Teach you a small roller machine maintenance car paint tips

  Concrete finishing is not an easy job. During construction, workers' hands, backs and knees are easily injured. The advent of trowels allows construction workers to stand and operate when finishing concrete. Based on the size of the project, the number of people and the customer's requirements for the surface layer, the construction party can consider purchasing a trowel. If you are a construction party specializing in concrete coloring, dyeing or home decoration polishing, you may not need to buy a ride-on trowel (double-disc machine). This type of trowel is not only expensive, but also has a higher hardness after finishing, and there is no such high requirement for the above-mentioned types of floors. In fact, a walk-behind trowel is sufficient to meet the work requirements of small-area floor slurry finishing. Under what circumstances should you consider investing in a trowel? Generally speaking, the construction area is an important consideration. "Even small-area projects can use trowels, even if the project is only a few hundred square meters. As long as the construction area reaches 100 square meters, a trowel must be used. If it exceeds 300 square meters, a small ride-on trowel must be considered." From another perspective, the working efficiency of a single-disc trowel is equivalent to that of three construction workers using traditional manual finishing tools such as scrapers. It seems that the biggest advantage of the trowel is to increase the construction speed. But this is only a one-sided understanding of the advantages of the trowel. The trowel does not simply increase the speed but the efficiency when dealing with large-area construction. To put it further, the trowel allows the construction party to choose a more appropriate time to start the machine when dealing with large-area construction, instead of having to start early because of the need to consider the overall area of ​​construction like traditional construction. 1. Before use, check whether the motor, electrical switch, cable and wiring are normal and meet the regulations, and install a leakage protector. 2. Before use, check and clean the debris on the trowel to avoid the whole machine jumping during use. 3. After the power is turned on, the test run is carried out. The blades rotate in a clockwise direction and must not be reversed. 4. The operator should wear insulating shoes and insulating gloves. The cable is carried by the assistant, who should also wear insulating shoes and insulating gloves. Be careful to prevent the cable insulation layer from being scratched and causing electric shock accidents. 5. If the trowel fails, it needs to be shut down and the power is cut off before it can be repaired. 6. The trowel should be stored in a dry, clean environment without corrosive gases. The handle should be placed in the specified position. It should not be loaded and unloaded rudely during transfer. 1. During construction, pay attention to the temperature of the motor reducer not exceeding 80° 2. The oil of the turbine box needs to be checked frequently. If it is lower than the oil mark, please add oil in time. The machine should be cleaned in time after each use, especially the wiper should be clean and stored in a dry, clean and non-corrosive environment. When the wiper is worn to 30mm on one side, loosen the nut, turn the wiper around and tighten the screw again to achieve the purpose of using two pairs. The angle of the trowel can be adjusted by turning the hand wheel to achieve the ideal effect of rough trowel. If you need to stop the machine during construction, please turn off the power in time. When the gasoline engine stops, press the switch on the handle in time to stop the machine. The floor effect after the trowel is processed is more uniform, the construction speed is faster, and the operation is more convenient. Long-term operation with a handheld trowel will easily fatigue the construction worker's knees, shoulders and elbows, which will affect the construction effect. Simply put, using a trowel makes the originally difficult operation easier, and it is a better equipment for floor finishing.

Concrete has strong compressive resistance but weak tensile resistance. The double-layer steel mesh significantly improves the tensile resistance of the pavement through the synergistic effect of the upper and lower layers of steel bars, reducing the risk of cracking caused by load or temperature stress. The double-layer steel mesh can evenly disperse the concentrated load to a larger area, reduce local stress concentration, and extend the service life of the pavement. When concrete shrinks or bends, the steel mesh can restrain the development of cracks and prevent cracks from penetrating the entire pavement structure. For pavements that frequently bear dynamic loads (such as heavy vehicle rolling), double-layer steel mesh can enhance the fatigue resistance of the structure and delay aging and damage.   Airport runways, port terminals, highways and other pavements that need to bear high loads. In areas with a high risk of uneven foundation settlement, double-layer steel mesh can reduce structural cracking caused by foundation deformation. In high temperature or severe cold areas, steel mesh can help resist temperature stress; in humid environments, double-layer arrangement can increase the thickness of the protective layer and improve corrosion resistance.   Usually, the upper steel bar is located 5~10cm below the top of the road surface, and the lower steel bar is close to the bottom. The middle is fixed by a bracket or a horse stool to ensure the thickness of the protective layer (generally 3~5cm). The diameter and spacing of the steel bar need to be determined according to the design load calculation. The common specifications are φ8~φ16mm and the spacing is 15~30cm. The steel mesh is connected by binding or welding to ensure integrity; the steel bars can be increased or reinforced in local weak areas.   Double-layer steel mesh may affect the fluidity of concrete. The slump needs to be strictly controlled, and vibration compaction should be ensured to avoid voids. Lay the bottom steel mesh first, and then lay the upper steel mesh after the concrete is poured (or pour in two times). The specific needs to be adjusted according to the design requirements. Perform maintenance in time after construction to prevent steel corrosion and concrete shrinkage and cracking. Through reasonable design and construction, the double-layer steel mesh can significantly improve the comprehensive performance of concrete pavement, especially suitable for projects with high requirements for durability and safety.

  In a windy environment, to ensure the normal operation of the laser leveler, windproof measures can be implemented from the following aspects: – **Weighted chassis**: Add appropriate weights to the chassis of the laser leveler. Sandbags or special metal weights can be used, evenly distributed around the chassis. For example, for a small laser leveler, a 20-30 kg sandbag can be placed at each corner of the chassis to lower the center of gravity of the equipment and enhance its wind resistance stability. – **Install windproof anchoring device**: Set anchor points at appropriate positions on the fuselage of the leveler and use ground anchors to fix the equipment to the ground. The ground anchor can be a spiral ground anchor or a metal ground anchor with expansion bolts. Drill a hole in the solid ground at the construction site, insert and fix the ground anchor, and then connect the leveler to the ground anchor with an iron chain or high-strength rope. – **Set up a windproof barrier**: Set up a windproof barrier in the upwind direction of the leveler operation area. Windbreaks can be made of materials such as canvas, color steel plates or plastic woven mesh. For example, a 2-3 meter high color steel plate windbreak wall can be built and placed at a certain angle (usually 70-90 degrees) to the wind direction, which can effectively reduce the direct impact of the wind on the leveler. – **Adjust the working time and location**: If the wind is too strong and continuous, you can consider adjusting the working time to avoid the strongest wind period. At the same time, choose a working location with natural windbreak obstacles (such as mountains, buildings, etc.) around to reduce the impact of the wind with the help of these natural barriers. – **Sensor windshield**: Install a windshield for the sensor on the laser leveler. The windshield can be made of transparent plexiglass or plastic, which can prevent wind and sand without affecting the signal reception of the sensor. For example, a hemispherical transparent plastic windshield is installed around the laser receiver, and there are small holes on the cover for ventilation to prevent internal fog from affecting signal reception. – **Laser system reinforcement and windproof**: Reinforce the laser transmitter to ensure that it can maintain a stable emission angle in the wind. At the same time, place the laser transmitter in a windproof location, such as a temporary shed or a sheltered place, to reduce the interference of wind on the propagation of the laser beam and ensure the accuracy of the laser signal. At the same time, we have professional customer service, online 24 hours a day, welcome to call.