CN102556312A - Screw pitch feedback rod device for adjustable-pitch full-rotation propeller - Google Patents
Screw pitch feedback rod device for adjustable-pitch full-rotation propeller Download PDFInfo
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- CN102556312A CN102556312A CN2012100045215A CN201210004521A CN102556312A CN 102556312 A CN102556312 A CN 102556312A CN 2012100045215 A CN2012100045215 A CN 2012100045215A CN 201210004521 A CN201210004521 A CN 201210004521A CN 102556312 A CN102556312 A CN 102556312A
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- feedback rod
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Abstract
A screw pitch feedback rod device for an adjustable-pitch full-rotation propeller comprises an upper feedback rod device and a lower feedback rod device, wherein the upper feedback rod device is arranged in a rotation unit, and the lower feedback rod device is arranged in a propelling unit. The upper feedback rod device comprises an upper rod cavity, an upper connecting rod, a copper bush, a ball seat, a spring, a retaining ring and steel balls, wherein the lower end of the upper connecting rod is connected with the ball seat sliding along an inner cavity of the copper bush, the side wall of the ball seat is provided with through holes, the steel balls are arranged in the through holes, the spring and the retaining ring are arranged in a lower ball seat cavity in the ball seat, the lower end of the retaining ring contacts with positions laterally above the steel balls, and the steel balls are jointly limited by the inner cavity of the copper bush, the lower end of the retaining ring and the through holes. The lower feedback rod device comprises a lower rod cavity, a lower connecting rod and a lower rod head, wherein the lower rod head comprises an upper head portion and a lower head portion, and the top end of the upper head portion is correspondingly matched with the lower end of the retaining ring. By the aid of the screw pitch feedback rod device in the design, automatic connection and disconnection are achieved, operating difficulty is reduced, and precision of screw pitch feedback signals can be guaranteed.
Description
Technical field
The present invention relates to a kind of pitch feedback rod device, relate in particular to a kind of adjustable pitch all-direction propeller, specifically be applicable to the automatic engagement and the disengagement that realize feedback rod, and can guarantee the precision of pitch feedback signal with pitch feedback rod device.
Background technology
The adjustable pitch all-direction propeller is a kind of later-model propeller device for vessel, and its decapacitation produces outside the thrust as common propelling unit, can also in 360 ° of scopes, change thrust direction, so have the function of propelling unit and steering wheel concurrently, can significantly improve the handling of boats and ships.The base portion of adjustable pitch all-direction propeller generally is divided into turning unit and propulsion unit; Connect through flange between Unit two; Thereby the feedback rod of pitch feedback mechanism also is divided into two sections at the flange place in the adjustable pitch all-direction propeller, is feedback rod device and following feedback rod device, wherein; Be positioned at feedback rod device under the propulsion unit in-to-in and be responsible for the detection of pitch, be positioned on the turning unit in-to-in feedback rod device and be responsible for transmitting mechanical signal.
Propulsion unit and turning unit are in the process of Assembly &Disassembly, and the feedback rod that is used for transmitting the mechanical feedback signal of pitch also must connect thereupon and break off, because the stroke of feedback mechanism is limited; Can not be before propelling unit flange and the installation of axis of revolution flange; In the bigger space of relative distance, connect and the dismounting feedback mechanism, this just requires the feedback mechanism at this place can realize automatic engagement, promptly is divided into the function that two sections feedback rod will possess automatic engagement and disengagement; Thereby be convenient to operation; In addition, feedback rod must guarantee also that behind automatic engagement the gap of vertical direction is as far as possible little, to guarantee the precision of pitch feedback signal.
The Chinese patent Granted publication number is CN201999189U, and Granted publication day is that the utility model patent on October 5th, 2011 discloses a kind of pitch ultramagnifier, comprises sleeve pipe, case in and magnetic displacement transducer; Said cased lower end is provided with the through hole that the pilot bar that supplies side thruster stretches into; Captiveing joint with the lower end of last sleeve pipe in said cased upper end, captives joint with pipe link in the upper end of said pilot bar, and the upper end of said pipe link is provided with spring mounting seat; Spring housing is contained on the said pipe link; The upper end of said spring withstands on the lower end of said spring mounting seat, and the lower end of said spring withstands on said cased intracavity bottom, and said spring mounting seat is sleeved on the inwall of sleeve pipe slidably; Said magnetic displacement transducer comprises magnet and in order to the slide bar of induced magnet position; Said magnet is captiveed joint with said spring mounting seat, and the top of said magnet and pipe link all has cavity, and the top of said magnet and pipe link is sleeved on the said slide bar slidably.Though this utility model can provide a kind of simple in structure, minimizing takes up room, reliability is good pitch ultramagnifier; But it does not possess the function of automatic engagement and disengagement, thereby is not suitable for the adjustable pitch all-direction propeller that comprises turning unit, propulsion unit.
