WO2008120835A1 - Oil distribution box of controllable pitch propeller system - Google Patents

Oil distribution box of controllable pitch propeller system Download PDF

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Publication number
WO2008120835A1
WO2008120835A1 PCT/KR2007/001970 KR2007001970W WO2008120835A1 WO 2008120835 A1 WO2008120835 A1 WO 2008120835A1 KR 2007001970 W KR2007001970 W KR 2007001970W WO 2008120835 A1 WO2008120835 A1 WO 2008120835A1
Authority
WO
WIPO (PCT)
Prior art keywords
box
feedback
liner
nonrotative
twin tube
Prior art date
Application number
PCT/KR2007/001970
Other languages
French (fr)
Inventor
Jong-Seok Hwang
Ki-In Kim
Jeong-Ryul Kim
Vitaly Shuripa
Dong-Chun Jeon
Ki-Ju Song
In-Suk Song
Ji-Hyoub Cha
Original Assignee
Dsk Co., Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dsk Co., Ltd. filed Critical Dsk Co., Ltd.
Publication of WO2008120835A1 publication Critical patent/WO2008120835A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H3/00—Propeller-blade pitch changing
    • B63H3/06—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical
    • B63H3/08—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H3/00—Propeller-blade pitch changing
    • B63H3/06—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical
    • B63H3/08—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid
    • B63H2003/088—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid characterised by supply of fluid actuating medium to control element, e.g. of hydraulic fluid to actuator co-rotating with the propeller

