The invention discloses a plunger pump for automobile ABS braking. The plunger pump is mounted in a middle cavity of a valve block; the plunger valve comprises a plunger and a valve body, and an oil inlet hole is formed in the position, corresponding to the plunger, of the valve block. An oil outlet hole is formed in a position corresponding to the valve body; the rear end of the plunger abuts against an eccentric bearing. A front oil cavity is formed in the front part of the valve body, a rear oil cavity is formed in the middle rear part of the valve body and connected with the front oil cavity through an oil channel, a valve body steel ball, a valve body spring and a valve seat are sequentially arranged at the front end of the oil channel, the valve seat comprises a front column with a large front diameter and a rear column with a small rear diameter and a spring hole, and the rear column is inserted into the front oil cavity and is in clearance fit with the front oil cavity. The valve seat and the valve body are in movable clearance fit, the coaxiality error caused by machining and assembling can be compensated, the over-positioning phenomenon caused by the coaxiality error whenthe plunger pump and the valve block are assembled is avoided, and the coaxiality of mounting holes of the plunger pump and the valve block is guaranteed.
一种汽车ABS制动用柱塞泵,安装于阀块的中间腔体内,包括柱塞和阀体,阀块上与柱塞对应位置设有进油孔,与阀体对应位置设有出油孔,柱塞后端与偏心轴承相抵,所述阀体前部设有前油腔,中后部设有后油腔,之间通过油道相连,油道前端依次设有阀体钢球、阀体弹簧及阀座,阀座包括前部直径较大的前柱体及后部直径较小且带弹簧孔的后柱体,后柱体插入到前油腔内且与前油腔间隙配合。本发明阀座与阀体活动间隙配合,可以补偿因加工、装配造成的同轴度误差,避免柱塞泵与阀块装配时因同轴度误差而造成的过定位现象,保证柱塞泵与阀块的安装孔的同轴度。
Plunger pump for automobile ABS braking
一种汽车ABS制动用柱塞泵
2020-05-15
Patent
Electronic Resource
Chinese
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |