Steel truss piece lifting and turning-over device
By designing a rotatable turnover wheel and a steel truss truss lifting device with a limiting mechanism, the wear problem caused by large friction during the turnover process of the steel truss is solved, and the stability of the turnover process and the protection of the turnover wheel are achieved.
Patent Information
- Application Number
- CN202422276939.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-18
AI Technical Summary
The friction between the steel truss and the support pad during the turnover process is large, which can easily cause wear of the support pad and the steel truss.
A steel truss truss lifting and flip-up device is designed, using a rotatable flip-up wheel and a limiting mechanism. The other end of the steel truss is lifted through the lifting equipment, so that the flip-up wheel rotates with the steel truss posture, reducing friction and providing stable support.
It reduces the friction between the steel truss and the turnover wheel during the turnover process, protects the turnover wheel to extend its service life, and reduces wear and paint loss on the surface of the steel truss, improving the stability of the turnover process.
Smart Images
Figure CN223133952U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of steel truss construction, and particularly relates to a hoisting and turning device for steel truss girders. Background Art
[0002] At present, steel truss structures are widely used in modern bridge projects. Due to their excellent mechanical properties, high strength and good seismic performance, they have become an important part of long-span bridge structures. The lightweight and high-strength characteristics of steel truss structures make their applications in bridge construction, especially in long-span bridges and viaducts, more and more common. However, with the increase in the scale of bridges, the size and weight of steel truss structures have also increased correspondingly, which has brought great challenges to operations such as hoisting and turning during the construction process. For example, in the reconstruction project of the Canal Bridge on the East-West Avenue in Yuhang District, the involved steel truss structure has the characteristics of large size and heavy weight.
[0003] For these large-sized and heavy-weight steel truss structures, the traditional turning method is to set support pads at the bottom of the steel truss, use a gantry crane to lift the other side of the steel truss, and then erect the steel truss to facilitate the next hoisting work of the steel truss. During the turning process, mutual friction and collision will occur between the steel truss and the support pads, which is likely to cause wear of the support pads and the steel truss.
[0004] Therefore, at present, a technical solution is needed to solve the technical problem that during the turning process of the steel truss, the friction with the support pads is relatively large, which is likely to cause wear of the support pads and the steel truss. Summary of the Utility Model
[0005] The purpose of the utility model is to overcome the technical problem that during the turning process of the steel truss, the friction with the support pads is relatively large, which is likely to cause wear of the support pads and the steel truss, and provide a hoisting and turning device for steel truss girders.
[0006] The utility model provides a hoisting and turning device for steel truss girders, which includes a base. A number of limiting mechanisms are arranged side by side on the base. The limiting mechanism includes a support frame, and a turnable turning wheel is provided on the support frame. A notch groove for supporting the end of the steel truss is arranged on the turning wheel.
[0007] The utility model relates to a movable hoisting and turning-over device for steel trusses. When in use, the steel truss is placed on a jig, the base is moved under the steel truss, and the end of the steel truss is inserted into the notch groove on the turning-over wheel. The other end of the steel truss is lifted by a hoisting device to turn over the steel truss. During the turning-over process, the turning-over wheel can rotate following the posture of the steel truss, reducing the friction between the inner wall of the notch groove and the steel truss, protecting the turning-over wheel for support, prolonging its service life, and also playing a role in protecting the steel truss, reducing paint peeling and wear on the surface of the steel truss. During the turning-over process, the turning-over wheel rotates as the center of gravity of the steel truss changes, always providing stable support for the steel truss and enhancing the stability of the steel truss during the turning-over process.
[0008] Preferably, the support frame includes two columns, a rotating shaft is arranged between the two columns, and the turning-over wheel is connected to the rotating shaft.
[0009] The rotatable installation of the turning-over wheel on the base is realized, so that it can rotate correspondingly during the turning-over process of the steel truss.
[0010] Preferably, diagonal braces are respectively connected to both sides of the column. One end of the diagonal brace is connected to the column, and the other end is connected to the base.
[0011] The two diagonal braces respectively support both sides of the column, strengthening the structural strength of the column and avoiding damage such as bending and shaking of the column during the turning-over process of the steel truss.
[0012] Preferably, two supporting surfaces are arranged on the turning-over wheel, and the two supporting surfaces form the notch groove. The two supporting surfaces respectively support the bottom surface and the end surface notch groove of the steel truss.
[0013] The notch groove formed by the two mutually perpendicular supporting surfaces is adapted to the shape of the end of the steel truss, enabling the end of the steel truss to be more easily inserted into the notch groove, and at the same time making the contact surfaces of the two supporting surfaces of the notch groove with the steel truss larger, enhancing the stability of the steel truss during the turning-over process.
