JP6759391B2 - Connecting structure for temporary scaffolding - Google Patents

Description

The present invention relates to a temporary scaffolding connecting structure in which a connecting member to which a connecting pipe is fixed is fixed by a wedge member to a wedge receiver provided on a support column.

Generally, temporary scaffolding is installed on the outer circumference of a building during construction of a building or the like. In this temporary scaffolding, a plurality of columns are arranged at predetermined intervals, and scaffolding plates are erected between the columns to form a scaffold having a plurality of layers. In such a temporary scaffolding work, as a safety measure for the work of adding the scaffolding upward, a connecting pipe is installed in advance as a handrail before the scaffolding plate is erected.

When installing the connecting pipe, which is a handrail, for example, as shown in FIG. 21, the connecting pipe P is fixed to the wedge receiver 5 which is projected from the support column 1 and has a tubular portion 7 in the support column direction. A connecting structure 100 is used in which the connecting member 111 is wedged by the wedge member 140. The connecting structure 100 is composed of, for example, a substantially U-shaped tubular body in which communication portions 125 and 135 communicating with the tubular portion 7 of the wedge receiver 5 are formed, and the pipe mounting portion 115 on the opposite side to the support column 1. A concave elongated groove portion in which a connecting member 111 having a protruding portion 150 projecting from the support column 1 toward the support column 1 and a protruding portion 150 of the connecting member 111 extending in the vertical direction toward the pipe mounting portion 115 are slidably fitted inside. A wedge member 140 having 145 is provided (see, for example, Patent Document 1).

In the connecting structure 100, the connecting member 111 extends from the upper end of the pipe mounting portion 115 and is placed on the upper end of the wedge receiver 5, and the upper mounting piece 120 and the wedge receiver extending from the lower end of the pipe mounting portion 115. The lower mounting piece 130 arranged below the 5, the connecting piece 112 for integrally connecting the upper mounting piece 120 and the lower mounting piece 130, and the cylinder of the wedge receiver 5 protruding downward from the lower end of the upper mounting piece 120. It has a protrusion 113 inserted into the portion 7. Further, the wedge member 140 is formed on the lower stopper portion 146 formed by closing the lower end side of the long groove portion 145, the through hole 147 formed at the lower end of the long groove portion 145, and the upper end side of the wedge member 140. It also has an upper stopper portion 148.

In the connection structure 100, the wedge member 140 is inserted from the communication portion 125 of the upper mounting piece 120 of the connecting member 111 to the communication portion 135 of the lower mounting piece 130 via the tubular portion 7 of the wedge receiver 5. Is wedged and fixed between the connecting member 111 and the wedge receiver 5. Further, when the wedge member 140 is inserted, the long groove portion 145 of the wedge member 140 is internally fitted with the protruding portion 150 protruding from the pipe mounting portion 115, so that the wedge member 140 has the long groove portion 145 with respect to the protruding portion 150. Since the wedge member 140 falls while sliding, the wedge member 140 is guided in the traveling direction by the protruding portion 150 and does not skew.

In this connecting structure, the end portion of the connecting pipe is brought into contact with the pipe mounting portion of the connecting member and is integrally fixed by welding or the like. However, the length of the connecting pipe may vary due to an error during manufacturing or the like. Therefore, the lengths of the connecting pipes attached to the connecting members are not uniform, and when installing the temporary scaffolding, the dimensions do not match and it may be difficult to properly assemble. Therefore, in order to match the installation dimensions, it is necessary to perform complicated work such as cutting the end of the connecting pipe in advance to make the length uniform.

Further, the end face of the connecting pipe may not be perpendicular to the axial direction of the pipe due to manufacturing error, cutting for dimensional adjustment, or the like. If the end face of the connecting pipe is inclined, the connecting pipe will not be in a horizontal state when it comes into contact with the surface of the pipe mounting portion of the connecting member. Therefore, in the conventional connecting structure, in order to fix the connecting pipe horizontally, it is necessary to use a large amount of filler metal in the inclined portion for welding. Therefore, there are problems such as poor appearance of the welded portion and unevenness of the welded portion to reduce the strength.

JP-A-2015-48677

The present invention has been made in view of the above points, and is a connection structure for temporary scaffolding capable of fixing the connection pipe with a uniform length by suppressing deterioration in appearance and strength of the welded portion with the connection pipe. It provides the body.

That is, in the invention of claim 1, the connecting member to which the connecting pipe is fixed is wedged by the wedge member to the wedge receiver that is projected from the circumferential surface of the support by the tubular portion that opens in the direction of the support axis. In the structure, the connecting member includes a connecting main body portion having an upper member and a lower member arranged above and below the wedge receiver and having a communicating portion communicating with the tubular portion of the wedge receiver inside. A pipe fixing portion having a through hole through which the end portion of the connecting pipe is penetrated and fixed by a predetermined length is formed and integrated as a separate member, and the connecting main body portion is formed by the upper member and the lower member. Is connected by a connecting piece portion, and a mounting step portion for integrally attaching the pipe fixing portion is formed on the connecting pipe side, and the pipe fixing portion is attached to the mounting step portion. The present invention relates to a connection structure for a temporary scaffold, characterized in that a pipe insertion notch portion into which an end portion of the connecting pipe that has penetrated can be inserted is formed.

