CN214216117U

CN214216117U - Tail shaft sealing device for ship

Info

Publication number: CN214216117U
Application number: CN202023250091.4U
Authority: CN
Inventors: 朱力行
Original assignee: Guangdong Tianyu Yacht Co ltd
Current assignee: Guangdong Tianyu Yacht Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-09-17
Anticipated expiration: 2030-12-29

Abstract

The utility model relates to a sealed technical field of tail-shaft specifically is a tail-shaft sealing device for boats and ships, which comprises a sealing body, the seal, it has first sealing washer to inlay on the seal lateral wall, it has the tail-shaft even to slide in the seal body, it has the second sealing washer to inlay on the shaft hole inner wall, second sealing washer inside wall and the laminating of tail-shaft outside wall mutually, be equipped with the stopper on the tail-shaft lateral wall, the third sealing washer has been inlayed to the stopper bottom, stopper and third sealing washer bottom and the laminating of seal top, seal lateral wall top is equipped with the connection pad, the connection pad top is equipped with the fixed block, open the fixed block bottom has the cavity, be equipped with compression spring in the cavity. This tail-shaft sealing device for boats and ships increases the leakproofness between seal and boats and ships junction through first sealing washer, increases the leakproofness between seal and tail-shaft through the second sealing washer, laminates the extrusion of third sealing washer on the seal through compression spring, further increases the leakproofness between tail-shaft and seal through the third sealing washer.

Description

Tail shaft sealing device for ship

Technical Field

The utility model relates to a sealed technical field of tail-shaft specifically is a tail-shaft sealing device for boats and ships.

Background

The ship tail shaft is a rotating shaft used for being connected with a propeller on a ship, the tail shaft is usually soaked in water in the use process of the ship, a sealing device is generally required to be installed, moisture is prevented from entering the inside of the ship through the tail shaft, the existing tail shaft sealing device is simple in structure, mostly, a sealing ring is arranged at the connecting position of the ship and the tail shaft, and the sealing ring is easy to damage in the use process, so that the sealing effect of the sealing ring is influenced, and further the normal use of the ship is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a tail-shaft sealing device for boats and ships to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a tail shaft sealing device for a ship comprises a sealing body with a cylindrical structure, wherein a through shaft hole is formed in the middle position of the top of the sealing body, two first grooves which are parallel to each other are formed in the outer side wall of the sealing body, first sealing rings are embedded in the first grooves, the outer diameter of each first sealing ring is matched with the outer diameter of the sealing body, a tail shaft is connected in the shaft hole in a sliding mode, two ends of the tail shaft extend to the outside of the shaft hole, two second grooves which are parallel to each other are formed in the inner wall of the shaft hole, second sealing rings are embedded in the second grooves, the inner diameter of each second sealing ring is matched with the outer diameter of the tail shaft, the inner side wall of each second sealing ring is attached to the outer side wall of the tail shaft, a limiting block is arranged above the sealing body, and the bottom of the limiting block is attached to the top of the sealing body, the sealing structure is characterized in that a third groove is formed in the bottom of the limiting block and is close to the edge of the outer ring of the limiting block, a third sealing ring is inlaid in the third groove, the bottom of the third sealing ring is attached to the top of the sealing body, a connecting disc is arranged at the edge of the top of the outer side wall of the sealing body, a fixing block is arranged outside the tail shaft at the top of the connecting disc, the tail shaft penetrates through the fixing block upwards, a cavity is formed in the middle of the bottom of the fixing block, the inner diameter of the cavity is matched with the outer diameter of the limiting block, a compression spring is arranged in the cavity, the upper end of the compression spring is attached to the top of the cavity, and the lower end of the compression spring is attached to the top of the limiting block.

Preferably, the outer diameter of the tail shaft is matched with the inner diameter of the shaft hole, and the tail shaft penetrates through the shaft hole and is connected with the shaft hole in a sliding mode.

Preferably, the limiting block and the tail shaft are of an integrally formed structure.

Preferably, the connection pad is of an integrally formed structure with the sealing body, and a plurality of mounting holes which are distributed in an annular array and penetrate through are formed in the top of the connection pad and close to the peripheral edge of the top of the connection pad.

Preferably, the fixing block is fixed on the connecting disc through screw locking.

Preferably, a through hole is formed in the middle of the top of the cavity in a penetrating mode, the outer diameter of the tail shaft is matched with the inner diameter of the through hole, and the tail shaft penetrates through the through hole in the upward direction.

