Diagnosis and Solution of Abnormal Walking System of Concrete Laser Leveling Machine

The construction quality control and management of concrete laser leveling mainly involves the following aspects: 1. Equipment selection and calibration First of all, choosing a qualified concrete laser leveler is the basis for ensuring construction quality. It is necessary to ensure that the selected equipment can meet various requirements of construction, including accuracy, stability, durability, etc. After the equipment arrives at the construction site, it must be carefully unpacked and inspected to ensure that all parts are intact, and preliminary debugging and calibration must be carried out in accordance with the instructions. 2. Operator training Operating a concrete laser leveling requires professional skills and experience, so operators must be rigorously trained. The training content includes the basic principles of equipment, operating procedures, safety precautions, fault diagnosis and troubleshooting, etc. Only operators who have been trained and obtained certificates can perform actual operations. 3. Construction process quality control Pre-construction quality control: This includes inspection of the construction environment to ensure it is dry, ventilated and dust-free. At the same time, concrete raw materials must be strictly controlled to ensure that their quality meets construction requirements. Quality control during construction: This is mainly to control the operation process of the concrete laser leveling machine. Operators are required to strictly abide by operating procedures and carry out construction according to preset parameters. At the same time, a dedicated person must supervise the construction process to ensure correct operation. Post-construction quality control: After the construction is completed, the concrete surface should be inspected for quality, including surface flatness, smoothness, etc. Any areas that do not meet the requirements must be dealt with promptly and leveled again. 4. Acceptance standards Acceptance standards are an important basis for measuring construction quality. For concrete laser leveling machine construction, the acceptance criteria mainly include the following aspects: Concrete surface flatness: This is the most basic acceptance standard, which requires that the concrete surface has no obvious undulations and the overall flatness meets the design requirements. Concrete surface finish: Good finish can reduce friction on the concrete surface and improve performance. The concrete surface is required to be smooth and flawless during acceptance. Construction accuracy: For high-precision construction projects, the accuracy of the concrete laser leveler must meet the design requirements. During acceptance, the construction accuracy should be measured to see whether it meets the design standards. Equipment stability: The stability of the equipment must be checked during acceptance, including the operation stability and working status stability of the equipment. Equipment reliability: During acceptance, the reliability of the equipment should be checked to see whether the equipment is prone to failure and whether each component of the equipment can operate stably. Economy: Th e economy of using the concrete laser leveling is also an important acceptance criterion. Economical use mainly refers to whether the energy, material and other costs consumed by the equipment during the construction process are reasonable. During acceptance, the economics of the equipment should be evaluated to see whether it meets the requirements of economic benefits. Safety: During acceptance, the safety of the equipment must also be checked, including whether the safety protection measures of the equipment are complete and whether the operators have safety awareness. In addition, it should be ensured that the noise and vibration of the equipment are within an acceptable range and will not affect the surrounding environment and personnel. Environmental protection: The environmental performance of the equipment must also be considered during acceptance. Concrete laser levelings may produce pollution such as dust and noise during the construction process. Therefore, it is necessary to ensure that environmental factors are considered during the design process of the equipment to minimize environmental pollution. 5. Quality inspection and maintenance During and after the construction process, the concrete laser leveling machine should be regularly inspected and maintained for quality. Quality inspection mainly includes inspection of the equipment's operating status, working accuracy, concrete quality, etc. Maintenance mainly includes daily maintenance, regular inspection and repair of the equipment. 6. Recording and archiving During the construction process, various construction parameters, operating procedures, problems and solutions should be recorded. These records can provide a basis for acceptance and quality inspection, and are also an important reference for equipment maintenance and improvement. Records should be organized into files and properly preserved for subsequent review and reference. In summary, the construction quality control and management of concrete laser leveling machines need to be comprehensively considered and implemented from multiple aspects such as equipment selection, personnel training, construction process control, acceptance standard formulation, quality inspection and maintenance, and record archiving. Only in this way can the construction quality of the concrete laser leveling be ensured and the overall quality and efficiency of the project improved.

