CN109531507B - Auxiliary tool for installing fastener in narrow space - Google Patents
Auxiliary tool for installing fastener in narrow space Download PDFInfo
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- CN109531507B CN109531507B CN201910017474.XA CN201910017474A CN109531507B CN 109531507 B CN109531507 B CN 109531507B CN 201910017474 A CN201910017474 A CN 201910017474A CN 109531507 B CN109531507 B CN 109531507B
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- gasket
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- clamping arm
- clamping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
- B25B27/143—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same for installing wire thread inserts or tubular threaded inserts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
Abstract
A auxiliary fixtures for installation of narrow and small space fastener, gasket arm lock centering clamping mechanism drive gasket arm lock I and gasket arm lock II are inboard to slide, and the gasket is pressed from both sides tightly fixedly by the circular arc groove of left and right sides. The nut clamping arm centering and clamping mechanism drives the nut clamping arm I and the nut clamping arm II to slide inwards, and the nut is clamped and fixed by the clamping head I and the clamping head II. The nut is coaxial with the gasket after being clamped and fixed, then the gasket clamping arm and the nut clamping arm are inserted into a narrow space of an airplane by the handheld base, the gasket is inserted into a bolt which needs to be fixed, the nut is aligned with the bolt which needs to be installed, then the nut is rotated by a certain angle, the nut is screwed on the bolt by a certain angle, the gasket clamping arm I and the gasket clamping arm II are driven to slide outwards and open, and the nut clamping arm I and the nut clamping arm II are driven to slide outwards and open. And taking out the whole tool. The mounting operation of the gasket and the nut in the area where the human hand cannot enter is solved, and the efficiency is improved.
Description
Technical Field
The invention relates to the technical field of aircraft maintenance tools, in particular to an auxiliary tool for installing fasteners in a narrow space.
Background
During normal maintenance work of an aircraft, a large number of fasteners are required to be installed, but for the design requirement of the aircraft, the fasteners with a plurality of structural components are in extremely narrow areas inconvenient to disassemble and assemble, which not only wastes extremely long time during installation, but also possibly causes the fasteners to fall off due to the limitation of the working area, the fasteners are extremely difficult to find in many cases once falling off, a great deal of precious time is wasted in the process, and if the falling fasteners cannot be found in a short time, the aircraft release is influenced by the existence of the FOD according to the rule of the aircraft, and even the safety of the aircraft is influenced. If tens of thousands of fasteners are required to be installed during the passenger and cargo-changing operation of the boeing 737 series aircraft, it is counted that about 2% of fasteners are unfavorable to be installed, and on such a large base, the existing installation method will greatly cause man-hour waste and potential safety hazard.
Disclosure of Invention
The invention provides an auxiliary tool for installing a fastener in a narrow space, which is used for improving the installation efficiency and accuracy of an aircraft fastener.
The technical scheme adopted for overcoming the technical problems is as follows:
an auxiliary fixture for installation of a narrow space fastener, comprising:
the upper end of the base is provided with two gasket clamping arms I and gasket clamping arms II which extend towards the front end and are parallel to each other, and the lower end of the base is provided with two nut clamping arms I and nut clamping arms II which extend towards the front end and are parallel to each other;
the gasket clamping arm sliding mechanism is arranged in the base, and the tail ends of the gasket clamping arm I and the gasket clamping arm II are horizontally and slidably arranged on the base along the left-right direction through the gasket clamping arm sliding mechanism;
the nut clamping arm sliding mechanism is arranged in the base, and the tail ends of the nut clamping arm I and the nut clamping arm II are horizontally and slidably arranged on the base along the left-right direction through the gasket clamping arm sliding mechanism;
the inner sides of the head ends of the nut clamping arms I and II are provided with arc grooves, the head end of the nut clamping arm I is provided with a chuck I matched with the hexagonal surface of the nut, and the head end of the nut clamping arm II is provided with a chuck II matched with the hexagonal surface of the nut;
the gasket clamping arm centering and clamping mechanism drives the gasket clamping arm I and the gasket clamping arm II to slide inwards until the left end and the right end of the gasket are respectively clamped in the corresponding arc grooves on the same side; and
the nut clamping arm centering and clamping mechanism drives the nut clamping arm I and the nut clamping arm II to slide inwards until the left end and the right end of the nut are respectively contacted with the clamping heads II on the same side, and the nut and the gasket are coaxial.
