JPH057628A - Guide rail device for lifting towers - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a guide rail device for elevating and lowering a tower that allows a self-propelled machine to smoothly ascend and descend. [Structure] The steel tower 1 has a guide rail 3 that can guide a mooring device for preventing a fall. The guide rail 3 has a bent portion A at an intermediate portion in the height direction of the tower 1. By avoiding the bent portion A, one side portion and the other side portion of the guide rail 3 with the direction changing device 6 as a boundary are connected by a curved bypass rail 10. The bypass rail 10 and the guide rail 3 are connected via a branching device 11. The branching device 11 has a rotatable short guide rail. This short guide rail rotates and is selectively connected to either the guide rail 3 or the bypass rail 10. The short guide rail is connected to the bypass rail 10 side when passing the self-propelled machine. The self-propelled machine travels on the bypass rail 10 and smoothly moves up and down.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide rail device for raising and lowering a steel tower, and in particular, it can guide a mooring device for preventing a fall, and has a bent portion at an intermediate portion in the height direction of the steel tower. The present invention relates to a steel tower lifting guide rail device having a guide rail provided with a direction changing device that changes the direction of the mooring device.

[0002]

2. Description of the Related Art Generally, a steel tower is provided with a step bolt 2 so that an operator can move up and down as shown in FIG. 6, but in order to ensure safety, a guide rail 3 is attached to the steel tower 1 to guide the guide. Mooring device 4 on the rail 3 for crash prevention
The worker can connect the lifeline 5 attached to the body to the mooring device 4 to move up and down and work. Due to various situations of the steel tower, the guide rail 3 often has a bent portion A at the middle portion in the height direction of the steel tower 1 as shown in FIG. 7 showing a conventional tower moving guide rail device. However, in this case, the bending portion A is provided with the direction changing device 6, and by changing the direction of the mooring device 4 by this direction changing device 6, the worker can move to various working positions along the guide rail 3. I am able to move. This direction changing device 6 has a structure in which a short rail 6b having the same cross-sectional shape as the guide rail 3 is fixed to a rotatable circular base plate 6a (see FIGS. 2 and 3), and the mooring device 4 bends the bent portion A. When passing, the mooring device 4 is placed on the direction changing device 6 with the direction of the short rail 6b aligned with the direction of the guide rail 3, and then the direction of the short rail 6b is changed to aim at the mooring device 4. Move to side 3. Note that FIG.
In the figure, reference numerals 1a, 1b and 1c are transmission line arms, reference numeral 1d is an overhead ground wire arm, and reference numeral 7 is a step provided near the bent portion.

By the way, work at a high place on a steel tower is still dangerous even if the mooring device 4 for preventing a fall is used, so recently, a self-propelled machine for transporting remotely operated equipment, or a tower equipped with a television camera has been installed. Development of self-propelled machines such as transmission line monitoring robots for observing the situation of power transmission lines and surroundings is underway. In this case,
It is practiced to use the guide rails 3 for raising and lowering a steel tower of the self-propelled machine.

[0004]

However, if the guide rail 3 is straight over the entire height of the tower 1,
There is no particular problem in raising and lowering the self-propelled machine by using the guide rails, but when the self-propelled machine has a bent portion A at the middle portion in the height direction as shown in the figure, the self-propelled machine can smoothly move the bent portion A. Not easy to pass to. That is, the short rail 6b of the direction changing device 6 has an indefinite initial position in its direction because of its structure of being freely rotatable, and the short rail 6b and the guide rail 3 of the main line are not smoothly connected to each other. It is difficult to pass the self-propelled plane. Further, since the self-propelled machine is larger and heavier than the mooring machine 4, it is not easy to smoothly pass the direction changing device 6 of the bent portion A also in this respect. As mentioned above, if the guide rail 3 can be made straight over the entire length in the height direction of the tower 1, or if it can be connected by a gentle curve without bending, there will be no problem in raising or lowering the self-propelled machine, but the surrounding conditions, etc. In many cases, such a structure of the guide rail 3 cannot be adopted, and further, since the distance of the lifeline 5 extending from the mooring device 4 is limited, as shown in FIG. 7, in the vicinity of the tip of the transmission line arm 1a. In some cases, the guide rail 3 may have to be extended horizontally from the bent portion A toward the tip side of the power transmission line arm 1a for maintenance and inspection, and it is not possible to meet the requirements of only the self-propelled machine.

