Steel supporting structure part, gear box supporting structure of steel supporting structure part and manufacturing method of steel supporting structure part

Abstract

The invention provides a steel supporting structure part and a gear box supporting structure and a manufacturing method thereof, the yield strength of the steel supporting structure part is larger than 360 Mpa, the thickness of the steel supporting structure part is larger than 150 mm, and the steel supporting structure part is a forge piece; the steel supporting structure part is used for installing a bearing seat for supporting a gear box. The high-yield-strength forge piece serves as a material, after the thickness of the forge piece is limited, the forge piece serves as a follow-up material to form the bearing seat, the mounting hole is machined, and the technical problem that in the prior art, a bearing based on a new supporting structure is lacked for machining the mounting hole is solved.

Description

Technical Field:

[0001] The present invention relates to the field of structural design, and particularly to a steel support structure part, a gearbox support structure thereof, and a manufacturing method. Background Art:

[0002] For conventional steel parts of hull structures, there are two manufacturing methods. One is to use steel plate cutting, and the other is casting. However, for the 1600-ton wind power installation platform project, the existing steel plate cutting or casting methods cannot meet the design requirements, which is related to its structural strength requirements.

[0003] There is an urgent need for a steel support structure part, a gearbox support structure thereof, and a manufacturing method, which helps to solve the technical problem in the prior art of lacking a technology for machining mounting holes based on a new support structure bearing. Summary of the Invention:

[0004] In one embodiment, the present invention provides a steel support structure part. Using a forging with high yield strength as the material, after defining its thickness, it is used as the subsequent material to form a bearing seat and machine mounting holes, which helps to solve the technical problem in the prior art of lacking a technology for machining mounting holes based on a new support structure bearing.

[0005] The yield strength of the steel support structure part is greater than 360 Mpa, and the thickness exceeds 150 mm. Among them, the steel support structure part is a forging;

[0006] The steel support structure part is used to install and support the bearing seat of the gearbox.

[0007] In one embodiment, the present invention also provides a gearbox support structure using the steel support structure part. The gearbox support structure using the steel support structure part includes a bearing box support frame and two rows of the steel support structure parts;

[0008] The steel support structure parts are arranged at intervals longitudinally and are symmetrically arranged along the center.

[0009] In one embodiment, longitudinal supports are provided on both sides of the steel support structure part at intervals and in parallel.

[0010] In one embodiment, a rib plate is provided between the longitudinal supports;

[0011] Three edges of the rib plate are respectively welded and fixed to the steel support structure part and the longitudinal supports on both sides.

[0012] In one embodiment, each steel support structure part is machined with a gearbox mounting hole, and a mounting shaft of the gearbox is installed in the gearbox mounting hole.

[0013] In one embodiment, the present invention further provides a manufacturing method for a gearbox support structure, and the manufacturing method includes:

[0014] Install the steel support structure part on the bearing housing support frame, wherein the steel support structure part is the described steel support structure part;

[0015] Bore holes on the steel support structure part according to the installation position of the gearbox.

[0016] In one embodiment, the thickness allowance of the steel support structure part is 15 millimeters, and the reserved allowance of the steel support structure part is 10 millimeters.

[0017] In one embodiment, the boring holes on the steel support structure part according to the installation position of the gearbox includes:

[0018] Mark the installation position lines of each gearbox and the center points of the bearings;

[0019] Bore each installation hole according to the bearing seat of the bearing.

[0020] In one embodiment, after the step of boring each installation hole according to the bearing seat of the bearing, the method further includes:

[0021] Unify and machine the front and rear end faces of all the steel support structure parts.

[0022] In one embodiment, after the step of unifying and machining the front and rear end faces of all the steel support structure parts, the manufacturing method further includes:

[0023] Install the gearbox on the steel support structure part. Description of the drawings:

[0024] Figure 1 It is a schematic structural diagram of a steel support structure part in an embodiment of the present invention;

[0025] Figure 2 It is a schematic diagram of the gearbox support structure of the steel support structure part in another embodiment of the present invention;

[0026] Figure 3 It is a schematic side view structure diagram of the gearbox support of the steel support structure part in another embodiment of the present invention;

[0027] Figure 4 It is a schematic connection structure diagram of the steel support structure part in another embodiment of the present invention;

[0028] Figure 5 It is a schematic top view diagram of the gearbox support structure of the steel support structure part in another embodiment of the present invention;

[0029] Figure 6 Schematic diagram of the gearbox support structure of the steel support structure part after installing the gearbox in another embodiment of the present invention;

[0030] Figure 7 Schematic diagram of the first cross-section of the gearbox support structure of the steel support structure part after installing the gearbox in another embodiment of the present invention;

[0031] Figure 8 Schematic diagram of the second cross-section of the gearbox support structure of the steel support structure part after installing the gearbox in another embodiment of the present invention.

