A precision grinding device for output shaft of micro water current generator

Abstract

The application discloses a precision grinding device for an output shaft of a micro water current generator, which comprises an output shaft, and a base arranged at the bottom of the output shaft, characterized in that guiding and supporting assemblies are arranged at the top of the base and on both sides of the output shaft, an adjusting seat is arranged between the two guiding and supporting assemblies at the top of the base, cavities are arranged at the inside of both sides of the adjusting seat, adjusting mechanisms are arranged in the cavities, a driving assembly is connected to the power output end of one adjusting mechanism, a grinding assembly is connected to the power output end of the other adjusting mechanism, the driving assembly and the grinding assembly are both slidingly arranged on the adjusting seat and are arranged at the two sides of the output shaft respectively, a workpiece supporting plate is arranged at the top of the adjusting seat, and the output shaft is arranged on the workpiece supporting plate.

Description

Technical Field

[0001] This invention belongs to the field of micro hydro generator output shaft grinding technology, specifically relating to a precision grinding device for micro hydro generator output shaft. Background Technology

[0002] A miniature hydroelectric generator is a small device that generates electricity using the kinetic energy of water. It typically weighs between 1 and 3 kilograms, is foldable and portable, and is suitable for outdoor or remote use. Its core principle is to use water flow to drive a propeller or waterwheel, which in turn drives a miniature generator to produce electricity, eliminating the need for large dams. The output shaft of the miniature hydroelectric generator is the main power output device. The output shaft is usually a cylindrical metal shaft, with one end connected to the turbine wheel and the other end connected to the generator rotor via a coupling. The surface of the shaft is precision machined to ensure that it can stably transmit torque.

[0003] Currently, the grinding of the output shaft of a micro hydro generator mainly relies on traditional cylindrical grinding machines. Traditional grinding machines mostly use single-center positioning or three-jaw chuck clamping. When using single-center positioning, the center holes at both ends of the output shaft are prone to deformation, causing the shaft center to shift during grinding. Three-jaw chuck clamping can easily cause elastic deformation of shaft parts due to clamping force, resulting in excessive roundness error after grinding, which seriously affects assembly accuracy. Furthermore, the existing grinding equipment has low continuous processing efficiency and cannot meet the needs of production. Therefore, there is an urgent need for a precision grinding device for the output shaft of a micro hydro generator to solve the above problems. Summary of the Invention

[0004] In view of the problems mentioned in the background art above, the purpose of the present invention is to provide a precision grinding device for the output shaft of a miniature hydro generator.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows: A precision grinding device for the output shaft of a miniature hydro generator includes an output shaft with a base at its bottom. The device is characterized by: guide support assemblies mounted on both sides of the top of the base; the output shaft resting on both sides of the guide support assemblies; an adjustment seat mounted on the top of the base between the two guide support assemblies; cavities on both sides of the adjustment seat; and adjustment mechanisms installed within the cavities. One side of the adjustment mechanism has a power output end connected to a drive assembly, and the other side has a power output end connected to a grinding assembly. Both the drive assembly and the grinding assembly are slidably mounted on the adjustment seat and respectively positioned on both sides of the output shaft. A workpiece support plate is mounted on the top of the adjustment seat, and the output shaft is mounted on the workpiece support plate.

[0006] Further specifying, the guide support assembly includes a support base mounted on a base, support wheels on both sides of the top of the support base, a rotating shaft mounted at the center of the support wheels, and bearing seats mounted on both sides of the rotating shaft, with the bearing seats mounted on the support base. This structural design provides support and conveying for the output shaft.

[0007] Further specifying, the adjustment mechanism includes an adjustment motor installed within the cavity. The power output end of the adjustment motor is connected to a first bevel gear, which meshes with a second bevel gear. The second bevel gear is connected to a rotating rod, and bearings are installed at both ends of the rotating rod. The bearings are mounted on the side walls of the cavity. Transmission gears are installed on both sides of the rotating rod, and a rack seat is meshed with the bottom of each transmission gear. The rack seat is slidably disposed at the bottom of the cavity. A connecting column is installed on one side of the top of the rack seat, and the top of the connecting column penetrates the adjustment seat and is installed at the bottom of the drive assembly and the grinding assembly. This structural design allows the drive assembly and the grinding assembly to move and contact the output shaft for operation, respectively.

