Ship steering engine device convenient to assemble and disassemble

Abstract

The invention relates to the technical field of steering engines, and discloses a marine steering engine device convenient to assemble and disassemble, which comprises a rudder shaft, a rudder blade, a mounting pipe, a limiting assembly and a driving assembly, a plurality of limiting groove sets are formed in the rudder shaft in the length direction of the rudder shaft. A mounting groove is formed in the rudder blade; the mounting pipe comprises an inner pipe, an outer pipe and a plurality of connecting seats, the outer wall of the outer pipe is connected with the inner wall of the mounting groove, the connecting seats are arranged between the inner pipe and the outer pipe, and a mounting cavity is defined between every two adjacent connecting seats; the limiting assembly comprises at least one limiting hole formed in the inner pipe and a limiting rod, and the limiting rod slides in the limiting hole and is selectively matched with the corresponding limiting groove set in a limiting mode. The driving assembly is used for driving the multiple limiting rods to slide in the limiting holes at the same time. The rudder shaft and the rudder blade can be conveniently and rapidly assembled and disassembled, the rudder shaft can be conveniently disassembled and replaced, the stability of connection between the rudder shaft and the installation pipe can be improved, and a steering engine 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 convenient for loading and unloading. Background Art

[0002] When a ship or a submersible is sailing, it needs to control its heading through a steering gear. The steering gear is usually composed of a power source, a rudder shaft and a rudder blade. The power source drives the rudder blade to rotate by driving the rudder shaft, thereby changing the heading of the ship or the submersible. 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 submersible will be replaced during its service.

[0003] In the related technology, there are two main connection forms between the rudder shaft and the rudder blade, one is through key connection, and the other is through interference fit connection through conical grinding. Both methods rely on huge knocking and pulling forces to achieve installation and disassembly by machines, and require a series of processes such as pre-installation, keyway marking, centering, manual knocking, and coaxiality detection. The process is relatively cumbersome, difficult to operate, and time-consuming. Summary of the invention

[0004] The invention provides a steering gear device for a ship which is easy to load and unload, and solves 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 which is easy to load and unload, comprising: a rudder shaft, wherein a plurality of limit groove groups are arranged at intervals along the length direction of the rudder shaft; a rudder blade, wherein a mounting groove with an opening on one side and a circular cross section is arranged inside the rudder blade; a mounting tube, comprising: an inner tube, an outer tube and a plurality of connecting seats, wherein the outer tube is arranged outside the inner tube and the outer wall of the outer tube is connected to the inner wall of the mounting groove, wherein the plurality of connecting seats are arranged between the inner tube and the outer tube at intervals along the axial direction of the inner tube, and a mounting cavity is defined between two adjacent connecting seats; a plurality of limit assemblies, which correspond to the plurality of mounting cavities and the plurality of limit groove groups one by one, wherein each of the limit assemblies is arranged in the corresponding mounting cavity, wherein the limit assemblies comprise: at least one limit hole arranged on the inner tube and a limit rod slidably connected in the limit hole, wherein the limit rod slides in the limit hole and selectively cooperates with the corresponding limit groove group in a limit position so as to selectively connect the rudder shaft with the mounting tube; and a driving assembly, which is used for simultaneously driving the plurality of limit rods to slide in the limit hole.

[0006] As a further improvement of the present invention, each of the limit groove groups includes at least one limit groove, the number of limit holes and limit rods in each of the limit components is the same as and corresponds to the number of limit grooves in each corresponding limit groove group, one end of the limit rod is slidably connected in the corresponding limit hole to selectively cooperate with the corresponding limit groove, and the other end of the limit rod extends into the corresponding installation 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 arranged on the limiting hole, a second step portion is arranged on the limiting rod, and a first elastic member is arranged 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 surface of the driving ring facing the corresponding limit rod is an inclined surface, and the power assembly is used to simultaneously drive the 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 end of the outer tube close to the pressure plate are respectively provided with a first connecting plate and a second connecting 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 arranged on the connecting seat near the bottom of the mounting groove, the number of the sleeves is the same as the driving rod, 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 arranged 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 arranged between the closed end of the inner tube and the closed end of the outer tube, a plurality of through holes connected to the first cavity are arranged at the closed end of the inner tube, at least one flow channel is arranged 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 arranged on the pressure plate, the connecting tube corresponds to the flow channel one by one, and the connecting tube selectively seals 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, an air inlet connected to the second cavity is opened on a 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: 1. The present invention provides an installation groove inside the rudder blade, and a installation tube is fixedly connected in the installation groove. By arranging a plurality of limit rods in the installation tube that selectively cooperate with the upper limit groove of the rudder shaft, the rudder shaft and the rudder blade can be conveniently and quickly installed and disassembled, thereby facilitating the disassembly and replacement of the rudder shaft. In addition, a plurality of limit rods are arranged to cooperate with a plurality of limit grooves, so that the stability of the connection between the rudder shaft and the installation tube can be improved, thereby enabling the steering gear to work better.

