JP2014190070A - Height adjustment member and temporary scaffold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a height adjustment member capable of easily adjusting the installation height of a temporary scaffold.SOLUTION: A height adjustment member consists of a height adjustment column 68 and upper and lower fixtures 81, 82 for vertically fixing a vertical column 22 of a temporary scaffold to the height adjustment column 68 at least at two upper and lower positions. The height adjustment column 68 is provided vertically with plural height adjustment holes 67 and plural lock fittings 28 capable of fixing the lower fixture 81 to the height adjustment column 68 at various height positions. The lower fixture 81 consists of a height adjustment part 81a having a fixation hole 83 for fixing the vertical column 22 at any height position of the adjustment holes 67 and a support part 81b capable of vertically fixing the vertical column 22.

Description

  The present invention relates to a height adjustment member used in a temporary scaffold indoors and outdoors in a construction site such as a construction site or a civil engineering site, and a temporary scaffold incorporating the height adjustment member.

  Temporary scaffolds at construction sites include frame scaffolds mainly used during construction of buildings, single-pipe scaffolds and wedge-tight scaffolds mainly used during construction of houses, and system scaffolds and rolling towers. It is one mode of a temporary scaffold.

  Among these, the framework scaffold is a type that uses a building frame such as an H shape or a torii gate shape composed of vertical columns (also referred to as “construction material”) and horizontal rails (also referred to as “horizontal material”). In addition, the wedge-type scaffolding is a column member having a connecting piece such as a frame provided on the side and a short connecting material (also called “horizontal material”. In addition, the short connecting material is sometimes called “arm wood”. )), And a cloth frame with a floor (also referred to as “cloth board”) is bridged between the side rails facing each other or between the timbers (armwood). Used as a passageway. In addition, a striation (also referred to as “brace material”) or a handrail member may be attached.

  Of the members used in these temporary scaffolds, steel frames, aluminum tubes, and the like are typically used for building frames, support members, connecting materials, handrail members, and the like.

  The structure and assembly method of the frame scaffold will be described below with reference to the drawings.

  First, FIG. 1 shows an example of forming a frame scaffold using a torii-shaped building frame (hereinafter referred to as “torii frame”). (a) is a front view, (b) is a right side view.

  First, three torii frames 24 are arranged at equal intervals at right angles to the building 14, between the adjacent torii frames 24, a streak 25 is attached to the lock fitting 28b on the opposite side of the building, and also on the building side. By attaching the striation 25 to the lock fitting 28a and allowing the first-stage torii frame 24 to stand on its own, the first-stage scaffolding is formed. Note that the connecting pin 12 is fitted in the upper end of the vertical column 22 of the torii frame 24 in advance. After that, a floor-mounted cloth frame 9 serving as a second-stage scaffolding plate is bridged between the horizontal rails 23 above the first-stage adjacent torii frame 24, and then the first-stage torii frame 24 already erected. The lower part of the vertical column 22 of the torii frame 24 prepared separately is placed on and fixed to the vertical column 22 via the connecting pin 12 fitted in the upper end portion in advance. The frame 24 is erected. Thereafter, in the same manner as the first stage, the streak 25 is attached to the lock fitting 28b on the side opposite to the building, and the streak 25 is also attached to the lock fitting 28a on the building side, so that the second stage torii frame 24 is attached. The second stage scaffolding is formed by allowing the to stand independently. After that, a floor-mounted cloth frame 9 serving as a third-stage scaffolding plate is bridged between the horizontal rails 23 on the upper side of the second-stage adjacent torii frame 24, and then the second-stage torii frame 24 already erected. By connecting the lower part of the vertical column 22 of the torii frame 24 prepared separately to the vertical column 22 via the connecting pin 12 fitted in the upper end portion in advance, the third stage torii frame 24 is set up. Set up. Thereafter, in the same manner as in the second stage, the streak 25 is attached to the lock fitting 28b on the opposite side of the building, and the streak 25 is also attached to the lock fitting 28a on the building side to provide the third stage torii frame 24. A third-stage scaffolding is formed by allowing the to stand independently. In this way, the frame scaffold is formed until the required number of steps is reached. In addition, although the procedure which makes the frame of each step self-supporting by using a strut is described here, the frame of each step may be made self-supporting by replacing a part of the strut with a handrail frame.

  In this way, the temporary scaffolding at the construction site is formed by stacking scaffolds in stages according to the height of the construction, regardless of the type of the scaffolding. Therefore, in order to construct a temporary scaffold, it is necessary to hold the lowermost part of the temporary scaffold horizontally.

  Conventionally, a jack base is attached under a vertical column of a building frame constituting a temporary scaffold. Therefore, the lowermost part of the temporary scaffold can be held horizontally by adjusting the height of the jack base in accordance with the inclination of the grounding part at the lowermost part of the temporary scaffold.

  FIG. 2 is an example (conventional example) when the jack base 5 is attached under the vertical column 22 of the building frame. (a) is a front view, (b) is a front view showing only a jack base, and (c) is a sectional view of a screw portion of the jack base.

  The outer surface of the jack base 5 placed on the ground 10 is threaded 15, and the height of the vertical column 22 of the building frame can be adjusted by turning the jack handle 16. When the height adjustment by the jack base is not sufficient, further height adjustment has been made by fitting the height adjustment frame under the vertical column of the building frame constituting the temporary scaffold.

