CN106523508A - Falling-prevention bolt set and assembly method thereof - Google Patents
Falling-prevention bolt set and assembly method thereof Download PDFInfo
- Publication number
- CN106523508A CN106523508A CN201611102877.7A CN201611102877A CN106523508A CN 106523508 A CN106523508 A CN 106523508A CN 201611102877 A CN201611102877 A CN 201611102877A CN 106523508 A CN106523508 A CN 106523508A
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- bolt
- connected piece
- pad
- screw
- drop
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 125000006850 spacer group Chemical group 0.000 claims description 58
- 208000031481 Pathologic Constriction Diseases 0.000 claims description 6
- 210000001215 vagina Anatomy 0.000 claims description 6
- 238000005553 drilling Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Classifications
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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
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/24—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
-
- 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
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/06—Specially-shaped heads
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
- Toys (AREA)
Abstract
The invention discloses a falling-prevention bolt set and an assembly method thereof. The falling-prevention bolt set is used for connecting a first connected part with a second connected part and comprises a bolt, a washer, a threaded gasket and a nut. The bolt sequentially penetrates through mounting holes of the washer, the first connected part, the threaded gasket and the second connected part. The mounting hole of the threaded gasket is provided with a thread matched with a thread on a screw of the bolt. The washer, the first connected part and the threaded gasket are fastened between the second connected part and the bolt head of the bolt. The nut is arranged at the bottom of the second connected part. The surface of the part, close to the bolt head, of the screw of the bolt is a smooth surface, and the rest of the surface of the screw is a threaded surface. The nut is fastened to the threaded surface of the bolt. The length of the smooth surface is greater than the sum of thicknesses of the washer, the threaded gasket and the first connected part. The outer diameter of the smooth surface is smaller than that of the threaded surface. Through the falling-prevention bolt set and the assembly method thereof, the technical problem that bolts, nuts and washers of bolt connecting structures needing to be dismounted frequently need to be taken down and are liable to fall and be lost during dismount is solved.
Description
Technical field
The present invention relates to tightening member field, more particularly, to a kind of anti-drop bolt group for being applied to be mechanically connected and its
Assembly method.
Background technology
Bolt connection is the typical machine connected mode for being widely used in various occasions, and modal securing member is bolt group
（Including plain bolt and nut）, its production increasingly scale, standardization.Bolt group is used as a kind of traditional combination type fastening
Part needs to remove bolt group in dismounting, and the bolt group removed can be positioned over an interim position, will be taken during installation again
Under bolt be reinstalled.It is that the bolt group removed easily is lost that conventional bolt is fastenedly connected the shortcoming of mode, or even falls into and set
The normal work and safety of standby middle impact equipment.Meanwhile, if when bolt group quantity is more, this repetition removed and reinstall
Journey also can be lost time and manpower in large quantities.
In the prior art, substantial amounts of document concentrates on bolt, the nut how locking slip-off preventing under tight condition, especially
During which is vibration environment, and the bolt fastening structure of slip-off preventing then studies very few after being directed to dismounting.
Document 1 applies on November 08th, 2010 for middle Shan Shilanmu auto parts and components company limited, and in 2011 05
The moon 18 was announced, Chinese invention patent of the notification number for CN201836189U《A kind of anti-loosening structure for screw of switch valve》.Should
The anti-loosening structure for screw of patent of invention description carries out slip-off preventing using the multiple screens projections for being arranged on bolt hole inwall, but
The shortcoming of this structure is that screw thread and screens projection Long Term Contact friction will cause anti-drop structure serious wear, is easily failed.
Document 2 is that Jiangsu Lifu Electrod Foil Co., Ltd. applied on 07 25th, 2013, and on October 01st, 2014
Bulletin, Chinese invention patent of the notification number for CN203856858U《A kind of bolt anticreep drop piece》.The patent of invention is by spiral shell
A nut is fixed in the middle of bar, and fixing a L-type limiting plate on connected piece surface carries out slip-off preventing.But this structure is scarce
Point is to take up room larger, and the spacing panel stiffness of L-type is low, and really act the effect of tightening is the nut of fixation in the middle of screw rod, to spiral shell
Female stationarity improves requirement, and rundown process is inconvenient to operate.
