JP4070657B2 - Handrail for frame scaffolding - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a handrail attached between adjacent building frames in a frame scaffold installed in a construction site or the like.
[0002]
[Prior art]
Conventionally, in order to build a scaffold for work around a construction site, etc., a plurality of building frames are arranged side by side, and a scaffolding plate is installed between each building frame. Scaffolding is installed. In addition, although the bracing serves as a handrail for an operator who works on the scaffolding board, it is desired to install a dedicated handrail separately in order to improve safety.
[0003]
When prior art documents were examined, Japanese Utility Model Publication No. 4-50352 was searched. In Japanese Utility Model Publication No. 4-50352, a bracket attached to a bracing pin at the top of a building frame is fastened and fixed with a fixing screw at the center height position of the pedestal, and a handrail material is attached to the lock pin fixed to the bracket. One handrail is installed at a substantially central height position of the building frame.
[0004]
[Problems to be solved by the invention]
However, in the above-mentioned conventional handrail device, only one handrail is installed at the approximate center height position of the building frame, and considering the safety, it is recommended that another handrail be installed below. However, the bracket that hangs the handrail is hung on the brace pin at the top of the building frame, and the lower end of the bracket reaches only the center height of the building frame. Since it cannot be attached to the lower position, another device is desired for safety.
[0005]
In view of the above points, an object of the present invention is to provide a handrail for a framed scaffold that is safe and can be easily installed.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a handrail for a framework scaffold according to the present invention is detachable between a handrail support that is detachably attached to a pedestal of a building frame and the handrail support that is attached to the building frame. In a frame scaffolding handrail comprising a handrail material to be handed over, the handrail support has a support body of a predetermined length, and a lock pin for removably attaching the handrail material is fixed to the support body at a predetermined position. In addition, at the upper end of the support body, one end of a substantially U-shaped sandwiching body that sandwiches the pedestal of the building frame is turned around a fulcrum so that the pedestal can be sandwiched and released, and the sandwiching body is in the sandwiched position. When the hand is rotated and released, the holding end is provided with a holding bracket formed so that the free end of the holding body is locked by the restoring force of the spring body and the holding state is maintained. A pin hole that can be inserted into a brace pin at the bottom of the frame is formed.
[0007]
Further, the position of the lock pin fixed to the support is characterized by being fixed at a position of about 900 mm and about 450 mm from the work scaffold when the handrail support is attached to the building frame.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
According to the frame scaffolding handrail of the present invention, the handrail support for handrails has an elongated plate-like support body, and the upper end portion of the support body is provided with a holding metal fitting for holding the pedestal of the building frame. In the lower part of the support, a pin hole that can be fitted into the bracing pin at the lower part of the building frame is formed. Then, when attaching the handrail support to the building frame, the handrail support is positioned and supported by fitting the pin holes of the support to the brace pins below the pedestals of the building frame. Next, the pedestal of the building frame is clamped by the clamps at the upper end of the support, and fixed in a state along the pedestal. And a handrail is spanned between adjacent building frames by fitting and attaching the pin hole of a handrail material edge part to the lock pin fixed to the predetermined position of the support body.
[0010]
When the handrail support is attached to the building frame, the handrail support will be attached from the position of the brace pin at the bottom of the building frame to the approximate center height of the building frame. The wearing lock pin can be arranged from the work scaffold, for example, so that the waist height of the worker is approximately 900 mm and the middle portion thereof is approximately 450 mm high. By the way, the bracing pin at the bottom of the building frame is about 230 to 330 mm from the bottom of the building frame, and if the length of the handrail support is about 700 mm, the handrail material is about 900 mm and 450 mm from the worker's scaffold. Two handrails can be installed at a preferred height position, so that the worker can feel safe without falling and can work safely.
[0011]
According to the frame scaffolding handrail of the present invention, the sandwiching bracket at the upper end of the scaffold support is provided with a substantially U-shaped sandwiching body that can be pivoted and released by the pillars of the building frame. The holding body is rotated to a position where the holding body is clamped to the pedestal of the building frame, and if the hand is released, the free end portion of the clamping body is locked to the locking means by the restoring force of the spring body and the clamping state is maintained. Thus, the scaffold support can be fixed with a simple operation, and the work at a high place can be performed quickly and easily.
[0012]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0013]
FIG. 1 is a view showing a state in which a frame scaffolding handrail 1 according to the present invention is attached between adjacent building frames A of the frame scaffolding, and the frame scaffolding handrail 1 is attached to the inner side surface of a pedestal B of the building frame A. An attached handrail support 2 and a handrail material 3 spanned between adjacent handrail supports 2 are configured. In the figure, C is a brace attached to a brace pin D disposed above and below the pedestal B, and E is a scaffold plate spanned between horizontal members F connecting the upper ends of the pedestal B. , G is a stiffener for reinforcing the gate-shaped building frame A.
[0014]
The handrail support 2 has an elongated plate-like support 4, and a lock pin 5 for detachably attaching the handrail material 3 is appropriately disposed and fixed to the support 4. When the handrail support 2 is attached to the building frame A, the lock pin 5 is fixed at a position where the height position from the scaffold plate E becomes, for example, about 900 mm and 450 mm. When it does, it will be in a desirable state on work safety.
[0015]
The upper end of the support 4 is provided with a clamp 6 for holding the pedestal B of the building frame A, and a pin hole 7 which can be inserted into the brace pin D at the lower part of the building A is formed at the lower part of the support 4. Has been established. It is preferable that a plurality of the pin holes 7 be formed in the vertical direction so that the position of the bracing pin D can be changed depending on the standard of each building frame manufacturer. Moreover, it is good to make it the shape which avoids by curving so that the intermediate part vicinity of the support body 4 may not contact | abut the stiffener G of the building frame A at the time of building frame attachment.
[0016]
The holding metal fitting 6 of the handrail support tool 2 includes a substantially U-shaped holding body 8 for holding the pedestal B of the building frame A, and a pivoting portion 8a formed by bending one end of the holding body 8 downward. The support cylinder 9 is pierced downward while being urged downward via the spring body 11, and the free end portion of the holding body 8 is also bent downward to form a locking portion 8b. By rotating 8 to the clamping position and releasing the hand, the locking portion 8b of the clamping body 8 is fitted into the locking cylinder 10 by the restoring force of the spring body 11 so that the clamping state can be maintained. Yes.
[0017]
Then, when the clamping metal fitting 6 is clamped, as shown in FIG. 4, the support body 4 is placed along the pedestal B of the building frame A (FIG. 4A), and the clamping body 8 is moved in that state. After grasping and pulling up against the spring body 11 (FIG. 4 (b)), the holding body 8 is pivoted about the locking portion 8a to hold the pedestal B, and the free end is locked. The part 8b is made to face above the locking cylinder 10 (FIG. 4C). Then, when the hand is released from the holding body 8, the holding body 8 is pulled back downward by the restoring force of the spring body 11, and accordingly, the locking portion 8b of the free end is fitted into the locking cylinder 10. It is inserted and fixed (FIG. 4D). Further, when releasing the pinching, the fixing can be released by operating in the reverse procedure to the above operation.
[0018]
As described above, the clamp metal fitting 6 is configured to make it easy to clamp and release the pedestal by grasping the clamp body 8 by hand and turning the pivoting portion 8a around the fulcrum. In addition to the above-described embodiment, the holding metal fitting 6 may employ a known holding means that is fixed by a bolt such as a clamp.
[0019]
Thus, when attaching the above-mentioned frame scaffolding handrail 1, after attaching the brace C between the brace pins D of the adjacent building frame A, the handrail support 2 is first attached. Procedure for mounting the handrail support 2, first the brace pin D of the lower pillar B together any of the support 4 the lower portion of the pin hole 7 is fitted to position and support of the support 4. Next, when the holding body 8 of the holding metal 6 at the upper end of the support body 5 is grasped and pulled up and rotated against the spring body 11, the pedestal B of the building frame A is held by the holding body 8. When the hand is released, the locking portion 8b of the holding body 8 is fitted into the locking cylinder 10 by the restoring force of the spring body 11, and the holding state is maintained.
[0020]
Then, when the handrail support 2 is attached to each of the adjacent building frames A, the pin holes at both ends of the handrail material 3 are fitted into the lock pins 5 of the respective handrail support 2. When the two handrail members 3 are hung over the upper and lower lock pins 5 of the adjacent handrail support 2, horizontal handrails are created at heights of about 900 mm and 450 mm from the work scaffold.
[0021]
Thus, the handrail support 2 is attached from the vicinity of the bracing pin D below the building frame A to the vicinity of the substantially central height, and the lock pin 5 for attaching the handrail material 3 can be attached to this range. Therefore, the handrail material 3 can be installed at a preferred height position of about 900 mm and 450 mm from the work scaffold, thereby eliminating the anxiety about the operator's crash and performing the work safely.
[0022]
【The invention's effect】
As described above, according to the handrail for a framework scaffold according to the present invention, the handrail support that is detachably attached to the pedestal of the building frame and the handrail support that is attached to the building frame are detachably suspended. In the frame scaffolding handrail composed of a handrail material, the handrail support has a support body of a predetermined length, and a lock pin for detachably attaching the handrail material is fixed to the support body at a predetermined position. , At the upper end of the support body, one end of a substantially U-shaped sandwiching body that sandwiches the pedestal of the building frame is pivoted about a fulcrum so that the pedestal can be sandwiched and released, and the sandwiching body is pivoted to the clamping position. When the hand is released, the holding end is provided with a holding bracket formed so that the free end portion of the holding body is locked by the restoring force of the spring body and the holding state is maintained . Since the pin hole that can be inserted into the lower brace pin is drilled, the handrail supporter is located in the middle of the brace pin below the building frame. Is mounted over the range extending around the locking pin to attach the handrail material also be installed from handrail material work scaffolding becomes attachable to the range to a preferred height, you can build a secure handrail. In addition, the scaffold support can be attached to and removed from the pedestal of the building frame with a simple operation, and installation work at a high place can be performed quickly and easily.
[0023]
In addition, if the position of the lock pin fixed to the support is fixed to a position that is about 900 mm and about 450 mm from the work scaffold when the handrail support is attached to the building frame, it is at a preferred height position. A handrail is installed so that the operator can feel safe without being anxious and can work safely.
[Brief description of the drawings]
FIG. 1 is a partially cutaway front view showing a state in which a handrail for a frame scaffold according to the present invention is attached to a frame scaffold.
FIG. 2 is an enlarged view of a main part of FIG.
3 is a partially omitted cross-sectional view taken along line XX of FIG.
FIG. 4 is a diagram illustrating a procedure for clamping a building frame to a pedestal by a scaffolding fixture clamping body.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Handrail for frame scaffolding 2 ... Handrail support tool 3 ... Handrail material 4 ... Support body 5 ... Lock pin 6 ... Clamping metal fitting 7 ... Pin hole 8 ... Clamping body 8a ... Clamping part 8b ... Clamping of clamping body Part 9 ... Supporting cylinder 10 ... Locking cylinder 11 ... Spring body A ... Building frame B ... Pillar C ... Bracing E ... Scaffolding plate F ... Horizontal member G ... Stiffener

Claims (2)

In a handrail for a frame scaffolding comprising a handrail support that is detachably attached to a pedestal of a building frame, and a handrail material that is detachably suspended between the handrail support attached to the building frame, the handrail support is It has a support body of a predetermined length, and a lock pin for detachably attaching the handrail material is fixed to the support body at a predetermined position, and a pedestal of a building frame is sandwiched at the upper end portion of the support body Rotating one end of the substantially U-shaped sandwiching body around the fulcrum to make the pedestal clampable and releasable, rotate the sandwiching body to the clamping position and release the hand to restore the clamping body with the restoring force of the spring body It is provided with a clamp that is formed so that the free end is locked and the clamped state is maintained, and a pin hole that can be fitted into a brace pin at the bottom of the building frame is formed in the lower part of the support. A handrail for a framed scaffolding.   The position of the lock pin fixed to the support is fixed at a position that is approximately 900 mm and approximately 450 mm from the work scaffold when the handrail support is attached to the building frame. Handrail for the framework scaffold described.

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