The working devices of different types of forklifts have different structural relationships, and their motion relationships will also be different. These differences often appear in order to realize some functions. For example, according to the functional differences of forklift working devices, some forklifts are called partial free lift forklifts. When the lifting hydraulic cylinder of this forklift is fully retracted, the top of the upper end of the lifting hydraulic cylinder keeps a certain distance from the beam of the inner gantry. When the lifting hydraulic cylinder begins to stretch a small length, the top of the upper end does not immediately contact the beam of the inner gantry. At this time, the inner door frame still maintains its original height, but the sprocket and chain are pushed up by the lifting hydraulic cylinder to raise the fork frame to a height, so that the fork connected to the fork frame is a certain distance from the ground.
The forklift with this working device can raise the fork to a certain height when the inner gantry is not higher than the outer gantry, which is convenient for the forklift to pass through the passage with a small height and improves the trafficability of the forklift.
The difference of movement relationship between partial free lift forklift and general forklift working device.
In addition to some free lift forklifts, some forklifts can lift the forklift to the top of the outer gantry under the condition that the inner gantry is not higher than the outer gantry, so as to meet the requirements of low operating environment. This kind of forklift is called full free lift forklift.
These two kinds of forklifts have their own characteristics, which can adapt to the special requirements of a certain working environment and expand the working range of forklifts.
In practical work, in order to meet the requirements of high stacking, some forklifts are installed with inner, middle and outer gantry. This kind of forklift is called three gantry forklift or multi gantry forklift.
Due to its own structure, the three gantry forklift truck also has different general movement relations in order to realize its unique functions. First, it can also realize partial free lifting or full free lifting.
In a word, the working device in forklift maintenance can achieve a certain differential movement relationship and have unique functions only by relying on the setting of structure. However, there are some differences in the structural settings of forklift working devices when they have unique functions and achieve a certain differential movement relationship.
Post time: Jul-19-2022