CN115674097B - Temporary fastener based on rigid expansion sleeve - Google Patents
Temporary fastener based on rigid expansion sleeve Download PDFInfo
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- CN115674097B CN115674097B CN202211302246.5A CN202211302246A CN115674097B CN 115674097 B CN115674097 B CN 115674097B CN 202211302246 A CN202211302246 A CN 202211302246A CN 115674097 B CN115674097 B CN 115674097B
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- expansion sleeve
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- 230000007246 mechanism Effects 0.000 claims abstract description 82
- 230000005540 biological transmission Effects 0.000 claims abstract description 74
- 230000008602 contraction Effects 0.000 claims abstract description 5
- 230000001681 protective effect Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B31/00—Hand tools for applying fasteners
- B25B31/005—Hand tools for applying fasteners for temporarily connecting sheets before or during assembly operations
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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
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
- F16B13/06—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve
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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
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
- Transmission Devices (AREA)
Abstract
The application relates to a temporary fastener based on a rigid expansion sleeve. The temporary fastener based on the rigid expansion sleeve comprises: the device comprises a driving mechanism, a fastening mechanism, a clamping mechanism and a transmission mechanism, wherein the fastening mechanism comprises a rotary connecting shaft, an outer magnet, a fastening shell, an inner magnet, a fastening central shaft, a rigid expansion sleeve and an expansion and contraction ring; the driving mechanism can enable the outer magnet to rotate, and then enable the inner magnet to rotate, the fastening central shaft is in threaded connection with the inner magnet, so that when the inner magnet rotates, the fastening central shaft slides along the axial direction of the fastening central shaft, and the rigid expansion sleeve is opened or closed.
Description
Technical Field
The application relates to the technical field of fasteners, in particular to a temporary fastener based on a rigid expansion sleeve.
Background
The fastener is a mechanical part which is used for fastening connection and has extremely wide application, and has wide application industries including energy, electronics, electrical appliances, machinery, chemical industry, metallurgy, mould, hydraulic pressure, aircraft and the like. When the thin-wall plate, the shell mechanism and the like are connected and fixed, a temporary fastener is required to be inserted into a prefabricated hole of a fastened object for pre-connection and fixation, and the temporary fastener is required to be removed after the connection and fixation are finished, so that a fastener capable of being connected and fixed quickly and removed quickly is required.
However, the pawl 172 of the existing fastener (publication number: CN 111503100) is integrally formed, is a hollow elastic structure with a hole guiding function, is retractable and expandable, has high material elasticity, high heat treatment difficulty and high cost, and is low in repeated use times under the action of alternating force and short in service life. In addition, the induction magnet 21 and the driving magnet 22 of the fastener of the prior art (publication number: CN 111503100) are disposed in parallel, and the transmission torque is small, resulting in a small fastening force of the fastener.
Disclosure of Invention
Based on the above, the application aims to provide a temporary fastener based on a rigid expansion sleeve, which has the advantages of simple structure, ingenious design, simple production process, long service life, convenient operation, large transmission torque and large fastening force.
A temporary fastener based on rigid expansion sleeve, characterized in that: comprises a driving mechanism, a fastening mechanism, a clamping mechanism and a transmission mechanism;
the driving mechanism comprises a motor and a torque sensor; one end of the torque sensor is connected with one end of the motor;
the fastening mechanism comprises a rotary connecting shaft, an outer magnet, a fastening shell, an inner magnet, a fastening central shaft, a rigid expansion sleeve and an expansion and contraction ring;
one end of the rotary connecting shaft is connected with the other end of the torque sensor, and the other end of the rotary connecting shaft is fixedly connected with the bottom of the outer magnet; the outer magnet is cylindrical, and is provided with a containing cavity along the axial direction, and the containing cavity penetrates through the top of the outer magnet but does not penetrate through the bottom of the outer magnet;
the fastening shell is cylindrical, a through hole is formed in the axial direction of the fastening shell, the inner magnet is arranged in one end of the fastening shell and can coaxially rotate, one end of the fastening central shaft penetrates through the through hole to be in threaded connection with the inner magnet, and the other end of the fastening central shaft is provided with a fastening taper section; one end of the fastening shell, which is provided with the inner magnet, is embedded in the accommodating cavity and is coaxially arranged;
