JP2838737B2 - Self-propelled aerial cableway - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a large-scale self-propelled aerial cableway proposed as a new transportation system, and more particularly to an aerial cableway for moving a carrier in a suspended state at high speed and safely. Is to clarify the structure.

[0002]

2. Description of the Related Art The movement of people and goods over long distances is increasing day by day, but it is extremely difficult to construct new expressways and railways due to rising land prices and environmental problems. It has become. Therefore, a new transportation system that replaces the conventional railway or motorway is being sought. Among them, there is the idea of a new transportation system using an overhead cableway, in which support towers are erected at regular intervals, and these support towers are connected by cables.

Conventionally, ropeways, ski lifts, and the like are widely known as aerial cableways. A ropeway is provided by suspending a transporter (cage) on a cable (supporting cable) erected between support towers. Lifts are transported by directly transporting a carrier to an aerial cable (supporting rope) that makes a circling motion. However, like a road or a railway, it is used for land leveling and bridge construction. It is not necessary and is suitable as a transportation system on steep slopes, but it was mainly used for transportation between relatively short fixed points, so it can be used as a large-scale new transportation system connecting cities. Due to various obstacles, it is difficult to transfer technology.

Accordingly, Japanese Patent Application Laid-Open Nos. Sho 62-244902 and 63-501
No. 63-502, 63-503, JP-A-1-160774, 1-
Japanese Patent No. 164671 proposes a new transportation system using an overhead cableway.

[0005]

If an aerial cableway is to be used as a long-distance transportation system, construction costs,
Many problems such as countermeasures against wind and vibration, high-speed running, branching of a cableway and change of a runway have to be solved, and not all of them are solved by the technology described in the above-mentioned publication.

For example, Japanese Patent Laying-Open No. 1-164671 (see FIG. 5) proposes a structure in which a stiffening cable is hung from a support cable by a hanger, and a track is hung from the stiffening cable. The track itself needs to be stiffened in the lateral direction, which increases the weight of the entire track.If the track itself cannot be expected to have lateral rigidity, it resists external stress, especially against crosswinds. As a result, the deformation, torsion, and vibration of the track increase, and a large tension is also applied to the track itself, which leaves significant problems in durability, safety, and the like.

Further, in the supporting tower portion, cables (tracks)
If the cable (track) bends in either direction due to external force from the side, the track will bend at the support tower and the continuation of the track will be restricted. As a result, the high-speed running may be difficult.

[0008] In addition, it is difficult to make a curve on the orbit,
Since one track is provided by one support cable, it is weak against crosswinds, it is not possible to branch or join tracks in the air, and vertical reinforcement is more than necessary because external force concentrates on members that restrain cable deformation There is a problem that the weight of the cable increases, the way to stretch the cable and the way to suspend the track is complicated and there are difficulties in construction, etc., and the aerial cableway will be realized as a new transportation system There are many problems to be solved.

[0009] In view of the above, the present invention aims at realizing an aerial cableway as a new transportation system connecting long distances.
It is intended to solve some of the problems described above.

[0010]

The self-propelled aerial cableway according to the present invention comprises a support tower provided at a fixed interval, two or more main cables stretched in parallel between the support towers, and With respect to the main cable, via a damping mechanism, a connecting beam that is continuously attached at a constant interval in a substantially right angle state, and a plurality of tracks on which the transporter is suspended and arranged on the lower surface of the connecting beam. Or, in the vicinity of the support tower, the connecting beam is suspended by a stiffening cable suspended from the main cable.

[0011]

Next, the present invention will be described in more detail with reference to the embodiments shown in the accompanying drawings.

In FIG. 1, reference numeral 10 denotes a support tower,
Is a main cable suspended between the support towers 10, 30 is a connecting beam attached to the main cable 20, 40 is a track fixed to the lower surface of the connecting beam 30, and 50 is a carrier.

