Self-moving Tunnel Support Canopy with Telescopic Beam
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Solution Overview
Problem
Conventional tunnel support devices and methods are time-consuming, manpower-intensive, and pose safety risks, lacking self-moving functionality, which hampers tunnel construction progress and safety.
Innovation Solution
A self-moving tunnel support canopy comprising a front arch frame, rear arch frame, forward jack, and support jack, with a spring board and telescopic beam structure that allows for alternating longitudinal beams to provide continuous support and enable the canopy to move forward, supporting the arch top and side walls effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional support devices and methods are used, then the tunnel arch and side walls can be supported, but the construction process is time-consuming and manpower-intensive
Solution Approach 1:
The support canopy is designed with movable components including a telescopic beam that can extend and retract, and alternating longitudinal beams that enable the canopy to move forward step by step. This dynamic structure allows the support system to advance with the excavation face automatically, eliminating the need for repeated manual installation and reducing construction time while maintaining continuous support coverage.
Solution Approach 2:
The support canopy is positioned in advance ahead of the excavation face to provide preliminary support to the tunnel arch and side walls before blasting or excavation occurs. This preliminary positioning ensures that support is already in place when needed, preventing rock collapse and eliminating the need for subsequent support installation, thereby improving both safety and construction efficiency.
2Reliability
If conventional support devices are used, then support coverage can be achieved, but safety incidents occur due to poor support methods
Solution Approach 1:
The support canopy is equipped with a self-moving mechanism that allows it to advance automatically without requiring manual intervention. The alternating longitudinal beams and telescopic beam enable the canopy to move forward on its own as the excavation progresses, eliminating safety risks associated with workers manually positioning support structures in hazardous zones near the excavation face.
Solution Approach 2:
The telescopic beam acts as an intermediary mechanism between the fixed support structure and the moving excavation face. It transfers the support function from a static to a dynamic system, allowing the canopy to maintain continuous coverage while advancing safely away from the hazardous blasting or excavation zone.
3Reliability
If manual support installation is used, then support structures can be placed, but the process requires significant manual labor
Solution Approach 1:
The support canopy incorporates a self-propelling mechanism where the telescopic beam extends and contracts to move the entire structure forward automatically. The alternating longitudinal beams are designed to alternate between extending and retracting, enabling the canopy to advance without any manual labor for positioning, thereby eliminating the labor-intensive nature of conventional support installation while ensuring proper support placement.
4Device complexity
If the support device lacks self-moving function, then结构简单 can be maintained, but construction progress is hampered
Solution Approach 1:
The support canopy integrates a telescopic beam and alternating longitudinal beams that create a dynamic self-moving capability. The telescopic beam can extend and retract, while the alternating beams sequentially move to propel the entire canopy forward. This dynamic design adds only moderate structural complexity but enables automatic advancement with the excavation face, significantly improving construction progress without requiring complex external propulsion systems.
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
The self-moving tunnel support canopy ensures uninterrupted and secure support to the tunnel arch and side walls, enhancing safety and efficiency by reducing manual labor and preventing collapse, while maintaining the traditional step method construction process.
Implementation Method 1
a forward jack, disposed between the front arch frame and the rear arch frame
Implementation Method 2
a support jack disposed at a lower part of the front arch frame and a support jack disposed at a lower part of the rear arch frame
Data Source
Figure 1~2
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AI summary
The present invention discloses a self-moving tunnel support canopy, comprising a front arch frame, a rear arch frame, a forward jack, and a support jack; wherein: the front arch frame comprises more than three front longitudinal beams and more than three front arch beams, all the front longitudinal beams being longitudinally disposed along arch upper surfaces of the front arch beams, each of the front longitudinal beams being coupled to all the front arch beams, the support jack being disposed at a lower part of the front arch frame; the rear arch frame comprises more than three rear longitudinal beams and more than three rear arch beams, all the rear longitudinal beams being longitudinally disposed along arch upper surfaces of the rear arch beams, each of the rear longitudinal beams being coupled to all the rear arch beams, the support jack being disposed at a lower part of the rear arch frame, the front longitudinal beams and the rear arch beams being spacedly disposed, and a spacing being configured between the front arch beam and a front-adjacent rear arch beam; and one end of the forward jack is coupled to the front arch frame, and the other end of the forward jack is coupled to the rear arch frame, the front arch beam and the rear arch beam being both arch-shaped beams. The device according to the present invention is time and manpower saving, and safe and reliable.