Assembly tool and method for rudder blade and rudderstock of ship

Abstract

The invention provides an assembly tool and an assembly method for a rudder blade and a rudderstock of a ship. The assembly tool is mainly composed of a supporting frame, a lifting platform and a flat transport vehicle. The supporting frame comprises two frame bodies which are in bilateral symmetry, an operation gap used for placing the lifting platform is formed between the two frame bodies, the lifting platform is used for placing the rudder blade, a plurality of supporting rods are installed on side panels, close to each other, of the two frame bodies, and the supporting rods are evenly distributed and abut against the surface of the rudder blade, so that the rudder blade is supported and fixed. The supporting rod is installed on the side panel through a supporting rod base fixed to the side panel, and the rudder blade can move in the front-back direction and the left-right direction by adjusting the position of the supporting rod in the supporting rod base so that the rudder blade can be aligned with a rudder stock above the rudder blade. And meanwhile, the front-back position of the rudder blade can be further adjusted through the lifting platform, finally, the peripheral gap of the rudderstock in the rudder hole is made to be uniform, and finally precise assembly is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of shipbuilding, and in particular to an assembly tool and an assembly method for a ship rudder blade and a rudder stock. Background Art

[0002] During the shipbuilding process, the time on the slipway is relatively precious. In the prior art, the ship's rudder blades are installed after the entire ship is closed. After the entire ship is closed, it cannot be installed smoothly due to the obstruction of the hull and the limitations of the installation environment. It is necessary to weld a hoist on the outer plate of the hull to assist in the installation of the rudder blades. In the past, the installation of rudder blades relied on the cooperation of a crane and a hoist, and it was necessary to burn a hoist on the hull to install the hoist. In the process of installation, it is necessary to constantly rely on human judgment to adjust the tightness of the hoist to adjust the position of the rudder hole to avoid collision and make it smoothly dock with the rudder shaft. When installing the rudder blade, a large number of personnel are required to cooperate, and the position of the rudder blade needs to be adjusted repeatedly. During the installation process, the rudder blade is suspended for a long time and relies on the hoist to stretch and fix it. There is a risk of capsizing or falling, and work injuries are prone to occur. It is time-consuming and labor-intensive, with low precision and low efficiency.

[0003] like Figure 1 As shown, the common positioning and installation methods of rudder blades are as follows:

[0004] ① After the whole ship is closed, start preparing to install the rudder blade and rudder stock;

[0005] ② Weld the lifting horse on the hull outer plate and the corresponding position of the rudder blade. Hang the hoist on the hull lifting horse to adjust the position of the rudder blade during installation so that it can be smoothly connected with the rudder stock;

[0006] ③ Lift the rudder blade under the hull. Before installing the rudder blade, distinguish the front and back, left and right according to the markings provided by the equipment manufacturer to prevent lifting incorrectly.

[0007] ④Hang the other end of the prepared hoist on the lifting horse above the rudder blade, tighten the hoist, and rely on the upward pulling force of the hoist to make the rudder blade move closer to the rudder stock above the hull;

[0008] ⑤ Take two measures at the same time during the hoisting process: monitor the position of the rudder blade in the hoisting process in real time to ensure smooth docking with the rudder stock; adjust the position of the rudder blade by adjusting the tightness of the corresponding hoist through human judgment or experience to ensure smooth insertion of the rudder stock into the rudder hole; maintain the same gap around the rudder hole to prevent the rudder stock from getting stuck or scratched;

[0009] ⑥ After the rudder stock is successfully inserted into the rudder hole and installed in place, tighten the bolts at the bottom of the rudder stock, remove the hoist, and cut off the hanging horse.

[0010] In summary, the original rudder blade installation method has many disadvantages during installation: low precision, the hoisting welding causes irreversible damage to the hull, a large number of people are required, the labor efficiency is low, the suspension time is long, and the risk factor is high. Summary of the invention

[0011] In view of the many shortcomings of the original rudder blade installation mentioned above, the purpose of this patent is to provide a tooling and method that can quickly and accurately position, safely and reliably, and can solve all the installation shortcomings of the above-mentioned original installation method; in view of the rudder blade's own shape, weight center of gravity, and the particularity of its installation position being subject to more constraints from the surrounding environment, which brings about the convenience of installation, a tooling that can automatically, quickly and accurately position and install is proposed to solve all the above-mentioned technical defects, thereby improving construction quality and efficiency, reducing construction difficulty, increasing construction safety factor, avoiding structural damage, and reducing safety risks.

