High-thrust water jet propulsion structure of ship

Abstract

The invention relates to the technical field of ship water jet propulsion structures, in particular to a ship high-thrust water jet propulsion structure which comprises an installation assembly used for being installed at the tail of a small ship and comprising an L-shaped installation frame and a slidable sliding clamping plate, and the L-shaped installation frame is provided with a through hole used for limiting sliding of the sliding clamping plate; and the water spraying assembly is installed at the top of the installation assembly and comprises an L-shaped hinge plate which is rotatably arranged, a hinge rotating shaft which is rotatably arranged at the top end of a horizontal supporting arm of the L-shaped installation frame is installed on one side of the bottom end of the L-shaped hinge plate, and an adjusting mechanism is arranged below the L-shaped hinge plate. The water jet propulsion device can be adaptively installed in the actual use process, the purposes of speed adjustment and angle adjustment can be achieved in the water jet propulsion process, ship propulsion is better facilitated, and by means of the arrangement of the jacking cam which is always vertical and the arrangement of the horizontal pushing assembly on the jacking cam, the ship propulsion efficiency is improved. And horizontal thrust can be given to the whole equipment, and the propelling effect is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of ship water jet propulsion structures, and in particular to a ship high-thrust water jet propulsion structure. Background Art

[0002] The ship thrust water jet propulsion structure is an advanced ship propulsion method. The ship thrust water jet propulsion structure is an advanced ship propulsion method.

[0003] In actual use, the ship thrust water jet propulsion structure is mostly used to effectively increase the speed of the ship, making it convenient for small boats and yachts to achieve rapid speed-up and meet normal work needs.

[0004] However, in actual use, due to the weight of the hull, the contact area between the hull and the water surface is large, which will affect the actual propulsion speed. For this reason, we propose a high-thrust water jet propulsion structure for ships. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a high-thrust water jet propulsion structure for ships.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A large-thrust water jet propulsion structure for a ship, comprising:

[0008] The mounting assembly is used for mounting at the stern of a small vessel, and includes an L-shaped mounting frame and a slidable sliding clamping plate. The L-shaped mounting frame is provided with a through hole for limiting the sliding of the sliding clamping plate. Through the cooperation of the L-shaped mounting frame and the sliding clamping plate, the overall structure is stably mounted at the stern of the vessel, providing a basis for the actual propulsion effect;

[0009] The water spray assembly is installed on the top of the installation assembly, including a rotatable L-shaped hinged plate, a hinged shaft rotatably arranged at the top of the horizontal support arm of the L-shaped mounting frame is installed on one side of the bottom end of the L-shaped hinged plate, an adjustment mechanism is provided below the L-shaped hinged plate, and the adjustment mechanism is installed at the top of the installation assembly for adjusting the angle of the L-shaped hinged plate, a propulsion pump is provided at the top of the L-shaped hinged plate, and water pumping pipes are connected to both sides of the propulsion pump for pumping water to provide a power basis for water jet propulsion, and a water spray pipe is connected to the output end of the propulsion pump, and a variable diameter nozzle assembly is provided at the end of the water spray pipe, and the speed of the water flow sprayed from the water spray pipe is adjusted by the variable diameter adjustment of the variable diameter nozzle assembly, so as to control the actual thrust, and the angle between the water sprayed from the water spray pipe and the variable diameter nozzle assembly and the water surface is adjusted by the adjustable angle setting of the L-shaped hinged plate, so as to make the bow tilt up to a certain extent, reduce the contact area between the hull and the water surface, reduce the friction, and further provide convenience for the actual speed improvement;

[0010] The rotating shaft is installed at the end of the horizontal section of the L-shaped mounting frame to facilitate subsequent installation;

[0011] The lifting cam is installed at the bottom of the rotating shaft, and includes a lifting and adjusting rod that can be raised and lowered. The bottom end of the lifting and adjusting rod is connected to a counterweight assembly, which is used to ensure that the lifting cam always remains vertical to the horizontal during the use of the overall equipment. The bottom end of the counterweight assembly is connected to a connecting frame, and the bottom end of the connecting frame is connected to a horizontal pushing assembly. In conjunction with the setting of the aforementioned counterweight assembly, the overall equipment can always provide horizontal thrust during actual use. In conjunction with the function of the water spray assembly, the thrust of the overall equipment when installed on the ship is effectively improved, which effectively increases the speed.

