1、 Preparation for scraper conveyor installation

(1) The staff participating in the installation and test run shall carefully read the instructions of the machine, the instructions of supporting equipment and other relevant technical data and safety regulations, and be familiar with the structure, working principle, installation procedures and precautions of the machine;

（2） Check whether the form and capacity of scraper conveyor are suitable for working conditions;

(3) Check all parts, accessories, spare parts and special tools of the machine one by one according to the delivery list and technical data of the machine;

(4) According to the technical data of the whole machine, check the appearance quality and geometry of all parts, and repair and remove the rust in case of collision, deformation and rust. Especially for the explosion-proof equipment, it must be inspected by the full-time explosion-proof inspector, and it can only be put into the well after the permit is issued;

(5) Prepare installation tools and lubricating grease;

(6) Designate the work commander and select the installation site.

In order to check the mechanical properties of the scraper conveyor, make the installation and maintenance personnel and operators familiar with the installation, installation, repair and operation technology, Zui is good to carry out the installation and commissioning on the ground, and can only be installed in the well if there is no problem.

2、 Requirements for ground trial assembly of scraper conveyor

(1) The head of the machine must be placed properly, and the stable pad shall not shake;

(2) The laying of the middle chute shall be flat, stable and straight, and the laying direction must be correct, that is, the approach plate of each section must face the machine head;

(3) The seam between the coal baffle and the groove side shall be tight and tight without any gap;

(4) Scraper conveyor with coal shoveling board, between the coal shoveling board and the tank side shall be tight and tight without gap;

(5) The welding joint of the ring chain shall not face the middle plate and shall not be tightened; the number of links in each section between the double chain scraper plates must be equal. The direction of the scraper shall not be wrong. For the bolts connecting the scraper horizontally, the head must face the running direction; for the bolts connecting the scraper vertically, the head must face the middle plate;

(6) The signal device installed along the scraper conveyor shall meet the specified requirements;

(7) After installation, careful inspection and test run shall be carried out, and only after the operation is normal can preparation work before installation be done.

3、 Procedure when installing scraper conveyor on the ground

(1) All personnel involved in the installation shall always abide by the safety operation procedures, strictly prevent the occurrence of equipment and personal accidents, and prepare the installation process documents;

(2) All parts used for installation shall be transported to the installation site and arranged in order according to the predetermined installation location;

(3) First, install and fix the head together, and connect the power supply with the motor as required;

(4) Pass the scraper chain through the chain path under the head frame, and the chains shall not be intertwined or tightened. The lower side of the welding joint of the ring chain;

(5) Install the tail part of the machine in a similar way, and connect the chain with a quick joint to reach a sufficient length;

(6) Pass the chain around the head and tail sprockets respectively and connect them in the upper chain path, and keep it loose;

(7) Install other parts and components completely according to the general drawing of the equipment;

(8) Remove the sundries at the chain track and check whether the connection and fastening of each part are reliable.

4、 Precautions for no-load test run on the ground

(1) Jog the motor and observe whether the rotation direction of the head and tail motor is correct. Turn on the motor after the direction is consistent, and observe whether there is any jamming and abnormal noise;

(2) The tail driven motor shall be ahead of the head driven motor, generally controlled between 0.0035 and 0.013s/m, accumulated as delay time, but the small lead time of Zui shall not be less than 0.5s, and the large lead time of Zui shall not be more than 3S;

(3) Start the scraper conveyor, check whether there is abnormal noise in the motor and reducer, and the temperature shall not rise suddenly;

(4) Check whether the engagement of chain and sprocket is normal and whether there is chain skipping. Whether the scraper chain has run out in the transition or middle section of the machine head. If there is run out, it means that the pre tension of the chain is too large and should be reduced again;

(5) The scraper chain shall be free of jamming in the whole upper and lower chain tracks.

5、 Preparation before the buried scraper conveyor is lowered into the well

(1) All parts shall be intact, otherwise they shall be repaired;

(2) The components that do not need to be disassembled and lowered into the well shall be fastened and reliable;

(3) The components that need to be disassembled and lowered into the well shall be placed and marked according to the class, the small parts that are easy to lose and mix shall be packed according to the class, and the exposed processing and matching components (such as shaft hole, oil hole, etc.) shall be provided with anti-collision, anti blocking, anti dirt and other measures;

(4) According to the surface installation situation, formulate the process flow of downhole installation and downhole installation, and indicate the transportation location of the downhole components in the obvious position.

6、 Precautions for installation and commissioning of scraper conveyor underground

(1) The installation and commissioning of scraper conveyor in the underground can be carried out according to the order of ground installation and commissioning;

(2) It is installed while running down the well to avoid the accumulation of parts in the upper and lower grooves;

(3) Try to lay the scraper conveyor straight to ensure its reliability and service life;

(4) The no-load operation shall be carried out for 1-2 h first, and the operation condition shall meet the requirements;

(5) Carry out multi machine linkage load operation for 4h, and carry out the following checks:

① All parts are fastened without looseness;

② The tightness of the two scraper chains is basically the same;

③ The temperature of motor, reducer, sprocket shaft and other parts shall not exceed the allowable value of 75 ℃;

④ The electrical system works normally;

⑤ Tighten the chain again. When the tightness is fully loaded according to the specified laying length, it is better to loosen two chain links at the lower part of the machine head, otherwise, it is necessary to tighten the chain again. After all parts are debugged normally, they can be put into normal use.

7、 Installation of scraper conveyor in fully mechanized coal face