WO2018039948A1 - Structure de liaison de fixation, ensemble de liaison de fixation et mécanisme de bielle de vilebrequin - Google Patents

Structure de liaison de fixation, ensemble de liaison de fixation et mécanisme de bielle de vilebrequin Download PDF

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Publication number
WO2018039948A1
WO2018039948A1 PCT/CN2016/097442 CN2016097442W WO2018039948A1 WO 2018039948 A1 WO2018039948 A1 WO 2018039948A1 CN 2016097442 W CN2016097442 W CN 2016097442W WO 2018039948 A1 WO2018039948 A1 WO 2018039948A1
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Prior art keywords
rotation
rotation preventing
sleeve
hole
screw
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PCT/CN2016/097442
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English (en)
Chinese (zh)
Inventor
杨东佐
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杨东佐
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Publication date
Application filed by 杨东佐 filed Critical 杨东佐
Priority to PCT/CN2016/097442 priority Critical patent/WO2018039948A1/fr
Publication of WO2018039948A1 publication Critical patent/WO2018039948A1/fr

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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
    • F16B39/10—Locking of screws, bolts or nuts in which the locking takes place after screwing down by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly perpendicular to the axis of the bolt

Definitions

  • the invention relates to a fastening connection technology of a thread pair mechanically coupling two or more objects; in particular, a mechanical static connection of a crankshaft linkage mechanism, a track structure, an aircraft, a ship, a device, and an aviation through a screw and a lock nut
  • the fastening components and the crankshaft linkage mechanism are particularly harsh in use environment such as large vibration, high temperature environment, large load, etc., and the connection reliability of the mechanical connection of the thread pair is particularly high.
  • Threaded sub-mechanical static joints between objects have some bolts broken at key parts, safety problems caused by failure of threaded connections and safety accidents, which are often encountered in the world, and are a common problem faced by technicians in the field. Solve the problem that has not been solved. Small bolts, large accidents, and frequent major accidents due to bolt breakage, such as the collapse of the connecting rod bolts of the engine of the automobile; the accident of 1 death and 4 injuries caused by the break of the bolts of Harbin tower crane on April 18, 2009; Taiwan's media reported that the No. 1 reactor of the No. 2 Plant of the Nuclear Power Plant detected 7 anchor bolt breaks and damages that may cause nuclear safety accidents; the guidance of the No.
  • the reliability of the threaded connection is ensured by the self-locking of the friction of the thread pair and the friction between the contact faces of the thread pair.
  • the connecting thread has a certain self-locking property and does not automatically loosen under static load conditions.
  • the friction between the pairs of threads will disappear or decrease instantaneously; at the same time, in the case of high temperature or temperature changes, the material will creep and stress relaxation, and the friction will be reduced. Under multiple actions, the threaded connection is gradually released.
  • the main reason for the failure of the threaded connection is that the thread is loose due to the reduction of the pre-tightening force. Therefore, the essence of the threaded connection is to prevent the thread pair from rotating in the direction of loosening (that is, the direction between the threaded hole and the externally threaded portion). Rotate in the direction of rotation, such as the rotation between the bolt and the nut.
  • the existing mechanical mechanical anti-loosening methods mainly include mechanical anti-loose methods such as a split pin, a stop pad and a string wire rope. Many of the aircraft are now also using the anti-loose method of the series wire rope.
  • the lock nut is provided with a threaded through hole and an internal gear-shaped rotation stop hole communicating therewith, and the minimum hole diameter of the rotation stop hole is larger than the diameter of the threaded through hole.
  • the rotation preventing sleeve is provided with a rotation preventing through hole, and the outer circumference of the rotation preventing sleeve is an outer gear shape, and a rotation preventing strip is arranged on the wall of the rotation preventing through hole, and a rotation preventing groove is matched with the rotation preventing strip on the screw.
  • the outer gear-shaped outer circumference of the anti-rotation sleeve and the gear-shaped hole wall of the lock nut rotation-stop hole cooperate with the constraint lock nut to rotate relative to the rotation sleeve, and the rotation sleeve of the rotation sleeve is inserted into the rotation groove of the screw to restrain the screw relative to the rotation sleeve Rotating, so the screw and the lock nut are mounted non-rotatably.
  • the anti-loose nut connection structure includes connecting parts and Through the screw of the connecting piece, the screw on the screw is fastened to the connecting piece, the outer side of the nut is sleeved with a anti-loose ferrule, and the anti-rotation structure between the anti-rotation ferrule and the connecting piece is provided, and the anti-rotation structure includes a corresponding connector
  • the sinking groove provided by the nut is arranged in the sinking groove after the nut is screwed, and the outer ring of the anti-loose ferrule is provided with a chuck, and the inner side wall of the sinking groove is provided with a card slot for the chuck to be inserted; the height of the anti-loose ferrule is less than Shen
  • the height of the groove, the anti-loose ferrule and the nut and the sink are an interference fit.
  • the anti-loose nut connecting structure of the invention has a anti-rotation ferrule and a anti-rotation structure between the anti-loose ferrule and the connecting member, and the inner ring of the anti-loose ferrule is a regular hexagonal structure matched with the nut, preventing The inner ring of the loose ferrule and the nut cannot rotate relative to each other, and the anti-rotation structure prevents the anti-loose ferrule from rotating relative to the connecting member, thereby preventing the nut from loosening after being fastened.
  • the anti-loose nut connecting structure realizes the prevention of the looseness of the nut, but on the one hand, since the height of the anti-loose ferrule is smaller than the height of the sinking groove, and the anti-loose ferrule is in an interference fit with the nut and the sinking groove, the disassembly prevention When loosening the nut connection structure, the anti-loose and anti-loose ferrule cannot be taken out from the sinking groove, and the anti-loose and anti-loose ferrule cannot be taken out, so that the nut and the screw cannot be separated, so that the use of the threaded pair connection is lost.
  • Patent No. ZL201520399393.8 discloses a self-tightening nut and a bolt fastener.
  • the fastener includes a self-tightening nut body, a self-tightening washer and a common bolt; the self-tightening nut body is in contact with the self-tightening washer The surface is a smooth transition spiral surface; the self-tightening nut body is screwed with the common bolt; the bolt fastener includes a self-tightening bolt, a self-tightening washer and a common nut; the ordinary nut is screwed with the self-tightening bolt.
  • the self-tightening nut and the bolt fastener adopt a self-tightening principle, and a self-tightening structure is arranged on the nut or the bolt to make the self-tightening effect after the locking, so that the nut is no longer displaced or loosened.
  • This kind of self-nut also known as self-tightening nut and never loose nut, and claims that its anti-loose ability exceeds the hardlock nut, has been reported in CCTV. Since this nut is not widely used, its anti-loosening effect cannot be judged.
  • a front-end single-thread spiral rear double-line anchoring screw which mainly comprises a screw, and the screw has a self-tapping thread and a screw tail.
  • the connecting end is provided with a connecting structural member, the connecting structural member is a hexagonal head, the outer hexagon head is provided with a gasket, and the bottom of the gasket is provided with a locking tooth.
  • a screw structure is disclosed, and all the structures described are part of the screw structure. From the point of view of the figure and the words on the outer hexagonal head, it can be understood without any objection.
  • the gasket is a part of the screw, so there is no through-hole which is provided with the hexagonal head on the gasket.
  • the gasket is installed outside the outer hexagonal head, and the gasket and the screw are two separate members. Since the gasket is a part of the screw, during the screwing process of the screw, the anti-loose teeth on the gasket and the gasket also rotate with the screw, so that although the anti-loose teeth are provided on the gasket, the anti-loose teeth are embedded.
  • the connected object is not only embedded in the axially connected object, but in the process of rotation, the axial and circumferential displacements are embedded in the connected object, so that the anti-loose teeth will be connected to the connected object during the rotation of the screw.
  • the surface forms a circumferential groove that is shallower and deeper in the direction in which the screw is screwed.
  • the circumferential groove destroys the appearance of the connected object; on the other hand, the insertion force of the anti-loose tooth and the connected object is greatly reduced, and it can be said that the anti-loose effect of the anti-loose tooth on the screw is very limited; In particular, due to the presence of the embedded teeth, it is difficult for the screws to lock the connected objects. Therefore, the locking teeth of the screw of this structure can not play the role of relaxation, and the screw of this structure has no use value.
  • the present invention overcomes the prior art anti-loose technical solution that the anti-rotation sleeve restricts the rotation of the thread pair to the loosening direction, and it is difficult or impossible to stop the rotation sleeve. Taken out of the first tore hole, resulting in a useless inertia thinking.
  • the technical problem to be solved by the present invention is to provide a rotation stop that does not require a rotation stop member, and does not need to have a rotation stop sleeve on the outer circumference of the rotation preventing sleeve, and a rotation stop on the attachment body and the outer circumference of the rotation prevention sleeve.
  • the hole is used to restrain the rotation of the rotation sleeve relative to the attachment body, the structure is simple, the fastening structure of the rotation sleeve is convenient to install and disassemble, the fastening connection component, and the crankshaft linkage mechanism.
  • a fastening connection structure includes a fastening connection assembly, a mother body and an attachment body;
  • the fastening connection assembly includes a screw and a lock nut;
  • the screw includes an external thread portion and a rotation stop abutting portion, and the rotation preventing abutting portion radially protrudes the external thread portion
  • the mother body and the attached body are respectively provided with through holes that cooperate with the external thread portion of the screw; the screw passes through the through hole of the female body, and the through hole of the attached body is screwed with the lock nut, and the screw is non-rotatably mounted with the mother body.
  • the fastening connection assembly further comprises a rotation preventing sleeve; the outer circumference of the lock nut is provided with a circumferentially evenly arranged, axial nut rotation preventing portion; and only one axial rotation preventing through hole is provided on the rotation preventing sleeve, and the rotation is stopped
  • the hole wall of the through hole is provided with a rotation preventing sleeve inner rotation portion matched with the nut rotation preventing portion; and an end surface of the rotation preventing sleeve is axially convexly provided with the restraining rotation preventing sleeve rotating toward the loosening direction of the lock nut
  • the sleeve rotation stop boss, the resisting position of the rotation sleeve of the rotation sleeve is in the circumferential direction and toward the loosening direction of the lock nut; the side of the attachment body facing away from the mother body is provided with the clearance fit of the rotation sleeve of the rotation sleeve
  • the body has
  • the boss is inserted into the anti-rotation hole of the body, and the rotation sleeve is axially restrained outside the lock nut; the rotation stop of the nut and the rotation stop of the rotation sleeve cooperate with the rotation of the lock nut relative to the rotation sleeve, and the rotation is stopped.
  • the sleeve anti-rotation boss is rotated by the attachment rotation stop hole on the side facing the unscrewing direction of the lock nut to restrain the rotation of the rotation sleeve relative to the attachment body; the screw and the lock nut are non-rotatably mounted with the base body and the attachment body.
  • a fastening connection structure includes a fastening connection assembly, a mother body and an attachment body;
  • the fastening connection assembly includes a screw and a lock nut;
  • the screw includes an external thread portion and a rotation stop abutting portion, and the rotation preventing abutting portion radially protrudes the external thread portion
  • the mother body and the attachment body are respectively provided with through holes that cooperate with the external thread portion of the screw;
  • the fastening connection assembly further includes a rotation preventing sleeve and a rotation preventing pad; the outer circumference of the locking nut is provided with a circumferentially evenly arranged axial nut.
  • the rotation preventing pad has a rotation preventing boss; the height of the rotation preventing protrusion of the rotation preventing sle
  • the sleeve anti-rotation boss is rotated by the anti-rotation pad on the side facing the unscrewing direction of the lock nut, and the rotation of the anti-rotation sleeve is opposite to the rotation-stopping pad; the screw and the lock nut are non-rotatably coupled with the mother body, the body, and the rotation stop.
  • the pads are mounted together.
  • a fastening connection assembly further includes a screw and a lock nut; the screw includes an external thread portion and a rotation preventing abutting portion, and the rotation preventing abutting portion radially protrudes the external thread portion; further includes a rotation preventing sleeve; and an outer circumference of the lock nut a circumferentially evenly arranged, axial nut rotation preventing portion; the rotation sleeve is annular, and only one axial rotation preventing through hole is provided in the rotation preventing sleeve, and a circumference is provided on the hole wall of the rotation preventing through hole a uniformly arranged, axially-rotating sleeve inner rotation preventing portion; axially convexly disposed on one end surface of the rotation preventing sleeve to cooperate with the auxiliary rotation preventing hole and/or the rotation preventing pad rotation preventing hole, and the restraining rotation preventing sleeve
  • the height of the rotation preventing sleeve of the rotation preventing sleeve is larger than the axial length of the rotation preventing portion of the rotation preventing sleeve.
  • the improvement further includes a rotation preventing pad; the through hole is provided with a through hole that cooperates with the external thread portion of the screw; and the rotation preventing pad rotation hole that is matched with the rotation preventing projection boss of the rotation preventing sleeve; On the end surface of the body, an anti-rotation pad anti-rotation boss that cooperates with the attachment rotation-receiving hole is protruded in the axial direction; the height of the anti-rotation sleeve rotation-rotation boss is less than or equal to the thickness of the rotation-proof pad.
  • the improvement further includes a rotation preventing pad; the through hole is provided with a through hole that cooperates with the external thread portion of the screw; and the rotation preventing pad rotation hole that is matched with the rotation preventing protrusion of the rotation preventing sleeve; the backing pad is separated from the rotation preventing pad
  • One side of the rotating sleeve is provided with an embedded portion or sprayed with friction particles; the embedded portion is an embedded protrusion provided on the end surface of the rotation preventing pad, or an embedded side disposed outside the rotation preventing pad; the rotation preventing sleeve The height is less than or equal to the thickness of the rotation pad.
  • the anti-rotation sleeve comprises an annular anti-rotation sleeve body, a central through-hole is arranged at the axial center of the anti-rotation sleeve body, and two or more elastic arms are elastically protruded from the same side of the anti-rotation sleeve body, and the elastic
  • the end portion of the arm forms a limiting portion radially inwardly, and the inner side surface of the limiting portion is provided with a rotation preventing portion inside the rotation preventing sleeve, and the limiting portion is provided with an inner side surface of the rotation preventing portion of the rotation preventing sleeve to form a non-closed portion Stopping the through hole; the rotation preventing sleeve of the rotation sleeve is on the same side as the limiting portion.
  • the anti-rotation sleeve further includes a resilient arm; the anti-rotation sleeve is provided with a sluice groove that communicates with the anti-rotation through-hole, cooperates with the elastic arm, and is used for accommodating the elastic arm and providing a deformation space for the deformation of the elastic arm.
