1. Slide bearing grease supplied to between a slide bearing formed of a porous sintered alloy-made busing having pores impregnated with lubricating oil and a shaft inserted in said slide bearing and supported to be slidingly rotatable in the circumferential direction,
wherein the slide bearing grease contains base oil having dynamic viscosity lower than that of the lubricating oil and exuding under a load of said shaft to form an oil film between said slide bearing and said shaft, the slide bearing grease being added with at least a solid lubricant.
2. The slide bearing grease according to claim 1, wherein the base oil has dynamic viscosity of 10-70 mm2s at 40\xb0 C.
3. The slide bearing grease according to claim 1, wherein said solid lubricant contains at least one selected from among organic molybdenum, molybdenum disulfide, tungsten disulfide, boron nitride, graphite, nylon, polyethylene, polyimide, polyacetal, polytetrafluoroethylene, and polyphenylene sulfide.
4. The slide bearing grease according to claim 1, wherein an extreme-pressure agent and a greasy agent are added in the slide bearing grease.
5. The slide bearing grease according to claim 2, wherein said solid lubricant contains at least one selected from among organic molybdenum, molybdenum disulfide, tungsten disulfide, boron nitride, graphite, nylon, polyethylene, polyimide, polyacetal, polytetrafluoroethylene, and polyphenylene sulfide.
6. The slide bearing grease according to claim 2, wherein an extreme-pressure agent and a greasy agent are added in the slide bearing grease.
7. The slide bearing grease according to claim 3, wherein an extreme-pressure agent and a greasy agent are added in the slide bearing grease.
8. Slide bearing grease supplied to between a slide bearing formed of a porous sintered alloy-made bushing having pores impregnated with a lubricating oil and a shaft inserted in said slide bearing and supported to be slidingly rotatable in the circumferential direction,
wherein the slide bearing grease contains base oil having dynamic viscosity lower than that of the lubricating oil and exuding under a load of said shaft to form an oil film between said slide bearing and said shaft.
9. The slide bearing grease according to claim 8, wherein the base oil has dynamic viscosity of 10-70 mm2s at 40\xb0 C.
10. Slide bearing grease supplied to between a slide bearing formed of a porous sintered alloy-made bushing having pores impregnated with a lubricating oil, in which a solid lubricant is mixed, and a shaft inserted in said slide bearing and supported to be slidingly rotatable in the circumferential direction,
wherein the slide bearing grease contains base oil having dynamic viscosity lower than that of the lubricating oil, the dynamic viscosity of 10-70 mm2s at 40\xb0 C., and exuding under a load of said shaft to form an oil film between said slide bearing and said shaft.
11. The slide bearing grease according to claim 8, wherein an extreme-pressure agent and a greasy agent are added in the slide bearing grease.
12. The slide bearing grease according to claim 9, wherein an extreme-pressure agent and a greasy agent are added in the slide bearing grease.
13. The slide bearing grease according to claim 10, wherein an extreme-pressure agent and a greasy agent are added in the slide bearing grease.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A conveyor system comprising:
a plurality of endless narrow belts for supporting conveyed articles; and a diverter for directing conveyed articles off the narrow belts on to a spur to a first destination, the diverter comprising a plurality of rotating wheels located between the narrow belts oriented obliquely to the narrow belts and arranged in a plurality of rows, the diverter wheels in each row being mounted to be raised and lowered in unison independently of the diverter wheels in any other row from a first position in which the wheels are entirely beneath the upper surface of the narrow belts to a second position in which a portion of the wheels protrudes above the upper surface of the narrow belts
2. The conveyor system of claim 1 further comprising a controller for sequentially raising and lowering the rows of wheels so that each row of diverter wheels is raised just before a first item being transported by the conveyor passes over that row of wheels and is lowered just after the first item has cleared that row of wheels, provided that a second, following item is not going to the first destination.
3. The conveyor system of claim 1 further comprising a support for each row of wheels and an actuator for each support to move the support between the first and second positions.
4. The conveyor system of claim 3 wherein the support for each row of wheels is pivotably mounted to the conveyor so that the wheels move in an arcuate motion between the first and second positions.
5. The conveyor system of claim 1 wherein the amount which the wheels protrude above the upper surface of the narrow belts when in the second position increases in the direction of travel of the narrow belts.
6. A method of operating the conveyor system comprising at least one conveyor belt and a diverter comprising at least two rows of diverter wheels, each row of diverter wheels being capable of raising and lowering independently of the other row, the method comprising:
assigning a first destination code to each conveyed item to be diverted and a second destination code different from the first for each conveyed item that is not to be diverted,
measuring the movement of the conveyor belt with an encoder that generates a pulse for each increment of movement of the conveyor,
tracking the movement and position of the conveyed items along the conveyor,
generating a separate raise signal for each row of diverter wheels to sequentially raise the rows of diverter wheels when each conveyed item that is assigned the first destination code reaches a predetermined position upstream of each row of diverter wheels; and
generating a separate lower signal for each row of diverter wheels to sequentially lower the rows of diverter wheels.
7. The method of claim 6 wherein the lower signal is generated when each conveyed item that is assigned the first destination code reaches a predetermined position downstream of each row of diverter wheels.
8. The method of claim 6 wherein the lower signal for each row of diverter wheels is generated a specified time after the raise signal for each row was generated.