Product Introduction
A articulated roof beam mine supporting is a mining support beam structure connected by pin joints, which can be flexibly spliced in multiple sections and used in combination with metal pillars.
Product Specification
| Model | Number of roots per graft (root) | Allowable bending moment of beam body/(kN.m) | Minimum load per girder/kN | Allowable bending moment of the joint part/(kN.m) | Adjust the angle (not less than) | Height/mm | Other sizes/mm | weight | |||
| Up and down | around | Articulating section | Beam body H | Length (pin hole center distance) L | The beam body length L1 | ||||||
| DJB600/470 | 1--2 | 52.5 | 470 | 30 | 7° | 3° | 138 | 90 | 600 | 420 | 18.9 |
| DJB800/420 | 1--2 | 52.5 | 420 | 30 | 7° | 3° | 138 | 90 | 800 | 620 | 22.9 |
| DJB1000/300 | 1--2 | 52.5 | 300 | 30 | 7° | 3° | 138 | 90 | 1000 | 820 | 26.93 |
| DJB1200/300 | 1--2 | 52.5 | 300 | 30 | 7° | 3° | 138 | 90 | 1200 | 1020 | 30.95 |
| Model | Long beam cross-sectional size/mm | Overall quenched and tempered hardness/HB | Carrying capacity/HB | Cross-sectional factor/cm3 | weight | |||
| (Kg·m-1) | ||||||||
| Long | wide | high | WX | WY | ||||
| DFB4500/300 | 4500 | 100/83 | 90 | 300～350 | 300～400 | 68.66 | 46.55 | 92.7 |
| DFB4600/300 | 4600 | 100/83 | 90 | 300～350 | 300～400 | 68.66 | 46.55 | 94.8 |
| DFB4700/300 | 4700 | 100/83 | 90 | 300～350 | 300～400 | 68.66 | 46.55 | 96.8 |
| DFB4800/300 | 4800 | 100/83 | 90 | 300～350 | 300～400 | 68.66 | 46.55 | 98.9 |
| DFB4900/300 | 4900 | 100/83 | 90 | 300～350 | 300～400 | 68.66 | 46.55 | 100.9 |
| DFB5000/300 | 5000 | 100/83 | 90 | 300～350 | 300～400 | 68.66 | 46.55 | 103 |
Product Customization
Beam Length: 1.5m / 2.0m / 2.5m / 3.0m / 3.5m / 4.0m
Beam Height: 150mm / 180mm / 200mm / 220mm / 250mm
Number of Hinged Sections: 2 sections / 3 sections / 4 sections / 5 sections
Material Options: Q235 steel / Q345 steel / 16Mn steel
Load Capacity: 50kN / 80kN / 100kN / 120kN / 150kN
Hinge Connection: Ball hinge connection / Pin connection / Universal joint connection
Surface Treatment: Painting / Galvanizing / Spray coating
Beam Section: I-beam / Channel steel / Rectangular steel tube
Hinge Angle: ±15° / ±20° / ±25° / ±30°
Product Applications
Coal Mining: Used for temporary roof support in working faces.
Metal Mines: Used for tunnel excavation support.
Tunnel Engineering: Used for top support in excavation cross-sections.
Underground Engineering: Used for roof support in irregular spaces.
Quarries: Used for supporting transition sections from open-pit to underground mining.
After-Sales Service
1. Installation & Commissioning
Dispatch technical personnel to the mine site for complete equipment installation and commissioning.
Customize the installation plan according to the mine's roof conditions and tunnel dimensions.
After commissioning, provide a verification report confirming that the hinge action is flexible and the load-bearing capacity meets standards.
Conduct practical training for on-site personnel simultaneously.
2. Technical Training
Training Content: Equipment disassembly, operation, maintenance, and fault diagnosis.
Provide operation manuals, maintenance manuals, and hinge component replacement flowcharts in both Chinese and English.
Focus on key points such as daily inspection procedures, hinge locking inspection standards, and hydraulic system operation protocols.
Issue certificates after training and keep video records.
3. Spare Parts Supply
Provide original factory spare parts: hinge pins, locking plates, top beam plates, bases, seals, etc.
Unified part code management, allowing customers to purchase directly with the part code.
Commonly used consumables can be pre-sold to the customer's warehouse for on-site stock.
Ensure that spare parts materials are consistent with the original equipment.
4. Warranty & Quality Guarantee
Provide a 12-month warranty for the entire machine, offering free repair or replacement for manufacturing defects.
Core hinge components (pins, hinge seats) have a service life that meets industry standards.
Respond to customer work orders within 48 hours during the warranty period.
FAQ
Q: Where is your factory located?
Me: Our factory is in Boshan District, Zibo City, Shandong Province
Q: Are you a trading company or a factory?
Me: We are a factory, warmly welcome you to visit our factory
Q: What do you need for a detailed quotation?
Me: Please tell me the product model you need, the number of products, the requirements for the surface treatment of the product, etc.
Q: How about your technical level?
Me: We focus on the production of coal mine support products for many years, with rich experience in research and development, we are the first manufacturer in the country to obtain the safety standard of five-meter single hydraulic pillar, and Shandong University of Technology jointly develop intelligent mining equipment, at the same time in 2025 we also help Dongtai Group to develop the required six-meter single hydraulic pillar.
Q: Do you have a safety certificate for your products?
Me: Our products have a national certification safety certificate.
Q: How do you guarantee the quality of your products?
Me: Each of our products needs to be inspected for quality before leaving the factory, and our products are closely related to the lives of coal miners, so we strive to make the best product quality.
Q: Can you provide customization, modification drawings and other requirements?
Me: Of course, if you need, we will modify our products according to your requirements and the actual situation of the coal mine.
Hot Tags: articulated roof beams mine supporting, China articulated roof beams mine supporting manufacturers, suppliers, factory, Metal Hinged Top Beam, Metal Long Beam, DFB Long Metal Beam, Underground Mining Roof Beam, cross roof beam, Type Steel Girder