  • the through hole is a non-closed hole; one end of the elastic arm is connected to a side of the rotation preventing sleeve that faces away from the rotation preventing boss of the rotation sleeve, and the other end is provided with one side of the rotation preventing sleeve of the rotation preventing sleeve
  • a limiting portion is disposed at an axial end of the end portion of the end of the rotation preventing through hole, the limiting portion is perpendicular to the axis of the rotation preventing through hole, and the limiting portion radially protrudes the rotation preventing through hole; the elastic arm and the avoidance groove Right.
  • the rotation preventing portion of the rotation preventing sleeve is disposed on the rotation preventing sleeve, instead of being disposed on the limiting portion of the elastic arm, the rotation preventing through hole is not deformed by the external force, and the rotation preventing effect is good.
  • a limit member is further included, and one stop sleeve corresponds to one limit member;
  • the limiting member comprises an annular limiting member body, and only one central through hole is arranged at a central position of the limiting member body, the minimum aperture of the central through hole is larger than the maximum aperture of the stopping through hole; and the limiting member body is further included
  • Two or more elastic arms are connected, and a limiting portion parallel to the limiting member body is arranged at an axial end of the elastic arm toward the central through hole axial direction, and the limiting portion radially protrudes the central through hole; two or more limits
  • the minimum inner diameter of the bit portion is smaller than the minimum inner diameter of the stop through hole;
  • the anti-rotation sleeve is provided with a hollow space for engaging with the elastic arm for accommodating the elastic arm and providing a deformation space for the deformation of the elastic arm; the limiting member and the rotation preventing sleeve are mounted together, and the elastic arm and the rotation preventing sleeve are arranged
  • the space of the avoidance space cooperates; the limiting portion of the limiting member radially protrudes from the stopping through hole of the rotation preventing sleeve; in the direction parallel to the body of the limiting member, the maximum deformation amount of the elastic arm is larger than the limiting portion of the limiting member
  • the limiting portion of the limiting member protrudes from the limiting member body, and the limiting member body is mounted on one end surface of the rotation preventing sleeve, the elastic arm axially extends into the cutout space, and the limiting portion extends radially Stop turning in the through hole.
  • the rotation stop limit component of the structure, the limit member can be a plastic piece, and the limit piece is fixed with the rotation stop sleeve by placing the rotation stop sleeve in the mold of the molded plastic part and forming the limit piece. .
  • the elastic arm includes a first elastic arm connected to the limiting member body, and the central through hole is formed along the end of the first elastic arm a curved elastic arm of the axial center, a second elastic arm formed vertically along the end of the curved elastic arm, and a limiting portion disposed at an end of the second elastic arm; the first elastic arm, the curved elastic arm, and the The two elastic arms form a U-shaped elastic arm, and the U-shaped elastic arms face the groove.
  • the limit member can be a metal stamping part, and the limit piece and the rotation stop sleeve are fixed together by spot welding, and the cost is low.
  • the improvement further includes a limiting member; the limiting member comprises two or more elastic limiting members; the elastic limiting member comprises a horizontal limiting portion, and the first elastic arm bent by the vertical limiting portion is along the first The end of the elastic arm is bent toward the limiting portion and the parallel limiting portion is bent, and then bent obliquely upwards away from the limiting portion, and then bent obliquely downward, and then toward the limiting portion and the parallel limiting portion The bent buckle is further bent along the end of the buckle, and the second elastic arm is bent along the end of the second elastic arm away from the limit portion. unit;
  • the anti-rotation sleeve is provided with a hollow hole for engaging with the elastic arm for accommodating the elastic arm and providing a deformation space for the deformation of the elastic arm;
  • the limiting portion of the elastic limiting member is directed toward the axial center of the rotation preventing sleeve, and the elastic buckle is passed through the hollow through hole on the rotation preventing sleeve, and is buckled by one side of the elastic limiting member, and one side is resisted
  • the portion of the elastic limiting member and the limiting member are mounted together, and the limiting portion of the elastic limiting member radially protrudes from the hole wall of the rotation preventing through hole of the rotation preventing sleeve, and between the elastic arms of the elastic limiting member The distance from the limiting portion of the elastic limiting member protrudes from the length of the hole wall of the rotation preventing through hole of the rotation preventing sleeve.
  • the anti-rotation limit component of the structure, the elastic limiting member can be a metal stamping part, and the elastic limiting piece is directly fastened on the anti-rotation sleeve to install the elastic limiting piece and the anti-rotation sleeve together, the cost is low, and the elastic limit is
  • the relative rotation sleeve can also be disassembled, and the material cost of the limiting member is greatly reduced.
  • the fastening connection assembly further comprises a limiting member; a locking groove is arranged on the locking nut; the limiting member is a snap ring, and the snap ring comprises a non-closed annular snap ring body on the card
  • the outer circumference of the ring body is provided with three or more limiting ribs protruding from the body of the snap ring; the inner circumference of the snap ring body is matched with the outer circumference of the bottom of the locking nut; the outer diameter of the limiting rib is larger than the rotation sleeve
  • the maximum aperture of the through-opening hole; the snap ring is mounted in the slot to axially limit the side of the anti-rotation sleeve away from the nut rotation preventing protrusion.
  • the snap ring of the structure does not need to be particularly large, and can limit the stop sleeve, and the limit effect is good.
  • the outer circumference of the lock nut is provided with a limiting portion accommodating space matched with the limiting portion, at the limit
  • the surface of the accommodating space facing the rotation preventing abutting portion of the screw is abutting surface for resisting the limiting portion; the rotation preventing sleeve is installed outside the locking nut, and the elastic arm is elastically deformed to insert the limiting portion into the limiting portion accommodating space.
  • the inner surface is restrained by the abutting surface of the accommodating space of the limiting portion, and is axially restricted to the side of the rotation preventing sleeve facing away from the external thread portion.
  • a rotation preventing boss for restraining the rotation of the lock nut screw relative to the parent body is axially convexly formed on the end surface of the screw rotation preventing portion toward the external thread portion.
  • a fastening structure for a fastening joint assembly comprising any one of the three, four, seven or twelve aspects, further comprising a base body and an attachment body; the base body and the attachment body are respectively provided with a joint with the external thread portion of the screw hole;
  • the fastening connection assembly further includes a rotation preventing pad; the through hole is provided with a through hole that cooperates with the external thread portion of the screw, and the rotation preventing pad rotation hole that is matched with the rotation preventing protrusion of the rotation preventing sleeve; the rotation preventing sleeve is stopped
  • the height of the boss is less than or equal to the thickness of the rotation pad;
  • the screw passes through the through hole on the female body, the through hole on the attached body, and the through hole of the rotation preventing pad is screwed with the lock nut, and the screw is non-rotatably mounted with the mother body; the side of the rotation preventing pad facing away from the rotation preventing sleeve An inserting portion is provided, the hardness of the attached body is smaller than the hardness of the embedded portion of the rotation preventing pad, and the embedded portion of the rotation preventing pad is embedded in the attached body to restrain the rotation of the rotation preventing pad relative to the attached body; or spraying the side of the rotation preventing pad away from the rotation preventing sleeve
  • the friction particles, the friction particles of the rotation preventing pad and the attached body generate a sufficient friction force to restrain the rotation of the rotation preventing pad relative to the attached body; or the rotation preventing pad is fixed on the attached body by the fixing glue to restrain the rotation of the rotation preventing pad relative to the attached body;
  • the rotation sleeve is installed outside the lock nut, the
  • a non-rotation boss for restraining the rotation of the lock nut screw relative to the base body is axially protruded on the end surface of the screw rotation preventing portion toward the external thread portion;
  • the rotation preventing pad further includes a screw rotation preventing pad, the screw The rotation preventing hole on the rotation preventing pad is matched with the rotation preventing boss of the screw;
  • the inserting portion is provided on the side of the screw rotation preventing pad facing the female body, and the hardness of the female body is smaller than the hardness of the embedded portion of the screw rotation preventing pad, and the screw is stopped.
  • the embedded portion of the rotating pad is embedded in the female body to restrain the rotation of the screw rotation preventing pad relative to the mother body; or the frictional particles are sprayed on the side of the screw rotation preventing pad facing the mother body, and the frictional particles of the screw rotation preventing pad and the mother body generate a sufficient frictional constraint
  • the screw rotation preventing pad rotates relative to the mother body; or the screw rotation preventing pad is fixed on the mother body by the fixing glue to restrain the screw rotation preventing pad from rotating relative to the mother body; the rotation preventing protrusion of the screw is inserted into the rotation preventing pad of the screw rotation preventing pad and the binding screw in the rotation preventing hole Rotating relative to the screw stop pad; the screw is non-rotatably mounted to the parent body.
  • a fastening structure for a fastening joint assembly comprising any one of the three, four, seven or twelve aspects, further comprising a base body and an attachment body; the base body and the attachment body being an integral structure, forming an annular body with a fracture; The two ends of the fracture of the annular body are respectively provided with the opposite first mounting portion and the second mounting portion; the first mounting portion and the second mounting portion are respectively provided with through holes that cooperate with the external thread portion of the screw; The external thread portion is threadedly connected to the lock nut through the through hole in the first mounting portion and the through hole in the second mounting portion, and the screw and the lock nut mount the first mounting portion and the second mounting portion together, the screw Non-rotatably mounted together with the first mounting portion; a side of the first mounting portion facing away from the second mounting portion is provided with a first mounting portion stop hole that is clearance-fitted with the rotation preventing sleeve of the rotation preventing sleeve; Outside the lock nut, the rotation sleeve of the rotation s
  • a crankshaft linkage mechanism comprises a crankshaft, a connecting rod set and a fastening connection assembly;
  • the connecting rod set comprises a connecting rod body, a connecting rod big head cover and a connecting rod big head bearing bush;
  • the fastening connection assembly comprises a screw and a lock nut;
  • the screw comprises The external thread portion and the rotation preventing abutting portion, the rotation preventing abutting portion radially protrudes the external thread portion;
  • the connecting rod body comprises a connecting rod big head and a connecting rod small head, and the connecting rod big head and the connecting rod big head cover are respectively provided with external threads of the screw
  • the fastening connection assembly further comprises a rotation preventing sleeve and a limiting member;
  • the outer circumference of the locking nut is provided with a circumferentially evenly arranged, axial nut rotation preventing portion; and only one shaft is arranged on the rotation preventing sleeve a stop-stop hole,
  • a fastening connection assembly comprising a lock nut; further comprising a U-shaped threaded connection member and a rotation preventing sleeve;
  • the threaded connector comprises a U-shaped threaded connector body, and external threaded portions are provided at both ends of the threaded connector body, external threads
  • the outer diameter of the portion is smaller than the outer diameter of the threaded connector body; the external thread portion of each end corresponds to a lock nut and the rotation sleeve;
  • the outer circumference of the lock nut is provided with a circumferentially evenly arranged nut rotation stop portion, and the shaft center position is provided with a threaded hole that cooperates with the external thread portion; and only one axial rotation stop through hole is provided on the rotation sleeve, and the rotation is stopped.
  • the hole wall of the through hole is provided with a rotation preventing sleeve inner rotation portion matched with the nut rotation preventing portion; and an end surface of the rotation preventing sleeve is axially convexly provided with the restraining rotation preventing sleeve rotating toward the loosening direction of the lock nut
  • the sleeve rotation stop boss, the resisting position of the rotation sleeve of the rotation sleeve is in the circumferential direction and toward the loosening direction of the lock nut;
  • the external threaded portions at the two ends of the threaded connecting member are respectively screwed with the corresponding locking nut, and the rotation preventing portion of the rotation preventing sleeve of the rotation preventing sleeve is installed outside the nut rotation preventing portion of the lock nut, and the rotation preventing sleeve is axially restricted at The nut of the lock nut is outside the rotation stop portion; the nut rotation stop portion and the rotation stop portion of the rotation stop sleeve cooperate to restrain the rotation of the lock nut relative to the rotation sleeve.
  • a fastening connection structure comprising a fastening connection assembly of a twenty-sixth aspect, the fastening connection structure further comprising a connected piece;
  • the connected piece is provided with two through holes which cooperate with the threaded connecting piece, and are oriented on the connected piece
  • the surface of the rotation sleeve is provided with a rotation preventing hole that cooperates with the rotation preventing protrusion of the rotation sleeve;
  • the external thread portions of the two ends of the threaded connecting member are respectively threadedly connected with the lock nut through the corresponding through holes of the connected member, and are connected
  • the two through holes on the piece constrain the threaded connection member to rotate relative to the connected member, the threaded connector body axially resists the side of the connected member, the lock nut axially resists the other side of the connected member, the threaded connecting member and the lock nut Installed together with the connected member; the rotation preventing portion of the rotation preventing sleeve is installed outside the nut rotation
  • the invention is installed outside the lock nut by the rotation preventing sleeve, and the rotation preventing protrusion of the rotation sleeve is inserted into the rotation stop hole of the attachment body or the rotation stop hole of the gasket, and the rotation preventing projection of the rotation sleeve is in the direction of the loosening of the lock nut.
  • One side of the body stop hole or the washer rotation hole resists the rotation of the restraining sleeve relative to the body; the nut rotation stop and the rotation stop of the rotation sleeve cooperate with the constraint lock nut to rotate relative to the rotation sleeve; thus the screw,
  • the lock nut is non-rotatably mounted to the base body and the attachment body.
  • the screw and the lock nut cannot be rotated, and the threaded connection of the screw and the lock nut will not be loosened due to the rotation of the lock nut in the unscrewing direction, so that the screw and the lock nut are kept in the originally required locking position, the screw and the lock
  • the locking force of the threaded connection of the tightening nut is basically unchanged during use; even if the common screw and the lock nut are used to fasten the connection between the base body and the attached body, the screw and the lock nut are in a harsh environment such as severe vibration and high temperature.
  • the locking force of the threaded connection is basically unchanged during use; therefore, the best locking effect is achieved, and the threaded connection failure can be effectively avoided.
  • the height of the rotation preventing boss of the rotation preventing sleeve is greater than the axial length of the rotation preventing portion of the rotation preventing sleeve.
