Horizontal linkage type expanding machine for large ring piece
The horizontal linkage type ring expander machine addresses the issue of circularity errors in large ring forging by using movable fan-shaped blocks and interchangeable sleeves to achieve precise circularity correction, minimizing scrap and material waste.
Patent Information
- Application Number
- CN202422056498.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-23
AI Technical Summary
Existing ring forging equipment cannot achieve high-precision molding of large ring parts, resulting in high scrapping rate of ring parts and serious material waste.
A large-scale ring-piece horizontal linkage diameter-strengthening machine is designed. Through the fixed load-bearing platform, positioning column, fan-shaped block and outer lining board group, the main drive device and the rotating table are used to correct the roundness error of the large ring after the ring forged to ensure that the roundness error after correction is less than 3mm.
It greatly reduces the scrap rate and material waste rate of large ring parts, saves production costs, and achieves high-precision roundness correction effect.
Smart Images
Figure CN223097683U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of large ring sizing technology, in particular to a horizontal linkage ring expanding machine for large rings. Background Art
[0002] With the development of fields such as wind power generation, marine equipment, nuclear power, and aviation, there is a large demand for large rings with large diameters and large wall thicknesses as raw materials. Large rings are obtained by ring forging equipment. At present, the existing ring forging equipment cannot achieve the goal of high-precision forming of large rings. Therefore, the cross-section tolerance of the large rings obtained after ring forging is relatively large. For such large rings, only after natural cooling can they be machined to qualified dimensional tolerances by machining equipment. During the machining process, if the machining allowance left for the large ring is small, it will cause the turning machining to not reach the required dimensional requirements, resulting in the scrapping of the ring. If the machining allowance is increased, it will cause serious material waste. Moreover, the materials of the rings are usually high-priced alloy steels, which greatly increases the production cost. Summary of the Utility Model
[0003] The technical problem to be solved by the utility model is to provide a horizontal linkage ring expanding machine for large rings that can correct the roundness error of large rings after ring forging and has a good correction effect.
[0004] To solve the problems of high rejection rate and serious material waste caused by large roundness error of large rings after ring forging, the utility model designs a horizontal linkage ring expanding machine for large rings used to correct the roundness error of large rings after ring forging. After correcting the large rings after ring forging with this horizontal linkage ring expanding machine for large rings, the roundness error of the large rings is less than 3 mm. Therefore, a smaller machining allowance can be reserved. The specific solution is as follows:
[0005] The horizontal linkage ring expanding machine for large rings includes: a load-bearing platform fixedly arranged on the foundation; the lower section of a positioning column placed vertically passes through a vertical installation through hole in the center of the load-bearing platform and is fixedly installed in the foundation. The positioning column extending outside the vertical installation through hole has a regular prism structure. Among them, the regular prism structure preferably has a regular octagonal prism structure. Each side surface of the regular prism structure is a bearing surface, and each bearing surface corresponds to a sector block. Each sector block is installed on the corresponding bearing surface through its corresponding main driving device, and each main driving device can drive the corresponding sector block to move horizontally along the vertical line direction of the bearing surface corresponding to the sector block, so as to approach or move away from the bearing surface corresponding to the sector block. Moreover, during the process of the respective sector blocks being driven to move by their corresponding main driving devices, the outer contour surfaces of the respective sector blocks are always located on the same circumferential surface.
[0006] The large ring horizontal linkage diameter expanding machine further includes: several groups of outer lining plate groups. The number of each first outer lining plate in the first group of outer lining plate groups is the same as the number of the sector blocks, and each first outer lining plate corresponds to one sector block respectively. Each first outer lining plate can be respectively fixed on the corresponding sector block or detached from the corresponding sector block through the first detachable connection structure. During the process of the main driving device driving and moving, the outer contour surfaces of the first outer lining plates are always located on the same circumferential surface; the number of each (n + 1)th outer lining plate in the (n + 1)th group of outer lining plate groups is the same as the number of each nth outer lining plate in the nth group of outer lining plate groups, and each (n + 1)th outer lining plate corresponds to one nth outer lining plate respectively. Each (n + 1)th outer lining plate can be respectively fixed on the corresponding nth outer lining plate or detached from the corresponding nth outer lining plate through the (n + 1)th detachable connection structure; during the process of the main driving device driving and moving, the outer contour surfaces of the (n + 1)th outer lining plates are always located on the same circumferential surface; n is an integer, and n = 1, 2, 3... Here, several groups of outer lining plate groups are designed, which can expand the applicable range of the large ring horizontal linkage diameter expanding machine, and can be applicable to the correction operation of large rings with the inner hole diameter in the range of φ5000mm to φ25000mm. During the actual use process, the number of groups of outer lining plate groups installed on the large ring horizontal linkage diameter expanding machine is determined according to the driving stroke of the main driving device and the inner hole diameter of the ring.
