A welding anti-deformation tooling for a flotation machine rotor suitable for a new type of wear-resistant material

Abstract

The application discloses a kind of new wear-resistant material's flotation machine rotor welding anti-deformation tool, belong to mechanical manufacturing tool technical field;The tool includes base, support frame being set to the both sides of base, lifting assembly being set to support frame, blade clamping assembly being set to the bottom of lifting assembly and bottom plate fixing assembly being set to base;Blade clamping assembly includes top disc and concentrically fixed in the bottom of top disc fixed disc, a plurality of sets of adjusting components are evenly provided on the fixed disc along the circumference, and the opening size of each clamping notch is synchronously adjusted by driving all adjusting components to move synchronously through synchronous driving mechanism.Formation notch between adjacent two sets of adjusting components, bottom plate fixing assembly is concentrically arranged with blade clamping assembly, and is used for fixing bottom plate.The tool can adapt to the welding needs of different specifications of rotor, effectively control welding deformation, improve the forming precision of rotor.

Description

Technical Field

[0001] This invention relates to the field of mechanical manufacturing tooling technology, specifically to a welding anti-deformation tooling for flotation machine rotors made of new wear-resistant materials. Background Technology

[0002] As a core piece of equipment in the mineral processing industry, the performance of the rotor components of a flotation machine directly affects the overall efficiency and service life of the machine. The flotation machine rotor mainly consists of several blades welded to a base plate. The blades are arranged at specific circumferential angles on the base plate and are fixedly connected to the base plate by welding to form a complete rotor structure. During operation, the rotor is exposed to a highly impactful and abrasive environment containing slurry and mineral particles. Therefore, its structural strength and wear resistance are crucial for the continuous and stable operation of flotation.

[0003] Traditional flotation machine rotors typically use ordinary steel plates for the blades and chassis, welded together and then coated with a wear-resistant rubber layer to slow down wear and corrosion. However, this rubber coating is prone to wear and aging during actual use, requiring frequent shutdowns for replacement, severely impacting production continuity and operational efficiency. In recent years, advancements in materials science have spurred the application of new high-strength, wear-resistant materials. These materials can significantly improve rotor wear resistance and service life without relying on rubber coating. However, the application of these materials also places higher demands on welding processes; traditional high-temperature heat treatment methods such as flame straightening are no longer suitable due to potential impacts on material properties.

[0004] Regarding existing welding fixtures, several solutions exist for welding flotation machine rotors, but they generally suffer from insufficient versatility. Specifically: the fixtures are mostly custom-made for a single specification, requiring remanufacturing when the product changes; the clamping structure dimensions are fixed, making adjustment impossible for blades of different thicknesses; there is a lack of limiting functions for the welding position at the blade bottom, making it difficult to ensure consistent welding positions; and the clamping height is not adjustable, limiting the fixture's applicability to blades of different heights. Furthermore, the lack of effective post-weld correction methods after welding deformation places higher demands on deformation control during the welding process.

[0005] Therefore, how to design a welding fixture with good dimensional adaptability to accurately fix and limit the blades during the welding process, control welding deformation from the source, and reduce the need for post-weld correction has become a technical problem that urgently needs to be solved in the manufacturing of rotors for this type of flotation machine. Summary of the Invention

[0006] The purpose of this invention is to provide a welding anti-deformation tooling for flotation machine rotors made of new wear-resistant materials, so as to solve the shortcomings mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a welding anti-deformation fixture for flotation machine rotors made of novel wear-resistant materials, comprising: A base, with support frames provided on both sides of the base; A lifting assembly is disposed on the support frame. The lifting assembly includes a connecting frame slidably connected to the two support frames and a drive mechanism for driving the connecting frame to move up and down along the support frame. A blade clamping assembly is disposed at the bottom of the connecting frame. The blade clamping assembly includes a top plate fixedly connected to the bottom of the connecting frame and a fixed plate concentrically fixed to the bottom of the top plate. Several sets of adjusting components are evenly arranged on the fixed plate along the circumference. A clamping slot for clamping the tip of the blade is formed between two adjacent sets of adjusting components. The blade clamping assembly also includes a synchronous drive mechanism for driving all the adjusting components to move synchronously, so as to synchronously adjust the opening size of all the clamping slots. The chassis plate fixing assembly is disposed on the base and located directly below the blade clamping assembly, and is concentrically arranged with the blade clamping assembly, for fixing the flotation machine rotor chassis plate.

[0008] Preferably, the drive mechanism includes: A drive rod is rotatably mounted on the top of the two support frames. The drive rod has two symmetrically arranged threaded sections with opposite thread directions. A drive sleeve one and a drive sleeve two are respectively fitted on the two threaded sections. Driven rod one, with one end of driven rod one rotatably connected to each side of drive sleeve one, and the other end of driven rod one rotatably connected to the connecting frame; Driven rod two, one end of driven rod two is rotatably connected to both sides of drive sleeve two, and the other end of driven rod two is rotatably connected to the connecting frame; A drive wheel is fixedly connected to one end of the drive rod and is used to drive the drive rod to rotate, so that the first drive sleeve and the second drive sleeve move closer or further apart, thereby driving the connecting frame to rise and fall.

[0009] Preferably, the adjustment assembly includes a sliding frame fixedly disposed on the fixed disk and a clamping block slidably disposed on the sliding frame. The clamping block slides radially along the fixed disk, and the opposite sidewalls of two adjacent clamping blocks together form the clamping slot. The synchronous drive mechanism includes: The main rotating shaft is rotatably mounted on the connecting frame or the top plate, and a main gear is fixedly mounted at the bottom end of the main rotating shaft; The driven gear ring is rotatably mounted on the bottom end of the top plate via a slewing bearing, and the main gear meshes with the outer edge gear of the driven gear ring; A plurality of driven gears are rotatably disposed at the bottom of the top plate, and each driven gear meshes with the outer edge gear of the driven gear ring; A plurality of drive racks are fixedly mounted on each of the clamping blocks, each drive rack extends radially along the fixed disk, and each drive rack meshes with the corresponding driven gear; A driving component is mounted on the connecting frame, and the output end of the driving component is connected to the main rotating shaft for transmission.

