CA1200211A - Lubricant supply apparatus - Google Patents
Lubricant supply apparatusInfo
- Publication number
- CA1200211A CA1200211A CA000404399A CA404399A CA1200211A CA 1200211 A CA1200211 A CA 1200211A CA 000404399 A CA000404399 A CA 000404399A CA 404399 A CA404399 A CA 404399A CA 1200211 A CA1200211 A CA 1200211A
- Authority
- CA
- Canada
- Prior art keywords
- piston
- lubricant
- plunger
- pump chamber
- nozzle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K3/00—Wetting or lubricating rails or wheel flanges
- B61K3/02—Apparatus therefor combined with vehicles
Abstract
ABSTRACT OF THE DISCLOSURE
A lubricant supply apparatus is mounted on a rolling stock car travelling on rails to supply a lubricant to wheel edges and/or rail edges. The apparatus has a pressurized oil pipeline system, a pump mechanism, a pump drive mechanism, a connecting member, and a nozzle. Air pipes are not used in the pipeline system of this appara-tus. The pump drive mechanism has a coil through which a DC current flows. The amount of lubricant to be delivered is controlled by the connecting member. The nozzle has a valve mechanism to maintain the pipeline at a predetermined pressure. Therefore, the lubricant is injected in a rod shape and at a high speed toward the wheel edges on the rail edges.
A lubricant supply apparatus is mounted on a rolling stock car travelling on rails to supply a lubricant to wheel edges and/or rail edges. The apparatus has a pressurized oil pipeline system, a pump mechanism, a pump drive mechanism, a connecting member, and a nozzle. Air pipes are not used in the pipeline system of this appara-tus. The pump drive mechanism has a coil through which a DC current flows. The amount of lubricant to be delivered is controlled by the connecting member. The nozzle has a valve mechanism to maintain the pipeline at a predetermined pressure. Therefore, the lubricant is injected in a rod shape and at a high speed toward the wheel edges on the rail edges.
Description
The present inven-tion relates -to a lubricant supply apparatus for supplyinq a lubricant to edges of wheels or rails and, more particularly, to a lubricant supply apparatus for supplying the lubricant to the edges of wheels or rails without bringing a nozzle for injecting the lubricant into contact therewith.
The following conventional apparatus is known as the lubricant supply appara-tus of this type. A
lubricant is injected using an air reservoir for a wheel brake. Air pressurized by a compressor is cons-tantly maintained at a prede~ermined pressure an held in the air reservoir. The pressurized air is then supplied to an oil transfer pump through an air pipeline via an elec-tromagnetic valve. The electromagnetic valve is controlled to be on/off by a control circuit. A
lubricant is also supplied to the oil transfer pump from an oil tank through an oil supply pipeline. Upon operation of the electromagnetic valve, the oil transfer pump is drivell. The lubricant is then supplied to a
The following conventional apparatus is known as the lubricant supply appara-tus of this type. A
lubricant is injected using an air reservoir for a wheel brake. Air pressurized by a compressor is cons-tantly maintained at a prede~ermined pressure an held in the air reservoir. The pressurized air is then supplied to an oil transfer pump through an air pipeline via an elec-tromagnetic valve. The electromagnetic valve is controlled to be on/off by a control circuit. A
lubricant is also supplied to the oil transfer pump from an oil tank through an oil supply pipeline. Upon operation of the electromagnetic valve, the oil transfer pump is drivell. The lubricant is then supplied to a
2~ noz71e through an oil transfer pipeline. The air pipeline is branched to supply the pressurized air to the nozzle. As soon as the electromagnetic valve is opened, -the pressurized air is supplied to the nozzle.
Therefore, the lubricant is mixed with the pressurized air and sprayed from the nozzle to the edges of the wheels.
However, the conventional lubrican-t supply apparatus has the following drawbacks:
a) Since the air pipeline must be provided besides the oil transfer pipeline, mounting operation becomes complex and maintenance becomes cumbersome.
b) Since a great amount of air is used, the rate of operation of a compressor is high, resulting in waste o~ energy.
c) Since the air reservoir for the wheel brake is used as the drive source cf the oil transfer pump, trouble in the air pipeline adversely affects the operation of the brake mechanism.
,d) Moisture contained in the pressurized air in the air pipeline is frozen in cold areas, so that the electromagnetic valve or the oil transfer pump may not be lubricated properly.
e) Since the lubricant is mixed with the air and sprayed from the nozzle and the spray is subject to an air pressure acting against the travelling direction of a rollins stock car, part of the lubricant floats in the air in the form resembling mist, resulting in waste of the lubricant.
It is, ~herefore, a!l object of .he p-esent invention to provide a lubricant supply apparatus which is easily mounted to a rolling stock car, which requires easy maintenance, which has safety, and which ! ~
results in saving of energy.
A lubricant supply appara-tus according to the present invention has a purnping means, a supplying means, a transferring means, a pump driving means, and a connecting means. The pump driving means has a cylinder housing with an elongate hole. A piston is slidably disposed in the elongate hole. A pump chamber is defined by the cylinder housing and one side of the piston. A spring means is disposed in -the cylinder housing to urge the piston in one direction so as to increase the volume of the pump chamber. The pump chamber has a rirst check valve to allow flow of the lubricant therethrough. The supplyin~ means Eor supplying the lubricant to the pump chamber communicates therewith. Further, the pump chamber has the transferring means for transferring the lubricant.
The transferring means has a delivery means and a nozzle means. The delivery means delivers -the lubricant from the pump chamber through the first check valve. The nozzle means is disposed in the delivery means and has a second check valve to maintain the oil pressure in the delivery means. The pump driving means has a plunger and a coil means. The plunger is free to move reciprocally in the elonga-te hole with predetermined strokes. A DC current flows through the coil means to cause the plunger to move toward the piston. Tne connecting means is connected to the plunger to control the strokes of the piston.
Upon movement of the plunger toward the piston, the piston is moved with the strokes against the urging force of the spring means. A prede-termined amount of lubricant is delivered through the first check valve.
In accordance with the above structure, the pre-sent invention can provide a lubricant supply apparatus, which is easily mounted to a rolling stock car, whose main-tenance is easily performedr which has safety, and which results in saving of energy.
