An integrated hydraulic control system for outboard motor steering and tilting

Abstract

The present invention relates to an integrated hydraulic control system for steering and tilting an outboard motor, comprising a steering wheel, a tilting control button, a controller, and a hydraulic system. The steering wheel has a signal output connected to a signal receiving end of the controller, the tilting control button has a signal output connected to a signal receiving end of the controller, and the controller's output is connected to an input of the hydraulic system. The hydraulic system, through hydraulic control, outputs oil to a first and second tilting cylinder, or a steering cylinder, respectively, for controlling the tilting and steering functions of the outboard motor. The present invention reduces operating costs and, through a redundant steering system, provides a backup steering function in an emergency, thereby ensuring the safety of the boat.

Description

Technical Field

[0001] The present invention relates to the field of electric outboard motors, and in particular to an outboard motor steering and warping integrated hydraulic control system. Background Art

[0002] Currently, integrated hydraulic control systems are being designed for the tilting and steering control of electric outboard motors. This can reduce the weight, volume, and cost of the hydraulic system, making it feasible to deploy the hydraulic system on the outboard motor. Current steering and tilting devices utilize separate motor pumps and electronic oil pumps for oil supply, resulting in high system cost and weight. Steering is a high-level safety feature, especially for steer-by-wire systems like this one. For example, in steering systems controlled by motors, solenoid valves, or electronic oil pumps, if these motors or solenoid valves fail for some reason, the system loses its steering function. This can severely prevent the boat from steering properly, potentially endangering personal safety. Summary of the Invention

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide an outboard motor steering and warping integrated hydraulic control system.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] An integrated hydraulic control system for steering and tilting of an outboard motor includes a steering wheel, a tilting control button, a controller, and a hydraulic system. The signal output end of the steering wheel is connected to a signal receiving end of the controller, the signal output end of the tilting control button is connected to a signal receiving end of the controller, and the output end of the controller is connected to the input end of the hydraulic system. The hydraulic system outputs oil to a first and second tilting cylinders or a steering cylinder through hydraulic control, respectively, for controlling the tilting and steering functions of the outboard motor.

[0006] The hydraulic system includes a tilting hydraulic system for controlling the tilting of the outboard motor and a steering hydraulic system for controlling the steering of the outboard motor. The tilting hydraulic system is assisted in controlling the steering hydraulic system through the oil circuit NL and the oil circuit NR.

[0007] The hydraulic system for lifting includes

[0008] In the tilting circuit system, the motor pump outputs oil from the oil tank, and the oil passes through the second hydraulically controlled one-way valve and the second two-position three-way solenoid valve to the bottom oil chambers of the first and second tilting cylinders, realizing the upward movement of the piston rods of the tilting cylinders and driving the outboard motor to move upward;

[0009] In the descending circuit system, the motor pump outputs oil from the oil pot, and the oil is connected to the top oil chamber of the second lifting cylinder through the first hydraulically controlled one-way valve and the first two-position three-way solenoid valve. At the same time, the second hydraulically controlled one-way valve is opened to return the oil at the bottom of the second lifting cylinder to the oil pot, so that the oil in the upper chamber of the second lifting cylinder pushes the piston rod downward and drives the outboard motor downward.

[0010] In the auxiliary circuit system, the motor pump outputs oil from the oil tank. The oil passes through the second hydraulically controlled one-way valve, the second two-position three-way solenoid valve and the NL line and is connected to the left oil chamber of the steering cylinder, thus realizing the left turn of the outboard motor.

[0011] Or the oil is connected to the left oil chamber of the steering cylinder through the first hydraulically controlled one-way valve, the first two-position three-way solenoid valve and the NR line, thus realizing the right turn of the outboard motor;

[0012] The steering hydraulic system realizes the left and right linear motion of the steering cylinder piston rod.

