JP2001090335A - Tightening structure of scaffolding having tightening part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tightening structure of a scaffolding having a tightening part which can surely and easily fitted to a stay without hitting by a hammer, and sustain the external force applied in both directions (vertical direction). SOLUTION: In the tightening structure of the scaffolding having the tightening part of a temporary scaffolding 10 to fit a fitting member 12 to a stay 11 adjacent thereto by fitting a fitting part 14d provided in an end of the fitting member 12 to a fitting hole 16 provided on the stay 11 side, a tightening member body 19 is turnably provided on the fitting part 14d side, a working bolt 20 as a 'working member' to turn the tightening member body 19, a locking piece 19d formed on the tightening member body 19 is attached/ detached to/from a circumferential edge part (an inclined surface part 17a) of the fitting hole 16 by turning the tightening member body 19 using the working bolt 20, the fitting part 14d is prevented from coming off from the fitting hole 16 in the fitting part 14d in a locked condition, while the fitting part 14d is detached from the fitting hole 16 in an unlocked condition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fastening structure of a mounting member for a temporary scaffold assembled along an outer periphery of a building or the like.

[0002]

2. Description of the Related Art Conventionally, as a temporary scaffold of this kind,
There is one as shown in FIG. In this temporary scaffold 1, a large number of columns 2 are erected at predetermined intervals along the outer periphery of the building, and each column 2 has a receiving bracket at predetermined intervals along the length (height) direction. 3 are provided.

[0003] A large number of scaffolding plates 4 are bridged at predetermined intervals along the height direction between adjacent struts 2, and a protective mounting member 5 is provided above the scaffolding plates 4. It is laid between the bridges.

[0004] As shown in FIG. 11, this protective mounting member 5 hits both ends with a hammer so that the wedge member 5 a is inserted from above into a fitting hole 6 formed by the column 2 and the receiving bracket 3. It is driven in and fixed so that it does not come off easily.

On the other hand, when removing the protective mounting member 5, as shown in FIG. 12, the wedge member 5a is detached from the metal fitting 3 by hitting it with a hammer from below.

[0006]

However, in such a conventional device, the wedge member 5a of the protective mounting member 5 is detached by hitting it with a hammer. Since the metal noise becomes noise, the burden on the worker is large, and the wedge member 5a is merely fitted, so that depending on the hammer striking condition, proof strength in one direction (downward) can be expected. However, the response force in the opposite direction (upward) may be extremely low.

Therefore, according to the present invention, it is possible to securely and easily mount the apparatus on a column without hitting it with a hammer, and to effectively bear external forces acting in both directions (up and down directions). It is an object to provide a binding structure of a scaffold with a binding portion.

[0008]

In order to achieve the above object, according to the first aspect of the present invention, a fitting portion provided at an end of a mounting member is provided in a fitting hole provided on a support column side. In a fastening structure of a scaffold with a fastening portion for fitting and attaching an attachment member to the adjacent support, a fastening member body is rotatably provided on the fitting portion side, and an operating member for rotating the fastening member body is provided. Provided, and by moving the operating member,
By rotating the binding member main body, the locking piece formed on the binding member main body is disengaged from the lower part of the periphery of the fitting hole, and in the locked state, the fitting portion is disengaged from the fitting hole. Prevent escape,
It is characterized in that the scaffold has a fastening structure with a fastening portion that enables the fitting portion to be detached from the fitting hole in an unlocked state.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, a small slope formed in the fitting portion in a locked state abuts on an upper peripheral portion of the fitting hole. Thus, the fitting portion is further prevented from coming off from the fitting hole.

According to a third aspect of the present invention, in addition to the first or second aspect, the operating means has an operating bolt, and the operating bolt is screwed to the fastening member main body. The distal end portion of the operating bolt is brought into contact with a member other than the binding member main body, and the operating bolt is screwed or loosened to rotate the binding member main body.

[0011]

Embodiments of the present invention will be described below.

[First Embodiment of the Invention] FIGS. 1 to 6 show a first embodiment of the present invention.

First, the structure will be described.
A pillar of a temporary scaffold 10 arranged along the periphery of a building, and a protective mounting member 12 between these adjacent pillars 11.
Is spanned.

