An angle-adjustable wall inside corner formwork keel structure

Abstract

The utility model provides a kind of angle-adjustable wall body internal corner formwork keel structure, including internal corner formwork, support frame, rotating mechanism and telescopic adjusting mechanism, wherein: two groups of support frame, overall L type corner arrangement is arranged, its back is all provided with internal corner formwork, and the two inner sides end of its corner are connected by rotating mechanism hinged connection, and the telescopic adjusting mechanism can be adjustedly connected between two outer ends.The utility model realizes angle adjustment by rotating mechanism, and the opening and closing amplitude is controlled by telescopic adjusting mechanism, which can flexibly adapt to the construction requirement of different angles, and the modular design is convenient for disassembly and maintenance, with the advantages of flexible adjustment of internal corner angle, improved adaptability of formwork system, convenient disassembly and assembly operation, reduced formwork damage and concrete surface damage.

Description

Technical Field

[0001] This utility model belongs to the field of building construction technology, and relates to a wall construction template, and more particularly to an adjustable angle wall internal corner template keel structure. Background Technology

[0002] In building construction, the formwork construction of wall inside corners has always presented numerous technical challenges. Traditional inside corner formwork typically employs a fixed-angle design, most commonly a 90-degree right-angle structure. This rigid structure proves inadequate when faced with construction requirements involving non-standard angles. In actual construction, due to the diversity of architectural designs, non-standard angle inside corner structures frequently arise, and traditional fixed-angle formwork cannot meet the construction requirements of these special angles.

[0003] Furthermore, existing corner formwork technologies suffer from difficulties in assembly and disassembly. During demolding, workers often need to use tools such as crowbars to forcibly pry the formwork, which not only easily damages the formwork itself but also harms the concrete surface, affecting the quality of the construction. Especially when constructing in confined spaces, traditional formwork, requiring a large demolding space, often fails to demold properly, severely impacting the construction progress. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an adjustable angle wall internal corner formwork keel structure to address the above-mentioned defects in the existing technology. This structure has the advantages of being able to flexibly adjust the internal corner angle, improving the adaptability of the formwork system, facilitating disassembly and assembly, and reducing damage to the formwork and concrete surface.

[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution:

[0006] An adjustable-angle wall corner formwork keel structure includes a corner formwork, a support frame, a rotation mechanism, and a telescopic adjustment mechanism, wherein:

[0007] The two sets of the support frame are arranged in an L-shaped corner, and the back of each set is provided with the inside corner template. The two inner ends of the corner are hinged together by the rotating mechanism, and the two outer ends are adjustablely connected by the telescopic adjustment mechanism.

[0008] Preferably, the internal corner template is made of plywood with a thickness of 12-21mm, and is detachably installed on the back of the support frame with bolts, and the two inner ends at the corner are connected by abutment.

[0009] Preferably, the support frame comprises a first square tube and a second square tube, wherein:

[0010] The first square tube consists of two parallel square tubes, which are welded together by several second square tubes arranged at intervals on the left and right sides, forming a square frame structure.

[0011] More preferably, the support frame further includes a third-party tube, wherein:

[0012] The third-party tubes are in several groups, with two tubes in each group, and are arranged at left and right intervals between the two first square tubes. Their outer ends are hinged to the outer ends of the telescopic adjustment mechanism through pins.

[0013] More preferably, the support frame further includes a fixing block and a connecting plate, wherein:

[0014] The fixing blocks are in two groups, each group consisting of several blocks, and are welded to the inner end walls of each support frame at left and right intervals.

[0015] There are two connecting plates, which are respectively welded to the outer end wall of each group of fixed blocks, and their outer side walls are flush with the outer side walls of the fixed blocks and the first square tube and the second square tube.

[0016] More preferably, the support frame further includes a template limiting block, wherein:

[0017] The template limiting blocks are a plurality of ones, which are respectively vertically set on the inner side wall of the outer end of the support frame and are arranged at equal intervals along its length.

[0018] The outer wall of the template limiting block protrudes from the outer wall of the support frame in a staggered arrangement and abuts against the side end of the building template.

