JP4162549B2 - Handrail for frame scaffolding of H-shaped building frame - Google Patents

Description

  The present invention relates to a frame scaffolding handrail attached to a frame scaffolding installed along an outer wall of a building in a construction site such as civil engineering and architecture, and more particularly, an H-shaped building frame attached to a frame scaffolding composed of an H-shaped building frame. It is related with the handrail for frame scaffolding.

  Conventionally, a torii-shaped building frame is well known as a building frame for a frame scaffold. Recently, however, an H-shaped building frame that is substantially H-shaped by joining the vicinity of the center of the pedestal with a horizontal member. It is often used, and when building a frame scaffold using this H-shaped building frame, the scaffolding plate is spanned between the horizontal members at the center height position of each adjacent building frame, and this scaffolding plate is used as a boundary. The brace is attached to each of the vertical positions. Therefore, even when the framework scaffold is being assembled or disassembled, the upper part of the pillars of the H-shaped building frame always protrudes around the scaffolding plate on the top floor of the framework scaffold. If a brace or handrail material is attached to the pedestal at least, the handrail can be installed quickly and easily, and the safety of the work on the uppermost floor part of the frame scaffold with danger can be ensured at an early stage.

  However, even if a handrail is installed on or removed from the top floor part of the frame scaffolding as described above by adopting an H-shaped building frame, these operations are performed without a handrail in the surroundings. Therefore, it was impossible to say that there was no problem in work safety.

Therefore, in order to eliminate such a risk, in Patent Document 1, the both ends of the handrail are provided with pin holes that can be locked to the bracing pins of the H-shaped building frame, and the pin holes are not released from releasing the pins. There is described a handrail that has an enlarged hole portion that can be inserted into the open hole and that opens the lower end portion of the enlarged hole portion. In this handrail, first, an enlarged portion of a pin hole of the handrail is fitted into a bracing pin of an H-shaped building frame, and the handrail is slid sideways and temporarily fixed. Therefore, if this handrail is adopted, the worker will not go up on the dangerous top floor scaffolding board, but will stay on the safest one-stage scaffolding board with handrails around it and move around the top floor scaffolding board. It can be said that it is a handrail that can be easily preceded by a handrail and can be expected to have a work safety with respect to the frame scaffold of the H-shaped frame.
Japanese Patent Laid-Open No. 11-324305

  However, since the pin hole of the handrail is an enlarged hole part and the lower part is open, it is easy to attach and detach the H-shaped building frame to the brace pin, but there is a risk of insufficient fixing force at the time of attachment. .

  In view of the above points, the present invention provides a handrail for a framed scaffolding of an H-shaped building frame in which handrails can be installed or removed from the lower scaffolding plate and around the upper scaffolding plate, and can be firmly fixed and secured. It is an issue to provide.

In order to solve the above problems, in the handrail for the frame scaffolding of the H-shaped building frame of the present invention, the H-shaped frame adjacent to the frame scaffolding that is assembled by arranging a desired number of H-shaped building frames in the upward and horizontal directions. A handrail hung between the pillars of the building frame, comprising a horizontal member and a pair of diagonal members pivotally supported in the vicinity of both ends of the horizontal member, and at both ends of the horizontal member A mounting piece having a through hole slightly larger than the outer diameter of the collar body is attached so that it can be inserted into the collar body of the connecting joint fitted to the upper end of the pillar of the H-shaped building frame, The free end portion of the diagonal member is provided with a pin hole to be inserted into a brace pin projecting on the side surface of the opposite pedestal, and when the horizontal material mounting piece is inserted into the collar body of the connecting joint, the collar Rotate the locking part of the lock pin provided on the body downward to keep it unlocked. In addition, the inserted piece of the horizontal member is hooked and locked on the upper surface of the horizontal bar body of the lock pin, and when the upper H-shaped building frame is connected to the upper part of the connecting joint, it is inserted into the collar body. With the mounting piece of the horizontal member locked on the top surface of the horizontal bar body of the lock pin, the pedestal of the upper H-shaped building frame is fitted into the connecting joint, and then the lock pin locking part is directed upward And is configured to be in a locked state while sandwiching the mounting piece of the horizontal member .

According to the handrail for the framework scaffolding of the H-shaped building frame according to the present invention, the handrail is composed of a horizontal member and a pair of diagonal members pivotally supported near both ends of the horizontal member, and the horizontal Mounting pieces having through-holes slightly larger than the outer diameter of the collar body so that they can be inserted into the collar body of the connecting joint fitted to the upper end of the pillars of the H-shaped building frame at both ends of the material On the other hand, the free end portion of the diagonal member is provided with a pin hole to be inserted into the bracing pin projecting on the side surface of the opposite pedestal, and the mounting piece of the horizontal member is used as a collar body of the connecting joint. When inserting, lock the lock pin provided on the collar body to the unlocked state by turning it downward, and hook the hook of the inserted horizontal member on the top surface of the lock pin to lock it. And the upper H-shaped building frame is connected to the upper part of the connecting joint. When tying, after attaching the horizontal material mounting piece inserted into the collar body to the upper surface of the horizontal pin body of the lock pin, after inserting the pedestal of the upper H-shaped building frame into the connecting joint, Since the locking part of the lock pin is pivoted upward so that the horizontal piece is clamped while being locked , the operator lifts the handrail while staying on the safe lower scaffolding plate. It is possible to install or remove the handrail around the upper scaffolding board, and to ensure the safety of the operator. Further, since the attachment pieces having the through holes at both ends of the horizontal member of the handrail are inserted and fixed to the connecting joints of the leg pillars of the H-shaped building frame, the handrail can be firmly fixed and safe.

