Wedge-fastening type scaffolding support component

Abstract

To provide a wedge fastening type temporary scaffolding support component capable of directly supporting a horizontal force applied to the support with a cloth material. [Solution] A wedge fastening type temporary scaffolding support component 10 comprises a column member 11 and socket fittings 12A, 12B that are U-shaped in plan view. A first spacer 17 is disposed within the range of the total height of each socket fitting 12A, 12B in each socket fitting 12A, 12B, and a second spacer 18 is disposed at a height position above the upper end of each socket fitting 12A, 12B. The first spacer 17 has a receiving portion 171 against which the insert fitting of the fabric material is pressed when fastened. The second spacer 18 has an abutting portion 181 against which the insert fitting of the fabric material is abutted when fastened.

Description

[Technical field]

[0001] The present invention relates to a support component used in a wedge-fastening type temporary scaffolding having a plurality of supports and a fabric material whose both ends are removably attached to adjacent supports.

[0002] In this specification and claims, the top and bottom of Figs. 1, 2, and 4 to 11 will be referred to as the top and bottom. [Background technology]

[0003] The above-mentioned support of the wedge-fastening temporary scaffolding is constructed by connecting a plurality of support components in the longitudinal direction, or by using them individually, each of which comprises a cylindrical column member and a group of four socket fittings, each of which is U-shaped in plan view and fixed to the outer circumferential surface of the column member at equal angular intervals in the circumferential direction. The socket fitting comprises a pair of flanges and a web portion that integrally connects both flanges, and the tips of both flanges are fixed to the column member. The column member and the socket fitting form an insertion space that opens upward and into which an insert fitting provided on the fabric material of the temporary scaffolding is inserted. The insert fittings are provided on both ends of the fabric material used in the wedge-fastening temporary scaffolding, and the insert fittings are inserted from above into the insertion space of the socket fittings, and the insert fittings are pressed against the outer circumferential surface of the column member and the surface of the web portion of the socket fitting facing the column member, and are held in a fastened state by the wedge action, thereby fixing the fabric material to the column.

[0004] In order to reduce the burden on workers when carrying them, there is a demand for the weight of the pole-constituting members, and the diameter of the pole-constituting members may be reduced. However, when the outer diameter of the pole-constituting members is reduced, there is a problem that the insert metal fittings provided at both ends of the fabric material made to fit the pole-constituting members having a normal outer diameter cannot be inserted into the insertion spaces of the socket metal fittings and held in a tightly fastened state.

[0005] In order to solve the above-mentioned problems, the applicant previously proposed a support component for a wedge-fastening type temporary scaffolding as described in Patent Document 1.

[0006] The pillar component of a wedge-fastened temporary scaffolding described in Patent Document 1 comprises a cylindrical pillar member and a group of socket fittings consisting of four socket fittings that are U-shaped in plan view and fixed to the outer circumferential surface of the pillar member at equal angular intervals in the circumferential direction, the socket fittings consisting of a pair of flange portions and a web portion that connects both flange portions together, and the tips of both flange portions are fixed to the pillar member, the pillar member and the socket fitting form an insertion space that opens upward and into which an insert fitting provided on the fabric material of the temporary scaffolding can be inserted, and a spacer is provided between the tips of the two flange portions of the socket fittings, the horizontal cross-sectional shape of which is an arc that follows the outer circumferential surface of the pillar member and has a constant thickness in the radial direction of the pillar member. This is a pillar component for a wedge-fastened temporary scaffolding.

[0007] According to the wedge-fastened temporary scaffolding equipped with supports made of support components described in Patent Document 1, even if the diameter of the support components is reduced, as long as the radius of curvature of the outer surface of the spacer is equal to half the outer diameter of a support component having a normal outer diameter, the insert metal fittings provided at both ends of the fabric material made to fit the support component having a normal outer diameter can be inserted into the insertion space of the socket metal fittings and held in a fastened state by the wedge action. Therefore, it is possible to reduce the weight of the support components. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Patent No. 7377402 Summary of the Invention [Problem to be solved by the invention]

[0009] However, in the case of a wedge-fastened temporary scaffolding equipped with a support made of the support component member described in Patent Document 1, there is a slight gap between the portion of the insert metal fitting of the fabric material that protrudes above the socket metal fitting and the fabric material, so when horizontal forces are continuously applied to the support due to shaking or vibration, the horizontal forces are not easily transmitted directly to the fabric material, and are transmitted mainly to the insert metal fitting via the socket metal fitting. As a result, there is a risk of an upward force acting on the insert metal fitting.

[0010] The object of the present invention is to solve the above problems and provide a wedge-fastening type temporary scaffolding support component which makes it possible to hold in a fastened state insert fittings provided at both ends of a fabric material made to fit a support component having a normal outer diameter, and which makes it possible to transmit horizontal forces continuously applied to the support due to vibration or deflection directly to the fabric material. [Means for solving the problem]

[0011] In order to achieve the above object, the present invention comprises the following aspects.

