JP2001329691A - Stand for holding beam member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a beam holding stand capable of simply and easily holding and fixing a beam member to a predetermined attitude and also of carrying out the work safely. SOLUTION: This is a stand 4 for holding a beam member horizontally when attaching a required member to a beam member 1 comprising an H-steel, and comprises a horizontal underframe 8, a, leg body 9 for fixing the horizontal underframe 8, and a pair of holders 10 and 10 for holding a lower flange 1a of a beam member 1 placed on a horizontal underframe 8, and each holder 10 comprises a vertical lever 11 supported in a movable manner up and down and rotatable manner between each holder 10 and the horizontal underframe 8 on the underframe 8 and a linking arm 12 linked to a lower flange 1a of the beam member 1, and a restricting means 26 is interposed, which restricts the holding of the beam member 1 by the holder 10 at an outward position horizontally reversed around, from the frame hold position holding the lower flange 1a of the beam member 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for holding a beam member made of H-section steel such as a suspended scaffold or the like with a required working member. Related to three beam material holding units.

[0002]

2. Description of the Related Art In the construction of a high-rise building having a steel frame structure, as shown in FIG. 16, when a beam 1 is attached between adjacent pillars 2, the required height of the beam 1 is increased by a crane. In this case, a hanging scaffold 3 is attached to the beam 1 in advance on the ground, and the beam 1 is lifted as it is as shown in the drawing. 2 has been carried out. The hanging scaffold 3 is a scaffold for performing various operations along the beam 1. The hanging scaffold 3 can be attached to the column 2 after the beam 1 is attached to the column 2. In recent years, the method of attaching the hanging scaffold 3 to the beam 1 as described above has been adopted because the work is very dangerous. Note that an H-section steel is used as the column member 2.

[0003] As described above, when the hanging scaffold 3 is pre-fixed on the ground to the beam 1 made of H-section steel, the beam 1 is held horizontally in a substantially laterally sectional H-shape. Is used. Thus, the conventional beam-holding gantry is composed of a horizontal member and a pair of leg members on both sides for fixing both ends of the horizontal member, and the two beam-member holding gantry are installed at required intervals, The beam is placed on these horizontal members in an H-shaped posture with a substantially horizontal cross section, and the beam is held and fixed on the horizontal members using a screw-type U-shaped clamp or a vise at each mount.

[0004]

However, the conventional beam-holding gantry as described above requires a U-shaped clamp and a vise to hold and fix the beam. There was a problem. Therefore, an object of the present invention is to provide a beam material holding base that can easily and easily hold and fix a beam material in a predetermined posture and that can safely perform work.

[0005]

The invention according to claim 1 is
A beam holding frame 4 for holding the beam 1 horizontally in an H-shaped posture when attaching a required member such as a hanging scaffold 3 to the beam 1 made of an H-shaped steel. And a leg 9 for fixing the horizontal frame 8
And the lower flange 1 of the beam 1 placed on the horizontal underframe 8
a from the both sides, each holder 10 penetrates vertically through the horizontal frame 8, and the vertical rod 1 which is vertically movable and rotatably supported by the frame 8.
1 and a locking arm 12 projecting from the upper end of the vertical rod 11 at a substantially right angle and locked to the lower flange 1a of the beam member 1. Each vertical rod 11 is mutually connected to another vertical rod 11. A flange holding position P at which each holder 10 can hold the lower flange 1a of the beam 1 so that it can be tilted only in the facing inward direction.
A restricting means 26 is interposed between each holder 10 and the horizontal underframe 8 for restricting the holder 1 from holding the beam 1 at an outward position that is inverted horizontally around the vertical rod 11 from the center. It is characterized by.

According to a second aspect of the present invention, in the beam holding frame according to the first aspect, the restricting means protrudes from the outer peripheral surface of the lower end of the vertical rod immediately below the locking arm in the same direction as the locking arm. The protruding rod 30 protrudes from the lower part of the horizontal underframe 8, and the distal end of the protruding rod 30 abuts slightly on the front side where the holder 10 is inverted from the flange holding position P horizontally to the outward position. Rotation preventing piece 31 for preventing rotation of holder 10
And characterized by the following.

