JP2020180463A - Scaffold connection tool, and major assembly method and final removal method using the same - Google Patents

Abstract

To make a scaffold connection tool easily attached to a flange of a post and to prevent falling of a wedge member after attachment.SOLUTION: A scaffold connection tool comprises: a box-shaped body portion 2; and a wedge member 3 stored in the body portion 2 so as to vertically move and fitted into an engagement hole of a flange. The body portion 2 includes: a side wall portion 21; an upper cover member 22 positioned above the side wall portion 21 and constituting an upper face; and a lower cover member 23 positioned below the side wall portion 21 and constituting a lower face. In the body portion 2, there are provided: a shackle 44 for connecting with a wire rope W; and a recessed portion 10 engaging so as to clamp the flange from above and below. A contact face in contact with a post is provided at left end portions of an upper side and a lower side of the body portion 2. At a lower end portion of the wedge member 3, there is provided a claw member 34 freely going in/out.SELECTED DRAWING: Figure 13

Description

The present invention relates to a scaffolding connector, a large assembly method using the same, and a large payment method.

Conventionally, a temporary scaffold is provided at a construction site along a building such as a building, and is used by a site worker to perform the construction of the building. In the temporary scaffolding, each member such as a support, a horizontal member, a scaffolding board, and a brace is assembled by an operator, and is set up in the left-right direction and upward.

When setting up a temporary scaffold, the scaffold is partially assembled on the ground in advance (hereinafter, the partially assembled scaffold is referred to as "scaffold block"), and the scaffold block is lifted by a hanging work member such as a crane, and is already installed. The so-called large-scale construction method is used, in which the temporary scaffolding is assembled by stacking it on the scaffolding.

Further, in the dismantling work, a method of removing the scaffolding block from the existing scaffolding, suspending it with a hanging work member such as a crane, lowering it on the ground and disassembling it into each member, a so-called large payment method is used.

Since each member is assembled or disassembled on the ground in this large assembly method or large payment method, there are advantages such as safe work, prevention of each member from falling, and improvement of work efficiency.

A scaffolding connector for connecting a scaffolding member and a hanging work member, which is used in a large assembly method and a large payment method, has been proposed (see Patent Document 1).

The scaffolding connector of Patent Document 1 will be described with reference to FIGS. 17 and 18.
The scaffolding connector 101 is attached to a support column 132 provided with a flange 133 having an engagement hole 133a, and connects the support column 132 and the shackle 134 that lifts the support column 132. The scaffolding connector 101 includes a main body 102 composed of a pair of trapezoidal members 104, and a wedge member 103. The shackle 134 is connected to the main body 102. The main body 102 has a first support pin 108 that supports the wedge member 103, a recess 110 that fits the flange 133, and connecting members 105 and 106 that connect the pair of trapezoidal members 104 to each other.

Further, the trapezoidal member 104 is provided with a second support pin 109 for guiding and supporting the wedge member 103 at a position separated from the arrangement position of the first support pin 108 in the lower left diagonal direction.

The wedge member 103 is formed in a bifurcated structure divided into a long piece 111 and a short piece 112. The longitudinal piece 111 and the short piece 112 extend downward and substantially in parallel. The longitudinal piece 111 is formed so as to extend while maintaining a constant width. The short hand piece 112 is tapered so as to narrow in the width direction toward the downward direction.

An elongated hole 113 is formed in the central portion of the longitudinal piece 111 along the longitudinal direction. The first support pin 108 of the main body 102 is loosely fitted in the elongated hole 113. As a result, the wedge member 103 can be displaced in the vertical direction with respect to the main body 102 while being sandwiched between the trapezoidal members 104, and is prevented from falling off from the main body 102.

The connector 101 is attached to the flange 133 of the support column 132. As shown in FIG. 17, for example, the lower end of the protruding longitudinal piece 111 is pressed by the fingertip F of the operator, and the wedge member 103 is pushed up (see arrow A). When the longitudinal piece 111 is pushed up so that the entire longitudinal piece 111 is hidden by the trapezoidal member 104, the lower portion of the short piece 112 is also hidden by the trapezoidal member 104 and cannot be seen from the gap of the recess 110.

Next, the connector 101 is moved so that the recess 110 of the main body 102 fits into the flange 133 of the column 132 (see arrow B), and the connector is connected until each first coupling member 105 is pressed against the outer surface of the column 132. The 101 is displaced toward the support column 132.

After that, as shown in FIG. 18, when the fingertip F of the operator is removed from the lower end of the longitudinal piece 111, the wedge member 103 is displaced downward by its own weight (see arrow C), and the short hand piece 112 of the wedge member 103 is flanged. It is fitted into the engagement hole 133a of 133. Then, when the upper end of the wedge member 103 is struck by a hammer or the like, the wedge member 3 is firmly fitted into the engagement hole 133a of the flange 133.

As a result, the main body 102 of the scaffolding connector 101 is connected to the support column 132 so as to wrap the flange 133. Using this connector 101, the wire rope W can be hung on the shackle 134 and lifted.

Japanese Unexamined Patent Publication No. 2016-20623

The connector 101 disclosed in Patent Document 1 described above is a flange of a support column 132 by fitting a flange 133 into a recess 110 so as to sandwich the flange 133 from above and below and fitting a wedge member 103 into an engagement hole 133a. It is attached to 133.

In the connector 101 described above, the wedge member 103 is fitted from above, and the wedge member 103 is driven into the engagement hole 133a of the flange 133 so as not to come off.

However, if the driving force of a hammer or the like is weak, when a force for pushing up the wedge member 103 from the bottom is applied, the wedge member 103 comes out of the engagement hole 133a of the flange 133, and the connector 101 comes off from the flange 133. There was a risk.

The present invention provides a scaffolding connector that makes it easy to attach the scaffolding connector to the flange of the column, prevents the wedge member from falling off after attachment, and prevents the scaffolding connector from coming off the flange of the column. The challenge is to provide.

The scaffolding connector of the present invention is attached to a strut provided with a flange having an engaging hole on a surface extending in a substantially horizontal direction, and is a scaffold for connecting the strut and a lifting device for lifting the strut. It is a connecting tool for use, and includes a box-shaped main body portion and a wedge member that is vertically movable and housed inside the main body portion and is fitted into an engaging hole of the flange. The main body portion is a main body portion. A U-shaped side wall portion in a plan view that constitutes the front, back, and left side surfaces, an upper lid member that is located above the side wall portion and constitutes an upper surface, and a lower surface that is located below the side wall portion and constitutes a lower surface. It has a lid member, and the main body is provided with a connecting means for connecting to the lifting device or a part thereof, and a recess for fitting the flange so as to sandwich it from above and below. The upper and lower left ends of the main body are provided with contact surfaces that come into contact with the support columns, and the lower end of the wedge member is provided with a claw member that can be moved in and out.

When the movement of the wedge member to the lower side is stopped, the claw member pops out from the lower end of the wedge member. As a result, even if a force for moving the wedge member upward is applied, the claw member comes into contact with the lower lid member, and the wedge member does not fall out of the main body.

Further, in the scaffolding connector of the present invention, the wedge member includes a bifurcated wedge main body, an upper piece located on the upper side of the wedge main body, and a lower piece located on the lower side of the wedge main body. The upper lid member is provided with an upper rectangular hole into which the upper piece is inserted, and the lower lid member is provided with a lower rectangular hole into which the lower piece is inserted, and the upper rectangular hole and the lower portion are provided. The rectangular hole can be configured so that the wedge member is supported so as to be movable up and down.

The wedge member is arranged in a state in which the upper and lower ends thereof are inserted into the upper rectangular hole provided in the upper lid member and the lower rectangular hole provided in the lower lid member, thereby restricting movement in directions other than the vertical direction. can do.

Further, in the scaffolding connector of the present invention, the lower piece of the wedge member has a protruding portion that contacts the lower lid member and a side opposite to the protruding portion so that the wedge member does not fall out from the main body. The pipe member is provided in the above-mentioned pipe member, and the claw member can be freely moved in and out of the pipe member.

Further, in the scaffold connecting tool of the present invention, the wedge main body portion includes a flange insertion piece formed in a size that can be inserted into the engagement hole of the flange and the flange fitted into the main body portion from the concave portion. It has a support portion provided with a space for accommodating the portion and is separated from the flange insertion piece, and the flange insertion piece is inserted into the engagement hole of the flange by the weight of the wedge member. Can be configured as follows.

According to the above configuration, the scaffolding connector can be attached to the flange by the weight of the wedge member. Therefore, the scaffolding connector can be attached to the flange without using a hammer or the like. As a result, workability is improved and the durability of the scaffolding connector is also improved.

