The control valve on the hydraulic cylinder

When the dynamical loop tube has some trouble,the control valve can control and protect safe.

Setting the control valve

1. the hydraulic lock on the leg cylinder

2.the turntable balance valve on the turntable cylinder

3. the first variable amplitude cylinder one-way balance valve

4. the second variable amplitude cylinder bidirectional balance valve

5. the telescopic cylinder bidirectional balance valve

6. the telescopic cylinder order valve.

Unforeseeable danger and foreseeable danger

Unforeseeable danger: hazardous situation for some parts or components that cannot be foreseen in the phase of design hence cannot be protected by safety devices.

Foreseeable danger: any potential hazard point of the crane or in the crane operation range that is already known.

The unforeseeable danger comes from the following:

the crane is not properly located for required operation; therefore it fails to provide the operator with a reasonable escape route in case of emergency.

the crane body becomes electrified as a result of contact with high-volt line or operation in rain or lightning condition.

operator gets suffocated due to long-time operation very close to the engine exhaust pipe.

hazards caused by improper operation in violation of relevant instructions specified in this manual or unauthorized modification to the crane.

 

 

 

Chapter 4. Operator Requirement

Basic requirement

Any person operating and using this crane shall be able to satisfy the following requirement:

Body condition

Operators shall have qualified eyesight, hearing and coordination ability to safely fulfill the job required by crane operation. Operator shall not operate the crane after taking medicine or alcoholic drinks that may result in reduced physical ability of operation.

Mental condition

Operators shall be able to understand and use relevant safety and regulations and make necessary precautions to ensure safe crane operation. Operators shall have good sense of judgment to ensure safety of others and themselves, as well as to ensure a well-done job.

Mood

Operators shall be able to keep calm and stand normal when subjected to great stress. Operators shall also use their sense of judgment to assess their body and mantle conditions.

Training

This is a very important step. Operators shall read, learn and understand operation manuals and charts, warnings and signs attached thereto. Operators shall, before any crane operation,make sure that they have had a good understanding of control lever use and relevant movements.

Operators shall first perform no load trial before loading the crane.

If required by law, operator shall have license to operate the crane.

Recommended appliances for labor protection

Safety helm, work gloves, shoes and safety goggles.

Responsibilities and duties

Responsibilities

Crane operators shall be responsible for crane power system startup, various crane operations, dismount and remount of some simple parts and maintenance on these parts.

Operators shall be fully aware of the importance of safety rules and devices. They shall also be familiar with the controls and nondestructive loading/unloading techniques.

Duties

Operators shall be fully responsible for proper crane operation. They shall go through each step of crane maintenance and loading operations in accordance with requirements in this manual.

Console

The operator should stand beside the console when the crane was working.

 

 

ATTENTION Јє RememberЈstill stand the hoisting way, natural operate it.