JPS63501A - Track structure in cable suspension railroad - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to track structures in track vehicle systems. In particular, the present invention relates to a suspension railway track structure that maintains strength and rigidity and uses cables as the main structural component.

In conventional track vehicle systems, a lightweight track structure is desired from the viewpoint of improving the economic efficiency of construction, and in urban areas, it is desired that overhead structures be as small as possible due to issues such as aesthetics and sunlight. From this perspective, the Roveway seems fit for purpose. In fact, the cables on the Roeway have elasticity, so they have the advantage of making less noise while running and providing a comfortable ride. However, on the Roeway, the cables hang down between the steel towers, so the vehicle rises when passing the steel towers and descends between the towers, resulting in vertical movement.
Not suitable for high speed driving. In addition, since the cable surface, which is the rolling surface of the wheel, is not flat, there is a disadvantage that the contact pressure of the wheel increases locally, resulting in large wear of the wheel.

Japanese Patent Publication No. 58-55281 discloses a cable-based suspended track structure suitable for mass transportation. As shown in Figures 2 and 3, this track structure supports both the dead load, which is the weight of the track structure itself, and the live load, which is the weight of the vehicles, by means of support cables 1 stretched in a catenary shape. is configured to do so. A rail 2 used for running a vehicle 5 is supported by a support cable 1 via a hanger 3. The track structure with this configuration is supported above the ground surface by the steel tower 4.

As shown in FIG. 3, the rail 2 has a structure in which two conveyor cables are arranged in parallel, connected to each other, and covered with a rail cover 8.
are held parallel to each other. The bracket 9 is then coupled to the support cable l by the track hanger 3. The upper surface of the rail cover 8 is flat, and the wheels of the vehicle roll on this upper surface. Since the conveyance cable 7 is bent due to the weight of the vehicle, the rail cover 8 needs to be able to follow the bending of the cable 7.

The track structure of this configuration (well, since the strength and rigidity are maintained by the support cables, it is lightweight and low cost, and it is also easy to increase the span between the support towers, making it economical and effective for crossing rivers and valleys. It has the advantage of being highly adaptable to terrain such as cables.Furthermore, since it is a cable structure, it has elasticity and can simplify the suspension system of the vehicle, as well as making less noise while driving and providing a comfortable ride. However, since the transport cable supports the vehicle on its upper surface, it is difficult to give the transport cable a large upward camber and apply a large tension to the hanger due to the tension.

Therefore, the rigidity is insufficient, and it becomes difficult to reduce the deflection of the transport cable due to the live load.

In recent years, many systems have been proposed that use linear motors, especially linear induction motors, as drive sources, but in known lobeways and cable suspension railways, in addition to the above-mentioned cables or tracks, there is also a rear coupling system for linear motors. Rails must be provided. Furthermore, in the track structure described in the above-mentioned patent publication, only a small area of the side surface of the track cover can be used for vehicle guidance.
The operating conditions for the wheels that come into contact with the wheels and perform a guiding action become severe, and their lifespan is shortened.

Problems to be Solved by the Invention The present invention solves the above-mentioned problems in the conventional cable suspension railway track structure.

That is, the present invention does not lose the advantages of cable structures, such as lightweight track structures, low construction costs, large spans between support towers, good terrain adaptability, and good riding comfort. The purpose of the present invention is to solve the disadvantages of not being able to apply sufficient tension to the hanger and having parts such as the rail cover that have a short lifespan.

Means for Solving the Problems The present invention has focused on the fact that the cause of the above-mentioned problems is excessive flexure and curvature of the structure, and has completed a structure that can increase rigidity. That is, the structural feature of the present invention is that a stiffening cable having an upward camber is coupled to a hanger for suspending a lower part of the support cable,
The point is that tension is constantly applied to the hanger by the tension of this stiffening cable. Furthermore, another feature of the present invention is that two steel rails each having flanges on the upper and lower sides and a vertical surface serving as a guide rail are used, and these two steel rails are connected by a bracket. The point is that the bracket is connected to the reinforcing cable by a drag hanger. If necessary, it is also possible to attach a plate of conductive material to the rail to serve as a reaction rail for the linear motor.

According to the above structure of the present invention, the stiffening cable having an upward camber is connected to the hanger connected to the support cable, and tension is constantly applied to the hanger, so that the increase in tension due to the live load is prevented. Even if there is, the rate of change in tension is small, thus increasing the rigidity of the entire structure and eliminating excessive deflection. Further, the rail has a flat upper surface forming a running surface, and has a sufficiently large guide surface on the side of the rail.

Example FIG. 1 shows a typical embodiment of the invention.

The track structure shown in the figure has a support cable 10 that is passed between the steel towers 21, and the support cable 10 is in a downwardly slack configuration between the steel towers 21. Support cable 10
hangers 11 hanging downward are connected at appropriate intervals, and the lower end of the hanger 11 has an upward camber.
That is, an upwardly convex reinforcing cable 12 is coupled. The stiffening cable 12 is stretched between the steel towers 21 with tension, and the tension acts to constantly apply tension to the hanger 11 and the support cable 10. A track 15 is connected to the reinforcing cable 12 via a track hanger 16 . A suspended vehicle 17 runs on a track 15.

General structures Ll and L2 having such a structure are arranged continuously with the tower iM having the steel tower 21 interposed therebetween, and a station part N having the station structure 24 is provided at an appropriate position. station i
One end of each of the support cable 10 and the stiffening cable 12 of the track structure is coupled to the N station structure 24, so that the track structure is supported by the station structure.

