Modular Crane Hook Block with Interchangeable Roller Sets
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Solution Overview
Problem
The existing hook block systems for cranes require multiple variations to accommodate different load-bearing capacities, leading to increased production costs and storage needs due to the necessity of manufacturing and maintaining various specific hook blocks for different applications.
Innovation Solution
A modular hook block design featuring interchangeable roller sets connected via a hook traverse, allowing for flexible combinations of roller sets to accommodate various applications, thereby reducing the need for multiple specific hook blocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple specific hook blocks are manufactured for different load-bearing capacities, then the adaptability to different applications is improved, but the production costs and storage requirements increase
Solution Approach 1:
The hook block is divided into separate modular components: a base unit and interchangeable roller sets. Each roller set is designed as an independent module that can be manufactured separately and then assembled with the base unit. This segmentation allows the same base unit to serve multiple applications by simply changing the roller sets, thereby reducing the need to manufacture multiple complete hook blocks for different load capacities.
Solution Approach 2:
The base unit of the hook block is designed as a universal component that can accommodate different roller sets through standardized mounting interfaces. This universal base unit serves multiple functions by working with various roller sets configured for different load-bearing capacities, eliminating the need to produce separate hook blocks for each application and reducing both production costs and storage requirements.
2Adaptability or versatility
If multiple specific hook blocks are manufactured for different load-bearing capacities, then the adaptability to different applications is improved, but the storage requirements increase
Solution Approach 1:
By segmenting the hook block into a reusable base unit and interchangeable roller sets, the system reduces the total number of complete hook blocks that need to be stored. Instead of storing multiple full-sized hook blocks for different capacities, only the compact roller set modules need to be stored alongside a single base unit, significantly reducing storage volume.
Solution Approach 2:
The roller sets are designed to be compact and can be stored in a nested or stacked arrangement near the base unit. The modular design allows roller sets to be efficiently arranged in limited storage space, and they can be quickly retrieved and exchanged at the usage location, minimizing the storage footprint required for maintaining multiple hook block configurations.
3Ease of manufacture
If interchangeable roller sets are used in a modular design, then the production costs are reduced, but the device complexity increases
Solution Approach 1:
While segmentation into modules does increase assembly steps, it standardizes the interfaces and mounting mechanisms. The base unit incorporates standardized mounting points and the roller sets have corresponding standardized attachment features, which simplifies the assembly process despite the modular nature. This standardization reduces the complexity burden by providing repeatable, straightforward assembly procedures.
Solution Approach 2:
The modular design incorporates dynamic exchangeability, allowing roller sets to be quickly swapped without complex disassembly procedures. The standardized interfaces enable rapid attachment and detachment, and the system is designed to accommodate the dynamic nature of module exchange while maintaining structural integrity during operation.
4Reliability
If roller sets are connected via a hook traverse allowing oscillating movement, then the running behavior differences between winches are compensated, but the device complexity increases
Solution Approach 1:
The hook traverse is designed with oscillating capability that allows it to dynamically adjust its position and orientation in response to differences in winch running behavior. This dynamic movement compensates for variations in rope tension and positioning, maintaining reliable operation. The oscillating mechanism is kept simple through the use of pivot points and flexible connections that naturally accommodate the required movements without complex control systems.
Data Source
AI summary
The invention relates to a hook block for a crane, preferably a mobile crane, comprising a lower part to which the hook is rotatably and tiltably attached, and an upper part in which rollers are mounted over which at least one lifting rope can be reeved. According to the invention, the rollers are grouped into several modularly connectable sets of rollers.