Automatic grinding machine for tower drum steel plate

Abstract

The invention relates to the technical field of polishing facilities, in particular to an automatic tower tube steel plate polishing machine which comprises a machine body, a tensioning mechanism for fixing a tower tube and a polishing mechanism for polishing weld joints of the tower tube. According to the automatic polishing machine for the tower tube steel plate, the tensioning mechanism is arranged to conduct internal tensioning on the welded tower tube on the motor so that the tower tube can be fixed, meanwhile, the polishing piece gets close to and makes contact with the surface of a weld joint on the inner wall of the tower tube, and then the polishing piece is pushed to move in the weld joint direction to polish the weld joint in the tower tube; and meanwhile, the welding seams on the outer wall of the tower drum are polished through the polishing mechanism, and comprehensive and fine polishing operation on the welding seams on the inner wall and the outer wall of the tower drum is ensured through dual operation.

Description

Technical Field

[0001] The invention relates to the technical field of grinding facilities, and in particular to an automatic grinding machine for tower steel plates. Background Art

[0002] As the world becomes increasingly aware of reducing carbon emissions and reliance on traditional fossil fuels, wind power generation, as a clean, renewable energy form, has developed rapidly. The tower is an important supporting structure for wind turbines, and its design, manufacturing and installation technology are directly related to the overall performance, safety and economy of the wind power generation system.

[0003] Generally, when processing wind turbine towers, multiple cylinders are spliced ​​and then welded into a group of large towers. A single cylinder is usually curled and welded at the connecting strips to make the steel coil into a round cylinder. However, the processing cycle is long and the strip welds of some cylinders are prone to rust. The rust spots need to be polished for subsequent painting.

[0004] Patent application number CN202411081960.5 discloses a rust removal device for wind turbine tower processing, comprising: a movable frame, the upper surface of the movable frame is fixedly connected to a base plate, a fixed seat is vertically installed on the upper surface of the base plate, a support frame is fixedly installed on one end of the fixed seat away from the base plate, two groups of bearing seats are fixedly installed on the upper surface of the base plate and on one side away from the fixed seat, an L-shaped frame is fixedly installed on one edge of one side of the support frame and above the bearing seat, a rotating seat is fixedly installed on both upper and lower ends of the support frame, a plug rod is installed on the inner side of the two rotating seats, and the outer walls of the two rotating seats close to the right side are fixedly connected to mounting arms. The present invention grinds the strip splicing welds of the wind turbine tower, has high grinding efficiency, and can adapt to curved surfaces, so as to better grind the areas that are not in the same plane above and below, and cool the grinding structure.

[0005] However, this patent can only grind the welds on the outer wall of the tower, but cannot grind the welds on the inner wall of the tower synchronously, thus requiring the staff to replace the grinding device, which not only increases the complexity of the operation and the labor cost, but also affects the overall grinding efficiency and the uniformity of the weld processing.

[0006] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Summary of the invention

[0007] The object of the present invention is to provide an automatic tower steel plate grinding machine which can effectively solve the above-mentioned technical problems.

[0008] In order to achieve the purpose of the present invention, the following technical scheme is adopted: An automatic tower steel plate grinding machine comprises: a machine body, a tensioning mechanism for fixing the tower, and a grinding mechanism for grinding the tower weld; The grinding assembly includes: a rotating shaft rotatably mounted on the machine body, a cylinder driving the rotating shaft to rotate, a crank fixedly mounted on the rotating shaft, a grinding wheel rotatably mounted on the crank, and a motor driving the grinding piece to rotate; the cylinder is hinged on the machine body, and a piston rod of the cylinder is hinged to the rotating shaft.

[0009] Furthermore, the tensioning mechanism includes: a main shaft fixedly connected to the machine body, a slip ring slidably installed on the main shaft, a telescopic cylinder driving the slip ring to move, an articulated rod hinged to the main shaft, and a support plate hinged to the articulated rod; the support plate is also hinged to the slip ring through a hinged plate.

[0010] Furthermore, the support plate is provided with an internal grinding component for grinding the weld inside the tower; The internal grinding assembly includes: a second motor fixedly mounted on the support plate, a threaded rod fixedly connected to the output shaft of the second motor, a mounting plate threadedly connected to the threaded rod, a grinding piece rotatably mounted on the mounting plate, and a third motor that drives the grinding piece to rotate; the mounting plate is slidably mounted on the support plate.

