Backup power unit for circulating ropeway

Abstract

To provide a preliminary prime mover device of a circulation type cableway which has enough drive capability and simple constitution of the device itself.SOLUTION: A preliminary prime mover device of a circulation type cableway has a hydraulic motor 57 with a mechanical brake provided with a drive gear 56, a preliminary prime mover hydraulic unit 58 furnishing hydraulic oil to the hydraulic motor 57 with a mechanical brake and a follower gear 55 which is fastened with the pulley 14 and can occlude with the drive gear 56.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a backup prime mover for a circulating ropeway that drives cables in place of a prime mover that drives the cables in the circulating ropeway when the prime mover stops. [Background technology]

[0002] A circulating cableway is a facility in which pulleys are installed at the stations at both ends of the track, an endless cable is stretched between the pulleys, and carriages are suspended from the cable, which is then driven to circulate the carriages between the stations. This circulating cableway is well suited to operation on slopes because it does not require the laying of tracks along the ground and the carriages are pulled by the cable. It is often used as a facility to transport passengers from the foot of a mountain to the top of a slope, like a ski lift, but recently it has also been used as a transportation facility in urban areas.

[0003] In a circulating cableway, the cable is driven by a prime mover that rotates a pulley installed at one of the stations. This prime mover generally comprises an electric motor serving as a driving force source, a reducer connected to the electric motor via a universal joint, and a braking device attached to the output shaft of the electric motor or the input shaft of the reducer. The pulley is connected to the output shaft of the reducer, and when the electric motor is driven, the pulley rotates, causing the cable to move. The braking device typically employs a hydraulic release type braking device, which is configured as follows: First, a brake disc that rotates together with the output shaft of the electric motor or the input shaft of the reducer is provided on the output shaft of the electric motor or the input shaft of the reducer. The brake disc is clamped between brake pads to apply braking force. The brake pads are biased by a spring force that presses against the brake disc, and a hydraulic cylinder is provided in a direction against the spring force. By applying hydraulic pressure to the hydraulic cylinder, the brake pads are pushed open, releasing the braking force (see, for example, Patent Document 1). It also has a braking device that is similarly hydraulically released and clamps the outer periphery of the pulley.

[0004] In a prime mover configured as described above, if the universal joint fails or a prolonged power outage occurs, the carriage will be unable to operate and will remain suspended on the cable along the track. Therefore, it is necessary to safely and quickly accommodate the carriage at a station. For this reason, cableway facilities with long track lengths or steep ground surfaces are equipped with a backup prime mover, so that when operation with the normal drive system is impossible, the drive system can be switched from the prime mover to the backup prime mover. The power source for this backup drive system is often an internal combustion engine, and the driving force generated by the internal combustion engine is input to a reducer via a fluid coupling, a universal joint, a belt transmission, or the like. The input shaft of the reducer is equipped with a switching device that switches between power transmission from the electric motor and power transmission from the internal combustion engine, and the power source can be switched by operating this device (see, for example, Patent Document 2). Another example is a backup prime mover in which a driven gear is fixed to the outer periphery of a pulley, and a drive gear is provided that is driven to rotate by a hydraulic motor or the like, and the driven gear and the drive gear mesh to drive the pulley (see, for example, Patent Document 3).

[0005] With this configuration, if normal operation is stopped due to a power outage or the like, first the switching device is operated to switch power transmission to the standby prime mover, then the brake device is manually released, and after starting the internal combustion engine, the fluid coupling is operated by increasing the engine speed, thereby restarting operation. When the standby prime mover is stopped, an electric signal is sent from the standby prime mover to the hydraulic unit that operates the brake device, so that the brake device is put into braking mode. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 7-17401 [Patent Document 2] Japanese Patent Application Laid-Open No. 2001-294149 [Patent Document 3] Japanese Patent Application Laid-Open No. 2014-34795 Summary of the Invention [Problem to be solved by the invention]

[0007] As mentioned above, the backup drive unit is used when the cableway is unable to operate normally, so it is required to operate reliably and have sufficient driving power, which has resulted in the device itself becoming larger and more expensive.

