Truss swivel system

Abstract

The utility model discloses a truss turning system which comprises an upper rotary table, a lower rotary table, an upper rotating table, a lower rotating table and a rotating mechanism. The lower turntable is fixed at the center of a rotating body of the lower bearing surface, and a lower spherical hinge matched with the upper spherical hinge is arranged on the top surface of the lower turntable; the annular track is arranged at the position horizontally flush with the lower rotating disc by taking the center position of the rotating body as the circle center; the supporting legs are fixed below the upper rotary table and can slide along the annular track; and the rotating body pushing piece is used for pushing the supporting feet to slide and is arranged between the supporting feet and the annular track. According to the rotating system of the truss, the connecting face of the rotating system and the rotated truss is expanded through the cross beams and the longitudinal beams, supporting points during rotating are increased through the annular rail and the supporting feet according to the expanded upper rotating disc, and rotating balance and stability of the rotated truss can be better achieved.

Description

Technical Field

[0001] The present application relates to the technical field of bridge engineering, and in particular to a truss rotation system. Background Art

[0002] For bridge structures, auxiliary structures and special equipment, the engineering structures are sometimes transferred by horizontal rotation according to engineering needs. The existing technology uses a ball joint as a horizontal rotation fulcrum. The ball joint usually includes an upper turntable and a lower turntable placed horizontally. The upper turntable and the lower turntable can rotate relative to each other, thereby realizing the horizontal rotation of the engineering structure. The lower turntable is usually a fixed and non-rotating part. Therefore, it is necessary to use a bracket or a support leg to achieve the stability of the lower turntable and provide a certain load-bearing function to support the deadweight of the rotated engineering structure. However, the conventional lower turntable structure only uses the lower turntable itself as the main fulcrum, and requires high assembly accuracy of the ball joint. Utility Model Content

[0003] In view of the shortcomings of the existing methods, the present application proposes a truss rotation system to solve the technical problem of insufficient balance and stability during rotation in the related technology.

[0004] The present application provides a truss rotation system, which includes:

[0005] The upper turntable is used to support the truss to be rotated, and an upper ball joint is provided at the center;

[0006] A lower turntable is fixed at the center of the swivel of the lower bearing surface, and a lower ball joint is provided on the top surface thereof to cooperate with the upper ball joint;

[0007] The annular track is set at a position flush with the lower turntable with the center position of the rotating body as the center of the circle;

[0008] A support leg, fixed below the upper turntable and capable of sliding along the annular track;

[0009] The swivel pushing member is used for pushing the support leg to slide, and is arranged between the support leg and the annular track.

[0010] Optionally, the upper turntable includes a main beam that crosses the center of the rotating body, side beams arranged on both sides of the main beam in the longitudinal direction, and a longitudinal beam that orthogonally connects the main beam and the side beam.

[0011] Further optionally, the symmetry center of the main beam is provided with an upper ball joint protruding downward from its body, and an upper center hole vertically passing through the center point of the upper ball joint and aligned with the symmetry center is also provided, and the upper center hole is used to match the center position of the swivel.

[0012] Furthermore, the length of the main crossbeam is not less than the width of the rotated truss, and the top surface of the main crossbeam is provided with a main positioning component that cooperates with the rotated truss; the main crossbeam is also provided with a main connecting piece protruding longitudinally on both sides of its body for connecting the longitudinal beam.

[0013] Optionally, the side beam is arranged parallel to the main beam and has the same length as the main beam; the side of the side beam facing the main beam is provided with a side connector protruding longitudinally from its body for connecting to the longitudinal beam; the top surface of the side beam is provided with a side positioning component that cooperates with the rotated truss.

[0014] Optionally, the lower turntable includes a table-shaped base, a lower ball joint arranged on the top of the base, and a lower center hole vertically passing through the center point of the lower ball joint and aligned with the center of the base, wherein the lower center hole is used to match the center position of the swivel.

[0015] Further optionally, the top surface area of ​​the base is smaller than the bottom surface area, and the bottom surface is anchored to the lower supporting surface.

