Cutting device for bearing of wind power main shaft

Abstract

The invention provides a cutting device for a bearing of a wind power main shaft. The cutting device for the bearing of the wind power main shaft comprises a shell; the circular saw blade is arranged on the shell; the cutting driving mechanism is arranged on the shell and is used for driving the circular saw blade to rotate; the feeding mechanism is arranged on the shell and is used for driving the cutting driving mechanism to drive the circular saw blade to advance and retreat on a rotating plane; the vertical stroke mechanism is arranged on the shell and is used for driving the feeding mechanism to drive the circular saw blade to move in the vertical direction; according to the cutting device for the bearing of the wind power main shaft, the bearing can be cut in a saw cutting mode, fire operation is avoided, and the adverse effect of high temperature on the performance of a main shaft body is avoided.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of wind power main shaft maintenance, and particularly relates to a cutting device for bearings of a wind power main shaft. BACKGROUND

[0002] In the wind power generation industry, the main shaft assembly of the transmission chain of a wind turbine is a core component for ensuring stable operation of the wind turbine. The main shaft assembly is prone to failure under long-term outdoor working conditions and needs to be returned to the factory for maintenance. The key link in the maintenance and disassembly is to handle the interference fit of the main shaft and the bearing. The overall weight of the main shaft assembly can reach several to tens of tons, and the diameter of the bearing outer ring is often more than 1 meter, so the disassembly is extremely difficult.

[0003] At present, the mainstream disassembly method for such large-size bearings in the industry is still flame cutting, that is, a high-temperature flame of several thousand degrees Celsius is generated by a welding machine and a cutting torch in cooperation with oxygen and acetylene to melt the bearing outer ring to achieve separation from the main shaft. However, this method has multiple technical defects: first, the safety risk is prominent. The high-temperature flame is easy to ignite the surrounding flammable materials (such as oil stains and packaging materials in the maintenance site) to cause fire and explosion, and the molten metal debris flying around can also cause personnel burns; second, the performance of the main shaft is damaged. After the high temperature is conducted to the main shaft body, it will cause irreversible changes in the metallographic structure of the main shaft (such as coarse grains and softened quenching layer), which will reduce the key mechanical properties such as strength and toughness, and even produce hidden cracks; third, the operation threshold is high. Flame cutting is a special fire operation, which requires the operator to have a welder qualification certificate and rich operation experience, and the flame parameters need to be accurately controlled to avoid cutting the main shaft, which not only limits the selection range of personnel, but also increases the training and management costs of enterprises.

[0004] In order to improve the above problems, the industry has tried to improve measures to optimize the flame cutting operation process, such as adding multiple layers of fireproof isolation belts, using an infrared thermometer to monitor the temperature of the main shaft in real time, and requiring two operators to monitor the operation, etc. However, such measures can only reduce the probability of safety risks, but cannot fundamentally eliminate the damage of high temperature to the performance of the main shaft, and still do not reduce the strict requirements for personnel qualifications.

[0005] Therefore, the improvement measures cannot break through the technical limitations of flame cutting, and the industry urgently needs a new disassembly device that can avoid high-temperature risks, reduce the operation threshold, and adapt to large-size bearings to solve the problems of safety, main shaft quality, and operation efficiency in the maintenance process. SUMMARY

[0006] In order to solve the above technical problems in the prior art, the present application provides a cutting device for bearings of a wind power main shaft. The cutting device for bearings of a wind power main shaft can cut the bearings in a sawing manner, avoid fire operation, and avoid the adverse effects of high temperature on the performance of the main shaft body.

[0007] The application provides a cutting device for bearings of a wind power main shaft, comprising: a housing, a circular saw blade arranged on the housing, a cutting driving mechanism arranged on the housing and used for driving the circular saw blade to rotate, a work feeding mechanism arranged on the housing and used for driving the cutting driving mechanism to drive the circular saw blade to advance and retreat on a rotating plane, a vertical stroke mechanism arranged on the housing and used for driving the work feeding mechanism to drive the circular saw blade to move vertically, a clamping mechanism arranged on the housing and used for clamping the bearings of the wind power main shaft.

