JP2973741B2 - Rail transport trolley - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rail carriage driven by a linear motor, and more particularly to a position and speed detecting means for controlling traveling.

[0002]

2. Description of the Related Art A rail transport trolley, which is driven by a linear motor having a primary side arranged on the ground and a secondary conductor provided on a trolley side and transports articles, has been put to practical use.
This type of rail transport vehicle travels between stations along rails and transports articles from station to station.

[0003] In some cases, the rail has a curved portion. In this case, the vehicle body is divided into three portions, a front portion, a center portion, and a rear portion. I am able to follow. The wheels are mounted on the front and rear to steer, change the running direction according to the curve, and the front and rear change posture with the wheels.

On the other hand, an intermittent operation in which a traveling magnetic field is generated is performed only when a truck is present, instead of being constantly supplied with power to a primary side arranged on the ground. Therefore, it is necessary to detect the position of the cart and to detect the speed of the cart for speed control of the cart. A position sensor and a speed sensor, which are optical sensors, are arranged on the ground side, and a shield plate and a slit plate are provided on the cart side. Power is supplied to the primary side only when the optical axis emitted by the position sensor is interrupted, and the speed is detected and supplied by counting how many times per hour the optical axis emitted by the speed sensor is interrupted by the slit plate. Power is adjusted.

[0005]

The shielding plate and the slit plate provided on the truck divided in the front-rear direction must be divided and attached to each divided part in a horizontal posture. This is because the divided parts of the vehicle body are connected so as to be rotatable about a vertical axis.
For this reason, the optical axis of each sensor runs in the vertical direction. However, when approaching the curved part, a gap is created between each of the divided shielding plates and slit plates,
There was a disadvantage that the power supply to the primary side was stopped and the speed could not be controlled.

Accordingly, an object of the present invention is to provide a bogie divided into a plurality of portions in the front-rear direction to cope with a curve,
It is an object of the present invention to provide a rail transport trolley provided with means capable of reliably detecting a position and a speed.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention divides a vehicle body into a plurality of portions in the front-rear direction to run on a rail including a curve, and rotates each portion about a vertical axis. In the waist-folding type rail transport trolley which is connected as possible, the detected means of the position and speed extending in the front-rear direction of the vehicle body provided respectively in each part may be partially overlapped in the vertical direction at each connection part. The rail carrier was constructed.

[0008]

The present invention has the above-described structure, and has the following effects.

In the rail transport cart according to the present invention,
Each part of the vehicle body divided into a plurality of parts in the front-rear direction is provided with a position and speed detection means extending in the front-rear direction of the vehicle body so as to respectively correspond to the position and speed detection means arranged on the ground. Have been. Each detected means,
Each connection part partially overlaps in the vertical direction. Therefore, even if each of the divided portions of the vehicle body rotates toward each other while approaching the curved portion, no gap is generated,
The position and speed of the vehicle body can be reliably detected.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiment shown in the drawings will be described below.

FIG. 1 is an enlarged perspective view showing only a part of a shielding plate and a slit plate portion in an embodiment of a rail transport vehicle according to the present invention, and FIG. 2 is a perspective view showing the same embodiment in its entirety. FIG. 3 is a perspective view showing the structure of a part of a rail on which the same embodiment runs.

In FIG. 2, a buckle-type rail carrier 1 is provided with a table 12 above a flat body 11 and a secondary conductor 2 below. The secondary conductor 2 has a front part 21,
It consists of three aluminum plates, a central part 22 and a rear part 23. The central part 22 is fixed to vertical shafts 13 and 14 extending downward from the fuselage 11, the front part 21 is around the axis 13, and the rear part 23 is an axis. Each of them can rotate around 14.

The bearings 33, 34 on which the running wheels 31, 32 are bearing are rotatable about vertical shafts 13, 14, respectively, and have a front part 21 and a rear part 23, respectively. Therefore, the bearings 33 and 34 are steered integrally with the front part 21 and the rear part 23, respectively, following the curve path.

