JPH0780455B2 - Automatic circulation cableway departure-arrival pushing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a gripping machine that suspends a transporting machine to grasp and release a cord in response to a command from a speed that synchronizes with the cord. The present invention relates to a start-arrival pushing device for an automatic circulation cableway that is decelerated to a very low speed and is stopped or accelerated from a very low speed to a speed synchronized with the speed of the rope.

(Prior Art) Conventionally, an automatic circulation cableway has been widely used as a transportation means in mountainous areas and in recent years as a lift in a ski resort. In this automatic circulation type cableway, a pair of high-speed pulleys arranged at terminals located at both ends of the cableway are connected between a pair of high-speed pulleys to stretch and circulate the cable rope, and the gripping function of grasping and releasing the cable rope is provided. Suspend the carrier on the cord,
With the movement of the rope, the carrier is operated to transport freight customers.

The gripping machine, at the terminal at one end, is gripped when it reaches the same speed as the rope speed by being accelerated to the rope speed by a conveyor or the like after the stop or the completion of the handling of freight passengers at a low speed traveling state. Take off. When it arrives at the terminal at the other end, it automatically releases the line, and it is decelerated by a conveyor or the like from the line speed to a very low speed or stopped, and is treated as a freight customer in the state of running at a very low speed or stopped. In this way, freight passengers are transported.

If the gripping machine and the rope are not gripped at the same speed, it is not preferable because not only the wear of the equipment is accelerated but also the freighter of the carrier is impacted. in this way,
The automatic circulation type cableway requires a device for stopping or accelerating the carrier at the time of departure from the very low speed to the same speed as the rope, or for decelerating the speed of the rope at the arrival to the very low speed or stop. This device is a departure-arrival pushing device.

Next, a conventional automatic circulating cableway departure-arrival pushing device will be described with reference to the plan view of the entire drive-side terminal A of FIG. 6 and the side view of FIG. In this terminal A, the high speed pulley 3 is driven by the main motor 1 via the speed reducer 2, but in the driven side terminal corresponding to this terminal A, the high speed pulley is driven by the rope 4. Therefore, the main motor 1 and the speed reducer 2 do not exist. But everything else is exactly the same.

6 and 7, a cord 4 is stretched between a high-speed (driving) pulley 3 of the terminal A and a high-speed pulley of the driven side terminal (not shown). Is circulated at a constant speed v _h in the direction indicated by the arrow.

The rope 4 is guided downward by the guide roller 5 when reaching the driving side terminal A including the driven side, and the gripping rope guide rail 6 provided along the rope 4.
Drive below. Therefore, the gripping machine 7 releases the cord 4, and the lower roller 8 provided at the lower part of the gripping machine 7 travels on the gripping machine guide rail 6. The lanyard guide rail 6 extends around the outside of the high-speed pulley 3 and is installed between the departure side and the arrival side of the carrier 9 suspended by the lanyard 7.

On the other hand, a low-speed drive pulley 10 is provided coaxially with the high-speed pulley 3, and the low-speed drive pulley 10 is provided with a gear device 11 and a shaft 12 for low-speed drive chain 13, and further, a pushing conveyor 14 (14a). , 14b). The chain 13 is provided so as to move along the gripping machine guide rail 6 near the high speed pulley 3 at a low speed v _L in the same direction as the moving direction of the rope 4, and a plurality of chains 13 are arranged on the chain 13. The gripping machine 7 is hooked by the ratchet 15 that has been moved, and the gripping machine 7 is moved from the arrival side pushing conveyor 14a to the departure side pushing conveyor 14b.
Transfer to. Therefore, the rigging machine 7 runs on the lacing machine guide rail 6 from the entrance 16 side to the exit 17 side of the terminal A.

The arrival side and departure side push conveyors 14a, 14b are both of the gripper guide rail 6 from the end of the gripper guide rail 6 to a part where the chain 13 runs in parallel with the gripper guide rail 6. They are arranged in parallel on the upper side and along the gripping machine guide rails 6. The pushing conveyor 14 has a structure in which a plurality of rubber tire-shaped speed control rollers 18 are continuously arranged along the gripping machine guide rail 6, and at least one of the speed control rollers 18 is a gripping machine. 7 are arranged so as to be in pressure contact with the upper surface of 7. These speed control rollers 18 are driven by a power transmission mechanism such as a chain (not shown) to push the gripping machine 7. The place where the push conveyor 14 is provided is the departure-arrival push section.

