JPS62171403A - Conveying equipment utilizing linear motor - Google Patents

Abstract

PURPOSE:To prevent a primary coil and a secondary conductor of a body side from contacting to damage by providing the primary coil or the secondary conductor in the state that they are disposed at the lower side of the secondary conductor or the primary coil provided at a guide rails side. CONSTITUTION:A conveying body having wheels 1 is movably supported to guide rails A, and driven by a liner motor. The motor has a primary coil C at the body side, and a striplike secondary conductor P at the rails A side. In this case, the conductor P at the rails A side. In this case, the conductor P is composed in a composite type of a nonmagnetic material P1 formed on the lower side of the rail A and a magnetic material P2 to be inserted into cavities 4 formed on a lower wall so as to generate a high thrust. The material P2 is secured by a wedge 5 to absorb the longitudinal extension and contraction difference from the rail A. Thus, even if the wheels 1 are worn, it can eliminate the possibility of contacting damage of the coil C with the conductor P.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a guide rail on which a transport vehicle body having traveling wheels is movably supported, and a linear motor for driving the vehicle body. Concerning conveyance equipment using linear motors.

[Conventional technology]

This kind of conveyance equipment using a linear motor described above can move the conveyance vehicle body at high speed with a simple configuration, so the conveyance equipment is constructed using a linear motor as the driving force for moving the conveyance vehicle body. It is something.

When running a car body using a linear motor, the structure of the car body becomes simple when reducing the weight of the car body or transporting relatively light objects, so a secondary conductor is provided on the car body side.
The primary coil will be installed on the guide rail side, and on the other hand,
When a large driving force is required to transport a relatively heavy object or when a high transport speed is desired, a primary coil is provided on the vehicle body side and a secondary conductor is provided on the guide rail side.

By the way, when a linear motor is used to drive a car body, the narrower the distance between the primary coil and the secondary conductor, the larger the propulsive force i′ can be generated. The above-mentioned distance is maintained by utilizing the fact that the guide rail supports the guide rail. For example, the fourth
As shown in the figure, when a primary coil (C) is provided on the vehicle body (V) side and a secondary conductor (P) is provided on the guide rail (A) side, the secondary conductor (P) of the primary coil (C) ) is regulated by the traveling wheels (1).

Conventionally, for example, in the case shown in FIG.
Guide the primary coil (C) or secondary conductor (P) on the vehicle body (V) side, such as by positioning the primary coil (C) on the vehicle body side above the secondary conductor (P) provided on the guide rail (8). It was arranged to be located above the secondary conductor (P) or primary coil (C) on the rail (8) side.

Incidentally, the distance between the primary coil (C) and the secondary conductor (P) is usually about 2 fl or less.

[Problem that the invention seeks to solve]

When maintaining the distance between the primary coil and the secondary conductor in the running wheel, if the diameter of the running wheel becomes smaller due to wear due to use, the distance between the primary coil and the secondary conductor will fluctuate. The vehicle wheels will be replaced with new travel wheels in a timely manner.

In the above conventional configuration, as the diameter of the traveling wheels becomes smaller, the above-mentioned interval becomes narrower.
It is necessary to replace the wheels accurately to avoid damage caused by contact between the primary coil and the secondary conductor, but there is a risk of forgetting to replace the wheels and causing the above problems, so improvements need to be made. There was room for.

The present invention has been made in view of the above circumstances, and its purpose is to prevent contact damage between the primary coil and the secondary conductor by improving the positional relationship between the primary coil and the secondary conductor. The purpose is to do so.

[Means for solving problems]

A characteristic configuration of the conveyance equipment using a linear motor according to the present invention is that the primary coil or secondary conductor on the vehicle body side is positioned below the secondary conductor or primary coil provided on the guide rail side. Its functions and effects are as follows.

[For production]

In other words, by arranging the primary coil or secondary conductor on the vehicle body side below the secondary conductor or primary coil provided on the guide rail side, the running wheels may wear out and become attached to the guide rail. Even if the vehicle body is lowered, the distance between the primary coil and the secondary conductor increases.

