Prefabricated laminated slab

Abstract

The utility model discloses a prefabricated laminated slab, relates to the technical field of laminated slabs, and aims to solve the problems that when the prefabricated laminated slab is hoisted, hoisting operation is generally carried out by virtue of exposed reinforcing steel bars of the laminated slab, but the reinforcing steel bars are easy to bend or damage during hoisting, so that the overall quality of the laminated slab is influenced. Comprising a plate body and a plurality of main steel bars arranged in the plate body, and a connecting table is arranged on the upper surface of the plate body. When the plate body needs to be moved, a worker can screw the threaded column on the connecting table into the threaded groove in the plate body, then the worker can insert the inserting rod on the lifting rod into the inserting groove in the connecting table, and finally the worker can lift the plate body through the lifting ring on the lifting rod by using a crane. Or the lifting rod is shoveled by a forklift to move the plate body, so that the damage to the exposed main reinforcing steel bars on the plate body is reduced, and the plate body is firmer during use.

Description

Technical Field

[0001] This utility model relates to the field of composite slabs, and in particular to a prefabricated composite slab. Background Technology

[0002] With the acceleration of urbanization, efficient and environmentally friendly building models have become a development trend. Precast components are increasingly widely used in construction projects due to their high production efficiency, stable quality, and low environmental pollution. In particular, for high-rise buildings, the use of precast composite slabs can greatly shorten the construction cycle, reduce on-site operation difficulty, and improve the overall construction safety and economy.

[0003] In the process of realizing this utility model, the inventors discovered that the technology has at least the following problems: when hoisting precast composite slabs, it is usually necessary to use the exposed steel bars of the composite slabs for hoisting operations. However, during hoisting, the steel bars are easily bent or damaged, which affects the overall quality of the composite slabs. Therefore, a precast composite slab is now proposed. Utility Model Content

[0004] To address the issue that lifting precast composite slabs typically requires using the exposed reinforcing bars, which can easily bend or damage the bars during lifting, thus affecting the overall quality of the composite slab, this invention provides a precast composite slab.

[0005] This utility model provides a prefabricated composite slab, which adopts the following technical solution:

[0006] A precast composite slab includes a slab body and a plurality of main reinforcing bars disposed inside the slab body. A connecting platform is provided on the upper surface of the slab body, a threaded column is fixedly installed at the bottom of the connecting platform, a threaded groove adapted to the threaded column is opened on the top of the slab body, a first inner groove is opened inside the connecting platform, a lifting rod is provided on the inner wall of the first inner groove opened inside the connecting platform, and a lifting ring is fixedly installed on the top of the lifting rod.

[0007] A plug rod is fixedly installed at the bottom of the lifting rod. A slot adapted to the plug rod is opened inside the connecting platform. A spring is fixedly installed inside the connecting platform. A moving block is fixedly installed at one end of the spring. A limiting rod is fixedly inserted inside the moving block. A limiting groove adapted to the limiting rod is opened inside the plug rod.

[0008] By adopting the above technical solution, when it is necessary to move the slab, the workers can screw the threaded column on the connecting platform into the threaded groove on the slab. Then, the workers can insert the plug on the lifting rod into the slot on the connecting platform. Finally, the workers can use a crane to lift the slab through the lifting ring on the lifting rod, or use a forklift to scoop up the lifting rod to move the slab, thereby reducing the damage to the exposed main steel bars on the slab and making the slab more robust during use.

[0009] Optionally, four secondary reinforcing bars are fixedly installed on the outer surface of the main reinforcing bar, and the four secondary reinforcing bars are arranged symmetrically in pairs.

[0010] By adopting the above technical solution, the four symmetrically arranged secondary reinforcing bars can increase the contact area between the main reinforcing bars and the slab, making the connection between the main reinforcing bars and the slab more stable.

[0011] Optionally, the outer surface of the connecting platform is provided with a second inner groove, and one end of the limiting rod passes through the second inner groove and is fixedly connected with a pull ring.

