Rotator Angle Meter Segmentation for Servicing
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Solution Overview
Problem
Rotator arrangements in forestry and harvesting applications face challenges in protecting sensitive components like angle meters from high mechanical forces while allowing for easy installation, servicing, and upgrading in harsh environments.
Innovation Solution
A rotator arrangement design featuring a motor with a stator and rotor, where the angle meter is integrated with separate stator and rotor parts, allowing access and upgrade without dismounting, with the stator part extending through a hole in the stator and having a smaller width for external access, and the rotor part connected centrally along the axial axis, enabling monitoring of absolute angular position with minimal exposure to forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the angle meter is integrated inside the rotator arrangement with separate stator and rotor parts, then the ease of servicing and upgrading is improved, but the device complexity increases
Solution Approach 1:
The angle meter is divided into separate stator and rotor parts that can be independently accessed and serviced. The stator part remains stationary while the rotor part rotates with the rotor, allowing each component to be maintained separately without disassembling the entire rotator arrangement.
Solution Approach 2:
The angle meter components are nested within the rotator arrangement structure, with the rotor part positioned centrally along the axial axis inside the rotor and the stator part arranged within the stator, allowing compact integration while maintaining accessibility for servicing.
2Ease of operation
If the stator part extends through a hole in the stator with smaller width, then the ease of operation for external access is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The stator part extends through a hole in the stator in the axial direction, creating a pathway for external access to the angle meter components. This dimensional arrangement allows servicing from outside the rotator arrangement without requiring disassembly, while the hole dimensions are designed to accommodate the stator part with appropriate clearance.
3Measurement precision
If the rotor part is arranged centrally along the axial axis, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The rotor part is positioned asymmetrically at the central location along the axial axis, which is the optimal position for accurate angular measurement. This central positioning ensures that the angle indicator on the rotor part aligns precisely with the sensor on the stator part, maximizing measurement accuracy while maintaining a compact design.
Data Source
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AI summary
A rotator arrangement (10) comprising a motor (11) with a stator (13) and a rotor (12) arranged inside the stator (13) to rotate with respect to said stator (13) around an axial axis (A). The rotator arrangement (10) comprises a rotor attachment piece (15) connected to the rotor and a stator attachment piece (16) connected to the stator, wherein one of the rotor attachment piece (15) and stator attachment piece (16) is arranged to be attached to a crane arm or the like, and the other is arranged to be attached to a tool implement. An angle meter (17) is arranged to continuously monitor the rotation of the rotor (12) with respect to the stator (13), wherein the angle meter (17) comprises a stator part (18) that is arranged to rotate with the stator (13) a rotor part (19) that is arranged to rotate with the rotor (14), and wherein the angle meter (17) is arranged along the axial axis (A).