JP2009035882A - Falling preventive member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a falling preventive member improving working efficiency by allowing movement on a long distance on a scaffolding board without replacing a safety belt, and by safely constructing a temporary scaffold by quickly tensioning a rope for the safety belt with a simple constitution. <P>SOLUTION: This falling preventive member constitutes a lower pole 10a for installing a lower locking part 20 having a substantially U-shaped lower locking claw 21 and a tensioner 26 of a rope 12 and an upper pole 10c for vertically fixing an upper locking claw 31 to the tip and installing a rope fixing part 33, and the lower pole 10a and the upper pole 10c are connected by a bending part 10b. While, in the fall preventive member, a pocket engaging with the lower locking claw 20 and the upper locking claw 30 is constituted in vertical columns 210 and 240 erected on the ground by shifting a phase on a vertical column peripheral surface, and the lower locking claw 20 and the upper locking claw 30 are respectively engaged with the pocket different in the phase. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a fall prevention member for a temporary scaffold installed along the outer wall of a building at a construction site or the like.

  At construction sites and civil engineering industrial sites, temporary scaffolds are constructed along the outer periphery of buildings to provide passages and install scaffolding boards. This temporary scaffold is constructed up to a high position corresponding to the high floor of the building. Therefore, various measures have been taken to protect the safety of workers who work on the temporary scaffold.

The invention disclosed in Patent Document 1 relates to a leading handrail. According to this leading handrail, a horizontal strut is rotatably mounted on the upper end of a pair of left and right vertical struts, and a guide in which a lifeline is coupled to the horizontal strut can be slid while using this horizontal strut as a strut for a master rope. Inserted.
The preceding handrail uses a rigid horizontal support as a support for the master rope, so even if the operator falls, the horizontal support does not bend or extend greatly, so the operator's fall distance is shorter than that of the rope. Therefore, the load and impact on the worker can be reduced.

The invention disclosed in Patent Document 2 relates to a lifeline master rope tensioning device. According to this apparatus, upper and lower fixed roller bodies and elastic roller bodies that guide and raise the vertical rod are attached to the left and right main pillars on which the master rope is stretched, and fixing means for fixing to the vertical rod is provided. The base end of the tow rope that raises and lowers the scaffold body from the lower part of the main pillar is fixed, the drum body that stretches the main rope is attached to one main pillar, and the main rope wound around the drum body is attached to the one side The other end of the main pillar is fixed to the upper end of the other main pillar via a master rope tension pulley at the upper end of the main pillar.
According to the present invention, since the parent rope construction work at a high place where the scaffolding is poor can be carried out safely and speedily by the joint work with the upper and lower fixed roller bodies and the pressure roller body, the construction of the temporary scaffold for construction Easy to dismantle.
JP-A-2005-207225 JP 2000-17848 A

The handrail described in Patent Document 1 has a complicated structure and is bulky when transported, so it is cumbersome to handle at the work site, and the horizontal support is separated into one, so the lifeline is replaced for each horizontal support. You have to move while.
Moreover, the lifeline master rope tensioning device described in Patent Document 2 has a complicated structure for raising and lowering the left and right main pillars, and the lifting work is also complicated. In addition, since the devices attached to the left and right main pillars are different, the left and right main pillars are configured separately, and the main pillar must be replaced with a downpipe after each operation, and the lifeline is continuously stretched. I can't.
For this reason, if the span for laying the lifeline is shortened, the replacement work of the main pillar becomes complicated, and if the span is lengthened, the lifeline cannot be tensioned and stretched, and there is a problem that the lifeline is sag.

  The present invention has been made in view of the above-described problems of the conventional example, and a rope for a safety belt can be quickly stretched with a simple configuration, so that a temporary scaffold can be safely constructed. In addition, the present invention provides a fall prevention member that can continuously stretch a rope using the same shape fall prevention member on the left and right vertical struts to improve work efficiency.

  The gist of the present invention is that it comprises a lower locking portion provided with a lower locking claw, a lower pole constituting a rope tensioner, an upper locking portion provided with an upper locking claw, and a rope hooking portion. The upper pole is configured, the lower pole and the upper pole are connected by a bent portion, and a pocket in which the lower locking claw and the upper locking claw are engaged is formed on the peripheral surface of the vertical column standing on the ground. The fall prevention member is configured to be shifted in phase, and the lower locking claw and the upper locking claw are respectively engaged with the pockets having different phases to be attached to the vertical column.