[0012] 1) A wedge-fastening type temporary scaffolding support component comprising a cylindrical column member and a socket fitting group consisting of four socket fittings that are U-shaped in plan view and fixed to the outer circumferential surface of the column member at equal angular intervals in the circumferential direction, the socket fittings comprising a pair of flange portions and a web portion that integrally connects both flange portions, and the tips of both flange portions are fixed to the column member, the column member and the socket fittings form an insertion space that opens upward and into which an insert fitting provided on a fabric material of the temporary scaffolding can be inserted, a first spacer having a receiving portion against which a portion of the insert fitting inserted into the socket fitting is pressed during fastening is disposed within at least a range of the overall height of each socket fitting and fixed to the pillar member; A second spacer having an abutment portion against which the portion of the insert metal fitting that protrudes above the socket metal fitting when fastened is abutted is disposed at a height position above the upper end of each socket metal fitting and fixed to the column member.And, No. 1 The spacer has a plate-shaped main body portion that is arc-shaped in horizontal section with the center of curvature at the center of the column member and that fits along the outer peripheral surface of the column member, the receiving portion is formed integrally with the main body portion of the first spacer and bulges toward the web portion side of the socket fitting, the horizontal cross-sectional shape of the surface of the receiving portion facing the web portion side of the socket fitting is arc-shaped with the center of curvature at the center of the column member, and the wall thicknesses of the main body portion and the receiving portion of the first spacer are equal, I'm a cat. And pillar components for fastening type erection scaffolding.

[0013] 2) The second spacer has a plate-shaped main body portion that has a horizontal cross-sectional arc shape with the center of curvature at the center of the pillar member and that conforms to the outer peripheral surface of the pillar member, the abutment portion is formed integrally with the main body portion of the second spacer and bulges toward the web portion side of the socket fitting, the horizontal cross-sectional shape of the surface of the abutment portion facing the web portion side of the socket fitting is an arc shape with the center of curvature at the center of the pillar member, and the thickness of the main body portion of the second spacer and the thickness of the abutment portion are equal. 1) Above A support component for a wedge-tightening type erection scaffolding as described above.

[0014] 3) The contact portion of the second spacer is disposed so as to be located at least within a range between the lower end of the fabric material and the center in the vertical direction. 2) A support component for a wedge-tightening type erection scaffolding as described above.

[0015] 4) The second spacer is formed integrally with the first spacer, and the main body of the first spacer and the main body of the second spacer, and the receiving portion of the first spacer and the contact portion of the second spacer are integrated, respectively. 2) A support component for a wedge-tightening type erection scaffolding as described above.

[0016] 5) The second spacer is formed separately from the first spacer. 2) A support component for a wedge-tightening type erection scaffolding as described above.

[0017] 6) A wedge-fastening type temporary scaffolding support component comprising a cylindrical column member and a socket fitting group consisting of four socket fittings that are U-shaped in plan view and fixed to the outer circumferential surface of the column member at equal angular intervals in the circumferential direction, the socket fittings comprising a pair of flange portions and a web portion that integrally connects both flange portions, and the tips of both flange portions are fixed to the column member, the column member and the socket fittings form an insertion space that opens upward and into which an insert fitting provided on a fabric material of the temporary scaffolding can be inserted, a first spacer having a receiving portion against which a portion of the insert fitting inserted into the socket fitting is pressed during fastening is disposed within at least a range of the overall height of each socket fitting and fixed to the pillar member; A second spacer having an abutment portion against which a portion of the insert fitting that protrudes above the socket fitting when fastened is abutted is disposed at a height position above the upper end of each socket fitting and fixed to the pillar member, a first spacer is shorter than the socket fitting and has a cylindrical shape with its center coinciding with the center of the pillar member, the first spacer is fitted over the pillar member so as to be positioned within a range of the socket fitting in the height direction and fixed to the pillar member, and a receiving portion is provided on a part of the outer circumferential surface of the first spacer, The second spacer is cylindrical with its center coinciding with the center of the column member and is formed separately from the first spacer. The second spacer is fitted over the column member and fixed to the column member. An abutment portion is provided on a part of the outer circumferential surface of the second spacer. I'm a cat. And pillar components for fastening type erection scaffolding.

[0018] 7) Each socket fitting group is composed of two first socket fittings located on one diameter of the pillar member and two second socket fittings located on another diameter perpendicular to the one diameter of the pillar member, the two first socket fittings are at the same height, the two second socket fittings are at the same height and at a higher height than the first socket fittings, a second spacer located above a first spacer located within the height range of the first socket fittings also serves as a first spacer located within the height range of the second socket fittings, and the second spacer is provided on its outer circumferential surface with a receiving portion against which a portion of the insert fitting inserted into the second socket fitting is pressed when fastened, and an abutting portion against which a portion of the insert fitting protruding above the first socket fitting is abutted when fastened. 6) A support component for a wedge-tightening type erection scaffolding as described above. Effect of the Invention

[0019] 1) above~ 7)According to this pillar component, even if the diameter of the pillar component is reduced, as long as the distance between the receiving portion of the first spacer and the surface of the socket fitting facing the web side is made equal to the distance between the outer circumferential surface of a pillar component having a normal outer diameter and the surface of the socket fitting facing the web side, the insert fittings provided at both ends of the fabric material made to fit a pillar component having a normal outer diameter can be inserted into the insertion space of the socket fitting and held in a tightly fastened state by the wedge action. Therefore, it is possible to reduce the weight of the pillar component.

