CN106644549A - Bearing test device of airplane jack and testing method - Google Patents
Bearing test device of airplane jack and testing method Download PDFInfo
- Publication number
- CN106644549A CN106644549A CN201710078793.2A CN201710078793A CN106644549A CN 106644549 A CN106644549 A CN 106644549A CN 201710078793 A CN201710078793 A CN 201710078793A CN 106644549 A CN106644549 A CN 106644549A
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- jack
- aircraft
- bearing
- numerical value
- adjustment block
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- 238000012360 testing method Methods 0.000 title claims abstract description 55
- 238000005303 weighing Methods 0.000 claims abstract description 21
- 238000003466 welding Methods 0.000 claims abstract description 7
- 238000010998 test method Methods 0.000 claims description 9
- 238000003556 assay Methods 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 230000000630 rising effect Effects 0.000 claims description 2
- 239000011800 void material Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 4
- 210000004027 cell Anatomy 0.000 description 26
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/007—Subject matter not provided for in other groups of this subclass by applying a load, e.g. for resistance or wear testing
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a bearing test device of an airplane jack, which is used for testing the bearing capacity of the airplane jack. The bearing test device comprises a cross beam, upright posts, and a bottom plate which are formed to be a testing device frame, wherein the bottom parts of the upright posts installed at both sides of the cross beam are fixedly installed on the ground or a fixing working face through a welding bottom plate; the device further comprises an adjusting block at the lower part of the cross beam and a weighing sensor; the adjusting block installed at the bottom face of the cross beam is aligned to the weighing sensor installed at the bearing end of the airplane jack; the data output end of the weighing sensor is connected with a weighing meter; the device is simple in structure, big in carrying amount and easy to realize. The invention further discloses a bearing testing method of the airplane jack; through installing the bearing testing device, the jack is arranged, and the positions of the jack and the testing device are adjusted so as to test and read; the method is simple in operation, and can better detect if the jack meets the production requirement of the airplane, and improve the production safety of the airplane.
Description
Technical field
The present invention relates to a kind of bearing test device field, more particularly a kind of bearing test device of aircraft jack
And test method.
Background technology
With developing rapidly for aviation industry, the demand of aircraft also increasingly increases, and during Aircraft Production, ensures production people
The safety of member, is the most important condition for improving Aircraft Production.
The aircraft jack in aircraft manufacturing production, is one and commonly uses, and very important instrument, in airplane component
Assembling, in test, aircraft jack is used for the work such as lifting, support, and because aircraft weight is quite big, aircraft jack is held
The power of load is also very big, and overload is prevented in use, ensures the safety of Aircraft Production personnel, and the jack that thus be accordingly used in aircraft is being given birth to
Antenatal, jack needs to carry out bearing test, but existing bearing test can not meet the bearing test of aircraft jack mostly
Require, the safety in production of aircraft so as to strong influence.
The content of the invention
It is an object of the present invention to provide a kind of bearing test device of aircraft jack, by centering examination is arranged on
Adjustment block, gravity sensor under experiment device support body, can be used to measure the maximum bearing capacity of jack, the assay device structure letter
It is single, it is easy to operation.
Further object is that a kind of test method of the bearing test device of aircraft jack is provided, for
The bearing capacity of aircraft jack is big, security incident easily occurs, the test method, can more accurate survey aircraft jack carrying
Amount, judges whether aircraft jack is qualified, improves the safety of aircraft jack.
The present invention is achieved through the following technical solutions：A kind of bearing test device of aircraft jack, for testing aircraft
Jack bearing capacity, including crossbeam, column, the base plate of composition assay device support body, installed in its bottom of the column of crossbeam both sides
It is fixedly mounted on ground or stationary face by the base plate for welding, also including being arranged on the adjustment block of below the crossbeam, weigh
Sensor, the adjustment block for being installed on crossbeam bottom surface and the LOAD CELLS centering for being installed on aircraft jack load-bearing end are arranged, institute
The data output end connection weighing instrument of the LOAD CELLS stated.