Document 3 is that Quzhou Di Ding Electronic Science and Technology Co., Ltd.s applied on 06 16th, 2015, and in November 25 in 2015
Day is announced, Chinese invention patent of the notification number for CN204805261U《A kind of anti-drop bolt group》.The patent of invention slip-off preventing
Bolt group, including bolt block, screw rod, nut, anti-drop rod and drilling rod and drill bit, bolt block is cylindrical shape, on the right side of bolt block
It is connected with screw rod, on screw rod, is arranged with nut, screw rod is provided with screw thread, is connected with anti-drop rod on the right side of screw rod, anti-drop rod is right
Side is connected with drilling rod, and the end of drilling rod is provided with drill bit, and drill bit is sharp shape.But the shortcoming of the structure is adopted spiral shell
Bar complex structure, is obtained by non-standard screw rod or with master screw processing, and processing cost is very high.And its objective is to prevent
Nut is released and is dropped, and is not to prevent screw rod from coming off.
Document 3 applies on November 18th, 2014 for Quzhou Di Ding Electronic Science and Technology Co., Ltd.s, and in 05 month 2015 06
Day is announced, Chinese invention patent of the notification number for CN204312514U《A kind of anti-drop bolt group》.The patent of invention slip-off preventing
Bolt group, including：One sleeve and an Anti-off bolt, sleeve are provided with a sleeve body, and sleeve body is a vertical circular body,
The bottom of sleeve body is outwardly around one support of projection, one anticreep protuberance of inwall bottom projection inwardly of sleeve body.Anticreep spiral shell
Bolt is provided with a body of rod, and the body of rod is passed perpendicularly through to put and stayed in the sleeve, and the periphery on body of rod top is provided with a screw thread.In the body of rod
Between one card division of periphery projection, card division is against downwards the top side of anticreep protuberance, and the bottom of the body of rod stretches out sleeve down.The body of rod
Bottom is provided with a head, and the width of head is more than the internal diameter of sleeve body.But the shortcoming of this structure is the shape of sleeve used
Shape is complicated, and when connected piece is relatively thin, sleeve cannot be embedded in, therefore the anti-drop bolt group structure is not suitable for thinner thickness
Connected piece.
The content of the invention
In view of this, it is an object of the invention to provide a kind of anti-drop bolt group and its assembly method, to solve needs
Need to remove when the bolts normal on the bolt fastening structure of dismounting of Jing, nut, shim disassembling, and the technology of loss easy to fall off is asked
Topic.
In order to realize foregoing invention purpose, the present invention specifically provides a kind of technic relization scheme of anti-drop bolt group,
A kind of anti-drop bolt group, for connecting connected piece one and connected piece two, including：Bolt, pad, thread spacer and spiral shell
It is female.The installing hole of pad, connected piece one, thread spacer and connected piece two described in the screw bolt passes, the screw thread
The screw thread being engaged with the screw flight of the bolt is provided with the installing hole of pad.The pad, connected piece one and spiral shell
Stricture of vagina pad is anchored between the bolt head of the bolt and the connected piece two, and the nut is arranged at the connected piece two
Bottom.Screw surface of the bolt near bolt head position is shiny surface, and remaining position of the screw surface is screw thread
Face, the nut are anchored on the flank of the bolt.The length of the shiny surface is more than the pad, thread spacer and is connected
The thickness sum of fitting one, the external diameter of the shiny surface are less than the external diameter of the flank.
Preferably, the screw edge that the nut is contacted with the connected piece two on the end face of one end is provided with jut,
The jut is embedded in the installing hole of the connected piece two.
