Anti-deformation support of slewing bearing connecting assembly of super-large tower crane rotary table

Abstract

The utility model discloses an anti-deformation support for a slewing bearing connecting assembly of a super-large tower crane turntable, which is used for supporting the slewing bearing connecting assembly and comprises two groups of inner support assemblies and a plurality of vertical support assemblies, and each inner support assembly comprises a transverse anti-deformation support rod and a longitudinal anti-deformation support rod. One end of the longitudinal anti-deformation supporting rod is fixed to the transverse anti-deformation supporting rod, the other end of the longitudinal anti-deformation supporting rod abuts against the inner wall of the mounting plate half ring, the two ends of the transverse anti-deformation supporting rod abut against the inner wall of the mounting plate half ring, and three-point supporting is formed; the vertical supporting assemblies can support the inner circular web and the outer circular web which are attached to each other, and the bottom faces of the vertical supporting assemblies make contact with the mounting plate. Supporting constraint is added, the process sequence is optimized, welding deformation is effectively controlled, and the post-welding machining allowance requirement is met.

Description

Technical Field

[0001] The utility model relates to a slewing bearing connection component, in particular to an anti-deformation support for a slewing bearing connection component of an ultra-large tower crane turntable. Background Technique

[0002] A structural member of an ultra-large tower crane turntable manufactured by our company. This component is composed of 2 semi-circular turntables that are completely symmetrical. Its upper slewing bearing connection component is a key connection component. The installation surface of the slewing bearing mounting plate needs to be welded and assembled into a complete circle after the 2 semi-circular turntables, and then the overall machining is carried out. The theoretical machining allowance is required to be controlled within 5 - 10 mm, that is: ideally, the flatness of the mounting plate after welding < 5 mm, and the maximum is not allowed to exceed 10 mm.

[0003] The general welding process is as follows: The semi-circular slewing bearing mounting plate is composed of 3 mounting plates with a thickness of 150 mm each. Its butt welds cross with the circular web, and need to be pre-welded and shaped in sequence. Then, 2 inner circular webs and 3 outer circular webs are assembled with the slewing bearing mounting plate assembly and symmetrically welded to form the slewing bearing connection component.

[0004] Existing problems:

[0005] When assembling according to the semi-circular turntable components and welding in the free state, due to the accumulation of transverse shrinkage deformation, longitudinal shrinkage deformation and vertical angular deformation, it will cause large torsional deformation and inward turning. The free ends of the mating surfaces of the inner and outer circular webs are opened due to welding stress. The slewing bearing mounting plate is an ultra-thick plate (t150). The existing means of our company are difficult to correct the post-welding deformation, resulting in the flatness of the mounting plate being much greater than 10 mm, not meeting the overall machining requirements of the installation surface (machining allowance < 10 mm), and there will be local areas without machining allowance and surfacing treatment is required. Content of the Utility Model

[0006] To solve the defects of the above-mentioned existing technologies, the utility model provides an anti-deformation support for a slewing bearing connection component of an ultra-large tower crane turntable. The utility model increases support constraints, optimizes the process sequence, effectively controls welding deformation, and meets the requirements of machining allowance after welding.

[0007] To achieve the above technical objectives, the utility model adopts the following technical solutions: an anti-deformation support for a slewing bearing connection assembly of a super-large tower crane turntable, used to support the slewing bearing connection assembly, the slewing bearing connection assembly includes a mounting plate composed of two mounting plate half circles, an inner circular web composed of two inner circular web half circles, and an outer circular web composed of two outer circular web half circles, the inner circular web and the outer circular web are coaxially fitted and coaxially stand on the mounting plate; including two groups of inner support assemblies and a plurality of vertical support assemblies, the inner support assembly includes a transverse anti-deformation support rod and a longitudinal anti-deformation support rod, one end of the longitudinal anti-deformation support rod is fixed to the transverse anti-deformation support rod, and the other end abuts against the inner wall of the mounting plate half circle, and both ends of the transverse anti-deformation support rod abut against the inner wall of the mounting plate half circle to form a three-point support;

[0008] The plurality of vertical support components are capable of supporting the inner circular web and the outer circular web after bonding, and the bottom surfaces of the plurality of vertical support components contact the mounting plate.

[0009] Furthermore, the transverse anti-deformation support rod and the longitudinal anti-deformation support rod are perpendicular, and the longitudinal anti-deformation support rod is fixed at the midpoint of the transverse anti-deformation support rod.

