Anti-crack high-reliability precast concrete laminated slab

By using bolts, first ring, connecting frame and second ring in the limiting device of concrete stacked plate, the problem of bending or spacing changes in the first steel bar during the lifting process is solved, and the problem of bending or spacing changes in the first steel bar during the lifting process is realized. Improve crack resistance and improvement of concrete laminated plates.

CN222140431UActive Publication Date: 2024-12-10SHANDONG HONGYUAN PREFABRICATED CONSTR CO LTD
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Patent Information

Application Number
CN202420292465.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-02-18
Publication Date
2024-12-10
Estimated Expiration
2034-02-18

AI Technical Summary

Technical Problem

During the lifting process of concrete laminated plates, the exposed first steel bars are easily bending or changing the spacing due to external forces, which affects the use effect of laminated plates.

Method used

A limiting device is designed, including bolts, a first ring, a connecting frame and a second ring. Through the cooperation of these components, the limiting position can be performed when the first steel bar is exposed, and bending or spacing caused by external force collision is avoided. Change and improve operational ease and fixation stability through operating blocks, elastic ropes and rubber sleeves.

Benefits of technology

It effectively avoids the bending or spacing of the first steel bars due to external force collision during lifting, and improves the use effect and stability of concrete laminated plates.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides an anti-crack high-reliability precast concrete laminated slab, which relates to the technical field of concrete laminated slabs and comprises a concrete slab, a plurality of first reinforcing steel bars are arranged in the concrete slab, a plurality of second reinforcing steel bars are arranged on one side of the concrete slab, and limiting devices are arranged on the surfaces of the second reinforcing steel bars. The limiting device comprises a bolt, the bolt abuts against the second reinforcing steel bar, the surface of the bolt is in threaded connection with a first circular ring, one side of the first circular ring is fixedly connected with a connecting frame, and one side of the connecting frame is fixedly connected with a plurality of second circular rings. The positions, exposed outside, of the first steel bars can be limited, the situation that when the concrete laminated slab is hoisted, the first steel bars exposed outside the two ends of concrete are collided by external force, and then the first steel bars are bent or the distance is changed is avoided, and therefore the using effect of the concrete laminated slab is improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of concrete composite slabs, in particular to a crack-resistant and highly reliable prefabricated concrete composite slab. Background Art

[0002] Precast concrete composite slab is a concrete slab prefabricated in a factory, which has the advantages of convenient construction, short construction period, high efficiency and high plasticity.

[0003] When pouring concrete composite slabs, first steel bars are added inside the concrete to improve the crack resistance of the concrete composite slabs, and second steel bars are added on the top of the concrete to facilitate hoisting. When hoisting the concrete composite slabs, the first steel bars exposed to the outside of the concrete at both ends are easily bent or the spacing changes after being hit by external forces, which leads to problems that affect the use effect of the concrete composite slabs. Utility Model Content

[0004] The utility model proposes a crack-resistant and highly reliable precast concrete composite slab to solve the problem that when the concrete composite slab is hoisted, the first steel bars exposed at the two ends of the concrete are easily bent or the spacing is changed after being hit by external force, thereby affecting the use effect of the concrete composite slab.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a crack-resistant and highly reliable precast concrete composite slab, comprising a concrete slab, a plurality of first steel bars are arranged inside the concrete slab, a plurality of second steel bars are arranged on one side of the concrete slab, a limiting device is arranged on the surface of the second steel bar, the limiting device comprises a bolt, the bolt abuts against the second steel bar, a first ring is threadedly connected to the surface of the bolt, a connecting frame is fixedly connected to one side of the connecting frame, a plurality of second rings are fixedly connected to one side of the connecting frame, and the plurality of second rings are sleeved on the surface of the first steel bar.

[0006] The effect achieved by the above components is: when pouring the concrete composite slab, a first steel bar is added inside the concrete to improve the crack resistance of the concrete composite slab, and a second steel bar is added to the upper end of the concrete to facilitate hoisting. When hoisting the concrete composite slab, the connecting frame can be held to make the first ring fit on the surface of the second steel bar, and then several second rings are put on the surface of the first steel bar, and then the bolt is turned to make the bolt rotate inside the first ring, and then the bolt is fixed against the second steel bar, and then the position of the connecting frame and the second ring is fixed, and then the first steel bar is limited to the exposed area. By using the limiting device, the exposed part of the first steel bar can be limited to avoid the first steel bar bending or the change of spacing after the first steel bar exposed to the outside of the two ends of the concrete is hit by external force when the concrete composite slab is hoisted, thereby improving the use effect of the concrete composite slab.

