Aluminum beam under slab in cast-in-place formwork engineering

Abstract

This utility model discloses an aluminum beam under a slab in a cast-in-place formwork project, including an aluminum frame main rib, a connecting seat, and a connecting mechanism. The aluminum frame main rib has evenly distributed connecting seats on its lower side. The connecting mechanism includes a tube, a slot, a hollow sleeve, a connecting leg, an internally threaded cylinder, and an external thread. The tubes are respectively located in the middle of the lower surface of the connecting seat, and uprights are inserted into the tubes. The lower surface of the connecting seat has symmetrical slots on the left and right sides, and connecting legs are inserted into the slots. A hollow sleeve is fixedly connected to the lower end of every two connecting legs located at the same position. An internally threaded cylinder is rotatably connected to the hollow sleeve. External threads are provided on the upper side of the outer arc surface of the uprights. The internal threads of the internally threaded cylinders are threadedly connected to the external threads located at the same position. This aluminum beam under the slab in the cast-in-place formwork project increases the stability of the connection node between the uprights and the aluminum frame main rib.

Description

Technical Field

[0001] This utility model relates to the field of cast-in-place formwork engineering technology, specifically to an aluminum beam under a slab in cast-in-place formwork engineering. Background Technology

[0002] Cast-in-place formwork engineering is a key link in the construction of concrete structures. Its function is to provide forming molds for concrete pouring, bear the weight of concrete and construction loads, and ensure that the shape, size and position of structural components meet the design requirements. The casting forming molds need to be composed of beam frames and steel pipes. In existing technologies for cast-in-place concrete construction, wooden formwork and disc-lock scaffolding are the most common formwork systems. These systems evolved from the initial wooden formwork and steel pipes, and include components such as uprights, horizontal bars, diagonal braces, and trusses. The materials are mostly steel pipes (coupler type, disc-lock type), structural steel, or timber. Wooden formwork and disc-lock scaffolding systems are more efficient, stable, and safer, and are used to fix the position of the formwork and transfer loads. However, the above-mentioned main steel pipe ribs have some problems in actual use: the main steel pipe ribs are the biggest factor limiting the support spacing. The support spacing of conventional wooden formwork projects is 900mm x 900mm, and the strength utilization rate of the main steel pipe ribs is about 80%. The main steel pipe ribs are relatively weak. The support spacing of conventional wooden formwork projects is 900mm x 900mm, and the strength utilization rate of the disc buckle frame is about 30%. The performance of the disc buckle frame is not fully released. In addition, the uprights and beams are directly fixed by welding. Improper welding may lead to poor node stability. Therefore, we propose an aluminum beam under the slab for cast-in-place formwork engineering. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide an aluminum beam under the slab of a cast-in-place formwork project, which increases the stability of the connection node between the upright and the main rib of the aluminum frame, and can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an aluminum beam under a slab in a cast-in-place formwork project, comprising an aluminum frame main beam, a connecting seat, and a connecting mechanism; Aluminum frame main beam: It has evenly distributed connecting seats on its lower side; Connecting mechanism: It includes a plug, a slot, a hollow sleeve, a plug leg, an internal threaded cylinder, and an external thread. The plugs are respectively set in the middle of the lower surface of the connecting seat. The plugs are inserted into the interior of the plugs. The lower surface of the connecting seat has symmetrical slots on the left and right. The plug legs are inserted into the interior of the slots. The lower ends of every two plug legs located in the same position are fixedly connected to a hollow sleeve. The internal threaded cylinder is rotatably connected to the interior of the hollow sleeve. The upper side of the outer arc surface of the plug is provided with an external thread. The internal thread of the internal threaded cylinder is threadedly connected to the external thread located in the same position, which increases the stability of the connection node between the plug and the main rib of the aluminum frame.

