JPH0620740U - Work scaffolding - Google Patents

Abstract

(57) [Summary] [Purpose] Attach the handrail frame firmly to the work scaffold without rattling. [Structure] The handrail frame 11 is axially attached by passing through a fastening bolt 18 in a direction perpendicular to the axis line through the axis of an insertion tube 13 rotatably attached to the lower end of a column 12 of the handrail frame 11. At the four corners of the frame 2 on the mounting side, receiving fittings 22 having cutout grooves 24 into which the fastening bolts 18 are fitted are provided having an inner diameter substantially the same as the outer diameter of the insertion tube 13. Then, while inserting the base of the fastening bolt 18 axially attached to the insertion pipe 13 of the handrail frame 11 into the notch groove 24 of the receiving fitting 22, the insertion pipe 13 is inserted into the receiving fitting 22, and the fastening bolt 18 is tightened to insert the insertion pipe. 13 is attracted to the curved wall surface side of the receiving metal fitting 22 and firmly fixed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a work scaffold used for interior work of buildings, etc., and more particularly to a work scaffold having a handrail frame for safety curing.

[0002]

[Prior art]

 In the interior work of buildings, work scaffolds in which a scaffold plate is laid on the upper surface of a frame supported by legs to form a work floor are often used. This work scaffold has a handrail frame attached around the work floor to ensure safety during work.The handrail frame is attached to the frame body around the work floor by attaching the pillars of the handrail frame. A fixed tube for receiving and fixing is installed, and a pedestal fixing bolt is screwed on the side wall of this fixed tube.After inserting the pedestal of the handrail frame into the fixed tube, rotate the pedestal fixing bolt. The tip of the handrail is then pressed against the side wall of the pillar to fix the handrail frame.

[0003]

[Problems to be solved by the device]

 However, in a structure where the handrail frame is fixed by pressing the tip of the pedestal fixing bolt from the side against the pedestal of the handrail frame inserted in the fixed tube, the handrail may rattle even if it is intended to be firmly fixed, which is a safety hazard. I was still anxious.

In view of the above points, an object of the present invention is to provide a working scaffold in which a method of fixing a pedestal of a handrail frame is devised so that the handrail frame can be firmly fixed to a frame body.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a scaffolding board as a working floor on the upper surface of the frame body, and a scaffolding for work having a structure in which a handrail frame for securing work safety is attached around the upper surface of the frame body. , Rotatably mount an insertion tube for mounting a frame body on the lower end of the pillar of the handrail frame, and insert a fastening bolt through the insertion tube at a right angle to the axis of the insertion tube to set the axis of the insertion tube. Pass it through and screw the tip of the fastening bolt to the nut that is fixed to the side surface of the insertion tube, while installing a receiving bracket for fixing the insertion tube that has a curved wall that has an inner diameter almost the same as the outer diameter of the insertion tube. The frame is arranged at a position where the pedestal is attached, and a cutout groove into which the base portion of the fastening bolt is fitted is formed in the curved wall in the insertion direction of the insertion tube.

[0006]

[Action]

 According to the present invention, when the handrail frame is attached to the work scaffold, first, the fastening bolt screwed into the insertion pipe at the lower end of the pedestal is rotated in the loosening direction to open a gap between the bolt head and the insertion pipe. Then, let the pedestal of the handrail frame face above the receiving metal fittings to be attached, slide the pedestal along the curved wall of the receiving metal fitting, and at the same time, attach the base of the fastening bolt screwed to the insertion tube to the receiving metal fitting. Insert the insertion tube into the bracket while fitting it into the notch. At this time, since the insertion tube is rotatably attached to the lower end of the pedestal, the position of the fastening bolt of the insertion tube can be freely aligned with the notch groove of the bracket by rotating the insertion tube. .

