The Application of Self Loading Concrete Mixer in Projects

1. The Application of Self Loading Concrete Mixer in Projects Abstract: The self loading concrete mixer is of four wheel drive and 270 degree discharging. It has self loading, weighing, mixing, discharging and transport in one. It is widely used for those projects like transmission line and road construction in Africa, South Asia,America,etc. African Transmission Line Project For the transmission line projects in Africa, they are of low voltage levels, long line paths, small amount of concrete and heavy seasonal influence on construction, which creates the innate conditions for the use of large-scale mechanized operations. The Côte d’Ivoire power grid development and transformation project is located in Côte d’Ivoire in western Africa. The construction scale is: 392 kilometers of 225kV lines, 39 kilometers of new 90kV lines, 1068 tower foundations and 20,999 m3 of concrete volume. Subject to the impacts and constraints of the country’s labor productivity, natural environment, infrastructure, etc., how to improve mechanization is very important for improving construction efficiency and reducing project costs. In view of the engineering characteristics of this project, in addition to traditional concrete mixer, mechanized construction methods can be commercial concrete, concrete batching plant or self loading mixer.

2. Analysis of the Pros and Cons Of Different Types of Construction Methods Concrete Mixer Advantage: It is a traditional construction method, which is of small investment and strong adaptability. Disadvantages: It is of low construction efficiency, high personnel input and high loss of raw materials. The concrete quality is not stable. Commercial Concrete Advantage: It is simple, efficient, flexible and convenient. The concrete quality is table. Disadvantage: In addition to the construction sites of its capital, the commercial concrete is not available in other cities. Concrete Batching Plant Pros: Its concrete quality is stable, the loss of raw materials is low, the production speed is fast, the transportation volume is large and the pouring speed is fast. Cons: It has high investment cost and troublesome relocation. It has high requirements for roads and needs stop working in rainy seasons, thus seriously affecting the construction period. Self Loading Concrete Mixer Pros: It is of cute body and four wheel drive, which has strong adaptability to terrain and excellent performance in rainy season. With industrial scale and strong mixing technology, the self loading mixer also has excellent mixing quality. It has self loading, weighing, mixing, transport and discharging in one, saving equipment investment. Cons: It is especially suitable for small and medium projects since its concrete capacity is 1.8-6.5 m3 per batch. For this project, we can choose concrete batching plant and self loading mixer. Haomei Machinery’s self loading mixer has been exported to many African countries, including Kenya, Ethiopia, Tanzania, South Africa, Uganda,etc. The Advantages of Self Loading Mixer Machine The transmission transportation, high labor cost and affect of the rainy season. According to static input analysis, the investment of concrete batching plant is much larger than that of self loading mixer machine. line projects in Africa features long line, inconvenient

3. The radiation range of concrete batching plant is at least 50-80 kilometers. In order to meet the continuity of concrete pouring, when the distance is too long, the number of concrete mixer trucks may have to be increased. If you want to shorten the radiation range and improve the construction efficiency, the number of relocations of the concrete mixing plant will increase, but the relocation will be very troublesome. Most of the lines in this project are far away from the main road and some new road needs to be built first. The concrete mixer truck weighs heavily after being fully loaded, and has poor off-road performance in the rainy season. Therefore it has high requirements for the road quality, bringing high investment in in road construction. Therefore, from an economic point of view, the self loading concrete mixer has more advantages. The self loading concrete mixer is of small mechanical input and labor cost. Its has low requirements on the road construction, which greatly reduces the investment in building access. It is of four wheel drive, which has good off-road performance. Compared with the experience of previous projects, the work efficiency of the traditional mixer is reduced by more than 50% in the rainy season, and the construction of the concrete mixing plant is basically impossible in the rainy season. The working efficiency of the self loading concrete mixer for sale is only reduced by 20%.

