Blade fixing structure of water wheel mechanism

Abstract

The utility model discloses a blade fixing structure of a water wheel mechanism and aims to provide the blade fixing structure of the water wheel mechanism, which is convenient for realizing the disassembly and assembly of blades on a main shaft. The device comprises a main shaft, blades, a bottom plate and a fixing assembly, a plurality of sliding grooves are formed in the main shaft, the sliding grooves are opened in the bottom end of the main shaft, the blades correspond to the sliding grooves in a one-to-one mode, sliding blocks are installed on the blades, the blades are detachably connected with the main shaft through matching of the sliding blocks and the sliding grooves, and the bottom plate is installed on the bottom face of the main shaft. The fixing assembly is installed on the bottom plate and makes contact with the blades, the supporting assembly is installed on the blades, and one end of the supporting assembly is connected with the fixing assembly. The utility model has the beneficial effects that the blades can be conveniently disassembled and assembled on the main shaft and can be disassembled and assembled in different modes, the blades and the bottom plate can be connected, the impact resistance of the blades can be improved, the positions of the blades can be limited, and the supporting assembly can be fixed.

Description

Technical Field

[0001] The utility model relates to the technical field related to water turbines, in particular to a water turbine blade fixing structure. Background Art

[0002] A hydraulic turbine is a type of power machine that converts water energy into mechanical energy and is widely used in hydropower stations and water conservancy projects. Most current hydraulic turbines are installed within hydropower stations to power generators. Water from the reservoir is introduced into the turbine through pipes and other equipment, where the turbine blades rotate and drive the generator to generate electricity. However, existing hydraulic turbine blades are welded to the side of the turbine, making it difficult to disassemble and repair the blades if they become damaged, and also hindering blade replacement. Utility Model Content

[0003] The utility model aims to overcome the disadvantage in the prior art that welded turbine blades are difficult to replace when damaged, and provides a turbine blade fixing structure which is convenient for disassembling and assembling the blades on the main shaft.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A water wheel mechanism blade fixing structure includes a main shaft, blades, a base plate and a fixing assembly, the main shaft is provided with a plurality of sliding grooves, the sliding grooves are open at the bottom end of the main shaft, the blades are provided with a plurality of sliding grooves and correspond one to one with the sliding grooves, the blades are installed with sliding blocks, the blades are detachably connected to the main shaft through the cooperation of the sliding blocks and the sliding grooves, the base plate is installed on the bottom surface of the main shaft, the fixing assembly is installed on the base plate and contacts the blades, the blades are installed with a support assembly, and one end of the support assembly is connected to the fixing assembly.

[0006] The blades are mounted on the main shaft, and the movement of the water turbine is achieved by the rotation of the main shaft. The blades mounted on the main shaft receive the impact of the water flow, thereby driving the rotation of the main shaft. The blades are slidably connected to the main shaft through the cooperation of the sliding block and the sliding groove. The sliding groove is open at the bottom surface of the main shaft, which is convenient for pushing into the sliding groove. The blades can be connected to the main shaft by sliding into the sliding groove, and then a bottom plate is installed on the bottom surface of the main shaft to contact the blades with the bottom plate. Then, the blades are restricted on the main shaft by a fixing assembly to complete the fixation of the blades on the main shaft. All blades can be removed by disassembling the bottom plate, or the blades can be restricted by disassembling the fixing assembly corresponding to the blades, and then the blades can be replaced. In order to improve the bearing capacity of the blades, a support assembly is installed on the blades to support the blades. At the same time, there is a certain angle between the blades and the bottom plate. The inclined blades can better receive the impact of the water flow, thereby achieving the purpose of facilitating the disassembly and assembly of the blades on the main shaft.

[0007] Preferably, a stud is provided on the bottom surface of the main shaft, one end of the stud is connected to the main shaft, the other end of the stud passes through the bottom plate and is placed on the other side of the bottom plate, a fixing nut is provided on the stud, and a plurality of slide-out slots are provided on the bottom plate, the slide-out slots correspond to the blades one-to-one, and the fixing assembly is installed in the slide-out slot. A screw is installed on the bottom surface of the main shaft, and the bottom plate is fixed to the main shaft by a fixing nut. The bottom plate can be disassembled to release the restriction of the blade, and a slide-out slot is provided on the bottom plate, which matches the sliding slot. The blade can slide out along the slide-out slot, and then the blade is limited by the fixing assembly installed in the slide-out slot to ensure that the sliding block of the blade is placed in the sliding slot of the main shaft. The entire blade can be disassembled and assembled by disassembling the bottom plate, and the partial blade can be disassembled and assembled by disassembling the fixing assembly. Such a design realizes different ways of disassembling and assembling the blade.

