CN216464387U - Wind power gear box capable of realizing maintenance on tower - Google Patents

Abstract

The utility model discloses a wind power gear box capable of realizing on-tower maintenance, and particularly relates to the field of wind power gear boxes. According to the wind power gear box capable of realizing maintenance on the tower, the shells of the primary box body, the secondary box body and the parallel box body are of a split structure, and the first mounting frame, the second mounting frame and the connecting piece are arranged.

Description

Wind power gear box capable of realizing maintenance on tower

Technical Field

The utility model relates to the field of wind power gear boxes, in particular to a wind power gear box capable of realizing maintenance on a tower.

Background

Wind power generation is a power generation mode of converting kinetic energy of wind into mechanical energy and then converting the mechanical energy into electric energy, and because wind is a renewable energy source, the wind power generation does not need any fuel and does not produce air pollution, so that the wind power generation is more and more emphasized. The wind power gear box is an important mechanical component in wind power generation, and mainly has the function of transmitting power generated by a wind wheel under the action of wind power to a generator and enabling the generator to obtain a corresponding rotating speed. The box body of the wind power gear box is large and generally comprises a front box body and a rear box body.

After the wind power gear box is used for a period of time, internal parts of the wind power gear box are prone to failure after being used for a long time, and therefore when the wind power gear box fails, the wind power gear box needs to be maintained and replaced.

Disclosure of Invention

The utility model mainly aims to provide a wind power gear box capable of realizing maintenance on a tower, which can effectively solve the problems in the background technology.

In order to achieve the purpose, the utility model adopts the technical scheme that:

a wind power gear box capable of realizing tower maintenance comprises a front box, and a primary box body, a secondary box body and a parallel box body which are sequentially and fixedly connected to the front end of the front box, wherein the primary box body consists of a primary lower cover and a primary upper cover, primary gear rings are arranged on the inner walls of the primary lower cover and the primary upper cover, a primary planet carrier is arranged in a cavity formed between the primary lower cover and the primary upper cover, the primary lower cover and the front box are fixedly connected and integrally formed, and sealing gaskets are arranged at the joint seams of the primary lower cover and the primary upper cover;

the secondary box body consists of a secondary lower cover and a secondary upper cover, secondary gear rings are arranged inside the secondary lower cover and the secondary upper cover, a secondary planet carrier is arranged in a cavity formed between the secondary lower cover and the secondary upper cover, and sealing gaskets are arranged at connecting seams of the secondary lower cover and the secondary upper cover;

the parallel-stage box body comprises a parallel-stage upper cover and a parallel-stage lower cover, a first mounting cavity and a second mounting cavity are jointly formed in the inner cavities of the parallel-stage upper cover and the parallel-stage lower cover, a driving rotating shaft is rotatably mounted in the first mounting cavity through a sealing bearing, a first parallel-stage gear is fixedly mounted on the outer surface of the driving rotating shaft, an output shaft is rotatably mounted in the second mounting cavity through a sealing bearing, a second parallel-stage gear is fixedly mounted on the outer surface of the output shaft, and the second parallel-stage gear is meshed with the first parallel-stage gear;

the round hole has been seted up jointly between one-level lower cover and one-level upper cover be close to a lateral wall axle center department and the front box of front box, aerogenerator's impeller shaft passes through the bearing and rotates to be connected in the round hole and be connected with the one-level planet carrier, the equal fixed mounting in upper end of one-level upper cover and parallel level lower cover has first mounting bracket and notes oil pipe, the upper end fixed mounting of second grade upper cover has the second mounting bracket, and equal common fixed mounting has the connecting piece before two first mounting brackets and the second mounting bracket.

Preferably, the first mounting bracket comprises a first portal frame, first inclined plates are symmetrically and fixedly mounted on the inner side of the vertical part of the first portal frame, two first connecting blocks are symmetrically and fixedly mounted at the lower end of the horizontal part of the first portal frame, and a first sliding hole coaxial with the wind power gear box is formed in the middle of each first connecting block.

