Steering wheel

Abstract

The invention provides a steering wheel, and belongs to the technical field of ship course control. The steering wheel comprises a shell, a main shaft, a driving gear and a driven gear; one end of the main shaft is located outside the shell, the other end of the main shaft is located in the shell, and the main shaft can rotate relative to the shell; the driving gear is positioned in the shell and is coaxially fixed with the other end of the main shaft; the driven gear is located in the shell and meshed with the driving gear, one end face, in the axial direction of the driven gear, of the driven gear is provided with a first limiting structure, and a second limiting structure is arranged in the inner wall of the shell. The second limiting structure is used for stopping the first limiting structure so as to limit the rotation range of the driven gear. The operation convenience of the steering wheel can be improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of ship heading control, and in particular relates to a steering wheel. Background Art

[0002] The steering wheel is located in the ship's cabin and is used to control the direction of the ship's movement. One end of the steering wheel is connected to the steering wheel, and the other end of the steering wheel is connected to the bridge.

[0003] In the related art, the steering wheel includes a housing, a main shaft and a driving gear. One end of the main shaft is located outside the housing and is fixedly connected to the steering wheel. The driving gear and the other end of the main shaft are located in the housing, and the driving gear is sleeved outside the main shaft and can rotate with the main shaft. The driving gear is provided with a limiting structure that cooperates with the housing. The limiting structure can stop the rotation angle of the driving gear, thereby limiting the rotation range of the steering wheel.

[0004] However, since the limiting structure is arranged on the driving gear, the rotation range of the driving gear is not greater than one circle, and correspondingly, the rotation range of the steering wheel is also not greater than one circle. This makes the rotation range of the steering wheel different from the rotation range of the steering wheel in a motor vehicle (generally greater than one circle, for example, two and a half circles, etc.). The operator may be easily confused and mistakenly judge the steering wheel connected to the steering wheel as the steering wheel of the motor vehicle to operate it, thereby causing control errors of the ship and causing danger. Summary of the invention

[0005] The embodiment of the present disclosure provides a steering wheel, which can be controlled in the same way as the wheels of a motor vehicle, making it easy to operate. The technical solution is as follows:

[0006] The disclosed embodiment provides a steering wheel, which comprises a housing, a main shaft, a driving gear and a driven gear; one end of the main shaft is located outside the housing, and the other end is located inside the housing, and the main shaft can rotate relative to the housing; the driving gear is located inside the housing and is coaxially fixed with the other end of the main shaft; the driven gear is located inside the housing and is meshed with the driving gear, and the driven gear has a first limiting structure on one end face along its own axial direction, and a second limiting structure is provided in the inner wall of the housing, and the second limiting structure is used to stop the first limiting structure to limit the rotation range of the driven gear; wherein the ratio of the number of teeth of the driven gear to the number of teeth of the driving gear is n, and n is greater than 1, so that the rotation range of the driving gear is greater than 1 circle.

[0007] In another embodiment of the present disclosure, the first limiting structure has a first limiting wall and a second limiting wall along the circumference of the driven gear, and the first limiting wall and the second limiting wall are both used to offset the second limiting structure, and along the circumference of the driven gear, the central angle of the arc length corresponding to the first limiting wall and the second limiting wall is not less than 40°.

[0008] In another implementation of the present disclosure, the first limiting structure is a block-shaped protrusion, and the protrusion forms the first limiting wall and the second limiting wall on opposite sides along the circumference of the driven gear; the second limiting structure is a protrusion, and the second limiting structure is located in the rotation trajectory of the first limiting structure.

[0009] In another implementation of the present disclosure, the steering wheel also includes a damping structure, which is located in the housing and along the axial direction of the main shaft. One end of the damping structure is connected to the housing, and the other end is in sliding contact with the end surface of the driven gear.

[0010] In another implementation of the present disclosure, the damping structure can be extended and retracted along the axial direction of the main shaft; the driven gear also has a groove that can accommodate the other end of the damping structure, and the groove and the first limiting structure are located on the same diameter of the driven gear.

[0011] In yet another implementation of the present disclosure, one end of the damping structure facing the driven gear is a spherical surface; and an inner wall of the groove is an arc surface that matches the spherical surface of the damping structure.

[0012] In another implementation of the present disclosure, the damping structure includes a plunger, an elastic member and a top sleeve, one end of the plunger is connected to the housing, both ends of the elastic member are respectively connected to the other end of the plunger and the top sleeve, and the top sleeve is in sliding contact with the driven gear.

