JPH07172220A - Trolley wire lubrication method - Google Patents

Abstract

PURPOSE:To obtain a lubrication method by which dust is not stuck and carried away by rain water by forming a lubrication zone on at least one side surface of a slip plate making sliding contact with a trolley wire and mutually transfering the lubrication component on their contact surfaces and forming a solid lubrication layer on the sliding contact part. CONSTITUTION:A device 1 is composed of a lubricant supply device 11, an oil supply pipe 12 and an applying part 13 having an exit and the lubricant supply device 11 is mounted on a wire 101. A lubricant is supplied to the applying part 13 from the tank of the lubricant supply device 11 by a pump through the oil supply pipe 12. This applying part 13 is fixed and held on the upper side of a trolley wire 105 by a fixing metal fitting and lubricant is carried out from the exit of the applying part 13 and supplied to the trolley wire 105. This lubricant is collected on the lower surface of the trolley wire 105 by its gravity and a volatile liquid formed the lubricant in the lapse of time is volatilized and bond for dipersing and holding a minute solid lubricant remains. This bond formes the lubrication zone and makes contact with a slip plate so as to transfer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for lubricating a trolley wire which supplies electricity by sliding contact with a pick-up plate used for supplying electric power to electric trains, electric locomotives and the like.

[0002]

2. Description of the Related Art Conventionally, as a lubrication method for a trolley wire which is slidably contacted with a pick-up plate to supply electricity, a part of the trolley is continuously or intermittently supplied with a liquid lubricating liquid and is slid on the pick-up plate. A method is known in which the lubricating liquid is moved in the length direction of the trolley wire to supply the lubricating liquid to the entire trolley wire.

[0003]

In the conventional trolley wire lubrication method in which a liquid lubricating liquid is continuously or intermittently supplied to a part of the trolley, since the lubricant is a liquid, the portion to which the lubricating liquid adheres is It is sticky. Therefore, solid particles such as dust particles adhere to the trolley wire. Since the portion to which the solid particles such as sand adhere is rubbed by the picking plate, the trolley wire and the picking plate are rubbed by the solid particles such as sand.
For this reason, when the trolley wire and the pick-up plate are in sliding contact with each other, the friction coefficient of the trolley wire and the pick-up plate is also high and much wear occurs. Further, even if dust is not attached, the lubricating liquid attached to the trolley wire can be easily washed off with rainwater. Therefore, it is difficult to keep the trolley wire always holding the lubricating liquid.

The present invention has been made in view of the above circumstances, and provides a method for lubricating a trolley wire which is unlikely to be stuck with dust and is retained by rainwater for a long period of time.

[0005]

According to the trolley wire lubrication method of the present invention, a solid state in which a fine solid lubricant is contained in a surface portion of at least one of a trolley wire and a slide plate slidably in contact with the trolley wire is in contact with each other. Lubricating band forming step of forming a lubricating band, sliding portions of the trolley wire and the trolley wire transfer solid-phase lubricating components constituting the lubricating band to each other at sliding contact surfaces, and the sliding contact of the trolley wire And a transfer step of forming a solid-state lubricating layer on the sliding contact portion of the trolley wire.

The present invention applies the phenomenon that the material of the surface portion constituting one sliding surface moves to the other sliding surface between a pair of sliding surfaces that slide with each other. The movement between the sliding surfaces is not limited to liquid, but is also found in solid such as metal. Using this movement to the mating sliding surface, the solid lubricant is moved between the sliding surfaces, and the solid lubricant is repeatedly moved from the trolley wire to the picking plate and from the picking plate to the trolley wire. The solid-state lubrication zone formed in a part of the trolley wire is moved to the entire trolley wire to form a solid-state lubricating layer on the entire trolley wire.