[0007] Wherein, the structures of the first detachable connection structure and the (n + 1)th detachable connection structure are the same. Here, their structures are preferably as follows: a clamping structure formed by the cooperation of a T-shaped block and a T-shaped groove and a fastening structure formed by the cooperation of a countersunk head hole and a countersunk head screw. The clamping structure formed by the cooperation of a T-shaped block and a T-shaped groove is a common structure in the machinery manufacturing industry, and the fastening structure formed by the cooperation of a countersunk head hole and a countersunk head screw is also a common structure in the machinery manufacturing industry. Therefore, it will not be elaborated here.
[0008] An outer lining plate bracket is fixedly arranged on the load-bearing platform. The outer diameter of the outer lining plate bracket is larger than the outer diameter of the load-bearing platform. Each group of outer lining plate groups fixed on the sector blocks can be supported by the outer lining plate bracket; because the whole size is very large, the downward acting force of each group of outer lining plate groups is also relatively large. Here, each group of outer lining plate groups is supported by setting the outer lining plate bracket.
[0009] A rotating table is sleeved on the load-bearing platform. A base is fixedly arranged on the foundation below the rotating table. A hydrostatic guide system is arranged between the bottom surface of the rotating table and the top surface of the base. A rotating driving device capable of driving the rotating table to rotate around its own axis is also arranged between the rotating table and the base. After injecting oil into the hydrostatic guide system, the rotating table is supported by the hydraulic film in the hydrostatic guide system.
[0010] Several ring supports are evenly spaced along the circumferential direction on the rotating table, and each ring support is installed on the rotating table through a corresponding radial displacement adjustment device. Among them, the radial displacement adjustment device belongs to a common displacement adjustment structure in the field, which is usually composed of a guide rail, a slider that can slide along the guide rail, and a plurality of bolts that can fix the slider on the guide rail. At this time, the bottom of the ring support is designed to be a slider structure, or a slider is installed at the bottom of the ring support, and a guide rail that matches the slider is installed on the rotating table, plus a plurality of bolts that can fix the slider on the guide rail. By loosening each bolt, the ring support can be pushed to slide along the guide rail, thereby adjusting the radial distance from the ring support to the center of the rotating table, and tightening each bolt can lock the position of the ring support. After adjusting the position of each ring support according to the size of the large ring, the large ring heated to about 750°C is hoisted by a crane and placed on each ring support. Since the temperature of the large ring is very high, the remaining exposed upper surface on the rotating table except the top of the ring support is covered with a heat insulation layer to ensure that the temperature is not transmitted downward.
[0011] Furthermore, in the aforementioned large-scale horizontal linkage expanding machine for ring parts, the structure of each fan-shaped block is as follows: one end of the fan-shaped block extends outward along the outer arc surface of the fan-shaped block to form a first extension arm in a fan shape, and the thickness of the first extension arm is less than the thickness of the fan-shaped block, thereby forming a vacant first notch under the first extension arm; the other end of the fan-shaped block extends outward along the position of the inner arc surface of the fan-shaped block to form a second extension arm in a fan shape, and the thickness of the second extension arm is less than the thickness of the fan-shaped block, thereby forming a vacant second notch above the second extension arm; the first extension arm of each fan-shaped block extends into the second notch of the adjacent fan-shaped block on the side where the first extension arm is located, and the second extension arm of each fan-shaped block extends into the first notch of the adjacent fan-shaped block on the side where the second extension arm is located.
