Scraper conveyors recycling safety technical measure

The removal of the scraper conveyor is carried out after the evacuation passage is completed. First, the scraper chain is removed together with the scraper, and after being transported from the machine lane, the middle slot and the frame of the front scraper conveyor are both inclined. The main and auxiliary winches are towed and transported directly from the wind tunnel on the working surface; the rear conveyor is recycled in two stages at the same time. To ensure construction safety, the following measures are specially formulated.

First, the scraper conveyor retraction sequence

Scraper and scraper chain--Scraper conveyor tail and its transmission cooling water pipe and cable--Scraper conveyor head and its transmission part--the machine head bending transition groove--the middle slot and cable trough

Second, disassembly, loading and binding

1. When removing the scraper conveyor, first stop the power lock, then open the chain on the scraper at the transition slot of the machine head, lock the motor of the head to send power to the tail motor, and the motor at the tail rotates all the scrapes. The plate chain is spit out and manually pulled to the side of the coal wall to be transported out of the machine lane.

2. After the tail of the scraper conveyor is removed, it is disassembled by the wind lane winch to the lifting device, and the transmission part is removed and loaded separately. The specific method of loading the car is to use two inverted chains to respectively hang the two parts of the part to lift a certain height, then push the flatbed into the equipment and load the car. When binding, each car is bundled with no less than 6 places, and each place is not less than 6 shares 8# lead wire tighteners bundle, i.e. the first bundle 8 is fixed at the four corners with the lead wire #, then the two cord lock rope flower column Φ18.5mm mating screw diagonally cross bundle.

3. The tail transition slot and its adjacent two central slots are all transported to the wind lane for loading.

4. After the above work is completed, install the turntable and track laying work, and at the same time prepare for the middle slot.

5. When disassembling the middle slot and cable trough, first remove the two racks on the side of the coal wall, then remove the cable trough. The two chutes are completely disassembled, and the middle connection dumbbell pin is not removable.

6. The central trough and the cable trough are loaded with inclined platform. The main winch is used to pull the flatbed, and the flatbed is reliably connected with the inclined platform. The auxiliary winch is used to pull the middle frame for loading. It is required to install one piece, and the binding method is the same as above. The bundling must be firm and reliable. After the equipment is bundled, the auxiliary winch hooks can be removed. Each car requires only two chutes and two cable troughs.

7. After the loading is completed, if there is no problem after inspection, remove the connecting pin between the inclined platform and the flat workshop, remove the auxiliary winch wire rope from the track, use the main winch to lift to the turntable, and use the winch to transport to the +1170m yard.

8. After the disassemble of the scraper conveyor head, the inclined platform is also used for loading, and the loading and binding method is the same as that of the middle slot.

9. Before the rear conveyor is recycled, the rear tail beam inserts are all played out. First, the left and right sides of the rear conveyor are cleaned, and the maintenance of the old airside roof of the rear conveyor is checked to confirm that there is no hidden danger. Check the support of the upper section of the expansion section. When the support is good, pull out the middle pillar, and after the recovery passage is vacated, start recycling. If the roof support is found to be unreliable after extraction, it must be supported by the shed with the same specifications. .

10. During the disassembly and recovery period, the bracket must be properly supplied with liquid. A special person should check the integrity of the bracket. If there is any other situation such as leakage, it must be treated immediately to prevent the tail beam from falling.

11. When the rear conveyor is recycled, it can be divided into two sections for recycling (centered on the 60# bracket), that is, the upper section is top-down and the lower section is sequentially recovered from bottom to top.

12. When recycling the tail section of the machine, the wind tunnel back column winch can be used to cooperate with the guide pulley for recycling. The guide pulley is fixed on the mast of the 100# frame tail beam by using the new 40T link or wire rope buckle, and the space above the 60# frame is pulled out from the space of the 100# frame and dragged to the loading place. Loading and transporting away.

13. The tail conveyor and transmission part of the rear conveyor can be pulled by 5 tons of guide chain. After the recovery of the head section of the rear slide, the end bracket is recovered. After the lower top plate is maintained, the JH-14 type back column winch installed in the machine lane is used together with the guide pulley for recovery, and the guide pulley is made of a new 40T link or The wire rope rope buckle support column is fixed at the appropriate position of the side rail of the 1# transition frame tail beam, and is pulled out and transported in the machine lane. Loading and bundling methods are the same as before.

