Wind power main shaft shot blasting conveyor and shot blasting line

Abstract

The invention discloses a wind power main shaft shot blasting cleaning conveyor and a shot blasting cleaning line, and the wind power main shaft shot blasting cleaning conveyor comprises a trolley which is provided with a frame and an auxiliary frame located at the front end of the frame; the top supporting wheel assemblies are arranged on the two sides of the left middle face and the right middle face of the trolley correspondingly. The front supporting wheel assemblies are arranged on the auxiliary frame, the number of the front supporting wheel assemblies is at least two, and the two corresponding supporting wheel assemblies support the flange of the wind power main shaft to form a friction pair; the driving device is used for driving the front supporting wheel assembly to rotate and driving the wind power main shaft to rotate through the friction pair; and the blocking roller is arranged on the auxiliary frame and located on the front side of the flange, so that the front side limiting device of the wind power main shaft on the trolley is formed. The shot blasting machine for the wind power main shaft is relatively good in supporting stability and relatively good in working reliability.

Description

Technical Field

[0001] The present invention relates to a shot blasting and cleaning conveyor for a wind power spindle, and also to a shot blasting and cleaning line equipped with the shot blasting and cleaning conveyor for the wind power spindle. Background Art

[0002] Shot blasting machines are widely used in the field of surface cleaning. By the impact of the shot blasted onto the surface of the workpiece, the attachments on the surface of the workpiece are removed, making the surface of the workpiece smooth. The wind power spindle is an important component connecting the wind wings of the wind turbine and the base of the wind turbine. Due to the harsh working environment of wind power generation equipment, how to improve the anti-corrosion performance of wind power products is of utmost importance. Through the comprehensive shot blasting and cleaning of the shot blasting machine, the adhesion of the surface coating of the wind power spindle can be effectively improved, thereby increasing the service life of the product.

[0003] Since the wind power spindle is relatively large in size, a special trolley is often required to ensure stable transportation of the wind power spindle during shot blasting on the shot blasting and cleaning line. Typically, as disclosed in Chinese Patent Document CN214869821U, a manual sandblasting room trolley is disclosed. Although this patent document does not involve shot blasting, sandblasting is similar to shot blasting in some aspects, especially for the use of the trolley. For a wind power spindle, a trolley is often needed to carry it and rotate the wind power spindle around its own axis during sandblasting or shot blasting, so as to perform sandblasting or shot blasting and cleaning on the outer cylindrical surface or inner cylindrical surface of the wind power spindle.

[0004] Furthermore, in the Chinese Patent Document CN214869821U, four roller racks are provided on a trolley plate, and a pair of roller racks are provided on each side (both sides of the left-right middle plane) corresponding to the lower bus of the wind power spindle, so as to support the wind power spindle on the trolley plate. One of the roller racks or the rollers provided on the two roller racks on the same side are driving rollers, so as to realize the rotation of the wind power spindle around its own axis, which is more conducive to the cleaning of the inner surface and outer surface of the wind power spindle.

[0005] It should be known that most wind power spindles are large forgings. For example, the wind power spindle of a certain type of 9MW wind turbine has a length of 4.48 meters, a flange diameter of up to 3.3 meters, and a total blank weight of nearly 90 tons. The diameter of the main body of the shaft is about one-third to one-half of the flange diameter (mostly around 40%). In other words, the flange diameter of the wind power spindle is much larger than the diameter of its shaft body. In the aforementioned Chinese Patent Document CN214869821U, the support of the trolley for the wind power spindle is located at the shaft part of the wind power spindle, without considering the flange of the wind power spindle. Relatively speaking, the weight at the flange is relatively large, and due to the relatively large self-weight of the wind power spindle, its inertia during transportation is also very large, and it is very easy for the wind power spindle to have axial movement during the cleaning process. Summary of the Invention

[0006] The object of the present invention is to provide a shot blasting and cleaning conveyor for a wind power main shaft with relatively good support stability and relatively good working reliability. The present invention also provides a shot blasting and cleaning line equipped with the shot blasting and cleaning conveyor for a wind power main shaft.

