CN116379234A - Detachable and reusable lock nut - Google Patents

Detachable and reusable lock nut Download PDF

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Publication number
CN116379234A
CN116379234A CN202310296283.8A CN202310296283A CN116379234A CN 116379234 A CN116379234 A CN 116379234A CN 202310296283 A CN202310296283 A CN 202310296283A CN 116379234 A CN116379234 A CN 116379234A
Authority
CN
China
Prior art keywords
ring
rings
inner ring
lock nut
clamping
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
CN202310296283.8A
Other languages
Chinese (zh)
Inventor
王金辉
钟涛
甄登平
陈建军
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.)
Chongqing Machine Tool Group Co Ltd
Original Assignee
Chongqing Machine Tool Group 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 Chongqing Machine Tool Group Co Ltd filed Critical Chongqing Machine Tool Group Co Ltd
Priority to CN202310296283.8A priority Critical patent/CN116379234A/en
Publication of CN116379234A publication Critical patent/CN116379234A/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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F16L23/02—Flanged joints the flanges being connected by members tensioned axially
    • F16L23/036—Flanged joints the flanges being connected by members tensioned axially characterised by the tensioning members, e.g. specially adapted bolts or C-clamps
    • 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
    • F16B39/24—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
    • F16B39/26—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object with spring washers fastened to the nut or bolt-head
    • 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
    • F16L23/00—Flanged joints
    • F16L23/02—Flanged joints the flanges being connected by members tensioned axially
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)

Abstract

The invention relates to the technical field of fasteners, and particularly discloses a detachable and reusable lock nut, which comprises two inner rings and an outer ring capable of holding the two inner rings tightly at the same time, wherein each inner ring is provided with an internal thread, the outer wall of each inner ring is provided with an inclined plane, and when the two inner rings are fastened and installed, the inclined planes on the two inner rings form a V shape; the outer ring comprises two clamping rings which can be mutually abutted, and wedge surfaces which can be abutted against the inclined surfaces of the inner ring are arranged on the clamping rings. The scheme is used for solving the problem that the YSK locking nut with reliable locking performance can not be disassembled for long time and then is reused.

