CN110441037A - A kind of stubborn de- test fixture of new type nut - Google Patents

A kind of stubborn de- test fixture of new type nut Download PDF

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Publication number
CN110441037A
CN110441037A CN201811596081.0A CN201811596081A CN110441037A CN 110441037 A CN110441037 A CN 110441037A CN 201811596081 A CN201811596081 A CN 201811596081A CN 110441037 A CN110441037 A CN 110441037A
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CN
China
Prior art keywords
positioning mechanism
type pedestal
mounting plate
rigid mounting
type
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Granted
Application number
CN201811596081.0A
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Chinese (zh)
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CN110441037B (en
Inventor
何磊
郝晓波
张晓明
樊淼海
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Xi'an Established Aviation Manufacturing Co Ltd
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Xi'an Established Aviation Manufacturing Co Ltd
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Priority to CN201811596081.0A priority Critical patent/CN110441037B/en
Publication of CN110441037A publication Critical patent/CN110441037A/en
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Publication of CN110441037B publication Critical patent/CN110441037B/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00Testing of machine parts

Abstract

The present invention relates to field of aerospace technology, and disclose a kind of stubborn de- test fixture of new type nut, including rigid mounting plate, lower positioning mechanism, upper positioning mechanism, four fixing bolts, two clamp systems and two grooves, the rigid mounting plate is between lower positioning mechanism and upper positioning mechanism, four fixing bolts are located at the top and lower section of rigid mounting plate, two clamp systems are located in the inner cavity of lower positioning mechanism and the inner cavity of upper positioning mechanism, and two grooves are separately positioned on the right side of lower positioning mechanism Yu upper positioning mechanism inboard.The present invention is by being split as lower positioning mechanism and upper positioning mechanism two parts for U-type groove tooling, it is extended at the top of lower positioning mechanism in the cavity that the inner cavity of positioning mechanism offers, the vertical distance between lower positioning mechanism and upper positioning mechanism is adjusted with this, for with can be adapted to for various sizes of rigid mounting plate, do not influence the accuracy that nut twists de- experiment.