[0012] To achieve the above-mentioned purpose and other related purposes, the present invention provides an assembly tool for a ship rudder blade and a rudder stock, the assembly tool comprising a support frame, the support frame comprising two left-right symmetrical frames, a working gap formed between the two frames, the working gap is used to park a lifting platform, the lifting platform is used to place the rudder blade, the side panels of the two frames close to each other are both installed with a plurality of support rods, the plurality of support rods are evenly distributed and pressed against the surface of the rudder blade, so as to support and fix the rudder blade;

[0013] The support rod is installed on the side panel through a support rod base fixed on the side panel, and the support rod passes through the support rod base. By adjusting the position of the support rod in the support rod base, the movement of the rudder blade in the front and rear directions and the left and right directions can be achieved, so that the rudder hole on the upper part of the rudder blade is aligned with the rudder stock above.

[0014] Optionally, the lifting platform includes cross-connected lifting links and a horizontal surface connected to the upper ends of the lifting links, the lifting links are parallel to the side panels, and the lifting links change their crossing angles through hydraulic cylinders, thereby changing the height of the horizontal surface.

[0015] Optionally, the horizontal surface is provided with a screw arranged along the front and rear direction, the screw is threadedly connected to the slider, a turntable is fixed above the slider, and the turntable is used to place the rudder blade; the turntable itself can rotate around the axis, and rotating the screw can realize the forward and backward movement of the turntable to adjust the front and rear position of the rudder blade and the rotation angle relative to the rudder bar; the end of the screw is equipped with a hydraulic motor to drive the rotation of the screw.

[0016] Optionally, it further includes a hydraulic control module, which includes an oil pump, a hydraulic oil tank, and a power control box;

[0017] The first solenoid valve is installed on the first oil inlet pipeline of the hydraulic motor, and the second solenoid valve is installed on the second oil inlet pipeline of the hydraulic motor. Different oil inlet pipelines are used to drive the internal rotor of the hydraulic motor to rotate in different directions, thereby realizing forward and reverse rotation. The return oil port of the hydraulic motor is connected to the return oil main pipe; the third solenoid valve is installed on the oil inlet pipeline of the hydraulic cylinder, and the fourth solenoid valve is installed on the oil outlet pipeline of the hydraulic cylinder, and the oil outlet pipeline is connected to the return oil main pipe; the oil inlet pipeline is connected to the hydraulic oil main pipe, and the return oil pipeline returns the hydraulic oil to the hydraulic oil tank.

[0018] Optionally, the control circuit of the first solenoid valve is connected to the motor forward button of the power control box, and the control circuit of the second solenoid valve is connected to the motor reverse button of the power control box; the control circuit of the third solenoid valve is connected to the cylinder lifting button of the power control box, and the control circuit of the fourth solenoid valve is connected to the cylinder lowering button of the power control box; the control circuit of the oil pump is connected to the oil pump start and stop button of the power control box; the power control box is connected to the external circuit.

[0019] Optionally, the hydraulic oil tank is provided with a refueling port, a vent, and an observation liquid level gauge.

[0020] Optionally, a flatbed transport vehicle is also included, and the flatbed transport vehicle is used to carry the support frame and the lifting platform.

[0021] Optionally, a single side panel is fixed with two rows and two columns of four support rods, and the support rods are not perpendicular to the side panel.

[0022] Optionally, an upper platform and a lower platform are provided in the frame, the upper platform is horizontally arranged above the upper support rod, and the lower platform is arranged below the lower support rod.

[0023] The present invention also provides an assembly method of the assembly tool, comprising the following steps:

[0024] S1: Assemble the support frame into place, weld the support rod base to the side panel of the frame, and install the support rod on the support rod base;

[0025] S2: Place the assembled lifting platform into the working gap of the support frame, and fix the bottom of the support frame and the bottom of the lifting platform with connectors;

[0026] S3: Connect the oil pump, hydraulic oil tank, power control box, and multiple solenoid valves of the hydraulic control module in place; add hydraulic oil to the hydraulic oil tank from the refueling port, press the oil pump start / stop button to start the oil pump, run the oil pump for a while, and exhaust the air in the hydraulic pipeline system;

[0027] S4: hoist the assembled support frame and lifting platform onto the flatbed transport vehicle; lower the height of the lifting platform to the minimum, hoist the rudder blade onto the turntable of the lifting platform, ensure that the rudder blade is in the middle of the support frame as much as possible, lock the 8 support rods on the support frame, and fix the rudder blade in the middle of the support frame; drive the flatbed transport vehicle to the bottom of the rudder stock installation hole at the stern of the hull, and adjust the flatbed transport vehicle forward and backward and left and right to make the center of the rudder hole roughly coincide with the center of the installation hole of the rudder stock on the hull;

[0028] S5: The crane lifts the rudder stock, passes the rudder stock through the mounting hole on the hull and the rudder hole on the rudder blade in sequence, and installs it on the rudder stock base at the stern of the hull. At this time, a small section of the rudder stock enters the rudder hole. Observe the clearance around the rudder stock in the rudder hole. If the clearance around the rudder stock in the rudder hole is uneven, it is necessary to fine-tune the position of the rudder blade. The hydraulic motor is used to drive the turntable to move, and the front and rear position of the rudder blade is adjusted. By moving the position of the support rod in the support rod base, the movement of the rudder blade in the front and rear direction and the left and right direction can be fine-tuned until the clearance around the rudder stock in the rudder hole is uniform.

[0029] S6: After adjusting the clearance, press the oil cylinder lifting button, the third solenoid valve opens, oil is injected into the hydraulic cylinder, the hydraulic cylinder stroke becomes longer, and the lifting platform is driven to slowly lift the rudder blade upward; conversely, press the oil cylinder lowering button, the fourth solenoid valve opens, the hydraulic oil in the hydraulic cylinder is discharged, the hydraulic cylinder stroke becomes shorter, and the lifting platform slowly drives the rudder blade to descend; during the lifting process, observe the situation of the rudder stock in the rudder hole, and repeat the above step S5 to continuously adjust the front and rear, left and right clearances of the rudder stock in the rudder hole to ensure that the clearance around the rudder stock in the rudder hole is uniform during the lifting process to prevent the rudder stock from being scratched, and slowly lift the rudder blade until it is installed in place;

[0030] S7: When the rudder blade is lifted into place, the lower end of the rudder stock is completely exposed in the rudder blade sealing plate. The rudder stock nut is installed on the lower end of the rudder stock, and the rudder blade sealing plate is sealed after being locked and fixed. The installation is completed;

[0031] S8: Lower the lifting platform to the lowest position, loosen the support rod, move the lifting platform out of the support frame, remove the support frame tooling from the tail, apply lubricating oil to the moving parts, transport them to the warehouse and seal them for next use.

[0032] As described above, the assembly tool and assembly method of a ship rudder blade and a rudder stock of the present invention have the following beneficial effects:

[0033] 1. Cancel the installation of lifting horses to avoid damage to the hull caused by burning lifting horses on the hull outer plate;

[0034] 2. The tooling can realize automatic adjustment, which greatly improves the installation efficiency and the installation accuracy;

[0035] 3. Reduce the number of people and installation time, and improve production efficiency;

[0036] 4. Avoid scratches on the rudder stock surface caused by relying on human judgment and the assistance of hoist installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 Shown is a schematic diagram of rudder blade assembly in the prior art.

[0038] Figure 2 Shown is a schematic diagram of the main structure of the assembly tool in Example 1 of the present invention.

[0039] Figure 3 Shown is a side structural schematic diagram of the assembly tool in the first embodiment of the present invention.

[0040] Figure 4 Shown is a schematic diagram of the main structure of the support frame in Example 1 of the present invention.

[0041] Figure 5 Shown is a schematic diagram of the top view of the support frame in Example 1 of the present invention.

[0042] Figure 6 Shown is a side structural schematic diagram of the support frame in Embodiment 1 of the present invention.

[0043] Figure 7 Shown is a schematic diagram of the main structure of the lifting platform in Example 1 of the present invention.

[0044] Figure 8 Shown is a side structural schematic diagram of the lifting platform in the first embodiment of the present invention.

[0045] Fig. 9 Shown is a schematic diagram of the pipeline connection of the hydraulic control module in the first embodiment of the present invention.

[0046] Fig.10 Shown is a schematic diagram of the structure of the power control box in the first embodiment of the present invention.

[0047] Fig.11 Shown is a schematic diagram of the top view of the structure when the rudder blade is assembled in the second embodiment of the present invention.

[0048] Fig.12 It shows a side view of the structure of the rudder blade in the second embodiment of the present invention after it is assembled.

[0049] Component number description

[0050] 1-support frame; 11-upper platform; 100-frame; 101-working gap; 12-support rod base; 13-support rod; 14-lower platform; 15-straight ladder; 16-diagonal support; 2-lifting platform; 21-turntable; 22-hydraulic cylinder; 221-third solenoid valve; 222-fourth solenoid valve; 23-slider; 24-screw; 25-hydraulic motor; 251-first solenoid valve; 252-second solenoid valve; 3-rudder blade; 31- Rudder hole; 32-rudder blade cover; 4-hull; 5-rudder stock; 51-rudder stock nut; 6-flatbed transporter; 7-oil pump; 73-hydraulic oil main pipe; 8-hydraulic oil tank; 81-fuel filling port; 82-air vent; 83-liquid level gauge; 85-return oil main pipe; 9-power control box; 91-power indicator light; 92-oil pump start and stop button; 93-motor forward button; 94-motor reverse button; 95-oil cylinder lifting button; 96-oil cylinder lowering button. DETAILED DESCRIPTION

[0051] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0052] For example, when describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional view showing the device structure will not be partially enlarged according to the general scale, and the schematic view is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional space dimensions of length, width and depth should be included.

[0053] For ease of description, spatial relational terms such as "under", "below", "below", "below", "above", "on", etc. may be used herein to describe the relationship of one element or feature shown in the drawings to other elements or features. It will be understood that these spatial relational terms are intended to include other directions of the device in use or operation in addition to the directions depicted in the drawings. In addition, when a layer is referred to as being "between" two layers, it can be the only layer between the two layers, or there can be one or more intervening layers. As used herein, "between..." means including the end point values.

[0054] In the context of the present application, a structure in which a first feature is described as being "above" a second feature may include embodiments in which the first and second features are formed in direct contact, and may also include embodiments in which additional features are formed between the first and second features, such that the first and second features may not be in direct contact.

[0055] It should be noted that the illustrations provided in this embodiment are only used to illustrate the basic concept of the present invention in a schematic manner, and therefore the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0056] Embodiment 1

[0057] like Figures 2 to 3 As shown, this embodiment provides an assembly tool for a ship rudder blade and a rudder stock, and the assembly tool mainly consists of three parts: a support frame 1, a lifting platform 2, and a flatbed transport vehicle 6.

[0058] like Figures 4 to 6 As shown, the support frame 1 includes two left-right symmetrical frames 100, and a working gap 101 is formed between the two frames 100. The working gap 101 is used to park the lifting platform 2, and the lifting platform is used to place the rudder blade 3. The side panels of the two frames 101 close to each other are both installed with a plurality of support rods 13. The plurality of support rods 13 are evenly distributed and pressed against the surface of the rudder blade 3, so as to support and fix the rudder blade 3.

[0059] A single side panel is fixed with two rows and two columns of four support rods 13, and the support rods 13 are not perpendicular to the side panel. Since the surface of the rudder blade 3 is a curved streamlined design, when the support rods are perpendicular to the surface of the rudder blade 3, they are inevitably not perpendicular to the side panel.

[0060] The support rod 13 is installed on the side panel through the support rod base 12 fixed on the side panel, and the support rod 13 passes through the support rod base 12. By adjusting the position of the support rod 13 in the support rod base 12, the rudder blade 3 can be moved in the front-back direction and the left-right direction so that it is aligned with the rudder stock 5 above. More specifically, the rudder hole 31 on the upper part of the rudder blade 3 is aligned with the rudder stock 5, so that the gap around the rudder hole 31 and the rudder stock 5 is uniform, the coaxiality is ensured, and accurate assembly is achieved. The end of the support rod 13 contacting the rudder blade 3 is installed with a rubber wheel to increase the friction of the contact surface while avoiding damage to the rudder blade surface.

[0061] More specifically, the support rod base 12 includes two base end surfaces parallel to the side panel, both base end surfaces have openings, the support rod 13 passes through the two base end surfaces and is connected to the support rod base 12, and the line connecting the openings of the two base end surfaces has a certain angle with the left and right directions, that is, the support rod is not perpendicular to the side panel.

[0062] Furthermore, an upper platform 11 and a lower platform 14 are provided in the frame 100. The upper platform 11 is horizontally provided above the upper support rod 13, and the lower platform 14 is provided below the lower support rod 13, so that the operator can operate the movement of the support rod. At the same time, the operator can observe the condition of the rudder bar 5 entering the rudder hole 31 on the upper platform, and the operator can tighten the rudder bar nut 51 on the lower platform. During assembly, the rudder blade 3 moves upward, the lower end of the rudder bar passes downward through the rudder hole and the rudder button below the rudder hole, and the rudder bar nut 51 is installed on the lower end of the rudder bar 5, and the upper end surface of the rudder bar nut 51 is pressed against the lower end surface of the rudder button to clamp the rudder bar 5.

[0063] Furthermore, a ladder 15 is installed on the side of the frame 100 for climbing up to the upper and lower platforms.

[0064] Furthermore, if Figures 7 and 8 As shown, the lifting platform 2 includes cross-connected lifting links and a horizontal platform surface connected to the upper end of the lifting links. The lifting links are parallel to the side panels. The lifting links change their cross angles through hydraulic cylinders 22, thereby changing the height of the horizontal platform surface.

[0065] Furthermore, the horizontal surface is provided with a screw 24 arranged along the front and rear direction, the screw 24 is threadedly connected to the slider 23, a turntable 21 is fixed above the slider, the turntable 21 is used to place the rudder blade 3, the turntable 21 itself can rotate around the axis, and rotating the screw 24 can realize the forward and backward movement of the turntable 21 to adjust the front and rear position of the rudder blade 3 and the rotation angle relative to the rudder bar 5.

