Views:0 Author:Site Editor Publish Time: 2020-01-10 Origin:Site
Do you know the bridge crane? It is the most widely used and largest number of lifting appliances. I will introduce you to the bridge crane pendant control that it will use together and the precautions for using the bridge crane pendant control.It is also a type of pedant crane control.
Table of Contents:
What is a bridge crane?
Bridge crane pendant control link
Bridge crane pendant control precautions
Bridge cranes are lifting equipment that traverses materials in the workshop, warehouse and stockyard. Because its two ends are located on tall cement columns or metal brackets, they are shaped like bridges. The bridge of the bridge crane runs longitudinally along the rails laid on the elevated sides of the bridge, which can make full use of the space under the bridge to lift the materials without being obstructed by the ground equipment.
l The weight should be able to move in the up, down, left, right, front and back directions and move simultaneously in the three-dimensional direction. In addition to the downward movement, terminals in the other five directions should be equipped with terminal protection.
l To have a reliable braking device, even in the event of a power outage, the weight will not fall due to its own weight.
l There should be a large speed range. When starting from a stationary state, it should be gradually accelerated from the lowest speed, and the acceleration should not be too large.
l To prevent possible hazards during overload or overspeed, there are short-term overload protection measures. Overcurrent relays are generally used as overload protection for circuits.
l There must be a pressure loss protection link.
l There must be security measures.
l Personnel operation
Some crane operators are accustomed to using two hands to operate the bridge crane pendant control when using the crane, especially when installing the mold, in order to install the mold more accurately in the injection molding machine. Some operators prefer to hold the bridge crane pendant control with their left hand, push the button with their thumb, while others press the button with their right hand. Because the remote control button is very light, it is often mishandled. During work, no one on the bridge or a hook can be used to transport people. No cranes are allowed to operate without a license and after drinking. You must concentrate on your mind, don't talk, smoke, or do anything unrelated.
l Crane line problem
In the long-term and frequent use of cranes, some lines and joints have obvious aging, especially if the line is loose, or the crane directly fails, or the crane can not be used. Since the connectors are frequently exhausted or the rated voltage is less than 1/10, the connectors cannot be combined, which may also cause the crane to malfunction. Before the crane failed, we pressed the remote control key by hand. When we can hear the sound absorption of the bridge crane pendant control from top to bottom, the joint is normal. If there is no sound absorption, there may be a problem with the connector or cable.
l Electric hoist problem
When the electric hoist is in use, the motor is abnormal due to lack of oil in the deceleration shaft box, overheating or oil leakage of the deceleration shaft. Stop immediately to check whether the motor is running; the offset of the coupling, the guide of the wire rope, and the brake disc of the elevator Aging is the main problem. The spring on the upper and lower limit nuts or the limit rod is severely worn, resulting in a decrease in the spring force, which causes a lifting problem.
What you need to know is that the correct operation of the day is important, but you can't ignore the usual maintenance and management. If you have more questions, please let us know and we will answer your questions.