KR20160054104A - Apparatus of blade pitch control for ship - Google Patents

Apparatus of blade pitch control for ship Download PDF

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Publication number
KR20160054104A
KR20160054104A KR1020140152813A KR20140152813A KR20160054104A KR 20160054104 A KR20160054104 A KR 20160054104A KR 1020140152813 A KR1020140152813 A KR 1020140152813A KR 20140152813 A KR20140152813 A KR 20140152813A KR 20160054104 A KR20160054104 A KR 20160054104A
Authority
KR
South Korea
Prior art keywords
propeller
hub
piston
shaft
push
Prior art date
Application number
KR1020140152813A
Other languages
Korean (ko)
Inventor
박문우
Original Assignee
현대중공업 주식회사
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 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Priority to KR1020140152813A priority Critical patent/KR20160054104A/en
Publication of KR20160054104A publication Critical patent/KR20160054104A/en

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    • 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

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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)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

A propeller pitch angle adjustment system according to an embodiment of the present invention includes a propeller shaft; A push-pull hub slidably provided on an outer side of the propeller shaft, the pusher hub including a piston projecting in a vertical direction and a rear end connected to a propeller to adjust a pitch angle of the propeller; And a cylinder provided on the outer side of the push-pull hub to allow the piston to pass therethrough, the oil flowing in and out of the piston to move the piston in the forward and backward directions.
The propeller pitch angle adjustment system according to the present invention can simplify the structure by adjusting the pitch angle of the propeller according to the flow of oil, and a push-pull hub for adjusting the pitch angle of the propeller is provided at the rear end of the gear box As well as being provided outside the gear box, so that the gear structure inside the gear box is not interfered with, so that the structure can be simplified.

Description

[0001] Apparatus of blade pitch control for ship [0001]

The present invention relates to a propeller pitch angle adjustment system.

The propeller is a device for propelling the ship by changing the power of the propulsion engine transmitted through the shaft system to thrust. Ship propellers include screw propellers, jet propellers, paddle cars, and void schneider propellers. Among them, helical propellers are the most popular because they have a relatively high propulsion efficiency, relatively simple structure, and relatively low production costs.

Spiral propellers can be classified by performance, with a fixed pitch propeller (FPP) fixed to a hub connected to a rotating shaft of the propeller wing, and a propeller wing can be moved in a hub connected to the rotary shaft, A controllable pitch propeller (CPP), a contra-rotating propeller that converts the rotational force exiting from the rear propeller to a propeller that rotates in the opposite direction to the rear propeller, propeller (CRP).

Particularly, a system for controlling the variable pitch of the variable pitch propeller has a structure in which the hydraulic mechanism is located inside the gear box, the structure is complicated due to the interference of the gear structure inside the gear box, and the maintenance is limited due to the complicated structure There is a problem.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a propeller pitch angle adjusting system capable of adjusting a pitch angle of a propeller through a simple structure.

A propeller pitch angle adjustment system according to an embodiment of the present invention includes a propeller shaft; A push-pull hub slidably provided on an outer side of the propeller shaft, the pusher hub including a piston projecting in a vertical direction and a rear end connected to a propeller to adjust a pitch angle of the propeller; And a cylinder provided on the outer side of the push-pull hub to allow the piston to pass therethrough, the oil flowing in and out of the piston to move the piston in the forward and backward directions.

Specifically, the cylinder includes: a first inlet and outlet hole through which oil flows in front of the piston so that the piston is pushed rearward; and a second inlet and outlet hole through which oil flows into the rear of the piston so that the piston is pushed forward Is formed.

Specifically, the CPP hub includes a CPP hub on which the propeller is provided, wherein a rear end of the push-pull hub is connected to the propeller, and a rear end of the push-pull hub is connected to a rear end of the propeller shaft.

Specifically, the push-pull hub is provided with an oil line passing through the propeller shaft so that the oil passes between the propeller shaft and the propeller shaft.

Specifically, the propeller shaft includes: a first shaft provided at the front; And a second shaft provided at the rear of the first shaft and having a smaller diameter than the first shaft, the second shaft being adapted to slide the push-pull hub.

The propeller pitch angle adjustment system according to the present invention can simplify the structure by adjusting the pitch angle of the propeller according to the flow of oil, and a push-pull hub for adjusting the pitch angle of the propeller is provided at the rear end of the gear box As well as being provided outside the gear box, so that the gear structure inside the gear box is not interfered with, so that the structure can be simplified.

1 is a view showing a state in which a pitch angle of a propeller is increased in a propeller pitch angle adjusting system according to an embodiment of the present invention.
FIG. 2 is an enlarged view of a push-pull hub with a pitch angle of a propeller increased in a propeller pitch angle adjusting system according to an embodiment of the present invention.
3 is a view showing a state in which the pitch angle of the propeller is reduced in the propeller pitch angle adjusting system according to the embodiment of the present invention.
4 is an enlarged view of a push-pull hub with a pitch angle of a propeller increased in a propeller pitch angle adjusting system according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The objects, particular advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements have the same numerical numbers as much as possible even if they are displayed on different drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a view showing a state where a pitch angle of a propeller is increased in a propeller pitch angle adjusting system according to an embodiment of the present invention. FIG. 2 is a view showing a pitch angle of the propeller in the propeller pitch angle adjusting system according to an embodiment of the present invention. FIG. 3 is a view showing a state in which a pitch angle of a propeller is reduced in a propeller pitch angle adjusting system according to an embodiment of the present invention, and FIG. 4 is a cross- FIG. 2 is an enlarged view of a push-pull hub with a pitch angle of a propeller being increased in a propeller pitch angle adjusting system according to an embodiment of the present invention. FIG.

1 to 4, a propeller pitch angle adjustment system 100 according to an embodiment of the present invention includes a propeller shaft 130, a push-pull hub 140, and a cylinder 150, (110).

Here, the propeller 110 is rotated by a gear box 170 that receives a rotational force from a power shaft (not shown) of a power source 160 (to be described later) and decelerates to push the surrounding water backward, The direction of the ship pushed backward can be converted by a rudder (not shown) to change the traveling direction of the ship.

In the following description, the power source 160 side is referred to as a front side and the propeller side side is defined as a rear side, in contrast to a bow and stern of a ship.

The propeller shaft 130 is a shaft for rotating the propeller 110. The propeller shaft 130 receives the rotational force from the power source 160 and rotates the propeller 110. The propeller shaft 130 and the propeller 110 may be connected to each other through the CPP hub 120 and the CPP hub 120 having the propeller 110 on the circumferential surface thereof may be connected to the propeller shaft 130. At this time, the rear end of the CPP hub 120 may be connected to the rear end of the propeller shaft 130 so that the push-pull hub 140, which will be described later, penetrates the inside of the CPP hub 120 and slides on the propeller shaft 130. For example, the flange 131 is provided at the rear end of the propeller shaft 130, and the flange 131 is bolted to the CPP hub 120, so that the propeller shaft 130 and the CPP hub 120 can be connected to each other have.

The propeller shaft 130 of the present embodiment receives rotational force from the power source 160 to rotate the propeller 110. The power source 160 may be a medium speed diesel engine and the power shaft of the power source 160 may be rotated The RPM may be different from the RPM required on the propeller shaft 130. Therefore, in the present embodiment, the power is transmitted to the propeller shaft 130 by varying the power using the gear box 170, so that the propeller shaft 130 can be smoothly operated through the power supplied from the power source 160.

The propeller shaft 130 of the present embodiment may have a plurality of stages and may include a first shaft 130B and a second shaft 130A. The first shaft 130B and the second shaft 130A May be formed as a horizontal cylindrical shaft having a front end to a rear end based on the power source 160. [

The first shaft 130B is provided with a flange 132 and is coupled to the gear box 170 by a flange to receive a rotational force. The second shaft 130A is smaller in diameter than the first shaft 130B, have.

