Manufacturing method of supporting tube type suspension rudder blade

Abstract

The invention discloses a method for manufacturing a support tube type suspension rudder blade, which comprises the following steps of: manufacturing a rudder blade outer plate by taking a jig frame center line and a jig frame horizontal line of a jig frame as references, then mounting a rudder stock mounting component, a horizontal partition plate, a vertical partition plate, an upper edge plate, a bottom streamline body and a tail material on the rudder blade outer plate, and after the mounting is completed, mounting the rudder blade outer plate on the rudder blade outer plate. The outer plate with the plug welding holes and the rudder blade outer plate are oppositely combined to install the rudder stainless steel pipe, then the perpendicularity of the rudder stainless steel pipe is adjusted through the adjusting tool, the whole rudder blade is leveled, finally tightness detection is conducted on the rudder blade, and the follow-up installation precision of the supporting pipe type suspension rudder blade can be effectively guaranteed through field assembly and manufacturing. The method is easy to operate, remarkable in effect and high in practicability.

Description

Technical Field

[0001] The invention relates to the technical field of shipbuilding, and in particular to a method for manufacturing a supported tube type suspended rudder blade. Background Art

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

[0003] Some types of ships need to install support tube suspended rudder blades. Usually, the assembled support tube suspended rudder blades provided by the supplier are directly hoisted onto the ship for installation. In this way, since the support tube suspended rudder blades are assembled in advance, the verticality and flatness of the rudder blades cannot meet the requirements after they are installed on board, resulting in a large installation accuracy error. Summary of the invention

[0004] In view of this, the present invention provides a method for manufacturing a supported tube type suspended rudder blade to solve the problems existing in the above-mentioned background technology.

[0005] A method for manufacturing a supported tube type suspended rudder blade, characterized in that it specifically comprises the following steps:

[0006] S1, making a tire frame supporting a tubular suspension rudder blade and marking a tire frame horizontal line and a tire frame center line on the tire frame;

[0007] S2, according to the tire frame horizontal line and tire frame center line, make the rudder blade outer plate on the supporting tube type suspension rudder blade tire frame, and mark the rudder blade center line on the rudder blade outer plate;

[0008] S3, manufacture the rudder stock installation assembly, horizontal bulkhead, vertical bulkhead, upper edge plate, bottom streamline body and tail material according to the construction drawings of the supported tube suspension rudder blade, and draw the installation positioning lines of each component and the process hole cover position lines 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 line on the rudder blade outer plate;

[0010] S5, sequentially hang and fix the rudder stock mounting assembly, horizontal bulkhead, vertical bulkhead, upper edge plate, bottom streamline body and tail material on the rudder blade outer plate;

[0011] S6, coating the inside of the rudder blade. After the coating is completed, a meteorological corrosion inhibitor is placed according to the construction drawing of the support tube type suspension rudder blade;

[0012] S7, installing the outer plate with the plug welding hole opposite to the rudder blade outer plate, and installing the rudder hanging stainless steel pipe, and adjusting the verticality of the rudder hanging stainless steel pipe by using the adjustment tool to form a supporting tube type hanging rudder blade;

[0013] S8, level the supporting tube suspension rudder blade, and then weld and fix 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 through plug welding holes;

[0014] S9, perform tightness test on the supporting tube type suspended rudder blades.

[0015] Preferably, 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 shall not exceed 2 mm.

[0016] Preferably, the rudder stock mounting assembly comprises a truncated cone tube, an upper bearing steel casting and a lower bearing steel casting arranged at both ends of the truncated cone tube;

[0017] The specific steps of making the rudder stock mounting assembly in step S3 are:

[0018] According to the construction drawings of the supporting tube type suspension rudder blade, cut the margins 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 supporting tube type suspension rudder blade;

[0019] Check the line shapes of the upper and lower end circles of the truncated cone tube to make them coincide with the bearing line shapes of the upper and lower bearing steel castings respectively;

[0020] The upper bearing steel casting and the lower bearing steel casting are respectively welded and fixed to the upper and lower ends of the truncated cone tube.

[0021] Preferably, in step S5, when installing the horizontal partitions and the vertical partitions, the horizontal partitions and the vertical partitions adjacent to the truncated cone tube 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 stock mounting assembly is installed, the center line of its frustum tube needs to 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 need to 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.

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

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

[0025] Make the rudder hanging stainless steel tube extend into the two fixed rings of the adjustment tooling, 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.

