CN115676609A - Maintenance crane for wind power generating set - Google Patents

Abstract

The invention relates to the technical field of maintenance auxiliary equipment for generating sets, in particular to a maintenance crane for wind power generating sets. A maintenance crane for wind power generators, including a first support mechanism, a second support mechanism, a fixing mechanism, and a lifting mechanism, which effectively solves the problem that most of the existing lifting tools are hoisted by electric hoists and have poor stability and are likely to cause greater danger To solve the problem, the structure design of the present invention is reasonable, and the structure is flexible in use, strong in practicability, easy to move, and easy to use, and effectively improves the stability of the hoisting support of the generator set, and effectively increases the safety of use.

Description

Maintenance crane for wind power generating set

technical field

The invention relates to the technical field of maintenance auxiliary equipment for generating sets, in particular to a maintenance crane for wind power generating sets.

Background technique

Wind turbines are widely used, involving many fields, and often need to be repaired in the actual application process. The current wind turbine maintenance generally requires maintenance personnel to climb or drill into the lower and upper ends of the equipment for maintenance, but in the maintenance When working, its maintenance personnel are neither convenient for repair nor safe. Most of the existing ordinary hoisting tools are fixed and inconvenient to move, so the generator set needs to be transported to the designated place for maintenance, and most of the existing hoisting tools are Hoisting by electric hoist has poor stability and is likely to cause greater danger. Therefore, we provide a wind turbine maintenance crane to solve this problem.

Contents of the invention

The purpose of the present invention is to solve the shortcomings in the prior art, and propose a maintenance crane for wind power generators, which has a reasonable structural design, flexible structure, strong practicability, convenient movement and use, and effectively improves the power generation. The hoisting support of the unit is stable and effectively increases the safety of use.

In order to achieve the above object, the present invention adopts the following technical solutions:

Design a maintenance crane for wind power generators, including a first support mechanism, a second support mechanism, a fixing mechanism, and a lifting mechanism. The first support mechanism includes two first bottom plates, and the outer sides of the first bottom plates are symmetrically arranged. There are moving wheels, the upper ends of the two first bottom plates are jointly connected with the first top plate through the first support column, the lower end of the first top plate is symmetrically connected with the second support column, and the outer lower part of the second support column They are all connected to the first support column through inclined support rods, and the inner sides of the two first bottom plates are provided with a second support mechanism, and the second support mechanism includes two second bottom plates in contact with the first bottom plate, The corresponding sides of the two second bottom plates are jointly connected with two beams, and the upper ends of the second bottom plates are symmetrically connected with first fixing rings, and the first fixing rings are connected with fixing rings through first steel ropes. In the kit, the upper end of the first bottom plate is provided with a fixing mechanism, and the lower end of the first top plate is provided with a lifting mechanism.

Preferably, the lifting mechanism includes an L-shaped support rod connected to the first top plate, a second motor is installed on the upper end of the L-shaped support rod, and a belt is sleeved on the outside of the second motor through the main pulley, The side of the belt away from the main pulley is connected with a rotating shaft through the secondary pulley, the rotating shaft runs through the first top plate and extends to the inner cavity to connect with bearings, the upper end of the first top plate is symmetrically provided with notches, and the outer side of the rotating shaft Matching winding wheels are arranged symmetrically, and the winding wheels are all connected with a second fixing ring through a second steel rope, and a locking mechanism is arranged under the second fixing ring.

Preferably, the locking mechanism includes two fixing plates connected to the second fixing ring, the upper ends of the fixing plates are screwed to the second fixing ring through thread grooves, and the lower ends of the fixing plates are provided with The supporting plate, the lower end of the supporting plate is connected with the third fixed cover through the mounting plate, and the lower end of the third fixed cover is provided with a hook.

Preferably, the upper ends of the second base plates are symmetrically connected with first fixed covers, the upper ends of the inner chambers of the first fixed covers are equipped with first hydraulic cylinders, and the lower ends of the first hydraulic cylinders are connected with first As for the hydraulic rods, the upper ends of the second bottom plate are symmetrically provided with first through grooves matched therewith, and the first hydraulic rods are connected to support blocks through the first through grooves.

