Throughout the history of human development, people have created many great inventions, and these inventions have greatly changed our lives, the wheel is one of them, your daily travel, whether bicycle, bus, or driving, these vehicles are transported by wheels.
It is hard to tell who invented the wheel. One thing is certain that the invention of the wheel is a slow and long evolution, and it was initially found that rolling takes a lot less effort than sliding.
People in the heavy objects down the log, through the log rolling transportation of goods, and later from the log inspired invented the wheel, the wheel should be at the same time as the car, a single wheel is not useful, several wheels combined with the wheel axle, can play its role.
It is difficult to assume that human beings have not invented the wheel, whether ancient or modern, what our society will be like, the role of the wheel is self-evident, but more important lies in the meaning to the society.
The appearance of the wheel, make human can not only travel, and can transport heavier objects to further places, so large-scale cities, trade has developed, the wheel is the simplest but a great invention, its invention directly or indirectly determines the social development and progress, obviously the emergence of the wheel is one of the important signs of human civilization progress.
Found in the process of wheel development, wheel can only run in a straight line, when the direction of heavy change is difficult, people invented the wheel with steering structure, namely caster or universal wheel, caster invention greatly improve handling efficiency, with the development of industry is also more and more widely, become one of the indispensable parts, caster has become a special industry.
Caster includes movable casters, fixed caster and movable brake caster, moving caster is what we call universal wheel, it can rotate 360°, fixed caster is also called directional caster, it has no rotating structure, can not rotate, is usually used with these two casters.
The main components of the casters are:
Anti-wrapping cover: to avoid the object into the gap between the wheel and the bracket, to protect the wheel can rotate freely.
Bralock: a brake that locks steering and holds wheels.
Support frame: mounted on the transport, connected to the wheels.
Wheels: Made of materials such as rubber or nylon to transport goods by its rotation.
Bearing: slide to handle heavy load and labor-saving steering.
Shaft: connecting the bearing and the support frame, bearing the gravity of the goods.
Caster can be mainly divided into medical caster, industrial caster, furniture caster, supermarket caster, etc. Medical caster requirements are ultra-silent, chemical corrosion resistance, flexible steering.
Find out how industrial universal casters are made
1. Press the steel plate out on the punch bed according to the size, and punch out the round hole on the sheet, mostly with Q235 material.
2. Put the stamped sheet on the punch mold, and punch the bracket and brake sheet.
3. Put lubricating oil into the stamped bowl plate. The number of steel beads is indispensable, then put the support on the bowl plate, and then put lubricating oil and steel beads on the support.
4. After installing the steel beads, install the baffle and gasket, split the cylinder of the bowl plate with the hydraulic machine, and riveting the small bowl with the bracket together. The steel beads will also be sealed in the bracket and bowl plate.
5. Put the rubber into the machine to melt and press it into a rubber wheel through the mold. The wool edges of the rubber wheel closing should be polished smooth. (the wheel also has PP, PA, PU, TPR, nylon, pig iron, cast steel, phenolic, etc.)
6. Install the shaft in the center hole of the rubber wheel, connect the rubber wheel with the bracket with the screw, and install the screw cap. Finally, the machine tests the caster, and the caster is done.
You will find that universal caster force point is not in the center of the caster, why eccentric, this will be more effort or not eccentric cannot turn, “concentric wheel” need no external force can turn, this will cause the car not walk straight line will shake, wheel eccentric design is to increase the torque, the greater the eccentric turn the more effort.
The rolling direction of the caster should be consistent with the forward direction. Once the forward direction of the car is not consistent with the rolling direction of the caster, the friction on the ground will produce torque on the rotating axis, and the universal wheel will be pushed to the same position with the walking direction through the steel bead rotation.
Usually the caster installation is the directional wheel, behind is the universal wheel, behind the universal wheel to control direction, directional wheel for walking, so the required torque is smaller, will be more effort, but also like a stroller is universal wheel in front, the supermarket shopping cart four casters are universal wheel, this is according to the use environment and habits.
Post time: Apr-19-2022