CN110886761A - Screw thread anti-loosening device - Google Patents

Screw thread anti-loosening device Download PDF

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Publication number
CN110886761A
CN110886761A CN201911359739.0A CN201911359739A CN110886761A CN 110886761 A CN110886761 A CN 110886761A CN 201911359739 A CN201911359739 A CN 201911359739A CN 110886761 A CN110886761 A CN 110886761A
Authority
CN
China
Prior art keywords
loosening
thread
screw
fastening screw
sleeve
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
Application number
CN201911359739.0A
Other languages
Chinese (zh)
Inventor
张言华
张熠晖
张剑
彭德华
冯宗保
魏新枫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anshun Zhongan Installation Engineering Co Ltd
Original Assignee
Anshun Zhongan Installation Engineering Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Anshun Zhongan Installation Engineering Co Ltd filed Critical Anshun Zhongan Installation Engineering Co Ltd
Priority to CN201911359739.0A priority Critical patent/CN110886761A/en
Publication of CN110886761A publication Critical patent/CN110886761A/en
Pending legal-status Critical Current

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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
    • F16B39/12—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts
    • 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
    • F16B33/00—Features common to bolt and nut
    • F16B33/004—Sealing; Insulation
    • 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
    • F16B33/00—Features common to bolt and nut
    • F16B33/008—Corrosion preventing means
    • 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
    • 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
    • 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
    • F16B39/16—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts in which the screw-thread of the locknut differs from that of the nut
    • 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
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F16B39/282—Locking by means of special shape of work-engaging surfaces, e.g. notched or toothed nuts

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pivots And Pivotal Connections (AREA)

Abstract

The invention provides a thread anti-loosening device which comprises an anti-loosening sleeve, wherein the anti-loosening sleeve is of a cylindrical structure with an opening and a hollow cavity, internal threads are arranged on the inner wall of the hollow cavity of the anti-loosening sleeve, a fastening screw can be inserted into the cavity of the anti-loosening sleeve from the opening to be detachably connected with the internal threads, and the end face of the opening end of the anti-loosening sleeve is in contact with a fastening nut on the fastening screw, so that the fastening nut is prevented from loosening. And semi-fluid lubricating grease is filled in the hollow cavity of the anti-loosening sleeve. The anti-loosening device integrates the functions of loosening prevention, rain prevention, dust prevention and rust prevention and lubrication, and has a simple structure and higher practical value.

