The Main Points of Small Roller in Subgrade Construction

Concrete laser levelings and pavers are two different mechanical equipment with different functions and application fields. Here are their main differences: ※Working principle The concrete laser leveling machine uses laser measurement technology to emit a laser beam through a laser transmitter. The laser receiver receives the reflected laser signal and calculates the distance and direction of the leveling machine's movement, thereby accurately controlling the leveling machine's traveling route and direction. height to achieve the purpose of leveling the concrete surface. A concrete paver is a mechanically or hydraulically driven mixing device that mixes the concrete evenly and then spreads the concrete onto the working surface through a conveyor belt or scraper. It relies on the mixing device and the conveying device to complete the concrete laying operation. ※Application fields Concrete laser leveling machines are mainly used for leveling operations in large-area concrete projects, such as highways, bridges, parking lots, etc. It has the advantages of high precision, high efficiency, automation, etc., and can complete the leveling work of a large number of concrete surfaces in a short time. Concrete pavers are mainly used for laying concrete projects. It can lay various concrete structures, such as floors, walls, floors, etc. ※Operation method Concrete laser levelings usually use automated control systems that can be operated via a computer or remote control. The operator only needs to set relevant parameters and routes, and the leveling machine can automatically perform leveling operations. Concrete pavers are relatively simple to operate. Operators need to master the operating skills of mechanical equipment and the process requirements of concrete mixing, and complete the concrete laying operation by controlling the mixing device and conveying device. ※Processing quality Due to the use of laser measurement technology, the concrete laser leveling machine can complete large-area leveling operations in a short time and can achieve high precision and flatness. It can control the flatness error of the concrete surface within a small range and improve the quality and service life of the concrete surface. The quality of concrete paver processing depends primarily on the skill and experience of the operator. If the operator has rich experience and high skill level, he can achieve better laying results. However, if the operator's technical level is not high or unskilled, it may lead to uneven or uneven laying, affecting the processing quality and service life. ※Processing efficiency The processing efficiency of concrete laser leveling machines is usually high. It can achieve automated control and high-precision measurement to complete the leveling operations of a large number of concrete surfaces in a short time. At the same time, due to the use of laser measurement technology, it can avoid errors and delays in traditional measurement methods. The processing efficiency of concrete pavers is relatively low. It requires operators to manually control the parameters and time of the mixing device and conveying device, thus requiring more time and manpower to complete large-area concrete projects. ※Maintenance and care Maintenance and maintenance of a concrete laser leveling is relatively simple. It requires regular inspection of the cleanliness and accuracy of the laser transmitter and receiver, as well as routine lubrication and maintenance of the machine. At the same time, regular cleaning and maintenance of the machine is also required to maintain the normal operation and service life of the machine. Concrete pavers are relatively complex to maintain and maintain. It requires regular inspection of the working status of the mixing device, conveying device and engine, as well as regular lubrication and maintenance of the machine. At the same time, the equipment also needs to be cleaned and maintained regularly to extend the service life of the machine. To sum up, although concrete laser levelings and pavers are used for the treatment and paving of concrete surfaces, their working principles, application fields, operating methods, processing quality, processing efficiency and maintenance are all different. Certain differences. When choosing to use it, you need to choose appropriate mechanical equipment according to the actual situation to meet the construction requirements.