[0007] According to the first aspect of the embodiments of the present invention, there is provided a shot blasting and cleaning conveyor for a wind power main shaft, including: A trolley, which has a frame and a sub-frame located at the front end of the frame, and a running system for driving the frame; Top support wheel assemblies, which are arranged on the frame, and one set is provided on each side of the left-right middle plane of the trolley for supporting the shaft body of the wind power main shaft; Front support wheel assemblies, which are arranged on the sub-frame, and there are at least two front support wheel assemblies. The two support wheel assemblies are symmetric about the left-right middle plane of the trolley and support the flange of the wind power main shaft to form a friction pair; A driving device for driving the front support wheel assemblies to rotate and driving the wind power main shaft to rotate through the friction pair; and A retaining roller, which is arranged on the sub-frame and located on the front side of the flange, and constitutes a front-side limiting device for the wind power main shaft on the trolley.

[0008] Optionally, there are four front support wheel assemblies, which are divided into two groups. The two front support wheel assemblies within a group are symmetric about the left-right middle plane of the trolley; The first central angle of the wind power main shaft corresponding to the front support wheel assemblies in one group is greater than the second central angle of the wind power main shaft corresponding to the front support wheel assemblies in the other group, and the first central angle is greater than the central angle of the wind power main shaft corresponding to the left and right top support wheel assemblies in the top support wheel assemblies.

[0009] Optionally, the distance between the corresponding left and right top support wheel assemblies is adjustable.

[0010] Optionally, the structure for the adjustable distance between the corresponding left and right top support wheel assemblies is that the top support wheel assemblies are installed on the left and right guide rails and are equipped with a locking mechanism or structure to lock them after the top support wheel assemblies are adjusted in place.

[0011] Optionally, the distance between the front support wheel assemblies is adjustable to adapt to different flanges.

[0012] Optionally, the axis of the retaining roller is a horizontal axis or a vertical axis, the number of retaining rollers is an even number, and they are arranged in the lower half of the flange; The even number of retaining rollers is divided into two equal groups, and the two groups of retaining rollers are symmetric about the left-right middle plane of the trolley.

[0013] Optionally, the front support wheel assembly includes a front support wheel and a front shield that shields the front support wheel from the outside. The front shield contains a flexible plate for mating with the outer profile of the wind power main shaft and shielding the front support wheel at the upper part of the front shield to prevent projectiles from entering the wedge-shaped space between the front support wheel and the wind power main shaft. The top support wheel assembly includes a top support wheel shaft and a top shield that shields the fixed support wheel from the outside. The top shield contains a flexible plate for mating with the outer profile of the wind power main shaft and shielding the top support wheel at the upper part of the fixed shield to prevent projectiles from entering the wedge-shaped space between the fixed support wheel and the wind power main shaft.

[0014] Optionally, the power unit of the running system of the trolley is a stepless speed regulation motor.

[0015] Optionally, the support wheels used in the top support wheel assembly and the front support wheel assembly are rubber-coated friction wheels.

[0016] According to the second aspect of the embodiments of the present invention, a shot blasting cleaning line is provided, which includes the wind power main shaft shot blasting cleaning conveyor according to the first aspect of the embodiments of the present invention and a guide rail on which the trolley for the wind power main shaft shot blasting cleaning conveyor runs.

[0017] The wind power main shaft shot blasting cleaning conveyor according to the embodiments of the present invention has a trolley, on which a top support wheel assembly for supporting the shaft body of the wind power main shaft and a front support wheel assembly for supporting the flange located on the front sub-frame of the trolley are provided. The front support wheel assembly and the top support wheel assembly jointly support the wind power main shaft, and the power for rotating the wind power main shaft around its own axis comes from the front support wheel assembly. On the one hand, since the diameter of the flange of the wind power main shaft is much larger than the diameter of the shaft body, therefore, the front support wheel assembly for supporting the flange can still provide a relatively large torque under the condition of relatively small driving friction force, so the driving stability is relatively good. And also because the center of gravity of the wind power main shaft is close to the flange, using the front support wheel assembly to support the flange alone helps to improve the balance of the overall support, and the power side is located at the end where the flange is located, and the overall driving stability is also relatively good. In addition, considering the inertia of operation, a stop roller is also provided on the sub-frame, and the stop roller is located in front of the flange, so as to prevent the wind power main shaft from moving forward while ensuring the normal rotation of the wind power main shaft. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of a shot blasting cleaning line suitable for shot blasting of wind power main shafts in an embodiment.

[0019] Figure 2 It is a front view structural schematic diagram of a wind power main shaft shot blasting cleaning conveyor in an embodiment.

[0020] Figure 3 It is a top view structural schematic diagram of a wind power main shaft shot blasting cleaning conveyor in an embodiment.

[0021] Figure 4 It is a top view structural schematic diagram of the shot blasting and cleaning conveyor for a wind power main shaft in an embodiment (the frame cover plate is omitted).