[0010] Preferably, the drive rack is fixedly disposed on the upper surface of the clamping block, the lower half of the driven gear meshes with the drive rack, and the upper half of the driven gear meshes with the outer edge gear of the driven gear ring.

[0011] Preferably, the bottom of the clamping block is provided with a limiting component, the limiting component includes a moving rail groove and a limiting block, the moving rail groove is disposed on one side of the bottom of the clamping block, the limiting block is slidably disposed in the moving rail groove, and the side of the limiting block facing the clamping groove is parallel to the blade thickness surface, used to limit the radial position of the bottom end of the blade near the inner circle of the chassis plate.

[0012] Preferably, the chassis plate fixing assembly includes: A placement plate is rotatably mounted on the base, and the placement plate is concentrically arranged with the fixed plate, used to place the flotation machine rotor base plate; Several adjusting arms are evenly distributed along the circumference of the placement plate, and one end of each adjusting arm is rotatably disposed between the base and the placement plate; Several clamping posts are fixedly disposed at the other end of each of the adjusting arms, and each of the clamping posts extends upward; The placement tray has a number of arc-shaped slots, and the number and position of each arc-shaped slot correspond to each of the adjusting arms. Each clamping post extends through the corresponding arc-shaped slot. A rotary drive mechanism is used to drive the placement plate to rotate relative to the base, so that each of the clamping columns slides synchronously along the corresponding arc groove to clamp or release the outer edge of the chassis plate.

[0013] Preferably, the rotary drive mechanism includes: A worm gear ring is fixedly disposed on the outer edge of the placement plate; A worm gear is rotatably mounted on the base, and the worm gear meshes with the worm wheel ring; A second drive motor is mounted on the base, and the output end of the second drive motor is connected to one end of the worm gear.

[0014] Preferably, the outer edge of the top plate is fixedly provided with a side ring that protrudes downward and inward, the side ring being used to abut and press against the tip of the blade.

[0015] Preferably, the connecting frame has sliding slots at both ends, and the sliding slots at both ends are respectively engaged with the outer side of the corresponding support frame, and the connecting frame is slidably connected to the support frame through the sliding slots.

[0016] Preferably, the number of clamping slots is equal to the number of blades on the flotation machine rotor and their positions correspond one-to-one.

[0017] Compared with the prior art, the beneficial effects of the present invention are: This invention achieves synchronous radial sliding of all clamping blocks through a multi-stage gear transmission chain, ensuring consistency and synchronicity in the size changes of each clamping slot opening. Regardless of the opening adjustment, the angular position of each clamping slot remains constant, adapting to the actual circumferential angles of different rotor blade models, including those with non-uniformly distributed eccentric arrangements. The limiting block at the bottom of the clamping block moves synchronously radially with the clamping block, automatically adapting the distance between the blade bottom and the inner circle of the chassis plate to changes in blade thickness, eliminating the need for individual adjustment of the limiting position for different specifications. The bidirectional threaded drive rod, combined with the scissor-type linkage mechanism, enables precise vertical lifting and lowering adjustment of the blade clamping assembly. The self-locking characteristics of the threaded pair and the straddle-type snap-fit ​​structure ensure position locking and anti-overturning capability after adjustment. The worm gear-driven placement disc drives each clamping column to slide synchronously along the arc slot, achieving synchronous clamping of the outer edge of the chassis plate. Combined with the concentric setting of the blade clamping assembly and the chassis plate fixing assembly, the coaxiality requirements during the welding process are ensured. Through the combined effects of synchronous adjustment of the clamping slot opening, automatic adaptation of the limit block position, flexible lifting and lowering of the clamping height, and synchronous adjustment of the chassis plate clamping range, precise fixing is achieved before welding, reducing the risk of deformation from the source. Compared with traditional post-weld correction methods, this significantly improves efficiency and reduces the probability of material damage. Furthermore, it enables the use of a single tooling set to cover the welding needs of various specifications of products with different blade thicknesses, blade heights, and rotor diameters, greatly reducing tooling manufacturing and storage costs and significantly shortening product changeover time. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a perspective view of the connection position between the chassis plate and the blades of the present invention; Figure 3 This is a schematic diagram of the structure of the base and support frame in this invention; Figure 4 This is a schematic diagram of the lifting assembly in this invention; Figure 5This is a first structural schematic diagram of the blade clamping assembly in this invention; Figure 6 This is a schematic diagram of the second structure of the blade clamping assembly in this invention; Figure 7 This is a schematic diagram of the overall internal structure of the blade clamping assembly in this invention; Figure 8 This is a schematic diagram of a portion of the connection structure of the adjustment component in this invention; Figure 9 This is a schematic diagram of the first working state of the clamping slot in this invention; Figure 10 This is a schematic diagram of the second working state of the clamping slot in this invention; Figure 11 This is a schematic diagram of the synchronous drive mechanism in this invention; Figure 12 This is a schematic diagram of the limiting component in this invention; Figure 13 This is an overall structural diagram of the chassis plate fixing assembly in this invention; Figure 14 This is an exploded view of the chassis plate fixing assembly in this invention.

[0019] In the diagram: 1. Base; 2. Support frame; 3. Lifting assembly; 31. Connecting frame; 311. Sliding slot; 312. Connecting ear; 321. Drive rod; 322. Driven rod one; 323. Driven rod two; 324. Drive wheel; 325. Drive sleeve one; 326. Drive sleeve two; 4. Blade clamping assembly; 41. Top plate; 42. Fixed plate; 43. Adjusting assembly; 431. Sliding frame; 4311. Slide groove; 432. Clamping block; 4321. Slider; 433. Clamping slot; 44. Synchronous drive mechanism; 441. Main rotating shaft; 442. Main gear; 443. Driven wheel 444. Driven gear; 445. Drive rack; 446. Drive component; 45. Side ring; 46. Limiting assembly; 461. Moving rail groove; 462. Limiting block; 463. Locking screw; 5. Chassis plate fixing assembly; 51. Placement plate; 511. Fixing column; 512. Arc groove; 52. Adjusting arm; 53. Clamping column; 54. Rotary drive mechanism; 541. Worm gear ring; 542. Worm; 543. Drive motor II; 55. Fixing component; 551. Locking rod; 552. Straight groove; 553. Locking screw; 6. Chassis plate; 7. Blade; 8. Control switch. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] like Figures 1 to 14 As shown, the present invention provides a welding anti-deformation tooling for a flotation machine rotor suitable for novel wear-resistant materials, comprising a base 1, a support frame 2, a lifting assembly 3, a blade clamping assembly 4, and a chassis plate fixing assembly 5.