[0008] In an embodiment, the vertical stroke mechanism comprises: a stroke oil cylinder, a cylinder body of the stroke oil cylinder is fixedly connected with the housing, a first tooling, the first tooling is configured as a frame matching the shape of the housing, the first tooling is arranged in the housing and is vertically slidably connected with the housing, and the first tooling is fixed to an output shaft of the stroke oil cylinder, wherein the work feeding mechanism is arranged on the first tooling.

[0009] In an embodiment, the work feeding mechanism comprises: a servo motor, a cylinder body of the servo motor is fixed with the first tooling, a lead screw shaft, one end of the lead screw shaft is connected with an output shaft of the servo motor, a nut, the nut is sleeved on an outer wall of the lead screw shaft and is threadedly connected with the lead screw shaft, a first support seat, the first support seat is fixed to the first tooling and is threadedly connected with the other end of the lead screw shaft, wherein the cutting driving mechanism is fixed to the nut.

[0010] In an embodiment, a ball screw seat is sleeved on the outer wall of the nut, a second tooling is fixed on the ball screw seat, the second tooling is fixed to the cutting driving mechanism, a linear guide rail is arranged on the first tooling, and a sliding block is arranged on the second tooling and slidably connected with the linear guide rail.

[0011] In an embodiment, the cutting driving mechanism comprises a spiral bevel gear reducer fixed to the second tooling, and the circular saw blade is fixedly connected to an output shaft of the spiral bevel gear reducer.

[0012] In an embodiment, the clamping mechanism comprises: A fixed clamping block fixed to the shell, A clamping oil cylinder whose output shaft is distributed opposite to the fixed clamping block and is configured to move close to or away from the fixed clamping block.

[0013] In an embodiment, a plurality of legs are arranged at the lower end of the shell, and a lifting oil cylinder is arranged on each of the legs.

[0014] In an embodiment, a plurality of lifting lugs are protrudingly arranged on the outer wall of the shell.

[0015] In an embodiment, an oil mist cooler is further included, and a nozzle of the oil mist cooler is adjustably directed to the circular saw blade.

[0016] In an embodiment, a controller is included, and the controller is connected to the cutting driving mechanism, the work feeding mechanism, the vertical stroke mechanism, and the clamping mechanism.

[0017] Compared with the prior art, the cutting device has the advantages that the cutting device integrates multiple mechanisms based on the shell, has a compact overall structure and a reasonable layout, and has significant technical advantages. From the perspective of function implementation, the cutting driving mechanism drives the circular saw blade to rotate to provide stable cutting power, the work feeding mechanism can accurately control the advance and retreat of the circular saw blade in the rotation plane, and the vertical stroke mechanism drives the circular saw blade to move vertically, and the two mechanisms can flexibly adjust the cutting position and path, meet the cutting requirements of bearings of wind power shafts of different sizes, and solve the poor adaptability problem of traditional devices. The clamping mechanism can firmly fix the bearing to avoid displacement of the workpiece during cutting and ensure cutting accuracy. Compared with traditional flame cutting, the device does not require high-temperature operation, completely eliminates the risk of fire and burns, avoids changes in the metallographic structure of the main shaft caused by high temperature, ensures the secondary use value of the main shaft, and facilitates automatic operation through the controller, reduces labor costs and operation difficulty. BRIEF DESCRIPTION OF DRAWINGS

[0018] The preferred embodiments of the present application will be described in detail below with reference to the accompanying drawings, in which: Fig. 1 A perspective view of a cutting device for bearings of a wind power shaft according to an embodiment of the present application is shown; Fig. 2 A cross-sectional perspective view of a cutting device for bearings of a wind power shaft according to an embodiment of the present application is shown, in which the bearings and the main shaft are shown; Fig. 3 A front view of a cutting device for bearings of a wind power shaft according to an embodiment of the present application is shown; Fig. 4 A side view of a cutting device for bearings of a wind power shaft according to an embodiment of the present application is shown.

[0019] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale. Detailed Implementation

[0020] To make the technical solutions and advantages of the present invention clearer, exemplary embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not an exhaustive list of all embodiments. Furthermore, without conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0021] In the description of this invention, it should be noted that the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0022] In the description of this invention, the terms "first," "second," etc., used in the specification, claims, and accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented in sequences other than those illustrated or described herein.

