A method of manufacturing a support tube for a vane

Abstract

The application discloses a kind of support pipe type suspension rudder manufacturing method, the rudder plate is made to the rudder plate center line and rudder plate horizontal line of racking as reference, then install rudder rod installation component, horizontal partition, vertical partition, upper edge plate, bottom streamline body and tail material on rudder plate, after installation, with the plate of plug welding hole and rudder plate are matched and install rudder stainless steel pipe, then the perpendicularity of rudder stainless steel pipe is adjusted using adjustment tool, then the whole rudder is adjusted, finally, the tightness of rudder is detected, and the subsequent installation precision of support pipe type suspension rudder can be effectively guaranteed by on-site assembly, and the application is simple to operate, the effect is remarkable, and has higher practicality.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of shipbuilding technology, in particular to a manufacturing method of a support pipe type suspension rudder blade. BACKGROUND

[0002] The rudder blade for ship is an important component of the ship steering system, and its performance directly affects the navigation safety and steering performance of the ship.

[0003] The support pipe type suspension rudder blade needs to be installed on some ship types, and the assembled support pipe type suspension rudder blade provided by the supplier is usually directly hoisted on the ship for installation. Since the support pipe type suspension rudder blade is assembled in advance, the perpendicularity and flatness of the rudder blade cannot meet the requirements after being installed on the ship, resulting in a large installation precision error. SUMMARY

[0004] Therefore, the present application provides a manufacturing method of a support pipe type suspension rudder blade to solve the problems in the background art.

[0005] A manufacturing method of a support pipe type suspension rudder blade, characterized in that it specifically comprises the following steps:

[0006] S1, manufacturing a support pipe type suspension rudder blade jig and drawing a jig horizontal line and a jig center line on the jig;

[0007] S2, manufacturing a rudder blade outer plate on the support pipe type suspension rudder blade jig according to the jig horizontal line and the jig center line, and drawing a rudder blade center line on the rudder blade outer plate;

[0008] S3, manufacturing a rudder stem mounting assembly, a horizontal partition plate, a vertical partition plate, an upper edge plate, a bottom streamline body and a tail material according to a support pipe type suspension rudder blade construction drawing, and drawing installation positioning lines and process hole cover position lines of each component on the rudder blade outer plate;

[0009] S4, cutting a process hole on the rudder blade outer plate according to the process hole cover position lines on the rudder blade outer plate;

[0010] S5, hoisting and fixing the rudder stem mounting assembly, the horizontal partition plate, the vertical partition plate, the upper edge plate, the bottom streamline body and the tail material on the rudder blade outer plate in sequence;

[0011] S6, performing a coating operation on the inside of the rudder blade, and after the coating operation is completed, putting a weathering inhibitor according to the support pipe type suspension rudder blade construction drawing;

[0012] S7, installing an outer plate with a plug welding hole opposite to the rudder blade outer plate, and installing a rudder hoisting stainless steel pipe, adjusting the perpendicularity of the rudder hoisting stainless steel pipe by using an adjusting tool, and forming a support pipe type suspension rudder blade;

[0013] S8, leveling the support pipe type suspension rudder blade, and then welding and fixing the outer plate with the rudder rod installation assembly, horizontal partition, vertical partition, upper edge plate, bottom streamline body and tail material by using the plug welding hole;

[0014] S9, performing tightness detection on the support pipe type suspension rudder blade.

[0015] Preferably, after the rudder blade outer plate is made in step S2, the rudder blade outer plate should be attached to the mold plate of the support pipe type suspension rudder blade mold, and the attachment gap between the two should not exceed 2 mm.

[0016] Preferably, the rudder rod installation assembly comprises a circular truncated cone pipe, upper bearing cast steel and lower bearing cast steel arranged at both ends of the circular truncated cone pipe.

[0017] The specific steps for making the rudder rod installation assembly in step S3 are as follows:

[0018] The excess amount of the two ends of the circular truncated cone pipe is cut according to the construction drawing of the support pipe type suspension rudder blade, so that the length of the circular truncated cone pipe meets the requirements of the construction drawing of the support pipe type suspension rudder blade.

[0019] Check the line type of the upper and lower end circles of the circular truncated cone pipe, so that the line type of the upper and lower end circles of the circular truncated cone pipe respectively matches the bearing line type of the upper and lower bearing cast steel.

[0020] Weld and fix the upper bearing cast steel and the lower bearing cast steel at the upper and lower ends of the circular truncated cone pipe respectively.

