阅读说明：本技术 单扇翻转式侧推管盖 (Single-fan turnover type side push pipe cover ) 是由 顾剑刚 黎峰 刘向冬 陆毅 倪银钢 谢立新 沈威 陈鹏 于 2021-10-09 设计创作，主要内容包括：本发明提供一种单扇翻转式侧推管盖,包括一盖板、一传动轴、一导流口和一周边外板；所述导流口形成于所述周边外板中部；所述盖板通过螺栓可拆卸地连接于所述传动轴上并通过所述传动轴枢接于所述导流口内；所述导流口形状与所述盖板配合；所述周边外板固定于一船体；所述盖板的外表面和所述周边外板的外表面与所述船体配合；所述盖板的内表面呈流线型。本发明的一种单扇翻转式侧推管盖,针对中小型、方形系数较小等侧推管口区域空间十分有限的船舶,占用空间小、对侧推推力影响小。(The invention provides a single-fan turnover type side push pipe cover which comprises a cover plate, a transmission shaft, a flow guide port and a peripheral outer plate, wherein the cover plate is arranged on the side of the cover plate; the flow guide port is formed in the middle of the peripheral outer plate; the cover plate is detachably connected to the transmission shaft through a bolt and is pivoted in the flow guide opening through the transmission shaft; the shape of the flow guide opening is matched with that of the cover plate; the peripheral outer plate is fixed on a ship body; the outer surface of the cover plate and the outer surface of the peripheral outer plate are matched with the ship body; the inner surface of the cover plate is in a streamline shape. The single-fan turnover type side thrust pipe cover provided by the invention is small in occupied space and small in influence on side thrust force, and aims at small and medium-sized ships with small square coefficients and the like and ships with limited side thrust pipe opening area space.)

1. A single-fan turnover type side push pipe cover is characterized by comprising a cover plate, a transmission shaft, a flow guide port and a peripheral outer plate; the flow guide port is formed in the middle of the peripheral outer plate; the cover plate is detachably connected to the transmission shaft through a bolt and is pivoted in the flow guide opening through the transmission shaft; the shape of the flow guide opening is matched with that of the cover plate; the peripheral outer plate is fixed on a ship body; the outer surface of the cover plate and the outer surface of the peripheral outer plate are matched with the ship body; the inner surface of the cover plate is in a streamline shape.

2. The single-fan turnover type side push pipe cover according to claim 1, further comprising a transmission arm and a hydraulic oil cylinder, wherein one end of the transmission shaft extends into the hull and is fixedly connected with a first end of the transmission arm; the second end of the transmission arm is pivoted with a telescopic rod of the hydraulic oil cylinder; the hydraulic oil cylinder is fixed in the ship body.

3. The single-fan turnover type side push pipe cover according to claim 2, wherein a sealing bearing is installed at the connection part of the transmission shaft and the ship body.

4. The single-fan turnover type side push pipe cover according to claim 3, further comprising a locking device; the transmission arm is provided with two locking holes matched with the locking device; the locking device is arranged beside the transmission arm.

5. The single-fan turnover type side push pipe cover according to claim 4, wherein the locking device comprises two locking pins and a locking oil cylinder, and the locking pins are in transmission connection with the locking oil cylinder; the locking pin is matched with the locking hole.

6. The single-fan flip type side push pipe cover according to claim 5, wherein the transmission shaft is arranged along a streamline direction of the peripheral outer plate.

Technical Field

The invention relates to the field of ships, in particular to a single-fan turnover type side-push pipe cover.

Background

The side thrust pipe orifice is a source of larger resistance, noise and air bubbles of the ship. The cover plate is arranged at the opening of the side thrust pipe, which is an effective way for solving the resistance increasing effect of the opening of the side thrust pipe. The cover plate is designed according to the line type of the outer plate at the position of the side push pipe opening, is opened when the side push is used, and is locked when the side push is used for normal navigation. When the cover plate is in a locked state, the integrity of the plate line type in the area can be kept to the maximum extent, so that the additional resistance formed at the side thrust pipe opening is avoided. In addition, the side push pipe cover is also beneficial to reducing underwater radiation noise, inhibiting bubble generation and ensuring the normal operation of ship bottom equipment.

However, the area space of the opening of the side push pipe is narrow, and meanwhile, the side push pipe cover and the side push pipe have interaction, so that higher requirements are provided for the design of the side push pipe cover. The prior art has the problems of high space requirement and great influence on the lateral thrust.