[0013] In another implementation of the present disclosure, the steering wheel also includes a first transmission gear, a second transmission gear and an angle detection device; the first transmission gear is located in the housing and is sleeved on the other end of the main shaft, the first transmission gear can rotate with the main shaft, the second transmission gear is located in the housing and is movably connected to the housing, the second transmission gear is meshed with the first transmission gear, and the number of teeth of the first transmission gear is less than the number of teeth of the second transmission gear; the angle detection device is located in the housing and is connected to the second transmission gear.

[0014] In another embodiment of the present disclosure, the shell includes a first end plate, a second end plate and a cover body, the first end plate and the second end plate are connected to each other and define a first accommodating chamber for accommodating the driving gear and the driven gear; the cover body is connected to a side of the second end plate away from the first end plate, and defines a second accommodating chamber for accommodating the first transmission gear, the second transmission gear and the angle detection device with the second end plate.

[0015] In another implementation of the present disclosure, the outer wall of the main shaft at one end outside the shell is a conical surface, and the outer diameter of the conical surface gradually increases along the direction from one end of the main shaft located inside the shell to the other end located outside the shell.

[0016] The technical solution provided by the embodiments of the present disclosure has the following beneficial effects:

[0017] Since the driving gear is sleeved outside the main shaft and can rotate with the main shaft, and the driving gear is meshed with the driven gear, when the main shaft rotates with the steering wheel, the driving gear will rotate synchronously, and the driving gear will drive the driven gear to rotate after the rotation of the driving gear.

[0018] Since the driven gear has a first limiting structure and the inner wall of the shell has a second limiting structure. When the driven gear rotates, the first limiting structure on the driven gear rotates synchronously, and when the first limiting structure rotates to interfere with the second limiting structure, the driven gear will stop rotating, and correspondingly, the driving gear and the main shaft will also stop rotating. In this way, the main shaft can be limited so that the main shaft can only rotate within the target range, thereby allowing the steering wheel to rotate within the target range. Since the ratio of the number of teeth of the driven gear to the number of teeth of the driving gear is greater than 1, through the arrangement of the first limiting structure, the driving gear can rotate an angle greater than 1 circle without the driven gear rotating a full circle, thereby achieving the steering wheel rotating within the target range.

[0019] That is to say, in the disclosed embodiment, by setting the ratio n of the number of teeth of the driven gear to the number of teeth of the driving gear to be greater than 1 and the first limiting structure, it can be achieved that the main shaft and even the steering wheel rotate in the same way as the steering wheel in a motor vehicle, thereby improving the convenience of the steering wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1is a structural schematic diagram of a steering wheel provided in an embodiment of the present disclosure;

[0022] Figure 2 yes Figure 1 A front view of

[0023] Figure 3 yes Figure 2 Side view of

[0024] Figure 4 yes Figure 3 Cross-sectional view along AA direction;

[0025] Figure 5 for Figure 4 A side view of a driven gear in FIG.

[0026] Figure 6 yes Figure 4 Cross-sectional view along direction BB.

[0027] The symbols in the figure mean the following:

[0028] 1. Shell; 10. Second limiting structure; 11. First end plate; 12. Second end plate; 13. Cover; 101. First accommodating cavity; 102. Second accommodating cavity; 131. Bottom plate; 132. Side frame;

[0029] 2. spindle; 20. conical surface; 201. gasket; 21. wear-resistant sleeve;

[0030] 3. Driving gear;

[0031] 4. driven gear; 41. first limiting structure; 411. first limiting wall; 412. second limiting wall; 42. groove; 43. support shaft;

[0032] 5. Damping structure; 51. Plunger; 52. Elastic member; 53. Top sleeve;

[0033] 6. First transmission gear; 7. Second transmission gear;

[0034] 8. Angle detection device; 81. Potentiometer; 82. Partition; 83. Connecting column; 84. Plug; 85. Socket. DETAILED DESCRIPTION

[0035] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0036] In the related art, the steering wheel includes a housing, a main shaft, a driving gear and a driven gear. One end of the main shaft is located outside the housing and is fixedly connected to the steering wheel. The driving gear is located in the housing and is sleeved outside the main shaft and can rotate with the main shaft. The driven gear is located in the housing and is connected to the housing. A limiting structure is provided in the driving gear so that the rotation angle of the driving gear can be stopped by the limiting structure, thereby limiting the rotation range of the steering wheel.

