What’s the advantage of a concrete power trowels? How to choose?

  – Under high temperature environment, the engine (if it is a fuel laser leveler) and hydraulic system are prone to overheating. For the engine, make sure that the coolant in the radiator is sufficient and clean. The coolant level should be checked regularly, generally every 8-10 hours of work, and the coolant should be replaced regularly according to the requirements of the equipment manual. It is usually recommended to replace it once a year. – Clean the dust and debris on the surface of the radiator, as these will affect the heat dissipation effect. You can use a compressed air can or a soft brush to gently clean it to avoid damaging the radiator fins. – For the hydraulic system, some laser levelers are equipped with a hydraulic oil cooler. Also ensure that its surface is clean and pay attention to the temperature of the hydraulic oil. If the hydraulic oil temperature is too high, it may cause the performance of the hydraulic system to decline or even damage.   – Try to avoid using the equipment for a long time when the temperature is highest during the day (usually 12 noon-3 pm). Because during the high temperature period, the operating temperature of each component of the equipment is already high, and long-term continuous operation will further aggravate heat accumulation and increase the risk of equipment failure. – The working time can be adjusted to the early morning or evening, when the ambient temperature is relatively low, which is conducive to the normal operation of the equipment. If it is unavoidable to work during high temperature periods, the rest frequency of the equipment should be increased. After every 1-2 hours of work, the equipment should be allowed to rest for 15-20 minutes to allow the various parts of the equipment to fully dissipate heat.   – High temperature will accelerate the evaporation and aging of lubricating oil (grease), so the lubrication of the equipment should be checked more frequently. For example, for the bearings, chains and other parts of the equipment, lubrication may be performed once every 50-100 hours of work. In a high temperature environment, it is necessary to check and add grease every 30-50 hours of work. – At the same time, check the seals of the equipment, such as the seals at the joints of the hydraulic pipes and the engine oil seals. High temperature may cause the seals to age and deform, resulting in leakage. If the seals show signs of damage, they should be replaced in time to avoid leakage of hydraulic oil or coolant, which will affect the normal operation of the equipment. – For fuel-type laser levelers, use fuel suitable for low temperature environments. In cold weather, diesel may wax, which will affect the start and normal operation of the engine. You can add anticoagulants or use low-grade winter diesel to solve this problem. – Battery performance will decrease at low temperatures, so make sure the battery is fully charged. When the equipment is not in use, the battery can be removed and placed in a warm room for charging and storage. In addition, before starting the equipment, the battery can be preheated, such as using a battery heater, which can improve the battery's starting ability.   – The engine should be fully preheated before starting. According to the requirements of the equipment manual, use a preheating device to preheat the engine. The preheating time is generally determined by the ambient temperature. For example, in an environment of about minus 10℃, the preheating time may take 10-15 minutes. – For the hydraulic system and working parts, do not let the equipment work at full load immediately after starting. Let the equipment run at no load for 5-10 minutes to gradually heat up the hydraulic oil and various components. After reaching the normal working temperature, start construction.   – If the equipment is not used for a long time, it should be stored indoors or in a place with insulation measures to avoid exposure to cold outdoor environments. If it can only be stored outdoors, the equipment should be properly covered to prevent damage to the equipment caused by snow and ice. – Antifreeze can be added to the water tank and hydraulic oil tank of the equipment to prevent the water tank and oil tank from freezing and cracking at low temperatures. The amount of antifreeze added should be in accordance with the requirements of the equipment manual. Generally, the concentration of antifreeze should be ensured to effectively prevent freezing at the expected minimum temperature. – Check the electrical system of the equipment to ensure that all electrical components (such as motors, controllers, sensors, etc.) have good waterproof seals. For wire connectors exposed to the outside, waterproof tape or sealant can be used to wrap them to prevent moisture from entering and causing short circuits. – The laser transmitter and receiver of the laser leveling machine should also be waterproof. In humid weather, if these precision components are damp, it may affect the transmission and reception of laser signals, thereby affecting the construction accuracy. You can use a special waterproof cover to protect it. When the equipment is not in use, store these parts in a dry place. – Humid air can easily cause equipment to rust, especially the metal parts of the equipment. Anti-rust oil or anti-rust paint can be applied to the surface of the equipment, and the parts that are prone to rust (such as chassis, scrapers, screws, etc.) should be protected. – Regularly check whether the equipment has signs of rust. For rusted parts, rust removal should be carried out in time. You can use sandpaper or rust remover to remove the rust, and then apply anti-rust oil or touch-up paint. – After working in humid weather, the equipment should be cleaned and dried in time. Use a clean rag to wipe off the moisture on the surface of the equipment. For parts inside the equipment that may be damp (such as the cab, electrical control cabinet, etc.), a hair dryer or dehumidifier can be used to dry them. – At the same time, the working parts of the equipment (such as scrapers, spiral distributors, etc.) should be cleaned to prevent concrete residues and moisture from mixing and solidifying on the parts, affecting the next use of the equipment.

