CN203201965U - Mechanical nut device and bolt - Google Patents
Mechanical nut device and bolt Download PDFInfo
- Publication number
- CN203201965U CN203201965U CN 201320087785 CN201320087785U CN203201965U CN 203201965 U CN203201965 U CN 203201965U CN 201320087785 CN201320087785 CN 201320087785 CN 201320087785 U CN201320087785 U CN 201320087785U CN 203201965 U CN203201965 U CN 203201965U
- Authority
- CN
- China
- Prior art keywords
- thread
- nut
- bolt
- screw
- threaded
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a mechanical nut device and a bolt. The nut device comprises a nut body, a threaded drum ring, a threaded ring and a gasket, wherein inner threads are arranged on the inner side of the nut body, inner threads are arranged on the inner side of the threaded drum ring, outer threads are arranged on the outer side of the threaded drum ring, the threaded drum ring is sleeved inside the nut body in a threaded mode, external splines are arranged on the outer side of the threaded ring, threads are arranged on the inner side of the threaded ring, internal splines are arranged on the inner side of the gasket, and the gasket is sleeve outside the threaded ring through the splines. The gasket and the threaded ring can generate opposite axial movement under the action of external force. The threads on the body of the bolt are matched with the inner threads of the threaded drum ring and the inner threads of the threaded ring, and the bolt is connected with the threaded drum ring and the threaded ring respectively through the threads. According to the mechanical nut device and the bolt, the precision of the matched threaded faces of the nut and the threaded drum ring and the precision of the contacting faces of the nut and the gasket are controlled to accurately control friction force.
Description
Technical field
The utility model relates to the controllable mechanical type nut of a kind of four parts frictional force, and especially a kind of mode by the moment of torsion clamping bolt reaches four parts mechanical type nut apparatus and the bolts of realizing the accurate pretightening force of bolt.
Background technique
It is a kind of Placement very common in the machinery industry that bolt connects, and for making things convenient for the postrun dismounting of equipment and maintenance, the component of a lot of jumboes and lathe connect all with bolts.Traditional locking method that existing bolt, nut connect comprises: moment of torsion clamping bolt method and bolt tension clamping bolt method.Moment of torsion clamping bolt method is to use torque tool rotation plain nut, by the relative displacement between the screw thread of nut and bolt, makes the bolt generation resiliently deformable that is stretched, thereby makes the pretightening force of bolt generation resilience.Bolt tension clamping bolt method is to use the method bolt of stretching tool or heating elongated in elastic range, makes bolt directly produce resiliently deformable, thereby makes bolt produce the pretightening force of resilience.When using moment of torsion clamping bolt method, because the frictional force error of nut and bolt matching thread can not obtain identical bolt elastic deformation amount by guarantee effect identical moment of torsion on nut, can make the amount of deformation of bolt produce 20～50% errors during normal operation; When using bolt tension clamping bolt method, when bolt is stretched to certain elastic deformation amount in elastic range, need to use manual mode to screw nut, because the error of nut and flange contact facings, manually the moment of torsion rotating nut can produce error, thereby produces 10% when making the reservation of tensile buckling amount of bolt
-15% error.And the existence of these errors is because nut and the frictional force inequality that contacts base surface (such as flange or apparatus body) to a great extent, and the screw thread frictional force inequality between nut inner thread and the kingbolt causes.The bolt of heavy mechanical equipment or machine tool component connects, in case the error of aforesaid bolt amount of elastic deformation occurs, will produce the error of bolt pretightening, occur loosening between the parts that cause being connected, thereby can not satisfy the industrial application requirement of equipment, with the production development accident, for example equipment collapses when serious, the chemical plant blast, offshore oil pipeline leakage of oil etc.
The fastening precision problem of large diameter bolt has become a bottleneck of China's new energy, heavy equipment industry development, has had a strong impact on our heavy equipment industry product to the ability of higher level development.
The model utility content
For overcoming the deficiency of above-mentioned prior art, the utility model provides the controllable mechanical type nut apparatus of a kind of four parts frictional force and bolt.
Concrete technological scheme is as follows:
A kind of mechanical type nut apparatus comprises
One nut, this nut inboard is provided with internal thread;
One thread barrel circle, this thread barrel circle inboard is provided with internal thread, and the outside is provided with outside thread and is connected in the aforementioned nut with thread bush;
One fillet of screw, this fillet of screw outside is provided with external splines, and the inboard is provided with internal thread;
One packing ring, this packing ring inboard is provided with internal spline, is connected to outside the aforementioned threads circle with spline housing;
Described packing ring and the described fillet of screw can be under external force, and generation moves to axial.
Further, described nut lower surface is with smooth smooth the amplexiforming of upper surface of washer.