The present invention has been made in view of the above circumstances, and is a self-propelled not only a mooring device for preventing a fall but also a self-propelled guide rail device for raising and lowering a tower having a bent portion at an intermediate portion in the height direction of the tower. It is an object of the present invention to provide a guide rail device for elevating and lowering a steel tower that can smoothly elevate and lower the machine.

[0006]

A guide rail device for lifting a steel tower according to the present invention which solves the above problems can guide a mooring device for preventing a fall, and has a bent portion at an intermediate portion in the height direction of the steel tower. In a guide rail device for elevating and lowering a tower, which has a guide rail provided with a direction changing device for changing the direction of the mooring device at the bent portion, avoiding the bent portion and using the guide rail direction changing device as a boundary. One side portion and the other side portion are connected by a curved bypass rail, one end is rotatably connected to the guide rail on the merging side and the other end side is connected to the connecting portion between the bypass rail and the guide rail. A short guide rail for switching that can be selectively connected to the guide rail or bypass rail on the branch side, and a stopper that closes the open end of the non-selected guide rail or bypass rail. Characterized in that a branching device provided with and.

[0007]

[Operation] In the above configuration, when the self-propelled machine is raised and lowered,
Rotate the short guide rail of the branching device and connect it to the bypass rail side. The self-propelled vehicle may pass through this branching device and ride on a curved bypass rail, and may move from the lower part of the guide rail to the upper part or vice versa without passing through the turning device at the bend. it can. This makes it possible to move up and down smoothly even with a guide rail having a bent portion. Also, when a mooring device is used to move up and down, the branching device is turned to the opposite side to connect the short guide rail to the guide rail side. As a result, the mooring can be moved along the guide rail main line as usual, and can be moved between the one-side portion and the other-side portion of the guide rail, which are separated from each other by the bending direction changing device. You can

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In FIG. 1, power transmission line arms 1a, 1
A steel tower 1 having b, 1c, an overhead ground wire arm 1d, etc., has a guide rail 3 having a bent portion A in the middle of its height direction 3, a direction changing device 6 provided at this bent portion A, and the vicinity of the bent portion A. Step 7 and the like are provided. The above configuration is the same as that of the conventional example in FIG. 7, but in the present invention, the bent portion A of the guide rail 3 is avoided, and one side (upper side) of the guide rail 3 with the direction changing device 6 as a boundary is provided. The other side (lower side) portion is connected via a curved bypass rail 10, and a branching device 11 is provided at a connecting portion B between the bypass rail 10 and the guide rail 3. This branching device 11 is shown in FIG.
As shown in detail in Fig. 3, the merging side (lower side in Figs. 2 and 3)
Fan-shaped base plate 1 rotatable about a shaft 13 provided in the
4, a short guide rail 15 having the same cross-sectional shape as the three guide rails integrally fixed to the base plate 14, a longitudinal direction provided on the left and right of the branch side (upper side in FIGS. 2 and 3) end of the base plate 14. Stoppers 16, 17, these longitudinal stoppers 16, 1
7, widthwise stoppers 18, 19 and the like respectively provided on the same. In the longitudinal stoppers 16 and 17, the guide rail 3 or the bypass rail 10 is a short guide rail 1.
5 is for preventing the mooring device 4 or the self-propelled machine from derailing from the open end of the guide rail 3 or the bypass rail 10 when the guide rail 3 or the bypass rail 10 is not connected. Alternatively, it is for positioning the short guide rail 15 when selecting the bypass rail 10. Thus, the branch side of the short guide rail 15 (the shaft 13
Opposite side) to the guide rail 3 and the bypass rail 10
It can be selectively connected to either one of. The branching device 11 can be installed by notching only a part of the existing guide rail and without requiring deformation or large removal.

