CN109927868A - The fixed structure of tuning for Controllable Pitch Propeller - Google Patents
The fixed structure of tuning for Controllable Pitch Propeller Download PDFInfo
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- CN109927868A CN109927868A CN201910095588.6A CN201910095588A CN109927868A CN 109927868 A CN109927868 A CN 109927868A CN 201910095588 A CN201910095588 A CN 201910095588A CN 109927868 A CN109927868 A CN 109927868A
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- counterbore
- screw cap
- rotation preventing
- preventing device
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Abstract
The invention discloses a kind of fixed structures of tuning for Controllable Pitch Propeller, belong to Ship Propeling technical field.When connecting the crank disc and blade of tuning for Controllable Pitch Propeller using fixed structure, the end of thread of blade root bolt is connect with crank disc, and the screw cap end of blade root bolt is located in the counterbore on blade, and screw cap end is hexagon.One rotation preventing device to offset with nut end side surface is set between the side of screw cap end and the side wall of counterbore, and the side wall of rotation preventing device and counterbore is fixed, thus the position of blade root bolt can be fixed.And then filler material is set between blade root bolt and counterbore, by the gap filling between rotation preventing device, blade root bolt and counterbore.Rotation preventing device is located in counterbore when this set, and filler material can play the role of for rotation preventing device being sealed in counterbore, and the connection between rotation preventing device and counterbore is avoided to be destroyed, and effectively prevent the loosening of blade root bolt.
Description
Technical field
The present invention relates to Ship Propeling technical field, in particular to a kind of fixed structure of tuning for Controllable Pitch Propeller.
Background technique
Tuning for Controllable Pitch Propeller is a part of marine propulsion, and structure mainly includes blade and propeller hub, and blade is fixedly mounted on
On the firm crank disc of paddle, and current blade is usually the connection realized by multiple blade root bolts with crank disc, and uses one
Nut of the steel wire respectively with multiple blade root bolts is welded and fixed, and rotating to avoid blade root bolt influences blade work.But due to paddle
Load and vibration when leaf works is larger, and the vibration of blade is easily destroyed the connection between steel wire and blade root bolt, and then goes out
The case where existing blade root bolt looseness influences the normal work of blade.
Summary of the invention
The embodiment of the invention provides a kind of fixed structures of tuning for Controllable Pitch Propeller, can effectively prevent the loosening of blade root bolt.
The technical solution is as follows:
The embodiment of the invention provides a kind of fixed structure of tuning for Controllable Pitch Propeller, the fixed structure is suitable for connecting the roll adjustment
The blade and crank disc of paddle, the fixed structure include blade root bolt, rotation preventing device and filler material, the end of thread of the blade root bolt
For being threadedly engaged with the crank disc, the screw cap end of the blade root bolt is arranged in the counterbore of the blade, the nut
End is hexagon,
The rotation preventing device is placed between the screw cap end and the side wall of the counterbore, the rotation preventing device and the screw cap end
Side offsets, and the rotation preventing device is each attached on the side wall of the counterbore, in the rotation preventing device, the counterbore and the blade root spiral shell
The filler material is filled in gap between the screw cap end of bolt.
Optionally, the rotation preventing device includes the hemisphere of cylinder body Yu the cylinder body both ends, described hemispheroidal
On the axis of the cylinder body, the side wall of the cylinder body and a side of the screw cap end offset the centre of sphere, described
The end face of the axis of the rotation preventing device screw cap end in parallel.
Optionally, it is provided with the plectane coaxial with the screw cap end between the screw cap end and the end of thread of the blade root bolt,
The face area of the screw cap end is less than the face area of the plectane.
Optionally, the plectane close to the screw cap end an end face and the rotation preventing device minimum range be 0~
3mm。
Optionally, the difference of the distance between two parallel sides of the diameter of the plectane and the screw cap end be 0~
3mm。
Optionally, the ratio between height of the thickness of the plectane and the screw cap end is 2:1~1:1.
Optionally, the material of the filler material is epoxy resin.
Optionally, annular groove, the axis of the annular groove and the screw cap end are offered on the side wall of the counterbore
Axis be overlapped.
Optionally, the fixed structure further includes locking plate, and the locking plate is covered on the counterbore, the locking plate
It is fixed on the blade, the axis of the vertical screw cap end of the plate face of the locking plate.
