Device for embracing old wall in concrete joint between buildings

Abstract

The utility model belongs to the technical field of buildings, and particularly relates to an old wall embracing device for concrete joint between buildings, the old wall embracing device comprises a concrete base, formworks and a fixing mechanism, the formworks are arranged on the two opposite sides of the concrete base, and a plurality of preformed holes are formed in the formworks; the fixing mechanism comprises a plurality of main keels and fastening assemblies, protection planes are arranged on the sides, close to the formworks, of the main keels, the protection planes abut against the outer sides of the formworks, the fastening assemblies penetrate through the reserved holes to press the main keels, and the main keels clamp and fix the two formworks. The main keels are provided with the protection planes, the contact area between the main keels is increased, the local pressure is reduced, formwork deformation or damage caused by too large local stress is avoided, and extra maintenance cost possibly caused by formwork deformation and potential safety hazards in the concrete pouring period are reduced. Meanwhile, the problem that the stability and the reliability of the whole template system are affected due to the fact that the circular structure is prone to position deviation in the operation process is solved.

Description

Technical Field

[0001] The present application belongs to the field of construction engineering technology, and in particular relates to a device for embracing old walls at concrete joints between buildings. Background Art

[0002] In the construction of concrete structures of buildings, it is often necessary to build molds for pouring concrete to ensure the size and shape of the concrete after pouring. In order to effectively fix the molds and prevent deformation, displacement or leakage during construction, the use of professional fixing devices is essential.

[0003] For example, in the prior art, a Chinese invention patent for "concrete components used for concrete joints between building bodies and old wall support devices" is disclosed, with publication number CN112144887A, which specifically discloses a concrete component used for concrete joints between building bodies and old wall support devices, including a base, opposite templates are provided on both sides above the base, a leak-proof component for sealing the gap between the template and the base is provided on the side of the lower end of the template facing the base, a plurality of reserved holes are provided on the template and the base, and fastening components for fixing the template on the base are provided between the reserved holes.

[0004] However, the above invention adopts a circular vertical tube design that is in direct contact with the formwork in the design of the fastening assembly. The circular vertical tube forms a linear contact with the formwork, which significantly reduces the contact area between each other, thereby causing an increase in local pressure. The increased pressure may not only cause the formwork material to undergo irreversible deformation under the heavy pressure of concrete pouring, but may also affect the reusability of the mold and the accuracy of the overall structure, thereby increasing maintenance costs and potential construction risks. In addition, the circular vertical tube structure is prone to positional displacement during operation, further affecting the stability and reliability of the entire structural formwork system. Summary of the invention

[0005] In order to solve the above-mentioned technical problems, the present application provides a device for connecting concrete joints between buildings, comprising a concrete base, a formwork and a fixing mechanism, wherein the formwork is arranged on opposite sides of the concrete base, and the formwork is provided with a plurality of reserved holes; the fixing mechanism comprises a plurality of main keels and fastening components, a protective plane is provided on the side of the main keel close to the formwork, the protective plane abuts against the outer side of the formwork, the fastening component passes through the reserved holes to press the main keel, and the main keel clamps and fixes the two formworks.

[0006] Preferably, the main keel is in a rectangular, triangular or semicircular tubular shape, and one side of the main keel having a plane serves as the protection plane abutting against the outer side of the template.

[0007] Preferably, a protective layer is provided on the protection plane.

[0008] Preferably, the fixing mechanism further comprises a plurality of pairs of secondary keels, wherein the secondary keels are vertically abutted against a side of the main keel away from the template, and the fastening assembly passes through the reserved holes to press the secondary keels.

[0009] Preferably, a plurality of grooves matching the cross-sectional size of the main keel are provided on the side of the secondary keel abutting against the main keel.

[0010] Preferably, the plurality of grooves are arranged at equal distances.

[0011] Preferably, the fastening assembly includes a first tightening bolt, a tightening block and a nut. The tightening bolt passes through the reserved hole and passes between each pair of secondary keels and passes through the tightening block. One end of the tightening bolt passes through the tightening block and is threadedly engaged with the nut. The nut drives the tightening block to tighten the secondary keel, and the secondary keel presses the main keel. The tightening bolt tightens and fixes the two formworks arranged on opposite sides of the concrete base.

[0012] Preferably, a positioning groove is provided at the lower portion of the template, and a second tightening bolt reserved in the concrete base passes through the positioning groove and abuts against the top of the positioning groove.

[0013] Preferably, a leak-proof component for sealing the gap between the template and the concrete base is provided on the side of the lower end of the template facing the concrete base.

[0014] The technical solution adopted in this application can achieve the following beneficial effects:

[0015] By setting a protective plane on the side of the main keel close to the formwork, the protective plane is close to the outside of the formwork, significantly increasing the contact area between them, reducing local pressure, and effectively reducing the problem of local pressure concentration, thereby avoiding deformation or damage of the formwork due to excessive local force. It not only improves the durability and reuse rate of the formwork, but also enhances the accuracy of the overall concrete structure, reduces the additional maintenance costs that may be caused by formwork deformation and safety hazards during concrete pouring, and ensures the efficiency and safety of the construction process. At the same time, it solves the problem that the circular structure is prone to positional displacement during operation, which affects the stability and reliability of the entire formwork system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of this application.

[0017] Figure 2 for Figure 1 Enlarged schematic diagram of part I in the middle.

[0018] Figure 3 Schematic diagram of the three-dimensional structure of the main keel.

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the secondary keel.

[0020] Figure 5 Schematic diagram of the three-dimensional structure of the template.

[0021] Among them, there are a concrete base 1, a fastening assembly 2, a first tightening bolt 21, a nut 22, a clamping block 23, a secondary keel 3, a groove 31, a main keel 4, a protective plane 41, a protective layer 42, a template 5, a positioning groove 51, and a sealing layer 6. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thoroughly and comprehensively understood.

[0023] It should be noted that when a system is considered to be "connected" to another system, it may be directly connected to the other system or there may be an intermediate system. The terms "interior", "top", "upper", "lower", "upper", "lower" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing the specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0025] like Figures 1 to 5 As shown, the present application provides a device for concrete joints between buildings, including a concrete base 1, a template 5 and a fixing mechanism, wherein the template 5 is arranged on two opposite sides of the concrete base 1, and the template 5 is provided with a plurality of reserved holes; the fixing mechanism includes a plurality of main keels 4 and a fastening assembly 2, and a protective plane 41 is provided on the side of the main keel 4 close to the template 5, and the protective plane 41 abuts against the outer side of the template 5, and the fastening assembly 2 passes through the reserved holes to press the main keel 4, and the main keel 4 clamps and fixes the two templates 5.

[0026] Specifically, the concrete base 1 is a formed concrete structure. It is not only the result of the previous construction stage, but also lays a solid foundation for the subsequent new concrete pouring operation. The templates 5 are located on opposite sides of the concrete base 1, directly defining the outline of the newly poured concrete. The templates 5 are preset with a number of reserved holes for the fastening components 2 to penetrate, so as to tightly fix the two templates 5 together.

[0027] The main keel 4 is in direct contact with the formwork 5, and plays a role in clamping and fixing the formwork 5. A protective plane 41 is set at least on one side of the main keel 4 close to the formwork 5. The protective plane 41 is in surface contact with the formwork 5 to increase the force-bearing area, reduce the pressure per unit area, avoid damage or deformation to the formwork 5 during the tightening process, and increase the overall rigidity of the structure.

[0028] The fastening assembly 2 passes through the reserved holes on the template 5, pulls together and fixes the main keels 4 on both sides of the template 5, and the main keels 4 directly apply force to the two adjacent templates 5 in the middle, so as to achieve a tight clamping of the template 5 and effectively curb the outward tension phenomenon that may occur during the concrete pouring process. The selection of the fastening assembly 2 must consider the construction convenience, fastening strength, and adaptability to the template 5, ensuring that the template 5 system can be assembled quickly and firmly during the construction process, and is also easy to operate when removing the template.

