CN108444686B - A kind of ring flange stretch bending turns round the more bolts of Combined Loading and loosens testing machine - Google Patents
A kind of ring flange stretch bending turns round the more bolts of Combined Loading and loosens testing machine Download PDFInfo
- Publication number
- CN108444686B CN108444686B CN201810229486.4A CN201810229486A CN108444686B CN 108444686 B CN108444686 B CN 108444686B CN 201810229486 A CN201810229486 A CN 201810229486A CN 108444686 B CN108444686 B CN 108444686B
- Authority
- CN
- China
- Prior art keywords
- test specimen
- bearing
- fixed
- ring flange
- grip block
- 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.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 72
- 238000005452 bending Methods 0.000 title claims abstract description 15
- 230000008878 coupling Effects 0.000 claims description 17
- 238000010168 coupling process Methods 0.000 claims description 17
- 238000005859 coupling reaction Methods 0.000 claims description 17
- 206010053682 Brachycephaly Diseases 0.000 claims description 10
- 208000009283 Craniosynostoses Diseases 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 2
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 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
- G01M13/00—Testing of machine parts
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The more bolts of Combined Loading are turned round the present invention provides a kind of ring flange stretch bending and loosen testing machine, stretch bending can be applied to more bolted flange disks simultaneously and be turned round combined load, research bolt loosens the testing machine of characteristic, belongs to mechanical test equipment technical field.The ring flange stretch bending turns round the more bolts of Combined Loading and loosens testing machine, use the transverse load of threephase asynchronous machine generation as the bending load applied to ring flange, drag load of the pulling force for using hydraulic screw extractor to generate as axial direction, use the torque of servo motor generation as the torque load applied to ring flange, the device that can apply two combined loads for single bolt before being different from can apply three kinds of combined loads to how bolted ring flange.Three kinds of combined loads can be mutually isolated open by the present invention, not interfere with each other.And the magnitude of load that real-time display is applied.
Description
Technical field
The invention belongs to mechanical test equipment technical field, it is related to a kind of ring flange stretch bending and turns round the more bolts of Combined Loading loosening
Testing machine.
Background technique
Bolt, which loosens testing machine, can be used to study the case where bolt loosens in load bearing situation, use now
Bolt is loaded loosen testing machine be divided into it is following several:
It 1, is that Junker formula loosens test method
Such as GB/T 10431-2008.Junker formula loosens testing machine mainly by applying to the fastener for adding pretightning force
The transverse load of alternation is allowed to generate transverse shifting.This transverse shifting makes to wave relatively between bolt and nut, so as to cause more
The big microcosmic sliding in thread contact face makes fastener occur pine rapidly and turns.It can be quickly than previous any test method(s)
Turn fastener pine.
2, electric-liquid servo controlled type vibratory drilling method
Subject fastener is tightened on clamping rack when test, and generates defined pretightning force, passes through servo hydraulic cylinder
Make to generate alternation lateral displacement between two clamped metal plates, clamping force is caused to reduce, or even loses.Continuous record clamping force
It is instantaneous, judge the anti-loosening property of fastener by comparing.
3, NAS vibration test
Test specimen is tightened in test sleeve, and makes position mark on part and sleeve, sleeve is then placed in vibration
It is reciprocating on dynamic test platform.After booting, the both ends of sleeve reciprocating impact guide groove in guide groove generate biggish impact force,
Test specimen is caused to loosen.Timing outage record test specimen change in location during the test, and the anti-loosening property of test specimen is determined accordingly.
The above experimental bench none be not loosen testing stand for single bolt, and the load born is single, but
It analyzes in more bolt arrangements such as ring flange, due to the presence to interact between bolt, the load on bolt can not be simply accurate
Ground it is equivalent on single bolt, and bolt in actual use, in the case where being related to more bolts, load generally compared with
For complexity.Not single transverse load, therefore this testing stand is designed, it can effectively simulate the reality of multibolt flange disk
Loading conditions, it is properer obtain each bolt when more bolts are load bearing loosen situation.It is loosened at present in more bolts
It there is no related patents in terms of testing machine.
Summary of the invention
The more bolts of Combined Loading, which are turned round, the object of the present invention is to provide a kind of ring flange stretch bending loosens testing machine, it can be simultaneously
Stretch bending is applied to more bolted flange disks and turns round combined load, research bolt loosens the testing machine of characteristic.
