Temporary support structure for large cantilever space truss roof

Abstract

The utility model provides a large -scale cantilever space truss roof's temporary support structure relates to truss support technical field, include: at least two support sections, each support section is connected in turn in vertical direction, each support section includes standard section, lower connecting plate and upper connecting plate, quick detachable flange is provided on lower connecting plate and upper connecting plate, two quick detachable flanges of adjacent two support sections are butted, so that adjacent support sections are connected in vertical direction alignment, the cover plate is set up on the upper connecting plate of the uppermost support section. The utility model has the advantages of: through the concave-convex stop of standard section and quick detachable flange cooperation and high -strength bolt friction connection, realize no welding dismounting, turnover rate is multiplied; the coaxial round slide groove of cover plate and support section, gear engagement make to support seat can be in 360 degree stepless fine adjustment and lock, adapt to any cantilever angle, the axial torque transmission is formed to the support bar and support seat of key, slot insertion, R type pin is inserted and locked, and tool operation is exempted.

Description

Technical Field

[0001] This utility model relates to the field of truss support technology, and in particular to a temporary support structure for a large cantilevered space truss roof. Background Technology

[0002] Large cantilevered truss roofs are widely used in current large-scale construction projects. Temporary support structures are indispensable to ensure the stability and safety of these truss roofs during construction. Currently, common temporary support structures are often assembled on-site by splicing standard sections and welding them together with struts. Standard sections, as basic units, possess a certain degree of versatility and modularity. By combining them, a support system framework adapted to the truss roof can be roughly constructed, providing initial fulcrums and a foundation for roof installation. This splicing method, to a certain extent, meets the requirements of large-scale projects for the scale and basic functions of temporary support structures and has been practically applied in numerous past projects.

[0003] However, existing temporary support structures rely on struts at their upper ends for support. These struts are typically installed directly onto the standard section by welding. In actual construction scenarios, on-site workers must weld the required number and length of struts, a cumbersome process that consumes significant time and manpower, severely slowing down construction progress. This approach fails to match the advantages of rapid connection and disassembly offered by new technologies and makes it difficult to achieve efficient assembly of struts and temporary nodes on-site, thus failing to meet the demands of modern large-scale engineering projects for efficient and convenient construction. Utility Model Content

[0004] In view of this, embodiments of the present invention provide a temporary support structure for a large cantilevered space truss roof, which solves the technical problem of poor flexibility in the on-site welding connection of the upper end of the existing temporary support structure.

[0005] Embodiments of this utility model provide a temporary support structure for a large cantilevered space truss roof, comprising:

[0006] At least two support sections are connected sequentially in the vertical direction. Each support section includes a standard section, a lower plate and an upper plate. Both the lower plate and the upper plate are provided with quick-release flanges. Adjacent support sections are connected to each other through the two quick-release flanges, so that the adjacent support sections are aligned and connected in the vertical direction.

[0007] A cover plate is disposed on the upper connecting plate of the uppermost support section, and the cover plate is provided with at least two pairs of support rods;

[0008] At least two pairs of support seats, one of the support rods is continuously and detachably connected to one of the support seats, the surface of the cover plate is provided with a sliding groove, the two support seats are movably disposed in the sliding groove, the bottom end of each support seat is provided with a small gear, the inner wall of the sliding groove is provided with external teeth, the small gear meshes with the external teeth, the support seat moves in the sliding groove, and the support seat rotates relative to the sliding groove through the meshing of the small gear and the external teeth;

[0009] The device includes a limiting component, which comprises a limiting disc, a positioning ring, a limiting bushing, and a connecting shaft. The bottom end of the limiting disc has a slot, and the limiting bushing is inserted into the slot. The connecting shaft is connected to the center of the slot and extends to the outside of the slot. The limiting bushing is disposed on the upper end of the pinion and is movably connected to the connecting shaft. The rotation of the limiting disc and the positioning ring is restricted, thereby restricting the rotation of the support seat connected to the limiting disc, and thus limiting its position in the slide groove.

[0010] Furthermore, the edge of the limiting disc is provided with a concave edge, which fits the outer surface arc of the positioning ring, thereby restricting the rotation of the limiting disc relative to the positioning ring.

[0011] Furthermore, the multiple supporting rods can be spliced ​​together in the vertical direction. Each supporting rod includes a pin and a tube. The tube is disposed at the upper end of the pin. Adjacent supporting rods are spliced ​​together by inserting the tubes into the pins.

[0012] Furthermore, the upper end of the support is provided with a hole, and the number of pins is the same as the number of holes. The pins are inserted into the seat cylinder.