4 and 5 show a schematic mechanism of the self-propelled machine. In the self-propelled machine 20 of the embodiment, the guide rail 3 and the flange portion 3b of the bypass rail 10 are provided with a large number of holes 3a, 10a at equal pitches in the length direction (the bypass rail is omitted in the following description). 3a is a mechanism for moving up and down, and includes a sprocket 21 that engages with the hole 3a of the guide rail 3, and a total of four rollers 22 that contact the flange portion 3b of the guide rail 3 from the side opposite to the sprocket 21. ing. The sprocket 21 is
The bevel gears 23, 24 are driven by a drive device inside the main body of the self-propelled machine 20.
It is rotationally driven via. The steel tower structure and mooring device 4 shown in FIG. 6 are common to the present invention and the conventional example,
Further, the structure of the mooring device 4 is similar to that of the self-propelled machine 20 described above, in which the sprocket meshing with the hole 3a of the guide rail 3 and the roller provided on the opposite side are engaged with the guide rail 3. And, due to the special internal mechanism, when it is pulled upward, it rises freely, and even when it is heavily weighted downward, it descends slowly.

A description will be given of how to use the above-described guide rail device for raising and lowering a steel tower. When raising and lowering the self-propelled machine 20,
As shown in FIG. 2, the short guide rail 15 of the branching device 11
Is rotated counterclockwise about the shaft 13 until the widthwise stopper 19 hits the guide rail 3 and is connected to the bypass rail 10 side. In this state, the longitudinal stopper 17
Closes the branch-side open end of the guide rail 3 to prevent derailment of moorings and self-propelled machines coming from above. In this state, the self-propelled machine 20 travels on the short guide rail 15 connected to the bypass rail 10 side and moves from the merge side of the guide rail 3 to the bypass rail 10 or from the bypass rail 10 to the merge side of the guide rail 3. And move. In this way, the self-propelled machine 20 passes through the curved bypass rail 10 without invading the main rail side of the guide rail 3 having the bent portion A, and moves from the lower part of the guide rail 3 to the upper part or vice versa. Moving. Therefore, as in the past, the bent portion A
As compared with the case of passing through the direction changing device 6 of FIG. In addition, when the mooring device 4 is used to move up and down, as shown in FIG.
Is rotated clockwise until the longitudinal stopper 18 contacts the bypass rail 10 to connect the short guide rail 15 to the guide rail 3 side. In this state, the longitudinal stopper 1
6 closes the open end of the bypass rail 10 to prevent derailment of moorings and self-propelled machines coming from above. As a result, the mooring device 4 moves along the main line of the guide rail 3 as usual, and passes through the direction changing device 6 of the bent portion A and the one side (upper side) part of the guide rail 3 with the nuclear direction changing device 6 as a boundary. It is possible to move between the other side (lower side) part.

As the switching means of the branching device 11, various methods are possible. For example, the short guide rail 15 is simply made rotatable, and the normal bypass rail 10 is used.
You just have to push it to the side. In this case, when passing the mooring device, the short guide rail 15 is manually switched,
After passing, it should be restored by hand. Alternatively, the bypass rail may be urged by a spring so that the bypass rail is normally tilted toward the bypass rail side. In this case, when passing through the mooring device, switching is performed manually, but after passing, the spring force automatically returns to the bypass rail 10 side. It is also possible to have a configuration in which switching is performed by remote control when passing through a self-propelled machine. Furthermore, when the self-propelled machine approaches, the short guide rail 15 may be mechanically or electrically interlocked to mechanically switch to the bypass rail 10 side.