Description

Screw thread anti-loosening device
Technical Field
The invention relates to the technical field of threaded connection, in particular to a thread anti-loosening device.
Background
The threaded connection is a detachable fixed connection which is widely used, and has the advantages of simple structure, reliable connection, convenient assembly and disassembly and the like. But under the external force, the vibrations effect circumstances, 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.
And 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.
Disclosure of Invention
The invention aims to provide a thread anti-loosening device, which has the following specific technical scheme:
the utility model provides a screw thread locking device, includes locking external member, locking external member is for having the opening and having the cylinder structure of cavity, be equipped with the internal thread on the inner wall of the cavity of locking external member, fastening screw can insert from the opening with the detachable connection of internal thread in the cavity of locking external member, and the open end terminal surface of locking external member contacts with the fastening nut on the fastening screw to the realization is locking fastening nut.
Preferably in the above technical scheme, the internal thread is a first internal thread, and the first internal thread is matched with an external thread on the fastening screw.
Preferred among the above technical scheme, still include locking screw, be equipped with on the locking external member with locking screw assorted screw hole, be equipped with limit structure on the fastening screw, locking screw runs through the tip that screw hole setting and locking screw inserted realize preventing among the limit structure that locking external member is rotatory.
Preferably, in the above technical solution, a threaded hole is formed in a circumferential side surface of the anti-loosening kit;
the tail end of the fastening screw rod is provided with a first shaft section, and the limiting structure is arranged on the circumferential side face of the first shaft section and corresponds to the threaded hole.
Preferably among the above technical scheme, locking screw is two at least for the equipartition, locking screw, screw hole and limit structure one-to-one set up.
Preferably, in the above technical solution, a threaded hole is formed in a closed end of the anti-loosening sleeve opposite to the open end;
the limiting structure is arranged on the end face of the tail end of the fastening screw and corresponds to the threaded hole.
Preferably in the above technical scheme, the number of the locking screws is at least two, and the locking screws, the threaded holes and the limiting structures are arranged in a one-to-one correspondence manner.
Preferably, in the above technical solution, the limiting structure is a toothed groove.
Preferably in the above technical scheme, the internal thread is a second internal thread, the end of the fastening screw is provided with a second thread shaft section matched with the second internal thread, the thread rotating direction of the second thread shaft section is opposite to the thread rotating direction of the fastening screw, and the locking sleeve member is detachably connected with the fastening screw through the matching of the second internal thread and the second thread shaft section.
Preferably, in the above technical solution, the hollow cavity of the anti-loosening kit is filled with semi-fluid grease.
The technical scheme of the invention has the following beneficial effects:
(1) the thread anti-loosening device comprises an anti-loosening sleeve, wherein one end of the anti-loosening sleeve is an open end, the other end of the anti-loosening sleeve is a closed end, and the closed end can play a role in preventing rain and dust for the anti-loosening device, the fastening screw and the fastening nut, so that the service life of a fastening piece is prolonged; the anti-loosening sleeve is arranged on the fastening screw through the internal thread, the end face of the opening end of the anti-loosening sleeve is in contact with the fastening nut, namely the anti-loosening sleeve props against the fastening nut, and the anti-loosening purpose is achieved.
(2) The screw thread anti-loosening device is also provided with an anti-loosening screw, the fastening screw is provided with a limiting structure, and the anti-loosening screw is screwed into a threaded hole in the anti-loosening external member and then inserted into the limiting structure, so that the anti-loosening external member can be limited from rotating, the fastening nut can be limited from moving on the fastening screw, and the anti-loosening purpose is achieved.
(3) According to the thread anti-loosening device, the second thread shaft section is arranged at the tail end of the fastening screw, the thread rotating direction of the second thread shaft section is opposite to the thread rotating direction of the fastening screw, the second internal thread is arranged in the anti-loosening sleeve, and the second internal thread is matched with the second thread shaft section, so that the loosening rotating direction of the fastening nut on the fastening screw is the tightening rotating direction of the anti-loosening sleeve on the fastening screw, and the purpose of preventing loosening can be effectively achieved by the arrangement of the thread anti-loosening device.
(4) The thread anti-loosening device disclosed by the invention is filled with semi-fluid lubricating grease in the hollow cavity of the anti-loosening sleeve, and can lubricate and prevent rust for the anti-loosening sleeve, the anti-loosening screw, the fastening nut and the fastening screw, so that the anti-loosening device disclosed by the invention integrates the functions of anti-loosening, rain-proof, dust-proof and rust-proof lubrication, and is simple in structure and high in practical value.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present invention;
FIG. 2 is a schematic structural view of the anti-loosening kit of FIG. 1;
FIG. 3 is a schematic view of the overall structure of embodiment 2 of the present invention;
FIG. 4 is a schematic view of the overall structure of embodiment 3 of the present invention;
the anti-loosening device comprises a fastening screw rod 1, a fastening screw rod 1.1, a first shaft section 1.2, a tooth-shaped groove 1.3, a second threaded shaft section 2, a fastening nut 3, a loosening-preventing sleeve 3.1, a threaded hole 3.2, a first internal thread 3.3, a second internal thread 3.4, a smooth hole section 4, a loosening-preventing screw rod 5 and semi-fluid lubricating grease.
Detailed Description
Embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.
Example 1:
referring to fig. 1-2, a screw thread anti-loosening device includes an anti-loosening kit 3, the anti-loosening kit 3 is a cylinder structure with an opening and a hollow cavity, an internal thread is provided on the inner wall of the hollow cavity of the anti-loosening kit 3, a fastening screw 1 can be inserted into the cavity of the anti-loosening kit 3 from the opening to be detachably connected with the internal thread, and the end face of the opening end of the anti-loosening kit 3 contacts with a fastening nut 2 on the fastening screw 1, so as to realize anti-loosening of the fastening nut 2.
The internal thread is first internal thread 3.2, first internal thread 3.2 and fastening screw 1's external thread phase-match. As will be understood by those skilled in the art, after the fastening nut 2 is fastened to the fastening screw 1, a part of the fastening screw is exposed, typically 3-5 threads are exposed, and the exposed part of the fastening screw is the end of the fastening screw.
The screw thread locking device still includes locking screw 4, be equipped with on locking external member 3 with locking screw 4 assorted screw hole 3.1, be equipped with limit structure on the fastening screw 1, locking screw 4 runs through screw hole 3.1 sets up and locking screw 4's tip inserts realize preventing among the limit structure that locking external member 3 is rotatory.
Furthermore, the tail end of the fastening screw rod 1 is provided with a first shaft section 1.1, the diameter of the first shaft section is smaller than that of the fastening screw rod 1, the circumferential side face of the first shaft section 1.1 is provided with a limiting structure, and the circumferential side face of the anti-loosening sleeve piece 3 is provided with a threaded hole 3.1.
Preferably, the hollow cavity of the anti-loose sleeve 3 is filled with semi-fluid grease 5.
Preferably, the number of the anti-loosening screws 4 is at least two, and the anti-loosening screws 4, the threaded holes 3.1 and the limiting structures are arranged in a one-to-one correspondence manner. The anti-loosening screw is a pointed bolt.
Preferably, limit structure is flute profile 1.2, the flute profile can the equipartition set up in the circumference side of first shaft part, of course also can carry out the correspondence setting according to locking screw's quantity. Besides, the limiting structure can also be a groove.
The working principle of the anti-loosening device of the embodiment is as follows: the anti-loosening screw 4 is screwed into a threaded hole in the anti-loosening sleeve, and the end part of the anti-loosening screw can be inserted into the tooth-shaped groove at the same time, so that the anti-loosening sleeve can be limited to rotate around the fastening screw, and the anti-loosening of the fastening nut is realized; semi-fluid lubricating grease is filled in the cavity of the anti-loosening sleeve, so that the anti-loosening sleeve, the anti-loosening screw, the fastening nut and the fastening screw can be lubricated and rustproof; because the anti-loosening sleeve is sleeved on the fastening screw rod, and one end of the anti-loosening sleeve is a closed end, the device, the fastening screw rod and the fastening nut can be prevented from being corroded by rainwater and dust.
