CN111059128A - Blade bolt for controllable pitch propeller - Google Patents
Blade bolt for controllable pitch propeller Download PDFInfo
- Publication number
- CN111059128A CN111059128A CN201910972994.6A CN201910972994A CN111059128A CN 111059128 A CN111059128 A CN 111059128A CN 201910972994 A CN201910972994 A CN 201910972994A CN 111059128 A CN111059128 A CN 111059128A
- Authority
- CN
- China
- Prior art keywords
- bolt
- nut
- screw
- paddle
- blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims description 13
- 230000009471 action Effects 0.000 abstract description 5
- 230000002265 prevention Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H3/00—Propeller-blade pitch changing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
- F16B37/14—Cap nuts; Nut caps or bolt caps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
- F16B39/30—Locking exclusively by special shape of the screw-thread
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
- F16B43/001—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts for sealing or insulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H3/00—Propeller-blade pitch changing
- B63H2003/004—Propeller-blade pitch changing comprising means for locking blades in position
Abstract
The invention discloses a blade bolt for a controllable pitch propeller, and belongs to the field of ships. The paddle bolt comprises a main bolt and a plurality of pushing pieces, the main bolt comprises a screw rod and a nut, a plurality of screw holes are formed in the nut, and one pushing piece is inserted into each screw hole. According to the invention, the plurality of pushing pieces are abutted against the blades, and the blades are tightly attached to the crank pin disc under the action of the pushing pieces, so that the friction force between the blades and the crank pin disc is increased, the looseness prevention is realized, and the connection and fixation of the blades and the crank pin disc are realized in a labor-saving manner.
Description
Technical Field
The invention belongs to the field of ships, and particularly relates to a blade bolt for a controllable pitch propeller.
Background
The controllable pitch propeller is an important part of a ship propulsion device, and mainly structurally comprises blades, a crank pin disc and a propeller hub, wherein the blades and the crank pin disc are connected into a whole and fixedly arranged on the propeller hub.
The paddle is connected with the crank pin disc through the paddle bolt, and the paddle bolt is screwed through external force so as to realize the connection of the paddle and the crank pin disc.
However, as the size of the controllable pitch propeller is increased, the size of the blade and the size of the crank pin plate are increased, and the size of the blade bolt is increased for stably connecting the blade and the crank pin plate. As a result, a large external force is required to screw the blade bolt, and if the external force is insufficient, the blade bolt may not be assembled in place.
Disclosure of Invention
The embodiment of the invention provides a blade bolt for a controllable pitch propeller, which can realize the connection and fixation of a blade and a crank pin disc in a labor-saving manner. The technical scheme is as follows:
the embodiment of the invention provides a paddle bolt for a controllable pitch propeller, which comprises a main bolt and a plurality of pushing pieces, wherein the main bolt comprises a screw rod and a screw cap, one end of the screw rod is fixedly connected with the screw cap, the screw cap is provided with a plurality of screw holes which are circumferentially arranged, the screw holes axially penetrate through two end faces of the screw cap along the screw rod, one pushing piece is inserted into each screw hole, and each pushing piece is in threaded fit with the corresponding screw hole.
Optionally, the screw rod includes a connecting section and a threaded section, one end of the connecting section and the threaded section are coaxially connected together, the other end of the connecting section and the nut are coaxially connected together, and a connecting thread for the crank pin disc is arranged on the outer wall of the threaded section.
Optionally, a rigid backing ring is coaxially sleeved on the screw rod, and one side surface of the rigid backing ring abuts against all the pushing pieces.
Optionally, a plurality of grooves corresponding to the pushing members one to one are formed in one side surface of the rigid backing ring, each groove is circumferentially arranged along the rigid backing ring, and each groove is arranged opposite to the corresponding pushing member.
Optionally, each of the inner circumferential walls of the grooves is provided with a locking thread, and the locking thread is matched with the corresponding pushing piece.
Optionally, the other side surface of the rigid backing ring is provided with a first sealing ring, and the first sealing ring is arranged coaxially with the rigid backing ring.
Optionally, the paddle bolt further comprises a bolt cover removably fitted over the nut.
Optionally, a positioning boss is arranged on the inner bottom surface of the bolt cover, a positioning groove is arranged on one end surface of the nut, which faces away from the screw rod, and the positioning boss is inserted into the positioning groove.
Optionally, a second sealing ring is clamped between the outer peripheral wall of the positioning boss and the inner peripheral wall of the positioning groove.
Optionally, the bolt cover and the nut are mounted together through a connecting bolt.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
when the paddle bolt provided by the embodiment of the invention is used for connecting the paddle and the crank pin disc, firstly, the paddle is placed on the crank pin disc, the main bolt penetrates through the paddle, and the screw is in threaded fit with the crank pin disc. And then screwing the main bolt to finish the pre-screwing between the main bolt and the crank pin disc. And finally, inserting a plurality of pushing pieces in screw holes of the screw cap, and screwing the pushing pieces to ensure that the bottom ends of the pushing pieces are abutted against the blades. Because the mutual action of the force between the pushing piece and the nut, the nut can drive the screw to have the trend of moving back to the direction of the crank pin disc, so that the thread of the screw is tightly attached to the thread in the crank pin disc, the friction force between the screw and the crank pin disc is increased, and the anti-loosening effect is also achieved. And under the action of the pushing piece, the paddle can be tightly attached to the crank pin disc, the friction force between the paddle and the crank pin disc is increased, and looseness prevention is further achieved. That is to say, for the major bolt of big specification in the paddle bolt, only need exert certain external force, only play the effect of screwing up in advance of paddle bolt, do not need very big external force, it is very laborsaving. And by screwing a plurality of pushing pieces with smaller specifications, the locking of the blade bolt can be realized. And the external force required for screwing the single pushing piece with smaller specification is smaller, so the labor is saved. Therefore, the paddle bolt provided by the application can be guaranteed to be assembled in place only by applying small external force in the whole assembling and disassembling process, and the effect of saving labor is achieved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic illustration of the use of a blade bolt provided by an embodiment of the present invention;
fig. 2 is a sectional view of a blade bolt for a pitch propeller according to an embodiment of the present invention.
The symbols in the drawings represent the following meanings:
1. a main bolt; 11. a screw; 111. a connecting section; 112. a threaded segment; 12. a nut; 121. a screw hole; 122. a groove; 2. pushing the piece; 3. a rigid backing ring; 31. a groove; 4. a first seal ring; 5. a bolt cover; 51. positioning the boss; 6. a second seal ring; 7. a connecting bolt; 100. a paddle bolt; 200. a crank pin disc; 300. a paddle; 400. a hub.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The embodiment of the invention provides a blade bolt for a controllable pitch propeller, and fig. 1 is a schematic use diagram of the blade bolt provided by the embodiment of the invention, and the blade bolt 100 is used for assembling a crank pin disc 200 and a blade 300. Referring to fig. 1, crankpin disc 200 is mounted on hub 400, and blades 300 are secured to crankpin disc 200 by blade bolts 100.
Fig. 2 is a cross-sectional view of a blade bolt for an adjustable pitch propeller according to an embodiment of the present invention, as shown in fig. 2, the blade bolt 100 includes a main bolt 1 and a plurality of pushing members 2, the main bolt 1 includes a screw rod 11 and a nut 12, one end of the screw rod 11 is fixedly connected to the nut 12, the nut 12 is provided with a plurality of circumferentially arranged screw holes 121, the screw holes 121 axially penetrate through two end surfaces of the nut 12 along the screw rod 11, one pushing member 2 is inserted into each screw hole 121, and each pushing member 2 is in threaded engagement with the corresponding screw hole 121.
When the paddle bolt provided by the embodiment of the invention is used for connecting the paddle and the crank pin disc, firstly, the paddle is placed on the crank pin disc, the main bolt penetrates through the paddle, and the screw is in threaded fit with the crank pin disc. And then screwing the main bolt to finish the pre-screwing between the main bolt and the crank pin disc. And finally, inserting a plurality of pushing pieces in screw holes of the screw cap, and screwing the pushing pieces to ensure that the bottom ends of the pushing pieces are abutted against the blades. Because the mutual action of the force between the pushing piece and the nut, the nut can drive the screw to have the trend of moving back to the direction of the crank pin disc, so that the thread of the screw is tightly attached to the thread in the crank pin disc, the friction force between the screw and the crank pin disc is increased, and the anti-loosening effect is also achieved. And under the action of the pushing piece, the paddle can be tightly attached to the crank pin disc, the friction force between the paddle and the crank pin disc is increased, and looseness prevention is further achieved. That is to say, for the major bolt of big specification in the paddle bolt, only need exert certain external force, only play the effect of screwing up in advance of paddle bolt, do not need very big external force, it is very laborsaving. And by screwing a plurality of pushing pieces with smaller specifications, the locking of the blade bolt can be realized. And the external force required for screwing the single pushing piece with smaller specification is smaller, so the labor is saved. Therefore, the paddle bolt provided by the application can be guaranteed to be assembled in place only by applying small external force in the whole assembling and disassembling process, and the effect of saving labor is achieved.
Optionally, the screw 11 includes a connecting section 111 and a threaded section 112, one end of the connecting section 111 and the threaded section 112 are coaxially connected together, the other end of the connecting section 111 and the nut 12 are coaxially connected together, and the outer wall of the threaded section 112 is provided with a connecting thread for the crank pin disc 200.
In the above embodiment, the connection section 111 plays a role of transmitting power to the threaded section 112, and in addition, since the connection section 111 does not need to be provided with a thread, the structural strength of the connection section 111 is increased.
Illustratively, the connecting section 111 of the screw 11 is inserted into the paddle 300, and the threaded section 112 is inserted into the crank pin disc 200.
Optionally, the screw 11 is coaxially sleeved with a rigid backing ring 3, and one side surface of the rigid backing ring 3 abuts against all the pushing members 2.
In the above embodiment, the rigid grommet 3 may increase the contact area of the ejector 2 and the blade 300, so that the blade 300 can withstand a greater ejection force without being damaged.
Optionally, a plurality of grooves 31 corresponding to the pushing members 2 one by one are provided on one side surface of the rigid backing ring 3, each groove 31 is arranged along the circumference of the rigid backing ring 3, and each groove 31 is arranged opposite to the corresponding pushing member 2.
In the above embodiment, the groove 31 functions as a guide for the ejector 2.
It will be readily appreciated that during insertion of the ejector 2, the bottom end of the ejector 2 is first inserted through the threaded hole 121 and then into the recess 31, thereby preventing the bottom end of the ejector 2 from being displaced and not vertically abutting the rigid grommet 3.
Optionally, an anti-loosening thread is disposed on the inner peripheral wall of each groove 31, and the anti-loosening thread is matched with the corresponding pushing piece 2.
In the above embodiment, the locking thread plays a role of locking the ejector 2.
It should be noted that, during the use of the pushing member 2, the pushing member 2 is affected by vibration to generate a problem of being separated from the nut 12, and the anti-loosening screw thread plays a role in limiting the axial movement of the pushing member 2, that is, plays a role in preventing loosening of the pushing member 2.
Optionally, the other side of the rigid backing ring 3 is provided with a first sealing ring 4, and the first sealing ring 4 is arranged coaxially with the rigid backing ring 3.
In the above embodiment, the first seal ring 4 prevents the lubricant in the hub 400 at the lower portion of the crankpin disc 200 from leaking to the outside of the hub 400, and prevents the seawater outside the blades 300 from entering the hub 400 device.
Illustratively, the outer wall of the nut 12 is also provided with a first sealing ring 4, the first sealing ring 4 being interposed between the screw 11 and the rigid backing ring 3, thereby further functioning as a sealing hub 400
Optionally, paddle bolt 100 further includes a bolt cover 5, and bolt cover 5 is removably received over nut 12.
In the above embodiment, the bolt cover 5 prevents the sand from entering the screw hole 121, thereby preventing the sand from affecting the mounting and dismounting of the ejector 2.
Illustratively, the bolt cover 5 is a concave structure, and the bolt cover 5 is covered on the top end of the nut 12.
Optionally, the inner bottom surface of the bolt cover 5 is provided with a positioning boss 51, one end surface of the nut 12 facing away from the screw 11 is provided with a positioning groove 122, and the positioning boss 51 is inserted into the positioning groove 122.
In the above embodiment, the positioning boss 51 and the positioning groove 122 facilitate the positioning of the bolt cover 5.
