Synchronous centering mechanism of wheel rolling mill

Abstract

The invention discloses a wheel rolling mill synchronous centering mechanism, and belongs to the technical field of steel wheel rolling mills, the wheel rolling mill synchronous centering mechanism comprises a main roller assembly slidably arranged in a mounting groove of a machine body in the left-right direction and centering roller assemblies symmetrically arranged relative to the main roller assembly in the up-down direction, and the two centering roller assemblies are both hinged to the machine body; a driving part is arranged on the main roller assembly and used for driving the left ends of the two centering roller assemblies to rotate at the same time when the main roller assembly moves rightwards. When the device is used, a wheel is placed between the right ends of the two centering roller assemblies and the right end of the main roller assembly through the mechanical arm, and then the main roller assembly is driven by the main hydraulic telescopic rod to move rightwards; the purpose that the right end of the main roller assembly and the right ends of the two centering roller assemblies synchronously move inwards to clamp the tread of the wheel is achieved, any position when the right end of the main roller assembly and the right ends of the two centering roller assemblies synchronously move inwards is provided with an inscribed circle, the inscribed circles are concentric, and it is guaranteed that the tread of the wheel is effectively clamped.

Description

Technical Field

[0001] The invention belongs to the technical field of steel wheel rolling mills, and in particular relates to a synchronous centering mechanism for a wheel rolling mill. Background Art

[0002] At present, 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 wheel spokes are expanded and the wheel rim and tread are rolled out on the wheel rolling mill, and finally the wheel is precisely processed on a lathe.

[0003] The existing hot rolling mill for steel wheels generally includes main rollers, upper centering rollers, lower centering rollers, side rollers, guide rollers and spoke rollers; when in use, the wheel that has just been hot forged is placed in a set position by a mechanical arm, and then the main rollers, upper centering rollers and lower centering rollers are closed to clamp the tread of the wheel, and then the side rollers and guide rollers clamp the side of the wheel, the rounded table surface of the spoke roller contacts the inner edge surface of the wheel spoke, and then the rotation of the spoke roller drives the wheel to rotate through friction; the driving mode of the main rollers, upper centering rollers and lower centering rollers of the existing rolling mill is independent driving. Since the wheel is round, the control system needs to control the respective driving devices of the main rollers, upper centering rollers and lower centering rollers to act separately, and finally the wheel is clamped. It is necessary to ensure that the circumferential surfaces of the main rollers, upper centering rollers and lower centering rollers are all circumscribed with a virtual circle, so as to ensure effective clamping of the wheel.

[0004] In the above scheme, three independent power devices need to be separately provided to drive the main roller, the upper centering roller and the lower centering roller respectively, which increases energy consumption and increases the manufacturing cost and operation cost of the equipment. Summary of the invention

[0005] The purpose of the present invention is to provide a synchronous centering mechanism for a wheel rolling mill, which has the advantage of a power device simultaneously driving the main rolling roller, the upper centering roller and the lower centering roller to close and open, and effectively solves the problems of high manufacturing cost and high energy consumption during operation of the hot rolling mill in the prior art.

[0006] The present invention adopts the following technical scheme: a synchronous centering mechanism of a wheel rolling mill, comprising a main roller assembly slidably arranged in an installation groove of a machine body along the left-right direction and a centering roller assembly symmetrically arranged relative to the main roller assembly along the up-down direction, and the two centering roller assemblies are both hinged to the machine body; a driving part is arranged on the main roller assembly, and the driving part is used to simultaneously drive the left ends of the two centering roller assemblies to rotate when the main roller assembly moves to the right, so that the right ends of the two centering roller assemblies and the right end of the main roller assembly move inward synchronously, and at any position in this process, the right ends of the two centering roller assemblies and the right end of the main roller assembly are always tangent to the circumferential surface of the corresponding virtual circle, and the inscribed circles of the right ends of the two centering roller assemblies and the right end of the main roller assembly are always concentric; a main hydraulic telescopic rod is arranged on the left end of the main roller assembly, and the main hydraulic telescopic rod is used to drive the main roller assembly to move left and right.

[0007] Furthermore, the centering roller assembly includes an articulated arm and a centering roller rotatably connected to the right end of the articulated arm, and the middle section of the articulated arm is hinged to the machine body.

[0008] Furthermore, the main rolling roller assembly includes a driving rod, and a main rolling roller rotatably connected to the right end of the driving rod, the left end of the driving rod is fixedly arranged with the output end of the main hydraulic telescopic rod, the driving rod is located in the mounting groove of the machine body and is slidably arranged with the machine body along the left and right directions, the driving part includes a driving block fixedly arranged on the driving rod, the upper and lower parts of the right side surface of the driving block are provided with cam surfaces, and a follow-up mechanism is arranged on the articulated arm, the follow-up mechanism is used to keep the left end of the articulated arm always in contact with the cam surface when the driving block moves left and right.

