CN102619860B - Self locking fastening structure and sealing structure - Google Patents
Self locking fastening structure and sealing structure Download PDFInfo
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- CN102619860B CN102619860B CN2012100885858A CN201210088585A CN102619860B CN 102619860 B CN102619860 B CN 102619860B CN 2012100885858 A CN2012100885858 A CN 2012100885858A CN 201210088585 A CN201210088585 A CN 201210088585A CN 102619860 B CN102619860 B CN 102619860B
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Abstract
The invention discloses a self locking fastening structure and a sealing structure. The sealing structure comprises a self locking fastening structure, a connecting element I and a connecting element II, wherein an included angle theta between an axis of the self locking fastening structure and an axis of an oil tank ranges from 14 degrees to 20 degrees, a ring sealing groove with a trapezoidal transverse section is processed on a butt joint surface of the connecting element II and the connecting element I, and an O-shaped sealing ring is arranged in the ring sealing groove with the trapezoidal transverse section. The self locking fastening structure comprises a double hexagon headed bolt, a gasket and a self locking fastening element, wherein the self locking fastening element is composed of a semi-circle supporting plate nut and an elastic support, the semi-circle supporting plate nut is composed of a self locking nut, a semi-circle supporting plate and a spring pin, the self locking nut is arranged on the lower portion of the semi-circle supporting plate and is fixed with the semi-circle supporting plate by the spring pin, the semi-circle supporting plate nut and the spring support are combined to be a cylinder to form the self locking fastening element, the self locking fastening element is inserted into an installing hole of the self locking fastening element and is fixed in the installing hole of the self locking fastening element by the aid of elasticity of the elastic support, and the double hexagon headed bolt penetrates into a connecting hole through the gasket and is in a threaded connection with the self locking nut in the installing hole of the self locking fastening element.
Description
Technical field
The present invention relates to a kind of self-locking fixing structure and sealing configuration, belong 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.Self-locking bracket crab bolt and portable self-locking bracket crab bolt all need to rivet in advance fixingly with the matrix that will be connected, and this fixedly brings difficulty just to the self-locking bracket crab bolt at some non-planar surface positions.The bolt of another routine adopts the hexagon head form more, while screwing, there is to certain requirement (generally needing at least 60 ° of convolution spaces) in the spanner space, and the interval use of narrow space is more difficult.
Often be divided into a plurality of cabins section during current domestic Missile Design, complete respectively and manufacture and the equipment installation, again these cabin sections are linked together during general assembly, complete the assembling of full bullet.Fuel tank, as a special cabin section of guided missile, is being born storage, the conveying function of fuel oil, guarantees that the sealing of fuel tank has been reliably the primary prerequisite of above-mentioned functions.Usually the guided missile fuel tank adopts welding or casting, mostly is integrative-structure, not subdivision manufacture separately.Along with scope increases gradually, to the requirement of innage, be also more and more higher, cause some guided missile fuel tank size long, fuel tank subdivision section Design and manufacture will be inevitable.Existing Hermetical connecting structure, can not meet the present stage fuel tank and be tightly connected.
Summary of the invention
The object of the invention 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 invention: 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 on 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, process penetrating step-like mounting hole at the center of column structure, the two ends pin hole processing of column structure, self-locking nut is arranged on the bottom of step-like mounting hole, and fix by the resilient key and the semi-round support plate that are arranged in 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, by semi-round support plate nut and elastic support to becoming cylinder and fixing and form self-locking fastener by earflap, self-locking fastener is filled in the self-locking fastener mounting hole, elasticity by elastic support is fixed on self-locking fastener in the self-locking fastener mounting hole, two hexagon head bolts penetrate in attachment hole and are threaded with the self-locking nut in the self-locking fastener mounting hole by pad.
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 after 30 ° the dodecagonal exterior contour formed and form.
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 °, it is trapezoidal annular seal groove that link II processes cross section on the interface with link I, and cross section is the trapezoidal interior O-ring seals of installing of annular seal groove.
The present invention's beneficial effect compared with prior art:
(1) sealing configuration of the present invention adopts the end face seal form of trapezoidal seal groove, and the oblique self-locking fixing structure of outside employing is connected, 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) self-locking fixing structure of the present invention adopts fixedly semi-round support plate nut of elastic support, the semi-round support plate nut is without being riveted in advance on matrix by it, only need to pack in prefabricated circular hole, with elastic support is fixing, get final product, 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 self-locking fixing structure of the present invention adopts two hexagon head designs, has reduced the demand to the spanner space;
(4) self-locking nut of self-locking fixing structure of the present invention adopts resilient key and semi-round support plate to fix, and without tactile riveting pin nail, can guarantee join strength.
The accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is the two hexagon head bolt plan views of the present invention;
Fig. 3 is the two hexagon head bolt plan views of the present invention;
Fig. 4 is semi-round support plate nut side view of the present invention;
Fig. 5 is semi-round support plate nut worm's eye view of the present invention;
Fig. 6 is semi-round support plate side view of the present invention;
Fig. 7 is semi-round support plate worm's eye view of the present invention;
Fig. 8 is that Fig. 7 A of the present invention is to view;
Fig. 9 self-locking nut plan view of the present invention;
Figure 10 self-locking nut side view of the present invention;
Figure 11 is resilient key plan view of the present invention;
Figure 12 is resilient key side view of the present invention;
Figure 13 is elastic support plan view of the present invention;
Figure 14 is elastic support side view of the present invention;
Figure 15 is elastic support unfolded drawing of the present invention.