Further, in the scaffolding connector of the present invention, the wedge main body portion can be configured to have a shoulder portion that comes into contact with the upper lid member when the wedge member is moved upward.

According to the above configuration, it is possible to prevent the wedge member from falling off from the upper side of the main body portion.

Further, in the scaffolding connector of the present invention, the claw member can be configured to be urged in a direction of protruding from the pipe member from the state of being housed in the pipe member by the spring member.

Further, in the scaffolding connector of the present invention, the pipe member is provided with a window portion through which the claw member can enter and exit, and the claw member is rotatably attached to a shaft attached to the pipe member. The claw member can be configured to pop out from the window portion by the urging force of the spring member attached to the shaft.

By configuring the claw member so as to protrude from the pipe member from the state of being housed in the pipe member by the spring member, when the pipe member moves downward from the lower lid member of the main body portion, the claw member is released. It can pop out and restrict the upward movement of the wedge member.

Further, in the scaffolding connector of the present invention, the lower rectangular hole is formed in a size such that the lower piece, the pipe member, and the claw member housed in the pipe member can move up and down. When the wedge member is located above, the claw member abuts on the edge of the lower rectangular hole, and the state of being housed in the pipe member is maintained, and the wedge member moves downward and lower. When the contact between the rectangular hole and the claw member is released, the claw member rotates due to the urging force of the spring member and pops out from the pipe member, and the claw member and the lower lid member come into contact with each other to cause the wedge member. It can be configured to regulate upward movement.

According to the above configuration, when the wedge member is located above, the wedge member can be moved. Then, when the contact between the lower rectangular hole and the claw member is released, the claw member rotates due to the urging force of the spring member and pops out from the pipe member, and the claw member and the lower lid member come into contact with each other. The upward movement of the wedge member is restricted. Therefore, even if a force from below is applied to the wedge member, the wedge member does not come out from the engagement hole of the flange.

Further, in the scaffolding connector of the present invention, the wedge main body portion has a support portion separated by having a space for accommodating the flange insertion piece and the flange portion, and the upper lid when the wedge member is moved upward. It can be configured to have a shoulder portion that comes into contact with the member.

Further, the large assembly method of the present invention is characterized in that the scaffolding connector described in any of the above is used.

Further, the large-payment method of the present invention is characterized in that the scaffolding connector described in any of the above is used.

In the present invention, when the movement of the wedge member to the lower side is stopped, the claw member pops out from the lower end of the wedge member. As a result, even if a force for moving the wedge member upward is applied, the claw member comes into contact with the lower lid member, and the wedge member does not fall out of the main body.

FIG. 1 is a front view showing a scaffolding connector according to an embodiment of the present invention. FIG. 2 is a left side view of the scaffolding connector according to the embodiment of the present invention. FIG. 3 is a rear view of the scaffolding connector according to the embodiment of the present invention. FIG. 4 is a top view of the scaffolding connector according to the embodiment of the present invention. FIG. 5 is a bottom view of the scaffolding connector according to the embodiment of the present invention. FIG. 6 is a perspective view of the scaffolding connector according to the embodiment of the present invention. FIG. 7 is an exploded front view of the scaffolding connector according to the embodiment of the present invention. FIG. 8 is a front view showing a state in which the wedge member of the scaffolding connector according to the embodiment of the present invention is raised. FIG. 9 is a right side view showing a state in which the wedge member of the scaffolding connector according to the embodiment of the present invention is raised. FIG. 10 is a cross-sectional view showing a state in which the wedge member of the scaffolding connector according to the embodiment of the present invention is lowered. FIG. 11 is a cross-sectional view showing a state in which the wedge member of the scaffolding connector according to the embodiment of the present invention is lowered. FIG. 12 is a schematic view showing a state in which the scaffolding connector according to the embodiment of the present invention is attached to the flange of the support column. FIG. 13 is a schematic view showing a state in which the scaffolding connector according to the embodiment of the present invention is attached to the flange of the support column. FIG. 14 is a perspective view showing a state in which the scaffolding connector according to the embodiment of the present invention is attached to the flange of the support column. FIG. 15 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 column. FIG. 16 is a perspective view showing a scaffolding block and a scaffolding in which the scaffolding connector according to the embodiment of the present invention is attached to a support column. FIG. 17 is a schematic view showing a state in which a conventional scaffolding connector is attached to a flange of a support column. FIG. 18 is a schematic view showing a state in which a conventional scaffolding connector is attached to a flange of a support column.

