CN112278212A - Split type structure of steering oar rotation driving device - Google Patents
Split type structure of steering oar rotation driving device Download PDFInfo
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- CN112278212A CN112278212A CN202011184145.3A CN202011184145A CN112278212A CN 112278212 A CN112278212 A CN 112278212A CN 202011184145 A CN202011184145 A CN 202011184145A CN 112278212 A CN112278212 A CN 112278212A
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- output shaft
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- rotary
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
- B63H5/125—Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction, e.g. podded azimuthing thrusters
- B63H5/1252—Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction, e.g. podded azimuthing thrusters the ability to move being conferred by gearing in transmission between prime mover and propeller and the propulsion unit being other than in a "Z" configuration
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- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Power Steering Mechanism (AREA)
Abstract
A split structure of a steering oar rotation driving device comprises a driving device, an output shaft, a rotation pinion and a rotation supporting part, wherein the driving device is in transmission fit with the output shaft, the rotation pinion is in transmission fit with the output shaft through a spline, and the rotation supporting part is in transmission fit with the rotation pinion; the bottom of the output shaft is provided with a baffle plate and a torsion pin, the baffle plate is in threaded connection with the output shaft through a connecting screw, the bottom of the output shaft is provided with a pin hole, the baffle plate is provided with a through hole corresponding to the pin hole, and the torsion pin is in interference fit with the pin hole and the through hole which correspond to each other; the joint of the output shaft and the rotary pinion is provided with an annular groove, the top of the baffle is provided with an annular boss which is integrated with the baffle into a whole, and the annular groove is in transition fit with the annular boss. The design not only reduces the processing cost of the reducer shaft of the large-scale rotary driving device, but also is safe and reliable, and achieves the same effect as the steering oar rotary driving device with an integrated structure.
Description
Technical Field
The invention relates to a steering oar rotation driving device, in particular to a split type structure of the steering oar rotation driving device, which is particularly suitable for driving a steering oar propelling device to rotate.
Background
The full-rotation rudder propeller device is a propelling device which can provide thrust in any direction of 360 degrees, and the rotation of the rudder propeller device for 360 degrees is realized by driving a rotation support through the meshing of gears of a rotation driving device. A hydraulic motor or a motor arranged on the upper part of the rotary driving device drives a rotary speed reducer on the lower part of the rotary driving device to rotate, and drives a rotary pinion on the lowest part of the rotary driving device to rotate, and the pinion is meshed with an inner ring gear of the rotary supporting part, so that the rotary supporting is driven to rotate, and a propelling device arranged on the lower part of the rotary supporting is driven to realize 360-degree azimuth rotation.
The pinion gear at the lower part of the existing rotary driving device is mostly integrated with the output shaft of the rotary speed reducer, and the pinion gear integrated with the output shaft of the rotary driving device is directly meshed with the inner ring of the rotary support. However, as the steering oar propulsion device is enlarged, the power and the size of the rotary driving device are further increased, if the pinion and the output shaft of the speed reducer of the rotary driving device are of an integrated structure, in order to process the tooth surface of the pinion, a long shaft with the pinion needs a large numerical control center for processing, which causes resource waste and increased cost for processing the rotary driving device; if the pinion at the lower part of the rotary driving device and the output shaft of the rotary speed reducer adopt a split structure, the rotary driving device on the rudder propeller is stressed greatly, rotates forward and backward frequently, the load end is unbalanced, and the output shaft of the rotary driving device has a certain disturbance degree, so that the rotary driving device is easy to deform in the use process, the pinion and the output shaft of the rotary driving device are simply connected by using a spline and a screw, the safety and the reliability cannot be achieved, and the requirements of the device on use under various working conditions cannot be met.
Disclosure of Invention
The invention aims to solve the problems that the integral processing cost of the output shaft of the rotary speed reducer and the pinion is too high and the split structure of the output shaft of the rotary speed reducer and the pinion cannot meet the use requirement in the prior art, and provides the split structure of the steering oar rotary driving device, which has low processing cost and can meet the use requirement.
