JP2000217941A - Direction changing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a direction changing device for a rail for a falling preventive cutout of a steel tower that can ease a movement of a worker by unifying an install direction of a rail of a vertical direction and arranging a rail of a horizontal direction so as not to be separated from a steel tower main (arm) material. SOLUTION: A direction changing device that moves a cutout 5 that moves along vertical rails 1U, 1L or horizontal rails 2L, 2R which are crossed each other between the both rails 1U, 1L, 2L and 2R. A revolving rail 4 is installed at a crossing parts of the both rails 1U, 1L, 2L and 2R then two kinds of revolving mechanisms are given to the revolving rail 4. One is a revolving mechanism that sets a shaft which is vertical to an engaging face of the vertical rails 1U, 1L as a revolving shaft and the other is a revolving mechanism that sets a shaft which is horizontal to a longitudinal direction of the vertical rails 1U, 1L as a revolving shaft.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a direction changer used for a rail or the like for attaching a fall prevention safety device at the time of elevating a tower.

[0002]

2. Description of the Related Art A steel tower is provided with rails for a fall prevention safety device. A safety device is fitted to this rail, and the safety device is connected to a belt worn by the worker on the waist via a rope or the like. Should the worker fall, the safety device would bite into the rails, suspending the worker in the air and preventing the fall.

By the way, such rails include not only vertical rails provided on a tower main member but also horizontal rails provided on a tower arm member. Therefore, a diverter is required to transfer the safety device between the vertical rail and the horizontal rail. Conventionally, a two-stage turning type shown in FIG. 9 has been used for this direction change.

A lower vertical rail 40 and an upper vertical rail 41 are fixed to the main tower, and a rotary transition rail 42 having a vertical axis as a rotation axis is interposed between the two rails. On the other hand, horizontal rails 43 provided along the tower arm,
44 is provided intersecting with the vertical rail 41, at the intersection of which there is provided a diverter having a rotating rail 45. In addition, it is provided on both sides of the tower main material 50 so as to protrude.
The step bolt 46 serves as a foothold when the worker goes up and down.

[0005] Here, the lower vertical rail 40 and the upper vertical rail 41 are mounted such that the engagement surfaces 40A, 41A on which the safety device 47 is fitted are displaced. Although the reason for this will be described later, when the worker ascends the tower, first, the safety device 47 is moved to the transition rail 42 by aligning the engagement surface of the transition rail 42 with the engagement surface of the lower vertical rail 40. In this state, the transition rail 42 is rotated to match the engagement surface 42A of the transition rail 42 with the engagement surface 41A of the lower vertical rail 41. Next, the safety device 47 is transferred to the upper vertical rail 41, and the safety device 47 is fitted to the rotating rail 45 of the direction changer. The rotating rail 45 in the figure is aligned in the horizontal rail direction.
When the safety device 47 is shifted to the next position, the rotating rail 45 is aligned in the upper vertical rail direction in advance. And safety device 47
The rotating rail 45 in a state where it is fitted is rotated to align in the horizontal rail direction, and the safety device 47 is shifted to the horizontal rail 43.
That is, in the conventional direction changer, the direction of the safety device 47 is changed in two stages using two types of direction change mechanisms, namely, the transition rail 42 and the rotating rail 45.

[0006]

As described above, the lower vertical rail and the upper vertical rail are mounted so that the engaging surfaces of the safety devices are displaced, and the main member of the vertical tower and the horizontal arm member are provided. The rail is fixed in the direction of the upper vertical rail 41 only near the intersection with the lower vertical rail.
The rail is fixed in the 40 direction. The reason is as follows.

