The planar linkage mechanism is a mechanism that consists of several rigid components connected through rotating pairs and moving pairs, and the motion planes of each point on each component are parallel to each other. It is also called a planar low-pair mechanism. The low pair has the advantages of low pressure, light wear, easy processing, and the geometric shape can ensure its own sealing. Therefore, the planar linkage mechanism is widely used in various machinery and instruments. Compared with the high-speed mechanism, it is difficult to accurately realize the expected movement and the design calculation is complicated. The most commonly used planar linkage mechanism is the four-bar mechanism, which has the smallest number of components and can convert motion.
There are some connecting rods placed on some rotating shafts, and there are no connecting rods placed on some rotating shafts. Some parts may still be missing. There are some connecting rods placed under the box.
There are places where the crank is placed, and other places where the rocker is placed. Where to place what kind of connecting rod, the necessary conditions for the existence of the crank are used here. If the sum of the lengths of the shortest rod and the longest rod in the hinged four-bar mechanism is less than or equal to the sum of the lengths of the other two rods, then when the adjacent rod of the shortest rod is the frame, a crank-rocker mechanism is formed; when the shortest rod is the frame , forming a double crank mechanism; when the shortest rod is taken as the connecting rod, a double rocker mechanism is formed.
After he connected the crank-rocker mechanism, he started the switch, the active part rotated, driving the driven part to swing, and finally the middle door opened in translation.
He hurriedly pointed the detector inside.
There is a large space inside. From a distance, there are some forging equipment, assembly equipment, etc.
The detector includes an infrared thermal imager and an electromagnetic detector. According to the detection results of the infrared thermal imager, some temperatures inside have reached more than 2,000 degrees. Is this a steel-making furnace?
The steelmaking furnace can reach 2000 degrees. Steelmaking refers to controlling the carbon content, generally less than 2%, eliminating harmful elements such as P, S, O, and N, and retaining or increasing Si, M
,Ni,C
Wait for beneficial elements and adjust the proportions between elements for optimal performance.
The horizontal door is closed. The detector cannot detect the signal. It seems that the Pillar Mine is also a shielding layer, no wonder it can't be found outside.
Inside the gate, it looks like an automated manufacturing workshop, just like the workshop of a mechanical processing factory. But there is also a steel-making furnace. There is a cantilever or gantry-type small platform between the furnace cover and the electrode cross arm, where the electrodes are connected and the opening and closing mechanism of the furnace top is placed. The furnace body is placed on the tilting furnace base at its lower part. The upper platform of the furnace base is the steelmaking operating platform. By operating the tilting mechanism, the furnace body and the electrode column system as a whole can be tilted toward the back of the furnace to tap out steel or toward the front of the furnace to tap out slag. A railway line is laid between the concrete foundations, and pillar ore transport trucks and slag trucks enter and exit along this line.
There are production lines, CNC machine tools, and robots in the manufacturing workshop. The manufacturing workshop manufactures, assembles and welds various parts. The last station is to assemble the engineering vehicle. There are earthmoving trucks, cranes, excavators, loaders, etc.
He saw loaders and earth-moving trucks being assembled. Loaders are mainly used to shovel, load, unload, and transport bulk materials such as earth and stone. They can also perform light shoveling operations on rocks and hard soil. It can also complete the work of bulldozing, lifting, loading and unloading other materials. In highway construction, it is mainly used for filling and excavation of roadbed projects, aggregate and loading operations in asphalt and cement concrete yards. It has the advantages of fast operating speed, good maneuverability and light operation. An earthmoving truck is a load-bearing truck that hauls earth and stone and other infrastructure materials or earth and stone garbage at the construction site. The truck body at the back is used to transport earth and stone.
It turns out that this is a production factory that secretly manufactures engineering vehicles. It’s also stealing minerals. The construction trucks that were said to be coming from the north were actually transported from the mine after production. This kind of mineral theft is difficult to detect. After checking the inside of the engineering vehicle, no other minerals were transported. The engineering vehicle itself is manufactured in Pillar Mine.
The heat source of the steelmaking furnace in this factory comes from heat distribution stones. Just when the temperature in one place changes, the temperature in other places also changes. Some places have high temperatures and some have low temperatures. The electrical energy in this factory is transmitted by electric distribution stones. The cables are interrupted by stones, transmitting electrical energy to the factory without being discovered by others.
Pu Lei returned to the passage and took down the camera on the wall of the passage. From the shooting records, we can indeed see records of Feng Bing coming in and out.
Pu Lei and Peng Qing told the machinery processing factory and the detectives what they found. Agents tracked where the feature vehicles were headed and eventually discovered they were heading to Ice City.
They closed the processing plant under the mine and arrested Feng Bing. The Mining City Pillar Mine Incident has come to an end. Pulei, Pengqing, Duanzhu, machinery processing factories, and mining towns have returned to their usual lives.
Duan Zhu continued to make bolts, nuts and other connecting machinery. Some lightweight power-assisted handling equipment is also needed. The power-assisted machinery still needs to go to Mr. Liang for help.
Duan Zhu drove to Yucheng. Yucheng and Guangrongcheng are tourist cities. Licheng is a mining city. Huixiang is an industrial city. Tengju City is a cultural city. Yucheng is close to Qiongcheng and Licheng, and has materials and supplies, as well as many high-tech enterprises.
Duan Zhu asked: "Mr. Liang, where are you specifically?"
Liang Ting said: "It's 5 kilometers north of your original school, in the High-tech Park."
Duan Zhu said: "Okay."
They arrived at Mr. Liang's new office. It still has the same style as the original, with various flowers and plants placed next to the windowsill, and the fragrance is fragrant. Lots of sunshine, warm tones, and brightly colored walls and furniture. There is a row of photos taken of him from various places in China on the wall.
Mr. Liang opened the curtain on the other side and saw the office area. Colorful tables. The ceiling is high, there are several chandeliers, especially the colorful wall lights in the rest area, which looks like a singing hall rather than an office.
Duan Zhu said: "Mr. Liang, after you changed your working location, the office layout has become more beautiful."
Liang Ting said: "That's right, I am a lifestyle person. The office is also full of humanized design."
Duan Zhu said: “It’s more than just a humanized design, it’s a cheerful one.”
Liang Ting said: "How is your work lately?"
Duan Zhu said: "It's very good. We are developing parts for prefabricated buildings. However, some buildings are relatively heavy and may still need to be transported with the help of a power-assisted machine."
Liang Ting said: "Okay, that's no problem. Has the incident of the loss of the pillar mine been resolved?"
Duan Zhu said: "The reason has been found. Someone built some mechanical processing equipment under the pillar mine. The pillar mine was made into an engineering vehicle, and then it was driven from the underground passage to the iron ore mine, and then came out, so just I didn’t find it at first.”
Liang Ting said: "Are all the current equipment so advanced?"
Duan Zhu said: "After investigation, Pu Lei and Peng Qing found out that Feng Bing was in their group."
Liang Ting said: "Huh? I've seen Feng Bing. It's too dangerous."
Duan Zhu went to Liao Qianhui and told him what he had seen and heard recently.
"It's so amazing, encountering so many strange things in the mining town."
"Originally, these materials were going to be transported to Ice City. I don't know what kind of building they were going to build. By the way, do you want to visit Ice City?"
"I want to visit, but I've been busy lately. Let's go there later during the annual vacation."
