CN202673957U - Self-locking fastening structure and seal structure - Google Patents
Self-locking fastening structure and seal structure Download PDFInfo
- Publication number
- CN202673957U CN202673957U CN 201220126721 CN201220126721U CN202673957U CN 202673957 U CN202673957 U CN 202673957U CN 201220126721 CN201220126721 CN 201220126721 CN 201220126721 U CN201220126721 U CN 201220126721U CN 202673957 U CN202673957 U CN 202673957U
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- self
- locking
- semi
- nut
- mounting hole
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- Expired - Fee Related
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- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The utility model provides a self-locking fastening structure and a seal structure. The self-locking fastening structure and the seal structure comprise the self-locking fastening structure, an adapting piece I and an adapting piece II. An included angle theta between an axis of the self-locking fastening structure and a fuel tank axis is 14-20 degrees. An annular seal groove with a trapezoidal intersecting surface is machined by the adapting piece II on a butted surface of the adapting piece II and the adapting piece I, and an O-shaped sealing ring is arranged inside the annular seal groove with the trapezoidal intersecting surface. The self-locking fastening structure comprises double hexagon head bolts, gaskets and a self-locking fastening piece, wherein the self-locking fastening piece comprises a semi-circular supporting plate nut and a flexible support. The semi-circular supporting plate nut comprises a self-locking nut, a semi-circular supporting plate and a spring pin, wherein the self-locking nut is arranged on the lower portion of the semi-circular supporting plate and is fixed with the semi-circular supporting plate through the spring pin, the semi-circular supporting plate nut and the flexible support are spliced into a circular cylinder and are formed to be the self-locking fastening piece, the self-locking fastening piece is stuffed in a mounting hole of the self-locking fastening piece, the self-locking fastening piece is fixed in the mounting hole of the self-locking fastening piece by flexibility of the flexible support, and the double hexagon head bolts penetrate through a connecting hole through the gaskets and are connected with the self-locking nut in the mounting hole of the self-locking fastening piece in threaded mode.
Description
Technical field
The utility model relates to a kind of self-locking fixing structure and sealing configuration, belongs to field of mechanical technique.
Background technique
Self-locking screw thread fastening commonly used generally is comprised of bolt, self-locking nut, packing ring etc.According to the user demand of different occasions, self-locking nut also has several forms such as self-locking bracket crab bolt, portable self-locking bracket crab bolt.The self-locking bracket crab bolt be connected the self-locking bracket crab bolt and all need to rivet in advance fixingly with the matrix that will be connected, this fixedly brings difficulty just for the self-locking bracket crab bolt at some non-planar surface positions.Conventional bolt adopts the hexagon head form more in addition, when screwing there are certain requirement (generally needing at least 60 ° of convolution spaces), the interval usage comparison difficulty of narrow space in the spanner space.
Often be divided into a plurality of cabins section during present domestic Missile Design, finish respectively and make and the equipment installation, again these cabin sections are linked together during general assembly, finish the assembling of full bullet.Fuel tank is being born storage, the conveying function of fuel oil as a special cabin section of guided missile, guarantees that the sealing of fuel tank reliably is the primary prerequisite of finishing above-mentioned functions.Usually the guided missile fuel tank adopts welding or casting, mostly is integrative-structure, not separately subdivision manufacturing.Along with scope increases gradually, also be more and more higher to the requirement of innage, cause some guided missile fuel tank size long, fuel tank subdivision section Design and manufacture will be inevitable.Existing Hermetical connecting structure can not satisfy the present stage fuel tank and be tightly connected.
The model utility content
The purpose of this utility model is to overcome the prior art deficiency, self-locking fixing structure and a kind of problem that is tightly connected that can effectively solve between the heavy wool case of a kind of structure and simple installation, little, the applicable various occasions of installing space are provided, and the structure precision requirement is low, the sealing configuration that anufacturability is good.
