JPH0739854U - Rail turners for fall arrest devices - Google Patents

Abstract

(57) [Abstract] [Purpose] In a rail direction changer for a fall prevention device used in steel tower work, etc., prevent rotation failure of the rotating rail due to rust or the like. A rail direction changer for a crash prevention device, comprising a circular container-shaped main body 1 and a rotating rail 2 that rotates inside thereof in an orthogonal portion of the rail, the rotating rail 2 being substantially inscribed in the main body 1. Short rails 2B and stoppers 2C are juxtaposed on a circular substrate in parallel, and a plurality of positioning recesses 2D are formed on the surface of the substrate. A spring 12 is held between the bottom of the main body and the body. Then, a rotary rail retainer 5 corresponding to the positioning recess 2D is provided inside the main body 1 so as to project therefrom. Since there is no rotating shaft, it is possible to prevent rot and other defective rotation.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rail direction changer for a fall prevention device used in work at high places such as a transmission line tower.

[0002]

[Problems to be solved by conventional techniques and devices]

 In order to prevent workers from falling accidents in power transmission and distribution towers, a safety device is fitted to a guide rail attached along the tower, and this is connected to a safety belt worn by the worker's waist to perform work in high places. Is going. There are generally such guide rails for lifting and horizontal movement, but when transferring the safety device from one to the other, a direction changer is required, one of which is shown in Fig. 6. ing. This is provided with a rotating rail 23 in a circular container-shaped main body 20 at a portion orthogonal to the lifting rail receiver 21 and the horizontal rail receiver 22. The rotating rail 23 has short rails 24 projecting on a circular substrate, stoppers 25 projecting parallel to the short rails on both sides of the circular rails, and are pivotally supported by a rotating shaft 26 concentrically with the main body. In the figure, 27 is a retainer. In use, rails connected to the rotating rails are fixed to each rail receiver, but this is omitted in the figure.

For example, when the fall prevention device is moved from the horizontal rail to the elevating rail (both are not shown), the rotary rail 23 is directed toward the horizontal rail receiver 22 as shown in the figure, and the safety device (see After sliding (not shown) on the rotary rail 23, the rotary rail 23 is rotated toward the lift rail receiver 21 to transfer the safety device to the lift rail. At this time, the rail that is not connected to the rotary rail 23 among the vertical and horizontal rails is opened in the body 20 of the direction changer, and other workers are at risk of falling. To do. By the way, in such a direction changer, the rotary shaft 26 is used as the rotary rail, and grease is applied to the bearings of the rotary shaft 26 and the rotary rail 23 to ensure lubrication, but the rotary converter itself is always exposed outdoors. Therefore, there was a problem that rotation became difficult due to rusting and weathering of grease oil.

[0004]

[Means for Solving the Problems]

 The present invention has been made to solve such a problem, and is to rotate a rotating rail without using a rotating shaft. Its characteristic is a rail deflector for a fall prevention device that has a circular container-shaped main body in the orthogonal part of the rail and a rotating rail that rotates inside it, and the rotating rail is above the circular substrate that is almost inscribed in the main body. Short rails and stoppers are juxtaposed in parallel with each other, and a plurality of positioning recesses are formed on the surface of the substrate. An elastic body is held between the bottom of the main body and the inner peripheral surface of the main body. The rotary rail retainer corresponding to the positioning recess is provided on the projection.

Here, a spring is preferable as the elastic body, and a plurality of spring holding portions may be provided at the bottom of the main body so that the springs are inscribed and held therein. At this time, it is preferable that an arc-shaped guide groove is formed on the back surface of the circular base plate and is concentric with the substrate, and one of the spring holding portions is lengthened to serve as a guide that engages with the guide groove. Is.