[0008] Preferably, the support assembly includes a limit frame and a card plate. The cross-section of the limit frame is U-shaped. The limit frame includes a top plate and side plates. Two side plates are provided and are respectively installed on both sides of the top plate. The top plate fits the top surface of the blade, and the side plates fit the side surfaces of the blade. One end of the side plate passes through the slide-out slot and is connected to the card plate. The card plate fits the bottom surface of the bottom plate. The support assembly limits the position of the blade by the limit frame, fits the limit frame to the blade, and then fits the card plate to the bottom plate to strengthen the restriction on the blade. The limit frame is connected to the bottom plate to support the blade. Such a design can connect the blade and the bottom plate.

[0009] Preferably, a support plate is provided on the side plate on one side of the top plate, and the cross-sectional shape of the support plate is L-shaped. The support plate includes a vertical plate and a horizontal plate, and the horizontal plate is in contact with the top surface of the bottom plate. One end of the horizontal plate is connected to one end of the side plate, and the other end of the horizontal plate is connected to one end of the vertical plate, and the other end of the vertical plate is connected to the other end of the side plate. A support plate is installed on the side where the blade forms an acute angle with the bottom plate. The support plate exists to improve the impact resistance of the blade. The impact force received by the support plate can be transferred from the side plate to the horizontal plate and the vertical plate, and then to the bottom plate by the horizontal plate. The vertical plate and the horizontal plate are L-shaped, which can better support one side of the blade and disperse the impact force on the bottom plate. Such a design can improve the impact resistance of the blade.

[0010] Preferably, the fixing components are provided with several and correspond one to one with the blades, and the fixing components include a fastening plate and an extrusion plate, the fastening plate is placed on one side of the card plate, the fastening plate is provided with a fastening screw, the fastening plate is connected to the base plate via the fastening screw, the extrusion plate is installed on a side of the fastening plate close to the card plate, the extrusion plate fits with the card plate, a filling block is installed on the side of the fastening plate close to the base plate, the filling block is placed in the slide-out slot and matches the slide-out slot. Fixing components corresponding one to one with the blades are installed on the base plate, the fastening plates of the fixing components are installed on the base plate via fastening screws, and then the extrusion plate fits with the card plate of the support component to restrict the card plate to the base plate, and the filling block is installed on the fastening plate at the same time, the filling block is placed in the slide-out slot, and the filling block can restrict the blade in the sliding slot of the main shaft. Such a design can limit the position of the blade.

[0011] Preferably, a connecting block is provided in the slide-out slot, the connecting block matching the slide-out slot, one end of the connecting block abutting the blade, the other end of the connecting block abutting the clamping plate, the extrusion plate is provided with a connecting screw, one end of the connecting screw passes through the extrusion plate and the clamping plate, and then is threadedly connected to the connecting block. A connecting block is installed at one end of the slide-out slot opening, and a connecting screw is installed on the extrusion plate. The extrusion plate, the clamping plate, and the connecting block are connected together by the connecting screw. The connecting block matches the slide-out slot in the slide-out slot, and can limit the position of the blade while limiting the support assembly. Such a design can fix the support assembly.

[0012] The beneficial effects of the utility model are: facilitating the assembly and disassembly of the blades on the main shaft, realizing different modes of assembly and disassembly of the blades, connecting the blades and the base plate, improving the impact resistance of the blades, limiting the position of the blades, and fixing the support assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 yes Figure 1 Schematic diagram of the structure of the central spindle;

[0015] Figure 3 yes Figure 1 Schematic diagram of the structure of the middle blade;

[0016] Figure 4 yes Figure 1 Schematic diagram of the structure of the fixed components.

