7 results about "Scotch yoke" patented technology

A motion duck decoy, in which a duck decoy comprises a weight and a power source enclosed within the duck decoy, whereby powered motion of the weight within the duck decoy causes the duck decoy to mimic the feeding motion of a duck. The decoy may include a Scotch yoke mechanism.

The utility model belongs to the technical field of agricultural equipment, disclose a kind of pickup device without retainer, including rotating shaft, the fixed disc is fixedly installed in the position of both ends of rotating shaft, rotating shaft outer surface between two fixed discs is evenly spaced and arranged with multiple support plates, multiple support plates are set to pentagon, multiple installation poles of annular arrangement are inserted between two fixed discs, multiple installation poles are contacted with support plate simultaneously, multiple groups of pickup components are linearly arrayed on each installation pole, and multiple installation poles are connected by external guard plate;The utility model whole simple structure can strengthen the overall strength of pickup device, convenient to disassemble and assemble, improve use effect.

The present invention provides a foldable electronic device comprising a central base, panel assemblies, and a scotch yoke synchronization module. The central base includes a base portion and a plate portion. Each panel assembly has a wing member pivoted to the base portion. The scotch yoke synchronization module includes a guide column, a liftable block, crank members, sliding yokes, and sliding pins. The guide column is on the plate portion, and the liftable block moves along it. Each crank member is pivoted to the base portion, with sliding yokes on the liftable block extending widthwise. Sliding pins on the crank members are accommodated in the sliding yokes for back-and-forth movement. When the liftable block moves along the guide column, the sliding pins slide in the yokes, causing the crank members to rotate in opposite directions simultaneously.

This application belongs to the field of internal combustion engine technology, and particularly relates to a Scottish yoke internal combustion engine, vehicles, ships, and aircraft. The Scottish yoke internal combustion engine includes: a crankshaft with at least one connecting rod journal; a connecting rod with a crankshaft connection portion having a sliding groove; a slider slidably disposed within the sliding groove; a first rolling bearing installed in a mounting hole of the slider, the connecting rod journal and the slider being rotatably connected via the first rolling bearing; and two second rolling bearings respectively installed on both sides of the slider along its sliding direction within the sliding groove, the slider being slidably mounted within the sliding groove via the two second rolling bearings. The technical solution of this application aims to solve the problem of dry friction wear between the bearing bush and connecting rod journal, and between the slider and connecting rod in a Scottish yoke internal combustion engine without forced lubrication.

The invention discloses a simple harmonic variable rotating speed generation mechanism which mainly comprises a main motor, an auxiliary motor, a planetary gear train and a Scotch yoke conversion mechanism. The main motor drives the sun gear; the auxiliary motor drives a crank disc with a radial guide rail, and the crank disc and the rack push rod form a Scotch yoke mechanism together through an adjusting rod assembly composed of a sliding block and a threaded rod, so that the rack push rod generates simple harmonic reciprocating rectilinear motion. The motion is converted into simple harmonic rotation of the internal and external tooth gear through the intermediate gear, then differential coupling is carried out on the simple harmonic rotation and the rotation speed of the sun gear in the planetary gear train, and finally the planetary gear output shaft outputs the simple harmonic changing rotation speed. The rotating speed fluctuation amplitude can be flexibly controlled by changing the eccentric distance of the adjusting rod assembly in the guide rail. The mechanism realizes dual-power synthesis in a pure mechanical mode, has the advantages of accurate waveform, convenience in adjustment, compact structure and the like, and is suitable for unsteady-state working condition simulation of rotating machinery.

The invention discloses a multi-station wind power variable pitch bearing fretting wear test device, which relates to the technical field of bearing tribology test and wind power equipment reliability test, and comprises a rack, a driving unit, at least two test units and at least two loading units, the driving unit is installed on the rack and used for providing reciprocating swing driving force, and the driving unit comprises a servo driving motor and at least one Scotch yoke mechanism; the test unit is connected with the output end of the Scotch yoke mechanism and is used for installing a test bearing and simulating the working state of the test bearing; the loading units are in butt joint with the testing units respectively and are used for applying axial loads to the testing units; the driving unit synchronously drives all the Scotch yoke mechanisms through a servo driving motor, and the output end of each Scotch yoke mechanism is connected with and drives at least one testing unit so that the testing bearings in all the testing units can synchronously swing in a reciprocating mode. By means of the arrangement, synchronous driving of the multiple test stations is achieved.

Device (100) for a hand-operated therapeutic jaw exercise, comprising: a lower mandibular arch plate (102) configured to apply force to the incisors of a mandibular arch; a quadrant plate (104) which supports the lower mandibular arch plate (102) for rotation about a pin (106) which is mounted on a stand of the quadrant plate (108); a rod (110) connecting the lower mandibular arch plate (102) to the quadrant plate (104); a yoke (112) that engages with the bar (110) to form a Scotch yoke mechanism; a rack (114) which extends integrally from the yoke (112) and is provided with teeth; a pinion (116) that engages with the rack (114) to form a rack and pinion mechanism; and a pinion (116) wherein the pinion (116) engages with the rack (114) to form a rack mechanism; a hand lever (118) extending from a central shaft of the pinion (116) and supported by a hand lever stand (120), wherein a rotation of the hand lever (118) actuates the pinion (116) to move the rack (114) back and forth, the yoke (112) slides and the quadrant plate (104) is rotated around the pin (106), thereby opening the lower mandibular arch plate (102) in a circular arc and enabling locking in any angular position for therapeutic jaw exercises.