Rim shaping system for wheel rolling mill

Abstract

The invention discloses a rim shaping system for a wheel rolling mill, which comprises an edge roller posture adjusting system and a wheel blank centering structure, the wheel blank centering structure comprises an upper centering roller adjusting system arranged on the upper side of the front portion of the wheel rolling mill box body, a lower centering roller adjusting system arranged on the lower side of the front portion of the wheel rolling mill box body and a main roller arranged in the wheel rolling mill box body. The upper centering roller adjusting system and the lower centering roller adjusting system are used for being matched with the main roller to clamp a rim, the circle center of the rim is kept at a set position, and the main roller is used for being tightly attached to the circumferential rear side of the rim right in front of a wheel rolling mill box and driving the rim to rotate at the same time. The edge roller posture adjusting system is used for shaping the inner end face and the outer end face of the rim. By arranging the upper cantilever beam and the lower cantilever beam which are hinged and have damping, the impact of a blank on the upper centering roller and the lower centering roller in the high-speed rotating process is ingeniously weakened through energy conversion.

Description

Technical Field

[0001] The invention relates to the technical field of rolling mills, and in particular to a rim shaping system for a wheel rolling mill. Background Art

[0002] The wheel rolling mill is a kind of equipment for manufacturing railway train wheels. When manufacturing wheels, the heated blank is first pressed into shape by a press, then the spokes are expanded and the wheel rim and tread are rolled out on the wheel rolling mill, and finally the wheel is polished.

[0003] The main rollers and upper and lower centering rollers on the existing wheel rolling mill box are used to fix the position of the wheel blank during the rolling process to ensure that the axis of the side rollers always points to the center of the wheel blank. The side rollers are used to process the inner and outer end faces of the rim and control the height of the rim; the main rollers are used to process the tread and the rim, and the shape of the rim depends on the roll type of the main rollers; the left and right spoke rollers are used to expand the rim and at the same time drive the wheel to rotate through friction.

[0004] Due to the differences in wheel rim sizes, when edge rollers are used to shape wheel rims of different sizes, the posture of the edge rollers needs to be adjusted to accommodate wheel blanks of different sizes. However, edge rollers are often heavy and assembled at high positions, making adjustments time-consuming and labor-intensive. The prior art lacks a middle roller head adjustment device for edge rollers used in wheel rolling mills, and the roller heads can only be adjusted manually through external lifting equipment and traction equipment, which is unable to meet the efficiency and precision requirements of the wheel rolling mill during operation.

[0005] In addition, during the initial pressing and forming process of the blank, dynamic balance cannot be achieved, that is, the circumferential mass of the blank is uneven and positioning jumps occur during the rotation process. When the wheel blank is centered by the upper and lower centering rollers and the main rollers, the upper and lower centering rollers are often greatly impacted due to the large mass of the blank. On the other hand, the middle roller head of the existing edge roller will have pitting or deformation damage on the surface during long-term high-temperature use, which will cause the surface size of the finished wheel to be out of tolerance, and will also cause the wheel rim and tread to deform to varying degrees. Since the roller head of the edge roller is heavy and the assembly position is high, it is inconvenient to replace the middle roller head of the existing edge roller, which poses a safety hazard and has a low disassembly and assembly efficiency, affecting the efficiency of the entire production process. Summary of the invention

[0006] The object of the present invention is to provide a rim shaping system for a wheel rolling mill, which can drive the rim and shape the inner and outer end surfaces of the rim while positioning the rim.

[0007] The present invention adopts the following technical solutions: A wheel rim shaping system for a wheel rolling mill comprises a side rolling roller posture adjustment system and a wheel blank centering structure, wherein the wheel blank centering structure comprises an upper centering roller adjustment system arranged on the upper front side of a wheel rolling mill housing, a lower centering roller adjustment system arranged on the lower front side of the wheel rolling mill housing, and a main rolling roller arranged inside the wheel rolling mill housing; the upper centering roller adjustment system and the lower centering roller adjustment system are used to cooperate with the main rolling roller to tighten the wheel rim so that the center of the wheel rim is maintained at a set position, and the main rolling roller is used to closely adhere to the wheel rolling mill housing. The wheel mill body is located at the circumferential rear side of the rim in front of the body, and the wheel mill body is driven to rotate at the same time; the side roller posture adjustment system is used to shape the inner and outer end faces of the rim; the upper centering roller adjustment system includes an upper roller head, which is arranged on the upper side of the rim through an upper cantilever beam, and the rear side of the upper cantilever beam is hinged to the upper end face of the wheel mill body through an upper damping cylinder; the lower centering roller adjustment system includes a lower roller head, which is arranged on the lower side of the rim through a lower cantilever beam, and the rear side of the lower cantilever beam is hinged to the lower end face of the wheel mill body through a lower damping cylinder.

[0008] Furthermore, the side roller posture adjustment system for the wheel rolling mill includes a vertically arranged side roller, a vertical adjustment mechanism is arranged at the left end of the side roller, the vertical adjustment mechanism is connected to the side roller for up and down sliding, the left end of the vertical adjustment mechanism is connected to the horizontal adjustment mechanism, and the horizontal adjustment mechanism is used to drive the vertical adjustment mechanism to move left and right, and at the same time drive the side roller connected to the vertical adjustment mechanism to move left and right to the set position.

[0009] Furthermore, the vertical adjustment mechanism includes a fixed portion connected to the left end horizontal adjustment mechanism and a movable portion connected to the right end side roller.

[0010] Furthermore, the fixed part includes a vertically arranged support block, a protruding sliding track is arranged on the right surface of the support block, a long accommodating groove with an opening at the right end is vertically opened in the inner cavity of the support block, and a quick-release structure is arranged inside the long accommodating groove; the movable part includes a lifting ear suspended in the inner cavity of the long accommodating groove and connected to the quick-release structure at the left end, the right end of the lifting ear extends to the opening at the right end of the long accommodating groove and is fixedly connected to the driving block, and a sliding groove is arranged at the position of the left end surface of the driving block corresponding to the sliding track, and the driving block and the support block are connected by sliding up and down through the cooperation of the sliding track and the sliding groove.

[0011] Furthermore, the edge rolling roller includes a fixed sleeve and a middle roller head located at the lower end of the fixed sleeve and rotatably connected to the fixed sleeve; the horizontal adjustment mechanism adjusts the horizontal contact position of the middle roller head with the circumference of the rim to be processed; and the vertical adjustment mechanism adjusts the vertical contact position of the middle roller head with the circumference of the rim to be processed.

[0012] Furthermore, the horizontal adjustment mechanism includes a fixed box arranged horizontally on the left and right sides, the fixed box is arranged on the front surface of the wheel rolling mill box body, a hydraulic cylinder is arranged on the fixed box, the fixed end of the hydraulic cylinder is fixedly connected to the left side surface of the fixed box, and the piston rod of the hydraulic cylinder is passed through the fixed box and is slidably connected to the inner cavity of the fixed box.

[0013] Furthermore, the vertical adjustment mechanism includes a connecting box and a sliding track arranged on the right side of the connecting box; the right end of the piston rod is fixedly connected to the vertical adjustment mechanism, and the fixed sleeve in the edge roller body is slidably connected to the right end surface of the vertical adjustment mechanism through the sliding track.

[0014] Furthermore, the fixed sleeve is tilted up and down and has openings at both ends; the inner cavity of the fixed sleeve is coaxially penetrated by the mounting shaft, the mounting shaft is rotatably connected to the inner cavity of the fixed sleeve through two sets of bearings coaxially arranged up and down, and the middle roller head is arranged at the lower end of the mounting shaft.

[0015] Furthermore, a quick-release mechanism is provided along the axis of the side rolling roller, which is used to quickly separate or connect the middle roller head from the mounting shaft when the middle roller head is worn or needs maintenance.

[0016] Furthermore, the quick-release mechanism includes a countersunk through hole arranged at the axis center of the middle roller head and a traction screw through hole arranged at the axis center of the mounting shaft, the countersunk through hole of the countersunk through hole is adapted to the lower end of the mounting shaft, a threaded hole is arranged at the lower through hole of the countersunk through hole, a traction screw is inserted into the traction screw through hole, upper and lower ends of the traction screw are respectively provided with upper threads and lower threads, the lower threads are adapted to the threaded hole; the upper end of the traction screw is located outside the fixed sleeve and coaxially penetrates a flange plate, the upper end of the traction screw is matched with the pre-tightening nut thread through the upper thread, and the upper surface of the flange plate is pressed against the pre-tightening nut, and the lower surface of the flange plate is pressed against the upper surface of the inner ring of the bearing.

[0017] The present invention cleverly weakens the impact of the blank on the upper and lower centering rollers during high-speed rotation by arranging hinged upper and lower cantilever beams with damping through energy conversion; The invention realizes the adjustment of two degrees of freedom of the roller head at the lower end of the edge roller in the up-down and left-right directions by setting a vertical position adjustment mechanism, so that the wheel rolling mill equipment can adapt to more wheel blank specifications and meet the requirements of lean production; By setting up a quick-release mechanism, the roller head, traction screw and other wearing parts can be quickly replaced, which improves production efficiency and reduces production costs.

[0018] In the present invention, the vertical adjustment mechanism is provided to achieve the upper and lower position adjustment of the edge roller, so that the wheel rolling mill can meet the requirements of manufacturing wheel blanks with the same wheel rim shaping process but different diameters; By setting up a horizontal adjustment mechanism, the left and right position adjustment of the side rollers is realized, so that the wheel rolling mill can meet the needs of manufacturing wheel blanks with different rim shaping processes and different diameters; the utilization rate of the wheel rolling mill equipment is effectively improved; By providing a quick-release structure, the disassembly process of the fixed part and the movable part in the vertical adjustment mechanism is simplified, while the stress concentration of the screw thread is reduced, the service life of the screw is prolonged, and the assembly efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the side roller posture adjustment system of the present invention; Figure 2 It is a structural schematic diagram of the wheel rolling mill box body in the present invention; Figure 3 It is a structural schematic diagram of the horizontal adjustment mechanism in the present invention; Figure 4 It is a structural schematic diagram of the support block in the present invention; Figure 5 It is a schematic diagram of the structure of the lifting lug in the present invention; Figure 6 It is a structural schematic diagram of the lead screw in the present invention; Figure 7 It is a structural schematic diagram of the fixed box in the present invention; Figure 8 is a schematic structural diagram of the first rack in the present invention; Fig. 9 It is a schematic diagram of the structure of the top block in the present invention; Fig.10 This is a schematic diagram of the structure of the first gear and the second gear before assembly in the present invention; Fig.11 It is a schematic diagram of the structure of the first gear and the second gear rotating during assembly in the present invention; Fig.12 It is a schematic diagram of the structure of the first gear and the second gear being self-locking after being assembled in the present invention.

