JPH0260873A - Linear motor type prime mover for cableway - Google Patents

Abstract

PURPOSE:To correct a floating displacement nearby the circumferential edge of a prime moving pulley so as to prevent the generation of vibration and noise by keeping a required gap between the secondary side conductor of a linear motor for driving the prime moving pulley and the first side stator by a posture correcting device. CONSTITUTION:A prime moving pulley 1 is rotated round an axis by the thrust of a linear motor 10 to drive a cable 5 wound on the circumferential edge 3 for operating a cable equipment. Gaps 13a, 13b between the first side stator 11a..., 11b... and the secondary side conductors 12a, 12b of the linear motor 10 is kept constant by guiding rollers 24a..., 24b... pivoted to the shaft pins 23a, 23b of a posture connection device with rolling and touching to the rolling faces 6a, 6b of the prime moving pulley 1. Like this way, the required valve of the important gap of the linear motor drive is accurately kept so that vibration and noise reduction can be achieved without the floating rotation.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applied to the field of cableways, in which a linear motor is used to drive a driving pulley and the posture of the driving pulley is maintained constant. It is designed to ensure the required air gap.

[Prior art 1] Cableway equipment involves winding a cable between pulleys disposed at both ends of a cableway, and allowing a carrier to be detachably attached to the cable.
Alternatively, they are fixedly connected and suspended, and the carrier is moved along with the movement of the cables for transportation, and it is widely known that they are widely used for transportation on mountains and slopes. - of the pulley is
It is used as a driving pulley to drive the rope, but in order to rotate the driving pulley, a normal high-speed rotating electric motor is used as the prime mover, and this rotation is performed in multiple stages, as in the case of driving general mechanical equipment. A gear reducer consisting of a group of gears decelerates the speed and amplifies the torque, which is transmitted to the driving pulley and rotated.

This driving method is the most stable and currently most economical and is widely used.

However, in this driving method, the electric motor is usually 100
It has a relatively high speed of 0 to 200 ORPM, and even though some noise is generated by cooling fans, vibrations generated by gear reducers, etc., the operation is unavoidable and quiet. I couldn't hope for it.

In addition, in the case of large-capacity cableway equipment, the reduction gear mentioned above weighs several tons or more, making it difficult to transport to mountainous areas, and it is difficult to accurately install the machinery for these drive systems. , and took a lot of time to maintain.

``Problem to be solved by the invention'' On the other hand, a technology or device for driving a disc-shaped driven body using a linear motor has already been proposed and put into practical use in some industrial fields, but It has not yet been put into practical use for driving.

The diameter of the motive pulley is 3 to 4 m1 or more, depending on the diameter of the cable wound around it. When moving the pulley, it is difficult to maintain a constant posture at the peripheral edge of the pulley and to prevent some floating displacement from occurring. However, in general, in the configuration of a linear motor, it is necessary to maintain a constant gap of 178 between the primary conductor and the secondary conductor. This is one of the problems.

The present invention provides a linear motor type driving pulley in which floating displacement near the periphery of the driving pulley is corrected by a posture correction device in order to keep the gap between the downstream side and the secondary side of the linear motor τ constant at all times. The purpose of this invention is to develop a motive pulley using a linear motor that eliminates the motion, noise, etc. that occur in the conventional motive device.

[Means for Solving the Problem] Corresponding to this object, the cableway linear motor drive device of the present invention winds the cable around the periphery of the drive pulley and rotates around the G axis position to In a cableway driving device that drives a cable, a secondary conductor having an annular shape is fixed to the driving pulley concentrically with the shaft, and a secondary conductor opposite to the secondary conductor is attached to the fixed position side. A linear motor has a primary stator disposed at a predetermined gap, and a ring-shaped rolling surface is formed on the driving pulley concentrically with the shaft. A posture correcting device comprising a plurality of rolling devices having rollers pivotally mounted corresponding to rolling surfaces, the driving pulley being rotated by the thrust of the linear motor. As the linear motor moves, the rollers of the rolling device roll and support the rolling surface, thereby maintaining a required clearance of the linear motor.

