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Actuating cylinder with load sensor

A cylinder, actuation technology, applied in the direction of transmission, transmission control, components with teeth, etc., can solve problems such as complex design of actuating cylinders

Inactive Publication Date: 2019-10-22
SKF MOTION TECH AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the wires connected to the load cell move as the push tube is displaced, and partially actuating the cylinder requires a specific and complex design

Method used

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  • Actuating cylinder with load sensor

Examples

Experimental program
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Effect test

Embodiment Construction

[0031] In this figure, a compact electromechanically actuated cylinder, generally designated 10 , extends along a longitudinal axis XX'. The actuating cylinder 10 comprises a housing 12, an actuating rod 14 movable axially and coaxially with the axis XX', a push tube 15 connected to a first end 14-1 of the actuating rod, an electric motor 16 and a reverse The planetary roller screw mechanism 18 is set in the housing 12 . A screw mechanism 18 is arranged radially between the motor 16 and the actuating rod 14 .

[0032] The mechanism 18 allows the conversion of the rotational movement of the electric motor 16 into a linear movement of the actuator rod 14 in translation along the axis XX′. The motor 16 and the screw mechanism 18 are completely housed within the housing 12 . An actuation rod 14 extends through the housing 12 and projects axially outward.

[0033] In the exemplary embodiment shown, housing 12 includes a tubular body 12-1 having an aperture 28, a front cover 12-2...

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PUM

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Abstract

The invention relates to an actuating cylinder comprising a housing with a main body and a front cover; an actuation rod mounted to be movable longitudinally relative to the housing; an electric motorprovided with a stator and with a rotating rotor shaft; a screw mechanism including a screw connected to the actuation rod, the rotor shaft being disposed around the screw, and a plurality of rollingelements, the rotational movement of the rotor shaft being converted into a linear movement in translation of the screw and of the actuation rod; and at least one bearing for guiding in rotation andsupporting the rotor shaft with respect to the main body of housing. A load path ring has an outer ring portion in axial abutment against a fixed part of the at least one bearing, and an inner ring portion connected internally to said outer ring portion. A load sensor is axially clamped between the front cover and the inner ring portion of the load path ring.

Description

technical field [0001] The invention relates to the field of actuated cylinders, in particular to the field of compact electromechanical cylinders with integrated electric motors. Background technique [0002] An electromechanically actuated cylinder generally consists of a housing, an actuating rod mounted for longitudinal movement relative to the housing, an electric motor having a stator and a rotor shaft for converting the rotational motion of the motor's rotor shaft into linear motion of the actuating rod in translation The mechanism, and at least one bearing, are used to guide the rotation and support the rotor shaft relative to the housing. [0003] Such a mechanism may be a screw mechanism comprising a screw provided with external threads, a nut disposed around the screw and having internal threads, and a plurality of rolling elements engaging the internal and external threads. The elements may be rollers and the mechanism is a roller screw type or the elements may ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H25/22H02K7/06
CPCF16H25/20F16H25/22F16H25/2204H02K7/06F16H2025/2075G01L5/0038G01L5/0061H02K7/083F16H25/2021F16H25/2252F16H25/24F16H2025/2078F16H25/2015F16H63/062H02K7/08
Inventor 劳伦特·伯诺伊特
Owner SKF MOTION TECH AB