Hydraulic lift model

Features:
You can graffiti freely with your imagination to make your own toys.
Exercise children's practical ability, let them understand the simple knowledge of atmospheric pressure and water pressure.

specification:
Material: wood + plastic + metal
Knowledge points: Principles of knowledge of atmospheric pressure and water pressure
Dimensions: 11X10X8 cm / 4.33X3.94X3.15 inches
Color: as shown

Recommended age: 6 years +

Purpose:

1. Know the principle of simple lifting platform

2. Learn related knowledge of air pressure and hydraulic pressure

The lifting platform relies on the unfolding and folding of the quadrilateral support frame to complete the lifting of the cargo platform, and its power is to push the unfolding and folding of the quadrilateral support through air pressure. It makes the aerial work more efficient and more secure. The instability of the quadrilateral: after the length of the four sides of the quadrilateral is determined, the shape of the quadrilateral can still change, for example, it can be rectangular, diamond, etc. Therefore, "the four sides of the quadrilateral are determined, its shape is uncertain" between the sides The angle can still be changed. Due to the instability of the quadrilateral, it is easy to deform, and the telescopic flexible stroke is large, so the expansion and folding of the bracket is more convenient! Air pressure is the atmospheric pressure acting on a unit area. The power of the lifting table is a pneumatic transmission principle. The pneumatic transmission uses compressed gas as the working medium and a fluid transmission that transmits power or information by the pressure of the gas. The power transmission system is to send compressed gas to pneumatic actuators through pipes and control valves, and convert the pressure energy of compressed gas into mechanical energy to work. Hydraulic transmission uses liquid as the working medium to transmit power. In this experiment, the syringe can be regarded as an actuator of a hydraulic system. After the water is injected into the syringe, it is equivalent to a hydraulic cylinder, which converts the pressure of the liquid into mechanical energy.

Experimental steps:

1. Know the experimental equipment: quadrilateral bracket, plastic box, plastic box with holes, hose, syringe, syringe with holes, villain model, screws, nuts, foam glue, long screws.

2. Fix the quadrilateral bracket to the plastic box with holes with screws to form the bottom of the lifting platform.

3. Fix the upper end of the quadrilateral bracket to the plastic box with a long screw (when the long screw passes through the bracket and one side of the plastic box, insert the syringe into the screw and fix it to the middle position, then screw the nut on the other side. , In this way, the entire bracket part of the lifting platform is assembled.
4. Connect one end of the hose with the perforated syringe and the other end with the syringe. The bracket and the power device (syringe) are combined together to form a complete lifting table system. Of course, it is also possible to inject water into the syringe. When the syringe is pushed, the water is pushed into the syringe with a hole, thereby driving the bracket to rise, which becomes a hydraulic lifting table system.

Tips: When assembling the bracket, don't forget to put the film between the screws, so as not to loose the bracket and affect the experimental effect. The screw between the plastic box and the bracket cannot be tightened too tightly, otherwise the bracket cannot be moved.