Jining Yanzhou District Dongtai Machinery Co., Ltd.

&According to the British "Daily Mail" report on March 1, the Russian girl Vasilina was born without arms. She just learned to walk and learned to eat with her feet. Her mother made a video of her hard work and uploaded it to the Internet, which quickly attracted the attention of netizens, who praised it one after another. In the video, the flexible little Vasilina first holds the fork with her toes and puts the potatoes on the fork into her mouth. But it failed the first time, not enough. Little Vasilina was not discouraged. She cleverly adjusted the position of the potatoes and fork and tried a second time. This time, she ate the beautiful potatoes easily.
Underground waterproof door
Main structure
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The door leaf of this airtight door is welded by flat steel plate, tic-tac rib plate, ring beam, etc.
The door frame is Channel steel and I-beam combined frame structure
, the tensioning device is a wedge-shaped slider for wedge tightening
, and the door pivot is supported by rolling bearings
Coal mine waterproof closed doors must meet the following requirements:
, The construction and quality of coal mine waterproof doors must meet the design requirements. Neither the gate nor the gate chamber shall leak.
. The front and rear ends of the waterproof sealed doorway of the coal mine should be built with concrete protective moldings of less than 100 meters respectively. The moldings should be filled with concrete, and there should be no empty sides or ceilings. Waterproof gate chambers and protective shields must be reinforced by grouting with high-grade cement, and the grouting pressure should meet the design requirements
. Coal mine waterproof closed doors must be designed with a stereotyped design and manufactured by a licensed manufacturer.
. A blocking grate door should be installed on the water side of the coal mine waterproof closed door. No vehicles should be parked or debris should be piled between the waterproof sealed door and the grate door. When water comes in, close the grate door first and then the waterproof door. If a two-way waterproof door is used, a grate door should be installed on both sides
The track passing through the coal mine waterproof closed door, the overhead line of the electric locomotive, etc. must be flexible and easy to remove. When the waterproof closed door is closed, it can be quickly removed through the waterproof door. The pressure resistance of various pipelines in the door wall and the gate valve installed outside the gate must be consistent with the designed pressure of the waterproof gate. Cables and pipes passing through the waterproof door wall must be tightly sealed with plugs and valves. , no leakage!
Since the broadcast of Hua Qiangu, a lot of foreign words have come out: Caterpillars are no longer called caterpillars, calling sugar babies a fortune teller is not a fortune teller, calling Mr. Yishu a psychopath is not a psychosis, being obsessed with being in love is not a It's called falling in love, it's called the calamity of life and death. From now on, losing your temper has a legitimate reason. It's not called having a bad temper, it's called being unable to control the power of the light in the body. Shandong Dongtai's waterproof sealed door is called a coal mine waterproof sealed door. Shandong Dongtai is located in the birthplace of Confucius. It adheres to the "Zhou Kong legacy" and adheres to the "Confucius personality" to produce high-quality mining waterproof doors.
Contact: Manager Xu
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