According to a third aspect of the present invention, in the beam holding frame according to the second aspect, the locking arm of the holder is positioned on the rotation preventing piece at a position higher than a predetermined height from the upper surface of the horizontal underframe. In this embodiment, an opening 31a is provided to pass the tip of the protruding rod 30 so that the holder 10 can be rotated 360 °.

According to a fourth aspect of the present invention, there is provided the beam holding frame according to any one of the first to third aspects, wherein a locking member 27 for connecting the frame is provided at one end of the horizontal frame 8, and the other end is locked. The device 27 is provided with a locked device 28 to be engaged and disengaged.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 (A) shows a beam 1 made of H-section steel held horizontally by a pair of beam holding frames 4, 4 on both sides according to the present invention in a substantially horizontal cross section. FIG. 1B is a side view showing a state in which the suspension scaffold 3 as a working member is attached to the beam 1, and FIG. FIG. 2A is a cross-sectional view taken along the line XX of FIG. 1A, and shows a state in which the hanging scaffold 3 is attached to the beam 1, and FIG. It is an enlarged view which shows the attachment part of the suspended scaffold 3.

The hanging scaffold 3 has a well-known structure comprising a lower scaffold main body 3a, each framed by a plurality of single tubes P, and handrails 3b, 3b erected on both sides of the scaffold main body 3a. The scaffold plate W is laid over the scaffold body 3a. In order to attach the hanging scaffold 3 to the beam 1, as shown in FIGS. 1 and 2, an example of the beam 1 held in a substantially horizontal H-shaped cross section by the beam holding frames 4, 4. A plurality of mounting pieces 5 with bolt holes are welded to the lower surface of the lower flange 1a at predetermined intervals, and a substantially U-shaped hanging member 6 is mounted on the scaffold body 3a at the same interval as the mounting pieces 5. Then, the upper end of each suspension member 6 may be fixed to the mounting piece 5 on the lower surface of the beam 1 with bolts and nuts 7. Note that the beam member 1 includes a web 1b and flanges 1a, 1a at both upper and lower ends of the web 1b.

FIG. 3 is a plan view of the beam holding base 4 according to the present invention, FIG. 4 is a front view, and FIG. 5 is a side view. As can be seen from these drawings, each beam holding frame 4 is composed of a horizontal frame 8 on which the beam 1 is placed, and a pair of legs 9 for fixing the horizontal frame 8 to a required height. 9 and a pair of holders 10, 10 for holding the lower flange 1 a of the beam 1 made of H-shaped material placed on the horizontal underframe 8 from both sides, and each holder 10 holds the horizontal underframe 8. A vertical rod 11 that penetrates up and down and is vertically rotatable and rotatably supported by the underframe 8.
And projecting from the upper end of the vertical rod 11 at a substantially right angle.
And a locking arm 12 locked to the lower flange 1a.

The vertical rods 11 of each holder 10 can be tilted in the direction facing each other.
Between the horizontal frame 8 and the outer side, the holder 10 is turned horizontally around the vertical rod 11 from the flange holding position P (see FIGS. 9 and 11) for holding the lower flange 1 a of the beam 1. At the position, a regulating means 26 for regulating the beam material 1 from being held by the holder 10 is interposed.
In addition, a locking arm 12 projecting from the upper end of each vertical rod 11 at a substantially right angle is provided with a reinforcing piece 1 obliquely interposed between the vertical arm 11 and the vertical arm 11.
Reinforced by 7. The vertical rod 11 of the holder 10 is formed by a round steel pipe, and the locking arm 12 is formed by a square steel pipe.

The structure of the beam holding frame 4 will be described in more detail. As can be seen from FIGS. 5 and 6, the horizontal frame 8 includes a pair of frame materials 13 made of channel steel. Are arranged back to back at regular intervals so that the groove openings face outward. A state in which both locking arms 12 protrude from each other between the back surfaces of both frame members 13. A groove 14 is formed to penetrate the holder 10 so that both holders 10 can be inserted and removed. At both ends of the groove 14, supporting members 15 made of an H-shaped material to which the rear part of the vertical rod 11 can abut are provided, respectively. A plate-like supporting portion 16a, which supports the front side surface of the vertical rod 11 and the tip end of the locking arm 12, in a state where the back portion of the supporting member 15 is vertically contacted with the supporting member 15,
16b are provided respectively.