[0022] The base 1 is a horizontally arranged flat plate structure used to fix the entire tooling on the welding platform. The base 1 is made of high-strength steel plate, and its flatness is controlled within ±0.1mm to ensure the levelness of the tooling after assembly and the relative positional accuracy between the components. Support frames 2 are vertically fixed on both sides of the base 1. The two support frames 2 are symmetrically arranged and are fixed to the base 1 by bolts or welding. The support frames 2 are made of rectangular or I-shaped steel sections to ensure sufficient structural rigidity and bending strength, so that they are not easily deformed when bearing various loads during the blade clamping assembly and welding process.

[0023] In this embodiment, by setting support frames 2 on both sides of the base 1, the lifting component and the blade clamping component are mounted directly above the chassis plate fixing component, so that the blade clamping component and the chassis plate fixing component always maintain a concentric relationship, providing a structural basis for achieving precise alignment between the blade 7 and the chassis plate 6.

[0024] Furthermore, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the lifting assembly 3 is mounted on the support frame 2 and includes a connecting frame 31 and a drive mechanism.

[0025] The connecting frame 31 is horizontally arranged between the two support frames 2. Each end of the connecting frame 31 has a sliding groove 311. The two sliding grooves 311 are respectively engaged with the outer side wall of the corresponding support frame 2, so that the connecting frame 31 is slidably arranged on the two support frames 2 in a straddle manner. The connecting frame 31 is slidably connected to the support frame 2 through the sliding grooves 311, and can be freely raised and lowered along the height direction of the support frame 2.

[0026] Preferably, a wear-resistant liner or sliding bearing is provided between the inner wall of the sliding groove 311 and the outer wall of the support frame 2 to reduce sliding friction and improve fitting accuracy and service life; the cross-section of the sliding groove 311 is U-shaped or C-shaped, which is adapted to the rectangular or I-shaped cross-section of the support frame 2 to ensure the stability of the sliding direction and the anti-overturning ability; compared with the traditional insertion sliding structure, this straddle-type snap-fit ​​structure has a larger contact area and better guidance, which can effectively resist the lateral force and overturning moment generated during the welding process, and ensure that the connecting frame 31 always remains horizontal during the lifting process.

[0027] The drive mechanism is used to drive the connecting frame 31 to move up and down along the support frame 2. Specifically, the drive mechanism includes a drive rod 321, a driven rod 322, a driven rod 323, and a drive wheel 324.

[0028] The drive rod 321 is horizontally rotatably mounted on the top of the two support frames 2. The two ends of the drive rod 321 are rotatably connected to the top of the support frame 2 through bearings. The drive rod 321 is symmetrically provided with two threaded sections with opposite thread directions, namely a left-hand threaded section and a right-hand threaded section. Drive sleeve 1 325 and drive sleeve 2 326 are respectively fitted on the two threaded sections. The inner walls of drive sleeve 1 325 and drive sleeve 2 326 are respectively provided with internal threads that mate with the corresponding threaded sections, thereby converting the rotational motion of the drive rod 321 into the linear motion of drive sleeve 1 325 and drive sleeve 2 326 along the axial direction of the drive rod 321.

[0029] One end of the driven rod 322 is rotatably connected to both sides of the drive sleeve 325, and the other end of the driven rod 322 is rotatably connected to the connecting ear 312 in the middle of the connecting frame 31; one end of the driven rod 323 is rotatably connected to both sides of the drive sleeve 326, that is, a driven rod 323 is connected to the left and right sides of the drive sleeve 326 respectively, and the other end of the driven rod 323 is also rotatably connected to the connecting ear 312 in the middle of the connecting frame 31, and the driven rod 323 is located on both sides of the driven rod 322; that is, the driven rod 322 and the driven rod 323 are staggered on the connecting ear 312 in the middle of the connecting frame 31, and the driven rod 323 is located outside the driven rod 322, forming a scissor-fork linkage structure.

[0030] The drive wheel 324 is fixedly connected to one end of the drive rod 321, which is located on the outside of the support frame 2. The operator can drive the drive rod 321 to rotate by manually rotating the drive wheel 324. When the drive rod 321 rotates, the two threaded sections with opposite directions drive the drive sleeve 325 and the drive sleeve 326 to move closer or further apart along the axial direction of the drive rod 321. When the drive sleeve 325 and the drive sleeve 326 move closer together, the lower ends of the driven rod 322 and the driven rod 323 push the connecting frame 31 downward, that is, the connecting frame 31 descends. When the drive sleeve 325 and the drive sleeve 326 move further apart, the lower ends of the driven rod 322 and the driven rod 323 pull the connecting frame 31 upward, that is, the connecting frame 31 rises.

[0031] Preferably, the two threaded sections of the drive rod 321 are trapezoidal or rectangular threads, which have self-locking characteristics. When the drive wheel 324 stops rotating, the connecting frame 31 can be stably maintained at any adjustable height position under the self-locking action of the threaded pair. Precise positioning and locking of the blade clamping assembly height can be achieved without additional locking devices. This self-locking characteristic is particularly important for welding fixtures. The vibration and impact generated during the welding process will not cause the connecting frame 31 to slip unexpectedly, thereby ensuring the stability of the blade clamping height and the welding accuracy.

[0032] With the above-mentioned lifting components, operators can quickly and accurately adjust the blade clamping components to the appropriate working position according to the blade height of the rotor of different specifications of flotation machine, so that the tooling can adapt to the production needs of rotors of different sizes.

[0033] like Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 As shown, the blade clamping assembly 4 is located at the bottom of the connecting frame 31 and includes a top plate 41, a fixed plate 42, an adjustment assembly 43, and a synchronous drive mechanism 44.