Technical solution of the present invention:
A kind of ring flange stretch bending turns round the more bolts of Combined Loading and loosens testing machine, is made of three parts, respectively axial to carry
Lotus transmitting portions, transverse load transmitting portions and torque load transmitting portions；
The axial load transmitting portions include lower grip block 18, thin test specimen 19, thick test specimen 20, test specimen bolt 21, axis
Hold lid 23, thrust ball bearing 24, upper grip block 25, axially loaded support 26 and hydraulic screw extractor 27；18 He of lower grip block
Axially loaded support 26 is each attached on base station 35；The thin test specimen 19 with it is thick 20 seam allowance of test specimen is corresponding is assembled together, it is logical
It crosses test specimen bolt 21 and is assemblied in fixation in corresponding bolt hole；Thin test specimen 19 and thick test specimen 20 be mounted as a whole on lower grip block 18 with it is upper
Between grip block 25, the outer-hexagonal of the thin test specimen 19 is mounted in the interior hexagonal of lower grip block 18, and uses hexagon socket head cap screw
It is fixed；20 end of thick test specimen is mounted in 25 inner ring of grip block, and is fixed with hexagon socket head cap screw；The bearing cap
23 pass through upper grip block 25, and thrust ball bearing 24 is clipped between bearing cap 23 and upper grip block 25；The hydraulic screw extractor
27 oil pressure starting handle one end is placed in the cylinder in axially loaded support 26, and pawl hooks thereon catch on 23 edge of bearing cap；
The transverse load transmitting portions include eccentric shaft coupling 1, camshaft 2, end cap 3, cam link 4, swivel pin
5, U type connecting rod 6, first straight line bearing 7-1, second straight line bearing 7-2, the first support plate 8-1, the second support plate 8-2, the first Ф
8.5 pin 9-1,8.5 pin 9-2 of the 2nd Ф, 8.5 pin 9-3 of the 3rd Ф, elastic rod 10, brachycephaly screw element 11, ring 12, S are adjusted
Type pillar tension sensor 13, long head thread part 14, swivel head 15, tension board 16, limit plate 17 and threephase asynchronous machine 34；Institute
The first support plate 8-1, the second support plate 8-2 and the threephase asynchronous machine 34 stated are each attached on base station 35；The eccentric connection
1 one end of axis device is fixed on the motor shaft of threephase asynchronous machine 34, and the other end is fixed together with camshaft 2；The cam
Axis 2 is linked together with cam link 4 by ball bearing, and with 3 sealing and dustproof of end cap；The cam link 4 and U-shaped company
Bar 6 is connected with swivel pin 5；The first straight line bearing 7-1 is fixed in the first support plate 8-1, and U type connecting rod 6 passes through first
Linear bearing 7-1；Described 10 one end of elastic rod is hinged with 8.5 pin 9-1 of the first Ф and U type connecting rod 6, the other end and brachycephaly spiral shell
One end of line part 11 is hinged by 8.5 pin 9-2 of the 2nd Ф；The other end and S type pillar pulling force of the brachycephaly screw element 11
The connection of 13 threaded one end of sensor, and the installation and adjustment ring 12 that is situated between, the other end and length of S type pillar tension sensor 13
The threaded one end of head thread part 14 connects；The second straight line bearing 7-2 is fixed in the second support plate 8-2, long head thread
The other end of part 14 passes through second straight line bearing 7-2, hinged with 8.5 pin 9-3 of the 3rd Ф with swivel head 15；The swivel head
15 are placed in the U-type groove of tension board 16, limit movement of the swivel head 15 in the U-type groove of tension board 16 by limit plate 17；Institute
16 sets of the tension board stated on thick 20 axis of test specimen；
The torque load transmitting portions include toggle 22, retarder support frame 28, guide rail slide block 29, bearing outside
30, torque eccentric shaft coupling 31, retarder 32 and servo motor 33；The retarder support frame 28 is fixed on base station 35,
The external retarder 32 of servo motor 33 is fixed on jointly on retarder support frame 28；The output shaft and torque of the retarder 32
Eccentric shaft coupling 31 links together, and torque eccentric shaft coupling 31 is fixed together with 30 upper surface of bearing outside, bearing outside
30 lower end surfaces are fixed on the sliding block of guide rail slide block 29, and the guide rail of guide rail slide block 29 is fixed on toggle 22, are set on toggle 22
There is an end cap of hexagon socket head on the outer-hexagonal of thick test specimen 20, is located on tension board 16.
