A non-conical gear hydraulic motor with outer rotor
A non-conical gear, hydraulic motor technology, applied in the direction of rotary piston engine, rotary or oscillating piston engine, machine/engine, etc., can solve the problem that the configuration of oil inlet and outlet is easy to interfere with the installation position, the size of the planetary gear and the transmission ratio limitation , Affect the motor displacement and output torque, etc., to achieve the effect of compact structure, eliminating trapped oil and increasing life.
Active Publication Date: 2016-09-14
WUHAN UNIV OF TECH
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Problems solved by technology
However, since the main mechanism of the non-circular (column) gear planetary hydraulic motor - the NGW non-circular gear planetary gear train, is mainly arranged on a plane, its radial size is large, the structure is not compact, and the configuration of the oil inlet and outlet holes is easy to install. Position interference, and the size and transmission ratio of the planetary gear are limited, which affects the displacement and output torque of the motor
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[0048] like Figure 13 As shown, an outer rotor non-conical gear hydraulic motor includes a housing, and the left end of the housing 6 is installed with a front bearing cover 1 through bolts. The right end and the large end cap 11 are installed and fixed by bolts. The middle part of the large end cover 11 is fixedly connected with the rear bearing cover 12 by bolts, and the circumferential direction of the large end cover 11 is fixedly connected with the inner non-conical gear 4 by bolts. The front bearing cap 1 compresses the outer ring of the front bearing 2, the rear bearing cap 12 compresses the outer ring of the rear bearing 7, and the inner rings of the two bearings are in interference fit with the left and right shoulders of the output shaft 3. The middle part of the output shaft 3 is interference fit with the outer non-conical gear 8 through a flat key. A closed spherical space is formed between the inner non-conical gear 4, the outer non-conical gear 8 and the housi...
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The invention relates to an outer rotor noncircular bevel gear hydraulic motor. One end of the shell is equipped with a big end cover through a bolt, an output shaft is supported by bearings, and the middle part of the output shaft is in interference fit with an outer noncircular bevel gear through a flat key. The big end cover is in fixed connection with an inner noncircular bevel gear through a bolt. Several planetary circular bevel gears are arranged in an enclosed space formed by the inner noncircular bevel gear, the outer noncircular bevel gear and the shell. One sides of the planetary circular bevel gears are engaged with the inner noncircular bevel gear, and the other sides are engaged with the outer noncircular bevel gear. A plurality of oil inlet holes and oil outlet holes are disposed on the shell sphere to realize inflow and outflow of hydraulic oil. The oil inlet holes and oil outlet holes are identical in number and are arranged at an interval. The requirements of hydraulic motors with low speed and high torque can be satisfied, and compared with inner and outer engaged noncircular (column) gear planetary transmission, the hydraulic motor provided by the invention has the characteristics of compact structure and large unit volume power. According to the actual work requirements, the noncircular bevel gear can take the tooth shape of a sinusoidal tooth, an involute tooth and a helical circular arc tooth. The strength of the gear can be improved, the oil trapping phenomenon can be eliminated, and the service life can be increased.
Description
technical field [0001] The invention relates to a planetary gear type hydraulic power actuator, in particular to an outer rotor non-conical gear hydraulic motor. Background technique [0002] In the prior art at home and abroad, relatively common low-speed high-torque hydraulic motors mainly include plunger type, vane type, gear type and non-circular planetary gear type. The flow rate of the vane pump is relatively uniform, the noise is low, the volume is small, the weight is light, and the service life is long. However, due to the influence of blade strength, oil absorption speed, wear and other factors, it cannot be used in low-speed and high-torque occasions, and the structure is complicated. The plunger pump has the characteristics of compact structure, small volume per unit power, and high working pressure, but it is very sensitive to oil pollution, requires high oil filtration accuracy, high maintenance cost, and is expensive. The gear pump has the characteristics of...
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IPC IPC(8): F03C2/08
CPCF03C2/08
Inventor 韩星会华林郑方焱
Owner WUHAN UNIV OF TECH