JP2000142185A - Frame device and trolley wire stretching device for replacement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform a more precise tension control by providing a noncontact sensor for detecting the winding diameter of a trolley wire without contact with the trolley into and a braking means for generating a braking force proportional thereto. SOLUTION: This frame device 20 is provided with an ultrasonic sensor S for measuring the winding diameter of a trolley wire and a control means, and the control means is connected to the ultrasonic sensor S and a braking means 28, respectively. When a rolling stock is traveled forward at a fixed speed, the tension of the trolley wire is regulated by a drum 27 braked by the braking means 28 and a capstan member. Although the winding diameter of the trolley wire is reduced with the lapse of time at this time, the winding diameter of the trolley wire at that point of time is detected by the ultrasonic sensor S. The winding diameter of the trolley wire detected by the sensor S is transmitted to the control means, where a soft processing is performed to instruct the braking means 28 to supply a predetermined braking force to the drum.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for extending, winding or replacing a trolley wire for supplying electric power to a train.

[0002]

2. Description of the Related Art An overhead wire structure of a trolley wire is as follows in the case of a single catenary type, for example. That is, electric poles were erected at predetermined intervals along the track, and suspension wires were stretched between beams extending from the power poles, and the suspension lengths of the catenary-formed suspension wires were made different from each other. A general overhead wire structure is such that the hangers H are attached at regular intervals in a hanging state, and the trolley wires T are sandwiched by the hangers to maintain the trolley wires T substantially in parallel with the train track. .

A trolley wire stretched by such an overhead wire structure is formed not as a stranded wire but as a single wire, and therefore has a very strong spring property, and it is very difficult to handle it. Follow me. Further, as shown in FIG. 5, grooves G are cut on both left and right sides of the trolley wire T to facilitate locking by a connection portion called an ear He at the tip of the hanger H. Therefore, when handling the trolley wire, it is necessary to pay sufficient attention to prevent twisting of the trolley wire. In addition, the trolley wire is likely to be ramped due to the strength of the spring. When the trolley wires are ramped up, the work efficiency is reduced, but in addition, the scratches (bad marks) that affect the trolley wires after contacting with each other or between the trolley wires and other members are generated on the surface of the trolley wires. There are cases. Under these circumstances, when performing operations such as extending, winding, or replacing a trolley wire, it is a very important problem how to maintain the tension acting on the trolley wire within a desired constant range. Becomes

[0004] In consideration of the above points, when performing the above-mentioned work on the trolley wire, a rotatable trolley wire winding drum and a braking force for rotating the drum are generated. A gantry provided with a braking unit is used. In other words, the tension of the trolley wire is maintained within a certain range by controlling the braking force related to the rotation of the drum when pulling out the trolley wire from the drum or winding the trolley wire around the drum by braking means using hydraulic pressure or the like as a driving force. By doing so, the above operation is performed in a stable state while preventing the trolley wire from being twisted, sloppy, and badly traced due to its spring property.

Here, in the conventional gantry, a desired tension to be applied to the trolley wire is set in advance, and a constant torque corresponding thereto is applied to the drum, whereby the tension of the trolley wire is kept within a certain range. Attempts have been made to preserve. However, the winding amount of the trolley wire on the drum changes every moment whether it is pulled out or wound, and the winding diameter of the trolley wire also changes without stopping. Therefore, only by applying a constant torque to the drum as in the conventional gantry, the tension of the trolley wire cannot be accurately maintained within a certain range.
In order to prevent the trolley wire from being twisted, rampage, and bad marks, and to realize efficient work, it is necessary to more precisely control the tension applied to the trolley wire as compared with the conventional technology. .

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a more accurate tension control when performing the work of extending, winding, or replacing a trolley wire. It is intended to provide a gantry device and its applied technology.

[0007]

A gantry according to the present invention for solving the above-mentioned problems generates a rotatable trolley wire winding drum and a braking force for the rotation of the drum. A non-contact sensor that detects the winding diameter of the trolley wire of the drum without contacting the trolley wire, based on a trolley device that includes a braking unit, and based on the winding diameter of the trolley wire detected by the non-contact sensor, And control means for instructing the braking means to generate a braking force proportional thereto. The winding radius r of the trolley wire, the tension F acting on the trolley wire, and the torque N required for drum braking generally satisfy the relationship of N = rF. Therefore, as the winding radius r of the trolley wire changes,
By changing the torque N as the braking force in proportion to this, the tension F can be kept constant without being affected by the change in the winding diameter of the trolley wire. In the gantry of the present invention, a non-contact sensor is used to detect the winding diameter of the trolley wire. As a result, the winding diameter can be measured without causing the trolley wire to twist or cause a bad mark. The type of the non-contact sensor is not particularly limited as long as it can detect the winding diameter of the trolley wire without contacting the trolley wire. For example, an ultrasonic sensor or an optical sensor can be used.

