With the rapid development of the construction machinery industry, excavators are an important earthwork construction equipment, its work efficiency, and cost control have become the focus of the industry. Among them, the bucket tooth is the terminal part of the excavator working device and its performance directly affects the overall performance and production cost of the excavator. In the following, a number of recommendations will be made for the optimization strategy of bucket teeth, aiming to improve the efficiency of excavator operation and reduce maintenance costs. 1. Choose the appropriate bucket tooth type Bucket teeth in the use of the process to see the working environment, to determine the specific type of bucket teeth, general excavation, weaved sand, coal, and so on to use flat head bucket teeth. Excavating block hard rock with RC bucket teeth, excavating block coal generally with TL bucket teeth, TL bucket teeth can improve the coal block rate. In actual use, users often like general RC bucket teeth, it is recommended not to use RC bucket teeth in special cases, and it is better to use flat-head bucket teeth, because RC bucket teeth are worn for a period of time before, like "fist" to increase the mining resistance and waste power and the flat mouth bucket teeth always maintain a sharp surface in the wear process, reduce the mining resistance, and save fuel. 2. Replace the bucket teeth in time When the top part of the bucket tooth is worn seriously, the strength required by the excavator in the excavation operation will be greatly increased, resulting in greater fuel consumption and affecting work efficiency. Therefore, it is necessary to replace the new bucket teeth in time when the bucket teeth loss is more serious. 3. Replace the tooth base in time The wear condition of the tooth seat is also very important to the service life of the excavator bucket teeth. After the tooth seat is worn out by 10%-15%, it is recommended to replace the tooth seat, because there is a large gap between the tooth seat and the bucket teeth with excessive wear, so that the bucket teeth and the tooth seat are matched the force point has changed, and the bucket teeth are broken because of the change of the force point. 4. Daily check fastening In the daily maintenance of the excavator, spend 2 minutes a day checking the bucket. The main inspection content is: the bucket body is the degree of wear and whether there are cracks, if the degree of wear is serious, it should be considered for reinforcement. If the bucket body has cracks, it should be welded in time to avoid the delay of maintenance and increase the length of the crack, resulting in a situation that cannot be maintained. In addition to kicking the teeth of the digging bucket with the foot, check whether the ruler is stable if the teeth are loose, it should be immediately fastened. 5. Replace the position after wear Practice has proved that in the process of using the excavator bucket teeth, the bucket teeth outside the bucket is 30% faster than the inside of the bucket teeth. It is suggested that after a period of time, the bucket teeth should be inverted inside and out. 6. Pay attention to driving methods The driving method of the excavator, the driver is also very key to improving the utilization rate of the bucket teeth. The driver of the excavator should try not to collect the bucket when lifting the arm. If the driver lifts the arm while collecting the bucket, the operation will make the bucket teeth receive an upward traction force, so that the bucket teeth are torn from the top of the bucket, so as to tear the bucket teeth. Some excavator drivers often push too hard in the action of amplifying the arm sending the forearm, and "knocking" the bucket quickly to the rock or force the bucket to fall on the rock, which will break the bucket teeth, or easy to crack the bucket, and break the big arm. The excavator driver should pay attention to the Angle operation of excavation during the operation. The bucket teeth should be perpendicular to the working face when digging down, or the inclination Angle is not greater than 120 degrees, to avoid breaking the bucket teeth due to excessive inclination Angle. Also, pay attention not to swing the digging arm around in the case of large resistance, which will make the bucket teeth and tooth seat break due to excessive force on the left and right, because the mechanical design principle of most types of bucket teeth do not consider the left and right force design.