[0009] Furthermore, the follower mechanism includes two follower plates, the left end of each follower plate is hinged to the body, the middle part of each follower plate is provided with an arc hole along the left and right directions, and the right part of each follower plate is provided with an adaptation hole; the front side surface of each driving block is fixedly provided with a main pin column located in the corresponding arc hole, and the left part of the front side surface of each articulated arm is fixedly provided with a secondary pin column located in the corresponding adaptation hole.

[0010] Furthermore, a first compensation mechanism is arranged between the articulated arm and the centering roller; a second compensation mechanism is arranged between the driving rod and the main roller; the first compensation mechanism is used to drive the centering roller to move inward and contact the tread of the wheel when the wheel is clamped and the centering roller is not in contact with the tread of the wheel; the second compensation mechanism is used to drive the main roller to move inward and contact the tread of the wheel when the wheel is clamped and the main roller is not in contact with the tread of the wheel.

[0011] Furthermore, the first compensation mechanism includes a shell fixedly arranged on the right end of the articulated arm, a centering roller is rotatably connected to the inside of the mounting block, a guide rod is fixedly arranged on the upper end surface of the mounting block, and the guide rod is penetrated into the shell along the up and down directions; a base plate is fixedly arranged on the guide rod located in the shell, a first compensation spring is sleeved on the guide rod located in the shell, the bottom end of the first compensation spring is fixedly arranged on the base plate, and a limiting ring is fixedly arranged in the shell above the base plate.

[0012] Furthermore, the main rolling roller is rotatably connected in the two clamping plates, the driving rod is slidably arranged in the two clamping plates along the left and right directions, the second compensation mechanism includes an upper end surface and a lower end surface of the driving rod, both of which are provided with sliders slidably arranged in the left and right directions, each slider is fixed to each clamping plate, a second compensation spring is fixedly arranged between the driving block and each slider, a limit block is fixedly arranged on the upper end surface and the lower end surface of the driving rod, a through hole is opened on the limit block, and the second compensation spring passes through the through hole of the limit block.

[0013] Furthermore, an adjustment plate is fixedly provided at the top end of the first compensation spring, and the adjustment plate is slidably arranged in the shell along the up and down directions. The upper end surface of the adjustment plate is rotatably connected to a threaded column, and the outer surface of the threaded column is threadedly connected to the shell; the guide rods are both sleeved in the adjustment plate and the threaded column.

[0014] Furthermore, a buffer hole is opened in the left-right direction at the position corresponding to the driving block and the second compensation spring, and a push block is slidably arranged in the buffer hole along the left-right direction and fixed to the left end of the second compensation spring, and the left side surface of the push block is rotatably connected to an adjusting bolt, and the outer surface of the adjusting bolt is threadedly connected to a cover plate, and the cover plate is fixed to the driving block.

[0015] Furthermore, an L-frame is fixedly provided on the front side of the machine body, and a detection camera is fixedly provided on the L-frame along the front-to-back direction.

[0016] 1. The present invention sets a main roller assembly, a centering roller assembly and a driving part. When the device is used, the wheel is placed between the right ends of the two centering roller assemblies and the right end of the main roller assembly by a mechanical arm, and then the main roller assembly is driven to move to the right by the main hydraulic telescopic rod, so that the right end of the main roller assembly and the right ends of the two centering roller assemblies move inward synchronously to clamp the tread of the wheel. When the right end of the main roller assembly and the right ends of the two centering roller assemblies move inward synchronously, there is an inscribed circle at any position, and the inscribed circles are concentric, thereby ensuring that the tread of the wheel is effectively clamped.

[0017] 2. The present invention provides a centering roller, a guide rod, a base plate and a first compensation spring. When the device is used, if the tread of the wheel is a regular circle, when the centering roller and the main roller clamp the wheel, the centering roller is squeezed so that the mounting block, the guide rod and the base plate move upward until the upper end surface of the base plate contacts the lower end surface of the limiting ring, and the circumferential surface of the centering roller forms a rigid contact with the tread of the wheel; if the tread of the wheel is a slightly irregular circle, when the centering roller and the main roller clamp the wheel, if the circumferential surface of the centering roller just contacts the irregular depression of the wheel, the centering roller moves downward under the push of the first compensation spring until the circumferential surface of the centering roller contacts the tread of the wheel, and the circumferential surface of the centering roller forms a flexible contact with the tread of the wheel, effectively maintaining the smooth rotation of the wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a front view structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the wheel in the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the main hydraulic telescopic rod in the present invention; Figure 5 It is a schematic diagram of the front view structure of the main hydraulic telescopic rod in the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the bearing seat in the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the follower plate in the present invention; Figure 8 It is a front view structural schematic diagram of the follower plate in the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the articulated arm in the present invention; Fig.10 It is a front view structural schematic diagram of the articulated arm in the present invention; Fig.11 It is a schematic diagram of the three-dimensional structure of the driving rod in the present invention; Fig.12 It is a schematic diagram of the three-dimensional structure of the main roller in the present invention; Fig.13 It is a schematic diagram of the three-dimensional structure of the shell in the present invention; Fig.14 It is a schematic diagram of the three-dimensional structure inside the shell of the present invention; Fig.15 It is a three-dimensional structural schematic diagram of the threaded column and the guide rod in the present invention in a separated state; Fig.16 It is a schematic diagram of the three-dimensional structure of the fixing block in the present invention; Fig.17It is a three-dimensional structural schematic diagram of the slide rail and the mounting plate in the separated state in the present invention.