The method of aircraft jack bearing test, it is characterised in that：Comprise the following steps：
Step A：Bearing test device is installed；
Step B：Jack, operation jack is disposed to make its push rod rise to close adjustment block in assay device support body lower stable
When stop, by LOAD CELLS centering be arranged on jack push rod；
Step C：Adjustment adjustment block or jack, make the equal centering of push rod of adjustment block, LOAD CELLS, jack；
Step D：Continue to operate jack and data are read by weighing instrument, whether the bearing capacity for detecting jack conforms to
Ask.
A kind of bearing test device of the aircraft jack in the present invention, by the load-bearing end top of jack weighing and sensing is lifted
Device to adjustment Block direction is moved, while being finely adjusted to LOAD CELLS and adjustment block, it is ensured that LOAD CELLS and adjustment block pair
Middle connection, it is continuous to the bottom of LOAD CELLS in jack so as to ensure that the measured value of bearing capacity of jack is more accurate
While applying a power upwards, according to equilibrium principle, testing the adjustment block below support body can simultaneously give LOAD CELLS
Weighing unit applies one and is applied to identical, the in opposite direction power of LOAD CELLS bottom size with mandril of lifting jack, therefore weighs
The carried power in end of weighing of the power that sensor is surveyed extremely jack, wherein, when LOAD CELLS is not in contact with to adjustment block,
The reading of weighing instrument is zero, when LOAD CELLS starts contact adjusting block, with the rising of the push rod of jack, weighing and sensing
The pressure that device is born is increasing, and the reading of weighing instrument is also increasing, and the power surveyed is converted into electricity by LOAD CELLS
Signal sends weighing instrument to, is shown the suffered power in end of weighing of jack by weighing instrument.
In order to preferably realize the present invention, further, a kind of bearing test device of aircraft jack, also including fixation
In the fixed plate of crossbeam bottom, the adjustment block coordinated with fixed sheet separation is installed on crossbeam bottom surface by fixed plate.
In order to preferably realize the present invention, further, the fixed plate arranges step recess, and adjustment block arranges step
Formula convex portion, and step recess and the cooperation of step tab void, are fixed block indirection is adjusted by fixed block with crossbeam, while
There is gap to coordinate between fixed block and adjustment block so that adjustment block can be with left and right fine setting, it is ensured that LOAD CELLS and adjustment block
Centering connects.
In order to preferably realize the present invention, further, a kind of bearing test device of aircraft jack, also including setting
O-ring between adjustment block and LOAD CELLS its weighing unit, the setting of O-ring causes the weighing unit of LOAD CELLS and adjusts
Monoblock is not directly contacted with, and can avoid the generation because eccentric, and damages LOAD CELLS.
In order to preferably realize the present invention, further, a kind of bearing test device of aircraft jack, also including centering
The protective case being arranged on below LOAD CELLS, the setting of protective case facilitates the placement of LOAD CELLS, while protective case can be protected
The push rod of jack during shield test, it is to avoid mandril of lifting jack is damaged.
In order to preferably realize the present invention, further, step D specifically includes following steps：
Step D1：The push rod of jack continues rising makes weighing instrument show numerical value, treats that numerical value reaches jack rated load
During 105%-115%, observation numerical value is to continue with increasing or reduces, execution step D2 if numerical value is increase state, if numerical value is
Reduction state then execution step D3；
Step D2：Whether the overflow valve in the hydraulic system of adjustment jack, observation numerical value reduces, if then when numerical value is reduced to
During jack rated load, closing outflow valve and execution step D4, if otherwise jack is undesirable；
Step D3：Whether the overflow valve in the hydraulic system of adjustment jack, observation numerical value increases, if then when numerical value increases to
During jack rated load, closing outflow valve and execution step D4, if otherwise jack is undesirable；
Step D4：Continue to observe whether numerical value keeps constant, if then jack meets the requirements, can be used to produce, if otherwise thousand
Jin top is undesirable.