The embodiment of the invention provides a kind of installation methods of the fixed structure of tuning for Controllable Pitch Propeller, which comprises
The described method includes:
The fixed structure of foregoing tuning for Controllable Pitch Propeller is provided；
Blade root in the fixed structure is bolted to the blade and crank disc of the tuning for Controllable Pitch Propeller, the blade root bolt
The end of thread is used for and the crank disc is threadedly engaged, and the screw cap end of the blade root bolt is arranged in the counterbore of the blade, institute
Stating screw cap end is hexagon；
Card sets the rotation preventing device in the fixed structure, the rotation preventing device between the screw cap end and the side wall of the counterbore
It offsets with a side of the screw cap end；
Weld the side wall of the rotation preventing device Yu the counterbore；
To fixed structure described in the gap filling between the screw cap end of the rotation preventing device, the counterbore and the blade root bolt
In filler material, by the clearance seal between the screw cap end of the counterbore and the blade root bolt.
Technical solution provided in an embodiment of the present invention has the benefit that the song using fixed structure connection tuning for Controllable Pitch Propeller
When handle disk and blade, the end of thread of blade root bolt is connect with crank disc, and the screw cap end of blade root bolt is located in the counterbore on blade,
Screw cap end is hexagon.One anti-rotation to offset with nut end side surface is set between the side of screw cap end and the side wall of counterbore
Part, and the side wall of rotation preventing device and counterbore is fixed, thus the position of blade root bolt can be fixed.And then blade root bolt with
Filler material is set between counterbore, by the gap filling between rotation preventing device, blade root bolt and counterbore.Rotation preventing device position when this set
In in counterbore, filler material can play the role of for rotation preventing device being sealed in counterbore, avoid connection between rotation preventing device and counterbore by
To destruction, it effectively prevent the loosening of blade root bolt.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described,
Fig. 1 is the assembling schematic diagram of the fixed structure of tuning for Controllable Pitch Propeller provided in an embodiment of the present invention；
Fig. 2 is the top view of blade root bolt provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of rotation preventing device provided in an embodiment of the present invention；
Fig. 4 is a kind of installation method flow chart of the fixed structure of tuning for Controllable Pitch Propeller provided in an embodiment of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 is the assembling schematic diagram of the fixed structure of tuning for Controllable Pitch Propeller provided in an embodiment of the present invention.As shown in Figure 1, fixed knot
Structure is suitable for connecting the blade 1 and crank disc (not shown) of tuning for Controllable Pitch Propeller, and fixed structure includes blade root bolt 2,3 and of rotation preventing device
The counterbore 11 of blade 1 is arranged in filler material 4, the 21 connecting crank disk of the end of thread of blade root bolt 2, the screw cap end 22 of blade root bolt 2
Interior, screw cap end 22 is hexagon.
Rotation preventing device 3 and filler material 4, rotation preventing device 3 are placed between screw cap end 22 and the side wall 111 of counterbore 11, rotation preventing device 3 with
At least one side 212a one-to-one correspondence of screw cap end 22 offsets, and rotation preventing device 3 is each attached on the side wall 111 of counterbore 11, filling
Material 4 is by the clearance seal between the head 21 of rotation preventing device 3, counterbore 11 and blade root bolt 2.
Fig. 1 is the top view of blade root bolt provided in an embodiment of the present invention, sees Fig. 1 and Fig. 2.Blade root bolt 2 connects roll adjustment
After the crank disc and blade 1 of paddle, the screw cap end 22 of blade root bolt 2 is located in the counterbore 11 on blade 1, and screw cap end 22 is six ribs
Cylindricality, 22 screw cap end 22 of screw cap end.Screw cap end 22 is arranged one between the side 212a of screw cap end 22 and the side wall 111 of counterbore 11
A rotation preventing device 3 to offset with 22 side 212a of screw cap end, and the side wall 111 of rotation preventing device 3 and counterbore 11 is fixed, it thus can be to leaf
The position of root bolt 2 is fixed.And then filler material 4 is set between blade root bolt 2 and counterbore 11, by rotation preventing device 3, blade root spiral shell
Gap filling between bolt 2 and counterbore 11.Rotation preventing device 3 is located in counterbore 11 when this set, and filler material 4 can be played anti-rotation
Part 3 is sealed in the effect in counterbore 11, and the connection between rotation preventing device 3 and counterbore 11 is avoided to be destroyed, and effectively prevent blade root spiral shell
The loosening of bolt 2.
