CN110441037B - Nut screwing-off experiment tool - Google Patents
Nut screwing-off experiment tool Download PDFInfo
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- CN110441037B CN110441037B CN201811596081.0A CN201811596081A CN110441037B CN 110441037 B CN110441037 B CN 110441037B CN 201811596081 A CN201811596081 A CN 201811596081A CN 110441037 B CN110441037 B CN 110441037B
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- 230000007246 mechanism Effects 0.000 claims abstract description 95
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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 invention relates to the technical field of aerospace and discloses a novel nut screwing-off experiment tool which comprises a rigid mounting plate, a lower positioning mechanism, an upper positioning mechanism, four fixing bolts, two clamping mechanisms and two grooves, wherein the rigid mounting plate is positioned between the lower positioning mechanism and the upper positioning mechanism, the four fixing bolts are respectively positioned above and below the rigid mounting plate, the two clamping mechanisms are respectively positioned in an inner cavity of the lower positioning mechanism and an inner cavity of the upper positioning mechanism, and the two grooves are respectively arranged on the right sides of the inner sides of the lower positioning mechanism and the upper positioning mechanism. According to the invention, the U-shaped groove tool is split into the lower positioning mechanism and the upper positioning mechanism, the top of the lower positioning mechanism extends into the cavity formed in the inner cavity of the upper positioning mechanism, so that the vertical distance between the lower positioning mechanism and the upper positioning mechanism is adjusted, and the U-shaped groove tool can be matched with rigid mounting plates with different sizes, and the accuracy of a nut screwing-out experiment is not affected.
Description
Technical Field
The invention relates to the technical field of aerospace, in particular to a nut screwing-off experimental tool.
Background
The nut screwing-off experiment is to install an experiment nut on a rigid mounting plate through a rivet, detect whether the nut is separated from a bracket under the torque through a bolt with a shoulder for the nut experiment specified torque, and the nut component should not generate cracks and deformation affecting the use, so that the problem of mounting the mounting plate is solved by installing the existing U-shaped groove tool.
According to the screwing-off experimental standard GJB715.5-90, the main body of the screwing-off experimental tool for the nut is a rigid mounting plate, the screwing-off experiment of the nut is required to be completed on a torsion experimental machine, the U-shaped groove tool in the existing screwing-off experimental tool for the nut has no adjustability for mounting, the requirement on the size of the mounting plate is strict, and the clamping is slow and efficient.
Disclosure of Invention
The invention aims to provide a nut screwing-off experiment tool, which can freely adjust the distance between grooves and is suitable for rigid mounting plates with different sizes.
In order to achieve the above purpose, the present invention provides the following technical solutions: the nut screwing-off experiment tool comprises a rigid mounting plate, a lower positioning mechanism, an upper positioning mechanism, four fixing bolts, two clamping mechanisms and two grooves, wherein the rigid mounting plate is positioned between the lower positioning mechanism and the upper positioning mechanism, the four fixing bolts are respectively positioned above and below the rigid mounting plate, the two clamping mechanisms are respectively positioned in an inner cavity of the lower positioning mechanism and an inner cavity of the upper positioning mechanism, the two grooves are respectively arranged on the right sides of the inner sides of the lower positioning mechanism and the upper positioning mechanism, the rigid mounting plate comprises a first through hole and two second through holes, the first through hole is arranged at the central position of the rigid mounting plate, the two second through holes are respectively arranged at the vertical middle position of the rigid mounting plate, and two second through holes are located the front side and the rear side of first through hole respectively, lower positioning mechanism includes first L type base, electric telescopic handle, connects base pad, protruding piece and two gyro wheels, electric telescopic handle is located the left side of first L type base, and electric telescopic handle's right-hand member is connected with the intermediate position of the left surface of first L type base, connect the base pad and be located the top of first L type base, and connect the bottom of base pad and be connected with the top of first L type base, protruding piece is located the top intermediate position of connecting the base pad, and the bottom of protruding piece is connected with the top of connecting the base pad, two the gyro wheels are located the top of first L type base left and right sides respectively, and the inboard of gyro wheel is connected with the outer wall left and right sides of connecting the base pad.