[0029] The above technical solution adopted by the formwork 5 device for pouring concrete provided in the present application can achieve the following beneficial effects:

[0030] By setting a protective plane 41 on the side of the main keel 4 close to the formwork 5, the protective plane 41 is close to the outside of the formwork 5, which significantly increases the contact area between them, reduces the local pressure, and effectively reduces the problem of local pressure concentration, thereby avoiding deformation or damage of the formwork 5 due to excessive local force. It not only improves the durability and reuse rate of the formwork 5, but also enhances the accuracy of the overall concrete structure, reduces the additional maintenance costs that may be caused by the deformation of the formwork 5 and the safety hazards during the concrete pouring, and ensures the efficiency and safety of the construction process. At the same time, it solves the problem that the circular structure is prone to positional deviation during operation, which affects the stability and reliability of the entire formwork 5 system

[0031] In one embodiment, the main keel 4 is in the shape of a rectangle, triangle or semicircular tube, and one side of the main keel 4 has a plane as the protection plane 41 abutting against the outer side of the template 5 .

[0032] Specifically, the main keel 4, as a key component for fixing the formwork 5, needs to take into account both strength and practicality. It is usually in the shape of a tubular semicircle, triangle or rectangle, ensuring that at least one side is a protective plane 41, which can achieve a large-area contact with the formwork 5 and can effectively disperse the pressure applied to the formwork 5 to avoid the pressure being concentrated at one point or a local area, thereby preventing the formwork 5 from being deformed due to stress concentration.

[0033] Based on the above solution, a protection layer 42 is provided on the protection plane 41 .

[0034] Specifically, in order to further enhance the protection effect, a protective layer 42 is added to the side of the main keel 4 that directly contacts the template 5. The protective layer 42 adopts a layered structure with elasticity and flexibility, which is intended to absorb the impact and vibration that may be encountered during the construction process, reduce the adverse effects of these external forces on the template 5, and can adapt to the slight undulations on the surface of the template 5, achieve a close fit, significantly reduce the generation of gaps, and reduce the possible sliding between the main keel 4 and the template 5, which not only enhances the overall stability, but also optimizes the pressure distribution and improves the safety of the operation. The surface of the protective layer 42 is specially treated to enhance the wear resistance, ensuring that it can effectively resist the friction and extrusion caused by the operation of fasteners during the repeated installation and removal of the template 5, and greatly reduces the risk of scratches or dents on the template 5 due to mechanical action. In addition, the surface of the protective layer 42 is also designed with a fine anti-slip texture, which further enhances the friction between the template 5, prevents sliding, and maintains the stability of the structure. The protective layer 42 is tightly combined with the main keel 4 through a reliable connection method such as gluing, snapping or screwing, ensuring the stability of the overall structure.

[0035] In a more preferred embodiment, the fixing mechanism further includes a plurality of pairs of secondary keels 3 , wherein the secondary keels 3 are vertically abutted against a side of the main keel 4 away from the template 5 , and the fastening assembly 2 passes through the reserved holes to press the secondary keels 3 .

[0036] Specifically, the fixing mechanism also includes a plurality of pairs of secondary keels 3, each of which is vertically installed and tightly abutted against the side of the main keel 4 away from the formwork 5. This arrangement forms a stable three-dimensional support frame, which significantly enhances the stability of the entire structure. The fastening assembly 2 passes through the reserved hole to press the secondary keel 3, and the secondary keel 3 presses the formwork 5 through the main keel 4, ensuring the firmness and reliability of the connection and avoiding deformation of the formwork 5 due to uneven force. The vertical arrangement of the secondary keel 3 forms a lateral support for the formwork 5, effectively resists lateral vibration or other external forces, prevents displacement or distortion of the formwork 5, and ensures the accuracy and surface flatness when pouring concrete. The grid layout formed by the secondary keel 3 and the main keel 4 can further disperse and balance the stress caused by the upper load (such as the weight of wet concrete), avoid local overload, reduce the risk of deformation of the formwork 5, and extend the service life of the formwork 5.

[0037] The above technical solution is further optimized, and a plurality of grooves 31 matching the cross-sectional dimensions of the main keel 4 are provided on one side of the secondary keel 3 abutting against the main keel 4 .