FIG. 4 shows the relationship between the track structure and vehicles, and FIG. 5 shows details of the track 15. The track 15 includes two rails 13, each consisting of a steel running rail piece 13a with an I-shaped cross section and a guide rail piece 26 provided on one side of the running rail piece 13a, arranged in parallel and connected to each other by brackets 14. It consists of The lower end of the truck hanger 16 is coupled to this bracket 14,
It will be done. A linear motor rear rail conductor 27 is attached to the lower surface of each rail 13. Rail 1
The upper surface of 3 constitutes a running surface.

The vehicle 17 consists of a vehicle body 17a and a bogie frame 18 provided on the top of the vehicle body 17a, and the bogie frame 18 supports a pair of running wheels 19 and a pair of guide wheels 20. The running wheels 19 are arranged so as to roll on the upper surfaces of each of the pair of running rail pieces 13, and the guide wheels 20 are arranged so as to roll on the guide surfaces formed on the side surfaces of the guide rail pieces 26. There is. The reaction rail conductor 27 attached to the lower surface of the rail 13 is connected to the bogie frame 18 at a temperature of tE.

A primary coil 25 of a linear induction motor is provided.

6 and 7 show details of the tower section M, in which the support cable 1 passes over the top 32 of the steel tower 21 mentioned above.
0 is stretched, and a floating porcelain 22 is placed in the middle part of the steel tower 21.
will be provided. A stiffening cable 12 is fixed to the floating casing 22, and the floating casing 22 is further connected to the support cable 10 by a rigid rod 23. In this example,
The rod 23 is pin-coupled to the support cable 10 and the floating wire 22 at its upper and lower ends, respectively. That is, the bracket 30 is attached to the support cable 10, and the floating wire 2 is attached to the support cable 10.
Brackets 31 are provided on each of the rods 2 and the upper and lower ends of the rod are coupled to these brackets.

In the general structure section 1, the bow ff force of the cable 12 of the cable 12 acts on the hanger 11 and the support cable 10 to constantly apply tension. In the tower M, the reaction force of the tension of the stiffening cable 12 acts on the rod 23 as a compressive force. By providing such a reinforcing cable 12, the rigidity of the general structure can be dramatically increased. In the tower M, rigidity is provided only by the support cables 10.

Since the support cable 10 is fixed to the top 32 of the steel tower 21, its movement in the lateral direction is restricted, but there is no restriction in the lateral direction for the floating cage 22. Therefore, a means is required to prevent excessive lateral displacement of the floating rice cake 22. In this embodiment, as shown in No. 7 rgJ, an arm 29 is provided on the floating wire 22, one end of a Chinese direction rod 28 is connected to this arm 29 with a pin, and the other end of the rod 28 is connected with a pin to the steel tower 21. With this configuration, the vertical displacement of the floating guinea pig 22 is not restricted, but the displacement in the Chinese direction can be restricted. If the length of the rod 28 is sufficient, the displacement of the floating reel 22 in the length direction of the track can be sufficiently tolerated.

FIG. 8 shows an example of the configuration of the station structure 24.

A support cable anchor 2 is attached to the upper beam part of the station structure 24.
41, the support cable 10 is fixed, and the stiffening cable anchor 24b fixes the stiffening cable 12. Inside the station structure 24, a concourse 24C, stairs 24d, etc. are provided as necessary.

FIG. 9 shows another embodiment of the present invention. In this embodiment, the rail 13 is constituted by a rail piece 40 having a U-shaped cross section, and the upper surface of the U-shaped cross section serves as a running surface. , the outer side becomes the guide surface. In addition, on the lower surface of the track piece, a conductor 41 for the reaction rail of the linear motor is provided.
is taken up in the same way as in the previous example.

Effects As described above, in the present invention, a stiffening cable having an upwardly convex camber is coupled to a hanger coupled to a support cable so as to constantly apply tension to the hanger and the support cable. Because of this arrangement, the rigidity of the cable structure, which bears both dead and live loads, is dramatically increased compared to conventional devices. Furthermore, since the rails that support the vehicle have flat surfaces on the top and bottom and vertical surfaces that serve as guide surfaces, the upper surface can constitute a running surface, and at the same time, the vertical surface can be used as a guide surface. moreover,
It is also easy to attach the conductor for the reaction rail of the linear motor to the lower side of the lower plane, and the reaction rail can be configured by the side portion of the lower surface of the rail and the conductor attached in this way. Therefore, there is an advantage that there is no need to provide a reaction rail separately from the traveling rail as in the conventional case.

[Brief explanation of the drawing]

Fig. 1 is a side view of a cable suspension railway showing an embodiment of the present invention, Fig. 2 is a side view showing a conventional structure, and Fig. 3 is a perspective view showing an example of rails in the conventional structure. , FIG. 4 is a front view showing the relationship between the track and the vehicle in the embodiment of the present invention, FIG. 5 is a front view showing details of the track structure, and FIG.
The figure is a side view showing the track structure in the tower section.
6 is a front view of the portion shown in FIG. 6, FIG. 8 is a side view showing the track structure in the station area, and FIG. 9 is a view similar to FIG. 5 showing another embodiment of the present invention. 10...Support cable, 11...Hanger, 1
2... Stiffening cable, 13... Rail, -14...
... Bracket, 15 ... Track, 16 ... Truck hanger, 17 ... Vehicle, 21 ... Steel tower, 24 ... Station structure, lateral lot exit

Claims (2)

[Claims] (1) A support cable that is stretched like a catenary and supports both dead load and live load, a hanger that hangs things below the support cable, and a cable that is connected to the hanger and stretched so as to have an upward camber. The structure maintains strength and rigidity by means of a stiffening cable that applies tension to the hanger using its tension. A track structure for a cable suspension railway, characterized in that the brackets are arranged parallel to each other and connected to each other by brackets, and the brackets are supported by track hangers hanging from the stiffening cable. (2) The track structure according to claim 1, wherein the track is provided with a conductor for a linear motor.