This invention can be more fully understood from the following detailed description when taken in conjunc-tion with the accompanying drawings, in which:
Figure 1 is a schematic side view of a rolling stock car having a lubricant supply apparatus according to the present invention;
Figure 2A is a partially sectional view of an oil transfer pipeline which is to connect to the main body of the lubricant apparatus according to a first or a second embodiment of the present invention;
Figure 2B is a partially sectional side view of a main body of a lubricant supply apparatus according to a first embodiment of the present invention;
Figure 3 is a side view of the lubricant supply apparatus when viewed from the direction indicated by arrow III in Figure 2B;
Figure 4 is a sectional view o a main body of a lubricant supply apparatus according to a second embodiment of the present invention;
Figure 5 is a side view of a lubricant supply apparatus according to a third embodiment of the present i.nvention; and Figure 6 is a sectional side view taken along the line IV - IV in Figure 5.
A lubricant supply apparatus according to the first embodiment of the present invention will be described with reference to Figures 1 to 3.
Referring to Figure 1, a rolling stock car 10 standing on rails 12 comprises a body 20 and an underframe 13 therebelow. The underframe 18 is rotatably connected to the body 20 through center plates 22. The underframe 18 has wheels 14 which contact with the rails 12. Lubricant supply apparatuses 16 according to the present invention are disposed on the upper part of the underframe 18.
The lubricant supply apparatus 16 comprises a pump mechanism 25 and a pump drive mechanism 50 as shown in Figures 2B and 3. The pump mechanism 25 comprises a main body 24, a cylinder wall cylinder 26, a pump chamber elongate hole 28, a piston 30, a spring 32 and a check valve 34. A cylinder support member 36 is screwed in one side sf the main body 24. A cylinder wall 26 is inserted into and supported by the cylinder support member 36 through ~'~q ~
a sealing material 37. One end of the piston 30 is slidably inserted along the cylinder wall 26. The pump chamber 28 is defined by the cylinder wall 26 and one end of the piston 30. The spring 32 is mounted at the other end of the piston 30. One end o~ the spring 32 is fixed on the outer surface of the cylinder wall 26 and the other end thereof is fixed at a large diameter portion 30a formed on the piston 30. The spring 32 constantly urges the piston~30 in the direction to increase the volume of the pump chamber 28. If the outer force does not act on the piston 30, the large diameter portion 30a abuts against a stopper stepped portion 36a. A vent hole 39 is formed in the vicinity of the stopper stepped portion 36a of the c~-linder support member 36. A check valve support member 38 is screwed in the main body 24 and faces the cylinder support member 36. A check valve 34 is disposed at the top of the check valve support member 38. The check valve 34 communicates with the pump chamber 28 and allows to only flow the lubricant from the pump chamber 280 The check valve 34 comprises a valve seat 42, a valve body 46 and a spring 48. A valve hole 40 which cornmunicates with the pump chamber 28 is formed in the valve seat 42. The valve body 46 has a sealing material 44 seated on the valve seat 42. The spring 48 urges the valve body 46 against the valve seat 42.
A pump drive mechanism 50 is disposed adjacent to the main body 24. The pump drive mechanism 50 is detachably mounted to one side surface of the main body 24 by bolts 52 and tongued washers 54. The tongues of the washers 54 are hooked at edges to prevent loosening of the bolts 52.
The pump drive mechanism 50 is deEined by a casing 56. The casing 56 has a detachable rear cover 51.
A coil 58 received in a case 59 îs wound along the inner wall of the casing 56. Both ends of the coil 58 are guided to a path 112 for electric connections. A DC current flows through the coil 58 via the path 112. A plunger 60 surrounded by the coil 58 is disposed on the axis of the piston 30. A stationary core stopper 62 is adjacent to the plunger 60 in the direction of movement of the plunger 60.
When the coil 58 is not excited, a predetermined stroke ~
is kept between the plunger 60 and the stationary core 62.
A cushion 64 is disposed between the rear cover 51 and the rear portion of the plunger 60.
A connecting member 66 for controlling the stro-kes of the piston 30 is disposed between the pump mechanism 25 and the pump drive mechanism 50. The connecting member 66 is a rod-shaped member having a predetermined length.
The stroke of the piston is determined by this length, Both ends of the connecting member 66 abut against the plunger 60 and the piston 30 and the connecting member 66 is supported thereby. If the ; A . ~.
connectlng ~nember 66 is replaced with another connecting member having a different length, the stroke of the piston is determined thereby and the amount of lubricant to be delivered is controlled. A sleeve 68 is disposed in the hole of the cylinder support member 36 to slidably guide the connecting member 66.
A replenishment path 70 for replenishing the lubricant is communicated with the pump chambex 28. I'he replenishment path 70 compx1.ses a ring-shaped cav--ty 72, a suction hole 74, an oil path 76 and an oil suppl~
hose 80. The cavity 72 is formed to surround the outer circumferense of the cylinder wall 26 which defines the pump chamber 28~ The suction hole 74 is formed to communicate with the pump chamber 28 formed at the head of the cylinder wall 26 and with the cavity 72. One end of the oil path 76 is opened to the cavi-ty 72 and the other end thereof is opened to the side surface of the main body 24. The oil supply hose 80 is connected to the other end of the oil path 76 through a ~oint 78.
The oil supply hose 80 communicates with a oil tank (not shown) to introduce the lubricant into the pump chamber 28.
~ n oil transfer pipeline 82 for delivering the lubri.cant communicates with the pump chamber 28. The oil transfer pipeline 82 comprises an oil transfer pipe 86 and a flexible hose 90. The oil transfer pipe 86 is connected through the check valve support member 38 and q ~
9 ~
a joint 84. The flexible hose 90 is connected to the top of the oil transfer pipe 86 through a relay joint 88.
A spray nozzle 92 is connected to the top of the oil transfer pipeline 82 through a joint 94. The spray nozzles 92 are disposed apart from the edges of the wheels (flanged surfaces l~a of the wheels 14) or the edges of the rails (inner side surfaces of the rails 12 which oppose each other) respectively. The spray nozzle 92 is fixed on the underframe 18 by a 10 nozzle support member 93. The spray nozzle 92 comprises a valve seat 98, a hood 100, a nozzle main body 104, a valve body 108 and a spring 110. The valve seat 98 is screwed at the top of the nozzle support member 93. A valve hole 96 is formed in the valve seat 15 98. The hood 100 surrounds the nozzle main body 104 screwed ln the valve seat 98 and protects the nozzle main body 10~. A nozzle hole 102 is formed inside the nozzle main body 104. The valve body 108 is sealed by a sealing material 106. The valve body 108 is tightly 20 urged against the valve seat 98 by the spring 110.
