JPH0664530A - Linear motor type driving device for cableway system - Google Patents

Abstract

PURPOSE:To provide a linear motor type driving device in which a specific linear motor can be used for general purposes in a rated speed region, in spite of the cableway system. CONSTITUTION:A prime mover pulley 4 is revolution-driven by a linear motor constituted of an annular reaction plate 7 installed on the prime mover pulley side and a pirmary side stator 8 which is fixedly arranged in a closely opposed state to the reaction plate 7. The reaction plate 7 is installed on a rotary board 6 separated from the prime mover pulley 4. The rotary supporting shaft 2a of the prime mover pulley 4 and the rotary supporting shaft 2b of the rotary board 6 are separatedly bearing-supported 5a and 5b, and interlocking-connected through a gear transmission mechanism 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION Recently, it has been attempted to drive a driving pulley by using a linear motor also in a cableway, but the present invention relates to a linear motor type drive device in such a cableway. In particular, the linear pulley constituted by the driving pulley around which the cord is wound is configured by an annular reaction plate provided on the driving pulley side and a primary side stator fixedly arranged in close proximity to the reaction plate, The present invention relates to a linear motor type drive device in a cableway that is rotationally driven.

[0002]

2. Description of the Related Art As a conventional linear motor type driving device (hereinafter referred to as "conventional device"), as shown in FIGS. 4 and 5, a cord 13 is wound around a cord engaging groove 14a formed in an outer peripheral edge portion. A rotating disk configured to rotatably support a mounted driving pulley 14 on a fixed support shaft 12 that can be vertically fixed to a frame 11 through a plurality of bearings 15, and to use an annular or disk-shaped flat plate portion of the driving pulley 14 as a dual purpose. Reaction plates 17 concentric with the rotation center of the driving pulley 14 are attached to both upper and lower surfaces (or one surface) of 16, and to the frame 11 side,
A plurality of primary side stators 18 are fixedly supported in close proximity to the reaction plate 17, and the driving pulley 14 is horizontally rotated by thrust of a linear motor configured by the reaction plate 17 and the primary side stator 18. The ones that are constructed are well known.

By the way, the peripheral speed of the line engaging groove 14a portion of the driving pulley 14, that is, the traveling speed of the line 13 (hereinafter referred to as "line traveling speed") v is a cableway type (carrying device circulation system, carrier device). However, free selection is not allowed due to safety requirements. For example, in a fixed circulation type cableway in which a carrier continuously moves regardless of whether a person is getting on or off, 2.5 m / s for one passenger and 2.3 m / s for two passengers.
It is said to be about 1.8 m / s for a three-seater, and in the automatic circulation type cableway where the carrier automatically grips and releases at the boarding / alighting place, it is 4 m / s for the Otsukin special cableway, It is set to about 5 m / s. Further, the diameter of the driving pulley 14 and thus the line engaging groove 14a (hereinafter referred to as "pulley diameter")
d is also inevitably decided according to the type of cableway, and although there is some selection range, free setting is not allowed. That is, the line traveling speed v and the pulley diameter d are constant values determined for each cableway type, and there is no room for selection.

In addition, the above-mentioned line traveling speed v and the driving pulley 14
Peripheral speed of the reaction plate 17 part in, that is, propulsion speed by the linear motor (hereinafter referred to as "propulsion speed")
When the diameter of the reaction plate 17 (hereinafter, referred to as “reaction plate diameter”) is V with respect to V, the angular velocity of the driving pulley 14 (= v / (d /
Since 2)) and the angular velocity (= V / (D / 2)) of the linear motor match, there is a relationship of v / d = V / D. Therefore, since v / d has a constant value according to the cableway type as described above, when designing the linear motor, the propulsion speed V and the reaction plate diameter D are set to V / d.
It is necessary to set D so as to be the above constant value (v / d).

[0005]

However, in the conventional device, since the rotary disk 16 on which the reaction plate 17 is installed is also used as the driving pulley 14, the reaction plate 17 is directly attached to the driving pulley 14. Therefore, the reaction plate diameter D is limited by the pulley diameter d and cannot be freely set. On the other hand, the propulsion speed V is obtained by V = (D / d) v, and the cord traveling speed v,
Although it is determined in relation to the pulley diameter d and the reaction plate diameter D, as described above, the reaction plate diameter D is inevitably determined from the relation to the pulley diameter d and the rope traveling speed v and the pulley. Since the diameter d is determined for each cableway type, this propulsion speed V is also inevitably determined when the cableway type is determined, and its free choice is not allowed.

By the way, the propulsion speed V by the linear motor
Can be adjusted by changing the operating frequency, but in order to fully demonstrate the capabilities of the linear motor,
It is desirable to operate at the rated speed of the linear motor.