The gasket arm lock slide mechanism includes screw hole I that sets up respectively in the base left and right sides both ends, the guide pin bushing of level in screw hole I that closes and respectively horizontal installation in gasket arm lock I and the guide arm I of gasket arm lock II outside end, the guide arm I slip cartridge of gasket arm lock I is in the guide pin bushing that the left side corresponds, the guide arm I slip cartridge of gasket arm lock II is in the guide pin bushing that the right side corresponds.
The nut arm lock slide mechanism includes along horizontal direction horizontal installation guide arm II in the base and slidable mounting slide I and slide II on guide arm II, the front end of slide I is provided with screw rod I along fore-and-aft direction level, and nut arm lock I closes on screw rod I soon, the front end of slide II is provided with screw rod II along fore-and-aft direction level, and nut arm lock II closes on screw rod II soon.
The gasket arm lock centering clamping mechanism comprises a spring I sleeved on a guide rod I, one end of the left spring I is connected with the gasket arm lock I, the other end of the left spring I is connected with a base, one end of the right spring I is connected with a gasket arm lock II, and the other end of the right spring I is connected with the base.
The nut clamping arm centering and clamping mechanism comprises springs II sleeved at the left end and the right end of a guide rod II respectively, one end of the left spring II is connected with a sliding seat I, the other end of the left spring II is connected with a base, one end of the right spring II is connected with the sliding seat II, and the other end of the right spring II is connected with the base.
In order to be convenient for drive gasket arm lock I and gasket arm lock II, still include the upper cover that is fixed in the base upper end through screw I, be provided with slot hole II along left and right directions on the upper cover, the rear end of gasket arm lock I is provided with screw III, and ball screw passes in screw III of slot hole II back spin in gasket arm lock I, and the rear end of gasket arm lock II is provided with screw III, and ball screw passes in screw III of slot hole II back spin in gasket arm lock II.
In order to realize the locking, still include the lower cover that is fixed in the base lower extreme through screw II, be provided with slot hole I along left and right directions on the lower cover, all be provided with screw II on slide I and the slide II, one holding screw passes behind slot hole I and closes in screw hole II of slide I soon, and another holding screw passes behind slot hole I and closes in screw hole II of slide II soon.
In order to improve the guidance quality, above-mentioned slide I and II lower extreme are provided with boss I respectively, and slide I and II upper ends are provided with boss II respectively, are provided with along left and right directions on the base with boss II assorted spout II, cover down along left and right directions be provided with boss I assorted spout I, boss I slip cartridge in spout I, boss II slip cartridge in spout II.
The beneficial effects of the invention are as follows: the gasket clamping arm centering and clamping mechanism drives the gasket clamping arm I and the gasket clamping arm II to slide inwards, and the gasket is clamped and fixed by the arc grooves on the left side and the right side. The nut clamping arm centering and clamping mechanism drives the nut clamping arm I and the nut clamping arm II to slide inwards, and the nut is clamped and fixed by the clamping head I and the clamping head II. The nut is coaxial with the gasket after being clamped and fixed, then the gasket clamping arm and the nut clamping arm are inserted into a narrow space of an airplane by the handheld base, the gasket is inserted into a bolt which needs to be fixed, the nut is aligned with the bolt which needs to be installed, then the nut is rotated by a certain angle, the nut is screwed on the bolt by a certain angle, the gasket clamping arm I and the gasket clamping arm II are driven to slide outwards and open, and the nut clamping arm I and the nut clamping arm II are driven to slide outwards and open. And taking out the whole tool. The nut already hung on the bolt can be screwed by means of a tool. The mounting operation of the gasket and the nut in the area where the human hand cannot enter is solved, and the efficiency is improved.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic view of a three-dimensional exploded structure of the present invention;
in the drawing, 1, a base 2, an upper cover 3, a gasket clamping arm I4, a gasket clamping arm II 5, an arc groove 6, a gasket 7, a screw hole I8, a guide sleeve 9, a guide rod I10, a spring I11, a lower cover 12, a screw I13, a screw II 14, a guide rod II 15, a sliding seat I16, a sliding seat II 17, a spring II 18, a screw I19, a screw II 20, a nut clamping arm I21, a nut clamping arm II 22, a clamping head I23, a clamping head II 24, a nut 25, a screw hole II 26, a long hole I27, a set screw 28, a sliding groove I29, a boss I30, a boss II 31, a sliding groove II 32, a screw hole III 33, a long hole II 34 and a ball screw.
