Marine carbon fiber transmission shaft structure

Abstract

The utility model provides a marine carbon fiber transmission shaft structure, and belongs to the technical field of transmission shafts. The problem that in the prior art, a transmission shaft is insufficient in structural strength is solved. The steering device comprises a composite shaft, two coupling flanges, two flange plates and a steering mechanism, the coupling flanges extend into the composite shaft and are fixedly connected with the composite shaft, and the steering mechanism comprises a first connecting pin, a second connecting pin, a steering seat, a first bolt and a second bolt. An upper through hole and a lower through hole are formed in the upper end and the lower end of the steering seat respectively, the first connecting foot and the second connecting foot are connected with the upper through hole and the lower through hole respectively, a plurality of axial connecting holes are formed in the flange plate, and the first bolt penetrates through the first connecting foot and the axial connecting holes to fixedly connect the steering mechanism with the flange plate. A plurality of circumferential connecting holes are formed in the outer side face of the coupling flange, and second bolts penetrate through the second connecting feet and the circumferential connecting holes to fixedly connect the steering mechanism with the coupling flange. The utility model has the advantages of higher structural strength and better impact buffering effect.

Description

Technical Field

[0001] This utility model belongs to the field of transmission shaft technology and relates to a marine carbon fiber transmission shaft structure. Background Technology

[0002] The application of carbon fiber drive shafts in ships has shown many advantages, providing new directions for improving ship performance and optimizing design. Carbon fiber has a low density, which can significantly reduce the weight of the drive shaft, reduce the overall load on the ship, and improve fuel efficiency and speed.

[0003] Chinese patent publication number CN220668186U discloses a carbon fiber drive shaft structure. One end of the drive shaft has a ball cage connected to a reducer via a ball cage flange and bolts to achieve power input. The ball cage is connected to one end of a splined shaft via an involute internal spline, and the other end of the splined shaft is connected to the ball cage at the other end of the drive shaft via an involute spline to achieve power transmission. The other end of the ball cage is connected to a wheel hub to achieve power output. Bearings are installed between the ball cage outer sleeves of the ball cages at both ends of the drive shaft and the two ends of the splined shaft. The ball cage flanges of the ball cages at both ends and the middle section of the splined shaft are made of carbon fiber material.

[0004] In the carbon fiber drive shaft structure provided by this patent, the ball cage flange and the ball cage outer sleeve, and the middle section of the spline shaft and the spline shaft are engaged by a convex and groove winding. The root of the convex and groove is prone to stress concentration points. Especially in carbon fiber materials, local cracking may occur due to vibration or impact, which may lead to the failure of the overall structure. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a marine carbon fiber drive shaft structure.

[0006] The objective of this utility model can be achieved through the following technical solution: A marine carbon fiber drive shaft structure includes a composite shaft, a coupling flange, a flange plate, and a steering mechanism. There are two coupling flanges and flange plates. The coupling flange extends into the composite shaft and is fixedly connected to it. The steering mechanism includes a first connecting foot, a second connecting foot, a steering seat, a first bolt, and a second bolt. The upper and lower ends of the steering seat are respectively provided with an upper through hole and a lower through hole, which are oriented at 90°. The first connecting foot and the second connecting foot are respectively connected to the upper and lower through holes. The flange plate has several axial connecting holes. The first bolt passes through the first connecting foot and the axial connecting holes to fix the steering mechanism to the flange plate. The outer side of the coupling flange has several circumferential connecting holes. The second bolt passes through the second connecting foot and the circumferential connecting holes to fix the steering mechanism to the coupling flange.

[0007] In the above-mentioned marine carbon fiber drive shaft structure, a flexible ring is fixedly fitted on the outer side of the first connecting foot, and a fixing washer is fitted on the first connecting foot on one side of the flexible ring.

[0008] In the above-mentioned marine carbon fiber drive shaft structure, an elastic bushing is fixedly fitted on the outer side of the second connecting foot, and the elastic bushing is installed between the second connecting foot and the lower through hole.

[0009] In the above-mentioned marine carbon fiber drive shaft structure, a clamping block is sleeved and fixed near the end of the composite shaft.

[0010] In the above-mentioned marine carbon fiber drive shaft structure, a sealing groove is provided in the middle of the composite shaft, and a sealing ring is fixedly connected in the sealing groove.