As can be seen by referring to the right and left portions of the center of FIG. 4, each holder 10 has the rear portion of the vertical rod 11 abutting against the support member 15 and the front side portion thereof supporting. Since it is supported by the piece 16a, it can be moved up and down in this state. At the time of downward movement, the upper end of the vertical rod 11, the locking arm 12 and the reinforcing piece 17 enter the groove 14, and in this position, The locking arm 12 is supported by the support piece 16a,
16b, the holders 10 are supported in a horizontal position, thereby preventing each holder 10 from slipping downward. Further, since the rear portion of the vertical rod 11 is in contact with the support member 15 and the front side surface portion thereof is supported by the support piece 16a as described above, the locking arm 12 is pulled up from the groove 14. In the above, each vertical rod 11 can be tilted in an inward direction facing each other, but cannot tilt in an outward direction opposite to this inward direction.

In each holder, a horizontal underframe 8 is provided with a locking arm 12 locked to the lower flange 1a of the beam 1.
A pin hole 18 is provided at the lower end of the vertical rod 11 protruding from the lower surface of the holder, and a pin 19 for retaining the holder is attached to the pin hole 18.
Is attached to the tip of a chain 21 connected to a bolt 20 fixed to the vertical rod 11.

A leg 9 for fixing the horizontal underframe 8 to a required height is formed of a pair of diagonal members 22, 22 arranged in a substantially U-shape.
And a connecting piece 2 for connecting the upper ends of the two oblique members 22, 22
3 and the opposed diagonal members 22, 22 of the two legs 9, 9
The legs 9 are connected to each other by a connecting rod 24, and a grounding base 25 is attached to the lower end of each leg 9. And, on the tops of the two legs 9, 9, the frame members 13, 1 for forming the horizontal frame 8 are formed.
3 are mounted and fixed at both ends. Reinforcing pieces 13a are arranged at required intervals in the groove opening of the frame member 13.

FIG. 6A is an enlarged view of a portion surrounded by a circle indicated by an arrow A in FIG. 4, FIG. 6B is a side view thereof, and FIG. An enlarged view of a portion surrounded by a circle indicated by an arrow B, and FIG. As can be seen from FIGS. 4 and 6, an anchor 27 for connecting the gantry is provided at one end of the horizontal underframe 8, and the anchor 27 is detachably attached to the other end of the horizontal underframe 8. Latch 28 to be locked
Is provided. One end of the locking member 27 has two frame members 1.
Pins 29, 29 are pivotally mounted between the rear surfaces of the pins 3 and 13, and are rotatable in the vertical direction as shown in the figure. Further, a handle 27b for rotating operation is provided at the free end of the locking member 27. The to-be-latched member 28 is composed of a retaining pin that is laid horizontally between the rear surfaces of the two frame members 13, 13. Thus, for example, when connecting the two beam holding frames 4, 4, the locking recesses 27 a of the locking members 27 provided on one beam frame 4 hold the other beam holding frames 4. The two frames 4, 4 are connected to each other by being locked to a locking pin which is a locked member 28 provided on the frame 4.

The restricting means 26 holds the beam 1 by the holder 10 at the outward position where the holder 10 holds the lower flange 1a of the beam 1 from the flange holding position P and turns around the vertical rod 11 horizontally. This is because the rear portion of the vertical rod 11 is in contact with the support member 15 and the front side portion thereof is supported by the support piece 16a. When the holder 10 is used at an outward position where the locking arm 12 of the holder 10 faces the outside of the beam holding frame 4 as shown in FIG. Since the holder 10 does not perform its holding function and is dangerous, in order to avoid the danger, the holder 10
The purpose of this is to prevent the use of.

