Cable anchoring device for cableway

Abstract

To provide a cable anchoring device for a cableway where both ends of a cable is fixed allowing tension to be adjusted within a proper range of the tension through monitoring tension of the cable when the tension comes out of the proper range of the tension.SOLUTION: A cable anchoring device 21 for anchoring a cable 13 is fixed provided in a terminal 12, the cable anchoring device 21 being provided with: a front side frame 22 and a rear side frame 23 placed sequentially in an extension direction of the cable 13, wherein a socket 24 is fixed on an end of the cable 13 to engage the cable 13 with the rear side frame 23 in a state a load cell 25 is clamped between the socket 24 and the rear side frame 23. Between the front side frame 22 and the rear side frame 23, there are provided: a clamp 27 clamped on the cable 13; a clamp receptacle 30 slidably arranged at a front side frame 22 side of the clamp 27 for the cable 13; and a hydraulic cylinder 29 operated between the clamp receptacle 30 and the front side frame 22.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a stay cable retaining device for maintaining and retaining the tension of a stay cable at a station of a ropeway that includes a stay cable stretched between stations and a carrier that runs along the stay cable, and the carrier is pulled by a hauling cable to perform operation.

Background Art

[0002] A ropeway is a transportation facility that suspends a carrier from a cable stretched in the air and pulls the carrier by the cable to perform operation. Ropeways are roughly classified into a single-line ropeway and a double-line ropeway. In any type of ropeway, generally, columns are arranged in the line between stations to support the cable. The single-line ropeway is a system in which a single cable is circulated between stations, a carrier is fixedly suspended from the cable, and the carrier moves together with the cable by driving the cable.

[0003] On the other hand, the double-line ropeway is a system in which a stay cable, which is a stationary cable, is stretched between stations, a hauling cable, which is a moving cable, is circulated and stretched between stations, and a carrier suspended from the stay cable is pulled by the hauling cable to perform operation. In the line, the stay cable and the hauling cable are supported by a stay cable saddle provided on an erected column. However, depending on the design conditions of the line, there are also facilities that do not provide columns or stay cable saddles in the line.

[0004] In the double-line ropeway, the stay cable is generally configured such that one end is retained and fixed at a high station, and a weight is connected to the other end and suspended at a low station to keep the tension of the stay cable constant (see, for example, Patent Document 1). On the other hand, when there are restrictions due to terrain or the like on the land where the facility is installed, or in the case of a ropeway facility dedicated to cargo transportation, there are also facilities that retain and fix both ends of the stay cable (see, for example, Patent Document 2).

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, in a cableway that fixes both ends of the above-mentioned stay cables, it is conceivable that due to changes in temperature, sunlight irradiation, etc., the stay cables expand and contract, causing the overall length to change, and the tension acting on the stay cables to deviate from the appropriate tension range.

[0007] The present invention has been made in view of such circumstances, and in a cableway in which both ends of a stay cable are fixed, when monitoring the tension of the stay cable and the tension deviates from the appropriate tension range, it is possible to adjust the tension within the appropriate tension range. The object is to provide a stay cable retaining device for a cableway.

Means for Solving the Problems

[0008] The invention according to claim 1 is a cableway in which a carrier is suspended from a stay cable and the carrier is towed by a hauling cable to operate between stations. At one station, a retaining frame for retaining the stay cable is fixedly installed. The retaining frame includes a front frame and a rear frame that are arranged front and back in the extending direction of the stay cable. A socket is fixed to the end of the stay cable, and a load cell is sandwiched between the socket and the rear frame to hang the stay cable on the rear frame. Between the front frame and the rear frame, there are provided a clamp fitted to the stay cable, a clamp receiver slidably provided with respect to the stay cable on the front frame side of the clamp, and a hydraulic cylinder that operates between the clamp receiver and the front frame.

