Shafting ground speed measuring device for a ship

Abstract

The utility model discloses a ship is with axle system ground speed measuring device, and specifically relates to axle system technical field, including the axle body, both ends of axle body are equipped with mounting seat, and the side of two mounting seat far away all is equipped with the installation groove, and the both ends of axle body extend to two installation groove inside respectively, and axle body passes through bearing and is movably connected with mounting seat, and every installation groove inside is equipped with the speed measuring piece for monitoring the rotating speed of axle body, the utility model discloses the outer diameter of touch ring is greater than the diameter of linkage shaft, so that the pressure of two spring rebounding rollers is not one, and the friction coefficient of touch ring and one of the rollers is greater, and the friction coefficient of linkage shaft and another roller is smaller, so when the speed value is not one, it is indicated that at least one roller slips because of the abnormal friction coefficient, and then the equipment needs to be overhauled. And through multistage speed measuring design, and combining the friction differentiation principle, the effect of high-precision rotating speed monitoring and timely maintenance can be realized.

Description

Technical Field

[0001] This utility model relates to the field of shafting technology, and more specifically to a shafting grounding speed measuring device for ships. Background Technology

[0002] As a core component of power transmission, the operational safety and stability of a ship's shafting directly affect its navigation performance and service life. Therefore, ground-based speed measuring devices are commonly used to monitor the ship's shafting system, achieving real-time monitoring of its performance.

[0003] As shown in the prior art published in CN211032985U, although this prior art incorporates a speed measuring mechanism, with multiple movable slots inside the support frame to accommodate components, and a semi-circular sliding block slidably connected to the outer circumferential side of the slide rod, and a spring-driven block pushing the semi-circular sliding block towards the center of the corresponding semi-circular pressing block, causing the two semi-circular sliding blocks to press against the corresponding semi-circular support block, and the semi-circular support block to move away from the corresponding slide rod, the arc-shaped speed measuring module can measure the speed of the propeller shaft, thereby improving the accuracy of speed measurement. However, this prior art solution has inherent defects; its speed measurement accuracy is difficult to guarantee effectively, and it cannot achieve real-time feedback of measurement errors, resulting in unreliable monitoring results. Utility Model Content

[0004] To overcome the aforementioned deficiencies of the prior art, this utility model provides a shafting grounding speed measuring device for ships. By setting the outer diameter of the contact ring to be larger than the diameter of the linkage shaft, the pressure of the two spring-loaded return rollers is different. The friction coefficient between the contact ring and one roller is higher, while the friction coefficient between the linkage shaft and the other roller is lower. Thus, when the measured speed values ​​are inconsistent, it indicates that at least one roller is slipping due to an abnormal friction coefficient, requiring equipment maintenance. Furthermore, through a multi-stage speed measurement design combined with the principle of frictional difference, high-precision speed monitoring and timely maintenance can be achieved, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a shaft grounding speed measuring device for ships, including a shaft body, with mounting seats at both ends of the shaft body, and mounting grooves opened on the side of the two mounting seats that are far apart from each other. The two ends of the shaft body extend into the two mounting grooves respectively, and the shaft body is movably connected to the mounting seats through bearings.

[0006] Each mounting slot is equipped with a speed measuring device for monitoring the shaft speed;

[0007] The speed measuring component includes a linkage shaft and a contact ring disposed in the mounting groove. The contact ring is sleeved on the outside of the end of the linkage shaft away from the shaft body, and the end of the linkage shaft away from the contact ring is fixed together with the shaft body. Both the linkage shaft and the contact ring are provided with rollers at the top, and an arc-shaped speed measuring module is installed on the outside of the rollers.

[0008] In a preferred embodiment, each roller is fitted with a fixed bracket, and both ends of the roller are movably connected to the fixed bracket via a rotating shaft. The top of the fixed bracket is equipped with a telescopic rod for connecting to the inner wall of the mounting groove, and the bottom end of the telescopic rod is fitted with a spring. The spring's rebound force pushes the roller inside the fixed bracket to contact the contact ring and the linkage shaft, so that the roller can rotate together with the linkage shaft and the contact ring, thereby facilitating the speed measurement of the shaft.

[0009] In a preferred embodiment, the outer diameter of the touch ring is larger than the diameter of the linkage shaft. Because the outer diameter of the touch ring is larger than the diameter of the linkage shaft, the spring pressure on the touch ring is greater.