[0023] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] Embodiments of the present invention provide a cutting device for bearings used in wind turbine main shafts. For example... Figs. 1 to 4 As shown, the cutting device for the bearing of the wind turbine main shaft includes a housing 1, a circular saw blade 2, a cutting drive mechanism, a feed mechanism, a vertical stroke mechanism, and a clamping mechanism. The housing 1 is the foundation of the cutting device, primarily serving as a support. The circular saw blade 2 is the cutting blade, mainly used for cutting the bearing 102. The cutting drive mechanism is mounted on the housing 1 and drives the circular saw blade 2 to rotate, thus performing the cutting operation. The feed mechanism is mounted on the housing 1 and drives the cutting drive mechanism, causing the circular saw blade 2 to move forward and backward in the plane of rotation, thereby completing the cutting and feed in the axial direction of the bearing 102. The vertical stroke mechanism is mounted on the housing 1 and drives the feed mechanism, which in turn drives the cutting drive mechanism to move the circular saw blade 2 vertically, thus bringing the circular saw blade 2 to the required position. The clamping mechanism is mounted on the housing 1 and is used to clamp the bearing 102 of the wind turbine main shaft 101.

[0025] It can be seen that the cutting device for the bearing of the wind power main shaft avoids using the traditional flame cutting method. The cutting device is supported by the shell 1, and the physical cutting is realized by rotating the circular saw blade 2 driven by the cutting drive mechanism. The position and cutting path of the circular saw blade 2 are precisely controlled by the working mechanism and the vertical stroke mechanism, and the large-size bearing is stably fixed by the clamping mechanism. The whole process does not require high-temperature operation. In the cutting operation, the high-temperature flame and molten debris are completely eliminated, and the risk of fire, explosion and personnel scalding is eliminated without relying on passive protection measures. Moreover, high temperature is not conducted to the main shaft, effectively avoiding the change of the metallographic structure of the main shaft and the hidden crack, and protecting the mechanical properties and secondary value. Using the cutting device, automation can be achieved, special operation qualification personnel are not required, and enterprise training and management costs are reduced. The cutting mechanism can easily adapt to the cutting needs of bearings 102 of different diameters, and has a wide range of applications.

[0026] In order to facilitate processing, the shell 1 is configured as a substantially square body. The square structure is the most easily standardized production form in industrial processing, without the need for complex special-shaped molds or processing procedures, which can greatly reduce the manufacturing difficulty of the shell 1 and improve the processing efficiency. At the same time, the square shape also provides a regular installation space for the internal cutting drive mechanism, working mechanism and other components, facilitating subsequent assembly.

[0027] Lifting lugs 11 are provided on the outer wall of the shell 1 to facilitate lifting and carrying the entire cutting device. In order to balance the load, the lifting lugs 11 can be four and distributed substantially uniformly on the outer wall of the shell 1. The four uniformly distributed lifting lugs 11 can form stable lifting stress points, avoiding the tilting and bumping of the cutting device caused by single-point or two-point lifting, which not only ensures the safety of the equipment during lifting and carrying, but also reduces the strength of manual carrying, making the displacement of the device in the maintenance site more convenient.

[0028] In addition, legs 12 are provided at the lower end of the shell 1. The legs 12 can stably support the shell 1 to, for example, the ground or a workbench. As can be easily understood, the legs 12 are four to form a quadrangular distribution for stable support of the cutting device. Lifting mechanisms 13 are provided on each leg 12 for lifting or lowering the cutting device. The lifting mechanism can be a lifting oil cylinder or a lifting air cylinder, etc. By providing the lifting mechanism 13, the overall height of the cutting device can be flexibly adjusted, and the circular saw blade 2 can be quickly adjusted to the cutting position according to the actual placement height of the wind power main shaft 101 and the bearing 102, the operation space limitation, and the outer diameter of the bearing 102, without the need for additional height adjustment or workpiece adjustment, improving the adaptability of the operation scene.

