communication part 50A, and the size of the inner / outer communication part 50A is a stiffening component serving as a temporary scaffolding component to which the handrail 30 is connected. It is smaller than the diameter of the material 7.

  For this reason, the insertion portion 50 formed by the loose movement of the floating member 38 is an insertion portion in which the stiffener 7 cannot be escaped, and is provided at one end of the handrail main body 31, The connecting portion 32 having the insertion portion 50 is connected to the stiffener 7 in a locked state.

  8 is provided at the other end of the handrail 30. As described above, the stiffener 7 is inserted and locked in the locking recess 66 of the hook member 65. The locking recess 66 serves as an insertion portion 52 for inserting and locking the stiffening material 7 to the connection portion 62 of the handrail 30.

  Further, when the floating member 38 disposed in one connecting portion 32 of the handrail 30 is moved to the position shown in FIG. 7, the floating member is formed when the above-described insertion portion 50 is formed in the connecting portion 32. 38 is prevented by the first pin 36 and the second pin 37 from moving relative to the base member 35, so that these pins 36 and 37 are used to stop the floating of the floating member 38 relative to the base member 35. Stop means 51 is configured.

  When removing the handrail 30 from the temporary scaffold 1 in FIG. 1, first, by placing a finger on the aforementioned finger-holding portion 49 of the floating member 38, the protruding portion 48 extends the length of the handrail 30 while lifting the entire floating member 38. The floating member 38 performs a floating movement that rotates outward in the vertical direction, whereby the floating member 38 returns to the position shown in FIG. 6, whereby the first notch 42 of the base member 35 is opened and inserted. Since the part 50 opens greatly, the connecting part 32 can be extracted from the stiffener 7 inserted in the insertion part 50.

  Thereafter, the stiffening material 7 inserted into the locking recess 66 is extracted from the locking recess 66 of the hook member 65, thereby forming the building frame 1 having the stiffening material 7 and the like. The entire handrail 30 can be removed from the temporary scaffold 1.

  According to the present embodiment described above, only one of the two connecting portions 32 and 62 provided at both ends in the length direction of the handrail 30 is the base member 35 and the base member. The stiffener 7 of the building frame 3 cannot be escaped by the floating member 38 that floats with respect to 35, and the other connecting portion 62 has the insertion portion 52 of the building frame 3. Since the stiffener 7 is formed by a hook member 65 that is a locking recess 66 for inserting and locking the stiffener 7, the floating operation of the floating member 38 for removing the handrail 30 from the temporary scaffold 1 is as follows: It suffices to perform only one connecting portion 32.

  Therefore, the removal operation of the handrail 30 can be easily performed, and even if the length of the handrail 30 is longer than the length in which the operator's hands are spread out, the looseness that must be operated by the operator Since the member 38 is provided only at one end in the length direction of the handrail 30, the handrail 30 having a long length can be easily detached from the temporary scaffold 1.

  Further, the insertion portion 50 in one of the connecting portions 32 formed by the first notch portion 42 and the second notch portion 47 when the idler member 38 moves relative to the base member 35 so as to close the first notch portion 42. Is a notch shape having an inner / outer communication portion 50A smaller than the diameter of the stiffener 7 of the building frame 3 inserted into the insertion portion 50, and the locking recess of the hook member 65 in the other connecting portion 62 66, the upper portion 66A, the lower portion 66B, and the portion 66C on the outer side in the length direction of the handrail 30 are closed, and the portion 66D on the inner side in the length direction of the handrail 30 opens to the outside. In addition, since the size of the opening is a three-way closed locking recess whose diameter is larger than the diameter of the stiffener 7 of the building frame 3, After connecting the connecting portions 32 and 62 to the stiffener 7 of the building frame 3 Unless by floating the floating member 38 relative to the base member 35, it is impossible to separate the handrail 30 from the stiffener 7 of Kenwaku 3. That is, it is possible to prevent the handrail 30 from suddenly coming off the temporary scaffold 1.

  Further, since the lower portion 66B of the locking recess 66 has a linear length extending inward in the length direction of the handrail 30, it is inserted and locked in the locking recess 66. As the stiffener of the building frame 3, there is the stiffener 7 'shown in FIG. 8 in addition to the stiffener 7 of FIG. 8, and the position of this stiffener 7' is two connecting portions. Even if the position of the stiffener connected to one of the connecting portions 32 of 32 and 62 is a reference, even if the stiffener is displaced in the length direction of the handrail 30 from the position of the stiffener 7 of FIG. The handrail 30 can be commonly used for the stiffeners 7 and 7 '.

