Propeller for ship

Abstract

The utility model belongs to the technical field of propellers, and particularly relates to a ship propeller which comprises a propeller body, a propeller, a connecting rod and a wave suppression plate, a flange plate is fixedly connected to the top end of the connecting rod, a through hole is formed in the flange plate, a wiring channel is formed in the connecting rod, and two annular grooves are formed in the top end of the flange plate. The inner walls of the two annular grooves are fixedly connected with rubber sealing rings and annular wrapping bags correspondingly, and the annular wrapping bags are filled with negative thermal expansion filler. The negative thermal expansion filler and the rubber sealing ring are expanded at different temperatures, so that the sealing performance between the flange plate and the ship body flange is improved, and the sealing performance between the flange plate and the ship body flange can always keep stable high sealing performance in different periods; water is prevented from entering the ship body and the wiring channel due to a gap between the flange plate and the ship body flange, and the situation that the line and the propeller body are damaged due to water immersion is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of propellers, and in particular relates to a propeller for ships. Background Art

[0002] A ship is a water vehicle that mainly operates on water and is used for various purposes such as transportation, fishing, scientific investigation, military, engineering operations, etc. The propeller rotates through the propeller to push water or other media, so that the hull can move forward or backward in the water.

[0003] The thruster is usually detachably connected to the hull to facilitate maintenance of the thruster. The thruster and the hull are generally connected and fixed by a flange above the connecting rod, so that the thruster can remain installed and fixed to the hull. The connecting rod on the thruster is provided with wiring inside, so that the thruster can be connected to the control equipment in the hull. The sealing gasket between the flanges is prone to thermal expansion and contraction due to seasonal temperature, so it is easy for the two flanges to become loose. When the two flanges become loose, water can easily enter the wiring space, which can easily damage the equipment, make maintenance more difficult, and result in high costs, and affect the normal use of the thruster. Utility Model Content

[0004] The utility model provides a propeller for a ship, which has the characteristic of improving the sealing performance when the propeller is connected to the hull.

[0005] The utility model provides the following technical solution: it includes a thruster body, a propeller, a connecting rod and a wave-squeezing plate, the top of the connecting rod is fixedly connected to a flange, the flange is provided with a through hole, a wiring channel is provided in the connecting rod, the through hole corresponds to the position and size of the wiring channel, the top of the flange is provided with two annular grooves, the inner walls of the two annular grooves are respectively fixedly connected to a rubber sealing ring and an annular wrapping bag, the interior of the annular wrapping bag is filled with a negative thermal expansion filler, and the annular wrapping bag is located outside the rubber sealing ring.

[0006] Among them, a plurality of relief grooves are provided at the top of the flange, and pressure sensors are installed on the inner walls of the plurality of relief grooves.

[0007] Wherein, a rolling sensor is installed on the top of the pressure sensor, and the rolling sensor is slidably connected to the bottom of the hull connection.

[0008] Among them, two water immersion sensors are installed on the top of the flange, and the two water immersion sensors are both located between the rubber sealing ring and the annular wrapping bag.

[0009] Among them, one end of the propeller body is fixedly connected to a limiting ring, the limiting ring is sleeved on the side wall of the propeller, and the propeller is rotatably connected to the inner wall of the limiting ring.

[0010] The beneficial effects of the utility model are as follows: the negative thermal expansion filler and the rubber sealing ring expand at different temperatures, thereby increasing the sealing between the flange and the hull flange, thereby enabling the sealing between the flange and the ship flange to always maintain a stable high sealing at different times, avoiding the formation of gaps between the flange and the hull flange that lead to water ingress into the hull and the wiring channel, thereby preventing the lines and the thruster body from being damaged by water immersion, and reducing the cost expenditure caused by maintenance.

[0011] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0013] Figure 2 for Figure 1 The enlarged schematic diagram of the middle A part;

[0014] Figure 3 It is a three-dimensional enlarged exploded structural diagram of components such as a connecting rod and a flange in the utility model;

[0015] Figure 4 for Figure 3 The enlarged schematic diagram of the middle part B;

[0016] Figure 5 It is a schematic diagram of the annular wrapping bag and the three-dimensional cross-sectional exploded structure of the annular wrapping bag in the utility model.