In order to achieve the above purpose, the technical solution of the invention is as follows: a split structure of a steering oar rotation driving device comprises a driving device, an output shaft, a rotation pinion and a rotation supporting part, wherein the driving device is in transmission fit with the output shaft;
the bottom of the output shaft is provided with a baffle plate and a torsion pin, the baffle plate is connected with the output shaft through a connecting screw, the bottom of the output shaft is provided with a pin hole, the baffle plate is provided with a through hole corresponding to the pin hole, and the torsion pin is simultaneously in interference fit with the corresponding pin hole and the through hole;
the output shaft is connected with the rotary pinion through a ring groove, the top of the baffle is provided with an annular boss which is integrated with the baffle into a whole, the inner groove wall of the ring groove is in transition fit with the inner wall of the annular boss, and the outer groove wall of the ring groove is in transition fit with the outer wall of the annular boss.
And the clearance between the inner wall of the annular boss and the inner groove wall of the annular groove is less than 0.03 mm.
And the clearance between the outer wall of the annular boss and the outer groove wall of the annular groove is less than 0.03 mm.
The upper surface of the baffle comprises an inner contact surface and an outer contact surface, the outer contact surface is located on the outer side of the annular boss, the outer contact surface is tightly matched with the bottom surface of the rotary pinion, the inner contact surface is located on the inner side of the annular boss, and the size of a gap between the inner contact surface and the bottom surface of the output shaft is 0.5 +/-0.1 mm.
Three to six pin holes are formed in the output shaft, the number of the through holes in the baffle plate is equal to that of the pin holes, the number of the torsion pins is equal to that of the pin holes, and the torsion pins are evenly distributed along the circumference.
The connecting screws penetrate through the baffle plate and then are in threaded fit with the output shaft, and the baffle plate is connected with the output shaft through a plurality of connecting screws;
the number of the connecting screws is equal to that of the torsion pins, and the connecting screws and the torsion pins are arranged at intervals.
And an inner ring of the rotary supporting part is provided with an inner gear, and the inner gear is meshed with the rotary pinion.
The bottom of the baffle is provided with a locking punched hole along the periphery of the through hole.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the steering oar rotation driving device, the rotation pinion and the output shaft are of the split structure, the pinion and the output shaft can be processed respectively, a large numerical control center is not needed, and the production cost of the rotation driving device is reduced. Therefore, the pinion and the output shaft of the design are of a split structure, the processing is easy, and the production cost of the rotary driving device is reduced.
2. The connecting part of the output shaft and the rotary pinion in the split type structure of the steering oar rotary driving device is provided with the annular groove, the top of the baffle is provided with the annular boss which is integrated with the baffle, and the annular groove and the annular boss are in transition fit, so that the bending moment born by the pinion is completely transmitted to the output shaft through the annular boss on the baffle and cannot be transmitted to the connecting screw; the bottom of the output shaft is provided with a pin hole, the baffle plate is provided with a through hole corresponding to the pin hole, and the torsion pin is simultaneously in interference fit with the pin hole and the through hole, so that the torsion generated by the clearance of the spline when the rotary driving device rotates forwards and backwards is born by the torsion pin and is not born by the connecting screw; the connecting screw only bears the tension in the vertical direction, does not bear the force in other directions, is not easy to lose efficacy, is safe and reliable in structure, and enables the split structure of the steering oar rotation driving device to achieve the same effect as the integrated structure. Therefore, the connecting screw for connecting the output shaft and the baffle in the design only bears the tension in the vertical direction, but does not bear the force in other directions, the connecting screw is not easy to lose efficacy, the structure is safe and reliable, and the split structure of the steering oar rotation driving device achieves the same effect as the integrated structure.
3. According to the steering oar rotation driving device, the gap of 0.5 +/-0.1 mm is formed between the inner contact surface and the bottom of the output shaft in the split structure, the situation that the outer contact surface and the bottom of the rotation pinion cannot be compressed due to the fact that the bottom of the rotating shaft or the top surface of the baffle is not smooth enough is avoided, the baffle and the rotation pinion can be axially positioned through the pretightening force of the connecting screw, the rotation pinion is prevented from axially sliding, and therefore the split structure of the steering oar rotation driving device can achieve the same effect as an integrated structure. Therefore, the pretightening force of the connecting screw can compress the baffle and the rotary pinion in the design, so that the split structure of the steering oar rotary driving device can achieve the same effect as the integrated structure.