[0021] Preferably, in step S5, when installing the horizontal partition and the vertical partition, the horizontal partition and the vertical partition adjacent to the circular truncated cone pipe are installed first, and then the horizontal partitions and the vertical partitions at other positions are installed.

[0022] Preferably, in step S5, after the rudder rod installation assembly is installed, the center line of the circular truncated cone pipe thereof needs to coincide with the center line of the rudder blade, the upper and lower end faces of the upper bearing cast steel and the upper and lower end faces of the lower bearing cast steel need to coincide with the installation positioning line of the rudder rod installation assembly drawn on the rudder blade outer plate, and the upper and lower end faces of the upper bearing cast steel and the upper and lower end faces of the lower bearing cast steel are both perpendicular to the center line of the rudder blade.

[0023] Preferably, the adjusting tool comprises a connecting rod and fixed circular rings vertically fixed at both ends of the connecting rod, a plurality of fastening bolts are arranged on the fixed circular rings, and the fastening bolts are arranged along the radial direction of the fixed circular rings.

[0024] The specific steps for adjusting the verticality of the rudder stainless steel pipe by using the adjusting tool in step S7 are as follows:

[0025] Make the rudder stainless steel pipe extend into the two fixed circular rings of the adjusting tool, and use the fastening bolts to tightly press the rudder stainless steel pipe from different directions to keep the gap between the rudder stainless steel pipe and the fixed circular rings uniform in each direction.

[0026] Preferably, the support pipe type suspension rudder blade is subjected to tightness detection in step S9 by using 0.046 MPa air pressure, and the pressure gauge keeps no pressure drop for 30 minutes, indicating that the tightness of the support pipe type suspension rudder blade meets the requirements.

[0027] The present application has the following advantages:

[0028] The present application uses the center line and horizontal line of the jig as the reference to manufacture the rudder blade outer plate, and then installs the rudder rod installation assembly, horizontal partition plate, vertical partition plate, upper edge plate, bottom streamline body and tail material on the rudder blade outer plate. After installation, the outer plate with plug welding hole is matched with the rudder blade outer plate and the rudder stainless steel pipe is installed. Then the verticality of the rudder stainless steel pipe is adjusted by using the adjusting tool, and the whole rudder blade is leveled. Finally, the tightness of the rudder blade is detected. The subsequent installation precision of the support pipe type suspension rudder blade can be effectively guaranteed by on-site assembly and manufacturing, and the present application is simple to operate, has remarkable effect and high practicability. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings described in the following only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0030] Figure 1 is a schematic diagram of the support pipe type suspension rudder blade after installation.

[0031] Figure 2 is a jig diagram of the support pipe type suspension rudder blade.

[0032] Figure 3 is a C-C cross-sectional view of Figure 2

[0033] Figure 4 is a schematic diagram of the circular cone pipe being welded with the upper bearing cast steel part and the lower bearing cast steel part.

[0034] Figure 5 is a schematic diagram of the support pipe type suspension rudder blade marking and positioning installation of the circular cone pipe.

[0035] Figure 6 is a schematic diagram of the support pipe type suspension rudder blade installation of the horizontal and vertical partition plate, the upper edge plate, the bottom streamline body and the tail material.

[0036] Figure 7 is a schematic diagram of the support pipe type suspension rudder blade installation of the outer plate with plug welding hole on one side.

[0037] Figure 8 is a finished product measurement diagram of the support pipe type suspension rudder blade. ​

[0038] Figure 9 is a top view of the adjusting tool.

[0039] Figure 10 is a schematic diagram of adjusting the verticality of the stainless steel pipe of the hanging rudder by using the adjusting tool.

[0040] The meanings of the reference numerals in the drawings are as follows:

[0041] 1 is a rudder plate, 2 is a support pipe type hanging rudder mold, 3 is a mold horizontal line, 4 is a mold center line, 5 is a mold plate, 6 is a rudder center line, 7 is a horizontal partition plate, 8 is a vertical partition plate, 9 is an upper edge plate, 10 is a bottom streamline body, 11 is a tail material, 12 is a round table pipe, 13 is an upper bearing cast steel piece, 14 is a lower bearing cast steel piece, 15 is a process hole, 16 is an outer plate with a plug welding hole, 17 is a plug welding hole, 18 is a stainless steel pipe of the hanging rudder, 19 is a connecting rod, 20 is a fixed ring, 21 is a fastening bolt, and 22 is a hanging rudder. DETAILED DESCRIPTION

[0042] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be described below in detail through specific embodiments shown in the drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present application. In addition, in the following description, the description of the known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present application.