In order to preferably realize the present invention, further, step A is specifically referred to：First on solid smooth ground
Four foundation bolts of upper installation, then successively weld crossbeam, column, base plate, and adjustment block passes through step type combination with fixed plate
Connection, and fixed with crossbeam by fixed plate, finally one weighing instrument support is installed away from the side of adjustment block in column, and will
Bearing test device is fixed on solid ground by foundation bolt.
The present invention compared with prior art, with advantages below and beneficial effect：
（1）, a kind of aircraft jack in the present invention bearing test device, during test, by adjustment block all the time to weighing biography
One positive pressure of sensor so that the carrying numerical value of the aircraft jack measured by LOAD CELLS is more accurate.
（2）, this invention also solves the bearing test problem of aircraft jack, larger power can be born, improve test
Safety, and can interpolate that whether jack qualified by the test, improve the safety that jack is used.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is present invention test schematic diagram；
Fig. 3 fixes schematic diagram for base plate during present invention test；
Fig. 4 is test method flow chart of the present invention；
Fig. 5 is test procedure D flow chart of the present invention；
1-crossbeam, 2-fixed plate, 3-adjustment block, 4-O-shaped rubber ring, 5-LOAD CELLS, 6-column, 7-protective case,
8-base plate, 9-support, 10-weighing instrument, 11-push rod, 12-piston rod, 13-main body, 14-hand pump.
Specific embodiment
With reference to the accompanying drawings, the present invention is described in further detail in conjunction with the embodiments, but embodiments of the present invention
Not limited to this.Wherein from start to finish same or similar label represents same or similar element or with same or like function
Element.It is exemplary below with reference to the embodiment of Description of Drawings, is only used for explaining the present invention, and it is not intended that right
The restriction of the present invention.
Embodiment 1：
It is used to test aircraft jack bearing capacity, including crossbeam 1, the column 6, bottom of composition assay device support body with reference to Fig. 1, Fig. 2
Plate 8, is fixedly mounted on ground or stationary face installed in its bottom of the column 6 of the both sides of crossbeam 1 by the base plate 8 of welding,
Also include being arranged on adjustment block 3, the LOAD CELLS 5 of the lower section of crossbeam 1, be installed on the adjustment block 3 of the bottom surface of crossbeam 1 and be installed on winged
The centering of LOAD CELLS 5 at machine jack load-bearing end is arranged, and the data output end of described LOAD CELLS 5 connects weighing instrument
10。
The method of aircraft jack bearing test, it is characterised in that：Comprise the following steps：
Step A：Bearing test device is installed；
Step B：Jack, operation jack is disposed to make its push rod 11 rise to close adjustment in assay device support body lower stable
Stop during block 3, the centering of LOAD CELLS 5 is arranged on into the push rod 11 of jack；
Step C：Adjustment adjustment block 3 or jack, the equal centering of push rod 11 for making adjustment block 3, LOAD CELLS 5, jack is arranged；
Step D：Continue to operate jack and data are read by weighing instrument 10, whether the bearing value for detecting jack conforms to
Ask.
Embodiment 2：
As shown in figure 1, a kind of bearing test device of aircraft jack, for testing aircraft jack bearing capacity, including composition
The crossbeam 1 of assay device support body, column 6, base plate 8, are consolidated installed in its bottom of the column 6 of the both sides of crossbeam 1 by the base plate 8 of welding
Dingan County is mounted on ground or stationary face, also including adjustment block 3, the LOAD CELLS 5 for being arranged on the lower section of crossbeam 1, is installed on
The adjustment block 3 of the bottom surface of crossbeam 1 is arranged with the centering of LOAD CELLS 5 for being installed on aircraft jack load-bearing end, described biography of weighing
The data output end connection weighing instrument 10 of sensor 5.Also include being fixed on the fixed plate 2 of the bottom of crossbeam 1, with the gap of fixed plate 2
The adjustment block 3 of cooperation is installed on the bottom surface of crossbeam 1 by fixed plate 2；The fixed plate 2 arranges step recess, and adjustment block 3 is arranged
Gap between step convex portion, and step recess and step tab void coordinate, described fixed plate 2 and adjustment block 3
For 1.5 ± 0.1mm, so as to being adjustment block 3 and the centering of LOAD CELLS 5；Arrange away from the direction of adjustment block 3 on described column 6
There is the support 9 for installing weighing instrument 10.