  FIG. 3 is a front view showing an example (conventional example) when the jack base 5 is attached under the vertical column 22 of the building frame via the height adjustment frame 60. Here, in order to ensure the rigidity of the lowermost part of the temporary scaffolding, the rooted single tube 61 is stopped by the clamp 62 in the horizontal direction. Further, the vertical column 22 is placed on the height adjustment frame 60 via the connecting pin 12.

  Also, because there is a large difference in height, such as a large slope or staircase, if the height adjustment frame cannot be installed under the vertical column of the building frame, the height adjustment frame is not used and the height is adjusted to the side of the vertical column. It may be handled by holding a single tube for adjusting the height.

  FIG. 4 is a left side view showing an example (conventional example) in the case of dealing with a large height difference caused by a level difference caused by the concrete foundation 13. A single pipe 63 for height adjustment is vertically held on the side surface of each vertical column 22 of the building frame, and the height between the vertical column 22 and the single tube 63 is fixed by clamps 62 at two locations. However, the permissible load is reduced accordingly. Here, in order to ensure the rigidity of the lowermost part of the temporary scaffold, the rooted single tube 61 is installed in the horizontal direction. Further, reinforcement is provided by installing a reinforcing single pipe 64 in an oblique direction along the height difference.

  Next, in patent document 1, it replaces with a height adjustment frame and it is proposed to respond | correspond to a height difference using the height adjustment pillar 68 installed directly under one of the vertical pillars of a building frame. . Here, a jack base is attached via a height adjustment column 68 having a plurality of height adjustment holes 67 in the vertical direction. In addition to the height adjustment by the jack base, the jack base is fixed to the height adjustment column 68. By changing the insertion position of the pin 70, the height can be adjusted for each vertical column. Here, the height adjusting column 68 is formed of a single tube.

  FIG. 5 is an example when the jack base 5 is attached via the height adjusting column 68 based on Patent Document 1. (a) is a front view, and (b) is a front view showing only the jack base and the height adjusting column 68. Here, in order to secure the rigidity of the lowermost part of the temporary scaffold, the rooting single tube 61 is installed in two horizontal directions. Further, reinforcement is provided between the height adjusting columns 68 by installing reinforcing single tubes 64 in two horizontal directions. The tenon 11 is used at the joint between the height adjusting column 68 and the vertical column 22.

  In Patent Document 2, instead of the height adjustment frame, a height adjustment column 66 composed of a double pipe (an inner tube 66a and an outer tube 66b) installed immediately below one of the vertical columns of the building frame is used. It has been proposed to deal with height differences. Here, the inner tube 66a slidable with respect to the outer tube 66b is provided with a plurality of height adjustment holes 67 in the vertical direction, and the external thread processing 15 is applied to the outer periphery of the upper end of the outer tube and the height is fixed. A vertically long fixing hole 71 is formed, and the height adjusting hole 67 provided in the inner tube 66a and the fixing pin 70 inserted into the fixing hole 71 are changed in position and by screw adjustment. The height can be adjusted for each pillar.

  FIG. 6 is an example when a height adjusting column 66 called a pipe support is attached under the vertical column 22 of the building frame based on Patent Document 2. (a) is a front view, and (b) is a front view showing only a height adjusting column 66 called a pipe support. Here, in order to secure the rigidity of the lowermost part of the temporary scaffold, the rooting single tube 61 is installed in two horizontal directions.

  In Patent Document 3, the height adjustment column is not attached directly below the vertical column of the building frame, but the height adjustment column 66 which is erected in parallel and adjacent to the vertical column, and the vertical column is perpendicular to the outer surface. There has been proposed a height adjustment member provided with a fixing metal fitting 73 having a U-shaped vertical wall 73c that can be held. Here, the height adjusting column 66 is composed of a double tube made up of an inner tube 66a and an outer tube 66b, and a plurality of height adjusting holes 67 are provided in the vertical direction on the inner tube 66a slidable with respect to the outer tube 66b. A vertical fixing hole 71 is formed on the outer periphery of the outer tube 66b at the upper end of the outer tube 66b, and a vertical fixing hole 71 for fixing the height is formed. By changing the insertion position of the fixing pin 70 inserted into the fixing hole 71 and adjusting the screw, the height to the grounding portion can be adjusted for each vertical column 22. And the fixing metal fitting 73 for fixing the vertical column 22 to the height adjusting member 66 is attached to the middle side surface of the outer tube 66b. The fixing bracket 73 has a vertical wall 73c having a U-shaped cross section, a lower fixing bracket 73a on which the lower portion of the vertical column 22 can be placed, and an upper fixing bracket 73b on which the vertical column can be fixed. It has.

  FIG. 7 is an example when a vertical column 22 of a building frame is attached to a height adjusting member called a pipe support based on Patent Document 3. (a) is a front view, and (b) is a front view showing only a height adjusting member called a pipe support. Here, the vertical column 22 of the building frame is hung on the side surface of the vertical wall 73c having a U-shaped cross section, placed on the lower fixing bracket 73a, and then fixed with the upper fixing bracket 73b. In addition, in order to ensure the rigidity of the lowest part of a temporary scaffold, the rooted single pipe 61 is installed in two horizontal directions.

JP 2001-241184 A Japanese Unexamined Patent Publication No. 2000-017833 JP 09-088330 A

  However, since the jack base 5 shown in FIG. 2 is usually made of a steel bar having a thread diameter of about 28 mm and a steel bar having an outer diameter of about 35 mm, the jack base 5 is weak against horizontal force and its height adjustment allowance. Is limited to 50 to 350 mm.

