Shandong Yizhi Machinery and Equipment Co., Limited  

Product Name: Hydraulic Pump Motor Cylinder Valve Pressure Flow Repairing Experiment Experimental Checking Testing Test Stand Model NO.: YST 500 Oil Cylinder Position: Under Power Source: AC380V Weight: >2000Kg Control: Computer Control Display: Digital Loading Method: Dynamic Load Load Way: Electronic Load Accuracy Grade: 0.5 Maxcapacity: >1000KN Type: Hydraulic Test Machine Mass Scope of Workpiece: 4000kg Max Diameter of Workpiece: >3200mm Application Scope: Test Hydraulic Pump, Motor with Computer: Yes Certificate: ISO Models: Yst 380, Yst 500 Oversea Service: Yes Qaulity: First Class Flow Rate: 500L/Min Power: 150kw Pressure: 35MPa Motive Force: Diesel Engine with Hydraulic Drive Trademark: Yizhi Transport Package: in Container Specification: 500L/min Origin: China HS Code: 9031200090 Product Description Comprehensive Hydraulic test bench for repairing or manufacturing pump/motor/ cylinder, etcFunctional requirements: test of hydraulic pump (open, closed, double open pump), motor (high speed) , and auxiliary test of hydraulic cylinder and valve.II. , Test Items:1, displacement test: no-load pressure, discharge measurement.2, volume efficiency test: the volume measurement efficiency under rated operating conditions,3, power test: start power, rated power, overload power.4, overload test: maximum displacement of hydraulic pump or motor (high speed), nominal speed, rated pressure of 110% or the maximum pressure of running for 1 minutes or less.5, torque test: input torque of hydraulic pump, shaft end torque of hydraulic motor (reverse test)6, external leakage test: in the above test, check the leakage. of the sealing parts.7, Auxiliary test for hydraulic valve and hydraulic cylinder, etc..III. Function and parameters of the test bench1, drive mode: motor drive, power 110kw+22KW+22KW+0.75KW2, speed mode: frequency control 0-3000r/min.3, loading mode: computer proportional relief valve double-way loading 40MPa. Able to test duplex pump.4, the maximum flow rate: <= 500L/minThe maximum flow rate of low-pressure auxiliary system <= 330L/min 5,the maximum pressure auxiliary system: 35MPa6. The maximum flow rate of high pressure auxiliary system 34L/min,the maximum pressure auxiliary system: 31.5MPa7, temperature range for test bench: 0-60ºC8, medium temperature natural cooling.9, power requirements: AC380V 300A10, sensors and control power supply: DC24V11, the computer automatically generates test reports, curves, data acquisition and print output.12, display mode: digital display of speed, flow, pressure, torque.Oil supply: self priming and forced oil supply.13, test components: mainly test open hydraulic pump, double open pump, closed pump, high speed hydraulic motor. Assist in testing hydraulic valves, hydraulic cylinders, etc..14, Able to test both clockwise rotation andcounterclockwise rotation;15, with a oil filter for recycle the leaked oil16, 4 -grade filter with alarm function.17,oil tank volume: 1.25 cubic meters18, the supplier is responsible for equipment installation and commissioning More detailed specification sample for referenceApplication1YST 500 is a comprehensive professional test bench, which is designed for testing hydraulic pump / motor as well as the testing of repaired pump pr motor. YST 500 selects domestic and foreign high-quality hydraulic components and accessories, so it has the advantages of compact structure, reliable quality, reasonable design, easy operation and maintenance and other characteristics/ It is in line with the Chinese standard of GB3766-88 "the hydraulic system of general technical conditions" , in which every test request can be met by YST 500/This test bench adopts closed oil tank structure, allowing to work in the dust environment, but users should pay attention to do regular cleaning of dust on the test bench, to ensure good heat dissipation of the hydraulic system and oil cleanliness.II. structural characteristics.1.The electric motor is the driving system of the whole test bench. This test bench can be divided three parts: electric motor platform, oil tank platform, control cabinet. The structure has characteristics of small size, light weight, compact structure, and easy installation, etc. 2. It uses the design of hydraulic integrated block, so that the system has less leakage compact structure, and convenience for assembly and disassembly3, The output oil hoses are arranged orderly, clear and easy to operate and install. III Main parametersDimension and main parametersWeight: 5.1 tonOutside dimension: The driving platform: 1500x2200x1600mmThe main oil tank and the valve control table: 3000x2300x2050mmDriving power: 200KW Auxiliary motor: 22KW low-pressure oil-supply pump is vane pump, 45V-75AAuxiliary motor: 4KW, high-pressure oil-supply pump is 5cy14-1BMaximum flow: 400L+400L2. the main configuration and parameters of the test bench Driving mode: by electric motor Speed: 4 pole motor, 0--1500r/minLoading mode: manual-mode load of pressure,Mode of oil supply: self absorbing and by forceMode of display: digital meter and computer displayMode of operation: manual operation3 working medium: ISOVG46 hydraulic oil 4. Volume of oil tank: designed 2000L , 1800L in reality 5. The requirement of the cleanness of the oil: GB/T14039 19/16(NAS10 grade)IV: Installation instruction1. After the arrival of this hydraulic system, check if everything is within the requirements. if the test bench meet the designing request, and if there is any damage. Otherwise, contact the manufacturer directly. 