The present invention also specifically provides the technic relization scheme of another kind of anti-drop bolt group, a kind of anti-drop bolt group,
For connecting connected piece one and connected piece two, including：Bolt, pad and thread spacer.Described in the screw bolt passes
The installing hole of pad, connected piece one and thread spacer, is provided with the spiral shell with the bolt on the installing hole of the thread spacer
The screw thread that bar screw thread is engaged.The pad, connected piece one and thread spacer be anchored on the bolt head of the bolt with it is described
Between connected piece two.The bolt near bolt head position screw surface be shiny surface, its remaining part of the screw surface
Position is flank, and the installing hole of the connected piece two is screw, and the connected piece two is anchored on the flank of the bolt.
Thickness sum of the length of the shiny surface more than the pad, thread spacer and connected piece one, the external diameter of the shiny surface
Less than the external diameter of the flank.
Preferably, the bolt is adopted including any one bolt including round end, coiled hair, trough, interior hexagonal, outer-hexagonal.
Preferably, spring shim is additionally provided between the bolt head and the pad of the bolt.
Preferably, the pad is flat shim.
Preferably, it is arranged in the installing hole for penetrating the connected piece one afterwards in the bolt and the pad, by institute
State in the screw rod that thread spacer screws in the bolt, after being threaded to the shiny surface of the screw rod, the threaded insert cannot be certainly
It is by the screw flight face is exited, spacing so as to carry out to the pad, thread spacer, to prevent the bolt, pad, spiral shell
Stricture of vagina pad departs from the connected piece one.
The present invention also specifically provides the technic relization scheme that a kind of above-mentioned anti-drop bolt assembles method of completing the square in addition, a kind of
Anti-drop bolt assembles method of completing the square, comprises the following steps：
Penetrate after be set in the installing hole of connected piece one；
Thread spacer is screwed in the screw rod of the bolt, is freely placed after being threaded to the shiny surface of the screw rod, complete institute
The assembling of anti-drop bolt group is stated, now the threaded insert cannot freely exit the screw flight face.
Preferably, when the anti-drop bolt group is installed, the screw rod of the bolt is penetrated into the installation of connected piece two
Hole, and being fastened by nut, by the pad, connected piece one and thread spacer be anchored on the bolt head of the bolt with
Between the connected piece two.When the anti-drop bolt group is dismantled, the bolt is screwed out into the peace of the connected piece two
Dress hole, the threaded insert cannot freely exit the screw flight face, so as to limit to the pad, thread spacer
Position, to prevent the bolt, pad, thread spacer from departing from the connected piece one.
The present invention also specifically provides the technic relization scheme that above-mentioned another kind of anti-drop bolt assembles method of completing the square, Yi Zhongfang
The bolt that comes off assembles method of completing the square, comprises the following steps：
Penetrate after be set in the installing hole of connected piece one；
Thread spacer is screwed in the screw rod of the bolt, is freely placed after being threaded to the shiny surface of the screw rod, complete institute
The assembling of anti-drop bolt group is stated, now the threaded insert cannot freely exit the screw flight face.
Preferably, when the anti-drop bolt group is installed, the screw rod of the bolt is screwed in into the installation of connected piece two
Hole, the pad, connected piece one and thread spacer are anchored between the bolt head of the bolt and the connected piece two.
When the anti-drop bolt group is dismantled, the bolt is screwed out into the installing hole of the connected piece two, the threaded insert without
Method freely exits the screw flight face, spacing so as to carry out to the pad, thread spacer, to prevent the bolt, pad
Piece, thread spacer depart from the connected piece one.
By implementing the technical scheme of anti-drop bolt group that the invention described above provides and its assembly method, with having as follows
Beneficial effect：
（1）Present invention bolt when can effectively prevent bolt assembling and dismantling from unloading, nut, pad come off and lose；
（2）The present invention can significantly shorten the man-hour of scene assembly and disassembly bolt group；
（3）The present invention improves the safety of the reliability of bolt set product and bolt disassembly operation.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Accompanying drawing to be used needed for having technology description is briefly described.It should be evident that drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other embodiments are obtained according to these accompanying drawings.
