JP2022163965A - Temporary scaffold, and attaching method of clamp - Google Patents

Abstract

To easily decide an attachment position of a clamp at a construction site when attaching a clamp having an insertion hole into which a wedge material is inserted, to a post.SOLUTION: A clamp 80 comprises a first pinching member 81 and a second pinching member 82 which pinch a post 101A in a radial direction. In the first pinching member 81, a contact face being in contact with an outer peripheral face of the post 101A is formed, and a part of an insertion hole PA in a circumference direction is open in the contact face to be released. On the outer peripheral face of the post 101A, a mark portion 110 as a standard in attaching the clamp 80 is provided so as to be disposed in an opening of the contact face. A width of the post 101A in a circumference direction at the opening of the contact face corresponds to a size of the post 101A in a circumference direction at the mark portion 110.SELECTED DRAWING: Figure 12

Description

TECHNICAL FIELD The present invention relates to a temporary scaffolding constructed at construction sites of various buildings, civil engineering work sites, etc., and a method of attaching clamps to posts.

2. Description of the Related Art Temporary scaffolding is conventionally constructed at construction sites of various buildings and civil engineering work sites according to the content of the work. A general temporary scaffolding, for example, as disclosed in Patent Document 1, is composed of a plurality of posts, cloth materials that connect these posts, and scaffolding boards that are stretched over the cloth materials to form a work floor. It is configured.

When constructing a temporary scaffold it is possible to use pocket clamps, for example as disclosed in US Pat. The pocket clamp includes a pair of clamping members that clamp the outer peripheral surface of the post from both sides in the radial direction, a connecting shaft that connects the pair of clamping members so that they can be opened and closed, and a pair of clamping members that are held together when the pair of clamping members are in a closed state. and a fastening member to be fastened. When attaching the pocket clamp to the strut, first, the pair of clamping members are opened, and then the strut is arranged between the clamping members. After that, both clamping members are fastened by a fastening member.

Japanese Patent No. 6444009 Japanese Patent No. 6505340

By the way, since the pockets are welded to the conventional strut at regular intervals in the vertical direction, it is not easy to stretch the cloth material horizontally by fixing the cloth material to the pocket numbered from the bottom, for example. However, with the pocket clamps of Patent Literatures 1 and 2, it may be difficult to horizontally hang the cloth material.

That is, since the pocket clamps of Patent Documents 1 and 2 can freely change the mounting position with respect to the support, for example, when fixing the cloth material, the height of the cloth material can be set to an arbitrary height to improve the degree of freedom in constructing the scaffold. On the other hand, it becomes difficult to match the height of the pocket clamp attached to the left strut and the pocket clamp attached to the right strut, for example. In order to solve this problem, for example, it is conceivable to match the heights of the left and right pocket clamps while measuring the height at the work site.

On the other hand, even if the height of the pocket clamp is freely changed, it is sufficient that the height can be changed at a certain pitch, so there is little need for stepless change.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and its object is to make it possible to easily determine the mounting position of a clamp having an insertion hole into which a wedge member is inserted, at the work site when the clamp is mounted on a post. It is to be

In order to achieve the above object, according to a first aspect of the present disclosure, there is provided a post, a scaffolding component, and an insertion hole into which a wedge member provided on the scaffolding component is inserted from above, and is attached to the post. Temporary scaffolding with clamps and clamps can be assumed. The clamp includes a first clamping member and a second clamping member that contact an outer peripheral surface of the column from one side and the other side in the radial direction of the column to clamp the column in the radial direction, The clamping member is formed with a contact surface that contacts the outer peripheral surface of the support so as to extend in the circumferential direction of the support. and a mark portion serving as a reference for attaching the clamp is provided on the outer peripheral surface of the support so as to be arranged in the opening of the contact surface, and the width of the support in the circumferential direction at the opening of the contact surface is , correspond to the circumferential dimension of the post at the mark.

According to this configuration, when the clamp is attached to the support, the position of the clamp relative to the support is determined at a predetermined position by arranging and attaching the clamp with reference to the mark provided on the support. When positioning the clamp at a predetermined position, since a part of the insertion hole in the circumferential direction is open to the abutment surface of the clamp, the mark portion of the strut may be arranged in this opening. At this time, since the width of the opening of the abutment surface corresponds to the size of the mark portion, the position of the clamp in the circumferential direction can be determined easily and accurately. Also, when the clamp is positioned so that the mark of the post is positioned within the opening, the height of the clamp is also accurately determined.

In the second aspect of the present disclosure, the marking portion includes a linear first linear marking portion extending in the circumferential direction of the support, and the width of the support in the circumferential direction at the opening of the contact surface corresponds to the circumferential dimension of the support in the first linear mark portion.

According to this configuration, by providing the first linear mark portion extending in the circumferential direction of the column, it becomes easy to grasp the mounting position of the clamp in the height direction. In addition, since the dimension of the first linear mark portion corresponds to the width of the opening of the contact surface, the position in the circumferential direction is also determined accurately.

In a third aspect of the present disclosure, the first linear mark portion is arranged on an extended surface obtained by extending the upper surface of the first holding member.

According to this configuration, the height of the clamp can be easily determined by arranging the first linear mark portion on the extended surface of the upper surface of the first clamping member.

In a fourth aspect of the present disclosure, the marking portion includes a linear second linear marking portion extending in the longitudinal direction of the column from the center portion in the circumferential direction of the column in the first linear marking portion. there is

According to this configuration, by providing the second linear mark portion extending in the longitudinal direction of the temporary scaffold support, it becomes easy to grasp the mounting position of the clamp in the circumferential direction.

According to a fifth aspect of the present disclosure, the mark portion is stamped on the outer peripheral surface of the support. According to this configuration, the mark portion is less likely to disappear due to friction with other members or aging. Moreover, even if the stamped portion rusts, the function as the mark portion is not impaired, so the clamp can be positioned accurately over a long period of time.

In a sixth aspect of the present disclosure, a temporary scaffold comprising a support, a scaffold component, and a clamp attached to the support, having an insertion hole into which a wedge member provided on the scaffold component is inserted from above. can assume a clamp attachment method for attaching the clamp to the strut. A method of attaching the clamp includes a step of bringing a first clamping member and a second clamping member of the clamp into contact with the outer peripheral surface of the support from one side and the other side in the radial direction of the support, respectively; An opening for opening a part of the insertion hole in the circumferential direction is formed in the contact surface of the clamping member that contacts the outer peripheral surface of the support, and the width of the support in the circumferential direction at the opening of the contact surface. corresponds to the circumferential dimension of the post provided in the outer peripheral surface of the post, and the mark is placed in the opening of the contact surface to position the clamp on the post. and fastening the first clamping member and the second clamping member after positioning the clamp.

As described above, a part of the insertion hole in the circumferential direction is open to the contact surface of the clamp, and the mark portion provided on the support can be arranged in this opening, and the width of the opening of the contact surface can be adjusted. corresponds to the size of the mark portion, it is possible to easily and accurately determine the mounting position of the clamp to the column at the work site.

It is a perspective view showing a part of temporary scaffolding according to Embodiment 1 of the present invention. FIG. 11 is a side view of the intermediate portion of the strut; It is a side view near the upper part of the support|pillar for temporary scaffolds to which the joint pin is not attached. It is a side view which shows a part of support|pillar provided with an automatic locking mechanism. Fig. 10 is a side view showing a case where a single tube to which a joint pin is attached is used as a single tube type strut; FIG. 10 is a side view of a single tube joint; FIG. 4 is a side view of a first joint that connects the lower single-tube type column and the upper temporary scaffolding column; FIG. 4 is a side view of a second joint connecting the lower temporary scaffolding support and the upper single-tube type support; Fig. 3 is a perspective view of a pocket clamp; Fig. 2 is a plan view of the pocket clamp; Fig. 3 is a plan view of the pocket clamp in its open state; It is a perspective view explaining the attachment point of a pocket clamp. Fig. 10 is a perspective view of a post with a pocket clamp attached; Fig. 10 is a perspective view of a clamp used in the temporary scaffolding according to Embodiment 2 of the present invention; 9 equivalent view of a clamp according to Embodiment 2. FIG. 10 equivalent view of a clamp according to Embodiment 2. FIG.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail based on the drawings. It should be noted that the following description of preferred embodiments is essentially merely illustrative, and is not intended to limit the invention, its applications, or its uses.

(Embodiment 1)
FIG. 1 is a perspective view showing a part of a wedge binding type temporary scaffolding A according to Embodiment 1 of the present invention. Temporary scaffolding A is constructed at various construction sites and civil engineering work sites, depending on the type of work and the shape and structure of the building. At the construction site of a building having such a structure, it may be constructed along the outer wall surface of the building.

The temporary scaffolding A includes posts 101A, 101B, 101C, . 105. The number of these members is not particularly limited, and varies according to the scale of the temporary scaffold A.

The temporary scaffolding supports 101A, 101B, 101C, . . . are all the same. For the sake of convenience, the temporary scaffolding column 101A will be called the first column, the temporary scaffolding column 101B will be called the second column, and the temporary scaffolding column 101C will be called the third column. Since the first to third columns 101A, 101B, and 101C are the same, the following description will describe the first column 101A in detail. The first to third struts 101A, 101B, 101C may have different lengths.

The jack base 102, the cloth material 103, the scaffolding board 104, and the temporary scaffolding handrail 105 are scaffolding constituent members that constitute a part of the temporary scaffolding A. As shown in FIG. The cloth member 103 is a member that extends horizontally and connects the first to third columns 101A, 101B, and 101C. Wedge-shaped members (wedge members) protruding downward are provided at both ends of the cloth member 103, although not shown. It is possible to connect. The scaffold board 104 is a member that is installed in a state of being stretched over the cloth material 103 and constitutes a scaffold on which the worker stands. The temporary scaffolding handrail 105 is a member that is connected to the first to third pillars 101A, 101B, and 101C and prevents the worker from falling onto the scaffolding board 104. FIG. The temporary scaffolding handrail 105 is also provided with a wedge member (not shown), and the temporary scaffolding handrail 105 can be attached to the first to third pillars 101A, 101B, and 101C using this wedge member. It has become. Scaffolding components also include cloth frames (not shown), skirting boards (not shown), wall ties (not shown), stairs (not shown), etc., which are also required. It can be attached to the first to third struts 101A, 101B, and 101C using wedge members according to the requirements.

The first column 101A is made of, for example, a metal pipe having a circular cross section, and is installed in a posture in which the axis is vertical. The upper part of the jack base 102 is inserted in the lower part of the 1st support|pillar 101A. The lower portion of the first strut 101A and the upper portion of the jack base 102 are engaged with each other so as not to cause circumferential displacement.

FIG. 2 is a side view of the vertical intermediate portion of the first support 101A, and a mark portion 110, which will be described later, is provided on the outer peripheral surface of the first support 101A. FIG. 3A shows the upper part of the first support 101A and its vicinity. A cylindrical small-diameter portion 101a having a smaller diameter than the intermediate portion of the first support 101A protrudes upward from the upper portion of the first support 101A. Four through holes 101b penetrating the peripheral wall of the small-diameter portion 101a in the thickness direction are provided at equal intervals (90° intervals) in the circumferential direction in a portion near the upper end portion of the small-diameter portion 101a. All four through holes 101b have the same circular shape and the same diameter. Two opposing through holes 101b, 101b form one set, and two sets are provided in this example.

As shown in FIG. 3B, an automatic lock mechanism 101c is provided below the first support column 101A. The automatic locking mechanism 101c has a locking member 101d. The lock member 101d can be switched between a lock position protruding radially inward from the inner peripheral surface of the first support column 101A and a non-lock position retracted from the lock position. This locking member 101d can be operated by an operating member 101e. For example, if the operating member 101e is kept in the posture shown in FIG. 3B, the locking member 101d can be brought to the locked position. On the other hand, if the operating member 101e is rotated from the posture shown in FIG. be able to. The structure of such an automatic locking mechanism 101c is conventionally known in the field of the wedge binding type temporary scaffold A.

The first strut 101A may be composed of a member other than the member having the small diameter portion 101a described above. An example is shown in FIG. The first strut 101A shown in FIG. 4 is a single-tube type strut made of a single tube, and has the same outer diameter from the top end to the bottom end. The four through-holes 101b described above are also formed in the first strut 101A, which is a single-tube type strut. A joint pin P can be attached to the two opposing through holes 101b, 101b. The joint pin P includes a cylindrical main body P1 and heads P2 formed at both ends of the main body P1, and is made of a high-strength member such as metal. A body portion P1 of the joint pin P is inserted through one pair of through holes 101b, 101b, and extends continuously across both radial direction end portions of the body portion P1. Head P2 is arranged to protrude outward from through hole 101b and has an outer diameter larger than the diameter of through hole 101b. A peripheral portion of the head P2 contacts the outer peripheral surface of the small diameter portion 101a to prevent the pin P from coming off.

FIG. 5 shows a single-tube joint 200 that connects the single-tube type first struts 101A. That is, when the height of the temporary scaffolding A is not enough with one first support column 101A, a plurality of first support columns 101A are connected and used. A single-tube joint 200 can be used when connecting a plurality of single-tube type first struts 101A. The single pipe joint 200 includes an upper tubular portion 201 , a lower tubular portion 202 and an intermediate tubular portion 203 . These cylindrical portions 201, 202, and 203 are cylindrical. The lower end portion of the upper tubular portion 201 is connected to the upper end portion of the intermediate tubular portion 203 , and the upper end portion of the lower tubular portion 202 is connected to the lower end portion of the intermediate tubular portion 203 . The outer diameter of the upper cylindrical portion 201 is set slightly smaller than the inner diameter of the single-tube type first strut 101A shown in FIG. can do. The outer diameter of the lower tubular portion 202 is set to be the same as the outer diameter of the upper tubular portion 201 . Therefore, the lower cylindrical portion 202 can be inserted into the upper portion of the single-tube type first strut 101A.

Two upper slits 201a are formed in the upper cylindrical portion 201 so as to be spaced from each other in the circumferential direction. The upper slit 201 a is open at the upper end of the upper tubular portion 201 , extends downward from there, and then bends in the circumferential direction of the upper tubular portion 201 . When connecting the upper first support column 101A to the single pipe joint 200, the upper cylindrical portion 201 is inserted into the lower portion of the first support column 101A. When the main body P1 reaches the lower part of the upper slit 201a, the first support 101A and the single pipe joint 200 are relatively rotated, and the main body P1 is moved upward. By inserting it into the bent portion of the slit 201a, the single pipe joint 200 and the upper first strut 101A can be connected so as not to separate.

A lower slit 202a similar to that of the upper tubular portion 201 is formed in the lower tubular portion 202 as well. The lower slit 202a is open at the lower end of the lower cylindrical portion 202, extends upward from there, and then bends in the circumferential direction of the lower cylindrical portion 202. As shown in FIG. As a result, the single pipe joint 200 and the lower first strut 101A can be connected together so as not to separate.

The outer diameter of the intermediate cylindrical portion 203 is set to be substantially the same as the outer diameter of the single-tube type first strut 101A. Therefore, the intermediate cylindrical portion 203 is interposed between the lower end portion of the first support column 101A on the upper side and the upper end portion of the first support column 101A on the lower side.

FIG. 6 is a side view of the first joint 300 that connects the single-tube type first column 101A positioned below and the first column 101A positioned above. The lower portion of the first joint 300 is composed of a lower tubular portion 302 which is the same as the lower tubular portion 202 shown in FIG. 5. The lower tubular portion 302 is formed with a lower slit 302a. The upper portion of the first joint 300 is composed of a cylindrical upper cylindrical portion 301 having substantially the same diameter as the lower portion. Four through holes 301a are provided in the upper cylindrical portion 301 at regular intervals in the circumferential direction. A lower end portion of the upper tubular portion 301 and an upper end portion of the lower tubular portion 302 are connected.