The protective mounting member 12 has a mounting member main body 13 made of steel pipe, a wedge member 14 fixed to both ends of the mounting member main body 13, and a fastening member 15.

The wedge member 14 has a vertical wall 14a and a side wall 14b, and has a substantially U-shaped horizontal cross section. The end of the mounting member main body 13 is inserted into the upper part 14c to form the side wall 14b. Is fixed to the side wall 1 by welding.
4b is tapered downward to form a fitting portion 14d, and the fitting portion 14d is inserted and fitted into a receiving bracket 17 fixed to the column 11.

The receiving bracket 17 is provided around the column 11
The fitting holes 16 are formed between the struts 11 by being fixed by welding at four locations at intervals of 0 °.
Has an inclined surface portion 17a which forms a part of the peripheral edge portion of the main body.

The binding member 15 for preventing the wedge member 14 from coming off is provided on both side walls 14b of the wedge member 14.
The coupling member 19 is provided rotatably with a pivot shaft 18 and has a substantially U-shaped horizontal section, and an operating bolt 20 for rotating the coupling member body 19.

The binding member main body 19 has an intermediate wall portion 19a located at the center of the U-shape, and both side wall portions 19b located on both sides of the intermediate wall portion 19a. The side wall portions 19b are rotatably attached to the side wall 14b of the wedge member 14 by a rotation shaft 18, and an operation bolt 20 is screwed into a female screw portion 19c formed on the intermediate wall portion 19a. The tip 20 a of the bolt 20 is in contact with the vertical wall 14 a of the wedge member 14. This allows
By turning the operation bolt 20, the binding member main body 19 is turned.

The binding member body 19 has a lower end portion formed by bending a locking piece 19d for locking to a lower end of the inclined surface portion 17a of the receiving member 17, and has a mounting member at the upper end portion. A stopper piece 19e is formed which abuts the main body 13 and prevents the binding member main body 19 from rotating more than a predetermined angle.

Next, the operation will be described.

In order to bridge the protective mounting member 12 on the column 11 adjacent to the temporary scaffold 10, the fitting portion 14d of the wedge member 14 is inserted into the fitting hole 16.

When the operating bolt 20 is screwed in, the distal end portion 20a of the operating bolt 20 presses the vertical wall 14a of the wedge member 14 to move the binding member 15 about the rotation shaft 18 as shown in FIGS. 2. Rotate clockwise in the order shown in FIG. At this time, first, as shown in FIG. 1, the locking piece 19 d of the binding member main body 19 is locked to the lower end of the inclined surface portion 17 a of the receiving bracket 17. And further, the binding member 15
Is rotated, the locking piece 1 of the binding member body 19 is rotated.
9d slides on the lower end of the inclined surface portion 17a of the receiving member 17, whereby the wedge member 14 is inserted deeper into the receiving member 17, and the wedge member 14 is securely inserted into the receiving member 17 as shown in FIG. In the fitted state, the locking of the locking piece 19d of the binding member main body 19 to the inclined surface 17a of the receiving bracket 17 is completed.

As a result, the wedge member 14 is not locked by hitting with a hammer, but by locking the inclined surface portion 17a of the receiving member 17 with the locking piece 19d of the binding member main body 19.
From the fitting hole 16 can be prevented.

On the other hand, when the protective mounting member 12 is to be removed, the operating bolt 20 is rotated in the opposite direction, whereby the locking piece 19d of the binding member body 19 has the inclined surface portion 17a of the receiving member 17. Release the locked state.

Thus, the wedge member 14 can be easily removed from the metal fitting 17 by lifting the protective mounting member 12 upward without hitting from below with a hammer as in the prior art.

As described above, since the fastening member 15 can be engaged with and disengaged from the receiving member 17 only by rotating the operating bolt 20, there is no need to secure the fitting force by hitting with a hammer as in the prior art. Therefore, it is not necessary to hit the wedge member 14 with a hammer at any time when the wedge member 14 is fitted or removed.
The burden on the worker can be reduced, and it can effectively counter any external force in the vertical direction of the protective mounting member 12.

