CN109058233A - Hydraulic station special test platform and its test method - Google Patents
Hydraulic station special test platform and its test method Download PDFInfo
- Publication number
- CN109058233A CN109058233A CN201811191861.7A CN201811191861A CN109058233A CN 109058233 A CN109058233 A CN 109058233A CN 201811191861 A CN201811191861 A CN 201811191861A CN 109058233 A CN109058233 A CN 109058233A
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- CN
- China
- Prior art keywords
- hydraulic station
- cylinder
- push rod
- oil
- measured
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 62
- 238000010998 test method Methods 0.000 title claims description 7
- 238000010010 raising Methods 0.000 claims abstract description 40
- 239000002828 fuel tank Substances 0.000 claims abstract description 6
- 239000003921 oil Substances 0.000 claims description 77
- 238000009423 ventilation Methods 0.000 claims description 6
- 239000010720 hydraulic oil Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000004146 energy storage Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 7
- 230000007613 environmental effect Effects 0.000 abstract description 6
- 239000007787 solid Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a kind of hydraulic station special test platforms, including rack, testing jig, accumulator, large tank, distribution box, hydraulic station mounting base, oil cylinder, raising push rod, push rod reset cylinder and hydraulic station pressure release cylinder, hydraulic station to be measured is mounted in hydraulic station mounting base, raising push rod one end connects the piston rod part of hydraulic station to be measured, the piston rod bottom of the other end connection push rod reset cylinder of raising push rod, the piston rod bottom of oil cylinder connects the piston rod connecting pin of raising push rod and hydraulic station to be measured by a cylinder connector, the accumulator connects the oil outlet of oil cylinder by an oil pipe, the piston rod end of hydraulic station pressure release cylinder is directed at the relief valve of hydraulic station to be measured, the drain tap of hydraulic station to be measured connects large tank.The present invention simulates load-carrying using accumulator, while using cylinder reset and pressure release, high degree of automation, test process is safe and reliable, and testing efficiency is high, and high-volume is suitble to test, and the oil of pressure release generation is collected in fuel tank, and the feature of environmental protection is good.
Description
Technical field
The present invention relates to a kind of test device more particularly to a kind of hydraulic station special test platform and its test methods.
Background technique
Hydraulic station usually required before coming into operation to its can raising load tonnage tested it is (as negative in needed to test
Carry 1.2 ton hour raisings not come, 1 ton hour of load is capable of coming for raising), currently, generalling use true load-carrying to test, this kind is tested
Not only test process is inconvenient for mode, but also installs test trouble, and testing efficiency is low, is not suitable for batch testing, it is most important that
It is not safe enough.
Summary of the invention
The present invention provides a kind of using accumulator simulation to solve above-mentioned defect existing in the prior art and deficiency
Load-carrying, using cylinder reset and pressure release, high degree of automation, test process is safe and reliable, and testing efficiency is high, is suitble to large quantities of measurements
Examination, and the oil that pressure release generates collects the good hydraulic station special test platform of the feature of environmental protection and its test method in fuel tank.
Technical solution of the present invention: a kind of hydraulic station special test platform, including rack, the testing jig being mounted on rack,
Accumulator, large tank and distribution box and installation hydraulic station mounting base on the tester rack, oil cylinder, raising push rod, push rod reset
Cylinder and hydraulic station pressure release cylinder, hydraulic station to be measured are mounted in hydraulic station mounting base, and the connection of raising push rod one end is to be measured
The piston rod part of hydraulic station, the piston rod bottom of the other end connection push rod reset cylinder of raising push rod, the piston rod of oil cylinder
Bottom connects the piston rod connecting pin of raising push rod and hydraulic station to be measured by a cylinder connector, and the accumulator passes through an oil pipe
The oil outlet of oil cylinder is connected, the piston rod end of hydraulic station pressure release cylinder is directed at the relief valve of hydraulic station to be measured, hydraulic station to be measured
Drain tap connect large tank.
