An external hydraulic cylinder buffer exhaust device is composed of a valve body, a check valve, a throttle valve, an exhaust valve, and a pressure measuring joint. The check valve, the throttle valve, and the exhaust valve are assembled on the valve of the valve body In the hole, there is an oil port on the valve body, and the oil port is respectively connected with the buffer cavity and the oil cavity of the hydraulic cylinder.
The external hydraulic cylinder buffer exhaust device, as an independent component, can be directly installed on the outer surface of the head and bottom of the buffer hydraulic cylinder to realize the buffer exhaust function of the buffer hydraulic cylinder. Compared with the current buffer exhaust device that directly processes valve holes on the cylinder head and cylinder bottom of the buffer hydraulic cylinder, it can effectively improve the production efficiency of the manufacturing, reduce the manufacturing quality cost, and have the conditions for forming standardized products.