[0016] Furthermore, the annular track includes a plurality of arc-shaped I-beams and a plurality of anchoring assemblies arranged on the outer edges of the I-beams.

[0017] Furthermore, the support leg includes an upper support body and a lower support body which are engaged by threaded connection; and also includes a sliding seat connected to the bottom of the lower support body for cooperating with the annular track.

[0018] Optionally, each of the upper support bodies is equipped with two lower support bodies, and the two lower support bodies are arranged side by side along the axis of the annular track.

[0019] Further optionally, the side wall of the upper support body is provided with a connecting ear plate for assembling an adjustment support rod connected to the upper turntable, and / or for assembling the swivel push piece.

[0020] Furthermore, a rotating shaft corresponding to the center position of the rotating body is arranged between the upper rotating disk and the lower rotating disk; and a polytetrafluoroethylene sliding sheet is filled between the upper rotating disk and the lower rotating disk.

[0021] Optionally, a leveling layer is respectively arranged between the lower turntable and the annular track and the lower supporting surface.

[0022] The beneficial technical effects brought about by the technical solution provided by the embodiment of the present application include:

[0023] (1) The swivel system of the truss of the present application uses cross beams and longitudinal beams to expand the connection surface with the truss to be rotated, and uses circular tracks and support legs to increase the support points during rotation according to the enlarged upper turntable, which is conducive to better achieving the rotation balance and stability of the truss to be rotated.

[0024] (2) In the swivel system of the truss of the present application, the lower turntable adopts a platform-shaped base. The base structure with a small top and a large bottom is conducive to improving the load-bearing capacity of the base. Under the condition of the same load-bearing requirements, it is conducive to reducing the floor space of the lower turntable and adapting to more lower bearing surface conditions.

[0025] Additional aspects and advantages of the present application will be partially given in the following description, which will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0027] Figure 1 A schematic structural diagram of a truss rotation system provided in an embodiment of the present application;

[0028] Figure 2 A schematic diagram of a top view of a swivel system of a truss provided in an embodiment of the present application;

[0029] Figure 3 for Figure 2 A schematic diagram of the front structure of the main beam in FIG.

[0030] Figure 4 for Figure 3 A schematic diagram of the structure of the main beam from a top view;

[0031] Figure 5 for Figure 1 A schematic diagram of the structure of the lower turntable in FIG.

[0032] Figure 6 for Figure 5 A schematic diagram of the structure of the base from a top view;

[0033] Figure 7 for Figure 1 A schematic diagram of the structure of the support legs and the circular track;

[0034] Figure 8 A front structural view of a support leg in a swivel system of a truss provided in an embodiment of the present application;

[0035] Fig. 9 for Figure 8 A schematic diagram of the structure of the upper support body of the support leg viewed from above;

[0036] Fig.10 A schematic structural diagram of a support leg and a swivel push member in a swivel system of a truss provided in an embodiment of the present application. DETAILED DESCRIPTION

[0037] The embodiments of the present application are described below in conjunction with the drawings in the present application. It should be understood that the implementation methods described below in conjunction with the drawings are exemplary descriptions for explaining the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions of the embodiments of the present application.

[0038] Those skilled in the art will appreciate that, unless expressly stated, the "said" and "the" used herein may also include plural forms. It should be further understood that the term "including" used in the specification of the present application refers to the presence of the features, integers, steps, operations and / or components, but does not exclude the implementation of other features, information, data, steps, operations, elements, components and / or combinations thereof supported by the technical field. The term "and / or" used herein refers to at least one of the items defined by the term, for example, "A and / or B" may be implemented as "A", or as "B", or as "A and B".

[0039] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0040] refer to Figure 1 The truss rotation system of the present application can be selectively applied to the rotation construction of the truss located on the bridge deck, that is, the bridge deck is used as the lower bearing surface, the rotation center position is set on the bridge deck, and the truss arranged above the bridge deck is rotated horizontally.

[0041] The swivel system of the truss of the present application comprises: an upper swivel plate 1, a lower swivel plate 2, a circular track 3, a support leg 4 and a swivel push member 5.