[0029] In one embodiment, the vertical stroke mechanism includes a stroke oil cylinder 31 and a first tooling 32. The cylinder body of the stroke oil cylinder 31 is fixedly connected with the shell 1. The first tooling 32 is configured as a frame matching the shape of the shell 1. The first tooling 32 is arranged in the shell 1 and is vertically slidably connected with the shell 1. For example, a linear slide rail assembly 33 is arranged between the first tooling 32 and the shell 1, which can guide the first tooling 32 to move linearly relative to the shell 1. It is easy to understand that the linear slide rail assembly 33 includes a guide rail and a sliding block matched with the guide rail, one of which is fixedly connected with the shell 1, and the other is fixedly connected with the first tooling 32. The first tooling 32 is fixed to the output shaft of the stroke oil cylinder 31 for vertical lifting movement under the driving of the output shaft of the stroke oil cylinder 31. At the same time, the work feed mechanism is arranged on the first tooling 32. The work feed mechanism is driven to move up and down by the first tooling 32, thereby driving the circular saw blade 2 to move up and down and adjusting the vertical position of the circular saw blade 2. It can be seen that the components of the vertical stroke mechanism are designed from the aspects of power stability, motion guidance and functional linkage, and efficiently realize the vertical position adjustment of the circular saw blade 2. The cylinder body of the stroke oil cylinder 31 is fixed with the shell 1, the power output of the oil cylinder is stable and controllable, and can provide continuous and uniform driving force for the lifting of the first tooling 32, avoiding the lifting jamming or position deviation of the circular saw blade 2 due to power fluctuation, and ensuring the vertical adjustment accuracy. The first tooling 32 is configured as a frame matching the shape of the shell 1 and is vertically slidably connected with the shell 1, the frame structure not only provides a stable installation foundation for the work feed mechanism, but also can be accurately guided through the sliding cooperation with the shell 1, ensuring that the first tooling 32 drives the work feed mechanism and the circular saw blade 2 to move smoothly along the vertical direction without lateral deviation. At the same time, the work feed mechanism is arranged on the first tooling 32, so that the vertical stroke mechanism can directly drive the work feed mechanism and the circular saw blade 2 without additional transmission components, which simplifies the structure, quickly responds to the lifting demand, and accurately adjusts the vertical position of the circular saw blade 2 to adapt to the cutting demand of bearings 102 of different sizes.

[0030] The work feed mechanism includes a servo motor 41, a lead screw shaft 42, a nut 43 and a first support seat 44. The cylinder body of the servo motor 41 is fixedly connected with the first tooling 32, and the output shaft thereof is connected with one end of the lead screw shaft 42. The nut 43 is sleeved on the outer wall of the lead screw shaft 42 and is threadedly connected with the lead screw shaft 42. The first support seat 44 is fixedly connected with the first tooling 32 and is threadedly connected with the other end of the lead screw shaft 42. At the same time, the cutting driving mechanism is fixedly connected with the nut 43. This structure design drives the lead screw shaft 42 to rotate through the servo motor 41, realizes the accurate linear motion of the nut 43 through the thread cooperation between the lead screw shaft 42 and the nut 43, and then drives the cutting driving mechanism to complete the feeding action, which has the characteristics of high transmission accuracy and stable operation. The support of the first support seat 44 to the other end of the lead screw shaft 42 further enhances the rigidity and operation reliability of the whole mechanism, which can effectively ensure the accuracy and stability of the cutting operation.

[0031] In addition, the first tool 32 is further provided with a second support seat 45. The second support seat 45 is fixed to the cylinder of the servo motor 41. The screw shaft 42 passes through the second support seat 45 at one end close to the servo motor 41 and is screwed with the second support seat 45. It can be seen that the second support seat 45 supports the other end of the screw shaft 42, further enhances the rigidity and operation reliability of the whole mechanism, and effectively guarantees the precision and stability of the cutting operation.

[0032] The ball screw seat 46 is sleeved on the outer wall of the nut 43. The second tool 47 is fixed on the ball screw seat 46. The second tool 47 is fixed to the cutting driving mechanism. It can be seen that during the linear motion of the nut 43 along the axial direction of the screw shaft 42, the ball screw seat 46, the second tool 47 and the cutting driving mechanism can be driven to move. This design enhances the transmission stability through multi-stage rigid connection, improves the feeding accuracy through the ball screw structure, and effectively guarantees the accuracy and continuity of the cutting operation.

