Steering engine installation and steering engine installation precision improving method

Abstract

The invention provides a steering engine installation method and a steering engine installation precision improving method, and the method at least comprises the following steps: setting a base matched with a steering engine according to the size of the bottom of the steering engine; a cross reference line for installing the steering engine base is determined; the steering engine base is installed according to the cross reference line; the rudder blade and the rudder bearing are installed on the base; a rudder blade, a tiller and a rudderstock are assembled according to the zero reference position; by adjusting the assembly positions of the rudder blade, the tiller and the rudderstock, the deviation between the assembly positions of the rudder blade, the tiller and the rudderstock and the reference position is within the preset range, simple, rapid and effective installation can be achieved, the installation precision of the steering engine can be improved, the work of increasing reinforcement on the reverse side of the steering engine base can be reduced or eradicated, and therefore the aim of saving time and labor is achieved.

Description

Technical Field

[0001] The present invention relates to the field of steering gear installation, and in particular to a method for installing a steering gear and improving the steering gear installation accuracy. Background Art

[0002] The rudder system is a very important system on a ship, which mainly consists of rudder blades, rudder stock, rudder bearing, tiller and steering gear, and is used to control the direction of the ship's navigation. Therefore, the installation of the entire rudder system needs to be strictly controlled to ensure the subsequent navigation safety of the ship.

[0003] The current method is limited by the influence of structural accuracy and the influence of the 0-position line accuracy of the machining of the rudder stock, rudder blade and tiller handle. Generally, the servo base will not be installed exactly at the designed position, and there will usually be a deviation of 30-40mm, which will cause the base rib plate to be unable to be aligned with the back of the structure, thus bringing about the work of strengthening and increasing. Since the strengthening and increasing involves the empty compartment on the back of the servo base, the construction space is limited and the construction is difficult. This work often takes 15-20 days to complete. If the deviation is serious, it may even take a month to strengthen the work. This seriously affects the installation progress of the rudder system, resulting in the subsequent delay of debugging and affecting the overall construction cycle. At the same time, this solution cannot realize the early installation of the servo base, resulting in the inability to complete the servo installation work before the ship is launched, resulting in the need to weld additional rudder system fixing devices to prevent the rudder system from rotating when the ship is launched, which will also bring about additional work and waste of materials.

[0004] In summary, in the current ship rudder system installation process, there is a lack of a simple, fast and effective method to achieve the pre-installation of the rudder base, while improving the installation accuracy of the rudder, reducing or eliminating the work of adding reinforcement on the back of the rudder base, so as to achieve the goal of saving time and effort. Summary of the invention

[0005] The present application provides a method for installing a servo and improving the installation accuracy of the servo, which can be installed simply, quickly and effectively, and can improve the installation accuracy of the servo, reduce or eliminate the work of adding reinforcement to the back side of the servo base, thereby achieving the goal of saving time and effort.

[0006] The present application provides a method for improving the installation accuracy of a steering gear, wherein the steering gear comprises a base, a rudder blade, a shaft rudder system and a rudder bearing, and comprises at least the following steps: setting a base matching the steering gear according to the size of the bottom of the steering gear; determining a cross reference line for installing the steering gear base; installing the steering gear base according to the cross reference line; installing the rudder blade and the rudder bearing on the base; assembling the rudder blade, the rudder handle and the rudder stock according to a zero reference position; adjusting the assembly position of the rudder blade, the rudder handle and the rudder stock so that the deviation between the assembly position of the rudder blade, the rudder handle and the rudder stock and the reference position is within a preset range.

[0007] In some optional embodiments, the step of setting a base matching the servo according to the size of the bottom of the servo includes: designing a base matching the servo according to the size of the servo foot; determining transverse and longitudinal ribs according to the force applied to the base, the position of the ribs and the minimum distance from the foot bolts after installation being no less than a preset range; and setting reverse reinforcement according to the position of the longitudinal and transverse ribs of the base.

[0008] In some optional embodiments, the step of determining the cross reference line for installing the servo base includes determining the rudder system center according to the marking lines or rudder holes around the rudder sleeve; and drawing cross lines along the ship length direction and perpendicular to the ship length direction on the hull according to the rudder system center.