[0012] Furthermore, in the aforementioned large-scale horizontal linkage expanding machine for rings, the structure of each main driving device is as follows: three cylinders are fixedly arranged at even intervals from top to bottom on the bearing surface of the regular prism structure, the cylinder body of each cylinder is fixed on the bearing surface, and the piston rod of each cylinder is parallel to the vertical line of the bearing surface, and the end of the piston rod of each cylinder is fixedly connected to the inner arc surface of the fan-shaped block corresponding to the bearing surface; a displacement sensor for measuring the displacement of the piston rod of the cylinder is respectively installed on each cylinder.
[0013] Furthermore, for the aforementioned large ring horizontal linkage diameter expanding machine, the structure of the rotation driving device is as follows: a speed reducer is fixedly arranged on the side wall of the base. The input end of the speed reducer is fixedly connected to the motor shaft of the motor fixed on the speed reducer. A driving gear is fixedly installed at the output end of the speed reducer. A driven gear meshing with the driving gear is fixedly installed on the rotating table. A guiding device for guiding the rotating table to rotate along the rotation track is further arranged on the periphery of the rotating table.
[0014] Furthermore, for the aforementioned large ring horizontal linkage diameter expanding machine, the guiding device is composed of several guiding mechanisms evenly spaced on the periphery of the rotating table. The structure of each guiding mechanism is as follows: a mounting seat is fixedly arranged on the foundation. Two centering pressure wheels are installed in the mounting seat. The two centering pressure wheels are in rolling contact with the outer circumferential side wall of the rotating table. Among them, the number of the guiding mechanisms is preferably set to six.
[0015] Furthermore, for the aforementioned large ring horizontal linkage diameter expanding machine, the foundation is located in a pit. At this time, the large ring horizontal linkage diameter expanding machine is also located in the pit. In addition, a guardrail is arranged around the periphery of the top of the pit to play a role in safety protection.
[0016] The beneficial effects of the present utility model are as follows: The plasticity of metal materials is the best within the plastic deformation temperature range. Therefore, when the large workpiece is subjected to roundness correction by the large ring horizontal linkage diameter expanding machine in the hot state of the workpiece, it can ensure that the overall comprehensive error of the roundness of the large ring after correction is less than 3 mm. The correction effect is very good, greatly reducing the rejection rate of large rings and the waste rate of materials, and saving costs. Description of the Drawings
[0017] Figure 1 is the cross-sectional structure schematic diagram of the large ring horizontal linkage diameter expanding machine described in the present utility model.
[0018] Figure 2 is Figure 1 the partial enlarged structure schematic diagram in
[0019] Figure 3 is Figure 2 the partial enlarged structure schematic diagram of part A in
[0020] Figure 4 is Figure 1 the partial structure schematic diagram in the top view direction.
[0021] Figure 5 is Figure 4 the position and connection schematic diagram among the regular prism structure, each oil cylinder, each sector block, and several groups of outer lining plate groups in
[0022] Figure 6 is Figure 5Schematic diagram of the partial enlarged structure therein.
[0023] Figure 7 is Figure 4 Schematic diagram of the partial enlarged structure of part B in
[0024] Wherein: 1, pit; 11, foundation; 2, load-bearing platform; 21, vertical installation through-hole; 3, positioning column; 31, regular prism structure; 32, bearing surface; 33, oil cylinder; 34, piston rod; 35, hydraulic station; 4, sector block; 41, first extension arm; 42, first notch; 43, second extension arm; 44, second notch; 5, outer lining plate bracket; 51, first outer lining plate; 52, second outer lining plate; 6, rotating table; 61, base; 62, hydrostatic guide system; 63, ring support; 7, mounting seat; 71, motor; 72, reduction gearbox; 73, driving gear; 74, driven gear; 75, centering pressure wheel; 8, large ring part. Specific embodiments
[0025] The technical solution of the present utility model will be further described in detail below with reference to the accompanying drawings and preferred embodiments. Embodiment 1
[0026] As Figure 1 , Figure 2 and Figure 4 shown, in this embodiment, the large ring part horizontal linkage expanding machine includes: a load-bearing platform 2 fixedly arranged on the foundation 11, the lower section of the vertically placed positioning column 3 passes through the vertical installation through-hole 21 in the center of the load-bearing platform 2 and is fixedly installed in the foundation 11, and the positioning column 3 extending out of the vertical installation through-hole 21 is a regular prism structure 31. Among them, the regular prism structure 31 preferably is a regular octagonal prism structure. Each side surface of the regular prism structure 31 is a bearing surface 32, and each bearing surface 32 corresponds to a sector block 4. Each sector block 4 is installed on the corresponding bearing surface 32 through its respective main driving device, and each main driving device can drive the corresponding sector block 4 to move horizontally along the perpendicular line direction of the bearing surface 32 corresponding to the sector block 4, so as to approach or move away from the bearing surface 32 corresponding to the sector block 4. And during the process of the respective sector blocks 4 being driven to move by their respective main driving devices, the outer contour surfaces of the respective sector blocks 4 are always located on the same circumferential surface, which is the condition for ensuring the roundness correction accuracy of the large ring part 8.