[0013] The piston rod moves linearly to the right. When the valve core of the three-position four-way solenoid valve moves to the right, the oil in the circuit flows to the left cavity of the steering cylinder, and the oil in the right cavity of the steering cylinder flows to the oil pot, pushing the piston rod to move linearly to the right.

[0014] The piston rod moves linearly to the left. When the valve core of the three-position four-way solenoid valve moves to the left, the oil in the circuit flows to the right cavity of the steering cylinder, and the oil in the left cavity of the steering cylinder flows to the oil pot, thereby pushing the piston rod to move linearly to the left.

[0015] Preferably, in the outboard motor steering and tilting integrated hydraulic control system, the suction and outlet of the motor pump are respectively connected to the first overflow valve and the second overflow valve, and the first overflow valve and the second overflow valve are connected to the first oil tank.

[0016] Preferably, in the outboard motor steering and tilting integrated hydraulic control system, the mechanical pump is connected to the oil tank through the third and fourth relief valves.

[0017] Preferably, in the outboard motor steering and warping integrated hydraulic control system, the output end of the mechanical pump is connected to the switch valve through the first one-way valve and / or the second one-way valve.

[0018] Preferably, in the outboard motor steering and tilting integrated hydraulic control system, when a three-position four-way solenoid valve fails, the tilting function of the tilting hydraulic system is temporarily suppressed, and the tilting hydraulic system realizes the left and right linear movement of the outboard motor.

[0019] Preferably, in the outboard motor steering and tilting integrated hydraulic control system, the left chamber and the right chamber of the steering cylinder are connected to the three-position four-way solenoid valve through the third hydraulically controlled one-way valve and the fourth hydraulically controlled one-way valve respectively.

[0020] Preferably, in the outboard motor steering and tilting integrated hydraulic control system, the upper cavity of the first tilting cylinder is connected to the oil pot through the throttle port and the third one-way valve.

[0021] By means of the above solution, the present invention has at least the following advantages:

[0022] The present invention adopts a mechanical pump to replace the electronic oil pump, and adds a 3-position 4-way solenoid valve to replace the oil circuit of the electronic oil pump. The mechanical pump provides oil to cool and lubricate the outboard motor drive device, thereby reducing costs. At the same time, the present invention uses a redundant steering system to provide a backup steering function in an emergency, thereby ensuring the safety of the boat.

[0023] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 It is a structural schematic diagram of the present invention;

[0026] Figure 2 It is a hydraulic principle diagram of the hydraulic system of the present invention. DETAILED DESCRIPTION

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0029] Example

[0030] like Figure 1 and Figure 2 As shown, an integrated hydraulic control system for steering and tilting of an outboard motor includes a steering wheel 100, a tilting control button 130, a controller 110, and a hydraulic system 120. The signal output end of the steering wheel 100 is connected to the signal receiving end of the controller 110, the signal output end of the tilting control button 130 is connected to the signal receiving end of the controller 110, and the output end of the controller 110 is connected to the input end of the hydraulic system 120. The hydraulic system 120 outputs oil to the first and second tilting cylinders 12 and 13, or the steering cylinder 34, respectively, through hydraulic control, for controlling the tilting and steering functions of the outboard motor.

[0031] The hydraulic system 120 includes a tilting hydraulic system for controlling the tilting of the outboard motor and a steering hydraulic system for controlling the steering of the outboard motor. The tilting hydraulic system is assisted in controlling the steering hydraulic system through the oil circuit NL and the oil circuit NR.

[0032] The hydraulic system for lifting includes

[0033] In the warping circuit system, the motor pump 3 outputs oil from the first oil pot 21. The oil passes through the second hydraulically controlled one-way valve 5 and the second two-position three-way solenoid valve 7 and is connected to the bottom oil chambers 15 and 17 of the first and second warping cylinders 12 and 13, respectively, to realize the upward movement of the warping cylinder piston rod and drive the outboard motor to move upward.