〔Effect of the invention〕

Therefore, even if the running wheels wear out, the distance between the primary coil and the secondary conductor changes to a safe distance from each other. As a result, there is no risk of contact damage.

As a result, even if you forget to replace the running wheels, contact damage between the primary coil and the secondary conductor can be avoided, and the vehicle can be used satisfactorily for a long period of time.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

As shown in FIGS. 1 and 2, a guide rail (A) is provided on which a transport vehicle body (CV) having traveling wheels (1) is movably supported, and the vehicle body (V) is moved by a linear motor. The structure is such that articles can be transported while being driven by.

To configure the linear motor, a primary coil (C) is provided on the vehicle body m (!I!1), and a secondary conductor (P) is provided on the guide rail (8) side, and the primary coil (C) is located below the secondary conductor (P).

Hereinafter, the configuration of each part will be explained in detail based on FIGS. 1 to 3.

The guide rail (A) is formed to have a substantially U-shaped cross section, and the running wheels (
1) is provided, and a groove (2) is provided on the side surface of the inner wall to supply power to the primary coil (C) on the vehicle body side and various devices installed in the vehicle body (V) using three-phase alternating current. Electric a (
Three power supply trolley rails (E)
3a) and the control sieve signal from the central controller (B) on the ground side.
Five trolley rails (3) consisting of two signal trolley rails (3b) for transmission and reception between the control device (D) on the vehicle body side and the control device (D) on the vehicle body side are arranged in the vertical direction.

In order to provide the secondary conductor (P) on the guide rail (A), the guide rail (A) is made of a non-magnetic material such as aluminum, and the lower surface thereof is made of a non-magnetic material for forming the secondary conductor (P). This guide rail (A)
Cavities (4) extending along the longitudinal direction are formed at two locations on the left and right sides of the lower wall of the guide rail (A). Then, a magnetic material (P2) such as iron for forming a secondary conductor is inserted into this cavity (4) from the end side of the guide rail (A), and a wedge is inserted from the lateral direction of the guide rail (A). (5) is inserted into an appropriate location, and the magnetic material (P2) is fixed in a state that allows the guide rail (A) to expand and contract in the longitudinal direction.

That is, the secondary conductor (P) is connected to the non-magnetic material (Pl) formed on the lower surface of the guide rail (A) itself, and the magnetic material (Pl) inserted into the cavity (4) provided in the lower wall thereof. P2) is constructed in a so-called composite type to generate high thrust.

Furthermore, by fixing the magnetic material (P2) to the guide rail (A) from the lateral direction with a wedge (5), the coefficient of thermal expansion between the magnetic material (P2) and the guide rail (A) can be reduced. The difference in expansion and contraction in the longitudinal direction of the guide rail (A) due to the difference in the length of the guide rail (A) is absorbed by the relative movement of the magnetic material (P2) and the guide rail (A) in the longitudinal direction.

Note that the expansion and contraction of the guide rail (A) and the magnetic material (P2) in the width direction can be ignored since the distance is short;
The width of 4) may be made slightly wider than the width of the magnetic material (P2) to be inserted to absorb expansion and contraction.

To configure the transport vehicle body (v), main frames (6) having a substantially U-shape in front view are provided at each of the front and rear ends of the vehicle body, and the main frames (6) are connected to each other. A connecting frame (68) is provided. and,
A carrier (7) for transporting articles whose main parts are front and rear members formed by bending a pipe-shaped member into a substantially U-shape when viewed from the front.
It is located at the bottom of the vehicle.

Further, the primary coil (C) is connected to the connection frame (6A
), and even if an attractive force is generated between the secondary conductor (P) and the primary coil (C), the primary coil (
C) so that it does not come into contact with the guide rail (A).
As the vehicle body (V) moves up and down, the primary coil (C) and the secondary conductor (P) come into contact with the lower surface of the outer wall of the guide rail (A).
) is provided below the traveling wheels (1) for regulating the distance between the two wheels (8).

