Five-plunger emulsion pump

Abstract

A five-plunger emulsion pump comprises an input shaft and a crankshaft. An even number of input bevel gears are arranged on the input shaft. The input bevel gears include the left input bevel gears and the right bevel gears. The number of the left input bevel gears is the same as that of the right input bevel gear. Three input bearings are arranged on the input shaft and arranged at the two ends and the middle of the input shaft respectively. Crankshaft bevel gears correspondingly meshed with the input bevel gears are arranged on the crankshaft. Three crankshaft bearings are arranged on the crankshaft and arranged at the two ends and the middle of the crankshaft respectively. The herringbone gear pair transmission technology is adopted, and damage caused by axial component force of a traditional one-sided bevel gear pair to supporting bearings is eliminated; the supporting mode that the middle supporting point of the crankshaft and the middle supporting point of the input shaft are distributed in an intersected manner is creatively adopted; and split bearing covers are adopted for middle bearings, and therefore under the condition that the overall strength is not lowered, the bearings can be more conveniently replaced, and maintenance and repair are facilitated.

Description

technical field [0001] The invention relates to a five-plunger emulsion pump used in underground coal mines, in particular to a cross-type three-point support five-plunger emulsion pump adopting a herringbone gear pair. Background technique [0002] The emulsion pump station, as an essential and important equipment in the fully mechanized mining face, provides hydraulic power for the hydraulic support of the working face and is the heart of the hydraulic system of the entire working face. In recent years, with the increasing number of fully mechanized mining faces with large mining heights in my country, in order to meet the needs of high initial support force, high working resistance, rapid frame movement and safe support of hydraulic supports with large mining heights, hydraulic supports are supplied with liquid The system puts forward very high requirements in terms of pressure and flow, so it needs a high-pressure and large-flow emulsion pump station for matching, and the...

AI Technical Summary

Problems solved by technology

CN2898367Y discloses a five-plunger emulsion pump, its gear box is arranged on one side of the pump, the middle part of the crankshaft is provided with a floating bearing supported on the box, and the bearing is an inseparable integrated structure; but it also The use of two sets of gears for transmission is not disclosed, nor is the design of the split bearing housing disclosed

At the same time, the axial component force of the single-sided helical gear pair in the above-mentioned five-piston pump will damage the support bearing; the bias torque of the single-sided helical gear pair to the "crankshaft-gear" system will easily cause fatigue fracture of the crankshaft; The side helical gear pair generally requires an independent gearbox structure, which is easy to cause the structure of the emulsion pump to be bloated, and it is impossible to achieve a compact space

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