CN208749772U - Quick-dismantling fixing bolt and nut - Google Patents
Quick-dismantling fixing bolt and nut Download PDFInfo
- Publication number
- CN208749772U CN208749772U CN201820970214.5U CN201820970214U CN208749772U CN 208749772 U CN208749772 U CN 208749772U CN 201820970214 U CN201820970214 U CN 201820970214U CN 208749772 U CN208749772 U CN 208749772U
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- China
- Prior art keywords
- nut
- bolt
- gasket
- screw rod
- quickly removed
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- 230000010354 integration Effects 0.000 claims 1
- 230000008774 maternal effect Effects 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 239000000284 extract Substances 0.000 description 3
- 239000003607 modifier Substances 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses the needle provides a fixing bolt nut of demolising fast, includes bolt, nut and gasket at least, the bolt comprises bolt head and screw rod, screw rod and nut threaded connection, and the screw rod adds with the nut junction and is equipped with the gasket. The fixing bolt nut solves the problems that during the tripping operation process of underground operation, when a well mouth is installed with a self-sealing well sealer or a falling object preventing device, when the well mouth has overflow, well kick and other events, and the self-sealing well sealer or the falling object preventing device needs to be removed, the bolt can be rapidly and reliably removed, and well control risks are reduced.
Description
Technical field
The utility model machinery manufacturing technology field, and in particular to the anchor bolt nut that one kind is quickly removed.
Background technique
The bolt and nut used when currently, Oil Field is oily, the control of gas well mouth is installed is still common conventional bolt
Nut.Such bolt is made of screw rod and a nut to match therewith, remove bolt and nut when, need bolt one end first
Nut a-circle-by-a-circle screw down.The fixing bolt quantity as used in wellhead assembly is more, and the operating process for removing bolt exists
Just seem when normal operation especially loaded down with trivial details.Once encountering well kick needs urgent dismounting bolt, when installing other wellhead assemblies, short
12 bolts are removed in time, are just difficult to do quick dismounting, and gas blowout accident often occurs because removing not in time.
Utility model content
During the utility model is for sand washing, round trip, when well head installs self-sealing blowout preventer or Junk prevention device,
A kind of anchor bolt nut quickly removed is devised, when the events such as overflow, well kick occurs in well head, needs to remove self-sealing blowout preventer
Or when Junk prevention device device, the bolt can be quickly and reliably removed, well control risk is reduced.
Technical solution used by the utility model is as follows:
A kind of anchor bolt nut quickly removed, includes at least bolt, nut and gasket, the bolt by bolt head and
Screw rod composition, the screw rod are connect with nut thread, and screw rod and nut junction add gasket.
The connection integrated with bolt head of the upper end of the screw rod, the lower end inside of screw rod are equipped with the female spiral shell to match with nut
Line；The nut includes nut body, and the side of nut body is installed with connecting rod, the outside of connecting rod be equipped with on screw rod
The male thread that box thread matches；The side of nut body is drilled with cross-hole.
The outer diameter of the nut body and outer screw diameter are in the same size.
The gasket is square aperture gasket, is clipped between screw bolt and nut.
The openings of sizes of the gasket is greater than the outer diameter of nut male thread, less than the outer diameter of nut body；And gasket is outer
Portion's size is greater than well head bolt hole.
The spacer thickness is not less than 10mm.
The anchor bolt nut further includes the dedicated wrench of nut, and the nut personality board hand includes handle, the front end of handle
It is installed with driving end；Driving end front end is in cross, and forms clutch location structure with cross-hole on nut.
The grip surface annular knurl.
The bolt head be positive four directions or six square nuts.
The utility model has the beneficial effects that
A kind of development for the anchor bolt nut quickly removed, during solving underground work round trip, well head
Self-sealing blowout preventer is installed or when Junk prevention device, when there are the events such as overflow, well kick in well head, need to remove self-sealing blowout preventer or
When Junk prevention device device, the bolt can be quickly and reliably removed, well control risk is reduced.Through field test, the bolt spiral shell
Female single dismounting time can complete in 2S, install self-sealing blowout preventer in well head at present or Junk prevention device is promoted the use of.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of anchor bolt nut quickly removed；
The bolt arrangement schematic diagram of Fig. 2；
Fig. 3 is the structural schematic diagram of nut；
Fig. 4 is the structural schematic diagram of gasket；
The structural schematic diagram of Fig. 5 nut special spanner.
