Automatic low-penetration lubricating grease delivery system

Abstract

An automatic low-penetration lubricating grease delivery system comprises a hydraulic pump station, a lubricating grease handler, a grease pump and a composite hydraulic cylinder. An output end of the hydraulic pump station is connected with a three-position four-way electro-hydraulic proportional reversing valve, an access of the three-position four-way electro-hydraulic proportional reversing valve is connected with a hydraulic cavity access on the right side of the composite hydraulic cylinder through a pipeline, a grease pump outlet connected with the lubricating grease handler is connected with a one-way valve bridge through a pipeline, and two side outlets of the one-way valve bridge are respectively connected with a lubricating grease cavity access on the left side of the composite hydraulic cylinder. An electromagnetic ring is arranged on a piston of the composite hydraulic cylinder, signals are transmitted to a distance sensor at the front end of the composite hydraulic cylinder through a measuring rod penetrating the electromagnetic ring, and an output interface of the distance sensor is connected with an electro-hydraulic controller controlling the three-position four-way electro-hydraulic proportional reversing valve. By arranging the lubricating grease handler, low-penetration lubricating grease is stored and heated, delivery resistance of the system is reduced, and automatic delivery of low-penetration lubricating grease is realized. Good lubricating performance of equipment is guaranteed, and labor intensity is reduced.

Description

technical field [0001] The invention relates to an automatic lubricating grease conveying system, in particular to a low-penetration lubricating grease automatic conveying system suitable for coal mine rail transport vehicles under low-speed and heavy-load working conditions, and belongs to the technical field of lubrication. Background technique [0002] Mine transport vehicles are widely used underground in coal mines to transport equipment and materials. These low-speed heavy-duty transport equipment generally use grease as the lubricating medium. Due to its non-Newtonian characteristics, grease has the characteristics of low cone penetration, high viscosity, and poor conveying capacity, which increases the difficulty of conveying grease. At present, ordinary lubricating grease is generally filled with manual grease gun or pedal mechanical grease filling machine, but this filling method is difficult to fill grease with low cone penetration, especially in low temperature ...

AI Technical Summary

Problems solved by technology

Due to its non-Newtonian characteristics, grease has the characteristics of low cone penetration, high viscosity, and poor conveying capacity, which increases the difficulty of conveying grease

At present, ordinary lubricating grease is generally filled with manual grease gun or pedal mechanical grease filling machine, but this filling method is difficult to fill grease with low cone penetration, especially in low temperature environment, which has No. 3 or above low cone-penetration grease with good lubricating performance is difficult to be transported to the lubrication point, which often causes serious shortage of equipment lubrication

On the one hand, the mechanical filling method requires regular and quantitative filling by specialized personnel, which reduces labor productivity; and can not be played

At the same time, the existing filling method cannot be quantitatively filled according to the amount of grease required by the lubrication point, resulting in either insufficient filling or excessive filling and wasteful consequences

Therefore, once the grease cannot be filled in time, it often causes serious wear and tear of the equipment.

Images