[0026] Preferably, in step S9, the tightness test of the supporting tube type suspension rudder blade is performed using an air pressure of 0.046 MPa, and the pressure gauge maintains no pressure drop for 30 minutes, indicating that the tightness of the supporting tube type suspension rudder blade meets the requirements.

[0027] The beneficial effects of the present invention are:

[0028] The present invention manufactures the rudder blade outer plate based on the tire frame center line and the tire frame horizontal line of the tire frame, and then installs the rudder stock installation assembly, the horizontal partition, the vertical partition, the upper edge plate, the bottom streamline body and the tail material on the rudder blade outer plate. After the installation, the outer plate with the plug welding hole is aligned with the rudder blade outer plate and the rudder hanging stainless steel pipe is installed. Then, the verticality of the rudder hanging stainless steel pipe is adjusted by adjusting the tooling, and then the whole rudder blade is leveled. Finally, the rudder blade is tested for tightness. The support tube type suspension rudder blade is manufactured by on-site assembly to effectively ensure its subsequent installation accuracy. The present invention is simple to operate, has significant effects and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 This is a schematic diagram of the installed support tube suspension rudder blade.

[0031] Figure 2 It is a diagram of the tire frame supporting the tubular suspended rudder blade.

[0032] Figure 3 yes Figure 2 CC section view.

[0033] Figure 4 It is a schematic diagram of the truncated cone tube, the upper bearing steel casting, and the lower bearing steel casting being welded together.

[0034] Figure 5 It is a schematic diagram of marking and positioning the truncated cone tube for supporting the tube-type suspended rudder blade.

[0035] Figure 6 It is a schematic diagram of the installation of horizontal and vertical partitions, upper edge plates, bottom streamlines and tail materials for supporting tubular suspended rudder blades.

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

[0037] Figure 8 This is the completed measurement drawing of the supported tube-type suspended rudder blade.

[0038] Fig. 9 It is a top view of the adjustment tooling.

[0039] Fig.10 It is a schematic diagram of using the adjustment tool to adjust the verticality of the rudder hanging stainless steel pipe.

[0040] The meanings of the numbers in the figure are:

[0041] 1 is the rudder blade outer plate, 2 is the supporting tube type hanging rudder blade tire frame, 3 is the tire frame horizontal line, 4 is the tire frame center line, 5 is the tire frame tire plate, 6 is the rudder blade center line, 7 is the horizontal partition, 8 is the vertical partition, 9 is the upper edge plate, 10 is the bottom streamline body, 11 is the tail material, 12 is the frustum tube, 13 is the upper bearing steel casting, 14 is the lower bearing steel casting, 15 is the process hole, 16 is the outer plate with plug welding hole, 17 is the plug welding hole, 18 is the rudder hanging stainless steel pipe, 19 is the connecting rod, 20 is the fixing ring, 21 is the fastening bolt, and 22 is the hanging rudder blade. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is described below by the specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

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

[0044] In order to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings.

[0045] The present invention provides a method for manufacturing a supported tube type suspended rudder blade, which is characterized by comprising the following steps:

[0046] S1, making a support tubular suspension rudder blade tire frame 2 and marking a tire frame horizontal line 3 and a tire frame center line 4 on the tire frame.

[0047] The support tubular suspension rudder blade tire frame 2 is manufactured according to the tire frame design drawing. During manufacturing, the tire frame tire plate is firstly laid out according to the size data designed on the tire frame design drawing, and then the tire frame tire plate 5 is cut out by a CNC cutting machine. After the tire frame is manufactured, the tire frame horizontal line 3 and the tire frame center line 4 are marked on the tire frame with the help of a total station or other measuring equipment.

[0048] S2, according to the tire frame horizontal line 3 and the tire frame center line 4, the rudder blade outer plate 1 is manufactured on the supporting tube type suspension rudder blade tire frame 2, and the rudder blade center line 6 is marked on the rudder blade outer plate 1.

[0049] The rudder blade outer plate 1 is made of multiple linear plates. First, multiple linear plates are spliced ​​into a whole (i.e., the rudder blade outer plate), and only positioning welding is performed between the plates. Then, the rudder blade center line 6 is marked on the rudder blade outer plate 1, and then the rudder blade outer plate 1 is hoisted and placed on the tire frame 2. When the rudder blade outer plate 1 is placed on the tire frame 2, the rudder blade center line 6 of the rudder blade outer plate 1 must coincide with the tire frame center line 4, and the rudder blade outer plate 1 must be fitted with the tire frame plate 5 of the supporting tubular suspension rudder blade tire frame, and the fitting gap between the two does not exceed 2mm, so as to ensure the linear shape of the rudder blade outer plate 1, and then the weld between the plates of the rudder blade outer plate is welded.

