Scaffolding connectors and the large-scale assembly and large-scale sweeping methods using them

Abstract

To provide a scaffold connector capable of easily managing a connection state between a mounting flange of a support and a wedge member by use of a connection member.SOLUTION: A scaffold connector 1 includes a body member 2, a wedge member 3, and a connecting member 4. The body member 2 supports the wedge member 3 to be movable between a connection position P2 located in a wedge insertion hole 102a of a mounting flange 102 and a separation position P1 not located in the wedge insertion hole 102a. The body member 2 movably supports the connecting member 4 between a regulation position P3 where the connecting member 4 is positioned by the power F transmitted through a hanging tool W and a release position P4 where the connecting member 4 is positioned in a state where the power F transmitted through the hanging tool W is not applied. The connecting member 4 is in contact with the wedge member 3 located at the connection position P2, at the regulation position P3 to restrict the movement of the wedge member 3 to the separation position P1 and does not contact the wedge member 3 at the release position P4.SELECTED DRAWING: Figure 10

Description

[Technical field]

[0001] The present invention relates to a scaffolding connector and a large-scale assembly method and a large-scale sweeping method using the same. [Background technology]

[0002] A temporary scaffold is a work scaffold that is set up around a building at a construction site for, for example, construction work or maintenance work on the building. The temporary scaffold is removed when the construction work or maintenance work is completed. Therefore, the temporary scaffold is configured so that workers can easily set up and dismantle it at the construction site. The temporary scaffold is made up of various components such as supports, horizontal members, scaffolding boards, and braces that are assembled around the building by workers.

[0003] When erecting the temporary scaffolding, a construction method known as the large-scale assembly method is used in which a scaffolding that has been partially assembled on the ground in advance (hereinafter, the partially assembled scaffolding will be referred to as a "scaffolding block") is stacked on top of an existing temporary scaffolding. In addition, in the dismantling work, a construction method known as the large-scale removal method is used in which a scaffolding block is lowered to the ground from the existing temporary scaffolding and dismantled into each component on the ground. The large-scale assembly method or the large-scale removal method improves safety during the assembly and dismantling of the temporary scaffolding, because the scaffolding blocks are assembled and dismantled on the ground.

[0004] The scaffolding block is placed on the existing temporary scaffolding from the ground by a lifting device such as a crane, or is lowered from the existing temporary scaffolding to the ground. The scaffolding block is suspended from the lifting device via a hoisting tool such as a wire rope. In this case, a scaffolding connector that connects the scaffolding block and the hoisting tool has been proposed (see Patent Document 1).

[0005] The scaffolding connector of Patent Document 1 is attached to a support provided with a flange having an engagement hole. The scaffolding connector includes a main body portion consisting of a pair of trapezoidal members, and a wedge member. The main body portion supports a shackle for connecting the sling. The main body portion also includes a first support pin and a second support pin for supporting the wedge member, a recess into which the flange is inserted, and a connecting member for connecting the pair of trapezoidal members. The wedge member is supported between the pair of trapezoidal members and movable in the up and down direction relative to the main body portion.

[0006] When the scaffolding connector is attached to the support, the flange is inserted into the recess of the main body with the wedge member pulled upward. Next, the wedge member is inserted into the engagement hole of the flange inserted from the recess of the scaffolding connector. Finally, the upper end of the wedge member of the scaffolding connector is struck with a hammer or the like, so that the wedge member is firmly fitted into the engagement hole of the flange. This connects the main body of the scaffolding connector to the support so as to cover the flange. The scaffolding block can be lifted using this scaffolding connector. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] JP 2016-20623 A Summary of the Invention [Problem to be solved by the invention]

[0008] Incidentally, in the scaffolding connector described in Patent Document 1, the wedge member is driven in with a hammer or the like to fit into the engagement hole of the flange. In other words, the wedge member is held in the engagement hole of the flange by frictional force due to the wedge effect. Therefore, the frictional force generated between the flange and the wedge member varies depending on the driving force of the hammer or the like, the shape of the wedge member and the flange, and the like. For this reason, it is difficult to manage the connection state between the flange and the wedge member in the scaffolding connector. Therefore, there is a demand for a scaffolding connector that makes it easy to manage the connection state between the flange and the wedge member.

[0009] An object of the present invention is to provide a scaffolding connector that makes it easy to manage the connection state between the flange of the support and the wedge member. [Means for solving the problem]

[0010] A scaffolding connector according to one embodiment of the present invention is a scaffolding connector that is attached to a mounting flange having a wedge insertion hole provided on a support and is for connecting the support to a lifting device that lifts the support. The scaffolding connector includes a main body member having a flange insertion hole into which the mounting flange is inserted, a wedge member that is inserted into the wedge insertion hole of the mounting flange, and a connection member that connects a lifting device.

[0011] The body member supports the wedge member movably between a coupled position in which the wedge member is positioned within the wedge insertion hole of the flange inserted through the flange insertion hole of the body member and a separated position in which the wedge member is not positioned within the wedge insertion hole. The body member also supports the connection member movably between a restricted position in which the connection member is positioned when a force is applied from the suspending device and a released position in which the connection member is positioned when no force is applied from the suspending device.

[0012] The connecting member, at the restricting position, comes into contact with the wedge member located at the coupled position to restrict movement of the wedge member to the separated position, and does not come into contact with the wedge member at the released position.

[0013] In the above-mentioned configuration, when the wedge member of the scaffolding connector is in a connection position where it is connected to the mounting flange of the support, the connection member of the scaffolding connector moves to a restriction position when a force is applied from a lifting device. The connection member that has moved to the restriction position restricts the movement to a separation position where the wedge member is not connected to the mounting flange. In other words, the scaffolding connector holds the wedge member in the connection position by utilizing a force applied to the connection member from a lifting device or the like. Furthermore, when no force is applied to the lifting device, the scaffolding connector makes it possible to move the wedge member to the separation position by utilizing gravity. The scaffolding connector can visually confirm the connection state based on the position of the connection member. This makes it easy to manage the connection state between the mounting flange of the support and the wedge member by the connection member.

