Main power plant for a ship using a shaft generator

Abstract

The application relates to the field of ship power generation devices, in particular to a ship main power device using a shaft generator, which comprises two groups of main engine rotating shafts and a shaft generator main body installed in a cabin, the side wall of the main engine rotating shaft is provided with a plurality of insertion grooves, the side wall of the insertion groove is provided with a first limiting hole, and the input end of the shaft generator main body is connected with a driving shaft; the shaft generator main body is conveniently pushed through a moving mechanism, so that the shaft generator main body drives the driving shaft to be connected with the main engine rotating shaft in alignment, the driving shaft does not collide directly before being aligned with the main engine rotating shaft through a buffering mechanism, the collision damage of the driving shaft and the main engine rotating shaft is avoided, after the driving shaft and the main engine rotating shaft are aligned, the shaft generator main body is pushed, the driving shaft drives the insertion plate to be inserted into the insertion groove, the first limiting hole and the second limiting hole are aligned, and then a fixing bolt is screwed in, so that the fixed connection of the driving shaft and the main engine rotating shaft is realized.

Description

Technical Field

[0001] This invention relates to the field of marine power generation devices, and more specifically to a marine main power supply device using a shaft-driven generator. Background Technology

[0002] According to the relevant provisions of the China Classification Society's "Rules for the Construction of Seagoing Ships," the main power supply of a ship should be sufficient to power all electrical auxiliary equipment necessary to maintain the ship in normal operating condition and meet normal living conditions, without requiring emergency power. The main power supply should consist of at least two generator sets. Currently, some ships add a shaft generator to the two main diesel generator sets for use when the ship's electrical load is low, in order to reduce fuel consumption.

[0003] When installing the drive shaft of the shaft-driven generator onto the main unit's rotating shaft, two inconveniences arise due to the generator's large mass. First, the drive shaft is prone to collision with the main unit's rotating shaft during alignment, potentially causing damage. Second, the generator's large mass makes it difficult to move, further complicating the installation process.

[0004] This invention proposes a ship main power supply device using a shaft-driven generator to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a ship main power supply device using a shaft-driven generator.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a ship main power supply device using a shaft-driven generator, comprising two main engine shafts and a shaft-driven generator body installed in the engine room. Multiple slots are provided on the sidewalls of the main engine shafts, and first limiting holes are provided on the sidewalls of the slots. A drive shaft is connected to the input end of the shaft-driven generator body. Multiple second limiting holes are provided on the sidewalls of the drive shafts, and the second limiting holes can be aligned with the first limiting holes. Fixing bolts are installed in the second and first limiting holes. Multiple insert plates are connected to the inner sidewalls of the drive shafts. An installation mechanism is provided on the drive shafts, and a buffer mechanism is installed on the installation mechanism. A support plate is connected to the bottom end of the sidewall of the shaft-driven generator body, and a base plate is connected to the bottom end of the support plate. Sliding holes are provided at the top of the four corners of the base plate, and moving mechanisms are provided within the sliding holes. Limiting mechanisms are provided on the base plate.

[0007] As a preferred embodiment of the present invention, the mounting mechanism includes mounting grooves and mounting screw holes. The side wall of the drive shaft is provided with a plurality of mounting grooves, and the side wall of the mounting groove is provided with mounting screw holes. The mounting grooves correspond one-to-one with the insert plates.

[0008] As a preferred embodiment of the present invention, the buffer mechanism includes a connecting plate, a mounting hole, a carrier plate, a sliding groove, a spring, a buffer plate, and mounting screws. The connecting plate is inserted into the side wall of the mounting groove, and the side wall of the connecting plate has a mounting hole that can be aligned with a mounting screw hole. The bottom end of the connecting plate is connected to the carrier plate, and both side walls of the carrier plate have sliding grooves. The side walls of the sliding grooves are connected to springs, and dampers are installed inside the springs. The side walls of the sliding grooves are slidably connected to the buffer plate, and mounting screws are inserted into the mounting hole.

[0009] As a preferred embodiment of the present invention, the buffer plate is U-shaped, the end face sidewall of the carrier plate is aligned with the end face sidewall of the insert plate, the width of the buffer plate is equal to the width of the slot, the width of the insert plate is equal to the width of the slot, and the connecting plate and the carrier plate form a Z-shape.