[0042] Specifically, refer to Figures 1 to 5 The upper turntable 1 is used to support the truss to be rotated, and an upper ball joint 111 is provided at the center thereof. The upper ball joint 111 is equivalent to the ball head part of the ball joint structure. The ball joint is the core structure of the swivel system, responsible for supporting the weight of the truss and allowing the truss to rotate around its central axis. The ball joint is usually composed of two hemispherical components, one of which is called a ball head, which has a spherical surface for cooperating with a ball seat; the ball seat is another spherical component of the ball joint structure, whose shape matches the ball head, is used to receive the ball head, and allows the ball head to rotate freely within a certain range. The ball joint structure of the present application achieves horizontal rotation through the sliding cooperation of the upper ball joint 111 and the lower ball joint 21.

[0043] Furthermore, the upper turntable 1 includes a main beam 11, side beams 12 arranged on both sides of the main beam 11, and a longitudinal beam 13 orthogonally connecting the main beam 11 and the side beam 12. In this embodiment, the main beam 11 spans the width direction of the truss to support the truss, so that the main beam 11 is placed in the transverse direction, and the side beams 12 are respectively arranged on both sides of the main beam 11 along the longitudinal direction. Preferably, the side beams 12 are arranged with the main beam 11 as the axial symmetry center, so that when the symmetry center of the main beam 11 is set at the center of the swivel, the upper turntable 1 can be uniformly stressed. In order to provide sufficient and stable support for the truss, the lengths of the main beam 11 and the side beams 12 are adapted to the width of the truss, and a main positioning component 113 and a side positioning component 121 that cooperate with the truss are respectively provided.

[0044] The length of the main crossbeam 11 is not less than the width of the truss, so as to fully support the truss in the transverse direction, and a main positioning assembly 113 cooperating with the truss is arranged on the top surface 231 of the main crossbeam 11, and the main positioning assembly 113 includes a positioning plate arranged on the top surface 231 of the main crossbeam 11, and the setting position of the positioning plate is adapted to the structure of the truss and the contact position between the truss and the upper turntable 1, and a plurality of positioning plates are arranged on the top surface 231 of the main crossbeam 11; the positioning plate is used as a pad between the truss and the main crossbeam 11 on the one hand, and has a positioning function on the other hand, so as to realize the rapid positioning and installation of the upper turntable 1; the main positioning assembly 113 also includes a limit plate arranged at the ends of the longitudinal ends of the top surface 231 of the main crossbeam 11, and the limit plate abuts against the outer edge of the truss to prevent the truss from moving laterally from the main crossbeam 11. The main positioning assembly 113 can be fixed to the main crossbeam 11 in the form of welding or bolting. The main cross beam 11 is also provided with main connecting pieces 114 protruding longitudinally from both sides of the main body thereof for connecting with the longitudinal beams 13 . In this embodiment, the main cross beam 11 and the longitudinal beams 13 are connected by bolting.

[0045] The side cross beam 12 can be consistent in length with the main cross beam 11 and is arranged parallel to the main cross beam 11. The top surface 231 of the side cross beam 12 is provided with a side positioning component 121 that cooperates with the truss. The side positioning component 121 is arranged in a similar manner to the main positioning component 113. The side positioning component 121 includes a positioning plate arranged on the top surface 231 of the side cross beam 12, and a limit plate arranged at the ends of the longitudinal ends of the top surface 231 of the side cross beam 12; the side positioning component 121 can be fixed to the side cross beam 12 in the form of welding or bolting. The side cross beam 12 facing the main cross beam 11 is also provided with a side connector 122 protruding longitudinally on both sides of its body for connecting to the longitudinal beam 13. In this embodiment, the side cross beam 12 and the longitudinal beam 13 are connected by bolting.

[0046] Furthermore, an upper ball joint 111 that protrudes downward from its main body is provided at the symmetry center of the main crossbeam 11. The upper ball joint 111 is a spherical curved structure. The upper side of the upper ball joint 111 is fixedly connected to the main crossbeam 11, and reinforcing ribs are provided at the main crossbeam 11 to improve the load-bearing capacity of the upper ball joint 111. An upper center hole 112 that passes vertically through the center point of the upper ball joint 111 is provided. The upper center hole 112 is aligned with the symmetry center of the main crossbeam 11, and needs to match the center position of the swivel when the upper turntable 1 is installed. In this embodiment, the plane projection diameter of the upper ball joint 111 is 1.24m, the spherical radius is 2.6m, and it is made of 100mm thick steel plate.

[0047] Preferably, the main cross beam 11 and the side cross beam 12 of the upper turntable 1 are made of steel, which can be conveniently connected and fixed with the truss of the object to be rotated, which is also made of steel. The steels can form a relatively stable connection system through bolting or welding, which is also convenient for disassembly to achieve the truss drop after rotation. In addition, the connection system between the upper turntable 1 and the truss of the object to be rotated is conducive to forming a multi-directional, three-dimensional stress state during the truss rotation process, which better ensures the stability and safety of the rotation.

[0048] refer to Figure 1 , 5 6, the lower turntable 2 includes a base 23 and a lower ball joint 21 arranged on the top of the base 23. The base 23 is in the shape of a table with a small top and a large bottom, and the area of ​​the top surface 231 of the base 23 is smaller than the area of ​​the bottom surface 232; the top surface 231 of the base 23 is used to set the lower ball joint 21. In this embodiment, the lower ball joint 21 is also a spherical curved surface structure, which is consistent with the curvature of the upper ball joint 111. The lower ball joint 21 and the upper ball joint 111 can fit each other. Further, the center point of the lower ball joint 21 is provided with a vertically penetrating lower center hole 22, which is aligned with the symmetry center of the base 23, and needs to match the center position of the swivel when the lower turntable 2 is installed, that is, the lower center hole 22 is aligned with the upper center hole 112 of the upper ball joint 111. In this embodiment, the plane projection diameter of the lower ball joint 21 is 1.24m, the spherical radius is 2.6m, and it is made of 100mm thick steel plate. Furthermore, the machining accuracy requirements for the upper ball joint 111 and the lower ball joint 21 should be as follows: (1) the spherical surface roughness should not exceed Ra25; (2) the curvature of the spherical surface should be equal at all locations, and the difference in curvature radius should be within ±0.9 mm; (3) the elevation difference of each edge point should not exceed 1 mm; (4) the ellipticity should not exceed 1.5 mm; (5) the deviation between the upper center hole 112, the lower center hole 22 and the rotation center position should not exceed 2 mm.

[0049] When the ball joint is assembled, a rotating shaft 6 corresponding to the center position of the rotating body is set between the upper ball joint 111 and the lower ball joint 21, that is, the two ends of the rotating shaft 6 need to pass through the upper center hole 112 and the lower center hole 22 respectively, so that the upper ball joint 111 can rotate relative to the lower ball joint 21 with the rotating shaft 6 as the center, driving the upper turntable 1 to rotate. Furthermore, a plurality of polytetrafluoroethylene sliding plates are filled between the upper turntable 1 and the lower turntable 2. In this embodiment, according to the contact area between the upper ball joint 111 and the lower ball joint 21 and the area of ​​a single polytetrafluoroethylene sliding plate, 148 polytetrafluoroethylene sliding plates with a size of Ø60×20 mm are set on the lower ball joint 21.

[0050] The bottom surface 232 of the base 23 is used for anchoring with the lower bearing surface. In this embodiment, the lower bearing surface is the top surface 231 of the bridge. Usually, the bridge deck has certain transverse and longitudinal slopes, but the rotation construction requires the rotation system to provide a horizontal working surface. Therefore, a leveling layer 7 can be set between the bottom surface 232 of the base 23 and the bridge deck to compensate for the slope caused by the inclination of the bridge deck. In a possible implementation, the leveling layer 7 is filled with epoxy mortar. Furthermore, the bottom surface 232 of the base 23 is fixed to the bridge deck structure through the leveling layer 7 through the anchor assembly 32. The anchor assembly 32 can be an anchor rod including an anchor hole that penetrates the bottom surface 232 to reach the inside of the bridge deck, an anchor plate and an anchor nut that rest against the bottom surface 232. In order to facilitate the positioning of the anchor rod, the bridge deck can be pre-set with the center position of the rotation, and the corresponding embedded parts can be set. In this embodiment, the base 23 provides a circular top surface 231 to facilitate the setting of the lower ball joint 21, and the base 23 provides a square bottom surface 232. The bottom surface 232 is consistent with the vertical center of the top surface 231, but the area of ​​the bottom surface 232 is larger than the circumscribed square of the top surface 231, gradually expanding from the top surface 231 to the bottom surface 232, and multiple reinforcing ribs are set on the side wall.

