Speed increasing mechanism

Abstract

The utility model belongs to the technical field of power generation equipment, and particularly relates to a speed increasing mechanism which comprises a box body, a speed increasing module is arranged in the box body, the speed increasing module comprises a shell, and a rotating disc and a rotating shaft are arranged in the shell. The rotating disc comprises a central column and a disc, the rotating shaft comprises a shaft rod and a gear, the shaft rod is perpendicular to the central column, the gear is coaxially fixed to the shaft rod, and the gear is meshed with insections on the disc; the rotating disc rotates to drive the shaft rod to rotate synchronously. A plurality of speed increasing modules are provided; and in every two adjacent speed increasing modules, the shaft rod of one speed increasing module is in transmission connection with the central column of the other speed increasing module. According to the utility model, energy obtained by a plurality of speed increasing modules can be concentrated on the shaft rod of one speed increasing module to be output uniformly, and meanwhile, multi-stage speed increasing can be realized.

Description

Technical Field

[0001] This utility model relates to the field of power generation equipment technology, specifically to a speed-increasing mechanism. Background Technology

[0002] A water turbine is an energy conversion device used to convert the kinetic energy of flowing water into usable mechanical energy. Its basic working principle is that the impact force or flow of water causes the turbine blades to rotate, which in turn drives a generator or other mechanical equipment on the central shaft. Currently, water turbines are widely used in hydropower generation, pumping stations, and other water conservancy projects. Small water turbines, in particular, are more widely used in areas with abundant water resources and limited power supply due to their flexibility and relatively low cost, making them suitable for a wider range of applications.

[0003] Small hydro turbines are generally used in relatively small rivers or canals where the water flow velocity is relatively low, resulting in a slow rotation speed of the impeller blades. Therefore, a speed-increasing mechanism needs to be installed on the impeller shaft to increase the shaft speed before transmitting the speed for output. For example, CN219344863U discloses a central speed-increasing structure for a vertical hydro turbine, which includes a housing, a left cover, a right cover, an output shaft, an internal gear ring, a drive gear, and a central gear. The left and right covers are symmetrically arranged on both sides of the housing, and multiple drive gears are installed between them. An internal gear ring is fixedly installed inside the housing, meshing with multiple drive gears. A central gear is installed on the output shaft, meshing with multiple drive gears. The central speed-increasing structure in this application can effectively increase the output shaft speed, thereby increasing power generation. However, this structure is only suitable for speeding up a single turbine impeller shaft and cannot simultaneously achieve energy concentration and multi-stage speed-increasing processing for multiple impeller shafts, thus the energy conversion efficiency needs to be improved. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings of the prior art and provide a speed-increasing mechanism that can simultaneously concentrate and speed up the energy of multiple impeller shafts in a turbine unit, improve energy conversion efficiency, and has a simple structure, small size, and convenient installation.

[0005] The technical solution of this utility model is as follows: a speed-increasing mechanism includes a housing, in which a speed-increasing module is disposed. The speed-increasing module includes a shell, and inside the shell are a turntable and a rotating shaft. The turntable includes a central column and a disc. The two ends of the central column are rotatably fixed to the shell, and the disc is fixed to the middle of the central column. The surface of the disc is provided with teeth. The rotating shaft includes a shaft rod and a gear. The shaft rod is perpendicular to the central column, and the gear is coaxially fixed on the shaft rod. The shaft rod is rotatably mounted on the shell, and one end of the shaft rod extends out of the shell. The gear meshes with the teeth on the disc. When the turntable rotates, it drives the shaft rod to rotate synchronously. There are multiple speed-increasing modules, and in two adjacent speed-increasing modules, the shaft rod of one speed-increasing module is connected to the central column of another speed-increasing module for transmission. This allows the energy of multiple speed-increasing modules to be concentrated on the shaft rod of one speed-increasing module for unified output, and also enables multi-stage speed increase.