[0034] In the descending circuit system, the motor pump 3 outputs oil from the first oil pot 21, and the oil passes through the first hydraulically controlled one-way valve 4 and the first two-position three-way solenoid valve 6 to the top oil chamber 16 of the second tilting cylinder 13. At the same time, the second hydraulically controlled one-way valve 5 is opened to return the oil at the bottom of the second tilting cylinder 13 to the first oil pot 21, so that the oil in the upper oil chamber 16 of the second tilting cylinder 13 pushes the piston rod downward and drives the outboard motor downward.

[0035] In the auxiliary circuit system, the motor pump 3 outputs oil from the oil tank 21. The oil passes through the second hydraulically controlled one-way valve 5, the second two-position three-way solenoid valve 7 and the line NL and is connected to the left oil chamber 32 of the steering cylinder 34, realizing the left turn movement of the outboard motor.

[0036] Or the oil is connected to the right oil chamber 33 of the steering cylinder 34 through the first hydraulically controlled one-way valve 4, the first two-position three-way solenoid valve 6 and the road NR, realizing the right turn movement of the outboard motor;

[0037] The steering hydraulic system realizes the left and right linear motion of the steering cylinder piston rod.

[0038] The piston rod moves linearly to the right. When the valve core of the three-position four-way solenoid valve 29 moves to the right, the oil in the circuit flows to the left cavity 32 of the steering cylinder 34, and the oil in the right cavity 33 of the steering cylinder 34 flows to the oil pot, thereby pushing the piston rod to move linearly to the right.

[0039] The piston rod moves linearly to the left. When the valve core of the three-position four-way solenoid valve 29 moves to the left, the oil in the circuit flows to the right cavity 33 of the steering cylinder 34, and the oil in the left cavity 32 of the steering cylinder 34 flows to the oil pot, thereby pushing the piston rod to move linearly to the left.

[0040] The suction and outlet ports of the motor pump 3 of the present invention are respectively connected to a first relief valve 1 and a second relief valve 2 , and the first relief valve 1 and the second relief valve 2 are connected to the first oil pot 21 .

[0041] The mechanical pump 18 in the present invention is connected to the second energy storage oil pot 22 through the third and fourth overflow valves 19 and 20.

[0042] The output end of the mechanical pump 18 in the present invention is connected to the switch valve 26 through the first one-way valve 24 and / or the second one-way valve 25 .

[0043] In the present invention, when the three-position four-way solenoid valve 29 fails, the tilting function of the tilting hydraulic system is temporarily suppressed, and the tilting hydraulic system realizes the left and right linear motion of the outboard motor.

[0044] The left chamber and the right chamber of the steering cylinder of the present invention are connected to the three-position four-way solenoid valve 29 through the third hydraulically controlled one-way valve 31 and the fourth hydraulically controlled one-way valve 30 respectively.

[0045] In the present invention, the upper cavity 14 of the first lifting cylinder 12 is connected to the oil pot through the first throttle 8 and the third one-way valve 9 as well as the second throttle 10 and the fourth one-way valve 11.

[0046] The working principle of the present invention is as follows:

[0047] The invention relates to an integrated hydraulic control system for controlling the lifting and steering of an electric-driven outboard motor device and the oil cooling and lubrication of the electric motor electronic control.

[0048] A motor-controlled oil pump provides hydraulic power to the tilting cylinder. When the motor rotates forward, oil is pumped into one side of the cylinder, tilting the outboard motor. Reverse the motor, and oil is removed from the cylinder on one side and sent to the other side, allowing the outboard motor to submerge.

[0049] Additionally, the outboard's drive shaft drives a mechanical pump, which in turn controls the oil flow to the cylinder via a 3-position, 4-way solenoid valve. This pump supplies oil to the two chambers (left and right) of the steering cylinder, controlling the outboard's steering function. By controlling the position of the 3-position, 4-way solenoid valve spool, oil enters the right chamber of the steering cylinder, pushing the cylinder piston to the left, thereby turning the outboard right. Conversely, oil enters the left chamber of the steering cylinder, simultaneously draining oil from the right chamber. This causes the cylinder piston to move to the right, thus turning the outboard left.

