Rotor repair device

Abstract

The present invention provides a rotor repair device that enables efficient repair work on rotors removed from rotary centrifugal abrasive crushing machines. [Solution] The rotor repair device 1 comprises a first rotation support part 5 that rotatably supports the rotor 10, a rotation unit 7 that rotates the rotating body 7d, a torch bracket 3e that grips the welding torch T, a moving unit 3 that moves the torch bracket 3e in a straight line, and a first mounting rod 2e that can be attached to and detached from the rotation unit 7. The first rotation support part 5 supports the rotor 10 such that the rotation axis C1 of the rotor 10 is aligned with the direction of movement of the torch bracket 3e by the moving unit 3, and the tip of the welding torch T is in contact with the outer surface of the rotor 10. The first mounting rod 2e is set to attach the rotation unit 7 in a position where the rotating body 7d is in contact with the outer surface of the rotor 10 and the rotor 10 is rotated in conjunction with the rotational movement of the rotating body 7d.

Description

Technical Field

[0001] The present invention relates to a rotor repair device for repairing a rotor removed from a rotary centrifugal crushing device by arc welding for build-up welding.

Background Art

[0002] Conventionally, a rotary centrifugal crushing device for crushing materials to be crushed such as rocks and concrete blocks and adjusting the grain shape is known. For example, the rotary centrifugal crushing device disclosed in Patent Document 1 includes a device body having a supply port for supplying rocks provided on an upper wall and having a crushing chamber inside, and a substantially disk-shaped rotor having a thickness disposed in the crushing chamber. On the inner wall surface of the crushing chamber of the device body corresponding to the rotor, rocks are spread. The rotor includes a first disk portion and a second disk portion positioned at a predetermined interval in the vertical direction, and an outer peripheral wall portion connecting the outer peripheral edge portion of the first disk portion and the outer peripheral edge portion of the second disk portion. An opening is formed at the center of the first disk portion of the rotor to guide the rocks supplied through the supply port of the device body into the rotor. A plurality of projection windows are formed on the outer peripheral wall portion of the rotor at a predetermined interval in the circumferential direction. The rotor is rotationally driven about a rotation axis extending in the vertical direction by driving a drive motor disposed below the rotor, and the rocks introduced into the rotor are projected from each projection window into the crushing chamber by the centrifugal force generated by the rotation of the rotor and collide with the rocks on the inner wall surface of the crushing chamber, so that the grain shape of each rock is adjusted.

[0003] By the way, the rocks projected from the rotor into the crushing chamber of the device body through each projection window bounce back with great force when hitting the inner wall of the crushing chamber and contact the rotor. Therefore, if the crushing operation is repeated, the rotor itself will gradually be damaged, and eventually, it will be damaged or the like.

[0004] To address this, the rotor is periodically removed from the rotary centrifugal crushing device, and its outer surface is repaired by arc welding. Specifically, a large number of linear weld beads are formed along the rotational center by performing build-up welding on the outer surface of the rotor, from the outer edge of the first disc to the outer edge of the second disc, and these are arranged in the circumferential direction of the rotor. In addition, build-up welding is performed on the continuous portions between each outer edge of the first or second disc and the outer wall of the rotor to form weld beads, thereby repairing the entire rotor. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2002-18299 [Overview of the project] [Problems that the invention aims to solve]

[0006] However, because the rotor is struck by rocks while rotating in the crushing chamber of the main body of the device, it is damaged evenly across its entire surface. Therefore, attempting to repair the entire rotor by manually building up the welds is time-consuming and inefficient.

[0007] The present invention has been made in view of the above, and its objective is to provide a rotor repair device that can efficiently perform repair work on a rotor removed from a rotary centrifugal crushing device. [Means for solving the problem]

[0008] To achieve the above objective, the present invention is characterized by enabling the automatic control of the linear movement of the welding torch and the rotational movement of the rotor when performing build-up welding on the rotor.