  When the height adjustment by the jack base is not sufficient, the height adjustment frame 60 shown in FIG. 3 can be fitted, but there is a limit to the height adjustment, and the height adjustment frame 60 and the jack can be adjusted. There are cases where it is not possible to cope by simply mounting the base 5 under the vertical column 22 of the building frame.

  In the method shown in FIG. 4, since the clamp 62 is used, it is necessary to install the reinforcing single pipe 64 obliquely for reinforcement. Where the allowable load of the temporary scaffold is originally 1.6 to 2.4 tons, the slip strength of the clamp 62 is weak, so the allowable load needs to be limited to half or less.

  In the height adjustment column 68 shown in Patent Document 1 (FIG. 5), since the rigidity (strength) in the lateral direction with respect to the joint portion of the column material is weak, the root of the single pipe 61 is strengthened in both the short side and the long side direction. Since installation is required, it takes time for installation. Further, since the height adjusting column 68 is short, the hoso 11 and the jack base 5 easily interfere with each other in the height adjusting column 68, and the jack base 5 cannot be lowered to the maximum.

  Since the height adjustment column 66 shown in Patent Document 2 (FIG. 6) is attached directly below the vertical column 22 of the building frame, the height adjustment allowance is limited, so it can be used when there is a large height difference. Can not. In this case as well, since it is necessary to install the reinforcing pipe and the single tube 61 in both the short side and long side directions, it takes time and effort. Furthermore, since the height adjusting column 66 requires the screw processing 15, the cost is increased.

  The height adjustment member shown in Patent Document 3 (FIG. 7) is a method in which the height adjustment column 66 is held on the side surface of the vertical column, and the height adjustment column 66 is erected adjacent to and parallel to the vertical column. It is not attached under the vertical column 22 of the building frame. Therefore, the height adjustment column 66 can be lengthened, and there is an advantage that the rigidity of the joint portion is increased because there is a portion that wraps with the vertical column 22.

  However, in the case where the height adjusting column 66 is held on the side surface of the vertical column 22 in this way, the horizontal resistance force of the temporary scaffold is reduced. The horizontal resistance does not generate much horizontal force due to the short movement distance of the worker in the short side direction (side surface) of the temporary scaffold, and the square frame shape is maintained with the rigidity of the single tube clamp 62. On the other hand, in the long side direction (front) of the temporary scaffold, a large horizontal force is generated due to the long movement distance of the worker, and the square frame shape is formed only by the rigidity of the clamp 62 of the single tube 61. It cannot be maintained. Therefore, in the long side direction (front side) of the temporary scaffold, in addition to the single tube 61, the horizontal force resistance single tube 65 needs to be attached obliquely.

  FIGS. 8 and 9 show a side view and a front view, respectively, of a method in which the height adjusting column 66 is held on the side surface of the vertical column 22. The quadrangular frame shape in FIG. 8 is formed by a horizontal frame 23 of the building frame, two single tubes 63 for height adjustment, and a single tube 61 that is rooted. Here, the horizontal beam 23 constituting the building frame is Since one side is formed, the square frame shape can be maintained by the rigidity of the clamp 62 of the single tube 61. On the other hand, the quadrangular frame shape in FIG. 9 is formed by a cloth frame 9 with a floor spanned between opposing crosspieces 23, two height adjusting single pipes 63, and a rooting single pipe 61. Here, since the cloth frame 9 with a floor spanned between the opposite horizontal rails 23 is only one side, the square shape of the square tube 61 is only determined by the rigidity of the clamp 62 of the single tube 61. It can be seen that the frame shape cannot be maintained.

  In this way, in the case of the system in which the height adjusting column 66 is held on the side surface of the vertical column 22, in addition to the necessity to attach the horizontal force resistance single tube 65 obliquely, the rigidity of the lowermost portion of the temporary scaffold is increased. In order to ensure, it is necessary to install the single tube 61 in the two horizontal directions. Therefore, it takes a lot of work to install and clamp these single tubes.

  The present invention can hold the lowermost part of the temporary scaffold horizontally even if the grounding part at the lowermost part of the temporary scaffold has a large inclination, and can reduce the labor of installing a single tube and clamping. It is an object to provide a height adjustment member and a temporary scaffold incorporating the height adjustment member.

  The present inventors have made various studies in order to solve the above problems. As a result, the following findings (a) to (e) were obtained.

  (a) The method of fitting the height adjustment frame under the vertical column of the temporary scaffolding or the method of fitting the height adjustment column directly under the vertical column of the temporary scaffolding cannot cope with the inclination with a large height difference. . Therefore, as shown in Patent Document 3, a method in which a height adjusting column is held on the side surface of the vertical column of the temporary scaffold is preferable.

  (b) However, as shown in Patent Document 3, a height adjusting column 66 that is erected adjacent to and parallel to the vertical column, and a U-shaped cross section that can vertically hold the vertical column 22 on the outer surface. The height adjustment member provided with the fixing metal fitting 73 having the vertical wall 73c is a double tube in which the height adjustment column 66 is composed of the inner tube 66a and the outer tube 66b, and the outer periphery of the upper end of the outer tube 66b. Since it is necessary to process the external thread, the cost is increased. In addition, it is necessary to secure the rigidity of the lowermost part of the temporary scaffolding. However, in order to install the single tube 61 and the horizontal force resistance single tube 65 for that purpose, there is no other way but to install a single tube and stop it with a clamp. Therefore, it takes time for that.