[0010] As a preferred embodiment of the present invention, the moving mechanism includes a base block, a moving wheel, a support rod, a top plate, and a hydraulic cylinder. The base block is slidably connected to the side wall of the sliding hole. The moving wheel is connected to the bottom end of the base block. The support rod is connected to the top end of the base block. The top plate is connected to the top end of the support rod. The hydraulic cylinder is connected to the output end of the hydraulic cylinder and is connected to the base plate.

[0011] As a preferred embodiment of the present invention, the moving wheels can be made of electric wheels, and the top plate is shaped like a square.

[0012] As a preferred technical solution of the present invention, the limiting mechanism includes a limiting screw, a connecting screw hole and a limiting screw hole. Multiple limiting screw holes are provided on the side wall of the cabin near the main engine shaft. A connecting screw hole is also provided at the corner of the side wall of the bottom plate. The limiting screw is threadedly connected to the side wall of the connecting screw hole. The connecting screw hole can be aligned with the limiting screw hole.

[0013] In a preferred embodiment of the present invention, the length of the limiting screw is greater than the length of the support rod.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. This invention uses a moving mechanism to facilitate pushing the shaft-driven generator body, so that the shaft-driven generator body drives the drive shaft to align and connect with the main unit's rotating shaft. A buffer mechanism is used to prevent the drive shaft from directly colliding with the main unit's rotating shaft before alignment, thus avoiding collision damage between the drive shaft and the main unit's rotating shaft. After the drive shaft and the main unit's rotating shaft are aligned, the shaft-driven generator body is pushed, so that the drive shaft drives the insert plate to insert into the slot, aligning the first limit hole and the second limit hole. Then, the fixing bolt is screwed in to achieve a fixed connection between the drive shaft and the main unit's rotating shaft.

[0016] 2. In this invention, the drive shaft drives the connecting plate to move, the connecting plate drives the carrier plate to move, and the carrier plate drives the buffer plate to move towards the main shaft for alignment. When the buffer plate is not aligned with the slot, the buffer plate will collide with the main shaft. The buffer plate presses the spring and uses the damper to reduce the impact on the buffer plate and avoid the drive shaft and the main shaft from being directly damaged due to misalignment. After the buffer plate is inserted into the slot, the insert plate will follow the buffer plate into the slot, realizing the initial alignment connection between the drive shaft and the main shaft.

[0017] 3. This invention uses a hydraulic cylinder to pull the base plate vertically, which in turn moves the generator body vertically via a support plate. This allows for adjustment of the generator body's height, making it suitable for various heights of main shafts. The movable wheels facilitate the movement of parts on the base plate, thus enabling easy movement of the generator body. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0021] Figure 3 This is a schematic diagram of the base plate structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the drive shaft structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the cross-sectional structure of the drive shaft of the present invention;

[0024] Figure 6 This is a schematic diagram of the main unit's rotating shaft structure according to the present invention;

[0025] Figure 7 This is a schematic diagram of the drive shaft structure of the present invention;

[0026] Figure 8 This is a schematic diagram of the connecting plate structure of the present invention;

[0027] Figure 9 This is a schematic diagram of the cross-sectional structure of the base plate of the present invention.

[0028] In the diagram: 1. Main unit shaft; 2. Shaft-driven generator body; 3. Drive shaft; 4. Slot; 5. First limiting hole; 6. Second limiting hole; 7. Insert plate; 8. Mounting mechanism; 801. Mounting groove; 802. Mounting screw hole; 9. Buffer mechanism; 901. Connecting plate; 902. Mounting round hole; 903. Carrier plate; 904. Slide groove; 905. Spring; 906. Buffer plate; 907. Mounting screw; 10. Base plate; 11. Support plate; 12. Slide hole; 13. Moving mechanism; 1301. Base block; 1302. Moving wheel; 1303. Support rod; 1304. Top plate; 1305. Hydraulic cylinder; 14. Limiting mechanism; 1401. Limiting screw; 1402. Connecting screw hole; 1403. Limiting screw hole; 15. Fixing bolt; 16. Engine compartment. Detailed Implementation

[0029] The following will refer to the appendices in the embodiments of the present invention. Figure 1-9 The technical solutions in the embodiments of the present invention are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] Example

