CN104314941A - Blind hole expansion bolt for connecting thermonuclear fusion reactor - Google Patents
Blind hole expansion bolt for connecting thermonuclear fusion reactor Download PDFInfo
- Publication number
- CN104314941A CN104314941A CN201410425327.3A CN201410425327A CN104314941A CN 104314941 A CN104314941 A CN 104314941A CN 201410425327 A CN201410425327 A CN 201410425327A CN 104314941 A CN104314941 A CN 104314941A
- Authority
- CN
- China
- Prior art keywords
- bolt
- expansion sleeve
- expansion
- nut
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000004927 fusion Effects 0.000 title claims abstract description 16
- 229910000963 austenitic stainless steel Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
Abstract
The invention discloses a blind hole expansion bolt for connecting a thermonuclear fusion reactor. The blind hole expansion bolt mainly comprises a nut, a bolt and an expansion sleeve, wherein the middle section of the bolt is conical; the upper-middle section of the bolt is of an octagonal plane shape; the upper end and the lower end of the bolt are of thread structures; threads are arranged on the outer surface of the circular upper end of the expansion sleeve; an inner octagonal plane structure is arranged inside the expansion sleeve; the lower part of the expansion sleeve is conical; an axial opening is formed in one side of the expansion sleeve; the expansion sleeve is arranged on the bolt; an adjusting gasket is arranged at the circular upper end of the expansion sleeve; the nut is arranged at the upper end of the bolt; a set screw at the inner hexagonal conical end is set on the upper end face of the expansion sleeve through a screw hole formed in the nut. According to the blind hole expansion bolt disclosed by the invention, the connecting and the fixing are realized by using the friction type bond stress; the connection is accurate and reliable; the locking is realized, so the connection failure caused by loosening is prevented; in addition, the expansion stress position of the expansion sleeve in the hole can be freely adjusted within a certain range according to the length of the hole; a limit expansion force can be controlled; the connecting expansion hole is prevented from being damaged.
Description
Technical field
The invention belongs to machanical fastener technical field, particularly connection blind bolt in a kind of thermonuclear fusion heap.
Background technique
International Thermal-Nuclear Experimental Reactor (being called for short ITER) plan, be 2005 by European Union, China, the U.S., Russia, Japan, Korea S and India seven side participate in the International Thermal-Nuclear Experimental Reactor of construction, object develops controllable nuclear fusion technology, and finally for the mankind provide unlimited, clean, the new energy of safety, this plan is that current global scale is maximum, affect one of the most far-reaching international scientific research cooperative project, thermonuclear fusion experimental reactor connection EXPANSION ANCHOR BOLTS needs to use controllable expansion bolt, work to meet under its required component that are in operation all are in controlled reliable situation, current existing common EXPANSION ANCHOR BOLTS, that one end is with the bolt head of tapering and the expansion sleeve adding a surrounding opening mostly, common EXPANSION ANCHOR BOLTS makes outer expansion sleeve violence be expanded to distortion by continuous precession one end nut even to destroy and connect the uncontrollable mode of inflation port and carry out work, and common EXPANSION ANCHOR BOLTS cannot be carried out appropriateness according to connection inflation port length and be regulated, in the tip device such as thermonuclear fusion experimental reactor, bolt need possess expansive force can not exceed certain limit of expansion, adjustment expansion sleeve length can be carried out and bear once in a while can not carrying the features such as power by resistance according to connection inflation port length, meeting under the prerequisite do not destroyed and connect inflation port, realize connecting reliably effectively, therefore, existing common EXPANSION ANCHOR BOLTS cannot meet above-mentioned requirements.
Summary of the invention
The object of the invention is to solve problems of the prior art, design provides a kind of thermonuclear fusion heap connection blind bolt, and this EXPANSION ANCHOR BOLTS utilizes friction type bond stress and reaches and be connected and fixed effect, connects precisely reliable, can be locked, prevent from loosening and the Joint failure that causes.
Technological scheme of the present invention is:
A kind of thermonuclear fusion heap connection blind bolt, primarily of nut, bolt, expansion sleeve forms, the stage casing of described bolt is conical, middle epimere is anistree face shape, upper and lower two ends are worm structure, the circular upper of expansion sleeve is that outer surface is provided with screw thread, inside is provided with interior anistree face structure, the bottom of expansion sleeve is for taper shape and side is provided with axially open, expansion sleeve is located on bolt, the taper shape of expansion sleeve bottom matches with the taper shape in bolt stage casing, the anistree face shape of inside, expansion sleeve upper end is matched with the anistree face shape of epimere in bolt, adjusting washer (disk) is located on the circular upper of expansion sleeve by the screw thread of its endoporus, nut is located at the upper end of bolt, nut lower end surface contacts with the upper-end surface of expansion sleeve, interior hexagonal cone end Cock screw is fixed on the upper-end surface of expansion sleeve by the screw established in nut.
Described interior hexagonal cone end Cock screw is two or more.
The material of described each parts is 316LN Austenitic Stainless Steel.