Definitions

  • the present invention relates to an oil distribution box for a marine controllable pitch propeller of the type in which a hydraulic servo in the propeller hub controls the pitch position of the propeller blades.
  • the box is intended for use with a marine controllable pitch propeller of the type having a main hydraulic servo within a hub for controlling the pitch of propeller blades rotatably carried by the hub and including a directional valve actuated by a tubular valve rod extending through the propeller shaft from the oil distribu-t ion box.
  • It comprises an outer stationary housing, a shaft received within the housing and coupled to the propeller shaft and an auxiliary servo chamber cylinder coupled to the shaft.
  • a piston received in the servo chamber is coupled to the valve rod.
  • Oil is supplied to the valve rod through an elongated annular supply chamber defined between the shaft and the valve rod by spaced-apart seals, a port in the valve rod opening to the supply chamber, a port in the shaft opening to the supply chamber and a journal clearance seal between the housing and shaft in register with the port in the shaft.
  • Oil distribution (OD) box described in a book Controllable Pitch Propellers of Keith Brownlie (page, 43, Fig. 21 published by the institute of Marine Engineersl998) is mounted at forward end of the reduction gear and connected to twin tube.
  • the stub shaft cares OD bush having the seal bearings.
  • the OD bush is jointed with to supply and return lines through system of the swivels and hinges.
  • the feedback is provided by connection of the OD bush through rod to shaft.
  • the shaft cares the link connected with potentiometer to send signal to control valve of the hydraulic unit. That OD box has near twenty elastic seals.
  • the present invention provides 'oil distribution box(OD box) of controllable pitch propel ler system' .
  • OD box comprises supply nonrotative liner with astern port and ahead port; nonrotative liner closed by flange having seals on both sides; inside of nonrotative liner the twin tube is inserted, in twin tube the ahead channel and the astern channel are made, on one side of the twin tube the guide carrier is arranged on the bearing and supported by the cap; in the guide carrier the groove is made for sliding block, which connected through pin with the fork, which is fixed through the fork sleeve on the feedback shaft by the dowel, the feedback shaft is installed on box bearing in feedback box with the box seals arranged in the boss of the feedback box, which is closed by the cover.
  • And OD box comprises supply nonrotative thick walled liner with astern port and ahead port locate on one side; inside of nonrotative liner the twin tube is inserted, in twin tube the ahead channel and the astern channel are made, on one side of the twin tube the guide carrier is arranged on the bearing and supported by the cap; in the guide carrier the groove is made for sliding block, which connected through pin with the fork, which is fixed through the fork sleeve on the feedback shaft by the dowel, the feedback shaft is installed on box bearing in feedback box with the box seals arranged in the boss of the feedback box, which is closed by the cover.
  • FIG.l is the top view and B-B section view of the OD box in condition of full astern.
  • FIG.2 is the top view and A-A section view of the OD box in condition of full astern.
  • FIG.3 is the top view and B-B section view of the OD box in condition of full astern.
  • FIG.4 is the top view and F-F section view of the OD box in condition of ahead.
  • FIG.5 is the scheme of oil supply to hub space of controllable pitch propeller controllable.
  • FIG.6 is longitudinal section view of the OD box with thick liner in condition of ahead. [Best Mode]
  • OD box comprises supply nonrotative liner 1 with astern port 4 and ahead port 5.
  • twin tube 3 Inside of supply nonrotative liner 1 twin tube 3 is inserted.
  • twin tube 3 ahead channel 6 and astern channel 7 are made.
  • guide carrier 11 On right side of twin tube 3 guide carrier 11 is arranged on bearing 24 and supported by cap 19.
  • groove 16 is made for sliding block 12 connected through pin 15 with fork 14.
  • Fork 14 is fixed through fork sleeve 23 on feedback shaft 13 by dowel 20.
  • Shaft 13 is installed on box bearing 21 in feedback box 10 with box sealsl7 arranged in boss 22 of the feedback box 10 closed by cover 26.
  • ahead port 5 (FIG.l) and follows through channel 6 and line A to space A of the hub.
  • Channel 6 is located in twin tube 3, which is rotated together with propeller shaft S. Pressed oil in space A of the hub pushes piston P to right side and customizes assigned blade pitch.
  • Piston P pushes lines A and B, which are rigidly connected with twin tube 3.
  • Lines A and B typically are manufactured as pipe is located concentrically inside other pipe.
  • Feedback signal about blade pitch is sent to control unit (not shown) through linkage including guide carrier 11 supported by cap 19 and having groove 16.
  • Fork 14 rotates feedback shaft 13 can be connected for example with potentiometer to regulate electric signal for control unit. Beside that on shaft 13 can be arranged indicator of blade pitch in typical manner. Because twin tube 3 is rotated together with propeller shaft but nonrotative liner 1 is not rotated interaction between them is arranged through bearing-seal, which work as bearing for twin tube 3 and seal to prevent inadmissible leakage from high pressure side to low pressure side.
  • Thickness of nonrotative liner 1 is designed to prevent creation by high oil pressure of the gap between nonrotative liner surface and bearing surface.
  • Seals 8 which are arranged in nonrotative liner 1, prevent oil leakage from space between channels 6 and 7.
  • Optionally seal 9 can be arranged between nonrotative liner 1 and feedback box 10.
  • Feedback box 10 is covered by cover 26 and has bearing 21 for fork shaft 13.
  • Depend on preference inside feedback box 10 can operate with oil or without oil.
  • seals 17 can be arranged.
  • Channel 7 is located in twin tube 3, which is rotated together with propeller shaft S (FIG.5). Pressed oil in space B of the hub pushes piston P to left side and customizes assigned blade pitch. Piston P pushes lines A and B, which are rigidly connected with twin tube 3.
  • Feedback signal about blade pitch is sent to control unit (not shown) through linkage including guide carrier 11 supported by cap 19 and having groove 16.
  • FIG.6 OD box with thick walled liner having ahead port 5 and astern port 4 on one.
  • the OD box can be inserted for example in gear box case or inside gear wheel shaft dependent on design solution. Assembly components are some as described regarding FIG.l and FIG.2, operational procedure is also same.
  • the present invention we can reduce the quantity of OD box components especially elastic seals, and we can simplify the structure of OD box. Accordingly, if the present invention is introduced into the shipbuilding or machine industry, its practical and economic value can be sufficiently accomplished.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Sealing Devices (AREA)

Abstract

Therefore it is primary object of the present invention to provide new OD box for controllable pitch propeller, which is of simplified construction having reduced number of the parts particularly elastic seals. OD box comprises supply nonrotative liner with astern port and ahead port. Nonrotative liner is closed by flange having seals on both sides. Inside of supply nonrotative liner the twin tube is inserted. In twin tube the ahead channel and the astern channel are made. On right side of the twin tube guide carrier is arranged on the bearing and supported by the cap. In guide carrier the groove is made for sliding block, which connected through pin with the fork. The fork is fixed through the fork sleeve on the feedback shaft by the dowel. The shaft is installed on box bearing in feedback box with the box seals arranged in the boss of the feedback box, which is closed by the cover.

Description

[DESCRIPTION] [Invention Tit Ie]
OIL DISTRIBUTION BOX OF CONTROLLABLE PITCH PROPELLER SYSTEM [Technical Field]
The present invention relates to an oil distribution box for a marine controllable pitch propeller of the type in which a hydraulic servo in the propeller hub controls the pitch position of the propeller blades. [Background Art]
U.S. Pat. No. 4,907,992, which issued to Cavallaro et al on Mar. 13, 1990, describes an oil distribution box for a marine controllable pitch propel ler .
The box is intended for use with a marine controllable pitch propeller of the type having a main hydraulic servo within a hub for controlling the pitch of propeller blades rotatably carried by the hub and including a directional valve actuated by a tubular valve rod extending through the propeller shaft from the oil distribu-t ion box.
It comprises an outer stationary housing, a shaft received within the housing and coupled to the propeller shaft and an auxiliary servo chamber cylinder coupled to the shaft. A piston received in the servo chamber is coupled to the valve rod. Oil is supplied to the valve rod through an elongated annular supply chamber defined between the shaft and the valve rod by spaced-apart seals, a port in the valve rod opening to the supply chamber, a port in the shaft opening to the supply chamber and a journal clearance seal between the housing and shaft in register with the port in the shaft.
Oil distribution (OD) box described in a book Controllable Pitch Propellers of Keith Brownlie (page, 43, Fig. 21 published by the institute of Marine Engineersl998) is mounted at forward end of the reduction gear and connected to twin tube.
Jointed to twine tube the stub shaft cares OD bush having the seal bearings. The OD bush is jointed with to supply and return lines through system of the swivels and hinges. The feedback is provided by connection of the OD bush through rod to shaft. The shaft cares the link connected with potentiometer to send signal to control valve of the hydraulic unit. That OD box has near twenty elastic seals.
[Disclosure]
[Technical Problem]
For all OD boxes for controllable pitch propeller the critical disadvantage is using significant amount of the parts and particularly elastic seals. As known elastic seals are more vulnerable details of machines.
[Technical Solution]
In order to accomplish the above-mentioned objective, the present invention provides 'oil distribution box(OD box) of controllable pitch propel ler system' .
OD box comprises supply nonrotative liner with astern port and ahead port; nonrotative liner closed by flange having seals on both sides; inside of nonrotative liner the twin tube is inserted, in twin tube the ahead channel and the astern channel are made, on one side of the twin tube the guide carrier is arranged on the bearing and supported by the cap; in the guide carrier the groove is made for sliding block, which connected through pin with the fork, which is fixed through the fork sleeve on the feedback shaft by the dowel, the feedback shaft is installed on box bearing in feedback box with the box seals arranged in the boss of the feedback box, which is closed by the cover.
And OD box comprises supply nonrotative thick walled liner with astern port and ahead port locate on one side; inside of nonrotative liner the twin tube is inserted, in twin tube the ahead channel and the astern channel are made, on one side of the twin tube the guide carrier is arranged on the bearing and supported by the cap; in the guide carrier the groove is made for sliding block, which connected through pin with the fork, which is fixed through the fork sleeve on the feedback shaft by the dowel, the feedback shaft is installed on box bearing in feedback box with the box seals arranged in the boss of the feedback box, which is closed by the cover.
[Advantageous Effects]
According to the present invention, we can reduce the quantity of OD box components especially elastic seals, and we can simplify the structure of OD box. [Description of Drawings]
FIG.l is the top view and B-B section view of the OD box in condition of full astern.
FIG.2 is the top view and A-A section view of the OD box in condition of full astern.
FIG.3 is the top view and B-B section view of the OD box in condition of full astern.
FIG.4 is the top view and F-F section view of the OD box in condition of ahead.
FIG.5 is the scheme of oil supply to hub space of controllable pitch propeller controllable.
FIG.6 is longitudinal section view of the OD box with thick liner in condition of ahead. [Best Mode]