  – Develop an advanced intelligent temperature control system that can monitor the temperature of the engine, hydraulic system and key electrical components in real time. When the temperature approaches the critical value, the system automatically adjusts the working state of the equipment, such as reducing the engine speed or reducing the load of the hydraulic system to prevent overheating. For example, by installing a high-precision temperature sensor in the engine coolant circulation system, when the temperature reaches 90-95℃ (different equipment may vary slightly), the system automatically adjusts the speed of the cooling fan to speed up and enhance the heat dissipation effect. – The intelligent temperature control system can also be combined with remote monitoring technology to transmit the temperature data of the equipment to the operator's mobile device or control center in real time. In this way, even if the operator is not next to the equipment, he can understand the temperature of the equipment in time and take measures in advance, such as arranging equipment rest or adjusting the construction plan. – Use high temperature resistant sealing materials and lubricants in key parts of the engine and hydraulic system. For example, the use of high temperature resistant sealing materials such as fluororubber can effectively prevent leakage problems caused by aging and deformation of seals at high temperatures. At the same time, choose hydraulic oil with good high-temperature performance, which has a high flash point and oxidation stability, can maintain good performance in high-temperature environments, and reduce system failures caused by the decline of hydraulic oil performance. – For the outer surface of the equipment, use reflective heat-insulating coatings. This coating can reflect infrared and ultraviolet rays in sunlight and reduce the heat absorbed by the equipment. For example, nano-ceramic reflective heat-insulating coatings can effectively reduce the surface temperature of the equipment. In a high-temperature environment, the surface temperature of the equipment can be reduced by about 10-15℃. – Optimize the heat dissipation structure of the equipment and increase the heat dissipation area and ventilation channel of the radiator. For example, a fin-type radiator design is used to increase the contact area with the air and improve the heat dissipation efficiency. At the same time, reasonable vents and air guides are designed on the equipment casing, and the natural wind or forced ventilation devices (such as fans) generated when the equipment is running are used to guide the cold air to flow through the key heating components and take away the heat. – For the hydraulic system, an independent hydraulic oil heat dissipation circuit is designed to dissipate the heat of the hydraulic oil through a special cooler. The cooler can be water-cooled or air-cooled, and can be flexibly selected according to the actual construction environment and equipment requirements. – Develop efficient engine preheating system, such as the combination of electric heating plug and intake preheater. The electric heating plug can directly heat the air in the engine cylinder, while the intake preheater preheats the cold air entering the engine. Before starting, the controller automatically starts the preheating program, which can preheat the engine to the appropriate starting temperature (such as 30-40℃) in a low temperature environment of -20℃ in just 5-8 minutes. – For hydraulic systems and working parts, use oil heating technology. Install heating devices, such as oil heaters, in the lubrication system of hydraulic oil tanks and working parts. Before starting the equipment, heat the hydraulic oil and lubricating oil to achieve the appropriate working viscosity, reduce the resistance when the equipment is started, and improve the starting efficiency of the equipment. – Design the battery for low temperature adaptability, such as using cold-resistant batteries or adding special electrolyte additives inside the battery to improve the discharge performance of the battery at low temperatures. At the same time, optimize the insulation structure of the battery, wrap the battery with insulation materials to reduce heat loss. – Choose tire or track materials suitable for low temperature environment. At low temperatures, ordinary rubber will become hard and brittle, affecting the driving performance and comfort of the equipment. Using cold-resistant rubber materials to make tires or tracks can ensure good elasticity and grip in low temperature environments. – Equip the equipment with automated snow and ice removal devices. For example, heating wires are installed on the working parts of the equipment such as scrapers and spiral spreaders. When the equipment is started, the heating wires automatically work to melt the snow and ice on the working parts to prevent them from affecting the normal operation of the working parts. – Set up a small snow blowing device around the walking device (tires or tracks) of the equipment, and use compressed air or fans to blow the snow away from the