Technical solution of the present utility model: a kind of self-locking fixing structure, comprise two hexagon head bolts, pad and self-locking fastener, interface processing attachment hole on link I and link II, process the self-locking fastener mounting hole of vertical and attachment hole direction at link II, attachment hole and self-locking fastener mounting hole connect, wherein said self-locking fastener is comprised of semi-round support plate nut and elastic support, described semi-round support plate nut is by self-locking nut, semi-round support plate and resilient key form, semi-round support plate is that cross section is the semicircular column structure of class, at the penetrating step-like mounting hole of the center of column structure processing, the two ends pin hole processing of column structure, self-locking nut is installed in the bottom of step-like mounting hole, and fix by the resilient key and the semi-round support plate that are installed in the pin-and-hole, described elastic support is that cross section is the semicircular hollow cylinder structure of class, hollow cylinder structure two ends respectively process earflap, with semi-round support plate nut and elastic support to becoming cylinder and by the fixing self-locking fastener that forms of earflap, self-locking fastener is filled in the self-locking fastener mounting hole, by the elasticity of elastic support self-locking fastener is fixed in the self-locking fastener mounting hole, two hexagon head bolts penetrate in the attachment hole with self-locking nut in the self-locking fastener mounting hole by pad and are threaded.
The head of described pair of hexagon head bolt is two hexagon heads, and two hexagon heads are that two large hexagons such as grade intersect the dodecagonal exterior contour that forms after 30 ° and consist of.
Described resilient key is that cross section is the hollow annular round column structure of C shape, wall thickness≤0.3mm.
A kind of seal arrangement, comprise self-locking fixing structure, link I and link II, the angle theta of the axis of self-locking fixing structure and fuel tank axis is 14～20 °, link II is trapezoidal annular seal groove at the interface processing cross section with link I, and cross section is the trapezoidal interior O-ring seals of installing of annular seal groove.
The utility model beneficial effect compared with prior art:
(1) the utility model sealing configuration adopts the end face seal form of trapezoidal seal groove, and the oblique self-locking fixing structure of outside employing connects, and under the various loads of guided missile, can guarantee all the time that fuel tank is tightly connected reliably; Each part manufacturing required precision is low, good economy performance; The body outside connects by the self-locking of self-locking fixing structure, and the inner outstanding structure of body is few, lightweight construction; This structure is applied widely, is equally applicable to being tightly connected of other cabin section of guided missile;
(2) the utility model self-locking fixing structure adopts fixedly semi-round support plate nut of elastic support, the semi-round support plate nut need not to be riveted in advance it on matrix, only need to pack in the prefabricated circular hole, get final product with elastic support is fixing, using method is simple, has cancelled conventional riveting step, reduced the production and application cost, improve efficiency, particularly for some special occasions and non-planar surface position, avoided conventional carriage nut can't rivet a fixing difficult problem;
(3) bolt of the utility model self-locking fixing structure adopts two hexagon head designs, has reduced the demand to the spanner space;
(4) self-locking nut of the utility model self-locking fixing structure adopts resilient key and semi-round support plate to fix, and need not to touch the riveting pin nail and can guarantee join strength.
Description of drawings
Fig. 1 is the utility model overall structure schematic representation;
Fig. 2 is the two hexagon head bolt plan views of the utility model;
Fig. 3 is the two hexagon head bolt plan views of the utility model;
Fig. 4 is the utility model semi-round support plate nut side view;
Fig. 5 is the utility model semi-round support plate nut worm's eye view;
Fig. 6 is the utility model semi-round support plate side view;
Fig. 7 is the utility model semi-round support plate worm's eye view;
Fig. 8 is that the utility model Fig. 7 A is to view;
Fig. 9 the utility model self-locking nut plan view;
Figure 10 the utility model self-locking nut side view;
Figure 11 is the utility model resilient key plan view;
Figure 12 is the utility model resilient key side view;
Figure 13 is the utility model elastic support plan view;
Figure 14 is the utility model elastic support side view;
Figure 15 is the utility model elastic support unfolded drawing.
