CN108444686A - 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
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- CN108444686A CN108444686A CN201810229486.4A CN201810229486A CN108444686A CN 108444686 A CN108444686 A CN 108444686A CN 201810229486 A CN201810229486 A CN 201810229486A CN 108444686 A CN108444686 A CN 108444686A
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- 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
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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, can stretch bending 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 that a threephase asynchronous machine generates as the bending load applied to ring flange, use the pulling force that hydraulic screw extractor generates as axial drag load, use the torque that servo motor generates 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 technology
Bolt, which loosens testing machine, can be used for studying bolt in load bearing the case where loosening, and use now
Bolt stand under load loosen testing machine be divided into it is following several：
1, it is that Junker formulas loosen test method
Such as GB/T 10431-2008.It is mainly to be applied by pair fastener for adding pretightning force that Junker formulas, which loosen testing machine,
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 type test method(s)
Fastener pine is set to turn.
2, electric-liquid servo controlled type vibratory drilling method
Subject fastener is tightened on clamping rack when experiment, and generates defined pretightning force, passes through servo hydraulic cylinder
Make to generate alternation lateral displacement between two clamped metallic plates, causes clamping force to reduce, or even lose.Continuous record clamping force
It is instantaneous, the anti-loosening property of fastener is judged by comparison.
3, NAS vibration tests
Test specimen is tightened in experiment sleeve, and makes position mark on part and sleeve, then sleeve is placed in and is shaken
It is reciprocating on dynamic test platform.After booting, the both ends of sleeve reciprocating impact guide groove in guide groove generate larger 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 judged 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
Related patents are there is no in terms of testing machine.
Invention content
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 scheme 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 correspondings 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 hexagon socket head cap screw is used in combination
It is fixed；20 end of thick test specimen is mounted in 25 inner ring of upper grip block, and hexagon socket head cap screw is used in combination to fix；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, regulation ring 12, S
Type pillar pulling force sensor 13, long head thread part 14, swivel head 15, tension board 16, limiting 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 by ball bearing and cam link 4, and 3 sealing and dustproof of end cap is used in combination；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 of the brachycephaly screw element 11 and S type pillar pulling force
13 threaded one end of sensor connects, and the installation and adjustment ring 12 that is situated between, the other end and length of S type pillars pulling force 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, and movement of the swivel head 15 in the U-type groove of tension board 16 is limited by limiting plate 17；Institute
The tension board 16 stated is sleeved on 20 axis of thick test specimen；
The torque load transmitting portions include toggle 22, retarder supporting rack 28, guide rail slide block 29, bearing outside
30, torque eccentric shaft coupling 31, retarder 32 and servo motor 33；The retarder supporting rack 28 is fixed on base station 35,
33 external retarder 32 of servo motor is fixed on jointly on retarder supporting rack 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 faces 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, is set on toggle 22
There is one end of hexagon socket head to be sleeved 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
The applied magnitude of load of display.
Description of the drawings
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 rods；7-1 first straight lines
Bearing；7-2 second straight line bearings；The first support plates of 8-1；The second support plates of 8-2；8.5 pins of the first Ф of 9-1；The 2nd Ф of 9-2
8.5 pin；8.5 pins of the 3rd Ф of 9-3；10 elastic rods；11 brachycephaly screw elements；12 regulation rings；13S type pillar pulling force sensors；
14 long head thread parts；15 swivel heads；16 tension boards；17 limiting plates；8 times 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 supporting rack；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 implementation mode
Below in conjunction with attached drawing and technical solution, the specific implementation mode that further illustrates the present invention.
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 correspondings 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 hexagon socket head cap screw is used in combination
It is fixed；20 end of thick test specimen is mounted in 25 inner ring of upper grip block, and hexagon socket head cap screw is used in combination to fix；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, regulation ring 12, S
Type pillar pulling force sensor 13, long head thread part 14, swivel head 15, tension board 16, limiting 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 by ball bearing and cam link 4, and 3 sealing and dustproof of end cap is used in combination；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 of the brachycephaly screw element 11 and S type pillar pulling force
13 threaded one end of sensor connects, and the installation and adjustment ring 12 that is situated between, the other end and length of S type pillars pulling force 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, and movement of the swivel head 15 in the U-type groove of tension board 16 is limited by limiting plate 17；Institute
The tension board 16 stated is sleeved on 20 axis of thick test specimen；
The torque load transmitting portions include toggle 22, retarder supporting rack 28, guide rail slide block 29, bearing outside
30, torque eccentric shaft coupling 31, retarder 32 and servo motor 33；The retarder supporting rack 28 is fixed on base station 35,
33 external retarder 32 of servo motor is fixed on jointly on retarder supporting rack 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 faces 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, is set on toggle 22
There is one end of hexagon socket head to be sleeved 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
Go out periodical transverse load, it, will not there is a situation where motor lockings due to the presence of elastic rod 10.