Description

Detachable and reusable lock nut
Technical Field
The invention relates to the technical field of fasteners, in particular to a detachable and reusable lock nut.
Background
The locknut is widely applied to axial fastening, however, as the use time passes, the locknut loosens due to long-term vibration of the locked piece, and once the locknut loosens, the normal use of the locked piece is affected if the locknut is not fastened again; at present, various lock nuts are formed on the market, but basically, the lock nuts have the problem that the lock nuts cannot be reused once detached after a long time. Taking one of the most reliable lock nuts in the market at present as an example, annular grooves are machined on the inner wall and the outer wall of the lock nut, a through hole penetrating the inner annular groove, the outer annular groove and the nut is machined in the axial direction of the lock nut, a screw can be installed on the through hole, after the nut is provided with the inner annular groove and the outer annular groove, the nut has certain elasticity in the axial direction, the elastic force is determined by the screw on the through hole, the lock nut can bear vibration under long time, but after long-term use, the elasticity of the nut has irrecoverability, which is equivalent to plastic deformation from elastic deformation, and once the lock nut is loosened or needs to be disassembled and reinstalled after long-time use, the lock nut cannot play the due role and cannot be reused because of losing the elasticity.
Disclosure of Invention
The invention aims to provide a detachable and reusable lock nut, so that the problem that the existing YSK lock nut with reliable locking performance cannot be detached and reused after being used for a long time is solved.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the detachable reusable lock nut comprises two inner rings and an outer ring capable of holding the two inner rings tightly at the same time, wherein each inner ring is provided with an internal thread, the outer wall of each inner ring is provided with an inclined surface, and when the two inner rings are fastened and installed, the inclined surfaces on the two inner rings form a V shape; the outer ring comprises two clamping rings which can be mutually abutted, and wedge surfaces which can be abutted against the inclined surfaces of the inner ring are arranged on the clamping rings.
The principle and the advantages of the scheme are as follows: when the locking device is actually applied, when the locking device needs to be locked by the locking piece by matching with the bolt, one inner ring is screwed to the tightly-propped locking piece, then the remaining inner ring is screwed on the bolt, a gap exists between the two inner rings, then the two clamping rings are tightly abutted to enable the formed outer ring to be tightly held simultaneously, the wedge surface is arranged on the clamping rings, the inclined surface is arranged on the inner ring, the two clamping rings are close to the inclined surface in the process, the wedge surface is continuously propped against the inclined surface to move, the inclined surfaces of the two inner rings form a V shape, the stress directions of the two inclined surfaces are opposite, and then the two inner rings move along the opposite axial directions. After the outer ring locks the inner ring, the outer ring and the two inner rings form a complete whole, but the inclined planes move in opposite directions in the locking process of the two inner rings, so that the screw pitches of the two inner rings arranged on the bolt under the whole nut are unequal, the whole nut is difficult to be vibrated loose under the condition of vibration in long-term use, and the anti-loosening effect of the nut under the long-term use is ensured.
When the nut is required to be disassembled, the connection of the two clamping rings is firstly disassembled, after the clamping rings are disassembled, the two inner rings are changed into independent inner rings, and the inner rings and the clamping rings are not damaged, so that the nut can be reused after being disassembled, and the problem that the YSK locking nut in the prior art cannot be reused after being disassembled after being used for a long time is solved.
Preferably, as an improvement, the V-shaped bellmouth formed by the two inclined planes faces the center of the inner ring, each clamping ring is semicircular, each clamping ring is provided with a trapezoid groove on the annular inner wall facing the inner ring, two groove walls of the trapezoid groove form two wedge surfaces, and the two wedge surfaces of the same clamping ring can simultaneously abut against the inclined planes on the two inner rings.
Preferably, as an improvement, the V-shaped bellmouth formed by the two inclined planes faces the center of the inner ring, each clamping ring is in a circular ring shape, each clamping ring is provided with a conical surface, the conical surfaces form wedge surfaces for pushing the inclined planes of the inner ring, and one clamping ring correspondingly pushes against the inclined planes of one inner ring.
Preferably, as an improvement, the V-shaped bellmouth formed by the two inclined planes faces the outer part of the inner ring, the clamping rings are semicircular, each clamping ring faces the annular inner wall of the inner ring and is provided with a bulge with a trapezoid longitudinal section, two inclined planes of the trapezoid bulge form two wedge surfaces, and the two wedge surfaces of the same clamping ring can simultaneously abut against the inclined planes of the two inner rings.