[0019] In the figure, 1, machine body; 2, mounting groove; 7, wheel; 10, main roller assembly; 11, centering roller assembly; 12, main hydraulic telescopic rod; 13, articulated arm; 14, centering roller; 15, driving rod; 16, main roller; 17, driving block; 18, cam surface; 19, follower plate; 20, arc hole; 21, adaptation hole; 22, main pin column; 23, auxiliary pin column; 24, housing; 25, mounting block; 26, guide rod; 27, bottom plate; 28, first compensation spring; 29, limit ring; 30, clamping plate; 31, slider; 32, second compensation spring; 33, Limit block; 34, through hole; 35, adjustment plate; 36, threaded column; 37, guide groove; 38, guide block; 39, buffer hole; 40, push block; 41, adjustment bolt; 42, cover plate; 43, first rotating axis; 44, first bushing; 45, second rotating axis; 46, bearing seat; 58, L frame; 59, detection camera; 60, mounting plate; 61, side plate; 62, connecting plate; 63, slide rail; 64, slide groove; 65, fixing bolt; 66, fixing block; 67, top screw; 68, adjusting bolt; 69, trapezoidal block; 70, vertical bolt; 71, avoidance groove. DETAILED DESCRIPTION

[0020] See also Figure 1-17 The present invention is described in detail below with reference to the accompanying drawings and embodiments: The synchronous centering mechanism of the wheel rolling mill described in the present invention comprises a main roller assembly 10 slidably arranged in the installation groove 2 of the machine body 1 along the left-right direction and a centering roller assembly 11 symmetrically arranged relative to the main roller assembly 10 along the up-down direction, and the two centering roller assemblies 11 are both hinged to the machine body 1; a driving part is arranged on the main roller assembly 10, and the driving part is used to simultaneously drive the left ends of the two centering roller assemblies 11 to rotate when the main roller assembly 10 moves to the right, so that the right ends of the two centering roller assemblies 11 and the right end of the main roller assembly 10 move inward synchronously, and at any position during this process, the right ends of the two centering roller assemblies 11 and the right end of the main roller assembly 10 are always tangent to the circumferential surface of the corresponding virtual circle, and the inscribed circles of the right ends of the two centering roller assemblies 11 and the right end of the main roller assembly 10 are always concentric; a main hydraulic telescopic rod 12 is arranged at the left end of the main roller assembly 10, and the main hydraulic telescopic rod 12 is used to drive the main roller assembly 10 to move left and right.

[0021] When the main roller assembly 10 moves to the right, it drives the driving part to move to the right synchronously, so that the driving part synchronously drives the left ends of the two centering roller assemblies 11 to rotate, and then the right ends of the two centering roller assemblies 11 and the right end of the main roller assembly 10 move synchronously towards each other, so as to achieve the purpose of synchronous inward movement of the right end of the main roller assembly 10 and the right ends of the two centering roller assemblies 11; when in use, the wheel 7 is placed between the right ends of the two centering roller assemblies 11 and the right end of the main roller assembly 10 by the mechanical arm, and then the main roller assembly 10 is driven to move to the right by the main hydraulic telescopic rod 12, so as to achieve the purpose of synchronous inward movement of the right end of the main roller assembly 10 and the right ends of the two centering roller assemblies 11 to clamp the tread of the wheel 7, and there is an inscribed circle at any position when the right end of the main roller assembly 10 and the right ends of the two centering roller assemblies 11 move synchronously inward, and the inscribed circles are concentric, so as to ensure that the tread of the wheel 7 is effectively clamped.

[0022] In this embodiment, the centering roller assembly 11 includes an articulated arm 13 and a centering roller 14 rotatably connected to the right end of the articulated arm 13. The middle section of the articulated arm 13 is hinged to the machine body 1. The driving part moves to the right to drive the left end of the articulated arm 13 to cause the right end of the articulated arm 13 to rotate downward.