Therefore, in the conventional device, in order to fully demonstrate the capability of the linear motor, there is no choice but to exclusively use the linear motor according to the cableway type, and a specific linear motor is universal regardless of the cableway type. However, if the linear motor is used, the linear motor may be operated outside the rated speed range, which makes it difficult to perform efficient operation.

Moreover, since the linear motor used for the cableway is extremely large and special, only a motor having a rated operating range of about 18 Hz has been proposed so far, and its type is extremely large. Few. For this reason,
The type of cableway to which the conventional device can be applied is extremely limited, and although the cableway using a linear motor as a drive source is strongly desired to be put to practical use and popularized, such a request cannot be satisfied.

In view of the above situation, the present invention provides a linear motor type drive device which can be used for a general purpose specific linear motor in the rated speed range regardless of the cableway type, and thus drives the linear motor. It aims to meet the demands of the times such as the practical use and widespread use of the cableway as the source.

[0010]

According to the present invention, in the linear motor type driving device described above, in order to achieve the above-mentioned object, in particular, a reaction plate is installed on a rotary disk separate from the driving pulley, and the rotary disk is mounted on the rotary disk. It is proposed that the rotary support shaft and the rotary support shaft of the prime mover be separately supported by bearings, and both the rotary support shafts be interlocked and coupled via a gear transmission mechanism.

[0011]

By changing the transmission ratio of the gear transmission mechanism, regardless of the pulley diameter d and the reaction plate diameter D,
The propulsion speed V for obtaining the predetermined rope speed v can be freely set. That is, it is not bound by the relationship of v / d = V / D. In addition, even when the transmission ratio is 1 and the binding is restricted by the relationship of v / d = V / D, since the turntable on which the reaction plate is installed is configured separately from the driving pulley, the reaction plate diameter D can be set freely,
The propulsion speed V for obtaining the predetermined rope speed v can be freely set.

Therefore, by appropriately setting one or both of the reaction plate diameter D and the transmission ratio of the gear transmission mechanism, the linear motor can be operated at the rated speed regardless of the cableway type and the type of the linear motor. It can be set to a value that can be operated. That is, a specific linear motor can be operated very efficiently at a rated speed, and can be used universally for all types of cableways.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be specifically described below with reference to the embodiments shown in FIGS.

In the linear motor type drive apparatus of this embodiment, as shown in FIGS. 1 and 2, a driving pulley 4 and a rotary disc 6 separately provided from the frame 1 are separately supported on a frame 1 such as a floor frame. 2a and 2b, and the rotation supporting shafts 2a and 2b are interlockedly connected by a gear transmission mechanism 9. A rope engaging groove 4a is formed on the outer peripheral edge of the driving pulley 4, and the rope 3 is wound around the rope engaging groove 4a.

The rotary support shafts 2a, 2b are rotatably supported vertically on the frame 1 via a plurality of bearings 5a, 5b, and make the driving pulley 4 or the turntable 6 horizontally rotatable.

The turntable 6 is horizontally driven by a linear motor composed of a reaction plate 7 arranged on the turntable 6 and a plurality of primary side stators 8 fixedly arranged on the frame 1 side, and gear transmission. The driving pulley 4 is horizontally rotated through the mechanism 9. The reaction plate 7 is
It is attached to both upper and lower surfaces of the outer peripheral edge of the rotary disk 6, and has an annular shape concentric with the rotary support shaft 2b. Further, the pair of upper and lower primary side stators 8 are arranged close to each other so as to have an appropriate clearance with each reaction plate 7 in the vertical direction.

Although the reaction plate 7 and the primary side stator 8 are provided on both the upper and lower sides of the turntable 6, it is possible to use only one of them. Further, in order to further secure the stability of the turntable 6, the lower surface or both upper and lower sides thereof may be supported by a rotating roller or the like. Of course,
The rotation support shafts 2a and 2b may be supported by bearings on both sides of the driving pulley 4 or the turntable 6.

The gear transmission mechanism 9 is a rotary support shaft 2a of the pulley 4.
It is configured as a reduction mechanism in which a large-diameter gear 9a fixed to the above and a small-diameter gear 9b fixed to the rotary support shaft 2b of the rotary disk 6 are meshed. In consideration of the relationship with the reaction plate diameter D, the reduction ratio is obtained by the propulsion speed V when the linear motor to be used is operated at the rated value, and the predetermined rope traveling speed v determined in the rope type is obtained. Is set to be.

According to this structure, the reduction ratio of the reduction mechanism 9 (gear ratio of the gears 9a and 9b) can be freely set. Moreover, since the turntable 6 on which the reaction plate 7 is installed is separate from the pulley 4, the size thereof, that is, the reaction plate diameter D can be set freely without being limited to the pulley diameter d. Therefore, by appropriately setting the reduction ratio by the reduction mechanism 9 and the reaction plate diameter D, it is possible to obtain the optimal propulsion speed V for operating the linear motor in the rated speed range. Therefore, the specific linear motor can be used universally regardless of the cableway type. Therefore, the few linear motors currently proposed can be applied as drive sources in all types of cableways.