The mode of operation o the lubricant supply apparatus 16 will be described. When a DC current is applied across the coil 58 by a control circuit ~not shown) via the path 112, the plunger 60 is abruptly 25 moved toward the stationary core 62. The movement is transmitted to the piston 30 through the connecting member 66. The piston 30 is then abruptly moved to coMpress the spring 32 so tha-t the volume of the pump chamber 28 is reduced. Simultaneously, the path between -the pump chamber 28 and the suction hole 74 is blocked by the top of the piston 30. When the pressure in the pump chamber 28 is raised and reaches a pre-determined pressure, the check valve 34 is opened, and then the lubricant is forcibly supplied to the oil transfer pipeline 82. The lubricant is sealed in the oil transfer pipeline 82 at a predetermined pressure.
There~ore, when the lubricant is forcibly supplied to the oil transfer pipeline 82 from the pump mechanism 25, tke pressure is iml-nediately transmitted to open the valve hole 96. The lubricant is thus sprayed from the nozzle hole of the spray nozzle 92 in a rod-shape and at a high speed. The predetermined amount of oil is supplied along the flanyed surface 14a against the air pressure callsed by travelling the rolling stock car.
When the coil 58 is deenergized, the piston 30 restores its original position by the urging force of the spring 32~ Simultaneously, the lubricant is drawn from the pump chamber 28 from the replenishment path 70 to the pump chamber 28 and the plunger 60 is re-turned through the connecting member 66. Thus, the predetermined amount of lubricant is stored for the next replenishing operation.
I'he following effects are obtained according to the lubricant supply apparatus of the first embodimert.
The air pipeline is not used and only the oil pipeline is used. Therefore, the structure of the apparatus is simplified, and the apparatus is easily mounted to the rolling stock car, also allowing simple maintenance.
As a compressor is not used, energy is efficiently saved.
The lubricant supply apparatus according to one embodiment of the present invention is arranged independently of the bxake system. Even if the lubricant supply apparatus is broken, the brake system is not influenced by such trouble.
As described above, the air pipeline is not used.
Therefore, the conventional problem that the moisture contained in the compressed air in the air pipeline is frozen in cold areas may not occur, thus preventing the inefficiency of the lubricating operation.
Since the lubricant is sprayed from the nozzle in a rod shape, part of the lubricant may not be blown away in a form resembling mist.
Since the apparatus has a valve in the nozzle, the lubricant may not leak frorn the nozzle. The transfer pipeline is constantly under pressure, so that the small amount and the pressure of lubricant supplied by the pump chamber are accurately transmitted. Therefore, the small amount of lubricant can be inje~ted quantitatively.
The DC current is appli d to the coil of the apparatus. Even if a gap between the stationary core and the plunger is formed over a long period of time, the coil may not be burnt due to a surge voltage which may be applied upon supply of an AC current. Therefore, the blown particles of the lubricant may not be burnt.
Further, the amount oE lubricant to be supplied can be controlled.
A lubricant supply apparatus 17 according to the second embodiment of the present invention will be described with reference to Figures 1 and 4. The same reference numerals as in the first embodiment denote the same parts in the second embodiment, and a detailed description thereof will be omitted.
Male threads are formed on one side of the con-necting member screw member 67 and engaged with female threads extending through the plunger 60 along its longitu-dinal axis direction. A fixing nut 118 is screwed around the rear portion of the plunger 60 to fix the plunger 60 and the connecting member 67. The shaft portion 30b coaxially extends from the large diameter portion 30a of the piston 30. An end of the shaft portion 30b abuts against the other end of the connecting member 67.
In order to adjust the amount of lubricant to be delivered, the rear cover 51 and the cushion 64 must be removed from the casing 56. The fixing nut 118 must then be loosened. The connecting member 67 is then rotated relative to the plunger 60 to adjust the stroke of the piston 30.
The same effects as in the first embodiment are obtained in the second embodiments.
Further, according to the lubricant supply apparatus of the second embodiment, the positional relation between the connecting member and the plunger is changed to ad~ust the amount of lubricant to be delivered.
A lubricant supply apparatus according to the third embodiment of the present invention will be described with reference to Figures 1, 5 and 6.
A lubricant supply apparatus 208 comprises a pump mechanism 209, a pump drive mechanism 211 and a check valve support member 224.
The pump mechanism 209 comprises a cylinder sup-port member cylinder housing 210, four pistons 212, four springs 214 and a pressure plate surface 216. Four cylinder holes 218 are formed in the cylinder support member 210 in a circular shape at equal angular intervals.
Four through holes 251 are alternately formed parallel to the cylinder holes 218. A connecting member 253 for replacement is inserted in the through hole 251.
- One end of the piston 212 is slidably inserted in each cylinder hole 218. A pump chamber 220 is deined by one 25 end of a piston 212 and the cylinder hole 218. The spring 214 is wound around the other end s~
of the piston 212 ex-tending from the cylinder hole 218.
One end of the spring 214 is fixed at the cylinder support member 210, while the other end thereof is fixed at the large diameter portion 212a of the piston 212. The spring 214 constantly urges the piston 212 to increase the volume of the pump chamber 220. The pressure plate 216 is disposed at the other end o-f -the piston 212. The other end of the piston 212 constantly abuts against the surface ^~ the pressure plate 216 hy the urging force of the spring 214. The pressure plate 216 is a disc-shaped member and is in uniform con-tact with the piston.
The check valve suppor-t member 224 is disposed in the cylinder support member 210 through a packing seal 222 and faces the pressure plate 216. The check valve support member 224 is coupled to the cylinder support member 210 by bolts 226. Bolt holes 223 extend through the chec]c valve support member 224. Bolts 225 are inserted in the bolt holes 223 and meshed with nuts 229, respectively. Thus, the lubricant supply apparatuses 208 are fixed on the underframe 18 (Fig. 1).
An oil transfer path 227 which communicates with the pump chamber 220 is formed in the check valve support member 224. The oil transfer path 227 is defined by the check valve support member 224 and a steel ball. A check valve 228 is disposed in the path 227, ~ , - 15 ~
The check valve 228 comprises a ~alve seat 230, a valve body 232 and a spring 234. A valve hole 236 which communicates with the pump chamber is formed in the valve seat 230. A sealing material 238 is disposed between the valve body 232 and the valve seat 230. The spring 234 urges the valve body 232 against the valve seat 230.
~n insulator 241 is detachably fixed by a through bolt 242 so as to face the -heck valve support member 224 of the cylinder support member 210. The insulator 241 is detachable from the pump drive mechanism 2110 The pump drive mechanism 211 is defined by a casing 244 and a rear cover 245. A coil 246 received in case 247 is disposeZ along the inner wall of the casing 244.
A plunger 248 is surrounded by the coil 246. A hole 256 extends through the plunger 248 along its longitudinal axis. The hole 256 crosses the plunger 248 and com-municates with a cavity providing a stroke Q of the piston.
A stationary core 250 is adjacent to a connecting member 252 of the coil 246. When the coil 246 is not excited, a predetermined stroke is kept between the plunger 248 and the stationary core 250. The connecting member 252 and a pusher 254 are disposed between the pump mechanism 209 and the pump drive mechanism 211.
The connecting member 252 has a predetermined length and detachably disposed to abut against the rear surface of the pressure plate 216. A bearing 258 which supports J~,~
the connecting member 252 is disposed in the hole in which the connecting member 252 is mounted. The other end of the connecting member 252 abuts against the pusher 254. The pusher 254 has a small diameter portion 254a and a large diameter portion 254b so as to form a step. The small diameter portion 254a is fitted in the forward end of the hole 25~. The pusher 254 is held in the plunger 248 through a washer 255.
A replenishment path ~0 ~or replenishing the pump chamber 220 of the lubricant is formed in the cylinder support member 210. The replenishment path 260 comprises an oil pipe 262 and an oil transfer hose 264.
One end of the oil pipe 262 is defined by the cylinder support member 210 and a steel ball 265. The oil pipe 262 communicates with the pump chamber 220 disposed at the head of the cylinder hole 218. The oil transfer hose 264 is connected to the other end of the oil pipe 262 through a joint 261 The oil supply hose 264 is connected to an oil tank (not shown) to kransfer the lubricant to the pump.
An oil transfer pipeline 268 for delivering the lubricant from the pump chamber is connected to the check valve support member 224~ The oil transfer pipeline 268 comprises a spray nozzle 270 and an oil transfer pipe 272. The oil transfer pipe 272 is connected to the check valve support member 224 through a joint 274. The spray nozzle 270 is connected to the ~r~
top of the oil transfer pipe 272 through a joint 276.
In this embodiment, four spray nozzles 270 extending from the four pump chambers respectively are disposed to be apart from a plurality of wheel edges and rail edges. The spray nozzles 270 are mounted on the underframe 18.
The spray nozzle 270 comprises a valve seat 278, a hood 280, a nozzle main body 282r a valve body 284 and a spring 286. The spray nozzle 270 is fixed at a nozzle support member (not shown) by a nut 290. A valve hole 292 is formed at the center of the valve seat 278. The hood 280 surrounds the nozzle main body 282 screwed in the valve seat 278 to protect the nozzle main body 282.
A nozzle hole 294 is formed inside the nozzle main body i5 2a2. A sealing member 296 is disposed in the valve body 284. The spring 286 urges the valve body 284 against the valve seat 278.
An electric wire is connected to the coil 246 through a path 298 for electric connections.
The mode of operation of the lubricant supply apparatus according to the third embodiment of the present invention will now be described.
A DC current from a control circuit (not shown) via the path 298 flows through the coil 246. The plunger 246 is abruptly moved toward the stationary core 250 of the pump drive mechanism 211. The pressure of air between the stationary core 246 and the plunger 248 is kept constant by the hole 256 for discharging the air. The movement of the plunger 248 is trans-mitted to the pressure plate 216 through the pusher 254 and the connecting member 252. The pressure plate 216 urges the four pistons 212 against the urging forces of the springs 214, respectively. The piston 212 is abruptly moved to decrease the volume o~ the pump chamber 220.
When the pressure in the pump chamber 220 is increased and reaches a predetermined~value, the check valve 228 is opened~ The lubricant is forcibly supplied to the oil transfer pipeline 268. The lubricant is kept in the oil transfer pipeline 268 at a predetermined pressure.
Therefore, when the lubricant is forcibly supplied from the pump chamber 220 to the oil transfer pipeline 268, the pressure thereof is immediately transmitted to open the valve hole 292. The lubricant is then sprayed from the four spray nozzles 270 in a rod shape, simultaneously.
The lubricant injected from each nozzle is applied to the flanged surface 14a for a predetermined length against the air pressure caused by traveling of the rolling stock car (Fig. 1). When the pump drive mechanism 211 is deenergized, the pistcn 212 is returned to the original position by the urging force of the spring 214.
Simultaneously, the lubricant is drawn from the replenishment path 260 and the pressure plate 216 returns to the initial position upon movement of the piston.
/
ilJ i~.J _S~
The same effects as in the firs-t embodiment are obtained in the third embodiment.
Yurther, according to the lubricant supply apparatus of the third embodiment, the lubricant can be supplied simultaneously to the four wheels by one lubricant supply apparatus.
Therefore, the lubricant is mixed with the pressurized air and sprayed from the nozzle to the edges of the wheels.
However, the conventional lubrican-t supply apparatus has the following drawbacks:
a) Since the air pipeline must be provided besides the oil transfer pipeline, mounting operation becomes complex and maintenance becomes cumbersome.
b) Since a great amount of air is used, the rate of operation of a compressor is high, resulting in waste o~ energy.
c) Since the air reservoir for the wheel brake is used as the drive source cf the oil transfer pump, trouble in the air pipeline adversely affects the operation of the brake mechanism.
,d) Moisture contained in the pressurized air in the air pipeline is frozen in cold areas, so that the electromagnetic valve or the oil transfer pump may not be lubricated properly.
e) Since the lubricant is mixed with the air and sprayed from the nozzle and the spray is subject to an air pressure acting against the travelling direction of a rollins stock car, part of the lubricant floats in the air in the form resembling mist, resulting in waste of the lubricant.
It is, ~herefore, a!l object of .he p-esent invention to provide a lubricant supply apparatus which is easily mounted to a rolling stock car, which requires easy maintenance, which has safety, and which ! ~
results in saving of energy.
A lubricant supply appara-tus according to the present invention has a purnping means, a supplying means, a transferring means, a pump driving means, and a connecting means. The pump driving means has a cylinder housing with an elongate hole. A piston is slidably disposed in the elongate hole. A pump chamber is defined by the cylinder housing and one side of the piston. A spring means is disposed in -the cylinder housing to urge the piston in one direction so as to increase the volume of the pump chamber. The pump chamber has a rirst check valve to allow flow of the lubricant therethrough. The supplyin~ means Eor supplying the lubricant to the pump chamber communicates therewith. Further, the pump chamber has the transferring means for transferring the lubricant.
The transferring means has a delivery means and a nozzle means. The delivery means delivers -the lubricant from the pump chamber through the first check valve. The nozzle means is disposed in the delivery means and has a second check valve to maintain the oil pressure in the delivery means. The pump driving means has a plunger and a coil means. The plunger is free to move reciprocally in the elonga-te hole with predetermined strokes. A DC current flows through the coil means to cause the plunger to move toward the piston. Tne connecting means is connected to the plunger to control the strokes of the piston.