  That is, even for temporary scaffolds in which the stiffeners of the building frame 3 to which the two connecting portions 32 and 62 provided at both ends in the length direction of the handrail 30 are connected are different from each other, the difference in the distance. Can be absorbed by the linear length of the lower portion 66B, and the handrail 30 can be used in common.

  The reason why there is a temporary scaffold in which the intervals between the stiffeners of the building frame 3 are different in this way is that the temporary scaffold assembled including the building frame 3 is designed with a metric-based dimension, This is because some are designed with dimensions based on inches.

  In addition, according to the present embodiment, the base member 35 on which the floating member 38 is disposed and the hook member 65 are detachably attached to the handrail body 31 by the bolts and nuts 34 and 64. 31, the base member 35 on which the floating member 38 is disposed, and the hook member 65, when a damaged one is generated, the damaged one can be replaced. It can be used as it is even after the damaged one is replaced.

  In addition, the base member 35 on which the floating member 38 is disposed and the hook member 65 can be commonly used for handrail bodies having different thicknesses, lengths, and the like. That is, even if the handrail main body is not damaged or the handrail main body is damaged, the handrail main body is replaced with a different one in thickness, length, etc. The base member 35 on which the idler member 38 is disposed and the hook member 65 can be used as they are.

  FIG. 9 shows an embodiment in which the connecting portion 32 provided at one end in the length direction of the handrail 30 can be connected to the temporary scaffolding component 7A having a large diameter. 10 shows an embodiment in which the connecting portion 32 provided at one end in the length direction of the handrail 30 can be connected to the temporary scaffolding structural member 7B having a small diameter. Also in these embodiments, one of the connecting portions 32 is formed by base members 135 and 235 and floating members 138 and 238 that are freely movably disposed on the base members 135 and 235. The size of the insertion portion 150 in which the temporary scaffolding structural member 7A is formed so as not to be escaped by the first cutout portion 142 of the base member 135 and the second cutout portion 147 of the floating member 138 is the same as that of the above-described embodiment. It is larger than the size of the part 50. In addition, the size of the insertion portion 250 in which the temporary scaffolding structural member 7B is formed so as not to be escaped by the first notch 242 of the base member 235 and the second notch 247 of the floating member 238 is the size of the insertion of the above-described embodiment. It is smaller than the size of the part 50.

  FIG. 11 shows an embodiment in which the connecting portion 62 provided at the other end in the length direction of the handrail 30 can be connected to the temporary scaffolding structural member 7A having a large diameter. 12 shows an embodiment in which the connecting portion 62 provided at the other end in the length direction of the handrail 30 can be connected to the temporary scaffolding structural member 7B having a small diameter. Also in these embodiments, the other connecting portion 62 is formed by hook members 165 and 265 having locking recesses 166 and 266, and the size of the insertion portion 152 formed by the locking recess 166 is the same as that described above. The size of the insertion portion 52 is larger than the size of the insertion portion 52 of the embodiment, and the size of the insertion portion 252 formed by the locking recess 266 is smaller than the size of the insertion portion 52 of the embodiment.

  Also in this embodiment, the base members 135 and 235 on which the floating members 138 and 238 are arranged are detachably attached to the handrail body 31 with bolts and nuts 34, and the hook members 165 and 265 are also attached to the handrail body 31 with bolts and nuts. 64 is detachably attached.

  Therefore, according to this embodiment, the base members 135 and 235 on which the floating members 138 and 238 are disposed are formed by the first notch portion of the base members 135 and 235 and the second notch portion of the floating members 238 and 238. A plurality of insertion parts 150 and 250 having different sizes are prepared, and the hook members 165 and 265 also have the insertion parts 152 and 252 having the locking recesses 166 and 266 in size. A plurality of different ones are prepared, and these base members 135 and 235 and hook members 165 and 265 can be exchanged and attached to the handrail main body 31.

