There is no obvious plastic deformation in the split part of the coupler

The cause analysis of the rupture of the fittings spoon tube sleeve is the speed regulating hydraulic coupler of the R17KI-E coupling speed regulation principle produced. In the auxiliary oil chamber of the coupler, there are nearly 10 ruptures of the spoon sleeve, which has become a hidden danger affecting the safe and stable operation of No. 1 machine. Through two serious examination and analysis and measures, the accident has been solved. From the macroscopic observation of the ruptures of the spoon pipe sleeve, the cracks are all concentrated in the bottom of the spoon sleeve and the direct tube, a auxiliary oil cavity, a spoonful tube, a moving wheel, and the intersecting place.

There is no obvious plastic deformation in the fracture area, but a connecting screw. A driving wheel has a large number of scour holes, and the scour pit has been penetrated through the pipe wall. The auxiliary oil chamber and spoon pipe are schematic until all the bottom covers are torn off and the edges of the cracks are uneven. The spoon pipe sleeve and the spoon pipe, the spoon pipe sleeve is fixed in the auxiliary oil cavity, the spoon pipe is controlled by the control mechanism, and is moved in the radial shift fracture zone in the spoon sleeve. The hydraulic coupling during normal operation, the auxiliary oil cavity in the oil has a certain speed, the corresponding dynamic pressure under the action of the oil pipe from the auxiliary oil cavity in the.

The causes and solutions of the rupture of the spoon pipe sleeve of the hydraulic coupler are analyzed.