CN207875979U - A kind of narrow spacing lock stop device - Google Patents
A kind of narrow spacing lock stop device Download PDFInfo
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- CN207875979U CN207875979U CN201721762481.5U CN201721762481U CN207875979U CN 207875979 U CN207875979 U CN 207875979U CN 201721762481 U CN201721762481 U CN 201721762481U CN 207875979 U CN207875979 U CN 207875979U
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- locking plate
- adjustable length
- sliding block
- length rod
- narrow spacing
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Abstract
The utility model belongs to the design of propeller narrow spacing chocking construction, is related to a kind of narrow spacing lock stop device.Including Adjustable length rod (1), concentric sliding block (2), wound spring (3), pitch locking plate (4), pitch locking plate fixing screws (5), oil cylinder (6)；The utility model can both lock small elongation under certain condition, under given conditions, and can release this kind limitation.Securely and reliably, simple in structure, while the volume and weight of propeller can also be reduced to a certain extent, reduce cost.
Description
Technical field
The invention belongs to the designs of propeller narrow spacing chocking construction, are related to a kind of narrow spacing lock stop device.
Background technology
Current propeller is to realize feather by the back-and-forth motion of Adjustable length rod 1, when propeller becomes narrow spacing or anti-paddle, is become
It moving right away from bar 1, propeller will produce negative pulling force under the propeller pitch angle less than small elongation, this does not allow in the air, but
Propeller when running is slided in aircraft landing must carry out anti-paddle to generate the negative pulling force needed for braking aircraft.In existing narrow spacing stop mechanism
See that Fig. 1, paddle shell 8 form closed oil pocket with piston component 13, oil cylinder 6, pull-fork assembly 11, piston component 13 and Adjustable length rod 1 pass through
It is threadedly coupled, narrow spacing stop screw rod 12, narrow spacing locating snap ring 9 and anti-loom 10 are connected through a screw thread；Blade 7 passes through pull-fork assembly
11, feather is realized in the back-and-forth motion rotation of Adjustable length rod 1；Anti- loom 10 is evenly distributed on narrow spacing locating snap ring 9, one positions on anti-loom 10
Installation narrow spacing stop screw rod 12 is set, pull-fork assembly 11, Adjustable length rod 1 move right after certain distance, and pull-fork assembly 11 is by anti-loom
Narrow spacing stop screw rod 12 on 10 stops that airscrewpiston is fixed.At this point, to release narrow spacing stop, oil pocket oil must be increased
Pressure, piston component 13 under the action of increased lubricating oil pressure, drive Adjustable length rod 1, pull-fork assembly 11, narrow spacing stop screw rod 12,
Anti- loom 10 and narrow spacing locating snap ring 9 move right simultaneously, and narrow spacing stop is released from.The structure is by oil pressure cntrol narrow spacing stop
The position of ring 9, anti-loom 10 and narrow spacing stop screw rod 12, to limit the movement of Adjustable length rod 1.The narrow spacing chocking construction structure is multiple
Miscellaneous, anti-loom 10 must pass through paddle shell 8, cause 8 volume of paddle shell excessive, and entire propeller is not only greatly but also again.
Invention content
The purpose of the present invention：A kind of safe and reliable, simple in structure narrow spacing stop device must be designed, i.e., when Adjustable length rod to
It moves right, when blade being driven to turn to narrow spacing Angle Position, Adjustable length rod is mobile restricted, under given conditions, and can release this kind
Limitation, makes Adjustable length rod continue to move to right, and blade turns to anti-paddle position, achievees the purpose that brake aircraft.
Technical scheme of the present invention：A kind of narrow spacing locks stop device, which is characterized in that including Adjustable length rod 1, concentric sliding block 2,
Wound spring 3, pitch locking plate 4, pitch locking plate fixing screws 5, oil cylinder 6；6 end face of oil cylinder is opened there are four uniformly distributed guide groove, and four
A concentric sliding block 2 crouches in guide groove respectively, and the guiding of oil cylinder 6 is fitted in by pitch locking plate 4, pitch locking plate fixing screws 5
In slot, concentric sliding block 2 is held tightly by a wound spring 3 on 1 cylindrical surface of Adjustable length rod.
Concentric 2 bottom surface 14 of sliding block and two sides 15 are contacted with the bottom surface of 6 guide groove of oil cylinder and two sides respectively, and can edge
Guide groove radially slides, and pitch locking plate 4 is fixed on 6 end face of oil cylinder by pitch locking plate fixing screws 5, and pushes down concentric sliding block
2 pitch locking plate press-loading faces 16；Wound spring 3 is sleeved on to the concave surface 17 of four concentric sliding blocks 2,42 Adjustable length rods of concentric sliding block is made to connect
Cylindrical surface adhesive of the contacting surface 18 with Adjustable length rod 1.
Pitch locking plate 4 is loop configuration, thereon uniformly distributed 4 through-holes, to install pitch locking plate fixing screws 5, pitch lock
Pitch locking plate 4 is fixed on 6 end face of oil cylinder by piece fixing screws 5, concentric sliding block 2 is fitted in the guide groove of oil cylinder 6.