[0012] As a preferred technical solution of the present application, the vertical support arm of the L-shaped mounting frame and the upper portion of the sliding clamping plate are provided with a plurality of sets of locking nut pairs to ensure that the overall equipment can be stably clamped at the stern of the hull during the installation process and can adapt to hull thicknesses of different sizes;

[0013] Two groups of vertical interference screws are arranged on the top of the sliding clamp to ensure that the position of the sliding clamp is further locked during the clamping process, thereby effectively improving the actual clamping and locking effect.

[0014] As a preferred technical solution of the present application, the adjustment mechanism includes a push rod motor installed at the top end of the horizontal support arm of the L-shaped mounting frame, and the output shaft of the push rod motor is connected to a T-shaped sliding rod;

[0015] The adjustment structure also includes two sets of directional frames fixedly installed at the bottom end of the horizontal support arm of the L-shaped hinged plate. The horizontal support arm of the T-shaped slide bar is limited and slidably arranged on the inner side of the directional frame. The T-shaped slide bar is driven to rise and fall by the push rod motor to cooperate with the setting of the directional frame, so that the L-shaped hinged plate drives the overall water spray assembly to adjust the angle under the action of the hinge shaft.

[0016] As a preferred technical solution of the present application, the variable diameter nozzle assembly includes a plurality of sets of hinged rods hingedly arranged at the nozzle of the water spray pipe, elastic waterproof sheets are connected between adjacent hinged rods, and opening and closing assemblies are provided on the sides of the hinged rods to control the opening angle of the hinged rods, so as to adjust the overall caliber of the hinged rods and the elastic waterproof sheets, thereby achieving the purpose of controlling the water outlet speed;

[0017] The opening and closing assembly includes a fixing plate fixedly mounted on the outer side of the water spray pipe wall, a telescopic rod is passed through the fixing plate, one end of the telescopic rod is hingedly provided with a hinged push rod, and one end of the hinged push rod is hingedly provided with the hinged rod, and the angle of the hinged rod can be effectively opened and closed by pulling the telescopic rod;

[0018] The other end of the telescopic rod is provided with an anti-falling plate, and the outer sleeve of the telescopic rod is provided with a reset spring, and the two ends of the reset spring are respectively connected to the fixing plate and the anti-falling plate, and the subsequent reset adjustment is ensured by elastic force.

[0019] As a preferred technical solution of the present application, the variable diameter nozzle assembly further includes a pushing ring sleeved on the outside of the water spray pipe, and the pushing ring is used to synchronously resist the telescopic rod to achieve synchronous adjustment of the articulated rod to achieve the effect of variable diameter of the water outlet;

[0020] The bottom end of the pushing ring is connected to an L-shaped connecting rod, and the top end of the horizontal support arm of the L-shaped hinged plate is connected to a pneumatic push rod. The output shaft of the pneumatic push rod is fixedly connected to the L-shaped connecting rod, thereby effectively realizing the L-shaped connecting rod driving the pushing ring to move horizontally, thereby achieving the purpose of variable diameter adjustment of the water outlet end of the variable diameter nozzle assembly.

[0021] As a preferred technical solution of the present application, the counterweight assembly includes a counterweight base, a mounting tube is fixedly installed on one side of the counterweight base, a motor is installed on the inner side of the mounting tube, and a fixing box is fixedly connected to the side of the counterweight base through a connecting rod. The fixing box has a hollow structure in the middle and an impact rolling wheel is rotatably arranged inside. The impact rolling wheel is driven by the motor to rotate, so that the counterweight assembly as a whole presents a vertical downward impact force during actual use, ensuring that the overall lifting cam is always in a vertical state.

[0022] As a preferred technical solution of the present application, the horizontal pushing assembly includes a connecting pipe installed at the bottom end of the connecting frame, the interior of the connecting pipe is connected to a stable support frame through a support rod, a rotating shaft is passed through the inner side of the stable support frame, one end of the rotating shaft is connected to a pushing fan blade, the outside of the rotating shaft and the outer side of the output shaft of the motor are connected to a synchronous wheel, and the same set of synchronous belts are sleeved on the outer side of the synchronous wheel. When the motor drives the impact rolling wheel to rotate and provides a downward impact force for the counterweight, the pushing fan blade can be stably rotated with the help of the synchronous belt and the synchronous wheel, providing horizontal thrust and further increasing the speed.