[0034] The top plate 41 is a circular plate structure, which is horizontally fixed to the bottom center of the connecting frame 31. The top plate 41 is fixedly connected to the connecting frame 31 by bolts or welding to ensure the rigidity of the connection between the top plate 41 and the connecting frame 31.

[0035] The fixed plate 42 is a circular plate structure, concentrically fixed to the bottom of the top plate 41, and the fixed plate 42 is fixedly connected to the top plate 41; the outer diameter of the fixed plate 42 is smaller than the outer diameter of the top plate 41, so as to leave space for the side ring 45 to be set on the outer edge of the top plate 41.

[0036] In a further embodiment, a plurality of sets of adjusting components 43 are evenly arranged circumferentially on the fixed disk 42. The number of adjusting components 43 is equal to the number of blades 7 of the flotation machine rotor and their positions correspond one-to-one, typically 8 sets.

[0037] Specifically, each set of adjustment components 43 includes a sliding frame 431 and a clamping block 432. The sliding frame 431 is fixedly mounted on the upper surface of the fixed disk 42 and extends radially along the fixed disk 42. The sliding frame 431 is fixedly connected to the fixed disk 42 by bolts or welding, or is directly integrally machined. The sliding frame 431 has a sliding groove 4311, which also extends radially along the fixed disk 42. The cross-section of the sliding groove 4311 is T-shaped or dovetail-shaped to ensure the accuracy and stability of the sliding fit.

[0038] The clamping block 432 is slidably disposed on the sliding frame 431. Specifically, a slider 4321 is fixedly disposed at the bottom end of the clamping block 432. The slider 4321 is slidably disposed in the sliding groove 4311, so that the clamping block 432 can slide freely along the radial direction of the fixed plate 42. The upper surface of the clamping block 432 is a plane for cooperating with the subsequent driven gear 444.

[0039] The opposing sidewalls of two adjacent clamping blocks 432, that is, the sides of the two adjacent clamping blocks 432 facing each other, together form a clamping slot 433. The width of the clamping slot 433 is the distance between the two adjacent clamping blocks 432, and is used to accommodate and clamp the top of the flotation machine rotor blade 7.

[0040] In this embodiment, all clamping slots 433 are set on the fixed disk 42 according to the actual circumferential arrangement angle of the flotation machine rotor blades 7. It should be noted that the circumferential arrangement angle of the blades 7 on the base plate 6 may vary for different models of flotation machine rotors. Some models of blades 7 are not strictly uniformly distributed, that is, the included angle between each blade 7 is not completely radially set with or completely equal to the center, but is distributed at a specific angle according to the results of fluid dynamics optimization, that is, the so-called eccentric arrangement. The installation position of the adjustment component 43 on the fixed disk 42 is precisely set in advance according to the actual angle of the blades 7 of the target rotor. When the synchronous drive mechanism 44 drives all clamping blocks 432 to slide synchronously in the radial direction, each clamping block 432 only moves in its corresponding radial direction, and its angular position does not change. Therefore, no matter how the opening size of the clamping slots 433 is adjusted to accommodate blades 7 of different thicknesses, the angular position of each clamping slot 433 remains unchanged and is always completely consistent with the actual circumferential arrangement angle of the flotation machine rotor blades 7.

[0041] When all the clamping blocks 432 slide outward synchronously along the radial direction of the fixed disk 42, the distance between two adjacent clamping blocks 432 increases, that is, the openings of all the clamping slots 433 expand synchronously; when all the clamping blocks 432 slide inward synchronously along the radial direction of the fixed disk 42, the distance between two adjacent clamping blocks 432 decreases, that is, the openings of all the clamping slots 433 shrink synchronously.

[0042] With this structural design, the tooling can quickly adapt to the clamping requirements of blades 7 of different thicknesses, and the opening size of all clamping slots 433 remains consistent, ensuring that each blade 7 is evenly distributed and subjected to balanced force in the circumferential direction.

[0043] Furthermore, the synchronous drive mechanism 44 is used to drive all the clamping blocks 432 to slide synchronously along the radial direction of the fixed disk 42, thereby realizing the synchronous adjustment of the opening size of all the clamping slots 433.

[0044] In this embodiment, the synchronous drive mechanism 44 includes a main rotating shaft 441, a main gear 442, a driven gear ring 443, a driven gear 444, a drive rack 445, and a drive member 446.

[0045] The main rotating shaft 441 is rotatably mounted on the connecting frame 31 or the top plate 41. In this embodiment, the main rotating shaft 441 is vertically mounted, with its upper end rotatably connected to the connecting frame 31 and its lower end extending downward through the central through hole of the top plate 41 to the bottom of the top plate 41. The main rotating shaft 441 is rotatably connected to the connecting frame 31 and the top plate 41 through bearings to ensure that its rotation is flexible and its radial positioning is accurate. A main gear 442 is fixedly mounted at the bottom end of the main rotating shaft 441. The main gear 442 is fixed to the main rotating shaft 441 by a key connection or by integral molding.

[0046] The driven gear ring 443 is rotatably mounted on the bottom end of the top plate 41 via a slewing bearing, and the driven gear ring 443 and the top plate 41 are concentrically arranged. The inner ring of the slewing bearing is fixedly connected to the top plate 41, and the outer ring of the slewing bearing is fixedly connected to the driven gear ring 443, thereby allowing the driven gear ring 443 to rotate freely relative to the top plate 41. An external gear is provided on the outer edge of the driven gear ring 443, and the main gear 442 meshes with the outer edge gear of the driven gear ring 443. When the main rotating shaft 441 rotates, the main gear 442 drives the driven gear ring 443 to rotate around its central axis.

[0047] There are several driven gears 444, which are evenly distributed around the circumference of the top plate 41. The number of driven gears 444 is equal to the number of adjusting components 43 and their positions correspond one-to-one. Each driven gear 444 is rotatably mounted on the bottom of the top plate 41. The driven gears 444 are mounted on the bottom of the top plate 41 through gear shafts and bearings and can rotate freely around their respective vertical axes. Each driven gear 444 meshes with the outer edge gear of the driven gear ring 443. When the driven gear ring 443 rotates, all driven gears 444 rotate synchronously.

[0048] The number of drive racks 445 is equal to the number of driven gears 444, and each drive rack 445 is fixedly mounted on each clamping block 432. Specifically, the drive rack 445 is fixedly mounted on the upper surface of the clamping block 432 and extends radially along the fixed disk 42. Each drive rack 445 meshes with the corresponding driven gear 444.

[0049] More specifically, such as Figure 7 As shown, the lower half of the driven gear 444 meshes with the drive rack 445, and the upper half of the driven gear 444 meshes with the outer gear of the driven ring gear 443. That is, the same driven gear 444 simultaneously meshes with both the driven ring gear 443 and the drive rack 445, transmitting and converting the rotational motion of the driven ring gear 443 into the linear motion of the drive rack 445. When the driven ring gear 443 rotates, all the driven gears 444 rotate synchronously, and each driven gear 444 drives its corresponding drive rack 445 to move radially along the fixed disk 42, thereby causing each clamping block 432 to slide synchronously.

[0050] Furthermore, the driving component 446 is disposed on the connecting frame 31. In this embodiment, the driving component 446 is a drive motor, which is fixedly installed on the upper surface of the connecting frame 31. The output shaft of the drive motor is connected to the upper end of the main rotating shaft 441 through a coupling. The drive motor adopts a servo motor or a stepper motor, which can precisely control the rotation angle and speed, thereby realizing the precise adjustment of the opening size of the clamping slot 433. By controlling the rotation direction and rotation angle of the drive motor, the operator can precisely control the synchronous expansion or contraction of the openings of all clamping slots 433 to the target size.

[0051] The aforementioned synchronous drive mechanism, through a transmission chain design with one active input and all driven synchronous outputs, enables the simultaneous synchronous movement of all clamping blocks by a single power source. This ensures the consistency and synchronicity of the changes in the opening size of each clamping slot, eliminating the problem of error accumulation caused by adjusting them one by one.

[0052] like Figure 8As shown, a side ring 45 with downward and inward protrusions is fixedly provided on the outer edge of the top plate 41. The side ring 45 is an annular structure, with its upper end fixedly connected to the outer edge of the top plate 41 by bolts or welding, and its lower end extending downward and gradually inward, that is, protruding towards the center of the top plate 41.

[0053] The protruding portion of the side ring 45 abuts against and presses against the outer surface of the tip of the blade 7. When the tip of the blade 7 is inserted into the clamping slot 433, the inner surface of the side ring 45 fits against the outer surface of the tip of the blade 7, applying an inward radial restraint force to the blade 7 to prevent it from tilting or shifting outward during welding. Simultaneously, the side ring 45 also serves as an auxiliary positioning element. When the operator inserts the blade 7 into the clamping slot 433, they only need to push the tip of the blade 7 until it contacts the inner surface of the side ring 45 to ensure that the radial position of all blades 7 is consistent.

[0054] By setting the side ring 45 and combining it with the clamping slot 433 to clamp the blade 7 in the thickness direction, the tip of the blade 7 is fully constrained in both the radial and tangential directions, effectively preventing the blade 7 from shifting position and deforming during the welding process.

[0055] like Figure 11 and Figure 12 As shown, a limiting component 46 is provided at the bottom of the clamping block 432. The limiting component 46 is used to limit the radial position of the bottom end of the blade 7 near the inner circle of the chassis plate 6, ensuring that the welding position between the bottom end of the blade 7 and the chassis plate 6 is accurate.

[0056] Furthermore, the limiting component 46 includes a movable rail groove 461 and a limiting block 462. The movable rail groove 461 is disposed on one side of the bottom of the clamping block 432, that is, the side of the clamping block 432 facing the clamping slot 433, and the movable rail groove 461 extends radially along the clamping block 432; the limiting block 462 is slidably disposed in the movable rail groove 461, and the limiting block 462 can slide freely along the extension direction of the movable rail groove 461; the side of the limiting block 462 facing the clamping slot 433, that is, the working surface of the limiting block 462, is parallel to the thickness surface of the blade 7; when the blade 7 is inserted into the clamping slot 433, the working surface of the limiting block 462 contacts the side of the bottom end of the blade 7, which is used to limit the radial position of the bottom end of the blade 7 near the inner circle of the chassis plate 6.

[0057] The movable track 461 has a through hole, and a locking screw 463 is installed in the through hole. The operator can manually adjust the position of the limiting block 462 through the movable track 461. After adjustment, the position of the limiting block 462 in the movable track 461 can be locked and fixed by tightening the locking screw 463.

[0058] The working principle of the limiting component 46 is as follows: When the clamping block 432 slides outward along the radial direction of the fixed disk 42, that is, when the clamping slot 433 expands to accommodate the thicker blade 7, the limiting component 46 moves outward synchronously with the clamping block 432. At this time, the limiting block 462 also restricts the position of the bottom end of the blade 7 to move outward synchronously. Since the flotation machine rotors of different specifications are designed according to the principle of geometric similarity, when the thickness of the blade 7 increases, the distance between the bottom end of the blade 7 and the inner circle of the base plate 6 also increases accordingly. The synchronous outward movement of the limiting block 462 just adapts to this change. Conversely, when the clamping block 432 slides inward, that is, when the clamping slot 433 shrinks, the limiting block 462 moves inward synchronously to adapt to the welding positioning requirements of the smaller rotor.

[0059] With the limit component 46 moving synchronously with the clamping block 432, there is no need to adjust the limit position separately for rotors of different specifications, which greatly improves the tooling change efficiency and ensures the accuracy and consistency of the welding position at the bottom of the blade 7.

[0060] like Figure 13 and Figure 14 As shown, the chassis plate fixing assembly 5 is disposed on the base 1 and located directly below the blade clamping assembly 4. The chassis plate fixing assembly 5 and the blade clamping assembly 4 are concentrically arranged and used to fix the flotation machine rotor chassis plate 6.

[0061] Furthermore, the chassis plate fixing assembly 5 includes a placement plate 51, an adjusting arm 52, a clamping column 53, and a rotation drive mechanism 54.