  • the lock nut should be loose and must be rotated in the unscrewing direction. Because the resisting position of the anti-rotation sleeve of the anti-rotation boss is close to the anti-rotation hole or the anti-rotation hole of the anti-rotation sleeve, or the contact with the anti-rotation hole of the attachment, the lock nut When rotating in the unscrewing direction, the rotation preventing boss of the rotation preventing sleeve is resisted by the attachment rotation preventing hole on the side facing the loosening direction of the lock nut, so even the gap between the rotation preventing projection and the attachment rotation preventing hole of the rotation preventing sleeve Cooperate, the anti-rotation sleeve can not be rotated in the direction of loosening or can only be rotated a little in the direction of loosening, and the anti-rotation boss of the rotating sleeve is resisted by the anti-rotation hole of the rotating body, and the locking sleeve cannot be rotated and the locking
  • the nut rotation preventing portion is evenly arranged outside the lock nut, so that the nut rotation preventing portion and the rotation preventing portion in the rotation preventing sleeve can be at least six or more, and the number of the rotation preventing portion in the rotation preventing sleeve
  • the structure of the rotation stop sleeve and the lock nut can be gear shape, spline shape or regular polygon, etc., thereby ensuring that the pre-tightening force of the thread connection meets the use requirement, and the locking effect is good. If the resisting position of the anti-rotation sleeve anti-rotation boss is close to the attachment rotation hole or the gasket rotation prevention hole, the rotation prevention effect is not so good.
  • the fastening connection assembly has a wide application range and is not limited by the hole distance of the hole for mounting the screw on the base body and the attachment body.
  • the fastening structure is more compact and more conformable to the installation and use habits of the common standard fasteners, and can be designed as standard parts.
  • the rotation sleeve is provided with a rotation preventing sleeve of the rotation preventing sleeve, and the auxiliary body is provided with a rotation preventing through hole, and the rotation preventing protrusion of the rotation preventing sleeve cooperates with the auxiliary rotation preventing hole to restrain the rotation of the rotation preventing sleeve
  • the body only needs to be processed or formed on the attached body to form an anti-rotation hole with the anti-rotation sleeve anti-rotation boss.
  • the anti-rotation hole of the attachment body is generally a round hole, and the processing cost is low.
  • the rotation stop is stopped by the rotation preventing washer, and the inserting portion is provided on the side of the rotation preventing washer facing away from the rotation preventing sleeve, and the embedded portion of the rotation preventing washer is embedded in the attachment body to restrain the rotation of the rotation preventing washer relative to the attached body, and does not need to be attached
  • the upper working hole is matched with the rotation preventing sleeve of the rotation preventing sleeve, and the rotation preventing structure for restraining the rotation of the rotating sleeve is not required on the attached body, and the rotation preventing washer can be made into a standard part, thereby greatly reducing the cost.
  • the rotation stop is stopped by the rotation preventing washer, and the gasket rotation preventing boss is arranged on the side of the rotation preventing washer facing away from the rotation preventing sleeve, and the gasket rotation preventing boss is inserted into the attachment rotation preventing hole and the opposite rotation preventing washer is oppositely attached.
  • Rotating, the rotation sleeve and the washer rotation preventing hole cooperate with the gasket rotation preventing hole to restrain the rotation of the rotation sleeve relative to the attachment body, and only need to process or form the attachment rotation hole with the gasket rotation protrusion boss on the attachment body,
  • the body stop hole is generally a round hole, and the processing cost is low.
  • the anti-rotation pad is used to stop the rotation, and the anti-rotation pad is fixed on the attached body to restrain the rotation of the anti-rotation pad relative to the attached body, and it is not necessary to process the hole matched with the anti-rotation sleeve anti-rotation boss on the attached body, There is no need for any anti-rotation structure that restrains the rotation of the rotation sleeve.
  • the anti-rotation gasket can be made into standard parts, thus greatly reducing the cost, and there is no restriction on the material of the attachment body, only the surface of the attachment body is flat, and the cost is special. Low, it will not destroy the surface of the attached body. When the fastening connection assembly is removed, the rotation preventing pad does not need to be separated from the attachment body.
  • the rotation sleeve of the rotation stop sleeve and the rotation stop hole of the attachment body or the rotation stop hole of the gasket cooperate with the rotation of the restraining rotation rotation pad to the opposite body, and it is not necessary to provide a rotation stop outer rotation portion on the outer circumference of the rotation prevention sleeve, and the rotation stop is not required.
  • the rotation preventing hole of the outer rotation preventing sleeve of the outer sleeve of the rotary sleeve is used to restrain the rotation of the rotation preventing sleeve relative to the attachment body; therefore, it is not necessary to process the rotation preventing hole with the rotation preventing sleeve on the attachment body, and it is not required to attach
  • the body is non-rotatably mounted together, and is provided with a rotation stop for the rotation preventing hole of the rotation preventing sleeve outer rotation portion, and it is not necessary to design two or more rotation preventing through holes on the rotation preventing sleeve to restrain the rotation preventing sleeve Rotate.
  • the processing cost is greatly reduced.
  • the rotation stop member is saved, the installation of the rotation stop member at the installation site is omitted, the installation time cost is saved, and the cost is greatly reduced.
  • the gap between the sleeve and the lock nut is generally a clearance fit, which facilitates the installation and removal of the sleeve. Since the anti-rotation sleeve is not installed in the anti-rotation hole and is completely exposed, the installation of the anti-rotation sleeve is convenient and fast; the disassembly of the anti-rotation sleeve can be easily disassembled without the aid of the disassembly tool, and the disassembly is convenient, fast and reliable.
  • the anti-rotation sleeve is provided with a resilient arm, and a limiting portion is arranged at the end of the elastic arm, and the limiting member is no longer required to limit the anti-rotation sleeve.
  • a resilient arm is arranged on the limiting member, and a limiting portion is arranged at the end of the elastic arm; the limiting member and the rotation preventing sleeve are installed together at the factory, and can be made into standard parts, which can be automated in the factory Work, so the installation efficiency is high.
  • the anti-rotation sleeve provided with the elastic arm and the fastening connection assembly including the limiting member provided with the elastic arm eliminate the need to install the limiting member at the installation site of the screw and the lock nut, so the installation is quick and the efficiency is high.
  • the mother body and the attached body are a one-piece structure, forming an annular body with a fracture.
  • the fastening structure of the mechanism is used for connecting other parts, since the screw and the lock nut are not opposed to the first mounting portion and the second mounting portion. Rotation, even in the environment where the fastening structure is subjected to a large force or the fastening structure is in a severe vibration, the screw connection will not be broken due to the rotation of the lock nut in the loosening direction, and the screw and the lock nut are reliably ensured.
  • the second mounting portion and the first mounting portion are mounted together.
  • crankshaft link mechanism using the fastening connection assembly of the present invention the link body and the connecting rod big cover fixed together by the fastening connection assembly, even if the lock nut does not rotate relative to the link body and the screw head cover,
  • the connecting rod body is subjected to a large force, or the crankshaft linkage mechanism is in a vibrating environment, and the threaded connection is not broken due to the rotation of the lock nut in the loosening direction, so that the connecting rod body and the connecting rod big head cover are reliably installed. Together, prevent accidents.
  • a rotation preventing hole is provided on the rotation preventing sleeve, and a rotation preventing boss which is matched with the rotation preventing hole of the rotation preventing sleeve is provided on the attachment body, which is a simple equivalent replacement of the present invention, and of course also belongs to the protection scope of the present invention.
  • the anti-rotation boss is disposed on the attached body, unless it is an injection molded part, a cast part, etc., and the anti-rotation boss is formed together when the attached body is formed. If the anti-rotation boss is processed, the cost is particularly high, so it is not in this patent. Again.
  • Embodiment 1 is a perspective exploded view of the fastening structure of Embodiment 1.
  • FIG. 2 is a cross-sectional view showing the axial position of the fastening screw of the fastening structure of the second embodiment.
  • Fig. 3 is a cross-sectional, schematic cross-sectional view showing the axial position of the fastening structure of the fastening structure of the second embodiment.
  • Embodiment 4 is a perspective exploded view of the fastening structure of Embodiment 2.
  • Fig. 5 is a perspective exploded view showing the fastening structure of the third embodiment.
  • Fig. 6 is a perspective view showing the fastening structure of the third embodiment.
  • Fig. 7 is a cross-sectional view showing the axial position of the fastening screw of the fastening structure of the third embodiment.
  • Fig. 8 is a cross-sectional view showing the axial position of the fastening screw of the fastening structure of the fourth embodiment.
  • FIG. 9 is a perspective exploded view of the fastening joint assembly of Embodiment 4.
  • FIG. 10 is a perspective exploded view of the fastening assembly of Embodiment 5.
  • FIG. 11 is a perspective exploded view of the limiting member and the rotation preventing sleeve of the embodiment 5.
  • Fig. 12 is a cross-sectional, schematic cross-sectional view showing the axial position of the fastening structure of the fastening structure of the fifth embodiment.
  • Figure 13 is a perspective exploded view showing the fastening structure of the embodiment 6.
  • Figure 14 is a perspective exploded view of the lock nut and the rotation sleeve of Embodiment 6.
  • Fig. 15 is a cross-sectional view showing the axial position of the fastening screw of the fastening structure of the sixth embodiment.
  • Figure 16 is a perspective exploded view of the lock nut and the rotation sleeve of the seventh embodiment.
  • Figure 17 is a perspective exploded view showing the fastening structure of the eighth embodiment.
  • Figure 18 is a cross-sectional view showing the axial position of the fastening screw of the fastening structure of the eighth embodiment.
  • Fig. 19 is a perspective exploded perspective view showing the fastening structure of the ninth embodiment.
  • Figure 20 is a cross-sectional view showing the axial position of the fastening screw of the fastening structure of the ninth embodiment.
  • Figure 21 is a perspective view showing the fastening structure of the embodiment 10.
  • Figure 22 is a perspective exploded view showing the fastening structure of the embodiment 10.
  • Figure 23 is a cross-sectional view showing the fastening joint structure of the embodiment 10 taken along the axial center of the screw.
  • Figure 24 is a perspective view showing the fastening structure of the eleventh embodiment.
  • Figure 25 is a perspective exploded view of the fastening assembly of the embodiment 11.
  • Figure 26 is a cross-sectional view showing the fastening joint structure of the embodiment 12 taken along the axial center of the screw.
  • Figure 27 is a perspective exploded view showing the fastening structure of the embodiment 12.
  • Figure 28 is a cross-sectional view showing the fastening joint structure of the embodiment 13 taken along the axial center of the screw.
  • Figure 29 is a perspective exploded view showing the fastening structure of the embodiment 13.
  • Figure 30 is a perspective exploded view showing the fastening structure of the embodiment 14.
  • Figure 31 is a cross-sectional, schematic cross-sectional view showing the axial position of the fastening structure of the fastening structure of the embodiment 14.
  • Figure 32 is a perspective exploded view showing the fastening structure of the fifteenth embodiment.
  • Figure 33 is a cross-sectional view, taken along the axial center of the screw of the fastening structure of the fifteenth embodiment.
  • Figure 34 is a cross-sectional, schematic cross-sectional view showing the axial position of the fastening structure of the fastening structure of the embodiment 16.
  • Figure 36 is a perspective exploded perspective view showing the fastening structure of the embodiment 16.
  • Figure 37 is a cross-sectional, schematic cross-sectional view showing the axial position of the fastening structure of the fastening structure of the embodiment 17.
  • Embodiment 38 is a perspective exploded view of the screw and the screw rotation preventing pad of Embodiment 17.
  • Figure 41 is a perspective exploded view of the fastening assembly of the embodiment 18.
  • Figure 42 is a cross-sectional, schematic cross-sectional view showing the axial position of the fastening structure of the fastening structure of the embodiment 18.
  • Figure 43 is a perspective exploded view of the fastening assembly of Embodiment 19.
  • Figure 44 is a cross-sectional, schematic cross-sectional view showing the axial position of the fastening structure of the fastening structure of the embodiment 19.
  • Fig. 45 is a perspective exploded view showing the lock nut and the rotation preventing sleeve of the embodiment 20;
  • Figure 46 is a cross-sectional view, taken along the axial center of the U-shaped threaded connection of the fastening structure of the embodiment 20.
  • Figure 47 is a perspective exploded view of the fastening joint assembly of Embodiment 21.
  • Figure 48 is a cross-sectional view, taken along the axial center of the screw of the fastening structure of the embodiment 21.
  • Fig. 49 is a partially enlarged schematic view showing the area A of Fig. 48;
  • Figure 50 is a perspective view of the anti-rotation sleeve and the elastic limiting member of Embodiment 22.
  • Figure 51 is a cross-sectional view, taken along the axial center of the screw of the fastening structure of the embodiment 22.
  • Figure 52 is a partially enlarged schematic view showing the area A of Figure 51.
  • Figure 53 is a perspective view showing the stopper of Embodiment 23.
  • Figure 54 is a perspective view showing the stopper of Embodiment 24.
  • Fig. 55 is a perspective exploded view showing the crankshaft link mechanism of the twenty-fifth embodiment.
  • Figure 56 is a schematic cross-sectional view showing the crankshaft link mechanism of Embodiment 25 taken along the axis of the two screws.
  • a fastening connection assembly includes a screw 1, a lock nut 2, a rotation preventing sleeve 3, and a limiting member, and the limiting member is a resisting nut 4.
  • the lock nut 2 has a stepped shape and includes a positive hexagonal clamping portion 5 and an outer gear-shaped rotation preventing portion 6, and the rotation preventing portion 6 projects radially from the clamping portion 5.
  • a clamping portion 5 is provided for facilitating the wrench to clamp the lock nut 2 when the lock nut 2 is attached and detached.
  • a plurality of triangular teeth uniformly arranged in the circumferential direction are provided on the outer circumference of the rotation preventing portion 6, and one triangular tooth forms a nut rotation preventing portion 7, and a threaded through hole 8 is provided at the axial center position.
  • the screw 1 includes an external thread portion 9 that cooperates with the threaded through hole 8 of the lock nut 2, a cylindrical light rod portion 10, and a right hexagonal head portion 11, and the head portion 11 projects axially toward the end surface of the light rod portion 10 to prevent rotation. Boss 12.
  • the rotation preventing sleeve 3 has an annular shape, and the axial center position of the rotation preventing sleeve 3 is provided with an axial internal gear-shaped rotation preventing through hole 13 that is gap-fitted with the rotation preventing portion 6 of the external gear shape, and the rotation preventing through hole 13 is A plurality of evenly circumferentially distributed triangular grooves are provided in the wall of the hole, and a single triangular groove on the wall of the hole of the stop through hole 13 forms a rotation preventing sleeve inner rotation portion 23 which cooperates with the nut rotation preventing portion 7.
  • a cylindrical anti-rotation boss 14 is axially projected on one end surface of the rotation preventing sleeve 3, and the abutting position of the rotation preventing boss 14 is in the circumferential direction and toward the screw unscrewing direction.
  • the resisting nut 4 is stepped, and the axial position of the resisting nut 4 is provided with a threaded through hole 21 that cooperates with the external threaded portion 9 of the screw 1, and communicates with the threaded through hole 21 to avoid the clamping portion of the lock nut 2
  • the fastening connection structure includes a fastening connection assembly, a base body 16, and an attachment body 17.
