A steering gear device for ships that is easy to load and unload

Abstract

The present invention relates to the technical field of steering gear, and discloses a steering gear device for a ship that is easy to load and unload, comprising a rudder shaft, a rudder blade, a mounting tube, a limiting assembly, and a driving assembly; the rudder shaft is provided with a plurality of limiting groove groups along its length; the rudder blade is provided with a mounting groove inside; the mounting tube comprises an inner tube, an outer tube, and a plurality of connecting seats, the outer wall of the outer tube being connected to the inner wall of the mounting groove, the plurality of connecting seats being arranged between the inner tube and the outer tube, and a mounting cavity being defined between two adjacent connecting seats; the limiting assembly comprises: at least one limiting hole and a limiting rod provided on the inner tube, the limiting rod sliding in the limiting hole and selectively engaging with the corresponding limiting groove group; the driving assembly is used to simultaneously drive the plurality of limiting rods to slide in the limiting hole. The present invention can conveniently and quickly load and unload the rudder shaft and the rudder blade, facilitates the disassembly and replacement of the rudder shaft, and can improve the stability of the connection between the rudder shaft and the mounting tube, so that the steering gear can work better.

Description

Technical Field

[0001] The present invention relates to the technical field of steering gears, and more particularly to a steering gear device for ships which is easy to load and unload. Background Art

[0002] When a ship or a submarine is sailing, it needs to use a steering gear to control its heading. The steering gear is usually composed of a power source, a rudder shaft and rudder blades. The power source drives the rudder shaft to drive the rudder blades to rotate, thereby changing the heading of the ship or the submarine. As an important force transmission mechanism, the rudder shaft is subjected to a large load and is often damaged. Therefore, it is inevitable that the rudder shaft of a ship or a submarine will be replaced during its service.

[0003] Currently, there are two main methods for connecting rudder shafts and rudder blades: keyed and ground with a tapered surface. Both methods rely on machines for installation and removal, relying on massive hammering and pulling forces. These methods require a complex, time-consuming, and complex process involving pre-assembly, keyway marking, centering, manual hammering, and coaxiality testing. Summary of the Invention

[0004] The present invention provides a steering gear device for a ship that is easy to load and unload, thereby solving the technical problems in the related art that the rudder shaft is easily damaged and the replacement steps are complicated.

[0005] The present invention provides a steering gear device for a ship that is easy to load and unload, comprising: a rudder shaft, wherein the rudder shaft is provided with a plurality of limit groove groups at intervals along the length direction of the rudder shaft; a rudder blade, wherein a mounting groove with an open side and a circular cross-section is provided inside the rudder blade; a mounting tube, comprising: an inner tube, an outer tube and a plurality of connecting seats, the outer tube being arranged outside the inner tube and having an outer wall connected to the inner wall of the mounting groove, the plurality of connecting seats being arranged between the inner tube and the outer tube at intervals along the axial direction of the inner tube, and a mounting cavity being defined between two adjacent connecting seats; a plurality of limit assemblies, which correspond one-to-one to the plurality of mounting cavities and the plurality of limit groove groups, each of the limit assemblies being arranged in a corresponding mounting cavity, the limit assemblies comprising: at least one limit hole provided on the inner tube and a limit rod slidably connected to the limit hole, the limit rod sliding in the limit hole and selectively engaging with the corresponding limit groove group to selectively connect the rudder shaft to the mounting tube; and a drive assembly for simultaneously driving the plurality of limit rods to slide in the limit holes.

[0006] As a further improvement of the present invention, each of the limit slot groups includes at least one limit slot, the number of limit holes and limit rods in each of the limit components is the same as and corresponds one to one to the number of limit slots in each corresponding limit slot group, one end of the limit rod is slidably connected in the corresponding limit hole to selectively cooperate with the corresponding limit slot, and the other end of the limit rod extends into the corresponding mounting cavity.

[0007] As a further improvement of the present invention, the cross-sectional shapes of the limiting hole and the limiting rod in the axial direction of the inner tube are both T-shaped, and the ends with smaller cross-sectional dimensions of the limiting hole and the limiting rod are both arranged close to the rudder shaft, a first step portion is provided on the limiting hole, a second step portion is provided on the limiting rod, and a first elastic member is provided between the first step portion and the second step portion.

