CN215720091U

CN215720091U - Gear groove anti-drop bolt for aviation

Info

Publication number: CN215720091U
Application number: CN202122020267.5U
Authority: CN
Inventors: 徐运洲; 禹立新; 廉成
Original assignee: Suzhou Hangtai Machinery Technology Co ltd
Current assignee: Suzhou Hangtai Machinery Technology Co ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2022-02-01
Anticipated expiration: 2031-08-25

Abstract

The utility model discloses an anti-drop bolt for an aviation gear groove, which belongs to the technical field of anti-drop bolts and comprises an anti-drop bolt group, wherein the anti-drop bolt group comprises a bolt component, an anti-drop component and a nut, when the anti-drop bolt group is installed, the nut is screwed in from a reverse thread position, when the nut is screwed in the position of a lower end through groove, the lower anti-drop component is rotated, so that a first rotating shaft can rotate on the inner wall of the through groove and outwards expand, a limiting rod can outwards expand, the inner wall of the nut is extruded, the nut can not outwards fall off, when the mounting plate is thicker, the nut is screwed in the lower part of the lower through groove, the lower anti-drop component is rotated, so that the first rotating shaft can rotate on the inner wall of the through groove, after the nut outwards expands, a hook head fastens the mounting plate, the limiting rod and the hook head can fix the mounting plate after the nut rusts, thereby achieving the anti-falling function.

Description

Gear groove anti-drop bolt for aviation

Technical Field

The utility model belongs to the technical field of anti-drop bolts, and particularly relates to an anti-drop bolt for an aviation gear groove.

Background

Bolt: mechanical parts, cylindrical threaded fasteners fitted with nuts. A fastener consisting of a head part and a screw (a cylinder with external threads) needs to be matched with a nut and is used for fastening and connecting two parts with through holes. This form of connection is known as a bolted connection. If the nut is unscrewed from the bolt, the two parts can be separated, so that the bolt connection belongs to detachable connection. Conventional and reamed. The common bearing mainly bears axial stress and can also bear transverse stress with low requirements. The bolts used to ream the holes are sized to match the hole size and to be used when subjected to lateral forces.

In aviation equipment, if the bolt falls off, the bolt is extremely dangerous, but the existing bolt can fall off in a long-time vibration process after being tightened, so that the danger is increased.

SUMMERY OF THE UTILITY MODEL

The utility model provides an anti-falling bolt of a gear slot for aviation, aiming at the problem that great danger is caused if the bolt falls off in the existing aviation equipment, but the existing bolt may fall off in the long-time vibration process after being screwed down, so that the danger is increased.

In order to solve the above problems, the present invention adopts the following technical solutions.

The utility model provides an aviation is with gear groove anti-drop bolt, includes anti-drop bolt group, anti-drop bolt group include bolt assembly, anti-drop subassembly and nut, anti-drop subassembly assemble in bolt assembly's inside, the nut assembly is at bolt assembly's lower extreme, anti-drop subassembly include interior hexagon head, interior hexagon head lower extreme be equipped with the second threaded rod, the lower extreme of second threaded rod rotates and is connected with the dwang, the bottom circumference array of dwang has a plurality of second pivots, the outer wall of every second pivot is equipped with the connecting rod, the one end of connecting rod rotates and is connected with the gag lever post, the first pivot of symmetry is equipped with on the position that the gag lever post upper end is close to both sides, the lower extreme of first pivot is equipped with the gib head, can catch on the outer wall of nut through the gib head, can avoid its rotation.

Preferably, the bolt assembly include the hexagon head, hexagon head lower extreme be equipped with the inserted bar, the inserted bar is provided with the forward screw on being close to the position of upper end, is provided with reverse screw on being close to the position of lower extreme, and the through-hole is provided with the internal thread on being close to the inner wall at both ends.

Preferably, the outer wall of reverse screw thread and forward screw thread on be provided with a plurality of logical grooves, the upper and lower both ends face of hexagonal head is provided with the through-hole, can be difficult for droing more when the assembly nut through the screw thread of forward screw thread and reverse screw thread is opposite, can prevent through the anti-drop subassembly that the nut from droing.

Preferably, the second threaded rod is in threaded connection with the inner wall of the through hole, the first rotating shaft is in rotating connection with the inner wall of the through groove, and the nut is screwed in from the reverse thread.

Advantageous effects

Compared with the prior art, the utility model has the beneficial effects that:

(1) according to the anti-falling bolt set, when the anti-falling bolt set is installed, the nut is screwed in from the reverse thread, when the anti-falling assembly below is screwed in the lower end through groove, the first rotating shaft can rotate on the inner wall of the through groove and outwards expand, the limiting rod can outwards expand and extrude the inner wall of the nut, the nut can not outwards fall off, when the installation plate is thick, the nut is screwed in the lower portion of the through groove below, the anti-falling assembly below is rotated, the first rotating shaft can rotate on the inner wall of the through groove, after the limiting rod and the hook head outwards expand, the hook head fastens the installation plate, the limiting rod and the hook head can fix the installation plate after the nut is rusted, and therefore the anti-falling effect can be achieved.

(2) According to the utility model, when the mounting plate is thin, the nut is screwed in from the reverse thread, and the nut needs to rotate reversely when being screwed in to the forward thread, so that the lower anti-falling component is unfolded to drag the lower end of the nut, the upper anti-falling component is unfolded to drag the bottom of the mounting plate, multiple protection is realized, and the reverse thread can reduce downward sliding of the nut during vibration.

Drawings

FIG. 1 is a schematic structural view of an anti-drop bolt for an aviation gear groove;

FIG. 2 is a schematic view of a bolt assembly according to the present invention;

FIG. 3 is a schematic view of the anti-falling off assembly of the present invention;

FIG. 4 is an enlarged view of the structure at A in the present invention.

The corresponding relationship between the reference numbers of the figures and the names of the components in the figures is as follows:

1. an anti-drop bolt set;

2. a bolt assembly; 21. a hexagonal head; 22. inserting a rod; 23. a through groove; 24. reverse threads; 25. a through hole;

26. a positive thread;

3. an anti-drop assembly; 31. a hexagon socket head; 32. a second threaded rod; 33. rotating the rod; 34. a limiting rod;

35. a first rotating shaft; 36. a connecting rod; 37. a second rotating shaft; 38. a hook head;

4. and (4) a nut.

Detailed Description

The utility model is further described below in connection with specific embodiments.

Example 1

As shown in fig. 1, which is a schematic structural view of an aviation gear slot anti-drop bolt according to a preferred embodiment of the present invention, the aviation gear slot anti-drop bolt according to the present embodiment includes an anti-drop bolt set 1, where the anti-drop bolt set 1 includes a bolt component 2, an anti-drop component 3, and a nut 4, the anti-drop component 3 is assembled inside the bolt component 2, and the nut 4 is assembled at a lower end of the bolt component 2.

As shown in fig. 2, which is a schematic structural diagram of the bolt assembly of the present invention, the bolt assembly 2 includes a hexagonal head 21, an insert rod 22 is assembled at a lower end of the hexagonal head 21, a forward thread 26 is disposed at a position of the insert rod 22 near an upper end, a reverse thread 24 is disposed at a position near a lower end, a plurality of through grooves 23 are disposed on outer walls of the reverse thread 24 and the forward thread 26, through holes 25 are disposed on upper and lower end surfaces of the hexagonal head 21, and internal threads are disposed on inner walls of the through holes 25 near both ends; the through-hole 25 and the through groove 23 through both ends are used for assembling the drop-off preventive member 3.

As shown in fig. 3-4, which is a schematic structural view of the anti-drop assembly in the present invention, the anti-drop assembly 3 includes a hexagon socket head 31, a second threaded rod 32 is assembled at the lower end of the hexagon socket head 31, a rotating rod 33 is rotatably connected to the lower end of the second threaded rod 32, a plurality of second rotating shafts 37 are circumferentially arrayed at the bottom of the rotating rod 33, a connecting rod 36 is assembled on the outer wall of each second rotating shaft 37, a limiting rod 34 is rotatably connected to one end of the connecting rod 36, symmetrical first rotating shafts 35 are assembled at positions on the upper end of the limiting rod 34 close to both sides, and a hook 38 is assembled at the lower end of the first rotating shaft 35; through rotating hexagon socket head 31 for second threaded rod 32 moves down at through-hole 25, thereby can make first pivot 35 rotatory on the inner wall that leads to groove 23, and outwards expand, thereby can pin nut 4, reach anti-drop's effect.