The invention of claim 2 relates to the connection structure for temporary scaffolding according to claim 1, wherein the through hole and the connecting pipe are welded inside the pipe fixing portion.

According to the third aspect of the present invention, in the connecting member, the upper member and the lower member have a front contact portion on the support column side, and the front surface of the front contact portion abuts on the circumferential surface of the support column and the contacted support column is provided. The connection structure for a temporary scaffold according to claim 1 or 2, wherein a curved portion inward of a communication portion that receives a circumferential surface is formed.

The invention of claim 4, wherein the wedge insertion direction of the wedge member have been formed long groove, the rear surface of the curved portion of the front hook part of the upper and lower members of the coupling member within the long groove portion equivalent The present invention relates to the connection structure for temporary scaffolding according to claim 3, which is configured to be in contact with each other.

According to the fifth aspect of the present invention, an inclined surface is formed at the groove edge portion of the long groove portion of the wedge member, and when the wedge member is wedged, at least one front portion of the upper member or the lower member of the connecting member is curved. The present invention relates to the connection structure for temporary scaffolding according to claim 4, wherein the rear surface of the portion is abutted and fitted to the inclined surface.

The invention of claim 6 relates to the connection structure for temporary scaffolding according to any one of claims 1 to 5, wherein a concave pipe receiving portion is formed on the rear surface of the wedge member.

The invention of claim 7 relates to the connection structure for temporary scaffolding according to any one of claims 1 to 6, wherein a concave tip portion is formed on the front end surface of the wedge member from the front surface side to the rear surface side.

The connection structure for a temporary scaffold according to the invention of claim 1 is a connecting member in which a connecting pipe is fixed to a wedge receiver that is projected from a tubular portion that opens in the direction of the column axis on the circumferential surface of the column. In a structure in which the connecting member is wedged by a wedge member, the connecting member includes an upper member and a lower member arranged above and below the wedge receiver, and a communicating portion communicating with the tubular portion of the wedge receiver is formed inside. The connecting main body and the pipe fixing portion having a through hole through which the end of the connecting pipe is fixed by a predetermined length are formed and integrated as separate members, and the connecting main body is formed on the upper side. The member and the lower member are connected by a connecting piece portion, and the connecting piece portion is formed with a mounting step portion for integrally mounting the pipe fixing portion on the connecting pipe side, and the mounting step portion is formed. Since a pipe insertion notch is formed in which the end of the connecting pipe that penetrates the pipe fixing portion can be inserted, the mounting position can be finely adjusted when the connecting pipe is fixed, and there is a manufacturing error. Even if it is a pipe, it can be fixed as a uniform length, and the appearance of the welded portion with the connecting pipe is improved and the strength is improved as compared with the conventional case.

In the invention of claim 2, since the through hole and the connecting pipe are welded inside the pipe fixing portion in claim 1, the welded portion becomes inconspicuous and the appearance is improved, and the welding is performed. The strength of the part is improved.

According to a third aspect of the present invention, in the first or second aspect, the upper member and the lower member of the connecting member have a front contact portion on the support column side, and the front surface of the front contact portion has a support circumference surface. since the curved portions of the contact the contact struts circumferential surface to the communicating portion side for receiving are formed, the stability of the strut and the abutment coupling member is improved.

According to the third aspect of the present invention, in claim 3, a long groove portion is formed in the wedge insertion direction of the wedge member, and the rear surface of the curved portion of the front portion of the upper member and the lower member of the connecting member is said to be the same. since it is configured so as to be in contact with the long groove portion, the occurrence of the wedge member backlash is positioned at the time and Kusabigi inserted been suppressed, it is possible to stable connection at the appropriate position.

According to a fourth aspect of the present invention, an inclined surface is formed at the groove edge portion of the long groove portion of the wedge member, and at least one of the upper member and the lower member of the connecting member is formed when the wedge member is wedged. Since the rear surface of the curved portion of the front portion is fitted in contact with the inclined surface, the stability when the wedge member is inserted and when the wedge member is attached is improved.

In the invention of claim 6, since the concave pipe receiving portion is formed on the rear surface of the wedge member in claims 1 to 5, the wedge member can be stably placed on the connecting pipe at the time of disconnection. It can be done, and it becomes easy to maintain the disconnected state.

According to the invention of claim 7, since the tip concave surface portion is formed on the front end surface of the wedge member from the front surface side to the rear surface side in the first to sixth aspects, the tip end portion and the upper side of the connecting main body portion are formed when the wedge member is inserted. It is possible to insert the member smoothly because it is less likely to be caught or collided with the member or the lower member.