The lower single-tube type first strut 101 A (shown in FIG. 4 ) can be connected to the lower tubular portion 302 of the first joint 300 . On the other hand, since an automatic locking mechanism 101c as shown in FIG. 3B is provided at the lower part of the first support 101A located above, the upper cylindrical part 301 of the first joint 300 is attached to the lower part of the first support 101A. When the first strut 101A and the first joint 300 are rotated relative to each other after insertion, the lock member 101d in the lock position enters one of the through holes 301a of the upper cylindrical portion 301, thereby moving upward. The first strut 101A and the first joint 300 can be connected so as not to separate.

FIG. 7 is a side view of the second joint 400 that connects the lower first column 101A and the upper single-tube type first column 101A. The upper part of the second joint 400 is composed of an upper tubular portion 401 which is the same as the upper tubular portion 201 shown in FIG. The lower portion 402 of the second joint 400 is configured in the same manner as the portion provided with the automatic locking mechanism 101c shown in FIG. 3B, and includes an automatic locking mechanism 402d including a locking member 402d and an operating member 402e.

The upper single-tube type first strut 101 A (shown in FIG. 4 ) can be connected to the upper tubular portion 401 of the second joint 400 . On the other hand, for the first support 101A located below, the upper part of the support without the joint pin P (shown in FIG. 3A) is inserted into the lower cylindrical portion 402 of the second joint 400, and then the first support 101A and the second support 101A are separated from each other. When the joint 400 and the joint 400 are rotated relative to each other, the lock member 402d in the lock position enters the through hole 101b of one of the first support columns 101A, thereby locking the first support column 101A and the second joint 400 positioned below. It can be connected so as not to detach.

As described above, by using the single pipe joint 200 shown in FIG. 5, the first joint 300 shown in FIG. 6, and the second joint 400 shown in FIG. The first struts 101A and 101A can be connected in a circumferentially aligned state, and in the connected state, relative rotation between the first struts 101A located above and the first struts 101A located below can be prevented. Further, by using the first joint 300 shown in FIG. 6 and the second joint 400 shown in FIG. 7, even if the structures of the upper and lower first struts 101A are different from each other, they can be connected.

Next, the configuration of the pocket clamp 80 will be described with reference to FIGS. 8 to 11. FIG. The pocket clamps 80 used in the temporary scaffolding A of Embodiment 1 are all the same, but may be different. The pocket clamp 80 includes a first clamping member 81 and a second clamping member 82 that clamp the first strut 101A from both sides in the radial direction, a connecting shaft 83, a bolt 84, a bolt support shaft 85, and a nut 86. there is Base ends of the first holding member 81 and the second holding member 82 are rotatably connected to each other by a connecting shaft 83 extending in the vertical direction.

The first clamping member 81 and the second clamping member 82 are formed by pressing a steel plate or the like, for example. The first clamping member 81 includes a first vertical plate portion 81a formed to surround the first support column 101A, and a first vertical plate portion 81a protruding from the upper portion of the first vertical plate portion 81a in a direction approaching the outer peripheral surface of the first support column 101A. 1 upper plate portion 81b, and a first lower plate portion 81c (shown in FIG. 11) projecting from the lower portion of the first vertical plate portion 81a in a direction approaching the outer peripheral surface of the first column 101A.

With the pocket clamp 80 attached to the first strut 101A, the first vertical plate portion 81a is arranged to face the outer peripheral surface of the first strut 101A with a predetermined gap therebetween. A first abutment surface 81d formed at the protruding direction tip portions of the plate portion 81b and the first lower plate portion 81c abuts the outer peripheral surface of the first support column 101A. 81 d of 1st contact surfaces are comprised by the circular surface extended in the circumferential direction of 101 A of 1st support|pillars.

Further, an insertion hole PA into which a wedge member provided on the scaffolding member is inserted from above is formed in the first upper plate portion 81b so as to penetrate in the vertical direction. In this embodiment, the first holding member 81 is provided with two insertion holes PA spaced apart from each other in the circumferential direction of the first strut 101A. The number of insertion holes PA is not particularly limited, and only one may be provided in the first holding member 81 .

A part of each insertion hole PA in the circumferential direction is open by opening to the first contact surface 81d. A first opening opened in the first contact surface 81d is denoted by reference numeral 81e. A width W1 (shown in FIG. 10) of the first support 101A in the circumferential direction at the opening of the first opening 81e of the first contact surface 81d (described in detail later) is corresponds to dimension B (shown in FIG. 2).

The second holding member 82 includes a second vertical plate portion 82a formed so as to surround the first support column 101A, and a second vertical plate portion 82a protruding from the upper portion of the second vertical plate portion 82a in a direction approaching the outer peripheral surface of the first support column 101A. It has two upper plate portions 82b and a second lower plate portion 82c (shown in FIG. 11) projecting from the lower portion of the second vertical plate portion 82a in a direction approaching the outer peripheral surface of the first column 101A.

With the pocket clamp 80 attached to the first strut 101A, the second vertical plate portion 82a is arranged to face the outer peripheral surface of the first strut 101A with a predetermined gap therebetween. A second abutment surface 82d formed at the protruding direction tip portions of the plate portion 82b and the second lower plate portion 82c abuts the outer peripheral surface of the first support column 101A. 82 d of 2nd contact surfaces are comprised by the circular surface extended in the circumferential direction of 101 A of 1st support|pillars.

Further, an insertion hole PA into which a wedge member provided on the scaffolding member is inserted from above is formed in the second upper plate portion 82b so as to penetrate in the vertical direction. In this embodiment, the second holding member 82 is provided with two insertion holes PA spaced apart from each other in the circumferential direction of the first column 101A. The number of insertion holes PA is not particularly limited, and only one may be provided in the second holding member 82 .

A part of each insertion hole PA in the circumferential direction is open by opening to the second contact surface 82d. A second opening opened in the second contact surface 82d is denoted by reference numeral 82e. A width W1 in the circumferential direction of the first support 101A at the opening of the second opening 82e of the second contact surface 82d is the same as the width W1 of the opening of the first opening 81e.

In this embodiment, two insertion holes PA are formed in the first holding member 81 and two insertion holes PA are formed in the second holding member 82, so that the pocket clamp 80 has a total of four insertion holes PA. will be formed. These four insertion holes PA are arranged at equal intervals in the circumferential direction of the first strut 101A, for example, at the same intervals as the intervals between the four through holes 101b shown in FIG. 3A. If there are two insertion holes PA, they are arranged 180 degrees apart in the circumferential direction of the first support 101A. Also, only one insertion hole PA may be provided in the pocket clamp 80 .

The first clamping member 81 and the second clamping member 82 move relative to each other between an open state (unclamped state) shown in FIGS. 10 and 11 and a closed state (clamped state) shown in FIGS. rotatable. A bolt 84 rotatably supported by a bolt support shaft 85 parallel to the connecting shaft 83 is provided on the tip side of the second holding member 82 . On the other hand, a locking plate 81e having a notch 81f (shown in FIG. 8) into which a bolt 84 can be inserted in the radial direction is provided on the distal end side of the first holding member 81. As shown in FIG.

When attaching the pocket clamp 80, first, the pocket clamp 80 is opened and the post 101A is arranged between the first holding member 81 and the second holding member 82, and then the first holding member 81 and the second holding member 81 are placed. By rotating the member 82 relatively around the connecting shaft 83 , the first holding member 81 and the second holding member 82 pinch the column 101</b>A in the radial direction. By rotating the bolt 84 around the bolt support shaft 85 and inserting it into the notch 81f and then tightening the nut 86, the first clamping member 81 and the second clamping member 82 firmly support the support 101A in the radial direction. The pocket clamp 80 is fixed to the strut 101A by clamping it.

Next, the mark portion 110 of the first strut 101A will be described with reference to FIG. The mark portion 110 is a reference portion for attaching the pocket clamp 80, and the pocket clamp 80 can be positioned at a predetermined position on the first post 101A by the mark portion 110. As shown in FIG. The marking portion 110 is provided on the outer peripheral surface of the first support 101A. and a linear second linear mark portion 110b extending in the longitudinal direction (vertical direction) of the first support 101A. The second linear mark portion 110b extends downward from the center portion of the first support column 101A in the circumferential direction of the first linear mark portion 110a, but may extend upward or may extend in both directions. good. The second linear mark portion 110b may be omitted, and the mark portion 110 may be composed only of the first linear mark portion 110a. The first linear mark portion 110a may be intermittent in the circumferential direction of the first support 101A.

The first linear mark portion 110a and the second linear mark portion 110b may be formed by, for example, coloring the outer peripheral surface of the first support 101A, or may be formed by recessing the outer peripheral surface of the first support 101A. It may be configured by recessing or recessing. Various paints such as spray paints and paints applied with a brush can be used to color the outer peripheral surface of the first support column 101A. The first linear mark portion 110a and the second linear mark portion 110b are formed by recessing the outer peripheral surface of the first support 101A into grooves, thin lines such as scribed lines, and lines formed by cutting. etc. When coloring the outer peripheral surface of the first support 101A, the color should be a color different from the color of the metal material forming the first support 101A, for example, a conspicuous color such as white, red, blue, yellow, or black. is preferred.

Moreover, the mark part 110 may be stamped on the outer peripheral surface of the first support 101A. As a method of marking, for example, a method of forming a visually identifiable mark portion 110 by irradiating the outer peripheral surface of the first support 101A with a laser beam to provide an extremely shallow recess in the outer peripheral surface of the first support 101A. can be mentioned. The recesses thus formed may be colored. By imprinting, the mark portion 110 is less likely to disappear due to friction with other members or aging. Moreover, even if the stamped portion becomes rusted, the function of the mark portion 110 is not impaired, so the pocket clamp 80 can be accurately positioned over a long period of time.

The first linear mark portion 110a is provided so as to be arranged within the opening of the first opening portion 81e or the opening of the second opening portion 82e of the pocket clamp 80. As shown in FIG. The width W1 (shown in FIG. 9) of the first opening 81e corresponds to the circumferential dimension B (shown in FIG. 2) of the first support 101A in the first linear mark portion 110a. Specifically, the width W1 of the opening of the first opening 81e and the dimension B of the first linear mark portion 110a can be set to be the same.

Also, the first linear mark portion 110a is arranged on an extended surface obtained by extending the upper surface of the first holding member 81. As shown in FIG. That is, with the pocket clamp 80 attached to the first support 101A, the upper surface of the first holding member 81 is substantially horizontal. Therefore, the extended surface of the upper surface of the first holding member 81 is substantially horizontal, and at least part of the first linear mark portion 110a is arranged on this horizontal extended surface. The upper edge portion of the first linear mark portion 110a may be arranged on the extended surface, or the lower edge portion of the first linear mark portion 110a may be arranged.

In addition, the vertical dimension A of the first linear mark portion 110a may be any dimension that allows the first linear mark portion 110a to be visually recognized, and may be, for example, 0.1 mm or more. It can be 0 mm or more, 2.0 mm or more, or 3.0 mm or more. The upper limit of the width of the first linear mark portion 110a can be, for example, 10.0 mm or less, 5.0 mm or less, or 3.0 mm or less. If the dimension A of the first linear mark portion 110a is lengthened, the allowable range of misalignment of the pocket clamp 80 may be widened.

A plurality of first linear mark portions 110a can be provided on one first column 101A. The plurality of first linear mark portions 110a can be provided at intervals in the longitudinal direction of the first support 101A. It is not limited to these. The circumferential positions of the plurality of first linear mark portions 110a are set to be the same.

The width of the second linear mark portion 110b (the circumferential dimension of the first support 101A) may be the same as the vertical dimension B of the first linear mark portion 110a, or may be shorter than the dimension B. can be longer. The length of the second linear mark portion 110b can also be set arbitrarily.

The mark portion 110 is not limited to a linear shape, and may be, for example, a circular shape or various polygonal shapes. Also, the mark portion 110 may be composed of characters, symbols, or the like. Further, when there are a plurality of mark portions 110 provided on one post 101A, they may all have the same shape or different shapes.

(Mounting method of pocket clamp 80)
Next, a method for attaching the pocket clamp 80 will be described. First, the pocket clamp 80 is opened as shown in FIG. After that, as shown in FIG. 11, the pocket clamp 80 is arranged so that the first strut 101A is positioned between the first clamping member 81 and the second clamping member . Then, the first holding member 81 and the second holding member 82 are relatively rotated in a direction in which the first holding member 81 and the second holding member 82 approach each other, and then the first upper plate portion 81b and the first holding member 81b are rotated. The first contact surface 81d of the lower plate portion 81c and the second contact surfaces 82d of the second upper plate portion 82b and the second lower plate portion 82c are placed against the outer peripheral surface of the first support column 101A. They are brought into contact with each other from one side and the other side in the radial direction of 101A.

At this time, for example, the first linear mark portion 110a is arranged in the opening of the first opening portion 81e of the first contact surface 81d to position the pocket clamp 80 on the first support column 101A. More specifically, the pocket clamp 80 is rotated in the circumferential direction so that one edge in the width direction of the first opening 81e and one edge in the longitudinal direction of the first linear mark portion 110a are aligned. Rotate. When the edges on one side match each other, the width W1 of the opening is the same as the dimension B, so the other edge in the width direction of the opening of the first opening 81e and the longitudinal direction of the first linear mark portion 110a. It coincides with the other edge. Thus, the circumferential position of the pocket clamp 80 is determined. Also, the position of the pocket clamp 80 in the height direction is determined so that the first linear mark portion 110a is arranged on the extended surface of the upper surface of the first clamping member 81 . This completes the pocket clamp 80 positioning process. It should be noted that the second opening 82e that opens to the second contact surface 82d may be used for positioning.

After positioning the pocket clamp 80, the step of fastening the first clamping member 81 and the second clamping member 82 is performed. Specifically, the bolt 84 is rotated around the bolt support shaft 85 and inserted into the notch 81f. Then, the nut 86 of the pocket clamp 80 is tightened. As a result, the first contact surface 81d of the first upper plate portion 81b and the first lower plate portion 81c and the second contact surface 82d of the second upper plate portion 82b and the second lower plate portion 82c form the first support column. The pocket clamp 80 is firmly attached to the first post 101A by making strong contact with the outer peripheral surface of 101A.

The pocket clamp 80 may be positioned while the nut 86 is loosely tightened and temporarily fixed. For example, the nut 86 is tightened to such an extent that the pocket clamp 80 does not drop due to gravity, the position of the pocket clamp 80 is adjusted by hitting the pocket clamp 80 with a tool or the like, and then the nut 86 is tightened.

Further, for example, when the pocket clamp 80 is attached to the first post 101A using the second first linear mark portion 110a from the bottom of the first post 101A, the second post 101B also has the second from the bottom. Another pocket clamp 80 can be attached using the first linear marking portion 110a. As a result, the height of the pocket clamp 80 attached to the first support 101A and that of the pocket clamp 80 attached to the second support 101B can be matched, and the direction of the insertion hole PA of both pocket clamps 80 can be adjusted. can be matched. Therefore, a cloth material or the like can be horizontally hung over the first support 101A and the second support 101B.

(Action and effect of the embodiment)
As described above, according to this embodiment, a part of the insertion hole PA in the circumferential direction is open to the contact surfaces 81d and 82d of the pocket clamp 80, and the first post 101A is provided in this opening. Since the mark portion 110 can be arranged and the width W1 of the opening of the contact surfaces 81d and 82d corresponds to the dimension B of the mark portion 110, the mounting position of the pocket clamp 80 to the first support 101A can be determined at the work site. can be easily and accurately determined.

