Temporary fixing device for dismounting lower beam of laminated slab

Abstract

The utility model relates to the technical field of building construction, in particular to a temporary fixing device for dismounting a lower beam of a laminated slab, which comprises a sleeve capable of being inserted into a connecting hole of the laminated slab, an inner support rod capable of being inserted into the sleeve, and a connecting rope connected to the inner support rod, the sleeve comprises a limiting part, a guiding part and a fixing part, the limiting part can abut against the bottom face of the lower beam, the guiding part penetrates through the lower beam, the fixing part extends into the connecting hole, the fixing part is arranged to be a deformable fixing part, and the inner supporting rod can support the fixing part when being inserted into the fixing part so that the fixing part can be in interference insertion connection with the connecting hole. According to the utility model, the sleeve, the inner supporting rod and the protective sleeve are arranged, so that the existing problems are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a temporary fixing device for disassembling the lower beam of a composite slab. Background Technology

[0002] Precast slabs are prefabricated components used in building construction for floor installation. The concrete layer of a precast slab is typically between 8 and 12 centimeters thick. During on-site construction, a concrete layer is poured on top of the slab to form a unified floor slab. Currently, precast slabs usually have trusses installed on the upper side of the concrete layer to improve the overall bending resistance of temporary fixing devices used for dismantling the lower beams during storage and transportation.

[0003] Currently, trusses mostly consist of web reinforcement cast integrally into the concrete layer and transverse reinforcement connected to the top of the web reinforcement. In a patent application with publication number CN114059702B, the applicant has applied for protection of a composite slab. By setting the transverse reinforcement to a structure that can be detachably connected to the web reinforcement, the transverse reinforcement can be easily removed after on-site casting, so as to recycle the transverse reinforcement and reduce construction costs.

[0004] The applicant has conducted research and development improvements on the prior product, and has strengthened the composite slab by adding a detachable lower beam (generally by pre-casting threaded connection components in the composite slab and fixing the lower beam to the lower side of the composite slab with bolts).

[0005] After the composite slab is installed and poured on-site, the lower beam needs to be removed from the underside of the slab for easy recycling. Since the height of the lower side of the composite slab is typically above 2.9 meters (the minimum standard for building floor height), workers often need to use stirrups to dismantle the lower beam at different connection points. To prevent the lower beam from suddenly falling or becoming difficult to secure during the dismantling process, the dismantling procedure requires at least two people working together: one to dismantle and one to assist with securing and supporting the beam. To simplify the labor intensity and difficulty of the operation, the applicant has proposed the temporary fixing device for dismantling the lower beam of the composite slab. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a temporary fixing device for disassembling the lower beam of a composite slab. By setting a sleeve, an inner support rod, and a protective sleeve, the existing problems are effectively solved.

[0007] To address the aforementioned problems, this utility model provides a temporary fixing device for disassembling the lower beam of a composite slab, comprising a sleeve that can be inserted into a connecting hole of the composite slab, an inner support rod that can be inserted into the sleeve, and a connecting rope connected to the inner support rod; the sleeve includes a limiting part that can abut against the bottom surface of the lower beam, a guide part that passes through the lower beam, and a fixing part that extends into the connecting hole, the fixing part being configured as a deformable fixing part, and the inner support rod supporting the fixing part when inserted into the fixing part, so that the fixing part can be interference-fitted into the connecting hole.

[0008] Furthermore, the fixing part includes a plurality of guide ribs connected to the guide part, and each guide rib is arranged circumferentially around the sleeve. The fixing device also includes a rubber sleeve fixed to the outside of each guide rib.

[0009] Furthermore, the limiting part is integrally formed and connected with the guiding part and the guiding rib.

[0010] Furthermore, the fixing part is configured as a plastic fixing part.

[0011] Furthermore, the fixing device also includes a protective sleeve that can cover the outside of the lower beam.

[0012] Furthermore, the protective sleeve includes a fixing groove connected to the lower beam and a buffer layer covering the outside of the fixing groove.

[0013] Furthermore, the buffer layer includes an air bladder.

[0014] Furthermore, the airbag has a rubber layer on its outer side.

[0015] Furthermore, the upper section of the wall of the fixing groove is provided with a recessed snap-fit ​​part.

[0016] Furthermore, the fixing groove is magnetically connected to the lower beam.

[0017] The beneficial effect of this utility model is that by setting up a sleeve, an inner support rod, and a protective sleeve, the existing problems are effectively solved. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0019] Figure 1 This is a bottom view of the structure of an embodiment of the present invention when disassembling a lower beam of a composite plate.

[0020] Figure 2 for Figure 1 The illustrated embodiment is shown in a partial cross-sectional view of the inner strut location.

