Where should I start buying a laser leveling machine?

Large-area high-precision concrete floor laser leveling construction method 1. Laser leveling machine The laser leveler is a high-precision concrete construction equipment that uses laser technology and automated control technology to achieve rapid and accurate leveling of large-area floors. Its main features include 1. High precision: The laser leveling machine adopts a high-precision laser sensing convergence controller, which can monitor and adjust the flatness and height of the concrete surface in real time to ensure construction quality. 2. Automated control: The laser leveling machine can realize continuous automatic leveling operations, improving work efficiency. At the same time, automated control also reduces the impact of human factors on construction quality. 3. Large-area construction: The laser leveling machine has a large construction range and can complete the leveling work of a large area of ​​floors at one time, improving construction efficiency. 4. Vibration function: The laser leveler has a vibration function, which can evenly compact the concrete material to the required thickness, further improving the flatness. 2. Concrete materials When carrying out laser leveling construction of large-area high-precision concrete floors, high-quality concrete materials should be selected to ensure construction quality. The specific requirements are as follows: 1. Strength: Concrete materials should have sufficient strength to meet design requirements. 2. Durability: Concrete materials should have good durability and be able to withstand long-term use and the impact of various environmental factors. 3. Homogeneity: Concrete materials should have good homogeneity to ensure the smoothness of the floor surface after leveling 4. Slump: The slump of concrete materials should be moderate to ensure operability during construction. 3. Construction technology The large-area high-precision concrete floor laser leveling construction process mainly includes the following steps: 1. Preparation: Clean the construction site to ensure there is no debris and dust. Check whether the functions of the laser leveler are normal and prepare the concrete materials required for construction. 2. Spread concrete: Spread the concrete material evenly on the floor to ensure consistent thickness. Paving can be done using tools such as a scraper or trowel. 3. Laser leveling: Start the laser leveling machine and adjust various parameters according to construction requirements, such as flatness, height, etc. The laser leveling machine automatically completes the leveling work of the floor. 4. Compaction and trimming: On the basis of laser leveling, compaction is performed mechanically or manually, and local uneven areas are trimmed. 5. Surface treatment: Perform lightening treatment on the floor surface to improve flatness and smoothness. When finishing, be careful not to over-sand to avoid damaging the surface structure. 6. Curing and maintenance: After completion of construction, the floor should be properly maintained to ensure the hardening and strength growth of the concrete material. At the same time, the floor should be maintained and maintained regularly to ensure its long-term use. 4. Construction personnel Laser leveling construction of large-area high-precision concrete floors requires professional construction personnel to operate laser leveling machines and other related equipment. Construction personnel should meet the following conditions: 1. Professional training: Construction personnel should undergo professional training, be familiar with the operation and maintenance of laser leveling machines, and master the construction technology and technical requirements. 2. Technical level: Construction personnel should have a certain technical level and be able to adjust construction parameters and solve problems encountered during construction according to actual conditions. 3. Responsibility: Construction personnel should have a high sense of responsibility and professional ethics, be able to conscientiously perform construction duties and ensure construction quality 5. Construction Management Laser leveling construction of large-area high-precision concrete floors requires strengthening construction management to ensure that construction quality, progress and safety requirements are met. Specific management measures are as follows: 1. Formulate a construction plan: Based on the actual conditions and requirements of the project, formulate a reasonable construction plan, including construction progress, personnel arrangements, and technical requirements. 2. Construction quality control: Establish a complete construction quality management system and conduct strict quality control and acceptance of each process to ensure that the construction quality meets the design requirements.

  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.  

