公开(公告)号：EP0679228B1

公开(公告)日：1997-04-16

申请号：EP94904993.6

申请日：1994-01-07

Applicant: Danfoss A/S

Inventor： KRISTENSEN, Egon

IPC: F04B1/20

CPC classification number: F04B1/126 ,  F04B1/124 ,  F05C2203/02 ,  F05C2203/0808 ,  F05C2225/04 ,  F05C2225/06 ,  F05C2225/08 ,  F05C2225/10 ,  F05C2225/12 ,  Y10T74/18336

Abstract: A pressure-applying arrangement in a hydraulic axial piston machine is disclosed, having a pressure plate (7) and a piston (9) that is axially displaceable in a cylinder body (3), is biased by a spring (10) and acts against the pressure plate (7). It should also be possible to use such a pressure-applying arrangement when the axial piston machine is operated with a hydraulic fluid that has no or only very little lubricating property, for example, water. For that purpose, the piston (9) is formed from a high-strength thermoplastics material.

公开(公告)号：EP0680398B1

公开(公告)日：2001-02-28

申请号：EP94904143.8

申请日：1993-12-22

Applicant: Danfoss A/S

Inventor： KRISTENSEN, Egon

IPC: B21D39/06 ,  B23P11/02 ,  F04B53/16

CPC classification number: F04B53/168 ,  B21D39/06 ,  B23P11/025 ,  Y10T29/4994

Abstract: A method for mounting a cylinder sleeve (3) in a base member (1) is disclosed, in which the cylinder sleeve (3) is inserted in the base member (1) and the outer diameter of the inserted cylinder sleeve is enlarged at one end, and a hydraulic machine with a base member (1) in which at least one cylinder sleeve (3) is arranged in a cylinder bore (2). In this connection, it is desirable to be able to use materials for the cylinder sleeve that could not previously be satisfactorily fixed in the base member (1). For that purpose, the cylinder sleeve (3) is heated before the outer diameter is enlarged. The cylinder bore (2) has at at least one end a gradual enlargement (12) of diameter and the cylinder sleeve (3) has an enlargement (7) of its outer diameter matched to this enlargement (12) of diameter.

公开(公告)号：EP0733165B1

公开(公告)日：1999-05-19

申请号：EP95903261.6

申请日：1994-12-05

Applicant: Danfoss A/S

Inventor： KRISTENSEN, Egon ,  JEPSEN, Hardy, Peter

IPC: F03C1/04 ,  F03C1/06

CPC classification number: F04B1/0408 ,  F04B1/126 ,  F04B1/2085 ,  F16C2360/00

Abstract: A radial journal bearing (5, 6) is indicated, with an interior bearing surface placed facing an exterior bearing surface, where one of the bearing surfaces comprises a slide shoe (7, 8), which has one end with a contact face loaded to contact against the other bearing surface, and where this end is movable in such a manner that the contact against the other bearing surface can be maintained by a relative displacement of the bearing surface at right angles to the direction of the load. Hereby it is achieved that the variation of the leakage between the slide shoe and the opposing bearing surface is essentially reduced, resulting in longer life and greater stability.

公开(公告)号：EP0733166A1

公开(公告)日：1996-09-25

申请号：EP95902773.0

申请日：1994-11-30

Applicant: Danfoss A/S

Inventor： KRISTENSEN, Egon ,  JEPSEN, Hardy, Peter

IPC: F03C1

CPC classification number: F03C1/0647 ,  F05C2253/12

Abstract: A hydraulic axial piston motor (1) is disclosed, having a rotatable cylinder drum (4), in which several work pistons (6), each provided at one end with a slider shoe (7), are arranged in work cylinders (5) so as to be axially movable, having a control plate (11), a swash plate (8), against which the slider shoes (7) bear, a pressure plate (9) which holds the slider shoes (7) on the swash plate (8), and a pressure-applying unit, which acts on the pressure plate (9) and comprises a hydraulic piston-cylinder arrangement (12, 13). Using such a motor it is desirable for an adequate contact pressure to be produced using simple means. For that purpose, the piston-cylinder arrangement (12, 13) is arranged between the cylinder drum (4) and the control plate (11).

公开(公告)号：EP0733165A1

公开(公告)日：1996-09-25

申请号：EP95903261.0

申请日：1994-12-05

Applicant: Danfoss A/S

Inventor： KRISTENSEN, Egon ,  JEPSEN, Hardy, Peter

IPC: F04B1

CPC classification number: F04B1/0408 ,  F04B1/126 ,  F04B1/2085 ,  F16C2360/00

Abstract: A radial journal bearing (5, 6) is indicated, with an interior bearing surface placed facing an exterior bearing surface, where one of the bearing surfaces comprises a slide shoe (7, 8), which has one end with a contact face loaded to contact against the other bearing surface, and where this end is movable in such a manner that the contact against the other bearing surface can be maintained by a relative displacement of the bearing surface at right angles to the direction of the load. Hereby it is achieved that the variation of the leakage between the slide shoe and the opposing bearing surface is essentially reduced, resulting in longer life and greater stability.

