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  • Eight tips to minimise the fuel consumption of mixer trucks

    ​ 1. It is found that the taxiing distance of the mixer truck is significantly reduced during driving. At this time, the drivers should check whether the tire pressure of the mixer truck meets the air pressure standard. If the tire is underinflated, fuel consumption will increase. Tip: Inflate the tires in a timely manner. 2. Check the abrasion degree of the mixer truck tires. If the tires are severely worn, slipping will often occur, increasing fuel consumption. Tip: Replace with new tires if necessary. 3. During the running or starting of the mixer truck, if abnormal sounds are found on the wheels, the bearings and braking system should be checked for faults in time. If the wheels are not rotating properly, it will affect the speed of the mixer truck and increase fuel consumption. Tip: Repair the bearing and brake system. 4. The slippage of the clutch of the mixer truck will cause the engine speed to be lost. When you find that the tachometer of the mixer truck engine increases quickly, but the speed of the mixer increases slowly, you can determine that the clutch…

    2020-03-31
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  • Senior asphalt engineer teaches you how to choose the right asphalt mixing plant

    About the asphalt mixing plant, the fuel consumption cost is the largest consumption. Therefore, the scientific and reasonable design of the entire equipment will directly affect the heat exchange efficiency of the asphalt mixing plant, thereby reducing the fuel consumption of the entire equipment. One of the most important items in fuel cost is the reasonable storage of materials and the design of the site. Reasonable stacking of the front end of the aggregate, rainproof treatment, and the rapid discharge of rainwater in the site will make the moisture content of the aggregate lower and further reduce the amount of fuel. Because if the moisture content in the aggregate is greater than 5%, the moisture will Make the aggregate consume more calories.According to calculations, if the moisture content of the aggregate is reduced by one percentage point, 9% of fuel consumption can be saved. In the design of the equipment structure, the design of the drying drum lifting blade structure is optimized. The negative pressure structure and the efficient intelligent oil distribution technology of the atomization control accuracy and oil quantity of the…

    2020-03-31
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  • Maintenance of pump truck structural parts

    Due to the poor working conditions of the pump truck, the alternating force and the severe vibration of the whole machine during the pumping operation may cause the connection of its structural parts to be loose or the weld seam to crack, etc., so the inspection of the pump truck structure is particularly important. The main inspection items are: ——The stability between the connecting piece and the supporting piece (between the chassis of the car, the pumping unit, the water tank, the reduction gear, the mixing mechanism, the concrete pipe, etc.). ——Reliability of connecting bolts and seals (especially shear and torsion elements) -The state of the component (the component may be broken or broken) ——Whether there are cracks in the welding seams such as the boom and the support ——Lubrication of pins and bushes, whether there is rust, seizure and wear (may break) —— swimming clearance caused by excessive wear due to mutual movement of parts Because the structural parts are loose or cracked, if they are not found and repaired in time, it may lead to serious accidents such as…

    2020-03-31
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  • Six inevitable failures of the mixing station,Do you get it?

    During the use of the concrete bacthing plant, due to the aging of parts, wear and environmental impact, 6 kinds of errors often occur. So how to deal with the failure of concrete bacthing plant?And how to solve common failures? 1.Inaccurate weighing of cement scales The fault manifests as the correct value can be displayed after the weight calibration, but the number does not return to zero after unloading. After resetting, the number of the weight changes greatly, but check that the sensor resistance value is in the normal range and there is no problem with the meter. The reasons for analysis may be: the angle iron of the fixed scale frame for transportation has not been removed; the card is issued at the indenter and the pressure plate; the scale body interferes with the outside world; the three sensor models do not match; The method for handling the failure of the concrete mixing station is: if the angle iron of the fixed scale frame for transportation has not been removed, it should be removed in time; if the indenter…

    2020-03-31
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  • Analysis and prevention of surface cracks in concrete construction in summer

    During the concrete construction process, the upper surface of the freshly poured concrete cannot be covered by formwork and exposed to the atmosphere. For various reasons, the surface often has cracks before it begins to be cured. Especially in summer construction, it has a large horizontal surface. Cracks in concrete are more prominent, such as cement concrete pavements, cement concrete bridge decks, and bridge deck paving, etc., which have different degrees of pre-health cracks. In view of this phenomenon, according to the characteristics of summer construction of this type of concrete, this article proposes some simple and easy early crack prevention measures for summer construction. Frist,Main characteristics of summer construction of large horizontal surface concrete: 1. The climate is hot and the temperature is high. 2. The temperature of the constituent materials of the concrete is high. Due to the high temperature and sunlight, the temperature of the sand and stone materials used to make the concrete mixture is high. The temperature of the new cement is often high. Due to the hot climate, the heat in the cement is…

