High Cost-effective construction equipment

1. TOP Four High Cost-effective Construction Equipment Abstract: If you want to supply quality concrete for yourself or many construction contractors, building a small concrete batching plant is a goo choice. Drum type hot mix plant is an economic way to produce asphalt. Mounted concrete mixer pump and self loading mixer are very friendly to small construction projects. Wet Batch Concrete Plant In recent years, many engineering contractors have chosen to purchase more and more small wet batch concrete plants. So what does a complete set of small concrete mixing plants include?

2. 1. Concrete Mixer Concrete mixers are divided into compulsory concrete mixer and drum concrete mixer. The twin shaft concrete mixer is the mainstream concrete mixer. It can mix a variety of concrete such as fluid, air-dry forced and dry-hard concrete. 2. Weighing system The raw material weighing system is the core component that affects the performance, quality and cost of concrete products. It is mainly divided into three parts: aggregate weighing, powder weighing and liquid weighing. 3. Conveyor system The conveying system software mainly includes aggregate conveying, powder conveying, and liquid additive conveying. There are two types of aggregate transportation in small mixing plants: hopper bin transportation and transmission belt transportation. The advantages of the lifting hopper are its small footprint and compact structure. The advantages of transmission belt conveying are large conveying distance, high work efficiency and low failure rate. The commonly used powder conveying method is screw conveyor, which has the advantages of compact structure, low cost and reliable application. Liquid transportation mainly refers to water and liquid superplasticizer, which are transported by centrifugal water pumps respectively. 4. Storage of materials The material storage methods of concrete raw materials are basically the same. Aggregate is accumulated in a closed material yard; powder is stored in a steel silo with a closed steel frame structure; concrete admixtures are stored in a filling machine. 5. Automatic control system The automatic control system of a small concrete batching plant is the brain of the entire machine. The automatic control system can have different functions and configurations according to the different requirements of users. Generally, the automatic control system of a small concrete mixing plant will be simpler.

3. Small concrete mixing plant models There are not many models of small concrete mixing plants, including HZS25, HZS35 and HZS50 concrete batching plant. They do not occupy a large area and their production efficiency is not very high. You can choose a small concrete mixing station model according to your actual needs. Work flow of small RMC batching plant The aggregate is discharged from the discharging door of the aggregate bin of the batching machine into the aggregate measuring hopper for measurement. After measurement, it is unloaded onto the running flat belt, which is sent to the bucket elevator. At the same time, cement and fly ash are transported by the screw conveyor to their respective measuring hoppers for measurement. Water and admixtures are pumped to their respective measuring hoppers for measurement by water pumps and admixture pumps respectively. After the various materials are measured, the control system issues instructions to start feeding the materials into the concrete mixer in sequence for mixing. After the mixing is completed, the discharge door of the concrete mixer is opened, and the concrete is discharged into the concrete mixer truck through the discharge hopper, and then the concrete batching plant enters the next work cycle. Drum Type Asphalt Hot Mix Plant The continuous drum type hot mix pant is mainly composed of a cold aggregate supply system, a drying drum, a continuous mixer (optional), a combustion system, a dust removal system, a finished asphalt storage bin, an asphalt supply system, a control system, etc. The continuous drum mix asphalt mixing plant is very different from the batch type asphalt mixing plant. It produces asphalt mix in a drum, which also continuously dries the aggregate.

4. Cold aggregate supply metering device Since various materials of the continuous drum mixing equipment are continuously supplied and discharged, there is no secondary screening and metering device for aggregates, and the grading accuracy of the finished materials depends on the accuracy of the cold aggregate batching device. In order to ensure the accuracy of the cold aggregate grading ratio, a metering device is set up between the aggregate belt behind the feeder and the aggregate conveyor. After the cold aggregates of various specifications are batched by the batching device, they are transported to the drying mixing drum by the weighing belt conveyor. A vibrating screen can also be installed at the feed end of the weighing belt conveyor

5. to prevent oversized stones from entering the drying mixing drum. The weighing belt conveyor simultaneously completes the transportation of cold aggregate and the weighing of the total mass of various grades of ingredients. Drying and Mixing Drum The appearance, internal structure, supporting burner, drum driving device, etc. of the drying mixing drum are similar to the drying drum of the asphalt batch plant. Their differences are as follows: 1. The heating device is located at the material feeding end of the drum, and the dust collection device is located at the discharge end of the drum. The material and the hot air flow flow in the same direction, that is, the drying of cold aggregate adopts the downstream heating method. 2. The drying, heating and mixing of cold aggregate with asphalt are completed in the drum at one time. The drying mixing drum is divided into four process areas, with different blades along the length of the drum. Burner and automatic adjustment device The control system uses the computer to automatically adjust the oil-gas ratio of the burner through "feedforward" and "feedback" detection signals, thereby ensuring the mixing quality of the mixture. Powder supply system Stone powder is also measured continuously. The impeller feeder of the powder silo is connected to the weighing and measuring device. The continuously collected signals are processed by the microcomputer in the control room, and the system automatically changes the rotation speed of the feeder to adjust the supply amount.

