JPH08184177A - Handrail frame for frame scaffold - Google Patents

Abstract

PURPOSE: To facilitate the fitting and removal of a handrail frame by placing a positioning fitting from the scaffold side onto a horizontal rod, and turning a handrail frame around the positioning fitting so as to fit the fitting to a leg support. CONSTITUTION: A positioning fitting 4 is provided over a fitting 3 of a vertical rod 2, and fixed to the vertical rod 2. In this case, the positioning fitting 4 is projected inside of the scaffold from the vertical rod fitting part in the triangle shape with plane view, and the tip is bent in the longitudinal direction of the handrail. Furthermore, the tip is formed as a horizontal rod locking part to be locked with a horizontal rod 101, of which lower part is formed with a recessed part. For example, the tip of the horizontal rod locking part is formed shorter than 1/4 of the circumference of the cross section of the horizontal rod 101 so as to be locked with the one side surface of the horizontal rod 101. Consequently, the locking parts are positioned at the same position in the cross direction of the frame scaffold, and both the tips thereof are arranged without generating a contact with each other at the most upper part of the cross sectional circle of the horizontal rod 101. At the time of continuously assembling the frame scaffolds, adjacent handrails can be fitted with the similar work.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handrail frame for fall prevention which is attached to a framed scaffold used in a construction site or the like and which is attached to the framed scaffold as it is.

[0002]

2. Description of the Related Art In general, a frame scaffold is erected with two gate-shaped metal building frames opposed to each other, and a scaffold plate (cloth frame) or a horizontal rail is hung horizontally on the upper part thereof, and fixed. Further, one unit of the scaffold formed by extending the brace diagonally is configured to extend upward or in the left-right direction.

When the frame scaffolds are sequentially assembled from the bottom, in order to protect the safety of the worker who rides on the uppermost scaffold, conventionally, ropes and the like are horizontally provided above the uppermost scaffold along the scaffold. It was handed over and the worker was connected to this with a safety belt to ensure safety.

Further, as another conventional frame scaffold, a special H-shaped frame is used instead of the gate-shaped frame of the frame scaffold. There has been known a configuration in which a scaffold plate is hung over, and fitting protrusions are provided on both sides of this height so that a handrail frame can be erected, thereby providing a handrail frame. In such a conventional frame scaffold, the upper end of the H-shaped building frame is fitted to the lower end of the next H-shaped building frame to sequentially form the framed scaffolding upward.

The inventor and the applicant of the present invention filed in Japanese Patent Application No. 2-716
82 and Japanese Utility Model Application No. 2-126172 propose the following handrail frame for a framework scaffold. Practical application flat 2-7
1682, "Grips for holding the pillars of the building frame while providing locking bodies having locking holes that can be engaged and disengaged with the locking projections projecting on the pillars of the building frame on the lower left and right sides of the handrail frame. It is a handrail frame for a framed scaffold, characterized in that metal fittings are provided on the vertical rods of the handrail frame. " In addition, Japanese Utility Model Application No.
"A lock fitting having a hook portion that can be detachably fixed to a horizontal rod that is horizontally fixed to a pillar of a building frame below a vertical rod of a handrail frame, and a grip metal fitting that grips a pillar of the building frame. Are provided at the lower left and right ends of the handrail frame.

Further, the present inventor and the applicant of the present invention have disclosed
-35253, "In the handrail frame of the framework scaffold,
At the lower part of the left and right vertical bars of the handrail frame, there is provided a locking member having a locking portion for detachably locking to the horizontal bar of the building frame, and the locking portion of the locking metal member is inward of the handrail frame from the handrail frame. In addition to being shifted and holding the pillars of the building frame detachably from the outside of the scaffold, the grips are provided at different heights on the lower left and right vertical bars of the handrail frame below the locking metal. Framed scaffolding handrail frame. "

Furthermore, the present inventor and the applicant of the present invention have disclosed in Japanese Utility Model Application No. 3-41824 that "in a handrail frame of a frame scaffold, it is detachably attached to the horizontal rods of the building frame at the lower left and right vertical rods of the handrail frame. By providing locking metal fittings with locking parts, and holding metal fittings for detachably gripping the pedestal of the building frame at different heights under the left and right vertical rods of the handrail frame, the gripping metal can be attached to and detached from the building frame by hand. It proposes "a handrail frame for a framed scaffold, characterized in that a pair of rotatable mounting rods are provided on the upper horizontal rods of the sliding frame".