[0020] Fig.13 It is a schematic diagram of the structure of the fixed sleeve in the present invention; Fig.14 It is a structural schematic diagram of the traction screw in the present invention; Fig.15 It is a structural schematic diagram of the traction screw through hole in the present invention; Fig.16 It is a structural schematic diagram of the ball accommodating area in the present invention; Fig.17 It is a schematic diagram of the structure of the annular groove in the present invention.

[0021] In the figure, 1, side roller posture adjustment system; 2, wheel blank centering structure; 3, upper centering roller adjustment system; 4, lower centering roller adjustment system; 5, main roller; 6, wheel rim; 7, upper roller head; 8, upper cantilever beam; 9, upper damping cylinder; 10, wheel mill housing; 11, lower roller head; 12, lower cantilever beam; 13, lower damping cylinder; 14, side roller; 15, vertical adjustment mechanism; 16, horizontal adjustment mechanism; 17, support block; 18, sliding track; 19, accommodating long slot; 20, lifting ear; 21, driving block; 22, lead screw; 23, partition; 24. Quick-connect part; 25. Top block; 26. First gear; 27. Second gear; 28. First rack; 29. ​​Second rack; 30. First movable through groove; 31. Second movable through groove; 32. Circular boss; 33. Limit block; 34. Fixed sleeve; 35. Mounting shaft; 36. Middle roller head; 37. Traction screw through hole; 38. Traction screw; 39. Flange; 40. Ball accommodating area; 41. Embedded ball; 42. Annular groove; 43. Moving ball; 44. Protrusion; 45. Fixed box; 46. Slide groove; 47. Countersunk through hole. DETAILED DESCRIPTION

[0022] The present invention is described in detail below with reference to the accompanying drawings and embodiments: Figures 1 to 17 As shown, the wheel rim shaping system for a wheel rolling mill described in the present invention includes an edge roller posture adjustment system 1 and a wheel blank centering structure 2, the wheel blank centering structure 2 includes an upper centering roller adjustment system 3 arranged on the upper front side of the wheel rolling mill case 10, a lower centering roller adjustment system 4 arranged on the lower front side of the wheel rolling mill case 10 and a main roller 5 arranged inside the wheel rolling mill case 10; the upper centering roller adjustment system 3 and the lower centering roller adjustment system 4 are used to cooperate with the main roller 5 to tighten the rim 6 so that the center of the rim 6 is maintained at a set position, and the main roller 5 is used to be close to the circumferential rear side of the rim 6 arranged directly in front of the wheel rolling mill case 10, and drive the rim 6 to rotate at the same time; the edge roller posture adjustment system 1 is used to shape the inner and outer end faces of the rim 6.

[0023] The upper centering roller adjustment system 3 comprises an upper roller head 7, which is arranged on the upper side of the wheel rim 6 through an upper cantilever beam 8, and the rear side of the upper cantilever beam 8 is hinged to the upper end surface of the wheel mill box 10 through an upper damping cylinder 9; The lower centering roller adjustment system 4 includes a lower roller head 11 , which is arranged on the lower side of the rim 6 through a lower cantilever beam 12 , and the rear side of the lower cantilever beam 12 is hinged to the lower end surface of the wheel mill box 10 through a lower damping cylinder 13 .

[0024] The side roller posture adjustment system 1 for a wheel rolling mill comprises a side roller 14 arranged vertically, a vertical adjustment mechanism 15 arranged at the left end of the side roller 14, the vertical adjustment mechanism 15 is connected to the side roller 14 in an up-down sliding manner, and the side roller 14 moves up-down along the right end surface of the vertical adjustment mechanism 15 to a set position by driving the vertical adjustment mechanism 15; the left end of the vertical adjustment mechanism 15 is connected to a horizontal adjustment mechanism 16, and the horizontal adjustment mechanism 16 is used to drive the vertical adjustment mechanism 15 to move left and right, and at the same time drive the side roller 14 connected to the vertical adjustment mechanism 15 to move left and right to a set position; During operation, the rear side of the rim 6 presses against the front edge of the main roller 5, the upper damping cylinder 9 drives the upper cantilever beam 8 to make the upper roller head 7 suspended on the upper side of the rim 6 close to the upper edge of the rim 6, and the lower damping cylinder 13 drives the lower cantilever beam 12 to make the lower roller head 11 suspended on the lower side of the rim 6 close to the lower edge of the rim 6; that is, the rim 6 is subjected to extrusion forces from three directions from different positions of the upper side, the lower side and the rear side, so that the center position is fixed; during operation, the main roller 5 drives the rim 6 to rotate around the axis, and the side roller 14 located at the set position shapes the inner and outer end faces of the rim 6 by squeezing the rim 6.

[0025] In the present invention, the vertical adjustment mechanism 15 includes a fixed part connected to the left end horizontal adjustment mechanism 16 and a movable part connected to the right end edge roller 14; in order to realize the up and down movement of the edge roller 14; the fixed part includes a vertically arranged support block 17, the right surface of the support block 17 is provided with a protruding sliding track 18, the inner cavity of the support block 17 is vertically opened with a accommodating long groove 19 with a right end opening, and a quick-release structure is arranged inside the accommodating long groove 19; during operation, the quick-release structure connects the movable part and drives the movable part to move up and down along the sliding track 18 through an external force; the movable part includes a lifting ear 20 suspended in the inner cavity of the accommodating long groove 19 and connected to the left end quick-release structure, the right end of the lifting ear 20 extends to the right end opening of the accommodating long groove 19 and is fixedly connected to a driving block 21, a slide groove 46 is arranged at the left end surface of the driving block 21 corresponding to the position of the sliding track 18, and the driving block 21 and the support block 17 cooperate with the slide groove 46 through the sliding track 18 to slide up and down. During operation, the quick-release structure drives the lifting eye 20 to make the driving block 21 fixed on the right side of the lifting eye 20 move up and down through the cooperation of the sliding track 18 and the slide groove 46, so as to realize the relative sliding of the support block 17 in the fixed part and the driving block 21 in the movable part, that is, the quick-release structure drives the side roller 14 connected to the movable part to move up and down; In this embodiment, the quick-release structure includes a lead screw 22 vertically arranged in the inner cavity of the accommodating long groove 19. The upper and lower ends of the lead screw 22 are respectively connected to the support block 17 through bearings. A lifting ear 20 is passed through the middle of the lead screw 22 and is connected through threads. The lead screw 22 and the lifting ear 20 can form self-locking in a relative rotation state; the lead screw 22 and the lifting ear 20 can form a relative position change of the lead screw 22 and the lifting ear 20 through threads in a relative rotation state.