[0020] Moreover, the portions of the insert metal fittings that are inserted into the socket metal fittings and that protrude upward from the socket metal fittings during fastening are brought into contact with the contact portions of the second spacer, so that the above-mentioned 1) to 1) can be achieved. 7) In a wedge-fastened temporary scaffolding equipped with a support made of the support component member described above, when horizontal force is continuously applied to the support due to shaking or vibration, the horizontal force applied to the support is directly transmitted to the fabric material via the portion of the insert metal fitting that protrudes upward from the socket metal fitting. Therefore, it is possible to prevent the insert metal fitting from receiving an upward force that would loosen the fastening force due to the wedge action.

[0021] Also, above 1) According to this pillar component, it is possible to reduce the thickness of the main body and receiving portion of the first spacer compared to the spacer described in Patent Document 1, in which the overall thickness is constant and the radius of curvature of the entire outer peripheral surface is 1 / 2 the outer diameter of a pillar component having an outer diameter of normal size.

[0022] 2) According to this support pillar component, the second spacer can be made relatively light in weight.

[0023] 3) According to the support pillar component, the contact portion of the second spacer is disposed so as to be located at least within a range between the lower end of the fabric material and the center in the up-down direction. 3)In a wedge-fastened temporary scaffolding equipped with supports made of the support component parts described above, when horizontal force is continuously applied to the support due to shaking or vibration, the horizontal force applied to the support is efficiently transmitted directly to the fabric material via the part of the insert fitting that protrudes upward beyond the socket fitting.

[0024] 4) According to this support component, the first spacer and the second spacer can be manufactured relatively easily, and the work of installing both spacers on the support component becomes easy.

[0025] 7) According to this support component, it is possible to reduce the number of parts. [Brief description of the drawings]

[0026] [Figure 1] FIG. 1 is a partial front view showing a portion of a wedge-tightened temporary scaffolding equipped with a support made of the support component of this invention, in which a fabric material having insert fittings at both ends is placed between two adjacent supports and the insert fittings are attached to the socket fittings in a tightened state. [Diagram 2] FIG. 2 is a partial perspective view showing a support component according to the present invention. [Diagram 3] FIG. 3 is an enlarged cross-sectional view taken along line AA in FIG. 2. [Figure 4] FIG. 4 is a cross-sectional view taken along line BB in FIG. [Diagram 5] FIG. 4 is a front view showing a first spacer and a second spacer which are integrally connected to each other. [Figure 6] 2 is an enlarged vertical cross-sectional view showing a portion of the wedge fastening type temporary scaffolding of FIG. 1 in which the insert fittings at both ends of the fabric material are inserted into the socket fittings and fastened together. FIG. [Figure 7] 7 is a view equivalent to FIG. 6 showing a state in which the insert metal fittings at both ends of the fabric material are inserted into the socket metal fittings and are in an unfastened state. FIG. [Figure 8] FIG. 11 is a front view showing a first modified example of the first spacer and the second spacer of the pillar constituent member according to the present invention. [Figure 9] FIG. 11 is a front view showing a second modified example of the first spacer and the second spacer of the pillar constituent member according to the present invention. [Figure 10] FIG. 13 is a front view showing a third modified example of the first spacer and the second spacer of the pillar constituent member according to the present invention. [Figure 11] 11 is a view corresponding to FIG. 6 and showing a support component provided with the first spacer and the second spacer shown in FIG. 10. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0028] The same objects and parts are designated by the same reference numerals throughout the drawings.

[0029] Fig. 1 shows a wedge-fastened temporary scaffolding equipped with a support made of the support component of the present invention, Fig. 2 to Fig. 4 show the support component of the present invention, Fig. 5 shows the first spacer and the second spacer which are integrally connected, Fig. 6 shows the case where the insert metal fittings at both ends of the fabric material are inserted into the socket metal fittings in a fastened state, and Fig. 7 shows the same in an untightened state.

[0030] In the following description, the left and right sides of Fig. 1 and Figs. 3 to 6 will be referred to as left and right sides.

[0031] In Fig. 1, the wedge-fastening temporary scaffolding (1) comprises a plurality of upright supports (2) spaced apart from one another in the left-right direction and in the front-to-back direction of the paper surface of Fig. 1, and a fabric material (3) that is disposed between adjacent supports (2) and has both ends detachably attached to the supports (2). Note that Fig. 1 only shows the two supports (2) on the left and right and the one fabric material (3) disposed between the supports (2).