[0037] The driven gear meshes with the driving gear. The driven gear is connected to the angle detection device. In this way, when the operator turns the steering wheel, the steering wheel drives the main shaft to rotate, the main shaft drives the driving gear to rotate, the driving gear meshes with the driven gear, and the driven gear drives the angle detection device to collect the rotation angle signal and transmit the collected signal to the control device, so that the corresponding actuator performs the corresponding action. During the rotation of the main shaft, the limit structure on the driving gear is used to confirm whether the main shaft has rotated to the limit position.

[0038] The present disclosure provides a steering wheel, such as Figure 1 As shown, the steering wheel includes a housing 1 and a main shaft 2. One end of the main shaft 2 is located outside the housing 1, and the other end is located inside the housing 1, and the main shaft 2 can rotate relative to the housing 1 with its own axis as the axis.

[0039] Figure 2 yes Figure 1 The front view of Figure 3 yes Figure 2 Side view of Figure 4 yes Figure 3 The cross-sectional view along the AA direction, combined with Figure 2-4 The steering wheel further comprises a driving gear 3 and a driven gear 4. The driving gear 3 is located in the housing 1 and is coaxially fixed with the other end of the main shaft 2. The driving gear 3 can rotate synchronously with the main shaft 2.

[0040] The driven gear 4 is located in the housing 1 and meshes with the driving gear 3 . The driven gear 4 has a first limiting structure 41 on one end surface along its axial direction.

[0041] The inner wall of the housing 1 has a second limiting structure 10, which is used to stop the first limiting structure 41 to limit the rotation range of the driven gear 4 so that the driving gear 3 rotates within the target range. The ratio of the number of teeth of the driven gear 4 to the number of teeth of the driving gear 3 is n, and n is greater than 1, so that the rotation range of the driving gear 3 is greater than 1 circle.

[0042] When the steering wheel provided by the embodiment of the present disclosure is used in a ship, the shell 1 can firstly provide a mounting base for other structures, and can also be connected to the driving platform through the shell 1 so as to connect the steering wheel to the ship.

[0043] Since the steering wheel includes a main shaft 2, and one end of the main shaft 2 extends outside the shell 1, the steering wheel can be connected to the steering wheel through the end of the main shaft 2 located outside the shell 1, so that the steering wheel and the steering wheel can be connected, so that the main shaft 2 can rotate synchronously after turning the steering wheel.

[0044] Since the driving gear 3 is fixed to the other end of the main shaft 2, the driving gear 3 can rotate together with the main shaft 2, and the driving gear 3 is meshed with the driven gear 4. In this way, when the main shaft 2 rotates with the steering wheel, the driving gear 3 will rotate synchronously, and the driving gear 3 will drive the driven gear 4 to rotate after the rotation.

[0045] Since the driven gear 4 has a first limiting structure 41, and the inner wall of the housing 1 has a second limiting structure 10. When the driven gear 4 rotates, the first limiting structure 41 on the driven gear 4 rotates synchronously, and when the first limiting structure 41 rotates to interfere with the second limiting structure 10, the driven gear 4 will stop rotating, and correspondingly, the driving gear 3 and the main shaft 2 will also stop rotating, so that the main shaft 2 can be limited so that the main shaft 2 can only rotate within the target range, thereby allowing the steering wheel to rotate within the target range. Since the ratio of the number of teeth of the driven gear 4 to the number of teeth of the driving gear 3 is greater than 1, through the arrangement of the first limiting structure 41, the driving gear 3 can rotate an angle greater than 1 circle without the driven gear 4 rotating a full circle, thereby achieving the steering wheel rotating within the target range.

[0046] That is to say, in the disclosed embodiment, by setting the ratio n of the number of teeth of the driven gear 4 to the number of teeth of the driving gear 3 and the first limiting structure 41, it can be achieved that the main shaft 2 and even the steering wheel rotate in the same way as the steering wheel in a motor vehicle, thereby improving the convenience of the steering wheel.

[0047] Optionally, the outer wall of the main shaft 2 at one end outside the housing 1 has a tapered surface 20 , and the outer diameter of the tapered surface 20 gradually decreases along the direction from the one end of the main shaft 2 outside the housing 1 to the other end inside the housing 1 .

[0048] In the above implementation, the outer wall at one end of the main shaft 2 is set as a tapered surface 20, so that the tapered surface 20 can be matched with the hoop body of the steering wheel, so that the hoop body can be sleeved and clamped on the main shaft 2. In addition, the main shaft 2 can also be adapted to hoop bodies with different inner diameters.

[0049] In order to further limit the steering wheel, the maximum outer diameter of the tapered surface 20 is smaller than the outer diameter of the end of the spindle 2 located in the housing 1. In this way, a limit platform can be formed at the connection between the tapered surface 20 and other parts of the spindle 2, thereby further limiting the steering wheel through the limit platform to prevent the steering wheel from crossing the limit platform.

[0050] In the disclosed embodiment, in order to facilitate the synchronous rotation of the hoop body of the steering wheel and the main shaft 2, a strip-shaped transmission keyway is provided on the conical surface 20 of the main shaft 2. A transmission key is installed in the transmission keyway. Correspondingly, a keyway for accommodating the transmission key is also provided in the inner wall of the hoop body of the steering wheel. In this way, the main shaft 2 can be connected to the steering wheel through the transmission key, so that the main shaft 2 can rotate synchronously with the steering wheel.

[0051] When the main shaft 2 is connected to the steering wheel, one end of the main shaft 2 is inserted into the hoop body of the steering wheel, and a gasket 201 is sandwiched between the main shaft 2 and the steering wheel.

[0052] In order to reduce the friction between the main shaft 2 and the housing 1, two wear-resistant sleeves 21 are respectively provided at intervals along the axial direction of the main shaft 2 at the position where the main shaft 2 is connected to the housing 1. The two wear-resistant sleeves 21 are embedded in the inner wall of the housing 1, and the wear-resistant sleeves 21 are in sliding contact with the outer wall of the main shaft 2.

[0053] Exemplarily, the wear-resistant sleeve 21 is a polyoxymethylene structural member, which can improve the wear resistance of the wear-resistant sleeve 21, so as to avoid direct contact and friction between the main shaft 2 and the housing 1 through the wear-resistant sleeve 21, thereby extending the service life of the main shaft 2 and the like.

[0054] For example, the main shaft 2 is a stainless steel shaft, which can ensure that the main shaft 2 has sufficient strength. The housing 1 is an aluminum alloy structural member, which can reduce the weight of the entire steering wheel and improve the structural strength of the housing 1.

[0055] In the disclosed embodiment, the shell 1 is formed from aluminum alloy and then anodized with sulfuric acid, which can further increase the wear resistance and corrosion resistance of the shell 1, thereby extending the service life of the shell 1 and the steering wheel.

[0056] Optionally, the housing 1 includes a first end plate 11 , a second end plate 12 and a cover 13 , and the first end plate 11 and the second end plate 12 are connected and define a first accommodating chamber 101 for accommodating the driving gear 3 and the driven gear 4 .

[0057] The cover body 13 is connected to a side of the second end plate 12 away from the first end plate 11 , and defines a second accommodating cavity 102 with the second end plate 12 .

[0058] In the above implementation, the first end plate 11 and the second end plate 12 are used to position the main shaft 2 and the driven gear 4, etc., and provide them with mounting interfaces so that the main shaft 2 and the driven gear 4, etc. can be installed in the housing 1. The cover 13 is used to provide a mounting base for the angle detection device 8, etc.

[0059] In the disclosed embodiment, the first end plate 11, the second end plate 12, the cover body 13, etc. are all formed by machining aluminum alloy plates, and are anodized with sulfuric acid after forming to increase the wear resistance and corrosion resistance of the first end plate 11, the second end plate 12, the cover body 13, etc. In other words, the inner wall and outer surface of the first end plate 11, the second end plate 12, and the cover body 13 are provided with a sulfuric acid anodized film. In this way, the wear resistance and corrosion resistance of the housing 1 can be further improved.

[0060] The first end plate 11 and the second end plate 12 are connected by a plurality of screws, and the second end plate 12 and the cover body 13 are also connected by a plurality of screws.

[0061] The cover body 13 includes a bottom plate 131 and a side frame 132. The two opposite ends of the side frame 132 have openings. The bottom plate 131 and the second end plate 12 are respectively located at two opposite openings of the side frame 132. The bottom plate 131 and the side frame 132 are connected together by a plurality of screws. The bottom plate 131 is connected to the driving platform by screws or the like.

[0062] In the disclosed embodiment, of the two wear-resistant sleeves 21 located outside the main shaft 2, one wear-resistant sleeve 21 is embedded in the inner wall of the first end plate 11 in the shell 1, and the other wear-resistant sleeve 21 is embedded in the inner wall of the second end plate 12 in the shell 1.

[0063] Optionally, the first limiting structure 41 has a first limiting wall 411 and a second limiting wall 412 along the circumference of the driven gear 4 , and both the first limiting wall 411 and the second limiting wall 412 are used to abut against the second limiting structure 10 .

[0064] Figure 5 for Figure 4 Side view of the driven gear in the Figure 5 Along the circumference of the driven gear 4, the central angle α of the arc length corresponding to the first limiting wall 411 and the second limiting wall 412 is not less than 40°.

[0065] In the above implementation, a first limiting wall 411 and a second limiting wall 412 are provided on the first limiting structure 41, and the first limiting wall 411 and the second limiting wall 412 can respectively abut against the second limiting structure so as to limit the forward rotation and reverse rotation of the driven gear 4, so that the driven gear 4 can rotate forward or reverse within a range.

[0066] The central angle of the arc length corresponding to the first limiting wall 411 and the second limiting wall 412 is set to be not less than 40°, so that the maximum forward rotation angle and the maximum reverse rotation angle of the driven gear 4 can be controlled not to exceed 360°, so as to reasonably control the rotation range of the driving gear 3.

[0067] Optionally, the first limiting structure 41 is a block-shaped protrusion, and the protrusion forms a first limiting wall 411 and a second limiting wall 412 on two opposite sides along the circumference of the driven gear 4 .

[0068] The second limiting structure 10 is a protrusion, and the second limiting structure 10 is located in the rotation track of the first limiting structure 41 .

[0069] In the above implementation, the first limiting structure 41 and the second limiting structure 10 are both configured as protrusions, so that the first limiting structure 41 can collide with the second limiting structure 10 during rotation to limit the driven gear 4 .

[0070] In other examples, the first limiting structure 41 is also other structures, such as a plurality of protrusions arranged at intervals along the circumference of the driven gear 4, or two limiting rods arranged at intervals along the circumference of the driven gear 4. Correspondingly, the second limiting structure 10 can also be other structures, such as a limiting sheet, a limiting plate, and the like.

[0071] Figure 6 for Figure 4 Cross-sectional view along BB direction, combined with Figure 6 , for example, the ratio n of the number of teeth of the driving gear 3 and the driven gear 4 is 3. When the driving gear 3 rotates ±480° (the maximum rotation of the driving gear 3 is 960°), the rotation angle of the driven gear 4 is ±160° (the maximum rotation of the driven gear 4 is 320°). That is, when the driven gear 4 rotates to ±160° (after the driven gear 4 rotates 320°), the first limiting structure 41 and the second limiting structure 10 will interfere with each other and limit, so that the number of rotations of the steering wheel is controlled to be two circles plus 2 / 3 circles (one circle is 360°, two circles are 720°, and two circles plus 2 / 3 circles are 960°).

[0072] That is to say, the gear ratio of the driving gear 3 to the driven gear 4 is 1:3, and the angle α between the first limiting wall 411 and the second limiting wall 412 in the first limiting structure 41 of the driven gear 4 is 40°, so that the rotation angle of the driven gear 4 can be ±160°. Correspondingly, the driving gear 3 rotates ±480°, thereby controlling the maximum number of rotations of the steering wheel to be two turns plus 2 / 3 turns.

[0073] In other examples, as long as the second limiting structure 10 stops the first limiting structure 41 so that the rotation angle range of the driven gear 4 is α, the rotation angle range α and n satisfy: n*α=A, where A is the rotation range of the steering wheel.

[0074] In the disclosed embodiment, a support shaft 43 is provided inside the driven gear 4, and both ends of the support shaft 43 are respectively in sliding contact with the first end plate 11 and the second end plate 12. The support shaft 43 is interference fit with the driven gear 4. The support shaft 43 can facilitate the installation of the driven gear 4 in the housing 1.

[0075] Similarly, in order to reduce the wear between the support shaft 43 and the housing 1 , both ends of the support shaft 43 are also respectively covered with wear-resistant sleeves, and the wear-resistant sleeves are embedded in the housing 1 .

[0076] Continue to see Figure 4 Optionally, the steering wheel also includes a damping structure 5, which is located in the housing 1 and along the axial direction of the main shaft 2. One end of the damping structure 5 is connected to the housing 1, and the other end is in sliding contact with the end surface of the driven gear 4.

[0077] In the above implementation, the damping structure 5 can buffer the rotation of the driven gear 4 so as to limit the rotation speed of the driving gear 3 and the main shaft 2, thereby preventing the steering wheel from vibrating or shaking due to excessive rotation of the driving gear 3 or the main shaft 2.

[0078] Optionally, the damping structure 5 can be telescopic along the axial direction of the main shaft 2 .

[0079] Combination Figure 6 The driven gear 4 also has a groove 42 on one end surface away from the first limiting structure 41 for accommodating the other end of the damping structure 5 .

[0080] In the above implementation, by providing a groove 42 in the driven gear 4 , the end of the damping structure 5 can be accommodated by the groove 42 , so that the rotation angle of the driven gear 4 can be determined by the cooperation between the groove 42 and the damping structure 5 .

[0081] Since the groove 42 and the first limiting structure 41 are located on the same diameter of the driven gear 4. Assuming that the damping structure 5 is located exactly in the groove 42, the corresponding steering wheel is in the middle position. Since the damping structure 5 is located in the groove 42, when the steering wheel is turned, the driven gear 4 needs to overcome the friction provided by the damping structure 5 in order to rotate, and needs to reversely compress the damping structure 5 so that the damping structure 5 is out of the groove 42. Therefore, the torque that the steering wheel needs to provide at this position is greater than the torque that needs to be provided at other positions, which reflects the middle position feeling of the steering wheel. In other words, when the damping structure 5 is located in the groove 42, the corresponding judgment is that the steering wheel is in the middle position.

[0082] Optionally, one end of the damping structure 5 facing the driven gear 4 is a spherical surface. The inner wall of the groove 42 is an arc surface that matches the spherical surface of the damping structure 5 .

[0083] In the above implementation, the end of the damping structure 5 facing the driven gear 4 is set to a spherical surface, and the inner wall of the groove 42 is set to an arc surface that matches the spherical surface of the damping structure 5. In this way, the damping structure 5 and the driven gear 4 can be in spherical contact, so as to reduce the wear between the two through the spherical contact and extend the service life of the damping structure 5.

[0084] In other examples, balls or the like may also be provided on the end plate of the damping structure 5 so as to reduce the friction between the damping structure 5 and the driven gear 4 through the balls.

[0085] Combination Figure 4 Optionally, the damping structure 5 includes a plunger 51, an elastic member 52 and a top sleeve 53, one end of the plunger 51 is connected to the housing 1, two ends of the elastic member 52 are respectively connected to the other end of the plunger 51 and the top sleeve 53, and the expansion and contraction direction of the elastic member 52 is the same as the axial direction of the driven gear 4. The top sleeve 53 is in sliding contact with the driven gear 4.

[0086] In the above implementation, the damping structure 5 is configured as a structure of a plunger 51, an elastic member 52 and a top sleeve 53, and a sliding contact can be achieved with the driven gear 4 through the top sleeve 53. At the same time, the elastic member 52 allows relative movement between the plunger 51 and the top sleeve 53, and the plunger 51 can also be used to connect the damping structure 5 to the housing 1.

[0087] That is, by adjusting the plunger 51 , the elastic member 52 can be compressed so that the elastic member 52 squeezes the top sleeve 53 to increase the friction between the damping structure 5 and the driven gear 4 , thereby generating resistance against the rotation of the driving gear 3 .

[0088] When the damping structure 5 is located in the groove 42 , when the steering wheel is turned, the driven gear 4 needs to overcome the friction provided by the damping structure 5 and needs to reversely compress the elastic member 52 to make the top cover 53 disengage from the groove 42 .

[0089] In the disclosed embodiment, the plunger 51 is a screw plug, and the outer wall of the plunger 51 has threads, and correspondingly, the housing 1 is provided with an internal threaded hole that matches the external thread of the plunger 51. By tightening the plunger 51 in the internal threaded hole in the housing 1, the compression amount of the elastic member 52 can be adjusted, thereby changing the friction resistance of the damping structure 5 to the driven gear 4.

[0090] The elastic member 52 is a telescopic spring, and the elastic member 52 is in a compressed state in an initial state.

[0091] Optionally, the steering wheel further includes a first transmission gear 6, a second transmission gear 7 and an angle detection device 8. The first transmission gear 6 is located in the second accommodating chamber 102 of the housing 1 and is sleeved outside the other end of the main shaft 2. The first transmission gear 6 can rotate with the main shaft 2. The second transmission gear 7 is located in the second accommodating chamber 102 of the housing 1 and is movably connected to the housing 1. The second transmission gear 7 is meshed with the first transmission gear 6. The number of teeth of the first transmission gear 6 is less than the number of teeth of the second transmission gear 7. The angle detection device 8 is located in the second accommodating chamber 102 of the housing 1 and is connected to the second transmission gear 7.

[0092] In the above implementation, the first transmission gear 6 is used to rotate with the main shaft 2. The second transmission gear 7 is used to mesh with the first transmission gear 6 so as to rotate with the first transmission gear 6. Moreover, the second transmission gear 7 is used to be connected to the angle detection device 8 so as to detect the rotation angle of the main shaft 2 in real time through the angle detection device.

[0093] Moreover, the number of teeth of the first transmission gear 6 is smaller than the number of teeth of the second transmission gear 7. Therefore, when the second transmission gear 7 rotates following the first transmission gear 6, the rotation angle of the second transmission gear 7 is smaller than that of the first transmission gear 6, thereby simply realizing that the rotation range of the second transmission gear 7 is less than 1 circle. In this way, the angle detected by the angle detection device 8 is not greater than 360 degrees, which is convenient for detection and recording.

[0094] Optionally, the angle detection device 8 includes a potentiometer 81, a partition 82 and a plurality of connecting posts 83, wherein the partition 82 is located in the cover body 13 and arranged opposite to the second end plate 12. The plurality of connecting posts 83 are spaced between the second end plate 12 and the partition 82 and are parallel to each other. One end of each connecting post 83 is connected to the second end plate 12. The other end of each connecting post 83 is connected to the partition 82. The potentiometer 81 is connected to the partition 82, and one end of the potentiometer 81 is located outside the cover body 13, and the other end of the potentiometer 81 is connected to the second transmission gear 7.

[0095] In the above implementation, the potentiometer 81 is used to be connected to the second transmission gear 7 so as to obtain the rotation angle of the steering wheel by detecting the rotation angle of the second transmission gear 7 .

[0096] The potentiometer 81 is connected to the second transmission gear 7. The first transmission gear 6 drives the second transmission gear to rotate, thereby driving the potentiometer shaft of the potentiometer 81 to rotate. The potentiometer 81 converts the rotation angle into an analog output, thereby achieving the purpose of controlling the steering wheel action to realize the ship's turning or reversing.

[0097] The partition plate 82 is used to provide a mounting base for the potentiometer 81. The connecting column 83 is used to connect the partition plate with the second end plate 12 and the like.

[0098] Exemplarily, the connection column 83 may be a structure such as a screw, and both ends of the connection column 83 are respectively threadedly connected to the partition plate 82 and the second end plate 12 .

[0099] The angle detection device 8 further includes a plug 84 and a socket 85, wherein the plug 84 is located in the second accommodating chamber 102, and the socket 85 is located outside the second accommodating chamber 102. The plug 84 and the socket 85 are connected, and the plug 84 is connected to the side wall of the cover body 13. The plug 84 is electrically connected to the potentiometer 81. The plug 84 and the socket 85 facilitate the normal operation of the potentiometer 81.

[0100] The following briefly introduces the working process of the steering wheel provided in the embodiment of the present disclosure:

[0101] Firstly, the main shaft 2 in the steering wheel is connected to the steering wheel, and the housing 1 in the steering wheel is connected to the driving platform, so that the steering wheel is installed in the driving room of the ship.

[0102] After that, the steering wheel will drive the main shaft 2 to rotate. After the main shaft 2 rotates, it will drive the first transmission gear 6 to rotate, and after the first transmission gear 6 rotates, it will drive the second transmission gear 7 to rotate, and the second transmission gear 7 drives the potentiometer shaft to rotate. The potentiometer converts the rotation angle into analog output, thereby achieving the purpose of controlling the connection end action to realize the ship's steering or reverse sailing.

[0103] At the same time, after the main shaft 2 rotates, it will also drive the driving gear 3 to rotate, and the driving gear 3 will drive the driven gear 4 to rotate. When the driven gear 4 rotates to a certain angle, it can be stopped by the second limiting structure 10 on the housing, that is, when the driven gear 4 rotates less than a full circle, it will be stopped and limited, thereby controlling the maximum number of rotations of the steering wheel to the target number of circles.

[0104] Moreover, since a groove 42 is provided in the driven gear 4, when the damping structure 5 is located in the groove 42, turning the steering wheel requires the driven gear 4 to overcome the friction provided by the damping structure 5 and requires reverse compression of the damping structure 5 to disengage the groove 42. Therefore, the torque that the steering wheel needs to provide at this position is greater than the torque at other positions. The position of the steering wheel corresponding to when the damping structure 5 is located in the groove 42 can be regarded as the center position of the steering wheel.