[0023] In this embodiment, the main roller assembly 10 includes a driving rod 15, and a main roller 16 rotatably connected to the right end of the driving rod 15, the left end of the driving rod 15 is fixedly arranged with the output end of the main hydraulic telescopic rod 12, the driving rod 15 is located in the mounting groove 2 of the machine body 1 and is slidably arranged with the machine body 1 along the left and right directions, the driving part includes a driving block 17 fixedly arranged on the driving rod 15, the upper and lower parts of the right side surface of the driving block 17 are provided with cam surfaces 18, and a follower mechanism is arranged on the articulated arm 13. The follower mechanism is used to keep the left end of the articulated arm 13 in contact with the cam surface 18 when the driving block 17 moves left and right; when the main hydraulic telescopic rod 12 pushes the driving rod 15 and the main roller 16 to move rightward, it also drives the driving block 17 to move rightward, and the driving block 17 drives the left end of the articulated arm 13 to rotate through the cam surface 18, so that the right ends of the two articulated arms 13 rotate close to each other, and then drive the two centering rollers 14 to rotate close to each other, so that the two centering rollers 14 and the main rollers 16 move rightward. The rollers 16 move inward synchronously, and at any position in this process, the circumferential surfaces of the two centering rollers 14 and the circumferential surfaces of the main rollers 16 are always tangent to the circumferential surfaces of the corresponding virtual circles, and the inscribed circles of the two centering rollers 14 and the main rollers 16 are always concentric; when the main hydraulic telescopic rod 12 drives the driving block 17 to move left, the driving block 17 drives the articulated arm 13 to rotate through the follower mechanism, so that the left end of the articulated arm 13 is always in contact with the cam surface 18, thereby making the right ends of the two articulated arms 13 The movable centering rollers 14 move away from each other to achieve the purpose of opening the centering mechanism; the cam surface 18 is a continuous and smooth simulation curve. When the driving block 17 moves left and right, the left end of the articulated arm 13 is always in contact with the cam surface 18 of the driving block 17. The cam surface 18 makes the moving position of the centering roller 14 at the right end of the articulated arm 13 always correspond to the moving position of the main roller 16, so that the circumferential surfaces of the two centering rollers 14 and the circumferential surface of the main roller 16 are tangent to a virtual circumferential surface.

[0024] In this embodiment, the follower mechanism includes two follower plates 19, the left end of each follower plate 19 is hinged to the body 1, the middle part of each follower plate 19 is provided with an arc hole 20 along the left and right directions, and the right part of each follower plate 19 is provided with an adaptation hole 21; the front side surface of each driving block 17 is fixedly provided with a main pin column 22 located in the corresponding arc hole 20, and the left part of the front side surface of each articulated arm 13 is fixedly provided with a secondary pin column 23 located in the corresponding adaptation hole 21; when in use, when the driving block 17 moves to the right, the driving block 17 drives the left end of the articulated arm 13 to rotate through the cam surface 18, thereby causing the right end of the articulated arm 13 to move closer to each other, and at the same time, the driving block 17 drives the main pin column 22 to move straight to the right, and due to the relationship of the arc hole 20, the follower The right ends of the plates 19 move away from each other, so that the follower plate 19 moves along with the left end of the articulated arm 13 without interfering with the movement of the articulated arm 13; when the drive block 17 moves to the left, since the cam surface 18 of the drive block 17 is away from the left end of the articulated arm 13, the main pin 22 moves linearly to the left at this time. Due to the relationship of the arc hole 20, the main pin 22 drives the right ends of the follower plate 19 to move closer to each other, so that the right end of the follower plate 19 drives the left end of the articulated arm 13 to move closer to each other through the cooperation of the sub-pin 23 and the adaptation hole 21, so that the left end of the articulated arm 13 is always in contact with the cam surface 18 of the drive block 17, and then the right end of the articulated arm 13 drives the centering rollers 14 to move away from each other, thereby achieving the purpose of opening the centering mechanism and facilitating the removal of the wheel 7.

[0025] The setting of the arc hole 20 and the adaptation hole 21 of the above-mentioned follower plate 19 must meet two conditions. When the driving block 17 moves to the right, the follower plate 19 follows the movement without interfering with the movement of the left end of the articulated arm 13; when the driving block 17 moves to the left, the follower plate 19 drives the left end of the articulated arm 13 to move closer to each other, so that the left end of the articulated arm 13 is always in contact with the corresponding cam surface 18.

[0026] In actual use, the tread of the wheel 7 that has just been hot-forged may be a slightly irregular circle. Since the circumferential surfaces of the main roller 16 and the two centering rollers 14 are always tangent to the circumferential surface of a virtual circle when moving inward, a certain centering roller 14 or the main roller 16 may not contact the tread of the wheel 7, which will cause the wheel 7 to rotate unsteadily. In order to solve this problem, in this embodiment, a first compensation mechanism is provided between the articulated arm 13 and the centering roller 14; a second compensation mechanism is provided between the driving rod 15 and the main roller 16; the first compensation mechanism is used to drive the centering roller 14 to move inward and contact the tread of the wheel 7 when the centering roller 14 is not in contact with the tread of the wheel 7 when clamping the wheel 7; the second compensation mechanism is used to drive the main roller 16 to move inward and contact the tread of the wheel 7 when the main roller 16 is not in contact with the tread of the wheel 7 when clamping the wheel 7, so as to ensure smooth rotation of the wheel 7.