[0031] Please refer to Figure 1-9 The present invention provides the following technical solution: a ship main power supply device using a shaft-driven generator, comprising two sets of main engine shafts 1 and a shaft-driven generator body 2 installed in the engine room 16. The side wall of the main engine shaft 1 is provided with multiple slots 4, and the side wall of the slots 4 is provided with first limiting holes 5. The input end of the shaft-driven generator body 2 is connected to a drive shaft 3. The side wall of the drive shaft 3 is provided with multiple second limiting holes 6, which can be aligned with the first limiting holes 5. Fixing bolts 15 are installed in the second limiting holes 6 and the first limiting holes 5. Multiple insert plates 7 are connected to the inner side wall of the drive shaft 3. An installation mechanism 8 is provided on the drive shaft 3. A buffer mechanism 9 is installed on the installation mechanism 8. A support plate 11 is connected to the bottom end of the side wall of the shaft-driven generator body 2. A base plate 10 is connected to the bottom end of the support plate 11. Sliding holes 12 are provided at the top of the four corners of the base plate 10. A moving mechanism 13 is provided in the sliding holes 12. A limiting mechanism 14 is provided on the base plate 10.

[0032] The automatic switching control on the shaft generator body 2 is accomplished by an Automatic Transfer Switch (ATS) to achieve automatic switching of the ship's power generation system. Under normal circumstances, ships are typically equipped with two or more shaft generators, one of which serves as the main generator, while the others are standby generators. When the main generator fails or requires maintenance, the ATS can automatically connect the standby generators to the power grid to ensure normal power supply to the ship.

[0033] The basic principle of ATS is to automatically control the switching by detecting the grid voltage and frequency. When the grid voltage and frequency are normal, ATS connects the main generator to the grid in parallel to achieve full power supply from the power generation system; when the grid voltage or frequency is abnormal, ATS will automatically switch to the standby generator.

[0034] The moving mechanism 13 is used to facilitate pushing the shaft-driven generator body 2, so that the shaft-driven generator body 2 drives the drive shaft 3 to align and connect with the main unit rotating shaft 1. The buffer mechanism 9 is used to prevent the drive shaft 3 from directly colliding with the main unit rotating shaft 1 before alignment, thus avoiding collision damage between the drive shaft 3 and the main unit rotating shaft 1. After the drive shaft 3 and the main unit rotating shaft 1 are aligned, the shaft-driven generator body 2 is pushed, so that the drive shaft 3 drives the insert plate 7 to insert into the slot 4, and aligns the first limiting hole 5 and the second limiting hole 6. Then, the fixing bolt 15 is screwed in to achieve a fixed connection between the drive shaft 3 and the main unit rotating shaft 1.

[0035] Please refer to Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The mounting mechanism 8 includes mounting grooves 801 and mounting screw holes 802. Multiple mounting grooves 801 are provided on the side wall of the drive shaft 3, and mounting screw holes 802 are provided on the side wall of the mounting grooves 801. The mounting grooves 801 correspond one-to-one with the insert plate 7.

[0036] The buffer mechanism 9 includes a connecting plate 901, a mounting hole 902, a carrier plate 903, a sliding groove 904, a spring 905, a buffer plate 906, and mounting screws 907. The connecting plate 901 is inserted into the side wall of the mounting groove 801. The side wall of the connecting plate 901 has a mounting hole 902, which can be aligned with the mounting screw hole 802. The bottom end of the connecting plate 901 is connected to the carrier plate 903. Both side walls of the carrier plate 903 have sliding grooves 904. A spring 905 is connected to the side wall of the slide 904, and a damper is installed inside the spring 905. A buffer plate 906 is slidably connected to the side wall of the slide 904. A mounting screw 907 is inserted into the mounting hole 902. The buffer plate 906 is U-shaped. The end face side wall of the carrier plate 903 is aligned with the end face side wall of the insert plate 7. The width of the buffer plate 906 is equal to the width of the slot 4, and the width of the insert plate 7 is equal to the width of the slot 4. The connecting plate 901 and the carrier plate 903 form a Z-shape.