4. According to the split structure of the steering oar rotation driving device, the anti-loosening punched holes are formed in the bottom of the baffle along the periphery of the through hole, so that the torsion pin can be prevented from sliding out of the pin hole, and the torsion pin is prevented from losing efficacy. Therefore, the anti-loosening sample at the bottom of the baffle in the design is punched, so that the failure of the torsion pin can be avoided, and the structure is safer and more reliable.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of a connection structure of the output shaft and the swing pinion in fig. 1.
Fig. 3 is a partially enlarged view of a portion a in fig. 2.
Fig. 4 is a schematic structural view of the baffle plate of fig. 1.
Fig. 5 is a general block diagram of the present design.
Fig. 6 is a schematic view of a lock-like punch.
Figure 7 is a simplified schematic of the deflection of the output shaft of the rudder propeller slewing drive.
Fig. 8 is a schematic diagram of the force applied to the steering oar slewing drive device.
In the figure: the device comprises a driving device 1, an output shaft 2, a pin hole 21, a rotary pinion 3, a rotary supporting part 4, an internal gear 41, a baffle plate 5, a through hole 51, an annular boss 52, an internal contact surface 53, an external contact surface 54, a loose-proof punched hole 55, a torsion pin 6, a connecting screw 7, an annular groove 8, an inner groove wall 81 and an outer groove wall 82.
Detailed Description
The present invention will be described in further detail with reference to the following description and embodiments in conjunction with the accompanying drawings.
Referring to fig. 1 to 8, a split structure of a steering oar rotation driving device includes a driving device 1, an output shaft 2, a rotation pinion 3 and a rotation supporting portion 4, wherein the driving device 1 is in transmission fit with the output shaft 2, the rotation pinion 3 is sleeved on the output shaft 2, the rotation pinion 3 is in transmission fit with the output shaft 2 through a spline, and the rotation supporting portion 4 is in transmission fit with the rotation pinion 3;
the bottom of the output shaft 2 is provided with a baffle plate 5 and a torsion pin 6, the baffle plate 5 is connected with the output shaft 2 through a connecting screw 7, the bottom of the output shaft 2 is provided with a pin hole 21, the baffle plate 5 is provided with a through hole 51 corresponding to the pin hole 21, and the torsion pin 6 is simultaneously in interference fit with the corresponding pin hole 21 and the through hole 51;
the joint of the output shaft 2 and the rotary pinion 3 is provided with an annular groove 8, the top of the baffle 5 is provided with an annular boss 52 which is integrated with the baffle 5, the inner groove wall 81 of the annular groove 8 is in transition fit with the inner wall of the annular boss 52, and the outer groove wall 82 of the annular groove 8 is in transition fit with the outer wall of the annular boss 52.
The clearance between the inner wall of the annular boss 52 and the inner groove wall 81 of the annular groove 8 is less than 0.03 mm.
The clearance between the outer wall of the annular boss 52 and the outer groove wall 82 of the annular groove 8 is less than 0.03 mm.
The upper surface of the baffle 5 comprises an inner contact surface 53 and an outer contact surface 54, the inner contact surface 53 is positioned on the inner side of the annular boss 52, the outer contact surface 54 is positioned on the outer side of the annular boss 52, the outer contact surface 54 is tightly matched with the bottom surface of the rotary pinion 3, and the size of a gap between the inner contact surface 53 and the bottom surface of the output shaft 2 is 0.5 +/-0.1 mm.
Three to six pin holes 21 are formed in the output shaft 2, the number of the through holes 51 in the baffle 5 is equal to that of the pin holes 21, the number of the torsion pins 6 is equal to that of the pin holes 21, and the torsion pins 6 are uniformly distributed along the circumference.
The connecting screw 7 penetrates through the baffle 5 and then is in threaded fit with the output shaft 7, and the baffle 5 is connected with the output shaft 2 through a plurality of connecting screws 7;
the number of the connecting screws 7 is equal to that of the torsion pins 6, and the connecting screws 7 and the torsion pins 6 are arranged at intervals.
The inner ring of the slewing support 4 is provided with an internal gear 41, and the internal gear 41 is meshed with the slewing pinion 3.
The bottom of the baffle 5 is provided with a loose-proof punched hole 55 along the periphery of the through hole 51.
The principle of the invention is illustrated as follows:
along with the increase of the steering oar propelling device, the power and the size of the rotary speed reducer can be further increased, a larger rotary driving device is used on a steering oar with larger power, a split structure of a rotary pinion and an output shaft of the rotary driving device is needed to reduce the manufacturing cost of the rotary driving device, and meanwhile, the safety and the reliability of the rotary driving device with the split structure are also guaranteed.
As shown in fig. 7 and 8, in the split structure of the rudder propeller rotation driving device, because the rotation driving device on the rudder propeller is stressed greatly, the rudder propeller rotates forward and backward frequently, the load end is unbalanced, and the output shaft of the rotation driving device has a certain deflection, the output shaft 2 will generate a certain deformation, and because the output shaft 2 has deflection and the tooth surface of the gear is not completely vertical, the rotation pinion 3 will bear a component force downward along the axial direction when rotating; when the output shaft 2 drives the rotary pinion 3 to start rotating, the rotary pinion 3 can be subjected to radial reaction force, and under the comprehensive action of the component force downward along the axial direction and the radial reaction force, the rotary pinion 3 can generate bending moment, because the spline has a gap, the bending moment can not be completely transmitted to the output shaft 2 from the rotary pinion 3 through the spline, and if the bending moment acts on the baffle plate and is born by the connecting screw 7, the connecting screw 7 is easy to fail;
when the steering oar is switched in the forward and reverse rotation mode, because the spline has a gap, under the condition that the rotary pinion 3 does not start to rotate, the output shaft 2 can drive the baffle 5 to rotate forward and reverse, and if the torsion of the output shaft 2 driving the baffle 5 to rotate forward and reverse is borne by the connecting screw 7, the connecting screw 7 is easy to fail;
the rotation driving device on the rudder propeller works under the working conditions of large stress and frequent positive and negative rotation, and if the connecting screw 7 bears the bending moment and the torsion, the connecting screw 7 is inevitably failed after being used for a period of time.
In the invention, an annular groove 8 is formed at the joint of an output shaft 2 and a rotary pinion 3, an annular boss 52 which is integrated with a baffle 5 is arranged at the top of the baffle 5, and an inner groove wall 81 of the annular groove 8 is in transition fit with the inner wall of the annular boss 52; the outer groove wall 82 of the annular groove 8 is in transition fit with the outer wall of the annular boss 52; through the transition fit between the annular boss 52 and the annular groove 8, the output shaft 2 and the pinion 3 can be tightly matched together through the annular boss 52, and the bending moment borne by the pinion 3 can be completely transmitted to the output shaft 2 through the annular boss 52, so that the bending moment is prevented from acting on the baffle 5 and being borne by the connecting screw 7;
when the steering oar is switched to rotate forwards and backwards, the output shaft 2 can drive the baffle to rotate forwards and backwards, and the torsion pin 6 is in interference fit with the pin hole 21 and the through hole 51 which correspond to each other at the same time, so that the torsion force acts on the torsion pin 6, and the connecting screw 7 does not bear the torsion force;
therefore, the connecting screw 7 in the design only bears the pre-tightening tension, is not influenced by bending moment and torsion force, is not easy to lose efficacy, and the split structure of the whole steering oar rotation driving device is safe and reliable, so that the split structure of the steering oar rotation driving device achieves the same effect as the integrated structure.
In actual processing, if a gap is formed between the annular boss 52 and the annular groove 8, the gap between the inner wall of the annular boss 52 and the inner groove wall 81 of the annular groove 8 is less than 0.03 mm; the clearance between the outer wall of the annular boss 52 and the outer groove wall 82 of the annular groove 8 is less than 0.03 mm.
In order to avoid that the outer contact surface 54 and the bottom of the rotary pinion cannot be pressed due to the fact that the bottom of the rotary shaft 2 or the top surface of the baffle 5 is not smooth enough in actual assembly, a gap of 0.5 +/-0.1 mm is formed between the inner contact surface 53 and the bottom of the rotary shaft 2, and therefore the outer contact surface 54 is guaranteed to be tightly matched with the bottom of the rotary pinion 3, and the rotary pinion 3 does not slide axially.
