A wind turbine main shaft size detection auxiliary device

Abstract

The application belongs to the technical field of wind turbine detection, and discloses a wind turbine main shaft size detection auxiliary device, which comprises a base and a wind turbine placed on the top of the base. The wind turbine and the detection assembly are matched to make the rubber wheel roll on the rotating main shaft. When the main shaft forms eccentric rotation, it pushes several arc-shaped plates in each detection assembly to produce displacement. The two side arc-shaped plates push the guide plate to extrude the hydraulic oil in the inner part of the oil bucket two into the oil bucket one through the guide rod. The middle arc-shaped plate pushes the sealing plate to rise and extrude the hydraulic oil. Finally, the hydraulic cylinder is forced to stretch. After the display assembly limits the displacement of the indicating plate, it will not return to the original position. The setting of the several arc-shaped plates can make the angle of the main shaft deviation be recorded more comprehensively. Each detection assembly is an independent individual, which can record the angle of the deviation caused by the main shaft rotation separately. Meanwhile, accurate values can be further obtained for subsequent maintenance.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of wind turbine detection, and specifically relates to a wind turbine main shaft size detection auxiliary device. BACKGROUND

[0002] A wind turbine is a core part of a wind power generation system and covers each link from wind energy capture to electric energy conversion. After manufacturing, in order to ensure that the wind turbine can be safely, stably and efficiently operated, the wind turbine is generally powered on and strictly tested, including detection of important components such as a generator, a gear box, a control system, a main shaft and a gear box. The more important one is the size detection of the main shaft and the unit, and if the assembly size deviation occurs, the unit needs to be overhauled to determine where the problem is.

[0003] The prior art generally uses a large three-coordinate measuring machine to detect the wind turbine. After being powered on, the electronic components inside the unit are detected first, and the damaged electronic components are repaired or replaced. This technical means generally detects the assembly size of the main shaft in a static state, but the installation deviation of the main shaft will be gradually enlarged due to the weight during rotation, which makes the prior art unable to obtain relatively accurate detection values. Therefore, we provide a wind turbine main shaft size detection auxiliary device. SUMMARY

[0004] To solve the problems in the background art, the application provides a wind turbine main shaft size detection auxiliary device, which solves the problem that the installation deviation of the main shaft is gradually enlarged due to the weight during rotation, which makes the prior art unable to obtain relatively accurate detection values.

[0005] To achieve the above purpose, the application provides the following technical scheme: a wind turbine main shaft size detection auxiliary device, comprising a base and a wind turbine placed on the top of the base, further comprising;

[0006] A buffer assembly mounted on the top of the base and used for reducing vibration of the wind turbine;

[0007] A lead screw motor fixed to the top of the base;

[0008] A support slidingly mounted on the top of the base and threadedly connected to the output shaft of the lead screw motor;

[0009] A display assembly fixed to one side of the support and a driving assembly fixed to the other side of the support;

[0010] A locking assembly rotatably mounted in the middle of the support;

[0011] A plurality of detection assemblies arranged at equal angles on the driving assembly in a ring shape;

[0012] The detection assembly comprises three arc-shaped plates, a rubber wheel is mounted on the bottom bearing of the arc-shaped plates, and an oil tank one is communicated with the inner side of the oil supply ring, the inner side of the oil tank one is fixed with two symmetrical oil tanks two which are communicated with the oil tank one through a sealing plate, the two oil tanks two are fixed on the middle arc-shaped plate, each oil tank two is hinged to the two side arc-shaped plates through a guide plate and a guide rod, an indicating plate is mounted on the display assembly, and a hydraulic cylinder which abuts against the top of the indicating plate is communicated with the oil tank one;

[0013] The driving assembly is used for infusing oil into the oil tank one, and the locking assembly is used for preventing the oil in the driving assembly from entering the oil tank one.

[0014] The display assembly is used for preventing the indicating plate from returning to the initial position after displacement.