  Therefore, according to this embodiment, the temporary scaffolding structural members 7A and 7B connected to the two connecting portions 32 and 62 provided at both ends in the length direction of the handrail 30 have a diameter (thickness). Even if it changes to a different thing, these connection parts 32 and 62 can be connected to these structural members 7A and 7B for temporary scaffolds, and the handrail 30 is the structural members 7A and 7B for temporary scaffolds from which a diameter differs. Has versatility.

  The temporary scaffolding structural members 7A and 7B in this embodiment are members constituting the stiffener 7 of the building frame 3 described in FIG. A J-shaped stiffening member 7A, and a horizontal stiffening member 7B installed between the stiffening member 7A and the main body of the building frame 3.

  Thus, even if the structural members for temporary scaffolding connected to the connecting portions 32 and 62 at both ends of the handrail 30 according to this embodiment are the stiffeners 7 of the same building frame 3, the connecting portions 32 and 62 are provided. By making the constituent members detachable from the handrail main body 31, a plurality of members having different diameters (thicknesses) constituting the stiffener 7 can be effectively dealt with. Of course, making the members constituting the connecting portions 32 and 62 detachable from the handrail body 31 can also be applied to connecting the connecting portions 32 and 62 to different temporary scaffold components.

  FIG.13 and FIG.14 has shown embodiment which formed the handrail main body 131 of the handrail 30 with the one pipe 133 with a larger diameter than the previous embodiment. That is, in this embodiment, the base member 35 on which the floating member 38 is arranged is connected to one end of the pipe 133 having a large diameter by the bolt and nut 34, and the hook member 65 is connected to the bolt and nut at the other end. 64. As shown in this embodiment, the handrail body to which the connecting portions 32 and 62 are detachably connected by the bolts and nuts 34 and 64 is changed in thickness by exchanging with pipes having different diameters. be able to.

  FIG. 15 shows a handrail 30 according to an embodiment in which the length of the handrail main body 31 can be expanded and contracted. The handrail main body 31 of this embodiment is not formed of a single pipe material. The handrail main body 31 includes a base member 35 having a floating member 38 disposed on one end thereof by bolts and nuts 34. The first basic pipe material 333 that is connected, the second basic pipe material 334 in which the hook member 65 is connected to the end of one side by a bolt and nut 64, and these basics having the same inner diameter and outer diameter. Of the pipe members 333 and 334, one end side is inserted into the second basic pipe 334, and an extension pipe member 336 joined and integrated to the second basic pipe member 334 by a welded portion 335, and The other end side of the extension pipe member 336 is slidably inserted into the first basic pipe member 333.

  A nut 337 is attached to the outer peripheral surface of the first basic pipe member 333, and a bolt 338 screwed into the nut 337 can penetrate the first basic pipe member 333 and enter the pipe member 333. When the extension pipe member 336 is slid with respect to the first basic pipe member 333 and the total length of the handrail main body 31 reaches a predetermined length, the bolt 338 is rotated and its tip is strongly attached to the extension pipe member 336. By the contact, the handrail body 31 can be fixed to the length.

  According to this embodiment, since the length of the handrail main body 31 can be adjusted, the handrail 30 is also used for various temporary scaffolds in which the distance between the two temporary scaffolding components that bridge the handrail 30 is different. Can be used in common, and the versatility of the handrail 30 is further improved.

  The present invention can be used for a handrail provided in a temporary scaffold for the safety of an operator.

