2results about How to "High torque transmission" patented technology

The utility model relates to a special tool for a track electricity testing pile. The special tool for the electricity testing pile comprises a base, a first rotating rod, a second rotating rod, a first bevel gear, a second bevel gear and a fixed seat, a first bevel gear is arranged at one end of the first rotating rod; a second bevel gear is arranged at one end of the second rotating rod; the first bevel gear is meshed with the second bevel gear; the first bevel gear is installed in the longitudinal direction of the base, and the second bevel gear is installed in the transverse direction of the base. The first rotating rod is connected with the base through a fixing seat; the first rotating rod is externally connected with an electric tool; the first rotating rod is mounted in the longitudinal direction of the base; and the second rotating rod is mounted in the transverse direction of the base. The fixing device has the advantages that the occupied space is small, the electricity testing pile can be rapidly fixed to the rail according to the using scene of the electricity testing pile, the fixing effect is definite, the fixing device can be widely applied to rail operation, and the wide application prospect is achieved.

This invention belongs to the field of downhole workover tool technology, specifically relating to a safety connector. The safety connector includes a lower connector for connecting to a workover tool and an upper connector for connecting to a workover string. The upper and lower connectors have an overlapping section in the axial direction. The upper connector is inserted into the top of the lower connector and locked by a locking structure provided between the upper and lower connectors. The locking structure includes a pressure-pressurizing sleeve to unlock when a pressure-pressurizing ball is inserted into the safety connector and strikes the pressure-pressurizing sleeve downwards. When the upper connector is moved upwards by the workover string, a flushing space is formed in the overlapping section. The upper part of the lower connector is provided with an anti-detachment structure to prevent the upper connector from detaching from the lower connector. Workover fluid is pumped into the flushing space through the annular space between the casing and the upper connector to flush solid debris on the workover tool.