Special-shaped ring and processing equipment and method thereof

Abstract

The present invention provides a special-shaped ring and a processing device and method thereof, which belong to the field of profile processing, and include a plurality of arc segments spliced ​​into a ring, the arc segments are hollow tube structures, the cross-section of the arc segments is a vertically symmetrical structure, the upper end of the arc segments includes a first vertical surface, a second vertical surface and a horizontal fixed surface, a first fixed inclined surface is provided between the first vertical surface and the horizontal fixed surface, a second fixed inclined surface is provided between the second vertical surface and the horizontal fixed surface, and according to the cross-sectional figure of the arc segment, a plurality of cross-sectional outer R angles for transition are provided at the outer circle bending part, and a plurality of cross-sectional inner R angles for transition are provided at the inner circle bending part, and the special-shaped ring is welded from a plate into a hollow tube structure and the weld is provided on the horizontal center straight line of the first vertical surface. The contact area of ​​the present invention with other parts is a plane, which is convenient for welding and fixing, simplifies the assembly process, and improves the connection strength. The corresponding processing equipment is adopted to simplify the processing process of the special-shaped ring and reduce the processing cost of the special-shaped ring.

Description

Technical Field

[0001] The invention belongs to the field of profile processing, relates to a Ferris wheel or a large fixed ring structure, in particular to a main body of a circular fixed ring, a special-shaped ring structure and equipment for processing the special-shaped ring structure. Background Art

[0002] A Ferris wheel is a large, revolving mechanical structure with gondolas hanging on the edge of the wheel. Passengers sit in the wheel and it slowly rotates upward, allowing them to overlook the surrounding scenery from a high altitude. The most common Ferris wheels are found in amusement parks (or theme parks) and garden parties. As an amusement park motorized game, it is known as the "three treasures of the park" together with roller coasters and carousels, but Ferris wheels often exist alone in other occasions, usually as an observation deck for activities.

[0003] The steel structure of the Ferris wheel rim is processed and assembled in sections in the factory, and then the rim is assembled into a whole after being transported to the site. Then the internal rigid truss support or flexible steel cable system is connected, and finally the whole is hoisted into place. The steel tube truss of the rim is processed in sections in the factory, transported to the site and assembled into a whole. Then the steel cables inside the rim are installed and tensioned, prestressed, and finally the wheel disc structure and the supporting tower structure are formed into an integral structure and then hoisted.

[0004] The rim steel structure of the Ferris wheel is connected and fixed with other parts at multiple positions, and as the carrier of the outer ring, high strength is crucial. Because the Ferris wheel is round, considering the problems of manufacturing and assembly, a hollow circular tube structure is often used. However, during the welding process of the hollow circular tube structure and other parts, because many of the base surfaces are curved surfaces, the contact area is limited, or special shapes of parts need to be made to match them, resulting in high costs or increased welding process costs. In addition, due to the limited contact area, ensuring strength requires very high technology, and strength is the guarantee of safety. As a manned equipment, safety is of vital importance, so there are strict requirements and restrictions on strength and technology. Summary of the invention

[0005] The problem to be solved by the present invention is to provide a special-shaped ring and its processing equipment and method, wherein the contact area with other parts is a plane, which is convenient for welding and fixing, simplifies the assembly process, and improves the connection strength. The corresponding processing equipment is used to simplify the processing process of the special-shaped ring and reduce the processing cost of the special-shaped ring.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a special-shaped ring and its processing equipment and processing method, including a plurality of arc segments spliced ​​into a ring, the arc segment is a hollow tube structure, the cross section of the arc segment is a vertically symmetrical structure, the upper end of the arc segment includes a first vertical surface, a second vertical surface and a horizontal fixed surface, a first fixed inclined surface is provided between the first vertical surface and the horizontal fixed surface, and a second fixed inclined surface is provided between the second vertical surface and the horizontal fixed surface;

[0007] With respect to the cross-sectional figure of the arc segment, a plurality of cross-sectional outer R angles for transition are provided at the outer circle bending part, and a plurality of cross-sectional inner R angles for transition are provided at the inner circle bending part;

[0008] The special-shaped ring is welded from plates into a hollow tube structure, and the weld is arranged on a horizontal center straight line of the first vertical surface, and the weld adopts a cutaway weld structure.