Embodiment
Below in conjunction with accompanying drawing and instantiation, the present invention is described in detail.
The present invention as shown in Figure 1, 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 °, it is trapezoidal annular seal groove 9 that link II 4 processes cross section on the surface of contact with link I 3, and cross section is the trapezoidal interior installation O-ring seals 10 of annular seal groove 9.By link I 3, with link II 4, by front and back tank bay section 11,12, be connected in aggregates.
The interface of link II 4 is designed with cross section and is trapezoidal annular seal groove 9, and the O RunddichtringO embeds wherein, and the narrower opening end of trapezoidal seal groove 9 can well be fixed the O RunddichtringO, effectively prevents the abnormal 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 to the compressibility of O-ring seals, can require to be designed according to sealing load.
It is the attachment hole 7 of 14～20 ° 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 on link II 4, attachment hole 7 connects with self-locking fastener mounting hole 8.By being arranged on two hexagon head bolts and the semi-round support plate nut in uniform attachment hole 7 and self-locking fastener mounting hole 8, can be by 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 self-locking fastener mounting hole 8, elasticity by elastic support 6 is fixed on self-locking fastener in self-locking fastener mounting hole 8, and two hexagon head bolts 1 penetrate in attachment hole 7 and are threaded with the self-locking fastener in self-locking fastener mounting hole 8 by pad 2.
As shown in Figure 2,3, its head is two hexagon heads to two hexagon head bolts 1, and two hexagon heads are that two large hexagons such as grade intersect after 30 ° the dodecagonal exterior contour formed and form.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, with hexagon head design commonly used, compare the space that at least is at half.
Semi-round support plate nut 5 as shown in Figure 4,5, by self-locking nut 51, semi-round support plate 52 and resilient key 53, formed, 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 self-locking nut 51 after having assembled on semi-round support plate 52, is beneficial to and being connected of two hexagon head bolts 1.
Self-locking nut 51 is as shown in Fig. 9,10, and bottom is four jiaos of Dao Yuan Sifangtai body structures, and top is the barrel nut structure, and the top pin hole processing is in order to install resilient key 53.
As shown in Figure 11,12, cross section is the hollow annular round column structure of C shape to resilient key 53, and hollow annular cylinder wall thickness≤0.3mm, to guarantee its elasticity.Resilient key 53 is arranged in pin-and-hole and touches riveting without two ends, by himself elasticity assurance join strength.
The unspecified part of the present invention is known to the skilled person technology.
Claims (4)
1. a 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), self-locking fastener mounting hole (8) in the upper processing of link II (4) perpendicular to attachment hole (7) direction, 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 the semicircular column structure of class for cross section, process penetrating step-like mounting hole (55) at the center of column structure, the two ends pin hole processing (54) of column structure, self-locking nut (51) is arranged on the bottom of step-like mounting hole (55), and fixing with semi-round support plate (52) by the resilient key (53) be arranged in pin-and-hole (54), described elastic support (6) is the semicircular hollow cylinder structure of class for cross section, hollow cylinder structure two ends respectively are processed with earflap (56), semi-round support plate nut (5) is fixed to the composition self-locking fastener with elastic support (6) to becoming cylinder also to pass through earflap (56), self-locking fastener is filled in self-locking fastener mounting hole (8), elasticity by elastic support (6) is fixed on self-locking fastener in self-locking fastener mounting hole (8), two hexagon head bolts (1) penetrate in attachment hole (7) and are threaded with the self-locking nut (51) in self-locking fastener mounting hole (8) by pad (2).
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 after 30 ° the dodecagonal exterior contour formed and form.
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. a seal arrangement 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 °, it is trapezoidal annular seal groove (9) that link II (4) processes cross section on the interface 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 |
|---|---|---|---|
| CN2012100885858A CN102619860B (en) | 2012-03-30 | 2012-03-30 | Self locking fastening structure and sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100885858A CN102619860B (en) | 2012-03-30 | 2012-03-30 | Self locking fastening structure and sealing structure |
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| Publication Number | Publication Date |
|---|---|
| CN102619860A CN102619860A (en) | 2012-08-01 |
| CN102619860B true CN102619860B (en) | 2013-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012100885858A Active CN102619860B (en) | 2012-03-30 | 2012-03-30 | Self locking fastening structure and sealing structure |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104567561B (en) * | 2013-10-28 | 2015-12-02 | 北京临近空间飞行器系统工程研究所 | A kind of distinguish that is applicable to throws the special-shaped configuration missile cabin syndeton of covering |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2381830Y (en) * | 1998-10-25 | 2000-06-07 | 骆长虹 | Hydraulic nut |
| FR2878539B1 (en) * | 2004-11-30 | 2008-10-10 | Norinco Soc Par Actions Simpli | DEVICE FOR REMOVABLE LOCKING OF A BUFFER OR COVER ON A FRAME |
| CN201170314Y (en) * | 2008-02-21 | 2008-12-24 | 自贡兆强密封制品实业有限公司 | Mechanical sealing device for side-installed type stirrer |
| CN201326737Y (en) * | 2008-12-29 | 2009-10-14 | 中国第一重型机械股份公司 | Slotless sealing structure between planes |
| CN202673957U (en) * | 2012-03-30 | 2013-01-16 | 北京机电工程研究所 | Self-locking fastening structure and seal structure |
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