How to take care your concrete laser leveling when you use it

1. Main technical content Large-area floor laser leveling machine application technology is an emerging concrete floor construction technology. It uses laser leveling machine as the main equipment, coupled with slurry lifter, automatic polishing machine and manual auxiliary leveling and polishing. The method of leveling and polishing the concrete surface has begun to be widely used in various large-area super-flat floor construction in my country. This technology uses precision laser technology, closed-loop control technology and a highly precise hydraulic system to achieve level control under automatic computer control. Relying on the hydraulically driven leveling head, combined with the laser system and the computer control system, the leveling work is completed while automatically leveling. The computer control system automatically adjusts the elevation 5 times/s in real time to achieve flatness control, and exerts the vibrating function while leveling. The leveling head of the laser leveling machine is equipped with an integrated scraper, vibrator and leveling beam. The vibration frequency of the vibrator reaches 3000 times/min. It integrates leveling and vibrating work and completes it in one go. Greatly improve the uniformity and compactness of concrete and enhance the surface hardness of concrete. Achieve technical quality requirements and project progress requirements that traditional construction methods cannot achieve. 2.Technical indicators The laser leveling machine is mainly composed of two parts: the leveling head and the body. The leveling head is responsible for leveling concrete projects and consists of scrapers, vibrators, leveling beams, laser receivers, cloth spirals and other components. At the same time, it is also equipped with laser transmitters, receivers and other accessories. 3. Analysis of economic and environmental effects (1) One-time molding. The traditional leveling process requires secondary operations on the concrete project, and some parts need to be reworked. However, the laser leveling machine can achieve one-time molding, integrating multiple processes such as mixing, leveling, vibrating, and vibrating into one machine. Complete, improving efficiency and eliminating the need for patching operations. Suitable for dry hard concrete, fiber concrete and large aggregate concrete, the concrete density can be increased by more than 20%. (2) Mechanized construction reduces labor requirements. The application technology of large-area floor laser leveling machines adopts mechanized operations to reduce work intensity and improve work efficiency. The leveling construction efficiency is 4-5 times that of traditional leveling operations. (3) High leveling accuracy. The application technology of large-area floor laser leveling machine achieves excellent floor construction in one go (ground level ≤15mm, 3m inspection with ruler, flatness allowable deviation 3mm, flatness allowable deviation within the overlap range of 1.5m ≤3mm), exceeding The flat floor has a pure color and a good look and feel. Improve the company's construction level and market competitiveness in the field of large-area floor construction. Achieve good social benefits. 4. Scope of application (1) Floors of electronics, microelectronics, communication products, computer production industries, and large precision instrument factories that require a high degree of cleanliness, beauty, dust-free, sterility, and anti-static. (2) Warehouse, workshop, and garage floors are required to be wear-resistant, heavy-pressure resistant, impact-resistant, and chemical-resistant. (3) Suitable for large-area factories, warehouses, logistics centers, airports, buildings and floors with high flatness requirements.

    As an important equipment in modern construction, the efficient and precise leveling performance of concrete laser leveling machine greatly improves the quality and efficiency of the project. However, the long-term stable operation of any equipment is inseparable from scientific and reasonable maintenance. Therefore, determining the maintenance cycle of concrete laser leveling machine is a vital task. This article will discuss in depth how to determine the maintenance cycle of concrete laser leveling machine from the aspects of equipment use frequency analysis, working environment investigation, manufacturer recommended cycle, component wear inspection, maintenance record, maintenance cost analysis, and safety and performance evaluation. 1. Equipment use frequency analysis + – The use frequency of concrete laser leveling machine is one of the important factors affecting its maintenance cycle. The higher the frequency of equipment use, the faster the wear and aging of its internal mechanical parts, so more frequent maintenance is required. For equipment with high frequency use, the maintenance cycle should be shortened to ensure that the equipment is always in good working condition. On the contrary, for equipment with low frequency of use, the maintenance cycle can be appropriately extended Avoid unnecessary waste of resources. When conducting a frequency analysis, we need to carefully record each use of the equipment, including information such as usage time, workload, and working environment. Through the statistics and analysis of these data, we can derive the average frequency and characteristics of the equipment, which provides an important basis for determining the maintenance cycle. 2. Working environment inspection + – The working environment of the temperature-soluble soil laser leveling machine also has an important impact on its maintenance cycle. The equipment works in a harsh environment, such as dust, high temperature, etc., which will accelerate the corrosion and wear of its components. Therefore, when determining the maintenance cycle, the impact of the working environment must be fully considered. We should conduct on-site inspections of the working environment of the equipment to understand factors such as humidity, temperature, and dust concentration in the environment. At the same time, it is also necessary to pay attention to whether the equipment is often exposed to corrosive substances or subjected to strong mechanical shock during work. Based on this information, we can make appropriate adjustments to the maintenance cycle of the equipment to adapt to different working environments. 