[0021] Figure 3 for Figure 2 The illustrated embodiment is shown as a top-down sectional view of the structure at the guide rib location.

[0022] The components are: 1. Sleeve; 101. Limiting part; 102. Guide part; 103. Fixing part; 2. Inner support rod; 3. Connecting rope; 4. Snap-fit ​​part; 5. Guide rib; 6. Rubber sleeve; 7. Fixing groove; 8. Airbag; 9. Rubber layer; 10. Connecting hole. Detailed Implementation

[0023] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0024] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0025] Furthermore, it should be understood in the description of this utility model that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two main bodies at the connection point are not connected by an intermediate structure, but are simply connected to form a whole through a connecting structure. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0027] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0028] In this utility model, such as Figures 1 to 3 As shown, a temporary fixing device for disassembling the lower beam of a composite slab is provided, including a sleeve 1 that can be inserted into a connecting hole 10 of the composite slab, an inner support rod 2 that can be inserted into the sleeve 1, and a connecting rope 3 connected to the inner support rod 2; the sleeve 1 includes a limiting part 101 that can abut against the bottom surface of the lower beam, a guide part 102 that passes through the lower beam, and a fixing part 103 that extends into the connecting hole 10. The fixing part 103 is configured to be deformable. When the inner support rod 2 is inserted into the fixing part 103, it can support the fixing part 103 so that the fixing part 103 can be interference-fitted with the connecting hole 10.

[0029] When using the fixing device of this utility model, after the worker removes the bolts at the fixing points of the lower beam, the sleeve 1 can be passed through the lower beam and inserted into the connecting hole 10 of the composite plate. Then, the inner support rod 2 is inserted into the fixing part 103 from the bottom of the sleeve 1. The inner support rod can support the fixing part 103, so that the fixing part 103 is interference-fitted and fixed in the connecting hole 10. At this time, the lower beam can be further supported and fixed by the limiting part 101. After the bolts at each fixing point of the lower beam are removed, the worker can pull each inner support rod 2 downward at the same time after avoiding the lower side of the lower beam, so that the inner support rod is separated from the fixing part 103. After the fixing part 103 loses the internal support of the inner support rod, the connection stability between the fixing part 103 and the hole wall of the connecting hole 10 decreases. At this time, the lower beam can be touched or dragged by external force to make the lower beam separate from the composite plate and fall down.

[0030] The fixing device of this utility model can fix the lower beam with the sleeve 1 and the inner support rod when the worker disassembles the connection between the lower beam and the composite plate, so as to prevent the lower beam from falling suddenly. Thus, the lower beam of this utility model can be fixed without the need for a special person to support it, making it suitable for single-person disassembly operation.

[0031] In the illustrated embodiment, for the structure of this utility model, more specifically, the fixing part 103 includes a plurality of guide ribs 5 connected to the guide part 102, each of the guide ribs 5 being arranged circumferentially around the sleeve 1, and the fixing device further includes a rubber sleeve 6 fixed to the outside of each of the guide ribs 5.

[0032] As shown in the figure, by providing multiple guide ribs 5 (three in the embodiment shown in the figure) at the fixing part 103, the inner support rod can easily enter and exit the fixing part 103. By fixing the rubber sleeve 6 to the outside of the guide rib 5, the friction between the fixing part 103 and the wall of the connecting hole 10 can be increased, thus preventing the fixing part 103 from arbitrarily dislodging from the connecting hole 10. The multiple guide ribs 5 provide deformation space by utilizing the gap between adjacent guide ribs 5 after the inner support rod is removed from the fixing part 103, thereby reducing the outward supporting force of the guide ribs 5 on the rubber sleeve 6, and further reducing the friction between the rubber sleeve 6 and the wall of the connecting hole 10, so as to facilitate the separation of the lower beam from the composite plate.

[0033] In the illustrated embodiment, more specifically, regarding the structure of this utility model, the limiting part 101 is integrally formed and connected with the guiding part 102 and the guiding rib 5.

[0034] In the illustrated embodiment, more specifically, the fixing part 103 is configured as a plastic fixing part 103.

[0035] In the illustrated embodiment, to further specify the structure of this utility model, the fixing device also includes a protective sleeve that can cover the outer side of the lower beam.

[0036] As shown in the figure, by setting up a protective sleeve, after the connecting bolts between the lower beam and the composite plate are separated, the protective sleeve can be wrapped around the outside of the lower beam. This reduces the impact of the lower beam on the ground when it falls to the ground after being separated from the composite plate, thereby improving the safety of disassembling the lower beam. At the same time, by installing the protective sleeve near the sleeve 1, the impact on the sleeve 1 and the inner support rod during the fall of the lower beam can be reduced.

