JP2003274503A - Trolley height measuring apparatus for carrier truck - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow a trolley height to be measured, even when the trolley is installed sidewise on a carrier truck, so that an abnormal trolley height can be detected early, to prevent troubles from occurring. <P>SOLUTION: A height-measuring sensor 50 is installed on a pantograph 40 in the immediate vicinity of a trolley shoe 42 on the truck in order to measure the height L1 of a pantograph from the ground reference surface 32. An alarm is output when the value measured by the pantograph height measuring senor exceeds a preset safety standard limit. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trolley height measuring device for a carrier truck, and more particularly to a trolley height measuring device for feeding a coil carrier truck on a hot rolling line exit side or a cold rolling line. In addition, the present invention relates to a trolley height measuring device for a carrier truck that can measure the trolley height even when the trolley is installed in the side direction of the truck.

[0002]

2. Description of the Related Art One of the methods for supplying electric power to a carriage that is driven by a motor is a method in which a shoe of a pantograph mounted on the carriage is slidably contacted with a trolley wire arranged on the ground side. In order for the pantograph to make stable sliding contact with this method, it is necessary to always maintain the erection height of the trolley wire at the reference value.

Conventionally, for example, JP-A-5-278502 and JP-A-6-281147 have been proposed as techniques for measuring the height of the trolley.

In these techniques, a trolley located above a train or a car body is irradiated with visible light or laser light upward from the train or car body, and reflected light from the trolley is received. The basic principle is to measure the distance.

[0005]

However, as shown in FIG. 1, when the trolley 20 is installed in the lateral direction of the carrier 10, as in the example of the device according to the existing invention, the trolley is in the upward direction. Therefore, the device according to the existing invention cannot be applied.

Further, as shown in FIG. 1, since the trolley 20 is installed on the vertical wall surface 24 by the support 22, the trolley installation height and the trolley height measurement reference surface, for example, the upper surface of the rail 30 or the ground surface 32. The distance L1 between and is usually as small as about 30 cm. Therefore, there is no space below the trolley 20 to install the device according to the existing invention.

The trolley wire 20 corresponds to each phase,
Since three stages are arranged in the height direction, there is a problem that even if the height is measured from below, only the height of the bottommost trolley wire can be measured.

The present invention has been made to solve the above conventional problems, and an object thereof is to make it possible to measure the height of the trolley even when the trolley is installed in the lateral direction of the carriage.

[0009]

According to the present invention, there is provided a trolley height measuring device for feeding electric power to a carrier truck, in which the height of the pantograph from a ground reference plane is measured on the pantograph closest to the trolley shoe on the truck side. The above problem is solved by installing a sensor.

Further, when the measured value by the pantograph height measuring sensor exceeds a preset maintenance standard limit value, an alarm is output.

Further, a trolley position detection sensor for detecting the traveling position of the trolley is installed, and when the measured value by the pantograph height measuring sensor exceeds a preset maintenance standard limit value, it is regarded as an abnormality and the abnormality is detected. The traveling position of the trolley in which the occurrence has occurred is detected and output by the trolley position detection sensor.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows a carriage 10 equipped with a first embodiment of a trolley height measuring device according to the present invention.
It is the front view drawn simply from the traveling direction of 0. In addition,
Usually, a plurality of trolleys 20 for supplying power to the truck 10 are installed, but in FIG. 1, the number of trolleys 20 is shown as one in order to facilitate understanding of the gist of the present invention. In the figure, 8 is a coil conveyed by the carriage 10.

First, referring to FIG. 1, an outline of the operation of the truck 10 during traveling will be described.

The trolley 10 is driven by a trolley driving device 12 so that the driving force is transmitted to the wheels 16 through the axle 14 and the rail 30.
On the road.

Electric power required for traveling is supplied to the truck 10 from a trolley shoe 42 attached to the tip of a pantograph 40 in contact with the trolley 20.

As shown in detail in FIG. 2, the pantograph 40 has a mechanism which can be vertically moved up and down flexibly by an elongated hole 44A of a trolley-side support rod 44, so that the trolley 20 can be moved up and down. , Can be followed.
In FIG. 2, 46 is a pair of rods that slide in accordance with the lifting and lowering of the support rod 44, 48 is a rod on the trolley shoe 42 side, and the upper ends of the pair of rods 46 are rotated by the trolley side rod 48. Freely supported. Therefore, for example, when the truck 10 moves up, the lower ends of the pair of rods 46 slide in the elongated holes 44A in the left direction in the figure, so that the pantograph 40 moves flexibly according to the elevation of the truck 10.

The pantograph 40 includes the pantograph 4
0 and the pantograph height measurement reference plane (here, the ground plane 3
A range finder 50 capable of measuring the distance between 2) and 2) is attached, and in the example of FIG. 1, the distance to point A can be measured.

Here, the height of the pantograph height measurement reference plane is a floor level (FL), which is a constant height, that is, a fixed value, at an arbitrary point.

Although the range finder 50 is a reflected light detection type sensor by the laser beam 52 in the example of FIG. 1, a range finder of another type may be attached.

Further, L1 in FIG. 1 represents the height from the pantograph height measurement reference surface 32 to the trolley 20.

Below, the trolley 2 from the floor level FL
A method for measuring the height L1 of 0 will be described in detail.

The pantograph 40 moves up and down according to the height variation of the trolley 20. That is, the height of the pantograph 40 is always equal to the height of the trolley 20.

