Gated hardware is a kind of daily-use metal products that are extremely important in people's daily life. They are mainly used for floor springs and door closers. They are generally used in public places where shopping malls, office buildings, residential buildings, exhibition halls, etc. are frequently accessed. The function is to ensure that the door is normally open after being opened, or can be closed to the initial position in time. In general, the door closer has an automatic closing function to ensure that the door can be automatically closed after being opened. The ground spring is generally not fully closed after it is fully turned on, and can be automatically turned off when not fully opened. The core of the door closer design idea is to realize the control of the closing process, so that the various functional indicators of the closing process can be adjusted according to the needs of the person. The significance of the door closer is not only to automatically close the door, but also to protect the door frame and the door body. More importantly, the door closer has become an indispensable part of the intelligent management of modern buildings. The most critical quality problem of a typical spring door closer is the oil leakage, because the door closer relies entirely on its internal hydraulic system to control the closing process. The oil leakage means the failure of the hydraulic system, so the hydraulic system is determined to close. The only standard for the service life of the door. The main reason for the oil leakage is that the bearing transmission has a gap due to wear and the sealing effect is reduced. Therefore, the quality of the bearing transmission, the quality and accuracy of the heat treatment and machining are the key issues. In fact, the quality of door and window hardware and even all building hardware is related to the basic industrial level of the place of production. The housing of the door closer is made of cast aluminum and cast iron. The size, quantity and post-treatment of the shell blank are also one of the key factors affecting the quality of the door closer. The basic configuration of the floor spring is the sun shaft and the ground shaft (or the ground). The sun shaft is an accessory that connects the door frame and the door leaf at the upper part, and is composed of a bolt-type shaft fixed to the door leaf and a bushing fixed to the door leaf. The Tian axis can be applied to almost all wooden, steel, aluminum doors and frameless glass doors with glass door clamps. The installation accuracy of the floor spring has a great influence on its service life. Because the end of the service life of the ground spring is oil leakage, if the connection between the sun shaft and the shaft center of the ground spring shaft is not strictly perpendicular to the ground, the movement of the door leaf will bring great torque to the ground spring, increasing the relationship between the main shaft and the bearing. Wear and eventually lead to oil leakage. First, purchase 1. Check whether the product identification is complete. The regular product identification is often more standardized. The manufacturer's name, address, telephone number, etc. should be clearly indicated. Do not purchase the “three no†products. 2, door control hardware products (ground springs, door closers) have the requirements of the door weight, different weight of the door, choose different types of door control hardware products (ground springs, door closers), according to actual use, Choose the appropriate type of door control hardware (floor spring, door closer). If the model with the door weight is lighter than the actual door weight is selected, the door opening and closing torque will be too small. If the model with the door weight is the same as the actual door weight, the door opening and closing torque will be too large. actual use. 3. The regular manufacturer will clearly indicate the dimensions of the spring and the door closer, and give the information such as the reference size of the door leaf. The product manual will provide confidence such as the opening angle and speed adjustment valve. It should be clearly understood before purchase and should be based on actual use. Choose the appropriate model. 4, when buying, you should also pay attention to the appearance of the product, the product panel should be smooth, smooth, and the writing and pattern are complete and clear. The exterior of the buried underground part must have a rust-proof protective layer and must not be exposed. Second, the installation 1, buy back spring, door closer products, should carefully check the installation instructions, follow the instructions to install, should pay attention to whether the purchased model is suitable for the installed door weight. 2. It is necessary to correctly select the direction of opening the door, and drill according to the standard installation size. When installing, pay attention to fixing the screw and nut after the position is determined, otherwise the use will cause shaking. 3. If it is installed, you should try to open and close the door to see if there is any jamming. If there is any jamming, you must make adjustments. If it cannot be solved, you should inform the manufacturer to ask for help if necessary. 4. When using, pay attention to maintenance and cleaning. If there is oil leakage, repair or replace it in time. Concerned about surprises Tag: floor spring door closer door control hardware products oil spill Previous: Things to pay attention to when purchasing locks Next: Door and window hardware plays an important role in the performance of doors and windows 1. Features of tape measure Mini Steel Tape Measure,small metal tape measure,tape measure measurements Yucheng tengxu Measuring Tool Co., Ltd , https://www.txhardwaretools.com
Gift rulers are used for advertising and promotion. They are divided into Steel tape (steel tape) and leather tape (PVC plastic fiber tape). They are usually cute and compact. Tape measures are also called measuring tools. Eighty-five percent of the world's tape measures are exported from China.
2, the characteristics of the tape measure
(1) The tape measure is too deformed and will not fail
Why didn't it fail? The spring in the tape measure is very long, and its range from completely relaxed to fully tightened is very large. The entire stroke of the tape measure includes it, and there is a margin at both ends, so the tape measure will not fail.
(2) Pull one meter long and pull two meters long, there is no difference in tension
The spring of the tape measure is very thin, and the amount of deformation when it is tightened is also small, so the reaction force is very small, and the force change is not felt when the rule is pulled.