[0009] In some optional embodiments, the step of installing the servo base according to the cross reference line includes: confirming that the positioning deviation of the base relative to the cross reference line does not exceed 5 mm based on the alignment of the transverse and longitudinal ribs with the reverse reinforcement.

[0010] In some optional embodiments, the step of assembling the rudder blade, the tiller handle and the rudder stock according to the zero reference position includes: confirming and pressing the zero reference position of the tiller handle; confirming and pressing the zero reference position of the tiller handle when the rudder blade is in the zero reference position, and aligning the tiller handle and the rudder stock with the zero reference position; checking the deviation between the center of the front and rear forks of the tiller handle and the length direction mark line on the deck surface, and confirming that the deviation does not exceed 3mm, otherwise, rotating the tiller handle so that the deviation is less than 3mm; and reconfirming the zero reference position of the rudder stock and the tiller handle.

[0011] In some optional embodiments, the size of the base panel is confirmed, and the side dimensions of the base panel are at least 15 mm larger than the required size; according to the positions of the base bolt holes and the base installation position, the transverse and longitudinal ribs are confirmed, so that the hexagonal distance between the ribs and the base bolts after installation is greater than or equal to 15 mm; according to the final determined position of the base ribs, the reinforcement of the reverse side of the structure is determined; the base is manufactured according to the design drawings, and the base bolt holes are not drilled during the base manufacturing stage; and the reverse side reinforcement of the base installation position is made in advance according to the design drawings.

[0012] In some optional embodiments, the center of the rudder hole is found according to the front, back, left, and right marking lines on the rudder sleeve or the existing rudder hole; cross reference lines are drawn on the hull structure along the ship length direction and perpendicular to the ship length direction through the center of the rudder hole according to the hull structure; and sample punch marks are made on the drawn cross reference lines.

[0013] In some optional embodiments, before installing the base, determine the reverse structural reinforcement of the base and determine the reference mark; align the base ribs and place the corresponding reinforcements in place; measure the distance of the base relative to the cross reference line to determine that the deviation does not exceed 5 mm, otherwise, adjust the base position to a deviation of less than 5 mm, and the deviation between the base ribs and the reverse reinforcement is less than 0.5 times the thickness of the reinforcement plate; and complete the base welding work.

[0014] In some optional embodiments, the rudder blade is rotated to the zero reference position of the rudder blade; the tiller is hoisted and installed on the rudder stock, and the tiller is rotated to align the zero reference positions of the tiller and the rudder stock; a scale is placed at the position of the fork of the fork at the bow end of the rudder handle away from the center of the rudder stock, and the center of the fork is confirmed according to the scale; a plumb bob is used to check the deviation between the center position of the fork and the deck surface mark line, recorded as d1, and it is confirmed that the plumb bob is recorded as a positive value on the left side of the deck surface mark line, and it is confirmed that the plumb bob is recorded as a negative value on the right side of the deck surface mark line; the distance between the center of the stern fork and the ground mark line is measured, recorded as d2; the average value of d1 and d2 is calculated, d The average value of d1 and d2 is the overall parallel deviation d of the tiller relative to the center line of the rudder system. The overall parallel deviation d is eliminated after the rudder stock is naturally located at the center of the rudder system after the ship is launched. The absolute value of the obtained value is the circumferential deviation D of the tiller, and the circumferential deviation D is required to be no more than 3mm. When it is confirmed that the circumferential deviation D does not exceed 3mm, the press-fitting work of the tiller is completed directly. When the circumferential deviation D of the press-fitting work of the tiller exceeds 3mm, the tiller needs to be rotated to adjust the deviation to less than 3mm, the zero reference position of the rudder stock and the tiller needs to be re-established, and the press-fitting work of the tiller is completed.

[0015] In some optional embodiments, the steps of adjusting the assembly positions of the rudder blade, the tiller handle and the rudder stock so that the deviations of the assembly positions of the rudder blade, the tiller handle and the rudder stock from the reference position are within a preset range, keeping the rudder blade at the zero reference position; adjusting the operation of the servo according to the zero reference position; setting base bolt holes on the base according to the position of the servo; completing the servo gasket fitting or epoxy pouring work; installing the base bolts to complete the final installation of the servo.

