An adjustable concrete deformation joint formwork setting device
By placing a measuring plate inside the expansion joint and utilizing the self-locking properties of the scale lines and screw knobs, combined with a limiting plate and positioning screws, the problem of inconvenient adjustment of the expansion joint width in existing technologies has been solved. This achieves precise adjustment of the joint width and convenient dismantling of the device, thereby improving construction efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINZHONGTIAN GRP CONSTRUCT CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-08-04
AI Technical Summary
Existing support devices make it difficult to conveniently and accurately adjust the width of the expansion joints between formwork panels when supporting them, resulting in poor ease of adjustment of the expansion joints.
An adjustable concrete expansion joint formwork support device is adopted. By placing a first measuring plate and a second measuring plate inside the expansion joint and adjusting them by comparing with the scale lines, the joint width can be accurately adjusted by combining the self-locking property of the screw and the knob. The support frame and the formwork are fixedly connected by the limiting plate and the positioning screw.
It enables convenient and precise adjustment of the expansion joint width, improves the ease of adjustment of the expansion joint, simplifies the dismantling process of the device and template, and enhances construction efficiency and convenience.
Smart Images

Figure CN224591798U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of concrete formwork support technology, specifically an adjustable concrete expansion joint formwork support device. Background Technology
[0002] Concrete formwork is a structure used to maintain the shape, size, and position of concrete components during pouring. It consists of panels, a support system, and connectors. On the construction site, support devices are required to support the concrete formwork.
[0003] Adjustable concrete expansion joint formwork support device is a device used on construction sites to support concrete formwork. It adapts to formwork of different sizes and shapes by adjusting the height and length of the support device. Its structure and principle are as follows: Support frame: The support frame is the main structural component, usually made of metal, and has a certain load-bearing capacity. Adjustment device: The height and length of the support frame are adjusted by mechanical devices such as threaded rods, manual pulleys, or hydraulic cylinders, realizing the adjustable function of the formwork support frame. Connecting components: The connecting components connect the support frame and the concrete formwork, usually using bolts, nuts, etc., to ensure a firm connection between the support frame and the formwork. Base: The base below the support frame is used to firmly support the support frame, ensuring the stability and load-bearing capacity of the support device.
[0004] Existing support devices make it difficult to conveniently and accurately adjust the width of the expansion joints between formwork during the support process, resulting in poor convenience of expansion joint adjustment; therefore, an adjustable concrete expansion joint formwork support device is proposed to address the above problems. Utility Model Content
[0005] In order to overcome the shortcomings of the existing technology and solve the problems existing in the existing technology, this utility model proposes an adjustable concrete expansion joint formwork support device.
[0006] The technical solution adopted by this utility model to solve its technical problem is an adjustable concrete expansion joint formwork support device, including a base, a sliding groove on the base, a slider assembled in the sliding groove, a sliding seat mounted on the slider, a scale line on the sliding seat, a first measuring plate fixedly mounted on the sliding seat by a fixing block, a first moving groove on the sliding seat, a first moving block assembled in the first moving groove, a second measuring plate mounted on the first moving block by a fixing block, a first screw rotatably mounted on the inner wall of the first moving groove, a first knob mounted on one end of the first screw, and a formwork placed on one side of the base. The structure includes a panel, a support structure, and a connecting structure. An expansion joint is formed between two templates. The first and second measuring plates are placed within the expansion joint. By placing the first and second measuring plates within the expansion joint and referring to the scale lines, the second measuring plate is moved to the required gap width value. At this point, the distance between the first and second measuring plates matches the gap width value. Then, the support frame moves the right-side template held on it slightly to the left horizontally until the first and second measuring plates are in contact with the side walls of the two templates, achieving precise adjustment of the gap width. This structure allows for convenient and precise adjustment of the expansion joint width, improving the ease of adjustment.
[0007] Preferably, the base is equipped with two support components. Each support component includes a second movable groove, a second screw rotatably mounted on the inner wall of the second movable groove, a second knob mounted on one end of the second screw, a second movable block assembled within the second movable groove, a movable plate mounted on the second movable block, a third movable groove formed on the movable plate, a third screw rotatably mounted on the inner wall of the third movable groove, a third knob mounted on one end of the third screw, a third movable block assembled within the third movable groove, a support frame mounted on the third movable block, and two limiting plates mounted on the support frame. The limiting plates have... The device has multiple threaded holes, each fitted with a positioning screw. A movable plate moves the support frame horizontally left and right, aligning the two support frames with the two template connection structures. Then, a third movable block moves the support frame horizontally back and forth, moving the two limiting plates on the support frame to the sides of the connection structure. After that, the positioning screws on the two limiting plates are rotated, and the multiple positioning screws clamp and fix the connection structure, achieving a fixed connection between the support frame and the template. After the concrete is poured, the positioning screws are loosened, and the entire device is moved, allowing for dismantling and improving the ease of dismantling the device and template.