Embodiments of the present invention will be described in detail with reference to the drawings. The same or corresponding parts in the drawings are designated by the same reference numerals, and the explanations are not repeated in order to avoid duplication of explanations.

First, a large assembly method and a large payment method using the scaffolding connector (hereinafter, simply referred to as “connector”) 1 of the present embodiment will be described with reference to FIGS. 15 and 16. As shown in FIGS. 15 and 16, the connecting tool 1 of the present embodiment is used in the large assembly method and the large payment method.

As shown in FIG. 15, in the large assembly method, the scaffolding is partially assembled on the ground in advance to form the scaffolding block 40. The connector 1 is attached to a flange 43 provided on a support column 42 constituting the scaffolding block 40. In the large assembly method, the wire rope W is connected to the connecting tool 1. The wire rope W connected to the connector 1 is lifted by a crane (not shown) or the like as a lifting device, and the scaffolding block 40 is lifted.

As shown in FIG. 16, the scaffolding block 40 suspended by the wire rope W is moved to a predetermined position of the scaffolding 41 installed on the ground, and the scaffolding block 40 is assembled on the scaffolding 41 to install the scaffolding. ..

In the large payment method, the wire rope W is connected to the connecting tool 1 of the scaffolding block 40 from the scaffolding 41 installed on the ground, the scaffolding block 40 to be removed is lifted by a crane or the like, and the scaffolding block 40 is removed from the scaffolding 41. The removed scaffold block 40 is lowered to the ground by a crane or the like and disassembled into each member.

Here, as shown in FIGS. 15 and 16, the support column 42 is formed in a cylindrical shape and is provided upright at predetermined spans.

A column 42, a flange 43, and a connector 1 attached to the flange 43 will be described with reference to FIG.

As shown in FIG. 14, the column 42 formed in a cylindrical shape is provided with a plurality of flanges 43 at predetermined intervals in the vertical direction. Each flange 43 is formed with four engaging holes 43a for connecting each member such as a horizontal member, a scaffolding plate, and a brace in all directions. The engagement hole 43a is such that the flange 43 is provided with a flange having the engagement hole 43a on a surface extending in a substantially horizontal direction. The connector 1 of the present embodiment engages with one of the four engagement holes 43a. It is attached to the hole 43a. The engaging hole 43a to be attached is selected in a direction suitable for hanging with the wire rope W.

Next, the connector 1 of the present embodiment will be described with reference to FIGS. 1 to 11.

As shown in FIGS. 1 to 11, the connector 1 includes a box-shaped main body 2 and a wedge member 3 that is vertically movable and housed inside the main body 2 and is fitted into the engagement hole 43a of the flange 43. To be equipped.

As shown in FIGS. 1 to 6, the main body 2 is configured to have a substantially cubic shape. The main body 2 has a U-shaped side wall portion 21 forming a front surface, a back surface, and a left side surface, an upper lid member 22 located above the side wall portion 21 and forming an upper surface, and a lower side surface portion 21. It has a lower lid member 23 which is located at and constitutes a lower surface. The side wall portion 21, the upper lid member 22, and the lower lid member 23 are made of steel.

The side wall portion 21 includes a front side wall 21a and a back side wall 21b, and a left side wall 21c connecting the front side wall 21a and the back side wall 21b.

As shown in FIGS. 1, 6, 8, 10 and 11, the front side wall 21a and the back side wall 21b are formed in a shape in which the upper part of the right end portion is obliquely cut off at an angle of about 45 degrees. .. The front side wall 21a and the back side wall 21b are provided with insertion holes 22g for connecting the shackle 44 and the like to a position located on the center side from the diagonally cut off portion (see FIGS. 10 and 11). The insertion hole 22g may have a thread or the like formed inside the shackle 44 depending on the configuration of the shackle 44.

The upper lid member 22 includes an upper plate 22a that covers the upper side of the side wall portion 21, a swash plate 22b that covers an oblique portion, and a side plate 22c that reaches about 1/3 of the right side from the upper corner portion. The upper lid member 22 is attached and fixed to the upper surface of the side wall portion 21 by welding or the like.

