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Linear adjusting driver

A technology for adjusting drives and straight lines, applied in transmissions, belts/chains/gears, mechanical equipment, etc., to solve problems such as no teaching

Active Publication Date: 2017-09-22
ZF FRIEDRICHSHAFEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But DE 2009 028 568 A1 still does not teach how the screw of the non-self-locking screw can be further driven in the event of failure of the main drive

Method used

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  • Linear adjusting driver
  • Linear adjusting driver
  • Linear adjusting driver

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] figure 1 An exemplary embodiment of a linear adjustment drive 1 is shown, which has a first screw drive in the form of a trapezoidal screw drive 2 and a second screw drive in the form of a ball screw drive 3 .

[0053] The trapezoidal screw drive 2 comprises a self-locking first screw in the form of a self-locking trapezoidal screw 4 and a first nut in the form of a trapezoidal screw nut 5 , wherein the thread of the trapezoidal screw 4 has a first pitch. The ball screw drive 3 comprises a second non-self-locking screw in the form of a ball recirculating screw 6 and a second nut in the form of a ball recirculating nut 7 , wherein the thread of the ball recirculating screw 6 has a second pitch.

[0054] The ball recirculation screw 6 (if driven and rotated) is configured for linear adjustment of the ball recirculation nut 7 . In the illustrated embodiment, the ball recirculation nut 7 forms the driven element 8 to be adjusted in a straight line. The driven element 8 co...

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PUM

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Abstract

The invention relates to a linear adjusting driver , comprising : a first screw drive mechanism having a self-locking first screw and a first nut , a first screw (whose thread having a first pitch) , a second screw drive mechanism having a non-self-locking second screw and a second nut , a second screw (whose thread having a second pitch); a first drive is configured to cause the rotary motion of the first screw and the rotary motion of the second screw to interact with each other at the transmission speed ratio and to disengage them from each other. The first pitch and the second pitch and the transmission ratio are coordinated with each other such that the first and second screws are moved in kinematically parallel to the rotational movement of the first screw and the second screw. The second screw is configured in a rotary motion for adjusting the driven element on a straight line via a second nut which is configured to adjust the driven element in a straight line by a first nut during rotational movement. The invention also relates to another linearly regulated actuator.

Description

technical field [0001] The invention relates to a linear adjustment drive, which is used in particular in aircraft, such as civil aircraft with propeller turbine engines. Background technique [0002] Linear adjustment drives are used to convert, in particular, the rotational movement of the screw into, in particular, the longitudinal movement of the nuts, which can be adjusted axially along the screw. Linear actuators are used especially in the field of wing and empennage technology in aeronautics and spaceflight in order to extend or retract corresponding elements, wherein these elements are exposed to high and varying forces during flight. Since these elements are particularly safety-critical, in particular during flight operation, it is firstly necessary to prevent an undesired reset of these elements and, on the other hand, to achieve increased redundancy of the linear adjustment drive. [0003] A device for blocking a linear adjustment drive is known from DE 2009 028 ...

Claims

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Application Information

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IPC IPC(8): F16H25/20F16H25/22
CPCF16H25/205F16H2025/2053F16H25/20F16H25/2204
Inventor 丹尼尔·沃尔夫
Owner ZF FRIEDRICHSHAFEN AG