The gantry can be used alone. For example, by connecting a new trolley wire for replacement to one end of the old trolley wire that has already been stretched, and winding the old trolley wire from the other end side with a fixed mounting device,
The collection of the old trolley wire and the extension of the new trolley wire can be performed simultaneously while keeping the tension of the trolley wire constant. In addition, this gantry device can be used in combination with another device. For example, a gantry device according to the present invention and a trolley wire supplied from a drum of the gantry device are wound around a vehicle capable of traveling on a train track, and a capstan that feeds out the trolley wire by applying a desired tension is provided. And a guide means for restricting the feeding height of the trolley wire fed from the capstan, the trolley wire extending device is constituted, so that the tip of the trolley wire fed from the drum of the gantry device can be used. By running the vehicle in a state where the vehicle is stopped and fixed at the starting end of the wire extension section, a tension corresponding to the tension in the final overhead wire state is given, and the trolley wire can be easily and efficiently extended.

Further, in the above-mentioned trolley wire extension device, the capstan and the gantry are connected so that the angle between the trolley wire between the drum and the capstan and the direction perpendicular to the rotation axis of the drum is reduced. Preferably, the relative position can be displaced in the direction of the rotation axis of the drum. By doing so, it is possible to further prevent the trolley wire pulled out from the drum or wound on the drum from being twisted or damaged. In this configuration, for example, the gantry device can be moved in parallel in the rotation axis direction of the drum, the capstan can be moved in parallel in the rotation axis direction of the drum, or the drum and the capstan are moved in the rotation axis direction of the drum. And the parallel movement can be realized by controlling the trolley wire drawn from or wound on the drum so as to be as vertical as possible to the rotation axis of the drum.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of the present invention will be described. In this description, the trolley wire extension device according to the present invention will be described, and the gantry device according to the present invention will be described therein.

As shown in FIGS. 1 and 2, a trolley wire extension device according to this embodiment includes a gantry device 20 and a capstan 3 mounted on a vehicle 10 capable of traveling on a train track.
0 and guide means 40 and the like.

The lower surface of the front and rear ends of the vehicle 10 includes a track ring 11 which can mesh with and run on the train track, and the track and land apparatus 1 which can move the track ring 11 up and down freely.
2 are provided. Therefore, this wire drawing device raises and lowers the bearing ring 11 by the track and land device 12,
Normally, it is possible to travel on the road, and at work, on the train track.

The gantry device 20 includes a gantry base 21 fixed on the upper surface of the loading platform 13 of the vehicle 10, two guide rails 22 provided parallel to each other on the front and rear portions of the gantry base 21, and the guide rails 22. An auxiliary base 24 mounted on the upper surface and connected to a rod of a drive cylinder 23 mounted between the guide rails 22 and movable on the guide rail 22 by the forward and backward movement of the rod, and upward from the auxiliary base 24. A pair of extended drum support portions 25, 25;
A drum 27 for winding a trolley wire T which is rotatably supported on the drum supporting portions 25, 25 with its rotating shaft 26 rotatable.
And a braking means 28 for supplying a braking force related to rotation to the rotating shaft 26 of the drum 27. Behind the gantry device 20, a cable bearer 29 formed by bending the plate-like body by hinge connection with a pin is fixed at one end to the gantry base 21 and the other end to the auxiliary base 24. It is provided in the state where it was set. Cable bear 29,
Bundle cables (not shown), hoses for hydraulic circuits, etc.
This is for holding between the bent portions, and has the function of maintaining the bundle of cables and the like so as not to be loosened even by the movement of the auxiliary base 24. The gantry device 20 is provided with an ultrasonic sensor S for measuring the winding diameter of the trolley wire T and control means (not shown). The ultrasonic sensor S and control means, and the control means and braking means are provided. 28 are connected to each other. The ultrasonic sensor S is mounted so as to direct the rotation shaft 26 of the drum 27 in order to accurately detect the winding diameter of the trolley wire T.

The capstan 30 is a carrier 1 of the vehicle 10.
3, a capstan base 31 fixedly attached to the upper surface, a pair of left and right capstan support parts 32 extending upward from the capstan base 31, and the capstan support part 32 being rotatable. The apparatus includes a capstan member 33 that is pivotally supported, and an entry guide 34 attached to a side of the capstan member 33 facing the gantry device 20. Further, the capstan 30 is provided with a capstan braking device (not shown) so that an appropriate braking force can be supplied with respect to the rotation of the capstan member 33.

The guide means 40 comprises an extendable and retractable cylinder 41 driven by hydraulic pressure, and a guide pulley 42 attached to the tip of the cylinder 41 and having a trolley wire T guide groove on its outer periphery. ing.

The braking means 28, the capstan braking means (not shown), and the like include a hydraulic drive unit 14 attached to the lower surface of the loading platform 13 of the vehicle 10, and an oil cooler 15 provided on the upper surface of the loading platform 13 of the vehicle 10. , 15 and manifold 1
6 is driven by a hydraulic system.

