CN107150771B

CN107150771B - Fin stabilizer actuating mechanism capable of realizing large rotating fin angle

Info

Publication number: CN107150771B
Application number: CN201710574911.9A
Authority: CN
Inventors: 毛杨军; 邓启亮; 彭杉; 牛远振; 何彩繁
Original assignee: Shanghai Hunter Marine Equipment Co ltd
Current assignee: Shanghai Hunter Marine Equipment Co ltd
Priority date: 2017-07-14
Filing date: 2017-07-14
Publication date: 2023-04-07
Anticipated expiration: 2037-07-14
Also published as: CN107150771A

Abstract

The invention relates to a fin stabilizer actuating mechanism capable of realizing a large rotating fin angle, wherein a gear rack cylinder is arranged at the front end of a supporting seat and is connected with a fin shaft group arranged at the rear end of the supporting seat, two cylindrical racks and a gear shaft of the gear rack cylinder are integrated in a box body, a hollow gear shaft is connected with the fin shaft group through a key, the two cylindrical racks are arranged at the upper end and the lower end of the gear shaft and are meshed with the gear shaft, the two ends of the cylindrical racks are respectively arranged in cylinder barrels fixed at the two sides of the box body and form diagonal double-tooth cavities, the diagonal double-tooth cavities are connected to a driving source hydraulic unit through an oil pipe, and the two cylindrical racks transmit hydraulic pressure to the gear shaft through gear meshing, so that the reciprocating linear motion of the cylindrical racks is converted into the swinging of the fin shaft group. The mechanism has a simple and compact structure, can obviously reduce the cabin space occupied by the executing mechanism, has a working angle of +/-65 degrees, meets the corner requirement in zero navigational speed, ensures a good anti-rolling effect, and greatly improves the reliability of the system.

Description

Fin stabilizer actuating mechanism capable of realizing large rotating fin angle

Technical Field

The invention relates to equipment for reducing rolling motion of a boat, in particular to a zero-navigational-speed fin stabilizer, and belongs to the technical field of fin stabilizer actuating mechanisms.

Background

The existing fin stabilizer device can provide various stabilizer configuration schemes for various ships, the technology is relatively mature, and the ship has a good stabilizer requirement at a medium/high speed, but the stabilizer requirement of the ship at a low speed or even at a zero speed is increasingly urgent in recent years.

Most of foreign zero-speed fin stabilizer manufacturers mostly adopt a solution scheme of improving the existing fin stabilizer on the basis of the existing fin stabilizer to enable the fin stabilizer to have full-speed fin stabilizer capability, namely, the fin stabilizer adopts a conventional working mode at medium/high speed, and is called as a common fin stabilizer; at zero cruise, the fin switches to zero cruise mode, referred to as a zero cruise fin. Although the common stabilizer fin is taken into consideration in the design, only one set of equipment needs to be designed and maintained, the cost and the volume are not greatly increased, the design is limited by the fact that the actuating mechanisms of the stabilizer fin all adopt the driving structures of crank connecting rods, the maximum working angle of the stabilizer fin which can be achieved is only insufficient in the congenital range of +/-40 degrees, the stabilizing effect of zero navigational speed is limited, the stabilizing requirement of ships at low navigational speed or even at zero navigational speed can not be met, the structure is complex, the weight and the occupied cabin space are large, and the difficulty is brought to the limited cabin space arrangement.

Disclosure of Invention

In order to overcome the defect of insufficient fin rotating angle of an actuating mechanism of the existing fin stabilizer device, the invention provides the fin stabilizer actuating mechanism capable of realizing a large fin rotating angle, the fin shaft is directly driven to rotate through a double-rack cylinder of a gear to drive the fins to rapidly swing at a large angle, and the zero-speed stabilizing is realized.

In order to achieve the purpose, the technical scheme of the invention is as follows: a fin stabilizer actuating mechanism capable of realizing a large rotating fin angle comprises a fin shaft group, a supporting seat, a gear rack cylinder, a locking mechanism, a fin angle transmitter and a control valve group, wherein the gear rack cylinder is installed at the front end of the supporting seat and connected with the fin shaft group installed at the rear end of the supporting seat and used for driving the fin shaft group to rotate, and the gear rack cylinder consists of a box body, a cylindrical rack, a cylinder barrel, a self-lubricating bushing and a gear shaft; two cylindrical racks and a gear shaft are integrated in the box, the gear shaft is connected with the fin shaft group, the two cylindrical racks are arranged in parallel and are symmetrically distributed on two sides of the gear shaft respectively and are connected with the gear shaft in a meshed mode, two ends of each cylindrical rack are arranged in the cylinder barrels fixed on two sides of the box respectively and form diagonal double-tooth cavities, the diagonal double-tooth cavities are connected to the driving source hydraulic unit through oil pipes, the two cylindrical racks transmit hydraulic pressure to the gear shaft through gear meshing, the hydraulic pressure is converted into torque output, and reciprocating linear motion of the cylindrical racks is converted into swing of the fin shaft group.

The supporting seat consists of an upper supporting seat and a lower supporting seat, the lower supporting seat supports the fin shaft group, a control valve group is arranged right above the upper supporting seat, a locking mechanism is arranged right below the upper supporting seat, the control valve group is connected to a driving source hydraulic unit, and the hydraulic unit is driven under the control of an electric control system to control the moving length of two cylindrical racks of the gear rack cylinder relative to the linear motion through the control valve group so as to realize the arbitrary fin rotating angle of the fin shaft group.

And a self-lubricating bushing is arranged between the inner side of the box body and the cylindrical rack and is used for bearing the component force of the meshing force of the gear and the rack along the axis perpendicular to the rack, reducing the deflection of the rack shaft and ensuring the sealing performance and the service life of pistons at two ends of the rack.

The fin shaft group consists of a fin shaft, a shaft sleeve, a large bearing, a small bearing and a retainer ring, the large bearing and the small bearing are arranged on the fin shaft, and a gear rack cylinder is arranged on the fin shaft positioned on the outer side of the small bearing and is positioned at the free end of the fin shaft.

The upper supporting seat is a circular flange with a small height-to-radial ratio and is used for providing a mounting platform for the gear rack cylinder, the locking mechanism and the control valve bank, and a rib plate is arranged on the inner side of the upper supporting seat and used for reinforcing the structural strength of the upper supporting seat and limiting the structural strength of the upper supporting seat as a side plate movement mechanism, namely the mechanical limit of the whole actuating mechanism.

The invention has the beneficial effects that:

in order to realize large-angle operation of the actuating mechanism, the invention introduces a gear rack cylinder to be directly connected with the fin shaft to replace a method that a double-linear cylinder of the existing actuating mechanism is indirectly connected with the fin shaft through a fin handle, and the fin rotating angle of the actuating mechanism is determined by the length of a rack; in order to reduce the space occupied by the cabin and optimize the structural form of the fin shaft group supporting, a supporting seat structure, a limiting device and the like are newly designed.

The executing mechanism mainly comprises a fin shaft group, a seawater sealing device, a side plate, a supporting seat, a gear rack cylinder, a locking mechanism, a fin angle transmitter, a control valve group and the like. The hydraulic press unit is driven to work under the control of the electric control system, the double rack cavities of the rack cylinder move linearly relatively through the control valve unit, the fin shaft is driven to rotate through the gear-rack meshing pair through the gear and the fin shaft connecting spline, the double racks and the gear are integrated into one oil cylinder, and the random fin rotating angle is achieved by changing the moving length of the rack.

Compared with the prior executing mechanism, the fin rotating angle can be increased from 40 degrees to 65 degrees or more, and any fin rotating angle is realized by changing the moving length of the rack; the original double-linear cylinder and fin handle driving mechanism is simplified into an integrated gear rack cylinder, so that the number of parts is obviously reduced, the space occupied by the parts is effectively reduced, and particularly, the axial height can be reduced by 20 percent, thereby being beneficial to the installation and maintenance of an actuating mechanism in a cabin; the gear rack cylinder is arranged at the free end of the fin shaft, so that the influence of deformation on the performance and the service life of the oil cylinder is reduced; the structure is compact, the weight is reduced by 20%, and the method has certain technical progress and economic benefit.

Drawings

FIG. 1 is a schematic diagram of a fin stabilizer actuator capable of achieving a large fin rotation angle;

FIG. 2 is a left side view of FIG. 1;

FIG. 3 is a schematic structural diagram of an integrated rack and pinion cylinder;

FIG. 4 is a perspective view of the upper supporting base;

FIG. 5 is a plan view of the upper support base;

FIG. 6 is a schematic view of a fin axis set structure.

Detailed Description

The invention is further described with reference to the following figures and examples.