Recently, in view of the slow working speed of excavators, technical experts pointed out after in-depth study that the main reason is the decline in engine power and the internal leakage of the hydraulic system caused by the wear of each part of the whole machine. Experts said that the excavator, as a heavy construction machinery, its hydraulic pump as the core component, will inevitably produce wear after a long time of work.   It is understood that the hydraulic pump of the excavator usually uses the plunger variable pump. With the increase of working time, the hydraulic components inside the pump such as the cylinder block, the plunger, and the flow plate will appear excessive wear, which will cause the internal leakage phenomenon. This not only leads to the uncoordinated parameters of the hydraulic system, but also causes the problems of insufficient flow and too high oil temperature, which is finally manifested as the slow working speed of the excavator.   For this kind of problem, experts suggest that when the working speed of the excavator slows down, it is first necessary to check whether the circuit fuse is open or short circuit to ensure that the circuit system is normal. At the same time, checking whether the pilot pressure is normal, and whether the servo control valve and servo piston are stuck is also an important step in troubleshooting.   If the above inspection fails to solve the problem, then the hydraulic pump may need to be disassembled and data measured to confirm the fault. After confirming the problem, it is necessary to repair or replace the parts that have exceeded the wear limit to restore the normal working condition of the excavator.   Experts remind that the daily maintenance and maintenance of excavators is crucial to extend their service life and maintain work efficiency. Users should regularly inspect and maintain the excavator to avoid big failures caused by small problems.

In the field of engineering machinery, excavator is an important earthwork construction equipment, the stability of its working performance is directly related to the construction efficiency and safety. Recently, industry experts have conducted an in-depth study on the common "excavation weakness" fault of excavators and put forward corresponding solutions. For excavation weakness can be divided into two cases: one is excavation weakness, the engine does not hold in the car, feel the load is very light; The second is the excavation of weakness, when the boom or bucket rod to the end, the engine is seriously suffocated, or even flared out.   1．The excavation is weak but the engine does not hold the car. The excavating force is determined by the output pressure of the main pump, and whether the engine holds up depends on the relationship between the absorbed torque of the oil pump and the output torque of the engine. The engine does not hold up the car indicates that the oil pump absorbs less torque and the engine load is light. If there is no obvious abnormality in the working speed of the excavator, the *5655 output pressure of the main pump should be focused on, that is, the overflow pressure of the system. If the overflow pressure measurement value is lower than the specified value, it indicates that the overload overflow valve set value of the hydraulic circuit of the mechanism is not correct, resulting in premature overflow of the mechanism and weak work. The machine can be adjusted by turning the adjustment screw. 2．excavation weakness, engine holding. The engine holding up indicates that the absorbed torque of the oil pump is greater than the output torque of the engine, resulting in overloading of the engine. This fault should first be checked if the engine speed sensing system is normal, and the inspection method is similar to the engine inspection method described in the previous section. After the above detailed inspection and troubleshooting, the engine speed sensing system returns to normal function, the engine holding phenomenon disappears, and the excavation force will return to normal.

The excavator cannot be started, which can be called difficult start, non-combustible, etc. It is one of the most common faults of excavators. It can be divided into two cases. 10 reasons why the excavator won't start: 1. The battery clamp is loose, which makes it difficult for the excavator to start. 2. Excavation of the electric battery is insufficient, or the battery head is loose, resulting in poor contact. 3. Circuit failure, loose relay box connector, or fuse in fuse box. 4. The starter motor or generator fails and cannot generate electricity normally, resulting in insufficient electricity. 5. The excavator cannot start in winter, which may be caused by waxing of the excavator diesel. 6. The excavator is matched with unsuitable fuel. In the winter, diesel with a large viscosity should be used, and in summer, a diesel with a low viscosity should be selected. 7. The engine cylinder pressure of the excavator is lacking and the engine valve is not tightly closed. 8. It is difficult to start the excavator hot car. There may be something wrong with the oil pump or nozzle of the excavator. 9. Malfunction caused by too much water in diesel or too much air mixed in diesel. 10. Failure of the excavator solenoid valve, wear of the diesel pump plunger, etc. will also cause startup failure.

