Large-span double-T-plate roof mounting and positioning device

Abstract

The utility model discloses a large-span double-T plate roof installing and positioning device, which relates to the technical field of building construction, and comprises a double-T prefabricated plate, four hoisting positioning holes are arranged on the surface of the double-T prefabricated plate, and the four hoisting positioning holes are symmetrically distributed on the surface of the double-T prefabricated plate in a way that two hoisting positioning holes form a group. U-shaped hoisting rods are installed on the inner walls of the hoisting positioning holes in an inserted mode, and a limiting mechanism is arranged below the double-T prefabricated slab and used for limiting the U-shaped hoisting rods and preventing the U-shaped hoisting rods from falling off. The hoisting positioning holes are prefabricated when the double-T-plate roof is formed in a pouring mode, in the hoisting positioning process of the double-T-plate roof, the U-shaped hoisting rods can be inserted into the hoisting positioning holes, and the bottoms of the U-shaped hoisting rods are limited and fixed below double-T prefabricated plates through the limiting mechanisms; therefore, the U-shaped hoisting rod is reinforced and prevented from falling off, and the situation that in the prior art, a hoisting screw rod is prone to falling off is avoided.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to an installation and positioning device for a large-span double-T slab roof. Background Technology

[0002] With societal progress and cultural diversification, industrial plants face demands for large spans, heavy loads, corrosion resistance, and high humidity, often employing partially prestressed concrete frame structures. However, this results in long construction periods, significant on-site tensioning work, and relatively high costs. Using light steel structures fails to address the issues of heavy loads and corrosion resistance. Prestressed double-T slab roofs, on the other hand, solve both the problems of large spans and heavy loads, as well as corrosion resistance. Through scientific design and construction of double-T slabs with specific requirements, they are suitable for use in industrial plants with large spans, heavy loads, high humidity, and corrosive environments, as well as in cleanrooms requiring high sealing. Compared to partially prestressed concrete frame structures and single-story light steel structures, double-T slabs offer a unique and irreplaceable market opportunity. Currently, double-T slabs are used in multi-story parking garages both domestically and internationally. With further research and applications in other structural systems, their applicability will become more universal, leading to even greater development potential for double-T slabs.

[0003] However, during the hoisting and installation of double-T slab roofs, the threaded rods of the hoisting components may loosen, which could easily cause the double-T slab itself to fall, resulting in a serious safety accident. Furthermore, it reduces the efficiency and effectiveness of the hoisting components, leading to poor practicality.

[0004] To improve the stability of the double T-plate hoisting posture during hoisting construction, we designed a hoisting auxiliary device, which includes a limit device to fix the hoisting bolts, effectively preventing the hoisting bolts from falling off. Utility Model Content

[0005] This utility model discloses an installation and positioning device for a large-span double-T slab roof, which aims to solve the technical problem of poor stability during the hoisting and construction of double-T slab roofs.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A large-span double-T slab roof installation and positioning device includes a double-T precast slab. The surface of the double-T precast slab has four hoisting positioning holes, which are symmetrically distributed on the surface of the double-T precast slab in pairs. A U-shaped hoisting rod is inserted into the inner wall of the hoisting positioning hole. A limiting mechanism is provided below the double-T precast slab to limit the U-shaped hoisting rod and prevent it from falling off.

[0008] The limiting mechanism includes a limiting support block, a strip-shaped fixing frame fixedly connected to the lower surface of the limiting support block, a bidirectional adjusting screw rotatably connected to the inner wall of the strip-shaped fixing frame, two adjusting blocks threadedly connected to the surface of the bidirectional adjusting screw, a positioning block fixedly connected to the upper surface of the adjusting block, a side movable plate fixedly connected to the side of the two positioning blocks that are far apart from each other, two limiting rods fixedly connected to the opposite surfaces of the two side movable plates, and a limiting insertion hole opened on the surface of the U-shaped lifting rod, the size of the limiting insertion hole matching the limiting rod.

[0009] By prefabricating lifting positioning holes during the casting and molding of the double-T slab roof, a U-shaped lifting rod can be inserted into the lifting positioning hole during the lifting and positioning process of the double-T slab roof. The bottom of the U-shaped lifting rod is limited and fixed by a limiting mechanism under the double-T precast slab, thereby reinforcing the U-shaped lifting rod and preventing it from falling off.

[0010] In a preferred embodiment, the position of the limiting rod corresponds to the limiting insertion hole, and two rod limiting grooves are provided on both the left and right sides of the limiting support block. The position of the rod limiting groove corresponds to the limiting rod, and the size of the rod limiting groove matches the limiting rod.