Two or more main cables 20 are arranged in parallel, and a connecting beam 30 is attached at a right angle to the main cable 20. Connecting beam 3
A portion where the main cable 20 is in contact with the main cable 20 is a pin-joined damping mechanism so that no moment is transmitted from the main cable 20 to the connecting beam 30.

The track 40 is arranged parallel to the main cable 20 with the connecting beam 30 as a fulcrum. In the span between the connecting beams 30, the track 40 itself has sufficient strength and rigidity against dynamic load. . The rigidity of the track 40 in the longitudinal direction is smaller than the rigidity of the main cable 20 in the longitudinal direction.
It is assumed that the stiffness in the longitudinal direction of the track 40 is greater than that of the track 40, and that the track 40 does not bend and yield due to bending of the cable due to dynamic load or the like.

The tracks 40 connecting the connecting beams 30 need not necessarily be continuously fixed to each other at the portion of the connecting beam 30. In such an embodiment, the transporter 5
It is also preferable that an independent track connecting member is interposed at the connecting portion of the track 40 for smooth running of zero.

As shown in FIG. 2, the connecting beam 30 is directly attached to the main cable 20 at an intermediate portion between the support towers 10, but as shown in FIG. In order to maintain the continuity, the stiffening cable 22 is suspended from the main cable 20 by the suspension cable 21, and the connecting beam 30 is supported by this. With such a configuration, in the vicinity of the support tower 10, the vertical and horizontal displacements of the connecting beam 30 are suppressed by the stiffening cable 22, and the track 40 attached to the connecting beam 30 has an upwardly convex arch. The mold is fixed by applying tension so that it becomes linear, and continuity as a track capable of continuous running is maintained. Further, since the stiffening cable 22 bears the tension due to the external force such as the crosswind, the tension of the crosswind is not directly applied to the track 40.

Assuming that an external stress due to a cross wind or the like is applied to the entire length of the main cable 20, a dynamic model thereof is as shown in FIG. The stress of each section of the main cable 20 is
The resultant force of the own weight W and the crosswind stress P is Y, and the angle between Y and the vertical line is the rotation angle of the entire main cable 20 about the straight line X connecting the cable support points at the top of the support tower 10. When the flexible main cables 20 receive a crosswind, each of the main cables 20 performs an oscillating motion about the axis X in the above-described model, but the main cables 20 that are pin-joined to the connecting beam 30 are always the same. In order to shift the phase, the connecting beam 30 is always kept horizontal. Also, the resultant force Y with the crosswind
Since the tension of the main cable 20 bears, no stress is applied to the track 40.

Further, regarding the bending of the main cable 20 in the left-right direction, the curve of the track 40 having the upwardly projecting camber in the support tower 10 shows that the main cable 20 can be bent even when the main cable 20 is bent due to cross wind or the like. Since the connecting beam 30 is not restrained in the horizontal left-right direction, the track 40 can secure a gentle curve.

Further, even if the horizontal deflection of the main cable 20 on the next side across the support tower 10 is in the opposite direction, since the suspension cable 21 follows the movement, the track 40 secures a gentle curve. be able to.

The movement (vibration) of the main cable 20 described above.
In order to cope with this, the joint between the connecting beam 30 and the main cable 20 is rotated about a line parallel to a straight line X passing through the intersection and connecting the supporting point of the main cable 20 in the support tower 10. A pin-joined structure that has a damping function for movement. FIGS. 5 and 6 show examples of such a joint structure. The connecting beam 30 and the main cable 20 are rotatably fixed to each other like a so-called bearing mechanism. That is, 31
Is a cover band attached to the main cable 20 in a state where it is inserted into the main cable 20. The cover band is provided in a rotating section cylinder 32 fixed to the connecting beam 30 side via a damper member 33 such as grease. . Of course, a bearing structure of a type in which a bearing is sealed may be used, and various mechanisms can be adopted.

The above-described damping mechanism suppresses the periodic vibration of the entire orbit even by a crosswind or an earthquake, and also functions to attenuate local vibration or independent vibration or vibration of the main cable 20. It is possible to secure the stability of the orbit.

