Slogan of special equipment

When the construction site is shut down for a long time, unsafe factors increase when all kinds of construction machines are reused, and workers' safety thoughts are not concentrated after the holiday. In addition, other aspects of management are easy to relax in the face of anti-epidemic, which can easily lead to safety production accidents caused by construction machinery. Therefore, the safety inspection and control of construction machines and tools should be done well when the construction site resumes work after the holiday.

According to the Regulations on Safety Inspection of Special Equipment, Technical Specification for Safe Use of Construction Machinery, Technical Specification for Safety of Gantry and Derrick Material Hoists and other laws, regulations and safety technical specifications related to the use of construction machines, the key points of safety inspection and control of construction machines in 1 1 construction site are summarized, which should be paid attention to when returning to work after holidays. 1 tower crane 1, the track foundation and concrete foundation of tower crane must be designed and checked before they can be used. Slope and drainage facilities should be built around the foundation and keep a safe distance from the foundation pit. 2. The disassembly and assembly of the tower crane must be equipped with the following personnel: the project leader, the safety leader and the mechanical management personnel who hold the safety production assessment certificate; Installation and disassembly workers, crane drivers, crane signalmen, cable workers and other special operators with construction special operation qualification certificates. 3. Dismantlers should wear safety protection articles, fasten their seat belts when working at heights, and be familiar with and conscientiously implement disassembly techniques and operating procedures. 4. Before jack-up, you must check the connection of various parts of the hydraulic jack-up system. During jacking, it is forbidden to rotate the arm and perform other operations. 5. After the tower crane is installed, the overall technical inspection and adjustment should be carried out, and it can only be delivered after passing the inspection in stages and the whole machine. Under the condition of wireless load, the verticality deviation between the tower and the ground is ≤4/ 1000. 6, the metal structure of tower crane, track and reliable shell of all electrical equipment should have reliable grounding device, grounding resistance should be 4 Ω or less, and set up lightning protection device. 7. Before operation, we must know the surrounding environment, roads, overhead wires, buildings and components' weight and distribution, and so on and so forth. During tower crane operation, there shall be no obstacles within the lifting and slewing radius of the boom, and the safe distance from the overhead transmission conductor shall comply with the regulations. 8, tower crane commanders, operators must hold relevant certificates, homework should strictly implement the commander's signal, such as signal is not clear or wrong, the operator should refuse to perform. 9, tower crane slewing, luffing, walking and hook lifting before action, the operator should check that the power supply voltage should reach 380V, the range of change is ≤+20v/- 1v, and the start control switch should be at zero before power transmission, and should send out sound signals. 10, tower crane boom amplitude limiter, walking limiter, torque limiter, hook height limiter and various travel limit switches and other safety protection devices must be safe, complete, sensitive and reliable, and shall not be adjusted and disassembled at will. It is forbidden to replace the operating mechanism with a limit device. 1 1, tower crane machinery shall not overload and lift objects of unknown quality. 12. In case of sudden power failure, immediately set all controllers to zero, turn off the power switch, and take measures to safely lower the heavy objects to the ground. It is forbidden to lift heavy objects and hang them in the air for a long time. 13, when lifting heavy objects, the binding should be stable and firm, and sporadic items shall not be hung or piled up on the heavy objects. Sporadic materials and objects must be tied firmly with hanging cages or wire ropes before lifting. It is forbidden to use tower cranes to pull cables, hang cables and lift heavy objects buried underground or condensed on the ground. 14, in case of strong winds of magnitude 6 or above or bad weather such as heavy rain, heavy snow and fog. The open-air operation of tower crane should be stopped. When working in or after rain and snow, try hoisting first, and then work after confirming that the brake is sensitive and reliable. 15. When the lifting load reaches 90% or more of the rated lifting weight of the tower crane, the heavy object should be lifted no more than 20cm from the ground, and then the following inspections should be carried out: the stability of the crane, the reliability of the brake, the stability of the heavy object and the firmness of the binding, and the lifting can be continued only after it is confirmed to be safe. 16, the vertical speed of heavy objects should be even, and sudden braking is strictly prohibited. The left and right rotation should be smooth, and there should be no response before the rotation stops. Non-gravity descending tower crane is forbidden to descend freely with load. 2 Earth-moving machinery 1, before the operation of earth-moving machinery, check the position and direction of clear and dark settings (wires, underground cables, pipes, tunnels, etc.). ), and use obvious signs to identify. It is forbidden to work within the distance of cable1m. 2, mechanical operation, it is forbidden to contact the rotating parts and maintenance. When repairing (welding, riveting, etc.). ) working device, should be reduced to the lowest position, hanging part should be padded with boards. 