Preferably, the second mounting bracket includes the second portal frame of fixed mounting on second grade upper cover surface upper portion, the vertical part middle part fixed mounting of second portal frame has the horizon bar, horizon bar lower extreme symmetry fixed mounting has two third connecting blocks, and every third connecting block middle part all seted up with wind-powered electricity generation gear box with the axial third slide opening, the horizontal part lower extreme symmetry fixed mounting of second portal frame has two second connecting blocks, and sets up the axial second slide opening with wind-powered electricity generation gear box in the middle part of every second connecting block, common fixed mounting has the second hang plate between the vertical part of horizon bar up end and second portal frame, common fixed mounting has the third hang plate between the vertical part inside wall lower part of second portal frame and the surface of second grade upper cover.

Preferably, the two third sliding holes are in one-to-one correspondence with the two first sliding holes on the parallel-stage lower cover, and the two second sliding holes are in one-to-one correspondence with the two first sliding holes on the one-stage upper cover.

Preferably, the connecting piece includes the baffle, the one end fixed mounting of baffle has the pull ring, the other end fixed mounting of baffle has two straight-bars that are parallel to each other, and two straight-bars keep away from the equal fixed mounting of one end of baffle and have a threaded rod, the surface threaded connection of threaded rod has the nut, two distance between the straight-bar equals with the distance between two first slide holes.

Preferably, the inner chamber lateral wall of one-level upper cover has two lugs about first parallel gear symmetry fixed mounting near one side lower part edge of preceding case, and the equal fixed mounting of every lug lower extreme has spacing post, the inner chamber lateral wall of one-level lower cover has two fixed blocks about first parallel gear symmetry fixed mounting near one side upper portion edge of preceding case, and every fixed block upper end middle part has all seted up the spacing groove.

Preferably, the equal fixed mounting in contact surface edge of one-level lower cover and one-level upper cover has the one-level mounting panel, the equal fixed mounting in contact surface edge of second grade lower cover and second grade upper cover has the second grade mounting panel, the equal fixed mounting in contact surface edge of one side of first installation cavity is kept away from to parallel level upper cover and parallel level lower cover has the parallel level mounting panel, the horizontal groove has been seted up to one side that the upper surface of parallel level lower cover is close to first installation cavity, the through-hole has been seted up to the diapire of horizontal groove, the mounting hole has been seted up to the position that parallel level upper cover upper end and through-hole correspond.

Preferably, one side of the one-level lower cover and one-level upper cover close to the second-level box body is fixedly provided with a first flange, two ends of the second-level upper cover and two-level lower cover are fixedly provided with a second flange and a third flange respectively, and one end of the parallel-level upper cover and one end of the parallel-level lower cover close to the second-level box body are fixedly provided with a fourth flange.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model discloses a wind power gear box capable of realizing tower maintenance, which is characterized in that shells of a primary box body, a secondary box body and a parallel box body are arranged into a split structure, and is provided with a first mounting frame, a second mounting frame and a connecting piece, when the wind power gear box has a fault and needs to be maintained or overhauled, workers only need to be conveyed to the wind power gear box, the nut is screwed off by adopting a tool, then the straight rod is pulled out to complete the separation of the two first mounting frames and the second mounting frame, then the bolts of the flange at the position where the fault occurs are sequentially screwed off, the first-stage upper cover, the second-stage upper cover and the parallel-stage lower cover can be respectively disassembled, so that the radial disassembly of the wind power gear box is realized, compared with the traditional maintenance technical means of the wind power gear box, the maintenance on the tower can be realized, the whole wind power gear box does not need to be disassembled, and the maintenance efficiency of the wind power gear box can be greatly improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic illustration of the position of the primary planet carrier and the secondary planet carrier of the present invention;

FIG. 3 is a schematic illustration of the position of the primary and secondary gear rings of the present invention;

FIG. 4 is a schematic view of the mounting positions of the first mounting bracket, the second mounting bracket and the connecting member of the present invention;

fig. 5 is a schematic view of the overall structure of the parallel-stage lower cover and the first mounting bracket of the present invention:

FIG. 6 is a schematic view of the overall structure of the secondary upper cover and the second mounting bracket of the present invention;

FIG. 7 is a schematic view showing the overall structure of the connector of the present invention;

fig. 8 is a schematic view of the overall structure of the primary upper cover of the present invention.

