Maintenance of underground parking lot floor

The problem of uneven cement floors can be solved in a number of ways, one of which is using a floor sander. The following is a detailed answer to the problem of uneven cement floors, as well as detailed instructions on whether a floor grinder can smooth it. ☀Clean the base layer: Use tools to clean the base layer, including floating dust, oil stains, etc., to ensure that the base layer is smooth and clean. ☀Smooth the cement floor: Use cement mortar to smooth the cleaned base layer. During the smoothing process, tools such as a level should be used to ensure that the smoothed cement floor surface is flat. ☀Paving ceramic tiles: If you need to lay ceramic tiles, you should first spread a layer of dry cement mortar on the cement floor and scrape it with a scraper to ensure that the ceramic tiles are laid flat. ☀Use a floor grinder: If the cement floor that has been used is uneven or rough, you can consider using a floor grinder to grind it. A floor sander can remove stains and old coatings from the surface while smoothing the surface. ☀Choose the appropriate grinding disc: Choose the appropriate grinding disc according to the material and roughness of the ground to be polished. Grinding discs come in many different particle size grades. Grinding discs with finer grits are more expensive, but the grinding effect is better. ☀Install the grinding disc: Install the selected grinding disc on the grinder. Pay attention to the front and back sides and direction of the grinding disc to ensure that the grinding disc can operate normally. ☀Turn on the power: Turn on the power switch of the grinder and adjust the switch to the appropriate speed. Generally speaking, the higher the speed of the grinder, the better the grinding effect, but it will also increase noise and wear. ☀Start grinding: Use a hand-held grinder to grind on the ground, and choose different grinding methods according to the actual situation, such as linear grinding, circular grinding, etc. During the grinding process, pay attention to maintaining uniform strength and speed to avoid excessive wear or missed grinding. ☀Turn off the power: After completing grinding, turn off the power switch and remove the grinding disc for cleaning and maintenance. The floor grinder is suitable for grinding and polishing various hard floor materials, such as cement floors, ceramic tile floors, terrazzo floors, etc. At the same time, it can also be used for renovation and repair of old floors. ☀Before using the floor grinder, be sure to check whether the power cord and plug are intact to avoid leakage or electric shock. At the same time, make sure that all parts of the machine are installed correctly, especially the direction and tightening of the grinding discs. ☀During use, pay attention to maintaining safe posture and operating methods. Generally speaking, grinders should be held with both hands to avoid excessive pressure and uneven wear caused by one-handed operation. At the same time, be careful to avoid excessive force or rapid movement to avoid damage to the machine or personal injury. ☀During the grinding process, pay attention to the flatness and roughness of the ground. If you find that there are serious unevenness or stains on the ground, you should deal with them accordingly before continuing to polish. At the same time, appropriate grinding discs and grinding methods should be selected according to the actual situation to ensure grinding quality and efficiency. ☀After use, turn off the power in time and perform cleaning and maintenance. Clean the grinding disc and the dust and debris inside the machine, check each component for damage or wear, and replace or repair it in time if necessary. At the same time, regular care and maintenance should be carried out in accordance with the instructions provided by the manufacturer. Note: The parameters provided in this document are for reference only and are not mandatory. Due to differences in technical characteristics between different brands and models of laser levelers, please consult the manufacturer for a suitable solution before actual operation. This reference document assumes no responsibility for any issues arising from failure to follow the manufacturer's instructions.    

