CN213226013U - Duct chimb tooth lock nut not damaged dismounting device - Google Patents
Duct chimb tooth lock nut not damaged dismounting device Download PDFInfo
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- CN213226013U CN213226013U CN202021125034.0U CN202021125034U CN213226013U CN 213226013 U CN213226013 U CN 213226013U CN 202021125034 U CN202021125034 U CN 202021125034U CN 213226013 U CN213226013 U CN 213226013U
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- convex
- locking nut
- edge
- ring
- tooth
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- 230000001066 destructive effect Effects 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 11
- 238000012423 maintenance Methods 0.000 abstract description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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Abstract
A non-destructive dismounting device for a convex-edge tooth locking nut of a conduit is a circular ring with an opening, the opening of the circular ring is a conduit embedding opening, the length dimension L of the opening is not less than the diameter dimension phi of the conduit assembled with the convex-edge tooth locking nut to be dismounted, namely L is not less than phi; the inner wall of the ring is a cylindrical surface with a notch, and the diameter dimension D1 of the inner wall is larger than the diameter dimension D of the outer cylindrical surface of the convex-edge-tooth locking nut to be disassembled; a set of positioning lugs are radially arranged on one end face of the ring, and the positioning lugs are matched with the locking teeth of the convex-edge-tooth locking nut to be disassembled in structure and quantity. The utility model provides a chimb tooth lock nut at the damage problem of disassembling the in-process to reach the purpose that reduces aircraft cost of maintenance.
Description
Technical Field
The utility model relates to a nut dismounting device, especially a be suitable for and install not damaged dismounting device at the chimb tooth lock nut of pipe end.
Background
In aircraft fuel systems and environmental control systems, a large number of raised-edged tooth locking nuts are used to connect conduits. In order to ensure the safe flight of the aircraft, the connecting conduit is often tested and replaced during the overhaul thereof, thereby involving the problem of disassembling the knurled teeth locking nut 2. As shown in the attached drawing 1, the convex-edge-tooth locking nut 2 is made of an aluminum alloy material, a group of locking teeth 2-1 are arranged on the inner side edge of the convex-edge-tooth locking nut, and the convex-edge-tooth locking nut has the advantages of small radial size, space saving and the like, and is more beneficial to arrangement in narrow space of an aircraft.
When the convex edge tooth locking nut 2 is disassembled, a crescent wrench or a straight large tool can be adopted. If a crescent wrench is used, the operation method is that a positioning lug on the crescent wrench is fixed in a groove 2-2 between two adjacent locking teeth 2-1, and then the crescent wrench is reversely screwed to enable a nut and a conduit to be disassembled, but screwing force can only act on one locking tooth 2-1 in the screwing process, sealing glue for sealing is coated on mutually matched threads when the nut and the conduit 1 are assembled, the sealing glue is solidified after a major repair period, so that the nut is very difficult to disassemble, and the problems that the locking teeth are bitten and fall off when the crescent wrench is used for forcibly screwing are often caused; if the nut is disassembled by using the straight unclamping tool, firstly, the tool bit of the straight unclamping tool is abutted against the edge of the groove between the two adjacent locking teeth 2-1, and then the handle end of the unclamping tool is knocked by the hammer to rotate towards the loosening direction, so that the locking teeth are damaged, fall off blocks and deform by the tool bit of the straight unclamping tool, and the nut is scrapped. In conclusion, in order to solve the problem of disassembling the conduit and the convex-toothed locking nut, the optimal design of the non-damage disassembling device special for the convex-toothed locking nut is imperative.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pipe chimb tooth lock nut not damaged dismounting device aims at accomplishing the dismouting operation of pipe chimb tooth lock nut in the aircraft narrow space through the device is supplementary, reaches the purpose of avoiding chimb tooth lock nut to damage, reduce aircraft cost of maintenance.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a non-destructive dismounting device for a convex-edge tooth locking nut of a conduit is a circular ring with an opening, the opening of the circular ring is a conduit embedding opening, the length dimension L of the opening is not less than the diameter dimension phi of the conduit assembled with the convex-edge tooth locking nut to be dismounted, namely L is not less than phi; the inner wall of the ring is a cylindrical surface with a notch, and the diameter dimension D1 of the inner wall is larger than the diameter dimension D of the outer cylindrical surface of the convex-edge-tooth locking nut to be disassembled; a set of positioning lugs are radially arranged on one end face of the ring, and the positioning lugs are matched with the locking teeth of the convex-edge-tooth locking nut to be disassembled in structure and quantity.
Above-mentioned not damaged dismounting device of pipe chimb tooth lock nut, be equipped with a set of recess that shocks resistance on the ring outer wall, the recess that shocks resistance and ring central axis parallel arrangement.