The present invention simulates load-carrying using accumulator, while using cylinder reset and pressure release, high degree of automation, test process
Securely and reliably, testing efficiency is high, and high-volume is suitble to test, and the oil that pressure release generates is collected in fuel tank, and the feature of environmental protection is good.
Preferably, the testing jig bottom is equipped with an oil box, the oil inlet of the drain tap connection oil box of hydraulic station to be measured, oil
The oil outlet of box connects large tank by connecting tube, and the pressure gauge of test oil cylinder working-pressure is equipped at the top of the oil cylinder.
The oil that this kind of structure generates hydraulic station pressure release to be measured first passes through oil box collection and enters back into large tank, into
One step ensures the feature of environmental protection；The setting of pressure gauge makes it possible to the pressure at preferably detection oil cylinder.
Preferably, the testing jig includes bottom plate, top plate and two side plates, the hydraulic station mounting base and hydraulic station pressure release
Cylinder is each attached on bottom plate, and the oil cylinder and push rod reset cylinder are each attached on top plate.
This kind of structure ensures that the sound construction of testing jig is reliable, and ensure hydraulic station mounting base, hydraulic station pressure release cylinder,
Oil cylinder and push rod reset cylinder are rationally distributed, solid and reliable.
Preferably, the accumulator is fixed on rack by an accumulator fixing seat, and the hydraulic station pressure release cylinder is logical
A cylinder frame is crossed to be fixed on bottom plate.
This kind of structure further ensures that the solid and reliable of accumulator and hydraulic station pressure release cylinder.
Preferably, the raising push rod connects the piston rod bottom of push rod reset cylinder, the liquid by a cylinder connector
The piston rod end of pressure station pressure release cylinder is equipped with the pressure head for cooperating the relief valve of hydraulic station to be measured, and the top plate bottom is additionally provided with one
The push rod leading truck being oriented to raising push rod.
This kind of structure ensures the firm and reliable connection of raising push rod and push rod reset cylinder, while ensuring the liter of raising push rod
Drop is steady reliable.
Preferably, the rack top is equipped with outline border, the testing jig, accumulator, hydraulic station mounting base, oil cylinder, raising
Push rod, push rod reset cylinder and hydraulic station pressure release cylinder are respectively positioned in outline border, and switch button is equipped on the outside of the outline border.
This kind of structure further ensures that its action stability, property easy to use and safety.
Preferably, the large tank is mounted on rack bottom by a tank support, and the distribution box is mounted in rack
Portion side, the switch button connect distribution box by electric wire, and the distribution box is separately connected the solenoid valve of hydraulic station to be measured, pushes away
The solenoid valve of bar reset cylinder and the solenoid valve of hydraulic station pressure release cylinder.
This kind of structure ensures the solid and reliable of large tank, and the installation site of distribution box is suitable, at the same ensure switch by
The motion stability that button controls all parts is reliable.
Preferably, the oil outlet of the oil cylinder is equipped with the first port connection of cooperation oil pipe, the oil inlet of the accumulator
Mouth is equipped with the second port connection of cooperation oil pipe.
It is steadily reliable that this kind of structure ensures that the hydraulic oil of oil cylinder enters accumulator.
A kind of test method of hydraulic station special test platform, steps are as follows:
1) hydraulic station to be measured is mounted in hydraulic station mounting base, the piston rod raising of hydraulic station energization hydraulic station passes through
It rises push rod and withstands cylinder connector, compression cylinder；
2) in-oil cylinder hydraulic oil is compressed in accumulator, as the piston rod raising of hydraulic station is higher, in accumulator
Pressure is higher, adjusts the overflow valve in hydraulic station, until energy storage pressure reaches corresponding pressure value；
3) after the completion of testing, hydraulic station pressure release cylinder ventilation movement, the piston rod end of hydraulic station relief valve is withstood hydraulic
The relief valve stood carries out pressure release；
4) then push rod reset cylinder ventilation movement, subdues the piston rod of hydraulic station to be measured by raising push rod, lets out
Pressure is completed, and is come out in oil stream to large tank from the drain tap of hydraulic station to be measured.