[0011] By setting a limiting groove for the insertion rod, the limiting insertion rod can be limited and reinforced, thereby improving the stability between the limiting insertion rod and the U-shaped lifting rod.

[0012] In a preferred embodiment, rectangular anti-detachment grooves are provided on both the left and right sides of the limiting support block. The position of the rectangular anti-detachment grooves corresponds to that of the positioning block, and the size of the rectangular anti-detachment grooves matches that of the positioning block.

[0013] By setting positioning blocks and rectangular anti-detachment grooves, the positioning blocks can be inserted into the rectangular anti-detachment grooves on the surface of the limiting support blocks, thereby limiting the positioning blocks and further improving the overall stability of the limiting mechanism, which is conducive to improving the accuracy of the installation and positioning of the double-T precast slab.

[0014] In a preferred embodiment, a plurality of rubber buffer blocks are fixedly connected to the upper surface of the limiting support block, and the rubber buffer blocks are used to provide tight support for the bottom of the double-T precast slab.

[0015] By setting a rubber buffer block on the upper surface of the limiting support block, the anti-slip effect between the limiting support block and the double-T precast slab can be improved, and it can also play a certain role in shock absorption and buffering.

[0016] In a preferred embodiment, both ends of the bidirectional adjusting screw extend outside the strip-shaped fixing frame and are fixedly connected with adjusting nuts.

[0017] By setting an adjusting nut, it is convenient for staff to use tools to turn the adjusting nut, which in turn drives the bidirectional adjusting screw to rotate.

[0018] In a preferred embodiment, the size of the adjusting block matches the interior of the strip-shaped fixing frame, and both sides of the adjusting block are slidably connected to the inner side of the strip-shaped fixing frame.

[0019] In a preferred embodiment, the surface of the U-shaped hoisting rod is fixedly fitted with a rubber anti-slip sleeve, and the surface of the U-shaped hoisting rod is used to install hoisting ropes.

[0020] By installing rubber anti-slip sleeves on the surface of the U-shaped lifting rod, the stability between the lifting rope and the U-shaped lifting rod can be improved.

[0021] As can be seen from the above, the installation and positioning device for a large-span double-T slab roof provided by this utility model has the following technical effects.

[0022] Firstly, by prefabricating lifting positioning holes during the casting and molding of the double-T slab roof, a U-shaped lifting rod can be inserted into the lifting positioning hole during the lifting and positioning process of the double-T slab roof. The bottom of the U-shaped lifting rod is limited and fixed by a limiting mechanism under the double-T precast slab, thereby reinforcing the U-shaped lifting rod and preventing it from falling off. This avoids the problem of lifting screws easily falling off in the existing technology, ensures the safety and reliability of the lifting components during the lifting process, effectively prevents the lifting screws from falling off, improves the safety performance during the lifting process, and enhances the stability of the double-T precast slab lifting posture.

[0023] Secondly, by setting a strip-shaped fixing frame and a two-way adjusting screw on the surface of the limiting support block, the two-way adjusting screw can be used to drive two limiting rods to be inserted into the limiting insertion holes on the surface of the U-shaped lifting rod, and the limiting rods can be inserted into the rod limiting grooves on the surface of the limiting support block at the same time. The rod limiting grooves can be used to limit and reinforce the limiting rods, thereby improving the firmness between the limiting rods and the U-shaped lifting rod.

[0024] Thirdly, by using positioning blocks and rectangular anti-detachment grooves, the positioning blocks can be inserted into the rectangular anti-detachment grooves on the surface of the limiting support blocks, thereby limiting the positioning blocks and further improving the overall stability of the limiting mechanism. This is beneficial to improving the accuracy of the double-T precast slab installation positioning, while also making the flange joints tighter, ensuring the accurate position of the double-T slab roof installation, improving construction efficiency, and reducing construction risks. Attached Figure Description

[0025] Figure 1 This is a front view structural diagram of an installation and positioning device for a large-span double-T slab roof proposed in this utility model.

[0026] Figure 2This is a schematic diagram of the bottom structure of a double-T precast slab for a large-span double-T slab roof installation and positioning device proposed in this utility model.

[0027] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle.

[0028] Figure 4 This is a schematic diagram of the limiting mechanism structure of a large-span double-T slab roof installation and positioning device proposed in this utility model.

[0029] Figure 5 This is a schematic diagram showing the installation connection between the limiting mechanism and the U-shaped hoisting rod of a large-span double-T slab roof installation and positioning device proposed in this utility model.