[0037] Insert the connecting plate 901 into the mounting slot 801, aligning the mounting hole 902 with the mounting screw hole 802. Then, screw the mounting screw 907 into the mounting screw hole 802, thus achieving a fixed connection between the connecting plate 901 and the drive shaft 3. At this time, the end face sidewall of the carrier plate 903 is flush with the end face sidewall of the insert plate 7. When the drive shaft 3 drives the connecting plate 901 to move, the connecting plate 901 drives the carrier plate 903 to move, and the carrier plate 903 drives the buffer plate 906 towards the main shaft 1. When the buffer plate 906 is not aligned with the slot 4, it will collide with the main shaft 1. The buffer plate 906 presses the spring 905, and the damper reduces the impact on the buffer plate 906, thus avoiding direct collision damage between the drive shaft 3 and the main shaft 1 due to misalignment. After the buffer plate 906 is inserted into the slot 4, the insert plate 7 will follow and be inserted into the slot 4, achieving the initial alignment connection between the drive shaft 3 and the main shaft 1.

[0038] Please refer to Figure 2 , Figure 3 and Figure 9 The moving mechanism 13 includes a base block 1301, a moving wheel 1302, a support rod 1303, a top plate 1304, and a hydraulic cylinder 1305. The base block 1301 is slidably connected to the side wall of the sliding hole 12. The moving wheel 1302 is connected to the bottom end of the base block 1301. The support rod 1303 is connected to the top end of the base block 1301. The top plate 1304 is connected to the top end of the support rod 1303. The hydraulic cylinder 1305 is connected to the top end of the support rod 1303. The output end of the hydraulic cylinder 1305 is connected to the base plate 10. The moving wheel 1302 can be made of electric wheel. The top plate 1304 is in the shape of a square.

[0039] Start the hydraulic cylinder 1305, which pulls the base plate 10 to move vertically. The base plate 10 drives the shaft-driven generator body 2 to move vertically through the support plate 11, thereby adjusting the height of the shaft-driven generator body 2 to accommodate the main shaft 1 of various heights. The movable wheel 1302 can be used to easily push the parts on the entire base plate 10, thereby facilitating the movement of the shaft-driven generator body 2.

[0040] Please refer to Figure 2 , Figure 3 and Figure 9 The limiting mechanism 14 includes a limiting screw 1401, a connecting screw hole 1402, and a limiting screw hole 1403. Multiple limiting screw holes 1403 are provided on the side wall of the engine compartment 16 near the main shaft 1. A connecting screw hole 1402 is also provided at the corner of the side wall of the bottom plate 10. The limiting screw 1401 is threadedly connected to the side wall of the connecting screw hole 1402. The connecting screw hole 1402 can be aligned with the limiting screw hole 1403. The length of the limiting screw 1401 is greater than the length of the support rod 1303.

[0041] After the drive shaft 3 and the main shaft 1 are fixedly connected, a limiting screw hole 1403 is opened on the side wall of the nacelle 16 below the connecting screw hole 1402. Then, the limiting screw 1401 is screwed into the limiting screw hole 1403 to further fix the base plate 10 and ensure the stability of the shaft-driven generator body 2.

[0042] The working principle and usage process of this invention are as follows: In specific use, the connecting plate 901 is inserted into the mounting groove 801, and the mounting round hole 902 is aligned with the mounting screw hole 802. Then, the mounting screw 907 is screwed into the mounting screw hole 802, thereby achieving a fixed connection between the connecting plate 901 and the drive shaft 3. The hydraulic cylinder 1305 is activated, and the hydraulic cylinder 1305 pulls the base plate 10 to move vertically. The base plate 10 drives the shaft-driven generator body 2 to move vertically through the support plate 11, thereby adjusting the height of the shaft-driven generator body 2 to accommodate various heights of the main shaft 1. The movable wheel 1302 can be used to easily push the parts on the entire base plate 10, thereby facilitating the movement of the shaft-driven generator body 2. The drive shaft 3 drives the connecting plate 901 to move, the connecting plate 901 drives the carrier plate 903 to move, and the carrier plate 903 drives... The buffer plate 906 moves towards the main shaft 1 for alignment. When the buffer plate 906 is not aligned with the slot 4, it will collide with the main shaft 1. The buffer plate 906 presses the spring 905, and the damper reduces the impact on the buffer plate 906, thus avoiding direct collision damage between the drive shaft 3 and the main shaft 1 due to misalignment. After the buffer plate 906 is inserted into the slot 4, the insert plate 7 will follow and be inserted into the slot 4, achieving the initial alignment connection between the drive shaft 3 and the main shaft 1. After the drive shaft 3 and the main shaft 1 are fixedly connected, a limiting screw hole 1403 is opened on the side wall of the nacelle 16 below the connecting screw hole 1402. Then, the limiting screw 1401 is screwed into the limiting screw hole 1403 to further fix the base plate 10 and ensure the stability of the shaft-driven generator body 2.