The present invention simulates load-carrying using accumulator, while using cylinder reset and pressure release, high degree of automation, test process
Securely and reliably, testing efficiency is high, and high-volume is suitble to test, and the oil that pressure release generates is collected in fuel tank, and the feature of environmental protection is good.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is side schematic view of the invention；
1. rack in figure, 2. hydraulic station mounting bases, 3. testing jigs, 4. hydraulic stations to be measured, 5. raising push rods, 6. oil cylinders connect
Head, 7. oil cylinders, 8. switch buttons, 9. pressure gauges, 10. first port connections, 11. push rod reset cylinders, 12. cylinder connectors, 13.
Hydraulic station pressure release cylinder, 14. oil boxs, 15. distribution boxs, 16. accumulator fixing seats, 17. accumulators, 18. oil pipes, 19. connecting tubes,
20. large tank, 21. top plates, 22. bottom plates, 23. side plates, 24. outline borders, 25. second hydraulic fluid ports, 26. push rod leading trucks, 27. cylinders
Frame, 28. pressure heads, 29. tank supports.
Specific embodiment
The invention will now be described in further detail with reference to the accompanying drawings, but is not the limit to the scope of the present invention
System.
As illustrated in fig. 1 and 2, a kind of hydraulic station special test platform including rack 1, the testing jig being mounted on rack 13, stores
Can device 17, large tank 20 and distribution box 15 and the hydraulic station mounting base 2 being mounted on testing jig 3, oil cylinder 7, raising push rod 5,
Push rod reset cylinder 11 and hydraulic station pressure release cylinder 13, hydraulic station 4 to be measured are mounted in hydraulic station mounting base 2, raising push rod 5 one
End connects the piston rod part of hydraulic station 4 to be measured, the piston rod bottom of the other end connection push rod reset cylinder 11 of raising push rod 5
Portion, the piston rod bottom of oil cylinder 7 connect the piston rod connecting pin of raising push rod 5 and hydraulic station 4 to be measured by a cylinder connector 6,
Accumulator 17 connects the oil outlet of oil cylinder 7 by an oil pipe 18, and the piston rod end of hydraulic station pressure release cylinder 13 is directed at prepare liquid
The drain tap of the relief valve at pressure station 4, hydraulic station 4 to be measured connects large tank 20.3 bottom of testing jig is equipped with an oil box 14, prepare liquid
The oil inlet of the drain tap connection oil box 14 at pressure station 4, the oil outlet of oil box 14 connect large tank 20, oil cylinder 7 by connecting tube 19
Top is equipped with the pressure gauge 9 of test 7 pressure of oil cylinder.Testing jig 3 includes bottom plate 22, top plate 21 and two side plates 23, hydraulic station peace
Dress seat 2 and hydraulic station pressure release cylinder 13 are each attached on bottom plate 22, and oil cylinder 7 and push rod reset cylinder 11 are each attached to top plate 21
On.Accumulator 17 is fixed on rack 1 by an accumulator fixing seat 16, and hydraulic station pressure release cylinder 13 is solid by a cylinder frame 27
It is scheduled on bottom plate 22.Raising push rod 5 connects the piston rod bottom of push rod reset cylinder 11 by a cylinder connector 12, and hydraulic station is let out
The piston rod end of air cylinder 13 is equipped with the pressure head 28 for cooperating the relief valve of hydraulic station 4 to be measured, 21 bottom of top plate be additionally provided with one to
The push rod leading truck 26 of raising push rod guiding 5.1 top of rack is equipped with outline border 24, testing jig 3, accumulator 17, hydraulic station mounting base
2, oil cylinder 7, raising push rod 5, push rod reset cylinder 11 and hydraulic station pressure release cylinder 13 are respectively positioned in outline border 24, are set on the outside of outline border 24
There is switch button 8.Large tank 20 is mounted on 1 bottom of rack by a tank support 29, and distribution box 15 is mounted on 1 middle part one of rack
Side, switch button 8 connect distribution box 15 by electric wire, and distribution box 15 is separately connected the solenoid valve of hydraulic station 4 to be measured, push rod resets
The solenoid valve of cylinder 11 and the solenoid valve of hydraulic station pressure release cylinder 13.The oil outlet of oil cylinder 7 is equipped with the first of cooperation oil pipe 18
Port connection 10, the oil inlet of accumulator 17 are equipped with the second port connection 25 of cooperation oil pipe 18.