Effects of the Invention

[0009] According to the present invention, since the tension of the stay cable can be measured constantly or at any time by the load cell of the stay cable fixing device, the tension management of the stay cable can be performed well. Further, when the tension of the stay cable in the line deviates from the appropriate tension range, this situation can be recognized by the measured value of the load cell, and the operation of returning the tension to the appropriate tension range only requires using a hydraulic cylinder and a liner, so the adjustment work can be performed simply and easily.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Embodiments for Carrying Out the Invention

[0011] Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing the outline of the entire cableway line. In the figure, a stay cable 13 fixed at both ends at the foothill station 11 and the mountaintop station 12 is stretched across the line, and a haul rope 15, which is a moving cable, is stretched in parallel with this stay cable 13, and these stay cable 13 and haul rope 15 are supported by columns 14 to form a line. The carrier 16 is provided with a traveling machine 17 having traveling wheels that roll on the stay cable 13, and a body 18 is suspended from this traveling machine 17 via a suspension machine 19, and goods and personnel are loaded on this body 18. The haul rope 15 is connected to the traveling machine 17, and by driving this haul rope 15, the carrier 16 moves between the foothill station 11 and the mountaintop station 12 along the stay cable 13.

[0012] FIG. 2 is a side view of the mountaintop station 12, and FIG. 3 is a plan view of the mountaintop station 12. In the mountaintop station 12, a turning pulley 20 is installed so as to be rotatable in the plane, and a wire rope 15 is wound around the turning pulley 20. On the other hand, although not shown, the foothill station 11 is provided with a driving pulley that rotates by the drive of an electric motor, and an endless wire rope 15 is wound around the driving pulley, and the wire rope 15 circulates between the foothill station 11 and the mountaintop station 12.

[0013] As shown in FIG. 3, on the side extending in one direction of the two wire ropes 15 extending in the up and down lines in the track, two support ropes 13 are stretched in parallel on both sides of the wire rope 15. On the side where the support rope 13 is stretched, a carrier 16 is provided to reciprocate between the foothill station 11 and the mountaintop station 12. The foothill side end of the support rope 13 is fixed at the foothill station 11, while the mountaintop side end is retained and fixed by a retaining device 40 provided at the mountaintop station 12. The retaining device 40 includes a retaining frame 21 fixed in the mountaintop station 12, and a front frame 22 and a rear frame 23 extending upward are formed on the retaining frame 21. The support rope 13 is hooked and retained on the upper parts of the front frame 22 and the rear frame 23 as described below.

[0014] The terminal of the support rope 13 is socketed and a cylindrical socket 24 is fixed thereto, and a load cell 25 is sandwiched between the socket 24 and a rear receiving seat 26 fixed to the rear frame 23 to hook the terminal of the support rope 13. Next, between the rear frame 23 and the front frame 22, a plurality of clamps 27 are mounted on the support rope 13. The clamp 27 is composed of two metal blocks having grooves on the side surface that conform to the outer diameter of the support rope 13. The support rope 13 is sandwiched between the groove surfaces of the metal blocks, and the two metal blocks are firmly mounted on the support rope 13 by tightening bolts.

[0015] On one side, a front receiving seat 28 is fixed to the front frame 22. A hydraulic cylinder 29 is attached to this front receiving seat 28, and a clamp receiving seat 30 is mounted on the rod tip of this hydraulic cylinder 29. The clamp receiving seat 30 has a through hole formed at its center position, and the guy wire 13 extends through this through hole. The clamp receiving seat 30 is slidable with respect to the guy wire 13.

[0016] With the above configuration, the operation and function of the retaining device 40 will be described. Fig. 4 is an explanatory diagram of the operation in the retaining device 40. (a) in Fig. 4 shows the normal initial state where the guy wire 13 is retained. In (a), the guy wire 13 penetrates through the front receiving seat 28, the clamp receiving seat, the rear receiving seat 26, and the load cell 25 slidably, and the socket 24 provided at the end is pressed against the load cell 25 and retained.

