Excavator travel motor and pipeline seal protection method
Due to the large water content of the ore, when the excavator is working in the cabin of the ore transport ship, the ore slurry is often squeezed from the edge of the travel motor protection box guard and the through hole of the travel motor hose. When the extruded ore slurry is dried and solidified together with the traveling motor and its hose, it will cause corrosion to the traveling motor and the hose. The corroded hose is prone to cracking and hydraulic oil leakage under the pressure of the hydraulic system. At the same time, a large amount of ore mud solidified and agglomerated at the site, which caused great difficulty in disassembling and replacing the hose.
In order to prevent the corrosion of the travel motor and hose, reduce the damage probability of the hose at the travel motor, reduce the waste of hydraulic oil, and improve the maintenance efficiency, we decided to block the travel motor shield and the hose through hole to prevent the ore slurry from entering the travel motor. Protect the box to protect the travel motor and hose. The specific plan is as follows:
First, the guard plate on the travel motor protection box is removed, and the guard plate shape is used as a template, and the guard plate retaining ring is cut with an 8 mm thick steel plate. Secondly, the retaining ring is welded to the edge of the outer frame of the traveling motor protection box, and after the welding slag is cleaned, the welding seam is polished with a sanding machine to make the welding seam smooth and smooth. Again, using the inner tube of the used automobile tire, two layers of the gasket are formed in accordance with the contour of the retaining ring, and the gasket is adhered to the retaining ring. Then, a foaming sealant is applied to the through hole of the traveling motor hose to completely seal the gap around the through hole and the gap around the through hole. Finally, clean the inside of the travel motor protection box, paint the exposed metal parts, and then install the travel motor protection box baffle.
The retaining ring and the gasket can well block the gap between the edges of the travel motor protection box guard. Since the hose will contract and vibrate when the pressure changes, it is not suitable to adopt a rigid seal. The styrofoam has a certain elasticity, and it can be used to block the hose without damaging the hose. The styrofoam enters the gap around the hose, which can play a good sealing function and provide convenience for maintenance work. Even if the hose is aged and needs to be replaced, it is easy to remove the styrofoam.
The above method prevents the ore slurry from entering the traveling motor protection box, and can prevent the damage of the ore slurry to the traveling motor and the oil pipe joint, and achieves obvious effects.