  Further, the gist of the present invention is that the lower locking portion has two substantially U-shaped lower locking claws arranged oppositely to fix one side to the auxiliary plate and the other side to the lower pole. Further, the auxiliary plate is configured to prevent the upper plate, and the upper locking portion includes a horizontal support portion in which an upper locking claw is vertically fixed at a tip, and an upper end of the upper pole perpendicular to the horizontal support portion. And a rope hooking portion fixed to the rope hooking portion. A partition member is attached to the end portion of the rope hooking portion and a hook hooking portion for hooking the hook at the tip of the rope is formed.

According to the first aspect of the present invention, the lower pawl and the upper pole are connected at the bent portion, and the axis of the lower pawl and the upper pole is shifted so that the upper latching claw is longer than the lower latching claw. Since it engages with pockets having different phases on the circumferential surface, the upper locking portion can be attached without interfering with other struts, scaffolding plates and the like.
And since the rope for the safety belt can be quickly and easily stretched on the vertical column, the number of parts is reduced, and the temporary scaffold can be constructed quickly and safely. Further, by adjusting the installation interval of the poles and lengthening the rope, it is possible to move a long distance on the scaffolding plate without changing the safety belt, so that the working efficiency is improved.

  According to a second aspect of the present invention, the lower locking portion is securely engaged with the pocket to prevent the upper locking portion from being pulled out, and the upper locking portion can be operated by hooking the hook at the hook end of the rope. This produces the effect that the rope can be easily stretched.

The best mode for carrying out the present invention includes a lower locking portion having a substantially U-shaped lower locking claw, a lower pole to which a rope tensioner is attached, and an upper locking claw fixed vertically at the tip. An upper pole is formed by attaching a horizontal support portion and a rope hooking portion fixed to the upper end of the upper pole perpendicular to the horizontal support portion, and the lower pole and the upper pole are connected by a bent portion.
On the other hand, a pocket in which the lower locking claw and the upper locking claw are engaged with the vertical support column standing on the ground is configured with a phase shift of 90 degrees on the peripheral surface of the vertical support column. It is a fall prevention member in which a nail | claw was engaged with the pocket from which the said phase differs, respectively, and was attached to the vertical support | pillar.

1st Embodiment of the fall prevention member of this invention is described based on figures.
FIG. 1 is a front view of the present embodiment, FIG. 2 is an enlarged plan view thereof, FIG. 3 is a left side view thereof, FIG. 4 is an explanatory view showing the same usage mode, and FIG. FIG. 6 is an enlarged perspective view of the lower locking portion, FIG. 7 is an enlarged perspective view of the upper locking portion, and FIG. 8 is an explanatory view showing an attachment state of the pole to the column.

  The fall prevention member 1 includes a long pole 10, an upper locking portion 30 fixed to the upper portion thereof, a lower locking portion 20 fixed to the lower portion, and the like.

The pole 10 is composed of a pipe having a length of about 150 cm, and connects the lower pole 10a with the lower locking portion 20 and the upper pole 10c with the upper locking portion 30 and the lower pole 10a and the upper pole 10c. It is comprised by the bending part 10b.
That is, since the pole 10 is bent at the substantially central portion by the bent portion 10b, the upper pole 10c is translated by a distance L in a direction perpendicular to the lower locking claw 21 (right side in FIG. 1). The axis is shifted from 10a (see FIG. 2).
The lengths of the lower pole 10a, the upper pole 10c, and the bent portion 10b are arbitrary. In the present embodiment, the lengths are about 68 cm, about 66 cm, and about 30 cm, respectively. It was set to 55 mm.

