CN112124548A - Water jet propulsion boat cut-off plate turnover mechanism - Google Patents
Water jet propulsion boat cut-off plate turnover mechanism Download PDFInfo
- Publication number
- CN112124548A CN112124548A CN202011072855.7A CN202011072855A CN112124548A CN 112124548 A CN112124548 A CN 112124548A CN 202011072855 A CN202011072855 A CN 202011072855A CN 112124548 A CN112124548 A CN 112124548A
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- plate
- intercepting
- mounting bracket
- water jet
- rocker arm
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H11/00—Marine propulsion by water jets
- B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
- B63H11/10—Marine propulsion by water jets the propulsive medium being ambient water having means for deflecting jet or influencing cross-section thereof
- B63H11/107—Direction control of propulsive fluid
Abstract
The invention relates to a turning mechanism for a shutoff plate of a water jet propulsion boat, belonging to the technical field of water jet propulsion boats. The tail sealing plate of the water jet propulsion boat is provided with an intercepting plate turnover mechanism which comprises a telescopic device, a connecting rod, a rocker arm, an intercepting plate and a mounting bracket; the tail sealing plate is provided with a telescopic device and a mounting bracket, the telescopic device is connected with the rocker arm through a connecting rod, and the rocker arm is connected with the mounting bracket through an intercepting plate; the closure plate is flipped about the mounting bracket. According to the invention, the structure of the cutoff plate in the prior art is changed into the turnover mechanism, so that the facing area of the moving part and the static part is reduced, and the fault risk caused by the growth of marine organisms such as oyster on the cutoff plate is greatly reduced; the turnover mechanism reduces the installation space and improves the ship-loading applicability; the bottom plate of the mounting bracket shares part of high pressure, the stress of the shutoff plate is reduced, the driving power requirement of the hydraulic oil cylinder is reduced, a hydraulic power source which is matched independently is not needed, and the manufacturing cost of equipment is reduced.
Description
Technical Field
The invention relates to a turning mechanism for a shutoff plate of a water jet propulsion boat, belonging to the technical field of water jet propulsion boats.
Background
The tail part of the water jet propulsion boat is mostly in a flat stern shape in order to reduce the water immersion area when the boat body slides and facilitate the installation of the water jet propulsion device. For many years, various accessory facilities suitable for being installed at the bottom of a stern have been invented; such as: stern wing (length about 2% -4% of ship length, U.S. patent No. 3628484), stern wedge (U.S. patent No. 4896622), combination of stern wing and stern wedge (U.S. patent No. 6038995), intercepting plate (protruding stern bottom 0.03% -0.2% of ship length, swedish patent No. 502671) and combination of stern wing and intercepting plate (taiwan patent No. TW 200536751A)); the purpose of these devices is to utilize the fluid-guiding function of the attached body facility to generate local high pressure at the attached body facility and the bottom of the boat when the boat is sailing, and the pitching moment is generated to the buoyancy center of the boat by the local high pressure to reduce the pitching angle of the boat, thereby reducing the wave-making resistance of the boat and reducing the total resistance of the boat. As the stern wedge is used as a fixed accessory facility, the resistance of the boat is favorably reduced when the speed is designed, and the resistance of the boat is increased when the speed is not designed. The stern wing, the combination of the stern wing and the stern wedge, and the combination of the cut-off plate and the stern wedge are all used for increasing the resistance of the boat when the boat is reversed by water jet propulsion, and the attached facilities interfere with the reverse water jet of the water jet propulsion, so the application is greatly limited.
