Gear box for wind power generation

Abstract

The utility model discloses a gearbox for wind power generation, which comprises an upper box body and a lower box body, the upper box body is arranged on the lower box body, a shell is arranged in the upper box body and the lower box body, a gear bin is arranged in the shell, a gear ring is arranged in the gear bin, a first supporting column is rotatably arranged on one side of the gear bin, and a second supporting column is rotatably arranged on the other side of the gear bin. A first baffle is arranged on one side of the first supporting column, the first baffle is an equilateral triangle baffle, three first gears are rotationally installed on the first baffle, a second supporting column is rotationally arranged on the other side of the gear bin, and a second gear is arranged on one side of the second supporting column; the utility model relates to the technical field of wind power generation, the rotating speed of the high-speed shaft is changed by increasing the number of the sub-gear bins according to wind power in different regions, so that the rotating speed of the high-speed shaft reaches the rotating speed standard of a generator, and the application universality of the step-up gear box is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, in particular to a gear box for wind power generation. Background Art

[0002] The advantages of wind power generation are that it does not require fuel, does not occupy arable land, has no pollution, and has low operating costs. Because wind power generation has no fuel problems and does not produce radiation or air pollution, my country's wind energy resources are very rich. It is a clean and renewable energy source. The development prospects of the wind power industry are very broad. At present, the wind power in different regions is different. The speed increaser gearbox required for wind power generation equipment needs to match the local environment, which reduces the wide application of the speed increaser gearbox. At the same time, the gearbox works for a long time and the internal temperature of the gearbox is high, which accelerates the aging speed of the rubber pad between the planetary carrier and the sun gear shaft, affecting the elastic support effect between the planetary carrier and the sun gear shaft, thereby reducing the service life of the gearbox.

[0003] For example, the utility model patent with publication number CN201763527U discloses a wind power generation variable pitch gearbox, wherein the gearbox has a motor flange on which the motor shaft can be directly installed, and the gearbox has a three-stage planetary transmission mechanism, each stage of the planetary transmission mechanism has a sun gear, a planetary gear, a planetary shaft, and a planetary carrier, the input shaft of the gearbox and the first-stage sun gear are an integrated structure, the first-stage sun gear is arranged at the front end of the input shaft, the second-stage planetary gear and the third-stage planetary gear are meshed with the same internal gear and have the same gear parameters, and the device needs to prepare multiple types of gearboxes when installing speed increasing gearboxes for wind turbines in areas with different average wind speeds, thereby reducing the wide application of the gearbox, and at the same time, the gearbox works for a long time, and the internal temperature of the gearbox is high, which accelerates the aging speed of the rubber pad between the planet carrier and the sun gear shaft, affects the elastic support effect between the planet carrier and the sun gear shaft, and thereby reduces the service life of the gearbox. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a gearbox for wind power generation, which solves the problem that the existing gearboxes need to prepare multiple models of gearboxes when installing speed increasing gearboxes for wind turbines in areas with different average wind speeds, thereby reducing the wide application of the gearbox. At the same time, the gearbox works for a long time and the internal temperature of the gearbox is high, which accelerates the aging speed of the rubber pad between the planetary carrier and the sun gear shaft, affects the elastic support effect between the planetary carrier and the sun gear shaft, and thereby reduces the service life of the gearbox.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a gearbox for wind power generation, comprising an upper box body and a lower box body, the upper box body is arranged on the lower box body, the upper box body and the lower box body are provided with a shell, a gear bin is provided in the shell, a gear bin is provided in the gear bin, a gear ring is provided in the gear bin, a first support column is rotatably provided on one side of the gear bin, a first baffle is provided on one side of the first support column, the first baffle is an equilateral triangle baffle, three first gears are rotatably mounted on the first baffle, a second support column is rotatably provided on the other side of the gear bin, a second gear is provided on one side of the second support column, and the three first gears are respectively meshed with the gear ring and the second gear.