In the lubricating band forming step of the present invention, a solid-phase lubricating band containing a fine solid lubricant is formed on a surface portion of at least one of the trolley wire and the slide plate slidingly contacting the trolley wire, which are in sliding contact with each other. Is. As the solid lubricant, those conventionally known as solid lubricants such as molybdenum disulfide, graphite and fluororesin can be used.
Among them, molybdenum difluoride is particularly excellent in slidability,
In addition, natural molybdenum disulfide is desirable.

Here, the fine solid lubricant means a solid lubricant having a size that does not cause a large scratch on the sliding surface by sliding, and has an average particle size of about 3 μm or less. The fine solid lubricant preferably has an average particle size of 0.5 μm or less and a flat shape. In addition to the above-mentioned solid lubricant, a bonding agent for fixing the solid lubricant can be included as a component constituting the lubrication zone. The cement also serves to hold the solid lubricant on the sliding surface. Such binders include synthetic oils, mineral oils of heavy fractions, natural or polymerized rosins, rosin esters, hydrogenated oils, castor oils, castor waxes, among which synthetic oils and mineral oils of heavy fractions are superior. . Crystalline plastics such as polyethylene and nylon are also preferable. Furthermore, a linear polymer having a low molecular weight that melts at a relatively low temperature seems to be preferable as a binder. Further, the bonding agent is not limited to organic substances. A metal having a relatively low melting point can also be a preferable bonding agent.

The lubricating zone is prepared by preparing a lubricating liquid composed of a finely divided solid lubricant and a dispersible liquid that disperses or dissolves the binder, and apply this lubricating liquid to a trolley wire or a pick-up plate to disperse it. The volatile liquid evaporates to form a vapor. Since such a lubricating liquid is a liquid, it can be easily applied to the trolley wire or the pick-up plate. When a dispersant for solid lubricant and an anticorrosive are added to this lubricating liquid, the coatability is further improved and the weather resistance is also improved.

When the picking plate is porous, the lubricating liquid prepared as described above may be impregnated into its pores and further dried to form a solid phase lubricating zone for use. In this case, the porous slit plate having the lubricating band may be used alone, but it is more preferable to use it in combination with the trolley wire having the lubricating band. A conventional method can also be adopted as another means for forming the lubrication zone. If the lubricant that forms the lubrication band is a solid, it can be applied like a wax applied to skis. In this case, the lubricant can be composed of a fine solid lubricant and a bonding agent for fixing the solid lubricant. This wax-like solid lubricant is fixed directly to the sliding part of the pick-up plate, or if the pick-up plate is porous, the porous part of the pick-up plate is heated and liquefied to impregnate the solid lubricant and then cooled. It can be used as a solid phase lubrication zone.

Further, the trolley wire can be applied by directly pressing it onto the lower surface of the trolley wire, and the lubricant adheres to the lower surface of the trolley wire in layers to form a lubricating band. further,
Alternatively, a mixture of the fine powder solid lubricant and the binder may be formed into a sheet, and the sheet-shaped lubricant may be wound around a trolley wire or a slot plate to form a lubricating band. The lubrication band is held by the sliding mating material and is supplied to the entire trolley wire. Therefore, the consumption of the lubrication band is severe. To withstand this wear, new lubrication zones need to be formed.

When the lubricant is liquid, the following device can be used to form a lubricant band on the trolley wire. A device 1 shown in FIG. 1 includes a lubricant supply device 11, an oil supply pipe 12, and a coating section 13 having a discharge port. Lubricant supply device 11
Is attached to the overhead wire 101. The lubricant supply device 11 has a tank for holding the lubricant and a pump for continuously or intermittently supplying the lubricant from the tank. The oil supply pipe 12 supplies the lubricant supplied by the pump from the lubricant supply device 11 to the application unit 13. The coating unit 13 has the same pipe shape as the oil supply pipe, and has discharge ports at predetermined intervals. The coating section 13 is fixed and held above the trolley wire 105 by a fixing bracket 106. In addition, overhead wire 1
01 supports the tension wire 103 by the support wire 102, and the trolley wire 105 is hold | maintained at this tension wire 103. The overhead wire 103, the trolley wire 105, and the coating section 13
2 is an enlarged view of FIG.

