公开(公告)号：EP2121280A1

公开(公告)日：2009-11-25

申请号：EP07856849.0

申请日：2007-12-18

Applicant: ROBERT BOSCH GMBH

Inventor： SCHMIDT, Stefan ,  DÖRR, Heribert

IPC: B29C45/82 ,  F04B49/06 ,  F04B49/20

CPC classification number: F04B49/20 ,  B29C45/82 ,  B29C2945/76006 ,  B29C2945/76083 ,  B29C2945/76785 ,  B29C2945/76812 ,  F04B49/002 ,  F04B2201/0206 ,  F04B2201/1201 ,  F04B2201/1204 ,  F04B2201/1205 ,  F15B2211/20515 ,  F15B2211/20546 ,  F15B2211/6313 ,  F15B2211/6336

Abstract: An electro-hydraulic control arrangement is equipped with an adjustable fluid pump and with a variable speed electric drive. A pressure detecting unit allows the detection of the fluid pressure. The main control circuit of said electro-hydraulic control arrangement comprises a rotational speed adjusting element of the electric drive as the adjusting element. The fluid pressure, and thus, for example, a force exerted by a cylinder, or a downstream adjusting variable, such as a position or a speed, can be controlled by means of the main control circuit. A displacement volume adjusting element of the fluid pump is actuated by means of a secondary adjusting chain as a function of the fluid pressure detected.

公开(公告)号：EP1543243A1

公开(公告)日：2005-06-22

申请号：EP03780277.4

申请日：2003-09-24

Applicant: Volvo Construction Equipment Holding Sweden AB

Inventor： CHARLES, Georges

IPC: F04B49/06

CPC classification number: F04B49/065 ,  F04B27/0886 ,  F04B2201/1204 ,  F04B2201/1205 ,  F04B2205/10 ,  F04B2205/11

Abstract: The invention relates to a loader/excavator-type heavy-construction machine comprising a hydraulic system (1) which powers one or more hydraulic actuators. The aforementioned hydraulic system is equipped with a variable-delivery pump (4) which can operate in two different modes, namely full power mode for use as an excavator and reduced power mode for use as a loader. The invention is characterised in that it also comprises a temperature sensor (20) which is used to determine the temperature of the oil in the hydraulic system (1) and means of automatically switching the operation of the pump (4) from full power mode to reduced power mode when the oil temperature exceeds a pre-determined threshold.

公开(公告)号：EP0832360B1

公开(公告)日：1999-09-08

申请号：EP95913049.3

申请日：1995-03-23

Applicant: ROBERT BOSCH GMBH

Inventor： ROBELLER, Walter ,  PFUHL, Berthold ,  LEUTNER, Volkmar ,  BERTSCH, Dieter ,  ZUMBRAEGEL, Joachim

IPC: F04B49/08 ,  F04B49/06 ,  F04B11/00

CPC classification number: F04B49/06 ,  F04B11/00 ,  F04B49/08 ,  F04B2201/0804 ,  F04B2201/1205 ,  F04B2205/16

Abstract: A variable displacement electro-hydraulic pump is operated in a closed loop position control circuit. The adjusting pistons at the adjusting member of the pump are controlled for that purpose by a control valve (20) that in turn is driven by a control amplifier (28). The adjustment path of the control valve and the adjustment path of the adjusting member of the pump are supplied as real values to this control amplifier (28). In addition, an adjusting signal that depends on the angle of rotation of the pump is generated at the control amplifier. This additional pulse-shaped adjusting signal allows the oscillating effects of the driving unit forces on the hydraulic fixation, as well as the resulting noises to be compensated.

公开(公告)号：EP0736708B1

公开(公告)日：1998-11-04

申请号：EP96104071.4

申请日：1996-03-14

Applicant: BRUENINGHAUS HYDROMATIK GMBH

Inventor： Sommer, Josef

IPC: F16H61/46 ,  F16H61/42

CPC classification number: F16H61/465 ,  F04B49/065 ,  F04B2201/1205 ,  F04B2203/0605 ,  F04B2207/044 ,  F16H61/433 ,  F16H61/46

公开(公告)号：EP0724076B1

公开(公告)日：1998-01-21

申请号：EP95630125.3

申请日：1995-11-23

Applicant: DENISON HYDRAULICS, INC.

Inventor： Schaffner, Larey D.

