Lifting type full-revolving propeller

Abstract

The utility model discloses a lifting type full-revolving propeller which comprises a shell of a cylindrical structure, the lower end of the peripheral face of the shell is fixedly installed at the bottom of a dock, hydraulic cylinders are symmetrically and fixedly arranged on the two sides of the shell, piston rods of the two hydraulic cylinders are vertically and upwards arranged and fixedly connected with an upper support, and a hydraulic revolving mechanism is fixedly installed on the upper support. The output end of the hydraulic swing mechanism coaxially penetrates through the shell and is fixedly connected with a propeller, the propeller is a hydraulic drive propeller, and the outer portion of the propeller is covered with a protection cover. According to the utility model, the propeller is driven by the hydraulic slewing mechanism to do 360-degree rotary motion, so that the propeller can more effectively rotate in a water area such as a harbor area; the upper support is driven by the hydraulic cylinder to ascend and descend relative to the shell, then the hydraulic rotating mechanism and the propeller are driven to ascend and descend synchronously, and therefore the propeller retracts into the shell in a shallow harbor basin, deformation and failure of the propeller after the propeller makes contact with the bottom are avoided, and the device can be better suitable for a dock used in the shallow harbor basin.

Description

Technical Field

[0001] The utility model relates to the technical field of thrusters, in particular to a lifting full-rotation thruster. Background Art

[0002] A ship thruster refers to an energy converter in a ship propulsion device, which converts the power generated by an engine into the thrust for the ship to move forward, so as to overcome the resistance of the ship sailing in water and push the ship forward, such as a propeller, a paddle wheel, a water jet thruster, a jet thruster, a shaft tube thruster and a cycloidal thruster. Among them, the most common one is the propeller. For some ship types with a large length-width ratio, it is difficult to turn in narrow waterways. Therefore, most of the existing propellers can achieve a 360° rotation underwater.

[0003] A shipyard refers to a dock-type building for ship repair and construction. After filling with water, ships can enter and leave. After draining water, ships can be repaired on a dry bottom. For some floating docks used for berthing transfer in a port basin, due to the relatively shallow depth in some areas of the port basin, the dock is prone to bottoming. The traditional propeller has a fixed insertion depth underwater and is easily damaged when installed at the bottom of the dock. Content of the Utility Model

[0004] The purpose of the utility model is to provide a lifting full-rotation thruster for the deficiencies of the prior art, which can realize the lifting and 360° rotation of the propeller, and is more suitable for the dock used in a relatively shallow port basin to avoid damage to the propeller.

[0005] The technical solution to achieve the purpose of the utility model is as follows:

[0006] A lifting full-rotation thruster includes a cylindrical shell. The lower end of the outer peripheral surface of the shell is fixedly installed at the bottom of the dock, and hydraulic cylinders are symmetrically and fixedly arranged on both sides. The piston rods of the two hydraulic cylinders are arranged vertically upward and are fixedly connected to an upper bracket. A hydraulic slewing mechanism is fixedly installed on the upper bracket. The output end of the hydraulic slewing mechanism coaxially penetrates through the shell and is fixedly connected to a propeller. The propeller is a hydraulically driven propeller and is externally covered with a protective cover.

[0007] Further, the hydraulic slewing mechanism includes a hydraulic motor and a hydraulic slewing center. The hydraulic slewing center includes a slewing housing fixedly installed on the upper bracket and a slewing shaft coaxially and rotatably installed in the slewing housing. The hydraulic motor is fixedly installed on the upper bracket, is in gear transmission connection with the slewing shaft and drives the slewing shaft to rotate. The bottom of the slewing shaft is fixedly connected to a shaft tube, and a rotary sealed hydraulic circuit is communicated between the outer peripheral surface of the slewing housing and the shaft tube. The propeller is fixedly installed at the lower end of the shaft tube and is communicated with the rotary hydraulic circuit.

