A stern shaft speed measuring device

Abstract

This utility model relates to the field of stern shaft speed measurement technology, specifically a stern shaft speed measuring device. It includes a base plate, a mounting block on the top of the base plate, a groove inside the mounting block, a slider inside the groove, a connecting plate on the top of the slider, a mounting ring on one side of the connecting plate, a mounting bracket on one side of the mounting ring, an auxiliary wheel inside the mounting bracket, a shaft at the bottom of the auxiliary wheel, and a reflector on the outside of the shaft. This stern shaft speed measuring device, through the cooperation of the mounting ring, mounting bracket, and auxiliary wheel, facilitates shaft rotation; through the cooperation of the auxiliary wheel and the limiting cylinder, it provides positioning; and through the cooperation of the ball groove, spherical spring lock, and fixing bolt, it secures the mounting ring. By using this structure, the shaft assembly and disassembly steps are simplified, thereby facilitating inspection and maintenance.

Description

Technical Field

[0001] This utility model relates to the field of stern shaft speed measurement technology, specifically a stern shaft speed measurement device. Background Technology

[0002] The stern shaft, also known as the tail shaft, is the last section of the shaft system. The forward flange is connected to the intermediate shaft flange with tight-fitting bolts. The stern end is conical and is used to mount the propeller. The stern shaft is forged from high-quality carbon steel. On large ships, the stern shaft is mounted on two bearings: one is called the stern bearing, which is the part of the hull that is in contact with the water; the other is called the forward bearing, which is connected to the engine room. The space between the two bearings is the stern shaft compartment.

[0003] Existing stern shaft speed measuring devices require frequent maintenance due to their long-term underwater operation. However, their complex installation structure makes disassembly cumbersome and hinders inspection and maintenance. Therefore, there is an urgent need for a stern shaft speed measuring device to improve these issues. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to provide a stern shaft speed measuring device to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0006] To achieve the above objectives, one embodiment of this utility model provides a stern shaft speed measuring device, including a base plate, a mounting block on the top of the base plate, a sliding groove inside the mounting block, a slider inside the sliding groove, a connecting plate on the top of the slider, a mounting ring on one side of the connecting plate, a mounting bracket on one side of the mounting ring, an auxiliary wheel inside the mounting bracket, a shaft at the bottom of the auxiliary wheel, a reflector on the outer side of the shaft, a laser detector on one side of the reflector, and a fixing device on one side of the mounting block.

[0007] The present invention is further configured such that: a mounting box is provided on the outside of the laser detector, a sealing plate is provided inside the mounting box, and a processing box and an antenna are provided on one side of the sealing plate.

[0008] By adopting the above technical solution, a mounting box is set on the outside of the laser detector to serve as a waterproof measure.

[0009] The present invention is further configured such that: the slider is slidably connected to the inside of the groove, the mounting ring is fixedly connected to the connecting plate, the mounting bracket is fixedly connected to the inside of the mounting ring, and the auxiliary wheel is rotatably connected to the inside of the mounting bracket.

[0010] By adopting the above technical solution, the slider is slidably connected inside the groove, which serves as a limit.

[0011] The present invention is further configured such that: a propeller is provided on one side of the shaft, a protective cover is provided on the outside of the propeller, a limiting cylinder is provided on the outer surface of the shaft, the propeller is rotatably connected to the inside of the protective cover, the limiting cylinder is fixedly connected to the shaft, and the shaft is rotatably connected to one side of the auxiliary wheel.

[0012] By adopting the above technical solution, a limiting sleeve is provided on the outer surface of the shaft to play a limiting role.

[0013] The present invention is further configured such that: the fixing device includes a baffle and a ball groove, a limiting plate is provided on one side of the baffle, a fixing bolt is provided inside the limiting plate, a spherical spring lock is provided inside the ball groove, the ball groove is adapted to the spherical spring lock, and the ball groove is opened at the bottom of the connecting plate.

[0014] In summary, the beneficial technical effects of this utility model are as follows:

[0015] 1. This stern shaft speed measuring device, through the cooperation of the slider and the slide groove, facilitates the positioning of the mounting ring; through the cooperation of the mounting ring, the mounting bracket and the auxiliary wheel, facilitates the rotation of the shaft; through the cooperation of the auxiliary wheel and the limiting cylinder, it provides positioning; and through the cooperation of the ball groove, the ball spring lock and the fixing bolt, it secures the mounting ring. By using the above structure, the shaft disassembly and assembly steps are simplified, thereby facilitating inspection and maintenance.

