Ship intermediate bearings that can be lubricated stably

Abstract

The present invention discloses a ship intermediate bearing capable of stable lubrication, comprising an intermediate bearing seat, left and right bushings, and an oil ring. An oil supply sleeve is disposed between the left and right bushings, operating synchronously with the ship intermediate shaft. Gear teeth are evenly distributed along the outer circumference of the oil supply sleeve, and oil supply chute corresponding to the inter-tooth portion between two adjacent gear teeth is disposed at each end of the oil supply sleeve. The oil ring is integrally connected to the oil supply sleeve by an outer ring and an inner ring. Internal teeth meshing with the gear teeth are evenly distributed along the central portion of the inner wall of the inner ring. A plurality of circumferentially distributed through-holes are disposed on the inner wall of the oil ring, located outside both ends of the internal teeth. A lubricating oil groove is disposed on the inner wall of the bushing, starting at the highest point of the inner end and ending at the outer end. A notch is disposed at the highest point of the inner end of the bushing, communicating with the lubricating oil groove. The ship intermediate bearing capable of stable lubrication of the present invention can increase the oil flow of the oil ring and continuously and stably supply oil between the intermediate shaft and bushing.

Description

Technical Field

[0001] The invention relates to a marine accessory, in particular to a support for an intermediate shaft of a marine power system. Background Art

[0002] The intermediate shaft in a ship's propulsion system is supported by an intermediate bearing. The intermediate bearing typically includes an intermediate bearing seat, on which the intermediate shaft is supported by two left and right bushings. Lubrication between the intermediate shaft and the left and right bushings is typically provided by an oil ring. An oil ring, with a diameter larger than the intermediate shaft, is placed on the intermediate shaft between the left and right bushings. Driven by the operation of the intermediate shaft, the oil ring draws lubricating oil from the oil reservoir within the intermediate bearing seat onto the intermediate shaft, where it flows to the journals mating with the bushings for lubrication. This simple structure achieves a certain lubrication effect. However, because the oil ring rotates due to the frictional force of the line contact between the oil ring and the intermediate shaft, the oil ring, once coated with lubricant, cannot guarantee continuous and stable rotation and transfer of lubricant to the intermediate shaft. Furthermore, conventional oil rings have a rectangular cross-section, limiting the amount of lubricant that can adhere to their surface. Consequently, reliable lubrication between the intermediate shaft and the bushings cannot be guaranteed. Summary of the Invention

[0003] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a ship intermediate bearing that can be stably lubricated, which can increase the oil delivery of the oil ring and continuously and stably supply oil to the space between the intermediate shaft and the bushing.

[0004] In order to solve the above technical problems, the present invention provides a ship intermediate bearing that can be stably lubricated, including an intermediate bearing seat, left and right bushings installed on the intermediate bearing seat, and an oil ring located between the left and right bushings. An oil supply sleeve that runs synchronously with the ship intermediate shaft is also provided between the left and right bushings. The two ends of the oil supply sleeve are respectively close to the inner end faces of the left and right bushings. Gear teeth are evenly distributed on the outer circumference of the oil supply sleeve. Oil supply chute grooves are respectively provided at both ends of the oil supply sleeve. The oil supply chute corresponds to the tooth area between two adjacent gear teeth. The oil ring sleeve Hanging on the oil supply sleeve, the oil ring is connected as a whole by an oil ring outer ring and an oil ring inner ring which are connected with each other. Internal teeth meshing with the gear teeth are evenly distributed on the inner wall of the inner ring of the oil ring. The internal teeth are located in the middle of the length direction of the oil ring. A number of through holes are also provided on the ring wall of the inner ring of the oil ring. The through holes are respectively located on the outside of the two ends of the internal teeth and are evenly distributed along the circumferential direction; a lubricating oil groove is provided on the inner wall of the shaft liner. The lubricating oil groove starts from the highest point of the inner end of the shaft liner and ends at the outer end of the shaft liner. A notch connected to the lubricating oil groove is provided at the highest point of the inner end of the shaft liner.

[0005] In the above structure, since an oil supply sleeve is provided between the left and right bushings and runs synchronously with the ship's intermediate shaft, the two ends of the oil supply sleeve are respectively close to the inner end faces of the left and right bushings, gear teeth are evenly distributed on the outer circumference of the oil supply sleeve, and oil supply chute is provided at both ends of the oil supply sleeve, and the oil supply chute corresponds to the position between the teeth of two adjacent gear teeth. The oil supply sleeve can drive the oil ring to operate stably through the gear teeth evenly distributed on its outer circumference, ensuring that the oil ring can continuously transmit the lubricating oil to the oil supply sleeve. After the lubricating oil is transmitted to the oil supply sleeve, it will flow into the position between the upper gear teeth, and flow to the corresponding side of the bushing and the ship's intermediate shaft through the oil supply chute at both ends of the oil supply sleeve, thereby ensuring the lubrication effect.