FIG. 10 (A) shows the state of attachment of the lower vertical rail as viewed from above the tower. The lower vertical rail 40 is the main tower material
It is provided to protrude in 50 diagonal directions. This is because the lower vertical rail 40 is positioned at the center with respect to the step bolts 46 projecting from both sides of the main
Even if it falls down and is suspended by a safety device, the worker is swung in the horizontal direction and the tower main material
This is to prevent hitting the 50. on the other hand,
If it is attempted to connect the horizontal rails 43 and 44 to the lower vertical rail 40, in order to shift the safety device, the engaging surfaces of the lower vertical rail 40 and the horizontal rails 43 and 44 must be on the same plane. Therefore, as shown by the broken line in FIG. 10A, the horizontal rails 43 and 44 must be bent very sharply. As a result, the safety device cannot be slid smoothly at the bent portions 51 of the horizontal rails 43, 44. In addition, the bent portion 51 is largely separated from the tower main material 52. The worker
With the horizontal rails 43 and 44 located at the height around the waist,
Although the tower main member 52 is used as a scaffold, the bent portion 51 of the horizontal rail does not overlap with the tower main member 52, and therefore, there is a problem that it is necessary to move in a tilted and unreasonable posture.

Next, FIG. 10B shows the state of attachment of the upper vertical rail 41 as viewed from above the tower. The upper vertical rail 41 is provided so as to protrude from the front of the tower main member 50. If the rails provided along the main tower in the vertical direction are all installed in the same direction as the upper vertical rail 41, if the worker falls down and is suspended in the safety device, the worker will move in the horizontal direction. And may be struck by the main tower 50. On the other hand, if the horizontal rails 43 and 44 are to be connected to the upper vertical rail 41, the bent portions 53 of the horizontal rails 43 and 44 can be bent quite gently as shown by the broken lines in FIG.
The distance from the arm member 54 can also be reduced.

As described above, the vertical rails are installed in two types, the lower vertical rail and the upper vertical rail.
There is still the problem that the two-step turning by 45 is necessary and it is difficult for workers to move along the bent part of the horizontal rail.

Conversely, if all the vertical rails are installed in one of the upper and lower vertical rails, the transition rail is not necessary, but the safety surface in the case of a fall and the point of smooth sliding of the safety device are reduced. Is not enough.

Accordingly, a main object of the present invention is to provide a directional changer as described below. Unify the vertical rail installation direction and eliminate the need for transition rails. Minimize the bending rate of the horizontal rail to make the safety device slide smoothly. The horizontal rails are arranged so as not to be separated from the tower main (arm) material to facilitate the movement of workers.

[0012]

SUMMARY OF THE INVENTION The diverter according to the present invention is characterized in that a rotary rail is provided with two types of rotary mechanisms so that a slider can be moved between rails having intersecting and non-coplanar engaging surfaces. It is designed to be able to move with each other.

That is, the direction changer according to the present invention is a direction changer for moving a slider moving along one of the first rail and the second rail crossing each other between the two rails. A rotating rail is provided at the intersection of the first rail and the second rail. Each of the first rail and the second rail has an engagement surface with which the slider engages, and at least one of the second rails located on both sides of the rotating rail has an engagement surface of the first rail. The plane is located on a non-coplanar plane. Further, the rotating rail has an engaging surface with which the slider engages, a rotating mechanism having a rotating axis perpendicular to the engaging surface of the first rail, and a rotating shaft having an axis parallel to the longitudinal direction of the first rail. And a rotating mechanism. The two rotating mechanisms are configured so that the engaging surface of the rotating rail can be aligned with the engaging surface of the first rail or the engaging surface of the second rail.

Here, it is preferable that at least one of the second rails located on both sides of the rotating rail has an angle adjusting mechanism for changing an angle of intersection with the first rail. Thereby, the direction change device of the present invention can be used for various towers having different angles between the tower main member and the tower arm member.

It is preferable that a positioning projection is provided on the engaging surface of the rotating rail so as to be held on the same surface as the engaging surface of the first rail or the second rail. Thereby, the engaging surface of the rotating rail is easily aligned with the engaging surface of either the first rail or the second rail.

Further, a stopper may be provided so that the slider does not fall off the rotating rail even when the slider is rotated in any direction with the slider engaged with the rotating rail. This is to prevent the safety device from falling off during the operation of the rotating rail and exposing the worker to a danger of falling.

