Yearly Archives: 2025

　　With the development of science and technology and the accelerated pace of life, people’s demand for payment methods has gradually changed to convenience and efficiency. Under this background, various electronic payments and digital currency emerge one after another, but some payment scenarios in real life still need practical and convenient solutions. At this time, the emergence of icash prepaid cards undoubtedly provides a simple and effective choice for our payment life.pass icash.oneπŸÕ¯ It can be seen from the present situation that the market prospect is relatively broad, which is conducive to our reference and investment. https://www.icash.uno/

　　Icash prepaid card is a kind of prepaid card. Users can recharge a certain amount of money into the card by purchasing this card, and then use it directly during consumption. Compared with the traditional cash payment, this method greatly simplifies the transaction process, and eliminates the cumbersome wallet management and the trouble of change. Whether shopping in shopping malls, dining in restaurants or even in daily small consumption, icash prepaid card can complete payment efficiently, completely releasing users’ time and energy.

　　In the process of use, the operation of icash prepaid card is very simple. You can easily complete the payment just by handing the card to the cashier, entering the password or scanning the code for confirmation. In any case, users can easily complete the transaction during the busy working hours in the morning or in the leisure afternoon on weekdays, avoiding all kinds of inconvenience caused by carrying cash. This convenience is particularly important, especially in the current social background that pays attention to efficiency.

　　Moreover, the application scope of icash prepaid cards is quite extensive. At present, it has covered many supermarkets, restaurants, entertainment and other industries. Users can choose suitable places to spend according to their own needs. On the one hand, using prepaid cards can not only save the time of payment, on the other hand, many merchants often provide additional preferential activities when using such cards to pay, helping users to further reduce their consumption burden. This dual advantage makes icash.

　　Security is also a highlight of icash prepaid cards. Compared with carrying a lot of cash, using prepaid cards is undoubtedly safer. Even if you accidentally lose them, you can stop the loss in time through related loss reporting services to protect your own funds. At the same time, the use of prepaid cards also avoids the common problems of shopping fraud and inconvenient payment. Therefore, more and more people are willing to choose this payment method to protect their money.

　　In the rapidly developing digital age, people’s lifestyles and consumption habits are constantly changing. In this process, adopting an effective payment method is not only to enhance convenience, but also to pursue the quality of life. With its convenient characteristics and strong applicability, icash prepaid cards meet the needs of modern consumers and make payment easier.

　　The payment method represented by icash prepaid card is not only a simple tool, but also brings a brand-new consumption experience. On this fast and convenient payment road, icash prepaid card undoubtedly plays an important role. In the future, with the further progress of science and technology and the improvement of people’s requirements for quality of life, prepaid cards will be more widely used and become an indispensable part of daily life.

　　This paper will start from the earliest development stage of electric wheelchair and trace its development course. The paper quotes the related introduction of motors on the Internet, and introduces its technical progress and the differences of electric wheelchairs with different configurations, including motors, controllers, batteries and frame materials.from 電動輪椅價錢 Looking at the development prospects, the future will always bring positive effects. https://www.hohomedical.com/collections/light-weight-wheelchair

　　It also expounds what kind of life the electric wheelchair can improve for the disabled and the elderly, and probes into its positive influence on the life of the disabled, hoping to encourage the disabled and people with mobility difficulties to actively and confidently use reasonable tools to help them improve their quality of life.

　　Since the 1990s, the mechanical design of wheelchair has basically been finalized, and it has made great progress mainly in the scientific and technological content, and has become a completely customizable small vehicle. For example, the famous physicist Hawking’s wheelchair has a built-in computer so that Hawking can control the wheelchair independently.

　　The origin of electric wheelchairs can be traced back to the early 20th century. The earliest electric wheelchair was invented by Canadian engineer George Klein, who designed an electric wheelchair to help soldiers who lost their walking ability because of disability during World War II. Clay’s core design is still the design basis of electric wheelchair because the wheelchair is endowed with more comprehensive functions. Although this kind of electric wheelchair is relatively heavy, it provides a way for the disabled to move independently and greatly improves their quality of life.

　　With the rapid development of modern financial technology, the popularity of cryptocurrency is increasing day by day, and people are especially interested in the trading and exchange of various cryptocurrencies. Finding a convenient and efficient trading platform has become an important demand of today’s users. As a new cryptocurrency trading platform, icash.one has won the favor of many users with its rich exchange options and user-friendly interface.So, icash≥‰÷µø® On the contrary, there is still a lot of room to play. https://www.icash.uno/

　　When choosing a trading platform, users often consider factors such as security, transaction costs, simplicity of processes and types of currencies supported. official website of icash.one has designed and planned in detail for these needs. The platform provides a variety of exchange options for cryptocurrencies, and users can choose the appropriate currency for trading according to their own needs. This diversified choice undoubtedly provides users with greater flexibility. Especially in the current market of digital assets, various new cryptocurrencies emerge one after another, and users can easily realize the conversion between different currencies through this platform, which meets the diversified needs of different investors and traders.

　　In addition to the rich exchange options, security is also the focus of icash.one. Whether it is the safety of users’ funds or the information in the transaction process, the platform has adopted a series of security measures, adopting advanced encryption technology, which can effectively protect users’ account information and transaction data from being leaked. In addition, the platform has set up multiple authentication mechanisms to ensure that only authenticated users can operate funds, which makes users feel more at ease and reduces the potential.

　　In addition to security, the interface design of icash.one is also very intuitive. The user-friendly operation process enables even users who are not familiar with cryptocurrency to get started in a short time. The platform interface is concise and clear, and the layout of various functions is reasonable, so that users can quickly find the required options when exchanging. This humanized design has significantly improved the user experience and made more people willing to try and participate in cryptocurrency transactions. In the exchange process, the problem of hidden costs has always been the focus of investors’ attention. icash.one is famous for its transparent transaction costs, and there is no setting of hidden costs, so that users can know fairly well when trading in digital currency, and can better plan their own investment strategies. During the exchange process, the platform clearly shows the cost details of each step, which makes users more reference when making decisions.

　　It is worth mentioning that icash.one also pays close attention to the market dynamics and updates the types of currencies supported by its platform in time to adapt to the rapidly changing market demand. With the continuous emergence of emerging currencies, the platform strives to include the currencies that users are most concerned about in the exchange options, providing users with more trading opportunities. This forward-looking layout not only meets the needs of existing users, but also attracts more new users to join.

　　In the ever-changing financial environment, icash.one has won the trust of users with its continuously optimized functions and stable service quality. By offering a variety of cryptocurrency exchange options, the platform not only helps users easily realize flexible asset allocation, but also creates more investment opportunities for them. With the increasing global awareness and acceptance of digital currency, such a trading platform will surely play an increasingly important role in the future. With its rich exchange options, secure transaction guarantee, user-friendly interface and transparent fee structure, icash.one actively responds to market demand and strives to provide every user with a high-quality transaction experience.

　　The continuous progress and popularization of electric wheelchairs have brought an independent way of moving, which has brought great changes to the lives of disabled people, making it easier for disabled people to participate in social activities, work and study, go out freely without being restricted by their actions, roam in parks, go shopping and participate in community activities freely. For the elderly, it is not only a means of transportation, but also a support for independent living. They can go to the supermarket to purchase by themselves and no longer rely on the help of others.The data shows that, 電動輪椅價錢 Its development potential should not be underestimated, and it is also the inevitability of its existence. https://www.hohomedical.com/collections/light-weight-wheelchair

　　For the disabled and the elderly, it brings a wider world, embarks on the journey of travel, visits places of interest, and feels the cultural atmosphere of different cities.

　　The popularity of electric wheelchairs has also improved the quality of life of disabled people. Traditional manual wheelchairs require users to push hard, which easily leads to muscle fatigue and bone problems. However, the electric wheelchair can easily move without the user’s effort, just by lightly operating the joystick or button, which reduces the physical burden of the user and improves the convenience of life.

　　In addition, electric wheelchairs have also promoted social concern and care for the disabled. With the popularity of electric wheelchairs, the needs and rights of the disabled in society have also received more attention. Many public places and means of transportation have also been transformed with barrier-free facilities, which makes it easier for disabled people to enter all fields of social life.

　　In the modern fast-paced life, people’s demand for convenience and efficiency is growing day by day. Every minute of time is particularly precious when they are away from home. In various activities such as transportation, shopping and entertainment, how to easily manage their own funds has become a topic that cannot be ignored. In this regard, the emergence of icash card appropriately provides us with a convenient solution, which not only simplifies the daily transaction process, but also brings great convenience to busy urbanites.consequently icash.oneπŸÕ¯ I also got a lot of attention and wanted to join the ranks. https://www.icash.uno/

　　Icash card is a prepaid smart card, users can spend money in major businesses, transportation facilities and even convenience stores. This small card carries all aspects of your daily life. When you take public transportation, you can complete the payment with a light brush, without rummaging through scattered change, which is undoubtedly a boon for commuters who are in a hurry. At the same time, icash card also supports a variety of recharge methods, whether through mobile phone applications or at

　　When shopping, using icash card makes people feel extremely relaxed. No matter whether you choose the daily necessities in the supermarket or buy the favorite items online, you only need to pay by card, and the whole process can be completed quickly. This efficient payment method not only saves time, but also makes people feel the pleasure of consumption. Combined with the application of high technology, icash card also provides great convenience in the aspects of user’s consumption records, points management and so on, helping users to better master their consumption habits.

　　In addition, the use of icash card is very extensive. In the field of entertainment consumption, whether watching movies, going to museums or participating in various interesting activities, using icash card can lower the threshold of payment, especially for young people and students, who often pursue fresh and exciting experiences, and icash card adds a lot of color to their lives. Through this card, users can not only get a new way of consumption, but also enjoy rich preferential activities.

　　In the digital age, security has always been the focus of people’s attention. In the design of icash card, users’ security needs are fully considered. Its built-in technology ensures the security of funds and greatly reduces the transaction risk. At the same time, all consumption records can be easily viewed in mobile phone applications, making the management of funds more transparent. Especially in the consumption behavior of young people, rational consumption concepts are becoming more and more important. Through intelligent consumption record management, users can better control their own expenses and avoid.

　　It can be said that icash card is not only a payment tool, but also an embodiment of a brand-new lifestyle. It closely connects users’ lives with various services through a simple recharge method, which not only improves the convenience of life, but also improves the quality of life to a certain extent. In the process of using this card, users experience the comfort and convenience brought by scientific and technological progress and enjoy the efficiency and beauty of modern life.

　　We can look forward to the application of icash card in more fields. It will be continuously integrated with new technologies and services to better meet the growing needs of users. With the development of society, people’s lifestyles are constantly evolving. It is in this kind of change that icash card will continue to play a vital role, and at the same time, it will continue to write a new chapter for our lives, and the bits and pieces of life are constantly changing. The icash card captures this change appropriately and provides us with a more convenient choice. Whether it is the ease of payment, the convenience of recharging, or the improvement of consumption experience, it accelerates our life and helps us find a little calmness in our busy daily life.

　　Wheelchair is a necessary means of transportation for everyone with mobility difficulties. Without it, we will be unable to move. Use wheelchairs correctly and master certain skills. It will greatly help us to take care of ourselves. Do you know what the common sense of using electric wheelchairs is? What are the precautions for using an electric wheelchair?I think 電動輪椅價錢 It will definitely become a leader in the industry and look forward to the high-end products. https://www.hohomedical.com/collections/light-weight-wheelchair

　　Precautions for using electric wheelchairs:

　　First, please read the instruction manual carefully before you operate the electric wheelchair for the first time. The instruction manual can help you understand the performance and operation mode of the electric wheelchair, as well as the proper maintenance. Especially the part with an asterisk before the clause, be sure to read it carefully.