Rotation preventing device 3 is solderable to be fixed on the side wall 111 of counterbore 11, and this structure is easily achieved rotation preventing device 3 and counterbore 11
Side wall 111 between connection, cost of manufacture is relatively low with occupied space.Also rotation preventing device 3 can be fixed on more stablely
On counterbore 11, guarantee that rotation preventing device 3 limits the effect that blade root bolt 2 rotates.
Fig. 3 is the structural schematic diagram of rotation preventing device provided in an embodiment of the present invention, as shown in figure 3, rotation preventing device 3 may include cylinder
Main body 31 and the hemisphere 32 that 31 both ends of cylinder body are arranged in, the centre of sphere of hemisphere 32 are prevented on the axis of cylinder body 31
The side wall for turning part 3 and a side 212a of screw cap end 22 offset, the end face of the parallel screw cap end 22 of the axis of rotation preventing device 3.It will prevent
Turning part 3 includes cylinder body 31 and the side wall of rotation preventing device 3 and a side 212a of screw cap end 22 being offseted, rotation preventing device 3 and
Contact area between screw cap end 22 is larger, and screw cap end 22 can be effectively prevent to rotate, and then blade root bolt 2 is avoided to occur to turn
It is dynamic.And the hemisphere 32 at 31 both ends of cylinder body can reduce to a certain extent between rotation preventing device 3 and the side wall 111 of counterbore 11 away from
From increasing the bonding area between rotation preventing device 3 and side wall 111, guarantee the bonding strength of rotation preventing device 3 and counterbore 11.
In other situations provided in an embodiment of the present invention, rotation preventing device 3 can also be rectangular parallelepiped structure or cylindrical structure, sheet
It invents without limitation.And in other situations provided in an embodiment of the present invention, rectangular parallelepiped structure or cylindrical structure it is anti-
Turn to may be provided with chamfering on two end faces of part 3.Chamfering is set on two end faces of rotation preventing device 3, on the one hand can be convenient for anti-rotation
The placement of part 3, on the other hand since the side wall 111 of counterbore 11 is cylinder, the chamfering on the end face of rotation preventing device 3 can increase rotation preventing device
Bonding area between 3 and the side wall 111 of counterbore 11 avoids rotation preventing device 3 with respect to the loosening of the position of blade root bolt 2, Jin Erfang
The only loosening of blade root bolt 2.
In conjunction with Fig. 1 and Fig. 3, it is provided between the end of thread 21 and screw cap end 22 of blade root bolt 2 coaxial with screw cap end 22
Plectane 23, the face area of screw cap end 22 are less than the face area of plectane 23.It the end face of plectane 23 can be fixed for the welding of rotation preventing device 3
Position, the welding convenient for rotation preventing device 3 are gone on smoothly.
In conjunction with Fig. 2 and Fig. 3, the difference of the distance between two parallel sides of the diameter D of plectane 23 and screw cap end 22 d can be
0~3mm.Plectane 23 can preferably support rotation preventing device 3 at this time, and the structure between obtained rotation preventing device 3 and counterbore 11 is also more steady
It is fixed.
Illustratively, the ratio between the thickness B of plectane 23 and the height H of screw cap end 22 are 2:1~1:1.At this point, screw cap end 22 with
The size in the gap between counterbore 11 is relatively reasonable, the filler material filled in the clearance between screw cap end 22 and counterbore 11
It is more, falling off for blade root bolt 2 can be placed relatively stablely.
Illustratively, plectane 23 can be 0~3mm close to an end face of screw cap end 22 and the minimum range L of rotation preventing device 3.
The plectane 23 on the head of blade root bolt 2 can be 0~3mm close to an end face of screw cap end 22 and the minimum range L of rotation preventing device 3.
Welding between the rotation preventing device 3 obtained at this time and counterbore 11 is more firm.
Wherein, rotation preventing device 3 can be 2 or 3.The position of blade root bolt 2 can be effectively fixed by rotation preventing device 3 at this time,
Excessive cost will not be consumed.It is 2 rotation preventing devices 3 shown in Fig. 1.
