A gearbox for wind power

Abstract

The invention discloses a gear transmission for wind power, and relates to the technical field of wind power generation. It comprises a box body, one end of which is provided with an input shaft, and the other end of which is provided with an output shaft; a debris chute is obliquely provided at the bottom of the box body; a debris removal chamber is provided at one end of the box body provided with the input shaft; the debris chute is connected with the debris removal chamber; a rotating wheel is provided on the input shaft in the debris removal chamber, and a plurality of debris removal shovels are hingedly provided on the edge of the rotating wheel; a filter chamber is provided at the nine o'clock direction of the debris removal chamber; a pouring port is provided on the side wall of the debris removal chamber; the size of the pouring port is larger than the size of the debris removal shovel; the pouring port is connected with the filter chamber; a filter screen is provided in the filter chamber; a reflux channel is provided at the bottom of the filter chamber, and the reflux channel is connected with the debris removal chamber. The invention filters out metal iron chips in the lubricating oil by providing a debris chute, a debris removal chamber, a rotating wheel and a debris removal shovel, so as to reduce the friction between the metal iron chips and the gears in the gearbox, thereby reducing the loss of the gears in the gearbox and improving the service life of the gearbox.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and in particular to a gear transmission box for wind power generation. Background Art

[0002] Wind energy is the most common form of wind energy used by contemporary people. China is rich in wind energy resources and has a wide distribution of developable wind farms. As a clean energy source, wind power is also gaining more and more attention.

[0003] The energy generated by the rotation of the wind turbine rotor is transmitted to the generator through the main shaft, gearbox and high-speed shaft. The gearbox is an important mechanical component. Its main function is to transmit the power generated by the wind wheel under the action of wind to the generator and make it reach the corresponding speed. Usually, the speed of the wind wheel is very low, far from the speed required by the generator to generate electricity, and it must be achieved through the speed increase effect of the gearbox.

[0004] The gearbox is the main lubrication part of the wind turbine, and oil pool splash lubrication or pressure forced lubrication is mostly used. Splash lubrication is also called oil bath lubrication. The gearbox case is used as an oil tank, and the gears in the gearbox are immersed in the lubricating oil to a certain depth. The gears and their bearings are lubricated by the oil splashed when the gears rotate. However, when the gears mesh, they rub against each other and produce metal debris. These metal debris are mixed in the lubricating oil. When the lubricating oil lubricates the gears, they rub against the gear surface. Over time, scratches or even gaps appear on the gear surface, making it impossible for the gears to mesh well and thus fail to operate normally. In addition, since the wind turbines are placed at sea and in the air, it is more troublesome to change the oil and repair the speed gearbox. Summary of the invention

[0005] The main purpose of the present invention is to provide a gear box for wind power to solve the above problems.

[0006] To achieve the above-mentioned purpose, the present invention provides a gear transmission box for wind power, comprising a box body, wherein an input shaft is arranged at one end of the box body, and an output shaft is arranged at the other end; a debris chute is arranged obliquely at the bottom of the box body, the highest point of the debris chute is located at the end of the box body provided with the output shaft, and the lowest point of the debris chute is located at the end of the box body provided with the input shaft; a debris removal chamber is arranged at the end of the box body provided with the input shaft; the debris chute is communicated with the debris removal chamber; a rotating wheel is arranged on the input shaft in the debris removal chamber, and a plurality of debris removal shovels are hingedly arranged on the edge of the rotating wheel; the input shaft rotates clockwise; a filter chamber is arranged at the nine o'clock direction of the debris removal chamber; a dumping port is opened on the side wall of the debris removal chamber at the nine o'clock direction; the size of the dumping port is larger than the size of the debris removal shovel; the dumping port is communicated with the filter chamber; a filter screen is arranged in the filter chamber; the feed port of the filter screen is lower than the dumping port; a sealing cover is arranged at the top of the filter chamber; a reflux channel is arranged at the bottom of the filter chamber, and the reflux channel is communicated with the debris removal chamber.

[0007] Furthermore, the rotating wheel includes a fixed sleeve, which is keyed to the input shaft; wheel discs are provided at both ends of the fixed sleeve; multiple rotating shafts are provided between the two wheel discs, and the multiple rotating shafts are evenly distributed on the edges of the wheel discs; and a chip removal shovel is rotatably connected to each rotating shaft.

