Battery-Powered Hydraulic Torque Tool Merging Drive and Unit
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Solution Overview
Problem
Existing hydraulic torque tools are cumbersome and pose safety risks due to their hose-connected design, requiring external hydraulic units and lacking space efficiency, especially when used in situations with limited access or for small tasks, leading to increased workload and safety concerns.
Innovation Solution
A tool device with a direct, battery-hydraulically operated drive system that forms a compact physical unit, eliminating the need for a hose-connected design, allowing for one-handed operation and easy access to difficult-to-reach areas through a modular and rotatable design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a hose-connected hydraulic torque tool is used, then high torque force can be generated for heavy screw connections, but the device becomes cumbersome and poses safety risks due to the external hydraulic unit and hose connections
Solution Approach 1:
The patent integrates the hydraulic power pack and the torque tool into a single unified device. The hydraulic motor, pump, battery, and control electronics are all housed within the torque tool handle, eliminating the need for separate external hydraulic units and hoses. This merging of previously separate components resolves the contradiction by maintaining high torque capability while dramatically improving operator convenience and safety.
2Stress or pressure
If an external hydraulic power pack is carried, then sufficient hydraulic pressure can be provided, but the weight and space requirements increase significantly
Solution Approach 1:
The hydraulic power pack is merged with the torque tool, with the battery, pump, and motor all integrated into the tool handle. This eliminates the need to carry a separate heavy external power pack while maintaining sufficient hydraulic pressure for high-torque applications.
Solution Approach 2:
The patent uses a battery-powered hydraulic pump to generate high-pressure hydraulic fluid that drives a hydraulic motor. This hydraulic system provides sufficient pressure for high-torque applications while being self-contained within the tool, eliminating the need for external heavy equipment.
3Power
If a hose-connected design is used, then hydraulic power can be transmitted, but the hose creates tripping hazards and reduces accessibility to hard-to-reach locations
Solution Approach 1:
By merging the hydraulic power source with the tool itself, the patent eliminates hoses entirely. The battery-powered hydraulic system is self-contained within the tool handle, removing the tripping hazard and improving safety without compromising power transmission capability.
Solution Approach 2:
The patent extracts and eliminates the hose from the system by integrating the hydraulic power generation and transmission components directly into the tool. This removal of the harmful hose element resolves the safety hazard while maintaining full hydraulic power transmission capability.
4Adaptability or versatility
If adjustment at multiple locations is required, then comprehensive torque application is achieved, but the time and workload increase significantly
Solution Approach 1:
The tool features electronic controls and a digital display that allow the operator to easily adjust and monitor torque settings without requiring manual calibration or complex procedures. This self-service capability speeds up adjustments at multiple locations, improving productivity while maintaining adaptability.
Solution Approach 2:
The patent incorporates electronic controls that allow rapid adjustment of hydraulic pressure and torque parameters between different work locations. The digital display and control mechanisms enable quick parameter changes without time-consuming manual adjustments, thereby improving productivity while maintaining versatility.
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 solution provides a compact, reliable, and safe tool for torque transmission, reducing operator workload and improving safety by eliminating the need for external hydraulic units and hose connections, enabling efficient operation in various applications, including hard-to-reach locations.
Implementation Method 1
designed to be hydraulically driven via a battery-powered hydraulic drive device
Implementation Method 2
hydraulic drive device connectable to the connecting unit
Data Source
Figure 1
Figure 2a~2b
Figure 3
AI summary
The present invention relates to a tool device (100, 200, 300, 400, 500) comprising a tool unit (110, 210, 310, 410, 510) and a connecting unit (120, 220, 320, 420, 520). The connecting unit (120, 220, 320, 420, 520) is, in particular detachably, connected to the tool unit (110, 210, 310, 410, 510) and the tool device (100, 200, 300, 400, 500) is designed to be hydraulically driven via a hydraulic drive device connectable to the connecting unit (120, 220, 320, 420, 520), whereby it defines at least one driven state for the tool device.The tool device (120, 220, 320, 420, 520) is further designed to exert a force in the form of a torque transmission on the external connection point in at least one driven state, via at least temporary, planar contact between the tool unit (110, 210, 310, 410, 510) and an external connection point, in particular in the form of a temporary positive locking between the tool unit (110, 210, 310, 410, 510) and an external connection point. The tool unit (110, 210, 310, 410, 510) and the connecting unit (120, 220, 320, 420, 520) are designed and shaped in such a way that the hydraulic drive device connectable to the connecting unit (120, 220, 320, 420, 520) is a battery-powered hydraulic drive device.The tool unit (110, 210, 310, 410, 510) and the connecting unit (120, 220, 320, 420, 520) are further configured such that the connecting unit (120, 220, 320, 420, 520) can be directly connected to and driven by a battery-powered hydraulic drive device in order to exert force in the form of torque transmission to an external connection point. The invention further relates to a tool arrangement (1, 2, 3, 4, 5), in particular a hand-held, battery-powered hydraulic screwdriver for torque transmission, comprising such a tool arrangement (100, 200, 300, 400, 500) and a battery-powered hydraulic drive device (10, 20, 30, 40, 50).