Further, 2 or 3 rotation preventing devices 3 can angularly be welded on the side wall of counterbore 11 along the circumferential direction of screw cap end 22
On 111.This set will not influence the normal use of blade root bolt 2 convenient for connection.
It can be welded between the surface of two end faces and rotation preventing device 3 and the side wall 111 of counterbore 11 to rotation preventing device 3
It connects, rotation preventing device 3 can be effectively welded on counterbore 11 at this time, avoid the rotation of blade root bolt 2.
Wherein, the material of filler material 4 can be epoxy resin.One side epoxy resin can effectively play sealing blade root bolt 2
Head, gap between counterbore 11 and rotation preventing device 3 effect, another aspect epoxy resin also has certain hardness and viscosity,
Also bear certain vibration while can connecting rotation preventing device 3 with counterbore 11, reduce the rotation preventing device 3 that is located in epoxy resin by
The vibration arrived avoids the connection between rotation preventing device 3 and counterbore 11 from being destroyed.
Annular groove 112 can be offered on the side wall 111 of counterbore 11.Filler material 4, filler material 4 are placed into counterbore 11
By the clearance seal between the head of rotation preventing device 3, counterbore 11 and blade root bolt 2.The annular groove opened up on 11 side wall 111 of counterbore
112, which can also be filled material 4, is filled.
The annular groove 112 opened up on the side wall 111 of counterbore 11 can also be filled by epoxy resin, increased rotation preventing device 3 and sunk
Connection area between hole 11.The axis of annular groove is overlapped with the axis of plectane 23.Annular groove is convenient for making, and joint face
Product is also larger.
Optionally, fixed structure further includes locking plate 5, and locking plate 5 is covered on counterbore 11, and locking plate 5 is fixed on blade 1
On, the axis of the vertical screw cap end 22 of the plate face of locking plate 5.Locking plate 5 can avoid cured epoxy resin and be damaged and guarantee
The stability of epoxy inner structure guarantees that stablizing for tuning for Controllable Pitch Propeller uses.
Locking plate 5 can be connect by bolt with blade 1, and the present invention is without limitation.
Fig. 4 is a kind of installation method flow chart of the fixed structure of tuning for Controllable Pitch Propeller provided in an embodiment of the present invention, such as Fig. 4 institute
Show, method includes:
S101: the fixed structure of foregoing tuning for Controllable Pitch Propeller is provided.
S102: the blade root in fixed structure is bolted to the blade and crank disc of tuning for Controllable Pitch Propeller, the end of thread of blade root bolt
For being threadedly engaged with crank disc, the screw cap end of blade root bolt is arranged in the counterbore of blade, and screw cap end is hexagon.
S103: card sets rotation preventing device in fixed structure between screw cap end and the side wall of counterbore, rotation preventing device and screw cap end
One side offsets.
S104: the side wall of welding rotation preventing device and counterbore.
S105: the filler material into the gap filling fixed structure between the screw cap end of rotation preventing device, counterbore and blade root bolt,
By the clearance seal between the screw cap end of counterbore and blade root bolt.
When connecting the crank disc and blade of tuning for Controllable Pitch Propeller using fixed structure, the end of thread of blade root bolt is connect with crank disc,
The screw cap end of blade root bolt is located in the counterbore on blade, and screw cap end is hexagon.In the side of screw cap end and the side of counterbore
One rotation preventing device to offset with nut end side surface is set between wall, and the side wall of rotation preventing device and counterbore is fixed, it thus can be to leaf
The position of root bolt is fixed.And then between blade root bolt and counterbore filler material is set, by rotation preventing device, blade root bolt and
Gap filling between counterbore.Rotation preventing device is located in counterbore when this set, and filler material can play rotation preventing device being sealed in counterbore
Interior effect avoids the welded connecting between rotation preventing device and counterbore from being destroyed, and effectively prevent the loosening of blade root bolt.And it uses
The side wall of the method for welding fixed rotation preventing device and counterbore is also easy to realize the connection between rotation preventing device and the side wall of counterbore, production
Cost is relatively low with occupied space.Also rotation preventing device can be fixed on counterbore more stablely, guarantees that rotation preventing device limits blade root
The effect of bolt rotation.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of fixed structure of tuning for Controllable Pitch Propeller, which is characterized in that the fixed structure is suitable for connecting the blade of the tuning for Controllable Pitch Propeller
(1) and crank disc, the fixed structure include blade root bolt (2), rotation preventing device (3) and filler material (4), the blade root bolt (2)
The end of thread (21) be used for and the crank disc is threadedly engaged, the screw cap end (21) of the blade root bolt (2) is arranged in the paddle
In the counterbore (11) of leaf (1), the screw cap end (21) is hexagon,
The rotation preventing device (3) is fastened between the screw cap end (21) and the side wall (111) of the counterbore (11), the rotation preventing device
(3) it offsets with a side of the screw cap end (21), the rotation preventing device (3) is each attached to the side wall of the counterbore (11)
(111) it on, is filled in the gap between the head of the rotation preventing device (3), the counterbore (11) and the blade root bolt (2)
The filler material (4).