[0008]

In the above-mentioned assembling of the frame scaffold, a rope or a handrail frame for protection is provided for the safety of the worker who works on the scaffold plate on the top floor. , There were the following problems. In the structure in which the rope is hung, there is a problem in that the rope for hanging the worker must be further hung on the rope, which is troublesome for the worker and the hanging rope hinders the work.

Further, the conventional scaffolding for providing a handrail frame for each floor uses a special H-shaped building frame, and thus has a problem that it cannot be applied to a general framework scaffolding.

[0010] Further, the railing frame of the framework scaffold proposed by the present inventor or the present applicant can be easily attached to a gate-shaped building frame which has been generally used in the past. However, according to the present invention, a solid handrail frame that has a simpler structure, can be easily mounted, and prevents the scaffolding from being rolled after mounting and prevents a moment to prevent moment. The purpose is to gain.

[0011]

[Means for Solving the Problems] In order to achieve this purpose,
The handrail frame of the framework scaffold according to the present invention includes a mounting bracket detachably engaged with a pillar of the building frame, a positioning bracket detachably engaged with a horizontal rod of the building frame, and a mounting bracket detachably mounted on the pillar of the building frame. An upper fixing bracket freely engaging is provided on each of the left and right vertical rails of the handrail frame sequentially from below, and the mounting bracket has a vertical rod mounting portion and a pillar mounting portion, and the pillar mounting portion is from the horizontal direction. A recess engaging portion for engaging the pillar, a locking plate attached to the opening side of the recess engaging portion, the opening side being openable and closable, the leading end bent, and the rear end bent; It has a retaining part on the rear end side of the plate-shaped body and is provided with different heights at the lower part of the left and right vertical rods, the positioning bracket has a vertical rod mounting part and a horizontal rod locking part, and the upper fixing bracket is Connect and fix the vertical rod and the pillar.

Further, the handrail frame of the frame scaffold of the present invention is
A mounting bracket detachably engaging with the pillars of the building frame, a positioning bracket detachably engaging with the horizontal rod of the building frame, and an upper fixing bracket removably engaging with the pillars of the building frame. The railing frame is provided on each of the left and right vertical bars sequentially from below, the mounting bracket has a vertical rod mounting portion and a pillar mounting portion, and the pillar mounting portion has a concave engaging portion that engages the pillar from the horizontal direction. A locking plate which is attached to the opening side of the concave engaging portion and which is openable and closable at the opening side, the leading end is bent and the rear end is bent, and the locking plate is prevented from falling off at the rear end side The positioning metal fitting has a vertical rod mounting part and a horizontal rod locking part, and the upper fixing metal part is a semi-circular concave part abutting on the building frame pillar. And a mounting portion that is attached to the vertical rod so as to be rotatable in a vertical direction.

Further, the handrail frame of the scaffold scaffold of the present invention includes a mounting bracket detachably engaging with a pillar of the construction frame, a positioning bracket detachably engaging with a horizontal rod of the construction frame, and a construction frame. Upper fixing brackets detachably engaged with the pillars of the handrail frame are sequentially provided from below on each of the left and right vertical bars, and the mounting bracket has a vertical rod mounting portion and a pillar mounting portion, The part is a concave engaging part that engages the pillar from the horizontal direction, and a locking plate shape that is attached to the opening side of the concave engaging part, the opening side is openable and closable, the tip is bent and the rear end is bent The body and the locking plate have a retaining portion on the rear end side and are provided with different heights at the lower parts of the left and right vertical rods. The positioning bracket has a vertical rod mounting part and a horizontal rod locking part. The upper fixing bracket is provided with a pillar engaging recess engaging with the building frame pillar and a mounting recess opening in the vertical rod on the opposite side to the pillar engaging recess, and the mounting recess is provided in the mounting recess. Providing a 杆押 pressure body.