[0013] Furthermore, the outer wall of the limiting bushing has multiple vertical grooves, and the inner wall of the slot has a protrusion. The protrusion is inserted into the vertical groove, so that the relative rotation of the limiting bushing is restricted after it is inserted into the slot.

[0014] Furthermore, the limiting bushing has a shaft hole in the middle, the connecting shaft is rotatably and slidably connected to the shaft hole, and the end of the connecting shaft is provided with a backstop to prevent it from coming out of the shaft hole.

[0015] Furthermore, a retaining ring is provided on the upper part of the inner wall of the groove, and the retaining ring is attached to the upper surface of the pinion to restrict the axial runout of the pinion.

[0016] Furthermore, the slide groove has an opening on one side of the cover plate, and the opening corresponds to the size of the limiting bushing, so that the number of the supporting seats placed in the slide groove is variable.

[0017] Furthermore, the slide groove is circular and is coaxially arranged with the quick-release flange.

[0018] Furthermore, it also includes a floor mat, which is connected to the lower connecting plate at the bottom of each of the standard sections, for contacting the ground to ensure that the bottom standard section is placed stably.

[0019] The beneficial effects of the technical solution provided by the embodiments of this utility model are as follows: The temporary support structure of the large cantilevered space truss roof of this utility model achieves welding-free assembly and disassembly through the concave-convex stop fit of the standard section and the quick-release flange and the friction connection of high-strength bolts, thus doubling the turnover rate; the circular sliding groove and gear meshing of the cover plate and the support section are coaxial, allowing the support seat to be steplessly adjusted and locked in 360° to adapt to any cantilever angle; the keyed and slotted support rods and the support seats form an axial torque transmission, and the R-type pins lock with one insertion, eliminating the need for tool operation; the double locking structure of the limit plate eliminates wind vibration slippage, and the retaining ring controls the axial runout of the gear, ensuring long-term reliable meshing; the side opening allows for modular addition and subtraction of the support seats, reducing material waste by arranging points as needed; there is no on-site welding throughout the process, significantly reducing the risk of high-altitude operations, and simultaneously improving construction efficiency, positioning accuracy and safety. Attached Figure Description

[0020] Figure 1 This is an overall three-dimensional view of the temporary support structure for the large cantilevered space truss roof of this utility model;

[0021] Figure 2 This is a three-dimensional view of the connection between the upper and lower connecting plates of the temporary support structure for the large cantilevered space truss roof of this utility model.

[0022] Figure 3 This is a three-dimensional view of the cover plate of the temporary support structure for the large cantilevered space truss roof of this utility model;

[0023] Figure 4 This is a three-dimensional view of the struts of the temporary support structure for the large cantilevered space truss roof of this utility model;

[0024] Figure 5 This is a bottom view of the limiting plate of the temporary support structure of the large cantilevered space truss roof of this utility model.

[0025] In the diagram: 1. Standard section; 2. Lower connecting plate; 3. Upper connecting plate; 4. Cover plate; 5. Quick-release flange; 6. Support seat; 7. Support rod; 71. Pin; 72. Rod tube; 8. Slide groove; 81. Opening; 9. External gear; 10. Pinion; 11. Limiting bushing; 111. Vertical groove; 12. Slot; 13. Connecting shaft; 14. Limiting disc; 141. Concave flange; 142. Raised strip; 15. Shaft hole; 16. Positioning ring; 17. Retaining ring. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be further described below with reference to the accompanying drawings. The following description presents a preferred embodiment of several possible embodiments of this utility model, intended to provide a basic understanding of the utility model, but not intended to identify the key or decisive elements of the utility model or to limit the scope of protection sought.

[0027] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0028] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures. Also, it should be understood that, for ease of description, the dimensions of the various parts shown in the figures are not drawn to actual scale.

[0030] In the description of this utility model, it should be noted that the circuits, electronic components and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated. The content protected by this utility model does not involve any improvement to the internal structure and method.

[0031] It should be further noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] Please refer to Figure 1 The present invention provides a temporary support structure for a large cantilevered space truss roof, including at least two support sections, a cover plate 4, at least two counter-supports 6, and limiting components.

[0033] Each support section includes a standard section 1, a lower connecting plate 2, an upper connecting plate 3, and a quick-release flange 5. The main chord of the standard section 1 is connected to the lower connecting plate 2 and the upper connecting plate 3 by full-circumference fillet welds, with a weld height of not less than 10 mm. The quick-release flange 5 consists of two semi-circular rings: the upper ring is welded to the lower surface of the upper connecting plate 3, and the lower ring is welded to the upper surface of the lower connecting plate 2; the two rings are fastened together by 12 M24-10.9S high-strength bolts.