6. How to add stone powder to drying drum 1. Use a screw conveyor to send the powder to the cold aggregate weighing belt conveyor, and then enter the drying mixing drum together with the cold aggregate. This method is simple and easy to implement, but if the wind speed in the drum is too high, the powder will easily be lost. Another method is to use the pneumatic conveying method. It enters the drum from the discharge end through the pipeline, and its outlet is located below the outlet of the asphalt pipeline. Since the powder is adhered to the asphalt sprayed above after it is discharged from the tube, it is not easily blown away, but it is easy to agglomerate and difficult to mix evenly. Trailer Mounted Concrete Mixture Pump The small concrete mixture pump can greatly improve the efficiency of construction. At the construction site, it can not only mix concrete, but also pump concrete. There are different types of concrete mixing pump including electric concrete pump, hydraulic concrete pump, diesel concrete pump,etc. Users can choose the small mixing pump model suitable for their own project conditions based on their project power grid load, project task volume, and construction period. How to operate it?

7. 1. Before starting the concrete mixer pump, you should carefully read the operating instructions and matters needing attention. Do not operate the machine unless you have read and thoroughly understood the instructions to avoid making unnecessary mistakes. 2. Before the concrete mixing pump enters the site, you must choose the location where the machine should be placed. The place should be a place very close to the sand and cement. At the same time, you should also observe whether the water pipes and wires are easily accessible to the concrete mixing pump. 3. The operator must make sure whether the transportation direction is beneficial to the construction. Try to achieve the shortest distance transportation and straight-line transportation, which can minimize resistance, reduce the chance of blockage, speed up the transportation speed and improve construction efficiency. 4. Check whether the place where the concrete mixer pump is placed is hard and stable to avoid collapse and subsidence during the construction process, and keep the concrete mixer pump level on the ground. 5. Measure and calculate the height distance from the concrete mixing pump to the

8. construction floor. The measured distance should not exceed 300 meters when converted to the ground level. If possible, a layout diagram can be drawn to make it easier to calculate the number of pipes and bends. 6. Before starting the concrete mixing pump, check each oil pump, water tank and other places of the pump to see if they are normal. In summer, you should also pay attention to hydraulic oil, water temperature, etc. 7. After the concrete mixing pump is started, it is prohibited to disassemble any parts of the equipment, such as drain screens, mixers, conveying pipes, etc. How to maintain concrete mixer pump 1. Daily inspection: appearance damage and deformation, loose parts, oil leakage, hose damage, lack of lubricating grease in lubrication points,etc. 2. 2. Monthly inspection (or 2,000 cubic meters of concrete pumped): slide valve damage, delivery pipe wear, hydraulic oil reduction, forced lubrication of lubrication points,etc. 3. Half-year inspection (or 12,000 cubic meters of concrete pumped): damage to the lower shell of the slide valve and the delivery cylinder, electrical components damage, deterioration of hydraulic oil,etc. 4. Yearly inspection(or 24,000 cubic meters of concrete pumped): mixing device, mixing oil motor, rotary oil motor, water pump, each oil pump, and hydraulic oil replacing. ​ ​ 5. Inspection every two years (or 48,000 cubic meters of concrete pumped): All items of the mounted concrete pump should be replaced during disassembly and inspection. Self Loading Mixer for Sale The self loading mixer for sale is a fully automatic concrete mixer truck that has emerged in the engineering industry in recent years. Its emergence has enabled fully automated production of concrete starting from raw materials to discharging. Is it good

9. to use in mountainous areas? Different from the broad and flat roads in the city, the roads in the mountainous environment are rugged and the dirt roads are covered with stones and have small slopes from time to time. Once it rains, the dirt roads become muddy and it is even more troublesome to drive. In fact, such an environment has no impact on the self loading concrete mixer. The self loading transit mixer produced by Haomei Machinery is designed to solve the problem of concrete production in mountainous projects. It creates a combination of an articulated frame and four-wheel drive, so that the bumpy roads in mountainous areas are completely ignored. The front and rear frames of the self loading concrete mixer are connected to one end of two steering cylinders respectively. The driver can control the two steering cylinders to alternately extend and contract to achieve steering. Such an articulated frame has the characteristics of flexible steering and stable walking. The four wheel drive can distribute the engine output torque to the four wheels in different proportions according to different road conditions. It has the characteristics of smooth driving, strong braking performance, high safety, and strong driving force. It is especially suitable for construction in complex road conditions such as mountainous

10. areas and wild areas. It can climb the slope of 30 degrees. Unlike traditional concrete mixer trucks, the self loading concrete mixer truck does not require manual loading, which not only saves loading time, but also reduces dust flying during loading. In this way, the self-loading mixer truck reduces manpower input at the construction site, improves work efficiency, and greatly shortens the construction period. There is a large arm next to the cab of the automatic loading mixer truck, called the loading arm. When the driver operates in the cab, the loading arm can perform a series of lowering, shoveling, and lifting movements. After a worker has placed the materials, the driver controls the loading arm to drop the shovel material. After the shoveling is completed, the driver controls the loading arm to raise the bucket to the mouth of the mixing tank, and continues to operate to open the rear mouth of the bucket, so that the materials in the bucket can be accurately Into the mixing tank.