Telescopic Lifting Tower Load Measurement Using Spring Compression
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Solution Overview
Problem
Existing lifting towers for lighting and sound elements lack a simple and effective mechanism to prevent overloading, leading to potential structural damage and accidents due to the inability to easily detect when the maximum load capacity is exceeded.
Innovation Solution
A mechanical load measurement system using a telescopic structure with a spring and graduated scale to visually indicate when the load exceeds safe limits, allowing operators to adjust loading before lifting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a lifting mechanism is used to reduce torque required for actuation, then ease of operation is improved, but the ability to detect load weight is worsened
Solution Approach 1:
A spring mechanism serves as an intermediary element between the load and the operator. The spring compresses under the weight of the load, providing a mechanical indication of load weight through the degree of compression, which can be read against a graduated scale. This intermediary mechanism allows the operator to detect load weight without directly feeling the torque differences.
Solution Approach 2:
The patent replaces the reliance on mechanical torque sensation with a visual mechanical indication system. Instead of relying on the operator's perception of torque changes, the spring-based measurement system provides a visual readout on a graduated scale, substituting mechanical sensation with visual measurement.
2Measurement precision
If complex electronic systems with load cells are used to measure load weight, then measurement precision is improved, but device complexity and reliability are worsened
Solution Approach 1:
The patent extracts the electronic components (load cells, power supplies, electronic displays) from the system and replaces them with a pure mechanical spring-based measurement mechanism. This extraction simplifies the system by removing complex electronic subsystems while retaining the essential function of load weight measurement through a straightforward mechanical spring and graduated scale.
Solution Approach 2:
The spring-based mechanical system uses simple, inexpensive mechanical components that are more reliable in demanding working conditions. The spring and graduated scale constitute a simple, robust measurement system that does not require complex electronics or power supplies, making it more suitable for harsh environments where electronic systems might fail.
3Reliability
If operators manually weigh each piece before assembly, then safety is improved, but loss of time is worsened
Solution Approach 1:
The spring-based measurement system provides real-time feedback during the loading process itself, eliminating the need for separate preliminary weighing operations. As loads are added to the tower, the spring compresses and the graduated scale immediately indicates the total weight, allowing operators to verify load capacity during the assembly process rather than before it.
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
Prevents overloading by providing a straightforward visual indication of load limits, enhancing safety and preventing structural damage and accidents without requiring complex electronic systems.
Implementation Method 1
a spring (6) working under compression, on which the second section (2b) of the tower rests
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention relates to a system comprising a vertical telescopic structure formed by at least a first section (2a) and a movable second section (2b) guided within the first section (2a). The second section of the tower (2) rests on a spring (6). A first end of the spring is supported on a fixed base (7) solidly connected to the first section of the tower, while a second end of the spring is supported on a plate (14) solidly connected to the second section of the tower. The system also includes a control element (8) solidly connected to the second section of the tower, and a graduated scale (10) located on the exterior surface of the first section of the tower. During loading, the second section moves downwards against the resistance of the spring, the control element moving in parallel from an initial position to a final position, both positions being controlled using the scale.