4 results about "Stroke ratio" patented technology

The application relates to the technical field of generator testing, in particular to a dynamic-magnetic linear generator mutual-load pneumatic coupling test method, which obtains performance parameters of a to-be-tested motor through a pneumatic coupling mode, omits an intermediate transmission mechanism, and can jointly adjust a test frequency through inflation pressure and a variable-frequency driver, can adjust the oscillation stroke ratio of two motor movers through the area ratio of coupling pistons, can truly simulate the working condition of a linear motor in a free-piston Stirling generator, and can obtain more sufficient test data; in addition, the two linear motors are arranged to form a symmetrical structure test platform, and through transformation of a driving motor and the to-be-tested motor, the test data can be compared, so that the consistency of a prototype development and production can be verified.

The application discloses a double-stroke driving chuck and relates to the technical field of driving chucks.The double-stroke driving chuck comprises a chuck body, a large disc arranged on the chuck body, a panel placed on the front side of the large disc, four air cylinders fixedly installed on the large disc, a lower rack and two guide rails fixedly installed on the upper portion of the air cylinders, the two guide rails being arranged in parallel and the lower rack being located between the two guide rails, a sliding seat placed on the upper portion of the air cylinder, an upper rack and two sliding blocks fixedly installed on the lower portion of the sliding seat, and the upper rack being located between the two sliding blocks.The principle of the gear and rack'speed multiplication mechanism' is used to make the stroke ratio of the air cylinder piston rod and the roller be 1:2, so that the double-stroke effect is achieved.The design makes the chuck have a larger clamping range for workpieces, the long air cylinder does not need to be installed on the chuck, the outer diameter of the chuck does not need to be increased, therefore, the rotational inertia of the chuck is not increased, and the rotational speed of the chuck is not affected while the clamping stroke of the workpiece is increased.

The utility model discloses a novel viscous damper belongs to damper technical field. A novel viscous damper, including Y type ring and with Y type ring's stop plate, be equipped with elastic cavity between stop plate and Y type ring, make Y type ring have certain elasticity, when Y type ring, stop plate receive the pressure of silicon oil, can slide and buffer, the utility model discloses adopt the piston of high wear -resisting high elasticity POM material to make, through the excess interference design of cylinder body replacement traditional rubber O type sealing ring, realize the direct sealing between piston and cylinder body, the utility model discloses adopt novel sealing surface cover replacement traditional spring compensation structure, through the elastic deformation of sealing surface cover direct compensation the space of Y type ring displacement generation, effectively eliminated the invalid compression stroke of traditional spring compensation structure, make the effective working stroke ratio of damper higher, and the response speed is faster.

The utility model discloses a belt wheel transmission multi-section sliding door one-way linkage door opening and closing device which comprises a plurality of sliding doors, a connecting support, a driving assembly, belt wheel transmission pieces and a belt pressing plate, the number of the sliding doors is multiple, and the number of the belt wheel transmission pieces is equal to the number of the sliding doors. Each belt wheel transmission part comprises a driving belt wheel, a driven belt wheel and a belt arranged on the driving belt wheel and the driven belt wheel in a sleeving mode, the multiple driving belt wheels are located on the driving assembly and coaxially arranged, the belt pressing plate is located on the belt, and the sliding door is connected with the belt pressing plate through the connecting support. The multiple sets of belt wheel transmission parts are controlled through one set of driving assembly, and the tooth number ratio of the multiple driving belt wheels is set according to the stroke ratio of the multiple sliding doors, so that synchronous opening and closing of the multiple sliding doors are achieved, and meanwhile the installation space is saved.