ii. inspection objectives
1、construction loader---hydraulic torque converter, power-shift transmission;
2、construction bulldozer---hydraulic torque converter, power-shift transmission;
3、forklift--- hydraulic torque converter, power-shift transmission;
4、large tonnage truck--- hydraulic torque converter;
5、construction machinery gearbox;
6、hydraulic coupling;
7、passenger car hydraulic torque converter;
8、static torque test for various drive components.
三、inspection items
1、 hydraulic torque converter
traction test
stall test
2、 power-shift transmission
no load power loss test
drive efficiency test
shifting process test
noise test
3、 construction machinery gearbox
running-in test
temperature rise test
drive efficiency test
noise test
三、description of the benches
benches are divided into three sizes: 160kw、240 kw and 400kw according to their drive power
1、 160kw performance test bench
driving and loading equipment adopt advance japanese techniques and can meet performance inspection requirements of hydraulic torque converters and hydraulic couplings of power under 160kw.
maximum speed: 3000r/min
speed adjustment range: 1:5
speed stability accuracy: 0.1%
oil circuit: stepless setting of oil supply and automatic adjustment of oil temperature
test system: adopting reliable htc online test software for hydraulic torque converter with reliable data acquisition and processing. test curves can be accomplished in the same time as testing and clear and intuitionistic curves meet completely requirements of gb/t7680-1987 “hydraulic torque converter performance test method”
2、 2. 240kw performance test bench
driving control adopts siemens, germany, dc speed regulation control system and can meet performance inspection requirements of hydraulic torque converters and hydraulic couplings of power under 240kw.
commonly used speed: 2200r/min
speed adjustment range: 1:20
speed stability accuracy: 0.1% (of rated speed)
oil circuit: both self supply and external compensating modes can be realized with adjustable working oil temperature.
test system: accuracy of instrumentation meets completely requirements of jb/t 9720-2001 “performance test method for hydraulic torque converter of construction machinery”.
3、 3. 400kw performance test bench
driving control adopts siemens, germany, dc speed regulation control system and can meet performance inspection requirements of power-shift transmission, hydraulic torque converters and hydraulic couplings of power under 400kw.
maximum speed: 3000r/min
speed adjustment range: 1:20
speed stability accuracy: 0.1% (of rated speed)
oil circuit: two quantities of oil are available according to test conditions. working oil temperature can be adjusted.
test system: accuracy of instrumentation meets completely requirements of jb/t 9720-2001 “performance test method for hydraulic torque converter of construction machinery”. performance test of hydraulic torque converter can be supported by htc online testing software. rapid communication can be implemented between instrumentation and host computer with reliable data acquisition and accurate data processing.
|
