Chapter I
First, in order to strengthen the enterprise crane safety management, ensure safety in production and the normal operation of lifting machinery, lifting to improve work efficiency, to meet the needs of production, formulated procedures.
Second, the regulations applicable to companies to design, manufacture, installation and use of lifting machinery, including overhead cranes, gantry cranes , tower cranes, overhead cranes, jib cranes, derrick cranes, railway cranes, truck cranes, crawler cranes, electric hoist cranes and forklifts, jacks and winches. Does not apply to water cranes, lifts, excavators, loaders, transport and underground use lifting machinery.
Third, there is lifting machinery enterprises, should the director or chief engineer under the leadership of a certain department or designated staff responsible for the management of lifting machinery.
Chapter II General requirements for lifting
Fourth, corporate design, manufacture crane shall comply with the requirements of this regulation. Lifting machinery manufacturing factory in the batch manufacture of a variety of lifting machinery, should the main design drawings and related technical data sent to the local provinces, municipalities and autonomous regions labor departments for the record, the product is shipped, safety accessories should be complete, should play heavy machinery parts indicate the apparent maximum weight, along with complete technical documentation and instruction manual.
Five of the newly installed, homemade own use, after major overhaul or change the performance of lifting machinery, it should be in the enterprise security technology sector participation, through acceptance procedures, demonstrate compliance with requirements of this regulation, before use.
Six, lifting machinery, lifting machinery construction and erection of the foundations, housing, track and other buildings, must be able to run securely and safely withstand the maximum load, and to ensure that they have sufficient stability to prevent dumping , fall, cranes balance iron and other materials shall be installed so balanced solid and reliable, it will not be displaced, off or change the weight of the phenomenon. Traveling crane track, its slope and gauge shall meet the design requirements. Truck cranes and crawler cranes working on the ground should be flat, not in the mud or without compaction and ground work, mast crane cable, the pile should be solid.
VII performance of the crane can not be arbitrarily changed, if necessary to increase the maximum lifting crane, lifting speed is accelerated, extending cantilever span is very important to change other properties, to checking its strength, rigidity, stability and power, and the weak part of the take the necessary reinforcement measures.
Eight, cranes workplace have sufficient lighting and smooth lifting channels and should work with nearby devices, keeping a safe distance from the building so that it will not collide at runtime.
Nine, cranes overhead transmission lines below shall work in the overhead transmission line through the boom should fall to avoid collision. In overhead transmission line side work, whether in any case, boom, rope or heavy with overhead transmission lines, etc. The closest distance should not be less than the following table: Transmission Lines 1-20 kV voltage 1 kV 65-110 kV 154 kV and 220 kV transmission line to allow the closest distance (meters) 1.52456.
Ten, cranes electrical and boiler equipment shall meet the electrical safety and boiler safety requirements, in Ex workshop, crane electrical equipment shall also meet explosion-proof requirements.
Chapter III safety devices and labor protection facilities
Eleven, mobile cranes and winches must have a clear sound speakers, such as a bell or siren signaling devices.
Twelve, crane winch mechanism and motor movement, rotation and luffing mechanism must be equipped with brakes. Lifting molten metal molten steel or other motorized winch is equipped with two sets of institutions should be able to withstand all of the starting weight of the brake.
Thirteen, a variety of cranes ladders, platforms, walkway and gantry beam side should have no less than one meter below the protective railing should have baffles. Dangerous parts of the crane gear should have shields or protective railings. Straight ladder and tilt angle greater than 75 degrees inclined ladder, its height over 5 m, should be set curved protective circle.
Fourteen, electric hoist crane must have a limiter and stroke limiter. Hoisting limiter should be elevated to the pulleys in the hoist limit of 200 mm from the past, can automatically stop, conditions permitting, this distance can be extended. Stroke limiter should enable the crane when approaching end of the track, or play the same track processing unit closer to each other, or when the boom to the maximum angle, carried to the highest position, it can automatically stop.
Fifteen, electric crane on a metal frame, rail, electrical equipment, metal outside, or other uncharged metal parts must have a protective earth.
Sixteen, bridge cranes and gantry cranes, by cab or room Jiazou station enters the bridge on the door, there should be automatic interlocks to ensure that when a person enters the auto power bridge, tower cranes, if the driver's cab located in the rotating part, should be equipped with automatic interlock device so that the passage into the cab door is opened, the rotating part is stopped.
Seventeen, bridge cranes with the necessary repairs in addition to platform, should be provided with adequate room for the driver to use the kind of up and down ladders, platforms. Workers frequently in the upper and lower crane workshop, should be set up to take the stage for the upper and lower platforms.
Eighteen, and has the power sliding bridge crane boom hoist line, slide the power supply line should have bright colors, to distinguish it, in order to prevent electric shock when people up and down, up and down if the crane platform near the power slip line, you should set guard. Overhead cranes and carts up and down platform is best not to slip line supply ipsilateral; bumped to prevent the rope swing power slip line, slip lines near the side of the crane shall be provided protection bar, if there is built in a factory span double crane, crane power the next layer along the entire length of slip lines, setting protection bar.