Between the secondary conductor 2 and the fuselage 11, shielding plates 411, 412, 413 for position detection and slit plates 421, 422, 423 for speed detection are provided, respectively. The shielding plates 411 and 413 and the slit plates 421 and 423, which are the front and rear portions, can be rotated together with the bearings 33 and 34, respectively.

As shown in FIG. 3, the rail 5 on which the rail carrier 1 travels is a hollow, substantially quadrangular prism having a hole 51 extending in the longitudinal direction on the upper surface thereof.
Connects between the body 11 and the secondary conductor 2 through the space between the holes 51. A primary side 6 is provided at the bottom of the rail 5.

A position detecting sensor 5 is provided inside the rail 5.
2, a speed detection sensor 53 is provided, and shield plates 411, 412, 413, slit plates 421, 42 are provided, respectively.
2, 423. Position detection sensor 52, speed detection sensor 53, load detection sensor 5,
Reference numerals 4 and the like are arranged at various places on the rail 5 such as near the station.

The position of the rail carriage 1 is determined by a position detecting sensor 52, which is a horseshoe-shaped photoelectric sensor, and a shielding plate 41.
1, 412 and 413, the speed is detected by the speed detection sensor 5
3 and the slit plates 421, 422, 423, respectively. That is, the rail transport vehicle 1 travels and the shielding plates 411, 412, and 413
The position is detected by turning off the optical axis of
When the rail transport vehicle 1 passes through the place where the speed detection sensor 53 is disposed, the speed is detected based on how many times per hour the optical axis of the speed detection sensor 53 is blocked by the slit plates 421, 422, 423.

Position detecting sensor 52 and speed detecting sensor 5
Numeral 3 is connected to a control device (not shown) of the primary side 6, and when the position detection sensor 52 detects the presence of the rail transport vehicle 1, the primary side 6 is supplied with electric power and detects speed. The speed is controlled by changing the frequency of the AC power supplied to the primary side 6 according to the speed detected by the sensor 53.

As shown in FIGS. 1 and 4, the divided shielding plates 411 and 412 and the slit plates 421 and 422 partially overlap in the connecting portion in the vertical direction. for that reason,
Even if the wheel 31 is steered in the car portion and the shielding plate 411, the slit plate 421, and the shielding plate 412, the slit plate 422 rotate about the vertical axis A, there is an overlapping portion in the vertical direction. Therefore, there is no gap. For example, even if the shielding plate 411 rotates like 411a, there is no gap between the shielding plate 411a and the shielding plate 412.

Therefore, the position detecting sensor 52 is
It does not turn on at the connection part of 1,412,
No false detection occurs. Also, the speed detection sensor 53 can continue to detect the speed.

The embodiments of the present invention have been described above.
It is needless to say that the present invention is not limited to the above-described embodiments, and can be appropriately modified and implemented within the scope of the present invention.

[0022]

As described above, according to the rail transport vehicle of the present invention, erroneous detection does not occur in the position detection and the speed detection at the curved portion, so that the primary side control can be accurately performed. .

[Brief description of the drawings]

FIG. 1 is a perspective view showing a part of a shield plate and a slit plate portion of an embodiment of a rail transporting cart according to the present invention.

FIG. 2 is a perspective view showing the entire bogie of the same embodiment as FIG. 1;

FIG. 3 is a perspective view showing a structure of a rail in the same embodiment as FIG. 1;

FIG. 4 is a side view showing a shielding plate portion of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rail conveyance trolley 411, 412 Shielding plate 421, 422 Slit plate 52 Position detection sensor 53 Speed detection sensor A axis

Claims (1)

(57) [Claims] 1. To travel on a rail including a curve,
In a waist-folding type rail transport vehicle in which the vehicle body is divided into a plurality of parts in the front-rear direction and each part is rotatably connected around a vertical axis, each of the position and speed of the vehicle body provided in each part extending in the front-back direction A rail transport trolley characterized in that the detected means partially overlap in a vertical direction at respective connection portions.