[0014] According to another aspect, the scaffolding connector of the present invention preferably includes the following configuration: the main body member has a guide slot that guides the connecting member from the restricting position to the releasing position, and a guide hole that movably supports the wedge member.

[0015] In the above-mentioned configuration, the connecting member is supported by the guide slot so as to be movable from the restricted position to the released position depending on the presence or absence of force from the hoist. Therefore, the scaffold connector indicates the connection state of the wedge member by the position of the connecting member. This makes it easy to manage the connection state between the mounting flange of the support and the wedge member by the connecting member.

[0016] According to another aspect, the scaffolding connector of the present invention preferably includes the following configuration: In the main body member, the restricting position in the guide slot and the releasing position in the guide slot are positioned horizontally apart, and the restricting position is positioned vertically above the releasing position.

[0017] In the above-mentioned configuration, the guide slot connecting the restricting position and the releasing position is inclined downward from the restricting position toward the releasing position. Therefore, when no force is applied from the lifting device, the connecting member moves from the restricting position toward the releasing position by gravity. In other words, when the scaffolding connector is not lifting the scaffolding block, the scaffolding connector switches to a state in which the wedge member can be moved to the separation position. This makes it easy to manage the connection state between the mounting flange of the support and the wedge member by the connecting member.

[0018] From another viewpoint, the scaffolding connector of the present invention preferably includes the following configuration: the wedge member includes a guide portion supported in a guide hole of the main body member so as to be movably supported between the connecting position and the separating position, a flange insertion portion extending from the separating position toward the connecting position and inserted into a wedge insertion hole of the mounting flange at the connecting position, a notch portion opening from the connecting position toward the separating position and into which the connecting member located at the releasing position at the separating position is inserted, and a contact portion contacting the connecting member located at the restricting position at the connecting position.

[0019] In the above-described configuration, the movement range of the wedge member on the main body member changes depending on the position of the connecting member, whereby the connecting member can easily manage the connection state between the flange of the support and the wedge member.

[0020] From another viewpoint, the scaffolding connector of the present invention preferably includes the following configuration: The main body member includes a base having the flange insertion hole and extending in the axial direction of the support, a pair of circumferential side portions extending from both ends of the support in the circumferential direction of the base in the insertion direction of the flange insertion hole and having the guide long hole, and a pair of axial side portions extending from both ends of the support in the axial direction of the base in the insertion direction of the flange insertion hole and having the guide hole. The wedge member is supported by the pair of axial side portions, with the flange insertion portion, the cutout portion and the contact portion positioned between the pair of circumferential side portions and between the pair of axial side portions. A portion of the connection member is positioned between the pair of circumferential side portions and between the pair of axial side portions, and is supported by the pair of circumferential side portions.

[0021] In the above-described configuration, the connecting member is supported by the main body in a state where a part of the connecting member can be seen from outside the main body, which makes it easy to manage the connection state between the flange of the support and the wedge member by the connecting member.

[0022] According to another aspect, the scaffolding connector of the present invention preferably includes the following configuration: The scaffolding connector has a holding member that holds the connection member in the restricted position.

[0023] In the above-mentioned configuration, the connecting member is held in the restricted position by the holding member regardless of the presence or absence of force from the hoisting tool. Therefore, the wedge member is always held in the connected position. This makes it easy to manage the connection state between the flange of the support and the wedge member by the holding member.

[0024] According to another aspect, in the large-scale assembly method, the scaffolding block constituting a part of the temporary scaffolding is assembled to another temporary scaffolding using the above-mentioned scaffolding connector. In the large-scale sweeping method, the scaffolding block constituting a part of the temporary scaffolding is detached from another temporary scaffolding using the above-mentioned scaffolding connector. In the large-scale assembly method or the large-scale sweeping method, by using the scaffolding connector, the connection state between the scaffolding block and the scaffolding connector can be visually confirmed from the outside when the scaffolding block is lifted. This makes it easy to manage the connection state between the mounting flange of the support and the wedge member by the connecting member. Effect of the Invention

[0025] According to one embodiment of the present invention, the connection state between the flange of the support and the wedge member can be easily managed by the connecting member. [Brief description of the drawings]

[0026] [Figure 1] FIG. 1 is a perspective view showing a scaffolding block in which a scaffolding connector according to an embodiment of the present invention is attached to a support. [Diagram 2] FIG. 2 is a perspective view showing a state in which a scaffolding connector according to an embodiment of the present invention is attached to a mounting flange of a support. [Diagram 3] FIG. 3 is a perspective view of the scaffolding connector according to the first embodiment of the present invention. [Figure 4] FIG. 4 is a left side view showing the scaffolding connector according to the first embodiment of the present invention. [Diagram 5] FIG. 5 is a front side view of the scaffolding connector according to the first embodiment of the present invention. [Figure 6] 6 is a cross-sectional view taken along the line A in FIG. 5, showing a state in which the wedge member is located at the separation position. [Figure 7] 7 is a cross-sectional view taken along the line A in FIG. 5, showing a case where the wedge member is located at the connecting position. [Figure 8] FIG. 8 is a schematic diagram showing a state in which the mounting flange of a pole is inserted into the scaffolding connector according to the first embodiment of the present invention. [Figure 9] FIG. 9 is a schematic diagram showing a state in which the wedge members of the scaffolding connector according to the first embodiment of the present invention have been moved to the connecting position. [Figure 10] FIG. 10 is a schematic diagram showing a state in which a force is applied to the connection member of the scaffolding connector according to the first embodiment of the present invention via a suspender. [Figure 11] FIG. 11 is a perspective view showing a major assembly method for assembling a scaffolding block having a scaffolding connector according to the first embodiment of the present invention attached to a support to a temporary scaffolding, or a major removal method for removing the scaffolding block. [Figure 12] FIG. 12 is a schematic diagram showing a state in which the holding member has been moved to the holding position in the scaffolding connector according to the second embodiment of the present invention. [Figure 13] FIG. 13 is a schematic diagram showing a state in which the holding member has been moved to the non-holding position in the scaffolding connector according to the second embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] Hereinafter, the embodiments of the present invention will be described in detail with reference to the drawings. Note that the same or corresponding parts in the drawings are given the same reference numerals and their description will not be repeated. Furthermore, the dimensions of the components in each drawing do not faithfully represent the actual dimensions of the components and the dimensional ratios of each component.

[0028] In the following description, the columns 101 are arranged with their axial direction in the vertical direction. The axial direction of the columns 101 is referred to as the "up-down direction." The direction of adjacent columns 101 lined up along the building is referred to as the "left-right direction," and the direction perpendicular to the up-down direction and left-right direction is referred to as the "front-rear direction." However, this definition of the directions is not intended to limit the orientation of the scaffolding connector 1 according to the present invention when in use.

[0029] In the following description, the terms "fix," "connect," and "attach" (hereinafter referred to as "fixing") include not only cases where members are directly fixed to each other, but also cases where members are fixed to each other via other members. In other words, in the following description, the terms "fixing" include the meanings of direct and indirect fixing of members to each other.

[0030] (Scaffolding configuration) A scaffolding block 100A in which the scaffolding connector 1 of the present invention is used will be described with reference to Figures 1 and 2. Figure 1 is a perspective view of the scaffolding block 100A in which the scaffolding connector 1 is used. Figure 2 is a perspective view showing the scaffolding connector 1 attached to a mounting flange 102 of a support 101.

[0031] 1 and 2, the scaffolding block 100A is a unit that constitutes a part of the temporary scaffolding 100. A plurality of scaffolding blocks 100A are combined to form the temporary scaffolding 100. The scaffolding block 100A has a support 101, a horizontal member 103, a scaffolding board 104, and a handrail 105 including a brace member 106.

[0032] The pillars 101 are, for example, metal rod-shaped members that are installed on the ground and extend vertically. The pillars 101 are, for example, round pipes that have a circular cross section when viewed in the axial direction. The pillars 101 are continuously arranged at regular intervals in the left-right and front-rear directions when viewed upward in the scaffolding block 100A. The pillars 101 may be arranged to extend vertically from brackets or the like attached to other pillars 101. The pillars 101 can be connected in the axial direction by pipe joints or the like.

[0033] The support pillar 101 is provided with mounting flanges 102 at regular intervals in the axial direction of the support pillar 101. The mounting flanges 102 are flat members having four insertion pieces extending in the radial direction of the support pillar 101 at approximately 90 degree intervals when viewed in the axial direction of the support pillar 101. Each of the four insertion pieces has a wedge insertion hole 102a. When storing, transporting, etc., the multiple support pillars 101 can be bundled compactly by positioning other support pillars 101 between the insertion pieces of the mounting flanges 102.

[0034] The horizontal member 103, which is a horizontal beam, is a member that connects adjacent supports 101 in the left-right and front-rear directions. The horizontal member 103 is, for example, a round pipe having a circular cross section when viewed in the axial direction. The horizontal member 103 has fastening members at both ends that can be fastened to the mounting flanges 102. The horizontal member 103 is connected to the mounting flanges 102 of the adjacent supports 101 by the fastening members, respectively. In this way, the adjacent supports 101 and the horizontal member 103 are configured as structural members of the scaffolding block 100A.

[0035] The horizontal member 103 corresponds to an example of a horizontal beam. The horizontal beam includes members used for handrails 105, diagonal bracing members 106, building frames, fabric frames, beam frames, etc. In addition, the horizontal member 103 is not limited to a member with a double-support structure, and also includes a cantilever member in which a fastening member is attached to only one side of the horizontal beam.

[0036] The scaffolding board 104 has hook members provided at both ends of a rectangular scaffolding board body. The hook members are arc-shaped members that are hooked onto the horizontal members 103. The hook members of the scaffolding board 104 are hung on the horizontal members 103 adjacent to each other in the left-right direction in the scaffolding block 100A. In other words, the scaffolding board 104 is placed between the horizontal members 103 adjacent to each other in the left-right direction in the scaffolding block 100A. As a result, the scaffolding board 104 forms a passageway between the horizontal members 103 adjacent to each other in the left-right direction in the scaffolding block 100A, through which workers can pass.

[0037] The handrail 105, which is a horizontal beam, is hung between adjacent posts 101 in the left-right direction. The handrail 105 is, for example, a round pipe with a circular cross section when viewed in the axial direction. The handrail 105 has fastening members at both ends that can be fastened to the mounting flanges 102. The handrail 105 is connected to the mounting flanges 102 between adjacent posts 101 in the left-right direction by the fastening members. In this way, the handrail 105 is hung along the scaffolding boards 104 between adjacent posts 101 in the left-right direction in the scaffolding block 100A.

[0038] The diagonal brace member 106 is a reinforcing member that increases the strength of the scaffolding block 100A. The diagonal brace member 106 connects adjacent supports 101 in the left-right direction in the scaffolding block 100A. One end of the diagonal brace member 106 is connected to a fastening member of the handrail 105. The other end of the diagonal brace member 106 has a fastening member. The diagonal brace member 106 is connected to the mounting flange 102 of the support 101 to which the handrail 105 is connected, and is connected to the mounting flange 102 of the support 101 adjacent in the left-right direction, which is located below the handrail 105. In this way, the scaffolding block 100A has the adjacent supports 101 in the left-right direction reinforced by the diagonal brace member 106.

[0039] One scaffolding block 100A configured in this manner is lifted by a lifting device (not shown) such as a crane, and assembled to another scaffolding block 100A in the left-right or up-down direction. At this time, a lifting tool W of a lifting device is connected to the scaffolding block 100A via a scaffolding connector 1. The scaffolding connector 1 is connected to an attachment flange 102 of a support 101. The scaffolding block 100A is connected to the lifting device via a plurality of scaffolding connectors 1 attached to the plurality of supports 101, respectively.

[0040] (Embodiment 1) Next, a scaffolding connector 1 according to a first embodiment of the scaffolding connector of the present invention will be described with reference to Fig. 3 to Fig. 6. Fig. 3 is a perspective view of the scaffolding connector 1. Fig. 4 is a left side view showing the scaffolding connector 1. Fig. 5 is a front side view of the scaffolding connector 1. Fig. 6 is a cross-sectional view taken along the arrow A in Fig. 5, showing the wedge member 3 at the separation position P1.

[0041] 1 to 5, the scaffolding connector 1 is a connector for connecting a hoisting device W to a scaffolding block 100A. The scaffolding connector 1 is disposed on a support 101 via an attachment flange 102 of the support 101. The scaffolding connector 1 has a main body member 2, a wedge member 3, and a connection member 4.

[0042] The main body member 2 is a housing that supports the wedge member 3 and the connection member 4. The main body member 2 is a box-shaped member. The main body member 2 includes a base portion 2a, a left side portion 2c, a right side portion 2d, an upper side portion 2f, and a lower side portion 2g.

[0043] The base 2a is a side surface of the main body member 2 arranged opposite the support 101. The base 2a is a substantially rectangular side surface. The base 2a has a flange insertion hole 2b into which the mounting flange 102 of the support 101 is inserted with the longitudinal direction facing the axial direction of the support 101. A pair of long sides of the base 2a have a left side portion 2c and a right side portion 2d extending in the insertion direction of the flange insertion hole 2b. A pair of short sides of the base 2a have an upper side portion 2f and a lower side portion 2g extending in the insertion direction of the flange insertion hole 2b. In other words, the left side portion 2c, the right side portion 2d, the upper side portion 2f, and the lower side portion 2g extend in the thickness direction of the base 2a.

[0044] The left side portion 2c and the right side portion 2d are side surfaces of the main body member 2 that support the connection member 4. With the longitudinal direction of the base portion 2a facing the axial direction (up-down direction) of the support 101, the left side portion 2c is located at the left end of the base portion 2a when viewed in the front-rear direction, and the right side portion 2d is located at the right end of the base portion 2a. In other words, the left side portion 2c and the right side portion 2d are located at both ends of the base portion 2a in the circumferential direction of the support 101. Therefore, the left side portion 2c and the right side portion 2d are a pair of circumferential side portions of the main body portion.

[0045] The left side portion 2c and the right side portion 2d each have a guide slot 2e for supporting the connecting member 4 at a position where the left side portion 2c and the right side portion 2d overlap when viewed in the left-right direction. Further, the guide slot 2e is inclined upward as it moves away from the base portion 2a when viewed in the left-right direction. The guide slot 2e guides the connecting member 4.

[0046] The upper side portion 2f and the lower side portion 2g are side surfaces of the main body member 2 that support the wedge member 3. With the longitudinal direction of the base portion 2a facing the axial direction (up-down direction) of the support 101, the upper side portion 2f is located at the upper end of the base portion 2a when viewed in the front-rear direction, and the lower side portion 2g is located at the lower end of the base portion 2a. In other words, the upper side portion 2f and the lower side portion 2g are located at both ends of the base portion 2a in the axial direction of the support 101. Therefore, the upper side portion 2f and the lower side portion 2g are a pair of axial side portions of the main body portion.

[0047] At least one of the upper side portion 2f or the lower side portion 2g is configured to be detachable from the base portion 2a. In this embodiment, the scaffolding connector 1 is fixed to the base portion 2a with the lower side portion 2g being detachable by a bolt or the like. The upper side portion 2f and the lower side portion 2g each have a guide hole 2h that supports the wedge member 3 at an overlapping position when viewed in the vertical direction.

[0048] As shown in Fig. 6, the wedge member 3 is a member that connects to the mounting flange 102 of the support 101. The wedge member 3 is supported by the main body member 2 so as to be movable between a connecting position P2 where the wedge member 3 connects to the mounting flange 102 of the support 101 and a separating position P1 that is above the connecting position P2 and where the wedge member 3 is separated from the mounting flange 102. The wedge member 3 is formed from a plate-like member. The wedge member 3 has an upper guide portion 3a that is a guide portion, a lower guide portion 3b that is a guide portion, a flange insertion portion 3c, a contact portion 3d, and a notch portion 3e.

[0049] The upper guide portion 3a and the lower guide portion 3b are portions that movably support the wedge member 3 by the main body member 2 and limit the movement direction of the wedge member 3. The upper guide portion 3a extends in the upward direction, which is one direction in the vertical direction. The lower guide portion 3b extends in the downward direction, which is the other direction in the vertical direction. The upper guide portion 3a is formed in a band shape having a width that allows it to be inserted into the guide hole 2h of the upper side portion 2f of the main body member 2. The lower guide portion 3b is formed in a band shape having a width that allows it to be inserted into the guide hole 2h of the lower side portion 2g of the main body member 2. The vertical length from the end of the upper guide portion 3a to the end of the lower guide portion 3b is longer than the vertical length from the upper side portion 2f to the lower side portion 2g of the main body portion.

[0050] The flange insertion portion 3c is a portion that is inserted into the wedge insertion hole 102a of the mounting flange 102 of the support 101. The flange insertion portion 3c is located between the upper guide portion 3a and the lower guide portion 3b. The flange insertion portion 3c extends in the direction of the lower guide portion 3b. The flange insertion portion 3c is formed in a band shape having a width that allows it to be inserted into the wedge insertion hole 102a of the mounting flange 102. In other words, the flange insertion portion 3c is a band-shaped member that extends from the separation position P1 in the direction of the connection position P2. The flange insertion portion 3c is formed in a wedge shape in which the width of the band narrows as it extends downward.