[0014] Preferably, a first jack is arranged on each of the supporting surfaces, and the two first jacks are respectively used to abut against the bottom surface and the end surface of the steel truss.
[0015] The bottom surface and the side surface of the steel truss can be effectively supported, making the turning-over process of the steel truss smoother.
[0016] Preferably, a rubber pad is arranged at the end of the first jack.
[0017] The steel truss and the first jack are in soft contact, reducing scratches and wear on the surface of the steel truss.
[0018] Preferably, limiting plates are respectively arranged on both sides of the supporting surface, and a limiting component for restricting the rotation angle of the limiting plate is arranged on the base.
[0019] By arranging limiting plates at positions corresponding to the supporting surface on the turnover rotating wheel and simultaneously arranging a limiting component for restricting the rotation angle of the limiting plate on the base, the limiting plates are in contact with the limiting component during the rotation of the turnover rotating wheel, thereby controlling the rotation angle of the turnover rotating wheel. By adjusting the angle of the limiting plates, the rotation angle that the turnover rotating wheel can rotate is controlled, and further the adjustment of the turnover angle of the steel truss is realized.
[0020] Preferably, the limiting component includes four support rods, and the four support rods are symmetrically arranged on both sides of the turnover rotating wheel. A support plate is arranged at the top of each support rod, and the support plates are arranged horizontally.
[0021] When the steel truss is placed horizontally, the support plates on two of the support rods are in contact with the limiting plates on both sides of one supporting surface on the turnover rotating wheel, playing an initial positioning role for the turnover rotating wheel. After the turnover is in place, the support plates on the other two support rods are in contact with the limiting plates on both sides of the other supporting surface on the turnover rotating wheel, controlling the final turnover angle of the steel truss.
[0022] It is convenient to drive the base to move through the driving wheels, so as to facilitate the matching of the position of the base with the position of the steel truss on the tire rack.
[0023] Preferably, a plurality of second jacks are arranged at the bottom of the base, and the second jacks are used to contact the ground.
[0024] When the base reaches near the steel truss and the position is adjusted, the height of the base can be adjusted through the second jacks, so that the end of the steel truss can be embedded into the notch groove of the turnover rotating wheel at the upper part of the base. At the same time, in the case of uneven working road surface, the level of the base can also be adjusted through the jacks to avoid the phenomenon of shaking during the use of the base, and improve the safety of the steel truss turnover process.
[0025] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0026] 1. The present utility model provides a device for hoisting and turning over steel truss girders. During the turnover process, the turnover rotating wheel can rotate following the posture of the steel truss, reducing the friction between the inner wall of the notch groove and the steel truss, protecting the turnover rotating wheel for support, and prolonging its service life.
[0027] 2. The present utility model provides a device for hoisting and turning over steel truss girders. During the turnover process, the turnover rotating wheel can rotate following the posture of the steel truss, reducing the friction between the inner wall of the notch groove and the steel truss, playing a role in protecting the steel truss, and reducing the paint peeling and wear on the surface of the steel truss.
[0028] 3. The utility model provides a lifting and turning device for steel truss girders. During the turning process, the turning wheel rotates as the center of gravity of the steel truss changes, always providing stable support for the steel truss and enhancing the stability of the steel truss during the turning process. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 is the front view of a lifting and turning device for steel truss girders of the present utility model;
[0030] Figure 2 is the top view of a lifting and turning device for steel truss girders of the present utility model;
[0031] Figure 3 is the schematic structural diagram of the turning wheel of the present utility model;
[0032] Figure 4 is the usage state diagram of a lifting and turning device for steel truss girders of the present utility model at the initial stage of turning;
[0033] Figure 5 is the usage state diagram of a lifting and turning device for steel truss girders of the present utility model after turning is completed;
[0034] Reference numerals in the drawings:
[0035] 1 - base, 2 - support frame, 21 - column, 22 - diagonal brace, 3 - turning wheel, 31 - notch groove, 311 - support surface, 32 - limiting plate, 4 - rotating shaft, 5 - limiting component, 51 - support rod, 511 - support plate, 6 - first jack, 61 - rubber pad, 7 - traveling wheel, 8 - second jack, 9 - steel truss, 10 - jig. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0036] The following further describes the present utility model in detail with reference to specific embodiments. However, this should not be construed as limiting the scope of the above - mentioned subject matter of the present utility model to the following embodiments. All technologies implemented based on the content of the present utility model belong to the scope of the present utility model.