[0037] In the illustrated embodiment, specifically regarding the structure of this utility model, the protective sleeve includes a fixing groove 7 connected to the lower beam and a buffer layer covering the outside of the fixing groove 7. By providing the fixing groove 7, the protective sleeve can be easily connected and fixed to the lower beam, and the fixing groove 7 can also mitigate the impact damage to the protective layer caused by the lower beam during its descent.

[0038] In a preferred embodiment, specifically regarding the structure of this invention, the buffer layer includes an airbag 8. As shown in the figure, by employing the airbag 8 for buffering, when the lower beam needs to be disassembled, air can be injected into the airbag 8 through its nozzle (the inflation volume is approximately one-third to two-thirds of the airbag 8's volume). This prevents the airbag 8 from elastically bouncing when the lower beam falls. During this process, the nozzle can also be opened to further release the impact energy of the lower beam by venting. When not in use, the gas can be released through the airbag 8's nozzle.

[0039] In a preferred embodiment, a further specific optimization of the structure of this utility model is that a rubber layer 9 is provided on the outer side of the airbag 8. Specifically, the outer side of the airbag 8 can be protected by a rubber layer 9 made from recycled waste inner tubes, so as to reduce the possibility of the airbag 8 being punctured by foreign objects such as gravel, steel nails, and wires at the construction site.

[0040] In the illustrated embodiment, for the connection between the fixing groove 7 and the lower beam, more specifically, the upper section of the groove wall of the fixing groove 7 is provided with a recessed snap-fit ​​part 4.

[0041] In the embodiment shown, the lower beam has a circular cross-section, and the snap-fit ​​part 4 can snap onto the upper side of the centerline of the lower beam to connect the fixing groove 7 with the lower beam. When applied to a square tube lower beam, the snap-fit ​​part 4 can also directly abut against the side wall of the lower beam.

[0042] In an alternative embodiment, the connection between the fixing groove 7 and the lower beam can also be configured such that the fixing groove 7 is magnetically connected to the lower beam. Specifically, magnets can be provided on the side wall or bottom wall of the fixing groove 7 to achieve magnetic connection with the lower beam.

[0043] It should be noted that in the illustrated embodiment, the inner support, sleeve, and protective sleeve are offset from each other. Figure 2 In order to better demonstrate the structure of the protective sleeve, the protective sleeve is dissected and displayed.

[0044] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0045] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A temporary fixing device for disassembling the lower beam of a composite slab, characterized in that, Includes a sleeve that can be inserted into the connecting hole of the composite plate, an inner support rod that can be inserted into the sleeve, and a connecting rope connected to the inner support rod; The sleeve includes a limiting part that can abut against the bottom surface of the lower beam, a guide part that passes through the lower beam, and a fixing part that extends into the connecting hole. The fixing part is configured to be deformable. When the inner support rod is inserted into the fixing part, it can support the fixing part so that the fixing part can be interference-fitted into the connecting hole.

2. The temporary fixing device for disassembling the lower beam of a composite slab according to claim 1, characterized in that, The fixing part includes a plurality of guide ribs connected to the guide part, and each guide rib is arranged circumferentially around the sleeve. The fixing device also includes a rubber sleeve fixed to the outside of each guide rib.

3. The temporary fixing device for disassembling the lower beam of a composite slab according to claim 2, characterized in that, The limiting part is integrally formed and connected with the guiding part and the guiding rib.

4. A temporary fixing device for disassembling the lower beam of a composite slab according to claim 2, characterized in that, The fixing part is a plastic fixing part.

5. A temporary fixing device for disassembling the lower beam of a composite slab according to claim 1, characterized in that, The fixing device also includes a protective sleeve that can cover the outside of the lower beam.

6. A temporary fixing device for disassembling the lower beam of a composite slab according to claim 5, characterized in that, The protective sleeve includes a fixing groove connected to the lower beam and a buffer layer covering the outside of the fixing groove.

7. A temporary fixing device for disassembling the lower beam of a composite slab according to claim 6, characterized in that, The buffer layer includes an airbag.

8. A temporary fixing device for disassembling the lower beam of a composite slab according to claim 7, characterized in that, The airbag has a rubber layer on the outside.

9. A temporary fixing device for disassembling the lower beam of a composite slab according to claim 6, characterized in that, The upper section of the wall of the fixing groove is provided with a recessed snap-fit ​​part.

10. A temporary fixing device for disassembling the lower beam of a composite slab according to claim 6, characterized in that, The fixing groove is magnetically connected to the lower beam.

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