  According to the handrail for the frame scaffolding of the H-shaped building frame according to the present invention, when assembling the frame scaffolding composed of the H-shaped building frame upwards, the handrail is preceded around the uppermost part of the frame scaffolding. In the case of installation, the operator works from a safe scaffolding board one step below. The handrail is composed of a horizontal member and a pair of diagonal members pivotally supported at both ends of the horizontal member, and the operator first sets the pair of diagonal members of the handrail substantially orthogonal to the horizontal member, respectively. Then, the free ends of the diagonal members are lifted by holding the left and right hands respectively, and the horizontal member is positioned above the pedestal of the H-shaped building frame protruding to the top floor. Then, the through holes drilled in the attachment pieces at both ends of the horizontal member are placed on the upper part of the connecting joint fitted to the upper end of the pedestal, and are lowered downward to be inserted into the connecting joint.

The connection joint has a lock pin for connecting and fixing the upper building frame. If the lock pin is unlocked and the key-shaped locking part is turned downward to avoid it, it is inserted into the connection joint. The attached horizontal material attachment piece is caught by the upper surface of the horizontal bar portion of the lock pin and stopped. Next, the diagonal member is rotated while the horizontal member is maintained in that state, and the pin hole drilled in the free end portion is inserted into the bracing pin projecting on the side surface of the opposite pedestal and fixed. Then, a scaffolding board is installed between the horizontal members of the adjacent H-shaped building frames in the upper stage, and when the worker goes up on the scaffolding board on the top floor, handrails are already installed around the scaffolding board on the top floor. There is no problem in work safety.

Also, when disassembling the framework scaffold, the above procedure is reversed, and the operator descends onto the lower scaffolding plate with handrails installed around the top floor portion of the framework scaffold, Remove the scaffolding that was erected on the top. Subsequently, the locking between the pin hole and the brace pin of the free end portion of each diagonal member is released, and after rotating each diagonal member in the orthogonal direction with respect to the horizontal member, the free end portion of each diagonal member is Hold it with your left and right hands and lift it upwards. Pull out the mounting pieces at both ends of the horizontal member from the connecting joint to complete the removal of the handrail.

In this way, the operator can install or remove the handrails in advance around the upper scaffolding plate from the lower lower scaffolding plate, and work at the time of assembling the frame scaffolding of the H-shaped building frame or dismantling work Can be secured. In addition, insert the mounting pieces with the through holes at both ends of the horizontal material of the handrail into the connecting joint at the upper end of the pedestal of the building frame, and lock the pin hole at the free end of the diagonal of the handrail to the bracing pin Since the handrail is attached, it can be firmly fixed and becomes a safe handrail.

  Embodiments of the present invention will be described below with reference to FIGS.

  FIGS. 1 to 4 are views for explaining a state in which the handrail 1 according to the present invention is attached to a frame scaffold A formed by assembling an H-shaped building frame B and a scaffold plate C. FIG. The H-shaped building frame B is provided with a pair of pedestal columns D in parallel, and is formed in a substantially H shape by joining the vicinity of the center of each pedestal column D with a horizontal member E. Is fitted with a connecting joint F for connecting the H-shaped building frames B up and down. Then, a pair of H-shaped building frames B are set up facing each other, and a scaffolding plate C is installed between the horizontal members E of each H-shaped building frame B to form a framed scaffolding A.

And the handrail 1 for safety ensuring is spanned between the pillars D of the adjacent H-shaped building frame B. The handrail 1 includes a horizontal steel member 2 having a predetermined length, and a pair of steel diagonal members 3 pivotally supported by pins in the vicinity of both ends of the horizontal member 2. 2 are provided with attachment pieces 4 having circular through holes that open in the vertical direction, and the diameter of the through holes is slightly larger than the outer diameter of the collar body G at the center of the connection joint F. It can be inserted into the joint F.

The collar body G of the connecting joint F is bent in a key shape with a horizontal bar Ha which can be moved in and out with a coil spring in order to connect and hold the pedestal D of the upper H-shaped building frame B. A known lock pin H having a locking portion Hb is provided. Then, when the mounting piece 4 of the horizontal member 2 is inserted into the collar body G of the connecting joint F, the locking portion Hb of the lock pin H is rotated downward as shown by the solid line in FIG. In the released state, the mounting piece 4 of the inserted horizontal member 2 is hooked and locked on the upper surface of the horizontal bar Ha.