In the figure: 1. a front box; 2. a first-stage box body; 21. a first-level lower cover; 22. a primary upper cover; 23. a primary gear ring; 24. a fixed block; 25. a limiting groove; 26. a primary mounting plate; 27. a limiting column; 28. a bump; 29. a first flange; 3. a second-stage box body; 31. a second-stage lower cover; 32. a secondary upper cover; 33. a secondary gear ring; 34. a secondary mounting plate; 35. a second flange; 36. a third flange; 4. a parallel stage box body; 41. a parallel stage upper cover; 42. a parallel-stage lower cover; 43. a first mounting cavity; 44. a second mounting cavity; 46. a horizontal groove; 47. a parallel-stage mounting plate; 48. a through hole; 49. a fourth flange; 5. a primary planet carrier; 6. a secondary planet carrier; 7. a first mounting bracket; 71. a first gantry; 72. a first connection block; 73. a first slide hole; 74. a first inclined plate; 8. a second mounting bracket; 81. a second gantry; 82. a horizontal bar; 83. a second connecting block; 84. a second slide hole; 85. a second inclined plate; 86. a third inclined plate; 87. a third connecting block; 88. a third slide hole; 9. a connecting member; 91. a baffle plate; 92. a pull ring; 93. a straight rod; 94. a threaded rod; 95. a nut; 10. driving the rotating shaft; 11. a first parallel stage gear; 12. an output shaft; 13. a second parallel stage gear; 14. an oil filling pipe; 15. a circular hole.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-8, a wind power gear box capable of realizing tower maintenance comprises a front box 1, and a first-stage box body 2, a second-stage box body 3 and a parallel-stage box body 4 which are sequentially and fixedly connected with the front end of the front box 1;

specifically, the primary box body 2 consists of a primary lower cover 21 and a primary upper cover 22, primary gear rings 23 are arranged on the inner walls of the primary lower cover 21 and the primary upper cover 22, a primary planet carrier 5 is arranged in a cavity formed between the primary lower cover 21 and the primary upper cover 22, the primary lower cover 21 and the front box 1 are fixedly connected and integrally formed, and sealing gaskets are arranged at the connecting seams of the primary lower cover 21 and the primary upper cover 22; equal fixed mounting in the contact surface edge of one-level lower cover 21 and one-level upper cover 22 has one-level mounting panel 26, in practice, through the one-level mounting panel 26 coincidence with one-level lower cover 21 and one-level upper cover 22 edge to adopt the high strength bolt to carry out relatively fixed with one-level lower cover 21 and one-level upper cover 22, the completion is to the equipment of one-level lower cover 21 and one-level upper cover 22.

The secondary box body 3 consists of a secondary lower cover 31 and a secondary upper cover 32, secondary gear rings 33 are arranged inside the secondary lower cover 31 and the secondary upper cover 32, a secondary planet carrier 6 is arranged in a cavity formed between the secondary lower cover 31 and the secondary upper cover 32, and sealing gaskets are arranged at the joint seams of the secondary lower cover 31 and the secondary upper cover 32; the edges of the contact surfaces of the secondary lower cover 31 and the secondary upper cover 32 are fixedly provided with secondary mounting plates 34; in practice, the secondary upper cover 31 and the secondary upper cover 32 can be relatively fixed by intensively coinciding the secondary upper cover 32 with the secondary mounting plate 34 at the edge of the secondary upper cover 32 and adopting high-strength bolts, and then the assembly of the secondary upper cover 32 and the secondary lower cover 31 is completed.