The side-push device can obviously improve the maneuverability of the ship when the ship leans to or leaves a wharf or sails at low speed, and is widely applied to various ships at present. However, since the side thruster opening is present on the surface of the hull plate, the ship resistance is adversely affected in a normal sailing state. Research shows that the resistance increment caused by the pipe orifice pushed from the head side can reach 1.4-3.1% of the resistance of the naked ship body. For ships with large linear change of the pipe orifice area pushed from the front side, the resistance increasing effect of the pipe orifice is more obvious. Taking 2400 TEU inside trade container ships as an example, through model test verification, the resistance increment caused by pushing the pipe orifice at the head side is about 3.7 percent, and the ship speed is reduced by about 0.1 kn. This is a non-negligible loss to the ship performance; in the long term, significant fuel costs will be added to the shipowner.

The cover plate is arranged at the opening of the side thrust pipe, which is an effective way for solving the resistance increasing effect of the opening of the side thrust pipe. The cover plate is designed according to the line type of the outer plate at the position of the side push pipe opening, is opened when the side push is used, and is locked when the side push is used for normal navigation. When the cover plate is in a locked state, the integrity of the plate line type in the area can be kept to the maximum extent, so that the additional resistance formed at the side thrust pipe opening is avoided. In addition, the side push pipe cover is also beneficial to reducing underwater radiation noise, inhibiting bubble generation and ensuring the normal operation of ship bottom equipment.

The existing patent products of the side push tube cover mainly comprise a grid plate multileaf type (CN210191789U), a double-leaf turnover type (CN108725725B) and an adduction type (CN 204979141U). The multi-blade side push pipe cover of the grid plate is of a shutter type structure, and the blade surface is of a single-plate structure and is driven by a shaft. The double-fan turnover type double-fan cover plate structure is adopted, and the cover plate is of a double-sided wing type structure and is driven by a horizontal shaft. The inside-retracting type adopts a cover plate structure with arms, and the cover plate structure is stored in a cavity at the top of the side push pipe when being opened.

The side push tube cover in the prior art mainly has the following advantages and disadvantages:

1. the multi-blade type blades of the grid plate are small in stress and small in occupied space, can be applied to small and medium-sized or square-coefficient-small ships, but are difficult to be used for ships with complicated linear curved surfaces of the side-thrust pipe openings, the transmission mechanism is complicated, the number of the blades is large, and the influence on the side-thrust force is large.

2. The double-fan overturning type side push pipe cover transmission mechanism is simple, good line type matching can be guaranteed, hole expansion needs to be carried out on the side push pipe, occupied space is large, the change to a ship body structure is large, the influence on side push force is also large, and the double-fan overturning type side push pipe cover transmission mechanism is only used for large and medium ships with large square coefficients at present.

3. The influence of the adduction type side thrust pipe cover on the side thrust is the smallest of the three, the linear matching performance is good, but the transmission and locking mechanisms are complex, the requirement on the space is the largest of the three, and the adduction type side thrust pipe cover is only applied to large and medium ships with large square coefficients at present.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the single-fan turnover type side thrust pipe cover, which is small in occupied space and small in influence on side thrust for small and medium-sized ships with small square coefficients and other ships with limited side thrust pipe opening area space.

In order to achieve the purpose, the invention provides a single-fan turnover type side push pipe cover which comprises a cover plate, a transmission shaft, a flow guide opening and a peripheral outer plate, wherein the cover plate is arranged on the side push pipe cover; the flow guide port is formed in the middle of the peripheral outer plate; the cover plate is detachably connected to the transmission shaft through a bolt and is pivoted in the flow guide opening through the transmission shaft; the shape of the flow guide opening is matched with that of the cover plate; the peripheral outer plate is fixed on a ship body; the outer surface of the cover plate and the outer surface of the peripheral outer plate are matched with the ship body; the inner surface of the cover plate is in a streamline shape.

Preferably, the ship further comprises a transmission arm and a hydraulic oil cylinder, wherein one end of the transmission shaft extends into the ship body and is fixedly connected with the first end of the transmission arm; the second end of the transmission arm is pivoted with a telescopic rod of the hydraulic oil cylinder; the hydraulic oil cylinder is fixed in the ship body.

Preferably, a sealing bearing is installed at the connection part of the transmission shaft and the ship body.

Preferably, the device also comprises a locking device; the transmission arm is provided with two locking holes matched with the locking device; the locking device is arranged beside the transmission arm.

Preferably, the locking device comprises two locking pins and a locking oil cylinder, and the locking pins are in transmission connection with the locking oil cylinder; the locking pin is matched with the locking hole.

Preferably, the drive shaft is arranged along a streamline direction of the peripheral outer plate.

Due to the adoption of the technical scheme, the invention has the following beneficial effects:

1. the invention simultaneously meets two main technical indexes of small installation space requirement and small influence on the side thrust force, and provides a better solution for installing the side thrust pipe cover on the small and medium-sized ship with small square coefficient.