A kind of test method of hydraulic station special test platform, steps are as follows:
1) hydraulic station to be measured is mounted in hydraulic station mounting base, the piston rod raising of hydraulic station energization hydraulic station passes through
It rises push rod and withstands cylinder connector, compression cylinder；
2) in-oil cylinder hydraulic oil is compressed in accumulator, as the piston rod raising of hydraulic station is higher, in accumulator
Pressure is higher, adjusts the overflow valve in hydraulic station, until energy storage pressure reaches corresponding pressure value；
3) after the completion of testing, hydraulic station pressure release cylinder ventilation movement, the piston rod end of hydraulic station relief valve is withstood hydraulic
The relief valve stood carries out pressure release；
4) then push rod reset cylinder ventilation movement, subdues the piston rod of hydraulic station to be measured by raising push rod, lets out
Pressure is completed, and is come out in oil stream to large tank from the drain tap of hydraulic station to be measured.
It is 1.2 when accumulator corresponds to load-carrying if the hydraulic station of present invention test is the hydraulic station that can rise 1 load-carrying
Immediately, it can not just rise.
Oil cylinder, push rod reset cylinder, hydraulic station pressure release cylinder, distribution box and accumulator in the present invention are market buying
Conventional components, therefore do not state carefully.
The present invention simulates load-carrying using accumulator, while using cylinder reset and pressure release, high degree of automation, test process
Securely and reliably, testing efficiency is high, and high-volume is suitble to test, and the oil that pressure release generates is collected in fuel tank, and the feature of environmental protection is good.
Claims (9)
1. a kind of hydraulic station special test platform, it is characterised in that: it include rack, the testing jig being mounted on rack, accumulator,
Hydraulic station mounting base, oil cylinder, raising push rod, push rod reset cylinder and the liquid of large tank and distribution box and installation on the tester rack
Pressure station pressure release cylinder, hydraulic station to be measured are mounted in hydraulic station mounting base, and raising push rod one end connects hydraulic station to be measured
Piston rod part, the piston rod bottom of the other end connection push rod reset cylinder of raising push rod, the piston rod bottom of oil cylinder passes through
One cylinder connector connects the piston rod connecting pin of raising push rod and hydraulic station to be measured, and the accumulator connects oil cylinder by an oil pipe
Oil outlet, the piston rod end of hydraulic station pressure release cylinder is directed at the relief valve of hydraulic station to be measured, the drain tap of hydraulic station to be measured
Connect large tank.
2. a kind of hydraulic station special test platform according to claim 1, it is characterised in that: the testing jig bottom is equipped with one
Oil box, the oil inlet of the drain tap connection oil box of hydraulic station to be measured, the oil outlet of oil box connects large tank by connecting tube, described
The pressure gauge of test oil cylinder working-pressure is equipped at the top of oil cylinder.
3. a kind of hydraulic station special test platform according to claim 1, it is characterised in that: the testing jig include bottom plate,
Top plate and two side plates, the hydraulic station mounting base and hydraulic station pressure release cylinder are each attached on bottom plate, the oil cylinder and push rod
Reset cylinder is each attached on top plate.
4. a kind of hydraulic station special test platform according to claim 3, it is characterised in that: the accumulator passes through an accumulation of energy
Device fixing seat is fixed on rack, and the hydraulic station pressure release cylinder is fixed on bottom plate by a cylinder frame.
