CN212838901U - Screw thread anti-loosening device - Google Patents
Screw thread anti-loosening device Download PDFInfo
- Publication number
- CN212838901U CN212838901U CN202021847491.0U CN202021847491U CN212838901U CN 212838901 U CN212838901 U CN 212838901U CN 202021847491 U CN202021847491 U CN 202021847491U CN 212838901 U CN212838901 U CN 212838901U
- Authority
- CN
- China
- Prior art keywords
- loosening
- thread
- section
- sleeve
- screw
- 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.)
- Active
Links
Images
Landscapes
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The utility model provides a thread anti-loosening device, which comprises an anti-loosening sleeve, an anti-loosening piece and an anti-loosening rod section arranged at the tail end of a screw rod; the locking sleeve is provided with a first thread section and a second thread section, the first thread section is arranged on the locking rod section, the second thread section is opposite to the first thread section on the screw, the inside of the locking sleeve is sequentially provided with a smooth hole section and an internal thread section, the thread turning direction of the internal thread section is matched with that of the second thread section, and the opening end of the locking sleeve is propped against a fastening nut on the screw through the matching of the internal thread section and the locking rod section; the anti-loosening piece is detachably arranged on the anti-loosening sleeve, and the end part of the anti-loosening piece is inserted into the thread groove of the first thread. Because the screwing directions of the first thread and the second thread are opposite, and the anti-loosening element is inserted into the thread groove of the first thread, when the anti-loosening element is not disassembled, the direction for unscrewing the anti-loosening sleeve is just the screwing direction of the anti-loosening element along the screwing direction of the first thread; because the anti-loosening piece is fixedly arranged on the anti-loosening sleeve, the rotation of the anti-loosening sleeve is limited, and the anti-loosening effect is realized.
Description
Technical Field
The utility model relates to a locking technical field of screw thread, concretely relates to screw thread locking device.
Background
Threaded connection is a widely used detachable fixed connection, but receiving external force, vibrations under the effect condition, threaded connection appears becoming flexible easily, then influences the normal work of equipment, will lead to the spare part of equipment to drop under the severe condition, causes the incident.
In the tower crane field, the tower crane belongs to the indispensable special equipment on the building site, and it is different from other mechanical equipment. Once the fastening bolt and the fastening nut of the standard knot are loosened, the fastening bolt and the fastening nut fall, and a serious accident that the tower crane overturns to cause cluster death and group injury is caused occurs, so that the looseness prevention of the threaded connection is very important for the tower crane.
In view of the above, there is a need for a thread locking device to solve the problems in the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a screw thread locking device, concrete technical scheme is as follows:
a thread anti-loosening device comprises an anti-loosening sleeve, an anti-loosening piece and an anti-loosening rod section arranged at the tail end of a screw rod; the locking sleeve is provided with a first thread section and a second thread section, the first thread section is arranged on the locking rod section, the second thread section is opposite to the first thread section on the screw, the inside of the locking sleeve is sequentially provided with a smooth hole section and an internal thread section, the thread turning direction of the internal thread section is matched with that of the second thread section, and the opening end of the locking sleeve is propped against a fastening nut on the screw through the matching of the internal thread section and the locking rod section; the anti-loosening piece is detachably arranged on the anti-loosening sleeve, and the end part of the anti-loosening piece is inserted into the thread groove of the first thread.
Preferably, in the above technical solution, the inner diameter of the unthreaded hole section is larger than the inner diameter of the internal thread section; the outer diameter of the anti-loosening rod section is smaller than that of the screw.
Preferably among the above technical scheme, the anti-loosening member is a screw, the unthreaded hole section is correspondingly provided with a threaded hole, and the screw penetrates through the threaded hole and the end of the screw is inserted into a thread groove of the first thread.
Preferably, in the above technical solution, the number of the anti-loosening members is at least two, and the anti-loosening members are symmetrically arranged on the anti-loosening sleeve.
Preferably among the above technical scheme, still be equipped with the oil storage chamber on the locking sleeve, the oil storage chamber sets up in the one end of keeping away from the unthreaded hole section.
Preferably, in the above technical solution, the oil storage chamber is filled with semi-fluid grease.
