Power steering test system

1.
Scope of application
. Implementation standards
"Standard: Bench Durability Test Project"
- Automotive Power Steering Assembly Bench Test Method" and "3-Automotive Power Steering gear assembly technical conditions》
.Test scope
This test bench is suitable for reliability testing of various types of power steering gear assemblies. This test system uses high-precision sensors and measuring amplifiers for data collection to realize the display and processing of engineering quantities such as load (torque), deformation (angle), and displacement. The test control methods include load (torque), deformation (angle), displacement, etc. kind. The use of purchased parts from world-renowned manufacturers fully ensures the system's stability, reliability, excellent performance, and synchronization with the world.
2. Test items
Standard items:
, Forward rotation endurance strength testb, Reverse rotation endurance strength test
, Forward and reverse rotation endurance strength test at high temperature, Static characteristic test
> , pressure resistance test, internal leakage test
, input shaft rotation clearance (angular displacement) test, pressure loss test
, input shaft meridional clearance test, no-load friction torque measurement
Automobile industry Standard items:
, fatigue testb, wear test
, forced steering test, reverse overload test
, overpressure test
Other items:
, input torque and output Measurement of torque relationship
3. Main technical parameters
This test system is comprehensive according to the different test condition requirements of (1) test items. It is designed with three workstations (independent workbench). By replacing different tooling , sensors and setting relevant control programs to complete the test content of the test project, and the three stations can work at the same time.
The test station configuration, technical indicators and test items are set as follows:
, Station 1 test items:
Standard items: forward rotation endurance strength test, forward rotation high temperature endurance strength test, static characteristics Test, pressure test, internal leakage test, pressure loss test, input shaft rotation gap (angular displacement) test, no-load friction torque measurement
3 Automobile industry standard projects: wear test, forced steering test, overpressure test< br/> bOther items: Measurement of the relationship between input torque and output torque
Main technical indicators:
Test waveform: pseudo rectangular wave, trapezoidal wave
Speed: r/, accuracy:
Pressure measuring range:, Accuracy:
Torque sensor one measuring range:, Accuracy:
Torque sensor two measuring range:, Accuracy:
Angle measuring range: unlimited, Accuracy:
Temperature Control measurement range: ambient temperature ℃, accuracy:
, station two test items:
b standard items: reverse endurance strength test, reverse high temperature endurance strength test
3 automotive industry standard items: fatigue Test, reverse overload test
Main technical indicators:
Test waveform: sine wave, triangle wave, square wave, trapezoidal wave, block wave
Test frequency: (continuously adjustable)
Pressure measurement range:, Accuracy:
Torque measurement range:,, Accuracy:
Temperature control measurement range: ambient temperature ℃, accuracy:
Angle measurement range: unlimited, accuracy:
Test items for station three:
Standard items: Radial clearance measurement
Main technical indicators:
Maximum test force: Effective measurement range: Accuracy:
Displacement measurement range:., Accuracy:
, the main technical requirements of the public control measurement part:
1) Electro-hydraulic servo hydraulic source:
, 3/flow
, system pressure - (continuously adjustable)< br/> Filtration accuracy:
, Hydraulic source for valve assembly performance testing bench with spare interface to be developed (mainly used as hydraulic source for tooling and fixtures)
2) High temperature hydraulic source:
, flow rate For
, filtration precision:
Control oil temperature: arbitrarily set within the range of ambient temperature °C, temperature fluctuation range °C
, system pressure - (continuously adjustable)
, reserved The interface is to be developed as a hydraulic source for the valve assembly performance testing bench (mainly used to supply oil to the valve assembly)
. The oil tank adopts a double-layer heat insulation design, and the inner material is a stainless steel plate
. There is a flow meter.
3) High temperature and high pressure oil pipe
, high temperature resistance: ℃
, high pressure resistance: