The rapid development of science and technology has brought a lot of convenience to our lives. From the development history of the lock, it has also experienced a lot of changes in the dynasty.
As early as 5000 BC to 2000 BC, as productivity increased, humans began to have private property (small amounts) accumulated. In order to protect personal property, humans began to explore the locks. Originally, I used my skin to wrap my belongings. The knot is knotted firmly with the ropes. To open, you must use a "wrong" made of animal teeth or animal bones to pick up the knots layer by layer. This is the prototype of the most primitive locks and keys in China.
By the time of the Yangshao culture in 3000 BC, the Chinese ancestors created wooden locks mounted on wooden framed buildings. This is China's oldest lock in the world, and it can be called the "world's first lock."
In the future, with the development of society and the improvement of productivity, copper, iron locks, silver locks, jade locks and other different materials and locks of different shapes were created, and the craft skills were getting higher and higher.
The steel lock is still relatively unfamiliar to the general public. This article is a small series on the simple problems of the steel lock, consulted Zhang Zong of Shanghai Jinggong Technology Co., Ltd.
It is understood that the steel lock is a control and management function, which combines high-strength mechanical structure, high-stable electric control, and high-security digital identification. It is used for special places such as prisons and detention centers. Currently, there are special lock models: AD-1, AD-2;
Stainless steel lock features:
Special places such as prisons and detention centers are mostly iron doors. They are frequently used, barbaric, and have large error and deformation. The civilian locks usually equipped cannot meet this strength and environmental requirements. They are easily damaged during installation and use, and often fail and exist safely. Hidden dangers threaten the safety of the regulatory site.
Udis has fully considered this requirement for the AD-01 series of steel locks specially designed for this special environment. After years of practice and improvement, udis has the following functions:
1. Mechatronics design, stainless steel lock combines electronic technology and high-strength mechanical locks perfectly. It has strong anti-riot performance and deterrent power, and is firm and reliable.
2, the shell of the whole steel casting, anti-riot, anti-corrosion, not only can be applied indoors, but also suitable for harsh environments such as outdoor (such as in Xinjiang, Inner Mongolia and other extreme environments).
3, the door, lock switch state is directly displayed in the lock panel, at a glance, so that the police are steady.
4, built-in lock body with control circuit, the company's original patent ID binding technology, greatly improving security.
5. This series of locks supports the network interface, and forms a special channel control network system with other equipments of the company to form an overall solution.
Stainless steel lock field installation effect:
Performance parameters:
1. Number of cards supported: 65536
2. Maximum number of records: 20000
3. Service life: 300000 times (every 10,000 times need maintenance)
4. Anti-riot performance: The panel protective shell should not produce plastic deformation and crack under the action of 65000N static pressure.
5. Anti-vandal function: anti-drilling for 60 minutes, anti-saw for 60 minutes, anti-smashing for 60 minutes, anti-stretching for 60 minutes, anti-shock for 60 minutes.
6. Input voltage: DC12V-15V
7. Rated power consumption: < 5W (locked state)
8. Network interface: TCP/IP, RS485
9. Working temperature: -20 ° C ~ 75 ° C
10. Working humidity: < 95%
11. Material and weight: 304 stainless steel casting, weighing about 4kg
12. Dimensions: 33 × 120 × 205 mm (lock frame size)
It is understood that Shanghai Seiko Technology Co., Ltd. is a national high-tech enterprise. For 19 years, it has been committed to the R&D and implementation of the AB gate access control system, the access door access control system, the control door access control system and the card system of the National Supervision Office.
In response to the special needs of the security management of the company, the company's patented product special "steel steel lock" has been recommended by the Ministry of Justice and the National Patent Office.
Ground Screw
Ground screw is made of material Q235 and finished by hot dipped galvanized. They are widely used in foundation system for solar panal, fence, wooden house, advertising boards, flag pole and etc. They can be easily installed by spiral piling machine, no digging, no concrete, no waitting, much convenient,cost effective, time saving and environmentally than concete foundation.
Ground screw technology is known worldwide and eliminates the need for concrete footings.
They are installed much like a traditional screw which allows them to be set within minutes--not hours or days like concrete. Ground screw foundations can be used to secure almost anything into the ground--from solar lighting, road signs, and recreation equipment. Plus, they are suitable for a wide range of soil and ground types, are stable and long-lasting.
Advantages:
1.No excavating, digging, or concrete
2.Installs within minutes
3.Instantly loadable with no waiting time
4.Stable, durable, storm proof, water proof, and secure against wind
5.Environmentally friendly, ecological, and sustainable
6.No damage to surrounding landscape
7.Fast and inexpensive to dismantle and relocate
8.Can be installed into sealed surfaces
Type:
1.Anchor with flange
The end of part is welded with flange which is easy for connections. This type is usually used for buildings and wharf because of its high accuracy and stability.
2.Anchor with U plate
The end of part is weld with U shape plate, this kind of anchor has good performance in connection and easy for operation. Normally used for fence and barrier.
3.Anchor with nuts
This type of anchor is fixed by three or four nuts which means easy for installation. It`s insert length can be adjusted according to customer demands. Normally used for the base of solar panels.
Benefits:
1.Flexible and efficient: the ground screw can be used as a foundation for a variety of permanent or portable ground mounted applications, from single highway signs, to fencing and large scale solar farms.
2.Unbeatable construction times, with top precision: the ground screw is installed using a number of different aids and machinery. It is driven into the ground at the exact point in a matter of minutes
3.Concrete-free innovation: no digging, excavation, wet trades, or curing time, which means no wait, and no delays!
4.Sustainable, cost-effective alternative to traditional foundations: The Honde ground screw is made from 75-80 per cent recycled steel. Ground screw installation is a low impact, vibration free process, as well as being completely and easily removable. Installation and removal have minimum impact on the landscape
5.Safe, robust, and uncomplicated: our ground screws have been stringently tested and gained European wide compliance through TUV Reinland and ISO1461 certification
6.Highways approved in the UK: our ground screw has been approved for use within highways, including passively safe supports and accepted by the Highways Agency for use on motorways and trunk roads. It has also been approved by the German Federal Road & Transport Authorities for the erection of all types of traffic and directional signs
6.Proven technology in renewable energy: the ground screw foundation has been used for over 10 years across Europe to install over 800MWp of solar PV programmes and supports over 10 per cent of the world market. In the UK, during 2011 and 2012, our ground screw was the chosen foundation for the construction of some of the UK`s largest solar farms, as well a large number of other schemes
7.Long-lasting, with consistent and reliable performance: our ground screw provides a guarantee of 20 years and have been successfully tested to 30 years` lifetime in the ground, with an overall life span of up to 50 years.
Ground Screw,Ground Screw Post Anchor,Helical Screw Piles,No Dig Ground Screw
Hebei Honde Plastic & Metal Co., Ltd. , https://www.foundation-system.com