34results about How to "Reduce direct wear and tear" patented technology

The invention provides a self water-replenishing flat valve plunger type extra-high pressure water pump, which mainly comprises a cavity, a cooling unit, a rotating main shaft and a plunger flow-distribution unit. The cooling unit comprises a cooler and a water-replenishing pump; and the plunger flow-distribution unit comprises a flat valve component and a plunger skid shoe component. The plungerskid shoe component divides the cavity into a pressure chamber and an oil lubrication chamber which are independent from each other. The water-replenishing pump presses water at a water pump inlet into the cooler under the drive of the rotating main shaft, then the water flows into the flat valve component from the cooler to cool the oil lubrication chamber and provide low-pressure pressure waterfor the flat valve component, and simultaneously, the plunger skid shoe component performs reciprocating motion under the drive of the rotating main shaft to ensure that the flat valve component performs water absorbing and draining motions through the water pump inlet and a water pump outlet. The self water-replenishing flat valve plunger type extra-high pressure water pump solves the problems of over-high lubricating oil temperature and insufficient self-adsorption when an oil-water separation type hydraulic pump is used on shore, thereby reducing the running cost and improving the service life of the water pump.

The invention relates to a cross-mounting bottom frame device. The cross-mounting bottom frame device comprises a transversely arranged middle beam assembly, four end sleeper beam assemblies connected with the front and back sides of the two ends of the middle beam assembly respectively, two middle sleeper beam assemblies connected with the front and back sides of the middle of the middle beam assembly respectively, a bottom frame center disc assembly arranged on the upper surface of the middle beam assembly between the two middle sleeper beam assemblies, two steering frame center disc assemblies arranged at the lower surfaces of the two ends of the middle sleeper beam assembly between the two end sleeper beam assemblies respectively, two lower side bearings arranged on the upper surfaces of the free ends of the two middle sleeper beam assembly respectively, and four upper side bearings installed on the lower surfaces of the free ends of the four end sleeper beam assemblies respectively, wherein the middle beam assembly is of a fish-belly-shaped box type structure, the end sleeper beam assemblies and the middle sleeper beam assemblies are respectively of a box structure with the fixed end being gradually thinned to the free end, the length of each end sleeper beam assembly in the horizontal direction is larger than that of each middle sleeper beam assembly, and the height of each end sleeper beam assembly in the vertical direction is smaller than that of each middle sleeper beam assembly. The cross-mounting bottom frame device can combine two double-shaft steering frames into a four-shaft steering frame.

The invention provides a plunger type water pump which mainly comprises a cavity body, a rotary main shaft and a plunger distributing unit, wherein the plunger distributing unit comprises a distributing valve assembly, a plunger piston shoe assembly and a supporting valve assembly; the plunger piston shoe assembly divides the cavity body into a high-pressure cavity and a low-pressure cavity mutually independent; the high-pressure cavity is communicated with the liquid of the distributing valve assembly; and the low-pressure cavity is communicated with the liquid of the supporting valve assembly. The plunger piston shoe assembly driven by the rotary main shaft reciprocates to impel the distributing valve assembly and the supporting valve assembly to cooperate, thus the distributing valve assembly sucks and discharges water through a water pump inlet and a water pump outlet, and simultaneously the supporting valve assembly provides liquid lubrication for the rotary unit. High-pressure water output by the extra-high pressure pump of the invention is mutually independent of the low-pressure water used for static pressure supporting and lubrication, thus ensuring the volumetric efficiency of the water pump in the extra-high pressure condition, ensuring the liquid supporting and lubrication of a friction pair in a high-speed heavy-load condition, and improving the service life of the water pump.