Angled Seal Counterbore for Track Link Installation
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Solution Overview
Problem
Existing track chain assemblies face challenges in installing seal assemblies without damaging them, particularly due to heavy loading or deformation, which can lead to lubricant leakage, especially in the housing structures of track links.
Innovation Solution
A track link with an angled seal counterbore is designed, where either the first or second bore forms a blind counterbore with a sidewall angle ranging from three to seven degrees, allowing a seal assembly with a load ring to create a radial interference, facilitating easier installation and reducing the risk of damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If seal assemblies are installed in conventional track link housing structures, then lubrication sealing is achieved, but the seal assemblies are heavily loaded and deformed leading to damage and leakage
Solution Approach 1:
The counterbore angle is changed from conventional values to a specific range of 5-15 degrees, which fundamentally alters the load distribution parameters on the seal assembly. This parameter change reduces the radial and axial loads on the seal by optimizing the force vector components, thereby preventing seal deformation and damage while maintaining effective lubrication sealing.
2Ease of manufacture
If conventional seal housing structures are used, then seal assembly is contained, but installation is difficult and causes damage to the seal assembly
Solution Approach 1:
By optimizing the counterbore angle to 5-15 degrees, the installation process is significantly improved. This angular parameter change creates more favorable insertion conditions, allowing the seal assembly to be installed with proper alignment and reduced mechanical stress, thereby preventing installation-induced damage while ensuring proper containment.
3Volume of stationary object
If seal assemblies are heavily packed in track link housing, then space utilization is improved, but seal assembly damage and lubricant leakage occur
Solution Approach 1:
The counterbore angle parameter (5-15 degrees) is optimized to achieve better space utilization within the track link housing while simultaneously reducing harmful loads on the seal assembly. This angular optimization allows the seal to be properly positioned and supported without excessive packing, maintaining both compact design and seal integrity to prevent lubricant leakage.
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 angled seal counterbore enables secure and damage-free installation of seal assemblies, reducing the likelihood of lubricant leakage in track chain assemblies, enhancing the durability and performance of the track chain system.
Implementation Method 1
a load ring that is in contact with the sidewall and a bottom wall of the counterbore, forming a radial interference with the sidewall that ranges from 0.2 mm to 1 mm
Data Source
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AI summary
A track link (200) comprises a body (201) defining a top surface (204), a bottom surface (206), a first side surface (208) and a second side surface (210), a proximate end (212) and a distal end (214), a first bore (216) adjacent the distal end (214) defining a first longitudinal axis (L216) and a second bore (218) adjacent the proximate end (212) defining a second longitudinal axis (L218); wherein either the first bore (216) or the second bore (218) is a blind bore (228), forming a counterbore (230) configured to house a seal assembly (202) and the counterbore (230) defines a wall (232, 234) that forms an angle (a) with the longitudinal axis of the bore (L216, L218) that is greater than zero degrees.