JP2592304Y2 - Rail direction changer for fall prevention device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a direction change device for a rail for a fall prevention device used at heights such as a power transmission tower.

[0002]

2. Description of the Related Art In power transmission and distribution towers and the like, a safety device is fitted to a guide rail provided along a tower in order to prevent a worker from crashing. I work on high places by connecting the safety belt to Such guide rails are generally for lifting and horizontal movement, but when transferring a safety device from one to the other, a direction change device is required, one of which is known as shown in FIG. ing. This is provided with a rotating rail 23 in a circular container-shaped main body 20 at an orthogonal portion between the elevating rail receiver 21 and the horizontal rail receiver 22. The rotating rail 23 has a short rail 24 protruding from a circular substrate, and stoppers 25 parallel to the short rail protruding on both sides of the short rail.
The shaft is supported concentrically with the body. In the figure
27 is a retainer. In use, a rail connected to the rotating rail is fixed to each rail receiver, but this is omitted in FIG.

For example, when the fall prevention device is transferred from a horizontal rail to a lifting rail (both not shown), the rotating rail 23 is directed toward the horizontal rail receiver 22 as shown in FIG. After sliding on the rotating rail 23, the rotating rail 23 is rotated in the direction of the lift rail receiver 21 to transfer the safety device to the lift rail. At this time, of the vertical and horizontal rails, the rail that is not connected to the rotating rail 23 is opened in the body 20 of the direction changer, and other workers are exposed to the danger of falling. By the way, in such a direction changer, the rotating shaft 26 is used as the rotating rail, and the rotating shaft 26 and the rotating rail are used.
Grease is applied to the bearing part of 23 to ensure lubrication, but since the converter itself is always exposed outdoors, there was a problem that it became difficult to rotate due to rust and weathering of grease oil. .

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and is intended to rotate a rotating rail without using a rotating shaft. Its features are:
A direction change device for a fall prevention device rail provided with a circular container-shaped main body and a rotating rail rotating inside the main body in an orthogonal portion of the rail, wherein the rotating rail is a short rail on a circular substrate almost inscribed in the main body. Stoppers are provided in parallel, and a plurality of positioning recesses are formed on the surface of the substrate,
An elastic body is interposed between the main body bottom and the main body. A rotating rail holder corresponding to the positioning recess is projected from the inner peripheral surface of the main body, and the rotating rail is rotatably connected to the main body.
In that there is no rotating shaft .

[0005] Here, a spring is preferable as the elastic body, and a plurality of spring holding portions may be protruded from the bottom of the main body, and the spring may be held in contact with the spring holding portion. At this time, it is preferable to form a guide groove concentric with the substrate in an arc shape on the back surface of the circular substrate, lengthen one of the spring holding portions, and use this as a guide that engages with the guide groove. is there.

[0006]

Embodiments of the present invention will be described below. As shown in FIG. 1, the directional change device of the present invention includes a circular container-shaped main body 1 and a rotating rail 2 rotating inside the vertical section of the vertical rail and the horizontal rail. First, as shown in FIG. 2, the main body 1 is integrally formed with rail receivers (vertical rail receiver 1B, horizontal rail receiver 1C) extending from the circular container 1A at right angles to each other. A drain hole 3 is formed at the center of the bottom of the circular container 1A, and four spring holding portions 4 are arranged around the periphery thereof so as to protrude in a substantially square shape. The spring holding portion 4 has a short rod shape, and as will be described later, only one of them is slightly longer, and this serves as a guide to be engaged with the rotating rail.

[0007] At the peripheral wall of the main body, mounting holes 6 for the rotary rail retainer 5 are provided at four locations on a 45 ° line with respect to the vertical rail receiver 1B. Rotary rail holder 5 is shown in FIG.
As shown in (A), a screw having a cylindrical head was fitted into the mounting hole 6 from the inside of the main body, and fixed with a grooved nut 7 from the outside. This peripheral wall is not a uniform height, the joint of the vertical and horizontal rail receiver is low, and from about 45 degrees to the right to the vertical rail receiver to the position facing the horizontal rail receiver, The portion from about 135 ° to the left to the position facing the vertical rail receiver is formed high, and the raised portion serves as a stopper for the safety device. The portions formed low are indicated by oblique lines rising left, and the portions formed high are indicated by oblique lines rising right.

