A Linear Double Redundancy Differential

Abstract

The invention discloses a linear double-redundancy differential machine. The linear double-redundancy differential machine comprises a shell, and a planet carrier module, a sun gear module, an inner gear ring input shaft module and a sun gear input shaft module positioned in the shell; the planet carrier module is of a hollow structure; the sun gear module is positioned in the hollow structure ofthe planet carrier module, and is engaged with the planet gear module through a gear; the inner gear ring input shaft module is engaged with a gear on the outer side of the planet carrier module through a gear; the sun gear input shaft module is engaged with a gear on the outer side of the sun gear module through a gear; the inner gear ring input shaft module and the solar gear input shaft moduleare used as two input ends of the double-redundancy differential machine, and are connected with a brake and a motor; the planet carrier module is used as an output end of the double-redundancy differential machine, and is connected with an actuating cylinder; and the input ends and the output end are positioned on two sides of the double-redundancy differential machine. The linear double-redundancy differential machine reduces the rotating inertia, the weight and the radial size under the precondition of meeting the output torque, and can be applied to places with high power of 10 kW.

Description

technical field [0001] The invention relates to a linear double-redundancy differential, which belongs to the field of functional structure design of differentials. Background technique [0002] In the current 10kW class high-power first-class civil aerospace delivery servo system, the swing engine includes four nozzles, which are installed at 90 degrees to each other and need to be driven by four electromechanical actuators. The current technology uses a three-redundancy hydraulic servo system, and develops a redundant electromechanical servo system of the same power level to replace the hydraulic servo system, which is easier to maintain and is of great significance. The zero length of this electromechanical actuator is very long, and the envelope size along the axis of the upper and lower lugs is very small, so it is of great significance to develop a redundant electromechanical actuator that adapts to this situation. [0003] For some electromechanical servo systems tha...

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Problems solved by technology

[0006] The Chinese patent "Spurred Cylindrical Planetary Gear Differential", publication number CN201068969Y, discloses a spur-toothed cylindrical planetary gear differential. The defect is that the planetary gear and the planetary shaft are designed in one, and the support method is the optical axis on both sides and the planetary carrier. The copper sleeve on the top is directly matched, and the friction is serious

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