[0050] S3, according to the construction drawings of the supporting tube type suspended rudder blade, manufacture the rudder stock installation assembly, horizontal bulkhead 7, vertical bulkhead 8, upper edge plate 9, bottom streamline body 10 and tail material 11, and draw the installation positioning lines of each component and the process hole cover position lines on the rudder blade outer plate 1.

[0051] The rudder stock mounting assembly comprises a truncated cone tube 12, an upper bearing steel casting 13 and a lower bearing steel casting 14 arranged at both ends of the truncated cone tube.

[0052] When making the rudder stock installation assembly, first cut the excess at both ends of the truncated cone tube 12 according to the construction drawings of the support tube type suspended rudder blade, so that the length of the truncated cone tube 12 meets the requirements of the construction drawings of the support tube type suspended rudder blade; then check the line shape of the upper and lower end circles of the truncated cone tube 12, so that the line shape of the upper and lower end circles of the truncated cone tube 12 coincides with the bearing line shape of the upper and lower bearing steel castings respectively; then, the upper bearing steel casting 13 and the lower bearing steel casting 14 are respectively welded and fixed to the upper and lower ends of the truncated cone tube 12.

[0053] The horizontal bulkhead 7, the vertical bulkhead 8, the upper edge plate 9, the bottom streamline body 10 and the tail material 11 are all processed according to the dimensions and line shapes designed in the construction drawings of the supporting tubular suspension rudder blade.

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

[0055] S4, according to the process hole cover position line on the rudder blade outer plate 1, a process hole 15 is cut on the rudder blade outer plate 1 to facilitate the later machining of the upper bearing steel casting 13 and the lower bearing steel casting 14 (the later machining of the upper bearing steel casting 13 and the lower bearing steel casting 14 is to leave a certain matching gap for installing the rudder stock).

[0056] S5, sequentially hang and fix the rudder stock mounting assembly, the horizontal bulkhead 7, the vertical bulkhead 8, the upper edge plate 9, the bottom streamline body 10 and the tail material 11 on the rudder blade outer plate 1.

[0057] When installing the rudder stock mounting assembly, the center line of its truncated cone tube 12 must coincide with the center line 6 of the rudder blade, and the upper and lower end surfaces of the upper bearing steel casting 13 and the upper and lower end surfaces of the lower bearing steel casting 14 must coincide with the installation positioning lines of the upper bearing steel casting and the lower bearing steel casting drawn on the rudder blade outer plate 1, with an allowable tolerance deviation of ±1mm; and the upper and lower end surfaces of the upper bearing steel casting 13 and the upper and lower end surfaces of the lower bearing steel casting 13 are both perpendicular to the center line 6 of the rudder blade, with an allowable verticality deviation of ±1mm.

[0058] When installing the horizontal partition 7 and the vertical partition 8, first install the horizontal partition and the vertical partition adjacent to the truncated cone tube 12, and then install the horizontal partition and the vertical partition at other positions. First, symmetrically weld the fillet welds between the horizontal partition 7 and the vertical partition 8 and the truncated cone tube 12, and then symmetrically weld the welds between the horizontal partition 7 and the vertical partition 8, and the welds between the horizontal partition 7 and the vertical partition 8 and the rudder blade outer plate 1.

[0059] When installing the tail material, attention should be paid to controlling the level of the four corners of the longitudinal surface of the supporting tubular suspension rudder blade.

[0060] S6, coating the inside of the rudder blade. After the coating is completed, a meteorological corrosion inhibitor is placed according to the construction drawing of the support tube type suspension rudder blade;

[0061] S7, install the outer plate 16 with the plug welding hole opposite to the rudder blade outer plate 1 (that is, the rudder blade outer plate is located on one side of the supporting tube type suspension rudder blade, and the outer plate with the plug welding hole is located on the other side of the supporting tube type suspension rudder blade), and install the rudder hanging stainless steel tube 18, and use the adjustment tool to adjust the verticality of the rudder hanging stainless steel tube 18 to form a supporting tube type suspension rudder blade.

