JP2017043195A - Steering apparatus and sailing body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase state of silence during operation of a steering apparatus.SOLUTION: A steering apparatus 10A comprises: a steering shaft 11 supported on a sailing body rotatably on a center axis; a steering plate 12 fixed to the steering shaft 11 and rotating integrally with the steering shaft 11; a rope body 22R having one end fixed to the steering shaft 11, extending to one peripheral side of the center axis, and having flexibility; a rope body 22L having one end fixed to the steering shaft 11, extending to the other peripheral side of the center axis, and having flexibility; and a driving part D which drives and rotates the steering shaft 11 by drawing one of the other end of the rope body 22R and the other end of the rope body 22L selectively.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a steering device and a traveling body.

  A traveling body such as a ship controls the traveling direction by changing the direction of the steering plate with a steering device provided at the rear of the traveling body.

Patent Document 1 discloses a steering machine including a rudder plate provided on a rudder shaft rotatably supported by a traveling body and a drive mechanism including a hydraulic actuator for rotating the rudder shaft. Has been.
The steering mechanism drive mechanism is provided integrally with the rudder shaft, a chiller having a U-shaped recess extending from the rudder shaft to the outer peripheral side, and a drive provided in the hydraulic actuator and disposed in the recess of the chiller. And a pin. When the hydraulic actuator is operated and the drive pin in the recess is linearly moved, the chiller is pressed in the circumferential direction (tangential direction) of the rudder shaft, and the rudder shaft rotates. As a result, the rudder plate rotates integrally with the rudder shaft, and the traveling direction of the traveling body changes.

Japanese Patent No. 5232870

However, the above-described steering machine has a clearance between the inner peripheral surface of the recess of the chiller and the outer peripheral surface of the drive pin. Therefore, every time the hydraulic actuator is operated, an operating sound is generated in which the chiller and the drive pin collide.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a steering device and a traveling body that can improve silence during operation.

The present invention employs the following means in order to solve the above problems.
According to the first aspect of the present invention, the steering device includes a rudder shaft that is supported by the traveling body so as to be rotatable about a central axis, and a rudder plate that is fixed to the rudder shaft and rotates integrally with the rudder shaft. The one end is fixed to the rudder shaft, extends to one side in the circumferential direction of the central axis, and has a flexible first cable body, and one end is fixed to the rudder shaft, and the circumferential direction of the central axis The rudder axle is driven to rotate by selectively pulling one of the second cable body having flexibility while extending to the other side and the other end of the first cable body and the other end of the second cable body. And a drive unit to be operated.

  In this way, by selectively pulling the first rope body or the second rope body and rotating the rudder shaft, it is possible to suppress the occurrence of operation noise due to collision of members constituting the steering device during operation. .

According to the second aspect of the present invention, in the steering device, the drive unit in the first aspect has a first cylinder that pulls the first cable body, a second cylinder that pulls the second cable body, and the first cylinder. And a working fluid supply unit that selectively supplies the working fluid to one of the second cylinder and the second cylinder.
In this way, by selectively sending the working fluid from the working fluid supply unit to the first cylinder or the second cylinder, the first cylinder or the second cylinder into which the working fluid is fed is operated, and the first cord body or the second cylinder is operated. By pulling the two cords, the rudder shaft can be rotated in a desired direction.

According to a third aspect of the present invention, in the steering device, the working fluid supply unit according to the second aspect includes a working fluid supply cylinder having a piston that feeds the working fluid therein, a linear motion mechanism that moves the piston, And an electric motor that drives the linear motion mechanism.
With this configuration, when the feed linear movement mechanism is driven by the electric motor, the piston moves in the working fluid supply cylinder, and the working fluid can be selectively sent to the first cylinder or the second cylinder.

According to a fourth aspect of the present invention, the steering device may further include an electric motor that rotates the rudder shaft about the central axis in any one of the first to third aspects.
With this configuration, the rudder shaft can be driven to rotate by an electric motor in addition to rotating the rudder shaft by pulling the first and second cords at the drive unit. Thereby, if a drive part and an electric motor are operated simultaneously, each output can be made small. Moreover, when either one of a drive part and an electric motor breaks down, the rudder axis | shaft can be rotationally driven by operating the other. This improves the redundancy of the steering device.

According to a fifth aspect of the present invention, in the fourth aspect, the steering device may include a case that houses the electric motor and a fluid that is sealed in the case.
By comprising in this way, even when an electric motor is arrange | positioned outside the traveling body main body, it can suppress that the operating sound which arises with an electric motor leaks outside.

According to the sixth aspect of the present invention, the traveling body includes a traveling body main body and the steering device according to any one of the first to fifth aspects provided in the traveling body main body.
By configuring in this way, the traveling body can suppress the generation of operating noise when the steering device is operated.

According to a seventh aspect of the present invention, the traveling body includes a traveling body main body, and the steering device according to the second or third aspect provided in the traveling body main body, and the drive unit is at least The working fluid supply unit is provided in the navigation body.
In this way, by disposing at least the working fluid supply unit in the traveling body main body, it is possible to suppress leakage of these operating sounds to the outside of the traveling body main body.

  According to the steering device and the traveling body according to the present invention, it is possible to improve the quietness when the steering device is operated.

It is a perspective view which shows the structure of the rear part of the navigation body provided with the steering device which concerns on 1st, 2nd embodiment of this invention. It is a plane sectional view of the steering device in the first embodiment. It is a side view of the steering device. It is a plane sectional view of the steering device in the second embodiment. It is a side view of the steering device.

Hereinafter, a steering apparatus and a traveling body according to embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
FIG. 1 is a perspective view showing a configuration of a rear portion of a traveling body including a steering device according to a first embodiment of the present invention. FIG. 2 is a plan sectional view of the steering device. FIG. 3 is a side view of the steering device.
As shown in FIG. 1, the traveling body 1 of this embodiment includes a traveling body main body 2, a propulsion device 3 provided at a rear portion 2b of the traveling body main body 2, and a steering device 10A.

  The propulsion device 3 is, for example, a propeller 4 and is provided at the rear portion 2 b of the traveling body main body 2. The propeller 4 includes a propeller shaft 4s that penetrates the inside and outside of the traveling body 2 and is rotatably provided, and a plurality of wings 4w that are provided at the rear end of the propeller shaft 4s. The propeller shaft 4s is rotationally driven by a drive source (not shown) provided in the navigation body main body 2. As the propeller shaft 4s rotates, the plurality of blades 4w turn to generate propulsive force in the traveling body main body 2.

  The steering device 10 </ b> A is disposed in the rear portion 2 b of the traveling body main body 2. As shown in FIGS. 2 and 3, the steering device 10 </ b> A is disposed behind the rudder shaft 11 that is rotatably supported by the traveling body 2 and the propeller 4 (see FIG. 1). A rudder plate 12 provided integrally and a drive mechanism 20A for rotating the rudder shaft 11 are provided.

  The rudder shaft 11 penetrates the inside and outside of the traveling body main body 2, and the base end portion 11 a is supported so as to be rotatable around the central axis C in the traveling body main body 2. The rudder shaft 11 protrudes outward from the traveling body main body 2, and a tip end portion 11 b of the rudder shaft 11 is integrally fixed to the rudder plate 12.

  The drive mechanism 20A includes a connection member 21 provided integrally with the rudder shaft 11, a cable body (first cable body) 22R connected to the connection member 21, a cable body (second cable body) 22L, and a cable And a drive unit D that drives the bodies 22R and 22L.

  The connection member 21 is provided outside the traveling body 2 so as to project from the rudder shaft 11 to the outer peripheral side perpendicular to the central axis C of the rudder shaft 11 (see FIG. 3). The connecting member 21 in this embodiment protrudes on the opposite side of the traveling body 2 with the rudder shaft 11 in between.

  The cords 22R and 22L are made of flexible linear or belt-like members such as chains, belts, and wires. The ropes 22R and 22L are provided in pairs on both sides of the rudder shaft 11. One end 22a of one rope 22R is connected to one side in the circumferential direction of the rudder shaft 11 with respect to the connecting member 21, and one end 22a of the other rope 22L is connected to the circumference of the rudder shaft 11 with respect to the connecting member 21. Connected to the other side of the direction. That is, the two pairs of cords 22R and 22L are connected to the connecting member 21 from both sides in the circumferential direction. The ropes 22R and 22L in this embodiment are formed to have the same length and are arranged so as to be symmetrical with respect to the rudder shaft 11 when the traveling body 1 goes straight.

  The drive unit D includes a rope drive actuator (first cylinder) 23R that pulls the ropes 22R and 22L, a rope drive actuator (second cylinder) 23L, and an actuator drive unit that operates the rope drive actuators 23R and 23L. (Working fluid supply unit) 24.

The rope drive actuators 23R and 23L are provided outside the traveling vehicle body 2. Each of the rope drive actuators 23R and 23L is provided integrally with the cylindrical cylinder 23a, the piston 23b provided to be movable in the central axis direction of the cylinder 23a in the cylinder 23a, and the piston 23b. And a drive rod 23c that penetrates and projects to the outside.
The cord drive actuators 23R and 23L are provided corresponding to the two pairs of cords 22R and 22L, respectively, and the other end 22b of the cords 22R and 22L is connected to the tip of the drive rod 23c. . Such cord drive actuators 23R and 23L are arranged on the opposite side of the connecting member 21 with the rudder shaft 11 in between.

  The actuator drive unit 24 is provided inside the navigation body main body 2. The actuator drive unit 24 includes a cylinder type pump unit (working fluid supply cylinder) 25 that supplies hydraulic oil to the cord body drive actuators 23R and 23L, and a pump drive unit 30 that drives the cylinder type pump unit 25.

  The cylinder-type pump unit 25 includes a cylindrical cylinder 27 and a piston 28 provided in the cylinder 27 so as to be movable in the central axis direction of the cylinder 27. The cylinder 27 is filled with hydraulic oil 26 in an oil chamber 27R on one side of the piston 28 and an oil chamber 27L on the other side. Connection pipes 29R and 29L communicating with the oil chambers 27R and 27L are connected to the cylinder 27. These connection pipes 29R and 29L penetrate the traveling body main body 2 and extend outside the traveling body main body 2. One connection pipe 29R is connected to a cylinder 23a of one rope drive actuator 23R, and the other connection pipe 29L is connected to a cylinder 23a of the other rope drive actuator 23L.

  The pump drive unit 30 includes a guide member 31, a bracket 32, a feed screw 33, a nut portion 34, a motor 35, and a piston rod 36.

  The guide member 31 is fixed to the plate-like base member 37 and is provided so as to extend in a direction orthogonal to the base member 37. A plurality of guide members 31 are provided in parallel to each other.

  A plurality of guide members 31 are inserted into the bracket 32 and are slidable along the guide members 31.

  The feed screw 33 is rotatably supported on the base member 37 via a bearing (not shown). The feed screw 33 is provided in parallel with the plurality of guide members 31. The feed screw 33 has a spiral thread groove (not shown) formed on the outer peripheral surface.

  The nut portion 34 is integrally fixed to the center portion of the bracket 32. The nut portion 34 is screwed into a thread groove (not shown) of the feed screw 33. When the feed screw 33 rotates around the central axis, the nut portion 34 and the bracket 32 slide along the feed screw 33.

  The motor 35 is fixed to the base member 37 and rotates the feed screw 33 around its central axis.

  The piston rod 36 is provided integrally with the bracket 32, extends toward the cylinder-type pump portion 25, and has a cylindrical portion 36a in which a feed screw 33 is disposed, and a plate portion 36b that covers the tip of the cylindrical portion 36a. And a rod 36c fixed to the plate portion 36b and extending toward the cylinder-type pump portion 25 side. The rod 36 c penetrates the cylinder 27 and is fixed to the piston 28 in the cylinder 27.

  In such a drive part D, the motor 35 is operated and the feed screw 33 is rotated around the central axis. Then, the bracket 32 moves in the direction of the central axis of the feed screw 33 together with the nut portion 34 screwed into the feed screw 33. By moving the bracket 32, the piston rod 36 slides in the cylinder 27 of the cylinder type pump unit 25, and the piston 28 slides in the central axis direction of the cylinder 27.

  Then, the volume of the oil chambers 27R and 27L is reduced by the sliding of the piston 28. The hydraulic oil 26 in the oil chamber 27R is discharged from the cylinder 27 at the front side in the movement direction of the piston 28, for example, the oil chamber 27R. The discharged hydraulic oil 26 is sent to the cylinder 23a of the one rope drive actuator 23R through the connection pipe 29R, whereby the piston 23b and the drive rod 23c of the one rope drive actuator 23R are placed in the cylinder 23a. The cord 22R is pulled by the drive rod 23c.

  On the other hand, in the oil chamber 27R and the oil chamber 27L, in the rear side in the moving direction of the piston 28 whose volume is increased by the sliding of the piston 28, for example, in the oil chamber 27L, the hydraulic oil 26 is supplied to the oil chamber 27L via the connection pipe 29L. Pull inside. As a result, the piston 23b of the other rope drive actuator 23L causes the drive rod 23c to protrude from the cylinder 23a and feeds the rope 22L.

  If the feed screw 33 is rotated reversely by the motor 35, the piston 28 moves in the opposite direction to the above, and the drive rod 23c of the cord drive actuator 23L is pulled into the cylinder 23a to pull the cord 22L and drive the cord. The drive rod 23c of the actuator 23R protrudes from the cylinder 23a and feeds the rope 22R.

  In this way, the connection member 21 provided on the rudder shaft 11 has one of the ropes 22R and 22L pulled to one side in the circumferential direction, and the other of the ropes 22R and 22L is the other in the circumferential direction. The rudder shaft 11 rotates about the central axis C by being extended to the side. That is, the direction of rotation of the rudder shaft 11 is selectively switched according to the direction of rotation of the feed screw 33 that is rotationally driven by the motor 35. That is, the guide member 31, the bracket 32, the feed screw 33, the nut portion 34, and the piston rod 36 of this embodiment constitute a linear motion mechanism of the present invention.

  The turning operation of the rudder shaft 11 as described above is controlled by a controller (not shown). The controller (not shown) includes a sensor (not shown) that detects the position of the rudder shaft 11 or the rudder plate 12 in the rotational direction, and receives a position detection signal of the rudder shaft 11 or the rudder plate 12 output from the sensor. A controller (not shown) controls the operation of the motor 35 based on the received detection signal, and rotates the rudder shaft 11 so that the rudder angle is input from the outside.

  Therefore, according to the steering device 10A and the traveling body 1 of the first embodiment described above, the cord body drive is performed by selectively pulling the cord body 22R or the cord body 22L, due to the flexibility of the cord bodies 22R and 22L. The linear motion of the actuator 23R and the rope drive actuator 23L is converted into a circular motion that rotates the rudder shaft 11, and the rudder shaft 11 is rotationally driven. Therefore, it can suppress that the member which comprises 10 A of steering apparatuses collides at the time of an operation | movement, and an operation sound arises. As a result, it is possible to improve the quietness when the steering device 10A is operated.

  Furthermore, by disposing at least the actuator drive unit 24 in the traveling body main body 2 in the drive unit D, it is possible to prevent these operating sounds from leaking out of the traveling body main body 2.

  Further, the rope 22R is provided on one side in the circumferential direction of the rudder shaft 11, the rope 22L is provided on the other side, and the other of the ropes 22R and 22L is pulled while being pulled by one of the ropes 22R and 22L. , The rudder shaft 11 is rotationally driven. As a result, the rudder shaft 11 and the rudder plate 12 can be stably rotated.

(Second embodiment)
Next, a second embodiment of the steering device and the traveling body according to the present invention will be described. In the second embodiment described below, since only the configuration including the linear motor 40 is different from the first embodiment, FIG. 1 is used, and the same parts as those in the first embodiment are denoted by the same reference numerals. Will not be repeated.
FIG. 4 is a cross-sectional plan view of the steering device in the second embodiment. FIG. 5 is a side view of the steering device.
As shown in FIG. 1, the traveling body 1 of this embodiment includes a traveling body main body 2, a propulsion device 3 provided at a rear portion 2b of the traveling body main body 2, and a steering device 10B.

  As shown in FIGS. 4 and 5, the steering device 10 </ b> B includes a rudder shaft 11, a rudder plate 12, and a drive mechanism 20 </ b> B that rotationally drives the rudder shaft 11.

  The drive mechanism 20B includes a connection member 21 provided integrally with the rudder shaft 11, a cable body 22R, 22L connected to the connection member 21, and a drive unit D that drives the cable bodies 22R, 22L.

  The drive unit D includes rope driving actuators 23R and 23L and an actuator driving unit 24 that operates the rope driving actuators 23R and 23L.

  The rope drive actuators 23R and 23L are provided outside the traveling vehicle body 2. Each cord drive actuator 23R, 23L is provided corresponding to each of two pairs of cords 22R, 22L.

  The actuator drive unit 24 is provided inside the navigation body main body 2. The actuator drive unit 24 includes a cylinder type pump unit 25 that supplies hydraulic oil to the cord body drive actuators 23R and 23L, and a pump drive unit 30 that drives the cylinder type pump unit 25.

In the drive unit D, the motor 35 is operated to rotate the feed screw 33 around the central axis. Then, the bracket 32 moves in the direction of the central axis of the feed screw 33 together with the nut portion 34 screwed into the feed screw 33. By moving the bracket 32, the piston rod 36 slides in the cylinder 27 of the cylinder type pump unit 25, and the piston 28 slides in the central axis direction of the cylinder 27.
Thereby, one of the cord body driving actuators 23R and 23L is pulled, and the other cord 22R or 22R is pulled out.

  In this way, the connecting member 21 provided on the rudder shaft 11 has one of the ropes 22R and 22L pulled to one side in the circumferential direction, and the other of the ropes 22R and 22L is the other in the circumferential direction. The rudder shaft 11 is rotationally driven around the central axis C by being extended to the side. That is, the direction of rotation of the rudder shaft 11 is selectively switched according to the direction of rotation of the feed screw 33 that is rotationally driven by the motor 35.

The drive mechanism 20 </ b> B further includes a linear motion motor (electric motor) 40 provided coaxially with the rudder shaft 11.
The linear motor 40 has its output shaft connected directly to the rudder shaft 11 or indirectly via a speed reducer or the like.

  The linear motor 40 is accommodated in the case 41. A fluid 42 such as oil is sealed in the case 41. The case 41 may be formed of a pressure resistant container that does not deform when immersed in water, or a pressure equalizing container that equalizes the pressure inside the case 41 according to the surrounding water pressure. A part of the pressure equalizing vessel includes a compensator (not shown) that is elastically deformable in a bellows shape. As the compensator expands and contracts in accordance with the surrounding water pressure, the pressure inside and outside the case 41 is equalized. Thereby, it is possible to prevent the case 41 from being crushed and the fluid pressure in the case 41 from being excessively increased.

  In such a driving mechanism 20B, when the rudder shaft 11 is rotated, the driving unit D that selectively pulls the ropes 22R and 22L by rotating the feed screw 33 by the motor 35 and the rudder shaft 11 directly. The linear motor 40 that is rotationally driven may be operated simultaneously, or only one of them may be selectively operated.

  According to the steering device 10B and the traveling body 1 of the second embodiment described above, the steering device 10B includes the linear motion motor 40 that rotates the rudder shaft 11 around the central axis C. As a result, the rudder shaft 11 can be rotationally driven by the linear motor 40 in addition to pulling the rope body 22R and the rope body 22L to rotationally drive the rudder shaft 11. Thereby, if the motor 35 that rotationally drives the feed screw 33 and the linear motor 40 that directly drives the rudder shaft 11 to operate simultaneously, the respective outputs can be reduced. Furthermore, when either one of the drive part D and the linear motion motor 40 breaks down, the rudder axle 11 can be rotationally driven by operating the other. Thereby, the redundancy of the steering device 10B can be improved.

Further, as in the first embodiment, in the driving unit D, the steering shaft 11 is rotationally driven by selectively pulling the rope body 22R or the rope body 22L, so that members constituting the steering device 10A during operation are It is possible to suppress the occurrence of operation noise due to collision.
Furthermore, even when the rudder shaft 11 is rotationally driven by the direct acting motor 40, it is possible to suppress the occurrence of operating noise due to the members constituting the steering device 10A hitting during operation.
As a result, it is possible to improve the quietness when the steering device 10B is operated.