In other words, even if an attractive force is generated between the primary coil (C) and the secondary conductor (P), the spacing regulating wheel (8)
Since the distance between the primary coil (C) and the secondary conductor (P) can be suppressed so that it does not approach below the set value, the primary coil (C)
Even if there is some error in the assembly of the secondary conductor (P) to the vehicle body (v) and the assembly of the secondary conductor (P) to the guide rail (A), it does not pose a problem.

Further, the traveling wheels (1) are attached to the vertically intermediate portion of the support frame (6), and the guide rails (
A pair of left and right guide rollers (10) that come into contact with protrusions (9) provided at the upper and lower ends of the opening side of A) from both left and right sides to prevent the vehicle body (V) from falling off the guide rail (A).
are provided at the upper end of the support frame (6) and on both front and rear sides of the traveling wheel (1). In addition, in the figure, (1
1) is a current collector for the trolley rail (3) provided on the lateral side of the inner wall of the guide rail (A).

Furthermore, one of the pair of front and rear running wheels (2) includes:
An electromagnetic brake (12) is provided, which is in a braking state when the power is not applied, and is in a non-active state when the power is applied, and a rotary encoder (13) is provided on the other hand to detect the rotational speed, that is, the running speed and distance traveled. It is provided.

The central control device (B) and the vehicle body side control device (D) are connected via the two signal trolley rails (3b).
While exchanging information with the guide rail (A) based on the information detected by the rotary encoder (13),
The position and running speed of the vehicle body (v) relative to the vehicle body (v) are detected, and energization of the primary coil (C) and the electromagnetic brake (12) is controlled to start, accelerate, and decelerate the vehicle body (v) at a desired position. The system is configured so that both of these operations can be performed automatically. In order to control the energization to the primary coil (C), this embodiment uses a voltage control method in which the voltage applied to the primary coil (C) is varied to adjust acceleration/deceleration and running speed.

In addition, since the electromagnetic brake (12) is designed to be activated when the power is not energized, it is possible to automatically stop the vehicle body in the event of an emergency such as a power outage for safety. The vehicle body (v) traveling can be stopped at a desired position with high precision.

[Another example]

In the above embodiment, the primary coil (C) is provided on the car body side and the secondary conductor (P) is provided on the guide rail side. A primary coil (C) may also be provided. In that case, the primary coil (C) may be provided over the entire length of the guide or rail (A), or a primary coil may be provided at every predetermined distance and the primary coils may be slid by inertia between the primary coils. good.

Furthermore, in the above embodiment, the vehicle body (
Although an example has been shown in which the vehicle body m is supported in a suspended manner, the present invention can also be applied to a case where the vehicle body m is configured to run on guide rails. However, in order to prevent the distance between the primary coil and the secondary conductor from getting too close, the primary coil or secondary conductor on the vehicle body side should be located below the secondary conductor or primary coil provided on the guide rail side. That's fine.

In addition, the secondary conductor (P) may be constructed of a so-called composite type in which a non-magnetic material and a magnetic material such as iron are layered to obtain high thrust, or only non-magnetic material such as aluminum may be used. , it may be constructed using only magnetic material. Furthermore, the guide rail (A) itself may be formed of a non-magnetic material or a magnetic material by injection molding or the like, or it may be formed into a desired shape by press processing to serve as a secondary conductor, or the guide rail ( The primary coil ( It may be provided at a position opposite to C).

[Brief explanation of drawings]

1 to 3 show an embodiment of the conveyance equipment using a linear motor according to the present invention, and FIG. 1 is a side view of the conveyance equipment, and FIG.
The figure is a front view thereof, and FIG. 3 is an enlarged sectional view of the guide rail. FIG. 4 is a schematic cross-sectional view showing a conventional example. (1)...Travelling wheel 1, (V)...
Vehicle body, (A)...Guide rail, (C)...
...Primary coil, (P) ...Secondary conductor.

Claims (1)

[Claims] A transport facility using a linear motor, which is provided with a guide rail (A) on which a transport vehicle body (V) having traveling wheels (1) is movably supported, and is equipped with a linear motor for driving the vehicle body (V). The primary coil (C) or secondary conductor (P) on the vehicle body side is located below the secondary conductor (P) or primary coil (C) provided on the guide rail side. Conveyance equipment that uses linear motors.