Specific scope of examination content for crane operators (Q1, Q2)

For lifting machinery operators, the code Q1 represents the installation and maintenance of lifting machinery, and Q2 represents the electrical installation and maintenance of lifting machinery. Both types of operators need to pass an examination certificate to take up their posts. The editor will share with you the specific scope of the exam content for crane operators (Q1, Q2).

1. Theoretical knowledge of hoisting machinery installation and repair personnel

The theoretical test, the proportion of each part of the content is as follows:

(1) Professional basic knowledge accounts for 30%,

(2) Safe use and operation knowledge accounted for 50%,

(3) Knowledge of laws and regulations accounts for 20%.

1. Basic professional knowledge

1.1 Basic knowledge of mechanics

Including the basic knowledge of the concept of force, the three elements of force, the composition and decomposition of force, torque and couple.

1.2 Basic knowledge of commonly used materials

Including basic knowledge of metallic materials, non-metallic materials, lubricating materials, etc.

1.3 The basic composition (structure, transmission, electrical, control, etc.), principle, purpose, working characteristics and requirements of the working environment of lifting machinery.

1.4 The main parameters of hoisting machinery (including lifting performance curve).

1.5 The scrap standard of the main stressed structural parts and parts of the crane .

1.6 Specifications and methods of typical crane installation (including disassembly) and maintenance (including construction plan, selection of spreaders and lifting equipment, etc.).

1.7 Functions and requirements of safety protection devices for hoisting machinery

Including lifting weight limiter, lifting torque limiter, lifting height limiter, stroke limiter (including limit switch), connection (interlocking) protection device, overspeed protection device, amplitude limiter, deflection indicator or Limiting device, device to prevent the boom from tilting backward, limit moment limit device, anti-skid device, rotation limit device, buffer, anti-collision device, anti-rolling safety hook, anti-breaking shaft of luffing trolley, falling off and overturning Device, cage door and landing door or landing railing and cage connection (interlocking) device, emergency exit door safety switch on the top of the closed cage, anti-fall safety protection device, safety anti-loose rope and rope break protection device, Manual safety device, device to prevent people or vehicles from entering, security inspection device for entrance and exit doors and fences (interlocking), car board blocking device, overtravel stopper, device to prevent carrier falling, parking in place detection device, both ends The functions and requirements of protection measures for chain synchronous operation, anti-overlapping automatic detection devices, etc.

1.8 Working principle of hydraulic components and hydraulic transmission.

1.9 Hoisting command signal.

1.10 Mechanical installation and repair construction.

2. Safety knowledge

2.1 Responsibilities of installation and repair operators.

2.2 Safety operating procedures for installation and repair operations.

2.3 The use of labor protection equipment.

2.4 Work at heights, environmental protection, electricity safety, fire-fighting knowledge, lightning protection knowledge, and mechanical damage prevention knowledge.

2.5 Mechanical equipment maintenance safety technology and inspection requirements.

2.6 Safety knowledge of electric welding and gas cutting.

2.7 Identification and treatment methods of common mechanical failures (including mechanical parts) and various dangerous working conditions and dangerous sources in installation and repair.

2.8 Identification of safety signs.

2.9 Emergency measures for emergency installation and repair operations

Including the analysis of multiple accident cases such as electric shock, fire, collapse, squeezing, and falling, and putting forward emergency treatment such as personnel protection, on-site first aid, emergency rescue, emergency treatment and prevention measures.

3. Legal knowledge

3.1 "Regulations on Safety Supervision of Special Equipment".

3.2 "Regulations on Safety Supervision of Lifting Machinery".

3.3 "Measures for the Supervision and Management of Special Equipment Operators".

3.4 "Regulations for the Assessment of Special Equipment Operators".

3.5 "Safety Technical Supervision Regulations for Lifting Machinery".

3.6 "Limiting Regulations for Installation, Modification and Repair of Lifting Machinery".

3.7 "Regulations for the Supervision and Inspection of Major Repairs in the Installation and Renovation of Lifting Machinery".

3.8 "Rules for the Management of the Use of Lifting Machinery".

3.9 "Regulations for Periodic Inspection of Lifting Appliances".

3.10 " Lifting Machinery Safety Management and Operator Assessment Outline ".

3.11 Other relevant specifications and corresponding standards.

2. Practical skills of hoisting machinery installation and repair personnel

The actual operation skill test, the proportion of each part of the content is as follows:

(1) Relevant component identification accounts for 30%,

(2) Basic operation ability accounts for 50%,

(3) Emergency response capacity accounts for 20%.

In the actual operation skill test, the test shall be conducted according to any variety in the application project, and the actual operation skills of other varieties shall be trained and assessed by the user.

1. Basic operating skills

1.1 Use of commonly used measuring instruments

Including the use of level gauges, theodolites, vernier calipers, dial indicators, internal and external micrometers, and the use of steel tape correction values.

1.2 Identification of common main stressed structural parts and mechanical parts

1.2.1 Identification of common main stressed structural parts

Including the identification of main beams, main and auxiliary booms, main supporting legs, standard sections, etc.

1.2.2 Identification of common mechanical parts

Including the identification of reducer, coupling, wheel set, reel set, hook set, pulley set, etc.

1.3 Recognition of commonly used welding symbols.

1.4 Identification of technical documents, such as structural assembly drawings, mechanical parts and assembly drawings.

2. Professional operation skills

2.1 The basic operation method of hoisting machinery.

2.2 Installation, adjustment and repair of main stressed structural parts

Including the installation, adjustment and repair of main beams, main and auxiliary booms, main support legs, standard sections, cabs, walking platforms (ladders, platforms, railings), etc.

2.3 Installation, debugging and repair of main mechanical parts

Including the installation, debugging and repair of reducer, brake, coupling, wheel set, drum set, hook set, pulley set, wire rope, etc.