[0034] It should be noted that the concave-convex stop of the quick-release flange 5 is aligned at the center during hoisting, and the bolts only need to be tightened by 0.75 times the design preload to form a rigid node, which shortens the installation time of a single section to 10 minutes. At the same time, the friction-type high-strength bolts can be "reversely removed" after the roof is unloaded, so that the support sections can be removed layer by layer without cutting, which significantly improves the turnover rate.

[0035] Please refer to Figure 1 and Figure 3 In this embodiment, the cover plate 4 is coaxially connected to the upper plate 3 of the uppermost support section with the same set of quick-release flanges 5. A circular groove 8 is precision machined on the upper surface of the cover plate 4. The groove 8 is 35 mm deep and 60 mm wide, and shares a central axis with the quick-release flange 5.

[0036] This design, with its coaxial arrangement, ensures that the roof load center coincides with the support center, with a maximum eccentricity of ≤2 mm, thereby minimizing the additional bending moment. The arc-shaped track of the slide 8 allows for continuous adjustment of the support 6 within a 360° range to meet the needs of different cantilever angles.

[0037] In one specific embodiment, a small gear 10 with a module m = 2.5 mm is integrally cast at the bottom of the support 6, which meshes with the external teeth 9 on the inner wall of the slide groove 8. A limiting bushing 11 is welded to the upper end of the small gear 10, and four vertical grooves 111 are evenly distributed on the outer wall of the limiting bushing 11.

[0038] Understandably, the gear meshing converts manual thrust into precise angular displacement, with each tooth rotation corresponding to 2.5°, achieving millimeter-level positioning; the meshing pair also bears horizontal force, reducing wear on the sidewalls of the slide groove 8.

[0039] A slot 12 is formed on the lower surface of the limiting plate 14, and a protrusion 142 corresponding to the vertical groove 111 is provided on the inner wall of the slot 12; the connecting shaft 13 passes through the shaft hole 15 of the limiting bushing 11, and the end is secured by a cotter pin. When the limiting plate 14 is pressed down, the protrusion 142 is inserted into the vertical groove 111, and at the same time, the concave edge 141 of the limiting plate 14 is engaged with the positioning ring 16 welded on the cover plate 4.

[0040] During use, the protrusion 142 and the vertical groove 111 restrict circumferential rotation, while the concave edge 141 and the positioning ring 16 restrict revolution, so that the support 6 maintains an angular accuracy of ±0.2° under load or construction vibration; the limit plate 14 can be lifted to unlock instantly, enabling tool-free quick adjustment.

[0041] Please refer to Figures 3 to 5 In an optional embodiment, the support rod 7 consists of a pin 71 and a rod cylinder 72. The lower end of the pin 71 is provided with a guide key, and the upper end of the rod cylinder 72 is provided with a corresponding keyway. The gap between the key and the slot is 0.1 mm. Adjacent pairs of support rods 7 are fixed by inserting them together and then passing R-type pins through them. The lowermost pin 71 is inserted into the seat cylinder 61 of the support base 6. The seat cylinder 61 is also provided with a guide key and an O-ring seal.

[0042] The key and slot combination allows for the transmission of torque while simultaneously transmitting axial force, preventing thread loosening; the R-pin enables "one-plug lock," with an installation time of less than 15 seconds; the O-ring prevents dust from entering, ensuring that the insertion accuracy remains even after multiple uses.

[0043] Furthermore, a retaining ring 17 is welded to the upper part of the inner wall of the slide groove 8, and the lower surface of the retaining ring 17 maintains a gap of 0.5mm with the upper surface of the pinion 10.

[0044] Thus, the retaining ring 17 limits the axial runout of the pinion 10 to ≤0.5 mm, preventing the gear from disengaging due to vibration during high-altitude operations and ensuring that the meshing pair is always in the designed contact area.

[0045] To facilitate increasing or decreasing the number of support seats 6, the slide 8 has an opening 81 on the side of the cover plate 4. The net width of the opening 81 is 65 mm, which is slightly larger than the outer diameter of the limiting bushing 11.

[0046] In this way, the support brackets 6 can be slid in or removed from the side at any time according to the number of roof sections, without disassembling the cover plate 4, thus achieving "on-demand placement" and reducing material waste.

[0047] Finally, in this embodiment, a floor mat is also included, which is connected to the bottom plate 2 of each standard section to make contact with the ground so that the bottom standard section is placed stably.

[0048] In this document, the directional terms such as front, back, top, and bottom are defined based on the location of the components in the accompanying drawings and their relative positions to each other, solely for the purpose of clarity and convenience in expressing the technical solution. It should be understood that these are relative concepts and can vary depending on the method of use and placement; the use of directional terms should not limit the scope of protection claimed in this application.

