36results about "Stern posts" patented technology

The invention relates to a ship rudder, comprising a propeller driving device, wherein, the propeller is rotatablely arranged around a propeller axle; rubber blades (15); and a streamline body (20) arranged on the rubber blades (15), wherein, the streamline body which takes a pear shape or a boat shape is arranged along the extending line of the propeller axle within the range of the rudder blades; and the streamline body can damage or dismiss automatically when the working force, impact, collision or pressure increases.

The invention discloses a back-hydrofoil high-speed wing rowboat, which comprises a boat body and a motive power device, wherein the bottom of the back end of the boat body is in an integral step lifting in a step shape, the bottom linetype of a front boat body is backwards and gradually transited to the shallow V-shaped transverse cross section from the V-shaped transverse cross section of a boat bow part, and then, the bottom linetype of a back boat body is in a horizontal or shallow reverse V-shaped or shallow reverse circular arc-shaped transverse cross section until the bottom linetype of the bow part of the back boat body is in a horizontal or shallow V-shaped transverse cross section. A back hydrofoil is arranged under the bottom of the back boat body, and two pairs of sheet bodies with tapered wing-shaped transverse cross section in horizontal staggered and transverse symmetry in the longitudinal direction respectively and obliquely extend from two sides of the front boat body. The back-hydrofoil high-speed wing rowboat has the advantages that the splashing kinetic energy of the sliding surface fluid can be better absorbed, and the comprehensive performance of the rowboat is better than that of a planing boat and a gliding-hydrofoil boat. The rapidity of the rowboat is improved by more than 10 percent than that of the planing boat, meanwhile, the transverse and longitudinal stability of the rowboat is greatly improved than that of the planing boat and the ordinary gliding-hydrofoil, and in addition, good character that the planing boat can surf the beach is reserved.

The invention provides a three-body planing boat with a channel wave suppressor, which belongs to the technical field of planing boat equipment. The present invention adjusts the trim of the ship through the wave suppressing plate, so that the three-body planing boat can cross the low-speed resistance peak value more quickly. In the high-speed stage, by adjusting the wave suppressing plate, the pressure in the channel is further increased, thereby increasing the lifting height and reducing the wetted surface area. Obtain a higher speed; solve the problems of slow adjustment in the low-speed sailing stage of the trimaran planing boat and excessive resistance in the high-speed sailing stage.

A device (100), for the checking and measurement of the journal bearing clearance between the outer bearing on the rudder shaft (25) of a rudder for water-borne craft and the inner bearing (32) on the rudder trunk (20) corresponding with the outer bearing (31), is characterized by a measurement rail (70) made of a springy elastic material having internal stiffness, which can be introduced by means of a guide rail (60), provided with a grip-type handle (61), into the gap between the outer bearing and the inner bearing and hence into the clearance measurement region, with a measurement probe (80) located at its free end (70a) for the clearance width measurement, wherein the measurement rail (70) with the measurement probe (80) with a prescribed thickness (a) are exchanged for measurement rails with measurement probes with other thicknesses until the achievement of an agreement of the clearance width with the thickness of a measurement rail (70) with the measurement probe (80).

This invention discloses a ship comprising an upper part, a middle part and a head part of a lower part. In the front section, the width of the upper part is decreased in an upward direction; in the front section, the middle part has constant width or the width is changed within a predetermined range; and in the front section, the width of the lower part is decreased in a downward direction; and the lower part is coupled to the bottom of the ship, and the head part is formed in a rearward direction and is formed in a predetermined range from the ship head to the upward direction.

The invention provides a method for manufacturing a large-scale stern casting structure of a ship, which includes the following steps: cutting the large-scale stern casting structure of a ship along the transverse direction to form upper and lower parts, and performing the upper part and the lower part respectively casting process; a claw-shaped connection frame is set between the upper part and the lower part; the upper part and the lower part are respectively welded to the claw-shaped connection frame to form the ship stern structure. The manufacturing method can realize precise processing of large castings, and has short manufacturing period and low cost.