[0027] As Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6As shown, the large ring horizontal linkage expanding machine in this embodiment further includes: several groups of outer lining plate groups. The number of outer lining plate groups can be one group, two groups, three groups, or even more. For the convenience of description, the group of outer lining plate groups located in the innermost circle is defined as the first group of outer lining plate groups here, and then the second outer lining plate group, the third outer lining plate group... are defined in sequence from the inside to the outside.
[0028] Among them, the number of each first outer lining plate 51 in the first group of outer lining plate groups is the same as the number of the sector blocks 4, and each first outer lining plate 51 corresponds to one sector block 4 respectively. Each first outer lining plate 51 can be fixed to the corresponding sector block 4 or detached from the corresponding sector block 4 respectively through the first detachable connection structure. And during the process of the main driving device driving the movement, the outer contour surfaces of the first outer lining plates 51 fixed to the corresponding sector blocks 4 through the first detachable connection structure are always located on the same circumferential surface.
[0029] As Figure 4 , Figure 5 shows a schematic diagram of the installation of two groups of outer lining plate groups. The number of each second outer lining plate 52 in the second group of outer lining plate groups is the same as the number of each first outer lining plate 51 in the first group of outer lining plate groups, and each second outer lining plate 52 corresponds to one first outer lining plate 51 respectively. Each second outer lining plate 52 can be fixed to the corresponding first outer lining plate 51 or detached from the corresponding first outer lining plate 51 respectively through the second detachable connection structure. And during the process of the main driving device driving the movement, the outer contour surfaces of the second outer lining plates 52 fixed to the corresponding first outer lining plates 51 through the second detachable connection structure are always located on the same circumferential surface.
[0030] When it is necessary to install three groups or more groups of outer lining plate groups, the same principle applies. The number of each (n + 1)-th outer lining plate in the (n + 1)-th group of outer lining plate groups is the same as the number of each n-th outer lining plate in the n-th group of outer lining plate groups, and each (n + 1)-th outer lining plate corresponds to one n-th outer lining plate respectively. Each (n + 1)-th outer lining plate can be fixed to the corresponding n-th outer lining plate or detached from the corresponding n-th outer lining plate respectively through the (n + 1)-th detachable connection structure; and during the process of the main driving device driving the movement, the outer contour surfaces of the (n + 1)-th outer lining plates fixed to the corresponding n-th outer lining plates through the (n + 1)-th detachable connection structure are always located on the same circumferential surface; here n is an integer, and n = 1, 2, 3...
[0031] Among them, the structures of the first detachable connection structure and the (n + 1)-th detachable connection structure are the same. Here, their structures are preferably as follows: a clamping structure formed by the cooperation of a T-shaped block and a T-shaped groove, and a fastening structure formed by the cooperation of a countersunk hole and a countersunk screw. The clamping structure formed by the cooperation of a T-shaped block and a T-shaped groove is a common structure in the machinery manufacturing industry, and the fastening structure formed by the cooperation of a countersunk hole and a countersunk screw is also a common structure in the machinery manufacturing industry. Therefore, it will not be elaborated here. Here, a simple description is given for the first detachable connection structure. Among them, T-shaped blocks are designed on the first outer lining plate 51, and T-shaped grooves for cooperating with the T-shaped blocks are designed on the corresponding sector blocks 4. In this way, the first outer lining plate 51 can be hung on the corresponding sector block 4 by means of the T-shaped blocks being clamped in the T-shaped grooves. Then, countersunk holes are opened on the first outer lining plate 51, and the countersunk parts of the countersunk screws connecting the first outer lining plate 51 and the sector block 4 are sunk into the countersunk holes, ensuring that the countersunk screws do not protrude from the first outer lining plate 51. Usually, two countersunk screws correspond to one first outer lining plate 51. The same setting form is also adopted between the first outer lining plate 51 and the corresponding second outer lining plate 52, and the same setting form is also adopted between the second outer lining plate 52 and the corresponding third outer lining plate, and so on.