The shackle 44 as a connecting member is attached at an angle of about 45 degrees with respect to the perpendicular direction of the front side wall 21a and the back side wall 21b. In the upper part of the right end portion of the upper lid member 22, a space is formed between the swash plate 22b of the upper lid member 22 and the shackle 44 by the swash plate 22b having an inclination of about 45, and the shackle 44 is smoothly rotated by this space. Can be moved. Further, since the swash plate 22b of the upper lid member 22 has an inclination of about 45, the wire rope W can be easily inserted into the shackle 44 and the wire rope W can be prevented from being caught by the connector 1. Can be done.

As shown in FIGS. 2, 4, 10 and 11, a projecting portion 22d protruding from the left side wall 21c of the side wall portion 21 is provided at the end portion on the left side surface side of the upper lid member 22. At the center of the projecting portion 22d, an arc-shaped strut contact portion 22e is provided in a plan view. Similarly, a protruding portion 24d protruding from the left side wall 21c is provided at the lower end of the left side wall 21c. At the center of the protruding portion 24d, an arc-shaped strut contact portion 24e is provided in a plan view.

The lower lid member 23 is provided with a rising wall 23b that rises vertically from the lower plate 23a and the lower plate 23a and abuts on the front side wall and the back side wall, respectively. The rising wall 23b is provided with a bolt insertion hole 23c, and the front side wall 21a and the back side wall 21b are also provided with bolt insertion holes 21d at positions corresponding to each (see FIG. 7).

The lower lid member 23 is arranged on the lower side of the main body portion 2, the bolts 23d are inserted through the insertion holes 23c and 21d, and the lower lid member 23 is attached to the side wall portion 21 by using the bolts 23d and the nut 23e.

The left side wall 21c of the main body 2 is provided with a recess 10 in the central portion thereof so as to sandwich the flange 43 from above and below. The recess 10 is a space for the flange 43 to be fitted when the connector 1 is attached to the flange 43 of the support column 42.

As shown in FIGS. 4, 10 and 11, the upper lid member 22 is provided with an upper rectangular hole 22f into which the upper piece 31 of the wedge member 3 is inserted. As shown in FIGS. 5, 10 and 11, the lower lid member 23 is provided with a lower rectangular hole 23h into which the lower piece 32 of the wedge member 3 is inserted.

The wedge member 3 is supported by the upper rectangular hole 22f of the upper lid member 22 and the lower rectangular hole 23h of the lower lid member 23 so as to be vertically movable.

As shown in FIG. 7, the wedge member 3 is made of a steel material, and has a bifurcated wedge main body 30, an upper piece 31 located above the wedge main body 30, and a lower portion located below the main body 30. It has a side piece 32 and.

The wedge main body 30 is separated from the flange insertion piece 30a extending along the left side wall 21c with a space 30d for accommodating the flange 43 portion fitted into the main body 2 from the recess 10. It has a support portion 30b provided. Then, a lower piece 32 is provided in connection with the support portion 30b of the wedge main body portion 30, and the lower piece 32 abuts on the lower lid member 23 so that the wedge member 3 does not fall out of the main body portion 2. A protruding portion 32a is provided.

Further, the pipe member 33 is fixed at a position opposite to the protruding portion 32a of the lower piece 32. Then, the claw member 34 is rotatably attached to the shaft 34b attached to the pipe member 33, and the claw member 34 is rotatably attached to the pipe member 33. The pipe member 33 is provided with a window portion 33a for the claw member 34 to enter and exit.

The claw member 34 is urged in a direction of protruding from the pipe member 33 by a winding spring 34a as a spring member. In this embodiment, the claw member 34 is provided with a U-shaped accommodating portion 34c for accommodating the spring member 34a in a plan view. A winding spring 34a is attached to the shaft 34b, one end of the winding spring 34a abuts on the wall of the accommodating portion 34c, and the other end abuts on the inner peripheral surface of the pipe member 33. Due to the urging force of the winding spring 34a, the claw member 34 is configured to protrude from the window portion 33a of the pipe member 33. Then, the movement of the claw member 34 is stopped at a position where the lower end portion of the claw member 34 abuts on the lower end portion of the window portion 33a. When the claw member 34 is accommodated in the pipe 33 from the window portion 33a against the urging force of the winding spring 34a, the wedge member 3 can move upward with respect to the main body portion 2.

In this way, the claw member 34 is attached to the pipe member 33 so as to be freely accessible, and the claw member 34 is provided to the lower end portion of the wedge member 3 so as to be freely accessible.