Further, the driving pulley vibrates due to various factors during cableway operation, but in the conventional device, such vibration is directly transmitted to the reaction plate 17 and the clearance between the reaction plate 17 and the primary side stator 18 is increased. There is a risk of significant changes. However, in the device according to the present invention, the turntable 6 on which the reaction plate 7 is installed
Since the drive pulley 4 and the drive pulley 4 are separate bodies, and both 4 and 6 are interlockingly connected by the gear transmission mechanism 9, the vibration of the drive pulley 4 is absorbed and mitigated by the gear transmission mechanism 9 to the rotary disk 6 side. There is no direct transmission. Therefore, the driving pulley 4
Even if the vibration occurs, there is little possibility that the clear lance between the reaction plate 7 and the primary side stator 8 fluctuates greatly, and the linear motor can be efficiently driven by maintaining the proper clearance. Such an effect becomes more remarkable when the gear transmission mechanism 9 has a vibration absorbing structure. In addition, the length of the support shaft 2b that directly supports the rotary disk 6 can be freely set, and the mutual spacing between the bearings 5b can be set large, so that it is possible to reduce the play due to the bearing-specific clearance.

In view of the fact that the linear motor has an original function of linear drive, it is considered more preferable to make the curvature of the reaction plate 7 close to a straight line in terms of the linear motor function. According to the present invention, since the size of the rotary disk 6 can be freely set regardless of the pulley diameter d as described above, such an idea can be easily implemented as shown in FIG. That is, in the linear motor type drive device shown in FIG.
Is set to be significantly larger than the pulley diameter d, and the curvature of the reaction plate 7 is designed to be as close to a straight line as possible. In this case, although depending on the type of the linear motor used, the gear transmission mechanism 9 is fixed to the rotary support shaft 2a of the pulley 4 as shown in FIG. It may be configured as a speed increasing mechanism that meshes with a large diameter gear 9d fixed to 2b.

As described above, in the linear motor type drive device according to the present invention, the transmission ratio (reduction ratio or speed increase ratio) and the reaction plate diameter by the gear transmission mechanism 9 are determined according to the type of the linear motor used. By setting D appropriately, a specific linear motor can be used universally for all cableway types. Of course, when the transmission ratio becomes large, the gear transmission mechanism 9 may be configured as a planetary gear mechanism having a large transmission ratio. Further, when it is necessary to match the rotation directions of the driving pulley 4 and the rotary disk 6, it is possible to easily cope with this by interposing an idle gear. In addition, the versatility of the linear motor
When it can be ensured only by setting the size of the rotary table 6, the gear transmission mechanism 9 may be set to the transmission ratio 1.

[0023]

As is apparent from the above description, according to the present invention, the rope traveling speed v and the pulley diameter d are determined according to the type of cableway.
Despite this, a particular linear motor can be universally used in all types of cableway. Therefore, even with the few existing linear motors, the prime mover can be driven in a good and stable state in the rated operation range regardless of the type of cableway, and the practical use and spread of cableways using the linear motor as a drive source It can fully meet the demands of the times.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view showing an embodiment of a linear motor type driving device according to the present invention.

FIG. 2 is a bottom view of the same.

FIG. 3 is a vertical sectional front view showing another embodiment.

FIG. 4 is a vertical sectional front view showing a conventional device.

FIG. 5 is a plan view of the same.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Frame, 2a ... Rotating spindle of a driving pulley, 2b ... Rotating spindle of a rotating disk, 3 ... Rope, 4 ... Driving pulley, 4a ... Ridge engaging groove, 5a, 5b ... Bearing, 6 ... , 7 ... Reaction plate, 8 ... Primary side stator, 9 ... Gear transmission mechanism, d ... Pulley diameter, D ... Reaction plate diameter.

[Procedure amendment]

[Submission date] August 25, 1992

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 2

[Correction method] Change

[Correction content]

[Fig. 2]

Claims (1)

[Claims] 1. A linear motor composed of a driving pulley around which a cord is wound, which is composed of an annular reaction plate provided on the driving pulley side and a primary side stator fixed in close proximity to the reaction plate. , In a linear motor type drive device in a cableway that is driven to rotate,
The reaction plate is installed on a rotary disc that is separate from the drive pulley, and the rotary spindle of this rotary disc and the rotary spindle of the drive pulley are separately supported as bearings, and both rotary spindles are linked together via a gear transmission mechanism. A linear motor type drive device in a cableway characterized by being provided.