[0015] Preferably, the driving assembly comprises an oil supply ring which is fixed in the inner side of the support, a plurality of closed rods are mounted on the outer periphery of the oil supply ring at equal angles, a threaded rod is screw-mounted on the outer side of the oil supply ring, the inner side of the oil supply ring is filled with oil, and the outer side of the threaded rod movably clamps a crank.

[0016] Preferably, the locking assembly comprises a locking ring which is rotatably mounted in the inner side of the support, a plurality of inclined grooves are formed in the side surface of the locking ring at equal angles, each closed rod movably clamps in the locking ring, and a locking groove for the crank to enter is formed in the outer side of the locking ring.

[0017] Preferably, a metal plate movably penetrating the outer side of the support is arranged on the outer side of the locking ring, and the locking groove is located on the metal plate.

[0018] Preferably, the display assembly comprises a detection plate which is fixed on the side surface of the support, each indicating plate is elastically connected with the detection plate through a plurality of spring expansion rods which are mounted at equal angles, and the indicating plate movably clamps the side surface of the detection plate.

[0019] Preferably, the top of the indicating plate is hingedly connected with an oblique tooth plate one through a guide plate, the inner side of the detection plate is connected with an oblique tooth plate two through an electric expansion rod, the width of the oblique tooth plate two located in the inner groove of the detection plate is less than the width of the oblique tooth plate one, the top of the indicating plate is elastically connected with the middle part of the guide plate through an elastic member one, and the side surface of the guide plate is elastically connected with the oblique tooth plate one through an elastic member two.

[0020] Preferably, the elastic member one always pulls the guide plate to approach the side surface of the detection plate, and the elastic member two always pushes the oblique tooth plate one to engage with the oblique tooth plate two.

[0021] Preferably, the buffer assembly comprises two dampers respectively hinged to the top of the base at two ends, the top of each of the dampers is hinged to a metal sheet attached to the outer side of the wind turbine, and the outer side of each of the metal sheets is connected to a limiting frame by a plurality of nuts.

[0022] Preferably, the metal sheet is attached to a rubber pad on the side close to the wind turbine, and the limiting frame is made of metal and is provided at the top with a lock for hoisting.

[0023] Preferably, the top of the base is provided with a groove matching the bottom of the wind turbine, and the top of the base is provided at four corners with a lock respectively.

[0024] Compared with the prior art, the present application has the following advantages:

[0025] The present application is characterized in that the rubber wheel rolls on the rotating main shaft, and when the main shaft forms eccentric rotation, it pushes the plurality of arc-shaped plates in each detection assembly to displace, the two side arc-shaped plates push the guide plate to extrude the hydraulic oil in the inner part of the oil barrel II into the oil barrel I through the guide rod, and the middle arc-shaped plate pushes the sealing plate to rise and extrude the hydraulic oil, so as to finally force the hydraulic cylinder to extend, and the display assembly limits the displacement of the indicating plate, which will not return to the original position, the plurality of arc-shaped plates can comprehensively record the angle of the main shaft deviation, and each detection assembly is an independent individual, so that the angle of the deviation caused by the rotation of the main shaft can be recorded individually, and accurate values can be further obtained for subsequent maintenance.

[0026] The present application is characterized in that the weight of the metal plate forces the locking ring to rotate, so that the closing rod is always located at the outer end of the inclined groove, the connecting part between the oil barrel I and the oil supply ring is not closed by the closing rod, the operator can control the amount of hydraulic oil entering the oil supply ring through the threaded rod, and does not need to pay excessive attention to the position of the locking ring, after the hydraulic oil enters the oil barrel I, the rotating locking ring makes the closing rod descend along the track of the inclined groove and close the connecting part between the oil supply ring and the oil barrel I, when the inclined groove and the ratchet are located on the same plane, the sliding ratchet enters the locking groove, at this time, the ratchet cannot drive the threaded rod to descend, and the locking ring cannot rotate, so as to achieve the purpose of self-locking, and the stability of the device in operation is improved.