Since the claw member 34 is provided at the lower end portion of the wedge member 3 so as to be freely accessible, when the claw member 34 is located below the lower lid member 23, the claw member 34 pops out due to the winding spring 34a, and the main body portion 2 The upward movement of the wedge member 3 with respect to the wedge member 3 is suppressed.

As shown in FIG. 11, the shoulder portion 30s of the wedge main body portion 30 of the wedge member 3 moves the wedge member 3 upward and abuts on the inner surface of the upper lid member 22 of the main body portion 2, and when the wedge member 3 is brought into contact with the inner surface of the upper lid member 22, the flange 43 is inserted into the recess 10. The length of the flange insertion piece 30a is specified so that the flange insertion piece 30a can be inserted. The flange insertion piece 30a is formed in a size that allows it to be inserted into the engagement hole 43a of the flange 43, and smoothly enters the engagement hole 43a of the flange 43.

Therefore, when the connector 1 is attached to the flange 43, the wedge member 3 moves downward due to the weight of the wedge member 3, the flange insertion piece 30a is inserted into the engagement hole 43a of the flange 43, and the flange 43 The connector 1 is attached to. In this way, the connector 1 can be attached to the flange 43 by the weight of the wedge member 3. Therefore, the connecting tool 1 can be attached to the flange 43 without using a hammer or the like, and the workability is improved and the durability of the connecting tool 1 is also improved.

The lower rectangular hole 23h of the lower lid member 23 is formed in a size such that the lower piece 32, the pipe member 33, and the claw member 34 housed in the pipe member 33 can move up and down.

Then, as shown in FIG. 10, when the wedge member 3 is moved downward, the lower end of the protruding portion 32a comes into contact with the inner surface of the lower lid member 23, and the downward movement is restricted.

As shown in FIG. 11, when the wedge member 3 is located above, the claw member 34 is in contact with the edge of the lower rectangular hole 23h, and the state of being housed in the pipe member 33 is maintained. As shown in FIG. 10, when the wedge member 3 moves downward and the contact between the lower rectangular hole 23h and the claw member 34 is released, the claw member 34 rotates about the shaft 34b due to the urging force of the winding spring 34a. Then, it pops out from the pipe member 33. Then, when the claw member 34 pops out from the pipe member 33, the lower lid member 23 and the claw member 34 come into contact with each other even if the wedge member 3 is to be raised, and the movement of the wedge member 3 is restricted. As a result, the wedge member 3 does not fall out from the main body 2.

Next, the assembly of the wedge member 3 and the main body 2 will be described with reference to FIG. 7.

The wedge member 3 is inserted from below the side wall portion 21, and the upper piece 31 of the wedge member 3 is inserted into the upper rectangular hole 22f of the upper lid member 22. In this state, the lower piece 32 of the wedge member 3 is inserted into the lower rectangular hole 23h of the lower lid member 23, and the lower lid member 23 is brought into contact with the opening under the side wall portion 21. At this time, the claw member 34 is housed inside the pipe member 33 by being pushed from the lower direction to the upper side by the lower rectangular hole 23h. From this, the lower lid member 23 can be brought into contact with the side wall portion 21 without any problem.

After that, the connector 1 of the present embodiment is assembled by aligning the insertion hole 21d of the side wall portion 21 with the insertion hole 23c of the lower lid member 23, inserting the bolt 23d, and tightening the nut 23e to the bolt 23d.

The wedge member 3 is arranged in a state in which the upper and lower ends thereof are inserted into the upper rectangular hole 22f provided in the upper lid member 22 and the lower rectangular hole 23h provided in the lower lid member 23, so that the wedge member 3 is arranged in a state other than the vertical direction. Movement is restricted.

When the upper lid member 22 is positioned on the upper side, the wedge member 3 moves downward in the main body 2 due to its own weight, and the protruding portion 32a comes into contact with the lower lid member 23 and stops. The wedge member 3 is supported by the upper rectangular hole 22f of the upper lid member 22 and the lower rectangular hole 23h of the lower lid member 23. Then, the claw member 34 protrudes from the pipe member 33 due to the urging force of the spring member, and the claw member 34 is located outside the lower rectangular hole 23h of the lower lid member 23. By popping out the claw member 34, the movement of the wedge member 3 to the upper side is restricted. Therefore, when the connector 1 is carried, the wedge member 3 does not move in the main body 2, and the connector 1 can be easily handled.