Preferably, the fixing mechanism includes two second fixing covers connected to the first bottom plate, first motors are installed at the bottom ends of the inner chambers of the second fixing covers, and the outer sides of the first motors are provided with There is a first bevel gear, and the upper end of the inner cavity of the second fixed cover is provided with a second bevel gear through the mounting seat, and the second bevel gear is meshed with the first bevel gear, and the second support column The lower ends are all provided with first grooves, the inner cavities of the first grooves are provided with stoppers, the lower ends of the stoppers are connected with screw rods, and the lower ends of the second support columns are provided with corresponding Matching baffles, the screw rods all pass through the second fixed cover and extend to the inner cavity to connect with the second bevel gear, and the lower ends of the screw rods are connected with spiral ground piles, and the upper end of the first bottom plate Both are provided with matching second through grooves.

Preferably, the upper end of the fixing plate is symmetrically provided with second grooves, the inner cavities of the second grooves are connected with spring rods, and the outer sides of the spring rods are provided with reinforcing ribs, and the reinforcing ribs are far away from the spring One side of the rod is connected with the second fixed ring, the upper end of the fixed plate is symmetrically screwed with the second top plate through bolts, and the upper end of the second top plate is screwed with a solid plate through bolts, and the first The lower ends of the two top plates are symmetrically connected with first buffer strips, and the lower ends of the fixing plates pass through the supporting plate equidistantly through the first reinforcing column and extend to the bottom to be screwed with nuts.

Preferably, the outer sides of the support plates are equidistantly connected with connecting rods, and the connecting rods are all connected with fixed sleeves through connecting blocks, and the outer sides of the first supporting columns are symmetrically provided with matching slide grooves. The inner side of the fixed sleeve is symmetrically provided with slide blocks matching the position of the chute.

Preferably, the upper ends of the mounting plates are connected with second reinforcement columns, the upper ends of the second reinforcement columns pass through the support plate and extend to connect with the third top plate, the lower ends of the third top plate are equally spaced on both sides The shock absorber is connected, and the inner cavity of the support plate is equidistantly provided with matching reinforcing plates, and the upper ends of the reinforcing plates are provided with second buffer strips.

Preferably, both sides of the inner cavity of the third fixed cover are equipped with second hydraulic cylinders, and the second hydraulic cylinders are connected with arc-shaped racks through the second hydraulic rods, and the upper ends of the hooks are connected through the connecting shafts. There are matching gears attached.

A kind of wind power generating unit maintenance crane that the present invention proposes, beneficial effect is:

One: The first supporting mechanism is equipped with two first bottom plates and moving wheels, which facilitate the movement of the hoisting equipment and effectively improve its practicability.

Two: The second support mechanism is equipped with four first fixing rings, first steel ropes, and fixing sets, so that the first steel ropes on the upper end of the second base plate and the fixing sets are connected with each other by intersecting with the hook, effectively increasing the power of the generator set. The stable binding effect, and the first fixed cover is provided on the top of the second bottom plate, and the first hydraulic cylinder is installed in the inner cavity, and the first hydraulic cylinder drives the support block to support on the ground through the first hydraulic rod, effectively improving the crossbeam And the supporting effect of the generator set, and prevent it from shaking, which is convenient to improve the safety guarantee of maintenance personnel during maintenance.

Three: The fixing mechanism is equipped with a first motor, the first motor drives the second bevel gear to rotate through the first bevel gear, and the second bevel gear drives the spiral ground pile to rotate through the screw rod, and then drills into the ground, which is convenient for increasing the first bottom plate stability, and the lower end of the second support column is provided with a baffle, and the upper end of the screw rod is provided with a stopper, which is convenient for limiting the lifting height of the screw rod and effectively improving its practicability.