[0006]

【Example】

 Embodiments of the present invention will be described below. As shown in FIG. 1, the turning device according to the present invention comprises a circular container-shaped main body 1 and a rotating rail 2 which rotates inside the main body 1 at the orthogonal portion between the elevating rail and the horizontal rail. First, as shown in FIG. 2, the main body 1 is integrally formed with rail receivers (vertical rail receivers 1B, horizontal rail receivers 1C) extending from a circular container 1A at right angles to each other. A water drainage hole 3 is formed in the center of the bottom of the circular container 1A, and four spring retaining portions 4 are arranged in a substantially square shape and project around the water drainage hole 3. The spring holding portion 4 is a short rod-shaped member, and as will be described later, only one of them is slightly long, and this serves as a guide that engages with the rotary rail.

[0007] Furthermore, the peripheral wall of the main body is provided with mounting holes 6 for the rotating rail retainer 5 at four positions on the left and right 45 ° lines with respect to the vertical rail receiver 1B. As shown in FIG. 1 (A), the rotary rail retainer 5 is a bolt having a cylindrical head. A screw portion is fitted into the mounting hole 6 from the inside of the main body, and is fixed with a grooved nut 7 from the outside. This peripheral wall does not have a uniform height, and the joints of the vertical and horizontal rail receivers are low, and the vertical rail receivers are located from about 45 ° to the right of the vertical rail receivers to the position facing the horizontal rail receivers. On the other hand, the height from around 135 ° to the left to the position facing the vertical rail receiver is high, and this raised position serves as a stopper for the safety device. The low-formed areas are indicated by the diagonal lines rising to the left, and the high-formed areas are indicated by the diagonal lines rising to the right.

As shown in FIG. 3, each rail receiver is internally provided with a rail clamp 8 having two metal fittings opposed to each other and symmetrical with each other, and having an upper opening, and is fixed by a bolt 9. Although only the rotary rail 2 is shown in the figure, the rail (not shown) is actually held in the groove 10 formed between the rail clamps 8 to be continuous with the rotary rail 2.

An erroneous operation prevention plate 11 is fixed to the outside of the rail receiver by the bolt 9 described above. This is to prevent the wrong orientation of the safety device (not shown) when it is fitted to the rail, and when fitted in the proper direction, it can be fitted without any problems. , In the opposite direction, the projection provided on the safety device comes into contact with the prevention plate 11 to serve as a fitting barrier.

On the other hand, as shown in FIG. 4, the rotary rail 2 is formed by projecting a short rail 2B and a stopper 2C on a circular substrate 2A which is almost 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 approximately equal to the diameter of the substrate 2A, and is continuous with a vertical rail or a horizontal rail by the rotation of the substrate 2A.

Further, the stopper 2C is a rectangular plate welded in parallel with the short rail, and the rail that is not connected to the rotary rail 2 among the vertical and horizontal rails is opened in the main body of the direction changer. It shuts off and protects other workers from the risk of falling. In this example, the short rail 2B and the peripheral edge of the substrate are provided approximately in the middle.

[0012] A plurality of cylindrical surface-shaped positioning recesses 2D are formed on the peripheral portion of the surface of the substrate. This is to hold the rotary rail 2 in a predetermined direction by fitting it with the rotary rail retainer 5 that protrudes inward from the peripheral wall of the main body, and forms a total of 8 locations every 45 ° with the short rail 2B as the reference line. .

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

The rotary rail 2 as described above is held with a spring 12 interposed between the back surface of the rotary rail 2 and the bottom of the main body (see FIG. 1B). The spring 12 is inscribed in a spring holding portion 4 projecting from the bottom of the main body, and supports the rotary rail 2 by its elastic force. As a result, the rotary rail 2 is lifted, but it comes into contact with the rotary rail retainer 5 projectingly provided on the inner circumference of the main body and is held in the main body.

When actually rotating the rotary rail 2, the rotary rail is slightly pushed down against the spring 12 to release the fitting between the rotary rail retainer 5 and the positioning recess 2D, and then the rotary rail retainer 5 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 comes into contact with the bottom surface of the rotating rail and also serves as a sinking stopper. As described above, in the direction changer of the present invention, since the rotary rail 2 can be rotated without using the rotary shaft, it is possible to solve the problem that the rotary rail cannot be rotated due to rusting or loss of grease oil.

