A tooling for installing a ship propeller

Abstract

This application provides a propeller installation fixture, comprising: a base support; a rotating mechanism mounted on the base support and rotatable on the base support; a loading bracket including a front propeller bracket and a rear propeller bracket positioned opposite each other above the rotating mechanism, the front propeller bracket and the rear propeller bracket being able to generate relative displacement in a first direction above the rotating mechanism via a guide mechanism, with the propeller mounted between the two loading brackets; a lifting mechanism respectively mounted on the front propeller bracket and the rear propeller bracket, used to drive the propeller to move in a third direction; and a longitudinal movement mechanism respectively mounted on top of the lifting mechanism, used to drive the propeller to move in a second direction. This propeller installation fixture can replace existing rail transport methods, enabling multi-angle and multi-directional transport within confined installation spaces, reducing rail laying construction, and is suitable for clamping propellers of different models and sizes. It is stable, anti-tipping, easy to adjust, and has wider applicability.

Description

Technical Field

[0001] This application belongs to the field of marine technology, and in particular relates to an installation fixture for a ship propeller. Background Technology

[0002] A propeller consists of a hub and several blades radially fixed to the hub. In the shipbuilding industry, the market demand for large ships is increasing, and the propellers required for them are correspondingly larger in size and weight, with a net weight of up to hundreds of tons and a diameter of more than ten meters. Before a ship is launched, the propeller needs to be installed. During the installation process, considering the propeller's own weight and its irregular shape, propeller installation fixtures are needed to assist in the installation work.

[0003] The following problems exist in the actual installation of the propeller: First, the stern installation platform is limited by the track, and the direction of travel is singular. When changing direction during installation, the track must be re-laid, and the changing device must be pulled manually. The entire track changing process is very cumbersome and greatly affects the construction progress. Second, the stern installation platform occupies a large area and is easily affected by the on-site installation environment, which may prevent the tooling from traveling to the designated position and transporting the propeller to the location, greatly reducing its applicability. Finally, each transition point in the installation process requires workers to direct and coordinate pushing and pulling, which is both physically and time-consuming, resulting in extremely low installation efficiency.

[0004] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, the purpose of this application is to provide an installation fixture for ship propellers to solve the problems of difficult propeller installation and reversal, long time consumption and high labor costs in the prior art.

[0006] To achieve the above and other related objectives, this application provides an installation fixture for a ship propeller, the installation fixture comprising:

[0007] Basic support;

[0008] A rotating mechanism is mounted on the foundation support and can rotate on the foundation support;

[0009] The loading bracket includes a front paddle bracket and a rear paddle bracket disposed opposite to each other above the rotating mechanism. The front paddle bracket and the rear paddle bracket are capable of relative displacement in a first direction above the rotating mechanism via a guide mechanism. A propeller is mounted between the two loading brackets.

[0010] The lifting mechanism is respectively installed on the front propeller bracket and the rear propeller bracket, and is used to drive the propeller to move in a third direction;

[0011] The longitudinal movement mechanism is respectively disposed on the top of the lifting mechanism and is used to drive the propeller to move along the second direction.

[0012] In one embodiment, the rotating mechanism includes:

[0013] A slewing bearing is mounted on the base support via an inner ring support, and an external gear is provided on the outer side of the inner ring support.

[0014] The turntable is mounted on the foundation support via a slewing bearing.

[0015] A rotary drive is located on the outer edge of the turntable, and the rotary drive drives the turntable to rotate through an external meshing spur gear transmission method.

[0016] In one embodiment, the paddle front bracket includes: a bracket front base slidably connected to the turntable, a bracket front support provided on the bracket front base, and an operation front platform provided on both sides of the bracket front support;

[0017] The rear propeller bracket has the same structure as the front propeller bracket and is arranged opposite to it, including: a rear bracket base, a rear bracket support, and an operating platform;

[0018] The front support and the rear support of the bracket are used to mount the propeller.

[0019] In one embodiment, the front support of the bracket is rotatably connected to the front base of the bracket via a central shaft; the front bracket of the paddle is provided with a flipping mechanism for controlling the flipping stroke of the front support of the bracket on the front base of the bracket.