3. In case of any of the following circumstances during the construction, the operation shall be stopped immediately, and the construction can be continued only after the operation safety conditions are met: (1) When the soil in the filling and excavation area is unstable and in danger of collapse; (2) sudden climate change, heavy rain, water level surge or flash floods; (3) When a blasting signal is issued in the blasting warning zone; (4) When water and mud gush out from the ground, traffic jams or ramps slip due to rain; (5) When the working face clearance is insufficient to ensure safe operation; (6) When the construction signs and protective facilities are damaged and fail. 4, cooperate with the mechanical operation of bottom cleaning, leveling, slope repair and other personnel, should work outside the radius of mechanical rotation. When it is necessary to work within the radius of gyration, stop the mechanical gyration and brake before operation. 5, bulldozer before driving, it is forbidden to someone standing on the crawler or shovel bracket, there should be no obstacles around the machine, after confirm the safety, can start. 6, scraper operation, it is forbidden to anyone up and down the machine, transfer objects and sitting on a bucket, mop or rack. During non-operation driving, the bucket must be hung on the transportation driving position with a locking chain, and no part of the machine is allowed to carry people or inflammable and explosive articles. 7, frog rammer tamping machine operation, should be one person to help ram, one person to pass the cable, and must wear insulating gloves and shoes. Wire delivery personnel should follow the rammer or adjust the cables on both sides. The cables shall not be twisted or twisted, and shall not be tightened, with a margin of 3~4m. 8, electric impact rammer should be equipped with leakage protection device, the operator must wear insulating gloves and shoes. During operation, the cable should not be pulled too tightly, and the installation of the thread head should be checked frequently to avoid looseness and leakage. It is forbidden to work in the rain. 9, pneumatic rock drill is strictly prohibited in the waste hole drilling and riding operations, drilling, drill pipe and drilling center line should be consistent. It is forbidden to drill holes within 5m of blast holes filled with explosives. 10, the cable of electric rock drill shall not be laid in water or through metal pipe. Signs should be set up on the construction site to prohibit machinery and vehicles from passing through cables. 3 construction elevators 1. Construction elevators used in construction sites must be qualified products identified by competent departments at or above the provincial, municipal and autonomous regions. 2. Flammable, explosive and other sundries shall not be piled up within 5m around the construction elevator, and trenches and slots shall not be dug within this range. A solid protective shed should be built within 2.5m of the elevator. 3. It is forbidden to use the derrick, support and floor platform of the construction elevator to hang scaffolding, construction pipes, ropes, banners and other items unrelated to the elevator. 4, the driver must be in good health, and after professional training, and passed the examination, obtain the mechanical operation certificate issued by the competent department, can operate independently. 5, often check whether the foundation is in good condition, whether there is a sinking phenomenon, check whether the verticality of the guide rail frame meets the requirements of the factory manual, if there is no provision in the manual, then check according to the height of 80m ≤25mm and the height of 100m ≤35mm. 6, check the limit safety device, after the inspection, lift the ladder cage to the ground 1m to stop and check whether the braking meets the requirements, and then continue to test the floor platform, protective door, upper limit and front and rear threshold, and observe the operation situation, and then formally put into production. 7. If special materials, such as molten asphalt, toxic substances, strong acids, solutions, large parts, flammable items, etc., are carried, the technical department must formulate safety measures in conjunction with relevant departments such as safety and maintenance, and disclose them to the operators before carrying them. 8, handling goods should be evenly distributed, to prevent partial load, materials shall not exceed the ladder cage. 9. When running to the top and bottom, parking with limit is not allowed (except for inspection). 10. Stop the operation under the following conditions: bad weather, such as thunderstorm, gale of magnitude 6 or above, fog, ice on the guide rail, etc. The lights are unclear and the signal is unclear; Mechanical failure, not completely eliminated; Wire rope broken wire wear exceeds the specified value. 4 Material hoist (gantry crane, tic-tac-toe crane) 1, reversible hoist should be selected, and friction hoist is not allowed for overhead hoist. The edge of the drum must be equipped with a protective device to prevent the wire rope from falling off. 2. When using rope clips, fix the end of the wire rope. The rope clips should match the rope diameter, the number should be ≥3, and the spacing should be ≥ 6 times the diameter of the wire rope. The rope clamping saddle is placed on one side of the stressed rope, and the rope clamping cannot be staggered back and forth. 3. The hoist should have the following safety protection devices and meet their requirements: safety parking device; Broken rope protection device; Floor stop railing (door) hanging basket safety door; Protective shed for feed inlet; Upper limit stops; Lower limit limiter; Emergency breakpoint switch; Signal device; Buffer area; Overload limiter; Communication equipment. 4, hoist foundation should have drainage measures. Within 5m from the foundation edge, measures must be taken to ensure the stability of the frame when digging trenches or carrying out construction with large vibration. 5, attached to the wall frame and frame body and buildings, should adopt rigid connection, and form a stable structure, shall not be connected with scaffolding, steel wire binding is strictly prohibited. 6. The cable wind rope should be symmetrically arranged on the same horizontal plane with the transverse connectors at the four corners of the frame, so that the horizontal component caused by it in the structure is in a balanced state. 7, material hoist experience qualified rear can use, operation should comply with the relevant safety technical standards, norms, procedures and instructions of the relevant provisions.

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