Q:The main difference between hydraulic circuit and pneumatic circuit

The hydraulic pressure should be returned to the tank, and the pneumatic can be discharged directly into the atmosphere without any waste or pollution!!

Q:Know how to clamp the hydraulic cylinder clamping force, clamping cylinder stroke, how to determine the type of clamping cylinder?

in the travel and travel, already know, so is the calculation of cylinder diameter: first by the clamping force and resistance, all losses on the cylinder at work and increase the safety coefficient, calculate the maximum thrust cylinder F; and then determine the pressure to choose the value P, calculate the piston area of A=F/P cylinder, finally converted a bore.

Q:How is the hydraulic jack refitted into a high pressure inflator?

6. pull out piston rod, such as pulling out, put out the base with pointed nose pliers rectangular rubber ring valve hole, pour 8# ball, with a long stretch in the end mouth gun oil discharge valve seat hole inside the air, need to control the volume, the piston rod will pop up, aim at the wall, avoid injuries caused by pop-up.7. remove the nylon seal of the hydraulic jack piston and then put the piston rod back into the cylinder. Use the tubing to clamp the cylinder against the counter clockwise. Thus, when the pipe clamp is pulled on, the deformation of the oil cylinder can be avoided and the clamping flat can be avoided.8., with self tapping screws into the steel ball block, with pliers pull out the block, take out 6# steel ball.9. all parts of the hydraulic jack are cleaned with diesel oil and dried with an air gun. The holes in the base are blown with an air gun, and the inside of the cylinder is observed with a flashlight. Is the inner part of the pump smooth?. Replace it if it is not smooth or damaged. Observe whether the three steel balls are round and smooth

Q:used as the form of a connecting rod or piston in an automobile crankshaft. What is the minimum allowable value for such a hydraulic cylinder?. This way, the supply of oil cylinder in the rear, I ask the output cylinder allowed the maximum number of transfer, such as cooling good, the highest output can be transferred. How many manufacturers are there in the market?.

Spinning speed, no speed. Why do you have to do this? Why don't you just use a hydraulic motor directly?

Q:What should be considered when the hydraulic pressure is changed and the pressure is changed? Is the cost of air pressure high relative to hydraulic pressure?

This change has to be premise, there are many functions can not be replaced. Hydraulic is characterized by "incompressible" and can be "precise control."". The compressibility of the air is unstable, and the end of the movement is the full stroke of the cylinder, while the hydraulic pressure is random. This is in "accurate, safe" on the big difference, depending on your working conditions are there such requirements?

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?

1. pairs of single rod hydraulic cylinder, import throttle speed into the non rod cavity, you can get more speed than the oil back throttling speed

Q:Application of hydraulic and pneumatic in industry

Hydraulic pay attention to heavy planting and stability, pneumatic attention to dexterity and speed and environment, pneumatic can be used in the pharmaceutical, food industry, each has advantages

Q:For example, I press a workpiece with a hydraulic press, and the pressure gauge shows 0.3MPa. Then I change the cylinder pressure. When I type, I choose the 0.3MPa cylinder instead of the inner diameter of the cylinder.

To see the pressure gauge is arranged in what position, the general pressure gauge installed in the hydraulic station exit, that is the pressure of the hydraulic system;

Q:I would like to ask if the speed of the hydraulic cylinder is related to the load on the piston rod?Proportional flow valve how to type, I currently only know the maximum pressure 2.5Mpa, according to Q=VA count as 0.4L/min, 1L/min can be chosen according to the ratio of flow valve? Is there another way to choose?

How to choose the proportion of flow valve, mainly based on the flow to control the size and accuracy, pressure levels, as well as some of the owners of the special requirements of the brand.As you say 0.4L/min this small flow proportional flow valve, can choose the brand is not much, Rexroth 2FRE6 series should be able to meet your requirements. As you said, the choice of 1L/min proportional flow valve is very appropriate, in the recommended electric signal 25%~75%.

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.