Steering mechanism of steering oar and steering control method

Abstract

The invention discloses a steering mechanism and a steering control method.The steering mechanism comprises a first power assembly and a second power assembly, the first power assembly comprises a first pump, a clutch and a diesel engine, the second power assembly comprises a second pump set, a third pump set and a control valve set, and the first pump is connected with the PTO end of the clutch; the hydraulic motor, the first pump, the second pump set and the third pump set are all connected with the control valve set. The first power assembly is used for driving the hydraulic motor to rotate in a first state, the second pump set is used for driving the hydraulic motor to rotate in a second state, and the third pump set is used for driving the hydraulic motor to rotate in a third state. According to the steering mechanism, the first pump, the second pump set and the third pump set are arranged, the pressure ports of the pumps are gathered to the control valve set, and the pressure input port of the hydraulic motor on the steering oar is connected with the control valve set, so that the steering oar can rotate in the first state, the second state and the third state, and a ship is prevented from being out of control.

Description

Technical Field

[0001] The invention belongs to the technical field of azimuth rudder propellers, and in particular relates to a steering mechanism and a steering control method of an azimuth rudder propeller. Background Art

[0002] The full-rotating propeller is a Z-type transmission device. Its main function is to transmit the power generated by the diesel engine to the propeller through the clutch, intermediate shaft system and two pairs of gear pairs in the upper and lower gear boxes of the propeller to generate thrust. At the same time, it can issue instructions through the rotation control system to control the lower gear box with the propeller to achieve unlimited rotation to the left or right. Therefore, the full thrust of the propeller can act in any direction, thereby obtaining the best match between the propulsion and thrust directions. Rudder efficiency refers to the ability of the rudder to change direction when the ship is sailing, which is specifically manifested in the rudder's ability to control the heading. Rudder efficiency is crucial to the safety of ship navigation. Once the steering gear fails, the ship will be out of control.

[0003] The steering mechanism of the existing azimuth propeller usually contains only one pump group. If the whole ship loses power, the pump group is damaged, or the ship is being loaded or repaired, the azimuth propeller cannot steer and the ship will be out of control. Summary of the invention

[0004] In view of this, in order to overcome the defects of the prior art, the present invention provides a steering mechanism of an azimuthally rotating propeller and a steering control method of the steering mechanism.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A steering mechanism for an azimuth propeller, comprising one or more hydraulic motors, wherein the hydraulic motors are used to drive the azimuth propeller to rotate, and the steering mechanism further comprises a first power assembly and a second power assembly, wherein the first power assembly comprises a first pump, a clutch and a diesel engine, and the second power assembly comprises a second pump group, a third pump group and a control valve group, wherein the first pump is connected to a PTO (Power Take-off) end of the clutch, and the hydraulic motor, the first pump, the second pump group and the third pump group are all connected to the control valve group;

[0007] The steering mechanism has a first state, a second state and a third state. The first power assembly is used to drive the hydraulic motor to rotate in the first state, the second pump group in the second power assembly is used to drive the hydraulic motor to rotate in the second state, and the third pump group in the second power assembly is used to drive the hydraulic motor to rotate in the third state.

[0008] According to some preferred implementation aspects of the present invention, the first pump is a hydraulic oil pump, the diesel engine is used to drive the first pump to operate, and the first pump includes a first oil suction port, a first oil discharge port, a first working pipe port, and a second working pipe port. The PTO end of the clutch is connected to the first pump, and the energy of the diesel engine can be used to drive the first pump to operate without the need for an additional power source; and even if the entire ship loses power, the propulsion system of the full-rotation propeller can still operate normally.

[0009] According to some preferred embodiments of the present invention, when the steering mechanism is in the second state, the pressure of the first pump is less than 1MPa. Under normal circumstances, the first pump is driven by the PTO end of the clutch, and provides power to the hydraulic motor through the control valve group to drive the rudder propeller to rotate. At this time, the steering mechanism is in the first state. When the entire ship loses power and the first pump is damaged, the third pump group can be used for emergency steering to return the rudder angle to zero; or when the diesel engine or motor cannot be started during loading or maintenance, the third pump group can be used to rotate the rudder angle to the required angle. At this time, the steering mechanism is in the third state.