[0043] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A marine main power supply unit using a shaft-driven generator, comprising two main engine shafts (1) and a shaft-driven generator body (2) installed in the engine room (16), characterized in that: The main shaft (1) has multiple slots (4) on its side wall, and the slots (4) have first limiting holes (5) on their side walls. The input end of the shaft-driven generator body (2) is connected to a drive shaft (3). The drive shaft (3) has multiple second limiting holes (6) on its side wall. The second limiting holes (6) can be aligned with the first limiting holes (5). Fixing bolts (15) are installed in the second limiting holes (6) and the first limiting holes (5). The inner side wall of the drive shaft (3) Multiple insert plates (7) are connected, and an installation mechanism (8) is provided on the drive shaft (3). A buffer mechanism (9) is installed on the installation mechanism (8). A support plate (11) is connected to the bottom of the side wall of the shaft-driven generator body (2). A base plate (10) is connected to the bottom of the support plate (11). Sliding holes (12) are opened at the top of the four corners of the base plate (10). A moving mechanism (13) is provided in the sliding hole (12). A limit mechanism (14) is provided on the base plate (10). The mounting mechanism (8) includes mounting grooves (801) and mounting screw holes (802). The side wall of the drive shaft (3) is provided with multiple mounting grooves (801), and the side wall of the mounting grooves (801) is provided with mounting screw holes (802). The mounting grooves (801) correspond one-to-one with the insert plate (7). The buffer mechanism (9) includes a connecting plate (901), a mounting hole (902), a carrier plate (903), a sliding groove (904), a spring (905), a buffer plate (906), and a mounting screw (907). The side wall of the mounting groove (801) is connected to the connecting plate (901). The side wall of the connecting plate (901) is provided with a mounting hole (902). The mounting hole (902) can be aligned with the mounting screw hole (802). The bottom end of the connecting plate (901) is connected to the carrier plate (903). The side walls of the carrier plate (903) are provided with sliding grooves (904). The side walls of the sliding grooves (904) are connected to the springs (905). A damper is provided in the springs (905). The side walls of the sliding grooves (904) are slidably connected to the buffer plate (906). The mounting hole (902) is connected to the mounting screw (907). The moving mechanism (13) includes a base block (1301), a moving wheel (1302), a support rod (1303), a top plate (1304), and a hydraulic cylinder (1305). The base block (1301) is slidably connected to the side wall of the sliding hole (12). The moving wheel (1302) is connected to the bottom end of the base block (1301). The support rod (1303) is connected to the top end of the base block (1301). The top plate (1304) is connected to the top end of the support rod (1303). The hydraulic cylinder (1305) is connected to the top end of the support rod (1303). The output end of the hydraulic cylinder (1305) is connected to the base plate (10).

2. The ship's main power supply unit using a shaft-driven generator according to claim 1, characterized in that: The buffer plate (906) is U-shaped, the end face sidewall of the carrier plate (903) is aligned with the end face sidewall of the insert plate (7), the width of the buffer plate (906) is equal to the width of the slot (4), the width of the insert plate (7) is equal to the width of the slot (4), and the connecting plate (901) and the carrier plate (903) form a Z-shape.

3. The ship's main power supply unit using a shaft-driven generator according to claim 1, characterized in that: The moving wheel (1302) can be made of electric wheels, and the top plate (1304) is shaped like a square.

4. The ship's main power supply unit using a shaft-driven generator according to claim 1, characterized in that: The limiting mechanism (14) includes a limiting screw (1401), a connecting screw hole (1402) and a limiting screw hole (1403). The side wall of the cabin (16) located near the main shaft (1) is provided with multiple limiting screw holes (1403). The corner of the side wall of the bottom plate (10) is also provided with a connecting screw hole (1402). The side wall of the connecting screw hole (1402) is threaded with the limiting screw (1401). The connecting screw hole (1402) can be aligned with the limiting screw hole (1403).

5. The ship's main power supply unit using a shaft-driven generator according to claim 4, characterized in that: The length of the limiting screw (1401) is greater than the length of the support rod (1303).

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