Slanted Guide Attachment for Replaceable Wearing Parts
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Solution Overview
Problem
Existing attachment methods for replaceable wearing parts on implements, such as ploughs and loader buckets, often fail to provide a secure fit without fasteners, leading to potential detachment during use, especially when moving in reverse directions.
Innovation Solution
The design incorporates a supporting surface with slanted guide portions on the wearing-part holder and wearing part, allowing the abutment portion to rest against the supporting surface, enhancing friction and securing the wearing part in place without screws or bolts, using a socket-and-pin type attachment with slanted guide faces that decrease in distance from the leading edge, ensuring a stable attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a socket-and-pin type attachment is used without fasteners, then the wearing part can be quickly replaced by driving it into frictional engagement, but the attachment may loosen or detach during use, especially when moving in reverse directions
Solution Approach 1:
The guide portions are configured with slanted surfaces that create a curved engagement path. When the wearing part is driven into the attachment portion, the slanted guide portions guide it into a self-locking position where the abutment portion contacts the supporting surface, creating a reliable attachment that resists reverse motion forces.
Solution Approach 2:
The invention adds a vertical dimension to the attachment mechanism by introducing a supporting surface and abutment portion that contact in the vertical direction, while the guide portions operate in a horizontal plane. This multi-dimensional engagement provides both quick installation and secure retention, preventing detachment during reverse movement.
2Reliability
If the guide portions are slanted relative to the supporting surface, then the abutment portion is forced against the supporting surface to create friction and secure the wearing part, but the manufacturing precision requirements increase
Solution Approach 1:
The slanted guide portions are pre-configured at specific angles during manufacturing to automatically guide the wearing part into the correct position and force the abutment portion against the supporting surface during installation. This preliminary geometric configuration ensures proper alignment and friction engagement without requiring high-precision adjustment during assembly.
Solution Approach 2:
The slanted guide portions and supporting surface work together to automatically secure the wearing part through friction as it is driven into place. The geometry of the components themselves creates the locking action, eliminating the need for additional fasteners or complex adjustment mechanisms, thereby reducing overall manufacturing complexity despite the slanted surfaces.
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
This solution provides a more secure attachment of the wearing part, reducing the risk of unintentional loosening during operation, especially when moving in reverse, by utilizing friction between the abutment portion and the supporting surface, ensuring better durability and longevity of the wearing part.
Implementation Method 1
When the wearing part is being fitted, friction, in addition to the friction between the corresponding guide portions, will arise between the abutment portion(s) of the wearing part and the supporting surface. This ensures a better attachment of the wearing part on the implement
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A device for the attachment of a replaceable wearing part (4) to be attached at a leading edge (22) of an implement (1) is described, wherein, at the leading edge (22), a supporting surface (21) is formed which is arranged to receive and fix a wearing-part holder (3), one of the wearing-part holder (3) and the wearing part (4) forming an attachment projection (31) and the other of the wearing-part holder (3) and the wearing part (4) forming a corresponding socket (43), the attachment projection (31) and the socket (43) being provided with corresponding, cooperating guide portions (32, 431), the guide portions (32) of the wearing-part holder (3) being formed as guide faces (32a, 32c, 32e) facing the supporting surface (21) and being slanted relative to the supporting surfaces (21), falling in a direction away from the leading edge (22).