[0007] Preferably, one end of the bolt is fixedly connected to an operating block, and a surface of the operating block is provided with a plurality of anti-slip protrusions.

[0008] The effect achieved by the above components is that the friction between the operator's hand and the bolt can be increased through the operating block, thereby making it easier for the operator to turn the bolt.

[0009] Preferably, an elastic rope is fixedly connected to one side of the first circular ring, and one end of the elastic rope away from the first circular ring is fixedly connected to a bolt.

[0010] The effect achieved by the above components is that the bolt can be connected and fixed to the first ring through the elastic rope to avoid the bolt being lost.

[0011] Preferably, a rubber sleeve is provided on the surface of the connecting frame, and the size of the rubber sleeve is matched with the size of the connecting frame.

[0012] The effect achieved by the above components is that the friction between the operator's hand and the connecting frame can be improved through the rubber sleeve, so that the operator can better hold the connecting frame for use.

[0013] Preferably, the size of the first circular ring matches the size of the second steel bar, the size of the second circular ring matches the size of the first steel bar, and the spacing between a plurality of the second circular rings matches the spacing between a plurality of the first steel bars.

[0014] The effect achieved by the above components is that the position of the first steel bar can be well restricted by the second ring with adapted size and spacing, thereby improving the use effect of the second ring.

[0015] Preferably, a reinforcing device is fixedly connected to one side of the connecting frame, and the reinforcing device includes a placement block, the placement block is fixedly connected to the connecting frame, a clamping block is inserted inside the placement block, the reinforcing frame is clamped on the surface of the clamping block, and the reinforcing frame is clamped to the connecting frame on a side away from the placement block.

[0016] The effect achieved by the above components is: when using the connecting frame, the reinforcing frame can be moved so that one end of the reinforcing frame is clamped with the connecting frame and the other end is inserted into the placement block, and then the clamping block is moved so that the clamping block passes through the placement block and is clamped and fixed with the reinforcing frame, and then the position of the reinforcing frame is fixed. By using the reinforcing device, the connecting frame can be reinforced, and then the connection frame can be prevented from being deformed by force.

[0017] Preferably, a slide groove is provided on one side of the placement block, and a baffle is slidably connected inside the slide groove on the surface of the placement block.

[0018] The effect achieved by the above components is that when the block is fixedly connected to the reinforcing frame, the baffle inside the slide groove on the surface of the block can be moved to block and limit the position of the block, thereby preventing the block from detaching from the reinforcing frame.

[0019] Preferably, an inclined plate is fixedly connected to one side of the placement block, and the inclined plate is obliquely arranged on the surface of the placement block.

[0020] The effect achieved by the above components is that the size of the placement block entrance can be increased by the inclined plate, and then the reinforcing frame can be inserted into the placement block more easily.

[0021] In summary, the beneficial effects of the utility model are:

[0022] By using a limiting device, the exposed portion of the first steel bar can be limited to avoid bending or changes in spacing of the first steel bars after the first steel bars exposed at both ends of the concrete are hit by external force when the concrete composite slab is hoisted, thereby improving the use effect of the concrete composite slab. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0024] Figure 2 It is a three-dimensional structural schematic diagram of the limiting device of the utility model;

[0025] Figure 3 For this utility model Figure 2 A magnified image of point A;

[0026] Figure 4 For this utility model Figure 2 Large picture of point B.

[0027] Legend: 1. Concrete slab; 2. Limiting device; 21. Bolt; 22. First ring; 23. Connecting frame; 24. Second ring; 25. Operating block; 26. Protruding block; 27. Elastic rope; 28. Rubber sleeve; 3. Reinforcing device; 31. Placement block; 32. Card block; 33. Reinforcing frame; 34. Slide; 35. Baffle; 36. Inclined plate; 4. First steel bar; 5. Second steel bar. DETAILED DESCRIPTION

[0028] Reference Figure 1-4 As shown, this embodiment discloses a crack-resistant and highly reliable precast concrete composite slab, including a concrete slab 1, a plurality of first steel bars 4 are arranged inside the concrete slab 1, a plurality of second steel bars 5 are arranged on one side of the concrete slab 1, and a limiting device 2 is arranged on the surface of the second steel bars 5.

