On May 15th, The 20 Ton Double Girder Bridge Machine Was Loaded
May 15, 2023
On May 15th, the 20 ton Double Girder Bridge Machine Was Loaded
Product Name: Double Girder Bridge Crane
Product quantity: 1 set
Lifting weight: 20 tons
Lifting height: 15 m
Customer requirements:
The operation mode of the crane can be remote control, air operation, and ground operation (conversion of the three).
With the continuous development of the enterprise, some customers no longer use a single operation method for the crane. According to the user's own use characteristics and requirements, the electrical operation mode of the crane is gradually extended to diversified development.
Operation method introduction
1. Ground exercises
The ground operation adopts 8+1 button station (waterproof type) operation, and the two lifting mechanisms are single-speed buttons, which control the lifting action of the mechanism respectively. The big and small car mechanisms are double-speed buttons, which control the speed of the big and small cars respectively It is stipulated that when it is pressed for the first time, it is a slow speed control, and when it is pressed again, it is a fast control.
The secondary control circuit adopts 36V safety voltage, and controls the 380V contactor through the 36V intermediate relay. Action execution of the final control mechanism.
2. Remote control
The remote control adopts 8-button double-speed button control, and the remote control receiver is installed in the electrical control box.
The signal is transmitted by the remote control transmitter, and the receiver receives the control mode of the signal to drive the operation of the mechanism.
Because the remote control method has a relatively wide field of vision and the advantages of convenient operation, it is favored by most users. But its shortcomings still exist. For example, the output relay of the receiver is easily damaged, and there must be no obstructions within its allowed range. The working environment is required to be dry, free of water, dust, etc.
Note that the conversion of the three operation modes is controlled by a transfer switch.
3. Driving exercises
The driving operation is carried out by installing a control panel in the cab, and the operation buttons are installed on the control panel. The functions of the buttons are the same. At the same time, related configurations such as electric bell, lighting, fan, start, stop, key switch, indicator light, etc. are added.
There are many electrical control methods for cranes. Due to the different electrical configurations of the same type of cranes, the control methods used are also different.
The key to the design is to maximize its control performance under the condition of meeting the technological and technical requirements of the equipment.