The second threaded rod 32 is in threaded connection with the inner wall of the through hole 25, the first rotating shaft 35 is in rotating connection with the inner wall of the through groove 23, and the nut 4 is screwed in from the reverse thread 24.

The theory of operation, when installation anti-drop bolt group 1, with nut 4 from reverse screw thread 24 screw in, when the position that the groove 23 was led to the screw in lower extreme, rotate the anti-drop subassembly 3 of below, make and to make first pivot 35 rotatory on the inner wall that leads to the groove 23, and outwards launch, thereby can make gag lever post 34 outwards launch, the inner wall of extrusion nut 4, thereby can make nut 4 can not outwards drop, when the mounting panel is thick, when nut 4 twists the below that the groove 23 was led to the below, rotate the anti-drop subassembly 3 of below, make and to make first pivot 35 rotatory on the inner wall that leads to the groove 23, and outwards launch the back, gib head 38 straining mounting panel, gag lever post 34 and gib head 38 can fix the mounting panel after nut 4 rusts, thereby can reach anti-drop.

Example 2

As shown in fig. 1 to 4, which are schematic structural views of an aviation gear slot anti-drop bolt according to another preferred embodiment of the present invention, in an aviation gear slot anti-drop bolt according to this embodiment, on the basis of embodiment 1, when a mounting plate is thin, a nut 4 is screwed in from a reverse thread 24, and when the mounting plate is screwed in to a forward thread 26, a reverse rotation is required, at this time, a lower anti-drop component 3 is unfolded, a lower end of the nut 4 is dragged, and an upper anti-drop component 3 is unfolded to be able to drag a bottom of the mounting plate, so that multiple protection is achieved, and the opposite threads can reduce downward sliding of the nut 4 during vibration.

While the utility model has been described in further detail in connection with specific embodiments thereof, it will be understood that the utility model is not limited thereto, and that various other modifications and substitutions may be made by those skilled in the art without departing from the spirit of the utility model, which should be considered to be within the scope of the utility model as defined by the appended claims.

Claims

1. An aviation gear groove anti-drop bolt comprises an anti-drop bolt group (1), wherein the anti-drop bolt group (1) comprises a bolt component (2), an anti-drop component (3) and a nut (4), the anti-drop component (3) is assembled inside the bolt component (2), the nut (4) is assembled at the lower end of the bolt component (2),

the method is characterized in that:

anti-drop subassembly (3) including interior hexagonal head (31), interior hexagonal head (31) lower extreme be equipped with second threaded rod (32), the lower extreme of second threaded rod (32) rotates and is connected with dwang (33), the bottom circumference array of dwang (33) has a plurality of second pivot (37), the outer wall of every second pivot (37) is equipped with connecting rod (36), the one end of connecting rod (36) is rotated and is connected with gag lever post (34), be equipped with first pivot (35) of symmetry on the position that gag lever post (34) upper end is close to both sides, the lower extreme of first pivot (35) is equipped with gib head (38).

2. The aviation gear groove anti-drop bolt of claim 1, characterized in that: bolt assembly (2) including hexagonal head (21), hexagonal head (21) lower extreme be equipped with inserted bar (22), inserted bar (22) are provided with forward screw thread (26) on being close to the position of upper end, are provided with reverse screw thread (24) on being close to the position of lower extreme, and through-hole (25) are provided with the internal thread on being close to the inner wall at both ends.

3. The aviation gear groove anti-drop bolt of claim 2, characterized in that: the outer walls of the reverse threads (24) and the forward threads (26) are provided with a plurality of through grooves (23), and the upper end face and the lower end face of the hexagonal head (21) are provided with through holes (25).

4. The aviation gear groove anti-drop bolt of claim 1, characterized in that: the second threaded rod (32) is in threaded connection with the inner wall of the through hole (25), the first rotating shaft (35) is in rotating connection with the inner wall of the through groove (23), and the nut (4) is screwed in from the reverse thread (24).