JP3289078B2 - Linear motor drive in cableway - Google Patents

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 on a cableway, but the present invention relates to a linear motor type driving device for such a cableway, and more specifically. Specifically, the drive pulley around which the cable is wound, a linear motor configured by an annular reaction plate provided on the drive pulley side and a primary stator fixedly disposed in close proximity to the reaction plate, The present invention relates to a linear motor type driving device in a cableway that is driven to rotate.

[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 cable 13 is wound around a cable engaging groove 14a formed on an outer peripheral edge. The rotating drive pulley 14 is rotatably supported via a plurality of bearings 15 on a fixed support shaft 12 for vertically fixing the frame 11 to the frame 11, and the rotary plate is also configured with an annular or disk-shaped flat plate portion of the drive pulley 14. A reaction plate 17 that is concentric with the rotation center of the driving pulley 14 is attached to both upper and lower surfaces (or one surface) of the driving pulley 16, and
A plurality of primary stators 18 are fixedly supported by being brought close to the reaction plate 17, and the driving pulley 14 is driven to rotate horizontally by a thrust by a linear motor constituted by the reaction plate 17 and the primary stator 18. Compositions are well known.

[0003] The peripheral speed of the cable engaging groove 14a of the driving pulley 14, that is, the traveling speed of the cable 13 (hereinafter referred to as "cord traveling speed") v is a cableway type (carrying system, carrier). Type, etc.), and free choices are not allowed due to safety requirements. For example, in a fixed-circulation cableway in which a carrier continuously moves regardless of getting on and off a person, 2.5 m / s for one person and 2.3 m / s for two people.
s, about 1.8m / s for three-seater passengers, and 4m / s for the Otsu-special cableway and 4m / s for the normal cableway It is about 5 m / s. In addition, the diameter of the driving pulley 14 and thus the rope engaging groove 14a (hereinafter referred to as "pulley diameter").
d is also inevitably determined according to the cableway type, and although there is some choice, there is no free setting. That is, the rope traveling speed v and the pulley diameter d have constant values determined for each cableway type, and there is no choice.

In addition, the cable traveling speed v and the driving pulley 14
Speed of the reaction plate 17 at the time, ie, the propulsion speed by the linear motor (hereinafter referred to as “propulsion speed”)
Assuming that the diameter of the reaction plate 17 (hereinafter referred to as “reaction plate diameter”) is between D and V, in the conventional apparatus, the angular velocity (= v / (d /
2)) and the angular velocity of the linear motor (= V / (D / 2)) match, so that there is a relationship v / d = V / D. Therefore, since v / d takes a constant value according to the cableway type as described above, in 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-mentioned constant value (v / d).

[0005]

However, in the conventional apparatus, the turntable 16 on which the reaction plate 17 is installed is also constituted by the driving pulley 14, that is, 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 set freely. On the other hand, the propulsion speed V is obtained by V = (D / d) v, and the rope 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 in 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 inevitably determined when the cableway type is determined, and free choice is not allowed.

The propulsion speed V of the linear motor
Can be adjusted by changing the operating frequency, but in order to make full use of the linear motor,
It is desirable to operate at the rated speed of the linear motor.

[0007] Therefore, in the conventional apparatus, in order to sufficiently exert the performance of the linear motor, a linear motor corresponding to the cableway type must be exclusively used, and a specific linear motor is generally used regardless of the cableway type. If the linear motor is used, it is natural that the linear motor may be operated outside the rated speed range, and it is difficult to perform efficient operation.

Further, since the linear motor used for the cableway is very large and special, only a motor having a rated operation range of about 18 Hz has been proposed at present, and the type thereof is extremely small. Few. For this reason,
The type of cableway to which the conventional apparatus can be applied is extremely limited, and despite the strong demand for practical use and spread of a cableway using a linear motor as a drive source, such demands cannot be satisfied.

In view of such circumstances, the present invention provides a linear motor type driving apparatus which can use a specific linear motor in a rated speed range irrespective of a cableway type, and drives the linear motor accordingly. It is intended to meet the demands of the times, such as the practical use and spread of cableway as a source.

[0010]

According to the present invention, in order to achieve the above object, in the above-mentioned linear motor type driving apparatus, in particular, a reaction plate is installed on a rotating disk which is separate from a driving pulley, The rotation support shaft and the rotation support shaft of the driving pulley are separately supported by bearings, and both rotation support shafts are interlocked and connected via a gear transmission mechanism, so that the vibration of the driving pulley is reduced by the gear transmission.
It is absorbed and relaxed in the structure and transmitted directly to the turntable side
It is suggested to be configured so as not to have .

[0011]

[Action] 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 set freely. That is, it is not restricted by the relationship of v / d = V / D. Further, even when the transmission ratio is 1 and the relation of v / d = V / D is imposed, the turntable on which the reaction plate is installed is formed separately from the driving pulley. D can be set freely,
The propulsion speed V for obtaining the predetermined rope speed v can be set freely.

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

[0013]

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

In the linear motor type driving apparatus of this embodiment, as shown in FIGS. 1 and 2, a driving pulley 4 and a rotating disk 6 separate from the driving pulley 4 are separately supported on a frame 1 such as a floor frame. 2a and 2b, and the rotation support shafts 2a and 2b are interlockingly connected by a gear transmission mechanism 9. A cable engaging groove 4a is formed on the outer peripheral edge of the driving pulley 4, and the cable 3 is wound around the groove.

