CN111456995A - Anti-loosening mechanism of straight-through ferrule type joint - Google Patents
Anti-loosening mechanism of straight-through ferrule type joint Download PDFInfo
- Publication number
- CN111456995A CN111456995A CN202010438203.4A CN202010438203A CN111456995A CN 111456995 A CN111456995 A CN 111456995A CN 202010438203 A CN202010438203 A CN 202010438203A CN 111456995 A CN111456995 A CN 111456995A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- teeth
- hole
- sliding sleeve
- ferrule
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 20
- 238000005245 sintering Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000005284 excitation Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/04—Locking of screws, bolts or nuts in which the locking takes place after screwing down with a member penetrating the screw-threaded surface of at least one part, e.g. a pin, a wedge, cotter-pin, screw
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
- F16L21/08—Joints with sleeve or socket with additional locking means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints With Pressure Members (AREA)
Abstract
The invention discloses an anti-loosening mechanism of a straight-through ferrule type joint, which comprises an internal tooth sleeve, a plurality of sliding sleeves and two fastening screws. The external surface of the internal tooth sleeve is cylindrical, and is provided with two radial thread through holes, and a plurality of internal teeth are uniformly distributed on the hole wall of the inner hole. A plurality of internal teeth are uniformly distributed on the wall of an inner hole of the sliding sleeve, the sliding sleeves can be combined together, the combined maximum external teeth can be matched with the inner tooth holes of the internal tooth sleeves, and the combined inner hole of the sliding sleeve with the minimum internal tooth hole in a large specification can be matched with the outer surface of the sliding sleeve with a small specification. The nut of the straight-through ferrule type joint and the joint body hexagon are rigidly connected by using an internal tooth sleeve or a combination of the internal tooth sleeve and a plurality of sliding sleeves, and are fixed by fastening screws, so that the nut is prevented from loosening, and the potential safety hazard in the prior art is solved.
Description
Technical Field
The invention relates to the technical field of a ferrule type joint, in particular to an anti-loosening mechanism of a straight-through ferrule type joint.
Background
The single ferrule type joint in the standards of ISO8434, SAE J514 and the like is widely applied to various hydraulic and pneumatic pipeline systems and is commonly used in the industries of airplanes, trains, shipping, engineering machinery, electric power, gas and the like.
The ferrule type joint is sealed by pushing the ferrule through the nut. The clamping sleeve is contacted with the nut through a smooth conical surface. When the ferrule type joint is used, due to the connection mode problem of the ferrule type joint and the influence of various internal and external factors such as vibration, pressure impact and the like, the ferrule and the nut slide along the contact conical surface, so that the nut is loosened, once the loosening starts to happen, the sealing performance of the whole connection is greatly influenced, even the failure of the whole pipeline system is possibly caused, and a serious safety result is generated.
Among the above ferrule type fittings, the straight-through ferrule type fitting occupies a very large proportion.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the anti-loosening mechanism of the straight-through ferrule type joint, which solves the problem of loosening of the straight-through ferrule type joint nut in the using process.
The technical scheme is as follows:
in order to solve the above problems, the present invention provides the following technical solutions: a locking mechanism of a straight-through ferrule type joint comprises an internal gear sleeve, a plurality of sliding sleeves and two fastening screws. The method is characterized in that:
the outer surface of the internal tooth sleeve is cylindrical, two radial thread through holes are formed at positions away from two end faces by a certain distance, an inner hole of the internal tooth sleeve is a through hole, a plurality of internal teeth are uniformly distributed on the hole wall, the included angle of the outer surface of the internal teeth is 120 degrees, the hexagonal of a nut or a product with a larger hexagonal in a matched through ferrule type joint can axially and freely penetrate through the inner hole of the internal tooth sleeve but cannot freely rotate in the hole, and the number of teeth of the inner hole of the internal tooth sleeve is integral multiple of 6;
when the number of the sliding sleeves is more than one, the sliding sleeves can be mutually matched and combined into a combined sliding sleeve through the inner teeth and the outer teeth, the combined sliding sleeve or the selected sliding sleeve can be matched with the inner teeth holes of the inner teeth sleeve, the inner teeth holes can freely pass through nuts of matched direct-connection ferrule type joints or hexagons of products with smaller hexagons in the joint bodies and can limit free rotation of the hexagons, when the combined sliding sleeve or a selected sliding sleeve and the inner tooth sleeve are assembled together, the radial thread through hole on the inner tooth sleeve is concentric with the radial smooth through hole on the sliding sleeve at a certain matching position;
the fastening screw is matched with the inner thread of the radial thread through hole on the inner tooth sleeve and can penetrate through the radial smooth through hole on the sliding sleeve.
Preferably, the internal teeth of the internally toothed sleeve have 18 or 24 teeth.
Preferably, the internal toothed sleeve can be produced by sintering or drawing.
Preferably, the number of teeth in the sliding sleeve is 18 or 24.
Preferably, the sliding sleeve can be produced by sintering.
Preferably, the thickness of the sliding sleeve is about 4 mm.
Preferably, the fastening screw is a socket head type fastening screw.
When the installation of the cutting ferrule type joint is completed, the outer hexagon of the nut of the cutting ferrule type joint is rigidly connected with the outer hexagon of the joint body through the inner tooth sleeve or the combination of the inner tooth sleeve and the plurality of sliding sleeves, and the nut is fixed by the fastening screw, so that the loosening condition of the nut is prevented.
(III) advantageous effects
The invention has the beneficial effects that: the outer hexagon of the nut of the ferrule type joint is rigidly connected with the outer hexagon of the joint body, so that the nut is prevented from rotating, and potential safety hazards caused by loosening of the nut are eliminated. The mechanism is convenient to disassemble and assemble, simple to manufacture and easy to combine.
Drawings
Fig. 1 shows a mechanism installation mode 1 of the present invention, which illustrates a case where a nut 4 hexagon and a joint body 5 hexagon in a straight-through ferrule type joint are the same;
FIG. 2 is a schematic sectional view taken along line A-A of FIG. 1, illustrating the hexagonal fit of the internally toothed sleeve 1 to the nut 4;
fig. 3 is a schematic sectional view B-B of fig. 1, illustrating the hexagonal fitting of the internally toothed sleeve 1 to the coupling body 5;
FIG. 4 shows a mechanism mounting manner 2 of the present invention, which illustrates a case where a nut 4 has a larger hexagonal shape than a joint body 5 in a straight-through ferrule type joint;
FIG. 5 is a schematic cross-sectional view taken along line C-C of FIG. 4, illustrating the hexagonal fit of the internally toothed sleeve 1 to the nut 4;
fig. 6 is a schematic cross-sectional view taken along line D-D of fig. 4, illustrating the hexagonal fitting of the internally toothed sleeve 1, the sliding sleeve 2 and the joint body 5;
FIG. 7 is a mechanism mounting manner 3 of the present invention, which illustrates a case where a nut 4 has a smaller hexagonal shape than a joint body 5 in a straight-through ferrule type joint;
fig. 8 is a schematic sectional view taken along line E-E of fig. 7, illustrating hexagonal fitting of the internally toothed sleeve 1, the sliding sleeve 2 and the nut 4;
fig. 9 is a schematic sectional view taken along line F-F of fig. 7, illustrating the hexagonal fitting of the internally toothed sleeve 1 to the coupling body 5;
fig. 10 illustrates a case where one internal gear sleeve 1 is combined with two sliding sleeves 2;
FIG. 11 is a front view schematic of an internally toothed sleeve;
FIG. 12 is a left side schematic view of an internally toothed sleeve;
FIG. 13 is a left side view illustration of the sliding sleeve;
FIG. 14 is a schematic view of a fastening screw;
the reference numerals are explained below:
1 internal tooth sleeve, 2 sliding sleeves, 3 fastening screws, 4 nuts, 5 joint bodies and 6 ferrule tubes
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described with reference to the following embodiments.
Referring to fig. 1, a mechanism installation mode 1 of the invention illustrates a situation that a nut 4 hexagon and a joint body 5 hexagon in a through ferrule type joint are the same, at this time, only an internal tooth sleeve 1 and a fastening screw 3 in the invention need to be selected, the internal tooth sleeve 1 is firstly sleeved on a ferrule 6, the fastening nut 4 is installed to a moment excitation point and then is fastened for 1/6 circles, the internal tooth sleeve 1 penetrates through the nut 4 hexagon and then is continuously screwed with the nut 4 in a micro-motion manner until the front end of the internal tooth sleeve 1 penetrates into the hexagon of the joint body 5, then the fastening screw 3 is installed on the internal tooth sleeve 1 for fastening, rigid connection of the nut 4 and the joint body 5 is realized, looseness of the nut 4 in a use process is prevented, and the cross-sectional view of a fastening position in fig. 2 and fig. 3 is shown.
Referring to fig. 4, the mechanism installation mode 2 of the invention shows the situation that the hexagon of the nut 4 in the through ferrule type joint is larger than the hexagon of the joint body 5, in this case, the internally toothed sleeve 1 is fitted over the bayonet sleeve 6 beforehand, the corresponding sliding sleeve 2 is placed between the nut 4 and the socket body 5 in advance, the nut 4 is screwed to the moment-increasing point and 1/6 turns are then screwed, the sliding sleeve 2 is penetrated to one side of the hexagon of the joint body 5, the internal tooth sleeve 1 is penetrated through the hexagon of the nut 4 to be contacted with the sliding sleeve 2, then the angle of the tooth-shaped matching phase difference is observed, then the internal tooth sleeve 1 is retracted, then, the nut 4 is continuously screwed up by micro-motion until the front end of the internal tooth sleeve 1 passes through the external teeth of the sliding sleeve 2, then, the internal gear sleeve 1 is fastened by fastening the fastening screw 3, and the nut 4 and the joint body 5 are rigidly connected to each other, thereby preventing the nut 4 from loosening during use. See fig. 5 and 6 for a cross-sectional view of the fastening position.
Referring to fig. 7, a mechanism installation mode 3 of the invention shows a situation that a nut 4 hexagonal in a through ferrule type joint is smaller than a joint body 5 hexagonal, in this situation, an internal tooth sleeve 1 and a sliding sleeve 2 are sleeved on a ferrule 6 in advance, after the nut 4 is screwed to a moment excitation point and is further screwed for 1/6 circles, the sliding sleeve 2 is firstly fixed on the left side of the internal tooth sleeve 1, then the sliding sleeve 2 penetrates through the nut 4 hexagonal, the right side of the internal tooth sleeve is attached to the joint body hexagonal, an angle of tooth form fit difference is observed, the sliding sleeve 2 and the internal tooth sleeve 1 are retreated, then the nut 4 is screwed in a micro-motion mode continuously until the right end of the internal tooth sleeve 1 enters the hexagonal of the joint body 5, and then a fastening screw 3 is installed for fastening, the nut 4 is rigidly connected with the joint body 5, so that the nut 4 is prevented from loosening in a use process. See fig. 8 and 9 for a cross-sectional view of the fastening position.
The specific working principle is as follows: a characteristic of the installation of the ferrule-type fitting is that the final tightening must be performed manually, and when tightening the nut 4 to the torque excitation point, the tightening of the nut 1/6 to 1/4 turns must be continued, i.e., the final tightening of the nut 4 has a tolerance of 30 degrees. And the internal teeth of the sleeve 1 and the sliding sleeve 2 are at angles of 20 degrees and 15 degrees with respect to each other, depending on the number of teeth 18 or 24. Therefore, when the internal teeth at one ends of the internal-tooth sleeve 1 and the sliding sleeve 2 are matched with the hexagonal teeth of the nut 4, the nut 4 is screwed, and the internal teeth at the other ends of the internal-tooth sleeve 1 and the sliding sleeve 2 are matched with the hexagonal teeth of the joint body 5 within the range of 30 degrees of the continuous screwing tolerance of the nut 4.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiments should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various improvements and modifications can be made without departing from the spirit and scope of the invention, and these improvements and modifications should also be construed as within the scope of the invention.
Claims (7)
1. The utility model provides a locking mechanism that straight-through cutting ferrule formula connects, includes an internal tooth sleeve, a plurality of sliding sleeve and two fastening screw, its characterized in that:
the outer surface of the internal tooth sleeve is cylindrical, two radial thread through holes are formed at positions away from two end faces by a certain distance, an inner hole of the internal tooth sleeve is a through hole, a plurality of internal teeth are uniformly distributed on the hole wall, the included angle of the outer surface of the internal teeth is 120 degrees, the hexagonal of a nut or a product with a larger hexagonal in a matched through ferrule type joint can axially and freely penetrate through the inner hole of the internal tooth sleeve but cannot freely rotate in the hole, and the number of teeth of the inner hole of the internal tooth sleeve is integral multiple of 6;
when the number of the sliding sleeves is more than one, the sliding sleeves can be mutually matched and combined into a combined sliding sleeve through the inner teeth and the outer teeth, the combined sliding sleeve or the selected sliding sleeve can be matched with the inner teeth holes of the inner teeth sleeve, the inner teeth holes can freely pass through nuts of matched direct-connection ferrule type joints or hexagons of products with smaller hexagons in the joint bodies and can limit free rotation of the hexagons, when the combined sliding sleeve or a selected sliding sleeve and the inner tooth sleeve are assembled together, the radial thread through hole on the inner tooth sleeve is concentric with the radial smooth through hole on the sliding sleeve at a certain matching position;
the fastening screw is matched with the inner thread of the radial thread through hole on the inner tooth sleeve and can penetrate through the radial smooth through hole on the sliding sleeve.