Upon movement of the plunger toward the piston, the piston is moved with the strokes against the urging force of the spring means. A prede-termined amount of lubricant is delivered through the first check valve.
In accordance with the above structure, the pre-sent invention can provide a lubricant supply apparatus, which is easily mounted to a rolling stock car, whose main-tenance is easily performedr which has safety, and which results in saving of energy.
This invention can be more fully understood from the following detailed description when taken in conjunc-tion with the accompanying drawings, in which:
Figure 1 is a schematic side view of a rolling stock car having a lubricant supply apparatus according to the present invention;
Figure 2A is a partially sectional view of an oil transfer pipeline which is to connect to the main body of the lubricant apparatus according to a first or a second embodiment of the present invention;
Figure 2B is a partially sectional side view of a main body of a lubricant supply apparatus according to a first embodiment of the present invention;
Figure 3 is a side view of the lubricant supply apparatus when viewed from the direction indicated by arrow III in Figure 2B;
Figure 4 is a sectional view o a main body of a lubricant supply apparatus according to a second embodiment of the present invention;
Figure 5 is a side view of a lubricant supply apparatus according to a third embodiment of the present i.nvention; and Figure 6 is a sectional side view taken along the line IV - IV in Figure 5.
A lubricant supply apparatus according to the first embodiment of the present invention will be described with reference to Figures 1 to 3.
Referring to Figure 1, a rolling stock car 10 standing on rails 12 comprises a body 20 and an underframe 13 therebelow. The underframe 18 is rotatably connected to the body 20 through center plates 22. The underframe 18 has wheels 14 which contact with the rails 12. Lubricant supply apparatuses 16 according to the present invention are disposed on the upper part of the underframe 18.
The lubricant supply apparatus 16 comprises a pump mechanism 25 and a pump drive mechanism 50 as shown in Figures 2B and 3. The pump mechanism 25 comprises a main body 24, a cylinder wall cylinder 26, a pump chamber elongate hole 28, a piston 30, a spring 32 and a check valve 34. A cylinder support member 36 is screwed in one side sf the main body 24. A cylinder wall 26 is inserted into and supported by the cylinder support member 36 through ~'~q ~
a sealing material 37. One end of the piston 30 is slidably inserted along the cylinder wall 26. The pump chamber 28 is defined by the cylinder wall 26 and one end of the piston 30. The spring 32 is mounted at the other end of the piston 30. One end o~ the spring 32 is fixed on the outer surface of the cylinder wall 26 and the other end thereof is fixed at a large diameter portion 30a formed on the piston 30. The spring 32 constantly urges the piston~30 in the direction to increase the volume of the pump chamber 28. If the outer force does not act on the piston 30, the large diameter portion 30a abuts against a stopper stepped portion 36a. A vent hole 39 is formed in the vicinity of the stopper stepped portion 36a of the c~-linder support member 36. A check valve support member 38 is screwed in the main body 24 and faces the cylinder support member 36. A check valve 34 is disposed at the top of the check valve support member 38. The check valve 34 communicates with the pump chamber 28 and allows to only flow the lubricant from the pump chamber 280 The check valve 34 comprises a valve seat 42, a valve body 46 and a spring 48. A valve hole 40 which cornmunicates with the pump chamber 28 is formed in the valve seat 42. The valve body 46 has a sealing material 44 seated on the valve seat 42. The spring 48 urges the valve body 46 against the valve seat 42.
A pump drive mechanism 50 is disposed adjacent to the main body 24. The pump drive mechanism 50 is detachably mounted to one side surface of the main body 24 by bolts 52 and tongued washers 54. The tongues of the washers 54 are hooked at edges to prevent loosening of the bolts 52.
The pump drive mechanism 50 is deEined by a casing 56. The casing 56 has a detachable rear cover 51.
A coil 58 received in a case 59 îs wound along the inner wall of the casing 56. Both ends of the coil 58 are guided to a path 112 for electric connections. A DC current flows through the coil 58 via the path 112. A plunger 60 surrounded by the coil 58 is disposed on the axis of the piston 30. A stationary core stopper 62 is adjacent to the plunger 60 in the direction of movement of the plunger 60.
When the coil 58 is not excited, a predetermined stroke ~
is kept between the plunger 60 and the stationary core 62.
A cushion 64 is disposed between the rear cover 51 and the rear portion of the plunger 60.
A connecting member 66 for controlling the stro-kes of the piston 30 is disposed between the pump mechanism 25 and the pump drive mechanism 50. The connecting member 66 is a rod-shaped member having a predetermined length.
The stroke of the piston is determined by this length, Both ends of the connecting member 66 abut against the plunger 60 and the piston 30 and the connecting member 66 is supported thereby. If the ; A . ~.
connectlng ~nember 66 is replaced with another connecting member having a different length, the stroke of the piston is determined thereby and the amount of lubricant to be delivered is controlled. A sleeve 68 is disposed in the hole of the cylinder support member 36 to slidably guide the connecting member 66.
A replenishment path 70 for replenishing the lubricant is communicated with the pump chambex 28. I'he replenishment path 70 compx1.ses a ring-shaped cav--ty 72, a suction hole 74, an oil path 76 and an oil suppl~
hose 80. The cavity 72 is formed to surround the outer circumferense of the cylinder wall 26 which defines the pump chamber 28~ The suction hole 74 is formed to communicate with the pump chamber 28 formed at the head of the cylinder wall 26 and with the cavity 72. One end of the oil path 76 is opened to the cavi-ty 72 and the other end thereof is opened to the side surface of the main body 24. The oil supply hose 80 is connected to the other end of the oil path 76 through a ~oint 78.
The oil supply hose 80 communicates with a oil tank (not shown) to introduce the lubricant into the pump chamber 28.
~ n oil transfer pipeline 82 for delivering the lubri.cant communicates with the pump chamber 28. The oil transfer pipeline 82 comprises an oil transfer pipe 86 and a flexible hose 90. The oil transfer pipe 86 is connected through the check valve support member 38 and q ~
9 ~
a joint 84. The flexible hose 90 is connected to the top of the oil transfer pipe 86 through a relay joint 88.
A spray nozzle 92 is connected to the top of the oil transfer pipeline 82 through a joint 94. The spray nozzles 92 are disposed apart from the edges of the wheels (flanged surfaces l~a of the wheels 14) or the edges of the rails (inner side surfaces of the rails 12 which oppose each other) respectively. The spray nozzle 92 is fixed on the underframe 18 by a 10 nozzle support member 93. The spray nozzle 92 comprises a valve seat 98, a hood 100, a nozzle main body 104, a valve body 108 and a spring 110. The valve seat 98 is screwed at the top of the nozzle support member 93. A valve hole 96 is formed in the valve seat 15 98. The hood 100 surrounds the nozzle main body 104 screwed ln the valve seat 98 and protects the nozzle main body 10~. A nozzle hole 102 is formed inside the nozzle main body 104. The valve body 108 is sealed by a sealing material 106. The valve body 108 is tightly 20 urged against the valve seat 98 by the spring 110.
The mode of operation o the lubricant supply apparatus 16 will be described. When a DC current is applied across the coil 58 by a control circuit ~not shown) via the path 112, the plunger 60 is abruptly 25 moved toward the stationary core 62. The movement is transmitted to the piston 30 through the connecting member 66. The piston 30 is then abruptly moved to coMpress the spring 32 so tha-t the volume of the pump chamber 28 is reduced. Simultaneously, the path between -the pump chamber 28 and the suction hole 74 is blocked by the top of the piston 30. When the pressure in the pump chamber 28 is raised and reaches a pre-determined pressure, the check valve 34 is opened, and then the lubricant is forcibly supplied to the oil transfer pipeline 82. The lubricant is sealed in the oil transfer pipeline 82 at a predetermined pressure.
There~ore, when the lubricant is forcibly supplied to the oil transfer pipeline 82 from the pump mechanism 25, tke pressure is iml-nediately transmitted to open the valve hole 96. The lubricant is thus sprayed from the nozzle hole of the spray nozzle 92 in a rod-shape and at a high speed. The predetermined amount of oil is supplied along the flanyed surface 14a against the air pressure callsed by travelling the rolling stock car.
When the coil 58 is deenergized, the piston 30 restores its original position by the urging force of the spring 32~ Simultaneously, the lubricant is drawn from the pump chamber 28 from the replenishment path 70 to the pump chamber 28 and the plunger 60 is re-turned through the connecting member 66. Thus, the predetermined amount of lubricant is stored for the next replenishing operation.
I'he following effects are obtained according to the lubricant supply apparatus of the first embodimert.
The air pipeline is not used and only the oil pipeline is used. Therefore, the structure of the apparatus is simplified, and the apparatus is easily mounted to the rolling stock car, also allowing simple maintenance.
As a compressor is not used, energy is efficiently saved.
The lubricant supply apparatus according to one embodiment of the present invention is arranged independently of the bxake system. Even if the lubricant supply apparatus is broken, the brake system is not influenced by such trouble.
As described above, the air pipeline is not used.
Therefore, the conventional problem that the moisture contained in the compressed air in the air pipeline is frozen in cold areas may not occur, thus preventing the inefficiency of the lubricating operation.
Since the lubricant is sprayed from the nozzle in a rod shape, part of the lubricant may not be blown away in a form resembling mist.
Since the apparatus has a valve in the nozzle, the lubricant may not leak frorn the nozzle. The transfer pipeline is constantly under pressure, so that the small amount and the pressure of lubricant supplied by the pump chamber are accurately transmitted. Therefore, the small amount of lubricant can be inje~ted quantitatively.
The DC current is appli d to the coil of the apparatus. Even if a gap between the stationary core and the plunger is formed over a long period of time, the coil may not be burnt due to a surge voltage which may be applied upon supply of an AC current. Therefore, the blown particles of the lubricant may not be burnt.
Further, the amount oE lubricant to be supplied can be controlled.
A lubricant supply apparatus 17 according to the second embodiment of the present invention will be described with reference to Figures 1 and 4. The same reference numerals as in the first embodiment denote the same parts in the second embodiment, and a detailed description thereof will be omitted.
Male threads are formed on one side of the con-necting member screw member 67 and engaged with female threads extending through the plunger 60 along its longitu-dinal axis direction. A fixing nut 118 is screwed around the rear portion of the plunger 60 to fix the plunger 60 and the connecting member 67. The shaft portion 30b coaxially extends from the large diameter portion 30a of the piston 30. An end of the shaft portion 30b abuts against the other end of the connecting member 67.
In order to adjust the amount of lubricant to be delivered, the rear cover 51 and the cushion 64 must be removed from the casing 56. The fixing nut 118 must then be loosened. The connecting member 67 is then rotated relative to the plunger 60 to adjust the stroke of the piston 30.
The same effects as in the first embodiment are obtained in the second embodiments.
Further, according to the lubricant supply apparatus of the second embodiment, the positional relation between the connecting member and the plunger is changed to ad~ust the amount of lubricant to be delivered.
A lubricant supply apparatus according to the third embodiment of the present invention will be described with reference to Figures 1, 5 and 6.
A lubricant supply apparatus 208 comprises a pump mechanism 209, a pump drive mechanism 211 and a check valve support member 224.
The pump mechanism 209 comprises a cylinder sup-port member cylinder housing 210, four pistons 212, four springs 214 and a pressure plate surface 216. Four cylinder holes 218 are formed in the cylinder support member 210 in a circular shape at equal angular intervals.
Four through holes 251 are alternately formed parallel to the cylinder holes 218. A connecting member 253 for replacement is inserted in the through hole 251.
- One end of the piston 212 is slidably inserted in each cylinder hole 218. A pump chamber 220 is deined by one 25 end of a piston 212 and the cylinder hole 218. The spring 214 is wound around the other end s~
of the piston 212 ex-tending from the cylinder hole 218.
One end of the spring 214 is fixed at the cylinder support member 210, while the other end thereof is fixed at the large diameter portion 212a of the piston 212. The spring 214 constantly urges the piston 212 to increase the volume of the pump chamber 220. The pressure plate 216 is disposed at the other end o-f -the piston 212. The other end of the piston 212 constantly abuts against the surface ^~ the pressure plate 216 hy the urging force of the spring 214. The pressure plate 216 is a disc-shaped member and is in uniform con-tact with the piston.
The check valve suppor-t member 224 is disposed in the cylinder support member 210 through a packing seal 222 and faces the pressure plate 216. The check valve support member 224 is coupled to the cylinder support member 210 by bolts 226. Bolt holes 223 extend through the chec]c valve support member 224. Bolts 225 are inserted in the bolt holes 223 and meshed with nuts 229, respectively. Thus, the lubricant supply apparatuses 208 are fixed on the underframe 18 (Fig. 1).
An oil transfer path 227 which communicates with the pump chamber 220 is formed in the check valve support member 224. The oil transfer path 227 is defined by the check valve support member 224 and a steel ball. A check valve 228 is disposed in the path 227, ~ , - 15 ~
The check valve 228 comprises a ~alve seat 230, a valve body 232 and a spring 234. A valve hole 236 which communicates with the pump chamber is formed in the valve seat 230. A sealing material 238 is disposed between the valve body 232 and the valve seat 230. The spring 234 urges the valve body 232 against the valve seat 230.
