JPS58139602A - Conveying apparatus - Google Patents

Abstract

PURPOSE:To obtain a high accelerating or decelerating property by associating two drive means installed at different installing positions at the primary and secondary sides of a linear motor. CONSTITUTION:In an accelerating region P1, AC power is supplied to the inductors 3b, 4b of accelerating or decelerating linear motors 3, 4 to provide sufficient thrust force for bearing the acceleration at the starting time to a truck 2. When the truck 2 moves into a high speed control region P3, power is supplied through a trolley wire 7 and a current collector 8 from a power supply 6 to the inductor 5b of the high speed controlling linear motor 5. When the truck 2 reaches the decelerating region P2, the moving magnetic field is generated in the direction for applying brake force to the truck 2 at the inductors 3b, 4b of the motors 3, 4, respectively. In this manner, an article conveying apparatus which can control to move at the constant speed can be obtained at the high speed moving time with high accelerating or decelerating property.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention particularly relates to a conveying device using a linear motor.

-a Linear motors (induction type linear motors) are used in many fields as power sources for article conveyance devices. The reason for this is the so-called non-adhesive drive that generates direct linear thrust without contact.For example, in automatic 4I1 trains, the frictional force between the rotating body and the road surface (or rail) causes the friction force between the rails and the adhesive drive system. This is because, unlike the conventional method, there is no room for slippage and high acceleration/deceleration performance can be easily achieved.

By the way, the running characteristics of the conveyor means based on a linear motor depend on whether the winding side (primary side for generating a moving magnetic field) or the conductor plate side (secondary side) is placed on the ground or directly on the ground. For example, if you want to obtain deceleration characteristics for open use, the primary side is placed on the ground and the secondary side is attached to the conveyance device.In other words, only the lightweight secondary side moves with the conveyance device. However, in this near-motor transport means, where the primary side of the ground eyelid is arranged, the state of the moving magnetic field from the ground applied to the running secondary conductor cannot be maintained constant. However, the thrust force obtained by the conveying device is not uniform and the speed cannot be maintained at a constant speed.

Therefore, when traveling at a constant speed over long distances, a secondary conductor with a length equivalent to the traveling distance of the conveyor device is installed on the ground, and the moving magnetic field generating part on the primary side of the linear motor is connected to the conveyor device. Highly accurate constant speed performance can be obtained by running the vehicle along with the vehicle and controlling the speed by feedback. However, the primary side of a linear motor is usually heavier than the secondary side, so the primary movement method is
Compared to the next movement method, the acceleration mass is inferior. Therefore, in order to make the high-speed region as long as possible and increase the acceleration driving force of the linear motor, a large-capacity linear motor was used. In order to accelerate and decelerate the primary side, which occupies the primary side, there has been a tendency to have to provide a linear motor that provides a very large thrust.

The purpose of this invention is to skillfully combine two driving means in which the primary side and secondary side of the linear motor are installed in different locations, thereby achieving high acceleration and constant speed in the high speed range. An object of the present invention is to provide an article conveyance device whose travel can be controlled.

Hereinafter, the illustrated embodiment will be specifically described. 1st
The figure is a front view of a conveyance device implementing this invention, and a side view showing the lvC along the direction of movement of the near motor on the ground side (FIG. 2) and the arrangement state of the secondary side. In each figure, l denotes a rail, which is laid along the transport route of the trolley 2. Then, the platform ratio 2 includes the transported object, the mounting base 2a,
It consists of a guide wheel 2b for the rail 1.

'3 and 4 are linear near motors, each consisting of secondary conductors 3a, 4a attached to the heat sink on the second side, and primary conductors 3b, 4b installed on the ground side. By the way, the near motors 3 and 4 are related to the adjustment of the platform ratio 2, and the arrangement of the inductors 3k) and 4b on the ground side in the direction of movement of the bogie 2 is determined by the required amount of acceleration/deceleration of the steering wheel as shown in FIG. #ICP1. It is P2. Reference numeral 5 designates a linear motor, which is composed of a primary inductor 5a placed on the 2nd side, and a secondary conductor 5a placed on the ground side.The arrangement of the secondary conductors 5a is shown in Figure 2. As shown in FIG. 2, the control may be applied to the entire traveling range of vehicle rate 2, or may be limited to only the high-speed control region ps, excluding the acceleration/deceleration regions PI and P2.

Reference numeral 6 denotes a power supply device that applies an alternating current voltage to a power supply line 7 disposed along the rail 11 that regulates the running of the trolley 2. Reference numeral 8 denotes a power supply device, which is installed at a rate of 2I, receives power from the power supply line 7, and transmits it to the primary inductor 5 of the linear motor 5.
leading to b.

In the configuration of the upper bar C embodiment, it is assumed that the transport device trolley 2 is located in the acceleration region P1. At this time, when AC power is supplied to the inductor Q4b of the linear motors 3 and 4 (adjustment linear motor), a moving magnetic field is generated from the inductors 3b and 4b, and this moving magnetic field and this
Based on the interaction with the eddy current generated by acting on 44a, sufficient thrust is given to the bogie 2 to bear the acceleration force at the time of starting. As a result, an increase in speed as shown in FIG. 3 Φ can be obtained. Then, when the truck 2 moves to the high-speed control area P5 after obtaining a sufficient speed, the near motor 3°4
The primary inductor Q41) is not present, so the linear motors 3, 4 do not work. - The lJ near motor 5 for power and high-speed control receives power from the power supply device 6 via the power supply line 7 and the power supply device 8 when the vehicle rate 2 advances to the high-speed control region psc,
A moving magnetic field is generated from the inductor 5b, and thrust is obtained using the same principle as in the case of the upper pilinar motors 3 and 4, and the bogie 2
progresses. At this time, the running speed of the bogie 2 can be fed back by a speed generator or a pulse pickup, and the voltage applied to the inductor 5b can be controlled so as to reach the set speed. Next, when the vehicle rate 2 reaches the deceleration region P2, the inductor 3b of each adjustment linear motor 3, 4
, 41), a moving magnetic field is generated in a direction that applies a braking force to the truck 2. As a result, the speed of the vehicle rate 2 rapidly decreases and stops as shown in FIG.

Further, when it is desired to convey the cart 2 in the same force direction as before, the linear motors 3 and 4 are operated for acceleration to increase the speed, and then the linear motor 5 for high-speed control is operated. By repeating this operation, the trolley 2 is conveyed while stopping at several stations.

In the above embodiment, the adjustment and subtraction operation is carried out by the near motor of the type where the inductor is placed on the ground, and the high-speed constant speed control after acceleration is carried out by placing the movable side inductor or carried by the near motor. Although we have described a configuration in which the For example, a linear motor for high constant speed control may be operated simultaneously during acceleration/deceleration to promote the continuous acceleration/deceleration, or the invention may be applied only to either acceleration or deceleration, and only to the point where acceleration or deceleration is required. It is also possible to arrange the primary inductor on the ground.

As described above, the conveying device according to the present invention has an inductor on the movable side and a secondary conductor on the ground side as a means for high constant speed driving, and a near motor as well as an acceleration and/or deceleration device. It is a linear motor with a large capacity (compared to the above-mentioned high constant speed drive linear motor) with an inductor on the ground side and a secondary conductor on the movable side. . Based on this configuration, ■The inductor side, which accounts for most of the weight of the large-capacity linear motor responsible for acceleration and deceleration, is installed on the ground, and the movable side is equipped with a very light secondary conductor (iron plate, aluminum plate). etc.), it is possible to achieve light weight and high acceleration/deceleration performance. @Since the large amount of power required during acceleration and deceleration, which requires high thrust generation, is input from the ground side, there is no room for supplying large power to the movable side, and there is no room for power supply parts (current collectors, etc.) on the movable side. There is no risk of increasing the amount of damage or increasing the weight associated with this. The linear motor, which is responsible for running at a high constant speed, can have a very small capacity because it only needs to generate enough thrust to overcome the running resistance. .@When performing high constant speed control, it is possible to perform feedback control using a linear motor on the ground, and it has unique features such as being able to stabilize constant speed running.

Fig. 1 is a front view showing an embodiment of the present invention, Fig. 2 is a principle diagram showing the arrangement of the near motor on the ground side, and Fig. 3 is a graph showing speed characteristics.

2@Conflict/Unit ratio 3, 4...1st linear motor 5--
11 Second linear motor 3a, 4a @ @ @ Secondary conductor sb, +b --
-B conductor 5a...secondary conductor 5b...applicant Zhao conductor Shinko tl! Co., Ltd. Agent Patent Attorney Haruya Saimo

Claims (1)

[Claims] 1. A first linear motor that is responsible for at least one of acceleration and deceleration is arranged so that its primary side inductor is placed on the ground in the acceleration/deceleration area in the driving direction, and its secondary side conductor is placed on the movable side.
A second linear linear motor, which is smaller than the first linear motor and has a capacity responsible for maintaining high-speed running on the movable side, is installed so that its primary side inductor is on the movable side and its secondary side conductor is on the vibration side. A conveyance 311° characterized by being arranged so as to be respectively arranged on the ground in the transportation area.