The fork truck hydraulic transmission gearbox of band power taking mouth
Technical field
The utility model relates to the gearing field, relates in particular to the fork truck hydraulic transmission gearbox of 4.5 tons of band power taking mouths.
Background technique
As Fig. 1, Fig. 2 and shown in Figure 3, domestic existing 4.5 ton forklift hydraulic transmission gearboxes are not with the power taking mouth, have only a built-in internal gearing oil pump.Because the fork truck hydraulic pressure installation needs motivational drive, so power can only take out from motor.Fork truck producer was not because hydraulic transmission gearbox was provided with hydraulic pressure installation power taking mouth in the past, therefore just must select the motor that has the power taking mouth for use, and the band power taking mouth that motor has, the not band power taking mouth that has, and often the fork truck producer performance wanting to select for use, the motor that price is suitable are not with the power taking mouth sometimes, influenced fork truck producer to the selecting for use of motor, also limited at present not using scope with power taking mouth 4.5 ton forklift hydraudynamic drive gear-boxes.4.5 ton forklift hydraulic transmission gearboxes of band power taking mouth both can have been selected the motor of band power taking mouth for use, also can select the motor of not being with the power taking mouth for use, had enlarged fork truck producer to selecting the scope of motor for use, made the accommodation of hydraulic transmission gearbox wider.
The model utility content
The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art, provides a kind of thick oil to filter that filtering surface is long-pending bigger, the fork truck hydraulic transmission gearbox of the band power taking mouth of being convenient to install external oil pump.
The utility model comprises differential mechanism, shift transmission, fluid torque converter, differential mechanism is connected with shift transmission, be equiped with the torque-converters housing on the shift transmission, fluid torque converter is installed in the torque-converters housing, be equiped with internal gearing oil pump on the torque-converters housing, internal gearing oil pump is provided with the first power taking mouth that is used to drive external oil pump.
Pump drive gear axle one end of described internal gearing oil pump is installed on the torque-converters housing, and the other end is installed in the first power taking mouth of internal gearing oil pump, and the torque-converters housing is provided with the second power taking mouth with pump drive gear axle concentric.
Described fluid torque converter is connected with shift transmission by turbine shaft, be arranged with guide wheel shaft on the turbine shaft, the Pump wheel shaft that links to each other with the fluid torque converter pump impeller is bearing on the guide wheel shaft by bearing, Pump wheel shaft is provided with driving gear, be equiped with idler shaft in the torque-converters housing, be equiped with idle gear on the idler shaft, idle gear meshes with driving gear and pump drive gear axle respectively.
Described guide wheel shaft links to each other by connection seat with the torque-converters housing, and connection seat is provided with first oil duct and second oil duct, and the oil duct of fluid torque converter is communicated with by first oil duct and second oil duct with the oil duct of shift transmission.
The bottom of described shift transmission is provided with inlet port, is equiped with thick oil filter on the inlet port, and thick oil filter links to each other with oil pump filler opening in the torque-converters housing by fuel sucking pipe.
The gear tooth width of described internal gearing oil pump is 20~30mm.
Compared with prior art, advantage of the present utility model is: be provided with two external oil pump power taking mouths, the hydraulic pressure installation on the fork truck just can be installed on this two power takings mouth, obtains oil pump power by the power taking mouth, greatly facilitates the arrangement of fork truck hydraulic pressure installation; By the coupling seat of band oil duct is set between guide wheel shaft and torque-converters housing, the oil duct of fluid torque converter is communicated with the oil duct of shift transmission, constituted torque-converters oil-feed and oil return oil duct; Thick oil filter mounting point changes into and is installed in shifted lower box part by being installed in shifted upper box part, has increased the filter area of thick oil filter, has reduced the resistance of thick oily strained oil; Increase the gear tooth width of internal gearing oil pump, improved the supply capability of internal gearing oil pump.
Description of drawings
Fig. 1 is the prior art constructions schematic representation;
Fig. 2 is that the B of Fig. 1 is to schematic representation;
Fig. 3 is the A-A cutaway view Amplified image of Fig. 2;
Fig. 4 is a structural representation of the present utility model;
Fig. 5 is that the C of Fig. 4 is to schematic representation;
Fig. 6 is the D-D cutaway view Amplified image of Fig. 5.