Description

A kind of stubborn de- test fixture of new type nut
Technical field
The present invention relates to field of aerospace technology, specially a kind of new type nut twists de- test fixture.
Background technique
It is to be mounted on rigid mounting plate by that will test nut by rivet that nut, which twists de- experiment, passes through shouldered spiral shell Bolt to nut test as defined in torque, whether detection separates with bracket in the torque lower nut, and nut assembly should not produce The raw crackle for influencing to use and deformation realize the clamping problem of mounting plate for existing U-type groove tooling is installed.
It is rigid mounting plate according to twisting de- experimental standard GJB715.5-90 to require the de- test fixture main body of twisting of nut, and Nut twists de- experiment and needs to complete on torsion tester, and U-type groove tooling is for installation in the stubborn de- test fixture of existing nut Without scalability, the tight and slow low efficiency of clamping is required to the size of mounting plate.
Summary of the invention
The object of the present invention is to provide a kind of new type nuts to twist de- test fixture, and reaching U-type groove tooling can be free The distance between groove is adjusted, for the purpose applicable with various sizes of rigid mounting plate.
To achieve the above object, the invention provides the following technical scheme: a kind of new type nut twists de- test fixture, including it is rigid Property mounting plate, lower positioning mechanism, upper positioning mechanism, four fixing bolts, two clamp systems and two grooves, it is described rigidity peace For loading board between lower positioning mechanism and upper positioning mechanism, four fixing bolts are located at the top of rigid mounting plate under Side, two clamp systems are located in the inner cavity of lower positioning mechanism and the inner cavity of upper positioning mechanism, and two grooves are respectively set On the right side of lower positioning mechanism and upper positioning mechanism inboard, the rigid mounting plate includes first through hole and two the second through-holes, The first through hole is arranged in the center of rigid mounting plate, two the second through-holes be arranged at rigid mounting plate it is vertical in Between position, and two the second through-holes are located at front side and the rear side of first through hole, and the lower positioning mechanism includes the first L-type bottom Seat, electric telescopic rod, connection heelpiece, protruding block and two idler wheels, the electric telescopic rod are located at the left side of the first L-type pedestal, And the right end of electric telescopic rod is connect with the middle position of the left side of the first L-type pedestal, the connection heelpiece is located at the first L-type The top of pedestal, and be connected at the top of the bottom of connection heelpiece and the first L-type pedestal, the protruding block is located at connection heelpiece Top center position, and the bottom of protruding block is connected with connecting at the top of heelpiece, and two idler wheels are located at the first L Top at left and right sides of type pedestal, and the inboard of idler wheel is connected with the outer wall left and right sides for connecting heelpiece.
The upper positioning mechanism includes that the second L-type pedestal, cavity, depressed area, threaded rod and two slideways, the cavity are set The bottom left in the second L-type pedestal is set, the middle position at the top of the inner wall of cavity, the threaded rod is arranged in the depressed area It is connected positioned at the top center position of the second L-type chassis left side, and on the left of the right side of threaded rod and the second L-type pedestal, Two slideways are located in cavity, and the left and right sides connection of the outer wall and cavity inner wall of two slideways, the clamp system Including lifting block, connecting rod and arc clamping block, the connecting rod is located at the bottom middle position of lifting block, and the top of connecting rod It is connect with the bottom of lifting block, the arc clamping block is located at the bottom of connecting rod, and the top center position of arc clamping block and company The bottom of extension bar connects.
Preferably, the bottom of the second L-type pedestal is run through at the top of the first L-type pedestal, and extends to the second L-type pedestal In the cavity being provided with.
Preferably, two idler wheels are connect with the inner wall of two slideways respectively far from one end of connection heelpiece, the first L-type Pedestal is connect by two idler wheels with the second L-type pedestal.
Preferably, the inner wall of the depressed area is connected with rubber pad, and the size of depressed area and the size of depressed area are mutually fitted Match.
Preferably, the connecting rod extends through the first L-type pedestal and the second L-type pedestal far from one end of lifting block, and Extend to the top of the first L-type pedestal and the bottom of the second L-type pedestal.
Preferably, the top and bottom of the rigid mounting plate respectively with the groove that is provided at the top of the first L-type pedestal The side for the groove being provided with the bottom of the second L-type pedestal is connected.
Preferably, the lateral length of the threaded rod and the furthest travel of electric telescopic rod are equal, and threaded rod is located at two The longitudinally middle position of a fixing bolt.
Preferably, the rigid mounting plate is circular mounting plate, and the radian of the radian of arc clamping block and rigid mounting plate It is adapted.
The present invention provides a kind of new type nuts to twist de- test fixture.Have it is following the utility model has the advantages that
