CN112249289A - Lower jaw structure of water jet propulsion device integrated with water diversion block - Google Patents
Lower jaw structure of water jet propulsion device integrated with water diversion block Download PDFInfo
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- CN112249289A CN112249289A CN202011145084.XA CN202011145084A CN112249289A CN 112249289 A CN112249289 A CN 112249289A CN 202011145084 A CN202011145084 A CN 202011145084A CN 112249289 A CN112249289 A CN 112249289A
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- water
- bottom plate
- plate
- jet propulsion
- water diversion
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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
- B63H11/117—Pivoted vane
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Hydraulic Turbines (AREA)
Abstract
The invention relates to a lower jaw structure of a water jet propulsion device integrated with a water diversion block, and belongs to the technical field of special marine propellers. The lower jaw is provided with a connecting arm, and two ends of the connecting arm are respectively hinged with the upper jaw and the connecting rod which are arranged on the water jet propulsion device; the lower jaw structure comprises a bottom plate and water distribution blocks, connecting arms are arranged on two sides of the bottom plate, and the water distribution blocks are arranged in the middle of the bottom plate along the flow direction of water flow. Compared with the prior art, the structure of the invention is less limited by space in arrangement, the water diversion block is arranged at the outlet of the lower jaw to change the direction of the sprayed water flow by canceling the baffle plates at the two sides, so that the sprayed water flow is deflected forwards towards the two sides, the reduction of the reverse navigation force caused by the impact of the sprayed water flow on the stern board or the re-suction of the sprayed water flow by the flow channel is avoided, and the effective improvement of the reverse navigation force is finally realized on the ship with limited arrangement space.
Description
Technical Field
The invention relates to a lower jaw structure of a water jet propulsion device integrated with a water diversion block, and belongs to the technical field of special marine propellers.
Background
The water jet propulsion is a special ship propulsion mode, and the ship is driven to advance by using the reaction force generated by the water jet. Compared with the conventional propeller propulsion mode, the jet propulsion mode has the advantages of high navigational speed, strong maneuverability and the like, so the jet propulsion mode is widely applied to small and medium-sized ships and amphibious vehicles. The reverse driving is limited by the working principle of the water jet propulsion device, the reverse driving cannot be realized by operations such as reversing a main engine and the like, and the direction of water jet flow needs to be deflected by an additional mechanism to realize steering and reverse driving. A box steering mechanism is one of the common mechanisms. Fig. 1 is a schematic diagram showing the main structure and the operation principle of the box-type steering and backing mechanism. The box type steering and backing mechanism mainly comprises a rudder 1, an upper jaw 2, a lower jaw 3, a connecting rod 4 and a backing hydraulic cylinder 5; the upper jaw 2, the lower jaw 3 and the connecting rod 4 form a four-bar linkage mechanism by taking the rudder 1 as a fixing part. The reverse sailing hydraulic cylinder 5 is hinged to the upper jaw 2, the reverse sailing hydraulic cylinder 5 drives the four-bar mechanism to act when in reverse sailing, the jet water flow enters the mechanism through the rudder 1, the water flow direction is changed through the shapes of the upper jaw 2 and the lower jaw 3 to realize forward and downward deflection of the jet water flow, and the reaction force generated by the forward jet water flow pushes the ship to reverse sailing. The conventional chin is a bucket-shaped structure, as shown in fig. 2. The radian of the bottom plate 6 enables the water jet to deflect forwards and downwards, the baffles 7 on the two sides are used for contracting the water flow to prevent the water flow from diffusing outwards, the reinforcing rib plate 8 plays a role in reinforcing the rigidity of the structure and guiding the water, the two ends of the connecting arm 9 are respectively hinged with the upper jaw 2 and the connecting rod 4 to form a four-bar mechanism, and forward and reverse sailing working conditions are driven and switched by the reverse sailing hydraulic cylinder 5. The astern force of the steering astern mechanism is directly dependent on the forward horizontal component of the jet stream. The undersize horizontal component, the collision with a stern board in the spraying process, the re-suction of the sprayed water flow by an inlet channel and the like can reduce the reverse navigation force. The conventional chin structure makes and need avoid direct impact transom when jet stream is deflected forward downwards, when the chin export was too near apart from the transom, in order to avoid strikeing the transom and make jet stream direction more downward with the further increase of chin export angle to avoid the transom, nevertheless directly lead to jet stream's forward component to reduce like this, effectual power of backing a car reduces. Or the axial dimension of the whole mechanism is lengthened, and the distance between the lower jaw outlet and the transom is increased, but the mechanism is oversized and has higher requirements on installation space.
