What are the safety management regulations for commonly used construction machinery?

Common construction machinery safety management regulations are very important. Management regulations are formulated to better solve practical problems, and the handling of every detail is very critical. Zhongda Consulting will introduce to you the safety management regulations for commonly used construction machinery.

1. General provisions

1. Operators should pass the physical examination and hold a certificate to work. Students should operate under the guidance of a dedicated person.

2. Operators and cooperating workers must wear labor protection equipment as required during work. Long hair should be restrained and not exposed. Seat belts must be worn when working at heights.

3. Machinery must be operated correctly and reasonably used in accordance with the technical performance, load-bearing capacity and usage conditions specified in the factory instructions. Overloading or arbitrarily expanding the scope of use is strictly prohibited.

4. Various safety protection devices on machinery and automatic alarm and signaling devices such as monitoring, instructions, instruments, alarms, etc. should be intact and complete, and any defects should be repaired in time. Machinery with incomplete or failed safety protection devices shall not be used.

5. In places prone to danger such as power substations and distribution stations, generator rooms, and boiler rooms, fences and warning signs should be set up at the boundaries of dangerous areas. Non-staff members are not allowed to enter without approval.

6. In important operating areas such as excavators, cranes, pile drivers, etc., warning signs should be set up and on-site safety measures should be taken.

7. In places where machinery produces gases, liquids, dust, slag, vibrations, noise, etc. that are harmful to the human body, corresponding safety protection equipment and three waste treatment devices must be equipped.

2. Power and electrical devices

1. It is strictly prohibited to use the earth as the working neutral line, and it is not allowed to use the metal structure of the machine itself as the working neutral line. Each electrical protective grounding or protective zero point must be connected to the ground trunk line (or protective neutral line) with a separate ground (zero) line; it is strictly prohibited to connect several ground (zero) points in series in one ground (zero) line.

2. It is strictly prohibited to carry out live work or use scheduled shutdown time for electrical maintenance. Before maintenance, the power supply must be cut off and a warning sign "No closing, someone is working" must be hung on the power switch. A dedicated person should be responsible for putting up and taking down warning signs. In the event of personal electric shock, the power supply should be cut off immediately, and then emergency rescue can be provided to the person suffering from electric shock. It is strictly prohibited to come into direct contact with an electric shock victim before cutting off the power supply.

3. All kinds of power wires are strictly prohibited from being tied directly to metal frames. Power switches with a power capacity of more than 15kw in distribution boxes are strictly prohibited from using porcelain-based bakelite switches. Motors above 4.5kw shall not be started directly with a knife switch. All kinds of knife switches should use static contacts to connect to the power supply and movable contacts to connect to the load. Reverse wiring is strictly prohibited.

3. Lifting and Hoisting Machinery

1. Commanders must hold certificates to work, and should cooperate closely with operators during operations and execute prescribed command signals. Operators should operate according to the signals from the commander. When the signals are unclear or wrong, the operators can refuse to execute.

2. Safety protection devices such as the crane's amplitude indicator, torque limiter, lifting weight limiter and various travel limit switches should be intact, sensitive and reliable, and should not be adjusted or removed at will. It is strictly prohibited to use limiters and limiting devices to replace the control mechanism.

3. When the crane is operating, no one is allowed to stay, work or pass under the boom and heavy objects. It is strictly forbidden to use cranes to transport people.

4. It is strictly prohibited to use a crane to pull, tilt or lift heavy objects buried underground or solidified on the ground or other objects of unknown weight. Concrete components or formwork poured on site must be loosened before lifting.

5. If the lifting heavy object is suspended in the air for a long time and a sudden failure occurs during the operation, measures should be taken to lower the heavy object to a safe place, and shut down the engine or cut off the power supply for maintenance. In the event of a sudden power outage, , all controllers should be set to zero immediately, the main power switch should be turned off, and measures should be taken to lower the heavy objects to the ground.

6. The disassembly and assembly of the crane must be carried out by a professional team that has obtained the disassembly and assembly qualification certificate, and technical safety personnel should be present for supervision.

7. It is strictly forbidden to overcrowd the special elevator for manned cranes, and its rope-breaking protection device must be reliable. When the crane is operating, it is strictly prohibited to operate the elevator. When the elevator is out of service, it should be lowered to the bottom of the tower and should not be suspended in the air for a long time.

8. For luffing jib and unattached self-elevating tower cranes, placards are not allowed to be hung on the towers.

9. The wire ropes on the winch drum should be arranged neatly; when they overlap or are wound diagonally, the machine should be stopped and rearranged. It is strictly forbidden to pull the wire ropes with hands or feet during rotation. No one is allowed to cross the working hoisting wire rope.

10. The installation and disassembly of construction elevators must be carried out by a professional team with disassembly and assembly qualification certificates, and operated and maintained by professionals with operating certificates. After the elevator is constructed, the technical person in charge of the enterprise shall work with relevant departments to conduct a comprehensive inspection on the quality and accuracy of the foundation, wall brackets, and lift erection and installation. Technical tests (including drop tests) shall be conducted according to prescribed procedures. After passing the test, the , before it can be put into operation.

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