[0006] Furthermore, there are three speed-increasing modules, distributed on the left, center, and right sides within the housing. The shafts of the speed-increasing modules on both sides are connected to the two ends of the central column of the middle speed-increasing module. This ensures that the rotational motion obtained by the speed-increasing modules on the left and right sides can be transmitted to the middle speed-increasing module after a single stage of speed increase. Thus, when the rotational motion is transmitted from the shaft of the middle speed-increasing module, it has undergone a total of two stages of speed increase relative to the original impeller shaft rotational speed.

[0007] Furthermore, the central column of the speed-increasing module located on both sides can be connected to an impeller shaft for transmission.

[0008] Furthermore, the shaft of the intermediate speed-increasing module is either perpendicular or parallel to the bottom surface of the casing. When the shaft of the intermediate speed-increasing module is perpendicular to the bottom surface, it is more suitable for vertical turbine units; when the shaft of the intermediate speed-increasing module is parallel to the bottom surface, it is more suitable for horizontal turbine units.

[0009] Furthermore, the teeth on the disc are helical teeth, and the gear on the shaft matches the helical teeth.

[0010] Furthermore, the bottom surface of the housing is provided with a through hole, and a sealing bushing is provided at the through hole. The impeller shaft passes through the sealing bushing and is connected to the speed-increasing module inside the housing.

[0011] Furthermore, the top surface of the box is open, and a cover plate is installed on the top surface. The box is filled with lubricating oil.

[0012] Furthermore, a mounting bracket is provided inside the housing to fix multiple speed-increasing modules. The cross-section of the mounting bracket is U-shaped.

[0013] Furthermore, the housing includes a cylindrical part and a conical part. A mounting plate is provided at the position where the conical part connects to the cylindrical part. A fixing seat is provided on the side of the mounting plate facing the cylindrical part. There are two fixing seats, which are used to fix the two ends of the central column respectively. The mounting plate is also provided with a notch, which allows the disc to span across the cylindrical and conical parts of the housing, thereby making full use of the housing space, reducing the volume of the speed-up module, and making the structure more compact.

[0014] Furthermore, the mounting plate is provided with through holes for fixing the ends of the shaft.

[0015] The principle of this invention is as follows: In this invention, the turntable of a speed-increasing module rotates under the drive of the power shaft, and the disc on the turntable will also rotate synchronously, driving the shaft to rotate. This makes the number of teeth on the disc greater than the number of teeth on the gear on the shaft, so that when the turntable rotates once, the shaft will rotate more than once (i.e., speed increase is achieved). At the same time, in this invention, the shafts of two speed-increasing modules can be connected to the central column of another speed-increasing module simultaneously to drive the central column of that speed-increasing module to rotate. In this case, the energy obtained by the two speed-increasing modules can be concentrated into one speed-increasing module and output by the shaft on that speed-increasing module.

[0016] The beneficial effects of this utility model compared with the prior art are as follows:

[0017] 1. The speed-increasing mechanism in this utility model employs multiple speed-increasing modules working in synergy, which can simultaneously increase the rotational speed of multiple impeller shafts and concentrate the energy of multiple impeller shafts, thereby improving the conversion and utilization efficiency.

[0018] 2. The speed-increasing mechanism in this utility model has a high degree of integration. Multiple speed-increasing modules can be tightly installed inside the housing. The bottom through hole of the housing is sealed by a sealing bushing to prevent liquid from flowing in or out of the housing. Lubricating oil can be filled inside the housing so that the turntable and shaft in the speed-increasing module work in the lubricating oil, thereby improving service life.

[0019] 3. The housing has an open top structure. When the speed-increasing mechanism needs to be installed or maintained, the speed-increasing modules can be directly hoisted from above the housing using a hoisting mechanism. Compared with the installation of other speed-increasing mechanisms, the installation of the speed-increasing mechanism in this utility model is simpler and more convenient.

