1300391, OPR, HYSTER, Hyster2, SRM

//-->.pos {position:absolute; z-index: 0; left: 0px; top: 0px;}INTRODUCTIONGENERALThis section has two parts. The first part describes themechanical components of the transmission. Thesecond part describes the hydraulic operation of thetransmission.MECHANICAL DESCRIPTIONThe parts of the transmission are installed in the fronthousing, the main housing and the rear housing. Thetorque converter housing is installed to the fronthousing. The drive gears for the hydraulic pumps areinside of the front housing. The hydraulic pumps for thelift truck are installed on a pump drive housing. Theclutches are inside of the main housing.64578910123121441.2.3.4.5.INPUT YOKETORQUE CONVERTEROIL PUMPFORWARD CLUTCHREVERSE CLUTCH6.7.8.9.10.CONTROL VALVESECOND SPEED CLUTCHFIRST SPEED CLUTCHTHIRD SPEED CLUTCHOUTPUT YOKEFIGURE 1. TRANSMISSION1TORQUE CONVERTERDescription (See FIGURE 2.)converter works as a fluid clutch and multiplies thetorque from the engine as needed. The torque converterhas three main parts: an impeller, a turbine and a stator.The impeller cover is connected to the engine flywheelby a drive shaft. The impeller is connected to theimpeller cover. When the engine and impeller rotate, agear on the hub of the impeller turns the drive gears forthe hydraulic pumps. There is one pump for thetransmission and two pumps for the hydraulic system ofthe lift truck.The turbine is installed in the torque converter betweenthe cover and the impeller. The input shaft for thetransmission fits in the splines of the turbine. The inputshaft rotates when the turbine rotates.The stator is installed in the torque converter betweenthe turbine and the impeller. The stator fits on the splinesof the stator tube and does not move. The stator tube isfastened to the torque converter housing.Operation (See FIGURE 3.)587123461.2.3.4.INPUT YOKECOVERIMPELLER COVERTURBINE5.67.8.12144STATORIMPELLERINPUT SHAFTSTATOR TUBEFIGURE 2. TORQUE CONVERTERThe torque converter is installed between the engine andthe transmission and has two functions. The torque21The oil pump for the transmission sends oil to the oilfilter, the control valve and the solenoids, the torqueconverter and the lubrication circuit. Oil for the torqueconverter flows between the stator tube and the inputshaft. The centrifugal force of the moving impellercauses the oil to flow from the inner edge to the outeredge of the impeller. This oil then flows toward the outerblades of the turbine and returns to the inner blades ofthe turbine. The oil then leaves the turbine and enters thestator going in the opposite direction of engine rotation.The blades of the stator change the direction of the oil sothat oil leaves the stator going in the direction of enginerotation. This oil enters the impeller and helps theimpeller increase the output torque from the torqueconverter.394181. TURBINE2. STATOR3. IMPELLERFIGURE 3. TORQUE CONVERTER OPERATION2CLUTCH ASSEMBLIESFORWARD (See FIGURE 4. and FIGURE 5.)The forward clutch is a rotating unit that has five frictiondiscs and four separator plates. The separator plates areengaged with the clutch carrier. The friction discs areengaged with the ring gear. A diaphragm spring is usedas the return spring for the clutch piston. The piston hastwo check balls that let the oil out of the housing after theclutch is disengaged. If the oil is not released,centrifugal force caused by the rotating housing canengage the clutch.47and ring gear are locked to the clutch housing. Theclutch housing, sun gear, planetary carrier, ring gear andthe forward pinions rotate as a unit. The movement ofthe forward pinions causes the reverse planetary carrierto rotate in the same direction as the input shaft. Therotation of the reverse sun gear causes the reversepinions to rotate opposite to the sun gear. The reversepinions, in turn, cause the output ring gear and outputshaft to rotate in the same direction as the input shaft.351489101282711INPUT SHAFTFORWARD CLUTCH HOUSINGFORWARD CLUTCHRING GEARFORWARD PLANETARY CARRIERFORWARD PINIONSUN GEARREVERSE PLANETARY CARRIERREVERSE PINIONREVERSE SUN GEAROUTPUT RING GEAROUTPUT SHAFT61214531.2.3.4.5.6.7.8.9.10.11.12.FIGURE 5. FORWARD CLUTCH OPERATION51.2.3.4.5.6.7.8.61212144REVERSE (See FIGURE 4. and FIGURE 6.)The reverse clutch has five friction discs and fourseparator plates. The separator