VANSE laser leveling machine training and after-sales service after purchasing the machine Shandong VANSE Machinery Co., Ltd. not only sells laser leveling machines, but also assists customers to complete projects and meet high-standard construction requirements. The so-called assisting customers to do projects means that our company's personnel will operate in the early stage of construction, and provide systematic training to the customer's construction personnel at the same time, which can be roughly divided into the following three steps: 1. The first job after the machine is sold is the pre-construction work. Our staff will explain the construction process, installation, and commissioning of the machine to the customer in detail: 1) After the base level is processed, the equipment of the laser leveling machine is adjusted, and the fixed reference level is drawn according to the original level point; the plastic film is laid, the steel mesh is bound (according to the design requirements), and the side formwork is supported; the laser transmitter is erected , introduce the floor level into the laser leveling machine according to the original benchmarking point. 2) Convey concrete, use commercial concrete, and transport it to the construction site with concrete trucks. 3) Scale calibration Use a hand-held receiver to check the floor elevation, introduce the elevation into the laser leveling machine, and adjust the reference point (±0.00) on the leveling machine. 2. Prepare well for the construction. During the construction, we will explain in detail the training and operation of the machine, the on-site construction, and the solutions to the problems that are easy to occur during the learning construction: 1) Concrete paving, within the effective construction range of the leveling head of the laser leveling machine, the concrete is initially leveled manually to a height of 1-2 cm higher than the floor level (the specific height depends on the slump of the concrete), and then the concrete The laser leveling machine completes the vibration, compaction and leveling work at one time. 2) Troweling and finishing. When the poured concrete reaches initial setting, it is polished by a trowel machine, and then manually troweled and finished. 3. After construction, we will explain to customers in detail the maintenance of the machine, different types of engineering construction methods, and different standard construction methods: 1) After each construction, you need to use the arm lift button to manually lift the machine head, and then exit the construction site. During this process, be careful not to push the machine when the vibration leveling part is in contact with the ground, otherwise it is easy to cause damage to the vibration plate. Moreover, after the construction is completed, it is necessary to flush the machine with a high-pressure water gun in time to prevent the water gun from being directly aimed at the mesh part of the fuselage for washing, so as to prevent water from entering the inside of the fuselage and causing problems such as short circuit of the machine circuit. 2) In addition, pay attention to the maintenance of the concrete floor. After the concrete is troweled, it is not allowed to move heavy objects on the floor for at least 7 days, and it should be kept in a moist curing state. In order to achieve a good maintenance effect, the surface should be covered to isolate the concrete from the outside. During the maintenance period, when the strength of the surface concrete does not meet the requirements, it is strictly forbidden to use people; the cutting seam should be in accordance with the design requirements, and the surface treatment of the floor should be completed. It is to be carried out later, that is, to ensure that it is carried out before the final setting of the concrete. The spacing, width, and depth of the cuts must meet the requirements of the design and construction specifications; the joints should be filled and protected until the concrete reaches its strength before it can be used. Our Shandong VANSE Machinery has a standard, that is, the customer's construction personnel are proficient in operating the machine, can do the on-site construction well, and complete the three training procedures to meet the standards of Party A and the customer's approval, and our company's staff can leave the site.

    Before a concrete laser leveling machine that has been idle for a long time is reactivated, a systematic inspection should be carried out to eliminate potential faults (such as component rust, circuit aging, hydraulic jamming, etc.), and the equipment performance should be restored in combination with maintenance to avoid construction quality problems or safety accidents caused by component failure when it is reactivated. The following are the specific inspection and maintenance steps, which are disassembled according to the logic of "appearance → core system → auxiliary components → trial operation" First, inspect thex eterior of the equipment and its easily worn parts, with a focus on checking for physical damage, rust or loosening caused by long-term idleness. This is the foundation for ensuring subsequent system checks. Check whether the frame of the machine body, the