[0008] Furthermore, the chip removing shovel includes a shovel body, one end of the shovel body is open and the other end is closed; a lifting ear is provided at the closed end of the shovel body; a through hole is provided on the lifting ear, and the rotating shaft is passed through the through hole; when the chip removing shovel rotates to the bottom of the chip removing chamber, the open end of the shovel body contacts the bottom of the chip removing chamber, and the shovel body tilts.

[0009] Furthermore, the through hole is an oblong hole; when the chip removal shovel rotates to the bottom of the chip removal chamber, the rotating shaft is located at one end of the oblong hole close to the shovel body, the open end of the shovel body contacts the bottom of the chip removal chamber, and the shovel body is tilted.

[0010] Furthermore, the annular side wall of the chip removal chamber is arc-shaped, and the chip removal shovel is arc-shaped and matched with the annular side wall of the chip removal chamber.

[0011] The present invention has the following beneficial effects:

[0012] The present invention provides a debris slide to collect iron chips in a box body and send them to a chip removal chamber, and then send them to a filter chamber for filtration through a rotating wheel and a chip removal shovel in the chip removal chamber, so as to filter out metal iron chips in the lubricating oil, thereby reducing the friction between the metal iron chips and the gears in the gearbox, thereby reducing the loss of the gears in the gearbox and increasing the service life of the gearbox. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The figure is an overall schematic diagram of a gear transmission box for wind power according to the present invention.

[0014] Figure 2 The exploded view of the gear transmission box for wind power according to the present invention.

[0015] Figure 3 The present invention is a cross-sectional view of a filter chamber of a gear transmission box for wind power.

[0016] Among them, 1-box; 2-output shaft; 3-debris slide; 4-filter chamber; 5-sealing cover; 6-input shaft; 7-chip removal chamber; 8-rotor; 9-chip removal shovel; 10-filter screen; 41-pour port; 42-reflux channel; 81-fixing sleeve; 82-wheel; 83-rotating shaft; 91-shovel body; 92-lifting ear; 93-through hole. DETAILED DESCRIPTION

[0017] In order to achieve the above-mentioned purpose and effect, the technical means and structures adopted by the present invention are described in detail with reference to the accompanying drawings for the features and functions of the preferred embodiments of the present invention.

[0018] like Figure 1-3 As shown, the present invention provides a gear transmission for wind power, including a box body 1, one end of the box body 1 is provided with an input shaft 6, and the other end is provided with an output shaft 2; a debris chute 3 is obliquely provided at the bottom of the box body 1, the highest point of the debris chute 3 is located at the end of the box body 1 provided with the output shaft 2, and the lowest point of the debris chute 3 is located at the end of the box body 1 provided with the input shaft 6; a chip removal chamber 7 is provided at the end of the box body 1 provided with the input shaft 6; the chip chute 3 is communicated with the chip removal chamber 7; a runner 8 is provided on the input shaft 6 in the chip removal chamber 7, and the edge of the runner 8 is hinged A plurality of chip removal shovels 9 are provided; the input shaft 6 rotates clockwise; a filter chamber 4 is provided at the nine o'clock direction of the chip removal chamber 7; a pouring port 41 is provided on the side wall at the nine o'clock direction of the chip removal chamber 7; the size of the pouring port 41 is larger than the size of the chip removal shovel 9; the pouring port 41 is communicated with the filter chamber 4; a filter screen 10 is provided in the filter chamber 4; the feed port of the filter screen 10 is lower than the pouring port 41; a sealing cover 5 is provided on the top of the filter chamber 4; a reflux channel 42 is provided at the bottom of the filter chamber 4, and the reflux channel 42 is communicated with the chip removal chamber 7.

[0019] In another embodiment, the rotating wheel 8 includes a fixed sleeve 81, which is key-connected to the input shaft 6; both ends of the fixed sleeve 81 are provided with wheel discs 82; a plurality of rotating shafts 83 are provided between the two wheel discs 82, and the plurality of rotating shafts 83 are evenly distributed on the edges of the wheel discs 82; and a chip removal shovel 9 is rotatably connected to each rotating shaft 83.

[0020] In another embodiment, the chip removing shovel 9 includes a shovel body 91, one end of the shovel body 91 is open and the other end is closed; the closed end of the shovel body 91 is provided with a lifting ear 92; the lifting ear 92 is provided with a through hole 93, and the rotating shaft 83 is passed through the through hole 93; when the chip removing shovel 9 rotates to the bottom of the chip removing chamber 7, the opening end of the shovel body 91 contacts the bottom of the chip removing chamber 7, the shovel body 91 is tilted, and the opening of the shovel body 91 faces the rotation direction, so that the shovel body 91 can shovel the iron chips at the bottom of the chip removing chamber 7 into the shovel body 91.

[0021] In another embodiment, the through hole 93 is an oblong hole; when the chip removing shovel 9 rotates to the bottom of the chip removing chamber 7, the rotating shaft 83 is located at one end of the oblong hole close to the shovel body 91, the open end of the shovel body 91 contacts the bottom of the chip removing chamber 7, the shovel body 91 is tilted, and the opening of the shovel body 91 faces the direction of rotation, so that the shovel body 91 can shovel the iron chips at the bottom of the chip removing chamber 7 into the shovel body 91. When the chip removal shovel 9 rotates to the dumping port 41, the shovel body 91 gradually enters the dumping port 41, and the wheel 8 continues to rotate. When the shaft 83 gradually rises above the dumping port 41, under the action of gravity, the shovel body 91 will continue to slide down quickly into the dumping port 41, causing the iron filings in the shovel body 91 to accelerate. At this time, the shaft 83 slides from the end of the oblong hole close to the shovel body 91 to the end away from the shovel body 91; the wheel 8 continues to rotate, and then takes the shovel body 91 out of the dumping port 41. At this time, as the iron filings accelerate, they will separate from the shovel body 91 and enter the filter 10. When the filter 10 needs to be cleaned, since the sealing cover 5 is above the lubricating oil level, it is only necessary to disassemble the sealing cover 5 and take out the filter 10, which will not affect the normal operation of the gearbox.

[0022] In another embodiment, the annular side wall of the chip removal chamber 7 is arc-shaped, and the chip removal shovel 9 is arc-shaped and matched with the annular side wall of the chip removal chamber 7 .

[0023] The above descriptions are only preferred embodiments of the present invention, not all embodiments. Anyone should be aware that any structural changes made under the inspiration of the present invention, and any technical solutions that are the same or similar to the present invention, belong to the protection scope of the present invention.

Claims

1. A gearbox for wind power, characterized in that: It comprises a box body, one end of which is provided with an input shaft, and the other end is provided with an output shaft; a debris slide is obliquely provided at the bottom of the box body, the highest point of the debris slide is located at the end of the box body provided with the output shaft, and the lowest point of the debris slide is located at the end of the box body provided with the input shaft; a debris removal chamber is provided at the end of the box body provided with the input shaft; the debris slide is communicated with the debris removal chamber; a rotating wheel is provided on the input shaft in the debris removal chamber, and a plurality of debris removal shovels are hingedly provided on the edge of the rotating wheel; the input shaft rotates clockwise; a filter chamber is provided at the nine o'clock direction of the debris removal chamber; a dumping port is provided on the side wall of the debris removal chamber at the nine o'clock direction; the size of the dumping port is larger than the size of the debris removal shovel; the dumping port is communicated with the filter chamber; a A filter screen is provided; the feed port of the filter screen is lower than the pouring port; a sealing cover is provided on the top of the filter chamber; a reflux channel is provided at the bottom of the filter chamber, and the reflux channel is connected to the chip removal chamber; the rotary wheel includes a fixed sleeve, and the fixed sleeve is keyed to the input shaft; wheel discs are provided at both ends of the fixed sleeve; multiple rotating shafts are provided between the two wheel discs, and the multiple rotating shafts are evenly distributed on the edges of the wheel discs; a chip removal shovel is rotatably connected to each rotating shaft; the chip removal shovel includes a shovel body, one end of the shovel body is open and the other end is closed; a lifting ear is provided at the closed end of the shovel body; a through hole is provided on the lifting ear, and the rotating shaft is passed through the through hole; when the chip removal shovel rotates to the bottom of the chip removal chamber, the open end of the shovel body contacts the bottom of the chip removal chamber, and the shovel body tilts.

2. A gearbox for wind power as claimed in claim 1, characterized in that: The through hole is an oblong hole; when the chip removal shovel rotates to the bottom of the chip removal chamber, the rotating shaft is located at one end of the oblong hole close to the shovel body, the open end of the shovel body contacts the bottom of the chip removal chamber, and the shovel body is tilted.

3. A gearbox for wind power as claimed in any one of claims 1 to 2, characterized in that: The annular side wall of the chip removal chamber is arc-shaped, and the chip removal shovel is arc-shaped and matched with the annular side wall of the chip removal chamber.

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