Coalface Cutting Chain Haulage Top Walking Roof Support

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By using our patented assembly technology, we have designed this coalface cutting chain haulage top walking roof support. The bending moment exerted to the top beam is greatly reduced, thus reducing the weight on the support. With thick rear pillars, our product has strong ability to cut the top and the cutting force is up to 1920kN or more per meter. Therefore, this product is suitable for supporting hard roofs. As it can withstand large lateral load, work stability can still be ensured when the legs are shoved by the fallen gangue at large mining height.

Technical Parameters

Model	ZH2990/12/42	ZH3300/12/42	ZH4200/12/42	ZH4600/12/42	ZH3800/12/42
Height	1200-4200mm
Width	About 1200mm
Center distance	1250mm
Weight (with advance increment of 0.8m, height of 2.5m, and no bottom beam)	About 2.5t	About 2.6t	About 2.9t	About 3-3.5t	About 3t
Leg	3×Φ125 2×Φ160	3×Φ140 2×Φ160	3×Φ140 2×Φ200	3×Φ160 2×Φ200	3×Φ125 2×Φ200
Setting load	2466kN (P=31.5MPa)	2721kN (P=31.5MPa)	3430kN (P=31.5MPa)	3900kN (P=31.5MPa)	3160kN (P=31.5MPa)
Support resistance	2990kN (P=38.2MPa)	3300kN (P=38.2MPa)	4200kN (P≈38.2MPa)	4600kN (P≈37.4MPa)	3800kN (P=38.2MPa)
Supporting strength	0.64MPa~0.81MPa	0.71MPa~0.89MPa	0.89MPa~1.12MPa	1.0MPa~1.27MPa	0.81MPa~1.03MPa
Floor pressure (with bottom beam)	On main floor: 0.87MPa On bottom plate: 2.69MPa	On main floor: 1.09MPa On bottom plate: 2.69MPa	On main floor: 1.05MPa On bottom plate: 4.2MPa	On main floor: 1.38MPa On bottom plate: 4.2MPa	On main floor: 0.87MPa On bottom plate: 4.2MPa
Jack for moving support	1 Cylinder diameter/telescopic rod diameter: 100/70 Stroke: 630, 700, 800, 900, 1000 Push / pull force: 247/126kN(P=31.5MPa)
Jack for protrusive beam	2 Cylinder diameter/telescopic rod diameter: 63/45, Stroke: 630, 700, 800, 900, 1000 Push / pull force: 47/48kN (P=15/31.5MPa)
Jack for lateral pushing	2 Cylinder diameter/telescopic rod diameter: 63/45 Stroke: 130 Push / pull force: 98/48kN (P=31.5MPa)

Note: The above product models are for reference. You can contact us for more products and information. We can also investigate the actual geological conditions your mine and then design suitable products for you.

Related Names
Longwall Shearer Roof Support | Hydraulic Mining Equipment | Powered Support System

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