[0014]

When assembling a framework scaffold, a handrail frame for protection provided on the side of the scaffold plate for work safety can be easily installed by using a commonly used building frame. The handrail frame is tilted toward the scaffolding side, and the horizontal rod locking portions of the positioning metal fittings on the lower side of the vertical rods on both sides are placed on the horizontal rods of the left and right building frames. By pushing the upper part of the handrail frame to the outside of the scaffold with this horizontal rod locking part as a fulcrum, the mounting metal fittings below the horizontal rod locking part grip the pedestal of the building frame from the outside with the recess engaging part. Further, the opening side of the recess engaging portion is closed by the locking plate, and the pedestal is fixed. The locking plate does not come off due to the bent portion at the tip and the retaining portion.

The upper fixing bracket of the vertical rod is located above the positioning metal fitting and removably engages with the upper part of the pedestal column. The upper part of the handrail frame is fixedly connected to the upper part of the handrail frame. Prevent roll and prevent moment.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a front view of an embodiment of the present invention, FIG. 2 is a plan view of a mounting bracket, FIG. 3 is a front view thereof, FIG. 4 is a plan view of a positioning bracket, and FIG. A description will be given based on FIG. 6 showing a plan view of the upper fixture according to Example 1, FIG. 7 showing a front view thereof, FIG. 8 showing a plan view of the upper fixture according to the second embodiment, and FIG.

The framed scaffold is made of a pair of metal gate-shaped building frames 100 opposed to each other, a scaffold plate (cloth frame) is laid over a horizontal rod 101 on the upper side of the frame 100, and braces are combined diagonally. Configure. The gate-shaped building frame 100 is formed by fixing left and right pillars 102 at the upper ends with a horizontal rod 101. The left and right pillars 102 for fitting with the lower ends of the pillars 102 of the upper building frame 100 when assembling the building frame 100 on the upper side are provided with fitting projections on the upper portions. The left and right pillars 102 of the building frame 100 are provided with two upper and lower brace pins protruding laterally thereof, and form a framework by bridging the braces.

One scaffold is used for the gate-shaped building frame 100.
Is constructed such that two are opposed to each other, and a scaffold plate (cloth frame) is hung over the horizontal rod 101 of the two building frames 100 by grips provided at both ends, and further, the brace is diagonally hung over the brace pins and fixed. I do. The handrail frames 1 are provided on both sides of the scaffold board, and the length is a length corresponding to the length of the scaffold board.

The handrail frame 1 has mounting brackets 3 provided at lower portions of left and right vertical rods 2 at different right and left heights. The mounting bracket 3 is detachable from the pillar 102. Positioning brackets 4 of the same height are respectively located at lower positions of the vertical rods 2 above the mounting brackets 3.
To provide. The positioning fitting 3 is detachably locked to the horizontal rod 101. An upper fixing metal 4 is provided at a position above the vertical rod 2 above the positioning metal 4. The upper fixing bracket 4 is the pedestal 1
02 is detachable.

The mounting bracket 3 is fixed to the vertical rod 2 by welding or the like by a vertical rod mounting portion 31 which is substantially circular in plan view. Due to the difference in height between the left and right mounting brackets 3, the adjacent mounting brackets 3 can grip the pillar 102 of the building frame 100 common to adjacent scaffolds. The mounting bracket 3 opens the recess engaging portion 30 toward the inside of the scaffold so as to grip the pillar 102 from outside the scaffold.

The recessed engaging portion 30 is provided with an insertion side hole 32 and an outlet side hole 33 facing each of the left and right plate-like bodies forming the opening side of the recess, and the locking plate-like body 34 is removably inserted. . The insertion side hole 32 is located on the vertical rod mounting portion 31 side and is near the center of the handrail frame 1. The thickness and width of the insertion side hole 32 are
It is smaller than the thickness and width of the outlet side hole 33. In this embodiment, the insertion side hole 32 has a thickness of 6 mm and a width of 21.5 mm, and the outlet side hole 33 has a thickness of 8 mm and a width of 23 mm. By engaging the pedestal 102 with the recess engaging portion 30 and inserting the locking plate-like body 34, the pedestal 102 and the mounting member 3 are connected and fixed.

The locking plate-like body 34 is an elongated rectangle in a plan view, and the front end 34a is slightly curved or bent.
The rear end side 34b is formed by bending the rear end side 34b substantially at a right angle to the side opposite to the front end side 34a, and the bent portion of the rear end side 34b is used as a hitting portion. In this embodiment, the locking plate-like body 34 has a thickness of 5 mm, a width of 20 mm and a length of 105 mm, and the front end side 34 is bent by a length of 8 mm for 2 mm in the thickness direction.

