Swing-Type Construction Machine Pipe Clamping
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Solution Overview
Problem
In conventional swing-type construction machines, working device pipes are prone to strong force transmission during swinging operations, leading to pressure against the edge of the horizontal hole in the swing post, which can cause durability issues.
Innovation Solution
A two-stage clamping system is implemented, where the working device pipes are held in a vertical direction by a first clamp with multiple stages of holding portions and a second clamp, allowing for sliding between adjacent pipes to reduce force transmission to spare pipes located outside, thereby minimizing pressure on the horizontal hole edge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If working device pipes are bundled and concentrated horizontally before insertion into the swing post, then the pipes can be easily routed through the horizontal hollow, but strong force is transmitted to the spare pipes during swinging operations, causing durability issues
Solution Approach 1:
The patent transforms the pipe arrangement from a horizontal bundle to a vertical stacked configuration within the horizontal hollow. The first clamp holds pipes at a first height while the second clamp holds pipes at a second height, creating a vertical dimension that separates force transmission paths. This dimensional change allows pipes to be routed through the swing post while preventing force from one pipe from directly transmitting to adjacent pipes during swinging operations.
2Device complexity
If working device pipes are arranged in a single horizontal row, then the structure is simple, but force from expanding pipes presses against the edge of the horizontal hollow, reducing reliability
Solution Approach 1:
The patent segments the pipe arrangement into multiple vertical groups, with each group held by a separate clamp at a different height. The first clamp and second clamp independently hold different sets of pipes, creating segmented force transmission paths. This segmentation prevents force from concentrating at a single location on the horizontal hollow edge, thereby improving durability while maintaining reasonable structural complexity.
Data Source
AI summary
To provide a swing-type construction machine that can reduce force of working device pipes which is generated in accordance with swinging of a working device and presses against a side wall of a swing post. The present invention is configured such that a swing frame side holding body for holding a part of working device pipes 21, which is located at a side of a swing frame 2a, includes a first clamp 22 having a first stage holding portion that clamps one of the group of the working device pipes and a second stage holding portion that is arranged on a position lower than the first stage holding portion and clamps the other group of the working device pipes, while a swing post side holding body for holding a part of the working device pipes 21, which is located at a side of a swing post 6, includes a second clamp 24 having a first stage holding portion that clamps the group of the working device pipes that are clamped, by the first stage holding portion of the first clamp 22 and a second stage holding portion that clamps the group of the working device pipes that are clamped by the second stage holding portion of the first clamp 22.