[0016] Compared with the prior art, this application has the following technical effects:

[0017] The present application provides a method for installing a steering gear and improving the installation accuracy of the steering gear, comprising at least the following steps: setting a base matching the steering gear according to the size of the bottom of the steering gear; determining a cross reference line for installing the steering gear base; installing the steering gear base according to the cross reference line; installing the rudder blade and the rudder bearing on the base; assembling the rudder blade, the tiller and the rudder stock according to a zero reference position; adjusting the assembly position of the rudder blade, the tiller and the rudder stock so that the deviation between the assembly position of the rudder blade, the tiller and the rudder stock and the reference position is within a preset range, so that the installation can be simple, fast and effective, and the installation accuracy of the steering gear can be improved, and the work of adding reinforcement on the back side of the steering gear base can be reduced or eliminated, thereby achieving the goal of saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 This is an operation flow chart of the method for pre-installing a ship steering gear base and improving the steering gear installation accuracy of the present invention;

[0020] Figure 2 A schematic diagram of the arrangement of the steering gear for pre-installing the ship steering gear base and improving the installation accuracy of the steering gear according to the present invention;

[0021] Figure 3 A schematic diagram of the cross lines on the deck surface in the method for pre-installing the ship steering gear base and improving the steering gear installation accuracy of the present invention;

[0022] Figure 4 This is a schematic diagram of the deviation of the pendulum in the method for pre-installing a ship steering gear base and improving the steering gear installation accuracy of the present invention.

[0023] in, Figures 1 to 4 The corresponding relationship between the reference numerals and component names is as follows:

[0024] 1- base; 2- servo; 3- rudder bearing; 4- rudder stock; 5- tiller handle; 7- cross reference line; 8- plumb bob. DETAILED DESCRIPTION

[0025] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0027] The rudder system is a very important system on a ship, which mainly consists of a rudder blade, a rudder stock, a rudder bearing, a tiller and a steering gear, and is used to control the direction of the ship's navigation. Therefore, the installation of the entire rudder system needs to be strictly controlled to ensure the subsequent navigation safety of the ship.

[0028] The currently used method is limited by the influence of structural accuracy and the influence of the machining line accuracy of the rudder bar 4, rudder blade and tiller handle 5. Generally, the steering gear base 1 will not be installed exactly in the designed position, and there will usually be a deviation of 30-40mm, which will cause the base rib plate to be unable to be aligned with the back of the structure, thus bringing about the work of strengthening and increasing. Since the strengthening and increasing involves the empty cabin on the back of the base 1, the construction space is limited and the construction difficulty is large. This work often takes 15-20 days to complete, and it may even take a month to strengthen the work if the deviation is serious. This seriously affects the installation progress of the rudder system, brings about the subsequent delay of debugging, and affects the overall construction cycle. At the same time, this solution cannot realize the early installation of the base 1, resulting in the inability to complete the installation of the steering gear 2 before the ship is launched, resulting in the need to weld additional rudder system fixing devices to prevent the rudder system from rotating when the ship is launched, which will also bring about extra work and waste of materials.

[0029] In summary, in the current ship rudder system installation process, there is a lack of a simple, fast and effective method to achieve pre-installation of the base 1, while improving the installation accuracy of the steering gear 2, reducing or eliminating the work of adding reinforcement on the back side of the base 1, thereby achieving the goal of saving time and effort.

[0030] The present application provides a method for installing a steering gear and improving the installation accuracy of the steering gear, comprising at least the following steps: setting a base 1 matching the steering gear 2 according to the size of the bottom of the steering gear 2; determining a cross reference line 6 for installing the base 1; installing the base 1 according to the cross reference line 6; installing the rudder blade and the rudder bearing 3 on the base 1; assembling the rudder blade, the tiller handle 5 and the rudder stock 4 according to a zero reference position; adjusting the assembly position of the rudder blade, the tiller handle 5 and the rudder stock 4 so that the deviation between the assembly position of the rudder blade, the tiller handle 5 and the rudder stock 4 and the reference position is within a preset range.