As shown in FIGS. 8 and 9, the restricting means 26 includes a projecting rod 30 projecting from the outer peripheral surface of the lower end of the vertical rod 11 directly below the locking arm 12 in the same direction as the locking arm 12.
And protruding below the horizontal underframe 8, and the holder 10
Is rotated from the flange holding position P for holding the lower flange 1a of the beam 1 about the vertical rod 11 to the horizontal position to reach the outward position, and the distal end of the protruding rod 30 comes into contact with the holder slightly. Rotation preventing piece 31 for preventing rotation of 10
It is composed of

The protruding rod 30 is made of, for example, a bolt, and the rotation preventing piece 31 is made of a channel having a U-shaped cross section. 8A, the lower surface of the locking arm 12 of the holder 10 is raised by h1 from the upper surface of the horizontal underframe 8 (the locking arm 12 is positioned at the lower flange 1a of the beam 1). (At a position slightly higher than the flange holding position P for holding the beam 1 by locking the beam 1 at this position, the beam 1 cannot be held at this position)
Between the position higher than this position and the position where the lower surface of the locking arm 12 rises h2 from the upper surface of the horizontal underframe 8 (the upper limit position of the vertical rod 11), so that the holder 10 can be freely rotated by 360 °. An opening 31a through which the distal end of 30 is passed is cut out. In this case, the holder 10 can move upward until the protruding rod 30 at the lower end of the vertical rod 11 hits the lower surface of the horizontal underframe 8 as shown in FIG. This is from the upper surface of the horizontal underframe 8 to a position h2 raised. Also, as shown in FIG. 9 (A), until the lower surface of the locking arm 12 of the holder 10 rises h1 from the upper surface of the horizontal underframe 8, the tip of the protruding rod 30 becomes as shown in FIG. 9 (B). Since it abuts against the rotation preventing piece 31, rotation from the flange holding position P to an outward position that is inverted by 180 ° is prevented.

FIGS. 10A and 10B show the regulating means 26 when the rotation preventing piece 31 is not provided with the opening 31a.
Here is an example. In this case, the locking arm 1 of the holder 10
2 at any position from the upper surface of the horizontal underframe 8 to the height h2, the distal end of the protruding rod 30 abuts against the rotation preventing piece 31.
Rotation to the outward position which is inverted by 0 ° is prevented.

FIG. 11 shows a state in which the beam 1 is prevented from overturning by the above-described beam holding frame 4.
And the lower end on the front side of the vertical rod 11 is supported by the supporting piece 16a, so that each vertical rod 11 faces the other vertical rod 11 in an inward direction. Although it is possible to incline, but it is not possible to incline in the outward direction opposite to this, even if the beam 1 tries to turn counterclockwise (or clockwise) with respect to FIG. 11 maintains the state of contact with the support member 15, thereby preventing the beam 1 from tipping over. If the holder retaining pin 19 is not provided, the vertical rod 11 of each holder 10 may be slightly rubbed along the support member 15, but the holder retaining pin 19 is inserted into the vertical rod 11 as shown in the figure. By wearing it,
Such a possibility that the vertical rod 11 is rubbed is eliminated, and the overturn of the beam 1 can be more reliably prevented.

FIGS. 12 to 14 show the beam holding frame 4 when a plurality of the beam frame 4 are connected and used.
The usage of is shown. When the beam holding frame 4 is not used, as shown in FIG.
The upper end of the vertical rod 11 of each holder 1 and the locking arm 12 are immersed in the groove 14 of the horizontal underframe 8 in a state where the retaining pins 19 are removed from the holder 1 and the respective locking arms 12 project from each other. . In this way, each holder 10 is
By being immersed in the inside, there is no protrusion on the upper surface of the horizontal underframe 8, so that the horizontal underframe 8 can be used as a stepping board or the like, and the appearance and appearance of the external appearance are improved.

For example, when the two beam holding frames 4 and 4 are connected to each other, first, the locking members 27 for linking the beam frames are turned upward like the beam beam holding frame 4 shown on the left side of FIG. And pull up as shown in the figure. In this state, the left and right beam holding frames 4 and 4 approach each other, and the left beam beam holding frame 4 is moved.
Of the locking member 27 of the right beam supporting frame 4
13 and the two beam material holding stands 4 and 4 as shown in FIG.
4 is connected. In FIG. 14, the two beam holding frames 4, 4 are connected in the left-right direction in the drawing, but a pair of beam beam holding frames 4, 4 arranged opposite to each other in a direction perpendicular to the paper surface. Holds one beam 1 by the following method.
A beam supporting frame 4 is used.