The wedge member 3 is fitted into the engagement hole 43a of the flange 43, and the connector 1 is attached to the flange 43. Therefore, when the wedge member 3 moves downward, the flange insertion piece 30a of the wedge member 3 is configured to fit into the engagement hole 43a of the flange 43.

Next, a method of connecting the support column 42 of the scaffolding block 40 and the wire rope W connected to the crane or the like by the connecting tool 1 will be described.

As shown in FIG. 16, the scaffolding block 40 is lifted by connecting, for example, a wire rope W suspended at four points to a hook (not shown) of a crane to a support column 42. In the present embodiment, the connecting tool 1 is connected to one end of the wire rope W, and the connecting tool 1 is attached to the flange 43 of the support column 42 to connect the wire rope W and the support column 42.

As shown in FIG. 1, a shackle 44 is connected to the main body 2 of the connector 1. The shackle 44 includes a U-shaped member 45 formed in a substantially U-shape, and a rod-shaped screw member 46 screwed at the circular end of the U-shaped member 45. The screw member 46 of the shackle 44 is inserted into the insertion hole 22 g of the main body 2, and the screw member 46 is screwed to the circular end portion of the U-shaped member 45.

The wire rope W is hung on the shackle 44 attached to the main body 2, and the connector 1 and the wire rope W are connected.

Subsequently, the connector 1 is attached to the flange 43 of the support column 42. That is, as shown in FIG. 12, for example, with the claw member 34 pushed into the pipe member 33 by the fingertip of the operator, the wedge member 3 is pushed upward and the wedge member 3 is pushed up until the movement of the wedge member 3 stops. When the wedge member 3 is pushed up until it stops moving, as shown in FIGS. 11 and 12, the lower end of the flange insertion piece 30a stays at a position above the recess 10, and the flange 43 can be inserted into the recess 10. ..

Next, the connector 1 is attached to the flange 43 of the support column 42 in a state where the wedge member 3 is pushed up. That is, as shown in FIG. 12, the connector 1 is moved (in the direction of arrow B) so that the recess 10 of the main body 2 fits into the flange 43 of the support column 42, and is provided on the protruding portion 22d of the upper lid member 22. The connector 1 is moved toward the support column 42 until the support column contact portion 22e and the support column contact portion 24e provided on the protruding portion 24d at the lower end of the left side wall 21c are pressed against the outer surface of the support column 42.

After that, as shown in FIG. 13, when the fingertip of the operator is removed from the lower end of the wedge member 3, the wedge member 3 moves downward due to its own weight (direction of arrow C), and the flange insertion piece 30a of the wedge member 3 becomes the flange 43. It fits into the engagement hole 43a of. As described above, the flange insertion piece 30a is formed so as to smoothly enter the engagement hole 43a of the flange 43. Therefore, the flange insertion piece 30a is fitted into the engagement hole 43a up to a predetermined support position.

Then, as shown in FIG. 10, when the protruding portion 32a of the wedge member 3 comes into contact with the lower lid member 23 and the movement of the wedge member 3 to the lower side is stopped, the claw member 34 of the pipe member 33 changes to the lower lid member 23. The claw member 34 is located below the lower rectangular hole 23h of the pipe member 33 and protrudes from the pipe member 33 by the urging force of the winding spring 34a as a spring member. As a result, even if a force for moving the wedge member 3 upward is applied, the wedge member 3 does not fall out of the main body 2 due to the claw member 34. As described above, in the present embodiment, the wedge member 3 is firmly fitted into the engagement hole 33a of the flange 43 by dropping the wedge member 3 without hitting the upper end of the wedge member 3 with a hammer or the like. ..

As described above, according to the connector 1 of the present embodiment, the flanges 43 of the columns 42 are fitted into the recesses 10 so as to be sandwiched from above and below, and the protrusions 22d and 24d located above and below the recesses 10 are the columns 42. Is in contact with the outer surface of the. Then, the wedge member 3 fits into the engagement hole 43a of the flange 43. As a result, the main body 2 is connected to the support column 42 so as to wrap around the flange 43, so that the connector 1 is firmly held by the flange 43. Therefore, even if the connector 1 is lifted via the shackle 44, it is possible to prevent the flange 43 from being deformed. Further, since the wire rope W is not directly connected to the support column 42, the wire rope W is not damaged.