Disclosure of Invention
The invention aims to solve the technical problem of how to prevent the jet water flow from deflecting downwards and forwards to directly impact a stern board when the ship is reversed under the condition that the installation space is limited.
In order to solve the problems, the technical scheme adopted by the invention is to provide a lower jaw structure of a water jet propulsion device integrating water blocks, wherein a connecting arm is arranged on the lower jaw, and two ends of the connecting arm are respectively hinged with an upper jaw and a connecting rod which are arranged on the water jet propulsion device; the lower jaw structure further comprises a bottom plate and water distribution blocks, connecting arms are arranged on two sides of the bottom plate, and the water distribution blocks are arranged in the middle of the bottom plate along the flow direction of water flow.
Preferably, the bottom plate is provided with a water flow inlet end and a water flow outlet end, and the width of the water flow inlet end is smaller than that of the water flow outlet end.
Preferably, the water diversion block is arranged to be perpendicular to the bottom plate.
Preferably, the water diversion block is a Y-shaped plate structure perpendicular to the bottom plate, and an inverted Y-shaped plate structure for guiding water diversion is arranged from the water flow inlet end to the water flow outlet end of the bottom plate.
Preferably, the water diversion block is provided with a wedge-shaped structure which is vertical to the bottom plate and is used for guiding the water diversion from the water inlet end to the water outlet end of the bottom plate.
Preferably, the Y-shaped plate-shaped structure of the water diversion block comprises a water diversion plate I at the water inlet end of the bottom plate, a water diversion plate II and a water diversion plate III at the water outlet end of the bottom plate, one end of the water diversion plate I is arranged in the middle of the water inlet end of the bottom plate, the other end of the water diversion plate I is simultaneously connected with one ends of the water diversion plate II and the water diversion plate III, and the other ends of the water diversion plate II and the water diversion plate III are arranged at the water outlet end of.
Preferably, the second water distribution plate and the third water distribution plate are perpendicular to the bottom plate, and the second water distribution plate and the third water distribution plate are arc-shaped plates which enable water flow to naturally deflect towards two sides and the front.
Preferably, the water diversion block and the bottom plate are integrated, or the water diversion block is fixedly connected to the bottom plate.
Preferably, one end of the first water distribution plate, which is arranged at the middle part of the water inlet end of the bottom plate, is provided with an airfoil-shaped end structure for improving the water distribution capacity.
Preferably, the water diversion block is made of the same material as the lower jaw bottom plate, or the water diversion block is made of a material which does not generate galvanic corrosion with the material of the lower jaw bottom plate.
Compared with the prior art, the invention has the following beneficial effects:
compared with the prior art, the lower jaw structure in the technical scheme of the invention is less limited by space in arrangement, and the direction of the jet water flow is changed by arranging the water distribution block at the outlet of the lower jaw bottom plate, so that the jet water flow is deflected to two sides and forwards, the problem of reduction of the reverse sailing force caused by impact of the jet water flow on the stern board or re-suction of the jet water flow by the flow channel is avoided, and the effective improvement of the reverse sailing force on a ship with limited arrangement space is finally facilitated.