[0027] In this embodiment, the angle position word is Fig.14 The first compensation mechanism includes a shell 24 fixedly arranged at the right end of the articulated arm 13, the centering roller 14 is rotatably connected to the inside of the mounting block 25, and a guide rod 26 is fixedly arranged on the upper end surface of the mounting block 25, and the guide rod 26 is penetrated in the shell 24 along the up-down direction; a bottom plate 27 is fixedly arranged on the guide rod 26 located in the shell 24, and a first compensation spring 28 is sleeved on the guide rod 26 located in the shell 24, and the bottom end of the first compensation spring 28 is fixedly arranged with the bottom plate 27, and a limit ring 29 is fixedly arranged in the shell 24 above the bottom plate 27; the mounting block 25 and the right end surface of the articulated arm 13 are slidably arranged in the up-down direction; if the tread of the wheel 7 is a regular circle, when the centering roller 14 and the main rolling roller 16 clamp the wheel 7, the centering roller 14 is squeezed so that the mounting block 25, the guide rod 26 and the bottom plate 27 move upward until the upper end surface of the bottom plate 27 is aligned with the limit ring 29 The lower end surface of the centering roller 14 contacts with the tread of the wheel 7, and the circumferential surface of the centering roller 14 forms a rigid contact with the tread of the wheel 7; if the tread of the wheel 7 is a slightly irregular circle, when the centering roller 14 and the main roller 16 clamp the wheel 7, if the circumferential surface of the centering roller 14 just contacts with the irregular depression of the wheel 7, the centering roller 14 moves downward under the push of the first compensation spring 28 until the circumferential surface of the centering roller 14 contacts with the tread of the wheel 7, and the circumferential surface of the centering roller 14 and the tread of the wheel 7 form a flexible contact, effectively maintaining the smooth rotation of the wheel 7; when the wheel 7 is hot-rolled and rotated, the irregular part of the wheel 7 transfers along the circumference, and the centering roller 14 and the main roller 16 will periodically make adaptive compensatory contact to ensure the smooth rotation of the wheel 7; if one of the centering rollers 14 contacts with the irregular protrusion of the wheel 7, the other centering roller 14 and the main roller 16 will make compensatory contact.

[0028] In this embodiment, the main roller 16 is rotatably connected in the two clamping plates 30, and the driving rod 15 is slidably arranged in the two clamping plates 30 along the left and right directions. The second compensation mechanism includes a slider 31 slidably arranged on the upper and lower end surfaces of the driving rod 15 along the left and right directions, and each slider 31 is fixedly arranged with each clamping plate 30. A second compensation spring 32 is fixedly arranged between the driving block 17 and each slider 31, and a limit block 33 is fixedly arranged on the upper and lower end surfaces of the driving rod 15. A through hole 34 is opened on the limit block 33, and the second compensation spring 32 passes through the through hole 34 of the limit block 33; if the tread of the wheel 7 is a regular circle, when the centering roller 14 and the main roller 16 clamp the wheel 7, the main roller 16 is squeezed so that the main roller 16 slides to the left along the driving rod 15 through the clamping plate 30 until the slider 31 conflicts with the right side of the limit block 33, and the main roller 16 is pressed. The circumferential surface of the roller 16 forms a rigid contact with the tread of the wheel 7, effectively maintaining the smooth rotation of the wheel 7; if the tread of the wheel 7 is a slightly irregular circle, when the centering roller 14 and the main roller 16 clamp the wheel 7, if the circumferential surface of the main roller 16 just contacts the irregular depression of the wheel 7, the main roller 16 moves to the right under the push of the second compensation spring 32 until the circumferential surface of the main roller 16 contacts the tread of the wheel 7, and the circumferential surface of the main roller 16 forms a flexible contact with the tread of the wheel 7, effectively maintaining the smooth rotation of the wheel 7; when the wheel 7 is hot-rolled and rotated, the irregular part of the wheel 7 transfers along the circumference, and the centering roller 14 and the main roller 16 will periodically make adaptive compensatory contact to ensure the smooth rotation of the wheel 7; if one of the main rollers 16 contacts the irregular protrusion of the wheel 7, the other two centering rollers 14 make compensatory contact.

[0029] In order to achieve the purpose of adjusting the preload force of the first compensation spring 28 during use, in the present embodiment, an adjustment plate 35 is fixedly provided at the top end of the first compensation spring 28, and the adjustment plate 35 is slidably arranged in the shell 24 along the up and down directions. The upper end surface of the adjustment plate 35 is rotatably connected with a threaded column 36, and the outer surface of the threaded column 36 is threadedly connected to the shell 24; the guide rod 26 is both sleeved in the adjustment plate 35 and the threaded column 36; in use, if the elasticity of the first compensation spring 28 weakens, the threaded column 36 can be rotated to move downward along the shell 24, and then the threaded column 36 drives the adjustment plate 35 to move downward, thereby compressing the first compensation spring 28 to increase the preload force of the first compensation spring 28.

