An adjustable concrete beam formwork tool

Abstract

The application discloses an adjustable concrete bent beam formwork tool and belongs to the technical field of house building structure formwork. Four transversely moving cross beams are arranged, and the cross beams are translated from the four edges of a bottom plate. The device can be used to connect long strip wood plates. The length of the long strip wood plates is only required to be greater than the length of the required bent beam edge of a mold, so that the bent beam wood plates can be assembled. In the four long strip wood plates, the side surface of the long strip wood plate is in contact with the end of the adjacent long strip wood plate, so that a pouring bent beam with different lengths and widths can be combined. The pouring depth can be used to control the height of the pouring bent beam. The tool utilizes the long strip wood plates on site, and the length and width requirements of the long strip formwork are not high. Various long strip wood plates of leftover materials can be used, and the wood plates of the formwork are not required to be processed and assembled every time the formwork is built. The formwork tool can be used to pour bent beams with different lengths, widths and heights, and the on-site construction efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of building structure formwork technology, specifically relating to an adjustable concrete lintel formwork tool. Background Technology

[0002] Lintels are commonly used building components in construction, used to bear the self-weight of the masonry above the opening and the load transmitted from the floor beams and slabs above. Concrete lintels are divided into cast-in-place and precast types, with precast components being more common. However, doors and windows come in a wide variety of types and sizes, requiring the fabrication of formwork of various sizes during precasting, resulting in a significant consumption of wooden formwork and labor.

[0003] During construction, due to the large variety of door and window models and different sizes, it is often necessary to make wooden formwork of different sizes for the prefabrication of concrete lintels. The consumption of labor and materials is relatively large, and most of the wooden formwork is disposable. After processing, only a small portion of the wooden formwork will be reused. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide an adjustable concrete lintel formwork tool to reduce the waste of wooden formwork and adapt to the construction of lintel formwork with different lengths, widths and heights.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] The present invention includes a base plate and four positioning parts respectively disposed at the center of the four edges of the base plate. Each positioning part includes a support frame fixed to the edge of the base plate. A telescopic device is provided on the support frame. A crossbeam is slidably mounted on the output end of the telescopic device. A connecting plate for connecting with the side of a long wooden board is provided on the outside of the crossbeam. After the crossbeam is connected to the long wooden board, the position of the crossbeam and the telescopic distance of the telescopic device are adjusted so that the four long wooden boards are combined to form a casting trough-shaped template.

[0007] Furthermore, a shell-shaped body is fixedly connected to the output end of the telescopic device. Two support wheels of equal height are rotatably provided inside the shell-shaped body. The crossbeam is slidably supported on the two support wheels. A gear is also rotatably provided inside the shell-shaped body. The gear meshes with the upper side of the crossbeam. A motor is provided on the shell-shaped body, and the motor drives the gear to rotate.

[0008] Furthermore, a stop post is vertically slidably installed on the base plate near the telescopic device. The stop post extends from the top side of the base plate. When the telescopic device is retracted, the stop post blocks the outside of the fixed long wooden board.

[0009] Furthermore, the top of the blocking post is provided with a threaded head, and the base plate is provided with a threaded hole that is threadedly connected to the threaded head. The blocking post extends out from the bottom side of the base plate. When the threaded head is connected to the threaded hole, the blocking post is supported at the bottom of the base plate.

[0010] Furthermore, the base plate includes an upper plate and a lower plate stacked together, the support frame is connected to the lower plate, the threaded hole is formed on the upper plate, and a plurality of clamping screws are threadedly connected to the upper plate, the clamping screws pressing downward against the lower plate.

[0011] The beneficial effects of this invention are as follows:

[0012] This invention utilizes four laterally movable beams, which move along the four edges of a base plate. This allows for the connection of long wooden planks. The planks only need to be longer than the required edge length of the lintel to be assembled. The sides of the four long planks contact the ends of adjacent planks, allowing for the formation of lintels of varying lengths and widths. The height of the lintel can be controlled by the pouring depth. This tool effectively utilizes existing long wooden planks, eliminating the need for complex length and width measurements and allowing the use of various scraps. It also eliminates the need for processing and assembling the planks for each formwork installation. This tool can cast lintels of different lengths, widths, and heights, improving on-site construction efficiency.