5. a kind of hydraulic station special test platform according to claim 4, it is characterised in that: the raising push rod passes through a gas
Cylinder connector connects the piston rod bottom of push rod reset cylinder, and it is to be measured that the piston rod end of the hydraulic station pressure release cylinder is equipped with cooperation
The pressure head of the relief valve of hydraulic station, the top plate bottom are additionally provided with a push rod leading truck being oriented to raising push rod.
6. a kind of hydraulic station special test platform according to claim 3, it is characterised in that: the rack top is equipped with outer
Frame, the testing jig, accumulator, hydraulic station mounting base, oil cylinder, raising push rod, push rod reset cylinder and hydraulic station pressure release cylinder
It is respectively positioned in outline border, switch button is equipped on the outside of the outline border.
7. a kind of hydraulic station special test platform according to claim 6, it is characterised in that: the large tank passes through a fuel tank
Bracket is mounted on rack bottom, and the distribution box is mounted on side in the middle part of rack, and the switch button connects distribution by electric wire
Case, the distribution box are separately connected the solenoid valve of hydraulic station to be measured, the solenoid valve of push rod reset cylinder and hydraulic station pressure release cylinder
Solenoid valve.
8. a kind of hydraulic station special test platform according to claim 1, it is characterised in that: set on the oil outlet of the oil cylinder
There is the first port connection of cooperation oil pipe, the oil inlet of the accumulator is equipped with the second port connection of cooperation oil pipe.
9. a kind of test method of hydraulic station special test platform as described in claim 1, it is characterised in that: its step are as follows:
1) hydraulic station to be measured is mounted in hydraulic station mounting base, the piston rod raising of hydraulic station energization hydraulic station passes through lifting push
Bar withstands cylinder connector, compression cylinder；
2) in-oil cylinder hydraulic oil is compressed in accumulator, as the piston rod raising of hydraulic station is higher, pressure in accumulator
It is higher, the overflow valve in hydraulic station is adjusted, until energy storage pressure reaches corresponding pressure value；
3) after the completion of testing, hydraulic station pressure release cylinder ventilation movement, hydraulic station is withstood in the piston rod end of hydraulic station relief valve
Relief valve carries out pressure release；
4) then push rod reset cylinder ventilation movement, subdues the piston rod of hydraulic station to be measured by raising push rod, pressure release is complete
At being come out in oil stream to large tank from the drain tap of hydraulic station to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811191861.7A CN109058233A (en) | 2018-10-12 | 2018-10-12 | Hydraulic station special test platform and its test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811191861.7A CN109058233A (en) | 2018-10-12 | 2018-10-12 | Hydraulic station special test platform and its test method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109058233A true CN109058233A (en) | 2018-12-21 |
Family
ID=64764938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811191861.7A Pending CN109058233A (en) | 2018-10-12 | 2018-10-12 | Hydraulic station special test platform and its test method |
Country Status (1)
| Country | Link |
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| CN (1) | CN109058233A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022393A (en) * | 2019-12-04 | 2020-04-17 | 安徽爱瑞特新能源专用汽车股份有限公司 | A hydraulic station inspection tool |
