JPH05227727A - Driver for cableway - Google Patents

Abstract

PURPOSE:To properly rotate a pulley without using a reduction gear by providing a cylindrical magnetic drum on the same axis as the pulley on the drive side whereon an endless wire rope is wound, and installing an arched linear motor around it through a gap. CONSTITUTION:In an object wherein an endless wire rope 7 is stretched between the pulleys for a wire rope provided at both ends of the division of shifting between two points, a driving drum 10 is fixed to the shaft 3 of the pulley 1 on the drive side. This driving drum 10 is constituted by coupling a boss 104 and a cylindrical drum 10-1 consisting of a magnetic substance by means of radial ribs 10-3, and sticking a plate 10-2 consisting of a conductor such as aluminum, etc., to the periphery of this drum 10-1. And, a circular linear motor 11, wherein a coil is set on the iron core whose magnetic action face is made circular, is arranged through a specific gap G around this driving drum 10, and the driving drum 10, that is, the pulley 1 is rotated by controlling current supply to the coil.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a cableway driving device used in a cableway device such as a lift or a gondola.

[0002]

2. Description of the Related Art Cableway devices such as lifts and gondolas are provided with wire rope pulleys at both ends of the section to be transferred, endless wire ropes are stretched between the pulleys, and in the middle of the transfer section, there are inflection points. Alternatively, to prevent the wire rope from slackening, a guide pulley attached to the column is provided. Then, a lift or gondola is held on the wire rope, and at least one of the wire rope pulleys at both ends of the transfer section is provided with a drive device for rotationally driving, so that the lift or gondola is transferred. is there.

FIG. 7 and FIG. 8 show an example of a cableway drive device which is used in a conventional cableway device and is composed of a speed reducer and an electric motor. 7 is a plan view and FIG. 8 is a side view. A wire rope pulley 1 is fixed to a shaft 3, the shaft 3 is rotatably attached to a frame 2, and the wire rope pulley 1 is supported on the frame 2 so that the pulley 1 is horizontal. The shaft 3 is connected to an output shaft provided below the speed reducer 5 by a coupling 4-1.
An input shaft provided in the horizontal direction of the speed reducer 5 is connected to an output shaft of the electric motor 6 by a coupling 4-2. Since the wire rope 7 is stretched in the groove 1-1 provided on the outer periphery of the wire rope pulley 1, the wire rope 7 is sent out at the peripheral speed of the wire rope pulley, and the lift or gondola can be transferred. .. The rotational force of the wire rope pulley 1 is obtained by reducing the rotation of the electric motor 6 by the speed reducer 5.

9 and 10 show an example in which a double-sided linear motor is used in a cableway drive device. 10 is a side view, and FIG. 9 is a cross-sectional view taken along the line XX of FIG. The wire rope pulley 1 is fixed to a shaft 3, and the shaft 3 is a frame 2
The wire rope pulley 1 is rotatably attached to the frame 2, and is supported by the frame 2 so as to be horizontal. On both sides of the wire rope pulley, a good conductor such as copper or aluminum is attached to the surface, and a ring-shaped reaction plate 9 whose base material is made of a magnetic material is attached or screwed on concentric circles. .. The linear motor 8 is attached so as to maintain a predetermined gap G with the reaction plate 9.

Since the wire rope 7 is stretched in the groove 1-1 provided on the outer circumference of the wire rope pulley 1,
It is delivered at the peripheral speed of the wire rope pulley and can transfer lifts and gondolas. With this configuration, the moving magnetic field generated in the linear motor 8 causes the reaction plate 9 to generate a rotational force, and the wire rope pulley 1 rotates.

[0006]

The above-mentioned conventional techniques have the following drawbacks, respectively.

In a drive system including an electric motor and a speed reducer, oil lubrication is generally used to lubricate the speed reducer. Therefore, maintenance work such as replenishment and replacement of oil and inspection of the amount of oil is required. Will cost a lot of money. In addition, since the driving device used for cableway is mainly carried by humans, the transfer speed is limited, and higher torque is required. Therefore, the speed reducer is special and expensive. Further, noise generated by the speed reducer is also a problem.

On the other hand, in order to make up for these drawbacks, a drive device using a double-sided linear motor has been considered, but this method also has drawbacks. A force for moving the reaction plate in the direction of the traveling magnetic field and a suction force act on the linear motor. Therefore, although the linear motors are arranged on both sides to cancel this suction force, the gap between the linear motor and the reaction plate will be different due to the imbalance of the gap size and load fluctuation during installation. Then, the suction force of the upper and lower linear motors becomes different, and the suction force increases in the direction in which the gap with the reaction plate decreases.Once the balance is lost, the suction force increases rapidly and the gap between the reaction plate and the linear motor disappears. If the linear motor and the reaction plate come into contact with each other, operation cannot be performed.

These causes are that the linear motor mounting position is too close to the outer circumference of the wire rope pulley with respect to the distance between the bearings that rotatably support the wire rope pulley. This is because the gap that fluctuates by acting on both sides of the rope pulley becomes much larger than the gap of the bearing. Also, if the linear motor mounting position is provided inside, the fluctuation of the air gap will be small, but with a linear motor of the same capacity, the torque to rotate the wire rope pulley will decrease, resulting in an inefficient drive device. I will end up.

The present invention has been made to remedy the above-mentioned drawbacks.

[0011]

In order to solve the above problems, the cableway driving device according to the present invention is provided with wire rope pulleys at both ends of a section for transferring between two points,
An endless wire rope is stretched between these wire rope pulleys, at least one of the wire rope pulleys is rotated by a drive source, and in a cableway device for transferring the transfer body held by the wire rope, A cylindrical drum made of a magnetic material is provided on the same axis as the wire rope pulley on the driving side, and an electric conductor is attached or screwed to the outer peripheral surface of the drum so that a constant space is provided between the electric drum and the electric conductor. An arc-shaped linear motor is provided which is formed by forming the iron core of the linear motor in an arc shape, and the torque generated by the arc-shaped linear motor, the drum and the conductor is transmitted to the wire rope pulley. It is a feature.

[0012]

With this structure, even if the gap between the arc-shaped linear motor and the conductor adhered to or screwed on the outer peripheral surface of the cylindrical drum changes, the suction force is generated by the bearing of the rotating shaft. Since it works in the same direction as the radial gap of, the change in the air gap only changes by the radial gap of the bearing, and if the air gap larger than the radial gap is taken, the linear motor and the conductor will not contact in the air gap part. I can drive.

When driving with one linear motor, the thrust of the linear motor increases when the air gap decreases. When multiple linear motors are installed in opposite positions, the thrust increases on the side of the linear motor with the reduced air gap, and the thrust decreases on the side of the linear motor with the increased air gap. Does not change much.

By applying the arc-shaped linear motor in this way, a structure that does not cause contact between the linear motor and the conductor can be obtained, so that the reliability can be improved as compared with the double-sided linear motor.

[0015]

1 to 6 show an example of the construction of a cableway driving device according to the present invention. 1 is a plan view, FIG. 2 is a side view, FIG. 3 is a sectional view taken along the line YY of FIG. 2, and FIG.
FIG. 5 is a sectional view taken along line Z, FIG. 5 is a partial perspective view of the wire rope pulley, and FIG. 6 is a perspective view of an arc-shaped linear motor used in the present invention.

The wire rope pulley 1 and the drive drum 10 are fixed to the shaft 3, and the shaft 3 is the wire rope pulley 1.
And the drive drum 10 are rotatably attached to the frame 2 so that they are horizontal. Drive drum 10 is boss 10-4
And a cylindrical drum 10-1 made of a magnetic material are concentrically connected by a radial rib 10-3, and the outer peripheral surface of the cylindrical drum 10-1 is made of a conductor such as copper or aluminum. The plate 10-2 is formed by adhering or screwing.

As shown in the perspective views of FIGS. 3 and 5, the wire rope 7 is stretched in a groove 1-1 provided on the outer circumference of the wire rope pulley 1. On the other hand, as shown in the perspective view of FIG. 6, the magnetic flux acting surface of the iron core 11-3 is formed in an arc shape, and the iron core 11-3 and the coil 11-2 are mounted on the mounting frame 11-1. The arc-shaped linear motor 11 is arranged so as to be spaced apart from the drive drum 10 by a predetermined gap G. In the perspective view of FIG. 6, the groove for coil winding is omitted. The cableway driving device thus configured is fixed to the foundation A.

In this embodiment, two arc-shaped linear motors 11 are used, but one may be used, or more than one may be attached without any problem. Also, a pulley for wire rope 1
The drive drum 10 and the drive drum 10 may be integrated. Furthermore, depending on the transfer method, the entire device may be mounted at an angle or vertically.

[0019]

According to the present invention, as compared with a cableway drive system using a conventional electric motor and a speed reducer, an expensive speed reducer is not used and maintenance work such as management of lubricating oil is unnecessary. Moreover, it is possible to provide an inexpensive and low-noise cableway drive device.

Compared with a cable drive system of the double-sided linear motor type, it is possible to prevent a contact accident between the linear motor and the reaction plate, which is caused by an imbalance of suction forces of the upper and lower linear motors caused by the air gap variation. Therefore, it is possible to provide a cableway drive device having improved reliability.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a cableway driving device according to the present invention.

FIG. 2 is a side view showing an embodiment of a cableway driving device according to the present invention.

3 is a cross-sectional view taken along the line YY of FIG.

FIG. 4 is a cross-sectional view taken along the line ZZ in FIG.

FIG. 5 is a partial perspective view of a wire rope pulley.

FIG. 6 is a perspective view of an arc-shaped linear motor used in the present invention.

FIG. 7 is a plan view of an example of a cableway driving device including a speed reducer and an electric motor.

8 is a side view of a cableway drive device including the speed reducer and the electric motor shown in FIG. 7. FIG.

9 is a cross-sectional view taken along line XX of FIG. 10, showing an example in which a double-sided linear motor is used in a cableway driving device.

FIG. 10 is a side view showing an example in which a double-sided linear motor is used in a cableway driving device.

[Explanation of symbols]

 1 Pulley for wire rope 1-1 Groove 2 Frame 3 Shaft 4-1, 4-2 Coupling 5 Reducer 6 Electric motor 7 Wire rope 8 Linear motor 9 Reaction plate 10 Driving drum 10-1 Cylindrical drum 10-2 Conductor Plate made of 10-3 Radial ribs 10-4 Boss 11 Arc-shaped linear motor 11-1 Mounting frame 11-2 Coil 11-3 Iron core A Foundation G Gap

Claims (1)

[Claims] 1. Pulleys for wire ropes are provided at both ends of a section for transferring between two points, endless wire ropes are stretched between these pulleys for wire ropes, and at least one of the pulleys for wire ropes is provided. In a cableway device for rotating a transfer source held by a wire rope by a drive source, a cylindrical drum made of a magnetic material is provided on the same axis as the wire rope pulley on the drive side. An arc-shaped linear motor is provided in which an electric conductor is attached or screwed to the outer peripheral surface of the drum, and the iron core of the linear motor is formed in an arc shape with a constant distance from the electric conductor. And a drive device for a cableway, which is configured to transmit torque generated by the drum and the conductor to a wire rope pulley.