[0009] Furthermore, the slope of the first fixed inclined surface relative to the horizontal plane is smaller than the slope of the second fixed inclined surface relative to the horizontal plane, the first vertical surface is the outer side, the second vertical surface is the inner side, the first fixed inclined surface is connected to the side reinforcement, and the second fixed inclined surface is connected to the surface reinforcement.

[0010] Furthermore, the cross-sectional length tolerance of the arc segment does not exceed 1% of the cross-sectional length, the outer R angle radius of the cross-sectional area does not exceed ±2mm, and the inner R angle radius does not exceed ±2mm. The cross-sectional area of ​​the arc segment is formed by multiple presses, and the radius of the special-shaped ring is formed by medium-frequency hot bending.

[0011] Furthermore, the end face bending tolerance does not exceed 0.2% of the tube length, the radial radius tolerance does not exceed ±10mm, the torsion value tolerance does not exceed 2 / 1000 of the tube length, the edge convexity does not exceed 0.6 / 1000 of the cross-sectional edge length, and the plate thickness tolerance for special-shaped rings does not exceed ±0.3mm.

[0012] The equipment for processing special-shaped rings includes a feeding component, a pushing component, a section forming component, an arc forming component and a blanking component arranged in an assembly line. The section forming component includes four forming rollers, which are arranged at four corners and form a forming cavity consistent with the shape of the special-shaped ring. The forming rollers rotate along their own axes.

[0013] Furthermore, the forming roller is fixed on a horizontal axis, and the two ends of the horizontal axis located at the axis of the forming roller are rotatably connected to the bearing seat through four rows of cylindrical roller bearings respectively, the bearing seat is fixed to a fixing device, and a fixed seat is provided at the end of the bearing seat away from the forming roller, and a reducer is fixed at the end of the fixed seat away from the forming roller, the output end of the reducer is fixedly connected to the horizontal axis, and the input end of the planetary reducer is fixedly connected to the hydraulic motor.

[0014] Furthermore, a lifting ring is provided at one end of the horizontal shaft away from the hydraulic motor, the forming roller is fixedly connected to the horizontal shaft via a key structure, and the reducer is a planetary reducer.

[0015] Furthermore, the overall hardness of the forming roller is between HRC58 and HRC62, the surface roughness of the forming cavity formed by the forming roller is 1.6, and the diameter tolerance of the forming roller is ±0.05.

[0016] The method for processing a special-shaped ring comprises the following steps: S1, feeding, steadily conveying from slow to fast, and stopping feeding when the tail of the steel pipe enters the hydraulic pusher;

[0017] S2, alignment, use the clamping device to align the front and rear pipe ends and clamp them. After clamping, confirm that the front and rear pipe ends are completely aligned, start the pushing device, and before the steel pipe enters the unit, the shape adjuster uses the alignment vertical roller to adjust the steel pipe to the symmetrical position of the forming roller;

[0018] S3, push, drive the push unit to the starting section, open the push door, wait until the tail of the steel pipe completely enters the front end of the push machine, close the push door, start the push unit, push the steel pipe forward at a uniform speed, and extrude the steel pipe into the size required by the production plan under the extrusion of the forming extrusion roller;

[0019] S4, forming, adjust the forming roller to the specified size, start the pushing equipment, extrude the square tube into a special-shaped ring that meets the requirements, and check the parameters in time;

[0020] S5, arc forming, using bending equipment to bend the special-shaped ring to a preset arc;

[0021] S6. Cut the material into preset lengths using a saw and transport it to the designated area using a crane.

[0022] Furthermore, before S1, the raw material inspection and loading are completed, qualified products are loaded, and unqualified products are classified and processed. The loading is carried out by overhead crane, and the material is fed through V-shaped rollers. In S4, the outer dimensions, R angle size, surface convexity and concaveness, and straightness of the special-shaped ring are measured in time. After S6, the operator lifts the semi-finished steel pipe to the roller of the whole-mouth unit, sends one end of the steel pipe to the front of the whole-mouth machine, clamps it, adjusts the shaping mold according to the inner diameter of the steel pipe, and starts the hydraulic system facing the edge of the pipe mouth. System, adjust the flatness of the pipe mouth until it meets the requirements, turn the steel pipe over, adjust the other edges in turn, after one end is adjusted, use a crane to lift the steel pipe, and repeat the above steps for the other end of the pipe mouth. When the pipe mouth meets the requirements, lift the whole mouth of the special-shaped ring to the finished product area, and finally set the code according to the regulations, add ink to the inkjet printer, and the operator will use the inkjet printer to spray the code in the middle of the steel pipe. Pay attention to the clarity of the handwriting. After the coding is completed, seal the remaining ink and save it for the next use.