[0010] Furthermore, the vertical support assembly adopts a vertical anti-deformation support plate, and the vertical anti-deformation support plate is provided with a clamping mouth, and the clamping mouth is used to clamp the inner circular web and the outer circular web after bonding; the long groove surface of the clamping mouth is fitted with the inner wall of the inner circular web; the vertical anti-deformation support plate is provided with a flat bottom surface, and the flat bottom surface abuts against the half circle of the mounting plate.

[0011] In summary, the utility model has achieved the following technical effects:

[0012] The utility model optimizes the process sequence, splits the two slewing bearing connection components into half circles, and sequentially combines the slewing bearing mounting plate, the inner circular web plate, and the outer circular web plate into a full circle for assembly, thereby increasing the rigidity of the entire component and facilitating resistance to welding deformation;

[0013] The utility model increases support constraints, and adopts anti-deformation supports in steps according to the welding sequence to perform constraints in the horizontal, longitudinal and vertical directions in three dimensions, so as to achieve the purpose of controlling the overall welding deformation (target: the flatness of the slewing bearing mounting plate after welding is 5mm);

[0014] The utility model has very little investment cost, and only needs to add 2 transverse anti-deformation supports, 2 longitudinal anti-deformation supports, and 12 vertical anti-deformation supports at one time, and the investment cost accounts for a relatively low proportion;

[0015] The utility model is simple and convenient to use, and the flatness of the slewing bearing installation plate after welding is less than 6mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the use state of the deformation prevention support of the slewing bearing connection component of an extra-large tower crane turntable;

[0017] Figure 2 It is a schematic diagram of the inner support component;

[0018] Figure 3 It is a schematic diagram of the vertical support component;

[0019] Figure 4 Assembly state one;

[0020] Figure 5 Assembly state two;

[0021] Figure 6 Assembly state three;

[0022] Figure 7 Assembly state four;

[0023] Figure 8 Assembly state five;

[0024] Figure 9 Assembly state six;

[0025] Figure 10 It is a schematic diagram of double-sided welding. Specific implementation manner

[0026] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] This specific embodiment is only an interpretation of the present utility model, and it is not a limitation of the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present utility model, it is protected by the patent law.

[0028] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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 should not be construed as a limitation of the present utility model.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0030] In the present utility model, unless otherwise clearly defined and limited, the terms such as "mounted", "connected", "connected to", "fixed" and the like shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0032] Embodiment:

[0033] A deformation-preventing support for a slew bearing connection assembly of an ultra-large tower crane turntable, which is used to support the slew bearing connection assembly. The slew bearing connection assembly includes a mounting plate composed of two semi-circular mounting plates 2-1, an inner circular web composed of two semi-circular inner circular webs 2-3, and an outer circular web composed of two semi-circular outer circular webs 2-3. The inner circular web and the outer circular web are coaxially fitted and stand coaxially on the mounting plate.

[0034] Figure 1 It is a schematic diagram of the use state of a deformation-preventing support for a slew bearing connection assembly of an ultra-large tower crane turntable. The present utility model includes two groups of inner support assemblies and a plurality of vertical support assemblies.

[0035] Figure 2It is a schematic diagram of the inner support assembly. The inner support assembly includes a transverse anti-deformation support rod 3 and a longitudinal anti-deformation support rod 4. One end of the longitudinal anti-deformation support rod 4 is fixed to the transverse anti-deformation support rod 3, and the other end abuts against the inner wall of the half mounting plate 2-1. Both ends of the transverse anti-deformation support rod 3 abut against the inner wall of the half mounting plate 2-1, forming a three-point support.

[0036] Specifically, the transverse anti-deformation support rod 3 and the longitudinal anti-deformation support rod 4 are perpendicular, and the longitudinal anti-deformation support rod 4 is fixed at the midpoint of the transverse anti-deformation support rod 3.

[0037] One transverse anti-deformation support rod 3 and one longitudinal anti-deformation support rod 4 form a set of inner support assemblies. Two sets of inner support assemblies each support a half circle, and after the support is completed, they are combined together, as Figure 1 shown in the state.

[0038] The multiple vertical support assemblies can support the inner circular web and the outer circular web after being fitted together, and the bottom surfaces of the multiple vertical support assemblies contact the mounting plate.

