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Address: Sany Supporting Industrial Park, Economic and Technological Development Zone, Loudi City, Hunan Province

SRG312A Arch Support Cart

1. Full Operational Capability: The system is equipped to perform arch support installation for all three tunnel excavation methods—full-face, two-stage, and three-stage techniques—thanks to its unique fold-and-telescoping boom structure, which allows the arch-support unit to extend deep into the three-stage section for efficient installation. 2. High Efficiency: The equipment can transport multiple arch frames directly into the tunnel on-site and install them in a single operation. During three-stage construction, the main boom handles tasks at the top level, while the two auxiliary booms simultaneously assemble the arch frames for the middle stage. As a result, installing two arch frames—one for the three-stage section and another for the middle stage—can be completed in as little as 1 hour, significantly outperforming both manual labor and current market-leading arch-support machines. 3. Cost-Effectiveness: Operating this advanced equipment requires only 2 to 3 workers to complete the entire arch-support process, drastically reducing labor costs compared to traditional manual methods. This not only enables fully mechanized construction operations but also allows the equipment to efficiently serve two working faces simultaneously, delivering substantial economic benefits and social value to construction companies.

Classification:

Underground Engineering Series

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Product Details

Product Introduction

1. Full Operating Conditions: The system is capable of performing arch-support operations for tunnel excavation using three bench methods (full-face, two-bench, and three-bench techniques). This capability is made possible by its unique foldable + telescopic boom structure, which allows the arch-support device to extend deep into the three-bench section for precise installation of the arch framework.

2. High Efficiency: Multiple arch supports can be transported into the tunnel on the same vehicle and installed in one go. During three-stage construction, the main boom operates across all three stages, while the two auxiliary booms simultaneously handle the installation of arch supports for the middle stage. It takes only 1 hour to complete the installation of two arch supports—one each for the three-stage and middle-stage sections—making this method significantly more efficient than manual labor or current arch-support machines available on the market.

3. High Efficiency: The equipment requires only 2 to 3 workers to complete the entire arch-erection process, significantly reducing labor costs compared to traditional manual arch-support methods—and truly enabling mechanized construction operations. Meanwhile, it can simultaneously handle work at two tunnel faces, delivering substantial economic benefits and social value to construction companies.

4. High Safety: The equipment features wireless remote control operation, allowing operators to work beneath the initial spray surface, thereby enhancing personnel safety.

5. Intelligent Design: The entire machine features a digital system designed with an industrial controller and sensor technology, along with a user-friendly human-machine interaction system. This ensures superior control performance and enables real-time monitoring of the system's operational status.

6. The SRG312A Tunnel Multi-Functional Arch Support Installation Carriage is a new type of equipment designed for constructing tunnel support systems using either the full-face or step-by-step methods, as well as installing rock bolts and mesh. Additionally, equipped with a suspended platform, it can also serve multiple purposes, such as quality inspection, providing an elevated work platform, performing grouting, loading explosives, and facilitating efficient bolt installation at height. Featuring a three-arm, three-robotic-arm configuration paired with three suspended platforms, each arm enables automatic arch support gripping and precise micro-adjustments at the robotic end, allowing for highly efficient upright arch installation—truly making mechanized construction operations a reality.

Product dimensions and installation schematic

Product Specifications

Project Name	Specification Model	Parameters
Complete machine	Product Model	SRG312A
	External dimensions mm	9200×2600×3500
	Maximum working height	12m
	Maximum job width	15m
	Drive and steering method	Four-wheel drive, four-wheel steering
	Overall machine quality	25000kg
	Minimum turning radius	Inner side: 2.3 m / Outer side: 7.5 m
	Climbing ability	15°
	Walking speed	0–15 km/h
	Ground clearance	400mm
Engine	Type	Six-cylinder water-cooled diesel engine
Engine	Rated Power	125KW/2200rpm
Boom arm	Arm boom quantity	3 aircraft
	Maximum main boom extension length	12m
	Maximum Lifting Capacity	3000kg
	Main Arm Pitch Angle	-30, 59°
	Maximum installation height	12m
	Left and right auxiliary arm maximum extension length	13m
	Maximum Lifting Capacity	600 + 200
	Pitch angle of the main arm	-17, 48°
	Rotation angle	0.45
Hydraulic	Motor power	55KW
Hydraulic	Main oil pump displacement	100ml
Other	Equipped with a cable reel, chassis with emergency handling capabilities, and a three-arm system with remote control.