leveling scraper and the vibration beam have any deformation or cracks (especially at the welding parts). If there is any slight deformation, it needs to be corrected. If there are cracks, they need to be repaired by welding and ground smooth. Check whether all exposed metal parts (such as bolts, pins, and connecting brackets) are rusted. Rusted areas should be cleaned with a wire brush and then coated with anti-rust oil. Severely rusted parts (such as pins that are stuck) need to be replaced. If it is a wheeled model: Check whether the tire pressure is normal (refer to the standard value in the equipment manual), whether there are cracks, bulges or foreign objects embedded in the tire surface, and whether the valve stems are leaking. If it is a tracked model: Check whether the track plate is excessively worn (the tread depth should be replaced if it is less than 1mm), whether the track tension is appropriate (press the middle section of the track with your hand, and the subsidence should be controlled within 10-15mm), and whether the track pin shaft is stuck (try to rotate it after injecting grease). Check whether the protective covers of the emergency stop button and the operating handle are intact. After the emergency stop button is pressed, it should be able to immediately cut off the power and start normally after resetting. Check whether the warning lights and buzzers are functioning properly (test after power-on), and whether the safety guardrails and anti-slip steps are firm, without any looseness or missing parts.   The core performance of the laser leveling machine machine relies on the power system, hydraulic system and laser control system. It is necessary to check each internal potential hazard one by one to avoid "breaking down" or precision failure when it is put into use. Type Inspection items Maintenance measures Diesel engine 1. Oil level and quality If the engine oil is below the mark, it needs to be replenished (using the same type of engine oil). If it deteriorates (turns black or contains impurities), it should be completely replaced 2. Fuel tank and fuel quality 2. Drain the deteriorated diesel from the fuel tank, clean the tank and then add new diesel. Check if the fuel filter element is clogged (if it is clogged, it needs to be replaced). 3. Coolant level 3. If the coolant is insufficient, it needs to be replenished. (Mix the antifreeze in proportion and avoid adding tap water directly.) 4. Air filter element 4. Remove the air filter element and blow it clean in reverse with compressed air (if the filter element is damaged, it needs to be replaced). 5. Spark plugs/fuel injectors 5. Remove the spark plugs to clean the carbon deposits (if the gap is abnormal, adjust it). The fuel injectors need to be disassembled to check the atomization effect (if the atomization is poor, clean it). Electric motor 1. Motor housing and terminal blocks Clean the dust off the motor casing and check if the terminal blocks are loose or oxidized (oxidation should be sanded with sandpaper). 2. Carbon brushes (if any) When the carbon brush is worn down to one-third, it needs to be replaced to ensure good contact between the carbon brush and the commutator 3. Insulation resistance 3. Measure the insulation resistance with a megohmmeter. A resistance of ≥0.5MΩ is qualified (to avoid leakage). Long-term idleness of the hydraulic system is prone to deterioration of the oil and aging of the sealing parts, which requires special inspection: Hydraulic oil inspection: Open the oil tank cover and observe the color of the oil (normally light yellow. If it turns black or becomes turbid, it needs to be replaced) and the liquid level (it should be within the range of "MIN-MAX" on the oil gauge. If it is insufficient, add the same type of hydraulic oil). If the oil has been idle for more than six months, it is recommended to replace it even if its appearance is normal (the oil will oxidize and become ineffective). Leakage inspection: Check the hydraulic oil pipes, joints, and cylinders (especially the leveling cylinder and traveling cylinder) for any leakage marks. If leakage is found, replace the sealing parts or damaged oil pipes. The joint should be re-tightened according to the manual torque (to avoid over-tightening and damaging the thread). Maintenance of hydraulic components Clean the hydraulic oil filter element (if it is a paper filter element, replace it if it is clogged) to prevent impurities from entering the cylinder and causing wear. Manually push the piston rod of the oil cylinder to check for any jamming (if there is jamming, disassemble the oil cylinder to clean the internal impurities and refill the hydraulic oil). Before starting the equipment, manually rotate the coupling of the hydraulic pump to ensure there is no jamming (to avoid damage to the pump body). The laser system is the "eyes" of the leveling machine. When idle, it is prone to sensor moisture and poor circuit contact, and precise inspection is required Laser emitter Clean the dust off the transmitter lens (wipe it with a soft cloth to avoid scratches), and check the battery power (replace it if insufficient). Power on and test whether the transmitter can emit laser normally (the laser line should be uniform and free of flicker). If the laser is weak or there is no laser at all, check the internal circuit or replace the transmitter. Laser receiver Check whether the receiver probe is damaged or damp (if damp, it needs to be dried), and whether the terminal blocks are loose. Bring the receiver close to the transmitter to test if it can receive signals normally (the indicator light needs to switch normally according to the "high and low positions"). If the signal is unstable, the receiver needs to be calibrated (perform zero point calibration according to the steps in the equipment manual). Control circuit: Check whether the connection lines of the laser control system (from the receiver to the controller, and from the controller to the hydraulic valve) are damaged or aged. The line joints need to be re-plugged and unplugged to ensure good contact (to avoid signal interruption and accuracy deviation).   Apart from the core system, minor issues with auxiliary components may also cause the equipment to fail to operate normally. Each one needs to be confirmed Check the battery level (measure the voltage with a multimeter. For a 12V battery, a voltage of ≥12.4V is normal. If it is insufficient, it needs to be charged; if it has been idle for more than 3 months, it needs to be charged before use to avoid battery depletion and scrapping). Clean the dust inside the distribution box, check whether the fuses are intact (replace the fuses of the same specification if they are blown), and whether the contacts of the relays and contactors are oxidized (if oxidized, sand them with sandpaper). Apply grease to the "lubrication points" marked in the equipment manual (such as walking bearings, scraper connection shafts, and laser receiver rotating shafts) (use lithium-based grease and avoid mixing different types of grease). Each lubrication point should be filled until grease overflows (ensure adequate lubrication). Diesel model: Check whether the fuel pump and fuel line are unobstructed (you can manually pump fuel to remove air), and whether the exhaust pipe is blocked (clean carbon deposits). For electric models: Check if the charger is functioning properly (the indicator light needs to switch normally during charging), and if the cable is damaged (any damage should be repaired with insulating tape to prevent leakage). After completing all inspections and maintenance, it is necessary to conduct a trial run to confirm that the equipment is free of faults and avoid direct construction under load. Start the equipment (engine/motor), let it idle for 5 to 10 minutes, and observe whether the power system is stable (without abnormal noise or vibration) and whether there is any leakage in the hydraulic system. Test each action of the operation handle: walking (forward/backward, turning), lifting and lowering of the leveling scraper, and vibration of the vibrating beam. Ensure that the actions are smooth and without any lag. The laser control system can normally control the leveling height (for example, when the receiver detects the laser offset, the equipment can automatically adjust the height of the scraper). Lay a small amount of concrete (about 10-15cm thick) in an open area, start the equipment for leveling operation, and inspect: Whether the walking speed is uniform (no sudden fast or slow); Whether the vibration frequency of the vibrating beam is normal (no abnormal noise, no obvious honeycomb on the concrete surface); The flatness of the concrete surface after leveling (measured with a 2-meter straightedge, the error should be ≤3mm/2m, meeting the construction standards). During the trial operation, if any abnormality is detected (such as noise, leakage, or accuracy deviation), the machine must be stopped immediately and the fault rechecked.   Refer to the equipment manual: The structure of laser leveling machine machines of different brands may vary. All inspections and maintenance should be based on the parameters in the equipment manual (such as hydraulic oil type, lubrication point position, torque value) to avoid misoperation. Pre-idle record: If conditions permit, a record should be made before the next idle period (such as the time of oil change and the status of components) to facilitate targeted inspection during the next activation. Safety precautions: During inspection and maintenance, the power source must be cut off (remove the key, disconnect the negative terminal of the battery) to prevent accidental start-up. Safety belts must be worn during high-altitude inspections (such as the installation of laser emitters) to prevent falls. Through the above steps, the potential risks of long-term idleness can be comprehensively eliminated, ensuring that the laser leveling machine machine performs stably and meets the precision standards after being reactivated, and avoiding rework or safety accidents caused by equipment failure during construction. Note: The parameters provided in this document are for reference only and are not mandatory. Due to differences in technical characteristics between different brands and models of laser levelers, please consult the manufacturer for a suitable solution before actual operation. This reference document assumes no responsibility for any issues arising from failure to follow the manufacturer's instructions.