[0032] Reference signs:

[0033] Steel support structure part 1

[0034] Gearbox 2

[0035] Mounting hole 21

[0036] Mounting shaft 22

[0037] Bearing housing support frame 3

[0038] Longitudinal support 4

[0039] Reinforcing plate 5 Specific embodiments:

[0040] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] Reference is made herein to the various aspects and features of the present application as depicted in the accompanying drawings.

[0042] These and other features of the present application will become apparent from the following description of the preferred forms of the embodiments given as non-limiting examples with reference to the accompanying drawings.

[0043] It should also be understood that although the present application has been described with reference to some specific examples, those skilled in the art can surely implement many other equivalent forms of the present application, which have the features as described in the claims and thus are all within the scope of protection defined thereby.

[0044] When combined with the accompanying drawings, the above and other aspects, features and advantages of the present application will become more apparent in view of the following detailed description.

[0045] Specific embodiments of the present application will be described hereinafter with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of the present application and can be implemented in various ways. Well-known and / or repetitive functions and structures are not described in detail to determine the true intent based on the user's historical operations and to avoid obscuring the present application with unnecessary or redundant details. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but are merely used as a basis and representative basis for the claims to teach those skilled in the art to use the present application in substantially any suitable detailed structure in a variety of ways.

[0046] This specification may use the phrases "in one embodiment", "in another embodiment", "in yet another embodiment", or "in other embodiments", each of which may refer to one or more of the same or different embodiments according to the present application.

[0047] Manufacturing parts with ultra-high yield strength and ultra-thick plate thickness in a forging form can effectively avoid problems of part accuracy and roughness caused by steel plate cutting. In areas prone to fatigue, the performance and lifespan are more reliable than those of castings.

[0048] Figure 1 It is a schematic structural diagram of a steel support structure part in an embodiment of the present invention; Figure 2 It is a schematic diagram of the gearbox support structure of the steel support structure part in another embodiment of the present invention; Figure 3 It is a schematic side view structure diagram of the gearbox support of the steel support structure part in another embodiment of the present invention; Figure 4 It is a schematic connection structure diagram of the steel support structure part in another embodiment of the present invention; Figure 5 It is a schematic top view diagram of the gearbox support structure of the steel support structure part in another embodiment of the present invention; Figure 6 It is a schematic diagram of the steel support structure part after installing the gearbox in another embodiment of the present invention; Figure 7 It is a schematic diagram of the first cross-section of the steel support structure part after installing the gearbox in another embodiment of the present invention;

[0049] Figure 8 It is a schematic diagram of the second cross-section of the steel support structure part after installing the gearbox in another embodiment of the present invention.

[0050] As Figures 1 to 8 shown, in one embodiment, the present invention provides a steel support structure part 1 with a yield strength greater than 360 Mpa and a thickness exceeding 150 mm. Among them, the steel support structure part 1 is a forging;

[0051] The steel support structure part 1 is used to install and support the bearing seat of the gearbox 2.

[0052] In this embodiment, a specific implementation manner of a steel support structure part is provided. For ultra-thick parts with a yield strength exceeding 360 Mpa and a thickness exceeding 150 mm, special equipment is required for preheating, cutting, and slow cooling, and special processes are needed to prevent deformation. Conventional shipyards do not have the corresponding hardware configuration or process reserves, and the part processing cost and precision control are difficult. If casting is used, the internal grains of the casting are not as uniform as those of the steel plate. In places where the yield strength requirement is high, the vibration is large, and the welding quality requirement is high, the material itself and the heat-affected zone have a relatively large impact on the service life, and extended cracks are likely to occur. Therefore, using high-strength forgings helps to solve the technical problem in the prior art of lacking a technology for machining and installing holes based on a new support structure bearing.

[0053] In addition, according to the structural strength calculation, the required yield strength, specifications, and dimensions of the part are determined. Making parts with ultra-high yield strength and ultra-thick plate thickness in a forging form can effectively avoid problems such as part precision and roughness caused by steel plate cutting, and in areas prone to fatigue, the performance and life are more reliable than those of castings.

[0054] In one embodiment, the present invention also provides a gearbox support structure using a steel support structure part. The gearbox support structure using a steel support structure part includes a bearing box support frame 3 and two rows of the steel support structure parts 1.