[0023] Compared with the prior art, the present invention has the following advantages and positive effects.

[0024] 1. The special-shaped ring of the present invention adopts a symmetrical structure, and the force is balanced and stable. A plurality of cross-section outer R angles and cross-section inner R angles are set at each connection of the special-shaped ring to avoid stress concentration and extend the service life of the parts. The butt joints forming the annular structure adopt a cutaway welding structure to increase the welding area and improve the welding strength. The special-shaped ring structure and other parts are in surface contact, which is convenient for connection and fixation, and the connection is more firm and stable, and is more suitable for large-scale annular equipment, Ferris wheels and other large equipment;

[0025] 2. During the production process, multiple parameters are set to ensure the accuracy and strength of the arc segment processing and the safety after actual installation. The cross-section of the arc segment is formed by multiple pressing steps, and the radius of the special-shaped ring is formed by medium-frequency hot bending. No cracks, parent material damage or obvious indentations should appear in any part of the pipe to ensure strength and accuracy and improve quality;

[0026] 3. The assembly line of the special-shaped ring forming equipment adopts the production line for processing round tubes into square tubes that our company has been using and patented. The difference is that the shape composed of multiple forming rollers is different from before. Before, it was formed into a square tube, and this is a multilateral special-shaped ring structure, which is achieved by setting the relative positions of the forming rollers, and then the formed special-shaped ring is bent to a certain arc. Except for the different forming, the rest are well-known technologies, which greatly reduces the cost of research and development and production, and improves the commonality of the settings. Moreover, the forming rollers are arranged in components, which can be directly replaced with the conventional square tube forming part in actual use, further reducing the investment cost of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 is a top view of the special-shaped ring of the present invention;

[0029] Figure 2 The present invention Figure 1 AA section view;

[0030] Figure 3 This is a diagram showing the actual use state of the special-shaped ring of the present invention;

[0031] Figure 4 This is a flow chart of the equipment for processing special-shaped rings of the present invention;

[0032] Figure 5 It is a cross-sectional view of the cooperation between the forming roller and the special-shaped ring of the present invention;

[0033] Figure 6 It is an assembly diagram of the forming roller and related parts of the present invention after matching;

[0034] Figure 7 It is a process flow chart of the forming process of the special-shaped ring of the present invention.

[0035] Reference numerals:

[0036] 10. Special-shaped ring; 1. First vertical surface; 2. Second vertical surface; 3. Horizontal fixed surface; 4. First fixed inclined surface; 5. Second fixed inclined surface; 6. External R angle of cross section; 7. Internal R angle of cross section; 81. Forming roller; 82. Horizontal axis; 821. Lifting ring; 83. Cylindrical roller bearing; 84. Bearing seat; 85. Reducer; 86. Hydraulic motor; 87. Fixed seat; 20. Surface tensioning; 30. Oblique tensioning. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0040] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0041] like Figure 1 to Figure 6As shown, the present invention is a special-shaped ring, including a plurality of arc segments spliced ​​into a ring, the arc segment is a hollow tube structure, the cross section of the arc segment is a vertically symmetrical structure, the upper end of the arc segment includes a first vertical surface 1, a second vertical surface 2 and a horizontal fixed surface 3, a first fixed inclined surface 4 is provided between the first vertical surface 1 and the horizontal fixed surface 3, and a second fixed inclined surface 5 is provided between the second vertical surface 2 and the horizontal fixed surface 3. Firstly, a symmetrical structure is adopted, and the force is balanced and stable;

[0042] According to the cross-sectional figure of the arc segment, multiple cross-sectional outer R angles 6 for transition are provided at the outer circle bending part, and multiple cross-sectional inner R angles 7 for transition are provided at the inner circle bending part, so as to avoid stress concentration and extend the service life of the parts;

[0043] The special-shaped ring 10 is welded from a plate into a hollow tube structure and the weld is arranged on the horizontal center straight line of the first vertical plane 1. The weld adopts a notch weld structure. The angle of the notch weld adopts a 60-degree structure. The depth of the notch weld is more than 3 / 5 of the plate thickness, preferably 4 / 5, to ensure the welding area and improve the strength after welding.