[0043] The terms used in the present disclosure are merely for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The singular forms "a", "said" and "the" used in the present disclosure and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein means and includes any or all possible combinations of one or more associated listed items.

[0044] In order to better understand the technical solutions of the present application, the present application will be described in detail below in combination with the drawings.

[0045] The present application provides a support pipe type hanging rudder manufacturing method, characterized in that it specifically comprises the following steps:

[0046] S1, a support pipe type hanging rudder mold 2 is made, and a mold horizontal line 3 and a mold center line 4 are drawn on the mold.

[0047] The support pipe type hanging rudder mold 2 is made according to the mold design drawing. When making, the mold plate is lofted according to the size data designed on the mold design drawing, and then the mold plate 5 is cut by a numerical control cutting machine. After the mold is made, the mold horizontal line 3 and the mold center line 4 are drawn on the mold by means of a total station or other measuring equipment.

[0048] S2, according to the rudder frame horizontal line 3 and the rudder frame center line 4, the rudder plate 1 is made on the support pipe type suspension rudder frame 2, and the rudder center line 6 is drawn on the rudder plate 1.

[0049] The rudder plate 1 is spliced by multiple plates with linear type. First, the multiple plates with linear type are spliced into a whole (i.e. the rudder plate), and only positioning welding is performed between the plates, then the rudder center line 6 is drawn on the rudder plate 1, and then the rudder plate 1 is hoisted and placed on the rudder frame 2. When the rudder plate 1 is placed on the rudder frame 2, the rudder center line 6 of the rudder plate 1 needs to coincide with the rudder frame center line 4, and the rudder plate 1 needs to be in close contact with the rudder frame plate 5 of the support pipe type suspension rudder frame, and the close contact gap between the two is not more than 2mm, so as to ensure the linear type of the rudder plate 1, and then the welds between the plates of the rudder plate are welded.

[0050] S3, according to the support pipe type suspension rudder construction drawing, the rudder rod mounting assembly, the horizontal partition plate 7, the vertical partition plate 8, the upper edge plate 9, the bottom streamline body 10 and the tail material 11 are made, and the installation positioning line and the process hole cover position line of each component are drawn on the rudder plate 1.

[0051] The rudder rod mounting assembly includes a circular truncated cone pipe 12, an upper bearing cast steel piece 13 and a lower bearing cast steel piece 14 arranged at both ends of the circular truncated cone pipe.

[0052] When the rudder rod mounting assembly is made, first, the excess of both ends of the circular truncated cone pipe 12 is cut according to the support pipe type suspension rudder construction drawing, so that the length of the circular truncated cone pipe 12 meets the requirements of the support pipe type suspension rudder construction drawing; then, the linear type of the upper and lower end circles of the circular truncated cone pipe 12 is checked, so that the linear type of the upper and lower end circles of the circular truncated cone pipe 12 respectively matches the bearing linear type of the upper and lower bearing cast steel pieces; then, the upper bearing cast steel piece 13 and the lower bearing cast steel piece 14 are respectively welded and fixed at the upper and lower ends of the circular truncated cone pipe 12.

[0053] The horizontal partition plate 7, the vertical partition plate 8, the upper edge plate 9, the bottom streamline body 10 and the tail material 11 are processed according to the size and linear type designed in the support pipe type suspension rudder construction drawing.

[0054] According to the installation positions of the upper bearing cast steel piece 13, the lower bearing cast steel piece 14, the horizontal partition plate 7 and the vertical partition plate 8 on the rudder plate 1 in the support pipe type suspension rudder construction drawing, the installation positioning lines of the upper bearing cast steel piece 13, the lower bearing cast steel piece 14, the horizontal partition plate 7 and the vertical partition plate 8 are respectively drawn on the rudder plate 1, and the process hole cover position line is drawn on the front side of the lower bearing cast steel piece 14.

[0055] S4, cutting a process hole 15 on the rudder plate 1 according to the process hole cover position line on the rudder plate 1, facilitating the later machining of the upper bearing cast steel piece 13 and the lower bearing cast steel piece 14 (the later machining of the upper bearing cast steel piece 13 and the lower bearing cast steel piece 14 is to leave a certain clearance for the installation of the rudder stock).

[0056] S5, hoisting and fixing the rudder stock installation assembly, the horizontal partition plate 7, the vertical partition plate 8, the upper edge plate 9, the bottom streamline body 10 and the tail material 11 on the rudder plate 1 in sequence.

[0057] When installing the rudder stock installation assembly, the center line of the circular truncated cone tube 12 needs to coincide with the rudder center line 6, the upper and lower end faces of the upper bearing cast steel piece 13 and the upper and lower end faces of the lower bearing cast steel piece 14 need to coincide with the installation positioning lines of the upper bearing cast steel piece and the lower bearing cast steel piece drawn on the rudder plate 1, and the allowable deviation of the tolerance is ±1mm; and the upper and lower end faces of the upper bearing cast steel piece 13 and the upper and lower end faces of the lower bearing cast steel piece 13 are both perpendicular to the rudder center line 6, and the allowable deviation of the perpendicularity is ±1mm.

[0058] When installing the horizontal partition plate 7 and the vertical partition plate 8, the horizontal partition plate and the vertical partition plate adjacent to the circular truncated cone tube 12 are installed first, and then the horizontal partition plates and the vertical partition plates at other positions are installed, the angular welds between the horizontal partition plate 7 and the vertical partition plate 8 and the circular truncated cone tube 12 are symmetrically welded first, and then the welds between the horizontal partition plate 7 and the vertical partition plate 8 and the welds between the horizontal partition plate 7 and the vertical partition plate 8 and the rudder plate 1 are symmetrically welded.

[0059] When installing the tail material, attention should be paid to controlling the four-corner horizontal of the support tube type suspension rudder plate.

[0060] S6, performing a coating operation on the inside of the rudder plate, and after the coating operation is completed, putting a weathering inhibitor according to the support tube type suspension rudder plate construction drawing;

[0061] S7, installing an outer plate 16 with a plug welding hole opposite to the rudder plate 1 (that is, the rudder plate is located on one side of the support tube type suspension rudder plate, and the outer plate with the plug welding hole is located on the other side of the support tube type suspension rudder plate), and installing a rudder suspension stainless steel pipe 18, adjusting the perpendicularity of the rudder suspension stainless steel pipe 18 by using an adjusting tool, and forming a support tube type suspension rudder plate.

[0062] The adjusting tool comprises a connecting rod 19 and fixed rings 20 vertically fixed at both ends of the connecting rod 19, a plurality of fastening bolts 21 are arranged on the fixed rings 20 in the radial direction of the fixed rings 20. The inner diameter of the fixed rings 20 matches the outer diameter of the rudder suspension stainless steel pipe 18, and the length of the connecting rod 19 is the distance between the two rudder suspension stainless steel pipes 18.

[0063] The specific steps of adjusting the perpendicularity of the rudder suspension stainless steel pipe 18 by using the adjusting tool are as follows:

[0064] The rudder stainless steel pipe 18 is inserted into the two fixing rings 20 of the adjusting tool, and the fastening bolts 21 are used to tightly press the rudder stainless steel pipe 18 from different directions to keep the gap between the rudder stainless steel pipe 18 and the fixing ring 20 uniform in each direction.

[0065] S8, the support pipe type suspension rudder blade is leveled, and then the outer plate 16 with the plug welding hole is welded and fixed with the rudder rod installation assembly, the horizontal partition plate 7, the vertical partition plate 8, the upper edge plate 9, the bottom streamline body 10 and the tail material 11. The outer plate 16 with the plug welding hole is provided with a plurality of plug welding holes 17, and the welding wire is inserted into the plug welding hole 17 for welding at each position during welding. After welding is completed, the plug welding hole 17 needs to be plugged by using a patch.

[0066] S9, the center line mark and the left and right rudder mark should be made on the upper edge plate 9 and the bottom streamline body 10 of the support pipe type suspension rudder blade, and the tightness of the support pipe type suspension rudder blade is detected by using 0.046 MPa air pressure. The pressure gauge is kept for 30 minutes without pressure drop, which indicates that the tightness of the support pipe type suspension rudder blade meets the requirements.

[0067] Preferably, the length, width and height dimensions of the support pipe type suspension rudder blade are measured and recorded, and the center line surface levelness is measured and recorded.

[0068] Before all the above welding operations, the cleaning work of the weld seam should be done: the weld seam surface paint, moisture, scale and other sundries are cleaned, the butt weld groove and both sides 30 mm are cleaned of sundries; the weld seam groove and both sides 30 mm range are polished clean by using a grinder, and the upper and lower bearing cast steel parts need to be preheated to 100℃±25℃ before welding; the welding sequence is strictly controlled, and the welding is symmetrically performed from the center to the front, back, left and right (i.e. symmetrically welded from the center to the periphery), and the flat angle welding is performed first, and then the vertical angle welding is performed.

[0069] It should be clear that the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor belong to the scope of protection of the present application.

