Summarization and Application of Reinforced Concrete Cutting Technology

    – Before construction, plan the order of concrete pouring and leveling according to factors such as the size, shape and entrance and exit locations of the site. For example, for a large rectangular floor, you can adopt a construction sequence that gradually advances from one end to the other, or use block construction, skip-bin construction and other methods. This can avoid confusion and cross-operation during the construction process and improve construction efficiency. – At the same time, it is necessary to coordinate the links of concrete supply, distribution and leveling. Ensure that concrete can be supplied continuously and the distribution speed matches the working speed of the leveling machine. For example, when the concrete supply is sufficient, arrange a suitable number of distribution equipment (such as concrete distributor or loader) in front of each laser leveling machine so that the distribution can keep up with the progress of the leveling machine in time and reduce the waiting time of the leveling machine.   – Strengthen communication and collaboration between construction teams. Operators, quality inspectors and concrete suppliers should maintain close contact and communicate construction progress and problems in a timely manner through communication tools such as walkie-talkies. For example, when there is a short delay in the supply of concrete, the leveling machine operator can adjust the working speed in advance or pause at a suitable position, waiting for the concrete supply to resume before continuing the construction quickly. – Make overall arrangements for construction equipment. In the process of concrete pouring and leveling, a variety of equipment is involved, such as concrete mixers, concrete spreaders, laser levelers, etc. Reasonable arrangement of the entry and exit time of these equipment, as well as the conversion and coordination between equipment, can effectively reduce the idle time of equipment and improve the overall utilization rate of equipment. For example, when a laser leveling machine completes the leveling work of an area, another concrete spreader can quickly enter the area to spread the next layer of concrete, achieving seamless connection.   – Choose a high-performance concrete laser leveling machine. Advanced leveling machines have higher working efficiency. For example, some large laser leveling machines have a leveling head width of up to 3-5 meters and a working speed of up to 20-30 square meters per minute. Compared with traditional small equipment, they can complete large-area leveling work in a short time. – Regularly maintain and service the leveler to ensure that the equipment is in the best working condition. Check and replace worn parts such as scrapers, vibrators, etc. to ensure the working accuracy and stability of the equipment. For example, regularly clean the laser receiver and transmitter of the leveler so that it can accurately receive and transmit laser signals to improve the accuracy and speed of leveling.   – Provide professional training for leveler operators to improve their operating proficiency and skill level. Operators should be familiar with the various functions and operating methods of the leveler and be able to quickly adjust the working parameters of the equipment according to different construction conditions (such as concrete slump, site slope, etc.). For example, skilled operators can accurately control the scraper height and vibration frequency of the leveler according to the changes in the laser signal, while ensuring the construction quality and improving work efficiency. – Cultivate the safety awareness and emergency handling capabilities of operators. During the construction process, they can promptly discover and handle equipment failures, safety hazards and other problems to avoid construction delays caused by these problems. For example, when a leveler has a minor fault, the operator can quickly determine the cause of the fault and perform simple repairs or take temporary measures to restore the equipment to normal operation as soon as possible.   – Use a high-precision laser control system to achieve automatic leveling. The laser transmitter emits a stable laser plane, and the laser receiver of the leveler can receive the laser signal in real time and transmit the signal to the control system. The control system automatically adjusts the working parts of the leveler to make the leveling work more accurate and efficient. Compared with the traditional manual leveling method, it greatly saves time and manpower. – Combined with laser scanning technology, the site can be quickly scanned before construction to obtain the terrain data of the site. Based on these data, the construction plan can be planned in advance, such as determining the thickness of the concrete and the working route of the leveler, so as to improve the construction efficiency. For example, in the construction of sites with complex terrain, the terrain data obtained by laser scanning can enable the construction team to make targeted construction preparations and avoid repeated adjustments during the construction process.   – Use auxiliary equipment such as concrete spreading machines to improve the efficiency and uniformity of concrete spreading. The spreading machine can quickly and evenly distribute concrete in the site, providing good working conditions for the laser leveling machine. Compared with the traditional manual spreading method, it is not only faster, but also can ensure the consistency of the thickness of the spreading material, and reduce the adjustment time of the leveling machine during the work process. – Equipped with an intelligent monitoring system to monitor the construction process in real time. Through the sensors and cameras installed on the equipment, the monitoring system can obtain information such as construction progress, equipment status, construction quality, etc., and transmit this information to the control center or the manager's mobile device. In this way, managers can find problems in time and make adjustments to ensure efficient construction.