[0044] Preferably, the slope of the first fixed bevel 4 relative to the horizontal plane is smaller than the slope of the second fixed bevel 5 relative to the horizontal plane, the first vertical plane 1 is the outer side, and the second vertical plane 2 is the inner side, the first fixed bevel 4 is connected to the side reinforcement, and the second fixed bevel 5 is connected to the surface reinforcement 20, and a planar structure is used for welding and fixing to expand the contact area, increase the firmness of the welding, and improve the strength and stability of the entire structure. More preferably, the corresponding arc angle of each arc segment is between 11.5 degrees and 13.5 degrees. If the corresponding angle is too large, it is not easy to make an arc bend and the forming accuracy will be reduced. If the corresponding angle is too small, the assembly process and difficulty will be increased in the actual welding machine assembly structure, and too many segments will be connected, affecting the overall strength. Under the premise of ensuring accuracy and strength, the segmented intervals are reasonably set. This structure is suitable for arc welding structures with a radius of more than 50,000 mm and has high strength.

[0045] Preferably, the cross-sectional side length tolerance of the arc segment does not exceed 1% of the cross-sectional side length, the radius of the outer R angle 6 of the cross-sectional area does not exceed ±2mm, and the radius of the inner R angle does not exceed ±2mm. The cross-sectional area of ​​the arc segment is formed by multiple presses, and the special-shaped ring is formed by medium-frequency hot bending with a radius of 10. No cracks, damage to the base material, or obvious indentations shall appear on any part of the pipe to ensure strength and precision and improve quality.

[0046] Preferably, the end face bending tolerance does not exceed 0.2% of the tube length, the radial radius tolerance does not exceed ±10mm, the torsion value tolerance does not exceed 2 / 1000 of the tube length, the edge convexity is not greater than 0.6 / 1000 of the cross-sectional side length, and the plate thickness tolerance used for the special-shaped ring 10 does not exceed ±0.3mm. Setting these parameters can ensure the strength and precision of the special-shaped ring 10. Therefore, the special-shaped ring 10 is composed of multiple arc segments and is used for super-large equipment. Precision and strength are crucial and directly affect safety. The difference in any parameter must be within the tolerance range, otherwise it will affect the forming of the part.

[0047] The equipment for processing the special-shaped ring 10 includes a feeding component, a pushing component, a section forming component, an arc forming component and a blanking component arranged in an assembly line. The section forming component includes four forming rollers 81. The four forming rollers 81 are arranged at four corners and form a forming cavity consistent with the shape of the special-shaped ring. The forming rollers 81 rotate along their own axes. The feeding component, the pushing component, the arc forming component and the blanking component are all equipped with the company's existing equipment. Relevant patents have been applied for before. The feeding component can refer to the following two patents, "CN201720313774.9 A conveying device for a rectangular tube production line" and "CN201720312779.X A plate buffer conveying device for a rectangular tube production line"; the pushing component can refer to the following patents, "CN201720351945.7 A rectangular steel tube clamping device", and the cooling device involved in the pushing process can refer to the following patent, "CN201720316264.7 A welding cooling water circulation supply device for a rectangular tube production line". In the process of pushing, the section forming After the forming assembly, the cross-sectional shape of the special-shaped ring 10 is formed. The formed special-shaped ring 10 is formed into a certain curvature through the curvature forming assembly. You can refer to the patents "CN201310148530.6 A heat pipe bending method and heat pipe bending manufacturing device" and "CN201210436582.9 A plate and tube bending machine". After forming, the blanking assembly can refer to the company's patents, "CN201720313684.X Automatic conveying device for rectangular steel pipes after forming" and "CN2017203530 33.3 A device for conveying and collecting rectangular tubes after forming", which can be cut and packaged after conveying, referring to the following patents, "CN201720351504.7 A formed steel tube cutting platform device for a steel tube extrusion forming production line", "CN201720312658.5 A device for cutting rectangular tubes after forming", and "CN201720312664.0 Automatic packaging device for rectangular steel tubes", realizes the automatic production line setting of the special-shaped ring 10 production equipment, and improves the production efficiency and accuracy.