Detailed Description
The invention is further described with reference to fig. 1 and 2.
An auxiliary fixture for installation of a narrow space fastener, comprising: the base 1 is provided with two gasket clamping arms I3 and II 4 which extend towards the front end and are parallel to each other at the upper end, and two nut clamping arms I20 and II 21 which extend towards the front end and are parallel to each other at the lower end; the gasket clamping arm sliding mechanism is arranged in the base 1, and the tail ends of the gasket clamping arms I3 and II 4 are horizontally and slidably arranged on the base 1 along the left-right direction through the gasket clamping arm sliding mechanism; the nut clamping arm sliding mechanism is arranged in the base 1, and the tail ends of the nut clamping arm I20 and the nut clamping arm II 21 are horizontally and slidably arranged on the base 1 along the left-right direction through the gasket clamping arm sliding mechanism; the inner sides of the head ends of the nut clamping arms I20 and II 21 are provided with arc grooves 5, the head end of the nut clamping arm I20 is provided with a chuck I22 matched with the hexagonal surface of the nut 24, and the head end of the nut clamping arm II 21 is provided with a chuck II 23 matched with the hexagonal surface of the nut 24; the gasket clamping arm centering and clamping mechanism drives the gasket clamping arm I3 and the gasket clamping arm II 4 to slide inwards until the left end and the right end of the gasket 6 are respectively clamped in the corresponding arc grooves 5 on the same side; and the nut clamping arm centering and clamping mechanism drives the nut clamping arm I20 and the nut clamping arm II 21 to slide inwards until the left end and the right end of the nut 24 are respectively contacted with the clamping heads II 23 on the same side, and the nut 24 is coaxial with the gasket 6. During the use, slide gasket arm lock I3 and gasket arm lock II 4 outside respectively through gasket arm lock slide mechanism, realize opening of gasket arm lock I3 and gasket arm lock II 4, put into gasket 6 between gasket arm lock I3 and the gasket arm lock II 4, later gasket arm lock centering clamping mechanism drive gasket arm lock I3 and gasket arm lock II 4 to inboard slide, gasket 6 is pressed from both sides fixedly by the circular arc groove 5 of left and right sides. The nut clamping arm I20 and the nut clamping arm II 21 are driven to slide outwards through the nut clamping arm sliding mechanism, the nut clamping arm I20 and the nut clamping arm II 21 are opened, the nut 24 is placed between the nut clamping arm I20 and the nut clamping arm II 21, and then the nut clamping arm centering clamping mechanism drives the nut clamping arm I20 and the nut clamping arm II 21 to slide inwards, and the nut 24 is clamped and fixed by the clamping head I22 and the clamping head II 23. The nut 24 is clamped and fixed and then is coaxial with the gasket 6, then the base 1 is held, the gasket clamping arm and the nut clamping arm are inserted into a narrow space of an airplane, the gasket is inserted into a bolt to be fixed, the nut is aligned with the bolt to be installed, then the nut is rotated for a certain angle, the nut is screwed on the bolt for a certain angle, then the gasket clamping arm I3 and the gasket clamping arm II 4 are driven to slide outwards for opening, and the nut clamping arm I20 and the nut clamping arm II 21 are driven to slide outwards for opening. And taking out the whole tool. The nut already hung on the bolt can be screwed by means of a tool. The mounting operation of the gasket 6 and the nut 24 in the area where the human hand cannot enter is solved, and the efficiency is improved.