Preferably, as an improvement, one of the opposite end surfaces of the two snap rings is provided with a unthreaded hole, and the other one is provided with a threaded hole, and the two snap rings are fixedly connected through screws inserted into the through holes and the threaded holes.
Preferably, as an improvement, a spring washer is sleeved on the screw, and the screw is matched with the spring washer to prevent the screw from loosening.
Preferably, as an improvement, a tightening groove is formed in the outer side wall of the inner ring, and one of the inclined groove walls of the tightening groove is an inclined surface. Through the setting of supporting tight groove for the volume of inner circle is great, has higher intensity.
Preferably, as an improvement, the end face of the inner ring is provided with a hole, so that a hand rod of the handle is conveniently inserted into the blind hole of the end face of the inner ring to screw the inner ring.
Drawings
Fig. 1 is a longitudinal sectional view (may also be referred to as a front sectional view) of a first embodiment of the present invention.
Fig. 2 is a schematic view of a direction a according to a first embodiment of the present invention.
Fig. 3 is a schematic diagram of a B-direction of a first embodiment of the present invention.
Fig. 4 is a front cross-sectional view of the outer race of fig. 1, with the outer race removed.
Fig. 5 is a schematic three-dimensional structure of the snap ring of fig. 1.
Fig. 6 is a longitudinal sectional view (may also be referred to as a front sectional view) of a second embodiment of the present invention.
Fig. 7 is a schematic diagram of a C-direction diagram in a second embodiment of the present invention.
Fig. 8 is a longitudinal sectional view (may also be referred to as a front sectional view) of a trapezoidal protruding strip void-avoidance groove in the third embodiment of the present invention.
Fig. 9 is a longitudinal sectional view (may also be referred to as a front sectional view) of a trapezoidal projection without a clearance groove in the third embodiment of the present invention.
Detailed Description
The following is a further detailed description of the embodiments:
reference numerals in the drawings of the specification include:
fig. 1 to 5: the inner ring 1, the abutting groove 11, the inclined surface 110, the blind hole 12, the outer ring 2, the clamping ring 21, the wedge surface 210, the trapezoid groove 211, the screw 3 and the spring washer 4.
Fig. 6 and 7: inner ring 1, inclined surface 110, blind hole 12, outer ring 2, snap ring 21, wedge surface 210, screw 3, spring washer 4.
Fig. 8 and 9: the inner ring 1, the abutting groove 11, the inclined surface 110, the blind hole 12, the outer ring 2, the clamping ring 21, the wedge surface 210, the bulge 220 and the clearance groove 221.
Example 1
The embodiment is basically as shown in figures 1 to 5, and the detachable and reusable lock nut comprises two inner rings 1 and an outer ring 2 capable of holding the two inner rings 1 simultaneously, wherein the centers of the two inner rings 1 are both provided with internal threads, and the two inner rings 1 are symmetrical in structure; an annular propping groove 11 is machined on the outer wall of each inner ring 1, the longitudinal section of each propping groove 11 is in a right trapezoid shape in the embodiment, one inclined groove wall of each propping groove 11 is an inclined surface 110, and when two inner rings 1 are fastened and installed, the inclined surfaces 110 on the two inner rings 1 form a V shape. The V-shaped flare formed by the two inclined surfaces 110 is directed toward the center of the inner ring 1,
the outer ring 2 comprises two clamping rings 21 which can be mutually abutted, each clamping ring 21 is semi-circular, each clamping ring 21 faces the annular inner wall of the inner ring 1 and is provided with a trapezoid groove 211, two wedge surfaces 210 are formed by two groove walls of the trapezoid groove 211, and the two wedge surfaces 210 of the same clamping ring 21 can simultaneously push the inclined surfaces 110 on the two inner rings 1. The trapezoid groove 211 in this embodiment makes the inner ring 1 larger, which is beneficial for the inner ring 1 to have higher strength.
One of the opposite end surfaces of the two snap rings 21 is provided with a unthreaded hole, and the other one is provided with a threaded hole, and the two snap rings 21 are fixedly connected through screws 3 inserted into the through holes and the threaded holes. In this embodiment, since the snap ring 21 is in a semicircular shape, the screw 3 is perpendicular to the axial direction of the nut, the light hole is a stepped hole, and the screw 3 is a screw with a head.
In order to increase the locking effect of the screw 3 on the two clamping rings 21, a spring washer 4 is sleeved on the screw 3.
The end face of the inner ring 1 is provided with a blind hole 12 which is eccentrically arranged, and the blind hole 12 is parallel to the internal threads of the inner ring 1, so that a spanner can be conveniently inserted into the blind hole 12 on the end face of the inner ring 1 to screw the inner ring 1.
The specific implementation process is as follows:
when the locking piece is required to be locked by the bolt, one inner ring 1 is screwed to abut against the locking piece, then the remaining inner ring 1 is screwed on the bolt, a gap exists between the two inner rings 1, and then the two clamping rings 21 are abutted to enable the formed outer ring 2 to simultaneously hold the outer ring 2, so that the state shown in fig. 1 is achieved. Because the wedge surface 210 is arranged on the snap ring 21, and the inclined surface 110 is arranged on the inner ring 1, the wedge surface 210 continuously pushes the two inclined surfaces 110 to move along the axial direction of the nut and approach each other in the approaching process of the two snap rings 21. After the outer ring 2 locks the inner ring 1, that is, after the two snap rings 21 are connected through the screw 3, the outer ring 2 and the two inner rings 1 form a complete whole, but because the moving directions of the inclined planes 110 in the locking process of the two inner rings 1 are opposite, the screw pitches of the two inner rings 1 arranged on the bolt under the whole nut are not equal, so that the whole nut is still difficult to be vibrated and loosened under the condition of vibration after long-term use, and the anti-loosening effect of the nut under the long-term use is ensured.
When the nut is required to be disassembled, the screw 3 connected with the two clamping rings 21 is firstly disassembled, after the clamping rings 21 are disassembled, the two inner rings 1 become independent inner rings 1, the two inner rings 1 are mutually independent, and the inner rings 1 and the clamping rings 21 are not damaged in the disassembling process, so that the nut can be reused after being disassembled.
Example two
Referring to fig. 6 and 7, the second embodiment is different from the first embodiment in that: first, the inner ring 1 is not machined with a tightening groove, but an inclined surface 110 is provided on the outer peripheral surface of the inner ring 1, the inclined surface 110 formed by combining the two inner rings 1 is still V-shaped, and the bell mouth of the V-shape is still toward the center of the inner ring 1. Second, each snap ring 21 is not semicircular, but is circular, and conical surfaces are machined on opposite surfaces of the two snap rings 21, wherein the conical surfaces form wedge surfaces 210 for pushing the inclined surfaces 110 of the inner rings 1, and one snap ring 21 correspondingly pushes the inclined surfaces 110 on one inner ring 1. Third, the mounting direction of the screw 3 becomes parallel to the nut axial direction.
Compared with the first embodiment, the structure of the snap ring 21 and the structure of the inner ring 1 in the first embodiment are changed, and the screw pitch of the two inner rings 1 fastened on the bolt can still be changed due to the nut structure under the cooperation of the snap ring 21, so that the anti-loosening effect under long-term use is achieved, and meanwhile, the disassembled nut can be reused.
Example III
Referring to fig. 8 and 9, the third embodiment is different from the first embodiment in that: the position of the inclined plane 110 on the abutting groove 11 of each inner ring 1 is changed, and the inclined planes 110 of the two inner rings 1 after being installed on the bolts form a V shape with a bell mouth facing the outer part of the inner ring 1; the snap rings 21 are still semicircular, and the difference is that the annular inner wall of each snap ring 21 facing the inner ring 1 is not a trapezoid groove, but a protrusion 220 with a trapezoid longitudinal section, two inclined surfaces 110 of the trapezoid protrusion 220 form two wedge surfaces 210, and the two wedge surfaces 210 of the same snap ring 21 can simultaneously abut against the inclined surfaces 110 on the two inner rings 1. In fig. 8, the inner ring 1 is provided with the abutting groove 11 having a right trapezoid structure, and thus the middle of the protrusion 220 of the snap ring 21 is provided with the annular clearance groove 221 for avoiding the inner ring 1. Of course, when the inclined surface 110 of the inner ring 1 is provided only on the outer peripheral surface, that is, as shown in fig. 9, the protrusions 220 of the snap ring 21 at this time are not provided with the clearance grooves 221.
In the third embodiment, no matter how the scheme of fig. 8 or fig. 9 is adopted, when the two snap rings 21 are fastened by the screw, the two snap rings 21 are close to each other and push the two inner rings 1 with the inclined planes 110 to the opposite directions of the axial direction of the nut by the wedge surface 210, the embodiment keeps the two inner rings 1 away from each other, which still corresponds to that the two inner rings 1 are mounted on the screw with different pitches, but forms a whole by the snap rings 21, so that the effect of long-term use without loosening as achieved in the first embodiment can still be achieved.
In addition, since the inner ring 1 and the snap ring 21 of the third embodiment are not provided with the elastic strip-shaped grooves, even if the nut is used for a long time, the condition that the inner ring 1 or the snap ring 21 is deformed in an unrecoverable manner is avoided, and further, the nut of the third embodiment can be continuously reused even if the nut is disassembled after being used for a long time.
The foregoing is merely exemplary of the present invention, and specific technical solutions and/or features that are well known in the art have not been described in detail herein. It should be noted that, for those skilled in the art, several variations and modifications can be made without departing from the technical solution of the present invention, and these should also be regarded as the protection scope of the present invention, which does not affect the effect of the implementation of the present invention and the practical applicability of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims (8)

