Split shaft type transmission system for offshore renewable energy comprehensive platform

Abstract

The utility model discloses a split shaft type transmission system for an offshore renewable energy comprehensive platform. The split shaft type transmission system comprises a plurality of split shafts, a plurality of gear steering boxes and a speed increasing box. A plurality of split shafts are connected end to end to form a common shaft, adjacent split shafts are connected through a coupling device, and each split shaft is fixed on an offshore comprehensive platform through a bearing seat. One split shaft is in transmission with the speed increasing box through meshing of the first transmission gear and the second transmission gear; and each split shaft is in transmission with the gear steering box through meshing of the third transmission gear and the fourth transmission gear. The split shaft is simple in structure and convenient to mount, manufacturing and mounting difficulty can be greatly reduced, the length of the common shaft and the number of the gear steering boxes can be flexibly adjusted, the split shaft occupies small space, and transportation and storage are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission, and in particular to a split-shaft transmission system for an integrated offshore renewable energy platform. Background Technology

[0002] The offshore renewable energy integrated platform is an offshore platform that provides continuous energy through a wave power generation system. The wave power generation system operates by installing a row of transmission rods around the platform. The overhanging ends of these rods are connected to floats, which float on the sea surface. The floats move with the sea's rise and fall, causing the transmission rods to swing up and down. The transmission rods, through a gearbox, drive a single shaft to rotate, which in turn drives a generator through a speed-increasing gearbox to generate electricity. However, the following problems were discovered during actual manufacturing and commissioning: 1. The shaft is long and occupies a large amount of space, increasing transportation and storage costs; 2. The integrated shaft increases installation difficulty, requiring leveling at every fixing point during installation; 3. Multiple transmission rods arranged in a row cause each rod to swing up and down sequentially when waves arrive, transmitting power to the shaft sequentially. The more transmission rods there are, the more continuous the power transmission, but the larger the entire transmission system becomes. The integrated shaft places higher precision requirements on each transmission component, significantly increasing the difficulty and cost of manufacturing and installation.

[0003] Therefore, how to create a new split-shaft drive system for integrated offshore renewable energy platforms is one of the important research and development topics at present. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a split shaft transmission system for an integrated offshore renewable energy platform, which uses multiple split shafts connected end to end to form a common shaft, greatly reducing the difficulty and cost of manufacturing and installation. Each split shaft occupies little space and is easy to transport and store, thereby overcoming the shortcomings of the prior art.

[0005] To solve the above-mentioned technical problems, this utility model provides a split shaft transmission system for an integrated offshore renewable energy platform, including several split shafts, several gear steering boxes, and speed increasers;

[0006] Several separate shafts are connected end to end to form a common shaft. Adjacent separate shafts are connected by a coupling device. Each separate shaft is fixed to the offshore integrated platform by a bearing seat.

[0007] A first transmission gear is installed on one of the separate shafts of the common shaft, and a second transmission gear is installed on the speed increaser. The first transmission gear meshes with the second transmission gear to realize the transmission between the common shaft and the speed increaser.

[0008] Each split shaft is equipped with a third transmission gear, and each gear steering box is equipped with a fourth transmission gear. The third transmission gear meshes with the fourth transmission gear to realize the transmission between the split shaft and the corresponding gear steering box.

[0009] As an improvement of this utility model, the first transmission gear, the second transmission gear, the third transmission gear, and the fourth transmission gear are all bevel gears.

[0010] Furthermore, the coupling device includes a splined mandrel, an outer sleeve shaft, and two universal joints. The outer circumference of the splined mandrel is machined with splines, and the inner circumference of the outer sleeve shaft is machined with keyways. The outer sleeve shaft is fitted onto the outside of the splined mandrel, allowing axial sliding between the splined mandrel and the outer sleeve shaft. A universal joint is fixedly connected to the end of the splined mandrel and the end of the outer sleeve shaft, and the universal joint is fixed to the split shaft by a pin.

[0011] Furthermore, the universal joint is a cross-shaped universal joint.

[0012] With this design, the present invention has at least the following advantages:

[0013] 1. Multiple split shafts are connected end to end by a coupling device to form a common shaft. Under the premise of meeting the transmission requirements, slight axial offset and angular deviation between each split shaft are allowed, which greatly reduces the difficulty of processing and installation, and also reduces the precision requirements of all gear steering boxes, thus reducing manufacturing and installation costs.

[0014] 2. Each split shaft occupies little space, saving transportation and storage costs;

[0015] 3. The structure is simple and the length and bearing housing installation position can be flexibly adjusted, simplifying the original overall leveling process to partial leveling, making installation and maintenance more convenient. Attached Figure Description

[0016] The above is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model, the following describes this utility model in further detail with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the coupling device.

