Offset Mounting Adapter for Even Wear on Concrete Finishing Tools
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Solution Overview
Problem
Conventional surface processing machines tend to pivot unevenly when transitioning from trowel blades to surface processing tools, leading to uneven wear and reduced tool lifespan due to the design of rotating tool bearings and vertical mounting of non-rotatable tools on spider arms.
Innovation Solution
A mounting adapter that positions the rotational or longitudinal axis of surface processing tools circumferentially behind the trailing side of the spider arm, using an offset mounting plate or bar to prevent pivoting and ensure even wear, allowing tools to spin freely and remain oriented flat on the concrete surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If surface processing tools are mounted directly on spider arms with vertical alignment, then the mounting structure is simple and direct, but the spider arms pivot unevenly causing uneven tool wear and reduced tool lifespan
Solution Approach 1:
An offset adapter is introduced as an intermediary component between the spider arm and the surface processing tool. The adapter includes a mounting surface that attaches to the spider arm and an offset portion that positions the tool at a predetermined offset distance, preventing direct vertical alignment and thereby eliminating uneven pivoting and wear
2Ease of operation
If rotatable surface processing tools are mounted with rotational axes in vertical registry with spider arms, then the mounting alignment is straightforward, but the tools cannot spin freely due to bearing design constraints
Solution Approach 1:
The offset adapter serves as a mediator that decouples the tool's rotational axis from the spider arm's vertical axis. By positioning the tool's rotational axis at a predetermined offset distance from the spider arm's longitudinal axis, the adapter allows the tool to spin freely without interference from the spider arm's structural constraints
3Device complexity
If non-rotatable surface processing tools are mounted with longitudinal axes in vertical registry with spider arms, then the mounting configuration is simple, but the tools do not remain oriented flat on the concrete surface
Solution Approach 1:
The offset adapter acts as an intermediary that repositions non-rotatable tools so their longitudinal axes are offset from the spider arm's longitudinal axis. This offset positioning ensures that the tools remain oriented flat on the concrete surface during operation, correcting the orientation issue caused by direct vertical mounting
Data Source
AI summary
A mounting adapter for mounting a surface processing tool having a rotational or longitudinal axis to at least one spider arm of a rotatable spider assembly of a surface processing apparatus, the spider arm having a leading side and a trailing side as a function of the direction of rotation of the spider assembly. The mounting adapter has a first element for removably attaching the adapter to the spider arm and a second element positioned circumferentially offset behind the first element for positioning the rotational or longitudinal axis of a surface processing tool circumferentially offset behind the trailing side of the spider arm. The first element is an elongate apertured bar and the second element is weld filler material, the bar being connected to said surface processing tool via the weld filler material.