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Workover rig mainly consists of diesel engine power unit which is made up of diesel engine and hydraulic transmission box, electric powerunit which is made up ofrequency conversion motor and mechanical transmission box, transfer case, angle gear box, drawworks, mast assembly, hydraulic and pneumatic system, voltage transformer, power connection box, MCC control cabinet,frequency conversion cabinet,electric air compressor, electrichydraulic pump station etc. The power of diesel engine is used for the heayy load workoverjob of workoverrig,such as running and jam release etc. The power ofrequency conversion motor is used for the noral trip-up and down operation.
