This plan is planned based on the following standards:

1. Manufacturing standards

1) GB/T16826-2008 "Electro-hydraulic Servo Universal Testing Machine"

2) GB/T2611—2007 "General Technical Requirements for Testing Machines"

3) JJG139—1999 "Tensile force, pressure and universal testing machine"

4) GB/T3722-92 "Hydraulic Pressure Testing Machine"

5) JJG157-2008 "Verification Requirements for Tensile, Compression and Universal Material Testing Machines"

2. Test standard

JJG621-2012 "Hydraulic Jack" Verification Regulations

1. Product use range

This machine is mainly used for the verification of hydraulic jacks, and fully meets the verification regulations specified in thenational standard JJG621-2012. The lower plate of this product is provided with a centering score line to facilitate the placement of the sample. This machine is suitable for the testing of jacks by measurement departments and jack manufacturers.

2. Product introduction

1. The YAW-10000 microcomputer controlled electro-hydraulic servo jack testing machine is composed of a base, a beam, four columns, a feeding trolley, and a transmission device. The frame has high rigidity and strength, and small deformation, which meets the testing requirements of hydraulic jacks. The beam is driven by a motor, and the test space is steplessly adjustable to facilitate test requirements of different heights. The feeding trolley adopts electric mode. The jack is placed on the trolley and pushed into the test space by electric power, which saves time and effort, and is convenient and quick.

2. This product is mainly used for the verification of hydraulic jacks, and fully meets the verification regulations specified in the national standard JJG621-2005.

3. The main specifications of YAW series microcomputer-controlled electro-hydraulic servo jack testing machine are: YAW-3000, YAW-5000, YAW-10000, YAW-20000, YAW-30000, YAW-50000 for selection.

4. The microcomputer-controlled electro-hydraulic servo jack testing machine adopts the under-cylinder type and four-column structure. The frame has high rigidity and strength, small deformation, and the test space is steplessly adjustable, which is convenient for the testing needs of jacks of different heights.

5. Double oil source system is adopted to control the jack and lifting cylinder respectively.

6. The electric feeding trolley mechanism is adopted to facilitate the feeding and withdrawal of the jack.

7. The jack loading and unloading platform is added to reduce the impact on the electric trolley during the jack loading and unloading process.

8. The guide rail adopts a four-cylinder synchronous lifting device, which is convenient for the detection of the jack in place and the exit to the ground.

3. Main technical parameters

1. Maximum bearing capacity: 10000kN, ultimate bearing capacity 12000kN, allowable overload safety factor 1.4;

2. Test adjustment space: 300～1800mm, the distance from the upper pressure plate liner to the lower pressure plate liner, excluding the height of the standard dynamometer;

3. Maximum test space: 1800mm;

4. The net distance between the four columns of the testing machine: 1000mm×600mm;

5. The test space after removing the lead screw (length×width×height): 1000mm×600mm×1800mm;

6. The parallelism between the work surface and the beam pressing plate: ≤0.10/1000;

7. The size of the upper pressure plate (all the effective pressure area): 800mm×800mm×150mm;

8. The size of the lower pressure plate (all the effective pressure area): 800mm×800mm×150mm;

9. The hardness of the upper and lower pressing plates: 55～60HRC, the thickness of the quenched part is not less than 100mm;

10. The lower plate has a centering score line (Ф600mm, Ф400mm, Ф300mm), which is convenient for the placement of the jack sample;

11. The upper and lower pressing plates can be replaced (replace after wear);

12. Coaxiality of upper and lower pressing plates: ≤Ф0.5mm;

13. The thickness of the cushion block is 80mm, and the diameter (Ф270mm, Ф280mm, Ф350mm, Ф380mm) two pieces each;

14. The lifting speed of the beam: 200mm/min;

15. The lifting and lowering of the beam is driven by a motor, and can realize inching and linkage control modes;

16. The lifting and lowering of the beam have upper and lower limit protection respectively;

17. With motor running safety protection, beam travel limit safety protection, sensor safety protection, operator personal safety protection;

18. Whole machine weight: 23 tons.

19. Floor area of the whole machine: 3600mm×2600mm