Location of mining stairs in Xinglu Valley

1. The pressure of the cylinder is determined by the load, and the pressure of the physical force is equal to the force divided by the acting area (i.e. P = f / s)
if the output force of the cylinder is to be calculated, the output force of the cylinder will be calculated, It can be calculated according to the following formula: let the radius of piston (i.e. cylinder barrel) be r (unit mm), the radius of piston rod be r (unit mm), and the pressure position P (unit MPa) when working
then the thrust F of oil cylinder is pushed = 3.14 * r * r * P (unit n)
the tension F of oil cylinder is pulled = 3.14 * (R * R-R * r) * P (unit n)
100 ton oil cylinder, and the system pressure is 16MPa, Please help me calculate the diameter of the selected cylinder piston? How to calculate it< The theoretical value is: 282mm
16MPa = 160kgf / cm2, 100t = 100000Kg
100000 / 160 = 625cm2, cylinder diameter d = {(4 * 625 / 3.1415926) square root}
calculation formula of hydraulic cylinder stroke time
when the piston rod extends, the time is (15 × three point one four × Square of bore × Cylinder stroke (mm) ÷ Flow rate
when the piston rod retracts, the time is [15 × three point one four ×( Square of cylinder diameter - square of rod diameter) × [cylinder stroke] ÷ The unit of flow cylinder diameter is m, the unit of rod diameter is m, the unit of stroke is m, the unit of flow is L / min
how to calculate the stroke of sleeve type hydraulic cylinder and its working principle
the formation calculation is very simple:
the total length of the cylinder, minus the occupied length of both ends of the cover, minus the length of the piston, is the effective formation. Generally, buffer and anti-collision mechanism or circuit will be set at both ends. Working principle:
1. End cover oil inlet type: both ends of the cylinder cover are connected with pipelines, one end is connected with oil, and the piston and piston rod run in the same direction; Compact structure, suitable for small oil cylinder
2. Piston rod inner oil type: the piston rod is hollow, inner oil, the connecting part of piston and piston rod has oil hole, after oil, the piston and piston rod want to run in another direction; Suitable for large oil cylinder
3. Cylinder direct entry type: large tonnage single acting cylinder, with no end cover at one end (end cover and cylinder body are welded together), directly supplying oil to the cavity, doing work in one direction, and returning oil to the other end cover or spring and other energy storage elements. I have a hydraulic cylinder with a plunger diameter of 40mm, an outer diameter of 150mm and a height of 400mm. Please tell me the tonnage of the hydraulic cylinder. Thank you for your oil pump pressure 10MPa. The pressure (tonnage) of a hydraulic machine is related to the plunger diameter and oil supply pressure
calculation of working pressure (tonnage): stressed area of plunger × Oil supply pressure = working pressure (tonnage) stressed area of plunger unit: mm2 oil supply pressure unit: n / mm2 working pressure (tonnage) unit: n conversion: 1n = 0.101972kgf 1000kgf = 1tF (ton force)
the steel diameter of 15 to 25 tons of oil cylinder
the tonnage of oil cylinder is related to the size of cylinder diameter and the pressure provided by the system. For example, if the inner diameter of the oil cylinder is 100 mm and the pressure provided by the system is 16 MPa, then the pushing force of the oil cylinder is: 3.14 * 16 * (100 / 2) * (100 / 2) / 10000 = T
what is the inner and outer diameter of the 50 ton hydraulic cylinder
1500000 Newton = 3.14 * RR * p r = root sign [1500000 / (3.14p)] if the designed working pressure is 31.5 MPa, Then:
R = root [1500000 / (3.14 * 315000000)] = 0.123m, inner diameter of oil cylinder: D = 2R = 0.246m, general specification: 250mm; if the design working pressure is 25MPa,
R = root [1500000 / (3.14 * 25000000)] = 0.138m, inner diameter of oil cylinder: D = 2R = 0.276m, general specification: 300mm
as for the wall thickness of oil cylinder, it depends on working pressure, material and cylinder diameter
calculation of cylinder pressure of hydraulic press
assuming that the diameter of piston head is 320mm and the pressure is 25MPa, the tonnage of cylinder can be calculated. I know that f = P * a, but I am not proficient in unit conversion. There are two ways to solve the problem. One is to change 25MPa into 250kg / cm2, and then convert what. The other is to use cow, pressure or 25MPa * 3.14 * 160 * 160, divide by 1000 after calculation. I am confused. Who can help me explain it carefully, mainly unit conversion
the best answer
16 * 16 * 3.1416 * 250 = 201000 kg = 201 t. 250 kg / square centimeter, so all units should be unified into centimeter. 320 mm = 32 cm, which is calculated to be kilogram. Know one of the units, the others should be unified measurement, ah, the most basic basis of application problems
international unit: diameter change is meter, pressure is PA, pressure Newton: D = 0.32m
A = 3.14 * d ^ 2 / 4 = 0.0804 (square meter) pressure = 25 * 10 ^ 6
pressure = 0.0804 * 25 * 10 ^ 6 = 2010000 (Newton) = 201 ton

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3.

There is no ladder for the second floor of Xinglu Valley story:

1. You can build your own ladder

2

3. Through wood, building stairs, entering the mine cave can be used directly, entering the next floor