[0062] The placement disk 51 is a circular disk structure, rotatably mounted on the base 1. The placement disk 51 is connected to the base 1 by a slewing bearing or a planar bearing, allowing the placement disk 51 to rotate freely relative to the base 1 around its central axis. The placement disk 51 and the fixed disk 42 are concentrically arranged to ensure the coaxiality requirement between the blade 7 and the base plate 6. The upper surface of the placement disk 51 is flat and is used to place the flotation machine rotor base plate 6.

[0063] A plurality of fixing posts 511 are fixedly provided between the base 1 and the placement plate 51. The fixing posts 511 are evenly distributed along the circumference of the placement plate 51. The bottom end of each fixing post 511 is fixedly connected to the upper surface of the base 1, and the top end of each fixing post 511 extends upward to the bottom of the placement plate 51, but does not contact the placement plate 51, so as to avoid interfering with the rotation of the placement plate 51.

[0064] The number of adjusting arms 52 is several, evenly distributed along the circumference of the placement plate 51. The number of adjusting arms 52 can be the same as or different from the number of clamping blocks 432, depending on the actual clamping requirements, and is usually three. One end of each adjusting arm 52 is rotatably mounted on the corresponding fixed post 511, that is, one end of the adjusting arm 52 is sleeved on the outer circumference of the fixed post 511 and can rotate freely around the fixed post 511.

[0065] The number of clamping posts 53 is equal to the number of adjusting arms 52. Each clamping post 53 is fixedly installed at the other end of each adjusting arm 52, that is, at the end away from the fixed post 511. Each clamping post 53 extends vertically upward to clamp the outer edge of the chassis plate 6 from the outside.

[0066] The placement tray 51 has several arc-shaped slots 512, the number and position of which correspond one-to-one with each adjusting arm 52. Each arc-shaped slot 512 is an arc-shaped through-slot extending circumferentially along the placement tray 51, and its curvature matches the movement trajectory of the clamping column 53 when the adjusting arm 52 rotates around the fixed column 511. Each clamping column 53 passes through its corresponding arc-shaped slot 512 and extends upward to the top of the placement tray 51.

[0067] Furthermore, the rotary drive mechanism 54 is used to drive the placement tray 51 to rotate relative to the base 1. When the placement tray 51 rotates, the arc groove 512 rotates accordingly, and the side wall of the arc groove 512 pushes the clamping column 53 to slide along the arc groove 512. The clamping column 53 drives the adjusting arm 52 to rotate around the fixed column 511, so that each clamping column 53 synchronously approaches or moves away from the center of the placement tray 51, thereby achieving clamping or releasing the outer edge of the chassis plate 6.

[0068] Specifically, the rotary drive mechanism 54 includes a worm gear ring 541, a worm 542, and a drive motor 543.

[0069] The worm gear ring 541 is fixedly disposed on the outer edge of the placement disk 51. The worm gear ring 541 is a ring structure with worm gear teeth on its outer circumference. The worm gear ring 541 is fixedly connected to the placement disk 51 by bolts or integrally formed, and rotates synchronously with the placement disk 51.

[0070] The worm gear 542 is rotatably mounted on the base 1, with both ends of the worm gear 542 installed on the base 1 via bearing seats, allowing it to rotate freely around its own axis. The axis of the worm gear 542 is perpendicular to the axis of the placement disk 51. The worm gear 542 meshes with the worm wheel ring 541, forming a worm gear transmission pair. The worm gear transmission has a large transmission ratio and self-locking characteristics. When the worm gear 542 stops rotating, the worm wheel ring 541 and the placement disk 51 are reliably locked and cannot rotate on their own under external force, thus ensuring the stability of the fixed position of the chassis plate 6 during the welding process.

[0071] The second drive motor 543 is mounted on the base 1. The output end of the second drive motor 543 is connected to one end of the worm gear 542 via a coupling or gear transmission. The second drive motor 543 is a servo motor or a stepper motor, which can precisely control the rotation angle of the worm gear 542, thereby achieving precise control of the clamping position of the clamping column 53.

[0072] Preferred, such as Figure 13 As shown, the chassis plate fixing assembly 5 also includes a fixing member 55. A locking rod 551 is fixedly installed at the center of the placement tray 51, and the locking rod 551 extends vertically upward. One end of the fixing member 55 has a through hole corresponding to the locking rod 551, and the fixing member 55 is sleeved on the locking rod 551 through the through hole. The other end of the fixing member 55 has a straight slot 552, and the clamping post 53 extends through the straight slot 552. The fixing member 55 is also provided with a locking screw 553, one end of which passes through the fixing member 55 and abuts against the outer wall of the clamping post 53.

[0073] After each clamping post 53 clamps the chassis plate 6, the fixing member 55 is sleeved on the locking rod 551, so that each clamping post 53 passes through the corresponding straight slot 552. Then, the locking screw 553 is tightened so that the end of the locking screw 553 abuts against the outer wall of the clamping post 53, thereby further locking the relative position of each clamping post 53. The setting of the fixing member 55 further enhances the reliability of the chassis plate 6 fixing and prevents the clamping post 53 from loosening under welding vibration.

[0074] Preferably, a control switch 8 is provided on one side of the support frame 2. The control switch 8 is electrically connected to drive motor 1 and drive motor 2 543 respectively. The operator can centrally control the start, stop, forward and reverse rotation and speed of drive motor 1 and drive motor 2 543 through the control switch 8, so as to realize the electric adjustment of the opening size of clamping slot 433 and the clamping force of chassis plate 6, thereby improving the convenience and efficiency of tooling operation.

[0075] The operation process of the tooling of the present invention will be described in detail below with reference to specific embodiments.

[0076] Example 1: Welding of standard specification flotation machine rotor This embodiment uses a standard flotation machine rotor with 8 blades and a rotor diameter of 500mm as an example for illustration.

[0077] Step 1: Tooling preparation; Based on the specifications and dimensions of the flotation machine rotor, including the number of blades 7 (8 blades), the thickness of blades 7, the inner and outer diameters of the base plate 6, etc., confirm that the number of adjustment components 43 is consistent with the number of blades 7, i.e., 8 sets, and that each component has been correctly installed and is in its initial state.

