A building formwork locking device

By designing a building formwork locking device that includes clamping and support structures, the problem of formwork that cannot be disassembled was solved, enabling the formwork to be used multiple times.

CN224351629UActive Publication Date: 2026-06-12中国(黑龙江)自由贸易试验区黑河片区建设质量安全和环境保护中心

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
中国(黑龙江)自由贸易试验区黑河片区建设质量安全和环境保护中心
Filing Date
2025-09-08
Publication Date
2026-06-12

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Abstract

This utility model relates to the technical field of formwork locking devices, and in particular to a formwork locking device, comprising a first straight plate and a second curved plate. The top of the first straight plate is fixedly connected to the bottom of the second curved plate. A clamping structure is connected to the right side of the first straight plate. A collar is connected to the outer wall of the clamping structure. Curved plates are fixedly connected to the outer walls of both the first straight plate and the clamping structure. Two formwork panels are placed vertically against the inner walls of the first and second curved plates. Then, another formwork panel is placed flat between the first and second curved plates. Next, the handle continues to rotate the first screw. The rotating first screw moves the second straight plate to the left, and the moving second straight plate moves the first curved plate to the left, so that the two vertical formwork panels clamp the flat formwork panel, ensuring the normal disassembly of the formwork locking device and enabling the formwork locking device to be used multiple times.
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Description

Technical Field

[0001] This utility model relates to the technical field of building formwork locking devices, specifically a building formwork locking device. Background Technology

[0002] The formwork locking device is a core connector in the formwork system. Its function is integral to the entire concrete pouring process, directly affecting the stability of the formwork system, the quality of concrete forming, and construction safety.

[0003] For example, in the formwork locking device with authorization announcement number "CN209429536U", a sleeve is fitted onto a stud, clamp A is fixed to one end of the stud, clamp B is fixed to the sleeve, and a nut is connected to the stud via a threaded connection. A limiting structure is provided between the stud and the sleeve to prevent the sleeve from rotating around the stud. Because the limiting structure restricts the rotation of the sleeve, the sleeve can only move along the axial direction of the stud, thereby preventing clamp B from flipping. However, in the use of the formwork locking device, the formwork needs to be inserted into the two clamps. At this time, the clamps will form a semi-enclosed shape on the side of the formwork, which will prevent the formwork from being aligned. At the same time, concrete needs to be poured into the inside of the formwork, which will bury the clamps and make them impossible to disassemble. This makes it impossible to disassemble the formwork locking device and prevents it from being used multiple times. Summary of the Invention

[0004] The purpose of this utility model is to solve the problem that the building formwork locking device cannot be disassembled, thus preventing the building formwork locking device from being used multiple times, and to propose a building formwork locking device.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] Design a building formwork locking device, including a first straight plate and a second curved plate. The top of the first straight plate is fixedly connected to the bottom of the second curved plate. A clamping structure is connected to the right side of the first straight plate. A collar is connected to the outer wall of the clamping structure. Curved plates are fixedly connected to the outer walls of both the first straight plate and the clamping structure. A support structure is connected to the front of the curved plates.

[0007] Preferably, the clamping structure includes a first screw and a second straight plate. The left side of the outer wall of the first screw is rotatably connected to the right circular opening of the first straight plate. The right side of the outer wall of the first screw is threadedly connected to the circular opening of the outer wall of the second straight plate. A handle is fixedly connected to the right side of the first screw. A crossbar is slidably connected to the circular opening of the outer wall of the second straight plate. The left side of the crossbar is fixedly connected to the right side of the first straight plate. A first curved plate is fixedly connected to the top of the second straight plate.

[0008] Preferably, the outer wall of the first screw is threadedly connected to the inner wall of the collar.

[0009] Preferably, the front of the outer wall of the second straight plate is fixedly connected to the end of the curved plate.

[0010] Preferably, the inner walls of both the second and first curved plates are fitted with building templates.

[0011] Preferably, the support structure includes a straight cylinder and a second screw, the rear end face of the straight cylinder is fixedly connected to the inner wall of the curved plate, the inner wall of the straight cylinder is threadedly connected to the outer wall of the second screw, and a circular plate is fixedly connected to the front side of the second screw.

[0012] Preferably, a straight rod is fixed to the outer wall of the circular plate.