Drawings
FIG. 1 is a block diagram of a conventional box steering mechanism;
the arrows in the figure show the direction of the water flow during reverse sailing.
Fig. 2 is a view showing a jaw structure of a conventional box-type steering mechanism.
FIG. 3 is a three-dimensional structure diagram of the box-type steering and backing mechanism of the present invention;
the arrows in the figure show the direction of the water flow during reverse sailing.
Fig. 4 is a view showing the structure of the jaw of the box-type steering and backing mechanism of the present invention.
Fig. 5 is a partially enlarged plan view of one end of the water diversion plate at a in fig. 4.
Reference numerals: 1. a rudder; 2. a maxilla; 3. a lower jaw; 4. a connecting rod; 5. a reverse navigation hydraulic cylinder; 6. a base plate; 7. a baffle plate; 8. reinforcing rib plates; 9. a connecting arm; 10. a water diversion block; 11. a first water distribution plate; 12. a water distribution plate II; 13. a water distribution plate III; 14. a floor water flow inlet end; 15. a water flow outlet end of the bottom plate.
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 lower jaw structure of a water jet propulsion device integrated with a water diversion block, wherein a connecting arm 9 is arranged on a lower jaw 3, and two ends of the connecting arm 9 are respectively hinged with an upper jaw 2 and a connecting rod 4 which are arranged on the water jet propulsion device; the jaw structure still includes bottom plate 6 and water diversion piece 11, and bottom plate 6 both sides are equipped with linking arm 9, and bottom plate 6 middle part is equipped with water diversion piece 11 along rivers flow direction. The bottom plate 6 is provided with a water flow inlet end 14 and a water flow outlet end 15, and the width of the water flow outlet end 15 is larger than that of the water flow inlet end 14. The water diversion block 10 is disposed perpendicular to the bottom plate 6. The water diversion block 11 is a Y-shaped plate structure vertical to the bottom plate 6, and an inverted Y-shaped plate structure for guiding water diversion is arranged from the water flow inlet end 14 to the water flow outlet end 15 of the bottom plate. The water diversion block 10 is provided as a wedge-shaped structure perpendicular to the bottom plate for directing a diversion of water flow from the water flow inlet end 14 to the water flow outlet end 15 of the bottom plate. The Y-shaped plate-shaped structure of the water diversion block 10 comprises a water diversion plate I11 at a bottom plate water flow inlet end 14, a water diversion plate II 12 and a water diversion plate III 13 at a water flow outlet end 15, one end of the water diversion plate I11 is arranged in the middle of the bottom plate water flow inlet end 14, the other end of the water diversion plate I11 is simultaneously connected with one ends of the water diversion plate II 12 and the water diversion plate III 13, and the other ends of the water diversion plate II 12 and the water diversion plate III 13 are arranged on the bottom plate water flow outlet end 15. The second water distribution plate 12 and the third water distribution plate 13 are perpendicular to the bottom plate 6, and the second water distribution plate 12 and the third water distribution plate 13 are arc-shaped plates which enable water flow to naturally deflect towards two sides and the front. The water diversion block 10 and the bottom plate 6 are integrated, or the water diversion block 10 is fixedly connected on the bottom plate 6. One end of the first water distribution plate 11, which is arranged in the middle of the water flow inlet end 14 of the bottom plate, is provided with an airfoil-shaped end structure for improving the water flow distribution capacity. The water diversion block 10 is made of the same material as the lower jaw bottom plate 6, or the water diversion block 10 is made of a material which does not generate galvanic corrosion with the material of the lower jaw bottom plate 6.
The invention provides a lower jaw structure of a water jet propulsion device integrated with a water distribution block. The water diversion block 10 is arranged at the outlet of the lower jaw to adjust the direction of the water jet, so that the water jet flows to two sides and deflects forwards, and the water jet is prevented from directly contacting with a stern board or being sucked by an inlet flow channel again.