2. The anti-loosening mechanism for the ferrule-type fitting according to claim 1, wherein: the internal teeth of the internal tooth sleeve are 18 or 24 teeth.
3. The anti-loosening mechanism for the ferrule-type fitting according to claim 1, wherein: the internally toothed sleeve may be produced by sintering or drawing.
4. The anti-loosening mechanism for the ferrule-type fitting according to claim 1, wherein: the number of teeth in the sliding sleeve is 18 or 24.
5. The anti-loosening mechanism for the ferrule-type fitting according to claim 1, wherein: the sliding sleeve may be produced by sintering.
6. The anti-loosening mechanism for the ferrule-type fitting according to claim 1, wherein: the thickness of the sliding sleeve is about 4 mm.
7. The anti-loosening mechanism for the ferrule-type fitting according to claim 1, wherein: the fastening screw is a hexagon socket type fastening screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010438203.4A CN111456995A (en) | 2020-05-21 | 2020-05-21 | Anti-loosening mechanism of straight-through ferrule type joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010438203.4A CN111456995A (en) | 2020-05-21 | 2020-05-21 | Anti-loosening mechanism of straight-through ferrule type joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111456995A true CN111456995A (en) | 2020-07-28 |
Family
ID=71677161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010438203.4A Pending CN111456995A (en) | 2020-05-21 | 2020-05-21 | Anti-loosening mechanism of straight-through ferrule type joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111456995A (en) |
-
2020
- 2020-05-21 CN CN202010438203.4A patent/CN111456995A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3126096B1 (en) | Interface device for tensioning a nut and a bolt assembly | |
| US9802297B2 (en) | Tightening tool for a screw element having a line, and coupling part and screw element | |
| US20070164566A1 (en) | Lockwireless coupling assembly | |
| JPH01503400A (en) | Fixing devices and tools for fixing the devices | |
| EP4123189A1 (en) | Anti-disassembly joint and anti-disassembly joint assembly | |
| KR20140044320A (en) | High pressure-resistant screw connection for pipelines or hose lines having a tapered thread | |
| CN111473173A (en) | Soft sealing mechanism of cutting ferrule formula joint | |
| US9169864B2 (en) | Lock ring and threaded stud | |
| CN212225744U (en) | Anti-loosening mechanism of straight-through ferrule type joint | |
| CN111456995A (en) | Anti-loosening mechanism of straight-through ferrule type joint | |
| CN206320157U (en) | The Anti-loosen stop nut radially locked | |
| CN211852455U (en) | Manual quick locking hexagonal flange face nut | |
| FI105288B (en) | Torque screw or nut | |
| CN212251549U (en) | Anti-loosening mechanism of pipe joint | |
| CN110056723A (en) | Locking device and pipeline self-locking connection structure for piping connection | |
| US10344894B2 (en) | Retention and anti-rotation for bulkhead fittings | |
| CN212480416U (en) | Locking mechanism of cutting ferrule formula joint | |
| CN213592734U (en) | Locking sleeve for eliminating reaction force of gasket | |
| CN202733226U (en) | Pipe fitting connector | |
| JPS6056929B2 (en) | Quickly disassembleable shaft coupling with two connecting flanges | |
| CN111442142A (en) | Locking mechanism of cutting ferrule formula joint | |
| CN211737712U (en) | Universal type hydraulic pipe joint anti-loosening clamping sleeve | |
| CN214367148U (en) | Self-locking bolt fastening device | |
| CN220354238U (en) | Connecting device | |
| CN211059229U (en) | Coupler for mechanical structure transmission |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |