Off-centering type tamping pickaxe with self-lubricating function

Abstract

The invention discloses an eccentric type tamping pickax with self-lubrication function, belonging to mechanical field of railway maintenance, which is characterized in that: a central hole and a lateral aperture are processed on an eccentric shaft which is provided with an oil suction nozzle at the lower end; an oil seal arranged at the upper end of the rod shell enables the rod shell form a confined space; a partial pressure gland bush is arranged in a hole at the lower end of the rod shell; the bearing and the partial pressure gland bush enable the confined space to form an upper and a lower parts with lubrication oil arranged at the lower part. When the momentum of a gasoline engine passes through a clutch and a flexible shaft drives an eccentric shaft to rotate to produce vibration, the eccentric part of the eccentric shaft drives the air flow at high speed, thereby enabling the pressure at the upper part of the confined space smaller than the pressure at the lower part; under the action of pressure difference, the lubricating oil flows to the upper part of the bearing through the central hole and the lateral aperture and flows back to the lower end through the bearing under the gravity action, thereby forming a circulation; on one hand, the flowing of the lubrication oil lubricates the bearing and takes away the hot energy produced by high-speed rotation of the bearing on the other hand, thereby prolonging service life of the bearing.

Description

1. Technical field [0001] The invention belongs to the field of railway maintenance machinery. 2. Background technology [0002] A "internal combustion direct-acting tamping machine" provided by Chinese patent application number "01261646" is powered by a gasoline engine, and the eccentric shaft is driven by a flexible shaft to rotate to generate vibration. The bearing speed of the eccentric shaft is as high as 7000 rpm. The tamping heat dissipation conditions in the ballast are poor, and there is no effective lubrication, so the bearing is very easy to heat and damage, which affects the normal use of the machine. 3. Contents of the invention [0003] The purpose of the present invention is to design a tamping pick with self-lubricating function, improve the lubrication conditions and heat dissipation conditions of the bearing, improve the service life of the bearing, and meet the requirements of harsh working conditions. [0004] The technical solution adopted by the pre...

AI Technical Summary

Problems solved by technology

[0002] A "internal combustion direct-acting tamping machine" provided by Chinese patent application number "01261646" is powered by a gasoline engine, and the eccentric shaft is driven by a flexible shaft to rotate to generate vibration. The bearing speed of the eccentric shaft is as high as 7000 rpm. The tamping heat dissipation conditions in the ballast are poor, and there is no effective lubrication, so the bearing is easily damaged by heat, which affects the normal use of the machine

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