[0008] Furthermore, a first annular channel and a second annular channel are coaxially and sealedly arranged between the rotary shaft and the rotary housing. The rotary housing is provided with a first oil inlet hole and a first oil outlet hole. The bottom end of the rotary shaft is provided with a second oil outlet hole and a second oil inlet hole. The first oil inlet hole, the first annular channel and the second oil outlet hole form an oil inlet channel. The second oil inlet hole, the second annular channel and the first oil outlet hole form an oil outlet channel. The oil inlet channel and the oil outlet channel are independent of each other to form a rotary sealed hydraulic circuit.

[0009] Furthermore, the output end of the hydraulic motor penetrates through the upper bracket and is coaxially fixedly connected with a first gear. The lower end of the rotary shaft is coaxially fixedly connected with a second gear. The first gear and the second gear are meshed with each other.

[0010] Furthermore, both the first gear and the second gear are helical gears.

[0011] Furthermore, an integrally formed annular convex part is coaxially arranged at the lower end of the rotary shaft. A circle of first connection holes are evenly arranged along the circumference of the annular convex part. The second gear is provided with second connection holes corresponding to the first connection holes along the circumference. Bolts are fixedly connected between the second connection holes and the corresponding first connection holes.

[0012] Furthermore, guide rods fixedly installed on the upper bracket are symmetrically arranged on both sides of the hydraulic cylinder. The guide rods are arranged vertically downward and are slidably installed with guide bearings. A flange cover is fixedly connected between the two guide bearings. The housing covers the guide rods and is fixedly connected with the flange cover. The shaft tube penetrates through the flange cover and is connected with the flange cover by a first sliding and rolling composite bearing.

[0013] Furthermore, a lower bracket located inside the housing is fixedly connected between the lower ends of the two guide rods. The shaft tube penetrates through the lower bracket and is connected with the lower bracket by a second sliding and rolling bearing.

[0014] Furthermore, mounting ears integrally formed are symmetrically arranged at the lower end of the outer peripheral surface of the housing. The cylinder block of the hydraulic cylinder is vertically fixed on the mounting ears. The bottom of the mounting ears is fixedly installed on the bottom of the dock.

[0015] Adopting the above technical solutions, the utility model has the following beneficial effects:

[0016] (1) The utility model is provided with a hydraulic cylinder and a hydraulic slewing mechanism. The hydraulic slewing mechanism drives the propeller to make a 360° slewing motion, so as to rotate more effectively in waters such as port areas. The hydraulic cylinder drives the upper bracket to move up and down relative to the housing, and then drives the hydraulic slewing mechanism and the propeller to move up and down synchronously, so that the propeller can be retracted into the housing in a shallower dock to avoid deformation and failure of the propeller after touching the bottom. At the same time, all drives including the propeller adopt hydraulics, with stable power, large stiffness, high precision and fast response, and can be better applied to a dock used in a shallower dock.

[0017] (2) The hydraulic slewing mechanism of the utility model drives the rotating shaft of the hydraulic slewing center to rotate through a hydraulic motor via gear transmission, so as to achieve 360° slewing. By setting a rotating seal hydraulic circuit between the rotating housing and the rotating shaft, the problem of winding of the pipeline for conveying hydraulic oil is avoided.

[0018] (3) The utility model cleverly uses an annular channel to realize the rotary transmission of hydraulic power, and then solves the problem of pipeline winding, with a simple structure.

[0019] (4) The utility model uses meshing gears to realize the transmission of rotary motion, which is convenient for more accurately controlling the rotation angle.

[0020] (5) The first gear and the second gear of the utility model are both helical gears, with good meshing performance, large contact ratio and more stable transmission.

[0021] (6) The utility model realizes the fixed connection between the second gear and the rotating shaft by bolts passing through corresponding connection holes, which is convenient for assembly.

[0022] (7) The utility model is provided with guide rods on both sides of the hydraulic cylinder to realize the guiding function and improve the stability of the lifting motion of the propeller.

[0023] (8) The utility model improves the structural strength of the guiding structure by adding a lower bracket, and further improves the stability of the lifting motion of the propeller.

