CN111927863B - Double-nut anti-loosening bolt group - Google Patents

Double-nut anti-loosening bolt group Download PDF

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Publication number
CN111927863B
CN111927863B CN202010842727.XA CN202010842727A CN111927863B CN 111927863 B CN111927863 B CN 111927863B CN 202010842727 A CN202010842727 A CN 202010842727A CN 111927863 B CN111927863 B CN 111927863B
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CN
China
Prior art keywords
auxiliary
nut
main
screw rod
bolt
Prior art date
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Active
Application number
CN202010842727.XA
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Chinese (zh)
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CN111927863A (en
Inventor
屠马军
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.)
Haiyan Huilian General Fitting Co ltd
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Haiyan Huilian General Fitting Co ltd
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Publication date
Application filed by Haiyan Huilian General Fitting Co ltd filed Critical Haiyan Huilian General Fitting Co ltd
Priority to CN202010842727.XA priority Critical patent/CN111927863B/en
Publication of CN111927863A publication Critical patent/CN111927863A/en
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Publication of CN111927863B publication Critical patent/CN111927863B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
    • F16B39/00Locking of screws, bolts or nuts
    • F16B39/02Locking of screws, bolts or nuts in which the locking takes place after screwing down
    • F16B39/12Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
    • F16B39/00Locking of screws, bolts or nuts
    • F16B39/22Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28Locking 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
    • F16B39/284Locking by means of elastic deformation

Abstract

The invention discloses a double-nut type anti-loosening bolt group which comprises a main bolt, a main nut, an auxiliary screw rod, an auxiliary nut, a convex ring, a fixing sleeve and an auxiliary bolt, wherein the main bolt consists of a bolt head and a main screw rod, the main screw rod is fixed at the bottom of the bolt head, the main nut is screwed on the main screw rod, the auxiliary screw rod is fixed at the bottom of the main screw rod, the main screw rod and the auxiliary screw rod are positioned on the same axis, the outer diameter of the main screw rod is larger than the outer diameter of the auxiliary screw rod, the rotation direction of a thread on the main screw rod is opposite to that of a thread on the auxiliary screw rod, the auxiliary nut is screwed on the auxiliary screw rod, a circle of convex ring is arranged on the side wall of the auxiliary nut, and the side, close to the bolt head, of the convex ring is fixedly provided with the fixing sleeve. According to the invention, the fixing sleeve, the main nut and the auxiliary nut are matched, so that the main nut is not easy to loosen after the connecting piece is firmly fixed, and the effectiveness of the connecting piece is effectively ensured.