[0011] Furthermore, the mounting plate is also provided with a cleaning component for cleaning the weld; The cleaning assembly includes: a cleaning wheel rotatably mounted on the mounting plate, a limiting groove opened on the support plate, a gear fixedly connected to the cleaning wheel, a rack meshing with the gear, and a pre-cleaning assembly for cleaning the weld before grinding; one end of the cleaning wheel passes through the mounting plate and is slidably mounted in the limiting groove; the rack is fixedly mounted on one side of the limiting groove.

[0012] Furthermore, the pre-cleaning component includes: a cam connected to the cleaning wheel sprocket, a push rod hinged at the non-central end of the cam, and a brush hinged to the other end of the push rod; the cam is rotatably mounted on the mounting plate; the brush is slidably mounted on the mounting plate; the brush is located in front of the grinding direction of the grinding piece.

[0013] Furthermore, the mounting plate is also provided with a detection component for detecting the smoothness of the weld after grinding; The detection component includes: a guide groove opened on the support plate, a guide rod slidably installed in the guide groove, a sliding block fixedly connected to the guide rod, and a contact wheel hinged to the sliding block; an angle sensor for monitoring the angle change of the hinge point between the contact wheel and the sliding block; a movable groove is provided on the mounting plate, and the sliding block passes through the movable groove; the rotation direction of the contact wheel is perpendicular to the direction of the weld.

[0014] Furthermore, the bottom surface of the guide groove is provided with a plurality of raised sections higher than the bottom surface.

[0015] Furthermore, the support plate is divided into a supporting end and a grinding end.

[0016] Compared with the prior art, the present invention has the following beneficial effects: an automatic tower steel plate grinding machine of the present invention internally tightens the welded tower by setting a tensioning mechanism in the motor to fix the tower, and at the same time brings the grinding piece close to and contacts the weld surface of the inner wall of the tower, and then pushes the grinding piece to move along the weld direction to grind the weld inside the tower; at the same time, the grinding mechanism grinds the weld on the outer wall of the tower, and through double operations, ensures comprehensive and fine grinding of the welds on the inner and outer walls of the tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0018] Figure 1 It is a structural schematic diagram of an automatic grinding machine for tower steel plates of the present invention; Figure 2 It is a structural schematic diagram of the grinding mechanism in the present invention; Figure 3 It is a structural schematic diagram of the tensioning mechanism in the present invention; Figure 4 It is a working state diagram of the tensioning mechanism in the present invention; Figure 5 for Figure 4 A partial enlarged view of part A; Figure 6 It is a structural schematic diagram of the grinding component in the present invention; Figure 7 It is a partial enlarged view of the grinding component in the present invention; Figure 8 It is a schematic diagram of the principle of the guide groove in the present invention; Fig. 9 It is a structural schematic diagram of the support plate in the present invention.

[0019] In the figure: 1, machine body; 2, tensioning mechanism; 3, grinding mechanism; 31, rotating shaft; 32, cylinder; 33, crank; 34, grinding wheel; 35, motor 1; 21, spindle; 22, slip ring; 23, telescopic cylinder; 24, hinged rod; 25, support plate; 26, grinding assembly; 261, motor 2; 262, threaded rod; 263, mounting plate; 264, grinding piece; 265, motor 3; 266, cleaning assembly; 2661, cleaning wheel; 2662, limiting groove; 2663, gear; 2664, rack; 2665, cam; 2666, push rod; 2667, brush; 267, detection component; 2671, guide groove; 2672, guide rod; 2673, sliding block; 2674, contact wheel; 2675, movable groove; 267211, raised section; 251, supporting end; 252, grinding end; 4, tower. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are partial embodiments of the present invention, rather than all embodiments.

[0021] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention. When a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a centered component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centered component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a centered component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0022] like Figures 1 to 9 As shown, the present invention is an automatic tower steel plate grinding machine, comprising: a machine body 1, a tensioning mechanism 2 for fixing the tower 4, and a grinding mechanism 3 for grinding the welding seam of the tower 4; This device uses the tensioning mechanism 2 to tighten the welded tower 4 internally at the motor, thereby fixing the tower 4, and at the same time, brings the grinding piece 264 close to and contacts the weld surface of the inner wall of the tower 4, and then pushes the grinding piece 264 to move along the weld direction to grind the inner weld of the tower 4; at the same time, the grinding mechanism 3 grinds the weld on the outer wall of the tower 4. Through double operations, comprehensive and fine grinding of the welds on the inner and outer walls of the tower 4 is ensured.