| CN111677720A (en) * | 2020-06-29 | 2020-09-18 | 昆山奇力特油缸液压设备有限公司 | A leak test device for oil cylinders |
| CN118066185A (en) * | 2024-04-25 | 2024-05-24 | 沂水众鑫机械有限公司 | Pressure test device and method for hydraulic cylinder |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2203698A1 (en) * | 1972-01-27 | 1973-08-02 | Schenck Gmbh Carl | HYDRAULIC TESTING MACHINE |
| CN201531488U (en) * | 2009-11-10 | 2010-07-21 | 金利红 | Vacuum unloading combination valve |
| CN103644151A (en) * | 2013-12-05 | 2014-03-19 | 燕山大学 | Energy-conservation and low-impact hydraulic cylinder test testbed hydraulic control system |
| CN205117878U (en) * | 2015-10-19 | 2016-03-30 | 广州市广材试验仪器有限公司 | Quick resetting means of hydro -cylinder |
| CN105889607A (en) * | 2016-06-21 | 2016-08-24 | 佛山市南海金刚新材料有限公司 | Ultrahigh pressure release valve |
| CN205663681U (en) * | 2016-06-14 | 2016-10-26 | 范荣华 | Portable hydraulic cylinder test machine |
| CN205780048U (en) * | 2016-07-11 | 2016-12-07 | 郑得川 | A kind of hydraulic cylinder intensity detecting device |
| WO2017129293A1 (en) * | 2016-01-25 | 2017-08-03 | Primetals Technologies Germany Gmbh | Simple leakage detection in a hydraulic cylinder unit |
| CN208778394U (en) * | 2018-10-12 | 2019-04-23 | 杭州先力液压机械有限公司 | A kind of hydraulic station special test platform |
-
2018
- 2018-10-12 CN CN201811191861.7A patent/CN109058233A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2203698A1 (en) * | 1972-01-27 | 1973-08-02 | Schenck Gmbh Carl | HYDRAULIC TESTING MACHINE |
| CN201531488U (en) * | 2009-11-10 | 2010-07-21 | 金利红 | Vacuum unloading combination valve |
| CN103644151A (en) * | 2013-12-05 | 2014-03-19 | 燕山大学 | Energy-conservation and low-impact hydraulic cylinder test testbed hydraulic control system |
| CN205117878U (en) * | 2015-10-19 | 2016-03-30 | 广州市广材试验仪器有限公司 | Quick resetting means of hydro -cylinder |
| WO2017129293A1 (en) * | 2016-01-25 | 2017-08-03 | Primetals Technologies Germany Gmbh | Simple leakage detection in a hydraulic cylinder unit |
| CN205663681U (en) * | 2016-06-14 | 2016-10-26 | 范荣华 | Portable hydraulic cylinder test machine |
| CN105889607A (en) * | 2016-06-21 | 2016-08-24 | 佛山市南海金刚新材料有限公司 | Ultrahigh pressure release valve |
| CN205780048U (en) * | 2016-07-11 | 2016-12-07 | 郑得川 | A kind of hydraulic cylinder intensity detecting device |
| CN208778394U (en) * | 2018-10-12 | 2019-04-23 | 杭州先力液压机械有限公司 | A kind of hydraulic station special test platform |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022393A (en) * | 2019-12-04 | 2020-04-17 | 安徽爱瑞特新能源专用汽车股份有限公司 | A hydraulic station inspection tool |
| CN111677720A (en) * | 2020-06-29 | 2020-09-18 | 昆山奇力特油缸液压设备有限公司 | A leak test device for oil cylinders |
| CN118066185A (en) * | 2024-04-25 | 2024-05-24 | 沂水众鑫机械有限公司 | Pressure test device and method for hydraulic cylinder |
| CN118066185B (en) * | 2024-04-25 | 2024-07-23 | 沂水众鑫机械有限公司 | Pressure test device and method for hydraulic cylinder |
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Address after: 311118 building 1-1, No. 13, Xinghu Road, Huanghu Town, Yuhang District, Hangzhou City, Zhejiang Province Applicant after: Hangzhou Xianli Hydraulic Technology Co.,Ltd. Address before: 311118, No. 1-3, No. 15, Xing Hu Road, Huang Hu Town, Yuhang District, Zhejiang, Hangzhou Applicant before: HANGZHOU XIANLI HYDRAULIC MACHINERY Co.,Ltd. |
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Effective date of registration: 20221114 Address after: 313117 South Taihu Youth Science and technology entrepreneurship Park, Meishan Town, Changxing County, Huzhou City, Zhejiang Province Applicant after: Zhejiang ingenuity Hydraulic Technology Co.,Ltd. Address before: 311118 building 1-1, 13 Xinghu Road, Huanghu Town, Yuhang District, Hangzhou City, Zhejiang Province Applicant before: Hangzhou Xianli Hydraulic Technology Co.,Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181221 |