[0013] The present invention provides a formwork locking device with the following advantages: By gripping the handle in the clamping structure and rotating the first screw, the rotating first screw moves the second straight plate to the left, and the moving second straight plate moves the first curved plate to the left, reducing the distance between the first and second curved plates. This causes two formwork panels to be vertically aligned with the inner walls of the first and second curved plates. Then, another formwork panel is placed flat between the first and second curved plates. The handle continues to rotate the first screw, which moves the second straight plate to the left, and the moving second straight plate moves the first curved plate to the left, thus pressing the two vertically aligned formwork panels against the flatly aligned formwork panel. This ensures the normal disassembly and reassembly of the formwork locking device and allows for multiple uses. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 for Figure 1 A schematic diagram showing the connection structure between the first curved plate and the building formwork.

[0016] Figure 3 for Figure 1 A schematic diagram showing the connection relationship between the first straight plate, the first screw, and the second straight plate.

[0017] Figure 4 for Figure 1 A schematic diagram showing the connection relationship between the curved plate, the straight cylinder, and the second screw;

[0018] Figure 5 for Figure 1 A schematic diagram showing the connection relationship between the second screw, the circular plate, and the straight rod.

[0019] In the diagram: 1. First straight plate, 2. Clamping structure, 201. First screw, 202. Second straight plate, 203. Handle, 204. Crossbar, 205. First curved plate, 3. Support structure, 301. Straight cylinder, 302. Second screw, 303. Circular plate, 304. Straight bar, 4. Second curved plate, 5. Curved plate, 6. Collar, 7. Building formwork. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings:

[0021] Please see Figure 1-5 In this embodiment, a building template locking device includes a first straight plate 1 and a second curved plate 4. The top of the first straight plate 1 is fixedly connected to the bottom of the second curved plate 4. A clamping structure 2 is connected to the right side of the first straight plate 1. A collar 6 is connected to the outer wall of the clamping structure 2. Curved plates 5 are fixedly connected to the outer walls of both the first straight plate 1 and the clamping structure 2. A support structure 3 is connected to the front of the curved plate 5.

[0022] The clamping structure 2 includes a first screw 201 and a second straight plate 202. The left side of the outer wall of the first screw 201 is rotatably connected to the right circular opening of the first straight plate 1. The left side of the outer wall of the first screw 201 is rotated by the bearing in the right circular opening of the first straight plate 1 under force. The right side of the outer wall of the first screw 201 is threadedly connected to the circular opening of the outer wall of the second straight plate 202. A handle 203 is fixedly connected to the right side of the first screw 201, which facilitates the rotation of the first screw 201. A crossbar 204 is slidably connected to the circular opening of the outer wall of the second straight plate 202. The left side of the crossbar 204 is fixedly connected to the right side of the first straight plate 1. A first curved plate 205 is fixedly connected to the top of the second straight plate 202. The outer wall of the first screw 201 is threadedly connected to the inner wall of the collar 6. The collar 6 is rotated left and right by the outer wall of the first screw 201 under force. The front of the outer wall of the second straight plate 202 is fixedly connected to the end of the curved plate 5.

[0023] By gripping the handle 203 in the clamping structure 2, the first screw 201 is rotated. The rotating first screw 201 moves the second straight plate 202 to the left, and the moving second straight plate 202 moves the first curved plate 205 to the left, reducing the distance between the first curved plate 205 and the second curved plate 4. Then, the two building templates are placed vertically against the inner walls of the first curved plate 205 and the second curved plate 4. Next, another building template is placed flat between the first curved plate 205 and the second curved plate 4. Then, with the help of the handle 203, the first screw 201 continues to rotate. The rotating first screw 201 moves the second straight plate 202 to the left, and the moving second straight plate 202 moves the first curved plate 205 to the left, so that the two vertical building templates press against the flat building template, ensuring the normal disassembly of the building template locking device and enabling the building template locking device to be used multiple times.

[0024] The inner walls of the second curved plate 4 and the first curved plate 205 are both fitted with building templates 7. The support structure 3 includes a straight cylinder 301 and a second screw 302. The rear end face of the straight cylinder 301 is fixedly connected to the inner wall of the curved plate 5. The inner wall of the straight cylinder 301 is threadedly connected to the outer wall of the second screw 302. The second screw 302 rotates back and forth through the inner wall of the straight cylinder 301 under force. A circular plate 303 is fixedly connected to the front side of the second screw 302. A straight rod 304 is fixedly connected to the outer wall of the circular plate 303. The straight rod 304 facilitates the rotation of the circular plate 303.

