The invention relates to the field of piling car parts, in particular to a device and method for controlling the descending speed of a pallet fork of a pallet piling car, which comprises a descending speed increasing device, a hydraulic power unit comprises a T-port oil pipe and a P-port oil pipe, a descending valve port is arranged on the P-port oil pipe, a descending proportional valve is mounted on the descending valve port, and the T-port oil pipe and the P-port oil pipe are communicated with each other. A P opening of the P opening oil pipe is communicated with the oil inlet and outlet pipe through a first connector, an oil return pipe opening is formed in the speed-up valve block, the descending speed-up device is installed on the speed-up valve block and communicated with the speed-up valve block, a logic module is arranged on the side of the speed-up valve block, and the descending speed-up device is in signal connection with the logic module. The descending proportional valve and the logic module are both in signal connection with the controller, the descending acceleration device is connected to an oil way between the hydraulic power unit and the oil cylinder in parallel, logic judgment is carried out through the voltage value of the sensor, and the problems that the descending speed is obviously decreased during no-load, time is wasted, and cost is low are solved by adding an oil return opening. And certain production efficiency is reduced.

本发明堆垛车零部件领域，具体地说，本发明涉及一种控制托盘堆垛车货叉下降速度的装置和方法，包括有下降提速装置，液压动力单元包括有T口油管和P口油管，在P口油管上设置有下降阀口，在下降阀口上安装有下降比例阀，在P口油管的P口通过第一接头与进出油管相连通，提速阀块上设有回油管口，下降提速装置安装在提速阀块上且与其相连通，在提速阀块旁侧设置有逻辑模块，下降提速装置与所述的逻辑模块信号连接，下降比例阀与逻辑模块均与控制器信号连接，下降提速装置并联在液压动力单元与油缸之间的油路上，通过传感器的电压值进行逻辑判断，通过增加回油口的办法解决了空载时下降速度明显下降，较为浪费时间，降低了一定的生产效率的问题。