  (c) The male thread machining 15 described above was made to give the height adjustment member a fine height adjustment function, but the jack base 5 originally having a fine height adjustment function was provided at the bottom of the temporary scaffolding. Therefore, if a fine adjustment function is provided for this, the male thread processing 15 is not necessary, and the height adjustment column needs to be a double pipe composed of an inner pipe and an outer pipe. I realized that a single pipe could be used instead. If the height adjustment column 66 of the double pipe is replaced with the height adjustment column 68 of the single pipe, a plurality of lock fittings 28 can be provided on the outer surface of the height adjustment column 68 in the vertical direction, and the height Since the adjustment column 68 can be provided with a plurality of height adjustment holes 67 that can fix the vertical column at various height positions in the vertical direction, between the lock fittings 28 provided on the facing height adjustment column 68. The vertical column 22 is fixed at a desired height position by selecting the height adjusting hole 67 of the height adjusting column 68 as well as replacing the horizontal force resistance single tube 65 by attaching the strut 21. I thought I could do it.

  (d) That is, the height adjustment member is “the height adjustment column 68 and the upper fixing bracket 82 for vertically fixing the vertical column 22 of the temporary scaffold to the height adjustment column 68 at least at two upper and lower positions. The height adjusting column 68 includes a “height adjusting hole 67 for fixing the lower fixing bracket 81 to the height adjusting column 68 at various height positions” and a “lock fitting 28”. Each of the lower fixing brackets 81 includes a fixing hole 83 for fixing the vertical column 22 to any height position of the height adjusting hole 67. It is only necessary to include a height adjusting portion 81a and a supporting portion 81b that can fix the vertical column vertically. Then, a bolt 85 and a nut or a fixing pin are fixed between one of the height adjusting holes 67 formed in the height adjusting column 68 and the fixing hole 83 formed in the height adjusting portion 81a of the lower fixing bracket 81. By doing so, the vertical column 22 can be supported at a predetermined height position and attached to the height adjusting column 68. If fine adjustment of the height is necessary, the jack base 5 may be provided under the height adjustment column 68.

  The support part 81a in the lower fixing bracket 81 that can fix the vertical column 22 vertically may be any member that can fix the vertical column 22 vertically. As a method of fixing the vertical column 22 vertically, (i) fixing the vertical column 22 to the adjacent height adjusting column 68, or (ii) mounting the vertical column 2 vertically and lateral displacement thereof It is conceivable to fix the supporting portion 81b capable of preventing the above to the adjacent height adjusting column 68.

  (i) As a method of fixing the vertical column 22 to the adjacent height adjustment column 68, for example, the height adjustment hole 67 of the height adjustment column 68 and the hole drilled in the vertical column 22 are bolt nuts or What is necessary is just to connect both holes using the connection metal fitting which can be connected with a fixing pin. At this time, it is preferable that the connection fitting has a substantially C-shaped horizontal cross section capable of substantially including the height adjusting column 68 and the vertical column 22 respectively. Examples of the substantially C shape include a U shape and a U shape in addition to the C shape.

  Then, as a method of fixing the support part 81b on which the vertical pillar 22 of (ii) is mounted vertically and preventing the lateral displacement thereof to the adjacent height adjustment pillar 68, the support part 81b of the lower fixing bracket 81 can be used. And a height adjusting portion 81a having a fixing hole 83 for fixing at any height position of the height adjusting hole 67 of the height adjusting column 68, and the shape of the pedestal of the supporting portion 81b If the vertical column 22 is vertically mounted on the pedestal of the support portion 81b so that it can be externally or internally fitted, the lateral displacement can also be prevented. At this time, it is preferable that the height adjustment portion 81 a of the lower fixing bracket 81 has a substantially C-shaped horizontal section that can substantially include the height adjustment column 67. Examples of the substantially C shape include a U shape and a U shape in addition to the C shape. A connecting pin known as a joint fitting between vertical columns may be used for the support portion 81b.

  (e) Furthermore, it is preferable that the height adjusting columns 68 of the height adjusting member are connected by the connecting material 2. For this purpose, if a connecting fitting such as the top 4 is provided on the side surface of the height adjusting column 68, the connecting fitting 2 can be connected between the connecting fittings. This connecting material 2 serves as a substitute for the single pipe 61 that is installed in the horizontal direction in order to ensure the rigidity of the lowermost part of the temporary scaffold.

  The present invention has been completed based on the above findings, and the gist thereof lies in the following height adjusting members (1) to (9) and temporary scaffolds (10) to (11). Hereinafter, the inventions according to (1) to (11) may be collectively referred to as the present invention.

(1) Height adjustment composed of an upper fixing bracket 82 and a lower fixing bracket 81 for vertically fixing the height adjusting column 68 and the vertical column 22 of the temporary scaffold to the height adjusting column 68 at least at two upper and lower positions. A member,
The height adjustment column 68 includes a plurality of height adjustment holes 67 and a plurality of lock fittings 28 in the vertical direction that can fix the lower fixing bracket 81 to the height adjustment column 68 at various height positions. In addition, the lower fixing bracket 81 has a height adjusting portion 81a having a fixing hole 83 for fixing the vertical column 22 at any height position of the height adjusting hole 67, and the vertical column 22 vertically. A height adjusting member comprising a support portion 81b that can be fixed.

  (2) The lower fixing bracket 81 includes a height adjusting portion 81a having a fixing hole 83 for fixing the vertical column 22 at any height position of the height adjusting hole 67, and the vertical column 22 vertically. The height adjusting member according to (1) above, comprising a support portion 81b that can be placed on the base plate and can prevent lateral displacement thereof.