The gasket arm lock slide mechanism can be following structure, and it includes set up respectively in the screw I7 of base 1 left and right sides both ends, the guide pin bushing 8 of level in screw I7 and respectively horizontal installation in gasket arm lock I3 and gasket arm lock II 4 outside end guide arm I9, the guide arm I9 slip cartridge of gasket arm lock I3 is in the guide pin bushing 8 that the left side corresponds, the guide arm I9 slip cartridge of gasket arm lock II 4 is in the guide pin bushing 8 that the right side corresponds. The gasket arm lock I3 and the gasket arm lock II 4 have realized the motion of left and right directions through guide arm I9 along guide pin bushing 8 axial slip respectively.
The nut clamping arm sliding mechanism can be of a structure comprising a guide rod II 14 horizontally arranged in the base 1 along the left-right direction, a sliding seat I15 and a sliding seat II 16 slidably arranged on the guide rod II 14, a screw rod I18 horizontally arranged at the front end of the sliding seat I15 along the front-back direction, a nut clamping arm I20 screwed on the screw rod I18, a screw rod II 19 horizontally arranged at the front end of the sliding seat II 16 along the front-back direction, and a nut clamping arm II 21 screwed on the screw rod II 19. The sliding seat I15 slides along the left and right directions of the guide rod II 14 to realize the left and right direction movement of the driving nut clamping arm I20, and the sliding seat II 16 slides along the left and right directions of the guide rod II 14 to realize the left and right direction movement of the driving nut clamping arm II 21. The nut clamp arm I20 rotates relative to the screw rod I18, the nut clamp arm II 21 rotates relative to the screw rod I18, the extending length of the nut clamp arm I20 and the extending length of the nut clamp arm II 21 can be adjusted in an adapting mode according to nuts 24 of different types, and the nuts 24 of different specifications are ensured to be coaxial with the gasket 6 after being clamped by the nut clamp arm I20 and the nut clamp arm II 21.
The gasket arm lock centering clamping mechanism can be of a structure comprising a spring I10 sleeved on a guide rod I9, one end of the spring I10 on the left side is connected with a gasket arm lock I3, the other end of the spring I is connected with a base 1, one end of the spring I10 on the right side is connected with a gasket arm lock II 4, and the other end of the spring I is connected with the base 1. The springs I10 on the two sides push the gasket clamping arms I3 and II 4 to move inwards in a free state, so that the gasket clamping arms I3 and II 4 clamp and fix the gasket 6.
The nut clamping arm centering and clamping mechanism can be of a structure comprising springs II 17 sleeved at the left end and the right end of a guide rod II 14 respectively, one end of the left spring II 17 is connected with a sliding seat I15, the other end of the left spring II is connected with a base 1, one end of the right spring II 17 is connected with a sliding seat II 16, and the other end of the right spring II is connected with the base 1. The springs ii 17 on both sides push the slide base i 15 and the slide base ii 16 to move inward in a free state, respectively, so that the nut clamping arm i 20 and the nut clamping arm ii 21 move inward to clamp the nut 24.
Further, the upper cover 2 is fixed to the upper end of the base 1 through the screw I12, a long hole II 33 is formed in the upper cover 2 along the left-right direction, a screw hole III 32 is formed in the rear end of the gasket clamping arm I3, the ball screw 34 penetrates through the long hole II 33 and then is screwed into the screw hole III 32 of the gasket clamping arm I3, a screw hole III 32 is formed in the rear end of the gasket clamping arm II 4, and the ball screw 34 penetrates through the long hole II 33 and then is screwed into the screw hole III 32 of the gasket clamping arm II 4. When the gasket clamping arm I3 and the gasket clamping arm II 4 move in the left-right direction, the corresponding ball screws 34 are respectively driven to slide in the long holes II 33, and the gasket clamping arm I3 and the gasket clamping arm II 4 can be conveniently controlled to move outwards to be in an open state through the ball screws 34. And simultaneously, the center position of the gasket 6 clamped by the gasket clamping arm I3 and the gasket clamping arm II 4 is convenient to adjust.