[0037] In the description of the specific embodiments of the present utility model, without special explanation, the expression terms of the orientation or position relationship such as "upper", "lower", "left", "right", "center", "inner", "outer", etc. are all based on the orientation or position relationship shown in the drawings, or the orientation or position relationship when the product / device / equipment of the present utility model is commonly used. These terms of orientation or position relationship are only for the convenience of describing the solution of the present utility model or simplifying the description in the specific embodiments, facilitating technicians to quickly understand the solution, rather than indicating or implying that a specific device / component / element must have a specific orientation or be constructed and operated in a specific position relationship. Therefore, it should not be construed as a limitation to the present utility model.
[0038] In addition, when terms such as "horizontal", "vertical", "hanging", and "parallel" appear, it does not mean that the corresponding device / component / element is required to be absolutely horizontal or vertical or hanging or parallel, but it can be slightly inclined or deviated. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and it does not mean that the structure must be completely horizontal, but it can be slightly inclined. Or, it can be simply understood that the corresponding device / component / element is arranged in directions such as "horizontal", "vertical", "hanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the solution of the present utility model.
[0039] In addition, when expressions such as "first", "second", "third", etc. appear in the terms, they are only used to distinguish the description of the same or similar components, and should not be understood as emphasizing or implying the relative importance of specific components.
[0040] In addition, in the description of the embodiments of the present utility model, "several", "multiple", and "a plurality of" represent at least 2. It can be any situation such as 2, 3, 4, 5, 6, 7, 8, 9, etc., and can even be a situation exceeding 9.
[0041] In addition, in the description of the technical solution of the present utility model, unless otherwise clearly specified / defined / limited, when terms such as "set", "installed", "connected", "connected to", "provided with", "laid", "arranged" appear, they 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 connection means commonly used in the art such as welding, riveting, bolting, and threaded connection. Such a connection can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components.
[0042] Embodiment 1
[0043] As Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 shown, a hoisting and turning-over device for a steel truss girder includes a base 1. A number of limiting mechanisms are arranged side by side on the base 1. The limiting mechanism includes a support frame 2. A rotatable turning-over wheel 3 is provided on the support frame 2. A notch groove 31 for supporting the end of the steel truss 9 is arranged on the turning-over wheel 3.
[0044] During use, the steel truss 9 is placed on the jig 10. The base 1 is moved under the steel truss 9, and the end of the steel truss 9 is inserted into the notch groove 31 on the turnover wheel 3. The other end of the steel truss 9 is lifted by a hoisting device to perform the turnover operation on the steel truss 9. During the turnover process, the turnover wheel 3 can rotate following the attitude of the steel truss 9, reducing the friction between the inner wall of the notch groove 31 and the steel truss 9, protecting the turnover wheel 3 used for support, extending its service life, and at the same time playing a role in protecting the steel truss 9, reducing paint peeling and wear on the surface of the steel truss 9. During the turnover process, the turnover wheel 3 rotates as the center of gravity of the steel truss 9 changes, always providing stable support for the steel truss 9 and enhancing the stability of the turnover process of the steel truss 9.
[0045] Support frame 2: The support frame 2 includes two columns 21. A rotating shaft 4 is provided between the two columns 21, and the turnover wheel 3 is connected to the rotating shaft 4, realizing the rotatable installation of the turnover wheel 3 on the base 1, so that it can rotate correspondingly during the turnover process of the steel truss 9. Further, diagonal braces 22 are respectively connected to both sides of the column 21. One end of the diagonal brace 22 is connected to the column 21, and the other end is connected to the base 1. The two diagonal braces 22 respectively support both sides of the column 21, strengthening the structural strength of the column 21 and preventing damage such as bending and shaking of the column during the turnover process of the steel truss 9.
[0046] Notch groove 31: Two support surfaces 311 are provided on the turnover wheel 3, and the two support surfaces 311 form the notch groove 31. The two support surfaces 311 respectively support the bottom surface and the end face notch of the steel truss 9. The notch groove 31 formed by the two mutually perpendicular support surfaces 311 is adapted to the shape of the end of the steel truss 9, making it easier for the end of the steel truss 9 to be inserted into the notch groove 21. At the same time, the contact surfaces between the two support surfaces 311 of the notch groove 21 and the steel truss 9 are larger, and the support surfaces 311 and the steel truss 9 have a mutual limiting effect during the turnover process of the steel truss 9, enhancing the stability of the turnover process of the steel truss 9. A first jack 6 is provided on each support surface 31, and the two first jacks 6 are respectively used to abut against the bottom surface and the end face of the steel truss 9, enabling the bottom surface and the side surface of the steel truss 9 to be effectively supported, so that the turnover process of the steel truss 9 is smoother. Further, a rubber pad 61 is provided at the top of the first jack 6, making the contact between the steel truss 9 and the first jack 6 a soft contact, reducing scratches and wear on the surface of the steel truss 9.