[0016] 2. This stern shaft speed measuring device, through the combined use of a reflector and a laser detector, monitors the shaft rotation speed; through the combined use of a mounting box and a sealing plate, it provides waterproofing; and through the processing box and antenna, it calculates the shaft rotation speed.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the mounting ring structure of this utility model;

[0021] Figure 3This is a schematic diagram of the structure of the mounting block of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the shaft of this utility model;

[0023] Figure 5 This is a schematic diagram of the installation box of this utility model;

[0024] Figure 6 This is a structural schematic diagram of utility model A.

[0025] In the diagram: 1. Base plate; 2. Mounting block; 3. Slide groove; 4. Slider; 5. Connecting plate; 6. Mounting ring; 7. Mounting bracket; 8. Auxiliary wheel; 9. Shaft; 10. Reflector; 11. Laser detector; 12. Fixing device; 13. Mounting box; 14. Sealing plate; 15. Processing box; 16. Antenna; 17. Propeller; 18. Protective cover; 19. Limiting cylinder; 20. Baffle; 21. Ball groove; 22. Limiting plate; 23. Fixing bolt; 24. Spherical spring lock. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0027] Example 1

[0028] Reference Figures 1 to 6 This utility model discloses a stern shaft speed measuring device, including a base plate 1, a mounting block 2 on the top of the base plate 1, a groove 3 inside the mounting block 2, a slider 4 inside the groove 3, a connecting plate 5 on the top of the slider 4, a mounting ring 6 on one side of the connecting plate 5, a mounting frame 7 on one side of the mounting ring 6, an auxiliary wheel 8 inside the mounting frame 7, a shaft 9 at the bottom of the auxiliary wheel 8, a reflector 10 on the outside of the shaft 9, a laser detector 11 on one side of the reflector 10, and a fixing device 12 on one side of the mounting block 2. In this embodiment, the groove 3 serves to limit the movement path of the slider 2, the slider 2 serves to limit movement, the connecting plate 5 serves to position the slider, and the mounting frame 7 facilitates the rotation of the auxiliary wheel 8.

[0029] Reference Figure 3The laser detector 11 is provided with a mounting box 13 on its outer side. The mounting box 13 is provided with a sealing plate 14 inside. A processing box 15 and an antenna 16 are provided on one side of the sealing plate 14. In this embodiment, the laser detector 11 plays the role of detecting the reflector 10, and the sealing plate 14 and the mounting box 13 play the role of waterproofing.

[0030] Reference Figure 1 and Figure 2 The slider 4 is slidably connected to the inside of the groove 3, the mounting ring 6 is fixedly connected to the connecting plate 5, the mounting bracket 7 is fixedly connected to the inside of the mounting ring 6, and the auxiliary wheel 8 is rotatably connected to the inside of the mounting bracket 7. In this embodiment, the mounting ring 6 serves to fix the mounting bracket 7, and the auxiliary wheel 8 serves to facilitate the rotation of the shaft 9.

[0031] Reference Figure 1 and Figure 4 A propeller 17 is provided on one side of the shaft 9, and a protective cover 18 is provided on the outside of the propeller 17. A limiting cylinder 19 is provided on the outer surface of the shaft 9. The propeller 17 is rotatably connected to the inside of the protective cover 18. The limiting cylinder 19 is fixedly connected to the shaft 9. The shaft 9 is rotatably connected to one side of the auxiliary wheel 8. In this embodiment, the protective cover 18 serves to protect the propeller 17, and the limiting cylinder 19 serves to prevent the shaft 9 from shaking.

[0032] Reference Figure 1 , Figure 3 and Figure 6 The fixing device 12 includes a baffle 20 and a ball groove 21. A limiting plate 22 is provided on one side of the baffle 20. A fixing bolt 23 is provided inside the limiting plate 22. A spherical spring lock 24 is provided inside the ball groove 21. The ball groove 21 and the spherical spring lock 24 are adapted to each other. The ball groove 21 is opened at the bottom of the connecting plate 5. In this embodiment, the baffle 20 plays a limiting role, the fixing thread 22 plays a fixing role of the mounting ring 6, and the spherical spring lock 24 and the ball groove 21 play a positioning role.

