Rudder stock sealing device

Abstract

The rudderstock sealing device comprises a sealing base, a sealing end cover, lip-type sealing packing and a packing gland, the sealing base is connected with a steering engine deck on the peripheral side of a rudderstock hole, the peripheral side of the sealing end cover is fixedly connected with the sealing base, the rudderstock penetrates through the sealing end cover, and the packing gland is fixedly connected with the sealing end cover. The lip type sealing packing is arranged between the rudderstock and the inner ring face of the sealing end cover, the inner side face and the outer side face of the lip type sealing packing are tightly attached to the rudderstock shaft sleeve and the inner ring face of the sealing end cover respectively, oil cavities are formed between the lip type sealing packing and the inner side face of the sealing end cover and between the lip type sealing packing and the outer side face of the rudderstock shaft sleeve, and the packing gland is arranged above the lip type sealing packing. According to the rudderstock sealing device provided by the utility model, the oil cavity space is formed by a plurality of lip-type sealing fillers, so that seawater can be effectively prevented from entering the rudderstock sealing device.

Description

Technical Field

[0001] The utility model belongs to the technical field of shipbuilding, and in particular relates to a rudder stock sealing device. Background Art

[0002] According to the regulations, the rudder trunk well that is open to the sea should be equipped with a sealing device above the deepest loading waterline to prevent seawater from entering the steering gear compartment. Utility Model Content

[0003] In view of the above problems, the utility model provides a rudder stock sealing device, which forms an oil cavity space through multiple lip-type sealing fillers, thereby effectively preventing seawater from entering.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A rudder stock sealing device comprises a sealing base, a sealing end cover, a lip-type sealing packing and a packing gland, wherein the sealing base is connected to the steering gear deck on the peripheral side of the rudder stock hole, the outer peripheral side of the sealing end cover is fixedly connected to the sealing base, the rudder stock is penetrated by the sealing end cover, the lip-type sealing packing is arranged between the rudder stock and the inner annular surface of the sealing end cover, the inner and outer side surfaces of the lip-type sealing packing are tightly arranged against the rudder stock sleeve and the inner annular surface of the sealing end cover respectively, an oil cavity is formed between the lip-type sealing packing and the inner side surface of the sealing end cover as well as the outer side surface of the rudder stock sleeve, and the packing gland is placed above the lip-type sealing packing.

[0006] Furthermore, the sealing base is annular and fixedly connected to the steering gear deck.

[0007] Furthermore, the sealing end cover includes a sealing body and a fixed annular plate, the inner annular surface of the fixed annular plate is fixedly connected to the outer side surface of the sealing body, the fixed annular plate is connected to the fixed base, the sealing body is located in the rudder shaft hole, the rudder shaft passes through the sealing body, and the inner diameter of the sealing body is larger than the outer diameter of the rudder shaft sleeve.

[0008] Furthermore, a plurality of screw holes are provided at intervals in the circumferential direction of the fixed annular plate, and a plurality of screw holes are provided on the upper end surface of the sealing base in opposite directions. The fixed annular plate and the sealing base are screwed together by bolts.

[0009] Furthermore, there are multiple lip-type sealing packings, which are divided into two groups and arranged between the sealing body and the rudder shaft sleeve from top to bottom. The lip-type sealing packings are of a meshing lip structure; the meshing of the lip-type sealing packing located at the top is upward, and the meshing of the other lip-type sealing packings is downward.

[0010] Furthermore, the sealing body is provided with a first step, a second step and a third step in sequence from the inside to the outside, the lower end surfaces of the first step, the second step and the third step are located in the same horizontal plane, and the upper ends of the first step, the second step and the third step are increased in height in sequence; a group of lip-type sealing fillers located below is placed on the first step.

[0011] Furthermore, a lubricating oil channel is provided inside the sealing body, and an annular lubricating grease oil separator is spaced apart above the first step platform. The annular lubricating grease oil separator is integrally connected to the vertical side surface of the second step platform, and the inner ring surface of the annular lubricating grease oil separator is spaced apart from the outer side surface of the rudder stock sleeve. The outlet of the lubricating oil channel is located on the inner ring surface of the annular lubricating grease oil separator, and a group of lip-type sealing packings located above are placed on the annular lubricating grease oil separator.

