Assembled canopy cast-in-place column head positioning device
By using gear meshing and linkage structure design, the problem of inconvenient baffle height adjustment of existing prefabricated canopy cast-in-place column head positioning device has been solved, enabling rapid adjustment by a single person and improving construction efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY CONSTR GROUP CO LTD
- Filing Date
- 2025-06-10
- Publication Date
- 2026-05-15
AI Technical Summary
The existing prefabricated canopy cast-in-place column head positioning device requires multiple people to cooperate when adjusting the height of the baffle, which is inconvenient to operate, wastes time, and increases the workload of workers.
The design employs a toothed plate, a fixed plate, a first gear, a linkage component, a limit component, and a fixing component. Through gear meshing and linkage structure, the baffle can be infinitely adjusted, allowing a single person to complete the height adjustment.
It enables convenient stepless adjustment of the baffle height, reducing the workload of workers and improving construction efficiency.
Smart Images

Figure CN224244454U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of canopy construction technology, specifically a prefabricated canopy cast-in-place column head positioning device. Background Technology
[0002] Prefabricated awnings are prefabricated, quickly installable sunshade or rainproof structures, typically made of lightweight materials, offering good weather resistance and aesthetics. They maintain structural integrity and safety in various harsh environments, making them an indispensable part of modern architecture.
[0003] The prior art disclosure number CN222391039U discloses a prefabricated canopy cast-in-place column head positioning device, specifically relating to the field of station canopy construction technology. It includes a support base with two side-by-side positioning components. Each positioning component includes a baffle on the top of the base, with several limiting holes for positioning the reinforcing bars. This invention, through the positioning components and the corresponding cooperation of various structures, supports the supporting plate via the base. The baffle is guided by a sliding groove to adjust its position at the height of the supporting plate, facilitating contact between the baffle and the pre-reserved reinforcing bars at different locations. This improves the convenience and versatility of the device during use. The inclusion of a pouring port and a staggered opening facilitates the avoidance of interference between the pouring area and the base during installation, while also facilitating transportation and installation. It boasts high construction precision, guaranteed construction period, strong durability, reusability, and significant promotional value.
[0004] With the above configuration, the existing positioning device, through the placement of positioning components and the corresponding cooperation of various structures, supports the support plate via the base, and adjusts the position of the baffle at the height of the support plate via a guide groove. This facilitates contact between the baffle and the pre-reserved reinforcing bars at different positions, improving the convenience and versatility of the device during use. However, the existing positioning device has the following drawbacks during operation:
[0005] When using the positioning device described in the prior art, if the height of the baffle needs to be adjusted, the limiting crossbar must first be pulled out, and then multiple workers need to lift the baffle together to move it. After the movement is completed, the crossbar must be inserted again to limit the baffle. Adjusting the height of the baffle is very inconvenient, requires multiple people to adjust it, wastes time, and increases the workload of workers. Utility Model Content
[0006] The present invention aims to provide a positioning device for cast-in-place column heads of prefabricated canopies, which is mainly used to solve the technical problem that the height of the adjustable baffle is very inconvenient in the existing technology and requires multiple workers to adjust it together.
[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0008] A prefabricated canopy cast-in-place column head positioning device includes a base, a support plate, and a baffle. The support plate is fixed to the upper surface of the base. An installation groove is formed in the inner wall of the support plate. A toothed plate is fixed to the inner wall of the installation groove. The baffle is located on the inner wall of the support plate and is slidably connected. Symmetrical fixing plates are fixed to the lower surface of the baffle. A movable cavity is formed in the inner wall of the fixing plate. A symmetrical through groove is formed in the outer wall of the fixing plate. The through groove communicates with the movable cavity. A symmetrical first gear is rotatably connected to the inner wall of the movable cavity. The first gear passes through the through groove and meshes with the toothed plate. A linkage component is provided between the two first gears.