[0030] Figure 6 This is a schematic diagram of the U-shaped hoisting rod structure of a large-span double-T slab roof installation and positioning device proposed in this utility model.

[0031] In the attached diagram: 1. Double-T precast slab; 2. Lifting positioning hole; 3. U-shaped lifting rod; 4. Limiting mechanism; 5. Rubber anti-slip sleeve; 6. Limiting insertion hole; 401. Limiting support block; 402. Strip fixing frame; 403. Two-way adjusting screw; 404. Adjusting block; 405. Positioning block; 406. Side movable plate; 407. Limiting insertion rod; 409. Insertion rod limiting groove; 410. Rectangular anti-detachment groove; 411. Rubber buffer block; 412. Adjusting nut. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0033] Reference Figure 1 and Figure 2 A large-span double-T slab roof installation and positioning device includes a double-T precast slab 1. The surface of the double-T precast slab 1 is provided with four hoisting positioning holes 2. The four hoisting positioning holes 2 are symmetrically distributed on the surface of the double-T precast slab 1 in groups of two. U-shaped hoisting rods 3 are inserted and installed on the inner wall of the hoisting positioning holes 2.

[0034] Reference Figure 6 The surface of the U-shaped lifting rod 3 is fixedly fitted with a rubber anti-slip sleeve 5, and the surface of the U-shaped lifting rod 3 is used to install lifting ropes.

[0035] It should be noted that a limiting mechanism 4 is provided below the double-T precast slab 1. The limiting mechanism 4 is used to limit the U-shaped hoisting rod 3 and prevent it from falling off.

[0036] Reference Figure 3In a preferred embodiment, the limiting mechanism 4 includes a limiting support block 401, and a plurality of rubber buffer blocks 411 are fixedly connected to the upper surface of the limiting support block 401. The rubber buffer blocks 411 are used to provide tight support to the bottom of the double-T precast slab 1.

[0037] It should be noted that a strip-shaped fixing frame 402 is fixedly connected to the lower surface of the limiting support block 401, and a bidirectional adjusting screw 403 is rotatably connected to the inner wall of the strip-shaped fixing frame 402. Both ends of the bidirectional adjusting screw 403 extend to the outside of the strip-shaped fixing frame 402 and are fixedly connected to adjusting nuts 412.

[0038] It should be noted that, in a preferred embodiment, the surface of the bidirectional adjusting screw 403 is threaded with two adjusting blocks 404. The size of the adjusting blocks 404 matches the interior of the strip-shaped fixing frame 402, and both sides of the adjusting blocks 404 are slidably connected to the inner side of the strip-shaped fixing frame 402.

[0039] It should be noted that a positioning block 405 is fixedly connected to the upper surface of the adjusting block 404, and a side movable plate 406 is fixedly connected to the side of the two positioning blocks 405 that are far apart from each other. Two limit rods 407 are fixedly connected to the opposite surfaces of the two side movable plates 406. A limit hole 6 is opened on the surface of the U-shaped hoisting rod 3, and the size of the limit hole 6 matches the limit rod 407.

[0040] It is worth noting that by pre-fabricating the hoisting positioning holes 2 during the casting and molding of the double-T slab roof, a U-shaped hoisting rod 3 can be inserted into the hoisting positioning hole 2 during the hoisting and positioning process of the double-T slab roof. The bottom of the U-shaped hoisting rod 3 is limited and fixed by the limiting mechanism 4 below the double-T precast slab 1, thereby reinforcing the U-shaped hoisting rod 3 and preventing it from falling off. This avoids the situation where the hoisting screw is easy to fall off in the prior art, ensures the safety and reliability of the hoisting components during the hoisting process, effectively prevents the hoisting screw from falling off, improves the safety performance during the hoisting process, and improves the stability of the hoisting posture of the double-T precast slab 1.

[0041] Reference Figure 4 and Figure 5 In a preferred embodiment, the position of the limiting rod 407 corresponds to the limiting insertion hole 6. Two rod limiting grooves 409 are provided on both the left and right sides of the limiting support block 401. The position of the rod limiting grooves 409 corresponds to the limiting rod 407, and the size of the rod limiting grooves 409 matches the limiting rod 407.

[0042] It is worth noting that by providing a strip-shaped fixing frame 402 and a bidirectional adjusting screw 403 on the surface of the limiting support block 401, the bidirectional adjusting screw 403 can drive the two limiting rods 407 to be inserted into the limiting insertion holes 6 on the surface of the U-shaped lifting rod 3, and insert the limiting rods 407 into the rod limiting grooves 409 on the surface of the limiting support block 401. The rod limiting grooves 409 can be used to limit and reinforce the limiting rods 407, thereby improving the firmness between the limiting rods 407 and the U-shaped lifting rod 3.

