Suspension hydraulic prop is an external injection type single support equipment developed by the Institute of Mining Machinery Research of China University of Mining and Technology. It is a replacement product of DZ type (piston type) single hydraulic prop. So what are the precautions for using suspended hydraulic props?
First. Transportation and storage of suspended hydraulic props
1. Suspension hydraulic props should be placed in the minecart on the way to the underground working surface and should not be subjected to strong collision.
2. Suspended hydraulic props should be stored in a ventilated and dry place without corrosive materials; avoid water spray and collision.
3. After repairing the pillar, the inner cavity emulsion should be drained. The injection hole and stigma hole of the three-way valve are blocked to prevent dirt and coal dust from entering.
4. After repairing the suspension hydraulic prop, the movable column should be lowered to the bottom, placed vertically or obliquely, and stored in a place where the temperature is not lower than 0 and the air is dry.
Second,Suspension hydraulic prop operation
1. For single-person pillar operation, place the pillar into the seat, support it on the solid bottom, and hold the pillar handle. Before inserting the injection gun into the valve nozzle, flush the valve nozzle with the injection gun first. Look at the top plate, support the pillar, prevent the pillar or coal rock from falling and hit people, and pull the injection gun to raise the pillar. Before the pillars are tightened, the pillars must be straightened so that they are perpendicular to the top and bottom plates, and have a certain "mountain" angle, and there are practical measures to ensure the top.
2. Cooperate with two people when supporting. One person seated the suspension hydraulic prop in pairs, supported it on the solid bottom, grabbed the handle of the prop, and lifted the injection gun to raise the column. Before the injection gun was inserted into the valve nozzle, the valve nozzle should be flushed with the injection gun. The other person should look at the roof and support the top beam to prevent it from falling and hitting people. Before the pillar is tightened, the top beam must be straightened so that it is perpendicular to the coal wall, and the top is guaranteed.
3. For the pillar, the three-purpose valve nozzle should be oriented toward the old empty area, and the pillar handle should be unified upward.
4. After the injection gun is used up, it should be hung on the handle of the pillar. It is forbidden to throw the injection gun on the bottom plate. It is forbidden to hit the three-way valve with the injection gun. Buried.
5. It is forbidden to use leaking or invalid pillars, and it is forbidden to use the three-way valve that handles leaking in an improper way.
6. When a pillar worker grasps the pillar with his hand, he should make his palms upward to prevent the top plate from dropping a small piece of vermiculite and hurt the back of his hand during the ascent.
7. Suspension hydraulic prop can stop the injection when it reaches the required initial supporting force.