[0009] The working principle and beneficial effects of this utility model:
[0010] 1. Working principle: When the height of the baffle needs to be adjusted, first adjust the limiting component so that the tooth groove on the limiting plate disengages from the second gear and the fixing component fixes the limiting plate. Then, turn the handle to drive the linkage component to operate, so that the first bevel gear rotates, the first bevel gear drives the rotating rod to rotate, the rotating rod drives the first gear to rotate, the first gear meshes with the toothed plate, so that the first gear drives the fixing plate and the baffle to move up and down, thus completing the adjustment of the baffle height.
[0011] 2. Beneficial effects:
[0012] Existing technology uses positioning components and the coordinated use of various structures. A base supports a support plate, and a baffle is guided by a sliding groove to adjust its height relative to the support plate. This facilitates contact between the baffle and pre-installed reinforcing bars at different positions, improving the convenience and versatility of the device. However, existing positioning devices require several workers to lift and move the baffle to adjust its height. The limit bar must be pulled out first, and then the baffle must be repositioned. This inconvenient and time-consuming process increases worker workload. This new solution uses a toothed plate, a fixed plate, a first gear, a linkage component, a limit component, and a fixing component. By adjusting the fixing and limit components, the toothed groove on the limit plate disengages from the second gear. Adjusting the linkage component allows the first gear to move the fixed plate and baffle vertically, enabling stepless height adjustment. Only one person is needed to adjust the baffle height, significantly reducing worker workload.
[0013] Preferably, the linkage assembly includes a rotating rod, which is fixedly connected to one side of a first gear. One end of the rotating rod is fixedly connected to a first bevel gear, and one end of the other rotating rod is fixedly connected to a second bevel gear. A symmetrical third bevel gear is rotatably connected to the inner wall of the movable cavity. The third bevel gear meshes with the first bevel gear and the second bevel gear respectively. A rotating shaft is fixedly connected to one side of the third bevel gear. The rotating shaft passes through the fixed plate and is rotatably connected to it. One end of one rotating shaft is fixedly connected to a second gear, and one end of the other rotating shaft is fixedly connected to a third gear. The second gear meshes with the third gear. A handle is fixedly connected to the side of the second gear away from the rotating shaft. A limiting assembly for restricting the rotation of the second gear is installed on the lower surface of the fixed plate.
[0014] By setting up a linkage component, turning the handle causes the second and third gears to rotate, which in turn causes the rotating shaft to rotate the second and third bevel gears, which in turn causes the first bevel gear to rotate. Then, the rotating rod causes the first gear to rotate, allowing the gear to move on the gear plate. This enables stepless adjustment of the baffle height, making adjustment more convenient.
[0015] Preferably, the limiting component includes a fixed box, a limiting plate slidably connected to the inner wall of the fixed box, a toothed groove at one end of the limiting plate that meshes with a second gear, symmetrical limiting springs fixedly connected to the inner wall of the fixed box, the other end of the limiting springs fixedly connected to the other end of the limiting plate, a pull groove on the outer wall of the fixed box, a pull plate slidably connected to the inner wall of the pull groove and fixedly connected to the limiting plate, and a movable groove on one side of the limiting plate, with a fixing component installed inside the movable groove.
[0016] By setting a limiting component, the toothed groove on the limiting plate meshes with the second gear under the action of the limiting spring, which can limit the second and third gears, and at the same time limit the linkage component and the first gear, thus improving the stability of the baffle.
[0017] Preferably, the fixing component includes a fixing spring, which is located inside the movable groove and fixedly connected. The other end of the fixing spring is fixedly connected to a fixing rod, which is slidably connected to the movable groove. The inner wall of the fixing box has a fixing groove, and a sliding plate is slidably connected to the inner wall of the fixing groove. One side of the sliding plate is fixedly connected to a push rod, which passes through the fixing box and is slidably connected to it. The fixing rod is inserted into the fixing groove.