　　Second, don’t use batteries with different capacities. Don’t use different brands and types of batteries. Replace all batteries together, and don’t mix old and new batteries. Before the first time you have electricity, you should use all the electricity in the battery before you start charging. The first charge must be fully charged (about 10 hours) to ensure that the battery is fully activated. Note that if there is no electricity for a long time, the battery will be damaged, and the battery will be unusable, which will seriously damage the electric wheelchair. Therefore, check whether the power supply is sufficient before use, and charge it when the power is insufficient.

　　Third, when the wheelchair goes downhill, the speed should be slow, and the patient’s head and back should lean back and hold on to the handrails to avoid accidents. Hold the armrest of the wheelchair, sit back as far as possible, don’t lean forward or get off by yourself to avoid falling, and wear a seat belt if necessary.

　　Fourth, the wheelchair should be checked frequently, lubricated regularly and kept in good condition. Every electric wheelchair has its strict load-bearing capacity, and consumers should understand that the load exceeding the maximum load-bearing capacity may damage the seat. Frame, fastener, folding mechanism, etc. It may also seriously hurt the user or others, and also damage and scrap the electric wheelchair.

　　Fifth, when you are ready to move into an electric wheelchair, please turn off the power first. Otherwise, if you touch the joystick, it may cause the electric wheelchair to move unexpectedly. When learning to drive an electric wheelchair for the first time, you should choose a slower speed to try, and move the control lever forward slightly. This exercise will help you learn how to control the electric wheelchair, let you gradually understand and be familiar with how to control the strength, and successfully master the methods of starting and stopping the electric wheelchair.

　　With the rapid development of science and technology, digital and virtual assets have gradually become an important part of people’s lives. How to manage these assets safely and conveniently has become an urgent problem. Under this background, the emergence of digital wallet provides us with a brand-new solution. icash.one official website is committed to creating a powerful and personalized digital wallet for users to help users better manage, trade and protect their digital assets.To get brand praise, icash‘§∏∂ø® It is necessary to have the spirit of constantly improving the quality of products, but also to have a bunch of eternal heart fire. https://www.icash.uno/

　　Today, with the increasing number of digital assets, a single payment function can no longer meet the needs of users. At the beginning of its design, icash.one focused on the user experience and paid attention to the comprehensive functional layout. Whether it is storage, sending, receiving or trading, users can easily complete it on this platform. Through the account management function, users can check their asset changes at any time and master the financial dynamics. At the same time, the classified management system provided, Users can freely create different asset groups according to their own needs. This function not only simplifies the management process, but also enables users to recognize their asset portfolios more clearly.

　　Security is one of the most important considerations of digital wallet. icash.one official website has adopted multiple security mechanisms, from user authentication to asset storage, and has carried out strict security design. Through distributed technology and encryption algorithm, all user data and transaction records have been effectively protected, and users’ assets will not be threatened by hacker attacks and data leakage, whether in public or private networks. In addition, the system also provides active monitoring and abnormal alarm functions to find any suspicious transactions in time.

　　In digital asset management, user experience is a factor that can’t be ignored. icash.one has made great efforts in interface design. The simple and intuitive operation interface allows every user to get started quickly, and both beginners and experienced players can easily find the required functions. At the same time, the mobile application of the platform constantly optimizes, which ensures that users can manage their wallets conveniently at any time and any place. Through real-time notification function, users can grasp the transaction dynamics in time, so that every operation can be made in.

