JP4067668B2 - Mounting device and trolley wire redrawing device using the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a technique for extending a trolley wire that supplies power electricity to a train, and winding or replacing the trolley wire.
[0002]
[Prior art]
For example, in the case of a single catenary type, the overhead wire structure of the trolley wire is as follows. That is, a power pole is built at predetermined intervals along the track, and a suspension line is stretched between beams extending from the power pole, and the suspension length is made different from the suspension line forming the catenary. It is a general overhead wire structure in which the hanger H is attached in a suspended state at regular intervals and the trolley wire T is sandwiched between the hangers so that the trolley wire T is maintained substantially parallel to the train track. .
[0003]
By the way, the trolley wire stretched by such an overhead wire structure is formed not as a stranded wire but as a single wire, so that its spring property is very strong and its handling is very difficult. Further, as shown in FIG. 5, grooves G are cut in the left and right side surfaces of the trolley wire T so as to facilitate locking by a connecting 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 not to cause twisting. In addition, the trolley wire is prone to violence because of its springiness. If the trolley wire becomes violent, the efficiency of the work will decrease, but in addition to that, scratches (scratches) that will affect the trolley wires and the trolley wires and other members will affect the surface of the trolley wires. There is a case. Under such circumstances, when performing operations such as trolley wire drawing, winding or redrawing, it is very important to determine how the tension acting on the trolley wire can be maintained within a desired range. It becomes.
[0004]
In consideration of such points, when performing the above-described work relating to the trolley wire, a trolley wire winding drum that is rotatable, and a braking means that generates a braking force for the rotation of the drum, Is used. In other words, when pulling the trolley wire from the drum or winding the trolley wire around the drum, the braking force related to drum rotation is controlled by the braking means using hydraulic pressure as the driving force to maintain the tension of the trolley wire within a certain range. By doing so, the above operation is performed in a stable state while preventing the twisting, rampage, and bad marks of the trolley wire based on the spring property.
[0005]
Here, in the conventional gantry device, a desired tension to be applied to the trolley wire is set in advance, and a constant torque corresponding to the tension is applied to the drum, thereby attempting to keep the trolley wire tension within a certain range. Has been made. However, the amount of winding of the trolley wire in 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, since the tension of the trolley wire cannot be accurately maintained within a certain range only by applying a constant torque to the drum as in the conventional gantry device, the trolley wire is prevented from being twisted, ramped up, and bad marks are generated. In order to realize efficient work, it is necessary to control the tension applied to the trolley wire more accurately than in the prior art.
[0006]
[Problems to be solved by the invention]
The present invention has been made in the background as described above, and provides a gantry device capable of performing more accurate tension control when performing trolley wire drawing, winding or re-working, and its application technology. It is something to be done.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, a gantry device according to the present invention is basically a gantry device including a drum for winding a trolley wire and a braking means for generating a braking force for the rotation of the drum. A non-contact sensor for detecting the winding diameter of the trolley wire in the drum without contacting the trolley wire, and generating a braking force proportional to the non-contact sensor based on the winding diameter of the trolley wire detected by the non-contact sensor. Control means for instructing the braking means. 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 N = rF. Accordingly, by changing the torque N as the braking force in proportion to the change in the winding radius r of the trolley wire, the tension F can be reduced without being influenced by the change in the winding diameter of the trolley wire. It can be kept constant. In the gantry device 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 twisting or causing bad marks on the trolley wire. 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.
[0008]
This gantry device can be used alone. For example, by connecting a new trolley wire for replacement to one end of an old trolley wire that has already been stretched and winding the old trolley wire from the other end side with a fixed gantry device, the tension of the trolley wire is kept constant. However, it is possible to simultaneously collect the old trolley line and extend the new trolley line. The gantry device can also be used in combination with other devices. For example, a vehicle capable of traveling on a train track is wound with a gantry device according to the present invention and a trolley wire supplied from a drum of the gantry device, and a capstan that feeds out the trolley wire by applying a desired tension. And a guide means for restricting the feeding height of the trolley wire fed out from the capstan, the trolley wire extending device is configured to mount the tip of the trolley wire fed out from the drum of the gantry device. By running the vehicle in a state where it is fastened and fixed at the start end of the wire drawing section, a tension corresponding to the tension in the final overhead wire state is applied, and the trolley wire can be easily and efficiently drawn.