[0055] The fabricated support structure parts 1 are arranged at intervals longitudinally and are symmetrically arranged along the center.

[0056] In one embodiment, longitudinal supports 4 are provided on both sides of the steel support structure part 1 at intervals and in parallel.

[0057] In one embodiment, a rib plate 5 is provided between the longitudinal supports 4.

[0058] Three edges of the rib plate 5 are respectively welded and fixed to the steel support structure part 1 and the longitudinal supports 4 on both sides.

[0059] In one embodiment, each steel support structure part 1 is machined with an installation hole 21 for the gearbox 2, and an installation shaft 22 of the gearbox is installed in the installation hole of the gearbox 2.

[0060] Through this technical method, making parts with ultra-high yield strength and ultra-thick plate thickness in a forging manner solves the equipment and process constraints of steel plate cutting, solves the internal grain uniformity of the casting material and the welding quality stability, and ensures that the performance and life of the parts meet the use requirements.

[0061] In one embodiment, the present invention also provides a manufacturing method for a gearbox support structure. The manufacturing method includes:

[0062] Install the steel support structure part on the bearing housing support frame, where the steel support structure part is the described steel support structure part;

[0063] The function of the part is to install and support the bearing seat of the gearbox. The installation accuracy requirements of the gearbox are high. The bearing center positioning of the gearbox requires precision. The surface of the opening size requires smoothness, and the hole diameter size is not allowed to have deviations. In actual construction, considering the accuracy deviation, after the part is installed, it is not until the gearbox is installed that the opening center can be determined according to the actual installation position of the gearbox, and then the installation hole can be bored well.

[0064] Bore holes on the steel support structure part according to the installation position of the gearbox.

[0065] In one embodiment, the thickness allowance of the steel support structure part is 15 mm, and the reserved allowance of the steel support structure part is 10 mm.

[0066] For the thickness direction of the bearing seat opening to cooperate with the installation of the equipment, a certain reserve also needs to be reserved to facilitate the front and back adjustment of the installation position of the equipment. To meet the above requirements, when actually manufacturing the part, the length and width dimensions of the outer contour of the part are made according to the theoretical dimensions, the thickness direction is increased by 15 mm of allowance, and the inner hole is reserved with 10 mm of allowance, so as to perform opening center positioning, opening correction and front and back end face correction according to the actual installation position of the equipment later.

[0067] After the theoretical dimensions and production design dimensions of the part are determined, clarify that the manufacturing method of the part is forging, compile the forging technical requirements, and put forward requirements for the forging quality, material performance, dimensions, and the performance of the welding heat affected zone to be consistent with the base material in particular, and formulate the corresponding material performance inspection and forging quality inspection requirements, as well as other quality control procedures to be followed, including identification, certification, etc. Forged parts can ensure uniform grains inside the material and stable overall performance. Through material performance tests, confirm that the yield and tensile strength of the material performance meet the design requirements. Through welding process qualification, ensure that the performance of the welding area does not change during part installation. Through corresponding non-destructive inspections, eliminate the defects affecting performance inside the material, and summarize the corresponding process data.

[0068] After the corresponding part material performance technical indicators, specifications, and dimensions are confirmed, the manufacturer provides qualified products according to technical and quality requirements. After the product is manufactured and inspected qualified, it can be welded and installed at the designated position according to the production drawing design and process guidance. Moreover, the welding between the forged material and the steel plate part meets the technical requirements. After experimental evaluation, the heat affected zone also meets the material performance requirements and has no defects.

[0069] In one embodiment, the boring holes on the steel support structure part according to the installation position of the gearbox includes:

[0070] Mark out the installation position lines of each gearbox and the center points of the bearings;

[0071] Bore each installation hole according to the bearing housing of the bearing.

[0072] On the entire complete pile fixing frame unit, after all the forged parts are installed, according to the overall installation accuracy, accurately measure and mark out the installation position lines of each gearbox equipment, and the center points of the bearings of each gearbox can be marked out. Thus, taking these center points as the reference, according to the dimensional requirements of the bearing housing, bore each installation hole. At the same time, according to the front and rear positions of the gearbox installation, uniformly plane the front and rear end faces of the forged parts to the installation required plane. So far, all the forged parts are manufactured and ready to be installed into the gearbox. Among them, the pile fixing frame is a bearing housing support frame.

[0073] In one embodiment, after the step of boring each installation hole according to the bearing housing of the bearing, the method further includes:

[0074] Uniformly machine the front and rear end faces of all the steel support structure parts.