[0018] By setting a fixing component, the limiting plate can be fixed. After the pulling plate is pulled and the limiting plate is moved, the limiting plate is fixed so that the tooth groove on the limiting plate cannot mesh with the second gear, making it convenient to rotate the second gear by the handle.
[0019] Preferably, a push plate is fixedly connected to the end of the push rod away from the slide plate, and a rubber pad is fixedly connected to the outer wall of the push plate. By setting the push plate, the push rod can be fixed and prevented from entering the interior of the fixing groove.
[0020] Preferably, symmetrical connecting rods are fixed between the two fixed plates. By setting the connecting rods, the baffle can be supported, thereby improving the stability of the baffle.
[0021] Preferably, both the pull plate and the handle have anti-slip pads fixed to their surfaces that come into contact with the fingers. This increases the friction between the fingers and the pull plate. Attached Figure Description
[0022] Figure 1 This is a structural diagram of the present utility model patent;
[0023] Figure 2 This is a front cross-sectional view of the structure of this utility model patent;
[0024] Figure 3 This is a side sectional view of the structure of this utility model patent;
[0025] Figure 4 This is a cross-sectional view of the fixing box structure of this utility model patent;
[0026] Figure 5 This utility model patent Figure 2 Structural diagram at point A in the middle.
[0027] The reference numerals in the accompanying drawings of the instruction manual include: 1. Base; 2. Support plate; 3. Baffle; 4. Mounting groove; 5. Gear plate; 6. Fixing plate; 7. Movable cavity; 8. Through groove; 9. First gear; 10. Rotating rod; 11. First bevel gear; 12. Second bevel gear; 13. Third bevel gear; 14. Rotating shaft; 15. Second gear; 16. Third gear; 17. Handle; 18. Fixing box; 19. Limiting plate; 20. Gear groove; 21. Limiting spring; 22. Pull groove; 23. Pull plate; 24. Movable groove; 25. Fixing spring; 26. Fixing rod; 27. Fixing groove; 28. Slide plate; 29. Push rod; 30. Connecting rod; 31. Push plate. Detailed Implementation
[0028] 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 protection scope of the present utility model.
[0029] like Figure 1-5As shown, this solution provides a prefabricated canopy cast-in-place column head positioning device, which includes a base 1, a support plate 2 and a baffle 3. The support plate 2 is fixed on the upper surface of the base 1. The inner wall of the support plate 2 is provided with an installation groove 4. The inner wall of the installation groove 4 is fixedly connected with a toothed plate 5. The baffle 3 is located on the inner wall of the support plate 2 and is slidably connected. The lower surface of the baffle 3 is fixedly connected with symmetrical fixing plates 6.
[0030] Symmetrical connecting rods 30 are fixed between two fixed plates 6. The inner wall of the fixed plate 6 is provided with a movable cavity 7, and the outer wall of the fixed plate 6 is provided with symmetrical through grooves 8. The through grooves 8 are connected to the movable cavity 7. The inner wall of the movable cavity 7 is rotatably connected with symmetrical first gears 9. The first gears 9 pass through the through grooves 8 and mesh with the toothed plate 5. A linkage component is provided between the two first gears 9.
[0031] In one embodiment of this utility model, the linkage component includes a rotating rod 10, which is fixedly connected to one side of the first gear 9. One end of the rotating rod 10 is fixedly connected to a first bevel gear 11, and one end of the other rotating rod 10 is fixedly connected to a second bevel gear 12. The inner wall of the movable cavity 7 is rotatably connected to a symmetrical third bevel gear 13, which meshes with the first bevel gear 11 and the second bevel gear 12 respectively. One side of the third bevel gear 13 is fixedly connected to a rotating shaft 14.