[0030] In this embodiment, a guide groove 37 is formed on the outer surface of the guide rod 26 in the up and down directions, and a guide block 38 adapted to the guide groove 37 is fixedly provided on the inner side wall of the adjustment plate 35. When the adjustment plate 35 moves up and down, the guide block 38 slides up and down in the guide groove 37 to limit the rotation of the adjustment plate 35.

[0031] In order to achieve the purpose of adjusting the preload force of the second compensation spring 32 during use, in the present embodiment, a buffer hole 39 is opened in the left-right direction at the position corresponding to the driving block 17 and the second compensation spring 32, and a push block 40 is slidably arranged in the left-right direction in the buffer hole 39 and fixed to the left end of the second compensation spring 32, and an adjusting bolt 41 is rotatably connected to the left side of the push block 40, and a cover plate 42 is threadedly connected to the outer surface of the adjusting bolt 41, and the cover plate 42 is fixed to the driving block 17; in use, if the elasticity of the second compensation spring 32 weakens, the adjusting bolt 41 can be rotated to move the adjusting bolt 41 to the right, thereby causing the adjusting bolt 41 to drive the push block 40 to move to the right, thereby compressing the second compensation spring 32 to increase the preload force of the second compensation spring 32.

[0032] In this embodiment, a first rotating shaft 43 is fixedly arranged in the upper articulated arm 13, and the parts of the first rotating shaft 43 located on both sides of the upper articulated arm 13 are rotatably connected to the first shaft sleeve 44, and each first shaft sleeve 44 is fixed to the body 1; the upper articulated arm 13 rotates in the first shaft sleeve 44 through the first rotating shaft 43.

[0033] In this embodiment, a second rotating shaft 45 is fixedly installed in the lower articulated arm 13, and both ends of the second rotating shaft 45 are rotatably connected to bearing seats 46, and each bearing seat 46 is fixed to the body 1; the lower articulated arm 13 rotates in the bearing seat 46 through the second rotating shaft 45.

[0034] In this embodiment, an L-frame 58 is fixedly provided on the front side of the machine body 1, and a detection camera 59 is fixedly provided on the L-frame 58 along the front-to-back direction; the centers of the inscribed circles of the main rolling roller 16 and the two centering rollers 14 are fixed; when the wheel 7 is hot-rolled, when the hot-rolling of the wheel 7 meets the requirements, the wheel 7 is detected by the detection camera 59, and the trajectory of the center of the wheel 7 during the rotation process is calculated. The trajectory of the center of the wheel 7 during the rotation process is an irregular figure around the centers of the inscribed circles of the main rolling roller 16 and the two centering rollers 14. The farthest distance between the irregular figure and the centers of the inscribed circles of the main rolling roller 16 and the two centering rollers 14 is calculated. If this distance is within the set range, it means that the tread of the wheel 7 is a circle that meets the requirements; if this distance exceeds the set range, it means that the circular irregularity of the tread of the wheel 7 exceeds the range, and hot rolling needs to be continued.

[0035] In this embodiment, the mounting block 25 includes a mounting plate 60 and two side plates 61 arranged on the lower end surface of the mounting plate 60, and the centering roller 14 is rotatably connected between the two side plates 61; the upper end surface of the mounting plate 60 is fixedly arranged with the shell 24; a connecting plate 62 is fixedly arranged between the two side plates 61, and an adjustment structure is arranged between the connecting plate 62 and the mounting plate 60, and the adjustment mechanism is used to adjust the front and rear positions of the two side plates 61 and the connecting plate 62 relative to the mounting plate 60, so that the centering roller 14 adapts to the position of the wheel 7.

[0036] In this embodiment, the adjustment mechanism includes a slide rail 63 fixedly arranged on the upper end surface of the connecting plate 62 along the front-to-back direction, a slide groove 64 adapted to the slide rail 63 is opened on the lower end surface of the mounting plate 60 along the front-to-back direction, a fixing block 66 is fixedly arranged on the front and rear sides of the mounting plate 60 by two fixing bolts 65, a top screw 67 and an adjusting bolt 68 are arranged on the fixing block 66, the top screw 67 is threadedly connected to the fixing block 66, the adjusting bolt 68 is rotatably connected to the fixing block 66, the head of the top screw 67 abuts against the end surface of the slide rail 63, and the adjusting bolt 68 is rotatably connected to the slide rail 63. The threaded hole opened on the end face is threadedly connected; when adjusting the front and rear position of the centering roller 14, first screw the top screw 67 so that the top screw 67 withdraws outward from the inside of the fixing block 66, thereby disengaging the head of the top screw 67 from the end face of the slide rail 63, and then rotate the adjusting bolt 68 to make the slide rail 63 move back and forth in the slide groove 64 of the mounting plate 60, and then the slide rail 63 drives the centering roller 14 to move back and forth relative to the mounting plate 60 through the connecting plate 62 and the two side plates 61, thereby achieving the purpose of adjusting the front and rear position of the centering roller 14 to better contact the tread of the wheel 7.