[0016] 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 is connected to 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. 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 further making the connection between the rudder shaft and the rudder blade more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional overall structural schematic diagram of a steering gear device for a ship that is easy to load and unload according to an embodiment of the present invention; Figure 2 yes Figure 1 The enlarged view of point A in the middle; Figure 3 It is a partial top view cross-sectional structural schematic diagram of a steering gear device for a ship that is easy to load and unload according to an embodiment of the present invention; Figure 4 yes Figure 3 The enlarged view of point B in the middle; Figure 5 yes Figure 3 Enlarged view of point C in the middle; Figure 6It is a partial side cross-sectional structural schematic diagram of a steering gear device for a ship that is easy to load and unload according to an embodiment of the present invention; Figure 7 yes Figure 6 The enlarged view of point D in the middle; Figure 8 This is a schematic diagram of a first front 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; Fig. 9 It is a schematic diagram of a second front 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; Fig.10 It is a schematic diagram of a third front 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; Fig.11 It is a schematic diagram of a fourth front 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.

[0018] In the figure: 1, rudder shaft; 11, limit groove group; 111, limit 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, limit assembly; 41, limit hole; 411, first step portion; 42, limit rod; 421, second step portion; 43, first elastic member; 5, drive assembly; 51, drive ring; 52, power assembly; 521, pressure plate; 5211, first connecting plate; 5212, connecting tube; 5213, second cavity; 5214, air inlet; 522, drive rod. DETAILED DESCRIPTION

[0019] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0020] like Figure 1-Figure 11 As shown, a steering gear device for a ship which is easy to load and unload comprises: a rudder shaft 1, a rudder blade 2, a mounting tube 3, a plurality of limit assemblies 4 and a drive assembly 5.

[0021] Among them, the rudder shaft 1 mainly plays a role of transmission, which can transmit the power of the power source in the steering gear to the rudder blade 2. It should be noted that the power source is a prior art and is not elaborated in detail in this application. The rudder blade 2 mainly plays a role in changing the heading of the ship. The mounting pipe 3 mainly plays a role of connection and transmission. The limit assembly 4 mainly plays a role of limit. The drive assembly 5 mainly plays a role of driving.

[0022] Specifically, Figure 5 and Fig.10 As shown, the rudder shaft 1 is provided with a plurality of limit groove groups 11 spaced apart along its length direction, and each limit groove group 11 may include at least one limit groove 111, and the limit groove 111 may be in the shape of a cylindrical structure, and the axial direction of the limit groove 111 is arranged along the radial direction of the rudder shaft 1. The plurality of limit groove groups 11 are spaced apart, so that the distribution of the plurality of limit groove groups 11 on the rudder shaft 1 can be more uniform, and the influence of the excessive density of the limit groove groups 11 on the structural strength of the rudder shaft 1 can be reduced. The limit groove 111 mainly plays the role of limiting, and the limit groove 111 can cooperate with the limit assembly 4 to connect the rudder shaft 1 with the mounting tube 3, and then the connection between the rudder shaft 1 and the rudder blade 2 can be realized.

[0023] As an optional embodiment, Fig.10 As shown, each limiting groove group 11 includes a plurality of limiting grooves 111, and the plurality of limiting grooves 111 are distributed in a circular array about the axis of the rudder shaft 1. The arrangement of the plurality of limiting grooves 111 can increase the 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 plurality of limiting grooves 111 are distributed in a circular array about the axis of the rudder shaft 1, which can make the arrangement of the plurality of limiting grooves 111 more comprehensive, make the force on the rudder shaft 1 more balanced, and be beneficial to protecting the rudder shaft 1. In this embodiment, the number of limiting grooves 111 in each limiting groove group 11 can be four.

