专利检索 cpc:"F15B2211/4520130101" 第 1 页

1.

发明授权
CONSTRUCTION MACHINE 有权

公开(公告)号：EP3926177B1

公开(公告)日：2024-05-29

申请号：EP19915058.2

申请日：2019-12-13

IPC分类号： E02F9/22 , F15B11/16 , F15B21/08

CPC分类号： F15B11/16 , E02F9/2296 , E02F9/2285 , E02F9/2228 , E02F9/2235 , F15B2211/634620130101 , F15B2211/633620130101 , F15B2211/2054620130101 , F15B2211/7120130101 , F15B2211/35120130101 , F15B2211/32720130101 , F15B2211/32920130101 , F15B13/0433 , F15B2211/4520130101 , F15B2211/66520130101 , F15B2211/665220130101 , F15B2211/42620130101 , F15B2211/632620130101 , F15B2211/631320130101 , F15B2211/630920130101 , F15B2211/3053520130101 , F15B11/161 , F15B2211/7820130101 , F15B21/087 , F15B2211/665420130101 , F15B2211/4156320130101

2.

发明公开
OPEN CENTRE HYDRAULIC DISTRIBUTOR AND POWER TRANSMISSION SYSTEM FOR TRANSMITTING TO USERS OF AN OPERATING MACHINE 审中-公开

公开(公告)号：EP4435272A1

公开(公告)日：2024-09-25

申请号：EP24162490.7

申请日：2024-03-08

申请人： Bucher Hydraulics S.p.A.

发明人： RIVA, Massimo

IPC分类号： F15B11/16 , F15B11/05 , E02F9/22

CPC分类号： F15B2211/2054620130101 , F15B2211/311620130101 , F15B2211/4520130101 , F15B11/16 , F15B2211/305520130101 , F15B2211/7120130101 , F15B11/055 , E02F9/2282 , E02F9/2296 , E02F9/2235 , F15B2211/2053820130101 , F15B2211/2051520130101 , F15B2211/665120130101 , F15B2211/630620130101 , F15B2211/665220130101

摘要： Open centre hydraulic distributor (10) of a fluid, comprising:
- a free circulation line (L2) that connects a supply line (L1) for supplying a fluid from a pump (P) of the negative control type to at least one discharge (T1, T2);
- a delivery line (L3) that connects the supply line (L1) to one or more users (A1, B1, A2, B2) downstream of the distributor (10);
- at least one directional valve (SV1, SV2) that intercepts the free circulation line (L2) and the delivery line (L3), and configurable in a first and a second position so that the movement from the first to the second position narrows a transit area of the free circulation line (L2) and opens a transit area of the delivery line (L3);
- a slide valve (1) arranged on the free circulation line (L2) downstream of the directional valve (SV1, SV2);
- a valve device (2) that is activated when a threshold value given by a pressure delta between upstream and downstream of the directional valve (SV1, SV2) is reached on the free circulation line (L1), and maintains this pressure delta equal to the threshold value;
- a negative control line (L4) to pick up a pressure signal from the free circulation line (L2) in a position downstream of said at least one direction valve (SV1, SV2) and upstream of the slide valve (1).