Compared with the prior art, the beneficial effects of the utility model are that:

this tail-shaft sealing device for boats and ships, be equipped with a plurality of first sealing washer and second sealing washer on seal lateral wall and inside wall respectively, increase the leakproofness between seal and the boats and ships junction through first sealing washer, increase the leakproofness between seal and the tail-shaft through the second sealing washer, be equipped with the stopper simultaneously on the tail-shaft, the stopper bottom is equipped with the third sealing washer, be equipped with compression spring simultaneously at the stopper top, through compression spring with stopper and third sealing washer extrusion laminating all the time on the seal, further increase the leakproofness between tail-shaft and the seal through the third sealing washer, prevent that the moisture gets into inside the boats and ships through seal and boats and ships junction and tail-shaft and seal junction in the use, influence the normal use of boats and ships.

Drawings

FIG. 1 is a sectional view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of the sealing body of the present invention;

FIG. 3 is a cross-sectional view of the structure of the middle tail shaft of the present invention;

fig. 4 is a structural section view of the middle fixing block of the present invention.

In the figure:

1. a seal body; 10. a shaft hole; 11. a first groove; 12. a second groove; 13. a connecting disc; 130. mounting holes;

2. a first seal ring;

3. a tail shaft; 30. a limiting block; 300. a third groove;

4. a second seal ring;

5. a third seal ring;

6. a fixed block; 60. a cavity; 61. a through hole;

7. compressing the spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", "third" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1-4, the present invention provides a technical solution:

a tail shaft sealing device for a ship comprises a sealing body 1 with a cylindrical structure, wherein a through shaft hole 10 is formed in the middle position of the top of the sealing body 1, two first grooves 11 which are parallel to each other are formed in the outer side wall of the sealing body 1, a tail shaft 3 is connected in the shaft hole 10 in a sliding mode, the outer diameter of the tail shaft 3 is matched with the inner diameter of the shaft hole 10, the tail shaft 3 penetrates through the shaft hole 10 and is connected with the shaft hole 10 in a sliding mode, two ends of the tail shaft 3 extend to the outer portion of the shaft hole 10, two second grooves 12 which are parallel to each other are formed in the inner wall of the shaft hole 10, a second sealing ring 4 is embedded in each second groove 12, the inner diameter of each second sealing ring 4 is, the inner side wall of the second sealing ring 4 is jointed with the outer side wall of the tail shaft 3, the second sealing ring 4 is made of rubber, the sealing performance between the tail shaft 3 and the sealing body 1 is improved through the second sealing ring 4, and water seepage is prevented.

In the embodiment, a limiting block 30 is arranged on the outer side wall of the tail shaft 3 and above the sealing body 1, the bottom of the limiting block 30 is attached to the top of the sealing body 1, a third groove 300 is formed in the position, close to the outer edge of the outer ring, of the bottom of the limiting block 30, a third sealing ring 5 is embedded in the third groove 300, the bottom of the third sealing ring 5 is attached to the top of the sealing body 1, a connecting disc 13 is arranged at the edge of the top of the outer side wall of the sealing body 1, a fixing block 6 is arranged on the top of the connecting disc 13 and outside the tail shaft 3, the tail shaft 3 upwards penetrates through the fixing block 6, a cavity 60 is formed in the middle position of the bottom of the fixing block 6, a through hole 61 is formed in the middle position of the top of the cavity 60, the outer diameter of the tail shaft 3 is matched with the inner diameter of the through hole 61, the inner diameter of the cavity 60 is matched with the outer diameter of the limiting block 30, a compression spring 7 is arranged in the cavity 60, the upper end of the compression spring 7 is attached to the top of the cavity 60, the lower extreme laminates mutually with stopper 30 top, and third sealing washer 5 adopts rubber to make, through compression spring 7's elastic action, extrudees stopper 30 and third sealing washer 5 all the time and laminates on seal 1, further increases the leakproofness between tail shaft 3 and the seal 1 through third sealing washer 5, prevents the infiltration.

Besides, inlay in first recess 11 and have first sealing washer 2, the external diameter size of first sealing washer 2 and the external diameter size looks adaptation of sealing 1, first sealing washer 2 adopts rubber to make, increases the leakproofness between sealing 1 and the boats and ships junction through first sealing washer 2, prevents to ooze water.

Further, a plurality of mounting holes 130 which are distributed in an annular array and penetrate through are formed in the top of the connecting disc 13 close to the peripheral edge of the connecting disc, so that the connecting disc 13 can be conveniently mounted and fixed on a ship through the mounting holes 130, and the whole device is further mounted and fixed.