[0024] (9) The utility model provides an installation position for the hydraulic cylinder by presetting mounting ears integrally formed with the housing, and at the same time is convenient for fixedly connecting with the bottom of the dock. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to make the content of the utility model be more clearly understood, the following further details the utility model according to specific embodiments in conjunction with the drawings, wherein:

[0026] Figure 1 is a perspective view of the utility model;

[0027] Figure 2 is a schematic diagram of the internal structure of the utility model;

[0028] Figure 3 For the present utility model Figure 2 is a partial enlarged view of part A in it.

[0029] The reference numerals in the drawings are as follows:

[0030] housing 1, mounting ear 1-1, hydraulic cylinder 2, upper bracket 3, hydraulic slewing mechanism 4, hydraulic motor 4-1, slewing housing 4-2, rotary shaft 4-3, annular convex part 4-3-1, first gear 4-4, second gear 4-5, shaft tube 4-6, first annular channel 4-7, second annular channel 4-8, propeller 5, protective cover 6, guide rod 7, guide bearing 8, flange cover 9, first sliding and rolling composite bearing 10, lower bracket 11, second sliding and rolling bearing 12. Detailed implementation manners

[0031] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the drawings of the specification and specific implementation manners.

[0032] (Embodiment 1)

[0033] As Figures 1 to 3 shown in the lifting and fully slewing thruster, which includes a housing 1, a hydraulic cylinder 2, an upper bracket 3, a hydraulic slewing mechanism 4 and a propeller 5. The housing 1 is of a cylindrical structure, and the lower end of the outer peripheral surface is fixedly installed at the bottom of the dock and is stationary relative to the bottom of the dock. There are two hydraulic cylinders 2 symmetrically fixed on both sides of the housing. The piston rods of the hydraulic cylinders 2 are arranged vertically upward. The two ends of the upper bracket 3 are respectively fixedly connected to the ends of the piston rods of the two hydraulic cylinders 2, and realize the lifting movement under the action of the hydraulic cylinder 2. The hydraulic slewing mechanism 4 is fixedly installed on the upper bracket 3, and the output end coaxially penetrates through the housing 1 and is fixedly connected to the propeller 5, and is used to drive the propeller 5 to perform a 360° slewing movement. When the hydraulic cylinder 2 makes a lifting movement, the upper bracket 3 drives the hydraulic slewing mechanism 4 and the propeller 5 to lift and lower synchronously and retract into the housing 1, thereby effectively protecting the propeller and avoiding being crushed. In addition, the propeller 5 is driven by a hydraulic pressure, so that the driving of the whole thruster adopts hydraulic pressure, with stable power, large stiffness, high precision and fast response. At the same time, a protective cover 6 is arranged outside the propeller 5 to avoid foreign objects hitting the propeller and protect the propeller, and it can be better applied to the dock used in a relatively shallow harbor basin.

[0034] Specifically, a pair of integrally formed mounting ears 1-1 are symmetrically arranged at the lower end of the outer peripheral surface of the housing 1 to ensure the connection strength between the mounting ear and the housing. Compared with welding forming, it is not easy to break. The cylinder body of the hydraulic cylinder 2 is vertically fixed on the mounting ear 1-1, and the bottom of the mounting ear 1-1 is fixedly installed at the bottom of the dock. When the propeller 5 retracts into the housing 1, only a small part of the housing is exposed from the bottom of the dock, reducing the risk of touching the bottom.