1. Can dismantle used repeatedly lock nut, its characterized in that: the inner ring comprises two inner rings and an outer ring capable of holding the two inner rings tightly at the same time, each inner ring is provided with an internal thread, the outer wall of each inner ring is provided with an inclined surface, and when the two inner rings are fastened and installed, the inclined surfaces on the two inner rings form a V shape; the outer ring comprises two clamping rings which can be mutually abutted, and wedge surfaces which can be abutted against the inclined surfaces of the inner ring are arranged on the clamping rings.
2. The removable reusable lock nut as claimed in claim 1, wherein: the V-shaped bell mouth that two inclined planes formed is towards the inner circle center, and every snap ring is semi-circular, all is equipped with the dovetail groove on the annular inner wall of every snap ring towards the inner circle, and two cell walls in dovetail groove form two wedge faces, and two wedge faces of same snap ring can offset with the inclined planes on two inner circles simultaneously.
3. The removable reusable lock nut as claimed in claim 1, wherein: the V-shaped bell mouth formed by the two inclined planes faces the center of the inner ring, each clamping ring is in a circular ring shape, each clamping ring is provided with a conical surface, the conical surfaces form wedge surfaces for pushing the inclined planes of the inner ring, and one clamping ring correspondingly pushes against the inclined planes of one inner ring.
4. The removable reusable lock nut as claimed in claim 1, wherein: the V-shaped bell mouth that two inclined planes formed is outside towards the inner circle, and the snap ring is semi-circular, all is equipped with the longitudinal section on the annular inner wall of every snap ring towards the inner circle and is trapezoidal arch, and two inclined planes of trapezoidal arch form two wedge faces, and two wedge faces of same snap ring can offset with the inclined plane on two inner circles simultaneously.
5. The removable, reusable lock nut as claimed in any one of claims 2-4, wherein: one of the opposite end surfaces of the two clamping rings is provided with a unthreaded hole, the other end surface of the two clamping rings is provided with a threaded hole, and the two clamping rings are fixedly connected through screws inserted into the through holes and the threaded holes.
6. The removable reusable lock nut as claimed in claim 5, wherein: and a spring washer is sleeved on the screw.
7. The removable, reusable lock nut as claimed in any one of claims 2-4, wherein: and a tightening groove is formed in the outer side wall of the inner ring, and one inclined groove wall of the tightening groove is an inclined surface.
8. The removable, reusable lock nut as claimed in any one of claims 2-4, wherein: the end face of the inner ring is provided with a hole, so that a hand lever of the handle is conveniently inserted into the end face of the inner ring to screw the inner ring.
CN202310296283.8A 2023-03-23 2023-03-23 Detachable and reusable lock nut Pending CN116379234A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310296283.8A CN116379234A (en) 2023-03-23 2023-03-23 Detachable and reusable lock nut

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310296283.8A CN116379234A (en) 2023-03-23 2023-03-23 Detachable and reusable lock nut

Publications (1)

Publication Number Publication Date
CN116379234A true CN116379234A (en) 2023-07-04

Family

ID=86962677

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310296283.8A Pending CN116379234A (en) 2023-03-23 2023-03-23 Detachable and reusable lock nut

Country Status (1)

Country Link
CN (1) CN116379234A (en)

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