　　Socialization is also a highlight of icash.one. This platform is not only a personal asset management tool, but also encourages interaction and communication among users. Through social functions, users can easily share asset management experience, get suggestions from others, and even participate in community discussions. Such interaction not only increases the trust among users, but also promotes the popularization and development of digital assets. In addition, the platform adopts regularly published educational content to help users better understand the operating mechanism and market trends of digital assets.

　　In the increasingly fierce market competition, icash.one has always adhered to the principle of user-centeredness, and constantly carried out technological innovation and iterative update. Whether it is the expansion of functions or the improvement of security, the team has maintained a high degree of sensitivity, responded to market changes in time and met users’ needs. This flexibility has provided users with continuous use value, ensuring that they can always experience cutting-edge services and technologies in the process of digital asset management.

　　The digital wallet provided by icash.one official website not only has the basic functions of traditional wallets, but also strives to bring the best management experience to every user through innovative design, security and social interaction. As more and more people start to contact and use digital assets, this exclusive wallet will undoubtedly become a part of their lives, helping them to better manage their wealth in this digital era.

　　Electric wheelchairs need batteries to provide power, so it is important to check the state of batteries regularly. Both lead-acid batteries and lithium batteries have limited service life. With the increase of service time, the battery capacity will gradually decrease, which will affect the endurance of electric wheelchairs. It is generally recommended to check the battery performance every 1.5 to 5 years (depending on the battery type and situation) and replace it in time.Sufficient data show that 電動輪椅 It can drive many people to find jobs, thus driving economic development. https://www.hohomedical.com/collections/light-weight-wheelchair

　　02

　　tyre

　　Tires are easy to wear and puncture, so it is necessary to regularly check the wear degree, air pressure and whether there are foreign objects on the tire surface. Damaged or aged tires need to be replaced in time.

　　03

　　Brake system

　　Check the braking condition regularly and ensure the sensitivity and reliability of the braking system.

　　04

　　Motor and drive system

　　Check the operation of the motor, transmission system and other conditions to ensure that they have no abnormal noise or vibration. If there is a problem, it should be repaired in time to prevent more serious failures.

　　05

　　Joystick and control system

　　Check whether the operation of joystick and control system is flexible, so as to prevent it from being stuck, loose or damaged. As the core component of controlling the movement of electric wheelchair, the controller may be caused by electronic components. Failure due to aging, humidity or impact. Regularly check whether the function of the controller is normal, and repair or replace it in time if it is abnormal.

　　06

　　charger

　　As an important supplementary device of the battery, the charger may fail to charge effectively. Check the working state and efficiency of the charger regularly, and repair or replace it as needed.

　　With the rapid development of science and technology, digital and virtual assets have gradually become an important part of people’s lives. How to manage these assets safely and conveniently has become an urgent problem. Under this background, the emergence of digital wallet provides us with a brand-new solution. icash.one official website is committed to creating a powerful and personalized digital wallet for users to help users better manage, trade and protect their digital assets.More importantly, put icashµ„ø® It is imperative for us to make thorough analysis and maximize its social function. https://www.icash.uno/

　　Today, with the increasing number of digital assets, a single payment function can no longer meet the needs of users. At the beginning of its design, icash.one focused on the user experience and paid attention to the comprehensive functional layout. Whether it is storage, sending, receiving or trading, users can easily complete it on this platform. Through the account management function, users can check their asset changes at any time and master the financial dynamics. At the same time, the classified management system provided, Users can freely create different asset groups according to their own needs. This function not only simplifies the management process, but also enables users to recognize their asset portfolios more clearly.

　　Security is one of the most important considerations of digital wallet. icash.one official website has adopted multiple security mechanisms, from user authentication to asset storage, and has carried out strict security design. Through distributed technology and encryption algorithm, all user data and transaction records have been effectively protected, and users’ assets will not be threatened by hacker attacks and data leakage, whether in public or private networks. In addition, the system also provides active monitoring and abnormal alarm functions to find any suspicious transactions in time.

　　In digital asset management, user experience is a factor that can’t be ignored. icash.one has made great efforts in interface design. The simple and intuitive operation interface allows every user to get started quickly, and both beginners and experienced players can easily find the required functions. At the same time, the mobile application of the platform constantly optimizes, which ensures that users can manage their wallets conveniently at any time and any place. Through real-time notification function, users can grasp the transaction dynamics in time, so that every operation can be made in.

　　Socialization is also a highlight of icash.one. This platform is not only a personal asset management tool, but also encourages interaction and communication among users. Through social functions, users can easily share asset management experience, get suggestions from others, and even participate in community discussions. Such interaction not only increases the trust among users, but also promotes the popularization and development of digital assets. In addition, the platform adopts regularly published educational content to help users better understand the operating mechanism and market trends of digital assets.

　　In the increasingly fierce market competition, icash.one has always adhered to the principle of user-centeredness, and constantly carried out technological innovation and iterative update. Whether it is the expansion of functions or the improvement of security, the team has maintained a high degree of sensitivity, responded to market changes in time and met users’ needs. This flexibility has provided users with continuous use value, ensuring that they can always experience cutting-edge services and technologies in the process of digital asset management.

　　The digital wallet provided by icash.one official website not only has the basic functions of traditional wallets, but also strives to bring the best management experience to every user through innovative design, security and social interaction. As more and more people start to contact and use digital assets, this exclusive wallet will undoubtedly become a part of their lives, helping them to better manage their wealth in this digital era.

　　Bolt looseness is common, but if you don’t pay attention, it will often cause equipment vibration, component damage, and even casualties. How to tighten a small nut has always been a long-lasting topic in mechanical design. Today, let’s talk about the most basic method of fixing nuts in work.beyond doubt rock nut It will definitely lead the development direction of the whole industry and let its light bloom in this field. https://www.chinatianlong.com/

　　In general, we analyze the bolt fracture from the following four aspects:

　　First, the quality of bolts

　　Second, the pre-tightening torque of bolts

　　Third, the strength of bolts

　　Fourthly, the fatigue strength of bolts.

　　In fact, most cases of bolt fracture are caused by looseness, specifically, it is damaged due to looseness. Because the situation of bolt loosening and breaking is basically the same as that of fatigue fracture, finally, we can always find the reason from the fatigue strength. In fact, the fatigue strength is so great that we can’t imagine it, and the fatigue strength is not used at all in the use of bolts.

　　01

　　The bolt fracture is not due to the tensile strength of the bolt.

　　Take a M20〜80 8.8-grade high-strength bolt as an example. Its weight is only 0.2kg, and its minimum tensile load is 20t, which is as high as 100,000 times its own weight. Under normal circumstances, we only use it to fasten 20kg parts, and only use one thousandth of its maximum capacity. Even under the action of other forces in the equipment, it is impossible to exceed 1,000 times the weight of the parts, so the tensile strength of threaded fasteners is sufficient and it is impossible to damage them because of insufficient strength of bolts.

　　02

　　The fracture of bolts is not due to the fatigue strength of bolts.

　　Threaded fasteners can be loosened only 100 times in the transverse vibration loosening experiment, but they need to be vibrated repeatedly for one million times in the fatigue strength experiment. In other words, the threaded fastener is loose when using one ten thousandth of its fatigue strength, and we only use one ten thousandth of its great capacity, so the loosening of the threaded fastener is not due to the fatigue strength of the bolt.

　　03

　　The real reason for the damage of threaded fasteners is looseness.

　　When the threaded fastener is loosened, it generates huge kinetic energy mv2, which directly acts on the fastener and equipment, causing the fastener to be damaged. After the fastener is damaged, the equipment cannot work in a normal state, further causing the equipment to be damaged.

　　When the fastener is subjected to axial force, the thread is damaged and the bolt is pulled off.

　　When the fastener is subjected to radial force, the bolt is cut and the bolt hole is oval.

