JP2527815B2 - Variable speed lift - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a lift installed in a ski resort or the like and in which a large number of carriers move back and forth along a transfer line.

[Prior art]

Conventionally, as a lift of this type, a carrier is fixed to a rope and is hung, and a lift is wound to move the carrier.

[Problems to be Solved by the Invention]

However, in this conventional lift, since each carrier is fixed to the rope, the distance between each carrier is constant, and
The moving speed of each carrier is constant.

Therefore, for example, when this conventional lift is used as a ski lift, since each carrier always moves at a constant interval and speed, a certain technique is required to get on and off the skier to and from the carrier. It was difficult to get on and off this carrier.

In order to deal with such a problem, by releasing the fixed state of each carrier to the rope and supporting the carrier whose released state has been released by another supporting portion and moving it by another moving mechanism. In some cases, the interval and speed of each transporter can be changed in the entry / exit section to the transporter.

However, it is necessary to install a mechanism for releasing the stuck state from the rope, a support unit and a moving mechanism different from the rope in the entry / exit portion to / from the transporter, which results in an increase in cost and an increase in the cost of installing the entire lift.

Also, the structure becomes complicated due to the fixed state releasing mechanism and another supporting part and moving mechanism, and maintenance is troublesome, and since the supporting part and moving mechanism are added, an installation space for that is required. There are problems such as.

The present invention has been made to solve the above-mentioned problems, and an object thereof is to provide a variable speed lift which has a simple structure and can arbitrarily set the speed and interval of a carrier at an arbitrary position. To provide.

[Means for solving the problem]

The lift according to the present invention is provided movably on guide rails made of H-shaped steel for guiding the movement of a large number of carriers, and on the left and right flanges below the guide rails for individually supporting the carriers. A large number of movable supporting wheels equipped with a pair of traveling rollers, electromagnets fixed on the upper flange of the guide rail along the entire length in the longitudinal direction at a predetermined interval and fixed, and a position close to the electromagnets. And a permanent magnet fixed to each of the movable supporting wheels.

Further, it is assumed that the large number of electromagnets and the permanent magnets of each movable support vehicle constitute a variable speed linear motor and serve as a movement drive unit of the movable support vehicle that supports the carrier.

A linear motor composed of a large number of electromagnets provided on the guide rails and permanent magnets of each moving support car allows the moving speed of the moving support car supporting the carrier to be freely changed to an arbitrary position. The moving speed and the interval of the carrier at (for example, a portion where the skier gets on and off the carrier at a ski resort) can be arbitrarily set.

〔Example〕

The variable speed lift according to the present invention will be described below with reference to the illustrated embodiments.

The variable speed lift 1 (see FIG. 1 to FIG. 4) is provided movably on the guide rail 3 that guides the movement of a large number of carriers 2 and on the guide rail 3 that individually supports the carriers 2. A large number of movable supporting wheels 4, a plurality of electromagnets 5 laid side by side at predetermined intervals along the entire length in the longitudinal direction of the guide rail 3 and fixed, and fixed to each movable supporting wheel 4 so as to be in the vicinity of the electromagnets 5. And a permanent magnet 6 which is provided.

Further, a large number of electromagnets 5 of the guide rail 3 and the permanent magnets 6 of each movable support vehicle 4 constitute a variable speed linear motor, which is a movement drive unit of the movable support vehicle 4 supporting the carrier 2.

In this embodiment, the guide rail 3 is made of H-shaped steel, and is attached to the support frame 8 via the rail mounting bracket 7. The guide rail 3 is attached to the upper end of the upper flange 3a at the end opposite to the support frame 8. A large number of electromagnets 5 are laid out and arranged. In addition, the lower flange 3b of the guide rail 3 has a lower flange 3b in the event of a power failure when the energization of the electromagnet 5 is stopped.
A large number of escape prevention devices 9 projecting from the upper surface of are provided at predetermined intervals.

As shown in FIG. 5, the escape prevention device 9 is provided with a projecting portion 9b which is located below the upper surface of the lower flange 3b by the attractive force of the coil 9a when the electromagnet 5 is energized. The protrusion 9b at the time of power failure loses the suction force of the coil 9a, so as shown in FIG.
The pressing force of 10 causes the lower flange 3b to project to a position above the upper surface of the lower flange 3b.

The movable support vehicle 4 includes both side frames 4a, 4a located on both sides of the guide rail 3, and a connecting frame connecting the both side frames 4a, 4a at a position below the guide rail 3.
It is composed of a hanger frame formed in a substantially H shape from 4b.

Then, on both side frames 4a, 4a, the side frame 4
A shaft mounting support member 11 extending in the longitudinal direction of the guide rail 3 in both sides of a is provided, and the traveling roller 12 that abuts the upper surface of the lower flange 3b of the guide rail 3 and the end surface of the lower flange 3b side of the guide rail 3. Side roller 13 that abuts against
And the shaft-mounted support members 11 on both sides of the side frame 4a.
Is pivoted through.

The shaft mounting support member 11 extending to the side frame 4a on the rail mounting bracket 7 side is provided with a reverse running prevention device 14 at the rotation shaft position of the traveling roller 12 as shown in FIG.
Is provided. The side frame 4a on the side opposite to the rail mounting bracket 7 is an upper flange of the guide rail 3.
3a extends upward, and the permanent magnet 6 is fixed so as to be located near the electromagnet 5 provided on the upper surface of the upper flange 3a.

The carrier 2 is composed of a bench seat, and the suspension rod 1 is attached to the lower ends of the side frames 4a, 4a of the movable support vehicle 4.
5 is pivoted through.