Fastening and locked principle of the present invention is: utilize the expansion sleeve of axially open to coordinate with bolt, end nut precession on bolt in EXPANSION ANCHOR BOLTS, move from upper end to lower end on bolt to promote expansion sleeve, thus make stressed the swelling of expansion sleeve produce the bond stress that rubs with being connected between inflation port, to reach the effect of being fixedly connected with, bolt lower end screws in blind threaded hole, in upper end, screw in nut tightening hole can locking nut for hexagonal cone end Cock screw, causes Joint failure to prevent because the factors such as vibrations produce loosening.
Beneficial effect of the present invention and advantage are:
The present invention utilizes friction type bond stress and reaches and is connected and fixed effect; connect precisely reliable; can be locked; prevent from loosening and the Joint failure that causes; the present invention is directed to specific attachment hole can according to the length in hole free adjustment expansion sleeve expansion forced position in hole within the scope of certain length; and it is controlled to have limit expansive force, be not destroyed to reach protection connection inflation port.
Accompanying drawing explanation
Fig. 1 is the main sectional view of thermonuclear fusion of the present invention heap connection blind bolt;
In figure: hexagonal cone end Cock screw, 5-adjusting washer (disk) in 1-nut, 2-bolt, 3-expansion sleeve, 4-
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail, but should not be interpreted as that the scope of theme of the present invention is only limitted to following embodiment at this point, without departing from the idea case in the present invention described above, all make according to ordinary skill knowledge and customary means various amendments, replacement and change, include within the scope of the invention.
As shown in Figure 1, a kind of thermonuclear fusion heap connection blind bolt, primarily of nut 1, bolt 2, expansion sleeve 3 forms, the stage casing of described bolt 2 is conical, middle epimere is anistree face shape, upper and lower two ends are worm structure, the circular upper of expansion sleeve 3 is that outer surface is provided with screw thread, inside is provided with interior anistree face structure, the bottom of expansion sleeve 3 is for taper shape and side is provided with axially open, expansion sleeve 3 is located on bolt 2, the taper shape of expansion sleeve 3 bottom matches with the taper shape in bolt 2 stage casing, the anistree face shape of inside, expansion sleeve 3 upper end is matched with the anistree face shape of epimere in bolt 2, adjusting washer (disk) 5 is located on the circular upper of expansion sleeve 3 by the screw thread of its endoporus, nut 1 is located at the upper end of bolt 2, nut 1 lower end surface contacts with the upper-end surface of expansion sleeve 3, interior hexagonal cone end Cock screw 4 is fixed on the upper-end surface of expansion sleeve 3 by the screw established in nut 1.
Described interior hexagonal cone end Cock screw 4 is two or more.
Thermonuclear fusion of the present invention piles the process that is linked and packed of connection blind bolt mainly:
Be by axially open, endoporus is that the expansion sleeve 3 of taper loads from bolt 2 upper-end part of driving, matches with the taper in face anistree in epimere in bolt 2 and stage casing, adjusting washer (disk) 5 is loaded by bolt 2 upper end, screw with the threaded upper ends of expansion sleeve 3, again the threaded engagement of nut 1 with bolt 2 upper end is assembled, nut 1 lower end surface is contacted with expansion sleeve 3 upper-end surface, the blind bolt assembled is through the part through hole needing to connect by bolt 2 lower end, bolt lower end is screwed in the blind tapped hole be fixedly connected with, wherein adjust packing ring 5 and can carry out appropriateness adjustment according to the length connecting inflation port, reserved certain small―gap suture between nut 1 and expansion sleeve 3, precession nut 1 makes expansion sleeve 3 move to bolt 2 tapered lower end, due to expansion sleeve 3 having axially open, when expansion sleeve 3 moves to bolt 2 lower end, expansion sleeve 3 can expand because bolt 2 becomes large taper gradually and become large, frictional force is bonded with being connected to produce between inflation port to make expansion sleeve 3, thus make expansion sleeve 3 play the effect of being connected and fixed, in expansion sleeve 3, all there is step from all directions outer one end from all directions with bolt 2 from all directions simultaneously, when the continuous precession of expansion sleeve 3, its limit precession length is for coordinating length of bench from all directions, cause connection inflation port to avoid the violence because of the continuous precession of expansion sleeve 3 to expand to suffer damage, precession adjusting washer (disk) 5 can make expansion sleeve 3 carry out appropriateness adjustment according to the length of inflation port, prevent because of inflation port length be less than expansion sleeve 3 length time, expansion sleeve 3 slides and causes Joint failure in hole, in precession, hexagonal cone end Cock screw 4 can make between nut 1 and expansion sleeve 3 locked, during to prevent EXPANSION ANCHOR BOLTS because bearing the variable load power that can not resist and the loosening Joint failure caused.
Further, the each parts material of blind bolt in the present invention is 316LN Austenitic Stainless Steel, and when 4K temperature, yield strength is greater than 700Mpa, tensile strength is greater than 1385Mpa, its intensity can meet thermonuclear fusion heap in key, fine structure part connection needs, safe and reliable.
