Submersible Pump Lifting Claw with Deformable Parallelogram
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Solution Overview
Problem
Existing devices for lifting heavy submersible pumps in submerged installations lack safety, ease of handling, adaptability, and cost-effectiveness, while also requiring significant operator intervention and failing to ensure robust mechanical operation.
Innovation Solution
A device featuring a claw with articulated hooks attached to a deformable parallelogram, a safety pawl for secure hook operation, and a telescopic arm with rolling elements for improved handling and adaptability, manufactured in stainless steel for durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a robust locking mechanism is used to ensure safety, then reliability is improved, but device complexity increases
Solution Approach 1:
The hooks are pre-configured with articulated joints and locking surfaces that automatically engage when the deformable parallelogram is actuated. The pawl is pre-positioned to engage with the ratchet teeth, creating a automatic safety mechanism that locks the hooks in place without requiring additional complex locking components.
Solution Approach 2:
The deformable parallelogram serves multiple functions: it acts as the structural framework, the actuating mechanism for closing hooks, and the element that triggers the pawl-ratchet locking system. This self-service approach eliminates the need for separate actuating mechanisms, reducing overall device complexity while maintaining robust safety functionality.
2Ease of manufacture
If manual operation is used for handling, then ease of manufacture is improved, but operator intervention increases
Solution Approach 1:
The patent replaces complex mechanical control systems with a streamlined mechanical advantage system. The deformable parallelogram converts small manual forces applied at one point into large forces that simultaneously close both hooks and engage the locking mechanism. This substitution of complex control with simple mechanical leverage reduces operator intervention while maintaining ease of manufacture.
3Manufacturing precision
If fixed-length arms are used, then manufacturing precision is improved, but adaptability decreases
Solution Approach 1:
The patent employs a telescopic arm with adjustable length that can be configured for different pump sizes and installation depths. The deformable parallelogram provides dynamic adjustment capability, allowing the hooks to adapt their position and orientation based on the load characteristics. This dynamic design maintains manufacturing precision through standardized components while achieving adaptability through adjustable configurations.
4Strength
If heavy-duty components are used to withstand high loads, then strength is improved, but weight increases
Solution Approach 1:
The patent utilizes the deformable parallelogram to change the mechanical parameters of the system. By altering the geometry and configuration of the parallelogram links, the system can distribute loads more efficiently across the components. This allows the use of lighter materials and smaller cross-sections while maintaining the same load-bearing capacity, thereby reducing overall weight without compromising strength.
Data Source
Figure 1
Figure 2~3
AI summary
The invention relates to a device for lifting submersible pumps, characterized in that it comprises: - a claw (5) provided with two hooks (1) with an arched base arranged facing each another, - a deformable parallelogram (2) provided with a handle (3) for hooking a pulley block, and a pawl (4) which can actuate the closing or opening of the hooks (1) by means of the release or retention of a lock acting on the deformable parallelogram (2), where the hooks (1) are attached, at the top, to the deformable parallelogram (2) and where the claw (5) and the deformable parallelogram (2) can be slid together with respect to a supporting structure (9).