[0051] refer to Figure 1 , 2and 7, the annular track 3 of the present embodiment includes a plurality of arc-shaped I-beams 31 and a plurality of anchoring assemblies 32 arranged on the outside of the I-beams. The anchoring assemblies 32 for anchoring the annular track 3 in the present embodiment may be the same as the anchoring assemblies 32 for anchoring the lower turntable 2, that is, they include anchoring holes penetrating through the bottom plate of the I-beams to reach the inside of the bridge deck, anchor pads and anchoring nuts resting against the bottom surface 232. The embodiment of the present application uses four sections of arc-shaped I-beams 31 to form the annular track 3, and the curvature of each section of the arc-shaped I-beam 31 is 90°. Each arc-shaped I-beam 31 is installed with the center position of the swivel as the center of the circle, and the entire annular track 3 does not exceed the projection area of ​​the upper turntable 1 on the lower bearing surface, and also needs to have intersections with the main crossbeam 11, the side crossbeam 12 and the longitudinal beam 13, so as to facilitate the setting of the support legs 4 at each intersection. The upper surface of the arc-shaped I-beam 31 serves as a sliding surface 311, which is tightly matched with the support leg 4, and the lower surface serves as an anchoring surface 312, which is anchored to the bridge deck. In this embodiment, the radius of the circular track 3 is 4.2m, and the upper surface width of the arc-shaped I-beam 31 is 0.3m. The swivel construction requires that the flat swivel surface be kept horizontal, so a leveling layer 7 is set between the bottom surface 232 of the arc-shaped I-beam 31 and the bridge deck to compensate for the slope caused by the inclination of the bridge deck. In a possible implementation, the leveling layer 7 is filled with epoxy mortar.

[0052] refer to Figure 1 and Figures 7 to 10 The support leg 4 includes an upper support body 41 and a lower support body 42, and the upper support body 41 and the lower support body 42 are interlocked by a threaded connection. A possible implementation method is that the upper support body 41 is a hollow body with an opening at the bottom, and the side wall of the bottom opening is provided with a section of internal thread. Correspondingly, the size of the lower support body 42 can match the bottom opening of the upper support body 41, and an external thread is provided on the outer wall of the lower support body 42, so that the lower support body 42 can mesh with the upper support body 41 to achieve connection. The threaded connection method is convenient for adjusting the elevation of the support leg 4. The support leg 4, the annular track 3 and the leveling layer 7 cooperate to adjust the elevation and horizontality of the upper turntable 1, so that the upper ball joint 111 and the lower ball joint 21 can fit closely. In this embodiment, the elevation difference of the upper surface of the arc I-beam 31 after leveling is not more than 5mm, and the theoretical load-bearing capacity of each support leg 4 is not less than 200 tons.

[0053] Optionally, the support legs 4 may be configured as a "double-tube" structure to improve the support capacity of the upper turntable 1 and the truss of the rotated body. Figure 8 and Fig. 9A possible implementation is that the upper support body 41 of each support leg 4 is equipped with two lower support bodies 42, and the two lower support bodies 42 are arranged side by side along the axis of the circular track 3; the upper support body 41 provides two side-by-side hollow bodies with bottom openings, and the upper support body 41 can make these two hollow bodies into an integral body, and the two lower support bodies 42 are independent of each other and are respectively embedded with one of the hollow bodies; the outer surface cross-sectional profile of the integrated upper support body 41 can be set to a waist shape, and the waist-shaped cross-sectional profile can provide a flat mounting surface and a curved mounting surface, so as to facilitate the arrangement of other auxiliary structures on the upper support body 41, such as a connecting ear plate 44.

