Installation device and installation method for large ship shaft rudder system

Abstract

The invention discloses an installation device and method for a large ship shaft-rudder system, and belongs to the technical field of ship shaft-rudder system installation. The installation device of the large ship shaft rudder system comprises a rail and a tail shaft installation tool capable of moving in the length direction of the rail. The tail shaft mounting tool comprises a V-shaped bracket capable of moving on the tail shaft mounting tool in the height and width directions of the track; the paddle mounting tool comprises a first axis vehicle or a first flat car and a paddle supporting tool mounted on the first axis vehicle or the first flat car; the rudder blade installation tool comprises a second axis vehicle or a second flat car and a rudder blade supporting tool installed on the second axis vehicle or the second flat car. According to the mounting method, the mounting device is used for sequentially mounting the tail shaft, the paddle and the rudder blade, accurate and efficient mounting of a large ship shaft-rudder system can be achieved on the premise that a ship body is not damaged, dock period occupation is reduced, and the production cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of ship shaft and rudder system installation, and in particular relates to an installation device and an installation method for a large ship shaft and rudder system. Background Art

[0002] With the prosperity of the shipping market, the demand for cargo transportation and the comprehensive factors of transportation costs, civil transport ships are getting bigger and bigger, and the shaft and rudder equipment are correspondingly increased. The size and tonnage of the equipment are much larger than those of previous ships. The weight of the current large-scale ship propeller shaft, propeller, rudder blade and other major components can reach 30 tons to 50 tons. The traditional shaft and rudder equipment installation method can no longer meet the installation of the shaft and rudder equipment of large ships. The installation of the shaft and rudder system is a key process before the launch of a newly built ship. For example, the invention patent with application number 200810124129.8 discloses the shaft and rudder system installation process of a 10,000-ton special multi-purpose ship. First, the center line of the shaft system and the center line of the rudder system are determined before the ship is launched, and then the stern tube is positioned and epoxy poured. After the waterproof sealing plate is installed, the ship is launched, and then the stern shaft, propeller, rudder stock and rudder blade are installed. The quality of the shaft and rudder system installation will affect the navigation performance and service life of the ship. The efficiency of its installation will affect the construction cycle of the ship, and then affect the docking period.

[0003] Regarding the installation method of the shaft rudder system of a ship, the current installation method of the shaft rudder system has the following disadvantages: (1) The installation of the stern shaft, propeller blades and rudder blades is carried out by hoisting and pulling. A certain number of ear plates need to be installed above the hull to hang the hoist, which causes certain damage to the hull base material; (2) The existing equipment installation method is to use a manual hoist, which requires a large number of construction workers and has high labor intensity; (3) The equipment installation and positioning is difficult and cannot be accurately positioned. Construction personnel need to make continuous adjustments, which takes a long time to install and has a great impact on the docking period of ship construction; (4) Since the equipment is pulled by a hoist, the force at each point is uneven. During the operation, the equipment is prone to shaking and swinging, which can easily cause bumps and collisions, and have a certain impact on the equipment; These problems with the existing installation methods result in a large number of construction workers and a long installation period during the current installation process, which leads to a significant increase in equipment installation costs. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an installation device and an installation method for a shaft rudder system of a large ship with high installation quality, high efficiency and fewer construction workers.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: an installation device for a shaft rudder system of a large ship, comprising: A track, and a tail shaft installation tool that can move along the length direction of the track; the tail shaft installation tool includes a V-shaped bracket, and the V-shaped bracket can move on the tail shaft installation tool along the height and width directions of the track; Blade installation tooling; the blade installation tooling includes a first axis vehicle or a first flatbed vehicle, and a blade support tooling installed thereon; Rudder blade installation tooling; the rudder blade installation tooling includes a second axis vehicle or a second flatbed vehicle, and a rudder blade supporting tooling installed thereon.