[0025] Installation of formwork locking devices:

[0026] The entire building formwork locking device is erected vertically, so that the bottom of the circular plate 303 contacts the ground. Then, the length of the building formwork is checked, and the straight rod 304 is held to rotate the circular plate 303. The rotating circular plate 303, along with the second screw 302, rotates downward through the straight cylinder 301, increasing the length of the second screw 302 and the straight cylinder 301. This, in turn, works with the curved plate 5 to adjust the height of the first straight plate 202 and the second straight plate 1.

[0027] Then, by holding handle 203 and rotating the first screw 201, the rotating first screw 201 moves the second straight plate 202 to the left, and the moving second straight plate 202 moves the first curved plate 205 to the left, reducing the distance between the first curved plate 205 and the second curved plate 4. Next, the two building templates are placed vertically against the inner walls of the first curved plate 205 and the second curved plate 4. Then, another building template is placed flat between the first curved plate 205 and the second curved plate 4. Then, by cooperating with handle 203, the first screw 201 continues to rotate, and the rotating first screw 201 moves the second straight plate 202 to the left, and the moving second straight plate 202 moves the first curved plate 205 to the left, so that the two vertical building templates press against the flat building template. Then, the collar 6 is rotated to the left by the first screw 201, so that the outer wall of the collar 6 presses against the outer wall of the second straight plate 202, thus locking it.

[0028] At this point, the other side of the two vertical building formworks is open. Then, insert another building formwork into the opening, and then install the locking device of another building formwork. The above operation is performed to make the other side of the two vertical building formworks press against each other and fix them. At this time, a square space will be formed inside the multiple building formworks. Then, concrete is poured into this space for molding.

[0029] After the concrete cools, the collar 6 is rotated outward via the first screw 201. Then, the handle 203 rotates the first screw 201 in the opposite direction, causing the second straight plate 202 to move to the right. This, in turn, moves the top first curved plate 205 to the right, detaching the first curved plate 205 from the formwork. Then, multiple formwork panels are disassembled.

[0030] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A formwork locking device for construction, comprising a first straight plate (1) and a second curved plate (4), characterized in that: The top of the first straight plate (1) is fixedly connected to the bottom of the second curved plate (4). A clamping structure (2) is connected to the right side of the first straight plate (1). A collar (6) is connected to the outer wall of the clamping structure (2). A curved plate (5) is fixedly connected to the outer wall of both the first straight plate (1) and the clamping structure (2). A support structure (3) is connected to the front of the curved plate (5).

2. The building formwork locking device according to claim 1, characterized in that: The clamping structure (2) includes a first screw (201) and a second straight plate (202). The left side of the outer wall of the first screw (201) is rotatably connected to the right circular opening of the first straight plate (1). The right side of the outer wall of the first screw (201) is threadedly connected to the circular opening of the outer wall of the second straight plate (202). A handle (203) is fixedly connected to the right side of the first screw (201). A crossbar (204) is slidably connected to the circular opening of the outer wall of the second straight plate (202). The left side of the crossbar (204) is fixedly connected to the right side of the first straight plate (1). A first bent plate (205) is fixedly connected to the top of the second straight plate (202).

3. The building formwork locking device according to claim 2, characterized in that: The outer wall of the first screw (201) is threadedly connected to the inner wall of the collar (6).

4. The building formwork locking device according to claim 2, characterized in that: The front of the outer wall of the second straight plate (202) is fixedly connected to the end of the curved plate (5).

5. The building formwork locking device according to claim 1, characterized in that: The inner walls of the second curved plate (4) and the first curved plate (205) are both fitted with building templates (7).

6. The building formwork locking device according to claim 1, characterized in that: The support structure (3) includes a straight cylinder (301) and a second screw (302). The rear end face of the straight cylinder (301) is fixedly connected to the inner wall of the curved plate (5). The inner wall of the straight cylinder (301) is threadedly connected to the outer wall of the second screw (302). A circular plate (303) is fixedly connected to the front side of the second screw (302).

7. The building formwork locking device according to claim 6, characterized in that: A straight rod (304) is fixed to the outer wall of the circular plate (303).