Mô Hình Nâng Thủy Lực Để Bàn Diy Thiết Kế Sáng Tạo

In recent years, because of the rapid development of building scale, more and more high-rise buildings, the use of platform on the site is more and more widespread.What's the principle of such a convenient tool, and after this section of the experiment, you may know the mystery.

Objective: 1.Know the principle of simple elevators
-learning about pneumatic and hydraulic pressure

The lifting platform is accomplished by the expansion and folding of the four-sided supporting frame. its power is to push the expansion and folding of the four-sided bracket through air pressure.It makes high-altitude work more efficient and safe.
The instability of the quadrilateral: once the four sides of the quadrilateral shape are determined, the quadrilateral shape can still change, for example, rectangles, rhombuss, etc., so that the four sides of the quadrilateral shape are determined, and the angle between the sides of the quadrilateral shape is still changeable.Because of the instability of the quadrilateral shape, easy deformation, flexible and flexible travel, the expansion and folding of the bracket is more convenient

Pneumatic pressure is the atmospheric pressure acting on a unit area, the lift and lift is a pneumatic drive principle, which uses compressed gas as a working medium, and the pressure of gas to transmit power or information fluid transmission.The system of transmission power is to convey compressed gas to pneumatic actuators through pipelines and control valves, and to convert compressed gas pressure energy into mechanical energy.
Hydraulic transmission is carried by liquid as a working medium.In this experiment, the syringe can be regarded as an executive element of a hydraulic system, which, when injected into the syringe, is equivalent to a hydraulic cylinder, converts the pressure of the liquid into mechanical energy.

Experimental step: 1.Know the experimental equipment: four-sided bracket, plastic box, hole plastic box, hose, syringe, hole syringe, small man model, screw, nut, foam glue, long screw.

-screw the four-sided bracket to the plastic box with holes, forming the bottom of the lift.

-fix the top end of the quadrilateral bracket onto the plastic box with a long screw (insert the syringe into the screw when the screw passes through one side of the bracket and the plastic box, then fix it in the middle position and twist it with a nut on the other side so that the entire bracket part of the lift is assembled.
-connect one end of the hose to a syringe with a hole, the other end to a syringe, and the bracket and the power device (syringe) together form a complete lift-up system.Of course, water can also be injected into the syringe, which is pushed into a perforated syringe, thus driving the bracket up, thus turning into a hydraulic lift-up system.

Tip: when assembling the bracket, do not forget to place gaskets between screws, so that the bracket is loose, affect the experimental ef