In the linear motor drive device of the present invention, the drive pulley is driven by the linear motor, and the gap between the secondary conductor and the primary stator, which is necessary in the linear motor, is maintained by the posture correction device. When the primary stator of the linear motor is energized, thrust is generated in the secondary conductor and drives the driving pulley.The posture correction device consists of a rolling surface and a roller, and the rolling surface is formed on the driving pulley. The roller is provided on the fixed side, and the gap necessary for driving the linear motor is maintained by contact between the roller and the rolling surface.

[Example] The configuration of a representative example of the present invention will be explained below with reference to the drawings in FIGS. 1 and 2.

In FIG. 1, a motive pulley 1 is pivoted around a shaft 2, which is a vertical axis, and is rotatable about the shaft 2 in a horizontal position. For example, a rubber liner 4 or the like is provided around the entire circumference near the periphery 3 of the motive pulley 1, and a cable 5 is wound around and guided. It is folded back and strung up.

Next, in this configuration, the linear motor 10 is a double-sided type, with a fixed side
The following method is used. That is, the motive pulley 1 has a secondary conductor 12a which is annular in plan view.

12b are adhered and fixed to one side and the bottom side of the motive pulley 1, respectively, at a position with a radius R1 centering on the shaft 2. On the other hand, a plurality of primary side stators 11a are arranged at fixed positions radially at equal intervals from the center of the shaft 2, and at equal intervals from the center of the shaft 2, corresponding to the secondary conductor 12a.
, 11a.

11a... are provided. Similarly, corresponding to the position of the secondary conductor 12b on the lower surface of the motive pulley 1, other primary stators llb, 11b are located at lower positions overlapping with the secondary stators 11a, 11a, 11a, . . . in a plan view.
, 11b... are fixedly arranged. Here, the secondary conductor 12a and the primary stator 11a, 11a, 11a...
・A required gap or void 13a is provided between the
Similarly, the secondary conductor 12b and the primary stator 11b, 11b, 11
There is a required gap or void 1 between b...
3b.

13b, 13b...

As is well known, suitable conductive materials for the secondary conductors 12a and 12b include copper, aluminum plates, and the like.

Next, the posture correction device 20 is provided near the peripheral edge 3 of the motive pulley 1 in the illustrated case.

Annular flat rolling surfaces 6a and 6b are formed on the upper and lower surfaces of the motive pulley 1 at a position a radius R2 from the shaft 2 of the motive pulley 1, respectively. Next, on the fixed side, at a position of radius R2 from the center of the shaft 2, there are a plurality of rolling devices 21a, 2 corresponding to the rolling surface 6a at equal radial intervals from the center of the shaft 2.
1a, 21a, . . . are arranged. In exactly the same way, on the 1 side of the motive pulley 1, there are a plurality of other rolling devices 21b facing the rolling devices 21a, 21a, 21a, .

21b, 21b... are arranged. Rolling device 21
a, 21a-... and 21b, 21b... have the same configuration, so if we explain the rolling device f21a shown in FIG. 2, the rolling device 21a is A shaft pin 23a is fixed to a bracket 22a, and a roller 24a is pivotally connected to the shaft pin 23a, and the bracket 22a is fixed to a fixed position such as the frame of a driving pulley. The other rolling devices 21a, 21a, . . . and 21b, 21b, 21b, . . . have completely equivalent configurations. Here, rollers 24a, 24a-24b, 24b
are adapted to roll substantially in contact with the rolling surfaces 6a or 6b, respectively, to correct floating rotation of the motive pulley 1;
Or, when there is a risk that the motive pulley 1 may cause floating rotation by maintaining a small gap between it and the rolling surface 6a or 6b, or when the floating rotation exceeds the allowable range, the motive force pulley 1 may come into rolling contact with the rolling surface 6a or 6b. Attach to correct posture.