[0022] Figure 5 It is a right view structural schematic diagram of the shot blasting and cleaning conveyor for a wind power main shaft in an embodiment.

[0023] Figure 6 It is a main sectional structural schematic diagram of the front support wheel assembly in an embodiment.

[0024] Figure 7 It is a main sectional structural schematic diagram of the top support wheel assembly in an embodiment.

[0025] Figure 8 For Figure 2 the enlarged view of part Ⅰ.

[0026] Figure 9 It is a structural schematic diagram of the shield of the top support wheel assembly in an embodiment.

[0027] In the figure: 1. Wind power main shaft, 2. Conveyor trolley, 3. Hopper, 4. Screw conveyor, 5. Shot blasting chamber, 6. Lifting door, 7. Shot blaster, 8. Separator, 9. Maintenance platform, 10. Elevator, 11. Shot supply system, 12. Vibrating conveyor screen, 13. Driving wheel, 14. Travel drive, 15. Frame, 16. Maintenance opening, 17. Top support wheel assembly, 18. Shield of top support wheel assembly, 19. Driven sprocket, 20. Front support wheel assembly, 21. Front cover, 22. Cover plate, 23. Self-rotation drive, 24. Driving sprocket, 25. Driving wheel shaft, 26. Chain drive mechanism, 27. Bearing seat, 28. Spherical roller bearing, 29. Sealing cover, 30. Shaft seal, 31. Outer retaining ring, 32. Front support wheel shaft, 33. Front support wheel, 34. Inner labyrinth ring, 35. Spacer sleeve, 36. Driven sprocket, 37. Bracket, 38. Top support wheel, 39. Fixed plate, 40. Bearing cover, 41. Spherical roller bearing, 42. Inner retaining ring, 43. Top support wheel shaft, 44. Shaft seal, 45. Grease nipple, 46. Bearing cover, 47. Retaining roller, 48. Wind power main shaft, 49. Vertical shaft, 50. Bracket, 51. Fixed plate, 52. Vertical plate, 53. Reinforcing plate, 54. Sealing plate, 55. Pressure plate, 56. Polyurethane sealing plate, 57. Screw, 58. Arc-shaped opening. Detailed implementation manners

[0028] In the embodiments of the present invention, emphasis is placed on the improvement of the conveyor for transporting the wind power spindle 1 on the shot blasting cleaning line, and for other parts, the existing technologies can be adopted. It should be known that for the wind power spindle shot blasting cleaning conveyor including the transport trolley 2 (hereinafter simply referred to as the trolley), it has a definite front and rear. The trolley, like other vehicles, has a definite front and rear, and the front and rear are also called the head and tail. For example, the vehicle head is named after this. The front and rear directions are also called the longitudinal direction. For example, the longitudinal beam is named after this. In addition, the front and rear directions are also called the length direction (generally simply referred to as the long direction). In the embodiments of the present invention, the longitudinal direction of the trolley is also the axial direction of the wind power spindle 1.

[0029] Correspondingly, generally after the front and rear are determined, the left and right are determined. The left and right directions are also called the transverse direction and the span direction, and the dimension in the left and right directions can generally also be called the width.

[0030] After the front and rear, left and right are determined, the height direction is also determined. The height direction is also called the up and down direction, and the up and down direction under the plumb condition is also called the vertical direction.

[0031] As described in the background art section, traditional wind power spindles 1 usually also use trolleys for transportation, but usually only use two pairs of support wheel assemblies for support, and support at the shaft body of the wind power spindle 1. On the one hand, since the flange of the wind power spindle 1 is relatively large, and even for the shaft body, a stepped shaft structure is mostly adopted, and the shaft section with a relatively large shaft diameter on the shaft body is relatively close to the flange. In other words, for the wind power spindle 1, its center of gravity is not in the middle, but closer to its flange.

[0032] For the trolley, generally tracks are used to guide it, so that the wind power spindle 1 can be sent into the shot blasting chamber 5 in the axial direction of the wind power spindle 1 as shown in Figure 1 After the shot blasting is completed, it exits the shot blasting chamber 5 from the opposite side of the shot blasting chamber 5 or retreats to exit the shot blasting chamber 5.

[0033] First, the basic composition of the shot blasting chamber will be briefly described. In the Figure 1 illustrated structure, the bottom plate of the shot blasting chamber 5 provided with tracks is generally a perforated plate or a mesh plate, and the shot used in the shot blasting process enters the material receiving device below it through, for example, the mesh plate during the shot blasting process.

