How to burn the sleeve of cone crusher? -Henan Red Star

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How to burn the sleeve of cone crusher?

stay Cone crusher In the process of using, because of various factors affecting the nylon bushing, burning sleeve often happens to hold the shaft, which seriously affects the normal production of crushing workshop. Therefore, effective measures should be taken.

 Cone crusher

Reasons for burning of cone crusher

The lack of oil or oil cut off on the upper part of the bushing will produce local high temperature, which will lead to the burning of sleeve The interference between the nylon bushing and the frame body (or the hollow eccentric shaft) is too large. After the compression deformation of the nylon bushing and the thermal expansion deformation of the nylon bushing, the clearance between the nylon bushing and the hollow eccentric shaft (or the main shaft of the body) is too small, the oil path is narrow, the heat dissipation is not good, and the oil flow is not smooth, which is also another main reason for the high temperature and burning of the sleeve; the poor oil quality or the water in the oil will affect the sleeve burning Lubrication, also easy to produce high temperature and burn sleeve.

Measures for burning sleeve of cone crusher

1. Outside the hollow shaft (or body spindle), open two inclined oil channels (5-6 mm in width and 5-6 mm in depth) in the opposite direction of rotation, or machine 3-4 6 × 6 mm lubricating oil channels outside the hollow shaft (or body spindle). When the hollow shaft (or the main shaft of the body) rotates, the lubricating oil moves along the oil passage to ensure that the lubricating oil path is unblocked, which increases the oil supply quantity of the upper part of the lubricating oil, and solves the problem of oil shortage and oil cut off at the upper part of the bushing due to the small matching clearance of the sleeve length.

2. In order to eliminate the upward movement of the bushing, cut 2-3 evenly distributed gaps of 80mmx30mm on the bushing, and process 80mm wide slot at the relative position of the frame body, and tap the threaded hole. Fix the 100mmx80mmx20mm iron plate on the frame body with M24 bolts, and press the nylon sleeve with iron plate to avoid axial and radial relative displacement of bushing and relative movement between bushing and eccentric shaft, Loose bushing problem.

3. In order to eliminate the blockage of the lubricating oil path and increase the oil flow resistance, avoid the lack of oil or oil cut off at the upper part of the bushing, and improve the lubrication, 3 ~ 4 12mmX12mm notches can be cut on the bushing at the same time to ensure the smooth oil path.

4. In order to ensure the matching accuracy of the bushing and the shaft, according to the actual size of the hole in the frame, reduce the actual dimension of the bushing and adopt the lower deviation as far as possible, so as to form a transition fit between the bushing and the frame body, so as to avoid reducing the fit clearance between the shaft and the sleeve due to the serious thermal expansion deformation of the bushing caused by excessive interference.

After the above several improvement measures, Crusher operation Good, the service life of nylon sleeve is long, the occurrence of burning sleeve can be basically avoided, and the economic benefit is considerable.

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