[0019] Explanation of reference numerals in the attached drawings: 1. Split shaft; 2. Coupling device; 21. Splined mandrel; 22. Outer shaft; 23. Universal joint; 24. Pin; 3. Bearing housing; 4. Gear steering box; 5. Speed ​​increaser; 6. First transmission gear; 7. Second transmission gear; 8. Third transmission gear; 9. Fourth transmission gear. Detailed Implementation

[0020] Please see Figure 1 This utility model provides a split shaft transmission system for an integrated offshore renewable energy platform, including several split shafts 1, several gear steering boxes 4, and speed increaser 5.

[0021] Several separate shafts 1 are connected end to end to form a common shaft. Adjacent separate shafts 1 are connected by a coupling device 2. Each separate shaft 1 is fixed to the offshore integrated platform by a bearing seat 3.

[0022] A first transmission gear 6 is installed on one of the split shafts 1 of the common shaft, and a second transmission gear 7 is installed on the speed increaser 5. The first transmission gear 6 and the second transmission gear 7 mesh to realize the transmission between the common shaft and the speed increaser 5.

[0023] Each split shaft 1 is equipped with a third transmission gear 8, and each gear steering box 4 is equipped with a fourth transmission gear 9. The third transmission gear 8 and the fourth transmission gear 9 mesh to realize the transmission between the split shaft 1 and the corresponding gear steering box 4.

[0024] It should be noted that, Figure 1 For ease of illustration, only two split shafts 1 and two gear steering boxes 4 are shown. In actual use, users can select the number of split shafts 1 and gear steering boxes 4 according to their needs. Typically, the number of split shafts 1 and gear steering boxes 4 is 3 to 6 to meet the requirement of continuous rotation of the shared shaft.

[0025] Preferably, the first transmission gear 6, the second transmission gear 7, the third transmission gear 8, and the fourth transmission gear 9 are all bevel gears.

[0026] Please see Figure 2 The coupling device 2 includes a splined mandrel 21, an outer sleeve shaft 22, and two universal joints 23.

[0027] The outer circumference of the splined mandrel 21 is machined with splines, and the inner circumference of the outer sleeve 22 is machined with corresponding keyways. The outer sleeve 22 is fitted onto the outside of the splined mandrel 21, allowing axial sliding between the splined mandrel 21 and the outer sleeve 22, so that the overall length of the coupling device 2 can be slightly adjusted while satisfying torque transmission requirements.

[0028] In this embodiment, the universal joint 23 is a cross-shaped universal joint, which includes two fork-shaped parts and a cross shaft. The forks of the two fork-shaped parts face each other and are connected by the cross shaft. The root of one fork-shaped part (depending on its position) is fixedly connected to the end of the spline spindle 21 or the outer sleeve shaft 22, while the root of the other fork-shaped part is machined into a sleeve shape, so that the split shaft 1 can be inserted and fixed by the pin 24.

[0029] This utility model has a simple structure and is easy to install, which can greatly reduce the difficulty of manufacturing and installation. The length of the shared shaft and the number of gear steering boxes can be flexibly adjusted, and the split shaft occupies little space, making it easy to transport and store.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent changes or alterations made by those skilled in the art using the above-disclosed technical content shall fall within the protection scope of the present utility model.

Claims

1. A split-shaft transmission system for an integrated offshore renewable energy platform, characterized in that, It includes several split shafts, several gear steering boxes, and speed increasers; Several separate shafts are connected end to end to form a common shaft. Adjacent separate shafts are connected by a coupling device. Each separate shaft is fixed to the offshore integrated platform by a bearing seat. A first transmission gear is installed on one of the separate shafts of the common shaft, and a second transmission gear is installed on the speed increaser. The first transmission gear meshes with the second transmission gear to realize the transmission between the common shaft and the speed increaser. Each split shaft is equipped with a third transmission gear, and each gear steering box is equipped with a fourth transmission gear. The third transmission gear meshes with the fourth transmission gear to realize the transmission between the split shaft and the corresponding gear steering box.

2. The split-shaft transmission system for an integrated offshore renewable energy platform according to claim 1, characterized in that, The first transmission gear, the second transmission gear, the third transmission gear, and the fourth transmission gear are all bevel gears.

3. The split-shaft transmission system for an integrated offshore renewable energy platform according to claim 1, characterized in that, The coupling device includes a splined mandrel, an outer sleeve shaft, and two universal joints. The outer circumference of the splined mandrel is machined with splines, and the inner circumference of the outer sleeve shaft is machined with keyways. The outer sleeve shaft is fitted onto the outside of the splined mandrel, allowing axial sliding between the splined mandrel and the outer sleeve shaft. A universal joint is fixedly connected to the end of the splined mandrel and the end of the outer sleeve shaft, and the universal joints are fixed to the split shaft by pins.

4. The split-shaft transmission system for an integrated offshore renewable energy platform according to claim 3, characterized in that, The universal joint is a cross-type universal joint.

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