Zero adjustment method for ship rudderstock during dock stage installation

Abstract

The invention discloses a zero adjustment method for ship rudderstock installation in a dock stage, and the method specifically comprises the following steps: S1, installing a chain block in a steering engine room according to the spatial arrangement in the steering engine room; s2, an adjusting device is installed on the rudderstock, a chain block is connected with the adjusting device on the rudderstock, and then the rudderstock is hoisted into the rudder sleeve through a crane; s3, enabling the surface of a lower cone of the rudderstock to approach the surface of a rudder blade pinhole through a crane, adjusting the installation angle of the rudderstock through a chain block, and measuring the degree of an included angle between the rudderstock and the center line of a shaft system; and S4, after the adjustment of the angle of the rudderstock is completed, the rudderstock is descended and installed in the rudder sleeve through the crane. Adjustment is carried out through the chain blocks connected to the two sides of the nut, the angle of the rudderstock is adjusted by adjusting the lengths of chains of the chain blocks on the two sides, manpower is saved, meanwhile, sliding is prevented when the angle of the rudderstock is adjusted through the arrangement of the fixing module, and use safety is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of ship construction, and in particular relates to a method for zero position adjustment of a ship rudder stock when it is installed in a dock stage. Background Art

[0002] The rudder system is one of the most important equipment for ship operation. It is a special equipment used to maintain or change the direction of the ship's movement in the water. The direction of the ship's movement is changed by adjusting the angle of the rudder blade. The rotation of the rudder blade is indirectly adjusted by the rotation of the steering gear through the rudder stock connected to the rudder blade. The rudder stock plays an indispensable role in adjusting the direction of the ship. Therefore, the installation quality of the rudder system is the most critical factor in whether the ship can sail safely and stably at sea. Among them, the zero position matching of the rudder stock and the rudder blade determines the accuracy of the direction adjustment of the ship when sailing.

[0003] When installing the rudder system, when hoisting the rudder stock, use a crane to lift the rudder stock through the lifting ring on the top of the rudder stock, and then slowly hoist the rudder stock into the rudder stock tube along the center of the rudder sleeve. At this time, the rudder stock needs to be aligned with the center of the rudder hub. Because the precision requirements of the rudder stock are high, the rudder stock and the rudder blade are hoisted during the hoisting process. Because the zero position of the rudder blade is not parallel to the center line of the shaft system, but there is a 3° angle, so when the rudder stock is hoisted, the zero position of the rudder stock needs to be adjusted, so that the zero position of the left and right rudder blades finally forms an inner eight-shaped deflection of 3°. In the traditional rudder stock installation process, in order to adjust the zero position of the rudder stock, the rudder stock will be lifted, and then the rudder stock angle will be manually adjusted slowly, and then the rudder stock will be lowered. This process is generally repeated 2-3 times. The process is cumbersome, time-consuming and labor-intensive. Summary of the invention

[0004] The object of the present invention is to overcome the deficiencies in the above-mentioned prior art and to provide a method for zero-position adjustment of a ship's rudder stock when it is installed in the dock stage. The present invention performs adjustment through a hand chain hoist connected to both sides of the nut. The angle of the rudder stock is adjusted by adjusting the length of the hand chain hoist chains on both sides, thereby saving manpower. At the same time, the setting of a fixed module prevents sliding when adjusting the rudder stock angle, thereby improving safety of use.

[0005] In order to achieve the above invention purpose, the technical solution provided by the present invention is as follows:

[0006] A method for zero position adjustment of a ship rudder stock during installation in a dock phase, the method specifically comprising the following steps:

[0007] S1, install a hand chain hoist in the steering gear cabin according to the space layout in the steering gear cabin;

[0008] S2, install the adjustment device on the rudder stock, connect the hand chain hoist with the adjustment device on the rudder stock, and then hoist the rudder stock into the rudder sleeve by a crane;

[0009] S3, use a crane to bring the lower cone surface of the rudder stock close to the pinhole surface of the rudder blade, then use a hand chain hoist to adjust the installation angle of the rudder stock, and measure the angle between the rudder stock and the center line of the shaft system until the angle between the rudder stock and the center line of the shaft system meets the requirements;

[0010] S4, when the rudder stock angle adjustment is completed, the rudder stock is lowered by a crane and installed in the rudder sleeve.