[0039] Figure 3 It is a schematic diagram of the vertical support assembly. The vertical support assembly uses a vertical anti-deformation support plate 5. The vertical anti-deformation support plate 5 is provided with a clamping opening 501. The clamping opening 501 is used to clamp the inner circular web and the outer circular web after being fitted together, so as to prevent the fitting surface from opening due to welding stress; the long groove surface 502 of the clamping opening 501 fits the inner wall of the inner circular web to prevent the circular web from tilting and deforming; the vertical anti-deformation support plate 5 is provided with a flat bottom surface 503, and the flat bottom surface 503 abuts against the half mounting plate 2-1 to prevent the inner ring of the mounting plate from deforming.

[0040] Usage process:

[0041] The half mounting plate 2-1 of the slewing bearing is first composed of 3 small sections with a thickness of 150 mm each. Its splicing welds cross with the circular web and need to be pre-welded and shaped in advance. Two half mounting plates 2-1 are manufactured;

[0042] The inner support assembly is assembled inside the half mounting plate 2-1 to form Figure 4 the state shown;

[0043] Combine Figure 4 the two half circles in Figure 5 to form a circle, forming

[0044] The half inner circular web 2-2 is composed of 2 small sections. Two half inner circular webs 2-2 are manufactured to form Figure 6 the state shown;

[0045] Place the two semi-circular inner circular web plates 2-2 on the mounting plate to form Figure 7 the state shown;

[0046] The semi-circular outer circular web plate 2-3 is composed of 3 small segments. Manufacture two semi-circular outer circular web plates 2-3 to form Figure 8 the state shown;

[0047] Place the two semi-circular outer circular web plates 2-3 on the mounting plate and fit them to the semi-circular inner circular web plate 2-2. Clamp 12 vertical deformation prevention support plates 5 on the inner and outer circular web plates, and make the flat bottom surface 503 abut against the semi-circular mounting plate 2-1 to form Figure 9 the state shown;

[0048] Perform symmetric welding on the sides of the inner and outer circular web plates. The double-sided weld 6 is as Figure 10 shown;

[0049] After welding is completed, remove the inner support assembly and the vertical support assembly.

[0050] The above is only a preferred embodiment of the present invention, and it does not impose any form of limitation on the present invention. Any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention are all within the scope of the technical solution of the present invention.

Claims

1. A deformation-proof support for a slewing bearing connection assembly of a super-large tower crane turntable, used for supporting the slewing bearing connection assembly, the slewing bearing connection assembly comprising a mounting plate composed of two mounting plate half circles (2-1), an inner circular web composed of two inner circular web half circles (2-3), and an outer circular web composed of two outer circular web half circles (2-3), the inner circular web and the outer circular web being coaxially fitted and coaxially standing on the mounting plate; Features: It comprises two groups of inner support components and a plurality of vertical support components, wherein the inner support components comprise a transverse anti-deformation support rod (3) and a longitudinal anti-deformation support rod (4), one end of the longitudinal anti-deformation support rod (4) is fixed to the transverse anti-deformation support rod (3), and the other end abuts against the inner wall of the half circle (2-1) of the mounting plate, and both ends of the transverse anti-deformation support rod (3) abut against the inner wall of the half circle (2-1) of the mounting plate, thereby forming a three-point support; The plurality of vertical support components are capable of supporting the inner circular web and the outer circular web after bonding, and the bottom surfaces of the plurality of vertical support components contact the mounting plate.

2. The anti-deformation support of the slewing bearing connection assembly of the super-large tower crane turntable according to claim 1 is characterized in that: The transverse anti-deformation support rod (3) and the longitudinal anti-deformation support rod (4) are perpendicular, and the longitudinal anti-deformation support rod (4) is fixed at the midpoint of the transverse anti-deformation support rod (3).

3. The anti-deformation support of the slewing bearing connection assembly of the super-large tower crane turntable according to claim 1 is characterized by: The vertical support assembly adopts a vertical anti-deformation support plate (5), and the vertical anti-deformation support plate (5) is provided with a clamping opening (501), and the clamping opening (501) is used to clamp the inner circular web and the outer circular web after being bonded; the long groove surface (502) of the clamping opening (501) is bonded to the inner wall of the inner circular web; The vertical anti-deformation support plate (5) is provided with a flat bottom surface (503), and the flat bottom surface (503) abuts against the half circle (2-1) of the mounting plate.

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