Concrete deformation joint supporting and fixing device suitable for narrow space

Abstract

The utility model relates to the technical field of supporting and fixing devices, and discloses a concrete deformation joint supporting and fixing device suitable for a narrow space, which comprises an outer template matched with a load-bearing wallboard in size and an inner template lower than the outer template, a plurality of horizontal inner fixing transverse rods matched with the outer fixing transverse rods are arranged on the side face of the inner formwork, a plurality of through-wall threaded rods penetrate through the inner fixing transverse rods, a plurality of threaded holes matched with the through-wall threaded rods are formed in the outer fixing transverse rods, the through-wall threaded rods penetrate through the inner fixing transverse rods, and the inner formwork and the outer formwork are in threaded connection with the threaded holes. According to the concrete deformation joint supporting device, the through-wall threaded rod penetrates through the inner formwork and the outer formwork to be in threaded connection with the threaded hole in the outer fixing transverse rod, the outer fixing transverse rod and the inner fixing transverse rod are locked by matching with the locking nut, the concrete deformation joint in the large-area narrow space can be conveniently supported and fixed, and the application range of the whole device is widened.

Description

Technical Field

[0001] This utility model relates to the field of support and fixing device technology, specifically a support and fixing device for concrete expansion joints suitable for confined spaces. Background Technology

[0002] Building expansion joints are gaps reserved between buildings to ensure that the building has enough room for deformation. When pouring concrete for building expansion joints, it is necessary to first tie the reinforcing bars and set up the formwork, and then use a support and fixing device to support and fix the formwork.

[0003] A search revealed a patent, CN208105870U, which discloses a fixing device and a double-column formwork support device for expansion joints. This device includes two support parts for supporting the formwork and connectors for connecting the support parts. Each support part has a through hole for connecting tie rods. In implementation, the fixing device is placed between two frame column formwork support devices. Tie rods connect the frame column formwork template and the support parts of the fixing device. Utilizing the effective space of the expansion joint, this fixing device integrates the two independent frame column formwork support devices into a single unit, enhancing the stability of the formwork support device. The principle is reliable. This fixing device has a simple structure, is lightweight and easy to manufacture, is easy to install and disassemble, is recyclable, environmentally friendly, practical, and has good quality control and significant expected benefits.

[0004] The aforementioned patents have significant beneficial effects, but in practical application, they still have the following shortcomings:

[0005] The aforementioned comparative document describes a rectangular fixing device placed between two sets of formwork to be poured concrete, used to support and fix the expansion joint formwork. However, in reality, building expansion joints are often located between two load-bearing wall panels. If the areas of the two load-bearing wall panels are large, it is difficult to place the fixing device in the middle of the horizontal direction of the expansion joint, thus reducing the applicability of the support and fixing device. Therefore, there is an urgent need in the art to improve the support and fixing device to overcome the shortcomings of the prior art. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a concrete expansion joint support and fixing device suitable for confined spaces, which facilitates the support and fixing of concrete expansion joints in large-area confined spaces and improves the overall applicability of the device.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a concrete expansion joint support and fixing device suitable for confined spaces, comprising an outer template adapted to the size of the load-bearing wall panel and an inner template with a height lower than the outer template. The outer template has several horizontal outer fixing crossbars on its side, and the inner template has several horizontal inner fixing crossbars adapted to the outer fixing crossbars on its side. Several through-wall threaded rods are passed through the inner fixing crossbars, and several threaded holes adapted to the through-wall threaded rods are opened on the outer fixing crossbars. The through-wall threaded rods pass through the inner fixing crossbars, the inner template, and the outer template and are threadedly connected to the threaded holes. A locking nut that abuts against the inner fixing crossbar is threaded to the side of the through-wall threaded rod away from the outer template. End plates are provided on both sides between the facing sides of the outer template and the inner template.

[0008] Preferably, both the outer and inner templates include several custom rigid plates. Two symmetrical connecting plates are fixedly connected to one side of each custom rigid plate. Several through-holes are provided on the connecting plates. The custom rigid plates are fixedly installed by fasteners passing through the through-holes.

[0009] Preferably, the upper part of the outer template is provided with an anti-deformation plate, and several connecting bolts that are threaded through the anti-deformation plate and connected to the upper part of the customized rigid plate are passed through the anti-deformation plate. Two symmetrical lifting rings are fixedly connected to the upper part of the anti-deformation plate.

[0010] Preferably, a central reinforcing rib is fixedly connected to one side of the custom rigid plate, and the central reinforcing rib is located in the middle of the two connecting plates.

[0011] Preferably, a baffle is fixedly connected to the upper part of the anti-deformation plate, and one side of the baffle is flush with one side of the outer template.

[0012] Preferably, one end of the through-wall threaded rod is fixedly connected to a snap-fit ​​block, which is polygonal in shape.

[0013] Preferably, both the threaded hole and the end of the through-wall threaded rod are chamfered.

