一. Enterprise Standard (developed by Yangzhou Unified Machinery Co., Ltd.)
Screw jack for vehicles Q/321001JDH 01-2012
1. Static pressure test
Static load 3min
Installed on equipment that meets the requirements of the static load test. Under no-load conditions, the vehicle is raised parallel to the ground and then loaded with the rated static load for 3 minutes.
Requirements for compliance: During the test, the jack should be free of permanent deformation, cracks and other abnormalities.
1.2 times 3 times
Installed on equipment that can meet the requirements of dynamic load test, apply 1.2 times of rated lifting weight, increase 100mm on the basis of the vehicle parallel to the ground, and reciprocate the lifting cycle 3 times.
Requirements for compliance: No permanent deformation, cracks or other abnormalities that may hinder the use of the jacks.
3. Tilt loading test
under the no-load condition, the inclined plate with the inclination angle of 10°is placed on the lower part of the foot, adjusted to the parallel with the ground, and then loaded with the corresponding static load for 3 minutes.
Requirements for compliance: The jacks should be stable and permanent deformation and other anomalies should not occur in all parts.
Dynamic load 100 times
Installed on equipment that meets the requirements of dynamic load test, the test load is the rated lifting capacity, and the reciprocating operation is not less than 100 times within the range of use.
Requirements for compliance: All parts should be free of damage and the jacks can still work normally.