Embodiment
Below in conjunction with accompanying drawing and instantiation the utility model is elaborated.
The utility model as shown in Figure 1, comprise self-locking fixing structure, link I3 and link II 4, the angle theta of the axis of self-locking fixing structure and fuel tank axis is 14～20 °, link II 4 is trapezoidal annular seal groove 9 at the surface of contact processing cross section with link I3, and cross section is trapezoidal annular seal groove 9 interior installation O-ring seals 10.Are connected 11,12 connections of front and back tank bay section in aggregates with link II by link I 3.
The interface of link II 4 is designed with the cross section and is trapezoidal annular seal groove 9, and the O RunddichtringO embeds wherein, and trapezoidal seal groove 9 narrower opening ends can well be fixed the O RunddichtringO, effectively prevent the unusual slippage of O RunddichtringO.Trapezoidal seal groove 9 is by adopting the forming cutter car to make type, and the degree of depth of groove is relevant with the compressibility of O-ring seals, can require to design according to sealing load.
It is 14～20 ° attachment hole 7 that the angle of the processing of interface on link I 3 and link II 4 and fuel tank axis is, attachment hole 7 is uniform on interface, process the self-locking fastener mounting hole 8 of vertical and attachment hole 7 directions at link II 4, attachment hole 7 connects with self-locking fastener mounting hole 8.By being installed in two hexagon head bolts and the semi-round support plate nut in uniform attachment hole 7 and the self-locking fastener mounting hole 8, can be with convenient and reliable being connected and fixed of cabin, front and back section.
The self-locking fixing structure as shown in Figure 1, comprise two hexagon head bolts 1, pad 2 and self-locking fastener, self-locking fastener is comprised of semi-round support plate nut 5 and elastic support 6, self-locking fastener is filled in the self-locking fastener mounting hole 8, elasticity by elastic support 6 is fixed on self-locking fastener in the self-locking fastener mounting hole 8, and two hexagon head bolts 1 penetrate attachment hole 7 self-locking fasteners interior and in the self-locking fastener mounting hole 8 by pad 2 and are threaded.
Two hexagon head bolts 1 are shown in Fig. 2,3, and its head is two hexagon heads, and two hexagon heads are that two large hexagons such as grade intersect the dodecagonal exterior contour that forms after 30 ° and consist of.Two hexagon head bolts can adopt the 30CrMnSiA material, and bolt head adopts two hexagon head designs, adopts the bar heat extrusion compacting, and two hexagon head designs have reduced the rotary space of spanner, compare the space that at least is at half with hexagon head design commonly used.
Semi-round support plate nut 5 is shown in Fig. 4,5, formed by self-locking nut 51, semi-round support plate 52 and resilient key 53, self-locking nut 51 is assembled into one with semi-round support plate 52 by 2 resilient keys 53, can there be certain adjustment amount in the self-locking nut 51 of assembling after finishing at semi-round support plate 52, is beneficial to and being connected of two hexagon head bolts 1.
Self-locking nut 51 is shown in Fig. 9,10, and the bottom is four jiaos and leads round Sifangtai body structure, and top is the barrel nut structure, and the top pin hole processing is in order to install resilient key 53.
Resilient key 53 is shown in Figure 11,12, and cross section is the hollow annular round column structure of C shape, and hollow annular cylinder wall thickness≤0.3mm is to guarantee its elasticity.Resilient key 53 is installed in and need not the tactile riveting in two ends in the pin-and-hole, by himself elasticity assurance join strength.