The lubricant is continuously or intermittently sent from the lubricant supply device 11 of the apparatus 1 to the oil supply pipe by the pump, flows out from the discharge port of the coating section 13, and is supplied to the trolley wire 105.
Is supplied to. This lubricant is a trolley wire 105 due to gravity.
The volatile liquid that collects on the lower surface of the and that forms the lubricant with time evaporates, leaving behind a bonding agent that disperses and holds a solid fine solid lubricant. This forms the lubrication zone of the present invention. This lubrication band makes sliding contact with the sliding plate and transfers to the sliding plate. Further, the transferred lubrication band re-transfers and adheres to the portion of the trolley wire at a position distant from the portion of the trolley wire where the lubrication band is formed. In this way, the lubrication band extends in the longitudinal direction of the trolley wire.

The lubricating liquid in the lubricant supply device 11 contains
Solid lubricant is dispersed. Since the solid lubricant is fine, it hardly separates from the binder, but a stirrer may be installed in the lubricant supply device 11. Another device for forming a lubricating band using a liquid lubricant is a device 2 shown in FIGS. 3 and 4. This device is used by being fixed to a pantograph of a vehicle, and includes a lubricant supply device 21 fixedly held on a roof 111 of the vehicle, an oil supply pipe 22, and a guide member 26 and a nozzle 23 fixedly held on a pantograph 112. And an application part base 25.
The application unit base 25 is slidably held in the lateral direction (direction orthogonal to the trolley wire 105) on the guide member 26 fixed to the upper surface of the pantograph 112. A guide roller 27 having a U-shaped groove which is fixed to the coating portion base portion 25 and contacts the lower surface and both side surfaces of the trolley wire 105, and the guide roller 2
The space adjusting roller 28 is provided in front of the trolley wire 7 at a distance from the trolley wire 105 and rolls in contact with the lower surface of the trolley wire 105. The coating unit 24 has a nozzle 23 provided between the guide roller 27 and the gap adjusting roller 28 and protruding upward.

This device 2 moves along the trolley wire 105 by the movement of the vehicle, follows the trolley wire 105 by the guide roller 27, and the discharge port of the nozzle 23 is always directed to the lower surface of the trolley wire 105. In addition, the space adjusting roller 28
Thus, the distance between the lower surface of the trolley wire 105 and the discharge port of the nozzle 23 is kept constant. And the lubricant supply device 21
The lubricant is continuously supplied to the nozzle 2 via the oil supply pipe 22.
3, the lubricant is continuously applied from the nozzle 23 to the lower surface of the trolley wire 105. With this device 2, the lubricant can be applied for a long time along the trolley wire 105, and as a result, a lubricating band can be formed on the long part of the trolley wire 105.

The sliding part of the pantograph, which slides in contact with the trolley wire, is made of a porous body of any one of copper or its alloy, iron or its alloy, and carbon. The lubricant may be impregnated, the lubricant may be guided from the porous body to the surface of the sliding part of the pick-up plate and supplied to the lower surface of the trolley wire.

[0017]

According to the trolley wire lubrication method of the present invention, a solid-phase lubrication zone containing a fine solid lubricant is formed on the surface portions of at least one of the trolley wire and the slide plate slidingly contacting the trolley wire that are in sliding contact with each other. Then, a solid-state lubricating layer is formed on the entire trolley wire by utilizing the phenomenon of transition of the formed lubricating band to the mating sliding surface during sliding.