Four: The locking mechanism is connected with the second fixed ring through the threaded groove on the upper end of the fixed plate, and the second groove and the second top plate are provided on the upper end of the fixed plate, and the spring rod outside the inner cavity of the second groove is provided with reinforcing ribs, The reinforcing rib is connected with the second fixing ring, and the lower end of the second top plate is provided with a first buffer strip, so that when the second steel rope shrinks, the supporting strength is increased through the spring rod, the reinforcing rib and the first buffer strip, and Effective cushioning and pressure relief, reducing the pressure it bears, and increasing its service life, and the mounting plate is connected to the third top plate through the second reinforcing column, the lower end of the third top plate is equidistantly equipped with shock absorbers, and the inner cavity of the supporting plate is set There is a reinforcing plate, and the upper end of the reinforcing plate is provided with a matching second buffer strip, which is convenient to further reduce the pressure of the hook and effectively increase its stable support performance, and the supporting plate is connected to the fixed sleeve through the connecting rod and the connecting block , the fixed sleeve is movably connected to the inner cavity of the chute outside the second support column through the slider, which facilitates the stable up and down movement of the support plate and effectively prevents it from shaking, which will affect the stable support of the hoisting equipment, and the second hydraulic cylinder passes through The second hydraulic rod drives the arc-shaped rack to squeeze the gear, which is convenient for fixing the hook and prevents it from swinging, causing the generator set to shake thereupon.

Compared with the existing technology, the structure design of the present invention is reasonable, and the structure is flexible to use, has strong practicability, is convenient to move, and is convenient to use, and effectively improves the stability of the hoisting support of the generator set, and effectively increases the safety of use .

Description of drawings

Fig. 1 is the schematic diagram of the front view of the overall structure proposed by the present invention;

Fig. 2 is the overall structure sectional structure schematic diagram that the present invention proposes;

Fig. 3 is a schematic diagram of the overall structure side view proposed by the present invention;

Fig. 4 is a side view structural schematic diagram of part of the second support mechanism proposed by the present invention;

Fig. 5 is a schematic diagram of a top view structure of a part of the locking mechanism proposed by the present invention;

Fig. 6 is a schematic diagram of the enlarged structure of the device of part A proposed by the present invention;

Fig. 7 is the schematic diagram of the enlarged structure of the A1 part device proposed by the present invention;

Fig. 8 is a schematic diagram showing the enlarged structure of the device in part A2 proposed by the present invention.

In the figure: first support mechanism 1, first bottom plate 11, moving wheel 12, first support column 13, first top plate 14, second support column 15, inclined support rod 16, second support mechanism 2, second bottom plate 21 , beam 22, first fixing ring 23, first steel rope 24, fixing kit 25, first fixing cover 26, first hydraulic cylinder 27, first hydraulic rod 28, first through groove 29, support block 221, fixing mechanism 3. The second fixed cover 31, the first motor 32, the first bevel gear 33, the mounting seat 34, the second bevel gear 35, the first groove 36, the stopper 37, the screw rod 38, the baffle 39, and the spiral pile 331, the second through groove 332, the lifting mechanism 4, the L-shaped support rod 41, the second motor 42, the main pulley 43, the belt 44, the secondary pulley 45, the rotating shaft 46, the bearing 47, the notch 48, the reel 49, the first Two steel ropes 441, the second fixed ring 442, locking mechanism 5, fixed plate 51, screw groove 52, support plate 53, mounting plate 54, the third fixed cover 55, hook 56, the second groove 57, spring bar 58, Reinforcing rib 59, second top plate 551, firm plate 552, first buffer bar 553, first reinforcing column 554, connecting rod 555, fixing sleeve 556, chute 557, slider 558, second reinforcing column 559, third top plate 5551, shock absorber 5552, reinforcing plate 5553, second buffer bar 5554, second hydraulic cylinder 5555, second hydraulic rod 5556, arc rack 5557, connecting shaft 5558, gear 5559.