Further, the lower cover 11 is fixed to the lower end of the base 1 through a screw II 13, a long hole I26 is formed in the lower cover 11 along the left-right direction, screw holes II 25 are formed in the sliding seat I15 and the sliding seat II 16, one set screw 27 penetrates through the long hole I26 and then is screwed into the screw hole II 25 of the sliding seat I15, and the other set screw 27 penetrates through the long hole I26 and then is screwed into the screw hole II 25 of the sliding seat II 16. When the sliding seat I15 and the sliding seat II 16 inwards slide to the nut clamping arm I20 and the nut clamping arm II 21 to clamp and fix the nut 24, the fastening screw 27 is screwed, so that the positions of the sliding seat I15 and the sliding seat II 16 are locked and fixed, and the nut 24 is effectively prevented from falling due to the fact that the nut 24 is forced to drive the nut clamping arm I20 and the nut clamping arm II 21 to open outwards.
The lower extreme of slide I15 and slide II 16 is provided with boss I29 respectively, and slide I15 and slide II 16 upper end are provided with boss II 30 respectively, are provided with along left and right directions on the base 1 with boss II 30 assorted spout II 31, be provided with along left and right directions on the lower cover 11 with boss I29 assorted spout I28, boss I29 slip cartridge is in spout I28, boss II 30 slip cartridge is in spout II 31. Through setting up boss I29 and sliding in spout I28, boss II 30 slides in spout II 31, has improved the guidance quality.
Claims (8)
1. A auxiliary fixtures for installation of narrow and small space fastener, its characterized in that includes:
the base (1) is provided with two gasket clamping arms I (3) and gasket clamping arms II (4) which extend towards the front end and are parallel to each other at the upper end, and two nut clamping arms I (20) and nut clamping arms II (21) which extend towards the front end and are parallel to each other at the lower end;
the gasket clamping arm sliding mechanism is arranged in the base (1), and the tail ends of the gasket clamping arm I (3) and the gasket clamping arm II (4) are horizontally and slidably arranged on the base (1) along the left-right direction through the gasket clamping arm sliding mechanism;
the nut clamping arm sliding mechanism is arranged in the base (1), and the tail ends of the nut clamping arm I (20) and the nut clamping arm II (21) are horizontally and slidably arranged on the base (1) along the left-right direction through the gasket clamping arm sliding mechanism;
the inner sides of the head ends of the nut clamping arms I (20) and the nut clamping arms II (21) are provided with arc grooves (5), the head end of the nut clamping arm I (20) is provided with a chuck I (22) matched with the hexagonal surface of the nut (24), and the head end of the nut clamping arm II (21) is provided with a chuck II (23) matched with the hexagonal surface of the nut (24);
the gasket clamping arm centering and clamping mechanism drives the gasket clamping arm I (3) and the gasket clamping arm II (4) to slide inwards until the left end and the right end of the gasket (6) are respectively clamped in the corresponding arc grooves (5) on the same side; and
the nut clamping arm centering and clamping mechanism drives the nut clamping arm I (20) and the nut clamping arm II (21) to slide inwards until the left end and the right end of the nut (24) are respectively contacted with the clamping heads II (23) on the same side, and the nut (24) is coaxial with the gasket (6).
2. The auxiliary tool for installing a small space fastener according to claim 1, wherein: the gasket arm lock slide mechanism is including setting up respectively in screw I (7) at both ends about base (1), level closes guide pin bushing (8) in screw I (7) and respectively horizontal installation in gasket arm lock I (3) and gasket arm lock II (4) guide arm I (9) of outside end, and the guide arm I (9) slip cartridge of gasket arm lock I (3) is in guide pin bushing (8) that the left side corresponds, and the guide arm I (9) slip cartridge of gasket arm lock II (4) is in guide pin bushing (8) that the right side corresponds.