OD box comprises supply nonrotative liner 1 with astern port 4 and ahead port 5. Nonrotative liner lclosed by flange 18 having seals 8 and 25. Inside of supply nonrotative liner 1 twin tube 3 is inserted. In twin tube 3 ahead channel 6 and astern channel 7 are made. On right side of twin tube 3 guide carrier 11 is arranged on bearing 24 and supported by cap 19. In guide carrier 11 groove 16 is made for sliding block 12 connected through pin 15 with fork 14. Fork 14 is fixed through fork sleeve 23 on feedback shaft 13 by dowel 20. Shaft 13 is installed on box bearing 21 in feedback box 10 with box sealsl7 arranged in boss 22 of the feedback box 10 closed by cover 26.
During operation for providing ahead conditions the oil is pressed (for example 6 MPa) to ahead port 5 (FIG.l) and follows through channel 6 and line A to space A of the hub.
Channel 6 is located in twin tube 3, which is rotated together with propeller shaft S. Pressed oil in space A of the hub pushes piston P to right side and customizes assigned blade pitch.
Piston P pushes lines A and B, which are rigidly connected with twin tube 3. Lines A and B typically are manufactured as pipe is located concentrically inside other pipe.
Return oil from space B of the hub is pushed by piston P through line A and astern channel 7 to astern port 4 and further to tank of hydraulic unit (not shown).
Feedback signal about blade pitch is sent to control unit (not shown) through linkage including guide carrier 11 supported by cap 19 and having groove 16.
During motion of the twin tube 3, which is pushed by piston P carrier 11, which is mounted on rotated twin tube 3 by bearing 24 (FIG.2), which is moved also in that case to right side. During motion of guide carrier 11 sliding block 12 is slid in groove 16, provides turning of fork 14 fixed by sleeve 23 and dowel 20 (FIG.3) on shaft 13.
Fork 14 rotates feedback shaft 13 can be connected for example with potentiometer to regulate electric signal for control unit. Beside that on shaft 13 can be arranged indicator of blade pitch in typical manner. Because twin tube 3 is rotated together with propeller shaft but nonrotative liner 1 is not rotated interaction between them is arranged through bearing-seal, which work as bearing for twin tube 3 and seal to prevent inadmissible leakage from high pressure side to low pressure side.
Thickness of nonrotative liner 1 is designed to prevent creation by high oil pressure of the gap between nonrotative liner surface and bearing surface.
Seals 8, which are arranged in nonrotative liner 1, prevent oil leakage from space between channels 6 and 7.
Optionally seal 9 can be arranged between nonrotative liner 1 and feedback box 10. Feedback box 10 is covered by cover 26 and has bearing 21 for fork shaft 13. Depend on preference inside feedback box 10 can operate with oil or without oil. In case of operation with oil in boss 22 of feedback box 10 seals 17 can be arranged.
During operation for providing astern conditions the oil is pressed (for example 6 MPa) to astern port 4 (FIG.3) and follows through channel 7 and line B to space B of the hub (FIG.5).
Channel 7 is located in twin tube 3, which is rotated together with propeller shaft S (FIG.5). Pressed oil in space B of the hub pushes piston P to left side and customizes assigned blade pitch. Piston P pushes lines A and B, which are rigidly connected with twin tube 3.
Return oil from space A of the hub is pushed by piston P through line B and ahead channel 6 to ahead port 5 and further to tank of hydraulic unit (not shown).
Feedback signal about blade pitch is sent to control unit (not shown) through linkage including guide carrier 11 supported by cap 19 and having groove 16.
During motion of the twin tube 3, which is pushed by piston P carrier 11, which is mounted on rotated twin tube 3 by bearing 24 (FIG.2), which is moved also in that case to left side. During motion of guide carrier 11 sliding block 12 is slid in groove 16, provides turning of fork 14 fixed by sleeve 23 and dowel 20 on shaft 13. Fork 14 rotates feedback shaft 13 connected with potentiometer to regulate electric signal for control unit.
Represented on FIG.6 OD box with thick walled liner having ahead port 5 and astern port 4 on one. In that case the OD box can be inserted for example in gear box case or inside gear wheel shaft dependent on design solution. Assembly components are some as described regarding FIG.l and FIG.2, operational procedure is also same.
While there are shown and described present pre-ferred embodiments of the invention, it is to be dis-tinctly understood that the invention is not limited thereto, but may be otherwise variously embodied and practiced within the scope of the following claims. [Industrial Applicability]
According to the present invention, we can reduce the quantity of OD box components especially elastic seals, and we can simplify the structure of OD box. Accordingly, if the present invention is introduced into the shipbuilding or machine industry, its practical and economic value can be sufficiently accomplished.

Claims

[CLAIMS]
[Claim 1]
OD box comprises supply nonrotative liner with astern port and ahead port; nonrotative liner closed by flange having seals on both sides; inside of nonrotative liner the twin tube is inserted, in twin tube the ahead channel and the astern channel are made, on one side of the twin tube the guide carrier is arranged on the bearing and supported by the cap; in the guide carrier the groove is made for sliding block, which connected through pin with the fork, which is fixed through the fork sleeve on the feedback shaft by the dowel, the feedback shaft is installed on box bearing in feedback box with the box seals arranged in the boss of the feedback box, which is closed by the cover.
[Claim 2]
OD box comprises supply nonrotative thick walled liner with astern port and ahead port locate on one side; inside of nonrotative liner the twin tube is inserted, in twin tube the ahead channel and the astern channel are made, on one side of the twin tube the guide carrier is arranged on the bearing and supported by the cap; in the guide carrier the groove is made for sliding block, which connected through pin with the fork, which is fixed through the fork sleeve on the feedback shaft by the dowel, the feedback shaft is installed on box bearing in feedback box with the box seals arranged in the boss of the feedback box, which is closed by the cover.
PCT/KR2007/001970 2007-03-29 2007-04-23 Oil distribution box of controllable pitch propeller system WO2008120835A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2007-0030652 2007-03-29
KR1020070030652A KR100836637B1 (en) 2007-03-29 2007-03-29 Oil distribution box of controllable pitch propeller

Publications (1)

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WO2008120835A1 true WO2008120835A1 (en) 2008-10-09

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WO (1) WO2008120835A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106323616A (en) * 2016-08-26 2017-01-11 武汉船用机械有限责任公司 Box type oil distributor rotating test system
CN107044301A (en) * 2016-12-13 2017-08-15 惠阳航空螺旋桨有限责任公司 Locking device for propeller beta pipe

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101358119B1 (en) * 2012-01-31 2014-02-07 삼성중공업 주식회사 Driving apparatus of variable pitch propeller and blade pitch angle control method and the ship having the same
KR102051125B1 (en) 2018-06-08 2019-12-02 주식회사 케이티이 Oil distribution box of variable pitch propeller
KR102092555B1 (en) * 2018-11-27 2020-03-24 (주)대광테크 Compact oil distribution apparatus preferably for thruster with controllable pitch propeller

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4028004A (en) * 1974-07-03 1977-06-07 Lips B.V. Feathering controllable pitch propeller
US4563940A (en) * 1982-04-15 1986-01-14 Escher Wyss Gmbh Oil infeed device for an adjustable pitch propeller
WO1986002901A1 (en) * 1984-11-17 1986-05-22 Sulzer-Escher Wyss Gmbh Method and apparatus for adjusting propeller blades of a hydraulically controlled variable pitch propeller
JPS6248898U (en) * 1985-09-17 1987-03-26

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4028004A (en) * 1974-07-03 1977-06-07 Lips B.V. Feathering controllable pitch propeller
US4563940A (en) * 1982-04-15 1986-01-14 Escher Wyss Gmbh Oil infeed device for an adjustable pitch propeller
WO1986002901A1 (en) * 1984-11-17 1986-05-22 Sulzer-Escher Wyss Gmbh Method and apparatus for adjusting propeller blades of a hydraulically controlled variable pitch propeller
JPS6248898U (en) * 1985-09-17 1987-03-26

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106323616A (en) * 2016-08-26 2017-01-11 武汉船用机械有限责任公司 Box type oil distributor rotating test system
CN107044301A (en) * 2016-12-13 2017-08-15 惠阳航空螺旋桨有限责任公司 Locking device for propeller beta pipe
CN107044301B (en) * 2016-12-13 2022-02-11 惠阳航空螺旋桨有限责任公司 Locking device for propeller beta tube

Also Published As

Publication number Publication date
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