“If you give me a fulcrum, I can move the whole earth”!

When explaining the principle of leverage, Archimedes even said so proudly. In fact, if you want to be able to move the earth, the hardness of this fulcrum is also very important. Have you ever imagined what it would be like to use a car or a mini car as a support point for experiments?

Recently, Chery New Energy has held several interesting events. They conducted two consecutive tests on its mini electric vehicle, Chery Ant. The first one was to use a 7.6-ton container to statically press the roof of the Little Ant. As a result, the Little Ant's body structure was intact and completed the ultimate pressure resistance challenge; the second one was to replicate the "Archimedes' Lever Principle", mainly using It is used to test whether the all-aluminum body of Little Ant can withstand extreme pressure.

The experiment of replicating Archimedes's lever principle uses the vehicle as the fulcrum of the lever and hangs heavy objects on one or both sides of the lever to test the pressure-bearing capacity of the vehicle body. Whether it can complete the challenge places high demands on the body materials and structure.

In the first round of labor-saving lever testing, the fulcrum position was 3 meters, the lever arm was 15 meters, the total length of the lever was 18 meters, and a Tesla Model S with a dead weight of 2.1 tons was hung on the front end of the lever. The weight of the lever + fulcrum structure + link guide wheel is about 0.8 tons. The weight of the lever with long force arm on the right side is about 0.5 tons. In addition, taking into account the weight of the lever, the downward pulling force is expected to be about 0.3 tons. When three "strong men" lifted the Model S with the Chery Ant as a fulcrum, the weight on the roof of the Ant reached approximately 3.2 tons (2.1 tons + 0.8 tons + 0.5 tons).

In the second round of labor-saving lever testing, the Tesla Model S was replaced by a GMC CCKW 353 truck with a dead weight of about 5 tons. When the staff tilted the truck, the roof of the Little Ant truck withstood the load. The weight reaches about 6.3 tons (5 tons + 0.8 tons + 0.5 tons).

It is worth noting that according to the scientific algorithm of labor-saving levers, variables such as "angular velocity" should also be added. Therefore, in these two rounds of tests, the weight borne by the Chery Ant's roof was even greater than the above. 25% more data.

In the third round of equal-force lever testing, the total dead weight of the lever, guide wheel, etc. was 0.25 tons. A 2.5-ton Range Rover Executive Edition was lifted on each side, with Chery Little Ant acting as a balance At the fulcrum, the conservative weight of the vehicle reaches about 5.25 tons (2.5 tons + 0.25 tons + 2.5 tons).

In three rounds of tests, the body structure of Chery Ant showed no morphological changes and performed well. Another brand of the same price range that was tested at the same venue, in the second round of the truck labor-saving lever challenge, the roof had already undergone serious deformation, and the top side beams broke under the heavy pressure, so they directly gave up the third round and so on. Force lever test.

Why is the Chery Ant, just like its name, so "small but powerful" and so "iron-framed"? The answer is: Chery New Energy, which puts safety first, created an "aluminum cabin" for Little Ant, which means an aviation-grade all-aluminum body. It is also the "first mass-produced all-aluminum body" in China. Chery New Energy With completely independent intellectual property rights, this manufacturing technology has won the first prize for China Automotive Industry Science and Technology Progress Award and was successfully selected into the National Development and Reform Commission’s Green Technology Promotion Catalog.

Structurally, Chery Ant adopts an all-aluminum profile frame body, and is equipped with a unique four-wheel independent suspension in its class, a unique falcon-shaped multi-cavity cross-section structure, and a weight reduction of 30%. , the stiffness is increased by 20%, the material utilization rate reaches 96%, and the recyclability rate of the aluminum-based body reaches 100%.

In terms of materials, the main structure of the body frame is made of 6 series aluminum alloy, with a utilization rate of 68.7%; the skin structure of the body frame is made of 5 series aluminum alloy; Usibor1500P hot-formed steel plate is used in body B Column outer plate; PP+GF polymer composite material is used in the front-end module and front and rear covers.

In terms of performance, this all-aluminum body manufacturing technology enables the torsional stiffness of the body to reach 2697Nm/°, and the body size welding quality qualification rate is 92%.

In addition, the external covering parts of Chery Ant use polymer composite materials, which further reduces the weight of the vehicle by 10%-20%. It is also high-strength, does not peel off paint, and is anti-dent. The advantages of changing and not rusting.

Written at the end:

It is precisely because of Chery New Energy’s core technologies in the above aspects that Chery Little Ant has easily passed various extreme pressure tests, which is very important for Chery New Energy. For consumers, Chery Ant brings a stronger sense of security. Although a mini car is small, it has a big safety responsibility. How about this? What do you think of such a leverage test?

This article comes from the author of Yichehao. The copyright belongs to the author. Please contact the author for any form of reprinting.

The content only represents the author's opinion and has nothing to do with Bitauto