Ship propeller based on guide frame structure

Abstract

The utility model belongs to the technical field of marine equipment, and discloses a ship propeller based on a guide frame structure. The ship propeller based on the guide frame structure comprises a driving device, a guide frame assembly, a hydraulic tensioner and a connecting mechanism, the guide frame assembly is connected to the driving device through a screw and a nut, and the driving device drives the guide frame assembly to move along a stern shaft assembly; comprising a stretching part and a seat body, the stretching part is in threaded connection with the end, extending out of the driving device, of the screw, and the seat body can drive the stretching part to move in the direction away from the guide frame assembly; the connecting mechanism is used for being connected with the blades, the guide frame assembly is connected to the connecting mechanism, and the guide frame assembly moves to drive the blades to rotate through the connecting mechanism. According to the ship propeller based on the guide frame structure, the pretightening force of the guide frame assembly and the driving device can be accurately controlled, so that stable and reliable connection is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of marine equipment technology, and in particular to a ship propulsion device based on a guide frame structure. Background Technology

[0002] An adjustable pitch propeller is a ship propulsion device that can change thrust by adjusting the pitch of the propeller blades. It uses a control mechanism located in the propeller hub to allow the propeller blades to rotate perpendicular to the propeller shaft around the blade axis, thereby achieving pitch adjustment to adapt to different navigation conditions.

[0003] In adjustable pitch propellers, the guide frame structure is the most critical load-bearing component. If the guide frame structure malfunctions, the pitch adjustment function of the adjustable propeller will be impossible, severely impacting the ship's navigation. In existing guide frame structures, the piston and guide frame are often separate components. The piston is bolted to one end of the guide frame along its length. Pressure oil in the oil pipe pushes the piston, causing the guide frame to move, and ultimately, through the engagement of the slider and the blade packing, the propeller blades rotate. During the entire pitch adjustment process, the connecting bolts between the piston and guide frame must withstand significant forces, and there are strict requirements for their tightening precision. If the connecting bolts are damaged or break due to unstable stress, it will pose a significant safety hazard to the entire propeller. Utility Model Content

[0004] The purpose of this invention is to provide a ship propulsion device based on a guide frame structure, which can achieve precise control of the preload of the guide frame assembly and the drive device to ensure a stable and reliable connection.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] This utility model provides a ship propulsion device based on a guide frame structure, comprising:

[0007] Drive unit;

[0008] A guide frame assembly, which is connected to the drive device via screws and nuts, and the drive device drives the guide frame assembly to move along the stern shaft assembly;

[0009] A hydraulic tensioner includes a tensioning element and a base, the tensioning element being threadedly connected to the end of the screw extending from the drive device, and the base being capable of driving the tensioning element to move in a direction away from the guide assembly;

[0010] A connecting mechanism for connecting to the blade, a guide assembly connected to the connecting mechanism, and the movement of the guide assembly enabling the blade to rotate via the connecting mechanism.

[0011] Preferably, the seat is sleeved on the end of the screw that extends out of the driving device, the inner wall of the seat has an assembly cavity between it and the screw, the tension member is disposed in the assembly cavity and threaded to the screw, and the seat has an clearance opening for screwing the nut.

[0012] Preferably, the seat is provided with a tension piston, the seat is provided with a hydraulic interface, the seat has a hydraulic chamber inside, the hydraulic chamber is connected to the outside through the hydraulic interface, and the tension piston is movably disposed in the hydraulic chamber.

[0013] Preferably, the guide frame assembly includes a guide frame sleeve and a guide frame block, the stern shaft assembly is movably inserted into the guide frame block, the guide frame sleeve is clamped between the drive device and the guide frame block, the screw fixed to the guide frame block passes through the guide frame sleeve and the drive device, and the nut is screwed to the end of the screw that extends out of the drive device.

[0014] Preferably, the ship propulsion based on the guide frame structure further includes a propeller hub, the guide frame block is disposed inside the propeller hub, the guide frame sleeve is movably inserted through the propeller hub, the propeller blade is connected to the propeller hub through the connecting mechanism, and the stern shaft assembly is inserted into the propeller hub.

[0015] Preferably, the drive device includes a cylinder and a drive piston, the cylinder is connected to the propeller hub, the drive piston is movably disposed in the cylinder, and the drive piston is connected to the guide block through the screw and the nut;

[0016] The drive piston has a first chamber between itself and the cylinder, and a second chamber between itself and the propeller hub. The ship propulsion system based on the guide frame structure further includes a first oil passage and a second oil passage, the first oil passage being connected to the first chamber and the second oil passage being connected to the second chamber.

[0017] Preferably, the connecting mechanism includes a slider, a blade packing, and a blade root screw. The blade packing is rotatably mounted on the propeller hub, the slider is disposed inside the propeller hub, the propeller blade is fixedly connected to the blade packing by the blade root screw, and the blade packing is movably connected to the guide block by the slider. The movement of the guide block can drive the slider to move, thereby driving the blade packing to rotate.

[0018] The beneficial effects of this utility model are as follows:

[0019] This utility model provides a ship propeller based on a guide frame structure, including a drive unit, a guide frame assembly, a hydraulic tensioner, and a connecting mechanism. The connecting mechanism is connected to the propeller blades. The guide frame assembly is connected to the drive unit via a screw and a nut, and is also connected to the connecting mechanism. Therefore, when the drive unit drives the guide frame assembly to move along the stern shaft assembly, the connecting mechanism can drive the propeller blades to rotate, thereby achieving the function of adjusting the pitch. The hydraulic tensioner includes a tensioning member and a base. Since the tensioning member is threadedly connected to the end of the screw extending from the drive unit, and the base can drive the tensioning member to move away from the guide frame assembly, the hydraulic tensioner can achieve the function of adjusting the pitch. Therefore, the tensioning component can stretch the screw, causing it to lengthen. The nut against the drive device will then move away from the drive device under the action of the bolt, thus loosening. At this point, the operator can further tighten the nut, greatly enhancing the connection strength between the guide frame assembly and the drive device. Simultaneously, the base can control the movement distance of the tensioning component, stretching all screws to the same length to precisely control the preload between each nut and the drive device, ensuring that the pressure between all nuts and the drive device is the same, thereby ensuring the stress stability of each connection between the guide frame assembly and the drive device. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of a ship propulsion device based on a guide frame structure provided in a specific embodiment of this utility model.

[0021] In the picture:

[0022] 100 - Stern shaft assembly; 110 - Shaft body; 120 - Stern shaft sleeve;

[0023] 200-blade;

[0024] 1-Drive unit; 11-Cylinder body; 12-Drive piston; 13-First chamber; 14-Second chamber;

[0025] 2-Guide frame assembly; 21-Guide frame sleeve; 22-Guide frame block;

[0026] 3-Hydraulic tensioner;

[0027] 4-Connecting mechanism; 41-Slider; 42-Blade packing; 43-Blade root screw;

[0028] 5-Propeller hub. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0033] like Figure 1 As shown, this utility model provides a ship propeller based on a guide frame structure. The ship propeller based on the guide frame structure includes a drive device 1, a guide frame assembly 2, a hydraulic tensioner 3, and a connecting mechanism 4. The guide frame assembly 2 is connected to the drive device 1 by a screw and a nut. The drive device 1 drives the guide frame assembly 2 to move along the stern shaft assembly 100. It includes a tension member and a seat. The tension member is threadedly connected to the end of the screw that extends out of the drive device 1. The seat can drive the tension member to move in a direction away from the guide frame assembly 2. The connecting mechanism 4 is used to connect with the blade 200. The guide frame assembly 2 is connected to the connecting mechanism 4. The movement of the guide frame assembly 2 can drive the blade 200 to rotate through the connecting mechanism 4.

[0034] In this embodiment, the connecting mechanism 4 is connected to the blade 200, and the guide frame assembly 2 is connected to the drive device 1 via a screw and a nut. The guide frame assembly 2 is also connected to the connecting mechanism 4. Therefore, when the drive device 1 drives the guide frame assembly 2 to move along the stern shaft assembly 100, the connecting mechanism 4 can drive the blade 200 to rotate, thereby achieving the function of adjusting the pitch. The hydraulic tensioner 3 includes a tensioning member and a seat. Since the tensioning member is threadedly connected to the end of the screw extending from the drive device 1, and the seat can drive the tensioning member to move in a direction away from the guide frame assembly 2, the tensioning member can stretch the screw. The elongation of the screw causes the nut against the drive device 1 to move away from the drive device 1 under the action of the bolt, thus loosening. At this point, the operator can further tighten the nut, greatly enhancing the connection strength between the guide frame assembly 2 and the drive device 1. At the same time, the seat can control the movement distance of the tensioning component, stretching all the screws to the same length, so as to precisely control the preload between each nut and the drive device 1 and ensure that the pressure between all the nuts and the drive device 1 is the same, thereby ensuring the stress stability of each connection between the guide frame assembly 2 and the drive device 1.

[0035] Specifically, the end of the guide frame assembly 2 is connected to the drive device 1 via a ring of screws and nuts. One end of the screw is fixed to the guide frame assembly 2, and the other end passes through the drive device 1 and is connected to the nut. The nut abuts against the drive device 1, thereby fixing the drive device 1 to the guide frame assembly 2. The hydraulic tensioner 3 is a commonly used hydraulic bolt device in the art. By using the hydraulic tensioner 3, each screw can be stretched in the elastic deformation zone and the stretched length can be kept equal, so as to ensure that the preload of each nut to the drive device 1 is the same, making the connection between the guide frame assembly 2 and the drive device 1 safer and more reliable, and avoiding the situation where individual bolts fail due to excessive force.