[0031] In some optional embodiments, the step of setting a base matching the servo 2 according to the size of the bottom of the servo 2 includes: designing a base 1 matching the servo 2 according to the size of the bottom foot of the servo 2; determining transverse and longitudinal ribs according to the force applied to the base 1, wherein the position of the ribs and the minimum distance from the bottom foot bolts after installation are not less than a preset range; and setting reverse reinforcement according to the position of the longitudinal and transverse ribs of the base 1.

[0032] Specifically, a base 1 matching the foot of the steering gear 2 is designed according to the size thereof; transverse and longitudinal ribs are determined according to the force of the base 1, and the minimum distance between the position of the ribs and the foot bolts after installation is not less than a preset range; reverse reinforcement is set according to the longitudinal and transverse ribs of the base 1; a cross reference line 6 for installing the steering gear base 1 is determined; the steering gear base 1 is installed according to the cross reference line 6; the rudder blade and the rudder bearing 3 are installed on the base 1; the rudder blade, the tiller 5 and the rudder stock 4 are assembled according to the zero reference position; the assembly positions of the rudder blade, the tiller 5 and the rudder stock 4 are adjusted so that the deviation between the assembly positions of the rudder blade, the tiller 5 and the rudder stock 4 and the reference position is within a preset range. The assembly positions of the rudder blade, the tiller 5 and the rudder stock 4 are adjusted so that the deviation between the assembly positions of the rudder blade, the tiller 5 and the rudder stock 4 and the reference position is within 15 mm. Confirm the size of the panel of base 1, and the side dimensions of each side dimension of the panel of base 1 are at least 15mm larger than the required size; confirm the transverse and longitudinal ribs according to the positions of the bolt holes of base 1 and the installation position of base 1, so that the hexagonal distance between the ribs and the base bolts after installation is greater than or equal to 15mm; determine the reinforcement of the reverse side of the structure according to the final determined position of the ribs of base 1; produce and manufacture base 1 according to the design drawings, and the base bolt holes are not drilled during the manufacturing stage of base 1; and make the reverse side reinforcement of the installation position of base 1 in advance according to the design drawings.

[0033] In some optional embodiments, the step of determining the cross reference line 6 for installing the steering gear base 1 includes determining the rudder system center according to the marking lines or rudder holes around the rudder sleeve; and drawing cross lines along the ship length direction and perpendicular to the ship length direction on the hull according to the rudder system center.

[0034] Specifically, a base 1 matching the foot of the steering gear 2 is designed according to the size thereof; transverse and longitudinal ribs are determined according to the force on the base 1, and the position of the ribs is not less than a preset range from the minimum distance between the foot bolts after installation; reverse reinforcement is arranged according to the position of the longitudinal and transverse ribs of the base 1; the center of the rudder system is determined according to the marking lines or rudder holes around the rudder sleeve; a cross line is drawn on the hull along the length direction and perpendicular to the length direction according to the center of the rudder system; the steering gear base 1 is installed according to the cross reference line 6; the rudder blade and the rudder bearing 3 are installed on the base 1; the rudder blade, the tiller handle 5 and the rudder stock 4 are assembled according to the zero reference position; the assembly position of the rudder blade, the tiller handle 5 and the rudder stock 4 is adjusted so that the deviation between the assembly position of the rudder blade, the tiller handle 5 and the rudder stock 4 and the reference position is within a preset range.

[0035] In some optional embodiments, the step of installing the servo base 1 according to the cross reference line 6 includes: confirming that the positioning deviation of the base 1 relative to the cross reference line 6 does not exceed 5 mm based on the alignment of the transverse and longitudinal ribs with the reverse reinforcement.