IPC: F04B49/00

CPC classification number: F04B49/002 ,  F04B2201/1205 ,  F04B2205/08 ,  F04B2205/09

公开(公告)号：EP0624229A1

公开(公告)日：1994-11-17

申请号：EP93923489.0

申请日：1993-10-18

Applicant: Hydromatik GmbH

Inventor： RADTKE, Walter

IPC: F01B3 ,  F04B1

CPC classification number: F04B1/30 ,  F01B3/103 ,  F04B1/324 ,  F04B2201/1205

Abstract: La présente invention concerne un appareil de mesure permettant de déterminer le réglage du volume de déplacement de machines à pistons axiaux de tout type, dont le volume de déplacement peut être réglé à des valeurs différentes par un organe de réglage déplaçable. A cet effet, l'appareil comprend une surface de contact couplée avec l'organe de réglage de façon à se déplacer avec lui, et un ensemble de détection comportant au moins un palpeur pour détecter les variations de la position de la surface de contact, le palpeur et la surface de contact étant chacun en contact mutuel avec un point de contact. Pour observer avec cet appareil de mesure également des fonctions ayant des courses différentes, l'invention propose que, pour le déplacement commun avec l'organe de réglage (1), l'orientation de la surface de contact (9) puisse tourner autour d'un axe de rotation (A) disposé à une certaine distance (x, r) du point de contact (22, 23; 26, 27; 34, 35). L'angle de rotation (alpha) de la surface de contact (9) ainsi que la distance (x, r) déterminent le déplacement de mesure (a, b) du palpeur (7; 19; 30, 31), lequel déplacement est proportionnel à la valeur du réglage correspondant de l'organe de réglage (1).

公开(公告)号：KR100658249B1

公开(公告)日：2006-12-14

申请号：KR1020047005347

申请日：2002-10-04

Applicant: 푸츠마이스터 콘크리트 펌프스 게엠베하

Inventor： 벤커트,하르트무트 ,  폰베우멘,파울 ,  페트졸트,볼프-미카엘

IPC: F04B49/06

CPC classification number: F04B49/065 ,  F04B15/02 ,  F04B2201/1204 ,  F04B2201/1205 ,  F04B2203/0209 ,  F04B2203/0605 ,  Y10S417/90

Abstract: 이송용량 제어시스템으로 구성된 고점도 펌프. 상기 고점도 펌프는 대개 내연기관인 구동모터(50), 구동모터에 연결된 변경 가능한 배제체적(V)을 가진 가역펌프인 유압펌프(6), 유압펌프(6)에 연결되어 왕복행정(푸시-풀 방식)으로 제어되는 두 개의 유압실린더(5,5'), 유압실린더에 연결된 이송실린더(7,7'), 구동모터(50)에 연결되어 회전수(N)를 조정하는 조정기, 유압펌프(6)에 연결되어 배제체적(V) 배제체적을 조절하는 제어요소(18,20), 유압펌프 및 모터의 회전수(N) 및 유압펌프의 배제체적(V)을 조절하는 제어모듈(54), 이송실린더(7,7')의 이송용량(F)을 조절하기 위한 최종제어요소(56)를 포함하는 제어유닛, 최종제어요소(56)의 위치에 반응하고 소프트웨어 방식으로 회전수 조정기 및 배제체적 조정기(20)에 정상값을 주는 전자제어유닛(108)으로 구성된다. 이 방법은 실제 사용 중에 연료소모, 소음 및 배기가스를 줄이고, 고점도 펌프의 작동 편의를 주는 개선을 가능하게 한다.

公开(公告)号：KR1019930006598B1

公开(公告)日：1993-07-21

申请号：KR1019850003245

申请日：1985-05-13

Applicant: 캐타필라 인코포레이티드

Inventor： 란달엠.미트첼

IPC: B60W10/00 ,  F16H61/00

CPC classification number: B60W10/06 ,  B60W10/04 ,  B60W10/103 ,  B60W30/18 ,  E02F9/2246 ,  F04B49/065 ,  F04B2201/1201 ,  F04B2201/1205 ,  F16H61/42 ,  F16H61/465

Abstract: 내용 없음.

公开(公告)号：EP2593679B1

公开(公告)日：2016-04-27

申请号：EP11730221.6

申请日：2011-07-02

Applicant: Robert Bosch GmbH

Inventor： ARNS, Stefan

IPC: F04B49/20

CPC classification number: F04B49/002 ,  F04B17/03 ,  F04B49/20 ,  F04B2201/1201 ,  F04B2201/1204 ,  F04B2201/12041 ,  F04B2201/1205 ,  F04B2201/12051 ,  F04B2203/0209 ,  F04B2205/03 ,  F04B2205/04 ,  F04B2205/05

公开(公告)号：EP2121280B1

公开(公告)日：2014-03-05

申请号：EP07856849.0

申请日：2007-12-18

Applicant: ROBERT BOSCH GMBH

Inventor： SCHMIDT, Stefan ,  DÖRR, Heribert

IPC: B29C45/82 ,  F04B49/06 ,  F04B49/20

CPC classification number: F04B49/20 ,  B29C45/82 ,  B29C2945/76006 ,  B29C2945/76083 ,  B29C2945/76785 ,  B29C2945/76812 ,  F04B49/002 ,  F04B2201/0206 ,  F04B2201/1201 ,  F04B2201/1204 ,  F04B2201/1205 ,  F15B2211/20515 ,  F15B2211/20546 ,  F15B2211/6313 ,  F15B2211/6336