[0032] The post (2) is made of a post-constituting member (10) according to the present invention. The post-constituting member (10) is made of a cylindrical post member (11) and four socket fittings (12A) (12B) that are U-shaped in plan view and fixed to the outer circumferential surface of the post member (11) at equal angular intervals in the circumferential direction, and is provided with a plurality of socket fitting groups (13) that are spaced apart in the longitudinal direction of the post member (11). The post (2) is formed by a plurality of post members (11) arranged vertically with their longitudinal direction facing vertically and adjacent ones connected to each other, or by a single post-constituting member (10). Insert fittings (4) are provided in a hanging manner at both ends of the fabric material (3), and the insert fittings (4) are inserted from above into the socket fittings (12A) (12B) of the post-constituting member (10) of the post (2) and are held in a tightly fastened state by a wedge action.

[0033] As shown in Figures 2 to 4, each socket fitting group (13) provided on the pillar member (11) of the pillar component (10) consists of two first socket fittings (12A) located on one diameter of the pillar member (11) and two second socket fittings (12B) located on another diameter perpendicular to the one diameter of the pillar member (11), and the two first socket fittings (12A) are at the same height and the two second socket fittings (12B) are at the same height and at a higher height than the first socket fittings (12A).

[0034] The socket fittings (12A) and (12B) are made up of a pair of flange portions (14) with a notch (141) formed in the vertical middle of their tips, and a web portion (15) that connects the flange portions (14) together, and the tips of the flange portions (14) are fixed to the pillar member (11). The pillar member (11) and the socket fittings (12A) and (12B) form an insertion space (16) that opens upward and into which an insert fitting (4) provided on the fabric material (3) of the temporary scaffolding (1) is inserted. The web portion (15) of the socket fittings (12A) and (12B) and the edges of the flange portions (14) on the web portion (15) side are each inclined downward toward the pillar member (11). The flange portions (14) and the web portion (15) of the socket fittings (12A) and (12B) are formed with through holes (142) and (151), respectively, for weight reduction.

[0035] A first spacer (17) having a receiving portion (171) against which the insert metal fitting (4) of the fabric material (3) is pressed when fastened is disposed within each socket fitting (12A) (12B) and fixed to the pillar member (11). Also, a second spacer (18) having an abutment portion (181) against which the insert metal fitting (4) of the fabric material (3) is abutted when fastened is disposed at a height position above the upper end of each socket fitting (12A) (12B) and fixed to the pillar member (11).

[0036] As shown in Figs. 2 to 5, the first spacer (17) has a horizontal cross section of an arc shape with the center of curvature at the center of the pillar member (11), a constant thickness in the radial direction of the pillar member (11), and a plate-like main body portion (172) disposed between the tips of both flange portions (14) of the socket fittings (12A) and (12B) and following a part of the outer circumferential surface of the pillar member (11). The widths of the portions of the main body portion (172) having a constant length from the upper and lower ends are gradually narrowed toward the respective tips. The receiving portion (171) is integrally formed in the center of the width direction of the main body portion (172) with its longitudinal direction facing the up-down direction, and bulges toward the web portion (15) of the socket fittings (12A) and (12B). The lower end of the receiving portion (171) is located at a height position slightly higher than the lower end of the main body portion (172). The receiving portion (171) is formed integrally with the main body portion (172) by deforming the main body portion (172), and the wall thickness of the main body portion (172) and the receiving portion (171) are equal. The surface of the receiving portion (171) facing the web portion (15) has a horizontal cross-sectional arc shape with the center of curvature at the center of the pillar member (11). The radius of curvature of the surface of the receiving portion (171) facing the web portion (15) of the socket fittings (12A) and (12B) is half the outer diameter of a support having a normal outer diameter before weight reduction is achieved.

[0037] Convex pieces (173) that fit into the notches (141) of both flanges (14) of the socket fittings (12A) and (12B) are integrally provided on both side edges of the main body (172) of the first spacer (17). Then, with the convex pieces (171) of the spacer (17) fitted into the notches (141) of both flanges (14) of the socket fittings (12A) and (12B), the portions of the ends of both flanges (14) of the socket fittings (12A) and (12B) excluding the notches (141) and the convex pieces (171) of the spacer (17) are joined to the pillar member (11) by weld metal (not shown) formed across both.

[0038] The second spacer (18) has a plate-shaped main body (182) that has a horizontal cross section of an arc shape with the center of curvature at the center of the pillar member (11), has the same thickness as the main body (172) of the first spacer (17) in the radial direction of the pillar member (11), and fits along a part of the outer circumferential surface of the pillar member (11). The width of the main body (182) is narrower than the width of the main body (172) of the first spacer (17), and the centers of the main bodies (172) and (182) in the width direction are aligned. The abutting portion (181) is integrally formed in the center of the main body (182) in the width direction with its longitudinal direction facing up and down, and bulges toward the fabric material (3). The upper end of the abutting portion (181) is located at a height position slightly lower than the lower end of the main body (182). The abutment portion (181) is formed integrally with the main body portion (182) by deforming the main body portion (182), and the wall thicknesses of the main body portion (182) and the abutment portion (181) are equal. The width of the abutment portion (181) is equal to the width of the receiving portion (171) of the first spacer (17), and the centers of the receiving portion (171) and the abutment portion (181) in the width direction are aligned. The surface of the abutment portion (181) facing the fabric material (3) has a horizontal cross-sectional arc shape with the center of curvature at the center of the pillar member (11).