[0012] Furthermore, the packing cover is an annular structure, and its longitudinal section is two mirror-symmetrical 7-shaped structures. The vertical portion of the 7-shaped structure is located on the side of its transverse portion close to the rudder shaft, and the lower end face of the vertical portion abuts against the upper end face of the lip-type sealing packing above the mouth. The transverse portion of the packing cover is located above the second step platform; a plurality of screw holes are provided at intervals in the circumferential direction of the transverse portion of the packing cover, and a plurality of screw holes are provided on the upper end face of the second step platform. The packing cover is connected to the second step platform by bolts.

[0013] Furthermore, a lubrication device is provided in the upper inlet of the lubricating oil channel; a ventilation channel is provided inside the sealing body, the ventilation channel is connected to the steering gear compartment, and a ventilation device is provided inside the end of the ventilation channel close to the outside world.

[0014] Furthermore, an embedding groove is opened on the circumferential side wall of the rudder stock located above the sealing end cover, and a safety device is inserted into the embedding groove; the safety device is an annular structure, and its longitudinal section is two mirror-symmetrical 7-shaped structures, the free end of the horizontal part of the 7-shaped structure is inserted into the embedding groove, and the lower end face of the vertical part of the 7-shaped structure is spaced apart from the upper end face of the third step in the sealing end cover.

[0015] This new rudder stock sealing device uses multiple lip-type packings to create an oil cavity, effectively preventing seawater ingress. The packing gland is secured with a screw and nut, preventing packing movement. The packing position can be determined by observing whether the nut is loose, facilitating routine maintenance and replacement of wear. A safety device prevents the rudder stock from accidentally falling, ensuring safe installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a layout diagram of an oil-lubricated rudder stock sealing device described in the utility model.

[0017] Figure 2 It is a top view of an oil-lubricated rudder stock sealing device described in the utility model.

[0018] Among them, 1-sealing base, 2-sealing end cover, 3-lip sealing packing, 4-packing gland, 5-servo deck, 6-rudder stock, 7-rudder stock sleeve, 8-oil chamber, 9-lubrication device, 10-ventilation device, 11-safety device, 21-sealing body, 22-fixed annular plate, 211-first step, 212-second step, 213-third step, 214-lubricating oil channel, 215-annular lubricating grease oil separator, 216-ventilation channel. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] like Figure 1-Figure 2 As shown, a rudder stock sealing device includes a sealing base 1, a sealing end cover 2, a plurality of lip-type sealing packings 3 and a packing gland 4. The sealing base 1 is connected to the steering gear deck 5 on the peripheral side of the rudder stock hole 51, and the outer peripheral side of the sealing end cover 2 is fixedly connected to the sealing base 1. The rudder stock 6 passes through the sealing end cover 2. The lip-type sealing packing 3 is arranged between the rudder stock 6 and the inner annular surface of the sealing end cover 2. The inner and outer side surfaces of the lip-type sealing packing 3 are tightly arranged against the rudder stock sleeve 7 and the inner annular surface of the sealing end cover 2 respectively. An oil chamber 8 is formed between the lip-type sealing packing 3 and the inner side surface of the sealing end cover 2 and the outer side surface of the rudder stock sleeve 7. The packing gland 4 is placed above the lip-type sealing packing 3.

[0021] It can be understood that the oil cavity 8 is formed by the multiple lip-type sealing fillers 3, which can effectively prevent seawater from entering.

[0022] Furthermore, the sealing base 1 is annular and is fixedly connected to the steering gear deck 5 .

[0023] Furthermore, the sealing end cover 2 includes a sealing body 21 and a fixed annular plate 22, the inner annular surface of the fixed annular plate 22 is fixedly connected to the outer side surface of the sealing body 21, the fixed annular plate 22 is connected to the fixed base, the sealing body 21 is located in the rudder shaft hole 51, the rudder shaft 6 passes through the sealing body 21, and the inner diameter of the sealing body 21 is larger than the outer diameter of the rudder shaft sleeve 7.

[0024] Furthermore, a plurality of screw holes are provided at intervals in the circumferential direction of the fixed annular plate 22 , and a plurality of screw holes are provided on the upper end surface of the sealing base 1 . The fixed annular plate 22 and the sealing base 1 are screwed together by bolts.