[0027] The present application is characterized in that when the hydraulic cylinder pushes the indicating plate to descend, the spring telescopic rod is compressed, and at the same time drives the spring telescopic rod and the oblique toothed plate to descend, and due to the limitation of the elastic member I and the elastic member II, the oblique toothed plate I will be tightly attached to the oblique toothed plate II, when the hydraulic cylinder retracts, the oblique toothed plate II limits the oblique toothed plate I to rise, which is no longer in contact with the indicating plate, and the spring telescopic rod will always be in a compressed state, and further, the angle of the main shaft deviation is recorded more clearly. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a schematic diagram of the appearance structure of the application;

[0029] Figure 2 It is a schematic diagram of the internal structure of the support of the application;

[0030] Figure 3 It is a schematic diagram of the structure cooperation of the threaded rod and the locking groove of the application;

[0031] Figure 4 It is a schematic diagram of the internal structure of the oil bucket of the application;

[0032] Figure 5 It is a schematic diagram of the exploded structure of the detection assembly of the application;

[0033] Figure 6 It is a schematic diagram of the structure cooperation of the display assembly and the detection assembly of the application;

[0034] Figure 7 It is a schematic diagram of the internal structure of the detection plate of the application;

[0035] Figure 8 It is a schematic diagram of the structure cooperation of the buffer assembly and the wind turbine generator of the application.

[0036] In the figure: 1, base; 2, screw motor; 3, support; 4, buffer assembly; 41, damper; 42, metal sheet; 43, limiting frame; 5, display assembly; 51, detection plate; 52, spring telescopic rod; 53, guide plate; 54, elastic piece one; 55, oblique toothed plate one; 56, elastic piece two; 57, oblique toothed plate two; 58, electric telescopic rod; 6, driving assembly; 61, oil supply ring; 62, closing rod; 63, threaded rod; 64, crank; 7, detection assembly; 71, oil bucket one; 72, sealing plate; 73, oil bucket two; 74, guide plate; 75, guide rod; 76, arc plate; 77, hydraulic cylinder; 78, indicating plate; 79, rubber wheel; 8, locking assembly; 81, locking ring; 82, locking groove; 83, inclined groove; 9, wind turbine generator. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0038] As Figures 1 to 8As shown, the present application provides a kind of wind turbine main shaft size detection auxiliary device, including base 1 and placing on the top of base 1 wind turbine 9, also includes;

[0039] Buffer assembly 4 is installed on the top of base 1 and used to slow down the vibration of wind turbine 9;

[0040] Lead screw motor 2 is fixed on the top of base 1;

[0041] Support 3 is slidingly installed on the top of base 1 and screw connected to the output shaft of lead screw motor 2;

[0042] Display assembly 5 is fixed on one side of support 3 and driving assembly 6 is fixed on the other side;

[0043] Locking assembly 8 is rotatably installed in the middle of support 3;

[0044] Several detection assemblies 7 are arranged at equal angles on driving assembly 6;

[0045] Detection assembly 7 includes three arc-shaped plates 76 and oil tank one 71 connected to the inside of oil supply ring 61, rubber wheels 79 are installed on the bottom of arc-shaped plates 76, two oil tank two 73 are fixed in the inside of oil tank one 71 through sealing plate 72, two oil tank two 73 are symmetrically connected to the inside of oil tank one 71, two oil tank two 73 are fixed on the middle arc-shaped plate 76, each oil tank two 73 is hinged to two side arc-shaped plates 76 through a guide plate 74 and a guide rod 75, an indicator plate 78 is installed on display assembly 5, and a hydraulic cylinder 77 is connected to the top of indicator plate 78;

[0046] Driving assembly 6 is used to inject oil into oil tank one 71, and locking assembly 8 is used to prevent oil in driving assembly 6 from entering oil tank one 71;

[0047] Display assembly 5 is used to prevent indicator plate 78 from returning to the initial position after displacement.

[0048] The above scheme is adopted: wind turbine 9 is hoisted to the top of base 1 in priority, and support 3 is displaced by lead screw motor 2, and lead screw motor 2 is stopped when several detection assemblies 7 are located on the periphery of the main shaft of wind turbine 9;

[0049] Hydraulic oil is pumped into the inside of oil tank one 71 by driving assembly 6, at this time, sealing plate 72 is lowered, rubber wheels 79 on the bottom of arc-shaped plates 76 gradually contact the main shaft, and the material of rubber wheels 79 can not scratch the main shaft when contacting the main shaft, and then driving assembly 6 is controlled by locking assembly 8 not to pump hydraulic oil into oil tank one 71;

[0050] When the wind turbine 9 starts, the main shaft rotates, and the rubber wheel 79 rolls on the main shaft. When the main shaft and the internal elements of the wind turbine 9 are installed with size deviation, eccentric rotation is formed, and the several arc-shaped plates 76 in each detection assembly 7 are pushed to displace. When the arc-shaped plates 76 on both sides displace, the guide plates 74 are pushed to rise by the guide rods 75, and the hydraulic oil in the oil bucket two 73 is squeezed into the oil bucket one 71 by the guide plates 74. When the arc-shaped plate 76 in the middle rises, the sealing plate 72 is pushed to rise by the oil bucket two 73 and the hydraulic oil is squeezed. Since the driving assembly 6 cannot pump the hydraulic oil into the oil bucket one 71, the excess hydraulic oil will enter the hydraulic cylinder 77, so as to force the hydraulic cylinder 77 to extend and push the indicating plate 78 to descend. Due to the limitation of the display assembly 5, the indicating plate 78 will not return to the original position after displacement.

[0051] The several arc-shaped plates 76 are attached to the main shaft by the rubber wheel 79, which can more comprehensively record the angle of the deviation of the main shaft. Each detection assembly 7 is an independent individual, which can record the angle of the deviation caused by the rotation of the main shaft, and further obtain accurate values for subsequent maintenance.

[0052] As shown in Figures 1-3 , the driving assembly 6 comprises an oil supply ring 61 fixed in the support 3. A plurality of closed rods 62 are installed on the outer periphery of the oil supply ring 61 at equal angles. A threaded rod 63 is screw-mounted on the outside of the oil supply ring 61. The inside of the oil supply ring 61 is filled with oil. A crank 64 is movably connected to the outside of the threaded rod 63.

[0053] By using the above scheme, the threaded rod 63 can be rotated more labor-saving and conveniently by the crank 64. After the threaded rod 63 is rotated and displaced, the volume in the oil supply ring 61 increases, and the hydraulic oil can enter the inside of the oil bucket one 71. After the test is completed, the hydraulic oil can be extracted by reverse rotation, so that the operation of the device is more simple.

[0054] As shown in Figures 1-3 , the locking assembly 8 comprises a locking ring 81 rotatably installed in the support 3. A plurality of inclined grooves 83 are formed on the side surface of the locking ring 81 at equal angles. Each closed rod 62 is movably connected to the inside of the locking ring 81. A locking groove 82 is formed on the outside of the locking ring 81 for the entry of the crank 64.

[0055] A metal plate movably penetrating the outside of the support 3 is arranged on the outside of the locking ring 81. The locking groove 82 is located on the metal plate.

