JP5827828B2 - Ship drive system for out-drive device - Google Patents

Description

  The present invention relates to a technology of a ship maneuvering system for an outdrive device.

  2. Description of the Related Art Conventionally, an inboard / outboard motor (an inboard engine / outboard drive) that arranges an engine inside a hull and transmits power to an outdrive device arranged outside the hull is known (see, for example, Patent Document 1). The outdrive device is a propulsion device that propels the hull by rotating a screw propeller, and is also a rudder device that turns the hull by rotating with respect to the traveling direction of the hull.

  Such an outdrive device is freely rotated by a steering hydraulic actuator (see, for example, Patent Document 2). The hydraulic actuator for steering includes a piston that slides in response to hydraulic pressure, and the piston drives a steering arm via a rod to rotate the outdrive device.

  In a conventional boat maneuvering system for an outdrive device, when the piston of the steering hydraulic actuator stops halfway and cannot move to the target position, it is determined that an abnormality has occurred and the steering control is interrupted. Was configured. Therefore, when the piston of the steering hydraulic actuator stops halfway and the piston cannot move to the target position, there is a problem that the steering is immediately disabled.

JP 2001-1992 Japanese Patent Laid-Open No. 10-7090

  The present invention has been made to solve such a problem, and the steering control is continued even when the piston of the steering hydraulic actuator stops halfway and cannot move to the target position. Provide technology that can

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

According to a first aspect of the present invention, there is provided a steering hydraulic actuator that rotates an outdrive device by sliding a piston provided in a cylinder sleeve, and a flow direction of hydraulic fluid of the steering hydraulic actuator is changed. A marine vessel maneuvering system for an outdrive device, comprising: an electromagnetic proportional valve for switching a sliding direction of the piston; and a control device capable of transmitting a control signal to the electromagnetic proportional valve, wherein the control device is used for the steering When the piston of the hydraulic actuator stops halfway and the piston cannot move to the target position, the steering control is continued with the piston stopping position as a slidable region, and the control device Steering control is stopped when the distance from one end to the other is smaller than a predetermined value .

  As effects of the present invention, the following effects can be obtained.

  According to the present invention, when the piston stops halfway and the piston cannot move to the target position, the steering control can be continued using the piston stop position as a new slidable region.

  Thereby, even when the piston cannot move to the target position for some reason, the steering control can be continued.

Further, the steering control can be stopped when the distance from one end to the other end of the slidable region is smaller than a predetermined value.
Thereby, it becomes possible to prevent the temperature rise of the hydraulic oil resulting from the increase in the pressure of the hydraulic oil.

The figure which shows the whole outline | summary of the ship maneuvering system for outdrive devices. The figure which shows the structure of the ship handling system for outdrive apparatuses. The figure which shows the structure of an outdrive apparatus. The figure which shows the attachment structure of an outdrive apparatus. 1 is a diagram illustrating a configuration of a steering hydraulic actuator. FIG. The other figure which shows the structure of the hydraulic actuator for steering. The figure which shows the structure of an electromagnetic proportional valve. The figure which shows the operation | movement aspect of an electromagnetic proportional valve. The figure which shows the control flow of the ship operating system for outdrive apparatuses. The figure which shows the control flow of the ship operating system for outdrive apparatuses.

  First, the overall outline and configuration of the ship drive system 100 for an outdrive device will be described with reference to FIGS. 1 to 8. 1 and 2 show a so-called biaxial propulsion type outboard device maneuvering system 100 including two outdrive devices 10. However, even a uniaxial propulsion method or the like is established, and the present invention is not limited to this.

  The ship drive system 100 for an outdrive device is a control system that adjusts the operating state of the engine 5 in accordance with the operation of the accelerator lever 2 and consequently changes the rotational speed of the screw propeller 15. The ship drive system 100 for the outdrive device is also a control system that rotates the outdrive device 10 in accordance with the operation of the steering handle 3 and the joystick lever 4. The ship drive system 100 for an outdrive device is mainly composed of an outdrive device 10, a steering hydraulic actuator 20, an electromagnetic proportional valve 30, and a control device 40.