☆♦☆ Introduction ☆♦☆ With the continuous development and advancement of floor construction technology, concrete laser levelings have gradually become an important equipment for floor construction. Its high-precision and high-efficiency characteristics significantly improve the quality of floor construction. This article will start from the principles and advantages of the concrete laser leveling machine, and discuss its application and construction technology in floor construction, aiming to provide a useful reference for actual construction. ☆♦☆ Principles and advantages of concrete laser leveling ☆♦☆ 1. Principle The concrete laser leveling machine adopts laser ranging technology and automatic control technology. It emits a laser beam through a laser transmitter and is received by the receiver after being reflected by the reflector. According to the propagation path and time difference of the laser beam, the computer can accurately calculate the height information of each point, and control the lifting and movement of the leveling machine through the control system, thereby achieving high-precision leveling of the ground. 2. Advantages (1) High precision: Laser leveling machines can achieve millimeter-level precision, greatly improving the flatness of the floor. (2) High efficiency: Compared with traditional manual leveling, laser leveling machines can complete large-area leveling work in a shorter time, significantly improving construction efficiency. (3) Reduce labor intensity: The use of laser leveling machines greatly reduces the tediousness of manual operations and reduces the labor intensity of construction personnel. (4) Improve construction quality: The laser leveling machine can accurately control the thickness and flatness of concrete laying, significantly improving the construction quality of the floor. ☆♦☆ Application of concrete laser leveling machine in floor construction ☆♦☆ 1. Construction preparation Before construction, the construction area needs to be cleaned to ensure that the ground is clean and free of debris. At the same time, laser transmitters and receivers need to be set up to ensure that the propagation path of the laser beam is unobstructed. In addition, the laser leveling machine also needs to be inspected and debugged to ensure that it is in good working condition. 2. Concrete pouring. After preparing the construction area, start pouring concrete. During the pouring process, attention needs to be paid to controlling the pouring speed and thickness of the concrete to ensure that the concrete can be laid evenly on the ground. At the same time, it is also necessary to use a vibrator to vibrate the concrete to eliminate air bubbles and air films in the concrete. 3. Laser leveling Before the initial setting of concrete, use a laser leveling machine for leveling. During the leveling process, the laser leveling machine automatically adjusts its lifting and movement based on the height information of the laser beam to achieve high-precision leveling of the ground. During the leveling process, attention needs to be paid to controlling the speed and height of the leveling machine to ensure the best leveling effect. 4. Maintenance and surface treatment After leveling is completed, the floor needs to be cured to ensure that the concrete can be fully hardened and cured. During the maintenance period, it is necessary to keep the floor moist to prevent problems such as cracking of the floor. At the same time, surface treatment of the floor, such as grinding and polishing, is also required to improve the gloss and beauty of the floor. ☆♦☆ Construction process precautions ☆♦☆ 1. Ensure equipment accuracy: Before construction, the laser leveler needs to be accurately calibrated to ensure that it can accurately measure and level the ground. At the same time, during use, the equipment needs to be maintained and maintained regularly to ensure that it is in good working condition. 2. Control the quality of concrete: The quality of concrete is directly related to the construction quality and service life of the floor. Therefore, during the construction process, it is necessary to strictly control the quality of the mix, such as the type and amount of cement, the particle size and mud content of the aggregate, etc. 3. Pay attention to the construction environment: The construction environment also has a certain impact on the quality of floor construction. For example, environmental factors such as temperature and humidity can affect the hardening speed and degree of curing of concrete. Therefore, during the construction process, it is necessary to pay attention to changes in the construction environment and take corresponding measures to adjust. 4. Strengthen construction management Floor construction is a complex project, and construction management needs to be strengthened to ensure the smooth progress of the construction process. During the construction process, it is necessary to clarify the responsibilities and tasks of construction personnel, strengthen the monitoring and management of the construction site, and promptly discover and deal with problems that arise during construction. ☆♦☆ Summary and Outlook ☆♦☆ The application of concrete laser leveling machines in floor construction has greatly improved the accuracy and efficiency of floor construction, reduced the labor intensity of construction personnel, and improved construction quality. With the continuous advancement of science and technology and the continuous development of construction technology, it is believed that laser leveling machines will play a greater role in floor construction in the future.