According to the non-damage dismounting device for the pipe convex edge tooth locking nut, the annular outer wall is provided with the knurling textures.
Above-mentioned not damaged dismounting device of pipe chimb tooth lock nut, location lug and ring formula structure as an organic whole adopt 30CrMnSiA material to make.
The utility model provides a pipe chimb tooth lock nut not damaged dismounting device, especially be applicable to the chimb tooth lock nut's of the alloy aluminium material of configuration on the pipe not damaged dismouting operation, it regards the opening of ring as the embedding mouth of pipe, can suit the ring on the pipe first, then move the ring along the pipe axis to the chimb tooth lock nut direction that its tip was assembled, make the inner wall suit of ring wait to dismantle the chimb tooth lock nut lateral surface, each locating lug on the ring terminal surface imbeds in the recess between two adjacent lock teeth simultaneously, realize the axial and circumferential positioning of chimb tooth lock nut through locating lug; after the operation is finished, the head of the straight unclamping tool resisting knocking is used for propping against the positioning lug or the impact-resistant groove of the circular ring, and then the hammer is used for knocking the end part of the handle of the straight unclamping tool along the unscrewing direction, so that the convex-edge-tooth locking nut is detached from the guide pipe. In the operation process, because the plurality of locking teeth of the convex edge tooth locking nut bear the impact force simultaneously, the problem that the convex edge tooth locking nut is damaged and scrapped due to the stress of a single locking tooth is avoided, and the aim of reducing the maintenance cost of the aircraft is fulfilled.
Drawings
FIG. 1 is a schematic view of a conduit and lug tooth lock nut assembly;
FIG. 2 is a schematic structural view of the present invention;
fig. 3 is a top view of the present invention;
fig. 4 is a side view of the present invention;
FIG. 5 is a schematic view of the assembly process of the present invention with the guide tube and the knurled teeth locking nut;
fig. 6 is a side view of fig. 5.
The list of labels in the figure is:
1. a conduit; 2. 2-1 parts of a convex edge tooth locking nut, 2-2 parts of locking teeth and 2-2 parts of grooves; 3. 3-1 parts of a circular ring, 3-2 parts of an opening, 3-3 parts of a positioning bump, 3-4 parts of an inner wall, 3-5 parts of an impact-resistant groove and knurling textures.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
Referring to fig. 2, 3 and 4, the utility model provides a nondestructive dismounting device for a pipe convex edge tooth locking nut, which is a ring 3 with an opening, wherein the opening 3-1 of the ring 3 is a pipe embedding opening, the length L of the opening 3-1 is not less than the diameter phi of the pipe 1 assembled with the convex edge tooth locking nut 2 to be dismounted, namely L is not less than phi; the inner wall 3-3 of the ring 3 is a cylindrical surface with a gap, and the diameter D1 of the inner wall is larger than the diameter D of the outer cylindrical surface of the convex-edge tooth locking nut 2 to be disassembled; a group of positioning lugs 3-2 are radially arranged on one end face of the circular ring 3, the structure and the number of the positioning lugs 3-2 are matched with the locking teeth 2-1 of the convex-edge-tooth locking nut 2 to be disassembled, the positioning lugs and the circular ring 3 are of an integrated structure, and the circular ring 3 and the positioning lugs 3-2 are both made of 30CrMnSiA materials.
Referring to fig. 2 and 3, in the non-destructive dismounting device for locking nut of catheter convex edge tooth of the present invention, in a preferred embodiment of the non-destructive dismounting device, a set of anti-impact grooves 3-2 is disposed on the outer wall of the ring 3, and the anti-impact grooves 3-2 are disposed in parallel with the central axis of the ring 3.
Referring to fig. 2, in the non-destructive dismounting device for the locking nut of the convex edge tooth of the catheter of the present invention, in a preferred embodiment, the outer wall of the ring 3 is provided with knurled patterns 3-5.