Further, after the connector 1 is attached to the flange 43, for example, when the operator removes the connector 1 from the flange 43, the claw member 34 of the wedge member 3 is pushed toward the pipe member 33, and the wedge member 3 is raised. Just move it in the direction. Therefore, it is not necessary to drive the lower end with a hammer or the like, the wedge member 3 is not damaged by the impact, and the durability is excellent.

It should be considered that the embodiments disclosed this time are exemplary in all respects and not restrictive. The scope of the present invention is shown by the scope of claims rather than the description of the embodiment described above, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

The scaffolding connector of the present invention is used in the large assembly method and the large payment method.

1: Connecting tool 2: Main body part 3: Wedge member 10: Recessed part 21: Side wall part 22: Upper lid member 22e: Strut contact part 22f: Rectangular hole 23: Lower lid member 23f: Upper rectangular hole 23h: Lower rectangular hole 24e: Strut contact part 30: Wedge body part 30a: Flange insertion piece 30b: Support part 30d: Space 30s: Shoulder part 31: Upper piece 32: Lower piece 32a: Protruding part 33: Pipe member 34: Claw member 34a: Winding spring (Spring member)
42: Support column 43: Flange 43a: Engagement hole 44: Shackle (connection means)
W: Wire rope

Claims (10)

It is a scaffolding connector for connecting a support column provided with a flange having an engaging hole on a surface extending in a substantially horizontal direction, and connecting the support column and a lifting device for lifting the support column.
It is provided with a box-shaped main body and a wedge member that is vertically movable and housed inside the main body and is fitted into an engaging hole of the flange.
The main body
The U-shaped side wall in a plan view that constitutes the front, back, and left sides of the main body,
The upper lid member located above the side wall and forming the upper surface,
It has a lower lid member located below the side wall portion and constitutes a lower surface.
A connecting means for connecting the lifting device or a part thereof to the main body,
A recess for fitting the flange so as to sandwich it from above and below is provided.
Contact surfaces that come into contact with the columns are provided on the upper and lower left ends of the main body.
A scaffolding connector characterized in that a claw member that can be freely moved in and out is provided at a lower end portion of the wedge member. The wedge member has a bifurcated wedge main body, an upper piece located on the upper side of the wedge main body, and a lower piece located on the lower side of the wedge main body.
The upper lid member is provided with an upper rectangular hole into which the upper piece is inserted.
The lower lid member is provided with a lower rectangular hole into which the lower piece is inserted.
The scaffolding connector according to claim 1, wherein the wedge member is supported by the upper rectangular hole and the lower rectangular hole so as to be vertically movable. The lower piece of the wedge member has a protruding portion that comes into contact with the lower lid member and a pipe member provided on the opposite side of the protruding portion so that the wedge member does not fall out of the main body. The scaffolding connector according to claim 2, wherein the claw member is provided on the pipe member so as to be freely accessible. The wedge main body portion has a space for accommodating a flange insertion piece formed in a size that can be inserted into the engagement hole of the flange and the flange portion fitted into the main body portion from the concave portion. Claims 1 to 1, wherein the flange insertion piece is inserted into the engagement hole of the flange by the weight of the wedge member, which is provided with a support portion separated from the insertion piece. The scaffolding connector according to any one of 3. The scaffolding connector according to claim 2, wherein the wedge main body portion has a shoulder portion that comes into contact with the upper lid member when the wedge member is moved upward. The scaffolding connector according to claim 3, wherein the claw member is urged by a spring member in a direction of protruding from the pipe member from a state of being housed in the pipe member. The pipe member is provided with a window portion through which the claw member can enter and exit.
The claw member is rotatably attached to a shaft attached to the pipe member, and the claw member pops out from the window portion by the urging force of the spring member attached to the shaft. The scaffolding connector according to claim 6. The lower rectangular hole is formed in a size such that the lower piece, the pipe member, and the claw member housed in the pipe member can move up and down.
When the wedge member is located above, the claw member abuts on the edge of the lower rectangular hole, is kept housed in the pipe member, and the wedge member moves downward to form a lower rectangular hole. When the contact between the hole and the claw member is released, the claw member rotates due to the urging force of the spring member and pops out from the pipe member, and the claw member and the lower lid member come into contact with each other to cause the wedge member. The scaffolding connector according to claim 7, wherein the movement in the upward direction is restricted. A large assembly method characterized in that the scaffolding connector according to any one of claims 1 to 8 is used. A large-payment construction method characterized in that the scaffolding connector according to any one of claims 1 to 8 is used.

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