[0032] Here, several groups of outer lining plate groups are designed, which can expand the applicable range of the large ring horizontal linkage expanding machine, and can be applicable to the correction operation of large rings 8 with the inner hole diameter in the range of φ5000mm to φ25000mm. During the actual use process, the number of groups of outer lining plate groups installed on the large ring horizontal linkage expanding machine is determined according to the stroke driven by the main driving device and the inner hole diameter of the large ring 8. Table 1 gives the suitable dimensions and materials of the expanding rings of the large ring horizontal linkage expanding machine.
[0033] Table 1. Suitable Dimensions and Materials of the Expanding Rings of the Large Ring Horizontal Linkage Expanding Machine
[0034]
[0035] Limited by the size, it is impossible to make the load-bearing platform 2 very large. Therefore, an outer lining plate bracket 5 is fixedly arranged on the load-bearing platform 2. The outer diameter of the outer lining plate bracket 5 is larger than the outer diameter of the load-bearing platform 2, and each group of outer lining plate groups fixed on the respective sector blocks 4 can be supported by the outer lining plate bracket 5; because the overall size is very large, the downward acting force of each group of outer lining plate groups is also relatively large. Here, the outer lining plate bracket 5 is set to support each group of outer lining plate groups.
[0036] Such as Figure 2 and Figure 3As shown in the figure, a rotating table 6 is sleeved on a load-bearing platform 2. A base 61 is fixedly arranged on a foundation 11 below the rotating table 6. A hydrostatic guide system 62 is arranged between the bottom surface of the rotating table 6 and the top surface of the base 61. A rotation driving device capable of driving the rotating table 6 to rotate around its own axis is also arranged between the rotating table 6 and the base 61. After injecting oil into the hydrostatic guide system 62, the rotating table 6 is supported by a hydraulic film in the hydrostatic guide system 62. Here, it is sufficient to lift the rotating table 6 by about ten thousandths of an inch. Among them, the hydrostatic guide system 62 is a mature product. Here, only the hydrostatic guide system 62 is applied, so the structure of the hydrostatic guide system 62 will not be elaborated here.
[0037] As Figure 3 and Figure 4 shown in the figure, a number of ring supports 63 are evenly distributed along the circumferential direction on the rotating table 6. Each ring support 63 is installed on the rotating table 6 through a corresponding radial displacement adjusting device; a large ring heated to about 750°C is hoisted by a crane and placed on each ring support 63. Since the temperature of the large ring is very high, here, except for the top of the ring support 63 on the rotating table 6, the rest of the exposed upper surface is covered with a heat insulation layer to ensure that the temperature does not conduct downward.
[0038] The process of circularity correction using the above-mentioned large ring horizontal linkage type expanding machine is as follows:
[0039] First, determine the ring dimensions of the large ring 8 to be expanded: the inner hole diameter of the ring, the height of the ring, the wall thickness of the ring, and the material of the ring. Then, adjust the radial positions of each ring support 63 according to the ring dimensions so that each ring support 63 can just support the large ring 8. Then, select an appropriate number of groups of outer lining plate groups according to the ring dimensions and install the selected outer lining plate groups on each sector block 4.