[0048] Preferably, the forming roller 81 is fixed on a horizontal shaft 82, and the two ends of the horizontal shaft 82 located at the axis of the forming roller are rotatably connected to the bearing seat 84 through four rows of cylindrical roller bearings 83 respectively. The bearing seat 84 is fixed to a fixing device, and a fixed seat 87 is provided at the end of the bearing seat 84 away from the forming roller 81. A reducer 85 is fixed at the end of the fixed seat 87 away from the forming roller 81. The output end of the reducer 85 is fixedly connected to the horizontal shaft 82, and the input end of the planetary reducer 85 is fixedly connected to the hydraulic motor 86.

[0049] Preferably, a lifting ring 821 is provided at one end of the horizontal shaft 82 away from the hydraulic motor 86. The forming roller 81, the horizontal shaft 82 and related parts are arranged in a group and then connected to the fixing device. Because the length of the forming roller 81 is about 1 meter and the diameter is also relatively large, it is necessary to ensure the specifications and hardness of the forming. In addition, due to the related parts, the weight of the entire horizontal shaft 82 and related parts is relatively large. After the lifting ring 821 is provided, it is convenient for the lifting and transportation of the entire structure. The forming roller 81 and the horizontal shaft 82 are fixedly connected by a key structure. The length of the key is set close to the length of the forming roller 81. The reducer 85 is a planetary reducer 85. The planetary reducer 85 is a direct transmission structure. The planetary reducer 85 can increase the torque and increase the stability of this structure.

[0050] Preferably, the overall hardness of the forming roller 81 is between HRC58 and 62. A nitriding layer can be provided on the outer surface of the forming roller 81 to improve the outer surface hardness of the forming roller 81. Only after the hardness is ensured can the square steel be guided and pressed, thereby realizing extrusion deformation according to a preset shape. If the hardness of the forming roller 81 is too low, the service life of the forming roller 81 is too short, and the forming accuracy of the special-shaped ring 10 cannot be guaranteed. The surface roughness of the forming cavity formed by the forming roller 81 is 1.6, and the diameter tolerance of the forming roller 81 is ±0.05. The dimensional accuracy and surface roughness of the forming roller 81 are set to ensure the accuracy of the forming roller 81, further ensure the accuracy of the special-shaped ring 10, and improve the qualified rate of the product.

[0051] Specific implementation example: the corresponding arc angle of each arc segment is 12.86 degrees, the thickness of the plate is 75 mm, the diameter of the arc segment is 54900 mm, the length of the first vertical surface 1 is 212 mm, the length of the second vertical surface 2 is 350 mm, the horizontal distance between the first vertical surface 1 and the second vertical surface 2 is 980 mm, the distance between the upper and lower horizontal fixed surfaces 3 is 640 mm, the length of the horizontal fixed surface 3 is 350 mm, the distance between the end of the horizontal fixed surface 3 close to the first vertical surface 1 and the first vertical surface 1 is 237 mm, the transition radius between the first vertical surface 1 and the first fixed inclined surface 4 is R70, the transition radius between the first fixed inclined surface 4 and the horizontal fixed surface 3 is R150, the transition radius between the horizontal fixed surface 3 and the second fixed inclined surface 5 is R100, and the transition radius between the second fixed inclined surface 5 and the second vertical surface 2 is R70.

[0052] The method for processing a special-shaped ring comprises the following steps: S1, feeding, steadily conveying from slow to fast, and stopping feeding when the tail of the steel pipe enters the hydraulic pusher;

[0053] S2, alignment, use the clamping device to align the front and rear pipe ends and clamp them. After clamping, confirm that the front and rear pipe ends are completely aligned, start the pushing device, and before the steel pipe enters the unit, the shape adjuster uses the alignment vertical roller to adjust the steel pipe to the symmetrical position of the forming roller;

[0054] S3, push, drive the push unit to the starting section, open the push door, wait until the tail of the steel pipe completely enters the front end of the push machine, close the push door, start the push unit, push the steel pipe forward at a uniform speed, and extrude the steel pipe into the size required by the production plan under the extrusion of the forming extrusion roller;

[0055] S4, forming, adjust the forming roller to the specified size, start the pushing equipment, extrude the square tube into a special-shaped ring that meets the requirements, and check the parameters in time;

[0056] S5, arc forming, using bending equipment to bend the special-shaped ring to a preset arc;

[0057] S6. Cut the material into preset lengths using a sawing machine and transport it to the designated area using a crane. The operator moves the formed tube to the sawing machine and determines the size of the tube at both ends according to the length requirements of the production plan. The tube is measured and locked. The sawing machine is started. When one end is sawed, it is moved to the other end using a crane. The tube is also adjusted to the size of the tube and started to saw. The steel tube is transported to the processing area using a crane.

[0058] Furthermore, before S1, the raw material inspection and loading are completed, qualified products are loaded, and unqualified products are classified and processed. The loading is carried out by overhead crane, and the material is fed through V-shaped rollers. In S4, the outer dimensions, R angle size, surface convexity and concaveness, and straightness of the special-shaped ring are measured in time. After S6, the operator lifts the semi-finished steel pipe to the roller of the whole-mouth unit, sends one end of the steel pipe to the front of the whole-mouth machine, clamps it, adjusts the shaping mold according to the inner diameter of the steel pipe, and starts the hydraulic system facing the edge of the pipe mouth. System, adjust the flatness of the pipe mouth until it meets the requirements, turn the steel pipe over, adjust the other edges in turn, after one end is adjusted, use a crane to lift the steel pipe, and repeat the above steps for the other end of the pipe mouth. When the pipe mouth meets the requirements, lift the whole mouth of the special-shaped ring to the finished product area, and finally set the code according to the regulations, add ink to the inkjet printer, and the operator will use the inkjet printer to spray the code in the middle of the steel pipe. Pay attention to the clarity of the handwriting. After the coding is completed, seal the remaining ink and save it for the next use.

[0059] In the actual working process, the special-shaped ring 10 is first processed from a round tube into a square tube structure before processing, see the patent "CN201720312599.1 Rectangular tube extrusion molding device from a round tube", and then the square tube is extruded into the special-shaped ring 10 structure. The square tube passes through the feeding component, the pushing component, the section molding component, the arc molding component and the blanking group in sequence. When passing through the section molding component, the molding of the special-shaped ring 10 is realized under the limitation of the molding cavity. Under the pressure of strength and the size limitation of space, the square tube Only after the structure is deformed into a special-shaped ring 10 can it be further pushed forward, and the arc shape after forming is formed and packaged. In the actual practical process, multiple arc segments are butt-welded on site to form an arc, and are welded and fixed with multiple side tie bars and surface tie bars 20 to form the outer hub of a Ferris wheel or a large circular equipment. In one structure, there can be multiple special-shaped rings 10 to form a complete skeleton structure. This special-shaped ring 10 structure has high strength, stable welding, and can be produced in segments in a modular manner, which reduces processing costs and improves on-site welding efficiency.