[0008] Further specifying, both the rack seat and the connecting column are slidably connected to guide rods, which are installed within the cavity. The adjusting seat has a guide groove at the corresponding through-hole of the connecting column, and the connecting column is slidably disposed within the guide groove. Folding covers are installed on both sides of the connecting column, and the other side of the folding cover is installed on the side wall of the guide groove. The top of the folding cover is triangular in shape. This structural design allows the rack seat and the connecting column to move along the guide rods. During the movement of the connecting column along the guide groove, it also causes the folding cover to stretch, providing a protective effect.

[0009] Further specifying, the drive assembly includes a first locking plate mounted on the top of the connecting columns on both sides, a first upright mounted on the top of the first locking plates on both sides, a first rotating roller mounted between the first uprights on both sides, a rubber sleeve mounted on the outer side of the first rotating roller, an assembly groove provided on one of the first uprights on one side, a drive motor mounted in the assembly groove, a transmission assembly connected to the power output end of the drive motor, and the other side of the transmission assembly connected to one side of the first rotating roller. This structural design can drive the output shaft to rotate.

[0010] Further specifying, the grinding assembly includes a second locking plate mounted on the top of the connecting columns on both sides, a second column mounted on the top of the second locking plates on both sides, a second rotating roller mounted between the second columns on both sides, a grinding roller mounted on the outer side of the second rotating roller, and a grinding motor mounted inside one of the second columns on one side, with the power output end of the grinding motor connected to one side of the second rotating roller. This structural design enables the grinding of the output shaft.

[0011] Further specifying, the base has a protective cover installed on the outside of the adjusting seat. The output shaft, adjusting mechanism, and drive assembly are all housed within the protective cover. A spray assembly is installed on the top inner side of the protective cover. The spray assembly includes a spray pipe installed on the top inner side of the protective cover. Several evenly arranged duckbill nozzles are installed at the output end of the spray pipe. The output ends of the duckbill nozzles are located on top of the output shaft. A delivery pipe is connected to the input end of the spray pipe, and a delivery pump is installed at the input end of the delivery pipe. A coolant chamber is provided within the base and filled with coolant. The delivery pump is installed within the coolant chamber. This structural design can cool the output shaft during grinding, preventing deformation due to high temperatures.

[0012] Furthermore, the adjusting seat has a flow guide channel between the cavities on both sides, and a transfer pipe is installed at the bottom of the flow guide channel. The output end of the transfer pipe is located in the coolant cavity of the base. The top of the adjusting seat has collection grooves on both sides of the workpiece support plate, and the output end of the collection grooves is connected to the input end of the flow guide channel. This structural design allows for the recovery of coolant.

[0013] Furthermore, filter screens are installed on both sides of the bottom of the workpiece support plate. These filter screens are installed within a collecting trough, which has a funnel-shaped structure that is wider at the top and narrower at the bottom. The bottom of the filter screens is positioned on both sides of the lower end of the collecting trough. This structural design allows for the filtration of the used coolant.

[0014] Further specifying, a fan is provided on one side of the top of the protective cover, and the output end of the fan is connected to a distribution box. Distribution ducts are provided on both sides of the distribution box, and both sides of the distribution ducts are installed inside the protective cover. An air diffuser is provided at the output end of each distribution duct, and the air diffuser is located on the side of the output shaft. Inside the protective cover, a partition plate is installed between the spray assembly and the distribution ducts. A U-shaped groove is provided on the lower side of the partition plate, and a thickened sponge pad is installed inside the U-shaped groove. This structural design allows for wiping and drying the surface of the ground output shaft.

[0015] The beneficial effects of this invention are as follows: 1. This invention utilizes a bottom support wheel for support and a side rubber sleeve for rotation. The high-speed precision grinding of the side grinding rollers ensures that the output shaft is free from rigid clamping force throughout the process, avoiding elastic deformation and ensuring the stability of the shaft center during grinding. This significantly reduces roundness error and ensures the dimensional accuracy of the output shaft. Furthermore, the output shaft does not require separate clamping and positioning. After the previous output shaft has been ground, the pre-placed output shaft can be directly pushed between the drive assembly and the grinding assembly to start processing. This greatly shortens the process interval time, solves the pain point of low efficiency in single-processing of traditional devices, and is suitable for the high-efficiency operation requirements of mass production scenarios.