[0023] The tensioning mechanism 2 includes: a main shaft 21 fixedly connected to the body 1, a slip ring 22 slidably mounted on the main shaft 21, a telescopic cylinder 23 driving the slip ring 22 to move, a hinge rod 24 hinged to the main shaft 21, and a support plate 25 hinged to the hinge rod 24; the support plate 25 is also hinged to the slip ring 22 through a hinge plate.

[0024] When the welded tower 4 needs to be polished, the tower 4 to be polished is mounted on the main shaft 21 by a forklift. At this time, the telescopic cylinder 23 pushes the slip ring 22 to slide on the main shaft 21, and the hinged rod 24 expands outward under the push of the slip ring 22, thereby pushing the support plate 25 to gradually approach the inner wall of the tower 4 until it abuts against the inner wall of the tower 4 to support the inner wall of the tower 4, thereby supporting and fixing the towers 4 with different inner diameters.

[0025] The grinding assembly 26 includes: a rotating shaft 31 rotatably mounted on the machine body 1, a cylinder 32 driving the rotating shaft 31 to rotate, a crank 33 fixedly mounted on the rotating shaft 31, a grinding wheel 34 rotatably mounted on the crank 33, and a motor 35 driving the grinding piece 264 to rotate; the cylinder 32 is hinged on the machine body 1, and the piston rod of the cylinder 32 is hinged to the rotating shaft 31.

[0026] After the tower 4 is supported and fixed by the support plate 25, the cylinder 32 is extended, and the shaft 31 is rotated under the push of the cylinder 32, so that the crank 33 fixedly mounted on the shaft 31 and the grinding wheel 34 rotatably mounted on the crank 33 are close to the weld on the outer wall of the tower 4, and then the motor 35 drives the grinding wheel 34 to rotate to grind the weld on the outer wall of the tower 4. At the same time, it is also suitable for towers 4 of different diameters, and the outer walls of towers 4 of different diameters can be ground.

[0027] The support plate 25 is provided with an internal grinding assembly 26 for grinding the weld inside the tower 4; the internal grinding assembly 26 comprises: a second motor 261 fixedly mounted on the support plate 25, a threaded rod 262 fixedly connected to the output shaft of the second motor 261, a mounting plate 263 threadedly connected to the threaded rod 262, a grinding piece 264 rotatably mounted on the mounting plate 263, and a third motor 265 driving the grinding piece 264 to rotate; the mounting plate 263 is slidably mounted on the support plate 25; When the support plate 25 is supported to the inner surface of the tower 4 by the telescopic cylinder 23, the motor 261 is started, and the motor 261 drives the threaded rod 262 to rotate, thereby causing the mounting plate 263 to be displaced along the axial direction of the threaded rod 262. It should be noted here that when the tower 4 is mounted on the main shaft 21, the staff can adjust the weld to be aligned with the grinding piece 264, so that when the threaded rod 262 rotates, the grinding piece 264 moves horizontally along the weld. At this time, the motor 3 265 drives the grinding piece 264 to rotate, thereby realizing that the grinding assembly 26 performs efficient and precise grinding operations on the weld.

[0028] The support plate 25 is divided into a support end 251 and a grinding end 252 (such as Fig. 9 As shown in the figure, the inner wall of the tower 4 is supported by the two supporting ends 251, the grinding end 252 carries the grinding piece 264, and the grinding piece 264 grinds the weld of the inner wall of the tower 4.

[0029] The mounting plate 263 is also provided with a cleaning assembly 266 for cleaning the weld; The cleaning assembly 266 includes: a cleaning wheel 2661 rotatably mounted on the mounting plate 263, a limiting groove 2662 provided on the support plate 25, a gear 2663 fixedly connected to the cleaning wheel 2661, a rack 2664 meshing with the gear 2663, and a pre-cleaning assembly 266 for cleaning the weld before grinding; one end of the cleaning wheel 2661 passes through the mounting plate 263 and is slidably mounted in the limiting groove 2662; the rack 2664 is fixedly mounted on one side of the limiting groove 2662; When the mounting plate 263 moves, the cleaning wheel 2661 slides in the limiting groove 2662 on the support plate 25. When the cleaning wheel 2661 slides in the limiting groove 2662, the gear 2663 rotates successively under the engagement of the rack 2664, so that the cleaning wheel 2661 rotates while the mounting plate 263 moves. As a result, the cleaning wheel 2661 can efficiently clean the weld surface immediately after completing the grinding operation on the weld, thereby significantly improving the overall quality of the grinding operation and further improving the accuracy of subsequent smoothness detection.