2.When each part of the hydraulic system is installed, make sure that the cover or wrap of every outside oil port do not fall off before matching hoses for this equipment, to avoid any pollution of this hydraulic system.3.After this hydraulic system is transported to the position for installation, fixed it firmly, to avoid any influence to the performance of this hydraulic system. 4.After every part of this hydraulic system is at their right position, match hoses for the hydraulic system according to the hydraulic operational drawing.5.When doing the connection work, do not miss or damage any seal,6. After finishing the installation, please connect the electric components according the wiring diagram.Commissioning InstructionAfter the installation of this hydraulic system, according to the hydraulic principle diagram, circuit wiring diagram, check if every part of the hydraulic system is properly installed, the pipeline is properly connected, electrical wiring is correct connected, otherwise timely solve. 2Unscrew the air filter cover, add hydraulic oil to the tank to the maximum limit of the liquid level gauge with filtering machine whose filtering accuracy is not below 20 um through the air filter, and then restore the air filter. 3.Turn all the adjustment knobs on the control table counterclockwise to Zero. 4.Button the electric motor, of it can not start, adjust the circuit again. Pay attention. to the rotation direction. VI How to operateBefore use, check if every component and the adjust screw of the is at its correct position, if the liquid level is within the indicating scope of the liquid level gauge, if there is any loose of joints or fastening screw. If everything is normal, the hydraulic system can be put into operation.Before the start or stop of the electric motor, loading, oil supply, pilot, speed must be regulated to zero by turn the buttons counterclockwise, to make the motor start or stop in the no-load. 3.During the use of the oil absorption and return oil filters, if there is any blockage, the indicator will send signal ( red light) 4It is not allowed to adjust the locked relief valve. 5.The oil level is not allowed to be lower than the liquid level gauge. If the oil is short, add oil timely. 6.In case of failure, the system should be checked in time 7.During the use of the hydraulic system, write down in detail about the change of the oil, the change of components and auxiliary parts, which is convenient for future maintenance and fault analysis.VII. about the maintenance After finish of the commissioning of the hydraulic system, change the hydraulic oil every year, and wash the oil tank and change the oil filter when changing the oil, to ensure the normal operation of the hydraulic system. During use, check the blockage of the oil filer often, and timely clean or replace the oil filer. 3/In order to deal with the fault in time, wearing parts and components, accessories and spare parts, should be stocked. VIII. Common failures and treatmentFailure solution 1. No loading pressure check pumps and relief 2.No flow or incorrect flow Check the flow meter and calibrate it again. Accessories and wearing parts The loading valve and oil filer are wearing parts. They should be stocked often. Operation Principles of YST 500 Steps of testing Closed pump( motor) Preparation Turn on the switch Turn on the gauge switch and manual/automatic switch( first choose manual)Choose the clockwise/counterclockwise switch according to the rotation of the pump to be tested/ For motor, and rotation direction is ok. All the knobs for loading, supplying oil pilot should be turned counterclockwise to zero. The knob for adjust speed should also be set zero. Open the stop valve of the oil inlet port.Open all the ball valves connecting hoses, Close all the ball valves without connection with any hose. Connect the oil port of the motor to be tested. Connect the port A and B to the ports of the closed circuit of the test bench, O Oil leakage port O Oil leakage port Main O Closed high pressure port A(port for supplying oil) O Closed high pressure port B(port for supplying oil)Platform O