JPH0124104B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a ground drive device in a magnetic continuous transport system, and more particularly to an improvement in the arrangement of a magnetic belt conveyor unit as a drive system.

In a magnetic continuous transportation system, an endless belt (magnetic belt) made of pieces of magnetic material such as iron or carbon steel that are easily magnetized in a magnetic field are arranged at predetermined intervals between a pair of driving wheels and a driven wheel. A plurality of magnetic belt conveyor units are connected so as to have an effective length le (magnetic attraction flat part in Fig. 1 described later) along a running path including an up-down slope part and a flat part. By installing or arranging them at appropriate intervals, the acceleration/deceleration section,
Configuring a transportation line with a preset speed pattern consisting of a constant velocity section, a minimum constant velocity section, or a stop section, and arranging a vehicle equipped with a magnet device that attracts the magnetic belt on this transportation line, The vehicle travels by attracting and following the movement of the magnetic belt using magnetic attraction force.

In the ground-side drive device of such a magnetic continuous transportation system, the drive wheels of each magnetic belt conveyor unit are normally driven in the direction of vehicle travel, regardless of acceleration, deceleration, constant velocity, uphill slope, and downhill sections. The driven wheel is located on the exit side of the wheel, and the driven wheel is located on the entry side, and in order to suppress the sagging of the magnetic belt between the two wheels due to its own weight, the magnetic belt is specifically designed so that tension is applied to the magnetic belt in the direction of the two wheels. A tension device is installed on each shaft of the two wheels so that the length between the two wheels is expanded, and an auxiliary wheel is installed between the two wheels to support and guide the magnetic belt as an auxiliary means to prevent the magnetic belt from sagging due to its own weight. Multiple units are installed to maintain power transmission efficiency between the drive wheels and the magnetic belt, and to suppress the occurrence of pulsation and vibration in the rotating magnetic belt.

However, according to the ground side drive device with such a configuration, for example, the magnetic belt conveyor unit that is rotating at a certain set speed in the deceleration section,
When a vehicle with a faster relative speed approaches,
When the magnetic device of the vehicle is attracted, the magnetic belt is pushed in the direction of travel of the vehicle, causing a force to be applied to the magnetic belt in a direction that weakens the tension applied to the magnetic belt to suppress the slack, and the magnetic belt is The belt becomes slack, causing noise and vibration. The same thing can happen on a constant velocity section on a downhill slope, or on an acceleration section on a downhill slope where an acceleration higher than the set acceleration acts on the vehicle due to a component of power, or even on a flat section. Similar problems also occur in the constant velocity section immediately after the constant velocity section and the deceleration section immediately after the constant velocity section.

SUMMARY OF THE INVENTION An object of the present invention is to provide a ground drive device for a magnetic continuous transportation system that eliminates the cause of slack in the magnetic belt due to the difference in relative speed between the vehicle and the magnetic belt.

That is, in the ground-side drive device in the magnetic continuous transportation system of the present invention, the magnetic belt is used in sections where the relative speed of the vehicle with respect to the magnetic belt tends to increase, such as deceleration sections, downhill sections, or depending on conditions, uphill sections. One of the features is that the drive wheel of the belt conveyor unit is located on the entry side in the direction of vehicle entry, and the driven wheel is located on the exit side. The drive wheels of the belt conveyor unit are located on the exit side in the direction in which the vehicle enters, and the drive wheels of the magnetic belt conveyor unit are positioned on the exit side in the direction in which the vehicle enters, and furthermore, in sections where the relative speed of the vehicle with respect to the magnetic belt is likely to be slow, such as acceleration sections or uphill sections, the drive wheels of the magnetic belt conveyor unit are positioned. The magnetic belt conveyor unit is positioned on the exit side in the direction in which the vehicle enters, and the positions of the driving wheels and driven wheels of the magnetic belt conveyor unit are changed according to each section, so that the magnetic belt is given slack due to the difference in relative speed. The applied force is transmitted as regenerative force from the drive wheels of the unit to its drive motor in any section of the line, thereby effectively preventing the magnetic belt from sagging.

To give an example of the present invention, the overall configuration of the magnetic continuous transportation system is shown in, for example, Japanese Patent Publication No. 55-20902. 1 schematically illustrates an arrangement of belt conveyor units.

Fig. 1 is a schematic diagram showing the arrangement of magnetic belt conveyor units and vehicle speed patterns in a deceleration section superimposed, and Fig. 2 is a similar schematic diagram in an acceleration section. 3 is a vehicle running on the road, 3 is a magnet device installed in the vehicle, and 4a, 4b, 4c, 4d, and 4e are magnetic belt conveyor units, respectively. In each magnetic belt conveyor unit, an endless magnetic belt 7 having a structure as proposed in the invention of Japanese Patent Application No. 57-99353 is wound between a driving wheel 5 and a driven wheel 6. Tension is applied in the direction of increasing the length, and a small slack shaft 8 is arranged to support and guide the magnetic belt 7 to prevent the belt from sagging. Each drive wheel 5 is driven by an induction motor 8 with a reduction gear, and each drive wheel 5 is driven by an induction motor 8 with a reduction gear, and the respective magnetic belt conveyor units 4a, 4b, 4c, 4d,
4e has its own velocity Va, Vb, Vc, Vd,
Ve is set.

