A kind of high sealing quick-release bolt for airframeTechnical field
The invention belongs to aerospace technical field of fastening, more particularly to a kind of high sealing for airframe are fastUnload bolt.
Background technology
In use, no waterproof rain-proof requires general bolt, and when screw bolt and nut separates, does not require spiral shellBolt is deviate from from organism component.But there are some important in aircraft maintenance, detection lid and have the electronic maintenance of particular/special requirementLoad lid, not only there is waterproof rain-proof requirement, but also since aircraft maintainability requirement is, it is necessary to safe and accurate, quick assembly and disassembly.
The content of the invention
It is an object of the invention to provide a kind of design rationally, good seal performance, disassembly process do not deviate from from lidHigh sealing quick-release bolt for airframe.
To achieve the above object, the present invention provides following technical solution：A kind of high sealing quick-release spiral shell for airframeBolt includes bolt body, and bolt body includes screw rod and bolt head, external screw thread is provided with screw rod；Close to bolt head on screw rodThe one end in portion is arranged with seal washer；Spiro rod length direction is provided with a plurality of groove on screw rod outer wall；Movable sleeve is gone back on screw rodEquipped with servo-actuated moving-coil, multiple and fit depressions block tongues are provided with servo-actuated moving-coil inner wall；The end of screw rod is equipped with annular snapGroove, is provided with clamp spring in annular slot.
Preferably, one end on screw rod close to bolt head is fixedly installed bushing.
Preferably, the pin hole for fixed circlip is provided with the annular slot.
Preferably, the bolt body selects titanium alloy material.
Preferably, the quantity of the groove is 3.
Preferably, the shape of the bolt head is one kind in coiled hair, countersunk head, round end, turret head or square spigot.
Preferably, open up twisting groove on the bolt head, the groove profile of twisting groove is flat recess, cross recess, interior hexagonal orInterior six spend in one kind.
Compared with prior art, the beneficial effects of the invention are as follows：(1) by installing sealant rubber ring additional on screw rod, bolt is madeIt can seal after installation, if being matched with sealing nut, can guarantee that some electronic maintenance lid waterproof rain-proofs are special completelyIt is different to require；(2) by installing servo-actuated moving-coil, clamp spring additional on screw rod, bolt is not deviate from disassembly process from lid, fill againIt is time saving and energy saving with being mounted directly, it is fast and convenient, misloading will not occur and fill by mistake, greatly improve aircraft maintainability, be mainly used forAviation field.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention.
In figure：1st, bolt head；2nd, seal washer；3rd, it is servo-actuated moving-coil；4th, screw rod；5th, clamp spring；6th, groove；7th, block tongue.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, completeSite preparation describes.
Fig. 1 is referred to, the present invention includes bolt body, and bolt body includes screw rod 4 and bolt head 1, set on screw rod 4There is external screw thread；One end on screw rod 4 close to bolt head 1 is arranged with seal washer 2；Along 4 length direction of screw rod on 4 outer wall of screw rodIt is provided with a plurality of groove 6；Movable sleeve is gone back on screw rod 4 and is equipped with servo-actuated moving-coil 3, multiple and groove 6 is provided with 3 inner wall of servo-actuated moving-coilMatched block tongue 7；The end of screw rod 4 is equipped with annular slot, is provided with clamp spring 5 in annular slot, in the present embodiment, the ringThe pin hole for fixed circlip 5 is provided with shape card slot.
In the present embodiment, one end on screw rod 4 close to bolt head 1 is fixedly installed bushing.
In the present embodiment, the bolt body selects titanium alloy material.
In the present embodiment, the quantity of the groove 6 is 3.
In the present embodiment, the shape of the bolt head 1 is one in coiled hair, countersunk head, round end, turret head or square spigotKind；Open up twisting groove on the bolt head 1, the groove profile of twisting groove is flat recess, cross recess, interior hexagonal or interior six spend in oneKind, so as to meet different the needs of requiring lid.
The operation principle of the present invention：Riveted by bushing and lid, bolt and lid are fixed together；Due to clamp spring 5Stop, servo-actuated moving-coil 3 cannot deviate from bolt, therefore captive blot and lid are combined together；When lid is assembled and disassembled, servo-actuated moving-coil existsIt is free to slide in bolt indentation 6, bolt normal use is not influenced, and captive blot still connects together with lid after dismounting.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be withUnderstanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of changes, modification, replaceAnd modification, the scope of the present invention is defined by the appended.