[0050] At the same time, since the steering function involves a high safety level, the present invention has a redundant steering function (i.e., an auxiliary circuit system). When an unexpected failure occurs in the steering system, such as when the 3-position 4-way solenoid valve fails to work, the tilting motor oil pump is used to provide hydraulic power to the steering hydraulic cylinder. Of course, the tilting function is temporarily suppressed during this period. The controller gives a current signal to the first and second solenoid valves for two redundant steering controls, opens the oil circuit from the tilting oil pump to the steering cylinder, and then controls the left and right movement of the piston of the steering cylinder by the forward and reverse rotation of the tilting motor oil pump, thereby controlling the steering function of the outboard motor. At the same time, the first and second solenoid valves are controlled to close the oil circuit of the tilting cylinder, temporarily suppressing the tilting function of the outboard motor.

[0051] The mechanical pump in this invention provides oil for cooling and lubricating the motor, electronic control, gear shaft, bearings, and other components within the outboard motor's drive system. Regardless of the mechanical pump's forward or reverse rotation, the oil circuit continuously supplies oil through the on-off valve to the outboard motor's system components for cooling and lubrication. The oil then returns to the oil pan at the bottom of the outboard motor, where it dissipates heat through the outboard's bottom housing, reducing the oil temperature.

[0052] When the driver turns the steering wheel 100, or presses the up and down tilt button 130, Figure 1 The sensor or tilt button in the steering wheel system outputs a signal to the controller 110. The controller 110 outputs an electrical signal to the hydraulic system 120 according to a set control program (set by a person skilled in the art). The hydraulic system 120 hydraulically controls the output of oil to the designated first and second tilt cylinders 12 and 13, or the steering cylinder 34, respectively, to control the tilt and steering functions of the outboard motor.

[0053] The working principle of the hydraulic system 120 of the present invention is shown in FIG. Figure 2 ,

[0054] The hydraulic system comprises a motor pump 3 and a mechanical oil pump 18 which respectively provide oil to the first and second tilting cylinders 12 and 13 and the steering cylinder 34 .

[0055] The motor pump 3 comprises a brushed or brushless motor driving an oil pump. This can be any type of external or internal gear pump, a plunger pump, or other oil pump. The specific structure is not described in detail here. Both the motor pump 3 and the mechanical oil pump 18 can rotate in both directions, delivering oil in both directions. Driven by the outboard motor's drive shaft, the mechanical pump rotates in both directions, delivering oil to the steering cylinder.

[0056] When the tilting control button 130 signal is input to the controller 110, the controller 110 sends an electrical signal to the motor pump 3 to drive the motor pump to Figure 2 When the motor rotates to the right, the motor pump 3 delivers oil to the oil circuit. The oil flows through the second hydraulically controlled one-way valve 5 and the second 2-position 3-way solenoid valve 7 and enters the bottom oil chambers 15 and 17 of the first and second lifting cylinders 12 and 13. This in turn pushes the piston rods of the lifting cylinders upward, achieving the lifting function of the outboard motor.

[0057] When the outboard motor reaches the designated position, the controller 110 issues an instruction, and the motor pump 3 stops rotating and stops outputting oil to the first and second tilting cylinders 12 and 13. The oil in the oil chambers 15 and 17 therein is prevented from flowing back into the first oil pot 21 by the second hydraulically controlled one-way valve 5, and can maintain the piston rod position of the first and second tilting cylinders 12 and 13, thereby maintaining the tilting position of the outboard motor for a long time. When the motor pump 3 rotates to the right, the oil suction port of the motor pump 3 sucks the oil in the oil pot and the oil in the upper oil chamber of the first tilting cylinder 12, and quickly flows to the oil suction port through the first one-way valve 9. At the same time, the oil in the upper oil chamber of the second tilting cylinder 13 flows into the oil suction port of the oil pump through the first hydraulically controlled one-way valve 4. The oil pressure of the oil circuit on the right side of the motor pump 3 can open the first hydraulically controlled one-way valve 4, so that the oil can flow back to the oil pump suction port.