[0066] Furthermore, a hydraulic motor 25 is installed at the end of the lead screw 24 to drive the rotation of the lead screw 24. Since hydraulic motors are very suitable for applications requiring low speed and high torque, and the speed and torque of the motor can be accurately controlled by adjusting the flow of hydraulic oil. In contrast, electric motors usually require a gearbox to achieve low speed and high torque applications, and require additional electronic components to control speed and torque, so it is more advantageous to use a hydraulic motor here.

[0067] Furthermore, it also includes a flatbed transport vehicle 6, which is used to carry the support frame 1 and the lifting platform 2, so as to transport the rudder blade 3 to the bottom of the stern of the hull and perform rough adjustment of the rudder blade 3 left and right and front and back.

[0068] Furthermore, it also includes a hydraulic control module, such as Figures 9 and 10 As shown, the hydraulic control module includes an oil pump 7, a hydraulic oil tank 8, a power control box 9, and a plurality of solenoid valves.

[0069] Specifically, the first solenoid valve 251 is installed on the first oil inlet pipeline of the hydraulic motor 25, and the second solenoid valve 252 is installed on the second oil inlet pipeline of the hydraulic motor 25. Different oil inlet pipelines are used to drive the internal rotor of the hydraulic motor 25 to rotate in different directions, thereby realizing forward and reverse rotation. The return oil port of the hydraulic motor 25 is connected to the return oil main pipe 85; the third solenoid valve 221 is installed on the oil inlet pipeline of the hydraulic cylinder 22, and the fourth solenoid valve 222 is installed on the oil outlet pipeline of the hydraulic cylinder 22; the inlets of all solenoid valves located in the oil inlet pipeline are connected to the hydraulic oil main pipe 73, and the outlets of all solenoid valves located in the oil outlet pipeline are connected to the return oil main pipe 85, so that the hydraulic oil that has done work returns to the hydraulic oil tank 8 to ensure the normal circulation of the hydraulic oil. The interface of the solenoid valve and the pipeline adopts a quick connector connection to facilitate disassembly and assembly; according to the hydraulic system schematic diagram, each device in the hydraulic system is inserted into the corresponding position.

[0070] According to the layout requirements of the control system schematic diagram, the control circuit of the first solenoid valve 251 is connected to the motor forward button 93 of the power control box 9, and the control circuit of the second solenoid valve 252 is connected to the motor reverse button 94 of the power control box 9; the control circuit of the third solenoid valve 221 is connected to the oil cylinder lifting button 95 of the power control box 9, and the control circuit of the fourth solenoid valve 222 is connected to the oil cylinder lowering button 96 of the power control box 9; the control circuit of the oil pump 7 is connected to the oil pump start and stop button 92 of the power control box 9; the power control box 9 is connected to the external circuit;

[0071] Furthermore, the hydraulic oil tank 8 is provided with a refueling port 81, a vent 82, and an observation liquid level gauge 83. When hydraulic oil is added through the refueling port 81, the liquid level height is observed by observing the liquid level gauge 83, and refueling is stopped when the liquid level height at the liquid level gauge 83 reaches 3 / 4 of the height of the liquid level gauge 83.

[0072] Embodiment 2

[0073] Based on the assembly tool in the first embodiment, this embodiment provides an assembly method, such as Figure 11 to Figure 12 As shown, the following steps are included:

[0074] S1: Assemble the support frame 1 into place, weld the support rod base 12 to the side panel of the frame, and install the support rod 13 on the support rod base 12;

[0075] S2: Place the assembled lifting platform 2 into the working gap of the supporting frame 1, and fix the bottom of the supporting frame 1 and the bottom of the lifting platform 2 with connecting pieces to prevent relative sliding during operation;

[0076] S3: Connect the oil pump 7, hydraulic oil tank 8, power control box 9, and multiple solenoid valves of the hydraulic control module in place; add hydraulic oil to the hydraulic oil tank 8 from the refueling port, observe the liquid level at the level gauge 83, and stop refueling when the liquid level at the level gauge 83 reaches 3 / 4 of the height of the level gauge 83; press the oil pump start / stop button 92 to start the oil pump 7, and run the oil pump 7 for a while to exhaust the air in the hydraulic pipeline system;

[0077] S4: hoist the assembled support frame 1 and lifting platform 2 onto the flatbed transport vehicle 6, fix the contacting parts with the flatbed transport vehicle 6, and make diagonal braces 16 on the left and right sides for positioning to prevent position changes during transportation;

[0078] Lower the height of the lifting platform 2 to the minimum, hoist the rudder blade 3 onto the turntable 21 of the lifting platform 2, ensure that the rudder blade 3 is in the middle of the support frame 1 as much as possible, lock the 8 support rods 13 on the support frame 1, and fix the rudder blade 3 in the middle of the support frame 1 to prevent it from tipping over during transportation;

[0079] Drive the flatbed transporter 6 to the position directly below the mounting hole of the rudder stock 5 at the stern of the hull, and adjust the flatbed transporter 6 forward and backward and left and right to make the center of the rudder hole 31 roughly coincide with the center of the mounting hole of the rudder stock 5 on the hull;

[0080] S5: The crane lifts the rudder stock, passes the rudder stock through the mounting hole on the hull 4 and the rudder hole 31 on the rudder blade in sequence, and installs it on the rudder stock base at the stern of the hull. At this time, a small section of the rudder stock 5 enters the rudder hole 31. The surrounding clearance of the rudder stock 5 in the rudder hole 31 is observed on the upper platform 11. If the surrounding clearance of the rudder stock 5 in the rudder hole 31 is uneven, it is necessary to fine-tune the position of the rudder blade 3. The hydraulic motor 25 is used to drive the turntable 21 to move, and the front and rear position of the rudder blade 3 is adjusted. By moving the position of the support rod in the support rod base, the movement of the rudder blade in the front and rear directions and the left and right directions is fine-tuned until the surrounding clearance of the rudder stock 5 in the rudder hole 31 is uniform. The specific adjustment method is:

[0081] (1) If the rear clearance of the rudder hole 31 is smaller than the front clearance, the rudder blade 3 needs to be adjusted backward. At this time, the motor forward button 93 is pressed, the first solenoid valve 251 is opened, and oil is injected into the hydraulic motor 25, so that the hydraulic motor 25 is controlled to rotate forward to drive the lead screw 24 to rotate forward, thereby driving the turntable 21 to move backward, and driving the entire rudder blade 3 to move backward together;

[0082] (2) If the front clearance of the rudder hole 31 is smaller than the rear clearance, the rudder blade 3 needs to be adjusted forward. At this time, the motor reverse button 94 is pressed, the second solenoid valve 252 is opened, and oil is injected into the hydraulic motor 25, so that the hydraulic motor 25 is controlled to reverse and drive the lead screw 24 to reverse, thereby driving the turntable 21 to move forward, and driving the entire rudder blade 3 to move forward together;

[0083] (3) If the left gap of the rudder hole 31 is smaller than that of the right, the rudder blade 3 needs to be adjusted to the left. At this time, tighten the upper and lower four support rods 13 on the right with a wrench, and loosen the four support rods 13 on the left at the same time. The rudder blade 3 moves to the left under the thrust of the four support rods 13 on the right, thereby driving the entire rudder blade 3 to move to the left; if the left gap of the rudder hole 31 is larger than that of the right, the rudder blade 3 needs to be adjusted to the right. At this time, tighten the upper and lower four support rods 13 on the left with a wrench, and loosen the four support rods 13 on the right at the same time. The rudder blade 3 moves to the right under the thrust of the four support rods 13 on the left, thereby driving the entire rudder blade 3 to move to the right;

[0084] (3) If it is necessary to fine-tune the front-to-back and left-to-right clearance of the rudder hole 31, the front-to-back and left-to-right position of the rudder blade 3 can also be adjusted by adjusting the tightness of the eight support rods 13; if the rudder blade 3 needs to be adjusted to the left, tighten the four upper and lower support rods 13 on the right with a wrench, and loosen the four support rods 13 on the left; if the rudder blade 3 needs to be adjusted to the right, tighten the four upper and lower support rods 13 on the left with a wrench, and loosen the four support rods 13 on the right; if the rudder blade 3 needs to be adjusted backward, tighten the four upper and lower support rods 13 in front with a wrench, and loosen the four upper and lower support rods 13 in the back; if the rudder blade 3 needs to be adjusted forward, tighten the four upper and lower support rods 13 in the back with a wrench, and loosen the four upper and lower support rods 13 in front.

[0085] S6: After adjusting the clearance, press the oil cylinder lifting button 95, the third solenoid valve 221 opens, oil is injected into the hydraulic oil cylinder 22, the stroke of the hydraulic oil cylinder 22 becomes longer, and the lifting platform 2 is driven to slowly lift the rudder blade 3 upward; conversely, press the oil cylinder lowering button 96, the fourth solenoid valve 222 opens, the hydraulic oil in the hydraulic oil cylinder 22 is discharged, the stroke of the hydraulic oil cylinder 22 becomes shorter, and the lifting platform 2 slowly drives the rudder blade 3 to descend; during the lifting process, observe the situation of the rudder stock 5 in the rudder hole 31, and repeat the above step S5 to continuously adjust the front and rear and left and right clearances of the rudder stock 5 in the rudder hole 31 to ensure that during the lifting process, the clearance around the rudder stock 5 in the rudder hole 31 is uniform to prevent the rudder stock 5 from being scratched, and slowly lift the rudder blade 3 until it is installed in place;

[0086] S7: When the rudder blade 3 is lifted into place, the lower end of the rudder stock 5 is completely exposed in the rudder blade sealing plate 32. The rudder stock nut 51 is installed on the lower end of the rudder stock 5, and the rudder blade sealing plate 32 is sealed after being locked and fixed. The installation is completed;

[0087] S8: Lower the lifting platform 2 to the lowest position, loosen the support rod 13, move the lifting platform 2 out of the support frame 1, move the tooling of the support frame 1 out from the tail, apply lubricating oil to the moving parts, transport them to the warehouse and seal them for next use.

[0088] In summary, the present invention provides an assembly tool and assembly method for a ship rudder blade and a rudder stock, and the assembly tool is mainly composed of three parts: a support frame, a lifting platform, and a flatbed transport vehicle. The support frame includes two left-right symmetrical frames, and a working gap for parking the lifting platform is formed between the two frames. The lifting platform is used to place the rudder blade, and the side panels of the two frames close to each other are installed with multiple support rods, and the multiple support rods are evenly distributed and pressed against the surface of the rudder blade, so as to support and fix the rudder blade. The support rod is installed on the side panel through a support rod base fixed to the side panel. By adjusting the position of the support rod in the support rod base, the movement of the rudder blade in the front-back direction and the left-right direction is realized, so that it is aligned with the rudder stock above; at the same time, the front-back position of the rudder blade can be further adjusted through the lifting platform, and finally the clearance around the rudder stock in the rudder hole is uniform, and finally precise assembly is achieved.

[0089] The assembly tooling is reasonably designed, simple to manufacture, low in manufacturing cost and simple to operate. In view of the environmental restrictions on the construction of rudder blades on existing slipways, a centering positioning tooling and method that can quickly and accurately position the rudder blades are proposed for the installation of rudder blades. During the entire installation process, the tooling can be adjusted in multiple dimensions such as front and back, left and right, up and down, so that accurate installation positioning and real-time adjustments during the installation process can be achieved, thereby improving the construction quality and efficiency, reducing the workload of construction personnel, and not only reducing the construction cost, but also effectively reducing the work intensity of installers, avoiding the occurrence of work-related accidents. The advantages of this tooling are mainly: reducing the number of coordinating personnel, eliminating the hoisting horse, and eliminating the forklift coordination during the installation process; reducing the labor intensity of workers, reducing the safety risks of workers, and improving installation efficiency.

[0090] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. An assembly tool for a ship's rudder blade and a rudder stock, characterized in that: The assembly tool comprises a support frame, which comprises two left-right symmetrical frames, a working gap is formed between the two frames, the working gap is used to park the lifting platform, and the lifting platform is used to place the rudder blade, and the side panels of the two frames close to each other are both installed with a plurality of support rods, and the plurality of support rods are evenly distributed and pressed against the surface of the rudder blade, so as to support and fix the rudder blade; The support rod is installed on the side panel through a support rod base fixed on the side panel, and the support rod passes through the support rod base. By adjusting the position of the support rod in the support rod base, the movement of the rudder blade in the front and rear directions and the left and right directions can be achieved, so that the rudder hole on the upper part of the rudder blade is aligned with the rudder stock above.

2. The assembly tool for ship rudder blade and rudder stock according to claim 1 is characterized in that: The lifting platform includes cross-connected lifting links and a horizontal platform surface connected to the upper end of the lifting links. The lifting links are parallel to the side panels. The lifting links change their crossing angles through hydraulic cylinders, thereby changing the height of the horizontal platform surface.

3. The assembly tool for ship rudder blade and rudder stock according to claim 2 is characterized in that: The horizontal surface is provided with a screw arranged along the front and rear direction, the screw is threadedly connected to the slider, a turntable is fixed above the slider, and the turntable is used to place the rudder blade; the turntable itself can rotate around the axis, and rotating the screw can realize the forward and backward movement of the turntable to adjust the front and rear position of the rudder blade and the rotation angle relative to the rudder stock; the end of the screw is equipped with a hydraulic motor to drive the rotation of the screw.

4. The assembly tool for ship rudder blade and rudder stock according to claim 3 is characterized in that: It also includes a hydraulic control module, which includes an oil pump, a hydraulic oil tank, and a power control box; The first solenoid valve is installed on the first oil inlet pipeline of the hydraulic motor, and the second solenoid valve is installed on the second oil inlet pipeline of the hydraulic motor. Different oil inlet pipelines are used to drive the internal rotor of the hydraulic motor to rotate in different directions, thereby realizing forward and reverse rotation. The return oil port of the hydraulic motor is connected to the return oil main pipe; the third solenoid valve is installed on the oil inlet pipeline of the hydraulic cylinder, and the fourth solenoid valve is installed on the oil outlet pipeline of the hydraulic cylinder, and the oil outlet pipeline is connected to the return oil main pipe; the oil inlet pipeline is connected to the hydraulic oil main pipe, and the return oil pipeline returns the hydraulic oil to the hydraulic oil tank.

