Wind Tunnel Temporary Supporting in Underground Mines Cylinder Hydraulic Acrow Ground Support

• 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.: SDS
• 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

 

Precautions for the use of pillars
(1) When the pillar is in use, do not use it at the highest height;
(2) Pillars should generally be used in conjunction with metal hinged top beams;
(3) For new pillars and pillars used for the first time after restoration, the air in the inner cavity of the pillars shall be discharged;
(4) When supporting the pillar, flush the liquid injection valve body of the one-way valve with a liquid injection gun to avoid coal dust pollution and affect the
performance of the valve;
(5) When supporting pillars, the direction of the liquid injection valve body of the three-way valve is toward the downward groove direction of the working surface;
(6) Special drifting jacks should be used for migration, and the waist of the pillar should not be used as the fulcrum of migration;
(7) Hard objects such as hammers and picks are not allowed to knock the cylinder body and three-purpose valve;
(8) The retracted pillars should be lowered to the lowest height, and immediately placed on the side against the old lint. It is forbidden to throw them on the bottom
plate;
(9) Liquid injection guns are not allowed to be placed randomly. After injection, they should be hung on the handle of the second row of pillars;
(10) When crushing, it is strictly forbidden to use blasting or deadlift with a post-returning machine. Undercover methods should be used to loosen the pillars and then pull them out.
 

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

When the load exceeds the rated working resistance of the pillar, the high-pressure liquid will open
the safety valve in the three-purpose valve, the liquid will overflow, and the pillar will shrink; when
the load on the pillar is lower than the rated working resistance, the safety valve will be activated
by the safety valve spring. Closed, the liquid stops spilling.