As shown in FIG. 3, two rails are symmetrically opposed to each other in each rail receiver, and a rail clamp 8 having an open upper part is provided therein and fixed by bolts 9. Although only the rotating rail 2 is shown in the figure,
Actually, a rail (not shown) is sandwiched in a groove 10 formed in the middle of the rail clamp 8 and is continuous with the rotating rail 2.

An erroneous operation preventing plate 11 is fixed to the outside of the rail receiver by the bolt 9 described above. This is to prevent the safety device (not shown) from being mistaken in the correct orientation when it is fitted to the rail. In this case, the projection provided on the safety device comes into contact with the prevention plate 11 and becomes a barrier for fitting.

On the other hand, as shown in FIG. 4, the rotating rail 2 has a short board 2B and a stopper 2C protrudingly provided on a circular substrate 2A substantially inscribed in the main body. The short rail 2B has a substantially I-shaped cross section welded to the center of the substrate, has a length substantially equal to the diameter of the substrate 2A, and is continuous with the vertical rail or the horizontal rail by the rotation of the substrate 2A.

The stopper 2C is a rectangular plate welded in parallel with the short rail. Among the vertical rails and the horizontal rails, the rail that is not connected to the rotating rail 2 is opened in the main body of the direction changer, so that it is shut off. To protect other workers from the danger of falling. In this embodiment, the short rail 2B is provided substantially at the center of the periphery of the substrate.

A plurality of positioning recesses 2D having a cylindrical shape are formed on the peripheral edge of the substrate surface. The short rail 2B engages with the rotating rail retainer 5 protruding inside the peripheral wall of the main body to hold the rotating rail 2 in a predetermined direction.
Were formed at every 45 ° with respect to the reference line.

Further, a guide groove 2E is formed on the back surface of the substrate 2A. This is an arc-shaped groove that limits the rotation angle of the rotating rail 2 and extends from just below one end of the short rail 2B to approximately 135 ° just below the stopper 2C. Here, among the spring holding portions 4 described above, a long one (shown by a cross hatch in FIG. 2) located at a position 45 ° to the left with respect to the vertical rail receiver is engaged with the guide groove 2E, and as a result, The rotation rail 2 can rotate forward and backward within a range of 135 ° clockwise from the position connected to the vertical rail in FIG.

The rotating rail 2 is held between the rear surface and the bottom of the main body via a spring 12 (FIG. 1).
(B)). The spring 12 is inscribed in a spring holding portion 4 projecting from the bottom of the main body, and supports the rotating rail 2 by its elastic force. As a result, although the rotating rail 2 is lifted, the rotating rail 2 comes into contact with the rotating rail retainer 5 projecting from the inner periphery of the main body and is held in the main body.

When the rotating rail 2 is actually rotated, the rotating rail is slightly pressed down against the spring 12, the fitting between the rotating rail retainer 5 and the positioning recess 2D is released, and the rotating rail retainer is rotated again at a predetermined position. 5 and the positioning recess 2D may be fitted. Here, when the rotating rail is pushed down,
Each spring holding portion contacts the bottom surface of the rotating rail and also serves to prevent sinking. In this way, in the direction change device of the present invention,
Since the rotating rail 2 can be rotated without using a rotating shaft, the problem that the rotating rail cannot be rotated due to rust or loss of grease oil can be solved.

Reference numeral 13 in FIG. 1 (C) denotes a stopper. This is an L-shaped fitting in which a substantially rectangular parallelepiped member 13B is welded at a right angle to a thin rectangular plate 13A as shown in FIG.
As shown in FIG. 5, an oblong slot 13C is formed in a rectangular plate (a hatched portion in FIG. 5 is a welded portion). As shown in FIG. 1 (A), this retaining bracket is 135 ° right from the vertical rail receiver.
Screw part of the rotary rail holder 5 at the position
C and attached to the outer periphery of the main body 1. It is mounted so that it can be freely rotated by adjusting the tightening of the grooved nut 7. Normally, the rectangular plate 13A is turned upward, and this is projected to a height almost equal to the high portion of the outer peripheral wall of the main body to rotate. The safety device transferred to the rail 2 is prevented from falling off.