When the two beam holding frames 4 and 4 are used, the beam beam holding frames 4 are moved from the state shown in FIG.
Lift the two holders 10 and 10 respectively, and
The arm 1 is rotated around the center 1 so that the locking arms 12, 12 face outward. In this case, when each holder 10 is turned upside down as shown in FIGS. 8A and 8B, the protruding rod 30 of the restricting means 26 protrudes into the opening 31 a of the rotation preventing piece 31. So each holder 1
0 can be inverted by 180 ° from the state shown in FIG. Further, in the restricting means 26 illustrated in FIG. 10, since the protruding rod 30 of the restricting means 26 hits the rotation preventing piece 31, the rotation is restricted on the near side reaching the outward position.

As described above, the beam 1 is placed on the horizontal underframe 8 between the holders 10, 10 with the holders 10, 10 of the left and right beam holders 4 facing outward.
Place in shape posture. Then, by lifting each holder 10 facing outward and rotating each locking arm 12 so as to protrude in a direction opposite to each other, each locking arm 12 is moved to the lower flange 1a of the beam 1 as shown in FIG.
, Whereby the beam 1 is held and fixed in a horizontal H-shaped posture. Thereafter, in order to further ensure safety, the holder retaining pin 19 is inserted into the pin hole 18 of the vertical rod 11 of each holder 10 to prevent the holder 10 from being removed, and the operation is completed.

FIG. 15 shows an erroneous use of the holder 10 when a plurality of beam holding frames 4 are connected to each other as described above. That is, in the holder 10, the back of the vertical rod 11 is supported by the support member 15.
, The front side of which is supported by the supporting piece 16a, and each of the vertical rods 11 can be tilted inward in a direction facing each other, so that the holder 10 is locked. As shown in FIG. 15, the arm 12 is
The lower flange 1 of the beam 1 of the beam 1 placed on the connecting portion of the two beam holding frames 4, 4 at the outward position facing the outside
If the beam 1 is applied with a lateral load in the locked state, the beam 1
1 may fall into the inside of the beam material holding base 4 and cause an unexpected situation. Therefore, the holder 10 is
If you accidentally try to use it in the outward position as shown in
Restriction means 26 interposed between the vertical rod 11 of each holder 10 and the horizontal underframe 8 prevents the locking arm 12 of the holder 10 from being locked to the lower flange 1 a of the beam 1.

The operation of the regulating means 26 in this case will be described. As shown in FIGS. 8A and 8B, the holder 10 is rotated from the inward position to the outward position indicated by the solid line in FIG. At this time, until the lower surface of the locking arm 12 rises the height h1 from the upper surface of the horizontal underframe 8, the tip of the protruding rod 30 hits the rotation preventing piece 31, so that the holder 10 can be inverted to the outward position. Can not. In addition, between the position where the lower surface of the locking arm 12 rises from the upper surface of the horizontal underframe 8 by the height h1 and the position where it rises by h2, the tip of the protruding rod 30 passes through the opening 31a of the rotation preventing piece 31. Since the holder 10 can be rotated by 360 °, the locking arm 12 of the holder 10 can be directed to the outside of the beam holding frame 4 as shown by the phantom line in FIG. Numeral 12 is locked at the lower end of the opening 31a so as not to be lowered. The locking position is a position where the lower surface of the locking arm 12 rises by h1 from the upper surface of the horizontal underframe 8, and the locking arm 12 is locked to the lower flange 1a of the beam 1 so that the beam 1 Of the holder 10 cannot be locked by the locking arm 12 because
Can not be used.

As shown in FIGS. 10A and 10B, when the opening 31a is not provided in the rotation preventing piece 31 of the restricting means 26, when the holder 10 is rotated, it is turned outward. Since the tip of the protruding rod 30 abuts against the rotation preventing piece 31 slightly before being inverted, the holder 10 cannot be set to the outward position, and therefore the holder 10 cannot be used as in the above case. Will be.

