Swivelable Adapter for Skid Steer Loaders Manual Rotation
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Solution Overview
Problem
Existing skid steer loader adapters lack the ability to manually rotate work tools 90 degrees from a horizontal position to a vertical position, limiting their effectiveness in grasping downed trees at various angles, and often require hydraulic systems that are not universally compatible across different skid steer loader models.
Innovation Solution
A swivelable adapter device comprising sandwiched metal plates with a barrel within a barrel assembly, allowing manual rotation of the work tool plate 90 degrees using gravity, without the need for hydraulics, and featuring a locking latch system for secure positioning at desired angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If hydraulic systems are used to rotate the work tool plate, then rotational power and speed are improved, but compatibility across different skid steer loader models deteriorates due to varying hydraulic connector pins
Solution Approach 1:
The patent removes the hydraulic system entirely from the rotation mechanism. Instead of using hydraulic motors or cylinders to rotate the work tool plate, the invention extracts the hydraulic dependency and replaces it with a manual rotation system using a handle and gear mechanism, thereby achieving universal compatibility across all skid steer loader models regardless of their hydraulic system variations
Solution Approach 2:
The adapter device is designed with universal compatibility to work with any skid steer loader model. By eliminating model-specific hydraulic connectors and using a standardized mounting interface with manual operation, the device achieves multi-functionality across different equipment platforms without requiring model-specific adaptations
2Ease of operation
If the rotation mechanism is simplified to manual operation, then compatibility and ease of operation are improved, but rotational speed and power deteriorate
Solution Approach 1:
The system provides dynamic operation modes allowing the operator to choose between manual rotation using the handle for precision positioning, or assisted rotation by engaging the skid steer loader's hydraulic system for faster repositioning. This dynamic flexibility addresses both the need for ease of manual operation and the desire for faster rotational speed when needed
Solution Approach 2:
The adapter device acts as an intermediary between the skid steer loader and the work tool, providing a hybrid rotation mechanism that can interface with either manual operation or the loader's existing hydraulic system. This intermediary approach allows the simple manual mechanism to be enhanced by external hydraulic power when needed, without compromising the fundamental ease of manual operation
3Device complexity
If adapters are designed to rotate only a few degrees from horizontal, then device complexity is reduced, but the ability to grasp downed trees at various angles deteriorates
Solution Approach 1:
The adapter incorporates a dynamically adjustable rotation mechanism that can be operated manually through a range of angles from horizontal to vertical positions. The system maintains relative structural simplicity while enabling full angular adjustment through a handle-driven gear mechanism, allowing the work tool plate to be positioned at any angle needed for grasping downed trees
Solution Approach 2:
The adapter adds rotational freedom in a new dimension by enabling the work tool plate to rotate vertically as well as horizontally. This dimensional expansion allows the tool to reach objects at various angles including overhead positions, significantly increasing adaptability while maintaining a relatively simple planar rotation mechanism
4Adaptability or versatility
If a full 90-degree rotation range is implemented, then the ability to grasp leaning trees is improved, but device complexity and structural requirements worsen
Solution Approach 1:
The adapter uses a dynamic gear-based rotation mechanism that provides full 90-degree rotational capability through a compact design. The handle-driven system engages with gear teeth on the work tool plate, allowing controlled rotation through the full angular range while maintaining a relatively simple mechanical structure without requiring complex hydraulic cylinders or multi-component actuation systems
Solution Approach 2:
The adapter employs a nested barrel-within-a-barrel assembly where the inner barrel rotates within the outer barrel. This nested configuration allows the full 90-degree rotation mechanism to be compact and integrated within the adapter structure, reducing overall device complexity while maintaining the required rotation range for grasping leaning trees
Data Source
AI summary
A swivelable adapter device for use with skid steer loaders consists of a mounting plate and a swiveling work tool plate for holding, rotating, and positioning various skid steer attachments. Rotation about a longitudinal axis of skid steer arms is accomplished using a barrel within a barrel assembly allowing work tool plate to be positioned from angles between horizontal and vertical. A mounting plate is attached to skid steer arms and is rigidly affixed to an inner barrel. An outer barrel with a notch plate and a work tool plate slides over a greased inner barrel. Swivel operation of the work tool plate is accomplished by hand eliminating the need for hydraulic systems. Once positioned, the work tool plate is locked to a notch plate using a locking latch. The swivelable adapter device is reinforced with metal plates to handle torsion forces created by heavy loads such as trees.