Further, described packing ring lower surface is non-smooth flat.
Further, described non-smooth flat is jagged decorative pattern.
Further, the internal thread of described nut is accurate internal thread, and the outside thread of described thread barrel circle is accurate outside thread.
Further, described thread barrel circle internal thread is regular screw threads, and the internal thread of the described fillet of screw is regular screw threads.
A kind of bolt that adapts with aforementioned nut apparatus, the screw thread on this bolt body is complementary with the internal thread of described thread barrel circle and the described fillet of screw, and by screw thread with described thread barrel circle be connected the fillet of screw and connect respectively.
Further, the screw thread on the described bolt body is regular screw threads.
The beneficial effects of the utility model are: the utility model mechanical type nut apparatus, and by the matching thread surface accuracy of control nut and thread barrel circle, and nut and packing ring surface of contact precision, with accurate control frictional force.Thereby with the uncontrollable nut of conventional nut Placement and flange contact facings place frictional force, uncertain frictional force between kingbolt and matching thread that conventional nut is connected, be converted into the frictional force between the matching thread of accurately controlled nut and thread barrel circle, and the frictional force between nut and the packing ring surface of contact, make it evenly and can control, eliminate conventional nut causes bolt pretightening because of change in friction force error, and the work bolt of making obtains accurate pretightening force.
Description of drawings
Fig. 1 is the decomposing schematic representation of the utility model mechanical type nut apparatus;
Fig. 2 is the bottom decorative pattern schematic diagram of transition pad 4;
Fig. 3 is that the utility model mechanical type nut apparatus connects sectional drawing (not containing kingbolt);
Fig. 4 A is the utility model mechanical type nut apparatus connection diagram (containing kingbolt and application of force handle);
Fig. 4 B is the plan view of Fig. 4 A;
Fig. 4 C is that Fig. 4 B is along the sectional view of AA line;
Attached number in the figure explanation:
1, nut;
2, thread barrel circle;
3, the fillet of screw;
4, packing ring
5, the first contact base surface;
6, the second contact base surface;
7, kingbolt;
8, the first application of force handle;
9, the second application of force handle.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is further described in detail, but should limit protection domain of the present utility model with this.
See also Fig. 1, this figure is the decomposing schematic representation of the controllable mechanical type nut apparatus of the utility model four parts frictional force, comprises the nut 1 that contains accurate internal thread, contains common internal thread and accurate externally threaded thread barrel circle 2, contains the packing ring 4 of internal spline and the fillet of screw that contains common internal thread and external splines 3 that cooperates with it.The internal diameter of this nut 1 is complementary with the external diameter of this thread barrel circle 2, in order to be socketed by screw thread.The external diameter of these fillet of screw 3 peripheries and shape are complementary with internal diameter and the shape of packing ring 4, in order to be socketed by spline.The common internal thread that the inboard of thread barrel circle 2, the fillet of screw 3 is provided with is complementary with kingbolt main body outside thread to be connected, in order to be socketed by screw thread.
See also Fig. 3, be the sectional drawing after each parts connection of the utility model mechanical type nut apparatus, match each other between the accurate outside thread of the accurate internal thread of nut 1 inboard and thread barrel circle 2 peripheries in the present embodiment, can not affect the distortion inaccuracy of bolt tension to guarantee the frictional force between the connecting thread face; Nut 1 is accurately machined smooth surface with packing ring 4 surface of contact, can not affect the distortion inaccuracy of bolt tension to guarantee the frictional force between the faying surface; Packing ring 4 bottoms are provided with the out-of-flatness decorative pattern.See also Fig. 2, the present embodiment is the decorative pattern of zigzag system, and this multiple tooth shape bottom surface contacts with contacting the base surface surface when clamping bolt, for increasing the frictional force of the packing ring 4 that contains internal spline with contact base surface surface of contact.
See also Fig. 4 A～4C, for the utility model mechanical type nut apparatus connection diagram and overlook, sectional view, kingbolt 7 passes the first contact base surface 5 and contacts the attachment hole of base surface 6 with second with nut 1 socket of the utility model machinery nut apparatus, closely links together thereby the first contact base surface 5 is contacted base surface 6 with second; Kingbolt 7 is established threaded main body and is connected mutually with the common internal thread of thread barrel circle 2 inboards and the common internal thread of the fillet of screw 3 respectively; Nut 1 is inner to be connected nut 1 lower surface and smooth smooth contact of packing ring 4 upper surfaces with thread barrel circle 2 by accurate thread; Spline joint is passed through with the fillet of screw 3 in packing ring 4 inside, and the lower surface that packing ring 4 has the flexuose decorative pattern amplexiforms mutually with the first contact base surface 5.During utilization, be provided with one first application of force handle 8 with nut 1 inlay card in interior, so that the application of force makes nut 1 rotation; And be provided with one second application of force handle 9 with packing ring 4 inlay cards in interior, in order to apply reaction force, with further retaining washer 4.Wherein, the first contact base surface, the second contact base surface can be flange or device external link etc.