Beneficial effects of the present invention: three kinds of combined loads can be mutually isolated open by the present invention, not interfere with each other, and in real time
Show applied magnitude of load.
Detailed description of the invention
Fig. 1 is the trimetric drawing of testing stand.
In figure: 1 eccentric shaft coupling；2 camshafts；3 end caps；4 cam links；5 swivel pins；6U type connecting rod；7-1 first straight line
Bearing；7-2 second straight line bearing；The first support plate of 8-1；The second support plate of 8-2；8.5 pin of the first Ф of 9-1；The 2nd Ф of 9-2
8.5 pin；8.5 pin of the 3rd Ф of 9-3；10 elastic rods；11 brachycephaly screw elements；12 adjust ring；13S type pillar tension sensor；
14 long head thread parts；15 swivel heads；16 tension boards；17 limit plates；8 lower grip blocks；19 thin test specimens；20 thick test specimens；21 test specimen spiral shells
Bolt；22 toggles；23 bearing caps；24 thrust ball bearings；Grip block on 25；26 axially loaded supports；27 hydraulic screw extractors；28 slow down
Device support frame；29 guide rails add sliding block；30 bearing outsides；31 torque eccentric shaft couplings；32 retarders；33 servo motors；34 three-phases
Asynchronous machine；35 base stations.
Specific embodiment
Below in conjunction with attached drawing and technical solution, a specific embodiment of the invention is further illustrated.
As shown in Figure 1:
A kind of ring flange stretch bending turns round the more bolts of Combined Loading and loosens testing machine, is made of three parts, respectively axial to carry
Lotus transmitting portions, transverse load transmitting portions and torque load transmitting portions；
The axial load transmitting portions include lower grip block 18, thin test specimen 19, thick test specimen 20, test specimen bolt 21, axis
Hold lid 23, thrust ball bearing 24, upper grip block 25, axially loaded support 26 and hydraulic screw extractor 27；18 He of lower grip block
Axially loaded support 26 is each attached on base station 35；The thin test specimen 19 with it is thick 20 seam allowance of test specimen is corresponding is assembled together, it is logical
It crosses test specimen bolt 21 and is assemblied in fixation in corresponding bolt hole；Thin test specimen 19 and thick test specimen 20 be mounted as a whole on lower grip block 18 with it is upper
Between grip block 25, the outer-hexagonal of the thin test specimen 19 is mounted in the interior hexagonal of lower grip block 18, and uses hexagon socket head cap screw
It is fixed；20 end of thick test specimen is mounted in 25 inner ring of grip block, and is fixed with hexagon socket head cap screw；The bearing cap
23 pass through upper grip block 25, and thrust ball bearing 24 is clipped between bearing cap 23 and upper grip block 25；The hydraulic screw extractor
27 oil pressure starting handle one end is placed in the cylinder in axially loaded support 26, and pawl hooks thereon catch on 23 edge of bearing cap；
The transverse load transmitting portions include eccentric shaft coupling 1, camshaft 2, end cap 3, cam link 4, swivel pin
5, U type connecting rod 6, first straight line bearing 7-1, second straight line bearing 7-2, the first support plate 8-1, the second support plate 8-2, the first Ф
8.5 pin 9-1,8.5 pin 9-2 of the 2nd Ф, 8.5 pin 9-3 of the 3rd Ф, elastic rod 10, brachycephaly screw element 11, ring 12, S are adjusted
Type pillar tension sensor 13, long head thread part 14, swivel head 15, tension board 16, limit plate 17 and threephase asynchronous machine 34；Institute
The first support plate 8-1, the second support plate 8-2 and the threephase asynchronous machine 34 stated are each attached on base station 35；The eccentric connection
1 one end of axis device is fixed on the motor shaft of threephase asynchronous machine 34, and the other end is fixed together with camshaft 2；The cam
Axis 2 is linked together with cam link 4 by ball bearing, and with 3 sealing and dustproof of end cap；The cam link 4 and U-shaped company
Bar 6 is connected with swivel pin 5；The first straight line bearing 7-1 is fixed in the first support plate 8-1, and U type connecting rod 6 passes through first
Linear bearing 7-1；Described 10 one end of elastic rod is hinged with 8.5 pin 9-1 of the first Ф and U type connecting rod 6, the other end and brachycephaly spiral shell
One end of line part 11 is hinged by 8.5 pin 9-2 of the 2nd Ф；The other end and S type pillar pulling force of the brachycephaly screw element 11
The connection of 13 threaded one end of sensor, and the installation and adjustment ring 12 that is situated between, the other end and length of S type pillar tension sensor 13