(Embodiment 2)
13 to 15 show a clamp 1 according to Embodiment 2 of the present invention. The clamp 1 according to the second embodiment differs from the pocket clamp 80 according to the first embodiment in the shapes of the first holding member 10 and the second holding member 20 and the number of insertion holes 11b and 21b. Other configurations are the same as those of the first embodiment. A specific configuration of the clamp 1 according to the second embodiment will be described below.

The clamp 1 includes a first clamping member 10 and a second clamping member 20 that clamp the first strut 101A in the radial direction, a connecting member 30 that rotatably connects the first clamping member 10 and the second clamping member 20, A fastening member 40 for fastening the first holding member 10 and the second holding member 20 is provided.

The first holding member 10 has a first plate member 11 , a base end bracket 12 and a vertical plate portion 14 , and the first plate member 11 has the base end bracket 12 and the vertical plate portion 14 . Fixed. The first plate member 11, the base-end bracket 12, and the vertical plate portion 14 are made of, for example, steel plates. Only one first plate member 11 is provided on the first holding member 10 .

The first plate member 11 is formed so as to extend in the radial direction of the first support 101A when attached to the first support 101A. It is constructed with high rigidity so that it is hardly deformed by fastening force. A first contact surface 11a that contacts the outer peripheral surface of the first support 101A is formed to extend in an arc on the side of the first plate member 11 that contacts the outer peripheral surface of the first support 101A. Although one insertion hole 11b is formed in the first plate member 11, the number of the insertion holes 11b may be two or more. A part of the insertion hole 11b in the circumferential direction opens to the first contact surface 11a. A first opening opening in the first contact surface 11a is denoted by reference numeral 11c. A circumferential width W1 (shown in FIG. 14) of the first support 101A at the opening of the first opening 11c corresponds to the circumferential dimension of the first support 101A at the mark portion 110, as in the first embodiment. there is Since only one first plate member 11 is provided, the contact surface pressure of the first plate member 11 against the column 200 can be sufficiently increased. Width W1 may be narrower than shown.

A base-side bracket 12 is fixed to the base-side edge of the first plate member 11 . The base end bracket 12 is formed by bending a plate member thinner than the first plate member 11 . The base-side bracket 12 includes an upper plate portion 12a that extends along the base-side upper surface of the second plate member 21 that constitutes the second holding member 20, and a base-side lower surface that extends along the base-side lower surface of the second plate member 21. and a connecting plate portion 12c extending from the edge of the upper plate portion 12a to the edge of the lower plate portion and connecting the upper plate portion 12a and the lower plate portion. there is The connecting plate portion 12c is fixed to the base end side edge portion of the first plate member 11 by welding or the like. The base end side of the second plate member 21 is inserted between the upper plate portion 12a and the lower plate portion and connected by a connecting member 30, which will be described later.

On the other hand, a vertical plate member 14 formed thinner than the first plate member 11 is provided at the tip of the first plate member 11 . The vertical plate member 14 is fixed to the tip portion of the first plate member 11 by welding or the like, and extends vertically from the tip portion of the first plate member 11 . The upper portion of the vertical plate member 14 extends above the upper surface of the first plate member 11 , and the lower portion of the vertical plate member 14 extends below the lower surface of the first plate member 11 . Further, the vertical plate member 14 protrudes radially outward from the tip portion of the first plate member 11 .

As shown in FIG. 13, the vertical plate member 14 is formed with a shaft insertion notch 14a for inserting a fastening shaft 41, which will be described later. The notch 14 a for inserting the shaft portion is open toward the distal end side of the vertical plate member 14 . An upper bent portion 14b and a lower bent portion 14c are formed at the distal end portion of the vertical plate member 14 above and below the shaft portion insertion notch portion 14a, respectively. The upper bent portion 14b and the lower bent portion 14c are bent in a direction away from the second holding member 20 in use. Due to the formation of the upper bent portion 14b and the lower bent portion 14c, the nut 42 in the fastened state to be described later engages the upper bent portion 14b and the lower bent portion 14c, and the fastening shaft portion 41 becomes the notch portion for inserting the shaft portion. It becomes difficult to escape from 14a.

The second holding member 20 has a single second plate member 21 and a tip end bracket 22 , and the tip end bracket 22 is fixed to the second plate member 21 . The second plate member 11 and the tip bracket 12 are made of, for example, steel plates. Only one second plate member 21 is provided on the second holding member 20 . The first plate member 11 and the second plate member 21 are arranged at the same height.

Further, on the side of the second plate member 21 that contacts the outer peripheral surface of the first support 101A, a second contact surface 21a that contacts the outer peripheral surface of the first support 101A is formed to extend in an arc shape. The second plate member 21 may be formed with one or more insertion holes 21b. A part of the insertion hole 21b in the circumferential direction opens to the second contact surface 21a. A second opening opening in the second contact surface 21a is denoted by reference numeral 21c. The circumferential width W1 (shown in FIG. 14) of the first support 101A at the opening of the second opening 21c corresponds to the circumferential dimension of the first support 101A at the mark portion 110, as in the first embodiment. there is

As shown in FIG. 14, the insertion hole 11b of the first clamping member 10 and the insertion hole 21b of the second clamping member 20 are symmetrical about the axis C of the first support 101A. are placed. Also, the central portion of the width W1 of the opening of the insertion hole 11b of the first holding member 10 and the central portion of the width W1 of the opening of the insertion hole 21b of the second holding member 20 extend in the radial direction of the first support 101A. They are located on the same straight line D. This straight line D is an imaginary line extending radially through the axis C of the first strut 101A.

A tip-side bracket 22 is fixed to the tip-side edge of the second plate member 21 . The tip side bracket 22 is formed by bending a plate member thinner than the second plate member 21 . The tip side bracket 22 is a connecting plate that extends from an upper plate portion 22a, a lower plate portion 22b, and an edge portion of the upper plate portion 22a to an edge portion of the lower plate portion 22b to connect the upper plate portion 22a and the lower plate portion 22b. and a portion 22c. The connecting plate portion 22c is fixed to the edge portion of the second plate member 21 on the tip side by welding or the like.

The connecting member 30 can be configured by, for example, a shaft made of a metal round bar or the like, and is mounted so as to penetrate the base end side of the second plate member 21 of the second holding member 20 in the vertical direction. An intermediate insertion hole (not shown) through which the vertical intermediate portion of the connecting member 30 is inserted is formed on the base end side of the second plate member 21 . Further, the upper end portion of the connecting member 30 passes through the upper plate portion 12 a of the base end bracket 12 , and the lower end portion of the connecting member 30 passes through the lower plate portion of the base end bracket 12 .

The connecting member 30 is rotatable. Therefore, as shown in FIG. 15, for example, the first holding member 10 is fixed and the second holding member 20 is rotated around the connecting member 30, or the second holding member 20 is fixed, It becomes possible to rotate the first holding member 10 around the connecting member 30 . That is, the base end side of the first holding member 10 and the base end side of the second holding member 20 are connected by the connecting member 30, and in this connected state, the front end side of the first holding member 10 and the second holding member are connected. 20 are rotatable in a direction in which they move toward and away from each other.

An upper retaining ring 31 is fitted to the upper end portion of the connecting member 30 . A lower snap ring (not shown) is fitted to the lower end of the connecting member 30 . As a result, the connecting member 30 does not drop off from the first holding member 10 and the second holding member 20 .

The fastening member 40 includes at least a fastening shaft portion 41, a nut 42, a support shaft 43, an upper retaining ring 44 and a lower retaining ring (not shown). As shown in FIG. 13, a large diameter portion 41a is formed at the proximal end portion of the fastening shaft portion 41. As shown in FIG. A portion of the fastening shaft portion 41 other than the large-diameter portion 41a is composed of a threaded rod having a thread groove continuously formed on the outer peripheral surface thereof, and can be composed of, for example, the shaft portion of a bolt. The nut 42 is a member that is screwed onto the fastening shaft portion 41 . A flange portion 42 a of the nut 42 abuts on the peripheral edge portion of the shaft portion insertion notch portion 14 a of the vertical plate portion 14 .

The support shaft 43 is a member for supporting the large-diameter portion 41 a of the fastening shaft portion 41 so as to be rotatable with respect to the distal end side of the second holding member 20 . The support shaft 43 is made of a round bar member extending vertically in the same manner as the connecting member 30 described above. A vertical intermediate portion of the support shaft 43 vertically penetrates the large diameter portion 41a of the fastening shaft portion 41, so that the support shaft 43 and the large diameter portion 41a of the fastening shaft portion 41 are relatively rotatable. It's becoming The upper end portion of the support shaft 43 penetrates the upper plate portion 22a of the tip-side bracket 22 and protrudes upward from the upper surface of the upper plate portion 22a. ing. On the other hand, the lower end of the support shaft 43 penetrates the lower plate portion 22b of the tip end bracket 22 and protrudes downward from the lower surface of the lower plate portion 22b. not shown) is fitted. The support shaft 43 and the distal bracket 22 are relatively rotatable.

By rotating the fastening shaft portion 41, as shown in FIG. It is possible to switch to a state in which the portion 41 is pulled out from the axial portion insertion notch portion 14 a of the vertical plate member 14 .

In the second embodiment, when the clamp 1 is attached to the first post 101A, the second opening 11c of the first contact surface 11a or the second opening 21c of the second contact surface 21a is inserted into the second opening 11c. Since the clamp 1 can be positioned on the first strut 101A by arranging the one-linear mark portion 110a, the same effects as in the first embodiment can be obtained.

The above-described embodiments are merely examples in all respects and should not be construed in a restrictive manner. Furthermore, all modifications and changes within the equivalent range of claims are within the scope of the present invention.

INDUSTRIAL APPLICABILITY As described above, the temporary scaffolding according to the present invention can be used, for example, when forming scaffoldings for workers at various building construction sites and civil engineering construction sites.

1, 80 Clamps 11a, 81d First contact surfaces 11c, 81e First opening 101A First support 110 Marking portion 110a First linear marking portion 110b Second linear marking portion

TECHNICAL FIELD The present invention relates to a temporary scaffolding constructed at construction sites of various buildings, civil engineering work sites, etc., and a method of attaching clamps to posts.

2. Description of the Related Art Temporary scaffolding is conventionally constructed at construction sites of various buildings and civil engineering work sites according to the content of the work. A general temporary scaffolding, for example, as disclosed in Patent Document 1, is composed of a plurality of posts, cloth materials that connect these posts, and scaffolding boards that are stretched over the cloth materials to form a work floor. It is configured.

When constructing a temporary scaffold it is possible to use pocket clamps, for example as disclosed in US Pat. The pocket clamp includes a pair of clamping members that clamp the outer peripheral surface of the post from both sides in the radial direction, a connecting shaft that connects the pair of clamping members so that they can be opened and closed, and a pair of clamping members that are held together when the pair of clamping members are in a closed state. and a fastening member to be fastened. When attaching the pocket clamp to the strut, first, the pair of clamping members are opened, and then the strut is arranged between the clamping members. After that, both clamping members are fastened by a fastening member.

Japanese Patent No. 6444009 Japanese Patent No. 6505340

By the way, since the pockets are welded to the conventional strut at regular intervals in the vertical direction, it is not easy to stretch the cloth material horizontally by fixing the cloth material to the pocket numbered from the bottom, for example. However, with the pocket clamps of Patent Literatures 1 and 2, it may be difficult to horizontally hang the cloth material.

That is, since the pocket clamps of Patent Documents 1 and 2 can freely change the mounting position with respect to the support, for example, when fixing the cloth material, the height of the cloth material can be set to an arbitrary height to improve the degree of freedom in constructing the scaffold. On the other hand, it becomes difficult to match the height of the pocket clamp attached to the left strut and the pocket clamp attached to the right strut, for example. In order to solve this problem, for example, it is conceivable to match the heights of the left and right pocket clamps while measuring the height at the work site.

On the other hand, even if the height of the pocket clamp is freely changed, it is sufficient that the height can be changed at a certain pitch, so there is little need for stepless change.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and its object is to make it possible to easily determine the mounting position of a clamp having an insertion hole into which a wedge member is inserted, at the work site when the clamp is mounted on a post. It is to be

In order to achieve the above object, according to a first aspect of the present disclosure, there is provided a post, a scaffolding component, and an insertion hole into which a wedge member provided on the scaffolding component is inserted from above, and is attached to the post. Temporary scaffolding with clamps and clamps can be assumed. The clamp includes a first clamping member and a second clamping member that contact an outer peripheral surface of the column from one side and the other side in the radial direction of the column to clamp the column in the radial direction, The clamping member is formed with a contact surface that contacts the outer peripheral surface of the support so as to extend in the circumferential direction of the support. , the outer peripheral surface of the post is provided with a marking portion that serves as a reference when the clamp is attached by stamping so that it can be arranged in the opening of the contact surface, and the support is provided in the circumferential direction of the opening of the contact surface. The width of is set to be the same as the dimension in the circumferential direction of the support in the mark portion.

According to this configuration, when the clamp is attached to the support, the position of the clamp relative to the support is determined at a predetermined position by arranging and attaching the clamp with reference to the mark provided on the support. When positioning the clamp at a predetermined position, since a part of the insertion hole in the circumferential direction is open to the abutment surface of the clamp, the mark portion of the strut may be arranged in this opening. At this time, since the width of the opening of the abutment surface is the same as the size of the mark portion, the position of the clamp in the circumferential direction can be determined easily and accurately. Also, when the clamp is positioned so that the mark of the post is positioned within the opening, the height of the clamp is also accurately determined.

In the second aspect of the present disclosure, the marking portion includes a linear first linear marking portion extending in the circumferential direction of the support, and the width of the support in the circumferential direction at the opening of the contact surface corresponds to the circumferential dimension of the support in the first linear mark portion.

According to this configuration, by providing the first linear mark portion extending in the circumferential direction of the column, it becomes easy to grasp the mounting position of the clamp in the height direction. In addition, since the dimension of the first linear mark portion corresponds to the width of the opening of the contact surface, the position in the circumferential direction is also determined accurately.

In a third aspect of the present disclosure, the first linear mark portion is arranged on an extended surface obtained by extending the upper surface of the first holding member.

According to this configuration, the height of the clamp can be easily determined by arranging the first linear mark portion on the extended surface of the upper surface of the first clamping member.

In a fourth aspect of the present disclosure, the marking portion includes a linear second linear marking portion extending in the longitudinal direction of the column from the center portion in the circumferential direction of the column in the first linear marking portion. there is

According to this configuration, by providing the second linear mark portion extending in the longitudinal direction of the temporary scaffold support, it becomes easy to grasp the mounting position of the clamp in the circumferential direction.

According to a fifth aspect of the present disclosure, the mark portion is engraved on the outer peripheral surface of the support by irradiating a laser beam . According to this configuration, the mark portion is less likely to disappear due to friction with other members or aging. Moreover, even if the stamped portion rusts, the function as the mark portion is not impaired, so the clamp can be positioned accurately over a long period of time.

In a sixth aspect of the present disclosure, a temporary scaffold comprising a support, a scaffold component, and a clamp attached to the support, having an insertion hole into which a wedge member provided on the scaffold component is inserted from above. can assume a clamp attachment method for attaching the clamp to the strut. A method of attaching the clamp includes a step of bringing a first clamping member and a second clamping member of the clamp into contact with the outer peripheral surface of the support from one side and the other side in the radial direction of the support, respectively; An opening for opening a part of the insertion hole in the circumferential direction is formed in the contact surface of the clamping member that contacts the outer peripheral surface of the support, and the width of the support in the circumferential direction at the opening of the contact surface. is set to be the same as the dimension in the circumferential direction of the post provided by stamping on the outer peripheral surface of the post, and the mark is placed in the opening of the contact surface to position the clamp on the post. and fastening the first clamping member and the second clamping member after positioning the clamp.