[0008] As a further improvement of the present invention, the driving assembly includes: a power assembly and multiple driving rings, the multiple driving rings correspond one-to-one to the multiple limit assemblies, the multiple driving rings are all slidably connected to the inner tube, and are all arranged on the side of the corresponding limit rod close to the opening of the mounting groove, the end face of the driving ring facing the corresponding limit rod is an inclined surface, and the power assembly is used to simultaneously drive multiple driving rings to squeeze the corresponding limit rod; the power assembly includes: a pressure plate of an annular structure and at least one driving rod, the axis of the driving rod is parallel to the axis of the inner tube, the driving rod is slidably connected to the connecting seat and is fixedly connected to the multiple driving rings at the same time, one end of the driving rod passes through the outer tube and is connected to the pressure plate, and the pressure plate and the outer tube are respectively provided with a first connecting plate and a second connecting plate at one end close to the pressure plate, and the first connecting plate and the second connecting plate are detachably connected.

[0009] As a further improvement of the present invention, the end surface of the limiting rod facing the corresponding driving ring is an inclined surface, and the inclined surface is parallel to the inclined surface of the corresponding driving ring.

[0010] As a further improvement of the present invention, at least one sleeve is provided on the connecting seat near the bottom of the mounting groove. The number of the sleeves is the same as that of the driving rods and they correspond one-to-one to the driving rods. The other end of the driving rod is slidably connected in the corresponding sleeve, and a second elastic member is provided between the other end of the driving rod and the bottom of the sleeve.

[0011] As a further improvement of the present invention, there are multiple driving rods, and the multiple driving rods are distributed in a circular array about the axis of the inner tube.

[0012] As a further improvement of the present invention, the connecting seat is an annular structure, the inner diameter of the connecting seat is the same as the outer diameter of the inner tube, and the outer diameter of the connecting seat is the same as the inner diameter of the outer tube.

[0013] As a further improvement of the present invention, the inner tube and the outer tube are both tubular structures with one end open and the other end closed. A first cavity is provided between the closed end of the inner tube and the closed end of the outer tube. The closed end of the inner tube is provided with a plurality of through holes connected to the first cavity. At least one flow channel is provided inside the outer tube, one end of the flow channel is connected to the first cavity, and the other end of the flow channel is connected to the end face of the open end of the outer tube. At least one connecting tube is provided on the pressure plate, the connecting tubes correspond one-to-one to the flow channels, and the connecting tubes selectively seal the other end of the corresponding flow channel.

[0014] As a further improvement of the present invention, a second cavity is opened inside the pressure plate, the second cavity is connected to the connecting pipe, and an air inlet connected to the second cavity is opened on the side wall of the pressure plate away from the inner tube, and a seal is provided at the air inlet.

[0015] The beneficial effects of the present invention are:

[0016] 1. The present invention provides a mounting groove inside the rudder blade, in which a mounting tube is fixedly connected. By providing a plurality of limiting rods in the mounting tube that selectively cooperate with the upper limit groove on the rudder shaft, the rudder shaft and the rudder blade can be conveniently and quickly installed and removed, thereby facilitating the removal and replacement of the rudder shaft. In addition, the provision of a plurality of limiting rods and a plurality of limiting grooves can improve the stability of the connection between the rudder shaft and the mounting tube, thereby enabling the steering gear to work better.

[0017] 2. The present invention provides a first cavity between the inner tube and the outer tube, and provides a flow channel in the outer tube that communicates with the first cavity. In this way, the air in the inner tube can be discharged through the first cavity and the flow channel by the rudder shaft during installation. As a result, when the rudder shaft tends to move outward, the internal air pressure of the inner tube tends to decrease, thereby hindering the axial movement of the rudder shaft and making the connection between the rudder shaft and the rudder blade more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a steering gear device for a ship that is easy to load and unload according to an embodiment of the present invention;

[0019] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 This is a schematic diagram of a partial top view cross-sectional structure of a steering gear device for a ship that is easy to load and unload according to an embodiment of the present invention;