[0020] In one embodiment, a bracket pin is provided on the front support of the bracket, which can lock and fix the front support of the bracket to the front base of the bracket.

[0021] In one embodiment, the flipping mechanism includes: a rotating connecting plate movably connected to the central shaft, one free end of the rotating connecting plate being movably connected to the front support of the bracket, and the other free end of the rotating connecting plate being movably connected to the front base of the bracket via a connecting arm, the connecting arm being driven to reciprocate by a third hydraulic cylinder disposed on the front base of the bracket.

[0022] In one embodiment, the lifting mechanism includes:

[0023] The second hydraulic cylinder is located in the middle of each loading bracket and is used to drive the lifting mechanism to move up and down. The top of the second hydraulic cylinder is connected to the longitudinal movement mechanism.

[0024] Guide rods are symmetrically arranged on both sides of the second hydraulic cylinder to provide guidance for the vertical movement of the lifting mechanism. The top of the guide rods is connected to the longitudinal movement mechanism.

[0025] A locking nut is provided on the upper part of each of the guide rods and located between the longitudinal movement mechanism and the loading bracket, for limiting the guide rod.

[0026] In one embodiment, the longitudinal movement mechanism further includes:

[0027] A hub support plate, which can be driven by a longitudinal movement mechanism to reciprocate along a second direction;

[0028] The pads are symmetrically arranged in a "V" shape on the top of the propeller hub support plate.

[0029] In one embodiment, the foundation support includes:

[0030] The bottom frame is used to mount the rotating mechanism;

[0031] The first bolts are respectively arranged on the outer frame of the bottom frame to fix the bottom frame;

[0032] The first lifting lugs are respectively arranged on the outer frame of the bottom frame for the overall movement of the tooling.

[0033] In one embodiment, the front propeller bracket and the rear propeller bracket are connected by a bracket safety screw, which provides a limiting function for the relative displacement of the front propeller bracket and the rear propeller bracket.

[0034] Compared with the prior art, the technical solution provided in this application has the following beneficial effects:

[0035] 1. The propeller installation fixture of this application can replace the existing rail transportation method. The fixture is fixed on the auxiliary installation vehicle, which can realize multi-angle and multi-directional transportation, reduce the construction of rail laying, and eliminate the need for manual pulling and reversing during installation. The rotating mechanism can realize the propeller's rotation in place, which makes it easy to adjust the angle of the propeller shaft to align with the installation position. The lifting mechanism can adjust the propeller to the installation height, and the longitudinal movement mechanism can further fine-tune the distance between the propeller and the actual installation position, so as to ensure smooth installation and smooth retraction.

[0036] 2. The propeller mounting fixture of this application has a front bracket and a rear bracket that can move relative to each other, making it suitable for clamping propellers of different models and sizes. It is stable, anti-tilting, easy to adjust, and has wider applicability.

[0037] 3. The propeller installation fixture of this application is equipped with a tilting mechanism on the propeller front bracket. After the propeller is installed, in order to avoid the propeller front bracket from colliding and damaging the installed propeller blades, the tilting mechanism can drive the propeller front bracket to tilt down, and the fixture can be directly withdrawn without turning or moving laterally. It is especially suitable for narrow installation spaces, protecting the propeller and optimizing the installation process. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the installation fixture for this application;

[0039] Figure 2 This is a schematic diagram showing the installation of the tooling and propeller in this application.

[0040] Figure 3 for Figure 2 A partially enlarged schematic diagram of the transmission mechanism;

[0041] Figure 4 This is a schematic diagram of the propeller front support and the tilting mechanism.

[0042] Figure 5 for Figure 4 A partially enlarged schematic diagram of the longitudinal displacement mechanism;

[0043] Figure 6 This is a schematic diagram of the turntable at one angle in this application;

[0044] Figure 7 This is a schematic diagram of the turntable from another angle in this application;

[0045] Figure 8 This is a schematic diagram showing the rotation state of the propeller front bracket when the installation tooling is retracted.

[0046] Explanation of reference numerals in the attached figures:

[0047] 1. Foundation support;

[0048] 101. Bottom frame; 102. First bolt; 103. First lifting lug;

[0049] 2. Rotating mechanism;

[0050] 201. Turntable; 202. Rotary drive; 203. Rotary bearing; 206. Bearing guard plate; 207. Reinforcing rib plate; 208. Inspection hole;

[0051] 3. Guiding mechanism;

[0052] 301. Guide rail base; 302. Slider;

[0053] 4. Paddle support bracket;

[0054] 401. Front base of bracket; 402. Front support of bracket; 403. Front operating platform; 404. Bracket pin;

[0055] 5. Paddle support bracket;

[0056] 501. Rear base of bracket; 502. Rear support of bracket; 503. Rear operating platform; 504. Crane boom;

[0057] 6. Lifting mechanism;

[0058] 601. Second hydraulic cylinder; 602. Guide rod; 603. Locking nut;

[0059] 7. Longitudinal movement mechanism;

[0060] 701. Hub plate; 702. Pad plate;

[0061] 8. Tilting mechanism;

[0062] 801. Third hydraulic cylinder; 802. Connecting arm; 803. Rotating connecting plate; 804. Central shaft;

[0063] 9. Bracket safety screw;

[0064] 10. Cover. Detailed Implementation

[0065] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and principles of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application.

[0066] It should be noted that you should refer to [link / reference]. Figures 1 to 8 The illustrations provided in this embodiment are only schematic representations of the basic concept of this application. The drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0067] For ease of description, the coordinate system is defined as follows: Figure 1 As shown, the x-axis is defined as the first direction; the y-axis is defined as the second direction; and the z-axis is defined as the third direction.

[0068] This application discloses an installation fixture for a ship propeller, see [link to relevant documentation]. Figure 1 The installation fixtures include:

[0069] The base support 1 is used to fix the tooling to other installation bases and to load the rotating mechanism 2, guiding mechanism 3, front propeller bracket 4, rear propeller bracket 5, lifting mechanism 6 and longitudinal movement mechanism 7 set above it.

[0070] Rotating mechanism 2 is mounted on the base support 1 and can rotate around its center in the xy plane on the base support 1 to adjust the installation direction of the propeller.

[0071] The loading bracket includes a front propeller bracket 4 and a rear propeller bracket 5 positioned opposite each other above the rotating mechanism 2. A propeller is mounted between the two loading brackets. The front propeller bracket 4 and the rear propeller bracket 5 can generate relative displacement above the rotating mechanism 2 in a first direction, i.e., the x-axis, via a guide mechanism 3. By changing the distance between the front propeller bracket 4 and the rear propeller bracket 5, propellers of different sizes and specifications can be loaded, making the propeller more stably mounted between the two brackets and improving the adaptability of the tooling. In addition, the front propeller bracket 4 and the rear propeller bracket 5 can also be adjusted synchronously in the same direction to precisely position and fine-tune the x-axis position of the propeller installation, ensuring installation accuracy.

[0072] The lifting mechanism 6 is respectively installed on the front propeller bracket 4 and the rear propeller bracket 5, and is used to drive the propeller to move along the third direction, that is, to drive the propeller to move up and down along the z direction, and to transport the propeller to the appropriate installation height.

[0073] The longitudinal movement mechanism 7 is located on the top of the lifting mechanism 6 and is used to drive the propeller to move horizontally in the second direction, i.e., the y-direction. It cooperates with the lifting mechanism 6, the loading bracket, and the rotating mechanism 2 to align the propeller shaft with the mounting hole and complete the installation work.

[0074] In one implementation, see Figure 1 , 6 7. The rotating mechanism 2 includes:

[0075] A slewing bearing 203 is installed at the bottom of the turntable 201. The slewing bearing 203 is installed on the base support 1 through an inner ring support. An external gear is provided on the outer side of the inner ring support.

[0076] Turntable 201 is movably mounted on foundation support 1 via rotary bearing 203;

[0077] The rotary drive 202 is located on the outer edge of the turntable 201 and includes a rotary drive motor. The bottom of the rotary drive motor is connected to a first gear. The first gear and the external gear drive the turntable 201 to rotate by means of external meshing spur gear transmission.

[0078] Specifically, a bearing guard plate 206 is provided around the first gear and the external gear. The bearing guard plate 206 is vertically installed at the bottom of the turntable 201, providing physical protection for the first gear and the external gear and preventing foreign objects from entering the transmission mechanism and damaging the gears. A reinforcing rib plate 207 is also provided at the connection between the bearing guard plate 206 and the turntable 201. The reinforcing rib plate 207 can support the bearing guard plate 206 and further improve the structural strength of the rotating mechanism 2, making it more load-bearing and more stable and reliable when mounting large-sized propellers. Inspection holes 208 can also be opened on the turntable 201. The number of inspection holes 208 is determined according to the diameter of the turntable 201. Usually, the inspection holes 208 are located directly below the propeller front bracket 4 and the propeller rear bracket 5, symmetrically arranged on the diameter of the turntable 201, which facilitates the observation of the operation of the propeller front bracket 4, the propeller rear bracket 5 and their bottom guide mechanism 3, and facilitates maintenance personnel's inspection and operation.

[0079] In one embodiment, the difference from the above technical solution is that, see [reference needed]. Figure 1 , 2 4. The propeller front bracket 4 specifically includes: a bracket front base 401 slidably connected to the turntable 201, a bracket front support 402 provided on the bracket front base 401, and an operating front platform 403 provided on both sides of the bracket front support 402; the propeller rear bracket 5 has the same structure as the propeller front bracket 4 and is arranged opposite to it, including: a bracket rear base 501, a bracket rear support 502 and an operating rear platform 503; the bracket front support 402 and the bracket rear support 502 are used to support the propeller.

[0080] See Figure 4 Taking the propeller front bracket 4 as an example of a loading bracket, the structure of the propeller rear bracket 5 is the same and will not be described in detail. The propeller front bracket 4 includes a bracket front base 401 that is slidably connected to the turntable 201. The bracket front base 401 includes two base beams arranged in parallel and a connecting longitudinal beam connecting the base beams. The bottom of the two base beams is set on the turntable 201 through a guide mechanism 3. A bracket front support 402 is set on the bracket front base 401. The bracket front support 402 includes a support frame that is vertically arranged in the yz plane. The internal area of ​​the support frame is provided with a reinforcing support square tube along the z direction. The reinforcing support square tube serves two purposes: first, to ensure the support strength of the bracket front support 402, and second, to accommodate the guide rod 602 and provide protection for the reciprocating movement of the guide rod 602. Operating platforms 403 are provided on both sides of the front support 402 of the bracket. The operating platforms 403 include bracket steps, paddle bracket railings and paddle bracket ladders. They are installed on the outside of the front support 402 of the bracket to provide an operating platform for the paddle loading workers, which facilitates manual operation and subsequent maintenance.

[0081] Specifically, the guide mechanism 3 includes two parts: multiple guide rail bases 301 disposed on the top surface of the turntable 201, and sliders 302 disposed on the front base 401 and the rear base 501 of the bracket and cooperating with the guide rail bases 301.

[0082] The top surface of the turntable 201 is also provided with a cover 10 to protect the front base 401 of the bracket, the rear base 501 of the bracket, and the related drive mechanism at the bottom of the two.

[0083] In one embodiment, the difference from the above technical solution is that, see [reference needed]. Figure 2 , 3 4. The front support 402 of the bracket is rotatably connected to the front base 401 of the bracket via a central shaft 804, while the rear support 502 of the bracket does not need to be rotatably connected to the rear base 501 of the bracket. To ensure the overall strength of the loading bracket, it is necessary to minimize the number of movable connection structures. However, it should be understood that if the rear bracket 5 of the paddle is also set as a rotatable connection structure, so that the loading bracket can be flipped in both directions, the practicality of the tooling of this application will be improved. A flipping mechanism 8 is provided on the front bracket 4 of the paddle to control the flipping stroke of the front support 402 of the bracket on the front base 401 of the bracket.