A series of speed control rollers 18 near the entrance 16 of the terminal A among the speed control rollers 18 constituting the arrival side pushing conveyor 14a.
Is driven so as to force the gripping machine 7 to be pushed on the gripping machine guide rail 6 at the same speed as the speed v _h of the rope 4. Further, in the series of speed control rollers 18 of the portion 19 parallel to the chain 13, the gripping machine 7 is also operated at a low speed equal to the speed v _{L of the} chain 13.
Is driven so as to push. By the way, in the series of speed-controlling rollers 18 between the speed-controlling rollers 18 near the entrance 16 of the terminal A and the speed-controlling rollers 18 in the portion 19 parallel to the chain 13, the speed-controlling rollers 18 are adjacent to each other. The speed of 18 is slightly different, and the speed of the gripping machine 7 is the same as that of the rope 4.
It is driven so as to gradually decelerate from v _h to the same speed as the chain 13 v _L. Incidentally, the in governor rollers 18 as well as the speed of Nigisaku machine 7 is accelerated in the opposite to the speed v _h are disposed in the starting side pusher conveyor 14b.

Thus, when the carrier 9 arrives at the terminal A, the gripping machine 7
The lower roller 8 is engaged with the gripping device guide rail 6, and the upper surface of the gripping device 7 comes into pressure contact with the speed controlling roller 18 of the arrival-side pushing conveyor 14a. The gripping machine 7 releases the cord 4 when it is detected by a predetermined means that the gripping machine 7 rides on the gripping machine guide rail 6. However, Nigisaku machine 7, initially the arrival side pusher above has been governor roller 18 of the conveyor 14a is pusher in rope 4 the same speed v _h, then rope 4 is complete Nigisaku machine 7 From the time of leaving, it is decelerated from the same speed v _h as the rope 4 to the same speed v _{L as the} chain 13, and stops after passing through the arrival side pushing conveyor 14a because the pushing force is lost. Passengers and the like in the carrier 9 suspended by the gripping machine 7 are treated as freight passengers in a very low speed state of speed v _L or in a stopped state.

Next, the gripping machine 7 is hooked by the ratchet 15 arranged on the chain 13 during or after handling as a freight passenger, is driven by the chain 13, and turns around the outside of the high-speed pulley 3 to be pushed to the departure side. Transferred to the conveyor 14b. Subsequently, the gripping machine 7 is pushed by the departure side pushing conveyor 14b, but the departure side pushing conveyor 14b
During this period, the speed-adjusting roller 18 forming the departure-side pressing conveyor 14b has the same speed v _{L as the} chain 13 and therefore is pushed at the speed v _L. Therefore,
Even during this low speed v _L , handling as a passenger is possible.

From the position where the chain 13 moves away from the gripping device guide rail 6, the rotation speed of the speed-adjusting roller 18 of the starting-side pushing conveyor 14b is sequentially increased to accelerate the gripping device 7, and the speed of the rope 4 to the gripping device 7. After passing the speed-control roller 18 near the exit 17 of Terminal A, which gives the same speed as v _h , the rigging machine 7 again returns to the rope 4
Figure out. At the time when the gripping machine 7 grasps the cord 4, the speed of the cord 4 and the speed of the gripping machine 7 are the same speed v _h
Therefore, no shock occurs.

(Problems to be Solved by the Invention) However, in the above-mentioned automatic circulation type cableway,
A roller conveyor using speed-adjusting rollers is used as the start-arrival pushing device, and the rotation speed of each speed-adjusting roller, in other words, the pushing speed is changed by a mechanical speed reduction mechanism, with the speed of the drive motor being constant. . Therefore, there is a problem that the power transmission mechanism is not only complicated but also its maintenance including the speed-adjusting roller is difficult.

The present invention has been made for the purpose of solving such a problem.