Example 1:
a split type structure of a steering oar rotation driving device comprises a driving device 1, an output shaft 2, a rotation pinion 3 and a rotation supporting part 4, wherein the driving device 1 is in transmission fit with the output shaft 2, the rotation pinion 3 is sleeved on the output shaft 2, the output shaft 2 is in transmission fit with the rotation pinion 3 through a spline, and the rotation pinion 3 is in transmission fit with the rotation supporting part 4; the bottom of the output shaft 2 is provided with a baffle plate 5 and a torsion pin 6, the baffle plate 5 is connected with the output shaft 2 through a connecting screw 7, the bottom of the output shaft 2 is provided with a pin hole 21, the baffle plate 5 is provided with a through hole 51 corresponding to the pin hole 21, and the torsion pin 6 is simultaneously in interference fit with the corresponding pin hole 21 and the through hole 51; an annular groove 8 is formed at the joint of the output shaft 2 and the rotary pinion 3, an annular boss 52 which is integrated with the baffle 5 is arranged at the top of the baffle 5, an inner groove wall 81 of the annular groove 8 is in transition fit with the inner wall of the annular boss 52, and an outer groove wall 82 of the annular groove 8 is in transition fit with the outer wall of the annular boss 52; the clearance between the inner wall of the annular boss 52 and the inner groove wall 81 of the annular groove 8 is less than 0.03 mm; the clearance between the outer wall of the annular boss 52 and the outer groove wall 82 of the annular groove 8 is less than 0.03 mm.
Example 2:
example 2 is substantially the same as example 1 except that:
the upper surface of the baffle 5 comprises an inner contact surface 53 and an outer contact surface 54, the inner contact surface 53 is positioned on the inner side of the annular boss 52, the outer contact surface 54 is positioned on the outer side of the annular boss 52, the outer contact surface 54 is tightly matched with the bottom surface of the rotary pinion 3, and the size of a gap between the inner contact surface 53 and the bottom surface of the output shaft 2 is 0.5 +/-0.1 mm.
Example 3:
example 3 is substantially the same as example 2 except that:
three to six pin holes 21 are formed in the output shaft 2, three to six through holes 51 corresponding to the pin holes 21 are formed in the baffle 5, the number of the torsion pins 6 is equal to that of the pin holes 21, the torsion pins 6 are uniformly distributed along the circumference, and the torsion pins 6 are simultaneously in interference fit with a single group of the pin holes 21 and the through holes 51 which correspond to each other; the connecting screw 7 penetrates through the baffle 5 and then is in threaded fit with the output shaft 7, and the baffle 5 is connected with the output shaft 2 through a plurality of connecting screws 7; the number of the connecting screws 7 is equal to that of the torsion pins 6, and the connecting screws 7 and the torsion pins 6 are arranged at intervals; an inner ring of the rotary supporting part 4 is provided with an inner gear 41, and the inner gear 41 is meshed with the rotary pinion 3; the bottom of the baffle 5 is provided with a loose-proof punched hole 55 along the periphery of the through hole 51.
Claims (8)
1. The utility model provides a rudder oar slewing drive device's split type structure, includes drive arrangement (1), output shaft (2), gyration pinion (3) and slewing bearing portion (4), its characterized in that:
the driving device (1) is in transmission fit with the output shaft (2), the rotary pinion (3) is sleeved on the output shaft (2), the output shaft (2) is in transmission fit with the rotary pinion (3) through a spline, and the rotary pinion (3) is in transmission fit with the rotary supporting part (4);
the bottom of the output shaft (2) is provided with a baffle plate (5) and a torsion pin (6), the baffle plate (5) is connected with the output shaft (2) through a connecting screw (7), the bottom of the output shaft (2) is provided with a pin hole (21), the baffle plate (5) is provided with a through hole (51) corresponding to the pin hole (21), and the torsion pin (6) is simultaneously in interference fit with the corresponding pin hole (21) and the through hole (51);
the rotary type hydraulic pump is characterized in that an annular groove (8) is formed in the joint of the output shaft (2) and the rotary pinion (3), an annular boss (52) which is of an integral structure with the baffle (5) is arranged at the top of the baffle (5), the inner groove wall (81) of the annular groove (8) is in transition fit with the inner wall of the annular boss (52), and the outer groove wall (82) of the annular groove (8) is in transition fit with the outer wall of the annular boss (52).
2. The split structure of the rudder propeller slewing drive device according to claim 1, wherein:
and the clearance between the inner wall of the annular boss (52) and the inner groove wall (81) of the annular groove (8) is less than 0.03 mm.