Description

Double-nut anti-loosening bolt group
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of fasteners, in particular to the technical field of bolt groups.
[ background of the invention ]
The fastener is a part for connecting objects, and has various types, wherein bolts and nuts are commonly used bolt sets. The bolt group used by the existing bolt and nut combination is easy to loosen after connection, and the reliability of the bolt group is reduced.
[ summary of the invention ]
The invention aims to solve the problems in the prior art and provides a double-nut anti-loosening bolt group which can be prevented from loosening easily.
In order to achieve the purpose, the invention provides a double-nut type anti-loosening bolt group, which comprises a main bolt, a main nut, an auxiliary screw rod, an auxiliary nut, a convex ring, a fixing sleeve and an auxiliary bolt, wherein the main bolt consists of a bolt head and a main screw rod, the main screw rod is fixed at the bottom of the bolt head, the main screw rod is screwed with the main nut, the bottom of the main screw rod is fixed with the auxiliary screw rod, the main screw rod and the auxiliary screw rod are positioned on the same axis, the outer diameter of the main screw rod is larger than that of the auxiliary screw rod, the rotation direction of a thread on the main screw rod is opposite to that of the auxiliary screw rod, the auxiliary nut is screwed on the auxiliary screw rod, a circle of convex ring is arranged on the side wall of the auxiliary nut, the side of the convex ring close to the head of the bolt is fixed with the fixing sleeve, the fixing sleeve and the auxiliary screw rod are positioned on the same axis, and the fixing sleeve is sleeved outside of the main nut, the main nut is provided with a plurality of threaded holes, the fixing sleeve is provided with a plurality of side grooves penetrating through the side wall of the fixing sleeve, the side grooves are strip-shaped and parallel to the axis of the fixing sleeve, the side grooves correspond to the threaded holes one to one, and the auxiliary nut penetrates through the side grooves and is screwed into the threaded holes.
Preferably, when the auxiliary nut is tightened, a gap is formed between the end of the auxiliary nut and the end of the threaded hole.
Preferably, a spring is clamped between the main nut and the convex ring, one end of the spring is fixed with the convex ring, the spring is coaxial with the auxiliary screw rod, and the spring is sleeved outside the main screw rod and the auxiliary screw rod.
Preferably, opposite sides of the main nut and the convex ring are respectively provided with a circle of mounting groove, and two ends of the spring are respectively embedded into the two mounting grooves.
Preferably, when the auxiliary screw nut is not screwed on the auxiliary screw rod, two blocking rods capable of being pulled out penetrate through the fixing sleeve, the blocking rods are perpendicular to the axis of the auxiliary screw nut, the blocking rods and the convex rings clamp the spring, and when the auxiliary screw nut is screwed on the auxiliary screw rod, the blocking rods do not interfere with the auxiliary screw rod and the main screw rod.
Preferably, the threaded holes are uniformly distributed on one horizontal circumference of the main nut, and the width of the side groove is equal to the maximum inner diameter of the threaded holes.
The invention has the beneficial effects that: according to the invention, the fixing sleeve, the main nut and the auxiliary nut are matched, so that the main nut is not easy to loosen after the bolt group is firmly fixed, and the effectiveness of the bolt group is effectively ensured; the arrangement of the spring enables the bolt set to be more difficult to loosen after being firmly connected.
The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a front view of a double nut type anti-loosening bolt set of the present invention;
fig. 2 is a schematic diagram of an unused state of an auxiliary nut of the double-nut type anti-loosening bolt group.
In the figure: 1-main bolt, 2-main nut, 3-auxiliary nut, 10-bolt head, 11-main screw rod, 12-auxiliary screw rod, 20-mounting groove, 21-threaded hole, 22-auxiliary bolt, 30-convex ring, 31-fixing sleeve, 32-side groove, 35-spring and 36-blocking rod.
[ detailed description ] embodiments
Referring to fig. 1 and 2, the double-nut type anti-loosening bolt set of the present invention includes a main bolt 1, a main nut 2, an auxiliary screw 12, an auxiliary nut 3, a convex ring 30, a fixing sleeve 31, and an auxiliary bolt 22, where the main bolt 1 is composed of a bolt head 10 and a main screw 11, the main screw 11 is fixed at the bottom of the bolt head 10, the main screw 11 is screwed with a main nut 2, the bottom of the main screw 11 is fixed with an auxiliary screw 12, the main screw 11 and the auxiliary screw 12 are located on the same axis, the outer diameter of the main screw 11 is greater than the outer diameter of the auxiliary screw 12, the rotation direction of the thread on the main screw 11 is opposite to the rotation direction of the thread on the auxiliary screw 12, the auxiliary nut 3 is screwed on the auxiliary screw 12, the convex ring 30 is arranged on the side wall of the auxiliary nut 3, a circle of the convex ring 30 close to the bolt head 10 is fixed with a fixing sleeve 31, and the fixing sleeve 31 and the auxiliary screw 12 are located on the same axis, the fixing sleeve 31 is sleeved outside the main nut 2, the main nut 2 is provided with a plurality of threaded holes 21, the fixing sleeve 31 is provided with a plurality of side grooves 32 penetrating through the side wall of the fixing sleeve 31, the side grooves 32 are strip-shaped and parallel to the axis of the fixing sleeve 31, the side grooves 32 correspond to the threaded holes 21 one by one, the auxiliary nut 3 penetrates through the side grooves 32 and is screwed into the threaded holes 21, a gap is reserved between the tail end of the auxiliary nut 3 and the tail end of the threaded hole 21 when the auxiliary nut 3 is screwed down, a spring 35 is clamped between the main nut 2 and the convex ring 30, one end of the spring 35 is fixed with the convex ring 30, the spring 35 is coaxial with the auxiliary screw 12, the spring 35 is sleeved outside the main screw 11 and the auxiliary screw 12, the opposite sides of the main nut 2 and the convex ring 30 are respectively provided with a circle of mounting groove 20, two ends of the spring 35 are respectively embedded into the two mounting grooves 20, two pull-out blocking rods 36 are penetrated on the fixing sleeve 31 when the auxiliary nut 3 is not screwed down on the auxiliary screw 12, the stop rod 36 is perpendicular to the axis of the auxiliary nut 3, the spring 35 is clamped between the stop rod 36 and the convex ring 30, the stop rod 36, the auxiliary screw 12 and the main screw 11 do not interfere with each other when the auxiliary nut 3 is screwed on the auxiliary screw 12, the threaded holes 21 are uniformly distributed on one horizontal circumference of the main nut 2, and the width of the side groove 32 is equal to the maximum inner diameter of the threaded hole 21.
The working process of the invention is as follows:
in the working process of the double-nut type anti-loosening bolt set, the fixing sleeve 31, the main nut 2 and the auxiliary nut 3 are matched, so that the main nut 2 is not easy to loosen after the bolt set is firmly fixed, and the effectiveness of the bolt set is effectively ensured; the arrangement of the spring 35 enables the bolt set to be more difficult to loosen after being firmly connected.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.