Generally, the cost of construction machinery and equipment is very high, so we must maintain the construction machinery well and extend the life of the construction machinery. In addition to minimizing the impact of harmful factors, we should also ensure normal working loads when using construction machinery. 1. Ensure normal working load The size and nature of the working load of engineering machinery have an important impact on the wear process of the machinery. Generally speaking, the wear of parts increases proportionally with the increase of load.   When a part is subjected to a load higher than the average design load, its wear will increase. In addition, when other conditions are the same, the wear under stable load is smaller than that under dynamic load, with fewer failures and shorter service life. 2. Reduce various corrosion effects The phenomenon of damage caused by chemical or electrochemical interaction between the metal surface and the surrounding medium is called corrosion. This kind of corrosion will not only affect the normal operation of the mechanical appearance equipment, but also corrode the internal parts of the machinery. For example, rainwater, chemical substances in the air, etc. Enter the inside of the machine through the external channels and gaps of the mechanical parts, corrode the inside of the mechanical parts, accelerate mechanical wear, and increase mechanical failure. During use, managers and operators must take effective measures to reduce the impact of chemical corrosion on the machinery based on the local weather conditions and air pollution conditions at the time. The focus is to prevent the intrusion of rainwater and chemical components in the air into the machinery and minimize the impact of chemical corrosion on the machinery. 3. Reduce the impact of mechanical impurities Mechanical impurities generally refer to dust, soil and other non-metallic substances as well as some metal shavings and wear products generated by engineering machinery during use. Once these impurities enter the interior of the machine and reach between the mating surfaces of the machine, they are very harmful. Not only will they block relative motion and accelerate the wear of parts, but they will also scratch the mating surfaces, destroy the lubricating oil film, and increase the temperature of the parts. High, lubricating oil deteriorates. Therefore, for construction machinery working in places with harsh environments and complex conditions, first, we must use high-quality, supporting parts and lubricating oils and greases to block the sources of harmful impurities; second, we must do a good job in mechanical protection at the work site , to ensure that the corresponding mechanisms can work normally and prevent various impurities from entering the interior of the machinery. For malfunctioning machinery, try to go to a regular repair place for repair. During on-site repairs, protective measures must also be taken to prevent the parts replaced during on-site repairs from being contaminated by dust and other impurities before entering the machinery.

Summer is the season when extreme weather such as typhoons, heavy rains, and floods occur frequently. In the face of natural disasters such as extreme weather that may cause rivers to overflow, flash floods, and landslides, what response measures should excavator users take? Precautions for construction in rainy season 1. Before construction, pay attention to the surrounding environment and check whether the construction site is soft and has hidden dangers of vehicle trapping.  The general method is to use manpower to poke downwards with bamboo poles. If multiple bamboo poles are poked down quickly without any effort, and there is no resistance within 1 meter, it means that the area is full of silt. Ordinary excavators can easily get stuck and cannot perform normal construction. 2. Before construction in the rainy season in mountainous areas, first observe whether there is any possibility of landslides, collapses, or debris flows on the mountain.  First, observe whether the mountain is broken, whether there is unreasonable excavation, unreasonable spoil, slag, and quarrying, whether the vegetation grows well, and whether the mountain water is turbid. 3. During the construction process, if you feel that the excavator has begun to sink, stop the construction in time, find a support point and use the big arm to support the vehicle body to prevent further sinking. Drive the excavator back as quickly as possible and do not drive in other directions. 4. Always be vigilant when working in the rain.  When working at night, keep the front and rear headlights, work lights, ceiling lights, instrument lights, wipers, etc. of the excavator working normally to ensure safety. 5. After the construction is completed, the excavator must be parked in a safe area with higher terrain and closer to the residence Away from possible landslides, rising rivers and other dangerous areas, also ensure that the excavator has sufficient fuel to enable evacuation at any time.

Before Storage 1. Wash every part of the machine, dry it, and store it in a dry warehouse. If the vehicle can only be stored in the open, it should be parked on a concrete surface that drains easily and covered with canvas. 2. Before storage, fill the fuel tank with oil, add grease to each moving pin and transmission shaft, and replace the hydraulic oil. 3. Remove the battery from the machine and store it separately. 4. If the temperature is likely to drop below 0°C, add antifreeze to the engine and allow the antifreeze to reach the engine body and the evaporator of the air conditioning system. Or drain the water in the cooling system, and be sure to drain the water in the air conditioner as well. Use the frame fixing locking rod to secure the front and rear frames. In Storage 1. Start the machine once a month, run each system, and add grease to each moving pin and transmission shaft. This can lubricate each moving part and charge the battery at the same time. 2. Before starting the machine, wipe the grease off the hydraulic cylinder piston rod. 3. Apply anti-rust oil to areas prone to rust. After Storage 1. Change engine, transmission, transaxle lubricating oil, as well as hydraulic oil and antifreeze. 2. Add grease to all motion pins and transmission shafts.