When extreme bending occurs on one side of the main cable 20, if the main cable 20 is not rotatable around the connecting beam 30, a torsional moment is applied to the connecting beam 30. Therefore, in order to absorb such a torsional moment, it is conceivable that the rotational movement of the main cable 20 about the connecting beam 30 is not restricted. As a specific mechanism, the connecting beam 3
The rotation hinge may be provided on one side, both ends, or the center of the zero. In addition, if a damping function is added to the rotating hinge portion, the damping ability of the entire cableway against vibration and the like is further improved. On the other hand, it is conceivable that the moment about the connecting beam 30 is received by the rigidity of the connecting beam 30 and the main cable 20 to prevent the deformation of the track 40 without providing the rotating hinge as described above.

In the conventional cableway, since the main cable itself is a track (track), a tension supporting all loads is applied to a cross section of the main cable. Therefore, it is impossible to branch or join a track (track) that requires a cable cut, and further, curve or meander the track.

On the other hand, in the cableway according to the present invention, the track is arranged on the connecting beam 30 attached to the main cable 20,
Since the track itself does not bear the tension of supporting the cableway, the track can be cut and connected freely. Accordingly, the bending and meandering of the track can be freely performed within the range of the connecting beam 30, and the change, branching, switching, and merging of the running path can be freely performed.

Furthermore, if the track 40 is mounted not only directly on the lower surface of the connecting beam 30 but also in a suspended state with an auxiliary cable or an auxiliary member, the communication between the overhead aerial cableway at a high position and the general road on the ground is possible. Is also possible.

The track 40 is suspended from the main cable 20 via the connecting beam 30 at the intermediate portion, but is near the supporting tower 10 by the hanging cable 21 near the supporting tower 10 as described above. By adopting a mode in which the vehicle is suspended not only from the support tower 10 but also from the auxiliary tower, it is possible to configure a runway changing unit such as an interchange on an expressway.

Although various forms can be adopted as the transporter 50, the required structure includes a suspension mechanism, a driving means,
Control or control means, storage sections for people and supplies, safety mechanisms, and the like. The suspension mechanism of the transporter 50 is the track 4
Although it is linked to the specific configuration of 0, various designs are possible. As the driving means, a method using an internal combustion engine, a method using an electric motor, a magnetic method, or the like can be used. Further, the transporter 50 can be designed in a variety of ways, from a so-called basket that places people around the center, such as a gondola of a conventional cable car, to a self-propelled one that stores or suspends an ordinary car or the like. It is.

[0028]

According to the present invention, stable absorption of vibration due to crosswinds or the like is excellent, and the running path (track) is not sharply broken even near the support tower, so that stable high-speed running can be achieved. It is guaranteed, and because it is configured to be able to freely branch, change, merge, etc. of the track (track), it contributes to the realization of an aerial cableway as a new transportation system, The task mentioned at the outset is solved.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing the whole of the present invention.

FIG. 2 is a schematic sectional view of an intermediate portion.

FIG. 3 is a schematic sectional view showing the vicinity of a support tower.

FIG. 4 is a stress model diagram.

FIG. 5 is a sectional view of a damping mechanism.

FIG. 6 is a sectional view of a damping mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10-Support tower 20-Main cable 21-Suspension cable 22-Stiffening cable 30-Connection beam 31-Cover band 32-Rotating part cylinder 33-Damper member 40-Track 50-Carrier

Claims (2)

(57) [Claims] 1. A support tower disposed at regular intervals, two or more main cables stretched in parallel between the support towers, and a substantially right angle state with respect to the main cables via a damping mechanism. A self-propelled aerial cableway, comprising: a connecting beam continuously attached at a constant interval in a predetermined direction; and a plurality of tracks on which a carrier is suspended and arranged on a lower surface of the connecting beam. 2. The self-propelled aerial cableway according to claim 1, wherein the connecting beam is suspended by a stiffening cable suspended from the main cable near the support tower.