~n insulator 241 is detachably fixed by a through bolt 242 so as to face the -heck valve support member 224 of the cylinder support member 210. The insulator 241 is detachable from the pump drive mechanism 2110 The pump drive mechanism 211 is defined by a casing 244 and a rear cover 245. A coil 246 received in case 247 is disposeZ along the inner wall of the casing 244.
A plunger 248 is surrounded by the coil 246. A hole 256 extends through the plunger 248 along its longitudinal axis. The hole 256 crosses the plunger 248 and com-municates with a cavity providing a stroke Q of the piston.
A stationary core 250 is adjacent to a connecting member 252 of the coil 246. When the coil 246 is not excited, a predetermined stroke is kept between the plunger 248 and the stationary core 250. The connecting member 252 and a pusher 254 are disposed between the pump mechanism 209 and the pump drive mechanism 211.
The connecting member 252 has a predetermined length and detachably disposed to abut against the rear surface of the pressure plate 216. A bearing 258 which supports J~,~
the connecting member 252 is disposed in the hole in which the connecting member 252 is mounted. The other end of the connecting member 252 abuts against the pusher 254. The pusher 254 has a small diameter portion 254a and a large diameter portion 254b so as to form a step. The small diameter portion 254a is fitted in the forward end of the hole 25~. The pusher 254 is held in the plunger 248 through a washer 255.
A replenishment path ~0 ~or replenishing the pump chamber 220 of the lubricant is formed in the cylinder support member 210. The replenishment path 260 comprises an oil pipe 262 and an oil transfer hose 264.
One end of the oil pipe 262 is defined by the cylinder support member 210 and a steel ball 265. The oil pipe 262 communicates with the pump chamber 220 disposed at the head of the cylinder hole 218. The oil transfer hose 264 is connected to the other end of the oil pipe 262 through a joint 261 The oil supply hose 264 is connected to an oil tank (not shown) to kransfer the lubricant to the pump.
An oil transfer pipeline 268 for delivering the lubricant from the pump chamber is connected to the check valve support member 224~ The oil transfer pipeline 268 comprises a spray nozzle 270 and an oil transfer pipe 272. The oil transfer pipe 272 is connected to the check valve support member 224 through a joint 274. The spray nozzle 270 is connected to the ~r~
top of the oil transfer pipe 272 through a joint 276.
In this embodiment, four spray nozzles 270 extending from the four pump chambers respectively are disposed to be apart from a plurality of wheel edges and rail edges. The spray nozzles 270 are mounted on the underframe 18.
The spray nozzle 270 comprises a valve seat 278, a hood 280, a nozzle main body 282r a valve body 284 and a spring 286. The spray nozzle 270 is fixed at a nozzle support member (not shown) by a nut 290. A valve hole 292 is formed at the center of the valve seat 278. The hood 280 surrounds the nozzle main body 282 screwed in the valve seat 278 to protect the nozzle main body 282.
A nozzle hole 294 is formed inside the nozzle main body i5 2a2. A sealing member 296 is disposed in the valve body 284. The spring 286 urges the valve body 284 against the valve seat 278.
An electric wire is connected to the coil 246 through a path 298 for electric connections.
The mode of operation of the lubricant supply apparatus according to the third embodiment of the present invention will now be described.
A DC current from a control circuit (not shown) via the path 298 flows through the coil 246. The plunger 246 is abruptly moved toward the stationary core 250 of the pump drive mechanism 211. The pressure of air between the stationary core 246 and the plunger 248 is kept constant by the hole 256 for discharging the air. The movement of the plunger 248 is trans-mitted to the pressure plate 216 through the pusher 254 and the connecting member 252. The pressure plate 216 urges the four pistons 212 against the urging forces of the springs 214, respectively. The piston 212 is abruptly moved to decrease the volume o~ the pump chamber 220.
When the pressure in the pump chamber 220 is increased and reaches a predetermined~value, the check valve 228 is opened~ The lubricant is forcibly supplied to the oil transfer pipeline 268. The lubricant is kept in the oil transfer pipeline 268 at a predetermined pressure.
Therefore, when the lubricant is forcibly supplied from the pump chamber 220 to the oil transfer pipeline 268, the pressure thereof is immediately transmitted to open the valve hole 292. The lubricant is then sprayed from the four spray nozzles 270 in a rod shape, simultaneously.
The lubricant injected from each nozzle is applied to the flanged surface 14a for a predetermined length against the air pressure caused by traveling of the rolling stock car (Fig. 1). When the pump drive mechanism 211 is deenergized, the pistcn 212 is returned to the original position by the urging force of the spring 214.
Simultaneously, the lubricant is drawn from the replenishment path 260 and the pressure plate 216 returns to the initial position upon movement of the piston.
/
ilJ i~.J _S~
The same effects as in the firs-t embodiment are obtained in the third embodiment.
Yurther, according to the lubricant supply apparatus of the third embodiment, the lubricant can be supplied simultaneously to the four wheels by one lubricant supply apparatus.
Claims (10)
1. A lubricant supply apparatus for supplying lubricant to the edges of at least one of a wheel and a rail without bringing a nozzle means for injecting lubri-cant into contact with said edges of a wheel or a rail, comprising:
a cylinder housing having an elongate hole extending in opposite directions;
pumping means for delivering a predetermined amount of lubricant, said pumping means having a piston which is slidably disposed in said elongate hole and which defines a pump chamber together with said cylinder housing, spring means for urging said piston in one direction to increase the volume of said pump chamber, and a first check valve for allowing only delivery of the lubricant from said pump chamber;
supplying means, communicating with said pump chamber, for supplying the lubricant to said pump chamber;
transferring means having delivering means which communicates with said pump chamber to deliver the lubri-cant flowing out from said pump chamber in the other direc-tion through said first check valve upon movement of said piston, and said nozzle means, said nozzle means having a second check valve disposed at said delivering means to maintain said delivering means with a constant pressure such that the lubricant is sprayed from the nozzle means in a rod shape and at a high speed toward said edge of a wheel or a rail;
pump driving means having a plunger which is reciprocally movable along said elongate hole therein with a constant stroke and coil means through which a DC current flows to cause said plunger to move toward said piston;
and connecting means having a given length, connected to said plunger, for controlling the stroke of said piston, the length of the connecting means determining the stroke of said piston;
whereby said piston is moved with a controlled stroke against the urging force of said spring means upon movement of said plunger toward said piston and a predeter-mined amount of lubricant is delivered through said first check valve.