As shown in FIG. 14, in a state where the two beam holding frames 4 and 4 are connected to each other, each beam holding frame 4 is held and fixed by the beam beam holding frame 4 in an approximately H-shaped cross section. A required member such as a suspended scaffold 3 is attached to the beam 1 on the beam holding frame 4. When, for example, the hanging scaffold 3 is attached to the beam 1 of each beam holding frame 4, the retaining pin 19 of each holder 10 is pulled out, and each holder 10 is attached to the beam 1.
The beam 1 is lifted by a crane from a state where the beam 1 is appropriately rotated so as to come off, and the beam 1 is attached to the pillars 2 and 2 as shown in FIG.

As described above, according to the beam holding frame 4, the beam 1 can be quickly and easily held and fixed in a predetermined posture by a simple operation of lifting each holder 10 and rotating it appropriately. As a result, the working efficiency can be greatly improved as compared with the conventional beam holding frame. Also,
When the holder 10 is erroneously used in the outward position as shown in FIG. 15, the holder 10 is locked by the regulating means 26 interposed between the vertical rod 11 of each holder 10 and the horizontal underframe 8. Arm 12 is connected to lower flange 1 of beam 1
Since it cannot be locked to a, holder 1
It is possible to avoid an unexpected situation due to incorrect use of 0.

[0032]

According to the first aspect of the present invention, there is provided a beam holding frame, comprising a horizontal underframe, a leg, and a pair of holders for holding, from both sides, a lower flange of a beam placed on the horizontal underframe. Each holder penetrates the horizontal underframe vertically, and is vertically movable and rotatably supported by the underframe. And a locking arm that is locked to the
With a simple operation of simply lifting each holder and rotating it appropriately, the beam material can be quickly and easily held and fixed in a predetermined position, and can be mounted on a conventional beam material holding base using a U-shaped clamp or vise. In comparison, work efficiency can be greatly improved.

Further, since each holder can be tilted only in an inward direction in which each vertical rod is opposed to another vertical frame, if the holder is erroneously used in the outward position, the holder holding function is exhibited. This may cause the vertical rod of the holder to fall inside the beam holding frame, which may cause an unexpected situation. By the means, the locking arm of the holder cannot be locked to the lower flange of the beam material, so that an accidental situation due to incorrect use of the holder can be avoided.

According to a second aspect of the present invention, the restricting means includes a projecting rod projecting from the outer peripheral surface of the lower end of the vertical rod in the same direction as the locking arm, and a projecting part projecting below the horizontal underframe. According to the structure in which the holder is turned slightly outward from the flange holding position to the outward position and the rotation preventing piece is formed by the end of the protruding rod abutting to prevent the holder from rotating, the structure of the regulating means is simple. Thus, the production becomes easy.

According to a third aspect of the present invention, the tip of the protruding rod is provided on the rotation preventing piece so that the locking arm of the holder can freely rotate the holder at a position higher than a predetermined height from the upper surface of the horizontal underframe. By providing an opening through which the holder can be rotated 360 ° at a position higher than a certain height when the holder is used in a normal use state,
The work of setting and removing the beam material from the beam material holding base is facilitated.

According to a fourth aspect of the present invention, a locking member for connecting the gantry is provided at one end of the horizontal underframe, and a locked member is provided at the other end so that the connecting member is removably locked. This makes it possible to easily and easily connect the plurality of rotation preventing pieces in an adjacent state.

[Brief description of the drawings]

FIG. 1A shows a state in which a beam is horizontally held by a beam holding frame according to the present invention in a substantially horizontal cross-sectional H-shape, and a state in which a hanging scaffold is attached to this beam. (B) is an end view thereof.

2A is a cross-sectional view taken along the line XX of FIG. 1A, showing a state in which a hanging scaffold is attached to a beam, and FIG. 2B is a mounting portion of the hanging scaffold attached to the beam. FIG.

FIG. 3 is a plan view of a beam material holding base according to the present invention.

FIG. 4 is a front view of the beam material holding base.

FIG. 5 is a side view of the beam holding frame.

6A is an enlarged view of a portion surrounded by a circle indicated by an arrow A in FIG. 4, and FIG. 6B is a side view thereof.

7A is an enlarged view of a portion surrounded by a circle indicated by an arrow B in FIG. 4, and FIG. 7B is a side view thereof.

