1) pre test preparation.
When measuring the circulation time of the boom cylinder, the a will extend the bucket bar and the empty bucket will turn the bucket into the ground.
When measuring the circulation time of the bucket cylinder, the h will turn the empty bucket up to the ground, and the bucket rod is perpendicular to the ground. The distance between the bucket and the ground is 0.5m.
When measuring the circulation time of the bucket oil cylinder, the empty bucket is placed in the middle of the turning and turning of the C, so that the side of the side plate is perpendicular to the ground.
The temperature of D hydraulic oil is (50 + 5) C.
2) the testing of the circulating time of the hydraulic cylinder.
A selects the following switch positions:
(1) engine control dial: maximum position;
E mode switch: OFF;
HP mode switch: OFF;
Working mode selection switch: general use mode;
Automatic slow car switch: OFF.
B hydraulic cylinder cycle time detection (oil cylinder full travel, including buffer zone).
An arm cylinder: measuring the time of raising the arm and reducing the time of the arm. To this end, the manipulator is placed at one end of the stroke, and then the joystick is pushed to the other end of the stroke as soon as possible.
Bucket rod oil cylinder: measuring the time needed to measure the bucket and the time required by the bucket to take back the required time. To this end, the joystick is placed at one end of the stroke, and the joystick is pushed to the other end of the stroke as soon as possible.
The bucket oil cylinder: measuring the time required for the bucket to turn over and the time required for the bucket to turn out. For this purpose, the bucket manipulator is placed at one end of the stroke, and then the joystick is pushed to the other end of the stroke as soon as possible.
C 3 times per measure, and the average value is calculated.