[0005] Furthermore, the connecting mechanism also includes a lower rotating cylinder, which is fixedly connected to the lower surface of the hollow sleeve. The lower outer arc surface of the lower rotating cylinder has bolt grooves symmetrically opened at the front and back. The lower inner arc surface of the lower rotating cylinder is movably sleeved with the outer arc surface of the upright located at the same position, thereby realizing the function of connecting the main rib of the aluminum frame.

[0006] Furthermore, the connecting mechanism also includes a clearance section, which is respectively opened on the upper side of the inner arc surface of the lower rotating cylinder. The length of the clearance section is half the length of the lower rotating cylinder, so as to realize the function of avoiding the external thread.

[0007] Furthermore, the front and rear sides of the main aluminum frame are respectively provided with evenly distributed anti-slip corrugations, and the front and rear side walls of the connecting seat are in contact with the anti-slip corrugations, which facilitates manual handling of the main aluminum frame.

[0008] Furthermore, the outer arc surface of the upright is fixedly connected with a disc buckle, and a crossbar is fixedly connected inside every three horizontally adjacent disc buckles to achieve the function of lateral support.

[0009] Furthermore, the upper surface of the plug-in leg is provided with threaded grooves, and the upper side wall of the slot is also provided with threaded grooves to realize the function of bolt fixing.

[0010] Furthermore, the main rib of the aluminum frame is a H-shaped aluminum beam, which effectively prevents the main rib of the aluminum frame from overturning.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: The aluminum beam under the slab in this cast-in-place formwork project has the following advantages: 1. The main beams of this aluminum frame are made of aluminum, which reduces the weight by half compared to conventional 48 steel pipes, and can be carried by a single person, making it convenient for manual handling. 2. The section modulus of this aluminum beam is more than 8 times that of the commonly used ∅48 steel pipe, and it can withstand more loads; 3. By using this type of aluminum beam, the spacing between the disc buckle uprights can be doubled, the number of uprights and horizontal bars can be reduced, and the weight of the disc buckle frame can be reduced by more than 35%. 4. The selected aluminum beam has a height-to-width ratio of 2:1, which can effectively prevent overturning; 5. The aluminum beam has anti-slip corrugated edges on both sides for easy gripping.

[0012] 6. The aluminum beam under the slab and the upright connection part adopt a triangular support structure. When the aluminum beam under the slab applies pressure to the upright, it is also subject to the threaded locking method of the internal threaded cylinder and the external thread, which increases the stability of the connection node between the upright and the main rib of the aluminum frame. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the present invention in an explosion. Figure 3 This is an enlarged structural schematic diagram of point A of this utility model; Figure 4 This is a schematic diagram of the structure of the connector of this utility model; Figure 5 This is a schematic diagram of the hollow sleeve and plug-in leg of this utility model; Figure 6 This is a schematic diagram of the structure of the lower rotating cylinder of this utility model; Figure 7 This is a structural schematic diagram of the main cross-section of the aluminum frame of this utility model.

[0014] In the diagram: 1. Main aluminum frame, 2. Connecting seat, 3. Upright, 4. Connecting mechanism, 41. Insert cylinder, 42. Slot, 43. Hollow sleeve, 44. Insert leg, 45. Internal threaded cylinder, 46. Lower rotating cylinder, 47. Clearance section, 48. External thread, 5. Anti-slip corrugated, 6. Disc buckle, 7. Crossbar. Detailed Implementation

[0015] 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.