    Regular inspection and maintenance of consumables of concrete laser leveling machine is the corePrevent wear and failure of key componentsTo avoid sudden failures during construction that affect flatness and efficiency, it is necessary to execute the work in order of priority based on "wearing parts – precision parts – auxiliary systems". For core consumables that are in direct contact with concrete and wear the fastest, focus on checking the "amount of wear" and "tightening status". Consumables Category Check content Maintenance Action Judgment criteria Leveling scraper/blade 1. Check whether the cutting edge has any notches or curling 1. Use a scraper to clean the remaining concrete to avoid corrosion 1. If the blade wear is greater than 3mm, it needs to be polished; if the chip is greater than 5mm, it needs to be replaced. 2. Whether the surface concrete residue is hardened 2. If the bolts are loose, tighten them with a torque wrench according to the standard torque. 2. The bolts have no thread slippage and no obvious displacement 3. Are the fixing bolts loose? Laser receiver 1. Check if there is dust or concrete slurry attached to the lens 1. Use a clean soft cloth to wipe the lens. Do not use high-pressure water to directly clean the lens. 1. The lens is free of scratches and obstructions 2. Check whether the connecting wire is damaged or the connector is loose. 2. Damaged cables must be replaced immediately to avoid signal interruption 2. The indicator light flashes normally when receiving laser signal Travel wheels/tracks 1. Is the tire pressure normal (pneumatic tire) 1. Fill the tire pressure according to the instructions (usually 0.8-1.2bar) 1. Track teeth wear > 1/3 and need to be replaced 2. Check whether the track shoe has cracks or tooth wear 2. Add lithium-based grease when the bearing makes abnormal noise 2. No deviation or lag when walking 3. Is there any abnormal noise from the wheel bearing? For the transmission, hydraulic, and lubrication system consumables that support the operation of the equipment, focus on checking the "oil status" and "component aging." Hydraulic oil filter: Observe whether there are metal debris and impurities on the surface of the filter element. If the filter element is blocked and the indicator light is on, it needs to be replaced immediately (to avoid impurities from wearing the hydraulic pump). Hydraulic oil pipe/seal ring:  Check whether the oil pipe has bulges or leakage, and whether the sealing ring is deformed or aged. If leakage is found, the corresponding parts should be replaced in time to prevent hydraulic oil loss and insufficient power. Travel motor bearings, scraper drive shaftFor rotating parts, add the specified type of grease (usually 2# lithium-based grease) according to the instructions. The amount of grease added each time should be based on a small amount that overflows from the gap to avoid overheating of the parts due to excessive grease. If it is an electric model, check whether the battery terminals are oxidized or loose. Sand the oxide layer with sandpaper and apply Vaseline to prevent rust. When the battery power is less than 20%, it needs to be charged in time to avoid deep discharge that affects the battery life. For consumables that have a long lifespan but need to be replaced regularly, focus on "performance degradation". Laser transmitter: Check whether the brightness of the laser tube is attenuated (compare with the light spot intensity of a new machine). If the light spot is blurred or the range is shortened, the laser tube needs to be replaced (it is recommended to use original accessories to avoid model mismatch affecting accuracy). Filter elements (air/fuel): The fuel filter and air filter need to be replaced as a whole to avoid blockage after long-term use, which may lead to insufficient engine fuel supply and poor air intake. After replacement, start the machine and run it at idle speed for 5 minutes to check for leaks. Wear parts backup: Reserve 1-2 sets of wearing parts (such as scraper blades, seals, and filter elements) in advance to avoid a shortage of spare parts in the event of a sudden failure, which would affect the construction progress. The core of the maintenance of consumables of concrete laser leveling machine is "High frequency to check wear, medium frequency to maintain operation, low frequency to replace aging parts". Records must be kept for each inspection (such as wear amount, replacement time), and the cycle and parameters specified in the equipment manual must be strictly followed to maximize the life of consumables and ensure construction accuracy.  

  Appropriately increase the number of trowel passes of the trowel machine, so that the blade squeezes and presses the concrete surface multiple times, which helps to further squeeze out the bubbles inside the concrete and make the concrete surface more compact and smooth. However, attention should be paid to the time interval between each trowel. It is not advisable to perform the next trowel before the concrete reaches a certain strength, so as not to damage the concrete structure. Generally speaking, it is more appropriate to perform 2-3 trowels after the initial setting of the concrete and before the final setting.   The pressure of the trowel machine on the concrete surface can be appropriately reduced. If the pressure of the trowel machine is too high, a harder "shell" will form on the concrete surface, which is not conducive to the discharge of bubbles, but may seal the bubbles inside the concrete. By adjusting the counterweight or hydraulic system of the trowel machine, the trowel machine can apply a more appropriate pressure to the concrete surface during operation, so that bubbles can escape the surface more easily. The specific pressure adjustment value needs to be tested and explored according to the state of the concrete and the situation of bubbles.   In the process of adjusting the operating parameters of the trowel machine, it is necessary to closely observe the changes on the concrete surface and make fine adjustments to the parameters in time according to the actual effect to achieve the best trowel effect and eliminate bubbles on the concrete surface. At the same time, it is also possible to combine measures such as optimizing the concrete mix ratio and improving the pouring process to fundamentally reduce the generation of bubbles on the concrete surface.