Fig. 1 is a kind of cross-sectional view of specific embodiment of anti-drop bolt group of the present invention；
Fig. 2 is a kind of dimensional structure diagram of specific embodiment of anti-drop bolt group of the present invention；
Fig. 3 is a kind of assembling structure schematic diagram of specific embodiment of anti-drop bolt group of the present invention；
Fig. 4 is the cross-sectional view of anti-drop bolt group another kind specific embodiment of the present invention；
Fig. 5 is the cross-sectional view of the third specific embodiment of anti-drop bolt group of the present invention；
In figure：1- bolts, 2- pads, 3- connected pieces one, 4- thread spacers, 5- connected pieces two, 6- nuts, 7- juts,
8- spring shims.
Specific embodiment
For making purpose, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, clear, complete description is carried out to the technical scheme in the embodiment of the present invention.Obviously, described embodiment is only
Only it is a part of embodiment of the present invention, rather than the embodiment of whole.Based on the embodiment in the present invention, the common skill in this area
All other embodiment that art personnel are obtained under the premise of creative work is not made, belongs to the model of present invention protection
Enclose.
As shown in accompanying drawing 1 to accompanying drawing 5, the specific embodiment of anti-drop bolt group of the present invention and its assembly method is given,
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
As shown in accompanying drawing 1,2 and 3, a kind of specific embodiment of anti-drop bolt group, for connecting connected piece 1 and being connected
Part 25, anti-drop bolt group include：One 1, one, bolt, 2, one, pad thread spacer 4 and one are fixed on connected piece
25 nut 6, bolt 1 sequentially pass through the installing hole of pad 2, connected piece 1, thread spacer 4 and connected piece 25.Pad
2nd, connected piece 1 and thread spacer 4 are anchored between the bolt head of bolt 1 and connected piece 25.Nut 6 is arranged at and is connected
The bottom of fitting 25.Used as a kind of preferably specific embodiment of the invention, nut 6 can be embedded on connected piece 25, and
Realize being fixedly connected with connected piece 25 by welding manner.Screw surface of the bolt 1 near bolt head position is shiny surface,
Remaining position of screw surface is flank, and nut 6 is anchored on the flank of bolt 1.The length of shiny surface slightly larger than pad 2,
The thickness sum of thread spacer 4 and connected piece 1, the external diameter of shiny surface are slightly less than the external diameter of flank.The peace of thread spacer 4
Dress is provided with screw thread on hole, and the screw thread is engaged with the screw flight of bolt 1.
Bolt 1 can be processed into by choosing in GB5782 standards or using the screw bolt in GB5783 standards,
And further using including any one bolt including round end, coiled hair, trough, interior hexagonal, outer-hexagonal.Pad 2 is further adopted
Common flat shim, can choose from standard or using from gasket.Nut 6 is contacted on the end face of one end with connected piece 25
Screw edge is provided with jut 7, and jut 7 is embedded in the installing hole of connected piece 25, and jut 7 is used for providing being oriented to be determined
Position, to facilitate the welding of nut 6.It is arranged in the installing hole for penetrating connected piece 1 afterwards in bolt 1 and pad 2, by screw thread pad
Piece 4 is screwed in the screw rod of bolt 1, after being threaded to the shiny surface of screw rod, is freely placed.When seated, anti-drop bolt group is being just
Often installed.When disassembled, after bolt 1 screws out connected piece 25, because threaded insert 4 cannot freely exit the spiral shell of screw rod
Stricture of vagina face, it is spacing so as to carry out to pad 2, thread spacer 4, to prevent bolt 1, pad 2, thread spacer 4 from departing from connected piece one
3。
As shown in Figure 4, example is preferably embodied as one kind of the invention, can also further in the spiral shell of bolt 1
Spring shim 8 is set between bolt head and pad 2, to reach locking purpose.
The above embodiment of the present invention gives a kind of convenient dismounting, dismantles the slip-off preventing that rear bolt 1 and pad 2 need not be removed
Bolt group, by spacing using thread spacer 4, realizes the slip-off preventing of bolt group.Bolt 1 after under anti-drop bolt assembling and dismantling and
Pad 2 is still retained on former installing hole, be will not fall off, is not required to remove, not easy to lose, is very easy to Field Force's freedom
Assembly and disassembly bolt 1, not only can shorten the man-hour of scene assembly and disassembly bolt 1, be also prevented from bolt 1, the loss of pad 2, increase
While product reliability, the safety of equipment and operation is also improved.
