TR8315 1432 001A

Nominal pressure: 31.5MPa;

nominal flow: 320 L/min;

Operating voltage: DC12V;

12-funtion valve units stack 2-funtion valve unit

5 cartridges/DN20, 10 cartridges/DN10, 7 PCS solenoid valves                 

Flow inlet：DN25; Return flow port：DN32

TR8315 1632 001A

Supporting and shielding hydraulic roof support product introduction:

The supporting and shielding hydraulic roof support is a type of support developed after the supporting support and the shielding support. It can be applied under the conditions of broken roof, medium stable roof, stable roof and soft roof. The supporting and shielding bracket is mainly a kind of bracket which is mainly used for support and also has the function of shielding.
The supporting and shielding type bracket includes 6 major structures, namely: coal seam, the position of the front end of the roof beam, the roof beam, the shield beam, the base and the pillar. The rear part of the base is hinged with the front and rear connecting rods, and the front welding ear plate is used to install the push jack. The other end of the push jack is connected with the working surface conveyor. Through the expansion and contraction of the push jack, the pushing and sliding movement and the moving frame are realized.

Supporting and shielding hydraulic support product features:

(1) The supporting capacity is large, the top beam is in good stress state, and the top cutting performance is strong.

(2) It has a shield beam, which can effectively separate the working area and the goaf area to prevent the gangue from passing people.

(3) The support has good stability and a large working space, which is convenient for ventilation and pedestrians.

(4) The structure is relatively complicated, the steel consumption is large, and the cost is high.

Supporting and shielding hydraulic support product advantages:

One of the advantages of the support shield is that the vertical support force is far away from the coal wall, which means that the support effect of this type of support will be better for the roof protruding from the rock surface. In addition, its contact pressure with the top and bottom plates is relatively uniform, and the maximum contact pressure is relatively small, which has high stability. However, the multiple thrust paths generated by the front and rear pillars of the shielded hydraulic support affect the support effect of the support in the formation prone to voids. The thrust of the rear pillar of the support causes the top beam to produce a counterclockwise rotational displacement, thereby reducing the non-contact area between the top beam and the bottom plate, making the top slab more hollow, and causing the front pillar to bear all pressure loads. Decrease supporting capacity.