Introduction of DWX Suspending Outside Inject Type Single Hydraulic Prop
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.
Parameters of DWX Suspending Outside Inject Type Single Hydraulic Prop
|
Type
|
Unit
|
DW35
|
DW31.5
|
DW28
|
DW25
|
DW22
|
DW20
|
DW18
|
DW16
|
DW14
|
DW12
|
DW10
|
DW08
|
|
Max Height
|
mm
|
3500
|
3150
|
2800
|
2500
|
2200
|
2000
|
1800
|
1600
|
1400
|
1200
|
1000
|
800
|
|
Min Height
|
mm
|
2700
|
2350
|
2000
|
1700
|
1440
|
1240
|
1110
|
1005
|
900
|
792
|
685
|
578
|
|
Working Stroke
|
mm
|
800
|
800
|
800
|
800
|
800
|
760
|
690
|
595
|
500
|
408
|
315
|
222
|
|
Net Weight
|
kg
|
82.8
|
76.4
|
70
|
58
|
55
|
49
|
47
|
43.6
|
39.9
|
36.3
|
32
|
26.7
|
|
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
|
Photos of DWX Suspending Outside Inject Type Single Hydraulic Prop
