Axial distribution radial piston pump yejiyu zhuji jiegou

创建于05.17

Axial distribution radial piston pump ye típical structure

① Ihlobo lokuxhumana le-radial piston pump liboniswa ku-Fig. l njengestructure ye-axial flow distribution type radial piston pump. Ngaphandle komzimba omkhulu, ipompo inezinhlobonhlobo zezingxenye, ezifana ne-low-pressure oil filling gear pump, safety valve, variable mechanism, push cylinder, suction valve nokunye. I-internal pressure ye-pump body 1 ifakwe ne-port shaft 2, lapho kukhona khona ama-oil suction holes nama-oil pressure holes. I-rotor 3 ixhaswe ku-port shaft 2 ngama-ball bearings amabili. I-plunger 4 ingahamba phambili nangemuva ezikhungweni ze-plunger ezihlelwe radial ku-rotor 3. Lapho i-rotor 3 iqhutshwa ukuba ijike nge-transmission shaft 9, i-plunger ikhululeka ngaphandle futhi icindezela ebusweni obungaphakathi be-conical be-stator 5. I-stator 5 iboshwe ku-drum 6, kodwa i-drum 6 ixhaswe ku-sliding seat 7 ngama-roller bearings amabili, ngakho i-drum 6 ingajika ngokukhululeka ku-sliding seat 7 ne-stator 5. Kukhona ama-guide rails amabili alinganayo ku-sliding seat 7, ahambisana nama-guide rails amabili alinganayo ku-pump body 1, ukuze i-sliding seat 7 ikwazi ukuhamba kwesokunxele nangesokudla ku-pump body 1. Ngasikhathi sinye, iphinde iqhube i-drum 6 ne-stator 5 ukuba zihambe kwesokunxele nangesokudla, ukuze kube nokuphambuka phakathi kwendawo ye-stator 5 ne-rotor 3. Ngakho-ke, lapho i-rotor 3 iqhutshwa nge-transmission shaft 9, i-plunger 4 iyaphindaphinda ezikhungweni ze-plunger ku-rotor 3 kanye nokujika ngakunye, okusho ukuthi, ukuhamba kwe-oil suction nokucindezela kwe-oil. Ngakho-ke, le ndlela ye-radial piston pump ibizwa nangokuthi i-single acting piston pump.

Mum pump, i top ye plunger 4 i spherical surface in approximate, while i inner circular surface ye stator 5 i conical surface, so i contact point pakati ye top ye plunger 4 na i inner conical surface ye stator 5 haipfuuri kuburikidza ne rotation center ye plunger 4, saka friction inogadzirwa pa contact point pakati ye plunger 4 na stator 5 inoumba torque pa rotation center ye plunger 4, ichimanikidza plunger 4 kuti i rotate kutenderedza axis yayo, saka plunger 4 iri mu column Kana plug hole ichifamba kumashure nekumberi, inotenderedzawo kuti iite friction pair pakati pe plunger ne plug hole iine lubrication yakanaka uye wear uniform. Nekuti friction iri pamusoro inoshanda zvakare pa stator 5, stator 5 inogona zvakare kutenderera pa sliding seat 7 pamwe ne drum 6, nokudaro ichideredza zvikuru speed ye relative motion pakati pe rotor 3 ne stator 5, ichideredza mechanical wear, uye kuwedzera service life ye friction pair parts. Mum pump ine modes nhatu dzinoshanduka: manual variable, manual servo variable uye electro-hydraulic proportional servo variable.

② Figure m shows the structural principle of a surface contact variable displacement radial piston pump. The transmission shaft 1 drives the star rotor (cylinder block) 8 with balanced radial force to rotate through the cross coupling 4. The rotor is supported on port shaft 3. The plunger 9 installed in the rotor hole clings to the eccentric stator ring 5 through the statically balanced slipper 6. The plunger is connected with the sliding shoe by a ball hinge and is locked by a snap ring. The sliding shoes are constrained in the eccentric stator ring by two retaining rings 2. During operation, the sliding shoes are pressed to the eccentric stator ring by centrifugal force and hydraulic pressure. When the cylinder block rotates, due to the action of the eccentric stator ring, the plunger will form reciprocating motion, and its stroke is twice of the eccentric distance of the eccentric stator ring. The eccentric position of the stator ring can be adjusted by the variable of the radial relative position on the pump body to control the pistons 7 and 10. The suction and pressure oil pass through the flow passage on the pump body and the valve distribution shaft, and can be controlled by the oil inlet and outlet on the valve distribution shaft. Because the plunger and the inner surface of the stator ring in the pump are close to each other (surface contact) through the sliding shoes with arc surface at the upper end, and the hydraulic pressure acting on the inner surface is completely statically balanced, and the rolling bearing supporting the transmission shaft is only affected by external force, the service life of the pump is long. The RKP radial piston pump produced by Bosch Company in Germany is of this structure. Its maximum working pressure is 38.5mpa, flow range is 16-90ml / R, and maximum speed is 3500r / min.

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