[0058] Similarly, when the tilt control button 130 signal is input to the controller 110, the controller controls the motor pump to Figure 2 When rotating in the left direction, the oil enters the upper chamber 16 of the second lifting cylinder 13 through the first hydraulically controlled one-way valve 4 and the first 2-position 3-way solenoid valve 6. At the same time, the second hydraulically controlled one-way valve 5 is opened due to the oil pressure, and the oil in the lower chamber of the lifting cylinder is discharged and enters the oil suction port of the motor pump. Among them, a small amount of oil enters the upper chamber of the first lifting cylinder 12 because of the first throttle port 8. The chamber is connected to the oil pot and eventually enters the oil pot. The oil in the upper chamber 16 of the second lifting cylinder pushes the piston to move downward, and the piston rod drives the outboard motor to move downward. After reaching the specified position, the controller 110 sends a signal to the motor pump 3 to stop rotating. Similarly, the oil in the upper chamber 16 is maintained inside, so that the piston rod maintains this position, and the outboard motor also maintains this position.

[0059] The function of the first and second relief valves 1 and 2 is to prevent the system oil from being too high. When the pressure exceeds the specified value, the system oil pressure will be maintained below the set value.

[0060] When the driver turns steering wheel 100, sensors in the steering wheel system output signals to controller 110. Controller 110, based on a pre-programmed control program, outputs electrical signals to hydraulic system 120. Through hydraulic control, hydraulic system 120 delivers oil to steering cylinder 34 and left and right oil chambers 32 and 33, pushing the piston rods left and right, thus steering the outboard motor.

[0061] Among them, the mechanical oil pump 18 can be various types of external or internal gear pumps, plunger pumps or other forms of oil pumps. The specific form and structure will not be described in detail here. The mechanical oil pump 18 is driven by the outboard motor drive shaft and can achieve forward and reverse rotation. Regardless of whether the boat is moving forward or backward, the outboard motor drive shaft drives the mechanical pump 18 to rotate forward or reverse, and the supplied oil flows to the steering circuit and the cooling and lubrication circuit. The mechanical pump 18 sucks in the oil that has been cooled by the oil pan, and the output oil flows to the motor electronic control and gear bearing device through the switch valve 26, thereby achieving the purpose of circulating cooling of the motor electronic control gear bearings.

[0062] Controlling the position of the spool of 3-position, 4-way solenoid valve 29 controls the linear left and right movement of the steering cylinder's piston. When the valve is de-energized, the spool is in the neutral position. When the spool controls the 3-position, 4-way solenoid valve (29), it moves to the right in the direction shown in Figure 2. The oil in the circuit flows to the left chamber 32 of the steering cylinder 34, while the oil in the right chamber 33 flows to the oil reservoir. This pushes the piston rod in a linear motion to the right, steering the outboard motor to one side.

[0063] At this time, after the outboard motor reaches the specified angle (controlled by the steering wheel 100), the 3-position 4-way solenoid valve 29 is closed, and the valve core of the 3-position 4-way solenoid valve 29 returns to the middle position. The oil in the left cavity 34 is retained in the left cavity 32 due to the obstruction of the fourth hydraulically controlled one-way valve 31, thereby maintaining the steering angle of the outboard motor.

[0064] Conversely, if the valve core of the 3-position 4-way solenoid valve 29 moves to the left in direction 2, the oil in the circuit flows to the right chamber 33 of the cylinder 34, while the oil in the left chamber 32 of the cylinder flows back to the oil tank. The cylinder piston then moves to the left, driving the outboard motor to turn to the other side.