A wedge groove 35 is formed in the vertical direction on the inner side surface of the scaffold of the vertical rod mounting portion 31 of the mounting bracket 3, and a wedge body 36 having a head projecting about 5 mm from the side surface is detachably caulked in the wedge groove 35. The locking plate-like body 34 is fixed and used as a retaining portion.
After the locking plate-shaped body 34 is inserted into the holes 32 and 33, the wedge body 36 is normally fixed except when the locking plate-shaped body 34 is replaced. The locking plate 34 has a wedge 36 on one side.
By being mounted on the head of, the bent portion of the distal end side 34a cannot be escaped from only the insertion side hole 32. Therefore,
The locking plate-shaped body 34 does not fall off from the mounting member 3.

The left and right positioning brackets 4 are provided above the mounting bracket 3 provided on the vertical rod 2 at the same height, and are fitted and fixed to the vertical rod 2 by a concave vertical rod mounting portion 41. The positioning fitting 4 protrudes from the vertical rod mounting portion 41 in a triangular shape in plan view toward the inside of the scaffold, and has a distal end bent outward in the handrail frame length direction. The distal end portion of the positioning fitting 4 is formed as a horizontal rod locking portion 40 that locks the horizontal rod 101 with the lower portion as a concave portion. The concave portion of the horizontal rod locking portion 40 has a shape such that when the horizontal rod locking portion 40 is locked to the horizontal rod 101, the tip of the horizontal rod locking portion 40 does not contact the uppermost portion of the horizontal rod 101, such as a horizontal rod. The length of the horizontal rod 101 is made shorter than a quarter of the circumference of the section 101 so as to be locked on one side of the horizontal rod 101. Thereby, even if the position of the horizontal rod locking part 40 is the same in the width direction of the framed scaffold and the positioning metal 4 is locked to the same horizontal rod 101, the tips of the adjacent positioning metal 4 are kept together. At the top of the cross-section circle of the horizontal rod 101, a space is left and does not touch each other. Therefore, even when assembling framed scaffolds continuously in the longitudinal direction, the adjacent handrail frames 1 can be attached by the same operation.

The upper fixing bracket 5 is provided detachably on the upper part of the vertical rod 2. The upper fixing bracket 5 is a portion for fixing the upper portion of the vertical rod to the pillar 102 of the building frame 100, and includes an upper fixing bracket 5a according to the first embodiment and an upper fixing bracket 5b according to the second embodiment depending on the shape.

A description will now be given of the upper fixture 5a according to the first embodiment shown in FIGS. The upper fixing member 5a is attached to the vertical rod 2 so as to be vertically rotatable by an attaching portion including a hole 52 and a bolt nut 53. The upper fixture 5a
It has a bottom surface, left and right side surfaces, and has a gutter-like shape with one side surface bent from the middle and the front end slightly wider. The flat shape of the front end is a semicircular recess 50, which engages the column of the pillar 102 from the side. . The rear end also has a semicircular recess 51 in a plan view, and engages with the column of the vertical rod 2 from the side. On the rear side of the left and right side surfaces of the upper fixing metal fitting 5a, elongated holes 52 elongated in the longitudinal direction are provided. The holes 20 formed on the vertical rod 2 are aligned with the elongated holes 52 provided on the left and right sides, and the bolt nut 53 is attached. It is attached to the vertical rod 2 so that it can be inserted and turned freely. The left and right side surfaces are lowered toward the tip, and the tip end contacts the pedestal 102, and the rear part contacts the side surface of the vertical rod 2.

A description will now be given of the upper fixing fitting 5b according to the second embodiment shown in FIGS. The upper fixing bracket 5b has a shape close to a flat S-shape formed by bending a plate-like body. An arc-shaped protruding portion 54a is formed in one of the S-shaped curved concave portions from an intermediate portion of the S-shaped portion.
To form a mounting recess 54. A screw hole is provided in the end side plate-like body in the mounting recess 54, and a thumb screw 55 is detachably screwed. The thumb screw 55 has a splitter 56 detachably provided at the tip. The S-shaped recess on the opposite side of the mounting recess 54 is formed as a pillar engaging recess 57 that engages with the pillar 102 of the building frame 100.