[0033] The implementation principle of this embodiment is as follows:

[0034] When the shaft 9 rotates, since the limiting cylinder 19 is concentric with the shaft 9, the limiting cylinder 19 rotates with the shaft 9. The reflector 10 will rotate around the shaft 9 under the action of the shaft 9's rotation. When the laser detector 11 detects the reflector 10 on both the front and rear sides, it is considered that the shaft 9 has rotated one revolution. The number of times the laser detector 11 monitors the reflector 10 within a fixed time is used to calculate the rotation speed of the shaft 9 per minute using the processing box 15. Then, it is synchronized to the internal display screen of the ship through the antenna 16 so that the staff can observe the rotation speed of the shaft 9.

[0035] When the shaft 9 needs to be repaired, first remove the fixing bolt 23, and use the slider 4 to slide inside the slide groove 3. At the same time, the ball spring lock 24 loses connection with the ball groove 21, and the limit plate 22 also loses connection with the connecting plate 5. When the slider 4 slides to the end of the slide groove 3, pull the mounting ring 6 upward. The slider 4 disengages from the inside of the slide groove 3, and the upper half of the mounting ring 6 can be removed. The mounting ring 6 is divided into upper and lower parts. The lower half of the mounting ring 6 is fixedly connected to the mounting block 2, while the upper half of the mounting ring 6 is connected to the mounting block 2 using the fixing bolt 23. After the upper half of the mounting ring 6 is removed, the shaft 9 and the limit cylinder 19 are no longer restricted, and then maintenance and inspection can be carried out.

[0036] Compared with the prior art, the present invention has the following advantages:

[0037] The cooperation between slider 4 and slide groove 3 facilitates the positioning of mounting ring 6. The cooperation between mounting ring 6, mounting bracket 7 and auxiliary wheel 8 facilitates the rotation of shaft 9. The cooperation between auxiliary wheel 8 and limiting cylinder 19 provides positioning. The cooperation between ball groove 21, ball spring lock 24 and fixing bolt 23 secures mounting ring 6. By using the above structure, the disassembly and assembly steps of shaft 9 are simplified, thereby facilitating inspection and maintenance. The cooperation between reflector 10 and laser detector 11 monitors the rotational speed of shaft 9. The cooperation between mounting box 13 and sealing plate 14 provides waterproofing. The cooperation between processing box 15 and antenna 16 calculates the rotational speed of shaft 9.

[0038] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A stern shaft speed measuring device, characterized in that: The device includes a base plate (1), a mounting block (2) on the top of the base plate (1), a groove (3) inside the mounting block (2), a slider (4) inside the groove (3), a connecting plate (5) on the top of the slider (4), a mounting ring (6) on one side of the connecting plate (5), a mounting bracket (7) on one side of the mounting ring (6), an auxiliary wheel (8) inside the mounting bracket (7), a shaft (9) at the bottom of the auxiliary wheel (8), a reflector (10) on the outside of the shaft (9), a laser detector (11) on one side of the reflector (10), and a fixing device (12) on one side of the mounting block (2).

2. The stern shaft speed measuring device according to claim 1, characterized in that: An installation box (13) is provided on the outside of the laser detector (11), and a sealing plate (14) is provided inside the installation box (13). A processing box (15) and an antenna (16) are provided on one side of the sealing plate (14).

3. The stern shaft speed measuring device according to claim 1, characterized in that: The slider (4) is slidably connected to the inside of the groove (3), the mounting ring (6) is fixedly connected to the connecting plate (5), the mounting bracket (7) is fixedly connected to the inside of the mounting ring (6), and the auxiliary wheel (8) is rotatably connected to the inside of the mounting bracket (7).

4. The stern shaft speed measuring device according to claim 1, characterized in that: A propeller (17) is provided on one side of the shaft (9), a protective cover (18) is provided on the outside of the propeller (17), a limiting cylinder (19) is provided on the outer surface of the shaft (9), the propeller (17) is rotatably connected to the inside of the protective cover (18), the limiting cylinder (19) is fixedly connected to the shaft (9), and the shaft (9) is rotatably connected to one side of the auxiliary wheel (8).

5. A stern shaft speed measuring device according to claim 1, characterized in that: The fixing device (12) includes a baffle (20) and a ball groove (21). A limiting plate (22) is provided on one side of the baffle (20). A fixing bolt (23) is provided inside the limiting plate (22). A spherical spring lock (24) is provided inside the ball groove (21). The ball groove (21) is adapted to the spherical spring lock (24). The ball groove (21) is opened at the bottom of the connecting plate (5).

Images