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Construction preparation report of Nanning double hzs270 concrete mixing station

Author: admin Release time: June 12, 2017 Number of visits:

Recently, Great Wall Construction Machinery Co., Ltd. has built and installed double hzs270 concrete mixing plant in Nanning, Guangxi. The double hzs270 concrete mixing plant is produced by Zhengzhou Great Wall Construction Machinery Co., Ltd., which is mainly composed of material supply, metering, mixing and electrical control system. The main task of this installation is to complete the installation of all systems on site after strict inspection, and carry out acceptance and commissioning according to the factory requirements, so that the mixing plant can operate normally. Four of them are not provided by the original factory and need to be modified during installation.

1、 Construction preparation:

1. Auxiliary installation machinery required: a truck crane with rated lifting capacity of 50t and lifting height of H ≥ 20m.

2. Auxiliary tools: 2 electric welding machines, 2 1.5T chain blocks, spanners, crowbars, pipe tongs

3. Labor Organization: 1 person in charge of construction; 1 person in charge of technology; 2 lifting workers and 4 installers; 2 operators; 1 electrician; 1 Safety Officer; 2 WELDERS; 14 in total.

Operation conditions: the construction shall be carried out under the weather conditions of no rain, snow and fog, and the wind force is less than level 5.

2、 Safety and technical disclosure

Before construction, all participants shall be organized to carry out safety and technical disclosure training and sign, so as to make sure the mechanical structure, working principle, respective construction responsibilities, safety precautions, and specific construction methods and processes.

3、 Construction progress

Host installation: 1 day

Accessories: 2 days for installation

Aggregate silo installation: 1 day

Large tank, screw conveyor installation for 2 days

Each metering system will be installed for 2 days

Commissioning 1 day

Note: installation of each mechanism can be cross operated

4、 Quality objectives

1. The connection of steel structure is reliable and has little vibration.

2. The main engine and feeding mechanism run smoothly, safe and reliable.

3. Each control element works sensitively, and each actuator opens and closes flexibly without jamming.

4. The measurement system is accurate with an error of ± 1%

5、 Quality preventive measures

1. All anchor bolts must be tightened, and the welding of iron plate and embedded parts must be welded by professional welders, and must be firm. The bolts must be fixed on the same track and cannot be fixed reliably

2. All connecting bolts of reducer must be firm, with proper amount of lubricating oil, and other lubricating oil or grease to be injected shall be filled well.

3. The steel wire rope and rope hoisting device of aggregate bucket shall be firm, and the length of two steel wire ropes shall be consistent.

4. The fixed end of each electrical component shall not be loose.

5. The insulation between the main circuits shall be good, and the insulation of the zero line of each machine body and casing shall be good.

6. The opening and closing of each actuating cylinder and storage door should be flexible and reliable.

6、 Quality assurance measures

The technical director shall organize all participants to carry out technical training to make them clear about the structure and working principle of the machinery, and strictly follow the construction process card, and shall not be changed at will.

 

7、 Installation scheme

After the foundation acceptance, the main engine shall be installed first, then the cement tank and control room shall be installed, then the screw conveyor and aggregate bin shall be installed, and the accessories of hzs270 concrete mixing station shall be installed later.

Foundation acceptance and acceptance → positioning and setting out → host installation → control room installation → cement tank installation → screw conveyor installation → batching bin installation → waterway system installation → electronic scale installation → whole machine debugging.