[0009] In other words, the first invention includes a first rotational support part capable of rotatably supporting the rotor, The system has a drive motor and a rotating body that is integrally attached to the drive shaft of the drive motor, and the drive motor is connected to the drive shaft The system comprises a rotating unit for rotating a rotating body, a torch gripping part for gripping a welding torch for arc welding, a moving mechanism configured to allow the torch gripping part to move linearly in a predetermined direction, and a frame body having a detachable part to which the rotating unit can be attached and detached. The rotating unit includes a second positioning cylindrical member located away from the drive shaft and extending along the drive shaft, and the detachable portion includes a first mounting rod that extends horizontally and is round in shape and can be fitted into the second positioning cylindrical member. The first rotation support portion supports the rotor such that the rotation axis of the rotor is aligned with the direction of movement of the torch gripping portion by the moving mechanism, and the tip of the welding torch is in contact with the outer surface of the rotor. First mounting rod teeth, When the first rotation support part supports the rotor, it is fitted into the second positioning cylindrical member. The rotating body is brought into contact with the outer surface of the rotor. The rotating unit is designed to make contact with In conjunction with the rotational movement of the aforementioned rotating body The rotor Rotate Ruko It is characterized by the following.

[0010] The second invention provides a second rotating support portion that allows the rotor to rotatably support the rotor such that the rotation axis of the rotor is aligned in a direction perpendicular to the direction of movement of the torch gripping portion by the moving mechanism, and the tip of the welding torch is in contact with the outer surface of the rotor. The rotating unit includes a first positioning cylindrical member located away from the drive shaft and extending in a direction perpendicular to the drive shaft, and the detachable portion includes a second mounting rod that extends horizontally and is round in shape so as to be fitted into the first positioning cylindrical member, and the second mounting rod is fitted into the first positioning cylindrical member and brings the rotating body into contact with the outer surface of the rotor when the second rotating support portion supports the rotor. It is characterized by having this feature.

[0011] The second invention is characterized in that, in the first invention, the rotor is rotatably supported by a second rotational support portion such that the rotational axis of the rotor is aligned in a direction perpendicular to the direction of movement of the torch gripping portion by the moving mechanism, and the tip of the welding torch is in contact with the outer surface of the rotor. [Effects of the Invention]

[0012] In the first invention, when the rotor, supported by the first rotation support, is at a predetermined rotational position, the welding power supply is activated and the moving mechanism is activated to move the welding torch from one side edge to the other side edge of the rotor's outer surface, and a linear build-up weld is automatically performed at a predetermined position on the rotor's outer surface. When the welding torch reaches from one side edge to the other side edge of the rotor's outer surface, the rotation unit is activated to rotate the rotor by a predetermined angle, and the moving mechanism is activated to move the welding torch from the other side edge to the first side edge of the rotor's outer surface, and a linear build-up weld is formed next to the previously formed build-up weld. By repeating these operations of moving the welding torch using the moving mechanism and rotating the rotor using the rotation unit, the entire outer surface of the rotor can be repaired in a short time. In this way, it is no longer necessary for the operator to hold the welding torch by hand to repair the outer surface of the rotor, and the repair of the rotor's outer surface can be performed efficiently.

[0013] In the second invention, when a welding torch is placed on the outer edge of the first or second disc portion of the rotor supported by the second rotating support, the welding power supply is activated, and the rotating unit is operated to rotate the rotor, build-up welding extending in an annular shape is automatically performed on the outer edge of the first or second disc portion. In this way, repairs to areas where build-up welding is required over a long distance can be performed efficiently. [Brief explanation of the drawing]

[0014] [Figure 1] This is a front view of a rotor repair device according to an embodiment of the present invention. [Figure 2] This is a view from arrow II in Figure 1. [Figure 3] This is a diagram equivalent to Figure 1, showing the rotor in the process of being repaired. [Figure 4] This figure shows the state after Figure 3, where the frame supporting the rotating unit has been changed from the main frame to the subframe, and the rotor is being repaired. [Modes for carrying out the invention]

[0015] Hereinafter, embodiments of the present invention will be described in detail based on the drawings. Note that the following description of the preferred embodiments is merely illustrative in nature.

