Quick Coupler Side-Wall Hydraulic Coupling for Dirt Protection
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Solution Overview
Problem
Existing quick couplers for construction machines are prone to premature wear and damage due to exposure to weather and dirt, particularly affecting the coupling elements on the top and bottom sides, which are not easily accessible when locked with an adapter.
Innovation Solution
The quick coupler design incorporates coupling elements of a second type positioned on longitudinal walls, allowing them to be protected from environmental exposure and easily accessible when needed, with hydraulic connections between these elements and those of a first type, and a locking device actuated by a double-acting hydraulic cylinder for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If coupling elements are positioned on the top and bottom sides of the quick coupler, then they are easily accessible for connection, but they are exposed to weather and dirt causing premature wear
Solution Approach 1:
The patent repositions coupling elements from the traditional top/bottom surfaces to the longitudinal walls of the quick coupler housing. This spatial relocation to a different dimension (side walls instead of top/bottom surfaces) maintains accessibility while reducing exposure to environmental contaminants that typically accumulate on upper and lower surfaces.
2Object-affected harmful factors
If coupling elements are positioned on longitudinal walls, then exposure to dirt and weather is reduced, but accessibility when locked with adapter may be compromised
Solution Approach 1:
The patent applies local quality by positioning coupling elements on the longitudinal walls where they benefit from reduced environmental exposure while maintaining operational accessibility. This localized placement optimizes the specific function of each coupling element based on its position, allowing protected placement without compromising overall system functionality.
3Use of energy by moving object
If hydraulic connections are made through top-side coupling elements, then hydraulic drive is supplied, but the quick coupler becomes relatively high requiring predetermined engagement distance
Solution Approach 1:
The patent relocates hydraulic coupling elements from the top surface to the longitudinal walls, changing the spatial dimension of connection points. This repositioning allows hydraulic connections to be made at a lower vertical position, reducing the overall height requirement of the quick coupler assembly and enabling closer engagement with the excavator arm.
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 design significantly reduces exposure to dirt and weather, enhances handling ease, and ensures secure attachment, minimizing wear and maintenance issues while maintaining operational efficiency.
Implementation Method 1
a locking device (24) with at least one locking bolt (54) and a drive device (24), wherein the at least one locking bolt (54) protrudes from one of the two transverse walls (20) in a locked position
Implementation Method 2
The block cylinder in turn is in hydraulic connection with the hydraulic drive of the locking bott pair
Data Source
AI summary
A quick coupler for construction machines. An embodiment of the quick coupler comprises a housing with two opposing longitudinal walls, two opposing transverse walls, a top side, a bottom side, and a block cylinder inside the housing. The quick coupler may also comprise a locking device with a locking bolt and a drive device. The locking bolt protrudes from one of the two transverse walls in a locked position. The quick coupler may also comprise a first coupling element having a coupling end section and a second coupling element having a coupling end section hydraulically connected to one another, wherein the second coupling element is arranged on one of the two longitudinal walls of the housing.