Reference numeral 13 in FIG. 1C is a retaining metal fitting. This is an L-shaped metal fitting in which a substantially rectangular parallelepiped member 13B is welded at a right angle to a thin rectangular plate 13A as shown in the same figure, and an elongated hole 13C inclined to the rectangular plate is formed as shown in FIG. 5 ( The shaded area in Fig. 5 is the weld). As shown in FIG. 1 (A), this retaining metal fitting is attached to the outer periphery of the main body 1 by penetrating the threaded portion of the rotary rail retainer 5 located at a position 135 ° to the right from the vertical rail receiver through the elongated hole 13C. is there. It is mounted so that it can be rotated freely by adjusting the tightening of the grooved nut 7. Normally, the rectangular plate 13A faces upward, and this is projected to a height almost equal to the height of the outer peripheral wall of the main body for rotation. It is used as a retainer for the safety device that was moved to rail 2.

When the safety device is removed from the direction changer, the safety device is moved to the rotary rail 2 and rotated 135 ° to the right from the position shown in FIG. 1 (A). At that time, the short rail 2B faces the retaining metal fitting 13, so if you rotate the metal fitting to turn the rectangular parallelepiped member 13B upward, the rectangular parallelepiped member 13B will be positioned slightly lower than the upper part of the outer peripheral wall of the main body. The safety device can be removed. On the contrary, when attaching a safety device, open the rotating rail with the rectangular parallelepiped part 13B of the retaining metal fitting facing up, then fit the safety device on the rotating rail and release the retaining metal fitting. Then, the retainer fitting rotates due to the weight of the rectangular parallelepiped member 13B, slides through the elongated hole 13C, and returns to the position where the rectangular plate 13A shields the rotating rail.

[0018]

[Effect of device]

 As described above, according to the direction changer of the present invention, since the rotary rail can be rotated without using the rotary shaft, it is possible to prevent the rotation from becoming difficult due to rusting or loss of grease oil. In particular, it can be effectively used in coastal areas where rust is likely to occur.

[Brief description of drawings]

1 is a plan view of the present invention, FIG. 1A is a plan view, FIG. 1B is a sectional view taken along line BB in FIG.

FIG. 2 is a plan view showing a main body of the redirector of the present invention.

3 is a view showing a direction changer of the present invention, and is a view taken in the direction of arrow A in FIG.

FIG. 4 is a view showing a turning rail of the turning device of the present invention,
(A) is a plan view and (B) is a side view.

FIG. 5 is a front view of a retainer used in the turning device of the present invention.

FIG. 6 shows a conventional direction changer, in which (A) is a plan view and (B) is a side view.

[Explanation of symbols]

1 Main body 1A Circular container 1B Vertical rail receiver 1C Horizontal rail receiver 2 Rotating rail 2A Circular substrate 2B Short rail 2C Stopper 2D Positioning recess 2E Guide groove 3 Drain hole 4
Spring retainer 5 Rotating rail retainer 6 Mounting hole 7 Groove nut 8 Rail clamp 9 Bolt 10 Groove 11 Misoperation prevention plate 12 Spring 13 Lockout fitting 13A Rectangular plate 13B Rectangular section 13C Long hole 20 Main body 21
Lift rail receiver 22 Horizontal rail receiver 23 Rotating rail 24 Short rail
25 Stopper 26 Rotating shaft 27 Locking

Claims (2)

[Scope of utility model registration request] 1. A direction changer of a rail for a fall prevention device, comprising a circular container-shaped main body and a rotary rail that rotates inside the rail at an orthogonal portion of the rail, wherein the rotary rail is a circular shape that is substantially inscribed in the main body. Short rails and stoppers are juxtaposed on the board in parallel, and a plurality of positioning recesses are formed on the surface of the board. The body is held by an elastic body between the body and the bottom of the body. A rail deflector for a fall prevention device, characterized in that a rotation rail retainer corresponding to the positioning recess is provided on an inner peripheral surface of the rail. 2. The circular substrate is provided with a circular arc-shaped guide groove concentric with the substrate, and a guide engaging with the guide groove is projectingly provided on the bottom of the main body. Rail turner for fall prevention devices.