When the binding member body 19 has rotated a predetermined amount, the stopper piece 19e abuts on the end of the mounting member body 13 as shown in FIG. Will be suspended. Therefore, even when the protective attachment member 12 is detached from the column 11, the attachment of the binding member body 19 can be suppressed, so that the usability can be improved.

[Second Embodiment] In a second embodiment of the present invention, as shown in FIGS. 7 and 8, a side wall 14b of a wedge member 14 fixed to both ends of a mounting member body 13 is provided. A small slope portion 14e having a tapered shape is formed at a boundary portion with the fitting portion 14d downward.

The middle wall portion 19a of the binding member body 19 is slightly raised at the center so that the vertical cross section has a U-shape. The / 3 portion has a flank 19g.

When the operating bolt 20 is screwed in, the binding member 15 is rotated, and the locking piece 19 of the binding member body 19 is rotated.
The operation in which d slides on the lower end of the inclined surface portion 17a of the receiving member 17 to insert the wedge member 14 deeper into the receiving member 17 is the same as in the second embodiment of the present invention. Is different from the first embodiment of the present invention.

In the first embodiment of the present invention, the binding force is generated by the inclined end surface 14f of the side wall 14b of the wedge member 14 and the inclined surface portion 17a of the receiving member 17 being in close contact with each other.

On the other hand, in the second embodiment of the present invention, as shown in the explanatory view of FIG. 9, the positional relationship between the fastening member main body 19 and the receiving member 17 in the locked state is different from that of the receiving member 17. In the state of being locked to the lower end of the inclined surface portion 17a, that is, in the locking completion position where the boundary portion 19h between the intermediate wall portion 19a of the binding member 15 and the locking piece 19d coincides with the lower end of the inclined surface portion 17a of the receiving fitting 17, Intermediate wall 1 of member body 19
The flank 19g having an inclination angle θ from the center of 9a does not come into contact with the inclined surface 17a of the receiving bracket 17, and the press contact surface 1
9 f and the lower half of the inclined surface 17 a of the receiving bracket 17 are in close contact with each other to generate a binding force. Therefore, in this case, unlike the first embodiment of the present invention, the inclined end surface 14f of the side wall 14b of the wedge member 14 and the inclined surface portion 17a of the receiving bracket 17 do not adhere to each other.

At the locking completion position, the locking piece 19d of the binding member main body 19 is locked at the lower portion of the peripheral edge of the receiving member 17 to prevent the wedge member 14 from being pulled out upward. The small slope portion 14e of the wedge member 14 abuts on the upper part, and the downward movement of the wedge member 14 is prevented.

The locking state is determined by the wedge member 14.
Is maintained within a range in which the small slope portion 14e formed in the contact portion 17a can be in contact with the upper peripheral edge of the receiving member 17.
The same effect can be obtained even when the slope of the inclined surface portion 17a is slightly changed. Even so, a sufficient binding force can be guaranteed while reliably preventing the wedge member 14 from moving up and down with respect to the receiving member 17.

Also, even if there is a difference in the slope of the inclined surface portion 17a of the receiving member 17 depending on the manufacturer, the vertical movement of the wedge member 14 with respect to the receiving member 17 is reliably prevented in correspondence with any of the differences. , Can guarantee sufficient binding strength.

In both the first embodiment of the invention and the second embodiment of the invention, the actuating means for rotating the binding member main body 19 includes the operating bolt 2 of the above embodiment.
Not limited to zero, a cam mechanism or the like may be used.

In both Embodiment 1 and Embodiment 2 of the present invention, the mounting member has been described as a protective mounting member. However, the mounting member is not limited to this, and the supporting member of the temporary scaffold is used. Of course, it may be a bracket, a handrail, a brace, or the like attached to the receiving bracket 17 provided in the above.

[0038]

As described above, according to the first aspect of the present invention, by operating the operating member and rotating the binding member main body, the locking piece formed on the binding member main body. Can be engaged and disengaged with the peripheral edge of the fitting hole, so that it is not necessary to hit with a hammer to secure the fitting force as in the related art. Also, there is no need to hit with a hammer,
The noise caused by the metallic noise can be prevented, the burden on the worker can be reduced, and the external force acting on the mounting member in the opposite direction can be effectively counteracted.