[0034] The material receiving device generally includes a hopper-shaped hopper 3. The hopper 3 is generally a conical structure with a large upper part and a small lower part. The shot material collected by the hopper 3 is fed through the outlet at the lower part of the hopper 3 to the screw conveyor 4 as shown in Figure 1 .

[0035] Further, the downstream process equipment of the screw conveyor 4 is, for example, a vibrating screening machine 12 to screen out the rust and dust doped in the shot material. The shot material is sent to the lower end of the elevator 10 as shown in Figure 1 . The elevator 10 lifts the shot material toFigure 1 The separator 8 shown in the figure is used to further separate the shot materials. Generally, a shot feeding device is provided on the lower side of the separator 8 to feed the shot blasting machine 7.

[0036] Generally, multiple shot blasting machines 7 are equipped. Figure 1 Five shot blasting machines are shown in the figure to perform shot blasting on the wind power main shaft 1 from different directions or to perform shot blasting on the wind power main shaft 1 sequentially in the same direction.

[0037] The environment inside the shot blasting chamber 5 is extremely harsh. Therefore, generally, the shot blasting chamber 5 is equipped with dust removal equipment. Generally, the air extraction method is used to maintain a negative pressure state inside the shot blasting chamber 5. Generally, devices such as a cyclone dust collector and a bag dust collector are equipped on the pipeline of the air extraction device to make the gas discharged by the air extraction fan meet the environmental protection emission standards.

[0038] The speed at which the shot materials are ejected from the outlet of the shot blasting machine 7 is generally between 60 and 200 m / s, which is very fast. When the shot materials hit, for example, the wind power main shaft 1, reflection will occur. Since the outer contour of the wind power main shaft 1 is generally a cylindrical surface, the reflection direction of the shot materials is disorderly, and the shot materials are also easily embedded between the support wheel assembly and the outer surface of the wind power main shaft 1, which may cause scratches on the outer surface of the wind power main shaft 1 or damage to the support wheels on the support wheel assembly. Little consideration has been given to this in the prior art.

[0039] More importantly, as mentioned above, since the center of gravity of the wind power main shaft 1 is closer to the end where its flange is located, and the diameter of its flange is usually much larger than the shaft diameter of the shaft body of the wind power main shaft 1, the flange of the wind power main shaft 1 usually protrudes at the front end of the trolley and is not directly supported on the frame 15 of the trolley, resulting in unstable transportation of the trolley.

[0040] A shot blasting and cleaning conveyor for a wind power main shaft according to an embodiment of the present invention, the trolley thereof includes a frame 15 and a sub-frame installed at the front end of the frame 15 for specifically supporting the flange of the wind power main shaft 1.

[0041] In addition, as a trolley that can operate, it should be equipped with a running system for driving the frame. The running system is generally an essential component of a vehicle. However, for a trolley, its drive may be a drive part installed on the trolley or an external drive part. For example, the trolley is towed using a towing rope.

[0042] In Figure 2 and Figure 4 In the exemplified structure, the trolley is self-powered. In the figure, the trolley has four wheels. If the wheels are track wheels, they are used to cooperate with the aforementioned tracks. The front wheels and / or rear wheels of the wheels can be used as drive wheels.

[0043] In Figure 2 the exemplified structure, the trolley adopts a rear-wheel drive mode. Figure 2A travel driver 14 is provided at the rear of the trolley, which is generally an electric motor with a reducer. The travel driver 14 is driven by a chain drive mechanism and the wheel axle of the rear wheel.

[0044] The travel drive 14 can adopt a continuously variable speed motor to change the speed according to different shot blasting conditions, thereby having better adaptability.

[0045] In some embodiments, the trolley can also adopt front-wheel drive mode, and can also be configured as four-wheel drive mode.

[0046] It should also be noted that, as described in the background technology section, the wind turbine main shaft 1 has a very large weight, generally several tons, more than ten tons or dozens of tons. The super-large wind turbine main shaft 1 can weigh more than 100 tons. Therefore, the number of wheel axles of the trolley can be more to meet the desired load-bearing capacity.

[0047] Regarding the supporting wheel assembly, first, the configuration of the supporting wheel assembly is the same as that of the conventional supporting wheel assembly, including the top supporting wheel assembly 17 located on the frame 15 to support the shaft body of the wind turbine main shaft 1. The top supporting wheel assembly 17 is divided into two groups, specifically left and right groups, and one group is provided on each side corresponding to the left and right middle surfaces of the trolley, and the two groups of top supporting wheel assemblies 17 are symmetrically arranged with respect to the left and right middle surfaces of the trolley to ensure that the center of gravity of the wind turbine main shaft 1 falls on the left and right middle surfaces or the deviation is small.

