Units using electric single-girder cranes shall perform the self-inspection of the cranes in accordance with the relevant requirements of the " Regulations on the Use of Lifting Machinery" and the " Regulations on Periodic Inspection of Lifting Machinery ". Our editor will share with you the annual inspection items and basic requirements of electric single-beam cranes.
| Use unit name | Utilizing unit's unified social credit code |
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| Security manager | contact number | |||
| Use registration certificate number | Put into use date | |||
| Use location and number | Equipment name | Electric single beam crane | ||
| Specification model | Product factory number | |||
| Manufacturing (renovation) unit | Date of manufacture (reconstruction) | |||
| Self-inspection conclusion | The crane has been self-inspected annually in accordance with the requirements of TSG Q5001 "Lifting Machinery Use Management Rules" and TSG Q7015 "Lifting Machinery Periodic Inspection Rules". It is operating in good condition and all projects meet the requirements of relevant standards and design, use and maintenance instructions. , Pass the self-inspection. | |||
| Remark | ||||
| Security manager (signature):
year month day
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Annual inspection items and basic requirements of electric single-beam cranes
| الرقم التسلسلي | Check item | Check basic requirements | Self-check result | |
| 1 | Working environment and visual inspection | 1. The nameplate on the crane, the rated lifting weight mark of the obvious part, the red, yellow and black safety color of the dangerous part should be clear, eye-catching, complete and correct; 2. The moving part of the crane and the building, facility, power line The safety distance should comply with relevant standards such as GB6067.1; 3. The overhaul platform used for overhauling the electric hoist should be intact (including the mobile platform); the passage to the driver’s cab should be safe and convenient for personnel to reach, and its ladders, railings and walking The platform should be undamaged; | ||
| 2 | Metal structure | 1. Check the condition of the main beam, end beam and other metal structures of the crane. If there is overall instability, severe corrosion, plastic deformation and cracks, it should be repaired or scrapped directly; 2. There are no obvious visible welding defects in the connection welds of the metal structure ; Bolt or rivet connection shall not be loose, lack of parts, damage and other defects; high-strength bolt connection shall have sufficient pre-tightening torque; 3. The deflection of the main beam shall not affect the normal operation of the crane (including no climbing Difficulties and self-slipping, etc.); the deflection value of the main girder in the middle of the span under the rated load should not exceed S/700 under the horizontal line (S is the span of the crane). | ||
| 3 | track | There should be no obvious loosening, no cracks, severe wear, etc. between the rails of carts and trolleys, and the gap between the rail joints and the height difference of the rail should meet the requirements; there should be no obvious reverse side phenomenon on the lower wing plate of the I-beam steel rail. | ||
| 4 | Main parts | General requirements | (1) Check the main components (including spreaders, wire ropes, pulleys, open gears, wheels, drums, chains, etc.) in accordance with relevant safety technical specifications and corresponding standards for wear, deformation, defects, and whether they meet the scrap requirements . (2) The parts, safety protection devices, electric hoists, electrical components, lighting equipment, etc. on the explosion-proof crane need to be in compliance with the explosion-proof requirements, and not lower than the explosion-proof level and temperature group of the whole machine; the explosion-proof crane should prevent the wire rope from falling out of the groove Of non-sparking materials. | |
| 5 | Spreader | Hangers such as hooks, electromagnetic chucks, grabs, and spreader beams hang firmly and reliably; hooks are equipped with anti-decoupling devices in accordance with regulations (except for those who cannot approach the hooks) and are effective; hooks should not be repaired by welding. | ||
| 6 | Rope guide | The rope guide should effectively lay the rope in the entire working range, and there should be no defects such as jamming and missing parts. | ||
| 7 | سلك حبل | (1) The wire rope used by the crane matches the pulley and drum to meet the requirements of GB 6067.1, and the new wire rope needs to be checked for its ex-factory qualification certificate. (2) The rope end of the steel wire rope should be fixed firmly and reliably. There should be no less than 3 rope end fixing plates on the electric hoist . In addition to the number of turns of the fixed steel wire rope, at least 2 rounds of the steel wire rope on the drum shall be kept as a safety ring. (3) The rope end fixing device on the drum has anti-loosening or self-tightening performance; when fixed with a metal compression joint, the joint has no cracks; when fixed with a wedge, the wedge sleeve has no cracks and the wedge is not loose; use a rope clamp When fixing, the rope clamps are installed correctly, and the number of rope clamps meets the relevant requirements; (the explosion-proof crane should not have broken wires, and the cranes that lift hot metal, molten metal or dangerous goods should be halved). | ||
| 8 | Security full security protection و prevention protection means opposite |
الفرامل | Special requirements for cranes for lifting molten metal : (1) When the rated lifting capacity is greater than 5t and less than or equal to 16t, in addition to the working brake, a safety brake should be installed on the low-speed level of the electric hoist; (2) When the rated lifting capacity is When the weight is less than or equal to 5t, in addition to the working brake, a safety brake should be installed at the low speed level, or the electric hoist should be designed at 1.5 times the rated lifting capacity; (3) The electric hoist with high temperature insulation function should be selected; (4) ) The working level of electric hoist is not lower than M6. |