Detailed ways

Referring to Figures 1-8, a wind turbine maintenance crane includes a first support mechanism 1, a second support mechanism 2, a fixing mechanism 3, a lifting mechanism 4, and a locking mechanism 5. The first support mechanism 1 includes two first Bottom plate 11, the outer side of first bottom plate 11 is all symmetrically provided with moving wheel 12, and the upper end of two first bottom plates 11 is connected with first top plate 14 jointly by first support column 13, and the lower end of first top plate 14 is symmetrically connected with the second Two support columns 15, the outer lower part of the second support column 15 is connected with the first support column 13 through the oblique support rod 16, the inner side of the two first bottom plates 11 is provided with a second support mechanism 2, and the second support mechanism 2 includes There are two second bottom plates 21 in contact with the first bottom plate 11, and the upper ends of the second bottom plates 21 are symmetrically connected with first fixed covers 26, and the upper ends of the inner chambers of the first fixed covers 26 are equipped with first hydraulic cylinders 27, The lower end of the first hydraulic cylinder 27 is connected with the first hydraulic rod 28, and the upper end of the second bottom plate 21 is symmetrically provided with the first through groove 29 matching it, and the first hydraulic rod 28 passes through the first through groove 29 A supporting block 221 is connected, so that when the second bottom plate 21 and the crossbeam 22 are pulled up, the first hydraulic cylinder 27 drives the first hydraulic rod 28 to move downward, and then is supported on the ground by the supporting block 221, which facilitates a more stable The second bottom plate 21 and the beam 22 are supported to prevent the unstable movement of the agricultural generating set at the upper end thereof.

The corresponding sides of the two second bottom plates 21 are connected with two crossbeams 22, and the upper ends of the second bottom plates 21 are symmetrically connected with first fixing rings 23, and the first fixing rings 23 are connected by first steel ropes 24 with fixed Kit 25, the upper end of the first base plate 11 is provided with a fixing mechanism 3, the fixing mechanism 3 includes two second fixing covers 31 connected with the first base plate 11, the inner cavity bottom of the second fixing cover 31 is equipped with the first A motor 32, the outside of the first motor 32 is provided with a first bevel gear 33, and the inner cavity upper end of the second fixed cover 31 is provided with a second bevel gear 35 through a mounting seat 34, and the second bevel gear 35 is connected to the first bevel gear. The gears 33 are engaged with each other, the lower end of the second support column 15 is provided with a first groove 36, the inner cavity of the first groove 36 is provided with a stopper 37, and the lower end of the stopper 37 is connected with a screw rod 38, The lower end of the second support column 15 is provided with a matching baffle plate 39, and the screw mandrel 38 runs through the second fixed cover 31 and extends to the inner cavity to be connected with the second bevel gear 35, and the lower end of the screw mandrel 38 Both are connected with spiral ground piles 331, and the upper end of the first bottom plate 11 is provided with a matching second through-slot 332. When the agricultural generating set breaks down when it is working in the field and needs to be overhauled, the external control switch can Turn on the first motor 32, and then the first motor 32 drives the second bevel gear 35 through the first bevel gear 33, and then the second bevel gear 35 drives the spiral ground pile 331 through the screw mandrel 38 to insert into the soil inner cavity, so as to facilitate more firm fixing The first bottom plate 11.