Example 2:
referring to fig. 3, the present embodiment is different from embodiment 1 in that: a threaded hole 3.1 is formed in the closed end, opposite to the open end, of the anti-loosening sleeve 3; the limiting structure is arranged on the end face of the tail end of the fastening screw rod 1 and corresponds to the threaded hole 3.1.
Preferably, the number of the locking screws 4 is at least two, the locking screws 4, the threaded holes 3.1 and the limiting structures are arranged in a one-to-one correspondence manner, and the locking screws are tip bolts. (if the number of the anti-loosening screws is only one, the aim of preventing loosening can be achieved by ensuring that the axes of the anti-loosening screws are not overlapped with the axes of the fastening screws).
Preferably, limit structure is tooth-shaped groove 1.2, tooth-shaped groove can the equipartition set up on fastening screw's terminal surface, also can carry out the correspondence setting according to locking screw's quantity certainly. Besides, the limiting structure can also be a groove.
The working principle of the anti-loosening device of the embodiment is as follows: the locking screw is inserted into the tooth-shaped groove at the end part of the fastening screw through the threaded hole on the locking sleeve, and the number of the locking screws is at least two, so that the rotating center of the locking screw is not overlapped with the rotating center of the fastening nut, and the locking screw needs to be loosened when the fastening nut is required to be rotated under the condition, so that the locking device of the embodiment can achieve the purpose of locking.
Semi-fluid lubricating grease is filled in the cavity of the anti-loosening sleeve, so that the anti-loosening sleeve, the anti-loosening screw, the fastening nut and the fastening screw can be lubricated and rustproof; because the anti-loosening sleeve is sleeved on the fastening screw rod, and one end of the anti-loosening sleeve is a closed end, the device, the fastening screw rod and the fastening nut can be prevented from being corroded by rainwater and dust.
Example 3:
referring to fig. 4, the screw locking device includes a locking kit 3, the locking kit 3 is a cylinder structure having an opening and a hollow cavity, an internal thread is provided on the inner wall of the hollow cavity of the locking kit 3, the fastening screw 1 can be inserted into the cavity of the locking kit 3 from the opening to be detachably connected with the internal thread, and the end surface of the opening end of the locking kit 3 contacts with the fastening nut 2 on the fastening screw 1, so as to lock the fastening nut 2.
Preferably, the internal thread is a second internal thread 3.3. As will be understood by those skilled in the art, after the fastening nut 2 is fastened to the fastening screw 1, a part of the fastening screw is exposed, typically 3-5 threads are exposed, and the exposed part of the fastening screw is the end of the fastening screw.
The tail end of the fastening screw rod 1 is provided with a second threaded shaft section 1.3 matched with the second internal thread 3.3, the thread rotating direction of the second threaded shaft section 1.3 is opposite to that of the fastening screw rod 1, and the locking sleeve 3 is detachably connected with the fastening screw rod 1 through the matching of the second internal thread 3.3 and the second threaded shaft section 1.3.
Preferably, in the present embodiment, the diameter of the second threaded shaft section 1.3 is smaller than the diameter of the fastening screw 1, the anti-loose sleeve 3 is sequentially provided with a unthreaded hole section 3.4 and a second internal thread 3.3 from the open end to the inside of the cavity, and the unthreaded hole section 3.4 is used for accommodating the end of the fastening screw 1 (as will be understood by those skilled in the art, the unthreaded hole section is provided to prevent the end of the fastening screw from interfering with the anti-loose sleeve).
Preferably, the hollow cavity of the anti-loose sleeve 3 is filled with semi-fluid grease 5.
The working principle of the embodiment is as follows: the anti-loosening sleeve is screwed up and arranged on the fastening screw rod through the second internal threads and the second threaded shaft section, the end face of the opening end of the anti-loosening sleeve is in contact with the fastening nut, and the fastening nut is propped against the fastening nut.
Semi-fluid lubricating grease is filled in the cavity of the anti-loosening sleeve, so that the anti-loosening sleeve, the anti-loosening screw, the fastening nut and the fastening screw can be lubricated and rustproof; because the anti-loosening sleeve is sleeved on the fastening screw rod, and one end of the anti-loosening sleeve is a closed end, the device, the fastening screw rod and the fastening nut can be prevented from being corroded by rainwater and dust.
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 (10)

