JP7658566B2 - Scaffolding connectors and the large-scale assembly and large-scale sweeping methods using them - Google Patents

Description

The present invention relates to scaffolding connectors and large-scale assembly and large-scale sweeping methods that use the same.

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

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

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

The scaffolding connector of Patent Document 1 is attached to a support provided with a flange having an engagement hole. The scaffolding connector comprises a main body made of a pair of trapezoidal members and a wedge member. The main body supports a shackle that connects the sling. The main body also has a first support pin and a second support pin that support the wedge member, a recess into which the flange is inserted, and a connecting member that connects the pair of trapezoidal members. The wedge member is supported between the pair of trapezoidal members and is movable up and down relative to the main body.

When attaching the scaffolding connector to the support, the flange of the scaffolding connector is inserted into the recess of the main body with the wedge member pulled upward. Next, the wedge member of the scaffolding connector is inserted into the engagement hole of the flange inserted from the recess. 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.

JP 2016-20623 A

In the scaffolding connector described in Patent Document 1, the wedge member is driven into the engagement hole of the flange with a hammer or the like. 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 of the scaffolding connector varies depending on the driving force of the hammer or the like, the shape of the wedge member and the flange, etc. For this reason, it is difficult to manage the connection state between the flange and the wedge member of 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.

The object of the present invention is to provide a scaffolding connector that allows easy management of the connection between the flange of the support and the wedge member.

The 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 used to connect the support to a lifting device that lifts the support. The scaffolding connector comprises 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.

The main body member supports the wedge member so that it can move between a connected position in which the wedge member is located within the wedge insertion hole of the flange inserted through the flange insertion hole of the main body member, and a separated position in which the wedge member is not located within the wedge insertion hole. The main body member also supports the connection member so that it can move between a restricted position in which the connection member is located when a force is applied from the suspending device, and a released position in which the connection member is located when no force is applied from the suspending device.

The connecting member contacts the wedge member located in the connecting position in the restricting position to restrict the movement of the wedge member to the separating position, and does not contact the wedge member in the releasing position.

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 using a force applied to the connection member from a lifting device or the like. Also, 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 using gravity. The scaffolding connector can visually check 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.

From another perspective, it is preferable that the scaffolding connector of the present invention includes the following configuration: The main body member has a guide slot that guides the connection member from the restricting position to the releasing position, and a guide hole that movably supports the wedge member.

In the above-mentioned configuration, the connection member is supported by the guide slot so that it can move 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 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.

From another perspective, it is preferable that the scaffold connector of the present invention includes the following configuration: 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.

In the above-described configuration, the guide slot connecting the restricting position and the release position is inclined downward from the restricting position toward the release position. Therefore, when no force is applied from the lifting device, the connecting member moves from the restricting position toward the release position due to gravity. In other words, when the scaffolding connector is not lifting the scaffolding block, it 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.

From another perspective, 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 movable between the connecting position and the separation position, a flange insertion portion extending from the separation 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 separation position and into which the connecting member located at the release position at the separation position is inserted, and a contact portion that contacts the connecting member located at the restricting position at the connecting position.

In the above-mentioned configuration, the movement range of the wedge member in the main body member changes depending on the position of the connection member. This makes it easy to manage the connection state between the flange of the support and the wedge member using the connection member.

From another perspective, 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.

In the above-mentioned configuration, the connection member is supported on the main body in a state where a portion of the connection member is visible from outside the main body. This makes it easy to manage the connection state between the flange of the support and the wedge member using the connection member.

From another perspective, the scaffolding connector of the present invention preferably includes the following configuration: The scaffolding connector has a retaining member that retains the connecting member in the restricted position.

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 device. 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.

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 scaffolding connector described above. In the large-scale removal method, the scaffolding block constituting a part of the temporary scaffolding is removed from the other temporary scaffolding using the scaffolding connector described above. In the large-scale assembly method or the large-scale removal 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 using the connecting member.

According to one embodiment of the present invention, the connection between the flange of the support and the wedge member can be easily managed using the connection member.

FIG. 1 is a perspective view showing a scaffolding block having a scaffolding connector attached to a support pole according to an embodiment of the present invention. FIG. 2 is a perspective view showing a state in which the scaffolding connector according to the embodiment of the present invention is attached to a mounting flange of a support. FIG. 3 is a perspective view of the scaffolding connector according to the first embodiment of the present invention. FIG. 4 is a left side view showing the scaffolding connector according to the first embodiment of the present invention. FIG. 5 is a front side view of the scaffolding connector according to the first embodiment of the present invention. 6 is a cross-sectional view taken along the line A in FIG. 5, showing the wedge member in the separated position. 7 is a cross-sectional view taken along the line A in FIG. 5 when the wedge member is in the coupled position. FIG. 8 is a schematic diagram showing a state in which the mounting flange of the support is inserted into the scaffolding connector according to the first embodiment of the present invention. FIG. 9 is a schematic diagram showing a state in which the wedge member of the scaffolding connector according to the first embodiment of the present invention has been moved to the connecting position. 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. FIG. 11 is a perspective view showing a main 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 main removal method for removing the scaffolding block. 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. 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.

The following describes in detail an embodiment of the present invention 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. Also, the dimensions of the components in each drawing do not faithfully represent the actual dimensions of the components or the dimensional ratios of each component.

In the following description, the pillars 101 are arranged with their axial direction in the vertical direction. The axial direction of the pillars 101 is referred to as the "up-down direction." The direction of adjacent pillars 101 that are 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 direction is not intended to limit the orientation of the scaffolding connector 1 of the present invention when in use.

In addition, in the following description, the expressions "fixed," "connected," and "attached" (hereinafter referred to as "fixed") include not only cases where members are directly fixed to each other, but also cases where members are fixed via other members. In other words, in the following description, the expression "fixed" includes the meaning of both direct and indirect fixation between members.

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

As shown in Figures 1 and 2, the scaffolding block 100A is a unit that constitutes part of the temporary scaffolding 100. The temporary scaffolding 100 is made up of a combination of multiple scaffolding blocks 100A. 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.

The pillars 101 are, for example, metal rod-shaped members that extend vertically and are installed on the ground. The pillars 101 are, for example, round pipes that have a circular cross section when viewed in the axial direction. The pillars 101 are arranged consecutively 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 so as to extend vertically from brackets or the like attached to other pillars 101. The pillars 101 can also be connected in the axial direction by pipe joints or the like.

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

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 with 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. In this way, the adjacent supports 101 and the horizontal member 103 are configured as structural members of the scaffolding block 100A.

The horizontal member 103 is an example of a horizontal beam. Horizontal beams include handrails 105, diagonal braces 106, and members used in building frames, fabric frames, and beam frames. In addition, the horizontal member 103 is not limited to members with a double-supported structure, but also includes cantilevered members in which a fastening member is attached to only one side of the horizontal beam.

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

The handrail 105, which is a horizontal beam, is stretched 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 fastening members. In this way, the handrail 105 is stretched along the scaffolding boards 104 between adjacent posts 101 in the left-right direction on the scaffolding block 100A.

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 the 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 adjacent supports 101 in the left-right direction reinforced by the diagonal brace member 106.

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

(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 of 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 positioned at the separation position P1.

As shown in Figures 1 to 5, the scaffolding connector 1 is a connector for connecting a sling W to a scaffolding block 100A. The scaffolding connector 1 is placed 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.

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 2a, a left side portion 2c, a right side portion 2d, an upper side portion 2f, and a lower side portion 2g.

The base 2a is a side surface of the main body member 2 that is disposed 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 its 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 that extend 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 that extend 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.

The left side portion 2c and the right side portion 2d are the 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-to-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 sides of the main body portion.

The left side portion 2c and the right side portion 2d each have a guide slot 2e that supports the connection member 4 at the overlapping position when viewed in the left-right direction where the left side portion 2c and the right side portion 2d overlap. In addition, when viewed in the left-right direction, the guide slot 2e is inclined upward as it moves away from the base portion 2a. The guide slot 2e guides the connection member 4.

The upper side portion 2f and the lower side portion 2g are the 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-to-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.

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 detachably attached 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.

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 connection position P2 where the wedge member 3 connects to the mounting flange 102 of the support 101 and a separation position P1 above the connection position P2 where the wedge member 3 separates from the mounting flange 102. The wedge member 3 is formed from a plate-shaped 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.

The upper guide portion 3a and the lower guide portion 3b are portions that support the wedge member 3 movably by the main body member 2 and limit the direction of movement 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.

The flange insertion portion 3c is the 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.

The contact portion 3d is a portion that comes into contact with the connection 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 connection member 4. Therefore, when the connection portion is located above the contact portion 3d, the contact portion 3d comes into contact with the connection 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 connection member 4.

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

3 to 6, the connection member 4 is a member that connects a lifting 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 in a ring 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 ring-shaped 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.

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

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 parts of the upper guide portion 3a and the lower guide portion 3b that protrude beyond the main body member 2 function as parts that the operator grasps when moving the wedge member 3.

Next, the operation of the scaffold 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 connector position P2.

As shown in FIG. 6, when the wedge member 3 is positioned 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 positioned 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, by moving the wedge member 3 to the separation position P1 where the flange insertion portion 3c is positioned above the flange insertion hole 2b and is not positioned within the wedge insertion hole 102a, the scaffolding connector 1 is in a state where it is not connected to (separated from) the support 101.

As shown in FIG. 7, when the wedge member 3 is positioned 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 positioned 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 the connection position P2 where the flange insertion portion 3c is positioned below the flange insertion hole 2b and inside the wedge insertion hole 102a.

The connection member 4 is supported movably in the long guide hole 2e of the main body member 2. When the connection member 4 is located at the end of the long guide hole 2e that is farther from the base 2a, the shaft 4a of the connection member 4 is located above the contact portion 3d of the wedge member 3 located at the connection 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 connection position P2 toward the separation position P1. Therefore, the scaffold connector 1 maintains its connection to the support 101 by moving the connection member 4 to the restriction position P3, which is located above the contact portion 3d and restricts the movement of the wedge member 3 from the connection position P2 to the separation position P1.

As shown in FIG. 6, when the connection 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 connection member 4 is located above the notch 3e in the wedge member 3 located at the connection position P2. In other words, the connection member 4 enters the space of the notch 3e of the wedge member 3 that moves from the connection position P2 to the separation position P1. Therefore, the connection member 4 does not contact the contact portion 3d of the wedge member 3. Therefore, the scaffold connector 1 is located above the notch 3e, and can be separated from the support 101 by moving the connection member 4 to the release position P4, which is a position that does not restrict the movement of the wedge member 3 from the connection position P2 to the separation position P1.

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

As shown in FIG. 7, when a force F is applied by a hoist 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 a force F is applied by a hoist 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 no force F is applied by a hoist 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 no force F is applied by a hoist 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.

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. The scaffolding connector 1 can also 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.

Next, the attachment of the scaffolding connector 1 to the support 101 will be described with reference to Figures 8 to 10. Figure 8 is a schematic diagram showing the state in which the attachment flange 102 of the support 101 is inserted into the scaffolding connector 1. Figure 9 is a schematic diagram showing the state in which the wedge member 3 of the scaffolding connector 1 has been moved to the connecting position P2. Figure 10 is a schematic diagram showing the state in which a force F is applied to the connecting member 4 of the scaffolding connector 1 via the hoist 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.