The parallel stage box 4 comprises a parallel stage upper cover 41 and a parallel stage lower cover 42, a first mounting cavity 43 and a second mounting cavity 44 are jointly formed in the inner cavities of the parallel stage upper cover 41 and the parallel stage lower cover 42, a driving rotating shaft 10 is rotatably mounted in the first mounting cavity 43 through a sealing bearing, a first parallel stage gear 11 is fixedly mounted on the outer surface of the driving rotating shaft 10, an output shaft 12 is rotatably mounted in the second mounting cavity 44 through a sealing bearing, a second parallel stage gear 13 is fixedly mounted on the outer surface of the output shaft 12, and the second parallel stage gear 13 is meshed with the first parallel stage gear 11; that is, it can be seen that the second parallel gear 13 can be driven to rotate by the rotation of the first parallel gear 11, so that the output shaft 12 rotates, and the purpose of outputting torque is achieved.

It should be noted that, in the present invention, parallel-stage mounting plates 47 are fixedly mounted at the edges of the contact surfaces of the sides of the parallel-stage upper cover 41 and the parallel-stage lower cover 42 away from the first mounting cavity 43, a horizontal groove 46 is formed in one side of the upper surface of the parallel-stage lower cover 42 close to the first mounting cavity 43, a through hole 48 is formed in the bottom wall of the horizontal groove 46, and a mounting hole is formed in a position of the upper end of the parallel-stage upper cover 41 corresponding to the through hole 48.

In addition, in the utility model, a round hole 15 is jointly formed between a position, close to the axis of one side wall of the front box 1, of the first-stage lower cover 21 and the first-stage upper cover 22 and the front box 1, an impeller shaft of the wind driven generator is rotatably connected in the round hole 15 through a bearing and is connected with the first-stage planet carrier 5, the upper ends of the first-stage upper cover 22 and the parallel-stage lower cover 42 are fixedly provided with a first mounting frame 7 and an oil injection pipe 14, the oil injection pipes 14 are used for connecting a gear box lubricating system and are used for injecting lubricating oil into the gear box to ensure the lubricating degree of the gear box during working, the upper end of the second-stage upper cover 32 is fixedly provided with a second mounting frame 8, and a connecting piece 9 is jointly and fixedly arranged between the two first mounting frames 7 and the second mounting frame 8 and is used for fixing the first-stage box 2, the second-stage box 3 and the parallel-stage box 4.

Referring to fig. 5, the first mounting frame 7 includes a first portal frame 71, first inclined plates 74 are further symmetrically and fixedly mounted on the inner side of the vertical portion of the first portal frame 71, two first connecting blocks 72 are symmetrically and fixedly mounted at the lower end of the horizontal portion of the first portal frame 71, and a first sliding hole 73 coaxial with the wind power gearbox is formed in the middle of each first connecting block 72, wherein the connection mode between the first mounting frame 7 and the first-stage upper cover 22 is the same as the connection mode between the first mounting frame 7 and the parallel-stage lower cover 42, and the stability of connection between the first portal frame 71 and the first-stage upper cover 22 and the parallel-stage lower cover 42 can be ensured by using the first inclined plates 74, so that the overall strength of the whole first mounting frame 7 is improved.

As shown in fig. 6, the second mounting bracket 8 includes a second portal frame 81 fixedly mounted on the upper portion of the outer surface of the second-stage upper cover 32, a horizontal rod 82 is fixedly mounted in the middle of a vertical portion of the second portal frame 81, two third connecting blocks 87 are symmetrically and fixedly mounted at the lower end of the horizontal rod 82, a third sliding hole 88 coaxial with the wind power gear box is formed in the middle of each third connecting block 87, two second connecting blocks 83 are symmetrically and fixedly mounted at the lower end of the horizontal portion of the second portal frame 81, a second sliding hole 84 coaxial with the wind power gear box is formed in the middle of each second connecting block 83, a second inclined plate 85 is fixedly mounted between the upper end surface of the horizontal rod 82 and the vertical portion of the second portal frame 81, and a third inclined plate 86 is fixedly mounted between the lower portion of the inner side wall of the vertical portion of the second portal frame 81 and the outer surface of the second-stage upper cover 32; by providing the second inclined plate 85 and the third inclined plate 86, the connection strength between the second portal frame 81 and the second-stage upper cover 32 and the overall strength of the entire second portal frame 81 can be improved to some extent.

