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 it is a bicycle, bus, or car, these means of transportation are by wheels to achieve transportation.
Now it is difficult to prove who actually invented the wheel, one thing is certain, the invention of the wheel is a slow and long evolutionary process, initially people found that rolling than sliding to save a lot of energy.
People in the heavy under the log, through the rolling of the log transport items, and later from the log to get inspired by the invention of the wheel, the wheel should be and the car is at the same time, a single wheel is not much use, will be a combination of several wheels plus the axle, can maximize its role.
It is difficult to phenomenon, assuming that mankind has not invented the wheel, whether ancient or modern, what our society would be like, the role of the wheel is self-evident, but more importantly in the significance of the society.
The emergence of the wheel, so that mankind can not only travel long distances, but also can transport heavier objects to more distant places, so large-scale cities, trade and commerce has been developed, the wheel is the simplest but a remarkable invention, its invention directly or indirectly determines the development and progress of the society, it is clear that the emergence of the wheel is one of the important symbols of the progress of human civilization.
In the wheel development process found that the wheel can only run in a straight line, in the handling of heavy objects in the direction of the change is more difficult, people invented a wheel with a steering structure, that is, casters or universal wheel, the invention of the casters so that the handling efficiency is greatly improved, with the development of the industry the application is also more and more widely used, and has become one of the indispensable parts of the casters have also become a special industry.
Casters include movable casters, fixed casters and movable casters with brakes, movable casters are what we call universal casters, which can rotate 360°, fixed casters are also called directional casters, which have no swivel structure and can’t be rotated, and are usually used with these two kinds of casters.
The main components of casters are:
Anti-tangling cover: used to avoid objects entering into the gap between the wheel and the bracket, to protect the wheel can rotate freely.
Brakes: Brakes that lock the steering and hold the wheel in place.
Support bracket: mounted on the conveyance and attached to the wheel.
Wheel: Made of rubber or nylon, etc., the wheel rotates to transport the goods.
Bearings: Sliding steel balls inside the bearings to carry heavy loads and save steering effort.
Axle: connects the bearings with the support frame to carry the gravity of the goods.
Casters can be mainly divided into medical casters, industrial casters, furniture casters, supermarket casters, etc. Medical casters are required to be ultra-quiet, chemical-resistant, and flexible in steering.
To understand how industrial universal casters are manufactured
Firstly, the steel plate is punched out on the press according to the size of the sheet, and at the same time, the round holes are punched out on the sheet, and most of them are made of Q235 material.
The stamped sheet is placed on the press mold, and the bracket, brake sheet is stamped into shape.
Stamping molding bowl-shaped disk in a circle first into the lubricating oil, into the steel ball, the number of steel ball indispensable, and then mount the bracket to the bowl-shaped disk, the bracket and then into the lubricating oil and steel ball.
After installing the steel ball and then installing the stopper and washer, use a hydraulic press to crack the cylinder in the bowl-shaped disk, riveting the small bowl to the bracket, and the steel ball will also be sealed inside the bracket and bowl-shaped disk.
The rubber will be melted into the machine, through the mold pressed into the rubber wheel, rubber wheel molding line at the burrs should be polished smooth, (the wheel material is also pp, pvc, pu, nylon and other materials)
In the center hole of the rubber wheel to install a good axle ring, with a screw to connect the rubber wheel and bracket together, install the nut, and finally in the machine on the caster test, the caster is ready.
You will find that the force point of the universal caster is not in the center of the caster, why will be eccentric, so that it will be more energy-saving or not eccentric can not be steered, “concentric wheels” do not need external forces can be arbitrary steering, which will cause the car does not go straight will be swaying left and right, wheel eccentric design is to increase the torque, the greater the distance between the eccentric turning more The larger the distance of eccentricity, the more labor-saving.
The rolling direction of the casters should be consistent with the forward direction, once the car forward direction and casters rolling direction is not consistent, the friction on the ground will generate torque in the rotating shaft, the universal wheel will be rotated through the steel ball pushed to the same position with the walking direction.
Usually casters are installed in front of the directional wheel, the back is a universal wheel, in the promotion of the back of the universal wheel to control the direction of the front directional wheel for walking, so that the required torque is smaller, it will be more labor-saving, but there are also like a baby stroller is a universal wheel in the front of the four casters of the supermarket shopping carts are universal wheels, which are based on the use of the environment and habits of the adjustments made.
When it comes to the wheel we all know it is round, if the wheel can also be other shapes, you will believe? We all know that the triangle is characterized by stability, what would be the effect if the triangle is made into a wheel.
This triangle is called the arc triangle, although not a circle, but its three sides are equal in length, and the effect of the round wheel is the same, then why not see this wheel le?
If made into a triangle wheel its rolling center and the height of the ground is not the same, which requires the center axis can be moved up and down, so that the triangle wheel is not suitable for making wheels.
And then look at what effect the square wheels one thinks of would have, they all satisfy that the axis of rotation is in a straight line, and that’s what it feels like when you’re really on the road.
Everyone is brainstorming a lot of wheels, is it possible for them to be realized and what other kinds of wheels do you think could be made?
Post time: Oct-20-2023