CN112128200A - Single-face connecting bolt - Google Patents
Single-face connecting bolt Download PDFInfo
- Publication number
- CN112128200A CN112128200A CN202011106524.0A CN202011106524A CN112128200A CN 112128200 A CN112128200 A CN 112128200A CN 202011106524 A CN202011106524 A CN 202011106524A CN 112128200 A CN112128200 A CN 112128200A
- Authority
- CN
- China
- Prior art keywords
- wrenching
- hole
- self
- bolt
- rod
- 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
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 5
- 210000000078 claw Anatomy 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 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
Images
Classifications
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- 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
- F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
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- 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
- F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
- F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
- F16B23/0023—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool substantially cross-shaped
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- 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
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
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- 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
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/041—Specially-shaped shafts
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- 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
- F16B39/12—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The invention discloses a single-sided connecting bolt which comprises a core rod, a threaded sleeve and a self-locking nut, wherein the core rod comprises a polished rod, one end of the polished rod is provided with a threaded rod, the other end of the polished rod is provided with a bolt head, the other end of the bolt head is provided with a wrenching section, a wrenching groove is arranged between the bolt head and the wrenching section, the end surface of the wrenching section is provided with a wrenching groove, the polished rod, the bolt head and the wrenching section are integrally formed, the polished rod is provided with the threaded sleeve, the head of the threaded sleeve is provided with a countersunk hole matched with the bolt head, the excircle direction of the countersunk hole is provided with a cross groove, the excircle direction of the head of the threaded sleeve is provided with a positioning ring, the self. The invention realizes single-sided connection, solves the problem that a mounting tool cannot be used at a narrow internal space, adopts a self-locking nut locking mode, has a self-locking function, and is beneficial to improving the fatigue life of a connected piece because the bushing extrudes the connected piece.
Description
Technical Field
The invention belongs to the technical field of bolt connection, and particularly relates to a single-side connecting bolt.
Background
The bolt is a cylindrical threaded fastener matched with a nut, and the fastener is composed of a head part and a screw rod and needs to be matched with the nut for fastening and connecting two parts with through holes. If the nut is unscrewed from the bolt, the two parts can be separated, so that the bolt connection belongs to detachable connection. The existing bolt is connected by the aid of threads and nuts, but the bolt and the self-locking nut are inconvenient to connect due to the fact that the bolt is located in a narrow space in the aerospace field, and although the self-locking nut can be connected by the aid of the self-locking rivet on the surface, the requirement on structural connection strength is high, and the self-locking rivet cannot effectively meet the requirement. Therefore, it is urgently required to develop a bolt for connection in a narrow space.
Disclosure of Invention
To solve the above problems, an object of the present invention is to provide a single-sided connecting bolt.
The single-face connecting bolt comprises a core rod, a threaded sleeve and a self-locking nut, wherein the core rod comprises a polished rod, a threaded rod is arranged at one end of the polished rod, a bolt head is arranged at the other end of the polished rod, a wrenching section is arranged at the other end of the bolt head, a wrenching groove is formed between the bolt head and the wrenching section, the wrenching groove is formed in the end face of the wrenching section, the polished rod, the bolt head and the wrenching section are integrally formed, the polished rod is provided with the threaded sleeve, the head of the threaded sleeve is provided with a counter bore matched with the bolt head, a cross groove is formed in the excircle direction of the counter bore, a positioning ring is arranged in the excircle direction of the head of the threaded sleeve, the self.
Furthermore, a first through hole and a second through hole are formed in the bushing, the inner diameter of the first through hole is larger than that of the second through hole, and the inner diameter of the second through hole is larger than the major diameter of the thread of the threaded rod.
Furthermore, an embedding sleeve is arranged in the first through hole, and the inner diameter of the embedding sleeve is consistent with that of the second through hole.
Furthermore, the first through hole is arranged at one end close to the threaded sleeve.
Furthermore, the tail part of the screw sleeve is conical.
Compared with the prior art, the single-sided connecting bolt has the beneficial effects that: the invention realizes single-sided connection, solves the problem that an installation tool cannot be used at a narrow internal space, adopts a self-locking nut locking mode, has a self-locking function, extrudes a connected piece by the bushing, is beneficial to improving the fatigue life of the connected piece, replaces the traditional bolt link, has the same function and performance of the traditional bolt, and improves the installation efficiency.
Drawings
FIG. 1 is a schematic view of a single-sided connecting bolt of the present invention;
FIG. 2 is a schematic structural view of a single-sided connecting bolt core bar of the present invention;
FIG. 3 is a schematic view of a single-sided connecting bolt insert of the present invention;
FIG. 4 is a schematic view of the construction of a single-sided connecting bolt bushing of the present invention;
FIG. 5 is a view showing a state of use of the single-sided connecting bolt of the present invention;
fig. 6 is a schematic structural diagram of the special tool.
Shown in the figure, 1-core rod, 2-thread sleeve, 3-self-locking nut, 4-polish rod, 5-threaded rod, 6-bolt head, 7-wrenching segment, 8-wrenching groove, 9-wrenching groove, 10-countersunk hole, 11-cross groove, 12-positioning ring, 13-lining, 14-first through hole, 15-second through hole, 16-embedding sleeve, 17-special tool, 18-inserted rod and 19-fixed claw.
Detailed Description
The principles and features of this invention are described below in conjunction with examples, which are set forth to illustrate, but are not to be construed to limit the scope of the invention.