As shown in fig. 1 to 6, the fin stabilizer actuator capable of realizing a large fin rotation angle mainly comprises a fin shaft group 1, a support base, a fin angle transmitter 4, a locking mechanism 5, a seawater sealing device 6, a gear and rack cylinder 7, a control valve group 8 and the like.

The gear rack cylinder 7 is arranged at the front end of the supporting seat, is connected with the fin shaft group 1 arranged at the rear end of the supporting seat and is used for driving the fin shaft group 1 to rotate, and the gear rack cylinder 7 consists of a box body 71, a cylindrical rack 72, a cylinder barrel 73, a self-lubricating set 76 and a gear shaft 77; two cylindrical racks 72 and a gear shaft 77 are integrated in the box body 71, the gear shaft 77 is connected with the fin shaft group 1, the two cylindrical racks 72 are respectively arranged at the upper end and the lower end of the gear shaft 77 and are meshed with the gear shaft 77, the two ends of the cylindrical racks 72 are respectively arranged in the cylinder barrels 73 fixed at the two sides of the box body 71 and form diagonal double-tooth cavities, the diagonal double-tooth cavities are connected with and drive the hydraulic unit through oil pipes, the two cylindrical racks 72 transmit hydraulic pressure to the gear shaft 77 through gear meshing and are converted into torque output, and reciprocating linear motion of the cylindrical racks 72 is converted into swing of the fin shaft group 1. The control valve group 8 is connected with the driving hydraulic unit, the driving hydraulic unit is connected with the electric control system, and the electric control system controls the moving length of the two cylindrical racks 72 of the gear rack cylinder 7 relative to the linear motion through the driving hydraulic unit and the control valve group 8 so as to realize the arbitrary fin rotating angle of the fin shaft group 1.

The supporting seat is divided into two parts, namely an upper supporting seat 3 and a lower supporting seat 2, the lower supporting seat 2 plays a role in supporting the fin shaft group 1, matching with a hull base and transmitting the force on the fins to the hull through the base, and the like, and the upper supporting seat 3 provides a platform for the fin angle transmitter 4, the locking mechanism 5, the gear and rack cylinder 7, the control valve group 8 and the like. The split design of the supporting seat simplifies the structure and is convenient to process and install. The gear rack cylinder 7 is used as a power element to directly drive the fin shaft group 1, the seawater sealing device 6 is in bolted connection with the lower end face of the lower support seat 2 to prevent seawater from entering the cabin along the path of the fin shaft group 1, and the locking mechanism 5 is used for keeping the equipment at a zero position in a non-working state of the actuating mechanism.

As shown in fig. 3, the integrated rack-and-pinion cylinder 7 is composed of a case 71, a rack bar 72, a cylinder 73, an oil pipe joint 74, upper and lower end caps 75, a self-lubricating set 76, a pinion shaft 77, and the like. Two cavities at the opposite corners are connected with an oil pipe, the two cylindrical racks 72 transmit hydraulic pressure to the gear shaft 77 through gear meshing, the hydraulic pressure is converted into torque output, the reciprocating linear motion of the cylindrical racks 72 is converted into the swing of the fin shaft group 1, and the swing angle can be adjusted by changing the moving length of the cylindrical racks. The two cylindrical racks 72 and the gear shaft 77 are integrated in the box body 71, the inner cavity of the box body is filled with lubricating grease, the structure is compact, the lubrication of the meshing pair is ensured, and the reliability of the meshing pair is improved. The self-lubricating bushing 76 is arranged between the inner side of the box body 71 and the cylindrical rack 72 and is used for bearing component force of gear and rack meshing force along the direction perpendicular to the axis of the rack, so that motion guiding and lubricating of the cylindrical rack 72 are achieved, and influence of deflection deformation of the cylindrical rack 72 on piston sealing rings at two ends of the cylindrical rack 72 is reduced.

As shown in fig. 4 and 5, the upper bearing support 3 provides a mounting platform for the rack and pinion cylinder 7, the locking mechanism 5, the control valve group 8 and the like, the groove 31 and the hole a32 are used for positioning the rack and pinion cylinder, two side surfaces 36 of the groove 31 are used for bearing the output torque of the cylinder and transmitting the output torque to the upper bearing support 3, the hole B33 is used for mounting the locking mechanism 5, and the upper bearing support 3 and the lower bearing support 2 are connected through the screw hole 34 and the pin hole 35 to finally transmit the output torque of the cylinder to the ship body. The locking mechanism 5, the fin angle transmitter 4, the control valve group 8 and the like are all positioned right above the upper support base 3, so that sufficient installation and maintenance space is ensured in a small cabin space. The rib plate 38 is used for reinforcing the structural strength of the upper bearing pedestal 3, reducing the influence of deformation caused by the weight of the gear rack cylinder 7 and the like on a gear meshing pair, and simultaneously limiting the movement of the side plate 37, namely the mechanical limit of the whole actuating mechanism.

As shown in fig. 6, the fin shaft group 1 is composed of a fin shaft 11, a shaft sleeve 12, a large bearing 13, a small bearing 14, a retainer ring 15, and the like. The distance between the large bearing 13 and the small bearing 14 is shortened, the fit clearance between the bearings and the lower bearing seat 2 is limited, the rack-and-pinion cylinder 7 is arranged outside the two bearings, the sufficient stress strength of the fin shaft 11 is ensured, the influence of deflection deformation of the fin shaft 11 on the strength and the sealing performance of the rack-and-pinion cylinder 7 is effectively avoided, the axial size of the whole actuating mechanism can be obviously reduced, the cabin space is improved, and the arrangement in the limited cabin space is facilitated.

Claims

1. A fin stabilizer actuating mechanism capable of realizing a large rotating fin angle comprises a fin shaft group (1), a supporting seat, a gear rack cylinder (7), a locking mechanism (5), a fin angle transmitter (4) and a control valve group (8), wherein the gear rack cylinder (7) is installed at the front end of the supporting seat and connected with the fin shaft group (1) installed at the rear end of the supporting seat and used for driving the fin shaft group (1) to rotate, and the gear rack cylinder (7) consists of a box body (71), a cylindrical rack (72), a cylinder barrel (73), a self-lubricating bushing (76) and a gear shaft (77); two cylindrical racks (72) and a gear shaft (77) are integrated in the box body (71), the gear shaft (77) is connected with the fin shaft group (1), the two cylindrical racks (72) are arranged in parallel and are symmetrically distributed on two sides of the gear shaft (77) respectively and are meshed with the gear shaft (77), two ends of each cylindrical rack (72) are arranged in the cylinder barrels (73) fixed on two sides of the box body (71) respectively and form diagonal double-tooth cavities, the diagonal double-tooth cavities are connected to a driving source hydraulic unit through oil pipes, the two cylindrical racks (72) transmit hydraulic pressure to the gear shaft (77) through gear meshing and are converted into torque to be output, and reciprocating linear motion of the cylindrical racks (72) is converted into swing of the fin shaft group (1).

2. The fin stabilizer actuator according to claim 1, wherein the fin stabilizer actuator is configured to: the supporting seat is composed of an upper supporting seat (3) and a lower supporting seat (2), the lower supporting seat (2) supports the fin shaft set (1), a control valve group (8) is installed right above the upper supporting seat (3), a locking mechanism (5) is installed right below the upper supporting seat, the control valve group (8) is connected to a driving source hydraulic unit, and the control valve group (8) controls the moving length of two cylindrical racks (72) of the gear rack cylinder (7) relative to linear motion to achieve the arbitrary fin rotating angle of the fin shaft set (1) under the control of an electric control system.

3. The fin stabilizer actuator capable of achieving a large fin rotation angle according to claim 1, wherein: a self-lubricating bushing (76) is arranged between the inner side of the box body (71) and the cylindrical rack (72) and is used for bearing component force of meshing force of the gear and the rack along the direction perpendicular to the axis of the rack, reducing deflection of a rack shaft and ensuring sealing performance and service life of pistons at two ends of the rack.

4. The fin stabilizer actuator capable of achieving a large fin rotation angle according to claim 1, wherein: the fin shaft group (1) consists of a fin shaft (11), a shaft sleeve (12), a large bearing (13), a small bearing (14) and a retainer ring (15), wherein the large bearing (13) and the small bearing (14) are arranged on the fin shaft (11), and a gear rack cylinder (7) is arranged on the fin shaft (11) positioned on the outer side of the small bearing (14) and is positioned at the free end of the fin shaft.

5. The fin stabilizer actuator capable of achieving a large fin rotation angle according to claim 2, wherein: the upper supporting seat (3) is a circular flange with a small height-to-radial ratio and is used for providing a mounting platform for the gear rack cylinder (7), the locking mechanism (5) and the control valve group (8), and a rib plate (38) is arranged on the inner side of the upper supporting seat (3) and is used for reinforcing the structural strength of the upper supporting seat (3) and limiting the movement of the side plate (37), namely the mechanical limit of the whole actuating mechanism.