A method for installing a ship rudder with turning vane

Abstract

The application relates to a kind of installation methods of ship rudder turning vane steering gear, which comprises the following steps: one, the hydraulic installation of rudder stock and rudder vane is completed; two, the center of rudder vane is adjusted to coincide with the center line of ship body or parallel, at this time the angle of rudder vane is zero; three, the hydraulic installation of steering gear and rudder stock is carried out; four, three equal division positioning rings are installed on the sealing seat of down rudder bearing, the center line of rudder stock is measured and adjusted to be concentric with the center line of down rudder bearing and the theoretical center line of rudder system; five, the rudder vane and rudder stock are fixed; six, the clearance of front, back, left and right of steering gear stator and rotor is adjusted to be equal and the height is adjusted to be equal by using horizontal direction adjusting assembly and vertical direction adjusting bolt; seven, the installation of steering gear is completed; eight, the three equal division positioning rings, horizontal direction adjusting assembly and vertical direction adjusting bolt are removed. The method of the application provides the installation precision of steering gear, reduces the risk probability of abnormal wear of steering gear and down rudder bearing in use and the probability of water leakage of down rudder bearing sealing, and improves the use reliability.

Description

Technical Field

[0001] This invention belongs to the field of shipbuilding technology, specifically relating to a method for installing a ship's rotary steering gear. Background Technology

[0002] The installation of steering gear is indispensable in the shipbuilding process. Currently, many ships use vane-type steering gear, which has a complex structure and requires more stringent installation procedures.

[0003] In the existing technology, before installing the servo, the rudder stock is only roughly placed in the middle of the rudder system and the lower rudder bearing. There is a large deviation in the concentricity between the center line of the rudder stock and the center line of the rudder system and the lower rudder bearing. Under such circumstances, installing the servo can easily cause abnormal wear of the servo and the lower rudder bearing, and the seal at the upper end of the lower rudder bearing seat is prone to water leakage. Summary of the Invention

[0004] To address the problems existing in the prior art, this invention provides a method for installing a ship's rotary steering gear. The installation method of this invention is based on a dedicated positioning device, ensuring concentricity of the steering gear, rudder stock, lower rudder bearing, and lower rudder bearing seal. This reduces the probability of abnormal wear of the steering gear and lower rudder bearing during use, as well as the probability of water leakage from the lower rudder bearing seal, thus improving the reliability of the device.

[0005] To achieve the above-mentioned objectives, the technical solution provided by this invention patent is as follows:

[0006] A method for installing a ship's rotary steering gear, the method comprising the following steps:

[0007] The first step is to install the rudder stock into the lower rudder bearing housing, thus completing the hydraulic installation of the rudder stock and rudder blade;

[0008] The second step is to use a plumb bob at the front and rear centerline marks at the lower end of the rudder blade to adjust the center of the rudder blade to coincide with or be parallel to the centerline of the hull. At this time, the angle of the rudder blade is zero.

[0009] The third step is to align the servo motor's zero position with the rudder stick's zero position mark line, and then perform hydraulic installation of the servo motor and rudder stick.

[0010] The fourth step is to install a dedicated three-part positioning ring on the lower rudder bearing sealing seat at the lower rudder bearing seat, and measure and adjust the gap between the rudder stock copper sleeve and the lower end of the lower rudder bearing to ensure that the center line of the rudder stock is concentric with the center line of the lower rudder bearing (2) and the theoretical center line of the rudder system.

[0011] Fifth step: Use jacks and straps to secure the rudder blade and rudder stock;

[0012] Step 6: Weld the horizontal adjustment assembly to the servo base, and use the horizontal adjustment assembly and vertical adjustment bolts to adjust the front, rear, left, and right clearances and heights of the servo stator and rotor to be equal.

[0013] Step 7: Temporarily fix the servo motor, and then install the servo motor.

[0014] Step 8: After the servo motor is installed, remove the three-part positioning ring, the horizontal adjustment assembly, and the vertical adjustment bolt.