[0023] As a preferred technical solution of the present application, the connecting pipe is evenly provided with several groups of water inlet holes near the outer side of the pushing fan blades, which is convenient for water supply when providing horizontal thrust and ensures the power source of the horizontal thrust.

[0024] As a preferred technical solution of the present application, a combing cone is fixedly installed on one side of the connecting pipe principle pushing fan blades, which is used to comb the front environment when the equipment follows the hull, to prevent weeds in the water from entering the connecting pipe and causing entanglement of the pushing fan blades, thereby avoiding adverse effects on the horizontal thrust operation process.

[0025] The beneficial effects of the present invention are:

[0026] 1. By installing the L-shaped mounting frame and the adjustable sliding clamp on the assembly, the device can be effectively installed to suit ships of different thicknesses and sizes during actual use;

[0027] 2. Through the setting of the propulsion pump, water spray pipe and variable diameter nozzle assembly on the water spray assembly, water flow can be extracted and sprayed at high pressure in actual use, hitting the water surface to provide an overall reverse force to achieve the effect of water spray propulsion, and the overall water spray angle can be adjusted, which can also effectively make the bow of small ships tilt up when in use, reduce friction, and further increase the actual speed;

[0028] 3. By setting the counterweight assembly on the lifting cam, it is ensured that the lifting cam as a whole can always obtain downward impact force during actual use, thereby ensuring that the lifting cam as a whole is in a vertical state to avoid being affected by the water spray assembly. In addition, in conjunction with the setting of the horizontal pushing assembly linked with the counterweight assembly, it can also effectively provide horizontal thrust to the hull, further improving the actual use effect of the hull and achieving the purpose of better speed increase.

[0029] In summary, the present application can be adaptively installed during actual use, and can achieve the purpose of speed adjustment and angle adjustment during water jet propulsion, which is more convenient for hull propulsion. It also relies on the setting of a always vertical lifting cam and the setting of a horizontal pushing component on the lifting cam to give the equipment an overall horizontal thrust, further improving the propulsion effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a structural schematic diagram of a high-thrust water jet propulsion structure for ships proposed by the present invention;

[0031] Figure 2 This is a structural schematic diagram of an installation assembly and a water jet assembly of a large-thrust water jet propulsion structure for a ship proposed by the present invention;

[0032] Figure 3 A schematic structural diagram of a water jet assembly of a large-thrust water jet propulsion structure for a ship proposed by the present invention;

[0033] Figure 4 This is an enlarged structural schematic diagram of a variable-diameter nozzle assembly of a large-thrust water jet propulsion structure for a ship proposed by the present invention;

[0034] Figure 5 The present invention provides a partial cross-sectional structural schematic diagram of a lifting cam of a large-thrust water jet propulsion structure for a ship.

[0035] In the figure: 1. Mounting assembly; 11. L-shaped mounting frame; 12. Sliding clamp; 13. Locking nut pair; 14. Interference screw; 2. Water spray assembly; 21. L-shaped hinge plate; 22. Articulated shaft; 23. Push rod motor; 24. Water pumping pipe; 25. Propulsion pump; 26. Water spray pipe; 27. Directional frame; 28. T-shaped slide bar; 29. ​​Variable diameter nozzle assembly; 291. Pushing ring; 292. L-shaped connecting rod; 293. Telescopic rod; 294. Return spring; 295. Fixed plate; 296, hinged rod; 297, elastic waterproof sheet; 298, hinged push rod; 210, pneumatic push rod; 3, lifting cam; 31, lifting adjustment rod; 32, counterweight base; 33, mounting tube; 34, motor; 35, fixing box; 36, impact rolling wheel; 37, synchronous belt; 38, connecting pipe fittings; 39, pushing fan blades; 310, rotating shaft; 311, stabilizing support frame; 312, combing cone; 313, connecting frame; 4, rotating shaft. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] Reference Figure 1-Figure 5 , a large-thrust water jet propulsion structure for a ship, comprising:

[0038] The mounting assembly 1 is used for mounting at the stern of a small vessel, and comprises an L-shaped mounting frame 11 and a slidable sliding clamping plate 12. The L-shaped mounting frame 11 is provided with a through hole for limiting the sliding of the sliding clamping plate 12. Through the cooperation between the L-shaped mounting frame 11 and the sliding clamping plate 12, the overall structure is stably mounted at the stern of the vessel, providing a basis for the actual propulsion effect;

[0039] The water spray assembly 2 is installed on the top of the mounting assembly 1, and includes a rotatable L-shaped hinged plate 21. A hinged shaft 22 rotatably arranged at the top of the horizontal arm of the L-shaped mounting frame 11 is installed on one side of the bottom end of the L-shaped hinged plate 21. An adjustment mechanism is provided below the L-shaped hinged plate 21. The adjustment mechanism is installed at the top of the mounting assembly 1 and is used to adjust the angle of the L-shaped hinged plate 21. A propulsion pump 25 is provided at the top of the L-shaped hinged plate 21. Both sides of the propulsion pump 25 are connected to a water pumping pipe 24 for pumping water to provide a power basis for water spray propulsion. The output of the propulsion pump 25 The outlet is connected to a water spray pipe 26, and a variable-diameter nozzle assembly 29 is provided at the end of the water spray pipe 26. By adjusting the variable-diameter nozzle assembly 29, the speed of the water flow sprayed from the water spray pipe 26 can be adjusted, thereby controlling the actual thrust. The angle of the L-shaped hinge plate 21 is adjustable, so that the angle between the water body sprayed from the water spray pipe 26 and the variable-diameter nozzle assembly 29 and the water surface can be adjusted, thereby making the bow tilted to a certain extent, reducing the contact area between the hull and the water surface, reducing friction, and further facilitating the actual speed increase.

[0040] The rotating shaft 4 is mounted at the end of the horizontal section of the L-shaped mounting frame 11 to facilitate subsequent installation;

[0041] The lifting cam 3 is installed at the bottom of the rotating shaft 4, and includes a lifting and adjusting rod 31 that can be raised and lowered. The bottom end of the lifting and adjusting rod 31 is connected to a counterweight assembly, which is used to ensure that the lifting cam 3 always remains vertical to the horizontal during the use of the overall equipment. The bottom end of the counterweight assembly is connected to a connecting frame 313, and the bottom end of the connecting frame 313 is connected to a horizontal pushing assembly. In conjunction with the setting of the aforementioned counterweight assembly, the overall equipment can always provide horizontal thrust during actual use. In conjunction with the function of the water spray assembly 2, the thrust of the overall equipment when installed on the ship is effectively improved, which effectively increases the speed.

[0042] Reference Figure 2 , the vertical arm of the L-shaped mounting frame 11 and the upper part of the sliding clamp plate 12 are provided with a plurality of sets of locking nut pairs 13, so as to ensure that the whole equipment can be stably clamped at the stern of the hull during the installation process and can adapt to the hull thickness of different sizes;

[0043] Two groups of vertical abutment screws 14 are provided at the top of the sliding clamping plate 12 to ensure that the position of the sliding clamping plate 12 is further locked during the clamping process, thereby effectively improving the actual clamping and locking effect.

[0044] Reference Figure 3 , the adjustment mechanism includes a push rod motor 23 mounted on the top of the horizontal support arm of the L-shaped mounting frame 11, and the output shaft of the push rod motor 23 is connected to a T-shaped slide bar 28;

[0045] The adjustment structure also includes two sets of directional frames 27 fixedly installed at the bottom end of the horizontal support arm of the L-shaped hinged plate 21. The horizontal support arm of the T-shaped slide bar 28 is limited and slidably set on the inner side of the directional frame 27. The T-shaped slide bar 28 is driven to rise and fall by the push rod motor 23 to cooperate with the setting of the directional frame 27, so that the L-shaped hinged plate 21 drives the overall water spray assembly 2 to adjust the angle under the action of the hinge shaft 22.