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| Parts inspection: (1) The brake parts are free of defects such as cracks, excessive wear, plastic deformation, missing parts, etc. (The brake pads are worn out to 50% of the original thickness or scrapped when the rivets are exposed). (2) When the brake is opened, there is no friction between the brake wheel and the friction plate. When the brake is closed, the contact between the brake wheel and the friction plate is even, missing parts and other defects. The hydraulic brake has no oil leakage. (3) There is no oil leakage from the pusher of the brake. | ||||
| 9 | الارتفاع المحدد | (1) Lifting height limiters should be effective; (2) Cranes for lifting hot and molten metals should be equipped with double height limiters with different forms of ascending positions and capable of controlling different circuit breakers; (3) Lifting When the tool may be lower than the lower limit position, or when the lifting height of the crane for lifting hot and molten metal is greater than 20 meters, the lowering depth limiter should be set and the work is effective. | ||
| 10 | Other safety protection and protective devices | (1) Check whether the lifting weight limiter is reliable and effective; hoisting machinery with electric chain hoist as the lifting mechanism can use the safety clutch to achieve the overload protection function; (2) The stroke limit of the cart operating mechanism The device should be reliable and effective; (3) The action of the emergency power off switch should be reliable and effective, and can cut off the main power supply of the crane; (4) The running mechanism of large and small vehicles or the buffer and end stop at the end of the track should cooperate well. The end stop should be firmly fixed, and both sides should contact the buffer at the same time; (5) The electrical interlock protection device on the crane should be effective, when any door is opened, all the crane mechanisms should not work; (6) Operation Where personnel or spreaders can easily touch the sliding line, a conductive sliding line protection plate should be installed and the protection is effective; (7) The protective cover of the movable parts exposed on the crane that may hurt people, and the electrical equipment of the crane operating in the open is rain-proof The cover should be complete. The insulation device of the crane for lifting molten metal should be intact. | ||
| 11 | الكهربائية gas line system |
Electrical equipment components | Electrical facilities and components should be complete and complete; mechanical fixation should be firm, without looseness, transmission parts should be flexible and free from jamming; insulation materials should be good, without damage or deterioration; bolts, contacts, brushes and other connecting parts, electrical connections should be reliable , No bad contact. Whether the explosion-proof, insulated, and molten metal crane electrical equipment and its components are compatible with the high temperature, explosion-proof and insulation level of the working environment, and have protective measures | |
| 12 | Feeder | The slip line should be straight and the conductive contact surface should be flat; the current collector should reliably contact along the entire length of the slip line and slide freely and unimpeded. The flexible cable suspension device should move along the slide flexibly, without jumping, and without jamming, and its retractable device should work flexibly and without damage. | ||
| 13 | Insulation resistance | When the rated voltage is not more than 500V, it is not less than 0.8MΩ in the general environment and not less than 0.4MΩ in the humid environment. | ||
| 14 | Grounded | (1) All the normally non-charged metal shells of the electrical equipment on the crane should be reliably connected to the grounding protective conductor; (2) When the TN grounding system is used, the grounding resistance of the neutral line repeated grounding is not greater than 10Ω; when the TT grounding system is used, the crane The product of the grounding resistance of the metal structure and the operating current of the leakage protector should not be greater than 50V. | ||
| 15 | Electrical protection device | (1) Short-circuit protection: At least one level of short-circuit protection should be set up, and the automatic circuit breaker or fuse should be intact; (2) Loss of voltage protection: When the power supply is interrupted, it must be able to automatically disconnect the main power circuit; when the power supply is restored, it will not pass Manual operation, the main power circuit cannot be turned on by itself; (3) Zero protection: When the mechanism motor is controlled by a controller that cannot be automatically reset, the zero protection should be effective; (4) Phase failure protection: check for phase failure protection Whether the phase failure protection of the power supply of the lifting machinery is effective. | ||
| 16 | Manipulator | (1) The operating direction of the operating mechanism should be consistent with the operating direction of each mechanism of the crane; (2) The interlocking device between the operating devices should be effective. When one of the operating devices controls the action of the crane mechanism, the other operating devices should not be able to Function; (3) The load-bearing rope of the control cable of the portable button panel shall be free from breakage and damage, and the shell shall be firm and free of defects. | ||
| 17 | No-load test | After electrifying and passing the test of each safety device, carry out no-load hoisting and running tests. Each control operation function works normally and the control is flexible; the operation is stable, the operation of each mechanism is free of abnormal noise, and the large and small cars have no track gnawing along the full length of the track. | ||
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