(1), the present invention is by being split as lower positioning mechanism and upper positioning mechanism two parts, lower localization machine for U-type groove tooling It is extended at the top of structure in the cavity that the inner cavity of positioning mechanism offers, lower positioning mechanism and upper positioning mechanism is adjusted with this Between vertical distance, for can be adapted to for various sizes of rigid mounting plate, do not influence the standard that nut twists de- experiment True property.
(2), the present invention is by being provided through clamping machine at the top of the bottom of lower positioning mechanism and upper positioning mechanism Rigid mounting plate is fixed between lower positioning mechanism and upper positioning mechanism by structure by arc clamping block, so that clamp system is under Positioning mechanism, upper positioning mechanism cooperate, and on the one hand enhance the adaptability of U-type groove tooling, twist nut de- In experiment, the positioning of rigid mounting plate is more accurate.
(3), idler wheel is fixedly mounted by the top of the left and right sides of the first L-type pedestal in the present invention, and idler wheel is located in cavity In the slideway that wall is equipped with, so that the first L-type pedestal and the sliding before the second L-type pedestal are more smooth, while in cavity Depressed area is set, and the top of the first L-type pedestal installs protruding block, constitutes a simple limiting device, be further ensured that U-type groove During tooling clamps rigid mounting plate, additional injuries will not be caused to rigid mounting plate.
(4), the present invention is by the way that fixing bolt to be inserted by the right side of the first L-type pedestal and the second L-type pedestal, and extends It is fixedly connected to outer end with torsion tester, further, by the fixed function of threaded rod and electric telescopic rod, so that U-shaped The connection of slot tooling and torsion tester more fastens.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention;
Fig. 2 is right view of the present invention;
Fig. 3 is the enlarged drawing in Fig. 1 at A;
Fig. 4 is the enlarged drawing in Fig. 1 at B;
Fig. 5 is the structural schematic diagram of embodiment one;
Fig. 6 is the structural schematic diagram of embodiment two.
In figure: 1 rigid mounting plate, 2 first through hole, 3 second through-holes, 4 lower positioning mechanisms, 401 first L-type pedestals, 402 Electric telescopic rod, 403 connection heelpieces, 404 protruding blocks, 405 idler wheels, positioning mechanism on 5,501 second L-type pedestals, 502 cavitys, 503 depressed areas, 504 threaded rods, 505 slideways, 6 fixing bolts, 7 clamp systems, 701 lifting blocks, 702 connecting rods, 703 circular arcs Fixture block, 8 grooves.
Specific embodiment
As shown in figures 1 to 6, the present invention provides a kind of technical solution: a kind of stubborn de- test fixture of new type nut, including rigidity Mounting plate 1, lower positioning mechanism 4, the clamp system 7 of fixing bolt 6, two of upper positioning mechanism 5, four and two grooves 8, rigidity are pacified For loading board 1 between lower positioning mechanism 4 and upper positioning mechanism 5, four fixing bolts 6 are located at the top of rigid mounting plate 1 With lower section, two clamp systems 7 are located in the inner cavity of lower positioning mechanism 4 and the inner cavity of upper positioning mechanism 5, two grooves 8 It is provided with lower positioning mechanism 4 and the inboard right side of upper positioning mechanism 5 respectively, rigid mounting plate 1 includes first through hole 2 and two the Two through-holes 3, first through hole 2 are provided with the center of rigid mounting plate 1, and two the second through-holes 3 are provided with rigid mounting plate 1 Vertical middle position, and two the second through-holes 3 are located at front side and the rear side of first through hole 2, and lower positioning mechanism 4 includes the One L-type pedestal 401, electric telescopic rod 402, connection heelpiece 403, protruding block 404 and two idler wheels 405, electric telescopic rod 402 Positioned at the left side of the first L-type pedestal 401, and the centre of the left side of the right end of electric telescopic rod 402 and the first L-type pedestal 401 Position is fixedly connected, and connection heelpiece 403 is located at the top of the first L-type pedestal 401, and connects bottom and the first L-type of heelpiece 403 The top of pedestal 401 is mutually bonded, and protruding block 404 is located at the top center position of connection heelpiece 403, and the bottom of protruding block 404 Mutually be bonded with the top of connection heelpiece 403, two idler wheels 405 are located at the top of 401 left and right sides of the first L-type pedestal, and The inboard of idler wheel 405 is fixedly connected with the outer wall left and right sides for connecting heelpiece 403.
Upper positioning mechanism 5 includes the second L-type pedestal 501, cavity 502, depressed area 503, threaded rod 504 and two slideways 505, cavity 502 is provided with the bottom left of the second L-type pedestal 501, and depressed area 503 is provided at the top of the inner wall of cavity 502 Middle position, threaded rod 504 are located at the top center position in the left side of the second L-type pedestal 501, and the right side of threaded rod 504 with The left side of 2nd L type pedestal 501 is mutually welded, and two slideways 505 are located in cavity 502, and the outer wall of two slideways 505 and sky It is fixedly connected at left and right sides of 502 inner wall of chamber, clamp system 7 includes lifting block 701, connecting rod 702 and arc clamping block 703, is connected Extension bar 702 is located at the bottom middle position of lifting block 701, and the fixed company in the top of connecting rod 702 and the bottom of lifting block 701 It connects, arc clamping block 703 is located at the bottom of connecting rod 702, and the bottom of the top center position of arc clamping block 703 and connecting rod 702 Portion is fixedly connected, and the bottom of the second L-type pedestal 501 is run through at the top of the first L-type pedestal 401, and extends to the second L-type pedestal In 501 cavitys 502 offered, the one end of two idler wheels 405 far from connection heelpiece 403 inner wall with two slideways 505 respectively It is flexibly connected, the first L type pedestal 401 is flexibly connected by two idler wheels 405 with the second L-type pedestal 501, depressed area 503 Inner wall is bonded with rubber pad, and the size of depressed area 404 is adapted with the size of depressed area 503, and connecting rod 702 is far from lifting block 701 one end extends through the first L-type pedestal 401 and the 2nd L type pedestal 501, and extends to the top of the first L-type pedestal 401 With the bottom of the second L-type pedestal 501, top of the top and bottom of rigid mounting plate 1 respectively with the first L-type pedestal 401 is opened up Some grooves 8 are connected with the side for the groove 8 that the bottom of the second L-type pedestal 501 offers, the lateral length of threaded rod 504 It is equal with the furthest travel of electric telescopic rod 402, and threaded rod 504 is located at the longitudinally middle position of two fixing bolts 6, just Property mounting plate 1 be circular mounting plate, and the radian of arc clamping block 703 is adapted with the radian of rigid mounting plate 1.
Embodiment one:
As shown in figure 5, rigid mounting plate 1 is rectangular mounting plate, rigid mounting plate 1 includes first through hole 2 and two second The middle position of rigid mounting plate 1 is arranged in through-hole 3, first through hole 2, and two the second through-holes 3 are arranged at rigid mounting plate 1 Vertical middle position, and two the second through-holes 3 are located at front side and the rear side of first through hole 2.
Embodiment two:
As shown in fig. 6, rigid mounting plate 1 is circular mounting plate, rigid mounting plate 1 includes first through hole 2 and four second The middle position of rigid mounting plate 1 is arranged in through-hole 3, first through hole 2, and four the second through-holes 3 are arranged at rigid mounting plate 1 On, and four the second through-holes 3 are symmetrically distributed in 2 surrounding of first through hole.
When in use, rigid mounting plate 1 is put into the groove 8 offered between lower positioning mechanism 4 and upper positioning mechanism 5 In, it is being rolled by mobile first L-type pedestal 401 so that the first L-type pedestal 401 runs through the part into the second L-type pedestal 501 Under the action of wheel 405, smooth sliding, to adapt to the size of rigid mounting plate 1, then manpower presses lifting block 701 inwards, mentions Pulling block 701 drives 703 phase of arc clamping block mobile close to the position of rigid mounting plate 1 by connecting rod 702, and by rigid installation Plate 1 tightly clips, after completing being fixedly connected of rigid mounting plate 1 and lower positioning mechanism 4 and upper positioning mechanism 5, by lower localization machine The threaded rod 504 being fixedly connected on the left of structure 4 is screwed on torsion tester, starts electric telescopic rod 402, electric telescopic rod 402 On into torsion tester in the fixed through-hole offered, finally by by fixing bolt 6 by lower positioning mechanism 4 and upper localization machine The right end of structure 5 is screwed into, and that completes torsion tester and lower positioning mechanism 4 and upper positioning mechanism 5 is fixedly connected with installation.
Can to sum up obtain, the present invention by the way that U-type groove tooling is split as 5 two parts of lower positioning mechanism 4 and upper positioning mechanism, under In the cavity 502 that the inner cavity that the top of positioning mechanism 4 extends to positioning mechanism 5 offers, lower positioning mechanism 4 is adjusted with this Vertical distance between upper positioning mechanism 5, for can be adapted to for various sizes of rigid mounting plate 1, do not influence spiral shell Mother twists the accuracy of de- experiment, and the present invention is by running through setting in the bottom of lower positioning mechanism 4 and the top of upper positioning mechanism 5 There is clamp system 7, rigid mounting plate 1 is fixed between lower positioning mechanism 4 and upper positioning mechanism 5 by arc clamping block 703, is made It obtains clamp system 7 and lower positioning mechanism 4, upper positioning mechanism 5 cooperates, on the one hand enhance the adaptability of U-type groove tooling, it is another Aspect twists nut in de- experiment, and the positioning of rigid mounting plate 1 is more accurate, and the present invention passes through a left side for the first L-type pedestal 401 Idler wheel 405 is fixedly mounted in the top of right two sides, and idler wheel 405 is located in the slideway 505 that 502 inner wall of cavity is equipped with, so that first L-type pedestal 401 and the sliding before the second L-type pedestal 501 are more smooth, while depressed area 503 being arranged in cavity 502, the Protruding block 404 is installed at the top of one L-type pedestal 401, is constituted a simple limiting device, is further ensured that U type groove tooling pair During rigid mounting plate 1 clamps, additional injuries will not be caused to rigid mounting plate 1, the present invention by by fixing bolt 6 by The insertion of the right side of first L-type pedestal 401 and the second L-type pedestal 501, and extend to outer end and be fixedly connected with torsion tester, Further, by the fixed function of threaded rod 504 and electric telescopic rod 402, so that the company of U-type groove tooling and torsion tester It connects and more fastens.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.In the absence of more restrictions, the element limited by sentence " including a reference structure ", is not arranged Except there is also other identical elements in the process, method, article or apparatus that includes the element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.

Claims (8)

1. a kind of new type nut twists de- test fixture, including rigid mounting plate (1), lower positioning mechanism (4), upper positioning mechanism (5), Four fixing bolts (6), two clamp systems (7) and two grooves (8), it is characterised in that: the rigid mounting plate (1) is located at Between lower positioning mechanism (4) and upper positioning mechanism (5), four fixing bolts (6) be located at the top of rigid mounting plate (1) with Lower section, two clamp systems (7) are located in the inner cavity of lower positioning mechanism (4) and the inner cavity of upper positioning mechanism (5), and two recessed Slot (8) is separately positioned on the right side of lower positioning mechanism (4) Yu upper positioning mechanism (5) inboard, and the rigid mounting plate (1) includes the One through-hole (2) and two the second through-holes (3), first through hole (2) setting is in the center of rigid mounting plate (1), and two Second through-hole (3) is arranged at the vertical middle position of rigid mounting plate (1), and two the second through-holes (3) are located at first The front side of through-hole (2) and rear side, the lower positioning mechanism (4) include the first L-type pedestal (401), electric telescopic rod (402), connect Heelpiece (403), protruding block (404) and two idler wheels (405) are connect, the electric telescopic rod (402) is located at the first L-type pedestal (401) left side, and the right end of electric telescopic rod (402) is connect with the middle position of the left side of the first L-type pedestal (401), Connection heelpiece (403) is located at the top of the first L-type pedestal (401), and connects the bottom and the first L-type bottom of heelpiece (403) It is connected at the top of seat (401), the protruding block (404) is located at the top center position of connection heelpiece (403), and protruding block (404) bottom is connected with connecting at the top of heelpiece (403), and two idler wheels (405) are located at the first L-type pedestal (401) top at left and right sides of, and the inboard of idler wheel (405) is connected with the outer wall left and right sides for connecting heelpiece (403);
The upper positioning mechanism (5) include the second L-type pedestal (501), cavity (502), depressed area (503), threaded rod (504) with The bottom left in the second L-type pedestal (501) is arranged in two slideways (505), the cavity (502), and the depressed area (503) sets The middle position at the top of the inner wall of cavity (502) is set, the threaded rod (504) is located at the top on the left of the second L-type pedestal (501) Portion middle position, and be connected on the left of the right side of threaded rod (504) and the second L-type pedestal (501), two slideways (505) it is located in cavity (502), and the outer wall of two slideways (505) is connect with the left and right sides of cavity (502) inner wall, it is described Clamp system (7) includes that lifting block (701), connecting rod (702) and arc clamping block (703), the connecting rod (702) are located at lifting The bottom middle position of block (701), and the top of connecting rod (702) is connect with the bottom of lifting block (701), the arc clamping block (703) it is located at the bottom of connecting rod (702), and the bottom of the top center position of arc clamping block (703) and connecting rod (702) connects It connects.
2. a kind of new type nut according to claim 1 twists de- test fixture, it is characterised in that: the first L-type pedestal (401) bottom of the second L-type pedestal (501) is run through at top, and extends to the cavity that the second L-type pedestal (501) is provided with (502) in.
3. a kind of new type nut according to claim 1 twists de- test fixture, it is characterised in that: two idler wheels (405) one end far from connection heelpiece (403) is connect with the inner wall of two slideways (505) respectively, and the first L-type pedestal (401) is logical Two idler wheels (405) are crossed to connect with the second L-type pedestal (501).
4. a kind of new type nut according to claim 1 twists de- test fixture, it is characterised in that: the depressed area (503) Inner wall be connected with rubber pad, and the size of depressed area (404) is adapted with the size of depressed area (503).
5. a kind of new type nut according to claim 1 twists de- test fixture, it is characterised in that: the connecting rod (702) One end far from lifting block (701) extends through the first L-type pedestal (401) and the second L-type pedestal (501), and extends to the first L The bottom at the top of type pedestal (401) and the second L-type pedestal (501).
6. a kind of new type nut according to claim 1 twists de- test fixture, it is characterised in that: the rigid mounting plate (1) top and bottom respectively with the groove (8) and the second L-type pedestal (501) that are provided at the top of the first L-type pedestal (401) The side of groove (8) that is provided with of bottom be connected.
7. a kind of new type nut according to claim 1 twists de- test fixture, it is characterised in that: the threaded rod (504) Lateral length it is equal with the furthest travel of electric telescopic rod (402), and threaded rod (504) is located at two fixing bolts (6) Longitudinally middle position.
8. a kind of new type nut according to claim 1 twists de- test fixture, it is characterised in that: the rigid mounting plate It (1) is circular mounting plate, and the radian of arc clamping block (703) is adapted with the radian of rigid mounting plate (1).
CN201811596081.0A 2018-12-25 2018-12-25 Nut screwing-off experiment tool Active CN110441037B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811596081.0A CN110441037B (en) 2018-12-25 2018-12-25 Nut screwing-off experiment tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811596081.0A CN110441037B (en) 2018-12-25 2018-12-25 Nut screwing-off experiment tool

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CN110441037A true CN110441037A (en) 2019-11-12
CN110441037B CN110441037B (en) 2024-05-03

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016053479A (en) * 2014-09-02 2016-04-14 株式会社共和電業 Screw looseness monitoring system, screw removal monitoring system, and screw looseness or removal monitoring system
CN106940252A (en) * 2017-04-27 2017-07-11 西南交通大学 The loosening test device and its application method of a kind of bolt connection structure
CN107036797A (en) * 2017-05-27 2017-08-11 西南交通大学 The experimental rig of bolt looseness under a kind of measurement action of lateral load
CN107588942A (en) * 2017-10-23 2018-01-16 重庆奔隆机械有限公司 Nut detection means
CN207358926U (en) * 2017-11-02 2018-05-15 浙江荣得利航空部件有限公司 A kind of multi-functional bolt detection fixture
CN108343704A (en) * 2017-12-27 2018-07-31 周豪杰 A kind of nut processing clamping device
CN209570329U (en) * 2018-12-25 2019-11-01 西安成立航空制造有限公司 A kind of stubborn de- test fixture of new type nut

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016053479A (en) * 2014-09-02 2016-04-14 株式会社共和電業 Screw looseness monitoring system, screw removal monitoring system, and screw looseness or removal monitoring system
CN106940252A (en) * 2017-04-27 2017-07-11 西南交通大学 The loosening test device and its application method of a kind of bolt connection structure
CN107036797A (en) * 2017-05-27 2017-08-11 西南交通大学 The experimental rig of bolt looseness under a kind of measurement action of lateral load
CN107588942A (en) * 2017-10-23 2018-01-16 重庆奔隆机械有限公司 Nut detection means
CN207358926U (en) * 2017-11-02 2018-05-15 浙江荣得利航空部件有限公司 A kind of multi-functional bolt detection fixture
CN108343704A (en) * 2017-12-27 2018-07-31 周豪杰 A kind of nut processing clamping device
CN209570329U (en) * 2018-12-25 2019-11-01 西安成立航空制造有限公司 A kind of stubborn de- test fixture of new type nut

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