[0021] Figure 4 yes Figure 3 Enlarged view of point B in the middle;

[0022] Figure 5 yes Figure 3 Enlarged view of point C in the middle;

[0023] Figure 6 This is a schematic diagram of a partial side cross-sectional structure of a steering gear device for a ship that is easy to load and unload according to an embodiment of the present invention;

[0024] Figure 7 yes Figure 6 Enlarged view of point D in the middle;

[0025] Figure 8 This is a schematic diagram of a first main cross-sectional structure of a steering gear device for a ship that is easy to load and unload according to an embodiment of the present invention;

[0026] Figure 9 This is a schematic diagram of a second main cross-sectional structure of a steering gear device for a ship that is easy to load and unload according to an embodiment of the present invention;

[0027] Figure 10 This is a schematic diagram of a third main cross-sectional structure of a steering gear device for a ship that is easy to load and unload according to an embodiment of the present invention;

[0028] Figure 11 This is a schematic diagram of a fourth main cross-sectional structure of a steering gear device for a ship that is easy to load and unload according to an embodiment of the present invention.

[0029] In the figure: 1. rudder shaft; 11. limiting groove group; 111. limiting groove; 2. rudder blade; 21. mounting groove; 3. mounting tube; 31. inner tube; 311. through hole; 32. outer tube; 321. second connecting plate; 322. flow channel; 33. connecting seat; 331. sleeve; 34. mounting cavity; 35. second elastic member; 36. first cavity; 4. limiting assembly; 41. limiting hole; 411. first step; 42. limiting rod; 421. second step; 43. first elastic member; 5. driving assembly; 51. driving ring; 52. power assembly; 521. pressure plate; 5211. first connecting plate; 5212. connecting tube; 5213. second cavity; 5214. air inlet; 522. driving rod. DETAILED DESCRIPTION

[0030] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed solely to enable those skilled in the art to better understand and implement the subject matter described herein, and that the functions and arrangements of the elements discussed may be varied without departing from the scope of this specification. Various examples may omit, substitute, or add various processes or components as needed. In addition, features described with respect to some examples may also be combined in other examples.

[0031] like Figures 1-11As shown, a steering gear device for a ship that is easy to load and unload includes: a rudder shaft 1, a rudder blade 2, a mounting tube 3, multiple limit assemblies 4 and a drive assembly 5.

[0032] The rudder shaft 1 primarily serves as a transmission mechanism, transferring power from the steering gear's power source to the rudder blade 2. It should be noted that the power source is prior art and is not discussed in detail in this application. The rudder blade 2 primarily serves to change the vessel's course. The mounting tube 3 primarily serves as a connection and transmission mechanism. The stopper assembly 4 primarily serves as a limiter. The drive assembly 5 primarily serves as a driver.

[0033] Specifically, if Figure 5 and Figure 10 As shown, the rudder shaft 1 is provided with a plurality of limiting groove groups 11 spaced apart along its length. Each limiting groove group 11 may include at least one limiting groove 111. The limiting groove 111 may be cylindrical in shape, and the axial direction of the limiting groove 111 is arranged along the radial direction of the rudder shaft 1. The plurality of limiting groove groups 11 are spaced apart, so that the distribution of the plurality of limiting groove groups 11 on the rudder shaft 1 is more uniform, and the impact of the excessive density of the limiting groove groups 11 on the structural strength of the rudder shaft 1 can be reduced. The limiting groove 111 mainly serves as a limiter. The limiting groove 111 can cooperate with the limiting assembly 4 to connect the rudder shaft 1 to the mounting tube 3, thereby achieving the connection between the rudder shaft 1 and the rudder blade 2.

[0034] As an optional embodiment, Figure 10 As shown, each limiting groove group 11 includes multiple limiting grooves 111, and the multiple limiting grooves 111 are distributed in a circular array about the axis of the rudder shaft 1. The provision of multiple limiting grooves 111 can increase the number of connection points between the limiting assembly 4 and the rudder shaft 1, thereby making the connection between the limiting assembly 4 and the rudder shaft 1 more secure and stable. The multiple limiting grooves 111 are distributed in a circular array about the axis of the rudder shaft 1. This makes the provision of the multiple limiting grooves 111 more comprehensive, makes the force on the rudder shaft 1 more balanced, and facilitates the protection of the rudder shaft 1. In this embodiment, the number of limiting grooves 111 in each limiting groove group 11 can be four.