Each of the rotating shafts 2a and 2b is vertically supported rotatably on the frame 1 through a plurality of bearings 5a and 5b, and makes the driving pulley 4 or the rotating disk 6 horizontally rotatable.

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

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 also possible to provide only one of them. Further, in order to further secure the stability of the rotating disk 6, the lower surface or both upper and lower surfaces thereof may be supported by rotating rollers or the like. Of course,
The rotating 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 includes a rotation support shaft 2 a of the pulley 4.
And a small-diameter gear 9b fixed to the rotary support shaft 2b of the rotating disk 6 meshes with a large-diameter gear 9a fixed to the rotating disk 6. In consideration of the relationship with the reaction plate diameter D, this reduction ratio can obtain a predetermined cable traveling speed v determined in the cable type by the propulsion speed V when the linear motor to be used is operated at the rated speed. Is set to be

According to such a configuration, the reduction ratio (gear ratio of the gears 9a and 9b) by the reduction mechanism 9 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 by the pulley diameter d. Therefore, by appropriately setting the reduction ratio of the reduction mechanism 9 and the reaction plate diameter D, it is possible to obtain a propulsion speed V that is optimal for operating the linear motor to be used in the rated speed region. Thus, a specific linear motor can be used for general purposes regardless of the cableway type. Therefore, the few linear motors currently proposed can be applied as a drive source in all types of cableways.

Further, the driving pulley vibrates due to various factors during cableway driving. In the conventional apparatus, 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 reduced. There is a possibility that it will change greatly. However, in the apparatus according to the present invention, the turntable 6 on which the reaction plate 7 is installed is provided.
Since the drive pulley 4 and the drive pulley 4 are separate bodies and the two 4 and 6 are interlockingly connected by the gear transmission mechanism 9, the vibration of the drive pulley 4 is absorbed and reduced by the gear transmission mechanism 9, and There is no direct transmission. Therefore, the driving pulley 4
Even if the vibrations occur, there is little possibility that the clearance between the reaction plate 7 and the primary side stator 8 fluctuates greatly, and the linear motor can be efficiently driven by maintaining an appropriate 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 turntable 6 can be freely set, and the mutual interval between the bearings 5b can be increased. Therefore, it is possible to reduce the play due to the clearance inherent in the bearing.

By the way, in view of the fact that the linear motor has a linear drive as its original function, it is more preferable to make the curvature of the reaction plate 7 closer to a straight line in terms of the linear motor function. According to the present invention, since the size of the turntable 6 can be set freely regardless of the pulley diameter d as described above, such a concept can be easily implemented as shown in FIG. That is, in the linear motor drive device shown in FIG.
Is greatly increased in comparison with the pulley diameter d so that the curvature of the reaction plate 7 is made as close to a straight line as possible. In this case, depending on the type of the linear motor to be used, etc., the gear transmission mechanism 9 is, as shown in FIG. 3, a small diameter gear 9c fixed to the rotation support shaft 2a of the pulley 4 and a rotation support shaft of the turntable 6. The speed increasing mechanism may be configured to mesh with a large-diameter gear 9d fixed to 2b.

As described above, in the linear motor driving device according to the present invention, the transmission ratio (reduction ratio or speed increase ratio) and the diameter of the reaction plate by the gear transmission mechanism 9 depend on the type of the linear motor used. By setting D appropriately, a specific linear motor can be generally used for all cableway types. Of course, when the transmission ratio increases, the gear transmission mechanism 9 may be configured as a planetary gear mechanism or the like having a large transmission ratio. Further, when it is necessary to make the rotation directions of the driving pulley 4 and the turntable 6 coincide with each other, it is possible to easily cope with the situation by interposing an idle gear. Also, the versatility of linear motors
If it can be ensured only by setting the size of the turntable 6, the gear transmission mechanism 9 may be set to a transmission ratio of 1.

[0023]

As is apparent from the above description, according to the present invention, the rope traveling speed v and the pulley diameter d depend on the cableway type.
However, certain linear motors can be universally used for all types of cableways. Therefore, even with a few existing linear motors, the pulley can be driven in a good and stable state in the rated operation region regardless of the cableway type, and practical use and spread of the cableway using the linear motor as a drive source can be achieved. We can fully meet the demands of the times.

[Brief description of the 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 apparatus.

FIG. 5 is a plan view of the same.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Frame, 2a ... Rotating support shaft of a driving pulley, 2b ... Rotating support shaft of a rotating disk, 3 ... Cable, 4 ... Motor pulley, 4a ... Cable engaging groove, 5a, 5b ... Bearing, 6 ... Rotating disk , 7 ... reaction plate, 8 ... primary side stator, 9 ... gear transmission mechanism, d ... pulley diameter, D ... reaction plate diameter.

Claims (1)

(57) [Claims] 1. A linear motor comprising a driving pulley on which a cable is wound is constituted 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. In a linear motor type driving device in a cableway that is driven to rotate,
The reaction plate is installed on a rotating disk that is separate from the driving pulley, and the rotating spindle of this rotating disk and the rotating spindle of the driving pulley are separately supported by bearings, and both rotating spindles are interlocked via a gear transmission mechanism. And the vibration of the driving pulley
So that it is not absorbed and transmitted directly to the turntable
Characterized in that are configured, the linear motor driving device in cableway.