Abstract translation: PCT No.PCT / DK94 / 00455 Sec。 371日期：1996年7月24日 102（e）日期1996年7月24日PCT 1994年12月5日PCT公布。 出版物WO95 / 16130 日期1996年6月15日表示径向轴颈轴承（5,6），其中内部轴承表面面向外部轴承表面，其中一个轴承表面包括滑靴（7,8），其具有一端 接触面被加载以抵靠另一个支承表面，并且在该端部可移动的方式使得能够通过支承表面与负载方向成直角的相对位移来保持与另一个支承表面的接触 。 由此实现滑靴和相对的支承表面之间的泄漏的变化基本上减小，导致更长的使用寿命和更大的稳定性。

公开(公告)号：EP0680398A1

公开(公告)日：1995-11-08

申请号：EP94904143.0

申请日：1993-12-22

Applicant: Danfoss A/S

Inventor： KRISTENSEN, Egon

IPC: B21D39 ,  B23P11 ,  F04B53

CPC classification number: F04B53/168 ,  B21D39/06 ,  B23P11/025 ,  Y10T29/4994

Abstract: A method for mounting a cylinder sleeve (3) in a base member (1) is disclosed, in which the cylinder sleeve (3) is inserted in the base member (1) and the outer diameter of the inserted cylinder sleeve is enlarged at one end, and a hydraulic machine with a base member (1) in which at least one cylinder sleeve (3) is arranged in a cylinder bore (2). In this connection, it is desirable to be able to use materials for the cylinder sleeve that could not previously be satisfactorily fixed in the base member (1). For that purpose, the cylinder sleeve (3) is heated before the outer diameter is enlarged. The cylinder bore (2) has at at least one end a gradual enlargement (12) of diameter and the cylinder sleeve (3) has an enlargement (7) of its outer diameter matched to this enlargement (12) of diameter.

公开(公告)号：EP0770180B1

公开(公告)日：2001-08-08

申请号：EP95924868.3

申请日：1995-06-28

Applicant: Danfoss A/S

Inventor： JEPSEN, Hardy, Peter ,  KRISTENSEN, Egon ,  MARTENSEN, Lars

IPC: F04B1/20

CPC classification number: F04B1/126 ,  F04B1/124 ,  F05C2225/04 ,  F05C2253/12

Abstract: A piston/slide shoe arrangement (1) of a hydraulic piston machine is disclosed, having a slide shoe (6), which is in articulated connection with a piston (4), with a friction-reducing plastics material (11) therebetween, wherein the plastics material, forming a channel (13), extends into a through-opening (12) in the slide shoe in a direction towards a sliding contact surface (7) of the slide shoe, which surface in operation lies against a swash plate (8). In such an arrangement, it is desirable when operating under adverse conditions to prevent the plastics material working its way out from the space between the piston and the slide shoe. For that purpose, the slide shoe (6) and the plastics material (11) are provided outside the through-opening (12) with at least one connecting element (16, 18) which takes up shear forces between slide shoe (6) and plastics material (11).

公开(公告)号：EP0770180A1

公开(公告)日：1997-05-02

申请号：EP95924868.0

申请日：1995-06-28

Applicant: Danfoss A/S

Inventor： JEPSEN, Hardy, Peter ,  KRISTENSEN, Egon ,  MARTENSEN, Lars

IPC: F04B1

CPC classification number: F04B1/126 ,  F04B1/124 ,  F05C2225/04 ,  F05C2253/12

Abstract: A piston/slide shoe arrangement (1) of a hydraulic piston machine is disclosed, having a slide shoe (6), which is in articulated connection with a piston (4), with a friction-reducing plastics material (11) therebetween, wherein the plastics material, forming a channel (13), extends into a through-opening (12) in the slide shoe in a direction towards a sliding contact surface (7) of the slide shoe, which surface in operation lies against a swash plate (8). In such an arrangement, it is desirable when operating under adverse conditions to prevent the plastics material working its way out from the space between the piston and the slide shoe. For that purpose, the slide shoe (6) and the plastics material (11) are provided outside the through-opening (12) with at least one connecting element (16, 18) which takes up shear forces between slide shoe (6) and plastics material (11).

公开(公告)号：EP0679228A1

公开(公告)日：1995-11-02

申请号：EP94904993.0

申请日：1994-01-07

Applicant: Danfoss A/S

Inventor： KRISTENSEN, Egon

IPC: F04B1 ,  F03C1

CPC classification number: F04B1/126 ,  F04B1/124 ,  F05C2203/02 ,  F05C2203/0808 ,  F05C2225/04 ,  F05C2225/06 ,  F05C2225/08 ,  F05C2225/10 ,  F05C2225/12 ,  Y10T74/18336

Abstract: A pressure-applying arrangement in a hydraulic axial piston machine is disclosed, having a pressure plate (7) and a piston (9) that is axially displaceable in a cylinder body (3), is biased by a spring (10) and acts against the pressure plate (7). It should also be possible to use such a pressure-applying arrangement when the axial piston machine is operated with a hydraulic fluid that has no or only very little lubricating property, for example, water. For that purpose, the piston (9) is formed from a high-strength thermoplastics material.

Abstract translation: 公开了一种液压轴向活塞机中的施压装置，其具有可在缸体（3）中轴向移动的压力板（7）和活塞（9），由弹簧（10）偏压并作用于 压板（7）。 当轴向活塞机器以不具有或仅具有非常小的润滑特性的液压流体（例如水）操作时，也应该可以使用这样的压力施加装置。 为此目的，活塞（9）由高强度热塑性材料形成。