[0006] Another technical solution adopted by the present invention is: a method for installing a shaft rudder system of a large ship, using the above-mentioned installation device, comprising the following steps: S1, stern shaft installation: S1.1. Install the track according to the longitudinal centerline of the stern shaft installation and install at least two stern shaft installation tools on the track; S1.2. Place the stern shaft with a dummy shaft installed at the stern end on the V-shaped bracket on the tail shaft installation tooling; S1.3. Driven by the tail shaft installation tool, the stern shaft with the dummy shaft installed moves toward the stern; S1.4. When the end of the dummy shaft extends out of the stern hub, hold the dummy shaft to maintain overall balance and continue to push the tail shaft installation tooling until the stern shaft reaches the installation position; S1.5. Achieve precise positioning by adjusting the tail shaft installation tooling, and then complete the stern shaft installation; S2. Blade installation: Place the blade on the blade support fixture, and use the first axis vehicle or the first flatbed vehicle to transport the blade to the installation position; then use the first axis vehicle or the first flatbed vehicle to lift and adjust the blade into place, and then complete the blade installation; S3, rudder blade installation: place the rudder blade on the rudder blade supporting tooling, use the second axis vehicle or the second flatbed vehicle to transport the rudder blade to the installation position; then use the second axis vehicle or the second flatbed vehicle to lift and adjust the rudder blade into place, and then complete the rudder blade installation.

[0007] The beneficial effect of the present invention is that the installation method of the shaft and rudder system of a large ship provided by the present invention utilizes new installation devices and cooperates with each other, which can achieve accurate and efficient installation of the shaft and rudder system of a large ship without damaging the hull, thereby reducing the docking time and significantly reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a partial structural schematic diagram of a tail shaft installation tool according to a specific embodiment of the present invention; Figure 2 It is another partial structural schematic diagram of the tail shaft installation tooling according to a specific embodiment of the present invention; Figure 3It is a structural schematic diagram of a blade supporting tooling according to a specific embodiment of the present invention; Figure 4 It is a structural schematic diagram of a blade supporting tooling at another angle according to a specific embodiment of the present invention; Figure 5 It is a structural schematic diagram of a saddle according to a specific embodiment of the present invention; Figure 6 It is a structural schematic diagram of a rudder blade installation tooling according to a specific embodiment of the present invention; Figure 7 It is a structural schematic diagram of the rudder blade supporting tooling from another angle according to a specific embodiment of the present invention; Figure 8 It is a structural schematic diagram of a locking device according to a specific embodiment of the present invention; Fig. 9 It is a structural schematic diagram of a dummy shaft according to a specific embodiment of the present invention; Fig.10 It is a schematic diagram of the installation of the stern shaft according to a specific embodiment of the present invention; Fig.11 It is a schematic diagram of the installation of the blades according to a specific embodiment of the present invention; Fig.12 It is a schematic diagram of the installation of the rudder blade according to a specific embodiment of the present invention; Description of labels: 1. Tail shaft installation tool; 11. V-shaped bracket; 111. Cylinder; 12. Mounting frame; 13. Roller; 14. Friction plate; 15. Adjusting bolt; 2. Blade installation tool; 21. First flatbed car; 22. Blade support tool; 221. First chassis; 222. Fixing frame; 223. Saddle; 2231. Curved panel; 2232. Web plate; 2233. Bottom plate; 2234. Partition plate; 224. First crossbeam; 225. Second crossbeam; 226. Installation hole; 227. Blade installation platform; 3. Rudder blade installation tooling; 31. Second flatbed car; 32. Rudder blade support tooling; 321. Second chassis; 322. Main support frame; 323. Bow support frame; 324. Locking device; 3241. Casing; 3242. Inner tube; 3243. Closing plate; 325. Rudder blade installation platform; 4. Track; 5. Stern shaft; 6. dummy shaft; 61. round tube; 62. ear plate; 7. Paddle blade; 8. Rudder blade; 9. Rudder ball; 10. Guardrail; 11. Ladder. DETAILED DESCRIPTION

[0009] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0010] The installation device of the shaft rudder system of a large ship includes: A track, and a tail shaft mounting fixture movable along the length direction of the track; the tail shaft mounting fixture includes a V-shaped bracket, and the V-shaped bracket is movable on the tail shaft mounting fixture along the height and width direction of the track; Blade installation tooling; the blade installation tooling includes a first axis vehicle or a first flatbed vehicle, and a blade support tooling installed thereon; Rudder blade installation tooling; the rudder blade installation tooling includes a second axis vehicle or a second flatbed vehicle, and a rudder blade supporting tooling installed thereon.

[0011] The installation method of the shaft rudder system of a large ship is carried out using the above-mentioned installation device, and comprises the following steps: S1, stern shaft installation: S1.1. Install the track according to the longitudinal centerline of the stern shaft installation and install at least two stern shaft installation tools on the track; S1.2. Place the stern shaft with a dummy shaft installed at the stern end on the V-shaped bracket on the tail shaft installation tooling; S1.3. Driven by the tail shaft installation tool, the stern shaft with the dummy shaft installed moves toward the stern; S1.4. When the end of the dummy shaft extends out of the stern hub, hold the dummy shaft to maintain overall balance and continue to push the tail shaft installation tooling until the stern shaft reaches the installation position; S1.5. Achieve precise positioning by adjusting the tail shaft installation tooling, and then complete the stern shaft installation; S2. Blade installation: Place the blade on the blade support fixture, and use the first axis vehicle or the first flatbed vehicle to transport the blade to the installation position; then use the first axis vehicle or the first flatbed vehicle to lift and adjust the blade into place, and then complete the blade installation; S3, rudder blade installation: place the rudder blade on the rudder blade supporting tooling, use the second axis vehicle or the second flatbed vehicle to transport the rudder blade to the installation position; then use the second axis vehicle or the second flatbed vehicle to lift and adjust the rudder blade into place, and then complete the rudder blade installation.

[0012] From the above description, it can be seen that the beneficial effects of the present invention are: the installation method of the shaft rudder system of a large ship provided by the present invention is suitable for large ships whose major components can weigh 30 to 50 tons. The installation method uses new installation devices and cooperates with each other to reduce the difficulty of installing the shaft rudder system of a large ship, and can achieve accurate and efficient installation of the shaft rudder system of a large ship without damaging the hull. Compared with the traditional method, the installation time of the shaft rudder system of a ship of similar or same tonnage is reduced by at least 5 days, the number of construction personnel is reduced by at least 35 people, the docking period is reduced by at least 5 days, and the overall installation cost is reduced by about 250,000 yuan / batch.

[0013] Further, the blade supporting tooling includes a first chassis, and two fixing frames arranged on the first chassis, and the two fixing frames are arranged opposite to each other; The fixing frame is provided with saddles, and the two saddles are used for supporting the two ends of the propeller hub of the propeller blade.

[0014] Furthermore, the saddle includes an arc-shaped panel, a web, a bottom plate, and a partition; the arc-shaped panel, the web and the bottom plate are connected in sequence, at least three partitions are arranged between the arc-shaped panel and the bottom plate, and the partitions are perpendicular to the web and the bottom plate. A mounting hole is arranged on the bottom plate.

[0015] The curvature of the curved panel is determined according to the size of the propeller blade. The saddle is detachably connected to the fixing frame, and only the corresponding saddle needs to be replaced according to the size of the installed propeller blade. The cross section of the saddle is a trapezoidal or quasi-trapezoidal structure with a larger upper portion and a smaller lower portion, which can form a clearance space for the blade of the propeller blade.

[0016] Furthermore, a crossbeam is provided between the saddle and the fixing frame.

[0017] Furthermore, a first cross beam and a second cross beam are provided between the saddle and the fixing frame.

[0018] The cross section of the first cross beam is a right-angled trapezoid with a small top and a large bottom, and the right-angled side is arranged toward the placement position of the blade. The upper bottom surface of the first cross beam is provided with a mounting hole. The upper bottom surface of the first cross beam and the lower bottom surface (bottom plate) of the saddle are further connected through the mounting holes of the two and the matching bolts.

[0019] The second crossbeam is an I-beam, and the upper and lower panels of the I-beam are both provided with mounting holes.

[0020] The mounting hole 226 is preferably a screw hole (threaded hole).

[0021] The first crossbeam and the second crossbeam are used to adjust the saddle support height to meet the height between the bottom of the propeller blade and the bottom surface of the installation space to prevent the propeller blade from hitting the bottom surface. The number and size of the crossbeams can be selected and adjusted according to the size of the propeller blade.

[0022] Furthermore, a blade mounting platform is provided on the upper portion of the fixing frame, a guardrail is provided on the periphery of the blade mounting platform, and a ladder, such as an inclined ladder, is provided on the fixing frame.

[0023] Further, the rudder blade supporting tooling comprises a second chassis, and a main supporting frame and a bow supporting frame arranged on the second chassis; A locking device is provided on the main support frame, and the locking device is used to fix the rudder blade on the main support frame; The bow support bracket is used to support the rudder bulb.

[0024] The main support frame comprises a left main support frame and a right main support frame, which have the same structure and are arranged opposite to each other. By adjusting the locking device, the rudder blade is fixed between the left and right main support frames.

[0025] Furthermore, a rudder blade installation platform is provided on the upper part of the main support frame, a guardrail is provided on the periphery of the rudder blade installation platform, and a ladder is provided on the main support frame, such as a straight ladder. The above structure is arranged to facilitate safe construction by operators. The main support frame can be composed of multiple square tubes, and the main support frame serves to connect the platform with the second chassis and transfer the upper load to the chassis through the main support frame.

[0026] Furthermore, a height adjustment device is provided on the top of the bow support frame, and a support plate is provided on the top of the height adjustment device, and the support plate is used to support the rudder ball. The bow support frame is composed of a plurality of square tubes, which supports the rudder ball and prevents the rudder blade from tipping forward and backward. The bow support frame is connected to the second chassis by bolts, and when the rudder blade is transported to the installation position, the bow support frame can be removed if it interferes with the propeller blade.

[0027] Furthermore, the locking device includes a sleeve connected to the main support frame, and an inner tube threadedly connected to the sleeve; sealing plates are provided at both ends of the inner tube. The sleeve is fixed to the main support frame, and by rotating the inner tube, the sealing plate at one end of the inner tube is pressed against the rudder blade, thereby achieving the locking of the rudder blade. In order to lock the rudder blade more stably, there are at least four locking devices, which are respectively located at the upper part of the left and right support frames, and the lower part of the left and right support frames.

[0028] Furthermore, the second chassis is a saddle-shaped box structure made of steel plate, that is, the middle part is concave downward, which can provide a solid force-bearing foundation for the whole. The second chassis is detachably connected to the second axle vehicle or the second flatbed vehicle.

[0029] Furthermore, the dummy shaft includes a round tube, and an ear plate is provided at one end of the round tube. The dummy shaft is detachably connected to the tail shaft through a flange and other structures. The dummy shaft plays a role of extension and extension, passes through the stern tube, and first uses the ear plate to cooperate with the outside to achieve lifting force. At the same time, there is no need to weld on the stern shaft and then remove the ear plate, which can avoid damage to the hull itself and improve installation accuracy and reduce installation difficulty.