3. Manufacturer recommended cycle + – Equipment manufacturers usually give recommended maintenance cycles based on the design and manufacturing process of the equipment. These recommended cycles are usually based on the normal service life and expected wear of the equipment, and have certain reference value. When determining the maintenance cycle of the concrete laser leveling machine, we should refer to the recommended cycle provided by the manufacturer and make comprehensive considerations based on the actual use of the equipment and the working environment. If the equipment does not have any abnormal situation during use and the working environment is good, then maintenance can be carried out according to the cycle recommended by the manufacturer. However, if the equipment fails frequently or the working environment is bad, the maintenance cycle may need to be shortened. 4. Component wear inspection + – The various components of the concrete laser leveling machine will wear during use, and the different degrees of wear will directly affect the performance and life of the equipment. Therefore, regular wear inspection of the components of the equipment is an important basis for determining the maintenance cycle. When inspecting component wear, we should focus on the vulnerable parts and key components of the equipment, such as blades, bearings, seals, etc. By checking the wear of these components, we can understand the overall operating status of the equipment and then determine whether maintenance is needed. At the same time, according to the wear law of the components, the future wear trend can be predicted to provide a basis for formulating maintenance plans. 5. Maintenance records + – Maintenance records are important data reflecting the maintenance of equipment. By analyzing the maintenance records, we can understand the historical maintenance of the equipment and the operating status after each maintenance. This information is of great significance for determining the maintenance cycle. We should establish a complete maintenance record system to record the time, content, personnel and other information of each maintenance in detail. At the same time, we should also track and record the operation of the equipment after maintenance. Through the statistics and analysis of these records, we can find potential problems in the operation of the equipment, so as to carry out preventive maintenance in advance. 6. Maintenance cost analysis + – Maintenance cost is one of the important factors to be considered when determining the maintenance cycle of wet concrete laser leveling machine. Too frequent maintenance will increase maintenance costs, while too long maintenance cycle may lead to more equipment failures and increase the cost of overhaul or replacement of parts. Therefore, we need to conduct a comprehensive analysis of the maintenance cost of the equipment. This includes counting the cost of each maintenance and repair, and analyzing the relationship between the cost and the maintenance cycle. By finding the best balance point, we can reduce maintenance costs while ensuring the normal operation of the equipment. When conducting maintenance cost analysis, it is also necessary to consider the purchase cost and expected service life of the equipment. If the purchase cost of the equipment is high and the expected service life is long, then when determining the maintenance cycle, more attention should be paid to the long-term stable operation of the equipment and the reduction of long-term costs. 7. Safety and performance evaluation + – Safety and performance are key indicators for the operation of concrete laser leveling machines, and are also important bases for determining maintenance cycles. The safety of equipment includes the safety of operators and the safety of the equipment itself, while performance is directly related to construction quality and efficiency. Therefore, we need to regularly evaluate the safety and performance of the equipment. This includes checking whether the safety protection devices of the equipment are intact, whether the operation is convenient, and whether the operation is smooth. At the same time, it is also necessary to test and evaluate the performance indicators of the equipment, such as leveling accuracy and work efficiency. Based on the evaluation results of safety and performance, we can adjust the maintenance cycle. If the safety and performance of the equipment decline or fluctuate, the maintenance cycle should be shortened, and the problem should be checked and solved in time. On the contrary, if the safety and performance of the equipment are stable and good, the maintenance cycle can be appropriately extended. In summary, determining the maintenance cycle of the concrete laser leveling machine requires comprehensive consideration of equipment use frequency, working environment, manufacturer recommended cycle, component wear inspection, maintenance records, maintenance costs, safety and performance evaluation, and other aspects. Only by comprehensively considering these factors can we formulate a scientific and reasonable maintenance plan to ensure the long-term stable operation and efficient construction of the equipment. 