[0048] exist Figures 2 to 4 In the illustrated structure, the top support wheel assembly 17 can also be grouped in the front-to-back direction, so that there are two groups in the front and back direction. Figure 2 As shown, one group is supported at the middle of the shaft of the wind turbine main shaft 1, and the other group is supported at the front of the wind turbine main shaft 1. The consideration is still that the center of gravity of the wind turbine main shaft 1 is closer to the flange of the wind turbine main shaft 1, so that the top support wheel assembly 17 has better support stability for the wind turbine main shaft 1. The inventor believes that the support for the wind turbine main shaft 1 requires better stability and driving reliability.

[0049] It should be known that for the shot blasting cleaning of the wind turbine main shaft 1, the traditional drive of the wind turbine main shaft 1 is generally a friction drive of its shaft body. As mentioned above, the shaft diameter of the wind turbine main shaft 1 is much smaller than the diameter of its flange. Under the condition of the same driving force, the torque generated is relatively small due to the short lever arm. If a relatively large driving force is used, the friction force of the friction drive will inevitably be greater, thereby resulting in a decrease in the service life of the corresponding drive device, and it is more likely to slip, which affects the stability of the drive.

[0050] Accordingly, in the embodiment of the present invention, in addition to the top support wheel assembly 17 , a front support wheel assembly 20 is also provided. The front support wheel assembly 20 is specifically used for supporting the flange of the wind turbine main shaft 1 .

[0051] The front support wheel assembly 20 is arranged on the auxiliary frame, and the auxiliary frame is offset downward relative to the vehicle frame 15. It should be noted that, as described above, for the conventional trolley used to transport the wind power main shaft 1, sufficient space also needs to be left downward at the front side of the vehicle frame 15. In other words, there should be enough space at the front side of the vehicle frame 15 to avoid interference between the flange and, for example, the ground. And in Figure 5 As can be seen in the illustrated structure, the front support wheel assembly 20 does not need to be arranged directly below the flange, but is arranged on both sides of the left - right middle plane of the flange. The presence of the front support wheel assembly 20 does not occupy much space in the up - down direction.

[0052] There are at least two front support wheel assemblies 20, and the two corresponding front support wheel assemblies 20 are symmetric about the left - right middle plane of the trolley. More accurately, the front support wheel assembly 20 is divided into left and right groups, and the two groups are symmetric about the left - right middle plane of the trolley, and each group has at least one front support wheel assembly 20.

[0053] Since the flange diameter of the wind power main shaft 1 is much larger than the shaft diameter of the shaft body of the wind power main shaft 1, a relatively larger span can be provided between the left and right groups of front support wheel assemblies 20, so that the support stability of the support wheel assembly for the wind power main shaft 1 is better.

[0054] Furthermore, it is also because the flange diameter of the wind power main shaft 1 is much larger than the shaft diameter of the shaft body of the wind power main shaft 1. Under this condition, more support wheel assemblies, such as four, can be arranged at the same support arc at the flange.

[0055] The shot - blasting cleaning conveyor for the wind power main shaft based on the embodiment of the present invention has more support wheel assemblies for the flange than the traditional support wheel assembly. Under this condition, the load supported by the wind power main shaft 1 can be effectively dispersed, and the support reliability for the wind power main shaft 1 is better.

[0056] At the same time, since the flange diameter is relatively large, for the front support wheel assembly 20, only a relatively small frictional force is required to obtain the same torque as that of using the top support wheel assembly 17 as the driving support wheel assembly. In other words, the driving method based on the friction pair is easier to implement and not prone to failure, and has better driving reliability.

[0057] Correspondingly, the driving of the wind power main shaft 1 is achieved by means of the friction pair formed by the friction fit between the front support wheel assembly 20 and the side surface of the flange. In other words, the front support wheel assembly 20 is the driving support wheel assembly.

[0058] The aforementioned two groups of front support wheel assemblies 20 can use the front support wheel assembly 20 on one side as the driving support wheel assembly, or all of them can be used as the driving support wheel assembly.

[0059] Correspondingly, the driving device for the front support wheel assembly 20 is preferably a driving device containing a flexible transmission member, such as a chain drive mechanism or a belt drive mechanism, to reduce the impact of starting shock on the prime mover of the driving device.