As such, the propeller shaft 130 is composed of the first shaft 130B and the second shaft 130A, and the push-pull hub 140 is mounted on the second shaft 130A provided on the rear side of the propeller shaft 130, The push-pull hub 140 is prevented from interfering with the first axis 130B when the push-pull hub 140 moves in the forward and backward directions, thereby preventing the push-pull hub 140 from being excessively advanced.

The push-pull hub 140 is slidably provided on the outer side of the propeller shaft 130 and slides on the propeller shaft 130 to rotate the crank disc 111. The propeller 110 is angled by the crank disc 111 on the CPP hub 120 so that the pitch angle is varied. Here, the crank disk 111 is connected to the crosshead 145 provided in the push-pull hub 140 and rotated.

That is, the push-pull hub 140 is connected to the propeller 110 by the CPP hub 120 to adjust the pitch angle of the propeller 110. Here, a plurality of (for example, three to six) propellers 110 are provided along the circumferential surface of the CPP hub 120, and a crank disk 111 is provided on the CPP hub 120, 111 are rotated by the movement of the push-pull hub 140 to adjust the pitch angle of the propeller 110. This pitch angle adjustment is a substitute for the known technique, and a detailed description thereof will be omitted.

The push-pull hub 140 includes a piston 141 protruding outward in the vertical direction so as to be pushed or pulled in the front-rear direction, and is moved forward and backward by the oil pressure by the cylinder 150 described later. This operation will be described later.

The push-pull hub 140 is provided so as to be in contact with the outer circumferential surface of the propeller shaft 130. At this time, the push-pull hub 140 can transmit oil between the push-pull hub 140 and the propeller shaft 130, have. To this end, the push-pull hub 140 may be provided with an oil line 144 passing through the propeller shaft 130.

For example, the oil line 144 may be supplied with oil from the cylinder 150, wherein the oil line 144 may be provided such that the inlet 142 and the outlet 143 are in communication with the cylinder 150 . The oil line 144 is formed along the longitudinal direction of the push-pull hub 140 so as to allow oil to flow smoothly between the propeller shaft 130 and the propeller shaft 130, As shown in FIG.

The cylinder 150 has a structure for moving the piston 141 and is provided on the outside of the push-pull hub 140 so that the piston 141 can pass therethrough. The piston 150 can move the piston 141 in the front- have.

For example, the cylinder 150 is provided on the outside of the push-pull hub 140, and the hollow of the cylinder 150 is partitioned by the piston 141, and by the amount of oil injected in the longitudinal direction of the piston 141 The piston is pressed and moved forward and backward. Here, the cylinder 150 may include a first inlet 151 and a second inlet 152.

The first inlet and outlet hole 151 may be formed to allow the oil to flow in front of the piston 141 so that the piston 141 is pushed rearward. 151 may be provided.

The second inlet and outlet hole 152 may be formed such that the oil flows into the rear of the piston 141 so that the piston 141 is pushed forward and the second inlet and outlet holes 152 may be provided.

The push-pull hub 140 moves in the front-rear direction by the piston 141 moved by the oil flow, and the pitch angle of the propeller 110 is changed.

An unillustrated reference numeral 161 is a flexible coupling, and a detailed description thereof will be omitted in a general configuration.

Hereinafter, the operation of the pitch angle variation of the propeller 110 will be described.

First, as shown in Figs. 1 and 2, the piston 141 is pressed forward so as to increase the pitch angle of the propeller 110. As shown in Fig. To this end, oil is injected into the second inlet / outlet hole 152 of the cylinder 150 to increase the amount of oil behind the piston 141, thereby reducing the amount of oil in front of the piston 141 through the first inlet / .

The amount of oil behind the piston 141 increases and the piston 141 is pushed forward by the pressure of the oil and the push-pull hub 140 provided with the piston 141 moves forward. At this time, the pitch angle of the propeller 110 may be increased by rotating the crank disk 111 provided in the CPP hub 120.

On the other hand, as shown in Figs. 3 and 4, the piston 141 is pressed backward so that the pitch angle of the propeller 110 is reduced. To this end, the amount of oil in front of the piston 141 is increased through the first inlet / outlet hole 151 of the cylinder 150, the oil is discharged to the second inlet / outlet hole 152, .

The amount of oil in front of the piston 141 increases and the piston 141 is pushed backward by the pressure of the oil and the push-pull hub 140 provided with the piston 141 moves backward. At this time, the pitch angle of the propeller 110 may be reduced by rotating the crank disk 111 provided at the CPP hub 120.

As described above, according to the present embodiment, the structure can be simplified by adjusting the pitch angle of the propeller 110 according to the inflow and outflow of oil, and a push-pull hub 140 for adjusting the pitch angle of the propeller 110, Is provided at the rear end of the gear box 170 and is provided outside the gear box 170 so that the gear structure inside the gear box 170 is not interfered with, so that the structure can be simplified.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the present invention. It is obvious that the modification and the modification are possible.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100: propeller pitch angle adjustment system 110: propeller
111: crank disk 120: CPP hub
130: Propeller shaft 131, 132: Flange
130A: Second axis 130B: First axis
140: Push-pull hub 141: Piston
144: Oil line 150: Cylinder
151: first inlet / outlet hole 152: second inlet / outlet hole
160: power source 170: gear box

Claims (5)

Propeller shaft;
A push-pull hub slidably provided on an outer side of the propeller shaft, the pusher hub including a piston projecting in a vertical direction and a rear end connected to a propeller to adjust a pitch angle of the propeller; And
And a cylinder provided on an outer side of the push-pull hub to allow the piston to pass therethrough, the oil being flowed in and out of the cylinder to move the piston in the forward and backward directions. The apparatus as claimed in claim 1,
A first inlet and outlet hole through which oil flows into the front of the piston so that the piston is pushed rearward and a second inlet and outlet hole through which oil flows into the rear of the piston so that the piston is pushed forward, Pitch angle adjustment system. The method according to claim 1,
Further comprising a CPP hub on which the propeller is provided,
The CPP hub includes:
And a rear end of the push-pull hub is connected to the propeller, and a rear end of the hub is connected to a rear end of the propeller shaft. The method according to claim 1,
Wherein the push-pull hub is provided with an oil line passing through the propeller shaft so that the oil passes between the propeller shaft and the propeller shaft. 2. The propeller shaft according to claim 1,
A first shaft provided at a front side; And
And a second shaft provided behind the first shaft and having a smaller diameter than the first shaft, wherein the second shaft is slidably supported by the push-pull hub.
KR1020140152813A 2014-11-05 2014-11-05 Apparatus of blade pitch control for ship KR20160054104A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140152813A KR20160054104A (en) 2014-11-05 2014-11-05 Apparatus of blade pitch control for ship

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140152813A KR20160054104A (en) 2014-11-05 2014-11-05 Apparatus of blade pitch control for ship

Publications (1)

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KR20160054104A true KR20160054104A (en) 2016-05-16

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KR1020140152813A KR20160054104A (en) 2014-11-05 2014-11-05 Apparatus of blade pitch control for ship

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113799952A (en) * 2021-08-20 2021-12-17 中国船舶重工集团公司第七0四研究所 Oil distribution sealing device with cooling function for controllable pitch propeller
CN113859495A (en) * 2021-09-30 2021-12-31 中国船舶重工集团公司第七0四研究所 Controllable pitch propeller hub suitable for high navigational speed

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113799952A (en) * 2021-08-20 2021-12-17 中国船舶重工集团公司第七0四研究所 Oil distribution sealing device with cooling function for controllable pitch propeller
CN113859495A (en) * 2021-09-30 2021-12-31 中国船舶重工集团公司第七0四研究所 Controllable pitch propeller hub suitable for high navigational speed

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