[0038] Specifically, a plurality of grooves 31 matching the cross-sectional dimensions of the main keel 4 are provided on one side of the secondary keel 3 abutting against the main keel 4. During installation, the main keel 4 can be directly embedded in the grooves 31 preset in the secondary keel 3 to achieve precise positioning and stable docking, effectively preventing any lateral displacement of the main keel 4 that may occur during the installation process. Through the above scheme, the bolts, screws and other fastening elements conventionally used in previous installations are abandoned, the on-site construction process is simplified, and the construction progress is accelerated. Through the close engagement of the grooves 31 and the main keel 4, the connection stability between the two is significantly enhanced, ensuring the firmness and safety of the entire structure, and maintaining good structural integrity and strength even under heavy loads. In addition, on the basis of maintaining the structural integrity and strength, by providing the grooves 31 on the secondary keel 3, the weight of the secondary keel 3 is reduced, and material savings are achieved.

[0039] Based on the above embodiment, a plurality of the grooves 31 are arranged at equal intervals.

[0040] Specifically, a plurality of grooves 31 are evenly and equidistantly distributed along the length direction of the secondary keel 3. During the assembly process, the main keel 4 is positioned equidistantly using the equidistantly arranged grooves 31 of the secondary keel 3, and the main keel 4 is embedded in the equidistantly arranged grooves 31, so that the main keel 4 is evenly distributed outside the template 5, which not only ensures the uniformity of the template 5 as a whole when bearing loads, but also greatly improves the efficiency and accuracy of installation.

[0041] In one embodiment, the fastening assembly 2 includes a first tightening bolt 21, a clamping block 23 and a nut 22. The first tightening bolt 21 passes through the reserved hole and passes between each pair of the secondary keels 3 and passes through the clamping block 23. One end of the first tightening bolt 21 that passes through the clamping block 23 is threadedly engaged with the nut 22. The nut 22 drives the clamping block 23 to clamp the secondary keel 3. The secondary keel 3 clamps the main keel 4. The first tightening bolt 21 tightens and fixes the two formworks 5 arranged on opposite sides of the concrete base 1.

[0042] Specifically, the fastening assembly 2 uses the first tension bolt 21, the clamping block 23 and the nut 22 to achieve a stable connection between the secondary keels 3. In the specific implementation, each pair of secondary keels 3 is arranged on both sides of the reserved hole to ensure that the first tension bolt 21 can directly pass through the reserved hole and span the two secondary keels 3. The clamping block 23 has a through hole matching the first tension bolt 21 in the center so that the first tension bolt 21 can pass through, and the contours of its two ends fit the surface of the secondary keel 3, aiming to provide the best contact and pressure transmission. During installation, the first tension bolt 21 is inserted through the reserved hole in the template 5 to ensure that it spans the two templates 5 and spans the gap between the two secondary keels 3. Subsequently, the clamping block 23 is slid onto the first tension bolt 21 in place, and the inner edges of its two ends are tightly attached to and pressurized on the surface of the secondary keel 3 to initially form a clamping posture. Finally, the nut 22 is screwed on the outer end of the first tension bolt 21 and tightened step by step. As the nut 22 is gradually tightened, inward pressure is applied to the clamping block 23, thereby increasing the clamping force on the secondary keel 3 to ensure the firmness and stability of the connection. Through this "clamping" effect, the two secondary keels 3 are forced to approach each other and tightly engage. The fastening assembly 2 effectively improves the rigidity of the connection point of the secondary keel 3 and the stability of the overall structure through the coordinated work of the first tensioning bolt 21, the clamping block 23 and the nut 22, and can maintain a good connection state even under heavy loads or vibrations.

[0043] In one embodiment, a positioning groove 51 is provided at the lower portion of the template 5 , and a second tensioning bolt reserved in the concrete base 1 passes through the positioning groove 51 and abuts against the top of the positioning groove 51 .