[0046] Reference Figure 4 The variable diameter nozzle assembly 29 includes a plurality of hinged rods 296 hingedly arranged at the nozzle of the water spray pipe 26, and elastic waterproof sheets 297 are connected between adjacent hinged rods 296. The sides of the hinged rods 296 are provided with opening and closing assemblies to control the opening angle of the hinged rods 296, so as to adjust the overall caliber of the hinged rods 296 and the elastic waterproof sheets 297, thereby achieving the purpose of controlling the water outlet speed;

[0047] The opening and closing assembly includes a fixing plate 295 fixedly mounted on the outer side of the water spray pipe 26, a telescopic rod 293 is passed through the fixing plate 295, one end of the telescopic rod 293 is hingedly provided with a hinged push rod 298, and one end of the hinged push rod 298 is hingedly provided with a hinged rod 296, and the angle of the hinged rod 296 can be effectively opened and closed by pulling the telescopic rod 293;

[0048] The other end of the telescopic rod 293 is provided with an anti-falling plate, and the outer side of the telescopic rod 293 is sleeved with a reset spring 294, and the two ends of the reset spring 294 are respectively connected to the fixing plate 295 and the anti-falling plate, and the subsequent reset adjustment is ensured by elastic force.

[0049] The variable diameter nozzle assembly 29 also includes a pushing ring 291 sleeved on the outside of the water spray pipe 26, and the pushing ring 291 is used to synchronously resist the telescopic rod 293 to achieve synchronous adjustment of the hinge rod 296, thereby achieving the effect of changing the diameter of the water outlet;

[0050] The bottom end of the pushing ring 291 is connected to an L-shaped connecting rod 292, and the top end of the horizontal arm of the L-shaped hinged plate 21 is connected to a pneumatic push rod 210. The output shaft of the pneumatic push rod 210 is fixedly connected to the L-shaped connecting rod 292, thereby effectively realizing the L-shaped connecting rod 292 driving the pushing ring 291 to move horizontally, thereby achieving the purpose of variable diameter adjustment of the water outlet end of the variable diameter nozzle assembly 29.

[0051] Reference Figure 5The counterweight assembly includes a counterweight base 32, a mounting tube 33 is fixedly installed on one side of the counterweight base 32, a motor 34 is installed on the inner side of the mounting tube 33, and a fixing box 35 is fixedly connected to the side of the counterweight base 32 through a connecting rod. The fixing box 35 has a hollow structure in the middle and an impact rolling wheel 36 is rotatably arranged inside. The impact rolling wheel 36 is driven by the motor 34 to rotate, so that the counterweight assembly as a whole presents a vertical downward impact force in actual use, ensuring that the overall lifting cam 3 is always in a vertical state.

[0052] The horizontal pushing assembly includes a connecting pipe 38 installed at the bottom end of the connecting frame 313, and the interior of the connecting pipe 38 is connected to a stable support frame 311 through a support rod. A rotating shaft 310 is passed through the inner side of the stable support frame 311, and one end of the rotating shaft 310 is connected to a pushing fan blade 39. The outside of the rotating shaft 310 and the outer side of the output shaft of the motor 34 are both connected to synchronous wheels, and the same set of synchronous belts 37 are sleeved on the outer side of the synchronous wheels. When the motor 34 drives the impact rolling wheel 36 to rotate and provides a downward impact force for the counterweight, the pushing fan blade 39 can be stably rotated with the help of the synchronous belt 37 and the synchronous wheel to provide horizontal thrust and further increase the speed.

[0053] The connecting pipe 38 is evenly provided with a plurality of groups of water inlet holes near the outer side of the pushing blade 39, so as to facilitate the water supply when providing horizontal thrust and ensure the power source of the horizontal thrust.

[0054] A combing cone 312 is fixedly installed on one side of the connecting pipe 38 and the pushing blade 39, which is used to comb the front environment when the equipment follows the hull to prevent weeds in the water from entering the connecting pipe 38 and causing the pushing blade 39 to be entangled, thereby avoiding adverse effects on the horizontal thrust operation process.