[0019] Preferably, the first square tube, second square tube, third square tube, fixing block, connecting plate, and template limiting block on the support frame are welded together; wherein:

[0020] The first square tube, the second square tube, the third square tube, and the fixing block are made of galvanized square tubes; the template limiting block is made of channel steel.

[0021] Preferably, the rotating mechanism adopts a hinge structure, and the hinge seats at both ends are respectively detachably connected by screws and / or welded to the inner ends of the support frame.

[0022] Preferably, the telescopic adjustment mechanism includes an adjusting sleeve and a telescopic screw, wherein:

[0023] The two ends of the adjusting sleeve are respectively threaded to the telescopic screw, and the outer end of the telescopic screw is hinged to the outer end of the support frame.

[0024] Preferably, there are several telescopic adjustment mechanisms, which are arranged at equal intervals along the length of the support frame.

[0025] The present invention adopts the above technical solution and has the following technical effects compared with the prior art:

[0026] This utility model provides an adjustable-angle wall corner formwork keel structure, which mainly includes a corner formwork, a support frame, a rotating mechanism, and a telescopic adjustment mechanism. The rotating mechanism realizes angle adjustment, and the telescopic adjustment mechanism controls the opening and closing range, which can flexibly adapt to the construction needs of different angles. At the same time, the modular design facilitates disassembly and maintenance. It has the advantages of flexibly adjusting the corner angle, improving the adaptability of the formwork system, and facilitating disassembly and assembly operations, reducing formwork damage and concrete surface damage. When using this structure for demolding, the corner formwork angle is adjusted by adjusting the length of the telescopic adjustment mechanism, making it easy for the formwork to detach from the concrete surface, reducing formwork damage, lowering costs, and improving work efficiency. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of an adjustable angle wall internal corner template keel structure according to the present invention;

[0028] Figure 2 This is a cross-sectional schematic diagram of an adjustable angle wall internal corner template keel structure according to the present invention;

[0029] Figure 3 This is a schematic diagram of the adjustable angle wall internal corner template keel structure of this utility model in its usage state when the mold is closed;

[0030] Figure 4 This is a schematic diagram of the adjustable angle wall corner template keel structure of this utility model in its usage state during demolding;

[0031] The accompanying figures are labeled as follows:

[0032] 100 - Internal corner formwork; 200 - Support frame; 201 - First square tube; 202 - Second square tube; 203 - Third square tube; 204 - Fixing block; 205 - Connecting plate; 206 - Formwork limiting block; 300 - Rotation mechanism; 400 - Telescopic adjustment mechanism; 401 - Adjusting screw sleeve; 402 - Telescopic screw rod; 500 - Building formwork; 600 - Concrete. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0034] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0035] In existing technologies, traditional wall corner construction often employs fixed-angle formwork systems. These formworks are typically designed with right angles, such as 90°. Fixed formwork requires custom-made templates for non-standard angle construction needs, leading to extended construction periods and increased costs. During formwork removal, workers often need to use tools like pry bars to forcibly separate the formwork from the concrete structure. This operation easily damages the formwork edges and scratches the concrete surface, especially in confined spaces where the difficulty of formwork removal increases significantly.

[0036] To address the aforementioned issues, particularly the poor adaptability and demolding damage associated with fixed-angle formwork, researchers discovered that altering the formwork angle adjustment method could effectively resolve this contradiction. Analysis of the formwork's stress characteristics revealed that the formwork system needed to simultaneously possess angle adjustment functionality and structural stability. After numerous experimental verifications, a combination of a hinged rotating structure and a telescopic adjustment device was found to achieve both free angle adjustment and maintain structural rigidity during construction.

[0037] Therefore, in some embodiments, such as Figure 1 and Figure 2 As shown, this application proposes an adjustable-angle wall corner template keel structure, which mainly includes a corner template 100, a support frame 200, a rotating mechanism 300, and a telescopic adjustment mechanism 400. The support frame 200 is configured with two sets of L-shaped corner arrangement structures, with the corner template 100 installed on its back. The two inner ends at the corner are hinged together by the rotating mechanism 300, and the two outer ends are adjustablely telescopically connected by the telescopic adjustment mechanism 400.

[0038] The supporting frame 200 refers to the metal skeleton structure that supports the internal corner formwork 100. Specifically, it can be implemented using square tubing welded together to form a square frame structure, providing basic support for the formwork system. The rotating mechanism 300 refers to the hinge device that adjusts the frame angle, specifically using a hinge structure combined with screws. This device provides rotational freedom for the frame. The telescopic adjustment mechanism 400 refers to the adjustment device that controls the opening and closing angle of the frame, specifically using a combination of a two-way threaded sleeve and a screw. This device drives the frame to rotate around the hinge point through length changes.

[0039] Specifically, such as Figure 3 and Figure 4As shown, the two sets of square support frames 200 form a rotation fulcrum by hinged joints via an inner rotating mechanism 300. The outer telescopic adjustment mechanism 400 changes the included angle of the frames by adjusting its own length. When the inside corner angle needs to be adjusted, the operator rotates the adjusting component of the telescopic mechanism 400, causing a displacement change at the outer connection point, which in turn drives the support frame 200 to rotate synchronously around the inner hinge point. This linkage structure allows the inside corner formwork 100 to form a controllable included angle with the concrete 600 surface. During the demolding stage, the angle of the formwork is reduced by contracting the telescopic mechanism 400, allowing the inside corner formwork 100 to naturally separate from the concrete 600.

[0040] Compared to existing technologies, traditional fixed formwork requires complete disassembly or forced demolding, while this solution achieves non-destructive demolding through angle adjustment. Traditional formwork systems cannot adapt to angle changes, but the combination of the rotating mechanism 300 and the telescopic adjustment mechanism 400 used in this solution can cover various angle conditions. Traditional formwork assembly and disassembly processes easily damage building materials, while this solution avoids forced separation operations through angle adjustment.

[0041] Through the above technical solution, this application achieves the free adjustment function of the 100° angle of the internal corner formwork, solving the adaptability problem of non-standard angle construction. This structure significantly reduces the intensity of formwork assembly and disassembly operations, avoiding mechanical damage to the concrete 60° surface and the formwork body during the disassembly process. The application of the telescopic adjustment mechanism 40° enables the formwork system to complete safe assembly and disassembly operations even in confined spaces.

[0042] In some of these embodiments, such as Figure 1 and Figure 2 As shown, this application further proposes that the internal corner template 100 is made of plywood with a thickness of 12-21mm, and is detachably bolted to the back of the support frame 200, with the two inner ends at the corner being abutted together. Here, plywood refers to a composite board formed by laminating multiple layers of wood veneer with adhesive; detachable bolting means that the board and frame are securely connected by pre-drilled holes and a combination of bolts and nuts; and abutting together means that the inner end faces of the two internal corner templates 100 form a surface contact at the corner, which can be achieved by cutting a 45° bevel or setting an arc chamfer.

[0043] In some of these embodiments, such as Figure 1 and Figure 2 As shown, this application further proposes a support frame 200 including a first square tube 201 and a second square tube 202. The first square tube 201 consists of two parallel and spaced-apart tubes, which are welded together by several second square tubes 202 arranged at left and right intervals to form a square frame structure.

[0044] The first square tube 201 refers to the rectangular cross-section tube that forms the longitudinal main skeleton of the support frame. Specifically, it can be made from galvanized square tubes, such as square tubes with a cross-section of 40mm × 40mm and a wall thickness of 2mm. These tubes are arranged in parallel at intervals to form a stable longitudinal load-bearing foundation. The second square tube 202 refers to the rectangular cross-section tube that connects two first square tubes 201 laterally. It can also be made from galvanized square tubes, such as square tubes with a cross-section of 30mm × 30mm and a wall thickness of 2mm. It is welded between the upper and lower first square tubes 201 at intervals to form a grid-like support structure. The square frame structure refers to a closed frame formed by welding two first square tubes 201 and multiple second square tubes 202, which achieves uniform load transfer through a crisscrossing grid distribution.

[0045] Specifically, two first square tubes 201 are arranged in parallel at intervals to form a longitudinal support axis, and several second square tubes 202 arranged laterally are welded between the first square tubes at left-right intervals to form a grid structure with multiple rectangular units. The welding connection method ensures a rigid connection between the components, and the longitudinal and lateral loads are distributed and transferred through the grid nodes to avoid local stress concentration. The closed characteristic of the square frame structure enhances the overall bending stiffness, while providing a flat installation reference surface for the subsequent installation of the rotation mechanism and the telescopic adjustment mechanism.

[0046] Through the above technical solution, this application constructs a support frame with high rigidity and stability, which can effectively resist lateral pressure during the pouring of concrete 600 and avoid surface defects in concrete 600 caused by deformation of the internal corner formwork 100. The grid structure design reduces material usage and manufacturing costs while ensuring strength. The welded support frame 200 provides a precise installation reference for the telescopic adjustment mechanism 400, ensuring smooth execution of rotation and telescopic movements.

[0047] In some of these embodiments, such as Figure 1 and Figure 2 As shown, this application further proposes that the support frame 200 also includes a third-party tube 203. The third-party tube 203 consists of several groups of two tubes each, which are arranged at left and right intervals between the two first square tubes 201. Their outer ends are hinged to the outer ends of the telescopic adjustment mechanism 400 through pins.

[0048] The third-party tube 203 refers to the transverse support component arranged perpendicular to the first square tube 201. It can be made by cutting and welding galvanized square tubes, and its left-right spacing can form a stable support structure to distribute the force. The pin refers to the rotating component connecting the third-party tube 203 and the telescopic adjustment mechanism 400. It can be made of alloy steel cylindrical pins, and its hinged connection can provide shear support while ensuring rotational freedom.

[0049] Specifically, the two sets of first square tubes 201 are connected by third tubes 203 arranged at left and right intervals to form a double support structure. When the telescopic adjustment mechanism applies force, the third tubes 203 convert longitudinal stress into lateral support force, preventing local twisting of the support frame 200. When the pin is hinged to the outer end of the third tube 203, its cylindrical structure allows the telescopic adjustment mechanism 400 to rotate along the axis during adjustment, while the contact surface between the pin and the tube wall restricts lateral displacement, thereby ensuring the accuracy and stability of angle adjustment.

[0050] In some of these embodiments, such as Figure 1 and Figure 2 As shown, this application further proposes that the support frame 200 also includes fixing blocks 204 and connecting plates 205. The fixing blocks 204 are in two groups, each group consisting of several blocks, which are welded to the inner end walls of each support frame 200 at left and right intervals. There are two connecting plates 205, which are welded to the outer end walls of each group of fixing blocks 204 respectively, and their outer side walls are flush with the outer side walls of the fixing blocks 204, the first square tube 201, and the second square tube 202, and maintain their contact surface with the back corner template 100, thus ensuring the stability of the installation of the corner template 100.

[0051] The fixing block 204 refers to the metal block welded to the inner end wall of the support frame 200. Specifically, it can be a rectangular block cut from galvanized square tubing. Its spaced arrangement can distribute welding stress and enhance the load-bearing capacity of the frame end. The connecting plate 205 refers to the metal plate welded to the outer end face of each group of fixing blocks 204. Specifically, it can be a flat plate structure cut from channel steel. Its outer side wall is flush with the support frame assembly to form a continuous reference positioning surface.

[0052] Specifically, the fixing block 204 is fixed to the inner end wall of the support frame 200 by intermittent welding, forming multiple local reinforcement nodes to give the frame end resistance to bending. When the connecting plate 205 is welded to the outer end face of the fixing block 204, its outer side wall is flush with the outer wall of the square tube of the support frame 200, forming a continuous contact surface without steps. When the rotating mechanism 300 or the telescopic adjustment mechanism 400 is installed, the connecting surface of the connecting plate 205 is completely fitted with the external component, eliminating the installation gap caused by structural misalignment. The combined welding structure of the fixing block 204 and the connecting plate 205 in each group ensures that the torque borne by the support frame 200 during adjustment is evenly transmitted to each welding node, avoiding structural deformation caused by local stress concentration.