[0039] The body portion (172) and the receiving portion (171) of the first spacer (17) are located within the height direction range of the socket fittings (12A) and (12B), and the lower ends of the body portion (172) and the receiving portion (171) are located slightly below the lower ends of the socket fittings (12A) and (12B). The upper ends of the body portion (182) and the abutment portion (181) of the second spacer (18) are located above the center of the fabric material (3) in the up-down direction.

[0040] The first spacer (17) and the second spacer (18) are integrated and are formed integrally by processing one material. The main body (182) of the second spacer (18) is connected to the center of the upper end of the main body (172) of the first spacer (17) in the width direction, and the abutment portion (181) of the second spacer (18) is connected directly to the upper end of the receiving portion (171) of the first spacer (17). The lower ends of the main body (172) and receiving portion (171) of the first spacer (17) are located slightly below the lower ends of the socket fittings (12A) and (12B), and the upper ends of the main body (182) and receiving portion (181) of the second spacer (18) are located slightly above the center of the fabric material (3) in the vertical direction.

[0041] 6 and 7 show enlarged views of a portion of the wedge fastening type temporary scaffolding (1) shown in FIG. 1, with FIG. 6 showing the insert fitting (4) fastened within the socket fittings (12A) and (12B), and FIG. 7 showing the insert fitting (4) untightened within the socket fittings (12A) and (12B).

[0042] As shown in Fig. 6, the insert metal fitting (4) is composed of a wedge holding member (5) having a fixed length in the vertical direction, and a wedge (6) having a fixed length in the vertical direction and held by the wedge holding member (5) so as to be movable up and down. Only the insert metal fitting (4) provided at the right end of the fabric material (3) will be explained below. The insert metal fitting (4) provided at the left end of the fabric material (3) is symmetrical to the insert metal fitting (4) at the right end.

[0043] The wedge holding member (5) has a generally U-shaped cross section (horizontal cross section) that opens to the left (the center of the longitudinal direction of the fabric material (3)), a constant length in the vertical direction, and a constant width in the circumferential direction of the pillar member (11), and has a plate-shaped base portion (51) with an arc-shaped horizontal cross section that fits the receiving portion (171) of the first spacer (17) and the abutting portion (181) of the second spacer (18), a pair of protruding walls (52) that are integrally formed on both side edges in the width direction of the base portion (51) and protrude to the left, and a protruding piece (53) that is integrally formed with the lower ends of the base portion (51) and both protruding walls (52) and protrudes to the left from the protruding walls (52). A circular through hole (54) is formed in the upper end of the base portion (51). A convex portion (55) that protrudes to the left is provided at the upper end of the protruding wall (52), and in a portion below the convex portion (55), the right end face of the fabric material (3) is abutted against the upper portion of the protruding wall (52) and the convex portion (55) is engaged with the upper end of the outer circumferential surface of the right end portion of the fabric material (3), and the fabric material (3), the protruding wall (52), and the convex portion (55) are fixed by welding. In this state, the upper end of the abutment portion (181) of the second spacer (18) is located above the center of the fabric material (3) in the up-down direction.

[0044] An engagement portion (56) that projects leftward and engages with the upper ends of the web portions (15) of the socket fittings (12A) and (12B) is provided at a vertically intermediate portion of the protruding wall (52) of the wedge holding member (5) and below the fabric material (3). The wedge holding member (5) is inserted from above into the insertion space (16) of the socket fittings (12A) and (12B) so that its lower end projects downward beyond the socket fittings (12A) and (12B) and its portion above the engagement portion (56) is positioned above the socket fittings (12A) and (12B). The wedge retaining member (5) is retained by the socket fittings (12A) and (12B) with the base portion (51) fitting along the left side surface of the receiving portion (171) of the first spacer (17) and the left side surface of the abutment portion (181) of the second spacer (18) and the engagement portion (56) engaging with the upper end of the web portion (15) of the socket fittings (12A) and (12B) and the protruding wall (52) not in contact with the web portion (15) of the socket fittings (12A) and (12B).

[0045] The wedge (6) is longer than the wedge holding member (5) and is housed inside the wedge holding member (5) so as to be movable in the vertical direction with its longitudinal direction facing the vertical direction. The wedge (6) has a first pressure contact portion (61) at the left side of the lower part that can be pressed against the inner surface of the web portion (15) of the socket metal fitting (12A) (12B), and a second pressure contact portion (62) at the right side below the first pressure contact portion (61) that can be pressed against the protruding end edge of the protruding piece (53) of the wedge holding member (5). The first pressure contact portion (61) is inclined downward to the right, and its vertical length is slightly longer than the vertical length of the socket metal fitting (12A) (12B). The second pressure contact portion (62) is inclined downward to the left, and its vertical length is longer than the thickness of the protruding piece (53). The lower end surface of the wedge (6) is rounded so as to protrude downward. A guide portion (63) that is continuous with the lower end surface of the wedge (6) and inclines upward and to the right is provided on the right side surface of the wedge (6) below the second pressure contact portion (62).

