Motor Grader Box Frame Integrated Lifter Guide Casting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing motor grader designs face challenges in accurately and easily fixing the lifter guide to the frame, as it requires welding at specific angles and inserting a plate member to fill gaps, making precise positioning difficult.
Innovation Solution
A motor grader with a box-shaped frame featuring integrated side surfaces for the lifter guide, where the lifter guide is coupled to forward and rearward extending frame parts, eliminating the need for external fixing devices and plate members, and utilizing cast metal for enhanced strength and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the lifter guide is welded to the frame at a certain position, then the lifter guide can be fixed to the frame, but improving the positional accuracy of the lifter guide with respect to the frame is difficult
Solution Approach 1:
The lifter guide and bracket are merged into a single integrated component formed as one piece of cast metal. This eliminates the need for separate welding operations to attach the lifter guide to the bracket, thereby improving positional accuracy while maintaining ease of manufacture through a single casting process
Solution Approach 2:
The bracket is designed with predetermined positioning features (such as recesses or guide surfaces) that pre-establish the correct position and orientation of the lifter guide before the final welding or attachment to the frame. This preliminary positioning ensures high positional accuracy is achieved easily during assembly
2Stability of the object's composition
If a plate member is inserted for filling in the gap between the lifter guide and the frame, then the gap can be filled, but easily fixing the lifter guide to the frame is not possible
Solution Approach 1:
The bracket and lifter guide are merged into a single integrated cast component, eliminating the gap between them entirely. This removes the need for plate members to fill gaps while simultaneously simplifying the fixing process to a single attachment operation
Solution Approach 2:
The separate plate member used for filling gaps is extracted from the design by integrating the bracket and lifter guide into one piece. The function of filling the gap is taken out and replaced by the inherent structural integrity of the integrated cast component
3Ease of manufacture
If the lifter guide is welded to the bracket, then the lifter guide can be attached to the frame, but the strength of the attachment is reduced compared to cast metal
Solution Approach 1:
The bracket and lifter guide are merged into a single integrated component formed by casting, creating a monolithic structure with continuous metal grain flow. This eliminates weak weld joints and provides maximum attachment strength while maintaining manufacturing feasibility through standard casting processes
Solution Approach 2:
The integrated bracket-lifter guide assembly is produced as a composite cast structure, potentially incorporating different metal alloys or reinforcement elements within the cast material to optimize both strength and manufacturability for the specific application
Data Source
AI summary
A motor grader includes a frame and a work implement. The frame is box-shaped. The work implement is configured to be supported by the frame. The frame includes a bracket, a first frame part and a second frame part. The bracket has left and right side surfaces with which a lifter guide is formed in an integrated manner. The first frame part is configured to extend forward from a front end part of the bracket and support the work implement. The second frame part is configured to extend rearward from a rear end part of the bracket.