In the trolley wire lubrication method of the present invention, both the lubrication zone formed on the trolley wire and / or the slot plate and the lubrication layer formed on the entire trolley wire are solid. Therefore, neither the lubrication zone nor the lubrication layer has adhesiveness. Therefore, even if dust particles come into contact with these lubricating bands and lubricating layers, they do not adhere to the lubricating bands and lubricating layers. Therefore, foreign matter such as dust particles do not enter the sliding surface between the trolley wire and the pick-up plate, and abnormal friction and wear due to the foreign matter do not occur. Therefore, the lubricating function of the solid lubricant is exerted without being impaired, and a low coefficient of friction and a small amount of wear can be maintained. Furthermore, since both the lubrication zone and the lubrication layer are solid and adhere to the trolley wire and the pick-up plate,
It will not be washed away or blown away by rainwater or wind. Therefore, the lubricating band and the lubricating layer formed on the trolley wire and the pick-up plate are held by the trolley wire and the pick-up plate for a long time, and the lubricating function is maintained for a long time. The pickpocket is
When the sliding portion has a porous structure, the lubricant is retained in the sliding portion holes, and the lubricating function is extended for a long time.

[0019]

EXAMPLES The present invention will be described below with reference to examples. Molybdenum disulfide 0.4 with an average particle size of 0.5 μm as a solid lubricant
Sufficient parts by weight (hereinafter, "parts" refer to "parts by weight"), 4.0 parts of synthetic oil as a bonding agent, the balance of light oil as a dispersible liquid, 1.5 parts of a dispersant and 0.2 part of a rust inhibitor. To prepare a lubricant that forms a lubrication zone. In order to see the ability of this lubricant to form a lubricant band, a lubricant film was formed by coating the surface of a copper plate at a rate of 10 g / m ² . This lubricant film became a substantially solidified lubrication zone after about 60 minutes.

Using this lubricant, it is supplied to the trolley wire portion of about 26 m by the supply device shown in FIG. 1, and about 1 g per one time, about 37 times / day at 30 minute intervals, continuously for 18 hours / day. Supplied. During this period, sliding was performed 9000 times in the same direction under substantially the same sliding conditions as the pantograph of an ordinary suburban train. Then, the presence or absence of a lubrication band was examined in the trolley wire portion away from the lubricant supply portion. Approximately 1 by visual observation
A lubrication zone was confirmed at a position 5 km away. Moreover, this lubrication zone was not washed away by rain.

[Brief description of drawings]

FIG. 1 is an overall view of a coating device that supplies a lubricant to a trolley wire.

FIG. 2 is an enlarged view showing an enlarged main part of the apparatus shown in FIG.

FIG. 3 is a front view of a device that supplies a lubricant to the trolley wire from the pantograph side of the vehicle.

FIG. 4 is a side view of a device that supplies a lubricant to the trolley wire from the pantograph side of the vehicle.

[Explanation of symbols]

1, 2 ... Coating device 11, 21 ... Lubricant supply device 12, 22 ... Oil supply pipe 23 ... Nozzle
24: coating section 25: coating section base 26: guide member 27
…… Guide roller 28 …… Spacing adjustment roller 101 …… Overhead wire 1
03 …… Cable overhead line 105 …… Trolley line 111 …… Roof of vehicle 112 …… Pantograph

Claims (3)

[Claims] 1. A lubrication band forming step of forming a solid phase lubrication band containing a fine solid lubricant on at least one sliding surface portion of a trolley wire and a sliding contact plate of the trolley wire. And the trolley wire are brought into sliding contact with each other to transfer the solid-phase lubrication components constituting the lubricating band to each other at the sliding contact surface, and are moved to the sliding contact portion of the trolley wire to be solid at the sliding contact portion of the trolley wire. A trolley wire lubrication method comprising a transition step of forming a lubrication layer in a state. 2. The lubricant band forming step comprises a lubricating liquid comprising a fine solid lubricant, a bonding agent for fixing the solid lubricant, the solid lubricant and a dispersible liquid for dispersing or holding the bonding agent. The trolley wire lubrication method according to claim 1, which is a step of applying and vaporizing the vaporizable liquid to vaporize it. 3. The trolley wire lubrication method according to claim 1, wherein the pick-up plate sliding portion is formed of a porous body of any one of copper or an alloy thereof, iron or an alloy thereof, and carbon.