[0047] Limit on the rotation process of the turnover wheel 3: Limit plates 32 are respectively arranged on both sides of the supporting surface. A limit component 5 for restricting the rotation angle of the limit plate 32 is arranged on the base 1. By arranging the limit plate 32 at the position corresponding to the supporting surface 311 on the turnover wheel 3, and at the same time arranging the limit component 5 for restricting the rotation angle of the limit plate 32 on the base 1, during the rotation process of the turnover wheel 3, the limit plate 32 abuts against the limit component 5, thereby controlling the rotation angle of the turnover wheel 3. By adjusting the angle of the limit plate 32, the rotation angle that the turnover wheel 3 can rotate is controlled, and further the adjustment of the turnover angle of the steel truss 9 is realized; Limit component 5: The limit component 5 includes four support rods 51. The four support rods 51 are symmetrically arranged on both sides of the turnover wheel 3. A support plate 511 is provided at the top of each support rod 51. The support plate 511 is horizontally arranged. When the steel truss 9 is placed horizontally, the support plates 511 on two of the support rods 51 abut against the limit plates 32 on both sides of one supporting surface 311 of the turnover wheel 3, playing an initial positioning role for the turnover wheel. After the turnover is in place, the support plates 511 on the other two support rods 51 abut against the limit plates 32 on both sides of the other supporting surface 311 of the turnover wheel 3, controlling the final turnover angle of the steel truss 9.
[0048] Embodiment 2
[0049] As Figure 1 and Figure 4 shown, in this embodiment, the difference from Embodiment 1 is that traveling wheels 7 are arranged at the bottom of the base 1.
[0050] In this embodiment, the base 1 is driven to move by the traveling wheels 7, so as to facilitate the matching of the position of the base 1 with the position of the steel truss 9 on the tire rack 10.
[0051] Furthermore, a number of second jacks 8 are arranged at the bottom of the base 1. The second jacks 8 are used to abut against the ground. When the base 1 reaches near the steel truss 9 and the position is adjusted, the height of the base 1 can be adjusted by the second jacks 8, so that the end of the steel truss 9 can be embedded into the notch groove of the turnover wheel 3 at the upper part of the base 1. At the same time, in the case of uneven working road surface, the level of the base 1 can also be adjusted by the second jacks 8 to avoid the phenomenon of shaking during the use of the base 1, and improve the safety of the turnover process of the steel truss 9.
[0052] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A lifting and turning device for steel truss girders, characterized in that, It includes a base (1), on which a number of limiting mechanisms are arranged side by side. The limiting mechanism includes a support frame (2), on which a rotatable turning wheel (3) is provided. A notch groove (31) for supporting the end of the steel truss (9) is arranged on the turning wheel (3). Two support surfaces (311) are arranged on the turning wheel (3), and the two support surfaces (311) form the notch groove (31). The two support surfaces (311) respectively support the bottom surface and the end surface of the steel truss (9).
2. The steel truss girder lifting and turning device according to claim 1, characterized in that, The support frame (2) includes two columns (21), and a rotating shaft (4) is arranged between the two columns (21). The turning wheel (3) is connected to the rotating shaft (4).
3. The steel truss girder lifting and turning device according to claim 2, characterized in that, Diagonal braces (22) are respectively connected to both sides of the column (21). One end of the diagonal brace (22) is connected to the column (21), and the other end is connected to the base (1).
4. A steel truss lifting and turning device according to claim 1, characterized in that, A first jack (6) is arranged on each of the support surfaces (311), and the two first jacks (6) are respectively used to abut against the bottom surface and the end surface of the steel truss (9).
5. The steel truss girder lifting and turning device according to claim 4, characterized in that, A rubber pad (61) is arranged at the end of the first jack (6).
6. The steel truss girder lifting and turning device according to claim 1, wherein Limiting plates (32) are respectively arranged on both sides of the support surface, and a limiting component (5) for restricting the rotation angle of the limiting plate (32) is arranged on the base (1).
7. The steel truss girder lifting and turning device according to claim 6, characterized in that The limiting component (5) includes four support rods (51), and the four support rods (51) are symmetrically arranged on both sides of the turning wheel (3). A support plate (511) is arranged at the top of each support rod (51), and the support plate (511) is horizontally arranged.
8. A steel truss girder lifting and turning device according to any one of claims 1-7, characterized in that, Travel wheels (7) are arranged at the bottom of the base (1).
9. The steel truss girder lifting and turning device according to claim 8, characterized in that, A number of second jacks (8) are arranged at the bottom of the base (1), and the second jacks (8) are used to abut against the ground.