[0037] In order to facilitate the disassembly and installation of the slide rail 63 and the mounting plate 60, in the present embodiment, the slide rail 63 is an inverted isosceles trapezoidal structure, the slide groove 64 is a right-angled trapezoidal structure, and a trapezoidal block 69 is fixedly provided along the right-angled edge in the slide groove 64 in the front-to-back direction, and the space formed by the hypotenuse of the trapezoidal block 69 and the slide groove 64 is adapted to the slide rail 63; the trapezoidal block 69 is fixed to the mounting plate 60 by a vertical bolt 70; when disassembling, first remove the fixing bolt 65, rotate the adjusting bolt 68 to disengage from the slide rail 63, and then remove the vertical bolt 70 to remove the trapezoidal block 69, at which time the slide rail 63 can be disengaged from the slide groove 64, thereby achieving the purpose of disassembling the centering roller 14; when installing, first pass the two side plates 61 and the connecting plate 62 through the slide rail 63 is placed in the slide groove 64, and then the trapezoidal block 69 is installed and fixed in the slide groove 64 of the mounting plate 60 by the vertical bolt 70, that is, the installation of the centering roller 14 is realized, and then the fixing block 66 is fixed to the mounting plate 60 by the fixing bolt 65, and the top screw 67 is installed on the mounting plate 60. When installing the fixing block 66, it is necessary to first screw the adjusting bolt 68 into the threaded hole of the slide rail 63 so that the fixing block 66 can fit with the end face of the mounting plate 60, and then fix the fixing block 66; the head of the top screw 67 contacts the slide rail 63 to achieve the purpose of locking the slide rail 63; an avoidance groove 71 is opened on the side of the shell 24, and the nut of the vertical bolt 70 is located in the avoidance groove 71, which is convenient for disassembly and installation of the vertical bolt 70.

[0038] The working principle of the present invention is as follows: when in use, the calcined wheel 7 is clamped by a mechanical arm and placed between two centering rollers 14 and a main rolling roller 16. When the driving rod 15 is pushed to move to the right by the main hydraulic telescopic rod 12, the driving block 17 is driven to move to the right. The driving block 17 drives the left end of the articulated arm 13 to rotate through the cam surface 18, thereby causing the right end of the articulated arm 13 to move closer to each other; so that the two centering rollers 14 and the main rolling roller 16 move inward to clamp the tread of the wheel 7. The wheel 7 rotates during hot rolling, driving the main rolling roller 16 and the centering roller 14 to rotate.

[0039] When the drive block 17 moves to the left, since the cam surface 18 of the drive block 17 is away from the left end of the articulated arm 13, the main pin 22 moves linearly to the left at this time. Due to the relationship of the arc hole 20, the main pin 22 drives the right end of the follower plate 19 to move closer to each other, so that the right end of the follower plate 19 drives the left end of the articulated arm 13 to move closer to each other through the cooperation of the sub-pin 23 and the adaptation hole 21, so that the left end of the articulated arm 13 is always in contact with the cam surface 18 of the drive block 17, and then the right end of the articulated arm 13 drives the centering rollers 14 to move away from each other, thereby achieving the purpose of opening the centering mechanism and facilitating the removal of the wheel 7.

Claims

1. A synchronous centering mechanism for a wheel rolling mill, characterized in that: The machine body (1) comprises a main roller assembly (10) slidably arranged in a mounting groove (2) of a machine body (1) in a left-right direction, and a centering roller assembly (11) symmetrically arranged relative to the main roller assembly (10) in an up-down direction, wherein the two centering roller assemblies (11) are both hinged to the machine body (1); a driving unit is arranged on the main roller assembly (10), and the driving unit is used to simultaneously drive the left ends of the two centering roller assemblies (11) to rotate when the main roller assembly (10) moves to the right, thereby causing the right ends of the two centering roller assemblies (11) to rotate. The right ends of the two centering roller assemblies (11) and the right end of the main roller assembly (10) move inward synchronously, and at any position during this process, the right ends of the two centering roller assemblies (11) and the right end of the main roller assembly (10) are always tangent to the circumferential surface of the corresponding virtual circle, and the inscribed circles of the right ends of the two centering roller assemblies (11) and the right end of the main roller assembly (10) are always concentric; and a main hydraulic telescopic rod (12) is provided at the left end of the main roller assembly (10), and the main hydraulic telescopic rod (12) is used to drive the main roller assembly (10) to move left and right.

2. The synchronous centering mechanism for a wheel rolling mill according to claim 1, characterized in that: The centering roller assembly (11) comprises an articulated arm (13) and a centering roller (14) rotatably connected to the right end of the articulated arm (13); the middle section of the articulated arm (13) is articulated to the machine body (1).