[0016] FIGS. 1 and 2 show a rotor repair device 1 according to an embodiment of the present invention. This rotor repair device 1 repairs a rotor 10 removed from the inside of a rotary centrifugal crushing device (not shown) by performing build-up welding by arc welding, and includes a main frame 2 in which frame members are assembled in a lattice shape.

[0017] The rotor 10 includes a first disk portion 11 and a second disk portion 12 positioned at a predetermined interval, and an outer peripheral wall portion 13 connecting the outer peripheral edge portion of the first disk portion 11 and the outer peripheral edge portion of the second disk portion 12, and crushed materials such as rocks can be introduced into the inside thereof.

[0018] An opening 11a for introducing crushed materials such as rocks into the inside when attached to a rotary centrifugal crushing device (not shown) is formed at the center of the first disk portion 11.

[0019] On the other hand, a connection hole 12a that can be connected to the drive portion of a rotary centrifugal crushing device (not shown) is formed at the center of the second disk portion 12.

[0020] A plurality of rectangular projection windows 13a are formed in the outer peripheral wall portion 13 at a predetermined interval in the circumferential direction, and each projection window 13a serves to project rocks or the like introduced into the rotor 10 when the rotary centrifugal crushing device (not shown) is operated to the outside of the rotor 10 by the centrifugal force due to the rotational movement of the rotor 10.

[0021] The main frame 2 includes a pedestal 2a having a trapezoidal shape in side view, and a support frame 2b having a vertically long rectangular frame shape provided on the upper surface of the pedestal 2a.

[0022] A rectangular mounting plate 2c is fixed to the rear side of the support frame 2b, and a horizontally extending support plate 2d is fixed to the upper front side of the mounting plate 2c.

[0023] A first mounting rod 2e (detachable part), which is round in shape, is provided on the upper part of one side in the width direction of the front of the frame 2a, extending horizontally in the front-rear direction of the frame 2a, with one end fixed to the front of the frame 2a.

[0024] The support plate 2d supports the moving unit 3 (moving mechanism). The moving unit 3 comprises a slide drive unit 3a fixed to the upper surface of the support plate 2d, a first slide rail 3b and a second slide rail 3c which are elongated rectangular rods, and a pair of fixed blocks 3d which suspend and support the second slide rail 3c on the lower surface of the support plate 2d.

[0025] The slide drive unit 3a is configured to slide the first slide rail 3b horizontally in the width direction of the frame 2a.

[0026] Both fixed blocks 3d support the second slide rail 3c so that it can slide horizontally in the width direction of the frame 2a.

[0027] The tip of the first slide rail 3b and the tip of the second slide rail 3c are connected by a torch bracket 3e (torch gripping part).

[0028] The torch bracket 3e holds the welding torch T for arc welding so that its tip points downward and its vertical position is adjustable.

[0029] A control panel 4, connected to the slide drive unit 3a, is fixed to the lower surface of the mounting plate 2c.

[0030] The control panel 4 controls the slide drive unit 3a to slide the first slide rail 3b.

[0031] When the first slide rail 3b slides, the second slide rail 3c also slides in conjunction with it via the torch bracket 3e, thereby allowing the torch bracket 3e and the welding torch T to move linearly in the width direction of the frame 2a.

[0032] A pair of first bearing portions 5a are provided on the upper surface of the frame 2a at predetermined intervals in the width direction of the frame 2a.

[0033] Both first bearing portions 5a rotatably support the first rotating shaft 5b which extends horizontally, and a first rotor fixing member 5c, which has a roughly pedestal-like shape, is provided integrally with one end of the first rotating shaft 5b for rotation.

[0034] The first rotor fixing member 5c is designed to be fixed into the connection hole 12a of the rotor 10.

[0035] In other words, the two first bearing portions 5a, the first rotating shaft 5b, and the first rotor fixing member 5c constitute the first rotating support portion 5 of the present invention, and the first rotating support portion 5 rotatably supports the rotor 10 such that the rotation axis C1 of the rotor 10 is aligned with the direction of movement of the torch bracket 3e and welding torch T by the moving unit 3, and the tip of the welding torch T is in contact with the outer surface of the rotor 10.