It is desirable to provide a pair of stoppers at positions orthogonal to the rotating rail so that other sliders engaged with the first rail or the second rail do not fall off. This is to ensure the safety of a worker different from the worker using the rotating rail.

[0018]

Embodiments of the present invention will be described below. Here, a case where the direction changer of the present invention is used for a rail for a fall prevention safety device provided along a steel tower, and a case where an ascending worker shifts from a vertical rail to a horizontal rail will be described as an example. In the following description, the vertical rail provided on the vertical tower main material is referred to as the `` first rail, '' and the horizontal rail provided on the horizontal tower main material or the tower arm material is referred to as the `` second rail. '' The container corresponds to the “slider”.

<Outline: FIGS. 1 to 3> The diverter according to the present invention comprises a main body 3 provided at the intersection of vertical rails 1U, 1L and horizontal rails 2L, 2R, and a rotating rail 4 rotating within the main body. Equipped. The vertical rails 1U and 1L are provided along the main tower material in the vertical direction, the horizontal rail 2L is provided along the main tower material in the horizontal direction, and the horizontal rail 2R is provided along the tower arm material. The worker who ascends moves the safety device 5 from the vertical rail 1L to the rotating rail 4 that is oriented vertically (FIG. 1). In this state, the rotating rail 4 is rotated so as to face the horizontal direction (FIG. 2). Further, the rotating rail 4 is rotated so that the engaging surface of the rotating rail 4 is located on the same plane as the engaging surface of the horizontal rail 2L (FIG. 3). Then, the safety device is shifted to the horizontal rail 2L. Thus, by providing two types of rotating mechanisms on the rotating rail 4, the vertical rail 1U,
The safety device 5 can be shifted between non-coplanar engaging surfaces, ie, the 1L engaging surface and the horizontal rail 2L engaging surface.

<Details of Configuration> FIG. 4 is a front view of the direction changer of the present invention, FIG. 5 is a plan view thereof, and FIG. 6 is a right side view thereof.

(Main Body) As shown in FIGS. 4 to 6, the main body 3 has a bottom surface and is in the shape of a cylindrical container having an open top.
As shown in FIG. 1, a portion of the main body peripheral wall facing the horizontal rail 2L is cut out to facilitate rotation of the rotating rail 4. On the outer periphery of the main body 3, as shown in FIG.
Rail holders 6U, 6
L, 7L, 7R are attached.

(Rail holder) Each rail holder 6U, 6L, 7
L and 7R are fixed across the vertical or horizontal rails 1U, 1L, 2L and 2R. 1 to 3 show all the rails, FIG. 4 omits the rails, and FIG. 5 shows the horizontal rails by two-dot chain lines.
2L and 2R, and the vertical rails 1U and 1L are shown by two-dot chain lines in FIG. As shown in FIGS. 5 and 6, each rail holder 6U, 6L, 7L, 7R has a recess 8 having a triangular cross section inside a quadrangular prism.
Are formed in the axial direction, and vertical or horizontal rails 1U, 1L, 2L, 2R are fitted into the recesses 8 and tightened with bolts 9 and nuts 10 (FIG. 4) to fix the rails 1U, 1L, 2L, 2R. .

Each of the rail holders 6U, 6L, 7L, 7R is attached so as to extend in all directions of the main body at 90 ° intervals when the direction changer is viewed from the front (FIG. 4). On the other hand, when the direction changer is viewed from above (FIG. 5), the rail holder 7L is not orthogonal to the rotation axis (horizontal axis 20) of the rotating rail described later and is fixed to the main body 3 at an angle of approximately 45 °. Have been. This is the vertical rail 1U, 1L diagonally to the vertical tower main material
This is because when the rail holder 7L is provided so as to protrude, the rail holder 7L is along the main member of the steel tower in the horizontal direction. Further, the rail holder 7R is configured so that the mounting angle can be changed within a predetermined range with respect to the rotation axis (horizontal axis 20) of the rotation rail 4. This is so that the diverter of the present invention can be mounted in accordance with the mounting angle of the arm member with respect to the main tower in the vertical direction.