As described above, a part of the insertion hole in the circumferential direction is open to the contact surface of the clamp, and the mark portion provided on the support can be arranged in this opening, and the width of the opening of the contact surface can be adjusted. is made the same as the size of the mark portion, it is possible to easily and accurately determine the mounting position of the clamp to the support at the work site.

It is a perspective view showing a part of temporary scaffolding according to Embodiment 1 of the present invention. Fig. 10 is a side view of the intermediate portion of the strut; It is a side view near the upper part of the support|pillar for temporary scaffolds to which the joint pin is not attached. It is a side view which shows a part of support|pillar provided with an automatic locking mechanism. Fig. 10 is a side view showing a case where a single tube to which a joint pin is attached is used as a single tube type strut; Fig. 2 is a side view of a single tube joint; FIG. 4 is a side view of a first joint that connects the lower single-tube type column and the upper temporary scaffolding column; FIG. 4 is a side view of a second joint connecting the lower temporary scaffolding support and the upper single-tube type support; Fig. 3 is a perspective view of a pocket clamp; Fig. 2 is a plan view of the pocket clamp; Fig. 3 is a plan view of the pocket clamp in its open state; It is a perspective view explaining the attachment point of a pocket clamp. Fig. 10 is a perspective view of a post with a pocket clamp attached; Fig. 10 is a perspective view of a clamp used in the temporary scaffolding according to Embodiment 2 of the present invention; 9 equivalent view of a clamp according to Embodiment 2. FIG. 10 equivalent view of a clamp according to Embodiment 2. FIG.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail based on the drawings. It should be noted that the following description of preferred embodiments is essentially merely illustrative, and is not intended to limit the invention, its applications, or its uses.

(Embodiment 1)
FIG. 1 is a perspective view showing a part of a wedge binding type temporary scaffolding A according to Embodiment 1 of the present invention. Temporary scaffolding A is constructed at various construction sites and civil engineering work sites, depending on the type of work and the shape and structure of the building. At the construction site of a building having such a structure, it may be constructed along the outer wall surface of the building.

The temporary scaffolding A includes posts 101A, 101B, 101C, . 105. The number of these members is not particularly limited, and varies according to the scale of the temporary scaffold A.

The temporary scaffolding supports 101A, 101B, 101C, . . . are all the same. For the sake of convenience, the temporary scaffolding column 101A will be called the first column, the temporary scaffolding column 101B will be called the second column, and the temporary scaffolding column 101C will be called the third column. Since the first to third columns 101A, 101B, and 101C are the same, the following description will describe the first column 101A in detail. The first to third struts 101A, 101B, 101C may have different lengths.

The jack base 102, the cloth material 103, the scaffolding board 104, and the temporary scaffolding handrail 105 are scaffolding constituent members that constitute a part of the temporary scaffolding A. As shown in FIG. The cloth member 103 is a member that extends horizontally and connects the first to third columns 101A, 101B, and 101C. Wedge-shaped members (wedge members) protruding downward are provided at both ends of the cloth member 103, although not shown. It is possible to connect. The scaffold board 104 is a member that is installed in a state of being stretched over the cloth material 103 and constitutes a scaffold on which the worker stands. The temporary scaffolding handrail 105 is a member that is connected to the first to third pillars 101A, 101B, and 101C and prevents the worker from falling onto the scaffolding board 104. FIG. The temporary scaffolding handrail 105 is also provided with a wedge member (not shown), and the temporary scaffolding handrail 105 can be attached to the first to third pillars 101A, 101B, and 101C using this wedge member. It has become. Scaffolding components also include cloth frames (not shown), skirting boards (not shown), wall ties (not shown), stairs (not shown), etc., which are also required. It can be attached to the first to third struts 101A, 101B, and 101C using wedge members according to the requirements.

The first column 101A is made of, for example, a metal pipe having a circular cross section, and is installed in a posture in which the axis is vertical. The upper part of the jack base 102 is inserted in the lower part of the 1st support|pillar 101A. The lower portion of the first strut 101A and the upper portion of the jack base 102 are engaged with each other so as not to cause circumferential displacement.

FIG. 2 is a side view of the vertical intermediate portion of the first support 101A, and a mark portion 110, which will be described later, is provided on the outer peripheral surface of the first support 101A. FIG. 3A shows the upper part of the first support 101A and its vicinity. A cylindrical small-diameter portion 101a having a smaller diameter than the intermediate portion of the first support 101A protrudes upward from the upper portion of the first support 101A. Four through holes 101b penetrating the peripheral wall of the small-diameter portion 101a in the thickness direction are provided at equal intervals (90° intervals) in the circumferential direction in a portion near the upper end portion of the small-diameter portion 101a. All four through holes 101b have the same circular shape and the same diameter. Two opposing through holes 101b, 101b form one set, and two sets are provided in this example.

As shown in FIG. 3B, an automatic lock mechanism 101c is provided below the first support column 101A. The automatic locking mechanism 101c has a locking member 101d. The lock member 101d can be switched between a lock position protruding radially inward from the inner peripheral surface of the first support column 101A and a non-lock position retracted from the lock position. This locking member 101d can be operated by an operating member 101e. For example, if the operating member 101e is kept in the posture shown in FIG. 3B, the locking member 101d can be brought to the locked position. On the other hand, if the operating member 101e is rotated from the posture shown in FIG. be able to. The structure of such an automatic locking mechanism 101c is conventionally known in the field of the wedge binding type temporary scaffold A.

The first strut 101A may be composed of a member other than the member having the small diameter portion 101a described above. An example is shown in FIG. The first strut 101A shown in FIG. 4 is a single-tube type strut made of a single tube, and has the same outer diameter from the top end to the bottom end. The four through-holes 101b described above are also formed in the first strut 101A, which is a single-tube type strut. A joint pin P can be attached to the two opposing through holes 101b, 101b. The joint pin P includes a cylindrical main body P1 and heads P2 formed at both ends of the main body P1, and is made of a high-strength member such as metal. A body portion P1 of the joint pin P is inserted through one pair of through holes 101b, 101b, and extends continuously across both radial direction end portions of the body portion P1. Head P2 is arranged to protrude outward from through hole 101b and has an outer diameter larger than the diameter of through hole 101b. A peripheral portion of the head P2 contacts the outer peripheral surface of the small diameter portion 101a to prevent the pin P from coming off.

FIG. 5 shows a single-tube joint 200 that connects the single-tube type first struts 101A. That is, when the height of the temporary scaffolding A is not enough with one first support column 101A, a plurality of first support columns 101A are connected and used. A single-tube joint 200 can be used when connecting a plurality of single-tube type first struts 101A. The single pipe joint 200 includes an upper tubular portion 201 , a lower tubular portion 202 and an intermediate tubular portion 203 . These cylindrical portions 201, 202, and 203 are cylindrical. The lower end portion of the upper tubular portion 201 is connected to the upper end portion of the intermediate tubular portion 203 , and the upper end portion of the lower tubular portion 202 is connected to the lower end portion of the intermediate tubular portion 203 . The outer diameter of the upper cylindrical portion 201 is set slightly smaller than the inner diameter of the single-tube type first strut 101A shown in FIG. can do. The outer diameter of the lower tubular portion 202 is set to be the same as the outer diameter of the upper tubular portion 201 . Therefore, the lower cylindrical portion 202 can be inserted into the upper portion of the single-tube type first strut 101A.

Two upper slits 201a are formed in the upper cylindrical portion 201 so as to be spaced from each other in the circumferential direction. The upper slit 201 a is open at the upper end of the upper tubular portion 201 , extends downward from there, and then bends in the circumferential direction of the upper tubular portion 201 . When connecting the upper first support column 101A to the single pipe joint 200, the upper cylindrical portion 201 is inserted into the lower portion of the first support column 101A. When the main body P1 reaches the lower part of the upper slit 201a, the first support 101A and the single pipe joint 200 are relatively rotated, and the main body P1 is moved upward. By inserting it into the bent portion of the slit 201a, the single pipe joint 200 and the upper first strut 101A can be connected so as not to separate.

A lower slit 202a similar to that of the upper tubular portion 201 is formed in the lower tubular portion 202 as well. The lower slit 202a is open at the lower end of the lower cylindrical portion 202, extends upward from there, and then bends in the circumferential direction of the lower cylindrical portion 202. As shown in FIG. As a result, the single pipe joint 200 and the lower first strut 101A can be connected together so as not to separate.

The outer diameter of the intermediate cylindrical portion 203 is set to be substantially the same as the outer diameter of the single-tube type first strut 101A. Therefore, the intermediate cylindrical portion 203 is interposed between the lower end portion of the first support column 101A on the upper side and the upper end portion of the first support column 101A on the lower side.

FIG. 6 is a side view of the first joint 300 that connects the single-tube type first column 101A positioned below and the first column 101A positioned above. The lower portion of the first joint 300 is composed of a lower tubular portion 302 which is the same as the lower tubular portion 202 shown in FIG. 5. The lower tubular portion 302 is formed with a lower slit 302a. The upper portion of the first joint 300 is composed of a cylindrical upper cylindrical portion 301 having substantially the same diameter as the lower portion. Four through holes 301a are provided in the upper cylindrical portion 301 at regular intervals in the circumferential direction. A lower end portion of the upper tubular portion 301 and an upper end portion of the lower tubular portion 302 are connected.

The lower single-tube type first strut 101 A (shown in FIG. 4 ) can be connected to the lower tubular portion 302 of the first joint 300 . On the other hand, since an automatic locking mechanism 101c as shown in FIG. 3B is provided at the lower part of the first support 101A located above, the upper cylindrical part 301 of the first joint 300 is attached to the lower part of the first support 101A. When the first strut 101A and the first joint 300 are rotated relative to each other after insertion, the lock member 101d in the lock position enters one of the through holes 301a of the upper cylindrical portion 301, thereby moving upward. The first strut 101A and the first joint 300 can be connected so as not to separate.

FIG. 7 is a side view of the second joint 400 that connects the lower first column 101A and the upper single-tube type first column 101A. The upper part of the second joint 400 is composed of an upper tubular portion 401 which is the same as the upper tubular portion 201 shown in FIG. The lower portion 402 of the second joint 400 is configured in the same manner as the portion provided with the automatic locking mechanism 101c shown in FIG. 3B, and includes an automatic locking mechanism 402d including a locking member 402d and an operating member 402e.

The upper single-tube type first strut 101 A (shown in FIG. 4 ) can be connected to the upper tubular portion 401 of the second joint 400 . On the other hand, for the first support 101A located below, the upper part of the support without the joint pin P (shown in FIG. 3A) is inserted into the lower cylindrical portion 402 of the second joint 400, and then the first support 101A and the second support 101A are separated from each other. When the joint 400 and the joint 400 are rotated relative to each other, the lock member 402d in the lock position enters the through hole 101b of one of the first support columns 101A, thereby locking the first support column 101A and the second joint 400 positioned below. It can be connected so as not to detach.

As described above, by using the single pipe joint 200 shown in FIG. 5, the first joint 300 shown in FIG. 6, and the second joint 400 shown in FIG. The first struts 101A and 101A can be connected in a circumferentially aligned state, and in the connected state, relative rotation between the first struts 101A located above and the first struts 101A located below can be prevented. Further, by using the first joint 300 shown in FIG. 6 and the second joint 400 shown in FIG. 7, even if the structures of the upper and lower first struts 101A are different from each other, they can be connected.

Next, the configuration of the pocket clamp 80 will be described with reference to FIGS. 8 to 11. FIG. The pocket clamps 80 used in the temporary scaffolding A of Embodiment 1 are all the same, but may be different. The pocket clamp 80 includes a first clamping member 81 and a second clamping member 82 that clamp the first strut 101A from both sides in the radial direction, a connecting shaft 83, a bolt 84, a bolt support shaft 85, and a nut 86. there is Base ends of the first holding member 81 and the second holding member 82 are rotatably connected to each other by a connecting shaft 83 extending in the vertical direction.

The first clamping member 81 and the second clamping member 82 are formed by pressing a steel plate or the like, for example. The first clamping member 81 includes a first vertical plate portion 81a formed to surround the first support column 101A, and a first vertical plate portion 81a protruding from the upper portion of the first vertical plate portion 81a in a direction approaching the outer peripheral surface of the first support column 101A. 1 upper plate portion 81b, and a first lower plate portion 81c (shown in FIG. 11) projecting from the lower portion of the first vertical plate portion 81a in a direction approaching the outer peripheral surface of the first column 101A.

With the pocket clamp 80 attached to the first strut 101A, the first vertical plate portion 81a is arranged to face the outer peripheral surface of the first strut 101A with a predetermined gap therebetween. A first abutment surface 81d formed at the protruding direction tip portions of the plate portion 81b and the first lower plate portion 81c abuts the outer peripheral surface of the first support column 101A. 81 d of 1st contact surfaces are comprised by the circular surface extended in the circumferential direction of 101 A of 1st support|pillars.

Further, an insertion hole PA into which a wedge member provided on the scaffolding member is inserted from above is formed in the first upper plate portion 81b so as to penetrate in the vertical direction. In this embodiment, the first holding member 81 is provided with two insertion holes PA spaced apart from each other in the circumferential direction of the first strut 101A. The number of insertion holes PA is not particularly limited, and only one may be provided in the first holding member 81 .

A part of each insertion hole PA in the circumferential direction is open by opening to the first contact surface 81d. A first opening opened in the first contact surface 81d is denoted by reference numeral 81e. A width W1 (shown in FIG. 10) of the first support 101A in the circumferential direction at the opening of the first opening 81e of the first contact surface 81d (described in detail later) is corresponds to dimension B (shown in FIG. 2).

The second holding member 82 includes a second vertical plate portion 82a formed so as to surround the first support column 101A, and a second vertical plate portion 82a protruding from the upper portion of the second vertical plate portion 82a in a direction approaching the outer peripheral surface of the first support column 101A. It has two upper plate portions 82b and a second lower plate portion 82c (shown in FIG. 11) projecting from the lower portion of the second vertical plate portion 82a in a direction approaching the outer peripheral surface of the first column 101A.

With the pocket clamp 80 attached to the first strut 101A, the second vertical plate portion 82a is arranged to face the outer peripheral surface of the first strut 101A with a predetermined gap therebetween. A second abutment surface 82d formed at the protruding direction tip portions of the plate portion 82b and the second lower plate portion 82c abuts the outer peripheral surface of the first support column 101A. 82 d of 2nd contact surfaces are comprised by the circular surface extended in the circumferential direction of 101 A of 1st support|pillars.

Further, an insertion hole PA into which a wedge member provided on the scaffolding member is inserted from above is formed in the second upper plate portion 82b so as to penetrate in the vertical direction. In this embodiment, the second holding member 82 is provided with two insertion holes PA spaced apart from each other in the circumferential direction of the first column 101A. The number of insertion holes PA is not particularly limited, and only one may be provided in the second holding member 82 .

A part of each insertion hole PA in the circumferential direction is open by opening to the second contact surface 82d. A second opening opened in the second contact surface 82d is denoted by reference numeral 82e. A width W1 in the circumferential direction of the first support 101A at the opening of the second opening 82e of the second contact surface 82d is the same as the width W1 of the opening of the first opening 81e.