[0030] refer to Figures 1 to 9 According to one embodiment of the present invention, a large ship shaft rudder system installation device comprises: Track 4 and tail shaft installation tool 1; tail shaft installation tool 1 includes a mounting base; The blade installation tool 2 includes a first axis vehicle or a first flatbed vehicle 21, and a blade support tool 22 installed thereon; Rudder blade installation tool 3; the rudder blade installation tool 3 includes a second axis vehicle or a second flatbed vehicle 31, and a rudder blade support tool 32 installed thereon; The dummy shaft 6 comprises a round tube 61, and one end of the round tube 61 is provided with an ear plate 62; The mounting frame includes a mounting frame 12 and rollers 13 arranged at both ends of the mounting frame 12, which can drive the mounting frame 12 and other mechanisms on the mounting frame 12 to move along the length direction of the track 4; a friction plate 14 is arranged on the mounting frame 12; the friction plate 14 includes a plurality of annular oil grooves arranged in concentric circles; a V-shaped bracket 11 for supporting the stern shaft 5 is arranged on the friction plate 14, and the V-shaped bracket 11 is connected to the mounting frame 12 by an adjusting bolt 15; the adjusting bolt 15 is used to control the distance between the V-shaped bracket 11 and the left and right sides of the mounting frame 12, and the setting of the friction plate 14 can reduce the friction during the movement. The friction force is more convenient for adjustment; the V-shaped bracket 11 includes two cylinders 111, and a hydraulic cylinder is arranged inside the cylinder 111, which is connected to the mounting base and used to lift the V-shaped bracket 11; the hydraulic cylinder is installed in the cylinder 111 through a sealing flange; the V-shaped bracket 11 is made of high-strength steel by integral machining; the friction pad and the adjusting bolt 15 cooperate to enable the V-shaped bracket 11 to move on the tail shaft mounting fixture 1 along the width direction of the track 4; the mounting base is also provided with a manual hydraulic pump, which is connected to the hydraulic cylinder; the hydraulic cylinder is pressurized by the manual hydraulic pump, so that the hydraulic cylinder lifts the V-shaped bracket 11; The blade support tooling 22 includes a first chassis 221 and two fixing frames 222 arranged on the first chassis 221. The two fixing frames 222 are arranged opposite to each other. The fixing frames 222 are arranged from bottom to top in sequence with a second crossbeam 225, a first crossbeam 224 and a saddle 223; the second crossbeam 225 is an I-beam, and both the upper and lower panels of the I-beam are provided with threaded holes; the cross section of the first crossbeam 224 is a right-angled trapezoid with a small top and a large bottom, and its right-angled side is arranged toward the placement position of the blade 7, and the upper bottom surface of the first crossbeam 224 is also provided with a threaded hole; the saddle 223 includes an arc-shaped panel 2231, a web 2232, and a bottom plate 223 3. Partition 2234; the curved panel 2231, the web 2232 and the bottom plate 2233 are connected in sequence, at least three partitions 2234 are arranged between the curved panel 2231 and the bottom plate 2233, and the partitions 2234, the web 2232 and the bottom plate 2233 are perpendicular to each other; threaded holes are also arranged on the bottom plate 2233; the fixing frame 222, the second crossbeam 225, the first crossbeam 224 and the saddle 223 are connected in sequence by bolts, nuts and threaded holes; the upper part of the fixing frame 222 is provided with a blade mounting platform 227, the outer periphery of the blade mounting platform 227 is provided with a guardrail 10, and the fixing frame 222 is provided with an oblique ladder 11; Among them, the rudder blade supporting tooling 32 includes a second chassis 321, and a main support frame 322 and a bow support frame 323 arranged on the second chassis 321; the main support frame 322 includes a left main support frame and a right main support frame, which have the same structure and are arranged opposite to each other; a locking device 324 is respectively provided at the upper and lower parts of the left main support frame and the right main support frame, and the locking device 324 includes a sleeve 3241 connected to the left main support frame or the right main support, and an inner tube 3242 threadedly connected to the sleeve 3241; sealing plates 3243 are provided at both ends of the inner tube 3242; a rudder blade mounting platform 325 is provided on the upper part of the left main support frame and the right main support frame, and a guardrail 10 is provided on the periphery of the rudder blade mounting platform 325, and a vertical ladder 11 is provided on the main support frame 322; the second chassis 321 is a saddle-shaped box structure made of steel plate.

[0031] refer to Figures 1 to 12 Another embodiment of the present invention is a method for installing a shaft rudder system of a large ship, which is performed using the installation device in the previous embodiment, and specifically includes the following steps: S1, stern shaft 5 installation: S1.1. Draw the longitudinal centerline of the stern shaft 5 on the bottom plate 2233 of the engine room of the ship where it is installed; S1.2. According to the length of the stern shaft 5, the position of the object hanging port and the weight of the stern shaft 5, a number of platform support rods and platforms are arranged on both sides of the longitudinal center line of the stern shaft 5. The platform support rods are in the form of screws and can be adjusted in height; S1.3. Install the track 4 on the platform in accordance with the platform centerline and the stern shaft 5 centerline, and adjust the levelness of the platform through the platform support rod; S1.4. Arrange the track 4 on the platform according to the left and right wheelbase of the tail shaft installation tool 1, aligned with the center line of the stern shaft 5, and adjust the horizontality of the track 4 by adding or removing spacers or platform support rods; S1.5. Install two tail shaft installation fixtures 1 on the track 4 and conduct a forward and backward rolling test run. At the same time, the V-shaped bracket 11 of the tail shaft installation fixture 1 is adjusted left and right (in the width direction of the track 4) by using the friction plate 14 and the adjusting bolt 15, and the height of the tail shaft 5 is adjusted by using the hydraulic cylinder; S1.6. Lift the stern shaft 5 with the dummy shaft 6 installed at the stern end through the main engine lifting port, into the engine room, and place it on the V-shaped bracket 11 on the installation tool; S1.7. Driven by the tail shaft installation tool 1, the tail shaft 5 equipped with the dummy shaft 6 moves toward the stern; S1.8. After the end of the dummy shaft 6 extends out of the stern hub, the dummy shaft 6 is suspended by the ear plate 62 to maintain the overall balance and continue to push the tail shaft installation tool 1 until the stern shaft 5 reaches the installation position; S1.9. The stern shaft 5 is finely adjusted by using the adjusting bolt 15 and the hydraulic cylinder to perform precise positioning installation, thereby completing the installation of the stern shaft 5; S2, blade 7 installation: S2.1. Hoist the blade 7 onto the blade supporting fixture 22; both ends of the hub of the blade 7 are supported on the arc surface of a saddle 223 respectively; S2.2, hoist the blade 7 and the blade support fixture 22 as a whole onto the first axis vehicle or the first flatbed vehicle 21; S2.3, using the first axis vehicle or the first flatbed vehicle 21 to transport the blade 7 to below the installation position; S2.4, using the first axis vehicle or the first flatbed vehicle 21 to lift the blade 7 to the theoretical installation height position; S2.5. Use the first axis vehicle or the first flatbed vehicle 21 to make a slight position adjustment, align the stern shaft 5, move forward a certain distance, complete the positioning of the blade 7, and complete the installation of the blade 7; S3, rudder blade 8 installation: S3.1. Hoist the rudder blade 8 onto the rudder blade supporting fixture 32. The rudder ball 9 is supported on the top of the bow supporting frame 323. Adjust the locking device 324 to fix the rudder blade 8 between the left and right main supporting frames 322. S3.2, hoist the rudder blade 8 and the rudder blade supporting tool 32 as a whole onto the second axis vehicle or the second flatbed vehicle 31; S3.3, using the second axle vehicle or the second flatbed vehicle 31 to transport the rudder blade 8 to below the installation position; S3.4. Use the second axle vehicle or the second flatbed vehicle 31 to lift the rudder blade 8 to the theoretical installation height position; S3.5. Use the second axis vehicle or the second flatbed vehicle 31 to fine-tune the position, align the rudder stock, move forward a certain distance, complete the positioning, and complete the installation of the rudder blade 8.

[0032] In summary, the installation method of the shaft rudder system of a large ship provided by the present invention has the following advantages: (1) By using the new installation device and cooperating with each other, it is no longer necessary to install ear plates on the hull, thus avoiding damage to the hull base material; (2) The hoist is only required for lifting onto the corresponding tooling, which greatly reduces the use of hoists for lifting, reduces the input of personnel, and reduces the labor intensity of personnel; (3) Since there is no need to use a large number of hoists to pull and align, it avoids bumps on various parts of the hull and avoids construction safety problems that may occur during shaking and swinging; (4) The use of new installation devices and their cooperation with each other reduces the difficulty of adjusting the installation position and improves the installation accuracy and efficiency.

[0033] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. The installation device of the shaft rudder system of a large ship is characterized by: include: A track, and a tail shaft installation tool that can move along the length direction of the track; the tail shaft installation tool includes a V-shaped bracket, and the V-shaped bracket can move on the tail shaft installation tool along the height and width directions of the track; Blade installation tooling; the blade installation tooling includes a first axis vehicle or a first flatbed vehicle, and a blade support tooling installed thereon; Rudder blade installation tooling; the rudder blade installation tooling includes a second axis vehicle or a second flatbed vehicle, and a rudder blade supporting tooling installed thereon.

2. The installation device for the shaft and rudder system of a large ship according to claim 1 is characterized in that: The blade supporting tooling comprises a first chassis and a fixing frame arranged on the first chassis, a saddle is arranged on the fixing frame, and the saddle is used to support the propeller hub.

3. The installation device for the shaft and rudder system of a large ship according to claim 2, characterized in that: A crossbeam is arranged between the saddle and the fixing frame.

4. The installation device for the shaft and rudder system of a large ship according to claim 2, characterized in that: The saddle comprises an arc-shaped panel, a web and a bottom plate which are connected in sequence. At least three partitions are arranged between the arc-shaped panel and the bottom plate. The partitions are perpendicular to the web and the bottom plate.

5. The installation device for the shaft and rudder system of a large ship according to claim 1, characterized in that: The rudder blade supporting tooling comprises a second chassis, and a main supporting frame and a bow supporting frame arranged on the second chassis; The main support frame is provided with a locking device, and the locking device is used to fix the rudder blade on the main support frame; The bow support frame is used for supporting the rudder ball.

6. The installation device for the shaft and rudder system of a large ship according to claim 5, characterized in that: The locking device comprises a sleeve connected to the main support frame, and an inner tube threadedly connected to the sleeve; sealing plates are provided at both ends of the inner tube.

7. The installation device for the shaft and rudder system of a large ship according to claim 5, characterized in that: A height adjustment device is provided on the top of the bow support frame, and a support plate is provided on the top of the height adjustment device. The support plate is used to support the rudder ball.

8. The installation method of the shaft rudder system of a large ship is characterized by: The method is carried out using the installation device according to any one of claims 1 to 6, comprising the following steps: S1, stern shaft installation: S1.

1. Install the track according to the longitudinal centerline of the stern shaft installation and install at least two stern shaft installation tools on the track; S1.

2. Place the stern shaft with a dummy shaft installed at the stern end on the V-shaped bracket on the tail shaft installation tooling; S1.

3. Driven by the tail shaft installation tool, the stern shaft with the dummy shaft installed moves toward the stern; S1.

4. When the end of the dummy shaft extends out of the stern hub, hold the dummy shaft to maintain overall balance and continue to push the tail shaft installation tooling until the stern shaft reaches the installation position; S1.

5. Achieve precise positioning by adjusting the tail shaft installation tooling, and then complete the stern shaft installation; S2. Blade installation: Place the blade on the blade support fixture, and use the first axis vehicle or the first flatbed vehicle to transport the blade to the bottom of the installation position; then use the first axis vehicle or the first flatbed vehicle to lift and adjust the blade into place, and then complete the blade installation; S3, rudder blade installation: place the rudder blade on the rudder blade supporting tooling, use the second axis vehicle or the second flatbed vehicle to transport the rudder blade to the installation position; then use the second axis vehicle or the second flatbed vehicle to lift and adjust the rudder blade into place, and then complete the rudder blade installation.

9. The installation method of a large ship shaft rudder system according to claim 8, characterized in that: The dummy shaft comprises a round tube, and an ear plate is arranged at one end of the round tube.

10. The installation method of a large ship shaft rudder system according to claim 8, characterized in that: S1.1 also includes the step of installing a platform, wherein a platform support rod is provided under the platform, and the platform support rod is used to adjust the levelness of the platform.

Images