2. The cover plate, the transmission shaft, the flow guide port and the peripheral outer plate form a modular structure, and a modular installation mode is adopted during installation, so that the installation is convenient, and the time and the labor are saved.

3. The transmission shaft is arranged along the streamline direction of the peripheral outer plate, so that the resistance of the cover plate in an opening state can be reduced.

Drawings

Fig. 1 is a schematic structural view of a single-fan turnover type side push pipe cover according to an embodiment of the present invention;

FIG. 2 is a schematic view of a connection structure between a cover plate and a transmission shaft according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a cover plate, a hydraulic cylinder and a locking device according to an embodiment of the invention.

Detailed Description

The following description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, which are set forth in detail below to provide a better understanding of the function and features of the invention.

Referring to fig. 1 to 3, a single-leaf turnover type side push pipe cover according to an embodiment of the present invention includes a cover plate 1, a transmission shaft 2, a diversion port 3, and a peripheral outer plate 4; the diversion port 3 is formed in the middle of the peripheral outer plate 4; the cover plate 1 is detachably connected to the transmission shaft 2 through bolts and is pivoted in the diversion port 3 through the transmission shaft 2; the shape of the diversion port 3 is matched with that of the cover plate 1; the peripheral outer plate 4 is fixed to a hull; the outer surface of the cover plate 1 and the outer surface of the peripheral outer plate 4 are matched with the ship body; the inner surface of the cover plate 1 is streamline.

The marine engine is characterized by further comprising a transmission arm 5 and a hydraulic oil cylinder 6, wherein one end of the transmission shaft 2 extends into the hull and is fixedly connected with the first end of the transmission arm 5; the second end of the transmission arm 5 is pivoted with a telescopic rod of the hydraulic oil cylinder 6; the hydraulic oil cylinder 6 is fixed in the hull.

A sealing bearing is arranged at the connecting part of the transmission shaft 2 and the ship body.

Also comprises a locking device 7; the transmission arm 5 is provided with two locking holes matched with the locking device 7; the locking device 7 is arranged beside the transmission arm 5.

The locking device 7 comprises two locking pins and a locking oil cylinder, and the locking pins are in transmission connection with the locking oil cylinder; the locking pin is matched with the locking hole.

The propeller shaft 2 is arranged along the streamline direction of the peripheral outer plate 4.

The invention discloses a single-fan turnover type side push pipe cover, which comprises the following steps that 1) a cover plate 1 adopts a single-fan turnover type structure; 2) the cover plate 1 is of a double-sided airfoil structure, the line type of the outer surface of the cover plate is consistent with that of the outer plate of the ship body, and the line type of the inner surface of the cover plate is streamline; 3) when the cover plate 1 is closed, the cover plate is stored at a flow guide opening 3 of the side thrust pipe opening; 4) the cover plate 1 is driven by the transmission shaft 2, the cover plate 1 and the transmission shaft 2 are detachably connected by bolts, and the installation direction of the transmission shaft 2 is consistent with the streamline direction of the peripheral outer plate 4 so as to reduce the resistance of the cover plate 1 in an opening state; 5) the driving and transmission mechanisms inside the ship body are arranged according to the direction of the transmission shaft 2, so that the requirement on a transverse space is greatly reduced; 6) the transmission shaft 2 is connected with a hydraulic oil cylinder 6 through a transmission arm 5 and is driven by the oil cylinder; 7) a sealing bearing is arranged at the position where the transmission shaft 2 penetrates out of the ship body; 8) the transmission arm 5 is provided with a locking hole, and the cover plate 1 is locked by an automatic locking oil cylinder in the opening and closing states; 9) the cover plate 1, the peripheral outer plate 4 and the flow guide port 3 form a device module, modular installation is carried out during actual ship construction, and the driving and locking assembly is debugged and installed on site after the module is installed.

In order to reduce the space occupation, the pipe orifice flow guide opening 3 is designed according to the shape of the cover plate 1, the shape of a side push pipe does not need to be changed, driving and transmission mechanisms inside the ship body are arranged in the direction of the shaft, and the requirement on the transverse space is greatly reduced.

In order to optimize the interaction between the cover plate 1 and the side thrust, the thickness of the cover plate 1 is as thin as possible, the interference of a flow field in the side thrust pipe is reduced, the inflow port and the outflow port are rectified, and the side thrust efficiency is improved.

The invention discloses a single-fan turnover type side push pipe cover, which comprises the following components:

1. the novel structure is adopted, the compact design is carried out, the shape of the side push pipe does not need to be changed, the requirement on installation space is reduced as much as possible, and the novel structure is suitable for the arrangement requirements of small and medium-sized ships with small square coefficients.

2. Through the new construction form, optimize the mutual action of side thrust and side thrust pipe cover, reduce the side thrust lid as far as possible and push the adverse effect of thrust to the side.

While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.