    2020-03-31
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  • ABJZ40C Drum mixing pump common failure trouble shooting

    Common faults are divided into system faults and component faults. System faults are caused by component faults. For repairs, contact the professional engineers in the mall. 1. The main pumping system common fault a.The main oil cylinder no-action 1.Pumping start button wiring off. 2.Intermediate relay KA1 burned 3.Electro-hydraulic valve failure, usually pilot valve stuck or solenoid wire YV3, YV4 burned. 4.Hydraulic oil in the tank is too little 5.Filter severe blockage b.The master cylinder can not turning. 1.Electro-hydraulic valve spool stuck. 2.Electro-hydraulic valve magnet coil YV3, YV4 burned. 3.Intermediate relay burned c.The master cylinder piston is running slow and weakness 1.Master cylinder one way valve damage. 2.Hydraulic oil filter is clogged or oil not enough 3.Hydraulic oil in the tank is too little. 4.High-level pumping up the oil is not timely operation, closed chamber master cylinder hydraulic oil reduction, shortening the trip. d.Duct discharge conditions are not good:intermittent discharge or less discharge 1.Concrete piston badly worn 2.Glasses, plates and cutting ring gap is too large. 3.Poor workability of concrete material, causing inhalation difficulties. 4.S valve blockage. e.The dispensing valve swing…

    2020-03-31
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  • How to choose a good quality concrete pump?

    How to choose a good quality concrete pump?

    2020-03-26
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  • Straw carbonization industry favored by capital, promising prospects

    During the two sessions this year, Zhao Lixin, a deputy to the National People ’s Congress and deputy director of the Ministry of Agriculture ’s Planning and Design Institute, said that the technology of straw carbonization and soil improvement in China has reached the internationally advanced level and has achieved 10,000-ton scale industrialization applications. The solution to the problem of comprehensive utilization of straw provides a good method that is environmentally friendly, high in science and technology, and has great market prospects. Carbonization and recycling should be put into the national strategy for the development of green agriculture. Significant strategic significance. In recent years, due to the significant economic and social benefits of the straw carbon fertilizer project, it has attracted key support from social capital such as the China Development Bank, financial institutions, national industrial funds, provincial industrial funds, and special funds for poverty alleviation. On May 1, Fu Xingguo, Vice President of Sanju Environmental Protection, a key environmental protection company in the country, revealed that in 2018, the straw carbon fertilizer project entered a construction peak. On the…

    2020-03-24
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  • Safe use of pump trucks and daily maintenance

    (I) Safety precautions for concrete pump trucks during driving (1) The person driving the pump truck must hold the corresponding qualified driving license issued by the relevant department, and should comply with road traffic safety regulations. When the vehicle is running, the load, length, width, and height must not exceed the targets stipulated by the Road Traffic Law. When crossing underground passages, bridges, tunnels or high-altitude pipelines, high-altitude cables, sufficient space and distance must be ensured. As a pump truck operator, we should also master the structural characteristics of the equipment, understand the vertical height, dead weight, length, width, height of the pump truck boom, and pay attention to it during use. (2) The center of gravity of the concrete pump truck is relatively high, and it must slow down when turning to prevent tipping. The driving speed does not exceed the large vehicle speed of 85km / h in the technical data of the pump truck (II) Safety precautions for pump truck application 1. Pump truck operators must undergo professional training, obtain a license issued by the safety and…

    2020-03-24
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  • How to choose a concrete mixing plant?

    1. Selection of mixing host. According to the performance label of the construction concrete, decide what kind of mixing host to choose. For water conservancy projects, a forced mixing host must be selected. In addition, the batching station and storage bin should be selected according to the type of concrete that can be stirred. 2. Selection of engineering concrete mixing station specifications. According to the task of construction concrete and its construction period, choose the size of the mixing station. Let the total concrete task amount be M; the number of concrete pouring days is T; the number of working hours per day is H; the utilization factor is K; the specification of the mixing station should be X = M / T * H * K, where K is 7-0.9. In the selection, the transportation condition of the finished concrete should also be considered. Such as: direct pumping or vehicle transportation. The volume of the conveying vehicle is also an important basis for determining the type of the mixing station. 3. The construction environment and construction objects are also…

    2020-03-24
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