The lower end of the first top plate 14 is provided with a lifting mechanism 4, and the lifting mechanism 4 includes an L-shaped support bar 41 that is connected with the first top plate 14, and a second motor 42 is installed on the upper end of the L-shaped support bar 41, and the second motor 42 The outer side is sleeved with a belt 44 through the main pulley 43, and the side of the belt 44 away from the main pulley 43 is connected with a rotating shaft 46 through a secondary pulley 45. The rotating shaft 46 runs through the first top plate 14 and extends to the inner cavity to connect with a bearing 47. The first top plate 14 The upper end of the shaft is symmetrically provided with a notch 48, and the outer side of the rotating shaft 46 is symmetrically provided with a matching reel 49, and the reel 49 is connected with a second fixed ring 442 through a second steel rope 441, and the second fixed ring 442 The bottom of the lock mechanism 5 is provided with a locking mechanism 5. The locking mechanism 5 includes two fixing plates 51 connected with the second fixing ring 442. The upper ends of the fixing plates 51 are screwed with the second fixing ring 442 through the thread groove 52. The upper end of 51 is symmetrically provided with second groove 57, and the inner cavity of second groove 57 is all connected with spring bar 58, and the outside of spring bar 58 is all provided with reinforcing rib 59, and reinforcing rib 59 is far away from the side of spring bar 58. Connected with the second fixed ring 442, the upper end of the fixed plate 51 is symmetrically screwed with a second top plate 551 by bolts, and the upper ends of the second top plate 551 are all screwed with a firm plate 552 by bolts, and the lower ends of the second top plate 551 are both The first buffer bar 553 is symmetrically connected, and the lower end of the fixed plate 51 passes through the support plate 53 equidistantly through the first reinforcing column 554 and extends to the bottom to be screwed with a nut, which is convenient for further tightening between the second fixed ring 442 and the fixed plate 51. The connection strength is convenient for buffering and decompression, effectively improving its stability, and facilitating its service life.

The lower end of fixed plate 51 is all provided with support plate 53, and the lower end of support plate 53 is all connected with the 3rd fixed cover 55 by mounting plate 54, and the upper end of mounting plate 54 is all connected with second reinforcing column 559, and the second reinforcing column 559 The upper end runs through the support plate 53 and extends to the top to connect with the third top plate 5551, and the lower end of the third top plate 5551 is connected with shock absorbers 5552 equidistantly on both sides, and the inner cavity of the support plate 53 is equidistantly provided with matching reinforcement. Both the plate 5553 and the upper end of the reinforcement plate 5553 are provided with a second buffer strip 5554, which is convenient to increase the buffer support force for the third fixed cover 55, and prevent the hook 56 from bearing excessive pressure, which will affect its service life in the long run.

The lower end of the third fixed cover 55 is provided with a hook 56, the inner cavity of the third fixed cover 55 is installed on both sides of the second hydraulic cylinder 5555, and the second hydraulic cylinder 5555 is connected with an arc rack through the second hydraulic rod 5556 5557, the upper end of the hook 56 is connected with a matching gear 5559 through a connecting shaft 5558, which is convenient for effectively locking the hook 56 and preventing it from shaking during use.

Working principle: the present invention is connected with the first hydraulic cylinder 27, the first motor 32, the second motor 42, and the second hydraulic cylinder 5555 through an external general controller when in use. The bottom needs to be overhauled, so that the hoisting equipment can be moved to the work site. By moving the generating set to the upper end of the crossbeam 22, it is convenient to hang it. The switch of the second motor 42 to rotate forward is opened by the external controller. The second motor 42 drives the belt 44 to rotate through the main pulley 43, and then the belt 4 drives the secondary pulley 45 to rotate, and the secondary pulley 45 drives the two reels 49 to rotate through the rotating shaft 46, and then pulls the second steel rope 441 on the outside of the reel 49 Further, the second fixing ring 442 is connected with the threaded groove 52 at the upper end of the fixing plate 51, and the lower end of the fixing plate 51 is connected with the supporting plate 53 through the first reinforcing column 554 and the nut, so as to facilitate strengthening the connection strength between them, and The mounting plate 54 at the lower end of the support plate 53 connects the third fixed cover 55, and the hook 56 at the lower end of the third fixed cover 55 inserts the fixed sets 25 on the outside of the four first steel ropes 24 to intersect each other, so that the generator set is convenient and firm. After the hook 56 is plugged in, the switch of the second hydraulic cylinder 5555 is turned on through the external controller, so that the second hydraulic cylinder 5555 drives the arc-shaped rack 5557 to squeeze the gear 5559 through the second hydraulic rod 5556, thereby effectively fixing the hook 56 , prevent it from shaking during the ascent process, and affect the stable lifting of the generator set, and open the switch of the first motor 32 through the external controller, the first motor 32 drives the second bevel gear 35 to rotate through the first bevel gear 33, and then The second bevel gear 35 drives the screw mandrel 38 to rotate, and then the screw mandrel 38 drives the screw ground pile 331 to pass through the second through groove 332 and drill into the ground, so as to increase the stable support performance of the first bottom plate 11, and then open it by an external controller The switch of the second motor 42 reverse rotation, the main pulley 43 on the outside of the second motor 42 drives the secondary pulley 45 to rotate through the belt 44, and the secondary pulley 45 drives two reels 49 to rotate through the rotating shaft 46, and then to the outside of the reel 49 The second steel rope 441 is rewound, so that the first steel rope 24, the second bottom plate 21 and the crossbeam 22 can be pulled up by the locking mechanism 5, and the generator set can be easily lifted. When the lifting mechanism 4 rises to a certain position, the outer Set the controller to turn on the switch of the first hydraulic cylinder 27, and then the first hydraulic cylinder 27 drives the support block 221 to move downward through the first hydraulic rod 28, so as to be supported on the ground and effectively increase the force on the second bottom plate 21 and the beam 22. Stability, preventing it from shaking, and convenient to increase the safety of maintenance personnel when performing maintenance on the bottom of the generator set.