[0024] In addition, if Figure 3 As shown, the interior of the rudder blade 2 is provided with a mounting groove 21 with one side open and a circular cross section along its length direction. The mounting groove 21 mainly serves the purpose of installation. The mounting groove 21 is set as a structure with one side open, which can facilitate the installation of the mounting tube 3 and the rudder shaft 1. The circular cross-section design of the mounting groove 21 along its length direction can better adapt to the shape of the mounting tube 3 and the rudder shaft 1, which is convenient for installation. It should be noted that after the mounting tube 3 is installed in the mounting groove 21, part of it extends out of the mounting groove 21, which can facilitate the subsequent installation and setting of the drive assembly 5.

[0025] Furthermore, if Figure 3 and Figure 6As shown, the mounting tube 3 is fixedly connected in the mounting groove 21 , so that the connection between the mounting tube 3 and the rudder blade 2 can be more secure and stable.

[0026] like Figure 3-Figure 5 As shown, the mounting tube 3 includes an inner tube 31, an outer tube 32 and a plurality of connection seats 33. The inner tube 31, the outer tube 32 and the mounting groove 21 can be arranged concentrically, that is, the axes of the inner tube 31, the outer tube 32 and the mounting groove 21 are colinear, so that the arrangement is more reasonable and convenient for mounting the mounting tube 3 inside the mounting groove 21. Specifically, the outer tube 32 is arranged 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 on the outer side of the inner tube 31 and forms a wrap 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, so that the connection between the outer tube 32 and the rudder blade 2 can be more reliable and stable, thereby making the connection between the mounting tube 3 and the rudder blade 2 more reliable and stable.

[0027] 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. The connecting seat 33 is connected between the inner tube 31 and the outer tube 32, so that the connection between the inner tube 31 and the outer tube 32 can be more stable, thereby making the structure of the installation tube 3 more reliable and stable. In addition, the two adjacent connecting seats 33 are arranged at intervals, and the gap therein defines the installation cavity 34, which mainly plays the role 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.

[0028] Specifically, the plurality of limit assemblies 4 correspond to the plurality of mounting cavities 34 and the plurality of limit groove groups 11, and each limit assemblies 4 is disposed in the corresponding mounting cavity 34. In other words, a limit assemblies 4 is disposed in each mounting cavity 34, and each mounting cavity 34 is connected to a limit groove group 11, and the limit assemblies 4 can be limitedly matched with the corresponding limit groove group 11 in the corresponding mounting cavity 34. Since the number of mounting cavities 34 in this embodiment is three, the number of limit assemblies 4 and the number of limit groove groups 11 are also three.

[0029] 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 along the radial direction of 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 corresponds to each other. One end of the limiting rod 42 is slidably connected in the corresponding limiting hole 41 to selectively cooperate with the corresponding limiting groove 111, so as to selectively connect the rudder shaft 1 to the mounting tube 3. The other end of the limiting rod 42 extends into the corresponding mounting cavity 34.

[0030] It should be noted that, since the number of the limiting holes 41, the limiting rods 42 and the limiting grooves 111 in the corresponding limiting groove group 11 is the same and one-to-one corresponding, the number of the limiting holes 41 and the limiting rods 42 in a single limiting component 4 in this embodiment is also four.

[0031] One end of the limiting rod 42 is slidably connected in the corresponding limiting hole 41 to selectively limit the corresponding limiting groove 111, and 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 be limited to the corresponding limiting groove 111, or it can not be limited to the corresponding limiting groove 111. Specifically, when it is necessary to connect the rudder shaft 1 with the rudder blade 2, we can enable the driving component 5 to squeeze the other end of the limiting rod 42 into the corresponding limiting hole 41, so that one end of the limiting rod 42 will move toward the corresponding limiting groove 111 along the radial direction of the rudder shaft 1, and then the limiting between the limiting rod 42 and the corresponding limiting groove 111 can be achieved. When it is necessary to replace or disassemble the rudder shaft 1, it is only necessary to enable the driving component 5 again to release the pressure on the other end of the limiting rod 42, so that one end of the limiting rod 42 is reset to the inside of the corresponding limiting hole 41, which is convenient and flexible to use.

[0032] Furthermore, if Figure 3-Figure 5As shown, the driving assembly 5 includes a power assembly 52 and a plurality of driving rings 51, and the plurality of driving rings 51 correspond to the plurality of limiting assemblies 4 one by one. That is to say, in the present embodiment, the number of driving rings 51 is also three. The plurality of driving rings 51 are all slidably connected to the inner tube 31, and are all arranged on the 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 limiting rod 42 is arranged as an inclined surface. The driving ring 51 is slidably connected to the inner tube 31, so that the power assembly 52 can be used to drive the driving ring 51 to move along the axial direction of the inner tube 31. The plurality of driving rings 51 are all arranged on the side of the corresponding limiting rod 42 close to the opening of the mounting groove 21, so that the other end of the corresponding limiting rod 42 can be squeezed by pressing the driving ring 51 inward, which is more convenient to operate. In addition, the end surface of the driving ring 51 facing the corresponding limiting rod 42 is set as an inclined surface, and 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 limiting 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 limiting rod 42 and the axis of the rudder shaft 1. In this way, when the driving ring 51 squeezes the other end of the limiting rod 42, the inclined surface can play a guiding role, thereby saving more effort during operation and making the operation more convenient.

[0033] 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: a pressure plate 521 of an annular structure 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 fixedly connected to multiple drive rings 51 at the same time, one end of the drive rod 522 passes through the outer tube 32 and is fixedly connected to the pressure plate 521, and the pressure plate 521 and the end of the outer tube 32 close to the pressure plate 521 are respectively fixedly connected with the first connecting plate 5211 and the second connecting plate 321, and 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, so that the pressure plate 521 can avoid interfering with the installation of the rudder shaft 1. When in use, the pressing plate 521 is pushed toward the inner tube 31, that is, pushed inward, and the movement of the pressing plate 521 drives all the driving rings 51 to move toward the inside of the installation groove 21 through the driving rod 522, thereby squeezing multiple limiting rods 42 at the same time to achieve a limiting 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 by bolts, so that the position of the driving ring 51 can be fixed to make the structure more stable.

[0034] As an optional embodiment, Figure 5 As shown, the end surface of the limiting rod 42 facing the corresponding driving ring 51 is also set as an inclined surface, and its inclined surface is parallel to the inclined surface of the corresponding driving ring 51. In this way, the resistance of the limiting rod 42 to the driving ring 51 can be further reduced, making it easier for the driving ring 51 to squeeze the limiting rod 42, saving more effort and making the operation more convenient.

[0035] As an optional embodiment, Fig. 9 As shown, there may be multiple driving rods 522, and the multiple driving rods 522 are distributed in a circular array about the axis of the inner tube 31. In this way, when the pressing plate 521 is pushed, the driving ring 51 can be pushed from multiple positions, so that the force on the driving ring 51 can be more balanced and comprehensive, and the driving ring 51 can better move along the axial direction of the inner tube 31. In this embodiment, the number of driving rods 522 is three, and of course it can be other suitable numbers.

[0036] As an optional embodiment, Figure 5 As shown, 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 of the limiting hole 41 and the limiting rod 42 with smaller cross-sectional dimensions 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 arranged between the first step portion 411 and the second step portion 421. The first elastic member 43 mainly plays a role of resetting. 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, and one end of the limiting rod 42 can be retracted into the corresponding limiting hole 41 under the elastic force of the first elastic member 43, so that the limiting of the rudder shaft 1 by the limiting rod 42 can be released. The first elastic member 43 can be a spring, and of course it can also be other suitable components.

[0037] As an optional embodiment, Figure 6 and Figure 7As shown, at least one sleeve 331 is provided on the connection seat 33 near the bottom of the installation groove 21. The number of sleeves 331 is the same as that of the driving rod 522, and they correspond to the driving rod 522 one by one. 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. The second elastic member 35 also mainly plays a role of resetting. It should be noted that at this time, in the direction from outside to inside along the installation groove 21, the driving rod 522 is slidably connected with the remaining connection seats 33 except the last connection seat 33. When the pressing plate 521 is pushed to move inside the inner tube 31, the driving rod 522 will drive the driving ring 51 to squeeze the limiting rod 42. At the same time, the other end of the driving rod 522 will squeeze the second elastic member 35. When the pressing plate 521 is released, the driving rod 522 will have a tendency to move outward under the restoring force of the second elastic member 35, which is convenient for the ejection of the pressing plate 521.