[0036] The rotating unit 7 comprises a rectangular plate-shaped unit plate 7a with its surface facing up and down, a drive motor 7b fixed to the upper surface of the unit plate 7a, a disc-shaped rotating body 7d that is integrally attached to the drive shaft 7c of the drive motor 7b, and a mounting frame 7e attached to the lower part of the unit plate 7a.

[0037] The drive motor 7b is connected to the control panel 4, which controls the drive motor 7b to rotate the rotating body 7d via the drive shaft 7c.

[0038] A first positioning cylindrical member 7f is attached to the front edge of the unit plate 7a so as to extend along its front edge, and a second positioning cylindrical member 7g is attached to both side edges of the unit plate 7a so as to extend along each side edge.

[0039] One of the second positioning cylindrical members 7g is designed so that the first mounting rod 2e, which is fixed to the frame 2a, can be inserted into it. When the first mounting rod 2e is inserted into the second positioning cylindrical member 7g while the first rotation support part 5 is supporting the rotor 10, the rotating body 7d can be brought into contact with the second disc portion 12 of the rotor 10.

[0040] Then, when the drive motor 7b is started and the rotating body 7d is driven to rotate, the rotor 10 rotates around the rotation axis C1 by the first rotating shaft 5b in conjunction with that rotational movement.

[0041] In other words, the first mounting rod 2e is configured to allow the rotation unit 7 to be attached and detached, and is set to be mounted in a position where the rotating body 7d is in contact with the outer surface of the rotor 10, causing the rotor 10 to rotate in conjunction with the rotational movement of the rotating body 7d.

[0042] As shown in Figure 4, the rotor repair device 1 includes a subframe 8 capable of supporting the rotor 10.

[0043] The subframe 8 is designed to be installed next to the mainframe 2 and comprises a rectangular parallelepiped base frame 8a, an annular panel 8b fixed to the upper end of the base frame 8a, a reinforcing frame 8c extending vertically and horizontally inside the base frame 8a, and casters 8d provided at the four lower corners of the base frame 8a.

[0044] The reinforcing frame 8c is provided with a pair of second bearing portions 8e at a predetermined interval in the vertical direction.

[0045] Both second bearing sections 8e rotatably support the second rotating shaft 8f, which extends in the vertical direction, and a second rotor fixing member 8g, which has a roughly pedestal-like shape, is provided integrally with the upper end of the second rotating shaft 8f for rotation.

[0046] The second rotor fixing member 8g is designed to be fixed into the connection hole 12a of the rotor 10.

[0047] In other words, the two second bearing portions 8e, the second rotating shaft 8f, and the second rotor fixing member 8g constitute the second rotating support portion 9 of the present invention, and the second rotating support portion 9 rotatably supports the rotor 10 such that the rotation axis C1 of the rotor 10 is aligned in a direction perpendicular to the direction of movement of the torch bracket 3e and welding torch T by the moving unit 3 (vertical direction), and the tip of the welding torch T is in contact with the outer surface of the rotor 10.

[0048] An extension frame 8h is provided on the side of the base frame 8a so as to extend outward, and the extension frame 8h is provided with a second mounting rod 8i (detachable part) which is round in shape and extends horizontally in a direction perpendicular to the extension direction of the extension frame 8h.

[0049] The first positioning cylindrical member 7f of the rotating unit 7 is designed to accommodate the second mounting rod 8i. When the second mounting rod 8i is inserted into the first positioning cylindrical member 7f while the second rotation support 9 is supporting the rotor 10, the rotating body 7d can be brought into contact with the second disc portion 12 of the rotor 10.

[0050] Then, when the drive motor 7b is started and the rotating body 7d is driven to rotate, the rotor 10 rotates around the rotation axis C1 by the second rotating shaft 8f in conjunction with the rotational movement.

[0051] In other words, the second mounting rod 8i is configured to allow the rotation unit 7 to be attached and detached, and is set to be mounted in a position where the rotating body 7d is in contact with the outer surface of the rotor 10, causing the rotor 10 to rotate in conjunction with the rotational movement of the rotating body 7d.

