Cage Jamming Buffer Mechanism for Ultra-Deep Shaft Hoisting
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Solution Overview
Problem
In large-tonnage hoisting systems of ultra-deep shafts, existing solutions for cage jamming failures, such as sensor-based detection and alarm systems, suffer from low accuracy and require frequent maintenance, leading to potential wire rope breakage and accidents.
Innovation Solution
A device with automatic wire rope tension balancing mechanisms and end cage jamming buffer mechanisms, featuring buffer and fixing modules with buffer bolts and blocks, which buffer the wire rope by releasing a controlled length when torque exceeds the shearing strength of buffer bolts, preventing rope breakage during jamming events.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sensor-based detection and alarm systems are used for cage jamming failures, then operator awareness is improved, but measurement precision and reliability are insufficient leading to potential wire rope breakage
Solution Approach 1:
The patent replaces sensor-based detection with a mechanical buffer mechanism that directly responds to wire rope tension through physical interaction. The buffer mechanism uses mechanical components (buffer blocks, stop blocks, bolts) to detect and respond to cage jamming forces, eliminating reliance on sensors with low measurement precision.
Solution Approach 2:
The patent implements a buffer mechanism that is pre-configured to absorb excess tension forces before they can break the wire rope. The buffer blocks and stop blocks are positioned in advance to provide cushioning protection, ensuring the wire rope is not broken even when cage jamming occurs.
2Reliability
If automatic wire rope tension balancing mechanisms with buffer mechanisms are implemented, then wire rope protection is improved, but device complexity increases
Solution Approach 1:
The buffer mechanism is divided into modular segments including buffer blocks, stop blocks, bolts, and bearing pedestals that can be independently positioned and adjusted. This segmentation allows the complex protection function to be achieved through simple, discrete components rather than a monolithic complex structure.
Solution Approach 2:
The buffer mechanism operates automatically through mechanical self-activation. When wire rope tension exceeds the shear strength of the bolts, the buffer blocks are automatically released and move to absorb the excess force, eliminating the need for external control systems or complex actuation mechanisms.
3Reliability
If buffer blocks and stop blocks are used to provide buffer distance, then wire rope breakage is prevented, but adjustment convenience is reduced
Solution Approach 1:
The buffer mechanism incorporates adjustable components that allow the buffer distance to be dynamically configured. The bearing pedestals and mounting positions can be adjusted to change the initial position of buffer blocks and stop blocks, enabling adaptation to different operating conditions and wire rope tension requirements.
Solution Approach 2:
The mechanism allows change of critical parameters such as buffer distance, bolt shear strength, and block positioning through simple adjustments. By modifying these parameters, the system can be tuned to provide appropriate protection for different cage weights, hoisting speeds, and operational conditions without redesigning the entire mechanism.
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
Ensures the wire rope is not broken during cage jamming failures by providing a buffer distance, simplifying the structure and making adjustments quick and convenient, thereby preventing accidents and improving production efficiency.
Implementation Method 1
When the torque corresponding to the tensile force of the wire rope is greater than the shearing strength of the buffer bolts, it is regarded as cage jamming
Data Source
AI summary
A device for cage jamming buffer of large-tonnage hoisting system of ultra-deep shaft is provided. End cage jamming buffer mechanisms are added at both ends of an automatic wire rope tension balancing mechanism, wherein the end cage jamming buffer mechanisms include an end buffer module and an end fixing module, and the end buffer module and the end fixing module are respectively mounted on shafts of the automatic wire rope tension balancing mechanisms at two ends. The end buffer module mainly consists of a buffer bearing pedestal, a limit block, a buffer block, and a stop block sequentially mounted on the shaft of the automatic wire rope tension balancing mechanism at one end. The end fixing module mainly consists of a fixing bearing pedestal and a fixing block mounted on the shaft, wherein the fixing bearing pedestal is connected to a transmission gear by an adjusting bolt.