[0056] When the device is not working, the weight of the metal plate forces the locking ring 81 to rotate, so that the closing rod 62 is located at the outer end of the inclined groove 83, the connection between the oil bucket one 71 and the oil supply ring 61 is not closed by the closing rod 62, and the operator can control the amount of hydraulic oil entering the oil supply ring 61 through the threaded rod 63, without having to pay too much attention to the position of the locking ring 81;

[0057] When the hydraulic oil enters the oil bucket one 71, the metal plate can more conveniently rotate the locking ring 81, so that the closing rod 62 descends through the track of the inclined groove 83 and closes the communication between the oil supply ring 61 and the oil bucket one 71, when the inclined groove 83 and the ratchet 64 are located in the same plane, the sliding ratchet 64 is located in the locking groove 82, at this time the ratchet 64 cannot drive the threaded rod 63 to descend, and the locking ring 81 cannot rotate, so as to achieve the purpose of self-locking, and further improve the stability of the device working.

[0058] As shown in Figures 1-7 The display assembly 5 includes a detection plate 51 fixed to the side of the support 3, the detection plate 51 is elastically connected with each indicator plate 78 through a plurality of spring telescopic rods 52 installed at equal angles, and the indicator plate 78 is movably clamped to the side of the detection plate 51.

[0059] The top of the indicator plate 78 is hingedly connected with a bevel gear plate one 55 through a guide plate 53, the inner side of the detection plate 51 is connected with a bevel gear plate two 57 through an electric telescopic rod 58, the width of the bevel gear plate two 57 located in the inner slot of the detection plate 51 is less than the width of the bevel gear plate one 55, the top of the indicator plate 78 is elastically connected with the middle part of the guide plate 53 through an elastic member one 54, and the side of the guide plate 53 is elastically connected with the bevel gear plate one 55 through an elastic member two 56.

[0060] The elastic member one 54 always pulls the guide plate 53 to approach the side of the detection plate 51, and the elastic member two 56 always pushes the bevel gear plate one 55 to engage with the bevel gear plate two 57.

[0061] When the hydraulic cylinder 77 pushes the indicator plate 78 to descend, the spring telescopic rod 52 is compressed, and drives the spring telescopic rod 52 and the bevel gear plate one 55 to descend, and due to the limitation of the elastic member one 54 and the elastic member two 56, the bevel gear plate one 55 will tightly adhere to the bevel gear plate two 57, when the hydraulic cylinder 77 retracts, the bevel gear plate two 57 limits the bevel gear plate one 55 to ascend, and the bevel gear plate one 55 no longer contacts the indicator plate 78, and the spring telescopic rod 52 will always be in a compressed state, and further, the angle of the spindle deviation is recorded more clearly;

[0062] When the test work ends, the displacement of the oblique tooth plate two 57 is controlled through the electric telescopic rod 58, since the width of the slot in the detection plate 51 for placing the oblique tooth plate two 57 is smaller than the width of the oblique tooth plate one 55, the oblique tooth plate two 57 is no longer in contact with the oblique tooth plate one 55, and the spring telescopic rod 52 pushes the indicating plate 78 back to the initial position, further improving the convenience of the device work.

[0063] As shown in Figure 1 and Figure 8 , the buffer assembly 4 includes two dampers 41 respectively hinged at the top of the base 1 at both ends, the top of each damper 41 is hinged with a metal sheet 42 attached to the outside of the wind turbine 9, and the outside of each metal sheet 42 is commonly connected with a limiting frame 43 through several nuts.

[0064] The side of the metal sheet 42 close to the wind turbine 9 is pasted with a rubber pad, and the limiting frame 43 is made of metal and has a lock catch installed at the top for hoisting.

[0065] With the above scheme: when the buffer assembly 4 is in the state as shown in Figure 8 , the vibration generated by the rotation of the wind turbine 9 will be attenuated by the damper 41, thereby reducing the false judgment caused by vibration, and the lock catch on the limiting frame 43 can facilitate subsequent disassembly and replacement of the wind turbine 9, wherein the rubber pad can avoid scratching the external paint of the wind turbine 9 when the metal sheet 42 contacts it.

[0066] As shown in Figure 1 and Figure 8 , the top of the base 1 is provided with a groove matching the bottom of the wind turbine 9, and a lock catch is installed at each corner of the top of the base 1.