The invention discloses a ship stern column, the stern column includes an outer plate, a shaft hub and a round steel, one end of the shaft hub protrudes from the outer plate, and is used to connect the propeller of the ship; the round steel is along the Extending along the outline of the outer plate; the outer plate includes a first outer plate and a second outer plate, the end faces of the first outer plate and the end faces of the second outer plate are respectively connected to the round steel The outer wall is connected, and the diameter of the round steel is larger than the wall thickness of the first outer plate or the second outer plate. With the present invention, the connection position of the tail end of the outer plate is moved forward, that is, the connection position of the original middle longitudinal section is moved to a position tangent to the outer edge of the round steel, which increases the operating space inside the hull and effectively improves the construction efficiency. craftsmanship. In addition, round steel replaces a part of the outer plate, correspondingly, the size of the outer plate is reduced, thus reducing the processing difficulty of the outer plate, especially the outer plate with two-way curvature at the tail.

The invention discloses an ice prying type icebreaking tug ship structure, and belongs to the technical field of ship manufacturing. The ice prying type icebreaking tug ship structure includes a shipframe, a half-row ice ship stern, a sharpened forward-leaning type ship bow and a main deck; the half-row ice ship stern includes a stern inclined outer plate and a stern drum, the sharpened forward-leaning type ship bow includes a bow inclined outer plate and a lifting main deck, and the ship frame includes a longitudinal frame, a transverse bulkhead and a water-tight transverse bulkhead; and anincluded angle between the stern inclined outer plate and the horizontal plane is alpha degrees, an included angle between the bow inclined outer plate and the horizontal plane is beta degrees, wherein the alpha degrees are 17 degrees, and the beta degrees are 25 degrees. According to the ice prying type icebreaking tug ship structure, the included angle between the bow inclined outer plate and the horizontal plane is beta degrees, the requirement of an icebreaking grade is met, and broken ice smoothly entering the bottom of a ship and being discharged through the tail part is facilitated; andthe included angle between the stern inclined outer plate and the horizontal plane is alpha degrees, the smooth discharging of the broken ice along the stern inclined outer plate is facilitated, andthe damage to a propeller due to the fact that the broken ice is separated from the ship outer plates is prevented.

A vessel may include a bow comprising an upper section, a middle section and a lower section. In the front cross-section, the width of the upper part decreases in the upward direction, in the front cross-section, the middle part has a constant width or the width changes within a predetermined range, in the front cross-section, the width of the lower part can decrease in the downward direction, and the lower part can be coupled to the bottom of the ship, and the bow may be formed in the rearward direction from the bow of the ship to a predetermined range.

The invention relates to a rudder for marine vessels having a rudder shaft which is arranged on a marine vessel hull such that it can pivot about a rotation axis, having a rudder blade which is connected to the rudder shaft and can pivot about the rotation axis with respect to the marine vessel hull, and having at least one bearing for bearing the rudder blade or rudder shaft on the marine vessel hull, wherein the bearing has an inner bearing section and an outer bearing section, which rests such that it can slide on the inner bearing section. The invention provides for a closure pin (4, 4'), which is arranged on one of the outer bearing section (210) or inner bearing section (220) to rest such that it can slide on the other of the inner bearing section (220) and outer bearing section (210).

A propeller arrangement (100) for a marine vessel, the propeller arrangement (100) comprising a propeller (110), a propeller shaft assembly (120) comprising a shaft portion (122) extending from a distal side of the propeller (111 ), a support member (130) arranged to be connected to a hull (2) of the marine vessel, and a bearing arrangement (140) interconnecting the support member (130) and the shaft portion (122). The propeller arrangement is characterized in that the support member (130) comprises at least one cooling fluid conduit (131 ) for accommodating and circulating a first cooling fluid within the support member (130) and further to the shaft portion (122) and / or to the bearing arrangement (140).