Tractor Headlight Optical Axis Adjustment Mechanism
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Solution Overview
Problem
Existing tractors lack an efficient mechanism for adjusting the optical axis of headlights, making it difficult to achieve optimal lighting configurations for various operating conditions.
Innovation Solution
A tractor design featuring an optical axis adjusting mechanism that allows for easy adjustment of the headlight's optical axis by varying the attaching angles of the headlight relative to the attaching frame in both vertical and left/right directions, using a screw-type fixing tool and an urging member to maintain the headlight's posture, and allowing external access through a detachable headlight cover.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the optical axis adjusting mechanism is located inside the hood, then the headlight is protected from external damage, but the adjustment operation becomes difficult and time-consuming
Solution Approach 1:
The hood is segmented into a removable cover portion and a fixed body portion. The cover can be detached to provide access to the optical axis adjusting mechanism, while the fixed body maintains headlight protection. This segmentation allows the system to switch between protected state (cover attached) and accessible state (cover removed) for adjustment operations.
Solution Approach 2:
The removable cover acts as an intermediary element between the headlight protection function and the adjustment accessibility function. When attached, it provides protection; when removed, it enables access to the adjusting mechanism. This intermediary component resolves the contradiction by providing both functions at different operational states.
2Stability of the object's composition
If the headlight is firmly fixed to the attaching frame, then the headlight position is stable, but the optical axis adjustment becomes difficult
Solution Approach 1:
The fixing tool incorporates an adjustable fastening mechanism that can dynamically change between a loose state (enabling adjustment) and a tight state (providing stability). The fastening member can be rotated or moved to adjust the clamping force, allowing the system to transition between flexibility for adjustment and rigidity for stable operation.
Solution Approach 2:
The fastening force parameter of the fixing tool is made variable. By changing the tightening parameter of the fixing mechanism, the system can switch between allowing movement (for adjustment) and preventing movement (for stability). This parameter change enables the same fixing structure to serve both adjustment and stabilization functions.
3Stability of the object's composition
If the headlight is tightly fastened to the attaching frame, then the headlight position is stable, but the adjustment operation becomes difficult and time-consuming
Solution Approach 1:
The fixing tool uses a dynamic fastening mechanism that can be quickly switched between loose and tight states. The adjustable fastening member allows rapid transition from a state enabling easy adjustment to a state providing stable fixation, minimizing the time spent in the adjustment phase while maintaining stability during operation.
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
Enables easy and precise adjustment of the headlight's optical axis, improving lighting readiness and adaptability to different operating conditions without requiring complex internal access.
Implementation Method 1
an urging member fitted on a portion of the fixing tool between the headlight and the attaching frame
Data Source
Figure 1
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AI summary
A tractor includes a vehicle body, a hood (3) provided at a front portion of the vehicle body, a headlight (22) provided at a front portion of the hood (3), an optical axis adjusting mechanism (46) for adjusting an optical axis of the headlight (22), and a headlight cover (44) detachably attached to a corresponding opening portion (3c) of the hood (3) and configured to cover the headlight (22). The optical axis adjusting mechanism (46) is operable through the opening portion (3c) from the outside of the hood (3) when the headlight cover (44) is detached from the opening portion (3c).