[0043] It should be noted that rectangular anti-detachment grooves 410 are provided on both the left and right sides of the limiting support block 401. The position of the rectangular anti-detachment grooves 410 corresponds to that of the positioning block 405, and the size of the rectangular anti-detachment grooves 410 matches that of the positioning block 405.

[0044] It is worth noting that, through the positioning block 405 and the rectangular anti-detachment groove 410, when the side movable plate 406 moves the limiting rod 407, the positioning block 405 is simultaneously inserted into the rectangular anti-detachment groove 410 on the surface of the limiting support block 401. Thus, the rectangular anti-detachment groove 410 is used to limit the positioning block 405, further improving the overall stability of the limiting mechanism 4. This is beneficial to improving the accuracy of the installation and positioning of the double-T precast slab 1, while making the flange joints tighter, ensuring the accurate position of the double-T slab roof installation, improving construction efficiency, and reducing construction risks.

[0045] Working principle: In use, first insert the four U-shaped lifting rods 3 into the lifting positioning holes 2 on the surface of the double-T precast slab 1, then place the two limiting support blocks 401 under the two U-shaped lifting rods 3 on the same side, align the limiting insert 407 with the limiting insertion hole 6 on the surface of the U-shaped lifting rod 3, then rotate the adjusting nut 412 to drive the bidirectional adjusting screw 403 to rotate, thereby driving the two adjusting blocks 404 and the side movable plate 406 to move towards the middle at the same time, so that the limiting insert 407 passes through the limiting insertion hole 6 of the U-shaped lifting rod 3 and is inserted into the insert rod limiting groove 409 on the surface of the limiting support block 401, thereby limiting the limiting insert 407 and simultaneously preventing the U-shaped lifting rod 3 from falling off and limiting it.

[0046] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A large-span double-T slab roof installation and positioning device, comprising double-T precast slabs, characterized in that, The surface of the double-T precast slab has four lifting positioning holes, which are symmetrically distributed on the surface of the double-T precast slab in pairs. A U-shaped lifting rod is inserted into the inner wall of the lifting positioning hole. A limiting mechanism is provided below the double-T precast slab to limit the U-shaped lifting rod and prevent it from falling off. The limiting mechanism includes a limiting support block, a strip-shaped fixing frame fixedly connected to the lower surface of the limiting support block, a bidirectional adjusting screw rotatably connected to the inner wall of the strip-shaped fixing frame, two adjusting blocks threadedly connected to the surface of the bidirectional adjusting screw, a positioning block fixedly connected to the upper surface of the adjusting block, a side movable plate fixedly connected to the side of the two positioning blocks that are far apart from each other, two limiting rods fixedly connected to the opposite surfaces of the two side movable plates, and a limiting insertion hole opened on the surface of the U-shaped lifting rod, the size of the limiting insertion hole matching the limiting rod.

2. The installation and positioning device for a large-span double-T slab roof according to claim 1, characterized in that, The position of the limiting rod corresponds to the limiting insertion hole. Two rod limiting grooves are opened on both the left and right sides of the limiting support block. The position of the rod limiting groove corresponds to the limiting rod, and the size of the rod limiting groove matches the limiting rod.

3. The installation and positioning device for a large-span double-T slab roof according to claim 1, characterized in that, The limiting support block has rectangular anti-detachment grooves on both its left and right sides. The position of the rectangular anti-detachment grooves corresponds to that of the positioning block, and the size of the rectangular anti-detachment grooves matches that of the positioning block.

4. The installation and positioning device for a large-span double-T slab roof according to claim 1, characterized in that, Several rubber buffer blocks are fixedly connected to the upper surface of the limiting support block. The rubber buffer blocks are used to provide tight support for the bottom of the double-T precast slab.

5. The installation and positioning device for a large-span double-T slab roof according to claim 1, characterized in that, Both ends of the bidirectional adjusting screw extend outside the strip-shaped fixing frame and are fixedly connected with adjusting nuts.

6. The installation and positioning device for a large-span double-T slab roof according to claim 1, characterized in that, The size of the adjusting block matches the interior of the strip-shaped fixing frame, and both sides of the adjusting block are slidably connected to the inner side of the strip-shaped fixing frame.

7. The installation and positioning device for a large-span double-T slab roof according to claim 1, characterized in that, The surface of the U-shaped hoisting rod is fixedly fitted with a rubber anti-slip sleeve, and the surface of the U-shaped hoisting rod is used to install hoisting ropes.

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