3. The split structure of the rudder propeller slewing drive device according to claim 2, wherein:
and the clearance between the outer wall of the annular boss (52) and the outer groove wall (82) of the annular groove (8) is less than 0.03 mm.
4. The split structure of the rudder propeller slewing drive device according to claim 1, 2 or 3, wherein:
the upper surface of the baffle (5) comprises an inner contact surface (53) and an outer contact surface (54), the outer contact surface (54) is positioned on the outer side of the annular boss (52), and the outer contact surface (54) is tightly matched with the bottom surface of the rotary pinion (3); the inner contact surface (53) is positioned on the inner side of the annular boss (52), and the size of a gap between the inner contact surface (53) and the bottom surface of the output shaft (2) is 0.5 +/-0.1 mm.
5. The split structure of the rudder propeller slewing drive device according to claim 4, wherein:
three to six pin holes (21) are formed in the output shaft (2), the number of the through holes (51) in the baffle plate (5) is equal to that of the pin holes (21), the number of the torsion pins (6) is equal to that of the pin holes (21), and the torsion pins (6) are uniformly distributed along the circumference.
6. The split structure of the rudder propeller slewing drive device according to claim 5, wherein:
the connecting screws (7) penetrate through the baffle (5) and then are in threaded fit with the output shaft (7), and the baffle (5) is connected with the output shaft (2) through the connecting screws (7);
the number of the connecting screws (7) is equal to that of the torsion pins (6), and the connecting screws (7) and the torsion pins (6) are arranged at intervals.
7. The split structure of the rudder propeller slewing drive device according to claim 6, wherein:
an inner ring of the rotary supporting part (4) is provided with an inner gear (41), and the inner gear (41) is meshed with the rotary pinion (3).
8. The split structure of the rudder propeller slewing drive device according to claim 7, wherein:
the bottom of the baffle (5) is provided with a loose-proof punched hole (55) along the periphery of the through hole (51).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011184145.3A CN112278212B (en) | 2020-10-29 | 2020-10-29 | Split type structure of steering oar rotation driving device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011184145.3A CN112278212B (en) | 2020-10-29 | 2020-10-29 | Split type structure of steering oar rotation driving device |
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| CN112278212B CN112278212B (en) | 2022-01-28 |
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| CN102501960A (en) * | 2011-11-15 | 2012-06-20 | 无锡德林船舶设备有限公司 | Transmission device of nozzle rudder |
| CN103910055A (en) * | 2014-04-10 | 2014-07-09 | 武汉船用机械有限责任公司 | Multifunctional emergency steering device of full-circle-swinging steering oar |
| CN204477121U (en) * | 2015-02-09 | 2015-07-15 | 镇江维斯特船用设备有限公司(外商独资) | A kind of salvage boat revolution suspension bracket speed limiting clutch device |
| US10377460B1 (en) * | 2015-10-30 | 2019-08-13 | Logan Clutch Corporation | Modular drive apparatus |
| CN205639567U (en) * | 2016-03-18 | 2016-10-12 | 浙江三力士智能装备制造有限公司 | Propeller shaft seal device of fully -rotary steering oar |
| ES1168933Y (en) * | 2016-10-19 | 2017-01-25 | Zubergoitia Jose Antonio Barbarias | BOATS OPERATED BY PEDALS |
| CN107235135A (en) * | 2017-04-27 | 2017-10-10 | 武汉船用机械有限责任公司 | A kind of helm of all-direction propeller |
| CN208311412U (en) * | 2018-04-19 | 2019-01-01 | 北京大圣格尔冶金设备有限公司 | A kind of rotary vertical shaft assembly |
| CN209870708U (en) * | 2019-03-12 | 2019-12-31 | 中国船舶重工集团公司第七0四研究所 | High-power large-size controllable pitch propeller hub |
| CN210318433U (en) * | 2019-07-18 | 2020-04-14 | 宁波东力传动设备有限公司 | Compact bearing baffle structure |
| CN211777165U (en) * | 2020-03-11 | 2020-10-27 | 河南铁福来装备制造股份有限公司 | Power slewing device |
| CN211715719U (en) * | 2020-03-20 | 2020-10-20 | 三一汽车制造有限公司 | Engineering machinery and transfer case |
| CN111516837A (en) * | 2020-05-21 | 2020-08-11 | 杭州电子科技大学 | AUV propulsion unit with built-in steering |
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