8. Specific implementation of safety and performance evaluation + – When implementing safety and performance evaluation, it is necessary to first provide professional training to operators to ensure that they are familiar with the various safety operating procedures of the equipment and can correctly identify and deal with potential safety hazards. At the same time, the equipment manager or maintenance engineer also needs to conduct regular equipment inspections, focusing on whether the safety protection devices and warning signs of the equipment are complete and clear to ensure the safety of the operators. In terms of performance evaluation, professional testing equipment and methods can be used to quantitatively evaluate the various performance indicators of the concrete laser leveling machine. For example, by measuring the leveling accuracy and efficiency of the equipment, the performance status of the equipment can be intuitively understood. At the same time, the performance of the equipment can also be comprehensively evaluated in combination with the actual needs of the construction to determine whether it is necessary to adjust the maintenance cycle or take other improvement measures. In addition, with the continuous advancement of technology and the upgrading of equipment, we also need to pay attention to the safety performance and performance characteristics of the new concrete laser leveling machine. By comparing and analyzing the differences between new equipment and existing equipment, we can provide a reference for formulating a more scientific and reasonable maintenance cycle. 9. Dynamic adjustment of maintenance cycle + – It should be noted that the maintenance cycle of the concrete laser leveling machine is not static. With the increase of equipment use time, changes in working environment and technological progress, the maintenance cycle may need to be adjusted dynamically. Therefore, we should establish a dynamic maintenance cycle adjustment mechanism. This includes regular evaluation and analysis of the equipment's operating conditions, component wear, maintenance costs, etc., and timely adjustment of the maintenance cycle based on the evaluation results. At the same time, it is also necessary to pay attention to changes in industry standards and best practices, and promptly apply new experiences and practices to the maintenance of equipment. 10. Conclusion + – In summary, determining the maintenance cycle of concrete laser leveling machines is a complex and meticulous process that requires comprehensive consideration of multiple factors. Through scientific analysis, reasonable evaluation and dynamic adjustment, we can formulate a maintenance plan that meets the actual needs of the equipment, ensure the safe and stable operation of the equipment and efficient construction, and at the same time, this will also help reduce the maintenance cost of the equipment, extend its service life, and provide strong guarantees for the sustainable development of the enterprise. In future work, we should continue to deepen the research and practice of the maintenance cycle of warm concrete laser leveling machines, constantly explore new methods and means, improve the maintenance level and management efficiency of equipment, and at the same time strengthen exchanges and cooperation within the industry, share experience and resources, and jointly promote the progress and development of maintenance technology for concrete laser leveling machines.

  Laser leveling concrete wear-resistant floor refers to the use of laser leveling machines to perform high-precision and rapid leveling operations on concrete, thereby obtaining a concrete wear-resistant floor that meets high standards in terms of flatness, levelness, density and strength.   The concrete laser leveling machine uses laser as the reference plane, and emits rotating laser through the laser transmitter. The laser signal is captured by the laser receiver on the leveling machine. The received signal is deeply analyzed by the laser measurement and control system, and any deviation will be accurately identified and fed back to the highly sensitive computer control system on the leveling machine. Based on this feedback information, the leveling machine will intelligently adjust the height of the scraper or leveling head to ensure the accuracy of the leveling operation. At the same time, the hydraulically driven vibration motor drives the vibration plate to vibrate the concrete to further compact the ground.   (1) Construction preparation Material preparation: Ensure the quality of concrete materials. Polycondensate high-efficiency water reducer can be added to reduce the risk of cracking. At the same time, prepare the required wear-resistant aggregates, interface agents and other materials. Equipment preparation: Transport and place laser leveling machines, trowels, trimmers, vacuum cleaners and other equipment to the designated location on site, and perform maintenance work to ensure that the equipment is in good standby condition. Base treatment: Mill the base to increase the adhesion between the leveling layer concrete and the base. Clean the surface of the concrete base plate and use a high-pressure water gun to thoroughly rinse the floor surface. Sweep mortar or apply special interface agent as needed. (2) Formwork setting and steel bar laying Formwork setting: Set the formwork according to the design requirements, ensure that the formwork support is on the same horizontal line as the elevation, and use a special formwork frame to set it at an inclined angle to facilitate subsequent construction. Rebar laying: Adding steel bars to concrete can effectively increase the tensile strength of concrete and prevent cracking. The steel mesh should be placed 20mm~30mm away from the floor surface, which not only increases the tensile strength of concrete but also protects the surface from cracks. (3) Concrete paving and laser leveling Concrete paving: The mixed concrete is pumped and spread on the crushed stone base. The paving speed should be appropriate, and manual leveling should be assisted quickly. Ensure that the concrete construction thickness meets the design requirements. Laser leveling: Use a laser transmitter to determine the height of the concrete paving construction, and use a laser leveling machine