Open high pressure port A O Open high pressure port B Of O Pilot oil port A O Pilot oil port B Test BenchTest operation (here only for closed system)Test of pressure of oil filling ( only for closed pump)Switch on the electric motor to the speed of 1000r/min. pay attention to the flow meter. After the value of flow meter is stable, the value is the charge quantity. Increase the loading pressure to the value of pressure is stable. The stable value of pressure at this moment is the pressure of the start pressure of the relief valve of the charge pump. After the test, reduce the loading pressure to zero and reset the speed to zero.Steps start the motor for supplying oilAdjust low-pressure oil supply pressure( simultaneously adjust loading pressure) to the rated oil-filling pressure of the pump/Start the main motor, adjust the speed control knob, so that the speed reached (recommended) 1000~1500 rev / min 4.When testing the 2nd and 3rd steps above, pay attention to the driving speed meter, the flow meter at the right side, closed pressure meter( adjust to 2-3 Mpa). The pressure of charging oil should not lower than the pressure of the charging pump. Make the speed stop at a stable value and record it. 5.Load pressure through adjust the corresponding knob and record. 6.Motor reverse test is same with 1-5 mentioned above. 7.Matters need attention in pressure loading: keep the speed constant during loading pressure. 8.The end of test After test, adjust the loading valve and speedknob to zero.First stop the main electric motor( completely stop)Valve of supplying oil should be adjust to zero.Stop the motor of low-pressure oil supply Steps of testing open pumpPreparation 1.Turn on the switch2.Turn on the gauge switch and manual/automatic switch( first choose manual)3.Choose the clockwise/counterclockwise switch according to the rotation of the pump to be tested/ 4.All the knobs for loading, supplying oil pilot should be turned counterclockwise to zero. The knob for adjusting speed should also be set zero. 5. Open the ball valve connecting to the hose.6. Connect the high-pressure port of the pump to the pressure-loading port.7. Connect the oil port on the housing to the oil discharge port. 8. Open the stop valve. O Oil leakage port O Oil leakage port Main O Closed high pressure port A(port for supplying oil) O Closed high pressure port B(port for supplying oil)Platform O Open high pressure port A O Open high pressure port B Of O Pilot oil port A O Pilot oil port B Test BenchAttention: If forced oil supply is needed, connect inlet port of the pump to the high pressure port A or B, and start the motor of low- pressure oil supply and adjust the pressure of supplying oil to zero.Steps start the motor of low- pressure oil supplyAdjust the pressure of low pressure oil supply to 1.5-2 Mpa. Start the main electric motor. Adjust the rotation speed to 1000-1500r/min( recommended). Observe the speed meter, flow meter, and pressure loading meter.Load pressure Matters need attention in pressure loading: keep the speed constant.At the end of test: The pressure knob goes to zeroSpeed knob goes to zeroStop the main electric motorThe valve of supplying oil goes to zeroStop the auxiliary electric motorWarning: If forced oil supply is needed, first stop the main electric motor, then stop the low- pressure oil-supply motor. XI. Attention about the operation for YST 500 Preparation before operation1. Before use, should check if the system components and auxiliary parts of the adjusting screw is in the correct position, whether in the oil liquid level within the scope of the liquid level gauge, if the pipe joints, and the fastening screw is loose. If everything is normal, the hydraulic system can be put into operation;2.Before the start and stop of the electric motor, the electromagnet should be cut off, so that the motor start or stop under no-load condition. And pay attention to the direction of rotation; 3. In the course of the use of oil absorption filter and return oil filter, in case of blockage, the indicator is on,(red light). Change the blocked filer in a timely manner 4.It is not allowed to adjust the locked relief valve.All the ball valves of the test bench should be at the correct positions. When testing pump, all the valve that is needed should be open and all the valves that are not needed should be closed.oil level should not be lower than the liquid level meter. If the oil is short, add oil timely.In case of any failure of the hydraulic system, stop the hydraulic system and check.In the use of the hydraulic system, record in detail about the replacement of oil, components, and auxiliary parts, fault handling for future, easy maintenance, repair, and fault analysis.I also have portable hydraulic test bench belowWelcome to my factory. I am in Jinan city, Shandong province, China.Best regardsMike