[0040] Next, hoist the large ring 8 that has been heated to 700 - 750°C by a crane and hoist the large ring 8 onto the adjusted ring supports 63. Start the main driving device and drive each sector block 4 to expand synchronously outward through the main driving device, so that the outermost outer lining plate group on each sector block 4 gradually contacts, adheres to, and extrudes the inner hole wall of the large ring 8 to a set position and then returns. After repeating the expanding several times back and forth, drive the rotating table 6 to rotate by a certain angle through the rotation driving device, and then repeat the above expanding steps. After repeating the expanding several times back and forth, continue to drive the rotating table 6 to rotate by a certain angle, and then repeat the above steps until the circularity of the large ring 8 is corrected to the required value. During the expanding process, since the cooling rate of the large ring 8 is relatively fast, if the temperature drops to a temperature that is no longer suitable for expanding the large ring 8, it is necessary to lift out the large ring 8, reheat the large ring 8 to the most suitable plastic deformation region temperature in a reheat furnace, which is 700 - 750°C, and then send it back to the large ring horizontal linkage type expanding machine for the above-mentioned expanding process.
[0041] The plasticity of the metal material is optimal within the plastic deformation temperature range. Therefore, when the roundness of the large workpiece 8 is corrected by the large ring horizontal linkage expanding machine in the hot state of the workpiece, it can ensure that the overall comprehensive error of the roundness of the large ring after correction is less than 3 mm. The correction effect is very good, greatly reducing the scrap rate of the large ring 8 and the waste rate of materials, and saving costs. Embodiment 2
[0042] In this embodiment, on the basis of the structure of Embodiment 1, the structure of the sector block 4 is designed, and the structure between two adjacent sector blocks 4 is designed into a male-female engagement structure, so as to further improve the correction effect of the large ring horizontal linkage expanding machine. As Figure 5 、 Figure 6 and Figure 7 shown, the structure of each sector block 4 is: one end of the sector block 4 extends outward along the outer arc surface of the sector block 4 to form a first extension arm 41 in a sector shape. The thickness of the first extension arm 41 is less than the thickness of the sector block 4, so that a vacant first notch 42 is formed below the first extension arm 41; the other end of the sector block 4 extends outward along the position of the inner arc surface of the sector block 4 to form a second extension arm 43 in a sector shape. The thickness of the second extension arm 43 is less than the thickness of the sector block 4, so that a vacant second notch 44 is formed above the second extension arm 43; the first extension arm 41 of each sector block 4 extends into the second notch 44 of the adjacent sector block 4 on the side where the first extension arm 41 is located, and the second extension arm 43 of each sector block 4 extends into the first notch 42 of the adjacent sector block 4 on the side where the second extension arm 43 is located.
[0043] It should be noted that the lengths of the first extension arm 41 and the second extension arm 43 ensure that during the process of each sector block 4 being driven to move by its corresponding main driving device, the first extension arm 41 of each sector block 4 is always located in the second notch 44 of the adjacent sector block 4 on the side where the first extension arm 41 is located and will never break away, and the second extension arm 43 of each sector block 4 extends into the first notch 42 of the adjacent sector block 4 on the side where the second extension arm 43 is located and will never break away. With this male-female engagement structure, during the process of the main driving device driving the corresponding sector block 4 to move horizontally along the vertical line direction of the bearing surface 32 corresponding to the sector block 4, it can always ensure that the sector blocks 4 are concentrically linked, which is also the top priority for ensuring the roundness correction effect of the large ring.
[0044] Considering factors such as the layout of the overall structure, occupied space, and load-bearing of the sector block 4, the main driving device adopts an oil cylinder 33 here. Each main driving device uses three oil cylinders 33, with a total of twenty-four oil cylinders 33. Each main driving device corresponds to a set of hydraulic stations 35, with a total of eight sets of hydraulic stations 35. The specific structure is as follows: Three oil cylinders 33 are fixedly arranged at equal intervals from top to bottom on the bearing surface 32 of the regular prism structure 31. The cylinder bodies of the oil cylinders 33 are fixed on the bearing surface 32, and the piston rods 34 of the oil cylinders 33 are all parallel to the vertical line of the bearing surface 32. The end portions of the piston rods 34 of the oil cylinders 33 are fixedly connected to the inner arc surface of the sector block 4 corresponding to the bearing surface 32. By controlling the oil cylinders 33 to extend or retract synchronously, and then designing the male-female engagement structure between two adjacent sector blocks 4, the roundness correction effect of the large ring 8 can be further improved.