  The outdrive device 10 propels the hull 1 by rotating the screw propeller 15. In addition, the outdrive device 10 turns the hull 1 by turning with respect to the traveling direction of the hull 1. As shown in FIG. 3, the outdrive device 10 mainly includes an input shaft 11, a switching clutch 12, a drive shaft 13, an output shaft 14, and a screw propeller 15.

  The input shaft 11 transmits the rotational power of the engine 5 transmitted through the universal joint 6 to the switching clutch 12. One end of the input shaft 11 is connected to the universal joint 6 attached to the output shaft of the engine 5, and the other end is connected to the switching clutch 12 disposed inside the upper housing 10U.

  The switching clutch 12 can switch the rotational power of the engine 5 transmitted via the input shaft 11 or the like between the forward rotation direction and the reverse rotation direction. The switching clutch 12 has a forward rotating bevel gear connected to an inner drum having a disk plate and a reverse rotating bevel gear, and which disk plate is pressed against the pressure plate of the outer drum connected to the input shaft 11. To change the direction of rotation.

  The drive shaft 13 transmits the rotational power of the engine 5 transmitted through the switching clutch 12 and the like to the output shaft 14. The bevel gear provided at one end of the drive shaft 13 meshes with the forward rotation bevel gear and the reverse rotation bevel gear provided in the switching clutch 12, and the bevel gear provided at the other end of the lower housing 10R. It meshes with the bevel gear of the output shaft 14 arranged inside.

  The output shaft 14 transmits the rotational power of the engine 5 transmitted through the drive shaft 13 or the like to the screw propeller 15. The bevel gear provided at one end of the output shaft 14 meshes with the bevel gear of the drive shaft 13 as described above, and a screw propeller 15 is attached to the other end.

  The screw propeller 15 generates a propulsive force by rotating. The screw propeller 15 is driven by the rotational power of the engine 5 transmitted through the output shaft 14 and the like, and a plurality of blades 15a arranged around the rotational shaft generate propulsive force by removing surrounding water.

  The outdrive device 10 is supported by a gimbal housing 7 attached to a stern board (transom board) of the hull 1. Specifically, the outdrive device 10 is supported by the gimbal housing 7 so that the gimbal ring 16 of the outdrive device 10 is substantially perpendicular to the water line wl. The gimbal ring 16 is a substantially cylindrical rotation shaft attached to the outdrive device 10, and the outdrive device 10 rotates about the gimbal ring 16.

  A steering arm 19 extending inside the hull 1 is attached to the upper end portion of the gimbal ring 16. Then, the steering arm 19 rotates the outdrive device 10 around the gimbal ring 16. The steering arm 19 is driven by a steering hydraulic actuator 20 that is interlocked according to the operation of the steering handle 3 and the joystick lever 4.

  Here, the mounting structure of the outdrive device 10 will be described in detail with reference to FIG.

  A bracket 8 is attached to the front side of the stern board (transom board). A gimbal housing 7 is attached to the rear side of the stern board (transom board). The gimbal housing 7 is provided with pivot shafts 17 and 17 in a substantially vertical direction, and the gimbal ring 16 is rotatably supported by the pivot shafts 17 and 17. In addition, in the middle part of the gimbal ring 16, rotational shafts 18 and 18 are provided in the horizontal direction, and the front upper portion of the upper housing 10U is rotatably supported by the rotational shafts 18 and 18.

  A steering arm 19 is attached to the upper end of the rotation shaft 17. The steering arm 19 extends inside the hull 1 through through holes 1H and 8H provided in the hull 1 and the bracket 8. A steering hydraulic actuator 20 is connected to the end of the steering arm 19 (see FIG. 3). Therefore, the outdrive device 10 rotates to the left and right around the gimbal ring 16 when the steering hydraulic actuator 20 is operated.