The threaded one end of head thread part 14 connects；The second straight line bearing 7-2 is fixed in the second support plate 8-2, long head thread
The other end of part 14 passes through second straight line bearing 7-2, hinged with 8.5 pin 9-3 of the 3rd Ф with swivel head 15；The swivel head
15 are placed in the U-type groove of tension board 16, limit movement of the swivel head 15 in the U-type groove of tension board 16 by limit plate 17；Institute
16 sets of the tension board stated on thick 20 axis of test specimen；
The torque load transmitting portions include toggle 22, retarder support frame 28, guide rail slide block 29, bearing outside
30, torque eccentric shaft coupling 31, retarder 32 and servo motor 33；The retarder support frame 28 is fixed on base station 35,
The external retarder 32 of servo motor 33 is fixed on jointly on retarder support frame 28；The output shaft and torque of the retarder 32
Eccentric shaft coupling 31 links together, and torque eccentric shaft coupling 31 is fixed together with 30 upper surface of bearing outside, bearing outside
30 lower end surfaces are fixed on the sliding block of guide rail slide block 29, and the guide rail of guide rail slide block 29 is fixed on toggle 22, are set on toggle 22
There is an end cap of hexagon socket head on the outer-hexagonal of thick test specimen 20, is located on tension board 16.
A kind of ring flange stretch bending torsion more bolts of Combined Loading loosen the experimental method of testing machine, and steps are as follows:
(1) pressurize to hydraulic screw extractor 27, the oil pressure starting handle of hydraulic screw extractor 27 stretches out, drive the pawl hooks of hydraulic screw extractor 27 to
Upper movement, oil pressure starting handle resist axially loaded support 26, and pawl hooks hook tight 23 edge of bearing cap, to generate the drawing of an axial direction
Power.
(2) start threephase asynchronous machine 34, due to the presence of 1 eccentricity of eccentric shaft coupling, the rotation of motor can be defeated
Periodical transverse load out will not there is a situation where motor lockings due to the presence of elastic rod 10.
(3) starting servo motor 33 can make torsion arm swing due to the presence of 31 eccentricity of torque eccentric shaft coupling, from
And apply the torque load of circulation to thick test specimen.
Claims (2)
1. a kind of ring flange stretch bending turns round the more bolts of Combined Loading and loosens testing machine, which is characterized in that the ring flange stretch bending is turned round
The more bolts of Combined Loading loosen testing machine and are made of three parts, respectively axial load transmitting portions, transverse load transfer part
Divide and torque load transmitting portions；
The axial load transmitting portions include lower grip block (18), thin test specimen (19), thick test specimen (20), test specimen bolt
(21), bearing cap (23), thrust ball bearing (24), upper grip block (25), axially loaded support (26) and hydraulic screw extractor (27)；Institute
The lower grip block (18) and axially loaded support (26) stated are each attached on base station (35)；The thin test specimen (19) and thick test specimen
(20) seam allowance correspondence is assembled together, and is assemblied in corresponding bolt hole by test specimen bolt (21) fixed；Thin test specimen (19) and thickness
Test specimen (20) is mounted as a whole between lower grip block (18) and upper grip block (25), the outer-hexagonal installation of the thin test specimen (19)
In the interior hexagonal of lower grip block (18), and fixed with hexagon socket head cap screw；Described thick test specimen (20) end is mounted on clamping
In plate (25) inner ring, and fixed with hexagon socket head cap screw；The bearing cap (23) passes through upper grip block (25), and by thrust ball axis
(24) are held to be clipped between bearing cap (23) and upper grip block (25)；Oil pressure starting handle one end of the hydraulic screw extractor (27) is placed in
In cylinder on axially loaded support (26), pawl hooks thereon catch on bearing cap (23) edge；
The transverse load transmitting portions include eccentric shaft coupling (1), camshaft (2), end cap (3), cam link (4), hinge
Outbound (5), U type connecting rod (6), first straight line bearing (7-1), second straight line bearing (7-2), the first support plate (8-1), second
Fagging (8-2), 8.5 pin of the first Ф (9-1), 8.5 pin of the 2nd Ф (9-2), 8.5 pin of the 3rd Ф (9-3), elastic rod
(10), brachycephaly screw element (11), adjusting ring (12), S type pillar tension sensor (13), long head thread part (14), swivel head
(15), tension board (16), limit plate (17) and threephase asynchronous machine (34)；First support plate (8-1), the second support plate
(8-2) and threephase asynchronous machine (34) is each attached on base station (35)；It is different that described eccentric shaft coupling (1) one end is fixed on three
On the motor shaft for walking motor (34), the other end is fixed together with camshaft (2)；The camshaft (2) passes through ball bearing
It links together with cam link (4), and with end cap (3) sealing and dustproof；Cam link (4) and U type connecting rod (6) hinge
Outbound (5) connection；The first straight line bearing (7-1) is fixed in the first support plate (8-1), and U type connecting rod (6) passes through first
Linear bearing (7-1)；Elastic rod (10) one end 8.5 pin of the first Ф (9-1) and U type connecting rod (6) hingedly, the other end
It is hinged by 8.5 pin of the 2nd Ф (9-2) with one end of brachycephaly screw element (11)；The other end of the brachycephaly screw element (11)
It connect, and is situated between installation and adjustment ring (12) with S type pillar tension sensor (13) threaded one end, S type pillar pulling force passes
The other end of sensor (13) is connect with the threaded one end of long head thread part (14)；The second straight line bearing (7-2) is fixed on
In second support plate (8-2), the other end of long head thread part (14) passes through second straight line bearing (7-2), uses with swivel head (15)
3rd Ф, 8.5 pin (9-3) is hinged；The swivel head (15) is placed in the U-type groove of tension board (16), is passed through limit plate (17)
Limit the movement of swivel head (15) in the U-type groove of tension board (16)；The tension board (16) is covered in thick test specimen (20) axis
On；
The torque load transmitting portions include toggle (22), retarder support frame (28), guide rail slide block (29), outside bearing
Cover (30), torque eccentric shaft coupling (31), retarder (32) and servo motor (33)；The retarder support frame (28) is fixed
On base station (35), servo motor (33) external retarder (32) is fixed on jointly on retarder support frame (28)；Described subtracts
The output shaft of fast device (32) links together with torque eccentric shaft coupling (31), torque eccentric shaft coupling (31) and bearing outside
(30) upper surface is fixed together, and bearing outside (30) lower end surface is fixed on the sliding block of guide rail slide block (29), guide rail slide block
(29) guide rail is fixed on toggle (22), and toggle (22) is equipped with an end cap of hexagon socket head outer the six of thick test specimen (20)
On angle, it is located on tension board (16).
2. ring flange stretch bending according to claim 1 turns round the more bolts of Combined Loading and loosens testing machine, which is characterized in that described
The thickness of adjusting ring (12) be adjusted according to demand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810229486.4A CN108444686B (en) | 2018-03-15 | 2018-03-15 | A kind of ring flange stretch bending turns round the more bolts of Combined Loading and loosens testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810229486.4A CN108444686B (en) | 2018-03-15 | 2018-03-15 | A kind of ring flange stretch bending turns round the more bolts of Combined Loading and loosens testing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108444686A CN108444686A (en) | 2018-08-24 |
| CN108444686B true CN108444686B (en) | 2019-10-11 |
Family
ID=63195232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810229486.4A Active CN108444686B (en) | 2018-03-15 | 2018-03-15 | A kind of ring flange stretch bending turns round the more bolts of Combined Loading and loosens testing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108444686B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10598567B1 (en) | 2018-03-15 | 2020-03-24 | Dalian University Of Technology | Multi-bolt loosening test machine for flange with tension, bending and torsion compound loading |
| US10620069B2 (en) | 2018-03-15 | 2020-04-14 | Dalian University Of Technology | Multi-bolt loosening test machine for flange with tension and bending compound loading |
| CN112284708B (en) * | 2020-10-23 | 2023-03-24 | 江苏徐工工程机械研究院有限公司 | Vibration-torsion composite bolt connection performance test auxiliary device and use method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104655379A (en) * | 2015-03-13 | 2015-05-27 | 武汉理工大学 | Device for testing anti-loosening property of threaded fastener |
