Mobile fixed timber pile crushing device

The invention discloses a mobile fixed timber pile crushing device. The mobile fixed timber pile crushing device comprises a device body; the device body comprises a control box; a diesel engine is arranged on one side of the control box; an air pressure cylinder is arranged below the diesel engine, and is provided with a safety air pressure valve; an air pressure pump is arranged on one side of the safety air pressure valve; a moving device is arranged below the device body; an extension support device is arranged above the device body, and comprises a support device outer cylinder; a supportdevice inner cylinder is arranged in the support device outer cylinder; a hydraulic support spring is arranged in the support device inner cylinder; and a hydraulic support plate is arranged on one side of the hydraulic support spring. The mobile fixed timber pile crushing device has the following beneficial effects: timber piles are cut through rotating a cutting blade, so that the crushing efficiency of the timber pile