[0036] The hydraulic tensioner 3 is a commonly used hydraulic bolt device in the field, and its specific structure and type can be selected according to actual needs. For example, the hydraulic tensioner 3 has a split structure, with its base and tensioning member being independent components. The base is sleeved on the end of the screw extending from the drive device 1. An assembly cavity is provided between the inner wall of the base and the screw. The tensioning member is disposed in the assembly cavity and threadedly connected to the screw. An clearance opening for tightening the nut is provided on the base. In this embodiment, the method of using the hydraulic tensioner 3 is roughly as follows: The operator first sleeves the base on the end of the screw extending from the nut, then inserts the tensioning member into the assembly cavity and threadedly connects it to the end of the screw until the tensioning member abuts against the base. Then, the operator pushes the tensioning member against the base, causing it to move away from the guide assembly 2. The tensioning member then pulls the screw to extend, causing the nut against the drive device 1 to loosen and disengage. The operator then tightens the loosened nut through the clearance opening, causing the nut to abut against the drive device 1 again.

[0037] In this embodiment, a tension piston is provided on the base, and a hydraulic interface is provided on the base. The base has a hydraulic chamber inside, which is connected to the outside through the hydraulic interface. The tension piston is movably disposed in the hydraulic chamber. Specifically, the hydraulic interface is used to connect an external pressure oil pump. The operator can inject pressurized oil into the hydraulic chamber through the pressure oil pump, thereby driving the tension piston to extend and push the tensioning member to move. It can be understood that the operator can accurately control the tension of the screw by controlling the oil pressure of the pressure oil pump, thereby achieving precise control of the preload of the guide frame assembly 2 and the drive device 1.

[0038] like Figure 1 As shown, the guide frame assembly 2 includes a guide frame sleeve 21 and a guide frame block 22. The stern shaft assembly 100 is movably inserted into the guide frame block 22. The guide frame sleeve 21 is clamped between the drive device 1 and the guide frame block 22. The screw fixed to the guide frame block 22 passes through the guide frame sleeve 21 and the drive device 1. The nut is screwed to the end of the screw that extends out of the drive device 1. Specifically, the stern shaft assembly 100 includes a shaft body 110 and a stern shaft sleeve 120, with the stern shaft sleeve 120 fixed to the end of the shaft body 110. The guide frame assembly 2 is a split structure, wherein the guide frame block 22 is a cuboid structure with a circular hole at one end. The stern shaft sleeve 120 of the stern shaft assembly 100 is inserted into the circular hole of the guide frame block 22, and the guide frame block 22 and the stern shaft sleeve 120 are in sliding fit. The guide frame sleeve 21 is a cylindrical structure, with mounting holes evenly spaced around the axis of the shaft body 110 of the stern shaft assembly 100. A screw passes through the mounting holes and through the drive device 1, thus the guide frame block 22 and the drive device 1 clamp and fix the guide frame sleeve 21. Because the guide frame assembly 2 is a split structure, consisting of an independent guide frame block 22 and a guide frame sleeve 21, the forging cost of the integral guide frame assembly 2 is reduced, and it is easier to process.

[0039] Furthermore, the ship propeller based on the guide frame structure also includes a propeller hub 5, a guide frame block 22 disposed inside the propeller hub 5, a guide frame sleeve 21 movably passing through the propeller hub 5, propeller blades 200 connected to the propeller hub 5 via a connecting mechanism 4, and a stern shaft assembly 100 inserted into the propeller hub 5. Specifically, the propeller hub 5 is a cylindrical structure commonly used in propellers, which is used to install each propeller blade 200 and fit it onto the stern shaft assembly 100; in this embodiment, the guide frame sleeve 21 passes through the end of the propeller hub 5, and the guide frame sleeve 21 can move relative to the propeller hub 5 under the drive of the drive device 1.

[0040] like Figure 1As shown, the drive device 1 includes a cylinder body 11 and a drive piston 12. The cylinder body 11 is connected to the propeller hub 5, and the drive piston 12 is connected to the guide block 22 via a screw and a nut. The drive piston 12 is movably disposed on the cylinder body 11, and a first chamber 13 is formed between the drive piston 12 and the cylinder body 11. A second chamber 14 is formed between the drive piston 12 and the propeller hub 5. The ship propeller based on the guide block structure also includes a first oil passage and a second oil passage. The first oil passage is connected to the first chamber 13, and the second oil passage is connected to the second chamber 14. Specifically, the drive device 1 is a hydraulic cylinder commonly used in the art, including a cylinder body 11 and a drive piston 12. The cylinder body 11 is connected to the end of the propeller hub 5, and a pressure chamber is formed by sealing between the cylinder body 11 and the propeller hub 5. The drive piston 12 is movably disposed on the cylinder body 11, and the drive piston 12 divides the pressure chamber into a first chamber 13 and a second chamber 14. Pressure oil is input through the first oil passage and the second oil passage, respectively, to push the drive piston 12 to move along the length direction of the stern shaft assembly 100.

