Portable Bush Extraction and Insertion Device
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Solution Overview
Problem
Existing devices for extracting and inserting bushes are not portable and cannot be used for both extraction and insertion with a single device, requiring multiple tools and interventions, especially for large-sized bushes.
Innovation Solution
A device comprising a short pipe, tie-rod, traction bracket, and hydraulic cylinder, allowing for the extraction and insertion of bushes through a combination of mechanical and hydraulic forces, with features like threaded connections, slits, and wedges for additional force application, enabling easy and quick replacement of bushes on-site.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate devices are used for extracting and inserting bushes, then extraction and insertion functions can be performed, but multiple tools and warehouse interventions are required
Solution Approach 1:
The patent combines extraction and insertion functions into a single device. The tool integrates a traction bracket for extraction and a pushing bracket for insertion, allowing both operations to be performed with one tool rather than requiring separate devices for each function.
Solution Approach 2:
The device is designed to perform multiple functions: it can extract bushes using the traction bracket and also insert new bushes using the pushing bracket. This universal design eliminates the need for multiple specialized tools and enables on-site replacement operations.
2Ease of operation
If non-portable devices are used for bush replacement, then extraction and insertion can be performed, but on-site operations require warehouse interventions
Solution Approach 1:
The device is designed as a portable, segmented tool that can be easily transported to the site. The hydraulic cylinder and brackets are configured as separate components that can be assembled and disassembled, enabling the tool to be moved to the intervention location rather than requiring the workpiece to be moved to a fixed workshop.
3Force
If manual extraction methods are used, then simple tools are required, but sufficient traction force cannot be applied to large-sized bushes
Solution Approach 1:
The device incorporates a hydraulic cylinder that provides powerful traction force for extracting large-sized bushes. The hydraulic system generates sufficient force to remove heavily installed bushes that cannot be extracted by manual methods, while the cylinder can be repositioned via the tie-rod mechanism to apply force at optimal points.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient and rapid replacement of bushes using a single device for both extraction and insertion, facilitating on-site operations without the need for multiple tools or warehouse interventions, particularly suitable for large-sized bushes.
Implementation Method 1
a hydraulic cylinder (28), blocked against the short pipe (11) by the tie-rod stopping element (24) connected to the tie-rod (12)
Implementation Method 2
The traction bracket 15 has a threaded hole 21 by means of which it can be connected to the tie-rod 12 by screwing it on a first threading 22 obtained on a first end of the tie-rod 12
Data Source
AI summary
A device (10) for extracting and inserting bushes (20) is described, comprising a short pipe (11) with two longitudinal slits (16), a tie-rod (12) capable of being inserted in the short pipe (11), a traction bracket (15) capable of being connected to the tie-rod (12) for exert a traction onto the bush (20) to be extracted with two projections (18) capable of being inserted in the slits (16) when the traction bracket (15) is inserted in the short pipe (11), a tie-rod stopping element (24), a short pipe stopping element (25), and bracket stopping elements (26) when inserting the bush (20); such device (10) is used for extracting and for inserting the bush (20) in a seat (35) using a traction device (28) blocked against the short pipe (11) by the tie-rod stopping element (24) connected to the tie-rod (12).