[0011] In the above-mentioned marine carbon fiber drive shaft structure, an axial connection groove is provided on the outer side of the axial connection hole of the flange, and a first connection protrusion is formed at the end of the first connection foot. The first connection protrusion extends into the axial connection groove and fits tightly.

[0012] In the above-mentioned marine carbon fiber drive shaft structure, a circumferential connecting groove is provided on the outer side of the circumferential connecting hole of the coupling flange, and a second connecting protrusion is formed at the end of the second connecting leg, and the second connecting protrusion is tightly fitted with the circumferential connecting groove.

[0013] Compared with the prior art, the marine carbon fiber drive shaft structure provided by this utility model has the following beneficial effects: 1. The flexible ring on the outside of the first connecting foot can absorb vibration and impact, reduce vibration transmission, and the elastic bushing on the outside of the second connecting foot is installed between the connecting foot and the through hole to further buffer the impact, reduce wear between components, and improve running stability and component life; 2. The clamping block at the end of the composite shaft can prevent the connecting components from loosening, ensure stable power transmission, and the axial connecting groove of the flange and the first connecting protrusion of the first connecting foot, and the circumferential connecting groove of the coupling flange and the second connecting protrusion of the second connecting foot are tightly fitted together and fixed with the first bolt and the second bolt, which enhances the connection strength between the steering mechanism and the flange and the coupling flange, reduces the risk of loosening, and ensures the efficiency and reliability of power transmission. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the exploded structure of the steering mechanism.

[0017] In the diagram: 1. Composite shaft; 11. Sealing groove; 2. Coupling flange; 21. Circumferential connecting hole; 22. Circumferential connecting groove; 3. Flange; 31. Axial connecting hole; 32. Axial connecting groove; 4. Steering mechanism; 41. First connecting foot; 411. First connecting protrusion; 42. Second connecting foot; 421. Second connecting protrusion; 43. Steering seat; 431. Upper through hole; 432. Lower through hole; 44. First bolt; 45. Second bolt; 5. Flexible ring; 6. Fixing washer; 7. Elastic bushing; 8. Clamping block; 9. Sealing ring. Detailed Implementation

[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0019] like Figures 1 to 3 As shown, this embodiment includes a composite shaft 1, a coupling flange 2, a flange 3, and a steering mechanism 4. There are two coupling flanges 2 and two flanges 3, located at both ends of the composite shaft 1. The two coupling flanges 2 extend into the interior of both ends of the composite shaft 1 and are fixedly connected to it, forming the basic support structure of the drive shaft. A clamping block 8 is fitted and fixed near the end of the composite shaft 1. The clamping block 8 can exert a clamping force on the end of the composite shaft 1, ensuring a tight connection between the coupling flange 2 and the composite shaft 1 and preventing relative slippage. The steering mechanism 4 includes a first connecting foot 41, a second connecting foot 42, a steering seat 43, a first bolt 44, and a second bolt 45. The upper and lower ends of the steering seat 43 are respectively provided with an upper through hole 431 and a lower through hole 432, and the orientation of the upper through hole 431 and the lower through hole 432 is 90°, enabling the steering mechanism 4 to achieve a steering connection function at a specific angle. The first connecting foot 41 and the second connecting foot 42 are respectively connected to the upper through hole 431. It is connected to the lower through hole 432, forming a key component of the steering connection.

[0020] like Figures 1 to 3 As shown, flange 3 has several axial connection holes 31. The number of first connecting feet 41 and first bolts 44 is the same as the number of axial connection holes 31. The first bolts 44 pass through the first connecting feet 41 and the axial connection holes 31 to fix the steering mechanism 4 to flange 3. The outer side of coupling flange 2 has several circumferential connection holes 21 arranged in a circular array. The number of second connecting feet 42 and second bolts 45 is the same as the number of circumferential connection holes 21. The second bolts 45 pass through the second connecting feet 42 and the circumferential connection holes 21 to fix the steering mechanism 4 to coupling flange 2, thereby realizing a stable transmission connection between flange 3, steering mechanism 4 and coupling flange 2.

[0021] To elaborate further, such as Figures 1 to 3 As shown, a flexible ring 5 is fixedly fitted on the outer side of the first connecting leg 41, and a fixing washer 6 is fitted on the first connecting leg 41 on one side of the flexible ring 5. The flexible ring 5 can enhance the flexibility of the connection and adapt to the slight deformation of the drive shaft during operation. The fixing washer 6 ensures the axial positioning stability of the connecting parts and avoids loosening. An elastic bushing 7 is fixedly fitted on the outer side of the second connecting leg 42. The elastic bushing 7 is installed between the second connecting leg 42 and the lower through hole 432. Through the elastic buffering effect, it reduces the vibration and impact during the transmission process and improves the durability of the connection structure.