Excessive engine water temperature is a common fault in excavators. Under normal engine operation, the water temperature is generally set between 82 and 95 °C.  Excessive water temperature will affect the normal performance of engine power and shorten the service life of the engine. In response to this common phenomenon, the editor today introduces several common causes of excessive water temperature. 1. The machine is in an overloaded state for a long time, especially in a high-temperature environment The high external temperature reduces the heat dissipation efficiency of the engine cooling system, and the engine continuously generates new heat, resulting in heat accumulation in the body. The water temperature is too high. 2. Long-term use of water with high hardness or impurities Calcium and magnesium ions or impurities in the water will precipitate at high temperature and adhere to the inner surface of the water tank and water pipeline, forming scale. Scale will hinder the water flow and even block the pipeline, which will affect the operating efficiency of the heat dissipation cycle, affect the heat dissipation, and reduce the efficiency of the heat dissipation system. 3. If the radiator is not cleaned for a long time, a lot of dust will adhere to the surface of the radiator, which will affect the heat loss of the radiator The radiator is the most direct heat dissipation device of the heat dissipation system. It is very important to ensure that the surface of the radiator is clean so that it can dissipate heat efficiently. 4. The thermostat is faulty The thermostat is the core component of the heat dissipation system that senses and adjusts the temperature. If the thermostat is damaged, the heat dissipation system will not be able to switch between large and small cycles according to the water temperature. When the water temperature rises, it will not be able to switch to the large cycle heat dissipation in time, resulting in excessive water temperature. 5. Insufficient water The water in the heat dissipation system is the transport carrier to bring the heat inside the engine to the radiator. Too little water directly affects the heat transfer efficiency. 6. The cooling fan blades are deformed and the belt is loose The excavator engine is installed in a relatively airtight engine room. If the cooling fan cannot discharge the heat from the radiator and the body out of the engine room in time, the heat will accumulate in the engine room and affect the cooling efficiency of the engine. 7. The water pump is damaged The water pump is the power source for the heat dissipation cycle operation. If the water pump is damaged, the efficiency of the heat dissipation cycle will be reduced or even stop running, resulting in an increase in water temperature and even damage to other components. It is worth noting that the high engine water temperature is sometimes not only caused by one or two of the above factors, but the result of a combination of various factors.  Therefore, we must learn to make comprehensive judgments. So how do you usually prevent the engine water temperature from overheating?  First of all, do not use water with high hardness or impurities when adding water. Try to avoid long-term overload operation in a high temperature environment, clean the radiator surface frequently, keep the cooling fins clean, and check the cooling fan and belt regularly. The engine is the heart of the excavator, and its working condition has a significant and direct impact on the working condition of the whole machine. Once the water temperature of the engine is overheated, the cause should be checked in time, and the faulty parts should be repaired or replaced in time to avoid damage to important components and cause heavy losses.

1. Wear personal protective equipment Always wear a hard hat and safety shoes. When operating or maintaining machine, wear safety glasses, face shield, gloves, earplugs, and seat belt if the job requires it.  Before use, check that all protective devices are functioning properly. Do not take chances, so as not to increase unnecessary danger. 2. Get on and off the machine correctly When getting on and off the machine, always face the machine and use the handrails and steps marked with arrows in the figure below.  Keep three points (two feet and one hand or two hands and one foot) in contact with handrails and steps (including track shoes) to ensure that you support yourself. 3. Start the machine safely Check the engine coolant level, fuel and oil levels before starting the engine. Check the air filter for clogging. Verify that the safety lock lever is in the locked position. 4. Make sure that no one is above, below, and around the machine, and honk the horn as a start-up warning. Start the engine strictly according to the operating instructions in the operation and maintenance manual to avoid machine damage or casualties caused by wrong operation.