Description of symbols
1, bolt；1.1, bolt head；1.2, screw rod；2, nut；2.1, nut body；2.2, connecting rod；3, gasket；4, spiral shell
Female dedicated wrench；4.1, handle；4.2, driving end；5, cross-hole.
Specific embodiment
Embodiment 1
As shown in Figure 1, a kind of anchor bolt nut quickly removed, includes at least bolt 1, nut 2 and gasket 3, it is described
Bolt 1 is made of bolt head 1.1 and screw rod 1.2, and the screw rod 1.2 is threadedly coupled with nut 2, and screw rod 1.2 is connect with nut 2
Place adds gasket 3.
Being mainly characterized by not needing of anchor bolt nut described in the utility model all unsnatches screw thread, only needs one to twist,
Extract gasket, so that it may extract screw thread out, play the purpose quickly removed.
Embodiment 2
On the basis of embodiment 1, as shown in Fig. 2, the connection integrated with bolt head 1.1 of the upper end of the screw rod 1.2, spiral shell
The lower end inside of bar 1.2 is equipped with the box thread to match with nut 2.
As shown in figure 3, the nut 2 includes nut body 2.1, the side of nut body 2.1 is installed with connecting rod 2.2,
The outside of connecting rod 2.2 is equipped with the male thread to match with the box thread on screw rod 1.2, the rotation direction of male thread and the rotation of box thread
To opposite；The outer diameter of the nut body 2.1 and 1.2 outer diameter of screw rod are in the same size, and the lower end of nut 2 is drilled with cross-hole 5, side
Just the dedicated insertion of wrench 4 rotation of nut.
Modifier treatment is carried out to screw rod 1.2, nut 2, can be by the Brinell hardness scope control of screw rod 1.2 and nut 2
HB240~280.
As shown in figure 4, the gasket 3 is square aperture gasket, it is clipped between bolt 1 and nut 2；The opening of gasket 3 is big
The small outer diameter greater than 2 male thread of nut, less than the outer diameter of nut body 2.1；And the external dimensions of gasket 3 is greater than well head bolt
Plain nut stress is played the role of in hole.
The gasket 3 passes through modifier treatment, so that forming texturizing layer thereon.It, can be with by carrying out modifier treatment to gasket 3
It is HB240~280 by the Brinell hardness scope control of gasket, while gasket 3 must generally reach 10mm or more, to guarantee it
Enough hardness and tensile strength.
Embodiment 3
On the basis of the above embodiments, described as shown in figure 5, the anchor bolt nut further includes the dedicated wrench 4 of nut
The dedicated wrench 4 of nut includes handle 4.1, and the front end of handle 4.1 is installed with driving end 4.2,4.2 front end of driving end in cross,
And clutch location structure is formed with cross-hole 5 on nut 2；4.1 surface knurling of handle.
The specifically used method of anchor bolt nut described in the utility model are as follows: bolt is passed through into self-sealing blowout preventer or anti-fall
The external screw thread of nut is connected by object device, well head bolt hole with the internal screw thread of bolt, centre plus lower gasket, by certain torque
Screw thread is tightened, fixed function is played, when removing bolt, with the corresponding removal hole of the dedicated wrench insertion nut of nut, twists half
Circle extracts gasket out, takes out bolt.
Embodiment 4
Just use force analysis in bolt scene: stress condition when according to work, thread mostly occur shearing and bending failure,
If the cantilever beam that width is π d can be regarded as by being unfolded at a circle screw thread threadingly major diameter.Assuming that every circle screw thread was born
Average tension is Q/u (Q is the total pulling force that screw rod is received, and u is thread turns), and act on using in screw thread through d2 as the circumference of diameter
On, then the shear strength condition of thread dangerouse cross-section are as follows:
τ=Q/ (π dbu)≤[τ]
In formula: the shearing stress that τ-screw thread is received
[τ]-allowable shear stress [τ]=0.3 σ b=0.3 × 655MPa=196.5MPa
The total pulling force Q=20t=20x1000x9.8=196000N that Q-screw thread is received
B-thread root thickness b=0.75P=0.75 × 2=1.5mm
U-thread turns u=L/P=40/2=20
It substitutes into formula
τ=196000/ (3.14 × 39 × 1.5 × 20)=53.35MPa
τ=53.35MPa≤[τ]=196.5MPa
Safety coefficient n
N=196.5MPa/53.35MPa=3.68
By calculating it is found that the shear stress that screw thread is received is less than the shear stress allowable of material, in each bolts receiving
In the case where 20T pulling force, 6 bolts can bear the pulling force of 120T, consider safety factor, 6 bolts are minimum to bear 96T's
Pulling force.Therefore the intensity for connecting bolt meets live requirement.