[0020] 4. The speed-increasing mechanism in this application can be used not only for water turbine units, but also for other power systems that require speed regulation (such as wind power generation systems), and has strong versatility. Attached Figure Description

[0021] Figure 1 This is a perspective view of Embodiment 1 of the present utility model;

[0022] Figure 2This is a front view schematic diagram of Embodiment 1 of this utility model;

[0023] Figure 3 This is a three-dimensional schematic diagram of the speed-up module in Embodiment 1 of this utility model;

[0024] Figure 4 This is a side view of the speed-up module in Embodiment 1 of this utility model;

[0025] Figure 5 This is a schematic diagram of the speed-up module in Embodiment 1 of this utility model, omitting the cylindrical portion of the housing;

[0026] Figure 6 This is a cross-sectional schematic diagram of the speed-up module in Embodiment 1 of this utility model;

[0027] Figure 7 This is a schematic diagram of the shell in Embodiment 1 of this utility model after omitting the cylindrical portion;

[0028] Figure 8 This is an exploded view of the speed-up module in Embodiment 1 of this utility model;

[0029] In the diagram: 1-box body, 2-speed increase module, 21-shell, 211-conical part, 212-cylindrical part, 22-turntable, 221-central column, 222-disc, 23-fixed seat, 24-rotating shaft, 241-shaft, 242-gear, 25-mounting plate, 251-through hole, 26-bearing, 3-mounting bracket, 4-power shaft. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to specific embodiments. Methods or functional components not specifically described in the embodiments are all prior art.

[0031] Example 1

[0032] like Figure 1-8As shown, this embodiment is a speed-increasing mechanism, including a housing 1. A speed-increasing module 2 is disposed within the housing 1. The speed-increasing module 2 includes a housing 21, inside which a turntable 22 and a rotating shaft 24 are disposed. The turntable 22 includes a central column 221 and a disc 222. The two ends of the central column 221 are rotatably fixed to the housing 21 via bearings 26. The disc 222 is fixed to the middle of the central column 221, and its surface is provided with teeth. The rotating shaft 24 includes a shaft 241. The gear 242 and the shaft 241 are arranged perpendicularly to each other and the central column 221. The gear 242 is fixed coaxially on the shaft 241. The shaft 241 is rotatably mounted on the housing 21, and one end of the shaft 241 extends out of the housing 21. The teeth on the disc 222 are helical teeth. The gear 242 on the shaft 241 matches the helical teeth, so that the gear 242 meshes with the teeth on the disc 222. When the turntable 22 rotates, it drives the shaft 241 to rotate synchronously.

[0033] In this embodiment, there are three speed-increasing modules 2, which are distributed on the left, middle and right sides inside the housing 1. The shafts 241 of the speed-increasing modules 2 on both sides are connected to the two ends of the central column 221 of the middle speed-increasing module 2. The central column 221 of the speed-increasing modules 2 on both sides can be connected to a power shaft 4. The power shaft 4 can be the impeller shaft of a water turbine, and the two impeller shafts rotate in opposite directions. This allows the rotational motion obtained by the speed-increasing modules 2 on both the left and right sides to be transmitted to the middle speed-increasing module 2 after one stage of speed-increasing. Thus, when the rotational motion is transmitted from the shaft 241 on the middle speed-increasing module 2, it can be accelerated by two stages relative to the original rotational speed input from the power shaft 4.

[0034] In this embodiment, the bottom surface of the housing 1 is provided with a through hole 251, and a sealing bushing is provided at the through hole 251. The impeller shaft passes through the sealing bushing and is connected to the speed-increasing module 2 inside the housing 1. The top surface of the housing 1 is open and is provided with a cover plate, allowing lubricating oil to be filled inside the housing 1 during operation. A mounting bracket 3 is provided inside the housing 1 to fix the speed-increasing module 2, and the cross-section of the mounting bracket 3 is U-shaped. Three speed-increasing modules 2 are fixed sequentially on the mounting bracket 3, with the middle speed-increasing module 2 located exactly in the groove in the middle of the mounting bracket 3.

[0035] In this embodiment, the housing 21 includes a cylindrical portion 212 and a conical portion 211. A mounting plate 25 is provided at the position where the conical portion 211 connects to the cylindrical portion 212. The mounting plate 25 is provided with a through hole 251 for fixing the end of the shaft 241. A fixing seat 23 is provided on the side of the mounting plate 25 facing the cylindrical portion 212. There are two fixing seats 23. The fixing seats 23 are provided with bearing fixing holes for fixing the bearings 26 at both ends of the central column 221. The mounting plate 25 is also provided with a notch. This notch facilitates the disc 222 to span across the cylindrical portion 212 and the conical portion 211 of the housing 21, thereby making full use of the internal space of the housing 21, reducing the overall volume of the speed-increasing module 2, and making the structure more compact.

[0036] Example 2

[0037] The difference between this embodiment and Embodiment 1 is that the speed-up mechanism in this embodiment includes nine speed-up modules 2, and the nine speed-up modules 2 are grouped into groups of three. Each group internally forms the connection structure of the three speed-up modules 2 in Embodiment 1, and the groups of three speed-up modules then form a similar speed-up structure as a whole. Similarly, by using the basic structure of this invention and adding more speed-up modules 2, the speed-up level can be further increased.

[0038] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A speed-increasing mechanism, comprising a housing, wherein a speed-increasing module is disposed within the housing, characterized in that: The speed-up module includes a housing, inside which a turntable and a rotating shaft are installed; The turntable includes a central column and a disc. The two ends of the central column are rotatably fixed to the housing, and the disc is fixed in the middle of the central column. The surface of the disc is provided with teeth. The rotating shaft includes a shaft and a gear. The shaft is perpendicular to the central column and has a gear on it. The shaft is rotatably mounted on the housing, and one end of the shaft extends out of the housing. The gear meshes with the teeth on the disc. When the disc rotates, it drives the shaft to rotate synchronously. There are multiple speed-increasing modules, and in two adjacent speed-increasing modules, the shaft of one speed-increasing module is connected to the central column of the other speed-increasing module via a transmission connection.

2. The speed increasing mechanism of claim 1, wherein: There are three speed-increasing modules, which are distributed on the left, middle and right sides of the housing. The shafts of the speed-increasing modules on the two sides are respectively connected to the two ends of the central column of the middle speed-increasing module.

3. The speed increasing mechanism of claim 2, wherein: The central columns of the speed-increasing modules on both sides are connected to the impeller shaft drive.

4. The speed increasing mechanism of claim 2, wherein: The shaft of the intermediate speed-increasing module is perpendicular or parallel to the bottom surface of the housing.

5. The speed increasing mechanism of claim 1, wherein: The teeth on the disk are helical teeth, and the gear on the shaft matches the helical teeth.

6. The speed increasing mechanism of claim 1, wherein: The bottom surface of the housing is provided with a through hole, and a sealing bushing is provided at the through hole. The impeller shaft passes through the sealing bushing and is connected to the speed-increasing module inside the housing.

7. The speed increasing mechanism of claim 1, wherein: The top surface of the box is open, and a cover plate is provided on the top surface. When in use, the box is filled with lubricating oil.

8. The speed increasing mechanism of claim 2, wherein: The housing is equipped with a mounting bracket for fixing multiple speed-increasing modules. The mounting bracket has a U-shaped cross-section.

9. The speed increasing mechanism of claim 1, wherein: The housing includes a cylindrical part and a conical part. A mounting plate is provided at the position where the conical part and the cylindrical part are connected. A fixing seat is provided on the side of the mounting plate facing the cylindrical part. There are two fixing seats, which are used to fix the two ends of the central column respectively. The mounting plate is also provided with a notch, which allows the disc to span across the cylindrical part and the conical part of the housing, thereby making full use of the housing space and reducing the volume of the speed-up module.

10. The speed increasing mechanism of claim 9, wherein: The mounting plate is provided with through holes for fixing the end of the shaft.

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