[0045] In addition, in order to more precisely control the range of diameter expansion adjustment, in this embodiment, a displacement sensor for measuring the displacement of the piston rod 34 of the oil cylinder 33 is respectively installed on each oil cylinder 33. Each displacement sensor and each hydraulic station 35 are controlled by a control system, so as to realize automatic operation. Embodiment III
[0046] Based on Embodiment I or Embodiment II, considering factors such as the smoothness, stability of the rotation of the rotating table 6, and the controllability of the rotation angle, this embodiment selects a motor 71 plus a gearbox 72 plus a gear drive as the power drive, and is supplemented by a number of centering rollers 75 to ensure that the rotating table 6 can rotate smoothly and will not deviate from the center.
[0047] As Figure 3 shown, the structure of the rotation driving device in this embodiment is as follows: A reduction gearbox 72 is fixedly arranged on the side wall of the base 61. The input end of the reduction gearbox 72 is fixedly connected to the motor shaft of the motor 71 fixed on the reduction gearbox 72. A driving gear 73 is fixedly installed at the output end of the reduction gearbox 72. A driven gear 74 meshing with the driving gear 73 is fixedly installed on the rotating table 6; A guiding device for guiding the rotating table 6 to rotate along the rotation trajectory is further provided on the periphery of the rotating table 6.
[0048] As Figure 2 、 Figure 3 、 Figure 4 and Figure 7 shown, the guiding device in this embodiment is composed of a number of guiding mechanisms evenly distributed on the periphery of the rotating table 6. The structure of each guiding mechanism is as follows: A mounting seat 7 is fixedly arranged on the foundation 11. Two centering rollers 75 are installed in the mounting seat 7, and the two centering rollers 75 are in rolling contact with the outer circumferential side wall of the rotating table 6. Among them, the number of the guiding mechanisms is preferably set to six, that is, fourteen centering rollers 75 are provided.
[0049] In addition, the large ring horizontal linkage diameter-expanding machine expands the diameter of the large ring 8 in a hot state, and the temperature of the ring is as high as 700 °C, which is very high. Therefore, during the diameter-expanding process, people cannot approach. To ensure safe production, a pit 1 is designed, and the foundation 11 is located in the pit 1. At this time, the large ring horizontal linkage diameter-expanding machine is also located in the pit 1. In addition, a guardrail 12 is arranged around the top of the pit 1 to play a safety protection role.
[0050] The above are only the preferred embodiments of the present invention, and do not limit the present invention in any other form. Any modification or equivalent change made according to the technical essence of the present invention still belongs to the scope protected by the present invention.
Claims
1. Horizontal linkage expanding machine for large ring parts, characterized in that: Comprising: A load-bearing platform fixedly arranged on the foundation, the lower section of the vertically placed positioning column passes through the vertical installation through-hole in the center of the load-bearing platform and is fixedly installed in the foundation, and the positioning column extending out of the vertical installation through-hole has a regular prism structure; each side surface of the regular prism structure is a bearing surface, and each bearing surface corresponds to a sector block. Each sector block is installed on the corresponding bearing surface through its corresponding main driving device, and each main driving device can drive the corresponding sector block to move horizontally along the vertical line direction of the bearing surface corresponding to the sector block, so as to approach or move away from the bearing surface corresponding to the sector block, and the outer contour surfaces of the sector blocks are always located on the same circumferential surface; Also comprising: several groups of outer lining plate groups. The number of each first outer lining plate in the first group of outer lining plate groups is the same as the number of sector blocks, and each first outer lining plate corresponds to a sector block respectively. Each first outer lining plate can be respectively fixed on the corresponding sector block or detached from the corresponding sector block through the first detachable connection structure, and the outer contour surfaces of the first outer lining plates respectively fixed on the corresponding sector blocks through the first detachable connection structure are always located on the same circumferential surface; the number of each (n + 1)th outer lining plate in the (n + 1)th group of outer lining plate groups is the same as the number of each nth outer lining plate in the nth group of outer lining plate groups, and each (n + 1)th outer lining plate corresponds to an nth outer lining plate respectively. Each (n + 1)th outer lining plate can be respectively fixed on the corresponding nth outer lining plate or detached from the corresponding nth outer lining plate through the (n + 1)th detachable connection structure, and the outer contour surfaces of the (n + 1)th outer lining plates respectively fixed on the corresponding nth outer lining plates through the (n + 1)th detachable connection structure are always located on the same circumferential surface; where n is an integer, and n = 1, 2, 3...; An outer lining plate bracket is fixedly arranged on the load-bearing platform. The outer diameter of the outer lining plate bracket is larger than the outer diameter of the load-bearing platform, and each group of outer lining plate groups fixed on the sector blocks can be supported by the outer lining plate bracket; A rotating platform is sleeved on the load-bearing platform. A base is fixedly arranged on the foundation below the rotating platform. A hydrostatic guide system is arranged between the bottom surface of the rotating platform and the top surface of the base. A rotating driving device capable of driving the rotating platform to rotate around its own axis is also arranged between the rotating platform and the base; A number of ring supports are evenly spaced along the circumferential direction on the rotating platform. Each ring support is installed on the rotating platform through the corresponding radial displacement adjusting device; an insulating layer covers the remaining exposed upper surface of the rotating platform except the top of the ring supports.