  An elevating hydraulic actuator 9 is interposed between the lower part of the gimbal ring 16 and the upper housing 10U (see FIG. 3). Therefore, the outdrive device 10 rotates up and down around the rotation shafts 18 and 18 by the operation of the lifting hydraulic actuator 9.

  The steering hydraulic actuator 20 drives the steering arm 19 of the outdrive device 10 to rotate the outdrive device 10. As shown in FIG. 5, the steering hydraulic actuator 20 mainly includes a cylinder sleeve 21, a piston 22, a rod 23, a first cylinder cap 24, a second cylinder cap 25, and a position sensor 26. Is done. The steering hydraulic actuator 20 according to the present embodiment is a so-called single rod type hydraulic actuator, but may be a double rod type as shown in FIG.

  The cylinder sleeve 21 has a piston 22 slidably provided therein. Both ends of the cylinder sleeve 21 are provided with flanges protruding in the circumferential direction, and the first cylinder cap 24 or the second cylinder cap 25 is fixed to the flanges.

  The piston 22 slides inside the cylinder sleeve 21 by receiving hydraulic pressure. The piston 22 is provided with a through hole 22h coaxially with the central axis of the piston 22, and a rod 23 is inserted into the through hole 22h. Further, a ring groove is provided on the outer peripheral surface of the piston 22 in the circumferential direction, and a seal ring is provided around the ring groove. Further, a permanent magnet 222 is attached to the outer peripheral surface of the piston 22 between the seal rings.

  The rod 23 transmits the sliding movement of the piston 22 to the steering arm 19. One end portion of the rod 23 is provided with a reduced diameter portion 23ta in which the outer diameter of the rod 23 is reduced. The rod 23 is fixed to the piston 22 by being screwed with a nut 231 in a state where the reduced diameter portion 23 ta is inserted into the through hole 22 h of the piston 22. Further, the other end portion of the rod 23 is provided with a reduced diameter portion 23tb obtained by reducing the outer diameter of the rod 23. The rod 23 is fixed to the clevis 27 by being screwed with a nut 232 in a state where the reduced diameter portion 23 tb is inserted into the through hole 27 h of the clevis 27. The clevis 27 is a connecting member that connects the rod 23 and the steering arm 19.

  The first cylinder cap 24 seals one end of the cylinder sleeve 21. The first cylinder cap 24 is provided with a first oil passage 24p that communicates with a first oil chamber Oc1 constituted by a cylinder sleeve 21 and a piston 22. Further, a ring groove is provided in the circumferential direction on the peripheral wall surface inserted into the cylinder sleeve 21, and a seal ring is provided around the peripheral wall surface. Thereby, the first oil chamber Oc1 constitutes a pressure chamber that can withstand a predetermined oil pressure.

  The second cylinder cap 25 seals the other end of the cylinder sleeve 21 and supports the rod 23 in a slidable manner. The second cylinder cap 25 is provided with a second oil passage 25p that communicates with a second oil chamber Oc2 constituted by the cylinder sleeve 21 and the piston 22. Further, a ring groove is provided in the circumferential direction on the peripheral wall surface inserted into the cylinder sleeve 21, and a seal ring is provided around the peripheral wall surface. Further, the second cylinder cap 25 is provided with a through hole 25h coaxially with the central axis of the cylinder sleeve 21, and the rod 23 is slidably inserted into the through hole 25h. A ring groove is provided in the circumferential direction on the inner peripheral surface of the through hole 25h, and a seal ring is fitted into the ring groove. Thus, the second oil chamber Oc2 constitutes a pressure-resistant chamber that can withstand a predetermined oil pressure.

  The position sensor 26 detects the magnetic force of the permanent magnet 222 attached to the piston 22. The position sensor 26 is attached to the outer peripheral surface of the cylinder sleeve 21 so as to be parallel to the sliding direction of the piston 22 at least within a range in which the piston 22 can slide. Thereby, the control apparatus 40 can grasp | ascertain the position of the piston 22, and can grasp | ascertain the steering angle of the outdrive apparatus 10 by extension. Further, the control device 40 can recognize the sliding direction of the piston 22 by grasping the position of the piston 22 every unit time.

