JP3251916B2 - Stand for holding beam material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a beam holding member used for holding a hanging scaffold to a beam made of H-section steel in an H-shaped posture with a substantially horizontal cross section. Regarding the gantry.

[0002]

2. Description of the Related Art In the construction of a high-rise building having a steel frame structure, as shown in FIG. 8, when a beam 1 is mounted between adjacent column members 2 as shown in FIG. It is hung up and attached to the pillars 2 and 2,
In this case, a method is used in which the suspended scaffold 3 is attached to the beam 1 in advance on the ground, and the beam 1 is directly lifted and attached to the pillars 2, 2 as shown in the figure. The suspension scaffold 3 is a scaffold for performing various operations along the beam member 1, but not may be attached to the beam member 1 after attaching the beam member 1 to Hashirazai 2, the mounting 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 performed at a high place and involves a great danger. 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 . Beam members holding frame of traditional is made of both sides a pair of leg members for fixing the horizontal member and which at both ends, the two beam members holding frame placed at a predetermined interval, their The beam is placed on the horizontal member in an H-shape with a substantially horizontal cross section, and the beam is held and fixed on the horizontal member 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. Accordingly, 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.

[0005]

The invention according to claim 1 is
A beam holding frame 4 for holding the beam 1 horizontally in an H-shaped posture with a substantially horizontal cross-section when the hanging scaffold 3 is attached to the beam 1 made of H-section steel. A horizontal underframe 8 to be placed, a leg 9 for fixing the horizontal underframe 8 to a required height, and a pair of lower flanges 1a of the beam 1 placed on the horizontal underframe 8 from both sides. Each of the holders 10 vertically penetrates the horizontal underframe 8 and is vertically movable and rotatably supported by the underframe 8, and an upper end of the vertical bar 11. And a locking arm 12 which is provided to protrude laterally and is locked to the lower flange 1a of the beam material 1.

According to a second aspect of the present invention, in the beam holding frame according to the first aspect, each of the holders has a locking arm.
The retainer retaining pin 19 is attached to the lower end of the vertical rod 11 protruding from the lower surface of the horizontal underframe 8 in a state where the pin is locked to the lower flange 1 a of the beam 1.

According to a third aspect of the present invention, there is provided the beam holding frame according to the first or second aspect, wherein the horizontal underframe is provided with the locking arm.
A vertically extending groove 14 through which the holders 10, 10 can be inserted and removed is formed in a state in which the two holders 2, 12 project inward from each other, and the back of the vertical rod 11 abuts on both ends of the groove 14. Each possible support member 15 is provided and this groove 1
On the lower surface of both ends of the vertical rod 4, the back of the vertical rod 11 is
Each of the holders 10 is provided with an upper end of the vertical rod 11 and a locking arm 12 formed in the groove 14.
It is characterized in that it can be immersed inside and is prevented from falling down by the support piece 16 at this immersion position.

[0008]

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 is attached to the beam 1, and FIG. 2B is an end view thereof. FIG. 2A is a cross-sectional view taken along the line XX of FIG. 1A, showing a state where the hanging scaffold 3 is attached to the beam 1,
FIG. 2B is an enlarged view showing a mounting portion of the suspension scaffold 3 mounted on the beam 1.

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. Incidentally, the beam member 1 has a U Ebb 1b, the flange 1a of the upper and lower end portions of the U Ebb 1b, and made of a 1a.

FIG. 3A is a plan view of a beam holding frame 4 according to the present invention, FIG. 3B is a front view, and FIG. 4 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 1 for holding the lower flange 1a of the beam 1 made of the H-shaped member placed on the horizontal underframe 8 from both sides.
Each holder 10 comprises a vertical rod 11 which penetrates vertically through the horizontal underframe 8 and is vertically rotatable and rotatably supported by the underframe 8, and an upper end of the vertical rod 11. And a locking arm 12 which is laterally projected and is locked to the lower flange 1a of the beam 1. Each locking arm 12 is reinforced by a reinforcing piece 17 interposed between the arm 11 and the vertical rod 11.