[0032] A rotating shaft 14 passes through and is rotatably connected to a fixed plate 6. One end of one rotating shaft 14 is fixedly connected to a second gear 15, and one end of the other rotating shaft 14 is fixedly connected to a third gear 16. The second gear 15 meshes with the third gear 16. A handle 17 is fixedly connected to the side of the second gear 15 away from the rotating shaft 14. A limiting component that restricts the rotation of the second gear 15 is installed on the lower surface of the fixed plate 6.
[0033] The limiting assembly includes a fixed box 18, with a limiting plate 19 slidably connected to the inner wall of the fixed box 18. One end of the limiting plate 19 has a toothed groove 20 that meshes with a second gear 15. Symmetrical limiting springs 21 are fixedly connected to the inner wall of the fixed box 18, and the other end of the limiting springs 21 is fixedly connected to the other end of the limiting plate 19. A pull groove 22 is provided on the outer wall of the fixed box 18, and a pull plate 23 is slidably connected to the inner wall of the pull groove 22. The pull plate 23 is fixedly connected to the limiting plate 19. A movable groove 24 is provided on one side of the limiting plate 19, and a fixing assembly is installed inside the movable groove 24.
[0034] In implementation, the preferred fixing component of this solution includes a fixing spring 25, which is located inside and fixedly connected to the movable groove 24. The other end of the fixing spring 25 is fixedly connected to a fixing rod 26, which is slidably connected to the movable groove 24. The inner wall of the fixing box 18 is provided with a fixing groove 27, and a sliding plate 28 is slidably connected to the inner wall of the fixing groove 27. A push rod 29 is fixedly connected to one side of the sliding plate 28, which passes through the fixing box 18 and is slidably connected to it. The fixing rod 26 is inserted into the fixing groove 27. The end of the push rod 29 away from the sliding plate 28 is fixedly connected to a push plate 31, and a rubber pad is fixedly connected to the outer wall of the push plate 31.
[0035] As can be seen from the above, the specific embodiments of this utility model are as follows:
[0036] First, place the positioning device in a suitable position. When it is necessary to adjust the height of the baffle 3, first pull the pull plate 23 so that the pull plate 23 slides inside the pull groove 22. The pull plate 23 drives the limit plate 19 to slide inside the fixed box 18, so that the limit plate 19 compresses the limit spring 21, and the tooth groove 20 on the limit plate 19 disengages from the second gear 15.
[0037] At this time, the movable groove 24 on the limiting plate 19 is aligned with the fixed groove 27 on the inner wall of the fixed box 18. Under the action of the rebound force of the fixed spring 25, the fixed rod 26 is pushed to slide inside the movable groove 24, so that the fixed rod 26 is inserted into the fixed groove 27 and abuts against the slide plate 28. The slide plate 28 pushes the push rod 29 to slide, so that the push plate 31 moves away from the fixed box 18. Then, the handle 17 is turned to drive the second gear 15 to rotate. The second gear 15 drives the third gear 16 and the rotating shaft 14 to rotate, so that the rotating shaft 14 drives the third bevel gear 13 to rotate, so that the two third bevel gears 13 drive the first bevel gear 11 and the second bevel gear 12 to rotate respectively, so that the rotating rod 10 rotates, and the rotating rod 10 drives the first gear 9 to rotate. The first gear 9 meshes with the toothed plate 5, so that the first gear 9 drives the fixed plate 6 and the baffle 3 to move up and down.
[0038] After adjusting the height of the baffle 3, by pressing the push plate 31 and the push rod 29, the push rod 29 pushes the slide plate 28 to slide inside the fixed groove 27. The slide plate 28 pushes the fixed rod 26 to disengage from the fixed groove 27 and retract it into the movable groove 24. Then, under the action of the rebound force of the limit spring 21, the limit plate 19 is pushed to slide inside the fixed box 18, so that the tooth groove 20 on the limit plate 19 meshes with the second gear 15, limiting the second gear 15 and completing the height adjustment of the baffle 3.