5. The assembly tool for ship rudder blade and rudder stock according to claim 4 is characterized in that: The control circuit of the first solenoid valve is connected to the motor forward button of the power control box, and the control circuit of the second solenoid valve is connected to the motor reverse button of the power control box; the control circuit of the third solenoid valve is connected to the cylinder lifting button of the power control box, and the control circuit of the fourth solenoid valve is connected to the cylinder lowering button of the power control box; the control circuit of the oil pump is connected to the oil pump start and stop button of the power control box; the power control box is connected to the external circuit.

6. The assembly tool for ship rudder blade and rudder stock according to claim 4, characterized in that: The hydraulic oil tank is provided with a refueling port, a vent port, and an observation liquid level gauge.

7. The assembly tool for ship rudder blade and rudder stock according to claim 1, characterized in that: It also includes a flatbed transport vehicle, which is used to carry the support frame and the lifting platform.

8. The assembly tool for ship rudder blade and rudder stock according to claim 1, characterized in that: A single side panel is fixed with two rows and two columns of four support rods, and the support rods are not perpendicular to the side panel.

9. The assembly tool for ship rudder blade and rudder stock according to claim 1, characterized in that: An upper platform and a lower platform are arranged in the frame, the upper platform is arranged horizontally above the upper support rod, and the lower platform is arranged below the lower support rod.

10. An assembly method using the assembly tool according to any one of claims 5 to 9, characterized in that: The steps include: S1: Assemble the support frame into place, weld the support rod base to the side panel of the frame, and install the support rod on the support rod base; S2: Place the assembled lifting platform into the working gap of the support frame, and fix the bottom of the support frame and the bottom of the lifting platform with connectors; S3: Connect the oil pump, hydraulic oil tank, power control box, and multiple solenoid valves of the hydraulic control module in place; add hydraulic oil to the hydraulic oil tank from the refueling port, press the oil pump start / stop button to start the oil pump, run the oil pump for a while, and exhaust the air in the hydraulic pipeline system; S4: hoist the assembled support frame and lifting platform onto the flatbed transport vehicle; lower the height of the lifting platform to the minimum, hoist the rudder blade onto the turntable of the lifting platform, ensure that the rudder blade is in the middle of the support frame as much as possible, lock the 8 support rods on the support frame, and fix the rudder blade in the middle of the support frame; drive the flatbed transport vehicle to the bottom of the rudder stock installation hole at the stern of the hull, and adjust the flatbed transport vehicle forward and backward and left and right to make the center of the rudder hole roughly coincide with the center of the installation hole of the rudder stock on the hull; S5: The crane lifts the rudder stock, passes the rudder stock through the mounting hole on the hull and the rudder hole on the rudder blade in sequence, and installs it on the rudder stock base at the stern of the hull. At this time, a small section of the rudder stock enters the rudder hole. Observe the clearance around the rudder stock in the rudder hole. If the clearance around the rudder stock in the rudder hole is uneven, it is necessary to fine-tune the position of the rudder blade. The hydraulic motor is used to drive the turntable to move, and the front and rear position of the rudder blade is adjusted. By moving the position of the support rod in the support rod base, the movement of the rudder blade in the front and rear direction and the left and right direction can be fine-tuned until the clearance around the rudder stock in the rudder hole is uniform. S6: After adjusting the clearance, press the oil cylinder lifting button, the third solenoid valve opens, oil is injected into the hydraulic cylinder, the hydraulic cylinder stroke becomes longer, and the lifting platform is driven to slowly lift the rudder blade upward; conversely, press the oil cylinder lowering button, the fourth solenoid valve opens, the hydraulic oil in the hydraulic cylinder is discharged, the hydraulic cylinder stroke becomes shorter, and the lifting platform slowly drives the rudder blade to descend; during the lifting process, observe the situation of the rudder stock in the rudder hole, and repeat the above step S5 to continuously adjust the front and rear, left and right clearances of the rudder stock in the rudder hole to ensure that the clearance around the rudder stock in the rudder hole is uniform during the lifting process to prevent the rudder stock from being scratched, and slowly lift the rudder blade until it is installed in place; S7: When the rudder blade is lifted into place, the lower end of the rudder stock is completely exposed in the rudder blade sealing plate. The rudder stock nut is installed on the lower end of the rudder stock, and the rudder blade sealing plate is sealed after being locked and fixed. The installation is completed; S8: Lower the lifting platform to the lowest position, loosen the support rod, move the lifting platform out of the support frame, remove the support frame tooling from the tail, apply lubricating oil to the moving parts, transport them to the warehouse and seal them for next use.

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