[0053] In some of these embodiments, such as Figure 1 and Figure 2As shown, this application further proposes that the support frame 200 also includes a template limiting block 206. There are several template limiting blocks 206, which are respectively vertically arranged on the inner side wall of the outer end of the support frame 200 and are equidistantly spaced along its length. The outer side wall of the template limiting block 206 protrudes from the outer side wall of the support frame 200 and is staggered, and is abutted or bolted to the side end of the building template 500.

[0054] The template limiting block 206 is a positioning component installed perpendicular to the support frame 200. It can be implemented as a welded or bolted metal block, and its function is to constrain the lateral displacement of the formwork 500 through multi-point contact or screw connection. The staggered arrangement refers to the outer wall of the template limiting block 206 forming a stepped protrusion relative to the outer wall of the support frame 200. This can be achieved by adjusting the installation position of the template limiting block 206. Its function is to form a lever fulcrum during inward rotation for demolding, reducing the required operating space, and simultaneously ensuring that the outer end of the support frame 200 avoids the formwork 500 during demolding.

[0055] Specifically, the template limiting blocks 206 are arranged at equal intervals along the length of the support frame 200 to form continuous limiting points, achieving precise positioning by abutting against the side end of the building template 500. During demolding, the operator shortens its length by adjusting the telescopic adjustment mechanism 400, causing the inner side of the outer end of the corner template 100 to move and reduce the included angle. At this time, the contact point between the outer wall of the staggered template limiting blocks 206 and the building template 500 forms a lever fulcrum, causing the corner template 100 to tilt and detach from the concrete 600 surface through the support frame 200. This process avoids the direct impact on the template edge caused by traditional prying methods, and at the same time reduces local deformation of the template by distributing the force at multiple points.

[0056] Furthermore, this application proposes that the first square tube 201, the second square tube 202, the third square tube 203, the fixing block 204, the connecting plate 205, and the template limiting block 206 on the supporting frame 200 are welded together. The first square tube 201, the second square tube 202, the third square tube 203, and the fixing block 204 are made of galvanized square tubes. The galvanized square tubes are cut into standardized length components and welded to form a mutually perpendicular grid-like frame structure, making each component a rigid, non-removable whole. The connecting plate 205 is made of steel plate structure, which facilitates the installation of the hinge structure. The template limiting block 206 is made of channel steel, whose cross-sectional shape can improve bending stiffness and is connected to the building formwork 500.

[0057] In some of these embodiments, such as Figure 1 and Figure 2As shown, this application further proposes that the rotating mechanism 300 adopts a hinge structure, with the hinge seats at both ends being detachably connected by screws and / or welded to the inner ends of the supporting frame 200. The hinge structure refers to a conventional rotating pair consisting of a hinge shaft and two symmetrical hinge seats, specifically implemented using heavy-duty construction hinges with stainless steel rotating shafts, and the hinge seat surface having mounting holes. This hinge structure provides a stable mechanical fulcrum for the rotational movement of the two supporting frames 200, while the detachable connection between the hinge seats and the supporting frame 200 balances load-bearing capacity and disassembly requirements.

[0058] Specifically, the two hinge seats of the hinge structure are fixed to the inner ends of the two support frames 200, forming a rotation axis. When it is necessary to adjust the angle of the internal corner template 100, the length of the telescopic adjustment mechanism 400 is adjusted to allow the support frame 200 to rotate relative to this axis. The screw connection method allows the rotating mechanism to be disassembled after construction, facilitating the separate transportation and storage of the template system; while the welded connection method provides a maintenance-free solution for construction scenarios that require maintaining a fixed angle for a long time. The coexistence of the two connection methods allows construction personnel to choose the installation mode according to project requirements.

[0059] Through the above technical solution, this application resolves the contradiction between flexibility and connection reliability during the rotational adjustment of the support frame 200. The standardized interface design of the hinge structure allows the rotating mechanism 300 to be quickly disassembled and replaced, avoiding the failure of the entire formwork system due to local damage; the parallel setting of the dual connection methods meets the differentiated requirements for node strength at different construction stages, extending the service life of the device while ensuring the free adjustment function of the internal corner formwork 100 angle.