to perform leveling operations. During the leveling process, one person should be responsible for moving the laser leveling machine, and two people should be responsible for the front-end auxiliary leveling to ensure that the concrete surface remains at the designed height (4) Initial grinding and slurry breaking and throwing wear-resistant aggregates Initial grinding and slurry breaking: When the concrete is initially set, use a single-disc and double-disc trowel to repeatedly rub and level the concrete slurry. The best time is when there are no clear footprints left by people on the concrete. Spreading wear-resistant aggregate: Spread the specified amount of wear-resistant material evenly on the surface of the concrete just after the slurry is broken. Special materials can be considered as specific conditions and spread more than twice. After each spreading, use a trowel to grind and compact the aggregate. Finishing and maintenance Finishing operation: Depending on the degree of hardening of the concrete, perform at least three trowel operations without a disc. The speed and angle of the trowel should be adjusted according to the degree of hardening of the concrete. The corners can be manually scraped. Maintenance: After the construction is completed, it takes more than 28 days to maintain. Sprinkle water for maintenance and lay soil cloth to reduce water evaporation and keep the wear-resistant floor after construction in water. (5) Cutting expansion joints and subsequent treatment Cutting expansion joints: After the concrete has been sprinkled with water for a certain period of time (such as 24 hours), cut the expansion joints according to the design requirements. The setting of expansion joints should take into account the expansion and contraction space of concrete to prevent cracking. Subsequent treatment: Clean and fill the expansion joints after cutting to ensure the beauty and practicality of the floor.   The construction requirements of laser-leveled concrete wear-resistant floor are strict, covering material selection, construction equipment, construction process, construction environment and other aspects. The following is a detailed summary of these requirements: (1) Material requirements: Concrete Strength grade: C25~C30 concrete, 28-day strength not less than 25MPa. Water-cement ratio: not more than 0.5, no water should be added at will during the feeding process. Cement: ordinary silicate cement with a grade not less than 42.5 should be used. Bone material: well-graded, coarse bone material is crushed granite or pebble, with a maximum diameter not more than 25mm; fine bone material is clean river sand, with a fineness modulus of 2.4~2.7. Concrete mix ratio: cement dosage is not less than 350Kg/m³, and the sand ratio is controlled at 35%~40%. Concrete slump: 14±2cm, maximum 16cm. Setting time: The initial setting time is controlled within 3-5 hours. Wear-resistant aggregate: The amount of wear-resistant aggregate is not less than 5kg/㎡, and it is evenly spread in batches to ensure wear resistance and flatness. (2) Construction equipment requirements Concrete laser leveling machine: Ensure that the laser transmitter and receiver work normally, without dead corners, and can monitor and control the ground elevation in real time. Other auxiliary equipment: Including concrete mixing station, pumping equipment, trowel, trimmer, vacuum cleaner, etc., to ensure that the equipment is intact and meets the construction requirements. (3) Construction process requirements Preparation work: Including laying the base, steel mesh, setting the transmission rod, placing the buffer zone, etc., to ensure that the foundation is firm and flat. Concrete paving: Pump concrete to the site and manually assist in leveling to ensure that the concrete is evenly distributed. Laser leveling: Use a laser leveling machine for high-precision leveling to ensure that the ground flatness and levelness meet the requirements. Initial grinding and breaking of slurry: When the concrete is initially set, use a trowel to perform initial grinding and breaking of slurry to remove the concrete slurry. Spreading of wear-resistant aggregate: Spread wear-resistant aggregate evenly in batches and compact and grind with a trowel. Finishing: Perform multiple finishing operations according to the hardening of the concrete to ensure that the floor is smooth and free of defects. Maintenance: After the construction is completed, perform maintenance for more than 28 days to ensure the strength and durability of the concrete. (4) Construction environment requirements Temperature: Avoid construction in extremely high or low temperature environments to prevent the concrete from drying or condensing too quickly. Humidity: Keep the construction environment moderately moist to prevent the concrete from losing water too quickly and causing cracks. Avoid wind and rain: The newly constructed concrete floor should not be exposed to sunlight, wind, rain and other environments that are unfavorable to the health of concrete. (5) Other requirements Cutting expansion joints: Cut expansion joints in time to prevent concrete from cracking due to expansion and contraction. Construction sequence: Ensure that the construction sequence such as concrete feeding speed, leveling speed, polishing time is reasonable to avoid problems such as cold joints. Personnel coordination: Manual and mechanical construction to ensure construction quality and efficiency. Safety requirements: Comply with construction safety regulations to ensure the safety of personnel and equipment.   (1) Protection principles Timeliness: After the construction is completed, protective measures should be taken as soon as possible to prevent the floor from being polluted and damaged. Comprehensiveness: The protective measures should cover the entire floor, leaving no dead corners, to ensure comprehensive protection. Targetedness: Develop targeted protection measures for different construction environments and floor uses. (2) Protection measures Covering protection Maintenance blanket or non-woven fabric covering: Within 5-10 hours after the construction is completed, use a maintenance blanket or special maintenance non-woven fabric to cover the floor and water it to keep it moist to prevent the floor from drying out too quickly and causing cracks. Film covering: In certain circumstances, such as before the steel structure is hoisted, a film can be used to cover the floor to prevent components from falling and damaging the floor. Isolation protection Set up guardrails: Set up guardrails for the completed floor area to prohibit people from entering at will to prevent trampling and pollution. Warning signs: Set up eye-catching warning signs at places such as doors where people frequently enter and exit to remind people to pay attention to protecting the floor. Anti-collision protection Fully spread earth cloth or wooden formwork: During the hoisting operation, the floor is protected from collision by fully spread earth cloth or densely spread wooden formwork. Take anti-fall measures: Small objects such as tools and screws (caps) should be packed in special tool bags to prevent them from falling and damaging the floor. Anti-pollution protection Apply special concrete sealing wax: Apply special concrete sealing wax on the floor surface to form a surface wax coating to prevent pollution and damage. Receiving bucket setting: During the hydraulic test of electromechanical installation, arrange the water inlet and outlet positions to prevent the test water from flowing into the floor. At the same time, place the receiving bucket at the joint position to prevent leakage from polluting the floor. Repair measures Small pit repair: If the floor has small pits and other damage, it can be repaired with a special adhesive SBR. Finished product protection team: Establish a special finished product protection team to be responsible for daily inspection and maintenance of the floor, and promptly discover and deal with damage problems. (3) Protection period and supervision Protection period: According to the specific situation of the floor and construction requirements, determine a reasonable protection period to ensure that the floor is fully protected during the maintenance period. Supervision and inspection: Regularly inspect the floor to ensure that the protection measures are effectively implemented. Violations of protection measures will be corrected and punished in a timely manner.     ①Material preparation: Ensure the quality of concrete materials. The concrete specifications must meet the design requirements, such as C25~C30 concrete, and the 28-day strength is not less than 25MPa. The aggregate grading is good, the maximum particle size of coarse aggregate is not more than 25mm, and the fineness modulus of fine aggregate is moderate. Ordinary silicate cement with a cement grade of not less than 42.5. Equipment inspection: The laser leveling machine and auxiliary equipment (such as mixing station, pumping equipment, trowel, etc.) should be intact and overhauled to ensure normal operation during construction. Check whether the laser transmitter and receiver are working properly, ensure that the laser signal has no dead corners, and can monitor and control the ground elevation in real time. Base treatment: The base should be flat, solid, free of oil and debris to ensure good bonding between the concrete and the base. After the base is treated, it should be inspected and accepted, and the next step can be carried out only after it is qualified. ② Matters needing attention during construction Concrete paving: The minimum hourly feeding speed of concrete should be determined according to the ground thickness and pouring area to avoid cold joint problems. When manually assisted leveling, attention should be paid to the uniform distribution of concrete to avoid large piles falling. Laser leveling: When using the laser leveling machine, the measured height of the vertical pole should be accurate to ensure the leveling accuracy. During the leveling process, the laser leveling machine should be integrated with the paving machine to maintain good rigidity and avoid excessive vibration affecting the construction quality. Operators of laser leveling machines need to undergo professional training and be familiar with the performance and operating procedures of the equipment. Spreading of wear-resistant bone materials: Wear-resistant bone materials should be spread evenly in batches, and after each spreading, they should be compacted and polished with a trowel to ensure wear resistance and flatness. Finishing and maintenance: The finishing operation should be polished multiple times according to the hardening of the concrete to ensure that the floor is smooth and flawless. The floor should be kept moist during maintenance, and a maintenance blanket, non-woven fabric or film should be used to cover and moisturize the floor to prevent the concrete from drying out too quickly and causing cracking. ③ Precautions after construction Cutting and expansion joint treatment: After the construction of the laser-leveled concrete wear-resistant floor is completed, the expansion joint should be cut in time to prevent the concrete from cracking due to expansion and contraction. Professional personnel should be assigned to the cutting operation to ensure that the cutting depth and spacing meet the design requirements. Finished product protection: Guardrails and warning signs should be set up for the completed floor area to prevent people from stepping on and contaminating. Use maintenance blankets, non-woven fabrics or films to cover and protect the floor from external damage. Quality inspection and acceptance: After the construction is completed, the floor should be inspected for quality, including flatness, levelness, density, strength and other indicators. It can only be delivered for use after acceptance to ensure that the floor meets the design requirements and usage functions.