1. The utility model provides a screw thread locking device, its characterized in that, includes locking external member (3), locking external member (3) is for having the opening and have the cylinder structure of cavity, be equipped with the internal thread on the inner wall of the cavity of locking external member (3), fastening screw (1) can insert from the opening with the detachable connection of internal thread in the cavity of locking external member (3), and fastening nut (2) on the open end terminal surface of locking external member (3) and fastening screw (1) contact to the realization is carried out locking to fastening nut (2).
2. Thread anti-loosening device according to claim 1, characterised in that the internal thread is a first internal thread (3.2), the first internal thread (3.2) matching an external thread on the tightening screw (1).
3. The thread anti-loosening device according to claim 2, further comprising an anti-loosening screw (4), wherein a threaded hole (3.1) matched with the anti-loosening screw (4) is formed in the anti-loosening sleeve (3), a limiting structure is arranged on the fastening screw (1), the anti-loosening screw (4) penetrates through the threaded hole (3.1) and the end of the anti-loosening screw (4) is inserted into the limiting structure to prevent the anti-loosening sleeve (3) from rotating.
4. A threaded anti-loosening device according to claim 3, characterized in that a threaded hole (3.1) is provided on the circumferential side of the anti-loosening sleeve (3);
the tail end of the fastening screw rod (1) is provided with a first shaft section (1.1), and the limiting structure is arranged on the circumferential side face of the first shaft section (1.1) and corresponds to the threaded hole (3.1).
5. The thread anti-loosening device according to claim 4, wherein the number of the anti-loosening screws (4) is at least two, and the anti-loosening screws (4), the threaded holes (3.1) and the limiting structures are arranged in a one-to-one correspondence manner.
6. A threaded anti-loosening device according to claim 3, characterized in that a threaded hole (3.1) is provided on the closed end of the anti-loosening sleeve (3) opposite to the open end;
the limiting structure is arranged on the end face of the tail end of the fastening screw rod (1) and corresponds to the threaded hole (3.1).
7. The thread anti-loosening device according to claim 6, wherein the number of the anti-loosening screws (4) is at least two, and the anti-loosening screws (4), the threaded holes (3.1) and the limiting structures are arranged in a one-to-one correspondence manner.
8. Thread anti-loosening device according to any one of claims 3 to 7, characterised in that the limiting structure is a toothed groove (1.2).
9. The thread anti-loosening device according to claim 1, wherein the internal thread is a second internal thread (3.3), a second threaded shaft section (1.3) matched with the second internal thread (3.3) is arranged at the tail end of the fastening screw (1), the thread rotating direction of the second threaded shaft section (1.3) is opposite to that of the fastening screw (1), and the anti-loosening sleeve (3) is detachably connected with the fastening screw (1) through the matching of the second internal thread (3.3) and the second threaded shaft section (1.3).
10. Thread anti-loosening device according to claim 1, characterized in that the hollow cavity of the anti-loosening sleeve (3) is filled with semi-fluid grease (5).
CN201911359739.0A 2019-12-25 2019-12-25 Screw thread anti-loosening device Pending CN110886761A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911359739.0A CN110886761A (en) 2019-12-25 2019-12-25 Screw thread anti-loosening device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911359739.0A CN110886761A (en) 2019-12-25 2019-12-25 Screw thread anti-loosening device

Publications (1)

Publication Number Publication Date
CN110886761A true CN110886761A (en) 2020-03-17

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ID=69753124

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911359739.0A Pending CN110886761A (en) 2019-12-25 2019-12-25 Screw thread anti-loosening device

Country Status (1)

Country Link
CN (1) CN110886761A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113483006A (en) * 2021-07-01 2021-10-08 北京自动化控制设备研究所 Single nut locking structure
CN117267498A (en) * 2023-11-16 2023-12-22 中国航发沈阳黎明航空发动机有限责任公司 Split assembled type combined externally-added nut connected with flat pipe mouth joint

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113483006A (en) * 2021-07-01 2021-10-08 北京自动化控制设备研究所 Single nut locking structure
CN113483006B (en) * 2021-07-01 2023-02-10 北京自动化控制设备研究所 Single nut locking structure
CN117267498A (en) * 2023-11-16 2023-12-22 中国航发沈阳黎明航空发动机有限责任公司 Split assembled type combined externally-added nut connected with flat pipe mouth joint
CN117267498B (en) * 2023-11-16 2024-02-13 中国航发沈阳黎明航空发动机有限责任公司 Split assembled type combined externally-added nut connected with flat pipe mouth joint

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