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Pump/motor with integrated variator for use in hydraulic systems

A transmission, hydraulic piston pump technology, applied in fluid pressure actuation system components, servo motors, vehicle gearboxes, etc., can solve problems that affect system effectiveness, lack of efficiency, and high cost

Active Publication Date: 2019-08-30
DANFOSS POWER SOLUTIONS II TECH AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Existing hydraulic energy recovery systems can be costly and inefficient
In addition, such systems suffer from reliability issues and often lack the flexibility to recover energy from multiple sources simultaneously or individually
This limits the amount of energy that can be recovered and reused, which affects the effectiveness of the system

Method used

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  • Pump/motor with integrated variator for use in hydraulic systems
  • Pump/motor with integrated variator for use in hydraulic systems
  • Pump/motor with integrated variator for use in hydraulic systems

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0103] Embodiment 1: In any of the embodiments disclosed herein, the transmission includes an epicyclic gear set having at least three nodes. The transmission includes a pumping unit connected to the first node of the epicyclic gear set. The transmission includes a clutch connected to the second node of the epicyclic gear set. The clutch is selectively movable between three positions. When in the first position, the clutch allows the second node to spin freely. When in the second position, the clutch connects the second node to the stationary surface. When in the third position, the clutch connects the second node to the electric motor. The transmission includes a receiver connected to the third node of the epicyclic gearset. The receiver is configured to receive the drive shaft.

Embodiment 2

[0104] Embodiment 2: In any of the embodiments disclosed herein, the transmission may further include a housing. An epicyclic gear set is positioned within the housing. A clutch connects the second node to a fixed surface, which is the housing.

Embodiment 3

[0105] Embodiment 3: In any of the embodiments disclosed herein, the pumping unit is positioned within the housing.

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PUM

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Abstract

A variator includes an epicyclic gear set that has at least three nodes. The variator includes a pumping unit connected to a first node of the epicyclic gear set. The variator includes a clutch connected to a second node of the epicyclic gear set. The clutch is selectively movable between three positions. When in the first position, the clutch allows the second node to freewheel. When in the second position, the clutch connects the second node to a fixed surface. When in the third position, the clutch connects the second node to an electric motor. The variator includes a receiver connected tothe third node of the epicyclical gear set. The receiver is configured to receive a drive shaft.

Description

[0001] Cross References to Related Applications [0002] This patent application was filed as a PCT International Patent Application on January 23, 2018, and claims the benefit of U.S. Patent Application Serial Nos. Filed January 23, 2017, the disclosure of which is incorporated by reference in its entirety. Background technique [0003] Moving machinery (e.g., excavators, tractors, wheel loaders, concrete pump trucks, etc.) typically includes hydraulic systems with ) provides power to hydraulically driven linear actuators and rotary actuators. Typically, linear actuators include hydraulic cylinders and rotary actuators include hydraulic motors. By accessing the user interface of the machine control system, the machine operator can control the movement of various machine components. [0004] A typical moving machine includes a prime mover (eg, diesel engine, spark ignition engine, electric motor, etc.) serving as the overall power source for the moving machine. Typically, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H47/04F16H61/00F16H31/00F16H57/04F16H3/72
CPCF16H47/04F16H57/0476F16H3/724E02F9/2271E02F9/2289F15B11/165F15B21/087F16H3/44H02K7/108H02K7/116H02K11/0094F16H2200/2005
Inventor 亚伦·赫泽尔·贾戈达埃里克·约瑟夫·曼恩王梦保罗·布伦纳
Owner DANFOSS POWER SOLUTIONS II TECH AS