This device is used for separating the tire from the ring of the big wheel of the airplane and its assembling and disassembling. This device has the ability to produce a 250 bar hydraulic pressure with a 3kw electrical motor and a 30-liter pump. The bi-solenoid speed control valves and a standard block were designed and manufactured by this company and the hydraumotors are efficient for moving the jaws. This device has some guidance rules for better efficiency installed on the device jaws. For some reassurance and security reasons, some accordion tables and standard rails are used. The rails are connected to the buggy through a time strap with a motor and certain gear guided and controlled by a PLC.

• First the operator puts the buggy on the A (out) status and then puts the wheel on the below accordion table. After that, he presses the “Up” button to put the wheel on a suitable height based on the index engraved on the buggy. Afterward, the operator presses the “Down” button on the chassis to guide the accordion table downward to keep the wheel tight. After this stage, the operator presses the button on the chassis to put the buggy on B (inside) status; After that, he presses the hydraumotor buttons “open” and “close” to put the jaws on a suitable position from the wheel. After the wheel is located on its position and it is observed by the operator, the operator presses the “front” button and the knob moves toward the wheel with a suitable speed and power and separates the tire from the ring. It should be noted that a mechanism is designed under the front part of the jaw by the spring and polymer which puts the ring in the middle of the device in its right position to do the separation task appropriately. The front part of the jaw which exerts the power is made of aluminum so as not to hurt the airplane ring. After separating the tire from the ring, the operator presses the “back” button to gather the knob of the device and then presses the button on the panel of the buggy to put the device again on the “A” status; eventually the operator sets about fastening the nuts and bolts and separating the tire from the ring.

In order to assemble the wheel, the operator puts the tire and the ring on a suitable position on the device and after gathering the up and down accordion table and locating it on the proper height, he starts to fasten the nuts and bolts to complete the assembling task.

 

Potentials
This device has the capacity to automate through PLC. Also the device can change the size of the jaws both by the hydraumotor and manually. This device can be programmed for different types of wheels
The technical features of the device
Device dimensions
Length: 4000 mm-
Width: 3500 mm-
Height: 2000 mm-
Weight: 1500 kg-
The electrical system: 220V-
The hydraulic system: with Behran 68 oil, a 90-liter tank and a 120 bar working pressure
The maximum and minimum wheel diameters are 1450 mm and 350 mm, respectively