FIG. 8A is an enlarged front view of a portion provided with a regulating means, showing a state in which a holder is raised to an upper limit position, and FIG. 8B is a cross-sectional view taken along line YY of FIG. .

9A is an enlarged front view of a portion provided with a regulating means, and shows a state in which a holder is at a flange holding position, and FIG. 9B is a cross-sectional view taken along line Z-Z of FIG. 9A.

FIG. 10A is an enlarged front view similar to FIGS. 8 and 9 showing another example of the restricting means, showing a state where the holder is raised to an upper limit position, and FIG. 10B is a view showing V in FIG. FIG. 5 is a sectional view taken along line V.

FIG. 11 is an explanatory diagram illustrating a state in which the beam holding frame prevents the beam from tipping over.

FIG. 12 is a front view showing a state in which two adjacent beam holding frames are connected to each other.

FIG. 13 is a front view showing a state where the two beam holding frames are connected to each other.

FIG. 14 is a front view showing a state in which the beam members are attached to the two beam member holding frames according to the embodiment.

FIG. 15 is a front view showing an erroneous use of a holder when two beam holding frames are used by being connected to each other.

FIG. 16 is an explanatory diagram showing a state in which a beam member to which a suspension scaffold is attached is lifted and attached to a pillar member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Beam material made of H-shaped steel 1a Flange of beam material 2 Column material 3 Suspension scaffold 4 Frame for holding beam material 8 Horizontal underframe 9 Leg 10 Holder 11 Vertical rod of holder 12 Locking arm of holder 13 From grooved steel Underframe material 14 Groove of horizontal underframe 15 Support members at both ends of groove 16a, 16b Supporting piece on lower surface side of both ends of groove 19 Holder retaining pin 26 Restriction means 27 Engagement tool for connecting gantry 28 Stopper 30 Projecting rod 31 Rotation preventing piece 31a Opening

Continued on the front page (72) Inventor Kazuo Ban 1-1-1 Mishimae, Takatsuki-shi, Osaka Inside Al Inco Co., Ltd. (72) Inventor Hidenobu Kubo 4-1-1-13 Honcho, Chuo-ku, Osaka-shi, Inc. Takenaka Corporation Osaka Main Store (72) Inventor Tsuyoshi Tsujii F-term (reference) 2E003 EB00 2E174 EA03 in Asahi Kiki Co., Ltd. 3-6-2 Nihonbashi, Chuo-ku, Tokyo

Claims (4)

[Claims] 1. A beam material holding base for holding a beam material horizontally in a horizontal H-shape posture when attaching a required member such as a suspended scaffold to a beam material made of H-section steel. A horizontal underframe to be placed, a leg for fixing the underframe, and a pair of holders that hold the lower flange of the beam material placed on the horizontal underframe from both sides. A vertical rod which penetrates vertically through the frame and is vertically rotatable and rotatably supported by the underframe; and a member which is protruded from the upper end of the vertical rod substantially at a right angle and is engaged with the lower flange of the beam member. Each vertical rod can be tilted only in the inward direction opposite to other vertical frames, and each holder moves horizontally from the flange holding position that holds the lower flange of the beam to the vertical rod center. Regulated so that the beam cannot be held by the holder in the outward position that is turned around A beam holding frame in which a restricting means is interposed between each vertical rod and the horizontal underframe. 2. A restricting means comprising: a projecting rod projecting from a lower end outer peripheral surface of a vertical rod immediately below a locking arm in the same direction as the locking arm;
A rotation protruding piece protruding from a lower portion of the horizontal underframe to prevent the holder from rotating by abutting the tip of the protruding rod a little before the holder is inverted from the flange holding position to the outward position. Item 2. The beam material holding base according to Item 1. 3. The rotation preventing piece has an opening through which the tip of the projecting rod is rotated so that the holder is rotated by 360 ° when the locking arm of the holder is at a certain height or higher from the upper surface of the horizontal frame. The beam holding frame according to claim 2. 4. A locking device for connecting a gantry is provided at one end of the horizontal underframe, and a locked device is provided at the other end of the horizontal underframe so that the connecting device is removably locked. A beam material holding base according to any one of the above.