[0010] According to some preferred embodiments of the present invention, the second power assembly further includes a base, a first bracket, a second bracket, an oil tank and a cooler, the first bracket and the second bracket are both fixedly arranged on the base, the oil tank is fixedly arranged on the top of the first bracket, a first connecting pipe port is fixedly arranged on the oil tank, and the first connecting pipe port is connected and communicated with the first oil suction port of the first pump; the control valve group is fixedly arranged on the top of the second bracket, and the cooler is fixedly connected to the oil tank; a first pipe joint is fixedly arranged on the cooler, one end of the first pipe joint is connected and communicated with the cooler, a second pipe joint is fixedly arranged on the first pipe joint, the second pipe joint includes a first joint, a second joint, a third joint and a fourth joint, the other end of the first pipe joint is connected and communicated with the first joint, and the third joint is connected and communicated with the first oil drain port of the first pump.

[0011] According to some preferred embodiments of the present invention, the control valve group includes a first valve block and two hydraulically controlled reversing valves, the first valve block is fixedly connected to the top of the second bracket, the two hydraulically controlled reversing valves are fixedly connected to the top of the first valve block, and the hydraulically controlled reversing valves are two-position four-way valves; two second connecting pipe ports and two third connecting pipe ports are fixedly provided on the first valve block, and the first working pipe port and the second working pipe port of the first pump are respectively connected to the two second connecting pipe ports.

[0012] According to some preferred implementation aspects of the present invention, each of the hydraulic motors has a third working pipe port, a fourth working pipe port and a second oil drain port, the third working pipe ports of all the hydraulic motors are collected into a third total working pipe port, the fourth working pipe ports of all the hydraulic motors are collected into a fourth total working pipe port, the second oil drain ports of all the hydraulic motors are collected into a second total oil drain port, the third total working pipe port and the fourth total working pipe port are respectively connected to the two third connecting pipe ports, and the second total oil drain port is connected and communicated with the second joint.

[0013] According to some preferred implementation aspects of the present invention, the second pump group includes a second pump, a motor, a coupling and a bell-shaped housing, one end of the motor is fixedly connected to one end of the second pump through the bell-shaped housing, the rotating shaft of the motor is connected to the rotating shaft of the second pump through the coupling, and the motor is used to drive the second pump to operate. The second pump is driven by the motor. When it is detected that the pressure of the first pump is less than 1MPa, the motor starts and switches to the second pump to drive the hydraulic motor to rotate. The second pump and the first pump are standby for each other and can be switched automatically. When the pressure of the first pump is greater than 1MPa, the first pump is defaulted to work.

[0014] According to some preferred embodiments of the present invention, the second pump is a hydraulic oil pump, the second pump includes a pump body and an oil replenishment pump, a first oil suction pipeline is provided between the pump body and the oil tank, a first pipeline and a second pipeline are provided between the pump body and the first valve block, one of the first pipeline and the second pipeline is used to supply oil to the hydraulic motor through the first valve block, and the remaining one of the first pipeline and the second pipeline is used to return oil to the second pump; an overflow pipeline is provided between the pump body and the cooler, and the end of the overflow pipeline away from the pump body is connected and communicated with the fourth joint. The second pump draws oil from the oil tank to supply oil to the hydraulic motor through the first pipeline or the second pipeline, and the oil overflowing from the second pump and the hydraulic motor enters the cooler through the overflow pipeline through the fourth joint of the second pipe joint, and then flows back to the oil tank after cooling.