The chinese patent publication No. CN108082389A discloses a technique of a cutoff plate, which can change the local pressure of the cutoff plate and the bottom of a boat by adjusting the height of the cutoff plate protruding from the bottom plate of the boat through a sliding mechanism, so as to change the pitch moment and adjust the pitch angle of the boat, thereby meeting the requirements of resistance reduction of boats at different speeds. The related art closure plate device is also applied to a multi-type water jet propelled boat. However, in practical use, it is found that in a marine environment, the slide mechanism is often locked due to adhesion of marine organisms such as oyster to the slide surface of the cut-off plate, and the cut-off plate fails to function. Secondly, the total height of the intercepting plate protruding out of the bottom plate of the boat is 0.03% -0.2% of the ship length, and the total height of the intercepting plate sliding mechanism 1 is at least larger than the height protruding out of the bottom plate of the boat (see the attached drawing 1, D in the drawing 1 represents the installation height of the intercepting plate on the tail sealing plate, and E represents the sliding-out state of the intercepting plate) so as to ensure that the intercepting plate can be completely folded, and the total height of the intercepting plate sliding mechanism 1 is not less than 0.2% of the ship length. In order to reduce the resistance of the high-speed ship, a slender hull is generally adopted for the water jet propulsion boat, so that the installation space of the water jet propulsion pump on the boat tail sealing plate is very small, which is in contradiction with the minimum height limitation of the intercepting plate sliding mechanism 1. In some ship projects, the shutoff plate cannot be placed, the tail sealing plate structure has to be reformed, the shutoff plate and the water jet propulsion pump flange are installed in a staggered mode, the shutoff plate must be detached in advance when the water jet propulsion pump is detached, and therefore the ship is inconvenient and brings hidden troubles to safe use of the shutoff plate.
Disclosure of Invention
The invention aims to solve the defects of the existing intercepting plate and reduce the technical problem of installation space of the intercepting plate.
In order to solve the problems, the technical scheme adopted by the invention is to provide a cutoff plate turnover mechanism of a water jet propulsion boat, wherein the cutoff plate turnover mechanism is arranged on a tail sealing plate of the water jet propulsion boat and comprises a telescopic device, a connecting rod, a rocker arm, a cutoff plate and a mounting bracket; the tail sealing plate is provided with a telescopic device and a mounting bracket, the telescopic device is arranged above the mounting bracket and is connected with the rocker arm through a connecting rod, and the rocker arm is connected with the mounting bracket through a shutoff plate; the mounting bracket is provided with a shutoff plate which is turned over around the mounting bracket.
Preferably, the mounting bracket comprises a vertical plate, a bottom plate and a mounting bracket ear seat; the tail shrouding is gone up the parallel and is equipped with the riser, is equipped with the bottom plate on the riser, and riser and bottom plate junction are equipped with the installing support ear seat.
Preferably, a bottom plate is vertically arranged on the vertical plate.
Preferably, the intercepting plate comprises an intercepting bent plate, a base plate, a side plate and an intercepting plate lug seat; the length direction of the rectangular substrate is provided with a cut-off bent plate; a side plate for reinforcement is arranged between the cut-off bent plate and the base plate in the width direction; the base plate is provided with a cut-off plate lug seat used for being connected with the mounting bracket.
Preferably, the intercepting bent plate is provided with a circular arc-shaped bent surface.
Preferably, the intercepting plate ear seat arranged on the base plate is connected with the mounting bracket ear seat.
Preferably, the intercepting bent plate is disposed below the base plate.
Preferably, the telescopic device comprises an oil cylinder barrel, an oil cylinder seat and a piston rod; the tail sealing plate is provided with an oil cylinder seat and an oil cylinder barrel perpendicular to the tail sealing plate, and a piston rod is arranged in the oil cylinder barrel.
Preferably, one end of the piston rod extending out of the cylinder barrel of the oil cylinder is connected with the rocker arm through a connecting rod.
Preferably, one end of the piston rod extending out of the cylinder barrel of the oil cylinder is movably connected with one end of a connecting rod, and the other end of the connecting rod is movably connected with one end of the rocker arm; the other end of the rocker arm is fixedly connected with the intercepting bent plate.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention changes the sliding mechanism of the cut-off plate sliding along the vertical direction of the boat tail closing plate in the prior art into the turnover mechanism of the cut-off plate turning over around the center of the pin hole on the mounting bracket arranged at the bottom of the boat tail closing plate, reduces the dead area between the moving part and the static part, and greatly reduces the possibility of the cut-off plate being stuck by the grown sea organisms such as oyster and the like.