[0065] When the outboard motor reaches the designated position, the controller sends a signal to de-energize 3-position, 4-way solenoid valve 29, returning its spool to its neutral position. The oil in the right oil chamber of steering cylinder 34 is blocked by third hydraulically controlled check valve 30, maintaining the outboard motor's desired steering angle.

[0066] The function of the third and fourth relief valves 19 and 20 is to prevent the system oil from being too high and to operate after exceeding the specified value to maintain the system oil pressure below the set value.

[0067] If the 3-position, 4-way solenoid valve 29 fails for some reason, it cannot supply oil to the steering cylinder 34. The controller 110 activates the backup steering function through a pre-set program (programmed by a skilled person). The controller sends a specified electrical signal to the first and second solenoid valves 6, 7, activating them. The valve cores of the first and second solenoid valves 6, 7 move to the oil passages NL and NR, respectively. Simultaneously, the first and second solenoid valves 6, 7 close the oil passage from the motor pump 3 to the first and second tilting cylinders 12, 13. This completes the steering function, powered by the oil provided by the motor pump 3.

[0068] When the controller 110 sends an electrical signal to the motor pump 3, the motor pump is driven to Figure 2 When rotating to the right, the motor pump 3 outputs oil to the oil circuit. The oil passes through the second hydraulically controlled one-way valve 5 and activates the second 2-position 3-way solenoid valve 7 through the NL circuit and enters the left oil chamber 32 of the steering cylinder 34. At the same time, the first 2-position 3-way solenoid valve 6 is activated. The oil in the right oil chamber 32 passes through the first 2-position 3-way solenoid valve 6 and the first hydraulically controlled one-way valve 4 through the NR circuit and returns to the oil suction port of the motor pump 3.

[0069] This in turn pushes the cylinder piston rod to the right as shown in Figure 2, causing the outboard motor to steer to the side. When the outboard motor reaches the designated angle, controller 110 issues a command, halting motor pump 3 and stopping oil flow to steering cylinder 34. The oil in left oil chamber 32 is prevented from flowing back into first oil reservoir 21 by second hydraulically controlled one-way valve 5, maintaining the piston rod position of steering cylinder 34 and thus maintaining the outboard motor's steering angle.

[0070] Similarly, when the controller controls the motor pump 3 Figure 2 During leftward rotation, oil flows through the first hydraulically controlled check valve 4, activating the first 2-position, 3-way solenoid valve 6, and enters the right oil chamber 33 of the steering cylinder 34. Simultaneously, the oil pressure in the left chamber opens the second hydraulically controlled check valve 5, discharging the oil from the left chamber 32 of the cylinder and entering the oil pump suction port. The oil in the right chamber 33 of the steering cylinder pushes the piston to the left, and the piston rod drives the outboard motor to steer left.

[0071] When the outboard motor reaches the specified steering angle, the controller 110 sends a signal to the motor pump 3 to stop rotating. Similarly, the oil in the right chamber 33 is maintained inside, so that the piston rod maintains this position and the outboard motor also maintains this steering angle position.

[0072] When the backup emergency steering function is enabled, the tilting function of the outboard motor is temporarily inhibited until the fault of the three-position four-way solenoid valve 29 is repaired. By enabling the backup steering function, the boat can return to the port or the designated location safely.