[0016] 2. The spray assembly of the present invention forms a transverse water curtain through the duckbill nozzle, which is precisely sprayed onto the grinding area to quickly remove the heat generated by grinding and prevent the output shaft from deforming due to high temperature. At the same time, the coolant is filtered for impurities through the collection tank and filter screen, and then flows back to the coolant chamber for recycling through the guide channel and transfer pipe. This not only saves coolant resources, but also avoids damage to the delivery pump, rubber sleeve and grinding roller caused by the accumulation of impurities, reducing the cost of use and maintenance frequency. Moreover, after the output shaft is ground, the surface residual liquid can be wiped off and quickly dried in sequence to avoid surface corrosion or stains caused by coolant residue, thus improving product quality. Attached Figure Description

[0017] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings; Figure 1 This is a schematic diagram of the shaft side structure of a precision grinding device for the output shaft of a micro hydro generator according to an embodiment of the present invention; Figure 2 This is a cross-sectional structural schematic diagram of a precision grinding device for the output shaft of a micro hydro generator according to an embodiment of the present invention; Figure 3 This is a schematic cross-sectional view of the drive assembly of a precision grinding device for the output shaft of a micro hydro generator according to an embodiment of the present invention. Figure 4 This is a schematic cross-sectional view of the grinding component of a precision grinding device for the output shaft of a micro hydro generator according to an embodiment of the present invention. Figure 5 This is a cross-sectional schematic diagram of the adjustment mechanism of a precision grinding device for the output shaft of a micro hydro generator according to an embodiment of the present invention; Figure 6 This is a schematic cross-sectional view of the folded cover structure of a precision grinding device for the output shaft of a micro hydro generator according to an embodiment of the present invention; Figure 7 This is a schematic cross-sectional view of the shroud of a precision grinding device for the output shaft of a micro hydro generator according to an embodiment of the present invention. Figure 8 This is a schematic diagram of the guide support assembly structure of a precision grinding device for the output shaft of a micro hydro generator according to an embodiment of the present invention; The symbols for the main components are explained below: Output shaft 1, base 2, guide support assembly 3, adjusting seat 4, cavity 5, adjusting mechanism 6, drive assembly 7, grinding assembly 8, workpiece support plate 9, support seat 10, support wheel 11, rotating shaft 12, bearing seat 13, adjusting motor 14, first bevel gear 15, second bevel gear 16, rotating rod 17, transmission gear 19, rack seat 20, connecting column 21, guide rod 22, guide groove 23, folding cover 24, first locking plate 25, first column 26, first rotating roller 27, rubber sleeve 28, assembly 29. Slot 29, drive motor 30, transmission assembly 31, second locking plate 32, second column 33, second rotating roller 34, grinding roller 35, grinding motor 36, protective cover 37, spray assembly 38, spray pipe 39, duckbill nozzle 40, conveying pipe 41, conveying pump 42, coolant chamber 43, guide channel 44, transfer pipe 45, collection trough 46, filter screen 47, fan 48, diversion box 49, diversion duct 50, air expansion cover 51, partition plate 52, U-shaped trough 53, thickened sponge pad 54. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] Example 1, as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a precision grinding device for the output shaft of a micro hydro generator is provided. The bottom of the output shaft 1 is provided with a base 2. The device is characterized in that: guide support components 3 are installed on both sides of the top of the base 2, and the two sides of the output shaft 1 are placed on the guide support components 3. An adjustment seat 4 is installed on the top of the base 2 between the two guide support components 3. The adjustment seat 4 has cavities 5 on both sides inside, and an adjustment mechanism 6 is installed in the cavity 5. The power output end of one adjustment mechanism 6 is connected to a drive component 7, and the power output end of the other adjustment mechanism 6 is connected to a grinding component 8. The drive component 7 and the grinding component 8 are slidably arranged on the adjustment seat 4 and are respectively arranged on both sides of the output shaft 1. A workpiece support plate 9 is installed on the top of the adjustment seat 4, and the output shaft 1 is arranged on the workpiece support plate 9.