[0006] The cam is secured to the oil pump by means of a camming mechanism which allows the oil pump to move freely along the camming mechanism, thereby ensuring that the camming mechanism is in a condition where the camming mechanism is in a condition where the oil pump ...

[0007] Also, since a lubricating oil groove is provided on the inner wall of the shaft liner, the lubricating oil groove starts from the highest point of the inner end of the shaft liner and ends at the outer end of the shaft liner, and a notch connected to the lubricating oil groove is provided at the highest point of the inner end of the shaft liner, the notch connected to the lubricating oil groove provided at the highest point of the inner end of the shaft liner will be opposite to the oil feed bevel at the opposite end of the oil feed sleeve, and the lubricating oil flowing into the inter-tooth portion of the gear teeth on the upper part of the oil feed sleeve passes through the oil feed bevels at both ends of the oil feed sleeve and the notch on the shaft liner on the corresponding side and flows into the lubricating oil groove on the shaft liner. The lubricating oil groove starting from the highest point of the inner end of the shaft liner and ending at the outer end of the shaft liner ensures that the lubricating oil can flow through the entire axial length of the contact between the shaft liner and the intermediate shaft, thereby ensuring that the lubricating oil can be transported to between the intermediate shaft and the shaft liner.

[0008] In a preferred embodiment of the present invention, the oil supply sleeve is fixedly attached to the ship's intermediate shaft via a set screw. This embodiment allows the oil supply sleeve to be easily and conveniently attached to the intermediate shaft at a desired position, ensuring that the oil supply sleeve operates synchronously with the ship's intermediate shaft.

[0009] In another preferred embodiment of the present invention, the bottom of the oil feed chute slopes from the bottom of the gear teeth between the gear teeth toward the opening of the oil feed sleeve inner bore. This embodiment allows the lubricating oil to flow more directly into the lubricating oil groove entrance on the inner side of the liner adjacent to the oil feed sleeve.

[0010] In another preferred embodiment of the present invention, the width of the upper end of the oil chute corresponds to the width between the gear teeth, and the intersection of the two side walls of the oil chute and the end surface of the oil sleeve forms a V shape. This embodiment allows the lubricating oil to be concentrated and injected into the lubricating oil trough entrance.

[0011] In a further preferred embodiment of the present invention, the gear teeth are teeth of an involute external gear, and the internal teeth are teeth of an involute internal gear having the same module as the gear teeth. With this embodiment, the gear teeth and internal teeth form a universal internally meshing involute gear pair, facilitating manufacturing and forming.

[0012] In another preferred embodiment of the present invention, two oil ring retaining rings are provided on the oil feed sleeve. The oil ring retaining rings are inserted into retaining ring grooves on the oil feed sleeve, with the internal teeth located between the two oil ring retaining rings. With this embodiment, the oil ring retaining rings can limit the oil ring's axial position in the intermediate shaft, ensuring stable operation of the oil ring.

[0013] In a further preferred embodiment of the present invention, the through-hole opening on the outer wall of the oil ring inner ring is larger than the through-hole opening on the inner wall of the oil ring inner ring. With this embodiment, the recess formed by the through-hole, when the oil ring inner ring is nested with the oil ring outer ring, has a small opening and a large base, allowing it to store more lubricating oil and ensuring that a larger portion of the stored lubricating oil is transferred to the upper portion of the oil supply sleeve.

[0014] In a further preferred embodiment of the present invention, the through hole is a truncated cone or a quadrangular cone. This embodiment satisfies the requirement that the through hole opening on the outer wall of the oil ring inner ring is larger than the through hole opening on the inner wall of the oil ring inner ring, and the shape is relatively simple, making it easy to manufacture.

[0015] In another further preferred embodiment of the present invention, the lubricating oil groove circumvents a quarter of the shaft liner and terminates at the outer end of the shaft liner. With this embodiment, lubricating oil entering the lubricating oil groove entrance can flow smoothly through the entire axial length of the shaft liner under its own weight, ensuring effective lubrication.

[0016] In another preferred embodiment of the present invention, the lubricating oil groove circumvents half the length of the bushing and terminates at the outer end of the bushing. With this embodiment, lubricating oil entering the lubricating oil groove can flow more smoothly through the entire axial length of the bushing under its own weight, ensuring effective lubrication. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The ship intermediate bearing capable of stable lubrication of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a structural schematic diagram of a specific embodiment of a ship intermediate bearing capable of stable lubrication according to the present invention;

[0019] Figure 2 yes Figure 1 A partial enlarged view of position I in the structure shown;

[0020] Figure 3 yes Figure 1 A schematic diagram of the structure of the oil ring in the structure shown;

[0021] Figure 4 yes Figure 3 Side view of

[0022] Figure 5 It is a structural diagram of the oil supply sleeve in the structure shown in 1.