[0016] Please see Figure 1-7 This embodiment provides a technical solution: an aluminum beam under a slab in a cast-in-place formwork project, including an aluminum frame main beam 1, a connecting seat 2, and a connecting mechanism 4; Aluminum frame main rib 1: It has evenly distributed connecting seats 2 on its lower side. The front and rear sides of the aluminum frame main rib 1 are respectively provided with evenly distributed anti-slip corrugations 5. The front and rear side walls of the connecting seats 2 are in contact with the anti-slip corrugations 5. The aluminum frame main rib 1 is an aluminum beam main rib to reduce weight. The height-to-width ratio of the aluminum frame main rib 1 is 2:1. Connecting mechanism 4 includes inserts 41, slots 42, hollow sleeves 43, connecting legs 44, internally threaded cylinders 45, and external threads 48. Inserts 41 are respectively located in the middle of the lower surface of the connecting seat 2. A vertical rod 3 is inserted into the interior of each insert 41. Slots 42 are symmetrically arranged on the lower surface of the connecting seat 2. Connecting legs 44 are inserted into the interior of each slot 42. A hollow sleeve 43 is fixedly connected to the lower end of every two connecting legs 44 located at the same position. An internally threaded cylinder 45 is rotatably connected inside each hollow sleeve 43. External threads 48 are provided on the upper side of the outer arc surface of each vertical rod 3. The internal threads of the internally threaded cylinders 45 are threadedly connected to the external threads 48 located at the same position. Connecting mechanism 4 also includes a lower rotating... Cylinder 46 and lower rotating cylinder 46 are respectively fixedly connected to the lower surface of hollow sleeve 43. Bolt grooves are symmetrically opened on the lower side of the outer arc surface of lower rotating cylinder 46. The lower side of the inner arc surface of lower rotating cylinder 46 is movably sleeved with the outer arc surface of upright 3 located at the same position. The connecting mechanism 4 also includes a clearance section 47, which is opened on the upper side of the inner arc surface of lower rotating cylinder 46. The length of clearance section 47 is half the length of lower rotating cylinder 46. The outer arc surface of upright 3 is fixedly connected with disc buckles 6. A crossbar 7 is fixedly connected inside every three horizontally adjacent disc buckles 6. The upper surface of the insertion leg 44 is respectively opened with threaded grooves. The upper side wall of the slot 42 is also opened with threaded grooves. The main rib of the aluminum frame 1 is a H-shaped aluminum beam. The spacing between the uprights is 1800mm*1800mm, and the spacing between the crossbars 7 is 1800mm*1800mm. When using the aluminum beam under the plate, the main rib of the aluminum frame 1 can be installed at the designated work position. Then, the lower rotating cylinder 46 is inserted into the upper side of each upright 3 from top to bottom. Then, the lower rotating cylinder 46 is manually rotated so that it moves downward spirally. At this time, the disc buckle 6 can be fixed on the surface of the three uprights 3. Then, the disc buckle 6 is fixed to the crossbars 7 one by one. At this time, the three uprights 3 and the three crossbars 7 form a support frame. The uprights 3 are now in a fixed state and no longer rotate. Then, the corresponding position of the uprights 3 can be directly inserted into the insertion cylinder 41. At this time, the lower rotating cylinder 46 is twisted in the opposite direction. This causes the internal threaded cylinder 45 to rotate. The threaded relationship between the internal threaded cylinder 45 and the external thread 48 is such that when the rotating cylinder 46 rotates, the entire hollow sleeve 43 and the plug leg 44 will also rotate until the plug leg 44 is inserted into the slot 42. At this point, the external bolt can be picked up and screwed into the threaded groove. Then, as the bolt is continuously screwed in, it is screwed into the bolt groove on the lower surface of the aluminum frame main rib 1 to complete the fixation. At this point, the aluminum beam can be used normally for support operations. When pressure is applied to the aluminum frame main rib 1, the plug leg 44 will bear the pressure. At this time, due to the meshing relationship between the internal threaded cylinder 45 and the external thread 48, the stability of the connection node between the upright 3 and the aluminum frame main rib 1 is further increased.