[0049] Where there is no conflict, the above embodiments and features described herein can be combined with each other.

[0050] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A temporary support structure for a large cantilevered spatial truss roof, characterized in that... ,include: At least two support sections are connected sequentially in the vertical direction. Each support section includes a standard section (1), a lower plate (2), and an upper plate (3). Both the lower plate (2) and the upper plate (3) are provided with quick-release flanges (5). Two adjacent support sections are connected to each other through the two quick-release flanges (5), so that the adjacent support sections are aligned and connected in the vertical direction. A cover plate (4) is provided on the upper plate (3) of the uppermost support section, and the cover plate (4) is provided with at least two pairs of support rods (7). At least two pairs of support seats (6), one of the support rods (7) is continuously and detachably connected to one of the support seats (6), the surface of the cover plate (4) is provided with a sliding groove (8), the two support seats (6) are movably disposed in the sliding groove (8), each of the support seats (6) is provided with a small gear (10) at the bottom end, the inner wall of the sliding groove (8) is provided with an external tooth (9), the small gear (10) meshes with the external tooth (9), the support seat (6) moves in the sliding groove (8), and the support seat (6) rotates relative to the sliding groove (8) through the meshing of the small gear (10) and the external tooth (9); And a limiting component, the limiting component including a limiting disk (14), a positioning ring (16), a limiting bushing (11) and a connecting shaft (13), the bottom end of the limiting disk (14) is provided with a slot (12), the limiting bushing (11) is inserted into the slot (12), the connecting shaft (13) is connected to the axis of the slot (12) and extends to the outside of the slot (12), the limiting bushing (11) is disposed on the upper end of the pinion (10) and is movably connected to the connecting shaft (13), the rotation of the limiting disk (14) and the positioning ring (16) is restricted, so that the rotation of the support seat (6) connected to the limiting disk (14) is restricted, thereby restricting its position in the slide groove (8).

2. The temporary support structure for the large cantilevered space truss roof as described in claim 1, characterized in that: The edge of the limiting disk (14) is provided with a concave edge (141), which is in contact with the outer surface arc of the positioning ring (16), thereby restricting the rotation of the limiting disk (14) relative to the positioning ring (16).

3. The temporary support structure for the large cantilevered space truss roof as described in claim 1, characterized in that: Multiple of the aforementioned support rods (7) can be spliced ​​together in the vertical direction. Each of the aforementioned support rods (7) includes a pin (71) and a rod tube (72). The rod tube (72) is disposed at the upper end of the pin (71). Adjacent support rods (7) are spliced ​​together by inserting the rod tube (72) into the pin (71).

4. The temporary support structure for the large cantilevered space truss roof as described in claim 3, characterized in that: The upper end of the support base (6) is provided with a hole, and the number of pins (71) is the same as the number of holes. The pins (71) are inserted into the support base (6).

5. The temporary support structure for a large cantilevered space truss roof as described in claim 1, characterized in that: The outer wall of the limiting bushing (11) has multiple vertical grooves (111), and the inner wall of the slot (12) is provided with a protrusion (142). The protrusion (142) is inserted into the vertical groove (111), so that the relative rotation of the limiting bushing (11) is restricted after it is inserted into the slot (12).

6. The temporary support structure for a large cantilevered space truss roof as described in claim 1, characterized in that: The limiting bushing (11) has a shaft hole (15) in the middle. The connecting shaft (13) is rotatably and slidably connected to the shaft hole (15). The end of the connecting shaft (13) is provided with a backstop to prevent it from coming out of the shaft hole (15).

7. The temporary support structure for a large cantilevered space truss roof as described in claim 1, characterized in that: A retaining ring (17) is provided on the upper part of the inner wall of the slide groove (8). The retaining ring (17) is attached to the upper surface of the pinion (10) to restrict the axial runout of the pinion (10).

8. The temporary support structure for a large cantilevered space truss roof as described in claim 1, characterized in that: The slide groove (8) has an opening (81) on one side of the cover plate (4). The opening (81) corresponds to the size of the limiting bushing (11), so that the number of the support seats (6) inserted into the slide groove (8) is variable.

9. The temporary support structure for a large cantilevered space truss roof as described in claim 1, characterized in that: The slide (8) is circular and is coaxially arranged with the quick-release flange (5).

10. The temporary support structure for a large cantilevered space truss roof as described in claim 1, characterized in that: It also includes a floor mat, which is connected to the lower plate (2) at the bottom of each of the standard sections, and is used to contact the ground so that the bottom standard section is placed stably.

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