[0084] Specifically, see Figure 4 The front support 402 of the bracket also includes a crossbeam with a bracket pin 404 on it. The bracket pin 404 can lock the front support 402 of the bracket to the front base 401 of the bracket to prevent the front support 402 of the bracket from tipping over.

[0085] In one embodiment, the difference from the above technical solution is that, see [reference needed]. Figure 3 , 4 The flipping mechanism 8 specifically includes: a rotating connecting plate 803 movably connected to the central shaft 804; one free end of the rotating connecting plate 803 is movably connected to the front support 402 of the bracket; the other free end of the rotating connecting plate 803 is movably connected to the front base 401 of the bracket via a connecting arm 802; and the connecting arm 802 is driven to reciprocate by a third hydraulic cylinder 801 disposed on the front base 401 of the bracket.

[0086] The flipping mechanism of the front support 402 of the bracket is as follows: See Figure 8 First, remove the bracket pin 404. The third cylinder 801 drives the connecting arm 802 forward, pushing the rotating connecting plate 803 to rotate around the axis. To save space, the rotating connecting plate 803 is set to use a shorter lever arm to drive a longer lever arm to rotate. In this application, when the front support 402 of the bracket is rotated, the propeller has been removed from the fixture and installed. Therefore, the front support 402 of the bracket is in an unloaded state. Thus, the third cylinder 801 has sufficient driving force to realize its rotation process. When the highest point of the propeller front bracket 4 is lower than the lowest point of the propeller, the retraction of the fixture will not cause stroke interference and damage to the propeller blade.

[0087] In one implementation, see Figure 4 , 5 The lifting mechanism 6 specifically includes:

[0088] The second hydraulic cylinder 601 is located in the middle of each loading bracket and is used to drive the lifting mechanism 6 to move up and down. The top of the second hydraulic cylinder 601 is connected to the longitudinal movement mechanism 7.

[0089] Guide rods 602 are symmetrically arranged on both sides of the second oil cylinder 601 and are located inside the reinforced support square tube arranged along the z direction inside the support frame. Guide rods 602 provide guidance for the up and down movement of the lifting mechanism 6. The top of the guide rods 602 is connected to the longitudinal movement mechanism 7.

[0090] A locking nut 603 is provided on the upper part of each guide rod 602 and located between the longitudinal movement mechanism 7 and the loading bracket, for limiting the guide rod 602.

[0091] In one implementation, see Figure 5 The longitudinal movement mechanism 7 is a guide structure of a guide rail slide that can move along the y-direction. The longitudinal movement mechanism 7 also includes:

[0092] The hub support plate 701 is driven by the longitudinal movement mechanism 7 to reciprocate along the second direction, i.e., the y-direction, to align the propeller shaft with the mounting hole and insert it. The top of the hub support plate 701 is concave in the middle and inclined upward on both sides, forming a "V" shaped symmetrical structure. The two inclined plates are respectively provided with pads 702 to increase the force-bearing area of ​​the propeller shaft. The pads 702 can be made of a metal with low hardness, such as aluminum plate, to prevent the hub support plate 701 from scratching the propeller shaft.

[0093] In some embodiments, the propeller support 5 further includes a boom 504, which is configured for the installation of the propeller nut.

[0094] In some embodiments, the foundation support 1 includes:

[0095] The bottom frame 101 is used to mount the rotating mechanism 2;

[0096] The first bolts 102 are respectively arranged on the outer frame of the bottom frame 101 to fix the bottom frame 101.

[0097] The first lifting lug 103 is arranged on the outer frame of the bottom frame 101 and is used for the overall movement of the tooling.

[0098] As a specific example, two of the most common types of propeller mounting base supports 1 are provided. The first type of base support 1 has a bottom frame 101 with dimensions of 5m*5m*3.8m and an overall weight of 60t. The second type of base support 1 has a bottom frame 101 with dimensions of 7m*7m*5.3m and an overall weight of 86t. The longer side of the bottom frame 101 is equipped with 3-5 first bolts 102, and the first lifting lugs 103 are distributed at intervals with the first bolts 102. The entire frame is provided with at least 4 first lifting lugs for the overall movement and installation of the tooling. The frame of the base support 1 is equipped with an electrical control system that can drive or control the tooling, or an electronic control panel is provided. The hydraulic system is controlled by remote control signals to drive the tooling to make corresponding movements and complete the propeller installation process.

[0099] In some embodiments, the front propeller bracket 4 and the rear propeller bracket 5 are connected by a bracket safety screw 9, which specifically connects the front bracket base 401 and the rear bracket base 501, and can provide a limiting function for the relative displacement of the front propeller bracket 4 and the rear propeller bracket 5.

[0100] The method of using the installation tooling in this application is as follows:

[0101] S1: Select the installation fixture corresponding to the propeller model;

[0102] S2: Hoist and secure the installation fixtures to the module vehicle;

[0103] S3: Lift and suspend the propeller. The modular vehicle moves to below the propeller. Adjust the loading angle of the installation fixture until the line connecting the two loading brackets of the installation fixture is on the same vertical plane as the center line of the lifted propeller hub. Adjust the opening distance of the two loading brackets of the auxiliary fixture to match the length of the propeller hub. Lower the propeller onto the two loading brackets and remove the lifting device.

[0104] S4: Adjust the loading angle of the installation fixture and rotate the propeller disk to be in the same direction as the installation fixture in the length direction;

[0105] S5: The modular vehicle, equipped with a propeller, travels to the stern of the ship. The centerline of the modular vehicle and the centerline of the shaft system are on the same vertical plane. During the journey, the loading angle of the installation fixture is adjusted so that the propeller blades avoid the rudder arm. Finally, the propeller blades are turned 90 degrees so that the propeller shaft and the centerline of the shaft system are on the same vertical plane.

[0106] S6: Adjust the height of each loading bracket to tilt the propeller, and at the same time adjust the horizontal direction of the mounting fixture so that the propeller shaft coincides with the extension line of the shaft system centerline;

[0107] S7: Synchronously drive the two loading brackets to move forward, and install the propeller in place;

[0108] S8: Adjust the height of the two loading brackets so that they are detached from the propeller hub. The highest point of the two loading brackets is lower than the lowest point of the stern shaft bracket. The loading bracket closer to the stern shaft bracket is flipped to the side of the ship until it is lower than the lowest point of the propeller blade. The modular vehicle moves backward and takes away the auxiliary tooling from the installation area.

[0109] In summary, this application provides an installation fixture for a ship propeller, which can replace the existing propeller rail transportation method. The fixture is fixed on an auxiliary installation vehicle to achieve multi-angle and multi-directional transportation, reducing rail laying construction. No manual pulling or reversing is required during installation. The rotating mechanism of the fixture enables the propeller to rotate in place, facilitating the adjustment of the propeller shaft angle to align with the installation position. The lifting mechanism can adjust the propeller to the installation height, and the longitudinal movement mechanism can further fine-tune the distance between the propeller and the actual installation position, ensuring smooth installation and retraction. The propeller installation fixture's front and rear brackets can move relative to each other, suitable for clamping propellers of different models and sizes, providing stability, preventing tilting, and easy adjustment, thus broadening its applicability. The propeller installation fixture is equipped with a tilting mechanism on the front bracket. After propeller installation, to prevent the front bracket from colliding and damaging the installed propeller blades, the tilting mechanism can drive the front bracket to tilt, allowing the fixture to be directly withdrawn without turning or lateral movement. This is particularly suitable for confined installation spaces, protecting the propeller while optimizing the installation process. Therefore, this application effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0110] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. A tooling for installing a ship propeller, characterized in that, The installation fixture includes: Basic support (1); A rotating mechanism (2) is mounted on the foundation support (1) and can rotate on the foundation support (1); The loading bracket includes a front paddle bracket (4) and a rear paddle bracket (5) disposed opposite to each other above the rotating mechanism (2). The front paddle bracket (4) and the rear paddle bracket (5) can generate relative displacement in a first direction above the rotating mechanism (2) via a guide mechanism (3). A propeller is mounted between the two loading brackets. The lifting mechanism (6) is respectively installed on the front propeller bracket (4) and the rear propeller bracket (5) and is used to drive the propeller to move in a third direction; The longitudinal movement mechanism (7) is respectively disposed on the top of the lifting mechanism (6) and is used to drive the propeller to move along the second direction; The paddle front bracket (4) includes a front bracket base (401) and a front bracket support (402) disposed on the front bracket base (401). A flipping mechanism (8) is provided at the connection between the front bracket base (401) and the front bracket support (402) to control the flipping stroke of the front bracket support (402) relative to the front bracket base (401).