[0030] The pre-cleaning assembly 266 includes: a cam 2665 connected to the sprocket of the cleaning wheel 2661, a push rod 2666 hinged at the non-center end of the cam 2665, and a brush 2667 hinged to the other end of the push rod 2666; the cam 2665 is rotatably mounted on the mounting plate 263; the brush 2667 is slidably mounted on the mounting plate 263; the brush 2667 is located in front of the grinding direction of the grinding piece 264.

[0031] As the cleaning wheel 2661 rotates, the sprocket synchronously drives the cam 2665 to rotate. The rotation of the cam 2665 synchronously drives the push rod 2666 to push the brush 2667 to slide on the mounting plate 263, thereby achieving the effect of cleaning the weld back and forth. Since the brush 2667 is located at the front end of the grinding direction of the grinding piece 264, the effect of pre-cleaning the weld before grinding is achieved. It should be added here that the cleaning accuracy of the brush 2667 is different from that of the cleaning wheel 2661. The brush 2667 uses a relatively rigid material to clean the weld nodules and welding slag attached to the weld, while the cleaning wheel 2661 uses a relatively delicate and flexible material, which is mainly used to remove the fine grinding chips generated by the grinding piece 264 after the grinding process, so as to ensure the high accuracy of the subsequent smoothness detection and avoid any possible error interference.

[0032] Therefore, through the above structure, when the mounting plate 263 drives the grinding piece 264 to move along the weld for grinding, the weld nodules and welding slag before grinding can be cleaned, and the fine grinding chips generated after grinding can be cleaned to ensure the high accuracy of subsequent smoothness detection.

[0033] After the internal grinding process of the tower 4 is completed, the smoothness of the internal welds needs to be strictly inspected. Due to the small internal space of the tower 4, it is difficult to achieve effective inspection through manual visual inspection; in addition, if an inspection camera is deployed inside the tower 4, its lens is easily affected by the dust accumulated inside, which affects the inspection accuracy and reliability.

[0034] The mounting plate 263 is also provided with a detection assembly 267 for detecting the smoothness of the weld after grinding; the detection assembly 267 comprises: a guide groove 2671 provided on the support plate 25, a guide rod 2672 slidably installed in the guide groove 2671, a sliding block 2673 fixedly connected to the guide rod 2672, and a contact wheel 2674 hinged to the sliding block 2673; an angle sensor for monitoring the angle change of the hinge point between the contact wheel 2674 and the sliding block 2673; a movable groove 2675 is provided on the mounting plate 263, and the sliding block 2673 passes through the movable groove 2675; the rotation direction of the contact wheel 2674 is perpendicular to the direction of the weld; When the mounting plate 263 moves, the guide rod 2672 slides in the guide groove 2671. Since the guide groove 2671 is a wave-shaped guide groove 2671 with a small amplitude, the sliding block 2673 passes through the movable groove 2675, so that when the mounting plate 263 moves, the sliding block 2673 moves horizontally in the movable groove 2675. At this time, the contact wheel 2674 hinged on the sliding block 2673 slides back and forth on the mounting plate 263. Since the height of the contact wheel 2674 is level with the grinding piece 264, the contact wheel 2674 is The contact wheel 2674 contacts the inner wall of the tower 4. If there is a protrusion in the weld after grinding, the contact wheel 2674 is squeezed by the protrusion and rotates along the hinge point with the sliding block 2673. The rotation is detected in real time by the angle sensor. If the angle sensor detects an angle change, it is converted into an abnormal signal to the computer. The staff receives the information and controls the motor 261 to rotate in the opposite direction to perform secondary grinding on the area to meet the smoothness requirements. It should be added here that a reset spring is also provided between the contact roller and the sliding block 2673, thereby driving the contact roller to reset.

[0035] Considering that the amplitude of the wavy guide groove 2671 is designed to be approximately 1 to 2 centimeters, this size just corresponds to the width range of the weld; therefore, the sliding block 2673 that moves horizontally on the mounting plate 263 can avoid unnecessary squeezing effects between the internal curved surface of the tower 4 and the contact wheel 2674 during movement, thereby ensuring that the detection process is not disturbed by such external factors and maintaining the accuracy and stability of the detection.