[0026] During operation, the lead screw 22 is driven to rotate, and the ear 20 threadedly connected to the lead screw 22 moves upward or downward. At the same time, the driving block 21 fixed to the right end of the ear 20 slides with the slide track 18 and the slide groove 46 to achieve relative sliding of the support block 17 and the driving block 21. The up and down movement of the support block 17 and the driving block 21 realizes the adjustment of the up and down position of the side roller 14 connected to the right side of the driving block 21. To facilitate the adjustment of the lead screw 22: The accommodating long groove 19 is T-shaped, including an upper transverse groove and a lower longitudinal groove. A partition 23 is provided at the boundary between the transverse groove and the longitudinal groove. The partition 23 is fixed to the inner cavity at the bottom of the transverse groove. The upper light rod portion of the lead screw 22 is penetrated by the partition 23 and is rotatably connected to the partition 23. The lower light rod portion of the lead screw 22 is inserted into the bottom of the longitudinal groove of the inner cavity of the support block 17 and is rotatably connected to the support block 17. A hexagonal adjustment nut is concentrically fixed on the upper portion of the lead screw 22. The rotation drive of the lead screw 22 is realized by rotating the hexagonal adjustment nut during the working process. Since the right end of the moving part is fixedly connected with the edge roller 14, and the edge roller 14 has a large mass, the downward gravity exerted on the edge roller 14 is completely transmitted to the threaded fitting place between the middle part of the lead screw 22 and the lifting ear 20 through the lifting ear 20. By rotating the lead screw 22, the edge roller 14 is slowly moved upward to the set position. The threaded fitting place between the middle part of the lead screw 22 and the lifting ear 20 is easily deformed by force, making the lead screw 22 difficult to be driven, which increases the difficulty of adjustment. In order to overcome this problem, in this embodiment, the quick-release structure further includes a quick-connection portion 24 disposed above the lifting ear 20 and also threadedly connected to the lead screw 22. The quick-connection portion 24 is used to realize that during the assembly or adjustment of the side roller 14, the gravity of the side roller 14 can be distributed to other threads of the lead screw 22 through the quick-connection portion 24, so that the force at the threaded matching point between the middle part of the lead screw 22 and the lifting ear 20 can be distributed, thereby reducing the difficulty of adjustment. In the present invention, the quick-connect part 24 includes a top block 25 disposed above the lifting ear 20 and threadedly connected to the lead screw 22, and a first gear 26 and a second gear 27 that mesh with each other and have the same structure are symmetrically disposed at the front and rear ends of the right side of the lower end of the top block 25, and the first gear 26 and the second gear 27 are connected to the lower end of the top block 25 through the first gear shaft and the second gear shaft respectively, and the left ends of the first gear shaft and the second gear shaft are respectively fixedly connected to the top block 25, and the right ends are respectively penetrated by the first gear 26 and the second gear 27 that mesh with each other and are respectively rotatably connected to the first gear 26 and the second gear 27; In order to achieve better transmission effect through meshing between teeth: In this embodiment, the moving part further includes a first rack 28 and a second rack 29 fixed to the left end surface of the driving block 21 and arranged corresponding to the outer sides of the first gear 26 and the second gear 27 respectively; During the working process, the first gear 26 and the second gear 27 meshing with each other also mesh with the first rack 28 and the second rack 29 respectively; during assembly, the first gear 26 and the second gear 27 meshing with each other are moved to the middle position of the first rack 28 and the second rack 29 by rotating the gears, and the meshing with the first rack 28 and the second rack 29 is maintained, so that the assembly connection between the moving part and the fixed part can be completed; After the assembly is completed, the first gear 26 and the second gear 27 will no longer move relative to the first rack 28 and the second rack 29, respectively, to form a self-locking state; the downward gravity exerted on the edge roller 14 is transmitted to the thread of the lead screw 22 at the top block 25 through the first gear 26 and the second gear 27 to achieve force sharing; In the present invention, a first movable through groove 30 and a second movable through groove 31 with the same direction are respectively opened at the positions of the first gear shaft and the second gear shaft corresponding to the first gear 26 and the second gear 27, and the first gear shaft and the second gear shaft respectively pass through the first movable through groove 30 and the second movable through groove 31 to pass through the first gear 26 and the second gear 27, and the first movable through groove 30 and the second movable through groove 31 are respectively opened along the radial direction of the first gear 26 and the second gear 27 and pass through the axis, and the first gear shaft and the second gear shaft are respectively connected to the first gear 26 and the second gear 27 by sliding and rotating through the first movable through groove 30 and the second movable through groove 31; By driving the first gear 26 and the second gear 27 to move along the first moving groove 30 and the second moving groove 31, the first gear shaft and the second gear shaft can be eccentrically inserted into the first gear 26 and the second gear 27 respectively, and the first gear 26 and the second gear 27 are respectively meshed with the first rack 28 and the second rack 29 and squeezed each other so that they cannot rotate, thereby achieving self-locking; During the assembly process, the lifting device is used to lift the edge roller 14 until the slide groove 46 on the movable part at the left end of the edge roller 14 is in the corresponding position of the sliding track 18 of the fixed part, and the roller moves upward along the sliding track 18, and the first gear 26 and the second gear 27 are adjusted so that the first movable groove 30 and the second movable groove 31 are respectively set vertically. At this time, the first gear 26 and the second gear 27 are not yet in contact with the first rack 28 and the second rack 29. Under the action of gravity, the mutually meshing first gear 26 and the second gear 27 will move downward along the first movable groove 30 and the second movable groove 31, and no relative rotation will occur; at this time, the first gear shaft and the second gear shaft are respectively located at the top of the first movable groove 30 and the second movable groove 31 on the mutually meshing first gear 26 and the second gear 27, and the first gear shaft and the second gear shaft are both in an eccentric position, that is, the first gear 26 and the second gear 27 squeeze each other and cannot rotate. As the movable part continues to move upward and squeeze the lower ends of the first gear 26 and the second gear 27, the first gear 26 and the second gear 27 are pressed against each other. The gear 27 moves upward without relative rotation. During this process, the first moving groove 30 and the second moving groove 31 on the first gear 26 and the second gear 27 move upward as a whole. When the first gear shaft and the second gear shaft are located in the middle of the first moving groove 30 and the second moving groove 31, they reach the axial position of the first gear 26 and the second gear 27. At this time, the first gear 26 and the second gear 27 meshing with each other start to rotate synchronously, and the first rack 28 and the second rack 29 meshing with the first gear 26 and the second gear 27, respectively, move upward relative to the first gear 26 and the second gear 27. In order to make the moving part move upward and squeeze the first gear 26 and the second gear 27 so that the first gear shaft and the second gear shaft are just concentrically arranged to penetrate the first gear 26 and the second gear 27; the first gear 26 and the second gear 27 are automatically converted from upward movement to meshing rotation along the first rack 28 and the second rack 29 respectively; In this embodiment, the left end surfaces of the first gear 26 and the second gear 27 are respectively coaxially provided with circular bosses 32, and a limiting block 33 is provided on the upper side of the circular boss 32. The left end of the limiting block 33 is fixed with the top block 25, so that when the lower end of the limiting block 33 is pressed against the circular boss 32, the first gear shaft and the second gear shaft are just concentrically penetrated by the first gear 26 and the second gear 27; that is, when the first gear 26 and the second gear 27 cannot move upward, the first rack 28 and the second rack 29 are continuously driven, and under the drive of the first rack 28 and the second rack 29, the first gear 26 and the second gear 27 are automatically converted from upward movement to rotation, that is, the driving block 21 fixed at the right end of the first rack 28 and the second rack 29 moves upward to achieve connection with the quick-connection part 24; Due to the large gravity of the edge roller 14 itself, it is not easy to drive the edge roller 14 through the lifting device to adjust the position of the lifting lug 20 so that the lead screw 22 is correspondingly penetrated to form a threaded fit; In this embodiment, when the moving part and the fixed part are connected, the quick-connection part 24 in the quick-release structure should quickly form a self-locking position to reduce the difficulty of the subsequent screw 22 passing through the lifting lug 20, and at the same time, the gravity of the edge roller 14 is distributed to different screw 22 threads; In this embodiment, the first gear 26 and the second gear 27 are respectively meshed with the first rack 28 and the second rack 29 and rise to a sufficient distance from the ends of the first rack 28 and the second rack 29, and the driving of the side roller 14 can be stopped, so that the side roller 14 is only affected by gravity to achieve rapid positioning; under the action of gravity, the side roller 14 drives the first gear 26 and the second gear 27 to rotate to the first movable through groove 30 and the second movable through groove 31 for the first time. Since the first gear shaft and the second gear shaft are respectively fixed to the top block 25, that is, the position remains unchanged, under the action of gravity, the first gear 26 and the second gear 27 are connected to the first movable through groove 30 and the second movable through groove 31. A rack 28 and a second rack 29 move downward synchronously until the upper end surfaces of the first moving groove 30 and the second moving groove 31 contact the upper end surfaces of the first gear shaft and the second gear shaft, so that the first gear shaft and the second gear shaft are eccentrically penetrated with the first gear 26 and the second gear 27 respectively. Under the trend of the first rack 28 and the second rack 29 moving downward, the first gear 26 and the second gear 27 continue to drive the first gear 26 and the second gear 27 so that the first gear 26 and the second gear 27 that are meshing with each other are squeezed against each other to form a quick self-locking position; then the lead screw 22 is driven to rotate so that the lead screw 22 can smoothly penetrate the lifting ear 20 to form a threaded connection.