  The position sensor 26 is mainly composed of a so-called Hall element that converts an output voltage in accordance with a change in magnetic flux density. The Hall element detects the strength of the magnetic field from the potential difference (Hall voltage) caused by the Lorentz force by utilizing the Lorentz force acting on the electrons due to the interaction between the magnetic field and the current. In the present embodiment, the Hall element is used as the main component of the position sensor 26. However, a magnetoresistive element whose electric resistance value changes according to the strength of the magnetic field may be used, and the present invention is not limited thereto. Not what you want.

  The electromagnetic proportional valve 30 changes the flow direction of the hydraulic oil of the steering hydraulic actuator 20. As shown in FIGS. 7 and 8, the electromagnetic proportional valve 30 mainly includes a valve body 31, a spool shaft 32, a first solenoid 33, and a second solenoid 34. In addition, although the electromagnetic proportional valve 30 in this embodiment is what is called a direct-acting electromagnetic proportional valve, it may be a pilot-type electromagnetic proportional valve and does not limit the operation type.

  The valve body 31 has a spool shaft 32 slidably provided therein. The valve body 31 is provided with a barrel hole 31h in which a spool shaft 32 is provided, and the barrel hole 31h is connected to a supply / discharge port 31pa connected to the oil passages 24p and 25p of the steering hydraulic actuator 20. -31 pb is provided. The barrel hole 31h is provided with a pump port 31pp that communicates with the hydraulic oil pump 50 and a return port 31rp that communicates with the hydraulic oil tank 60. Furthermore, the valve body 31 is provided with an oil passage 31ol that connects the supply / discharge port 31pb and the return port 31rp on condition that the spool shaft 32 is in a predetermined position.

  The spool shaft 32 switches the oil passage of the hydraulic oil by sliding in the barrel hole 31h. The spool shaft 32 is provided with reduced-diameter portions 32ta, 32tb, and 32tc that reduce the outer diameter of the spool shaft 32, and when the spool shaft 32 slides, the ports 31pa, 31pb, 31pp, and 31rp are provided. Communicate or block between each other.

  The first solenoid 33 slides the spool shaft 32 in one direction. The first solenoid 33 in the present embodiment is a so-called single action proportional solenoid. The first solenoid 33 is adjacent to one end of the spool shaft 32 and slides the spool shaft 32 by utilizing the fact that the movable iron core is attracted to the magnetized electromagnetic coil. In the present embodiment, the first solenoid 33 slides the spool shaft 32 in the direction of the arrow R shown in FIG.

  The second solenoid 34 slides the spool shaft 32 to the other side. The second solenoid 34 in the present embodiment is a so-called single action proportional solenoid. The second solenoid 34 is adjacent to the other end of the spool shaft 32 and slides the spool shaft 32 by utilizing the fact that the movable iron core is attracted to the excited electromagnetic coil. In the present embodiment, the second solenoid 34 slides the spool shaft 32 in the direction of the arrow L shown in FIG.

  The control device 40 creates a control signal based on detection signals from the accelerator lever 2, the steering handle 3, the joystick lever 4, and the like, and transmits the created control signal to the electromagnetic proportional valve 30 and the like. In addition, the control device 40 creates a control signal based on information from a global positioning system (GPS), and can also send the created control signal to the electromagnetic proportional valve 30 or the like. That is, the control device 40 enables so-called automatic navigation in which the navigation is automatically performed by calculating the route from its own position and the set destination, in addition to the navigation manually performed by the operator.

  Next, the control aspect of the ship drive system 100 for this outdrive apparatus is demonstrated. FIG. 9 shows a control flow of the ship drive system 100 for the outdrive device.

  First, the case where the hull 1 is turned left by the operation of the steering handle 3 will be described.