In addition, the diagonal member 3 has a pin hole 5 that can be inserted into a brace pin I protruding from the side surface of the pillar D of the H-shaped building frame B at the free end thereof. When the diagonal members 3 are rotated toward the opposite leg pillars D with the attachment pieces 4 at both ends being inserted into the connecting joint F, the pin holes 5 and the brace pin I positions coincide with each other. The pin hole 5 can be inserted into the brace pin I and latched.

The procedure for attaching the handrail 1 having the above configuration will be described with reference to FIG. First, the upper H-shaped building frame B is erected above the framework scaffold A (1) (2). Next, the operator turns the diagonal member 3 of the handrail 1 in a substantially orthogonal direction with respect to the horizontal member 2 while staying on the lower scaffolding plate C ′, and moves the free end of each diagonal member 3 to the left and right hands, respectively. The horizontal member 2 is positioned above the pedestal D of the H-shaped building frame B, and the through holes of the mounting pieces 4 provided at both ends of the horizontal member 2 are positioned above the connecting joint F at the upper end of the pedestal D. (3) Next, the horizontal member 2 is lowered downward while maintaining the horizontal state, and the attachment pieces 4 at both ends of the horizontal member 2 are inserted into the connecting joint F (4). At this time, the lock pin H of the connecting joint F is unlocked in advance, and the inserted attachment piece 4 is caught by the lock pin H and stopped.

  Subsequently, the diagonal members 3 are rotated in this state, and the pin holes 5 of the free end portions are respectively inserted and fixed to the brace pins I on the side surfaces of the opposite leg posts D (5) (6). Then, after the scaffolding plate C is installed between the horizontal members E of the adjacent H-shaped building frames B in the upper stage (7), the worker goes up to the top floor. At this time, the handrail 1 can be installed in advance around the scaffolding board C on the top floor, so that the operator does not feel much fear. In addition, when the scaffold is subsequently assembled on the upper stage, the same operation as described above is repeated.

At this time, as shown in FIG. 6, the upper H-shaped building frame B is attached to the connecting joint F with a new H-shape attached to the connecting member 4 while the mounting piece 4 of the horizontal member 2 inserted into the collar body G is left as it is. After fitting the pedestal D of the building frame B, the locking portion Hb is returned to the locking position to be in the locked state, and the mounting piece 4 of the horizontal member 2 is held together with the pedestal D of the upper H-shaped building frame B. . Further, when dismantling the framework scaffold, the work may be performed in the reverse order to the above, and the work can be performed safely.

In this way, the operator can install or remove the handrail 1 from the top of the lower lower scaffold plate around the upper scaffold plate, thereby ensuring the safety of the worker, and the horizontal material of the handrail 1 2 Since the attachment pieces 4 at both ends are inserted into the connecting joint F at the upper end of the pedestal D of the H-shaped building frame B, and the free end portion of the diagonal member 3 of the handrail 1 is attached to the bracing pin I of the H-shaped building frame B. It is safe because it can be firmly fixed without coming out.

It is a front view which shows the state which attached the handrail for frame scaffolds which concerns on this invention to the frame scaffold of an H-shaped building frame. It is a principal part enlarged view of FIG. FIG. 3 is an XX arrow view in which a part of FIG. 2 is omitted. It is the top view which abbreviate | omitted a part of FIG. It is explanatory drawing which shows the operation | work procedure which attaches the handrail for frame scaffolds which concerns on this invention to the frame scaffold of an H-shaped building frame. It is a figure equivalent to FIG. 3 of the state which connected the H type | mold building frame of the upper stage.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Handrail 2 ... Horizontal material 3 ... Diagonal material 4 ... Mounting piece 5 ... Pin hole A ... Frame assembly scaffold B ... H-type building frame C ... Scaffold board D ... Leg pillar E ... Horizontal member F ... Connection joint G ... Color body H ... Rock pin I ... Bracing pin

Claims (1)

A handrail that spans between the pillars of adjacent H-shaped building frames in a frame scaffolding that is assembled by arranging a desired number of H-shaped building frames in the upward and horizontal directions. It consists of a pair of diagonal members that are pivotally supported respectively, and at both ends of the horizontal member, so that it can be inserted into the collar body of the connecting joint fitted to the upper end of the pedestal of the H-shaped building frame , A mounting hole having a through hole slightly larger than the outer diameter of the collar body is attached, and a pin hole to be inserted into a bracing pin projecting from the side surface of the opposite pedestal at the free end of the diagonal member When the mounting piece of the horizontal member is inserted into the collar body of the connecting joint, the locking portion of the lock pin provided in the collar body is rotated downward to be in the unlocked state and inserted. Hook the horizontal material mounting piece on the top surface of the lock rod horizontal bar to lock it In addition, when the upper H-shaped building frame is connected to the upper part of the connection joint, the horizontal member inserted into the collar body is held on the upper surface of the horizontal bar body of the lock pin. After the pedestal of the upper H-shaped building frame is inserted into the connecting joint, the locking portion of the lock pin is rotated upward to hold the horizontal material mounting piece and lock it. A handrail for a framework scaffolding of an H-shaped building frame characterized by the above.

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