[0008] The present invention has been made in consideration of the above circumstances, and aims to provide a backup driving device for a circulating ropeway that has sufficient driving capacity and can simplify the configuration of the device itself. [Means for solving the problem]

[0009] The invention of claim 1 is characterized in that a cable is stretched endlessly between pulleys provided at the stations at both ends, and a carriage is suspended from the cable, and one of the pulleys is Or both A reduction gear of a prime mover is connected to the pulley of the prime mover, and the prime mover drives the pulley to circulate the carriage between the stations. In this circulating ropeway, a backup prime mover is provided to drive the pulley when the prime mover is stopped, The aforementioned Backup power unit a driven gear fixed to the pulley, a drive gear provided so as to be able to mesh with the driven gear, a hydraulic motor with a mechanical brake provided with the drive gear and which rotates and drives the drive gear, a standby prime mover hydraulic unit which supplies oil to the hydraulic motor with a mechanical brake, a fixed part, a slide part which is slidable up and down relative to the fixed part and to which the hydraulic motor with a mechanical brake and the drive gear are attached, and a hydraulic cylinder which slides the hydraulic motor with a mechanical brake and the drive gear up and down via the slide part, Equipped with By operating the hydraulic cylinder to lower the slide part relative to the fixed part, the drive gear lowers and the drive gear and the driven gear mesh together, allowing the pulley to be driven by the hydraulic motor with mechanical brake; by operating the hydraulic cylinder to raise the slide part relative to the fixed part, the drive gear rises and the drive gear and the driven gear are released from mesh, making it impossible to drive the pulley by the hydraulic motor with mechanical brake. It is characterized by the fact that [Effects of the Invention]

[0012] According to the invention described in claim 1, when operation is stopped by the backup prime mover, there is no need to put the brake device into a braking state, so there is no need for an electrical circuit configuration between the brake unit and the backup prime mover as in the conventional case, resulting in a simple configuration. Furthermore, even if one of the backup prime movers is inoperable, the other backup prime mover can still operate, further improving safety. Furthermore, the drive gear and driven gear can be easily engaged and disengaged. [Brief explanation of the drawings]

[0015] [Figure 1] Front view showing the layout of the entire automatic circulating ropeway facility [Figure 2] Front view of the transfer device [Figure 3] Plan showing one end of the station [Figure 4] Side view of the machinery at the main station [Figure 5] Plan view of the machine parallel to the inclined plane of the driving pulley [Figure 6] Enlarged side view of the hydraulic motor installation area DETAILED DESCRIPTION OF THE INVENTION

[0016] The present invention will be described in detail below with reference to the drawings. Figure 1 shows the layout of the entire automatic circulating ropeway facility.

[0017] As shown in the figure, a driving pulley 14 and a counter driving pulley 15 are pivotally mounted at the driving side station 11 and the counter driving side station 12 at both ends, respectively, and a cable 18 is wound endlessly around and stretched around the driving pulley 14 and the counter driving pulley 15 to form a cableway. A driving device 13 consisting of an electric motor, a reducer, etc. is connected to the driving pulley 14, and by driving this, the driving pulley 14 rotates, and the cable 18 moves cyclically between the two pulleys.

[0018] Within the cableway, conventionally known carriages 26, each capable of gripping and releasing the cable 18, are suspended from the cable 18 and are arranged at equal intervals between each carriage 26. These multiple carriages 26 grip the cable 18 within the cableway and move together with the movement of the cable 18, and within the motor-side station 11 and the anti-motor-side station 12, the cable 18 is released and the carriages 26 are supported by and move along rails 20, 22 provided at each station.

[0019] The rails 20, 22 provided at the motor-side stop 11 and the anti-motor-side stop 12 at both ends are U-shaped in plan view, and a transport device for transporting the carriage 26 is provided along the rails 20, 22. This transport device is conventionally known, and as shown in Fig. 2, for example, a plurality of rubber-tired wheels 30 are arranged in parallel along the rails 20, 22, and the periphery of the rubber-tired wheels 30 is pressed against the gripping device 27 of the carriage 26 to transport the carriage 26.