[0035] In addition, if Figure 3 As shown, the interior of the rudder blade 2 is provided with a mounting groove 21, open on one side and circular in cross section, along its length. The mounting groove 21 primarily serves a mounting function. Its one-side open structure facilitates the installation of the mounting tube 3 and the rudder shaft 1. The circular cross-section of the mounting groove 21 along its length better matches the shapes of the mounting tube 3 and the rudder shaft 1, facilitating installation. It should be noted that after the mounting tube 3 is installed in the mounting groove 21, a portion of it protrudes outside the groove 21, facilitating the subsequent installation and configuration of the drive assembly 5.

[0036] Further, if Figure 3 and Figure 6 As shown, the mounting tube 3 is fixedly connected in the mounting groove 21 , which can make the connection between the mounting tube 3 and the rudder blade 2 more secure and stable.

[0037] like Figure 3-Figure 5 As shown, the mounting tube 3 includes an inner tube 31, an outer tube 32, and a plurality of connecting seats 33. The inner tube 31, outer tube 32, and mounting groove 21 can be arranged concentrically. That is, the axes of the inner tube 31, outer tube 32, and mounting groove 21 are collinear. This arrangement is more rational and facilitates installation of the mounting tube 3 within the mounting groove 21. Specifically, the outer tube 32 is disposed outside the inner tube 31, and its outer wall is fixedly connected to the inner wall of the mounting groove 21. That is, the outer tube 32 is sleeved outside the inner tube 31 and wraps around the inner tube 31. The outer wall of the outer tube 32 is fixedly connected to the inner wall of the mounting groove 21, that is, the outer circumferential wall of the outer tube 32 is fixedly connected to the inner circumferential wall of the mounting groove 21. This ensures a more secure and stable connection between the outer tube 32 and the rudder blade 2, thereby ensuring a more secure and stable connection between the outer tube 32 and the rudder blade 2.

[0038] Moreover, a plurality of connecting seats 33 are arranged between the inner tube 31 and the outer tube 32 at intervals along the axial direction of the inner tube 31, and an installation cavity 34 is defined between two adjacent connecting seats 33. It should be noted that the structure of the connecting seat 33 can be an annular structure, and the outer diameter size of the connecting seat 33 is the same as the inner diameter size of the outer tube 32, and the inner diameter size of the connecting seat 33 is the same as the outer diameter size of the inner tube 31. Connecting the connecting seat 33 between the inner tube 31 and the outer tube 32 can make the connection between the inner tube 31 and the outer tube 32 more stable, thereby making the structure of the installation tube 3 more secure and stable. In addition, the gap between two adjacent connecting seats 33 is set at intervals, and the gap therein defines the installation cavity 34. The installation cavity 34 mainly serves the purpose of installation, and part of the structure of the limit assembly 4 can be installed in the installation cavity 34. The number of connecting seats 33 in this embodiment is four, so that three installation cavities 34 can be defined.

[0039] Specifically, the plurality of position-limiting assemblies 4 correspond one-to-one with the plurality of mounting cavities 34 and the plurality of position-limiting groove groups 11, and each position-limiting assembly 4 is disposed within a corresponding mounting cavity 34. In other words, each mounting cavity 34 is provided with a position-limiting assembly 4, and each mounting cavity 34 is connected to a position-limiting groove group 11. The position-limiting assembly 4 can engage with the corresponding position-limiting groove group 11 within the corresponding mounting cavity 34 for position-limiting cooperation. Since there are three mounting cavities 34 in this embodiment, there are also three position-limiting assemblies 4 and three position-limiting groove groups 11.