When the inserting pipe is inserted into the receiving metal fitting and the fastening bolt fits into the notch groove of the receiving metal fitting, the fastening bolt is tightened to fix the inserting pipe to the receiving metal fitting. At this time, the insertion tube is fixed by pulling the insertion tube from the back side to the curved wall surface side of the bracket by the fastening bolt that penetrates the axial center of the insertion tube, so that the handrail frame can be firmly fixed. There is no lag.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

1 to 3 show an overall view of a working scaffold of the present invention. The working scaffold 1 has a rectangular frame 2 for mounting a scaffold plate on the upper part thereof, 2 The central portion is reinforced by the horizontal member 3, the legs 4 are attached to the four corners of the frame 2, and the base material 5 is fixed between the lower ends of the legs 4 located on the short side of the frame 2, Casters 6 are attached to the lower surfaces of both ends of the base material 5 so that they can be moved. In addition, diagonal members 7 are fixed between the frame 2 and the legs 4 by shafts 8 to reinforce the legs 4, and braces 9 are provided to the legs 4 on the longitudinal side of the frame 2 which face each other. It is stretched around to prevent the leg body 4 from rolling. The scaffolding plate 10 is placed on the upper surface of the frame body 2 formed in this way to form a working floor, and the pedestals 12 of the handrail frame 11 are attached to the four corners of the frame body 2 to support the working floor by the handrail frame 11. Surrounded.

FIG. 4 to FIG. 5 show details of a mounting portion of the handrail frame 11 and the frame body 2. FIG. 4 shows an insertion pipe for fixing the handrail frame 11 to a lower end portion of a pillar 12 of the handrail frame 11. 13 is shown in a mounted state. An upper portion of the insertion tube 13 is provided with a stepped portion by fixing a tube body 14 having an outer diameter substantially the same as the inner diameter of the pedestal 12, and a groove 15 is carved on the peripheral surface of the tip portion thereof. Is inserted into the pedestal 12. Then, the tip of the bolt 17 screwed to the collar body 16 fitted to the pedestal 12 is slightly inserted into the groove 15 and locked to prevent the insertion tube 13 from falling out of the pedestal 12 and inserted. The tube 13 is rotatable with respect to the pedestal 12.

Further, a fastening bolt 18 is passed through the insertion tube 13 through the axis of the insertion tube 13 and in a direction perpendicular to the axis, and a tip end thereof is attached to a nut 19 fixed to a side surface of the insertion tube 13. It is installed by screwing in. Further, for the convenience of turning the fastening bolt 18, a cylinder 20 is fixed to the head of the fastening bolt 18, and a rotating handle 21 for rotating the fastening bolt 18 is inserted into the cylinder 20. I am letting you. At the tip of the insertion tube 13, there is attached an internal piece 23 for smoothly inserting into the metal fittings 22 provided at the four corners of the frame body 2 shown in FIG.

The receiving metal 22 is formed by bending a plate body into a substantially U-shaped cross section to form a curved wall having an inner diameter substantially the same as the outer diameter of the insertion tube 13, and the open end of the wall is the frame body 2. The end portion of the frame body 2 is cut out in a semicircular shape so that the insertion portion of the insertion tube 13 can be fixed by the curved wall of the receiving metal fitting 22 and the semicircular cutout portion of the frame body 2. Is forming. A notch groove 24, which is slightly wider than the outer diameter of the fastening bolt 18 screwed to the insertion tube 13, is formed in the upper edge portion of the receiving metal fitting 22 in the vertical direction, that is, in the insertion direction of the insertion tube 13. There is.

Next, a procedure for attaching the handrail frame 11 to the frame body 2 will be described with reference to FIGS. 6 to 8.

