WO2018205050A1

WO2018205050A1 - Steering apparatus

Info

Publication number: WO2018205050A1
Application number: PCT/CN2017/000746
Authority: WO
Inventors: 徐峰; 李培正; 黄毫军; 梁炯炯
Original assignee: 中电科（宁波）海洋电子研究院有限公司
Priority date: 2017-05-10
Filing date: 2017-12-25
Publication date: 2018-11-15
Also published as: CN107140170A; CN107140170B

Abstract

A steering apparatus, comprising a housing (1) and a main shaft (2), the front end of the main shaft (2) being provided with a first inner spline (31), the first inner spline (31) being fixed at the rear end of a connecting flange (32), the front end of the connecting flange (32) being connected to a hand wheel by means of a hand wheel shaft (34), the rear side of the main shaft (2) being provided with a second inner spline (24), a driven sprocket (36) being fixed on the outer side of the second inner spline (24), a spline flange (37) being fixed at the rear end of the second inner spline (24), the driven sprocket (36) being connected to a driving sprocket (41) by means of a chain, the driving sprocket (41) being mounted on an output end of a brushless motor (4), the rear end of the main shaft (2) being connected to a marine full-hydraulic steering device, an outer spline (5) capable of sliding axially along the main shaft (2) being sleeved over the main shaft (2), the axial sliding of the outer spline (5) being driven by an electric-powered drive mechanism, and the outer spline (5) being arranged between the first inner spline (31) and the second inner spline (24); driven by the electric-powered drive mechanism, the outer spline (5) engages with the first inner spline (31) or engages with the second inner spline (24). The present steering apparatus can switch between manual and electric-powered steering functions, simplifying the installation process, increasing the degree of automation, and being easy to operate.

Description

Steering device

Technical field

The invention relates to a marine handling device, in particular to a steering device.

Background technique

The ship usually has both manual steering and electric steering functions. The switching between these two functions is generally performed by manually switching the handles manually, and the manual or electric generated steering force is transmitted to the full hydraulic steering gear by the gear clutch at the lower end of the switching handle. Achieving the boat steering function. The disadvantage of this type of steering device is that the switching between the manual steering and the electric steering must be performed by manually operating the switching handle, the degree of automation of the product is low, and the position of the switching handle is required to be opened on the operation surface, which is inconvenient for the operator. Control and installation.

Summary of the invention

The technical problem to be solved by the present invention is to provide a steering device capable of realizing the switching between the manual steering function and the electric steering function of the ship through electronically controlled switching, simplifying the installation process, improving the automation degree of the product, and facilitating the prior art. The operator performs the steering operation to ensure the safety of the operator and avoid misoperation.

The technical solution adopted by the present invention to solve the above technical problem is: a steering device comprising a casing and a main shaft, the front end of the main shaft is provided with a first internal spline, and the first internal spline is fixed to a connection a rear end of the flange, the connecting flange is mounted on the front end of the main shaft via a first deep groove ball bearing, and the front end of the connecting flange is connected with a hand wheel via a hand wheel axle, and the rear side of the main shaft a second inner spline is disposed, the outer side of the second inner spline is fixed with a driven sprocket, and the rear end of the second inner spline is fixed with a spline flange, the spline flange The second deep groove ball bearing is mounted on the rear side of the main shaft, and the driven sprocket is connected to a driving sprocket via a chain, and the driving sprocket is mounted at an output end of a brushless motor. The brushless motor is mounted on the casing, and the rear end of the main shaft is connected to a marine full hydraulic steering gear, and the main shaft is sleeved with an external spline that can slide axially along the main shaft. The axial sliding of the external spline is driven by an electric drive mechanism, and the external spline setting Between the first inner spline and the second inner spline, the first inner spline has a first annular gap between the first inner spline and the main shaft, and the first annular gap An outer diameter is adapted to an outer diameter of the outer spline, the spline teeth of the first inner spline being adapted to the spline teeth of the outer spline, the second inner flower a second annular gap is formed between the key and the main shaft, and an outer diameter of the second annular gap is adapted to an outer diameter of the outer spline, and the second inner spline spline tooth Adapting to the spline teeth of the external spline, the external spline is engaged with the first internal spline or with the second inner portion driven by the electric drive mechanism Spline engagement for manual or electric drive of steering force transmission.