Summary of the invention
The objective of the invention is to overcome the defective and the problem that do not possess automatic engagement and disengagement function that exist in the prior art, provide a kind of adjustable pitch all-direction propeller that possesses automatic engagement and disengagement function with pitch feedback rod device.
For realizing above purpose; Technical solution of the present invention is: a kind of adjustable pitch all-direction propeller is with pitch feedback rod device; This pitch feedback rod device comprises feedback rod device and following feedback rod device; Said upward feedback rod device is arranged at the inside of turning unit, and following feedback rod device is arranged at the inside of propulsion unit, and turning unit is connected through flange with propulsion unit;
The said feedback rod device of going up comprises upper boom chamber, boxed rod, copper sheathing, ball seat, spring, baffle ring and steel ball; Said copper sheathing is a T type structure, comprises interconnective perpendicular copper sheathing and horizontal copper sheathing, and the upper end of perpendicular copper sheathing is connected with the upper boom chamber; The middle part in upper boom chamber is run through and is provided with boxed rod, and the lower end of horizontal copper sheathing is connected with the bottom surface of turning unit, and the intracavity diameter of perpendicular copper sheathing is less than the intracavity diameter of horizontal copper sheathing; Be provided with the ball seat with its bearing fit in the inner chamber of perpendicular copper sheathing, offer through hole on the sidewall of ball seat, be provided with steel ball in the through hole; The set inside of ball seat has upper ball base chamber and the lower ball base chamber that communicates, and ball seat is captiveed joint with the lower end of boxed rod through bolt, and bolt comprises interconnective bolt column and bolt cap; Bolt column is positioned at the inside of boxed rod lower end, and the outside of boxed rod lower end is positioned at the inside in upper ball base chamber, and bolt cap is positioned at the inside in lower ball base chamber; The outside of bolt cap is with spring, and the upper end of spring is connected with the top in lower ball base chamber, and the lower end is connected with baffle ring; The lower end of baffle ring contacts with the side of steel ball top, and steel ball is spacing jointly by the lower end of the inner chamber of horizontal copper sheathing, baffle ring, through hole;
Said feedback rod device down comprises lower beam chamber, lower link and lower beam head; The lower beam head comprises head portion and head portion; The diameter of head portion is greater than the diameter of head portion; Agree with the lower end of baffle ring is corresponding on the top of head portion, and the bottom of head portion is connected with lower link through head portion, and the diameter of lower link is between the diameter in the diameter that erects the copper sheathing inner chamber, lower ball base chamber.
The inner chamber of said horizontal copper sheathing comprises horizontal copper sheathing epicoele and horizontal copper sheathing cavity of resorption, and the upper end of horizontal copper sheathing epicoele communicates with the inner chamber of perpendicular copper sheathing, and the lower end communicates with horizontal copper sheathing cavity of resorption, and the area of horizontal copper sheathing epicoele upper end is less than the area of horizontal copper sheathing epicoele lower end; The vertical section of said horizontal copper sheathing epicoele is trapezoidal, and the vertical section of horizontal copper sheathing cavity of resorption is a rectangle.
The lower end of said baffle ring is provided with the baffle ring groove of concave inward structure, and the top of said head portion is provided with the plush copper structure of band chamfering, and the plush copper structure is agreed with the baffle ring groove is corresponding.
Compared with prior art, beneficial effect of the present invention is:
1, a kind of adjustable pitch all-direction propeller of the present invention comprises upper boom chamber, boxed rod, copper sheathing, ball seat, spring, baffle ring and steel ball with the last feedback rod device in the pitch feedback rod device; Following feedback rod device comprises lower beam chamber, lower link and lower beam head; During use; Go up the automatic engagement and the disengagement of feedback rod device and following feedback rod device through the lower beam head with the realization that cooperates of ball seat, baffle ring, steel ball; Thereby make whole pitch feedback rod device have the function of automatic engagement and disengagement, reduced operation easier.Therefore the present invention not only possesses the function of automatic engagement and disengagement, and has reduced operation easier.
2, a kind of adjustable pitch all-direction propeller of the present invention with in the pitch feedback rod device behind last feedback rod device and following feedback rod device automatic engagement; Lower beam head and baffle ring closely agree with; The mechanical displacement signal that makes lower link will transmit in vertical direction can be complete pass through lower beam head, baffle ring, ball seat pass to boxed rod successively; Guarantee that boxed rod obtains mechanical displacement signal accurately, in the process of transmitting, spring can dwindle the gap of vertical direction as far as possible; Thereby improve the accuracy of mechanical displacement signal once more, and then obtain pitch feedback signal the most accurately.Therefore the present invention can guarantee the precision of pitch feedback signal.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the structural representation before the present invention is docked.
Fig. 3 is the structural representation before the present invention removes.
Among the figure: turning unit A, propulsion unit B, last feedback rod device C, following feedback rod device D, boxed rod 1, copper sheathing 2, perpendicular copper sheathing 21, horizontal copper sheathing 22, horizontal copper sheathing epicoele 221, horizontal copper sheathing cavity of resorption 222, ball seat 3, upper ball base chamber 31, lower ball base chamber 32, spring 4, baffle ring 5, baffle ring groove 51, steel ball 6, lower beam head 7, head portion 71, plush copper structure 711, head portion 72, lower link 8, through hole 9, bolt 10, bolt column 101, bolt cap 102, upper boom chamber 11, lower beam chamber 12, flange face 13.
The specific embodiment
Below in conjunction with the description of drawings and the specific embodiment the present invention is done further detailed explanation.
Referring to figure 1 – Fig. 3; A kind of adjustable pitch all-direction propeller is with pitch feedback rod device; This pitch feedback rod device comprises feedback rod device C and following feedback rod device D; Said upward feedback rod device C is arranged at the inside of turning unit A, and following feedback rod device D is arranged at the inside of propulsion unit B, and turning unit A is connected through flange with propulsion unit B;
The said feedback rod device C that goes up comprises upper boom chamber 11, boxed rod 1, copper sheathing 2, ball seat 3, spring 4, baffle ring 5 and steel ball 6; Said copper sheathing 2 is a T type structure, comprises interconnective perpendicular copper sheathing 21 and horizontal copper sheathing 22, and the upper end of perpendicular copper sheathing 21 is connected with upper boom chamber 11; The middle part in upper boom chamber 11 is run through and is provided with boxed rod 1, and the lower end of horizontal copper sheathing 22 is connected with the bottom surface of turning unit A, and the intracavity diameter of perpendicular copper sheathing 21 is less than the intracavity diameter of horizontal copper sheathing 22; Be provided with the ball seat 3 with its bearing fit in the inner chamber of perpendicular copper sheathing 21, offer through hole 9 on the sidewall of ball seat 3, be provided with steel ball 6 in the through hole 9; The set inside of ball seat 3 has the upper ball base chamber 31 and lower ball base chamber 32 that communicates, and ball seat 3 is captiveed joint with the lower end of boxed rod 1 through bolt 10, and bolt 10 comprises interconnective bolt column 101 and bolt cap 102; Bolt column 101 is positioned at the inside of boxed rod 1 lower end; The outside of boxed rod 1 lower end is positioned at the inside in upper ball base chamber 31, and bolt cap 102 is positioned at the inside in lower ball base chamber 32, and the outside of bolt cap 102 is with spring 4; The upper end of spring 4 is connected with the top in lower ball base chamber 32; The lower end is connected with baffle ring 5, and the lower end of baffle ring 5 contacts with the side top of steel ball 6, and steel ball 6 is spacing jointly by the lower end of the inner chamber of horizontal copper sheathing 22, baffle ring 5, through hole 9;
Said feedback rod device D down comprises lower beam chamber 12, lower link 8 and lower beam head 7; Lower beam head 7 comprises head portion 71 and head portion 72; The diameter of head portion 71 is greater than the diameter of head portion 72; Agree with the lower end of baffle ring 5 is corresponding on the top of head portion 71, and the bottom of head portion 71 is connected with lower link 8 through head portion 72, and the diameter of lower link 8 is between the diameter in the diameter that erects copper sheathing 21 inner chambers, lower ball base chamber 32.
The inner chamber of said horizontal copper sheathing 22 comprises horizontal copper sheathing epicoele 221 and horizontal copper sheathing cavity of resorption 222; The upper end of horizontal copper sheathing epicoele 221 communicates with the inner chamber of perpendicular copper sheathing 21; The lower end communicates with horizontal copper sheathing cavity of resorption 222, and the area of horizontal copper sheathing epicoele 221 upper ends is less than the area of horizontal copper sheathing epicoele 221 lower ends; The vertical section of said horizontal copper sheathing epicoele 221 is trapezoidal, and the vertical section of horizontal copper sheathing cavity of resorption 222 is a rectangle.
The lower end of said baffle ring 5 is provided with the baffle ring groove 51 of concave inward structure, and the top of said head portion 71 is provided with the plush copper structure 711 of band chamfering, and plush copper structure 711 and baffle ring groove 51 corresponding agreeing with.
Principle of the present invention is explained as follows:
As turning unit A, when propulsion unit B is in separated position; Go up included ball seat 3, baffle ring 5, the steel ball 6 of feedback rod device C among the turning unit A and under the spring force effect of spring 4, be in lower end position, and the bottom of ball seat 3 slightly exceeds flange face 13 (being the bottom surface of turning unit A, the end face of a propulsion unit B) segment distance; As turning unit A, when propulsion unit B is in the docking operation; The included lower beam head 7 of feedback rod device D stretches in the ball seat 3 among the feedback rod device C under among the propulsion unit B; And agree with mutually with the lower end of baffle ring 5, with baffle ring 5 top upwards, this moment, steel ball 6 snapped in the through hole 9 fully then; Make boxed rod 1, lower link 8 locate, realize the leak-tight joint of feedback rod.Since the actual feedback stroke less than steel ball 6 can be movable stroke, thereby in the actual feedback motion, steel ball 6 can not deviate from; As turning unit A, when propulsion unit B throws off, lower beam head 7 is moved down into steel ball 6 throws off, and last feedback rod device C, following feedback rod device D have also just thrown off.The present invention all need not artificial the participation when connecting and break away from, Assembly &Disassembly is all accomplished automatically, and is convenient and reliable.
Method of application of the present invention may further comprise the steps successively:
1, before the butt joint: referring to Fig. 2; Be convenient butt joint; Last feedback rod device C, down feedback rod device D will stretch out flange face 13 certain distances, promptly goes up the bottom of ball seat 3 among the feedback rod device C, flange face 13 certain distances all will be stretched out in the top of lower link 8 and lower beam head 7 among the feedback rod device D down.At this moment, baffle ring 5 ejects steel ball 6 under spring 4 effects, and steel ball 6 is spacing jointly by the lower end of the inner chamber of horizontal copper sheathing 22, baffle ring 5, through hole 9.The extension elongation of noting ball seat 3 this moment can not surpass and requires specified value, otherwise steel ball 6 can be deviate from.
When 2, docking: lower beam head 7 stretches in the ball seat 3 among the feedback rod device C, and agrees with mutually with the lower end of baffle ring 5, passes through upwards compression spring 4 of baffle ring 5 then; And with ball seat 3 top upwards, ball seat 3 is by after the jack-up, and steel ball 6 is with moving on the ball seat 3; And sticked in the inner chamber of through hole 9 and perpendicular copper sheathing 21; Lower beam head 7 compresses steel ball 6 under the effect of spring 4 simultaneously, and steel ball 6 is spacing jointly by through hole 9, lower beam head 7, and promptly dock successfully this moment.
3, butt joint back: referring to Fig. 1, at this moment, the effect of spring 4 is axial motions of eliminating to greatest extent after the butt joint, compresses lower beam head 7 and steel ball 6, reduces the signal transmission error of joint.Simultaneously; Can adjust the position of boxed rod 1, lower link 8 according to pitch position; Because the height of the transmission scope of assurance pitch mechanical signal less than horizontal copper sheathing 22 inner chambers gone up in design; So steel ball 6 can not move to the lower end of horizontal copper sheathing 22 inner chambers in the course of the work, guarantees carrying out smoothly of mechanical signal transmission.
When 4, removing: referring to Fig. 3, lower beam head 7 drives ball seat 3 with steel ball 6 and moves down into horizontal copper sheathing 22 inner chambers, and steel ball 6 slides into horizontal copper sheathing 22 inner chambers; Lower beam head 7 is deviate from; Last feedback rod device C, feedback rod device D disengagement are down wanted during disengagement slowly, in order to avoid take steel ball 6 out of horizontal copper sheathing 22 inner chambers too soon.
Therefore, the present invention not only possess automatic engagement and disengagement function, reduced operation easier, and can guarantee the precision of pitch feedback signal.
Claims (3)
1. an adjustable pitch all-direction propeller is with pitch feedback rod device; This pitch feedback rod device comprises feedback rod device (C) and following feedback rod device (D); Said upward feedback rod device (C) is arranged at the inside of turning unit (A); Following feedback rod device (D) is arranged at the inside of propulsion unit (B), and turning unit (A) is connected through flange with propulsion unit (B), it is characterized in that:
The said feedback rod device (C) of going up comprises upper boom chamber (11), boxed rod (1), copper sheathing (2), ball seat (3), spring (4), baffle ring (5) and steel ball (6); Said copper sheathing (2) is a T type structure; Comprise interconnective perpendicular copper sheathing (21) and horizontal copper sheathing (22), the upper end of perpendicular copper sheathing (21) is connected with upper boom chamber (11), and the middle part of upper boom chamber (11) is run through and is provided with boxed rod (1); The lower end of horizontal copper sheathing (22) is connected with the bottom surface of turning unit (A); The intracavity diameter of perpendicular copper sheathing (21) is less than the intracavity diameter of horizontal copper sheathing (22), is provided with the ball seat (3) with its bearing fit in the inner chamber of perpendicular copper sheathing (21), offers through hole (9) on the sidewall of ball seat (3); Be provided with steel ball (6) in the through hole (9); The set inside of ball seat (3) has the upper ball base chamber (31) and lower ball base chamber (32) that communicates, and ball seat (3) is captiveed joint with the lower end of boxed rod (1) through bolt (10), and bolt (10) comprises interconnective bolt column (101) and bolt cap (102); Bolt column (101) is positioned at the inside of boxed rod (1) lower end; The outside of boxed rod (1) lower end is positioned at the inside of upper ball base chamber (31), and bolt cap (102) is positioned at the inside of lower ball base chamber (32), and the outside of bolt cap (102) is with spring (4); The upper end of spring (4) is connected with the top of lower ball base chamber (32); The lower end is connected with baffle ring (5), and the lower end of baffle ring (5) contacts with the side top of steel ball (6), and steel ball (6) is spacing jointly by the lower end of the inner chamber of horizontal copper sheathing (22), baffle ring (5), through hole (9);
Said feedback rod device (D) down comprises lower beam chamber (12), lower link (8) and lower beam head (7); Lower beam head (7) comprises head portion (71) and head portion (72); The diameter of head portion (71) is greater than the diameter of head portion (72); Corresponding the agreeing with in lower end of the top of head portion (71) and baffle ring (5); The bottom of head portion (71) is connected with lower link (8) through head portion (72), and the diameter of lower link (8) is positioned between the diameter of diameter, lower ball base chamber (32) of perpendicular copper sheathing (21) inner chamber.
2. a kind of adjustable pitch all-direction propeller according to claim 1 is with pitch feedback rod device; It is characterized in that: the inner chamber of said horizontal copper sheathing (22) comprises horizontal copper sheathing epicoele (221) and horizontal copper sheathing cavity of resorption (222); The upper end of horizontal copper sheathing epicoele (221) communicates with the inner chamber of perpendicular copper sheathing (21); The lower end communicates with horizontal copper sheathing cavity of resorption (222), and the area of horizontal copper sheathing epicoele (221) upper end is less than the area of horizontal copper sheathing epicoele (221) lower end; The vertical section of said horizontal copper sheathing epicoele (221) is trapezoidal, and the vertical section of horizontal copper sheathing cavity of resorption (222) is a rectangle.