[0067] With the above scheme: the groove at the top of the base 1 can make the wind turbine 9 better placed on it, and the lock catches at the four corners of the base 1 can facilitate subsequent hoisting and replacement of the position when the device is not working.

[0068] Working principle and use process of the present application:

[0069] The wind turbine 9 is hoisted to the top of the base 1 first, and the displacement of the bracket 3 is driven by the lead screw motor 2, and when several detection assemblies 7 are located at the periphery of the main shaft of the wind turbine 9, the lead screw motor 2 can be stopped;

[0070] The limiting frame 43 is fixed on the metal sheet 42 through the nuts, and the vibration generated by the work of the wind turbine 9 is attenuated by the damper 41;

[0071] The threaded rod 63 is rotated by the ratchet 64, and the hydraulic oil enters the inside of the oil drum one 71, when the hydraulic oil is pumped into the inside of the oil drum one 71, the sealing plate 72 descends, and the rubber wheel 79 at the bottom of the arc-shaped plate 76 gradually contacts the main shaft;

[0072] By rotating the locking ring 81, the closing rod 62 is lowered along the track of the inclined groove 83 and closes the communication between the oil supply ring 61 and the oil bucket 71. When the inclined groove 83 and the handle 64 are in the same plane, sliding the handle 64 into the locking groove 82, the handle 64 cannot lower the threaded rod 63, and the locking ring 81 cannot rotate, thus achieving the purpose of self-locking.

[0073] When the main shaft rotates, the rubber wheel 79 rolls on the main shaft. When the main shaft and the internal elements of the wind turbine 9 have a size deviation during installation, eccentric rotation is formed, and the displacement of the several arc-shaped plates 76 in each detection assembly 7 is generated. When the two side arc-shaped plates 76 are displaced, the guide plate 74 is pushed up by the guide rod 75, and the hydraulic oil in the oil bucket two 73 is squeezed into the oil bucket one 71 through the guide plate 74. When the middle arc-shaped plate 76 is raised, the sealing plate 72 is pushed up by the oil bucket two 73 and squeezes the hydraulic oil. Since the driving assembly 6 cannot pump hydraulic oil into the oil bucket one 71, the excess hydraulic oil will enter the hydraulic cylinder 77, thereby forcing the hydraulic cylinder 77 to extend and pushing the indicator plate 78 down.

[0074] The spring telescopic rod 52 is compressed, and the spring telescopic rod 52 and the bevel gear plate one 55 are lowered. Due to the restriction of the elastic member one 54 and the elastic member two 56, the bevel gear plate one 55 will be in close contact with the bevel gear plate two 57. When the hydraulic cylinder 77 retracts, the bevel gear plate two 57 restricts the bevel gear plate one 55 from rising, which is no longer in contact with the indicator plate 78, and the spring telescopic rod 52 will always be in a compressed state.

