Self-Contained Hydraulic Jack Assembly for Portable Pin Pulling
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Solution Overview
Problem
Existing hydraulic and pneumatic piston-cylinder units require separate motor-driven pumps and hoses, necessitating transport and access to electrical power, making them cumbersome and limiting their portability and ease of use, especially for tasks like removing pins from recesses.
Innovation Solution
A self-contained cylinder assembly with an integrated onboard power unit, including a pump, motor, and battery pack, allowing for portable operation without external power sources, and adaptable for both pin pulling and load lifting tasks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate motor-driven pumps and hoses are used, then hydraulic power can be supplied to the piston-cylinder unit, but portability and ease of use are reduced due to the need for external power sources and equipment
Solution Approach 1:
The patent integrates the motor, pump, and battery pack into a single onboard power unit that is directly coupled to the piston-cylinder unit. This merging eliminates the need for separate external power sources and hoses, thereby improving portability while maintaining the necessary hydraulic power supply capability.
Solution Approach 2:
The onboard power unit serves multiple functions: the battery pack provides electrical power, the motor converts electrical energy to mechanical rotation, and the pump converts rotational motion into hydraulic pressure. This multi-functional integration allows a single device to replace multiple separate components, enhancing ease of operation.
2Power
If external power sources are required, then the piston-cylinder unit can operate with sufficient power, but access to electrical power is limited and the system becomes cumbersome
Solution Approach 1:
The piston-cylinder unit carries its own power source (battery pack) and power generation components (motor and pump) onboard. This self-service capability allows the system to generate and store its own hydraulic power without requiring external electrical infrastructure, thereby improving operational flexibility and adaptability to various work environments.
3Adaptability or versatility
If onboard power unit is integrated, then portability and versatility are improved, but the device weight and size increase
Solution Approach 1:
The onboard power unit is designed as a modular assembly with distinct components (battery pack, motor, pump) that can be independently selected and configured. This segmentation allows for optimization of each component's weight and performance characteristics, enabling the overall system to achieve multi-functionality while minimizing total weight through careful component selection and sizing.
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 efficient and portable operation of piston-cylinder units for pin removal and load lifting, reducing the need for external equipment and power sources, enhancing usability and versatility.
Implementation Method 1
a power source supported by the housing and operable to supply power to the motor
Implementation Method 2
a motor supported within the housing and operable to power the pump
Implementation Method 3
a pump supported within the housing... operable to supply hydraulic fluid to the cylinder to move the piston
Data Source
AI summary
A cylinder assembly having a housing, a pump supported within the housing, a motor supported within the housing and operable to power the pump, and a power source supported by the housing and operable to supply power to the motor. A cylinder has a first end, an opposite second end, and a sidewall extending therebetween. A piston is movably supported by the cylinder, the pump being operable to supply hydraulic fluid to the cylinder to move the piston relative to the cylinder at least from a retracted position to an advanced position. A frame is coupled to the sidewall of the cylinder and supporting the pump and the motor.