walking device to ensure that the equipment can travel normally on snowy or icy roads. – Adopt higher-level waterproof sealing technology, such as IP67 or IP68 level sealing standards (IP level is the international code used to identify the protection level, and the larger the number, the higher the protection level). For key components such as electrical control cabinets and motors, use sealing rubber rings, sealing pads and sealants for multiple sealing to prevent water, dust and moisture from entering. – Develop waterproof and breathable membranes to cover the vents and parts of the equipment that may be flooded. This membrane allows air to circulate but prevents water from entering, balancing the air pressure inside the equipment while keeping the equipment dry. For example, using a waterproof and breathable membrane on the housing of the laser transmitter and receiver can prevent water from entering without affecting the transmission of the signal. – Install a dehumidification and drying system that can dehumidify the air inside the equipment using desiccant or the principle of refrigeration and dehumidification. For example, a small dehumidifier is installed in the cab or electrical control cabinet of the equipment. When the humidity sensor detects that the air humidity exceeds the set value (such as 70% – 80%), the dehumidifier automatically works to reduce the air humidity to an appropriate range. – For hydraulic systems and lubricating oil systems, vacuum drying technology is used. During equipment maintenance, the water in the system is extracted by a vacuum pump to ensure the dryness and purity of the oil and extend the service life of the oil. – Intelligent monitoring and protection against rust: – Develop an intelligent monitoring system for anti-rust, and monitor the rust of components in real time by installing corrosion sensors on key metal components of the equipment. The sensor can detect parameters such as humidity, salinity and pH on the metal surface. When these parameters reach critical values ​​that may cause rust, the system will sound an alarm. – Based on the monitoring data, a device for intelligently spraying rust inhibitors is used. When the system determines that rust prevention treatment is required, it automatically sprays rust inhibitors on the parts that may rust, or protects the metal parts of the equipment through electrochemical protection methods, such as cathodic protection technology, to prevent rust.

△ Applicable stage: Before initial setting after concrete pouring (about 1-2 hours after pouring, the specific time depends on the concrete ratio and ambient temperature). △ Operation points: The laser leveler sets the reference plane through the laser transmitter, automatically levels and vibrates the concrete, and quickly completes the rough leveling of a large area. Focus on the corners, column roots and other areas that are difficult for the laser leveler to cover, and manually assist in scraping. △ Applicable stage: after the initial setting of concrete (when there is a slight indentation when pressing with fingers but it is not sticky). Operation steps: △ Disc trowel: First use a disc trowel to perform preliminary slurry lifting and compaction to eliminate surface bumps. △ Blade trowel: After the concrete strength is further improved, use a blade trowel for fine finishing to form a smooth surface. △ Note: The trowel needs to be divided into 2-3 Operate over and adjust the blade angle (from low to high) each time to gradually increase the surface density.   △ The laser leveling machine needs to complete the rough leveling before the initial setting of the concrete to avoid the difficulty of vibrating the concrete after hardening. △ The trowel machine needs to start working after the initial setting of the concrete. Too early will cause sand on the surface, and too late will make it difficult to compact. △ The laser leveling machine is responsible for efficient leveling of large areas, and the trowel machine is responsible for local finishing and surface treatment. △ For the corners that the laser leveling machine cannot reach, it is necessary to manually use a scraper to initially level it, and then the trowel machine will handle it. △ The leveling accuracy of the laser leveling machine must meet the design requirements (such as ±3mm/3m), providing a good foundation for the trowel. △ The angle and speed of the trowel blade need to be adjusted according to the strength of the concrete to avoid over-grinding or under-grinding.   Cover and maintain in time after the operation is completed to prevent surface cracking. The operation interval should be shortened in hot and dry weather to avoid excessive water loss of concrete. The laser leveling machine needs to calibrate the laser transmitter regularly, and the trowel blade needs to clean the concrete residue in time. Through reasonable process arrangement and equipment coordination, the quality and efficiency of concrete construction can be significantly improved, which is suitable for large-scale ground projects such as industrial plants, parking lots, and airport runways.