March 30, 2020

Safety technical measures for the installation of retractable tape conveyor

First, construction preparation:

1. The hoisting mechanism is designed in advance by the production technology department on the basis of the installation head.

2. Check the transmission part of the belt conveyor, the storage bin frame, the tensioning device, etc. in advance, and prepare the missing parts in advance.

3. The production technology department is responsible for placing the longitudinal centerline and crosshair of the belt down the mountain. The construction unit must strictly follow the marking construction to ensure the installation quality.

4. The manufacturer shall test the electric control equipment used in the belt conveyor, and the problems will be changed in time.

5. Before the construction, the belt conveyor floor should be leveled and leveled to prepare for the installation of the belt conveyor.

6. Accept the acceptance of the machine head and the tail of the machine, proofread the relevant dimensions, and repair the non-conformity.

Second, the construction steps:

1. Before the construction, the machine head, the intermediate frame, the H frame, the drum and the tail are transported in advance to ensure the continuity of the construction.

2, installation nose section, should advance the use of the roadway lifting mechanism, the suspending, before lifting check that all lifting shed is solid, down chain, the chain is qualified, non iron wire hanging.

3. It is strictly forbidden to stand in the area below all lifting work and possible heavy objects.

4. The head support, the electric drum, and the unloading device are assembled in sequence. The construction at the end of the belt conveyor is the same as that at the head.

5. Install the storage bin frame, weld the slide rail to the pre-embedded frame, and fix the leg with concrete.

6, the installation of belt comprehensive protection (smoke, over temperature, watering, deviation, emergency stop, broken belt, speeding).

7. Install the feed switch, vacuum soft starter and ratchet tensioner.

8. Install the intermediate frame and the idler. The intermediate frame longitudinal beam is fixed by four M16×50 bolts. The belt connection is anchored by belt buckle, and the interface requirements are straight.

9. Install the lower roller first, then lay the lower belt, then install the upper roller and lay the belt.

10. Laying of the grounding pole: The local grounding pole can be set in the roadway ditch or other nearby wet place, and the local grounding pole application area in the ditch is not less than 0.6 square meters, the thickness of the steel plate is not less than 3mm or the same effective area. The steel pipe is made and laid flat and deep in the ditch. The steel pipe with other diameters of not less than 35mm and length of not less than 1.5m shall be installed at other locations. The pipe shall be drilled with 10 through holes of not less than 5mm in diameter and buried vertically. floor.

11. Cable laying: cable hooks must be used for cable hanging. The cables hanging in the roadway must have proper sag (1%) and can fall off freely under accidental force. The hanging height should be 800mm above the belt and should not be hung. On the wind, water pipes.

Third, technical requirements:

1. Strictly follow the on-site calibration of the center line, “Ten” word line and waist line construction, and the accuracy meets the installation requirements.

2. The parallelism between the axis of the drum and the horizontal plane is not more than 1/1000.

3. The axis of the drum and the conveyor should be centered, and the symmetry is not more than 3mm.

4. The upper surface of the roller should be parallel to the floor of the roadway.

5. The left and right rail treads of the storage bin should be on the same level and should be parallel to the centerline of the conveyor frame.

6. After the cleaner is installed, the contact length of the cleaner and the conveyor belt in the direction of the drum axis should be greater than 85% of the bandwidth.

7. After the installation and fixing of the head drive, the storage bin and the intermediate transmission are completed, the dry running test should be carried out.

Fourth, security measures:

1. All construction personnel must carefully study this measure and sign it. It is strictly forbidden to drink before the class, keep the mind clear, and hold the certificate. Strictly follow the measures for construction.

2. Before the construction, the person in charge of the construction must check whether all the lifting tools such as the chain and the chain are in good condition and qualified.

3. Lifting equipment and heavy objects must comply with the following regulations:

1) Before using the chain to lift the equipment and heavy objects, the chain must be inspected. Check that all parts are complete, flexible and reliable, so that the small chain pawls and shields are complete. It is strictly forbidden to use a chain that cannot be self-locking.