14, before the slide, hit # 60 was recovered in two frame beams at the end of a column or using a closure link bundle 40T Woods car stop is placed to prevent the above recovered frame # 60 when falling chute device, where the metal hanging The mesh piece separates the upper and lower sections to prevent the upper debris from slipping and hurting people after the recycling.

15. When pulling the equipment after pulling, no one should work or stay along the wire rope. The personnel must stand between the two brackets to observe the pulling condition of the equipment. If there is any problem, stop the pulling immediately, and then proceed.

16. When pulling equipment after pulling, it is strictly forbidden for personnel to enter or work at the tail beam of the bracket. In order to prevent the backward slip, the bracket and the rear slip link chain must not be dismantled in advance. It is necessary to disassemble one piece and transport one piece in order, and the dismantling and transporting should be coordinated. Each pull chute must not exceed 2 knots.

17. When the upper and lower sections are recycled at the same time, special personnel must be sent to observe the pulling condition of the equipment, and must be unified command and on-site supervision by the on-site team and the team.

18. After the recovery of the rear slide equipment, the upper shed beam and the single pillar are recovered, and two “#” shaped rafts are erected with the old sleeper in time, and the top sill is connected. The inner side of the raft is aligned with the top line of the 100# bracket tail beam, and the outer raft is aligned with the front end of the 100# bracket base. When recycling the upper shed beam and the single pillar, it should be recycled from the inside to the outside, and the body sill should be laid before the recycling. The principle of “first support and then return” should be strictly implemented. Reinvest the pillars after the connection.

Third, safety technical measures

1. All personnel involved in disassembly must be familiar with the structure, performance and working principle of the equipment. The dismantling work must be carried out reasonably. Do not hard-hook hard. After the equipment is disassembled, the bare shaft head and other parts must be taped to prevent damage.

2. In the whole construction process, a construction person in charge must conduct a unified command operation. The construction workers must concentrate their energies, otherwise they may not participate in the construction.

3. During the construction period, the tools and spare parts must be managed by a special person to avoid loss.

4. The main and auxiliary winches and other winches must have a special person to check the integrity of the wire rope. Every time it is lifted, it must be inspected once and recorded. The quality of the wire rope must comply with the relevant provisions of Chapter 8 of the Coal Mine Safety Regulations.

5. The main winch hook head and the flatbed truck must be connected with a special connector to ensure reliable connection.

6. When the auxiliary winch is lifted and loaded, the hook head and the equipment are connected by wire rope or horseshoe ring, and the connection must be reliable, otherwise it should not be lifted.

7. The winch driver must hold the certificate and drive according to the signal: the main winch is “one stop, two lifts, three release”, and the auxiliary winch is “one stop, four lifts, five release”. It is strictly forbidden to use shouting or swaying lights. Replace the signal. The signal is unclear and it is strictly forbidden to drive.

8. After the winch driver takes over the work, he must carefully check the integrity of the winch and the integrity of the fixed hook head. The winch must be firm and reliable.

9. When lifting equipment or loading, it is strictly forbidden for anyone to work, walk or stay within the operating range of the wire rope ropeway to prevent the rope from hurting people.

10. For objects over 100Kg, manual handling is strictly forbidden. If you need to adjust or carry it, you must use lifting tools.

11. During the construction process, no one should put tools or other things on the scraper or cable trough of the scraper to prevent the person from falling down.

12. Before lifting the loading, the construction personnel will stand at a safe and reliable place 5 meters after the lifting position. The signal worker will send out the preparatory signal. After the same driver signals the winch, the lifting signal can be sent, and other personnel are not allowed to send signals at will.

13. When lifting the equipment, the relevant provisions in the “Safety Technical Measures for Equipment Lifting” must be strictly observed.

14. All participating construction personnel must carefully study this safety technical measure, otherwise they may not participate in the construction.

15. During construction, special personnel must check the safety of the coal wall and the roof. If abnormalities are found, take measures to deal with them immediately, and continue to work after handling safety.

16. Before the main and auxiliary winches are used, the solid and reliable full-section isolation fence must be supported by the single-pillar and steel mesh in the winch chamber to prevent the rope from being injured after the rope is rebounded.