Embodiment 2
It is a kind of that the specific embodiment that anti-drop bolt described in example 1 assembles method of completing the square is performed as described above, comprise the following steps：
Penetrate after pad 2 is set in the screw rod of bolt 1 in the installing hole of connected piece 1；
Thread spacer 4 is screwed in the screw rod of bolt 1, is freely placed after being threaded to the shiny surface of screw rod, complete slip-off preventing spiral shell
The assembling of bolt group, now threaded insert 4 cannot freely exit the screw flight face；
When anti-drop bolt group is installed, the screw rod of bolt 1 is penetrated into the installing hole of connected piece 25, and is carried out by nut 6
Fastening, pad 2, connected piece 1 and thread spacer 4 are anchored between the bolt head of bolt 1 and connected piece 25；
When anti-drop bolt group is dismantled, bolt 1 is screwed out into the installing hole of connected piece 25, threaded insert 4 freely cannot be exited
Screw flight face, it is spacing so as to carry out to pad 2, thread spacer 4, to prevent bolt 1, pad 2, thread spacer 4 from departing from quilt
Connector 1.
Embodiment 3
As shown in Figure 5, when 25 thickness of connected piece is thicker, can directly attack and bolt on the installing hole of connected piece 25
The female thread that 1 screw flight face is engaged, and without the need for welded nut 6.A kind of anti-drop bolt group, for connecting connected piece
One 3 and connected piece 25, including：Bolt 1, pad 2 and thread spacer 4, bolt 1 sequentially pass through pad 2, one 3 and of connected piece
The installing hole of thread spacer 4.Pad 2, connected piece 1 and thread spacer 4 are anchored on the bolt head and connected piece two of bolt 1
Between 5.Screw surface of the bolt 1 near bolt head position is shiny surface, and remaining position of screw surface is flank, is connected
Part 25 is anchored on the flank of bolt 1.The length of shiny surface more than pad 2, thread spacer 4 and connected piece 1 thickness it
With the external diameter of shiny surface is less than the external diameter of flank.
Embodiment 4
It is a kind of that the specific embodiment that anti-drop bolt described in example 3 assembles method of completing the square is performed as described above, comprise the following steps：
Penetrate after pad 2 is set in the screw rod of bolt 1 in the installing hole of connected piece 1；
Thread spacer 4 is screwed in the screw rod of bolt 1, is freely placed after being threaded to the shiny surface of screw rod, complete slip-off preventing spiral shell
The assembling of bolt group, now threaded insert 4 cannot freely exit screw flight face.
When anti-drop bolt group is installed, the screw rod of bolt 1 is screwed in into the installing hole of connected piece 25, by pad 2, quilt
Connector 1 and thread spacer 4 are anchored between the bolt head of bolt 1 and connected piece 25；
When anti-drop bolt group is dismantled, bolt 1 is screwed out into the installing hole of connected piece 25, threaded insert 4 freely cannot be exited
Screw flight face, it is spacing so as to carry out to pad 2, thread spacer 4, to prevent bolt 1, pad 2, thread spacer 4 from departing from quilt
Connector 1.
By implementing the technical scheme of the anti-drop bolt group and its assembly method of specific embodiment of the invention description, can
Produce following technique effect：
（1）When the anti-drop bolt group and its assembly method of specific embodiment of the invention description can effectively prevent bolt assembling and dismantling from unloading
Bolt, nut, pad come off and lose；
（2）The anti-drop bolt group and its assembly method of specific embodiment of the invention description can significantly shorten scene assembly and disassembly bolt
The man-hour of group；
（3）The anti-drop bolt group and its assembly method of specific embodiment of the invention description improve the reliability of bolt set product
With the safety of bolt disassembly operation.