[0078] Step 2: Fixing the base plate; Place the flotation machine rotor base plate 6 at the center of the upper surface of the placement plate 51, start the second drive motor 543, drive the worm gear 542 to rotate, the worm gear 542 drives the worm wheel ring 541 and the placement plate 51 to rotate, the arc groove 512 pushes each clamping column 53 to slide inward synchronously along the arc groove 512, that is, each clamping column 53 moves towards the center of the placement plate 51 until the inner side of each clamping column 53 is tightly attached to the outer edge of the base plate 6, clamping and fixing the base plate 6 to the center of the placement plate 51. Due to the self-locking characteristic of the worm gear transmission, after the second drive motor 543 stops, the placement plate 51 is reliably locked, and the position of the base plate 6 remains stable.

[0079] Step 3: Adjustment of blade clamping slots; Based on the thickness of blade 7, start drive motor 1. Drive motor 1 drives main gear 442 to rotate via main rotating shaft 441. Main gear 442 drives driven gear ring 443 to rotate. Driven gear ring 443 drives all driven gears 444 to rotate synchronously. Each driven gear 444 drives the corresponding drive rack 445 to move radially along fixed disk 42, thereby driving each clamping block 432 to slide synchronously along sliding frame 431, so that the opening size of all clamping slots 433 is synchronously adjusted to match the thickness of blade 7. After the adjustment is completed, drive motor 1 stops. Due to the self-locking characteristic of gear transmission, the position of each clamping block 432 is locked.

[0080] Step 4: Adjusting the position of the limiting block; According to the distance requirement between the bottom end of the blade 7 and the inner circle of the chassis plate 6, loosen the locking screws 463 of each limiting component 46, slide the limiting block 462 along the moving track groove 461 to the target position, and then tighten the locking screws 463 to lock and fix the limiting block 462; Since the limiting block 462 moves synchronously with the clamping block 432, the initial position of the limiting block 462 can be universally used for different specifications of rotors in the same series; This initial position corresponds to the bottom end position of the blade 7 of the smallest specification rotor in the same series. When the clamping block 432 slides outward, the limiting block 462 moves outward synchronously with the clamping block 432, so that the radial distance between the bottom end of the blade 7 and the inner circle of the chassis plate 6 increases synchronously with the increase of the thickness of the blade 7.

[0081] Step 5: Blade clamping; Rotate the drive wheel 324, drive rod 321 rotates, drive sleeve 1 325 and drive sleeve 2 326 approach each other, and push the connecting frame 31 down along the support frame 2 through driven rod 1 322 and driven rod 2 323 until the blade clamping assembly 4 descends to the working height; Insert the top of each blade 7 into the corresponding clamping slot 433, so that the outer side of the top of the blade 7 is in contact with the inner side of the side ring 45, and the bottom of the blade 7 is in contact with the working surface of the limiting block 462; At this time, the two side walls of the clamping slot 433, that is, the opposite side walls of the two adjacent clamping blocks 432, clamp the two sides of the top of the blade 7, the side ring 45 abuts against the outer side of the top of the blade 7, and the limiting block 462 abuts against the inner side of the bottom of the blade 7, realizing the comprehensive positioning and constraint of the top and bottom of the blade 7 in multiple directions.

[0082] Step 6: Welding operation; Welding operation between blade 7 and chassis plate 6 is carried out according to the preset welding process; During the welding process, due to the firm clamping of the top of blade 7 by each clamping block 432, the radial constraint of the top of blade 7 by the side ring 45, the positioning of the bottom of blade 7 by the limiting block 462, and the reliable fixation of chassis plate fixing assembly 5 to chassis plate 6, the relative position between blade 7 and chassis plate 6 remains stable, effectively preventing circumferential and radial deformation and overall twisting of blade 7 caused by welding thermal stress.

[0083] Step 7: Disassembly; After welding, allow the rotor to cool naturally to room temperature, with a cooling rate not exceeding 50℃ / h, to avoid rapid cooling and the generation of new thermal stress; Rotate the drive wheel 324 in the opposite direction to raise the connecting frame 31 and disengage the blade clamping assembly 4 from the top of the blade 7; Loosen each clamping column 53 of the chassis plate fixing assembly 5 and remove the finished rotor after welding.

[0084] Example 2: Welding of rotors for flotation machines of different specifications like Figure 9 and Figure 10 As shown, when it is necessary to switch to a flotation machine rotor of a different specification, for example, the number of blades 7 remains 8 but the thickness of blades 7 and the rotor diameter are increased, the operation procedure is as follows: Step 1: Start drive motor 1 to make all clamping blocks 432 slide outward synchronously in the radial direction, and the opening of clamping slot 433 expands synchronously to the size that matches the thickness of the new blade 7.

[0085] Step 2: As the limiting block 462 moves outward synchronously with the clamping block 432, the distance between the bottom end of the blade 7 and the inner circle of the chassis plate 6 automatically adapts to the requirements of the new specifications, without the need for separate adjustment; if the size change of the blade 7 exceeds the adaptability range of the limiting block 462, the locking screw 463 can be loosened for fine adjustment.

[0086] Step 3: Place the new chassis plate 6 on the placement plate 51, start the drive motor 543, and all clamping columns 53 will slide synchronously to the clamping position.

[0087] Step 4: Insert blade 7 into clamping slot 433 and perform welding.

[0088] The entire changeover process only requires adjusting the opening size of the clamping slot 433 and the clamping position of the clamping column 53 on the chassis plate 6, without replacing any tooling parts, thus achieving the goal of covering multiple product specifications with one set of tooling.

[0089] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A welding anti-deformation tooling for flotation machine rotors made of novel wear-resistant materials, characterized in that, include: The base (1) has support frames (2) on both sides. The lifting assembly (3) is disposed on the support frame (2). The lifting assembly (3) includes a connecting frame (31) slidably connected to the two support frames (2) and a driving mechanism for driving the connecting frame (31) to move up and down along the support frame (2). The blade clamping assembly (4) is located at the bottom of the connecting frame (31). The blade clamping assembly (4) includes a top plate (41) fixedly connected to the bottom of the connecting frame (31) and a fixed plate (42) concentrically fixed to the bottom of the top plate (41). Several sets of adjustment components (43) are evenly arranged on the fixed plate (42) along the circumference. A clamping slot (433) for clamping the top of the blade (7) is formed between two adjacent sets of adjustment components (43). The blade clamping assembly (4) also includes a synchronous drive mechanism (44) for driving all the adjustment components (43) to move synchronously so as to synchronously adjust the opening size of all the clamping slots (433). The chassis plate fixing assembly (5) is disposed on the base (1) and located directly below the blade clamping assembly (4), and is concentrically disposed with the blade clamping assembly (4) for fixing the flotation machine rotor chassis plate (6).