[0038] In addition, if Figure 3 and Fig.11 As shown, both the inner tube 31 and the outer tube 32 can be 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 first cavity 36 mainly serves as a connection. A plurality of through holes 311 communicating with the first cavity 36 are provided at the closed end of the inner tube 31. 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. 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 pressing plate 521. The connecting pipe 5212 corresponds to the flow channel 322 one by one, and the connecting pipe 5212 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.

[0039] 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 extension of 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.

[0040] As an optional embodiment, Figure 2-Figure 4As shown, a second cavity 5213 is provided inside the pressure plate 521, and the second cavity 5213 is communicated with the connecting pipe 5212. An air inlet 5214 communicated 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. It should be noted that when the steering gear is in working state, the sealing member and the air inlet 5214 are in sealing cooperation. When the rudder shaft 1 needs to be replaced or disassembled, the sealing member and the air inlet 5214 are released, so that air can be filled into the first cavity 36 from the air inlet 5214, and then the rudder shaft 1 can be easily drawn out from the inner tube 31. The sealing member can be a sealing plug or a one-way valve.

[0041] The above describes an embodiment of the present embodiment, but the present embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present embodiment, ordinary technicians in this field can also make many forms, all of which are within the protection of the present 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 limit groove groups (11) spaced apart along its length direction; A rudder blade (2) having an installation 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 connection seats (33); the outer tube (32) is arranged outside the inner tube (31) and its outer wall is connected to the inner wall of the mounting groove (21); the plurality of connection 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 connection seats (33); A plurality of limiting components (4) corresponding to the plurality of mounting cavities (34) and the plurality of limiting groove groups (11) one by one, each of the limiting components (4) being arranged in a corresponding mounting cavity (34), the limiting components (4) comprising: 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) sliding in the limiting hole (41) and selectively limiting cooperation with the corresponding limiting groove group (11) to selectively connect the rudder shaft (1) with the mounting tube (3); A driving assembly (5) is used for simultaneously driving a plurality of limiting rods (42) to slide in the limiting holes (41).

2. A ship steering gear device that is easy to load and unload according to claim 1, characterized in that: Each of the limiting groove groups (11) comprises at least one limiting groove (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 grooves (111) in each corresponding limiting groove 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 cooperate with the corresponding limiting groove (111); the other end of the limiting rod (42) extends into the corresponding mounting cavity (34).

3. A ship steering gear device that is easy to load and unload according to claim 1, characterized in that: 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 arranged between the first step portion (411) and the second step portion (421).

4. 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, 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 a plurality of driving rings (51) at the same time, 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.

5. A steering gear device for a ship that is easy to load and unload according to claim 4, 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).

6. A ship steering gear device that is easy to load and unload according to claim 4, characterized in that: At least one sleeve (331) is provided on the connection seat (33) close to the bottom of the installation groove (21); the number of the sleeves (331) is the same as that of the driving rods (522), and the sleeves (331) correspond to the driving rods (522) one by one; 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).

7. A ship steering gear device that is easy to load and unload according to claim 4, characterized in that: The number of the driving rods (522) is plural, and the driving rods (522) are distributed in a circular array about the axis of the inner tube (31).

8. 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, 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).

9. The steering gear device for a ship that is easy to load and unload according to claim 4, 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) in communication 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 in communication with the first cavity (36), and the other end of the flow channel (322) is in communication with the end surface of the open end of the outer tube (32). At least one connecting tube (5212) is provided on the pressure plate (521). The connecting tube (5212) corresponds to the flow channel (322) one by one, and the connecting tube (5212) selectively seals the other end of the corresponding flow channel (322).

10. A ship steering gear device that is easy to load and unload according to claim 9, characterized in that: A second cavity (5213) is provided inside the pressure plate (521), and the second cavity (5213) is connected to the connecting tube (5212). An air inlet (5214) connected to 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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