[0036] Specifically, a base 1 matching the foot of the servo engine 2 is designed according to the size thereof; transverse and longitudinal ribs are determined according to the force on the base 1, and the position of the ribs and the minimum distance between the foot bolts after installation shall not be less than a preset range; reverse reinforcements are arranged according to the positions of the longitudinal and transverse ribs of the base 1; the center of the rudder system is determined according to the marking lines or rudder holes around the rudder sleeve; according to the alignment of the transverse and longitudinal ribs with the reverse reinforcements, it is confirmed that the positioning deviation of the base 1 relative to the cross reference line 6 does not exceed 5 mm; the servo engine base 1 is installed according to the cross reference line 6; the rudder blade and the rudder bearing 3 are installed on the base 1; the rudder blade, the tiller handle 5 and the rudder stock 4 are assembled according to the zero reference position; the assembly positions of the rudder blade, the tiller handle 5 and the rudder stock 4 are adjusted so that the deviations of the assembly positions of the rudder blade, the tiller handle 5 and the rudder stock 4 from the reference position are within a preset range.

[0037] In some optional embodiments, the steps of assembling the rudder blade, the tiller handle 5 and the rudder stock 4 according to the zero reference position include: confirming and pressing the installation zero reference position of the tiller handle 5; confirming and pressing the installation zero reference position of the tiller handle 5 under the condition that the rudder blade is in the zero reference position, and aligning the tiller handle 5 and the rudder stock 4 with the zero reference position; checking the deviation between the center of the front and rear forks of the tiller handle 5 and the length direction marking line of the deck surface, and confirming that the deviation does not exceed 3mm, otherwise, rotating the tiller handle 5 so that the deviation is less than 3mm; and reconfirming the zero reference position of the rudder stock 4 and the tiller handle 5.

[0038] Specifically, a base 1 matching the foot of the steering gear 2 is designed according to the size thereof; the transverse and longitudinal ribs are determined according to the force of the base 1, and the minimum distance between the position of the ribs and the foot bolts after installation is not less than a preset range; the reverse reinforcement is arranged according to the position of the longitudinal and transverse ribs of the base 1; the center of the rudder system is determined according to the marking lines or rudder holes around the rudder sleeve; according to the alignment of the transverse and longitudinal ribs with the reverse reinforcement, it is confirmed that the positioning deviation of the base 1 relative to the cross reference line 6 does not exceed 5 mm; the steering gear base 1 is installed according to the cross reference line 6; the rudder blade and the rudder bearing 3 are installed on The base 1 and the tiller handle 5 are installed at the zero reference position and are press-fitted; when the rudder blade is at the zero reference position, the zero reference position of the tiller handle 5 is confirmed and press-fitted, and the tiller handle 5 and the rudder stock 4 are aligned at the zero reference position; the deviation between the center of the front and rear forks of the tiller handle 5 and the length direction mark line on the deck surface is checked to confirm that the deviation does not exceed 3mm, otherwise, the tiller handle 5 is rotated so that the deviation is less than 3mm; the zero reference position of the rudder stock and the tiller handle 5 is reconfirmed; the assembly position of the rudder blade, the tiller handle 5 and the rudder stock 4 is adjusted so that the deviation between the assembly position of the rudder blade, the tiller handle 5 and the rudder stock 4 and the reference position is within a preset range.

[0039] In some optional embodiments, the size of the base 1 panel is confirmed, and the side dimensions of the base 1 panel are at least 15 mm larger than the required size; according to the position of the base bolt holes and the base installation position, the transverse and longitudinal ribs are confirmed, so that the hexagonal distance between the ribs and the base bolts after installation is greater than or equal to 15 mm; according to the final determined position of the base ribs, the reinforcement of the reverse side of the structure is determined; the base is manufactured according to the design drawings, and the base bolt holes are not drilled during the base manufacturing stage; and the reverse side reinforcement of the base installation position is made in advance according to the design drawings.