[0017] Also, a plurality of clamps 27 provided between the rear frame 23 and the front frame 22 have a gap 32 and are fitted to the guy wire 13. Thus, if the guy wire 13 breaks or stretches near the socket 24, the clamp 27 moves together with the guy wire 13 and abuts against the gap 32 of the clamp receiving seat 30 to retain the guy wire 13. By doing so, the safety is enhanced by configuring the double retention of the guy wire 13.

[0018] A measuring instrument is connected to the load cell 25, and the load value received from the socket 24, that is, the tension of the guy wire 13 is measured. Also, an appropriate range of the tension acting on the guy wire 13 is set in the measuring instrument, and when the measured tension deviates from this range, the operator is notified by an alarm or the like.

[0019] Next, for example, when the temperature rises and the stay 13 elongates, resulting in the stay tension in the line dropping below the appropriate tension, the operator recognizes the status of the stay tension based on the measured value of the measuring instrument through an alarm sound or the like, and adjusts it so that the tension of the stay 13 becomes appropriate as follows. In Fig. 4(b), when the rod 33 of the hydraulic cylinder 29 is pushed out, the clamp receiver 30 moves and abuts against the clamp 27, and then the clamp 27 and the stay 13 are moved in the direction of arrow A. As a result, the tension of the stay 13 increases in the part on the line side from the part where the clamp 27 is installed, and the tension does not act on the opposite part, creating a space 34 between the socket 24 and the load cell 25. Then, a liner 31 with a long hole formed to fit the outer diameter of the stay 13 is inserted and installed into the space 34 thus formed in the direction of arrow B.

[0020] Subsequently, when the rod 33 of the hydraulic cylinder 29 is retracted, as shown in Fig. 4(c), the clamp receiver 30, the clamp 27, and the stay 13 move in the direction of arrow C, and the stay tension on the socket 24 side gradually increases with the liner 31 sandwiched between the load cell 25 and the socket 24. After that, when the rod 33 is further retracted to create a gap 32 between the clamp 27, the operation of the hydraulic cylinder 29 is stopped and the subsequent state is maintained. By doing so, the elongation of the stay 13 is absorbed by the thickness of the liner 31, the stay tension in the line is returned to the appropriate value, and it becomes possible to measure the stay tension again with the load cell 25. The above explanation was for the case of increasing the stay tension, but for the case of decreasing the stay tension, the operations in the reverse order of the above may be performed.

[0021] According to the above, since the tension of the stay 13 can be measured constantly or at any time with the load cell 25, the tension management of the stay 13 can be performed well. Also, when the tension of the stay 13 in the line deviates from the appropriate tension range, it can be recognized based on the measured value of the load cell 25, and since it is only necessary to use the hydraulic cylinder 29 and the liner 31 to return this tension to the appropriate tension range, the adjustment work can be easily performed.

Explanation of symbols

[0022] 11 Foothill Stop 12 Summit Stop 13 Stay Cable 14 Support Pillar 15 Guy Cable 16 Conveyor 17 Locomotive 18 Body 19 Suspension Machine 20 Return Pulley 21 Retaining Frame 22 Front Frame 23 Rear Frame 24 Socket 25 Load Cell 26 Rear Support Seat 27 Clamp 28 Front Support Seat 29 Hydraulic Cylinder 30 Clamp Receiver 31 Liner 32 Gap 33 Rod 34 Space A Arrow B Arrow C Arrow

Claims

【Claim 1】 In a cableway in which a carrier is suspended from a stay cable and the carrier is pulled by a hauling cable to operate between stops, a retaining frame for retaining the stay cable is fixedly provided at one of the stops. The retaining frame includes a front frame and a rear frame that are arranged in the front and rear in the extending direction of the stay cable. A socket is fixed to the end of the stay cable, and a load cell is sandwiched between the socket and the rear frame to hang the stay cable on the front and rear frames. Between the front frame and the rear frame, there are provided a clamp fitted to the stay cable, a clamp receiver slidably provided with respect to the stay cable on the front frame side of the clamp, and a hydraulic cylinder that operates between the clamp receiver and the front frame. A stay cable retaining device for a cableway, characterized in that it is provided with the above components.

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