[0027] In order to distribute the gravity of the edge roller 14 at different threads of the lead screw 22, in this embodiment, multiple groups of quick-connect parts 24 of the same structure can be provided along the lead screw 22; During the assembly process, when the edge roller 14 drives the first gear 26 and the second gear 27 to rotate until the first movable through groove 30 and the second movable through groove 31 are vertically set for the first time, the edge roller 14 needs to move downward a certain distance under the action of gravity. In order to shorten the distance that the edge roller 14 moves downward and make the first gear 26 and the second gear 27 form eccentric self-locking faster, in the present embodiment, in multiple groups of quick-connect parts 24 with the same structure, the first movable through groove 30 and the second movable through groove 31 in each pair of quick-connect parts 24 have different orientations.

[0028] In the present invention, the edge roller 14 includes a fixed sleeve 34 and a middle roller head 36 located at the lower end of the fixed sleeve 34 and rotatably connected to the fixed sleeve 34. In the present invention, the horizontal adjustment mechanism 16 adjusts the horizontal contact position of the middle roller head 36 with the circumference of the wheel rim 6 to be processed; the vertical adjustment mechanism 15 adjusts the vertical contact position of the middle roller head 36 with the circumference of the wheel rim 6 to be processed.

[0029] In the present invention, the horizontal adjustment mechanism 16 includes a fixed box 45 arranged horizontally on the left and right sides, the fixed box 45 is arranged on the front surface of the wheel rolling mill box 10, a hydraulic cylinder is arranged on the fixed box 45, the fixed end of the hydraulic cylinder is fixedly connected to the left side of the fixed box 45, and the piston rod of the hydraulic cylinder is passed through the fixed box 45 and is slidably connected to the inner cavity of the fixed box 45; the vertical adjustment mechanism 15 includes a connecting box and a sliding track 18 arranged on the right side of the connecting box; the right end of the piston rod is fixedly connected to the vertical adjustment mechanism 15, and the side roller 14 itself is fixedly connected to the side roller 14. The fixed sleeve 34 in the body is connected to the right end surface of the vertical adjustment mechanism 15 for sliding up and down through the sliding track 18; the hydraulic cylinder drives the piston rod to move left and right, so as to adjust the contact position of the middle roller head 36 in the side roller 14 with the circumference of the rim 6 to be processed in the horizontal direction; by adjusting the vertical height of the fixed sleeve 34 in the side roller 14 on the sliding track 18 at the right end of the vertical adjustment mechanism 15, and positioning it through the position locking device, the contact position of the middle roller head 36 in the side roller 14 with the circumference of the rim 6 in the vertical direction can be adjusted.

[0030] During the working process, firstly, according to the diameter of the rim 6 to be shaped, the upper and lower positions of the edge roller 14 are adjusted by the vertical adjustment mechanism 15, and the position is locked after the middle roller head 36 at the lower part of the edge roller 14 contacts the circumferential plastic area of ​​the rim 6. Since the axis of the rim 6 is arranged in the horizontal direction and rotates at a high speed under the drive of the wheel rolling mill box 10, during the high-speed rotation of the rim 6, the hydraulic cylinder drives the piston rod to move horizontally to the set position, and the middle roller head 36 at the lower part of the edge roller 14 is used to squeeze the rotating rim 6 circumference to shape the rim 6.

[0031] In the present invention, the fixed sleeve 34 is tilted up and down and has openings at both ends; the inner cavity of the fixed sleeve 34 is coaxially penetrated by the mounting shaft 35, and the mounting shaft 35 is rotatably connected to the inner cavity of the fixed sleeve 34 through two sets of bearings coaxially arranged up and down, and the middle roller head 36 is arranged at the lower end of the mounting shaft 35; During operation, the middle roller head 36 is in constant contact with the high-speed rotating high-temperature rim 6, which can easily cause wear of the middle roller head 36. In order to facilitate the removal and replacement of the middle roller head 36: In the present invention, the side roller 14 is also provided with a quick-release mechanism along the axis, which is used to quickly separate or connect the middle roller head 36 from the mounting shaft 35 when the middle roller head 36 is worn or needs maintenance. In the present invention, the quick-release mechanism includes a countersunk through hole 47 arranged at the axis center of the middle roller head 36 and a traction screw through hole 37 arranged at the axis center of the installation shaft 35. The countersunk through hole 47 is adapted to the lower end of the installation shaft 35. A threaded hole is arranged at the lower through hole of the countersunk through hole 47. A traction screw 38 is inserted into the traction screw through hole 37. The upper and lower ends of the traction screw 38 are respectively provided with an upper thread and a lower thread, and the lower thread is adapted to the threaded hole. The upper end of the traction screw 38 is located outside the fixed sleeve 34 and is coaxially penetrated by a flange 39. The upper end of the traction screw 38 is matched with the pre-tightening nut thread through the upper thread, and the upper surface of the flange 39 is pressed against the pre-tightening nut, and the lower surface of the flange 39 is pressed against the upper surface of the inner ring of the bearing. During the installation process, the traction screw 38 is passed through the traction screw through hole 37 and is installed on the installation shaft 35. The threaded hole at the lower part of the countersunk through hole 47 is pre-tightened with the lower part of the traction screw 38 through threaded cooperation, and the countersunk part at the upper part of the countersunk through hole 47 is sleeved on the outer side of the lower end of the installation shaft 35. The pre-tightening nut is adjusted so that the lower surface of the flange 39 is pressed against the upper surface of the inner ring of the bearing to ensure that the middle roller head 36 is fixedly connected to the installation shaft 35. In the process of the middle roller head 36 continuously rotating with the high-speed rotating rim 6, the torque acts almost completely on the traction screw 38, which makes the traction screw 38 prone to fatigue fracture; in order to make the mounting shaft 35 share part of the torque acting on the traction screw 38 and increase the service life of the traction screw 38, the present invention also makes the following improvements: Since the mass of the middle roller head 36 is large, the traction screw 38 is simultaneously subjected to the downward traction force of the middle roller head 36 and the torque caused by the rotation of the middle roller head 36. In order to further enable the mounting shaft 35 to share part of the traction force on the traction screw 38, thereby increasing the service life of the traction screw 38: In this embodiment, a ball receiving area 40 is provided on the shaft wall of the mounting shaft 35. The ball receiving area 40 is provided along the radial direction of the shaft wall and penetrates the shaft wall. An embedded ball 41 is embedded in the ball receiving area 40. The embedded ball 41 moves left and right in the ball receiving area 40. An annular groove 42 is also provided at a position corresponding to the circumferential direction of the countersunk hole in the inner cavity of the middle roller head 36 and the ball accommodating area 40, in which a plurality of movable balls 43 are embedded, and the plurality of movable balls 43 are distributed in the annular groove 42 along the circumferential direction; and when the plurality of movable balls 43 are not squeezed by the portion where the embedded balls 41 enter the annular groove 42, the plurality of movable balls 43 roll freely in the annular groove 42, and there is a gap between at least one group of adjacent movable balls 43; when the plurality of movable balls 43 are squeezed by the portion where the embedded balls 41 enter the annular groove 42, the plurality of movable balls 43 are pressed tightly in sequence in the annular groove 42, and the first and last two movable balls 43 are pressed tightly against both sides of the portion where the embedded balls 41 enter the annular groove 42; For example, the movable ball 43 and the embedded ball 41 are set to have the same diameter, and the corresponding annular groove 42 is set to be a half groove; when the embedded ball 41 enters the annular groove 42, a plurality of movable balls 43 are closely attached to the annular groove 42 in sequence, and the first and last movable balls 43 are closely attached to the two sides of the portion where the embedded ball 41 enters the annular groove 42; When the traction screw 38 is inserted and threadedly connected with the middle roller head 36 through the thread, the outer side of the driving embedded ball 41 in the ball accommodating area 40 is located outside the ball accommodating area 40, and the outer side of the driving embedded ball 41 enters the annular groove 42 corresponding to the inner cavity of the middle roller head 36, squeezing the plurality of moving balls 43 in the annular groove 42. After being squeezed, the plurality of moving balls 43 slide along the annular groove 42 until the moving balls 43 are pressed against each other, and the first and last two moving balls 43 are tightly against the embedded ball 41. The two sides of the part entering the annular groove 42 make the movable ball 43 unable to slide along the annular groove 42, and the insertion of the traction screw 38 makes the embedded ball 41 in the annular groove 42 unable to move up and down. Since the embedded ball 41 is arranged in the shaft wall of the installation shaft 35, when the middle roller head 36 is subjected to downward traction due to gravity, the downward traction force exerted on the middle roller head 36 is transmitted to the embedded ball 41 in the ball accommodating area 40 through the annular groove 42, that is, the installation shaft 35 shares part of the traction force; Because the middle roller head 36 is driven by the rotating rim 6, the torque is transmitted to the embedded balls 41 in the ball receiving area 40 through the moving balls 43 in the annular groove 42, that is, the mounting shaft 35 shares part of the torque; In order to drive the embedded ball 41 to move outward from the inner cavity of the mounting shaft 35, it is convenient to assemble the middle roller head 36: In this embodiment, a protrusion 44 is provided at the position of the traction screw 38 corresponding to the embedded ball 41, and the protrusion 44 is coaxially fixed on the traction screw 38, and the protrusion 44 is adapted to the inner cavity of the installation shaft 35; During the installation process, the traction screw 38 is screwed into the threaded hole at the bottom of the countersunk hole. During the process of downward pre-tightening of the traction screw 38 relative to the middle roller head 36, the protrusion 44 fixed on the traction screw 38 squeezes and drives the embedded ball 41 to move outward to the annular groove 42 corresponding to the inner cavity of the middle roller head 36. When the embedded ball 41 moves to the outside of the ball accommodating area 40, the outer surface of the embedded ball 41 enters the annular groove 42 corresponding to the inner cavity of the middle roller head 36. By squeezing the moving ball 43 in the annular groove 42, the moving ball 43 is squeezed and slides along the annular groove 42 until the moving balls 43 are pressed against each other, and the moving balls 43 cannot slide along the annular groove 42. During the installation process, the outer surface of the cylindrical protrusion 44 needs to be exactly at the innermost corresponding position of the embedded ball 41, and the embedded ball 41 needs to be able to move to a position that is close to the corresponding annular groove 42; this requires that the thread pitch of the threaded hole at the bottom of the countersunk hole and the dimensions of the embedded ball 41 and the corresponding annular groove 42 need to be accurately calculated and processed. In order to reduce the difficulty of processing: In the present embodiment, the lower end of the cylindrical protrusion 44 is in the shape of a truncated cone. When the traction screw 38 is pre-tightened by the lower thread, the outer surface of the truncated cone moves downward, so that the distance that the embedded ball 41 moves outward can change linearly, so that the driving distance of the protrusion 44 to the embedded ball 41 is controlled by the screwing length of the lower thread of the traction screw 38. By adjusting the screwing length of the lower thread of the traction screw 38, the embedded ball 41 is pressed against the corresponding annular groove 42, thereby increasing the tolerance range of the design dimensions of the embedded ball 41 and the corresponding annular groove 42, and reducing the processing difficulty.

[0032] During the processing of the cylindrical protrusion 44, the lower end of the cone is shaped like a cone. Due to the linear characteristics of the conical surface, the distance that the outer surface of the cone drives the embedded ball 41 to move radially forms a range of values. Because the set distance of the embedded ball 41 to move radially is a set value, during the processing, the set value can be made to fall within the range of values.