The water diversion blocks can have different shapes or forms according to different requirements. FIG. 3 is a schematic three-dimensional structure according to a preferred embodiment of the present invention. The baffle plates on two sides are eliminated and the width of the outlet section of the bottom plate 6 is widened, so that water is diffused towards two sides. The shape of the water diversion block 10 should be cambered to make the water jet naturally deflect to both sides and forwards. The water diversion block 10 can be of a Y-shaped plate structure or a wedge-shaped plate. The water diversion block 10 can be made into a whole with the lower jaw, and can also be fixed on the lower jaw by a connecting mode such as bolts. The end part of the water diversion block facing to the water flow can be processed into a wing shape, and the diversion capacity is improved.
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
The invention provides a special inverted bucket chin structure integrating water distribution blocks, which mainly comprises a bottom plate 6, a water distribution block 10 and a connecting arm 9, wherein the water distribution block 10 guides water flow to enable the water flow to diffuse downwards and towards two sides so as to avoid a stern board and a runner acquisition area, as shown in figure 4. Two ends of the connecting arm 9 are respectively hinged with the upper jaw and the connecting rod to form a four-bar mechanism. Compared with the conventional lower jaw, the bottom plate 6 of the technical scheme is widened at the outlet to facilitate drainage; the baffles at two sides are removed, so that the water flow is not converged any more, and the width of the outlet is more conveniently widened; and a first water distribution plate 11, a second water distribution plate 12 and a third water distribution plate 13 are arranged in the middle to enable water to diffuse to two sides, and meanwhile, the structural rigidity can be enhanced.
Too small an angle δ between the second diversion plate 12 and the third diversion plate 13 causes the sprayed water to be sucked by the flow channel again, and too large an angle δ causes the forward component of the sprayed water to be reduced. Specifically, the section width of the flow acquiring area at the inlet of the flow channel is 1.6D (D is the section diameter of the flow channel), and in order to ensure that the jet water flow from the lower jaw cannot be sucked again by the flow channel, the opening angle delta of the water dividing block is slightly larger than 2arctan (0.8D/L), wherein D is the section diameter of the flow channel, and L is the horizontal distance from the starting point of the water dividing block to the water suction port of the inlet flow channel. The water diversion block 10 can be made into a whole with the lower jaw, and can also be fixed on the lower jaw by adopting a bolt connection mode and the like. The water-dividing block 10 should be made of the same material as the lower jaw or other materials that do not cause galvanic corrosion with the lower jaw material. The end part of the water diversion block 10 facing to the water flow can be processed into an airfoil shape, which is more beneficial to diversion. See the enlarged circular view of fig. 5.
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. A lower jaw structure of a water jet propulsion device integrated with a water diversion block is characterized in that a connecting arm is arranged on a lower jaw, and two ends of the connecting arm are respectively hinged with an upper jaw and a connecting rod which are arranged on the water jet propulsion device; the method is characterized in that: the lower jaw structure further comprises a bottom plate and water distribution blocks, connecting arms are arranged on two sides of the bottom plate, and the water distribution blocks are arranged in the middle of the bottom plate along the flow direction of water flow.
2. The chin structure of an integrated water-splitting block water jet propulsion device of claim 1, wherein: the bottom plate is provided with a water flow inlet end and a water flow outlet end, and the width of the water flow outlet end is larger than that of the water flow inlet end.
3. The chin structure of an integrated water-splitting block water jet propulsion device of claim 2, wherein: the water diversion block is arranged to be vertical to the bottom plate.
4. A water jet propulsion unit chin structure of water masses collection as claimed in claim 3, wherein: the water diversion block is of a Y-shaped plate structure vertical to the bottom plate, and an inverted Y-shaped plate structure for guiding water flow to be diverted is arranged from the water flow inlet end to the water flow outlet end of the bottom plate.