[0010] In a preferred embodiment, a plurality of spaced-apart assembly plates are installed inside the mounting groove, and an assembly slot is provided on the side of the assembly plate away from the mounting groove. The assembly slot on the assembly plate facilitates the subsequent assembly and fixing of the sealing plate.

[0011] In a preferred embodiment, a sealing plate is provided on the side of the mounting groove away from the shaft, and a plurality of fastening bolts are provided on the side of the sealing plate away from the mounting seat. The plurality of fastening bolts correspond to the positions of a plurality of assembly plates on the left and right respectively. The fastening bolts pass through the assembly plates and extend into the interior of the assembly groove. The fastening bolts are threadedly connected to the assembly groove. Through the connection between the fastening bolts and the assembly plates, the sealing plate can be fixedly assembled. At the same time, the fastening bolts can be removed to remove the sealing plate, which facilitates the maintenance of the equipment in the mounting groove.

[0012] In a preferred embodiment, two spaced mounting holes are provided on the exterior of both the front and rear ends of the mounting base, which facilitates the worker to fix the mounting base in a suitable position.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] By setting the outer diameter of the contact ring to be larger than the diameter of the linkage shaft, the pressure of the two spring-loaded return rollers is made different. The friction coefficient between the contact ring and one of the rollers is higher, while the friction coefficient between the linkage shaft and the other roller is lower. Thus, when the measured speed values ​​are inconsistent, it indicates that at least one roller is slipping due to an abnormal friction coefficient, requiring equipment maintenance. Furthermore, through multi-stage speed measurement design, combined with the principle of frictional difference, high-precision speed monitoring and timely maintenance can be achieved. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a side view of the mounting base of this utility model;

[0017] Figure 3 This is a sectional view of the mounting base of this utility model;

[0018] Figure 4 This is a side view of the linkage shaft of this utility model;

[0019] Figure 5 This is an exploded view of the fixed bracket of this utility model.

[0020] The attached diagram is labeled as follows: 1. Shaft; 2. Mounting base; 3. Mounting groove; 4. Linkage shaft; 5. Contact ring; 6. Roller; 7. Arc surface speed measuring module; 8. Fixed bracket; 9. Telescopic rod; 10. Spring; 11. Assembly plate; 12. Assembly groove; 13. Sealing plate; 14. Fastening bolt; 15. Mounting hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Refer to the instruction manual appendix Figures 1-5 This utility model provides a shafting grounding speed measuring device for ships, including a shaft body 1. Each end of the shaft body 1 is provided with a mounting seat 2. A mounting groove 3 is formed on the side of each mounting seat 2 that is far apart from the shaft body 1. Both ends of the shaft body 1 extend into the two mounting grooves 3, and the shaft body 1 is movably connected to the mounting seat 2 via bearings. Each mounting groove 3 contains a speed measuring element for monitoring the rotational speed of the shaft body 1. The speed measuring element includes a linkage shaft 4 and a contact ring 5 disposed within the mounting groove 3. The contact ring 5 is sleeved on the outside of the end of the linkage shaft 4 furthest from the shaft body 1, and the end of the linkage shaft 4 furthest from the contact ring 5 is fixed to the shaft body 1. Rollers 6 are provided on the top of both the linkage shaft 4 and the contact ring 5, and an arc-shaped speed measuring module 7 is mounted on the outside of the rollers 6.

[0023] When the aforementioned speed measuring device is used to test the shaft 1, since the linkage shaft 4 is integrated with the shaft 1, the linkage shaft 4 can drive the contact ring 5 to rotate together with the shaft 1, and the movement of the linkage shaft 4, the contact ring 5, and the shaft 1 are synchronized. Then, through the contact of the two rollers 6 with the linkage shaft 4 and the contact ring 5 respectively, the rollers 6 can drive the arc-shaped speed measuring module 7 to rotate using friction, thereby achieving the effect of monitoring the rotational speed of the shaft 1.

[0024] In order to enable the linkage shaft 4 and the contact ring 5 to fully drive the roller 6 to rotate, each roller 6 is fitted with a fixed bracket 8, and both ends of the roller 6 are movably connected to the fixed bracket 8 through a rotating shaft. The top of the fixed bracket 8 is equipped with a telescopic rod 9 for connecting to the inner wall of the mounting groove 3, and the bottom end of the telescopic rod 9 is fitted with a spring 10.