[0075] In one embodiment, after the step of uniformly machining the front and rear end faces of all the steel support structure parts, the manufacturing method further includes:

[0076] Install the gearbox on the steel support structure parts.

[0077] At a proper stage in the later period, install the gearbox into the pile fixing frame, where the forged parts support the outer bearing housing of the gearbox. Gears are installed on the bearings of the gearbox. The gearbox is driven, the bearings rotate, driving the gears to rotate, and meshing with the gears on the pile legs used to support the whole ship. Multiple gearboxes on the entire pile fixing frame are driven together, driving multiple gears to rotate together, applying force to the racks of the pile legs, and the pile legs can be inserted into the seabed or the whole ship can climb upward along the pile legs through rack meshing. The forces in the whole process are borne by the bearing housings at both ends of each gearbox, and the forces on the outer bearing housings at the outer ends are borne by these forged parts.

[0078] Beneficial effects:

[0079] 1. The parts are manufactured by forging. The parts produced by the production design are initially formed by forging the steel billet and then machined. The process is mature and the process control is simple. Among them, the bearing housing holes are completed by forging, avoiding the defects of ignition and extinguishing during the thermal cutting of the steel plate.

[0080] 2. The external dimensions of the forged parts, including length, width, and height, especially the bearing seat holes, are controlled for accuracy and roughness through machining. This results in high precision, a smooth surface, and avoids problems such as precision loss at the cutting edges during hot cutting of steel plates, deformation, and shrinkage during preheating and slow cooling. The parts after rough machining are convenient for rapid installation during the construction stage and subsequent finishing, improving construction efficiency and quality.

[0081] 3. There is a wide range of choices for forged part manufacturers. The process is mature, with relatively low costs and a short production cycle.

[0082] 4. The internal grains of forged products are uniform, avoiding the risk of internal defects due to a large shrinkage ratio during the casting process of cast products.

[0083] 5. The technical requirements for forged parts stipulate non-destructive testing of the interior. Compared with cast parts that only undergo surface flaw detection, it provides better quality assurance.

[0084] 6. For the bearing connection positions, due to vibration, the vibration resistance, anti-fatigue performance, and safety of forged parts are superior to those of cast parts.

[0085] The above embodiments are only exemplary embodiments of the present invention and are not used to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements within the essence and protection scope of the present invention, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present invention.

Claims

1. A steel support structure part, characterized in that, The yield strength of the steel support structure part is greater than 360 Mpa and the thickness exceeds 150 mm. Among them, the steel support structure part is a forging; The steel support structure part is used to install and support the bearing seat of the gearbox.

2. A gearbox support structure using steel support structure parts, characterized in that, The gearbox support structure using the steel support structure part includes: A bearing box support frame; Two rows of steel support structure parts as described in claim 1, which are arranged at intervals longitudinally and symmetrically arranged along the center.

3. The gearbox support structure adopting the steel support structure part according to claim 2, characterized in that, Longitudinal supports are arranged in parallel at intervals on both sides of the steel support structure part.

4. The gearbox support structure using steel support structure parts according to claim 3, characterized in that, A rib plate is arranged between the longitudinal supports; Three edges of the rib plate are respectively welded and fixed to the steel support structure part and the longitudinal supports on both sides.

5. The gearbox support structure using steel support structure parts according to claim 4, characterized in that, Each steel support structure part is machined with a gearbox mounting hole, and the mounting shaft of the gearbox is installed in the gearbox mounting hole.

6. A manufacturing method of a gearbox support structure, characterized in that, The manufacturing method includes: Install the steel support structure part on the bearing box support frame, where the steel support structure part is the steel support structure part as described in claim 1; Bore holes on the steel support structure part according to the installation position of the gearbox.

7. The manufacturing method of the gearbox support structure according to claim 6, characterized in that, The thickness allowance of the steel support structure part is 15 mm, and the reserved allowance of the steel support structure part is 10 mm.

8. The manufacturing method of the gearbox support structure according to claim 7, characterized in that, The boring holes on the steel support structure part according to the installation position of the gearbox includes: Mark out the installation position line of each gearbox and the center point of the bearing; Bore each installation hole according to the bearing seat of the bearing.

9. The manufacturing method of the gearbox support structure according to claim 8, characterized in that, After the step of boring each installation hole according to the bearing seat of the bearing, the method further includes: Unify the cutting of the front and rear end faces of all the steel support structure parts.

10. The manufacturing method of the gearbox support structure according to claim 9, characterized in that, After the step of unifying the cutting of the front and rear end faces of all the steel support structure parts, the manufacturing method further includes: Install the gearbox on the steel support structure part.

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