In this embodiment, two insertion holes PA are formed in the first holding member 81 and two insertion holes PA are formed in the second holding member 82, so that the pocket clamp 80 has a total of four insertion holes PA. will be formed. These four insertion holes PA are arranged at equal intervals in the circumferential direction of the first strut 101A, for example, at the same intervals as the intervals between the four through holes 101b shown in FIG. 3A. If there are two insertion holes PA, they are arranged 180 degrees apart in the circumferential direction of the first support 101A. Also, only one insertion hole PA may be provided in the pocket clamp 80 .

The first clamping member 81 and the second clamping member 82 move relative to each other between an open state (unclamped state) shown in FIGS. 10 and 11 and a closed state (clamped state) shown in FIGS. rotatable. A bolt 84 rotatably supported by a bolt support shaft 85 parallel to the connecting shaft 83 is provided on the tip side of the second holding member 82 . On the other hand, a locking plate 81e having a notch 81f (shown in FIG. 8) into which a bolt 84 can be inserted in the radial direction is provided on the distal end side of the first holding member 81. As shown in FIG.

When attaching the pocket clamp 80, first, the pocket clamp 80 is opened and the post 101A is arranged between the first holding member 81 and the second holding member 82, and then the first holding member 81 and the second holding member 81 are placed. By rotating the member 82 relatively around the connecting shaft 83 , the first holding member 81 and the second holding member 82 pinch the column 101</b>A in the radial direction. By rotating the bolt 84 around the bolt support shaft 85 and inserting it into the notch 81f and then tightening the nut 86, the first clamping member 81 and the second clamping member 82 firmly support the support 101A in the radial direction. The pocket clamp 80 is fixed to the strut 101A by clamping it.

Next, the mark portion 110 of the first strut 101A will be described with reference to FIG. The mark portion 110 is a reference portion for attaching the pocket clamp 80, and the pocket clamp 80 can be positioned at a predetermined position on the first post 101A by the mark portion 110. As shown in FIG. The marking portion 110 is provided on the outer peripheral surface of the first support 101A. and a linear second linear mark portion 110b extending in the longitudinal direction (vertical direction) of the first support 101A. The second linear mark portion 110b extends downward from the center portion of the first support column 101A in the circumferential direction of the first linear mark portion 110a, but may extend upward or may extend in both directions. good. The second linear mark portion 110b may be omitted, and the mark portion 110 may be composed only of the first linear mark portion 110a. The first linear mark portion 110a may be intermittent in the circumferential direction of the first support 101A.

The first linear mark portion 110a and the second linear mark portion 110b may be formed by, for example, coloring the outer peripheral surface of the first support 101A, or may be formed by recessing the outer peripheral surface of the first support 101A. It may be configured by recessing or recessing. Various paints such as spray paints and paints applied with a brush can be used to color the outer peripheral surface of the first support column 101A. The first linear mark portion 110a and the second linear mark portion 110b are formed by recessing the outer peripheral surface of the first support 101A into grooves, thin lines such as scribed lines, and lines formed by cutting. etc. When coloring the outer peripheral surface of the first support 101A, the color should be a color different from the color of the metal material forming the first support 101A, for example, a conspicuous color such as white, red, blue, yellow, or black. is preferred.

Moreover, the mark part 110 may be stamped on the outer peripheral surface of the first support 101A. As a method of marking, for example, a method of forming a visually identifiable mark portion 110 by irradiating the outer peripheral surface of the first support 101A with a laser beam to provide an extremely shallow recess in the outer peripheral surface of the first support 101A. can be mentioned. The recesses thus formed may be colored. By imprinting, the mark portion 110 is less likely to disappear due to friction with other members or aging. Moreover, even if the stamped portion becomes rusted, the function of the mark portion 110 is not impaired, so the pocket clamp 80 can be accurately positioned over a long period of time.

The first linear mark portion 110a is provided so as to be arranged within the opening of the first opening portion 81e or the opening of the second opening portion 82e of the pocket clamp 80. As shown in FIG. The width W1 (shown in FIG. 9) of the first opening 81e corresponds to the circumferential dimension B (shown in FIG. 2) of the first support 101A in the first linear mark portion 110a. Specifically, the width W1 of the opening of the first opening 81e and the dimension B of the first linear mark portion 110a can be set to be the same.

Also, the first linear mark portion 110a is arranged on an extended surface obtained by extending the upper surface of the first holding member 81. As shown in FIG. That is, with the pocket clamp 80 attached to the first support 101A, the upper surface of the first holding member 81 is substantially horizontal. Therefore, the extended surface of the upper surface of the first holding member 81 is substantially horizontal, and at least part of the first linear mark portion 110a is arranged on this horizontal extended surface. The upper edge portion of the first linear mark portion 110a may be arranged on the extended surface, or the lower edge portion of the first linear mark portion 110a may be arranged.

In addition, the vertical dimension A of the first linear mark portion 110a may be any dimension that allows the first linear mark portion 110a to be visually recognized, and may be, for example, 0.1 mm or more. It can be 0 mm or more, 2.0 mm or more, or 3.0 mm or more. The upper limit of the width of the first linear mark portion 110a can be, for example, 10.0 mm or less, 5.0 mm or less, or 3.0 mm or less. If the dimension A of the first linear mark portion 110a is lengthened, the allowable range of misalignment of the pocket clamp 80 may be widened.

A plurality of first linear mark portions 110a can be provided on one first column 101A. The plurality of first linear mark portions 110a can be provided at intervals in the longitudinal direction of the first support 101A. It is not limited to these. The circumferential positions of the plurality of first linear mark portions 110a are set to be the same.

The width of the second linear mark portion 110b (the circumferential dimension of the first support 101A) may be the same as the vertical dimension B of the first linear mark portion 110a, or may be shorter than the dimension B. can be longer. The length of the second linear mark portion 110b can also be set arbitrarily.

The mark portion 110 is not limited to a linear shape, and may be, for example, a circular shape or various polygonal shapes. Also, the mark portion 110 may be composed of characters, symbols, or the like. Further, when there are a plurality of mark portions 110 provided on one post 101A, they may all have the same shape or different shapes.

(Mounting method of pocket clamp 80)
Next, a method for attaching the pocket clamp 80 will be described. First, the pocket clamp 80 is opened as shown in FIG. After that, as shown in FIG. 11, the pocket clamp 80 is arranged so that the first strut 101A is positioned between the first clamping member 81 and the second clamping member . Then, the first holding member 81 and the second holding member 82 are relatively rotated in a direction in which the first holding member 81 and the second holding member 82 approach each other, and then the first upper plate portion 81b and the first holding member 81b are rotated. The first contact surface 81d of the lower plate portion 81c and the second contact surfaces 82d of the second upper plate portion 82b and the second lower plate portion 82c are placed against the outer peripheral surface of the first support column 101A. They are brought into contact with each other from one side and the other side in the radial direction of 101A.

At this time, for example, the first linear mark portion 110a is arranged in the opening of the first opening portion 81e of the first contact surface 81d to position the pocket clamp 80 on the first support column 101A. More specifically, the pocket clamp 80 is rotated in the circumferential direction so that one edge in the width direction of the first opening 81e and one edge in the longitudinal direction of the first linear mark portion 110a are aligned. Rotate. When the edges on one side match each other, the width W1 of the opening is the same as the dimension B, so the other edge in the width direction of the opening of the first opening 81e and the longitudinal direction of the first linear mark portion 110a. It coincides with the other edge. Thus, the circumferential position of the pocket clamp 80 is determined. Also, the position of the pocket clamp 80 in the height direction is determined so that the first linear mark portion 110a is arranged on the extended surface of the upper surface of the first clamping member 81 . This completes the pocket clamp 80 positioning process. It should be noted that the second opening 82e that opens to the second contact surface 82d may be used for positioning.

After positioning the pocket clamp 80, the step of fastening the first clamping member 81 and the second clamping member 82 is performed. Specifically, the bolt 84 is rotated around the bolt support shaft 85 and inserted into the notch 81f. Then, the nut 86 of the pocket clamp 80 is tightened. As a result, the first contact surface 81d of the first upper plate portion 81b and the first lower plate portion 81c and the second contact surface 82d of the second upper plate portion 82b and the second lower plate portion 82c form the first support column. The pocket clamp 80 is firmly attached to the first post 101A by making strong contact with the outer peripheral surface of 101A.

The pocket clamp 80 may be positioned while the nut 86 is loosely tightened and temporarily fixed. For example, the nut 86 is tightened to such an extent that the pocket clamp 80 does not drop due to gravity, the position of the pocket clamp 80 is adjusted by hitting the pocket clamp 80 with a tool or the like, and then the nut 86 is tightened.

Further, for example, when the pocket clamp 80 is attached to the first post 101A using the second first linear mark portion 110a from the bottom of the first post 101A, the second post 101B also has the second from the bottom. Another pocket clamp 80 can be attached using the first linear marking portion 110a. As a result, the height of the pocket clamp 80 attached to the first support 101A and that of the pocket clamp 80 attached to the second support 101B can be matched, and the direction of the insertion hole PA of both pocket clamps 80 can be adjusted. can be matched. Therefore, a cloth material or the like can be horizontally hung over the first support 101A and the second support 101B.

(Action and effect of the embodiment)
As described above, according to this embodiment, a part of the insertion hole PA in the circumferential direction is open to the contact surfaces 81d and 82d of the pocket clamp 80, and the first post 101A is provided in this opening. Since the mark portion 110 can be arranged and the width W1 of the opening of the contact surfaces 81d and 82d corresponds to the dimension B of the mark portion 110, the mounting position of the pocket clamp 80 to the first support 101A can be determined at the work site. can be easily and accurately determined.

(Embodiment 2)
13 to 15 show a clamp 1 according to Embodiment 2 of the present invention. The clamp 1 according to the second embodiment differs from the pocket clamp 80 according to the first embodiment in the shapes of the first holding member 10 and the second holding member 20 and the number of insertion holes 11b and 21b. Other configurations are the same as those of the first embodiment. A specific configuration of the clamp 1 according to the second embodiment will be described below.

The clamp 1 includes a first clamping member 10 and a second clamping member 20 that clamp the first strut 101A in the radial direction, a connecting member 30 that rotatably connects the first clamping member 10 and the second clamping member 20, A fastening member 40 for fastening the first holding member 10 and the second holding member 20 is provided.

The first holding member 10 has a first plate member 11 , a base end bracket 12 and a vertical plate portion 14 , and the first plate member 11 has the base end bracket 12 and the vertical plate portion 14 . Fixed. The first plate member 11, the base-end bracket 12, and the vertical plate portion 14 are made of, for example, steel plates. Only one first plate member 11 is provided on the first holding member 10 .

The first plate member 11 is formed so as to extend in the radial direction of the first support 101A when attached to the first support 101A. It is constructed with high rigidity so that it is hardly deformed by fastening force. A first contact surface 11a that contacts the outer peripheral surface of the first support 101A is formed to extend in an arc on the side of the first plate member 11 that contacts the outer peripheral surface of the first support 101A. Although one insertion hole 11b is formed in the first plate member 11, the number of the insertion holes 11b may be two or more. A part of the insertion hole 11b in the circumferential direction opens to the first contact surface 11a. A first opening opening in the first contact surface 11a is denoted by reference numeral 11c. A circumferential width W1 (shown in FIG. 14) of the first support 101A at the opening of the first opening 11c corresponds to the circumferential dimension of the first support 101A at the mark portion 110, as in the first embodiment. there is Since only one first plate member 11 is provided, the contact surface pressure of the first plate member 11 against the column 200 can be sufficiently increased. Width W1 may be narrower than shown.

A base-side bracket 12 is fixed to the base-side edge of the first plate member 11 . The base end bracket 12 is formed by bending a plate member thinner than the first plate member 11 . The base-side bracket 12 includes an upper plate portion 12a that extends along the base-side upper surface of the second plate member 21 that constitutes the second holding member 20, and a base-side lower surface that extends along the base-side lower surface of the second plate member 21. and a connecting plate portion 12c extending from the edge of the upper plate portion 12a to the edge of the lower plate portion and connecting the upper plate portion 12a and the lower plate portion. there is The connecting plate portion 12c is fixed to the base end side edge portion of the first plate member 11 by welding or the like. The base end side of the second plate member 21 is inserted between the upper plate portion 12a and the lower plate portion and connected by a connecting member 30, which will be described later.

On the other hand, a vertical plate member 14 formed thinner than the first plate member 11 is provided at the tip of the first plate member 11 . The vertical plate member 14 is fixed to the tip portion of the first plate member 11 by welding or the like, and extends vertically from the tip portion of the first plate member 11 . The upper portion of the vertical plate member 14 extends above the upper surface of the first plate member 11 , and the lower portion of the vertical plate member 14 extends below the lower surface of the first plate member 11 . Further, the vertical plate member 14 protrudes radially outward from the tip portion of the first plate member 11 .

As shown in FIG. 13, the vertical plate member 14 is formed with a shaft insertion notch 14a for inserting a fastening shaft 41, which will be described later. The notch 14 a for inserting the shaft portion is open toward the distal end side of the vertical plate member 14 . An upper bent portion 14b and a lower bent portion 14c are formed at the distal end portion of the vertical plate member 14 above and below the shaft portion insertion notch portion 14a, respectively. The upper bent portion 14b and the lower bent portion 14c are bent in a direction away from the second holding member 20 in use. Due to the formation of the upper bent portion 14b and the lower bent portion 14c, the nut 42 in the fastened state to be described later engages the upper bent portion 14b and the lower bent portion 14c, and the fastening shaft portion 41 becomes the notch portion for inserting the shaft portion. It becomes difficult to escape from 14a.

The second holding member 20 has a single second plate member 21 and a tip end bracket 22 , and the tip end bracket 22 is fixed to the second plate member 21 . The second plate member 11 and the tip bracket 12 are made of, for example, steel plates. Only one second plate member 21 is provided on the second holding member 20 . The first plate member 11 and the second plate member 21 are arranged at the same height.

Further, on the side of the second plate member 21 that contacts the outer peripheral surface of the first support 101A, a second contact surface 21a that contacts the outer peripheral surface of the first support 101A is formed to extend in an arc shape. The second plate member 21 may be formed with one or more insertion holes 21b. A part of the insertion hole 21b in the circumferential direction opens to the second contact surface 21a. A second opening opening in the second contact surface 21a is denoted by reference numeral 21c. The circumferential width W1 (shown in FIG. 14) of the first support 101A at the opening of the second opening 21c corresponds to the circumferential dimension of the first support 101A at the mark portion 110, as in the first embodiment. there is

As shown in FIG. 14, the insertion hole 11b of the first clamping member 10 and the insertion hole 21b of the second clamping member 20 are symmetrical about the axis C of the first support 101A. are placed. Also, the central portion of the width W1 of the opening of the insertion hole 11b of the first holding member 10 and the central portion of the width W1 of the opening of the insertion hole 21b of the second holding member 20 extend in the radial direction of the first support 101A. They are located on the same straight line D. This straight line D is an imaginary line extending radially through the axis C of the first strut 101A.

A tip-side bracket 22 is fixed to the tip-side edge of the second plate member 21 . The tip side bracket 22 is formed by bending a plate member thinner than the second plate member 21 . The tip side bracket 22 is a connecting plate that extends from an upper plate portion 22a, a lower plate portion 22b, and an edge portion of the upper plate portion 22a to an edge portion of the lower plate portion 22b to connect the upper plate portion 22a and the lower plate portion 22b. and a portion 22c. The connecting plate portion 22c is fixed to the edge portion of the second plate member 21 on the tip side by welding or the like.