(Means for Solving the Problems) In order to achieve the above-mentioned object, a start-arrival pushing device for an automatic circulation type cableway according to the first aspect of the present invention is the same as the above-mentioned one, and is driven at a variable speed by a variable voltage variable frequency inverter. In addition, the primary side is arranged in the departure-arrival pushing section on the ground side, and the secondary side is arranged in the carriage or the carrier that is engaged with the gripping machine in the departure-arriving pushing section. It is characterized by having a motor.

The second aspect of the present invention is the above-mentioned one, in which (a) the variable side is driven at a variable speed by a variable voltage variable frequency inverter, the primary side is arranged in a departure-arrival pushing section on the ground side, and the secondary side is a shackle in the previous period. Machine or a linear induction motor arranged on a carriage that engages with the gripping machine in the departure-arrival pushing section, and (b) constitutes a primary side of the linear induction motor, and a traveling magnetic field of the linear induction motor. A plurality of coils arranged in order in the direction and arranged in parallel, (c) a sensor for detecting the secondary side of the linear induction motor while being provided at a position adjacent to these coils, and (d) a secondary side of the linear induction motor. A switch electrically connecting the variable voltage variable frequency inverter to the coil at least adjacent to the sensor that has detected The one in which the features.

Further, the third aspect of the present invention is the one described above, wherein (a) the variable voltage variable frequency inverter drives the variable speed, the primary side is arranged in a departure-arrival pushing section on the ground side, and the secondary side is the gripping rope. Aircraft or said departure-
A linear induction motor arranged on the carrier truck that engages with the gripping machine in the arrival and pushing section, and (b) detecting the moving object of the secondary side of the linear induction motor, the gripping machine or the carrier truck, and A plurality of sensors arranged along the traveling magnetic field direction on the primary side of the linear induction motor; and (c) detecting the speed of the moving object from the difference in the detection times of the plurality of sensors, And a control means for controlling the output frequency of the variable voltage variable frequency inverter according to the difference of the above.

(Operation) 1st invention; The gear shifting of the gripping machine is performed by a linear induction motor driven at a variable speed by a variable voltage variable frequency inverter instead of a roller conveyor.

Second invention: Since the coil and the variable voltage variable frequency inverter are sequentially connected by the switch, the variable voltage variable frequency inverter supplies only a voltage and a current sufficient to excite the connected predetermined coil.

Third invention: Tuning the speed by controlling the output frequency of the variable voltage variable frequency inverter by controlling the difference between the detected speed of the moving object and the planned pushing speed, especially when the gripping machine grasps the rope at the time of departure. Accurate synchronization between the speed of the strip and the speed of the gripper.

(Embodiment) Next, a concrete embodiment of the departure-arrival pushing device for the automatic circulation cableway according to the first to third inventions will be described with reference to the drawings. The same reference numerals as those used in the description of the related art with reference to FIG. 6 and FIG. 7 indicate the same contents, and redundant description will be omitted.

Embodiment 1 First, referring to FIGS. 1 and 2, in this embodiment, in place of the conventional roller conveyor, the primary side 20A, 20A of the linear induction motor on the deceleration side and the acceleration side on the arrival side and the departure side, respectively.
B is the chain 1 from the end of the gripper guide rail 6
It is arranged above the gripping rope guide rail 6 up to the point where the portion 3 includes a part that runs parallel to the gripping rope guide rail 6 and along the gripping rope guide rail 6 in parallel.

Next, in FIG. 3 showing the starting and pushing side, a speedometer 23 is provided on the shaft 22 of the high-speed pulley 3 on which the rope 4 is stretched, and the speed v _{h of the} rope 4 and the chain 13 velocities v _L have been measured. The gripping machine 7'with the carrier 9 suspended therein has the lower roller 8 provided on the gripping machine guide rail 6 in the lower part of the gripping machine 7'in the terminal A as described in the section of the prior art. Run by. A secondary side 21 of a linear induction motor (common to the deceleration side and the acceleration side) is provided on the upper surface side of this gripping machine 7'so that it faces the traveling position of this gripping machine 7 '. In other words, the primary side 20B of the above-described acceleration side linear induction motor is arranged in parallel on the upper side so as to face the pontoon guide rail 6. In the present embodiment, the primary side 20B of the acceleration side linear induction motor is arranged in parallel in the traveling magnetic field direction X of the linear induction motor shown in FIG.
It is composed of 24a-24g. Each of these coils 24a-24g is connected to a variable voltage variable frequency inverter 26 via switches 25a-25g. Also, these coils 24a-2
Sensors 27a to 27g for detecting the secondary side 21 of the linear induction motor are arranged in the adjacent portions of 4g, respectively.
The detection outputs of a to 27 g are supplied to the inverter controller 28. In addition, the low speed section L actually shown in FIG.
(V _L ) is about 5 m, acceleration section M (v _L → v _h ) is about 10 m, and high-speed section N (v _h ) is about 3 m, so the number of coils 24 (24a to 24g) etc. is much larger. .