a cylinder housing having an elongate hole extending in opposite directions;
pumping means for delivering a predetermined amount of lubricant, said pumping means having a piston which is slidably disposed in said elongate hole and which defines a pump chamber together with said cylinder housing, spring means for urging said piston in one direction to increase the volume of said pump chamber, and a first check valve for allowing only delivery of the lubricant from said pump chamber;
supplying means, communicating with said pump chamber, for supplying the lubricant to said pump chamber;
transferring means having delivering means which communicates with said pump chamber to deliver the lubri-cant flowing out from said pump chamber in the other direc-tion through said first check valve upon movement of said piston, and said nozzle means, said nozzle means having a second check valve disposed at said delivering means to maintain said delivering means with a constant pressure such that the lubricant is sprayed from the nozzle means in a rod shape and at a high speed toward said edge of a wheel or a rail;
pump driving means having a plunger which is reciprocally movable along said elongate hole therein with a constant stroke and coil means through which a DC current flows to cause said plunger to move toward said piston;
and connecting means having a given length, connected to said plunger, for controlling the stroke of said piston, the length of the connecting means determining the stroke of said piston;
whereby said piston is moved with a controlled stroke against the urging force of said spring means upon movement of said plunger toward said piston and a predeter-mined amount of lubricant is delivered through said first check valve.
2. An apparatus according to claim 1, wherein said cylinder housing further has a stopper to stop said piston against the urging force of said spring means when said piston is moved for a predetermined length in one direction.
3. An apparatus according to claim 1, wherein said plunger has a vent hole extending therethrough in the direction of movement of said plunger.
4. An apparatus according to claim 1, wherein said connecting means has a connecting member which is detachably disposed between said plunger and said piston.
5. An apparatus according to claim 1, wherein said connecting means has a screw member which is meshed with said plunger.
6. An apparatus according to claim 4, wherein said cylinder housing has mounting means for mounting a connecting member for replacement.
7. An apparatus according to claim 6, wherein said mounting means has a hole which is formed in said cylinder housing and in which said connecting means for replacement is inserted.
8. An apparatus according to claim 1, wherein:
said cylinder housing comprises a plurality of pumping means, a plurality of supplying means and a plura-lity of transferring means, said pluralities of supplying and transferring means communicating with each of said plurality of pumping means; and said connecting means has a surface to urge said piston against the urging force of said spring means.
said cylinder housing comprises a plurality of pumping means, a plurality of supplying means and a plura-lity of transferring means, said pluralities of supplying and transferring means communicating with each of said plurality of pumping means; and said connecting means has a surface to urge said piston against the urging force of said spring means.
9. An apparatus according to claim 8, wherein said cylinder housing has four pumping means, four supplying means and four transferring means, said four pumping means being disposed at equal intervals, and each of said four pumping means communicating with each of said four supplying means and each of said four transferring means.
10. An apparatus according to claim 1, wherein said connecting means has a selectable length so as to selectively vary the stroke of said piston as a function of the length of said connecting means.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP85477/81 | 1981-06-03 | ||
| JP56085477A JPS57201758A (en) | 1981-06-03 | 1981-06-03 | Non-contact lubricating device for wheel edhe or rail edge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1200211A true CA1200211A (en) | 1986-02-04 |
Family
ID=13859984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000404399A Expired CA1200211A (en) | 1981-06-03 | 1982-06-03 | Lubricant supply apparatus |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS57201758A (en) |
| KR (1) | KR860000170B1 (en) |
| CA (1) | CA1200211A (en) |
| CH (1) | CH659692A5 (en) |
| DE (1) | DE3220277A1 (en) |
| FR (1) | FR2507284A1 (en) |
| IT (1) | IT1151444B (en) |
| ZA (1) | ZA823693B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2938043B1 (en) * | 2008-10-31 | 2010-12-24 | Skf Ab | LUBRICATION DEVICE AND USE FOR LUBRICATING A WHEEL BOLT OF A RAILWAY VEHICLE. |
| CN104071179A (en) * | 2014-07-18 | 2014-10-01 | 成都市新筑路桥机械股份有限公司 | Lubricating device for low-floor tram rim |
| DE102022121637A1 (en) | 2022-08-26 | 2024-02-29 | Rebs Zentralschmiertechnik Gmbh | Airless lubricant system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH86505A (en) * | 1920-05-06 | 1920-09-01 | Bertschmann Jakob | Drum flange lubricator with electromagnetic control. |
| US2306013A (en) * | 1940-06-14 | 1942-12-22 | Caprez Anton | Flange lubricator |
| JPS5547977Y2 (en) * | 1975-07-18 | 1980-11-10 | ||
| JPS5415504A (en) * | 1977-06-10 | 1979-02-05 | Daisan Kogyo | Solenoid plunger pump |
| GB2021703B (en) * | 1978-05-25 | 1983-02-09 | Madison Kipp Corp | Electrical lubricating apparatus |
| JPS5795292A (en) * | 1980-11-30 | 1982-06-14 | Mitsui Eng & Shipbuild Co Ltd | Sail device |
| JPS5822384A (en) * | 1981-07-31 | 1983-02-09 | Asahi Glass Co Ltd | Electrolytic cell group |
-
1981
- 1981-06-03 JP JP56085477A patent/JPS57201758A/en active Pending
-
1982
- 1982-05-27 ZA ZA823693A patent/ZA823693B/en unknown
- 1982-05-28 KR KR8202385A patent/KR860000170B1/en active
- 1982-05-28 DE DE19823220277 patent/DE3220277A1/en not_active Withdrawn
- 1982-06-02 FR FR8209614A patent/FR2507284A1/en active Granted
- 1982-06-03 IT IT21676/82A patent/IT1151444B/en active
- 1982-06-03 CA CA000404399A patent/CA1200211A/en not_active Expired
- 1982-06-03 CH CH3439/82A patent/CH659692A5/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| FR2507284A1 (en) | 1982-12-10 |
| CH659692A5 (en) | 1987-02-13 |
| KR860000170B1 (en) | 1986-02-28 |
| FR2507284B1 (en) | 1984-08-24 |
| KR830009968A (en) | 1983-12-24 |
| IT8221676A0 (en) | 1982-06-03 |
| DE3220277A1 (en) | 1983-01-05 |
| IT1151444B (en) | 1986-12-17 |
| ZA823693B (en) | 1983-03-30 |
| JPS57201758A (en) | 1982-12-10 |
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Legal Events
| Date | Code | Title | Description |
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| MKEX | Expiry |