[0011] Furthermore, the installation of the hand chain hoist in the steering gear cabin is specifically as follows: according to the layout in the side steering gear cabin, two oppositely arranged structural column positions in the steering gear cabin are selected, and the hand chain hoists are respectively installed on the structural columns.

[0012] Furthermore, the adjustment device includes a fixing module and an adjusting module, the fixing module includes a fixing plate, the fixing plate is semicircular as a whole, and fixing bolt holes are respectively provided at both ends of the fixing plate. The fixing plate is installed at the threaded part of the upper end of the rudder stock. When the fixing plate is installed, the fixing bolt holes at both ends of the fixing plate are aligned and the fixing plate is connected and fixed to the top of the rudder stock by bolts.

[0013] Furthermore, the adjustment module includes an adjustment plate, which is semicircular as a whole, and an adjustment ring is provided in the middle of the outer side of the adjustment plate. Fixing bolt holes are respectively provided at both ends of the adjustment plate, and the opening direction of the fixing bolt holes is perpendicular to the opening direction of the ring; when the adjustment plate is installed, the fixing bolt holes at both ends of the adjustment plate are aligned and the adjustment plate is connected and fixed to the top of the rudder stock by bolts, and the adjustment plate is installed at the lower end of the fixed plate.

[0014] Furthermore, the hand winches arranged in the side steering gear cabin are respectively connected to the lifting rings on the adjusting plate. The hand winches adjust the angle of the rudder stock as follows: when the crane lifts the rudder stock into the rudder sleeve, the rudder stock is tightened and lifted by the hand winch on one side of the rudder stock, and the hand winch on the other side of the rudder stock is lowered, so that the rudder stock zero position line rotates and forms an angle with the center line of the shaft system, thereby completing the adjustment of the rudder stock angle.

[0015] Based on the above technical solution, the method for zero position adjustment of a ship rudder stock during installation in the dock stage in the present invention has achieved the following technical advantages through practical application:

[0016] 1. The present invention provides a method for zero-position adjustment of a ship rudder stock during installation in a dock stage. The method is adjusted by hand chain blocks connected to both sides of a nut. The angle of the rudder stock is adjusted by adjusting the length of the chains of the hand chain blocks on both sides, thereby saving manpower. At the same time, the setting of a fixed module prevents sliding when adjusting the angle of the rudder stock, thereby improving safety in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a top view of an adjustment module in a method for zero-position adjustment of a ship rudder stock when it is installed in a dock stage according to the present invention.

[0018] Figure 2 The invention discloses an installation diagram of an adjusting device in a method for zero-position adjustment of a ship's rudder stock when it is installed in a dock stage. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is described below by the specific examples 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.

[0020] like Figure 1 and Figure 2 As shown, the present invention belongs to a method for zero position adjustment of a ship rudder stock during installation in a dock stage, and the method specifically comprises the following steps:

[0021] S1, install a hand chain hoist in the steering gear cabin according to the space layout in the steering gear cabin;

[0022] S2, installing an adjustment device on the rudder stock 1, connecting the hand chain hoist to the adjustment device on the rudder stock 1, and then hoisting the rudder stock 1 into the rudder sleeve by a crane;

[0023] S3, using a crane to move the lower cone surface of the rudder stock 1 close to the pinhole surface of the rudder blade, and then adjusting the installation angle of the rudder stock 1 by a hand chain hoist, and measuring the angle between the rudder stock 1 and the center line of the shaft system until the angle between the rudder stock 1 and the center line of the shaft system meets the requirements;

[0024] S4, when the angle adjustment of the rudder bar 1 is completed, the rudder bar 1 is lowered by a crane and installed in the rudder sleeve.

[0025] The installation of the hand chain hoist in the steering gear cabin is specifically as follows: according to the layout of the side steering gear cabin, two oppositely arranged structural column positions in the steering gear cabin are selected, and the hand chain hoists are respectively installed on the structural columns.

[0026] The adjustment device includes a fixing module 2 and an adjustment module 3. The fixing module 2 includes a fixing plate. The fixing plate is semicircular as a whole. Fixing bolt holes 32 are respectively provided at both ends of the fixing plate. The fixing plate is installed at the threaded part of the upper end of the rudder bar 1. When the fixing plate is installed, the fixing bolt holes 32 at both ends of the fixing plate are aligned and the fixing plate is connected and fixed to the top of the rudder bar 1 by bolts.