The rotation mechanism of the rail holder 7L is such that a connecting plate 16 integral with the rail holder 7R is supported by a supporting plate 15 integral with the main body 3.
Are slidable (FIGS. 5 and 6).
The support plate 15 is formed with a circular bolt hole, and a connecting plate 16 is stacked on the support plate 15. The connecting plate 16 has an arc-shaped long hole 17 formed therein. The bolt holes of the support plate 15 and the elongated holes 17 of the connecting plate 16 are penetrated by bolts 18, and the connecting plate 16 is slid within the range of the elongated holes 17 to rotate the rail holder 7R. The positioning of the rail holder 7R is performed by tightening a nut 19 to a bolt 18 passing through the support plate 15 and the connecting plate 16. In this example, the configuration is such that the angle of the rail holder 7R can be adjusted within a range of 30 °. If the angle adjustment of the rail holder 7R is performed once when the diverter of the present invention is installed on a steel tower, it is not necessary to perform the adjustment again later.

(Rail) Vertical and horizontal rails 1U, 1L, 2
L and 2R have an I-shaped cross section as shown in FIGS. Engagement surface 1U-1,1L-1,2L-1,2R-1 and mounting surface 1U-2,1L-2,
2L-2, 2R-2 is parallel and the connecting surface 1U-
Connected by 3,1L-3,2L-3,2R-3. Rail holder 6U, 6
The mounting surface side is inserted into L, 7L, 7R, and the safety device 5
Are engaged. In the case of this example, the respective engaging surfaces 1U-1 and 1L-1 of the vertical rail 1U and the vertical rail 1L are located on the same plane, but the respective engaging surfaces 2L-1 and 2L-1 of the horizontal rail 2L and the horizontal rail 2R. 2R-1
Are not on the same plane with each other, and the engaging surfaces 1U-1, 1L-1 of the two vertical rails 1U, 1L are not on the same plane. The safety device is
When the worker falls, the lever is stopped by the action of a lever that applies a shearing force to the engagement surface from both sides.

(Rotating Rail) A rotating rail 4 is housed inside the main body 3. The internal structure of the main body 3 will be described with reference to FIGS. 7 is a sectional view taken along the line AA in FIG. 4, and FIG. 8 is a sectional view taken along the line BB in FIG. The rotating rail includes an engagement surface 4A, a pedestal 4B, and a stopper 4C. The engagement surface 4A is where the safety device 5 is engaged, and the base 4B is the main body 3 and the horizontal axis 20 (rotary axis).
It is the place which is connected with. The pedestal 4B is a disk-shaped member that is in contact with the bottom surface of the main body 3, and is penetrated by the horizontal axis 20 together with the bottom surface of the main body 3. A bolt is used for the abscissa 20, and it is fixed by tightening with a nut 21 from the outside of the bottom surface of the main body. Thereby, the pedestal 4B can be rotated inside the main body. This rotation is at least approximately 90 ° from a position where the longitudinal direction of the rotating rail 4 is along the vertical rail direction to a position along the horizontal rail. This rotation mechanism corresponds to a “rotation mechanism having an axis perpendicular to the engagement surface of the first rail as a rotation axis”.

A pair of connecting pieces 4 is provided at the center of the base 4B.
D is protruding. On the other hand, a projection 4E is provided on the back surface of the engagement surface 4A.
The projection 4E is sandwiched between a pair of connection pieces 4D, and the projection 4E and the connection piece 4D penetrate through the vertical axis 22 (rotation axis), and the engagement surface 4A with respect to the pedestal 4B. It was configured to be able to rotate. In this example, the engagement surface 4A can be rotated with respect to the pedestal 4B within a range of 45 ° by using the plunger 23. That is, as shown in FIGS. 7 and 8, the plunger 23 penetrates one connecting piece 4D, and the tip of the plunger 23 is
The rotation angle of the engagement surface 4A can be held at a predetermined position by being stuck in. This rotation mechanism corresponds to a “rotation mechanism having a rotation axis that is an axis parallel to the longitudinal direction of the first rail”.

