Explanation on the operation of small concrete laser leveling machine

  – 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.

    Regular inspection and maintenance of consumables of concrete laser leveling machine is the corePrevent wear and failure of key componentsTo avoid sudden failures during construction that affect flatness and efficiency, it is necessary to execute the work in order of priority based on "wearing parts – precision parts – auxiliary systems". For core consumables that are in direct contact with concrete and wear the fastest, focus on checking the "amount of wear" and "tightening status". Consumables Category Check content Maintenance Action Judgment criteria Leveling scraper/blade 1. Check whether the cutting edge has any notches or curling 1. Use a scraper to clean the remaining concrete to avoid corrosion 1. If the blade wear is greater than 3mm, it needs to be polished; if the chip is greater than 5mm, it needs to be replaced. 2. Whether the surface concrete residue is hardened 2. If the bolts are loose, tighten them with a torque wrench according to the standard torque. 2. The bolts have no thread slippage and no obvious displacement 3. Are the fixing bolts loose? Laser receiver 1. Check if there is dust or concrete slurry attached to the lens 1. Use a clean soft cloth to wipe the lens. Do not use high-pressure water to directly clean the lens. 1. The lens is free of scratches and obstructions 2. Check whether the connecting wire is damaged or the connector is loose. 2. Damaged cables must be replaced immediately to avoid signal interruption 2. The indicator light flashes normally when receiving laser signal Travel wheels/tracks 1. Is the tire pressure normal (pneumatic tire) 1. Fill the tire pressure according to the instructions (usually 0.8-1.2bar) 1. Track teeth wear > 1/3 and need to be replaced 2. Check whether the track shoe has cracks or tooth wear 2. Add lithium-based grease when the bearing makes abnormal noise 2. No deviation or lag when walking 3. Is there any abnormal noise from the wheel bearing? For the transmission, hydraulic, and lubrication system consumables that support the operation of the equipment, focus on checking the "oil status" and "component aging." Hydraulic oil filter: Observe whether there are metal debris and impurities on the surface of the filter element. If the filter element is blocked and the indicator light is on, it needs to be replaced immediately (to avoid impurities from wearing the hydraulic pump). Hydraulic oil pipe/seal ring:  Check whether the oil pipe has bulges or leakage, and whether the sealing ring is deformed or aged. If leakage is found, the corresponding parts should be replaced in time to prevent hydraulic oil loss and insufficient power. Travel motor bearings, scraper drive shaftFor rotating parts, add the specified type of grease (usually 2# lithium-based grease) according to the instructions. The amount of grease added each time should be based on a small amount that overflows from the gap to avoid overheating of the parts due to excessive grease. If it is an electric model, check whether the battery terminals are oxidized or loose. Sand the oxide layer with sandpaper and apply Vaseline to prevent rust. When the battery power is less than 20%, it needs to be charged in time to avoid deep discharge that affects the battery life. For consumables that have a long lifespan but need to be replaced regularly, focus on "performance degradation". Laser transmitter: Check whether the brightness of the laser tube is attenuated (compare with the light spot intensity of a new machine). If the light spot is blurred or the range is shortened, the laser tube needs to be replaced (it is recommended to use original accessories to avoid model mismatch affecting accuracy). Filter elements (air/fuel): The fuel filter and air filter need to be replaced as a whole to avoid blockage after long-term use, which may lead to insufficient engine fuel supply and poor air intake. After replacement, start the machine and run it at idle speed for 5 minutes to check for leaks. Wear parts backup: Reserve 1-2 sets of wearing parts (such as scraper blades, seals, and filter elements) in advance to avoid a shortage of spare parts in the event of a sudden failure, which would affect the construction progress. The core of the maintenance of consumables of concrete laser leveling machine is "High frequency to check wear, medium frequency to maintain operation, low frequency to replace aging parts". Records must be kept for each inspection (such as wear amount, replacement time), and the cycle and parameters specified in the equipment manual must be strictly followed to maximize the life of consumables and ensure construction accuracy.  