4. The mixing drum can rotate freely and can adapt to the surrounding environment of different foundation pits, without the need for concrete pumps or manual secondary dumping. It has low material loss, stable mixing ratio control and good concrete quality. Unlike the traditional concrete mixer, the self loading mixer doesn’t need a large space and a mixing field. Due to its full load, the moving speed of the self loading mixer is slow and is only suitable for short-distance transportation. In this transmission line project, the average concrete needed of the single base is about 20m3. If the volume of the single base is much larger, it is better to choose concrete batching plant. The feeding system is a bucket type, and it is easy to shovel the ground soil when there is not much sand left. Self Loading Concrete Mixer Truck in Sri Lanka The self loading concrete mixer is a versatile concrete equipment having self loading, weighing, mixing, discharging and transport. With four wheel drive and no need for electricity, it is a popular choice in mountainous countries. In March 2021, Haomei HM2.0 self loading concrete mixer truck was delivered to the Sri Lanka. Its discharging volume is 2.0 m3 and the whole cycle from loading to discharging takes 12-15 minutes. The hourly output is 8-10 m3. Sri Lanka is located in South Asia, in the North Indian Ocean south of the Indian Peninsula. It is the largest island in South Asia. It is known as the "Pearl of the Indian Ocean". Sri Lanka is a mainland island. The central part of the island is dominated by mountainous terrain, with rugged terrain. With this self loading concrete mixer, our customer can easily get concrete anytime with low labor cost and only raw material cost. It not only helps to improve construction efficiency, but also expands the profit. Hydraulic Four Wheel Drive of Self Loading Mixer The self loading mixer is mainly used for road paving, dams, infrastructure construction and other related projects, as well as small projects in urbanization

5. construction. It has a loading function similar to that of a loader, which can automatically load materials to the mixing drum. It can also measure the proportion of various materials and water, and finally mix concrete that meets the requirements. Due to the particularity of some working conditions, facing the narrow construction space, the flexibility of the self loading concrete mixer machine is relatively high. Therefore, Haomei self mixers all adopt four wheel drive with three steering modes, which can be switched through the instrument buttons. The hydraulic steering system is mainly composed of a quantitative gear pump, a hydraulic steering gear, an electromagnetic reversing valve, an electromagnetic steering control valve and a pilot relief valve. Front wheel steering mode The electromagnetic steering control valve 7 is in the neutral position, and the hydraulic oil flowing to the rear wheel steering cylinder is blocked by the control valve 7. At this time, the front wheel is steering. When the steering gear rotates, part of the high pressure oil of the oil pump enters the steering cylinder through the load sensor steering gear, helping to realize steering function. Four-wheel steering mode When the electromagnetic steering control valve 7 is energized on the right side, the spool is pushed to the right side. At this time, the front and rear wheel steering cylinders are pushed in opposite directions, that is, four-wheel steering is realized. It has small steering angle, which can adapt to the narrow construction space. Wedge steering mode When the electromagnetic steering control valve 7 is energized on the left side, the spool is pushed to the left. At this time, the front and rear wheel steering cylinders are pushed in the same direction, that is, wedge steering is realized. Advantages of Hydraulic Four Wheel Drive The self loading mixer machine is a popular choice in mountainous areas because of its powerful function. It has self feeding, weighing, mixing, transport and discharging. Four wheel drive is its distinctive feature. What are the advantages of self loading mixer machines? The four wheel drive means that he rear wheels also have a certain steering function like the front wheels. They can not only turn in the same direction as the front wheels. but can also turn in the opposite direction to the front wheels. When the self

6. loading mixer is running at low speed, its rear wheels and front wheels turn in opposite direction, which can reduce the turning radius and improve its ease of handling and maneuverability. When the self loading concrete mixer is driving at a high speed, the rear wheel and the front wheel turn in the same direction, which helps to reduce the vehicle's side slip or twisting, and helps to balance the vehicle's response when overtaking, changing lanes or avoiding uneven roads, and enhances the car's high-speed driving stability. The main advantage of four wheel drive is that it it can keep the deflection angle of the center of gravity at substantially zero when steering, which greatly improves the transient performance indicators of yaw rate and lateral acceleration. In recent years, the tonnage of trucks and special operating vehicles has gradually increased, and some have a total weight of more than 30t. Automobile axles are increased from two axles to multiple axles. Therefore, the flexibility and stability requirements of construction machinery become more and more important. For ordinary construction vehicles without four wheel drive, the driver has to rotate the steering wheel left and right many times, loosen and close the clutch, pull the forward gear, and constantly increase the accelerator to complete a U-turn when the self loading concrete mixer turns around in a limited working space. The complex operating process not only makes drivers fatigue, but also brings serious environmental pollution and unnecessary energy waste. For the self loading mixer machine with four wheel drive, a U-turn can be completed by rotating the steering wheel left and right once. It can not only improve work efficiency, reduce the driver's labor intensity, but also make full use of space and reduce energy consumption.