Pockets 41 and 42 are attached to the vertical columns 210, 220, 230, and 240 erected on the ground. The pockets 41 and 42 are for attaching the horizontal struts 110 and 130, the handrails 120 and 140, and the like, and as shown in FIG. 8, the lower pockets 41 and 41 and the upper pockets 42 and 42 are respectively locked downward. The part 40 and the upper locking part 50 are configured.
The lower pocket 41 and the upper pocket 42 are fixed on the circumferential surface of the vertical struts 210 to 240 with a step of about 40 mm with a phase shift of 90 degrees. This step is to prevent the lower locking claw 21 and the upper locking claw 31 from interfering with the horizontal strut or the scaffolding plate.
In the field where such interference does not occur, the lower pocket 41 and the upper pocket 42 may be arranged on the same plane without providing a step.

As shown in FIG. 6, the lower locking portion 20 has two substantially U-shaped lower locking claws 21 arranged opposite to each other to fix one side to the auxiliary plate 22 and the other side to the lower pole 10a with bolts 23, 23 is fixed.
At the lower part of the auxiliary plate 22, a stopper 29 is rotatably arranged by a support shaft 28.
The stopper 29 is L-shaped, and the tip of the horizontal portion protrudes outward from a recess 21 b formed in the lower part of one lower locking claw 21, and the lower locking claw 21 engages with the lower pocket 41. It acts to prevent later withdrawal.

  A tensioner 26 of the rope 12 is fixed by a bolt 24 to the lower pole 10 a in the vicinity of the lower locking claw 21. This serves to maintain the tension of the rope 12 by fixing the end of the rope 12 when the rope 12 is stretched.

As shown in FIG. 7, the upper locking portion 30 is attached to the upper portion of the upper pole 10c, and an upper locking claw 31 is vertically fixed to the tip of a horizontal support portion 32 protruding horizontally.
As described above, since the axis of the upper pole 10c is shifted from the lower pole 10a by the bent portion 10b, when the lower locking claw 21 is engaged with the lower pocket 41 as shown in FIG. The pawl 31 comes into contact with the right side surface of the vertical column 210.
Therefore, the upper locking claw 31 can be engaged with the upper pocket 42 of the upper locking portion 50 attached to the lower pocket 41 and the circumferential surface of the vertical column 210 with a phase shifted by 90 degrees.
This prevents the upper locking portion 30 from interfering with the lower pocket 41 when the fall prevention member 1 is attached to the vertical struts 210 and 240 by the lower locking portion 20 and the upper locking portion 30 as will be described later. Because.

The upper locking claw 31 is longer than the lower locking claw 21 for the following reason.
As shown in FIG. 1, when the lower locking claw 21 is engaged with the lower pocket 41 of the lower locking portion 20 and the upper locking claw 31 is engaged with the upper pocket 42 of the upper locking portion 30, both pockets The distance between 41 and 42 becomes long.
On the contrary, when the lower locking claw 21 is engaged with the upper pocket 42 of the lower locking portion 20 and the upper locking claw 31 is engaged with the lower pocket 41 of the upper locking portion 30, both pockets 41, The distance between 42 is shortened.
Thus, in order to correspond to the distance between the two different pockets 41, 42, the upper locking portion is compared with the length of the lower locking claw 21 with reference to the contact surface 21a contacting the upper end of the pocket of the lower locking claw 21. The nail | claw 31 is lengthened.

On the other hand, a U-shaped rope hooking portion 33 is fixed to the upper end of the pole 10 perpendicular to the horizontal support portion 32. The rope hooking portion 33 has a partition 35 attached to an end portion, and a hook hooking portion 33a is formed on the outside thereof. A hook 39 provided at the tip of the rope 12 is hung on the hook hanging portion 33a.
Further, a roller 36 is rotatably arranged on the horizontal bar 33b below the rope hooking portion 33, and the rope 12 is smoothly fed by the roller 36.
In the above, it is possible to adopt a simple configuration in which the tip of the rope 12 is directly caulked and fixed to the upper end of the pole 10 without forming the rope hooking portion 33.