3. The auxiliary tool for installing a small space fastener according to claim 1, wherein: the nut clamp arm sliding mechanism comprises a guide rod II (14) horizontally installed in a base (1) along the left-right direction, a sliding seat I (15) and a sliding seat II (16) slidably installed on the guide rod II (14), a screw rod I (18) is horizontally arranged at the front end of the sliding seat I (15) along the front-back direction, a nut clamp arm I (20) is screwed on the screw rod I (18), a screw rod II (19) is horizontally arranged at the front end of the sliding seat II (16) along the front-back direction, and a nut clamp arm II (21) is screwed on the screw rod II (19).
4. The auxiliary tool for installing a small space fastener according to claim 2, wherein: the gasket arm lock centering clamping mechanism comprises a spring I (10) sleeved on a guide rod I (9), one end of the spring I (10) on the left side is connected with the gasket arm lock I (3), the other end of the spring I is connected with the base (1), one end of the spring I (10) on the right side is connected with the gasket arm lock II (4), and the other end of the spring I is connected with the base (1).
5. An auxiliary tool for installing a small space fastener according to claim 3, wherein: the nut clamping arm centering and clamping mechanism comprises springs II (17) sleeved at the left end and the right end of a guide rod II (14) respectively, one end of the left spring II (17) is connected with a sliding seat I (15), the other end of the left spring II is connected with a base (1), one end of the right spring II (17) is connected with a sliding seat II (16), and the other end of the right spring II is connected with the base (1).
6. The auxiliary tool for installing a small space fastener according to claim 1, wherein: the novel gasket clamping arm is characterized by further comprising an upper cover (2) fixed at the upper end of the base (1) through a screw I (12), a long hole II (33) is formed in the upper cover (2) along the left-right direction, a screw hole III (32) is formed in the rear end of the gasket clamping arm I (3), a ball screw (34) penetrates through the long hole II (33) and then is screwed into the screw hole III (32) of the gasket clamping arm I (3), a screw hole III (32) is formed in the rear end of the gasket clamping arm II (4), and a ball screw (34) penetrates through the long hole II (33) and then is screwed into the screw hole III (32) of the gasket clamping arm II (4).
7. An auxiliary tool for installing a small space fastener according to claim 3, wherein: the novel sliding seat is characterized by further comprising a lower cover (11) fixed at the lower end of the base (1) through a screw II (13), long holes I (26) are formed in the lower cover (11) along the left-right direction, screw holes II (25) are formed in the sliding seat I (15) and the sliding seat II (16), one set screw (27) penetrates through the long holes I (26) and then is screwed into the screw holes II (25) of the sliding seat I (15), and the other set screw (27) penetrates through the long holes I (26) and then is screwed into the screw holes II (25) of the sliding seat II (16).
8. The auxiliary tool for installing a small space fastener according to claim 7, wherein: the sliding seat is characterized in that bosses I (29) are respectively arranged at the lower ends of the sliding seat I (15) and the sliding seat II (16), bosses II (30) are respectively arranged at the upper ends of the sliding seat I (15) and the sliding seat II (16), sliding grooves II (31) matched with the bosses II (30) are arranged on the base (1) along the left-right direction, sliding grooves I (28) matched with the bosses I (29) are arranged on the lower cover (11) along the left-right direction, the bosses I (29) are slidably inserted into the sliding grooves I (28), and the bosses II (30) are slidably inserted into the sliding grooves II (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910017474.XA CN109531507B (en) | 2019-01-09 | 2019-01-09 | Auxiliary tool for installing fastener in narrow space |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910017474.XA CN109531507B (en) | 2019-01-09 | 2019-01-09 | Auxiliary tool for installing fastener in narrow space |
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| CN109531507A CN109531507A (en) | 2019-03-29 |
| CN109531507B true CN109531507B (en) | 2023-08-15 |
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| CN201910017474.XA Active CN109531507B (en) | 2019-01-09 | 2019-01-09 | Auxiliary tool for installing fastener in narrow space |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111283635A (en) * | 2020-03-27 | 2020-06-16 | 江苏核电有限公司 | Off-line turnover device for nuclear turbine bearing |
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| CN109531507A (en) | 2019-03-29 |
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