[0013] Other advantages, objectives, and features of the invention will be set forth in the following description and will be apparent to those skilled in the art in some respects, or may be learned by practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0014] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the following figures are provided for illustration:

[0015] Figure 1 This is a schematic diagram of the first state according to an embodiment of the present invention;

[0016] Figure 2 for Figure 1 Sectional view at point A;

[0017] Figure 3 This is a schematic diagram of the second state in an embodiment of the present invention;

[0018] Figure 4 for Figure 3 Sectional view at point B;

[0019] Figure 5 This is a cross-sectional view of the shell-like body in an embodiment of the present invention;

[0020] The following are the markings in the attached diagram: 1. Base plate; 11. Top plate; 111. Threaded hole; 12. Bottom plate; 13. Tightening screw; 2. Positioning part; 21. Support frame; 22. Telescopic device; 23. Crossbeam; 24. Connecting plate; 25. Shell-like body; 251. Support wheel; 252. Gear; 3. Long wooden strip; 4. Stop post; 41. Threaded head. Detailed Implementation

[0021] like Figures 1-5 As shown, this invention discloses an adjustable concrete lintel formwork tool, including a base plate 1 and four positioning parts 2 respectively disposed at the center of the four edges of the base plate 1. (Refer to...) Figure 1 The positioning part 2 includes a support frame 21 fixed to the edge of the base plate 1. The support frame 21 extends outward and then upward. A telescopic device 22 is provided at the extended end of the support frame 21. The telescopic device 22 can be an electric cylinder, a hydraulic cylinder, or an electric reciprocating device. A crossbeam 23 is slidably mounted laterally at the output end of the telescopic device 22. The crossbeam 23 is horizontal with the base plate 1. Connecting plates 24 for connecting to the sides of the long wooden planks 3 are provided at both ends of the outer side of the crossbeam 23. Threaded holes 111 are opened on the connecting plates 24. When fixing the long wooden planks 3, the connecting plates 24 are connected to the long wooden planks 3 by screws. After the crossbeam 23 is connected to the long wooden planks 3, the bottom edge of the long wooden planks 3 contacts the base plate 1. By adjusting the position of the crossbeam 23 and the telescopic distance of the telescopic device 22, the four long wooden planks 3 are combined to form a casting trough-shaped template.

[0022] This template tool, by setting four horizontally movable beams 23, which are translated from the four edges of the base plate 1, allows for the connection of long wooden planks 3. The long wooden planks 3 only need to be longer than the required edge length of the lintel to be assembled. The sides of the four long wooden planks 3 contact the ends of adjacent long wooden planks 3, allowing for the formation of lintels of different lengths and widths. The height of the lintel can be controlled by the pouring depth. This tool utilizes the long wooden planks 3 on-site, where length and width requirements are not strict; various scraps of long wooden planks 3 can be used. It eliminates the need for processing and assembling the planks for each template erection. This template tool can cast lintels of different lengths, widths, and heights, improving on-site construction efficiency.

[0023] In further proposals, such as Figure 1 and Figure 5As shown, the output end of the telescopic device 22 is fixedly connected to a shell-shaped body 25. Two support wheels 251 of equal height are rotatably arranged inside the shell-shaped body 25. The crossbeam 23 is slidably supported on the two support wheels 251. The outer shell of the support wheels 251 is covered with a layer of rubber. A gear 252 is also rotatably arranged inside the shell-shaped body 25. The gear 252 is located above the two support wheels 251. The gear 252 meshes with the upper side of the crossbeam 23, so that the gear 252 and the support wheels 251 clamp the crossbeam 23. A T-shaped strip is provided on the outer edge of the crossbeam 23, and a through hole with the same cross section as the crossbeam 23 is opened on the shell-shaped body 25. Through this structure, the crossbeam 23 can be horizontally displaced on the shell-shaped body 25, and the crossbeam 23 can be moved by the rotation of the gear 252. A motor is also provided on the shell-shaped body 25, and the motor directly drives the gear 252 to rotate.

[0024] In this structure, the vertical movement and deflection of the crossbeam 23 are restricted by two support wheels 251 and a gear 252. The horizontal movement of the crossbeam 23 is ensured by the clamping of three wheel-shaped structures, so that the crossbeam 23 can control the horizontal movement of the connected long wooden board 3. The meshing of the gear 252 ensures that the crossbeam 23 does not slip during movement. Furthermore, by setting a motor, it can replace manual movement. This structure improves the smoothness of the movement of the crossbeam 23 and improves the combination efficiency of the template tool.

[0025] In further proposals, such as Figure 1 and Figure 3 As shown, a stop post 4 is vertically slidably mounted on the base plate 1 near the telescopic device 22. The stop post 4 extends from the top side of the base plate 1. When the telescopic device 22 is retracted, the stop post 4 blocks the outside of the fixed long wooden board 3. When assembling the long wooden board 3, the stop post 4 is retracted downwards, which allows the telescopic device 22 to move. The position of the stop post 4 can be slightly deviated from the extension line of the telescopic device 22 to avoid interference with the telescopic device 22.