[0052] Next, the procedure for repairing the rotor 10 using the rotor repair device 1 will be described in detail.

[0053] First, the worker removes the rotor 10 to be repaired from the rotary centrifugal crushing device (not shown), and then supports the rotor 10 on the first rotation support unit 5, as shown in Figure 1.

[0054] Next, the first mounting rod 2e, which is fixed to the frame 2a, is inserted into the second positioning cylindrical member 7g of the rotating unit 7 to position the rotating unit 7 on the frame 2a. Then, the rotating body 7d of the rotating unit 7 comes into contact with the rotor 10.

[0055] Next, the operator starts the welding power supply and operates the mobile unit 3 by operating a controller (not shown). Then, as shown in Figure 3, the slide drive unit 3a is activated and the welding torch T moves from one side edge to the other side edge of the outer peripheral wall 13 of the rotor 10 at a predetermined rotational position on the outer peripheral wall 13. At this time, linear build-up welding is automatically performed at the predetermined position on the outer peripheral wall 13 of the rotor 10.

[0056] When the welding torch T reaches from one side edge to the other side edge of the outer periphery wall portion 13 of the rotor 10, the operator operates a controller (not shown) to drive the drive motor 7b of the rotation unit 7, thereby rotating the rotating body 7d by a predetermined angle and thus rotating the rotor 10 by a predetermined angle. Then, the operator continues to operate the movement unit 3 to move the welding torch T from the other side edge to the one side edge of the outer periphery wall portion 13. As a result, a linear build-up weld is formed next to the build-up weld that was formed earlier. By repeating these operations of moving the welding torch T by the movement unit 3 and rotating the rotor 10 by the rotation unit 7, the repair of the target area on the outer periphery wall portion 13 of the rotor 10 is carried out sequentially.

[0057] Once the repair of the area to be repaired on the outer peripheral wall portion 13 of the rotor 10 is complete, the worker operates a controller (not shown) to activate the mobile unit 3 and position the welding torch T on the continuous portion between the first disc portion 11 and the outer peripheral wall portion 13.

[0058] Subsequently, the operator operates a controller (not shown) to drive the drive motor 7b of the rotating unit 7, causing the rotating body 7d to rotate continuously, thereby causing the rotor 10 to rotate continuously. As a result, build-up welding is formed on the continuous portion between the first disc portion 11 and the outer peripheral wall portion 13. Build-up welding is formed in the same manner on the continuous portion between the second disc portion 12 and the outer peripheral wall portion 13.

[0059] Subsequently, as shown in Figure 4, the worker places the subframe 8 next to the mainframe 2, removes the rotor 10 from the first rotation support 5, and places it on the second rotation support 9.

[0060] Next, the rotating unit 7 is removed from the first mounting rod 2e fixed to the frame 2a, and then the second mounting rod 8i of the extension frame 8h is fitted onto the first positioning cylindrical member 7f of the rotating unit 7 to attach the rotating unit 7 to the subframe 8. At this point, the rotating body 7d of the rotating unit 7 comes into contact with the rotor 10.

[0061] Next, the operator operates a controller (not shown) to activate the moving unit 3 and position the welding torch T on the outer edge of the first disc portion 11 of the rotor 10, which is supported by the second rotation support portion 9.

[0062] Subsequently, the operator starts the welding power supply and operates a controller (not shown) to drive the drive motor 7b of the rotating unit 7, thereby continuously rotating the rotor 10 by continuously rotating the rotating body 7d. As a result, build-up welding is formed on the outer peripheral edge of the first disc portion 11. Furthermore, if the rotor 10 is supported by the second rotating support portion 9 so that the second disc portion 12 faces upward, build-up welding can be formed on the outer peripheral edge of the second disc portion 12, similar to the outer peripheral edge of the first disc portion 11.

[0063] As described above, according to the embodiment of the present invention, by repeatedly moving the welding torch T with the moving unit 3 and rotating the rotor 10 with the rotating unit 7, the entire outer circumferential wall portion 13 of the rotor 10 can be repaired in a short time. Therefore, it is no longer necessary for the worker to hold the welding torch T by hand to repair the outer circumferential wall portion 13 of the rotor 10, and the repair of the outer circumferential wall portion 13 of the rotor 10 can be performed efficiently.

[0064] Furthermore, when a welding torch T is placed on the outer edge of the first disc portion 11 or the second disc portion 12 of the rotor 10, which is supported by the second rotation support portion 9, and the welding power supply is activated, and the rotation unit 7 is operated to rotate the rotor 10, build-up welding extending in an annular shape is automatically performed on the outer edge of the first disc portion 11 or the second disc portion 12. In this way, repairs to areas where build-up welding is required over a long distance can be performed efficiently. [Industrial applicability]

[0065] The present invention is suitable for a rotor repair device that repairs a rotor removed from a rotary centrifugal crushing device by performing build-up welding using arc welding. [Explanation of Symbols]

[0066] 1…Rotor repair device 2…Main frame (frame body) 2a…Stand 2b…Support frame 2c…Mounting plate 2d…Support plate 2e…First mounting rod (detachable part) 3…Movement unit (movement mechanism) 3a…Slide drive unit 3b…First slide rail 3c…Second slide rail 3d…Fixing block 3e…Torch bracket (torch gripping part) 4…Control panel 5…First rotation support unit 5a…First bearing unit 5b…First rotating shaft 5c…First rotor fixing member 7…Rotation unit 7a…Unit plate 7b…Drive motor 7c…Drive shaft 7d…Rotating body 7e…Mounting frame 7f…First positioning cylindrical member 7g…Second positioning cylindrical member 8…Subframe (frame body) 8a…Base frame 8b…Annular panel 8c…Reinforcement frame 8d…Caster 8e…Second bearing unit 8f…Second rotating shaft 8g…Second rotor fixing member 8h…Extension frame 8i…Second mounting rod (detachable part) 9…Second rotating support part 10…Rotor 11…First disc part 11a…Opening 12…Second disc part 12a…Connecting hole 13…Outer peripheral wall part 13a…Projection window C1…Rotation axis T…Welding torch

Claims

1. A rotor repair device for repairing a rotor removed from a rotary centrifugal crushing device by building up the material using arc welding, A first rotation support unit capable of rotatably supporting the rotor, A rotating unit comprising a drive motor and a rotating body integrally attached to the drive shaft of the drive motor, wherein the drive motor rotates the rotating body via the drive shaft, A torch gripping section for gripping a welding torch for arc welding, A moving mechanism configured to allow the torch gripping portion to move linearly in a predetermined direction, The rotating unit comprises a frame body having a detachable part, The rotating unit includes a second positioning cylindrical member located away from the drive shaft and extending along the drive shaft, The detachable portion includes a first mounting rod that extends horizontally and is in the shape of a round rod that can be fitted into the second positioning cylindrical member. The first rotation support portion supports the rotor such that the rotation axis of the rotor is aligned with the direction of movement of the torch gripping portion by the moving mechanism, and the tip of the welding torch is in contact with the outer surface of the rotor. The first mounting rod is inserted into the second positioning cylindrical member and, when the first rotation support portion supports the rotor, brings the rotating body into contact with the outer surface of the rotor. The rotor repair device is characterized in that the rotating unit rotates the rotor in conjunction with the rotational movement of the rotating body it is in contact with.

2. In the rotor repair device according to claim 1, The rotor is provided with a second rotating support portion that allows the rotor to rotate freely such that the rotation axis of the rotor is aligned in a direction perpendicular to the direction of movement of the torch gripping portion by the moving mechanism, and the tip of the welding torch is in contact with the outer surface of the rotor. The rotating unit includes a first positioning cylindrical member located away from the drive shaft and extending in a direction perpendicular to the drive shaft, The detachable portion includes a second mounting rod that extends horizontally and is in the shape of a round rod that can be fitted into the first positioning cylindrical member. The rotor repair device is characterized in that the second mounting rod is inserted into the first positioning cylindrical member and brings the rotating body into contact with the outer surface of the rotor when the second rotation support portion supports the rotor.

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