2) Lifting in the roadway, pay attention to the change of the roof of the roadway.

3) The weight of lifting equipment and heavy objects must conform to the nameplate of the reverse chain. It is strictly forbidden to use the chain to lift the weight of the nameplate.

4) When lifting, it must be carried out by 2 people. One person operates, one person inspects and directs, one person is strictly prohibited to hoist, and it is strictly forbidden to stand under heavy objects.

5) When lifting equipment and heavy objects in the upper and lower mountains, there shall be no people underneath, and the personnel shall operate the reverse chain on the upper side of the heavy objects. And stop the transportation within the scope of the roadway hoisting.

6) When operating, the force of the reverse chain should be uniform, and the impact should be avoided as much as possible. Care should be taken when loosening the chain to prevent the chain lockout from failing, causing the equipment and heavy objects to suddenly sink.

4. When lifting, transporting or installing, it is strictly forbidden to damage the equipment. The wearing parts should be removed and kept safely.

5. The head and the position of the belt conveyor must be equipped with a protective cover for each rotating part. The moving part of the head of the belt machine must be equipped with a protective net.

6. Before the test, the installation quality should be thoroughly checked. The lubrication parts should be filled according to the regulations. The conveyor will remove any obstacles that hinder the operation of the equipment. Check whether the electrical system's joints and lines are correct and reliable, and whether all the protective equipments are in place. When the belt conveyor is in trial operation, the driver and the maintenance worker should carefully observe and check the surrounding safety facilities and protection devices, and assign a special person at the tail of the belt to monitor that no one is allowed to walk within the operating range during the trial operation. All the unrelated personnel along the way were evacuated from the scene. After all the inspections were completed, all the management personnel at each point were evacuated to a safe location. Before the operation, you should say hello and reply to everything. After the safety is confirmed, the driver confirms the signal and opens and stops the belt conveyor according to the prescribed signal. Before each start, a signal must be sent to inform other personnel to leave the rotating part and moving part of the belt conveyor, and then move twice to formally operate.

12, test operation requirements:

1) Whether the direction of the drum is correct or normal.

2) The tensioning device should ensure convenient adjustment and flexible movement. The conveyor belt should be tight and tight during the start and operation of the conveyor, and must not be slippery.

3), various protection reactions are sensitive and reliable.

4) The performance of the cleaner is stable and the length of contact with the tape is appropriate.

5), the deviation is adjusted (the deviation is not more than 25mm).

6), team members such as technical strength can not meet the requirements. The machine can be applied in advance to cooperate with the construction unit for trial operation.

7. Do not force overload to start.

8. It is strictly forbidden for the driver, maintenance workers and other personnel to adjust, repair, or exceed the safety distance when the belt is running.

9. Non-maintenance personnel are strictly forbidden to walk in the belt lane. When the staff passes through the belt lane, the clothing is neat and tidy, and the clothes buckles are all buckled. It is strictly forbidden to wear clothes buckles and clothes to be dragged; the miner's lamp head must be hung on the hook. The cable is stowed. No one can carry any flexible items such as wires or cables or steel objects longer than 200 mm.

10. The safety supervision station sent an safety supervisor to supervise the implementation of safety measures.

V. Security requirements

1. On-site operators must have certain knowledge of belt conveyors and be skilled in the operation industry.

2, in addition to the implementation of the measures, must strictly enforce the "Coal Mine Safety Regulations" of the relevant provisions.

6. Requirements after construction

1. After the construction is completed, the work place should be kept clean. The person in charge of the construction should observe the operation of the equipment at a safe distance and find an abnormality and stop running immediately.

2. After the work is completed, all equipment and tools must be recycled.

Seven, reporting system

After the completion of the construction, the reporting system must be strictly implemented: after the construction is completed, it must be reported to the customs department and the dispatching office.

Eight, other

The imperfect measures are implemented in the "Safety Regulations for Coal Mines" and the relevant provisions of the "Basic Safety Regulations for Equipment Operation and Maintenance".

Nine, on-site inspection

Site safety assessment:

On-site inspection after the end of the operation.

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