5. A water jet propulsion unit chin structure of water masses collection as claimed in claim 3, wherein: the water diversion block is arranged to be vertical to the bottom plate and is of a wedge-shaped structure used for guiding water diversion from the water flow inlet end to the water flow outlet end of the bottom plate.
6. The chin structure of an integrated water diversion block water jet propulsion device of claim 4, wherein: the Y-shaped plate-shaped structure of the water diversion block comprises a water diversion plate I at the water inlet end of the bottom plate, a water diversion plate II and a water diversion plate III at the water outlet end of the bottom plate, one end of the water diversion plate I is arranged in the middle of the water inlet end of the bottom plate, the other end of the water diversion plate I is simultaneously connected with one end of the water diversion plate II and one end of the water diversion plate III, and the other ends of the water diversion plate II and the water diversion plate III are arranged at the.
7. The chin structure of an integrated water diversion block water jet propulsion device of claim 6, wherein: the second water distribution plate and the third water distribution plate are perpendicular to the bottom plate, and the second water distribution plate and the third water distribution plate are arc-shaped plates which enable water flow to deflect towards two sides and the front naturally.
8. The chin structure of an integrated water diversion block water jet propulsion device of claim 7, wherein: the water diversion block and the bottom plate are integrated, or the water diversion block is fixedly connected to the bottom plate.
9. The chin structure of an integrated water-splitting block water jet propulsion device of claim 8, wherein: one end of the first water distribution plate, which is arranged at the middle part of the water inlet end of the bottom plate, is provided with an airfoil-shaped end structure for improving the water distribution capacity.
10. The chin structure of an integrated water-splitting block water jet propulsion device of claim 9, wherein: the water diversion block is made of the same material as the bottom plate of the lower jaw, or is made of a material which does not generate galvanic corrosion with the bottom plate material of the lower jaw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011145084.XA CN112249289A (en) | 2020-10-23 | 2020-10-23 | Lower jaw structure of water jet propulsion device integrated with water diversion block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011145084.XA CN112249289A (en) | 2020-10-23 | 2020-10-23 | Lower jaw structure of water jet propulsion device integrated with water diversion block |
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| Publication Number | Publication Date |
|---|---|
| CN112249289A true CN112249289A (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011145084.XA Pending CN112249289A (en) | 2020-10-23 | 2020-10-23 | Lower jaw structure of water jet propulsion device integrated with water diversion block |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1471484A (en) * | 2000-11-14 | 2004-01-28 | ��˹-����˹�ɷݹ�˾ | Steering arrangement for ships with water jet unit |
| CN201102627Y (en) * | 2007-10-22 | 2008-08-20 | 佛山市顺德区顺达船舶工程有限公司 | Navigation reversing device of the water jet propulsion ship |
| CN108657403A (en) * | 2018-05-09 | 2018-10-16 | 中国船舶工业集团公司第七0八研究所 | A kind of executing agency for split type hydraulic jet propulsion steering navigating reversing device |
| CN209241292U (en) * | 2018-10-08 | 2019-08-13 | 浙江西贝虎特种车辆股份有限公司 | A kind of hydraulic propeller |
-
2020
- 2020-10-23 CN CN202011145084.XA patent/CN112249289A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1471484A (en) * | 2000-11-14 | 2004-01-28 | ��˹-����˹�ɷݹ�˾ | Steering arrangement for ships with water jet unit |
| CN201102627Y (en) * | 2007-10-22 | 2008-08-20 | 佛山市顺德区顺达船舶工程有限公司 | Navigation reversing device of the water jet propulsion ship |
| CN108657403A (en) * | 2018-05-09 | 2018-10-16 | 中国船舶工业集团公司第七0八研究所 | A kind of executing agency for split type hydraulic jet propulsion steering navigating reversing device |
| CN209241292U (en) * | 2018-10-08 | 2019-08-13 | 浙江西贝虎特种车辆股份有限公司 | A kind of hydraulic propeller |
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Application publication date: 20210122 |