Wherein, column 6, crossbeam 1, base plate 8 are welded successively, and the depth of parallelism that two columns 6 are ensured after welding is 0.2mm, and two stand
Post 6 is respectively 0.2mm to the perpendicularity of crossbeam 1, base plate, so as to ensure the intensity of bearing test device, ensures the safety of test；
Fixed plate 2 is connected using the screw of M10 with crossbeam 1；
Described crossbeam 1, column 6 adopt the I-steel of 25a that welding is combined for raw material, are bottom from the steel plate of the thickness of δ 30
The material of plate 8；
Described LOAD CELLS 5 can adopt WTP204 radial LOAD CELLSs, its rated load in 0.5t ~ 100t, this
Load can be adopted in the range of 0.5t ~ 30t in bright, weighing instrument 10 selects XK3101；
The design height of crossbeam 1 should be greater than the minimum constructive height of jack（The push rod of jack is not also raised）, less than jack
Maximum height（The push rod of jack is completely raised）, to ensure that the push rod of jack at the trial can be given between crossbeam 1
Interact, make LOAD CELLS 5 to be in test subject to the positive pressure from adjustment block 3.
Embodiment 3：
As shown in Figure 1 and Figure 2, on the basis of embodiment 2, have additional between adjustment block 3 and LOAD CELLS 5 its weighing unit
O-ring 4, and centering is arranged on the protective case 7 of the lower section of LOAD CELLS 5, the wherein setting of O-ring 4, can avoid because it is eccentric and
LOAD CELLS 5 is caused to be damaged, the setting of protective case 7 can protect the push rod 11 of jack, it is to avoid push rod is received in test
Damage.The other parts of the present embodiment are same as Example 2, therefore repeat no more.
Embodiment 4：
As shown in Figure 2 and Figure 3, the method for aircraft jack bearing test, it is characterised in that：Comprise the following steps：
Step A：Bearing test device is installed；
Step B：Jack, operation jack is disposed to make its push rod 11 rise to close adjustment in assay device support body lower stable
Stop during block 3, the centering of LOAD CELLS 5 is arranged on into the push rod 11 of jack；
Step C：Adjustment adjustment block 3 or jack, the equal centering of push rod 11 for making adjustment block 3, LOAD CELLS 5, jack is arranged；
Step D：Continue to operate jack and data are read by weighing instrument 10, whether the bearing capacity for detecting jack conforms to
Ask.
Step D specifically includes following steps：
Step D1：The push rod 11 of jack continues rising makes weighing instrument 10 show numerical value, treats that numerical value reaches the specified load of jack
During the 105%-115% of lotus, observation numerical value is to continue with increasing or reduces, execution step D2 if numerical value is increase state, if number
It is worth for reduction state then execution step D3；
Step D2：Whether the overflow valve in the hydraulic system of adjustment jack, observation numerical value reduces, if then when numerical value is reduced to
During jack rated load, closing outflow valve and execution step D4, if otherwise jack is undesirable；
Step D3：Whether the overflow valve in the hydraulic system of adjustment jack, observation numerical value increases, if then when numerical value increases to
During jack rated load, closing outflow valve and execution step D4, if otherwise jack is undesirable；
Step D4：Continue to observe whether numerical value keeps constant, if then jack meets the requirements, can be used to produce, if otherwise thousand
Jin top is undesirable.