Further, on the engaging surface 4A of the rotating rail, there is provided a positioning projection 25 which is held on the same plane as the engaging surface 1U-1, 1L-1, 2L-1, 2R-1 of the vertical or horizontal rail. (Figure 1
~ FIG. 4). This is a ridge formed on the engaging surface of the rotating rail 4, and also projects at both ends of the rotating rail 4. As shown in FIG. 3, the rotation of the rotating rail 4 about the vertical axis 22 as a rotation axis is restricted by the positioning projection 25 abutting on the engaging surface of the rail to be moved, and the moving with the rotating rail 4 will be performed. Are held on the same surface.

(Stopper) A pair of stoppers 4C are provided so as to sandwich the engagement surface of the rotating rail 4 (FIG. 7). The stopper 4C is a plate-like body protruding from the periphery of the pedestal 4B in the direction of the engaging surface of the rotating rail 4. This stopper 4C
Among the vertical or horizontal rails, this is for ensuring the safety of workers who work on rails that intersect with the rotating rail 4. For example, as shown in FIG. 2, when the rotating rail 4 is oriented along the horizontal rails 2L and 2R, the horizontal rail 2
Even if there is another worker on the extension of L and 2R, the ends of the horizontal rails 2L and 2R are cut off by the rotating rail 4, so that there is no safety problem. However, at this time, there is another worker on the extension of the vertical rail 1U, and if there is no stopper 4C, when the other worker falls, the safety device 5 is moved from between the end of the vertical rail 1U and the rotating rail 4. May fall off. The stopper 4C is provided at a position where the end of the rail intersecting with the rotating rail 4 is shut off so that such an accident does not occur.

(Retaining) Then, as shown in FIG.
A mounting plate 30 is fixed to the left and right rail holders.
A wedge-shaped retainer 31 is fixed to a bolt 30 by a bolt 32. This is to prevent the safety device 5 from falling off from both ends of the rotating rail 4 irrespective of the direction of the rotating rail 4, and to secure the safety of the worker who intends to move using the rotating rail 4. . A long hole 33 is formed in the mounting plate 30 (FIG. 4), and if the tightening position of the bolt 32 is moved within the range of the long hole 33, the stopper 31 can be fixed at an optimum position.
In addition, as shown in FIG. 4, the retainer 31 may be fixed directly on the rail holders 7L and 7R with bolts 9. The shape of the retainer 31 is not limited to the wedge shape as in this example.

(Function and Effect) In such a direction changer, the rotating rail has two types of rotating mechanisms having the horizontal axis 20 and the vertical axis 22 as rotating axes, so that the engaging surfaces are on the same plane. Not allow for the transition of safety devices between rails. of course,
To shift to the right horizontal rail, from the state of FIG. 2, rotate the rotating rail toward the right rail with the vertical axis as the rotation axis, and align the engaging surface of the rotating rail and the engaging surface of the right rail on the same plane. Just slide the safety device after positioning.

As described above, since the engaging surface of the vertical rail does not have to be located on the same plane as the engaging surface of the horizontal rail,
The direction of the vertical rail of the tower can be unified to the direction shown in Fig. 10 (A). Therefore, the conventional transition rail is not required.

Further, since the engaging surfaces of the vertical rails do not have to be located on the same plane as the engaging surfaces of the horizontal rails, each horizontal rail can be made to follow the main member or arm member in the horizontal direction. It is not necessary to form a bent portion on the rail. Therefore, the worker can easily move along the rails, and the safety device can slide more smoothly.

(Other Modifications) In the above example, the left rail holder is fixed and the right rail holder is rotary, but both rail holders may be rotary. Further, the present invention can be applied to other technical fields in which the same function is required even if it is not a rail of a fall prevention safety device in a steel tower.

