JPH0354764B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a device for measuring the outer diameter of a side tire of a running device for a guided rail car equipped with pneumatic rubber tires.

[Background of the invention]

Generally, in a monorail vehicle or the like, the traveling device is covered with a skirt to prevent the noise generated from the traveling device from propagating outside when the vehicle is running. (Japanese Unexamined Patent Publication No. 51-61918) On the other hand, in so-called side tires such as the guide wheels and stability wheels of the traveling device of the monorail vehicle, etc., the pressure force management of the tire is determined by the outer diameter of the pressed part of each tire. was manually measured to calculate the amount of deflection, and this was used to roughly estimate the pressing force, which had the disadvantage that it was not possible to quantitatively obtain an appropriate pressing force. Furthermore, since the traveling device is covered with a skirt as described above, there is a drawback that the measurement operation described above is complicated and the workability is poor. The problems caused by the magnitude of this pressing force are that if the pressing force is small, the running stability of the vehicle will deteriorate, and if it is large, the running resistance will increase, making it less economical, as well as increasing tire noise. Pollution will become worse.

[Purpose of the invention]

An object of the present invention is to automatically measure the amount of tire deflection, that is, the outer diameter of the deflected portion, when the tire is stopped, thereby making it possible to easily manage the pressing force of the tire, thereby improving safety and economy. An object of the present invention is to provide a device for measuring the outer diameter of a side tire, which can improve the performance.

[Summary of the invention]

The present invention provides a movable plate provided at a position corresponding to each side tire of an inspection track, a support means for supporting the movable plate so as to be movable in a pressing direction of the side tire, and a surface of the movable plate and a side surface of the inspection track. and a movement amount detector that detects the amount of movement relative to the object.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. In the figure, reference numeral 1 denotes a vehicle body, which is supported on a track 4 via a bogie 3. In addition,
The outer periphery of the truck 3 is covered with a skirt (not shown). 5 is a driving tire that constitutes the traveling device 3;
Driven by an electric motor. 6 is a guide tire, 7 is a stabilizing tire (hereinafter, these guide tires and stabilizing tire 7 are collectively referred to as side tires). Pneumatic rubber tires are used to improve comfort. 8 is an inspection track for measuring the pressing force of the side tires 6 and 7; 9 is a movable plate provided on the inspection track 8 at a position corresponding to the side tires 6 and 7;
It is connected to a piston of a hydraulic cylinder 11 through a rod and a piston, and is supported by the hydraulic cylinder 11 so as to be movable in the pressing direction of the side tires 6 and 7, that is, in the direction of the center of the inspection track 8. 12
is the pin 1 on the back side of the movable plate 9 in the same way as the above rod.
This bar is attached via a bar 0' and is inserted into a support 13 attached to the inspection track 8 to facilitate the movement of the movable plate 9. 1
Reference numeral 4 denotes an inspection switch provided on the movable plate 9 and the inspection track 8, and is installed so that the circuit is closed when the surface of the movable plate 9 and the side surface of the inspection track 8 coincide.
A resistor 15 measures and detects the amount of movement of the movable plate 9 with respect to the inspection track 8. The amount by which the movable plate 9 moves relative to the side surface of the inspection track 8 is the amount of deflection of the tire. 16 is a hydraulic pump, 17 is a switching valve, 18 is a relief valve that operates when excessive pressure is applied, and 19 is an oil tank, which operates the hydraulic cylinder 11. 20 is a digital load meter which converts the pressure on the pressure oil supply side when the hydraulic cylinder 11 is extended into a load and displays it.

In such a configuration, when measuring the outer diameter, that is, the amount of deflection, of the side tires 6, 7, first supply pressure oil to the hydraulic cylinder 11, align the surface of the movable plate 9 with the side surface of the inspection track 8, and measure the side surface of the side tires 6, 7. The vehicle is stopped so that the side tires 6 and 7 correspond to the movable plate 9 of the inspection track 8. After that, when the pressure oil in the hydraulic cylinder 11 is discharged by operating the switching valve 17, the movable plate 9 moves toward the center of the track because the side tires 6 and 7 are pressed toward the center of the track by a constant pressing force. The vehicle stops when the side tires 6 and 7 become unloaded. The movement amount L dimension at this time is resistor 15
Detect with. This L dimension is the side tires 6, 7.
is the amount of deflection. In addition, if the L dimension in the state shown by the two-dot chain line in FIG. 2, that is, the state in which it is pressed with a constant pressing force, is measured using a light receiver, etc., and added to the above-mentioned L dimension, the true side surface tire can be determined. An outer diameter of 6 or 7 can be obtained.

According to such a configuration, when the vehicle is stopped so that the side tires 6, 7 correspond to the movable plate 9 as described above, the amount of deflection of the side tires 6, 7 due to the pressing force can be automatically measured. Since the amount of deflection changes in direct proportion to the pressing force of the side tires 6, 7, the pressing force can be determined from this amount of deflection.
Therefore, by detecting and managing the amount of deflection as described above, the pressing force of the side tires 6 and 7 can be appropriately managed. As a result, safety can be improved, and the running resistance of the vehicle can be prevented from increasing, so that economical efficiency can be improved. In the above description, the hydraulic cylinder 11 was used to move the movable plate 9, but the present invention is not limited to this, and mechanical devices such as a rack and pinion or a screw may be used. The above operation can also be performed with a similar configuration. Further, in the above embodiment, an example of a rectangular monorail vehicle has been described, but the present invention is suitable for a vehicle that has guide wheels etc. on both sides of the vehicle body and runs on a guide track. The examples are not limited.

〔Effect of the invention〕

As explained above, according to the present invention, the amount of deflection of the side tire can be detected while the vehicle is stopped on the inspection track, and thereby the pressing force of the side tire can be easily managed, thereby improving safety and economy. You can improve your sexual performance.

[Brief explanation of drawings]

FIG. 1 is a side view showing a monorail vehicle running gear placed on an embodiment of the outer diameter measuring device according to the present invention, FIG. 2 is a sectional view taken along line XX in FIG. 1, and FIG. FIG. 2 is a hydraulic circuit diagram of the outer diameter measuring device of FIG. 1; 6, 7...Side tire, 8...Inspection track, 9...
...Movable plate, 11...Hydraulic cylinder, 14...Inspection switch, 15...Resistor.

Claims (1)

[Claims] 1. A movable plate provided at a position corresponding to each side tire of the inspection track, supporting means that supports the movable plate so as to be movable in the pressing direction of the side tire, and a relative relationship between the movable plate surface and the inspection track side surface. 1. A side tire outer diameter measuring device comprising: a movement amount detector for detecting a movement amount.