At the beginning of the summer season, a series of accidents involving the deaths of primary and secondary school students occurred one after another, once again sounding the alarm for summer security. Judging from the tragedies that have occurred, the lack of partial family care after primary and secondary school leave is one of the reasons for the tragedy. July 2, Lianyungang City, Jiangsu Province, the accident occurred in fall death, a 9-year-old boy accidentally falling from a tall building, by a doctor died. A few days ago, the little boy had just put on summer vacation. On July 4 , a drowning accident occurred in Pu'an County, Guizhou Province. A total of four pupils died. On July 5th , two 12 -year-old boys from Weifang City, Shandong Province, drowned in water. Summer parents face child care challenges Li Rong is a teacher at a middle school in Beijing. Half a month ago, her son “graduated†from kindergarten. Because the husband and wife both went to work to care for children, she had to take her son back to her hometown on weekends. As the national primary and secondary schools welcome the summer vacation, there are many parents like Li Rong who are worried that they cannot care for their children and lead to security problems. Zhang Ying, who lives in the Chaoyang District of Beijing, sent the son of the third grade primary school to an interest class for the safety of his children during the summer vacation. Here, Zhang Ying's son has spent two summer vacations. For this phenomenon, Fu Changbo, director of the Research Center for Social Governance and Public Communication of Beijing Normal University, said that every summer vacation, many parents face a very real problem, which is how the child cares at home. In practice, due to lack of good care, some local and rural children go out to play and summer vacation accidents such as drowning should cause a great deal of concern in the society. Holidays are mainly carried out by the family Every winter and summer vacations, Zhang Ying is considering how to look at children. In fact, most parents face the same problems as him. For families with good economic conditions, parents choose to bring their children out to play, or report a few summer camps to their children. According to Zhi Zhenfeng, an associate researcher at the Institute of Legal Studies of the Chinese Academy of Social Sciences, we must first clarify that when we pay attention to this issue, during the summer vacation, the children leave school and return home. The family is mainly responsible for guardianship. Government departments and schools do not Responsibility for caregiving. In the eyes of Dr. Fu Tian, ​​a teacher at Capital Normal University, the family's responsibility for guardianship is also an obligation imposed by China’s civil law. “Parents should also exercise full custody rights in accordance with the law.†Fu Tian said that in some countries, most parents are required to fully fulfill their guardianship responsibilities. If there are cases where children under the age of 12 are left unattended at home alone and reported or discovered, social workers and even police officers will investigate; The situation is real and serious. It will deprive parents of custody and send the child to a special child care center. From a legal perspective, it is necessary to promote the formulation of the Family Education Act, clarify parental guardianship responsibilities and educational responsibilities, and corresponding mandatory and disciplinary measures; help parents understand the importance of family education and learn and master methods of family education; The establishment of professional institutions and personnel for family education, management, guidance and supervision of the implementation of family education, in particular, to take this to define a basic principle, family education is not a private matter of parents, but also a public responsibility. Encourage communities to provide non-profit care services Shang Xiaoyuan analyzed that after determining the care responsibility of the primary and middle school students at home during the summer months, this problem can be resolved at different levels. For families and difficult families whose parents are working and have no relatives or friends to help, can government departments “stretch their hands� Government departments do not provide services directly, nor do they encourage the development of profitable market mechanisms. Instead, they encourage non-profit charitable organizations to provide care services for families through various means such as tax deductions and family subsidies. Fu Changbo believes that for elementary and middle school students who are at home and abroad in the winter and summer vacations, the government departments do not provide care and maintenance services. Instead, they need to seek government departments, families, communities, and enterprises to co-govern and diversify the problems facing families. In Fu Changbo's view, what the government departments need to do is to introduce mandatory laws and regulations, clarify the guardianship responsibilities of primary and secondary school students during the winter and summer vacations, and formulate public policies that encourage charitable organizations or companies to provide care services. For example, the community is encouraged to set up public welfare organizations to provide care services for elementary and middle school students in the community during winter and summer vacations. “Non-profit nonprofit organizations are tax-free themselves. When providing care services to ordinary families in the community, even a centralized library receives a nominal fee.†Fu Changbo said that government agencies need to pass some subsidy policies or purchases. The service policy encourages the community to organize non-profit organizations. In reality, parents may also consider establishing parenting groups in the community to bring their children together, take turns in their parents, and guide children to play together or perform themed activities such as visiting museums and cultural and sports activities. The information in this article comes from the Internet and was reorganized and edited by China Rescue Equipment Network. With the continuous development of drilling production, the use conditions of drilling rigs have become more and more diversified, and various types of drilling rigs have appeared accordingly. Factors affecting the type and composition of drilling rigs include drilling method, drilling depth, borehole size and drilling tool size, and drilling area conditions (such as electricity or fuel, transportation, and meteorological conditions). Oil Drilling Rigs,Mine Drilling Rigs,Water Well Drilling Rigs,Exploration Drilling Rigs Rugao Yaou Import & Export Trade Co., Ltd , https://www.ntyaous.com
1. According to drilling method
(1) Impact drilling rigs, such as wire rope impact drilling rigs (drilling rigs), vibration drilling rigs, etc.
(2) Rotary drilling rigs, such as those used in rotary drilling.
(3) Downhole power drilling tools, such as rotary drilling tools, turbo drilling tools, screw drilling tools, electric drilling tools, etc.
2. Divided by drilling depth
(1) Ultra-deep well drilling rig. It adopts a drilling rig with a diameter of 114 mm drill pipe, a nominal drilling depth range of more than 7000 meters, and a maximum hook load of more than 4,500 kN.
(2) Deep well drilling rig. The drill rod is 114 mm in diameter, the nominal drilling depth is 4000-7000 meters or more, and the maximum hook load is 2250-4500 kN or more.
(3) Drilling rigs for medium and deep wells. It adopts a drilling rig with a diameter of 114 mm drill pipe, a nominal drilling depth range of 1500-4000 meters or more, and a maximum hook load of 900-2250 kN or more.
Three, according to power equipment
(1) Diesel Engine-driven drilling rigs, which use diesel engines as power through mechanical transmission or hydraulic transmission.
(2) AC driven drilling rig, suitable for use in oil fields with industrial power grids.
(3) The drilling rig is driven by direct current, and the working unit is driven by a direct current motor.
Fourth, according to the driving mode
(1) Drive alone. Each working machine is driven by generators of different sizes, which are mostly used for electric drive. The transmission is simple and easy to install, but the power utilization rate is low and the total equipment mass is large.
(2) Unified drive. The three working units of drawworks, drilling Pump and turntable are driven by the same power unit. Most drilling rigs use this scheme. The unified drive can also include only one drilling pump, and the other drilling pump is driven separately. The unified drive drilling rig has high power utilization and can be adjusted mutually when the engine fails, but the transmission is complicated, installation and adjustment are troublesome, and the transmission efficiency is low.
(3) Group drive. The combination of power is between individual drive and unified drive. There are two options for three working machines. The power utilization rate of this kind of drilling rig is higher than that of a single drive, and the transmission ratio is simple to drive in a unified manner. Two sets of working machines can also be installed on different heights and scattered sites.
During summer vacation, family care is the best safety precaution for children
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