The inverter control device 28 receives the speed signal from the speedometer 23, and detects the speed v _{h of the} rope 4 and the low speed chain.
The velocity v _L of 13 is calculated from the velocity signal and each sensor 27
Calculates the planned feeding speed at the a to 27g positions. further,
The moving speed of the gripping machine 7'is calculated from the difference between the detection times of the detection signals from the sensors 27a to 27g, and the variable voltage variable frequency inverter 26 is calculated according to the difference between the planned pushing speed and the moving speed of the gripping machine 7 '. Control the output frequency of. As a matter of course, the linear induction motor can be stably moved by controlling the output voltage according to the output frequency.

By the way, if the gripping machine 7'hanging the carrier 9 which has been treated as a freight passenger is hooked by the ratchet 15 and towed by the chain 13, travels on the gripping machine guide rail 6 and arrives at the departure pushing section. , The first sensor 27a detects the arrival of the gripping machine 7 ', in other words, the secondary side 21 of the linear induction motor, and the switch 25a of the first coil 24a is closed by this detection, and the inverter controller 28 indicates the output frequency of the variable voltage variable frequency inverter 26 when the gripping machine 7'is in the chain 13
Control the output frequency to keep the speed of V _L.

When the gripping device 7'is pushed and the secondary side 21 of the linear induction motor is detected by the second sensor 27b as well as the first sensor 27a, the second sensor 27b is adjacent to the traveling magnetic field direction X. The switch 25b of the second coil 24b is also closed.
Even if the first sensor 27a no longer detects, the switch 2 of the first and second coils 24a, 24b is still provided while the second sensor 27b is detecting the secondary side 21 of the linear induction motor.
2a and 25b remain closed. When the third sensor 27c as well as the second sensor 27b comes to detect the secondary side 21 of the linear induction motor, the first, second and third coils 24
Switches 25a-25c on a-24c remain closed or close. Next, when the second sensor 27b stops detecting, the switch 25a of the first coil 24a is opened. Similarly, only the switches 25 of the front and rear coils 24 in the traveling magnetic field direction X of the sensor 27 that has detected the secondary side 21 of the linear induction motor are closed, and the other switches 25 are opened.
In this way, only the voltage and current sufficient to excite the secondary side 21 of the linear induction motor, in other words, only the coil 24 necessary to push the gripping machine 7 ′ from the variable voltage variable frequency inverter 26 to the coil 24. Since it is supplied, the capacity of this variable voltage variable frequency inverter 26 is minimal.

During the low speed section L, the ratchet 15 of the chain 13 moves to the gripping machine 7 '.
The speed of the chain 13 after leaving the vehicle and entering the acceleration section M
It is accelerated from v _L to the speed of the rope 4 v _h . Next, when the gripping machine 7'enters the high speed section N, it is detected that the gripping machine 7'has entered the high speed section N, and the gripping machine 7'finds the rope 4 and guides the gripping machine. Leave rail 6 and depart from Terminal A.