It is a perspective view at the time of disconnection of the connection structure for temporary scaffolding which concerns on one Embodiment of this invention. It is a perspective view at the time of connection of the connection structure for temporary scaffolding of FIG. It is a vertical cross-sectional view of the main part at the time of connection of the connection structure for temporary scaffolding of FIG. FIG. 3 is a sectional view taken along the line AA of the temporary scaffolding connection structure of FIG. It is an exploded perspective view of the connecting member. It is a front view and the back view of a connecting member. FIG. 6 is a sectional view taken along line BB of the connecting member of FIG. It is a perspective view of a wedge member. It is a cutout perspective view of a main part at the time of connection of the connection structure for temporary scaffolding of FIG. FIG. 2 is an enlarged cross-sectional view of the vicinity of a curved portion of the connecting member when the wedge member of the connecting structure for temporary scaffolding in FIG. 2 is wedged. It is a perspective view at the time of disconnection of the connection structure for a temporary scaffold having a retaining band part. It is a perspective view at the time of connection of the connection structure for temporary scaffolding of FIG. It is a vertical cross-sectional view of the main part at the time of connection of the connection structure for temporary scaffolding of FIG. It is a perspective view of the connecting member which has a retaining band part. It is a cutout perspective view of a main part at the time of connection of the connection structure for temporary scaffolding of FIG. It is a cutout perspective view of the main part at the time of connection of the connection structure for temporary scaffolding which the wedge member has a concave elongated groove part. It is a vertical cross-sectional view of the main part at the time of connection of the connection structure for temporary scaffolding of FIG. 16 is an enlarged cross-sectional view of the vicinity of a curved portion of the connecting member when the wedge member of the connecting structure for temporary scaffolding of FIG. 16 is wedged. It is a vertical cross-sectional view of the connection structure for a temporary scaffold in which a wedge member has a pipe receiving portion and a concave end portion. It is a perspective view of the wedge member of FIG. It is a vertical cross-sectional view of the main part at the time of connection of the conventional connection structure.

The temporary scaffolding connection structure 10 according to the embodiment of the present invention shown in FIGS. 1 and 2 constitutes a handrail or the like with respect to the temporary scaffolding support column 1 installed on the outer periphery of the building during construction of the building or the like. It is a structure for connecting the connecting pipes P to be connected and erection between the columns. The connecting pipe P is an appropriate rod-shaped member such as a horizontal member, a horizontal member, or a diagonal member.

As shown in FIG. 1, the support 1 for the temporary scaffold has wedge holders 5 attached to a plurality of positions on the circumferential surface 2. A plurality of the columns 1 are erected at predetermined intervals at a construction site or the like. As shown in FIGS. 1 and 2, the wedge receiver 5 is a member to which the connecting structure 10 is connected, and is in the support column direction (vertical direction) by the tubular wall surface 6 projecting from the circumferential surface 2 of the support column 1. A tubular portion 7 which is a through hole is formed. A plurality of wedge receivers 5 are arranged at four positions of 90 degrees around the support column 1, and a plurality of wedge receivers 5 are provided as a set in the axial direction of the support column 1 at appropriate intervals. In the figure, reference numeral 6a is formed integrally with the cylinder side wall portion of the wedge receiver 5 projecting from the circumferential surface 2 of the support column 1 so as to face each other, and 6b is formed integrally with the cylinder side wall portions 6a and 6a facing each other, and the lower side is in the support column direction. It is a tubular inclined wall portion of an inclined wedge receiver 5. In FIG. 2, the wedge receivers other than the wedge receiver 5 connected to the connecting structure 10 are not shown.

As shown in FIGS. 2 to 4, the temporary scaffolding connection structure 10 according to the first embodiment of the present invention is a connection in which a connection pipe P is firmly installed with respect to a wedge receiver 5 projecting from a support column 1. The member 11 is wedged by the wedge member 60. The connecting structure 10 is attached to both ends of the connecting pipe P so that it can be erected between the two columns 1 and 1.

As shown in FIGS. 5 to 7, in the connecting member 11, the connecting main body portion 20 and the pipe fixing portion 50 are formed and integrated as separate members, and the connecting pipe P is connected to the pipe fixing portion 50. The end P1 penetrates and is fixed to a predetermined length.

As shown in FIG. 3, the connecting main body portion 20 includes an upper member 30 and a lower member 40 arranged above and below the wedge receiver 5, and the upper member 30 and the lower member 40 are connected by a connecting piece portion 21. It is formed in a substantially U-shape in the lateral view. Further, inside the connecting main body portion 20, a communicating portion 25 communicating with the tubular portion 7 of the wedge receiver 5 is formed.

As shown in FIGS. 3 and 5, the connecting piece portion 21 has an inclined side portion 22 formed on the wedge receiving 5 side and a mounting step portion 23 formed on the connecting pipe P side. The inclined side portion 22 is inclined corresponding to the inclination of the tubular inclined wall portion 6b of the tubular wall surface 6 of the wedge receiver 5, and is in contact with or close to the tubular wall surface 6 when connected to the wedge receiver 5. The mounting step portion 23 is a portion to which the pipe fixing portion 50 described later is integrally mounted. The mounting step portion 23 is formed with a pipe insertion notch portion 24 into which the end portion P1 of the connecting pipe P penetrating the pipe fixing portion 50 can be inserted.

As shown in FIGS. 3 and 5, the communication portion 25 includes an upper communication portion 35 formed inside the upper member 30 and a lower communication portion 45 formed inside the lower member 40, and is composed of an upper communication portion 45. The cylinder portion 7 of the wedge receiver 5 and the lower communication portion 45 communicate integrally with the 35 to form a wedge insertion portion for the wedge member 60 described later.