The connecting member 30 can be configured by, for example, a shaft made of a metal round bar or the like, and is mounted so as to penetrate the base end side of the second plate member 21 of the second holding member 20 in the vertical direction. An intermediate insertion hole (not shown) through which the vertical intermediate portion of the connecting member 30 is inserted is formed on the base end side of the second plate member 21 . Further, the upper end portion of the connecting member 30 passes through the upper plate portion 12 a of the base end bracket 12 , and the lower end portion of the connecting member 30 passes through the lower plate portion of the base end bracket 12 .

The connecting member 30 is rotatable. Therefore, as shown in FIG. 15, for example, the first holding member 10 is fixed and the second holding member 20 is rotated around the connecting member 30, or the second holding member 20 is fixed, It becomes possible to rotate the first holding member 10 around the connecting member 30 . That is, the base end side of the first holding member 10 and the base end side of the second holding member 20 are connected by the connecting member 30, and in this connected state, the front end side of the first holding member 10 and the second holding member are connected. 20 are rotatable in a direction in which they move toward and away from each other.

An upper retaining ring 31 is fitted to the upper end portion of the connecting member 30 . A lower snap ring (not shown) is fitted to the lower end of the connecting member 30 . As a result, the connecting member 30 does not drop off from the first holding member 10 and the second holding member 20 .

The fastening member 40 includes at least a fastening shaft portion 41, a nut 42, a support shaft 43, an upper retaining ring 44 and a lower retaining ring (not shown). As shown in FIG. 13, a large diameter portion 41a is formed at the proximal end portion of the fastening shaft portion 41. As shown in FIG. A portion of the fastening shaft portion 41 other than the large-diameter portion 41a is composed of a threaded rod having a thread groove continuously formed on the outer peripheral surface thereof, and can be composed of, for example, the shaft portion of a bolt. The nut 42 is a member that is screwed onto the fastening shaft portion 41 . A flange portion 42 a of the nut 42 abuts on the peripheral edge portion of the shaft portion insertion notch portion 14 a of the vertical plate portion 14 .

The support shaft 43 is a member for supporting the large-diameter portion 41 a of the fastening shaft portion 41 so as to be rotatable with respect to the distal end side of the second holding member 20 . The support shaft 43 is made of a round bar member extending vertically in the same manner as the connecting member 30 described above. A vertical intermediate portion of the support shaft 43 vertically penetrates the large diameter portion 41a of the fastening shaft portion 41, so that the support shaft 43 and the large diameter portion 41a of the fastening shaft portion 41 are relatively rotatable. It's becoming The upper end portion of the support shaft 43 penetrates the upper plate portion 22a of the tip-side bracket 22 and protrudes upward from the upper surface of the upper plate portion 22a. ing. On the other hand, the lower end of the support shaft 43 penetrates the lower plate portion 22b of the tip end bracket 22 and protrudes downward from the lower surface of the lower plate portion 22b. not shown) is fitted. The support shaft 43 and the distal bracket 22 are relatively rotatable.

By rotating the fastening shaft portion 41, as shown in FIG. It is possible to switch to a state in which the portion 41 is pulled out from the axial portion insertion notch portion 14 a of the vertical plate member 14 .

In the second embodiment, when the clamp 1 is attached to the first post 101A, the second opening 11c of the first contact surface 11a or the second opening 21c of the second contact surface 21a is inserted into the second opening 11c. Since the clamp 1 can be positioned on the first strut 101A by arranging the one-linear mark portion 110a, the same effects as in the first embodiment can be obtained.

The above-described embodiments are merely examples in all respects and should not be construed in a restrictive manner. Furthermore, all modifications and changes within the equivalent range of claims are within the scope of the present invention.

INDUSTRIAL APPLICABILITY As described above, the temporary scaffolding according to the present invention can be used, for example, when forming scaffoldings for workers at various building construction sites and civil engineering construction sites.

1, 80 Clamps 11a, 81d First contact surfaces 11c, 81e First opening 101A First support 110 Marking portion 110a First linear marking portion 110b Second linear marking portion

TECHNICAL FIELD The present invention relates to a temporary scaffolding constructed at construction sites of various buildings, civil engineering work sites, etc., and a method of attaching clamps to posts.

2. Description of the Related Art Temporary scaffolding is conventionally constructed at construction sites of various buildings and civil engineering work sites according to the content of the work. A general temporary scaffolding, for example, as disclosed in Patent Document 1, is composed of a plurality of posts, cloth materials that connect these posts, and scaffolding boards that are stretched over the cloth materials to form a work floor. It is configured.

When constructing a temporary scaffold it is possible to use pocket clamps, for example as disclosed in US Pat. The pocket clamp includes a pair of clamping members that clamp the outer peripheral surface of the post from both sides in the radial direction, a connecting shaft that connects the pair of clamping members so that they can be opened and closed, and a pair of clamping members that are held together when the pair of clamping members are in a closed state. and a fastening member to be fastened. When attaching the pocket clamp to the strut, first, the pair of clamping members are opened, and then the strut is arranged between the clamping members. After that, both clamping members are fastened by a fastening member.

Japanese Patent No. 6444009 Japanese Patent No. 6505340

By the way, since the pockets are welded to the conventional strut at regular intervals in the vertical direction, it is not easy to stretch the cloth material horizontally by fixing the cloth material to the pocket numbered from the bottom, for example. However, with the pocket clamps of Patent Literatures 1 and 2, it may be difficult to horizontally hang the cloth material.

That is, since the pocket clamps of Patent Documents 1 and 2 can freely change the mounting position with respect to the support, for example, when fixing the cloth material, the height of the cloth material can be set to an arbitrary height to improve the degree of freedom in constructing the scaffold. On the other hand, it becomes difficult to match the height of the pocket clamp attached to the left strut and the pocket clamp attached to the right strut, for example. In order to solve this problem, for example, it is conceivable to match the heights of the left and right pocket clamps while measuring the height at the work site.

On the other hand, even if the height of the pocket clamp is freely changed, it is sufficient that the height can be changed at a certain pitch, so there is little need for stepless change.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and its object is to make it possible to easily determine the mounting position of a clamp having an insertion hole into which a wedge member is inserted, at the work site when the clamp is mounted on a post. It is to be

In order to achieve the above object, according to a first aspect of the present disclosure, a scaffolding member having vertically extending columns, a scaffolding component, and an insertion hole into which a wedge member provided in the scaffolding component is inserted from above, A temporary scaffold with clamps attached to the stanchions can be assumed. The clamp includes a first clamping member and a second clamping member that contact an outer peripheral surface of the column from one side and the other side in the radial direction of the column to clamp the column in the radial direction, The clamping member is formed with a contact surface that contacts the outer peripheral surface of the support so as to extend in the circumferential direction of the support. , the outer peripheral surface of the post is provided with a marking portion that serves as a reference when the clamp is attached by stamping so that it can be arranged in the opening of the contact surface, and the support is provided in the circumferential direction of the opening of the contact surface. The width of is set to be the same as the dimension of the support in the circumferential direction of the mark portion, and the mark portion is arranged on an extended surface extending from the upper surface of the first holding member .

According to this configuration, when the clamp is attached to the support, the position of the clamp relative to the support is determined at a predetermined position by arranging and attaching the clamp with reference to the mark provided on the support. When positioning the clamp at a predetermined position, since a part of the insertion hole in the circumferential direction is open to the abutment surface of the clamp, the mark portion of the strut may be arranged in this opening. At this time, since the width of the opening of the abutment surface is the same as the size of the mark portion, the position of the clamp in the circumferential direction can be determined easily and accurately. Also, when the clamp is positioned so that the mark of the post is positioned within the opening, the height of the clamp is also accurately determined.

In the second aspect of the present disclosure, the marking portion includes a linear first linear marking portion extending in the circumferential direction of the support, and the width of the support in the circumferential direction at the opening of the contact surface corresponds to the circumferential dimension of the support in the first linear mark portion.

According to this configuration, by providing the first linear mark portion extending in the circumferential direction of the column, it becomes easy to grasp the mounting position of the clamp in the height direction. In addition, since the dimension of the first linear mark portion corresponds to the width of the opening of the contact surface, the position in the circumferential direction is also determined accurately.

In a third aspect of the present disclosure, the first linear mark portion is arranged on an extended surface obtained by extending the upper surface of the first holding member.

According to this configuration, the height of the clamp can be easily determined by arranging the first linear mark portion on the extended surface of the upper surface of the first clamping member.

In a fourth aspect of the present disclosure, the marking portion includes a linear second linear marking portion extending in the longitudinal direction of the column from the center portion in the circumferential direction of the column in the first linear marking portion. there is

According to this configuration, by providing the second linear mark portion extending in the longitudinal direction of the temporary scaffold support, it becomes easy to grasp the mounting position of the clamp in the circumferential direction.

According to a fifth aspect of the present disclosure, the mark portion is engraved on the outer peripheral surface of the support by irradiating a laser beam. According to this configuration, the mark portion is less likely to disappear due to friction with other members or aging. Moreover, even if the stamped portion rusts, the function as the mark portion is not impaired, so the clamp can be positioned accurately over a long period of time.

In a sixth aspect of the present disclosure, a vertically extending column, a scaffolding component, and a clamp having an insertion hole into which a wedge member provided on the scaffolding component is inserted from above and attached to the column. When constructing the temporary scaffolding provided, a method of attaching the clamps to attach the clamps to the posts can be assumed. A method of attaching the clamp includes a step of bringing a first clamping member and a second clamping member of the clamp into contact with the outer peripheral surface of the support from one side and the other side in the radial direction of the support, respectively; An opening for opening a part of the insertion hole in the circumferential direction is formed in the contact surface of the clamping member that contacts the outer peripheral surface of the support, and the width of the support in the circumferential direction at the opening of the contact surface. is set to be the same as the dimension in the circumferential direction of the post provided by stamping on the outer peripheral surface of the post, and the mark is arranged in the opening of the contact surface, and the first holding member positioning the clamp on the post by arranging the mark portion on an extended surface obtained by extending the upper surface; and fastening the first clamping member and the second clamping member after positioning the clamp. I have.

As described above, a part of the insertion hole in the circumferential direction is open to the contact surface of the clamp, and the mark portion provided on the support can be arranged in this opening, and the width of the opening of the contact surface can be adjusted. is made the same as the size of the mark portion, it is possible to easily and accurately determine the mounting position of the clamp to the support at the work site.

It is a perspective view showing a part of temporary scaffolding according to Embodiment 1 of the present invention. FIG. 11 is a side view of the intermediate portion of the strut; It is a side view near the upper part of the support|pillar for temporary scaffolds to which the joint pin is not attached. It is a side view which shows a part of support|pillar provided with an automatic locking mechanism. Fig. 10 is a side view showing a case where a single tube to which a joint pin is attached is used as a single tube type strut; FIG. 10 is a side view of a single tube joint; FIG. 4 is a side view of a first joint that connects the lower single-tube type column and the upper temporary scaffolding column; FIG. 4 is a side view of a second joint connecting the lower temporary scaffolding support and the upper single-tube type support; Fig. 3 is a perspective view of a pocket clamp; Fig. 2 is a plan view of the pocket clamp; Fig. 3 is a plan view of the pocket clamp in its open state; It is a perspective view explaining the attachment point of a pocket clamp. Fig. 10 is a perspective view of a post with a pocket clamp attached; Fig. 10 is a perspective view of a clamp used in the temporary scaffolding according to Embodiment 2 of the present invention; 9 equivalent view of a clamp according to Embodiment 2. FIG. 10 equivalent view of a clamp according to Embodiment 2. FIG.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail based on the drawings. It should be noted that the following description of preferred embodiments is essentially merely illustrative, and is not intended to limit the invention, its applications, or its uses.

(Embodiment 1)
FIG. 1 is a perspective view showing a part of a wedge binding type temporary scaffolding A according to Embodiment 1 of the present invention. Temporary scaffolding A is constructed at various construction sites and civil engineering work sites, depending on the type of work and the shape and structure of the building. At the construction site of a building having such a structure, it may be constructed along the outer wall surface of the building.

The temporary scaffolding A includes posts 101A, 101B, 101C, . 105. The number of these members is not particularly limited, and varies according to the scale of the temporary scaffold A.

The temporary scaffolding supports 101A, 101B, 101C, . . . are all the same. For the sake of convenience, the temporary scaffolding column 101A will be called the first column, the temporary scaffolding column 101B will be called the second column, and the temporary scaffolding column 101C will be called the third column. Since the first to third columns 101A, 101B, and 101C are the same, the following description will describe the first column 101A in detail. The first to third struts 101A, 101B, 101C may have different lengths.

The jack base 102, the cloth material 103, the scaffolding board 104, and the temporary scaffolding handrail 105 are scaffolding constituent members that constitute a part of the temporary scaffolding A. As shown in FIG. The cloth member 103 is a member that extends horizontally and connects the first to third columns 101A, 101B, and 101C. Wedge-shaped members (wedge members) protruding downward are provided at both ends of the cloth member 103, although not shown. It is possible to connect. The scaffold board 104 is a member that is installed in a state of being stretched over the cloth material 103 and constitutes a scaffold on which the worker stands. The temporary scaffolding handrail 105 is a member that is connected to the first to third pillars 101A, 101B, and 101C and prevents the worker from falling onto the scaffolding board 104. FIG. The temporary scaffolding handrail 105 is also provided with a wedge member (not shown), and the temporary scaffolding handrail 105 can be attached to the first to third pillars 101A, 101B, and 101C using this wedge member. It has become. Scaffolding components also include cloth frames (not shown), skirting boards (not shown), wall ties (not shown), stairs (not shown), etc., which are also required. It can be attached to the first to third struts 101A, 101B, and 101C using wedge members according to the requirements.

The first column 101A is made of, for example, a metal pipe having a circular cross section, and is installed in a posture in which the axis is vertical. The upper part of the jack base 102 is inserted in the lower part of the 1st support|pillar 101A. The lower portion of the first strut 101A and the upper portion of the jack base 102 are engaged with each other so as not to cause circumferential displacement.

FIG. 2 is a side view of the vertical intermediate portion of the first support 101A, and a mark portion 110, which will be described later, is provided on the outer peripheral surface of the first support 101A. FIG. 3A shows the upper part of the first support 101A and its vicinity. A cylindrical small-diameter portion 101a having a smaller diameter than the intermediate portion of the first support 101A protrudes upward from the upper portion of the first support 101A. Four through holes 101b penetrating the peripheral wall of the small-diameter portion 101a in the thickness direction are provided at equal intervals (90° intervals) in the circumferential direction in a portion near the upper end portion of the small-diameter portion 101a. All four through holes 101b have the same circular shape and the same diameter. Two opposing through holes 101b, 101b form one set, and two sets are provided in this example.

As shown in FIG. 3B, an automatic lock mechanism 101c is provided below the first support column 101A. The automatic locking mechanism 101c has a locking member 101d. The lock member 101d can be switched between a lock position protruding radially inward from the inner peripheral surface of the first support column 101A and a non-lock position retracted from the lock position. This locking member 101d can be operated by an operating member 101e. For example, if the operating member 101e is kept in the posture shown in FIG. 3B, the locking member 101d can be brought to the locked position. On the other hand, if the operating member 101e is rotated from the posture shown in FIG. be able to. The structure of such an automatic locking mechanism 101c is conventionally known in the field of the wedge binding type temporary scaffold A.

The first strut 101A may be composed of a member other than the member having the small diameter portion 101a described above. An example is shown in FIG. The first strut 101A shown in FIG. 4 is a single-tube type strut made of a single tube, and has the same outer diameter from the top end to the bottom end. The four through-holes 101b described above are also formed in the first strut 101A, which is a single-tube type strut. A joint pin P can be attached to the two opposing through holes 101b, 101b. The joint pin P includes a cylindrical main body P1 and heads P2 formed at both ends of the main body P1, and is made of a high-strength member such as metal. A body portion P1 of the joint pin P is inserted through one pair of through holes 101b, 101b, and extends continuously across both radial direction end portions of the body portion P1. Head P2 is arranged to protrude outward from through hole 101b and has an outer diameter larger than the diameter of through hole 101b. A peripheral portion of the head P2 contacts the outer peripheral surface of the small diameter portion 101a to prevent the pin P from coming off.