[0075] It should be noted that the relative terms such as first and second, etc. are used herein only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0076] Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A kind of wind turbine main shaft size detection auxiliary device, including base (1) and the wind turbine (9) of placing in the top of base (1), it is characterized in that, Also include; The buffer assembly (4) is installed on the top of the base (1) and used for reducing the vibration of the wind turbine (9); The screw rod motor (2) is fixed on the top of the base (1); The bracket (3) is slidingly installed on the top of the base (1) and threadedly connected to the output shaft of the screw rod motor (2); The display assembly (5) is fixed on one side of the bracket (3) and the driving assembly (6) is fixed on the other side; The locking assembly (8) is rotatably installed in the middle of the bracket (3); A plurality of detection assemblies (7) are arranged at equal angles on the driving assembly (6); The detection assembly (7) comprises three arc-shaped plates (76) and an oil tank one (71) communicated with the inner side of the oil supply ring (61), the bottom of the arc-shaped plate (76) is bearingly installed with a rubber wheel (79), the inside of the oil tank one (71) is fixed with two symmetrical oil tank twos (73) communicated with the inside of the oil tank one (71) through a sealing plate (72), the two oil tank twos (73) are jointly fixed on the middle arc-shaped plate (76), each oil tank two (73) is hingedly connected with the two side arc-shaped plates (76) through a guide plate (74) and a guide rod (75), the display assembly (5) is installed with an indicating plate (78), the oil tank one (71) is communicated with a hydraulic cylinder (77) abutting on the top of the indicating plate (78); The driving assembly (6) is used for injecting oil into the oil tank one (71), and the locking assembly (8) is used for preventing the oil in the driving assembly (6) from entering the oil tank one (71); The display assembly (5) is used for preventing the indicating plate (78) from returning to the initial position after displacement, the driving assembly (6) comprises an oil supply ring (61) fixed in the inside of the bracket (3), a plurality of closed rods (62) are arranged at equal angles on the outer periphery of the oil supply ring (61), a threaded rod (63) is threadedly installed on the outer side of the oil supply ring (61), the inside of the oil supply ring (61) is filled with oil, and a crank (64) is movably clamped on the outer side of the threaded rod (63); the locking assembly (8) comprises a locking ring (81) rotatably installed in the inside of the bracket (3), a plurality of inclined grooves (83) are formed at equal angles on the side surface of the locking ring (81), each closed rod (62) is movably clamped in the locking ring (81), and a locking groove (82) is formed on the outer side of the locking ring (81) for the crank (64) to enter; The display assembly (5) comprises a detection plate (51) fixed on the side of the bracket (3), each indicating plate (78) is elastically connected with the detection plate (51) through a plurality of spring expansion rods (52) arranged at equal angles, and the indicating plate (78) is movably clamped on the side of the detection plate (51). The top of the indicating plate (78) is hinged with a bevel gear plate one (55) through a guide plate (53), the inner side of the detecting plate (51) is connected with a bevel gear plate two (57) through an electric telescopic rod (58), the width of the inner slot of the detecting plate (51) is less than that of the bevel gear plate two (57), the top of the indicating plate (78) is elastically connected with the middle part of the guide plate (53) through an elastic member one (54), and the side of the guide plate (53) is elastically connected with the bevel gear plate one (55) through an elastic member two (56).

2. The wind turbine main shaft dimension detection auxiliary device according to claim 1, characterized in that: The outer side of the locking ring (81) is provided with a metal plate which is movably penetrated through the outer side of the support (3), and the locking groove (82) is located on the metal plate.

3. The wind turbine main shaft dimension detection auxiliary device according to claim 1, characterized in that: The elastic member one (54) always pulls the guide plate (53) to be close to the side of the detecting plate (51), and the elastic member two (56) always pushes the bevel gear plate one (55) to engage with the bevel gear plate two (57).

4. The wind turbine main shaft dimension detection auxiliary device according to claim 1, characterized in that: The buffer assembly (4) comprises two dampers (41) which are respectively hinged at the two ends of the top of the base (1), the top of each damper (41) is hinged with a metal sheet (42) which is attached to the outer side of the wind turbine (9), and the outer side of each metal sheet (42) is commonly connected with a limiting frame (43) through a plurality of nuts.

5. The wind turbine main shaft dimension detection auxiliary device according to claim 4, characterized in that: The side of the metal sheet (42) close to the wind turbine (9) is attached with a rubber pad, and the limiting frame (43) is made of metal and is provided at the top with a lock buckle for hoisting.

6. The wind turbine main shaft dimension detection aid of claim 1, wherein: The top of the base (1) is provided with a groove which is matched with the bottom of the wind turbine (9), and the four corners of the top of the base (1) are respectively provided with a lock buckle. The top of the base (1) is provided with a groove which is matched with the bottom of the wind turbine (9), and the four corners of the top of the base (1) are respectively provided with a lock buckle.

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