plates are engaged withthe clutch carrier that is a stationary unit in thetransmission housing. The friction discs are engagedwith the ring gear. A set of coil springs are used as thereturn springs for the clutch piston.When the reverse clutch is engaged, the forwardplanetary carrier and the ring gear are locked to thetransmission housing. The input shaft and forward sungear cause the forward pinions to rotate on their shafts.The forward pinions cause the reverse planetary carrier3FORWARD CLUTCHREVERSE CLUTCHINPUT SHAFTFORWARD CLUTCH HOUSINGFORWARD CLUTCH PISTONFORWARD PISTON RETURN SPRINGFORWARD SUN GEARREVERSE SUN GEARFIGURE 4. DIRECTION CLUTCH ASSEMBLIESDuring operation of the transmission, the forward clutchhousing always rotates with the input shaft. When theforward clutch is engaged, the forward planetary carrierto rotate in the opposite direction as the input shaft. Themovement of the reverse planetary carrier causes thereverse pinions to walk around the reverse sun gear. Thereverse pinions cause the output ring gear and outputshaft to rotate in the direction opposite to the input shaft.106719456578921214585431. INPUT SHAFT2.FORWARD PLANETARY CARRIER3.FORWARD SUN GEAR4. FORWARD PINION5. REVERSE PLANETARY CARRIER6. REVERSE PINION7. REVERSE SUN GEAR8. OUTPUT RING SHAFT9. OUTPUT SHAFT10. REVERSE CLUTCH1214411.2.3.4.5.6.7.8.9.FIGURE 6. REVERSE CLUTCH OPERATIONFIRST SPEED (See FIGURE 7. and FIGURE 8.)The first speed clutch has five friction discs and fourseparator plates. The separator plates are engaged withthe clutch carrier that is a stationary unit in thetransmission housing. The friction discs are engagedwith the ring gear. A set of coil springs are used as thereturn springs for the clutch piston.In first gear, the ring gear (first and third speed) is lockedto the transmission housing. Since the ring gear cannotmove, the pinions that are driven by the sun gear mustwalk inside the ring gear. The movement of the pinionsmakes the output shaft rotate with the input shaft at aratio of approximately 5 to 1.32SECOND SPEED CLUTCHFIRST SPEED CLUTCHTHIRD SPEED CLUTCHSECOND SPEED CLUTCH PISTONPISTON RETURN SPRINGFIRST SPEED CLUTCH PISTONTHIRD SPEED CLUTCH PISTONOUTPUT SHAFTOUTPUT YOKEFIGURE 7. RANGE CLUTCH ASSEMBLIES426145released, centrifugal force caused by the rotatinghousing can engage the clutch.14956783121481.2.3.4.5.6.3FIRST SPEED CLUTCHRING GEAR FOR FIRST AND THIRD GEARSUN GEARPINIONOUTPUT SHAFTINPUT SHAFT312148FIGURE 8. FIRST SPEED CLUTCH OPERATIONSECOND SPEED(See FIGURE 7. and FIGURE 9.)The second speed clutch has three friction discs and twoseparator plates. The separator plates are engaged withthe clutch carrier that is a stationary unit in thetransmission housing. The friction discs are engagedwith the ring gear. A set of coil springs are used as thereturn springs for the clutch piston.When second speed is engaged, the clutch locks the ringgear for second speed to the transmission housing. Therotation of the sun gear makes the second speed pinionswalk inside the ring gear. The second speed planetarycarrier and the ring gear (first and third speed) mustrotate with the second speed pinions. The pinions (firstand third speed) are driven by the sun gear and walkinside the ring gear. These pinions cause the output shaftto rotate in the direction of the input shaft at a ratio ofapproximately 2.3 to 1.THIRD SPEED(See FIGURE 7. and FIGURE 10.)The third speed clutch is a rotating unit that has fivefriction discs and four separator plates. The separatorplates are engaged with the clutch carrier. The frictiondiscs are engaged with the ring gear. Four coil springsare used as the return spring for the clutch piston. Thepiston has two check balls that let the oil out of thehousing after the clutch is disengaged. If the oil is not1.2.3.4.5.6.7.8.9.3SECOND SPEED CLUTCHRING GEAR FOR SECOND SPEEDSUN GEARSECOND SPEED PINIONSECOND SPEED PLANETARY CARRIERRING GEAR FOR FIRST AND THIRD SPEEDPINIONOUTPUT SHAFTINPUT SHAFT2FIGURE 9. SECOND SPEED CLUTCHOPERATION66213754121481.2.3.4.5.6.7.4THIRD SPEED CLUTCHRING GEAR FOR FIRST AND THIRD SPEEDTHIRD GEAR HOUSINGSUN GEARINPUT SHAFTPINIONOUTPUT SHAFTFIGURE 10. THIRD SPEED CLUTCHOPERATIONIn third speed, the ring gear (first and third speed) islocked to the housing for third speed. Both sets of5

zanotowane.pl

doc.pisz.pl

pdf.pisz.pl

hannaeva.xlx.pl