  (3) The height adjusting portion 81a of the lower fixing bracket 81 has a substantially C-shaped horizontal cross section capable of substantially including the height adjusting column 68, wherein the above (1) or (2) Height adjustment member.

  (4) The height adjusting member according to (2) or (3) above, wherein the support portion 81b of the lower fixing bracket 81 has a tube or bar shape.

  (5) The height adjusting member according to any one of (2) to (4), wherein the connecting pin 12 is attached to the support portion 81b of the lower fixing bracket 81.

  (6) The height adjusting member according to any one of the above (1) to (5), wherein the jack base 5 is attached under the height adjusting column 68.

  (7) The height adjusting member according to any one of (1) to (6) above, wherein a connecting fitting is provided on a side surface of the height adjusting column 68.

  (8) The height adjusting member according to the above (7), wherein the connecting member 2 is attached to a connection fitting provided on a side surface of the height adjusting column 68.

  (9) As a height adjustment column 68, a connection type height formed by connecting two or more height adjustment columns 68 via a connecting member 2 between connection fittings provided on the side surface of the height adjustment column 68. The height adjusting member according to (7) or (8) above, wherein a height adjusting column is used.

  (10) A temporary scaffold comprising the height adjusting member according to any one of (1) to (9) above.

  (11) The temporary scaffold according to any one of the above (1) to (10), wherein the strut 21 is attached to the lock fitting 28 provided on the height adjusting column.

  According to the present invention, the bottom of the temporary scaffold can be held horizontally even when the ground contact portion at the bottom of the temporary scaffold has a large inclination, and the labor of installing a single tube and clamping is reduced. It is possible to provide a height adjusting member that can be used, and a temporary scaffold incorporating the height adjusting member.

An example of forming a frame scaffold using a torii-shaped building frame is shown. (a) is a front view, (b) is a right side view. It is an example (prior art example) when a jack base is attached under the vertical column of a building frame. An example (conventional example) when a jack base is attached under a vertical column of a building frame via a height adjustment frame is shown. It is a left view which shows an example (conventional example) in the case of respond | corresponding to a big height difference. It is an example when a jack base is attached based on this height adjustment column based on patent document 1. FIG. It is an example when the height adjustment column called a pipe support is attached under the vertical column of a building frame based on patent document 2. FIG. It is an example when the vertical column of a building frame is attached to the height adjustment member called a pipe support based on patent document 3. FIG. It is a side view of the system which makes a height adjustment pillar hold on the side of a vertical pillar. It is a front view of the system which makes a height adjustment pillar hold on the side of a vertical pillar. It is an example (front view) of the height adjustment member which concerns on this invention. (a) is a height adjusting column, (b) is an upper fixing bracket, and (c) is a lower fixing bracket. The work of attaching a connecting member having a wedge metal fitting at the end to the top provided on the side surface of the height adjusting column is shown. It is an enlarged view of a lower fixing bracket among the height adjusting members according to FIG. It is an enlarged view of an upper fixing metal fitting among the height adjustment members concerning FIG. It is an example which erected a temporary scaffold using the height adjustment member which concerns on this invention shown in FIG. It is the other example which erected the temporary scaffold using the height adjustment member which concerns on this invention shown in FIG. It is the other example (left view) which installed the temporary scaffold on the steeply inclined surface using the height adjustment member which concerns on this invention shown in FIG. It is another example of the lower fixing metal fitting which concerns on this invention. It is another example of the lower fixing metal fitting which concerns on this invention. It is another example of the lower fixing metal fitting concerning the present invention. It is another example of the lower fixing metal fitting which concerns on this invention. It is another example of the upper fixing metal fitting concerning the present invention.

  A height adjusting member according to the present invention and a temporary scaffold incorporating the height adjusting member will be described below with reference to the drawings.

  FIG. 10 is an example (front view) of a height adjusting member according to the present invention. (a) is a height adjusting column, (b) is an upper fixing bracket, and (c) is a lower fixing bracket.

  The height adjusting member includes a height adjusting column 68, an upper fixing bracket 82, and a lower fixing bracket 81. The upper fixing bracket 82 and the lower fixing bracket 81 are brackets for vertically fixing the vertical column 22 of the temporary scaffold to the height adjusting column 68 at two upper and lower portions. The upper fixing bracket 82 may be one, or two or more.

  The height adjusting column 68 is made of a steel pipe having an outer diameter of 48.6 mm or 42.7 mm, and has five height adjusting holes 67 formed in the length direction thereof. Here, five height adjusting holes 67 are formed, but two or more height adjusting holes 67 may be provided, and the number thereof is not limited. The hole diameter is preferably 10.5 to 14 mm, but may be a size that allows an M10 bolt (two-sided shearing force about 1.7 t), an M12 bolt (two-sided shearing force about 3 t), or a bolt or fixing pin corresponding thereto. The interval between the height adjustment holes 67 is 200 mm here, but can be selected between 50 and 300 mm.

  The height adjusting column 68 has two lock fittings 28 attached to the outer surface of the steel pipe in the length direction by welding. The streaks (oblique material) 21 is a member having a flat end and a hole, and can be easily attached to the lock fitting 28. The height adjusting column 68 is provided with two lock fittings 28. However, when the interval between the struts 21 in the height direction is to be widened or the number of struts 21 to be installed is increased, three pieces are provided. You may provide above. The lock metal fitting 28 is a metal fitting that can fix the end portion of the streak 21 attached to the height adjusting column 68, and this stirrer 21 is installed obliquely in order to ensure the rigidity of the lowermost part of the temporary scaffold. The function of the horizontal force resistance single tube 65 can be substituted. That is, since it is necessary to use the clamp 62, it replaces the horizontal force resistance single tube 65 which takes time to install.