The upper positioning mechanism comprises a second L-shaped base, a cavity, a concave area, a threaded rod and two slide ways, wherein the cavity is arranged at the left side of the bottom of the second L-shaped base, the concave area is arranged at the middle position of the top of the inner wall of the cavity, the threaded rod is positioned at the middle position of the top of the left side of the second L-shaped base, the right side surface of the threaded rod is connected with the left side of the second L-shaped base, the two slide ways are positioned in the cavity, the outer walls of the two slide ways are connected with the left side and the right side of the inner wall of the cavity, the clamping mechanism comprises a lifting block, a connecting rod and an arc clamping block, the connecting rod is positioned at the middle position of the bottom of the lifting block, the top of the connecting rod is connected with the bottom of the lifting block, and the arc clamping block is positioned at the bottom of the connecting rod, and the middle position of the top of the arc clamping block is connected with the bottom of the connecting rod;
the top of the first L-shaped base penetrates through the bottom of the second L-shaped base and extends into a cavity formed in the second L-shaped base;
The two rollers are far away from one end of the connecting base cushion and are respectively connected with the inner walls of the two slide ways, and the first L-shaped base is connected with the second L-shaped base through the two rollers.
Preferably, the inner wall of the concave area is connected with a rubber pad, and the size of the convex block is matched with the size of the concave area.
Preferably, one end of the connecting rod far away from the lifting block penetrates through the first L-shaped base and the second L-shaped base respectively and extends to the top of the first L-shaped base and the bottom of the second L-shaped base.
Preferably, the top and the bottom of the rigid mounting plate are respectively connected with one side of a groove formed in the top of the first L-shaped base and one side of a groove formed in the bottom of the second L-shaped base.
Preferably, the transverse length of the threaded rod is equal to the furthest stroke of the electric telescopic rod, and the threaded rod is positioned at the longitudinal middle position of the two fixing bolts.
Preferably, the rigid mounting plate is a circular mounting plate, and the radian of the circular clamping block is matched with the radian of the rigid mounting plate.
The invention provides a nut screwing-off experiment tool. The beneficial effects are as follows:
(1) According to the invention, the U-shaped groove tool is split into the lower positioning mechanism and the upper positioning mechanism, the top of the lower positioning mechanism extends into the cavity formed in the inner cavity of the upper positioning mechanism, so that the vertical distance between the lower positioning mechanism and the upper positioning mechanism is adjusted, and the U-shaped groove tool can be matched with rigid mounting plates with different sizes, and the accuracy of a nut screwing-off experiment is not affected.
(2) According to the invention, the clamping mechanisms are arranged at the bottom of the lower positioning mechanism and the top of the upper positioning mechanism in a penetrating manner, and the rigid mounting plate is fixed between the lower positioning mechanism and the upper positioning mechanism through the circular arc clamping blocks, so that the clamping mechanisms work cooperatively with the lower positioning mechanism and the upper positioning mechanism, the adaptability of the U-shaped groove tool is enhanced on one hand, and the positioning of the rigid mounting plate is more accurate in a nut screwing-off experiment on the other hand.
(3) According to the invention, the rollers are fixedly arranged at the tops of the left side and the right side of the first L-shaped base, and are positioned in the slide ways arranged on the inner walls of the cavities, so that the sliding of the first L-shaped base and the second L-shaped base is smoother, meanwhile, the concave areas are arranged in the cavities, and the protruding blocks are arranged at the tops of the first L-shaped base, so that a simple limiting device is formed, and the rigid mounting plate is further prevented from being additionally damaged in the process of clamping by the U-shaped groove tool.
(4) According to the invention, the fixing bolts are inserted from the right side surfaces of the first L-shaped base and the second L-shaped base and extend to the outer end to be fixedly connected with the torsion experiment machine, and further, the connection between the U-shaped groove tool and the torsion experiment machine is more fastened through the fixing effect of the threaded rod and the electric telescopic rod.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a right side view of the present invention;
FIG. 3 is an enlarged view of FIG. 1 at A;
FIG. 4 is an enlarged view at B in FIG. 1;
FIG. 5 is a schematic diagram of the structure of the first embodiment;
Fig. 6 is a schematic structural diagram of the second embodiment.
In the figure: the device comprises a rigid mounting plate 1, a first through hole 2, a second through hole 3, a lower positioning mechanism 4, a first L-shaped base 401, an electric telescopic rod 402, a connecting base pad 403, a protruding block 404, a roller 405, an upper positioning mechanism 5, a second L-shaped base 501, a cavity 502, a concave region 503, a threaded rod 504, a slideway 505, a fixing bolt 6, a clamping mechanism 7, a lifting block 701, a connecting rod 702, a circular arc clamping block 703 and a groove 8.