[0105] The above description is only an optional embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A steering wheel, characterized in that: The steering wheel comprises a housing (1), a main shaft (2), a driving gear (3) and a driven gear (4); One end of the main shaft (2) is located outside the shell (1), and the other end is located inside the shell (1), and the main shaft (2) is capable of rotating relative to the shell (1); The driving gear (3) is located in the housing (1) and is coaxially fixed with the other end of the main shaft (2); The driven gear (4) is located in the housing (1), and the driven gear (4) is meshed with the driving gear (3); the driven gear (4) has a first limiting structure (41) on one end face along its own axial direction; the inner wall of the housing (1) has a second limiting structure (10), and the second limiting structure (10) is used to stop the first limiting structure (41) to limit the rotation range of the driven gear (4); The ratio of the number of teeth of the driven gear (4) to the number of teeth of the driving gear (3) is n, and n is greater than 1, so that the rotation range of the driving gear (3) is greater than 1 circle.

2. The steering wheel according to claim 1, characterized in that: The first limiting structure (41) has a first limiting wall (411) and a second limiting wall (412) along the circumference of the driven gear (4); the first limiting wall (411) and the second limiting wall (412) are both used to abut against the second limiting structure (10); and along the circumference of the driven gear (4), the central angle of the arc length corresponding to the first limiting wall (411) and the second limiting wall (412) is not less than 40°.

3. The steering wheel according to claim 2, characterized in that: The first limiting structure (41) is a block-shaped protrusion, and the protrusion forms the first limiting wall (411) and the second limiting wall (412) on two opposite sides along the circumference of the driven gear (4); The second limiting structure (10) is a protrusion, and the second limiting structure (10) is located in the rotation track of the first limiting structure (41).

4. The steering wheel according to any one of claims 1 to 3, characterized in that: The steering wheel also includes a damping structure (5), which is located in the housing (1) and along the axial direction of the main shaft (2). One end of the damping structure (5) is connected to the housing (1), and the other end is in sliding contact with the end surface of the driven gear (4).

5. The steering wheel according to claim 4, characterized in that: The damping structure (5) is capable of extending and retracting along the axial direction of the main shaft (2); The driven gear (4) also has a groove (42) capable of accommodating the other end of the damping structure (5), and the groove (42) and the first limiting structure (41) are located on the same diameter of the driven gear (4).

6. The steering wheel according to claim 4, characterized in that: One end of the damping structure (5) facing the driven gear (4) is a spherical surface; The inner wall of the groove (42) is a curved surface that matches the spherical surface of the damping structure (5).

7. The steering wheel according to claim 5, characterized in that: The damping structure (5) comprises a plunger (51), an elastic member (52) and a top sleeve (53); one end of the plunger (51) is connected to the housing (1); two ends of the elastic member (52) are respectively connected to the other end of the plunger (51) and the top sleeve (53); and the top sleeve (53) is in sliding contact with the driven gear (4).

8. The steering wheel according to any one of claims 1-3 and 5-7, characterized in that: The steering wheel further comprises a first transmission gear (6), a second transmission gear (7) and an angle detection device (8); The first transmission gear (6) is located in the housing (1) and is sleeved on the other end of the main shaft (2); the first transmission gear (6) can rotate along with the main shaft (2); the second transmission gear (7) is located in the housing (1) and is movably connected to the housing (1); the second transmission gear (7) is meshed with the first transmission gear (6); the number of teeth of the first transmission gear (6) is smaller than the number of teeth of the second transmission gear (7); and the rotation range of the second transmission gear (7) is smaller than 1 circle; The angle detection device (8) is located inside the housing (1) and is connected to the second transmission gear (7).

9. The steering wheel according to claim 8, characterized in that: The housing (1) comprises a first end plate (11), a second end plate (12) and a cover (13), wherein the first end plate (11) and the second end plate (12) are connected and define a first accommodating cavity (101) for accommodating the driving gear (3) and the driven gear (4); The cover body (13) is connected to a side of the second end plate (12) away from the first end plate (11), and defines a second accommodating chamber (102) for accommodating the first transmission gear (6), the second transmission gear (7) and the angle detection device (8) together with the second end plate (12).

10. The steering wheel according to any one of claims 1-3, 5-7 and 9, characterized in that: The outer wall of the main shaft (2) at one end located outside the shell (1) has a tapered surface (20), and the outer diameter of the tapered surface (20) gradually decreases along the direction from the one end of the main shaft (2) located outside the shell (1) to the other end located inside the shell (1).

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