[0041] Furthermore, such as Figure 1 As shown, the connecting mechanism 4 includes a slider 41, a blade packing 42, and a blade root screw 43. The blade packing 42 is rotatably mounted on the propeller hub 5, and the slider 41 is located inside the propeller hub 5. The propeller blade 200 is fixedly connected to the blade packing 42 by the blade root screw 43. The blade packing 42 is movably connected to the guide block 22 through the slider 41. The movement of the guide block 22 can drive the slider 41 to move, thereby driving the blade packing 42 to rotate. Specifically, the slider 41, the blade packing 42, and the blade root screw 43 are commonly used components in adjustable pitch propellers. Their specific structure and working principle will not be described in detail here. When the guide assembly 2 moves along the length of the stern shaft assembly 100 under the drive of the drive device 1, the guide block 22 will drive the slider 41 to move, and the movement of the slider 41 will drive the propeller blade 200 to rotate through the blade packing 42.

[0042] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A ship propulsion system based on a guide frame structure, characterized in that, include: Drive unit (1); A guide frame assembly (2) is connected to the drive device (1) by a screw and a nut. The drive device (1) drives the guide frame assembly (2) to move along the stern shaft assembly (100). The hydraulic tensioner (3) includes a tensioning member and a base, the tensioning member being threadedly connected to the end of the screw extending from the drive device (1), and the base being capable of driving the tensioning member to move in a direction away from the guide assembly (2); A connecting mechanism (4) is used to connect with the blade (200). The guide frame assembly (2) is connected to the connecting mechanism (4). The movement of the guide frame assembly (2) can drive the blade (200) to rotate through the connecting mechanism (4).

2. The ship propulsion system based on a guide frame structure according to claim 1, characterized in that, The seat is sleeved on the end of the screw that extends out of the drive device (1). The inner wall of the seat has an assembly cavity between it and the screw. The tension member is disposed in the assembly cavity and threadedly connected to the screw. The seat has an clearance opening for screwing the nut.

3. The ship propulsion system based on a guide frame structure according to claim 2, characterized in that, The seat is provided with a tension piston and a hydraulic interface. The seat has a hydraulic chamber inside and is connected to the outside through the hydraulic interface. The tension piston is movably disposed in the hydraulic chamber.

4. The ship propulsion system based on a guide frame structure according to claim 1, characterized in that, The guide frame assembly (2) includes a guide frame sleeve (21) and a guide frame block (22). The stern shaft assembly (100) is movably inserted into the guide frame block (22). The guide frame sleeve (21) is sandwiched between the drive device (1) and the guide frame block (22). The screw fixed to the guide frame block (22) passes through the guide frame sleeve (21) and the drive device (1). The nut is screwed to the end of the screw that extends out of the drive device (1).

5. The ship propulsion system based on a guide frame structure according to claim 4, characterized in that, The ship propeller based on the guide frame structure also includes a propeller hub (5), the guide frame block (22) is disposed inside the propeller hub (5), the guide frame sleeve (21) is movably inserted through the propeller hub (5), the propeller blade (200) is connected to the propeller hub (5) through the connecting mechanism (4), and the stern shaft assembly (100) is inserted into the propeller hub (5).

6. The ship propulsion system based on a guide frame structure according to claim 5, characterized in that, The drive device (1) includes a cylinder (11) and a drive piston (12). The cylinder (11) is connected to the propeller hub (5). The drive piston (12) is movably disposed in the cylinder (11). The drive piston (12) is connected to the guide block (22) through the screw and the nut. The drive piston (12) has a first chamber (13) between itself and the cylinder (11), and the drive piston (12) has a second chamber (14) between itself and the propeller hub (5). The ship propeller based on the guide frame structure also includes a first oil passage and a second oil passage. The first oil passage is connected to the first chamber (13), and the second oil passage is connected to the second chamber (14).

7. The ship propulsion system based on a guide frame structure according to claim 5, characterized in that, The connecting mechanism (4) includes a slider (41), a blade packing (42), and a blade root screw (43). The blade packing (42) is rotatably mounted on the propeller hub (5). The slider (41) is located inside the propeller hub (5). The propeller blade (200) is fixedly connected to the blade packing (42) by the blade root screw (43). The blade packing (42) is movably connected to the guide block (22) by the slider (41). The movement of the guide block (22) can drive the slider (41) to move, thereby driving the blade packing (42) to rotate.

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