[0046] As shown in Figure 7, when the wedge (6) is not fastened, its lower end is received by the protruding piece (53) of the wedge holding member (5) and its upper part protrudes above the wedge holding member (5), so that the first pressure contact portion (61) is not pressed against the inner surface of the web portion (15) of the socket fittings (12A) (12B) and the second pressure contact portion (62) is not pressed against the protruding end edge of the protruding piece (53) of the wedge holding member (5).

[0047] A compression coil spring (7) is disposed between the upper portion of the wedge (6) and the upper end of the wedge holding member (5), which biases the upper portion of the wedge (6) toward the fabric material (3) to hold the wedge (6) in an untightened state. One end of the compression coil spring (7) is fitted into a circular through hole (54) in the base portion (51) of the wedge holding member (5). A retaining piece (57) is provided above the circular through hole (54) in the base portion (51) so that the compression coil spring (7) comes into contact with the compression coil spring (7) when the wedge (6) is moved upward relative to the wedge holding member (5), thereby preventing the compression coil spring (7) from coming out of the circular through hole (54).

[0048] The transition from the untightened state to the fastened state is achieved by driving the wedge (6) downward from the untightened state, and the guide portion (63) moving downward while sliding against the protruding piece (53), so that the lower end portion protrudes below the wedge holding member (5). At this time, the first pressure contact portion (61) is pressed against the inner surface of the web portion (15) of the socket fittings (12A) and (12B), and the second pressure contact portion (62) is pressed against the protruding end edge of the protruding piece (53) of the wedge holding member (5). As a result, the portion of the base portion (51) of the wedge holding member (5) present inside the socket fittings (12A) and (12B) is pressed against the receiving portion (171) of the first spacer (17), and as a result, the insert fitting (4) is stretched between the web portion (15) of the socket fittings (12A) and (12B) and the spacer (17) to be in a fastened state. At the same time, the portion of the base portion (51) of the wedge retaining member (5) of the insert metal fitting (4) that is located above the socket metal fittings (12A) (12B) is pressed against the abutment portion (181) of the second spacer (18), so that the horizontal force applied to the support (2) acts directly on the fabric material (3) via the wedge retaining member (5) of the insert metal fitting (4).

[0049] Furthermore, in a wedge-tightened temporary scaffolding (1) equipped with a support (2) made of the support component (10) of this invention, even if the diameter of the support component (10) used is reduced, as long as the radius of curvature of the surface facing the web portion (15) of the receiving portion (171) of the first spacer (17) is made equal to 1 / 2 the outer diameter of a support component having a normal outer diameter, the wedge retaining members (5) provided at both ends of the fabric material (3) made to fit a support component having a normal outer diameter can be inserted into the insertion spaces (16) of the socket fittings (12A) (12B) and retained in a fastened state by the wedge action.

[0050] Furthermore, when horizontal force is continuously applied to the support (2) due to shaking or vibration, the horizontal force applied to the support (2) is transmitted directly to the fabric material (3) via the portion of the wedge retaining member (5) of the insert metal fitting (4) that protrudes upward beyond the socket metal fittings (12A) and (12B). Therefore, it is possible to prevent the application of an upward force to the insert metal fitting (4) that would loosen the fastening force created by the wedge action.

[0051] 8 to 10 show modified examples of the first spacer and / or the second spacer of the pillar-constituting member.

[0052] In Figure 8, the first spacer (20) arranged in the socket fittings (12A) (12B) is equipped with a receiving portion (21) against which the insert fitting (4) of the fabric material (3) is pressed during fastening, and a plate-shaped main body portion (22) which has an arc-shaped horizontal cross section with the center of the pillar member (11) as the center of curvature and has a constant thickness in the radial direction of the pillar member (11), is arranged between the tips of the two flange portions (14) of the socket fittings (12A) (12B), and follows a part of the outer circumferential surface of the pillar member (11).

[0053] The vertical length of the body portion (22) is slightly longer than the height of the socket fittings (12A) and (12B), and the upper and lower ends are located outside the socket fittings (12A) and (12B). The width of the portion of the body portion (22) located inside the socket fittings (12A) and (12B) is constant overall, and a convex piece (23) that protrudes laterally is integrally formed at both the upper and lower ends of both side edges of the constant width portion. Although not shown in the figure, a notch is formed at both the upper and lower ends of both flange portions (14) of the socket fittings (12A) and (12B), and the convex piece (23) is adapted to fit into the notch.

[0054] The receiving portion (21) of the first spacer (20) has the same structure as the receiving portion (171) of the first spacer (17) shown in FIGS.

