Typical structure of crankshaft connecting rod radial piston motor

Typical structure of crankshaft connecting rod radial piston motor

a. Ihlobo elisodwa lokusebenza kwe-crankshaft elihlanganisa uhlobo lwe-rod ye-quantitative radial piston motor liboniswa ku-Fig. y. imoto ithatha ukusabalalisa kwe-shaft flow. I-housing enesimo se-star 4 yemoto inendawo eyindilinga ehlelwe ngokuqondile, futhi ukuphela kwendawo kuvalwe yi-cylinder head 7. I-plunger 6 isebenza ku-crankshaft (ehlanganiswe ne-eccentric) 3 nge-connecting rod 5. I-crankshaft ibekwe kuma-rolling bearings 2 no-10 futhi iqhuba i-valve distribution shaft 12 ukuba ijike nge-cross coupling 8. I-port shaft ifakwe ku-current collector 9 futhi ixhaswe yi-needle roller bearing 11. I-ball joint ye-connecting rod 5 kanye ne-surface ye-bearing ye-connecting rod ethintana ne-crankshaft ikhuluma ngendlela ye-hydrostatic bearing, futhi uwoyela ophakeme ungene kwi-hydrostatic bearing nge-small hole ye-piston cylinder. Le structure inganciphisa ukulahleka kokuhlangana kwezingxenye ezibaluleke kakhulu. Lapho uwoyela ophakeme ungene kwi-piston cylinder yemoto nge-current collector 9 kanye ne-valve distribution shaft, i-piston isebenza ku-crankshaft nge-connecting rod futhi iyenza ijike, ngaleyo ndlela iqhuba i-working mechanism exhunywe nemoto. Kukhona izinhlobo ezimbili zezimoto, i-single row kanye ne-double row. I-row ngayinye inama-plungers amahlanu noma ayisixhenxe.

b. The structure of single acting crankshaft connecting rod variable radial piston motor is shown in Figure Z. By changing the eccentricity to make the motor variable. A small piston 2 and a large piston 3 are installed on the crankshaft. When the small piston cavity is filled with control oil and the large piston cavity is filled with return oil, the small piston moves upward under the action of pressure oil and pushes the eccentric ring 1 to the maximum eccentric position. At this time, the motor displacement and output torque are the maximum and the speed is the minimum. If the position of the motor is changed by the directional valve, the control oil is injected into the large piston cavity and the return oil is injected into the small piston cavity, the large piston moves downward under the action of the pressure oil, and the eccentric ring is pushed to the minimum eccentric position. At this time, the motor has a small displacement. Under the same oil supply, the output speed increases and the output torque decreases correspondingly. The change of eccentricity can be carried out smoothly in the motor operation; the pressure oil of the motor itself can be used as the control oil, which saves the control oil source; the motor can be combined with the quantitative pump to form a volume speed regulation circuit, which can effectively realize constant power speed regulation. It is especially suitable for towing winch or driving vehicle wheels.

Figure a shows the structure of single acting crankshaft connecting rod variable radial piston motor with slide valve distribution. Each plunger of the motor is equipped with a separate valve spool 1, which is moved by the auxiliary eccentric cam 2. A displacement adjusting mechanism is composed of a speed regulating cylinder 3, a pull rod 4 and a push rod 5. When the piston of the speed regulating cylinder moves, it drives the pull rod to slide left or right to push the push rod down or up. By changing the position of eccentric ring 6, the eccentricity can be changed and the displacement can be adjusted.