[0029] Reference Figure 1-4 As shown, the present embodiment discloses that the limiting device 2 includes a bolt 21, the bolt 21 abuts against the second steel bar 5, the surface of the bolt 21 is threadedly connected with a first ring 22, one side of the first ring 22 is fixedly connected with a connecting frame 23, one side of the connecting frame 23 is fixedly connected with a plurality of second rings 24, and the plurality of second rings 24 are sleeved on the surface of the first steel bar 4. When pouring a concrete composite slab, a first steel bar 4 is added inside the concrete to improve the crack resistance of the concrete composite slab, and a second steel bar 5 is added to the upper end of the concrete to facilitate hoisting. When hoisting the concrete composite slab, the connecting frame 23 can be held to allow the first circular ring 22 to be put on the surface of the second steel bar 5, and then the second circular rings 24 can be put on the surface of the first steel bar 4, and then the bolt 21 can be rotated to allow the bolt 21 to rotate inside the first circular ring 22, and then the bolt 21 can be abutted and fixed against the second steel bar 5, and then the position of the connecting frame 23 and the second circular ring 24 can be fixed, and then the first steel bar 4 exposed to the outside area can be limited. By using the limiting device 2, the exposed part of the first steel bar 4 can be limited, so as to avoid the first steel bar 4 being bent or the spacing changing after the first steel bar 4 exposed to the outside of the concrete at both ends is hit by external force when the concrete composite slab is hoisted, thereby improving the use effect of the concrete composite slab.

[0030] Reference Figure 1-4As shown, this embodiment discloses that one end of the bolt 21 is fixedly connected to an operating block 25, and the surface of the operating block 25 is provided with a plurality of anti-slip protrusions. The operating block 25 can be used to increase the friction between the operator's hand and the bolt 21, so that the operator can turn the bolt 21 more easily. An elastic rope 27 is fixedly connected to one side of the first ring 22, and the end of the elastic rope 27 away from the first ring 24 is fixedly connected to the bolt 21. The elastic rope 27 can be used to connect and fix the bolt 21 to the first ring 22 to avoid the loss of the bolt 21. A rubber sleeve 28 is provided on the surface of the connecting frame 23, and the size of the rubber sleeve 28 is adapted to the size of the connecting frame 23. The rubber sleeve 28 can be used to increase the friction between the operator's hand and the connecting frame 23, so that the operator can better hold the connecting frame 23 for use. The size of the first ring 22 is adapted to the size of the second steel bar 5, the size of the second ring 24 is adapted to the size of the first steel bar 4, and the spacing between several second rings 24 is adapted to the spacing between several first steel bars 4. The second ring 24 with adapted size and spacing can be used to effectively restrict the position of the first steel bar 4, thereby improving the use effect of the second ring 24.

[0031] Reference Figure 1-4 As shown, the present embodiment discloses that one side of the connection frame 23 is fixedly connected with a reinforcing device 3, and the reinforcing device 3 includes a placement block 31, the placement block 31 is fixedly connected to the connection frame 23, a clamping block 32 is inserted inside the placement block 31, the surface of the clamping block 32 is clamped with the reinforcing frame 33, and the side of the reinforcing frame 33 away from the placement block 31 is clamped with the connection frame 23. When using the connection frame 23, the reinforcing frame 33 can be moved so that one end of the reinforcing frame 33 is clamped with the connection frame 23, and the other end is inserted into the placement block 31, and then the clamping block 32 is moved so that the clamping block 32 passes through the placement block 31 and is clamped and fixed with the reinforcing frame 33, and then the position of the reinforcing frame 33 is fixed. By using the reinforcing device 3, the connection frame 23 can be strengthened, and then the connection frame 23 can be prevented from being deformed by force.

[0032] Reference Figure 1-4 As shown, this embodiment discloses that a slide groove 34 is provided on one side of the placement block 31, and a baffle 35 is slidably connected inside the slide groove 34 on the surface of the placement block 31. When the block 32 is fixedly engaged with the reinforcing frame 33, the baffle 35 inside the slide groove 34 on the surface of the placement block 31 can be moved so that the baffle 35 blocks and limits the position of the block 32, thereby preventing the block 32 from being separated from the reinforcing frame 33. An inclined plate 36 is fixedly connected to one side of the placement block 31, and the inclined plate 36 is obliquely arranged on the surface of the placement block 31. The inclined plate 36 can be used to increase the size of the entrance of the placement block 31, thereby making it easier for the reinforcing frame 33 to be inserted into the placement block 31.