  Further, the height adjusting column 68 is provided with a connecting fitting such as a top 4 for connecting the connecting material 2 to the side surface thereof. The connecting material 2 can be fixed by a simple fixing method such as hitting the wedge metal fitting 2a on the end of the connecting material 2 through the connecting metal fitting such as the frame 4. This connecting material 2 can replace the function of the rooting single pipe 61 installed in the horizontal direction in order to ensure the rigidity of the lowermost part of the temporary scaffold. That is, since it is necessary to use the clamp 62, it takes a long time to install and replaces the single tube 61.

  FIG. 11 shows an operation of attaching the connecting member 2 having the wedge metal fitting 2a at the end to the top 4 provided on the side surface of the height adjusting column 68.

  The number of frames 4 provided on the side surface of the height adjusting column 68 is the number necessary for connecting the connecting members 2 and is provided only in one direction here, but may be provided in four directions in a cross shape. Good. In the case of the height adjusting column 68 that does not connect the connecting material 2, the connecting bracket such as the frame 4 may not be provided.

  12 is an enlarged view of the lower fixing bracket 81 in the height adjusting member 68 according to FIG. (a) is a plan view, and (b) is a front view.

  The lower fixing bracket 81 includes a height adjusting portion 81a having a fixing hole 83 for fixing the vertical column 22 to any height position of the height adjusting hole 67 of the height adjusting column 68, and the vertical column 22 vertically. And a support portion 81b that can prevent lateral displacement.

  Here, the support portion 81b and the height adjustment portion 81a are integrally formed, and the height adjustment portion 81a has a U-shaped horizontal section that can substantially include the height adjustment column 68. . Further, the support portion 81b is provided with a pedestal on which a connecting pin 12 can be fitted on a rectangular plate material, and the lowermost portion of the vertical column 22 is fitted on the pedestal via the connecting pin 12 on the pedestal. By doing so, the vertical column 22 can be placed, and no lateral displacement occurs.

  The lower fixing bracket 81 is a member that can transmit a load applied to the vertical column 22 to the height adjustment column 68, and can connect the vertical column 22 to the height adjustment column 68 without using the clamp 62. The allowable load is not reduced.

  FIG. 13 is an enlarged view of the upper fixing bracket 82 in the height adjusting member 68 according to FIG. (a) is a plan view, and (b) is a front view.

  The upper fixing bracket 82 is for auxiliaryly fixing the vertical column 22 to the height adjusting column 68. It only needs to be fixed to the upper part of the vertical column 22, and a universal clamp is used here. Two or more upper fixing brackets 82 may be used.

  FIG. 14 is an example in which a temporary scaffold is erected using the height adjusting member according to the present invention shown in FIG. (a) is a front view, and (b) is a right side view.

  Two height adjustment columns 68 are erected on the ground via the jack base 5, and the lowest height adjustment hole 67 of the height adjustment column 68 and the height adjustment portion 81 a of the lower fixing bracket 81. The lower fixing fitting 81 is fixed to each height adjusting column 68 by passing the bolt 85 through the fixing hole 83 and tightening with the nut 86. Then, one of the vertical columns 22 constituting the building frame is placed on the connecting pin (not shown) of the support portion 81b of one lower fixing bracket 81, and the upper portion and the height of the vertical column 22 are placed. The upper part of the adjustment column 68 is fixed by the upper fixing bracket 82. Further, the other of the vertical columns 22 constituting the building frame is placed on the connecting pin (not shown) of the support portion 81b of the other lower fixing bracket 81, and the upper portion and the height of the vertical column 22 are placed. The upper part of the adjustment column 68 is fixed by the upper fixing bracket 82. In addition, the height from the ground at this time to the lowest part of the vertical column 22 is 300 mm.

  A single pipe 61 is installed at the lower part in the long side direction (front and back) of the temporary scaffolding so as to secure the rigidity of the lowermost part of the temporary scaffolding in the horizontal direction. In addition, instead of using the rooted single tube 61, a binder may be used. Further, in the long side direction (front and back) of the temporary scaffold, two lines for securing the rigidity of the lowermost portion of the temporary scaffold are provided between the lock fittings 28 provided on the adjacent height adjusting columns 68. Difference 21 is attached to the plow. Due to this striation 21, the installation of the horizontal force resistance single pipe 65 installed obliquely can be omitted. Two struts 21 are also attached between the adjacent vertical columns 22, but this secures the rigidity of the building frame composed of the cross rails 23 and the two vertical columns 22. Has been installed for.

  FIG. 15 is another example in which a temporary scaffold is erected using the height adjusting member according to the present invention shown in FIG. (a) is a front view, and (b) is a right side view.

  Two height adjustment columns 68 are erected on the ground via the jack base 5, and the uppermost height adjustment hole 67 of the height adjustment column 68 and the height adjustment portion 81 a of the lower fixing bracket 81. The lower fixing fitting 81 is fixed to each height adjusting column 68 by passing the bolt 85 through the fixing hole 83 and tightening with the nut 86. Then, one of the vertical columns 22 constituting the building frame is placed on the connecting pin (not shown) of the support portion 81b of one lower fixing bracket 81, and the upper portion and the height of the vertical column 22 are placed. The upper portion of the adjustment column 68 is fixed by the upper fixing bracket 82, and the other of the vertical columns 22 constituting the building frame is placed on the connecting pin (not shown) of the support portion 81 b of the other lower fixing bracket 81. 14 and the upper part of the vertical column 22 and the upper part of the height adjusting column 68 are fixed by the upper fixing bracket 82. In addition, the height from the ground at this time to the lowest part of a vertical column is 700 mm.