[0006] Preferably, a third support column is arranged on the other side of the first support column, a low-speed flange is arranged on the third support column, a first slot is arranged on the third support column, a first plug block is arranged on the first support column, and the low-speed flange is inserted into the first support column through the first slot.

[0007] Preferably, a fourth support column is provided on the other side of the second support column, a high-speed shaft is provided on the fourth support column, a second plug block is provided on the fourth support column, a second slot is provided on the second support column, and the high-speed shaft is inserted into the second support column through the second plug block.

[0008] Preferably, cooling pipes are provided in the upper box body and the lower box body, the cooling pipes are spirally provided on the outer shell, and a refrigerator is provided on the cooling pipes.

[0009] Preferably, a sub-gear bin is provided on the gear bin.

[0010] Beneficial Effects

[0011] The utility model provides a wind power generation gearbox, which has the following beneficial effects:

[0012] A third support column is arranged on the other side of the first support column of the present design, a low-speed flange is arranged on the third support column, a first slot is arranged on the third support column, a first plug-in block is arranged on the first support column, the low-speed flange is inserted into the first support column through the first slot, a fourth support column is arranged on the other side of the second support column, a high-speed shaft is arranged on the fourth support column, a second plug-in block is arranged on the fourth support column, a second slot is arranged on the second support column, the high-speed shaft is inserted into the second support column through the second plug-in block, and a sub-gear bin is arranged on the gear bin. The device adopts a plug-in method to install the low-speed flange and the high-speed shaft on the first gear and the second gear, which can increase the installation speed of the gearbox. At the same time, according to the wind force in different regions, the rotation speed of the high-speed shaft is changed by increasing the number of sub-gear bins, so that the rotation speed of the high-speed shaft reaches the rotation speed standard of the generator, thereby improving the wide application of the speed-increasing gearbox.

[0013] The upper box body and the lower box body of the present invention are provided with cooling pipes, which are spirally arranged on the outer shell. A refrigerator is arranged on the cooling pipes. The device can cool the gear box to avoid the high internal temperature of the gear box during long-term operation, which leads to an increased aging speed of the rubber pad between the planetary carrier and the sun gear shaft, thereby improving the elastic support effect between the baffle and the second gear, and thus increasing the service life of the gear box. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the gear bin of the present utility model.

[0015] Figure 2 It is a schematic diagram of the second gear of the present invention.

[0016] Figure 3 It is a schematic diagram of the third support column of the utility model.

[0017] Figure 4 It is a schematic diagram of the first supporting column of the utility model.

[0018] Figure 5 It is a schematic diagram of the second support column of the utility model.

[0019] Figure 6 It is a schematic diagram of the sub-gear bin of the utility model.

[0020] Figure 7 It is a schematic diagram of the fourth support column of the utility model.

[0021] Figure 8 It is a schematic diagram of the whole of the utility model.

[0022] Fig. 9 It is a schematic diagram of the cooling pipe of the utility model.

[0023] In the figure: 1. low-speed flange; 2. outer shell; 3. second support column; 4. gear compartment; 5. upper box; 6. high-speed shaft; 7. second gear; 8. first baffle; 9. first gear; 10. gear ring; 11. sub-gear compartment; 12. fourth support column; 13. first support column; 14. third support column; 15. first slot; 16. first plug-in block; 17. second slot; 18. second plug-in block; 19. lower box; 20. refrigerator; 21. cooling pipe. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-9 The utility model provides a technical solution: a gearbox for wind power generation, comprising an upper box body 5 and a lower box body 19, wherein the upper box body 5 is arranged on the lower box body 19, wherein the upper box body 5 and the lower box body 19 are provided with a shell 2, wherein a gear bin 4 is arranged in the shell 2, wherein a gear ring 10 is arranged in the gear bin 4, wherein a first support column 13 is rotatably arranged on one side of the gear bin 4, wherein a first baffle plate 8 is arranged on one side of the first support column 13, wherein the first baffle plate 8 is an equilateral triangle baffle plate, wherein three first gears 9 are rotatably mounted on the first baffle plate 8, wherein a second support column 3 is rotatably arranged on the other side of the gear bin 4, wherein a second gear 7 is arranged on one side of the second support column 3, wherein the three first gears 9 are respectively meshed with the gear ring 10 and the second gear 7;

[0026] The first baffle 8 is an equilateral triangle baffle, and the first gear 9 is rotatably arranged on the three corners of the first baffle 8. The distance from the vertex to the center of the equilateral triangle is equal. The first support column 13 rotates, driving the first baffle 8 to rotate, and then the first gear 9 rotates, and the direction is on the same axis as the first support column 13, driving the second gear 7 to rotate, and then the second support column 3 accelerates the rotation, and the speed increase ratio is I=1+the number of teeth of the ring gear / the number of teeth of the second gear.

[0027] This embodiment is further configured such that a third support column 14 is provided on the other side of the first support column 13, a low-speed flange 1 is provided on the third support column 14, a first slot 15 is provided on the third support column 14, a first plug block 16 is provided on the first support column 13, and the low-speed flange 1 is inserted into the first support column 13 through the first slot 15;

[0028] A pair of threaded holes are respectively provided on the square blocks on the first plug block 16, and a pair of through holes are respectively opened on the square slots of the first insertion slot 15. Bolts are passed through the through holes and screwed into the threaded holes to fix the first plug block 16, and then the low-speed flange 1 is fixed on the first support column 13;

[0029] The low-speed flange 1 is used to connect the fan main shaft.

[0030] This embodiment is further configured such that a fourth support column 12 is provided on the other side of the second support column 3, a high-speed shaft 6 is provided on the fourth support column 12, a second plug block 18 is provided on the fourth support column 12, a second slot 17 is provided on the second support column 3, and the high-speed shaft 6 is inserted into the second support column 3 through the second plug block 18;

[0031] A pair of threaded holes are respectively provided on the square blocks on the second plug block 18, and a pair of through holes are respectively opened on the square slots of the second insertion slot 17. Bolts are passed through the through holes and screwed into the threaded holes to fix the second plug block 18, and then the high-speed shaft 6 is fixed on the second support column 3;

[0032] The high-speed shaft 6 is used to connect a generator to convert mechanical energy into electrical energy.

[0033] This embodiment is further configured such that a cooling pipe 21 is provided in the upper box body 5 and the lower box body 19, the cooling pipe 21 is spirally provided on the housing 2, and a refrigerator 20 is provided on the cooling pipe 21;

[0034] The refrigerator 20 cools the coolant in the cooling pipe, which is a mature technology. Its cooling method is a common technical knowledge, so its structure is not described in detail.

[0035] The cooling pipe 21 is spirally arranged on the outer shell 2, which can increase the contact area between the cooling pipe 21 and the outer shell 2, improve the cooling efficiency, cool the gear box, and avoid the high internal temperature of the gear box due to long-term operation, which leads to an increased aging rate of the rubber pad between the planetary carrier and the sun gear shaft, thereby improving the elastic support effect between the baffle and the second gear, thereby increasing the service life of the gear box.

[0036] This embodiment is further configured such that a sub-gear bin 11 is provided on the gear bin 4;

[0037] The structure inside the sub-gear bin 11 is exactly the same as that of the gear bin 4. The sub-gear bin 11 is inserted into the second support column 3 on the gear bin 4 through the first plug block 16 on the first support column 13. According to the wind force in different regions, the rotation speed of the high-speed shaft 6 is changed by increasing the number of sub-gear bins 11, so that the rotation speed of the high-speed shaft 6 reaches the rotation speed standard of the generator, thereby improving the wide application of the speed-increasing gearbox.

[0038] Embodiment: When the gearbox is in use, the sub-gear bin 11 is inserted into the second support column 3 on the gear bin 4 through the first plug-in block 16 on the first support column 13. According to the wind force in different regions, the rotation speed of the high-speed shaft 6 is changed by increasing the number of sub-gear bins 11, so that the rotation speed of the high-speed shaft 6 reaches the rotation speed standard of the generator, thereby improving the wide application of the speed-increasing gearbox. A pair of threaded holes are respectively provided on the square blocks on the first plug-in block 16, and a pair of through holes are respectively opened on the square grooves of the first slots 15. Bolts are passed through the through holes and screwed into the threaded holes to fix the first plug-in block 16, and then the low-speed flange 1 is fixed to the first support column 13. A pair of threaded holes are respectively provided on the square blocks on the second plug-in block 18, and a pair of through holes are respectively opened on the square grooves of the second slots 17. Bolts are passed through the through holes and screwed into the threaded holes to fix the second plug-in block 18, and then the high-speed shaft 6 is fixed to the second support column 3. When wind power is used to generate electricity, the wind blows the fan blades to rotate, driving The main shaft of the fan rotates, causing the low-speed flange 1 to rotate, driving the first support column 13. The first baffle 8 is an equilateral triangle baffle. The first gear 9 is rotatably arranged on the three corners of the first baffle 8. The distance from the vertex to the center of the equilateral triangle is equal. The first support column 13 rotates, driving the first baffle 8 to rotate, thereby rotating the first gear 9, and the rotation axis of the first baffle 8 and the first support column 13 are on the same axis, driving the second gear 7 to rotate, accelerating the second support column 3, and thereby accelerating the acceleration shaft 6. The speed increase ratio is I=1+the number of teeth of the ring gear / the number of teeth of the second gear. The cooling pipe 21 is spirally arranged on the housing 2, which can increase the contact area between the cooling pipe 21 and the housing 2, improve the cooling efficiency, cool the gear box, and avoid the high internal temperature of the gear box working for a long time, which leads to an increase in the aging rate of the rubber pad between the planetary carrier and the sun gear shaft, thereby improving the elastic support effect between the baffle and the second gear, thereby improving the service life of the gear box.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gearbox for wind power generation, comprising an upper box body (5) and a lower box body (19), wherein the upper box body (5) is arranged on the lower box body (19), and characterized in that: The upper housing (5) and the lower housing (19) are provided with a housing (2), a gear chamber (4) is provided in the housing (2), a gear ring (10) is provided in the gear chamber (4), a first support column (13) is rotatably provided on one side of the gear chamber (4), a first baffle (8) is provided on one side of the first support column (13), the first baffle (8) is an equilateral triangle baffle, three first gears (9) are rotatably mounted on the first baffle (8), a second support column (3) is rotatably provided on the other side of the gear chamber (4), a second gear (7) is provided on one side of the second support column (3), the three first gears (9) are respectively meshed with the gear ring (10) and the second gear (7); a third support column (14) is provided on the other side of the first support column (13), a low-speed flange (1) is provided on the third support column (14), and the third support column (14) is provided with a plurality of gears (9) disposed on the third support column (14). A first slot (15) is provided on the support column (14), a first plug-in block (16) is provided on the first support column (13), and the low-speed flange (1) is inserted into the first support column (13) through the first slot (15); a fourth support column (12) is provided on the other side of the second support column (3), a high-speed shaft (6) is provided on the fourth support column (12), a second plug-in block (18) is provided on the fourth support column (12), a second slot (17) is provided on the second support column (3), and the high-speed shaft (6) is inserted into the second support column (3) through the second plug-in block (18); a cooling pipe (21) is provided in the upper box body (5) and the lower box body (19), the cooling pipe (21) is spirally provided on the outer shell (2), and a refrigerator (20) is provided on the cooling pipe (21); a sub-gear chamber (11) is provided on the gear chamber (4).

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