Here, metal wheels may be used for the rollers 24a, 24a-24b, and 24b, but in order to avoid noise generation when rolling in contact with the rolling surface 6a or 6b, nylon resin having wear-resistant strength is used. It is preferable to use polyurethane resin or the like.

Of course, among the motive pulleys used in this explanation, a motive tension pulley having the functions of motive motion and tension can also be applied as a motive pulley in a broad sense.

In the representative configuration, each primary stator 11
a, 118. 11a-11b, 11b.

When power is applied to 11b..., thrust is generated by the action of a known linear motor, so the driving pulley 1 pivots and rolls around the shaft 2, and the cable 5 wound around the peripheral edge 3 is therefore driven. Cableway carriers will be operated.

In such a drive, gaps 13a, 13 between the primary stator 11a, 11a, 11b, 11b, etc. of the linear motor 10 and the secondary conductor 12a1 or 12b.
a, 13a, 13b, 13b.

As is known, it is particularly necessary that 13b... be within a certain required range. In addition, in the configuration of a double-sided linear motor such as this configuration, when electricity is applied and driving is performed, the gap 13a and the gap 13b are balanced to be equal due to the self-balancing effect, so that the driving pulley 1 is placed on one side. Primary side stator 11a, 11a, 1
1a... and the other primary stator 11b, 11b, 1
1b...There is a tendency to be located in the center.

However, the motive pulley used for the cableway requires a large diameter corresponding to the diameter of the cable 5, and pulleys of 3 to 4 m or more are also used, but such large diameter pulleys are extremely difficult to use. It is difficult to maintain high accuracy. In addition, in a horizontal pulley of this configuration, if the periphery 3 from the center of the shaft 2 is used excessively due to the weight, there is a tendency for the shaft 2 or the shaft 2 to sag due to its own weight, or the shaft 2 or If the bearings are worn, these factors may combine to cause a floating motion similar to a "whistle-by-the-wheel motion" or a "top-like motion" as the drive pulley rotates. Of course, the degree of this is relatively small, so it is acceptable for the original purpose of driving the cable 5, but the linear motor 1
Accurate air gaps 13a, 13a, -1 in case of 0 drive
3b.

13b... There is a possibility that the dimensions cannot be maintained and the predetermined drive characteristics of the linear motor 10 cannot be obtained.

Here, in this configuration, the roller 24a.

24a... 24b, 24. b... rolls along the rolling surface 6a or 6b, respectively, to correct the attitude of the motive pulley 1, correct the above-mentioned floating movement, and maintain the horizontal attitude.・, 13b.

13b is kept constant, and therefore the drive of the motive pulley by the linear motor 10 is achieved stably and with characteristics as planned.

"Other Embodiments" Other embodiments will be described based on the typical configuration described above.

In another embodiment, instead of the driving pulley 1 having a horizontal position and the shaft 2 having a vertical shaft configuration, the driving pulley 1 has a vertical position and the shaft 2 has a horizontal axis configuration. 2
A configuration in which the illustration is rotated 90' is also possible. In this case, compared to the above case, the motive pulley 1 is not deformed by gravity, so although there is less floating rotation in the above case, the gaps 13a, 13a-13b, 13b are kept at a constant angle.
It can be used in the same way in that it has ef.

Next, as another example 2, a case will be described in which the single-type linear motor shown in the third figure is used. It is well known that both double-sided and single-sided linear motors are used, but this configuration is also possible when used to drive a motive pulley, depending on the required driving thrust.

A driving pulley 31 is pivotally supported in a horizontal position on a shaft 32 forming a vertical axis. A secondary conductor 42 of a linear motor 40 is attached to the lower surface of the driving pulley 31 in an annular shape. They are placed at equal intervals.

Further, a flat annular rolling surface 36 is formed on the lower surface of the driving pulley 31, and correspondingly, rollers 54 are provided at fixed positions 55, which are pivotally connected by shaft pins 53 fixed to the respective brackets 52. Multiple rolling gear @51゜51・
... are arranged at equal intervals radially from the center of the shaft 32,
Each of the rollers 54, 54, 54, .

In the case of the configuration of this embodiment, in addition to the cause of floating rotation of the driving pulley that occurs in the case of the above-mentioned typical configuration, since the linear motor 40 is of one-sided type, the primary side stator 41, 41, ... and the secondary conductor 42, making it more difficult to maintain the gap 43, but with the posture correction device 50 having this configuration, the rollers 54, 54...
The rolling surface 36 is rolled and supported, thereby maintaining the horizontal posture of the motive pulley 31 and ensuring the gaps 43, 43, . . . accurately.

[Effects of the Invention] By using the configuration of the present invention, whether the motive pulley is used in a horizontal position or a vertical position, or whether the linear motor system is a double-sided type or a single-sided type is adopted. Even in such a case, the posture of the motive pulley can be maintained constant without floating rotation. Therefore, the required value of the air gap, which is important in linear motor drive, can be accurately maintained.

Therefore, it is possible to use a linear motor drive even in large-diameter cableway pulleys, and this allows quiet operation of the linear motor type, which does not have the noise and vibration inherent in conventional gear reduction types, and has a small number of component parts. It is possible to enjoy the effect that a driving device can be adopted.

Furthermore, if the rollers of the rolling device of this configuration are made of a resin material as described above, quiet operation can be performed without any rolling noise of the rollers.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a linear motor type driving device for a cableway according to the present invention, FIG. 2 is a side view showing a partially sectional view of the linear motor type driving device for a cableway according to the present invention, and FIG. 3 is a plan view of a linear motor type driving device for a cableway according to the present invention. FIG. 3 is a partially sectional side view showing another embodiment of the linear motor driving device for the cableway. 1... Driving pulley, 2... Shaft, 3... Periphery, 4
...Rubber liner 5...Cables, 6a, 6b...
・Rolling surface, 7... Bearing, 8... Hole, 10...
Linear motor, 11a, 11b...-next stator,
12a, 12b...Secondary side conductor, 13a, 13b...Gap, 14a, 14b...Fixed position, 20...Posture correction device, 21a, 21b...Rolling device, 22a, 22b... ...Bracket, 23a, 23b...Axle pin, 24a, 24b-a-ra, 25a, 25b...Fixed position, 31...Motive pulley, 32...Axle, 33...Periphery, 34 ... Rubber liner, 35 ... Cable, 36
...Rolling surface, 37...Bearing, 38...Hole, 4
0...Linear motor, 41...-next stator,
42...Secondary side conductor, 43...Gap, 44...
Fixed position, 50... Posture correction device, 51... Rolling device, 52... Bracket, 53... Shaft bin, 5
4...Roller, 55...Fixed position, R, R...
Radius diagram 1

Claims (1)

[Claims] In a cableway driving device that drives a cable by winding a cable around the periphery of a driving pulley and rotating the cable around an axis position, the driving pulley has a secondary conductor having an annular shape concentric with the axis. At the same time, a linear motor is provided on the fixed position side with a primary stator disposed opposite to the secondary conductor and spaced apart from the secondary conductor by a predetermined gap, and the driving pulley is provided with a linear motor arranged concentrically with the shaft. A posture correcting device is formed by forming a ring-shaped rolling surface on a fixed position side, and disposing a plurality of rolling devices having rollers pivotably connected to the rolling surface in correspondence with the fixed position side. of,
The drive pulley is rotated by the thrust of the linear motor, and the rollers of the rolling device roll and support the rolling surface, thereby filling the required gap of the linear motor. A cableway linear motor drive device designed to maintain