[0015] In an installation method of a ship rotor-type steering gear according to the present invention, a circular hole is provided in the middle of the three-part positioning ring. The inner diameter of the circular hole is slightly larger than the outer diameter of the rudder stock. A raised annular ring is provided on the outer circle of the circular hole. The outer diameter of the annular ring is equal to the inner diameter of the lower rudder bearing sealing seat.

[0016] In an installation method of a ship rotary steering gear according to the present invention, the three-part positioning ring is integrally machined and cut into three equal parts, and the annular ring is also equally machined into three parts. Multiple through threaded holes and through holes are evenly distributed on the outer side of the annular ring. A lifting bolt is provided in the through threaded hole. The size, arrangement and number of the through holes are consistent with the mounting holes of the upper cover plate of the lower rudder bearing sealing seat.

[0017] In an installation method of a ship rotary steering gear according to the present invention, the horizontal adjustment assembly includes a vertical plate, a liner plate and an adjusting bolt. Two parallel liners are vertically welded to the vertical plate. A bolt hole is provided in the middle of the vertical plate, and the adjusting bolt is screwed into the bolt hole of the vertical plate.

[0018] In the installation method of a ship rotary steering gear of the present invention, the vertical adjustment bolt is a fully threaded bolt, and the diameter and pitch of the fully threaded bolt are consistent with the lifting threaded hole on the steering gear base.

[0019] In the seventh step of the present invention, the installation of a ship's rotary steering gear includes the following specific steps:

[0020] S61, Servo adjustment shims fit properly; contact surface required: 25.4×25.4mm. 2 There should be no fewer than three points within the area, and the gap should be such that a 0.05mm feeler gauge can be inserted no more than 10mm, and a 0.1mm feeler gauge cannot be inserted at all;

[0021] S62. Drill holes for the servo gaskets and ream holes for the servo. Machin the reaming bolts according to the size of each reaming hole and the fit tolerance between the reaming hole and the reaming bolt.

[0022] S63. Based on the actual fit between the reamed hole and the reamed bolt, select the installation method of the reamed bolt: for clearance fit, the bolt can be installed directly; for interference fit, the reamed bolt needs to be frozen with dry ice or liquid nitrogen before installation. After the reamed bolt is installed, it should be tightened. If the reamed bolt has been frozen, it needs to be left for 24 hours after installation before tightening.

[0023] S64. Install the servo thrust block, where the contact area between the wedge block and the servo base, and between the wedge block and the support plate, should not be less than 60%, the gap should be 0.05mm, the feeler gauge should not be inserted more than 10mm, and a 0.1mm feeler gauge should not be inserted.

[0024] Based on the above technical solution, the installation method of the ship rotary steering gear of the present invention has achieved the following technical effects through practical application:

[0025] 1. The installation method of the present invention ensures the concentricity of the rudder stock and the lower rudder bearing by setting three equally divided positioning rings and measuring and adjusting the gap between the rudder stock copper sleeve and the lower end of the lower rudder bearing. The rudder rotor and the rudder stock are hydraulically installed, and the concentricity of the rudder rotor and the rudder stock is ensured by machining. The stator and rotor of the rudder are adjusted to be concentric by using the horizontal adjustment component and the vertical adjustment bolt.

[0026] 2. By using the rotary blade servo positioning device and servo installation method of the present invention, the servo, rudder stick, lower rudder bearing, and lower rudder bearing seal are ensured to be concentric, reducing the probability of abnormal wear of the servo and lower rudder bearing during use and the probability of water leakage of the lower rudder bearing seal, thus improving the reliability of the device.

[0027] 3. The installation method of the present invention incorporates a specially designed three-part positioning ring, a horizontal adjustment component, and a vertical adjustment bolt. The three types of special devices have simple structures, are easy to manufacture, convenient to assemble and disassemble, and can be reused multiple times. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the rudder stock positioning for the ship's rotary steering gear according to the present invention.

[0030] Figure 2 This is a side view schematic diagram of the three-part positioning ring structure in this invention.

[0031] Figure 3This is a top view schematic diagram of the three-part positioning ring structure in this invention.

[0032] Figure 4 This is a schematic diagram illustrating the use of the horizontal adjustment component of the ship's rotary steering gear according to the present invention.

[0033] Figure 5 This is a schematic diagram illustrating the use of the vertical adjustment bolt for the ship's rotary steering gear according to the present invention.

[0034] Figure 6 This is a front view schematic diagram of the horizontal adjustment component in this invention.

[0035] Figure 7 This is a top view of the horizontal adjustment component in this invention.

[0036] Figure 8 This is a schematic diagram of the measurement points for the front-to-back and left-to-right clearances and height differences between the stator and rotor of the servo motor in this invention.

[0037] The specific explanations of the reference numerals in the attached drawings are as follows: 1 is the rudder blade, 2 is the lower rudder bearing, 3 is the rudder stock copper sleeve, 4 is the lower rudder bearing seat, 5 is the lower rudder bearing sealing seat, 6 is the tri-divided positioning ring, 7 is the rudder stock, 8 is the servo base, 9 is the welding gasket, 10 is the servo base, 11 is the vertical adjustment bolt, 12 is the horizontal adjustment assembly, 13 is the adjustment bolt, 14 is the vertical plate, 15 is the liner plate, 16 is the through threaded hole, and 17 is the servo. Detailed Implementation

[0038] The following detailed description of the ship rotor steering gear positioning device and steering gear installation method of the present invention, in conjunction with the accompanying drawings and specific embodiments, is provided to provide a clearer understanding of its structure and installation process. However, this should not be construed as limiting the scope of protection of the present invention.

[0039] This embodiment first provides a ship rotary steering gear positioning device, which is specifically used in the steering gear installation process.

[0040] like Figures 1-8 As shown, the positioning device includes three components: a three-part positioning ring 6, a horizontal adjustment component 12, and a vertical adjustment bolt 11. These components are placed in different locations during installation to achieve position and accuracy adjustment.

[0041] like Figure 2 and Figure 3As shown, the three-part positioning ring 6 has a circular hole in the middle, the inner diameter of which is slightly larger than the outer diameter of the rudder stock 7. A raised annular ring is provided on the outer circle of the circular hole, the outer diameter of which is equal to the inner diameter of the lower rudder bearing seal 5. The three-part positioning ring (6) is integrally machined and cut into three equal parts. The annular ring is also integrally machined into three parts. Multiple through threaded holes and through holes are evenly distributed on the outer side of the annular ring. A lifting bolt is provided in the through threaded hole. The size, arrangement and number of the through holes are consistent with the mounting holes of the upper cover plate of the lower rudder bearing seal 5. The main feature of the three-part positioning ring 6 is that it is integrally machined and then divided into three equal parts. The three-part design is for easy installation and disassembly. If it were a single ring, installation would be inconvenient and it would be impossible to disassemble it later. The three-part positioning ring 6 is installed after the rudder stock and rudder blade are connected and the rudder blade angle is adjusted to zero. The fit clearance between the three-part positioning ring 6 and the rudder stock and the lower rudder bearing seal 5 ensures that the upper end of the rudder stock and the lower rudder bearing are concentric.

[0042] Specifically, the tri-divided positioning ring 6 has six through-threaded holes for installing and removing lifting bolts, and multiple through-holes for installing fixing bolts. The size, arrangement, and number of through-holes are consistent with the mounting holes on the lower rudder bearing seal cover plate. Each tri-divided positioning ring has through-threaded holes and through-holes evenly distributed. The inner diameter of the tri-divided positioning ring 6 is based on the diameter of the corresponding rudder stock 7, with a tolerance of [missing value]. The basic dimensions are the outer diameter of the three-equal-division locating ring 6 boss, the rudder bearing seat 4 sealing seat 5 inner diameter, and the tolerance is [missing information].

[0043] like Figure 4 , Figure 6 and Figure 7 As shown, the horizontal adjustment assembly 12 includes a vertical plate 14, a backing plate 15, and an adjusting bolt 13. Two parallel backing plates 5 are vertically welded to the vertical plate 14. A bolt hole is provided in the middle of the vertical plate 14, and the adjusting bolt 13 is screwed into the bolt hole of the vertical plate 14. In use, the front end of the adjusting bolt 13 abuts against the side edge of the servo base 8, and a horizontal thrust is applied to the servo base 8 by tightening the adjusting bolt 13. In practice, the vertical plate 14 is 20mm thick and has an M20 through-threaded hole 16. The adjusting bolt 13 is M20×125.

[0044] like Figure 5As shown, the vertical adjustment bolt 11 is a fully threaded bolt, and its diameter and pitch are consistent with the lifting threaded hole on the servo base 8. In use, the vertical adjustment bolt 11 passes through the lifting threaded hole on the servo base 8, and its end passes through the lifting threaded hole and rests against the welding pad 9. The welding pad 9 is placed on top of the servo base 8. By tightening the vertical adjustment bolt 11, the servo base 8 generates an upward supporting force, thereby achieving vertical adjustment.

[0045] Based on the design of the aforementioned specialized tools, this embodiment also provides a method for installing a ship's rotary steering gear, which includes the following steps:

[0046] 1. Once the rudder stock 7 has been installed into the lower rudder bearing 4, the hydraulic installation of the rudder stock 7 and the rudder blade 1 is complete. Figure 1 As shown.

[0047] 2. By using a plumb bob at the front and rear centerline marks at the lower end of rudder blade 1, adjust the center of rudder blade 1 to coincide with or be parallel to the centerline of the hull. At this time, the angle of rudder blade 1 is zero degrees.

[0048] 3. Align the zero position markings of servo motor 17 and rudder stick 7, and perform hydraulic installation of servo motor 17 rotor and rudder stick 7.

[0049] Fourth, by installing a three-part positioning ring 6 on the sealing seat 5 of the lower rudder bearing seat 4 and measuring and adjusting the gap between the rudder stock copper sleeve 3 and the lower end E of the lower rudder bearing 2, the center line of the rudder stock 7 is ensured to be concentric with the theoretical center line of the lower rudder bearing 2 and the rudder system.

[0050] 5. Use jacks and straps to secure the rudder blade 1 and the rudder stick 7.

[0051] 6. Weld the horizontal adjustment assembly 12 onto the servo base 10. Use the horizontal adjustment assembly 14 and the vertical adjustment bolt 11 to adjust the gaps between the stator and rotor of the servo 17 at the front C, rear D, left A, and right B to be equal (error controlled within 0.05) and the height difference to be equal (error controlled within 0.05).

[0052] 7. Temporarily fix servo motor 17 and then install servo motor 17, such as... Figure 8 As shown. Servo installation includes the following specific steps:

[0053] (1) The servo motor 17 adjusting shim is fitted, and the contact surface should be 25.4 x 25.4 mm. 2 There should be no fewer than three points within the area, with a gap requirement that a 0.05mm feeler gauge can be inserted no more than 10mm, and a 0.1mm feeler gauge cannot be inserted at all.

[0054] (2) Drill holes in the servo motor 17 gasket and ream the servo motor 17. Process the reaming bolt according to the size of each reaming hole and the fit tolerance between the reaming hole and the reaming bolt.

[0055] (3) Select the installation method of the reamed bolt according to the actual fit between the reamed hole and the reamed bolt. For clearance fit, the bolt can be installed directly. For interference fit, the reamed bolt needs to be frozen with dry ice or liquid nitrogen before installation. After the reamed bolt is installed, it should be tightened. If the reamed bolt has been frozen, it needs to be placed for 24 hours after installation before tightening.

[0056] (4) Install the thrust block of servo motor 17. The contact area between the wedge block and servo motor base 8 and the wedge block and the support plate should not be less than 60%. The gap should be such that a 0.05mm feeler gauge can be inserted no more than 10mm and a 0.1mm feeler gauge cannot be inserted.

[0057] 8. After the servo motor 17 is installed, remove the three-part positioning ring 6, the horizontal adjustment component 14, and the vertical adjustment bolt 11.

[0058] Although the above embodiments have provided a detailed description of the present invention, it should be understood by those skilled in the art that modifications or improvements can be made based on the disclosure of the present invention without departing from the spirit and scope of the invention, and such modifications and improvements are all within the spirit and scope of the present invention.

Claims

1. A method for installing a ship's rotary steering gear, characterized in that, The installation method includes the following steps: First, install the rudder stock (7) into the lower rudder bearing (4), and the rudder stock (7) and rudder blade (1) are hydraulically installed; The second step is to adjust the center of the rudder (1) to coincide with or be parallel to the center line of the ship by using a plumb bob at the front and rear center line marks at the lower end of the rudder (1). At this time, the angle of the rudder (1) is zero. The third step is to align the zero position of the servo motor (17) with the zero position mark line of the rudder stick (7) and perform hydraulic installation on the servo motor (17) and the rudder stick (7). The fourth step is to install a special three-part positioning ring (6) on the lower rudder bearing sealing seat (5) at the lower rudder bearing seat (4), and measure and adjust the gap between the rudder rod copper sleeve (3) and the lower end of the lower rudder bearing (2) to ensure that the center line of the rudder rod (7) is concentric with the center line of the lower rudder bearing (2) and the theoretical center line of the rudder system; the three-part positioning ring (6) is provided with a round hole in the middle, the inner diameter of which is slightly larger than the outer diameter of the rudder rod (7), and a raised annular ring is provided on the outer circle of the round hole, the outer diameter of which is equal to the inner diameter of the lower rudder bearing sealing seat (5); the three-part positioning ring (6) is integrally machined and equally cut into three parts, and multiple through threaded holes and through holes are evenly distributed on the outer side of the annular ring. The through threaded holes are provided with lifting bolts, and the size, arrangement and number of the through holes are consistent with the mounting holes of the upper cover plate of the lower rudder bearing sealing seat (5); Fifth step, use jacks and straps to secure the rudder blade (1) and rudder stick (7); Step 6: Weld the horizontal adjustment assembly (12) onto the servo base (10), and use the horizontal adjustment assembly (12) and the vertical adjustment bolt (11) to adjust the front, rear, left and right clearances and heights of the servo stator and rotor of the servo (17) to be equal. Step 7: Temporarily fix the servo (17) and then install the servo (17); Step 8: After the servo motor (17) is installed, remove the three-part positioning ring (6), the horizontal adjustment assembly (12), and the vertical adjustment bolt (11); the installation of the servo motor includes the following specific steps: S61, Servo adjustment shims fit properly; contact surface required: 25.4×25.4mm. 2 There should be no fewer than three points within the area, and the gap should be such that a 0.05mm feeler gauge can be inserted no more than 10mm, and a 0.1mm feeler gauge cannot be inserted at all; S62. Drill holes for the servo gaskets and ream holes for the servo. Machin the reaming bolts according to the size of each reaming hole and the fit tolerance between the reaming hole and the reaming bolt. S63. Based on the actual fit between the reamed hole and the reamed bolt, select the installation method of the reamed bolt: for clearance fit, the bolt can be installed directly; for interference fit, the reamed bolt needs to be frozen with dry ice or liquid nitrogen before installation. After the reamed bolt is installed, it should be tightened. If the reamed bolt has been frozen, it needs to be left for 24 hours after installation before tightening. S64. Install the servo thrust block, where the contact area between the wedge block and the servo base, and between the wedge block and the support plate, should not be less than 60%, and the gap should be such that a 0.05mm feeler gauge can be inserted no more than 10mm, and a 0.1mm feeler gauge cannot be inserted.

2. The method for installing a ship's rotary steering gear according to claim 1, characterized in that, The horizontal adjustment assembly (12) includes a vertical plate (14), a liner plate (15), and an adjustment bolt (13). Two parallel liners (15) are vertically welded to the vertical plate (14). A bolt hole is provided in the middle of the vertical plate (14), and the adjustment bolt (13) is screwed into the bolt hole of the vertical plate (14).

3. The installation method of a ship's rotary steering gear according to claim 1, characterized in that, The vertical adjustment bolt (11) is a fully threaded bolt, and the diameter and pitch of the fully threaded bolt are consistent with the lifting threaded hole on the servo base (8).

Images