Axial fixing structure for shafting of marine straight-wing steering oar device

Abstract

The utility model relates to a marine straight wing steering oar device shafting axial fixing structure, which comprises a main shaft, a transmission gear, a first bearing and a second bearing, the transmission gear is fixedly sleeved at the upper end part of the main shaft, the first bearing is fixedly sleeved at the upper end part of the main shaft, and the first bearing is positioned at the upper end of the transmission gear; the first bearing is sleeved with a first fixed seat which is fixedly arranged; the second bearing is fixedly sleeved at the lower end part of the main shaft, and is sleeved with a second fixed seat which is fixedly arranged; the middle of the spindle is fixedly sleeved with a spacer bush, the upper end of the spacer bush is tightly attached to the transmission gear, and the lower end of the spacer bush is tightly attached to the second bearing. According to the utility model, the quality stability can be effectively improved, the labor intensity is reduced, the requirement on the technical level of installation personnel is reduced, the production cost can be reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ships, and particularly relates to an axial fixing structure of a shafting of a marine straight vane rudder and propeller device. Background Art

[0002] In the prior art, a straight vane rudder and propeller device is divided into three major parts, namely a steering gear device, a speed reduction and reversing device, and a power conversion device. Among them, as an important part of power input, the speed reduction and reversing device has very strict requirements for machining accuracy and installation and debugging. In the actual production process, the accuracy often fails to meet the standard and the installation is not in place, resulting in lubricating oil leakage and large noise. Even worse, the main shaft breaks during use;

[0003] The axial fixing structure of the shafting of the marine straight vane rudder and propeller device in the prior art is as Figure 1 shown. A plurality of components are arranged on the main shaft, including gears and bearings. However, the overall system size matching is very complex, and the dimensional tolerances and geometric tolerances of the components are extremely strict, bringing huge machining difficulties. For example, other components such as gears and bolts are fixed on the main shaft, and the bearings are tapered bearings, which will increase the machining of the threads and tapered positions of the main shaft; in addition, the complexity of the system also causes very high installation and debugging difficulties. Each product needs to be disassembled and adjusted repeatedly for gear clearance and bearing clearance, causing great trouble to production, with very low production efficiency and unable to guarantee quality stability. Therefore, it is necessary to solve this problem. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the above technical problems in the prior art to some extent. For this purpose, an object of the utility model is to provide an axial fixing structure of a shafting of a marine straight vane rudder and propeller device, which can effectively improve the quality stability, reduce the labor intensity, reduce the production cost and improve the production efficiency.

[0005] The technical solution for the utility model to solve the above technical problems is as follows: an axial fixing structure of a shafting of a marine straight vane rudder and propeller device, including a main shaft, a transmission gear, a first bearing and a second bearing, all of which are columnar structures except for the bottom. The transmission gear is fixedly sleeved on the upper end of the main shaft, and the first bearing is fixedly sleeved on the upper end of the main shaft and is located above the transmission gear; a fixedly arranged first fixing seat is sleeved on the first bearing; the second bearing is fixedly sleeved on the lower end of the main shaft, and a fixedly arranged second fixing seat is sleeved on the second bearing;

[0006] A spacer sleeve is fixedly sleeved in the middle of the main shaft, the upper end of the spacer sleeve is close to the transmission gear, and the lower end of the spacer sleeve is close to the second bearing.

[0007] The beneficial effects of the present utility model are as follows: The spindle is columnar in structure except at the bottom, reducing the machining of the taper position of the spindle, greatly reducing the machining difficulty and machining time; the total diameter difference of the spindle corresponding to the first bearing and the second bearing is only 10 mm, and it is gradually reduced in four steps, greatly reducing stress concentration; avoiding using a large locking nut to fix the transmission gear, reducing the thread machining on the spindle, greatly reducing the machining difficulty and machining time, improving the part consistency at the same time, and greatly improving the installation efficiency.

[0008] On the basis of the above technical solution, the present utility model can be further improved as follows.

[0009] Further, an axial limit gland is fixedly arranged at the upper end of the spindle, the edge end of the axial limit gland is at the upper end of the first bearing, and the axial limit gland limits and fixes the first bearing.

[0010] The beneficial effect of adopting the above further solution is: avoiding using a large locking nut to fix the axial limit gland, reducing the thread machining on the spindle.