[0033] Working principle: When pouring concrete composite slabs, a first steel bar 4 is added inside the concrete to improve the crack resistance of the concrete composite slab, and a second steel bar 5 is added to the upper end of the concrete to facilitate hoisting. When hoisting the concrete composite slab, the connecting frame 23 with the rubber sleeve 28 can be held, so that the first ring 22 is put on the surface of the second steel bar 5, and then a plurality of second rings 24 are put on the surface of the first steel bar 4, and then the bolt 21 with the elastic rope 27 is rotated through the operating block 25, so that the bolt 21 rotates inside the first ring 22, and then the bolt 21 is abutted and fixed with the second steel bar 5, and then the position of the connecting frame 23 and the second ring 24 is fixed, and then the first steel bar 4 is exposed to the outside area. The position limiting device 2 can be used to limit the exposed part of the first steel bar 4, so as to avoid the first steel bar 4 bending or the change of the spacing after the first steel bar 4 exposed to the outside of the concrete at both ends is hit by external force when hoisting the concrete composite slab, thereby improving the use effect of the concrete composite slab.

[0034] When using the connecting frame 23, the reinforcing frame 33 can be moved so that one end of the reinforcing frame 33 is clamped with the connecting frame 23, and the other end is inserted into the placement block 31 with the inclined plate 36, and then the clamping block 32 is moved so that the clamping block 32 passes through the placement block 31 and is clamped and fixed to the reinforcing frame 33, and then the baffle 35 inside the slide groove 34 on the surface of the placement block 31 is moved so that the baffle 35 blocks and limits the position of the clamping block 32, and then the position of the reinforcing frame 33 is fixed. By using the reinforcing device 3, the connecting frame 23 can be strengthened, and then the connection frame 23 can be prevented from being deformed by force.

Claims

1. A crack-resistant and highly reliable prefabricated concrete composite slab, comprising a concrete slab (1), characterized in that: A plurality of first steel bars (4) are arranged inside the concrete slab (1), a plurality of second steel bars (5) are arranged on one side of the concrete slab (1), a limiting device (2) is arranged on the surface of the second steel bars (5), the limiting device (2) comprises a bolt (21), the bolt (21) is in contact with the second steel bars (5), a first circular ring (22) is threadedly connected to the surface of the bolt (21), a connecting frame (23) is fixedly connected to one side of the first circular ring (22), a plurality of second circular rings (24) are fixedly connected to one side of the connecting frame (23), and the plurality of second circular rings (24) are sleeved on the surface of the first steel bars (4).

2. The crack-resistant and highly reliable precast concrete composite slab according to claim 1, characterized in that: One end of the bolt (21) is fixedly connected to an operating block (25), and a surface of the operating block (25) is provided with a plurality of anti-slip protrusions.

3. The crack-resistant and highly reliable precast concrete composite slab according to claim 2 is characterized in that: An elastic rope (27) is fixedly connected to one side of the first circular ring (22), and one end of the elastic rope (27) away from the first circular ring (22) is fixedly connected to the bolt (21).

4. The crack-resistant and highly reliable precast concrete composite slab according to claim 3 is characterized in that: A rubber sleeve (28) is provided on the surface of the connecting frame (23), and the size of the rubber sleeve (28) is matched with the size of the connecting frame (23).

5. The crack-resistant and highly reliable precast concrete composite slab according to claim 4 is characterized in that: The size of the first circular ring (22) matches the size of the second steel bar (5), the size of the second circular ring (24) matches the size of the first steel bar (4), and the spacing between a plurality of the second circular rings (24) matches the spacing between a plurality of the first steel bars (4).

6. The crack-resistant and highly reliable precast concrete composite slab according to claim 5, characterized in that: A reinforcing device (3) is fixedly connected to one side of the connecting frame (23), and the reinforcing device (3) comprises a placement block (31), the placement block (31) is fixedly connected to the connecting frame (23), a clamping block (32) is inserted inside the placement block (31), the reinforcing frame (33) is clamped on the surface of the clamping block (32), and the reinforcing frame (33) is clamped to the connecting frame (23) on a side away from the placement block (31).

7. The crack-resistant and highly reliable precast concrete composite slab according to claim 6, characterized in that: A sliding groove (34) is provided on one side of the placement block (31), and a baffle (35) is slidably connected inside the sliding groove (34) on the surface of the placement block (31).

8. The crack-resistant and highly reliable precast concrete composite slab according to claim 7, characterized in that: An inclined plate (36) is fixedly connected to one side of the placement block (31), and the inclined plate (36) is obliquely arranged on the surface of the placement block (31).