Secondly, fixed block 6 passes through screw locking to be fixed on connection pad 13, and screw locking is fixed and is convenient for install, is convenient for open fixed block 6 simultaneously in the later stage use, overhauls the maintenance to the inside third sealing washer 5 of fixed block 6 and compression spring 7.

Specifically, stopper 30 is the integrated into one piece structure with tail shaft 3, and connection pad 13 is the integrated into one piece structure with seal 1, and the integrated into one piece structure is convenient for produce, and the product size precision of producing is high, save raw materials, and integrated into one piece stable in structure, non-deformable damages in the use, long service life.

Before the tail shaft sealing device for the ship is used, a worker firstly checks the integrity of the device and whether the connection of each part is firm; then the connecting disc 13 is installed and fixed on the ship through the installation hole 130, and the whole device is further installed and fixed; in the use, increase the leakproofness between seal 1 and the boats and ships junction through first sealing washer 2, increase the leakproofness between tail shaft 3 and the seal 1 through second sealing washer 4, simultaneously through compression spring 7's elastic action, extrude stopper 30 and third sealing washer 5 the laminating all the time on seal 1, further increase the leakproofness between tail shaft 3 and the seal 1 through third sealing washer 5, prevent that moisture from getting into inside the boats and ships through seal 1 and boats and ships junction and tail shaft 3 and seal 1 junction.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a tail shaft sealing device for boats and ships which characterized in that: the sealing structure comprises a sealing body (1) with a cylindrical structure, wherein a penetrating shaft hole (10) is formed in the middle position of the top of the sealing body (1), two first grooves (11) which are parallel to each other are formed in the outer side wall of the sealing body (1), a first sealing ring (2) is embedded in each first groove (11), the outer diameter of each first sealing ring (2) is matched with the outer diameter of the sealing body (1), a tail shaft (3) is connected to the shaft hole (10) in a sliding mode, two ends of each tail shaft (3) extend to the outer portion of the shaft hole (10), two second grooves (12) which are parallel to each other are formed in the inner wall of the shaft hole (10), a second sealing ring (4) is embedded in each second groove (12), the inner diameter of each second sealing ring (4) is matched with the outer diameter of each tail shaft (3), and the inner side wall of each second sealing ring (4) is attached to the outer side wall of each tail shaft (3), the tail shaft (3) outer side wall is located above the sealing body (1) and is provided with a limiting block (30), the bottom of the limiting block (30) is attached to the top of the sealing body (1), a third groove (300) is formed in the position, close to the edge of the outer ring, of the bottom of the limiting block (30), a third sealing ring (5) is embedded in the third groove (300), the bottom of the third sealing ring (5) is attached to the top of the sealing body (1), a connecting disc (13) is arranged at the edge of the top of the outer side wall of the sealing body (1), the top of the connecting disc (13) is located outside the tail shaft (3) and is provided with a fixed block (6), the tail shaft (3) upwards penetrates through the fixed block (6), a cavity (60) is formed in the middle position of the bottom of the fixed block (6), the inner diameter of the cavity (60) is matched with the outer diameter of the limiting block (30), and a compression spring (7) is arranged in the cavity (60), the upper end of the compression spring (7) is attached to the top of the cavity (60), and the lower end of the compression spring is attached to the top of the limiting block (30).

2. The seal device for a stern shaft of a ship according to claim 1, wherein: the outer diameter of the tail shaft (3) is matched with the inner diameter of the shaft hole (10), and the tail shaft (3) penetrates through the shaft hole (10) and is in sliding connection with the shaft hole.

3. The seal device for a stern shaft of a ship according to claim 1, wherein: the limiting block (30) and the tail shaft (3) are of an integrally formed structure.

4. The seal device for a stern shaft of a ship according to claim 1, wherein: the connecting disc (13) and the sealing body (1) are of an integrated structure, and a plurality of mounting holes (130) which are distributed in an annular array and penetrate through are formed in the top of the connecting disc (13) and are close to the edges of the periphery of the connecting disc.

5. The seal device for a stern shaft of a ship according to claim 1, wherein: and the fixed block (6) is fixed on the connecting disc (13) through screw locking.

6. The seal device for a stern shaft of a ship according to claim 1, wherein: a through hole (61) is formed in the middle of the top of the cavity (60), the outer diameter of the tail shaft (3) is matched with the inner diameter of the through hole (61), and the tail shaft (3) penetrates through the through hole (61) upwards.