A construction lift safety report from INVT

Safety issues for construction lifts

In the construction machinery industry, construction lifts are essential construction equipment in modern high-rise construction. With the development of our country's economy, a large number of large-scale buildings have been constructed, which has prompted the increasing use of construction elevators. In recent years, various high-altitude working accidents have continued to escalate, and there has been increasing concern about the safety of construction lifts.

Construction lift safety tips

1. Operators must pass the assessment of the provincial construction administrative department and obtain the operation certificate for special construction workers before they can take up their posts.

2. Construction lifts must undergo a drop test before being put into use. During use, a drop test should be conducted every three months to adjust the anti-fall safety device.

3. Each construction lift electrical equipment should have its own dedicated switch box, and the "one machine, one gate" system must be implemented. It is strictly forbidden to use the same switch electrical appliance to directly control two electrical equipment (including sockets).

4. Construction lifts need to control the number of personnel and material weight according to the rated load.

5. Routine maintenance and inspection should be carried out before operation.

6. When encountering heavy rain, heavy fog, strong winds of level 6 or above, or ice on guide rails, cables, etc., the operation must be stopped immediately, the ladder cage must be lowered to the bottom floor, and the power supply must be turned off.

7. After the operation, lower the cage (ladder cage) to the bottom, turn each manipulator (switch) to the zero position, cut off the power supply in turn, lock the power box, lock the cage and the enclosure door, and perform cleaning and maintenance work.

8. When there are many people at work, there should be dedicated personnel on the ground to maintain order.

9.Write down the work log and shift handover record of each machine.

10. Implement a regular inspection and maintenance system for construction lifts.

Application of INVT in construction lifts

"Rolling car" protection

"Slipping" means that the construction elevator loses electric drive and control, which will cause it to run out of control and cause it to reach the top or squat to the bottom. This kind of rolling accident can endanger the lives of passengers and cause great damage to the lift itself.

INVT uses an excellent motor drive algorithm to ensure low-frequency full torque output, and has a built-in motor disconnection protection function, which improves the system response level from second level to millisecond level, which can effectively prevent the phenomenon of "car rolling".

Smarter voice broadcasting

In some news broadcasts in the past, serious overloading was the hardest hit area of the accident. Safety regulations stipulate that when people and objects are loaded in the cage, the load must be evenly distributed to prevent it from being too heavy, and overloading is strictly prohibited.

The INVT control system can make judgments based on the information collected by the camera on the number of passengers and whether they are wearing helmets. If there are any violations, the system will issue a voice warning and the construction lift will not be started.

A more comfortable elevator ride

When the construction elevator goes down, the sudden change of moment when the brake is released and the cage is affected by gravity will cause slight shaking during the startup process.

For this kind of shaking, INVT uses positive torque to solve this problem, so as to achieve the coexistence of safety and comfort during ascent, descent and shutdown. It accurately controls the rise and fall of the construction elevator, making it safer, more comfortable and more stable.

More effective security protection

Based on the original mechanical limit switch, INVT adds an electrical soft limit protection function to make the cage operation safer. When the external limit fails, it can still stop normally and avoid safety accidents.

Cloud control system

Construction elevators + INVT Industrial Internet can realize real-time monitoring of the operating status of construction elevator equipment, allowing equipment, personnel and business to achieve efficient interoperability.

INVT makes the equipment smarter and can output various types of data reports according to business needs; it refines common faults and corresponding processing methods, and the corresponding fault alarm information can automatically trigger emergency treatment plans and prevention tips, realizing rapid standard push operation procedures. , greatly improving the efficiency of enterprise operation and management.