[0039] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A prefabricated canopy cast-in-place column head positioning device, comprising a base (1), a supporting upright plate (2), and a baffle (3), characterized in that, The support plate (2) is fixed on the upper surface of the base (1). The inner wall of the support plate (2) is provided with an installation groove (4). The inner wall of the installation groove (4) is fixed with a toothed plate (5). The baffle (3) is located on the inner wall of the support plate (2) and is slidably connected. The lower surface of the baffle (3) is fixed with a symmetrical fixing plate (6). The inner wall of the fixing plate (6) is provided with a movable cavity (7). The outer wall of the fixing plate (6) is provided with a symmetrical through groove (8). The through groove (8) communicates with the movable cavity (7). The inner wall of the movable cavity (7) is rotatably connected with a symmetrical first gear (9). The first gear (9) passes through the through groove (8) and meshes with the toothed plate (5). A linkage component is provided between the two first gears (9).
2. The prefabricated canopy cast-in-place column head positioning device according to claim 1, characterized in that: The linkage assembly includes a rotating rod (10), which is fixedly connected to one side of the first gear (9). One end of the rotating rod (10) is fixedly connected to the first bevel gear (11), and one end of the other rotating rod (10) is fixedly connected to the second bevel gear (12). The inner wall of the movable cavity (7) is rotatably connected to a symmetrical third bevel gear (13), which meshes with the first bevel gear (11) and the second bevel gear (12) respectively. A rotating shaft (14) is fixed to one side of the third bevel gear (13). The rotating shaft (14) passes through the fixed plate (6) and is rotatably connected to it. One end of one rotating shaft (14) is fixed to a second gear (15), and one end of the other rotating shaft (14) is fixed to a third gear (16). The second gear (15) meshes with the third gear (16). A handle (17) is fixed to the side of the second gear (15) away from the rotating shaft (14). A limiting component that restricts the rotation of the second gear (15) is installed on the lower surface of the fixed plate (6).
3. The prefabricated canopy cast-in-place column head positioning device according to claim 2, characterized in that: The limiting component includes a fixed box (18), a limiting plate (19) is slidably connected to the inner wall of the fixed box (18), a toothed groove (20) is provided at one end of the limiting plate (19), the toothed groove (20) meshes with the second gear (15), a symmetrical limiting spring (21) is fixedly connected to the inner wall of the fixed box (18), the other end of the limiting spring (21) is fixedly connected to the other end of the limiting plate (19), a pull groove (22) is provided on the outer wall of the fixed box (18), a pull plate (23) is slidably connected to the inner wall of the pull groove (22), the pull plate (23) is fixedly connected to the limiting plate (19), a movable groove (24) is provided on one side of the limiting plate (19), and a fixing component is installed inside the movable groove (24).
4. The prefabricated canopy cast-in-place column head positioning device according to claim 3, characterized in that: The fixing assembly includes a fixing spring (25), which is located inside the movable groove (24) and fixedly connected. The other end of the fixing spring (25) is fixedly connected to a fixing rod (26), which is slidably connected to the movable groove (24). The inner wall of the fixing box (18) is provided with a fixing groove (27), and a sliding plate (28) is slidably connected to the inner wall of the fixing groove (27). A push rod (29) is fixedly connected to one side of the sliding plate (28), which passes through the fixing box (18) and is slidably connected to it. The fixing rod (26) is inserted into the fixing groove (27).
5. The prefabricated canopy cast-in-place column head positioning device according to claim 4, characterized in that: The push rod (29) is fixed to a push plate (31) at the end away from the slide plate (28), and a rubber pad is fixed to the outer wall of the push plate (31).
6. The prefabricated canopy cast-in-place column head positioning device according to claim 1, characterized in that: Symmetrical connecting rods (30) are fixed between the two fixed plates (6).
7. The prefabricated canopy cast-in-place column head positioning device according to claim 3, characterized in that: The pull plate (23) and the handle (17) are both fixed with anti-slip pads on the side that comes into contact with the fingers.