[0015] According to some preferred implementation aspects of the present invention, a delivery pipeline is provided between the oil replenishment pump and the first valve block, and the oil replenishment pump supplies oil to the hydraulically controlled reversing valve through the delivery pipeline to drive the hydraulically controlled reversing valve to change direction; an oil replenishment pipeline is provided between the oil replenishment pump and the pump body. The oil replenishment pump replenishes oil to the pump body through the oil replenishment pipeline; the purpose of setting the delivery pipeline is to lead a pressure supply from the oil replenishment pump to the first valve block in the control valve group as a control power source to drive the hydraulically controlled reversing valve to operate. When there is pressure in this control line, the hydraulically controlled reversing valve will automatically switch to the second pump to work: the fluid pressure in the second pump is used to overcome the elastic force of the spring in the hydraulically controlled reversing valve to manipulate the movement of the valve core of the hydraulically controlled reversing valve, thereby realizing the change of the oil flow direction in the hydraulic system to realize the reversal of the hydraulically controlled reversing valve. Two groups of hydraulically controlled reversing valves are provided on the control valve group, corresponding to two working pipe ports in different states respectively, and the two groups of hydraulically controlled reversing valves act simultaneously, and the switching control pressure is about 1.5MPa.

[0016] According to some preferred embodiments of the present invention, a second oil suction pipe is arranged between the third pump group and the oil tank, a third pipe and a fourth pipe are arranged between the third pump group and the first valve block, the third pump group includes a manual pump, one of the third pipe and the fourth pipe is used to supply oil to the hydraulic motor through the first valve block, and the remaining one of the third pipe and the fourth pipe is used to return oil to the manual pump.

[0017] Specifically, the third pump group also includes a fixed seat and a second valve block arranged above the fixed seat, a manual reversing valve, a first ball valve, a second ball valve and a pipe joint assembly. The manual pump is fixedly connected to the fixed seat, and the two ends of the pipe joint assembly are respectively connected to the manual pump and the second valve block, the bottom of the second valve block is connected to the top of the manual pump, the first ball valve and the second ball valve are both fixedly connected to the second valve block, the bottom of the manual reversing valve is connected to the top of the second valve block, and the manual reversing valve is a three-position four-way reversing valve. One end of the third pipeline is connected and communicated with one end of the first ball valve away from the second valve block, and one end of the fourth pipeline is connected and communicated with one end of the second ball valve away from the second valve block. The pipe joint assembly is provided with the second oil suction pipeline so that the manual pump can suck oil from the oil tank; in addition, the pipe joint assembly is also provided with an oil return pipeline, one end of the oil return pipeline is connected and communicated with the first valve block of the control valve group, and the other end of the oil return pipeline is provided with a three-way pipe joint. When there is leakage of oil in the valve body of the first valve block, it can be returned to the oil tank through the oil return pipeline, the three-way pipe joint and the second oil suction pipeline.

[0018] The two pressure ports of the first pump, the two pressure ports of the second pump and the two pressure ports of the third pump of the present invention are finally gathered into the two third connecting pipe ports on the valve block in the control valve group to output power to the hydraulic motor, drive the hydraulic motor to rotate and drive the steering propeller to rotate.

[0019] The present invention also provides a steering control method for the steering mechanism of the azimuth propeller as described above, comprising the following steps:

[0020] The steering mechanism switches between a first state, a second state and a third state and is in corresponding states;

[0021] The PTO end of the clutch drives the first pump to operate, and the first pump provides power to the hydraulic motor through the control valve group to drive the steering propeller to rotate, and the steering mechanism is in the first state;

[0022] When the pressure of the first pump is less than 1 MPa, the steering mechanism switches to the second state, the motor in the second pump group drives the second pump to operate, and the second pump provides power to the hydraulic motor through the control valve group to drive the steering propeller to rotate;

[0023] When the entire ship loses power and the first pump is damaged, or the full-revolving propeller is being loaded on board, or the full-revolving propeller is being repaired, the steering mechanism switches to the third state, and the manual pump in the third pump group is manually operated. The third pump provides power to the hydraulic motor through the control valve group to drive the propeller to rotate.