[0055] The second spacer (18), which is disposed at a height position higher than the upper ends of the socket metal fittings (12A) and (12B) and fixed to the pillar member (11), and has an abutment portion (181) against which the insert metal fitting (4) of the fabric material (3) abuts when fastened, has the same configuration as the second spacer (18) shown in Figures 2 to 5 and is integrated with the first spacer (20). The main body portion (182) of the second spacer (18) is connected to the center portion in the width direction of the upper end of the main body portion (22) of the first spacer (20), and the abutment portion (181) of the second spacer (18) is connected straight to the upper end of the receiving portion (21) of the first spacer (20).

[0056] In Figure 9, a first spacer (30) is disposed within the socket fittings (12A) (12B) and fixed to the pillar member (11), and has a receiving portion (31) against which the insert fitting (4) of the fabric material (3) is pressed when fastened, and a second spacer (40) is disposed at a height position above the upper ends of each socket fitting (12A) (12B) and fixed to the pillar member (11), and has an abutment portion (41) against which the insert fitting (4) of the fabric material (3) is abutted when fastened. These are formed separately. The first spacer (30) has an arc-shaped horizontal cross section with the center of the pillar member (11) as the center of curvature, a constant thickness in the radial direction of the pillar member (11), and is provided with a plate-shaped main body portion (32) that is disposed between the tips of the flange portions (14) of the socket fittings (12A) and (12B) and follows a portion of the outer circumferential surface of the pillar member (11).

[0057] The length of the main body 32 in the vertical direction is slightly longer than the height of the socket fittings 12A and 12B, and the upper and lower ends are located outside the socket fittings 12A and 12B. The width of the portion of the main body 32 located inside the socket fittings 12A and 12B is constant overall, and a convex piece 33 that fits into the notches 141 of both flanges 14 of the socket fittings 12A and 12B is integrally provided at the vertical center of both side edges of the constant width portion. The convex pieces 33 of the first spacer 30 are adapted to fit into the notches 141 of both flanges 14 of the socket fittings 12A and 12B.

[0058] The receiving portion (31) of the first spacer (30) has an upper end located below the upper end of the main body portion (32) and a lower end located above the lower end of the main body portion (32). The other configuration of the receiving portion (31) is similar to that of the receiving portion (171) of the first spacer (17) shown in Figures 2 to 5.

[0059] The second spacer (40) is separate from the first spacer (30) and has a similar configuration to the abutment portion (171) and main body portion (172) of the second spacer (17) shown in Figures 2 to 5, except that the abutment portion (41) and the plate-shaped main body portion (42) on which the abutment portion (41) is provided are formed separately from the abutment portion (31) and the plate-shaped main body portion (32) of the first spacer (30). The upper ends of the main body portion (42) and the abutment portion (41) of the second spacer (40) are located above the center portion of the fabric material (3) in the up-down direction, and similarly, the lower ends are located below the lower end of the fabric material (3).

[0060] 10 and 11, a first spacer (80) having a receiving portion (81) against which the insert metal fitting (4) of the fabric material (3) is pressed when fastened is disposed in the vertical middle of each socket fitting (12A) (12B) and fixed to the pillar member (11). Also, a second spacer (90) having an abutment portion (91) against which the insert metal fitting (4) of the fabric material (3) is abutted when fastened is disposed at a height position above the upper end of each socket fitting (12A) (12B) and fixed to the pillar member (11).

[0061] The first spacer (80) is cylindrical and shorter than the socket fittings (12A) and (12B) with its center coinciding with the center of the pillar member (11). The first spacer (80) is fitted over the pillar member (11) so as to be located within the height range of the socket fittings (12A) and (12B) of each socket fitting group (13), and is fixed to the pillar member (11) in a state in which the first spacer (80) is passed through notches (143) formed at the tip ends of both flange portions (14) of the socket fittings (12A) and (12B). A receiving portion (81) is provided on a portion of the outer circumferential surface of the first spacer (80).

[0062] The second spacer (90) is cylindrical, shorter than the second socket fitting (12B) and with its center coinciding with the center of the pillar member (11), and is formed separately from the first spacer (80). An abutment portion (91) is provided on a portion of the outer circumferential surface of the second spacer (90).

[0063] The second spacer (90), which is disposed above the first spacer (80) located within the height direction range of the first socket fitting (12A), is located within the height direction range of the second socket fitting (12B) and also serves as the first spacer (80) having a receiving portion (81) against which the insert fitting (4) of the fabric material (3) inserted into the second socket fitting (12B) is pressed when fastened. Therefore, on the outer circumferential surface of the second spacer (90), there is provided the receiving portion (81) against which the portion of the insert fitting (4) inserted into the second socket fitting (12B) is pressed when fastened, and an abutment portion (91) against which the portion of the insert fitting (4) protruding above the first socket fitting (12A) is abutted when fastened. [Industrial Applicability]

[0064] The support component of the present invention is suitably used as a support for a wedge-fastening type temporary scaffold. [Explanation of symbols]

[0065] (1): wedge-fastened temporary scaffolding, (2): support, (3): fabric material, (4): insert metal fitting, (10): support component, (11): pillar member, (12A)(12B): socket metal fitting, (13): socket metal fitting group, (14): flange portion, (15): web portion, (16): insertion space, (17): first spacer, (171): receiving portion, (172): main body portion, (18): second spacer, (181): abutment portion, (182): main body portion, (20)(30)(80): first spacer, (21)(31)(81): receiving portion, (22)(32): main body portion, (40)(90): second spacer, (41)(91): abutment portion.