[0055] Workflow: In actual use, firstly, the vertical arm of the L-shaped mounting frame 11 and the sliding clamp plate 12 on the mounting assembly 1 are clamped on the stern of a small vessel by means of a locking nut pair 13, so as to achieve stable installation of the entire device on the hull;

[0056] Then, the propulsion pump 25 is started to extract water in cooperation with the water pumping pipe 24, and the water is discharged through the water spraying pipe 26 and the variable diameter nozzle assembly 29. The sprayed water hits the water surface to provide a reaction force to achieve the propulsion effect of the hull. In this process, the pneumatic push rod 210 can be started to realize the pushing ring 291, so that the pushing ring 291 moves horizontally, thereby driving the telescopic rod 293 to extend, and further realizing the deflection and downward pressure of the articulated push rod 298, so that the opening angle of the articulated rod 296 is adjusted, thereby driving the elastic waterproof sheet 297 to contract, so that the whole composed of the articulated rod 296 and the elastic waterproof sheet 297 is adjusted in diameter, and the water intake is fixed. At this time, after the diameter changes, the water spraying speed is changed, and then the reaction force on the hull is adjusted, achieving the purpose of power adjustment during the water jet propulsion operation;

[0057] In the above adjustment process, the push rod motor 23 can also be started to realize the contraction of the T-shaped slide bar 28, so that the T-shaped slide bar 28 drives the overall angle adjustment of the L-shaped hinge plate 21 under the action of the directional frame 27, so that the water spraying angle of the above-mentioned water spraying operation is adjusted, and the direction of the reaction force is adjusted, so as to effectively achieve the effect of the bow tilting when the hull is traveling in the water. The bow tilting adjusts the contact area between the whole hull and the water surface, and adjusts the friction between the hull and the water surface, so as to play a feedback effect on the actual water spraying propulsion effect, and achieve a certain speed adjustment purpose;

[0058] When in use, the lifting and adjusting rod 31 can be started to make the horizontal pushing assembly below protrude into the water surface. During the movement of the hull, the motor 34 is first started to make the impact rolling wheel 36 rotate accordingly. Due to the characteristics of the impact rolling wheel 36, the impact rolling wheel 36 always gives the overall counterweight assembly a vertical downward impact force during the rotation process, so that the overall lifting cam 3 always maintains a vertical state. At the same time, through the setting of the synchronous wheel and the synchronous belt 37, the rotation of the pushing blades 39 is realized, thereby driving the horizontal water flow to push, and further achieving the purpose of increasing the speed of the ship.

[0059] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0060] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-thrust water jet propulsion structure for a ship, characterized in that: include: The mounting assembly (1) is used for mounting on the stern of a small vessel, and comprises an L-shaped mounting frame (11) and a slidable sliding clamp (12); the L-shaped mounting frame (11) is provided with a through hole for limiting the sliding of the sliding clamp (12); The water spray assembly (2) is mounted on the top of the mounting assembly (1), and comprises an L-shaped hinged plate (21) that can be rotatably arranged. A hinged shaft (22) that is rotatably arranged on the top of the horizontal arm of the L-shaped mounting frame (11) is mounted on one side of the bottom end of the L-shaped hinged plate (21). An adjustment mechanism is arranged below the L-shaped hinged plate (21), and the adjustment mechanism is mounted on the top of the mounting assembly (1). A propulsion pump (25) is arranged on the top of the L-shaped hinged plate (21). Both sides of the propulsion pump (25) are connected to a water pumping pipe (24). The output end of the propulsion pump (25) is connected to a water spraying pipe (24). 6) A variable-diameter nozzle assembly (29) is provided at the end of the water spray pipe (26). By adjusting the variable-diameter nozzle assembly (29), the speed of the water sprayed from the water spray pipe (26) is adjusted, thereby controlling the actual push-off size. The angle of the L-shaped hinge plate (21) is adjustable, thereby adjusting the angle between the water sprayed from the water spray pipe (26) and the variable-diameter nozzle assembly (29) and the water surface, thereby causing the bow to tilt to a certain extent, reducing the contact area between the hull and the water surface, reducing friction, and further facilitating the actual speed increase. The rotating shaft (4) is mounted on the end of the horizontal section of the L-shaped mounting frame (11) to facilitate subsequent installation; The lifting cam (3) is installed at the bottom of the rotating shaft (4), and includes a lifting adjustment rod (31) that can be raised and lowered. The bottom end of the lifting adjustment rod (31) is connected to a counterweight assembly, which is used to ensure that the lifting cam (3) always remains in a vertical state with respect to the horizontal during the use of the overall equipment. The bottom end of the counterweight assembly is connected to a connecting frame (313), and the bottom end of the connecting frame (313) is connected to a horizontal pushing assembly. In combination with the arrangement of the aforementioned counterweight assembly, the overall equipment can always provide a horizontal thrust during actual use.