The horizontal underframe 8 comprises a pair of underframe members 13, 13 each made of a channel steel, which are arranged back to back at regular intervals so that their groove openings face outward. Between the back surfaces of the frame members 13, 13, both locking arms 12, 1 are provided.
A vertically extending groove 14 through which both holders 10, 10 can be inserted and removed in a state in which the two protrude from each other is formed. At both ends of the groove 14, H to which the back of the vertical rod 11 can abut.
A support member 15 made of a profile is provided, and a groove 14 is provided.
On the lower surface of both ends of the vertical rod 11, the back of the vertical rod 11 is
A plate-like supporting member 16 for supporting the front lower end of the vertical rod 11 in a state in which the vertical rod 11 can move up and down is provided, and each holder 10 is provided at the upper end of the vertical rod 11. The portion, the locking arm 12 and the reinforcing piece 17 can be immersed in the groove 14, and at this immersed position, the supporting piece 16 is prevented from falling down (see FIG. 6). .

In each holder, a locking arm 12 is provided with a beam 1.
A pin hole 18 is provided at the lower end of the vertical rod 11 projecting from the lower surface of the horizontal underframe 8 in a state of being locked to the lower flange 1a, and a holder retaining pin 19 is attached to the pin hole 18. The pin 19 is attached to the tip of a chain 21 connected to a bolt 20 fixed to the vertical rod 11 (see FIGS. 5 to 7). The vertical rod 11 of each holder 10 is formed of a round steel pipe, and the locking arm 12 is formed of a square steel pipe.

A leg 9 for fixing the horizontal underframe 8 at a required height includes a pair of diagonal members 22, 22 arranged in a substantially C-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. The underframe 13 made of a channel member is provided with reinforcing pieces 13a at required intervals in the groove opening.

The beam holding frame 4 constructed as described above.
The method of using will be described with reference to FIGS.

When the beam holding frame 4 is not used,
As shown in FIG. 6, the holder retaining pin 19 is removed from the vertical rod 11 of each holder 10 and each locking arm 12 is removed.
Are rotated in the directions that project in the opposite direction,
The upper end of the vertical rod 11, the locking arm 12 and the reinforcing piece 17 of each holder 1 are immersed in the groove 14 of the horizontal frame 8. At this time, the locking arm 12 of each holder 10 is supported by the support piece 16 as shown. By immersing each holder 10 in the groove 14 in this manner, there is no protrusion on the upper surface of the horizontal underframe 8, so that the horizontal underframe 8 can be used as a step board or the like, and The appearance and appearance also improve.

When using the beam holding frame 4 to attach the hanging scaffold 3 to the beam 1, each holder 10 is lifted from the state shown in FIG. 6 so that the locking arms 12 face outward. The holding arm 12 of each holder 10 is placed on the upper end of the support member 15 as shown in FIG.

Then, as shown in FIG. 6, the beam member 1 is placed on the horizontal underframe 8 between the holders 10, 10 in a substantially horizontal H-shaped posture, and each holder 10 is lifted. By inverting the locking arms 12 to project in opposite directions, each locking arm 12 is locked to the lower flange 1a of the beam 1 as shown in FIG.
Thereby, the beam member 1 is held and fixed in a horizontal H-shaped posture. Thereafter, in order to further ensure safety, a holder retaining pin 19 is inserted into the pin hole 18 of the vertical rod 11 of each holder 10 as shown in FIG. finish.

After the beam 1 is held and fixed in a substantially horizontal cross-sectional H-shape by the pair of beam holders 4 and 4 on both sides as described above, the beam 1 is suspended by the method already described. By attaching the scaffold 3, a state as shown in FIG.

When the suspension scaffold 3 is attached to the beam 1 in the state shown in FIG. 1A, the holder retaining pins 19 of each holder 10 are pulled out, and each holder 10 is lifted and turned upside down. In this state, the beam 1 is lifted by a crane and attached to the columns 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 and inverting each holder 10. As a result, the work efficiency can be greatly improved as compared with the conventional beam material holding base.

FIG. 5 illustrates a state in which the beam 1 is prevented from tipping over by the beam holding frame 4 described above. In each holder 10, the back of the vertical rod 11 is supported by a support member 15.
And the lower end of the front side of the vertical rod 11 is supported by the supporting piece 16, so that the beam 1 falls counterclockwise (or clockwise) as shown in the figure. In the case where there is no holder retaining pin 19, although the vertical rod 11 of each holder 10 slightly rubs along the support member 15, the contact state with the support member 15 can be maintained, It does not incline inward, so that the beam 1 can be prevented from tipping over. In addition, when the holder retaining pin 19 is inserted into the vertical rod 11, the above-mentioned rubbing hardly occurs, and the falling down of the beam 1 can be prevented more reliably and the vertical rod 11 can be prevented from coming off. And further safety can be expected.