[0035] The hydraulic slewing mechanism 4 includes a hydraulic motor 4-1 and a hydraulic slewing center. The hydraulic slewing center includes a slewing housing 4-2 fixedly installed on the upper bracket 3 and a slewing shaft 4-3 rotatably installed coaxially within the slewing housing 4-2. Among them, the hydraulic motor 4-1 is fixedly installed on the upper bracket 3, the output end penetrates through the upper bracket 3 and is coaxially fixedly connected with a first gear 4-4, the lower end of the slewing shaft 4-3 is coaxially fixedly connected with a second gear 4-5, and the first gear 4-4 and the second gear 4-5 are meshed with each other. The first gear 4-4 is driven to rotate by the hydraulic motor 4-1, and then the slewing shaft 4-3 is driven to rotate by the second gear 4-5. A shaft tube 4-6 is fixedly connected to the bottom of the slewing shaft, and the propeller 5 is fixedly installed at the lower end of the shaft tube 4-6, thereby realizing the 360° rotation of the propeller 5. In order to improve the smoothness of the rotational movement, both the first gear 4-4 and the second gear 4-5 in this embodiment are helical gears, with good meshing performance, large contact ratio, and more stable transmission. An integrally formed annular convex portion 4-3-1 is coaxially provided at the lower end of the slewing shaft 4-3. A circle of first connection holes is evenly provided along the circumferential direction of the annular convex portion 4-3-1. Second connection holes corresponding to the first connection holes are provided along the circumferential direction of the second gear 4-5. Bolts are fixedly connected between the second connection holes and the corresponding first connection holes, thereby realizing the fixed connection between the second gear 4-5 and the slewing shaft 4-3, with a simple structure and convenient assembly.

[0036] The slewing shaft 4-3 and the slewing housing 4-2 are isolated by four skeleton oil seals, thereby coaxially sealingly provided with a first annular channel 4-7 and a second annular channel 4-8. A first oil inlet hole and a first oil outlet hole are provided on the slewing housing 4-2, and a second oil outlet hole and a second oil inlet hole are opened at the bottom end of the slewing shaft 4-3. The first oil inlet hole, the first annular channel 4-7 and the second oil outlet hole 4-12 form an oil inlet channel, and the second oil inlet hole, the second annular channel 4-8 and the first oil outlet hole form an oil outlet channel, and the oil inlet channel and the oil outlet channel are independent of each other, forming a rotating sealed hydraulic circuit. The propeller 5 is connected to the rotating sealed hydraulic circuit through a pipeline and is communicated with external hydraulic oil through the rotating sealed hydraulic circuit, realizing the rotating transmission of hydraulic power, and thus solving the problem of pipeline entanglement, with a simple structure.

[0037] To improve the stability of the lifting movement of the propeller 5, in this embodiment, guide rods 7 fixedly installed on the upper support 3 are symmetrically arranged on both sides of the hydraulic cylinder 2. The guide rods 7 are arranged vertically downward and are slidably installed with guide bearings 8 to form a guiding structure. A flange cover 9 is fixedly connected between the two guide bearings 8. The housing 1 covers the outside of the guide rods 7 and is fixedly connected to the flange cover 9. The shaft tube 4-6 penetrates through the flange cover 9 and is connected with a first sliding and rolling composite bearing 10 or a rotary seal ring between the shaft tube 4-6 and the flange cover 9. The guiding function of lifting is realized through the guiding structure, and the stability of the propeller lifting movement is improved. To improve the structural stability of the guiding structure, in this embodiment, a lower support 11 located inside the housing 1 is fixedly connected between the lower ends of the two guide rods 7. The shaft tube 4-6 penetrates through the lower support 11 and is connected with a second sliding bearing 12 or a rotary seal ring between the shaft tube 4-6 and the lower support 11, further improving the stability of the propeller 5 lifting movement.

[0038] The utility model is provided with a hydraulic cylinder 2 and a hydraulic slewing mechanism 4. The hydraulic slewing mechanism 4 drives the propeller 5 to make a 360° slewing movement, so as to rotate more effectively in waters such as port areas; the hydraulic cylinder 2 drives the upper support 3 to make a lifting movement relative to the housing 1, and then drives the hydraulic slewing mechanism 4 and the propeller 5 to lift synchronously, so as to retract the propeller into the housing within a relatively shallow dock, avoiding deformation and failure of the propeller after touching the bottom. At the same time, all drives including the propeller 5 adopt hydraulic pressure, with stable power, large stiffness, high precision and fast response, and can be better applied to a dock used in a relatively shallow dock.

[0039] The specific embodiments described above further elaborate on the purpose, technical solutions and beneficial effects of the utility model. It should be understood that the above are only specific embodiments of the utility model and are not used to limit the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the utility model shall be included within the protection scope of the utility model.

Claims

1. A lifting and fully rotating thruster, characterized in that: It includes a housing of cylindrical structure. The lower end of the outer peripheral surface of the housing is fixedly installed at the bottom of the dock, and hydraulic cylinders are symmetrically and fixedly arranged on both sides. The piston rods of the two hydraulic cylinders are arranged vertically upward and are fixedly connected to an upper bracket. A hydraulic slewing mechanism is fixedly installed on the upper bracket. The output end of the hydraulic slewing mechanism coaxially penetrates through the housing and is fixedly connected to a propeller. The propeller is a hydraulically driven propeller and is externally covered with a protective cover.

2. The liftable full-rotation thruster according to claim 1, characterized in that: The hydraulic slewing mechanism includes a hydraulic motor and a hydraulic slewing center. The hydraulic slewing center includes a slewing housing fixedly installed on the upper bracket and a rotary shaft coaxially and rotatably installed in the slewing housing. The hydraulic motor is fixedly installed on the upper bracket, is in gear transmission connection with the rotary shaft and drives the rotary shaft to rotate. A shaft tube is fixedly connected to the bottom of the rotary shaft, and a rotary seal hydraulic circuit is communicated between the shaft tube and the outer peripheral surface of the slewing housing. The propeller is fixedly installed at the lower end of the shaft tube and is communicated with the rotary hydraulic circuit.

3. The liftable full-rotation thruster according to claim 2, wherein: A first annular channel and a second annular channel are coaxially and sealed between the rotary shaft and the slewing housing. The slewing housing is provided with a first oil inlet hole and a first oil outlet hole. The bottom end of the rotary shaft is provided with a second oil outlet hole and a second oil inlet hole. The first oil inlet hole, the first annular channel and the second oil outlet hole form an oil inlet channel. The second oil inlet hole, the second annular channel and the first oil outlet hole form an oil outlet channel. The oil inlet channel and the oil outlet channel are independent of each other to form a rotary seal hydraulic circuit.

4. The liftable full-rotation thruster according to claim 2, characterized in that: The output end of the hydraulic motor penetrates through the upper bracket and is coaxially fixedly connected to a first gear. The lower end of the rotary shaft is coaxially fixedly connected to a second gear. The first gear and the second gear are meshed with each other.

5. The liftable full-rotation thruster according to claim 4, characterized in that: Both the first gear and the second gear are helical gears.

6. The lift type full rotation thruster according to claim 4, characterized in that: An integrally formed annular convex part is coaxially arranged at the lower end of the rotary shaft. A circle of first connection holes are uniformly arranged on the annular convex part along the circumferential direction. Second connection holes corresponding to the first connection holes are arranged on the second gear along the circumferential direction. Bolts are fixedly connected between the second connection holes and the corresponding first connection holes.

7. The liftable full-rotation thruster according to claim 2, characterized in that: Guide rods fixedly installed on the upper bracket are symmetrically arranged on both sides of the hydraulic cylinder. The guide rods are arranged vertically downward and are slidably installed with guide bearings. A flange cover is fixedly connected between the two guide bearings. The housing covers the guide rods and is fixedly connected to the flange cover. The shaft tube penetrates through the flange cover and is connected with the flange cover by a first sliding and rolling composite bearing.

8. The liftable full-rotation thruster according to claim 7, wherein: A lower bracket located inside the housing is fixedly connected between the lower ends of the two guide rods. The shaft tube penetrates through the lower bracket and is connected with the lower bracket by a second sliding rolling bearing.

9. The lift type full-rotation thruster according to claim 1, wherein: Mounting ears are symmetrically and integrally formed at the lower end of the outer peripheral surface of the housing. The cylinder body of the hydraulic cylinder is vertically and fixedly arranged on the mounting ears. The bottom of the mounting ears is fixedly installed at the bottom of the dock.

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