[0054] Furthermore, the support leg 4 and the annular track 3 need to be closely matched so that the support leg 4 can slide on the annular track 3. Figure 7 and Figure 8 , a sliding seat 43 for cooperating with the annular track 3 is also provided at the bottom of the lower support body 42. In this embodiment, the sliding seat 43 includes a buckle plate that can buckle the bottom of the lower support body 42 and the upper surface of the arc-shaped I-beam 31 of the annular track 3 from both sides, and a reinforcement plate, a polytetrafluoroethylene slide plate and butter are filled between the bottom of the lower support body 42 and the upper surface of the arc-shaped I-beam 31, so that the bottom plate of the lower support body 42 and the upper surface of the arc-shaped I-beam 31 can fully fit and exclude air, thereby reducing sliding friction. The top of the upper support body 41 is connected to the upper turntable 1, and the specific connection method can be welding or bolting. The upper turntable 1 can be pre-set with a docking piece at the position where it is connected to the upper support body 41.

[0055] Furthermore, in a top-down perspective, there are several overlapping positions between the circular track 3 and the upper turntable 1. A support leg 4 can be set at each overlapping position to connect the upper turntable 1 and the circular track 3. When the support leg 4 slides along the circular track 3, it drives the upper turntable 1 to rotate. Preferably, the overlapping positions of the upper turntable 1 and the circular track 3 are evenly arranged on the circular track 3. In the present embodiment, there are eight overlapping positions, which are evenly and symmetrically distributed on the circular track 3.

[0056] Furthermore, the side wall of the upper support body 41 of the support leg 4 is provided with a connecting ear plate 44, referring to Figure 7 The connecting ear plate 44 is arranged at a position facing the center of the circular track 3, and an adjusting support rod 45 is arranged between the connecting ear plate 44 and the bottom of the upper turntable 1 to improve the supporting capacity of the support foot 4 to the upper turntable 1; preferably, reference Fig.10, the connecting ear plate 44 is arranged at a position facing the upper surface of the annular track 3, and a swivel pusher 5 is assembled between the connecting ear plate 44 and the annular track 3, and the swivel pusher 5 includes a pusher reaction frame detachably mounted on the annular track 3 and a pusher oil cylinder connecting the pusher reaction frame and the connecting ear plate 44. In this embodiment, at least two groups of swivel pushers 5 are arranged with the center position of the swivel as the rotational symmetry center as the power output source of the swivel. In this embodiment, the driving force of each group of swivel pushers 5 reaches 64 tons, and the structure of the swivel pusher 5 is not specifically limited here.

[0057] In summary, the swivel system of the truss of the present application includes: an upper turntable, used to support the truss to be rotated, with an upper ball joint at the center; a lower turntable, fixed at the center position of the swivel of the lower supporting surface, with a lower ball joint on the top surface cooperating with the upper ball joint; an annular track, with the center position of the swivel as the center, arranged at a position flush with the lower turntable; a support leg, fixed below the upper turntable and capable of sliding along the annular track; a swivel push member, used to push the support leg to slide, arranged between the support leg and the annular track. The swivel system of the truss of the present application utilizes crossbeams and longitudinal beams to expand the connection surface with the truss to be rotated, and utilizes annular tracks and support legs to increase the support points during rotation according to the enlarged upper turntable, which is conducive to better achieving the rotation balance and stability of the truss to be rotated.

[0058] Those skilled in the art will appreciate that the various operations, methods, steps, measures, and schemes in the processes discussed in this application may be alternated, changed, combined, or deleted. Furthermore, other steps, measures, and schemes in the various operations, methods, and processes discussed in this application may also be alternated, changed, rearranged, decomposed, combined, or deleted. Furthermore, steps, measures, and schemes in the related art that are similar to those disclosed in this application may also be alternated, changed, rearranged, decomposed, combined, or deleted.

