A: excavator quick connector classification:
The quick change joint of excavator is divided into mechanical type and hydraulic type.
Three: hydraulic quick change connector working principle:
hydraulic quick change joint mainly relies on the cylinder action to fix and release the pin shaft 1 and 2.When the working part needs to be replaced, the oil cylinder is recovered, and the hook type pressing block moves from the position of 1 to the position of 2, quickly change the joint to disengage and change to other working parts. After the hook type pressing block is well aligned with the pin shaft, the oil cylinder is opened again, and the hook type pressing block moves from the position of 2 to the position of 1, locking the pin shaft of the working part.Of course, this is in addition to the external oil line and solenoid valve at the same time.
Four: mechanical quick-change joint working principle:
The products of domestic manufacturers are mainly divided into two types: one is bolt type, the other is screw type.Take the bolt type as an example, when the working part needs to be replaced, the wedge card shall be pulled out first and the t-shaped buckle shall be knocked in (the t-shaped buckle can smoothly drive the red part of the pressing block back to the recycling, where the welding requirements are relatively high, the slide track is not welded flat, and the pressing action of the red part is difficult to be smooth if the polishing point is not clean).Quick change joint disengage from bucket.When the required working parts are changed, the t-buckle is pulled back and wedge clips are inserted into the t-buckle for locking.
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