BD05N1
Product Description
Transmission system
Description of transmission
The BD05 transmission is a fixed shaft, constant mesh and power gearshift transmission, which is mainly used for LG918 and LG920 loaders. The ZL15 series transmission is mainly used for the LG916D loader. In the transmission system of LG916D, LG918 or LG920 loader, the engine is directly connected to the torque converter via the spring plate so as to realize output power. The torque converter is connected via the propeller shaft to the front input flange of transmission which changes speed, increases torque and then transmit power to front and rear drive axles via front and rear propeller shafts respectively.
The BD05 transmission mainly consists of input shaft assembly, forward low-gear clutch shaft assembly, reverse high-gear clutch shaft assembly, countershaft assembly and output shaft assembly.
Fig. 2-1 | 1. Breather 2. Input shaft assembly 3. Transmission mounting bracket 4. Reverse high-gear clutch shaft assembly 5. Forward low-gear clutch shaft assembly 6. Oil suction port 7. Transmission control valve 8. Parking brake 9 Countershaft assembly 10. Oil inspection plug 11. Output shaft assembly |
Basic parameters of transmission & torque converter
| Item | Parameters/description | |
| Torque converter | Type | Single-stage three-element single-turbine torque converter |
Oil pressure at torque converter inlet (MPa) | 0.4~0.6 | |
Oil pressure at torque converter outlet (MPa) | 0.15~0.325 | |
| Transmission | Type | Fixed-shaft power gearshift |
Gears | Forward II, reverse II | |
| Transmission working pressure (MPa) | 1.2~ 1.5 | |
Structure and principle of transmission
Structure of transmission
Fig. 2-2 Schematic diagram of transmission structure
Gearshift principle of transmission
The transmission adopts mechanical gearshift. The gearshift mechanism of BD05 transmission is shown in Fig. 2-3. This gearshift mechanism includes two gearshift levers: 1. Direction control lever; 2. High/low speed control lever. They are connected to the transmission control valve stem of the transmission respectively via the flexible shaft, so the working of clutch of each gear is realized by controlling the transmission valve. The working condition of each clutch is shown in Fig. 2-4.
Fig. 2-3 Gear selector | Fig. 2-4 Working condition of clutch for each gear |
Transmission line of each gear
Transmission line of forward I Fig. 2-5 Z1→Z2→Z4→Z6→Z7→Z8→Z9→Z10→Z11 | Transmission line of forward II Fig. 2-6 Z1→Z2→Z4→Z5→Z7→Z8→Z9→Z10→Z11 |