[0060] Furthermore, as Figure 4 shown, two self-rotating drivers 23 are provided on the lower front side of the vehicle frame 15, respectively for driving two groups of front support wheel assemblies 20.

[0061] The self-rotating driver 23 includes a motor and a speed reducer. The output shaft of the speed reducer has Figure 4 the driving sprocket 24 as shown in, while the front support wheel shaft 32 of the front support wheel assembly 20 is provided with a driven sprocket 36. The driving sprocket 24 and the driven sprocket 36 form a chain drive mechanism through a transmission chain.

[0062] If there are multiple front support wheel assemblies 20 on each side, for example, the output shaft of the self-rotating driver 23 can be equipped with a double sprocket or multiple sprockets for driving multiple front support wheel assemblies 20.

[0063] Driven by the driving device, the wind power main shaft 1 rotates around its own axis. Thus, under the condition that the shot blasting machine 7 is fixedly arranged, the outer surface of the wind power main shaft 1 can be fully shot blasted. If internal shot blasting is adopted, there are also requirements for the self-rotation of the wind power main shaft 1. In other words, the wind power main shaft shot blasting and cleaning conveyor based on the embodiment of the present invention is also suitable for the internal shot blasting process.

[0064] As mentioned above, since the self-weight of the wind power main shaft 1 is generally very large, therefore, when the trolley has a certain speed, the wind power main shaft 1 will have a relatively large inertia. And the trolley usually does not move forward at a constant speed, but there are speed changes. When the speed changes, an acceleration will be generated, which may cause the wind power main shaft 1 to have axial movement, and even break away from the support of the trolley and cause an accident.

[0065] In view of this, in order to ensure the stability of the support of the trolley for the wind power main shaft 1, in the embodiment of the present invention, a retaining roller 47 is further provided to form a front end limit for the wind power main shaft 1.

[0066] Specifically, the retaining roller 47 is arranged on the auxiliary frame and is located in front of the flange. In the initial stage, it can be indirectly engaged with the front end face of the flange. The retaining roller 47 can rotate as a roller shaft and has little influence on the self-rotation of the wind power main shaft 1.

[0067] The retaining roller 47 can be configured in multiple numbers. For the convenience of configuration, the retaining roller 47 mainly cooperates with the lower part of the front end face of the flange to reduce the installation difficulty of the retaining roller 47. The main consideration is that the position of the auxiliary frame itself is relatively low.

[0068] In Figure 8In the exemplary structure, the retaining roller 47 has a roller shaft body. In some embodiments, the retaining roller 47 may have multiple roller shaft bodies. Since the linear velocities at various radial positions of the flange are different, the retaining roller 47 constructed in the form of a multi-roller shaft series has a relatively small impact on the rotation of the wind power main shaft 1 under the condition of limiting the front end face of the flange.

[0069] In Figure 4 In the exemplary structure, there are four front support wheel assemblies 20, which are divided into two groups. The two front support wheel assemblies 20 within each group are symmetric about the left-right center plane of the trolley. Just looking at the center distance, the center distance between the two inner front support wheel assemblies 20 in the figure is 0.4 times that of the two outer front support wheel assemblies 20. It can be slightly larger or slightly smaller, but should not exceed 0.5 times, otherwise it will affect the layout of the front support wheel group 20.

[0070] Since the front support wheel assembly 20 is in a friction pair dynamic connection with the flange, in other words, the front support wheel assembly 20 is tangent to the flange (under the condition of not considering contact deformation), the plane determined by the axis of the front support wheel shaft 32 of the front support wheel assembly 20 and the axis of the flange is simply referred to as the radial plane. There is an included angle between the radial planes of the two front support wheel assemblies 20 that are symmetric left and right, corresponding to the central angle of the flange. For the convenience of description, this central angle is used as a parameter for description.

[0071] The aforementioned two groups of front support wheel assemblies 20 are divided into two groups, namely an inner group and an outer group. It is clearly shown in Figure 4 Among them, the first central angle of the wind power main shaft 1 corresponding to the front support wheel assemblies 20 in the outer group is greater than the second central angle of the wind power main shaft 1 corresponding to the front support wheel assemblies 20 in the inner group, and the first central angle is also greater than the central angle of the wind power main shaft 1 corresponding to the corresponding left and right top support wheel assemblies in the top support wheel assembly 17.

[0072] In Figure 3 In the exemplary structure, the second central angle between the pair of inner front support assemblies 20 is approximately equal to the central angle of the wind power main shaft 1 corresponding to the corresponding left and right top support wheel assemblies in the top support wheel assembly 17.