Claims

1. A rim shaping system for a wheel rolling mill, characterized in that: It includes a side roller posture adjustment system and a wheel blank centering structure. The wheel blank centering structure includes an upper centering roller adjustment system arranged on the upper front side of the wheel mill box, a lower centering roller adjustment system arranged on the lower front side of the wheel mill box and a main roller arranged inside the wheel mill box; the upper centering roller adjustment system and the lower centering roller adjustment system are used to cooperate with the main roller to tighten the rim so that the center of the rim is maintained at a set position, and the main roller is used to be close to the circumferential rear side of the rim arranged directly in front of the wheel mill box, and drive the rim to rotate at the same time; the side roller posture adjustment system is used to shape the inner and outer end faces of the rim; the upper centering roller adjustment system includes an upper roller head, which is arranged on the upper side of the rim through an upper cantilever beam, and the rear side of the upper cantilever beam is hinged to the upper end face of the wheel mill box through an upper damping cylinder; the lower centering roller adjustment system includes a lower roller head, which is arranged on the lower side of the rim through a lower cantilever beam, and the rear side of the lower cantilever beam is hinged to the lower end face of the wheel mill box through a lower damping cylinder.

2. The rim shaping system for a wheel rolling mill according to claim 1, characterized in that: The side roller posture adjustment system for the wheel rolling mill includes a vertically arranged side roller, a vertical adjustment mechanism is arranged at the left end of the side roller, the vertical adjustment mechanism is connected to the side roller for up and down sliding, the left end of the vertical adjustment mechanism is connected to the horizontal adjustment mechanism, and the horizontal adjustment mechanism is used to drive the vertical adjustment mechanism to move left and right, and at the same time drive the side roller connected to the vertical adjustment mechanism to move left and right to the set position.

3. The rim shaping system for a wheel rolling mill according to claim 2, characterized in that: The vertical adjustment mechanism comprises a fixed part connected to the horizontal adjustment mechanism at the left end and a movable part connected to the edge roller at the right end.

4. The rim shaping system for a wheel rolling mill according to claim 3, characterized in that: The fixed part includes a vertically arranged support block, a protruding sliding track is arranged on the right surface of the support block, a long accommodating groove with an opening at the right end is vertically opened in the inner cavity of the support block, and a quick-release structure is arranged inside the long accommodating groove; the movable part includes a lifting ear suspended in the inner cavity of the long accommodating groove and connected to the quick-release structure at the left end, the right end of the lifting ear extends to the opening at the right end of the long accommodating groove and is fixedly connected to the driving block, a sliding groove is arranged at the position of the left end surface of the driving block corresponding to the sliding track, and the driving block and the support block are connected by sliding up and down through the cooperation of the sliding track and the sliding groove.

5. The rim shaping system for a wheel rolling mill according to claim 4, characterized in that: The edge rolling roller includes a fixed sleeve and a middle roller head located at the lower end of the fixed sleeve and rotatably connected to the fixed sleeve; the horizontal adjustment mechanism adjusts the horizontal contact position of the middle roller head with the circumference of the rim to be processed; the vertical adjustment mechanism adjusts the vertical contact position of the middle roller head with the circumference of the rim to be processed.

6. The rim shaping system for a wheel rolling mill according to claim 3, characterized in that: The horizontal adjustment mechanism includes a fixed box arranged horizontally on the left and right sides, the fixed box is arranged on the front surface of the wheel rolling mill box body, a hydraulic cylinder is arranged on the fixed box, the fixed end of the hydraulic cylinder is fixedly connected to the left side of the fixed box, and the piston rod of the hydraulic cylinder is passed through the fixed box and is slidably connected to the inner cavity of the fixed box.

7. The rim shaping system for a wheel rolling mill according to claim 5, characterized in that: The vertical adjustment mechanism includes a connection box and a sliding track arranged on the right side of the connection box; the right end of the piston rod is fixedly connected to the vertical adjustment mechanism, and the fixed sleeve in the edge roller body is slidably connected to the right end surface of the vertical adjustment mechanism through the sliding track.

8. The rim shaping system for a wheel rolling mill according to claim 7, characterized in that: The fixed sleeve is tilted up and down and has openings at both ends; the inner cavity of the fixed sleeve is coaxially penetrated by a mounting shaft, which is rotatably connected to the inner cavity of the fixed sleeve through two sets of bearings coaxially arranged up and down, and the middle roller head is arranged at the lower end of the mounting shaft.

9. The rim shaping system for a wheel rolling mill according to claim 8, characterized in that: The side roller is also provided with a quick-release mechanism along the axis thereof, which is used for quickly separating or connecting the middle roller head from the mounting shaft when the middle roller head is worn or needs maintenance.

10. The rim shaping system for a wheel rolling mill according to claim 9, characterized in that: The quick-release mechanism includes a countersunk through hole arranged at the axis center of the middle roller head and a traction screw through hole arranged at the axis center of the mounting shaft. The countersunk through hole of the countersunk through hole is adapted to the lower end of the mounting shaft. A threaded hole is arranged at the lower through hole of the countersunk through hole. A traction screw is inserted into the traction screw through hole. Upper and lower ends of the traction screw are respectively provided with upper threads and lower threads, and the lower threads are adapted to the threaded hole. The upper end of the traction screw is located outside the fixed sleeve and a flange is coaxially passed through. The upper end of the traction screw cooperates with the pre-tightening nut thread through the upper thread, and the upper surface of the flange is pressed against the pre-tightening nut, and the lower surface of the flange is pressed against the upper surface of the inner ring of the bearing.

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