Wound spring 3 is cast structural, and wound spring 3 is sleeved on 4 concentric 2 concave surfaces 17 of sliding block, to sliding with one heart by 4
Block 2 is held tightly on 1 cylindrical surface of Adjustable length rod.
An annular groove is opened on 1 cylindrical surface of Adjustable length rod, left side wall is right angle, and right side wall is 30 degree of slopes, when concentric sliding
It when block 2 is slid into along 1 right side wall of Adjustable length rod in annular groove, is held tightly by wound spring 3, while by the left of 1 annular groove of Adjustable length rod
Wall stops.
Wound spring 3 is sleeved on 4 concentric 2 concave surfaces 17 of sliding block, and 4 concentric sliding blocks 2 are held tightly on 1 cylindrical surface of Adjustable length rod
On.
Beneficial effects of the present invention：The present invention can both lock small elongation under certain condition, under given conditions, and can
To release this kind limitation.Securely and reliably, simple in structure, while the volume and again of propeller can also be reduced to a certain extent
Amount, reduces cost.
Description of the drawings
The existing narrow spacing chocking construction schematic diagrames of Fig. 1
Wherein：1-Adjustable length rod；6-oil cylinders；7-blades；8-paddle shells；9-narrow spacing locating snap rings；10-anti-looms；11—
Pull-fork assembly；12-narrow spacing stop screw rods；13-piston components
Fig. 2 narrow spacings of the present invention lock stop device front view
Wherein：1-Adjustable length rod；2-concentric sliding blocks；3-wound springs；4-pitch locking plates；5-pitch locking plates fix spiral shell
Nail；6-oil cylinders
Fig. 3 narrow spacings of the present invention lock stop device vertical view
Fig. 4 cylinder structure schematic diagrames
Fig. 5 pitch lock plate structure schematic diagrames
The concentric slide block structure schematic diagrames of Fig. 6
Fig. 7 Adjustable length rod structural schematic diagrams
Specific implementation mode
The following further describes the present invention with reference to the drawings：
As shown in Figure 2, Figure 3, Figure 4, a kind of narrow spacing locks stop device, including Adjustable length rod 1, concentric sliding block 2, wound spring 3,
Pitch locking plate 4, pitch locking plate fixing screws 5, oil cylinder 6；6 end face of oil cylinder is opened there are four uniformly distributed guide groove, four concentric sliding blocks 2
It crouches in guide groove, and is fitted in the guide groove of oil cylinder 6 by pitch locking plate 4, pitch locking plate fixing screws 5 respectively, it is sliding with one heart
Block 2 is held tightly by a wound spring 3 on 1 cylindrical surface of Adjustable length rod.
As shown in fig. 6,2 bottom surface 14 of sliding block and two sides 15 connect with the bottom surface of 6 guide groove of oil cylinder and two sides respectively with one heart
It touching, and can be radially slided along guide groove, pitch locking plate 4 is fixed on 6 end face of oil cylinder by pitch locking plate fixing screws 5, and
Push down 2 pitch locking plate press-loading face 16 of concentric sliding block；Wound spring 3 is sleeved on to the concave surface 17 of four concentric sliding blocks 2, make 4 with one heart
Cylindrical surface adhesive of the 2 Adjustable length rod contact surface 18 of sliding block with Adjustable length rod 1.When Adjustable length rod 1 moves right, it is moved to narrow spacing stop position
When, four concentric sliding blocks 2 fall into the annular groove of 1 external cylindrical surface of Adjustable length rod, make under the spring-force driven dual of wound spring 3
Adjustable length rod 1 can not continue to move to, to which by locking of propeller, in small elongation, when rotating speed increases, concentric sliding block 2 is oriented to along oil cylinder 6
Slot radially outward slides, and 2 Adjustable length rod contact surface 18 of concentric sliding block is detached with the cylindrical surface of Adjustable length rod 1,2 stop surface 19 of concentric sliding block
When colliding with 4 inner ring surface of pitch locking plate, concentric sliding block 2 stops sliding, and narrow spacing lock is opened.2 structure of concentric sliding block utilizes spring force
Interaction with centrifugal force is locked and is opened to Adjustable length rod 1, and principle is simple, delicate structure.
As shown in figure 5, pitch locking plate 4 is loop configuration, uniformly distributed 4 through-holes, spiral shell is fixed to install pitch locking plate thereon
Nail 5, pitch locking plate 4 is fixed on 6 end face of oil cylinder by pitch locking plate fixing screws 5, and concentric sliding block 2 is fitted in leading for oil cylinder 6
Into slot, when concentric sliding block 2 is radially outward slided along guide groove, 4 inner ring surface of pitch locking plate plays backstop action simultaneously.
Wound spring 3 is cast structural, and wound spring 3 is sleeved on 4 concentric 2 faces 17 of sliding block, to by 4 concentric sliding blocks
2 hold tightly on 1 cylindrical surface of Adjustable length rod.
As shown in fig. 7, opening an annular groove on 1 cylindrical surface of Adjustable length rod, left side wall is right angle, and right side wall is 30 degree oblique
It is held tightly by wound spring 3, while by 1 ring of Adjustable length rod when concentric sliding block 2 slides into along 1 right side wall of Adjustable length rod in annular groove on slope
Connected in star left side wall stops.
Wound spring 3 is sleeved on 4 concentric 2 faces 17 of sliding block, on, 4 concentric sliding blocks 2 are held tightly on 1 cylindrical surface of Adjustable length rod,
When Adjustable length rod 1 is moved to narrow spacing stop position, four concentric sliding blocks 2 fall into Adjustable length rod under the spring-force driven dual of wound spring 3
In the annular groove of 1 external cylindrical surface, make Adjustable length rod 1 that can not continue to move to, to which, in small elongation, rotating speed increases by locking of propeller
When, the centrifugal force of concentric sliding block 2 is more than the spring force of wound spring 3, and concentric sliding block 2 overcomes spring force along 6 guide groove diameter of oil cylinder
To sliding in and out, to release narrow spacing stop.
Claims (6)
1. a kind of narrow spacing locks stop device, which is characterized in that including Adjustable length rod (1), concentric sliding block (2), wound spring (3), paddle
Away from locking plate (4), pitch locking plate fixing screws (5), oil cylinder (6)；Oil cylinder (6) end face is opened there are four uniformly distributed guide groove, and four same
Heart sliding block (2) crouches in guide groove respectively, and is fitted in oil cylinder (6) by pitch locking plate (4), pitch locking plate fixing screws (5)
In guide groove, concentric sliding block (2) is held tightly by a wound spring (3) on Adjustable length rod (1) cylindrical surface.
2. narrow spacing as described in claim 1 locks stop device, which is characterized in that concentric sliding block (2) bottom surface (14) and two sides
(15) it contacts, and can be radially slided along guide groove, pitch locking plate with the bottom surface of oil cylinder (6) guide groove and two sides respectively
(4) it is fixed on oil cylinder (6) end face by pitch locking plate fixing screws (5), and pushes down concentric sliding block (2) pitch locking plate press-loading face
(16)；Wound spring (3) is sleeved on to the concave surface (17) of four concentric sliding blocks (2), makes 4 concentric sliding block (2) Adjustable length rod contact surfaces
(18) cylindrical surface adhesive of same Adjustable length rod (1).
3. narrow spacing as described in claim 1 locks stop device, which is characterized in that pitch locking plate (4) is loop configuration, thereon
4 through-holes of cloth, to install pitch locking plate fixing screws (5), pitch locking plate (4) is fixed on by pitch locking plate fixing screws (5)
On oil cylinder (6) end face, concentric sliding block (2) is fitted in the guide groove of oil cylinder (6).
4. narrow spacing as described in claim 1 locks stop device, which is characterized in that wound spring (3) is cast structural, by cast
Spring (3) is sleeved on 4 concentric sliding block (2) concave surfaces (17), holding tightly 4 concentric sliding blocks (2) on Adjustable length rod (1) cylindrical surface
On.
5. narrow spacing as described in claim 1 locks stop device, which is characterized in that open an annular on Adjustable length rod (1) cylindrical surface
Groove, left side wall are right angle, and right side wall is 30 degree of slopes, when concentric sliding block (2) slides into annular groove along Adjustable length rod (1) right side wall
It when middle, is held tightly by wound spring (3), while stopped by Adjustable length rod (1) annular groove left side wall.
6. narrow spacing as described in claim 1 locks stop device, which is characterized in that wound spring (3) is sleeved on 4 concentric sliding blocks
(2) on concave surface (17), 4 concentric sliding blocks (2) are held tightly on Adjustable length rod (1) cylindrical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721762481.5U CN207875979U (en) | 2017-12-15 | 2017-12-15 | A kind of narrow spacing lock stop device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721762481.5U CN207875979U (en) | 2017-12-15 | 2017-12-15 | A kind of narrow spacing lock stop device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207875979U true CN207875979U (en) | 2018-09-18 |
Family
ID=63501867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721762481.5U Active CN207875979U (en) | 2017-12-15 | 2017-12-15 | A kind of narrow spacing lock stop device |
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| Country | Link |
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| CN (1) | CN207875979U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108032993A (en) * | 2017-12-15 | 2018-05-15 | 惠阳航空螺旋桨有限责任公司 | A kind of narrow spacing locks stop device |
| CN109606648A (en) * | 2018-12-12 | 2019-04-12 | 惠阳航空螺旋桨有限责任公司 | A kind of properller pitch-changing mechanism |
-
2017
- 2017-12-15 CN CN201721762481.5U patent/CN207875979U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108032993A (en) * | 2017-12-15 | 2018-05-15 | 惠阳航空螺旋桨有限责任公司 | A kind of narrow spacing locks stop device |
| CN108032993B (en) * | 2017-12-15 | 2024-04-09 | 惠阳航空螺旋桨有限责任公司 | Small-distance lock stop device |
| CN109606648A (en) * | 2018-12-12 | 2019-04-12 | 惠阳航空螺旋桨有限责任公司 | A kind of properller pitch-changing mechanism |
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