[0073] Given that there are a wide variety of wind power main shafts 1 and there are relatively large differences in individual sizes, if the positions of the top support wheel assembly 17 and the front support wheel assembly 20 are both fixed, for wind power main shafts 1 of different sizes, the support wheel group that may be suitable for one wind power main shaft 1 can keep its axis horizontal, but for the support wheel groups of other sizes of wind power main shafts 1, it is impossible to keep their axes horizontal. Under this condition, at least one of the top support wheel assembly 17 and the front support wheel assembly 20 can be adjusted in position to ensure that the axis of the supported wind power main shaft 1 is horizontal.

[0074] Since the top support wheel assembly 17 is located above the vehicle frame 15, its adjustment is relatively easy. If the distance between the support wheel assemblies 17 needs to be adjusted, it is also preferably adjustable between the left and right top support wheel assemblies, with a low adjustment difficulty.

[0075] Preferably, the structure for adjusting the distance between the corresponding left and right top support wheel assemblies is that the top support wheel assembly 17 is installed on the left and right guide rails and is equipped with a locking mechanism or structure to lock it after the top support wheel assembly 17 is adjusted in place.

[0076] The aforementioned left and right guide rails are guide rails arranged in the left and right directions, that is, transverse guide rails. Using guide rails for adjustment helps to achieve stepless adjustment. Regarding the locking of the top support wheel assembly 17, a mechanical handle plate can be used for locking, for example.

[0077] In some embodiments, the top support wheel assembly 17 can also be locked on the transverse guide rail using set screws. For example, the top support wheel assembly 17 forms a sliding seat running on the transverse guide rail for position adjustment. The sliding seat is provided with a vertical threaded hole. After the adjustment is in place, the set screw cooperating with the vertical threaded hole is tightened with the vehicle frame 15 to lock the sliding seat.

[0078] Correspondingly, the distance between the front support wheel assemblies 20 is adjustable to adapt to different flanges. For the adjustment method, refer to the method of adjusting the distance between the top support wheel assemblies 17 described above, which will not be elaborated here.

[0079] As pointed out above, since the shot is flying disorderly during the shot blasting process, it is very easy for some shot to enter the wedge-shaped space formed between the front support wheel of the front support wheel assembly 17 and the side surface of the flange, and intervene between the front support wheel and the wind power main shaft 1 as the front support wheel rotates, which may cause surface damage to the wind power main shaft 1 or damage to the front support wheel.

[0080] In Figure 2 and Figure 3 In the illustrated structure, the front support wheel assembly 20 includes a front support wheel 33 and a front shield that shields the front support wheel 33 from the outside. The front shield contains a flexible plate for cooperating with the outer contour of the wind power main shaft 1 and shielding the front support wheel 33 at the upper part of the front shield to prevent shot from entering the wedge-shaped space between the front support wheel 33 and the wind power main shaft 1. Obviously, the part where the wind power main shaft 1 cooperates with the front support wheel 33 is the aforementioned flange.

[0081] In addition, in Figure 2 and Figure 3 In the illustrated structure, the top support wheel assembly 17 is equipped with a top support wheel assembly shield 18 that protects the fixed support wheel assembly 17 from the outside. Among them Figure 9 The structure shown is the structural configuration of the top support wheel assembly shield 18, and this configuration also applies to the aforementioned shield for shielding the front support wheel 33 from the outside.

[0082] from Figure 9 It can be seen that the top support wheel assembly shield 18 protects the top support wheel assembly 17 from the side facing away from the wind turbine main shaft 1 and is a semi-enclosed structure, while the side facing the wind turbine main shaft 1 needs to ensure that the front support wheel 33 can engage with the wind turbine main shaft 1.

[0083] Specifically, Figure 9 In the figure, a horizontal fixing plate 51 is included for connecting the top support wheel assembly 18 to the frame 15, for example, by using bolts. Considering the adjustability of the top support wheel assembly 17 in some embodiments, the top support wheel assembly shield 18 can be fixed on the base of the top support wheel assembly 17 to facilitate synchronous adjustment.

[0084] Furthermore, a vertical plate 52 is provided on the side of the fixing plate 51 facing away from the wind turbine shaft 1, and a sealing plate 54 is installed obliquely upward on the top of the vertical plate 52. The sealing plate 54 extends toward the side where the wind turbine shaft 1 is located, and a polyurethane sealing plate 56 is fixed to the end of the sealing plate 54, which is equivalent to a pressure plate 55 by means of screws 57 or rivets, wherein the polyurethane sealing plate 56 can be engaged with the wind turbine main shaft 1 to protect the top support wheel assembly 17.

[0085] Figure 9 The structure shown in FIG. 1 further includes a reinforcing plate 53 to improve the overall structural strength. The wall plate may also be an end plate to protect the fixed support wheels 38 at the front and rear sides.

[0086] Regarding the front shield, you can refer to the aforementioned configuration of the top support wheel assembly shield 18, which will not be repeated here.

[0087] In addition, the support wheels used in the top support wheel assembly 17 and the front support wheel assembly 20 are both rubber-coated friction wheels.

Claims

1. A shot blasting and cleaning conveyor for a wind power main shaft, characterized in that, Comprising: A trolley, which has a frame and a sub-frame located at the front end of the frame, and a running system for driving the frame; Top support wheel assemblies, which are arranged on the frame, and one set is provided on each side of the left and right middle planes of the trolley for supporting the shaft body of the wind power main shaft; Front support wheel assemblies, which are arranged on the sub-frame, and there are at least two front support wheel assemblies. The two corresponding support wheel assemblies are symmetrical about the left and right middle planes of the trolley and support the flange of the wind power main shaft to form a friction pair; A driving device for driving the front support wheel assemblies to rotate and driving the wind power main shaft to rotate through the friction pair; And A stop roller, which is arranged on the sub-frame and is located on the front side of the flange, and constitutes a front side limiting device of the wind power main shaft on the trolley.

2. The shot blasting cleaning conveyor for a wind power main shaft according to claim 1, wherein, There are four front support wheel assemblies, which are divided into two groups. The two front support wheel assemblies within the group are symmetrical about the left and right middle planes of the trolley; The first central angle of the wind power main shaft corresponding to the front support wheel assemblies in one of the groups is greater than the second central angle of the wind power main shaft corresponding to the front support wheel assemblies in the other group, and the first central angle is greater than the central angle of the wind power main shaft corresponding to the left and right top support wheel assemblies in the top support wheel assemblies.

3. The shot blasting cleaning conveyor for a wind power main shaft according to claim 2, wherein The distance between the corresponding left and right top support wheel assemblies is adjustable.

4. The shot blasting cleaning conveyor for a wind power main shaft according to claim 3, characterized in that, The structure for the adjustable distance between the corresponding left and right top support wheel assemblies is that the top support wheel assemblies are installed on the left and right guide rails and are equipped with a locking mechanism or structure to lock after the top support wheel assemblies are adjusted in place.

5. The shot blasting cleaning conveyor for a wind power main shaft according to any one of claims 2 to 4, characterized in that, The distance between the front support wheel assemblies is adjustable to adapt to different flanges.

6. The shot blasting cleaning conveyor for a wind power main shaft according to claim 1, characterized in that, The axis of the stop roller is a horizontal axis or a vertical axis. The number of stop rollers is an even number and is arranged in the lower half of the flange; The even number of stop rollers is divided into two equal groups, and the two groups of stop rollers are symmetrical about the left and right middle planes of the trolley.

7. The shot blasting and cleaning conveyor for a wind power main shaft according to claim 1, wherein, The front support wheel assembly includes a front support wheel and a front shield that shields the front support wheel from the outside. The front shield contains a flexible plate for cooperating with the outer contour of the wind power main shaft and shielding the front support wheel at the upper part of the front shield to prevent projectiles from entering the wedge-shaped space between the front support wheel and the wind power main shaft; The top support wheel assembly includes a top support wheel shaft and a top shield that shields the fixed support wheel from the outside. The top shield contains a flexible plate for cooperating with the outer contour of the wind power main shaft and shielding the top support wheel at the upper part of the fixed shield to prevent projectiles from entering the wedge-shaped space between the fixed support wheel and the wind power main shaft.

8. The shot blasting cleaning conveyor for a wind power main shaft according to claim 1, wherein The power machine of the running system of the trolley is a stepless speed regulation motor.

9. The shot blasting cleaning conveyor for a wind power main shaft according to claim 1, wherein, The support wheels used in the top support wheel assemblies and the front support wheel assemblies are all rubber-coated friction wheels.

10. A shot blasting line, characterized in that, Including the wind power main shaft shot blasting and cleaning conveyor according to any one of claims 1 to 9 and the guide rail on which the trolley for the wind power main shaft shot blasting and cleaning conveyor runs.

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