Claims (9)

1. A maintenance crane for a wind generating set comprises a first supporting mechanism (1), a second supporting mechanism (2), a fixing mechanism (3) and a lifting mechanism (4), characterized in that the first supporting mechanism (1) comprises two first bottom plates (11), the outer sides of the first bottom plates (11) are symmetrically provided with moving wheels (12), the upper ends of the two first bottom plates (11) are connected with a first top plate (14) through first supporting columns (13), the lower end of the first top plate (14) is symmetrically connected with second supporting columns (15), the lower parts of the outer sides of the second supporting columns (15) are connected with the first supporting columns (13) through inclined supporting rods (16), the inner sides of the two first bottom plates (11) are provided with second supporting mechanisms (2), the second supporting mechanism (2) comprises two second bottom plates (21) which are contacted with the first bottom plate (11), one sides of the two second bottom plates (21) which correspond to each other are connected with two cross beams (22) together, the upper ends of the second bottom plates (21) are symmetrically connected with first fixing rings (23), the first fixing rings (23) are connected with fixing sleeve members (25) through first steel ropes (24), the upper end of the first bottom plate (11) is provided with a fixing mechanism (3), and the lower end of the first top plate (14) is provided with a lifting mechanism (4).

2. The maintenance crane of the wind generating set according to claim 1, wherein the lifting mechanism (4) comprises an L-shaped supporting rod (41) connected with the first top plate (14), a second motor (42) is installed at the upper end of the L-shaped supporting rod (41), a belt (44) is sleeved on the outer side of the second motor (42) through a main belt pulley (43), one side, far away from the main belt pulley (43), of the belt (44) is connected with a rotating shaft (46) through a sub belt pulley (45), the rotating shaft (46) penetrates through the first top plate (14) and extends to an inner cavity to be connected with a bearing (47), notches (48) are symmetrically arranged at the upper end of the first top plate (14), reels (49) matched with the rotating shaft (46) are symmetrically arranged on the outer side of the rotating shaft (46), the reels (49) are connected with a second fixing ring (442) through second steel ropes (441), and a locking mechanism (5) is arranged below the second fixing ring (442).

3. The maintenance crane for the wind generating set according to claim 2, wherein the locking mechanism (5) comprises two fixing plates (51) connected with the second fixing ring (442), the upper ends of the fixing plates (51) are screwed with the second fixing ring (442) through thread grooves (52), the lower ends of the fixing plates (51) are provided with supporting plates (53), the lower ends of the supporting plates (53) are connected with third fixing covers (55) through mounting plates (54), and the lower ends of the third fixing covers (55) are provided with hooks (56).

