Roof-Combined Chain Haulage Top Walking Roof Support for Steep Coal Seam (Double Driving)

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Patent Number: 200710195181.8, 200510070729.7, 200820000005.4

Our chain haulage top walking roof support has obtained National Invention Patent. Adopting the patented technology of separate driving top beam and bottom beam, this product has overcome many shortcomings of traditional brace type supports. It not only moves fast but also well adapts to adverse geological conditions.

Most of the nowadays widely used shield type and chock shield type mechanized mining brackets have shield beam which is inclined to the rear bottom. The cut roof will fall onto it, thus increasing the weight on the bracket. The easy-to-fall false roof will sometimes exert a backward friction on the top beam, causing the bracket to lean back during moving.

Unlike traditional mechanized mining brackets, our chain haulage top walking roof support has no sharp increase in weight with the increase of mining height. It adopts a brace type structure. The cut roof will directly fall onto the base place, which reduces the weight on the bracket. The stability of this product does not reduce as the inclination or the mining height increases. In addition, this product has lateral moving and locking functions, i.e., the support is locked transversely and longitudinally by cylinders and valves across the whole working face.

Roof-Combined Chain Haulage Top Walking Roof Support for Steep Coal Seam (Double Driving)

This roof support is disassembled for transportation and installed on the spot. It is suitable for supporting steep coal seam with the inclination less than 45 degrees.

This product has been widely adopted in the Vietnamese market. It solves the problems of Vietnamese mines that geological conditions are harsh and roof inclination is large.

Technical Parameters of ZH1800/16/24ZL Roof-Combined Chain Haulage Top Walking Roof Support

Item	Unit	Value	Remark
Height	mm	1692/2455	Min./Max.
Length	mm	2760
Width	mm	About 1200
Number of legs		4	Cylinder: diameter 125, height 2.2m
Advance increment of bracket	mm	800	630mm for machine mining type
Advance increment of protrusive beams	mm	800	630mm for machine mining type
Number of protrusive beams	sets	As appropriate
Setting load	kN	960/1560	19.6MPa/31.5MPa
Working resistance	kN	1875/2000	38.2 Mpa/40MPa
Supporting strength	MPa	0.5	Based on the center distance of 1.25m
Working solution concentration	%	Open type: 2% Closed type: 5%	M-10 emulsified oil
Rated pressure of pump station	MPa	31.5 or 19.6
Control mode		Liquid injection gun or centralized control

Note: The above table information is for reference. We can design and produce suitable products for you according to the actual geological conditions of your colliery.

Related Names
Underground Mining Structural Support | Continuous Mining Support | Sloping Roof Construction Equipment

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