During the working process of the steering device of the present invention, when the electric drive mechanism drives the external spline to engage with the first internal spline, the connecting flange is connected with the main shaft. At this time, the hand wheel is manually turned, the hand wheel shaft rotates, and the main shaft rotates to realize the steering. The manual drive transmitted by the marine full hydraulic steering gear performs the manual steering function of the ship; when the electric drive mechanism drives the external spline to be separated from the first internal spline and engages with the second internal spline, the hand wheel shaft does not rotate with the main shaft. At this time, under the driving of the brushless motor, the driving sprocket drives the driven sprocket to rotate, and then drives the spindle to rotate, that is, realizes the electric drive transmitted by the steering force to the marine full hydraulic steering gear, and performs the electric steering function of the ship. The switching between the manual steering function and the electric steering function of the above ship is completely realized by electronically controlled switching, which simplifies the installation process of the steering device, improves the automation degree of the product, and facilitates the steering operation by the operator. In addition, the steering device has a manual steering spindle. The advantages of the separation from the brushless motor and the separation of the spindle and the handwheel shaft during electric steering are that the manual steering and the electric steering are independently controlled without interference, which can improve the life of each component, ensure the reliability and safety of steering, and ensure operation. The safety of personnel to avoid misuse.

Preferably, the electric drive mechanism comprises a stepping motor, a lead screw and a screw nut adapted to the screw, the stepping motor being mounted on the casing, the wire a bar coupling is connected to the output end of the stepping motor, the screw nut is mounted in a mounting block, and the mounting block is connected to a bearing block via a connecting pin, the bearing seat a rolling bearing is mounted on the outer side of the outer spline, and the outer ring of the rolling bearing is fixed to the bearing seat through a first gland, and the outer spline passes through The second gland is fixed to the inner ring of the rolling bearing. Further, the external spline is connected with an emergency switching mechanism, the emergency switching mechanism includes a central slider, a connecting block, a wire rope and a pull plate, and the first main hole is disposed in the main shaft, a second central hole communicating with the first central hole is disposed in the connecting flange, the central slider is disposed in the first central hole, and the central slider and the external flower are The key is connected by a plurality of bolts, and each of the bolts is screwed with a nut, and the central slider is pressed by a plurality of the nuts, and the spindle is opened with a plurality of The nut is located at a corresponding chute, a plurality of the nuts are disposed in the chute, the connecting block is fixed on the central slider, and the hand wheel shaft is fixed in the a shaft end of the connecting flange, the hand wheel is fixed to the shaft end of the hand wheel shaft, the front end of the hand wheel is pressed by a pressing nut, and the pulling plate is mounted on the rotating pin a front end of the compression nut, one end of the wire rope is fixed to the connecting block, the steel The other end of the rope through the central bore of the second pull is fixed to the plate. Further, one end of each of the bolts is screwed to the center slider, and the other end is threadedly coupled to the bearing housing through one of the nuts and the external splines.

Preferably, the external spline is connected with an emergency switching mechanism, the emergency switching mechanism includes a central slider, a connecting block, a wire rope and a pull plate, and the first main hole is disposed in the main shaft, a second central hole communicating with the first central hole is disposed in the connecting flange, the central slider is disposed in the first central hole, and the central slider and the external flower are The key is connected by a plurality of bolts, and each of the bolts is screwed with a nut, and the central slider is pressed by a plurality of the nuts, and the spindle is opened with a plurality of The nut is located at a corresponding chute, a plurality of the nuts are disposed in the chute, the connecting block is fixed on the central slider, and the hand wheel shaft is fixed in the a shaft end of the connecting flange, the hand wheel is fixed to the shaft end of the hand wheel shaft, the front end of the hand wheel is pressed by a pressing nut, and the pulling plate is mounted on the rotating pin a front end of the compression nut, one end of the wire rope is fixed to the connecting block, the steel The other end of the wire is fixed to the pull plate through the second central hole.

The emergency switching mechanism can further improve the safety of the steering device. During the electric steering operation of the ship, when there is a power failure or electrical failure, the pull plate can be pulled up urgently, and the connecting block is pulled forward by the wire rope, and the external spline is moved forward to separate the outer spline from the second inner spline. And the first internal spline is engaged, and the emergency steering mode is switched to the manual steering mode to ensure that the steering function of the ship is not affected, to avoid a safety accident and to ensure personnel safety.

The advantages of the present invention over the prior art are:

(1) The steering device disclosed by the invention can realize the switching of the manual steering function and the electric steering function of the ship through electronically controlled switching, can simplify the installation process of the steering device, improve the automation degree of the product, and facilitate the steering operation by the operator;

(2) The steering device disclosed by the present invention has the advantages that the main shaft and the brushless motor are disengaged during manual steering, and the main shaft and the hand wheel shaft are disengaged during electric steering. The manual steering and the electric steering are independently controlled without interference, and the components can be improved. Lifetime, ensuring the reliability and safety of steering, ensuring the safety of operators and avoiding misoperations;

(3) The steering device disclosed by the present invention can be urgently switched to the manual steering mode to avoid a safety accident caused by a power failure or an electrical failure in an unexpected situation, and to ensure personnel safety.

DRAWINGS

Figure 1 is an external view of a steering device in an embodiment;

Figure 2 is a schematic plan view showing the structure of the steering device in the embodiment;

3 is a schematic view showing the connection between the electric drive mechanism and the bearing housing in the embodiment;

Figure 4 is a plan view corresponding to Figure 3;

Figure 5 is an enlarged cross-sectional view taken along line A-A of Figure 4;

Figure 6 is an enlarged view of B in Figure 5;

Figure 7 is a cross-sectional view taken along line C-C of Figure 5;

Figure 8 is a schematic view showing the connection of the bearing housing and the mounting block in the embodiment;

Figure 9 is a cross-sectional view taken along line D-D of Figure 8;

Figure 10 is a schematic view showing the structural connection of the hand wheel shaft with the compression nut and the pull plate in the embodiment.

detailed description

The invention will be further described in detail below with reference to the embodiments of the drawings.

The steering device of the first embodiment, as shown, includes a casing 1 and a main shaft 2, and the front end of the main shaft 2 is provided with a first internal spline 31, and the first internal spline 31 is fixed by screws to a connecting flange 32. The connecting flange 32 is mounted on the front end of the main shaft 2 via the first deep groove ball bearing 33, and the front end of the connecting flange 32 is connected to the hand wheel via the hand wheel shaft 34 (larger size, not shown), the main shaft 2 The rear side is provided with a second inner spline 24, the outer side of the second inner spline 24 is welded with a driven sprocket 36, and the rear end of the second inner spline 24 is fixed with a spline flange 37 by a screw, a spline flange 37 is mounted on the rear side of the main shaft 2 via the second deep groove ball bearing 38. The driven sprocket 36 is connected to a drive sprocket 41 via a chain (not shown), and the drive sprocket 41 is mounted on a brushless motor 4 At the output end, the brushless motor 4 is mounted on the casing 1. The rear end of the main shaft 2 is connected to a marine full hydraulic steering gear (not shown), and the main shaft 2 is sleeved to be axially slidable along the main shaft 2. The spline 5, the axial sliding of the external spline 5 is driven by an electric drive mechanism, and the external spline 5 is disposed between the first internal spline 31 and the second internal spline 24, the first internal spline 31 There is a first annular gap 21 between the main shafts 2, the outer diameter of the first annular gap 21 is adapted to the outer diameter of the outer splines 5, and the spline teeth of the first inner spline 31 and the spline teeth of the outer spline 5 Suitably, the second inner spline 24 and the main shaft 2 have a second annular gap 22, the outer diameter of the second annular gap 22 is adapted to the outer diameter of the outer spline 5, and the flower of the second inner spline 24 The key teeth are adapted to the spline teeth of the external spline 5, and the external spline 5 meshes with the first internal spline 31 or with the second internal spline 24 under the driving of the electric drive mechanism to realize the steering force transmission. Manual drive or electric drive.

The steering device of the second embodiment, as shown, includes a casing 1 and a main shaft 2, and the front end of the main shaft 2 is provided with a first internal spline 31, and the first internal spline 31 is fixed by screws to a connecting flange 32. The connecting flange 32 is mounted on the front end of the main shaft 2 via the first deep groove ball bearing 33, and the front end of the connecting flange 32 is connected to the hand wheel via the hand wheel shaft 34 (larger size, not shown), the main shaft 2 The rear side is provided with a second inner spline 24, the outer side of the second inner spline 24 is welded with a driven sprocket 36, and the rear end of the second inner spline 24 is fixed with a spline flange 37 by a screw, a spline flange 37 is mounted on the rear side of the main shaft 2 via the second deep groove ball bearing 38. The driven sprocket 36 is connected to a drive sprocket 41 via a chain (not shown), and the drive sprocket 41 is mounted on a brushless motor 4 At the output end, the brushless motor 4 is mounted on the casing 1. The rear end of the main shaft 2 is connected to a marine full hydraulic steering gear (not shown), and the main shaft 2 is sleeved to be axially slidable along the main shaft 2. The spline 5, the axial sliding of the external spline 5 is driven by an electric drive mechanism, and the external spline 5 is disposed between the first internal spline 31 and the second internal spline 24, the first internal spline 31 and There is a first annular gap 21 between the main shafts 2, the outer diameter of the first annular gap 21 is adapted to the outer diameter of the outer splines 5, and the spline teeth of the first inner spline 31 and the spline teeth of the outer spline 5 Suitably, the second inner spline 24 and the main shaft 2 have a second annular gap 22, the outer diameter of the second annular gap 22 is adapted to the outer diameter of the outer spline 5, and the flower of the second inner spline 24 The key teeth are adapted to the spline teeth of the external spline 5, and the external spline 5 meshes with the first internal spline 31 or with the second internal spline 24 under the driving of the electric drive mechanism to realize the steering force transmission. Manual drive or electric drive.

In the second embodiment, the electric drive mechanism comprises a stepping motor 6, a lead screw 61 and a screw nut 62 adapted to the lead screw 61. The stepping motor 6 is mounted on the casing 1, and the lead screw 61 is coupled to the coupling 63. Connected to the output end of the stepping motor 6, the lead screw nut 62 is mounted in a mounting block 64. The mounting block 64 is connected to a bearing housing 65 via a connecting pin 66. The bearing housing 65 is sleeved on the outer side of the external spline 5, the bearing A rolling bearing 67 is mounted on the seat 65. The outer ring of the rolling bearing 67 is fixed to the bearing housing 65 by a first gland 68, and the outer spline 5 is fixed to the inner ring of the rolling bearing 67 by a second gland 69.

The steering device of the third embodiment, as shown, includes a casing 1 and a main shaft 2, and the front end of the main shaft 2 is provided with a first internal spline 31, and the first internal spline 31 is fixed by screws to a connecting flange 32. The connecting flange 32 is mounted on the front end of the main shaft 2 via the first deep groove ball bearing 33, and the front end of the connecting flange 32 is connected to the hand wheel via the hand wheel shaft 34 (larger size, not shown), the main shaft 2 The rear side is provided with a second inner spline 24, the outer side of the second inner spline 24 is welded with a driven sprocket 36, and the rear end of the second inner spline 24 is fixed with a spline flange 37 by a screw, a spline flange 37 is mounted on the rear side of the main shaft 2 via the second deep groove ball bearing 38. The driven sprocket 36 is connected to a drive sprocket 41 via a chain (not shown), and the drive sprocket 41 is mounted on a brushless motor 4 At the output end, the brushless motor 4 is mounted on the casing 1. The rear end of the main shaft 2 is connected to a marine full hydraulic steering gear (not shown), and the main shaft 2 is sleeved to be axially slidable along the main shaft 2. The spline 5, the axial sliding of the external spline 5 is driven by an electric drive mechanism, and the external spline 5 is disposed between the first internal spline 31 and the second internal spline 24, the first internal spline 31 and There is a first annular gap 21 between the main shafts 2, the outer diameter of the first annular gap 21 is adapted to the outer diameter of the outer splines 5, and the spline teeth of the first inner spline 31 and the spline teeth of the outer spline 5 Suitably, the second inner spline 24 and the main shaft 2 have a second annular gap 22, the outer diameter of the second annular gap 22 is adapted to the outer diameter of the outer spline 5, and the flower of the second inner spline 24 The key teeth are adapted to the spline teeth of the external spline 5, and the external spline 5 meshes with the first internal spline 31 or with the second internal spline 24 under the driving of the electric drive mechanism to realize the steering force transmission. Manual drive or electric drive.

In the third embodiment, the electric drive mechanism comprises a stepping motor 6, a lead screw 61 and a screw nut 62 adapted to the lead screw 61. The stepping motor 6 is mounted on the casing 1, and the lead screw 61 is coupled to the coupling 63. Connected to the output end of the stepping motor 6, the lead screw nut 62 is mounted in a mounting block 64. The mounting block 64 is connected to a bearing housing 65 via a connecting pin 66. The bearing housing 65 is sleeved on the outer side of the external spline 5, the bearing A rolling bearing 67 is mounted on the seat 65. The outer ring of the rolling bearing 67 is fixed to the bearing housing 65 by a first gland 68, and the outer spline 5 is fixed to the inner ring of the rolling bearing 67 by a second gland 69.

In the third embodiment, an emergency switching mechanism is connected to the external spline 5, and the emergency switching mechanism includes a central slider 71, a connecting block 72, a wire rope (not shown), and a pull plate 73. The first center is disposed in the main shaft 2. a hole 23, a second center hole 39 communicating with the first center hole 23 is disposed in the connecting flange 32, the center slider 71 is disposed in the first center hole 23, and the center slider 71 and the external spline 5 pass through the plurality of bolts 74, each bolt 74 is screwed to a nut 75, the central slider 71 is pressed by a plurality of nuts 75, the main shaft 2 is provided with a sliding groove 76 corresponding to the position of the plurality of nuts 75, a plurality of screws The cap 75 is disposed in the chute 76, the connecting block 72 is fixed on the center slider 71, the hand wheel shaft 34 is welded to the shaft end of the connecting flange 32, and the hand wheel is fixed to the shaft end of the hand wheel shaft 34, and the front end of the hand wheel is The pressing nut 35 is pressed, and the pulling plate 73 is mounted on the front end of the pressing nut 35 via the rotating pin 77. One end of the wire rope is fixed on the connecting block 72, and the other end of the wire rope is fixed on the pulling plate 73 through the second center hole 39. .

The steering device of the fourth embodiment, as shown, includes a casing 1 and a main shaft 2, and the front end of the main shaft 2 is provided with a first internal spline 31, and the first internal spline 31 is fixed by screws to a connecting flange 32. The connecting flange 32 is mounted on the front end of the main shaft 2 via the first deep groove ball bearing 33, and the front end of the connecting flange 32 is connected to the hand wheel via the hand wheel shaft 34 (larger size, not shown), the main shaft 2 The rear side is provided with a second inner spline 24, the outer side of the second inner spline 24 is welded with a driven sprocket 36, and the rear end of the second inner spline 24 is fixed with a spline flange 37 by a screw, a spline flange 37 is mounted on the rear side of the main shaft 2 via the second deep groove ball bearing 38, and the driven sprocket 36 is connected to a drive sprocket 41 via a chain (not shown), and the drive sprocket 41 is mounted on a brushless motor 4 At the output end, the brushless motor 4 is mounted on the casing 1. The rear end of the main shaft 2 is connected to a marine full hydraulic steering gear (not shown), and the main shaft 2 is sleeved to be axially slidable along the main shaft 2. The spline 5, the axial sliding of the external spline 5 is driven by an electric drive mechanism, and the external spline 5 is disposed between the first internal spline 31 and the second internal spline 24, the first internal spline 31 There is a first annular gap 21 between the main shafts 2, the outer diameter of the first annular gap 21 is adapted to the outer diameter of the outer splines 5, and the spline teeth of the first inner spline 31 and the spline teeth of the outer spline 5 Suitably, the second inner spline 24 and the main shaft 2 have a second annular gap 22, the outer diameter of the second annular gap 22 is adapted to the outer diameter of the outer spline 5, and the flower of the second inner spline 24 The key teeth are adapted to the spline teeth of the external spline 5, and the external spline 5 meshes with the first internal spline 31 or with the second internal spline 24 under the driving of the electric drive mechanism to realize the steering force transmission. Manual drive or electric drive.

In the fourth embodiment, the electric drive mechanism comprises a stepping motor 6, a lead screw 61 and a screw nut 62 adapted to the lead screw 61. The stepping motor 6 is mounted on the casing 1, and the lead screw 61 is coupled to the coupling 63. Connected to the output end of the stepping motor 6, the lead screw nut 62 is mounted in a mounting block 64. The mounting block 64 is connected to a bearing housing 65 via a connecting pin 66. The bearing housing 65 is sleeved on the outer side of the external spline 5, the bearing A rolling bearing 67 is mounted on the seat 65. The outer ring of the rolling bearing 67 is fixed to the bearing housing 65 by a first gland 68, and the outer spline 5 is fixed to the inner ring of the rolling bearing 67 by a second gland 69.

In the fourth embodiment, an emergency switching mechanism is connected to the external spline 5, and the emergency switching mechanism includes a central slider 71, a connecting block 72, a wire rope and a pull plate 73. The main shaft 2 is provided with a first central hole 23, and the connecting flange 32 is provided. A second central hole 39 communicating with the first central hole 23 is disposed therein, the central slider 71 is disposed in the first central hole 23, and the central slider 71 is connected to the external spline 5 by a plurality of bolts 74, each of which is 74 The upper thread is connected with a nut 75, one end of each bolt 74 is screwed to the central slider 71, and the other end is threadedly connected to the bearing seat 65 through a nut 75 and an external spline 5, and the center slider 71 is mostly The nut 75 is pressed, and the main shaft 2 is provided with a sliding groove 76 corresponding to the position of the plurality of nuts 75. The plurality of nuts 75 are disposed in the sliding groove 76, and the connecting block 72 is fixed on the central sliding block 71. 34 is welded to the shaft end of the connecting flange 32, the hand wheel is fixed to the shaft end of the hand wheel shaft 34, the front end of the hand wheel is pressed by a pressing nut 35, and the pulling plate 73 is mounted on the front end of the pressing nut 35 via the rotating pin 77. One end of the wire rope is fixed on the connecting block 72, and the other end of the wire rope is fixed through the second center hole 39. 73.

During the operation of the steering device, the stepping motor 6 drives the screw 61 to rotate, and converts the rotary motion of the stepping motor 6 into a linear motion of the screw nut 62, thereby driving the bearing housing 65 to move back and forth, so that the external splines 5 and the An internal spline 31 engages or engages the second internal spline 24 to effect manual or electric drive of steering force transmission.

When the electric drive mechanism drives the external spline 5 to engage with the first internal spline 31, the front end of the external spline 5 is located in the first annular gap 21, the rear end is separated from the second annular gap 22, and the connecting flange 32 is connected to the main shaft 2. At this time, the hand wheel is manually turned, the hand wheel shaft 34 rotates, and the spindle 2 is rotated to realize the manual driving of the steering force to the marine full hydraulic steering gear, and the manual steering function of the ship is performed; when the electric drive mechanism drives the external spline 5 and When the first inner spline 31 is separated and engaged with the second inner spline 24, the rear end of the outer spline 5 is located in the second annular gap 22, the front end is disengaged from the first annular gap 21, and the hand wheel shaft 34 does not rotate with the main shaft 2. At this time, under the driving of the brushless motor 4, the driving sprocket 41 drives the driven sprocket 36 to rotate, thereby driving the spindle 2 to rotate, that is, realizing the electric driving of the steering force to the marine full hydraulic steering gear, and performing electric steering of the ship. Features. The switching between the manual steering function and the electric steering function of the above ship is completely realized by electronically controlled switching, which simplifies the installation process of the steering device, improves the automation degree of the product, and facilitates the steering operation by the operator. In addition, the steering device has a manual steering spindle. 2 The advantage of the detachment from the brushless motor 4 and the disengagement of the spindle 2 and the hand wheel shaft 34 during the electric steering, the manual steering and the electric steering are independently controlled without interference, which can improve the life of each component and ensure the reliability and safety of the steering. Sex, to ensure the safety of the operator, to avoid misuse.

The emergency switching mechanism can further improve the safety of the steering device. During the electric steering operation of the ship, when there is a power failure or an electrical failure, the pull plate 73 can be pulled up urgently, and the connecting block 72 is pulled forward by the wire rope, and the external spline 5 is moved forward to make the external spline 5 and the second The inner spline 24 is separated and meshed with the first inner spline 31, and the emergency switch mode is switched to the manual steering mode to ensure that the steering function of the ship is not affected, to avoid a safety accident and to ensure personnel safety.