(2) The invention adopts the shutoff plate turnover mechanism, the whole mechanism only has the vertical plate of the mounting bracket mounted on the boat tail sealing plate, and the maximum height position of the shutoff plate is far away from the boat tail sealing plate, thereby greatly reducing the installation space of the shutoff plate (compared with a shutoff plate sliding mechanism, the installation area is reduced by nearly 50 percent, see the attached drawings 1 and 2), greatly reducing the contradiction between the shutoff plate and the water jet propulsion pump due to the installation space, and improving the shipping applicability of the shutoff plate.
(3) The intercepting plate turnover mechanism is essentially a crank connecting rod mechanism, the mechanism is driven by hydraulic pressure, as the bottom plate of the mounting bracket shares part of high pressure of water flow, the force of the intercepting plate is reduced, the driving power requirement of the hydraulic oil cylinder is reduced, the power source can use other hydraulic power sources on the boat, no independent matched power source is needed, and the cost is reduced. The traditional intercepting plate adopts a special motor to drive a rack to transmit, so that the manufacturing cost is high.
Drawings
Fig. 1 is a schematic structural view of a related art closure plate sliding mechanism.
Wherein D represents the installation height of the intercepting plate on the tail sealing plate, and E represents the sliding-out state of the intercepting plate;
FIG. 2 is a schematic structural view of the intercepting plate turnover mechanism of the present invention.
Wherein A represents the height of the intercepting plate, B represents the state that the intercepting plate is turned down, and C represents the installation height of the intercepting plate on the tail sealing plate;
fig. 3 is a schematic three-dimensional structure diagram of the mounting bracket of the present invention.
Fig. 4 is a schematic three-dimensional structure of the intercepting plate of the present invention.
FIG. 5 is a schematic three-dimensional structure of a hydraulic cylinder according to the present invention.
Reference numerals: 1. an intercepting plate sliding mechanism; 2. a tail sealing plate; 3. a boat bottom panel; 4. mounting a bracket; 5. a shutoff plate; 6. a rocker arm; 7. a connecting rod; 8. a hydraulic cylinder; 9. a vertical plate; 10. a base plate; 11. mounting a bracket ear seat; 12. a cutoff bent plate; 13. a substrate; 14. a side plate; 15. an intercepting plate ear seat; 16. a cylinder barrel; 17. a cylinder block; 18. a piston rod.
Detailed Description
In order to make the invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings:
as shown in fig. 1-5, the invention provides a shutoff plate turnover mechanism for a water jet propulsion boat, wherein the shutoff plate turnover mechanism is arranged on a tail sealing plate 2 of the water jet propulsion boat and comprises a telescopic device, a connecting rod 7, a rocker arm 6, a shutoff plate 5 and a mounting bracket 4; the tail sealing plate 2 is provided with a telescopic device and a mounting bracket 4, the telescopic device is arranged above the mounting bracket 4 and is connected with a rocker arm 6 through a connecting rod 7, and the rocker arm 6 is connected with the mounting bracket 4 through a cut-off plate 5; the mounting bracket 4 is provided with a shut-off plate 5 which is turned over around the mounting bracket 4. The mounting bracket 4 comprises a vertical plate 9, a bottom plate 10 and a mounting bracket ear seat 11; the tail shrouding 2 goes up the parallel riser 9 that is equipped with, is equipped with bottom plate 10 on the riser 9, and the riser 9 is equipped with installing support ear seat 11 with bottom plate 10 junction. A bottom plate 10 is vertically arranged on the vertical plate 9. The cut-off plate 5 comprises a cut-off bent plate 12, a base plate 13, a side plate 14 and a cut-off plate lug 15; the length direction of the rectangular substrate 13 is provided with a cut-off bent plate 12; a side plate 14 for reinforcement is arranged between the cut-off bent plate 12 and the base plate 13 in the width direction; the baseplate 13 is provided with a closure plate ear mount 15 for attachment to a mounting bracket. The intercepting bent plate 12 is formed into a circular arc-shaped bent surface. The closure plate ear mount 15 provided on the base plate 13 is connected to the mounting bracket ear mount 11. The cutoff bent plate 12 is provided below the base plate 13. The telescopic device comprises an oil cylinder 16, an oil cylinder seat 17 and a piston rod 18; the tail sealing plate 2 is provided with an oil cylinder seat 17 and an oil cylinder barrel 16 vertical to the tail sealing plate 2, and the oil cylinder barrel 16 is internally provided with a piston rod 18. One end of the piston rod 18 extending out of the cylinder barrel 16 is connected with the rocker arm 6 through the connecting rod 7. One end of the piston rod 18 extending out of the cylinder barrel 16 is movably connected with one end of the connecting rod 7, and the other end of the connecting rod 7 is movably connected with one end of the rocker arm 6; the other end of the rocker arm 6 is fixedly connected with the intercepting bent plate 12.