With respect to the arrival and delivery section, only the reverse order of the configuration and operation described above will be omitted, and thus detailed description thereof will be omitted.
However, when the rigging machine 7 ′ arrives at the terminal A and starts to run on the rigging machine guide rail 6, and when the first sensor detects the secondary side 21 of the linear induction motor, the switch of the first coil is closed. with the variable voltage variable frequency inverter Nigisaku machine 7 'it is controlled by the inverter control device to the output frequency to keep the speed of the speed v _h of the rope 4. When the secondary side 21 of the linear induction motor is in the high speed section l, the gripping machine 7'releases the rope 4, is decelerated to the speed v _L in the deceleration section m, and is slightly slowed at a position beyond the low speed section n. After being treated as a freight passenger at a speed or in a stopped state, it is hooked by the ratchet 15 of the chain 13 and transferred to the above-mentioned departure pushing section. Note that the variable voltage variable frequency inverter and the inverter control device are generally arranged separately on the departure side and the arrival side, and when using them together, attention must be paid to the interval of the carrier 9.

Second Embodiment Next, the case of separately using the carrier 29 that engages with the gripping machine 7 ″ in the departure-arrival pushing section will be described with reference to FIG. The same reference numerals as those used in FIG.

In FIG. 4, in addition to the gripping machine guide rail 6 for the gripping machine 7 ″, the carriage 29 is run along the gripping machine guide rail 6 and runs on the gripping machine guide rail 6. For this purpose, the carriage guide rail 30 is used for this gripping machine guide rail 6.
In the same manner as above, it is provided on each of the departure pushing side and the arrival pushing side not shown. A secondary side 21 of the linear induction motor is provided on the upper surface side of the carrier vehicle 29, and a carrier roller 31 is provided at the lower part thereof, so that the carrier vehicle 29 travels on the carrier vehicle guide rail 30 at the departure or arrival section. It is configured to travel back and forth in a section. In addition, an engaging portion 33 that engages with a protruding portion 32 that protrudes to the upper surface side of the gripping machine 7 ″ is also provided in the lower portion of the transport carriage 29. The engaging portions 33 rotate at their tips, respectively. It is composed of a pair of turning levers 35 having a body 34. Therefore, the gripping device 7 ″, which has reached the terminal A by suspending the carrier 9, is engaged with the engaging portion 33 via the protrusion 32, As described above, the transport carriage 29 pushes the departure pushing section. In the present embodiment, the carrier carriage guide rail 30 and the like are configured such that the carrier carriage 29 automatically reciprocates on the carrier carriage guide rail 30 after the completion of the reciprocating movement by the variable voltage variable frequency inverter 26 in the forward direction. However, the transport carriage guide rail 30 may be formed in a ring shape so that the transport carriage 29 is circulated. In this case, it is necessary to pay attention to the distance between the carrying devices 9.

As a modified example, as shown in FIG.
May be provided on the upper surface side of the gripping machine 7, while the protrusion 32 may be provided on the lower surface side of the transport carriage 29 '.

In the first and second embodiments, the conventional low-speed drive chain 13 is used as it is, but the primary side of the linear induction motor is
20A and 20B along the guide rail 6 of the gripping machine 3 for high speed pulley 3
Alternatively, the linear induction motor itself may be connected to the outside to replace the chain 13 to push the carrier 9 from the arrival push section to the departure push section.

(Effect of the invention) 1st invention; Since a linear induction motor is used for variable speed pushing of a gripping machine, etc., its structure is simpler than that of a conventional roller conveyor.
Easy to maintain. Further, since the secondary side of the linear induction motor is provided on the side of the gripping machine or the carrier that is moved by being pushed, it is not necessary to separately provide a power supply trolley wire or the like.

Second invention: Since the variable voltage variable frequency inverter needs to supply only the voltage and current sufficient to excite the predetermined coil to be connected, the capacity of the variable voltage variable frequency inverter is small.

Third invention: Speed synchronization, especially shocks due to sudden speed changes, since the speed of the rope and the speed of the gripping machine can be accurately synchronized when the gripping machine grasps the rope at the time of departure. There is no need to transport freight customers smoothly.

By using a carrier truck and arranging the secondary side of the linear induction motor on this carrier truck, the primary side and even the secondary side of the linear induction motor will always be located in the terminal. There is no need to have a snow resistant structure.