4. The maintenance crane for the wind generating set according to claim 1, wherein the upper ends of the second bottom plates (21) are symmetrically connected with first fixing covers (26), the upper ends of the inner cavities of the first fixing covers (26) are provided with first hydraulic cylinders (27), the lower ends of the first hydraulic cylinders (27) are connected with first hydraulic rods (28), the upper ends of the second bottom plates (21) are symmetrically provided with first through grooves (29) matched with the first through grooves, and the first hydraulic rods (28) are connected with supporting blocks (221) through the first through grooves (29).

5. The maintenance crane for the wind generating set according to claim 1, wherein the fixing mechanism (3) comprises two second fixing covers (31) connected to the first base plate (11), the bottom ends of the inner cavities of the second fixing covers (31) are respectively provided with a first motor (32), the outer sides of the first motors (32) are respectively provided with a first bevel gear (33), the upper ends of the inner cavities of the second fixing covers (31) are respectively provided with a second bevel gear (35) through a mounting seat (34), the second bevel gears (35) are engaged with the first bevel gears (33), the lower ends of the second supporting columns (15) are respectively provided with a first groove (36), the inner cavities of the first grooves (36) are respectively provided with a stop block (37), the lower ends of the stop blocks (37) are respectively connected with a screw rod (38), the lower ends of the second supporting columns (15) are respectively provided with a baffle plate (39) matched therewith, the screw rods (38) respectively penetrate through the second fixing covers (31) and extend to the inner cavities to be connected with the second bevel gears (35), the lower ends of the screw rods (38) are respectively connected with the second base plates (332), and the upper ends of the second fixing covers (11) are respectively connected with the second spiral through grooves (332).

6. The maintenance crane for the wind generating set according to claim 3, wherein the upper end of the fixing plate (51) is symmetrically provided with a second groove (57), the inner cavity of the second groove (57) is connected with a spring rod (58), the outer side of the spring rod (58) is provided with a reinforcing rib (59), one side of the reinforcing rib (59) far away from the spring rod (58) is connected with a second fixing ring (442), the upper end of the fixing plate (51) is symmetrically screwed with a second top plate (551) through bolts, the upper end of the second top plate (551) is screwed with a fixing plate (552) through bolts, the lower end of the second top plate (551) is symmetrically connected with a first buffer strip (553), and the lower end of the fixing plate (51) penetrates through the supporting plate (53) at equal intervals through a first reinforcing column (554) and extends to the lower side to be screwed with a nut.

7. A maintenance crane for a wind generating set according to claim 3, characterized in that the outer sides of the supporting plates (53) are connected with connecting rods (555) at equal intervals, the connecting rods (555) are connected with a fixing sleeve (556) through connecting blocks, the outer side of the first supporting column (13) is symmetrically provided with sliding grooves (557) matched with the first supporting column, and the inner side of the fixing sleeve (556) is symmetrically provided with sliding blocks (558) matched with the positions of the sliding grooves (557).

8. The maintenance crane for the wind generating set according to claim 3, characterized in that the upper ends of the mounting plates (54) are connected with second reinforcing columns (559), the upper ends of the second reinforcing columns (559) penetrate through the supporting plate (53) and extend to the upper side to be connected with third top plates (5551), shock absorbers (5552) are connected to two sides of the lower ends of the third top plates (5551) at equal intervals, reinforcing plates (5553) matched with the inner cavities of the supporting plate (53) are arranged at equal intervals, and second buffer strips (5554) are arranged at the upper ends of the reinforcing plates (5553).

9. The maintenance crane for the wind generating set according to claim 3, wherein second hydraulic cylinders (5555) are installed on two sides of an inner cavity of the third fixing cover (55), the second hydraulic cylinders (5555) are connected with arc-shaped racks (5557) through second hydraulic rods (5556), and the upper ends of the hooks (56) are connected with gears (5559) matched with the hooks through connecting shafts (5558).

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