[0020] As shown in Figure 3 (showing the motor-side station 11 at one end), the transfer device is made up of a deceleration transfer device 31, a deadhead transfer device 32, and an acceleration transfer device 33. The deceleration transfer device 31 is a device that gradually decelerates the released carrier 26 from the speed of the cable 18 to a slow speed, the deadhead transfer device 32 is a device that transfers the decelerated carrier 26 while maintaining a constant speed at the slow speed, and the acceleration transfer device 33 is a device that accelerates the carrier 26 from the slow speed to the same speed as the cable 18.

[0021] The carriage 26 that has arrived at the motor-side stop 11 in the direction of arrow A is transported within the motor-side stop 11 by the action of these transport devices 31, 32, and 33 as follows: First, the carriage 26 transfers to the rail 20, and after releasing the cable 18, is decelerated to a slow speed by the deceleration transport device 31, and then is sent to the departure side at a slow speed by the deadhead transport device 32. Here, boarding and alighting areas 23 are provided along the route along which the carriage 26 moves at a slow speed, and passengers are allowed to disembark and board the carriage 26 in this section in sequence.

[0022] Fig. 4 is a side view of the machinery at the motor-side station 11, and Fig. 5 is a plan view of the machinery seen parallel to the inclined plane of the motor pulley 14. Within the motor-side station 11, station frames 50 are fixedly installed elevated at positions symmetrical to the left and right parallel to the direction of the tracks, and a motor frame 51 is fixed to the inside of this station frame 50. The motor pulley 14 is pivotally attached to approximately the center of the motor frame 51, and is driven by wrapping a cable 18 around it.

[0023] The lower end of the drive pulley 14 is connected to a universal joint 53 via a chain joint 52, and this universal joint 53 extends underground beneath the station. A reducer and an electric motor are installed underground beneath the station, and the universal joint 53 is driven to rotate by the electric motor via the reducer. In addition, a brake device 54 is provided on the outer periphery of the drive pulley 14, which stops the rotation of the drive pulley 14. This brake device 54 is a conventionally known hydraulic release brake device 54, which clamps and brakes the outer periphery of the drive pulley 14 using the operating force of a spring, and releases the braking force by operating a hydraulic cylinder provided in the brake device 54. The hydraulic cylinder is operated by hydraulic pressure generated by a separately provided hydraulic unit.

[0024] A backup drive device is provided above the drive pulley 14. A driven gear 55 is fixed to the top surface of the drive pulley 14, and a hydraulic motor 57 equipped with a drive gear 56 that meshes with the driven gear 55 is fixed to the drive frame 51. This hydraulic motor 57 is connected by a hydraulic hose to a backup drive hydraulic unit 58 installed at a position away from the drive frame 51. The backup drive hydraulic unit 58 includes an internal combustion engine, a hydraulic pump, and a hydraulic oil tank that stores hydraulic oil, and the internal combustion engine operates the hydraulic pump, sending hydraulic oil to the hydraulic motor 57 to drive the hydraulic motor 57. The hydraulic motor 57 is a hydraulic motor equipped with a mechanical brake, and when the hydraulic motor 57 stops rotating, the mechanical brake operates to maintain the stopped state.

[0025] 6 is an enlarged side view of the installation portion of the hydraulic motor 57. A mounting bracket 59 for holding the hydraulic motor 57 is fixed to the drive frame 51. The mounting bracket 59 consists of a fixed part 60 and a sliding part 61 that slides up and down, and the hydraulic motor 57 is attached to the sliding part 61. The upper part of the fixed part 60 and the lower part of the sliding part 61 are connected by a hydraulic cylinder 62, and by operating a manual pump 63 connected to the hydraulic cylinder 62, the sliding part 61 and the hydraulic motor 57 slide up and down.

[0026] With this configuration, when the hydraulic motor 57 is in a lowered position, the drive gear 56 provided on the hydraulic motor 57 and the driven gear 55 provided on the drive pulley 14 are in mesh with each other as shown by the solid line, making it possible to drive the drive pulley 14 by the hydraulic motor 57. Conversely, when the hydraulic motor 57 is in a raised position as shown by the dashed line, the drive gear 56 and the driven gear 55 are disengaged, making it impossible for the hydraulic motor 57 to drive the drive pulley 14.