[0060] In some of these embodiments, such as Figure 1 and Figure 2 As shown, this application further proposes a telescopic adjustment mechanism 400 including an adjusting sleeve 401 and a telescopic screw 402. The two ends of the adjusting sleeve 401 are threadedly connected to the telescopic screw 402, and the outer end of the telescopic screw 402 is hinged to the outer end of the third-party tube 203 on the support frame 200. The adjusting sleeve 401 refers to a sleeve structure with internal bidirectional threads, specifically a metal tube with reverse threads at both ends, achieving synchronous extension and retraction of the telescopic screws 402 on both sides through the bidirectional threads. The telescopic screw 402 refers to a rod-shaped component with external threads, specifically a steel rod with threads formed by surface rolling, achieving length adjustment by changing the screw depth.

[0061] Specifically, the reverse threads at both ends of the adjusting sleeve 401 engage with the external threads of the telescopic screw 402. When the adjusting sleeve 401 is rotated, the telescopic screws 402 on both sides undergo synchronous reverse displacement along the axial direction, thereby changing the overall length of the telescopic adjustment mechanism 400. The outer end of the telescopic screw 402 is hinged to the outer end of the support frame 200 via a pin, allowing the support frame 200 to rotate freely around the hinge point during angle adjustment. This structure achieves fine-tuning of the angle through the linear transmission characteristics of the threaded pair, while the hinged connection ensures that the relative rotation of the two support frames is unrestricted, enabling the internal corner template 100 to be adjusted non-destructively according to demolding requirements.

[0062] Compared to existing technologies, traditional corner formwork uses fixed connecting rods to restrict angle changes, requiring forced prying during demolding. This solution, however, utilizes a combination of threaded adjustment and hinges to allow for active 100° angle adjustment of the corner formwork, eliminating demolding resistance. Existing technologies often employ a single screw-pushing mechanism for adjustment, which can easily generate lateral forces leading to frame deformation. This solution, however, uses a symmetrical bidirectional screw structure, ensuring balanced force on both sides and preventing frame displacement.

[0063] Through the above technical solution, this application achieves stepless adjustment of the angle of the internal corner formwork 100, allowing the internal corner formwork 100 to naturally separate from the concrete 600 surface, avoiding damage to the internal corner formwork 100 and the concrete 600 caused by prying operations. During the adjustment process, the supporting frame 200 is subjected to uniform force, preventing frame deformation caused by local stress concentration, and effectively extending the service life of the keel structure.

[0064] As a preferred embodiment, such as Figure 1 As shown, this application further proposes several telescopic adjustment mechanisms 400, which are arranged at equal intervals along the length of the support frame 200. These multiple equidistant telescopic adjustment mechanisms 400 form continuous support adjustment points in the longitudinal direction of the frame. When angle adjustment is performed, each telescopic adjustment mechanism 400 synchronously generates displacement, making the deformation gradient on both sides of the support frame 200 more uniform. This multi-point synchronous adjustment mechanism effectively disperses the concentrated stress generated by traditional single-point adjustment, preventing the support frame 200 from undergoing plastic deformation due to excessive local stress. During demolding, the synergistic effect of the equidistantly arranged support frames 200 ensures a uniform separation trend between the internal corner formwork 100 and the concrete 600, eliminating the risk of damage to the concrete 600 caused by unilateral prying.

[0065] Through the above technical solution, this application achieves uniform force transmission of the frame during the angle adjustment of the internal corner formwork 100, effectively suppressing surface indentations of the concrete 600 caused by local deformation of the internal corner formwork 100. The synchronous control mechanism of multiple adjustment points ensures the consistency of the separation action between the internal corner formwork 100 and the concrete 600 contact surface, avoiding concrete 600 chipping caused by misaligned demolding, and maintaining stable demolding operation even in confined spaces.