As shown in fig. 1 to 6, a single-sided connecting bolt includes a core rod 1, a threaded sleeve 2 and a self-locking nut 3, the core rod 1 includes a polished rod 4, one end of the polished rod 4 is provided with a threaded rod 5, the other end of the polished rod 4 is provided with a bolt head 6, the other end of the bolt head 6 is provided with a wrenching section 7, a wrenching groove 8 is arranged between the bolt head 6 and the wrenching section 7, the end surface of the wrenching section 7 is provided with a wrenching groove 9, the polished rod 4, the bolt head 6 and the wrenching section 7 are integrally formed, the polished rod 4 is provided with the threaded sleeve 2, the head of the threaded sleeve 2 is provided with a countersunk hole 10 matched with the bolt head 6, the countersunk hole 10 is provided with a cross groove 11 in the excircle direction, the head of the threaded sleeve 2 is provided with a positioning ring 12 in the excircle direction, the self-locking nut.
Furthermore, a first through hole 14 and a second through hole 15 are formed in the bushing 13, the inner diameter of the first through hole 14 is larger than that of the second through hole 15, and the inner diameter of the second through hole 15 is larger than the major diameter of the thread of the threaded rod 5.
Furthermore, an embedding sleeve 16 is arranged in the first through hole 14, and the inner diameter of the embedding sleeve 16 is consistent with that of the second through hole 15.
For the purpose of deformation, the first through hole 14 is provided next to one end of the thread insert 2.
Further, the tail part of the screw sleeve 2 is conical.
The invention is realized by the following modes: when the self-locking bolt is used, a mounting hole is drilled at a place needing to be used, then a single-face connecting bolt is inserted into the mounting hole, the special tool 17 is adopted to be fixed on a riveter, then four fixing claws 19 of the special tool 17 are inserted into the cross groove 11, under the combined action of the positioning ring 12 and the special tool 17, the screw sleeve 2 is fixed, then the insertion rod 18 of the special tool 17 is inserted into the wrenching groove 9, the wrenching section 7 is rotated to enable the polish rod 4 to rotate, meanwhile, the threaded rod 5 rotates and turns into the self-locking nut 3, the self-locking nut 3 compresses the lining 13 and the embedding sleeve 16 until the deformation of the lining 13 and the embedding sleeve 16 reaches the limit, at the moment, all torsion is applied to the wrenching groove 8, the wrenching section 7 is broken from the wrenching groove 8, and the installation is finished.
The invention realizes single-sided connection, solves the problem that an installation tool cannot be used at a narrow internal space, adopts a self-locking nut locking mode, has a self-locking function, extrudes a connected piece by the bushing, is beneficial to improving the fatigue life of the connected piece, replaces the traditional bolt link, has the same function and performance of the traditional bolt, and improves the installation efficiency.
The scope of the present invention is not limited to the technical solutions disclosed in the embodiments, and any modifications, equivalent substitutions, improvements, etc. made to the above embodiments according to the technical spirit of the present invention fall within the scope of the present invention.
Claims (5)
1. A single-sided connecting bolt characterized by: the self-locking nut comprises a core rod, a threaded sleeve and a self-locking nut, wherein the core rod comprises a polished rod, one end of the polished rod is provided with a threaded rod, the other end of the polished rod is provided with a bolt head, the other end of the bolt head is provided with a wrenching section, a wrenching groove is formed between the bolt head and the wrenching section, a wrenching groove is formed in the end face of the wrenching section, the polished rod is provided with the threaded sleeve, the head of the threaded sleeve is provided with a countersunk hole matched with the bolt head, a cross groove is formed in the excircle direction of the countersunk hole, a positioning ring is arranged in the excircle direction of the head of the threaded sleeve, the self.
2. The single-sided connecting bolt of claim 1, wherein: a first through hole and a second through hole are formed in the bushing, the inner diameter of the first through hole is larger than that of the second through hole, and the inner diameter of the second through hole is larger than that of the thread of the threaded rod.
3. The single-sided connecting bolt of claim 2, wherein: an embedding sleeve is arranged in the first through hole, and the inner diameter of the embedding sleeve is consistent with that of the second through hole.
4. The single-sided connecting bolt of claim 2, wherein: the first through hole is arranged at one end close to the threaded sleeve.
5. The single-sided connecting bolt of claim 1, wherein: the tail part of the screw sleeve is conical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011106524.0A CN112128200A (en) | 2020-10-16 | 2020-10-16 | Single-face connecting bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011106524.0A CN112128200A (en) | 2020-10-16 | 2020-10-16 | Single-face connecting bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112128200A true CN112128200A (en) | 2020-12-25 |
Family
ID=73853667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011106524.0A Pending CN112128200A (en) | 2020-10-16 | 2020-10-16 | Single-face connecting bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112128200A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113586590A (en) * | 2021-08-02 | 2021-11-02 | 航天精工股份有限公司 | High-locking anti-crack mandrel and closing method thereof |
-
2020
- 2020-10-16 CN CN202011106524.0A patent/CN112128200A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113586590A (en) * | 2021-08-02 | 2021-11-02 | 航天精工股份有限公司 | High-locking anti-crack mandrel and closing method thereof |
| CN113586590B (en) * | 2021-08-02 | 2023-04-25 | 航天精工股份有限公司 | High-locking crack-preventing mandrel and closing method thereof |
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