Therefore the anchor bolt nut described in the utility model quickly removed, structure is simple, convenient for disassembly and assembly, practicability
By force, and not normal operating habit is influenced, which can be rapidly assembled and disassembled；It makes a trip work which solves underground work
During industry, when well head installs self-sealing blowout preventer or Junk prevention device, when the events such as overflow, well kick occurs in well head, need to tear open
When except self-sealing blowout preventer or Junk prevention device device, the bolt can be quickly and reliably removed, well control risk is reduced.Through existing
It examines, which individually removes the time can complete in 2S, install self-sealing blowout preventer or Junk prevention in well head at present
Device is promoted the use of.
Claims (5)
1. the anchor bolt nut quickly removed of one kind, it is characterised in that: include at least bolt (1), nut (2), gasket (3) and
The dedicated wrench of nut (4), the bolt (1) are made of bolt head (1.1) and screw rod (1.2), the screw rod (1.2) and nut
(2) it is threadedly coupled, and screw rod (1.2) and nut (2) junction add gasket (3)；The upper end of the screw rod (1.2) and bolt
Head (1.1) integration connection, the lower end inside of screw rod (1.2) are equipped with the box thread to match with nut (2)；The nut (2)
Including nut body (2.1), the side of nut body (2.1) is installed with connecting rod (2.2), and the outside of connecting rod (2.2) is equipped with
The male thread to match with the box thread on screw rod (1.2)；The side of nut body (2.1) is drilled with cross-hole (5)；The spiral shell
The outer diameter of maternal body (2.1) and screw rod (1.2) outer diameter are in the same size；The gasket (3) is square aperture gasket, is clipped in bolt
(1) between nut (2)；The dedicated wrench of nut (4) includes handle (4.1), and the front end of handle (4.1) is installed with driving end
(4.2)；Driving end (4.2) front end is in cross, and forms clutch location structure with cross-hole (5) on nut (2).
2. the anchor bolt nut that one kind according to claim 1 is quickly removed, it is characterised in that: the gasket (3)
Openings of sizes is greater than the outer diameter of nut (2) male thread, is less than the outer diameter of nut body (2.1)；And the external dimensions of gasket (3) is big
In well head bolt hole.
3. the anchor bolt nut that one kind according to claim 1 is quickly removed, it is characterised in that: the gasket (3) is thick
Degree is not less than 10mm.
4. the anchor bolt nut that one kind according to claim 1 is quickly removed, it is characterised in that: the handle (4.1)
Surface knurling.
5. the anchor bolt nut that one kind according to claim 1 is quickly removed, it is characterised in that: the bolt head
(1.1) be positive four directions or six square nuts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820970214.5U CN208749772U (en) | 2018-06-22 | 2018-06-22 | Quick-dismantling fixing bolt and nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820970214.5U CN208749772U (en) | 2018-06-22 | 2018-06-22 | Quick-dismantling fixing bolt and nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208749772U true CN208749772U (en) | 2019-04-16 |
Family
ID=66054212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820970214.5U Active CN208749772U (en) | 2018-06-22 | 2018-06-22 | Quick-dismantling fixing bolt and nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208749772U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114018477A (en) * | 2021-10-26 | 2022-02-08 | 大连理工大学 | Dynamic balance detection tool for thin-wall herringbone gear inner gear ring of planetary reducer |
-
2018
- 2018-06-22 CN CN201820970214.5U patent/CN208749772U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114018477A (en) * | 2021-10-26 | 2022-02-08 | 大连理工大学 | Dynamic balance detection tool for thin-wall herringbone gear inner gear ring of planetary reducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201117 Address after: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC CHUANQING DRILLING ENGINEERING Co.,Ltd. Address before: No.6, mengzhuiwan street, Chenghua District, Chengdu City, Sichuan Province Patentee before: CNPC CHUANQING DRILLING ENGINEERING Co.,Ltd. Patentee before: CHINA NATIONAL PETROLEUM CORPORATION CHUANQING DRILLING ENGINEERING COMPANY LIMITED CHANGQING DOWNHOLE TECHNOLOGY Co. |
|
| TR01 | Transfer of patent right |