Claims (3)
1. a thermonuclear fusion heap connection blind bolt, primarily of nut (1), bolt (2), expansion sleeve (3) forms, it is characterized in that the stage casing of described bolt (2) is for conical, middle epimere is anistree face shape, upper and lower two ends are worm structure, the circular upper of expansion sleeve (3) is that outer surface is provided with screw thread, inside is provided with interior anistree face structure, the bottom of expansion sleeve (3) is for taper shape and side is provided with axially open, expansion sleeve (3) is located on bolt (2), the taper shape of expansion sleeve (3) bottom matches with the taper shape in bolt (2) stage casing, the anistree face shape of expansion sleeve (3) inside, upper end is matched with the anistree face shape of epimere in bolt (2), adjusting washer (disk) (5) is located at by the screw thread of its endoporus on the circular upper of expansion sleeve (3), nut (1) is located at the upper end of bolt (2), nut (1) lower end surface contacts with the upper-end surface of expansion sleeve (3), interior hexagonal cone end Cock screw (4) is fixed on the upper-end surface of expansion sleeve (3) by the screw established in nut (1).
2. thermonuclear fusion heap connection blind bolt according to claim 1, is characterized in that described interior hexagonal cone end Cock screw (4) is two or more.
3. thermonuclear fusion heap connection blind bolt according to claim 1, is characterized in that the material of described each parts is 316LN Austenitic Stainless Steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410425327.3A CN104314941A (en) | 2014-08-26 | 2014-08-26 | Blind hole expansion bolt for connecting thermonuclear fusion reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410425327.3A CN104314941A (en) | 2014-08-26 | 2014-08-26 | Blind hole expansion bolt for connecting thermonuclear fusion reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104314941A true CN104314941A (en) | 2015-01-28 |
Family
ID=52370223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410425327.3A Pending CN104314941A (en) | 2014-08-26 | 2014-08-26 | Blind hole expansion bolt for connecting thermonuclear fusion reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104314941A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404392A (en) * | 2018-11-12 | 2019-03-01 | 中国船舶重工集团公司第七〇九研究所 | A kind of fast assembling-disassembling fastener |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2181511A (en) * | 1985-09-06 | 1987-04-23 | Pilgrim Eng Dev | Expansion bolt for bolted couplings |
| CN2338530Y (en) * | 1998-07-22 | 1999-09-15 | 济南铁路分局泰安工务段 | Dismountable upset bolt |
| CN2440968Y (en) * | 2000-09-27 | 2001-08-01 | 戚进 | Adjustable screw rod style expansion screw |
| GB2383105A (en) * | 2001-12-11 | 2003-06-18 | Rolls Royce Plc | Expansion bolt assembly |
| CN2898408Y (en) * | 2006-04-17 | 2007-05-09 | 张思贵 | Tensile expanded bolt |
| US20100226715A1 (en) * | 2007-09-18 | 2010-09-09 | P & S Vorspannsysteme Ag | Connecting arrangement and connecting method, in particular by way of non-positive connection on all sides |
| CN201916314U (en) * | 2010-12-16 | 2011-08-03 | 渤海船舶重工有限责任公司 | Connecting bolt for ship main engine shaft and flange |
| CN203670405U (en) * | 2013-11-11 | 2014-06-25 | 上海汽车集团股份有限公司 | Wire harness grounding bolt, wire harness grounding terminal and wire harness grounding structure |
-
2014
- 2014-08-26 CN CN201410425327.3A patent/CN104314941A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2181511A (en) * | 1985-09-06 | 1987-04-23 | Pilgrim Eng Dev | Expansion bolt for bolted couplings |
| CN2338530Y (en) * | 1998-07-22 | 1999-09-15 | 济南铁路分局泰安工务段 | Dismountable upset bolt |
| CN2440968Y (en) * | 2000-09-27 | 2001-08-01 | 戚进 | Adjustable screw rod style expansion screw |
| GB2383105A (en) * | 2001-12-11 | 2003-06-18 | Rolls Royce Plc | Expansion bolt assembly |
| CN2898408Y (en) * | 2006-04-17 | 2007-05-09 | 张思贵 | Tensile expanded bolt |
| US20100226715A1 (en) * | 2007-09-18 | 2010-09-09 | P & S Vorspannsysteme Ag | Connecting arrangement and connecting method, in particular by way of non-positive connection on all sides |
| CN201916314U (en) * | 2010-12-16 | 2011-08-03 | 渤海船舶重工有限责任公司 | Connecting bolt for ship main engine shaft and flange |
| CN203670405U (en) * | 2013-11-11 | 2014-06-25 | 上海汽车集团股份有限公司 | Wire harness grounding bolt, wire harness grounding terminal and wire harness grounding structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404392A (en) * | 2018-11-12 | 2019-03-01 | 中国船舶重工集团公司第七〇九研究所 | A kind of fast assembling-disassembling fastener |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150128 |