The torsion spring is a mechanical force-storage structure, mainly used in ancient artillery and other types of long-range weapons. The torsion spring stores the force by twisting or rotating the elastic material with soft material and high toughness, and uses the lever principle to release, so that the emitted object has certain mechanical energy.
Structure principle
With the development of hyperthyroidism and the emergence of fortifications, Eastern developed composite bows made of horns, tendons, horns, hardwoods, and silk. This is a leaf spring structure that combines the advantages of various biological materials. The compound bow is very powerful, and foreign experiments show that the energy of the compound bow shot ten times smaller than that of the compound bow is more than double that of the 740 pound pull force (this is because the steel's energy storage rate is very poor, not One-tenth of the material to the tendons, the steel bow itself is very heavy, a lot of energy is consumed in the bow instead of being transmitted to the arrow). Unlike the East, Greece lacks individual bows*. The so-called Greek bow has no evidence beyond the history of a person’s dictation, and the bow of the abdomen, according to Hero’s description, is the bow, power, and Oriental of the ramie.* In contrast, the craftsmen invented by Dionysus have used torsion springs for the first time, using two torsion moments created by a stretched stirrup, leather string, or animal tendon, to drive the arm to drive the bowstring projectile. Or arrow stone.
The Greeks designed the *gun with a solid support. The main beam was placed on the support. Two torsion spring groups were installed on both sides of the front end. Each spring group drove an * arm. The end of the * arm was connected with a bowstring and the middle of the bow. It is a mesh bag that contains projectiles.
history
The emergence of torsion springs evolved from relying on the elastic deformation of the arm to the launching force of the torsion spring using the lever principle, which greatly increased the power of * but could not be compared with that of the compound bow because the structure was too complicated and cumbersome, even for field use. The light * guns require two or three people to operate. For example, there are about 5,000 members of a Roman legion, only 40 to 50 cannons are equipped, and the proportion is less than 1%. The firing speed of the cannon is very slow, and there will not be too much in the field. In the battle of Carlyle, the Romans were helpless in the Persians' intensive bows, and the Cannon did not play any role at all. The heavy-duty guns that fired the stone bombs were also quickly eliminated after they were introduced into the lever trebuchet from the East. In the matter of bow material, Europe has not solved it. Later, the Western crossbow used steel with poor storage capacity. Under 740 pounds of tension, half of the compound bow power that is less than ten times smaller than the pull force was not reached. Therefore, China* once led the world in 2000, and eventually the European ** did not even keep up with the level of the Chinese bow.
Some people in Rome have done experiments abroad:
“The Greek giant of the restoration of the general Prussian Schramm in 1916. This giant of the Second Punic War period was not much different in institutional terms from the car used in the first century AD*. Part of the latter began. An iron frame was used, which was much longer in life. This giant shot an arrow 285 meters away in a 1979 test."
"Schramm has achieved very good results with his rejuvenated products. His three-fold wide * can shoot 27-inch (70CM) arrows out of 370 meters. His biggest catapult can throw 1.8kg stones. It was only 300 meters away. Unfortunately, these two restoration products were destroyed in World War II."
It can be seen that shooting ordinary arrows at 70 centimeters can not even reach the level of the eastern individual soldier*.
application
The modern torsion spring torsion bar is made of highly elastic steel. The form changes greatly. There are springs in the mechanical watch, power springs in the toy top, and torsion bars in tanks and cars.
The torsion bar is small and has a large torque and is a good tool for the transportation of shocks.