    To ensure effective control of concrete mix ratio during construction, it is necessary to start from the whole process of raw material management, mix design, mixing production, construction pouring and quality inspection, and achieve the goal through standardized operation and refined management. The following are specific measures:   Cement: Check the brand, strength grade, stability, setting time and other indicators, send for inspection by batch, and strictly prohibit the use of expired or damp cement. Aggregate (sand, stone): Focus on controlling grading, mud content, mud block content, and needle-like particle content. For example, the mud content of fine aggregate (sand) must be ≤3% (C30-C55 concrete), and the needle-like particle content of coarse aggregate (crushed stone) must be ≤15%. Admixture: Check the type (such as water reducer, retarder), dosage adaptability, and provide a factory inspection report and retest qualification certificate to avoid the impact of admixture quality fluctuations on mix performance. Mixing water: Use drinking water or non-drinking water that has passed the test to ensure that there is no pollution such as oil, acidic and alkaline substances. – Aggregates of different specifications are stored in separate warehouses and obvious signs are set up to avoid mixing; sand and stone yards need to be hardened and drainage facilities are set up to prevent rainwater from eroding and causing grading changes. – Cement and admixtures need to be stored in warehouses, moisture-proof and rain-proof, and used according to the "first in, first out" principle to avoid long-term storage and failure.   – The professional laboratory will design the mix ratio according to the project requirements (such as strength grade, impermeability, durability), raw material characteristics and construction conditions (such as pumping height, pouring temperature). – At least 3 groups of trial mixes are carried out to adjust parameters such as water-cement ratio and sand ratio to ensure that the workability (slump, cohesion), setting time and strength of the concrete mixture meet the standards. – The mix ratio must be approved by the project technical person in charge and the supervision unit before use. – Before construction, conduct technical briefings to the mixing station and construction team to clarify key parameters such as the amount of each material, mixing time, and slump control range.   – The mixing station metering system (such as electronic scales) needs to be calibrated regularly (at least once a month), and zero-point calibration is performed before opening to ensure that the measurement error meets the standard: – Cement, admixture: ±1%; – Aggregate: ±2%; – Water: ±1%. Feeding sequence: Usually the "secondary feeding method" is used (first feed aggregate, cement, and mineral admixtures, dry mix for 30 seconds, then add water and admixtures, and then mix for 90-120 seconds) to improve the homogeneity of concrete. Mixing time: Controlled according to the mixer type, the forced mixer should be no less than 60 seconds to ensure that all materials are mixed evenly. Real-time monitoring of slump: At least 2 tests per shift. If the slump does not meet the requirements (such as the design requirement of 180±20mm), the water consumption or admixture dosage needs to be adjusted. It is strictly forbidden to add water at will.   – Use a mixer truck for transportation. The transportation time should not exceed 1 hour (shortened in summer) to prevent excessive initial setting or slump loss of concrete. – Keep the tank body rotating at a low speed (2-4 rpm) during transportation to avoid segregation; rotate at a high speed for 20-30 seconds before unloading to make the mixture uniform. – Check the concrete strength grade, impermeability grade and other labels. It is strictly forbidden to mix concrete with different mix ratios. – Test the slump again. If the slump does not meet the standard due to long transportation time, the water reducer of the original mix ratio can be added for adjustment (the dosage needs to be determined by test). It is strictly forbidden to add water directly. – When casting in layers, the thickness of each layer shall not exceed 500mm (pumping concrete), and the vibration time shall be controlled within 20-30 seconds to avoid segregation or honeycomb surface caused by over-vibration or missed vibration. – Avoid casting at noon in high temperature season (temperature>30℃), and take insulation measures in low temperature season (temperature<5℃) to prevent the performance of concrete from being affected by temperature.   – For every 100 trays (not exceeding 100m³) of concrete with the same mix ratio, make at least one set of standard curing specimens (cubes with a side length of 150mm) to test the 28-day strength; at the same time, make specimens under the same conditions to evaluate the demolding or tensioning strength. – For concrete with anti-seepage requirements, make one group of anti-seepage test pieces (6 pieces/group) for every 500m³. – Establish a statistical analysis account for concrete strength, compare the design value with the measured value, and if the standard deviation of strength for three consecutive groups exceeds the allowable value of the specification, the mix ratio needs to be re-optimized. – Adjust the construction mix ratio in time according to the fluctuation of raw materials (such as changes in sand moisture content). For example, for every 1% increase in sand moisture content, it is necessary to reduce the amount of water and increase the amount of sand accordingly to keep the water-cement ratio unchanged.   – Provide professional training for mixing station operators and construction teams to master the key points of mix ratio control, equipment operating procedures and emergency treatment measures (such as slump abnormality adjustment methods). – Regularly organize technical briefing meetings to convey specification updates or design change requirements. – Establish a "three-inspection system" (self-inspection, mutual inspection, and special inspection), clarify the person responsible for each process (such as the station manager, tester, and construction team leader), and sign and confirm the implementation of the mix ratio. – Accountability for illegal operations (such as adding water without authorization and not feeding materials according to the metering) is included in performance appraisal.   – Introduce an intelligent mixing station management system to monitor metering data, mixing time, slump and other parameters in real time, and automatically alarm and lock the equipment when abnormal. – Use BIM technology to simulate the concrete pouring process, optimize the construction sequence, and reduce the risk of mix ratio failure caused by process problems. Through the above measures, the full-cycle closed-loop management of concrete mix ratio from "design-production-construction-testing" can be achieved to ensure that the concrete performance meets the design requirements and ensure the safety and durability of the engineering structure.     Click the below to jump immediately!!! ARMOUR JOINT LASER LEVELING MACHINE LIGHT TOWER POWER TROWEL SLIPFORM MACHINE STEEL FIBER TOPPING SPREADER TRACKED MINI DUMPER  

1, before starting, should check the motor, cable is normal, protective grounding, protective devices, saw blade is in line with the requirements, the installation is correct. 2, after the start, the first no-load operation, check the direction of running saw blade, lift is flexible, the operation is abnormal, all normal, before operation. 3, the cutting thickness should not exceed the machinery factory regulations. 4, to prevent the card saw blade, rope saw and so on. 5, concrete cutting operations, there are abnormal sound, should immediately stop checking, troubleshooting, before they can continue to operate. 6, the size of the cut concrete block should be strictly calculated. 7, after work, should clean the fuselage, wipe the saw blade rope saw, drain the water tank to recover the cable, and stored in a dry, ventilated place.