As shown in FIGS. 1 to 5, the upper member 30 is formed on the upper piece portions 31 and 31 and the upper piece portions 31 and 31 mounted on the cylinder side wall portions 6a and 6a of the cylinder wall surface 6 of the wedge receiver 5. It has an upper front contact portion 32 that is located on the support column 1 side and is integrally formed, and a space portion surrounded by the upper front portion 31, 31 and the upper front contact portion 32 corresponds to the upper communication portion 35. The upper front portion 32 is formed with an upper curved portion 33 whose front surface is curved inward in the upper communicating portion 35 so as to abut and receive the circumferential surface 2 of the support column 1. Further, as shown in FIGS. 3, 5 and 6, the lower end side of the upper front portion 32 is composed of a hanging portion 34 that hangs down so as to reduce the width downward, and is a hanging portion when connected to the wedge receiver 5. 34 enters the cylinder portion 7 of the wedge receiver 5.

As shown in FIGS. 1 to 3 and 5, the lower member 40 includes lower piece portions 41 and 41 arranged below the cylinder side wall portions 6a and 6a of the cylinder wall surface 6 of the wedge receiver 5 and the lower piece portion 41. , 41 has a lower front part 42 that is located on the support 1 side and is integrally formed, and a space portion surrounded by the lower piece pieces 41, 41 and the lower front part 42 is a lower communication portion. Corresponds to 45. The lower front portion 42 is formed with a lower curved portion 43 whose front surface is curved inward of the lower communicating portion 45 so as to abut and receive the circumferential surface 2 of the support column 1. In the lower member 40, the upper members 31 and 31 of the upper member 30 are integrally connected to each other by the connecting pieces 21 and 21 on the connecting pipe side and the lower pieces 41 and 41 on the connecting pipe side, respectively.

As shown in FIGS. 1 to 4, the pipe fixing portion 50 is a member to which the connecting pipe P is fixed. As shown in FIGS. 3, 5 and 6, the pipe fixing portion 50 is integrated with the connecting main body portion 20 by an appropriate method such as welding to the mounting step portion 23 of the connecting main body portion 20. The pipe fixing portion 50 is made of a plate-shaped member, and has a mounting piece portion 51 that is projected in the surface direction on both side portions and is fitted to the mounting step portion 23, and is attached to the mounting step portion 23 to form a connecting main body. It is substantially flush with the rear side portion 26 of the portion 20.

As shown in FIGS. 3, 5, 6 and 7, the pipe fixing portion 50 has a through hole 55 for fixing the connecting pipe P. The end P1 of the connecting pipe P is penetrated through the through hole 55 and fixed by an appropriate method such as welding. The size (diameter) of the through hole 55 is determined according to the diameter of the connecting pipe P. As shown in FIGS. 3, 5 and 7, in the pipe fixing portion 50 of the embodiment, the end portion P1 of the connecting pipe P is penetrated through the through hole 55, and the through hole 55 and the connecting pipe P are formed outside the pipe fixing portion 50. Welding is done. Reference numeral W is a welded portion with the connecting pipe P formed on the peripheral edge of the through hole 55 outside the pipe fixing portion 50.

When the connecting pipe P is attached, the end portion P1 of the connecting pipe P penetrated through the through hole 55 of the pipe fixing portion 50 enters the inside of the connecting main body portion 20 as shown in FIGS. Here, as in the embodiment shown in FIGS. 6 and 7, when the diameter of the connecting pipe P is larger than the width of the connecting main body 20, the pipe insertion notch 24 is formed in the mounting step 23 of the connecting main body 20. As a result, the end portion P1 of the connecting pipe P can enter the inside of the connecting main body portion 20 by a predetermined amount. In this way, in the pipe fixing portion 50, since the connecting pipe P can be penetrated through the through hole 55 and entered into the connecting main body portion 20 by a predetermined amount, the mounting position thereof should be finely adjusted when the connecting pipe P is fixed. Is possible. As a result, even if the length of the connecting pipe P varies due to an error during manufacturing or the like, the amount of entry of the end portion P1 of the connecting pipe P into the connecting main body portion 20 can be adjusted from the pipe fixing portion 50. The length of the connecting pipe P to be extended can be set to a desired length. Therefore, even if there are a plurality of connecting pipes having a manufacturing error, the connecting pipes extending from the pipe fixing portion 50 can be fixed to have a substantially uniform length.

Since the welding of the pipe fixing portion 50 and the connecting pipe P is performed in a state where the end portion P1 of the connecting pipe P penetrates the through hole 55, the horizontal state at the time of fixing the connecting pipe P (relative to the pipe fixing portion 50). The verticality of the end face does not affect (approximately vertical). That is, the connecting pipe P can be easily fixed in a horizontal state simply by inserting and welding the connecting pipe P into the through hole 55 of the pipe fixing portion 50. At that time, since the connecting pipe P is not tilted with respect to the pipe fixing portion 50, the welded portion W with the connecting pipe P is formed substantially uniformly over the entire circumference of the connecting pipe P. Therefore, the appearance of the welded portion with the connecting pipe P is improved as compared with the conventional case, and the welded portion is not biased and the strength is improved.