[0040] The limiting assembly 4 includes at least one limiting hole 41 and at least one limiting rod 42. The limiting hole 41 is formed on the inner tube 31 and arranged radially along the inner tube 31. Each limiting groove group 11 includes at least one limiting groove 111. The number of limiting holes 41 and limiting rods 42 in each limiting assembly 4 is the same as the number of limiting grooves 111 in each corresponding limiting groove group 11, and they correspond one-to-one. One end of the limiting rod 42 slides into the corresponding limiting hole 41 to selectively engage the corresponding limiting groove 111, thereby selectively connecting the rudder shaft 1 to the mounting tube 3. The other end of the limiting rod 42 extends into the corresponding mounting cavity 34.

[0041] It should be noted that since the number of limiting holes 41, limiting rods 42 and the limiting grooves 111 in the corresponding limiting groove group 11 is the same and corresponds one to one, the number of limiting holes 41 and limiting rods 42 in a single limiting component 4 in this embodiment is also four.

[0042] One end of the limiting rod 42 slides into the corresponding limiting hole 41 to selectively engage with the corresponding limiting groove 111. The other end of the limiting rod 42 extends into the corresponding mounting cavity 34. In other words, one end of the limiting rod 42 can engage with or not engage with the corresponding limiting groove 111. Specifically, when the rudder shaft 1 needs to be connected to the rudder blade 2, the drive assembly 5 can be activated to press the other end of the limiting rod 42 into the corresponding limiting hole 41. This causes one end of the limiting rod 42 to move radially along the rudder shaft 1 toward the corresponding limiting groove 111, thereby achieving a fixed position between the limiting rod 42 and the corresponding limiting groove 111. When the rudder shaft 1 needs to be replaced or removed, the drive assembly 5 can be reactivated to release the pressure on the other end of the limiting rod 42, allowing one end of the limiting rod 42 to return to the corresponding limiting hole 41. This provides convenient and flexible use.

[0043] Furthermore, if Figure 3-Figure 5As shown, the drive assembly 5 includes a power assembly 52 and a plurality of drive rings 51, and the plurality of drive rings 51 correspond one-to-one to the plurality of limit assemblies 4. That is, in this embodiment, the number of drive rings 51 is also three. The plurality of drive rings 51 are all slidably connected to the inner tube 31, and are all arranged on the side of the corresponding limit rod 42 close to the opening of the mounting groove 21, and the end surface of the drive ring 51 facing the limit rod 42 is set as an inclined surface. The drive ring 51 is slidably connected to the inner tube 31, so that the power assembly 52 can be used to drive the drive ring 51 to move axially along the inner tube 31. The plurality of drive rings 51 are all arranged on the side of the corresponding limit rod 42 close to the opening of the mounting groove 21. In this way, the other end of the corresponding limit rod 42 can be squeezed by simply pressing the drive ring 51 inward, which is more convenient to operate. In addition, the end surface of the driving ring 51 facing the corresponding limit rod 42 is set as an inclined surface. The specific structure of the inclined surface is as follows: in the radial direction along the rudder shaft 1, the distance between the side of the inclined surface away from the corresponding limit rod 42 and the axis of the rudder shaft 1 is smaller than the distance between the side of the inclined surface close to the corresponding limit rod 42 and the axis of the rudder shaft 1. In this way, when the driving ring 51 squeezes the other end of the limit rod 42, the inclined surface can play a guiding role, thereby saving more effort during operation and making the operation more convenient.

[0044] It should be noted that if Figure 3-Figure 5 as well as Figure 8 As shown, the power assembly 52 can simultaneously drive multiple drive rings 51 to squeeze the corresponding limit rods 42. The power assembly 52 includes: an annular pressure plate 521 and at least one drive rod 522. The axis of the drive rod 522 is parallel to the axis of the inner tube 31. The drive rod 522 is slidably connected to the connecting seat 33 and is also fixedly connected to the multiple drive rings 51. One end of the drive rod 522 passes through the outer tube 32 and is fixedly connected to the pressure plate 521. The pressure plate 521 and the end of the outer tube 32 near the pressure plate 521 are respectively fixedly connected to a first connecting plate 5211 and a second connecting plate 321. The first connecting plate 5211 and the second connecting plate 321 are detachably connected. It should be noted that the axis of the pressure plate 521 can be colinear with the axis of the inner tube 31, and the inner diameter of the pressure plate 521 needs to be greater than or equal to the diameter of the inner tube 31 to prevent the pressure plate 521 from interfering with the installation of the rudder shaft 1. During use, the pressure plate 521 is pushed toward the inner tube 31, that is, inward. The movement of the pressure plate 521 drives all the drive rings 51 toward the interior of the mounting groove 21 via the drive rods 522, thereby simultaneously squeezing multiple limiting rods 42 to achieve a limited connection between the inner tube 31 and the rudder shaft 1, thereby achieving a fixed connection between the rudder blade 2 and the rudder shaft 1. After the connection, the first connecting plate 5211 and the second connecting plate 321 can be connected with bolts to fix the position of the drive rings 51 and make the structure more stable.

[0045] As an optional embodiment, Figure 5 As shown, the end surface of the limiting rod 42 facing the corresponding drive ring 51 is also configured as an inclined surface, and its inclined surface is parallel to the inclined surface of the corresponding drive ring 51. This can further reduce the resistance of the limiting rod 42 to the drive ring 51, making it easier for the drive ring 51 to squeeze the limiting rod 42, saving more effort and making operation more convenient.

[0046] As an optional embodiment, Figure 9 As shown, there can be multiple drive rods 522, and the multiple drive rods 522 are distributed in a circular array about the axis of the inner tube 31. This allows the drive ring 51 to be pushed from multiple positions when the pressure plate 521 is pushed, thereby making the force applied to the drive ring 51 more balanced and comprehensive, and allowing the drive ring 51 to move more axially along the inner tube 31. In this embodiment, there are three drive rods 522, but other suitable numbers are also possible.

[0047] As an optional embodiment, Figure 5 As shown, the limiting hole 41 and limiting rod 42 both have a T-shaped cross-section along the axis of the inner tube 31. The smaller ends of the limiting hole 41 and limiting rod 42 are located near the rudder shaft 1. A first step 411 is provided on the limiting hole 41, and a second step 421 is provided on the limiting rod 42. A first elastic member 43 is disposed between the first step 411 and the second step 421. The first elastic member 43 primarily serves to reset the rudder shaft 1. When the rudder shaft 1 needs to be replaced or disassembled, the driving assembly 5 releases the squeezing force of the driving ring 51 on the limiting rod 42. The elastic force of the first elastic member 43 allows one end of the limiting rod 42 to retract into the corresponding limiting hole 41, thereby releasing the limiting force of the limiting rod 42 on the rudder shaft 1. The first elastic member 43 can be a spring, but it can also be other suitable components.

[0048] As an optional embodiment, Figure 6 and Figure 7As shown, at least one sleeve 331 is provided on the connecting seat 33 near the bottom of the mounting groove 21. The number of sleeves 331 is the same as the number of drive rods 522, and they correspond one-to-one with each other. The other end of the drive rod 522 is slidably connected within the corresponding sleeve 331. A second elastic member 35 is provided between the other end of the drive rod 522 and the bottom of the sleeve 331. The second elastic member 35 also primarily serves to reset the drive rod. It should be noted that, in this case, the drive rod 522 is slidably connected to all but the last connecting seat 33 along the mounting groove 21, moving from outside to inside. When the pressing plate 521 is pushed toward the interior of the inner tube 31, the drive rod 522 drives the drive ring 51 to compress the stop rod 42. Simultaneously, the other end of the drive rod 522 compresses the second elastic member 35. When the pressing plate 521 is released, the drive rod 522 tends to move outward under the restoring force of the second elastic member 35, facilitating the ejection of the pressing plate 521.

[0049] In addition, if Figure 3 and Figure 11 As shown, both the inner tube 31 and the outer tube 32 can be tubular structures with one end open and the other closed. A first cavity 36 is defined between the closed ends of the inner tube 31 and the outer tube 32, primarily serving as a communication channel. The closed end of the inner tube 31 is provided with multiple through-holes 311 that communicate with the first cavity 36. The outer tube 32 is internally defined with at least one flow channel 322, one end of which communicates with the first cavity 36 and the other end of which communicates with the end surface of the open end of the outer tube 32. The pressure plate 521 is provided with at least one connecting pipe 5212, which corresponds one-to-one with each flow channel 322 and selectively seals the other end of the corresponding flow channel 322. It should be noted that the inner diameter of the inner tube 31 can be the same as the diameter of the rudder shaft 1.

[0050] Specifically, during use, when it is necessary to connect the rudder shaft 1 with the rudder blade 2, first we need to extend one end of the rudder shaft 1 into the inner tube 31. During the process of extending the rudder shaft 1, the rudder shaft 1 will squeeze the air in the inner tube 31 into the first cavity 36 through the through hole 311, and then discharge it to the outside of the outer tube 32 through the flow channel 322. After the rudder shaft 1 is installed in place, the pressure plate 521 is pushed, and the pressure of the limit rod 42 by the driving ring 51 is used to limit the limit rod 42 and the corresponding limit groove 111. When the limit is achieved, the pressure plate 521 just seals the other end of the flow channel 322, so that when the rudder shaft 1 has a tendency to move outward, the internal air pressure of the inner tube 31 will tend to decrease, thereby hindering the axial movement of the rudder shaft 1 and making the connection between the rudder shaft 1 and the rudder blade 2 more stable.

[0051] As an optional embodiment, Figure 2-Figure 4As shown, the pressure plate 521 defines a second cavity 5213, which communicates with the connecting pipe 5212. An air inlet 5214, communicating with the second cavity 5213, is defined on a side wall of the pressure plate 521 away from the inner tube 31. A seal is provided at the air inlet 5214. It should be noted that when the steering gear is in operation, the seal and the air inlet 5214 form a tight seal. When the rudder shaft 1 needs to be replaced or removed, the seal is released, allowing air to flow from the air inlet 5214 into the first cavity 36, thereby facilitating the extraction of the rudder shaft 1 from the inner tube 31. The seal may be a sealing plug or a one-way valve.

[0052] The above describes the embodiments of this embodiment, but this embodiment is not limited to the above specific implementation methods. The above specific implementation methods are merely illustrative and not restrictive. Ordinary technicians in this field can also make many forms based on the inspiration of this embodiment, all of which are protected by this embodiment.

Claims

1. A steering gear device for a ship that is easy to load and unload, characterized in that: include: A rudder shaft (1), wherein the rudder shaft (1) is provided with a plurality of limiting groove groups (11) spaced apart along its length direction; A rudder blade (2) is provided with a mounting groove (21) with an opening on one side and a circular cross section; The mounting tube (3) comprises an inner tube (31), an outer tube (32) and a plurality of connecting seats (33), wherein the outer tube (32) is arranged outside the inner tube (31) and the outer wall thereof is connected to the inner wall of the mounting groove (21), and the plurality of connecting seats (33) are arranged between the inner tube (31) and the outer tube (32) at intervals along the axial direction of the inner tube (31), and a mounting cavity (34) is defined between two adjacent connecting seats (33); A plurality of limiting components (4) are in one-to-one correspondence with a plurality of mounting cavities (34) and a plurality of limiting groove groups (11); each of the limiting components (4) is arranged in a corresponding mounting cavity (34); the limiting components (4) include: at least one limiting hole (41) provided on the inner tube (31) and a limiting rod (42) slidably connected in the limiting hole (41); the limiting rod (42) slides in the limiting hole (41) and selectively cooperates with the corresponding limiting groove group (11) to selectively move the rudder shaft (11) ) is connected to the mounting tube (3), the cross-sectional shapes of the limiting hole (41) and the limiting rod (42) in the axial direction of the inner tube (31) are both T-shaped, and the ends with smaller cross-sectional dimensions of the limiting hole (41) and the limiting rod (42) are both arranged close to the rudder shaft (1), the limiting hole (41) is provided with a first step portion (411), the limiting rod (42) is provided with a second step portion (421), and a first elastic member (43) is provided between the first step portion (411) and the second step portion (421); Each of the limiting slot groups (11) includes at least one limiting slot (111); the number of limiting holes (41) and limiting rods (42) in each of the limiting components (4) is the same as the number of limiting slots (111) in each corresponding limiting slot group (11) and corresponds one to one; one end of the limiting rod (42) is slidably connected in the corresponding limiting hole (41) to selectively engage with the corresponding limiting slot (111); the other end of the limiting rod (42) extends into the corresponding mounting cavity (34); A driving assembly (5) is used for simultaneously driving a plurality of limiting rods (42) to slide in the limiting holes (41).