Claims

1. A wedge-fastening type temporary scaffolding support component comprises a cylindrical column member and a group of four socket fittings each having a U-shape in plan view and fixed at equiangular intervals in the circumferential direction to the outer circumferential surface of the column member, the socket fittings comprising a pair of flange portions and a web portion integrally connecting both flange portions, and the tips of both flange portions are fixed to the column member, and an insertion space that is open upward and into which an insert fitting provided on a fabric material of the temporary scaffolding can be inserted is formed by the column member and the socket fittings, a first spacer having a receiving portion against which a portion of the insert fitting inserted into the socket fitting is pressed during fastening is disposed within at least a range of the overall height of each socket fitting and fixed to the pillar member; a second spacer having an abutment portion against which a portion of the insert fitting protruding above the socket fitting when fastened is abutted at a height position above the upper end of each socket fitting and fixed to the pillar member; A wedge-fastening type temporary scaffolding support component, wherein the first spacer has a plate-shaped main body portion which has an arc-shaped horizontal cross section with the center of curvature at the center of the column member and which conforms to the outer peripheral surface of the column member, the receiving portion is formed integrally with the main body portion of the first spacer and bulges toward the web portion of the socket fitting, the horizontal cross section of the surface of the receiving portion facing the web portion of the socket fitting is an arc-shaped horizontal cross section with the center of curvature at the center of the column member, and the main body portion and receiving portion of the first spacer have the same thickness.

2. A column component for a wedge-fastened erection scaffold as described in claim 1, wherein the second spacer has a plate-shaped main body portion which is arc-shaped in horizontal section with the center of curvature at the center of the column member and which conforms to the outer peripheral surface of the column member, the abutment portion is formed integrally with the main body portion of the second spacer and bulges toward the web portion side of the socket fitting, the horizontal cross-sectional shape of the surface of the abutment portion facing the web portion side of the socket fitting is arc-shaped with the center of curvature at the center of the column member, and the thickness of the main body portion of the second spacer and the thickness of the abutment portion are equal.

3. A column component for a wedge-tightened erection scaffolding as described in claim 2, wherein the abutment portion of the second spacer is positioned so as to be located at least within the range between the lower end of the fabric material and the center in the vertical direction.

4. A column component for a wedge-tightened erection scaffold as described in claim 2, wherein the second spacer is formed integrally with the first spacer, and the main body portion of the first spacer and the main body portion of the second spacer, and the receiving portion of the first spacer and the abutment portion of the second spacer are each integrated.

5. A support component for a wedge-tightened erection scaffold as described in claim 2, wherein the second spacer is formed separately from the first spacer.

6. A column component for a wedge-fastening type temporary scaffolding, comprising a cylindrical column member and a group of four socket fittings each having a U-shape in plan view and fixed at equal angular intervals in the circumferential direction to the outer circumferential surface of the column member, the socket fittings comprising a pair of flange portions and a web portion integrally connecting both flange portions, the tips of both flange portions being fixed to the column member, and an insertion space which opens upward and into which an insert fitting provided in a fabric material of the temporary scaffolding can be inserted is formed by the column member and the socket fittings, a first spacer having a receiving portion against which a portion of the insert fitting inserted into the socket fitting is pressed during fastening is disposed within at least a range of the overall height of each socket fitting and fixed to the pillar member; a second spacer having an abutment portion against which a portion of the insert fitting protruding above the socket fitting when fastened is abutted at a height position above the upper end of each socket fitting and fixed to the pillar member; a first spacer which is shorter than the socket fitting and has a cylindrical shape with its center coinciding with the center of the pillar member, the first spacer being fitted over the pillar member so as to be located within the height range of the socket fitting and fixed to the pillar member, a receiving portion being provided on a portion of the outer circumferential surface of the first spacer, and a second spacer which is cylindrical with its center coinciding with the center of the pillar member and formed separately from the first spacer, the second spacer being fitted over the pillar member and fixed to the pillar member, and an abutment portion being provided on a portion of the outer circumferential surface of the second spacer.

7. A column component for a wedge fastening type erection scaffolding as described in claim 6, wherein each socket fitting group comprises two first socket fittings located on one diameter of the column member and two second socket fittings located on another diameter perpendicular to the one diameter of the column member, the two first socket fittings are at the same height and the two second socket fittings are at the same height and at a higher height than the first socket fittings, a second spacer arranged above a first spacer located within the height range of the first socket fittings also serves as a first spacer located within the height range of the second socket fittings, and the outer surface of the second spacer is provided with a receiving portion against which a portion of the insert fitting inserted into the second socket fitting is pressed when fastened, and an abutment portion against which a portion of the insert fitting protruding above the first socket fittings is abutted when fastened.

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