　　04

　　Choosing thread locking mode with excellent locking effect is the fundamental solution to the problem.

　　Take hydraulic hammer as an example. The weight of GT80 hydraulic hammer is 1.663 tons, and its side bolts are 7 sets of M42 bolts of grade 10.9. The tensile force of each bolt is 110 tons, and the pre-tightening force is half of the tensile force, and the pre-tightening force is as high as 300 to 400 tons. However, the bolt will break, and now it is ready to be changed to M48 bolt. The fundamental reason is that the bolt locking cannot be solved.

　　When a bolt breaks, it is easy for people to conclude that the strength is not enough, so most of them adopt the method of increasing the strength grade of the bolt diameter. This method can increase the pre-tightening force of the bolt, and its friction force is also increased. Of course, the anti-loosening effect can also be improved, but this method is actually a non-professional method, and its investment is too large and its income is too small.

　　In short, the bolt is: “If you don’t loosen it, it will break.”

　　Cause analysis of bolt looseness

　　The threaded connection is designed according to the self-locking condition: ψ ＋ρv, and the friction pair generated in the threaded pair makes the bolt self-lock to tighten the bolt, so the connection will not loosen automatically under static load. However, under impact, vibration, variable load and great temperature change, the friction force f of the screw pair will decrease or disappear instantly. If this phenomenon occurs repeatedly, the connecting bolt will gradually loosen. After the threaded fastener is loosened, the kinetic energy mv2 is generated, and the fastener subjected to axial force, the thread is destroyed and the bolt is pulled off. Fasteners subjected to radial force, bolts are cut and bolt holes are broken.

　　Bolt locking principle: limit the relative motion between screw pairs or increase the difficulty of relative motion.

　　Introduction of common anti-loosening methods

　　There are three commonly used methods for locking bolts: friction locking, mechanical locking and permanent locking. Among them, mechanical locking and friction locking are called detachable locking, while permanent locking is called non-detachable locking.

　　01

　　Friction locking

　　1. Spring gasket locking

　　The anti-loosening principle of the spring washer is that after the spring washer is flattened, the spring washer will generate a continuous elastic force, so that the threaded connection pair between the nut and the bolt will maintain a friction force continuously and generate a resistance moment, thus preventing the nut from loosening. At the same time, the sharp corner at the opening of the spring washer is embedded into the surface of the bolt and the connected piece respectively, thus preventing the bolt from rotating relative to the connected piece.

　　2. Lock the top nut (double nut)

　　3. Self-locking nut locking

　　One end of the nut is made into a non-circular convergent or radially convergent after being slit. When the nut is tightened, the closure expands, and the screwing threads are pressed by the elastic force of the closure.

　　4. Locking of elastic ring nut

　　Fiber or nylon is embedded in the thread to increase friction. The elastic ring also plays a role in preventing liquid leakage.

　　02

　　Mechanical locking

　　Locking of groove nut and cotter pin

　　2. Stop gasket

　　After the nut is tightened, the single-ear or double-ear stop washer is bent and attached to the side of the nut and the connected part respectively to realize locking.

　　3. Locking of series steel wire

　　Use low-carbon steel wire to penetrate the holes in the head of each screw, and connect the screws in series to brake each other.

　　03

　　Permanent locking

　　Commonly used permanent locking are: spot welding, riveting, bonding, etc. This method mostly destroys threaded fasteners during disassembly and cannot be reused.

　　In addition, there are other ways to prevent loosening, such as: coating liquid adhesive between screwing threads, embedding nylon rings at the end of nuts, riveting and locking. Mechanical locking and friction locking are called detachable locking, while permanent locking is called non-detachable locking.

　　1, punching method to prevent loose

　　After the nut is tightened, the thread is damaged at the end of the thread.

　　2. Adhesive Locking-Nut Locking Solution

　　Apply the nut locking liquid to the bolt tightening position, and then screw on the nut. After self-curing, the locking effect is good.