Illustratively, the positioning boss 51 is a cylindrical structural member, and the positioning groove 122 is in clearance fit with the positioning boss 51 to achieve guiding between the positioning boss 51 and the positioning groove 122.
Alternatively, the second seal ring 6 is sandwiched between the outer peripheral wall of the positioning boss 51 and the inner peripheral wall of the positioning recess 122.
In the above embodiment, the second seal ring 6 functions to seal the positioning boss 51 and the positioning groove 122, and prevents seawater from corroding the positioning boss 51 and the positioning groove 122.
Optionally, the first sealing ring 4 and the second sealing ring 6 are both O-rings.
In the above embodiments, the O-ring is convenient to arrange.
Alternatively, the bolt cover 5 and the nut 12 are mounted together by the connecting bolt 7.
In the above embodiment, the bolt connection between the bolt cover 5 and the nut 12 facilitates the attachment and detachment of the bolt cover 5 and the nut 12, and also facilitates the replacement of the ejector 2.
Illustratively, the connecting bolt 7 is arranged coaxially with the screw 11, and the connecting bolt 7 passes through the bolt cover 5 and the positioning boss 51 in sequence and then is connected with the nut 12.
Optionally, each pushing member 2 is a hexagon socket structure.
In the above embodiment, the pushing member 2 is a hexagon socket structure member, so that the pushing member 2 can be conveniently detached in a narrow space.
For example, when a plurality of pushing members 2 are required to be inserted into the screw holes 121, a tightening force may be applied to the pushing members 2 by an allen wrench.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a paddle bolt for controllable pitch oar, characterized in that, paddle bolt (100) include kingbolt (1) and a plurality of top thrust piece (2), kingbolt (1) includes screw rod (11) and nut (12), the one end of screw rod (11) with nut (12) fixed connection, be provided with a plurality of circumference on nut (12) and arrange ground screw (121), and a plurality of screw (121) are all followed screw rod (11) axial runs through two terminal surfaces of nut (12), every equal cartridge has one in screw hole (121) top thrust piece (2), every top thrust piece (2) all with correspond separately screw hole (121) screw-thread fit.
2. Blade bolt according to claim 1, characterized in that the threaded rod (11) comprises a connecting section (111) and a threaded section (112), one end of the connecting section (111) and the threaded section (112) are coaxially connected together, the other end of the connecting section (111) and the nut (12) are coaxially connected together, and the outer wall of the threaded section (112) is provided with a connecting thread for a crank pin disc (200).
3. The paddle bolt according to claim 1, characterized in that a rigid backing ring (3) is coaxially sleeved on the screw rod (11), and one side surface of the rigid backing ring (3) is abutted against all the pushing pieces (2).
4. The blade bolt according to claim 3, characterized in that a plurality of grooves (31) corresponding to the pushing pieces (2) in a one-to-one manner are arranged on one side surface of the rigid backing ring (3), the grooves (31) are circumferentially arranged along the rigid backing ring (3), and each groove (31) is arranged opposite to the corresponding pushing piece (2).
5. The blade bolt according to claim 4, characterized in that each groove (31) is provided with a locking thread on its inner circumferential wall, said locking thread matching with the corresponding ejector (2).
6. Blade bolt according to claim 3, characterized in that the other side of the rigid grommet (3) is provided with a first sealing ring (4), which first sealing ring (4) is arranged coaxially with the rigid grommet (3).
7. The paddle bolt of claim 1, wherein the paddle bolt (100) further comprises a bolt cover (5), the bolt cover (5) being removably nested outside the nut (12).
8. The paddle bolt according to claim 7, characterized in that the inner bottom surface of the bolt cover (5) is provided with a positioning boss (51), one end surface of the nut (12) facing away from the screw (11) is provided with a positioning groove (122), and the positioning boss (51) is inserted into the positioning groove (122).
9. The blade bolt according to claim 8, characterized in that a second sealing ring (6) is clamped between the outer circumferential wall of the positioning boss (51) and the inner circumferential wall of the positioning groove (122).