Further, since the rangefinder 50 is fixed to the pantograph 40, the distance to the pantograph measurement reference plane 32 measured by the rangefinder 50 is the pantograph 4
Needless to say, it is equal to the distance between 0 and the pantograph height measurement reference plane 32, and the value is the floor level FL.
It is none other than the height L1 of the trolley 20 from.

Next, a second embodiment of the trolley height measuring device according to the present invention will be described in detail with reference to FIG.

FIG. 3 is an enlarged view of the lower right portion of FIG. In FIG. 3 as well, the range finder 50 is fixed to the pantograph 40, but its measurement target is the distance L3 between the pantograph 40 and the point B on the upper surface of the truck rail 30, unlike FIG.

From FIG. 3, the following relationship is established.

L1 = L3 * cos θ1 + L2 (1)

Here, since L2 is the height of the rail 30, it is a known fixed value, and θ1 is a fixed value determined from the mounting position dimensions of all machines including the carriage 10.

Therefore, from the relationship of the equation (1), it is understood that the trolley height L1 can be calculated by measuring the distance L3 between the pantograph 40 and the rail 30.
That is, the height L1 of the trolley 20 from the floor level FL can be measured by the measurement value L3 by the distance meter 50 also in the second embodiment.

The second embodiment can be effectively used even in the case where there is a falling object or the like from the carrier truck on the floor surface and the flatness of the floor surface cannot be ensured.

In the second embodiment, if the horizontal positional relationship between the trolley 20 and the carriage 10 is largely deviated from the width of the rail 30 or more, it may not be accurate.
In a normal carrier, the deviation of the relative position in the horizontal direction is 10
There is no problem as it is about cm or less. Also, when using it in an installation place where it is inevitable that it will be greatly biased,
A camera (not shown) is installed at the installation position of the rangefinder 50, the vicinity of the rail 30 is photographed, the rail upper surface is recognized by image analysis, and the direction of the rangefinder 50 is changed toward the rail upper surface. A mechanism for obtaining θ1 from the amount of change in direction may be used.

A trolley height abnormality detecting method by the trolley height measuring device will be described below with reference to FIG. 4 showing a cross section taken along line IV-IV in FIGS.

Normally, the trolley 20 comprises the trolley support 2
By 2 it is supported at substantially constant intervals in the traveling direction.

If the trolley 20 is normal, it is held horizontally as shown in C and D of FIG. 4, but due to various factors such as deterioration over time, the trolley 20 is kept in a horizontal position. Abnormalities may occur, such as a droop. Such an abnormality is caused by the trolley shoe 4 of the truck 10.
2 It will cause troubles such as disconnection, so it is necessary to detect it early and correct it.

Therefore, in the present invention, the trolley height measuring device having the mechanism as shown in FIGS.
The height L1 of 0 is measured, and when the value exceeds the upper and lower limit values of the maintenance reference value, it is determined to be abnormal.

Further, as shown in detail in FIG.
In addition, by providing a carriage traveling position detector 56 via a gear 54 that rotates together with the drive device 12, and by detecting and outputting the traveling position of the carriage in which the abnormality has occurred by the carriage traveling position detector 56, The abnormal position of the trolley height can be easily known. It should be noted that the bogie traveling position detector may be provided on the side of the ground 32 instead of being mounted on the bogie 10.

In the above embodiment, the present invention is applied to the coil carrier, but the application target of the present invention is not limited to this.

[0039]

According to the present invention, the height of the trolley can be measured even when the trolley is installed in the lateral direction of the trolley, and an abnormality in the height of the trolley can be detected early to prevent troubles. It becomes possible.

[Brief description of drawings]

FIG. 1 is a front view of a trolley in which a trolley height measuring device according to a first embodiment of the present invention is arranged and a trolley as seen from a traveling direction of the trolley.

FIG. 2 is a diagram showing a pantograph used in the above embodiment and a lifting mechanism for the pantograph.

FIG. 3 is an enlarged front view showing a main part of a second embodiment of the trolley height measuring device according to the present invention.

FIG. 4 is a view for explaining the operation of the above embodiment,
Cross-sectional view taken along line IV-IV in FIG.

[Explanation of symbols] 10 ... Carrier truck 12 ... Cart drive device 14 ... Axle 16 ... Wheels 20 ... Trolley 22 ... Trolley support material 30 ... Truck running rail 40 ... Pantograph 42 ... Trolley shoe

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 5H105 AA02 BA02 BB07 CC02 CC12                       DD03 EE03 EE06 EE12 EE16                       GG05 GG18                 5H115 PA07 PC02 PG01 PI01 PU01                       TD17 TR15 TR16 TW02 UB17                       UF02

Claims (3)

[Claims] 1. A trolley height measuring device for feeding electric power to a carrier vehicle, wherein a pantograph height measuring sensor for measuring the height of the pantograph from a ground reference plane is installed in the pantograph closest to the trolley shoe on the carriage side. A trolley height measuring device for a carrier. 2. A trolley for a carrier truck according to claim 1, wherein an alarm is output when a value measured by the pantograph height measuring sensor exceeds a preset maintenance standard limit value. Height measuring device. 3. A bogie position detection sensor for detecting the traveling position of the bogie is further installed, and when the measured value by the pantograph height measuring sensor exceeds a preset maintenance standard limit value, it is regarded as abnormal, and The running position of the carriage in which an abnormality has occurred is detected by the carriage position detection sensor and output.
The trolley height measuring device for a carrier according to claim 1 or 2.