[0012] By adopting the above technical solution, the pull ring allows workers to easily pull the limit rod to move.

[0013] Optionally, the connecting platform is internally threaded with a threaded rod, and one end of the threaded rod is rotatably connected to a pressure plate.

[0014] By adopting the above technical solution, during use, the operator can rotate the threaded rod, which can drive the pressure plate to move. The pressure plate can squeeze and fix the lifting rod, thereby further increasing the stability of the connection between the lifting rod and the connecting platform.

[0015] Optionally, sliders are fixedly installed on both sides of the movable block, and the interior of the connecting platform is provided with a sliding groove that matches the slider.

[0016] By adopting the above technical solution, the slider and the groove can limit the movement range of the moving block, and at the same time make the moving block move more smoothly.

[0017] Optionally, a handwheel is fixedly installed at the end of the threaded rod away from the pressure plate, and a hand crank handle is fixedly installed on the upper surface of the handwheel.

[0018] By adopting the above technical solution, the handwheel and hand crank can facilitate the rotation of the threaded rod by the staff.

[0019] Optionally, the end of the limiting rod away from the pull ring is provided with an upward-sloping guide angle.

[0020] By adopting the above technical solution, when installing the lifting rod, the insert rod on the lifting rod can push the limit rod to move through the guide angle, thereby enabling the lifting rod to be quickly fixed to the connecting platform.

[0021] Optionally, a rubber anti-slip pad is fixedly installed on the lower surface of the pressure plate.

[0022] By adopting the above technical solution, the rubber anti-slip pad can increase the friction between the pressure plate and the lifting rod, making the connection between the lifting rod and the connecting platform more stable.

[0023] In summary, this utility model has the following beneficial effects:

[0024] When the slab needs to be moved, the workers can screw the threaded post on the connecting platform into the threaded groove on the slab. Then, the workers can insert the rod on the lifting rod into the slot on the connecting platform. Finally, the workers can use a crane to lift the slab through the lifting ring on the lifting rod, or use a forklift to lift the lifting rod and move the slab. This reduces damage to the exposed main steel bars on the slab and makes the slab more robust during use. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0026] Figure 2 This is a frontal cross-sectional structural diagram of the present invention.

[0027] Figure 3 This is a utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Plate; 2. Main reinforcement; 3. Connecting platform; 4. Threaded column; 5. Lifting rod; 6. Lifting ring; 7. Insert rod; 8. Spring; 9. Moving block; 10. Limiting rod; 11. Secondary reinforcement; 12. Pull ring; 13. Threaded rod; 14. Pressure plate; 15. Sliding block; 16. Handwheel; 17. Guide angle; 18. Rubber anti-slip pad. Detailed Implementation

[0030] The following description, in conjunction with the embodiments of this utility model, includes appendices. Figure 1-3 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] Please refer to Figure 1 and Figure 2A precast composite slab includes a slab body 1 and a plurality of main reinforcing bars 2 disposed inside the slab body 1. Four secondary reinforcing bars 11 are fixedly installed on the outer surface of each of the main reinforcing bars 2, and the four secondary reinforcing bars 11 are arranged symmetrically in pairs. The four symmetrically arranged secondary reinforcing bars 11 can increase the contact area between the main reinforcing bars 2 and the slab body 1, making the connection between the main reinforcing bars 2 and the slab body 1 more stable.

