Threaded rod compressor broken main shaft burying shaft repairing method

Abstract

The invention relates to a threaded rod compressor broken main shaft burying shaft repairing method. The method comprises the steps that one section of a broken main shaft is clamped and positioned bythe P end of a positioning tool, then a connecting shaft and the positioning tool are clamped and positioned to push the Q end, so that the matching of the connecting shaft and the broken main shaftinstalled and clamped at the P end is completed; and the broken shaft and the connecting shaft joint surface are connected together by spot welding, namely, spot welding is carried out at a first spotwelding position, and when spot welding at the first spot welding position is completed, after the spot welding position is cooled to room temperature, the positioning tool at the Q end is loosened,after a positioning table Q end is pushed to an appropriate position, the other section of the broken main shaft is clamped and positioned, and then the positioning table Q end is pushed and forms assembly with the connecting shaft in a matched mode. The threaded rod compressor broken main shaft burying shaft repairing method has the beneficial effects that the reuse of the broken main shaft is realized, the loss of discarded main shafts is reduced, the costs of enterprises are saved, the repairing method is easy, the operation is convenient, the method can be completed by general mechanical processing enterprises, and the repairing cost is low.

Description

technical field [0001] The invention belongs to the field of repairing mechanical main shafts, and in particular relates to a method for repairing buried shafts of fractured main shafts of screw compressors. Background technique [0002] Bearings are installed on the bearings of the compressor shaft, and are connected to the housing base through the bearings; at the same time, the compressor shaft is connected to the motor through a coupling and rotates under the drive of the motor, because the compressor shaft only relies on the bearings at both ends As a support, after long-term work, the inner ring of the bearing and the surface of the bearing installation position of the main shaft are worn (because the hardness of the inner ring of the bearing is harder than the surface of the bearing installation position of the compressor main shaft, so the surface of the bearing installation position is usually worn), when the bearing After the surface of the installation position is...

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Problems solved by technology

[0002] Bearings are installed on the bearings of the compressor shaft, and are connected to the housing base through the bearings; at the same time, the compressor shaft is connected to the motor through a coupling and rotates under the drive of the motor, because the compressor shaft only relies on the bearings at both ends As a support, after long-term work, the inner ring of the bearing and the surface of the bearing installation position of the main shaft are worn (because the hardness of the inner ring of the bearing is harder than the surface of the bearing installation position of the compressor main shaft, so the surface of the bearing installation position is usually worn), when the bearing After the surface of the installation position is worn, there will be a gap between the main shaft and the inner ring of the bearing. When the main shaft rotates, it will cause radial runout of the main shaft, resulting in vibration and noise, which not only increases energy consumption, but also accelerates the wear of the equipment and reduces the equipment cost The service life is long, and it is easy to cause damage to the entire equipment in severe cases;

[0003] Due to factors such as long-term high-load operation, vibration, and fatigue of the main shaft of large air compressors, it is easy to cause the main shaft to break. Once the main shaft of the air compressor breaks, many manufacturers adopt the method of replacing the main shaft to restore production. The original factory of machine equipment manufactures to re-customize the compressor spindle. On the one hand, the price is expensive, which greatly increases the operating cost of the enterprise; Time wasting; therefore, after the main shaft of a large air compressor breaks, there is an urgent market demand for quick repair and help enterprises resume production and operation in time

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