Marginal data:
1, differential mechanism 2, shift transmission
3, fluid torque converter 4, torque-converters housing
5, internal gearing oil pump 6, turbine shaft
7, guide wheel shaft 8, Pump wheel shaft
9, idler shaft 10, idle gear
11, pump drive gear axle 12, connection seat
13, thick oil filter 14, fuel sucking pipe
21, inlet port 41, the second power taking mouth
42, oil pump filler opening 51, the first power taking mouth
81, driving gear 121, first oil duct
122, second oil duct
Embodiment
As Fig. 4, Fig. 5, shown in Figure 6, a kind of fork truck hydraulic transmission gearbox with the power taking mouth, comprise differential mechanism 1, shift transmission 2, fluid torque converter 3, differential mechanism 1 is connected with shift transmission 2, be equiped with torque-converters housing 4 on the shift transmission 2, fluid torque converter 3 is installed in the torque-converters housing 4, be equiped with internal gearing oil pump 5 on the torque-converters housing 4, pump drive gear axle 11 1 ends of internal gearing oil pump 5 are installed on the torque-converters housing 4, the other end is installed on the internal gearing oil pump 5 in the set first power taking mouth 51, torque-converters housing 4 is provided with the second power taking mouth 41 with pump drive gear axle 11 concentrics, the power taking mouth is used to drive external oil pump, hydraulic pressure installation on the fork truck just can be installed on this two power takings mouth, obtains oil pump power by the power taking mouth, greatly facilitates the arrangement of fork truck hydraulic pressure installation.Fluid torque converter 3 is connected with shift transmission 2 by turbine shaft 6, be arranged with guide wheel shaft 7 on the turbine shaft 6, the Pump wheel shaft 8 that links to each other with fluid torque converter 3 pump impellers is bearing on the guide wheel shaft 7 by bearing, Pump wheel shaft 8 is provided with driving gear 81, be equiped with idler shaft 9 in the torque-converters housing 4, be equiped with idle gear 10 on the idler shaft 9, idle gear 10 meshes with driving gear 81 and pump drive gear axle 11 respectively.Fluid torque converter 3 drives set idle gear 10 on the idler shaft 9 by set driving gear 81 on the Pump wheel shaft 8, idle gear 10 again with transmission of power to pump drive gear axle 11, thereby drive internal gearing oil pump 5 and provide power for the first power taking mouth 51 and the second power taking mouth 41.Guide wheel shaft 7 links to each other by connection seat 12 with torque-converters housing 4, and connection seat 12 is provided with first oil duct 121 and second oil duct 122, and the oil duct of fluid torque converter 3 is communicated with by first oil duct 121 and second oil duct 122 with the oil duct of shift transmission 2.The bottom of shift transmission 2 is provided with inlet port 21, is equiped with thick oil filter 13 on the inlet port 21, and thick oil filter 13 links to each other with oil pump filler opening 42 in the torque-converters housing 4 by fuel sucking pipe 14, and the filter area increase of thick oil filter has reduced thick oily strained oil resistance.The gear tooth width of internal gearing oil pump 5 is 25mm, and theoretical displacement of oil pump is brought up to 25ml/r.
Working principle: engine-driving fluid torque converter 3, fluid torque converter 3 is passed to shift transmission 2 by turbine shaft 6 with a part of moment of torsion, shift transmission 2 is worked, and is connect outputting power by the semiaxis of differential gear in the differential mechanism 1 and ransaxle through gear shift, the moving differential mechanism 1 of variable velocity zone; Fluid torque converter 3 fuses with Pump wheel shaft 8, fluid torque converter 3 passes to idle gear 10 with the driving gear 81 of another part moment of torsion on Pump wheel shaft 8, idle gear 10 drives 11 work of pump drive gear axle again, pump drive gear axle 11 drives internal gearing oil pump 5 work by flat key on the one hand, internal spline by two ends connects with the external splines of external oil pump on the other hand, form two external oil pump power taking mouths, drive external oil pump work, hydraulic pressure installation on the fork truck just can be installed on this two power takings mouth, obtain oil pump power by the power taking mouth, greatly facilitate the arrangement of fork truck hydraulic pressure installation.Between torque-converters housing 4 and guide wheel shaft 7, be provided with connection seat 12, connection seat 12 is provided with first oil duct 121 and second oil duct 122, and torque-converters oil-feed oil duct in two oil ducts in the connection seat 12 and guide wheel shaft 7, the torque-converters housing 4 and torque-converters oil return oil duct are connected.