the rigid expansion sleeve comprises a first expansion sleeve and a second expansion sleeve; the first expansion sleeve and the second expansion sleeve are identical and are oppositely arranged, two ends of the first expansion sleeve and two ends of the second expansion sleeve are respectively fixed by using the expansion shrink rings, the first expansion sleeve is provided with a taper hole along the axial direction, the taper hole is matched with the fastening taper section, and the first expansion sleeve and the second expansion sleeve can be mutually opened or closed when the fastening taper section slides along the axial direction;
the clamping mechanism comprises a first clamp, a second clamp, a clamping screw, a clamping bracket and a clamping motor; the clamping support is arranged on one side of the fastening mechanism and fixed on the transmission mechanism, the clamping screw rod penetrates through the clamping support, two ends of the clamping screw rod are respectively and rotatably connected with two side walls of the clamping support, one end of the clamping screw rod is fixedly connected with an output shaft of the clamping motor, the first clamp and the second clamp are respectively connected with the threaded screw rod of the clamping screw rod, and the first clamp and the second clamp are oppositely arranged and can be mutually close to or far away from each other to form a clamping area;
the transmission mechanism comprises a fixed bottom plate, a transmission motor, a transmission screw, a transmission guide rail and a transmission bearing; the transmission bearing is fixed on the fixed bottom plate, two ends of the transmission screw are rotationally connected with the transmission bearing, one end of the transmission guide rail is fixedly connected with an output shaft of the transmission motor, the transmission screw is in transmission connection with the driving mechanism screw, the transmission guide rail is arranged on two sides of the transmission screw and is parallel to the axial direction of the transmission screw, and the top end of the transmission guide rail is in sliding connection with the driving mechanism.
According to the temporary fastener based on the rigid expansion sleeve, through ingenious design, the rigid expansion sleeve is divided into the two identical first expansion sleeves and the second expansion sleeves, the expansion and contraction rings and the springs are used for radial and axial positioning respectively, and the two expansion sleeves are matched with the structure of the fastening taper section of the fastening central shaft, so that the rigid expansion sleeve with the structure is simple to manufacture, has no elastic requirement on materials, does not need heat treatment, and is low in processing cost. Simultaneously, the outer magnet sets up with interior magnet is coaxial, has improved the moment of torsion transmission performance, still sets up torque sensor and avoids moment of torsion overload, increases fixture and improves job stabilization nature. The temporary fastener based on the rigid expansion sleeve has the advantages of simple structure, simple production process, low production cost, long service life, convenient operation and high precision.
Further, the driving mechanism further comprises a first coupler, a second coupler and a protective cover; one end of the torque sensor is connected with one end of the first coupler, the other end of the torque sensor is connected with one end of the second coupler, the other end of the first coupler is connected with the shaft of the motor, and the other end of the second coupler is connected with the rotary connecting shaft. The rotation of the coupling transmission motor is more stable, and the protection cover can prevent sundries such as dust, water and the like from polluting, so that the service life is prolonged.
Further, the fastening housing comprises a fastening housing body, a front cover plate and a rear cover plate; the fastening shell body, the front cover plate and the rear cover plate are all cylindrical, the fastening shell body is provided with a first through hole, a second through hole and a third through hole along the axial direction of the fastening shell body, the first through hole, the second through hole and the third through hole are coaxially arranged and communicated, the first through hole and the third through hole are respectively arranged at two ends of the fastening shell body, the second through hole is arranged in the middle, the first through hole is cuboid, the outer diameter of the first through hole is larger than the diameter of the second through hole and communicated, a stepped boss is formed at the communicated position, and the diameter of the third through hole is larger than the outer diameter of the inner magnet; the front cover plate and the rear cover plate are detachably connected with the front end and the rear end of the fastening shell body respectively, the front cover plate and the rear cover plate are provided with cover plate through holes, and the cover plate through holes are coaxially arranged with the first through holes, the second through holes and the third through holes and can be communicated with each other.
Further, the outer magnet comprises a plurality of lobe magnets, and adjacent lobe magnets are different in polarity and are arranged on the outer face of the outer magnet side wall along the outer magnet axial direction. The outer magnet can increase the magnetic force to the inner magnet when rotating.
Further, the inner magnet comprises a plurality of lobe magnets, and adjacent each lobe magnet has different polarities and is arranged on the outer face of the inner magnet side wall along the axial direction of the inner magnet. The inner magnet is more easily driven by the outer magnet.