[0025] In this embodiment, the number of screw holes is 12. Of course, in other embodiments, the number of screw holes may be 8 or 10, etc.

[0026] Furthermore, there are multiple lip-type sealing packings 3, and the multiple lip-type sealing packings 3 are respectively divided into two groups and arranged between the sealing body 21 and the rudder shaft sleeve 7 from top to bottom. The lip-type sealing packings 3 are a meshing lip-type structure; the meshing of the lip-type sealing packing 3 located at the top is upward, and the meshing of the other lip-type sealing packings 3 is downward.

[0027] Furthermore, the sealing body 21 is provided with a first step 211, a second step 212 and a third step 213 in sequence from the inside to the outside, and the lower end surfaces of the first step 211, the second step 212 and the third step 213 are located in the same horizontal plane, and the upper ends of the first step 211, the second step 212 and the third step 213 are successively higher; a group of the lip-type sealing fillers 3 located below is placed on the first step 211.

[0028] Furthermore, a lubricating oil channel 214 is provided inside the sealing body 21, and an annular lubricating grease oil separator 215 is spaced apart above the first step platform 211. The annular lubricating grease oil separator 215 is integrally connected to the vertical side surface of the second step platform 212, and the inner ring surface of the annular lubricating grease oil separator 215 is spaced apart from the outer side surface of the rudder shaft sleeve 7. The outlet of the lubricating oil channel 214 is located on the inner ring surface of the annular lubricating grease oil separator 215, and a group of lip-type sealing packings 3 located above are placed on the annular lubricating grease oil separator 215.

[0029] Furthermore, the packing gland 4 is an annular structure, and its longitudinal section is two mirror-symmetrical 7-shaped structures. The vertical portion of the 7-shaped structure is located on the side of its transverse portion close to the rudder stock 6. The lower end surface of the vertical portion abuts the upper end surface of the lip-type sealing packing 3 above the mouth. The transverse portion of the packing gland 4 is located above the second stepped platform 212. A plurality of screw holes are provided at intervals along the circumference of the transverse portion of the packing gland 4, and a plurality of screw holes are provided on the upper end surface of the second stepped platform 212. The packing gland 4 is connected to the second stepped platform 212 by bolts. During the operation of the ship, the rotation of the rudder stock 6 may cause the four sealing packings to loosen. This bolt-screw fixing method can determine the fixing condition of the sealing packing by observing whether the nut is loose, which facilitates maintenance by the crew.

[0030] In this embodiment, there are four lip-type sealing packings 3, two of which are stacked on the first step platform 211, and the other two are arranged on the annular grease oil separator 215. The lip-type sealing packings 3 located on the upper and lower sides of the annular grease oil separator 215 and the side walls of the annular grease oil separator 215 and the outer side wall of the rudder shaft sleeve 7 enclose the oil chamber 8 space.

[0031] In this embodiment, the number of screw holes is 12. Of course, in other embodiments, the number of screw holes may be 8 or 10, etc.

[0032] Furthermore, a lubrication device 9 is provided in the upper inlet of the lubricating oil channel 214; a breathable channel 216 is provided inside the sealing body 21, the breathable channel 216 is connected to the steering gear compartment, and a breathable device 10 is provided inside the end of the breathable channel 216 close to the outside world.

[0033] Furthermore, an embedding groove 61 is opened on the circumferential side wall of the rudder bar 6 located above the sealing end cover 2, and a safety device 11 is inserted into the embedding groove 61; the safety device 11 is an annular structure, and its longitudinal section is two mirror-symmetrical 7-shaped structures, the free end of the horizontal part of the 7-shaped structure is inserted into the embedding groove 61, and the lower end surface of the vertical part of the 7-shaped structure is spaced apart from the upper end surface of the third step 213 in the sealing end cover 2.

[0034] The safety device 11 is L-shaped. One side fits into the groove of the tiller 6 and locks it there, while the other side maintains a slight gap with the upper surface of the sealing end cap 2. During installation of the tiller 6, if the tiller 6 falls due to improper handling, the lower end of the safety block will contact the upper end of the sealing end cap 2, providing protection. The safety device 11 is removable and can be removed after the tiller 6 is installed.

