JP2002317559A - Master rope stretching device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new master rope stretching device capable of solving such a fact that tightening work of the conventional master rope is troublesome and that there is a fault lacking safety in the conventional master rope stretching device. SOLUTION: The new master rope stretching device is constituted of a belt having a hook on one end and a connecting device connected to the other end of the belt, the connecting device is formed of a base capable of being hooked, a slider connected to the base in a movable manner, a belt penetrable hole formed in the slider and a lever capable of opening and closing the upper surface of the slider pivoting the basic end on the base in a rotatable manner, the free end of the lever is hooked on the slider in a releasable manner, and when the lever is pivoted, the slider is relatively pushed out to the base, and the belt inserted in the belt penetrable hole of the slider is tightened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parent rope tensioning device, and more particularly to a safety rope tensioning device used at a construction site or the like.

[0002]

2. Description of the Related Art When working at a high place such as a building site such as a building or an elevated portion of an expressway, as shown in FIG. And one end of the short rope 4 is connected to a belt or the like worn by the worker 5, and a latch 6 attached to the other end of the rope 4 is movably hooked to the master rope 3, 5
Is about to fall off the scaffold 1, but the worker 5
A safety device is used which is tied to the main rope 3 to prevent falling.

[0003] In the above safety device, the master rope 3 is
In order to install the main rope 3 between the main rope 3 and the iron pole 2, the main rope hooks 7 are welded to the corners of each iron pole 2, and the latches 8, 8 attached to both ends of the main rope 3 are hooked to these hooks. Like that.

Further, in a parent rope tensioning apparatus disclosed in Japanese Utility Model Registration No. 3045613, a belt serving as the parent rope is disposed so as to surround a plurality of columns, and a belt welded to one of the columns is provided. One end of the belt is connected to a tightening machine, the other end of the belt is wound around a winding drum of the belt tightening machine, and the length of this winding is adjusted by repeating the undulation of a lever of the belt tightening machine. Is tightened.

[0005]

However, since the above-mentioned conventional parent rope tensioning apparatus attaches a belt to a belt tightening machine at a construction site, the work on site is required and it is dangerous. However, there is a drawback that the tightening operation cannot be performed with one touch, the operation is complicated and takes a long time, and the belt may loosen due to careless movement of the lever.

The present invention has been made to eliminate the above disadvantages.

[0007]

According to a first aspect of the present invention, there is provided a parent rope tensioning device comprising a belt having a hook attached to one end of the parent rope, and a coupling device coupled to the other end of the belt.
The connecting device includes a base on which the hook can be hooked, a slider slidably connected to the base, a belt through-hole formed in the slider, and a base end rotatably supported on the base by the base. A lever capable of opening and closing the upper surface of the slider, a releasable stopper for locking a free end of the lever to the slider, and a lever for pushing the slider relatively to the base when the lever is rotated. , And a belt-holding rod of the belt that passes through the belt through-hole of the slider.

[0008]

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

As shown in FIG. 1 to FIG. 5, the master rope tensioning device of the present invention is connected to a belt 11 serving as a master rope, a hook 12 fixed to one end of the belt 11, and the other end of the belt 11. The connection device 13 is used.

The connecting device 13 is a base plate 1 having a rectangular plate shape.
4, a pin 15 attached to one end of the base 14 for detachably connecting the hook 12, a long hole 16 formed on the base 14, and one end of the base 14 along the long hole 16. A slider 17 disposed on the base 14 so as to be slidable in the direction, a stopper 18 provided at one end of the slider 17 along the slider 17 so as to be slidable in the other end, and the other end of the slider 17 A belt through hole 19 through which the other end of the belt 11 formed is inserted, and an upper surface of the slider 17 whose base end is rotatably supported at the other end of the base 14 via a pin 20 can be opened and closed. Lever 21 with a U-shaped cross section
And a claw 22 formed at the free end of the lever 21 so as to engage with one end of the stopper 18, a protruding pin 23 protruding and fixed to the other side surface of the slider 17, and pushing the protruding pin 23 to Slider 17 to base 1
Lever 2 so that it can be moved to one end side along
An engagement surface 24 such as an arcuate surface or an inclined surface formed on one side surface;
A magnet 25 projecting from the lower surface of the base 14;
At the exit of the belt through hole 19 of the slider 17, the tip tooth portion 26 can be freely separated from and brought into contact with the belt through hole 19.
The intermediate portion of the belt 11 is released by the slider 1 so that the belt 11 that has passed through the
7 and a belt-holding rod 27 pivotably supported.

The slider 17 is provided with a spring 2
8, the belt 17 is always suppressed to one end side of the slider 17 relative to the slider 17, and the belt retaining rod 27 is always held at its tip toothed portion 2 by a spring (not shown).
6 prevents the slider 17 from engaging with the belt 11 passing through the belt through hole 19 of the slider 17.

Since the parent rope tensioning device of the present invention has the above-described configuration, the belt 11 is previously passed through the belt through hole 19 of the slider 17 and the length of the belt 11 is set to a substantially desired value. The state is brought to the construction site as a state, the work site is sectioned along the pillars at the site, and the hook 12 is hooked on the pin 15 of the base 14.

In this state, the belt 11 that has passed through the belt through hole 19 of the slider 17 is gripped by the slider 17, and the belt 11 is in a sufficiently tightened state via a column.
1 is rotated clockwise in FIG. 1 to engage the pawl portion 22 at the free end thereof with the stopper 18. At the same time, the engaging surface 24 of the lever 21 pushes the protruding pin 23 and the slider 1
7 is moved from the other end of the base 14 to one end side,
The belt 11 is further tightened by a distance corresponding to the stroke of the slider 17.

In this state, even if the slider 17 attempts to move in the other end direction, the slider 17 is blocked by the engaging surface 24 of the lever 21 and the lever 21 covers the locking rod 27, so that the locking The rod 27 is not rotated unnecessarily, and therefore there is no possibility that the belt 11 is released and inadvertently loosened.

If the magnet 25 is attracted to a pillar, the connecting device 3 can be prevented from falling off.

[0016]

As described above, according to the parent rope tensioning device of the present invention, the belt 11 having a desired length can be carried to the site while being connected to the connecting device 3, so that the hook can be mounted on the site. Hooking the pin 12 on the pin 15 is sufficient and extremely simple.

Further, since the tightening of the belt 11 can be performed by one-touch operation by the rotation of the lever 21, not only the tightening work becomes extremely simple, but also the state in which the lever 21 pushes the slider 17 and becomes substantially horizontal. Lever 2
Since the first claw portion 22 is engaged with the stopper 18, the lever 21 cannot be disengaged from the slider 17 unless the stopper 18 is moved by the spring 28. Is covered by the lever 21, the latching rod 27 is operated erroneously, and the belt 11 is prevented from being loosened.

[Brief description of the drawings]

FIG. 1 is a front view of a parent rope stretching device of the present invention.

FIG. 2 is a plan view of the parent rope stretching device shown in FIG.

FIG. 3 is a front view showing a state where a lever is closed in FIG. 1;

FIG. 4 is a plan view of the parent rope stretching device shown in FIG. 3;

FIG. 5 is a perspective view of the parent rope stretching device shown in FIG. 1;

FIG. 6 is an explanatory view of a conventional parent rope laying site.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Scaffold 2 Iron pole 3 Master rope 4 Rope 5 Worker 6 Hook 7 Hook 8 Hook 11 Belt 12 Hook 13 Connecting device 14 Base 15 Pin 16 Slot 17 Slider 18 Stopper 19 Through hole 20 Pin 21 Lever 22 Claw part 23 Projection pin 24 Engagement surface 25 Magnet 26 Tip tooth 27 Locking rod 28 Spring

Claims (1)

[Claims] 1. A belt, which is a master rope, having a hook attached to one end thereof, and a connecting device connected to the other end of the belt, wherein the connecting device comprises a base capable of hooking the hook, A slider slidably connected to the base, a belt through-hole formed in the slider, a lever capable of pivotally supporting the base end of the slider to the base and capable of opening and closing the upper surface of the slider; A stopper that allows the end to be hooked on the slider, a stopper that can be released, an engagement surface formed on the lever to push the slider relatively to the base when the lever is rotated, and a belt through hole of the slider. And a belt-holding rod for the belt.