According to reports, on the evening of March 22 this year, Changsha stormed 21-year-old Shao Yang from the Beijing University for Nationalities, Yang Lijun, who was unfortunately caught in the sewer and was washed away when he passed through the road at Tujiachong Chihuang Road, Tianxin District, Changsha City. It caused public concern in the country. In addition, last July, heavy rain in Beijing washed away manhole covers and caused casualties. The road safety news events in cities around the country are attracting more and more attention. With the expansion of urbanization, the safety of urban roads has become increasingly severe.
Recently, Mr. Zhang Lianbin of Shenyang has invented a fully automatic path alert protector. Once launched, he has gained a lot of attention and received media reports such as Liaoning Satellite TV, Shenyang News, Liaoning Economy and Phoenix TV. According to Mr. Zhang’s introduction, the device is composed of shaft wall fixings, cue boards, turntables, main pressure rods and protective covers and other related accessories. It can automatically pop up the cue board when the well cover is lost or damaged, and open the bearing device protection. Completely eliminate the damage caused by the lack of manhole cover and the adverse consequences of damage to the vehicle. At present, the patent has obtained national patent approval.
Analysts believe that the automatic road well-prompt protector is different from similar products such as safety nets and other road wells, not only can prevent people from falling into the well, it has a greater safety effect on the safe driving of passing vehicles, low cost, safe and secure, Corrosion resistance does not affect downhole maintenance and other operations. According to the survey, the load-bearing capacity is not less than 2 tons, and the effective distance to the vehicle is 200 meters, which can prevent vehicle accidents. Its mass production can greatly reduce costs, and it has far-reaching significance for the promotion of people's life and property safety in a wide range of countries. With the continuous improvement of road safety, the relevant departments have paid more and more attention to road safety. The automatic road well reminder protector is causing strong concern in the market of municipal supporting facilities.
At present, the device has been implemented in some urban roads in Shenyang, which has greatly promoted road safety. In addition, Mr. Zhang Lianbin also stated that he hopes to join hands with interested individuals and cooperative companies to jointly promote the automatic path alert protector nationwide to help the safety of urban roads, protect the safety of people's lives and properties, and make their own national urbanization progress. contribution.
6. Precautions for dust ring during transportation, installation or use:
1. The wrong installation direction of the seal causes leakage.
2. During installation, foreign matters and dust mixed into the cargo pipeline enter the sealing chamber to cause leakage.
3. The seal is damaged due to poor assembly, resulting in leakage.
4. There are scratches on the surface of the sealing rod to cause leakage.
5. The piston rod is not concentric, and variable load causes leakage.
7. Common faults, causes and troubleshooting of dust ring:
1. The size of the friction pair is inappropriate, causing wear.
2. Improper thread guide angle of cylinder barrel and piston end wear the sealing ring.
3. The seal ring is worn due to improper installation guide angle of the seal.
4. The surface of cavity and piston rod is rough, with scratches and worn seals.
5. Troubleshooting: replace the seal.
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