[0035] Those skilled in the art should understand that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rudder stock sealing device, characterized in that: It includes a sealing base, a sealing end cover, a lip-type sealing packing and a packing gland. The sealing base is connected to the steering gear deck on the peripheral side of the rudder stock hole, the outer peripheral side of the sealing end cover is fixedly connected to the sealing base, the rudder stock is passed through the sealing end cover, the lip-type sealing packing is arranged between the rudder stock and the inner annular surface of the sealing end cover, the inner and outer side surfaces of the lip-type sealing packing are tightly arranged against the rudder stock sleeve and the inner annular surface of the sealing end cover respectively, an oil cavity is formed between the lip-type sealing packing and the inner side surface of the sealing end cover as well as the outer side surface of the rudder stock sleeve, and the packing gland is placed above the lip-type sealing packing.

2. A rudder stock sealing device according to claim 1, characterized in that: The sealing base is annular and is fixedly connected to the steering gear deck.

3. The rudder stock sealing device according to claim 1, characterized in that: The sealing end cover includes a sealing body and a fixed annular plate, the inner annular surface of the fixed annular plate is fixedly connected to the outer side surface of the sealing body, the fixed annular plate is connected to the fixed base, the sealing body is located in the rudder stock hole, the rudder stock passes through the sealing body, and the inner diameter of the sealing body is larger than the outer diameter of the rudder stock sleeve.

4. A rudder stock sealing device according to claim 3, characterized in that: A plurality of screw holes are arranged at intervals in the circumferential direction of the fixed annular plate, and a plurality of screw holes are arranged oppositely on the upper end surface of the sealing base. The fixed annular plate and the sealing base are screwed together by bolts.

5. The rudder stock sealing device according to claim 3, characterized in that: There are multiple lip-type sealing packings, which are divided into two groups and arranged between the sealing body and the rudder shaft sleeve from top to bottom. The lip-type sealing packings are a meshing lip structure; the meshing of the lip-type sealing packing located at the top is upward, and the meshing of the other lip-type sealing packings is downward.

6. A rudder stock sealing device according to claim 5, characterized in that: The sealing body is provided with a first step, a second step and a third step in sequence from the inside to the outside. The lower end surfaces of the first step, the second step and the third step are located in the same horizontal plane, and the upper ends of the first step, the second step and the third step are increased in sequence; a group of lip-type sealing fillers located below is placed on the first step.

7. A rudder stock sealing device according to claim 6, characterized in that: A lubricating oil channel is provided inside the sealing body, and an annular lubricating grease oil separator is spaced apart above the first step. The annular lubricating grease oil separator is integrally connected to the vertical side surface of the second step. The inner ring surface of the annular lubricating grease oil separator is spaced apart from the outer side surface of the rudder stock sleeve. The outlet of the lubricating oil channel is located on the inner ring surface of the annular lubricating grease oil separator, and a group of lip-type sealing packings located above are placed on the annular lubricating grease oil separator.

8. The rudder stock sealing device according to claim 7, characterized in that: The packing gland is an annular structure, and its longitudinal section is two mirror-symmetrical 7-shaped structures. The vertical portion of the 7-shaped structure is located on the side of its transverse portion close to the rudder shaft, and the lower end face of the vertical portion abuts against the upper end face of the lip-type sealing packing above the mouth. The transverse portion of the packing gland is located above the second step platform; a plurality of screw holes are provided at intervals in the circumferential direction of the transverse portion of the packing gland, and a plurality of screw holes are provided on the upper end face of the second step platform. The packing gland is connected to the second step platform by bolts.

9. The rudder stock sealing device according to claim 7, characterized in that: A lubricating device is provided in the upper inlet of the lubricating oil channel; a breathable channel is provided inside the sealing body, the breathable channel is communicated with the steering gear cabin, and a breathable device is provided inside the end of the breathable channel close to the outside world.

10. The rudder stock sealing device according to any one of claims 1 to 9, characterized in that: An embedding groove is provided on the circumferential side wall of the rudder stock located above the sealing end cover, and a safety device is inserted into the embedding groove; the safety device is an annular structure, and its longitudinal section is two mirror-symmetrical 7-shaped structures, the free end of the horizontal part of the 7-shaped structure is inserted into the embedding groove, and the lower end face of the vertical part of the 7-shaped structure is spaced apart from the upper end face of the third step in the sealing end cover.

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