[0017] In the figure: 1. propeller body; 11. propeller; 12. connecting rod; 13. wave suppression plate; 14. wiring channel; 2. flange; 21. perforation; 23. annular groove; 231. rubber sealing ring; 232. annular wrapping bag; 233. negative thermal expansion filler; 24. give way groove; 25. water immersion sensor; 3. pressure sensor; 31. rolling sensor; 4. limit ring. DETAILED DESCRIPTION

[0018] See also Figure 1-Figure 5The utility model provides the following technical solutions: including a propeller body 1, a propeller 11, a connecting rod 12 and a wave suppressing plate 13, the top of the connecting rod 12 is fixedly connected to a flange 2, the flange 2 is provided with a through hole 21, a wiring channel 14 is provided in the connecting rod 12, the position and size of the through hole 21 and the wiring channel 14 are corresponding, the top of the flange 2 is provided with two annular grooves 23, the inner walls of the two annular grooves 23 are respectively fixedly connected with a rubber sealing ring 231 and an annular wrapping bag 232, the inside of the annular wrapping bag 232 is filled with a negative thermal expansion filler 233, and the annular wrapping bag 232 is located outside the rubber sealing ring 231.

[0019] In this embodiment: the propeller body 1 is connected to the flange 2 through the connecting rod 12, the flange 2 and the flange on the hull are connected and fixed by a bolt group, the through hole 21 and the wiring channel 14 hole position correspond to each other, so that the connection line between the propeller body 1 and the hull can be protected and contained externally to prevent external objects from causing pulling damage to the line, the flange 2 and the flange on the hull are fitted together, so that the rubber sealing ring 231 and the annular wrapping bag 232 on the flange 2 can both contact the flange docking surface on the hull, so that the line storage environment in the wiring channel 14 and the through hole 21 can ensure sealing, the two annular grooves 23 accommodate the rubber sealing ring 231 and the annular wrapping bag 232, the two flanges squeeze the rubber sealing ring 231 and the annular wrapping bag 232, the annular wrapping bag 232 accommodates the negative thermal expansion filler 233, the rubber sealing ring 231 and the annular wrapping bag 232 are in a state of enclosing the through hole 21, and the rubber sealing ring 231 and the annular wrapping bag 232 can form Two sealing retaining rings improve the sealing performance, thereby improving the protection effect on the line and the thruster body 1. The rubber sealing ring 231 and the negative thermal expansion filler 233 will expand or shrink due to the influence of temperature. The rubber sealing ring 231 expands when heated, so that when the ship is used in a period of high temperature, the expansion of the rubber sealing ring 231 can increase the airtightness between the flange 2 and the hull flange. When the ship is used in a period of low temperature, the negative thermal expansion filler 233 can expand when the temperature drops. At this time, the negative thermal expansion filler 233 can support the annular wrapping bag 232 from the inside, so that the annular wrapping bag 232 expands, thereby increasing the sealing performance between the flange 2 and the hull flange, and then the sealing performance between the flange 2 and the ship flange can always maintain a stable high sealing performance at different times, avoiding the formation of a gap between the flange 2 and the hull flange that causes water to enter the hull and the wiring channel 14, thereby preventing the line and the thruster body 1 from being damaged by water, thereby reducing the cost expenditure caused by maintenance.

[0020] A plurality of make way grooves 24 are provided at the top of the flange 2, and pressure sensors 3 are installed on the inner walls of the plurality of make way grooves 24; the make way grooves 24 make way for the pressure sensor 3, and the output end of the pressure sensor 3 is between the flange 2 and the hull flange. When the flange 2 and the hull flange are fitted and docked, the output end of the pressure sensor 3 can be squeezed and contracted by the hull flange, so that the pressure sensor 3 can detect the gap between the flange 2 and the hull flange according to the pressure, and when the bolts between the flange 2 and the hull flange become loose after long-term use, the pressure sensor 3 can timely sense the looseness between the flange 2 and the hull flange, and send an electrical signal to notify the hull control system, so that the staff can timely inspect and repair and avoid water seepage.

[0021] A rolling sensor 31 is installed on the top of the pressure sensor 3, and the rolling sensor 31 is slidably connected to the bottom of the hull connection; the pressure sensor 3 contacts the flange on the hull through the rolling sensor 31. When a lateral sliding displacement occurs between the flange 2 and the hull, the rolling sensor 31 can roll due to the friction force of the hull flange, thereby enabling the rolling sensor 31 to sense the lateral sliding between the flange 2 and the hull flange, which is convenient for timely inspection and maintenance and ensures safety in later use.