Further, in the pipe fixing portion 50, the through hole 55 and the connecting pipe P may be welded inside the pipe fixing portion 50 as in the welding portion W1 with the connecting pipe P shown in FIG. Welding inside the pipe fixing portion 50 is performed before the pipe fixing portion 50 is integrated with the connecting main body portion 20, so that the welding work can be facilitated. By welding inside the pipe fixing portion 50 in this way, the welded portion becomes inconspicuous and the appearance is improved. In particular, when welding is performed only on the inside of the pipe fixing portion 50, the appearance is improved because the welded portion is not exposed on the outside of the pipe fixing portion 50. If welding is performed on both the inner and outer sides of the pipe fixing portion 50, the strength of the welded portion is further improved as compared with the case where only one of the pipes is welded.

As shown in FIGS. 2, 3, 4, 8 and 9, the wedge member 60 is wedge-attached to the communication portion 25 (35, 45) of the connecting member 11 and the tubular portion 7 of the wedge receiver 5, and is wedged. It is a member for fixing the connecting member 11 to the receiver 5, and has a wedge main body 61 and a long groove portion 65. As shown in FIGS. 3 and 6, the wedge body 61 has a straight portion 62 having a linear surface on the support column side and an inverted tapered shape so that the surface on the wedge receiving side shrinks toward the tip portion. It has a wedge shape having a wedge inclined portion 63 formed in. As shown in FIG. 3, the wedge inclined portion 63 is formed corresponding to the inclination of the tubular inclined wall portion 6b of the wedge receiver 5, and is pressed against the tubular inclined wall portion 6b of the wedge receiver 5 when the wedge member 60 is wedged. Wedge.

As shown in FIGS. 3 and 8, the elongated groove portion 65 extends linearly from the rear end side to the front end side in the wedge insertion direction of the wedge member 60. The elongated groove portion 65 is provided at least on the surface of the wedge body 61 on the support column side. The long groove portion 65 of the illustrated embodiment is a through groove 65a penetrating from the support column side (front side) of the wedge body 61 to the wedge receiving side (rear surface side). In the long groove portion 65, as shown in FIGS. 3 and 9, when the wedge member 60 is wedged, the upper member 30 of the connecting main body portion 20 and the rear surface of the curved portions 33, 43 of the front contact portions 32, 42 of the lower member 40 Is abutted. At that time, as shown in FIG. 10, the vicinity of the apex 33a (43a) of the curved portion 33 (43) curved inward of the communicating portion 25 of the connecting member 11 is received inside the elongated groove portion 65, and the curved portions 33 on both sides are received. The groove edge portion 66 of the long groove portion 65 is brought into contact with the skirts 33b, 33b (43b, 43b) of (43). Therefore, the wedge member 60 is positioned at the time of insertion and at the time of wedge attachment, and the occurrence of rattling is suppressed. In the long groove portion 65, the groove width is appropriate, but for example, the contact position with the rear surfaces of the curved portions 33, 43 is outside the contact position between the curved portions 33, 43 and the circumferential surface 2 of the support column 1. From the viewpoint of stability at the time of contact, it is preferable to set the width to such an extent.

In the long groove portion 65, as shown in FIGS. 8 to 10, an inclined surface 67 is formed on the groove edge portion 66, and when the wedge member 60 is wedged, it is in front of at least one of the upper member 30 or the lower member 40 of the connecting member 11. It is preferable that the rear surfaces of the curved portions 33 and 43 of the portions 32 and 42 are abutted and fitted to the inclined surface 67. More preferably, the rear surfaces of the curved portions 33 and 43 of the front contact portions 32 and 42 of both the upper member 30 and the lower member 40 of the connecting member 11 are abutted and fitted to the inclined surface 67. By forming the inclined surface 67 on the long groove portion 65 in this way, the curved portions 33 and 43 of the connecting member 11 are more reliably received inside the long groove portion 65, and when the wedge member 60 is inserted and when the wedge member is attached. Improves stability.

Next, the procedure for connecting the temporary scaffolding connection structure 10 of the present invention will be described. First, when the connection shown in FIG. 1 is released, the connection member 11 of the connection structure 10 is not fixed to the wedge receiver 5, and is in a state where it can be separated. At the time of disconnection, the wedge member 60 is pulled out from the communication portion 25 of the connecting member 11.

When connecting the connecting structure 10 to the wedge receiver 5, as shown in FIGS. 2 and 3, the connecting member 11 is fitted into the wedge receiver 5, and the upper member 30 of the connecting main body 20 is on the wedge receiver 5. The lower member 40 is placed below the wedge receiver 5. At that time, as shown in FIGS. 4 and 10, the front surfaces of the curved portions 33 and 43 formed on the front contact portions 32 and 42 of the upper member 30 and the lower member 40 of the connecting main body portion 20 are the circumference of the support column 1. It is abutted so as to receive against the surface 2. Therefore, the stability of the connecting member 11 that comes into contact with the support column 1 is improved. Further, as shown in FIGS. 3 and 9, in the upper member 30 of the connecting main body 20, the hanging portion 34 of the upper front portion 32 enters the tubular portion 7 of the wedge receiver 5, so that the connecting member 11 is fitted at the time of fitting. Since the approximate connection position of the connection member 11 is defined, the positioning of the connection member 11 becomes easy.