Claims

A steering device, comprising: a casing and a main shaft, wherein a front end of the main shaft is provided with a first internal spline, and the first internal spline is fixed to a rear end of a connecting flange, a connecting flange is mounted on the front end of the main shaft via a first deep groove ball bearing, a front end of the connecting flange is connected with a hand wheel via a hand wheel shaft, and a second inner spline is disposed on a rear side of the main shaft. The outer side of the second inner spline is fixed with a driven sprocket, and the rear end of the second inner spline is fixed with a spline flange, and the spline flange is mounted on the second deep groove ball bearing The rear side of the main shaft, the driven sprocket is connected to a driving sprocket via a chain, the driving sprocket is mounted at an output end of a brushless motor, and the brushless motor is installed in the The rear end of the main shaft is connected to a marine full hydraulic steering gear, and the main shaft is sleeved with an external spline that can slide axially along the main shaft, and the outer spline shaft The sliding is driven by an electric drive mechanism, and the external splines are disposed at the first inner spline and the second Between the splines, the first inner spline has a first annular gap between the first inner spline and the main shaft, and the outer diameter of the first annular gap is adapted to the outer diameter of the outer spline. The spline teeth of the first internal spline are adapted to the spline teeth of the external spline, and the second internal spline has a second annular gap between the main shaft and the main shaft, The outer diameter of the second annular gap is adapted to the outer diameter of the outer spline, and the spline teeth of the second inner spline are adapted to the spline teeth of the outer spline. Under the driving of the electric driving mechanism, the external spline is engaged with the first internal spline or with the second internal spline to realize manual driving or electric driving of the steering force transmission.
A steering apparatus according to claim 1, wherein said electric drive mechanism comprises a stepping motor, a lead screw and a screw nut adapted to said screw, said stepping motor Mounted on the casing, the lead screw is connected to the output end of the stepping motor via a coupling, the screw nut is mounted in a mounting block, and the mounting block and the mounting block The bearing seat is connected by a connecting pin, the bearing seat is sleeved on the outer side of the external spline, the bearing seat is mounted with a rolling bearing, and the outer ring of the rolling bearing is fixed by the first gland In the bearing housing, the external spline is fixed to the inner ring of the rolling bearing by a second gland.
The steering device according to claim 1, wherein the external spline is connected with an emergency switching mechanism, and the emergency switching mechanism comprises a center slider, a connecting block, a wire rope and a pull plate, a first central hole is disposed in the main shaft, a second central hole communicating with the first central hole is disposed in the connecting flange, and the central slider is disposed in the first central hole The central slider is connected to the external spline through a plurality of bolts, and each of the bolts is screwed with a nut, and the central slider is pressed by a plurality of the nuts. The main shaft is provided with a sliding slot corresponding to a plurality of the positions of the nut, a plurality of the nuts are disposed in the sliding slot, and the connecting block is fixed at the center sliding Block, the hand wheel shaft is fixed to the shaft end of the connecting flange, the hand wheel is fixed to the shaft end of the hand wheel shaft, and the front end of the hand wheel is pressed by a pressing nut The pull plate is reversibly mounted on the front end of the compression nut, the wire rope One end is fixed to the connecting block, and the other end of the wire rope is fixed to the pull plate through the second central hole.
A steering apparatus according to claim 2, wherein said external spline is connected with an emergency switching mechanism, said emergency switching mechanism comprising a center slider, a connecting block, a wire rope and a pull plate, a first central hole is disposed in the main shaft, a second central hole communicating with the first central hole is disposed in the connecting flange, and the central slider is disposed in the first central hole The central slider is connected to the external spline through a plurality of bolts, and each of the bolts is screwed with a nut, and the central slider is pressed by a plurality of the nuts. The main shaft is provided with a sliding slot corresponding to a plurality of the positions of the nut, a plurality of the nuts are disposed in the sliding slot, and the connecting block is fixed at the center sliding Block, the hand wheel shaft is fixed to the shaft end of the connecting flange, the hand wheel is fixed to the shaft end of the hand wheel shaft, and the front end of the hand wheel is pressed by a pressing nut The pull plate is reversibly mounted on the front end of the compression nut, the wire rope A second end fixed to the center hole of the connecting piece, the other end of the rope through the pull fixing plate.
A steering apparatus according to claim 4, wherein one end of each of said bolts is screwed to said center slider, and the other end passes through said one of said nut and said outer The spline is threadedly coupled to the bearing housing.