[0017] In the figure: 1. Main shaft; 11. Sliding groove; 12. Stud; 13. Fixing nut; 2. Blade; 21. Sliding block; 3. Bottom plate; 31. Slide-out groove; 4. Fixing assembly; 41. Fastening plate; 42. Extrusion plate; 43. Fastening screw; 44. Filling block; 45. Connecting screw; 5. Support assembly; 51. Limiting frame; 52. Card; 53. Top plate; 54. Side plate; 55. Support plate; 56. Vertical plate; 57. Horizontal plate; 6. Connecting block. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] like Figure 1 In the embodiment, a water turbine blade fixing structure includes a main shaft 1, blades 2, a base plate 3 and a fixing assembly 4. The main shaft 1 is provided with a plurality of sliding grooves 11, and the sliding grooves 11 are open at the bottom end of the main shaft 1. The blades 2 are provided with a plurality of sliding grooves 11 and correspond one to one with the sliding grooves 11. A sliding block 21 is installed on the blade 2. The blade 2 is detachably connected to the main shaft 1 through the cooperation of the sliding block 21 and the sliding groove 11. The base plate 3 is installed on the bottom surface of the main shaft 1. The fixing assembly 4 is installed on the base plate 3 and contacts the blade 2. A support assembly 5 is installed on the blade 2, and one end of the support assembly 5 is connected to the fixing assembly 4.

[0020] like Figure 2 As shown, a stud 12 is provided on the bottom surface of the main shaft 1, one end of the stud 12 is connected to the main shaft 1, and the other end of the stud 12 passes through the base plate 3 and is placed on the other side of the base plate 3. A fixing nut 13 is provided on the stud 12, and a plurality of slide-out grooves 31 are provided on the base plate 3. The slide-out grooves 31 correspond one-to-one to the blades 2, and the fixing assembly 4 is installed in the slide-out groove 31.

[0021] like Figure 3 As shown, the support assembly 5 includes a limit frame 51 and a card plate 52. The cross-sectional shape of the limit frame 51 is U-shaped. The limit frame 51 includes a top plate 53 and a side plate 54. Two side plates 54 are provided and are respectively installed on both sides of the top plate 53. The top plate 53 is in contact with the top surface of the blade 2, and the side plate 54 is in contact with the side surface of the blade 2. One end of the side plate 54 passes through the slide-out groove 31 and is connected to the card plate 52. The card plate 52 is in contact with the bottom surface of the bottom plate 3.

[0022] A support plate 55 is provided on the side plate 54 on one side of the top plate 53. The cross-section of the support plate 55 is L-shaped. The support plate 55 includes a vertical plate 56 and a horizontal plate 57. The horizontal plate 57 is in contact with the top surface of the bottom plate 3. One end of the horizontal plate 57 is connected to one end of the side plate 54, and the other end of the horizontal plate 57 is connected to one end of the vertical plate 56. The other end of the vertical plate 56 is connected to the other end of the side plate 54.

[0023] like Figure 4As shown, there are several fixing components 4 and they correspond one to one with the blades 2. The fixing components 4 include a fastening plate 41 and an extrusion plate 42. The fastening plate 41 is placed on one side of the card plate 52. The fastening plate 41 is provided with a fastening screw 43. The fastening plate 41 is connected to the base plate 3 through the fastening screw 43. The extrusion plate 42 is installed on one side of the fastening plate 41 close to the card plate 52. The extrusion plate 42 is fitted with the card plate 52. A filling block 44 is installed on the side of the fastening plate 41 close to the base plate 3. The filling block 44 is placed in the slide-out groove 31 and matches the slide-out groove 31.

[0024] A connecting block 6 is provided in the slide-out groove 31, and the connecting block 6 matches the slide-out groove 31. One end of the connecting block 6 is in contact with the blade 2, and the other end of the connecting block 6 is in contact with the clamping plate 52. A connecting screw 45 is provided on the extrusion plate 42, and one end of the connecting screw 45 passes through the extrusion plate 42 and the clamping plate 52 and is threadedly connected to the connecting block 6.

[0025] During installation, push the blade 2 into the sliding groove 11 of the main shaft 1, and then fix the base plate 3 on the main shaft 1 through the fixing nut 13, and make the slide-out groove 31 correspond to the blade 2 one by one, and then push out the limit frame 51 along the slide-out groove 31, and fit the limit frame 51 with the blade 2. At the same time, the clamping plate 52 is fit with the base plate 3, and the limit frame 51 is fit with the blade 2 so that the support plate 55 is located on the side where the angle between the blade 2 and the base plate 3 is acute.

[0026] After the support assembly 5 and the blade 2 are installed, the filling block 44 of the fixing assembly 4 is squeezed into the slide-out slot 31, confining the blade in the slide slot 11 and connecting it to the main shaft 1. The fastening plate 41 is then fixed to the base plate 3 using the fastening screws 43. The connecting block 6 is then pushed into the slide-out slot 31 to limit the support assembly 5. The squeezing plate 42, the clamping plate 52, and the connecting block 6 are then connected together using the connecting screws 45, completing the confinement and fixation of the blade 2 and the support assembly 5.

