Design And Application Of Hydraulic Lifting Test Bench For Tractor

With the development of science and technology, hydraulic technology plays a more and more important role in agricultural production. In this experiment, the significance of the study is to provide an easy-use platform lifting force test for the majority of the agricultural machinery testing company. This research mainly includes the design and test of tractor hydraulic lift capacity design and simulation analysis of the loading frame and hydraulic loading system,also include the installation and application of debugging and test to enhance the capability of test bench for tractor.Through reference the size range of the three point suspension device, the size of the special load frame is designed to meet the test requirements., Analyzing the mechanical strength of the load frame.Through ADMAS simulation analysis obtained loading frame and the enhancement of the sensor connection point force.In order to achieve the design and analysis the loading frame. Make sure under the condition of maximum 44100N loading, the test rig can run stably.The hydraulic loading system design must through standard design calculation the hydraulic loading oil cylinder of the external load, velocity and structure size. Draw the hydraulic loading system of system flow and pressure loading.By comparing several hydraulic loading system test scheme, determined the hydraulic system scheme of this paper.Through the lifting force and static settlement test of the hydraulic lifting device, such as LZ702, LZ802, LX502, FGS702 and so on.Indicates that the test bench work stable performance.The error of the pressure within 2%, the error of the lifting force within 1%.Lifting time less than 3 seconds, the load distance can reach 700mm, enhance the highest position of dip angle of post can be reached more than 10 degrees.The test data can reach the accuracy standard stipulated in the test procedure of the tractor lifting test.The hydraulic lifting test rig was carried out in the Hunan agricultural machinery identification station. The prototype reached the design requirements, reliable operation.Can be used for the actual production.