Nineteen, for high temperature operation of the crane, cab should have insulation, warm facilities, lifting steel or other molten metal when the cab should have splash burns and fire prevention facilities.
Twenty, with a crane cable reel, cable drum shall be fitted to ensure the cable neatly coiled device to prevent breakage due to random lines and power cables in the electrical connections from other parts shall be securely fixed , and add protection to prevent collision.
XXI boom tilt angle as the size of the change from the weight of the cantilever crane shall be fitted from the weight indicator.
XXII, mobile cranes on rails, in addition to railway cranes, the terminal settings must be the end of the column in the track, motorized buffers should also be set.
Xxiii, open work crane cab should have rain and sun of the facility. Traveling on the track on the ground crane open air, there should clamp rail clamp, in order to increase its stability, prevent the maximum freedom of movement when hit or wind blown.
Twenty-four, winches, jacks and winches, there should be an automatic braking performance, so that the weight can stay at any height.
The fourth chapter of the wire rope, chains, hooks requirements
XXV, companies use wire rope, chains, hooks and rings should have a manufacturing unit of the technical documents used as a basis; if not, it should be tested to identify its performance specifications after being used.
XXVI, using the wire rope and chain, should not exceed the maximum allowable tension, to prevent the break. Each wire rope and chain tension should be the maximum allowable by the following formula:
= Actual maximum allowable tensile breaking force
Safety factor
XXVII, lifting wire rope safety factor should be based on the frequency of use and other technical conditions. Mobile crane wire rope, the safety coefficient is generally not less than 5.5, a few infrequently used shall not be less than 5, the use of frequent and smelting, casting of not less than six, manual crane wire rope, the safety coefficient is generally not less than 4.5. Boom lift for use as a mast crane wire rope and wire rope cable, the safety factor of not less than 3.5. With a small hook with a small ring for hanging rope, the safety factor of not less than 6.
Xxviii, wire winding drum, pulley, rope diameter shall be the diameter of a certain proportion, to prevent premature failure of wire rope, this ratio, according to the type of crane, the frequency of use, and so forth. Railway cranes, crawler cranes, as well as for other types of temporary construction cranes, generally not less than 25 times the rope diameter, and frequently used for smelting, casting of not less than 30 times, manual crane is not less than 16 times.
Twenty-nine, mobile cranes for lifting chains with welded safety factor of not less than six without sprocket, a chain of not less than 8, the installation of roller chain sprocket of a diameter not less than the diameter of round steel chain link 30 times. Manual welding chain crane safety factor, not the chain, not less than 3; sprocket, shall not be less than 4.5; winding drum or sprocket diameter not less than the diameter of the chain is not round 20 times. With a small hook, small loop for hanging with welding safety factor shall not be less than 5. Tied with a chain for welding safety factor shall not be less than 6. Plate chain safety factor. Not less than 5.
Thirty, wire rope sling, shall be fitted with iron rings; plaiting section with a length of not less than 15 times the rope diameter, and shall not be less than 300 mm; linked together with the clamp into the noose, clips of not less than three . Lifting steel cord connection, it should be interconnected with a rope, wire connection of the winding drum can or pulley contacts. Fixed rope crane parts, should be used clips, wedges, and other reliable way to connect. When the weight down to the lowest position, the rope left on the drum shall be not less than two laps.
XXXI, rope burned or broken one, it should be replaced, the wire rope when its surface wear and corrosion resistance of the wire diameter is more than 40%, they should be replaced.
Rope lay length in a broken wire inside the roots reach the values listed in the following table, it should be replaced. In special cases, must continue to use, the load should be reduced accordingly, increase the safety factor, but does not exceed the number of filaments broken irregular safety factor in the table below as "7 or" allowed when the number of filaments.
Rope structure
Root of the number of broken wires × 19 6 shares 6 shares core wire + L + L × 37 wire core 6 × 61 shares 18 shares core wire + L + L × 19 wire core
Safety factor interaction interactive twist twisted twisting of the interactive system for interactive twist
6 The following 12223636
From six to 714,263,838
7 above 16,304,040
Lifting steel or other fused, red hot metal and acid, explosive, flammable rope, in the application when the table values should be halved.
Xxxiii, welded chain, if deformed, badly worn or cracked, it should replace the chain ring or chain.
Thirty-four, hooks and rings should be used forging, stamping, or method of manufacture of laminated steel, and should be based on conditions of work, to set the hook or clip Insurance guard to prevent decoupling, easy to hook heavy rotation should be mounted on ball bearings. Hooks and rings are subject to permanent deformation or cracks, it should be scrapped replaced. Hook section height wear up to 10%, it should be re-checking to make sure to replace or reduce the load use.
Thirty-five, often used for lifting steel or other fused, red hot metal and other substances chains, hooks and rings, should regularly be annealed to prevent brittle fracture.
Chapter safe operation of the management system
XXXVI, with lifting machinery enterprises should establish and improve on lifting machinery maintenance, periodic testing, safety rules and shift other systems, and education-related personnel to seriously implemented. Along the railway line from the machinery or work on the railway, the operator should be familiar with railway traffic signals and related safety procedures.