2. The anti-deformation welding fixture for flotation machine rotors made of novel wear-resistant materials according to claim 1, characterized in that, The drive mechanism includes: The drive rod (321) is rotatably mounted on the top of the two support frames (2). The drive rod (321) is symmetrically provided with two threaded sections with opposite thread directions. The two threaded sections are respectively fitted with drive sleeve one (325) and drive sleeve two (326). Driven rod 1 (322), one end of driven rod 1 (325) is rotatably connected to both sides of the drive sleeve 1 (325), and the other end of driven rod 1 (322) is rotatably connected to the connecting ear (312) in the middle of the connecting frame (31); Driven rod two (323), one end of driven rod two (326) is rotatably connected to both sides of the drive sleeve two (326), and the other end of driven rod two (323) is rotatably connected to the connecting ear (312) in the middle of the connecting frame (31); The drive wheel (324) is fixedly connected to one end of the drive rod (321) and is used to drive the drive rod (321) to rotate, so that the drive sleeve one (325) and the drive sleeve two (326) move closer or further apart, thereby driving the connecting frame (31) to rise and fall.

3. The anti-deformation welding fixture for flotation machine rotors made of novel wear-resistant materials according to claim 2, characterized in that, The adjustment assembly (43) includes a sliding frame (431) fixedly mounted on the fixed disk (42) and a clamping block (432) slidably mounted on the sliding frame (431). The clamping block (432) slides radially along the fixed disk (42), and the opposite sidewalls of two adjacent clamping blocks (432) together form the clamping slot (433). The synchronous drive mechanism (44) includes: The main rotating shaft (441) is rotatably mounted on the connecting frame (31) or the top plate (41), and the bottom end of the main rotating shaft (441) is fixedly provided with a main gear (442). The driven gear ring (443) is rotatably mounted on the bottom end of the top plate (41) via a slewing bearing, and the main gear (442) meshes with the outer edge gear of the driven gear ring (443); A plurality of driven gears (444) are rotatably disposed at the bottom of the top plate (41), and each driven gear (444) meshes with the outer edge gear of the driven gear ring (443); A plurality of drive racks (445) are fixedly disposed on each of the clamping blocks (432), each of the drive racks (445) extends radially along the fixed disk (42), and each of the drive racks (445) meshes with the corresponding driven gear (444); A drive unit (446) is disposed on the connecting frame (31), and the output end of the drive unit (446) is connected to the main rotating shaft (441) for transmission.

4. The anti-deformation welding fixture for flotation machine rotors made of novel wear-resistant materials according to claim 3, characterized in that, The drive rack (445) is fixedly disposed on the upper surface of the clamping block (432), the lower half of the driven gear (444) meshes with the drive rack (445), and the upper half of the driven gear (444) meshes with the outer edge gear of the driven gear ring (443).

5. The anti-deformation welding fixture for flotation machine rotors made of novel wear-resistant materials according to claim 3, characterized in that, The bottom of the clamping block (432) is provided with a limiting component (46). The limiting component (46) includes a moving rail groove (461) and a limiting block (462). The moving rail groove (461) is located on one side of the bottom of the clamping block (432). The limiting block (462) is slidably disposed in the moving rail groove (461). The side of the limiting block (462) facing the clamping slot (433) is parallel to the thickness surface of the blade (7) and is used to limit the radial position of the bottom end of the blade (7) near the inner circle of the chassis plate (6).

6. The anti-deformation welding fixture for flotation machine rotors made of novel wear-resistant materials according to claim 1, characterized in that, The chassis plate fixing assembly (5) includes: The placement plate (51) is rotatably mounted on the base (1). The placement plate (51) and the fixed plate (42) are concentrically arranged and used to place the flotation machine rotor base plate (6). Several adjusting arms (52) are evenly distributed around the circumference of the placement plate (51), and one end of each adjusting arm (52) is rotatably disposed between the base (1) and the placement plate (51). Several clamping posts (53) are fixedly disposed at the other end of each of the adjusting arms (52), and each of the clamping posts (53) extends upward; The placement tray (51) has a plurality of arc grooves (512), the number and position of each arc groove (512) correspond one-to-one with each adjustment arm (52), and each clamping post (53) extends through the corresponding arc groove (512). A rotary drive mechanism (54) is used to drive the placement plate (51) to rotate relative to the base (1), so that each of the clamping columns (53) slides synchronously along the corresponding arc groove (512) to clamp or release the outer edge of the chassis plate (6).

7. The anti-deformation welding fixture for flotation machine rotors made of novel wear-resistant materials according to claim 6, characterized in that, The rotary drive mechanism (54) includes: The worm gear ring (541) is fixedly disposed on the outer edge of the placement disk (51); The worm (542) is rotatably mounted on the base (1), and the worm (542) meshes with the worm wheel ring (541); A second drive motor (543) is mounted on the base (1), and the output end of the second drive motor (543) is connected to one end of the worm gear (542) for transmission.

8. The anti-deformation welding fixture for flotation machine rotors made of novel wear-resistant materials according to claim 1, characterized in that, The outer edge of the top plate (41) is fixedly provided with a side ring (45) that protrudes downward and inward, and the side ring (45) is used to abut and press against the top of the blade (7).

9. The anti-deformation welding fixture for flotation machine rotors made of novel wear-resistant materials according to claim 1, characterized in that, The connecting frame (31) has sliding slots (311) at both ends. The sliding slots (311) at both ends are respectively engaged with the outer side of the corresponding support frame (2). The connecting frame (31) is slidably connected to the support frame (2) through the sliding slots (311).

10. The anti-deformation welding fixture for flotation machine rotors made of novel wear-resistant materials according to claim 1, characterized in that, The number of clamping slots (433) is equal to the number of blades (7) of the flotation machine rotor and their positions correspond one-to-one.

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