Title:
油圧モータユニット
Document Type and Number:
Japanese Patent JP4582597
Kind Code:
B2
Abstract:
A hydrostatic motor unit designed as a wheel drive comprises at least two hydraulic motors, at least one of which has a variable capacity. The hydraulic motors can be switched hydraulically in parallel and have output rotors that can be coupled with each other. The invention teaches that the output rotors are oriented coaxially to one another and are connected to each other in rotational synchronization. The output rotors are preferably part of a one-piece rotor block that contains the work chambers of the two hydraulic motors. The motor unit consists of an internally pressurized, in particular multiple-stroke radial piston motor that has a constant capacity, and a reversible axial piston motor utilizing the swash plate construction that has an adjustable capacity. From a common, axially oriented control surface for the radial piston motor and the axial piston motor, there are hydraulic channels of approximately the same length that lead to the work chambers of the hydraulic motors. The control surface provided with pressure equalization grooves is formed on an axially movable control body, which can be pressed by spring force and hydraulic pressure toward a counter surface located on the rotor block. The rotor block is penetrated by a central recess, in which there are hydraulic lines that emerge in the control surface.
Inventors:
Franz Forster
Application Number:
JP30281699A
Publication Date:
November 17, 2010
Filing Date:
October 25, 1999
Export Citation:
Assignee:
Linde Material Handling GmbH
International Classes:
F03C1/247; F03C1/253; B60K17/10; F03C1/047; F03C1/06; F03C1/26; B60K7/00
Domestic Patent References:
| JP46032016B1 | ||||
| JP7004341A | ||||
| JP59196585U | ||||
| JP50013482B1 |
Attorney, Agent or Firm:
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Hiroshi Sugimoto
Einzel Felix-Reinhard
Toshiomi Yamazaki
Takuya Kuno
Hiroshi Sugimoto
Einzel Felix-Reinhard