Referring to fig. 5 and 6, the utility model provides a nondestructive dismounting device for conduit convex edge tooth locking nut, which is especially suitable for nondestructive dismounting operation of the alloy aluminum convex edge tooth locking nut 2 arranged on the conduit 1, the opening 3-1 of the circular ring 3 is used as the embedding opening of the conduit, in the process of disassembling the convex-edge tooth locking nut 2, the circular ring 3 can be sleeved on the conduit 1 firstly, then the circular ring 3 moves to the direction of the convex-edge tooth locking nut 2 assembled at the end part along the axis of the conduit 1, so that the inner wall 3-3 of the circular ring 3 is sleeved on the outer side surface of the convex-edge tooth locking nut 2 to be disassembled, meanwhile, each positioning lug 3-2 on the end surface of the circular ring 3 is embedded into a groove 2-2 between two adjacent locking teeth 2-1 of the convex-edge-tooth locking nut 2, the axial and circumferential positioning of the convex-edge tooth locking nut 2 is realized through the positioning bump 3-2; after the operation is finished, the anti-knocking straight-line unclamping head is abutted against one positioning convex block 3-2 or one anti-impact groove 3-4 of the circular ring, the end part of the handle of the straight-line unclamping tool is knocked by the hammer along the unscrewing direction until the convex edge tooth locking nut 2 is loosened, then the disassembly is carried out according to a conventional mode, in the process, the abutting position of the straight-line unclamping head can be continuously changed and abutted against the other positioning convex block 3-2 or the anti-impact groove 3-4, and the convex edge tooth locking nut 2 is loosened through the matching of the straight-line unclamping tool and the hammer.
In addition, to the condition that the convex edge tooth locking nut 2 still can not be loosened through the matching knocking mode of the straight unclamping tool and the hammer, a vibration impact method can be adopted for disassembling, and the specific operation steps are as follows: the pneumatic vibration gun is used, the vibration head is replaced by a straight-line-shaped tool bit, in order to prevent the phenomenon that the straight-line-shaped tool bit flies off during impact, the straight-line-shaped tool bit and the vibration gun can be bound and connected by rubber, after the combination of the utility model and the convex-edge tooth locking nut 2 is completed, the straight-line-shaped tool bit of the vibration gun is propped against a positioning lug 3-2 or an impact-resistant groove 3-4 of a circular ring, at the moment, the impact direction of the straight-line-shaped tool bit of the vibration gun is the unscrewing direction of the convex-edge tooth locking nut 2, then, a trigger of the vibration gun is slowly pulled by hands to form impact which is regular from slow to fast and from small to large, because the impact force of the pneumatic vibration gun is very large, the vibration gun must be firmly held by hands during the operation process so as to prevent damage to peripheral parts of the convex-edge tooth locking nut 2, when the convex-edge tooth locking nut 2 rotates and becomes loose, the positioning lug is matched with another positioning lug 3-2 or an impact-resistant groove 3-4, and then a normal disassembly method or a knocking disassembly method is adopted according to the loosening condition of the convex-edge tooth locking nut 2.
Claims (4)
1. A non-destructive dismounting device for a convex-edge tooth locking nut of a conduit is characterized by comprising a circular ring (3) with an opening, wherein the opening (3-1) of the circular ring (3) is a conduit embedding opening, the length dimension L of the opening (3-1) is not less than the diameter dimension phi of the conduit (1) assembled with the convex-edge tooth locking nut (2) to be dismounted, namely L is not less than phi; the inner wall (3-3) of the ring (3) is a cylindrical surface with a notch, and the diameter dimension D1 of the inner wall is larger than the diameter dimension D of the outer cylindrical surface of the convex-edge-tooth locking nut (2) to be disassembled; a group of positioning lugs (3-2) are radially arranged on one end face of the circular ring (3), and the structure and the number of the positioning lugs (3-2) are matched with the locking teeth (2-1) of the convex-edge-tooth locking nut (2) to be disassembled.
2. The device for the nondestructive disassembly of the locking nut of the catheter convex tooth as claimed in claim 1, characterized in that a group of impact-resistant grooves (3-4) are formed in the outer wall of the ring (3), and the impact-resistant grooves (3-4) are arranged in parallel with the central axis of the ring (3).
3. The device for the nondestructive detachment of the locking nut of the convex edge of the catheter as set forth in claim 2, characterized in that a knurled texture (3-5) is provided on the outer wall of the ring (3).
4. The device for the nondestructive detachment of the locking nut with the convex edge teeth of the conduit as claimed in claim 1, 2 or 3, wherein the positioning projection (3-2) and the ring (3) are of an integral structure and are made of 30CrMnSiA material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021125034.0U CN213226013U (en) | 2020-06-17 | 2020-06-17 | Duct chimb tooth lock nut not damaged dismounting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021125034.0U CN213226013U (en) | 2020-06-17 | 2020-06-17 | Duct chimb tooth lock nut not damaged dismounting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213226013U true CN213226013U (en) | 2021-05-18 |
Family
ID=75884826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021125034.0U Active CN213226013U (en) | 2020-06-17 | 2020-06-17 | Duct chimb tooth lock nut not damaged dismounting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213226013U (en) |
-
2020
- 2020-06-17 CN CN202021125034.0U patent/CN213226013U/en active Active
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