CN-224214693-U - Ship stern shaft sealing waterproof device

CN224214693UCN 224214693 UCN224214693 UCN 224214693UCN-224214693-U

Abstract

The utility model belongs to the technical field of ship stern axial sealing, and particularly relates to a ship stern axial sealing waterproof device which comprises a transmission shaft, wherein a shaft sleeve is arranged at the middle section of the shaft body of the transmission shaft through a bearing, a locking edge is fixedly connected onto the shaft sleeve, a shaft seal is arranged at the front section of the shaft body of the transmission shaft through a sealing bearing and is in contact with the shaft sleeve, the shaft seal is in sliding connection with the inner side of the locking edge, a sealing ring is embedded into the shaft seal, and the sealing ring is in contact with the shaft sleeve. According to the utility model, the shaft seal is additionally arranged at the front ends of the transmission shaft and the shaft sleeve, the shaft seal is provided with the sealing ring, the shaft seal is arranged on the transmission shaft through the sealing bearing, in addition, the shaft seal is internally provided with the annular cavity, and the sealing rubber is arranged at the annular cavity, so that after high-pressure air is injected into the annular cavity, the rubber expands and is kept in close contact with the transmission shaft, and meanwhile, the sealing rubber is matched with the sealing ring and the sealing bearing, so that the transmission shaft and the shaft sleeve can be sealed and waterproof in the axial direction.

Inventors

DING ZHIMIN
CHANG LIMING
KONG MING
LIU WEI
DONG SONGLI
ZHAO WEIDONG
JIANG SHIYUE
ZHANG DONGPING
LI FANG

Assignees

蓬莱中柏京鲁船业有限公司

Dates

Publication Date: 20260508
Application Date: 20250528

Claims (6)

1. A ship stern shaft sealing waterproof device comprises a transmission shaft (1) and is characterized in that a shaft sleeve (2) is mounted on the shaft body middle section of the transmission shaft (1) through a bearing, a locking edge (4) is fixedly connected to the shaft sleeve (2), a shaft seal (3) is mounted on the shaft body front section of the transmission shaft (1) through a sealing bearing, the shaft seal (3) is in conflict with the shaft sleeve (2), the shaft seal (3) is slidably connected to the inner side of the locking edge (4), a sealing ring (5) is embedded in the shaft seal (3), the sealing ring (5) is in conflict with the shaft sleeve (2), a ring cavity (6) is formed in the shaft seal (3), a rubber (7) is fixedly connected to the inner ring wall of the shaft seal (3), the position of the rubber (7) corresponds to the ring cavity (6), the rubber (7) is in conflict with the transmission shaft (1), and a locking mechanism (9) is fixedly connected to the shaft seal (3).
2. The ship stern shaft sealing waterproof device according to claim 1, wherein the shaft seal (3) is fixedly connected with a one-way valve air tap (8), and the one-way valve air tap (8) extends to the inner side of the annular cavity (6).
3. The ship stern shaft sealing waterproof device according to claim 1, wherein the locking mechanism (9) comprises a hollow shell (91) fixedly connected to a shaft seal (3), a guide rod (92) is fixedly connected to the inside of the hollow shell (91), a locking pin (93) is sleeved on the outer side of a rod body of the guide rod (92) in a sliding mode, the locking pin (93) penetrates through the hollow shell (91) and is connected with the hollow shell (91) in a sliding mode, the locking pin (93) is spliced with a locking edge (4), an inclined surface block (95) is fixedly connected to a pin body of the locking pin (93), a push pin (96) is connected to the side edge of the hollow shell (91) in a sliding mode, the push pin (96) penetrates through the hollow shell (91), and one end of the push pin (96) located on the inner side of the hollow shell (91) is in contact with the inclined surface block (95).
4. The ship stern shaft sealing waterproof device according to claim 3, wherein a spring (94) is arranged in the locking pin (93), one end of the spring (94) is fixedly connected with the guide rod (92), and the other end of the spring (94) is fixedly connected to the inner surface of the locking pin (93).
5. The stern shaft sealing waterproof device of the ship according to claim 3, wherein one end of the push pin (96) located on the outer side of the hollow shell (91) is fixedly connected with a push block (97), and the push block (97) and the push pin (96) are of an integrated structure.
6. The marine stern shaft seal waterproof device according to claim 3, wherein the pin body of the push pin (96) is fixedly connected with a magnetic ring (98), and the magnetic ring (98) is attracted with the inner surface of the hollow shell (91).