[0035]

As described above, according to the direction changer of the present invention, the rotating rail is provided with two rotating mechanisms so that the engaging surface of the vertical rail is flush with the engaging surface of the horizontal rail. It does not have to be located at Therefore, the direction of the first rail can be unified, and there is no need to use the transition rail used conventionally.

Further, each of the horizontal rails can be made to follow the main member or the arm member in the horizontal direction, and it is not necessary to form a bent portion on the rail. Therefore, the worker can easily move along the rails, and the safety device can slide more smoothly.

[Brief description of the drawings]

FIG. 1 is a perspective view of a direction changer of the present invention in a state where a rotating rail is directed along a vertical rail.

FIG. 2 is a perspective view showing a state in which a rotating rail is rotated in a direction orthogonal to a vertical rail in the direction changer of the present invention.

FIG. 3 is a perspective view of the direction changer of the present invention in a state where an engagement surface of a rotating rail is matched with an engagement surface of a horizontal rail.

FIG. 4 is a front view of the direction change device of the present invention.

FIG. 5 is a plan view of the direction changer of the present invention.

FIG. 6 is a right side view of the direction change device of the present invention.

FIG. 7 is a sectional view taken along the line AA in FIG. 4;

FIG. 8 is a sectional view taken along the line BB in FIG. 4;

FIG. 9 is a perspective view showing a conventional direction changer.

FIG. 10 is an explanatory view showing the installation direction of a conventional vertical rail.

[Explanation of symbols]

1U, 1L Vertical rail 2L, 2R Horizontal rail 3 Body 4
Rotary rail 4A Engagement surface 4B Base 4C Stopper 4D Connection piece 4E
Projection piece 5 Safety device 6U, 6L, 7L, 7R Rail holder 8 Recess
9 Bolt 10 Nut 15 Support plate 16 Connecting plate 17 Slot 18
Bolt 19 Nut 20 Horizontal axis 21 Nut 22 Vertical axis 23 Plunger 24
Recess 25 Positioning protrusion 30 Mounting plate 31 Retainer 32 Bolt 33 Elongated hole 40 Lower vertical rail 41 Upper vertical rail 42 Transition rail 43, 44 Horizontal rail 45 Rotation rail 46 Step bolt 47 Safety device 50 Steel tower main material 51 Bend 52 Steel tower main Material 53 Bend
54 Arm material

Claims (5)

[Claims] 1. A direction changer for moving a slider moving along one of a first rail and a second rail crossing each other between the two rails, wherein the first rail and the second rail cross each other. A rotary rail is provided at a location, each of the first rail and the second rail has an engagement surface with which a slider engages, and at least one of the second rails located on both sides of the rotary rail The engaging surface of the rotating rail is located on a non-coplanar surface with the engaging surface of the first rail, and the rotating rail rotates an axis perpendicular to the engaging surface of the first rail and the engaging surface with which the slider engages. A rotating mechanism having an axis parallel to the longitudinal direction of the first rail and a rotating mechanism having a rotating axis as an axis, wherein an engaging surface of the rotating rail is an engaging surface of the first rail or an engaging surface of the second rail. Characterized by being configured so that they can be aligned on the same plane as Diverter. 2. The apparatus according to claim 1, wherein at least one of the second rails located on both sides of the rotating rail includes an angle adjusting mechanism for changing an angle of intersection with the first rail. Direction changer. 3. The direction according to claim 1, wherein the engaging surface of the rotating rail is provided with a positioning protrusion which is held on the same surface as the engaging surface of the first rail or the second rail. Convertor. 4. The direction changing device according to claim 1, wherein a stopper is provided to prevent the slider from falling off from the rotating rail when the slider is rotated in any direction in a state where the slider is engaged with the rotating rail. vessel. 5. The direction according to claim 1, wherein a pair of stoppers is provided at a position orthogonal to the rotating rail so that another slider engaged with the first rail or the second rail does not fall off. Convertor.