What are the tips for using a concrete power trowel?

– Check the overall appearance of the trowel to see if there is any damage, cracks or deformation on the body. Focus on checking the trowel disc, trowel and connecting parts to ensure their integrity and firmness. – Check whether the tire pressure is normal and whether there is any damage or bulge on the tire surface. Generally, the tire pressure of a ride-on trowel should be maintained at around 2-3 atmospheres. At the same time, check the steering system to ensure that the steering is flexible and the connections are not loose. – Check the engine (if it is a fuel engine) or the motor (if it is an electric trowel). Check whether the fuel level of the fuel engine is sufficient, whether the engine oil is at the normal level, and whether the air filter is clean. For electric trowels, check whether the battery is fully charged, whether the wire connection is firm, and whether the plug is damaged. – Check the transmission parts, such as the tension of the transmission chain or belt. The chain or belt should not be too loose or too tight. Too loose will result in insufficient power transmission, and too tight may damage the transmission parts. Also check for signs of wear and tear. – Check the sprinkler (if any). Check whether there is water in the water tank, whether the water pipe is tightly connected, and whether the nozzle is blocked. Make sure that the sprinkler can work properly to avoid quality problems on the concrete surface due to lack of water during the troweling process.   – Remove debris, large stones, steel bars and other objects in the work site that may damage the trowel or affect the troweling effect. – If the operation is performed on the surface of newly poured concrete, make sure that the slump of the concrete meets the requirements and that the concrete has been initially vibrated and leveled before the trowel is operated. Generally, the slump of concrete is more suitable between 30 and 50 mm. – Place the trowel on a flat, solid ground and put the gear lever in the neutral position. – Turn on the fuel switch and pull the choke to the appropriate position (if it is a cold start, the choke can be closed more appropriately; if it is a hot start, the choke can be closed less or not closed). – Hold the starter rope handle and pull the starter rope firmly and steadily to start the engine. After the engine starts, gradually open the choke to the appropriate position according to the engine's operating conditions.   – Confirm that the power plug is connected correctly and the surrounding environment is safe (no water, flammable and explosive items, etc.). – Press the start button to start the motor. During the startup process, pay attention to the operation of the motor, such as abnormal noise, vibration, etc. – The operator sits in the driver's seat, keeps his body balanced, and holds the steering wheel or joystick with both hands. The feet can be placed naturally on the pedals to facilitate the forward, backward and steering control of the machine. – During driving, the speed of the trowel should be reasonably controlled according to the size, shape and state of the work site. Generally speaking, the speed can be controlled at 0.5-1m/s in the initial troweling stage; in the fine troweling stage, the speed can be appropriately increased to 1-1.5m/s. At the same time, it is necessary to flexibly control the driving direction of the trowel through the steering system to ensure that the trowel area is fully covered without omission.   – When the trowel reaches the concrete surface, put down the trowel disc and trowel to make it contact with the concrete surface. During the contact process, pay attention to observe the working condition of the trowel to ensure that the trowel can act evenly on the concrete surface. – According to the degree of solidification of the concrete and the requirements of troweling, reasonably adjust the working parameters of the trowel. For example, for concrete in the initial setting stage, the speed of the trowel can be appropriately lowered to avoid excessive disturbance of the concrete surface; for concrete in the final setting stage, the speed can be appropriately increased to obtain a better troweling effect. – During the troweling process, it is necessary to keep the driving route of the trowel neat to avoid crossing, excessive overlap or omission. Generally, the troweling operation can be carried out by straight driving, circular driving or partition operation. – After the troweling work is completed, first raise the trowel disc and trowel to leave the concrete surface. – For fuel engines, gradually reduce the engine speed, then turn off the fuel switch and let the engine shut down naturally. For electric trowels, press the stop button to turn off the motor. – Put the gear lever in the neutral position and pull the handbrake (if any).   – During operation, if the trowel is found to have abnormal conditions, such as engine smoke, abnormal noise, or trowel out of control, an emergency stop should be performed immediately. For fuel engines, the fuel switch can be turned off directly; for electric trowels, press the emergency stop button (if any). After the emergency stop, the machine should be inspected and the fault can be eliminated before restarting. – Clean the dust, concrete residue and other debris on the trowel body. Use a damp cloth to wipe the surface of the body, focusing on cleaning the trowel plate, trowel, tires, transmission parts and other parts. – Clean the water tank (if any) and drain the remaining water in the water tank to prevent the water from breeding bacteria or corroding the water tank.   – Check the various parts of the trowel, such as the wear of the trowel, the tension of the transmission parts, the air pressure of the tires, etc. Deal with or record the problems found in a timely manner for subsequent repairs or maintenance. – Place the trowel in a dry and ventilated place to avoid direct sunlight and rain erosion. If it is not used for a long time, it is also necessary to maintain the machine according to the maintenance requirements for long-term storage.

The concrete laser leveling machine can meet the construction requirements of large area, high flatness and levelness. It plays a very important role in the construction process. After the equipment is used, I believe everyone knows about the maintenance of the leveling machine. In this article, our staff will explain to you the three major maintenance misunderstandings of the concrete laser leveling machine. 1. THE BOLTS ARE TOO TIGHT There are many bolts and nuts on the concrete laser leveling machine. In order to make the connection reliable, it should be ensured that it has sufficient pre-tightening force. However, it should not be mistaken to think that the tighter the bolt is, the better. Blindly increasing the torque of the bolt will not only cause permanent deformation of the fastener due to excessive external force, but also cause the thread to slip or the screw to break due to excessive tension. 2. THE TIRE PRESSURE IS TOO HIGH The tire inflation pressure of the concrete laser leveling machine is the main factor that determines its service life and work quality. When the air pressure is too low, the deformation of the carcass increases, which will cause an increase in internal stress, and accelerate rubber aging and cord fatigue; at the same time, the rolling resistance increases, so the tire shoulder wear increases. However, when the inflation pressure is too high, the tire cord will generate a lot of tension, the resistance to impact will be weakened, and the rock edges will easily damage the tire; at the same time, the tire tread will wear more and cause the tire to slip, which will reduce the working efficiency of the concrete laser leveling machine. 3. ONLY DRAIN THE OIL IN THE OIL TANK WHEN CHANGING THE HYDRAULIC OIL The concrete laser leveling machine has many hydraulic components and needs sufficient hydraulic oil. Whenever the hydraulic oil needs to be replaced due to long-term use and deterioration, there will always be people who mistakenly think that it is only necessary to drain the oil in the hydraulic oil and think that it is enough to fill up new hydraulic oil. In fact, the correct oil change procedure should first let go of the hydraulic oil in the hydraulic oil tank, then clean the oil tank and add new hydraulic oil; then remove the circuit main pipe, start the engine and run it at a low speed, and the oil pump truck will be operated manually. If you have maintenance misunderstandings mentioned in the above article when you are maintaining the concrete laser leveling machine, I hope you can correct it in time and adopt the correct maintenance method to avoid machine failure due to improper maintenance. We will continue to organize and publish information about levelings, and you are welcome to pay attention to our website.

  – 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.