Next, the effect | action of this embodiment is demonstrated based on FIG.
(1) The vertical struts 210, 220, 230, 240 are erected on the ground, and the three horizontal struts 110 are bridged between the vertical struts 210-240. At this time, the both ends of the horizontal strut 110 are engaged with the upper pockets 42, 42.
Thereafter, the first-stage scaffolding plates 310, 310, 310 are mounted on the horizontal strut 110 using a bracket (not shown).
(2) Next, three handrails 120 are engaged with the upper pockets 42, 42...
(3) In order to lay the second-stage scaffolding plate 320, the three horizontal struts 130 are engaged with the pockets 42, 42... Above the corresponding vertical struts 210-240.
(4) The hook 39 of the rope 12 is hung on the hook hooking portion 33 a of the upper locking portion 30 of the pole 10, the rope 12 is hung on the roller 36, and the lower end of the rope 12 is fastened with the tensioner 26.
(5) Thereafter, the pole 10 is lifted, and the upper locking claw 31 is inserted into the upper pocket 42 of the upper locking portion 50 of the vertical column 240 from above, and at the same time, the lower locking claw 21 is locked to the lower side of the vertical column 240. Inserted into the pocket 41 below the portion 40 from above.
(6) Then, the other end of the rope 12 is hung on another pole 10, and the other pole 10 is lifted in the same manner as described above while the rope 12 is extended, and the upper locking portion of the vertical column 210 separated by 3 spans. 50 and the lower locking portion 40 are inserted into the corresponding pockets 42 and 41, respectively.
In the above operation, when the rope 12 is hung, it can be hung directly on the roller 36 without using the hook 39.
(7) The rope 12 is stretched between the poles 10 and 10, and the tensioned state is maintained by the tensioner 26.
(8) Using three brackets (not shown) in the second stage, the three scaffolding plates 320 are fixed to the upper portions of the horizontal struts 130, 130, 130.
(9) Climb on the second stage scaffolding plate 320 and put the safety belt B on the rope 12.
(10) The fall prevention work is completed by attaching the second-stage handrails 140, 140, 140 between the vertical columns 210-240 in the same manner as the first stage.
In this way, the third and subsequent stages are sequentially constructed.

As described above, according to the fall prevention member of the present embodiment, since the locking member is provided on the upper and lower sides of the movable pole, the number of parts is reduced, and the rope can be stretched for three spans at a time. Thus, the work of installing the conventional three prior handrails can be performed in one operation, and the work efficiency is improved.
Furthermore, when constructing a temporary scaffold, it is possible to move a long distance on the scaffold plate without changing the safety belt, so that the working time can be shortened and the working efficiency can be improved.

Front view of the first embodiment of the present invention The enlarged plan view of a 1st embodiment of the present invention. Left side view of the first embodiment of the present invention Explanatory drawing which shows the usage condition of 1st Embodiment of this invention. AA arrow view with a part of FIG. 4 omitted Enlarged perspective view of the lower locking part Enlarged perspective view of the upper locking part Explanatory drawing showing the mounting state of the pole to the column

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fall prevention member 10 Pole 12 Rope 20 Lower latching part 21 Lower latching claw 26 Rope tensioner 30 Upper latching part 31 Upper latching claw 32 Horizontal support part 33 Rope latching part 33a Hook latching part 35 Partition 36 Roller 41 Lower pocket 42 Upper pocket 110 Horizontal strut 130 Horizontal strut 120 Handrail 140 Handrail 210 Vertical strut 220 Vertical strut 230 Vertical strut 240 Vertical strut 320 Scaffolding plate 330 Market plate

Claims (2)

A lower locking part having a lower locking claw, a lower pole that forms a rope tensioner, an upper locking part that has an upper locking claw, and an upper pole that forms a rope hanging part, While connecting the pole and upper pole at the bent part,
A pocket that engages the lower locking claw and the upper locking claw on the peripheral surface of the vertical support column erected on the ground is configured by shifting the phase,
A fall preventing member for engaging the lower locking claw and the upper locking claw with the vertical struts by engaging the pockets having different phases. The lower locking portion has two substantially U-shaped lower locking claws arranged opposite to each other, and fixes one side to the auxiliary plate and the other side to the lower pole, and further prevents the auxiliary plate from coming off. Made up of,
The upper locking portion is composed of a horizontal support portion in which an upper locking claw is fixed vertically at the tip, and a rope hooking portion fixed to the upper end of the upper pole perpendicular to the horizontal support portion,
The fall prevention member according to claim 1, wherein a partition is attached to an end portion of the rope hooking portion to form a hook hooking portion for hooking a hook at the tip of the rope.

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