In the connecting member 11 positioned in this way, the communicating portion 25 of the connecting main body portion 20 and the tubular portion 7 of the wedge receiver 5 communicate with each other. That is, the upper communication portion 35 of the upper member 30, the tubular portion 7 of the wedge receiver 5, and the lower communication portion 45 of the lower member 40 are communicated with each other so as to penetrate vertically. Then, as shown in FIGS. 2, 3, 4, and 9, a wedge is provided with respect to the upper communication portion 35 of the connected main body 20, the cylinder portion 7 of the wedge receiver 5, and the lower communication portion 45 of the connecting main body 20. The member 60 is wedged through.

Here, when the wedge member 60 is inserted, as shown in FIG. 10, the rear surface of the upper curved portion 33 of the upper member 30 of the connecting main body portion 20 and the lower curved portion 43 of the lower member 40 is in the elongated groove portion 65. It is abutted and slid. Therefore, the wedge member 60 is positioned and can be stably inserted. In particular, since the inclined surface 67 is formed in the long groove portion 65, the rear surfaces of the curved portions 33 and 43 of the connecting main body portion 20 are abutted and fitted into the inclined surface 67, so that the stability of the wedge member 60 is further enhanced. As described above, since the wedge member 60 can be inserted stably, workability can be improved and efficiency can be improved.

As shown in FIGS. 3, 4, and 9, the wedge member 60 inserted into the upper communication portion 35 of the connecting main body portion 20, the tubular portion 7 of the wedge receiver 5, and the lower communication portion 45 of the connecting main body portion 20 is a wedge receiver. It is inserted between the tubular inclined wall portion 6b of 5 and the front portions 32 and 42 of the connecting main body portion 20. At this time, the straight portion 62, which is the surface of the wedge body 61 on the support column side, has the curved portions 33 and 43 of the connecting main body 20 abutted and fitted into the long groove portion 65, so that the front contact portion of the connecting main body 20 is fitted. Close to or in contact with 32, 42. Further, the wedge inclined portion 63, which is the surface of the wedge main body 61 on the wedge receiving side, is brought into contact with the wedge inclined portion 63 corresponding to the inclination of the tubular inclined wall portion 6b of the wedge receiving 5.

From this state, by striking the wedge member 60 from the rear end side (upper side) of the wedge member 60 in the insertion direction with a hammer or the like, the wedge inclined portion 63 of the wedge main body 61 is pressed against the cylindrical inclined wall portion 6b of the wedge receiver 5 and wedged. .. At this time, the wedge member 60 is pressed toward the support column, and the long groove portion 65 (inclined surface 67) is pressed against the curved portions 33 and 43 of the connecting main body portion 20. Then, as shown in FIG. 10, the curved portion 33 (43) of the connecting main body portion 20 has the circumferential surface 2 of the support column 1 abutted on the front surface side and the circumferential surface 2 of the support column 1 on the rear surface side. Both groove edges 66, 66 (inclined surfaces 67, 67) of the long groove portion 65 of the wedge member 60 abutted on the hem 33b, 33b (43b, 43b) side of the curved portion 33 (43) outside the abutting portion. It will be in a state of being sandwiched between. Therefore, rattling of the connecting member 11 at the time of connection is less likely to occur, and stable connection at an appropriate position is possible.

When the connection of the connection structure 10 connected in this way is released, the wedge body 61 is released from pressure welding by striking the wedge member 60 from the tip end side (lower side) to the opposite side in the insertion direction with a hammer or the like. The wedge member 60 can be easily pulled out.

11 to 13 are the temporary scaffolding connection structure 10A according to the second embodiment. In the connecting structure 10A, the long groove portion 65 of the wedge member 60 is loosely fitted and engaged with the retaining band portion 70 provided on the upper member 30 of the connecting main body portion 20. In the following description, the same reference numerals as those in the first embodiment represent the same configuration, and the description thereof will be omitted.

As shown in FIGS. 13 and 14, the retaining band portion 70 is a plate-shaped member erected between the upper end portion of the pipe fixing portion 50 and the upper end portion of the upper front portion 32 of the upper member 30. As shown in FIGS. 11 to 13 and 15, the retaining band portion 70 is loosely fitted and engaged to the long groove portion 65 which is the through groove 65a of the wedge member 60 to prevent the wedge member 60 from falling off from the connecting member 11. While preventing it, the wedge insertion direction of the wedge member 60 is restricted.