Step A is specifically referred to：First on solid smooth ground install four foundation bolts, then by crossbeam 1,
Column 6, base plate 8 are welded successively, and adjustment block 3 is connected by step type combination with fixed plate 2 and is consolidated by fixed plate 2 and crossbeam
It is fixed, finally a weighing instrument support 9 is installed away from the side of adjustment block 3 in column 6, and bearing test device is passed through into lower margin spiral shell
Bolt is fixed on solid ground, wherein the installation of foundation bolt, first can bore four holes on test ground, and the diameter in hole can be put
The sweep of lower foundation bolt is advisable, and then foundation bolt is put in hole, then the watering pours water between foundation bolt and hole
Cement mortar, is allowed to become an entirety with original ground, and with this foundation bolt is fixed.
In step B, the stable setting of jack can pass through the wheel of the very heavy top/bottom part of fixation, avoid jack to produce during test
The raw motion relative to ground, so that the reading of LOAD CELLS 5 is inaccurate.
In step B, the jack tested for this is a hand-rail type hydraulic jack, including main body 13, is arranged on main body
Push rod 11 on 13, and the piston rod 12 being enclosed within outside push rod 11, also including a hand pump 14.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (8)
1. a kind of bearing test device of aircraft jack, for testing aircraft jack bearing capacity, including constitutes assay device
The crossbeam of support body（1）, column（6）, base plate（8）, installed in crossbeam（1）The column of both sides（6）The base plate that its bottom passes through welding
（8）It is fixedly mounted on ground or stationary face, it is characterised in that：Also include being arranged on crossbeam（1）The adjustment block of lower section
（3）, LOAD CELLS（5）, it is installed on crossbeam（1）The adjustment block of bottom surface（3）Be installed on weighing for aircraft jack load-bearing end
Sensor（5）Centering is arranged, described LOAD CELLS（5）Data output end connection weighing instrument（10）.
2. the bearing test device of a kind of aircraft jack according to claim 1, it is characterised in that：Also include being fixed on
Crossbeam（1）The fixed plate of bottom（2）, with fixed plate（2）The adjustment block that gap coordinates（3）By fixed plate（2）It is installed on crossbeam
（1）Bottom surface.
3. the bearing test device of a kind of aircraft jack according to claim 2, it is characterised in that：The fixed plate
（2）Step recess, adjustment block are set（3）Step convex portion is set, and step recess coordinates with step tab void.
4. the bearing test device of a kind of aircraft jack according to any one of claim 1-3, it is characterised in that：Also wrap
Include and be arranged on adjustment block（3）With LOAD CELLS（5）O-ring between its weighing unit（4）.
5. the bearing test device of a kind of aircraft jack according to claim 1, it is characterised in that：Also set including centering
Put in LOAD CELLS（5）The protective case of lower section（7）.
6. a kind of bearing test device of aircraft jack according to claim 1 has carried out aircraft jack bearing test
Method, it is characterised in that：Comprise the following steps：
Step A：Bearing test device is installed；
Step B：Jack, operation jack is disposed to make its push rod in assay device support body lower stable（11）Rise to close tune
Monoblock（3）When stop, by LOAD CELLS（5）Centering is arranged on the push rod of jack（11）；
Step C：Adjustment adjustment block（3）Or jack, make adjustment block（3）, LOAD CELLS（5）, jack push rod（11）
Centering is arranged；
Step D：Continue to operate jack and by weighing instrument（10）Data are read, whether the bearing capacity for detecting jack meets
Require.