[0024] Compared with the prior art, the advantage of the present invention lies in that the steering mechanism of the full-rotating propeller of the present invention, by setting the first pump, the second pump group, and the third pump group, finally gathers the pressure ports of these pumps to the control valve group, and connects the pressure input port of the hydraulic motor on the propeller to the control valve group, thereby outputting power to the hydraulic motor respectively, driving the hydraulic motor to rotate to drive the propeller to rotate, so that the propeller can be rotated in the first state, the second state and the third state, ensuring that the propeller can effectively steer even when the pressure of the first pump is low (less than 1MPa), the whole ship loses power and the first pump is damaged, or when being loaded or repaired, thereby avoiding the situation where the ship loses control of its heading. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the steering mechanism in Embodiment 1 of the present invention from a first viewing angle;

[0027] Figure 2 is a schematic diagram of the three-dimensional structure of the steering mechanism in Embodiment 1 of the present invention from a second viewing angle;

[0028] Figure 3 Schematic diagram of the principle of the steering mechanism in Embodiment 1 of the present invention;

[0029] Among them: the first power assembly-1, the second power assembly-2, the second pump group-21, the pump body-211a, the oil replenishment pump-211b, the motor-212, the bell-shaped cover-213, the first oil suction pipeline-214, the first pipeline-215, the second pipeline-216, the overflow pipeline-217, the delivery pipeline-218, the oil replenishment pipeline-219, the third pump group-22, the fixed seat-221, the second valve block-222, the manual reversing valve-223, the operating handle-2231, the first ball valve-224a, the second ball valve-224b, the third pipe joint-2251, the filter-2252, the manual pump-2 26, second oil suction pipeline-227, oil return pipeline-228, third pipeline-229a, fourth pipeline-229b, control valve group-23, first valve block-231, second connecting pipe port-2311, third connecting pipe port-2312, hydraulically controlled reversing valve-232, base-24, oil drip tray-241, shock absorber-242, first bracket-25, second bracket-26, oil tank-27, first connecting pipe port-271, cooler-28, first pipe joint-281, second pipe joint-282, first joint-T1, second joint-T2, third joint-T3, fourth joint-T4. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0031] Embodiment 1 Steering mechanism of azimuthally rotating propeller

[0032] like Figures 1 to 3 As shown, the full-rotation propeller in this embodiment includes a steering mechanism, which includes a first power assembly 1, a second power assembly 2 and one or more hydraulic motors. Two hydraulic motors are provided in this embodiment, and the hydraulic motors are used to drive the full-rotation propeller to rotate; the first power assembly 1 includes a first pump, a clutch, a diesel engine and a shaft system, and the shaft system is used to connect the clutch and the propeller of the steering propeller. The second power assembly 2 includes a second pump group 21, a third pump group 22 and a control valve group 23. The first pump is connected to the PTO end of the clutch, and the hydraulic motor, the first pump, the second pump group 21 and the third pump group 22 are all connected to the control valve group 23.

[0033] Furthermore, the first pump is a hydraulic oil pump, which includes a first oil suction port, a first oil discharge port, a first working pipe port (pressure port) and a second working pipe port (pressure port). By connecting the PTO end of the clutch to the first pump, the energy of the diesel engine can be used to drive the first pump to operate without the need for an additional power source; and even if the entire ship loses power, the propulsion system of the full-rotation propeller can still work normally.

[0034] Furthermore, each hydraulic motor has a third working pipe port, a fourth working pipe port and a second oil drain port. In this embodiment, the third working pipe ports of the two hydraulic motors are all converged to the third total working pipe port (pressure port), the fourth working pipe ports of the two hydraulic motors are all converged to the fourth total working pipe port (pressure port), and the second oil drain ports of the two hydraulic motors are all converged to the second total oil drain port.

[0035] Furthermore, the second power assembly 2 further includes a base 24, a first bracket 25, a second bracket 26, an oil tank 27 and a cooler 28. The top surface of the base 24 is provided with an oil drip pan 241 for collecting oil leaked from the second power assembly 2. The bottoms of the first bracket 25 and the second bracket 26 are fixedly connected to the oil drip pan 241 on the base 24. The oil tank 27 is fixedly provided on the top of the first bracket 25. A first connecting pipe port 271 is fixedly provided on the oil tank 27. The first connecting pipe port 271 is connected and communicated with the first oil suction port of the first pump. A valve is provided on the first connecting pipe port 271 to control its on and off. An electric control box and a liquid level and temperature gauge are also fixedly provided on the oil tank 27. The cooler 28 is fixedly connected to the oil tank 27, and a first pipe joint 281 is fixedly provided on the cooler 28. One end of the first pipe joint 281 is connected and communicated with the cooler 28. A second pipe joint 282 is fixedly provided on the first pipe joint 281. The second pipe joint 282 includes a first joint T1, a second joint T2, a third joint T3 and a fourth joint T4. The other end of the first pipe joint 281 is connected and communicated with the first joint T1, the second joint T2 is connected and communicated with the second total oil drain ports of the two hydraulic motors, and the third joint T3 is connected and communicated with the first oil drain port of the first pump.

[0036] The control valve group 23 is fixedly arranged on the top of the second bracket 26. The control valve group 23 includes a first valve block 231 and two hydraulically controlled reversing valves 232. The first valve block 231 is fixedly connected to the top of the second bracket 26. The two hydraulically controlled reversing valves 232 are both fixedly connected to the top of the first valve block 231. The hydraulically controlled reversing valves 232 are two-position four-way valves. Two second connecting pipe ports 2311 and two third connecting pipe ports 2312 are fixedly arranged on the first valve block 231. The first working pipe port and the second working pipe port of the first pump are respectively connected to the two second connecting pipe ports 2311. The third main working pipe ports and the fourth main working pipe ports of the two hydraulic motors are respectively connected to the two third connecting pipe ports 2312.

[0037] Further, the second pump group 21 includes a second pump, a motor 212, a coupling and a bell 213. A shock absorber 242 is installed at the bottom of the motor 212. The shock absorber 242 is fixedly arranged on the oil drip tray 241. The shock absorber 242 is used to reduce the vibration intensity generated when the motor 212 is working. The second pump is a hydraulic oil pump and a closed pump. The second pump includes a pump body 211a and an oil replenishment pump 211b. The oil replenishment pump 211b and the main pump are both worn on a rotating shaft. One end of the motor 212 is fixedly connected to one end of the pump body 211a of the second pump through the bell 213. The rotating shaft of the motor 212 is connected to the rotating shaft of the second pump through a coupling, so that the motor 212 drives the second pump to operate. The second pump and the first pump are standby for each other and can be automatically switched.

[0038] Specifically, a first oil suction pipe 214 is provided between the pump body 211a and the oil tank 27, and a first pipe 215 and a second pipe 216 are provided between the pump body 211a and the first valve block 231. One of the first pipe 215 and the second pipe 216 is used to supply oil to the hydraulic motor through the first valve block 231, and the remaining one of the first pipe 215 and the second pipe 216 is used to return oil to the second pump, so that the second pump can supply oil to the hydraulic motor through the first pipe 215 or the second pipe 216 after sucking oil from the oil tank 27. An overflow pipe 217 is provided between the pump body 211a and the cooler 28, and one end of the overflow pipe 217 away from the pump body 211a is connected and communicated with the fourth joint T4, so that the oil overflowing from the second pump and the hydraulic motor can be cooled by the cooler 28 and then returned to the oil tank 27.

[0039] An oil replenishment pipeline 219 is provided between the oil replenishment pump 211b and the pump body 211a, and the oil replenishment pump 211b replenishes oil in the second pump through the oil replenishment pipeline 219. A delivery pipeline 218 is provided between the oil replenishment pump 211b and the first valve block 231. The purpose of the delivery pipeline 218 is to lead a pressure supply from the oil replenishment pump 211b to the first valve block 231 in the control valve group 23, which serves as a control power source to drive the hydraulic control reversing valve 232 to operate for reversing. When there is pressure in this control line, the hydraulic control reversing valve 232 will automatically switch to the second pump to work.

[0040] Further, the third pump group 22 also includes a fixed seat 221 and a manual pump 226, a second valve block 222, a manual reversing valve 223, a first ball valve 224a, a second ball valve 224b and a pipe joint assembly arranged above the fixed seat 221. The bottom of the manual pump 226 is fixedly connected to the top of the fixed seat 221 through a bolt and nut assembly, the bottom of the second valve block 222 is connected to the top of the manual pump 226, the bottom of the manual reversing valve 223 is connected to the top of the second valve block 222, and the first ball valve 224a and the second ball valve 224b are both fixedly connected to the second valve block 222 and are both located on one side of the second valve block 222. The manual reversing valve 223 in this embodiment is a three-position four-way reversing valve, which includes a valve body, a valve core and a manipulation handle 2231. The valve core can be rotated by rotating the manipulation handle 2231.

[0041] A third pipe 229a is provided at one end of the first ball valve 224a away from the second valve block 222, and a fourth pipe 229b is provided at one end of the second ball valve 224b away from the second valve block 222. The other ends of the third pipe 229a and the fourth pipe 229b are connected and communicated with the first valve block 231. One of the third pipe 229a and the fourth pipe 229b is used to supply oil to the hydraulic motor through the first valve block 231, and the remaining one of the third pipe 229a and the fourth pipe 229b is used to return oil to the manual pump 226.

[0042] Specifically, the pipe joint assembly includes a third pipe joint 2251 and a filter 2252, wherein the third pipe joint 2251 has three joints, one end of the filter 2252 is connected and communicated with one end of the third pipe joint 2251, and the other end of the filter 2252 is connected and communicated with the inlet of the manual pump 226; the other end of the third pipe joint 2251 is connected to the second valve block 222 and is located below the first ball valve 224a and the second ball valve 224b; another end of the third pipe joint 2251 is provided with A three-way pipe joint, a second oil suction pipe 227 is arranged between one end of the three-way pipe joint and the oil tank 27 so that the manual pump 226 can suck oil from the oil tank 27, so that the oil in the oil tank 27 is sucked into the manual pump 226 through the filter 2252; an oil return pipe 228 is arranged between the other end of the three-way pipe joint and the first valve block 231, when there is oil leakage in the valve body of the first valve block 231, it can return to the oil tank 27 through the oil return pipe 228, the three-way pipe joint and the second oil suction pipe 227. The filter 2252 in this embodiment is a Y-type filter 2252, which is used for coarse filtering of the oil.

[0043] Furthermore, the manual reversing valve 223 includes port A, port B, port P and port T. One end of the first ball valve 224a is connected to port A of the manual reversing valve 223 through the second valve block 222. One end of the second ball valve 224b is connected to port B of the manual reversing valve 223 through the second valve block 222. The outlet of the manual pump 226 is connected to port P of the manual reversing valve 223 through the second valve block 222. The second connector T2 is connected to port T of the manual reversing valve 223 through the second valve block 222.

[0044] In this embodiment, the steering mechanism has a first state, a second state and a third state. The first power assembly 1 is used to drive the hydraulic motor to rotate in the first state, the second pump group 21 in the second power assembly 2 is used to drive the hydraulic motor to rotate in the second state, and the third pump group 22 in the second power assembly 2 is used to drive the hydraulic motor to rotate in the third state. Specifically, under normal circumstances, the first pump is driven by the PTO end of the clutch, and provides power to the hydraulic motor through the control valve group 23 to drive the rudder propeller to rotate. At this time, the steering mechanism is in the first state. When the pressure of the first pump is less than 1MPa, the motor 212 is started, and the hydraulic control reversing valve 232 is automatically switched to communicate with the second pump, and the hydraulic motor is driven to rotate by the second pump. At this time, the steering mechanism is in the second state. When the whole ship loses power and the first pump is damaged, the third pump group 22 can be used for emergency steering to return the rudder angle to zero; when the diesel engine or motor 212 cannot be started during loading or maintenance, the third pump group 22 can be used to rotate the rudder angle to the required angle. In these cases, the steering mechanism is in the third state.

[0045] Embodiment 2 Steering control method of steering mechanism of azimuth propeller

[0046] This embodiment provides a steering control method for a steering mechanism of an azimuth propeller, comprising the following steps:

[0047] The steering mechanism switches between a first state, a second state and a third state and is in corresponding states.

[0048] Among them, the two pressure ports of the first pump, the two pressure ports of the second pump and the two pressure ports of the third pump are all connected to the two third connecting pipe ports 2312 on the valve block in the control valve group 23 to output power to the hydraulic motor, driving the hydraulic motor to rotate to drive the rudder propeller to rotate.

[0049] Under normal circumstances, the first pump is driven by the PTO end of the clutch, and provides power to the hydraulic motor through the control valve group 23 to drive the steering propeller to rotate, and the steering mechanism is in the first state.

[0050] When the pressure of the first pump is less than 1 MPa, the steering mechanism switches to the second state, the motor 212 in the second pump group starts to drive the second pump to operate, and the second pump provides power to the hydraulic motor through the control valve group 23 to drive the steering propeller to rotate.

[0051] When the whole ship loses power and the first pump is damaged, or the full-revolving propeller is being loaded, or the full-revolving propeller is being repaired, the steering mechanism switches to the third state, and the manual pump 226 in the third pump group 22 is manually operated. The third pump 226 provides power to the hydraulic motor through the control valve group 23 to drive the propeller to rotate. Among them, when the whole ship loses power and the first pump is damaged, the manual pump 226 can be used for emergency steering to return the rudder angle to zero; when loading or repairing, it is often impossible to start the diesel engine or motor 212, and the manual pump 226 can be used to rotate the rudder angle to the required angle. Specifically, the operating handle 2231 on the manual reversing valve 223 in the third pump group 22 is turned to drive the manual pump 226 to operate, thereby providing power to the hydraulic motor through the control valve group 23 to drive the propeller to rotate.

[0052] The fully rotating propeller in this embodiment can be rotated in the first state, the second state and the third state to prevent the ship from losing control of its heading.

[0053] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A steering mechanism for an azimuth propeller, comprising one or more hydraulic motors, wherein the hydraulic motors are used to drive the azimuth propeller to rotate, characterized in that: The steering mechanism further includes a first power assembly and a second power assembly, wherein the first power assembly includes a first pump, a clutch and a diesel engine, and the second power assembly includes a second pump group, a third pump group and a control valve group, wherein the first pump is connected to the PTO end of the clutch, and the hydraulic motor, the first pump, the second pump group and the third pump group are all connected to the control valve group; The steering mechanism has a first state, a second state and a third state. The first power assembly is used to drive the hydraulic motor to rotate in the first state, the second pump group in the second power assembly is used to drive the hydraulic motor to rotate in the second state, and the third pump group in the second power assembly is used to drive the hydraulic motor to rotate in the third state.

2. The steering mechanism according to claim 1, characterized in that: The first pump is a hydraulic oil pump, the diesel engine is used to drive the first pump to operate, and the first pump includes a first oil suction port, a first oil discharge port, a first working pipe port and a second working pipe port.

3. The steering mechanism according to claim 2, characterized in that: When the steering mechanism is in the second state, the pressure of the first pump is less than 1 MPa.

4. The steering mechanism according to claim 1, characterized in that: The second power assembly also includes a base, a first bracket, a second bracket, an oil tank and a cooler, the first bracket and the second bracket are both fixedly arranged on the base, the oil tank is fixedly arranged on the top of the first bracket, a first connecting pipe port is fixedly arranged on the oil tank, and the first connecting pipe port is connected and communicated with the first oil suction port of the first pump; the control valve group is fixedly arranged on the top of the second bracket, and the cooler is fixedly connected to the oil tank; a first pipe joint is fixedly arranged on the cooler, one end of the first pipe joint is connected and communicated with the cooler, a second pipe joint is fixedly arranged on the first pipe joint, the second pipe joint includes a first joint, a second joint, a third joint and a fourth joint, the other end of the first pipe joint is connected and communicated with the first joint, and the third joint is connected and communicated with the first oil drain port of the first pump.

