The structure of the core barrel is generally divided into single - acting double core tube and most of the fishing apparatus. The double tube section consists of an outer tube assembly and an inner tube assembly. The outer pipe assembly includes; The main structure and working principle of the cartridge stopper, cartridge chamber, stable joint outer pipe, diamond reamer and diamond bit are as follows:
(1) Spear structure is composed of spear head and recovery spring. When coring, the fishing device is lowered to the upper part of the inner tube assembly in the drill pipe, and the fishing hook grasps the fishing spear, lifts the fishing device up, picks up the recycling card barrel, and inwardly compressing the cartridge card, so that the inner tube assembly and the outer tube are separated, so that the inner tube assembly is lifted up.
(2) The clip structure is mainly composed of the clip frame, clip, spring and other components. Its function is that when the inner tube sits on the outer tube, the clip expands with the help of the elastic force of the expansion spring and sticks to the inner wall of the clip chamber, so that the drilling tool can achieve positioning.
(3) Buffer structure by spring, locking mother, split pin composition. Protecting the inner tube when pulling the core.
(4) Single action structure is realized by two pairs of thrust bearings.
(5) Adjust the length of the inner pipe assembly and the outer pipe assembly of the structure, and fine-tune the lower shaft and the locking mother to achieve the gap required by the end of the spring seat and the step inside the drill bit.
(6) The fishing structure, also known as the fishing device, is mainly composed of fishing hook, hammer and safety rope. The fishing hook is used to hold the spearhead while fishing the inner pipe, and the weight is used to speed up the fishing device's descent to save fishing time. The safety rope is a thin rope. When the inner pipe is stuck for some reason and cannot be lifted, the safety rope can be forcefully lifted and then the drill can be lifted.
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Whether it is city streets, shopping malls, residential areas or campuses, monitoring systems have become a part of people's lives. The "Safe City" project, which focuses on the construction of video surveillance systems, is gradually advancing from the developed eastern cities to the midwest and second and third tier cities. With the beginning of the achievements of the "Skynet Project" across the country, the year for the beginning of the "Twelfth Five-Year Plan" was painted with a perfect ending, which also opened up new hope for 2012.
Skynet Engineering builds a three-dimensional monitoring system Skynet Engineering, as its name suggests, uses video surveillance systems to monitor and record images in fixed areas in real time, and transmits video images back to the monitoring center as a powerful evidence for crime detection. All regions in the country will network video surveillance and public security systems, and create a social security prevention and control system that combines point-line integration, physical defense technology prevention and prevention, integration of prevention and control, and online and offline integration. At the same time, the video surveillance system can also make temporary adjustments. In order to monitor the normal city, road, and community needs, some cameras are used for monitoring in the safe city.
Skynet's High Definition and Standardization With Chengdu as an example, from 2006 to now, over a period of five years, it has built a Skynet project with more than 160,000 Skynet probes and social probes. In order to meet the safety needs of “urban and rural integration†construction and urbanization construction, monitoring probes cover party and government agencies, key units, major traffic intersections, streets, hospitals, schools, squares, and stations and other public places; and establish multi-level monitoring and command centers. The government, streets, campuses and other places are connected to create a multi-dimensional and multi-dimensional three-dimensional skynet monitoring system.
Skynet Project "HD"
With the increasing popularity of high-definition surveillance, high-definition surveillance cameras have also been widely used in Skynet's projects. The Changsha Municipal Public Safety Video and Image Information System Management Regulations was formally promulgated and implemented in early 2012. The Changsha Skynet project has been highly valued by the municipal government; according to the plan, only the high-definition monitoring probe for government financial investment will reach 30,000. . This is also the first area in this year to launch the high-definition Skynet project. Nanchong City optimised the “Skynet†project and replaced some ordinary probes with high-definition probes to achieve networked monitoring in key areas.
Skynet project "standardization"
Skynet project is not groundless. The construction of a huge project requires first-hand market research and field trips. Whether it is the public security project or the construction of a safe city, it is determined where to install the monitoring probe and how much it needs to be accurately analyzed. Maximize monitoring with minimal product. In the process of monitoring and popularizing, when there is a conflict between security issues and privacy, it needs a reasonable specification to guide. How to maximize the protection of citizen privacy can also play a good role in security monitoring. The high-speed speeding "caught milk brother" was photographed, and the video evidence was not well kept and spread to the Internet. This typical negative teaching material has caused the entire industry to be surprised. The standardization of video image management methods and the correct preservation of image resources are imminent.
We live in the city, under the monitoring probe is our busy figure. Surveillance probes have become a part of our lives and provide peace and quiet to the city. From Beijing to Guangzhou, from the coastal area to the inland areas, Skynet's engineering has been further developed step by step, from the first-tier cities to the second and third-tier cities.
The nation’s first metropolitan-class all-digital monitoring system, the Wuhan City Video Surveillance System, was accepted by the expert group. This news brought a glimmer of hope to the security market in the winter. According to reports, Wuhan has an average of more than 500 cameras per square kilometer; in 2012, there were 500,000 cameras in public places in Chongqing; there were 300,000 monitoring probes in major streets, shopping malls, and communities in Beijing; and there were nearly 200,000 monitoring probes in Shanghai and Shenzhen. . Whether Beijing, Shanghai, Chongqing, Wuhan or Guangzhou, city surveillance has become an indisputable fact. The establishment of a safe city is also one of the important projects for the development of the “Twelfth Five-Year Plan.†The ultimate realization of “Smart City†is the common goal of all security companies and governments.