The Role Of Electrical And Mechanical Safety Devices On 25 Ton Bridge Cranes

The role of electrical and mechanical safety devices on 25 ton bridge cranes

The 25 ton bridge crane is an important material lifting equipment. It is widely used in construction sites, docks, factories and other places. Bridge cranes are usually composed of mechanical components and electrical components, of which the electrical components are mainly control systems (electrical systems). As an important part of the crane, the electrical system is not only used to control the movement and operation of the mechanical system, but also plays an important role in ensuring the safety of the crane's operation.

The role of electrical appliances on bridge cranes:

The electrical equipment installed on the 25 ton overhead crane includes control panels, controllers, limit switches, electric motors, cables, brakes and other related equipment. These devices regulate the start, stop, direction, speed, height, etc. of the crane through orderly operation.

Specifically, the functions of electrical appliances on bridge cranes are as follows:

1. External environment monitoring

25 ton overhead bridge cranes work in various harsh environments. In this case, not only do normal operations need to pay attention to environmental changes and maintain a smooth operating route, but they also need to guard against some external weather factors, such as power crosstalk. , lightning strikes, etc. Therefore, the electrical equipment on the crane must be responsible for monitoring and ensuring these conditions to ensure that the crane can complete operations safely, reliably and efficiently under changing target objects.

2. Control the height of the overhead crane

During the lifting process, the electrical system controls the lifting and lowering of the wire rope by controlling the voltage of the motor, thereby controlling the position and height of the lifting object. The voltage needs to be adjusted reasonably to ensure the stability and reasonable operation of the lifting object.

3. Manipulate mechanical components

The electrical system can also control the movement path and speed of mechanical components, such as the entrance and exit of the crane, the rotation of the swing arm, the movement of the car body, etc. These movements are controlled by electrical equipment by sending electrical signals.

4. Strengthen the protection of the crane during operation

When the 25 ton crane is running, problems such as excessive inertial force during deceleration of the mechanical components or excessive maneuvering angle when the cable breaks may occur. These dangers will lead to mechanical damage to the crane or casualties and other accidents. In order to minimize the occurrence of these accidents, the electrical system is also responsible for managing and detecting the safety protection of the crane during operation. For example, in the event of electrical failure or abnormality of the electrical device, the power supply should be cut off in time to prevent major accidents. .

The role of mechanical safety devices on bridge cranes

In addition to electrical systems, mechanical safety devices are also an important factor in ensuring the safety of crane operations. Mechanical safety devices can effectively prevent mechanical components and cargo from entering the restricted area and prevent accidental injuries caused by operating errors.

Mechanical safety devices mainly include the following types:

1. Limiter

The limiter of the 25 ton bridge crane is mainly used to protect the lifting and lateral movement range of the crane, and plays a great protective role in avoiding mechanical impact and collision.

2. Clamp and weight bucket

When the crane is loading cargo, when the heavy objects wander, it is likely to cause the crane to overturn and cause a cargo loading accident. In order to minimize the occurrence of these accidents, the crane is also equipped with clamps and counterweight buckets to clamp and fix heavy objects and increase the center of gravity to reduce the chance of accidents.

3. Overload protection device

The overload protection device is mainly used to protect the engine and mechanical components of the crane to prevent overloading of the crane caused by data entry errors, excessive load and other factors. When overloaded, the system will send out an alarm signal and cut off the power supply.
 

4. Anti-slip device

Crane gears, chains, wire ropes and other accessories are easily contaminated by contaminants such as lubricants and sand. To prevent this contamination from causing slipping and jamming problems, anti-skid devices are installed on the crane. Anti-skid devices prevent operational problems by providing negative feedback.

In conclusion

From the above introduction, we can understand that the electrical system and mechanical safety devices on the 25 ton bridge crane play an extremely important role. They can not only ensure the normal operation of the crane, but also effectively reduce the incidence of accidents. Therefore, during the design and use of bridge cranes, attention must be paid to the installation and use of these equipment to give full play to their role.