  When turning the hull 1 to the left, the control device 40 needs to slide the piston 22 of the steering hydraulic actuator 20 in the direction of the arrow L shown in FIGS. Therefore, the control device 40 operates the second solenoid 34 by transmitting a control signal to the electromagnetic proportional valve 30. Thereby, the second solenoid 34 slides the spool shaft 32 to a predetermined position (see FIG. 8B). As a result, the piston 22 of the steering hydraulic actuator 20 slides in the direction of the arrow L shown in FIGS.

  Specifically, the control device 40 causes the supply / discharge port 31pa and the pump port 31pp to communicate with each other by sliding the spool shaft 32 with the second solenoid 34, and allows the supply / discharge port 31pb to communicate with the return port 31rp ( (See FIG. 8B). Thus, the hydraulic oil pumped from the hydraulic oil pump 50 is supplied to the second oil chamber Oc2 through the second oil passage 25p, and the hydraulic oil in the first oil chamber Oc1 passes through the first oil passage 24p. And returned to the hydraulic oil tank 60. By doing so, the hydraulic pressure applied to the second oil chamber Oc2 becomes higher than the hydraulic pressure applied to the first oil chamber Oc1, and the piston 22 separating the second oil chamber Oc2 and the first oil chamber Oc1 It slides to the Oc1 side.

  Here, the control device 40 determines that an abnormality has occurred when the piston 22 of the steering hydraulic actuator 20 stops halfway and cannot move to the target position, and performs the control described below. Start. Note that the control device 40 determines that the piston 22 has stopped halfway when the detection signal from the position sensor 26 does not change, that is, some abnormality such as seizure has occurred.

  First, in step S101, the control device 40 determines in what state the permission / rejection switch that can select whether or not to execute this control is present. That is, the control device 40 determines whether or not to continue the steering control of the outdrive device 10 when the piston 22 cannot move to the target position.

  And the control apparatus 40 transfers to step S102, when the permission switch is an ON state, ie, when steering control of the outdrive apparatus 10 is continued. On the other hand, the control device 40 ends this control when the permission / rejection switch is in the OFF state, that is, when the steering control of the outdrive device 10 is not continued.

  In step S102, the control device 40 grasps the stop position Sl of the piston 22 based on the detection signal from the position sensor 26 (see FIGS. 5 and 6). Then, the control device 40 calculates the difference between the extreme end of the original slidable area and the stop position S1 of the piston 22.

  In step S103, the control device 40 newly sets a slidable region X. That is, the control device 40 recognizes the stop position S1 of the piston 22 as the endmost part (extension side endmost part) on which the piston 22 can slide, and extends from the stop position Sl to the other end (shortest side endmost part). A new slidable region X is set (see FIGS. 5 and 6). And the control apparatus 40 determines the maximum pumping amount of the hydraulic fluid sent to the hydraulic actuator 20 for a steering based on the calculation result in step S102.

  In step S <b> 104, the control device 40 transmits a control signal to the electromagnetic proportional valve 30 to stop the operation of the second solenoid 34. Thereby, the spool shaft 32 is slid to a predetermined position by the urging force of the spring (see FIG. 8A). As a result, the piston 22 of the steering hydraulic actuator 20 stops at the stop position S1 of the piston 22, that is, at the end of the slidable region X.

  More specifically, the control device 40 blocks the ports 31pa, 31pb, 31pp, and 31rp by sliding the spool shaft 32 by stopping the operation of the second solenoid 34 (see FIG. 8A). As a result, the hydraulic oil pumped from the hydraulic oil pump 50 is not supplied to the first oil chamber Oc1 and the second oil chamber Oc2, and the hydraulic oil in each of the oil chambers Oc1 and Oc2 is not returned to the hydraulic oil tank 60. By doing so, the piston 22 that separates the first oil chamber Oc1 and the second oil chamber Oc2 stops at the extreme end of the slidable region X.

  In step S105, the control device 40 permits the subsequent steering control only within the slidable region X. That is, the control device 40 continues the steering control in the slidable region X by newly setting the slidable region X.