[0073] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0074] In the description of this application, it should be noted that the terms "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended solely to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0075] In addition, the terms "horizontal" and "vertical" do not mean that the components must be absolutely horizontal or vertical, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0076] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An integrated hydraulic control system for steering and tilting of an outboard motor, characterized by: The invention comprises a steering wheel (100), a tilting control button (130), a controller (110) and a hydraulic system (120), wherein the signal output end of the steering wheel (100) is connected to the signal receiving end of the controller (110), the signal output end of the tilting control button (130) is connected to the signal receiving end of the controller (110), the output end of the controller (110) is connected to the input end of the hydraulic system (120), and the hydraulic system (120) outputs oil to the first and second tilting cylinders (12, 13) or the steering cylinder (34) through hydraulic control, respectively, for controlling the tilting and steering functions of the outboard motor; The hydraulic system (120) includes a tilting hydraulic system for controlling the tilting of the outboard motor and a steering hydraulic system for controlling the steering of the outboard motor, wherein the tilting hydraulic system assists in controlling the steering hydraulic system via an oil circuit NL and an oil circuit NR; The hydraulic system for lifting includes: In the tilting circuit system, the motor pump (3) outputs oil from the first oil pot (21), and the oil passes through the second hydraulically controlled one-way valve (5) and the second two-position three-way solenoid valve (7) and is connected to the bottom oil chambers of the first and second tilting cylinders (12, 13), thereby realizing the upward movement of the piston rods of the tilting cylinders and driving the outboard motor to move upward; In the descending circuit system, the motor pump (3) outputs oil from the first oil pot (21), and the oil is connected to the top oil chamber (16) of the second lifting oil cylinder (13) through the first hydraulically controlled one-way valve (4) and the first two-position three-way solenoid valve (6). At the same time, the second hydraulically controlled one-way valve (5) is opened to return the oil at the bottom of the second lifting oil cylinder (13) to the first oil pot (21), so that the oil in the upper chamber of the second lifting oil cylinder (13) pushes the piston rod to move downward and drives the outboard motor to move downward; In the auxiliary circuit system, the motor pump (3) outputs oil from the first oil tank (21), and the oil passes through the second hydraulically controlled one-way valve (5), the second two-position three-way solenoid valve (7) and the oil line NL and is connected to the left cavity (32) of the steering cylinder (34), thereby realizing the left turn movement of the outboard motor; Or the oil is connected to the right cavity (33) of the steering cylinder (34) through the first hydraulically controlled one-way valve (4), the first two-position three-way solenoid valve (6) and the oil path NR, thereby realizing the right turn movement of the outboard motor; The steering hydraulic system realizes the left and right linear movement of the steering cylinder piston rod; The piston rod moves linearly to the right. When the valve core of the three-position four-way solenoid valve (29) moves to the right, the oil in the circuit flows to the left cavity (32) of the steering cylinder (34), and the oil in the right cavity (33) of the steering cylinder (34) flows to the oil pot, thereby pushing the piston rod to move linearly to the right. The piston rod moves linearly to the left. When the valve core of the three-position four-way solenoid valve (29) moves to the left, the oil in the circuit flows to the right cavity (33) of the steering cylinder (34), and the oil in the left cavity (32) of the steering cylinder (34) flows to the oil pot, thereby pushing the piston rod to move linearly to the left. When the three-position four-way solenoid valve (29) fails, the tilting function of the tilting hydraulic system is temporarily suppressed, and the tilting hydraulic system realizes the left and right linear motion of the outboard motor; The left chamber and the right chamber of the steering cylinder are respectively connected to the three-position four-way solenoid valve (29) through the third hydraulically controlled one-way valve (30) and the fourth hydraulically controlled one-way valve (31); The upper cavity (14) of the first lifting oil cylinder (12) is connected to the oil pot through the throttle port (8) and the third one-way valve (9).

2. The outboard motor steering and tilting integrated hydraulic control system according to claim 1, characterized in that: The suction and outlet ports of the motor pump (3) are respectively connected to a first overflow valve (1) and a second overflow valve (2), and the first overflow valve (1) and the second overflow valve (2) are connected to the first oil pot (21).

3. The outboard motor steering and tilting integrated hydraulic control system according to claim 1, characterized in that: The mechanical pump (18) is connected to the second oil pot (22) through the third and fourth overflow valves (19, 20).

4. The outboard motor steering and tilting integrated hydraulic control system according to claim 1, characterized in that: The output end of the mechanical pump (18) is connected to the switch valve (26) via the first one-way valve (24) and / or the second one-way valve (25).

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