[0027] With the above configuration, if normal operation by the electric motor of the prime mover 13 becomes impossible, such as during a power outage, operation is carried out as follows. When operation stops, the brake device 54 operates to keep the prime mover 14 stopped. Next, the hydraulic motor 57 of the backup prime mover is lowered, and the driven gear 55 of the prime mover 14 and the drive gear 56 of the hydraulic motor 57 are engaged. Next, the chain joint 52 is removed, and the connection between the prime mover 14 and the universal joint 53 is released. Next, the hydraulic unit of the brake device 54 is operated to release the braking force of the brake device 54. At this time, the mechanical brake of the hydraulic motor 57 is operating, so the prime mover 14 is kept stopped.

[0028] Next, when the standby prime mover hydraulic unit 58 is operated, the mechanical brake of the hydraulic motor 57 is released and operation is carried out by the driving force of the hydraulic motor 57. When operation is to be stopped, the standby prime mover hydraulic unit 58 is stopped and the operation of the hydraulic motor 57 is stopped. At this time, the mechanical brake of the hydraulic motor 57 is activated and the prime mover pulley 14 is again held stationary. In this way, when operation is stopped using the standby prime mover, there is no need to put the brake device 54 into a braking state, and therefore there is no need for an electrical circuit configuration between the brake unit and the standby prime mover, as in the prior art, resulting in a simple configuration.

[0029] In the above explanation, the explanation was given for the prime mover station 11, but the above-mentioned spare prime mover can be configured in the same way for the non-prime mover station 12. In this way, operation by the spare prime mover is doubled, and even if one of the spare prime mover units is inoperable, the other spare prime mover unit can still operate, thereby further improving safety. [Explanation of symbols]

[0030] 11 Main Line Stop 12 Anti-motorized side stop 13 Power Plant 14 Driving pulley 15 Anti-motor pulley 18 Cable 20 Rail 22 Rail 23 Platform 26 Transporter 27 Grasping Machine 30 Rubber Tire Wheels 31 Deceleration transfer device 32 Deadhead transport device 33 Acceleration transfer device 50 In-venue frame 51 Motive Frame 52 Chain joint 53 Universal Joint 54 Braking device 55 Driven gear 56 Drive gear 57 Hydraulic Motor 58 Standby drive hydraulic unit 59 Mounting bracket 60 Fixed part 61 Slide section 62 Hydraulic cylinder 63 Manual Pump

Claims

[Claim 1] In a circulating cableway, an endless cable is stretched between pulleys provided at the stations at both ends, a carriage is suspended from the cable, a reducer of a prime mover is connected to one or both of the pulleys, and the pulley is driven by the prime mover to circulate the carriage between the stations. a backup prime mover for driving the pulley when the prime mover is stopped, The auxiliary prime mover is a driven gear fixed to the pulley; a drive gear provided so as to be able to mesh with the driven gear; a hydraulic motor with a mechanical brake that is provided with the drive gear and that rotates and drives the drive gear; a standby prime mover hydraulic unit that supplies oil to the hydraulic motor with mechanical brake; A fixed portion; a slide portion that is slidable up and down relative to the fixed portion and to which the hydraulic motor with mechanical brake and the drive gear are attached; a hydraulic cylinder that slides the mechanical brake-equipped hydraulic motor and the drive gear up and down via the slide portion, By operating the hydraulic cylinder to lower the slide part relative to the fixed part, the drive gear is lowered and the drive gear and the driven gear are brought into meshing engagement, so that the pulley can be driven by the hydraulic motor with mechanical brake, A backup prime mover for a circulating ropeway is configured so that by operating the hydraulic cylinder to raise the sliding part relative to the fixed part, the drive gear rises and the engagement between the drive gear and the driven gear is released, thereby disabling the drive of the pulley by the hydraulic motor with mechanical brake.

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