  With such a configuration, the ship maneuvering system 100 for the outdrive device performs a new sliding to the stop position Sl of the piston 22 when the piston 22 stops halfway and the piston 22 cannot move to the target position. Steering control can be continued as the possible region X. As a result, even when the piston 22 cannot move to the target position for some reason, the steering control can be continued.

  Next, the case where the hull 1 is turned to the right by operating the steering handle 3 will be described.

  When the hull 1 is turned to the right, the control device 40 needs to slide the piston 22 of the steering hydraulic actuator 20 in the direction of the arrow R shown in FIGS. Therefore, the control device 40 operates the first solenoid 33 by transmitting a control signal to the electromagnetic proportional valve 30. Thereby, the first solenoid 33 slides the spool shaft 32 to a predetermined position (see FIG. 8C). As a result, the piston 22 of the steering hydraulic actuator 20 slides in the direction of the arrow R shown in FIGS.

  More specifically, the control device 40 causes the supply / discharge port 31pa and the return port 31rp to communicate with each other by sliding the spool shaft 32 with the first solenoid 33, and allows the supply / discharge port 31pb to communicate with the pump port 31pp ( (See FIG. 8C). Thus, the hydraulic oil pumped from the hydraulic oil pump 50 is supplied to the first oil chamber Oc1 through the first oil passage 24p, and the hydraulic oil in the second oil chamber Oc2 passes through the second oil passage 25p. And returned to the hydraulic oil tank 60. By doing so, the hydraulic pressure applied to the first oil chamber Oc1 is higher than the hydraulic pressure applied to the second oil chamber Oc2, and the piston 22 separating the first oil chamber Oc1 and the second oil chamber Oc2 It slides to the Oc2 side.

  Here, the control device 40 determines that an abnormality has occurred when the piston 22 of the steering hydraulic actuator 20 stops halfway and cannot move to the target position, and performs the control described below. Start. Note that the control device 40 determines that the piston 22 has stopped halfway when the detection signal from the position sensor 26 does not change, that is, some abnormality such as seizure has occurred.

  First, in step S101, the control device 40 determines in what state the permission / rejection switch that can select whether or not to execute this control is present. That is, the control device 40 determines whether or not to continue the steering control of the outdrive device 10 when the piston 22 cannot move to the target position.

  And the control apparatus 40 transfers to step S102, when the permission switch is an ON state, ie, when steering control of the outdrive apparatus 10 is continued. On the other hand, the control device 40 ends this control when the permission / rejection switch is in the OFF state, that is, when the steering control of the outdrive device 10 is not continued.

  In step S102, the control device 40 grasps the stop position Sr of the piston 22 based on the detection signal from the position sensor 26 (see FIGS. 5 and 6). Then, the control device 40 calculates the difference between the extreme end of the original slidable region and the stop position Sr of the piston 22.

  In step S103, the control device 40 newly sets a slidable region Y. That is, the control device 40 recognizes the stop position Sr of the piston 22 as the extreme end (shortest end) where the piston 22 can slide, and extends from the stop position Sr to the other end (extension end). A new slidable area Y is set (see FIGS. 5 and 6). And the control apparatus 40 determines the maximum pumping amount of the hydraulic fluid sent to the hydraulic actuator 20 for a steering based on the calculation result in step S102.

  In step S <b> 104, the control device 40 transmits a control signal to the electromagnetic proportional valve 30 to stop the operation of the first solenoid 33. Thereby, the spool shaft 32 is slid to a predetermined position by the urging force of the spring (see FIG. 8A). As a result, the piston 22 of the steering hydraulic actuator 20 stops at the stop position Sr of the piston 22, that is, at the end of the slidable region Y.

  Specifically, the control device 40 causes the ports 31pa, 31pb, 31pp, and 31rp to be blocked by sliding the spool shaft 32 by stopping the operation of the first solenoid 33 (see FIG. 8A). As a result, the hydraulic oil pumped from the hydraulic oil pump 50 is not supplied to the first oil chamber Oc1 and the second oil chamber Oc2, and the hydraulic oil in each of the oil chambers Oc1 and Oc2 is not returned to the hydraulic oil tank 60. By doing so, the piston 22 that separates the first oil chamber Oc1 and the second oil chamber Oc2 stops at the extreme end of the slidable region Y.