2. the fixed structure of tuning for Controllable Pitch Propeller according to claim 1, which is characterized in that the rotation preventing device (3) includes cylinder master
Body (31) and setting are in the hemisphere (32) at the cylinder body (31) both ends, and the centre of sphere of the hemisphere (32) is in the cylinder
On the axis of main body (31), the side wall (111) of the cylinder body (31) offsets with a side of the screw cap end (21), institute
State the end face of the axis of rotation preventing device (3) screw cap end (21) in parallel.
3. the fixed structure of tuning for Controllable Pitch Propeller according to claim 2, which is characterized in that the screw cap end of the blade root bolt (2)
(21) plectane (23) coaxial with the screw cap end (21), the end face of the screw cap end (21) are provided between the end of thread (21)
Area is less than the face area of the plectane (23).
4. the fixed structure of tuning for Controllable Pitch Propeller according to claim 3, which is characterized in that the plectane (23) is close to the nut
The minimum range of an end face and the rotation preventing device (3) for holding (21) is 0~3mm.
5. the fixed structure of tuning for Controllable Pitch Propeller according to claim 3, which is characterized in that the diameter (D) of the plectane (23) with
The difference of the distance between two parallel sides of the screw cap end (21) (d) is 0~3mm.
6. the fixed structure of tuning for Controllable Pitch Propeller according to claim 3, which is characterized in that the thickness (B) of the plectane (23) with
The ratio between height (H) of the screw cap end (21) is 2:1~1:1.
7. the fixed structure of described in any item tuning for Controllable Pitch Propeller according to claim 1~6, which is characterized in that the filler material (4)
Material is epoxy resin.
8. the fixed structure of tuning for Controllable Pitch Propeller according to claim 7, which is characterized in that the side wall (111) of the counterbore (11)
On offer annular groove (112), the axis of the annular groove (112) is overlapped with the axis of the screw cap end (21).
9. the fixed structure of tuning for Controllable Pitch Propeller according to claim 8, which is characterized in that the fixed structure further includes locking plate
(5), the locking plate (5) is covered on the counterbore (11), and the locking plate (5) is fixed on the blade (1), described anti-
The axis of the vertical screw cap end (21) of the plate face of deals (5).
10. a kind of installation method of the fixed structure of tuning for Controllable Pitch Propeller, which is characterized in that the described method includes:
The fixed structure of tuning for Controllable Pitch Propeller as described in claim 1 is provided；
Blade root in the fixed structure is bolted to the blade and crank disc of the tuning for Controllable Pitch Propeller, the screw thread of the blade root bolt
End with the crank disc for being threadedly engaged, and the screw cap end of the blade root bolt is arranged in the counterbore of the blade, the spiral shell
Cap end is hexagon；
Card sets the rotation preventing device in the fixed structure, the rotation preventing device and institute between the screw cap end and the side wall of the counterbore
A side for stating screw cap end offsets；
Weld the side wall of the rotation preventing device Yu the counterbore；
Into fixed structure described in the gap filling between the screw cap end of the rotation preventing device, the counterbore and the blade root bolt
Filler material, by the clearance seal between the screw cap end of the counterbore and the blade root bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910095588.6A CN109927868B (en) | 2019-01-31 | 2019-01-31 | Fixed knot of controllable pitch oar constructs |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910095588.6A CN109927868B (en) | 2019-01-31 | 2019-01-31 | Fixed knot of controllable pitch oar constructs |
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| CN109927868A true CN109927868A (en) | 2019-06-25 |
| CN109927868B CN109927868B (en) | 2021-08-10 |
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