Detailed Description
As shown in fig. 1-6, the present invention provides a technical solution: the nut screwing-off experiment tool comprises a rigid mounting plate 1, a lower positioning mechanism 4, an upper positioning mechanism 5, four fixing bolts 6, two clamping mechanisms 7 and two grooves 8, wherein the rigid mounting plate 1 is positioned between the lower positioning mechanism 4 and the upper positioning mechanism 5, the four fixing bolts 6 are respectively positioned above and below the rigid mounting plate 1, the two clamping mechanisms 7 are respectively positioned in an inner cavity of the lower positioning mechanism 4 and an inner cavity of the upper positioning mechanism 5, the two grooves 8 are respectively arranged on the right sides of the inner sides of the lower positioning mechanism 4 and the upper positioning mechanism 5, the rigid mounting plate 1 comprises a first through hole 2 and two second through holes 3, the first through hole 2 is arranged at the central position of the rigid mounting plate 1, the two second through holes 3 are respectively arranged at the vertical middle position of the rigid mounting plate 1, the two second through holes 3 are respectively positioned on the front side and the rear side of the first through hole 2, the lower positioning mechanism 4 comprises a first L-shaped base 401, an electric telescopic rod 402, a connecting base cushion 403, a protruding block 404 and two rollers 405, wherein the electric telescopic rod 402 is positioned at the left side of the first L-shaped base 401, the right end of the electric telescopic rod 402 is fixedly connected with the middle position of the left side surface of the first L-shaped base 401, the connecting base cushion 403 is positioned at the top of the first L-shaped base 401, the bottom of the connecting base cushion 403 is adhered to the top of the first L-shaped base 401, the protruding block 404 is positioned at the middle position of the top of the connecting base cushion 403, the bottom of the protruding block 404 is adhered to the top of the connecting base cushion 403, the two rollers 405 are respectively positioned at the tops of the left side and the right side of the first L-shaped base 401, and the inner side of the rollers 405 is fixedly connected with the left side and the right side of the outer wall of the connecting base cushion 403.
The upper positioning mechanism 5 comprises a second L-shaped base 501, a cavity 502, a concave area 503, a threaded rod 504 and two slide ways 505, wherein the cavity 502 is arranged at the left side of the bottom of the second L-shaped base 501, the concave area 503 is arranged at the middle position of the top of the inner wall of the cavity 502, the threaded rod 504 is arranged at the middle position of the top of the left side of the second L-shaped base 501, the right side surface of the threaded rod 504 is welded with the left side of the second L-shaped base 501, the two slide ways 505 are arranged in the cavity 502, the outer walls of the two slide ways 505 are fixedly connected with the left side and the right side of the inner wall of the cavity 502, the clamping mechanism 7 comprises a lifting block 701, a connecting rod 702 and an arc clamping block 703, the connecting rod 702 is arranged at the middle position of the bottom of the lifting block 701, the top of the connecting rod 702 is fixedly connected with the bottom of the lifting block 701, the arc clamping block 703 is arranged at the bottom of the middle position of the top of the arc clamping block 703 is fixedly connected with the bottom of the connecting rod 702, the top of the first L-shaped base 401 penetrates through the bottom of the second L-shaped base 501 and extends to the cavity 502 formed by the second L-shaped base 501, one end of the two rollers 405 far away from the connecting base cushion 403 is respectively and movably connected with the inner walls of the two slide ways 505, the first L-shaped base 401 is movably connected with the second L-shaped base 501 through the two rollers 405, the inner wall of the concave area 503 is adhered with a rubber pad, the size of the convex block 404 is matched with the size of the concave area 503, one end of the connecting rod 702 far away from the lifting block 701 penetrates through the first L-shaped base 401 and the second L-shaped base 501 respectively and extends to the top of the first L-shaped base 401 and the bottom of the second L-shaped base 501, the top and the bottom of the rigid mounting plate 1 are respectively connected with one sides of a groove 8 formed by the top of the first L-shaped base 401 and a groove 8 formed by the bottom of the second L-shaped base 501, the transverse length of the threaded rod 504 is equal to the furthest stroke of the electric telescopic rod 402, the threaded rod 504 is positioned at the longitudinal middle position of the two fixing bolts 6, the rigid mounting plate 1 is a circular mounting plate, and the radian of the circular clamping block 703 is matched with the radian of the rigid mounting plate 1.