[0051] The contact portion 3d is a portion that comes into contact with the connecting member 4. The contact portion 3d is located between the upper guide portion 3a and the lower guide portion 3b. The contact portion 3d extends in the direction of the upper guide portion 3a. The contact portion 3d is formed in a strip shape having a width that allows it to come into contact with the connecting member 4. Therefore, when the connecting portion is located above the contact portion 3d, the contact portion 3d comes into contact with the connecting member 4 as the wedge member 3 moves upward. In other words, the upward movement of the wedge member 3 is restricted by the contact between the contact portion 3d and the connecting member 4.

[0052] The notch portion 3e is a portion that constitutes a space into which the connection member 4 fits. The notch portion 3e is formed closer to the flange insertion portion 3c than the contact portion 3d. The notch portion 3e has a space having a width that allows the connection member 4 to fit therein. The notch portion 3e opens upward. That is, the notch portion 3e opens in the direction from the coupling position P2 to the separation position P1. Therefore, when the connection portion is located above the notch portion 3e, the notch portion 3e takes the connection member 4 into the space of the notch portion 3e by the upward movement of the wedge member 3. That is, the upward movement of the wedge member 3 is not restricted by the connection member 4.

[0053] As shown in FIG. 3 to FIG. 6, the connection member 4 is a member that connects a hoisting tool W for lifting by a lifting device. The connection member 4 has a shaft portion 4a and an arc portion 4b (shackle). The shaft portion 4a is movably inserted into the guide long holes 2e of the left side portion 2c and the right side portion 2d of the main body member 2. In addition, both ends of the shaft portion 4a protrude leftward from the left side portion 2c and protrude rightward from the right side portion 2d. Both ends of the arc portion 4b are connected to both ends of the shaft portion 4a. In other words, the connection member 4 is formed into an annular shape by connecting the shaft portion 4a and the arc portion 4b with the shaft portion 4a inserted into the guide long hole 2e. As a result, the annular connection member 4 surrounds a part of the main body member 2. Therefore, the connection member 4 is connected to the main body member 2 in a state in which it can move within the guide long hole 2e.

[0054] In the scaffolding connector 1, the wedge member 3 is located between the left side portion 2c and the right side portion 2d of the main body member 2 and between the upper side portion 2f and the lower side portion 2g. The upper guide portion 3a of the wedge member 3 is located close to the upper side portion 2f, and the lower guide portion 3b is located close to the lower side portion 2g. The flange insertion portion 3c of the wedge member 3 is located close to the base portion 2a of the main body member 2. The contact portion 3d of the wedge member 3 is located below the long guide hole 2e.

[0055] The upper guide portion 3a of the wedge member 3 is inserted into the guide hole 2h of the upper side portion 2f of the main body member 2. The guide hole 2h of the upper side portion 2f supports the upper guide portion 3a so that it can move in the vertical direction. The lower guide portion 3b of the wedge member 3 is inserted into the guide hole 2h of the lower side portion 2g of the main body member. The guide hole 2h of the lower side portion 2g supports the lower guide portion 3b so that it can move in the vertical direction. In other words, the main body member 2 supports the wedge member 3 so that it can move in the vertical direction between the separation position P1 and the connection position P2. The upper guide portion 3a protrudes upward from the upper side portion 2f of the main body member 2. Similarly, the lower guide portion 3b protrudes downward from the lower side portion 2g of the main body member 2. The portions of the upper guide portion 3a and the lower guide portion 3b that protrude beyond the main body member 2 function as portions that an operator holds when moving the wedge member 3.

[0056] Next, the operation of the scaffolding connector 1 will be described with reference to Figures 6 and 7. Figure 7 is a cross-sectional view taken along the line A in Figure 5, showing the wedge member 3 at the connecting position P2.

[0057] 6, when the wedge member 3 is located at the uppermost position relative to the main body member 2, the tip of the flange insertion portion 3c of the wedge member 3 is located above the flange insertion hole 2b of the base 2a. In other words, the flange insertion portion 3c is not inserted into the wedge insertion hole 102a of the mounting flange 102 inserted into the flange insertion hole 2b. Therefore, the scaffolding connector 1 is not connected to (separated from) the support 101 by moving the wedge member 3 to a separation position P1 where the flange insertion portion 3c is located above the flange insertion hole 2b and is not located within the wedge insertion hole 102a.

[0058] 7, when the wedge member 3 is located at the lowest position relative to the main body member 2, the tip of the flange insertion portion 3c of the wedge member 3 is located below the flange insertion hole 2b of the base 2a. In other words, the flange insertion portion 3c is inserted into the wedge insertion hole 102a of the mounting flange 102 inserted into the flange insertion hole 2b. Therefore, the scaffolding connector 1 is connected to the support 101 by moving the wedge member 3 to connection position P2 where the flange insertion portion 3c is located below the flange insertion hole 2b and inside the wedge insertion hole 102a.

[0059] The connection member 4 is supported movably in the elongated guide hole 2e of the main body member 2. When the connection member 4 is located at one of the ends of the elongated guide hole 2e that is farther from the base portion 2a, the shaft portion 4a of the connection member 4 is located above the contact portion 3d of the wedge member 3 located at the connecting position P2. In other words, the connection member 4 located above the contact portion 3d comes into contact with the contact portion 3d of the wedge member 3 moving from the connecting position P2 toward the separating position P1. Thus, the scaffold connector 1 maintains a state of being connected to the support 101 by moving the connection member 4 to the restricting position P3, which is located above the contact portion 3d and restricts the movement of the wedge member 3 from the connecting position P2 to the separating position P1.

[0060] As shown in FIG. 6, when the connecting member 4 is located at the end of the long guide hole 2e that is closer to the base 2a, the shaft 4a of the connecting member 4 is located above the notch 3e of the wedge member 3 located at the connecting position P2. That is, the connecting member 4 enters the space of the notch 3e of the wedge member 3 moving from the connecting position P2 toward the separating position P1. Therefore, the connecting member 4 does not contact the contact portion 3d of the wedge member 3. Therefore, the scaffold connector 1 becomes detachable from the support 101 by moving the connecting member 4 to the releasing position P4, which is located above the notch 3e and does not restrict the movement of the wedge member 3 from the connecting position P2 to the separating position P1.