As shown in fig. 1 to 5, a turning mechanism of a water jet propelled boat cut-off plate mainly comprises: a mounting bracket 4, a cut-off plate 5, a rocker arm 6, two connecting rods 7, a hydraulic oil cylinder 8 and a plurality of connecting pins and bushings. The mounting bracket 4 comprises a vertical plate 9, a bottom plate 10 and two ear seats 11, a plurality of through holes are arranged on the vertical plate 9 of the mounting bracket, the mounting bracket can be mounted on the tail sealing plate 2 of the boat through bolts, the bottom plate 10 is parallel and level with the bottom plate 3 of the boat, the baffle plate turnover mechanism not only plays a role in diversion during working, reduces water flow splashing loss, but also shares partial high pressure, reduces the stress of the baffle plate 5, and therefore the mounting bracket 4 is not only a structural member but also a functional member. The intercepting plate 5 mainly comprises an intercepting bent plate 12, a base plate 13 and two side plates 14, and is a main functional component of the intercepting plate turnover mechanism, and the intercepting bent plate 12 has a circular arc-shaped cross section and plays a role in guiding flow. The rocker arm 6 is connected with the intercepting plate 5 through a bolt, a pin hole is formed in the rocker arm 6, and the rocker arm 6 plays a role in increasing the stress arm of the intercepting plate 5. The connecting rod 7 is provided with two pin holes, and one pin hole is in pin connection with the pin hole on the rocker arm 6. The hydraulic oil cylinder 8 mainly comprises a cylinder barrel 16, an oil cylinder seat 17 and a piston rod 18, wherein the oil cylinder seat 17 is in flange connection with the boat tail sealing plate 2, one end of the piston rod 18 is provided with a pin hole, and the pin hole is connected with the pin hole of the connecting rod 7 through a pin. The piston rod 18 of the hydraulic oil cylinder does reciprocating motion, the cut-off plate 5 is driven to turn around the center of the pin hole on the mounting bracket 4 through the connecting rod 7 to form a crank connecting rod mechanism, the change of the protruding height of the lower edge of the cut-off plate 5 relative to the bottom plate 3 of the boat is realized, and the purpose of changing the pitching moment at different speeds is fulfilled.
Examples
The shutoff plate turnover mechanism of the water jet propulsion boat related to the embodiment is shown in fig. 2, and comprises a mounting bracket 4, a shutoff plate 5, a rocker arm 6, two connecting rods 7, a hydraulic oil cylinder 8 and a plurality of connecting pins, wherein in fig. 2, a represents the height of the shutoff plate, B represents the turned-down state of the shutoff plate, and C represents the mounting height of the shutoff plate on a tail sealing plate.
The mounting bracket 4 is composed of a vertical plate 9, a bottom plate 10 and two mounting bracket ear seats 11. A plurality of through holes are arranged on the vertical plate 9, and the mounting bracket 4 can be mounted on the boat tail sealing plate 2 through bolts; the bottom plate 10 is flush with the bottom plate 3 of the boat and is generally vertical to the vertical plate 9, and the intercepting plate turnover mechanism not only plays a role in guiding water flow and reducing water flow splashing loss, but also shares part of high pressure and reduces stress of the intercepting plate 5 when in work; the mounting bracket ear seats 11 play a role of reinforcing ribs of the vertical plate 9 and the bottom plate 10, and pin holes are further formed in the mounting bracket ear seats 11. Because the vertical plate 9 of the mounting bracket 4 is used as a structural member, the size of the vertical plate 9 only needs to ensure the structural strength, and the height can be far less than the height of the intercepting plate 5, the space required by the installation of the intercepting plate is greatly reduced, and the ship-loading applicability of the intercepting plate is improved, as shown in figure 3.
