Thrust ball bearings are separable bearings, and the shaft and housing rings can be separated from the components of cages and steel balls. The shaft ring is a ring that matches the shaft, and the housing ring is a ring that matches the bearing housing bore, and there is a gap between the shaft and the shaft; Thrust ball bearings can only bear axial loads, unidirectional thrust ball bearings can only bear axial loads in one direction, and two-way thrust ball bearings can bear axial loads in two directions; Thrust ball bearings can not limit the radial displacement of the shaft, the limit speed is very low, unidirectional thrust ball bearings can limit the axial displacement of the shaft and housing in one direction, and two-way bearings can limit the axial displacement in both directions. Thrust roller bearings are used to carry combined axial and radial loads dominated by axial loads, but the radial loads shall not exceed 55% of the axial loads. Compared with other thrust roller bearings, this type of bearing has a lower friction factor, higher rotational speed and self-aligning performance. The rollers of the 29000 type bearing are asymmetrical spherical rollers, which can reduce the relative sliding of the rollers and raceways in the work, and the rollers are long, the diameter is large, the number of rollers is large, the load capacity is high, and oil lubrication is usually used, and grease lubrication can be used for individual low-speed situations. In the design and selection, it should be preferred; The Type 80000 Thrust Cylindrical Roller Bearings, Type 90000 Thrust Tapered Roller Bearings and Type AXK Thrust Needle Roller Bearings, which can withstand unidirectional axial loads, have a much greater axial load capacity than thrust ball bearings, and are rigid and take up less axial space. Thrust cylindrical roller bearings and thrust needle roller bearings are suitable for applications with low speeds, and thrust tapered roller bearings rotate slightly faster than thrust cylindrical roller bearings. [1] Thrust Bearings,Stainless Thrust Bearing,Thrust Ball Bearing,Thrust Roller Bearing Hebei Fangqiang bearing manufacturing Co., LTD , https://www.fangqiangbearing.com
Electrostatic spray technology The method of applying high-pressure electrostatic generator to spray droplets on the surface of the plant leaves is significantly increased, which can increase the effective utilization rate of pesticides to 90%.
Pelletizing and applying technology For the use of water-soluble chemicals in paddy fields, the pelletized application technique can be used to evenly spread the pills on the farmland, the work efficiency is increased by several tens of times, and there is no pesticide drift and no pollution to adjacent crops.
The recirculating spray technology redesigns the conventional spray equipment. A drug recovery device is installed on the opposite side of the spray component, and the liquid medicine not deposited on the crop plant is collected and then returned to the liquid tank for recycling. Effective utilization of pesticides.
The drug roll application technique is mainly used for the use of a systemic herbicide, and the drug solution is exuded from the surface of the medicine roller through a medicine roller (a plaster roller made of a foam material capable of absorbing the liquid medicine), and is in contact with the upper part of the weed. The blades will work. This method can almost completely apply the agent to the surface of the weed plant without causing the liquid to be thrown and dripped.
Huaxian County Plant Protection Station Chen Yipin
Several pesticides use new technology
Several pesticides use new technology and low-volume spray technology. The application amount per unit area is constant, and the pesticide stock solution is slightly diluted. The water consumption is equivalent to 1/5-1/10 of the conventional spray.
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