CN216508984U - Marine rudder shaft protection device - Google Patents

Abstract

The utility model discloses a marine rudder shaft protection device which comprises a protection shell, wherein a sealing cavity is formed in the protection shell, a rudder shaft is connected to the top end of the sealing cavity in an inserting mode, a fixing plate is fixedly connected to the bottom of the sealing cavity, a through hole is formed in the middle of the fixing plate, a bearing is fixedly connected to the inner wall of the through hole, electric hydraulic cylinders are fixedly connected to two sides of the bottom end of the fixing plate, output ends of the two electric hydraulic cylinders are fixedly connected with a connecting plate, a flange plate is fixedly connected to the bottom end of the rudder shaft, a rotating shaft is fixedly connected to the bottom of the flange plate, and a rudder blade is fixedly connected to the bottom end of the rotating shaft. The protective shell slows down the oxidation and corrosion of the rudder shaft, the support rod reduces the damage to the rudder shaft, the service life of the rudder shaft is prolonged, the annular blade can efficiently clean objects such as waterweeds and the like wound on the rotating shaft, the rotating characteristics of the rudder shaft and rudder blades are ensured, and the stable sailing of ships is facilitated.

Description

Marine rudder shaft protection device

Technical Field

The utility model relates to the field of ship manufacturing, in particular to a marine rudder shaft protection device.

Background

The rudder shaft is a fixed shaft for replacing a rudder post and sleeving a rudder blade on the fixed shaft to rotate, the rudder blade is connected with a steering engine driving mechanism, and a transmission device for transmitting rudder turning torque is characterized in that the operating principle of the rudder shaft is as follows: when the rudder of the ship body rotates, the rudder shaft rotates after a series of hydraulic transmission or mechanical transmission to drive the rudder blade to deflect, the rudder blade is originally parallel to the water flow direction, an angle is generated between the rudder blade and the water flow direction after deflection, so that the water acting forces received by two sides of the rudder blade are different, and finally the sailing direction of the ship is changed.

The prior rudder shaft is generally made of metal, when in use, the rudder shaft needs to be contacted with seawater for a long time, the marine environment is a complex corrosion environment, the seawater is a strong corrosion medium, simultaneously, the flapping of sea waves generates low-frequency reciprocating stress and impact on metal components, in addition, marine microorganisms, attached organisms and metabolites thereof and the like generate direct or indirect acceleration effect on the corrosion process, the rudder shaft is very easy to be corroded, the service life is shortened, meanwhile, when in sea navigation, the rudder can be wound by aquatic plants, fishing nets and other objects, the transmission performance of the rudder shaft and the rudder blade is influenced, the steering capacity and the stable navigation capacity of the ship are reduced, when the ship enters a submerged reef area or a floating ice area, the rudder blade is easy to touch the submerged reef or the floating ice, and the collision moment can generate great collision force, so that the rudder shaft bears great recoil force, may cause fatal damage to the rudder shaft, and thus, a rudder shaft guard for a ship has been proposed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a marine rudder shaft protection device to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a marine steering wheel shaft protector, includes protecting sheathing, sealed chamber has been seted up to protecting sheathing's inside, the top in sealed chamber alternates and is connected with the steering wheel shaft, the outer wall of protecting sheathing is passed on the top of steering wheel shaft, the both sides of protecting sheathing outer wall bottom all set up threaded hole, two the equal threaded connection in inner wall of screw hole has fixing bolt, the bottom fixedly connected with fixed plate in sealed chamber, the through-hole has been seted up at the middle part of fixed plate, the inner wall fixedly connected with bearing of through-hole, the equal fixedly connected with electric hydraulic cylinder in both sides of fixed plate bottom, two electric hydraulic cylinder's output all with connecting plate fixed connection.

Preferably, the bottom of protecting sheathing inner wall both sides has all been seted up the spout, two the spout respectively with the both ends sliding connection of connecting plate, the equal fixed mounting in both sides of connecting plate bottom has driving motor, every the equal fixedly connected with connecting rod of driving motor's output.

Preferably, a sealing plate is arranged at the bottom end of the inner wall of the protective shell, connecting holes are formed in two sides of the sealing plate, and the fixing bolts are connected with the inner wall threads of the connecting holes.

Preferably, the bottom end of the rudder shaft is fixedly connected with a flange plate, the bottom of the flange plate is fixedly connected with a rotating shaft, the outer wall of the rotating shaft is respectively and alternately connected with a bearing, a connecting plate and a sealing plate, and the bottom end of the rotating shaft is fixedly connected with a rudder blade.

Preferably, the bottom end of each connecting rod penetrates through the sealing plate, the bottom end of each connecting rod is fixedly connected with a supporting rod, the bottom ends of the two supporting rods penetrate through the bottom of the protective shell, and the outer walls of the two supporting rods are fixedly connected with annular blades.