[0040] Specifically, a base 1 matching the foot of the servo 2 is designed according to the size of the servo 2; transverse and longitudinal ribs are determined according to the force on the base 1, and the position of the ribs is not less than a preset range from the minimum distance after the foot bolts are installed; reverse reinforcements are set according to the positions of the longitudinal and transverse ribs of the base 1, and further, the size of the panel of the base 1 is confirmed, and the side dimensions of the panel of the base 1 are at least 15 mm larger than the required size; transverse and longitudinal ribs are confirmed according to the positions of the base bolt holes and the base installation position, so that the hexagonal distance between the ribs and the foot bolts after installation is greater than or equal to 15 mm; according to the final position of the base ribs, the reinforcement of the reverse side of the structure is determined; the base 1 is produced and manufactured according to the design drawings, and the foot bolt holes are not drilled during the manufacturing stage of the base 1; the reverse reinforcement of the installation position of the base 1 is made in advance according to the design drawings. Determine the center of the rudder system according to the marking lines or rudder holes around the rudder sleeve; confirm that the positioning deviation of the base 1 relative to the cross reference line 6 does not exceed 5mm according to the alignment of the transverse and longitudinal ribs and the reverse reinforcement; install the steering gear base 1 according to the cross reference line 6; install the rudder blade and the rudder bearing 3 on the base 1, and confirm and press-fit the zero reference position of the tiller 5; under the condition that the rudder blade is in the zero reference position, confirm and press-fit the zero reference position of the tiller 5, and align the tiller 5 and the rudder stock 4 with the zero reference position; check the deviation between the front and rear fork centers of the tiller 5 and the length direction marking line on the deck surface, and confirm that the deviation does not exceed 3mm, otherwise, rotate the tiller 5 so that the deviation is less than 3mm; reconfirm the zero reference position of the rudder stock and the tiller 5; adjust the assembly position of the rudder blade, the tiller 5 and the rudder stock 4 so that the deviation between the assembly position of the rudder blade, the tiller 5 and the rudder stock 4 and the reference position is within a preset range.

[0041] In some optional embodiments, the center of the rudder hole is found according to the front, back, left, and right marking lines on the rudder sleeve or the existing rudder hole; cross reference lines are drawn on the hull structure along the ship length direction and perpendicular to the ship length direction through the center of the rudder hole according to the hull structure; and sample punch marks are made on the drawn cross reference lines 7.

[0042] Specifically, the base 1 is designed to match the size of the foot of the servo 2; the transverse and longitudinal ribs are determined according to the force of the base 1, and the position of the ribs is not less than the preset range after the minimum distance between the base bolts and the base bolts is installed; the reverse reinforcement is set according to the position of the longitudinal and transverse ribs of the base 1, and further, the size of the base 1 panel is confirmed, and the side dimensions of the base 1 panel are at least 15mm larger than the required size; the transverse and longitudinal ribs are confirmed according to the position of the base bolt holes and the installation position of the base 1, so that the hexagonal distance between the ribs and the base bolts after installation is greater than or equal to 15mm; the reinforcement of the reverse side of the structure is determined according to the final position of the ribs of the base 1. The base 1 is manufactured according to the design drawings, and the base bolt holes are not drilled during the manufacturing stage of the base 1; the reverse reinforcement of the installation position of the base 1 is made in advance according to the design drawings. Determine the center of the rudder system according to the marking lines or rudder holes around the rudder sleeve; confirm that the positioning deviation of the base 1 relative to the cross reference line 7 does not exceed 5mm according to the alignment of the transverse and longitudinal ribs and the reverse reinforcement; install the steering gear base 1 according to the cross reference line 7; install the rudder blade and the rudder bearing 3 on the base 1, and confirm and press-fit the zero reference position of the tiller 5; under the condition that the rudder blade is in the zero reference position, confirm and press-fit the zero reference position of the tiller 5, and align the tiller 5 and the rudder stock 4 with the zero reference position; check the deviation between the front and rear fork centers of the tiller 5 and the length direction marking line on the deck surface, and confirm that the deviation does not exceed 3mm, otherwise, rotate the tiller 5 so that the deviation is less than 3mm; reconfirm the zero reference position of the rudder stock and the tiller 5; adjust the assembly position of the rudder blade, the tiller 5 and the rudder stock 4 so that the deviation between the assembly position of the rudder blade, the tiller 5 and the rudder stock 4 and the reference position is within a preset range.

[0043] In some optional embodiments, before installing the base 1, determine the back structural reinforcement of the base 1 and determine the reference mark; align the ribs of the base 1 and place the corresponding reinforcement in place; measure the distance of the base 1 relative to the cross reference line 7 to determine that the deviation does not exceed 5 mm, otherwise, adjust the position of the base 1 to a deviation of less than 5 mm, and the deviation between the base ribs and the back reinforcement is less than 0.5 times the thickness of the reinforcement plate; and complete the welding work of the base 1.

[0044] In some optional embodiments, the rudder blade is rotated to the zero reference position of the rudder blade; the tiller handle 5 is hoisted and installed on the rudder stock 4, and the tiller handle 5 is rotated to align the zero reference positions of the tiller handle 5 and the rudder stock 4; a ruler is placed at the position of the fork of the bow end of the tiller handle 5 away from the center of the rudder stock 4, and the center of the fork is confirmed according to the ruler; a plumb bob 8 is used to check the deviation between the center position of the fork and the deck surface mark line, recorded as d1, and it is confirmed that the plumb bob 8 is recorded as a positive value on the left side of the deck surface mark line, and it is confirmed that the plumb bob 8 is recorded as a negative value on the right side of the deck surface mark line; the distance between the center of the stern fork and the ground mark line is measured, recorded as d2; the average value of d1 and d2 is calculated, The average value of d1 and d2 is the overall parallel deviation d of the tiller handle 5 relative to the center line of the rudder system, and the overall parallel deviation d is eliminated after the rudder stock 4 is naturally located at the center of the rudder system after the ship is launched; the absolute value of the obtained value is deducted from the overall deviation d from d1 and d2 respectively, and the circumferential deviation D is required to be no more than 3mm; when it is confirmed that the circumferential deviation D does not exceed 3mm, the press-fitting work of the tiller handle 5 is directly completed; when the circumferential deviation D of the press-fitting work of the tiller handle 5 exceeds 3mm, the tiller handle 5 needs to be rotated to adjust the deviation to less than 3mm, the zero point reference position of the rudder stock 4 and the tiller handle 5 is re-made, and the press-fitting work of the tiller handle 5 is completed.

[0045] In some optional embodiments, the assembly positions of the rudder blade, the tiller handle 5 and the rudder stock 4 are adjusted so that the deviations of the assembly positions of the rudder blade, the tiller handle 5 and the rudder stock 4 from the reference position are within a preset range, and the rudder blade is kept at the zero reference position; the operation of the servo 2 is adjusted according to the zero reference position; base bolt holes are set on the base 1 according to the position of the servo 2; the gasket fitting or epoxy pouring of the servo 2 is completed; and the base bolts are installed to complete the final installation of the servo 2.

[0046] In the present invention, the term "plurality" means at least two or more than two, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0047] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0048] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for improving the installation accuracy of a steering gear, characterized in that: It includes at least the following steps: A base matching the steering gear is provided according to the size of the bottom of the steering gear; Determine a cross reference line for installing the servo base; Install the servo base according to the cross reference line; Installing the rudder blade and the rudder bearing on the base; Assembling the rudder blade, the tiller and the rudder stock according to the zero reference position; The assembly positions of the rudder blade, the tiller handle and the rudder stock are adjusted so that the deviations of the assembly positions of the rudder blade, the tiller handle and the rudder stock from the reference positions are within a preset range.

2. The method for improving the installation accuracy of a steering gear according to claim 1, characterized in that: The step of setting a base matching the steering gear according to the size of the bottom of the steering gear comprises: Design a base that matches the size of the servo foot; Determine the transverse and longitudinal ribs according to the force of the base, and the minimum distance between the position of the ribs and the base bolts after installation shall not be less than a preset range; The reverse reinforcement is set according to the position of the longitudinal and transverse ribs of the base.

3. The method for improving the installation accuracy of a steering gear according to claim 1, characterized in that: The step of determining the cross reference line for installing the steering engine base comprises: Determine the center of the rudder system according to the marking lines around the rudder sleeve or the rudder hole; Draw cross lines along the length direction and perpendicular to the length direction on the hull according to the center of the rudder system.

4. The method for improving the installation accuracy of a steering gear according to claim 1, characterized in that: The step of installing the servo base according to the cross reference line includes: confirming that the positioning deviation of the base relative to the cross reference line does not exceed 5 mm according to the alignment of the transverse and longitudinal ribs with the reverse reinforcement.

5. The method for improving the installation accuracy of a steering gear according to claim 2, characterized in that: The step of assembling the rudder blade, the tiller and the rudder stock according to the zero reference position comprises: Confirmation and press-fitting of the zero reference position of the tiller installation; When the rudder blade is at the zero reference position, confirm and press fit the zero reference position of the tiller, and align the tiller and rudder stock to the zero reference position; Check the deviation between the center of the front and rear forks of the tiller and the length direction mark on the deck surface, and confirm that the deviation does not exceed 3mm. Otherwise, turn the tiller to make the deviation less than 3mm. Reconfirm the zero reference position of the rudder stock and tiller handle.

6. The method for improving the installation accuracy of a steering gear according to claim 2, characterized in that: Confirm the size of the base panel, the side dimensions of the base panel are at least 15 mm larger than the required size; According to the position of the base bolt holes and the base installation position, confirm the horizontal and vertical ribs so that the hexagonal distance between the ribs and the base bolts after installation is greater than or equal to 15mm; According to the final determined position of the base rib, determine the reinforcement of the reverse side of the structure; The base is manufactured according to the design drawings, and the base bolt holes are not drilled during the base manufacturing stage; Make reinforcement on the reverse side of the base installation location in advance according to the design drawings.

7. The method for improving the installation accuracy of a steering gear according to claim 3, characterized in that: Find the center of the rudder hole according to the front, back, left, and right markings on the rudder sleeve or the existing rudder hole; According to the hull structure, draw cross reference lines along the ship length direction and perpendicular to the ship length direction on the hull structure through the center of the rudder hole; make sample punch marks on the drawn cross reference lines.

8. The method for improving the installation accuracy of a steering gear according to claim 4, characterized in that: Before installing the base, determine the reverse structural reinforcement of the base and determine the reference mark; align the base ribs and place the corresponding reinforcement in place; measure the distance of the base relative to the cross reference line to determine that the deviation does not exceed 5mm, otherwise, adjust the base position to a deviation of less than 5mm, and the deviation between the base ribs and the reverse reinforcement is less than 0.5 times the thickness of the reinforcement plate; complete the base welding work.

9. The method for improving the installation accuracy of a steering gear according to claim 5, characterized in that: Rotate the rudder blade to its zero reference position; hoist the tiller and install it on the rudder stock, rotate the tiller to align the zero reference positions of the tiller and the rudder stock; place a scale at the position of the fork at the bow of the tiller away from the center of the rudder stock, and confirm the center of the fork according to the scale; use a plumb bob to check the deviation between the center of the fork and the deck surface mark line, recorded as d1, confirm that the plumb bob is on the left side of the deck surface mark line as a positive value, and confirm that the plumb bob is on the right side of the deck surface mark line as a negative value; measure the distance between the center of the stern fork and the ground mark line, recorded as d2; calculate the average value of d1 and d2, and the difference between d1 and d2 The average value is the overall parallel deviation d of the tiller relative to the center line of the rudder system. The overall parallel deviation d is eliminated after the rudder stock is naturally in the center of the rudder system after the ship is launched. The absolute value of the obtained value is the circumferential deviation D of the tiller, and the circumferential deviation D is required to be no more than 3mm. When it is confirmed that the circumferential deviation D does not exceed 3mm, the press-fitting work of the tiller is completed directly. When the circumferential deviation D of the press-fitting work of the tiller exceeds 3mm, the tiller needs to be rotated to adjust the deviation to less than 3mm, the zero reference position of the rudder stock and the tiller needs to be re-established, and the press-fitting work of the tiller is completed.

10. The method for improving the installation accuracy of a steering gear according to claim 1, characterized in that: The steps of adjusting the assembly positions of the rudder blade, the tiller and the rudder stock so that the deviations of the assembly positions of the rudder blade, the tiller and the rudder stock from the reference positions are within a preset range, and keeping the rudder blade at the zero reference position; adjusting the operation of the steering gear according to the zero reference position; setting the base bolt holes on the base according to the position of the steering gear; completing the work of the steering gear gasket brushing or epoxy pouring; installing the base bolts to complete the final installation of the steering gear.

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