The cut-off plate 5 of the embodiment is composed of a cut-off bent plate 12, a base plate 13, two side plates 14 and four cut-off plate lugs 15, and is a main functional component of the cut-off plate turnover mechanism. The cross section of the intercepting bent plate 12 is arc-shaped, so that the diversion effect is achieved; the base plate 13 is used as a foundation for installing the intercepting plate, four intercepting plate lug seats 15 are arranged on the base plate, pin holes are formed in the lug seats 15, and the pin holes are connected with pin holes in the installing support 4 through connecting pins; the side plates 14 are positioned at two ends of the intercepting bent plate 12 and the base plate 13, which not only function as intercepting plate reinforcing ribs, but also can reduce water flow splashing loss when the intercepting plate works and improve the effect of the intercepting plate, as shown in fig. 4.
The rocker arm 6 is connected with the intercepting plate through a bolt, and a pin hole is formed in the rocker arm 6. The rocker arm 6 increases the acting force arm of the mechanism and reduces the driving force of the mechanism.
The implementation connecting rod 7 is provided with two pin holes, wherein one pin hole is in pin connection with the pin hole on the rocker arm 6, and the other pin hole is connected with the hydraulic cylinder piston rod 18.
The hydraulic oil cylinder 8 is mainly composed of a cylinder barrel 16, a cylinder seat 17 and a piston rod 18. The oil cylinder seat 17 is connected with the boat tail sealing plate 2 through a flange; the piston rod 18 has a pin hole at one end, and the pin hole is connected to the pin hole of the connecting rod 7 by a pin. The hydraulic oil cylinder 8 is used as a driving source of the mechanism, a piston rod 18 of the hydraulic oil cylinder reciprocates leftwards, the intercepting plate 5 is driven to overturn around the center of a pin hole on the mounting bracket 4 through the connecting rod 7 to form a crank connecting rod mechanism, the protruding height of the lower edge of the intercepting plate 5 relative to the bottom plate 3 of the boat is changed, and the purpose of changing pitching moment at different sailing speeds is fulfilled, as shown in figure 5.
When the cut-off plate turnover mechanism works, the cut-off plate 5 turns around the center of a pin hole on the mounting bracket 4, compared with the cut-off plate sliding mechanism 1 in the figure 1, the dead area of the moving part and the static part is greatly reduced, and the risk of mechanism jamming caused by oyster growth is greatly reduced.
Because the bottom plate 10 of the mounting bracket 4 shares part of high pressure, the stress of the intercepting plate 5 is reduced, the driving power of the hydraulic oil cylinder 8 is reduced, the hydraulic power source can be driven by other hydraulic power sources on the boat, a separate matched power source is not needed, and the manufacturing cost of equipment is reduced.
The invention provides a water jet propulsion boat intercepting plate turnover mechanism. The existing intercepting plate sliding mechanism 1 is changed into a turnover mechanism consisting of mounting brackets, intercepting plates, rocker arms, connecting rods, hydraulic oil cylinders and other parts. The turnover mechanism reduces the dead-against area of the moving part and the static part, and greatly reduces the fault risk caused by the growth of oyster and other marine organisms on the cut-off plate; the turnover mechanism reduces the installation space and improves the ship-loading applicability; the bottom plate of the mounting bracket shares part of high pressure, the stress of the shutoff plate is reduced, the driving power of the hydraulic oil cylinder is low, a hydraulic power source which is matched independently is not needed, and the equipment cost is reduced.