[0062] The adjustment tooling includes a connecting rod 19, and a fixing ring 20 vertically fixed at both ends of the connecting rod 19. The fixing ring 20 is provided with a plurality of fastening bolts 21, and the fastening bolts 21 are installed along the radial direction of the fixing ring 20. The inner diameter of the fixing ring 20 matches the outer diameter of the rudder hanging stainless steel tube 18, and the length of the connecting rod 19 is the distance between the two rudder hanging stainless steel tubes 18.

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

[0064] The rudder hanging stainless steel tube 18 is inserted into the two fixing rings 20 of the adjustment tool, and the rudder hanging stainless steel tube 18 is tightened from different directions by the fastening bolts 21 so that the gap between the rudder hanging stainless steel tube 18 and the fixing rings 20 is kept uniform in all directions.

[0065] S8, the supporting tube type suspension rudder blade is leveled, and then the outer plate 16 with plug welding holes is welded and fixed to the rudder stock mounting assembly, the horizontal bulkhead 7, the vertical bulkhead 8, the upper edge plate 9, the bottom streamline body 10 and the tail material 11 by using the plug welding holes 17. A plurality of plug welding holes 17 are provided on the outer plate 16 with plug welding holes. During welding, the welding wire is inserted into the plug welding holes 17 to perform welding at various positions. After welding is completed, the plug welding holes 17 need to be sealed with a patch plate.

[0066] S9. The centerline mark and left and right rudder marks are to be made on the upper edge plate 9 and the bottom streamline body 10 of the support tube type suspension rudder blade. The tightness of the support tube type suspension rudder blade is tested using 0.046MPa air pressure. The pressure gauge remains without pressure drop for 30 minutes, indicating that the tightness of the support tube type suspension rudder blade meets the requirements.

[0067] Preferably, the length, width and height of the supporting tubular suspended rudder blade are measured and recorded, and the horizontality of its centerline is also measured and recorded.

[0068] Before all the above welding operations, the welds must be cleaned: clean the paint, moisture, oxide scale and other debris on the weld surface, remove debris inside the butt weld groove and 30mm on both sides; use a grinder to grind the weld groove and 30mm on both sides clean, and preheat the upper and lower bearing castings to 100℃±25℃ before welding; strictly control the welding sequence, weld symmetrically from the center to the front, back, left and right (that is, weld symmetrically from the center to the surroundings), first weld the flat fillet, then the vertical fillet.

[0069] It should be clear that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. A method for manufacturing a supported tube type suspended rudder blade, characterized in that: The specific steps include: S1, making a tire frame supporting a tubular suspension rudder blade and marking a tire frame horizontal line and a tire frame center line on the tire frame; S2, according to the tire frame horizontal line and tire frame center line, make the rudder blade outer plate on the supporting tube type suspension rudder blade tire frame, and mark the rudder blade center line on the rudder blade outer plate; S3, manufacture the rudder stock installation assembly, horizontal bulkhead, vertical bulkhead, upper edge plate, bottom streamline body and tail material according to the construction drawings of the supported tube suspension rudder blade, and draw the installation positioning lines of each component and the process hole cover position lines 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 hang and fix the rudder stock mounting assembly, horizontal bulkhead, vertical bulkhead, upper edge plate, bottom streamline body and tail material on the rudder blade outer plate; S6, coating the inside of the rudder blade. After the coating is completed, a meteorological corrosion inhibitor is placed according to the construction drawing of the support tube type suspension rudder blade; S7, installing the outer plate with the plug welding hole opposite to the rudder blade outer plate, and installing the rudder hanging stainless steel pipe, and adjusting the verticality of the rudder hanging stainless steel pipe by using the adjustment tool to form a supporting tube type hanging rudder blade; S8, level the supporting tube suspension rudder blade, and then weld and fix 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 through plug welding holes; 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 shall 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 arranged 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 supporting tube type suspension rudder blade, cut the margins 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 supporting tube type suspension rudder blade; Check the line shapes of the upper and lower end circles of the truncated cone tube to make them coincide with the bearing line 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 and lower ends of the truncated cone 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 truncated cone 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: The adjustment tool comprises a connecting rod and a fixing ring vertically fixed at both ends of the connecting rod, and a plurality of fastening bolts are arranged on the fixing ring, and the fastening bolts are arranged along the radial direction of the fixing ring; The specific steps of adjusting the verticality of the rudder hanging stainless steel pipe by using the adjustment tool in step S7 are: Make the rudder hanging stainless steel tube extend into the two fixed rings of the adjustment tooling, 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.

7. 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, and 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.

Images