As shown in FIGS. 13 and 14, the retaining band portion 70 of the embodiment is a band-shaped member integrally formed at the upper end portion of the pipe fixing portion 50. The long groove portion 65 of the wedge member 60 is loosely fitted in the retaining band portion 70, and the upper member 30 is bent in the direction of the upper front contact portion 32, and the tip portion thereof is subjected to an upper front contact by an appropriate method such as welding. It is fixed and erected at the upper end of the portion 32. In FIGS. 13 and 14, reference numeral 71 is a vertical band-shaped portion extending upward from the upper end portion of the pipe fixing portion 50, 72 is a bent portion of the retaining band portion 70, and 73 is an upper communication portion 35 of the connecting main body portion 20. A horizontal band-shaped portion that is arranged so as to straddle the wedge member 60 and is loosely fitted into the long groove portion 65 of the wedge member 60, and 75 is a welded portion with a retaining band portion obtained by welding the horizontal band-shaped portion 73 of the retaining band portion 70.

In the connecting structure 10A, as shown in FIGS. 12, 13 and 15, the retaining band portion 70 erected on the upper member 30 of the connecting main body portion 20 is loosely fitted in the elongated groove portion 65 of the wedge member 60. The wedge member 60 does not fall off from the connecting member 11, and there is no risk of loss or the like. Therefore, for example, the wedge member 60 can be placed on the connecting pipe P at the time of disconnection shown in FIG. In the connecting structure 10A, the retaining band portion 70 loosely fitted in the long groove portion 65 of the wedge member 60 is separated from the upper end portion of the pipe fixing portion 50 by the vertical strip-shaped portion 71. It is erected at the position where it was set. Therefore, the wedge member 60 can be pulled down from the upper side of the connecting member 11 in the tubular direction of the connecting pipe P, and the wedge member 60 can be appropriately placed on the connecting pipe P without falling off. As a result, the wedge member 60 does not unnecessarily protrude from the connecting pipe P, and there is no risk of hindering the work.

Further, when the connecting structure 10A is connected, as shown in FIGS. 12 and 13, the wedge member 60 is substantially vertically fitted because the retaining band portion 70 is loosely fitted in the long groove portion 65 of the wedge member 60. It is moved directly. Therefore, when the wedge member is attached, the wedge insertion direction of the wedge member 60 is restricted, and the wedge member 60 can be stably inserted. At the time of this insertion, the wedge member 60 has a long groove portion on the rear surface of the upper curved portion 33 of the upper member 30 of the connecting main body portion 20 and the lower curved portion 43 of the lower member 40, as in the first embodiment shown in FIG. It is brought into contact with the inside of 65 and slid. Therefore, the wedge member 60 can be inserted more stably by the regulation of the wedge insertion direction by the retaining band portion 70 and the positioning by the elongated groove portion 65 and the curved portions 33 and 43 of the connecting main body portion 20. In particular, the stability of the wedge member 60 is further enhanced by forming the inclined surface 67 in the elongated groove portion 65. Therefore, excellent stability when the wedge member 60 is inserted can be obtained, workability can be further improved, and efficiency can be improved.

16 and 17 are the temporary scaffolding connection structure 10B according to the third embodiment. In the connecting structure 10B, the long groove portion 65 of the wedge member 60 is formed of a concave groove 65b provided on the surface of the wedge body 61 on the support column side and does not penetrate to the wedge receiving side. As shown in FIG. 18, the concave groove 65b is brought into contact with the rear surface of the curved portion 33 (43) of the connecting main body portion 20 when the wedge member 60 is wedged, as in the first embodiment, and the curved portion 33 (43) The vicinity of the apex 33a (43a) is received inside the concave groove 65b. Therefore, the wedge member 60 is positioned at the time of insertion and at the time of wedge attachment, and the occurrence of rattling is suppressed. The groove depth of the concave groove 65b is not particularly limited, but it is sufficient that the curved portion 33 (43) can be sufficiently received when the connecting main body 20 comes into contact with the curved portion 33 (43).

Further, in the connecting structure 10B, as shown in FIG. 16, a retaining pin 80 may be provided on the rear end side of the wedge body 61 of the wedge member 60. The retaining pin 80 is projected from the surface of the wedge body 61 on the upper side pieces 31 and 31 side of the connecting body part 20 so as to be longer than the distance between the upper piece portions 31 and 31. Therefore, for example, when the wedge member 60 is inserted into the connecting member 11 when the connecting structure 10B is disconnected, the retaining pin 80 is locked to the upper piece portions 31 and 31 of the upper member 30 and the wedge member 60 is engaged. Is prevented from falling off.

FIG. 19 is a temporary scaffolding connection structure 10C according to the fourth embodiment. In this connecting structure 10C, as shown in FIG. 20, a concave pipe receiving portion 68 is formed on the rear surface of the wedge body 61 of the wedge member 60, and the front side of the wedge body 61 of the wedge member 60 is on the front side. The tip concave surface portion 69 is formed from the to the rear surface side.

The pipe receiving portion 68 is formed of a concave portion that can be received corresponding to the outer peripheral surface of the connecting pipe P that extends linearly from the rear end to the rear surface of the wedge body 61 of the wedge member 60 in the wedge insertion direction. The shape of the pipe receiving portion 68 is not particularly limited as long as the outer peripheral surface of the connecting pipe P is acceptable. In the embodiment shown in FIG. 19, the pipe receiving portion 68 is composed of a through groove 65a and a pipe receiving concave surface portion 68a connected to the through groove 65a. The wedge member 60 having the pipe receiving portion 68 is placed on the connecting pipe P so that the pipe receiving portion 68 receives the outer peripheral surface of the connecting pipe P when the connection is released as shown in FIG. Therefore, the wedge member 60 can be stably placed on the connecting pipe P at the time of disconnection, and the disconnected state can be easily maintained.

