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Series Single Hydraulic Acrow Prop

Series Single Hydraulic Acrow Prop

Brand Name : China Coal
Model Number : DW35
Place of Origin : China
MOQ : 10 pcs
Price : USD 80-150 per piece
Payment Terms : Western Union,T/T
Supply Ability : 5000 pcs per month
Delivery Time : 5-8 work days
Packaging Details : wooden case
Model : DW35
Max height (mm) : 3500
Min height (mm) : 2700
Distance (mm) : 800
Rated Resistance : 150
Net Weight : 82.8
Rated Fluid Pressure : 19.1
First Sustaining Load : 115-157
Diameter of Oil Cylinder : 100
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Introduction of DW Single Hydraulic Acrow Prop

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 Single Hydraulic Acrow 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 Single Hydraulic Acrow Prop



Max Heightmm35003150280025002200200018001600140012001000800600
Min Heightmm27002350200017001440124011101005900792685578


Working Strokemm800800800800800760690595500408315222145
Net Weightkg82.876.4705855494743.639.936.33226.726.5
Rated ResistancekN150200250300
Rated Fluid PressureMpa19.125.531.838.2
First Sustaining LoadkN118--157
Pump Station PressureMpa15or20
Column Lifting Speedmm/s≥60
Column Descending Speedmm/s≥40
Diameter of Oil Cylindermm100
Base Areacm2113109
Service SubstanceCoal 10 (M10)Emulsifier(or MDT10emulsifier)1-2% Emulsion

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