FIG. 1 is a perspective view showing a temporary scaffold for a construction work site to which a handrail according to an embodiment of the present invention is applied. FIG. 2 is a front view showing the whole handrail shown in FIG. FIG. 3 is a perspective view showing one connecting portion of the handrail. FIG. 4 is a front view of the base member. FIG. 5 is a front view of the floating member. FIG. 6 is a front view showing the shape of the connecting portion before one connecting portion shown in FIG. 3 is connected to the stiffener of the building frame of FIG. 1 which is a component for temporary scaffolding. FIG. 7 is a front view showing the shape of one of the connecting portions shown in FIG. 3 after being connected to the stiffener of the building frame of FIG. 1 which is a temporary scaffolding structural member. FIG. 8 is a front view showing the other connecting portion of the handrail. FIG. 9 is a front view showing an embodiment of one connecting portion that can be applied to a temporary scaffold component having a large diameter. FIG. 10 is a front view showing an embodiment of one connecting portion that can be applied to a component for a temporary scaffold having a small diameter. FIG. 11: is a front view which shows embodiment of the other connection part applicable to the structural member for temporary scaffolds with a large diameter. FIG. 12 is a front view showing an embodiment of the other connecting portion that can be applied to the temporary scaffold component having a small diameter. FIG. 13 is a front view of one connecting portion showing an embodiment of a handrail in which the handrail body is formed of a pipe having a large diameter. FIG. 14 is a front view of the other connecting portion showing an embodiment of a handrail in which the handrail body is formed of a pipe having a large diameter. FIG. 15 is a partially broken front view of the handrail showing an embodiment in which the length of the handrail main body is adjustable.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,11 Temporary scaffolding 3, Building frame 7,7 'which is a structural member for temporary scaffolding 16 Stiffening material for building frame, which is a structural member for temporary scaffolding 16 Horizontal material by a single pipe which is a structural member for temporary scaffolding 30 , 131 Handrail body 32 One connecting portion 35, 135, 235 Base member 38, 138, 238 Floating member 42, 142, 242 First notch 47, 147, 247 Second notch 50, 52, 150, 250, 152,252 Insertion part 50A Inner / outer communication part 62 Other connecting part 65 Hook member 66,166,266 Locking recess 66A Upper part 66B Lower part 66C Outside part in the longitudinal direction of the handrail body 66D Handrail body Inner portion in the length direction 66E A straight length portion extending inward in the length direction of the handrail body

Claims (6)

Two connecting portions to be connected to the temporary scaffold constituent members constituting the temporary scaffolding are provided at both ends in the length direction of the handrail body, and the temporary scaffold constituent members are inserted into these connecting portions. In the handrail for temporary scaffolding, the connecting portion has an insertion portion connected to the constituent member for temporary scaffolding,
One of the two connecting portions is connected to an end portion in the length direction of the handrail main body, and a base member in which a first notched portion is formed, and the first notched portion. The base member is movably disposed so as to open and close, and a second notch is formed, and the first notch is loosened with respect to the base member so as to close the first notch And a floating member that forms the insertion portion in which the temporary scaffold component cannot be escaped by the second notch portion,
The other connecting portion is formed by a hook member in which the insertion portion is a locking recess for inserting and locking the temporary scaffold component .
The insertion portion in the one connecting portion formed by the first notch portion and the second notch portion when the floating member is idled with respect to the base member so as to close the first notch portion, It has a missing circle shape or a perfect circle shape having an inner and outer communication portion smaller than a diameter of the temporary scaffold component member inserted into the insertion portion,
The locking recess of the hook member in the other connecting portion has an upper portion, a lower portion, and a portion on the outer side in the length direction of the handrail body, and the length direction of the handrail body. The inner part is open toward the outside, and the size of the opening is a three-way closed locking recess that is larger than the diameter of the temporary scaffold component,
The lower portion has a linear length extending inward in the longitudinal direction of the handrail body in parallel with the handrail body,
The position of the temporary scaffold constituent member to which the other connecting portion is connected is shifted in the handrail length direction with reference to the position of the temporary scaffold constituent member to which the one connecting portion is connected. There are two positions, and the linear length of the lower part is a length that allows the two positions to enter the inside of the locking recess . The handrail for temporary scaffolding according to claim 1, wherein the handrail length is longer than the length of both hands of the operator. 3. The temporary scaffolding handrail according to claim 1, wherein the temporary scaffolding structural members to which the two connecting portions are connected are arranged in parallel facing each other in the handrail length direction. A handrail for temporary scaffolding, characterized by being a stiffener for building frames. The handrail for a temporary scaffold according to any one of claims 1 to 3, wherein the base member on which the floating member is arranged and the hook member are detachable from the handrail main body. Handrail for temporary scaffolding characterized by.   5. The handrail for a temporary scaffold according to claim 4, wherein the base member on which the floating member is arranged has a different size of the insertion portion formed by the first notch portion and the second notch portion. A plurality of members are prepared, and a plurality of members having different sizes of the insertion portions serving as the locking recesses are prepared, and the base member and the hook on which the floating members are arranged A handrail for a temporary scaffold, wherein a member can be attached to the handrail body after being replaced. The handrail for temporary scaffolding according to any one of claims 1 to 5, wherein a length of the handrail main body is adjustable.

Images