A heavy-duty mining dump truck hydraulic cylinder/hydraulic valve test bench

Abstract

The invention relates to a heavy-duty mining dump vehicle hydraulic oil cylinder / hydraulic valve test table. The heavy-duty mining dump vehicle hydraulic valve test table comprises a power oil source portion, an oil cylinder test operation table, an oil cylinder supporting rack, a valve test operation table, a valve-to-be-tested installation rack, a flow measuring trolley, a waste oil collecting oil tank, a power cabinet, a PLC cabinet body, an electric control operation cabinet and an industrial personal computer. The power oil source portion is connected with the valve test operation table and the oil cylinder test operation table through different oil pipes respectively. The valve test operation table is arranged at one side of the valve-to-be-tested installation rack. The flow measuring trolley is connected with the valve test operation table or the oil cylinder test operation table. The oil cylinder supporting rack is connected with the waste oil collecting oil tank through an oil pipe. The oil cylinder test operation table and the valve test operation table are respectively and electrically connected with the electric control operation cabinet. The electric control operation cabinet is electrically connected with the industrial personal computer. The heavy-duty mining dump vehicle hydraulic oil cylinder / hydraulic valve test table are simple and compact in structure, beautiful, tidy, good in integration, convenient to control and reliable in testing.

Description

technical field [0001] The invention relates to a hydraulic test device, in particular to a hydraulic cylinder / hydraulic valve test bench for a heavy mining dump truck. Background technique [0002] Heavy-duty mining dump trucks are widely used in open-pit mines and engineering construction. The use environment is complex and harsh, and overload and long-term continuous working conditions are extremely common. In addition, oil pollution is difficult to completely avoid, resulting in a large proportion of hydraulic system failures. , and a considerable part of the failure is caused by the quality of hydraulic components such as hydraulic cylinders and hydraulic valves, and poor sealing performance, and the performance of the hydraulic system is crucial to the performance of the heavy-duty mining dump truck. Therefore, it is necessary to develop a hydraulic test bench for the inspection of the hydraulic cylinder / hydraulic valve of the heavy mining dump truck before loading and...

AI Technical Summary

Problems solved by technology

[0004] One is that the test capability is limited to the hydraulic cylinder and valve tests of mining dump trucks below 100t, which cannot meet the test requirements for pressure, flow and installation dimensions of the tested workpieces equipped with dump trucks of various tonnages, and the output flow cannot be infinitely variable. Second, the test function is incomplete. For the lifting cylinder, only the pressure (external leakage) test and internal leakage test can be performed when each section of the cylinder is fully retracted. For the hydraulic valve, only external leakage and reversing can be performed. Action inspection and safety overflow pressure setting, some performance tests such as: action and stroke inspection, starting pressure test, unloading pressure test, opening and closing characteristics, pressure loss, etc. cannot be carried out

The third is that the cylinder test bench and the valve test bench cannot share the hydraulic power source system, the integration is not strong, and the site utilization rate is poor

Fourth, the layout of the console valve is unreasonable and beautiful, the operation is inconvenient, and the safety is poor

Fifth, the leakage in the oil cylinder is measured by dismantling the rod chamber or the rodless chamber to connect the oil pipe, and using the measuring cup to read manually, which is cumbersome, inaccurate and reliable, and the degree of automation is poor.

Sixth, there is no waste oil recovery device during the test, and the waste oil leaked during the test will pollute the ground and surrounding environment in the test room

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