Claims

1. A method for manufacturing a supported tube type suspended rudder blade, characterized in that: The specific steps include: S1: Make a tire frame supporting the tubular suspension rudder blade and mark the tire frame horizontal line and tire frame center line on the tire frame; S2, fabricate the rudder blade outer plate on the supporting tube type suspension rudder blade cradle according to the cradle horizontal line and cradle centerline, and mark the rudder blade centerline on the rudder blade outer plate; S3: Fabricate the rudder stock mounting assembly, horizontal bulkhead, vertical bulkhead, upper edge plate, bottom streamline, and tailstock according to the construction drawings of the supported tubular suspension rudder blade, and draw the installation positioning lines of each component and the position lines of the process hole covers on the rudder blade outer plate; S4, cutting a process hole on the rudder blade outer plate according to the process hole cover position line on the rudder blade outer plate; S5, sequentially hoist and secure the rudder stock mounting assembly, horizontal bulkhead, vertical bulkhead, upper edge plate, bottom streamlined body, and tailstock to the rudder blade outer plate; S6, coating the inside of the rudder blade. After the coating is completed, a weather corrosion inhibitor is added according to the construction drawings of the support tube type suspension rudder blade; S7: Install the outer plating with the plug welding holes opposite to the rudder blade outer plating, and install the rudder hanging stainless steel pipe. Use the adjustment tool to adjust the verticality of the rudder hanging stainless steel pipe to form a supporting tube type hanging rudder blade. The adjustment tooling includes a connecting rod and fixed rings vertically fixed to both ends of the connecting rod, and the fixed rings are provided with a plurality of fastening bolts, which are arranged along the radial direction of the fixed rings; The specific steps of adjusting the verticality of the rudder hanging stainless steel pipe using the adjustment tool in step S7 are: Insert the rudder hanging stainless steel tube into the two fixed rings of the adjustment fixture, and use the fastening bolts to tighten the rudder hanging stainless steel tube from different directions to keep the gap between the rudder hanging stainless steel tube and the fixed rings uniform in all directions; S8, level the supported tube-type suspension rudder blade, and then use the plug welding holes to weld and secure the outer plate with plug welding holes to the rudder stock mounting assembly, horizontal bulkhead, vertical bulkhead, upper edge plate, bottom streamline body and tail material; S9, perform tightness test on the supporting tube type suspended rudder blade.

2. The method for manufacturing a supported tube type suspended rudder blade according to claim 1, characterized in that: After the rudder blade outer plate is manufactured in step S2, the rudder blade outer plate should be fitted with the tire plate of the supporting tubular suspension rudder blade tire frame, and the fitting gap between the two should not exceed 2 mm.

3. The method for manufacturing a supported tube type suspended rudder blade according to claim 1, characterized in that: The rudder stock mounting assembly comprises a truncated cone tube, an upper bearing steel casting and a lower bearing steel casting provided at both ends of the truncated cone tube; The specific steps of making the rudder stock mounting assembly in step S3 are: According to the construction drawings of the support tube type suspension rudder blade, cut the allowances at both ends of the truncated cone tube so that the length of the truncated cone tube meets the requirements of the construction drawings of the support tube type suspension rudder blade; Check the linear shapes of the upper and lower ends of the truncated cone tube to ensure that they match the linear shapes of the upper and lower bearing steel castings respectively; The upper bearing steel casting and the lower bearing steel casting are respectively welded and fixed to the upper end and the lower end of the frustum tube.

4. The method for manufacturing a supported tube type suspended rudder blade according to claim 3, characterized in that: In step S5, when installing the horizontal partitions and the vertical partitions, the horizontal partitions and the vertical partitions adjacent to the frustum tube are installed first, and then the horizontal partitions and the vertical partitions at other positions are installed.

5. The method for manufacturing a supported tube type suspended rudder blade according to claim 1, characterized in that: In step S5, after the rudder stock mounting assembly is installed, the center line of its frustum tube must coincide with the center line of the rudder blade, the upper and lower end surfaces of the upper bearing steel casting and the upper and lower end surfaces of the lower bearing steel casting must coincide with the installation positioning line of the rudder stock mounting assembly drawn on the outer plate of the rudder blade, and the upper and lower end surfaces of the upper bearing steel casting and the upper and lower end surfaces of the lower bearing steel casting are both perpendicular to the center line of the rudder blade.

6. The method for manufacturing a supported tube type suspended rudder blade according to claim 1, characterized in that: In step S9, the tightness of the support tube type suspension rudder blade is tested using an air pressure of 0.046 MPa. The pressure gauge maintains no pressure drop for 30 minutes, indicating that the tightness of the support tube type suspension rudder blade meets the requirements.

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