Quarry Stone Crushers Small Scale Mining

Abstract

Factors Affecting The Service Life Of Small Scale Quarry Stone Crushers Eccentric Sleeve 1. Coordination There are three kinds of cooperation with the eccentric sleeve, that is, the cooperation between the outer cylindrical surfa…
  • Quarry Stone Crushers Small Scale Mining
  • Quarry Stone Crushers Small Scale Mining
  • Quarry Stone Crushers Small Scale Mining

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Factors Affecting The Service Life Of Small Scale Quarry Stone Crushers Eccentric Sleeve

1. Coordination

There are three kinds of cooperation with the eccentric sleeve, that is, the cooperation between the outer cylindrical surface of the eccentric sleeve and the sleeve of the base, the cooperation between the inner surface of the eccentric sleeve and the lower shaft of the moving cone, the upper shaft of the moving cone and the sleeve of the tapered sleeve The fit between the inner surfaces. The cooperation situation has an important influence on the service life of the eccentric sleeve.
1. The cooperation between the outer cylindrical surface of the eccentric sleeve and the steel sleeve of the machine base. A clearance fit is used between the outer cylindrical surface of the eccentric sleeve and the sleeve of the base. Usually, the tolerance band of the outer cylindrical surface of the eccentric sleeve is d4. If the fit is too tight, the eccentric sleeve is easily stretched during operation of the Small Scale Quarry Stone Crushers. On the contrary, if the fit is too loose, an impact load is easily generated during the operation of the Small Scale Quarry Stone Crushers.
2. The fit between the inner surface of the eccentric sleeve and the lower shaft of the moving cone. In order to enable the Small Scale Quarry Stone Crushers to operate normally, a clearance fit is used between the inner surface of the eccentric sleeve and the lower shaft of the moving cone. Usually, the tolerance band of the inner cylindrical surface of the eccentric sleeve is D4. If the fit is too tight, the Small Scale Quarry Stone Crushers will not function properly. On the contrary, if the fit is too loose, the impact load is easily generated during the operation of the Small Scale Quarry Stone Crushers.
3. The cooperation between the main shaft of the moving cone and the inner surface of the tapered sleeve copper sleeve. The inner surface of the tapered sleeve is cylindrical and cooperates with the main shaft of the moving cone. The outer surface of the tapered sleeve is conical and cooperates with the steel sleeve of the beam. When the Small Scale Quarry Stone Crushers is running, when the main axis of the moving cone is offset in a certain direction, the main shaft of the moving cone pushes the taper sleeve to offset in the opposite direction of the downward direction of the lower end of the moving cone. . If the fit between the main shaft on the moving cone and the inner surface of the tapered sleeve is too loose, the eccentric sleeve will generate additional load.

2. Uniformity Of Installation Clearance Between The Base And The Lower Frame, The Lower Frame And The Upper Frame

The eccentric sleeve is mounted on the base, and the upper end of the moving cone is mounted on the upper frame body, and the base, the lower frame and the upper frame are connected by pins. If the gap between the base and the lower frame, and the gap between the lower frame and the upper frame are not uniform, the offset of the tapered sleeve during operation will be inconsistent, and the eccentric sleeve will generate additional load.

3, Lubricating Oil

In actual production, due to the failure of the seal, the dust enters the oil pool from the bottom of the moving cone, causing the lubricating oil to be contaminated. Impurities wear as the oil flows onto the eccentric sleeve, causing wear on the eccentric sleeve.

4, Casting Quality Of Eccentric Bus Alloy

The casting quality of the eccentric bus alloy has a certain influence on the service life of the eccentric sleeve. In order to prevent the bus alloy from falling off abnormally, the “dove tail groove” and “hole” (as shown in the figure) are usually designed on the eccentric sleeve to integrate the bus alloy inside and outside the eccentric sleeve and inside the eccentric sleeve. In the casting process, if the bus alloy cannot be integrated, the bonding force of the bus alloy is weakened, causing the bus alloy to fall off when subjected to an excessive impact load.

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