Hydraulic chain saw of deep sea manned submersible vehicle

The invention discloses a hydraulic chain saw of a deep sea manned submersible vehicle. The hydraulic chain saw mainly comprises a sealing shell, a hydraulic motor, an upper baffle, a lower baffle, connecting keys, a saw plate, a cutting chain and an impingement plate. The hydraulic motor is fixed in the sealing shell through a flange, and after being clamped, the upper baffle and the lower baffle are fixed to the front end of the sealing shell. Sliding grooves are formed in the corresponding positions of the upper baffle and the saw plate. The clamping keys are provided with transverse keys and springs. The connecting keys penetrate the sliding grooves of the upper baffle and the saw plate to fix the saw plate to the position between the upper baffle and the lower baffle, and clearance fit connection is achieved. An output shaft of the hydraulic motor is connected with a spline shaft through a coupler, and the spline shaft penetrates a front end cover of the sealing shell and the lower baffle. A chain wheel is fixed to the front end of the spline shaft, and the cutting chain is wound on the chain wheel and the saw plate. The impingement plate is arc and is hinged to the side face of the lower baffle through a connecting rod. The hydraulic chain saw is loaded in a submersible vehicle sampling basket. The hydraulic chain saw is easy to operate, convenient to maintain, safe and reliable.