2. A high-thrust water jet propulsion structure for ships according to claim 1, characterized in that: A plurality of sets of locking nut pairs (13) are provided on the vertical support arms of the L-shaped mounting frame (11) and the sliding clamping plate (12); Two groups of vertical abutment screws (14) are arranged at the top of the sliding clamping plate (12).

3. A high-thrust water jet propulsion structure for ships according to claim 1, characterized in that: The adjustment mechanism comprises a push rod motor (23) mounted on the top end of a horizontal support arm of an L-shaped mounting frame (11), and an output shaft of the push rod motor (23) is connected to a T-shaped sliding rod (28); The adjustment structure also includes two groups of directional frames (27) fixedly mounted on the bottom ends of the horizontal arms of the L-shaped hinged plate (21), and the horizontal arms of the T-shaped slide bars (28) are limitedly slidably arranged on the inner sides of the directional frames (27).

4. A high-thrust water jet propulsion structure for a ship according to claim 1, characterized in that: The variable diameter spray head assembly (29) comprises a plurality of sets of hinged rods (296) hingedly arranged at the nozzle of the spray pipe (26), elastic waterproof sheets (297) are connected between adjacent hinged rods (296), and opening and closing assemblies are arranged on the sides of the hinged rods (296); The opening and closing assembly comprises a fixing plate (295) fixedly mounted on the outer side of the water spray pipe (26) wall, a telescopic rod (293) passing through the fixing plate (295), a hinged push rod (298) being hingedly arranged at one end of the telescopic rod (293), and one end of the hinged push rod (298) being hingedly arranged with a hinged rod (296); The other end of the telescopic rod (293) is provided with an anti-falling plate, and the outer side of the telescopic rod (293) is sleeved with a return spring (294), and the two ends of the return spring (294) are respectively connected to the fixing plate (295) and the anti-falling plate.

5. A high-thrust water jet propulsion structure for a ship according to claim 4, characterized in that: The variable diameter spray head assembly (29) further comprises a pushing ring (291) sleeved on the outside of the spray pipe (26), the pushing ring (291) being used to synchronously resist the telescopic rod (293) to achieve synchronous adjustment of the hinge rod (296) and achieve the effect of changing the diameter of the water outlet; The bottom end of the pushing ring (291) is connected to an L-shaped connecting rod (292), and the top end of the horizontal arm of the L-shaped hinge plate (21) is connected to a pneumatic push rod (210), and the output shaft of the pneumatic push rod (210) is fixedly connected to the L-shaped connecting rod (292).

6. A high-thrust water jet propulsion structure for a ship according to claim 1, characterized in that: The counterweight assembly comprises a counterweight base (32), a mounting tube (33) is fixedly mounted on one side of the counterweight base (32), a motor (34) is mounted on the inner side of the mounting tube (33), and a fixing box (35) is fixedly connected to the side of the counterweight base (32) via a connecting rod. The fixing box (35) is a hollow structure in the middle and an impact-type rolling wheel (36) is rotatably arranged inside.

7. A high-thrust water jet propulsion structure for a ship according to claim 6, characterized in that: The horizontal pushing assembly comprises a connecting pipe (38) installed at the bottom end of the connecting frame (313); the interior of the connecting pipe (38) is connected to a stable support frame (311) via a support rod; a rotating shaft (310) is passed through the inner side of the stable support frame (311); one end of the rotating shaft (310) is connected to a pushing blade (39); the outside of the rotating shaft (310) and the outer side of the output shaft of the motor (34) are both connected to synchronous wheels, and the same set of synchronous belts (37) are sleeved on the outer side of the synchronous wheels.

8. A high-thrust water jet propulsion structure for a ship according to claim 7, characterized in that: The connecting pipe member (38) is evenly provided with a plurality of groups of water inlet holes on the outer side close to the pushing blade (39).

9. A high-thrust water jet propulsion structure for a ship according to claim 7, characterized in that: A combing cone (312) is fixedly mounted on one side of the connecting pipe (38) for pushing the fan blade (39).

Images