Excavator quick hitch, also known as quick-change joint. Excavator quick hitch can quickly install various configuration accessories on the excavator, such as buckets, rippers, breakers, hydraulic shears, wood grabbers, stone grabbers and other common data of excavators, which can expand the scope of use of the excavator and save time. ,Improve work efficiency.

 

1: Excavator quick hitch classification:

Excavator quick hitch are mainly divided into two types: mechanical type and hydraulic type.

 

2: Brief introduction of excavator quick hitch:

(1) Use high-strength materials, South Korea uses 20M high-strength plates, and China uses Q345B plates

(2) Suitable for various models of 4-50 tonnage;

(3) Use the safety device of the hydraulic control check valve to ensure safety;

(4) The configuration parts of the excavator can be replaced without modification or disassembly of the pin shaft, so the installation is quick and the work efficiency can be greatly improved.

 

3: The working principle of hydraulic quick hitch:

The HITE hydraulic quick hitch mainly relies on the action of the oil cylinder to fix and release the pins 1 and 2. When the working part needs to be replaced, the oil cylinder is retracted, the hook-shaped pressing block moves from the 1 position to the 2 position, the excavator quick hitch is disengaged, and the other working parts are replaced. After the hook-shaped pressing block is aligned with the pin, the oil cylinder is opened again , the hook-shaped pressing block moves from the position of 2 to the position of 1 to lock the pin shaft of the working accessories. Of course, except that there are external oil circuits and solenoid valves working at the same time.

4: The working principle of the mechanical quick hitch:

The products of mechanical quick hitch manufacturers are mainly divided into two types, one is the pin type and the other is the screw type. Taking the pin type as an example, when the working parts need to be replaced, first pull out the wedge-shaped card and knock the T-shaped buckle inward. , the slide rail is not welded flat, and if the grinding is not clean, it will be difficult for the red part to move smoothly.) The quick-change joint is separated from the bucket. When changing to the required working part, the T-shaped buckle is pulled back, and the wedge-shaped card is inserted into the T-shaped buckle to lock.