In this specification, each embodiment is described by the way of progressive, and what each embodiment was stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The above, is only presently preferred embodiments of the present invention, not makees any pro forma restriction to the present invention.Though
So the present invention is disclosed as above with preferred embodiment, but is not limited to the present invention.It is any to be familiar with those skilled in the art
Member, in the case of the spirit and technical scheme without departing from the present invention, using in the methods and techniques of the disclosure above
Appearance makes many possible variations and modification, or the Equivalent embodiments for being revised as equivalent variations to technical solution of the present invention.Therefore,
Every content without departing from technical solution of the present invention, according to the technical spirit of the present invention to made for any of the above embodiments any simple
Modification, equivalent, equivalence changes and modification, still fall within the scope of technical solution of the present invention protection.
Claims (11)
1. a kind of anti-drop bolt group, for connecting connected piece one（3）With connected piece two（5）, it is characterised in that include：
Bolt（1）, pad（2）, thread spacer（4）And nut（6）；The bolt（1）Sequentially pass through the pad（2）, connected piece
One（3）, thread spacer（4）With connected piece two（5）Installing hole, the thread spacer（4）Installing hole on be provided with and institute
State bolt（1）The screw thread that is engaged of screw flight；The pad（2）, connected piece one（3）And thread spacer（4）It is anchored on
The bolt（1）Bolt head and the connected piece two（5）Between, the nut（6）It is arranged at the connected piece two（5）
Bottom；The bolt（1）Screw surface near bolt head position is shiny surface, and remaining position of the screw surface is spiral shell
Stricture of vagina face, the nut（6）It is anchored on the bolt（1）Flank；The length of the shiny surface is more than the pad（2）, spiral shell
Stricture of vagina pad（4）With connected piece one（3）Thickness sum, the external diameter of the external diameter of the shiny surface less than the flank.
2. anti-drop bolt group according to claim 1, it is characterised in that：The nut（6）With the connected piece two
（5）Screw edge on contact one end end face is provided with jut（7）, the jut（7）The embedded connected piece two（5）
Installing hole in.
3. a kind of anti-drop bolt group, for connecting connected piece one（3）With connected piece two（5）, it is characterised in that include：
Bolt（1）, pad（2）And thread spacer（4）；The bolt（1）Sequentially pass through the pad（2）, connected piece one（3）And spiral shell
Stricture of vagina pad（4）Installing hole, the thread spacer（4）Installing hole on be provided with and the bolt（1）Screw flight match
The screw thread of conjunction；The pad（2）, connected piece one（3）And thread spacer（4）It is anchored on the bolt（1）Bolt head and institute
State connected piece two（5）Between；The bolt（1）Near bolt head position screw surface be shiny surface, the screw surface
Remaining position be flank, the connected piece two（5）Installing hole be screw, the connected piece two（5）It is anchored on institute
State bolt（1）Flank；The length of the shiny surface is more than the pad（2）, thread spacer（4）With connected piece one（3）
Thickness sum, the external diameter of the external diameter of the shiny surface less than the flank.
4. the anti-drop bolt group according to any one of claim 1,2 or 3, it is characterised in that：The bolt（1）Using
Including any one bolt including round end, coiled hair, trough, interior hexagonal, outer-hexagonal.
5. anti-drop bolt group according to claim 4, it is characterised in that：In the bolt（1）Bolt head with it is described
Pad（2）Between be additionally provided with spring shim（8）.
6. anti-drop bolt group according to claim 5, it is characterised in that：The pad（2）For flat shim.
7. the anti-drop bolt group according to any one of claim 1,2,3,5 or 6, it is characterised in that：In the bolt
（1）With the pad（2）The connected piece one is penetrated after being arranged（3）Installing hole in, by the thread spacer（4）Screw in
The bolt（1）Screw rod in, after being threaded to the shiny surface of the screw rod, the threaded insert（4）Institute cannot freely be exited
Screw flight face is stated, so as to the pad（2）, thread spacer（4）Carry out it is spacing, to prevent the bolt（1）, pad
（2）, thread spacer（4）Depart from the connected piece one（3）.
8. a kind of assembly method of anti-drop bolt group as claimed in claim 1 or 2, it is characterised in that comprise the following steps：
By pad（2）It is set in bolt（1）Screw rod in after penetrate connected piece one（3）Installing hole in；
By thread spacer（4）Screw in the bolt（1）Screw rod in, freely place after being threaded to the shiny surface of the screw rod,
The assembling of the anti-drop bolt group is completed, now the threaded insert（4）The screw flight face cannot freely be exited.
9. anti-drop bolt according to claim 8 assembles method of completing the square, it is characterised in that：
When the anti-drop bolt group is installed, by the bolt（1）Screw rod penetrate connected piece two（5）Installing hole, and
By nut（6）Fastened, by the pad（2）, connected piece one（3）And thread spacer（4）It is anchored on the bolt（1）
Bolt head and the connected piece two（5）Between；
When the anti-drop bolt group is dismantled, by the bolt（1）Screw out the connected piece two（5）Installing hole, it is described
Threaded insert（4）The screw flight face cannot be freely exited, so as to the pad（2）, thread spacer（4）Limited
Position, to prevent the bolt（1）, pad（2）, thread spacer（4）Depart from the connected piece one（3）.
10. a kind of assembly method of anti-drop bolt group as claimed in claim 3, it is characterised in that comprise the following steps：
By pad（2）It is set in bolt（1）Screw rod in after penetrate connected piece one（3）Installing hole in；
By thread spacer（4）Screw in the bolt（1）Screw rod in, freely place after being threaded to the shiny surface of the screw rod,
The assembling of the anti-drop bolt group is completed, now the threaded insert（4）The screw flight face cannot freely be exited.
11. anti-drop bolts according to claim 10 assemble method of completing the square, it is characterised in that：
When the anti-drop bolt group is installed, by the bolt（1）Screw rod screw in connected piece two（5）Installing hole, will
The pad（2）, connected piece one（3）And thread spacer（4）It is anchored on the bolt（1）Bolt head and the connected piece
Two（5）Between；
When the anti-drop bolt group is dismantled, by the bolt（1）Screw out the connected piece two（5）Installing hole, it is described
Threaded insert（4）The screw flight face cannot be freely exited, so as to the pad（2）, thread spacer（4）Limited
Position, to prevent the bolt（1）, pad（2）, thread spacer（4）Depart from the connected piece one（3）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (5)
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| CN107882842A (en) * | 2017-12-19 | 2018-04-06 | 中国矿业大学 | Unilateral bolt clamp device |
| CN108716485A (en) * | 2018-05-21 | 2018-10-30 | 中车青岛四方车辆研究所有限公司 | Fan unit mounting structure and its mounting assembly |
| CN109854607A (en) * | 2018-12-28 | 2019-06-07 | 天津市盛立达机械设备有限公司 | Push against detent Anti-off bolt |
| CN110451608A (en) * | 2018-05-08 | 2019-11-15 | 罗民雄 | A kind of easy-to-dismount electrolyte electrode module installation method |
| CN112628252A (en) * | 2020-12-28 | 2021-04-09 | 中国航发沈阳发动机研究所 | Connecting assembly and connecting structure thereof |
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| CN110451608A (en) * | 2018-05-08 | 2019-11-15 | 罗民雄 | A kind of easy-to-dismount electrolyte electrode module installation method |
| CN108716485A (en) * | 2018-05-21 | 2018-10-30 | 中车青岛四方车辆研究所有限公司 | Fan unit mounting structure and its mounting assembly |
| CN109854607A (en) * | 2018-12-28 | 2019-06-07 | 天津市盛立达机械设备有限公司 | Push against detent Anti-off bolt |
| CN112628252A (en) * | 2020-12-28 | 2021-04-09 | 中国航发沈阳发动机研究所 | Connecting assembly and connecting structure thereof |
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| Publication number | Publication date |
|---|---|
| CN106523508B (en) | 2018-10-26 |
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