Hoist Cable Clamp Extraction for Tight Space Maintenance
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Solution Overview
Problem
Existing hoists face difficulties in maintaining cable security due to the need for manual operation in tight spaces, where other components like brakes and gear housings are closely arranged, leading to challenges in replacing or shortening cables to prevent wear and potential breaks.
Innovation Solution
A hoist design featuring a cable-accommodating block and cable clamp system where the cable clamp can be secured and removed outside the hoist, utilizing a conical clamping mechanism with self-locking cone rings and an installation device that allows for hydraulic, mechanical, or electric actuation to establish a force-locking connection, reducing the need for manual handling and enhancing safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the cable-securing device is located on the flanged wheel for compact design, then the hoist structure is more compact, but the cable clamp cannot be easily replaced or installed due to limited working space
Solution Approach 1:
The cable clamp is extracted from the confined space on the flanged wheel and positioned in a location that is accessible for installation and maintenance operations, while still maintaining the compact overall structure of the hoist
Solution Approach 2:
The cable-accommodating block is pre-equipped with the cable clamp and cable in a prepared state, allowing the entire assembly to be installed as a unit rather than requiring complex assembly operations in tight spaces
2Device complexity
If manual operation is required in tight spaces for cable maintenance, then the hoist structure remains simple, but the operation becomes difficult and time-consuming
Solution Approach 1:
The cable-accommodating block is designed to facilitate self-service maintenance operations, where the cable clamp can be easily removed and reinstalled without requiring complex tools or extensive disassembly of the hoist structure
3Reliability
If the cable clamp is securely fixed on the cable under high tension, then the cable security is improved, but the installation and removal operations become more difficult
Solution Approach 1:
The cable clamp employs a dynamic clamping mechanism that can be easily applied during installation but automatically maintains a secure, high-force grip once the cable is under tension, leveraging the operational conditions to enhance security
Solution Approach 2:
The clamping force parameters are designed to be easily adjustable during installation but automatically optimize to high security levels when the cable is subjected to operational tension loads
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
Facilitates easier and safer installation or removal of the cable clamp, reducing the risk of cable wear and breakage by allowing operations to be performed in a more spacious area, thereby improving the reliability and efficiency of cable management.
Implementation Method 1
The cable clamp (24) is configured to be affixed to the cable (3). The abutment surface (26) of the cable-accommodating block is configured to be contacted with the counterpart abutment surface (25) of the cable clamp under an effect of a tensile force.
Implementation Method 2
The cable-accommodating block (23) is affixed to the flanged wheel (11) in a direction of tension of the cable (3) and is configured to have the cable be passed there-through
Data Source
AI summary
A hoist includes a cable configured to lower and to raise a load, and a drum arranged to be rotatably seated about an axis of rotation and configured to wind up and to unwind the cable. The drum comprises a flanged wheel which comprises a securing device configured to secure the cable. The securing device comprises a cable-accommodating block comprising an abutment surface, and a cable clamp. The cable-accommodating block is affixed to the flanged wheel in a direction of tension of the cable and is configured to have the cable be passed there-through. The cable clamp comprises a counterpart abutment surface. The cable clamp is configured to be affixed to the cable. The abutment surface of the cable-accommodating block is configured to be contacted with the counterpart abutment surface of the cable clamp under an effect of a tensile force.