[0011] Further, the axial limit gland is fixedly connected to the spindle by screws.

[0012] The beneficial effect of adopting the above further solution is: protecting the second bearing with a washer, improving the service life and running smoothness of the second bearing.

[0013] Further, a washer is fixedly sleeved on the spindle corresponding to the upper end of the second bearing, a second gland is arranged at the upper end of the washer, and the second gland is fixedly connected to the second fixing seat.

[0014] The beneficial effect of adopting the above further solution is: protecting the second bearing with a washer, improving the service life and running smoothness of the second bearing.

[0015] Further, a sealing device is arranged at the lower end of the second bearing, and the sealing device is fixedly connected to the second fixing seat.

[0016] The beneficial effect of adopting the above further solution is: the sealing device prevents the lubricating fluid in the second bearing from flowing out, ensuring the smooth and efficient operation of the second bearing.

[0017] Further, both the first bearing and the second bearing are bearings without taper.

[0018] The beneficial effect of adopting the above further solution is: the first bearing and the second bearing can reduce the machining of the taper position on the spindle, greatly reducing the machining difficulty and machining time, improving the part consistency at the same time, and greatly improving the installation efficiency. Description of the Drawings

[0019] Figure 1 Structural schematic diagram of the axial fixing structure of the shafting of a marine straight vane rudder and propeller device in the prior art;

[0020] Figure 2 Structural schematic diagram of an axial fixing structure of the shafting of a marine straight vane rudder and propeller device of the present utility model;

[0021] Figure 3 is Figure 2 Enlarged schematic diagram at position A of

[0022] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0023] 1. Main shaft, 2. Transmission gear, 3. First bearing, 4. Second bearing, 5. First fixed seat, 6. Second fixed seat, 7. Sleeve, 8. Axial limit gland, 9. Screw, 10. Washer, 11. Second gland, 12. Sealing device. Specific implementation mode

[0024] The principles and features of the present utility model will be described below in conjunction with the attached drawings. The examples given are only used to explain the present utility model and are not intended to limit the scope of the present utility model.

[0025] As Figure 2 and Figure 3 shown, an axial fixing structure of the shafting of a marine straight vane rudder and propeller device includes a main shaft 1, a transmission gear 2, a first bearing 3, and a second bearing 4 that are all columnar structures except for the bottom. The transmission gear 2 is fixedly sleeved on the upper end of the main shaft 1. The first bearing 3 is fixedly sleeved on the upper end of the main shaft 1, and the first bearing 3 is located above the transmission gear 2. A fixedly arranged first fixed seat 5 is sleeved on the first bearing 3. The second bearing 4 is fixedly sleeved on the lower end of the main shaft 1, and a fixedly arranged second fixed seat 6 is sleeved on the second bearing 4;

[0026] A sleeve 7 is fixedly sleeved in the middle of the main shaft 1. The upper end of the sleeve 7 abuts against the transmission gear 2, and the lower end of the sleeve 7 abuts against the second bearing 4.

[0027] In specific application of this embodiment, the main shaft 1 is a columnar structure except for the bottom, reducing the processing of the taper position of the main shaft, greatly reducing the processing difficulty and processing time. The total diameter of the main shaft 1 at the positions corresponding to the first bearing 3 and the second bearing 4 only differs by 10 mm and is gradually reduced in four steps, greatly reducing stress concentration.

[0028] The transmission gear 2 is fixedly sleeved on the main shaft 1. The upper end of the transmission gear 2 is fixedly connected to the first bearing 3, and the lower end of the transmission gear 2 is fixedly connected to the second bearing 4 through a spacer sleeve 7. In addition, the first fixing seat 5 fixes the first bearing 3, and the second fixing seat 6 fixes the second bearing 4, thereby further improving the stability of the transmission gear 2 fixed on the main shaft 1, avoiding fixing the transmission gear 2 with a large locking nut, reducing the thread machining on the main shaft, greatly reducing the machining difficulty and machining time, improving the part consistency at the same time, and greatly improving the installation efficiency.

[0029] In this embodiment, through the structural improvement of the main shaft 1, the transmission gear 2, the first bearing 3 and the second bearing 4, the stability of the quality can be effectively improved, the labor intensity can be reduced, the technical level requirements for the installation personnel can be reduced, the production cost can be reduced, and the production efficiency can be improved.