[0022]

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 of the holders vertically penetrates the horizontal underframe and is vertically rotatable and rotatably supported by the underframe. It consists of a locking arm that is locked to the flange, and in use, it is possible to quickly and easily hold and fix the beam material in a predetermined posture with a simple operation of lifting and inverting each holder. As a result, the work efficiency can be greatly improved as compared with the conventional beam holding frame using a U-shaped clamp or a vise.

According to the second aspect of the present invention, the holder can be attached to the lower end of the vertical rod in a state where the locking arm is engaged with the lower flange of the beam, so that the holder is unexpectedly moved. It can be prevented from slipping out, and further safety can be expected.

According to a third aspect of the present invention, a vertically penetrating groove through which both holders can be inserted and detached is formed in the horizontal underframe, and a supporting member which can contact the back of the vertical rod at both ends of the groove. In addition to the above, a support piece is provided on the lower surface of both ends of the groove to support the front lower end of the vertical rod in a state where the rear part of the vertical rod is in contact with the support member so as to be vertically movable. If the upper end of the vertical rod of the holder and the locking arm are immersed in the groove, and the lower portion is prevented from falling out by the support piece at this immersion position, the upper end of the vertical rod of each holder is not used when not in use. By immersing the part and the locking arm in the groove,
Since there are no protrusions on the upper surface of the horizontal underframe, the horizontal underframe can be used as a stepping board or the like, and appearance and appearance are improved.

[Brief description of the drawings]

FIG. 1 (A) shows a state in which a beam is horizontally held by a pair of beam holding frames on both sides according to the present invention in a substantially horizontal cross-sectional H-shape, and a hanging scaffold is attached to the beam. FIG. 2B is a side view showing a state in which the state is shown, and FIG.

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. 3A is a plan view of a beam material holding base according to the present invention, and FIG. 3B is a front view.

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

FIG. 5 is an explanatory diagram illustrating a state in which the beam material holding base prevents the beam material from overturning.

FIG. 6 is an explanatory view for explaining a method of using the beam holding frame according to the present invention.

FIGS. 7A to 7C are explanatory diagrams illustrating how to use the beam material holding base following FIG. 6;

FIG. 8 is an explanatory diagram illustrating a state in which a beam member to which a hanging 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 member at both ends of groove 16 Support piece on lower surface side of both ends of groove 19 Holder retaining pin

Claims (3)

(57) [Claims] 1. A beam material holding base for holding a suspended scaffold to a beam material made of H-section steel in an H-shaped posture with a substantially horizontal cross section when mounting the hanging scaffold, wherein the beam material is mounted. A horizontal underframe to be placed, a leg for fixing the horizontal underframe to a required height, and a pair of holders for holding a lower flange of a beam material placed on the horizontal underframe from both sides. The holder vertically penetrates the horizontal underframe and is vertically rotatable and rotatably supported by the underframe. The holder is laterally protruded from an upper end of the vertical bar, and is engaged with a lower flange of the beam member. A beam holding base consisting of a locking arm to be stopped. 2. A holder retaining pin is attached to each holder at a lower end of a vertical rod protruding from a lower surface of a horizontal underframe in a state where a locking arm is locked to a lower flange of a beam member. The gantry for holding a beam material according to claim 1. 3. A horizontal underframe is formed with a vertically penetrating groove through which both holders can be inserted and removed with the locking arms protruding inward and facing each other. Support members are provided, each of which is capable of abutting the back portion, and the lower end portion of the front end of the vertical rod is provided on the lower surface of both ends of the groove in a state in which the rear portion of the vertical rod abuts the support member so as to be vertically movable. Each holder is provided so that the upper end of the vertical rod and the locking arm can be immersed in the groove, and in this immersion position, the support piece is prevented from falling down by the support piece. The gantry for holding a beam material according to claim 1, wherein the gantry is provided.