Description

Ship stern shaft sealing waterproof device Technical Field The utility model relates to the technical field of ship stern axial sealing, in particular to a ship stern axial sealing waterproof device. Background The stern shaft is also called as a tail shaft, the stern shaft is the last section of shaft in a shafting, a head end flange is connected with a middle shaft flange through a close-fit bolt, the tail end is conical and is used for installing a propeller, the stern shaft is a key ring for transmitting power in a ship power system and is connected with an engine and an important medium of the propeller, the propeller is rotated through the key ring, so that a ship can sail smoothly, and the ship stern axial sealing directly affects the normal operation and economy of the ship and machinery. According to the ship stern shaft sealing waterproof device, through the arrangement of the sealing bearing, the sealing mounting plate and the bearing sleeve and the like, the sealing mounting plate is connected with the sealing mounting plate, the sealing mounting plate can be isolated and protected, the sealing ring is sealed and protected, waterproof is achieved, meanwhile, the side of the bearing sleeve is attached to the sealing sleeve, the mounting gap of the sealing ring is staggered, waterproof performance under the rotating condition is guaranteed, the sealing mounting plate, the bearing sleeve and the sealing connecting plate are connected through bolts, convenience in disassembly and maintenance is improved, and convenience is achieved. But current boats and ships stern axial seal watertight fittings relies on sealed bearing and sealing washer to waterproof when using, and the effect is limited, simultaneously, installs easy corrosion through the bolt, and the dismouting is inconvenient, and is stable not high moreover. Therefore, improvements are needed. Disclosure of utility model The utility model aims to provide a ship stern axial sealing waterproof device, which solves the problems that the existing ship stern axial sealing waterproof device is waterproof by means of a sealing bearing and a sealing ring when in use, has limited effect, and is easy to rust, inconvenient to assemble and disassemble and unstable through bolt installation. In order to achieve the purpose, the technical scheme is that the ship stern shaft sealing waterproof device comprises a transmission shaft, wherein a shaft sleeve is arranged in the middle section of the shaft body of the transmission shaft through a bearing, a locking edge is fixedly connected to the shaft sleeve, a shaft seal is arranged in the front section of the shaft body of the transmission shaft through a sealing bearing and is in conflict with the shaft sleeve, the shaft seal is slidably connected to the inner side of the locking edge, a sealing ring is embedded into the shaft seal and is in conflict with the shaft sleeve, an annular cavity is formed in the shaft seal, a rubber is fixedly connected to the inner ring wall of the shaft seal, the position of the rubber corresponds to the annular cavity, the rubber is in conflict with the transmission shaft, and a locking mechanism is fixedly connected to the shaft seal. Preferably, the shaft seal is fixedly connected with a check valve air tap, and the check valve air tap extends to the inner side of the annular cavity. The air nozzle of the one-way valve can be used for injecting air into the annular cavity. Preferably, the locking mechanism comprises a hollow shell fixedly connected to the shaft seal, a guide rod is fixedly connected to the inside of the hollow shell, a locking pin is sleeved on the outer side of a rod body of the guide rod in a sliding mode, the locking pin penetrates through the hollow shell and is in sliding connection with the hollow shell, the locking pin is connected with a locking edge in an inserting mode, an inclined surface block is fixedly connected to a pin body of the locking pin, a push pin is connected to the side edge of the hollow shell in a sliding mode, the push pin penetrates through the hollow shell, and one end, located on the inner side of the hollow shell, of the push pin abuts against the inclined surface block. Through the setting of locking mechanism, have the effect that promotes stability to the installation back bearing seal. Preferably, a spring is arranged in the locking pin, one end of the spring is fixedly connected with the guide rod, and the other end of the spring is fixedly connected with the inner surface of the locking pin. Through the setting of locking mechanism, not only be convenient for the installation of bearing seal, have the effect that improves to its stability after installing simultaneously. Preferably, one end of the push pin, which is positioned outside the hollow shell, is fixedly connected with a push block, and the push block and the push pin are of an integrated structure. By the arrangement of the pushing block, pushing of the pushin