Next, the operation of the trolley wire extension device when the trolley wire is extended by the trolley wire extension device will be described. When performing wire drawing using this wire drawing device,
Activate the track-and-landing device 12 to lower the bearing ring 11,
The race 11 is made to be able to run on a train track (not shown). Next, the trolley wire T is pulled out from the drum 27 of the gantry device 20, and the capstan 30 is moved through the entry guide 34.
Is wound around the capstan member 33. In this case, the trolley wire T is wound around the capstan member 33 three and a half turns, and then the trolley wire is moved toward the rear of the vehicle via the guide pulley 42 positioned at a desired height by the cylinder 41. The line T is extended, and the tip of the trolley line T is fixed at the starting point of the working section.

After completing the above-mentioned preparation steps, the vehicle 10 is driven forward at a constant speed. The tension of the trolley wire T is controlled by the drum 27 which is braked by the braking means 28 and the capstan member 3 which is braked by the capstan braking means (not shown).
Adjusted by 3. At this time, the winding diameter of the trolley wire T is
The diameter of the winding of the trolley wire T at that time is detected by the ultrasonic sensor S. Then, the winding diameter of the trolley wire T detected by the sensor S is sent to control means (not shown). Here, the control means performs software processing and sends an instruction to the braking means 28 to supply a predetermined braking force to the drum. At this time, the position where the trolley wire T is unwound on the surface of the drum 27 changes in the rotation axis direction of the drum 27.
With the change of the unwinding position of the trolley wire T on the surface of the drum 27, the auxiliary base 24
The drive force sequentially moves on the guide rail 22 in the direction of the rotating shaft 26 to reduce the angle between the trolley wire T between the drum 27 and the capstan 30 and the direction perpendicular to the rotating shaft of the drum 27. While doing so, the trolley wire T is extended over the work section.

[0019]

As described above, according to the gantry according to the present invention, regardless of the diameter of the trolley wire wound on the drum, the trolley wire can be extended and wound while maintaining a constant tension that is accurately adjusted. You will be able to perform tasks such as picking up and replacing. In addition, according to the trolley wire extension device to which the gantry device is applied, it is possible to easily maintain the tension of the trolley wire and prevent torsion during the work, thereby greatly improving the work efficiency.

[Brief description of the drawings]

FIG. 1 is a side view showing a trolley wire extension device according to an embodiment of the present invention.

FIG. 2 is a plan view showing a vehicle bed portion in the trolley wire extension device shown in FIG. 1;

FIG. 3 is a side view showing a gantry device included in the trolley wire extension device shown in FIGS. 1 and 2;

FIG. 4 is a rear view showing a gantry device included in the trolley wire extension device shown in FIGS. 1 and 2;

FIG. 5 is a sectional view showing an overhead wire structure of the trolley wire.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Vehicle 11 Track ring 12 Track-and-land apparatus 13 Loading unit 20 Mounting unit 21 Mounting base 22 Guide rail 23 Drive cylinder 24 Auxiliary base 25 Drum support 26 Rotation axis 27 Drum 28 Braking means 30 Capstan 31 Capstan base 33 Capstan Member 34 Entry guide 40 Guide means S Ultrasonic sensor T Trolley wire

Continued on the front page (72) Inventor Noboru Suzuki 3-14-2 Ueno, Taito-ku, Tokyo Inside Yasuda Manufacturing Co., Ltd. (72) Inventor Takematsu 3-14-2 Ueno, Taito-ku, Tokyo Yasuda Manufacturing Co., Ltd. (72 Inventor Shiroharu Shimizu 3-14-2 Ueno, Taito-ku, Tokyo Inside Yasuda Manufacturing Co., Ltd.

Claims (3)

[Claims] 1. A gantry comprising: a rotatable trolley wire winding drum; and a braking means for generating a braking force for the rotation of the drum. A non-contact sensor for detecting without contacting the wire, and control means for instructing the braking means to generate a braking force proportional to the winding diameter of the trolley wire detected by the non-contact sensor. Gantry device. 2. The gantry according to claim 1, wherein the non-contact sensor is an ultrasonic sensor. 3. The trolley wire according to claim 1 or 2, and a trolley wire supplied from a drum of the gantry device is wound, and a desired tension is applied to draw out the trolley wire. A capstan and a guide means for regulating a feeding height of a trolley wire fed from the capstan are mounted on a vehicle capable of traveling on a train track. A trolley wire extension device that is capable of extending a trolley wire by applying a tension corresponding to the tension in the trolley wire, wherein a relative position between the capstan and the gantry device is a trolley wire between the drum and the capstan. And a direction perpendicular to the axis of rotation of the drum, so as to reduce the angle between the axis and the axis of rotation of the drum.