  • the attachment body 17 is provided with a through hole 18 which cooperates with the external thread portion 9 of the screw 1.
  • the side of the attachment body 17 facing away from the base body 16 is provided with a rotation preventing hole which is clearance-fitted with the rotation preventing boss 14 of the lock nut 2. twenty two.
  • the base body 16 is provided with a through hole 19 that engages with the polished rod portion 10 of the screw 1, and a circular rotation preventing hole 20 that is in clearance engagement with the rotation preventing boss 12 of the screw 1 is provided on the side of the parent body 16 facing away from the attachment body 17.
  • the externally threaded portion 9 of the screw 1 sequentially passes through the through hole 20 in the female body 16, the through hole 18 in the attached body 17, and the rotation preventing boss 12 of the screw 1 is inserted into the circular rotation preventing hole 20 of the female body 16, the screw 1 and the lock
  • the tightening nut 2 is screwed, the head 11 of the screw 1 axially abuts against the body 16, and the lock nut 2 axially abuts the appendage 17, and the screw 1 and the lock nut 2 fasten the base 16 and the appendage 17 together.
  • the rotation preventing boss 12 of the screw 1 is inserted into the circular rotation preventing hole 20 of the female body 16 to restrain the screw 1 from rotating relative to the female body 16.
  • the rotation preventing sleeve 3 is mounted outside the rotation preventing portion 6 of the lock nut 2, and the abutting position of the rotation preventing boss 14 is close to the rotation preventing hole 22 of the attachment body 17 or is in contact with the rotation preventing circular hole 22, and the nut of the triangular tooth is stopped.
  • the portion 7 is inserted into the rotation preventing sleeve 23 of the corresponding triangular groove, and the rotation preventing boss 14 of the rotation preventing sleeve 3 is inserted into the rotation preventing hole 22 of the attachment body 17, and the resisting nut 4 is installed outside the screw 1.
  • the clamping portion 5 of the screw 1 is placed in the hollow hole 15 of the resisting nut 4, and the resisting nut 4 is axially restrained from the side of the rotation preventing sleeve 3 facing away from the attachment body 17.
  • the rotation preventing boss 14 is resisted by the rotation preventing hole 22 of the attachment body 17 on the side facing the unscrewing direction of the lock nut 2, and the rotation preventing sleeve 3 is mounted outside the lock nut 2 to jointly restrain the rotation preventing sleeve 3 relative to the body 17
  • Rotating, the nut rotation preventing portion 7 and the rotation preventing sleeve inner rotation preventing portion 23 cooperate to restrain the rotation preventing sleeve 3 from rotating relative to the lock nut 2, and the mother body 16 and the attachment body 17 are not relatively rotated, so the screw 1 and the lock nut 2 are non-rotatably It is mounted with the parent body 16 and the appendage 17.
  • the stopper is a snap ring 31.
  • the snap ring includes an annular non-closed snap ring body, and three resisting protrusions are protruded radially inwardly on the inner side surface of the snap ring body, and the inner sides of the three resisting convex portions are distributed on the same circumference of the common body of the snap ring body On the surface.
  • the screw 32 includes a head portion 33 which is sequentially arranged, a cylindrical light rod portion 34, a male screw portion 35, a cylindrical mounting portion 36, and a circumferential locking groove 37 is provided in the mounting portion 36.
  • the clamping portion 39 of the lock nut 38 projects radially from the rotation stop portion 40.
  • the anti-rotation sleeve 41 is further provided with a cutout hole 43 which is coaxial with the anti-rotation through hole 42 and is used to avoid the clamping portion 39 of the lock nut 38.
  • the aperture of the cutout hole 43 is larger than the through-hole. The aperture of 42.
  • the fastening structure is different from that of the first embodiment in that the resisting projection of the snap ring 31 is axially restrained by the elastic deformation in the latching groove 37 of the mounting portion 36 of the screw 32 to the side of the anti-rotation sleeve 41 facing away from the attachment 44.
  • the clamping portion 39 of the lock nut 38 is placed in the cutout hole 43 of the rotation preventing sleeve 41.
  • the stopper is a snap ring 51.
  • the lock nut 52 is a hexagonal nut.
  • the six planes of the outer circumference of the lock nut 52 form a circumferentially arranged six nut rotation preventing portion 53.
  • the shaft center position is provided with a threaded through hole 54.
  • the outer circumference of the lock nut 52 is provided.
  • a card slot 55 that cooperates with the snap ring 51 in the circumferential direction.
  • the axial center of the rotation preventing sleeve 56 is provided with an axial rotation preventing through hole 57 that engages with the lock nut 52, and a rotation preventing projection 58 is axially projected on one end surface of the rotation preventing sleeve 56.
  • the hole wall of the through hole 57 is an intersecting structure in which two identical hexagonal holes of the same structure are rotated by 30°, and twelve pointed grooves are formed on the wall of the hole of the through hole 57, and each of the pointed grooves is formed by
  • the two intersecting planes of the regular hexagonal holes are formed, and the two intersecting planes of the pointed recessed grooves form the anti-rotation sleeve inner rotation preventing portion 59 that cooperates with the nut rotation preventing portion 53 of the lock nut 52.
  • the snap ring 51 includes a body of a non-closed annular snap ring 51.
  • the outer circumference of the snap ring body 63 is evenly distributed with six radially protruding limiting ribs 61.
  • the ends of the main body of the card slot 55 are provided with disassembly.
  • the limiting rib 61 radially protrudes from the outer circumference of the locking groove 55 on the locking nut 52.
  • the maximum outer diameter of the limiting rib 61 is larger than the maximum diameter of the locking through hole 57; the inner circumference of the snap ring body 63 and the locking
  • the outer circumference of the bottom of the slot 55 of the nut 52 is fitted.
  • the retaining sleeve 56 is mounted on the outside of the lock nut 52.
  • the snap ring body 63 is mounted in the latching groove 55 of the lock nut 52.
  • the limiting rib 61 of the snap ring 51 abuts against the side of the retaining sleeve 56 facing away from the attachment 62.
  • the end faces axially limit the side of the anti-rotation sleeve 56 away from the attachment 62.
  • the special pliers tool is used to extend into the two disassembling through holes 60, and then the snap ring 51 is opened outward, and the snap ring 51 can be removed from the slot 55 of the lock nut 52. come out.
  • a fastening connection assembly includes a screw 71 and a lock nut. 72, stop sleeve 73, no limit parts.
  • the clamping portion 74 of the lock nut 72 radially protrudes from the rotation preventing portion 75.
  • the rotation preventing sleeve 73 includes an annular rotation preventing sleeve body 86.
  • the center of the rotation preventing sleeve body 86 is provided with a central through hole 76, and three elastic arms 77 are evenly distributed on the wall of the central through hole 76.
  • Each of the resilient arms 77 includes a horizontal projection 78 formed radially inward from the bore wall of the central through bore 76, a U-shaped resilient arm 79 axially upwardly and then radially inwardly and axially downwardly formed; a U-shaped resilient arm The end portion of the 79 portion is formed inwardly inwardly in the stopper portion 80, and the inner surface of the three stopper portion 80 is provided with a plurality of uniform shapes of the inner gear that partially engages with the rotation preventing portion 75 of the outer shape of the lock nut 72.
  • a circumferentially arranged triangular groove, a single triangular groove on the inner side surface of the limiting portion 80 is formed into a rotation preventing sleeve inner rotation preventing portion 82 engaged with the nut rotation preventing portion 81, and a triangular shape on the inner side surface of the three limiting portions 80
  • the groove wall of the groove is enclosed to form a non-closed through hole 83.
  • a rotation preventing projection 84 is axially projected from the end surface of the rotation preventing sleeve 73 away from the U-shaped elastic arm 79.
  • the outer circumference of the rotation stop portion 75 and the nip portion 74 face the end surface facing the rotation stop portion 75 to form a stopper accommodation space for accommodating the stopper portion 80.
  • the fastening connection structure is different from that of the first embodiment in that the rotation preventing portion 75 of the lock nut 72 faces the attachment 85.
  • the U-shaped elastic arm 79 of the rotation preventing sleeve 73 is placed outside the rotation preventing portion 75 of the lock nut 72 by elastic deformation, and the rotation preventing boss 84 of the rotation preventing sleeve 73 is inserted into the rotation preventing hole of the attachment body 85, and the rotation preventing sleeve
  • the stopper portion 80 of the 73 is axially restrained by the grip portion 74 of the lock nut 72 toward the end surface of the rotation preventing portion 75 against the side of the rotation preventing sleeve 73 facing away from the attachment 85.
  • the lock nut 101 sequentially includes a clamping portion 102, a rotation preventing portion 103, and a cylindrical abutting portion 104.
  • the rotation preventing portion 103 radially protrudes from the clamping portion. 102 and the abutting portion 104 for avoiding the air.
  • the limiting member is a plastic member, and includes a ring-shaped limiting member body 105.
  • the outer peripheral shape of the limiting member body 105 is similar to the outer shape of the rotation preventing sleeve 106, and the inner diameter of the limiting member body 105 is slightly larger than the locking nut 101.
  • Three recesses 114 are formed in the central through hole 113 of the limiting body 105, and three elastic arms 107 are formed on the bottom surface of each of the recesses 114 in the axial direction and then axially on the same side.
  • a limiting portion 108 parallel to the limiting member body 105 is formed in the axial direction along the end portion of each of the elastic arms 107, and the limiting portion 108 radially protrudes from the hole wall of the central through hole 113.
  • Six limiting posts 109 are protruded from the same end surface of the limiting body 105, and a resisting ring 110 is provided at the end of the limiting post 109.
  • the limiting post 109 and the limiting portion 108 are placed on the same side of the limiting body 105.
  • the outer circumference of the abutting portion 104 and the rotation preventing portion 103 form a stopper receiving space for accommodating the stopper portion 108 toward the end surface of the abutting portion 104.
  • the anti-rotation sleeve 106 is a metal piece, and in the circumferential direction of the hole wall of the anti-rotation through hole of the anti-rotation sleeve 106, three cutout grooves 111 of the elastic arm 107 of the air-tight limiting member are uniformly arranged, and six of the anti-rotation sleeves 106 are provided on the anti-rotation sleeve 106.
  • a circumferentially distributed axial mounting hole 112 that cooperates with the limiting post 109 of the limiting member is provided with three cutouts 111 for taking out the limiting member on the outer circumference of the rotation preventing sleeve 106.
  • the minimum inner diameter of the three limiting portions 108 of the limiting member is smaller than the minimum inner diameter of the through-stopping hole.
  • the rotation preventing sleeve 106 is placed in the injection mold of the forming limit member, and the limiting member is injection molded, so that the limiting post 109 of the limiting member passes through the mounting hole 112 of the rotation preventing sleeve 106 and passes through the limiting column.
  • the resisting ring 110 of the 109 fixes the limiting member on the rotation preventing sleeve 106, and the elastic arm 107 is placed in the cutout groove 111 of the rotation preventing sleeve 106, and the limiting portion 108 radially protrudes from the rotation preventing through hole.
  • the rotation sleeve 106 is mounted outside the lock nut 101 together with the stopper member.
  • the rotation sleeve body 115 is mounted outside the rotation stop portion 103 of the lock nut 101, and the stopper portion 108 of the stopper member is elastically deformed by the elastic arm 107.
  • the rotation stop portion 103 is axially restrained toward the side of the abutment portion 104 facing away from the attachment body 114 toward the end surface of the abutment portion 104.
  • the outer circumference of the rotation preventing portion 122 of the lock nut 121 is provided with a plurality of trapezoidal teeth uniformly arranged in a circumferential direction, and one trapezoidal tooth forms a nut rotation preventing portion 123. .
  • the rotation sleeve 124 includes an annular rotation sleeve body 125.
  • the center of the rotation sleeve body 125 is provided with a central through hole 126, and the same circumference is extended along the outer circumference and the inner circumference of the rotation sleeve body 125.
  • the outer convex ring 127 and the inner convex ring 128 have three limiting portions 129 protruding inwardly along the top surface of the inner convex ring 128 on the inner convex ring 128, along the circumferential sides of each of the limiting portions 129, with the center
  • the center of the through hole 126 is provided with a radial straight groove 130 for cutting the inner convex ring 128 and partially cutting the rotation preventing sleeve body 125, and the inner convex ring 128 and the rotation preventing sleeve body 125 connected to the limiting portion 129.
  • a resilient arm 131 is formed.
  • the groove forms a rotation preventing sleeve inner rotation preventing portion 132 that engages with the nut rotation preventing portion 123.
  • the groove wall of the trapezoidal groove on the inner side surface of the three limiting portions 129 is closed to form a non-closed rotation preventing through hole 133.
  • a rotation preventing boss 134 is axially projected between a side of the rotation preventing sleeve body 125 facing the inner convex ring 128, the inner convex ring 128 and the outer convex ring 127.
  • the outer circumference of the abutting portion 135 and the rotation preventing portion 122 are formed toward the end surface facing the abutting portion 135 to form a stopper receiving space for accommodating the stopper portion 129.
  • the anti-rotation sleeve inner rotation preventing portion 132 of the rotation preventing sleeve 124 is disposed outside the rotation preventing portion 122 of the lock nut 121, and the elastic arm 131 of the rotation preventing sleeve 124 is placed outside the resisting portion 135 of the lock nut 121 by elastic deformation and stopped.
  • the rotation preventing boss 134 of the rotary sleeve 124 is inserted into the rotation preventing hole 137 of the attachment body 136, and the stopper portion 129 of the rotation preventing sleeve 124 is resisted by the rotation preventing portion 122 of the lock nut 121 toward the end surface of the resisting portion 135.
  • the sleeve 124 is axially offset from one side of the attachment 136.
  • the outer circumference of the rotation preventing portion 151 has a spline shape, and the outer circumference forms five projections, and each projection forms a nut rotation preventing portion 152.
  • the hole wall of the through hole 153 is a spline-shaped groove that engages with the spline-shaped outer circumference of the rotation preventing portion 151, and the single groove on the hole wall of the rotation preventing hole 153 forms a match with the nut rotation preventing portion 152.
  • the lock nut 171 is a standard outer hex nut.
  • the hole wall of the through hole 172 is an intersecting structure in which two identical hexagonal holes of the same structure are rotated by 30°, and twelve pointed grooves are formed on the hole wall of the through hole 172, and each of the pointed grooves is formed by
  • the two intersecting planes of the regular hexagonal holes are formed, and the two intersecting planes of the pointed recessed grooves form the anti-rotation sleeve inner rotation preventing portion 175 that cooperates with the nut rotation preventing portion 174 of the rotation preventing portion 173.
  • the outer circumference of the resisting nut 176 is a regular hexagon.
  • the axial position of the resisting nut 176 is provided with a threaded through hole 179 that engages with the externally threaded portion 178 of the screw 177, and communicates with the threaded through hole 179 to avoid the hollow hole 181 of the clamping portion 180 of the lock nut 171.
  • the aperture of the cutout 181 is larger than the aperture of the threaded hole.
  • the fastening connection structure includes a fastening connection assembly, a body of the unitary structure, and an attachment.
  • the parent body and the appendage form a fractured annular body 182; at both ends of the fracture of the annular body 182, a first mounting portion 183 and a second mounting portion 184 that face and are parallel are provided in the same direction.
  • the first mounting portion 183 is provided with a through hole 186 that cooperates with the polished rod portion 185 of the screw 177.
  • the side of the first mounting portion 183 facing away from the second mounting portion 184 is provided with a clearance fit with the anti-rotation boss 187 of the screw 177.
  • the round stop hole 188 is provided.
  • a through hole 189 is formed in the second mounting portion 184 to engage with the external thread portion 178 of the screw 177, and is disposed on the side of the second mounting portion 184 away from the first mounting portion 183 with the lock nut 171.
  • the rotary boss 190 has a clearance-fitted circular hole 191.
  • the external thread portion 178 of the screw 177 sequentially passes through the through hole 186 in the first mounting portion 183, the through hole 189 in the second mounting portion 184, and the rotation preventing boss 187 of the screw 177 is inserted into the circular rotation of the first mounting portion 183.
  • the screw 177 is screwed to the lock nut 171, the head of the screw 177 axially resists the first mounting portion 183, the lock nut 171 axially resists the second mounting portion 184, and the screw 177 and the lock nut 171 are A mounting portion 183 is fastened to the second mounting portion 184.
  • the rotation preventing boss 187 of the screw 177 is inserted into the circular rotation preventing hole 188 of the first mounting portion 183 to rotate the restraining screw 177 with respect to the first mounting portion 183.
  • the rotation preventing sleeve 192 is mounted outside the lock nut 171, the nut rotation preventing portion 174 of the triangular tooth is inserted into the rotation preventing sleeve 175 of the corresponding triangular groove, and the rotation preventing boss 190 of the rotation preventing sleeve 192 is inserted into the second rotation.
  • the resisting nut 176 is mounted on the external thread portion 178 of the screw 177, and the lock nut 171 is placed in the cutout hole 181 of the resisting nut 176, and the resisting nut 176 is opposed to the rotation preventing sleeve 192.
  • One side of the second mounting portion 184 is axially constrained.
  • the rotation preventing boss 190 of the rotation preventing sleeve 192 and the rotation preventing hole 191 of the second mounting portion 184 cooperate with the rotation preventing sleeve 192 to rotate relative to the second mounting portion 184, and the nut rotation preventing portion 174 and the rotation preventing sleeve inner rotation preventing portion 175
  • the first rotation preventing member 183 and the second mounting portion 184 are not rotated relative to each other, so that the screw 177 and the lock nut 171 are non-rotatably coupled to the first mounting portion 183 and the second mounting portion. 184 is installed together.
  • a fastening connection structure includes a fastening connection assembly, a base 201, and an attachment body 202.
  • the fastening connection assembly includes a screw 203, a lock nut 204, a rotation sleeve 205, an expansion sleeve 206 of a one-piece structure, and a resist nut 207.
  • the screw 203 includes a resisting portion 208, a polished rod portion 209, and a male thread portion 210 which are sequentially distributed.
  • the resisting portion 208 radially protrudes from the external thread portion 210, and the resisting portion 208 is provided with a driving taper surface 211 for driving the expansion sleeve 206 to expand.
  • the lock nut 204 is a standard outer hex nut, and the six planes of the outer circumference of the lock nut 204 form six nut rotation preventing portions 212 arranged circumferentially, and the threaded through holes 213 are provided at the axial center.
  • the rotation sleeve 205 is annular, and the axial center of the rotation sleeve 205 is provided with an axial rotation preventing through hole 214 that cooperates with the lock nut 204, and a rotation stop is axially protruded on one end surface of the rotation sleeve 205.
  • the boss 215 and the abutting position of the rotation preventing boss 215 are oriented in the circumferential direction toward the screw unscrewing direction.
  • the hole wall of the through hole 214 is an intersecting structure in which two identical hexagonal holes of the same structure are rotated by 30°, and twelve pointed grooves are formed on the wall of the hole of the stop through hole 214, and each of the pointed grooves is formed by
  • the two intersecting planes of the regular hexagonal holes are formed, and the two intersecting planes of the pointed recessed grooves 11 form the anti-rotation sleeve inner rotation preventing portions 216 that cooperate with the nut rotation preventing portions 212 of the lock nut 204.
  • the outer circumference of the resisting nut 207 is a regular hexagon.
  • the axial position of the resisting nut 207 is provided with a threaded through hole 219 that engages with the externally threaded portion 210 of the screw 203, and communicates with the threaded through hole 219 to avoid the hollow hole 218 of the clamping portion 217 of the lock nut 204.
  • the aperture of the cutout 218 is larger than the aperture of the threaded aperture.
  • the expansion sleeve 206 has a circular tubular shape, and a slit 209 for expanding the expansion sleeve 206 when the expansion sleeve 206 is expanded is provided at the lower end of the expansion sleeve 206.
  • the attachment body 202 is provided with a through hole 210 that cooperates with the outer periphery of the expansion sleeve 206 and the abutting portion 208 of the screw 203.
  • a rotation preventing hole 211 is provided on the side of the attachment body 202 facing away from the base 201 in a clearance fit with the rotation preventing boss 215. .
  • the female body 201 is provided with a blind hole 212 that cooperates with the outer circumference of the expansion sleeve 206 and the abutting portion 208 of the screw 203.
  • the external thread portion 210 of the screw 203 passes through the expansion sleeve 206.
  • the resisting portion 208 of the screw 203 and the partial expansion sleeve 206 are mounted in the blind hole 212 of the female body 201.
  • the external thread portion 210 of the screw 203 passes through the through hole on the attachment body 202. 210 is threadedly connected to the threaded hole of the lock nut 204.
  • the driving cone surface 211 and the hole wall of the through hole on the expansion sleeve 206 are provided with one end of the slot 209 to expand the expansion sleeve 206, and the expansion between the expansion sleeve 206 and the base 201
  • the tightening force is used to fix the expansion sleeve 206 in the blind hole 212 of the female body 201.
  • the resisting portion 208 of the screw 203 is axially resisted by the expansion sleeve 206.
  • the lock nut 204 axially resists the attachment body 202, the screw 203, the expansion sleeve 206 and the lock.
  • the tightening nut 204 securely connects the parent body 201 and the appendage 202 together.
  • the rotation preventing sleeve 205 is installed outside the lock nut 204, and the resisting position of the rotation preventing boss 215 is close to the rotation preventing hole 211 of the attachment body 202 or is in contact with the rotation preventing hole 211, and the rotation preventing sleeve of the rotation preventing sleeve 205 is stopped.
  • the portion 216 is disposed outside the nut rotation preventing portion 212 of the lock nut 204 and the rotation preventing boss 215 of the rotation preventing sleeve 205 is inserted into the rotation preventing hole 211 of the attachment body 202.
  • the resisting nut 207 is mounted on the external thread portion 210 of the screw 203.
  • the lock nut 204 protruding from the anti-rotation sleeve 205 is placed in the hollow hole 218 of the resisting nut 207, and the resisting nut 207 is axially restrained from the side of the anti-rotation sleeve 205 facing away from the attachment body 202.
  • the rotation preventing sleeve inner rotation preventing portion 216 and the nut rotation preventing portion 212 cooperate with the restriction lock nut 204 to rotate relative to the rotation preventing sleeve 205, and the rotation preventing projection 215 is attached to the side of the locking nut 204 by the attachment body 202.
  • the round hole 211 is resisted, and the rotation sleeve 205 is mounted outside the lock nut 204 to jointly restrain the rotation of the rotation sleeve 205 relative to the attachment body 202.
  • the lock nut 204 is non-rotatably mounted with the screw 203, the expansion sleeve 206, the base 201, and the appendage 202.
  • a fastening connection assembly includes a screw 231, a lock nut 232, and a rotation preventing sleeve 233.
  • the lock nut 232 has a stepped shape and includes a positive hexagonal clamping portion 234 and an outer gear-shaped rotation preventing portion 235.
  • the rotation preventing portion 235 radially protrudes from the clamping portion 234.
  • a clamping portion 234 is provided to facilitate the clamping of the locking nut 232 by the wrench when the locking nut 232 is attached and detached.
  • a plurality of triangular teeth uniformly arranged in the circumferential direction are provided on the outer circumference of the rotation preventing portion 235, and one triangular tooth forms a nut rotation preventing portion 236, and a threaded through hole 238 is provided at the axial center position.
  • the screw 231 includes an external thread portion 239 that cooperates with the threaded through hole 238 of the lock nut 232 and a right hexagonal head portion 241 that protrudes axially toward the end surface of the external thread portion 239 by a rotation preventing boss 242.
  • the rotation preventing sleeve 233 has an annular shape, and the axial center position of the rotation preventing sleeve 233 is provided with an axial rotation preventing through hole 243 which is engaged with the lock nut 232, and an axial projection is formed on one end surface of the rotation preventing sleeve 233.
  • the turning boss 244 has a resisting position of the rotation preventing boss 244 in the circumferential direction and toward the screw unscrewing direction.
  • the hole wall of the through hole 243 is an inner gear shape that cooperates with the outer gear shape of the lock nut 235 of the lock nut 232.
  • the hole wall of the rotation stop hole 243 is provided with a plurality of uniform circumferential juxtaposed triangular grooves.
  • a single triangular groove on the wall of the hole of the through hole 243 forms a rotation preventing sleeve inner rotation portion 237 which cooperates with the nut rotation preventing portion 236.
  • the hole wall of the rotation preventing sleeve 233 is uniformly distributed in three semicircles for accommodating The glue tank 246 of the fixing glue 245.
  • the fastening connection structure includes a fastening connection assembly, a base 248, and an attachment 247.
  • the attachment body 247 is provided with a through hole 251 that cooperates with the external thread portion 239 of the screw 231.
  • a rotation preventing hole 252 that is in clearance engagement with the rotation preventing boss 244 is provided.
  • the base 248 is provided with a through hole 250 that cooperates with the external thread portion 239 of the screw 231.
  • a side of the base 248 facing away from the attachment 247 is provided with a circular rotation hole 249 that is in clearance with the rotation preventing boss 242.
  • the external thread portion 239 of the screw 231 sequentially passes through the through hole 250 in the female body 248, the through hole 251 in the attached body 247, and the rotation preventing boss 242 of the screw 231 is inserted into the circular rotation preventing hole 249 of the female body 248, the screw 231 and the lock
  • the nut 232 is screwed.
  • the head 241 of the screw 231 axially resists the base 248.
  • the lock nut 232 axially resists the attachment 247.
  • the screw 231 and the lock nut 232 fasten the base 248 and the attachment 247 together.
  • the rotation preventing boss 242 of the screw 231 is inserted into the circular rotation preventing hole 249 of the female body 248 to restrain the screw 231 from rotating relative to the female body 248.
  • the rotation preventing sleeve 233 is installed outside the lock nut 232, and the resisting position of the rotation preventing boss 244 is close to the rotation preventing hole 252 of the attachment body 247 or is in contact with the rotation preventing hole 252, and the rotation preventing sleeve of the rotation preventing sleeve 233 is stopped.
  • the portion 237 is disposed outside the nut rotation preventing portion 236 of the lock nut 232 and the rotation preventing boss 244 of the rotation preventing sleeve 233 is inserted into the rotation preventing hole 252 of the attachment body 247, and the nut adjacent to the glue groove 246 in the glue groove 246.
  • the fixing glue 245 is filled between the gap of the rotation preventing portion 236 and the rotation preventing portion 237 of the rotation preventing sleeve, and the fixing rubber 245 fixes the rotation preventing sleeve 233 to the outside of the locking nut 232 to axially limit the rotation preventing sleeve 233.
  • the rotation preventing boss 244 is resisted by the rotation preventing hole 252 of the attachment body 247 on the side facing the unscrewing direction of the lock nut 232, and the rotation preventing sleeve 233 is mounted outside the lock nut 232 to jointly restrain the rotation preventing sleeve 233 with respect to the attached body 247.
  • Rotating, the nut rotation preventing portion 236 and the rotation preventing sleeve inner rotation preventing portion 237 cooperate with the rotation preventing sleeve 233 to rotate relative to the locking nut 232, and the mother body 248 and the attachment body 247 are not relatively rotated, so the screw 231 and the lock nut 232 are non-rotatably It is mounted with the parent body 248 and the appendage 247.
  • the screw 300 includes a head portion 301, a cylindrical optical rod portion 302, and a male screw portion 303 which are sequentially arranged.
  • the lock nut 304 includes a clamping portion 305, a rotation preventing portion 306, and a cylindrical mounting portion 307 which are sequentially arranged.
  • the rotation preventing portion 306 radially protrudes from the mounting portion 307, and the clamping portion 305 radially protrudes from the rotation preventing portion 306.
  • a card slot 308 is provided on the mounting portion 307 in the circumferential direction.
  • the fastening structure is different from that of the first embodiment in that the resisting projection 310 of the snap ring 309 is elastically deformed into the slot 308 of the mounting portion 307 of the lock nut 304 to the side of the rotation preventing sleeve 311 facing away from the attachment 312. Axial limit.
  • the fastening joint assembly further includes a screw rotation preventing piece 330.
  • the screw 331 includes a stopper portion 332 that is sequentially arranged, an abutment rotation preventing portion 333 whose outer circumference is an external gear shape, a polished rod portion 334, and a male screw portion 335.
  • the limiting portion 332 radially protrudes against the rotation preventing portion 333, and the resisting rotation portion 333 radially protrudes from the polished rod portion 334.
  • a plurality of triangular teeth uniformly arranged in the circumferential direction are provided on the outer circumference of the resisting rotation preventing portion 333, and one triangular tooth forms a screw rotation preventing portion 336.
  • the screw rotation preventing piece 330 is a square having rounded corners, and the center position of the screw rotation preventing piece 330 is provided with an inner gear-shaped gasket rotation preventing through hole 337 which is engaged with the outer gear-shaped abutting rotation preventing portion 333 of the screw 331, and the pad
  • a plurality of evenly circumferentially distributed triangular grooves are formed in the wall of the hole-stopping hole 337, and a pointed-shaped embedded edge 344 is protruded from the bottom surface of the spacer on opposite sides of the screw-stopping piece 330. This method is not good enough).
  • a single triangular groove on the wall of the gasket stop through hole 337 forms a gasket stop portion 338 that cooperates with the screw stop portion 336.
  • the external thread portion 335 of the screw 331 sequentially passes through the gasket rotation preventing through hole 337 of the screw rotation preventing piece 330, the through hole 340 of the female body 339, and the through hole 342 of the attachment body 341 to be screwed with the lock nut 343, and the screw 331
  • the resisting rotation preventing portion 333 is disposed in the gasket rotation preventing through hole 337 of the screw rotation preventing piece 330, and the limiting portion 332 of the screw 331 abuts against the screw rotation preventing piece 330 toward the end surface of the resisting rotation preventing portion 333, and the screw rotation preventing piece 330
  • the inserting edge 344 is embedded in the mother body 339 and generates a static friction constraint.
  • the screw rotation preventing piece 330 is rotated relative to the mother body 339.
  • the screw rotation preventing portion 336 of the triangular tooth is inserted into the triangular groove.
  • the rotation preventing portion 338 of the triangular groove supports the rotation of the screw 331 with respect to the mother body 339. It is rotatably mounted with the mother body 339.
  • the fastening connection assembly further includes a rotation preventing pad 360.
  • the axial center position of the rotation preventing pad 360 is provided with a circular center through hole 363 which is in clearance with the external thread portion 362 of the screw 361.
  • the end surface of the rotation preventing pad 360 is provided with a clearance fit with the rotation preventing boss 365 of the rotation preventing sleeve 364.
  • the shim rounds the through hole 366.
  • a rotation preventing pad boss 367 is axially projected on the outer peripheral end surface of the circular center through hole 363.
  • the maximum outer diameter of the anti-rotation pad 360 is greater than the maximum inner diameter of the anti-rotation through hole 368 of the anti-rotation sleeve 364.
  • the side of the attachment body 369 facing away from the mother body 370 is provided with a rotation preventing hole 371 which is in clearance fit with the rotation preventing pad boss 367 of the rotation preventing pad 360.
  • the external thread portion 362 of the screw 361 sequentially passes through the through hole 372 of the female body 370, the through hole 373 of the attachment body 369, the circular center through hole 363 of the rotation preventing pad 360, and the rotation preventing boss 374 of the screw 361 is inserted into the female body 370.
  • the rotation preventing pad boss 367 of the rotation preventing pad 360 is inserted into the rotation preventing hole 371 of the attachment body 369, and the screw 361 is screwed with the lock nut 376 to connect the mother body 370, the attachment body 369 and the rotation stop.
  • Pads 360 are mounted together.
  • the rotation preventing pad boss 367 of the rotation preventing pad 360 and the rotation preventing hole 371 of the attachment body 369 cooperate with the restraining rotation preventing pad 360 to rotate relative to the attachment body 369.
  • the rotation preventing sleeve 364 is mounted outside the lock nut 376, and the rotation preventing boss 365 of the rotation preventing sleeve 364 is inserted into the gasket rounding through hole 366 of the rotation preventing sleeve 360, and the rotation preventing boss 365 of the rotation preventing sleeve 364 is stopped.
  • the washer round stop through hole 366 of the rotary pad 360 cooperates with the restraining rotation sleeve 364 to rotate relative to the rotation stop pad 360.
  • a fastening connection assembly includes a screw 461, a rotation preventing pad 462, a lock nut 463, and a rotation preventing sleeve 464.
  • the screw 461 includes an externally threaded portion 466 that mates with the threaded through hole 465 of the lock nut 463, and a right hexagonal head portion 484 that projects axially toward the end surface of the externally threaded portion 466 by a rotation preventing boss 467.
  • the lock nut 463 has a stepped shape and includes a positive hexagonal clamping portion 468 and an outer gear-shaped rotation preventing portion 469.
  • the axial center position is provided with a threaded through hole 465 that cooperates with the externally threaded portion 466, and the rotation preventing portion 469 is radially convex.
  • the clamping portion 468 is taken out.
  • a clamping portion 468 is provided to facilitate the clamping of the locking nut 463 by the wrench when the locking nut 463 is installed and removed.
  • a plurality of triangular teeth uniformly arranged in the circumferential direction are provided on the outer circumference of the rotation preventing portion 469, and one triangular tooth forms a nut rotation preventing portion 470.
  • the rotation preventing pad 462 is a circular plate-shaped stamping member, and the shaft center is provided with a through hole 471 that cooperates with the external thread portion 466 of the screw 461.
  • the maximum inner diameter of the through hole 471 is smaller than the maximum outer diameter of the lock nut 463, and the rotation preventing pad
  • the end surface of the 462 is provided with a gasket stop through hole 472 which is matched with the rotation preventing boss 475 of the rotation preventing sleeve 464.
  • the rotation preventing pad 462 uniformly distributes a plurality of stamped embedded teeth toward the one side of the through hole 471. 473, the embedded tooth 473 is wedge-shaped.
  • the rotation sleeve 464 is annular, and the axial position of the rotation sleeve 464 is provided with an axial rotation preventing through hole 474 which cooperates with the lock nut 463, and an axial projection on one end surface of the rotation sleeve 464
  • the turning boss 475 has a resisting position of the rotation preventing boss 475 in the circumferential direction and toward the screw unscrewing direction.
  • the hole wall of the through hole 474 is an inner gear shape that cooperates with the outer gear shape of the lock nut 469 of the lock nut 463.
  • the hole wall of the stop through hole 474 is provided with a plurality of uniform circumferential juxtaposed triangular grooves.
  • a single triangular groove on the wall of the hole of the through hole 474 forms a rotation preventing inner rotation portion 476 which cooperates with the nut rotation preventing portion 470.
  • the hole wall of the rotation preventing sleeve 464 is uniformly distributed in three semicircles for accommodating The glue tank 478 of the fixing glue 477.
  • the fastening connection structure includes a fastening connection assembly, a mother body 479, and an attachment body 480.
  • the attachment body 480 is provided with a through hole 481 that cooperates with the external thread portion 466 of the screw 461.
  • the hardness of the attachment body 480 is smaller than the hardness of the insertion tooth 473 of the rotation preventing pad 462.
  • the base body 479 is provided with a through hole 482 that cooperates with the external thread portion 466 of the screw 461.
  • a circular rotation preventing hole 483 that is in clearance with the rotation preventing boss 467 is provided.
  • the external thread portion 466 of the screw 461 sequentially passes through the through hole 482 on the female body 479, the through hole 481 on the attached body 480, and the through hole 471 of the rotation preventing pad 462 are screwed with the lock nut 463, and the rotation preventing boss of the screw 461 467 is inserted into the circular rotation hole 483 of the female body 479.
  • the screw 461 is non-rotatably mounted on the female body 479.
  • the lock nut 463 axially abuts the rotation preventing pad 462, and the embedded tooth 473 of the rotation preventing pad 462 is embedded in the attachment body 480.
  • the rotating pad 462 is rotated relative to the attached body 480, and the screw 461 and the lock nut 463 fasten the female body 479, the appendage 480 and the anti-rotation pad 462 together.
  • the rotation preventing sleeve 464 is installed outside the lock nut 463, and the resisting position of the rotation preventing boss 475 is close to or in contact with the gasket rotation preventing through hole 472, and the nut rotation preventing portion 470 of the triangular tooth is inserted correspondingly.
  • the rotation preventing boss 475 of the rotation preventing sleeve 464 is inserted into the gasket rotation preventing through hole 472, and the nut rotation preventing portion 470 adjacent to the rubber tank 478 in the rubber tank 478.
  • a fixing glue 477 is filled between the gaps of the rotation preventing portion 476 of the rotation preventing sleeve, and the fixing rubber 477 fixes the rotation preventing sleeve 464 to the outside of the locking nut 463 to axially limit the rotation preventing sleeve 464.
  • the rotation preventing boss 475 is resisted by the gasket rotation preventing through hole 472 on the side facing the unscrewing direction of the rotation preventing pad 462, and the rotation preventing sleeve 464 is installed outside the locking nut 463 to jointly restrain the rotation preventing sleeve 464 from rotating relative to the rotation preventing pad 462.
  • the nut rotation preventing portion 470 cooperates with the rotation preventing sleeve inner rotation preventing portion 476 to rotate the restraining rotation sleeve 464 relative to the locking nut 463, and the mother body 479 and the attachment body 480 are not relatively rotated, so the screw 461 and the lock nut 463 are non-rotatably coupled with The parent body 479 and the appendage 480 are mounted together.
  • the holding portion 502 of the lock nut 501 protrudes radially from the rotation preventing portion 503.
  • the anti-rotation sleeve 504 includes an annular anti-rotation sleeve body 505.
  • the central through-hole 506 is disposed at the axial center of the anti-rotation sleeve body 505, and three elastic arms 507 are evenly distributed on the wall of the central through-hole 506.
  • Each of the resilient arms 507 includes a horizontal projection 508 formed radially inward from the bore wall of the central through bore 506, a U-shaped resilient arm 509 axially upwardly and then radially inwardly and axially downwardly formed, from the U-shaped resilient arm
  • the end portion of the 509 is formed with the stopper portion 510 radially inwardly, and the inner surface of the three stopper portions 510 is provided with a plurality of uniform shapes of the internal gear that partially engages with the rotation preventing portion 503 of the outer shape of the lock nut 501.
  • a circumferentially arranged triangular groove a single triangular groove on the inner side surface of the limiting portion 510 is formed into a rotation preventing sleeve inner rotation preventing portion 512 engaged with the nut rotation preventing portion 511, and a triangular shape on the inner side surface of the three limiting portions 510
  • the groove wall of the groove is enclosed to form a non-closed through hole 513.
  • a rotation preventing boss 514 is axially projected from the end surface of the rotation preventing sleeve 504 away from the U-shaped elastic arm 509.
  • the fastening connection structure is different from that of the first embodiment in that the rotation preventing portion 503 of the lock nut 501 faces the attachment body 515.
  • the U-shaped elastic arm 509 of the rotation preventing sleeve 504 is placed outside the rotation preventing portion 503 of the lock nut 501 by elastic deformation, and the rotation preventing boss 514 of the rotation preventing sleeve 504 is inserted into the gasket rotation preventing through hole 516 of the rotation preventing pad 515.
  • the limiting portion 510 of the rotation preventing sleeve 504 is axially restrained by the clamping portion 502 of the locking nut 501 toward the end surface of the attachment body 515 against the side of the rotation preventing sleeve 504 facing away from the attachment body 515.
  • both end faces of the screw rotation preventing pad 521 are smooth faces, and friction particles or embedding projections for increasing friction are not provided.
  • the lock nut 522 includes an outer hexagonal clamping portion 523, a rotation preventing abutting portion 524, and a positioning portion 525.
  • the rotation preventing abutting portion 524 includes a rotation preventing portion 526 connected to the clamping portion 523 and is connected to the positioning portion 525.
  • the damper portion 527 is vacant, and the urging portion 527 radially protrudes from the positioning portion 525.
  • the rotation preventing portion 526 radially protrudes from the dam portion 527 and the nip portion 523.
  • a plurality of evenly circumferentially arranged trapezoidal teeth are provided on the outer circumference of the rotation preventing portion 526 of the lock nut 522, and one trapezoidal tooth forms a nut rotation preventing portion 528.
  • the rotation preventing sleeve 529 includes an annular rotation preventing sleeve body 530.
  • the central through hole 531 is disposed at the axial center of the rotation preventing sleeve body 530, and the same height is extended along the outer circumference and the inner circumference of the rotation preventing sleeve body 530.
  • the outer convex ring 532 and the inner convex ring 533 have three limiting portions 534 protruding radially on the inner convex ring 533 along the top surface of the inner convex ring 533, along the circumferential sides of each limiting portion 534, with the center
  • the center of the through hole 531 is provided with a radial straight groove 535 which cuts the inner convex ring 533 and partially cuts the rotation preventing sleeve body 530, and the inner convex ring 533 and the rotation preventing sleeve body 530 which are connected to the limiting portion 534.
  • a resilient arm 536 is formed.
  • a plurality of axially trapezoidal grooves of a uniform circumferential shape in a shape of an internal gear that partially engages with the rotation preventing portion 526 of the outer shape of the lock nut 522 are provided, and the inside of the limiting portion 534 is provided.
  • the trapezoidal groove on the side surface forms a rotation preventing sleeve inner rotation preventing portion 537 that engages with the nut rotation preventing portion 528, and the groove wall of the trapezoidal groove on the inner side surface of the inner convex ring 533 is closed to form a non-closed rotation preventing through hole 553.
  • a rotation preventing boss 539 is axially projected between a side of the rotation preventing sleeve body 530 facing the inner convex ring 533, an inner convex ring 533 and an outer convex ring 532.
  • the center of the rotation preventing pad 540 is provided with a circular center through hole 541 which is in clearance with the positioning portion 525 of the lock nut 522.
  • the end surface of the rotation preventing pad 540 is provided with a clearance fit with the rotation preventing boss 539 of the rotation preventing sleeve 529.
  • the shim rounds the through hole 542.
  • Both end faces of the rotation preventing pad 540 are smooth faces, and there are no friction particles or embedded protrusions for increasing friction.
  • One end surface of the screw rotation preventing pad 521 is coated with glue, and the external thread portion 544 of the screw 543 protrudes from the end surface of the screw rotation preventing pad 521 which is not coated with the rubber into the circular center through hole 545 of the screw rotation preventing pad 521, and the rotation preventing convex portion
  • the table 552 extends into the rotary screw circular through hole 546 of the screw rotation preventing pad 521, and the screw rotation preventing pad 521 is sleeved on the screw 543; the end surface of the rotation preventing pad 540 is coated with glue, and the external thread portion 544 of the screw 543 is attached.
  • the through hole 549 on the mother body 548, the through hole 551 in the appendage 550, the circular center through hole 541 and the lock nut 522 thread passing through the anti-rotation pad 540 from the end face of the anti-rotation pad 540 without the glue.
  • the connection, the lock nut 522 and the screw 543 securely connect the screw rotation preventing pad 521, the female body 548, and the attachment body 550 and the rotation preventing pad 540.
  • the surface of the rotating pad 540 is adhered to the surface of the appendage 550, and a large adhesive force is generated on the surface of the appendage 550 to restrict the rotation of the anti-rotation pad 540 relative to the appendage 550.
  • the rotating pad 521 is bonded to the surface of the mother body 548, and has a large adhesive force with the surface of the mother body 548 to restrain the rotation of the screw rotation preventing pad 521 relative to the mother body 548.
  • the rotation preventing protrusion 552 extends into the rotation preventing screw of the screw rotation preventing pad 521.
  • the circular through hole 546 restrains the screw 543 from rotating relative to the screw rotation preventing pad 521, and the screw 543, the screw rotation preventing pad 521, and the rotation preventing pad 540 are both non-rotatable with respect to the parent body 548 and the attachment body 550.
  • the rotation preventing sleeve 529 is placed outside the rotation preventing portion 526 of the lock nut 522, and the elastic arm 536 of the rotation preventing sleeve 529 is elastically deformed so that the limiting portion 534 of the elastic arm 536 is placed outside the resisting portion 527 of the lock nut 522.
  • the rotation preventing boss 539 of the rotary sleeve 529 is inserted into the spacer circular rotation through hole 542 of the rotation preventing pad 540, and the stopper portion 534 of the rotation preventing sleeve 529 is directed toward the end surface of the attachment body 550 by the rotation preventing portion 526 of the lock nut 522.
  • the axial stop of the side of the anti-rotation sleeve 529 away from the attachment 550 is resisted.
  • the fastening joint assembly further includes a screw rotation preventing pad 601.
  • the screw rotation preventing pad 601 is a circular plate-shaped stamping member, and the shaft center is provided with a through hole 615 that cooperates with the external thread portion 603 of the screw 602.
  • One end surface of the screw rotation preventing pad 601 is provided with a rotation preventing convexity with the screw 602.
  • the table 604 is a clearance-fitted through-hole 605.
  • the screw-stopping pad 601 circumferentially distributes a plurality of stamped embedded teeth 606 along the periphery of the through-hole 615.
  • the embedded teeth 606 are wedge-shaped.
  • the external thread portion 603 of the screw 602 passes through the through hole 615 of the screw rotation preventing pad 601 from the side of the screw rotation preventing pad 601 facing away from the fitting tooth 606, and the rotation preventing boss 604 of the screw 602 is inserted into the circular rotation of the screw rotation preventing pad 601.
  • the through hole 605 the through hole 608 on the base 607, the through hole 610 on the attached body 609, and the through hole 612 of the rotation preventing pad 611 are screwed with the lock nut 613 at the screw 602 and the lock nut 613.
  • the inserting teeth 606 of the screw rotation preventing pad 601 are embedded in the mother body 607, and the locking nut 613 axially resists the rotation preventing pad 611.
  • the head 614 of the screw 602 axially resists the screw rotation preventing pad 601, and the screw rotation preventing pad 601
  • the inserting tooth 606 is embedded in the female body 607 to restrain the screw rotation preventing pad 601 from rotating relative to the mother body 607.
  • the rotation preventing boss 604 of the screw 602 is inserted into the circular rotation preventing hole 605 of the screw rotation preventing pad 601 to constrain the screw 602 with respect to the screw rotation preventing pad 601. Rotating, the screw 602 and the lock nut 613 securely couple the parent body 607, the attachment body 609 and the screw rotation preventing pad 601 together, and the screw 602 is non-rotatably mounted with the mother body 607.
  • the anti-rotation pad 700 is a square with rounded corners and is not provided with an embedded tooth, and the anti-rotation pad 700 has elasticity, on opposite sides of the anti-rotation pad 700. Curved to the same side to form a pointed embedded edge 701.
  • One end of the rotation preventing portion 703 of the lock nut 702 abuts against the rotation preventing pad 700.
  • the insertion edge 701 of the rotation preventing pad 700 is inserted into the female body 704 and generates a static frictional restraining rotation preventing pad 700 to rotate relative to the mother body 704.
  • the rotation preventing pad 700 is non-rotatably mounted on the rotation preventing pad 700. Attached to the body 705.
  • the fastening connection assembly further includes a limiting member 720.
  • the lock nut 721 includes a clamping portion 722, a rotation preventing portion 723, and a resisting portion 724 in this order.
  • the rotation preventing portion 723 radially protrudes from the clamping portion 722 and the abutting portion 724 for avoiding the air.
  • the limiting member 720 is a plastic member, and includes a ring-shaped limiting member body 725.
  • the outer peripheral shape of the limiting member body 725 is similar to the outer shape of the rotation preventing sleeve 726, and the inner diameter of the limiting member body 725 is slightly larger than the locking nut.
  • the outer diameter of the rotation preventing portion 723 of the 721, the limiting member body 725 protrudes radially inwardly along the inner circular axis to three evenly distributed elastic buckles 727, and the resisting portion 728 of each elastic buckle 727 faces the limit.
  • six limiting posts 729 protrude from the end faces of the limiting body 725 and the elastic buckle 727, and a resisting ring 730 is disposed at the end of the limiting post 729.
  • the anti-rotation sleeve 726 is a metal member, and includes an annular anti-rotation sleeve body 732 having a rotation-stopping hole 731 in the center, and three elastic cards of the air-tight limiting member 720 are uniformly distributed in the circumferential direction of the hole wall of the anti-rotation through hole 731.
  • the escape groove 733 of the buckle 727 has a rotation preventing sleeve inner rotation preventing portion 734 in which the corner preventing teeth are uniformly arranged at the position where the through hole 731 is not provided with the cutout groove 733, and the rotation preventing sleeve 726 is provided with six circumferences.
  • the mounting hole 735 of the distributed axial direction of the limiting post 729 of the limiting member 720 is provided with three clamping grooves 736 for taking out the limiting member 720 on the outer circumference of the rotation preventing sleeve 726.
  • the finished rotation sleeve 726 is placed in the injection mold of the molding limit member 720, and the stopper 720 is injection molded.
  • the limiting post 729 of the limiting member 720 passes through the mounting hole 735 of the rotation preventing sleeve 726, and the limiting member 720 is fixed on the rotation preventing sleeve 726 through the resisting ring 730 of the limiting post 729, and the elastic buckle 727 is placed at the rotation stop
  • the sleeve 726 is in the cutout 733.
  • the outer circumference of the rotation preventing pad 737 includes two circular arc surfaces that are symmetric about the central axis, and two parallel planes that connect the two circular arc surfaces.
  • the embedded side 739 of the rotation preventing pad 737 has two circular arc sides.
  • the rotation sleeve 726 is mounted outside the lock nut 721 together with the stopper 720.
  • the rotation sleeve body 732 is mounted outside the rotation preventing portion 723 of the lock nut 721, and the elastic buckle 727 of the stopper 720 is stopped by elastic deformation.
  • the end portion of the rotating portion 723 facing the resisting portion 724 is axially restrained from the side of the rotation preventing sleeve 726 that faces away from the attachment 740.
  • a fastening connection structure includes a fastening connection assembly and a connected member 1031.
  • the fastening connection assembly comprises a U-shaped threaded connection 1032, two identically configured lock nuts 1033, two identically configured rotation sleeves 1034, and two identically configured resisting nuts 1035.
  • the threaded connector 1032 includes a U-shaped threaded connector body 1036. Both ends of the threaded connector body 1036 are provided with external threaded portions 1037. The outer diameter of the externally threaded portion 1037 is smaller than the outer diameter of the threaded connector body 1036. The threaded portions 1037 are parallel to each other and are perpendicular to the corresponding end faces of the threaded connector body 1036.
  • the lock nut 1033 is a hexagonal nut.
  • the six planes of the outer circumference of the lock nut 1033 form six nut-rotation portions 1038 arranged circumferentially, and a threaded through hole 1039 is provided at the axial center.
  • the axial center position of the rotation preventing sleeve 1034 is provided with an axial rotation preventing through hole 1040 that cooperates with the lock nut 1033, and an anti-rotation boss 1041 is axially protruded on one end surface of the rotation preventing sleeve 1034, and the rotation preventing boss
  • the resisting position of 1041 is in the circumferential direction, toward the screw unscrewing direction.
  • the hole wall of the through hole 1040 is an intersecting structure in which two identical hexagonal holes of the same structure are rotated by 30°, and twelve pointed grooves are formed on the wall of the hole of the through hole 1040, and each of the pointed grooves is formed by
  • the two intersecting planes of the regular hexagonal holes are formed, and the two intersecting planes of the pointed recessed grooves form the anti-rotation sleeve inner rotation preventing portion 1042 that cooperates with the nut rotation preventing portion 1038 of the lock nut 1033.
  • the axial position of the resisting nut 1035 is provided with a threaded through hole 1046, and the threaded through hole 1046 is connected to the hollow hole 1043 of the hollow lock nut 1033.
  • the connecting member 1031 is provided with two through holes 1044 which cooperate with the external threaded portion 1037 of the threaded connecting member 1032.
  • the axial distance between the two through holes 1044 is equal to the axial distance of the two externally threaded portions 1037, and is connected.
  • a side of the piece 1031 facing the rotation preventing sleeve 1034 is provided with a rotation preventing hole 1045 which is in clearance with the rotation preventing boss 1041.
  • the externally threaded portions 1037 at both ends of the threaded connector 1032 are respectively threadedly connected to the corresponding locknuts 1033 through the corresponding through holes 1044 of the connected member 1031, and the two through holes 1044 on the connector 1031 constrain the threaded connectors 1032 to be opposite each other.
  • the threaded connector body 1036 axially abuts the side of the connected member 1031
  • the lock nut 1033 axially abuts the other side of the connected member 1031
  • the locking nut 1033 at both ends of the threaded connecting member 1032 connects the threaded connecting member
  • the 1032 and the connected member 1031 are fastened together.
  • the rotation preventing sleeve 1034 is installed outside the lock nut 1033, and the resisting position of the rotation preventing boss 1041 is close to the rotation preventing hole 1045 or is in contact with the rotation preventing hole 1045, and the nut rotation preventing portion 1038 is matched with the rotation preventing portion 1042 of the rotation preventing sleeve.
  • the restraining lock nut 1033 rotates relative to the rotation preventing sleeve 1034.
  • the rotation preventing boss 1041 is resisted by the rotation preventing hole 1045 on the side facing the loosening direction of the lock nut 1033, and the rotation preventing sleeve 1034 is installed outside the locking nut 1033.
  • the rotation sleeve 1034 is rotated relative to the connected member 1031.
  • the resisting nut 1035 axially limits the rotation sleeve 1034 outside the nut rotation portion 1038 of the lock nut 1033.
  • the lock nut 1033 and the threaded connection member at both ends of the threaded connection member 1032 1032, the connected members 1031 are non-rotatably mounted together.
  • three square-shaped escape holes 1072 are uniformly arranged along the outer circumferential direction of the rotation preventing through hole 1071, and three holding grooves are provided on the outer circumference of the rotation preventing sleeve 1073.
  • the through hole 1071 is a closed inner gear hole.
  • the limiting member 1074 includes an annular stopper body 1075.
  • the center of the limiting member body 1075 is provided with a central through hole 1076.
  • the minimum diameter of the central through hole 1076 is larger than the maximum diameter of the through hole 1071.
  • Three grooves 1077 are uniformly distributed in the circumferential direction of the hole wall of the central through hole 1076, and the end faces of the vertical stopper body 1075 and the corresponding side of each groove 1077 are provided with the first elasticity flush with the bottom surface of each groove 1077.
  • the arm 1078 has an arc-shaped elastic arm 1079 bent along the axial center of the central through hole 1076 along the end of the first elastic arm 1078, and a second elastic arm 1080 is formed vertically along the end of the curved elastic arm 1079.
  • the end of the second elastic arm 1080 is horizontally bent toward the central through hole 1076 to form a limiting portion 1081.
  • the first elastic arm 1078 and the second elastic arm 1080 are line-symmetric with respect to the axis of the curved elastic arm 1079.
  • the first resilient arm 1078, the curved resilient arm 1079, and the second resilient arm 1080 form a U-shaped resilient arm 1082.
  • the limiting portion 1081 is in the same plane as the stopper body 1075.
  • the outer diameter of the stopper body 1075 is smaller than the outer diameter of the rotation preventing sleeve 1073.
  • the U-shaped elastic arm 1082 is engaged with the escape through hole 1072.
  • the axis position relationship of the rotation preventing through hole 1071 of the rotation preventing sleeve 1073 corresponds to the axial positional relationship of the center through hole 1076 of the limiting member 1074, and the three U-shaped elastic arms 1082 on the limiting member 1074 are respectively mounted on the rotation preventing sleeve 1073.
  • Three sheltered through holes 1072 The end surface of the stopper body 1075 is welded to the end surface of the rotation preventing sleeve 1073.
  • the limiting portion 1081 of the limiting member 1074 radially protrudes from the rotation preventing through hole 1071 of the rotation preventing sleeve 1073.
  • the distance between the first elastic arm 1078 and the second elastic arm 1080 of the limiting member 1074 is greater than the length of the limiting wall of the limiting member 1081 of the limiting member 1074 protruding from the rotation preventing through hole 1071 of the rotation preventing sleeve 1073 to provide Deformation space.
  • the rotation preventing sleeve 1073 is mounted together with the limiting member 1074 outside the rotation preventing portion 1084 of the lock nut 1083, and the rotation preventing boss (not shown) of the rotation preventing sleeve 1073 is inserted into the rotation preventing hole of the attachment body 1085 (not shown).
  • the U-shaped elastic arm 1082 of the limiting member 1074 is elastically deformed to insert the limiting portion 1081 into the receiving space formed by the stopping portion 1084 and the resisting portion 1086, and is blocked by the locking portion 1084.
  • the end face of the portion 1086 resists and axially limits the side of the rotation preventing sleeve 1073 away from the attachment 1085.
  • the limiting member includes three elastic limiting members 1101 having the same structure.
  • the elastic limiting member 1101 is formed by bending a long strip of metal.
  • the elastic limiting member 1101 includes a horizontal limiting portion 1102.
  • the first elastic arm 1103 that is bent by the vertical limiting portion 1102 is horizontally bent toward the limiting portion 1102 along the end of the first elastic arm 1103.
  • the buckle 1104 is formed by bending the buckle 1104 in the opposite direction obliquely upward, and then bending the reverse arc downward, and then horizontally bending toward the limiting portion 1102, and then vertically downward along the end of the buckle 1104.
  • the bent second elastic arm 1105 is further disposed on the same plane along the resisting portion 1106 that is horizontally bent away from the end portion of the second elastic arm 1105.
  • the resisting portion 1106 and the limiting portion 1102 are located on the same plane.
  • the two horizontal portions 1107 of the buckle 1104 are located on the same plane.
  • the distance between the limiting portion 1102 and the horizontal portion 1107 of the corresponding buckle 1104 is equal to the thickness of the cuff sleeve 1108.
  • the limiting portion 1102 of the elastic limiting member 1101 is oriented toward the axial center of the rotation preventing sleeve 1108, and the buckle 1104 is inserted through the hollow through hole 1109 of the rotation preventing sleeve 1108 to mount the elastic limiting member 1101 and the rotation preventing sleeve 1108.
  • the limiting portion 1102 of the elastic limiting member 1101 radially protrudes from the hole wall of the rotation preventing through hole 1110 of the rotation preventing sleeve 1108.
  • the distance between the two elastic arms of the elastic limiting member 1101 is greater than the elastic limiting member 1101.
  • the limiting portion 1102 protrudes the length of the hole wall of the rotation preventing through hole 1110 of the rotation preventing sleeve 1108 to provide a deformation space.
  • the other two elastic limiting members 1101 and the anti-rotation sleeve 1108 are mounted together in the same manner.
  • the rotation preventing sleeve 1108 is mounted together with the three elastic limiting members 1101 mounted together outside the rotation preventing portion 1112 of the lock nut 1111, and the rotation preventing boss (not shown) of the rotation preventing sleeve 1108 is inserted into the attachment body 1113.
  • the buckle 1104 of the elastic limiting member 1101 and the first elastic arm 1103 are elastically deformed to insert the limiting portion 1102 into the rotation preventing portion 1112 of the lock nut 1111 and the resisting portion 1114.
  • the limiting portion 1102 is accommodated in the space, and is blocked by the rotation preventing portion 1112 toward the end surface of the blocking portion 1114, and is axially restricted to the side of the rotation preventing sleeve 1108 away from the attached body 1113.
  • three or more pad protrusions 1244 are provided on the side of the resisting portion 1242 of each elastic limiting member 1241 facing away from the buckle 1243 , and the limiting portion 1245 and the resisting portion The sections 1242 are on the same plane.
  • the padding protrusion 1244 allows the stopper portion 1245 to be clearance-fitted with the attachment body (not shown) and the rotation preventing sleeve (not shown), and the rotation stop stopper assembly is attached to the rotation preventing abutment portion of the screw (not shown).
  • the limiting portion 1245 is facilitated to move between the rotation preventing sleeve and the attachment body.
  • the distance between the buckle 1243 and the resisting portion 1242 is equal to the thickness of the rotation preventing sleeve, and is gradually reduced from the top end of the buckle 1243 toward the direction of the limiting member.
  • the elastic limiting member 1241 of the structure, the second elastic arm The 1247 is tightly engaged with the through hole of the anti-rotation sleeve.
  • the noise can be greatly reduced, and the rotation stop limit component is installed outside the rotation stop resisting portion 1242 of the screw; the first elastic arm 1246 is matched with the air escape through hole, and the rotation stop limit component is mounted on the screw During the upper process, when the first elastic arm 1246 and the buckle 1243 are elastically deformed, the first elastic arm 1246 can move freely in the through hole, so that the limiting portion 1245 can easily protrude into the limiting portion receiving space.
  • the two ends of the curved elastic arm 1261 are gradually reduced toward the both sides of the limiting member.
  • the limiting member of the structure, the first elastic arm 1262, and the first A half-arc elastic arm 1261 that is in contact with a resilient arm 1262 is tightly fitted with a hollow through hole (not shown) of the anti-rotation sleeve (not shown), and a half-elastic elasticity that is in contact with the second elastic arm 1263
  • the arm 1261 and the second elastic arm 1263 are gap-fitted with the air-proof through hole, so that when the curved elastic arm 1261 and the second elastic arm 1263 are not elastically deformed, the limiting member does not displace relative to the rotation preventing sleeve, and the fastening connection is fastened.
  • the structure is in a severely vibrating environment, the noise can be greatly reduced, and the rotation stop limit assembly is mounted outside the anti-rotation abutment portion (not shown) of the screw (not shown); the rotation stop limit assembly is mounted on the screw During the upper process, when the curved elastic arm 1261 and the second elastic arm 1263 are elastically deformed, the half curved elastic arm 1261 and the second elastic arm 1263 are elastically movable in the hollow through hole, so that the limiting portion is more easily inserted. The limit portion is accommodated in the space.
  • the crankshaft link mechanism includes a fastening connection assembly, a crankshaft 1281, and a link set.
  • the fastening connection assembly differs from the embodiment 1 in that the outer circumference of the head 1297 of the screw 1288 includes a central angle greater than An arc surface of 180° and a rotation stop plane 1282 connecting the ends of the arc surface.
  • the link set includes a link body 1283, a link head cover 1284, and a link big head bush 1285.
  • the link body 1283 includes a link head 1286 and a link head 1287.
  • the connecting rod head 1286 is provided with a through hole 1290 that cooperates with the external thread portion 1289 of the screw 1288.
  • the connecting rod head cover 1284 is provided with a through hole 1291 that cooperates with the external thread portion 1289 of the screw 1288.
  • a circular large head stop hole 1294 that engages with the rotation preventing boss 1293 of the rotation preventing sleeve 1292 is provided on a side of the connecting rod head cover 1284 facing away from the connecting rod head 1286.
  • the connecting rod big head bushing 1285 is hug outside the crankshaft 1281, and the connecting rod big head 1286 and the connecting rod big head cover 1284 are hugged outside the connecting rod big head bushing 1285; the external threaded portion 1289 of the screw 1288 passes through the through hole 1290 of the connecting rod big head 1286, and the connecting The through hole 1291 of the rod head cover 1284 is screwed with the threaded through hole 1296 of the lock nut 1295 and the rotation preventing plane 1282 of the screw 1288 is resisted by the side wall of the connecting rod head 1286 to rotate the restraining screw 1288 relative to the connecting rod head 1286, the screw 1288 Non-rotatably mounted with the connecting rod head 1286, the head 1297 of the screw 1288 axially resists the connecting rod head 1286, the locking nut 1295 axially resists the connecting rod head cover 1284, and the screw 1288 and the lock nut 1295 connect the connecting rod head
  • the 1286 and the connecting rod head cover 1284 are fastened together.
  • the rotation preventing sleeve 1292 is mounted outside the rotation preventing portion 1298 of the lock nut 1295 and the abutting position of the rotation preventing boss 1293 of the rotation preventing sleeve 1292 is close to or in contact with the large head rotation hole 1294, and the resisting nut 1299 is mounted on the external thread of the screw 1288. In the portion 1289, the resisting nut 1299 axially limits the side of the anti-rotation sleeve 1292 away from the connecting rod head cover 1284.
  • the rotation preventing boss 1293 of the rotation preventing sleeve 1292 is rotated by the large head rotation hole 1294 against the restriction rotation sleeve 1292 on the side of the lock nut 1295 in the unscrewing direction, and the nut rotation preventing portion 1300 and the rotation preventing sleeve are rotated.
  • the inner rotation stop portion 1301 cooperates with the restraining rotation sleeve 1292 to rotate relative to the lock nut 1295.
  • the screw 1288 is non-rotatably mounted with the lock nut 1295, the link head 1286 and the link head cover 1284.
  • the rotation preventing sleeve of the rotation preventing sleeve can be two or more, and the attachment body is provided with an auxiliary rotation preventing hole which is matched with the rotation preventing projection boss of the rotation preventing sleeve;
  • the body stop hole can also be an integral multiple of the rotation sleeve of the rotation preventing sleeve; according to an embodiment of the present invention, those skilled in the art can realize the invention without any creative labor, and therefore will not be described in the specific embodiment.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bolts, Nuts, And Washers (AREA)

Abstract

L'invention concerne une structure de liaison de fixation, comprenant un ensemble de liaison de fixation, un corps parent (16) et un corps d'appendice (17). L'ensemble de liaison de fixation comprend une tige filetée (1), un contre-écrou (2) et un manchon d'arrêt de rotation (3). Un bossage d'arrêt de rotation (14) du manchon d'arrêt de rotation, destiné à empêcher toute rotation du manchon d'arrêt de rotation (3) dans la direction dans laquelle la tige filetée se desserre, est disposé axialement sur une face d'extrémité du manchon d'arrêt de rotation (3) de manière saillante. Le corps parent (16) et le corps d'appendice (17) sont fixés et reliés l'un à l'autre par l'intermédiaire de la tige filetée (1) et du contre-écrou (2). Le manchon d'arrêt de rotation (3) est installé à l'extérieur du contre-écrou (2) ; le bossage d'arrêt de rotation (14) du manchon d'arrêt de rotation est inséré dans un trou d'arrêt de rotation (22) du corps d'appendice ; et le manchon d'arrêt de rotation (3) est axialement limité à l'extérieur du contre-écrou (2). Le bossage d'arrêt de rotation (14) du manchon d'arrêt de rotation est contrarié par le trou d'arrêt de rotation (22) du corps d'appendice sur un côté dans la direction dans laquelle le contre-écrou se desserre de façon à empêcher toute rotation du manchon d'arrêt de rotation (3) par rapport au corps d'appendice (17). Le corps parent (16) et le corps d'appendice (17) sont fixés et reliés l'un à l'autre par l'intermédiaire de la tige filetée (1) et du contre-écrou (2) de manière non rotative. La présente invention offre les avantages de ne pas nécessiter une pièce d'arrêt de rotation et l'usinage d'un trou d'arrêt de rotation sur le corps d'appendice. Le manchon d'arrêt de rotation est rapide, pratique et fiable à installer et à retirer. La tige filetée ne peut pas tourner en sens inverse et se desserrer.
PCT/CN2016/097442 2016-08-31 2016-08-31 Structure de liaison de fixation, ensemble de liaison de fixation et mécanisme de bielle de vilebrequin WO2018039948A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/097442 WO2018039948A1 (fr) 2016-08-31 2016-08-31 Structure de liaison de fixation, ensemble de liaison de fixation et mécanisme de bielle de vilebrequin

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Application Number Priority Date Filing Date Title
PCT/CN2016/097442 WO2018039948A1 (fr) 2016-08-31 2016-08-31 Structure de liaison de fixation, ensemble de liaison de fixation et mécanisme de bielle de vilebrequin

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Cited By (13)

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Publication number Priority date Publication date Assignee Title
CN108953354A (zh) * 2018-10-11 2018-12-07 合肥惠科金扬科技有限公司 防松动装置
CN108972927A (zh) * 2018-08-07 2018-12-11 盐城市海通机械制造厂 一种前顶靠尺装置
CN110609156A (zh) * 2019-10-24 2019-12-24 东莞市旭锐精密科技有限公司 快装拆式电池测试针
CN112173956A (zh) * 2020-09-12 2021-01-05 北京城建八建设发展有限责任公司 地基处理用自动脱钩装置
CN114172989A (zh) * 2022-02-11 2022-03-11 荣耀终端有限公司 电子设备及电子设备的组装方法
CN114476410A (zh) * 2022-03-09 2022-05-13 刘芳业 一种水利工程排涝站用压力水箱
CN114754052A (zh) * 2022-04-22 2022-07-15 上海华育金属有限公司 一种新型螺钉
CN114893491A (zh) * 2022-05-14 2022-08-12 福安奥展实业有限公司 一种防脱防盗的螺母
CN115046098A (zh) * 2022-06-22 2022-09-13 深圳创维－Rgb电子有限公司 支撑结构及显示装置
CN115182919A (zh) * 2022-07-27 2022-10-14 中国煤炭科工集团太原研究院有限公司 一种销轴及销轴固定装置和销轴安装方法
CN115241685A (zh) * 2022-08-17 2022-10-25 国网山东省电力公司临沭县供电公司 高空电缆连接端子
CN116428260A (zh) * 2023-04-12 2023-07-14 绍兴山耐高压紧固件有限公司 一种核电工程用紧固件及其制造方法
CN116952444A (zh) * 2023-09-20 2023-10-27 江天科技有限公司 一种智能螺栓螺母垫片传感器

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US4284114A (en) * 1978-05-15 1981-08-18 Toshihiko Korenobu Locking member for a clamping bolt
US4906150A (en) * 1985-07-17 1990-03-06 Bennett Bruce A Locking fastener
CN2132019Y (zh) * 1992-03-28 1993-05-05 叶中午 组合式螺纹联接防松卡垫
US8845254B2 (en) * 2008-12-09 2014-09-30 Sang Cheol Lee Self-locking bolt nut assembly
CN202510519U (zh) * 2012-04-26 2012-10-31 许松林 防松动螺纹紧固件

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108972927A (zh) * 2018-08-07 2018-12-11 盐城市海通机械制造厂 一种前顶靠尺装置
CN108953354A (zh) * 2018-10-11 2018-12-07 合肥惠科金扬科技有限公司 防松动装置
CN110609156A (zh) * 2019-10-24 2019-12-24 东莞市旭锐精密科技有限公司 快装拆式电池测试针
CN112173956B (zh) * 2020-09-12 2022-05-17 北京城建八建设发展有限责任公司 地基处理用自动脱钩装置
CN112173956A (zh) * 2020-09-12 2021-01-05 北京城建八建设发展有限责任公司 地基处理用自动脱钩装置
CN114172989A (zh) * 2022-02-11 2022-03-11 荣耀终端有限公司 电子设备及电子设备的组装方法
CN114476410A (zh) * 2022-03-09 2022-05-13 刘芳业 一种水利工程排涝站用压力水箱
CN114476410B (zh) * 2022-03-09 2024-03-22 刘芳业 一种水利工程排涝站用压力水箱
CN114754052B (zh) * 2022-04-22 2023-07-25 上海华育金属有限公司 一种新型螺钉
CN114754052A (zh) * 2022-04-22 2022-07-15 上海华育金属有限公司 一种新型螺钉
CN114893491A (zh) * 2022-05-14 2022-08-12 福安奥展实业有限公司 一种防脱防盗的螺母
CN114893491B (zh) * 2022-05-14 2024-04-19 福安奥展实业有限公司 一种防脱防盗的螺母
CN115046098A (zh) * 2022-06-22 2022-09-13 深圳创维－Rgb电子有限公司 支撑结构及显示装置
CN115046098B (zh) * 2022-06-22 2024-03-22 深圳创维－Rgb电子有限公司 支撑结构及显示装置
CN115182919A (zh) * 2022-07-27 2022-10-14 中国煤炭科工集团太原研究院有限公司 一种销轴及销轴固定装置和销轴安装方法
CN115241685B (zh) * 2022-08-17 2023-07-07 国网山东省电力公司临沭县供电公司 高空电缆连接端子
CN115241685A (zh) * 2022-08-17 2022-10-25 国网山东省电力公司临沭县供电公司 高空电缆连接端子
CN116428260B (zh) * 2023-04-12 2023-10-31 绍兴山耐高压紧固件有限公司 一种核电工程用紧固件及其制造方法
CN116428260A (zh) * 2023-04-12 2023-07-14 绍兴山耐高压紧固件有限公司 一种核电工程用紧固件及其制造方法
CN116952444A (zh) * 2023-09-20 2023-10-27 江天科技有限公司 一种智能螺栓螺母垫片传感器
CN116952444B (zh) * 2023-09-20 2023-12-12 江天科技有限公司 一种智能螺栓螺母垫片传感器

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