The Rise of Heavy Industry 1980

This advice goes to the hearts of many journalists, for whom the process is not important, the result is the news worth reporting, and if the two hours are over, the fool is willing to wait three more hours.

Yan Hengshan didn't agree immediately, because it involved a professional field, and he needed to ask Zong Shiguo's opinion. Zong Shiguo thought for a while and said, "This suggestion is feasible.

Yan Hengshan announced that he would follow Danio Griffin's opinion.

In this way, the comprehensive performance running experiment officially began, and the first item was twice the load. Two workers dressed in overalls, yellow rubber shoes and hard hats each walked to the two experimental benches, shouted a trumpet, and started the power system at the same time.

The power source of the power system is the diesel engine, and the gearbox is installed in the next stage of the diesel engine, which is connected by a servo motor at the position of the output shaft, and the role of the servo motor is to apply a load to the power system, this time the experimental load is twice the rated load.

The powertrain, which is placed on two benches, emits a rhythmic "thud-thump" sound, with little difference, indicating that the CC20 and SP gearboxes perform similarly at twice the load.

Of course, this is just the beginning, as the final conclusion will not be made until an hour later.

The initial novelty faded away, and many media reporters did not find beauty in the sound of "sudden", but only a harsh noise in their ears.

However, in the ears of Changhai Agricultural Machinery or Daulson and others, these sounds have a special meaning. Ma Sanyuan stood next to the bench, quietly listening to the sound of the engine, and whispered to Zong Shiguo from time to time.

Danio Griffin on the other side also listened attentively to the sound coming from the gearbox, and occasionally said a few words to the translator next to him, and the translator named Don Anna had a small notebook in her hand, and she would write down what Danio said.

Zhang Miaomiao knows that the two gearboxes operate under double load, and the performance is almost the same, if there is a difference, it must be noise, but maybe the distance between the two sets of benches is too close, she tries to distinguish the difference between the two sounds, but she can't distinguish them at all.

"You can't hear it, pay attention there!" Wang Chaoyang's voice suddenly sounded from the side.

Zhang Miaomiao was stunned, followed Wang Chaoyang's gaze, and found that Wang Chaoyang was observing the top cover of the gearbox. However, Zhang Miaomiao was even more puzzled, and she didn't know what the purpose of looking at the top cover was.

"Look at the cable on the top cover. Wang Chaoyang's voice sounded again.

Since the lab bench requires a power supply, the cable runs right across the top cover of the gearbox. The 220-volt three-phase AC cable, which is thicker than a thumb, rests on the top cover of the gearbox, and vibrates rhythmically with the sound of the system.

Zhang Miaomiao observed intently for a moment, and her heart secretly rose.

Because she found that the cable on the CC20-4 gearbox was shaking more than the Dolson SP.

This indicates that CC20-4 itself flutters more than Daurson's SP.

The reason why Zhang Miaomiao is secretly worried is because a large tremor amplitude is not a very good phenomenon. The tremor amplitude is large, which can affect the strength of the structure and cause noise problems...... This is almost the biggest headache for mechanical engineers.

In an instant, Zhang Miaomiao made a "coax" in her mind, and a layer of fine sweat like rice grains appeared on her forehead.

Has the CC20-4 gearbox already lost?

"Don't worry, it's not entirely bad. At this time, Wang Chaoyang gently patted Zhang Miaomiao's shoulder and said in a low voice.

"But ......," Zhang Miaomiao still wanted to speak.

"Don't worry, calm down. Wang Chaoyang said again.

"......" Zhang Miaomiao nodded lightly, but she couldn't hold her breath, her eyes involuntarily wandered between the cables of the two gearboxes, the cable on the top cover of the CC20-4 was still shaking, the amplitude was still very large, Zhang Miaomiao tried to control her emotions, but her heart was beating suddenly, and if she continued like this, Zhang Miaomiao was afraid that she would not be able to hold on.

Fortunately, at this moment, a hand reached over and grabbed Zhang Miaomiao's wrist, and Zhang Miaomiao didn't need to look to know who that hand belonged to. In the past, Zhang Miaomiao would definitely break free, but at this moment, she would rather be held by a big hand, so that her heartbeat can be a little smoother.

An hour of running time passed, and the double-load project ended.

Yan Hengshan announced the results in public, and the performance of the two gearboxes was the same, and they were tied in this running experiment. The next item will be subjected to an ultimate load test.

This result relieved Zhang Miaomiao's nervousness, and it seemed that no one else was aware of the shaking amplitude except for him and Wang Chaoyang.

"After this test, we must continue to improve the chassis, and the vibration must be eliminated!" Zhang Miaomiao secretly made up her mind.

At the same time, the next run-in experiment has begun. Different from the previous experiment, the experimental load is not fixed, and in the process of operation, the load torque is continuously increased by the servo motor until the torque limit is reached!

This experiment is also called the limit failure experiment in all running and closing experiments. Because during the loading process, when the load reaches a certain peak, it is very likely to cause the transmission to fail.

As soon as the experiment began, everyone in the room began to raise their spirits, and the media reporters began to keep an eye on the bench, knowing that the results of the experiment were likely to appear in the next second.

"Of all the system running experiments, I honestly like this one the most, do you know why?" said Danio Griffin, who had been silent, to the two companions, but because of the loud voice, the others around him were also attracted to attention.

"Why, Mr. Danio?" asked Donanna.

"Because this experiment is like two knights fighting for love, they need to constantly push their limits and look for every possible opportunity to defeat their opponents. The losing side will usher in death, while the winning side will receive love...... What a chivalry!" Danio said with a smile.

"Mr. Danio, I can't see that you are still romantic!" said Don Anna with a smile.

"Industrial design is boring and boring, so of course I have to try to find romance on my own...... Oh hehe, otherwise I'll be so old-fashioned that I won't even be able to find a girlfriend!" Danio continued.

As the work of speaking, the running experiment has continued, and the private service motor continues to increase the load on the two systems, and with the increase of the load, the "Tututu" sound from the two systems is also slowly changing.

The original crisp and loud sound slowly decreased in frequency, and the sound became deeper and deeper, like hitting a quilt with a wooden stick......

Listening to this voice, the expressions of everyone present became solemn. Danio Griffin, who was still talking and laughing in front of him, retracted all his expressions at the moment and stared intently at the bench.

Zhang Miaomiao was nervous, but she had another emotion, because with the experience of the previous experiment, she was still paying attention to the vibration of the two gearboxes.