[0023] In the figure: 1-intermediate bearing seat, 2-oil ring, 3-oil supply sleeve, 4-shaft liner, 5-lubricating oil groove, 6-notch, 7-intermediate shaft, 8-oil supply inclined groove, 9-inner tooth, 10-gear tooth, 11-oil ring locating ring, 12-locating ring groove, 13-through hole, 14-oil ring outer ring, 15-oil ring inner ring, 16-between teeth. DETAILED DESCRIPTION

[0024] exist Figure 1 and Figure 2 In the illustrated ship intermediate bearing capable of stable lubrication, the intermediate bearing seat 1 serves as the support base for the ship's intermediate shaft 7. Two left and right bushings 4 are mounted on the intermediate bearing seat 1. Seal rings, which seal against the intermediate shaft 7, are located on the outer walls of the intermediate bearing seat 1. Lubricating oil is stored in the inner bottom of the intermediate bearing seat 1. An oil supply sleeve 3, operating synchronously with the ship's intermediate shaft 7, is located between the left and right bushings 4. The oil supply sleeve 3 is fixed to the ship's intermediate shaft 7 via set screws, with its ends abutting the inner end faces of the left and right bushings 4, respectively. (See [Note: The oil supply sleeve 3 is a typo in the original text.]) Figure 5Gear teeth 10 are evenly distributed on the outer circumference of the oil supply sleeve 3. The gear teeth 10 are teeth of an involute external gear. Oil supply chute grooves 8 are respectively provided at both ends of the oil supply sleeve 3. The oil supply chute 8 corresponds to the position 16 between the teeth of two adjacent gear teeth 10. The bottom of the oil supply chute 8 is inclined from the bottom of the tooth space 16 between the gear teeth 10 to the opening of the inner hole of the oil supply sleeve 3. The width of the upper end of the oil supply chute 8 corresponds to the width of the tooth space 16 between the gear teeth 10. The intersection line of the two side walls of the oil supply chute 8 and the end face of the oil supply sleeve 3 forms a V shape. The diameter of the oil ring 2 located between the left and right bushings 4 is larger than the outer diameter of the oil supply sleeve 3. The oil ring 2 is connected as a whole by an oil ring outer ring 14 and an oil ring inner ring 15 that are connected to each other. Internal teeth 9 meshing with the gear teeth 10 are evenly distributed on the inner wall of the oil ring inner ring 15. The internal teeth 9 are located in the middle of the length direction of the oil ring 2. The internal teeth 9 are teeth of an involute internal gear with the same module as the gear teeth 10. The oil ring 2 is hung on the oil supply sleeve 3. The internal teeth 9 mesh with the gear teeth 10 to form an internal meshing gear pair. Two oil ring locating rings 11 are provided on the oil supply sleeve 3. The oil ring locating ring 11 is preferably an open steel wire ring. The oil ring locating ring 11 is inserted into the locating ring groove 12 on the oil supply sleeve 3, and the internal teeth 9 are located between the two oil ring locating rings 11. A plurality of through holes 13 are provided on the ring wall of the oil ring inner ring 15. The plurality of through holes 13 are respectively located outside the two ends of the inner teeth 9 and are evenly distributed along the circumferential direction. The openings of the through holes 13 on the outer wall of the oil ring inner ring 15 are larger than the openings of the through holes 13 on the inner wall of the oil ring inner ring 15. The through holes 13 are preferably quadrangular cone-shaped holes. Of course, they can also be truncated cone-shaped holes or holes in other forms. The oil ring inner ring 15 is preferably made of a lightweight plastic such as nylon by injection molding in one step. The lower part of the oil ring 2, which is hung on the oil supply sleeve 3, is immersed in the lubricating oil. The oil supply sleeve 3, which rotates synchronously with the intermediate shaft 7, engages with the internal teeth formed by the gear teeth 10 and the internal teeth 9. The wheel pair drives the oil ring 2 to operate continuously and stably, and the lubricating oil is continuously transmitted to the upper part of the oil supply sleeve 3 through the pit with a large inner portion and a small outer portion that can store lubricating oil formed by the through hole 13 and the outer ring 14 of the oil ring 2; a lubricating oil groove 5 is provided on the inner wall of the shaft liner 4, and the lubricating oil groove 5 starts from the highest point of the inner end of the shaft liner 4 and ends at the outer end of the shaft liner 4. A notch 6 connected to the lubricating oil groove 5 is provided at the highest point of the inner end of the shaft liner 4. As a preferred embodiment, the path of the lubricating oil groove 5 bypasses a quarter of a circle of the shaft liner 4 and ends at the outer end of the shaft liner 4. The path of the lubricating oil groove 5 can also be as follows Figure 1 The dotted line shows that the lubricating oil that goes around the half circle of the liner 4 finally reaches the outer end of the liner 4. The lubricating oil is continuously transmitted by the oil ring 2 to the upper part of the oil supply sleeve 3 through the pit that can store lubricating oil and flows into the position 16 between the teeth of the gear 10. Then, it flows through the oil supply inclined grooves 8 at both ends of the oil supply sleeve 3 from the highest point of the inner end of the liner 4 on the corresponding side and is connected to the lubricating oil groove 5 on the liner 4. Into the lubricating oil groove 5 on the liner 4, it relies on its own weight to flow through the entire axial length of the liner 4 relatively smoothly, ensuring a good lubrication effect.

