Quick change joint working principle
The hydraulic quick-change joint mainly fixes and releases the pins 1 and 2 by the action of the cylinder. When the working part needs to be replaced, the cylinder is retracted, the hook-shaped pressing block is moved from the position of 1 to the position of 2, the quick-change joint is disengaged, and the other working parts are replaced, and the hook-type pressing block is turned on the pin shaft, and the cylinder is opened again. The hook-shaped clamp moves from the position of 2 to the position of 1 to lock the work fitting pin. Of course, except for this, there are external oil circuits and solenoid valves working at the same time.
Mechanical quick-change joints Domestic manufacturers' products are mainly divided into two types, a plug type and a screw type. Take the bolt type as an example. When it is necessary to replace the working part, first pull out the wedge card and knock the T-shaped buckle inward. (The T-shaped buckle can smoothly move the red part to the recycling, where the welding requirements are relatively high. If the slide rails are not welded flat and the polished parts are not cleaned, the red part pressing block is difficult to move smoothly.) The quick change joint is separated from the bucket. When changing to the working part to be used, the T-shaped buckle is pulled back, and the wedge card is inserted into the T-shaped buckle for locking.