2. The horizontal linkage type diameter-expanding machine for large ring parts according to claim 1, wherein: The positioning column extending out of the vertical installation through-hole has a regular octagonal prism structure.
3. The large ring horizontal linkage diameter-expanding machine according to claim 1 or 2, characterized in that: The structure of each sector block is: one end of the sector block extends outward along the outer arc surface of the sector block to form a first extension arm in a sector shape. The thickness of the first extension arm is less than the thickness of the sector block, so as to form a vacant first notch below the first extension arm; The other end of the sector block extends outward along the position where the inner arc surface of the sector block is located to form a second extension arm in a sector shape. The thickness of the second extension arm is smaller than that of the sector block, so that a vacant second notch is formed on the second extension arm. The first extension arm of each sector block extends into the second notch of the adjacent sector block on the side where the first extension arm is located, and the second extension arm of each sector block extends into the first notch of the adjacent sector block on the side where the second extension arm is located.
4. The large ring horizontal linkage expanding machine according to claim 1 or 2, characterized in that: The structure of each main driving device is as follows: Three oil cylinders are fixedly arranged at equal intervals from top to bottom on the bearing surface of the regular prism structure. The cylinder bodies of the oil cylinders are fixed on the bearing surface, and the piston rods of the oil cylinders are all parallel to the vertical line of the bearing surface. The end parts of the piston rods of the oil cylinders are fixedly connected to the inner arc surface of the sector block corresponding to the bearing surface. A displacement sensor for measuring the displacement of the piston rod of the oil cylinder is respectively installed on each oil cylinder.
5. The large ring horizontal linkage diameter expanding machine according to claim 1, characterized in that: The structure of the rotation driving device is as follows: A reduction gearbox is fixedly arranged on the side wall of the base. The input end of the reduction gearbox is fixedly connected to the motor shaft of the motor fixed on the reduction gearbox. A driving gear is fixedly installed at the output end of the reduction gearbox, and a driven gear meshing with the driving gear is fixedly installed on the rotating table. A guiding device for guiding the rotating table to rotate along the rotation track is further arranged on the periphery of the rotating table.
6. The horizontal linkage expanding machine for large ring parts according to claim 5, characterized in that: The guiding device is composed of a number of guiding mechanisms evenly distributed on the periphery of the rotating table. The structure of each guiding mechanism is as follows: A mounting seat is fixedly arranged on the foundation, and two centering pressure wheels are installed in the mounting seat. The two centering pressure wheels are in rolling contact with the outer circumferential side wall of the rotating table.
7. The horizontal linkage type diameter-expanding machine for large ring parts according to claim 6, wherein: The number of the guiding mechanisms is set to six.
8. The horizontal linkage type ring expanding machine for large-sized ring parts according to claim 1, wherein: The foundation is located in a pit, and a guardrail is arranged around the top of the pit.
9. The horizontal linkage type ring expanding machine for large-sized ring parts according to claim 1, characterized in that: The structures of the first detachable connection structure and the (n + 1)-th detachable connection structure are the same, and both are composed of an engaging structure of a T-shaped block and a T-shaped groove and a fastening structure of a countersunk head hole and a countersunk head screw.