Hydraulic cylinder retarder

A hydraulic cylinder retarder, comprising:

• a hydraulic cylinder mechanism including a piston component and a piston compression chamber, the piston component connected with a transmission device, the piston component configured to conduct a piston motion against the piston compression chamber;
• a hydraulic oil conveying mechanism including a hydraulic oil chamber and an oil conveying pipe, the oil conveying pipe connected with the hydraulic oil chamber and conveying a hydraulic oil to the hydraulic oil chamber;
• and
• a hydraulic oil valve mechanism including a unidirectional in-flow valve component and a unidirectional out-flow valve component, the unidirectional in-flow valve component connected between the piston compression chamber and the hydraulic oil chamber to allow the hydraulic oil to unidirectionally flow into the piston compression chamber through the unidirectional in-flow valve component, the unidirectional out-flow valve component connected between the piston compression chamber and the hydraulic oil chamber to allow the hydraulic oil to unidirectionally flow out with an out-flow sectional square measure from the piston compression chamber through the unidirectional out-flow valve component, wherein the out-flow sectional square measure is significantly smaller than a piston sectional square measure of the piston component, so as to produce a resistance force during the piston motion of the piston component, thereby slowing an operation speed of the transmission device.