7. the bearing test method of a kind of aircraft jack according to claim 6, it is characterised in that：The step D tool
Body is comprised the following steps：
Step D1：The push rod of jack（11）Continuing rising makes weighing instrument（10）Numerical value is shown, treats that numerical value reaches jack volume
When determining the 105%-115% of load, observation numerical value is to continue with increasing or reduces, execution step D2 if numerical value is increase state,
Execution step D3 if numerical value is reduction state；
Step D2：Whether the overflow valve in the hydraulic system of adjustment jack, observation numerical value reduces, if then when numerical value is reduced to
During jack rated load, closing outflow valve and execution step D4, if otherwise jack is undesirable；
Step D3：Whether the overflow valve in the hydraulic system of adjustment jack, observation numerical value increases, if then when numerical value increases to
During jack rated load, closing outflow valve and execution step D4, if otherwise jack is undesirable；
Step D4：Continue to observe whether numerical value keeps constant, if then jack meets the requirements, can be used to produce, if otherwise thousand
Jin top is undesirable.
8. the bearing test method of a kind of aircraft jack according to claim 6, it is characterised in that：The step A tool
Body is referred to：Four foundation bolts are installed first on solid smooth ground, then by crossbeam（1）, column（6）, base plate（8）According to
Secondary welding, adjustment block（3）With fixed plate（2）Connected by step type combination and by fixed plate（2）Fix with crossbeam, finally exist
Column（6）Away from adjustment block（3）Side install a weighing instrument support（9）, and bearing test device is passed through into foundation bolt
It is fixed on solid ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710078793.2A CN106644549A (en) | 2017-02-14 | 2017-02-14 | Bearing test device of airplane jack and testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710078793.2A CN106644549A (en) | 2017-02-14 | 2017-02-14 | Bearing test device of airplane jack and testing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106644549A true CN106644549A (en) | 2017-05-10 |
Family
ID=58846147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710078793.2A Pending CN106644549A (en) | 2017-02-14 | 2017-02-14 | Bearing test device of airplane jack and testing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106644549A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112763199A (en) * | 2020-12-28 | 2021-05-07 | 大连长丰实业总公司 | Aircraft jack test bench |
| CN115356195A (en) * | 2022-07-20 | 2022-11-18 | 成都飞机工业（集团）有限责任公司 | Loading device for small part static strength test and use method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2606330Y (en) * | 2002-12-10 | 2004-03-10 | 柳州欧维姆机械有限责任公司 | Hydraulic liftable jack state testing sensor apparatus |
| CN2620863Y (en) * | 2003-05-01 | 2004-06-16 | 柳州欧维姆机械有限责任公司 | Oil pressure detecting system for starting jack |
| CN2852095Y (en) * | 2005-10-31 | 2006-12-27 | 李良 | Jack dynamic load tester |
| CN202928819U (en) * | 2012-11-05 | 2013-05-08 | 济南恒瑞金试验机有限公司 | Jack calibrating apparatus |
| CN206430927U (en) * | 2017-02-14 | 2017-08-22 | 成都飞机工业（集团）有限责任公司 | A kind of bearing test device of aircraft jack |
-
2017
- 2017-02-14 CN CN201710078793.2A patent/CN106644549A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2606330Y (en) * | 2002-12-10 | 2004-03-10 | 柳州欧维姆机械有限责任公司 | Hydraulic liftable jack state testing sensor apparatus |
| CN2620863Y (en) * | 2003-05-01 | 2004-06-16 | 柳州欧维姆机械有限责任公司 | Oil pressure detecting system for starting jack |
| CN2852095Y (en) * | 2005-10-31 | 2006-12-27 | 李良 | Jack dynamic load tester |
| CN202928819U (en) * | 2012-11-05 | 2013-05-08 | 济南恒瑞金试验机有限公司 | Jack calibrating apparatus |
| CN206430927U (en) * | 2017-02-14 | 2017-08-22 | 成都飞机工业（集团）有限责任公司 | A kind of bearing test device of aircraft jack |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112763199A (en) * | 2020-12-28 | 2021-05-07 | 大连长丰实业总公司 | Aircraft jack test bench |
| CN115356195A (en) * | 2022-07-20 | 2022-11-18 | 成都飞机工业（集团）有限责任公司 | Loading device for small part static strength test and use method and application thereof |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170510 |
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| RJ01 | Rejection of invention patent application after publication |