We currently use the most industrial cleaners may still be in the production, may be a lot of people do not know some of our large-scale equipment also needs to be cleaned, because large-scale equipment operating time is too long, its surface will have a lot of dirt. If not cleaned in time, may affect the efficiency of the work, damage the service life of the machine. Therefore, the cleaning of industrial equipment is still very important, and still mainly to remove the oil. Currently the most common industrial cleaning is ultrasonic degreasing cleaning because it is more efficient compared to high temperature heated tank cleaning. It uses the principle of ultrasonic vibration to accelerate the shedding of oil, but also has a heating tank cleaning-heating function. Therefore, advanced ultrasonic cleaning is rapidly replacing the traditional heating tank cleaning. There are many industrial degreasing cleaning processes and many industrial cleaning agents, so we need to pay attention to the following 3 points in the selection of degreaser: 1. Choose the degreaser with high efficiency and strong decontamination Verify the reliability of the product, it is necessary to test or sampling 2. In addition to the quality of the product itself is excellent, for due service should also be concerned Many people will ignore this point. In fact, today, the choice of degreaser and services are almost equally important. Without reliable pre-sale, after-sale and technical services, once the problem occurs, it is easy to cause big losses. 3. It is also important to choose environmentally friendly and non-polluting products Currently, many companies are also the top priority of the national requirements, a series of policies are strictly around the green power.

Preventive maintenance is one of the best things you can do for your heavy equipment. Some of its benefits include reducing expenses, extending the life of your equipment, and ensuring that your company can always use more of it. Because heavy equipment maintenance can provide so much value, many savvy businesses prioritise it. 1. Extended Life When you perform routine maintenance on your construction equipment, you keep it in tip-top shape so that it can be used for a long time without breaking down or needing major repairs. Performing preventive maintenance can keep machines running longer than those that are not regularly serviced and maintained. Longer service life is a major benefit, as it maintains productivity in the workplace and avoids downtime for repairing or replacing faulty machines. 2. Increased Safety Generally speaking, well-maintained construction equipment is safer than neglected machinery. If equipment malfunctions at an unexpected time, a nearby worker or operator could be seriously injured. In addition, equipment failure can damage surrounding property and other materials or equipment. Routine maintenance helps you keep an eye on any potential hazards and repair problems before they become serious. 3. Reduced expenses Unexpectedly damaged or malfunctioning equipment can incur some unexpected costs. While you can't prevent every machine breakdown, you can reduce the chances of failure through preventive maintenance. Compound failures and other major breakdowns are more likely to happen unexpectedly if you don't maintain your equipment on a regular basis. With regular maintenance, you can save money because you won't have to pay for replacement parts or lose productivity while waiting for your equipment to be repaired. 4. Reduce the risk of lawsuits If you don't regularly maintain and repair your equipment, you face potential lawsuits. Unmaintained equipment can break down at the worst possible time, leading to accidents that injure employees or damage your building. Whether it's a lawsuit from an injured employee or a disgruntled customer, you want to avoid equipment negligence and its consequences. Having a regular maintenance schedule in place can prove that you've done your due diligence.

Engine power: 116/2000kW/rpm Overall weight: 21,900kg Bucket capacity: 1.05m³  More efficient and environmentally-friendly Equipped with powerful and reliable WEICHAI WP7 engine, SE220W hydraulic excavator has lower fuel consumption. Imported hydraulic parts contribute to stable quality and high efficiency. Chinese advanced intelligent electrical system and high-strength structural parts offer stronger adaptability to various working conditions. With built-in GPS, the intelligent information terminal improves the intelligent level of the whole machine. Enhanced configuration The bottom plate, side plate and reinforcing plate of the bucket are made of high-strength wear-resistant materials to improve the durability of the bucket. Boom, arm and bucket with multiple specifications can be easily combined to adapt to various working conditions. Drive sprockets, idlers, track rollers, carrier rollers, and tracks Decades of R&D and manufacturing experiences of drive sprockets, idlers, track rollers, carrier rollers, and tracks and world’s leading technologies. The world’s sophisticated forging and heat treatment processes guarantee stable and reliable quality. Spacious and comfortable operating environment The colors of the all-injection-molded interior trim parts are effectively matched according to ergonomics to mitigate the operator’s visual fatigue. The control devices are reasonably arranged to realize large space, broad vision, and convenient and comfortable operations. The high-power A/C, adjustable wrist rest and the air cushioned seat help create comfortable operations. Intelligent electronic control and optimal power control The intelligent control system realizes the optimum match between power system and the hydraulic system to increase the working efficiency and reduce the fuel consumption. Through the cloud platform, you can view the vehicle position, running track, working status and other relevant information at any time.