[0025] This allows the spring 10 to push the fixed bracket 8 downwards, which in turn moves the roller 6 downwards, ensuring full contact between the roller 6 and the linkage shaft 4 and the contact ring 5. However, because the outer diameter of the contact ring 5 is larger than the diameter of the linkage shaft 4, the pressure of the springs 10 on the two telescopic rods 9 is uneven. This results in a higher coefficient of friction between the contact ring 5 and one of the rollers 6, while the coefficient of friction between the linkage shaft 4 and the other roller 6 is lower. Therefore, when the speed readings differ, it indicates that at least one roller 6 is slipping due to an abnormal coefficient of friction, requiring equipment maintenance. Furthermore, through a multi-stage speed measurement design combined with the principle of frictional differential, high-precision speed monitoring and early fault warning can be achieved.

[0026] When the aforementioned rollers 6 and other equipment require maintenance, multiple spaced-apart mounting plates 11 are installed inside the mounting groove 3, with mounting grooves 12 formed on the side of the mounting plates 11 away from the mounting groove 3. A sealing plate 13 is provided on the side of the mounting groove 3 away from the shaft 1, and multiple fastening bolts 14 are provided on the side of the sealing plate 13 away from the mounting base 2. The multiple fastening bolts 14 correspond left and right to the positions of the multiple mounting plates 11, and the fastening bolts 14 penetrate the mounting plates 11 and extend into the mounting grooves 12. The fastening bolts 14 are threadedly connected to the mounting grooves 12. Thus, the fastening bolts 14 can be removed from the mounting plates 11, thereby allowing the sealing plate 13 to be removed, facilitating maintenance of the rollers 6 and other equipment by personnel through the mounting groove 3.

[0027] To ensure the stability of the above-mentioned equipment, two spaced mounting holes 15 are provided on the exterior of both the front and rear ends of the mounting base 2. By providing mounting holes 15 on the exterior of the bottom end of the mounting base 2, the operator can fix the mounting base 2 in a suitable position, thereby ensuring the stability of the mounting base 2 in use.

[0028] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A ship shafting grounding speed measuring device, comprising a shaft (1), characterized in that: The shaft (1) is provided with mounting seats (2) at both ends. The two mounting seats (2) are provided with mounting grooves (3) on the side away from each other. The two ends of the shaft (1) extend into the two mounting grooves (3) respectively, and the shaft (1) is movably connected to the mounting seats (2) through bearings. Each mounting slot (3) is equipped with a speed measuring element for monitoring the rotational speed of the shaft (1); The speed measuring component includes a linkage shaft (4) and a touch ring (5) disposed in the mounting groove (3). The touch ring (5) is sleeved on the outside of the end of the linkage shaft (4) away from the shaft body (1), and the end of the linkage shaft (4) away from the touch ring (5) is fixed together with the shaft body (1). The top of the linkage shaft (4) and the touch ring (5) are both provided with rollers (6), and an arc surface speed measuring module (7) is installed on the outside of the rollers (6).

2. The ship shafting grounding speed measuring device according to claim 1, characterized in that: Each roller (6) is fitted with a fixed bracket (8) on the outside, and both ends of the roller (6) are movably connected to the fixed bracket (8) through a rotating shaft. The top of the fixed bracket (8) is equipped with a telescopic rod (9) for connecting to the inner wall of the mounting groove (3), and the bottom end of the telescopic rod (9) is fitted with a spring (10).

3. The ship shafting grounding speed measuring device according to claim 1, characterized in that: The outer diameter of the contact ring (5) is larger than the diameter of the linkage shaft (4).

4. The ship shafting grounding speed measuring device according to claim 1, characterized in that: The mounting groove (3) is equipped with a plurality of spaced assembly plates (11), and an assembly groove (12) is provided on the side of the assembly plate (11) away from the mounting groove (3).

5. The ship shafting grounding speed measuring device according to claim 4, characterized in that: The mounting groove (3) is provided with a sealing plate (13) on the side away from the shaft (1). The sealing plate (13) is provided with multiple fastening bolts (14) on the side away from the mounting seat (2). The multiple fastening bolts (14) are respectively positioned on the left and right sides of multiple assembly plates (11). The fastening bolts (14) penetrate the assembly plate (11) and extend into the assembly groove (12). The fastening bolts (14) are threadedly connected to the assembly groove (12).

6. The ship shafting grounding speed measuring device according to claim 1, characterized in that: The mounting base (2) has two spaced mounting holes (15) on both the front and rear ends.

Images