First, the use of precautions1. When using, adjust and maintain according to the maintenance methods and various regulations described in the corresponding product manual. 2. It is not allowed to work at full speed and full load immediately after starting. It must be gradually transitioned from low speed and no load to high speed full load. 3. The fuel used in the diesel engine must be clean and should be allowed to stand for more than 72 hours. 4. The normal water temperature (75 °C ~ 95 °C) should be maintained for the diesel engine with radiator. When releasing the cooling water, you must first open the radiator cover (after the water temperature is lowered, then open it to avoid burns), and then unscrew the water discharge switch on the cylinder block. 5. The normal working oil pressure should be 0.2~0.4MPa. 6, the load must be strictly controlled, no overload is allowed, otherwise it will affect the reliability and service life of the diesel engine. 7. After the new or replacement injector, the medium-speed low-load running-in should be carried out, and the running-in time should not be less than 30 minutes. Before installation, the parts should be cleaned with clean kerosene or light diesel oil to remove anti-rust oil. 8. In the course of operation, if abnormal phenomena are found, stop in time. Second, fuel, oil and cooling water 1. Fuel Users should select the light diesel grades to be used according to the season and ambient temperature of the region. Recommendation: Use diesel fuel with a sulfur content below 0.5%. If the sulfur content is high, the oil change cycle will be shortened. Diesel filling and precautions Before the diesel engine is injected into the diesel engine, it must be allowed to stand for more than 72 hours, then the upper layer of clean diesel oil without water and impurities or filtered with silk cloth. Warning: (1) Do not fill fuel tank with fuel while the engine is running. (2) Do not smoke when filling the fuel tank with diesel fuel. (3) Use a clean oil pipe when refueling. Do not splash diesel oil outside. (4) Wipe off the spilled fuel. Materials that are fueled must be moved to a safe place. 2. Lubricating oil The oil must be selected according to the regulations. The viscosity of the oil is greatly affected by the temperature, and the user needs to correctly select the corresponding brand oil according to the ambient temperature. 3.cooling water should use clean soft water: rain, tap water or river water. If you use well water, spring water or other hard water with more minerals, you should add appropriate amount of softener, such as sodium carbonate (soda). The easiest way to do this is to boil the water and then precipitate it to remove impurities and use. In the cold winter, antifreeze can be added to the cooling system to prevent freezing. The most commonly used antifreeze is an aqueous solution of ethylene glycol (glycol) or alcohol. The use of antifreeze should be noted: Since the antifreeze has the characteristics of increasing volume with increasing temperature, when adding the cooling medium, the addition amount should be 5% to 6% less than the total capacity of the cooling system. Ethylene glycol – water-based antifreeze is toxic, special care should be taken when using it, and no entry is allowed. The boiling point of ethylene glycol is 194.4 ° C, so the water in the antifreeze is easy to evaporate, and the alcohol should be properly added after a period of use. If it is not anti-rust antifreeze, it should be removed regularly. When the diesel engine is used for a long time, the surface of the cooling water chamber will form scale, which will affect the heat dissipation of the diesel engine. For this reason, the scale should be cleaned regularly. The cleaning method is as follows: When cleaning, 25% hydrochloric acid solution can be injected into the water chamber and parked for 10 minutes. After that, the solution was drained and washed with water. If the scale is not removed, repeat it again Cooling water filling and precautions: (1) Fill the cooling water to the mark of the filling port. (2) Note that the drain valve is closed after the cooling water flows out from the drain valve. (3) Tighten the filler cap. (4) Start the engine and run to normal temperature until the thermostat is turned on (the cooling water pipe is obviously warmed up during the big cycle). (5) After the first operation, stop cooling and check the liquid level. Inspection and preparation before starting 1. When the new machine is started for the first time, carefully check the tight connection of each part, whether the attachment is complete, and whether the operating mechanism is flexible. 2. Check the oil level of the oil pan and the fuel injection pump between the upper limit mark and the lower limit mark of the oil scale. 3. Check the fuel storage capacity of the fuel tank. Turn on the fuel tank switch to allow diesel to flow to the fuel injection pump and remove air from the fuel system. 4. Check the battery and wiring. Check the electrolyte level in the battery. 5. Check the cooling system and add enough water. 6. In case of cold and freezing weather, the diesel engine should be placed in a cold-proof place. When working in the field, heat the oil sump and add two or three times of hot water to warm the diesel engine before starting. 7. The clutch should be in the separated state when the diesel engine starts. Startup After the preparation work before starting is completed and confirmed to meet the requirements, it can be started. The clutch should be disengaged when starting. The starting steps are as follows: 1. Push the lock switch to start the diesel engine. The starting time is less than 5 seconds each time to protect the starter and battery. After each failed start, stop for 1-2 minutes and start again. If the start fails three times in a row, you should find out the cause and troubleshoot before starting again. Once the diesel engine is started, the starter switch key should be released immediately and the lock switch should be returned to its original position. 2. Check the oil pressure immediately after starting. When the diesel engine is running at idle speed, the oil pressure should not be lower than 0.05MPa. After the newly assembled diesel engine is started for 5 minutes, stop the oil level of the oil pan and check if necessary, add oil so that the oil level is between the upper and lower marks on the oil scale. 3. Within one minute after starting the diesel engine, the water temperature gauge should be checked immediately to confirm that the cooling system is working properly. V. Operation After the diesel engine is started, the full-load operation should not be carried out immediately. The diesel engine should be heated in the idle mode at low speed and medium speed. 1. When operating, always pay attention to the oil pressure and cooling water temperature. When the speed is calibrated, the oil pressure should be 0.2~0.4MPa (2~4kgf/cm) 2. The temperature of the cooling water outlet is controlled at 80-90 °C. 3. When the diesel engine is running, always pay attention to observe whether the reading on the instrument panel is normal, whether there is abnormal sound. If it is found, it should be stopped immediately to check and find the cause and then allow it to start and run again. 4, always pay attention to the sealing of the oil and water connections, if there is a leak, it should be immediately removed. 5. The charging generator must be charged to the battery during operation, and the ammeter pointer points to “+”. 6. New or overhauled diesel engines are allowed to run at full speed at full speed after 50 to 100 hours of operation. Small roller parking 1. Remove the load and gradually reduce the speed to idling for 3 to 5 minutes before parking. 2. When the temperature is lower than 5 °C, if antifreeze is not used, the cooling water should be drained in time after parking to prevent cracking of the body. 3. After each stop, the faults found during operation must be discharged in time, and necessary inspections should be carried out. The diesel engine should be inspected and maintained frequently, and some sporadic faults should be eliminated in time to keep the diesel engine working properly and avoid serious faults. The necessary conditions for good economic returns. Daily maintenance of small road roller: (in combination with inspection preparation work), the driver usually carries out maintenance every day; check the fuel tank fuel quantity and add enough; check the oil level in the oil sump, when it is insufficient, it should be added; check and eliminate leakage and leakage Oil and gas leakage; check the stability of each accessory device; check the liquid level of the water tank.