Use the technical scheme of the utility model, following beneficial effect has:
(1) the utility model discloses a screw thread anti-loosening device comprises an anti-loosening sleeve, an anti-loosening piece and an anti-loosening rod section, wherein the screw thread turning directions of the anti-loosening rod section and a screw are opposite, the anti-loosening sleeve is fastened with the anti-loosening rod section through an internal thread section, the anti-loosening piece is detachably arranged at a unthreaded hole section of the anti-loosening sleeve, and the end part of the anti-loosening piece is inserted into a thread groove of a first thread; because the screwing directions of the first thread and the second thread are opposite, and the anti-loosening element is inserted into the thread groove of the first thread, when the anti-loosening element is not disassembled, the direction for unscrewing the anti-loosening sleeve is just the screwing direction of the anti-loosening element along the screwing direction of the first thread; the anti-loosening piece is fixedly arranged on the anti-loosening sleeve, so that the rotation of the anti-loosening sleeve is limited, and the anti-loosening effect is realized; the utility model discloses a locking device simple structure, ingenious, the cost is with low costs.
(2) The screw thread anti-loosening device of the utility model is also provided with an oil storage cavity on the anti-loosening sleeve, the oil storage cavity is filled with semi-fluid lubricating grease, and the internal thread section, the anti-loosening rod section, the screw and the fastening nut can be lubricated and rustproof through the oil storage cavity; the anti-loose sleeve is sleeved on the screw rod to play a role in rain prevention and dust prevention; therefore, the anti-loosening device of the utility model integrates the functions of anti-loosening, rain-proof, dust prevention and rust prevention and lubrication, and has simple structure and higher practical value.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
FIG. 1 is a schematic view of the overall structure of the thread anti-loosening device of the present invention;
the anti-loosening device comprises a screw, a screw rod, a locking rod section, a fastening nut, a locking sleeve, a unthreaded hole section, an internal thread section, an oil storage cavity and an anti-loosening piece, wherein the screw rod is 1, the locking rod section is 1.1, the fastening nut is 2, the locking sleeve is 3, the unthreaded hole section is 3.1, the internal thread section is 3.2, and the anti-loosening piece is 4.
Detailed Description
The embodiments of the invention will be described in detail hereinafter with reference to the accompanying drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.
Example 1:
referring to fig. 1, a thread anti-loosening device comprises an anti-loosening sleeve 3, an anti-loosening piece 4 and an anti-loosening rod section 1.1 arranged at the tail end of a screw 1; the locking rod section 1.1 is provided with a second thread, the second thread is opposite to the first thread on the screw rod 1 in rotation direction, the locking sleeve 3 is internally provided with a smooth hole section 3.1 and an internal thread section 3.2 in sequence, the rotation direction of the thread of the internal thread section 3.2 is matched with the second thread, and the open end of the locking sleeve 3 is propped against the fastening nut 2 on the screw rod 1 through the matching of the internal thread section 3.2 and the locking rod section 1.1; the anti-loosening element 4 is detachably arranged on the anti-loosening sleeve 3, and the end part of the anti-loosening element is inserted into the thread groove of the first thread.
The inner diameter of the unthreaded hole section 3.1 is larger than that of the internal thread section 3.2; the outer diameter of the locking rod section 1.1 is smaller than that of the screw rod 1. The unthreaded hole section is used for accommodating the tail end of a screw rod and preventing the anti-loosening sleeve from interfering with the screw rod, and the screw rod is arranged on a bolt.
Preferably, referring to fig. 1, the length of the unthreaded hole section should be greater than the length of the end of the screw rod exposed out of the fastening nut, and the inner diameter of the unthreaded hole section is preferably greater than the outer diameter of the screw rod by 5-20 mm.
The anti-loosening piece 4 is a screw, a threaded hole is correspondingly formed in the unthreaded hole section 3.1, the screw penetrates through the threaded hole and is arranged, and the end of the screw is inserted into a thread groove of the first thread.
The number of the anti-loosening pieces 4 is at least two, and a plurality of anti-loosening pieces 4 are symmetrically arranged on the anti-loosening sleeve 3.
Still be equipped with oil storage chamber 3.3 on locking sleeve 3, oil storage chamber 3.3 sets up in the one end of keeping away from unthreaded hole section 3.1. Preferably, referring to fig. 1, the anti-loose sleeve is a hollow structure with one open end.
Preferably, the oil storage chamber 3.3 is filled with semi-fluid grease.
The technical scheme of the embodiment is specifically as follows:
the anti-loosening sleeve is screwed with the anti-loosening rod section through the internal thread section, the anti-loosening piece (screw) is screwed into the threaded hole of the light hole section, and the end part of the anti-loosening piece is inserted into the thread groove of the first thread, so that anti-loosening can be realized; when the anti-loosening sleeve is disassembled, the anti-loosening piece is disassembled firstly, and then the anti-loosening sleeve is disassembled.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A thread anti-loosening device is characterized by comprising an anti-loosening sleeve (3), an anti-loosening piece (4) and an anti-loosening rod section (1.1) arranged at the tail end of a screw (1); a second thread is arranged on the anti-loosening rod section (1.1), the second thread is opposite to the first thread on the screw rod (1), a smooth hole section (3.1) and an internal thread section (3.2) are sequentially arranged in the anti-loosening sleeve (3), the thread turning direction of the internal thread section (3.2) is matched with the second thread, and the open end of the anti-loosening sleeve (3) is propped against the fastening nut (2) on the screw rod (1) through the matching of the internal thread section (3.2) and the anti-loosening rod section (1.1); the anti-loosening piece (4) is detachably arranged on the anti-loosening sleeve (3) and the end part of the anti-loosening piece is inserted into a thread groove of the first thread.
2. Thread anti-loosening device according to claim 1, characterised in that the inner diameter of the unthreaded bore section (3.1) is greater than the inner diameter of the internal thread section (3.2); the outer diameter of the anti-loosening rod section (1.1) is smaller than that of the screw (1).
3. A thread loosening prevention device according to claim 2, wherein the loosening prevention member (4) is a screw, and the unthreaded section (3.1) is correspondingly provided with a threaded hole, the screw is arranged through the threaded hole, and the end part of the screw is inserted into the thread groove of the first thread.
4. Thread anti-loosening device according to claim 3, characterized in that the number of anti-loosening elements (4) is at least two, and a plurality of anti-loosening elements (4) are symmetrically arranged on the anti-loosening sleeve (3).
5. A thread anti-loosening device according to any one of claims 1 to 4, characterized in that the anti-loosening sleeve (3) is further provided with an oil storage chamber (3.3), and the oil storage chamber (3.3) is arranged at one end far away from the unthreaded hole section (3.1).
6. Thread anti-loosening device according to claim 5, characterised in that the oil reservoir (3.3) is filled with semi-fluid grease.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021847491.0U CN212838901U (en) | 2020-08-27 | 2020-08-27 | Screw thread anti-loosening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021847491.0U CN212838901U (en) | 2020-08-27 | 2020-08-27 | Screw thread anti-loosening device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212838901U true CN212838901U (en) | 2021-03-30 |
Family
ID=75142408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021847491.0U Active CN212838901U (en) | 2020-08-27 | 2020-08-27 | Screw thread anti-loosening device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212838901U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864315A (en) * | 2021-09-26 | 2021-12-31 | 中国航发湖南动力机械研究所 | Thread anti-loosening structure in closed cavity |
-
2020
- 2020-08-27 CN CN202021847491.0U patent/CN212838901U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864315A (en) * | 2021-09-26 | 2021-12-31 | 中国航发湖南动力机械研究所 | Thread anti-loosening structure in closed cavity |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212838901U (en) | Screw thread anti-loosening device | |
| CN110886761A (en) | Screw thread anti-loosening device | |
| CN212131033U (en) | Anti-drop loose's big bolt of axial locking | |
| CN206458698U (en) | A kind of anti-loosening bolt | |
| CN211117063U (en) | Screw thread anti-loosening device | |
| CN205190492U (en) | Bolt | |
| CN214888278U (en) | Thread anti-loosening and waterproof device | |
| CN209705044U (en) | Screw locking nut | |
| CN210715525U (en) | Anti-loose combined fastener with precise structure | |
| CN211820309U (en) | Anti-loosening bolt | |
| CN210660971U (en) | Anti-loosening locking bolt | |
| CN210565677U (en) | Nut pair structure and vehicle | |
| CN219492832U (en) | Hexagonal slotted nut with split pin not easy to loose | |
| CN216044928U (en) | Anti-loose bolt | |
| CN210318125U (en) | Fastening device | |
| CN108591226A (en) | A kind of new mechanical lock curable type nut connection anti-loose structure | |
| CN212584052U (en) | Piston locking nut of hydraulic oil cylinder | |
| CN207454569U (en) | A kind of bearing Anti-loosen stop device | |
| CN207315833U (en) | Latch assembly and there is its compressor | |
| CN217842321U (en) | Screw unscrewing prevention and vehicle | |
| CN217633339U (en) | Bolt with lubricating function | |
| FR2396888A1 (en) | RECESSED ELEMENT WITH ANTIVIBRATION THREAD | |
| CN217874029U (en) | Flange adjustable ball screw | |
| CN219865814U (en) | Locknut with inside limit structure | |
| CN214998771U (en) | Combined bolt capable of preventing loosening |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |