Variable-frequency steering engine for ship

Abstract

The marine frequency conversion steering engine comprises an equipment body, a variable pump control rod is fixedly connected to the middle of the upper end of the equipment body, a set of limiting follow-up rods are symmetrically and fixedly connected to the front end and the rear end of the variable pump control rod, and transverse guide rods are symmetrically and fixedly connected to the left inner wall and the right inner wall of the upper end of the equipment body. The outer end of the transverse guide rod is slidably connected with a displacement self-sliding outer sleeve, the upper end and the lower end of the displacement self-sliding outer sleeve are symmetrically and fixedly connected with protruding vertical rods, the protruding vertical rods are located between the left limiting follow-up rod and the right limiting follow-up rod, and the left end and the right end of the upper end of the equipment body are symmetrically and fixedly connected with variable-frequency oil pump drivers. According to the scheme, when the steering engine runs, the liquid storage inner cavity outputs the lubricating liquid to the contact part of the displacement self-sliding outer sleeve and the transverse guide rod through the liquid outlet valve port according to an external control terminal instruction. And the lubricating liquid effectively reduces the frictional resistance between the two.

Description

Technical Field

[0001] This utility model relates to a servo motor, and more particularly to a marine variable frequency servo motor used in the field of marine equipment. Background Technology

[0002] In the field of marine navigation, the steering gear, as the core component of the ship's steering system, directly affects the safety and maneuverability of the ship. With the booming development of the shipping industry, the operational needs of ships in different water environments and under different navigation conditions are becoming increasingly complex and diverse, placing more stringent requirements on the performance of steering gears.

[0003] Chinese patent CN207972782U discloses a marine variable frequency steering gear. It includes a motor, an oil pump, a control valve group, a steering mechanism, and a controller. The steering mechanism contains a cylinder with a rotor inside, and the cylinder wall has oil inlet and outlet ports. The controller is connected to the motor and steering mechanism via wires, and the motor's output shaft is connected to the oil pump's input shaft. The key feature is that the motor is a variable frequency motor, and the oil pump is a bidirectional pump. One pump port of the bidirectional pump is connected to one oil inlet and outlet port of the cylinder through the control valve group, and the other pump port is connected to the other oil inlet and outlet port of the cylinder. Using this invention not only reduces space occupation and improves efficiency but also reduces energy consumption. It is suitable for use on steering rudders that control the direction of a ship.

[0004] Because ships are in harsh marine environments for long periods of time, key components of the steering gear, such as sliding connections, are highly susceptible to seawater corrosion and mechanical friction. Traditional steering gears lack effective lubrication and protection measures, resulting in severe wear of components and a significantly shortened service life. Utility Model Content

[0005] The technical problem that this utility model aims to solve is that, due to the fact that ships are in a harsh marine environment for a long time, the key components of the steering gear, such as sliding connection parts, are easily affected by seawater corrosion, mechanical friction and other factors. Traditional steering gears lack effective lubrication and protection measures, resulting in severe wear of components and a significantly shortened service life.

[0006] To address the aforementioned problems, this utility model provides a marine variable frequency steering gear, comprising a device body, a variable pump control rod fixedly connected to the upper middle part of the device body, a set of limit follower rods symmetrically fixedly connected to the front and rear ends of the variable pump control rod, transverse guide rods symmetrically fixedly connected to the left and right inner walls of the upper end of the device body, a displacement self-slip sleeve slidably connected to the outer end of the transverse guide rod, a protruding upright rod symmetrically fixedly connected to the upper and lower ends of the displacement self-slip sleeve, the protruding upright rod being positioned between the two corresponding left and right limit follower rods, a variable frequency oil pump driver symmetrically fixedly connected to the left and right ends of the upper end of the device body, a connecting horizontal pipe connected to the output end of the variable frequency oil pump driver, a liquid storage cavity installed at the lower end of the upper limit follower rod, a liquid outlet valve port fixedly connected to the lower middle part of the liquid storage cavity, and side hollow rings symmetrically fixedly connected to the left and right ends of the displacement self-slip sleeve, with multiple annularly spaced silicone flexible columns arranged on the outer side of the side hollow rings.

[0007] In the aforementioned marine variable frequency steering gear, the fluid reservoir in this design, during steering gear operation, outputs lubricating fluid through the outlet valve to the contact area between the displacement self-slip sleeve and the transverse guide rod, based on commands from the external control terminal. This lubricating fluid effectively reduces the frictional resistance between the two components.

[0008] As a further improvement of this application, a flexible silicone column is fixedly connected to an applicator flexible contact head at the end away from the side hollow ring, and the liquid outlet is located at the top of the vertical axis of the transverse guide rod.

[0009] As a further improvement of this application, an electric push rod is fixedly connected to the inner wall of the side hollow ring, and a linkage push ring is fixedly connected to the output end of the electric push rod.

[0010] As a further improvement of this application, the outer side of the hollow ring is provided with a plurality of openings and slots, and the inner sidewall of the openings and slots is fixedly connected with an oblique path pressure frame.

[0011] As another improvement of this application, the silicone flexible column and the linkage push ring are interconnected, and the silicone flexible column penetrates through the inside and outside of the opening groove.

[0012] As a further improvement to this application, the silicone flexible column is in contact with the inclined path pressure frame, and the inner wall of the limiting follower rod is fixedly connected with a protruding locking block.

[0013] As a further improvement to this application, a grooved block is fixedly connected to one end of the liquid storage cavity near the protruding block, and the grooved block and the protruding block are detachably connected.

[0014] In summary, in this design, during servo operation, the liquid reservoir outputs lubricant through the outlet valve to the contact area between the self-slipping sleeve and the transverse guide rod via external control terminal commands. This lubricant effectively reduces frictional resistance between the two components, minimizing wear during long-term operation. During the sliding of the self-slipping sleeve, the electric push rod, linkage push ring, silicone flexible column, and application flexible contact head within the side hollow ring work together to more comprehensively and evenly apply the lubricant from the outlet valve to the outer side of the transverse guide rod. Continuous and efficient lubrication ensures stable sliding of the self-slipping sleeve on the transverse guide rod, guaranteeing the servo maintains good working condition during long-term operation and reducing the probability of malfunctions caused by poor lubrication. Attached Figure Description

[0015] Figure 1 This is an isometric view of the device body according to the first embodiment of this application;

[0016] Figure 2 This is a partially truncated enlarged view of the device body according to the first embodiment of this application;

[0017] Figure 3 This is a schematic diagram of the liquid storage cavity in the first and second embodiments of this application;

[0018] Figure 4 This is an enlarged view of the displacement self-slip jacket according to the first embodiment of this application;

[0019] Figure 5 This is a side cross-sectional view of the hollow ring according to the first embodiment of this application;

[0020] Figure 6 This is a diagram illustrating the linkage push-loop return state of the first embodiment of this application.

[0021] Figure 7 This is a schematic diagram of the coating flexible contact head according to the first embodiment of this application.

[0022] Explanation of the labels in the diagram:

[0023] 1. Equipment body; 2. Horizontal guide rod; 3. Variable pump control rod; 4. Limit follower rod; 5. Displacement self-sliding outer sleeve; 6. Protruding upright rod; 7. Variable frequency oil pump driver; 8. Connecting horizontal pipe; 9. Liquid storage cavity; 10. Liquid outlet valve port; 11. Protruding locking block; 12. Groove locking block; 13. Side hollow ring; 14. Silicone flexible column; 15. Opening groove; 16. Angled path pressure frame; 17. Linkage push ring; 18. Electric push rod; 19. Coating flexible contact head. Detailed Implementation

[0024] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0025] First implementation method:

[0026] Figures 1-6 A marine variable frequency steering gear is shown, including a device body 1. A variable pump control rod 3 is fixedly connected to the middle of the upper end of the device body 1. A set of limit follower rods 4 are symmetrically fixedly connected to the front and rear ends of the variable pump control rod 3. A transverse guide rod 2 is symmetrically fixedly connected to the left and right inner walls of the upper end of the device body 1. A displacement self-slip sleeve 5 is slidably connected to the outer end of the transverse guide rod 2. A protruding upright rod 6 is symmetrically fixedly connected to the upper and lower ends of the displacement self-slip sleeve 5. The protruding upright rod 6 is located between the two corresponding limit follower rods 4 on the left and right. A variable frequency oil pump driver 7 is symmetrically fixedly connected to the left and right ends of the upper end of the device body 1. A connecting horizontal pipe 8 is connected to the output end of the variable frequency oil pump driver 7. A liquid storage cavity 9 is installed at the lower end of the upper limit follower rod 4. A liquid outlet valve port 10 is fixedly connected to the middle of the lower end of the liquid storage cavity 9. A side hollow ring 13 is symmetrically fixedly connected to the left and right ends of the displacement self-slip sleeve 5. A plurality of annularly spaced silicone flexible columns 14 are arranged on the outer side of the side hollow ring 13.

[0027] Figures 2-7 The silicone flexible column 14 is shown to be fixedly connected to a flexible application contact head 19 at one end away from the side hollow ring 13. The liquid outlet 10 is located at the top of the vertical axis of the transverse guide rod 2. An electric push rod 18 is fixedly connected to the inner wall of the side hollow ring 13. A linkage push ring 17 is fixedly connected to the output end of the electric push rod 18. Multiple opening slots 15 are opened in an annular shape on the outer side of the side hollow ring 13. An oblique path pressure frame 16 is fixedly connected to the inner wall of the opening slot 15. The silicone flexible column 14 and the linkage push ring 17 are interconnected, and the silicone flexible column 14 penetrates the inside and outside of the opening slot 15 and is in contact with the oblique path pressure frame 16.

[0028] Figure 1-7 This diagram illustrates that when the ship's bridge issues a steering command, the command signal is transmitted to the variable pump control lever 3, which in turn drives the limit follower lever 4 to change position accordingly. The transverse guide rods 2, which are symmetrically fixed on the left and right inner walls of the upper end of the equipment body 1, provide a sliding track for the displacement self-sliding sleeve 5. The sliding of the displacement self-sliding sleeve 5 on the transverse guide rod 2 is an important form of motion to realize the relevant functions of the steering gear. When the limit follower lever 4 moves due to the drive of the variable pump control lever 3, it will indirectly affect the sliding state of the displacement self-sliding sleeve 5 on the transverse guide rod 2 through its interaction with the protruding upright rod 6. The variable frequency oil pump driver 7, which is symmetrically arranged on the left and right ends of the upper end of the equipment body 1, serves as a power output component. The connecting horizontal pipe 8 connected to its output end transmits the power generated by the variable frequency oil pump driver 7 to the relevant components, providing power support for the operation of the entire steering gear system.

[0029] The liquid storage cavity 9 is installed at the lower end of the upper limit follower rod 4. The liquid outlet valve 10 is fixed at the middle of the lower end of the liquid storage cavity 9 and is located at the top of the vertical axis of the transverse guide rod 2. When the servo motor is running, the external control terminal sends an opening command to the liquid outlet valve 10. At this time, the lubricating fluid in the liquid storage cavity 9 is output through the liquid outlet valve 10 under the action of gravity and possible pressure. The output lubricating fluid acts on the contact part between the displacement self-slip sleeve 5 and the transverse guide rod 2, assisting the displacement self-slip sleeve 5 to slide on the outside of the transverse guide rod 2, effectively reducing the frictional resistance between the two, ensuring the smooth operation of the mechanism, reducing component wear, and improving the working efficiency and service life of the servo motor.

[0030] During the left and right sliding of the displacement self-sliding sleeve 5, the output end of the electric push rod 18 is connected to the linkage push ring 17. When the electric push rod 18 receives the control signal, it starts and pushes the linkage push ring 17 outward. The outward movement of the linkage push ring 17 drives the silicone flexible column 14 connected to it to move outward synchronously. The coating flexible contact head 19 fixed at the end of the silicone flexible column 14 away from the side hollow ring 13, under the push of the silicone flexible column 14, comes into contact with the outside of the transverse guide rod 2. In this way, the coating flexible contact head 19 can further evenly coat the lubricant output from the outlet valve 10 and attached to the surface of the transverse guide rod 2, so that the lubricant covers the outside of the transverse guide rod 2 more comprehensively and evenly, enhances the lubrication effect, and ensures that the sliding of the displacement self-sliding sleeve 5 on the transverse guide rod 2 remains smooth.

[0031] Meanwhile, the multiple annular slots 15 on the outer side of the hollow ring 13 and the inclined path pressure frame 16 fixed on its inner sidewall cooperate with the silicone flexible column 14. As the silicone flexible column 14 is pushed outward by the linkage push ring 17, it passes through the inside and outside of the slots 15 and comes into contact with the inclined path pressure frame 16. According to its special inclined structure design, the inclined path pressure frame 16 applies a lateral force to the silicone flexible column 14, tilting and guiding it closer to the transverse guide rod 2. This guiding effect allows the silicone flexible column 14 and the flexible contact head 19 at its end to act more accurately on the surface of the transverse guide rod 2, further optimizing the uniformity of the lubricant and improving lubrication efficiency and quality.

[0032] Second implementation method:

[0033] Figure 3This invention relates to a marine variable frequency steering gear. A protruding locking block 11 is fixedly connected to the inner wall of a limiting follower rod 4. A recessed locking block 12 is fixedly connected to one end of a liquid storage cavity 9 near the protruding locking block 11. The recessed locking block 12 and the protruding locking block 11 are detachably connected. The protruding locking block 11 fixed to the inner wall of the limiting follower rod 4 and the recessed locking block 12 fixed to the end of the liquid storage cavity 9 near the protruding locking block 11 are detachably connected to connect the liquid storage cavity 9 and the limiting follower rod 4. When replenishing the liquid in the liquid chamber 9, maintenance personnel can easily separate the grooved locking block 12 from the protruding locking block 11 to remove the liquid storage chamber 9 for replenishment. After replenishment, the liquid storage chamber 9 is reconnected to the limit follower rod 4 through the grooved locking block 12 and the protruding locking block 11 to restore the normal working state of the servo motor. This detachable connection method greatly improves the convenience of servo motor maintenance, reduces maintenance costs, and ensures the reliability of the servo motor during long-term operation.

[0034] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A marine variable frequency rudder engine, characterized by: Including the device body (1), the upper end of the device body (1) is fixedly connected with a variable pump control rod (3), the front and rear ends of the variable pump control rod (3) are symmetrically fixedly connected with a set of limit follow-up rods (4), the upper end of the device body (1) is symmetrically fixedly connected with a transverse guide rod (2) on the left and right inner walls, the outer end of the transverse guide rod (2) is slidably connected with a displacement self-sliding sleeve (5), the upper and lower ends of the displacement self-sliding sleeve (5) are symmetrically fixedly connected with protruding vertical rods (6), the protruding vertical rods (6) are located between the left and right corresponding two limit follow-up rods (4), the upper end of the device body (1) is symmetrically fixedly connected with a variable frequency oil pump driver (7) on the left and right ends, the output end of the variable frequency oil pump driver (7) is connected with a connecting cross pipe (8), the lower end of the limit follow-up rod (4) located above is provided with a liquid storage cavity (9), the lower end of the liquid storage cavity (9) is fixedly connected with a liquid outlet valve port (10) in the middle, the left and right ends of the displacement self-sliding sleeve (5) are symmetrically fixedly connected with a side hollow ring (13), the outer side of the side hollow ring (13) is provided with a plurality of annular equidistantly arranged silica gel flexible columns (14).

2. The marine variable frequency steering gear according to claim 1, characterized in that: The end of the silica gel flexible column (14) away from the side hollow ring (13) is fixedly connected with a smearing flexible contact head (19), and the liquid outlet valve port (10) is located at the top of the vertical axis of the transverse guide rod (2).

3. The marine variable frequency steering gear according to claim 1, characterized in that: The inner side wall of the side hollow ring (13) is fixedly connected with an electric push rod (18), and the output end of the electric push rod (18) is fixedly connected with a linkage push ring (17).

4. The marine variable frequency steering gear according to claim 3, characterized in that: A plurality of opening grooves (15) are annularly formed on the outer side of the side hollow ring (13), and the inner side wall of the opening groove (15) is fixedly connected with an inclined path pressing frame (16).

5. A marine variable frequency steering gear according to claim 4, characterised in that: The silica gel flexible column (14) and the linkage push ring (17) are connected with each other, and the silica gel flexible column (14) penetrates in and out of the opening groove (15).

6. A marine variable frequency steering gear according to claim 5, characterised in that: The silica gel flexible column (14) and the inclined path pressing frame (16) are in contact with each other, and the inner side wall of the limit follow-up rod (4) is fixedly connected with a protruding clamping block (11).

7. A marine variable frequency steering gear according to claim 6, characterised in that: The end of the liquid storage cavity (9) close to the protruding clamping block (11) is fixedly connected with a recessed clamping block (12), and the recessed clamping block (12) and the protruding clamping block (11) are detachably connected.

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