180 degree turning machine

180 degree turning machine
In production, due to the needs of processing technology and assembly technology, crane drivers often encounter the operation of turning objects 90 degrees or 180 degrees in their work. There are two most common flip forms: one is ground flip and the other is air flip. Ground turning is generally carried out with a single hook, and aerial turning must be carried out with a double hook. Today, the editor of our factory will introduce to you the method of operating the overhead crane to turn objects on the ground.
1. Object flipping operation
Doufan is also called Doufan. This overturning operation is suitable for casting and forging blanks that are not afraid of collision. The essentials of the flip operation are:
(1) The hanging method of the overturned object should be correct, and the rope should be hung on the bottom or lower part of the overturned object. Generally, the locking point of the dead-loop buckle is placed at the lower part of the overturned object away from the center of gravity.
(2) After the rope buckle is fastened, push the handle of the lifting controller to gradually raise the hook.
2. Object flip operation
The method of swinging is particularly suitable for some disc-shaped and flat-shaped work flips that are not afraid of collision. The essentials of its operation are: according to the size and shape of the object to be overturned, first lift the suspended object to be slightly off the ground, and then quickly drive the cart or trolley to artificially make the hanging object start to swing to its maximum swing. At the moment of cornering, immediately activate the lifting mechanism to quickly drop the object at the fastest descending speed. When the lower corner of the flipped object is in contact with the ground, as shown in the figure below. The hook continues to descend, and the object falls on its own under the action of the gravitational moment. When the slackness of the wire rope is enough, the descending stops, and the cart or trolley is quickly driven backwards to adjust the position of the body to achieve the object being overturned. After turning over, the wire rope is in a vertical position. When flipping, it is necessary to prevent objects from colliding with surrounding equipment, grasp the timing of flipping, and move quickly and accurately.
3. Object turning operation
For some objects that are afraid of collision, such as precision parts such as machined gears and hydraulic control panels. Generally, the belt flip operation is used to complete, as shown in the figure below.
The specific operation method of belt turning is: first hoist the turned object off the ground during belt turning operation, and then stand up and slowly descend. The horizontal component force of the tight wire rope causes the object to tip over with the pivot point A as the center. When the center of gravity G of the hanging object exceeds the fulcrum A, the object is under the action of the gravitational moment. Will dump on its own. When the overturned object is dumped on its own, it is necessary to actuate the lifting mechanism to drop the hook and control its descending speed. When dropping the hook, keep the hook vertical.
It is worth noting that for this operation with flipping, the object to be flipped must be a flat or disc-shaped object, the center of gravity must be higher after being lifted, and the bottom base must be narrow. In addition, during the operation, the hook should be kept vertical. After the wire rope is pulled up to a certain angle, it is not allowed to hoist and wind, so as to prevent the wire rope from randomly winding on the drum or falling off from the drum and winding on the shaft. twist
Broken wire rope. Furthermore, when the object is turned over, the lateral movement of the car body and the rapid descent of the hook must be coordinated with each other.
When operating the crane to turn objects, you must pay attention to safety, and it is best to operate by operators with long-term experience.