Q:Difference between cylinders of hydraulic cylinders

The working principle is very simple by using the Pascal principle (F1/A1=F2/A2), the advantages do not need lubricating oil, because his work is medium, and he can realize remote control, can realize stepless speed, no noise etc......

Q:Hydraulic cylinder application

Construction machinery, construction machinery, cement, power, electronics, machinery, medical equipment, packaging machinery, etc.. Is a telescopic movement of the body. ?The use of a very wide range of cranes from our daily saw, automated assembly line, small to the hospital some small hydraulic beds, etc., are widely used hydraulic cylinder, cylinder equipment.

Q:Does the hydraulic cylinder change the inner ring of the cylinder?

if you do not want to buy a set of hydraulic system, and the power to the cylinder is not large, you can use compressed air to promote the hydraulic oil, hydraulic oil cylinder to drive, such as power and compressed air, but very smooth.

Q:How do I calculate the flow rate of the hydraulic cylinder?

Hydraulic cylinder flow = hydraulic cylinder piston cross section * speedFor example: the cylinder speed of D10cm requires 10cm per secondThe hydraulic cylinder piston cross-section =pi * D * D, 4=3.14 * 10 * 10 4=78.5 / cm2Flow per second =78.5 * 10=785 ml =0.785 litersThe flow rate is =0.785 * 60=47.1 liters per minute

Q:What are the conditions in the hydraulic system with the imported throttle valve? What is the difference between the throttle valve and the outlet valve?

2., import throttle speed control, easy to use pressure relay to achieve pressure control;

Q:Can the hydraulic jack be changed?

No, high pressure gas is dangerous, and the output speed and thrust are not stable.

Q:How do you adjust the timing of the car's cylinder?

If there is a distributor. You can rotate around to make time earlier or later. If not, start with the timing belt, one earlier or later! To adjust the time!

Q:We have to design a manual plunger water hydraulic pump, but the wall thickness of the cylinder will not be designed and checked. I follow the sigma delta is not less than PD/2[design is out of 10mm thick, but the teacher said 5mm can withstand the pressure of 150MPa, the material with corrosion resistant stainless steel can. Some of my parameters are the maximum cylinder pressure 140MPa, cylinder size d=18mm (can also be smaller), length 60 ~ 80mm, how can I design wall thickness? thank you very much indeed

The maximum permissible bearing pressure in the thin-walled tube [P] formula: [P]] =2[sigma phi S (D / S) in the formula: [Sigma - material allowable stress; coefficient of weld - diameter, seamless tube, pipe wall thickness with =1; S-- d--; the inner diameter of the pipe.

Q:After running in, the upper cylinder head, the hydraulic jacking rod and the rocker arm are also arranged in the original position, and the cylinder head is not provided with a valve body without gaps

I. valve clearance: when the valve is completely closed, the gap between the end of the valve stem and the component of the valve train is called the valve clearance. Two, the valve clearance is necessary: when the engine works, the valve will be due to temperature expansion, if the valve and its transmission parts, in the cold when no gap or clearance is too small, in the hot state, and the transmission of the thermal expansion valve will cause the valve is not tightly closed, causing the engine leakage in the power stroke in compression and the power down, don't even start easily when serious. In order to eliminate this phenomenon, the valve clearance is usually used in the cold assembly of the engine to compensate for the expansion after the valve is heated. Some engines use hydraulic tappet, the length of tappet can change automatically, and the thermal expansion of the valve is compensated at any time, so there is no need to reserve the valve clearance. Three, the valve clearance is too large and too small damage, the size of the valve clearance by the engine manufacturer, according to the test to determine. Generally in cold state, the clearance of intake valve is 0.25mm~0.35mm, and the clearance of exhaust valve is 0.30mm~0.35mm. 1, too small: if the valve clearance is too small, the engine in hot state may be due to valve closed lax and leak, leading to power down, or even valve burned.

Q:What is the four link mechanism of hydraulic support?

Four link mechanism is an important part of hydraulic support, including: connecting rod, rear connecting rod, shield beam and base.1. The connecting rod group consists of the connecting rod body, the connecting rod big head cover, the connecting rod small head bushing, the connecting rod big head bearing bush and the connecting rod bolt (or screw). The connecting rod group bears the force acting on the piston pin and its swing and the reciprocating inertia force of the piston group, and the magnitude and direction of these forces are periodically changed. Therefore, the connecting rod is subjected to alternating load such as compression and tension.