While the invention has been described with respect to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. Those skilled in the art can make various changes, modifications and equivalent arrangements, which are equivalent to the embodiments of the present invention, without departing from the spirit and scope of the present invention, and which may be made by utilizing the techniques disclosed above; meanwhile, any changes, modifications and variations of the above-described embodiments, which are equivalent to those of the technical spirit of the present invention, are within the scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a water jet propulsion ship cut-off plate tilting mechanism, is equipped with cut-off plate tilting mechanism on the tail shrouding of water jet propulsion ship, its characterized in that: comprises a telescopic device, a connecting rod, a rocker arm, an intercepting plate and a mounting bracket; the tail sealing plate is provided with a telescopic device and a mounting bracket, the telescopic device is arranged above the mounting bracket and is connected with the rocker arm through a connecting rod, and the rocker arm is connected with the mounting bracket through a shutoff plate; the mounting bracket is provided with a shutoff plate which is turned over around the mounting bracket.
2. The turning mechanism of the intercepting plate of the water jet propelled boat of claim 1, wherein: the mounting bracket comprises a vertical plate, a bottom plate and a mounting bracket lug seat; the tail shrouding is gone up the parallel and is equipped with the riser, is equipped with the bottom plate on the riser, and riser and bottom plate junction are equipped with the installing support ear seat.
3. The turning mechanism of the intercepting plate of the water jet propelled boat of claim 2, wherein: and a bottom plate is vertically arranged on the vertical plate.
4. The turning mechanism of the intercepting plate of the water jet propelled boat of claim 2, wherein: the intercepting plate comprises an intercepting bent plate, a base plate, a side plate and an intercepting plate lug seat; the length direction of the rectangular substrate is provided with a cut-off bent plate; a side plate for reinforcement is arranged between the cut-off bent plate and the base plate in the width direction; the base plate is provided with a cut-off plate lug seat used for being connected with the mounting bracket.
5. The turning mechanism of the intercepting plate of the water jet propelled boat of claim 4, wherein: the cutoff bent plate is provided with an arc-shaped bent surface.
6. The turning mechanism of the intercepting plate of the water jet propelled boat of claim 5, wherein: the intercepting plate ear seat arranged on the base plate is connected with the mounting bracket ear seat.
7. The turning mechanism of the intercepting plate of the water jet propelled boat of claim 6, wherein: the cutoff bent plate is arranged below the base plate.
8. The turning mechanism of the intercepting plate of the water jet propelled boat of claim 7, wherein: the telescopic device comprises an oil cylinder barrel, an oil cylinder seat and a piston rod; the tail sealing plate is provided with an oil cylinder seat and an oil cylinder barrel perpendicular to the tail sealing plate, and a piston rod is arranged in the oil cylinder barrel.
9. The turning mechanism of the intercepting plate of the water jet propelled boat of claim 8, wherein: and one end of the piston rod, which extends out of the cylinder barrel of the oil cylinder, is connected with the rocker arm through a connecting rod.
10. The turning mechanism of the intercepting plate of the water jet propelled boat of claim 9, wherein: one end of the piston rod extending out of the cylinder barrel of the oil cylinder is movably connected with one end of a connecting rod, and the other end of the connecting rod is movably connected with one end of the rocker arm; the other end of the rocker arm is fixedly connected with the intercepting bent plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011072855.7A CN112124548A (en) | 2020-10-09 | 2020-10-09 | Water jet propulsion boat cut-off plate turnover mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011072855.7A CN112124548A (en) | 2020-10-09 | 2020-10-09 | Water jet propulsion boat cut-off plate turnover mechanism |
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| CN112124548A true CN112124548A (en) | 2020-12-25 |
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| CN202011072855.7A Pending CN112124548A (en) | 2020-10-09 | 2020-10-09 | Water jet propulsion boat cut-off plate turnover mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114104247A (en) * | 2021-12-03 | 2022-03-01 | 中国船舶工业集团公司第七0八研究所 | Gear-driven water jet propulsion device control mechanism |
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| CN114104247A (en) * | 2021-12-03 | 2022-03-01 | 中国船舶工业集团公司第七0八研究所 | Gear-driven water jet propulsion device control mechanism |
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Application publication date: 20201225 |