There are many kinds of multi-bow bed crossbows in Wu Yao in the Northern Song Dynasty, among which the most powerful three-bow bed crossbow is also called "Ba Niu crossbow", which requires 100 people to twist the shaft and pull the string. The arrow "Tieling with wooden pole" is known as "one gun and three swords", which is roughly like a javelin and three iron ridges are like three swords. The crossbow can also shoot "step arrows" and nail them to the wall in rows. The siege soldiers climbed up by climbing.
The bed crossbow, also known as the bed crossbow, first appeared in China during the Warring States Period. It is a large special crossbow installed on the launch pad or vehicle. The main purpose of bed crossbows is to attack cities.
Song Rentong called the crossbow car "bed crossbow" or "bed crossbow". A crossbow gun is often equipped with two bows or three bows, and it is stronger than the previous generation to use the combined force of multiple bows to launch arrows. According to the analysis and research of modern people, the structure of multi-bow bed crossbow is very clever, and the tension of bowstring may use pulley.
According to the general introduction of martial arts classics, there is a special person in charge of aiming and launching crossbows, and pulling the trigger requires a huge axe. Soldiers who use bed crossbows are a special class in the Song army, called "bed crossbow soldiers".
In the battle of the Zen Temple in the first year of Jingdezhen, Song Jun installed a crossbow in Chengtou. Liao army attacked the city. The soldiers guarding the crossbow were surprised. In desperation, they hit their teeth and sent crossbows, and arrows thundered out. Unexpectedly, LiLin Xiao, the leader of Liao array, was killed. Because the Lord was killed, Liao people didn't want to fight, so they made peace with the Northern Song Dynasty, and the two sides signed the famous "Temple League".
During the Kaibao period of the Northern Song Dynasty (968-975 AD), Wei did not improve the bed crossbow, and the range was greatly improved. "Biography of Song Shiwei Pi" records: "The old bed crossbow stopped shooting 700 steps, which increased Pi by a thousand steps." In Song Dynasty, the stride1.536m and the stride1.536m were one of the highest ranges that ancient long-range weapons could reach.
In the west, the Roman crossbow was mostly used for hunting, and it didn't play a huge role until the Crusades in 1 1 century. Its three-bow crossbow appeared more than five centuries later than China, and its range was only one third of that of China's three-bow bed crossbow.