[0066] Combination Figures 1 to 4 As shown, the adjustable angle wall corner formwork keel structure provided in this application realizes the angle adjustment of the two corner formworks 100 through the telescopic adjustment mechanism 400. That is, by adjusting the length of the telescopic adjustment mechanism 400, the opening and closing range of the two corner formworks 100 is controlled, so that the corner formwork 100 is easily removed from the concrete 600 surface, reducing damage to the corner formwork 100, lowering costs, improving work efficiency, and flexibly adapting to construction needs at different angles.

[0067] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0068] Secondly, the accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0069] Finally, the above description is only a preferred embodiment of the present utility model and is 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. An adjustable-angle wall internal corner formwork keel structure, characterized in that, It includes a corner template (100), a support frame (200), a rotating mechanism (300), and a telescopic adjustment mechanism (400), wherein: The two sets of the support frame (200) are arranged in an L-shaped corner, and the back of each set is provided with the inside corner template (100). The two inner ends of the corner are hinged together by the rotating mechanism (300), and the two outer ends are adjustablely connected by the telescopic adjustment mechanism (400).

2. The adjustable angle wall corner template keel structure according to claim 1, characterized in that, The internal corner template (100) is made of plywood with a thickness of 12-21mm. It is detachably installed on the back of the support frame (200) with bolts, and the two inner ends at the corner are connected by abutment.

3. The adjustable angle wall corner template keel structure according to claim 1, characterized in that, The supporting frame (200) includes a first square tube (201) and a second square tube (202), wherein: The first square tube (201) consists of two parallel and spaced-apart tubes, which are welded together by several second square tubes (202) arranged at left and right intervals to form a square frame structure.

4. The adjustable angle wall internal corner template keel structure according to claim 3, characterized in that, The support frame (200) also includes a third-party pipe (203), wherein: The third-party tube (203) consists of several groups of two tubes each, which are arranged at left and right intervals between the two first square tubes (201). Their outer ends are hinged to the outer ends of the telescopic adjustment mechanism (400) via pins.

5. The adjustable angle wall corner template keel structure according to claim 3, characterized in that, The support frame (200) further includes a fixing block (204) and a connecting plate (205), wherein: The fixing blocks (204) are in two groups, each group consisting of several blocks, and are welded to the inner end walls of each support frame (200) at left and right intervals. There are two connecting plates (205), which are respectively welded to the outer end wall of each set of fixing blocks (204), and their outer side walls are flush with the outer side walls of the fixing blocks (204), the first square tube (201), and the second square tube (202).

6. The adjustable angle wall internal corner formwork keel structure according to claim 3, characterized in that, The support frame (200) further includes a template limiting block (206), wherein: The template limiting blocks (206) are a plurality of ones, which are respectively vertically set on the inner sidewall of the outer end of the support frame (200) and are arranged at equal intervals along its length. The outer wall of the template limiting block (206) protrudes from the outer wall of the support frame (200) in a staggered arrangement and abuts against the side end of the building template (500).

7. The adjustable angle wall internal corner formwork keel structure according to claim 3, characterized in that, The first square tube (201), the second square tube (202), the third square tube (203), the fixing block (204), the connecting plate (205), and the template limiting block (206) on the supporting frame (200) are welded together; wherein: The first square tube (201), the second square tube (202), the third square tube (203) and the fixing block (204) are made of galvanized square tubes; the template limiting block (206) is made of channel steel.

8. The adjustable angle wall internal corner formwork keel structure according to claim 1, characterized in that, The rotating mechanism (300) adopts a hinge structure, and the hinge seats at both ends are respectively connected to the inner ends of the support frame (200) by screws and / or welding.

9. The adjustable angle wall corner template keel structure according to claim 1, characterized in that, The telescopic adjustment mechanism (400) includes an adjusting sleeve (401) and a telescopic screw (402), wherein: The two ends of the adjusting sleeve (401) are respectively threaded to the telescopic screw (402), and the outer end of the telescopic screw (402) is hinged to the outer end of the support frame (200).

10. The adjustable angle wall internal corner template keel structure according to claim 1, characterized in that, The telescopic adjustment mechanism (400) consists of several units, which are arranged at equal intervals along the length of the support frame (200).

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