3. a kind of adjustable pitch all-direction propeller according to claim 1 is with pitch feedback rod device; It is characterized in that: the lower end of said baffle ring (5) is provided with the baffle ring groove (51) of concave inward structure; The top of said head portion (71) is provided with the plush copper structure (711) of band chamfering, and plush copper structure (711) and corresponding the agreeing with of baffle ring groove (51).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201210004521.5A CN102556312B (en) | 2012-01-09 | 2012-01-09 | Screw pitch feedback rod device for adjustable-pitch full-rotation propeller |
Applications Claiming Priority (1)
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CN201210004521.5A CN102556312B (en) | 2012-01-09 | 2012-01-09 | Screw pitch feedback rod device for adjustable-pitch full-rotation propeller |
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CN102556312A true CN102556312A (en) | 2012-07-11 |
CN102556312B CN102556312B (en) | 2014-02-12 |
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CN201210004521.5A Expired - Fee Related CN102556312B (en) | 2012-01-09 | 2012-01-09 | Screw pitch feedback rod device for adjustable-pitch full-rotation propeller |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106112221A (en) * | 2016-08-24 | 2016-11-16 | 武汉船用机械有限责任公司 | The manufacture method of turning unit in a kind of rudder oar |
CN108928452A (en) * | 2018-06-21 | 2018-12-04 | 苏州船用动力***股份有限公司 | A kind of non-contact transmission indicating mechanism for ship pitch tuning for Controllable Pitch Propeller feedback |
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CN1033310A (en) * | 1987-10-20 | 1989-06-07 | 诺瓦工厂股份公司 | Linear actuator with hydaulic amplification |
EP0480211A1 (en) * | 1990-10-09 | 1992-04-15 | Peter Müller | Controllable pitch propeller |
EP0939027A2 (en) * | 1998-02-25 | 1999-09-01 | Sanshin Kougho K.K. | Tilting apparatus with a cylinder piston assembly |
JP3913262B1 (en) * | 2005-11-22 | 2007-05-09 | 川崎重工業株式会社 | Oil supply device for rotating shaft |
CN201842246U (en) * | 2010-08-25 | 2011-05-25 | 南京高精船用设备有限公司 | Novel lateral adjustable-pitch propeller for ship |
CN201999189U (en) * | 2011-03-31 | 2011-10-05 | 浙江汉力士船用推进***有限公司 | Thread pitch feedback device |
CN102248996A (en) * | 2011-04-28 | 2011-11-23 | 杭州前进齿轮箱集团股份有限公司 | Adjustable pitch propeller oil distributor with linear feedbacks |
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2012
- 2012-01-09 CN CN201210004521.5A patent/CN102556312B/en not_active Expired - Fee Related
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US2927551A (en) * | 1957-11-07 | 1960-03-08 | Curtiss Wright Corp | Steering mechanisms and the like |
US3778187A (en) * | 1971-04-13 | 1973-12-11 | Propulsion Systems Inc | Controllable pitch propellers for marine vessels |
CN1033310A (en) * | 1987-10-20 | 1989-06-07 | 诺瓦工厂股份公司 | Linear actuator with hydaulic amplification |
EP0480211A1 (en) * | 1990-10-09 | 1992-04-15 | Peter Müller | Controllable pitch propeller |
EP0939027A2 (en) * | 1998-02-25 | 1999-09-01 | Sanshin Kougho K.K. | Tilting apparatus with a cylinder piston assembly |
JP3913262B1 (en) * | 2005-11-22 | 2007-05-09 | 川崎重工業株式会社 | Oil supply device for rotating shaft |
CN201842246U (en) * | 2010-08-25 | 2011-05-25 | 南京高精船用设备有限公司 | Novel lateral adjustable-pitch propeller for ship |
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CN102248996A (en) * | 2011-04-28 | 2011-11-23 | 杭州前进齿轮箱集团股份有限公司 | Adjustable pitch propeller oil distributor with linear feedbacks |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN106112221A (en) * | 2016-08-24 | 2016-11-16 | 武汉船用机械有限责任公司 | The manufacture method of turning unit in a kind of rudder oar |
CN106112221B (en) * | 2016-08-24 | 2018-07-31 | 武汉船用机械有限责任公司 | The production method of turning unit in a kind of rudder paddle |
CN108928452A (en) * | 2018-06-21 | 2018-12-04 | 苏州船用动力***股份有限公司 | A kind of non-contact transmission indicating mechanism for ship pitch tuning for Controllable Pitch Propeller feedback |
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CN102556312B (en) | 2014-02-12 |
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