[0022] Two water sensors 25 are installed on the top of the flange 2, and the two water sensors 25 are located between the rubber sealing ring 231 and the annular wrapping bag 232; the water sensor 25 detects water ingress in the gap between the flange 2 and the hull flange, and the water sensor 25 is located between the two sealing barrier rings. When water seeps into the gap between the flange 2 and the hull flange, the water sensor 25 senses it, and then the water sensor 25 can transmit a water ingress signal to the control system, which is convenient for timely maintenance and reduces the occurrence of water seepage without the staff knowing.

[0023] One end of the propeller body 1 is fixedly connected to a limiting ring 4, the limiting ring 4 is sleeved on the side wall of the propeller 11, and the propeller 11 is rotatably connected to the inner wall of the limiting ring 4; the propeller body 1 drives the propeller 11 through an internal motor, so that the propeller 11 can drive the river water to realize the forward movement of the hull, the limiting ring 4 shields the outer periphery of the connection part between the propeller 11 and the propeller body 1, and the direction of the open gap between the limiting ring 4 and the propeller 11 is opposite to the travel direction of the propeller body 1, impurities in the river water can be guided away along the inclined outer wall of the limiting ring 4, reducing impurities stuck in the gap between the propeller 11 and the propeller body 1, thereby improving the stability of the propeller body 1 and the propeller 11 during use.

[0024] The working principle and use process of the utility model are as follows: when the device is connected and installed with the hull, the connecting rod 12 is held, and the connecting rod 12 drives the flange 2 to dock with the flange on the hull for installation. After the flange 2 is docked with the flange on the hull using bolts, the installation and fixation are achieved. The rubber sealing ring 231 and the annular wrapping bag 232 are in a state of enclosing the perforation 21, and the rubber sealing ring 231 and the annular wrapping bag 232 can form two sealing enclosure rings to improve the sealing performance, thereby improving the protection effect on the line and the thruster body 1. When the ship is used in a period of high temperature, the expansion of the rubber sealing ring 231 can increase the airtightness between the flange 2 and the hull flange. When the ship is used in a period of low temperature, the negative thermal expansion filler 233 can expand when the temperature drops. At this time, the negative thermal expansion filler 233 can prop up the annular wrapping bag 232 from the inside, causing the annular wrapping bag 232 to expand, thereby increasing the sealing between the flange 2 and the hull flange, so that the sealing between the flange 2 and the ship flange can always maintain a stable high sealing at different times, thereby improving the safety of use between the thruster body 1 and the hull. When looseness occurs between the flange 2 and the hull flange, the pressure sensor 3, the rolling sensor 31 and the water immersion sensor 25 can sense the position and water seepage between the flange 2 and the hull flange, and then send an electrical signal notification to the hull control system, so that the staff can conduct timely inspections and ensure safety in later use.

Claims

1. A propeller for a ship, comprising a propeller body (1), a propeller (11), a connecting rod (12) and a wave-suppressing plate (13), characterized in that: The top of the connecting rod (12) is fixedly connected to a flange (2), the flange (2) is provided with a through hole (21), a wiring channel (14) is provided inside the connecting rod (12), the through hole (21) corresponds to the wiring channel (14) in position and size, the top of the flange (2) is provided with two annular grooves (23), the inner walls of the two annular grooves (23) are respectively fixedly connected with a rubber sealing ring (231) and an annular wrapping bag (232), the inside of the annular wrapping bag (232) is filled with a negative thermal expansion filler (233), and the annular wrapping bag (232) is located outside the rubber sealing ring (231).

2. A propeller for a ship according to claim 1, characterized in that: The top of the flange (2) is provided with a plurality of relief grooves (24), and the inner walls of the plurality of relief grooves (24) are all provided with pressure sensors (3).

3. A propeller for a ship according to claim 2, characterized in that: A rolling sensor (31) is installed on the top of the pressure sensor (3), and the rolling sensor (31) is slidably connected to the bottom of the hull connection.

4. A propeller for a ship according to claim 1, characterized in that: Two water immersion sensors (25) are installed on the top of the flange (2), and the two water immersion sensors (25) are located between the rubber sealing ring (231) and the annular wrapping bag (232).

5. A propeller for a ship according to claim 1, characterized in that: One end of the propeller body (1) is fixedly connected to a limiting ring (4), the limiting ring (4) is sleeved on the side wall of the propeller (11), and the propeller (11) is rotatably connected to the inner wall of the limiting ring (4).

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