Mine Roof Support Systems Temporary Supporting in Underground Mines Suspension Type Double Telescopic for Coal Mining Steel Single Hydraulic Acrow Prop Jack

• After-sales Service: Remote Service
• Warranty: One Year
• Certification: CE, ISO 9001:2008, ISO9000
• Standard: AISI, ASME, GB
• Surface Treatment: Polishing
• Manufacturing Process: Casting
• Model NO.: VME
• Material: Carbon Steel
• Core Components: Pump
• Max Height mm: 650
• Rated Working Pressure MPa: 49
• Applicable Industries: Construction Works/Energy/Miming
• Rated Working: 250
• Transport Package: Steel Pallet or Customized
• Origin: Shandong
• HS Code: 7308900000
• Production Capacity: 10000 Sets/ Year

Product Description

Product Parameters

 

Pillar transportation and storage
(1) When the pillar is transported, the pillar should be reduced to the minimum height;
(2) Use a special hydraulic prop transport vehicle, and it must be handled with care during installation and disassembly, and it is strictly forbidden to drop it;
(3) Pillars should be stored in a dry room not lower than 0ºC;
(4) For pillars that are not in use for a short period of time, the water (or emulsion) in the pillar cavity should be cleaned, the surface of the cylinder body should be
washed and dried, and the liquid inlet of the three-way valve should be blocked to prevent stolen goods from entering;
(5) The pillars stored in the groove on the working face should be erected and neatly arranged;
(6) The number of spare pillars in the well generally does not exceed 5% of the working face usage.

Category	Malfunction	cause of issue	Solution
Lifting column failure	The movable post does not protrude from the cylinder body or protrudes very slowly when supporting	No pressure or low pressure in the pumping station; The shut-off valve is closed; The injection valve nozzle is blocked by dirt; Clogged pipeline filter	Check the pumping station; Open the shut-off valve; Clean the injection valve nozzle; Clean the filter
Back column failure	Slow or no drop of the moving column	The return spring is dropped or damaged; The cylinder has a partial depression; Damage to the surface of the live post	Re-hang the return spring orreplace with a new spring; Replace damaged parts
Seal failure	1. Liquid leakage from the handle; 2. Liquid leakage from the base; 3. Liquid leakage from the φ42 hole on the column head; 4. Leakage from check valve or unloading port	The Y-ring is damaged, the oil cylinder is deformed or the coating falls off; The base φ100×3.1 O-ring is damaged; φ42×3.5 O-ring is damaged; Check valve, unloading valve is damaged	Replace the Y-ring, replace the cylinder; Replace the O-ring; Replace with new valve or clean one-way valve, unload valve pad

The DW single hydraulic prop has good stability
and outstanding technical advantages.
The height of the single body support of the top grade coal mining face is
raised from 2.5 meters to 3.5 meters.
The coal seam under 3.5 meters can achieve the full height of the coal
seam.
At the same time, it can provide end and advance support for the coal
seam under the thickness of the coal se
seam under the thickness of4.5
meters.