[0027] When all blades 2 need to be removed, the base plate 3 can be removed from the main shaft 1. When the corresponding damaged blade 2 needs to be removed, the connecting screws 45 and the fastening screws 43 are removed, and then the fastening plate 41 and the connecting block 6 are removed to release the restriction and fixation of the blade 2. Then, the blade 2 and the support assembly 5 can be replaced along the sliding groove 11 and the sliding groove 31.

Claims

1. A water wheel blade fixing structure, characterized in that: The invention comprises a main shaft (1), blades (2), a bottom plate (3) and a fixed assembly (4), wherein the main shaft (1) is provided with a plurality of sliding grooves (11), the sliding grooves (11) are open at the bottom end of the main shaft (1), the blades (2) are provided with a plurality of sliding grooves (11) and correspond one to one with the sliding grooves (11), the blades (2) are provided with sliding blocks (21), the blades (2) are detachably connected to the main shaft (1) through the cooperation of the sliding blocks (21) and the sliding grooves (11), the bottom plate (3) is installed on the bottom surface of the main shaft (1), the fixed assembly (4) is installed on the bottom plate (3) and contacts the blades (2), the blades (2) are provided with a support assembly (5), and one end of the support assembly (5) is connected to the fixed assembly (4).

2. The water turbine blade fixing structure according to claim 1, characterized in that: A stud (12) is provided on the bottom surface of the main shaft (1), one end of the stud (12) is connected to the main shaft (1), and the other end of the stud (12) passes through the bottom plate (3) and is placed on the other side of the bottom plate (3). A fixing nut (13) is provided on the stud (12), and a plurality of slide-out slots (31) are provided on the bottom plate (3). The slide-out slots (31) correspond to the blades (2) one by one, and the fixing assembly (4) is installed in the slide-out slots (31).

3. The water turbine blade fixing structure according to claim 2, characterized in that: The support assembly (5) includes a limit frame (51) and a card plate (52). The cross-section of the limit frame (51) is U-shaped. The limit frame (51) includes a top plate (53) and a side plate (54). Two side plates (54) are provided and are respectively installed on both sides of the top plate (53). The top plate (53) is in contact with the top surface of the blade (2), and the side plate (54) is in contact with the side surface of the blade (2). One end of the side plate (54) passes through the slide-out groove (31) and is connected to the card plate (52). The card plate (52) is in contact with the bottom surface of the bottom plate (3).

4. The water wheel blade fixing structure according to claim 3, characterized in that: A support plate (55) is provided on the side plate (54) on one side of the top plate (53). The cross-section of the support plate (55) is L-shaped. The support plate (55) includes a vertical plate (56) and a horizontal plate (57). The horizontal plate (57) is in contact with the top surface of the bottom plate (3). One end of the horizontal plate (57) is connected to one end of the side plate (54), the other end of the horizontal plate (57) is connected to one end of the vertical plate (56), and the other end of the vertical plate (56) is connected to the other end of the side plate (54).

5. The water turbine blade fixing structure according to claim 3, characterized in that: The fixing components (4) are provided in a plurality and correspond one to one with the blades (2). The fixing components (4) include a fastening plate (41) and an extrusion plate (42). The fastening plate (41) is placed on one side of the card plate (52). The fastening plate (41) is provided with a fastening screw (43). The fastening plate (41) is connected to the base plate (3) via the fastening screw (43). The extrusion plate (42) is installed on a side of the fastening plate (41) close to the card plate (52). The extrusion plate (42) is fitted with the card plate (52). A filling block (44) is installed on a side of the fastening plate (41) close to the base plate (3). The filling block (44) is placed in the slide-out groove (31) and matches the slide-out groove (31).

6. The water turbine blade fixing structure according to claim 5, characterized in that: A connecting block (6) is provided in the slide-out groove (31), and the connecting block (6) matches the slide-out groove (31). One end of the connecting block (6) is in contact with the blade (2), and the other end of the connecting block (6) is in contact with the clamping plate (52). A connecting screw (45) is provided on the extrusion plate (42), and one end of the connecting screw (45) passes through the extrusion plate (42) and the clamping plate (52) and is threadedly connected to the connecting block (6).

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