[0059] In the description of the present application, the directions or positional relationships indicated by words such as "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the exemplary directions or positional relationships shown in the accompanying drawings. They are for the convenience of describing or simplifying the description of the embodiments of the present application, and do not indicate or imply that the referred device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present application.

[0060] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0061] In the description of this application, 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 direct connection, or an indirect connection 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 this application can be understood according to specific circumstances.

[0062] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0063] The above is only a partial implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the technical concept of the scheme of the present application, other similar implementation methods based on the technical ideas of the present application are also within the protection scope of the embodiments of the present application.

Claims

1. A truss rotation system, characterized in that: It includes: The upper turntable is used to support the truss to be rotated, and an upper ball joint is provided at the center; A lower turntable is fixed at the center of the swivel of the lower bearing surface, and a lower ball joint is provided on the top surface thereof to cooperate with the upper ball joint; The annular track is set at a position flush with the lower turntable with the center position of the rotating body as the center of the circle; A support leg, fixed below the upper turntable and capable of sliding along the annular track; The swivel pushing member is used for pushing the support leg to slide, and is arranged between the support leg and the annular track.

2. The swivel system of the truss according to claim 1, characterized in that: The upper turntable comprises a main beam that crosses the center of the rotating body, side beams arranged on both sides of the main beam in the longitudinal direction, and a longitudinal beam that orthogonally connects the main beam and the side beam.

3. The swivel system of the truss according to claim 2, characterized in that: The symmetry center of the main crossbeam is provided with an upper ball joint protruding downward from its body, and an upper center hole vertically penetrating the center point of the upper ball joint and aligned with the symmetry center is also provided, and the upper center hole is used to match the center position of the swivel.

4. The swivel system of the truss according to claim 2, characterized in that: The length of the main crossbeam is not less than the width of the rotated truss, and the top surface of the main crossbeam is provided with a main positioning component that cooperates with the rotated truss; the main crossbeam is also provided with a main connecting piece protruding longitudinally on both sides of its body for connecting the longitudinal beam.

5. The swivel system of the truss according to claim 4, characterized in that: The side crossbeam is arranged parallel to the main crossbeam and has the same length as the main crossbeam; the side of the side crossbeam facing the main crossbeam is provided with a side connecting piece protruding longitudinally from its body for connecting the longitudinal beam; the top surface of the side crossbeam is provided with a side positioning component that cooperates with the rotated truss.

6. The swivel system of the truss according to claim 1, characterized in that: The lower turntable includes a table-shaped base, a lower ball joint arranged on the top of the base, and a lower center hole vertically passing through the center point of the lower ball joint and aligned with the center of the base, wherein the lower center hole is used to match the center position of the swivel.

7. The swivel system of the truss according to claim 6, characterized in that: The top surface area of ​​the base is smaller than the bottom surface area, and the bottom surface is anchored to the lower supporting surface.

8. The swivel system of the truss according to claim 1, characterized in that: The annular track includes a plurality of arc-shaped I-beams and a plurality of anchoring assemblies arranged on the outer edges of the I-beams.

9. The swivel system of the truss according to claim 1, characterized in that: The support leg comprises an upper support body and a lower support body which are engaged with each other by means of a threaded connection; and further comprises a sliding seat connected to the bottom of the lower support body and used for cooperating with the annular track.

10. The swivel system of the truss according to claim 9, characterized in that: Each of the upper supporting bodies is equipped with two lower supporting bodies, and the two lower supporting bodies are arranged side by side along the axis of the annular track.

11. The swivel system of the truss according to claim 9, characterized in that: The side wall of the upper support body is provided with a connecting ear plate for assembling an adjusting support rod connected to the upper turntable, and / or for assembling the swivel push piece.

12. The swivel system of the truss according to claim 1, characterized in that: A rotating shaft corresponding to the center position of the rotating body is arranged between the upper rotating disk and the lower rotating disk; and a polytetrafluoroethylene sliding sheet is filled between the upper rotating disk and the lower rotating disk.

13. The swivel system of the truss according to claim 1, characterized in that: A leveling layer is respectively arranged between the lower turntable and the annular track and the lower bearing surface.

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