Thirty-seven, enterprises shall register the enterprise cranes, detailed records of each crane specifications, performance and other relevant technical information, as well as all previous technical inspection, overhaul, changing the crane important properties and major accident situations, for examination.
Thirty-eight, machinery and equipment installed in the vicinity of the crane maneuver manipulated from the ground, shall designate the person responsible for a certain use. In addition to a, mobile cranes should normally be full-time drivers, and specify some hooks and command staff responsible for the work. Crane hook driver and responsible for commanding officers must be visual, auditory normal, specially trained and approved by corporate security technology department issued certificate after passing the examination, shall be allowed to operate independently.
Thirty-nine, the plant should provide command signals crane factory uniform, factory relevant personnel from other units, including the redeployment of personnel must be unified command signal in accordance with factory execution. In addition to working in the lifting of emergency danger that anyone can issue a stop signal outside, we can only command of a person responsible for directing crane lifting work.
Forty prohibit crane overload operation.
Forty-one, with the size of the boom tilt angle changes from the weight of the crane, at work, boom tilt angle and from the weight shall meet the design requirements.
Forty-two, with two cranes lifting a heavy object in the enterprise should be carried out under the direct leadership of the Chief Engineer, lifting rope should remain vertical when lifting, the load of each crane suffered not exceed the maximum weight.
Forty-three, cranes lifting heavy objects should be tied securely hung too smooth. When lifting, the interview should be hanging slightly off the ground, hanging heavy braking performance demonstrated good stability and cranes, and then continue lifting. Tied with sharp edges and corners of the heavy lifting, you should put the pads. Prohibit oblique hanging. Buried in the ground or hanging pull condenses on the ground, the things on the device.
Forty-four, cranes lifting heavy lifting channel should follow generally prohibited from man's head over to prohibit the heavy lifting on the station in person, with a weight hanging prohibit processing. Hanging heavy in the air longer allowed to always stay in the special case in which, for suspension of stay should prohibit all personnel to stand or pass under heavy loads. Crane hanging weights, drivers and commanding officers are not free to leave their jobs.
Forty-five, when the crane operation, the upper and lower personnel prohibited from engaging in maintenance work. Banned from a bridge crane bridge crane spans up to another, in addition to shut down for maintenance, the ban on bridge crane track leave. When the cantilever cranes, derrick cranes, railway cranes truck cranes, crawler crane work, the cantilever and the work area is prohibited to stand. The use of lifting electromagnet crane work area must be divided, it was prohibited in this area.
Forty-six, crane drivers, hook workers and maintenance personnel should be responsible for regularly checking their equipment and spreader to ensure safe operation, during maintenance, refueling and cleaning workers work, the crane should stop running, in the case of electric cranes should cut off the power, the crane stops working, the driver should be safe and secure crane parked in the specified place before leaving.
Chapter VI Technical Inspection
Forty-seven, enterprises for the lifting machinery, should be based on usage requirements for a year or two technical inspection. The new installation, after major overhaul or change the properties of lifting machinery, should be performed prior to use technical inspection.
Forty-eight, in the technical inspection shall inspect metal structures, a variety of moving country equipment, transmission, electrical equipment, safety devices, brake wire rope, chains, hooks, chains, pins and screws, etc. is intact, if installed properly and wear, etc., and the crane for load tests.
Forty-ninth, the crane for the static load test, the test weight should be lifted off the ground 100 mm suspended for 10 minutes to test the strength and rigidity of the crane frame. Static load test used heavy weight, for the newly installed after overhaul or change important properties of the crane, lifting weight should be 125% large; For periodic technical inspection of the crane, shall be the maximum weight of 110%. If the test found a permanent deformation of the framework should be reinforced or reduce scheduled repairs maximum weight before they can be used. Overhead crane in the trial, if found insufficient rigidity of the bridge, a great degree of flexibility disturbance, where the electric double-beam, is greater than the span of 1/700, electric single-beam, is greater than the span of 1/500, manual, span greater than 1/400, should also be reinforced through repairs or lower the maximum weight the original, and then used.
50 cranes dynamic load tests shall be carried out after passing the static load test, test, test weight should be hanging winch repeatedly move, rotate, or amplitude, in order to test the operation of the various parts of the crane, if not normal phenomenon, it should be replaced or repaired. Dynamic load test weights should be used for maximum weight of 110%.
Fifty-one, for new or tied with rope and chains hanging, shall also be static load test, according to the working frequency of at least once every six months after the test again. Test, should be 2 times the maximum weight when the load suspension for 10 minutes to verify that the cable is not broken or deformed wires of each chain link does not break or deformation, before they can be used.
Chapter VII Supplementary Provisions
Fifty-two, the relevant corporate departments as needed, in accordance with the provisions of this regulation, combined with the specific circumstances of each enterprise, the development of implementing rules and sent the same level of labor department.
Fifty-third, of the rules by the labor department is responsible for all levels of supervision and inspection of the implementation.
Fifty-four this regulation from the date of publication trial.