[0061] As described above, the guide long hole 2e is such that the regulating position P3 and the release position P4 are located apart in the horizontal direction, that is, the left-right direction, of the main body member 2, and the regulating position P3 is located vertically above the release position P4, that is, in the upward direction, of the main body member 2. The guide long hole 2e guides the connecting member 4 between the regulating position P3 and the release position P4.

[0062] 7, when a force F is applied by the suspender W or the like in a direction away from and upwards to the base 2a of the main body member 2, the connection member 4 moves along the guide elongated hole 2e to the restricted position P3. In other words, when the force F is applied by the suspender W or the like, the connection member 4 restricts the movement of the wedge member 3 from the connection position P2 to the separation position P1 at the restricted position P3. Furthermore, when the force F is not applied by the suspender W or the like, the connection member 4 moves by gravity along the guide elongated hole 2e to the release position P4. In other words, when the force F is not applied by the suspender W or the like, the connection member 4 releases the restriction on the movement of the wedge member 3 from the connection position P2 to the separation position P1 at the release position P4.

[0063] The scaffolding connector 1 configured in this manner can be connected to the mounting flange 102 inserted into the flange insertion hole 2b of the main body portion. The scaffolding connector 1 can be connected to the mounting flange 102 by moving the wedge member 3 located at the separation position P1 to the connection position P2. Furthermore, the scaffolding connector 1 can hold the wedge member 3 at the connection position P2 by moving the connection member 4 to the restriction position P3.

[0064] Next, the attachment of the scaffolding connector 1 to the support 101 will be described with reference to Fig. 8 to Fig. 10. Fig. 8 is a schematic diagram showing a state in which the attachment flange 102 of the support 101 is inserted into the scaffolding connector 1. Fig. 9 is a schematic diagram showing a state in which the wedge member 3 of the scaffolding connector 1 is moved to the connecting position P2. Fig. 10 is a schematic diagram showing a state in which a force F is applied to the connecting member 4 of the scaffolding connector 1 via a hoisting device W. In the initial state of the scaffolding connector 1, the wedge member 3 is located at the separation position P1 and the connecting member 4 is located at the release position P4.

[0065] As shown in Fig. 8, the scaffolding connector 1 has the mounting flange 102 of the support 101 inserted into the flange insertion hole 2b of the main body. As a result, the scaffolding connector 1 is positioned in the up-down and left-right directions by the mounting flange 102 located in the flange insertion hole 2b. At this time, the connection member 4 is located at the release position P4. Also, the wedge member 3 is located at the separation position P1.

[0066] 9, in order to couple the scaffolding connector 1 to the mounting flange 102, the wedge member 3 located at the separation position P1 is moved to the coupling position P2. The flange insertion portion 3c of the wedge member 3 is inserted into the wedge insertion hole 102a of the mounting flange 102. This positions the scaffolding connector 1 in the front-rear direction. That is, the scaffolding connector 1 is coupled to the mounting flange 102 by the flange insertion hole 2b and the wedge member 3. At this time, the connection member 4 is located at the release position P4.

[0067] As shown in Fig. 10, in the scaffolding connector 1, a hoisting tool W is connected to a connecting member 4. When a force F is applied by the hoisting tool W in a direction away from the base 2a of the main body member 2, the connecting member 4 is moved from the release position P4 to the restricting position P3. Thus, in the scaffolding connector 1, the connection member 4 located at the restricting position P3 restricts the movement of the wedge member 3 from the connecting position P2. In this way, in the scaffolding connector 1, when a force F is applied to the hoisting tool W to hoist the scaffolding block 100A, the wedge member 3 is locked at the connecting position P2 and the connection with the mounting flange 102 is maintained.

[0068] 9, in the scaffolding connector 1, when no force F is applied by the hoisting device W to the connecting member 4 in a direction away from the base 2a of the main body member 2, the connecting member 4 is moved from the restricting position P3 to the releasing position P4. Therefore, in the scaffolding connector 1, the connecting member 4 located at the releasing position P4 does not restrict the movement of the wedge member 3 from the connecting position P2. In this way, the scaffolding connector 1 can move the wedge member 3 to the separating position P1 and separate it from the support 101 when the scaffolding block 100A is not being hoisted.

[0069] As described above, the scaffolding connector 1 utilizes the force F applied to the hoist W from a lifting device or the like to move the connection member 4 to the restricting position P3 and hold the wedge member 3 at the connecting position P2. Furthermore, when no force F is applied to the hoist W from a lifting device or the like, the scaffolding connector 1 utilizes gravity applied to the connection member 4 to move the connection member 4 to the release position P4, making it possible to move the wedge member 3 to the separation position P1. In this way, the scaffolding connector 1 indicates the connection state of the wedge member 3 by the position of the connection member 4. This makes it easy to manage the connection state between the mounting flange 102 of the support 101 and the wedge member 3 by the connection member 4.

[0070] Next, a main assembly method and a main sweeping method using the scaffolding connector 1 of this embodiment will be described with reference to Fig. 1 and Fig. 11. Fig. 11 is a perspective view showing a main assembly method for assembling a scaffolding block 100A in which the scaffolding connector 1 is attached to a support 101 to a temporary scaffolding 100, or a main sweeping method for removing the scaffolding block 100A.

[0071] As shown in FIG. 1, the large-scale assembly method is a method of assembling a scaffolding block 100A, which is a part of a temporary scaffolding 100, in advance and incorporating it into an existing temporary scaffolding 100. In the large-scale assembly method, the scaffolding block 100A constituting a part of the temporary scaffolding 100 is composed of a total of ten supports 101, for example, five supports 101 arranged in the left-right direction and two rows in the front-rear direction. The scaffolding block 100A also includes two stages of scaffolding boards 104 in the vertical direction and handrails 105 arranged along the scaffolding boards 104. The scaffolding block 100A connects the supports 101 adjacent to each other in the front-rear direction among the ten supports 101 by a horizontal member 103. The scaffolding block 100A also connects the supports 101 adjacent to each other in the left-right direction among the ten supports 101 by a diagonal member 106 and a handrail 105. The scaffolding block 100A has scaffolding boards 104 stretched between horizontal members 103.

[0072] As shown in FIG. 11, a scaffolding block 100A is lifted by a lifting device such as a crane. A scaffolding connector 1 for connecting a lifting device W is connected to the scaffolding block 100A. The scaffolding connector 1 is connected to an attachment flange 102 provided on a support 101 constituting the scaffolding block 100A. The scaffolding block 100A has a plurality of scaffolding connectors 1 (four scaffolding connectors 1 in this embodiment) connected to the plurality of supports 101, respectively. A lifting device W such as a wire rope is connected to the scaffolding connector 1. The scaffolding block 100A is lifted by the lifting device via the lifting device W connected to the connector 1.

[0073] The scaffolding block 100A lifted by the lifting tool W is transported to a predetermined position of the temporary scaffolding 100 installed on the ground. The scaffolding block 100A is assembled into the temporary scaffolding 100.

[0074] In the large-scale assembly method, a hoist W for hoisting the scaffolding block 100A by a hoisting device is connected to the connection member 4 of the scaffolding connector 1 connected to the mounting flange 102 of the support 101. The hoist W is connected to the scaffolding connector 1 from above and in a direction away from the base 2a (support 101) of the main body member 2. That is, a force F is applied to the connection member 4 via the hoist W in a direction away from the base 2a (support 101) of the main body member 2 and in an upward direction. Therefore, the connection member 4 moves to the restriction position P3 along the guide elongated hole 2e by the force F transmitted via the hoist W. The scaffolding connector 1 fixes the wedge member 3 to the connection position P2 by utilizing the force F transmitted via the hoist W.

[0075] The large-scale sweeping method is a method in which a scaffolding block 100A, which is a structural member of a certain range of the temporary scaffolding 100, is separated from the temporary scaffolding 100 in advance and removed from the temporary scaffolding 100 by a lifting device such as a crane. In the large-scale sweeping method, a scaffolding connector 1 is connected to each of a plurality of supports 101 included in the scaffolding block 100A to be removed from the temporary scaffolding 100. A lifting device W is connected to each of the plurality of scaffolding connectors 1. The scaffolding block 100A is lifted by the lifting device via the lifting device W. The scaffolding connector 1 fixes the wedge member 3 to the connecting position P2 by utilizing a force F transmitted via the lifting device W. The scaffolding block 100A is lowered to the ground from the temporary scaffolding 10041 and disassembled into each component.

[0076] In this way, in the scaffolding connector 1 used in the large-scale assembly method and the large-scale sweeping method, the connection member 4 is supported by the long guide hole 2e in a state in which it can move from the restricted position P3 to the released position P4 depending on the presence or absence of the force F transmitted via the hoisting tool W that hoists the scaffolding block 100A. Therefore, the scaffolding connector 1 indicates the connection state of the wedge member 3 depending on the position of the connection member 4. The movable range of the wedge member 3 in the main body part changes depending on the position of the connection member 4. As a result, in the large-scale assembly method and the large-scale sweeping method, the scaffolding connector 1 can easily manage the connection state between the mounting flange 102 of the support 101 and the wedge member 3 by the connection member 4.

[0077] (Embodiment 2) Next, a scaffolding connector 1 according to a second embodiment of the present invention will be specifically described with reference to Fig. 12 and Fig. 13. Fig. 12 is a schematic diagram showing a state in which the holding member 5 of the scaffolding connector 1 has been moved to a holding position P5. Fig. 13 is a schematic diagram showing a state in which the holding member 5 of the scaffolding connector 1 has been moved to a non-holding position P6.

[0078] 1 to 7, the scaffolding connector 1 according to the following embodiment is applied in place of the scaffolding connector 1, and the names, drawing numbers, and symbols used in the description will be used to indicate the same thing. Also, in the following embodiment, specific descriptions of the same points as in the embodiments already described will be omitted, and the description will focus on the differences.

[0079] 12, the scaffolding connector 1 is a connector for connecting a hoisting device W to a scaffolding block 100A. The scaffolding connector 1 is disposed on a support 101 via an attachment flange 102 of the support 101. The scaffolding connector 1 has a main body member 2, a wedge member 3, a connection member 4, and a holding member 5.

[0080] The holding member 5 is a member that holds the connection member 4 at the regulating position P3. The holding member 5 is provided on the main body member 2. The holding member 5 is movable between a holding position P5 where the connection member 4 is held at the regulating position P3 of the guide long hole 2e and a non-holding position P6 where the connection member 4 can move to any position in the guide long hole 2e. The holding member 5 is a plate-shaped member. The holding member 5 is supported on at least one of the left side portion 2c and the right side portion 2d of the main body member 2 so as to be movable in the vertical direction. In this embodiment, the holding member 5 has a long hole 5a for guiding the holding member. The holding member 5 is supported on the main body member 2 so as to be movable by a bolt 5b inserted into the long hole 5a for guiding the holding member.

[0081] At the holding position P5, the holding member 5 covers a part of the elongated guide hole 2e that holds the connecting member 4. At this time, at the holding position P5, the holding member 5 comes into contact with the connecting member 4 located at the restricting position P3 of the elongated guide hole 2e from the release position P4 side of the elongated guide hole 2e. In other words, at the holding position P5, the holding member 5 restricts the movement of the connecting member 4 from the restricting position P3 to the release position P4.

[0082] 13, in the non-holding position P6, the holding member 5 does not cover the elongated guide hole 2e that holds the connecting member 4. In other words, in the non-holding position P6, the holding member 5 does not restrict movement of the connecting member 4 from the restricting position P3 to the releasing position P4.

