Job conditions Article 1 The hydraulic support personnel must be familiar with the performance and structural principle of the hydraulic support, hydraulic control system, operating procedures and roof control methods of the working face, and be able to maintain the hydraulic support according to intact standards. Only after passing the training and examination can they take up their posts. Article 2 the safety regulations, after the coal winning machine starts, it must be moved in time. When the hanging distance between the support and the shearer exceeds the operation procedures or roof caving or spalling occurs, the shearer should be stopped. Article 3: the reasonable height of the bracket must be mastered: the maximum height of the bracket shall not be greater than the maximum use height of the bracket; The minimum support height shall not be lower than the minimum use height of the bracket. When the actual mining height of the working face does not meet the above requirements, the monitor should be reported to take measures. Article 4. It is strictly forbidden to disassemble and inspect the column, jack and valve group underground. When replacing the whole block, the cylinder block should be shrunk to the shortest possible; When replacing the rubber hose and hydraulic components of the valve block, it must be carried out in a "no pressure" state. Article 5. Wear a dust cap when removing and replacing parts. It is forbidden to point high-voltage exposure at human body. Article 6 the standby hydraulic hose, valve group, hydraulic cylinder, pipe joint, etc. It must be plugged with a special plug and cleaned with emulsion when it is replaced. Article 7. When repairing the main road, the emulsion pump must be stopped and locking measures must be taken, and the check valve should be worn at the previous pressure. Article 8 it is forbidden to remove and adjust the safety valve on the bracket at will. Article 9 The moving frame must be carried out in the order specified in the operating procedures, and it is not allowed to adjust or operate in multiple positions without authorization. Article 10. When using adjacent frames to move frames, you should stand in the previous frame and operate the next frame. The frame must stand in a safe place and face the coal wall when operating. It is forbidden to put your body into the coal baffle of scraper conveyor or operate at the front end of pedal hydraulic support base. Article 1 1 When moving the frame, there shall be no other personnel working below and in front of it. When moving the end support and transition support, it is necessary to operate after other personnel have evacuated to a safe place. Article 12. When the moving frame is blocked, the reason must be found out, and forced operation is not allowed. Article 13 must ensure that the support is closely connected to the top and the initial supporting force meets the specified requirements. When the roof is broken, it must be supported in advance. Article 14 When dealing with roof caving above the support, in addition to observing this regulation, it is also necessary to operate in strict accordance with the established safety measures. Article 15. When the support lowers the column, moves the support and puts coal, it is necessary to turn on the spraying device to spray synchronously. Operation Preparation 16 Prepare tools such as wrenches, pliers, screwdrivers, sleeves, hammers, and spare parts such as U-pins, high and low pressure pipes, joints and sealing rings. Article 17. Check whether the support is skewed, upside down and bit, whether the front end of the support and the support are in danger of roof caving and spalling, whether the contact between the top beam and the roof is close, whether the support spacing is in line with the regulations, whether the support is in a straight line or shaking, and whether the working conditions of the top beam and the cover beam are normal. Article 18: Check whether the structural members have top beams, shield beams, side guards, jacks, columns, push rods, base boxes, etc. Whether there is welding, fracture or deformation, whether the connection falls off, whether the screw is loose, stuck and twisted. Article 19. Check whether the hydraulic part, high and low pressure hoses are damaged, squeezed, twisted, tensioned and broken, whether the valve of the immersion group is leaking, whether the operating handle is complete, flexible and reliable, and placed in the middle stop position, whether the pipe joint is broken and whether the U-shaped pin is missing; Whether the connection between jack and bracket and scraper conveyor is firm (soft connection is strictly prohibited). Article 20. Check whether the cable trough (coal baffle) is deformed, whether the cables, water pipes, lighting lines and communication lines in the trough are well laid, whether the coal baffle, coal shovel and connection are firm, whether the chute is unblocked and whether the shearer can pass smoothly; Whether the lighting, signal locking, sprinkling and spraying devices are complete, flexible and reliable. Article 2 1. Check the paving surface, whether the paving quality affects the moving frame, and whether the connected wire connector will hurt people; Whether the anti-skid anchorage device of large slope working face, end transition support and scraper conveyor meets the quality requirements. Article 22 the caving face should also check whether the rear conveyor is moved to the correct position. Article 23 the existing problems, should promptly report to the monitor; If the support is likely to tilt, fall or bite, which will affect the control of the roof, necessary jacks, short-section anchor chains or single props should be prepared for adjustment and correction in the next step of moving the support. Operation sequence Article 24 Normal frame moving operation sequence: 1. Retract the telescopic beam, fender and side fender. 2. Operate the rotary jack of the front probe beam, lower the front probe beam and avoid the obstacles in front. 3. Lower the column so that the top beam is slightly away from the roof. 4. When the bracket is movable, immediately stop the column from descending and move the bracket to the specified interval. 5. Adjust the frame, so that the jack and scraper conveyor are vertical, the bracket is not skewed, the center line conforms to the regulations, and the whole working face bracket is arranged in a straight line. 6. Adjust the balance jack while lifting the column, and keep the top beam in close contact with the top plate for about 3-5 seconds, so that the support can reach the specified initial supporting force. 7. Extend the telescopic beam to make the baffle lean against the coal wall, and extend the side baffle to make it close to the adjacent lower support. 8. Pull all handles back to the "zero" position. Article 25. When crossing fault, old roadway, broken roof zone and high pressure, the sequence of moving frame is 1. Support in time or in advance according to safety technical measures to shorten the exposure time and reduce the exposed area of the roof as much as possible.
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