The present invention relates to an excavator clamping device that can be combined with a crasha. The present invention, the arm 10 of the excavator through which the first pin 20 is penetrated at the lower end; First and second hydraulic cylinders 80 and 50 each having end portions of the cylinders installed on the upper front and rear surfaces of the arm 10; Each of the first hydraulic cylinder 80 is constructed by the rod 81 and the link pin 82, but one is free from the first link 73, which is a fixed end installed above the lower end of the arm 10. Joint link 70 consisting of a single second link 74; One end portion is installed on the first pin 20, and a portion close to the one end portion includes a rod 51 of the second hydraulic cylinder and tongs 60 installed through a second pin 61. In the clamping device of an excavator, a bucket, a breaker, a crusher, etc. are selectively mounted on the lower side of the link connecting pin 71 installed at the lower end of the first pin 20 and the free end of the second link 74 It further includes that the upper both sides of the quick coupler 30 is built up; The tongs 60 are provided with a connecting portion 62 connected to the first pin 20 protruding to both sides of the upper one side of the quick coupler 30 and having one side branched thereon, and adjacent to the connecting portion 62 The other side is characterized by being built up by the rod 51 of the second hydraulic cylinder 50 and the second pin 61.
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