Abstract: A winch clutch includes a driving block and a driven block respective connected to a motor and a transmission shaft of a deceleration clutch mechanism of a winch, the driving block and the driven block each having two spaced protruding flanges, a brake spring mounted between the driving block and the driven block and having retaining end portions disposed at two opposite ends thereof and respectively engaged into gaps between the protruding flanges of the driving block and gaps between the protruding flanges of the driven block, a brake bush accommodating the driving block, the driven block and the brake spring, and a one-way bearing fixedly mounted in the winch around the brake bush to limit rotation of the brake bush in a first direction. Thus, the winch brake has the characteristics of high reliability and high durability.

Abstract: A system for dynamically exchanging heterogeneous databases in real-time, includes database table migration means for executing data migration by selecting a source database and a destination database, and then selecting source data table as a basis for selecting migration mode; relational table establishing means for defining a displayed relational field and exporting data module after selecting a source database and a source data table; data table export means for executing data export by selecting source database and selecting an export destination file; data table import means for executing data import by selecting a source file and selecting destination table according to said source file selection and setting table mapping field; data mapping rule means for mapping the data field via multiple operation means and an automatically encode and interpretation system after selecting source; screen data control mapping means for mapping a data file for storage and activating application program by selecting da