[0027] The adjustment module 3 includes an adjustment plate 31, which is semicircular as a whole. An adjustment ring 33 is provided at the middle part of the outer side of the adjustment plate 31. Fixing bolt holes 32 are respectively provided at both ends of the adjustment plate 31, and the opening direction of the fixing bolt holes 32 is perpendicular to the opening direction of the ring. When the adjustment plate 31 is installed, the fixing bolt holes 32 at both ends of the adjustment plate 31 are aligned and the adjustment plate 31 is connected and fixed to the top of the rudder stock 1 by bolts, and the adjustment plate 31 is installed at the lower end of the fixed plate.

[0028] The hand winches arranged in the side steering gear cabin are respectively connected to the lifting rings on the adjustment plate 31. The hand winches adjust the angle of the rudder stock 1 as follows: when the crane lifts the rudder stock 1 into the rudder sleeve, the hand winch on one side of the rudder stock 1 is tightened and lifted, and the hand winch on the other side of the rudder stock 1 is lowered, so that the zero position line of the rudder stock 1 rotates and forms an angle with the center line of the shaft system, thereby completing the adjustment of the angle of the rudder stock 1.

[0029] The adjustment is performed through the hand chain blocks connected to both sides of the nut. The angle of the rudder bar 1 is adjusted by adjusting the length of the hand chain blocks on both sides, which saves manpower. At the same time, the setting of the fixing module 2 prevents the rudder bar 1 from slipping when adjusting the angle, thereby improving the safety of use.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A method for zeroing a ship's rudder stock during installation in a dock, characterized in that: The method specifically comprises the following steps: S1, install a hand chain hoist in the steering gear cabin according to the space layout in the steering gear cabin; S2, install the adjustment device on the rudder stock, connect the hand chain hoist with the adjustment device on the rudder stock, and then hoist the rudder stock into the rudder sleeve by a crane; S3, use a crane to bring the lower cone surface of the rudder stock close to the pinhole surface of the rudder blade, then use a hand chain hoist to adjust the installation angle of the rudder stock, and measure the angle between the rudder stock and the center line of the shaft system until the angle between the rudder stock and the center line of the shaft system meets the requirements; S4, when the rudder stock angle adjustment is completed, the rudder stock is lowered by a crane and installed in the rudder sleeve.

2. A method for zero position adjustment of a ship rudder stock during installation in a dock phase according to claim 1, characterized in that: The installation of the hand chain hoist in the steering gear cabin is specifically as follows: according to the layout of the side steering gear cabin, two oppositely arranged structural column positions in the steering gear cabin are selected, and the hand chain hoists are respectively installed on the structural columns.

3. A method for zero position adjustment of a ship rudder stock during installation in a dock phase according to claim 1, characterized in that: The adjustment device includes a fixing module and an adjusting module. The fixing module includes a fixing plate. The fixing plate is semicircular as a whole. Fixing bolt holes are respectively arranged at both ends of the fixing plate. The fixing plate is installed at the threaded part of the upper end of the rudder stock. When the fixing plate is installed, the fixing bolt holes at both ends of the fixing plate are aligned and the fixing plate is connected and fixed to the top of the rudder stock by bolts.

4. A method for zero position adjustment of a ship rudder stock during installation in a dock phase according to claim 3, characterized in that: The adjustment module includes an adjustment plate, which is semicircular as a whole. An adjustment ring is provided in the middle of the outer side of the adjustment plate. Fixing bolt holes are respectively provided at both ends of the adjustment plate, and the opening direction of the fixing bolt holes is perpendicular to the opening direction of the ring. When the adjustment plate is installed, the fixing bolt holes at both ends of the adjustment plate are aligned and the adjustment plate is connected and fixed to the top of the rudder stock by bolts, and the adjustment plate is installed at the lower end of the fixed plate.

5. A method for zero position adjustment of a ship rudder stock during installation in a dock phase according to claim 4, characterized in that: The hand winches arranged in the side steering gear cabin are respectively connected to the lifting rings on the adjusting plate. The hand winches adjust the angle of the rudder stock as follows: when the crane lifts the rudder stock into the rudder sleeve, the rudder stock is tightened and lifted by the hand winch on one side of the rudder stock, and the hand winch on the other side of the rudder stock is lowered to make the rudder stock zero position line rotate and form an angle with the center line of the shaft system, thereby completing the adjustment of the rudder stock angle.

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