CN209157557U - A kind of blade angle regulating device of propeller - Google Patents
A kind of blade angle regulating device of propeller Download PDFInfo
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- CN209157557U CN209157557U CN201821774935.5U CN201821774935U CN209157557U CN 209157557 U CN209157557 U CN 209157557U CN 201821774935 U CN201821774935 U CN 201821774935U CN 209157557 U CN209157557 U CN 209157557U
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- hydraulic cylinder
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- blade angle
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Abstract
The utility model discloses a kind of blade angle regulating devices of propeller, it is related to technical field of ships, its key points of the technical solution are that: including pedestal, pedestal upper surface is provided with mounting base, the positioning column for installing for propeller is provided in mounting base, positioning column is connected with fastening nut away from the threaded one end of mounting base, and fastening nut is for pushing against propeller in mounting base；Support frame is additionally provided on pedestal, first hydraulic cylinder is provided on support frame, second hydraulic cylinder is provided on pedestal, the first hydraulic cylinder piston rod stretches out the upper surface for squeezing blade, the second hydraulic cylinder piston rod stretches out the lower surface for squeezing blade, and the point that first hydraulic cylinder contacts on blade with second hydraulic cylinder is arranged in a staggered manner.First hydraulic cylinder and second hydraulic cylinder are set, when the piston rod of first hydraulic cylinder and second hydraulic cylinder stretches out, torsion is formed, so that blade angle is adjusted, to meet blade angle required for actual production.
Description
Technical field
The utility model relates to technical field of ships, more specifically, it relates to which a kind of blade angle of propeller adjusts dress
It sets.
Background technique
Marine propeller refers to be rotated in water by blade, converts engine rotation power in the device of propulsive force, can
There are two or more blade be connected with hub, blade for helicoid or is similar to a kind of propeller of helicoid on one side backward.
Blade angle, the also known as torsional angle of blade, refer to the angle between propeller string and propeller Plane of rotation, it with radius change and
Variation, changing rule are to influence the most important factor of paddle working performance.
Propeller will appear the case where blade angular displacement often in actual production, it is necessary to carry out to the blade angle of propeller
Adjustment, it is existing usually propeller is fixed on the support after by weight percussion so that blade angle gradually changes, to reach
The effect of adjustment blade angle needs to make its angle change by each percussion, speed compares on the whole in this way
Slowly, low efficiency has much room for improvement.
Utility model content
In view of the deficienciess of the prior art, the utility model provides a kind of blade angle regulating device of propeller, tool
Having the advantages that blade angle to regulate the speed, fast, regulated efficiency is high.
To achieve the above object, the utility model provides following technical solution:
A kind of blade angle regulating device of propeller, including pedestal, pedestal upper surface are provided with mounting base, set in mounting base
It is equipped with the positioning column for installing for propeller, positioning column is connected with fastening nut away from the threaded one end of mounting base, fastens spiral shell
Mother is for pushing against propeller in mounting base；It is additionally provided with support frame on pedestal, first hydraulic cylinder, pedestal are provided on support frame
On be provided with second hydraulic cylinder, the first hydraulic cylinder piston rod stretches out the upper surface for squeezing blade, and described second is hydraulic
Cylinder piston rod stretches out the lower surface for squeezing blade, and the point that first hydraulic cylinder contacts on blade with second hydraulic cylinder, which is staggered, to be set
It sets, the first hydraulic cylinder is with second hydraulic cylinder for being adjusted to blade angle.
Through the above technical solutions, setting first hydraulic cylinder and second hydraulic cylinder, propeller is installed in mounting base simultaneously
After being locked by fastening nut, the upper surface for squeezing blade is stretched out by first hydraulic cylinder piston rod, second hydraulic cylinder is living
Stopper rod stretches out the lower surface for squeezing same blade, and the point that first hydraulic cylinder contacts on blade with second hydraulic cylinder is arranged in a staggered manner,
When the piston rod of first hydraulic cylinder and second hydraulic cylinder stretches out, torsion is formed, so that blade angle is adjusted, to meet
Blade angle required for actual production.
Further, sliding is connected with slip base on support frame as described above, and the slip base slides in the horizontal direction, and described the
One hydraulic cylinder is fixedly connected on slip base, and first hydraulic cylinder is connected by support base and support frame sliding.
Through the above technical solutions, setting slip base, slip base and support frame sliding connect, it can by the sliding of slip base
It is adjusted with the position to first hydraulic cylinder, so that the position that first hydraulic cylinder contacts at blade upper surface can adjust
Section, so that present apparatus machine can be used for turning down blade angle, can also be used to tune up blade angle, so that device
Function is more powerful.
Further, support frame as described above slides be connected on pedestal in the horizontal direction, and the glide direction of support frame is vertical
It is arranged in the glide direction of slip base.
Through the above technical solutions, support frame can slide relative to pedestal, when propeller needs to rotate replacement adjustment
When blade, support frame can be slid towards the direction far from propeller, after blade position is adjusted in rotation, support frame is slid back
Come, so that blade replaces enhanced convenience.Meanwhile the sliding setting of support frame is but also first hydraulic cylinder contradicts paddle
The adjustable range of the position of leaf is bigger, first hydraulic cylinder using more flexible.
Further, support frame as described above is provided with sliding item along the two sidewalls of slip base glide direction, slides item edge
Slip base glide direction extend；Be provided at least two roller groups on the slip base, roller group along slip base cunning
Directional spreding is moved, each roller group includes two runners being correspondingly arranged on two sliding items, and the wheel face of runner is corresponding to be pushed against
In the upper surface of sliding item for driving slip base mobile, the runner is provided with baffle ring, baffle ring away from one end of support frame
It is contacted on sliding item towards one end of support frame.
Through the above technical solutions, setting roller group, the sliding of slip base is driven by the rolling of roller group, so that sliding
The movement of seat is more convenient, baffle ring is in addition arranged, baffle ring contacts at the end face that sliding item deviates from support frame, so that slip base is not easy
It is detached from from support frame, so that the sliding of slip base is more stable.
Further, the second hydraulic cylinder court is obliquely installed along the glide direction of slip base, the second hydraulic cylinder
Angle between vertical plane is less than or equal to 15 ° of settings.
Through the above technical solutions, second hydraulic cylinder is obliquely installed, when second hydraulic cylinder contacts at the lower end surface of blade,
So that the piston rod of second hydraulic cylinder and the angle of blade be closer to 90 °, so that the piston rod of second hydraulic cylinder contradicts
In being not easy to slip on blade lower end surface, blade angle adjustment is more stable.
Further, it is also arranged with cushion block on the positioning column, cushion block is set in mounting base.
Through the above technical solutions, setting cushion block, cushion block can select corresponding pad according to the height of propeller with dismounting and change
The thickness of block, to reach device effect wider array of for the specification of the propeller of adjustment.
Further, be provided at least two connecting rods on the side wall of the cushion block, the connecting rod along positioning column axis
It is uniformly distributed in circumferential.
Through the above technical solutions, setting connecting rod, when needing to replace cushion block, by operator link come to cushion block
It is replaced, so that the replacement enhanced convenience of cushion block.
Further, the positioning column is provided with shackle, ruler of the shackle along positioning column radial direction on the end face of mounting base
The very little diameter less than positioning column is arranged.
Through the above technical solutions, setting shackle can be by the card of driving when needing to be adjusted mounting base position
Hook hooks shackle to move to mounting base and positioning column, so that the position adjustment of mounting base is more convenient.
Further, the pedestal upper surface is also vertically arranged with sliding rail, and sliding rail is provided with branch on the end face of pedestal
Support part, and scale is provided on sliding rail；Sliding is connected with sliding block on sliding rail, and horizontally disposed graduated scale is fixed on sliding block.
Through the above technical solutions, before blade angle is adjusted, can be measured by graduated scale on blade wherein
Coordinate value.Measurement point before is measured again by graduated scale in the case where support portion position is constant, after determining it
Coordinate value, the parameter for passing through two coordinate values calculates the angle of adjustment.
Further, be also placed with non-slip mat on the side of blade upper surface, the L-shaped setting of non-slip mat, non-slip mat it is upper
End face is additionally provided with the raised line of strip.
Through the above technical solutions, setting non-slip mat, the piston rod of first hydraulic cylinder are contacted on blade by non-slip mat,
The raised line of non-slip mat can be further reduced the case where first hydraulic cylinder piston rod is detached from from non-slip mat, so that the first liquid
It is more stable when compression bar extruding blade, be conducive to the adjustment to blade angle.
Compared with prior art, the utility model has the beneficial effects that
(1) it is contacted on blade by setting first hydraulic cylinder and second hydraulic cylinder, first hydraulic cylinder and second hydraulic cylinder
Point be arranged in a staggered manner, when the piston rod of first hydraulic cylinder and second hydraulic cylinder stretch out when, formed torsion so that blade angle into
Row adjustment, to meet blade angle required for actual production；
(2) by setting slip base, so that the position that first hydraulic cylinder contacts at blade upper surface is adjustable, to make
Obtaining present apparatus machine can be used for turning down blade angle, can also be used to tune up blade angle, so that the function of device is more
It is powerful；
(3) can slide relative to pedestal by support frame, it, can be with when propeller needs to rotate the blade that replacement adjusts
Support frame is slid towards the direction far from propeller, after blade position is adjusted in rotation, back by support frame sliding, in turn
So that blade replaces enhanced convenience.Meanwhile the sliding setting of support frame is but also first hydraulic cylinder contradicts the position of blade
Adjustable range is bigger, first hydraulic cylinder using more flexible.
Detailed description of the invention
Fig. 1 is the overall schematic of embodiment, for showing whole structure；
Fig. 2 is the portion A enlarged diagram in Fig. 1；
Fig. 3 is the overall schematic of embodiment, for showing the situation of first hydraulic cylinder and second hydraulic cylinder.
Appended drawing reference: 1, pedestal；2, mounting base；3, positioning column；4, cushion block；5, connecting rod；6, fastening nut；7, shackle；8,
Support frame；9, slip base；10, item is slid；11, roller group；111, runner；12, baffle ring；13, first hydraulic cylinder；14, the second liquid
Cylinder pressure；15, non-slip mat；16, raised line；17, sliding rail；18, support portion；19, sliding block；20, graduated scale；21, slip hole.
Specific embodiment
With reference to the accompanying drawings and examples, the utility model is described in detail.
Embodiment:
A kind of blade angle regulating device of propeller, as shown in Figure 1, including pedestal 1, ground is made into cuboid setting, pedestal 1
Upper surface on be provided with mounting base 2, mounting base 2 is placed on pedestal 1.The setting in disk form of mounting base 2, mounting base 2 it is upper
Positioning column 3 is coaxially fixed on end face.Cushion block 4 is also arranged on positioning column 3, cushion block 4 is arranged in circular ring shape and is set to installation
On seat 2.At least two connecting rods 5 are provided on the side wall of cushion block 4, connecting rod 5 is uniformly distributed along the axis of positioning column 3 in circumferential.
Positioning column 3 is connected with fastening nut 6 away from the threaded one end of mounting base 2, and fastening nut 6 is for pushing against propeller in mounting base 2
On.Positioning column 3 is further fixed on shackle 7(referring to Fig. 3 on the end face of mounting base 2), shackle 7(is referring to Fig. 3) along 3 diameter of positioning column
To size be less than the diameter of positioning column 3 and be arranged, shackle 7(is referring to Fig. 3) can be used for hooking for the hook of driving to peace
Dress seat 2 and positioning column 3 are moved.
It, will first according to the height of the size selection cushion block 4 of propeller when propeller needs to be installed in mounting base 2
After corresponding cushion block 4 is inserted in positioning column 3, then the through-hole alignment positioning column 3 on propeller is inserted into, then twists fastening nut 6
Enter and is pressed on propeller.
As shown in Figure 1, support frame 8 is additionally provided on pedestal 1, the C-shaped setting of support frame 8, and support frame 8 is in the horizontal direction
Sliding is connected on pedestal 1.Sliding is connected with slip base 9 on support frame 8, and slip base 9 slides in the horizontal direction, and slip base 9
Glide direction perpendicular to support frame 8 glide direction be arranged.Support frame 8 is all provided with along the two sidewalls of 9 glide direction of slip base
It is equipped with sliding item 10, and slides item 10 and extends along the glide direction of slip base 9.
As shown in Figure 1 and Figure 2,9 upper surface of slip base contacts at support frame 8 and is arranged towards the end face of pedestal 1, on slip base 9
At least two roller groups 11 are additionally provided with, multiple roller groups 11 are distributed along the glide direction of slip base 9.Each roller group 11 is
Including two to the runner 111 being set on two sliding items 10, the wheel face of runner 111 is pushed against in the upper end of sliding item 10
Face.Runner 111 and slip base 9 are rotatablely connected, and the axis of runner 111 is arranged in horizontal direction, and the axis of runner 111 hangs down
Directly it is arranged in the glide direction of slip base 9.Each runner 111 is provided with baffle ring 12,12 court of baffle ring away from one end of support frame 8
Sliding item 10 is contacted on the end face of support frame 8 to one end of support frame 8.When slip base 9 slides along support frame 8,
Runner 111 reduces the case where slip base 9 is detached from support frame 8 for driving slip base 9 to slide.
As shown in figure 3, the upper surface of support frame 8 offers slip hole 21, slip hole 21 is square setting.On slip base 9
It is fixedly connected with first hydraulic cylinder 13, first hydraulic cylinder 13 is arranged along the vertical direction, when slip base 9 slides along support frame 8,
First hydraulic cylinder 13 is located at sliding in slip hole 21.And first hydraulic cylinder 13 is connected on support frame 8 by the sliding of slip base 9.
Second hydraulic cylinder 14 is provided on pedestal 1, second hydraulic cylinder 14 is inclined to set, and the inclined direction of second hydraulic cylinder 14 is along cunning
The glide direction setting of seat 9 is moved, and 14 blade of second hydraulic cylinder is located at one end inclination of low spot, so that the work of second hydraulic cylinder 14
Stopper rod contacts at more stable on blade lower end surface.Angle between second hydraulic cylinder 14 and vertical plane is less than or equal to 15 ° of settings,
Angle in embodiment between second hydraulic cylinder 14 and vertical plane is 10 °.
When needing to be adjusted blade angle, 13 piston rod of first hydraulic cylinder stretches out the upper surface for squeezing blade,
14 piston rod of second hydraulic cylinder stretches out the lower surface for squeezing blade, and first hydraulic cylinder 13 and second hydraulic cylinder 14 contradict blade
Point be arranged in a staggered manner to form twisting resistance, to be adjusted to blade angle, so that blade angle becomes smaller.
As shown in Fig. 2, non-slip mat 15 is also placed on the side of blade upper surface, and the L-shaped setting of non-slip mat 15, non-slip mat
15 upper surface is additionally provided with the raised line 16 of strip, and raised line 16 extends along the length direction of non-slip mat 15.When first hydraulic
When the piston rod of cylinder 13 is used to apply thrust to blade, by pushing against in being carried out in non-slip mat 15, the raised line 16 in non-slip mat 15
The case where piston rod of first hydraulic cylinder 13 is slipped from blade can be further reduced.
As shown in Figure 1, Figure 3,1 upper surface of pedestal is additionally provided with sliding rail 17, and sliding rail 17 is in being vertically arranged, and sliding rail 17 is the bottom of close to
It is provided with support portion 18 on the end face of seat 1, and is provided with scale on sliding rail 17.Sliding is connected with sliding block 19, sliding block on sliding rail 17
Horizontally disposed graduated scale 20 is fixed on 19.Before blade angle is adjusted, can by graduated scale 20 measure blade on its
In any coordinate value.Measurement point before is surveyed again by graduated scale 20 in the case where 18 position of support portion is constant
Amount, determines the coordinate value after it, and the angle of adjustment is calculated by the parameter of two coordinate values.
The working principle of the present embodiment is:
It, will first according to the height of the size selection cushion block 4 of propeller when needing the blade angle to propeller to be adjusted
After corresponding cushion block 4 is inserted in positioning column 3, then the through-hole alignment positioning column 3 on propeller is inserted into, then twists fastening nut 6
Enter, after blade is turned to corresponding position by rotation propeller, fastening nut 6, which is tightened, fixes propeller.
When blade angle is bigger than normal, first hydraulic cylinder 13 is adjusted to and second hydraulic cylinder by movable supporting frame 8 and slip base 9
The state that 14 projection in the horizontal plane is staggered.Then non-slip mat 15 blade is placed in be located on the upper surface of eminence one end
And it is connected to the side wall of blade, the piston rod for controlling first hydraulic cylinder 13 and second hydraulic cylinder 14 at this time stretches out, first hydraulic cylinder
13 piston rod contacts in non-slip mat 15, while the piston rod of the second hydraulic stem contradicts the lower end for being located at lower side with blade
On face, the piston rod of first hydraulic cylinder 13 and second hydraulic cylinder 14 stretches out simultaneously forms torsion to blade, thus to blade angle into
Row is adjusted so that blade angle becomes smaller.
When blade angle is less than normal, adjusts first hydraulic cylinder 13 and be located at the top that blade is located at low spot side, at this point, the first liquid
The piston rod of cylinder pressure 13 is for contacting at the upper surface that blade is located at low spot side, and the piston rod of second hydraulic cylinder 14 is for contradicting
It is located at the lower end surface of high point side in blade, first hydraulic cylinder 13 and the piston rod of second hydraulic cylinder 14 are stretched out simultaneously to paddle-shaped
At torsion, to blade angle be adjusted so that blade angle becomes larger.
The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to
Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to
Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and
Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (10)
1. a kind of blade angle regulating device of propeller, it is characterised in that: including pedestal (1), pedestal (1) upper surface is provided with peace
It fills seat (2), the positioning column (3) for installing for propeller is provided in mounting base (2), positioning column (3) is away from mounting base (2)
Threaded one end is connected with fastening nut (6), and fastening nut (6) is for pushing against propeller in mounting base (2)；On pedestal (1) also
It is provided with support frame (8), is provided on support frame (8) first hydraulic cylinder (13), pedestal is provided with second hydraulic cylinder on (1)
(14), first hydraulic cylinder (13) piston rod stretches out the upper surface for squeezing blade, second hydraulic cylinder (14) piston
Bar stretches out the lower surface for squeezing blade, and the point that first hydraulic cylinder (13) contacts on blade with second hydraulic cylinder (14) is staggered
Setting, the first hydraulic cylinder (13) is with second hydraulic cylinder (14) for being adjusted to blade angle.
2. a kind of blade angle regulating device of propeller according to claim 1, it is characterised in that: support frame as described above (8)
Upper sliding is connected with slip base (9), and the slip base (9) slides in the horizontal direction, and the first hydraulic cylinder (13) is fixedly connected
In on slip base (9), first hydraulic cylinder (13) is connected by support base and support frame (8) sliding.
3. a kind of blade angle regulating device of propeller according to claim 2, it is characterised in that: support frame as described above (8)
Sliding is connected on pedestal (1) in the horizontal direction, and the glide direction of support frame (8) is perpendicular to the glide direction of slip base (9)
Setting.
4. a kind of blade angle regulating device of propeller according to claim 2 or 3, it is characterised in that: support frame as described above
(8) it is provided with sliding item (10) along the two sidewalls of slip base (9) glide direction, slides item (10) along slip base (9)
Glide direction extends；It is provided at least two roller groups (11) on the slip base (9), roller group (11) is along slip base (9)
Glide direction distribution, each roller group (11) include two be correspondingly arranged in two sliding item (10) on runners (111), turn
The wheel face of wheel (111) is corresponding to be pushed against in the upper surface of sliding item (10) for driving slip base (9) mobile, the runner (111)
It is provided with baffle ring (12) away from one end of support frame (8), one end of baffle ring (12) towards support frame (8) contacts at sliding item
(10) on.
5. a kind of blade angle regulating device of propeller according to claim 1, it is characterised in that: the second hydraulic cylinder
(14) towards being obliquely installed along the glide direction of slip base (9), the angle between the second hydraulic cylinder (14) and vertical plane is small
It is arranged in being equal to 15 °.
6. a kind of blade angle regulating device of propeller according to claim 1, it is characterised in that: the positioning column (3)
On be also arranged with cushion block (4), cushion block (4) is set on mounting base (2).
7. a kind of blade angle regulating device of propeller according to claim 6, it is characterised in that: the cushion block (4)
It is provided on side wall at least two connecting rods (5), the connecting rod (5) is uniformly distributed along the axis of positioning column (3) in circumferential.
8. a kind of blade angle regulating device of propeller according to claim 6 or 7, it is characterised in that: the positioning column
(3) it is provided with shackle (7) on the end face of mounting base (2), shackle (7) is less than positioning column along the size of positioning column (3) radial direction
(3) diameter setting.
9. a kind of blade angle regulating device of propeller according to claim 1, it is characterised in that: on the pedestal (1)
End face is also vertically arranged with sliding rail (17), and sliding rail (17) is provided with support portion (18) on the end face of pedestal (1), and sliding rail
(17) scale is provided on；Sliding is connected with sliding block (19) on sliding rail (17), and sliding block is fixed with horizontally disposed scale on (19)
Ruler (20).
10. a kind of blade angle regulating device of propeller according to claim 1, it is characterised in that: blade upper surface
It is also placed on side non-slip mat (15), non-slip mat (15) L-shaped setting, the upper surface of non-slip mat (15) is additionally provided with strip
Raised line (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821774935.5U CN209157557U (en) | 2018-10-31 | 2018-10-31 | A kind of blade angle regulating device of propeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821774935.5U CN209157557U (en) | 2018-10-31 | 2018-10-31 | A kind of blade angle regulating device of propeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209157557U true CN209157557U (en) | 2019-07-26 |
Family
ID=67335879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821774935.5U Active CN209157557U (en) | 2018-10-31 | 2018-10-31 | A kind of blade angle regulating device of propeller |
Country Status (1)
| Country | Link |
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| CN (1) | CN209157557U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110562479A (en) * | 2019-07-29 | 2019-12-13 | 北京中航智科技有限公司 | pneumatic performance adjusting device for paddle |
| CN110672299A (en) * | 2019-11-07 | 2020-01-10 | 中国航空工业集团公司哈尔滨空气动力研究所 | Blade angle measuring and adjusting device based on ducted tail rotor wind tunnel test |
| CN110823503A (en) * | 2019-12-02 | 2020-02-21 | 中国空气动力研究与发展中心 | Propeller blade angle protractor |
| CN111678705A (en) * | 2020-04-30 | 2020-09-18 | 中国航发南方工业有限公司 | Device for propeller sealing test and blade deflection angle adjustment test |
| CN113022881A (en) * | 2021-02-25 | 2021-06-25 | 中国人民解放军国防科技大学 | Device is repaired to propeller hub cambered surface of aircraft screw |
| CN113020077A (en) * | 2021-03-25 | 2021-06-25 | 台州市椒江永固船舶螺旋桨厂 | Propeller cleaning device |
| CN114589584A (en) * | 2022-03-23 | 2022-06-07 | 台州市椒江永固船舶螺旋桨厂 | Ship propeller grinding process |
-
2018
- 2018-10-31 CN CN201821774935.5U patent/CN209157557U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110562479A (en) * | 2019-07-29 | 2019-12-13 | 北京中航智科技有限公司 | pneumatic performance adjusting device for paddle |
| CN110672299A (en) * | 2019-11-07 | 2020-01-10 | 中国航空工业集团公司哈尔滨空气动力研究所 | Blade angle measuring and adjusting device based on ducted tail rotor wind tunnel test |
| CN110823503A (en) * | 2019-12-02 | 2020-02-21 | 中国空气动力研究与发展中心 | Propeller blade angle protractor |
| CN110823503B (en) * | 2019-12-02 | 2021-05-04 | 中国空气动力研究与发展中心 | Propeller blade angle protractor |
| CN111678705A (en) * | 2020-04-30 | 2020-09-18 | 中国航发南方工业有限公司 | Device for propeller sealing test and blade deflection angle adjustment test |
| CN113022881A (en) * | 2021-02-25 | 2021-06-25 | 中国人民解放军国防科技大学 | Device is repaired to propeller hub cambered surface of aircraft screw |
| CN113020077A (en) * | 2021-03-25 | 2021-06-25 | 台州市椒江永固船舶螺旋桨厂 | Propeller cleaning device |
| CN113020077B (en) * | 2021-03-25 | 2022-06-24 | 台州市椒江永固船舶螺旋桨厂 | Propeller cleaning device |
| CN114589584A (en) * | 2022-03-23 | 2022-06-07 | 台州市椒江永固船舶螺旋桨厂 | Ship propeller grinding process |
| CN114589584B (en) * | 2022-03-23 | 2022-12-09 | 台州市椒江永固船舶螺旋桨厂 | Ship propeller grinding process |
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