Portable Roller Compactor Articulated Arm Kinematics
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing transportable roller compactors face complex motion kinematics and unfavorable weight distribution due to their multi-part articulated arm designs, leading to complicated transitions between rest and working positions and inefficient space utilization.
Innovation Solution
A transportable roller compactor with a pivotably mounted articulated arm on a movable carriage, allowing for a simplified two-part design and reduced pivot angle, enabling a more straightforward transition between positions and improving weight distribution by positioning the compactor roller at the front during transport.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a multi-part articulated arm design is used, then the compactor roller can be positioned in the container, but the motion kinematics become complicated and the transition between rest and working positions becomes complex
Solution Approach 1:
The articulated arm is divided into two segments: a first articulated arm member mounted on the carriage and a second articulated arm member mounted on the first. This segmentation allows each segment to perform a specific function, simplifying the overall motion kinematics while enabling the compactor roller to reach the container position.
Solution Approach 2:
Instead of having the articulated arm pivot directly from a horizontal position, the invention inverts the approach by using a cranked first articulated arm member that first moves the compactor roller to a temporary position, then uses a second articulated arm member to complete the movement to the final container position. This inversion simplifies the pivot angle requirements.
2Device complexity
If the compactor roller is positioned at the rear during transport, then the articulated arm can be folded, but the weight distribution becomes unfavorable for transport
Solution Approach 1:
The invention makes the positioning of the compactor roller dynamic by using the cranked first articulated arm member that can be rotated to different angles. During transport, the cranked position allows the compactor roller to be positioned at the front for favorable weight distribution, while during operation, it can be repositioned to the container location.
Solution Approach 2:
The first articulated arm member is designed with a cranked, asymmetric geometry that allows it to perform both the folding motion and the repositioning function. This asymmetric design enables the compactor roller to be moved to the front during transport for better weight distribution, while still allowing the articulated arm to fold properly.
3Ease of operation
If a three-part articulated arm design is used, then the compactor roller can be positioned in the container, but the lever ratios become unfavorable when pivoting the frame-mounted section
Solution Approach 1:
The invention extracts the problematic pivot joint from the frame-mounted section by mounting the first articulated arm member on the movable carriage instead. This removes the unfavorable lever ratio issue from the frame-mounted section, as the carriage-based mounting allows for more favorable pivot mechanics while still achieving the required container positioning.
Data Source
AI summary
A portable roller compactor for compacting waste located in a container, which is open on the top, has a frame-like basic structure and an articulated arm, one end of which is supported by the basic structure, and the other, free end of which supports a roller compactor that essentially can be rotated about a horizontal axis of rotation. The articulated arm of the roller compactor is pivotably attached to a sliding carriage, which is mounted on the frame-like base structure and can be moved in a longitudinal direction.