Preferably, the two sides of the top end of the rudder blade are provided with fixed cavities, each bottom end of the inner wall of each fixed cavity is fixedly provided with a buffer spring, and the size of each fixed cavity is matched with that of the corresponding support rod.

Preferably, the two electric hydraulic cylinders and the two driving motors are respectively electrically connected with the storage battery inside the ship through an external electric hydraulic cylinder switch and an external motor switch

The utility model has the technical effects and advantages that:

(1) the driving motor at the top of the telescopic rod is fixedly connected with the annular blade on the outer wall, so that the rudder shaft can cut off wound objects through the blade when encountering the winding of aquatic weeds or other objects, the electric hydraulic cylinder can also enable the telescopic rod to move up and down, the aquatic weeds and other objects wound on the rotating shaft can be cleaned more efficiently, the rotating characteristics of the rudder shaft and the rudder blade are ensured, and the stable sailing of ships is facilitated;

(2) the axis of rotation through protecting sheathing and rudder axle bottom fixed connection is whole with the sea water isolation with the rudder axle, make the rudder axle need not the contact sea water when the drive rudder blade, slow down the oxidation corrosion condition of rudder axle, the electro-hydraulic cylinder and the connecting plate that set up make the ship can promote the connecting plate and insert among the fixed chamber of rudder blade with the telescopic link on the connecting plate when driving into the submerged reef area, rudder axle overall structure's fastness has been promoted, the impact that produces when having shared the collision of rudder blade, the injury that the rudder axle received has been reduced, the life of rudder axle has been prolonged.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a driving structure according to the present invention;

FIG. 3 is a cross-sectional view of the present invention;

fig. 4 is an enlarged schematic view of the utility model at a in fig. 3.

In the figure: 1. a protective housing; 2. a rudder shaft; 3. sealing the cavity; 4. a rudder blade; 5. a fixing plate; 6. a bearing; 7. a rotating shaft; 8. a flange plate; 9. an electric hydraulic cylinder; 10. a connecting plate; 11. a drive motor; 12. sealing plates; 13. a connecting rod; 14. a support bar; 15. an annular blade; 16. fixing the bolt; 17. a fixed cavity; 18. a buffer spring.

Detailed Description

The utility model provides a rudder shaft protecting device for a ship as shown in figures 1-4, which comprises a protective shell 1, wherein the top end of the protective shell 1 is connected with a ship body, a sealing cavity 3 is arranged inside the protective shell 1, a rudder shaft 2 is inserted and connected at the top end of the sealing cavity 3, the top end of the rudder shaft 2 penetrates through the outer wall of the protective shell 1 and is connected with a driving mechanism of the ship body, threaded holes are respectively arranged at two sides of the bottom of the outer wall of the protective shell 1, fixing bolts 16 are respectively connected with the inner walls of the two threaded holes in a threaded manner, a fixing plate 5 is fixedly connected at the bottom of the sealing cavity 3, a through hole is arranged in the middle of the fixing plate 5, a bearing 6 is fixedly connected with the inner wall of the through hole, electric hydraulic cylinders 9 are respectively fixedly connected at two sides of the bottom end of the fixing plate 5, the output ends of the two electric hydraulic cylinders 9 are respectively fixedly connected with a connecting plate 10, sliding grooves are respectively arranged at the bottoms of two sides of the inner wall of the protective shell 1, the two sliding grooves are respectively connected with two ends of the connecting plate 10 in a sliding manner, driving motors 11 are fixedly arranged on two sides of the bottom of the connecting plate 10, the output end of each driving motor 11 is fixedly connected with a connecting rod 13, a sealing plate 12 is arranged at the bottom end of the inner wall of the protective shell 1, connecting holes are formed in two sides of the sealing plate 12, and a fixing bolt 16 is in threaded connection with the inner wall of each connecting hole;

as shown in fig. 3-4, the bottom end of the rudder shaft 2 is fixedly connected with a flange 8, the bottom of the flange 8 is fixedly connected with a rotating shaft 7, the outer wall of the rotating shaft 7 is respectively connected with a bearing 6 and a connecting plate 10, closing plate 12 alternates to be connected, the bottom fixedly connected with rudder blade 4 of axis of rotation 7, closing plate 12 is all passed to the bottom of every connecting rod 13, the equal fixedly connected with bracing piece 14 in bottom of every connecting rod 13, the bottom of protecting sheathing 1 is all passed to the bottom of two bracing pieces 14, the equal fixedly connected with annular blade 15 of outer wall of two bracing pieces 14, fixed chamber 17 has all been seted up to the both sides on rudder blade 4 top, the bottom of every fixed chamber 17 inner wall is all fixed and is equipped with buffer spring 18, fixed chamber 17's size and bracing piece 14 size looks adaptation, two electric hydraulic cylinder 9 and two driving motor 11 are respectively through external electric hydraulic cylinder switch and external motor switch and the inside battery electric connection of boats and ships.