[0030] In the above embodiment, an axial limit gland 8 is fixedly arranged at the upper end of the main shaft 1. The edge end of the axial limit gland 8 is located above the first bearing 3, and the axial limit gland 8 limits and fixes the first bearing 3.

[0031] In the above embodiment, the axial limit gland 8 is fixedly connected to the main shaft 1 through a screw 9.

[0032] In specific applications, the axial limit gland 8 is fixedly connected to the top of the main shaft 1 through a screw 9. The top of the first bearing 3 is fixed by using the axial limit gland 8, and then the axials of the first bearing 3 and the transmission gear 2 are fixed, improving the stability of the first bearing 3 and the transmission gear 2; avoiding fixing the axial limit gland 8 with a large locking nut and reducing the thread machining on the main shaft.

[0033] In the above embodiment, a washer 10 is fixedly sleeved on the main shaft 1 corresponding to the upper end of the second bearing 4. A second gland 11 is arranged at the upper end of the washer 10, and the second gland 11 is fixedly connected to the second fixing seat 6.

[0034] In specific applications, the washer 10 is used to protect the second bearing 4, improving the service life and running smoothness of the second bearing 4.

[0035] In the above embodiment, a sealing device 12 is arranged at the lower end of the second bearing 4, and the sealing device 12 is fixedly connected to the second fixing seat 6.

[0036] In specific applications, the sealing device 12 and the second fixing seat 6 are used in cooperation to seal the lower end face of the second bearing 4, avoiding the lubricating fluid in the second bearing 4 from flowing out, and ensuring the smooth and efficient operation of the second bearing 4.

[0037] In the above embodiments, the first bearing 3 and the second bearing 4 are both bearings without taper.

[0038] In specific applications, the first bearing 3 and the second bearing 4 can reduce the machining of the taper position on the main shaft 1, greatly reducing the machining difficulty and machining time. At the same time, the part consistency is improved, and the installation efficiency can also be greatly enhanced.

[0039] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, 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 shaft axial fixing structure for a straight-wing rudder propeller device for a ship, characterized in that: The invention comprises a main shaft (1) which is a columnar structure except for the bottom, a transmission gear (2), a first bearing (3) and a second bearing (4), wherein the transmission gear (2) is fixedly sleeved on the upper end of the main shaft (1), the first bearing (3) is fixedly sleeved on the upper end of the main shaft (1), and the first bearing (3) is located at the upper end of the transmission gear (2); a first fixed seat (5) is fixedly sleeved on the first bearing (3); the second bearing (4) is fixedly sleeved on the lower end of the main shaft (1), and a second fixed seat (6) is fixedly sleeved on the second bearing (4); A spacer sleeve (7) is fixedly mounted in the middle of the main shaft (1), the upper end of the spacer sleeve (7) is in close contact with the transmission gear (2), and the lower end of the spacer sleeve (7) is in close contact with the second bearing (4).

2. The shaft axial fixing structure of a ship straight-wing rudder propeller device according to claim 1 is characterized in that: An axial limiting pressure cover (8) is fixedly provided at the upper end of the main shaft (1), and the edge end of the axial limiting pressure cover (8) is located at the upper end of the first bearing (3), and the axial limiting pressure cover (8) limits and fixes the first bearing (3).

3. The shaft axial fixing structure of a ship straight-wing rudder propeller device according to claim 2 is characterized in that: The axial limiting pressure cover (8) is fixedly connected to the main shaft (1) via screws (9).

4. The shaft axial fixing structure of a ship straight-wing rudder propeller device according to claim 1 is characterized in that: A washer (10) is fixedly mounted on the upper end of the main shaft (1) corresponding to the second bearing (4), a second pressure cover (11) is arranged on the upper end of the washer (10), and the second pressure cover (11) is fixedly connected to the second fixing seat (6).

5. The shaft axial fixing structure of a ship straight-wing rudder propeller device according to claim 1 is characterized in that: A sealing device (12) is provided at the lower end of the second bearing (4), and the sealing device (12) is fixedly connected to the second fixing seat (6).

6. The shaft axial fixing structure of a ship straight-wing rudder propeller device according to claim 1 is characterized in that: The first bearing (3) and the second bearing (4) are both bearings without taper.

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