According to the variable speed lift 1 having such a configuration, the electromagnets 5 of the guide rail 3 and the permanent magnets 6 of the movable support wheels 4 constitute a variable speed linear motor. Power to the adjacent electromagnet 5
By sequentially converting each electromagnet 5 into an S pole and an N pole so that they do not become the same, the permanent magnet 6 of each movable support vehicle 4 is attracted or repelled.

The electromagnets 5 are the permanent magnets 6 of the movable supporting wheels 4.
Each moving support vehicle 4, that is, each carrier 2 is moved along the guide rail 3 by using the suction or repulsion as a movement drive source.

If the variable speed lift 1 of the present invention is actually used as a ski lift, the movement control of each carrier 2 as shown in FIG. 7 can be easily performed during operation.

Here, the entire length of the ski lift is divided into low speed operation, medium speed operation, high speed operation, and variable speed operation sections. Then, by controlling the frequency of the power supply to the electromagnets 5 on the guide rails 3 in each section (inverter control), the moving speed of each carrier 2 in each section can be freely changed.

In other words, in the acceleration section from low speed to high speed, which is the variable speed operation section of the foothill stop, and the high speed section, even if the intervals of the carrier 2 are different due to the skier's getting in or failure to get in, each carrier is used at low speed and high speed The interval of 2 can be adjusted to 6 seconds. In the low-speed operation section of the mountaintop stop, the speed of each carrier can be reduced so that the skier can easily get off the carrier 2. Further, from these facts, it is possible to freely change the moving speed of each carrier 2 in each section such that the carrier 2 in the remaining section can be operated at medium or high speed.

Since the movement control of each carrier 2 can be easily performed in this way, the operation can be performed without stopping the entire lift if there is some loss.

Further, unlike the conventional case, in a stop, which is an elevator, there is no need for a device that temporarily removes each transporter 2 from the operation line and moves it to another system's operation line, and copes with speed changes of each transporter 2 on the same operation line. can do. This can reduce the space of the stop.

The variable speed lift 1 of the present invention serves as a movement drive source for each carrier 2 by supplying power to the electromagnet 5 and controls the movement thereof, so that each carrier 2 is completely moved when a power failure occurs. You can't let it happen.

Therefore, at the time of this power failure, the protrusion 9b of the escape prevention device 9
As shown by the phantom line in FIG. 1, by projecting to a position above the upper surface of the lower flange 3b, traveling on the lower flange 3b of each movable support vehicle 4 is blocked, and each transporter 2 escapes. Prevent. Further, the reverse running prevention device 14 can also prevent each mobile support vehicle 4, that is, each transporter 2 from running away.

〔The invention's effect〕

The variable speed lift according to the present invention includes a guide rail that guides the movement of a large number of carriers, a plurality of movable support wheels that individually support the carriers and are movably provided on the guide rails, and the guides. A large number of electromagnets are laid out side by side at predetermined intervals over the entire length of the rail and fixed, and permanent magnets fixed to the movable supporting wheels so as to be in the vicinity of the electromagnets.

Further, the large number of electromagnets and the permanent magnets of each movable support vehicle constitute a variable speed linear motor, and are characterized by being a movement drive unit of the movable support vehicle that supports the carrier.

Further, according to this configuration, since the linear motor is composed of a large number of electromagnets provided on the guide rails and the permanent magnets of each movable support vehicle, by controlling the frequency of the power supply to each electromagnet 5, It becomes possible to freely change the moving speed of the movable supporting vehicle that supports the carrier.

Therefore, the moving speed and interval of the carrier at an arbitrary position (for example, the part where the skier gets on and off the carrier in the ski area) can be easily adjusted on the same moving line without the need for a special device as in the past. It can be anything.

As described above, according to the present invention, equipment having a simple structure requires less installation space, and the moving speed of each carrier can be reduced.
A lift whose distance can be freely changed can be provided.

[Brief description of drawings]

1 is a perspective view showing a variable speed lift according to the present invention, FIG. 2 is a view taken along the line AA of FIG. 1, FIG. 3 is a sectional view taken along the line BB of FIG. 2, and FIG. 7 is a cross-sectional view showing an operating state of the escape prevention device, FIG. 5 and FIG.
FIG. 1 is a schematic perspective view showing an embodiment in which the variable speed lift of the present invention is used as a ski lift. 1 ... Variable speed lift, 2 ... transporter, 3 ... guide rail, 3a ... upper flange, 3b ... lower flange, 4 ... movable support vehicle, 4a ... side frame, 4b ... connecting frame,
5 ... electromagnet, 6 ... permanent magnet, 7 ... rail mounting bracket, 8 ... support frame, 9 ... runaway prevention device, 9a ...
Coil, 9b ... Projection, 10 ... Spring, 11 ... Spindle support member, 12 ... Running roller, 13 ... Side roller, 14
…… Reverse runaway device, 15 …… Hanging rod.

Continuation of front page (56) Reference JP-A-64-36556 (JP, A) JP-A-61-206786 (JP, A) JP-A-62-261570 (JP, A)

Claims (1)

(57) [Claims] 1. A guide rail made of H-shaped steel for guiding the movement of a large number of carrying devices, and a pair movably provided on the left and right flanges below the guide rails for individually supporting the carrying devices. A large number of movable supporting wheels equipped with the traveling rollers, electromagnets fixed on the upper flange of the guide rail along the entire length in the longitudinal direction at a predetermined interval, and fixed to the electromagnets. The permanent magnets are fixed to the movable supporting wheels, and the plurality of electromagnets and the permanent magnets of the movable supporting wheels constitute a variable speed linear motor over the entire length of the guide rail in the longitudinal direction. A variable speed lift, which is a movement drive unit of a movable support vehicle that supports the carrier.