Claims (3)

1. The utility model provides a bolt group that two nut formulas are anti-loosening which characterized in that: the bolt comprises a main bolt (1), a main nut (2), an auxiliary screw rod (12), an auxiliary nut (3), a convex ring (30), a fixing sleeve (31) and an auxiliary bolt (22), wherein the main bolt (1) consists of a bolt head (10) and a main screw rod (11), the main screw rod (11) is fixed at the bottom of the bolt head (10), the main screw rod (11) is screwed with the main nut (2), the bottom of the main screw rod (11) is fixed with the auxiliary screw rod (12), the main screw rod (11) and the auxiliary screw rod (12) are positioned on the same axis, the outer diameter of the main screw rod (11) is larger than the outer diameter of the auxiliary screw rod (12), the rotation direction of a thread on the main screw rod (11) is opposite to that of the thread on the auxiliary screw rod (12), the auxiliary screw rod (12) is screwed with the auxiliary nut (3), a circle of convex ring (30) is arranged on the side wall of the auxiliary nut (3), a fixing sleeve (31) is fixed on the side of the convex ring (30) close to the bolt head (10), the fixing sleeve (31) and the auxiliary screw (12) are positioned on the same axis, the fixing sleeve (31) is sleeved outside the main nut (2), a plurality of threaded holes (21) are formed in the main nut (2), a plurality of side grooves (32) penetrating through the side wall of the fixing sleeve (31) are formed in the fixing sleeve (31), the side grooves (32) are strip-shaped and parallel to the axis of the fixing sleeve (31), the side grooves (32) correspond to the threaded holes (21) one by one, the auxiliary nut (3) penetrates through the side grooves (32) and is screwed into the threaded holes (21), a spring (35) is clamped between the main nut (2) and the convex ring (30), one end of the spring (35) is fixed with the convex ring (30), the spring (35) is coaxial with the auxiliary screw (12), and the spring (35) is sleeved outside the main screw (11) and the auxiliary screw (12), the auxiliary screw rod structure is characterized in that opposite sides of the main nut (2) and the convex ring (30) are respectively provided with a circle of mounting groove (20), two ends of the spring (35) are respectively embedded into the two mounting grooves (20), two drawable blocking rods (36) penetrate through the fixing sleeve (31) when the auxiliary nut (3) is not screwed on the auxiliary screw rod (12), the blocking rods (36) are perpendicular to the axis of the auxiliary nut (3), the spring (35) is clamped by the blocking rods (36) and the convex ring (30), and the blocking rods (36) do not interfere with the auxiliary screw rod (12) and the main screw rod (11) when the auxiliary nut (3) is screwed on the auxiliary screw rod (12).
2. A double nut anti-loosening bolt set as defined in claim 1, wherein: when the auxiliary nut (3) is screwed down, a gap is reserved between the tail end of the auxiliary nut (3) and the tail end of the threaded hole (21).
3. A double nut anti-loosening bolt set as defined in claim 1, wherein: the threaded holes (21) are uniformly distributed on one horizontal circumference of the main nut (2), and the width of the side groove (32) is equal to the maximum inner diameter of the threaded holes (21).
CN202010842727.XA 2020-08-20 2020-08-20 Double-nut anti-loosening bolt group Active CN111927863B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010842727.XA CN111927863B (en) 2020-08-20 2020-08-20 Double-nut anti-loosening bolt group

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010842727.XA CN111927863B (en) 2020-08-20 2020-08-20 Double-nut anti-loosening bolt group

Publications (2)

Publication Number Publication Date
CN111927863A CN111927863A (en) 2020-11-13
CN111927863B true CN111927863B (en) 2022-04-01

Family

ID=73305887

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010842727.XA Active CN111927863B (en) 2020-08-20 2020-08-20 Double-nut anti-loosening bolt group

Country Status (1)

Country Link
CN (1) CN111927863B (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191209594A (en) * 1912-04-23 1913-01-16 Geoge Orbin Improvements in and relating to Nut Locks.
CN101975214A (en) * 2010-11-16 2011-02-16 吴江市金茂五金有限公司 Anti-loose fastening method of bolt pair
CN202545528U (en) * 2012-03-02 2012-11-21 徐斌 Bidirectional thread safety fastener
CN205639239U (en) * 2016-04-11 2016-10-12 海盐汇联通用配件有限公司 Locking effectual nut
CN210106376U (en) * 2019-04-25 2020-02-21 苏州特诺狮金属科技有限公司 Locking fastening bolt subassembly that takes off
CN209977039U (en) * 2019-06-03 2020-01-21 九江市盟祥联轴器有限公司 Anti-loosening fastener

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Publication number Publication date
CN111927863A (en) 2020-11-13

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