As shown in FIG. 6, the fastening bolt 18 of the insertion tube 13 mounted on the pedestal 12 of the handrail frame 11 is rotated in a loosening direction to form a gap between the head of the fastening bolt 18 and the side surface of the insertion tube 13. The opening is opened and the lower end of the insertion tube 13 is exposed to the receiving metal fitting 22 to be attached. When the position of the fastening bolt 18 is not located above the notch groove 24 of the bracket 22, the insertion tube 13 is rotated so that the fastening bolt 18 is positioned above the notch groove 24. . Then, as shown in FIG. 7, the insertion tube 13 is inserted into the insertion portion formed by the curved wall of the receiving metal fitting 22 and the notch of the frame body 2, and at the same time, the base of the fastening bolt 18 is fitted into the notch groove 24. To do. When the insertion tube 13 is inserted, the guide piece 23 attached to the distal end serves as a guide for easy insertion.

When the insertion tube 13 is set in a fixed position as shown in FIG. 8, the rotation handle 21 of the fastening bolt 18 is rotated in the direction in which the bolt is fastened, and the fastening tube 18 pulls the insertion tube 13 to insert it. The side surface of the tube 13 is fixed by closely contacting the inner surface of the curved wall. In this way, the insertion pipe 13 of the handrail frame 11 is attracted from the back side to the curved wall surface of the bracket 22 and fixed by the fastening bolt 18, so that the handrail frame 11 can be firmly fixed without rattling.

It should be noted that the present invention is not limited to the above-mentioned specific embodiment, and various modifications can be made within the technical scope of the present invention, and the working scaffold is not limited to the embodiment. It is needless to say that the present invention is not limited to the scaffolding for moving as shown in, but can be applied to various scaffolding with a handrail.

[0017]

[Effect of device]

 As described above, according to the present invention, the fastening bolt 18 is passed through the center of the insertion tube 13 rotatably attached to the lower end of the pedestal 12 of the handrail frame 11 in a direction perpendicular to the axis line so as to pass through the shaft. On the other hand, a metal fitting having a notched groove 24 into which the fastening bolt 18 is fitted, at the four corners of the frame body 2 on the side where the handrail frame 11 is mounted, the inner diameter being substantially the same as the outer diameter of the insertion tube 13. 22 is attached, and while inserting the base of the fastening bolt 18 screwed into the insertion pipe 13 of the handrail frame 11 into the notch groove 24 of the receiving metal fitting 22, insert the insertion pipe 13 into the receiving metal fitting 22 and insert with the fastening bolt 18. Since the pipe 13 is attracted and fixed from the back surface to the curved wall surface of the bracket 22, the handrail frame 11 can be firmly fixed without rattling.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a work scaffold according to the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a plan view showing a state where a handrail frame in FIG. 1 is removed.

FIG. 4 is a partially cutaway perspective view of a lower end of a pillar of a handrail frame.

FIG. 5 is a perspective view of a receiving metal fitting portion to which a handrail frame is attached.

FIG. 6 is a perspective view illustrating a procedure for attaching a handrail frame.

FIG. 7 is a perspective view illustrating a procedure for attaching a handrail frame.

FIG. 8 is a perspective view illustrating a procedure for attaching a handrail frame.

[Explanation of symbols]

1 ... Scaffolding 2 ... Frame 3 ... Leg 10 ... Scaffolding board 11 ... Handrail frame 12 ... Pillar 13 ... Insertion tube 18 ... Fastening bolt 19 ... Nut 22 ... Receptacle 24 ... Notch groove

Claims (1)

[Scope of utility model registration request] 1. A scaffolding for a handrail frame, wherein a scaffolding plate serving as a work floor is laid on the upper surface of the frame body, and a handrail frame for securing work safety is attached around the upper surface of the frame body. An insertion tube for mounting a frame is rotatably attached to the lower end portion, and a fastening bolt is passed through the insertion tube at a right angle to the axis of the insertion tube so as to pass through the axis of the insertion tube. The tip of the screw is screwed to the nut fixed to the side surface of the insertion tube, while the bracket for fixing the insertion tube with the curved wall having the inner diameter almost the same as the outer diameter of the insertion tube is attached to the pedestal of the frame. The scaffolding for working is characterized in that a cutout groove into which the base of the fastening bolt is fitted is formed in the curved wall in the insertion direction of the insertion tube.