[0033] The linear guide rail 48 is arranged on the first tool 32. The extension direction of the linear guide rail 48 is parallel to the axial direction of the screw shaft 42. Meanwhile, the sliding block 49 is arranged on the second tool 47. The sliding block 49 is slidably connected with the linear guide rail 48. This structure provides guidance and constraint for the movement of the second tool 47 through the precise cooperation of the linear guide rail 48 and the sliding block 49, effectively inhibits the radial runout and torsional deviation that may occur during screw transmission, and ensures that the cutting driving mechanism always moves smoothly along the preset trajectory. At the same time, the sliding fit reduces the movement resistance and reduces the load loss of the servo motor 41, and cooperates with the high-precision transmission characteristics of the ball screw to further improve the positioning accuracy and operation stability of the whole feeding mechanism, providing reliable guarantee for high-precision cutting operation.

[0034] The cutting driving mechanism contains a spiral bevel gear reducer 51. The spiral bevel gear reducer 51 is fixed to the second tool 47. In addition, the circular saw blade 2 is connected to the output shaft of the spiral bevel gear reducer 51 through the bolt 52. It can be seen that the spiral bevel gear reducer 51 has the functions of speed reduction, torque increase and reversing transmission, which can efficiently transmit power to the circular saw blade 2 and ensure the stability of the output torque during cutting. The bolt connection mode facilitates the quick replacement and maintenance of the circular saw blade 2, and cooperates with the precise movement of the second tool 47 to realize accurate control of the cutting position and depth. At the same time, the rigid support of the reducer reduces the radial vibration of the circular saw blade 2 and improves the flatness of the cutting surface, providing reliable power guarantee for high-precision cutting operation.

[0035] The side of the circular saw blade 2 away from the bolt 52 is provided with a protective cover 53 for protecting the circular saw blade 2. It is easy to understand that in the vertical direction, the cutting tooth part of the circular saw blade 2 protrudes out of the protective cover 53 for smooth cutting operation.

[0036] The clamping mechanism includes a fixed clamping block 61 fixed to the shell 1 and a clamping oil cylinder 62. In order to ensure the clamping area, a movable clamping block 63 is fixed on the output shaft of the clamping oil cylinder 62. The output shaft of the clamping oil cylinder 62 is distributed opposite to the fixed clamping block 61 and is configured to drive the movable clamping block 63 to move close to or away from the fixed clamping block 61. In use, the fixed clamping block 61 abuts against one end surface of the bearing 102, and the output shaft of the clamping oil cylinder 62 is adjusted to drive the movable clamping block 63 to move close to the fixed clamping block 61 until it abuts against the other end surface of the bearing 102, so that the fixed clamping block 61 and the movable clamping block 63 clamp the bearing 102. Conversely, the output shaft of the clamping oil cylinder 62 is adjusted to drive the movable clamping block 63 to move away from the fixed clamping block 61, so that the clamping mechanism releases the clamping of the bearing 102. It can be seen that the structure realizes automatic clamping and releasing of the workpiece through the extension and retraction action of the clamping oil cylinder 62, cooperates with the fixed clamping block 61 to form stable clamping, and can adapt to the positioning needs of workpieces of different sizes. The oil cylinder driving mode has the characteristics of large clamping force and stable output, can effectively prevent displacement or vibration of the workpiece during cutting, and ensures cutting accuracy. At the same time, the opposite distribution design makes the clamping force uniform, avoids deformation of the workpiece due to uneven stress, and improves the stability and reliability of the overall machining.

[0037] The clamping mechanism can be two groups, which are used to clamp the bearing 102 at two positions spaced apart in the circumferential direction of the bearing 102, to ensure clamping stability.

