A High Resolution, Adjustable Stepping Actuator
An actuator, high-resolution technology, used in mechanical equipment, transmissions, belts/chains/gears, etc., to achieve the effects of good load performance, increased torque, and increased output torque
Active Publication Date: 2020-08-07
ZHEJIANG UNIV
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
At present, the development trend of stepping actuators is high power density, high load, high energy efficiency ratio, high protection, compact structure, convenient installation and maintenance, etc., while traditional actuators based on motors or hydraulic pressure are difficult to simultaneously meet the above needs
Method used
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Embodiment Construction
[0039] The present invention will be further described below in conjunction with the accompanying drawings.
[0040] Such as figure 1 As shown, the embodiment of the present invention includes a housing 15, an output shaft 1, an external pinion 13, an internal bull gear 6, a crankshaft 7 and a reciprocating drive assembly.
[0041] Such asfigure 1 As shown, the output shaft 1 is set in the casing 15 through the cylindrical roller bearing 12, and there are two oil passages arranged in parallel along the axial direction inside the output shaft 1, and the two oil passages are respectively the oil inlet oil passage 16 in the shaft and the oil return passage 17 in the shaft, the pressure oil flows in from the oil inlet passage 16 in the shaft, and flows out from the oil return passage 17 in the shaft; Both ends are installed with end caps 3 through bolts, and the middle part of the output shaft 1 is fixed with two external tooth pinions 13, and the outer circumference of the two e...
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The invention discloses a high-resolution and adjustable stepping actuator. An output shaft is arranged in a shell, the interior of the shell is provided with a cavity, the middle part of the output shaft is fixedly connected with an external gear pinion, and the external gear pinion is externally provided with internal gear big gears which are meshed with the external gear pinion, two groups of internal meshing gear pairs with few tooth difference are formed, the two internal gear big gears are connected through a crankshaft which is hinged with the shell; a plurality of groups of reciprocating driving components are arranged around the shell, a piston rod of a plunger cylinder is arranged along the radial direction of the output shaft, the piston rod is connected to the external gear pinion through a compression spring, a rod cavity and rodless cavity of the plunger cylinder are connected with a two-position four-way valve, and are communicated with an oil inlet and oil return pipeline in the output shaft; and the rod cavity and the rodless cavity are communicated with each other through a two-position two-way valve. According to the invention, hydraulic oil is used as a power source, the oil is supplied to the plunger cylinder through an oil path in the output shaft, and the plunger of the plunger cylinder is used to drive the meshed gear to achieve stepped output. The torque is obviously increased, the structure is compact, accurate stepped output is achieved, and the oil path is simpler when multi-stage linkage is used.
Description
technical field [0001] The invention relates to a stepping actuator combined with gear and hydraulic transmission (hereinafter referred to as the actuator). More precisely, the present invention relates to a high-resolution, adjustable stepping actuator consisting of two sets of small-tooth-difference internal meshing gear transmissions, a crankshaft, a plunger cylinder, an oil circuit system, and an output shaft. Background technique [0002] Stepping actuators generally refer to transmission devices that can convert existing mechanical energy, electrical energy or other energy forms into target stepping motion forms through certain specific mechanical transmission structures. At present, various types of actuators based on motors can easily realize step-by-step control by combining corresponding reducers. However, the power density of the motor is low. To achieve real high power output, the micro motor obviously cannot meet the conditions. The traditional hydraulic actua...
Claims
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IPC IPC(8): F16H47/02F16H27/08
CPCF16H27/08F16H47/02
Inventor 王林翔黄国伟华敏捷
Owner ZHEJIANG UNIV