Hydraulic Stake Puller Segmentation for Rapid Extraction
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Solution Overview
Problem
Existing devices for removing tent stakes from the ground are inefficient, particularly for larger tents, as they are either labor-intensive, difficult to maneuver, or too large and expensive for smaller jobs, and most are designed to work optimally with stakes perpendicular to the ground.
Innovation Solution
A hydraulic device with a motor-connected piston system that allows for two-stroke extraction of tent stakes, featuring adjustable angle capability, a safety shield, and a unique rotational handle system to reduce user strain, designed to accommodate common tent stake sizes and facilitate rapid removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If hydraulic pullers are used to extract stakes, then extraction speed is improved, but device weight and maneuverability deteriorate
Solution Approach 1:
The device is divided into a lightweight manual positioning component and a separate hydraulic extraction component. The user manually positions the stake while the hydraulic system provides the extraction force, separating the functions of positioning and extraction to optimize each independently.
Solution Approach 2:
A hydraulic cylinder acts as an intermediary between the user's manual input and the stake extraction process. The hydraulic fluid transmits force efficiently, allowing a small input force to generate large extraction forces without requiring a heavy mechanical system.
2Ease of operation
If traditional jack-type pullers are used, then ease of operation at angles is improved, but extraction speed and labor intensity worsen
Solution Approach 1:
The device incorporates adjustable angle mechanisms that allow the hydraulic cylinder to operate at various angles relative to the stake. This dynamic adjustment capability maintains ease of operation at different angles while the hydraulic system provides rapid extraction speed.
Solution Approach 2:
The device allows changing the operational parameters including the angle of the hydraulic cylinder relative to the stake. By adjusting these parameters, the system can adapt to different stake orientations while maintaining high extraction speed through hydraulic force.
3Force
If heavy equipment is used for stake extraction, then extraction capability is improved, but device size and cost worsen
Solution Approach 1:
The device uses a hydraulic system to generate large extraction forces in a compact package. Hydraulic fluid under pressure can produce forces comparable to heavy equipment but within a much smaller and lighter device footprint, reducing both size and cost.
Solution Approach 2:
The invention replaces traditional mechanical leverage systems (such as long levers or screw mechanisms) with a hydraulic system. This substitution allows for more efficient force multiplication without the mechanical complexity and size associated with traditional mechanical systems.
4Productivity
If single-stroke extraction is attempted, then extraction speed is improved, but device complexity and stroke length requirements worsen
Solution Approach 1:
The device is designed for two-stroke operation rather than attempting single-stroke extraction. The hydraulic cylinder performs one stroke to extract the upper portion of the stake, then retracts and repeats the process for the lower portion. This periodic action simplifies the device design by eliminating the need for excessively long stroke mechanisms while maintaining efficient extraction speed.
Data Source
AI summary
A tool for extracting tent stakes from the ground is disclosed. The tool has a portion that houses the motor and hydraulic fluid tank, and a hydraulic cylinder portion the user holds against a tent stake and operates to pull the tent stake. Hydraulic hoses connect the two portions. Separating the motor from the hydraulic cylinder allows the user to manipulate just the portion performing work on the tent stake without having to also lift or stabilize the larger and heavier motor portion. Rotating a handle causes the hydraulic cylinder to extend or retract. A hand guard may be present to prevent accidental crush injuries. The tool is designed to fully extract a stake in two strokes of the hydraulic cylinder.