[0083] With this configuration, the connecting member 4 is held at the regulating position P3 by the holding member 5 regardless of the presence or absence of force F transmitted through the hoisting device W. Therefore, in the scaffolding connector 1, the wedge member 3 is held at the connecting position P2 by the holding member 5 via the connecting member 4. This makes it easy to manage the connected state between the mounting flange 102 of the support 101 and the wedge member 3 by the holding member 5.

[0084] (Other embodiments) In the above-described embodiment, the main body member 2 is a housing including the base portion 2a, the left side portion 2c, the right side portion 2d, the upper side portion 2f, and the lower side portion 2g. However, the main body member 2 may have a flange insertion hole 2b and may be configured to movably support the wedge member 3 and the connection member 4.

[0085] In the above embodiment, the connection member 4 is configured to be movable along the long guide hole 2e that extends upward as it moves away from the base 2a. However, it is sufficient that the connection member 4 is movable between a restricting position P3 where it comes into contact with the contact portion 3d of the wedge member 3 and a releasing position P4 where it does not come into contact. For example, the contact portion 3d may be rotatably supported on the left side portion 2c and the right side portion 2d of the main body member 2, and configured to come into contact with the contact portion 3d of the wedge member 3 at a specific rotation angle as the restricting position P3, and to not come into contact with the contact portion 3d at a specific rotation angle as the releasing position P4.

[0086] In the above embodiment, the guide slot 2e is an inclined slot that extends upward as it moves away from the base 2a. However, the guide slot 2e may be an elongated slot that extends horizontally. In this case, the connection member 4 is configured to move to the release position P4 by a biasing member such as a spring.

[0087] Furthermore, in the above-described embodiment, the connection member 4 moves to the release position P4 along the vertically inclined guide elongated hole 2e by utilizing gravity when no force F is applied via the suspender W. However, the connection member 4 may be configured to move to the release position P4 by a biasing member such as a spring when no force F is applied via the suspender W.

[0088] The above-mentioned embodiment is merely a representative embodiment, and various modifications can be made without departing from the gist of the embodiment. Of course, the present invention can be embodied in various other forms, and the scope of the present invention is defined by the claims, and includes the equivalent meanings of the claims and all modifications within the scope of the claims. [Explanation of symbols]

[0089] 1 Scaffolding connectors 2 Main body parts 2a base 2b Flange insertion hole 2c Left side 2d Right side 2e Guide slot 2f Upper side 2g Lower side 2h guide hole 3 Wedge member 3a Upper guide section 3b Lower guide part 3c Flange Insertion Part 3d contact area 3e Cutout 4 Connection parts 4a Shaft 4b Arc section 100 Temporary scaffolding 100A Scaffolding Block 101 Post 102 Mounting flange 103 Horizontal Member 104 Scaffolding Board 105 Handrail 106 Bracing members P1 separation position P2 connection position P3 regulation position P4 release position

Claims

1. A scaffolding connector for connecting a support to a mounting flange having a wedge insertion hole provided in the support and a lifting device for lifting the support, a main body member having a flange insertion hole into which the mounting flange is inserted; a wedge member to be inserted into the wedge insertion hole of the mounting flange; A connection member for connecting the sling, The body member includes: the wedge member is supported movably between a connection position in which the wedge member is positioned within the wedge insertion hole of the mounting flange inserted through the flange insertion hole of the main body member and a separation position in which the wedge member is not positioned within the wedge insertion hole; The connecting member is supported movably between a restricting position in which the connecting member is located when a force is applied from the suspending tool and a releasing position in which the connecting member is located when no force is applied from the suspending tool, The connecting member is At the restricting position, the wedge member is brought into contact with the wedge member located at the connecting position to restrict the movement of the wedge member to the separating position, and at the releasing position, the wedge member is not brought into contact with the wedge member. Scaffolding connectors.

2. 2. The scaffolding connector according to claim 1, The body member includes: a guide slot for guiding the connecting member from the restricting position to the releasing position, and a guide hole for movably supporting the wedge member; Scaffolding connectors.

3. The scaffolding connector according to claim 2, The body member includes: the restricting position of the guide slot and the releasing position of the guide slot are spaced apart in a horizontal direction, and the restricting position is located vertically above the releasing position; Scaffolding connectors.

4. The scaffolding connector according to any one of claims 2 to 3, The wedge member is a guide portion supported in a guide hole of the main body member so as to be movable between the connection position and the separation position; a flange insertion portion that extends from the separation position toward the connection position and is inserted into a wedge insertion hole of the mounting flange at the connection position; a cutout portion that opens from the coupling position toward the separation position and into which the connection member that is located at the release position is inserted at the separation position; a contact portion that contacts the connection member located at the restricting position in the coupled position, Scaffolding connectors.

5. The scaffolding connector according to claim 4, The body member includes: a base having the flange insertion hole and extending in the axial direction of the pillar, a pair of circumferential side portions extending from both ends of the base in the circumferential direction of the pillar in the insertion direction of the flange insertion hole and having the guide elongated hole, and a pair of axial side portions extending from both ends of the base in the axial direction of the pillar in the insertion direction of the flange insertion hole and having the guide hole, The wedge member is the flange insertion portion, the cutout portion, and the contact portion are located between the pair of circumferential side portions and between the pair of axial side portions, and are supported by the pair of axial side portions; The connecting member is a portion of the bearing is located between the pair of circumferential side portions and between the pair of axial side portions and is supported by the pair of circumferential side portions; Scaffolding connectors.

6. The scaffolding connector according to any one of claims 1 to 5, a holding member for holding the connecting member in the regulated position; Scaffolding connectors.

7. A major assembly method for assembling a scaffolding block constituting a part of a temporary scaffolding to another temporary scaffolding by using the scaffolding connector according to any one of claims 1 to 6.

8. A large-scale construction method for removing a scaffolding block constituting a part of a temporary scaffolding from the temporary scaffolding by using the scaffolding connector according to any one of claims 1 to 6.

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