B
Long beam B metal roof beam B cross-shaped roof beam B double wedge roof beam hinged roof beam type metal roof beam
B
Metal roof beam model: B/B/ B/ B/
B
Long beam metal roof beam model: B ( )
Cross-shaped metal roof beam model B*( )
B*
)
Double wedge top beam model: B/ B/
Metal top beam model ( )/
Metal roof beam:
The roof beam specifications are divided into: meter
and meter
extension beam.
The above-mentioned top beam can be combined with hydraulic props or various types of single metal props with hinged tops to form a metal bracket. It is used to support the roof of horizontal and gently inclined mining working faces below the inclination angle of the coal seam and with a mining height of 1 meter. It can cantilever support the roof above the working face conveyor, so that there is a larger space between the coal wall and the pillar, thus providing a way to improve working conditions, adopt new coal mining machinery and bendable scraper conveyors, and realize general mechanization of coal mining. condition.
B
Type B metal hinged roof beam is a new type of roof beam, which is a replacement product of the type roof beam. The beam body is butt-welded by two pieces of high-grade steel, and the cross-sectional heights are
Metal roof beam parameter table
> < Model
Allowable bending moment of hinged beam
> Single beam load-bearing capacity
Overall tempered hardness B
Beam section
Coefficient
Adjustment angle
Design
Unit weight
/
< > Minimum (maximum)
< > Beam body
> Hinge part
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> Up and down
> Left and right
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< > B
B
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< > Note: The load-bearing capacity is the concentrated load in the center of the beam when the fulcrum span is used.
The allowable bending moment of the hinge is B, and the end load is B for calculation.
The design weight does not include the weight of the adjustable wedge.
Metal long beam
Hinged roof beam
Handover roof beam
B
Metal roof beam
B
Metal roof beam
B/ B/ B
Type metal roof beam
Metal roof beam
Cross metal roof beam
Double-wedge metal roof beam
Type metal roof beam
Type metal roof beam
Type metal roof beam
B/ B/ B/ B/ B
Metal roof beam
B/ B/
Double wedge roof beam B*/cross roof beam B*/cross roof beam
m
Metal roof beams
Meters
Handover of roof beams
Shandong roof beams
Jining roof beams
<
Long row of beams
Metal long beam
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