JPS6051532B2 - Slider hardening device for third rail current collector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides, for example, a third
This invention relates to a slider hardening device for a rail current collector.

Generally, the slider sliding surface of a third rail current collector installed in a subway vehicle is a third rail current collector installed parallel to the rail.
Because the slider slides on the rail while constantly collecting current under pressure, unless the slider sliding surface is made of super hard material, it will wear out and have to be replaced, so the slider on the third rail is made of cast steel. Moreover, a ``chilling metal'' is placed near the sliding surface of this cast steel slider to ``chill'' it.

However, even if the slider sliding surface of the third rail current collector mentioned above is ``chilled'', the thickness of the chilled layer cannot be increased very much, no matter how devised it is. After the chilled layer is worn out, it will slide on the third rail on a relatively soft metal surface, and the chilling effect will also disappear.

In such cases, after the ``chilled layer'' has worn out, the slider is removed from the vehicle and surface hardened again to extend the life of the slider.
This will be reinstalled on the vehicle.

However, the conventional method of hardening the slider of the third rail current collector described above only requires time and labor for work such as disassembling the slider to remove it from the vehicle, creating a chilled layer and finishing, and reassembling and adjusting. However, the generation of a chilled layer by re-surface hardening has disadvantages such as a shorter life compared to the first generation despite the effort required.

In order to eliminate the above-mentioned drawbacks, the present invention irradiates the slider sliding surface of a current collector that is still installed in a vehicle to harden it by irradiating it with a laser beam, thereby preventing wear of the slider sliding surface. To provide a slider hardening device for a third rail current collector, which aims to extend the life of the slider and also to quickly perform hardening work with the slider attached to a vehicle.

Hereinafter, an illustrated embodiment in which the present invention is applied to a subway third rail slider will be described.

In FIGS. 1 to 4, reference numeral 1 denotes a bit line installed horizontally on each bit support 2 and holding member 3 in a vehicle factory, and an auxiliary rail 4 is installed near this bit line 1. A mirror carriage 5 is mounted on this auxiliary rail 4 so as to be able to reciprocate by means of a cylinder device 6, and a laser beam from a laser generator 24, which will be described later, is transmitted onto the mirror carriage 5 by 90 degrees. A first mirror 7 that reflects and bends is obliquely installed. Further, a pair of bogie rails 8 and 9 are attached to the bits located on both sides of the bit track 1.
are provided in parallel to the bit line 1, and movable carts 10, 11 are provided on the respective cart rails 8, 9 so as to be able to travel thereon. Furthermore, both moving trolleys 1
Slider position detectors 12 and 13, such as gap sensors and proximity switches, are installed on the vehicle 14.
The position of the slider 15 of the current collector that is still attached to the current collector can be detected. A condensing lens body 19 composed of two mirrors (reflecting mirrors) 16, a condensing lens 17, and an objective lens 18 is pivotally supported on a support shaft 20. Also, this support shaft 20
is loosely mounted by a pair of bearings 21, and one end 20a of this support shaft 20 is connected to a cylinder device 23 via a connecting rod 22. On the other hand, a laser generator 24 of a laser beam such as a CO2 gas laser is installed on the optical path of the first mirror 7, and the laser beam of this laser generator 24 is transmitted to the first mirror 7 and the second mirror. 16, condenser lens 17 and objective lens 18! A focal point of about 10WLφ is formed on the sliding surface 15a of the slider 15 through the condensing lens assembly 19.