[0008] The advantages of this utility model are:
[0009] 1. This utility model places a first measuring plate and a second measuring plate inside the expansion joint. Referring to the scale lines, the second measuring plate is moved to the required joint width value. At this point, the distance between the first and second measuring plates is consistent with the joint width value. Then, the support frame moves the right-side template held on it slightly to the left until the first and second measuring plates are in contact with the side walls of the two templates, thus achieving precise adjustment of the joint width. This structure allows for convenient and precise adjustment of the expansion joint width, improving the ease of adjustment.
[0010] 2. This utility model uses a movable plate to drive the support frame on it to move horizontally left and right, so that the two support frames are aligned with the two template connection structures. Then, a third movable block drives the support frame to move horizontally back and forth, so that the two limiting plates on the support frame move to both sides of the connection structure. Then, the positioning screws on the two limiting plates are rotated, and multiple positioning screws clamp and fix the connection structure, realizing the fixed connection between the support frame and the template. After the concrete is poured, the positioning screws are loosened, and then the whole device is moved, realizing the dismantling of the device, which is beneficial to improving the convenience of dismantling the device and the template. Attached Figure Description
[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0012] Figure 1 This is a first-person perspective 3D structural diagram;
[0013] Figure 2 This is a schematic diagram of the three-dimensional structure of the chute.
[0014] Figure 3 This is a schematic diagram of the three-dimensional structure of the sliding seat;
[0015] Figure 4 This is a schematic diagram of the three-dimensional structure of the base;
[0016] Figure 5 This is a schematic diagram of the three-dimensional structure of the support frame.
[0017] In the diagram: 1. Base; 2. Slide groove; 3. Slider; 4. Sliding seat; 5. Scale line; 6. First measuring plate; 7. First moving groove; 8. First moving block; 9. Second measuring plate; 10. First screw; 11. First knob; 12. Panel; 13. Support structure; 14. Connecting structure; 15. Expansion joint; 16. Second moving groove; 17. Second screw; 18. Second knob; 19. Second moving block; 20. Moving plate; 21. Third moving groove; 22. Third screw; 23. Third knob; 24. Third moving block; 25. Support frame; 26. Limiting plate; 27. Positioning screw. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0019] Please see Figure 1-3As shown, an adjustable concrete expansion joint formwork support device includes a base 1, a groove 2 on the base 1, a slider 3 installed in the groove 2, a sliding seat 4 mounted on the slider 3, scale lines 5 on the sliding seat 4, a first measuring plate 6 fixedly mounted on the sliding seat 4 via a fixing block, a first moving groove 7 on the sliding seat 4, a first moving block 8 installed in the first moving groove 7, a second measuring plate 9 mounted on the first moving block 8 via a fixing block, a first screw 10 rotatably mounted on the inner wall of the first moving groove 7, a first knob 11 mounted at one end of the first screw 10, a formwork template placed on one side of the base 1, the formwork template including a panel 12, a support structure 13, and a connecting structure 14, with an expansion joint 15 between two formwork templates, and the first measuring plate 6 and the second measuring plate 9 placed within the expansion joint 15; during operation, existing support devices have difficulty in conveniently and accurately adjusting the width of the expansion joint 15 between the formwork templates during the support process, resulting in poor convenience of expansion joint adjustment. The base 1 is placed in front of the two templates. At this time, the first measuring plate 6 and the second measuring plate 9 are placed inside the expansion joint 15, and the second measuring plate 9 is in contact with the first measuring plate 6. Then, the two support frames 25 clamp and fix the two templates, thus supporting the templates. The required gap width between the templates is usually between 20 and 100 mm. By rotating the first knob 11, the first screw 10 is driven to rotate. The first screw 10 drives the first moving block 8 on it to move horizontally. The first moving block 8 drives the second measuring plate 9 to move horizontally. The first measuring plate 6 is located at the zero mark. According to the scale line 5, the second measuring plate 9 is moved to the scale value required for the gap width. At this time, the distance between the first measuring plate 6 and the second measuring plate 9 is consistent with the gap width value, and the first measuring plate 6 and the second measuring plate 9 are located between the two templates. The first screw 10 has self-locking property. When the thread helix angle is less than the friction angle, sliding friction will cause the first screw 10 to self-lock, preventing the first moving block 8 from driving the first screw 10 to rotate in the opposite direction.
