Damper-Assisted Coupling Structure for Excavator Tooth Joints
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Solution Overview
Problem
The coupling operation of excavator tooth points and adapters is hindered by foreign substances entering the coupling space, leading to difficulties in inserting and separating the coupling unit, which affects the smooth operation and lifespan of the components.
Innovation Solution
A damper structure with a flexible portion and a hard portion is integrated into the coupling space, allowing the coupling unit to rotate and change contact positions, compressing and deforming the flexible portion to reduce the hollow volume, thereby improving the coupling and decoupling efficiency and reducing the introduction of foreign substances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a coupling unit is used to connect tooth points and tooth adapters, then the coupling operation facilitates the connection, but foreign substances enter the coupling space and hinder smooth operation
Solution Approach 1:
A damper structure is introduced as an intermediary component between the coupling unit and the coupling space. This damper structure includes a flexible portion that can deform to accommodate foreign substances and a hard portion that provides structural support, effectively mediating the interaction between the coupling unit and the harmful foreign substances in the coupling space.
Solution Approach 2:
The damper structure incorporates a flexible portion that can deform under pressure, allowing it to adapt to the presence of foreign substances in the coupling space. This flexible component acts as a buffer that protects the coupling unit from direct contact with harmful foreign substances while maintaining the coupling operation's smoothness.
2Object-affected harmful factors
If the coupling space is reduced to accommodate foreign substances, then foreign substance accumulation is minimized, but the coupling unit cannot operate smoothly
Solution Approach 1:
The coupling space is segmented into different functional zones: a first space containing the damper structure and a second space containing the coupling unit. This segmentation allows foreign substances to be contained in the damper structure's flexible portion while maintaining a clear, sufficient coupling space for the coupling unit to operate smoothly without interference.
3Force
If the coupling unit rotates to facilitate coupling, then the coupling force increases, but the hollow volume of the flexible portion changes
Solution Approach 1:
The flexible portion's hollow volume dynamically changes in response to the coupling unit's rotation and the resulting pressure variations. As the coupling unit rotates and applies force, the hollow volume compresses; when the pressure is released, the hollow volume expands back. This parameter change allows the damper structure to adapt to varying coupling forces while maintaining effective coupling.
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 damper structure enhances the stability and efficiency of the coupling operation by minimizing the presence of foreign substances and extending the lifespan of the components, ensuring smooth rotation and maintenance of the coupled state.
Implementation Method 1
The flexible portion is compressed and deformed by external pressure, reducing the hollow's volume
Implementation Method 2
a flexible portion having a hollow therein... When the coupling unit rotates in one direction from an initial state... the flexible portion is compressed and deformed between the hard portion and an inner surface of the coupling target object
Data Source
AI summary
Proposed is a combined structure, and the combined structure includes a coupling target object having a coupling space that comprises a first space and a second space communicating with each other, a damper structure accommodated in the first space and including a flexible portion having a hollow therein and a hard portion coupled to the flexible portion and having one surface exposed to an outside, and a coupling unit accommodated in the second space, a portion of which is in contact with one surface of the hard portion. The hollow is closed from the outside in the damper structure. In response to rotation of the coupling unit in the second space, another portion different from the portion of the coupling unit comes into contact with the hard portion.