[0014] To address the shortcomings of existing technologies, this utility model provides a concrete expansion joint support and fixing device suitable for confined spaces, overcoming the deficiencies of existing technologies. The beneficial effects of this utility model are as follows:

[0015] 1. In this utility model, the threaded rod passes through the inner template and the outer template and is threaded to the threaded hole on the outer fixed crossbar. The outer fixed crossbar and the inner fixed crossbar are locked with the locking nut, which facilitates the support and fixation of concrete deformation joints in large and narrow spaces and improves the applicability of the overall device.

[0016] 2. In this utility model, several custom rigid plates are connected and fixed by several fasteners through the through-connecting holes of the connecting plate, which facilitates the combination of large-area expansion joint wall panels. In addition, the custom rigid plates are provided with central reinforcing ribs in the middle, which improves the support and fixing effect of the overall device.

[0017] 3. In this utility model, the anti-deformation plate is fixedly installed on the upper part of the outer formwork by connecting bolts to prevent the outer formwork from deforming after long-term use. The lifting ring facilitates the hoisting of the outer formwork, and the baffle blocks the overflow of concrete, preventing concrete from falling onto the support and fixing device and making it difficult to disassemble later.

[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures pointed out in the description, claims, and drawings. Attached Figure Description

[0019] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model after installation;

[0021] Figure 2 This is a schematic diagram of the structure of a set of outer and inner templates after installation in this utility model;

[0022] Figure 3 This is a structural schematic diagram of a set of outer and inner templates after installation, from another perspective.

[0023] Figure 4 for Figure 1 Enlarged structural diagram at point A in the middle;

[0024] Figure 5 for Figure 2 Enlarged structural diagram at point B;

[0025] Figure 6 for Figure 3 Enlarged structural diagram at point C.

[0026] In the diagram: 1. Outer template; 2. Inner template; 3. Outer fixed crossbar; 4. Inner fixed crossbar; 5. Threaded hole; 6. Through-wall threaded rod; 7. Locking nut; 8. End plate; 9. Connecting plate; 10. Through connection hole; 11. Anti-deformation plate; 12. Lifting ring; 13. Connecting bolt; 14. Central reinforcing rib; 15. Baffle; 16. Clip block; 17. Custom rigid plate. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-6 A concrete expansion joint support and fixing device suitable for confined spaces includes an outer template 1 adapted to the size of the load-bearing wall panel and an inner template 2 with a height lower than the outer template 1. The outer template 1 has several horizontal outer fixing crossbars 3 on its side, and the inner template 2 has several horizontal inner fixing crossbars 4 adapted to the outer fixing crossbars 3 on its side. Several through-wall threaded rods 6 pass through the inner fixing crossbars 4. Several threaded holes 5 adapted to the through-wall threaded rods 6 are opened on the outer fixing crossbars 3. The through-wall threaded rods 6 pass through the inner fixing crossbars 4, the inner template 2 and the outer template 1 and are threadedly connected to the threaded holes 5. A locking nut 7 that abuts against the inner fixing crossbar 4 is threaded to the side of the through-wall threaded rod 6 away from the outer template 1. End plates 8 are provided on both sides between the facing sides of the outer template 1 and the inner template 2.

[0029] Specifically, when it is necessary to support and reinforce the wall panels of the building expansion joint, the inner formwork 2 is pre-erected inside the working floor, and the outer fixed crossbar 3 is welded to the outside of the outer formwork 1. The threaded hole 5 is aligned with the holes for threaded rods 6 for passing through the wall on the outer formwork 1 and the inner formwork 2. The outer formwork 1 is then hoisted to the expansion joint location using lifting equipment, and the positions of the outer formwork 1 and the inner formwork 2 are adjusted so that the holes for threaded rods 6 for passing through the wall on the outer formwork 1 and the inner formwork 2 are aligned with the position of the threaded hole 5. The end plates 8 located on both sides of the wall panel are then installed, and the plastic sleeves are then fitted onto them. The through-wall threaded rod 6 is inserted into the outer template 1 through the inner template 2. One end of the through-wall threaded rod 6 is threaded into the threaded hole 5. The plastic sleeve is located between the outer template 1 and the inner template 2. Then, the inner fixing crossbar 4 is inserted into the side of several through-wall threaded rods 6. The locking nut 7 is threaded into the side of the through-wall threaded rod 6. Locking the through-wall threaded rod 6 can lock the outer template 1 and the inner template 2, which is convenient for supporting and fixing the concrete expansion joint in a narrow space. The customized outer template 1 can be adapted to support and fix wall panels of different sizes located in the expansion joint, and has high stability.

[0030] As a technical optimization of this utility model, both the outer template 1 and the inner template 2 include several custom rigid plates 17. Two symmetrical connecting plates 9 are fixedly connected to one side of the custom rigid plates 17. Several through connecting holes 10 are opened on the connecting plates 9. Several custom rigid plates 17 are fixedly installed by fasteners passing through the through connecting holes 10.