Elastic support 6 is shown in Figure 13,14,15, and cross section is the semicircular hollow cylinder structure of class, and hollow cylinder structure two ends respectively process earflap 56, and 6 pairs of semi-round support plate nut 5 and elastic support are become cylinder and fix the composition self-locking fasteners by earflap 56.Elastic support 6 bends moulding by stainless steel materials, presses first Figure 15 blanking, bends moulding again.Elastic support 6 can be combined into a complete cylinder with semicircle carriage nut 5, and the elasticity by elastic support 6 self can be fixed on semi-round support plate nut 5 on the suitable position.
The unspecified part of the utility model is technology as well known to those skilled in the art.
Claims (4)
1. self-locking fixing structure, it is characterized in that: comprise two hexagon head bolts (1), pad (2) and self-locking fastener, interface processing attachment hole (7) on link I (3) and link II (4), process the self-locking fastener mounting hole (8) of vertical and attachment hole (7) direction at link II (4), attachment hole (7) connects with self-locking fastener mounting hole (8), wherein said self-locking fastener is comprised of semi-round support plate nut (5) and elastic support (6), described semi-round support plate nut (5) is by self-locking nut (51), semi-round support plate (52) and resilient key (53) form, semi-round support plate (52) is column structure, at the penetrating step-like mounting hole (55) of the center of column structure processing, the two ends pin hole processing (54) of column structure, self-locking nut (51) is installed in the bottom of step-like mounting hole (55), and fixing with semi-round support plate (52) by the resilient key (53) that is installed in the pin-and-hole (54), described elastic support (6) is the hollow cylinder structure, hollow cylinder structure two ends respectively process earflap (56), semi-round support plate nut (5) is formed self-locking fastener with elastic support (6) to becoming cylinder also to fix by earflap (56), self-locking fastener is filled in the self-locking fastener mounting hole (8), elasticity by elastic support (6) is fixed on self-locking fastener in the self-locking fastener mounting hole (8), and two hexagon head bolts (1) penetrate attachment hole (7) self-locking nut (51) interior and in the self-locking fastener mounting hole (8) by pad (2) and are threaded.
2. a kind of self-locking fixing structure according to claim 1 is characterized in that: the head of described pair of hexagon head bolt (1) is two hexagon heads, and two hexagon heads are that two large hexagons such as grade intersect the dodecagonal exterior contour that forms after 30 ° and consist of.
3. a kind of self-locking fixing structure according to claim 1, it is characterized in that: described resilient key (53) is the hollow annular round column structure of C shape for cross section, wall thickness≤0.3mm.
4. sealing configuration that utilizes self-locking fixing structure claimed in claim 1, it is characterized in that: comprise self-locking fixing structure, link I (3) and link II (4), the angle theta of the axis of self-locking fixing structure and fuel tank axis is 14～20 °, link II (4) is trapezoidal annular seal groove (9) at the interface processing cross section with link I (3), and cross section is the trapezoidal interior O-ring seals (10) of installing of annular seal groove (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220126721 CN202673957U (en) | 2012-03-30 | 2012-03-30 | Self-locking fastening structure and seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220126721 CN202673957U (en) | 2012-03-30 | 2012-03-30 | Self-locking fastening structure and seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202673957U true CN202673957U (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220126721 Expired - Fee Related CN202673957U (en) | 2012-03-30 | 2012-03-30 | Self-locking fastening structure and seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202673957U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619860A (en) * | 2012-03-30 | 2012-08-01 | 北京机电工程研究所 | Self locking fastening structure and sealing structure |
| CN110700345A (en) * | 2019-11-15 | 2020-01-17 | 中国船舶重工集团公司第十二研究所 | Dredging reamer tooth system |
-
2012
- 2012-03-30 CN CN 201220126721 patent/CN202673957U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619860A (en) * | 2012-03-30 | 2012-08-01 | 北京机电工程研究所 | Self locking fastening structure and sealing structure |
| CN110700345A (en) * | 2019-11-15 | 2020-01-17 | 中国船舶重工集团公司第十二研究所 | Dredging reamer tooth system |
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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: 20130116 Termination date: 20150330 |
|
| EXPY | Termination of patent right or utility model |