In order to attach the upper fixture 5b, the upper fixture 5b is rotated about the center of the S-shape, and the pillar 102,
Engage with the vertical rod 2. That is, the pillar engaging recess 57 is engaged with the pillar 102, the vertical rod 2 is engaged with the mounting recess 54,
Next, the vertical rod 2 is pressed and fixed by screwing in the thumb screw 55.

In order to erect the handrail frame 1 on the framed scaffold, a scaffold plate is laid across the standing frame 100, and a brace is provided on a brace pin of the pillar 102 to provide one unit of scaffold. Configure. The operator stands on the scaffold and places the horizontal rod locking portions 40 of the left and right positioning fittings 4 on the horizontal rod 101 while slightly lowering the handrail frame 1 toward the inside of the scaffold. At this time, in the mounting bracket 3 of the handrail frame 1, the locking plate-like body 34 is removed from the insertion side hole 32 and the outlet side hole 33, and the opening side of the recess engaging portion 30 is left open. Then, by pushing the upper part of the handrail frame 1 outward, the opening side of the mounting bracket 3 naturally engages with the pillar 102 of the building frame 100 from outside the scaffold.

Next, in a state where the pillar 102 is engaged with the recess engagement portion 30, the locking plate 34 is inserted into the outlet side hole 33 from the insertion side hole 32 by hitting it with a metal plate or the like. . Locking plate 3
4 is inserted from the tip end side 34a and is inserted into the outlet side hole 33 while pressing or abutting the pedestal 102 on one surface of the plate-shaped body. This insertion is possible because the sizes of the insertion side hole 32 and the outlet side hole 33 are different, and when the locking plate-like body 34 is inserted into both holes 32, 33, the side surface of the pedestal 102 and three points Are brought into contact with each other, and it is possible to absorb a backlash or the like due to the spring effect and friction of the plate-shaped body. Since one surface of the locking plate-like body 34 is placed on the head of the wedge body 36, the bent portion of the distal end side 34a becomes equal to or larger than the thickness of the insertion-side hole 32, and cannot be escaped from the insertion-side hole 32. Therefore, the locking plate 34 does not fall out of the mounting bracket 3.

Next, the vertical bar 2 of the handrail frame 1 and the pillar 102 of the building frame 100 are connected and fixed by the upper fixing bracket 5.

The upper fixing member 5a of the first embodiment is attached to the vertical rod 2 by a bolt nut 53 so as to be vertically rotatable. Loosen the bolts and nuts 53, orient the upper fixing metal fitting 5a located upward, and adjust the position of the concave portion 50 at the tip end by the long hole 52 to adjust the position of the pedestal 10.
Then, the bolt nut 53 is tightened and fixed.

The upper fixture 5b of the second embodiment is rotated about the center of the S-shape as a center point so that the S-shaped recesses
And the vertical rod 2. That is, the pillar engaging recess 57
Is engaged with the pedestal 102, and the vertical rod 2 is engaged with the mounting recess 54. Then, by inserting the thumbscrew 55, the vertical rod 2 is pressed and fixed by the tip of the thumbscrew 55. Furthermore, since the split pin 56 is attached to the tip of the thumb screw 55, the thumb screw 55 does not fall out of the upper fixing bracket 5b.

[0034]

Therefore, according to the present invention, when assembling a framed scaffold, a handrail frame for protecting a worker from falling down from the scaffold plate can be used for a commonly used building frame. Moreover, there is an effect that it can be attached and detached very easily.

Further, an operator stands on the handrail frame on the scaffold plate, places the positioning bracket on the horizontal rod from the scaffold side, rotates the handrail frame outward with the positioning bracket as a fulcrum, and moves the mounting bracket to the pillar. It can be fitted with a very small number of people. In addition, there is an effect that removal can be performed very easily by performing the reverse operation.

Further, since the upper fixing fitting is provided on the upper part of the vertical rod of the handrail frame, there is an effect that the handrail frame can be prevented from rolling and moment can be prevented. Therefore, since the handrail frame is firmly and stably assembled, there is an effect that work safety is enhanced.

[Brief description of drawings]

FIG. 1 is a front view of a handrail frame according to an embodiment of the present invention;

FIG. 2 is a plan view of the mounting bracket,

FIG. 3 is a front view,

FIG. 4 is a plan view of a positioning bracket,

FIG. 5 is a front view of the same.

FIG. 6 is a plan view of an upper fixture according to the first embodiment;

[Figure 7] Similarly, front view

FIG. 8 is a plan view of the upper fixing bracket of the second embodiment,

FIG. 9 is a front view of the same.

[Explanation of symbols]

 100 building frame 101 horizontal rod 102 pedestal 1 handrail frame 2 vertical rod 20 hole 3 mounting bracket 30 recess engagement portion 31 vertical rod mounting portion 32 insertion side hole 33 outlet side hole 34 locking plate body 35 wedge groove 36 wedge Body 4 Positioning bracket 40 Horizontal rod locking part 41 Vertical rod mounting part 5, 5a, 5b Upper fixing bracket 50 Tip recess 51 Rear end recess 52 Long hole 53 Bolt nut 54 Mounting recess 55 Thumb screw 56 Split pin 57 Pillar engagement Recess

Claims (3)

[Claims] 1. A handrail frame of a framed scaffold, a mounting bracket detachably engaging with a pillar of a construction frame, a positioning bracket detachably engaging with a horizontal rod of the construction frame, and a pillar of the construction frame. An upper fixing bracket detachably engaged with the handrail frame is sequentially provided from below on each of the left and right vertical bars, the mounting bracket has a vertical rod mounting portion and a pillar mounting portion, and the pillar mounting portion is horizontal. A concave engaging portion that engages the pillar from the direction, a locking plate-like body that is attached to the opening side of the concave engaging portion, the opening side can be freely opened and closed, and the front end is bent and the rear end is bent, It has a retaining portion on the rear end side of the locking plate and has different heights at the lower left and right vertical rods,
A handrail frame for a scaffolding scaffold, wherein the positioning bracket has a vertical rod mounting portion and a horizontal rod locking portion, and the upper fixing bracket detachably connects the vertical rod and the pillar. 2. A handrail frame of a framed scaffold, a mounting bracket detachably engaging with a pillar of the building frame, a positioning bracket detachably engaging with a horizontal rod of the building frame, and a pillar of the building frame. An upper fixing bracket detachably engaged with the handrail frame is sequentially provided from below on each of the left and right vertical bars, the mounting bracket has a vertical rod mounting portion and a pillar mounting portion, and the pillar mounting portion is horizontal. A concave engaging portion that engages the pillar from the direction, a locking plate-like body that is attached to the opening side of the concave engaging portion, the opening side can be freely opened and closed, and the front end is bent and the rear end is bent, It has a retaining portion on the rear end side of the locking plate and has different heights at the lower left and right vertical rods,
The positioning metal fitting has a vertical rod mounting portion and a horizontal rod locking portion, and the upper fixing metal fitting has a semicircular concave portion that abuts the building frame pedestal and a mounting portion that is vertically rotatably mounted on the vertical rod. Handrail frame of frame scaffold characterized by that. 3. A handrail frame of a framed scaffold, a mounting bracket detachably engaging with a pillar of the building frame, a positioning bracket detachably engaging with a horizontal rod of the building frame, and a pillar of the building frame. An upper fixing bracket detachably engaged with the handrail frame is sequentially provided from below on each of the left and right vertical bars, the mounting bracket has a vertical rod mounting portion and a pillar mounting portion, and the pillar mounting portion is horizontal. A concave engaging portion that engages the pillar from the direction, a locking plate-like body that is attached to the opening side of the concave engaging portion, the opening side can be freely opened and closed, and the front end is bent and the rear end is bent, It has a retaining portion on the rear end side of the locking plate and has different heights at the lower left and right vertical rods,
The positioning metal fitting has a vertical rod mounting portion and a horizontal rod locking portion, and the upper fixing metal fitting has a pedestal engaging concave portion engaging with a building frame pedestal and a vertical rod opening to the side opposite to the pedestal engaging concave portion. A handrail frame for a framed scaffold, characterized in that a mounting rod is provided with a vertical rod pressing body.