The structure of the guide rail itself, the mechanism of the self-propelled machine, the mechanism of the mooring machine, etc. are not limited to those described in the embodiments,
It is optional. That is, the guide rail does not necessarily have to have an I-shaped cross section, and the self-propelled machine and the mooring device do not have to be a mechanism that moves up and down by engaging with the hole on the guide rail side. In short, it is sufficient that the self-propelled machine and the mooring device are configured to be able to move up and down the guide rail.

[0013]

According to the present invention, the guide rail 3 is avoided by avoiding the bent portion A of the guide rail 3 and having the direction changing device 6 as a boundary.
The one side portion and the other side portion of the ruler 3 are connected by a bypass rail 10, and the bypass rail 10 and the guide rail 3 are connected.
Since the connection with the short guide rail 15 is rotatable and the branching device is provided with the stoppers 16 and 17 for closing the open ends of the unselected guide rails 3 or bypass rails 10, the mooring device is used. When a person moves up and down the tower 1 by using 4, the mooring device 4 can be moved up and down via the bent portion A of the guide rail 3 as in the conventional case.
When raising and lowering the self-propelled machine, it is smoothly guided to the bypass rail 10 via the branching device 11 and efficiently raised and lowered without the difficult operation of automatic raising and lowering to pass the direction changing device 6. Is something that can be done.

Further, the branching device 11 for guiding the self-propelled machine to the bypass rail 10 can be installed by notching only a part of the guide rail 3 of the existing steel tower 1 without requiring deformation or large removal. Therefore, the present invention can be easily applied to an existing steel tower and has high practical value.

[Brief description of drawings]

FIG. 1 is a schematic view showing an entire steel tower including a guide rail device for lifting and lowering a steel tower according to an embodiment of the present invention.

FIG. 2 is an enlarged view of the vicinity of a branching device of the same tower lifting guide rail device, showing a state in which a bypass rail is selected.

FIG. 3 is an enlarged view of the vicinity of a branching device of the guide rail device for raising and lowering a steel tower, showing a state where a guide rail is selected.

FIG. 4 is a schematic side view for explaining the structure of the self-propelled machine.

FIG. 5 is a schematic plan view illustrating the structure of the self-propelled machine.

FIG. 6 is an explanatory view showing a state in which an operator engages the mooring device with the guide rails and moves up and down the tower.

FIG. 7 is a schematic view showing an entire steel tower including a conventional guide rail device for lifting and lowering a steel tower.

[Explanation of symbols]

 1 steel tower 3 guide rail 3a hole 3b flange 4 mooring device 6 direction changing device 10 bypass rail 11 branching device 13 shaft 14 base plate 15 short guide rail 16, 17 stopper (longitudinal stopper) 20 self-propelled machine 21 sprocket 22 roller A Bend part B connection part

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[Procedure amendment]

[Submission date] August 20, 1991

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 2

[Correction method] Change

[Correction content]

[Fig. 2]

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 3

[Correction method] Change

[Correction content]

[Figure 3]

Claims (1)

Claims: 1. A mooring device (4) for preventing a fall can be guided, and a bending part (A) is provided at an intermediate portion in the height direction of a steel tower (1). ), A guide rail (3) provided with a direction changing device (6) for changing the direction of the mooring device (4).
In a guide rail apparatus for elevating and lowering a tower, which avoids the bent portion (A), a curved bypass is formed between one side portion and the other side portion of the guide rail (3) with the turning device (6) as a boundary. The rail (10) is connected to the connecting portion (B) between the bypass rail (10) and the guide rail (3), one end of which is rotatably connected to the merging side guide rail (3) and the other. The short guide rail (15) for switching which can be selectively connected to the guide rail (3) or the bypass rail (10) whose end side is the branch side, and the non-selected guide rail (3) or bypass rail (10) A guide rail device for elevating and lowering a steel tower, comprising a branching device (11) provided with stoppers (16, 17) for closing open ends.