[Brief description of drawings]

1 to 5 are drawings for explaining a concrete embodiment of a departure-arrival pushing device for an automatic circulation cableway according to the first to third inventions, and FIGS. A plan view and a side view of the entire terminal corresponding to the first embodiment, FIG. 3 is a schematic partial side view of a terminal corresponding to the first embodiment on the departure pushing side, and FIG. 4 is a starting push of the terminal corresponding to the second embodiment. Side partial schematic view, FIG. 5 is a partial side schematic view of a modified example corresponding to the second embodiment, and FIG. 6 and FIG. 7 are plan views and side views for explaining the entire conventional terminal, respectively. It is a figure. 1 ... Main motor, 2 ... Speed reducer 3 ... High-speed pulley, 4 ... Rope 5 ... Guide roller, 6 ... Grip machine guide rail 7,7 ′, 7 ″ …… Grip machine 8 ...... Lower roller, 9 ・ ・ ・ Carrier 10 …… Low speed drive pulley 11 …… Gear device, 12 …… Shaft 13 …… Chain 14 (14a, 14b) …… Pushing conveyor 15 …… Ratchet, 16 …… Terminal Inlet 17 …… Terminal exit 18 …… Governor roller 19 …… Parts 20A, 20B …… Linear induction motor primary side 21 …… Linear induction motor secondary side 22 …… 3 axis, 23 …… Speed Total 24 (24a to 24g) ...... Coil 25 (25a to 25g) ...... Switch 26 ...... Variable voltage Variable frequency inverter 27 (27a to 27g) ...... Sensor 28 ...... Inverter control device 29,29 '...... Transport truck 30 …… Transport cart guide rail 31 …… Bogie roller, 32 …… Projection part 33 …… Engagement part, 34 …… Rotating body 35 …… Rotating lever

Claims (3)

[Claims] 1. A gripping machine that suspends a carrier and grasps and releases a cord in response to a command, decelerates from a speed in synchronization with the cord to a slow speed, or decelerates from the slow speed to a slow speed. In a start-arrival pusher for an automatic circulation cableway that accelerates to a speed that is in tune with the speed of the line, the primary side is placed in the start-arrival push section on the ground side while being driven at a variable speed by a variable voltage variable frequency inverter. Departure-arrival pusher for automatic circulation cableway, characterized in that the secondary side comprises a linear induction motor arranged on the carriage or a carriage that engages with the gripper in the departure-arrival pusher section. . 2. A gripping machine that suspends a carrier and grasps and releases a cord in response to a command is decelerated from a speed synchronized with the cord to a slow speed or a very low speed, and from the stop or a very low speed to the rope. In the start-arrival pushing device of the automatic circulation type cableway that accelerates to a speed that synchronizes with the speed of the strip, (a) is driven at a variable speed by a variable voltage variable frequency inverter, and the primary side is placed in the start-arrival pushing section on the ground side. And the secondary side is either the gripping machine or the departure-
A linear induction motor that is arranged on the carriage that engages with the gripping machine in the arrival and delivery section, and (b) constitutes the primary side of this linear induction motor, and is arranged in order in the traveling magnetic field direction of this linear induction motor. A plurality of coils arranged in parallel, (c) a sensor that is provided at a position adjacent to these coils and that detects the secondary side of the linear induction motor, and (d) the sensor that detects the secondary side of the linear induction motor. An automatic circulating cableway departure-arrival pushing device, comprising: a switch electrically connecting the variable voltage variable frequency inverter to at least the coil adjacent to the sensor. 3. A gripping machine that suspends a carrier and grasps and releases a cord in response to a command, decelerates from a speed in synchronization with the cord to a stop or a very low speed, and from the stop or a very low speed to the rope. In the start-arrival pushing device of the automatic circulation type cableway that accelerates to a speed that synchronizes with the speed of the strip, (a) is driven at a variable speed by a variable voltage variable frequency inverter, and the primary side is placed in the start-arrival pushing section on the ground side. And the secondary side is either the gripping machine or the departure-
A linear induction motor arranged on the carrier truck that engages with the gripping machine in the arrival and pushing section, and (b) detecting the moving object of the secondary side of the linear induction motor, the gripping machine or the carrier truck, and A plurality of sensors arranged along the traveling magnetic field direction on the primary side of the linear induction motor; and (c) detecting the speed of the moving object from the difference in the detection times of the plurality of sensors, The control device for controlling the output frequency of the variable voltage variable frequency inverter according to the difference of the above.