Bearing Shell Resetting Tool for Connecting Rod
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Solution Overview
Problem
Existing methods for resetting a bearing shell that has slipped out of a receptacle on a shaft often result in damage to the shell and potential engine damage due to impact or cracking particles when using mechanical force, especially with soft material bearing shells and split connecting rod eyes.
Innovation Solution
A hand-operated tool with a shell element and holding rod, designed to match the bearing shell's dimensions and structure, allowing for radial pressure and displacement to gently reset the shell without causing damage, featuring an adjustable handle and detachable connection for ergonomic and safe use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If bearing shells are reset by hitting and pressing with any objects in the connecting rod eye, then the bearing shell can be pushed back into position, but damage occurs to the bearing shell and connecting rod eye due to impact forces
Solution Approach 1:
A resetting tool with a shell element is introduced as an intermediary between the operator and the bearing shell. The shell element, having the same wall thickness and circular cylinder radius as the bearing shell, distributes the resetting force uniformly across the bearing shell surface, preventing impact damage to both the bearing shell and connecting rod eye while enabling effective resetting operation
2Productivity
If bearing shells are reset by applying force to push them back into position, then the bearing shell can be repositioned, but cracking particles can be knocked off from adjacent cracked surfaces
Solution Approach 1:
The shell element of the resetting tool is designed with the same wall thickness and circular cylinder radius as the bearing shell, creating a localized contact interface that matches the geometry of the bearing shell. This ensures force is applied only to the bearing shell material itself, avoiding contact with and dislodgment of cracking particles from adjacent cracked surfaces of the connecting rod eye
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
The tool ensures reliable and damage-free resetting of bearing shells by applying uniform pressure, reducing the risk of shell and receptacle damage, and preventing cracking particle dislodgment, particularly suitable for connecting rod assembly on internal combustion engines.
Implementation Method 1
By moving it radially in the circumferential direction on the shaft and applying radial pressure to the bearing shell, it can be reset easily and gently into the mount
Data Source
Figure 1~3
Figure 4
AI summary
The invention relates to a device and a method for resetting a bearing shell (5) that has at least partially slipped out of a receptacle (9) on a shaft (10). According to the invention, the device is designed as a manually operated tool (1). The tool (1) has a shell element (2) in the form of a circular cylinder cutout, the wall thickness and radius of which are preferably adapted to those of the bearing shell (5) to be reset, in particular being approximately equal to those of the bearing shell (5) to be reset.A retaining rod (3) with a handle (4) at the end is attached to the convex side of the shell element wall, wherein the shell element (2) of the tool (1) can be positively engaged on the shaft (10) in front of the slipped bearing shell (5) by means of the handle (4) and the subsequent retaining rod (3), and then the bearing shell (5) can be returned to the receptacle (9) by moving it circumferentially and applying radial pressure to it.