2. A steering gear device for a ship that is easy to load and unload according to claim 1, characterized in that: The driving assembly (5) comprises: a power assembly (52) and a plurality of driving rings (51), wherein the plurality of driving rings (51) correspond to the plurality of limiting assemblies (4) one by one, and the plurality of driving rings (51) are all slidably connected to the inner tube (31) and are all arranged on a side of the corresponding limiting rod (42) close to the opening of the mounting groove (21), and the end surface of the driving ring (51) facing the corresponding limiting rod (42) is an inclined surface, and the power assembly (52) is used to simultaneously drive the plurality of driving rings (51) to squeeze the corresponding limiting rod (42); The power assembly (52) comprises: a pressure plate (521) of an annular structure and at least one driving rod (522), wherein the axis of the driving rod (522) is parallel to the axis of the inner tube (31), the driving rod (522) is slidably connected to the connecting seat (33) and is fixedly connected to multiple driving rings (51), one end of the driving rod (522) passes through the outer tube (32) and is connected to the pressure plate (521), and the pressure plate (521) and the outer tube (32) are respectively provided with a first connecting plate (5211) and a second connecting plate (321) at one end close to the pressure plate (521), and the first connecting plate (5211) and the second connecting plate (321) are detachably connected.

3. A steering gear device for a ship that is easy to load and unload according to claim 2, characterized in that: The end surface of the limiting rod (42) facing the corresponding driving ring (51) is an inclined surface, and the inclined surface is parallel to the inclined surface of the corresponding driving ring (51).

4. A steering gear device for a ship that is easy to load and unload according to claim 2, characterized in that: At least one sleeve (331) is provided on the connecting seat (33) near the bottom of the mounting groove (21). The number of the sleeves (331) is the same as that of the driving rods (522) and they correspond one to one with the driving rods (522). The other end of the driving rod (522) is slidably connected in the corresponding sleeve (331), and a second elastic member (35) is provided between the other end of the driving rod (522) and the bottom of the sleeve (331).

5. The steering gear device for a ship that is easy to load and unload according to claim 2, characterized in that: There are multiple driving rods (522), and the multiple driving rods (522) are distributed in a circular array about the axis of the inner tube (31).

6. The steering gear device for a ship that is easy to load and unload according to claim 1, characterized in that: The connecting seat (33) is an annular structure, and the inner diameter of the connecting seat (33) is the same as the outer diameter of the inner tube (31), and the outer diameter of the connecting seat (33) is the same as the inner diameter of the outer tube (32).

7. The ship steering gear device that is easy to load and unload according to claim 2, characterized in that: The inner tube (31) and the outer tube (32) are both tubular structures with one end open and the other end closed. A first cavity (36) is provided between the closed end of the inner tube (31) and the closed end of the outer tube (32). The closed end of the inner tube (31) is provided with a plurality of through holes (311) communicating with the first cavity (36). At least one flow channel (322) is provided inside the outer tube (32). One end of the flow channel (322) is communicated with the first cavity (36), and the other end of the flow channel (322) is communicated with the end surface of the open end of the outer tube (32). At least one connecting pipe (5212) is provided on the pressure plate (521). The connecting pipe (5212) corresponds one-to-one with the flow channel (322), and the connecting pipe (5212) selectively seals the other end of the corresponding flow channel (322).

8. The steering gear device for a ship that is easy to load and unload according to claim 7, characterized in that: A second cavity (5213) is provided inside the pressure plate (521), and the second cavity (5213) is communicated with the communicating tube (5212). An air inlet (5214) communicating with the second cavity (5213) is provided on a side wall of the pressure plate (521) away from the inner tube (31), and a sealing member is provided at the air inlet (5214).

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