The working principle of the utility model is as follows: the top end of the rudder shaft 2 is connected with a driving system of a ship, the bottom end of the protective shell 1 is connected with a ship body, the rudder shaft 2 is integrally loaded through a sealing cavity 3 arranged in the protective shell 1, so that the rudder shaft 2 does not need to contact with seawater when in use, the corrosion effect of the seawater on the rudder shaft 2 is reduced, the bottom end of the rudder shaft 2 is connected with a rotating shaft 7 through a flange 8, when in steering, the rudder shaft 2 rotates to drive the rotating shaft 7 to rotate in a bearing 6, the direction of the rudder blade 4 is deflected, the purpose of steering is achieved, the annular blade 15 is contacted with the rotating shaft 7, when the rotating shaft 7 is wound by objects such as seaweed and the like, the driving motor 11 is started, the supporting rod 14 rotates at a high speed under the action of the driving motor 11 to cut off the objects such as the seaweed and the like wound on the rotating shaft 7, if the electric hydraulic cylinder 9 is started at the same time, the connecting plate 10 slides up and down in a chute to drive the supporting rod 14 to move up and down, the annular blade 15 can better clean the rotating shaft 7, when a ship sails to a reef area, the electric hydraulic cylinder 9 is started, the supporting rod 14 is butted with the fixing cavity 17 formed in the surface of the rudder blade 4, at the moment, three layers of connecting supports are arranged between the rudder shaft 2 and the rudder blade 4, the damage of impact force generated in collision to the rudder shaft 2 is effectively relieved, the service life of the rudder shaft 2 is prolonged, the impact force is relieved by the buffer spring 18 when the supporting rod 14 is connected with the fixing cavity 17, the supporting rod 14 is effectively protected, the damage condition possibly generated in the use of the rudder shaft is effectively protected, the service life of the rudder shaft is prolonged, the cost is saved, and the stable sailing of the ship is facilitated.

The standard parts used by the utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the description of the attached drawings.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. A rudder shaft protection device for ships comprises a protection shell (1) and is characterized in that, a sealing cavity (3) is arranged inside the protective shell (1), the top end of the sealing cavity (3) is inserted and connected with a rudder shaft (2), the top end of the rudder shaft (2) penetrates through the outer wall of the protective shell (1), both sides of the bottom of the outer wall of the protective shell (1) are provided with threaded holes, the inner walls of the two threaded holes are in threaded connection with fixing bolts (16), the bottom of the sealing cavity (3) is fixedly connected with a fixing plate (5), the middle part of the fixing plate (5) is provided with a through hole, the inner wall fixedly connected with bearing (6) of through-hole, the equal fixedly connected with electric hydraulic cylinder (9) in both sides of fixed plate (5) bottom, two the output of electric hydraulic cylinder (9) all with connecting plate (10) fixed connection.

2. The marine rudder shaft protecting device according to claim 1, wherein sliding grooves are formed in the bottoms of two sides of the inner wall of the protective housing (1), the two sliding grooves are respectively connected with two ends of the connecting plate (10) in a sliding manner, driving motors (11) are fixedly mounted on two sides of the bottom of the connecting plate (10), and a connecting rod (13) is fixedly connected to an output end of each driving motor (11).

3. The marine rudder shaft protecting device according to claim 1, wherein a sealing plate (12) is disposed at a bottom end of an inner wall of the protective housing (1), connecting holes are formed in both sides of the sealing plate (12), and both of the fixing bolts (16) are in threaded connection with the inner wall of the connecting holes.

4. The marine rudder shaft protecting device according to claim 1, wherein a flange plate (8) is fixedly connected to the bottom end of the rudder shaft (2), a rotating shaft (7) is fixedly connected to the bottom end of the flange plate (8), the outer wall of the rotating shaft (7) is respectively and alternately connected with a bearing (6), a connecting plate (10) and a sealing plate (12), and a rudder blade (4) is fixedly connected to the bottom end of the rotating shaft (7).

5. Marine rudder shaft guard according to claim 2, characterised in that the bottom end of each connecting rod (13) passes through a sealing plate (12), the bottom end of each connecting rod (13) is fixedly connected with a support rod (14), the bottom ends of both support rods (14) pass through the bottom of the protective housing (1), and the outer walls of both support rods (14) are fixedly connected with annular blades (15).

6. Marine rudder shaft protecting device according to claim 4, wherein the two sides of the top end of the rudder blade (4) are both provided with a fixing cavity (17), the bottom end of the inner wall of each fixing cavity (17) is fixedly provided with a buffer spring (18), and the size of each fixing cavity (17) is matched with the size of the support rod (14).

7. The marine rudder shaft protecting device according to claim 2, wherein the two electric hydraulic cylinders (9) and the two driving motors (11) are electrically connected with a storage battery inside the ship through an external electric hydraulic cylinder switch and an external motor switch respectively.

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