[0020] The left template remains stationary. Moving the right template causes the second screw 17 to rotate by turning the second knob 18 on the right. The second screw 17 is self-locking. The second screw 17 causes the second moving block 19 to move horizontally to the left. The second moving block 19 causes the moving plate 20 to move horizontally to the left. The moving plate 20 causes the support frame 25 on it to move horizontally to the left. The support frame 25 causes the template clamped on it to move slightly horizontally to the left. During the slight leftward movement of the right template, the side wall of the right template will first contact the second measuring plate 9 and push the second measuring plate 9 to move slightly to the left, thereby causing the entire sliding seat 4 to move slightly to the left until the first measuring plate 6 on the sliding seat 4 contacts the left template. At this point, the movement of the right template stops. At this time, the first measuring plate 6 and the second measuring plate 9 are in contact with the side walls of the two templates respectively, realizing precise adjustment of the joint width. This structure can conveniently and accurately adjust the joint width of the expansion joint, which is beneficial to improving the convenience of expansion joint adjustment.
[0021] Please see Figure 4-5 As shown, two support assemblies are installed on the base 1. Each support assembly includes a second movable groove 16, a second screw 17 rotatably mounted on the inner wall of the second movable groove 16, a second knob 18 mounted at one end of the second screw 17, a second movable block 19 assembled inside the second movable groove 16, a movable plate 20 mounted on the second movable block 19, a third movable groove 21 formed on the movable plate 20, a third screw 22 rotatably mounted on the inner wall of the third movable groove 21, a third knob 23 mounted at one end of the third screw 22, and a third movable block 24 assembled inside the third movable groove 21. A support frame 25 is installed on the 24, and two limiting plates 26 are installed on the support frame 25. Multiple threaded holes are opened on the limiting plates 26, and positioning screws 27 are fitted into the threaded holes. During operation, the existing support device makes it difficult to easily clamp and fix the template during support, and the disassembly process is cumbersome, resulting in poor ease of disassembly of the device and template. By placing the base 1 in front of the two templates, the first measuring plate 6 and the second measuring plate 9 are placed within the expansion joint 15. Then, the two second knobs 18 are rotated respectively, driving the second screw 17 to rotate. 17 has a self-locking property. The second screw 17 drives the second moving block 19 to move horizontally. The second moving block 19 drives the moving plate 20 to move horizontally. The moving plate 20 drives the support frame 25 on it to move horizontally, so that the two support frames 25 are aligned with the two template connection structures 14. Then, the third knob 23 on the two moving plates 20 is rotated, which drives the third screw 22 to rotate. The third screw 22 has a self-locking property. The third screw 22 drives the third moving block 24 to move horizontally. The third moving block 24 drives the support frame 25 to move horizontally, so that the two limiting plates 26 on the support frame 25 move. After moving to both sides of the connecting structure 14, the positioning screws 27 on the two limiting plates 26 are rotated. The multiple positioning screws 27 clamp and fix the connecting structure 14, realizing the fixed connection between the support frame 25 and the template. After adjusting the joint width of the expansion joint, concrete is poured for the support structure 13 of the template. During the concrete pouring process, the support frame 25 provides stable support for the template, which can improve construction efficiency and convenience. After the concrete pouring is completed, the positioning screws 27 are loosened, and then the device is moved as a whole, realizing the dismantling of the device, which is conducive to improving the convenience of dismantling the device and the template.