As shown in fig. 7, the connecting member 9 includes a baffle plate 91, one end of the baffle plate 91 is fixedly provided with a pull ring 92, the other end of the baffle plate 91 is fixedly provided with two straight rods 93 parallel to each other, one ends of the two straight rods 93 far away from the baffle plate 91 are fixedly provided with a threaded rod 94, the outer surface of the threaded rod 94 is in threaded connection with a nut 95, and the distance between the two straight rods 93 is equal to the distance between the two first sliding holes 73.

With reference to the above and fig. 5-7, it should be noted that, the two third sliding holes 88 are identical in height to and correspond to the two first sliding holes 73 on the parallel-stage lower cover 42 one by one, and the two second sliding holes 84 are identical in height to and correspond to the two first sliding holes 73 on the one-stage upper cover 22 one by one, so that in practice, the two first mounting frames 7 and the second mounting frames 8 can be fixed relatively by inserting the straight rods 93 into the two first sliding holes 73 and the corresponding third sliding holes 88 or second sliding holes 84, and further the first-stage upper cover 22, the second-stage upper cover 32 and the parallel-stage lower cover 42 can be fixed relatively, so as to ensure the overall connection strength of the whole gear box housing, and by providing the first mounting frame 7, the second mounting frame 8 and the connecting piece 9, when the wind power gear box needs to be disassembled radially, the nuts 95 are only screwed down, the straight rod 93 is pulled out, so that the operation is simple and convenient, and the working efficiency is high.

As shown in fig. 3 and 8, in the present invention, two protruding blocks 28 are symmetrically and fixedly installed on the edge of the lower portion of one side of the inner cavity side wall of the first-stage upper cover 22 close to the front box 1, with respect to the first parallel-stage gear 11, and a limiting column 27 is fixedly installed at the lower end of each protruding block 28, two fixing blocks 24 are symmetrically and fixedly installed on the edge of the upper portion of one side of the inner cavity side wall of the first-stage lower cover 21 close to the front box 1, with respect to the first parallel-stage gear 11, and a limiting groove 25 is formed in the middle of the upper end of each fixing block 24, so that the first-stage upper cover 22 and the first-stage lower cover 21 can be limited and fixed by the cooperation of the fixing blocks 24 and the limiting groove 25, and the connection stability and reliability of the first-stage upper cover 22 and the first-stage lower cover 21 are further improved.

In addition, in the present invention, a first flange 29 is fixedly installed on both sides of the first-stage lower cover 21 and the first-stage upper cover 22 close to the second-stage box 3, a second flange 35 and a third flange 36 are fixedly installed on both ends of the second-stage upper cover 32 and the second-stage lower cover 31, respectively, and a fourth flange 49 is fixedly installed on one ends of the parallel-stage upper cover 41 and the parallel-stage lower cover 42 close to the second-stage box 3; the size of the third flange 36 is matched with that of the fourth flange 49, the size of the second flange 35 is matched with that of the first flange 29, and it can be seen that the fixation can be completed by adopting a flange connection mode between the first-stage lower cover 21 and the second-stage lower cover 31, between the second-stage lower cover 31 and the parallel-stage upper cover 41, between the second-stage upper cover 32 and the parallel-stage lower cover 42 and between the first-stage upper cover 22 and the second-stage upper cover 32.

