Shandong Yizhi Machinery and Equipment Co., Limited
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Comprehensive-function Hydraulic Pump / Motor Test bench
Brief introduction
The hydraulic comprehensive test bench is a specialized equipment used for testing and evaluating hydraulic components in maintenance enterprises. The system selects high-quality hydraulic and electrical components and accessories from home and abroad, and has the characteristics of compact structure, reliable quality, reasonable design, easy operation and maintenance,
The hydraulic system of this test bench adopts a closed oil tank structure, which allows it to work in a dusty environment. However, attention should be paid to regularly cleaning the dust on the hydraulic equipment during use to ensure that the hydraulic system has good heat dissipation and oil cleanliness.
Structural characteristics
This device uses an electric motor as the driving system for the entire test bench, and is equipped with two oil pump motor units as auxiliary fuel supply systems for the test bench. The test bench is divided into four parts: fuel tank valve group power pump station unit; Pump testing unit; Motor testing unit; Control unit. The installation structure has the advantages of light weight, compact structure, and easy installation.
It adopts an integrated oil circuit block design, the system has the characteristics of low leakage, compact structure, easy disassembly and assembly.
The output oil circuit is arranged neatly and clearly, making it easy to operate and install.
Main parameters:
Power: 160KW+22KW+2.2KW+0.8KW+0.8KW+0.75=187KW
Maximum pressure: 35MP;
Main system flow: 550L+550L
Hydraulic pump speed: 0-1500r/min
Functional configuration and parameters of the test bench:
Function: The hydraulic comprehensive test bench can test the following components:
Main tests: single and double hydraulic pumps; Open and closed hydraulic pumps; Axial high-speed hydraulic motor, etc.
Drive mode: Electric motor output power of 160kw; Rotational speed 0-1500r/min
Loading method:
1) Pump loading: Proportional relief valve dual remote loading pressure maximum 35Mpa
2) Motor loading: The loading motor (used as a pump operating condition at this time) loads the tested motor (measuring torque, speed, etc. at the torsion shaft).
Oil supply method: Low pressure oil pump oil supply: 350 L/min 0-3MPa and self-priming oil supply are both available;
Pilot auxiliary oil: 15L/min 0-4Mpa
Display mode:
The instrument and computer can simultaneously display:
1. Digital display of flow rate, temperature, speed, and torque;
2. The pressure is displayed by a mechanical pressure gauge (the computer reads the pressure sensor signal);
The liquid level is directly displayed by the level gauge;
3. Filter blockage triggered by red light alarm;
4. All data displayed on computer LCD, including data tables and curve graphs.
Oil purification: Filter the incoming and outgoing oil from the fuel tank.
An additional oil filter is provided to recover the oil in the oil tank on the recycling platform.
Working medium: ISOVG32 # hydraulic oil
Fuel tank capacity: 1500L, actual refueling 1300L
Four sets of multi-purpose flanges and related joints are connected by the pump, and one semi-finished connecting shaft is used for processing the connecting shaft sleeve.
Items Tested
Displacement inspection test: No load pressure, measure displacement.
Volumetric efficiency test: Measure the volumetric efficiency under rated operating conditions.
Overload test: The maximum displacement, nominal speed, and rated pressure of the hydraulic pump should be operated for less than 1 minute at 110% or maximum pressure (depending on the power of the tested component).
External leakage: In the above test, check the leakage situation of the sealing part.
Test accuracy: (1) Pressure: accuracy ± 0.1%, measurement range 0-35Mpa
(2) Flow rate: accuracy ± 0.5%, measurement range 5-400L/min
(3) Speed: accuracy ± 0.5%, measurement range 0-2200r/min
(4) Temperature: accuracy ± 1 ℃, measurement range -20-100 ℃
Testing method
Hydraulic pump test: The main driving motor drives the tested pump filter to extract medium from the hydraulic oil tank to complete the working action. The pressure load is increased or decreased through the proportional relief valve at the working oil port of the tested pump. (Closed circuit pump requires auxiliary oil supply pump to be turned on)
Axial high-speed hydraulic motor test: Conduct pump condition test with the same pump (auxiliary oil supply pump must be turned on)
High speed hydraulic motor with balance valve function: The tested motor is subjected to shaft end loading test by the loading motor (used as a pump operating condition at this time).
Other data
The maximum flow rate of the system is ≤ 550L/min * two channels
The maximum flow rate of the low-pressure auxiliary system is ≤ 350L/min, and the maximum pressure of the
low-pressure auxiliary system is 0.6-3Mpa.
The maximum flow rate of the pilot system is ≤ 15L/min, and the maximum pressure of the pilot auxiliary system is 0-4Mpa.
Equipment operating environment temperature range: -10-60 ℃
Equipment power requirement: AC380V 400A
Sensor and control power supply: DC24V
Computer automatically generates experimental reports, curve graphs, data collection and printing outputs.
Display mode: digital display of speed, flow rate, temperature, and torque.
What components tested: mainly test open hydraulic pumps, double open pumps, closed pumps, high-speed hydraulic motors, etc.
Clockwise rotation, counterclockwise rotation; Can be tested
Installed one oil filter truck for recovering leaked oil.
Main configuration
1 electric motor 160kw 1 set
2 radiators 450L/Min 2 units
3 auxiliary motors 22kw 1 set
4 electric motors 2.2kw 1 set
5 distribution cabinets 187kw 1 set
6 oil filter trucks 0.75kw (LUC/40) 1 set
7 overflow valves, 5 main overflow valves, 5 remote overflow valves, a total of 10 valves
8-piece one-way valve plate and 8-piece tubular valve
9 directional valves, 2 pieces
10 oil return filters, 2 pieces
11 oil suction filters 2 pieces
12 air filters 1 piece
13 liquid level display meter YWZ/400T 1 piece
14 integrated blocks Shandong Huayi Hydraulic 4 pieces
15 fuel tanks and accessory pipelines, Shandong Huayi Hydraulic 1 set
16 flow sensors, 50, 25, a total of 3 sets
17 digital display instruments, 6 pieces
One 160KW 18 frequency converter
19 hydraulic pumps 45V75A C310, a total of 2 units
20 high-speed loading motor A2FM250 1 set
21 oil suction valves, 2 pieces
One set of 22 hydraulic hoses
One 23 torque meter
24 temperature sensor PT100 1
25 speed sensor NJK 1
26 pressure sensors, 3 pieces
27 Siemens PLC 1 unit
28 mechanical pressure gauges, 6 pieces
29 electrical components including contactors, relays, air switches, transformers, switch power supplies, etc
30 Siemens modules (4 analog inputs) 3 units
31 industrial computers 1 unit
32 current transformers, 1 voltmeter each
33 HP printer 1 unit
34 lighting fixtures, 4 lights
35 monitor 1 unit