  In step S105, the control device 40 permits the subsequent steering control only within the slidable region Y. That is, the control device 40 continues the steering control within the slidable area Y by newly setting the slidable area Y.

  With such a configuration, the ship maneuvering system 100 for the outdrive device performs a new sliding to the stop position Sr of the piston 22 when the piston 22 stops halfway and the piston 22 cannot move to the target position. Steering control can be continued as the possible region Y. As a result, even when the piston 22 cannot move to the target position for some reason, the steering control can be continued.

  Further, the ship maneuvering system 100 for the outdrive device stops the steering control when the distance from one end to the other end of the newly set slidable region X (Y) is smaller than a predetermined value. Can be configured. For example, as the predetermined value, a minimum value at which the ship cannot be maneuvered by the rotation of the outdrive device 10 is set.

  Below, the control aspect of the boat maneuvering system 100 for an outdrive device having such a configuration will be described. FIG. 10 shows a control flow of the ship drive system 100 for the outdrive device.

  Steps S201 to S204 in this control flow have the same configuration as the control mode described above. Therefore, it demonstrates from step S205 of this control flow.

  In step S205, the control device 40 determines whether or not the distance from one end to the other end of the slidable region X (Y) is smaller than a predetermined value. That is, the control device 40 calculates the length that the piston 22 can slide, that is, the sliding distance of the piston 22, and determines whether or not it is smaller than a preset value.

  And the control apparatus 40 complete | finishes this control, when the sliding distance of piston 22 is smaller than a predetermined value. On the other hand, the control device 40 proceeds to step S206 when the sliding distance of the piston 22 is larger than a predetermined value.

  In step S206, the control device 40 permits the subsequent steering control only within the slidable region X (Y). That is, the control device 40 continues the steering control within the slidable region X (Y) by newly setting the slidable region X (Y).

  With such a configuration, the ship maneuvering system 100 for the outdrive device newly sets the piston 22 to the stop position S1 (Sr) when the piston 22 stops halfway and cannot move to the target position. Steering control can be continued as a slidable region X (Y). As a result, even when the piston 22 cannot move to the target position for some reason, the steering control can be continued.

  Furthermore, the boat maneuvering system 100 for the outdrive device stops the steering control when the distance from one end to the other end of the slidable region X (Y) (the sliding distance of the piston 22) is smaller than a predetermined value. it can. Thereby, it becomes possible to prevent the temperature rise of the hydraulic oil resulting from the increase in the pressure of the hydraulic oil.

DESCRIPTION OF SYMBOLS 1 Hull 2 Accelerator lever 3 Steering handle 4 Joystick lever 10 Out drive device 15 Screw propeller 20 Steering hydraulic actuator 21 Cylinder sleeve 22 Piston 26 Position sensor 30 Electromagnetic proportional valve 32 Spool shaft 33 First solenoid 34 Second solenoid 40 Controller 50 Hydraulic oil pump 60 Hydraulic oil tank 100 Ship control system for out-drive device Sr Stop position Sl Stop position X Slidable area Y Slidable area

Claims (1)

A steering hydraulic actuator for rotating the outdrive device by sliding a piston provided in the cylinder sleeve;
An electromagnetic proportional valve that changes a flow direction of hydraulic oil of the steering hydraulic actuator and switches a sliding direction of the piston;
A control device capable of transmitting a control signal to the electromagnetic proportional valve, and a ship maneuvering system for an outdrive device,
When the piston of the steering hydraulic actuator stops halfway and the piston cannot move to the target position, the control device continues the steering control up to the piston stop position as a slidable region,
The control device stops the steering control when the distance from one end to the other end of the slidable region is smaller than a predetermined value .

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