[0032] Please refer to Figure 1 and Figure 2 The upper surface of the plate 1 is provided with four connecting platforms 3, which are located at the four corners of the upper surface of the plate 1. Threaded posts 4 are fixedly installed at the bottom of each of the four connecting platforms 3. The top of the plate 1 has threaded grooves that match the threaded posts 4. During use, workers can connect or disconnect the connecting platforms 3 using the threaded posts 4 and the threaded grooves. The interior of each connecting platform 3 has a first inner groove, and the inner wall of this groove is provided with a lifting rod 5. Two lifting rings 6 are fixedly installed at the top of the lifting rod 5, and these two rings are symmetrically arranged about the vertical center line of the lifting rod 5. When it is necessary to move the plate 1, workers can screw the threaded posts 4 on the connecting platforms 3 into the threaded grooves on the plate 1. Then, workers can use a crane and the lifting rings 6 to lift the plate 1, or use a forklift to lift the lifting rod 5 to move the plate 1.

[0033] Please refer to Figure 2 and Figure 3 The connecting platform 3 has an internal threaded connection to a threaded rod 13. One end of the threaded rod 13 is rotatably connected to a pressure plate 14. A handwheel 16 is fixedly installed at the end of the threaded rod 13 away from the pressure plate 14. A hand crank handle is fixedly installed on the upper surface of the handwheel 16. The outer surface of the hand crank handle has anti-slip grooves, which increase the friction between the operator's hand and the hand crank handle, reducing the chance of slippage. The handwheel 16 and the hand crank handle facilitate the operator's rotation of the threaded rod 13. A rubber anti-slip pad 18 is fixedly installed on the lower surface of the pressure plate 14, which increases the friction between the pressure plate 14 and the lifting rod 5, making the connection between the lifting rod 5 and the connecting platform 3 more stable. In use, the operator can rotate the handwheel 16 and the hand crank handle. The handwheel 16 drives the threaded rod 13 to rotate, which in turn drives the pressure plate 14 to move. The pressure plate 14 can press and fix the lifting rod 5, thereby increasing the stability of the connection between the lifting rod 5 and the connecting platform 3.

[0034] Please refer to Figure 2 and Figure 3The bottom of the lifting rod 5 is fixedly installed with a plug rod 7. The inside of the connecting platform 3 is provided with a slot that matches the plug rod 7. The inside of the connecting platform 3 is fixedly installed with a spring 8. One end of the spring 8 is fixedly installed with a moving block 9. The inside of the moving block 9 is fixedly provided with a limiting rod 10. The inside of the plug rod 7 is provided with a limiting groove that matches the limiting rod 10.

[0035] Please refer to Figure 2 and Figure 3 The outer surface of the connecting platform 3 has a second inner groove. One end of the limiting rod 10 passes through the second inner groove and is fixedly connected to a pull ring 12. The pull ring 12 allows the operator to easily pull the limiting rod 10 to move. Slider blocks 15 are fixedly installed on both opposite sides of the moving block 9. The interior of the connecting platform 3 has a sliding groove that matches the slider 15. The slider 15 and the sliding groove limit the movement range of the moving block 9 and make the moving block 9 move more smoothly. The end of the limiting rod 10 away from the pull ring 12 has an upward-sloping guide angle 17. When installing the lifting rod 5, the insert rod 7 on the lifting rod 5 can push the limiting rod 10 to move through the guide angle 17, so that the lifting rod 5 can be quickly fixed to the connecting platform 3. When it is necessary to remove the lifting boom 5, the operator can pull the pull ring 12. The pull ring 12 can drive the limit rod 10 to move. The limit rod 10 can drive the moving block 9 to squeeze the spring 8 and separate it from the limit groove under the cooperation of the slider 15 and the slide groove, so that the lifting boom 5 can be quickly removed.