[0022] Working principle: Existing support devices struggle to conveniently and accurately adjust the width of the expansion joint 15 between templates during template support, resulting in poor adjustment convenience. By placing the base 1 in front of the two templates, the first measuring plate 6 and the second measuring plate 9 are placed within the expansion joint 15, with the second measuring plate 9 in contact with the first measuring plate 6. Then, two support frames 25 clamp and fix the two templates, achieving template support. The required width between templates is typically between 20 and 100 mm. By rotating the first knob 11, the first screw 10 rotates, causing the first moving block 8 on it to move horizontally. The first moving block 8 then moves the second measuring plate 9 horizontally. With the first measuring plate 6 at the zero mark, and referring to the scale line 5, the second measuring plate 9 is moved to the required width mark. At this point, the distance between the first measuring plate 6 and the second measuring plate 9 matches the width value, and the first measuring plate 6 and the second measuring plate 9 are located between the two templates. The first screw 10 has self-locking properties; when the thread helix angle is less than the friction angle, the sliding... Dynamic friction causes the first screw 10 to self-lock, preventing the first moving block 8 from driving the first screw 10 to rotate in the opposite direction. The left template remains stationary, while the right template is moved. By rotating the second knob 18 on the right side, the second screw 17 is rotated. The second screw 17 is self-locking. The second screw 17 drives the second moving block 19 to move horizontally to the left. The second moving block 19 drives the moving plate 20 to move horizontally to the left. The moving plate 20 drives the support frame 25 on it to move horizontally to the left. The support frame 25 causes the template clamped on it to move slightly horizontally to the left. During the process of the template on the right moving slightly to the left, the side wall of the template on the right will first contact the second measuring plate 9 and push the second measuring plate 9 to move slightly to the left, thereby driving the entire sliding seat 4 to move slightly to the left until the first measuring plate 6 on the sliding seat 4 contacts the template on the left. At this time, the movement of the template on the right stops. At this time, the first measuring plate 6 and the second measuring plate 9 are in contact with the side walls of the two templates respectively, realizing the precise adjustment of the joint width. This structure can conveniently and accurately adjust the joint width of the expansion joint, which is conducive to improving the convenience of expansion joint adjustment.Existing support devices are difficult to use for convenient clamping and fixing of formwork during support, and dismantling them is cumbersome, resulting in poor ease of removal of the device and formwork. By placing the base 1 in front of the two formwork panels, the first measuring plate 6 and the second measuring plate 9 are placed within the expansion joint 15. Then, the two second knobs 18 are rotated, driving the second screw 17 to rotate. The second screw 17 has a self-locking property. The second screw 17 drives the second moving block 19 to move horizontally, which in turn drives the moving plate 20 to move horizontally. The moving plate 20 then drives the support frame 25 on it to move horizontally, aligning the two support frames 25 with the two formwork connection structures 14. Finally, the third knob 23 on the two moving plates 20 is rotated, driving the third screw 22 to rotate. The third screw 22 has a self-locking property. The third moving block 24 moves horizontally, and the third moving block 24 moves the support frame 25 horizontally, causing the two limiting plates 26 on the support frame 25 to move to both sides of the connecting structure 14. Then, the positioning screws 27 on the two limiting plates 26 are rotated, and the multiple positioning screws 27 clamp and fix the connecting structure 14, achieving a fixed connection between the support frame 25 and the template. After adjusting the joint width, concrete is poured into the support structure 13 of the template. During the concrete pouring process, the support frame 25 provides stable support for the template, improving construction efficiency and convenience. After the concrete pouring is completed, the positioning screws 27 are loosened, and the entire device is moved, enabling dismantling of the device and improving the ease of dismantling the device and template.
[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. An adjustable concrete deformation joint formwork setting device, characterized in that: The system includes a base (1), a groove (2) on the base (1), a slider (3) in the groove (2), a sliding seat (4) on the slider (3), a scale line (5) on the sliding seat (4), a first measuring plate (6) fixedly mounted on the sliding seat (4) by a fixing block, a first moving groove (7) on the sliding seat (4), a first moving block (8) in the first moving groove (7), a second measuring plate (9) mounted on the first moving block (8) by a fixing block, a first screw (10) rotatably mounted on the inner wall of the first moving groove (7), a first knob (11) mounted on one end of the first screw (10), a template placed on one side of the base (1), the template including a panel (12), a support structure (13), a connecting structure (14), and an expansion joint (15) between the two templates, the first measuring plate (6) and the second measuring plate (9) placed in the expansion joint (15).
2. An adjustable concrete deformation joint formwork support device according to claim 1, wherein: Two support components are installed on the base (1). The support components include a second moving groove (16), a second screw (17) is rotatably installed on the inner wall of the second moving groove (16), a second knob (18) is installed at one end of the second screw (17), and a second moving block (19) is assembled in the second moving groove (16).
3. An adjustable concrete deformation joint formwork assembly according to claim 2, wherein: The second movable block (19) is equipped with a movable plate (20), and the movable plate (20) is provided with a third movable groove (21).
4. An adjustable concrete deformation joint formwork assembly according to claim 3, wherein: A third screw (22) is rotatably mounted on the inner wall of the third moving groove (21), and a third knob (23) is mounted on one end of the third screw (22).
5. An adjustable concrete deformation joint formwork assembly according to claim 3, wherein: The third moving slot (21) is equipped with a third moving block (24), and a support frame (25) is installed on the third moving block (24).
6. An adjustable concrete deformation joint formwork assembly according to claim 5, wherein: Two limiting plates (26) are installed on the support frame (25). The limiting plates (26) have multiple threaded holes, and positioning screws (27) are installed in the threaded holes.