  Then, similarly to FIG. 14, a single pipe 61 is installed at the lower part in the long side direction (front and back) of the temporary scaffold so as to be rooted in the horizontal direction in order to ensure the rigidity of the lowermost part of the temporary scaffold. In addition, instead of using the rooted single tube 61, a binder may be used. Further, in the long side direction (front and back) of the temporary scaffold, in order to ensure the rigidity of the lowermost portion of the temporary scaffold, two lock fittings 28 provided on the adjacent height adjusting columns 68 are provided. The strut 21 is attached to the plow, and the strut 21 can omit the installation of the horizontal force resistance single pipe 65 installed obliquely. Two struts 21 are also attached between the adjacent vertical columns 22, but this secures the rigidity of the building frame composed of the cross rails 23 and the two vertical columns 22. This is also the same as FIG.

  However, unlike FIG. 14, in the short side direction (the left side surface and the right side surface) of the temporary scaffold, the connecting material 2 is connected via the top 4 between the height adjustment columns. This is because the height from the ground to the lowest part of the vertical column 22 is as high as 700 mm, and therefore it is necessary to ensure the rigidity of the lowest part of the temporary scaffolding. Was installed. Note that, instead of the connecting material 2, a single-rooted pipe may be used.

  FIG. 16 is another example (left side view) in which a temporary scaffold is erected on a steeply inclined surface using the height adjusting member according to the present invention shown in FIG.

  One of the vertical columns 22 constituting the building frame is placed on the concrete foundation 13 via the jack base 5. One height adjusting column 68 is erected on the lower ground 10 via the jack base 5, and is fixed to the height adjusting hole 67 at the second position from the top of the height adjusting column 68 and fixed to the lower part. The lower fixing bracket 81 is fixed to the height adjusting column 68 by passing the bolt 85 through the fixing hole 83 of the height adjusting portion 81a of the bracket 81 and tightening with a nut (not shown). And while the other of the vertical pillar 22 which comprises a building frame is mounted on the connection pin 12 of the support part 81b of the lower fixture 81, the middle part of the vertical pillar 22 and the upper part of the height adjustment pillar 68 Is fixed by the upper fixing bracket 82.

  In the long side direction (front side) of the temporary scaffold, there is a struggle to secure the rigidity of the lowermost part of the temporary scaffold between the lock fittings 28 provided on the adjacent height adjusting columns (not shown). 21 is attached to the brush. By this striation 21, it is possible to omit the installation of the horizontal force resistance single pipe 65 that is installed obliquely in the long side direction (front) of the temporary scaffold. A single pipe 61 is installed at the lower part in the long side direction (front side) of the temporary scaffold so as to be horizontally rooted in order to ensure the rigidity of the lowermost part of the temporary scaffold. Further, on the short side (left side surface and right side surface) of the temporary scaffold, a reinforcing single pipe 64 is installed obliquely between one lower portion of the vertical column 22 and the lower portion of the height adjusting column 68 constituting the building frame. Has been. Here, the rooted single pipe 61 is used, but a connecting material may be used instead.

  FIG. 17 is another example of the lower fixing bracket 81 according to the present invention. (a) is a plan view, and (b) is a front view.

  The lower fixing bracket 81 includes a height adjusting portion 81a having a fixing hole 83 for fixing the vertical column 22 of the temporary scaffold to any height position of the height adjusting hole 67 of the height adjusting column 68, and This is a connecting bracket in which a vertical column 22 or a support portion 81b capable of fixing a member vertically is integrally formed. Then, the height adjusting hole 67 of the height adjusting column 68 and a hole (not shown) drilled in the vertical column 22 are connected by a bolt nut or a fixing pin, respectively, so that the vertical column 22 of the temporary scaffold is provided. Further, the height adjusting column 68 can be fixed vertically. Here, the connection metal fitting has a U-shape that can substantially include the height adjustment column 68 and the vertical column 22, respectively. Two or more lower fixing brackets 81 may be used.

  FIG. 18 shows another example of the lower fixing bracket 81 according to the present invention. (a) is a plan view, and (b) is a front view.

  The lower fixing bracket 81 includes a height adjusting portion 81a having a fixing hole 83 for fixing the vertical column 22 to any height position of the height adjusting hole 67 of the height adjusting column 68, and the vertical column 22 vertically. And a support portion 81b that can prevent lateral displacement.

  Here, the support portion 81b and the height adjustment portion 81a are integrally formed, and the height adjustment portion 81a has a U-shaped horizontal section that can substantially include the height adjustment column 68. . Further, the support portion 81b is provided with a pedestal made of a circular tube into which the connecting pin 12 can be fitted, and the vertical portion 22 is fitted vertically through the connecting pin 12 on the pedestal so as to be fitted vertically. The column 22 can be placed and no lateral displacement occurs.

  The lower fixing bracket 81 is a member that can transmit a load applied to the vertical column 22 to the height adjustment column 68, and can connect the vertical column 22 to the height adjustment column 68 without using the clamp 62. The allowable load is not reduced.

  FIG. 19 shows another example of the lower fixing bracket 81 according to the present invention. (a) is a plan view, and (b) is a front view.

