CN102086895A - Manual inspection bolt - Google Patents
Manual inspection bolt Download PDFInfo
- Publication number
- CN102086895A CN102086895A CN 201110032060 CN201110032060A CN102086895A CN 102086895 A CN102086895 A CN 102086895A CN 201110032060 CN201110032060 CN 201110032060 CN 201110032060 A CN201110032060 A CN 201110032060A CN 102086895 A CN102086895 A CN 102086895A
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- bolt
- hand inspection
- inspection bolt
- hand
- sealing cap
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Abstract
The invention discloses a manual inspection bolt which comprises a manual inspection bolt body (1), an anti-corrosion seal ring (2), a controllable pad (3), an inspection bolt (4) and a seal nut cap (5), wherein the controllable pad (3) penetrates through the inspection bolt (4), and the inspection bolt (4) and the manual inspection bolt body (1) are connected through screw threads; the controllable pad (3) is pressed at the bottom of the nut of the inspection bolt (4) and the top of the manual inspection bolt body (1); and the seal nut cap (5) is covered on the top of the manual inspection bolt body (1), inner fine teeth are matched with the controllable pad (3), and the controllable pad (3) and the inspection bolt (4) are protected by the anti-corrosion seal ring (2) from the corrosion caused by the external environment.
Description
Technical field
The present invention relates to the connecting bolt that a kind of available hand detects degree of tightness, particularly a kind of diameter is greater than the hand inspection bolt of 20mm, is applicable to the bolt that the connection of the key position of various heavy equipments, equipment is used.
Background technique
In current industry equipment, it all is to adopt bolt to connect that the component of a lot of jumboes connect, with for convenience detach and maintenance.At present the locking method of large diameter bolt is again mainly based on two kinds of pulling method and calibrated wrench methods.Because calibrated wrench method lock bolt nut is easy to use, versatility is good, so be widely used at present.As everyone knows, whether a bolt reaches the locking requirement of technological design, sees mainly whether the axial pre tightening force of bolt reaches requirement.By the bolt of calibrated wrench method locking, because the variation of frictional force, torque coefficient is the value of a dynamic change, so be difficult to guarantee that the pretightening force with a collection of bolt is identical.By the pulling method lock bolt,, cause the partial loss of axial force owing to the springback capacity of bolt for a moment.So whether a bolt originally is locked to the axial force that it is set, and cannot guarantee.
Because the incorrect and same flange bolt coupling mechanism force of bolt axial force locking is inhomogeneous, can cause the flange leakage of petroleum and petrochemical industry, the collapsing of slingcart; the collapsing and shut down of wind power generating set; the steel rolling reject rate of Iron And Steel Plant, even the leakage of nuclear power station, or the like.
The locking problem of large diameter bolt has become the bottleneck that China's new energy, heavy equipment already develop, to have a strong impact on our heavy equipment industry product ability to the higher level development.
Summary of the invention
For overcoming the deficiency of above-mentioned prior art, the technical problem to be solved in the present invention provides a kind of hand inspection bolt device.
Controlled pad 3 is through and detects on the bolt 4, detects bolt 4 and examines bolt body 1 by being threaded with hand; Controlled pad 3 is crushed on the nut bottom of detection bolt 4 and the top of hand inspection bolt body 1; Sealing cap 5 buckle closures are at the top of hand inspection bolt body 1, and inner serration cooperates with controlled pad 3, protecting controlled pad 3, detecting bolt 4 by corrosion protection seal ring 2, avoid the corrosion of external environment condition.
When using this device, the hand inspection bolt with product of the present invention substitutes traditional common standard bolt earlier, uses present pulling method or calibrated wrench method locking method lock bolt then.In the process that bolt is locked again, the operator can rotate the internal serration sealing cap of hand inspection bolt by hand, when bolt does not reach the axial force of technique initialization, the internal serration sealing cap can be rotated easily, when bolt reaches the axial force of technique initialization, just can not rotate the internal serration sealing cap with hand, show that also bolt has reached the axial force of technique initialization simultaneously.The hand inspection bolt of the application of the invention can make all bolts of the same type reach same axial pre tightening force, thereby guarantee the installation quality of whole flange or equipment.
Description of drawings
Fig. 1 is the generalized section of hand inspection bolt of the present invention;
Fig. 2 is the decomposing schematic representation of hand inspection bolt of the present invention;
Label declaration in the accompanying drawing:
1. hand is examined bolt body
2. corrosion protection seal ring
3. controlled pad
4. detect bolt
5. sealing cap
Embodiment
Specific embodiments of the present invention are further described in detail with enforcement below in conjunction with accompanying drawing, but should not limit protection scope of the present invention with this.
See also Fig. 1 and Fig. 2.Fig. 1 is the generalized section of hand inspection bolt of the present invention; Fig. 2 is the decomposing schematic representation of hand inspection bolt of the present invention.Hand inspection bolt of the present invention comprises: hand inspection bolt body 1, corrosion protection seal ring 2, controlled pad 3, detection bolt 4 and sealing cap 5.
Leave respective voids according to default axial pre tightening force at controlled pad 3 and 1 of bolt body of hand inspection under the hand inspection bolt normality of the present invention, the sealing cap 5 that connects with controlled pad 3 serrations can arbitrarily be rotated.
The using process of bolt of the present invention is as follows:
Use traditional torque wrench fastening nut or use traditional bolt tensioning jack tensile bolt, in this process, hand inspection bolt body 1 of the present invention is elongated, produces elastic strain in elastic range; Examining bolt body 1 by screw thread conveniently with hand inspection bolt body 1 close-connected detection bolt 4 moves in the same way; Like this, in moving process, spacing reduces gradually between the nut top of the nut bottom of detection bolt 4 and hand inspection bolt body 1, and is final when reaching the bolt axial force of setting, controlled pad 3 is compressed, thereby controlled pad 3 can not freely be rotated because of the frictional force that this pressure produced; Sealing cap 5 and controlled pad 3 cooperate by serration, being subjected to axial force equally stretches, make sealing cap 5 when relatively moving, produce frictional force with hand inspection bolt body 1 nut top contact segment, thereby sealing cap 5 can't freely rotate, promptly, can whether reach axial pre tightening force to detect bolt by hand rotary seal block 5---when sealing cap 5 can not can freely rotate with hand, bolt just reached the axial pre tightening force of setting.
Sealing cap 5 also is lined with a corrosion protection seal ring with hand inspection bolt body 1 nut top, and the corrosion of avoiding external environment condition is to add stay bolt working life.
Nut bottom that the shape that controlled pad 3 on this hand inspection bolt can be changed into other also can reach same detected bolt 4 and the effect of stepping up with the nut top of hand inspection bolt body 1, this shape can adopt step type garden pad or the flat garden of trapezoidal external tooth pad or the like also can play equal effect.
This kind bolt is particularly suitable for diameter greater than the hand of 20mm inspection bolt, and the bolt that uses of the connection of the key position of various heavy equipments, equipment.
The above is preferred embodiment of the present invention only, is not to be used for limiting practical range of the present invention.Have in the technical field under any and know the knowledgeable usually, without departing from the spirit and scope of the present invention, when can being used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when looking claims institute confining spectrum.
Claims (6)
1. a hand inspection bolt is characterized in that, comprises hand inspection bolt body (1), controlled pad (3), detects bolt (4), sealing cap (5):
Wherein, bolt body (1) nut end is with detecting bolt (4) socket, controlled pad (3) is arranged between the top of the nut bottom of detecting bolt (4) and bolt body (1), and sealing cap (5) buckle closure is examined the top of bolt body (1) at hand, and inside connects with controlled pad (3).
2. hand inspection bolt according to claim 1 is characterized in that, described sealing cap (5) is with also being provided with a corrosion protection seal ring between hand inspection bolt body (1) the nut top.
3. hand inspection bolt according to claim 1 is characterized in that, described bolt body (1) has recessed or convex portion protruding accordingly or concave portion tabling formation socket with described detection bolt (4).
4. hand inspection bolt according to claim 1 and 2 is characterized in that described bolt body (1) passes through the screw thread socket with described detection bolt (4).
5. hand inspection bolt according to claim 1 is characterized in that described sealing cap (5) is connected with the serration interlock with controlled pad (3).
6. hand inspection bolt according to claim 1 is characterized in that controlled pad (3) is the circular flat gasket of band external tooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110032060 CN102086895A (en) | 2011-01-28 | 2011-01-28 | Manual inspection bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110032060 CN102086895A (en) | 2011-01-28 | 2011-01-28 | Manual inspection bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102086895A true CN102086895A (en) | 2011-06-08 |
Family
ID=44098830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110032060 Pending CN102086895A (en) | 2011-01-28 | 2011-01-28 | Manual inspection bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102086895A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060391A (en) * | 2021-11-01 | 2022-02-18 | 河南航天精工制造有限公司 | Pre-tightening force control device and control method for threaded fastener |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2236372A (en) * | 1989-09-15 | 1991-04-03 | Sps Technologies Limited | Tensioning method and device |
| US5226765A (en) * | 1989-11-27 | 1993-07-13 | Rotabolt Limited | Load-indicating fastener |
| CN201293697Y (en) * | 2008-11-13 | 2009-08-19 | 湘电风能有限公司 | Detection device for bolt pretightening force |
| JP2010117310A (en) * | 2008-11-14 | 2010-05-27 | Uchimura:Kk | Fastener for axial force detection and manufacturing method thereof, fastener unit, and axial force monitoring system |
| CN202056164U (en) * | 2011-01-28 | 2011-11-30 | 李圣用 | Manual inspection bolt |
-
2011
- 2011-01-28 CN CN 201110032060 patent/CN102086895A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2236372A (en) * | 1989-09-15 | 1991-04-03 | Sps Technologies Limited | Tensioning method and device |
| US5226765A (en) * | 1989-11-27 | 1993-07-13 | Rotabolt Limited | Load-indicating fastener |
| CN201293697Y (en) * | 2008-11-13 | 2009-08-19 | 湘电风能有限公司 | Detection device for bolt pretightening force |
| JP2010117310A (en) * | 2008-11-14 | 2010-05-27 | Uchimura:Kk | Fastener for axial force detection and manufacturing method thereof, fastener unit, and axial force monitoring system |
| CN202056164U (en) * | 2011-01-28 | 2011-11-30 | 李圣用 | Manual inspection bolt |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060391A (en) * | 2021-11-01 | 2022-02-18 | 河南航天精工制造有限公司 | Pre-tightening force control device and control method for threaded fastener |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20110608 |