[0020] In this embodiment, when precision grinding the output shaft 1, the end of the output shaft 1 is first placed on the workpiece support plate 9, and the rear side of the output shaft 1 is placed on the guide support assembly 3. Then, the adjustment mechanisms 6 on both sides are activated, causing the adjustment mechanisms 6 on both sides to drive the drive assembly 7 and the grinding assembly 8 to move respectively. First, the drive assembly 7 contacts the side of the output shaft 1, and then the grinding assembly 8 contacts the other side of the output shaft 1. After that, the drive assembly 7 and the grinding assembly 8 are activated, causing the drive assembly 7 to rotate slowly and the grinding assembly 8 to rotate at high speed. All components 8 rotate in the same direction, causing the drive component 7 to drive the output shaft 1 to rotate. During the rotation, the output shaft 1 moves on the workpiece support plate 9 and the guide support component 3. Meanwhile, the high-speed rotating grinding component 8 on the other side grinds the output shaft 1. Since the output shaft 1 does not need to be clamped, it can be ground quickly as a whole. When the previous output shaft 1 is being ground, the next output shaft 1 can be placed behind the previous one. After the previous output shaft 1 is ground, it is pushed between the drive component 7 and the grinding component 8, thus achieving the effect of continuous grinding.

[0021] Example 2, as Figure 1 , Figure 2 and Figure 8 As shown, this embodiment adds the following structure based on embodiment 1: the guide support assembly 3 includes a support seat 10 mounted on the base 2, support wheels 11 are provided on both sides of the top of the support seat 10, a rotating shaft 12 is mounted at the center of the support wheel 11, and bearing seats 13 are mounted on both sides of the rotating shaft 12. The bearing seats 13 are mounted on the support seat 10.

[0022] In this embodiment, during use, the output shaft 1 is supported by the support wheels 11 on both sides of the bottom during rotation and movement. When the output shaft 1 rotates, the support wheels 11 can rotate synchronously with the output shaft 1, ensuring the stability of the rotation and movement of the output shaft 1.

[0023] Example 3, as Figure 5 and Figure 6 As shown, this embodiment adds the following structure based on embodiment 1: the adjustment mechanism 6 includes an adjustment motor 14 installed in the cavity 5, the power output end of the adjustment motor 14 is connected to a first bevel gear 15, the first bevel gear 15 is meshed with a second bevel gear 16, the second bevel gear 16 is connected to a rotating rod 17, bearings are installed at both ends of the rotating rod 17, the bearings are installed on the side wall of the cavity 5, transmission gears 19 are installed on both sides of the rotating rod 17, the bottom of the transmission gear 19 is meshed with a rack seat 20, the rack seat 20 is slidably disposed at the bottom of the cavity 5, a connecting column 21 is installed on one side of the top of the rack seat 20, the top of the connecting column 21 passes through the adjustment seat 4 and is installed at the bottom of the drive assembly 7 and the grinding assembly 8.

[0024] In this embodiment, during use, the motor 14 drives the first bevel gear 15 to rotate, the first bevel gear 15 drives the meshing second bevel gear 16 to rotate, the second bevel gear 16 drives the rotating rod 17 to rotate along the bearing, so that the rotating rod 17 drives the transmission gears 19 on both sides to rotate, the transmission gears 19 drive the meshing rack seat 20 to move, and the rack seat 20 drives the connecting column 21 when it moves, so that the connecting column 21 drives the drive assembly 7 and the grinding assembly 8 to move, so that the drive assembly 7 and the grinding assembly 8 can move to clamp the output shaft 1 of different sizes and grind it.

[0025] Example 4, as Figure 5 and Figure 6 As shown, this embodiment adds the following structure based on embodiment 3: the rack seat 20 and the connecting column 21 are both slidably connected to the guide rod 22, the guide rod 22 is installed in the cavity 5, the adjusting seat 4 is provided with the guide groove 23 at the corresponding through point of the connecting column 21, the connecting column 21 is slidably disposed in the guide groove 23, the two sides of the connecting column 21 are installed with the folding cover 24, the other side of the folding cover 24 is installed on the side wall of the guide groove 23, and the top of the folding cover 24 is set in a triangular structure.

[0026] In this embodiment, during the sliding process of the rack seat 20 and the connecting post 21, they will slide along the guide rod 22 to ensure the guiding nature of the movement of the rack seat 20 and the connecting post 21. At the same time, during the movement of the connecting post 21 along the guide groove 23, the connecting post 21 will squeeze the folding cover 24 on one side and stretch the folding cover 24 on the other side, so that the folding cover 24 can block the guide groove 23.

[0027] The top of the folding cover 24 is designed with a triangular structure. When the coolant is sprayed to cool the surface, the triangular structure can guide the coolant and prevent the coolant from accumulating on the folding cover 24.