When the safety device is removed from the direction changer, the safety device is moved to the rotating rail 2 and is turned 135 ° clockwise from the position shown in FIG. At this time, since the short rail 2B faces the direction of the retaining bracket 13, if the bracket is rotated so that the rectangular parallelepiped member 13B faces upward, the rectangular parallelepiped member 13B is positioned slightly lower than the high portion of the outer peripheral wall of the main body. The vessel can be removed. When installing a safety device, on the contrary, open the rotating rail with the rectangular parallelepiped part 13B of the retaining bracket facing up, then fit the safety device on the rotating rail, and release the retaining bracket to release the rectangular parallelepiped. The retainer rotates due to the weight of the member 13B, and the slot 13C
To return to the position where the rectangular plate 13A shields the rotating rail.

[0018]

As described above, according to the directional change device of the present invention, since the rotating rail can be rotated without using the rotating shaft, the rotation becomes difficult due to rust and loss of grease oil. Can be prevented. In particular, it can be effectively used in a seaside area where rusting is likely to occur.

[Brief description of the drawings]

1A and 1B show a direction change device of the present invention, wherein FIG. 1A is a plan view, FIG. 1B is a sectional view taken along line BB in FIG. 1A, and FIG.

FIG. 2 is a plan view showing a main body of the diverter according to the present invention;

FIG. 3 is a view showing the direction changer of the present invention, as viewed in the direction of arrow A in FIG. 1 (A).

FIG. 4 shows a rotating rail of the diverter of the present invention;
(A) is a plan view and (B) is a side view.

FIG. 5 is a front view of the retaining fitting used in the direction change device of the present invention.

6A and 6B show a conventional direction changer, where FIG. 6A is a plan view and FIG. 6B is a side view.

[Explanation of symbols]

1 Body 1A Circular container 1B Vertical rail holder 1C Horizontal rail holder 2 Rotating rail 2A Circular board 2B Short rail 2C Stopper 2D Positioning recess 2E Guide groove 3 Drain hole 4
Spring holder 5 Rotating rail holder 6 Mounting hole 7 Grooved nut 8 Rail clamp 9 Bolt 10 Groove 11 Misoperation prevention plate 12 Spring 13 Retainer 13A Rectangular plate 13B Rectangular body 13C Slot 20 Main body 21
Lift rail holder 22 Horizontal rail holder 23 Rotating rail 24 Short rail
25 Stopper 26 Rotary shaft 27 Retaining

Claims (3)

(57) [Scope of request for utility model registration] 1. A direction changer for a fall prevention device rail comprising a circular container-shaped main body and a rotating rail rotating inside the main body at an orthogonal portion of the rail, wherein the rotating rail is a circular shape substantially inscribed in the main body. A short rail and a stopper are juxtaposed on the substrate, and a plurality of positioning recesses are formed on the surface of the substrate. A rotating rail holder corresponding to the positioning recess is projected on the inner peripheral surface, and a rotating shaft for rotatably connecting the rotating rail to the main body is provided.
A rail direction changer for a fall prevention device, characterized in that it does not have it. 2. The circular substrate according to claim 1, wherein a guide groove is formed in the back surface of the circular substrate in an arc shape and concentric with the substrate, and a guide for engaging with the guide groove is provided at the bottom of the main body. Rail direction changer for fall prevention device. 3. A notch is provided in the peripheral wall of the main body so that the height of the peripheral wall is reduced.
Forming a low point, A retaining hole with a long hole in the peripheral wall of the body with this notch
With metal fittings, By sliding this stopper in the range of the long hole,
The height of the notch is changed, and the fall prevention device is mounted on the short rail.
2. The device according to claim 1, wherein the device is detachable.
A direction change device for a rail for a fall prevention device as described in the above.