[0036] The implementation principle of this utility model is as follows: Through the design of the plate 1, main reinforcing bar 2, connecting platform 3, threaded column 4, lifting rod 5, lifting ring 6, insertion rod 7, spring 8, moving block 9, limiting rod 10, secondary reinforcing bar 11, pull ring 12, threaded rod 13, pressure plate 14, slider 15, handwheel 16, guide angle 17, and rubber anti-slip pad 18, when the plate 1 needs to be moved, the worker can screw the threaded column 4 on the connecting platform 3 into the threaded groove on the plate 1. Then, the worker can insert the insertion rod 7 on the lifting rod 5 into the slot on the connecting platform 3. The limiting rod 10 inside the connecting platform 3 can cooperate with the spring 8 to... The limiting groove on the lifting rod 5 is used for connection and fixation, so that the connecting platform 3 and the lifting rod 5 can be quickly fixed. Then, the operator can rotate the handwheel 16 and the hand crank handle. The handwheel 16 can drive the threaded rod 13 to rotate, and the threaded rod 13 can drive the pressure plate 14 to move. The pressure plate 14 can squeeze and fix the lifting rod 5, making the lifting rod 5 more stable during use. Finally, the operator can use a crane to lift the plate 1 through the lifting ring 6 on the lifting rod 5, or use a forklift to scoop up the lifting rod 5 to move the plate 1, thereby reducing the damage to the exposed main steel bars 2 on the plate 1 and making the plate 1 more robust during use.

[0037] After hoisting or moving is completed, the worker can first rotate the handwheel 16, which will drive the threaded rod 13 to rotate. The threaded rod 13 will drive the pressure plate 14 to separate from the lifting rod 5. Then the worker can pull the pull ring 12, which will drive the limit rod 10 to move. The limit rod 10 will drive the moving block 9 to squeeze the spring 8 and separate it from the limit groove, so that the lifting rod 5 can be removed. Finally, the connecting platform 3 can be unscrewed and the threaded groove on the plate 1 can be smoothed with concrete.

[0038] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A precast composite slab, comprising a slab body (1) and a plurality of main reinforcing bars (2) disposed inside the slab body (1), characterized in that: The upper surface of the plate (1) is provided with a connecting platform (3), the bottom of the connecting platform (3) is fixedly installed with a threaded column (4), the top of the plate (1) is provided with a threaded groove that matches the threaded column (4), the inside of the connecting platform (3) is provided with a first inner groove, the inner wall of the first inner groove provided in the connecting platform (3) is provided with a lifting rod (5), and the top of the lifting rod (5) is fixedly installed with a lifting ring (6). The bottom of the lifting rod (5) is fixedly installed with a plug rod (7). The inside of the connecting platform (3) is provided with a slot that matches the plug rod (7). The inside of the connecting platform (3) is fixedly installed with a spring (8). One end of the spring (8) is fixedly installed with a moving block (9). The inside of the moving block (9) is fixedly provided with a limiting rod (10). The inside of the plug rod (7) is provided with a limiting groove that matches the limiting rod (10).

2. The precast composite slab according to claim 1, characterized in that: Four secondary steel bars (11) are fixedly installed on the outer surface of the main steel bar (2), and the four secondary steel bars (11) are arranged symmetrically in pairs.

3. A prefabricated composite slab according to claim 1, characterized in that: The outer surface of the connecting platform (3) is provided with a second inner groove, and one end of the limiting rod (10) passes through the second inner groove and is fixedly connected with a pull ring (12).

4. A prefabricated composite slab according to claim 1, characterized in that: The connecting platform (3) is internally threaded with a threaded rod (13), and one end of the threaded rod (13) is rotatably connected to a pressure plate (14).

5. A prefabricated composite slab according to claim 1, characterized in that: The movable block (9) is fixedly installed with sliders (15) on both sides, and the connecting platform (3) has a groove inside that is adapted to the sliders (15).

6. A precast composite slab according to claim 4, characterized in that: A handwheel (16) is fixedly installed at the end of the threaded rod (13) away from the pressure plate (14), and a hand crank is fixedly installed on the upper surface of the handwheel (16).

7. A prefabricated composite slab according to claim 3, characterized in that: The end of the limiting rod (10) away from the pull ring (12) has an upward-sloping guide angle (17).

8. A precast composite slab according to claim 4, characterized in that: A rubber anti-slip pad (18) is fixedly installed on the lower surface of the pressure plate (14).

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