The installation of window and door pulleys is actually very simple, only a few steps can be completed, of course, before the installation of window and door pulleys, but also know how to buy, the following I will lead you to understand.
Installation of window and door pulleys
Pulley is a very important accessory in the sliding door, when buying, be sure to ask the merchant what materials are used. Now there are three kinds of pulleys, respectively, plastic pulley, its texture is harder, the disadvantage is easy to break, after a period of time, sliding door in the process of pushing and pulling will feel astringent; metal pulley quality is better, but the noise is greater; glass pulley is the best of the three pulleys, with excellent toughness and wear resistance, smooth sense of pushing and pulling, and durable, the most important is that the pulley is also affect the life of the sliding door The key factor. The role of the sliding door pulley The key is the quality of the pulley, because the sliding door usually do 2.4 meters above the height, the door is wider. Can do 1.5 meters, coupled with the popular glass door panels today, so the weight itself is very large, if the weight of the bottom wheel is not enough, will greatly affect the service life, prematurely appear to push and pull poorly. Noise increased or simply can not be used, the current market bottom wheel, the largest load-bearing capacity is good when the smooth sliding door, its single wheel load can reach 180 kg.
To make the sliding door to use the heart, there is a very important point is: door heavy some better. So used as a sliding door door, should be a solid wood door or glass door, to increase the weight of the door, move up can be more smooth. Do not need to do hollow wooden doors, one because it is too light, easy to shift down the track, and secondly, because it is hollow, as resonant box, moving up the noise will be relatively large. Generally speaking, the weight of a single sliding door, should be at least 50-60kg or more, about 750-800mm width, installed glass words also have to be thicker, to 5mm is appropriate.
Dynamic pulley principle When used, the shaft moves with the object pulley is called dynamic pulley. The dynamic pulley can be seen as a force-saving lever, O is the fulcrum of the lever, the axis of the pulley is the point of resistance. The force of the object being lifted on the shaft is the resistance, and the force of the rope on the pulley is the power. When lifting a heavy object, if the two sides of the rope are parallel, the power arm is twice the resistance arm; when the pulley is balanced, the power is half the resistance. Therefore, if you do not count the gravity of the dynamic pulley itself, the use of dynamic pulley can save half of the force, but then you can not change the direction of force, pull the rope upward to lift the weight.
Choose high-quality doors and windows pulley
High-quality doors and windows pulley can not only reduce noise, but also extend the service life of the doors and windows. But the market is often a wide variety of pulleys, good and bad, so that consumers can not identify the quality of good and bad. The following two tips for choosing a pulley may help you.
First of all, choose the material, now on the market for sale in the track material varies, the track is mostly alloy texture, there are also some of the track made of copper. Alloy texture of the slide rail is divided into ordinary and thickening type, according to the texture of the applicable door or window. If the door or window volume is small and light weight, you can choose a more compact track, if the weight of the door or window is heavy, we must choose the thickening type track, to ensure safety and durability.
Next, choose the matching pulley, pulley is a sliding door and window accessories can not be ignored, good quality pulley can promote the use of doors and windows to push and pull. The quality of the pulley’s outer wheel and bearings determine the quality of the pulley, the outer wheel is mostly nylon fiber or full copper texture, copper pulley is stronger, but there is a sound when pulling. Nylon fiber texture of the pulley pulling no sound, but not as wear-resistant as copper pulley.
It is understood that good quality pulley bearings are generally made of stainless steel materials, bearing installation tight, soft feel when sliding no noise, and even some pulleys can also adjust the height to make up for the distance between the door and the track, so that the door is connected to the track more closely. Doors, windows at the bottom of the small pulley workmanship quality also varies greatly, well-crafted small pulley pulling up light and fast, some brands of pulley is also equipped with anti-jump device, the use of more secure.
Door, window bottom of the small pulley workmanship quality also varies greatly, well-crafted small pulley pulling up light and fast, some brands of pulley is also equipped with anti-jump device, the use of more secure.