  Further, since the linear motion motor 40 is accommodated in a case 41 enclosing the fluid 42, even when the linear motion motor 40 is arranged outside the navigation body 2, the operation sound generated by the linear motion motor 40 is external. Can be prevented from leaking.

(Other variations)
The present invention is not limited to the above-described embodiment, and includes various modifications made to the above-described embodiment without departing from the spirit of the present invention. That is, the specific shapes, configurations, and the like given in the embodiment are merely examples, and can be changed as appropriate.
For example, in each of the above embodiments, the steering devices 10A and 10B are provided in the traveling body 1, but the installation position and the number of installations may be any.

  Furthermore, the shape and configuration of the traveling body main body 2 including the steering devices 10A and 10B are not limited to those illustrated.

Furthermore, in each embodiment mentioned above, the case where the working fluid was supplied to the rope drive actuator 23R and the rope drive actuator 23L by the working fluid supply unit 24 having one cylinder 27 and the piston 28 was described. However, the present invention is not limited to this configuration. For example, the working fluid may be supplied to the rope drive actuator 23R and the rope drive actuator 23L using a plurality of cylinders, pumps, or the like.
Furthermore, in each embodiment mentioned above, the case where the rope drive actuator 23R driven by a working fluid and the rope drive actuator 23L were used in order to pull the rope 22R, 22L was described. However, it is not limited to this configuration. For example, the cords 22R and 22L may be pulled using a method that does not use a working fluid, such as a magnetic force.

DESCRIPTION OF SYMBOLS 1 Navigation body 2 Navigation body main body 2b Rear part 3 Propulsion apparatus 4 Propeller 4s Propeller shaft 4w Wing | wing 10A, 10B Steering device 11 Rudder shaft 11a Base end part 11b Tip part 12 Rudder plate 20A, 20B Drive mechanism 21 Connection member 22R Rope body (First cord)
22L cord (second cord)
22a One end 22b The other end 23R Cable body drive actuator (first cylinder)
23L Cord drive actuator (second cylinder)
23a Cylinder 23b Piston 23c Drive rod 24 Actuator drive unit 25 Cylinder type pump part (working fluid supply cylinder)
26 Hydraulic oil 27 Cylinders 27R, 27L Oil chamber 28 Piston 29L Connection pipe 29R Connection pipe 30 Pump drive part 31 Guide member 32 Bracket 33 Feed screw 34 Nut part 35 Motor 36 Piston rod 36a Cylindrical part 36b Plate part 36c Rod 37 Base member 40 Linear motor (electric motor)
41 Case 42 Fluid C Center axis D Drive unit

Claims (7)

A rudder axle that is supported by the traveling body so as to be rotatable about a central axis;
A rudder plate fixed to the rudder shaft and rotating integrally with the rudder shaft;
One end is fixed to the rudder shaft, extends to one side in the circumferential direction of the central shaft, and has a flexible first rope body,
One end is fixed to the rudder shaft, extends to the other circumferential side of the central shaft, and has a flexible second rope body,
A drive unit that rotationally drives the rudder shaft by selectively pulling one of the other end of the first rope body and the other end of the second rope body;
A steering apparatus comprising: The drive unit is
A first cylinder for pulling the first cord body;
A second cylinder for pulling the second cord body;
A working fluid supply unit that selectively supplies a working fluid to one of the first cylinder and the second cylinder;
The steering apparatus according to claim 1, comprising: The working fluid supply unit includes:
A working fluid supply cylinder having a piston for delivering the working fluid therein;
A linear motion mechanism for moving the piston;
An electric motor that drives the linear motion mechanism;
The steering apparatus according to claim 2, comprising:   The steering apparatus according to any one of claims 1 to 3, further comprising an electric motor that rotationally drives the rudder shaft about the central axis. A case for housing the electric motor;
A fluid enclosed in the case;
The steering apparatus according to claim 4. The navigation body,
The steering apparatus according to any one of claims 1 to 5, provided on the navigation body main body,
A navigational body with The navigation body,
The steering device according to claim 2 or 3 provided in the navigation body body,
The drive unit is
A traveling body comprising at least the working fluid supply unit in the traveling body main body.

Images