As shown in FIG. 8, the mounting flange 102 of the support 101 is inserted into the flange insertion hole 2b of the main body of the scaffolding connector 1. As a result, the position of the scaffolding connector 1 in the vertical and horizontal directions is determined by the mounting flange 102 located in the flange insertion hole 2b. At this time, the connection member 4 is located in the release position P4. Also, the wedge member 3 is located in the separation position P1.

As shown in FIG. 9, in order to connect the scaffolding connector 1 to the mounting flange 102, the wedge member 3 located at the separation position P1 is moved to the connection 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. In other words, the scaffolding connector 1 is connected 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.

As shown in FIG. 10, in the scaffolding connector 1, a hoist W is connected to the connection member 4. When a force F is applied by the hoist W in a direction away from the base 2a of the main body member 2, the connection 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 in 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 hoist W to lift the scaffolding block 100A, the wedge member 3 is locked in the connecting position P2, and the connection to the mounting flange 102 is maintained.

As shown in FIG. 9, when no force F is applied by the lifting device W to the connecting member 4 in a direction away from the base 2a of the main body member 2, the scaffolding connector 1 moves the connecting member 4 from the restricting position P3 to the releasing position P4. Therefore, the scaffolding connector 1 does not restrict the movement of the wedge member 3 from the connecting position P2 by the connecting member 4 located in the releasing position P4. 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 lifted.

As described above, the scaffolding connector 1 uses the force F applied to the hoisting tool W from a lifting device or the like to move the connecting 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 hoisting tool W from a lifting device or the like, the scaffolding connector 1 uses gravity applied to the connecting member 4 to move the connecting 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 connecting state of the wedge member 3 by the position of the connecting member 4. This makes it easy to manage the connecting state between the mounting flange 102 of the support 101 and the wedge member 3 by the connecting member 4.

Next, the large-scale assembly method and the large-scale removal method using the scaffolding connector 1 of this embodiment will be described with reference to Figures 1 and 11. Figure 11 is a perspective view showing the large-scale assembly method of assembling a scaffolding block 100A in which the scaffolding connector 1 is attached to a support 101 to a temporary scaffolding 100, or the large-scale removal method of removing the scaffolding block 100A.

As shown in FIG. 1, the large-scale assembly method is a method in which a scaffolding block 100A, which is a part of a temporary scaffolding 100, is preassembled and incorporated into an existing temporary scaffolding 100. In the large-scale assembly method, the scaffolding block 100A, which constitutes 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 arranged in two rows in the front-back direction. The scaffolding block 100A also includes two scaffolding boards 104 in the vertical direction and handrails 105 arranged along the scaffolding boards 104. The scaffolding block 100A connects adjacent supports 101 in the front-back direction among the ten supports 101 by horizontal members 103. The scaffolding block 100A also connects adjacent supports 101 in the left-right direction among the ten supports 101 by diagonal bracing members 106 and handrails 105. The scaffolding block 100A has scaffolding boards 104 stretched between horizontal members 103.

As shown in FIG. 11, the 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 that constitutes the scaffolding block 100A. The scaffolding block 100A has multiple scaffolding connectors 1 (four scaffolding connectors 1 in this embodiment) connected to the multiple 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 a lifting device via the lifting device W connected to the connector 1.

The scaffolding block 100A is lifted by the lifting device W and transported to a predetermined location on the temporary scaffolding 100 installed on the ground. The scaffolding block 100A is assembled into the temporary scaffolding 100.

In the large-scale construction method, a lifting device W for lifting the scaffolding block 100A is connected to the connection member 4 of the scaffolding connector 1 connected to the mounting flange 102 of the support 101 by a lifting device. The lifting device 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. In other words, a force F is applied to the connection member 4 via the lifting device 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 long hole 2e by the force F transmitted via the lifting device W. The scaffolding connector 1 fixes the wedge member 3 to the connection position P2 using the force F transmitted via the lifting device W.