[0028] Example 5, as Figure 3 As shown, this embodiment adds the following structure based on embodiment 1: the drive assembly 7 includes a first locking plate 25 installed on the top of the connecting columns 21 on both sides, a first column 26 installed on the top of the first locking plates 25 on both sides, a first rotating roller 27 installed between the first columns 26 on both sides, a rubber sleeve 28 installed on the outer side of the first rotating roller 27, an assembly groove 29 provided on one side of the first column 26, a drive motor 30 installed in the assembly groove 29, a transmission assembly 31 connected to the power output end of the drive motor 30, and the other side of the transmission assembly 31 connected to one side of the first rotating roller 27.

[0029] In this embodiment, when the rubber sleeve 28 contacts the output shaft 1, the drive motor 30 drives the transmission component 31, the transmission component 31 drives the first rotating roller 27, and the first rotating roller 27 drives the rubber sleeve 28 to rotate, so that the rubber sleeve 28 can drive the output shaft 1 to rotate, thereby performing mobile grinding.

[0030] The transmission assembly 31 consists of two transmission wheels and a transmission belt. The transmission wheels are driven by the drive motor 30, which in turn drives the transmission belt. The transmission belt then drives another transmission wheel connected to the first rotating roller 27 to rotate.

[0031] The maximum external dimension of the transmission wheel installed at the output end of the drive motor 30 is smaller than the maximum external dimension of the transmission wheel installed on one side of the first rotating roller 27, so that the rubber sleeve 28 drives the output shaft 1 to rotate slowly during operation.

[0032] Example 6, as Figure 4 As shown, this embodiment adds the following structure based on embodiment 1: the grinding assembly 8 includes a second locking plate 32 installed on the top of the connecting columns 21 on both sides, a second column 33 installed on the top of the second locking plates 32 on both sides, a second rotating roller 34 installed between the second columns 33 on both sides, a grinding roller 35 installed on the outer side of the second rotating roller 34, and a grinding motor 36 installed in one of the second columns 33 on one side, with the power output end of the grinding motor 36 connected to one side of the second rotating roller 34.

[0033] In this embodiment, during use, the grinding motor 36 drives the second rotating roller 34, which in turn drives the grinding roller 35 to rotate at high speed, thereby performing rapid grinding on the rotating output shaft 1.

[0034] In high-speed grinding, the linear speed of the grinding roller 35 is greatly increased, which makes the cutting thickness of a single abrasive grain thinner and the cutting action more precise. The enhanced micro-cutting action is conducive to obtaining more accurate dimensions and better surface quality, thus achieving the effect of precision grinding.

[0035] Example 7, as Figure 1 and Figure 5As shown, this embodiment adds the following structure based on embodiment 1: a protective cover 37 is installed on the outside of the base 2 and the adjusting seat 4. The output shaft 1, the adjusting mechanism 6 and the driving assembly 7 are all set inside the protective cover 37. A spray assembly 38 is installed on the top inner side of the protective cover 37. The spray assembly 38 includes a spray pipe 39 installed on the top inner side of the protective cover 37. Several evenly arranged duckbill nozzles 40 are installed at the output end of the spray pipe 39. The output end of the duckbill nozzles 40 is set on the top of the output shaft 1. A delivery pipe 41 is connected to the input end of the spray pipe 39. A delivery pump 42 is installed at the input end of the delivery pipe 41. A coolant chamber 43 is provided inside the base 2. The coolant chamber 43 is filled with coolant. The delivery pump 42 is installed inside the coolant chamber 43.

[0036] In this embodiment, during the grinding process, the coolant in the coolant chamber 43 is transported to the delivery pipe 41 by the delivery pump 42, and then into the spray pipe 39 by the delivery pipe 41. The coolant is then sprayed out by the duckbill nozzle 40 on the spray pipe 39, so that the coolant forms a horizontal water curtain that hits the output shaft 1 of the grinding process, thereby cooling the output shaft 1 and preventing the output shaft 1 from deforming due to high temperature.

[0037] Example 8, as Figure 5 As shown, this embodiment adds the following structure based on embodiment 1: the adjusting seat 4 is provided with a flow channel 44 between the two cavities 5, the bottom of the flow channel 44 is equipped with a transfer pipe 45, the output end of the transfer pipe 45 is set in the coolant cavity 43 of the base 2, and the top of the adjusting seat 4 is provided with a collection groove 46 on both sides of the workpiece support plate 9, the output end of the collection groove 46 is connected to the input end of the flow channel 44.

