Connecting Element with Integrated Weighing Unit for Load Hook Suspension
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Solution Overview
Problem
Existing load systems for hoist equipment, such as crane systems, lack a straightforward method to integrate a weighing unit without significant effort or loss of lifting height, as current solutions either require replacing the entire load-carrying device or alter the hook position, disrupting the intended lifting height.
Innovation Solution
A connecting element with a recess for the load hook, incorporating a weighing unit, including strain sensors and an amplifier sensor, that can be easily swapped into existing systems, maintaining the same external geometry and allowing for precise weight measurement without complex conversions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a weighing unit is integrated into the load system, then weight measurement capability is improved, but device complexity increases
Solution Approach 1:
The weighing unit is merged with the connecting element by integrating strain sensors directly into the connecting element structure. The strain sensors are embedded in recesses or cavities of the connecting element, combining the structural function of the connecting element with the measurement function of the weighing unit, thereby adding weight measurement capability without significantly increasing overall device complexity
Solution Approach 2:
The connecting element is designed to serve multiple functions: it provides structural connection between the load hook and load receiving device, maintains standardized geometry for interoperability, and simultaneously functions as a weighing unit through integrated strain sensors. This multi-functionality allows a single component to replace what would traditionally require separate elements
2Measurement precision
If a weighing unit is added to the load system, then weight measurement capability is improved, but ease of manufacture deteriorates
Solution Approach 1:
The connecting element is designed with segmented features including recesses or cavities that accommodate the strain sensors. These recesses are integrated into the manufacturing process of the connecting element, allowing the weighing unit to be built-in during standard manufacturing rather than requiring post-manufacturing assembly, thus maintaining ease of manufacture while adding measurement capability
Solution Approach 2:
The weighing unit is merged with the connecting element during the same manufacturing process. The strain sensors are installed in recesses that are part of the connecting element's standard geometry, allowing both components to be manufactured and assembled together as a single unit, simplifying the overall manufacturing process
3Measurement precision
If conventional connecting elements are replaced with weighing-integrated versions, then weight measurement capability is improved, but loss of time increases
Solution Approach 1:
The connecting element with integrated weighing unit maintains the same external geometry and standardized dimensions as conventional connecting elements. This universality allows it to be directly swapped into existing load systems without requiring modifications to the load hook, load receiving device, or supporting infrastructure, enabling quick replacement while adding weight measurement capability
Solution Approach 2:
The connecting element is designed as a replaceable component that can be quickly swapped in and out of the load system. The standardized interface and geometry enable dynamic replacement during operation or maintenance without disrupting the overall system architecture, allowing flexible deployment of weighing capability where needed
4Measurement precision
If the connecting element geometry is modified to accommodate weighing sensors, then weight measurement capability is improved, but adaptability deteriorates
Solution Approach 1:
The connecting element maintains its standardized external geometry and dimensions according to DIN 15412, preserving adaptability with existing load systems. The weighing sensors are integrated into local features such as recesses or cavities that do not alter the overall shape or connection interfaces, allowing the element to remain compatible with standard load hooks and receiving devices while adding measurement functionality
Solution Approach 2:
The connecting element is designed to universally interface with standard load system components while simultaneously providing weighing capability. The standardized geometry ensures compatibility across different load hook sizes and types, and the integrated strain sensors provide universal weight measurement functionality, making the element adaptable to various applications without requiring custom modifications
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 the simple integration of a weighing unit into conventional load systems, maintaining the original lifting height and operational efficiency, with accurate weight measurement through strain sensors and amplifier sensors, enhancing the overall quality of weight determination.
Implementation Method 1
the weighing unit comprises at least one strain sensor
Implementation Method 2
the weighing unit comprises an amplifier sensor coupled to each strain sensor
Data Source
Figure 1
Figure 2a~2b
AI summary
The invention relates to a connecting element (1) for connecting a load hook (2) to a load hook suspension (3) for a load-bearing device (4) of a lifting device, having a recess (5) for inserting and securing a load hook (2), wherein the connecting element (1) comprises a weighing unit (6) for weighing a load that can be suspended from the load hook (2) and the connecting element (1) comprises a crossbeam with geometric dimensions of a standard crossbeam according to DIN 15412. In this way, a conventional load system of a lifting device can be easily and quickly extended by adding a weighing unit (6) as needed, without any loss of lifting height.