[0038] The cutting device of the present application also includes an oil mist cooler (not shown in the figure). The nozzle of the oil mist cooler is directed towards the circular saw blade 2. When the circular saw blade 2 is cutting, the oil mist cooler sprays oil mist to the saw blade cutting area. The oil mist can quickly absorb the heat generated during cutting, prevent the saw blade from overheating and wearing out; at the same time, it forms a lubricating film to reduce the friction between the saw blade and the workpiece, improves the finish of the cutting surface, prolongs the service life of the saw blade, and ensures the stability of continuous operation. The input end of the oil mist cooler needs to be correctly connected with high-pressure air and cooling lubricating oil, and the gas flow and cooling lubricating oil flow need to be adjusted reasonably, which can be foreseen by those skilled in the art, and will not be described here.

[0039] The material of the shell 1 can be metal, glass or plastic, etc. An access door 14 can be provided on the wall of the shell 1 in the feeding direction of the circular saw blade 2 for easy maintenance. In addition, an observation door 15 can be provided on the wall of the shell 1 parallel to the plane of the circular saw blade 2, which can be transparent glass or plastic provided on the shell 1. The observation door 15 can allow the operator to observe the cutting state of the circular saw blade 2 in real time. The selection of various materials can adapt to different use scenarios, the observation door 15 ensures the safety and controllability of the operation, the access door 14 reduces the difficulty of maintenance, and the overall design takes into account the practicality and convenience, improving the use experience and maintenance efficiency of the device.

[0040] The cutting device further comprises a controller. The controller is connected to the cutting driving mechanism, the work feeding mechanism, the vertical stroke mechanism and the clamping mechanism for automatic control.

[0041] The working principle of the cutting device is described in detail below. Figs. 1 to 4 The working principle of the cutting device is described in detail below.

[0042] Preparation stage. The wind turbine main shaft assembly is first disassembled, and after the outer sealing assembly and bearing seat are removed, the main shaft 101 with bearing 102 is placed horizontally on a special support. The cutting device is hoisted to the position of the outer ring of the bearing 102 to be cut by the lifting lug 11 on the outer wall of the shell 1, and the cutting device is hoisted to the position of the outer ring of the bearing 102 to be cut by the lifting lug 11 on the outer wall of the shell 1. The controller controls the lifting mechanism 13 to move, so that the lifting mechanism 13 on the supporting leg 12 drives the output shaft downward to the ground. At this time, the fixed clamping block 61 abuts to the end face of the bearing 102 to be cut. Then remove the crane and lifting chain.

[0043] Clamping stage. The controller controls the clamping oil cylinder 62 to operate, so that the output shaft moves towards the fixed clamping block 61. Until the fixed clamping block 61 and the output shaft of the clamping oil cylinder 62 clamp and fix the bearing 102 from both sides to prevent displacement during cutting.

[0044] Position adjustment stage. The controller controls the stroke oil cylinder 31 in the vertical stroke mechanism. The output shaft of the stroke oil cylinder 31 drives the first tool 32, and then drives the work feeding mechanism and the cutting driving mechanism to slide vertically along the slide in the shell 1, until the circular saw blade 2 is adjusted to a suitable position in the vertical direction from the starting cutting point of the bearing 102. In this adjustment stage, the controller can also control the servo motor 41 to move, thereby driving the lead screw shaft 42 to rotate, promoting the nut 43 to move along the circumference of the lead screw shaft 42, thereby driving the ball screw seat 46 and the second tool 47 to move, and further driving the cutting driving mechanism to move, until the circular saw blade 2 is adjusted to a suitable position in the axial direction of the bearing 102 from the starting cutting point of the bearing 102. The above is the position adjustment of the circular saw blade 2. In this stage, the position of the oil mist cooler is also adjusted, so that the nozzle is directed towards the cutting position of the circular saw blade 2.

[0045] Cutting operation stage. The rotation speed of the bevel gear reducer 51 is controlled by the controller, and then the rotation speed of the circular saw blade 2 is set, and the circular saw blade 2 is driven to rotate. The movement of the servo motor 41 is controlled by the controller, and then the working speed and cutting stroke of the circular saw blade 2 are set. The servo motor 41 of the working mechanism drives the screw shaft 42 to rotate, and the nut 43 drives the cutting driving mechanism and the circular saw blade 2 to move linearly along the linear guide rail 48 (cooperating with the slider 49 of the second tooling 47) through the ball screw seat 46 and the second tooling 47. In the cutting process, the oil mist cooler (not shown in the figure) sprays oil mist to the circular saw blade 2 synchronously, so as to realize accurate cutting of the bearing 102.