3. The synchronous centering mechanism for a wheel rolling mill according to claim 2, characterized in that: The main roller assembly (10) comprises a driving rod (15) and a main roller (16) rotatably connected to the right end of the driving rod (15); the left end of the driving rod (15) is fixedly arranged with the output end of the main hydraulic telescopic rod (12); the driving rod (15) is located in the mounting groove (2) of the machine body (1) and is slidably arranged with the machine body (1) in the left and right directions; the driving part comprises a driving block (17) fixedly arranged on the driving rod (15); the upper and lower parts of the right side surface of the driving block (17) are both provided with cam surfaces (18); and a follower mechanism is arranged on the articulated arm (13); the follower mechanism is used to keep the left end of the articulated arm (13) in contact with the cam surface (18) at all times when the driving block (17) moves left and right.

4. The synchronous centering mechanism for a wheel rolling mill according to claim 3, characterized in that: The follower mechanism comprises two follower plates (19), the left end of each follower plate (19) is hinged to the body (1), the middle part of each follower plate (19) is provided with an arc hole (20) in the left-right direction, and the right part of each follower plate (19) is provided with an adaption hole (21); the front side surface of each driving block (17) is fixedly provided with a main pin column (22) located in the corresponding arc hole (20), and the left part of the front side surface of each articulated arm (13) is fixedly provided with a secondary pin column (23) located in the corresponding adaption hole (21).

5. The synchronous centering mechanism for a wheel rolling mill according to claim 3, characterized in that: A first compensation mechanism is provided between the articulated arm (13) and the centering roller (14); a second compensation mechanism is provided between the driving rod (15) and the main roller (16); the first compensation mechanism is used to drive the centering roller (14) to move inwards and contact the tread of the wheel (7) when the wheel (7) is clamped and the centering roller (14) is not in contact with the tread of the wheel (7); the second compensation mechanism is used to drive the main roller (16) to move inwards and contact the tread of the wheel (7) when the wheel (7) is clamped and the main roller (16) is not in contact with the tread of the wheel (7).

6. The synchronous centering mechanism for a wheel rolling mill according to claim 5, characterized in that: The first compensation mechanism comprises a housing (24) fixedly arranged at the right end of the hinged arm (13); the centering roller (14) is rotatably connected to the inside of the mounting block (25); a guide rod (26) is fixedly arranged on the upper end surface of the mounting block (25); the guide rod (26) is passed through the housing (24) in the up-down direction; a bottom plate (27) is fixedly arranged on the guide rod (26) located in the housing (24); a first compensation spring (28) is sleeved on the guide rod (26) located in the housing (24); the bottom end of the first compensation spring (28) is fixedly arranged on the bottom plate (27); and a limit ring (29) is fixedly arranged in the housing (24) above the bottom plate (27).

7. The synchronous centering mechanism for a wheel rolling mill according to claim 5, characterized in that: The main roller (16) is rotatably connected in the two clamping plates (30), the driving rod (15) is slidably arranged in the two clamping plates (30) along the left-right direction, the second compensation mechanism comprises a slider (31) slidably arranged on the upper end surface and the lower end surface of the driving rod (15) along the left-right direction, each slider (31) is fixedly arranged with each clamping plate (30), a second compensation spring (32) is fixedly arranged between the driving block (17) and each slider (31), and a limit block (33) is fixedly arranged on the upper end surface and the lower end surface of the driving rod (15), a through hole (34) is opened on the limit block (33), and the second compensation spring (32) passes through the through hole (34) of the limit block (33).

8. The synchronous centering mechanism for a wheel rolling mill according to claim 6, characterized in that: An adjustment plate (35) is fixedly arranged at the top end of the first compensation spring (28). The adjustment plate (35) is slidably arranged in the housing (24) along the up-down direction. The upper end surface of the adjustment plate (35) is rotatably connected to a threaded column (36). The outer surface of the threaded column (36) is threadedly connected to the housing (24). The guide rod (26) is sleeved in the adjustment plate (35) and the threaded column (36).

9. The synchronous centering mechanism for a wheel rolling mill according to claim 7, characterized in that: A buffer hole (39) is provided in the left-right direction at a position corresponding to the driving block (17) and the second compensation spring (32); a push block (40) is slidably arranged in the left-right direction and fixed to the left end of the second compensation spring (32); an adjusting bolt (41) is rotatably connected to the left side of the push block (40); a cover plate (42) is threadedly connected to the outer surface of the adjusting bolt (41); and the cover plate (42) is fixed to the driving block (17).

10. The synchronous centering mechanism for a wheel rolling mill according to claim 1, characterized in that: An L-frame (58) is fixedly arranged on the front side of the machine body (1), and a detection camera (59) is fixedly arranged on the L-frame (58) along the front-back direction.

Images