Therefore, the laser beam irradiated onto the sliding surface 15a of the slider 15 heats the base metal portion of the sliding surface 15a, and on the other hand, due to the specific heat relationship of the base metal portion adjacent to this, the base metal portion is rapidly cooled. Therefore, the base metal portion that is irradiated with the laser beam is hardened to a predetermined degree without using any new cooling means. On the other hand, a fixed mirror 26 is provided on the straight optical path 25 of the first mirror 7 so as to pass through the bit line 1, and the reflected light of this fixed mirror 26 (
The laser beam) is transmitted to the second mirror 1 of the condensing lens body 19.
6. The light is condensed onto the sliding surface 15a of the slider 15 via the condensing lens 17 and the objective lens 18.
Therefore, the vehicle 14 having the worn sliding surface 15a of the slider 15 of the third rail current collector is now transferred to the bit track 1 of the vehicle factory and parked there. Next, as shown in FIG. 1, the mirror carriage 5 of the first mirror 7 is transferred onto the laser beam path of the laser generator 24 by the cylinder device 6, positioned, and kept stationary. On the other hand, the mobile trolley 10
The upper slider position detector 12 detects the distance between the slider 15 (attached to the vehicle 14) and the sliding surface 15a, and transmits this distance to the condensing lens body 19 for autofocusing. while focusing. When the focusing of the condensing lens body 19 is completed, the laser generator 24 is activated, and the laser beam from the laser generator 24 is transmitted to the first mirror 7 and the second mirror 1.
6. At the same time, the sliding surface 15a of the slider 15 is irradiated through the condensing lens 17 and the objective lens 18 to heat and harden it, and at the same time, the movable trolley 10 is moved slowly on the trolley rail 8, and as shown in FIG. As the cylinder device 23 moves in the opposite direction, the cylinder device 23 reciprocates.
The condensing lens body 19, which is integral with the support shaft 20 connected to the main body 3 through a connecting rod 22, swings slowly.

Therefore, the sliding surface J5a of the slider 15 is the third
As shown in the figure, hardening is performed while the focus takes a zigzag optical path A. When the hardening work of the sliding surface 15a of the slider 15 located on one side is completed in this way, the mirror carriage 5 is temporarily withdrawn from the laser beam path by the cylinder device 6.

Then, the laser beam from the laser generator 24 passes through the fixed mirror 26, the second mirror 16, the condensing lens 17, and the objective lens 18, and irradiates the sliding surface 15a of the slider 15 on the other side, creating a zigzag optical path. Hardening is performed while obtaining A. In this way, the sliding surface 15a of the slider 15 can be hardened again while still attached to the vehicle 14. Incidentally, although the above-mentioned embodiment has been explained so that hardening is performed in a zigzag optical path A, within the scope of the present invention,
For example, it is free to change the design so that parallel lines are used to perform uniform hardening.

As described above, according to the present invention, the vehicle 14 is equipped with the current collector slider 15 that is still installed in the bit line 1.
The movable carts 10 and 11 which run parallel to the bit track 1 are provided, and the laser beam condensing lens body 19 and the slider position detectors 12 and 13 are mounted on the movable carts 10 and 11. A mirror 7 is provided on the condenser lens body 19 so as to detect the position of the slider 15.
A laser generator 24 that emits light through the mirrors 16 and 16 is provided, and the laser beam of this laser generator 24 is applied to the mirror,
Since the slider 15 is irradiated and hardened through the condensing lens body 19, hardening can be added to the slider as it is, and there is no need to spend time on assembly or adjustment. It has excellent effects such as being able to be performed quickly and functionally, and being simple in structure and handling.

[Brief Description of the Drawings] Fig. 1 is a perspective view of a slider hardening device for a third rail current collector according to the present invention, Fig. 2 is an enlarged front view showing the main parts of the present invention, and Fig. 3 is Fig. 2 Bottom view along the middle chain line A-A, No. 4
The figure is a perspective view of a laser beam condensing lens body incorporated in the present invention. 1...Z track, 4...Auxiliary rail,
5... Mirror truck, 6... Cylinder device, 7
...First mirror, 8,9...Bolly rail, 10,11...Moving cart, 12,13...
Slider position detection device, 14... Vehicle, 15
...Slider, 16 ... Second mirror, 17 ... Condensing lens, 18 ... Objective lens, 19 ... Condensing lens Mirror body, 20...
...Spindle, 23...Ulinder device, 24...
- Loser generator, 26...Fixed mirror.

Claims (1)

[Claims] 1. A vehicle equipped with a collector slider that is still installed on a pit track is transferred and installed, a movable trolley that runs parallel to the pit track is provided, and a laser beam is emitted onto this movable trolley. A condensing lens body and a slider position detector are provided to detect the position of the slider, a laser generator is provided to irradiate the condensing lens body through a mirror, and a laser beam from the laser generator is provided. A slider hardening device for a third track current collector, characterized in that the slider is hardened by being irradiated through the mirror collector lens body. 2. The third rail current collector according to claim 1, characterized in that the slider sliding surface is hardened in a zigzag manner by swinging the condensing lens body provided on the movable cart. slider hardening equipment.