Further, the fastening mechanism further comprises a spring, and two ends of the spring are respectively abutted against the rigid expansion sleeve and the step boss. The spring can enable the rigid expansion sleeve to have a definite position in the axial direction, and meanwhile the rigid expansion sleeve is more attached to the fastening central shaft without loosening, so that the accuracy and stability of the fastening piece are improved.
Further, the clamping mechanism further comprises a first sliding block, a second sliding block and a clamping guide post; the clamping screw is provided with a first thread and a second thread, the spiral directions of the first thread and the second thread are opposite and are respectively connected with the first slider and the second slider through the screw, the clamping guide pillar is arranged in the clamping support, two ends of the clamping guide pillar are respectively fixed on two side walls of the clamping support, the first slider and the second slider are in sliding connection with the clamping guide pillar, and the top ends of the first slider and the second slider are respectively fixedly connected with the first clamp and the second clamp. The clamping guide posts are added to enter the first sliding block and the second sliding block, so that the sliding stability of the clamping mechanism can be improved, and the accuracy of entering the prefabricated hole of the fastened object can be improved.
For a better understanding and implementation, the present application is described in detail below with reference to the drawings. The rubber cushion block can avoid clamping damage to the fastening shell.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a temporary fastener based on a rigid expansion sleeve according to an embodiment of the application;
FIG. 2 is a partial cross-sectional view of a temporary fastener based on a rigid expansion shell in accordance with an embodiment of the present application;
FIG. 3 is a schematic view of a fastening mechanism according to an embodiment of the present application;
FIG. 4 is a schematic view of a fastening housing according to an embodiment of the present application;
FIG. 5 is a schematic view of a fastening center shaft of a fastening mechanism according to an embodiment of the present application;
FIG. 6 is a schematic view of the structure of a rigid expansion shell of a fastening mechanism according to an embodiment of the present application;
FIG. 7 is a schematic view of a clamping mechanism according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a transmission mechanism according to an embodiment of the present application.
Detailed Description
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "front", "back", "bottom", "top", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
Examples
Referring to fig. 1, a temporary fastener based on a rigid expansion sleeve comprises a driving mechanism 1, a fastening mechanism 2, a clamping mechanism 3 and a transmission mechanism 4. One end of the fastening mechanism 2 is connected with one end of the driving mechanism 1, the driving mechanism 1 drives the fastening mechanism 2 to rotate, and the clamping mechanism 3 clamps and supports the other end of the fastening mechanism 2, so that the fastening mechanism 2 is more stable. The transmission mechanism 4 is connected with the bottom of the driving mechanism 1, can push the driving mechanism 1 to do reciprocating rectilinear motion, and then enables the fastening mechanism 2 to do reciprocating rectilinear motion, and the front end of the fastening mechanism 2 can be inserted into a prefabricated hole of a fastened object and can expand or contract under the action of the rotating power of the driving mechanism 1 and the pushing force of the transmission mechanism 4, so that the fastened object is connected or loosened.
Referring to fig. 1 and 2, the drive mechanism 1 includes a motor 11, a first coupling 12, a torque sensor 13, a second coupling 14, and a protective cover 15. One end of the torque sensor 13 is connected with one end of the first coupler 12, the other end of the torque sensor is connected with one end of the second coupler 14, the other end of the first coupler 12 is connected with the shaft of the motor 11, the other end of the second coupler 14 is connected with the fastening mechanism 2, and the rotation motion of the motor 11 is transmitted to the fastening mechanism 2 and drives the fastening mechanism 2 to do rotation motion. In this embodiment, the motor 11 is preferably a stepping motor, and the motor 11 adjusts the rotation speed or stops according to the value of the torque sensor 13, thereby protecting the fastening mechanism 2 from torsion overload and controlling the strength of the prepared hole into which the fastened object is inserted. The first coupling 12, the torque sensor 13, and the second coupling 14 are disposed in the protective cover 15, so as to prevent contamination of impurities such as dust and water, and to improve the life of the driving mechanism 1, and the motor 11 is fixed to one side of the protective cover 15.
Referring to fig. 3, the fastening mechanism 2 includes a rotary connecting shaft 21, an outer magnet 22, a fastening housing 23, an inner magnet 24, a fastening center shaft 25, a rigid expansion sleeve 26, an expansion-contraction ring 27, and a spring 28. Referring to fig. 2 and 3, one end of the rotary connecting shaft 21 passes through a side wall of the protection cover 15 to be fixedly connected with the second coupling 14, the other end is fixedly connected with the bottom of the outer magnet 22, and the rotary connecting shaft 21 is coaxial with the outer magnet 22, so that the outer magnet 22 is driven to rotate. Referring to fig. 1 and 3, the outer magnet 22 is cylindrical, and is provided with a receiving cavity 221, wherein the receiving cavity 221 penetrates through the top of the outer magnet 22 but not the bottom of the outer magnet 22 along the axial direction of the outer magnet 22, and is used for receiving a part of the fastening shell 23 and the fastening central shaft 25, and also comprises an inner magnet 24, the outer magnet 22 comprises a plurality of magnets with different polarities, and the polarities between adjacent magnets are different and distributed in a circumferential array. The inner magnet 24 is cylindrical, a threaded hole is formed in the middle of the inner magnet 24, the inner magnet 24 also comprises a plurality of magnets with different polarities, and the adjacent magnets are distributed in a circumferential array with different polarities, so that the arrangement can enable the acting magnetic force between the outer magnet 22 and the inner magnet 24 to be larger, and the utilization rate of rotation transmission force is improved.
Referring to fig. 3 and 4, the fastening housing 23 includes a fastening housing body 231, a front cover plate 232 and a rear cover plate 233, the three are cylindrical, the fastening housing body 231 is provided with a first through hole 2311, a second through hole 2312 and a third through hole 2313 along an axial direction thereof, the three through holes are coaxially arranged and communicated, the first through hole 2311 and the third through hole 2313 are respectively arranged at two ends of the fastening housing body 231, the second through hole 2312 is arranged in the middle, the first through hole 2311 is in a cuboid shape, an outer diameter of the first through hole 2311 is larger than a diameter of the second through hole 2312, a stepped boss 23110 is formed at a communicated position and used for fixing one end of a spring 28, the spring 28 is arranged in the first through hole 2311 and embedded on a fastening central shaft 25, and two ends of the spring 28 are respectively abutted against the rigid expansion sleeve 26 and the stepped boss 23110 so as to radially position the rigid expansion sleeve 26. The third through hole 2313 has a diameter larger than an outer diameter of the inner magnet 24 for placing the inner magnet 24, and the inner magnet 24 is coaxial with the third through hole 2313. The front cover plate 232 and the rear cover plate 233 are detachably connected with the front end and the rear end of the fastening housing body 231 respectively, assembly of other parts is facilitated, the front cover plate 232 and the rear cover plate 233 are provided with cover plate through holes, and the cover plate through holes of the front cover plate 232 and the rear cover plate 233 are coaxial with the first through hole 2311, the second through hole 2312 and the third through hole 2313 and are used for fastening the central shaft 25 to penetrate.
Referring to fig. 3 and 5, the fastening center shaft 25 includes a fastening taper section 251, a fastening transition section 252, and a fastening thread section 253. The three sections are coaxially arranged, and two ends of the fastening transition section 252 are fixedly connected with the fastening taper section 251 and the fastening thread section 253 respectively. The fastening taper section 251 is in the form of a truncated cone with a distal outer diameter greater than the outer diameter of the end connected to the fastening transition section 252 for mating with the rigid expansion shell 26. The fastening thread segments 253 are provided with external threads for threaded connection with the internal magnet 24. One end of the fastening center shaft 25 on the fastening thread 253 side passes through the fastening housing 23 to be connected with the rear cover plate 233, when the rotary connecting shaft 21 rotates, the outer magnet 22 is driven to drive, and under the action of magnetic force, the inner magnet 24 also rotates, and the inner magnet 24 is in threaded connection with the fastening center shaft 25, so that the fastening center shaft 25 is driven to slide along the axial direction thereof.
Referring to fig. 3 and 6, the rigid casing 26 includes a first casing 261 and a second casing 262, the first casing 261 and the second casing 262 are identical and disposed opposite each other, and both ends of the first casing 261 and the second casing 262 are radially positioned using expansion and contraction rings 27, respectively. The first expansion sleeve 261 is provided with a taper hole 2611 at one end in the axial direction, the other end is square and matched with the first through hole 2311, so that the rigid expansion sleeve 26 can be prevented from rotating during operation, the taper hole 2611 is matched with the fastening taper section 251 of the fastening central shaft 25, and when the fastening taper section 251 of the fastening central shaft 25 slides in the axial direction of the first expansion sleeve 261 and the second expansion sleeve 262 in the taper hole 2611 of the first expansion sleeve 261 and the second expansion sleeve 262, the first expansion sleeve 261 and the second expansion sleeve 262 can be mutually expanded or closed under the action of the expansion shrink ring 27 and the fastening taper section 251, and therefore radial size change of the rigid expansion sleeve 26 is achieved, one end of the rigid expansion sleeve 26 inserted into a fastened object can be expanded or shrunk, and the fastened object is connected or loosened. The rigid expansion sleeve 26 is divided into the two identical first expansion sleeve 261 and second expansion sleeve 262, so that the manufacturing is simple, the material has no elastic requirement, the cost is low, the heat treatment is not needed, and the machining is convenient and quick. Referring to fig. 3 and 4, rigid expansion sleeve 26 is positioned at one end within first throughbore 2311 and at the other end extends beyond throughbore of front cover 232 for insertion into a preformed hole of a fastened article.
Referring to fig. 1 and 7, the clamping mechanism 3 includes a first clamp 31, a second clamp 32, a first slider 33, a second slider 34, a clamping motor 35, a clamping bracket 36, a clamping screw 37, and a clamping guide post 38. The clamping bracket 36 is in a shell shape and is arranged on one side of the fastening mechanism 2, the bottom of the clamping bracket 36 is fixed on the transmission mechanism 4, the clamping screw 37 is arranged on the lower portion of the clamping bracket 36, two ends of the clamping screw 37 are respectively and rotatably connected with two side walls of the clamping bracket 36, one end of the clamping screw 37 is fixedly connected with an output shaft of the clamping motor 35, and when the clamping motor 35 is started, the clamping screw 37 can rotate. The clamping screw 37 is also provided with a first thread 371 and a second thread 372, the spiral directions of the first thread 371 and the second thread 372 are opposite, and the first thread 371 and the second thread 372 are respectively matched with the lower ends of the first sliding block 33 and the second sliding block 34 to form threaded screw connection. The clamping guide post 38 is disposed in the clamping bracket 36, two ends of the clamping guide post are respectively fixed on two side walls of the clamping bracket 36, and the upper ends of the first sliding block 33 and the second sliding block 34 are both in sliding connection with the clamping guide post 38. The first clamp 31 and the second clamp 32 are identical and oppositely arranged, are respectively fixed at the top ends of the first slide block 33 and the second slide block 34, and when the clamping screw 37 rotates, the first slide block 33 and the second slide block 34 are close to or far away from each other, so that the first clamp 31 and the second clamp 32 are close to or far away from each other, a clamping area is formed between the first clamp 31 and the second clamp 32, and the clamping area is used for clamping or loosening the fastening shell 23 of the fastening mechanism 2, so that the fastening shell moves more stably along the axial direction, and the fastening mechanism 2 is ensured not to shake during working. Referring to fig. 1, 2 and 8, the transmission mechanism 4 includes a fixed base plate 41, a transmission motor 42, a transmission screw 43, a transmission guide 44 and a transmission bearing 45. The number of the transmission bearings 45 is two, the transmission bearings are fixed on the fixed bottom plate 41, two ends of the transmission screw 43 are respectively and rotatably connected with the two transmission bearings 45, one end of the transmission guide rail 44 is fixedly connected with an output shaft of the transmission motor 42, and the transmission screw 43 passes through the protection cover 15 and is in screw transmission connection with the protection cover. The number of the transmission guide rails 44 is two, the two transmission guide rails 44 are fixed on the fixed bottom plate 41, the two transmission guide rails are respectively arranged on two sides of the transmission screw 43 and are parallel to the axial direction of the transmission screw, the top ends of the transmission guide rails 44 are in sliding connection with the protection cover 15 of the driving mechanism 1, when the transmission motor 42 drives the transmission screw 43 to rotate, the protection cover 15 makes reciprocating linear motion, and further the whole driving mechanism 1 and the fastening mechanism 2 also make reciprocating linear motion along the sliding direction of the transmission guide rails 44, so that the front end part of the fastening mechanism 2 comprises a rigid expansion sleeve 26 and a fastening central shaft 25 which can extend into or be far away from a prefabricated hole of a fastening object.
Referring to fig. 1 to 8, a temporary fastener based on a rigid expansion sleeve works on the principle that: the temporary fastener based on the rigid expansion sleeve is started, the clamping motor 35 rotates positively to enable the first clamp 31 and the second clamp 32 to be in a loosening state, the transmission motor 42 rotates positively, the transmission screw 43 rotates positively, the driving mechanism 1 and the fastening mechanism 2 slide forwards, the rigid expansion sleeve 26 and the fastening central shaft 25 extend into a prefabricated hole of a fastened object, the clamping motor 35 rotates reversely to enable the first clamp 31 and the second clamp 32 to clamp the fastening shell 23, then the motor 11 rotates positively, the first coupler 12 and the second coupler 14 rotate along, the outer magnet 22 is driven to rotate, the inner magnet 24 rotates along with the effect of magnetic force, the fastening central shaft 25 slides backwards along the axial direction of the inner magnet under the effect of the transmission of the screw, the fastening taper section 251 slides backwards to open the first expansion sleeve 261 and the second expansion sleeve 262, and the rigid expansion sleeve 26 expands, so that the fastened object is fixed. When the fastened object needs to be separated, the motor 11 is reversely rotated, the inner magnet 24 is reversely rotated, the fastening central shaft 25 slides forward along the axial direction of the inner magnet, the fastening taper section 251 slides forward, the first expanding sleeve 261 and the second expanding sleeve 262 are closed, the rigid expanding sleeve 26 is contracted, the transmission motor 42 is reversely rotated, the transmission screw 43 reversely rotates, the driving mechanism 1 and the fastening mechanism 2 slide backward, the rigid expanding sleeve 26 and the fastening central shaft 25 are withdrawn out of the prefabricated hole of the fastened object, and the clamping motor 35 positively rotates to enable the first clamp 31 and the second clamp 32 to be in a loosening state.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the spirit of the application, and the application is intended to encompass such modifications and improvements.
Claims (4)
1. A temporary fastener based on rigid expansion sleeve, characterized in that: comprises a driving mechanism, a fastening mechanism, a clamping mechanism and a transmission mechanism;
the driving mechanism comprises a motor and a torque sensor; one end of the torque sensor is connected with one end of the motor;
the fastening mechanism comprises a rotary connecting shaft, an outer magnet, a fastening shell, an inner magnet, a fastening central shaft, a rigid expansion sleeve and an expansion and contraction ring;
one end of the rotary connecting shaft is connected with the other end of the torque sensor, and the other end of the rotary connecting shaft is fixedly connected with the bottom of the outer magnet; the outer magnet is cylindrical, and is provided with a containing cavity along the axial direction, and the containing cavity penetrates through the top of the outer magnet but does not penetrate through the bottom of the outer magnet;
the fastening shell is cylindrical, a through hole is formed in the axial direction of the fastening shell, the inner magnet is arranged in one end of the fastening shell and can coaxially rotate, one end of the fastening central shaft penetrates through the through hole to be in threaded connection with the inner magnet, and the other end of the fastening central shaft is provided with a fastening taper section; one end of the fastening shell, which is provided with the inner magnet, is embedded in the accommodating cavity and is coaxially arranged; the fastening shell comprises a fastening shell body, a front cover plate and a rear cover plate; the fastening shell body, the front cover plate and the rear cover plate are all cylindrical, the fastening shell body is provided with a first through hole, a second through hole and a third through hole along the axial direction of the fastening shell body, the first through hole, the second through hole and the third through hole are coaxially arranged and communicated, the first through hole and the third through hole are respectively arranged at two ends of the fastening shell body, the second through hole is arranged in the middle, the first through hole is cuboid, the outer diameter of the first through hole is larger than the diameter of the second through hole and communicated, a stepped boss is formed at the communicated position, and the diameter of the third through hole is larger than the outer diameter of the inner magnet; the front cover plate and the rear cover plate are respectively and detachably connected with the front end and the rear end of the fastening shell body, the front cover plate and the rear cover plate are both provided with cover plate through holes, and the cover plate through holes are coaxially arranged with the first through holes, the second through holes and the third through holes and can be communicated with each other;
the fastening mechanism further comprises a spring, and two ends of the spring are respectively abutted against the rigid expansion sleeve and the step boss;
the rigid expansion sleeve comprises a first expansion sleeve and a second expansion sleeve; the first expansion sleeve and the second expansion sleeve are identical and are oppositely arranged, two ends of the first expansion sleeve and two ends of the second expansion sleeve are respectively fixed by using the expansion shrink rings, the first expansion sleeve is provided with a taper hole along the axial direction, the taper hole is matched with the fastening taper section, and the first expansion sleeve and the second expansion sleeve can be mutually opened or closed when the fastening taper section slides along the axial direction;
the clamping mechanism comprises a first clamp, a second clamp, a clamping screw, a clamping bracket and a clamping motor; the clamping support is arranged on one side of the fastening mechanism and is fixed on the transmission mechanism, the clamping screw rod penetrates through the clamping support, two ends of the clamping screw rod are respectively and rotatably connected with two side walls of the clamping support, one end of the clamping screw rod is fixedly connected with an output shaft of the clamping motor, the first clamp and the second clamp are respectively connected with the threaded screw rod of the clamping screw rod, and the first clamp and the second clamp are oppositely arranged and can be mutually close to or far away from each other to form a clamping area; the clamping mechanism further comprises a first sliding block, a second sliding block and a clamping guide post; the clamping screw is provided with a first thread and a second thread, the spiral directions of the first thread and the second thread are opposite and are respectively connected with the first slider and the second slider through the screw, the clamping guide pillar is arranged in the clamping bracket, two ends of the clamping guide pillar are respectively fixed on two side walls of the clamping bracket, the first slider and the second slider are in sliding connection with the clamping guide pillar, and the top ends of the first slider and the second slider are respectively fixedly connected with the first clamp and the second clamp;
the transmission mechanism comprises a fixed bottom plate, a transmission motor, a transmission screw, a transmission guide rail and a transmission bearing; the transmission bearing is fixed on the fixed bottom plate, two ends of the transmission screw are rotationally connected with the transmission bearing, one end of the transmission screw is fixedly connected with an output shaft of the transmission motor, the transmission screw is in transmission connection with the driving mechanism screw, the transmission guide rail is arranged on two sides of the transmission screw and is parallel to the axial direction of the transmission screw, and the top end of the transmission guide rail is in sliding connection with the driving mechanism.
2. A temporary fastener based on rigid expansion shells according to claim 1, characterized in that: the driving mechanism further comprises a first coupler, a second coupler and a protective cover; one end of the torque sensor is connected with one end of the first coupler, the other end of the torque sensor is connected with one end of the second coupler, the other end of the first coupler is connected with the shaft of the motor, and the other end of the second coupler is connected with the rotary connecting shaft.
3. A temporary fastener based on rigid expansion shells according to claim 1, characterized in that: the outer magnet comprises a plurality of split magnets, and the adjacent split magnets are different in polarity and are arranged on the outer surface of the side wall of the outer magnet along the axial direction of the outer magnet.
4. A temporary fastener based on rigid expansion shells according to claim 1, characterized in that: the inner magnet comprises a plurality of split magnets, and the adjacent split magnets are different in polarity and are arranged on the outer surface of the side wall of the inner magnet along the axial direction of the inner magnet.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211302246.5A CN115674097B (en) | 2022-10-24 | 2022-10-24 | Temporary fastener based on rigid expansion sleeve |
| FR2311371A FR3141221A1 (en) | 2022-10-24 | 2023-10-20 | TEMPORARY FIXATION ELEMENT BASED ON A RIGID EXPANSION SLEEVE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211302246.5A CN115674097B (en) | 2022-10-24 | 2022-10-24 | Temporary fastener based on rigid expansion sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115674097A CN115674097A (en) | 2023-02-03 |
| CN115674097B true CN115674097B (en) | 2023-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211302246.5A Active CN115674097B (en) | 2022-10-24 | 2022-10-24 | Temporary fastener based on rigid expansion sleeve |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115674097B (en) |
| FR (1) | FR3141221A1 (en) |
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2022
- 2022-10-24 CN CN202211302246.5A patent/CN115674097B/en active Active
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- 2023-10-20 FR FR2311371A patent/FR3141221A1/en active Pending
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| WO2016019920A1 (en) * | 2014-08-08 | 2016-02-11 | 杨东佐 | Expansion fastening connection structure and connection method, and expansion fastening connection assembly |
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Also Published As
| Publication number | Publication date |
|---|---|
| FR3141221A1 (en) | 2024-04-26 |
| CN115674097A (en) | 2023-02-03 |
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