[0036] The smoothness of the weld after contact grinding with the contact roller can indeed be well tested, but when moving in the direction of the weld, the contact roller has a potential risk of applying improper friction to the weld surface, which may cause secondary scratches and adversely affect the smoothness of the weld.

[0037] The lower surface of the guide groove 2671 is provided with a plurality of raised sections 267211 (such as Figure 8 As shown in the figure, when the guide rod 2672 slides along the guide groove 2671, when it passes through the raised section 267211, the guide rod 2672 will synchronously drive the sliding block 2673 and the contact wheel 2674 to approach the tower 4, thereby accurately detecting the surface finish of the weld of the tower 4. When in the non-raised section 267211, the guide rod 2672 will automatically move away from the inner wall of the tower 4 to avoid direct contact with the inside of the tower 4, thereby achieving intermittent, non-contact detection of the inner wall of the tower 4. It effectively prevents the contact wheel 2674 from causing secondary scratches on the surface of the tower 4, and significantly reduces the wear of the contact roller, ensuring the accuracy and safety of the detection process.

[0038] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0039] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. An automatic tower steel plate grinding machine, characterized in that: include: The machine body, the tensioning mechanism for fixing the tower, and the grinding mechanism for grinding the tower weld; The grinding assembly includes: a rotating shaft rotatably mounted on the machine body, a cylinder driving the rotating shaft to rotate, a crank fixedly mounted on the rotating shaft, a grinding wheel rotatably mounted on the crank, and a motor driving the grinding piece to rotate; the cylinder is hinged on the machine body, and a piston rod of the cylinder is hinged to the rotating shaft.

2. The automatic tower steel plate grinding machine according to claim 1, characterized in that: The tensioning mechanism includes: a main shaft fixedly connected to the machine body, a slip ring slidably mounted on the main shaft, a telescopic cylinder driving the slip ring to move, a hinge rod hinged to the main shaft, and a support plate hinged to the hinge rod; the support plate is also hinged to the slip ring through a hinge plate.

3. The automatic tower steel plate grinding machine according to claim 2, characterized in that: The support plate is provided with an internal grinding component for grinding the weld inside the tower; The internal grinding assembly includes: a second motor fixedly mounted on the support plate, a threaded rod fixedly connected to the output shaft of the second motor, a mounting plate threadedly connected to the threaded rod, a grinding piece rotatably mounted on the mounting plate, and a third motor that drives the grinding piece to rotate; the mounting plate is slidably mounted on the support plate.

4. The automatic tower steel plate grinding machine according to claim 3, characterized in that: The mounting plate is also provided with a cleaning component for cleaning the weld; The cleaning assembly includes: a cleaning wheel rotatably mounted on the mounting plate, a limiting groove opened on the support plate, a gear fixedly connected to the cleaning wheel, a rack meshing with the gear, and a pre-cleaning assembly for cleaning the weld before grinding; one end of the cleaning wheel passes through the mounting plate and is slidably mounted in the limiting groove; the rack is fixedly mounted on one side of the limiting groove.

5. The automatic tower steel plate grinding machine according to claim 4, characterized in that: The pre-cleaning assembly includes: a cam connected to the cleaning wheel sprocket, a push rod hinged at the non-central end of the cam, and a brush hinged to the other end of the push rod; the cam is rotatably mounted on the mounting plate; the brush is slidably mounted on the mounting plate; the brush is located in front of the grinding direction of the grinding piece.

6. The automatic tower steel plate grinding machine according to claim 2, characterized in that: The mounting plate is also provided with a detection component for detecting the smoothness of the weld after grinding; The detection component includes: a guide groove opened on the support plate, a guide rod slidably installed in the guide groove, a sliding block fixedly connected to the guide rod, and a contact wheel hinged to the sliding block; an angle sensor for monitoring the angle change of the hinge point between the contact wheel and the sliding block; a movable groove is provided on the mounting plate, and the sliding block passes through the movable groove; the rotation direction of the contact wheel is perpendicular to the direction of the weld.

7. The automatic tower steel plate grinding machine according to claim 6, characterized in that: The bottom surface of the guide groove is provided with a plurality of raised sections higher than the bottom surface.

8. The automatic tower steel plate grinding machine according to claim 2, characterized in that: The support plate is divided into a supporting end and a grinding end.

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