[0031] Specifically, the custom rigid plate 17 can be made of steel plate or aluminum plate. The size of the custom rigid plate 17 can be customized to accommodate the expansion joint load-bearing wall panel. Adjacent custom rigid plates 17 are connected and fixed by fasteners through the through connection holes 10 on the connecting plate 9, which facilitates the assembly of the outer template 1 or the inner template 2.

[0032] As a technical optimization of this utility model, the upper part of the outer template 1 is provided with an anti-deformation plate 11. Several connecting bolts 13 that are threaded to the upper part of the customized rigid plate 17 are passed through the anti-deformation plate 11. Two symmetrical lifting rings 12 are fixedly connected to the upper part of the anti-deformation plate 11. The anti-deformation plate 11 is fixedly installed on the upper part of the assembled outer template 1 by the connecting bolts 13 to position the upper part of the outer template 1 and prevent the assembled outer template 1 from deforming.

[0033] As a technical optimization of this utility model, a central reinforcing rib 14 is fixedly connected to one side of the customized rigid plate 17. The central reinforcing rib 14 is located in the middle of the two connecting plates 9, thereby improving the support strength of the customized rigid plate 17.

[0034] As a technical optimization of this utility model, a baffle 15 is fixedly connected to the upper part of the anti-deformation plate 11. One side of the baffle 15 is flush with one side of the outer template 1. The baffle 15 is used to block the concrete from overflowing when pouring concrete, and to prevent the concrete from falling onto the support and fixing device, which would make it difficult to disassemble later.

[0035] As a technical optimization of this utility model, a snap-fit ​​block 16 is fixedly connected to one end of the through-wall threaded rod 6. The snap-fit ​​block 16 is polygonal and is adapted to the sleeve in the prior art, which facilitates the rotation of the through-wall threaded rod 6.

[0036] As a technical optimization of this utility model, both the threaded hole 5 and the end of the through-wall threaded rod 6 are provided with chamfers, which facilitates the insertion of the through-wall threaded rod 6 into the threaded hole 5.

[0037] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., 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.

[0038] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 according to the specific circumstances.

[0039] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 concrete expansion joint support and fixing device suitable for confined spaces, characterized in that, The system includes an outer template (1) that is adapted to the size of the load-bearing wall panel and an inner template (2) that is lower in height than the outer template (1). The outer template (1) has several horizontal outer fixed crossbars (3) on its side. The inner template (2) has several horizontal inner fixed crossbars (4) that are adapted to the outer fixed crossbars (3) on its side. Several through-wall threaded rods (6) are passed through the inner fixed crossbars (4). Several threaded holes (5) adapted to the through-wall threaded rods (6) are opened on the outer fixed crossbars (3). The through-wall threaded rods (6) pass through the inner fixed crossbars (4), the inner template (2) and the outer template (1) and are threadedly connected to the threaded holes (5). The side of the through-wall threaded rod (6) away from the outer template (1) is threadedly connected to a locking nut (7) that abuts against the inner fixed crossbar (4). End plates (8) are located on both sides between the facing sides of the outer template (1) and the inner template (2).

2. The concrete expansion joint support and fixing device suitable for confined spaces according to claim 1, characterized in that, Both the outer template (1) and the inner template (2) include several custom rigid plates (17). Two symmetrical connecting plates (9) are fixedly connected to one side of the custom rigid plate (17). Several through connecting holes (10) are opened on the connecting plate (9). Several custom rigid plates (17) are fixedly installed by fasteners through the through connecting holes (10).

3. A concrete expansion joint support and fixing device suitable for confined spaces according to claim 2, characterized in that, The upper part of the outer template (1) is provided with an anti-deformation plate (11). Several connecting bolts (13) that are threaded to the upper part of the custom rigid plate (17) are passed through the anti-deformation plate (11). Two symmetrical lifting rings (12) are fixedly connected to the upper part of the anti-deformation plate (11).

4. A concrete expansion joint support and fixing device suitable for confined spaces according to claim 2, characterized in that, A central reinforcing rib (14) is fixedly connected to one side of a custom rigid plate (17), and the central reinforcing rib (14) is located in the middle of the two connecting plates (9).

5. A concrete expansion joint support and fixing device suitable for confined spaces according to claim 3, characterized in that, A baffle (15) is fixedly connected to the upper part of the anti-deformation plate (11), and one side of the baffle (15) is flush with one side of the outer template (1).

6. A concrete expansion joint support and fixing device suitable for confined spaces according to claim 1, characterized in that, One end of the through-wall threaded rod (6) is fixedly connected to a snap-fit ​​block (16), which is polygonal in shape.

7. A concrete expansion joint support and fixing device suitable for confined spaces according to claim 1, characterized in that, Both the threaded hole (5) and the through-wall threaded rod (6) have chamfers at their ends.

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