2.4 Installation, debugging and repair of common mechanical transmission system

Including the installation, debugging and repair of lifting mechanism, walking mechanism, luffing mechanism, slewing mechanism, etc.

2.5 Installation, adjustment and repair of common hydraulic transmission systems (applicable to operators with hydraulic systems)

Including the installation, adjustment and repair of power components, control components, actuators, auxiliary components, etc.

2.6 Installation, adjustment and repair of common safety protection devices

Including the installation, adjustment and repair of brakes, lifting weight limiters, torque limiters, height limiters, stroke limit devices, wind protection devices, etc.

2.7 Common performance test

Including no-load test, static load test, dynamic load test, continuous operation test and other performance tests.

2.8 Common mechanical troubleshooting

2.8.1　Common faults of brakes

Including the following faults:

(1) The brake wheel cannot be braked;

(2) The brake is not released;

(3) The brake heats up, the friction plate emits a burnt smell and wears quickly;

(4) The brake is easy to leave the adjustment position, and the braking torque is not stable enough.

2.8.2 Common faults of reducer

Including the following faults:

(1) When the gear meshes, there is uneven knocking sound and the casing vibrates;

(2) The reducer vibrates on the base;

(3) Oil leakage on the split surface;

(4) The housing, especially the place where the bearing is installed, generates heat;

(5) The reducer heats up as a whole.

2.8.3 Common faults of operating agencies

Including the following faults:

(1) The bridge runs slantingly and gnaws the track;

(2) Skidding;

(3) "Three-legged" operation;

(4) The whole machine twists when starting.

2.8.4 Common faults of the coupling

Including the following faults:

(1) There are cracks in the coupling half;

(2) Wear of connecting bolts and pin holes;

(3) The gear teeth of the gear coupling are worn or broken.

2.8.5 Common faults of rolling bearings

Including the following faults:

(1) The temperature is too high;

(2) Abnormal sound (intermittent dumb sound);

(3) Metal grinding sound;

(4) Filing or impact sound.

2.8.6 Common faults of wheels

Including the following faults:

(1) There are fatigue cracks on the tread and the spoke wheel;

(2) Uneven wear of the active wheel tread;

(3) The tread or rim is severely worn.

3. Theoretical knowledge of hoisting machinery electrical installation and repair personnel

The theoretical test, the proportion of each part of the content is as follows:

(1) Professional basic knowledge accounts for 30%

(2) Safe use and operation knowledge accounted for 50%

(3) Knowledge of laws and regulations accounts for 20%.

1 Professional basic knowledge

1.1 Basic knowledge of electrical engineering, basic concepts of current, voltage, resistance, Ohm's law, electromagnetic induction, electrical work and electrical power.

1.2 Related knowledge of commonly used electrical equipment (devices)

Including relevant knowledge of transformers, motors, controllers (linkages), contactors, relays, circuit breakers, fuses, etc.

1.3 How to use common electrical measuring instruments

Including the use of multimeter, clamp ammeter, insulation resistance tester, ground resistance tester, etc.

1.4 The basic composition (structure, transmission, electrical, control, etc.), principle, purpose, working characteristics and requirements of the working environment of lifting machinery.

1.5 The main parameters of hoisting machinery.

1.6 The basic circuit composition, driving and control principles of hoisting machinery, the functions and requirements of main electrical components, and new technologies such as frequency conversion speed regulation, microcomputer control and remote control.

1.7 Functions and requirements of safety protection devices for hoisting machinery

Including lifting weight limiter, lifting torque limiter, lifting height limiter, stroke limiter (including limit switch), overspeed protection device, electrical interlock protection device, device to prevent the boom from tilting back, and limit torque device , Anti-wind and anti-skid device, wind speed alarm, rotation limiter, anti-collision device, boarding signal button, conductive slide line protection measures, anti-electric shock device, hanging cage door and landing door or the connection of parking railing and cage ( Interlocking device, emergency exit door safety switch on the top of the closed cage, electrical switch for anti-fall safety device, safety rope and rope break protection device, manual safety device, prevention or vehicle entry device, entrance door and fence connection ( The functions and requirements of interlocking safety inspection device, overtravel limiter, parking in place detection device, synchronous operation protection measures of both ends of the chain, anti-overlap automatic detection device, etc.

1.8 Functions and requirements of the electrical protection system of hoisting machinery

Including short circuit protection, zero protection, loss of voltage protection, fault (open) phase protection, overspeed protection, overload protection, automatic speed change device, electrical interlock, emergency power off switch, electrical insulation, grounding protection and other functions and requirements.

1.9 Lighting and signals.

1.10 Requirements for power supply, electrical wiring and protection of hoisting machinery.

1.11 Explosion-proof electrical requirements in explosion-proof hoisting machinery.

1.12 Electrical safety measures and technical requirements for hoisting machinery such as lightning protection, static electricity protection, moisture protection, dust protection, corrosion protection, and high temperature protection.

2 Safety knowledge

2.1 Responsibilities of installation and repair operators.

2.2 Safety operating procedures for installation and repair operations.

2.3 Correct use of labor protection equipment.

2.5 Knowledge of working at heights, environmental protection, electricity safety, and fire fighting.

2.6 Electrical equipment maintenance safety technology and inspection requirements.

2.7 Identification of common electrical faults (including electrical circuits and electrical equipment) and various dangerous working conditions.

2.8 Disposal of accidents in electrical wiring and electrical equipment.

2.9 Identification of safety signs.

2.10 Emergency response for installation and repair operations

Including the analysis of multiple accident cases such as electric shock, fire, collapse, squeezing, and falling, and putting forward emergency measures such as personnel protection, emergency rescue, emergency treatment and prevention measures.

3 Legal knowledge