2. The installation fixture for a ship propeller according to claim 1, characterized in that, The rotating mechanism (2) includes: A slewing bearing (203) is mounted on the base support (1) via an inner ring support, and an external gear is provided on the outer side of the inner ring support; The turntable (201) is mounted on the foundation support (1) via a slewing bearing (203); A rotary drive (202) is disposed on the outer edge of the turntable (201), and the rotary drive (202) drives the turntable (201) to rotate through an external meshing spur gear transmission method.

3. The installation fixture for a ship propeller according to claim 2, characterized in that, The paddle front bracket (4) includes: a bracket front base (401) slidably connected to the turntable (201), a bracket front support (402) is provided on the bracket front base (401), and an operation front platform (403) is provided on both sides of the bracket front support (402). The rear propeller bracket (5) has the same structure as the front propeller bracket 4 and is arranged opposite to it, including: rear bracket base (501), rear bracket support (502) and rear operating platform (503); The front support (402) and the rear support (502) of the bracket are used to support the propeller.

4. The installation fixture for a ship propeller according to claim 3, characterized in that, The front support (402) of the bracket is rotatably connected to the front base (401) of the bracket via a central shaft (804); a flipping mechanism (8) is provided on the front bracket (4) of the paddle, which is used to control the flipping stroke of the front support (402) on the front base (401) of the bracket.

5. The installation fixture for a ship propeller according to claim 4, characterized in that, The bracket front support (402) is provided with a bracket pin (404), which can lock and fix the bracket front support (402) and the bracket front base (401).

6. The installation fixture for a ship propeller according to claim 5, characterized in that, The flipping mechanism (8) includes: a rotating connecting plate (803) movably connected to the central shaft (804), one free end of the rotating connecting plate (803) being movably connected to the front support (402) of the bracket, and the other free end of the rotating connecting plate (803) being movably connected to the front base (401) of the bracket via a connecting arm (802), the connecting arm (802) being driven to reciprocate by a third hydraulic cylinder (801) provided on the front base (401) of the bracket.

7. The installation fixture for a ship propeller according to claim 1, characterized in that, The lifting mechanism (6) includes: The second hydraulic cylinder (601) is located in the middle of each of the loading brackets and is used to drive the lifting mechanism (6) to move up and down. The top of the second hydraulic cylinder (601) is connected to the longitudinal movement mechanism (7). Guide rods (602) are symmetrically arranged on both sides of the second oil cylinder (601) to provide guidance for the up and down movement of the lifting mechanism (6). The top of the guide rods (602) is connected to the longitudinal movement mechanism (7). A locking nut (603) is provided on the upper part of each of the guide rods (602) and located between the longitudinal movement mechanism (7) and the loading bracket for limiting the guide rods (602).

8. The installation fixture for a ship propeller according to claim 1, characterized in that, The longitudinal movement mechanism (7) also includes: The hub support plate (701) is capable of reciprocating along the second direction by the longitudinal movement mechanism (7); The pads (702) are symmetrically arranged in a "V" shape on the top of the propeller hub support plate (701).

9. The installation fixture for a ship propeller according to any one of claims 1-8, characterized in that, The foundation support (1) includes: Bottom frame (101) for mounting the rotating mechanism (2); The first bolt (102) is arranged on the outer frame of the bottom frame (101) to fix the bottom frame (101); The first lifting lug (103) is arranged on the outer frame of the bottom frame (101) for the overall movement of the tooling.

10. The installation fixture for a ship propeller according to any one of claims 1-8, characterized in that, The front propeller bracket (4) and the rear propeller bracket (5) are connected by a bracket safety screw (9), which provides a limiting function for the relative displacement of the front propeller bracket (4) and the rear propeller bracket (5).

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