[0026] This structure, by setting a stop post 4 that extends from the top side of the base plate 1, blocks the outside of the long wooden board 3 when the telescopic device 22 retracts. Through a point-to-line positioning method, the long wooden board 3 is temporarily clamped. At this time, the connecting plate 24 can be easily connected to the long wooden board 3. This structure can provide positioning and clamping when fixing the long wooden board 3, avoiding the outward tilt of the long wooden board 3 when connecting the long wooden board 3 and the connecting plate 24, and avoiding the need to manually fix the long wooden board 3.

[0027] In a further proposed solution, refer to Figure 1 and Figure 2The top of the blocking post 4 is provided with a threaded head 41, and the bottom plate 1 is provided with a threaded hole 111 that is threadedly connected to the threaded head 41. The blocking post 4 extends out from the bottom side of the bottom plate 1. When the threaded head 41 is connected to the threaded hole 111, the blocking post 4 is supported at the bottom of the bottom plate 1.

[0028] This structure, after clamping and connecting the long wooden strip 3, can completely move the blocking column 4 away from the telescopic device 22 by moving the blocking column 4 downward and fixing the upper end of the blocking column 4 to the base plate 1. This avoids the blocking column 4 interfering with the telescopic device 22 in the future. Furthermore, the four blocking columns 4 moving downward form the supporting feet of the base plate 1, suspending the entire lintel mold in the air. This facilitates uniform heating of all surfaces of the lintel template during the solidification process, ensuring uniform structural performance of all surfaces after the lintel is solidified.

[0029] In further proposals, such as Figure 2 , Figure 3 and Figure 4 As shown, the base plate 1 includes an upper plate 11 and a lower plate 12 that are stacked on top of each other. The upper plate 11 and the lower plate 12 are completely overlapping. The support frame 21 is connected to the lower plate 12. The threaded hole 111 connected to the stop post 4 is opened on the upper plate 11. A clamping screw 13 is threadedly connected to each of the four corners of the upper plate 11. The clamping screw 13 presses downward against the lower plate 12.

[0030] With this structure, when the screw 13 is rotated downwards to tighten, the overlapping upper plate 11 moves upwards away from the lower plate 12, the support frame 21 is connected to the lower plate 12, and the upward-moving upper plate 11 abuts against the fixed long wooden board 3. This structure can prevent uneven edges of the lintel after concrete pouring due to small gaps between the bottom plate 1 and the long wooden board 3, and also avoids problems such as water seepage through the gaps. Furthermore, the up-and-down movement of the upper plate 11 can also prevent the bottom plate 1 from causing friction on the long wooden board 3 when it is moved.

[0031] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. An adjustable concrete lintel formwork tool, characterized in that: The system includes a base plate (1) and four positioning parts (2) respectively located at the center of the four edges of the base plate (1). Each positioning part (2) includes a support frame (21) fixed to the edge of the base plate (1). A telescopic device (22) is provided on the support frame (21). A crossbeam (23) is slidably mounted on the output end of the telescopic device (22). A connecting plate (24) is provided on the outside of the crossbeam (23) for connecting with the side of the long wooden board (3). After the crossbeam (23) is connected to the long wooden board (3), the position of the crossbeam (23) and the telescopic distance of the telescopic device (22) are adjusted so that the four long wooden boards (3) are combined to form a casting trough-shaped template. A shell-like body (25) is fixed to the output end of the telescopic device (22). Two support wheels (251) of equal height are rotatably mounted inside the shell-like body (25). The crossbeam (23) is slidably supported on the two support wheels (251). 51) Inside the shell (25), a gear (252) is rotatably mounted. The gear (252) meshes with the upper side of the crossbeam (23). A motor is mounted on the shell (25), and the motor drives the gear (252) to rotate. A stop post (4) is vertically mounted on the bottom plate (1) near the telescopic device (22). The stop post (4) extends from the top side of the bottom plate (1). When the telescopic device (22) is retracted, the stop post (4) blocks the outside of the fixed long wooden board (3). The top of the stop post (4) is provided with a threaded head (41). The bottom plate (1) is provided with a threaded hole (111) that is threaded to the threaded head (41). The stop post (4) passes through the bottom side of the bottom plate (1). When the threaded head (41) is connected to the threaded hole (111), the stop post (4) is supported at the bottom of the bottom plate (1).

2. The adjustable concrete lintel formwork tool according to claim 1, characterized in that: The base plate (1) includes an upper plate (11) and a lower plate (12) stacked together. The support frame (21) is connected to the lower plate (12). The threaded hole (111) is opened on the upper plate (11). Several tightening screws (13) are threaded on the upper plate (11). The tightening screws (13) press down on the lower plate (12).

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