FIG. 5 shows a single-tube joint 200 that connects the single-tube type first struts 101A. That is, when the height of the temporary scaffolding A is not enough with one first support column 101A, a plurality of first support columns 101A are connected and used. A single-tube joint 200 can be used when connecting a plurality of single-tube type first struts 101A. The single pipe joint 200 includes an upper tubular portion 201 , a lower tubular portion 202 and an intermediate tubular portion 203 . These cylindrical portions 201, 202, and 203 are cylindrical. The lower end portion of the upper tubular portion 201 is connected to the upper end portion of the intermediate tubular portion 203 , and the upper end portion of the lower tubular portion 202 is connected to the lower end portion of the intermediate tubular portion 203 . The outer diameter of the upper cylindrical portion 201 is set slightly smaller than the inner diameter of the single-tube type first strut 101A shown in FIG. can do. The outer diameter of the lower tubular portion 202 is set to be the same as the outer diameter of the upper tubular portion 201 . Therefore, the lower cylindrical portion 202 can be inserted into the upper portion of the single-tube type first strut 101A.

Two upper slits 201a are formed in the upper cylindrical portion 201 so as to be spaced from each other in the circumferential direction. The upper slit 201 a is open at the upper end of the upper tubular portion 201 , extends downward from there, and then bends in the circumferential direction of the upper tubular portion 201 . When connecting the upper first support column 101A to the single pipe joint 200, the upper cylindrical portion 201 is inserted into the lower portion of the first support column 101A. When the main body P1 reaches the lower part of the upper slit 201a, the first support 101A and the single pipe joint 200 are relatively rotated, and the main body P1 is moved upward. By inserting it into the bent portion of the slit 201a, the single pipe joint 200 and the upper first strut 101A can be connected so as not to separate.

A lower slit 202a similar to that of the upper tubular portion 201 is formed in the lower tubular portion 202 as well. The lower slit 202a is open at the lower end of the lower cylindrical portion 202, extends upward from there, and then bends in the circumferential direction of the lower cylindrical portion 202. As shown in FIG. As a result, the single pipe joint 200 and the lower first strut 101A can be connected together so as not to separate.

The outer diameter of the intermediate cylindrical portion 203 is set to be substantially the same as the outer diameter of the single-tube type first strut 101A. Therefore, the intermediate cylindrical portion 203 is interposed between the lower end portion of the first support column 101A on the upper side and the upper end portion of the first support column 101A on the lower side.

FIG. 6 is a side view of the first joint 300 that connects the single-tube type first column 101A positioned below and the first column 101A positioned above. The lower portion of the first joint 300 is composed of a lower tubular portion 302 which is the same as the lower tubular portion 202 shown in FIG. 5. The lower tubular portion 302 is formed with a lower slit 302a. The upper portion of the first joint 300 is composed of a cylindrical upper cylindrical portion 301 having substantially the same diameter as the lower portion. Four through holes 301a are provided in the upper cylindrical portion 301 at regular intervals in the circumferential direction. A lower end portion of the upper tubular portion 301 and an upper end portion of the lower tubular portion 302 are connected.

The lower single-tube type first strut 101 A (shown in FIG. 4 ) can be connected to the lower tubular portion 302 of the first joint 300 . On the other hand, since an automatic locking mechanism 101c as shown in FIG. 3B is provided at the lower part of the first support 101A located above, the upper cylindrical part 301 of the first joint 300 is attached to the lower part of the first support 101A. When the first strut 101A and the first joint 300 are rotated relative to each other after insertion, the lock member 101d in the lock position enters one of the through holes 301a of the upper cylindrical portion 301, thereby moving upward. The first strut 101A and the first joint 300 can be connected so as not to separate.

FIG. 7 is a side view of the second joint 400 that connects the lower first column 101A and the upper single-tube type first column 101A. The upper part of the second joint 400 is composed of an upper tubular portion 401 which is the same as the upper tubular portion 201 shown in FIG. The lower portion 402 of the second joint 400 is configured in the same manner as the portion provided with the automatic locking mechanism 101c shown in FIG. 3B, and includes an automatic locking mechanism 402d including a locking member 402d and an operating member 402e.

The upper single-tube type first strut 101 A (shown in FIG. 4 ) can be connected to the upper tubular portion 401 of the second joint 400 . On the other hand, for the first support 101A located below, the upper part of the support without the joint pin P (shown in FIG. 3A) is inserted into the lower cylindrical portion 402 of the second joint 400, and then the first support 101A and the second support 101A are separated from each other. When the joint 400 and the joint 400 are rotated relative to each other, the lock member 402d in the lock position enters the through hole 101b of one of the first support columns 101A, thereby locking the first support column 101A and the second joint 400 positioned below. It can be connected so as not to detach.

As described above, by using the single pipe joint 200 shown in FIG. 5, the first joint 300 shown in FIG. 6, and the second joint 400 shown in FIG. The first struts 101A and 101A can be connected in a circumferentially aligned state, and in the connected state, relative rotation between the first struts 101A located above and the first struts 101A located below can be prevented. Further, by using the first joint 300 shown in FIG. 6 and the second joint 400 shown in FIG. 7, even if the structures of the upper and lower first struts 101A are different from each other, they can be connected.

Next, the configuration of the pocket clamp 80 will be described with reference to FIGS. 8 to 11. FIG. The pocket clamps 80 used in the temporary scaffolding A of Embodiment 1 are all the same, but may be different. The pocket clamp 80 includes a first clamping member 81 and a second clamping member 82 that clamp the first strut 101A from both sides in the radial direction, a connecting shaft 83, a bolt 84, a bolt support shaft 85, and a nut 86. there is Base ends of the first holding member 81 and the second holding member 82 are rotatably connected to each other by a connecting shaft 83 extending in the vertical direction.

The first clamping member 81 and the second clamping member 82 are formed by pressing a steel plate or the like, for example. The first clamping member 81 includes a first vertical plate portion 81a formed to surround the first support column 101A, and a first vertical plate portion 81a protruding from the upper portion of the first vertical plate portion 81a in a direction approaching the outer peripheral surface of the first support column 101A. 1 upper plate portion 81b, and a first lower plate portion 81c (shown in FIG. 11) projecting from the lower portion of the first vertical plate portion 81a in a direction approaching the outer peripheral surface of the first column 101A.

With the pocket clamp 80 attached to the first strut 101A, the first vertical plate portion 81a is arranged to face the outer peripheral surface of the first strut 101A with a predetermined gap therebetween. A first abutment surface 81d formed at the protruding direction tip portions of the plate portion 81b and the first lower plate portion 81c abuts the outer peripheral surface of the first support column 101A. 81 d of 1st contact surfaces are comprised by the circular surface extended in the circumferential direction of 101 A of 1st support|pillars.

Further, an insertion hole PA into which a wedge member provided on the scaffolding member is inserted from above is formed in the first upper plate portion 81b so as to penetrate in the vertical direction. In this embodiment, the first holding member 81 is provided with two insertion holes PA spaced apart from each other in the circumferential direction of the first strut 101A. The number of insertion holes PA is not particularly limited, and only one may be provided in the first holding member 81 .

A part of each insertion hole PA in the circumferential direction is open by opening to the first contact surface 81d. A first opening opened in the first contact surface 81d is denoted by reference numeral 81e. A width W1 (shown in FIG. 10) of the first support 101A in the circumferential direction at the opening of the first opening 81e of the first contact surface 81d (described in detail later) is corresponds to dimension B (shown in FIG. 2).

The second holding member 82 includes a second vertical plate portion 82a formed so as to surround the first support column 101A, and a second vertical plate portion 82a protruding from the upper portion of the second vertical plate portion 82a in a direction approaching the outer peripheral surface of the first support column 101A. It has two upper plate portions 82b and a second lower plate portion 82c (shown in FIG. 11) projecting from the lower portion of the second vertical plate portion 82a in a direction approaching the outer peripheral surface of the first column 101A.

With the pocket clamp 80 attached to the first strut 101A, the second vertical plate portion 82a is arranged to face the outer peripheral surface of the first strut 101A with a predetermined gap therebetween. A second abutment surface 82d formed at the protruding direction tip portions of the plate portion 82b and the second lower plate portion 82c abuts the outer peripheral surface of the first support column 101A. 82 d of 2nd contact surfaces are comprised by the circular surface extended in the circumferential direction of 101 A of 1st support|pillars.

Further, an insertion hole PA into which a wedge member provided on the scaffolding member is inserted from above is formed in the second upper plate portion 82b so as to penetrate in the vertical direction. In this embodiment, the second holding member 82 is provided with two insertion holes PA spaced apart from each other in the circumferential direction of the first column 101A. The number of insertion holes PA is not particularly limited, and only one may be provided in the second holding member 82 .

A part of each insertion hole PA in the circumferential direction is open by opening to the second contact surface 82d. A second opening opened in the second contact surface 82d is denoted by reference numeral 82e. A width W1 in the circumferential direction of the first support 101A at the opening of the second opening 82e of the second contact surface 82d is the same as the width W1 of the opening of the first opening 81e.

In this embodiment, two insertion holes PA are formed in the first holding member 81 and two insertion holes PA are formed in the second holding member 82, so that the pocket clamp 80 has a total of four insertion holes PA. will be formed. These four insertion holes PA are arranged at equal intervals in the circumferential direction of the first strut 101A, for example, at the same intervals as the intervals between the four through holes 101b shown in FIG. 3A. If there are two insertion holes PA, they are arranged 180 degrees apart in the circumferential direction of the first support 101A. Also, only one insertion hole PA may be provided in the pocket clamp 80 .

The first clamping member 81 and the second clamping member 82 move relative to each other between an open state (unclamped state) shown in FIGS. 10 and 11 and a closed state (clamped state) shown in FIGS. rotatable. A bolt 84 rotatably supported by a bolt support shaft 85 parallel to the connecting shaft 83 is provided on the tip side of the second holding member 82 . On the other hand, a locking plate 81e having a notch 81f (shown in FIG. 8) into which a bolt 84 can be inserted in the radial direction is provided on the distal end side of the first holding member 81. As shown in FIG.

When attaching the pocket clamp 80, first, the pocket clamp 80 is opened and the post 101A is arranged between the first holding member 81 and the second holding member 82, and then the first holding member 81 and the second holding member 81 are placed. By rotating the member 82 relatively around the connecting shaft 83 , the first holding member 81 and the second holding member 82 pinch the column 101</b>A in the radial direction. By rotating the bolt 84 around the bolt support shaft 85 and inserting it into the notch 81f and then tightening the nut 86, the first clamping member 81 and the second clamping member 82 firmly support the support 101A in the radial direction. The pocket clamp 80 is fixed to the strut 101A by clamping it.

Next, the mark portion 110 of the first strut 101A will be described with reference to FIG. The mark portion 110 is a reference portion for attaching the pocket clamp 80, and the pocket clamp 80 can be positioned at a predetermined position on the first post 101A by the mark portion 110. As shown in FIG. The marking portion 110 is provided on the outer peripheral surface of the first support 101A. and a linear second linear mark portion 110b extending in the longitudinal direction (vertical direction) of the first support 101A. The second linear mark portion 110b extends downward from the center portion of the first support column 101A in the circumferential direction of the first linear mark portion 110a, but may extend upward or may extend in both directions. good. The second linear mark portion 110b may be omitted, and the mark portion 110 may be composed only of the first linear mark portion 110a. The first linear mark portion 110a may be intermittent in the circumferential direction of the first support 101A.

The first linear mark portion 110a and the second linear mark portion 110b may be formed by, for example, coloring the outer peripheral surface of the first support 101A, or may be formed by recessing the outer peripheral surface of the first support 101A. It may be configured by recessing or recessing. Various paints such as spray paints and paints applied with a brush can be used to color the outer peripheral surface of the first support column 101A. The first linear mark portion 110a and the second linear mark portion 110b are formed by recessing the outer peripheral surface of the first support 101A into grooves, thin lines such as scribed lines, and lines formed by cutting. etc. When coloring the outer peripheral surface of the first support 101A, the color should be a color different from the color of the metal material forming the first support 101A, for example, a conspicuous color such as white, red, blue, yellow, or black. is preferred.

Moreover, the mark part 110 may be stamped on the outer peripheral surface of the first support 101A. As a method of marking, for example, a method of forming a visually identifiable mark portion 110 by irradiating the outer peripheral surface of the first support 101A with a laser beam to provide an extremely shallow recess in the outer peripheral surface of the first support 101A. can be mentioned. The recesses thus formed may be colored. By imprinting, the mark portion 110 is less likely to disappear due to friction with other members or aging. Moreover, even if the stamped portion becomes rusted, the function of the mark portion 110 is not impaired, so the pocket clamp 80 can be accurately positioned over a long period of time.

The first linear mark portion 110a is provided so as to be arranged within the opening of the first opening portion 81e or the opening of the second opening portion 82e of the pocket clamp 80. As shown in FIG. The width W1 (shown in FIG. 9) of the first opening 81e corresponds to the circumferential dimension B (shown in FIG. 2) of the first support 101A in the first linear mark portion 110a. Specifically, the width W1 of the opening of the first opening 81e and the dimension B of the first linear mark portion 110a can be set to be the same.

Also, the first linear mark portion 110a is arranged on an extended surface obtained by extending the upper surface of the first holding member 81. As shown in FIG. That is, with the pocket clamp 80 attached to the first support 101A, the upper surface of the first holding member 81 is substantially horizontal. Therefore, the extended surface of the upper surface of the first holding member 81 is substantially horizontal, and at least part of the first linear mark portion 110a is arranged on this horizontal extended surface. The upper edge portion of the first linear mark portion 110a may be arranged on the extended surface, or the lower edge portion of the first linear mark portion 110a may be arranged.

In addition, the vertical dimension A of the first linear mark portion 110a may be any dimension that allows the first linear mark portion 110a to be visually recognized, and may be, for example, 0.1 mm or more. It can be 0 mm or more, 2.0 mm or more, or 3.0 mm or more. The upper limit of the width of the first linear mark portion 110a can be, for example, 10.0 mm or less, 5.0 mm or less, or 3.0 mm or less. If the dimension A of the first linear mark portion 110a is lengthened, the allowable range of misalignment of the pocket clamp 80 may be widened.

A plurality of first linear mark portions 110a can be provided on one first column 101A. The plurality of first linear mark portions 110a can be provided at intervals in the longitudinal direction of the first support 101A. It is not limited to these. The circumferential positions of the plurality of first linear mark portions 110a are set to be the same.

The width of the second linear mark portion 110b (the circumferential dimension of the first support 101A) may be the same as the vertical dimension B of the first linear mark portion 110a, or may be shorter than the dimension B. can be longer. The length of the second linear mark portion 110b can also be set arbitrarily.

The mark portion 110 is not limited to a linear shape, and may be, for example, a circular shape or various polygonal shapes. Also, the mark portion 110 may be composed of characters, symbols, or the like. Further, when there are a plurality of mark portions 110 provided on one post 101A, they may all have the same shape or different shapes.