(3) torsion arm swing can be made due to the presence of 31 eccentricity of torque eccentric shaft coupling by starting servo motor 33, from
And apply the torque load of cycle 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), hexagon socket head cap screw is used in combination to fix；Described thick test specimen (20) end is mounted on upper clamping
In plate (25) inner ring, hexagon socket head cap screw is used in combination to fix；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 pins of the first Ф (9-1), 8.5 pins of the 2nd Ф (9-2), 8.5 pins of the 3rd Ф (9-3), elastic rod
(10), brachycephaly screw element (11), regulation ring (12), S type pillar pulling force sensors (13), long head thread part (14), swivel head
(15), tension board (16), limiting plate (17) and threephase asynchronous machine (34)；First support plate (8-1), the second support plate
(8-2) is each attached to threephase asynchronous machine (34) 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), end cap (3) sealing and dustproof is used in combination；The cam link (4) and U type connecting rod (6) hinge
Outbound (5) connects；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 pins of the first Ф (9-1) are hinged with U type connecting rod (6), the other end
It is hinged by 8.5 pins of the 2nd Ф (9-2) with one end of brachycephaly screw element (11)；The other end of the brachycephaly screw element (11)
It is connect with S type pillar pulling force sensor (13) threaded one end, and the installation and adjustment ring (12) that is situated between, 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), is used with swivel head (15)
3rd Ф, 8.5 pins (9-3) are hinged；The swivel head (15) is placed in the U-type groove of tension board (16), is passed through limiting plate (17)
Limit movement of the swivel head (15) in the U-type groove of tension board (16)；The tension board (16) is sleeved on thick test specimen (20) axis
On；
The torque load transmitting portions include toggle (22), retarder supporting rack (28), guide rail slide block (29), outside bearing
Cover (30), torque eccentric shaft coupling (31), retarder (32) and servo motor (33)；The retarder supporting rack (28) is fixed
On base station (35), servo motor (33) external retarder (32) is fixed on jointly on retarder supporting rack (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 face 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 one end that toggle (22) is equipped with hexagon socket head is sleeved on 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 regulation 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 true CN108444686A (en) | 2018-08-24 |
| CN108444686B CN108444686B (en) | 2019-10-11 |
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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) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019173994A1 (en) * | 2018-03-15 | 2019-09-19 | 大连理工大学 | Flange tensile-bending composite loading multi-bolt loosening testing machine |
| WO2019173995A1 (en) * | 2018-03-15 | 2019-09-19 | 大连理工大学 | Tester for release of multiple bolts caused by applying tensile, bending, and torsional combined loads to flange |
| CN112284708A (en) * | 2020-10-23 | 2021-01-29 | 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 |
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| 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 |
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| JP2009133822A (en) * | 2007-10-31 | 2009-06-18 | Kobayashi Rigaku Kenkyusho | Method and apparatus for detecting looseness and damage of inner nut |
| JP2014228465A (en) * | 2013-05-24 | 2014-12-08 | イナバゴム株式会社 | Looseness detection device of tight fixing member |
| CN104655379A (en) * | 2015-03-13 | 2015-05-27 | 武汉理工大学 | Device for testing anti-loosening property of threaded fastener |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019173994A1 (en) * | 2018-03-15 | 2019-09-19 | 大连理工大学 | Flange tensile-bending composite loading multi-bolt loosening testing machine |
| WO2019173995A1 (en) * | 2018-03-15 | 2019-09-19 | 大连理工大学 | Tester for release of multiple bolts caused by applying tensile, bending, and torsional combined loads to flange |
| 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 |
| CN112284708A (en) * | 2020-10-23 | 2021-01-29 | 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 |
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|---|---|
| CN108444686B (en) | 2019-10-11 |
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