Here, in the deceleration section shown in Figure 1, unit 4
The relationship between the speed Va of unit a and the speed Vb of unit 4b is
Va>Vb. For example, the speed in the deceleration section
The vehicle 2 being driven by the unit 4a of Va has a velocity of
The vehicle is traveling in synchronization with Va, and when the vehicle reaches the next unit 4b in the direction of travel, it synchronizes with the speed Vb. At this time, vehicle 2 approaching unit 4b directly
When the speed of the unit 4b is higher than Vb, the magnetic belt 7 of the unit 4b receives a force that tries to increase its rotation speed, but in the present invention, this force becomes a tensile stress inside the magnetic belt 7 and is applied to the drive wheel 5. transmission, electric motor 8
Since the magnetic belt 7 is supported by the rotating system of the drive wheels 5 including the magnetic belt 7 or absorbed as regenerative power of the electric motor 8, the magnetic belt 7 does not slacken. This is true not only for the deceleration section of the flat section shown in Fig. 1, but also for the first magnetic belt conveyor unit in the section of lower speed rank next to the acceleration section of the flat section. The present invention may be similarly applied to a magnetic belt conveyor unit where the relative speed of a vehicle subjected to acceleration due to a gravitational component in a downhill section becomes faster than a preset unit speed.

On the other hand, in Figure 2, Vc<Vd<Ve, and the vehicle accelerates each time it crosses a unit, but in this case, the speed of vehicle 2 immediately after entering each unit becomes slower than the speed level of that unit. Therefore, a force corresponding to the speed difference acts on the magnetic belt in a direction that slows down its rotation. Therefore, in the acceleration section as shown in Fig. 2, the driving wheel 5 is positioned on the exit side in the vehicle traveling direction, and the force corresponding to the speed difference is similarly transmitted to the driving wheel 5 as a tensile stress inside the magnetic belt. This prevents the magnetic belt from sagging and enables power regeneration. The same thing can be applied to areas other than the acceleration section on the flat section shown in FIG. 2, and for example, the drive wheels may be arranged on the exit side in the vehicle traveling direction even in an uphill section.

As described above, according to the present invention, the magnetic belt is prevented from sagging due to the relative speed difference with the vehicle in any section of the transportation line, and the magnetic belt is prevented from sagging due to the relative speed difference that would otherwise cause the sag. It can absorb force or regenerate power, and can effectively suppress noise and vibration caused by sagging of the magnetic belt.

[Brief explanation of drawings]

All drawings show embodiments of the present invention.
FIG. 1 is a schematic diagram showing the arrangement of magnetic belt conveyor units in a deceleration section and the speed pattern of the vehicle superimposed, and FIG. 2 is a similar schematic diagram in an acceleration section. 1: Running path, 2: Vehicle, 3: Magnet device, 4a,
4b, 4c, 4d, 4e: magnetic belt conveyor unit, 5: driving wheel, 6: driven wheel, 7: magnetic belt, 8: induction motor.

Claims (1)

[Claims] 1. A plurality of magnetic belt conveyor units each consisting of an endless magnetic belt stretched between a pair of driving wheels and a driven wheel are arranged along a running path including a slope section and a flat section. A transport line with a predetermined speed pattern consisting of an acceleration/deceleration section, a constant velocity section, and a minimum constant velocity section or a stop section is configured by the ground side drive system of the conveyor unit, and is attracted to the magnetic belt of the conveyor unit. In a ground-side drive device in a magnetic continuous transportation system in which a vehicle equipped with a magnet is disposed on the transportation line and is caused to travel by following the movement of the magnetic belt using a magnetic attraction force, Ground side drive in a magnetic continuous transportation system, characterized in that the driving wheels of the magnetic belt conveyor unit in the section where the speed is to be increased are located on the entry side in the vehicle entry direction, and the driven wheels are located on the exit side. Device. 2 A plurality of magnetic belt conveyor units each consisting of an endless magnetic belt running between a pair of driving wheels and a driven wheel are arranged along a traveling path including a slope section and a flat section, and these conveyor units drive the ground side. A vehicle that configures a transportation line with a predetermined speed pattern consisting of an acceleration/deceleration section, a constant velocity section, and a minimum constant velocity section or a stop section depending on the system, and is equipped with a magnet that attracts the magnetic belt of the conveyor unit. In a ground-side drive device in a magnetic continuous transportation system, which is arranged on the transportation line and runs by following the movement of the magnetic belt with magnetic attraction force, the relative speed of the vehicle with respect to the magnetic belt tends to increase. In the section, the drive wheels of the magnetic belt conveyor unit are located on the entry side in the vehicle entry direction, and in the section where the relative speed of the vehicle with respect to the magnetic belt is about to slow down, the drive wheels of the magnetic belt conveyor unit are located on the entry side in the vehicle entry direction. The magnetic continuous transport system according to claim 1, characterized in that the positions of the driving wheels and driven wheels of the magnetic belt conveyor unit are changed according to each section so that they are located on the exit side. Ground side drive unit.