5. The steering mechanism according to claim 4, characterized in that: The control valve group includes a first valve block and two hydraulically controlled reversing valves, the first valve block is fixedly connected to the top of the second bracket, the two hydraulically controlled reversing valves are fixedly connected to the top of the first valve block, and the hydraulically controlled reversing valve is a two-position four-way valve; two second connecting pipe ports and two third connecting pipe ports are fixedly provided on the first valve block, and the first working pipe port and the second working pipe port of the first pump are respectively connected to the two second connecting pipe ports.

6. The steering mechanism according to claim 5, characterized in that: Each of the hydraulic motors has a third working pipe port, a fourth working pipe port and a second oil drain port. The third working pipe ports of all the hydraulic motors are collected into a third main working pipe port, the fourth working pipe ports of all the hydraulic motors are collected into a fourth main working pipe port, and the second oil drain ports of all the hydraulic motors are collected into a second main oil drain port. The third main working pipe port and the fourth main working pipe port are respectively connected to the two third connecting pipe ports, and the second main oil drain port is connected and communicated with the second joint.

7. The steering mechanism according to claim 5, characterized in that: The second pump group includes a second pump, a motor, a coupling and a bell-shaped cover. One end of the motor is fixedly connected to one end of the second pump through the bell-shaped cover. The rotating shaft of the motor is connected to the rotating shaft of the second pump through the coupling. The motor is used to drive the second pump to operate.

8. The steering mechanism according to claim 7, characterized in that: The second pump is a hydraulic oil pump, which includes a pump body and an oil replenishment pump. A first oil suction pipe is arranged between the pump body and the oil tank, and a first pipe and a second pipe are arranged between the pump body and the first valve block. One of the first pipe and the second pipe is used to supply oil to the hydraulic motor through the first valve block, and the remaining one of the first pipe and the second pipe is used to return oil to the second pump; an overflow pipe is arranged between the pump body and the cooler, and an end of the overflow pipe away from the pump body is connected to and communicated with the fourth joint.

9. The steering mechanism according to claim 8, characterized in that: A delivery pipeline is provided between the oil replenishment pump and the first valve block, and the oil replenishment pump supplies oil to the hydraulically controlled reversing valve through the delivery pipeline to drive the hydraulically controlled reversing valve to change direction; an oil replenishment pipeline is provided between the oil replenishment pump and the pump body.

10. The steering mechanism according to claim 5, characterized in that: A second oil suction pipe is arranged between the third pump group and the oil tank, a third pipe and a fourth pipe are arranged between the third pump group and the first valve block, the third pump group includes a manual pump, one of the third pipe and the fourth pipe is used to supply oil to the hydraulic motor through the first valve block, and the remaining one of the third pipe and the fourth pipe is used to return oil to the manual pump.

11. A steering control method for a steering mechanism of an azimuth propeller according to any one of claims 1 to 10, characterized in that: The steps include: The steering mechanism switches between a first state, a second state and a third state and is in corresponding states; The PTO end of the clutch drives the first pump to operate, and the first pump provides power to the hydraulic motor through the control valve group to drive the steering propeller to rotate, and the steering mechanism is in the first state; When the pressure of the first pump is less than 1 MPa, the steering mechanism switches to the second state, the motor in the second pump group drives the second pump to operate, and the second pump provides power to the hydraulic motor through the control valve group to drive the steering propeller to rotate; When the entire ship loses power and the first pump is damaged, or the full-revolving propeller is being loaded on board, or the full-revolving propeller is being repaired, the steering mechanism switches to the third state, and the manual pump in the third pump group is manually operated. The third pump provides power to the hydraulic motor through the control valve group to drive the propeller to rotate.

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