Dual rudder function type hydraulic steering gear system for ship

Abstract

The utility model discloses a dual rudder effect function type marine hydraulic steering gear system, apply in the field of marine equipment, solved the existing steering gear control system in cannot realize different navigation condition under the technical problem of rudder effect adaptive switching, its technical scheme main points are including hydraulic module and steering gear module, the steering gear module includes tiller, with tiller fixed rudder post and be connected in tiller bottom end's rudder blade, the hydraulic module includes with tiller swing joint's steering gear cylinder group, electric hydraulic oil pump, hydraulic oil tank and the hydraulic passage of intercommunication each part in hydraulic module, its characterized in that: still be connected with hydraulic electromagnetic reversing valve between the steering gear cylinder group, the hydraulic passage includes oil inlet passage and oil return passage, the steering gear cylinder group includes steering gear cylinder no.

Description

Technical Field

[0001] This utility model relates to the field of marine equipment, and in particular to a dual-rudder-effect marine hydraulic steering gear system. Background Technology

[0002] Traditional marine hydraulic steering gears are currently shipped with only one steering effect function (e.g., Figure 1 As shown in the figure, the so-called rudder effect refers to the time it takes for the rudder blade on a ship to turn from 45° to 45° to the left. Generally, the rudder effect (turning time) in non-turbulent inland waterways is ≤20 seconds. With the rapid development of the shipping industry, the tonnage of ships being built is getting larger and larger, and the power used is also increasing. This has resulted in a situation where there are many ships on inland waterways, with large tonnage and high speed. The hydraulic steering gear with the original single rudder effect function obviously cannot adapt to the current complex waterway navigation speed and flexible steering, and cannot meet the synchronous adaptive switching of the rudder effect of ships under different waterway conditions to achieve fast and efficient ship control. Utility Model Content

[0003] The purpose of this invention is to provide a dual-rudder-effect marine hydraulic steering gear system, which has the advantage of being able to meet the stable and efficient control switching effect of the dual-rudder-effect system and improve the seaworthiness and maneuverability of the ship.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a dual-rudder-effect marine hydraulic steering gear system, comprising a hydraulic module and a steering gear module. The steering gear module includes a rudder handle, a rudder stick fixed to the rudder handle, and a rudder blade connected to the bottom end of the rudder handle. The hydraulic module includes a steering gear cylinder assembly movably connected to the rudder handle, an electric hydraulic oil pump, a hydraulic oil tank, and a hydraulic passage connecting the various parts within the hydraulic module. A hydraulic solenoid directional valve is also connected between the steering gear cylinder assemblies. The hydraulic passage includes an inlet passage and a return passage. A drive directional valve is provided between the hydraulic passage and the electric hydraulic oil pump. The steering gear... The hydraulic cylinder assembly includes a servo cylinder 1 and a servo cylinder 2, which are movably connected to both ends of the rudder handle. The oil inlet passage includes oil passage 1 connecting the electric hydraulic pump and the rodless chamber of servo cylinder 1, oil passage 2 connecting the electric hydraulic pump and the hydraulic solenoid directional valve, and oil passage 3 connecting the hydraulic solenoid directional valve and the rod chamber of servo cylinder 2. The oil return passage includes oil passage 4 connecting the rod chamber of servo cylinder 1 and the hydraulic solenoid directional valve, oil passage 5 connecting the hydraulic solenoid directional valve and the hydraulic oil tank, and oil passage 5 connecting the rodless chamber of servo cylinder 2 and the hydraulic oil tank.

[0005] Furthermore, the top of the rudder handle is equipped with a rudder angle transmitter.

[0006] Furthermore, the hydraulic module also includes an accumulator and a safety valve.

[0007] Furthermore, the hydraulic oil tank is also equipped with an oil filter at the oil inlet end.

[0008] Furthermore, the hydraulic oil tank is also equipped with a cooler at the oil inlet end.

[0009] Furthermore, the hydraulic module also includes an emergency manual pump.

[0010] Through the above technical solution,

[0011] In summary, this utility model has the following beneficial effects: The switchable dual-rudder effect setting allows for different rudder effects to be selected for different channels, speeds, and tonnage loads, greatly improving steering reliability and flexibility. It ensures fast rudder effect under light loads and normal rudder effect at normal speeds under heavy loads, guaranteeing factory torque and normal rudder effect. The electromagnetic directional valve adopts an automatic control mode when energized, relying on the signal provided by the rudder angle transmitter to set the optimal rudder effect zone switching, thereby achieving intelligent control effect. Attached Figure Description

[0012] Figure 1 It is used to illustrate the working principle of existing traditional single rudder effects in the background technology; Figure 2 This is a diagram used to illustrate the working principle of the fast rudder effect mode in the embodiments; Figure 3 This is a diagram illustrating the working principle of the power-assisted steering effect mode in the embodiments. Figure 4 It is used to illustrate the relationship between rudder effect and angle region in the embodiment.

[0013] Reference numerals: 1. Rudder handle; 2. Rudder stock; 3. Rudder blade; 4. Electro-hydraulic pump; 5. Hydraulic oil tank; 6. Hydraulic solenoid directional valve; 7. Drive directional valve; 8. Rudder cylinder one; 9. Rudder cylinder two; 10. Oil circuit one; 11. Oil circuit two; 12. Oil circuit three; 13. Oil circuit four; 14. Oil circuit five; 15. Oil circuit six; 16. Rudder angle transmitter; 17. Accumulator; 18. Safety valve; 19. Oil filter; 20. Cooler; 21. Emergency manual pump. Detailed Implementation

[0014] The present invention will be further described in detail below with reference to the accompanying drawings.

[0015] Example: A dual-rudder-effect marine hydraulic steering gear system, such as Figure 2As shown, the system includes a hydraulic module and a servo module. The hydraulic module drives the servo module to complete the steering action. The servo module includes a rudder handle 1, a rudder stick 2 fixed to the rudder handle 1, and a rudder blade 3 connected to the bottom of the rudder handle 1. The hydraulic module includes a servo cylinder assembly movably connected to the rudder handle 1, an electric hydraulic pump 4, a hydraulic oil tank 5, and hydraulic passages connecting all parts within the hydraulic module. The servo cylinder assembly includes servo cylinder 8 and servo cylinder 9, which are movably connected to both ends of the rudder handle 1. The electric hydraulic pump 4 inputs high-pressure oil into the servo cylinder assembly through the hydraulic passages, driving the rudder handle 1 to rotate and causing the rudder blade 3 to deflect, ultimately completing the steering adjustment.

[0016] In actual ship navigation, different rudder effect modes need to be adapted to different navigation conditions to achieve rapid rudder effect response and efficient steering and return-to-rudder processes under specified requirements. A hydraulic solenoid directional valve 6 is also connected between the rudder cylinder group. The hydraulic solenoid directional valve 6 can switch hydraulic paths according to real-time operating conditions to achieve specified rudder effect mode changes. An electronic rudder angle transmitter 16 is installed at the top of the rudder stick 1. The rudder angle transmitter 16 converts the real-time rotation angle of the rudder stick 2 into a digital signal and feeds it back to the control circuit of the hydraulic solenoid directional valve 6. The circuit state is switched by identifying the pre-set optimal rudder effect area. Specifically, when a turn is required within the 0-20 degree angle range, a rapid rudder effect is used to achieve a fast steering effect; when a turn is required within the 20-45 degree angle range, a power rudder effect mode is used; and when a return-to-rudder maneuver is required within the 45-0 degree angle range, it resets to the rapid rudder effect mode to meet the requirements of efficient steering control response under constant hydraulic flow.

[0017] like Figure 2 , Figure 3 and Figure 4 As shown, the hydraulic passage includes an inlet passage and a return passage. A drive directional valve 7 is provided between the hydraulic passage and the electric hydraulic pump 4. The inlet passage includes an oil line 10 connecting the electric hydraulic pump and the rodless chamber of the first servo cylinder 8, an oil line 2 11 connecting the electric hydraulic pump and the hydraulic solenoid directional valve 6, and an oil line 3 12 connecting the hydraulic solenoid directional valve 6 and the rod chamber of the second servo cylinder 9. The return passage includes an oil line 4 13 connecting the rod chamber of the first servo cylinder 8 and the hydraulic solenoid directional valve 6, an oil line 5 14 connecting the hydraulic solenoid directional valve 6 and the hydraulic oil tank 5, and an oil line 6 15 connecting the rodless chamber of the second servo cylinder and the hydraulic oil tank 5. The switching of the oil inlet and outlet in the hydraulic passage is achieved by switching the power of the drive directional valve 7.

[0018] Taking the rotation of the rudder blade 3 towards the side of the rudder cylinder 29 as an example, when a turn of 0 to 20 degrees is required, the rudder is in the rapid rudder effect mode. The rudder cylinder 18 and the rudder cylinder 29 are connected in series. The electric hydraulic pump 4 injects the hydraulic oil in the hydraulic cylinder into the rodless chamber of the rudder cylinder 18 along the oil circuit 10, which drives the hydraulic rod to extend. At this time, the hydraulic oil in the rod chamber of the rudder cylinder 18 enters the hydraulic solenoid directional valve 6 along the oil circuit 413, and enters the rod chamber of the rudder cylinder 29 from the oil circuit 312. The hydraulic oil in the rodless chamber of the rudder cylinder 29 is continuously squeezed and flows out from the oil circuit 615, and flows back to the hydraulic oil tank 5 through the drive directional valve 7.

[0019] When turning within the 20-45 degree angle range is required, the electronic rudder angle transmitter 16 sends a signal, the hydraulic solenoid directional valve 6 is energized, and it switches to the power-assisted rudder effect mode. The rudder cylinder 1 8 and the rudder cylinder 2 9 are in parallel. At this time, the hydraulic oil output from the electric hydraulic pump 4 enters the rodless chamber of the rudder cylinder 1 8 and the rod chamber of the rudder cylinder 2 9 through oil circuit 1 10 and oil circuit 2 11 respectively, so as to realize the synchronous operation of the hydraulic rods of the two rudder cylinders. At this time, the hydraulic oil in the rod chamber of the rudder cylinder 1 8 enters the hydraulic solenoid directional valve 6 through oil circuit 4 13 and then flows out through oil circuit 5 14. The oil in the rodless chamber of the rudder cylinder 2 9 merges with oil circuit 5 14 through oil circuit 6 15 and flows back to the drive directional valve 7 and then back to the hydraulic oil tank 5.

[0020] Once the steering maneuver is complete, the rapid rudder return process always uses the rapid rudder effect mode. That is, if the initial steering angle is within 0 degrees to 20 degrees, only the reversing valve 7 needs to be switched. The electric hydraulic pump 4 continuously injects oil into the rodless chamber of the rudder cylinder 2 9 along the oil circuit 6 15. The oil in the rod chamber of the rudder cylinder 2 9 is squeezed and returned to the hydraulic solenoid reversing valve 6 through the oil circuit 3 12, and then enters the rod chamber of the rudder cylinder 1 8 through the oil circuit 4 13. The oil in the rodless chamber of the rudder cylinder 1 8 is squeezed and discharged through the oil circuit 10 and returned to the reversing valve 7, and finally enters the hydraulic oil tank 5. Similarly, if the initial steering angle is between 20 degrees and 45 degrees, not only does the reversing valve 7 need to be switched, but the hydraulic solenoid reversing valve 6 is also de-energized and performs a reversing action simultaneously, switching from the power-advanced rudder effect to the rapid rudder effect mode. At this time, the oil supply and return process of the hydraulic circuit is the same as the rudder return process of 0 degrees to 20 degrees.

[0021] Considering the stability of oil circuit pressure during actual operation, the hydraulic module also includes an accumulator 17 and a safety valve 18. The safety valve 18 limits the maximum system pressure to protect the cylinder and pipeline, while the accumulator 17 effectively ensures stable pressure, compensates for instantaneous flow demand, and improves the switching between fast and efficient response during the multi-mode rudder effect response process.

[0022] The hydraulic oil tank 5 is also equipped with an oil filter 19 and a cooler 20 at the oil inlet end. The oil filter 19 ensures the cleanliness of the oil flowing back to the hydraulic oil tank 5 and reduces the possibility of valve blockage. The cooler 20 can effectively achieve the cooling effect and ensure the recycling process of the oil.

[0023] To address emergency situations arising from potential ship electrical system failures, an emergency manual pump 21 was added to the hydraulic module. This pump mechanically ensures a continuous supply of hydraulic fluid to the hydraulic circuit, thereby enabling the ship to perform steering maneuvers effectively and maintain stable rudder performance.

[0024] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A dual-rudder-effect marine hydraulic steering gear system, comprising a hydraulic module and a steering gear module, wherein the steering gear module comprises a rudder handle (1), a rudder stick (2) fixed to the rudder handle (1), and a rudder blade (3) connected to the bottom end of the rudder handle (1), and the hydraulic module comprises a steering gear cylinder assembly movably connected to the rudder handle (1), an electric hydraulic oil pump (4), a hydraulic oil tank (5), and a hydraulic passage connecting the various parts within the hydraulic module, characterized in that: The servo cylinder assembly is also connected to a hydraulic solenoid directional valve (6). The hydraulic passage includes an inlet passage and a return passage. A drive directional valve (7) is provided between the hydraulic passage and the electric hydraulic pump (4). The servo cylinder assembly includes servo cylinder one (8) and servo cylinder two (9). The servo cylinder one (8) and servo cylinder two (9) are movably connected to both ends of the rudder handle (1). The inlet passage includes an oil line one (10) connecting the electric hydraulic pump (4) and the rodless chamber of servo cylinder one (8), and connecting... The oil return passage includes the second oil passage (11) between the electric hydraulic oil pump (4) and the hydraulic solenoid directional valve (6) and the third oil passage (12) between the hydraulic solenoid directional valve (6) and the rod chamber of the second servo cylinder (9). The return oil passage includes the fourth oil passage (13) between the rod chamber of the first servo cylinder (8) and the hydraulic solenoid directional valve (6), the fifth oil passage (14) between the hydraulic solenoid directional valve (6) and the hydraulic oil tank (5), and the sixth oil passage (15) between the rodless chamber of the second servo cylinder (9) and the hydraulic oil tank (5).

2. The dual-rudder-effect marine hydraulic steering gear system according to claim 1, characterized in that: The top of the rudder handle (1) is equipped with an electronic rudder angle transmitter (16).

3. The dual-rudder-effect marine hydraulic steering gear system according to claim 1, characterized in that: The hydraulic module also includes an accumulator (17) and a safety valve (18).

4. The dual-rudder-effect marine hydraulic steering gear system according to claim 1, characterized in that: The hydraulic oil tank (5) is also equipped with an oil filter (19) at the oil inlet end.

5. A dual-rudder-effect marine hydraulic steering gear system according to claim 1, characterized in that: The hydraulic oil tank (5) is also equipped with a cooler (20) at the oil inlet end.

6. A dual-rudder-effect marine hydraulic steering gear system according to claim 1, characterized in that: The hydraulic module also includes an emergency manual pump (21).

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