公开(公告)号：WO1994002758A1

公开(公告)日：1994-02-03

申请号：PCT/EP1993001593

申请日：1993-06-22

Applicant: HYDROMATIK GMBH ,  WIEST, Wolfgang

Inventor： HYDROMATIK GMBH

IPC: F16H47/02

CPC classification number: F16H61/472 ,  F16H47/02 ,  F16H59/26 ,  F16H59/70 ,  F16H61/0206 ,  F16H61/0403 ,  F16H61/421 ,  F16H61/431 ,  F16H2059/6853 ,  F16H2059/6861 ,  F16H2059/6876 ,  Y10T74/19153 ,  Y10T74/19163 ,  Y10T477/631 ,  Y10T477/636

Abstract: In a gearbox unit (1) for insertion between a drive motor (47) and a user (48), consisting of a hydrostatic drive (2) changeable by means of an adjusting device (15a, 15b), a final, particularly mechanical gearbox (4) with several ratios (5, 6) and a control device to change the hydrostatic drive (2) by means of the adjusting device (15a, 15b) for a gear-changing process, the gearbox (4), is a synchronised drive with synchronising devices (7) for the ratios (5, 6), a device (UP, V2) to measure or monitor the drive torque (M) of the hydrostatic drive (2) is allocated to the control device (16) and, when the drive torque (M) is greater than the working torque of the relevant synchronisation device (7, 7a) before a gear-changing operation, the control device (16) sets a drive torque (M) on the hydrostatic drive (2) by means of the adjusting device (15a, 15b) which is the same as or lower than the working torque of the synchronising device allocated to the gear ratio (6, 7) concerned.

公开(公告)号：WO1994009293A1

公开(公告)日：1994-04-28

申请号：PCT/EP1993002590

申请日：1993-09-23

Applicant: HYDROMATIK GMBH

Inventor： HYDROMATIK GMBH ,  STURM, Hermann ,  HÖRMANN, Werner

IPC: F16H61/46

CPC classification number: F16H61/4157 ,  F16H61/4061 ,  F16H61/4148 ,  F16H61/423 ,  F16H61/472

Abstract: A hydrostatic transmission has at least one hydropump (1) and at least one adjustable hydromotor (2) coupled to two work lines (17, 18) of which at least one leads to the hydropump, as well as a regulating member (8) regulatable between two regulating range limits for regulating the displacement volume of the hydromotor. The regulating range limits for regulating the hydromotor correspond to a minimum and to a maximum displacement volume. In order to be able to adapt the braking effect obtainable with the hydrostatic transmission to various conditions of use, a positioning arrangement (10) controllable by a regulating signal adjusts at least one of the regulating range limits and a control arrangement (11) adjusts the regulating signal during the override condition of the hydrostatic transmission. In order to increase the braking effect, the positioning arrangement (10) adjusts the adjustable regulating range limit so as to increase the displacement volume of the hydromotor (2).

公开(公告)号：WO1993023670A1

公开(公告)日：1993-11-25

申请号：PCT/EP1993001023

申请日：1993-04-28

Applicant: HYDROMATIK GMBH ,  BECK, Jochen ,  HÖRMANN, Werner

Inventor： HYDROMATIK GMBH

IPC: F04B21/00

CPC classification number: F04B53/04 ,  F04B1/2014 ,  F04B23/106 ,  F16N7/18

Abstract: The invention relates to a hydrostatic engine, especially an axial piston engine, with an engine casing, the interior of which houses a movement rotatably supported on at least one bearing, and an oil leakage chamber opening to the outside via at least one leakage connector. To prevent splash losses from the hydrostatic engine the invention makes provision inside the casing for a pump device (29; 50; 60; 70) in drive connection with the movement (3, 4, 7) which is designed to pump oil leakages from the leakage chamber (28) to the outside through the leakage connectors (8; 37; 72).

公开(公告)号：WO1994012790A1

公开(公告)日：1994-06-09

申请号：PCT/EP1993002871

申请日：1993-10-18

Applicant: HYDROMATIK GMBH

Inventor： HYDROMATIK GMBH ,  RADTKE, Walter

IPC: F04B01/30

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

Abstract: The invention relates to a measuring device for observing the displacement volume setting of axial piston engines of any design, the displacement volumes of which can be adjusted to various values by means of a movable adjuster. The measuring device comprises a bearing surface coupled to the adjuster so that it can move therewith and a measuring sensor arrangement with at least one measuring sensor to detect changes in the position of the bearing surface, the measuring sensor and the bearing surface being each in mutual contact with a contact point. In order to be able with this measuring device to observe functions with different strokes as well, the invention proposes that, for the purposes of joint movement with the adjuster (1), the bearing surface (9) be rotatable about an axis (A) arranged at a distance from the contact point (22, 23; 26, 27; 34, 35). The angle of rotation ( alpha ) of the bearing surface (9) and the distance (x, r) determine the measuring travel (a, b) of the measuring sensor (7; 19; 30, 31) proportional to the movement of the adjuster (1).

公开(公告)号：WO1994009294A1

公开(公告)日：1994-04-28

申请号：PCT/EP1993002687

申请日：1993-10-01

Applicant: HYDROMATIK GMBH

Inventor： HYDROMATIK GMBH ,  STICKEL, Oskar ,  STURM, Hermann

IPC: F16H61/46

CPC classification number: F16H61/4157 ,  B60T1/08 ,  F16H61/40 ,  F16H61/4061 ,  F16H61/423 ,  F16H61/46 ,  F16H2059/6876

Abstract: The invention pertains to a control device of a hydrostatic transmission with a hydraulic pump (1), an adjustable hydraulic motor (2) and a brake valve (5) in two working lines (15, 16) connected to the hydraulic motor and the hydraulic pump, which brake valve closes one of the working lines when the transmission is in override, with a regulating device (8) working from a control pressure taken from the working lines between hydraulic motor and brake valve and used to adjust the displacement volume of the hydraulic motor, and with a control valve (9) for regulating the control pressure admission depending on a control signal. While maximum braking torque is maintained, the braking action of the hydrostatic transmission is improved in that the control signal is proportionate to the speed of the hydraulic motor and, as this speed increases, controls the pressure control admission, via the control value (9), toward minimal displacement volume of the hydraulic motor (2), and in that when a predetermined pressure difference appears in the working line segments (15, 19; 16, 22 and 15, 20) between hydraulic pump (1) and brake valve (5) as well as brake valve (5) and hydraulic motor (2), with a higher pressure in the latter working line segments (15, 20; 16, 23), an override valve (11) overrides the control valve (9) by controlling the control pressure admission toward maximum displacement volume of the hydraulic motor.

公开(公告)号：WO1994002346A1

公开(公告)日：1994-02-03

申请号：PCT/EP1993001821

申请日：1993-07-12

Applicant: HYDROMATIK GMBH ,  LEIBING, Karl-Heinz ,  HANSEN, Kai-Uwe ,  VONNOE, Reinhard

Inventor： HYDROMATIK GMBH

IPC: B62D11/18

CPC classification number: F16H61/435 ,  B60K7/0015 ,  B60K17/10 ,  B60Y2200/25 ,  B62D11/183 ,  F16H61/425 ,  F16H61/46 ,  F16H61/47

Abstract: The invention concerns a control device for a vehicle propulsion drive comprising two hydrostatic transmissions (3, 4) with adjustable reduction ratios, each transmission comprising a hydraulic pump (12, 13) and a hydraulic motor (14, 15). The transmissions are connected up to drive two vehicle-track assemblies (18, 19). Each transmission has an adjustment device (30, 24; 31, 25) controlled by control signals (vl, vr) to adjust the reduction ratio, with a control section including target-value setting (5) and signal-processing (42, 43) facilities. The target-value setting facility sets reduction-ratio target values for each hydrostatic transmission, using for each a movable control lever (36, 37), and generates target-value signals (sl, sr) while the signal-processing facility (42, 43) processes the target-value signals to give control signals and outputs these control signals. In order to avoid spurious changes in vehicle speed, the signal-processing facility is designed to generate a min./max. window from the target-value signals (sl, sr) in accordance with the relationships: min. = minimum (sl, sr) and max. = maximum (sl, sr), and to determine the control signals (vl, vr) to be output in accordance with the equations: vl = vm + (sl + sr) and vr = vm + (sr - sl) when the means value vm = (vl + vr)/2 of the control signals (vl, vr) determined in a preceding signal-processing step lies within the min./max. window, or to correct the control signals (vl, vr) determined in a preceding signal-processing step in order to determine the control signals (vl, vr) to be output in accordance with the equations: vm max.: vl = vl - (vm - max.), vr = vr - (vm - max.), vm - max., when the mean value (vm) of the control signals (vl, vr) determined in the preceding signal-processing step lies outside the min./max. window.