According to the second aspect of the present invention, in addition to the above-described effects, a sufficient tightening force can be guaranteed even if there is an error in the manufacture of the support column or a difference in the inclined surface of the receiving bracket for each manufacturer.

According to the invention described in claim 3, according to claim 1
Alternatively, in addition to the effect of the second aspect, with a simple structure in which the operating means is an operating bolt, the fastening member main body can be rotated and disengaged only by rotating the operating bolt.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a main part according to Embodiment 1 of the present invention.

FIG. 2 is a cross-sectional view of a main part in a state where an operation bolt is closed from the state shown in FIG. 1 according to the first embodiment.

FIG. 3 is a cross-sectional view of a main part in a tightened state in which an operation bolt is further closed from the state shown in FIG. 2 according to the first embodiment.

FIGS. 4A and 4B are views showing a binding member main body according to the first embodiment, wherein FIG. 4A is a plan view and FIG.

FIG. 5 is a sectional view taken along line AA of FIG. 4B according to the first embodiment.

FIG. 6 is a fragmentary cross-sectional view showing a state where a stopper piece of the binding member main body according to Embodiment 1 is in contact with the mounting member main body.

FIG. 7 is a cross-sectional view of a main part according to Embodiment 2 of the present invention.

FIG. 8 is a cross-sectional view of a principal part in a tightened state in which an operation bolt is further closed from the state shown in FIG. 7 according to the second embodiment.

FIG. 9 is an enlarged view of a main part showing a positional relationship between a binding member and a receiving member according to the second embodiment.

FIG. 10 is a perspective view showing a temporary scaffold.

FIG. 11 is a cross-sectional view showing a conventional example, in which a wedge member of a protective mounting member is fitted.

FIG. 12 is a cross-sectional view showing the same conventional example, showing a state in which a wedge member of a protective mounting member is removed.

[Explanation of symbols]

 10 Temporary scaffold 11 Prop 12 Protective mounting member 13 Mounting member body 14 Wedge member 14d Fitting part 14e Small slope part 14f Inclined end face 15 Tightening member 16 Fitting hole 17 Receiving bracket 17a Slant surface part 19 Tightening member body 19d Locking piece 19e Stopper piece 19f Pressure contact surface 19g Flank 20 Operating bolt (operating member) 20a Tip

Claims (3)

[Claims] 1. A fastening structure for a scaffold with a fastening portion, wherein a fitting portion provided at an end of a mounting member is fitted to a receiving bracket provided on a column side to attach the mounting member to the column. The binding member body is rotatably provided on the joint portion side, and an operating member for rotating the binding member body is provided, and the operating member is moved to rotate the binding member body, thereby A locking piece formed on the main body is disengaged from a lower portion of a peripheral edge of the fitting hole to prevent the fitting portion from coming out of the fitting hole in a locked state, and the unlocking state in the unlocked state. A binding structure for a scaffold with a binding portion, wherein the scaffold is detachable from the fitting hole. 2. A fastening structure for a scaffold with a fastening portion, wherein a fitting portion provided at an end of a mounting member is fitted to a receiving bracket provided on a column side to attach the mounting member to the column. The binding member body is rotatably provided on the joint portion side, and an operating member for rotating the binding member body is provided, and the operating member is moved to rotate the binding member body, thereby A locking piece formed on the main body is disengaged from the lower part of the periphery of the fitting hole to prevent the fitting part from coming out of the fitting hole in the locked state, and is formed on the fitting part. A scaffold with a binding portion, wherein the small slope portion is configured to abut on the upper peripheral edge of the fitting hole, and the fitting portion can be detached from the fitting hole in an unlocked state. Tight structure. 3. The operating member has an operating bolt, the operating bolt is screwed into the binding member main body, and a tip end of the operating bolt is brought into contact with a member other than the binding member main body, The fastening structure for a scaffold with a fastening portion according to claim 1 or 2, wherein the fastening member main body is rotated by screwing or loosening an operation bolt.