| CN105784304A (en) * | 2016-05-05 | 2016-07-20 | 大连理工大学 | Multifunctional fastener testing machine |
| CN106769038A (en) * | 2016-12-12 | 2017-05-31 | 长春机械科学研究院有限公司 | One kind combination loading movable joint bearing tester |
| CN107271166A (en) * | 2017-06-30 | 2017-10-20 | 武汉理工大学 | It is threadedly coupled interface anti-loosening property experimental rig and its detection method |
| CN107505124A (en) * | 2017-08-02 | 2017-12-22 | 大连理工大学 | A kind of accurate control transverse load releases testing machine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5465404B2 (en) * | 2007-10-31 | 2014-04-09 | 一般財団法人小林理学研究所 | Inner nut looseness and damage detection method and apparatus |
| JP5910971B2 (en) * | 2013-05-24 | 2016-04-27 | イナバゴム株式会社 | Looseness detection device for tightening and fixing members |
| KR101823118B1 (en) * | 2016-03-09 | 2018-03-08 | (주)삼호정기 | Piston pin inspection device and piston pin assembly system including the smae |
-
2018
- 2018-03-15 CN CN201810229486.4A patent/CN108444686B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104655379A (en) * | 2015-03-13 | 2015-05-27 | 武汉理工大学 | Device for testing anti-loosening property of threaded fastener |
| CN105784304A (en) * | 2016-05-05 | 2016-07-20 | 大连理工大学 | Multifunctional fastener testing machine |
| CN106769038A (en) * | 2016-12-12 | 2017-05-31 | 长春机械科学研究院有限公司 | One kind combination loading movable joint bearing tester |
| CN107271166A (en) * | 2017-06-30 | 2017-10-20 | 武汉理工大学 | It is threadedly coupled interface anti-loosening property experimental rig and its detection method |
| CN107505124A (en) * | 2017-08-02 | 2017-12-22 | 大连理工大学 | A kind of accurate control transverse load releases testing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108444686A (en) | 2018-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10598567B1 (en) | Multi-bolt loosening test machine for flange with tension, bending and torsion compound loading | |
| CN108444686B (en) | A kind of ring flange stretch bending turns round the more bolts of Combined Loading and loosens testing machine | |
| CN108444687B (en) | A kind of more bolts of ring flange stretch bending Combined Loading loosen testing machine | |
| US10620069B2 (en) | Multi-bolt loosening test machine for flange with tension and bending compound loading | |
| CN108709793B (en) | Loading device and method for bending-torsion vibration fatigue test | |
| CN107505124B (en) | One kind accurately controlling transverse load and loosens testing machine | |
| WO2020014851A1 (en) | Transverse load stepless amplitude modulation device for multi-bolt looseness testing machine | |
| CN110907298A (en) | Biaxial loading fretting fatigue test system and method | |
| CN105033626A (en) | Multi-synchronous bolt fastening device for linkage of wind turbine generator system spindle and gearbox | |
| CN208422177U (en) | A kind of Computer Science and Technology instructional device | |
| CN110108407A (en) | New-energy automobile sleeve nut's axial force detection rack and its detection method | |
| CN207181038U (en) | Two-way tiltable Double gear box closed loop reverses bracket loading test platform | |
| CN107505132A (en) | Two-way tiltable Double gear box closed loop reverses bracket loading test platform | |
| US4552038A (en) | Remote controlled bolt removing apparatus for bolts securing the head of a reactor pressure vessel | |
| CN110332067A (en) | A kind of horizontal cylinder diesel engine tank support mounting structure | |
| CN108801623B (en) | Multi-bolt loosening testing machine transverse load stepless amplitude modulation device | |
| JPH0643791B2 (en) | A device for screwing a pipe into a socket | |
| CN216478399U (en) | Connecting device for connecting rod and fixed support pin shaft of steel ladle revolving platform | |
| CN115420494A (en) | Integrated brake oil pipe threaded joint and bolt fastening performance testing machine | |
| CN209485861U (en) | A kind of 4 points of curved experimental rigs | |
| CN110202522A (en) | It is a kind of for being detachably interference fitted the dismounting tooling and method of anti-side rolling torsion rod | |
| CN208721381U (en) | A kind of abnormity type component loading device | |
| CN109459305A (en) | A kind of concrete for hydraulic structure Fatigue Cracking Test device | |
| CN207946302U (en) | Goods train vehicle hand brake slide fastener pull test device | |
| DK177107B1 (en) | Vibration test machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |