Support Equipment and tools

DW Outer Injection Coal Mining Single Hydraulic Acrow Prop

HS Code：8479899990
Material:Alloy
Transport packaging：Wooden Case
Usage Scenarios：Mine or roadway
Product description: DW Outer Injection Coal Mining Single Hydraulic Acrow Prop is from Jining Enwei Intelligent Technology Co., Ltd. which is a professional single hydraulic prop supplier and exporter in china
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DW Outer Injection Coal Mining Single Hydraulic Prop increasingly widely used in the production of its traditional wooden pillars supporting metal friction compared with high recovery, supporting safe and reliable, working resistance constant, setting load is high, the use of flexible benefits. Outer single hydraulic prop can be used alone or in combination with metal hinged roof beams supporting the use, can be used in coal seam dip is less than 25. Stope roof gently inclined to pay, but also for mechanized coal face end support or temporary support available.

Structure of DW Outer Injection Coal Mining Single Hydraulic Prop

DW Outer Injection Coal Mining Single Hydraulic Prop is mainly composed of living, fuel tanks, three valves, cover, base body, reset spring handle body and a piston.

DW Outer Injection Coal Mining Single Hydraulic Prop’s working principle is: When liter column, the liquid injection piping system with three guns insert liquid injection valve body, hung locking sleeve, operating liquid injection gun, pump high-pressure liquid injection fluid through the top opening with three guns valve ball-type check valve, into the pillar, forcing the live cylinder rises; When contacting metal hinged roof pillar roof beams and the top beam close to the face plate, live longer cylinder increases, the acrow prop’s a pressure chamber in a very short time and the same pump pressure, and then release the gunner and pouring off the high pressure fluid pump, the three-way valve with the valve closed, so that acrow prop cavity remain constant. Currently, external injection-type C-shaped handle body parts, welded at both ends of the outer wall of the cylinder is fixed, causing the handle body and cylinder can not be rotated relative to the operating space leading to outer single hydraulic prop is limited, inconvenient to use. In addition, the DW Outer Injection Coal Mining Single Hydraulic Prop uses emulsion, prone to corrosion.

Technology Parameters of DW Outer Injection Coal Mining Single Hydraulic Prop

Type	Unit	DW35	DW31.5	DW28	DW25	DW22	DW20	DW18	DW16	DW14	DW12	DW10	DW08	DW06
Max Height	mm	3500	3150	2800	2500	2200	2000	1800	1600	1400	1200	1000	800	600
Min Height	mm	2700	2350	2000	1700	1440	1240	1110	1005	900	792	685	578	485
Working Stroke	mm	800	800	800	800	800	760	690	595	500	408	315	222	145
Net Weight	kg	82.8	76.4	70	58	55	49	47	43.6	39.9	36.3	32	26.7	26.5
Rated Resistance	kN	150	200	250		300
Rated Fluid Pressure	Mpa	19.1	25.5	31.8		38.2
First Sustaining Load	kN	118--157
Pump Station Pressure	Mpa	15or20
Column Lifting Speed	mm/s	≥60
Column Descending Speed	mm/s	≥40
Diameter of Oil Cylinder	mm	100
Base Area	cm2	113			109
Service Substance		Coal 10 (M10)Emulsifier（or MDT10emulsifier）1-2％ Emulsion