(Mounting method of pocket clamp 80)
Next, a method for attaching the pocket clamp 80 will be described. First, the pocket clamp 80 is opened as shown in FIG. After that, as shown in FIG. 11, the pocket clamp 80 is arranged so that the first strut 101A is positioned between the first clamping member 81 and the second clamping member . Then, the first holding member 81 and the second holding member 82 are relatively rotated in a direction in which the first holding member 81 and the second holding member 82 approach each other, and then the first upper plate portion 81b and the first holding member 81b are rotated. The first contact surface 81d of the lower plate portion 81c and the second contact surfaces 82d of the second upper plate portion 82b and the second lower plate portion 82c are placed against the outer peripheral surface of the first support column 101A. They are brought into contact with each other from one side and the other side in the radial direction of 101A.

At this time, for example, the first linear mark portion 110a is arranged in the opening of the first opening portion 81e of the first contact surface 81d to position the pocket clamp 80 on the first support column 101A. More specifically, the pocket clamp 80 is rotated in the circumferential direction so that one edge in the width direction of the first opening 81e and one edge in the longitudinal direction of the first linear mark portion 110a are aligned. Rotate. When the edges on one side match each other, the width W1 of the opening is the same as the dimension B, so the other edge in the width direction of the opening of the first opening 81e and the longitudinal direction of the first linear mark portion 110a. It coincides with the other edge. Thus, the circumferential position of the pocket clamp 80 is determined. Also, the position of the pocket clamp 80 in the height direction is determined so that the first linear mark portion 110a is arranged on the extended surface of the upper surface of the first clamping member 81 . This completes the pocket clamp 80 positioning process. It should be noted that the second opening 82e that opens to the second contact surface 82d may be used for positioning.

After positioning the pocket clamp 80, the step of fastening the first clamping member 81 and the second clamping member 82 is performed. Specifically, the bolt 84 is rotated around the bolt support shaft 85 and inserted into the notch 81f. Then, the nut 86 of the pocket clamp 80 is tightened. As a result, the first contact surface 81d of the first upper plate portion 81b and the first lower plate portion 81c and the second contact surface 82d of the second upper plate portion 82b and the second lower plate portion 82c form the first support column. The pocket clamp 80 is firmly attached to the first post 101A by making strong contact with the outer peripheral surface of 101A.

The pocket clamp 80 may be positioned while the nut 86 is loosely tightened and temporarily fixed. For example, the nut 86 is tightened to such an extent that the pocket clamp 80 does not drop due to gravity, the position of the pocket clamp 80 is adjusted by hitting the pocket clamp 80 with a tool or the like, and then the nut 86 is tightened.

Further, for example, when the pocket clamp 80 is attached to the first post 101A using the second first linear mark portion 110a from the bottom of the first post 101A, the second post 101B also has the second from the bottom. Another pocket clamp 80 can be attached using the first linear marking portion 110a. As a result, the height of the pocket clamp 80 attached to the first support 101A and that of the pocket clamp 80 attached to the second support 101B can be matched, and the direction of the insertion hole PA of both pocket clamps 80 can be adjusted. can be matched. Therefore, a cloth material or the like can be horizontally hung over the first support 101A and the second support 101B.

(Action and effect of the embodiment)
As described above, according to this embodiment, a part of the insertion hole PA in the circumferential direction is open to the contact surfaces 81d and 82d of the pocket clamp 80, and the first post 101A is provided in this opening. Since the mark portion 110 can be arranged and the width W1 of the opening of the contact surfaces 81d and 82d corresponds to the dimension B of the mark portion 110, the mounting position of the pocket clamp 80 to the first support 101A can be determined at the work site. can be easily and accurately determined.

(Embodiment 2)
13 to 15 show a clamp 1 according to Embodiment 2 of the present invention. The clamp 1 according to the second embodiment differs from the pocket clamp 80 according to the first embodiment in the shapes of the first holding member 10 and the second holding member 20 and the number of insertion holes 11b and 21b. Other configurations are the same as those of the first embodiment. A specific configuration of the clamp 1 according to the second embodiment will be described below.

The clamp 1 includes a first clamping member 10 and a second clamping member 20 that clamp the first strut 101A in the radial direction, a connecting member 30 that rotatably connects the first clamping member 10 and the second clamping member 20, A fastening member 40 for fastening the first holding member 10 and the second holding member 20 is provided.

The first holding member 10 has a first plate member 11 , a base end bracket 12 and a vertical plate portion 14 , and the first plate member 11 has the base end bracket 12 and the vertical plate portion 14 . Fixed. The first plate member 11, the base-end bracket 12, and the vertical plate portion 14 are made of, for example, steel plates. Only one first plate member 11 is provided on the first holding member 10 .

The first plate member 11 is formed so as to extend in the radial direction of the first support 101A when attached to the first support 101A. It is constructed with high rigidity so that it is hardly deformed by fastening force. A first contact surface 11a that contacts the outer peripheral surface of the first support 101A is formed to extend in an arc on the side of the first plate member 11 that contacts the outer peripheral surface of the first support 101A. Although one insertion hole 11b is formed in the first plate member 11, the number of the insertion holes 11b may be two or more. A part of the insertion hole 11b in the circumferential direction opens to the first contact surface 11a. A first opening opening in the first contact surface 11a is denoted by reference numeral 11c. A circumferential width W1 (shown in FIG. 14) of the first support 101A at the opening of the first opening 11c corresponds to the circumferential dimension of the first support 101A at the mark portion 110, as in the first embodiment. there is Since only one first plate member 11 is provided, the contact surface pressure of the first plate member 11 against the column 200 can be sufficiently increased. Width W1 may be narrower than shown.

A base-side bracket 12 is fixed to the base-side edge of the first plate member 11 . The base end bracket 12 is formed by bending a plate member thinner than the first plate member 11 . The base-side bracket 12 includes an upper plate portion 12a that extends along the base-side upper surface of the second plate member 21 that constitutes the second holding member 20, and a base-side lower surface that extends along the base-side lower surface of the second plate member 21. and a connecting plate portion 12c extending from the edge of the upper plate portion 12a to the edge of the lower plate portion and connecting the upper plate portion 12a and the lower plate portion. there is The connecting plate portion 12c is fixed to the base end side edge portion of the first plate member 11 by welding or the like. The base end side of the second plate member 21 is inserted between the upper plate portion 12a and the lower plate portion and connected by a connecting member 30 which will be described later.

On the other hand, a vertical plate member 14 formed thinner than the first plate member 11 is provided at the tip of the first plate member 11 . The vertical plate member 14 is fixed to the tip portion of the first plate member 11 by welding or the like, and extends vertically from the tip portion of the first plate member 11 . The upper portion of the vertical plate member 14 extends above the upper surface of the first plate member 11 , and the lower portion of the vertical plate member 14 extends below the lower surface of the first plate member 11 . Further, the vertical plate member 14 protrudes radially outward from the tip portion of the first plate member 11 .

As shown in FIG. 13, the vertical plate member 14 is formed with a shaft insertion notch 14a for inserting a fastening shaft 41, which will be described later. The notch 14 a for inserting the shaft portion is open toward the distal end side of the vertical plate member 14 . An upper bent portion 14b and a lower bent portion 14c are formed at the distal end portion of the vertical plate member 14 above and below the shaft portion insertion notch portion 14a, respectively. The upper bent portion 14b and the lower bent portion 14c are bent in a direction away from the second holding member 20 in use. Due to the formation of the upper bent portion 14b and the lower bent portion 14c, the nut 42 in the fastened state to be described later engages the upper bent portion 14b and the lower bent portion 14c, and the fastening shaft portion 41 becomes the notch portion for inserting the shaft portion. It becomes difficult to escape from 14a.

The second holding member 20 has a single second plate member 21 and a tip end bracket 22 , and the tip end bracket 22 is fixed to the second plate member 21 . The second plate member 11 and the tip bracket 12 are made of, for example, steel plates. Only one second plate member 21 is provided on the second holding member 20 . The first plate member 11 and the second plate member 21 are arranged at the same height.

Further, on the side of the second plate member 21 that contacts the outer peripheral surface of the first support 101A, a second contact surface 21a that contacts the outer peripheral surface of the first support 101A is formed to extend in an arc shape. The second plate member 21 may be formed with one or more insertion holes 21b. A part of the insertion hole 21b in the circumferential direction opens to the second contact surface 21a. A second opening opening in the second contact surface 21a is denoted by reference numeral 21c. The circumferential width W1 (shown in FIG. 14) of the first support 101A at the opening of the second opening 21c corresponds to the circumferential dimension of the first support 101A at the mark portion 110, as in the first embodiment. there is

As shown in FIG. 14, the insertion hole 11b of the first clamping member 10 and the insertion hole 21b of the second clamping member 20 are symmetrical about the axis C of the first support 101A. are placed. Also, the central portion of the width W1 of the opening of the insertion hole 11b of the first holding member 10 and the central portion of the width W1 of the opening of the insertion hole 21b of the second holding member 20 extend in the radial direction of the first support 101A. They are located on the same straight line D. This straight line D is an imaginary line extending radially through the axis C of the first strut 101A.

A tip-side bracket 22 is fixed to the tip-side edge of the second plate member 21 . The tip side bracket 22 is formed by bending a plate member thinner than the second plate member 21 . The tip side bracket 22 is a connecting plate that extends from an upper plate portion 22a, a lower plate portion 22b, and an edge portion of the upper plate portion 22a to an edge portion of the lower plate portion 22b to connect the upper plate portion 22a and the lower plate portion 22b. and a portion 22c. The connecting plate portion 22c is fixed to the edge portion of the second plate member 21 on the tip side by welding or the like.

The connecting member 30 can be configured by, for example, a shaft made of a metal round bar or the like, and is mounted so as to penetrate the base end side of the second plate member 21 of the second holding member 20 in the vertical direction. An intermediate insertion hole (not shown) through which the vertical intermediate portion of the connecting member 30 is inserted is formed on the base end side of the second plate member 21 . Further, the upper end portion of the connecting member 30 passes through the upper plate portion 12 a of the base end bracket 12 , and the lower end portion of the connecting member 30 passes through the lower plate portion of the base end bracket 12 .

The connecting member 30 is rotatable. Therefore, as shown in FIG. 15, for example, the first holding member 10 is fixed and the second holding member 20 is rotated around the connecting member 30, or the second holding member 20 is fixed, It becomes possible to rotate the first holding member 10 around the connecting member 30 . That is, the base end side of the first holding member 10 and the base end side of the second holding member 20 are connected by the connecting member 30, and in this connected state, the front end side of the first holding member 10 and the second holding member are connected. 20 are rotatable in a direction in which they move toward and away from each other.

An upper retaining ring 31 is fitted to the upper end portion of the connecting member 30 . A lower snap ring (not shown) is fitted to the lower end of the connecting member 30 . As a result, the connecting member 30 does not drop off from the first holding member 10 and the second holding member 20 .

The fastening member 40 includes at least a fastening shaft portion 41, a nut 42, a support shaft 43, an upper retaining ring 44 and a lower retaining ring (not shown). As shown in FIG. 13, a large diameter portion 41a is formed at the proximal end portion of the fastening shaft portion 41. As shown in FIG. A portion of the fastening shaft portion 41 other than the large-diameter portion 41a is composed of a threaded rod having a thread groove continuously formed on the outer peripheral surface thereof, and can be composed of, for example, the shaft portion of a bolt. The nut 42 is a member that is screwed onto the fastening shaft portion 41 . A flange portion 42 a of the nut 42 abuts on the peripheral edge portion of the shaft portion insertion notch portion 14 a of the vertical plate portion 14 .

The support shaft 43 is a member for supporting the large-diameter portion 41 a of the fastening shaft portion 41 so as to be rotatable with respect to the distal end side of the second holding member 20 . The support shaft 43 is made of a round bar member extending vertically in the same manner as the connecting member 30 described above. A vertical intermediate portion of the support shaft 43 vertically penetrates the large diameter portion 41a of the fastening shaft portion 41, so that the support shaft 43 and the large diameter portion 41a of the fastening shaft portion 41 are relatively rotatable. It's becoming The upper end portion of the support shaft 43 penetrates the upper plate portion 22a of the tip-side bracket 22 and protrudes upward from the upper surface of the upper plate portion 22a. ing. On the other hand, the lower end of the support shaft 43 penetrates the lower plate portion 22b of the tip end bracket 22 and protrudes downward from the lower surface of the lower plate portion 22b. not shown) is fitted. The support shaft 43 and the distal bracket 22 are relatively rotatable.

By rotating the fastening shaft portion 41, as shown in FIG. It is possible to switch to a state in which the portion 41 is pulled out from the axial portion insertion notch portion 14 a of the vertical plate member 14 .

In the second embodiment, when the clamp 1 is attached to the first post 101A, the second opening 11c of the first contact surface 11a or the second opening 21c of the second contact surface 21a is inserted into the second opening 11c. Since the clamp 1 can be positioned on the first strut 101A by arranging the one-linear mark portion 110a, the same effects as in the first embodiment can be obtained.

The above-described embodiments are merely examples in all respects and should not be construed in a restrictive manner. Furthermore, all modifications and changes within the equivalent range of claims are within the scope of the present invention.

INDUSTRIAL APPLICABILITY As described above, the temporary scaffolding according to the present invention can be used, for example, when forming scaffoldings for workers at various building construction sites and civil engineering construction sites.

1, 80 Clamps 11a, 81d First contact surfaces 11c, 81e First opening 101A First support 110 Marking portion 110a First linear marking portion 110b Second linear marking portion

Claims (6)

A temporary scaffold comprising a post, a scaffolding component, and a clamp attached to the post having an insertion hole into which a wedge member provided on the scaffolding component is inserted from above,
The clamp includes a first clamping member and a second clamping member that abut against the outer peripheral surface of the column from one side and the other side in the radial direction of the column to clamp the column in the radial direction,
The first clamping member is formed with a contact surface that contacts the outer peripheral surface of the support so as to extend in the circumferential direction of the support, and a part of the insertion hole in the circumferential direction opens into the contact surface. opened by
The outer peripheral surface of the post is provided with a mark portion that serves as a reference for attaching the clamp so that it can be arranged in the opening of the contact surface,
The temporary scaffolding, wherein a circumferential width of the support at the opening of the contact surface corresponds to a circumferential dimension of the support at the mark portion. In the temporary scaffolding according to claim 1,
The marking portion includes a linear first linear marking portion extending in the circumferential direction of the support,
In the temporary scaffolding, the circumferential width of the support at the opening of the contact surface corresponds to the circumferential dimension of the support at the first linear mark portion. In the temporary scaffolding according to claim 2,
A temporary scaffold in which the first linear mark portion is arranged on an extended surface obtained by extending the upper surface of the first holding member. In the temporary scaffolding according to claim 2 or 3,
The mark portion includes a linear second linear mark portion extending in the longitudinal direction of the column from the center portion of the column in the circumferential direction of the first linear mark portion. In the temporary scaffolding according to any one of claims 1 to 4,
In the temporary scaffolding, the marking part is stamped on the outer peripheral surface of the support. When constructing a temporary scaffold comprising a post, a scaffolding component, and a clamp having an insertion hole into which a wedge member provided on the scaffolding component is inserted from above, the clamp being attached to the post. In the mounting method of the clamp attached to the support,
a step of bringing the first holding member and the second holding member of the clamp into contact with the outer peripheral surface of the support from one side and the other side in the radial direction of the support, respectively;
An opening for opening a part of the insertion hole in the circumferential direction is formed in the contact surface of the first holding member that contacts the outer peripheral surface of the support, and the support is provided at the opening of the contact surface. The width in the direction corresponds to the dimension in the circumferential direction of the support at the mark provided on the outer peripheral surface of the support, and the mark is arranged in the opening of the contact surface to attach the clamp to the support. positioning;
and fastening the first clamping member and the second clamping member after positioning the clamp.

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