In summary, the utility model provides a wind power gear box capable of realizing maintenance on a tower, when the wind power gear box works, lubricating oil is injected into the gear box through an oil injection pipe 14 and is connected with a gear box lubricating system to ensure the lubricating degree of the gear box when the gear box works, an impeller shaft of a wind power generator is rotatably connected in a round hole 15 through a bearing and is connected with a primary planet carrier 5 to drive the primary planet carrier 5 to rotate, then 3 primary planet gears are arranged on the primary planet carrier 5, a primary gear ring 23 is fixed, so that a primary sun gear is used as an output, a spline is arranged on the other side of the primary sun gear and is connected with a secondary planet carrier 6, similarly, 3 secondary planet gears are arranged on the secondary planet carrier 6, a secondary gear ring 33 is fixed, a secondary sun gear is used as an output, a spline is arranged on the other side of the secondary sun gear and is connected with a first parallel gear 11, the last stage is a second parallel gear 13, and the first parallel gear 11 drives the second parallel gear 13 to rotate, the second parallel gear 13 drives the output shaft 12 to rotate, and the output shaft 12 is connected with a generator to achieve the purpose of wind power generation;

when the internal structure of the wind power gear box breaks down and needs to be maintained or parts are replaced: at first, judge the position that breaks down, then through carrying wind-powered electricity generation gear box department with the staff, adopt the instrument to unscrew nut 95, then take straight-bar 93 out, accomplish the separation of two first mounting brackets 7 and second mounting bracket 8, then unscrew the bolt of the flange that breaks down in proper order, can dismantle one-level upper cover 22, second grade upper cover 32 and parallel level lower cover 42 respectively, realize dismantling the warp direction of wind-powered electricity generation gear box, can increase substantially the maintenance efficiency to wind-powered electricity generation gear box.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (8)

1. The utility model provides a can realize wind-powered electricity generation gear box of maintaining on tower, includes front box (1) and one-level box (2), second grade box (3) and parallel level box (4) of fixed connection in proper order in front box (1) front end, its characterized in that:

the primary box body (2) is composed of a primary lower cover (21) and a primary upper cover (22), primary gear rings (23) are arranged on the inner walls of the primary lower cover (21) and the primary upper cover (22), a primary planet carrier (5) is arranged in a cavity formed between the primary lower cover (21) and the primary upper cover (22), the primary lower cover (21) is fixedly connected with the front box (1) and is integrally formed, and sealing gaskets are arranged at the joint seams of the primary lower cover (21) and the primary upper cover (22);

the secondary box body (3) consists of a secondary lower cover (31) and a secondary upper cover (32), secondary gear rings (33) are arranged inside the secondary lower cover (31) and the secondary upper cover (32), a secondary planet carrier (6) is arranged in a cavity formed between the secondary lower cover (31) and the secondary upper cover (32), and sealing gaskets are arranged at connecting seams of the secondary lower cover (31) and the secondary upper cover (32);

the parallel stage box body (4) comprises a parallel stage upper cover (41) and a parallel stage lower cover (42), the inner cavities of the parallel stage upper cover (41) and the parallel stage lower cover (42) are both provided with a first installation cavity (43) and a second installation cavity (44), a driving rotating shaft (10) is rotatably installed in the first installation cavity (43) through a sealing bearing, a first parallel stage gear (11) is fixedly installed on the outer surface of the driving rotating shaft (10), an output shaft (12) is rotatably installed in the second installation cavity (44) through a sealing bearing, a second parallel stage gear (13) is fixedly installed on the outer surface of the output shaft (12), and the second parallel stage gear (13) is meshed with the first parallel stage gear (11);

round hole (15) have been seted up jointly between one-level lower cover (21) and one-level upper cover (22) a lateral wall axle center department that is close to preceding case (1) and preceding case (1), aerogenerator's impeller shaft passes through the bearing and rotates to be connected in round hole (15) and be connected with one-level planet carrier (5), the equal fixed mounting in upper end of one-level upper cover (22) and parallel level lower cover (42) has first mounting bracket (7) and notes oil pipe (14), the upper end fixed mounting of second grade upper cover (32) has second mounting bracket (8), and equal common fixed mounting has connecting piece (9) before two first mounting brackets (7) and second mounting bracket (8).

2. The wind power gearbox capable of achieving on-tower maintenance according to claim 1, is characterized in that: first mounting bracket (7) include first portal frame (71), the vertical part inboard of first portal frame (71) still symmetry fixed mounting have first hang plate (74), the horizontal part lower extreme symmetry fixed mounting of first portal frame (71) has two first connecting blocks (72), and all offers first slide opening (73) with the same axial of wind-powered electricity generation gear box in every first connecting block (72) middle part.

3. The wind power gearbox capable of achieving on-tower maintenance according to claim 2, wherein: second mounting bracket (8) include second portal frame (81) fixed mounting on second grade upper cover (32) surface upper portion, vertical part middle part fixed mounting of second portal frame (81) has horizon bar (82), horizon bar (82) lower extreme symmetry fixed mounting has two third connecting blocks (87), and every third connecting block (87) middle part all seted up with wind-powered electricity generation gear box coaxial third slide opening (88), the horizontal part lower extreme symmetry fixed mounting of second portal frame (81) has two second connecting blocks (83), and every second connecting block (83) middle part seted up with wind-powered electricity generation gear box coaxial second slide opening (84), common fixed mounting has second hang plate (85) between the vertical part of horizon bar (82) up end and second portal frame (81), common fixed mounting has the third board between the vertical part inside wall lower part of second portal frame (81) and the surface of second grade upper cover (32), common fixed mounting has the third board between the vertical part inside wall lower part of second portal frame (81) and the second grade upper cover (32) (86).

4. The wind power gearbox capable of achieving on-tower maintenance according to claim 3, wherein: the two third sliding holes (88) are consistent in height with the two first sliding holes (73) on the parallel-level lower cover (42) and are in one-to-one correspondence, and the two second sliding holes (84) are consistent in height with the two first sliding holes (73) on the one-level upper cover (22) and are in one-to-one correspondence.

5. The wind power gearbox capable of achieving on-tower maintenance according to claim 2, wherein: connecting piece (9) are including baffle (91), the one end fixed mounting of baffle (91) has pull ring (92), the other end fixed mounting of baffle (91) has two straight-bars (93) that are parallel to each other, and two straight-bars (93) keep away from the equal fixed mounting of one end of baffle (91) and have threaded rod (94), the surface threaded connection of threaded rod (94) has nut (95), two distance between straight-bar (93) and the distance between two first slide holes (73) equal.

6. The wind power gearbox capable of achieving on-tower maintenance according to claim 1, is characterized in that: inner chamber lateral wall of one-level upper cover (22) is close to one side lower part edge of preceding case (1) and has two lugs (28) about first parallel gear (11) symmetry fixed mounting, and the equal fixed mounting of every lug (28) lower extreme has spacing post (27), inner chamber lateral wall of one-level lower cover (21) is close to one side upper portion edge of preceding case (1) and has two fixed blocks (24) about first parallel gear (11) symmetry fixed mounting, and spacing groove (25) have all been seted up at every fixed block (24) upper end middle part.

7. The wind power gearbox capable of achieving on-tower maintenance according to claim 1, is characterized in that: equal fixed mounting in the contact surface edge of one-level lower cover (21) and one-level upper cover (22) has one-level mounting panel (26), the equal fixed mounting in the contact surface edge of second grade lower cover (31) and second grade upper cover (32) has second grade mounting panel (34), the equal fixed mounting in contact surface edge of one side of first installation cavity (43) has parallel level mounting panel (47) is kept away from to parallel level upper cover (41) and parallel level lower cover (42), horizontal groove (46) have been seted up to one side that the upper surface of parallel level lower cover (42) is close to first installation cavity (43), through-hole (48) have been seted up to the diapire of horizontal groove (46), the mounting hole has been seted up to the position that parallel level upper cover (41) upper end and through-hole (48) correspond.

8. The wind power gearbox capable of achieving on-tower maintenance according to claim 1, is characterized in that: one side equal fixed mounting that one-level lower cover (21) and one-level upper cover (22) are close to second grade box (3) has first flange (29), the both ends of second grade upper cover (32) and second grade lower cover (31) are fixed mounting respectively has second flange (35) and third flange (36), the one end fixed mounting that parallel level upper cover (41) and parallel level lower cover (42) are close to second grade box (3) has fourth flange (49).

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