[0046] Operation ending stage. After the cutting of the bearing 102 is completed, the controller controls the circular saw blade 2 to automatically retreat to the original point of the tool. The controller can also control the oil mist cooler to return to the original point. The controller controls the clamping oil cylinder 62 to be “loose”, so as to release the fixation of the bearing 102. The controller can also control the lifting mechanism 13, and then adjust the height of the supporting leg. Finally, the cutting device is lifted away by the traveling crane, and the whole cutting process is completed.

[0047] Although the preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to the embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including all the preferred embodiments and all the changes and / or modifications falling within the scope of the present application. Changes and / or modifications made to the embodiments according to the present application should be covered within the protection scope of the present application.

Claims

1. A cutting device for bearings of a wind power main shaft, comprising: a housing, a circular saw blade arranged on the housing, a cutting drive mechanism arranged on the housing and used to drive the circular saw blade to rotate, a work feed mechanism arranged on the housing and used to drive the cutting drive mechanism to advance and retract the circular saw blade in a rotation plane, a vertical stroke mechanism arranged on the housing and used to drive the work feed mechanism to move the circular saw blade vertically, a clamping mechanism arranged on the housing and used to clamp the bearings of the wind power main shaft.

2. The cutting device for the bearing of a windmill main shaft according to claim 1, characterized in that, The vertical stroke mechanism comprises: a stroke oil cylinder, a cylinder body of the stroke oil cylinder being fixedly connected with the housing, a first tooling configured as a frame matching a shape of the housing, the first tooling being arranged in the housing and being vertically slidably connected with the housing, the first tooling being fixed to an output shaft of the stroke oil cylinder, wherein the work feed mechanism is arranged on the first tooling.

3. A cutting device for a bearing of a windmill main shaft according to claim 2, characterized in that, The work feed mechanism comprises: a servo motor, a cylinder body of the servo motor being fixed with the first tooling, a lead screw shaft, one end of the lead screw shaft being connected with an output shaft of the servo motor, a nut, the nut being sleeved on an outer wall of the lead screw shaft and being threadedly connected with the lead screw shaft, a first support seat, the first support seat being fixed to the first tooling and being threadedly connected with the other end of the lead screw shaft, wherein the cutting drive mechanism is fixed to the nut.

4. The cutting device for a bearing of a windmill main shaft according to claim 3, characterized in that, A ball screw seat is sleeved on the outer wall of the nut, a second tooling is fixed on the ball screw seat, the second tooling is fixed to the cutting drive mechanism, a linear guide rail is arranged on the first tooling, and a sliding block is arranged on the second tooling and slidably connected with the linear guide rail.

5. The cutting device for bearings of windmill main shafts according to claim 4, characterized in that, The cutting drive mechanism comprises a spiral bevel gear reducer fixed to the second tooling, and the circular saw blade is fixedly connected to an output shaft of the spiral bevel gear reducer.

6. Cutting device for bearings of windmill main shafts according to any of claims 1 to 5, characterized in that, The clamping mechanism comprises: a fixed clamping block fixed to the housing, a clamping oil cylinder, an output shaft of the clamping oil cylinder being oppositely distributed with the fixed clamping block and being configured to approach or move away from the fixed clamping block.

7. Cutting device for bearings of windmill main shafts according to any of claims 1 to 6, characterized in that, A plurality of supporting legs are arranged at a lower end of the housing, and a lifting oil cylinder is arranged on each supporting leg.

8. Cutting device for bearings of windmill main shafts according to any of claims 1 to 7, characterized in that, A plurality of lifting lugs are protrusively arranged on an outer wall of the housing.

9. Cutting device for bearings of windmill main shafts according to any of claims 1 to 8, characterized in that, An oil mist cooler is further included, a nozzle of the oil mist cooler being adjustably directed towards the circular saw blade.

10. Cutting device for bearings of windmill main shafts according to any of claims 1 to 8, characterized in that, A controller is included, the controller being connected with the cutting drive mechanism, the work feed mechanism, the vertical stroke mechanism and the clamping mechanism.

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