[0009]
Further, in the trolley wire extending device, the relative position between the capstan and the gantry device is set so that the angle formed between the trolley wire between the drum and the capstan and the surface perpendicular to the rotation axis of the drum is reduced. It is preferable to be able to displace in the direction of the rotation axis of the drum. By doing so, it becomes possible to further prevent twisting and scratching of the trolley wire drawn out from the drum or wound around the drum. In this configuration, for example, the gantry device can be translated in the rotation axis direction of the drum, the capstan can be translated in the rotation axis direction of the drum, or the drum and the capstan can be moved in the rotation axis direction of the drum. The parallel movement can be realized by controlling the trolley wire drawn out from the drum or wound around the drum so as to be as vertical as possible to the rotation axis of the drum.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a preferred embodiment of the present invention will be described. In this description, the trolley wire drawing device according to the present invention will be described, and the gantry device according to the present invention will be described therein.
[0011]
As shown in FIGS. 1 and 2, the trolley wire extending device according to this embodiment includes a gantry device 20, a capstan 30, guide means 40, and the like on a vehicle 10 that can travel on a train track. It has been placed.
[0012]
On the lower surfaces of the front and rear ends of the vehicle 10, there are provided track wheels 11 that can engage with and run on a train track, and the track wheels 11 can be raised and lowered. Therefore, this wire drawing device can travel on the road during normal operation and on the train track during work by raising and lowering the track ring 11 with the track device 12.
[0013]
The gantry device 20 is mounted on 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 in the front and rear portions of the gantry base 21, and the guide rail 22. An auxiliary base 24 connected to the rod of the drive cylinder 23 mounted between the guide rails 22 and movable on the guide rail 22 by the longitudinal movement of the rod, and extends upward from the auxiliary base 24. A pair of drum support portions 25, 25, a drum 27 for winding the trolley wire T supported by the drum support portions 25, 25 so that the rotation shaft 26 is rotatable, and the rotation shaft 26 of the drum 27. And a braking means 28 for supplying a braking force relating to rotation. Further, behind the gantry device 20, a cable bear 29 formed so as to be bent by hinge-connecting a plate-like body with a pin is fixed to the gantry base 21 at one end and to the auxiliary base 24 at the other end. It is provided in the state. The cable bear 29 is for bundling a cable (not shown), a hose for a hydraulic circuit, etc., and holding it between the bent portions. The movement of the auxiliary base 24 causes the bundle of cables and the like to be separated. It serves to maintain these so that they do not. Further, the gantry device 20 is provided with an ultrasonic sensor S and a control means (not shown) for measuring the winding diameter of the trolley wire T. The ultrasonic sensor S and the control means, and the control means and the braking means. 28 are connected to each other. The ultrasonic sensor S is attached so as to be directed to the rotating shaft 26 of the drum 27 in order to accurately detect the winding diameter of the trolley wire T.
[0014]
The capstan 30 includes a capstan base 31 fixedly attached to the upper surface of the loading platform 13 of the vehicle 10, a pair of left and right capstan support portions 32 extending upward from the capstan base 31, A capstan member 33 that is pivotally supported by the capstan support portion 32 and an entry guide 34 attached to the side of the capstan member 33 facing the gantry device 20 are provided. 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.
[0015]
The guide means 40 is composed of a cylinder 41 which is driven by hydraulic pressure and is extendable and a guide pulley 42 which is attached to the tip of the cylinder 41 and has a groove for guiding the trolley wire T on its outer peripheral portion.
[0016]
The braking means 28, the capstan braking means (not shown), and the like include a hydraulic drive device 14 attached to the lower surface of the loading platform 13 of the vehicle 10, oil coolers 15 and 15 provided on the upper surface of the loading platform 13 of the vehicle 10, and It is driven by a hydraulic system including a manifold 16.
[0017]
Next, the operation of the wire drawing device when the trolley wire is drawn by the trolley wire drawing device will be described. When performing wire drawing using this wire drawing device, the track device 11 is operated to lower the track ring 11 so that the track ring 11 can travel on a train track (not shown). Next, the trolley wire T is pulled out from the drum 27 of the gantry device 20 and wound around the capstan member 33 of the capstan 30 through the entry guide 34. In this case, the trolley wire T is wound around the capstan member 33 by three and a half turns, and then the trolley is moved toward the rear of the vehicle through 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 to the starting point of the work section.
[0018]
When the above preparation stage is completed, the vehicle 10 is driven forward at a constant speed. The tension of the trolley wire T is adjusted by a drum 27 braked by the braking means 28 and a capstan member 33 braked by a capstan braking means (not shown). At this time, the winding diameter of the trolley wire T decreases with time, but the winding diameter 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 a 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 direction of the rotation axis of the drum 27. As the trolley wire T unwinding position on the surface of the drum 27 changes, the auxiliary base 24 sequentially moves on the guide rail 22 in the direction of the rotation shaft 26 by the driving force of the driving cylinder 23, and the drum 27, capstan 30. The angle formed between the trolley line T between the surface and the surface perpendicular to the rotation axis of the drum 27 is reduced. In this way, the trolley line T is extended over the work section.
[0019]
【The invention's effect】
As described above, according to the gantry device of the present invention, the trolley wire can be extended, wound, re-stretched, etc. while maintaining a constant tension that is accurately adjusted regardless of the size of the trolley wire winding diameter in the drum. You will be able to work. Further, according to the trolley wire drawing device to which this gantry device is applied, it becomes possible to easily maintain the tension of the trolley wire and prevent twisting during the work, and the work efficiency can be greatly improved.
[Brief description of the drawings]
FIG. 1 is a side view showing a trolley wire drawing apparatus according to an embodiment of the present invention.
FIG. 2 is a plan view showing a vehicle bed 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 drawing device shown in FIGS. 1 and 2;
4 is a rear view showing a gantry device included in the trolley wire drawing device shown in FIGS. 1 and 2. FIG.
FIG. 5 is a cross-sectional view showing an overhead wire structure of a trolley wire.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Vehicle 11 Track ring 12 Track-and-rail device 13 Loading platform 20 Mounting platform 21 Mounting base 22 Guide rail 23 Drive cylinder 24 Auxiliary base 25 Drum support 26 Rotating shaft 27 Drum 28 Braking means 30 Capstan 31 Capstan base 33 Capstan Member 34 Entrance guide 40 Guide means S Ultrasonic sensor T Trolley wire

Claims (3)

In a gantry device comprising a drum for winding a trolley wire that is rotatable, and a braking means that generates a braking force for the rotation of the drum,
A non-contact sensor that detects the trolley wire winding diameter in the drum without contacting the trolley wire, and instructs the braking means to generate a braking force proportional to the trolley wire winding diameter detected by the non-contact sensor. A gantry device comprising control means for performing   The gantry device according to claim 1, wherein the non-contact sensor is an ultrasonic sensor. A gantry device according to any one of claims 1 and 2, a capstan for winding a trolley wire supplied from a drum of the gantry device, applying a desired tension, and feeding out the trolley wire, The guide means that regulates the feeding height of the trolley wire that is fed out from the capstan is placed on a vehicle that can travel on the train track, and the tension in the final overhead line state can be handled while the vehicle is running. A trolley wire drawing device capable of drawing a trolley wire by applying tension,
The relative position between the capstan and the gantry device should be displaced in the direction of the drum rotation axis by reducing the angle formed by the trolley line between the drum and the capstan and the plane perpendicular to the drum rotation axis. The trolley wire drawing device.

Images