Some details of ground leveling requirements


1. It should be clear whether the flatness error of the ground, whether it exceeds the standard, and whether ground leveling processing is required.
a) The flatness error of the ground, the industry standard is less than or equal to 3 mm, measured with a two-meter ruler and feeler gauge. There are no less than two indoor measurement points and the maximum value. If you are within this error range, do not level it. Otherwise, in principle, leveling should be done. If the owner does not require leveling, the resulting problems are not related to the laying of the floor.
b) The current ground, more than the standard, the real leveling is not much, because the leveling is more expensive. Exceeding the standard is not much, most of them have made do. To tell the truth, if the difference is small, the foot is a little soft, and some are even a little noise. It is not very good for the floor, but the impact is not great. Excessively excessive, it must not improvise.
c) Others know that the ground is uneven, and the decoration team also asked for leveling. The result is still uneven. They did not tell the decoration team that the standards for acceptance after leveling were mostly unknown to them. Can not discuss with the decoration team.
d) Another point, someone asked the ground to find the level. We don't think it necessary. Most of them, it is sufficient to find a smooth one, and it also meets the requirements of the industry standard for the flatness of the ground. If you must find the level, you must give it equal level in advance and you must use white. It is not impossible. Relatively speaking, to increase the cost, the height of the loss space.

2. The difference between the height after paving the floor and the height of other paving materials must be understood.
a) Generally speaking, it is better to let the ground material be as high as the ground material. People live more comfortable. Some people were afraid of spending money at the time, and the living room was inconsistent with the dining room or the bedroom. They all regretted when they stayed. It's best to do it once.
b) There are many different methods for leveling. For different situations, they should be treated differently.
If your floor is relatively flat, you can use a bedding to level it. Relatively easy and effective. The flatness of the ground is much poorer, and it is not recommended to pave the way. Because the bedding can be particularly prominent on the ground, such as stones, etc., have a regulating effect, for the local small-scale uneven, can not be adjusted. I can't fix it, but my feet are still soft.
If you have poor ground flatness, it is recommended to level cement mortar. Once you can solve the two issues of flatness and height adjustment.
If you do not have much difference in the flatness of the ground, do not adjust the height difference of different ground materials, you can use cement self-leveling to deal with. The thickness is not high and the construction quality is very good.
If the flatness of the ground is inaccurate, only in a local area, a more flexible approach can be adopted. Before installing the floor, please install a worker and apply a leveling technique such as using a winter dry powder such as quick-drying powder. Does not affect the installation speed and quality.
The above methods of leveling must depend on the specific circumstances of the ground. The price of the first three types of leveling is generally around 20 yuan per square meter; different prices vary in different regions. The latter is more economical, about 5 yuan per square meter.
3. After leveling the ground with cement mortar, be sure to wait for the ground to dry before installing the floor. The method of measuring dryness and humidity is simple. A piece of plastic film was used to lay the ground. After one day, the floor was not wet and there was no water on the membrane, which proved that the ground water content and the ambient humidity reached a balance. If there are drops of water, or if the ground is wet, it proves that moisture is emitted to the indoor environment and the ground does not dry out.

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High Speed Door Motor And Control Box

Our company have German SEW Motor, Japan Mitsubishi Controller. Our own brand Hofic servo motor and controller. Chinese famous brand SEJ motor and Holip controller.

About our German SEW Motor and Japan Mitsubishi Controller: It is easy to find the ideal energy-efficient motor for your application at SEW. The series has a suitable design in its range for the globally applicable efficiency classes. Select the power and frequency within this motor design and you have already taken care of the most important selection criteria.All other motor options are of course available independently of the efficiency class. A comprehensive braking concept and cost-optimised built-in encoders ultimately complement the motor range. Comprehensive braking concept and combinations i.e. up to three different brake sizes per motor size featured in the range: Cost-optimised built-in encoders integrated into the motor. Motors for efficiency classes IE1 to IE4.Compact design saves space and costs. Future-proof, also as regards environmental protection (standards). Reduction in operating costs when using energy-efficient motors; our energy-efficient motors conform to the efficiency classes.

About servo High Speed Door Servo Control System: Our rolling gate servo control system is suitable for high speed and high usage soft and hard rolling gate. The whole system is in a small and light package, it has high torque and high operating speed, lower noise, high reliability, smooth and soft operating curves, it`s suitable for high speed and usage environment. The rolling curtain can be controlled by pull switch, push button, Bluetooth, ground radar, ground magnetic sensors. Operating Speed: 1M/s; Operating Width: <16 ㎡; Daily operating time: >2000 time; Rated voltage: 220v; Rated Output: 0.75 KW/1.5KW.

The system can operated via: 1) control box; 2) inching electronic control; 3) continuous automatic operation; 4) emergency stop; 5) single side operation box; 6) time delay; 7) ground radar and/or magnetic sensors. Please refer to Wiring Terminal for eternal connections.

System has fuse/safety wire shutdown switch for three-phase power protection, fuse/safety wire for operating circuit protection, and temperature sensing relay for motor protection.

Stroke Controller utilizes absolute value encoder. Connect the absolute value encoder and reducer via encoder`s axle, and fix the wings on to the reducer, than insert the aviation plug into plug receptacle.

The mounting screw for the control box must inspect regularly to prevent screw been getting loose and falling off. Check the internal and external wirings. Check and change the oil for the redactor on regular basis.

Precision: The system use Full closed-loop servo control and Double Encoder design. This is to ensure long operating life and to prevent overshooting during operating.

Stability: The system utilizes integrated design concept, in order to simplify internal wiring and prevent any function caused by wiring and terminal connections.

High Speed: Motor max speed is 2500 rpm; door max operating speed is 2 m/s.

Smooth: The torque servo system can adjust torque to the load automatically, and its speed curve mode step less speed regulating to ensure a smooth operation.

About SEJ motor and Holip controller: Three-phase asynchronous motor with magnetic brake has broad uses, It is suitable for various mechanical main drive and auxiliary drive, and it is also used for various required rapid stopping and correct positioning. The braking time within 0.2 second. Electric motor is added the DZM series direct current electromagnetic arrester by the basic series(Y series) electric motor.The protection class of electric motor part is IP44,the arrester part is IP23.if be applicable to bad environment can also make the arrester part into IP44,but customer have to put forward a special request while ordering,the manufactory can design a manufacturing exclusively. Its structure diagram is picture 1 and 2,picture 1 is the structure with hand release.Picture 2 is the structure without the hand release.Its operating principle BE, after being to make the retardation coil(6)to connect direct current power supply,because of the function of electromagnetic force,electromagnet(7)attract gag bit(5),and compress spring(24),make arrester disc(2)away from the friction surface of the gag bit(5)and shield(26)(the electrical motor can immediately operate normally).When the power supply cuts off after,the electromagnet(7)loses electromagnet force,the spring(24)releases the gag bit(5)and compress tightly to arrester disc(2),the arrester function,stop(the motor shaft)quickly,make electric motor shop turning to move,for the second time connect power supply will repeat above-mentioned action.

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Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.selfrepairinghighspeeddoor.com