[0038] In this embodiment, the used coolant falls into the collection tank 46, is collected and transported to the guide channel 44, is guided to flow through the guide channel 44, and is input into the coolant chamber 43 through the transfer pipe 45, so that the coolant can be recycled.

[0039] Example 9, as Figure 5 As shown, this embodiment adds the following structure based on embodiment 8: filter screen plates 47 are installed on both sides of the bottom of the workpiece pallet 9. The filter screen plates 47 are installed in the collection groove 46. The collection groove 46 is arranged in a trumpet shape with a larger top and a smaller bottom. The bottom of the filter screen plates 47 is placed on both sides of the lower end of the collection groove 46.

[0040] In this embodiment, when the used coolant falls into the collection tank 46 and flows through the guide channel 44, the filter screen 47 will filter the impurities in the coolant, perform solid-liquid separation, and prevent impurities from entering the coolant chamber 43 and accumulating, thus affecting the operation of the delivery pump 42.

[0041] Example 10, as Figure 2 and Figure 7 As shown, this embodiment adds the following structure based on embodiment 1: a fan 48 is provided on one side of the top of the protective cover 37, the output end of the fan 48 is connected to a distribution box 49, and distribution ducts 50 are provided on both sides of the distribution box 49. Both sides of the distribution ducts 50 are installed inside the protective cover 37. An air diffuser 51 is provided at the output end of the distribution duct 50. The air diffuser 51 is located on the side of the output shaft 1. A partition plate 52 is installed inside the protective cover 37 between the spray assembly 38 and the distribution ducts 50. A U-shaped groove 53 is provided on the lower side of the partition plate 52, and a thickened sponge pad 54 is installed in the U-shaped groove 53.

[0042] In this embodiment, after the output shaft 1 is ground out, it first passes through the thickened sponge pad 54 in the U-shaped groove 53 to wipe the rotating output shaft 1. Then, the fan 48 generates flowing air, which is then diverted through the diversion box 49 and enters the diversion air ducts 50 on both sides. Finally, the air is blown out from the air diffuser 51 onto the output shaft 1 to perform a rapid air drying operation on the output shaft 1.

[0043] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A precision grinding device for the output shaft of a micro hydroelectric generator, comprising an output shaft (1), wherein a base (2) is provided at the bottom of the output shaft (1), characterized in that: Guide support components (3) are installed on both sides of the top of the base (2). The two sides of the output shaft (1) are placed on the guide support components (3). An adjustment seat (4) is installed between the two guide support components (3) on the top of the base (2). The two sides of the adjustment seat (4) are provided with cavities (5). An adjustment mechanism (6) is installed in the cavity (5). The power output end of the adjustment mechanism (6) on one side is connected to a drive component (7), and the power output end of the adjustment mechanism (6) on the other side is connected to a grinding component (8). The drive component (7) and the grinding component (8) are slidably arranged on the adjustment seat (4) and respectively arranged on both sides of the output shaft (1). A workpiece tray (9) is installed on the top of the adjustment seat (4), and the output shaft (1) is arranged on the workpiece tray (9).

2. The precision grinding device for the output shaft of a miniature hydroelectric generator according to claim 1, characterized in that: The guide support assembly (3) includes a support seat (10) mounted on a base (2). Support wheels (11) are provided on both sides of the top of the support seat (10). A rotating shaft (12) is mounted at the center of the support wheel (11). Bearing seats (13) are mounted on both sides of the rotating shaft (12). The bearing seats (13) are mounted on the support seat (10).

3. The precision grinding device for the output shaft of a miniature hydroelectric generator according to claim 2, characterized in that: The adjustment mechanism (6) includes an adjustment motor (14) installed in the cavity (5). The power output end of the adjustment motor (14) is connected to a first bevel gear (15). The first bevel gear (15) is meshed with a second bevel gear (16). The second bevel gear (16) is connected to a rotating rod (17). Bearings are installed at both ends of the rotating rod (17). The bearings are installed on the side wall of the cavity (5). Transmission gears (19) are installed on both sides of the rotating rod (17). The bottom of the transmission gears (19) is meshed with a rack seat (20). The rack seat (20) is slidably disposed at the bottom of the cavity (5). A connecting column (21) is installed on one side of the top of the rack seat (20). The top of the connecting column (21) passes through the adjustment seat (4) and is installed at the bottom of the drive assembly (7) and the grinding assembly (8).

4. The precision grinding device for the output shaft of a miniature hydroelectric generator according to claim 3, characterized in that: The rack seat (20) and the connecting column (21) are both slidably connected with guide rods (22). The guide rods (22) are installed in the cavity (5). The adjusting seat (4) is provided with a guide groove (23) at the corresponding connecting column (21) through point. The connecting column (21) is slidably disposed in the guide groove (23). Folding covers (24) are installed on both sides of the connecting column (21). The other side of the folding cover (24) is installed on the side wall of the guide groove (23). The top of the folding cover (24) is set in a triangular structure.

5. The precision grinding device for the output shaft of a miniature hydroelectric generator according to claim 4, characterized in that: The drive assembly (7) includes a first locking plate (25) installed on the top of the connecting columns (21) on both sides, a first column (26) installed on the top of the first locking plate (25) on both sides, a first rotating roller (27) installed between the first columns (26) on both sides, a rubber sleeve (28) installed on the outer side of the first rotating roller (27), an assembly groove (29) provided on one side of the first column (26), a drive motor (30) installed in the assembly groove (29), a transmission assembly (31) connected to the power output end of the drive motor (30), and the other side of the transmission assembly (31) connected to one side of the first rotating roller (27).

6. The precision grinding device for the output shaft of a miniature hydroelectric generator according to claim 5, characterized in that: The grinding assembly (8) includes a second locking plate (32) installed on the top of the connecting columns (21) on both sides, a second column (33) installed on the top of the second locking plate (32) on both sides, a second rotating roller (34) installed between the second columns (33) on both sides, a grinding roller (35) installed on the outside of the second rotating roller (34), and a grinding motor (36) installed inside one of the second columns (33), the power output end of the grinding motor (36) being connected to one side of the second rotating roller (34).

7. The precision grinding device for the output shaft of a miniature hydroelectric generator according to claim 6, characterized in that: The base (2) is equipped with a protective cover (37) on the outside of the adjusting seat (4). The output shaft (1), adjusting mechanism (6) and drive assembly (7) are all located inside the protective cover (37). A spray assembly (38) is installed on the top inner side of the protective cover (37). The spray assembly (38) includes a spray pipe (39) installed on the top inner side of the protective cover (37). A number of evenly arranged duckbill nozzles (40) are installed at the output end of the spray pipe (39). The output end of the duckbill nozzles (40) is located on the top of the output shaft (1). A delivery pipe (41) is connected to the input end of the spray pipe (39). A delivery pump (42) is installed at the input end of the delivery pipe (41). A coolant chamber (43) is provided inside the base (2). The coolant chamber (43) is filled with coolant. The delivery pump (42) is installed inside the coolant chamber (43).

8. The precision grinding device for the output shaft of a miniature hydroelectric generator according to claim 7, characterized in that: The adjusting seat (4) has a flow channel (44) between the cavities (5) on both sides. A transfer pipe (45) is installed at the bottom of the flow channel (44). The output end of the transfer pipe (45) is located in the coolant cavity (43) of the base (2). The top of the adjusting seat (4) has a collection groove (46) on both sides of the workpiece support plate (9). The output end of the collection groove (46) is connected to the input end of the flow channel (44).

9. The precision grinding device for the output shaft of a miniature hydroelectric generator according to claim 8, characterized in that: The bottom sides of the workpiece tray (9) are equipped with filter screens (47), which are installed in the collection groove (46). The collection groove (46) is arranged in a funnel shape with a larger top and a smaller bottom. The bottom of the filter screens (47) is placed on both sides of the lower end of the collection groove (46).

10. A precision grinding device for the output shaft of a miniature hydroelectric generator according to claim 9, characterized in that: A fan (48) is provided on one side of the top of the protective cover (37). The output end of the fan (48) is connected to a distribution box (49). A distribution duct (50) is provided on both sides of the distribution box (49). Both sides of the distribution duct (50) are installed inside the protective cover (37). An air diffuser (51) is provided at the output end of the distribution duct (50). The air diffuser (51) is located on the side of the output shaft (1). A partition plate (52) is installed between the spray assembly (38) and the distribution duct (50) inside the protective cover (37). A U-shaped groove (53) is provided on the lower side of the partition plate (52). A thickened sponge pad (54) is installed in the U-shaped groove (53).

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