Tunnel Lining Device With Pressure Roller And Clamping Mechanism
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Solution Overview
Problem
Existing methods for lining tunnel walls or ceilings with protective nets are cumbersome and hazardous for workers due to the difficulty in handling heavy rolls and the lack of precise control over the unwinding and fastening process.
Innovation Solution
A device with a telescopic arm and clamping mechanism allows for controlled unwinding and anchoring of protective net material, using a pressure roller and adjustable clamping jaws to manage the roll and ensure safe, precise handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If workers manually handle heavy rolls of protective net material, then the material can be positioned and unwound, but worker safety is compromised and handling difficulty increases
Solution Approach 1:
The patent introduces a device with a pressure roller and clamping mechanism that acts as an intermediary between the heavy roll and the worker. The pressure roller receives the roll, provides controlled unwinding through rotational movement, and the clamping mechanism secures the roll firmly. This intermediary device eliminates direct worker contact with heavy rolls, resolving the safety hazard while maintaining ease of operation through mechanical assistance.
Solution Approach 2:
The patent replaces manual mechanical handling with a controlled mechanical system. The device uses a pressure roller that can rotate to control unwinding, and a clamping mechanism that mechanically secures the roll. This substitution of manual labor with a controlled mechanical system reduces worker exposure to hazards while maintaining operational efficiency.
2Productivity
If protective net material is unwound and attached manually, then the process can be completed, but the work process is time-consuming and labor-intensive
Solution Approach 1:
The patent enables continuous unwinding of the protective net material through the pressure roller mechanism. As the roller rotates, it continuously feeds out the material without interruption, allowing workers to maintain continuous attachment work. This eliminates the stop-start nature of manual handling and significantly reduces the time required for the lining process, thereby improving productivity.
3Manufacturing precision
If rolls are held without precise control mechanisms, then handling is simpler, but placement precision of protective nets deteriorates
Solution Approach 1:
The pressure roller serves as a precise intermediary control mechanism. By controlling the rotation of the pressure roller, workers can precisely control the amount of material unwound and its placement position. The roller acts as a mediator between the roll and the attachment point, enabling precise placement without requiring complex control systems, thus maintaining simplicity while achieving high precision.
Data Source
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AI summary
In a method for lining tunnel walls or ceilings with protective nets or the like, web-shaped protective net material (8) is unwound from a reel (7) and is fastened to the tunnel walls or ceiling by means of tie bolts. The reel (7) is rotatably arranged. The rotation of the reel (7) about a shaft (30) is controlled in order to unwind the protective net material (8), the shaft (30) being mechanically moved in steps along the tunnel walls or ceiling together with the reel (7). The protective net material (8) unwound in each step is preferably stretched and mechanically fastened. The individuals carrying out said processes are thus not exposed to any direct risk, while the lining process can be accelerated.