The tip concave surface portion 69 has a curved surface shape corresponding to the inner curved surface of each of the upper curved portion 33 of the upper member 30 and the lower curved portion 43 of the lower member 40. In the wedge member 60, the upper curved portion 33 of the upper member 30 of the connecting main body 20 and the lower curved portion 43 of the lower member 40 may come into contact with the tip of the wedge main body 61 at the time of insertion. Therefore, by providing the tip concave surface portion 69 on the tip surface of the wedge body 61, the wedge member 60 is less likely to be caught or collided with the upper curved portion 33 or the lower curved portion 43 of the tip portion of the wedge body 61. It can be inserted smoothly.

The connection structure for temporary scaffolding of the present invention is not limited to the above-described embodiment, and a part of the configuration can be appropriately modified and implemented without departing from the spirit of the invention. For example, by providing the wedge member in the connecting structure of the first embodiment with a retaining pin provided on the wedge member in the connecting structure of the third embodiment, it is possible to prevent the wedge member from falling off. ..

As described above, the connecting structure for temporary scaffolding of the present invention can be fixed with a uniform length even if the connecting pipe has a manufacturing error, and the appearance of the welded portion with the connecting pipe is improved. And the strength is also improved. Therefore, it is promising as an alternative to the conventional connection structure for temporary scaffolding.

1 Strut 2 Circumferential surface 5 Wedge holder 6 Cylinder wall surface 6a Cylinder side wall 6b Cylinder inclined wall 7 Cylinder 10, 10A, 10B, 10C Connecting structure for temporary scaffolding 11 Connecting member 20 Connecting body 21 Connecting piece 22 Inclined Side part 23 Mounting step part 24 Pipe insertion notch part 25 Communication part 26 Rear side part 30 Upper member 31 Upper piece part 32 Upper front part 33 Upper curved part 33a Top of upper curved part 33b Bottom of upper curved part 34 Hanging 35 Upper communication part 40 Lower member 41 Lower piece 42 Lower front part 43 Lower curved part 43a Top of lower curved part 43b Bottom of lower curved part 45 Lower communication part 50 Pipe fixing part 51 Mounting piece part 55 Through hole 60 Wedge member 61 Wedge body 62 Straight part 63 Wedge inclined part 65 Long groove part 65a Through groove 65b Concave groove 66 Groove edge part 67 Inclined surface 68 Pipe receiving part 68a Pipe receiving concave part 69 Tip concave part 70 Retaining band part 71 Vertical band 72 Bent part 73 Horizontal band-shaped part 75 Welding part with retaining band 80 Retaining pin P Connecting pipe P1 End of connecting pipe W, W1 Welding part with connecting pipe

Claims (7)

In a structure in which a connecting member to which a connecting pipe is fixed is wedged by a wedge member to a wedge receiver projecting from a cylindrical portion that opens in the direction of the column axis on the circumferential surface of the column .
The connecting member includes a connecting main body portion having an upper member and a lower member arranged above and below the wedge receiver and having a communicating portion communicating with the tubular portion of the wedge receiver inside, and a connecting pipe. A pipe fixing portion having a through hole through which the end portion penetrates and is fixed by a predetermined length is formed and integrated as a separate member.
In the connecting main body portion, the upper member and the lower member are connected by a connecting piece portion, and a mounting step portion for integrally attaching the pipe fixing portion is formed on the connecting piece portion on the connecting pipe side. A temporary scaffolding connecting structure, wherein a pipe insertion notch is formed in the mounting step portion into which an end portion of the connecting pipe penetrating the pipe fixing portion can be inserted. The connection structure for temporary scaffolding according to claim 1, wherein the through hole and the connection pipe are welded inside the pipe fixing portion. In the connecting member, the upper member and the lower member have a front contact portion on the support column side, and the front surface of the front contact portion abuts on the support column peripheral surface and receives the contacted support column peripheral surface. The connected structure for a temporary scaffold according to claim 1 or 2, wherein a curved portion inward is formed. A long groove portion is formed in the wedge insertion direction of the wedge member, and the rear surface of the curved portion of the front portion of the upper member and the lower member of the connecting member is configured to abut in the long groove portion. Item 3. The connection structure for temporary scaffolding according to item 3. An inclined surface is formed at the groove edge portion of the long groove portion of the wedge member, and when the wedge member is wedged, the rear surface of the curved portion of at least one of the upper member or the lower member of the connecting member is the inclined surface. The connection structure for a temporary scaffold according to claim 4, which is fitted in contact with the wedge. The connection structure for temporary scaffolding according to any one of claims 1 to 5, wherein a concave pipe receiving portion is formed on the rear surface of the wedge member. The connection structure for a temporary scaffold according to any one of claims 1 to 6, wherein a concave tip portion is formed on the front end surface of the wedge member from the front surface side to the rear surface side.

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