  The lower fixing bracket 81 includes a height adjusting portion 81a having a fixing hole 83 for fixing the vertical column 22 to any height position of the height adjusting hole 67 of the height adjusting column 68, and the vertical column 22 vertically. And a support portion 81b that can prevent lateral displacement.

  Here, the support portion 81b and the height adjustment portion 81a are integrally formed, and the height adjustment portion 81a has a U-shaped horizontal section that can substantially include the height adjustment column 68. . Moreover, the base of the support part 81b has a short circular tube fixed on a rectangular plate, and the vertical column 22 can be placed by fitting the bottom of the vertical column 22 to the circular tube. Also, no lateral displacement occurs.

  FIG. 20 shows another example of the lower fixing bracket 81 according to the present invention. (a) is a plan view, and (b) is a front view.

  The lower fixing bracket 81 includes a height adjusting portion 81a having a fixing hole 83 for fixing the vertical column 22 to any height position of the height adjusting hole 67 of the height adjusting column 68, and the vertical column 22 vertically. And a support portion 81b that can prevent lateral displacement.

  Here, the support portion 81b and the height adjustment portion 81a are integrally formed, and the height adjustment portion 81a has a U-shaped horizontal section that can substantially include the height adjustment column 68. . In addition, a short square tube is fixed on the support member 81b on a rectangular plate, and the vertical column 22 can be placed by fitting the bottom of the vertical column 22 into the square tube. Also, no lateral displacement occurs.

  FIG. 21 is another example of the upper fixing bracket 82 according to the present invention. (a) is a plan view, and (b) is a front view.

  The upper fixing bracket 82 is for auxiliaryly fixing the vertical column 22 to the height adjusting column 68. As long as it can be fixed to the upper part of the vertical column 22, a metal fitting in which a clamp is fixed to a substantially U-shaped metal fitting is used here. Two or more upper fixing brackets 82 may be used.

According to the present invention, the bottom of the temporary scaffold can be held horizontally even when the ground contact portion at the bottom of the temporary scaffold has a large inclination, and the labor of installing a single tube and clamping is reduced. It is possible to provide a height adjusting member that can be used, and a temporary scaffold that incorporates the height adjusting member.

2 Connecting material 2a Wedge metal fittings 4 Top 5 Jack base 9 Cloth frame with floor 10 Ground 11 Hozo material 12 Connecting pin 13 Concrete foundation 14 Building 15 Screw processing 16 Jack handle 20 Handrail member 22 Vertical pillar 23 Horizontal rail 24 Torii frame 25 Streak 28 Lock metal fittings 28a Lock metal fittings 28b Lock metal fittings 60 Height adjustment frame 61 Single pipe for rooting 62 Clamp 63 Single pipe for height adjustment 64 Single pipe for reinforcement 65 Single pipe for horizontal force resistance 66 Height adjustment column (double tube)
66a Inner tube of height adjustment column 66b Outer tube of height adjustment column 67 Height adjustment hole 68 Height adjustment column (single tube)
70 fixing pin 71 vertically long fixing hole (patent documents 2 and 3)
73 Fixing bracket (Patent Document 3)
73a Lower fixing bracket 73b Upper fixing bracket 73c Vertical wall with U-shaped cross section 81 Lower fixing bracket (present invention)
81a Height adjustment portion 81b Support portion 82 Upper fixing bracket (present invention)
83 Fixing hole (present invention)
85 bolts 86 nuts

Claims (11)

A height adjusting member comprising a height adjusting column and a vertical fixing column and a vertical fixing column, and an upper fixing bracket and a lower fixing bracket for fixing the vertical column vertically to the height adjusting column at least at two positions,
The height adjustment column has a plurality of height adjustment holes and lock fittings in the vertical direction that can fix the lower fixing bracket to the height adjustment column at various height positions, and the lower fixing bracket. Comprises a height adjusting portion having a fixing hole for fixing the vertical column at any height position of the height adjusting hole, and a support portion capable of fixing the vertical column vertically. Height adjustment member.   The lower fixing bracket includes a height adjustment portion having a fixing hole for fixing the vertical column at any height position of the height adjustment hole, and the vertical column can be placed vertically and in the lateral direction. The height adjusting member according to claim 1, comprising a support portion that can prevent displacement.   The height adjusting member according to claim 1, wherein the height adjusting portion of the lower fixing bracket has a substantially C-shaped horizontal section that can substantially include the height adjusting column.   The height adjusting member according to claim 2 or 3, wherein the support portion of the lower fixing bracket has a tube shape or a bar shape.   The height adjusting member according to any one of claims 2 to 4, wherein a connecting pin is attached to a support portion of the lower fixing bracket.   The height adjusting member according to any one of claims 1 to 5, wherein a jack base is attached under the height adjusting column.   The height adjusting member according to any one of claims 1 to 6, wherein a connecting fitting is provided on a side surface of the height adjusting column.   The height adjusting member according to claim 7, wherein a connecting member is attached to a connection fitting provided on a side surface of the height adjusting column.   As a height adjustment column, use a connection type height adjustment column formed by connecting two or more height adjustment columns via a connecting material between connecting metal fittings provided on the side surfaces of the height adjustment column. The height adjusting member according to claim 7 or 8, wherein the height adjusting member is characterized.   A temporary scaffold comprising the height adjusting member according to any one of claims 1 to 9.   The temporary scaffold according to any one of claims 1 to 10, wherein a strut is attached to a lock fitting provided on the height adjusting column.

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