The large-scale removal method is a method in which a scaffolding block 100A, which is a structural member of a certain area 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 removal method, a scaffolding connector 1 is connected to each of the multiple 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 multiple 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 using the 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.

In this way, the scaffolding connector 1 used in the large-scale assembly method and the large-scale sweeping method has the connection member 4 supported by the guide long hole 2e in a state in which it can move from the restricting position P3 to the releasing position P4 depending on the presence or absence of the force F transmitted through the lifting device 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 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 using the connection member 4.

(Embodiment 2)
Next, a second embodiment of the scaffolding connector 1 according to 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.

The scaffolding connector 1 according to the following embodiment is applied in place of the scaffolding connector 1 shown in Figs. 1 to 7, and the names, figure numbers, and symbols used in the description are used to refer to the same thing. 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.

As shown in FIG. 12, the scaffolding connector 1 is a connector for connecting a sling W to a scaffolding block 100A. The scaffolding connector 1 is placed 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 retaining member 5.

The holding member 5 is a member that holds the connection member 4 in 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 in 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 within 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 or 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 movably on the main body member 2 by a bolt 5b inserted into the long hole 5a for guiding the holding member.

At the holding position P5, the holding member 5 covers a portion of the guide slot 2e that holds the connection member 4. At this time, at the holding position P5, the holding member 5 contacts the connection member 4 located at the restricting position P3 of the guide slot 2e from the release position P4 side of the guide slot 2e. In other words, at the holding position P5, the holding member 5 restricts the movement of the connection member 4 from the restricting position P3 to the release position P4.

As shown in FIG. 13, in the non-holding position P6, the holding member 5 does not cover the guide slot 2e that holds the connecting member 4. In other words, in the non-holding position P6, the holding member 5 does not restrict the movement of the connecting member 4 from the restricting position P3 to the releasing position P4.

By configuring it in this way, the connection member 4 is held in the restricted position P3 by the holding member 5 regardless of the presence or absence of the force F transmitted through the hoisting device W. Therefore, in the scaffolding connector 1, the wedge member 3 is held in the connecting position P2 by the holding member 5 via 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 holding member 5.

Other Embodiments
In the above 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.

In the above embodiment, the connection member 4 is configured to be movable along the guide slot 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 angle as the releasing position P4.

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 a 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.

In the above embodiment, when no force F is applied via the sling W, the connection member 4 moves to the release position P4 along the vertically inclined guide slot 2e using gravity. However, when no force F is applied via the sling W, the connection member 4 may be configured to move to the release position P4 by a biasing member such as a spring.

The above-mentioned embodiment is merely a representative example, and various modifications can be made without departing from the gist of the embodiment. Of course, the present invention can be implemented in various other forms, and the scope of the present invention is indicated by the claims, and further includes the equivalent meanings set forth in the claims, and all modifications within the scope of the claims.

REFERENCE SIGNS LIST 1 Scaffolding connector 2 Main body member 2a Base 2b Flange insertion hole 2c Left side 2d Right side 2e Guide long hole 2f Upper side 2g Lower side 2h Guide hole 3 Wedge member 3a Upper guide portion 3b Lower guide portion 3c Flange insertion portion 3d Contact portion 3e Cutout portion 4 Connection member 4a Shaft portion 4b Arc portion 100 Temporary scaffolding 100A Scaffolding block 101 Support 102 Mounting flange 103 Horizontal member 104 Scaffolding board 105 Handrail 106 Brace member P1 Separation position P2 Connection position P3 Restraining position P4 Release position

Claims (8)

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. 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. 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. 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. 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 positioned 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. 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. A large-scale assembly method in which a scaffolding block constituting a part of a temporary scaffolding is assembled to another temporary scaffolding using a scaffolding connector according to any one of claims 1 to 6. A method for removing a scaffolding block that constitutes a part of a temporary scaffolding from the temporary scaffolding using a scaffolding connector according to any one of claims 1 to 6.

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