[0017] The working principle of the aluminum beam under the slab in the cast-in-place formwork project provided by this utility model is as follows: When the aluminum beam under the slab is needed, the main rib of the aluminum frame 1 can be installed in the designated position. Then, the lower rotating cylinder 46 is inserted into the upper side of each upright 3 from top to bottom. Then, the lower rotating cylinder 46 is manually rotated so that it moves downward spirally. At this time, the disc buckle 6 can be fixed on the surface of the three uprights 3. Then, the disc buckle 6 is fixed to the crossbar 7 one by one. At this time, the three uprights 3 and the three crossbars 7 form a support frame. Then, the corresponding position of the upright 3 can be directly inserted into the insertion cylinder 41. At this time, the lower rotating cylinder 46 is twisted in the opposite direction, which drives the internal threaded cylinder 45 to rotate. The threaded relationship between the internal threaded cylinder 45 and the external thread 48 is such that when the rotating cylinder 46 rotates, the entire hollow sleeve 43 and the plug leg 44 will also rotate until the plug leg 44 is inserted into the slot 42. At this point, the external bolt can be picked up and screwed into the threaded groove. Then, as the bolt is continuously screwed in, it is screwed into the bolt groove on the lower surface of the aluminum frame main rib 1 to complete the fixation. At this point, the aluminum beam can be used normally for support operations. When pressure is applied to the aluminum frame main rib 1, the pressure will be borne by the plug leg 44. At this time, due to the meshing relationship between the internal threaded cylinder 45 and the external thread 48, the stability of the connection node between the upright 3 and the aluminum frame main rib 1 is further increased.

[0018] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A cast-in-place formwork engineering under-plate aluminum beam, characterized in that: It includes the main aluminum frame (1), the connecting seat (2), and the connecting mechanism (4); Aluminum frame main beam (1): Its lower side is provided with evenly distributed connecting seats (2); Connecting mechanism (4): It includes a tube (41), a slot (42), a hollow sleeve (43), a connecting leg (44), an internal threaded cylinder (45), and an external thread (48). The tube (41) is respectively located in the middle of the lower surface of the connecting seat (2). A vertical rod (3) is inserted into the inside of the tube (41). The lower surface of the connecting seat (2) is symmetrically provided with slots (42). The connecting legs (44) are inserted into the inside of the slots (42). A hollow sleeve (43) is fixedly connected to the lower end of every two connecting legs (44) located in the same position. An internal threaded cylinder (45) is rotatably connected inside the hollow sleeve (43). An external thread (48) is provided on the upper side of the outer arc surface of the vertical rod (3). The internal thread of the internal threaded cylinder (45) is threadedly connected to the external thread (48) located in the same position.

2. The under-plate aluminum beam of the cast-in-place formwork engineering according to claim 1, characterized in that: The connecting mechanism (4) also includes a lower rotating cylinder (46), which is fixedly connected to the lower surface of the hollow sleeve (43). The lower rotating cylinder (46) has bolt grooves symmetrically opened on the lower side of the outer arc surface. The lower side of the inner arc surface of the lower rotating cylinder (46) is movably connected to the outer arc surface of the upright (3) located at the same position.

3. The under slab aluminum beam of claim 2, wherein: The connecting mechanism (4) also includes a clearance section (47), which is respectively opened on the upper side of the inner arc surface of the lower rotating cylinder (46), and the length of the clearance section (47) is half the length of the lower rotating cylinder (46).

4. The under slab aluminum beam of claim 1, wherein: The front and rear sides of the main aluminum frame (1) are respectively provided with uniformly distributed anti-slip ripples (5), and the front and rear side walls of the connecting seat (2) are in contact with the anti-slip ripples (5).

5. The under slab aluminum beam of claim 1, wherein: The outer arc surface of the upright (3) is fixedly connected with a disc buckle (6), and a crossbar (7) is fixedly connected inside every three horizontally adjacent disc buckles (6).

6. The under slab aluminum beam of claim 1, wherein: The upper surface of the plug leg (44) is provided with threaded grooves, and the upper side wall of the slot (42) is also provided with threaded grooves.

7. The under slab aluminum beam of claim 1, wherein: The main beam of the aluminum frame (1) is a H-shaped aluminum beam.

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