[0044] Specifically, a positioning groove 51 corresponding to the number of the second tensioning bolts is provided at the portion where the template 5 contacts the concrete base 1. The positioning groove 51 penetrates the template 5 in the horizontal direction and extends 10 cm upward from the bottom of the template 5, ensuring that the second tensioning bolts reserved in the concrete base 1 can smoothly pass through the positioning groove 51 and are tightly attached to the top of the positioning groove 51. The second tensioning bolts themselves provide a certain upward supporting force for the template 5, preventing the template 5 from sagging due to its own gravity, thereby improving stability. It is worth noting that the second tensioning bolts and the first tensioning bolts use the same specifications to ensure the uniformity and reliability of the overall connection. During installation, the second tensioning bolt passes through the positioning groove 51 on the template 5 to ensure that it spans the two templates 5 and crosses the gap between the two secondary keels 3. Subsequently, the second tensioning bolts are tightened using the clamping block 23 and the nut 22, further improving the clamping force of the template 5.

[0045] In one embodiment, a leak-proof component for sealing the gap between the template 5 and the concrete foundation 1 is provided on the side of the lower end of the template 5 facing the concrete foundation 1 .

[0046] Specifically, the anti-leakage component includes a sealing layer 6, which is bonded between the template 5 and the concrete base 1. The sealing layer 6 is elastic, so that after being compressed, the sealing layer 6 can more firmly seal the gap between the template 5 and the concrete base 1, and can also seal the unevenness between the two, thereby improving the airtightness and reducing the leakage of the slurry.

[0047] The above-described embodiments only express the way of equipment layout of the present application, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent application; it should be pointed out that for ordinary technicians in this field, several adjustments and improvements can be made without departing from the concept of the present application, which all belong to the scope of protection of the present application; therefore, the scope of protection of the patent of this application should be based on the attached claims.

Claims

1. A device for connecting concrete joints between buildings, comprising a concrete base, characterized in that: Also includes: A template, the template is arranged on two opposite sides of the concrete base, and the template is provided with a plurality of reserved holes; The fixing mechanism includes a plurality of main keels and fastening components. A protection plane is provided on the side of the main keel close to the template. The protection plane abuts against the outer side of the template. The fastening components pass through the reserved holes to press the main keel. The main keel clamps and fixes the two templates.

2. The device for connecting concrete joints between buildings according to claim 1 is characterized in that: The main keel is in a rectangular, triangular or semicircular tubular shape, and one side of the main keel having a plane serves as the protection plane abutting against the outer side of the template.

3. The device for connecting concrete joints between buildings according to claim 1 is characterized in that: A protective layer is arranged on the protection plane.

4. The device for connecting concrete joints between buildings according to claim 1 is characterized in that: The fixing mechanism further comprises a plurality of pairs of secondary keels, wherein the secondary keels are vertically abutted against a side of the main keel away from the template, and the fastening assembly passes through the reserved holes to press the secondary keels.

5. The device for connecting concrete joints between buildings according to claim 4 is characterized in that: A plurality of grooves matching the cross-sectional size of the main keel are arranged on one side of the secondary keel abutting against the main keel.

6. The device for connecting concrete joints between buildings according to claim 5 is characterized in that: The plurality of grooves are arranged at equal intervals.

7. The device for connecting concrete joints between buildings according to claim 4 is characterized in that: The fastening assembly includes a first tightening bolt, a clamping block and a nut. The tightening bolt passes through the reserved hole and passes between each pair of the secondary keels and the clamping block. One end of the tightening bolt passes through the clamping block and is threadedly engaged with the nut. The nut drives the clamping block to clamp the secondary keel, and the secondary keel clamps the main keel. The tightening bolt tightens and fixes the two formworks arranged on opposite sides of the concrete base.

8. The device for connecting concrete joints between buildings according to claim 1 is characterized in that: A positioning groove is arranged at the lower part of the template, and a second tightening bolt reserved in the concrete base passes through the positioning groove and abuts against the top of the positioning groove.

9. The device for connecting concrete joints between buildings according to claim 1 is characterized in that: A leak-proof component for sealing the gap between the template and the concrete base is provided on one side of the lower end of the template facing the concrete base.

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