[0025] The above only lists some preferred embodiments of the present invention, but the present invention is not limited thereto, and many improvements and modifications can be made. As long as the improvements and modifications are made on the basis of the basic principles of the present invention, they should be considered to fall within the scope of protection of the present invention.

Claims

1. A ship intermediate bearing capable of stable lubrication, comprising an intermediate bearing seat (1), two left and right bushings (4) mounted on the intermediate bearing seat (1), and an oil ring (2) located between the left and right bushings (4), characterized in that: An oil supply sleeve (3) is provided between the left and right bushings (4) and is synchronously operated with the ship's intermediate shaft. The two ends of the oil supply sleeve (3) are respectively close to the inner end faces of the left and right bushings (4). Gear teeth (10) are evenly distributed on the outer periphery of the oil supply sleeve (3). Oil supply inclined grooves (8) are respectively provided at the two ends of the oil supply sleeve (3). The oil supply inclined grooves (8) correspond to the tooth spaces (16) between the two adjacent gear teeth (10). The oil ring (2) is sleeved on the oil supply sleeve (3). The oil ring (2) is connected as a whole by an oil ring outer ring (14) and an oil ring inner ring (15) that are sleeved together. Internal teeth (9) that mesh with the gear teeth (10) are evenly distributed on the inner wall of the oil ring inner ring (15). The internal teeth (9) Located in the middle of the length direction of the oil ring (2), a plurality of through holes (13) are further provided on the ring wall of the inner ring (15) of the oil ring. The plurality of through holes (13) are respectively located outside the two ends of the inner teeth (9) and are evenly distributed along the circumferential direction. A lubricating oil groove (5) is provided on the inner wall of the shaft liner (4). The lubricating oil groove (5) starts from the highest point of the inner end of the shaft liner (4) and ends at the outer end of the shaft liner (4). A notch (6) communicating with the lubricating oil groove (5) is provided at the highest point of the inner end of the shaft liner (4). The oil supply sleeve (3) is fixedly connected to the intermediate shaft of the ship by means of a set screw. The bottom of the oil supply inclined groove (8) is inclined from the bottom of the tooth space (16) between the gear teeth (10) to the opening of the inner hole of the oil supply sleeve (3).

2. The ship intermediate bearing capable of stable lubrication according to claim 1, characterized in that: The width of the upper end of the oil feeding chute (8) corresponds to the width of the space (16) between the gear teeth (10), and the intersection lines of the two side walls of the oil feeding chute (8) and the end surface of the oil feeding sleeve (3) form a V shape.

3. The ship intermediate bearing capable of stable lubrication according to claim 1, characterized in that: The gear teeth (10) are teeth of an involute external gear, and the internal teeth (9) are teeth of an involute internal gear having the same module as the gear teeth (10).

4. The ship intermediate bearing capable of stable lubrication according to claim 1, characterized in that: Two oil ring locating rings (11) are provided on the oil supply shaft sleeve (3). The oil ring locating rings (11) are inserted into the locating ring grooves (12) on the oil supply shaft sleeve (3). The internal teeth (9) are located between the two oil ring locating rings (11).

5. The ship intermediate bearing capable of stable lubrication according to claim 1, characterized in that: The opening of the through hole (13) on the outer wall of the oil ring inner ring (15) is larger than the opening of the through hole (13) on the inner wall of the oil ring inner ring (15).

6. The ship intermediate bearing capable of stable lubrication according to claim 5, characterized in that: The through hole (13) is a truncated cone-shaped hole or a quadrangular cone-shaped hole.

7. The ship intermediate bearing capable of stable lubrication according to claim 1, characterized in that: The path of the lubricating oil groove (5) goes around a quarter of the circle of the shaft liner (4) and ends at the outer end of the shaft liner (4).

8. The ship intermediate bearing capable of stable lubrication according to claim 1, characterized in that: The path of the lubricating oil groove (5) goes around half a circle of the shaft liner (4) and ends at the outer end of the shaft liner (4).

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