Backhoe Wear Pad Stabilizer System
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Solution Overview
Problem
Traditional wear pad systems in backhoe tools require frequent and labor-intensive maintenance, leading to downtime and productivity losses for work vehicles, as they wear out and need frequent replacement, causing excess play and noise.
Innovation Solution
A stabilizer system with multiple hydraulic flow paths that adjust force between wear pads and dipper components using a two-position, three-way solenoid valve to control motion, allowing for reduced maintenance by dynamically adjusting force to prevent unwanted movement and enable necessary movement along the actuation direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional wear pad system is used between moving parts, then motion along the actuation direction is enabled and movement in other directions is blocked, but the wear pads wear over time causing excess play and noise, requiring frequent replacement and servicing
Solution Approach 1:
The patent applies the Dynamics principle by making the force applied by the wear pad adjustable rather than static. A force adjustment mechanism dynamically modifies the contact force between the wear pad and the second object, allowing the system to adapt to wear over time and maintain optimal performance without frequent replacements
Solution Approach 2:
The patent implements Parameter changes by altering the force parameter applied by the wear pad. The force adjustment mechanism changes the magnitude of the contact force to compensate for wear, extending the operational life of the wear pad while maintaining reliable motion control
2Reliability
If wear pads are frequently replaced and serviced, then excess play and noise are reduced, but labor-intensive disassembly and reassembly are required, resulting in periodic loss of revenue
Solution Approach 1:
The system dynamically adjusts wear pad force to maintain optimal contact pressure, preventing excessive wear and reducing the frequency of maintenance interventions. This keeps the work vehicle operational longer without compromising motion control precision
Solution Approach 2:
The force adjustment mechanism proactively compensates for wear before it leads to excessive play or noise. By continuously or periodically adjusting the force, the system prevents degradation rather than reacting to it, reducing unplanned downtime
3Stability of the object's composition
If the wear pad system is designed to block movement in all directions except actuation, then stable control is achieved, but the structure becomes complex and maintenance becomes labor-intensive
Solution Approach 1:
Instead of adding more mechanical components to control movement, the patent changes the force parameter applied by the existing wear pad. This simpler approach achieves stable positional control by optimizing the contact force rather than increasing structural complexity
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 stabilizer system reduces maintenance frequency, minimizes downtime, and maintains operational efficiency by dynamically controlling the force between wear pads and dipper components, thereby extending the life of backhoe tool components and reducing labor-intensive servicing.
Implementation Method 1
A two-position, three-way solenoid valve may be used to control motion of the first actuator
Implementation Method 2
The first actuator drives the first wear pad to contact a first side of the second object to control motion of the first object relative to the second object
Data Source
AI summary
A stabilizer system includes a first object that moves relative to a second object and includes a first actuator coupled to a first wear pad. The first actuator drives the first wear pad to contact a first side of the second object to control motion of the first object relative to the second object. The first actuator operates in a first mode and in a second mode. While operating in the first mode, the first actuator applies a first force to the first wear pad to block the motion of first object relative to the second object. While the first actuator is operating in the second mode, the first actuator applies a second force, lower than the first force, to the first wear pad to enable the motion of the first object relative to the second object.