Embodiment one:
as shown in fig. 5, the rigid mounting plate 1 is a rectangular mounting plate, the rigid mounting plate 1 includes a first through hole 2 and two second through holes 3, the first through hole 2 is disposed at a middle position of the rigid mounting plate 1, the two second through holes 3 are both disposed at a vertical middle position of the rigid mounting plate 1, and the two second through holes 3 are respectively disposed at a front side and a rear side of the first through hole 2.
Embodiment two:
As shown in fig. 6, the rigid mounting plate 1 is a circular mounting plate, the rigid mounting plate 1 includes a first through hole 2 and four second through holes 3, the first through hole 2 is disposed at a middle position of the rigid mounting plate 1, the four second through holes 3 are all disposed on the rigid mounting plate 1, and the four second through holes 3 are symmetrically distributed around the first through hole 2.
When the device is used, the rigid mounting plate 1 is placed in the groove 8 formed between the lower positioning mechanism 4 and the upper positioning mechanism 5, the first L-shaped base 401 is moved, the first L-shaped base 401 penetrates into the part of the second L-shaped base 501, the first L-shaped base 401 slides smoothly under the action of the roller 405 to adapt to the size of the rigid mounting plate 1, then a hand presses the lifting block 701 inwards, the lifting block 701 drives the circular arc clamping block 703 to move close to the position of the rigid mounting plate 1 through the connecting rod 702, the rigid mounting plate 1 is tightly clamped, after the fixed connection of the rigid mounting plate 1 and the lower positioning mechanism 4 and the upper positioning mechanism 5 is completed, the threaded rod 504 fixedly connected to the left side of the lower positioning mechanism 4 is screwed into the torsion experiment machine, the electric telescopic rod 402 enters into the through hole fixedly formed in the torsion experiment machine, and finally the fixed connection and installation of the torsion experiment machine and the lower positioning mechanism 4 and the upper positioning mechanism 5 are completed through screwing the fixing bolt 6 into the right end of the lower positioning mechanism 4 and the upper positioning mechanism 5.
In summary, the U-shaped groove fixture is divided into the lower positioning mechanism 4 and the upper positioning mechanism 5, the top of the lower positioning mechanism 4 extends into the cavity 502 formed in the inner cavity of the upper positioning mechanism 5, so that the vertical distance between the lower positioning mechanism 4 and the upper positioning mechanism 5 is adjusted, the nut screwing-off experiment accuracy is not affected for adapting to rigid mounting plates 1 with different sizes, the clamping mechanisms 7 are arranged at the bottom of the lower positioning mechanism 4 and the top of the upper positioning mechanism 5 in a penetrating way, the rigid mounting plates 1 are fixed between the lower positioning mechanism 4 and the upper positioning mechanism 5 through the arc clamping blocks 703, so that the clamping mechanisms 7 work cooperatively with the lower positioning mechanism 4 and the upper positioning mechanism 5, on one hand, the adaptability of the U-shaped groove fixture is enhanced, and on the other hand, in the nut screwing-off experiment, the positioning of the rigid mounting plate 1 is more accurate, the roller 405 is fixedly arranged at the top of the left side and the right side of the first L-shaped base 401, the roller 405 is positioned in the slideway 505 arranged on the inner wall of the cavity 502, so that the sliding of the first L-shaped base 401 and the second L-shaped base 501 is smoother, meanwhile, the concave area 503 is arranged in the cavity 502, the top of the first L-shaped base 401 is provided with the protruding block 404 to form a simple limiting device, the additional damage to the rigid mounting plate 1 is not caused in the process of clamping the rigid mounting plate 1 by the U-shaped groove tool is further ensured, the fixing bolt 6 is inserted from the right side surfaces of the first L-shaped base 401 and the second L-shaped base 501 and extends to the outer end to be fixedly connected with a torsion experiment machine, and further, the fixing function of the threaded rod 504 and the electric telescopic rod 402 is realized, the U-shaped groove tool is more tightly connected with the torsion experiment machine.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a reference structure" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a nut is twisted and is taken off experiment frock, includes rigid mounting plate (1), lower positioning mechanism (4), goes up positioning mechanism (5), four fixing bolt (6), two clamping mechanism (7) and two recess (8), its characterized in that: the rigid mounting plate (1) is positioned between the lower positioning mechanism (4) and the upper positioning mechanism (5), four fixing bolts (6) are respectively positioned above and below the rigid mounting plate (1), two clamping mechanisms (7) are respectively positioned in the inner cavity of the lower positioning mechanism (4) and the inner cavity of the upper positioning mechanism (5), two grooves (8) are respectively arranged on the right sides of the inner sides of the lower positioning mechanism (4) and the upper positioning mechanism (5), the rigid mounting plate (1) comprises a first through hole (2) and two second through holes (3), the first through hole (2) is arranged at the central position of the rigid mounting plate (1), the two second through holes (3) are respectively arranged at the vertical middle position of the rigid mounting plate (1), the two second through holes (3) are respectively positioned on the front side and the rear side of the first through hole (2), the lower positioning mechanism (4) comprises a first L-shaped base (401), an electric telescopic rod (403), a connecting base pad (403), a protruding block (404) and two rollers (405), the first through hole (2) are arranged at the middle position of the first L-shaped base (401), the left side of the electric rod (401) is positioned at the middle position of the first L-shaped base (401), the bottom of the connecting base pad (403) is connected with the top of the first L-shaped base (401), the protruding block (404) is positioned in the middle of the top of the connecting base pad (403), the bottom of the protruding block (404) is connected with the top of the connecting base pad (403), the two rollers (405) are respectively positioned at the top of the left side and the right side of the first L-shaped base (401), and the inner sides of the rollers (405) are connected with the left side and the right side of the outer wall of the connecting base pad (403);
The upper positioning mechanism (5) comprises a second L-shaped base (501), a cavity (502), a concave area (503), a threaded rod (504) and two slide ways (505), wherein the cavity (502) is arranged at the left side of the bottom of the second L-shaped base (501), the concave area (503) is arranged at the middle position of the top of the inner wall of the cavity (502), the threaded rod (504) is positioned at the middle position of the top of the left side of the second L-shaped base (501), the right side surface of the threaded rod (504) is connected with the left side of the second L-shaped base (501), the two slide ways (505) are positioned in the cavity (502), the outer walls of the two slide ways (505) are connected with the left side and the right side of the inner wall of the cavity (502), the clamping mechanism (7) comprises a lifting block (701), a connecting rod (702) and an arc clamping block (703), the connecting rod (702) is positioned at the middle position of the bottom of the lifting block (701), the top of the connecting rod (702) is connected with the bottom of the lifting block (701), the connecting rod (703) is positioned at the middle position of the bottom of the connecting rod (702), and the bottom of the connecting rod (702) is connected with the middle position of the arc clamping block (703).
The top of the first L-shaped base (401) penetrates through the bottom of the second L-shaped base (501) and extends into a cavity (502) formed in the second L-shaped base (501);
One end of each roller (405) far away from the connecting base pad (403) is connected with the inner walls of each slideway (505), and the first L-shaped base (401) is connected with the second L-shaped base (501) through the two rollers (405).
2. The nut screwing-off experimental fixture according to claim 1, wherein: the inner wall of the concave area (503) is connected with a rubber pad, and the size of the protruding block (404) is matched with the size of the concave area (503).
3. The nut screwing-off experimental fixture according to claim 1, wherein: one end of the connecting rod (702) far away from the lifting block (701) penetrates through the first L-shaped base (401) and the second L-shaped base (501) respectively and extends to the top of the first L-shaped base (401) and the bottom of the second L-shaped base (501).
4. The nut screwing-off experimental fixture according to claim 1, wherein: the top and the bottom of the rigid mounting plate (1) are respectively connected with one side of a groove (8) formed in the top of the first L-shaped base (401) and one side of a groove (8) formed in the bottom of the second L-shaped base (501).
5. The nut screwing-off experimental fixture according to claim 1, wherein: the transverse length of the threaded rod (504) is equal to the furthest stroke of the electric telescopic rod (402), and the threaded rod (504) is positioned at the longitudinal middle position of the two fixing bolts (6).
6. The nut screwing-off experimental fixture according to claim 1, wherein: the rigid mounting plate (1) is a circular mounting plate, and the radian of the circular clamping block (703) is matched with the radian of the rigid mounting plate (1).
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 |
Publications (2)
| Publication Number | Publication Date |
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| CN110441037A CN110441037A (en) | 2019-11-12 |
| CN110441037B true CN110441037B (en) | 2024-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811596081.0A Active CN110441037B (en) | 2018-12-25 | 2018-12-25 | Nut screwing-off experiment tool |
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| 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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2018
- 2018-12-25 CN CN201811596081.0A patent/CN110441037B/en active Active
Patent Citations (7)
| 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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| CN110441037A (en) | 2019-11-12 |
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