When using the fastening the utility model mechanical type of torque method nut apparatus to connect with bolt, by moment of torsion turn application of force handle 8, impel nut 1 rotation, drive the thread barrel circle 2 that connects by accurate thread with it and upwards produce relative displacement; Further, thread barrel circle 2 upwards produces the trend of displacement synchronously by common internal thread drive work bolt 7; Work bolt 7 drives the fillet of screw 3 synchronous trend to top offset to top offset; Packing ring 4 is provided with the effect of the super large frictional force that the lower surface of jagged decorative pattern produces owing to the counter-force that is subject to application of force handle 9 and packing ring 4, keep static and do not rotate, so keep not rotating with its fillet of screw 3 by spline joint.Under above-mentioned comprehensive function, kingbolt 7 stressed stretchings, but keep not rotating.At this moment, the nut 1 that contains accurate internal thread smoothly amplexiforms with the surface of contact highi degree of accuracy that contains the packing ring 4 of internal spline, frictional force balanced (actual frictional force is very little herein), the deformation error that exists in the minimizing work bolt tension process, and the highi degree of accuracy interlock screw thread that further thread barrel circle 2 and nut are 1, frictional force balanced (actual frictional force is very little herein) can further reduce the deformation error that exists in the work bolt tension process.When using calibrated wrench method tightening nut bolt, by using the utility model mechanical type nut apparatus, can overcome the change in friction force of conventional nut bolt, make bolt reach accurate elastic deformation amount, finally make bolt obtain accurate pretightening force.
The above is preferred embodiment of the present utility model only, is not to limit practical range of the present utility model.Have in the technical field under any and usually know the knowledgeable, within not breaking away from spirit and scope of the present utility model, when doing various changes and retouching, therefore protection domain of the present utility model is as the criterion when looking claims institute confining spectrum.
Claims (8)
1. a mechanical type nut apparatus is characterized in that, comprises
One nut, this nut inboard is provided with internal thread;
One thread barrel circle, this thread barrel circle inboard is provided with internal thread, and the outside is provided with outside thread with spiral shell
Line is socketed in the aforementioned nut;
One fillet of screw, this fillet of screw outside is provided with external splines, and the inboard is provided with internal thread;
One packing ring, this packing ring inboard is provided with internal spline, is connected to outside the aforementioned threads circle with spline housing;
Described packing ring and the described fillet of screw can be under external force, and generation moves to axial.
2. mechanical type nut apparatus as claimed in claim 1 is characterized in that, described nut lower surface is with smooth smooth the amplexiforming of upper surface of washer.
3. mechanical type nut apparatus as claimed in claim 1 is characterized in that, described packing ring lower surface is non-smooth flat.
4. mechanical type nut apparatus as claimed in claim 3 is characterized in that, described non-smooth flat is jagged decorative pattern.
5. mechanical type nut apparatus as claimed in claim 1 is characterized in that, the internal thread of described nut is accurate internal thread, and the outside thread of described thread barrel circle is accurate outside thread.
6. mechanical type nut apparatus as claimed in claim 1 is characterized in that, described thread barrel circle internal thread is regular screw threads, and the internal thread of the described fillet of screw is regular screw threads.
7. a bolt that adapts with the described nut apparatus of claim 1 is characterized in that, the screw thread on this bolt body is complementary with the internal thread of described thread barrel circle and the described fillet of screw, and by screw thread with described thread barrel circle be connected the fillet of screw and connect respectively.
8. bolt as claimed in claim 7 is characterized in that, the screw thread on the described bolt body is regular screw threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320087785 CN203201965U (en) | 2013-02-26 | 2013-02-26 | Mechanical nut device and bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320087785 CN203201965U (en) | 2013-02-26 | 2013-02-26 | Mechanical nut device and bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203201965U true CN203201965U (en) | 2013-09-18 |
Family
ID=49146076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320087785 Expired - Fee Related CN203201965U (en) | 2013-02-26 | 2013-02-26 | Mechanical nut device and bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203201965U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133498A (en) * | 2013-02-26 | 2013-06-05 | 李圣用 | Mechanical nut device and bolt |
-
2013
- 2013-02-26 CN CN 201320087785 patent/CN203201965U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133498A (en) * | 2013-02-26 | 2013-06-05 | 李圣用 | Mechanical nut device and bolt |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130918 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |