Hydraulic Puller Device with Adjustable Jaw Guides
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing puller devices lack flexibility in pull strokes and often experience jaw springback, limiting their effectiveness in removing bearings, gears, wheels, and pulleys from shafts and axles, and do not offer adjustable jaw guides for varying workpiece sizes.
Innovation Solution
A hydraulic puller device with a mobile base assembly, adjustable jaw guides, and a control assembly in fluid communication with the jaw and press assemblies, featuring hydraulic cylinders for precise control and flexibility in pull strokes up to 48 inches, preventing jaw springback through a combination of jaw members with laterally-curved portions and adjustable jaw guides.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing puller devices are used, then basic pulling function is provided, but flexibility in pull strokes is limited and jaw springback occurs
Solution Approach 1:
The patent implements adjustable jaw guides that can be repositioned along the jaw members to accommodate different workpiece sizes and pull stroke requirements. This dynamic adjustability resolves the contradiction by allowing the device to adapt to varying stroke lengths while the hydraulic locking mechanism simultaneously prevents jaw springback through positive engagement.
Solution Approach 2:
The patent replaces traditional mechanical linkage systems with a hydraulic control system that provides precise control over jaw movement and pull stroke length. The hydraulic cylinders with adjustable strokes eliminate jaw springback through fluid pressure locking while enabling flexible adjustment of pull distances, thereby resolving both the adaptability and reliability issues.
2Ease of manufacture
If fixed jaw guides are used, then jaw positioning is simple, but adaptability to varying workpiece sizes is reduced
Solution Approach 1:
The jaw guides are designed with adjustable positioning mechanisms that allow them to be moved along the jaw members and secured at different locations. This dynamic configuration enables the same device to handle various workpiece sizes while maintaining relatively simple construction through the use of standardized adjustment components.
3Ease of operation
If traditional puller mechanisms are used, then basic functionality is achieved, but precision control over pull stroke is limited
Solution Approach 1:
The patent employs hydraulic cylinders with adjustable stroke lengths to control jaw movement, replacing traditional mechanical linkages. This hydraulic system provides both ease of operation through simple valve control and high precision in pull stroke accuracy through fluid pressure control and adjustable cylinder extensions, resolving the contradiction between operational simplicity and precision control.
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
The hydraulic puller device provides flexible pull strokes and prevents jaw springback, enabling secure removal of press-fitted workpieces with adjustable jaw positioning, enhancing the removal efficiency of bearings, gears, wheels, and pulleys from various machine parts.
Implementation Method 1
a control assembly being in fluid communication with the base assembly, the jaw assembly and the press assembly
Implementation Method 2
a combination of jaw members with laterally-curved portions and adjustable jaw guides preventing jaw springback
Data Source
AI summary
A hydraulic puller device for pulling bearings, gears, wheels and pulleys from objects such as shafts and axles and other machine parts. The hydraulic puller device includes a mobile base assembly, a jaw assembly being mounted to the base assembly and including a plurality of jaw members, a press assembly being mounted to the base assembly for urging against an object to facilitate the removal of a press fitted work piece, and a control assembly being in fluid communication with the base assembly, the jaw assembly and the ram assembly.