10. Blade bolt according to claim 8, characterised in that the bolt cover (5) and the nut (12) are mounted together by means of a connecting bolt (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910972994.6A CN111059128A (en) | 2019-10-14 | 2019-10-14 | Blade bolt for controllable pitch propeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910972994.6A CN111059128A (en) | 2019-10-14 | 2019-10-14 | Blade bolt for controllable pitch propeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111059128A true CN111059128A (en) | 2020-04-24 |
Family
ID=70297530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910972994.6A Pending CN111059128A (en) | 2019-10-14 | 2019-10-14 | Blade bolt for controllable pitch propeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111059128A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114310153A (en) * | 2021-11-11 | 2022-04-12 | 武汉船用机械有限责任公司 | Machining method of adjustable pitch propeller crank disc |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1768894A1 (en) * | 2004-07-20 | 2007-04-04 | Aimbridge Pty. Ltd. | Propeller for a marine propulsion system |
| CN201149023Y (en) * | 2008-01-23 | 2008-11-12 | 三一重型装备有限公司 | Tightened connection bolt anti-loose mechanism for coal mine working face coal winning machine |
| CN101705961A (en) * | 2009-11-23 | 2010-05-12 | 中国船舶重工集团公司第七二五研究所 | Method for connecting metal flanges with composite material transmission shaft formed by winding |
| CN102995696A (en) * | 2012-09-19 | 2013-03-27 | 三一重机有限公司 | Counterweight bolt protector |
| CN105562730A (en) * | 2014-10-16 | 2016-05-11 | 常宇菲 | Positioning accessory device in vertical lathe |
| CN105675167A (en) * | 2016-02-03 | 2016-06-15 | 昆明理工光智检测科技有限公司 | Fiber monitoring through device for oil-immersed transformer, and preparation method for fiber monitoring through device |
| CN205618516U (en) * | 2016-04-11 | 2016-10-05 | 内蒙古久和能源装备有限公司 | Lock bolt component |
| CN207377947U (en) * | 2017-08-07 | 2018-05-18 | 中国船舶重工集团公司第七0四研究所 | Uniaxial direct tensile pre-tensioned type tuning for Controllable Pitch Propeller blade trip bolt |
| CN109956017A (en) * | 2019-04-10 | 2019-07-02 | 中国船舶重工集团公司第七0四研究所 | Distance-adjusting oar blade root anti-loosening device of bolt |
-
2019
- 2019-10-14 CN CN201910972994.6A patent/CN111059128A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1768894A1 (en) * | 2004-07-20 | 2007-04-04 | Aimbridge Pty. Ltd. | Propeller for a marine propulsion system |
| CN201149023Y (en) * | 2008-01-23 | 2008-11-12 | 三一重型装备有限公司 | Tightened connection bolt anti-loose mechanism for coal mine working face coal winning machine |
| CN101705961A (en) * | 2009-11-23 | 2010-05-12 | 中国船舶重工集团公司第七二五研究所 | Method for connecting metal flanges with composite material transmission shaft formed by winding |
| CN102995696A (en) * | 2012-09-19 | 2013-03-27 | 三一重机有限公司 | Counterweight bolt protector |
| CN105562730A (en) * | 2014-10-16 | 2016-05-11 | 常宇菲 | Positioning accessory device in vertical lathe |
| CN105675167A (en) * | 2016-02-03 | 2016-06-15 | 昆明理工光智检测科技有限公司 | Fiber monitoring through device for oil-immersed transformer, and preparation method for fiber monitoring through device |
| CN205618516U (en) * | 2016-04-11 | 2016-10-05 | 内蒙古久和能源装备有限公司 | Lock bolt component |
| CN207377947U (en) * | 2017-08-07 | 2018-05-18 | 中国船舶重工集团公司第七0四研究所 | Uniaxial direct tensile pre-tensioned type tuning for Controllable Pitch Propeller blade trip bolt |
| CN109956017A (en) * | 2019-04-10 | 2019-07-02 | 中国船舶重工集团公司第七0四研究所 | Distance-adjusting oar blade root anti-loosening device of bolt |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114310153A (en) * | 2021-11-11 | 2022-04-12 | 武汉船用机械有限责任公司 | Machining method of adjustable pitch propeller crank disc |
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Application publication date: 20200424 |
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| RJ01 | Rejection of invention patent application after publication |