[0060] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. Special-shaped ring, characterized in that: The special-shaped ring is a hollow tube structure, the cross section of the special-shaped ring is a vertically symmetrical structure, and the upper end of the special-shaped ring includes a first vertical surface, a second vertical surface and a horizontal fixing surface, a first fixing inclined surface is provided between the first vertical surface and the horizontal fixing surface, and a second fixing inclined surface is provided between the second vertical surface and the horizontal fixing surface; with respect to the cross-sectional figure of the special-shaped ring, a plurality of cross-sectional outer R angles for transition are provided at the bending of the outer circle, and a plurality of cross-sectional inner R angles for transition are provided at the bending of the inner circle; the special-shaped ring is formed by a hollow steel pipe welded from a plate, and the weld is provided on the horizontal center straight line of the first vertical surface, and the weld adopts a cutaway welding structure; The slope of the first fixed inclined surface relative to the horizontal fixed surface is smaller than the slope of the second fixed inclined surface relative to the horizontal fixed surface, the first vertical surface is the outer side, the second vertical surface is the inner side, the first fixed inclined surface is connected to the side reinforcement, and the second fixed inclined surface is connected to the surface reinforcement; The cross-sectional length tolerance of the special-shaped ring does not exceed 1% of the cross-sectional length, the outer R angle radius of the cross-sectional area does not exceed ±2mm, and the inner R angle radius does not exceed ±2mm. The cross-sectional area of ​​the special-shaped ring is formed by multiple pressing steps, and the arc of the special-shaped ring is formed by medium-frequency hot bending; The processing method of the special-shaped ring includes the following steps: S1, feeding, conveying steadily from slow to fast, and stopping feeding when the tail of the steel pipe enters the hydraulic pusher; S2, alignment, use the clamping device to align the front and rear pipe ends and clamp them. After clamping, confirm that the front and rear pipe ends are completely aligned, start the pusher unit, and before the steel pipe enters the pusher unit, the shaper uses the alignment roller to adjust the steel pipe to the symmetrical position of the forming roller; S3, push, drive the push unit to the starting section, open the push door, wait until the tail of the steel pipe completely enters the front end of the push unit, close the push door, start the push unit, push the steel pipe forward at a uniform speed, and extrude the steel pipe into the square pipe size required by the production plan under the extrusion of the forming extrusion roller; S4, forming, adjust the forming roller to the specified size, start the pushing unit, extrude the square tube into a special-shaped ring that meets the requirements, and check the parameters in time; S5, arc forming, using bending equipment to bend the special-shaped ring to a preset arc; S6. Cut the material into preset lengths using a saw and transport it to the designated area using a crane.

2. The special-shaped ring according to claim 1, characterized in that: The end face bending tolerance shall not exceed 0.2% of the tube length, the radial radius tolerance shall not exceed ±10mm, the edge convexity shall not exceed 0.06% of the cross-sectional side length, and the plate thickness tolerance for special-shaped rings shall not exceed ±0.3mm.

3. The special-shaped ring according to claim 1, characterized in that: Before S1, the raw material inspection and loading are completed. Qualified products are loaded and unqualified products are sorted and processed. The loading is carried out by overhead crane and fed through V-shaped roller. In S4, the outer dimensions, R angle size and surface convexity of the special-shaped ring are measured in time. After S6, the operator lifts the semi-finished special-shaped ring to the roller of the whole-mouth unit, sends one end of the special-shaped ring to the front of the whole-mouth machine, clamps it, adjusts the shaping mold according to the inner diameter of the special-shaped ring, and starts the hydraulic system facing the edge of the pipe mouth of the special-shaped ring. , adjust the flatness of the pipe mouth until it meets the requirements, turn over the special-shaped ring, adjust the other edges in turn, after one end is adjusted, use a crane to lift the special-shaped ring, and perform the same shaping steps on the other end of the pipe mouth. When the pipe mouth meets the requirements, lift the whole special-shaped ring to the finished product area, and finally set the code according to the regulations, add ink to the printer, and the operator will use the printer to print in the middle of the special-shaped ring, paying attention to the clarity of the handwriting. After the coding is completed, seal the remaining ink and save it for the next use.

4. Equipment for processing the special-shaped ring according to claim 1 or 2, characterized in that: A feeding assembly, a pushing assembly, a section forming assembly, an arc forming assembly and a blanking assembly are arranged in an assembly line. The section forming assembly includes four forming rollers, which are arranged at four corners and form a forming cavity consistent with the shape of the special-shaped ring. The forming rollers rotate along their own axes.

5. The device according to claim 4, characterized in that: The forming roller is fixed on a horizontal axis. The two ends of the horizontal axis located at the axis of the forming roller are rotatably connected to the bearing seat through four rows of cylindrical roller bearings respectively. The bearing seat is fixed to a fixing device. A fixed seat is provided at the end of the bearing seat away from the forming roller. A reducer is fixed at the end of the fixed seat away from the forming roller. The output end of the reducer is fixedly connected to the horizontal axis, and the input end of the reducer is fixedly connected to the hydraulic motor.

6. The device according to claim 5, characterized in that: A lifting ring is provided at one end of the horizontal shaft away from the hydraulic motor, the forming roller is fixedly connected to the horizontal shaft via a key structure, and the reducer is a planetary reducer.

7. The device according to claim 5, characterized in that: The overall hardness of the forming roller is between HRC58 and HRC62, the surface roughness of the forming cavity formed by the forming roller is 1.6, and the diameter tolerance of the forming roller is ±0.05.

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