    The commissioning and calibration of a concrete laser leveling machine is crucial for ensuring high-quality flooring (high flatness and levelness). This process requires meticulousness and patience. The following are key details to consider, divided into several key phases: Before beginning any commissioning, thorough preparation is the foundation for safety and success. Mechanical part: Check the leveler's structural parts, hydraulic cylinders, scrapers, and vibrators for damage, looseness, or oil leakage. Ensure that the tracks and tires are intact and free of damage. Hydraulic system: Check that the hydraulic oil level is within the standard range and that the oil is clean. After starting the engine, listen for any abnormal noises coming from the hydraulic pump and motor. Power system: Check whether the fuel, oil, and coolant are sufficient. Ensure that the battery is fully charged and the wiring connections are secure. Stability: Mount the laser transmitter on a solid, stable, vibration-free tripod. Avoid placing it on soft ground or in a location where it may be hit by people or equipment. Position and height: The installation position should cover the entire construction area and be as close to the center as possible to reduce the slight error caused by distance. The height should be raised so that the laser beam is higher than the working range of the receiver on the leveling machine. Leveling: This is the most critical step! Use the laser transmitter's built-in bubble or electronic level to accurately adjust it to a horizontal state (usually in 360° rotation scanning mode). Even a slight tilt will cause the entire working surface to have a slope error. Accuracy selection: Select the appropriate accuracy level according to the construction requirements (for example, ±10mm/@30m or ±3mm/@30m). The higher the accuracy, the higher the debugging requirements. Elevation benchmarks: Verify the on-site elevation benchmarks (usually provided by a surveyor) with the construction crew and double-check them at multiple locations using a handheld laser receiver. Base treatment: Ensure that the flatness and density of the base (usually crushed stone or compacted soil) basically meet the standards, without obvious bumps. This is the core link, the purpose of which is to enable the machine to accurately respond to laser signals. Securely mount the laser receiver on the mast of the leveling machine to prevent it from shaking. Check the receiver's battery level to ensure it is functioning properly. Verify that the indicator lights or display on the receiver are functioning properly. Drive the leveler to the area covered by the laser transmitter signal, preferably close to the transmitter and where the ground elevation is close to the design elevation. Manual mode: Operate the machine to raise or lower the scraper bottom until it is exactly at the designed elevation (which can be verified by measurement). Calibrating the Receiver: At this correct height, adjust the receiver up and down on the mast so that its center point (usually the green light or display "0") is aligned with the laser beam. Locking the reference: Execute "Set reference point", "Reset to zero" or similar operations on the control panel. The control system will remember this height as the "0" position of the laser signal (i.e. the designed elevation). Sensitivity: Sets the hydraulic system's response sensitivity. A setting that's too high will cause the scraper to frequently adjust up and down, creating a "chasing wave" phenomenon that affects smoothness. A setting that's too low will result in a sluggish response and poor accuracy. Usually, start with a mid-range value. Deadband: Set a small allowable error range (such as ±1-2mm). Within this range, the system will not operate to avoid excessive fine-tuning of the hydraulic system and improve construction fluency. After setting the benchmark, do not start pouring immediately. Instead, drive the machine forward, backward, left, and right within the signal range while observing the height display on the control panel. Observe whether the scraper can rise and fall smoothly and accurately according to the instructions. Stop the machine at different points with known elevations, use a ruler or level to actually measure the height of the scraper bottom, and compare it with the designed elevation to verify the height accuracy of the control system.   Commissioning and calibration are not a one-time thing and require continuous monitoring during construction. Every 1-2 hours, or when a collision is suspected, the laser transmitter must be rechecked to ensure it is still in an absolutely horizontal state. Vibrations, wind or accidental contact can cause it to deviate. Regularly use a ruler to spot-check the surface elevation of leveled but not initially set concrete, and cross-verify it with the machine display value. The slump (dryness or thinness) of concrete significantly impacts leveling results. If the material is too dry, the machine will experience significant resistance and may "climb a slope"; if the material is too thin, the machine will easily "get stuck." Maintaining consistent concrete supply quality is crucial. Plan the movement path of the leveler to ensure it is always within the effective coverage of the laser signal and avoid signal blind spots. Lost signal: Once the receiver alarm indicates that the laser signal is lost, construction should be stopped immediately, the cause should be found out (blocked, transmitter power off, out of range, etc.), and the signal should be restored and recalibrated before continuing. Accuracy deviation: If a systematic deviation (overall high or low) is found during spot checks, the machine should be stopped immediately and the laser transmitter level and the leveling machine's reference settings should be rechecked.   Personnel safety: When debugging and running the machine, make sure there is no one around, especially pay attention to the height of the laser beam to avoid direct exposure to human eyes. Equipment safety: When moving the leveler, be careful to avoid obstacles such as steel mesh and elevation piles to prevent damage to the tracks and hydraulic cylinders.   Stage Core details Purpose Prepare Laser transmitter is installed absolutely horizontally Establishing an accurate horizontal reference plane Check site elevation benchmarks Ensure consistency between design and site Calibration Benchmark the machine at a known correct elevation Let the machine "learn" what the design elevation is Trial operation and actual test verification Cross-check to ensure system accuracy Construction Regularly review laser leveling and machine accuracy Prevent errors caused by vibration and collision Monitor concrete material properties and signal status Ensure a stable and reliable construction process Only by following the above details, strictly following the equipment manual, and working closely with on-site surveyors can the technical advantages of the laser leveling machine be fully utilized to cast ultra-high-precision high-quality floors.    

If the concrete laser leveling machine works in the summer, it will need to face hot temperatures for a long time. However, if the leveling machine is always under high temperature, it will actually cause many adverse reactions. For example, the tires will be more likely to be damaged or The water in the water tank will evaporate at an accelerated rate, so in order to protect the concrete laser leveler, when you need to operate the leveler at high temperatures, you should take appropriate precautions in advance. How to take precautions when the concrete laser leveling machine works under high temperature conditions ●First, because the summer is hot and the temperature is continuous, so if the concrete laser leveling needs to work for a long time, it means that the vehicle tires are always exposed to high temperatures. At this time, you should pay attention to the tires caused by high temperatures. Rubber softening problem. Moreover, if you encounter sharp objects during the work, a tire blowout may occur. Therefore, this requires car owners to check the air pressure level in the tires in advance before the concrete laser leveling machine is working. If the tire temperature is found to be relatively high during the work, appropriate cooling measures need to be taken. There are two misunderstandings to avoid here. The two cooling measures of directly pouring cold water and deflating the air are very undesirable because they will cause damage to the tires and even cause a puncture later. ●Second, if the concrete laser leveling machine works under high temperature conditions for a long time, the water in the water tank will evaporate more quickly, so the owner should pay more attention to how much cooling water is left and what temperature the water temperature meter shows. , if you find that the water volume is not enough, you should stop the car immediately, but you cannot add water immediately at this time, but you should add water after the temperature has cooled down a little. When adding water, be careful to avoid burns. ●Third, ther e are two particularly dangerous time periods that require more vigilance, mainly at noon and dusk. After a morning of working with the concrete laser leveling, especially in summer when the temperature is high, people can easily become sleepy during the noon period, which can lead to fatigue driving and lack of concentration, so accidents often occur. It is also easier to get tired at dusk because of the hard work of the day. In this case, the car owner can drink something refreshing, or stop and rest, and then continue the work of the concrete laser leveling machine when his mental state is better.