[0022] To elaborate further, such as Figures 1 to 3 As shown, the axial connection hole 31 of the flange 3 has an axial connection groove 32 on the outside, and the end of the first connecting foot 41 has a first connecting protrusion 411. The first connecting protrusion 411 extends into the axial connection groove 32 and is tightly fitted. Through the cooperation of the protrusion and the groove, the connection strength between the steering mechanism 4 and the flange 3 is enhanced, and circumferential slippage during bolt connection is avoided. The circumferential connection hole 21 of the coupling flange 2 has a circumferential connection groove 22 on the outside, and the end of the second connecting foot 42 has a second connecting protrusion 421. The second connecting protrusion 421 is tightly fitted with the circumferential connection groove 22. Similarly, this structure can enhance the connection stability between the steering mechanism 4 and the coupling flange 2 and ensure reliable torque transmission.

[0023] To elaborate further, such as Figure 2 As shown, a sealing groove 11 is provided in the middle of the composite shaft 1, and a sealing ring 9 is fixedly connected in the sealing groove 11. By setting the sealing ring 9, the sealing performance of the middle of the composite shaft 1 is effectively improved, preventing external moisture and impurities from entering the interior of this embodiment, and ensuring the long-term reliable operation of the transmission system.

[0024] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0025] Although this document uses a variety of terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A marine carbon fiber drive shaft structure comprising a composite shaft (1), a coupling flange (2), a flange plate (3) and a steering mechanism (4), the number of the coupling flange (2) and the flange plate (3) is two, characterized in that: The shaft coupling flange (2) extends into the composite shaft (1) and is fixedly connected with the composite shaft (1), the steering mechanism (4) comprises a first connecting leg (41), a second connecting leg (42), a steering seat (43), a first bolt (44) and a second bolt (45), upper and lower ends of the steering seat (43) are respectively provided with an upper through hole (431) and a lower through hole (432), the upper through hole (431) and the lower through hole (432) are 90°, the first connecting leg (41) and the second connecting leg (42) are connected with the upper through hole (431) and the lower through hole (432) respectively, a plurality of axial connecting holes (31) are formed in the flange plate (3), the first bolt (44) passes through the first connecting leg (41) and the axial connecting hole (31) to fixedly connect the steering mechanism (4) and the flange plate (3), a plurality of circumferential connecting holes (21) are formed in the outer side of the shaft coupling flange (2), the second bolt (45) passes through the second connecting leg (42) and the circumferential connecting hole (21) to fixedly connect the steering mechanism (4) and the shaft coupling flange (2).

2. A marine carbon fiber drive shaft structure according to claim 1, characterized in that: The first connecting leg (41) is fixedly sleeved with a flexible ring (5) on the outer side, and a fixed washer (6) is sleeved on the first connecting leg (41) on one side of the flexible ring (5).

3. A marine carbon fiber drive shaft structure according to claim 1, characterized in that: The second connecting leg (42) is fixedly sleeved with an elastic bushing (7) on the outer side, and the elastic bushing (7) is installed between the second connecting leg (42) and the lower through hole (432).

4. A marine carbon fiber drive shaft structure according to claim 1, characterized in that: The composite shaft (1) is fixedly sleeved with a clamping block (8) near the end.

5. A marine carbon fiber drive shaft structure according to claim 1, characterized in that: The composite shaft (1) is provided with a sealing groove (11) in the middle, and the sealing ring (9) is fixedly connected in the sealing groove (11).

6. A marine carbon fiber drive shaft structure according to claim 1, characterized in that: The axial connecting hole (31) of the flange plate (3) is provided with an axial connecting groove (32) on the outer side, the first connecting leg (41) is formed with a first connecting protrusion (411) at the end, and the first connecting protrusion (411) extends into the axial connecting groove (32) and is clamped and tightly fitted.

7. A marine carbon fiber drive shaft structure according to claim 1, characterized in that: The circumferential connecting hole (21) of the shaft coupling flange (2) is provided with a circumferential connecting groove (22) on the outer side, the second connecting leg (42) is formed with a second connecting protrusion (421) at the end, and the second connecting protrusion (421) is clamped and tightly fitted with the circumferential connecting groove (22).

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