A vehicle ramp anti-slip device for composite slabs

Abstract

This utility model relates to the field of automobile ramp design technology, specifically to an anti-slip device for a composite slab at the location of an automobile ramp. It includes: a composite slab, on which several nut sleeves are pre-embedded; a support system template located below the composite slab and having openings corresponding to the positions of the nut sleeves; the support system template is adapted to be connected to the nut sleeves by bolts. In this application, the support system template is connected to the nut sleeves by bolts, thereby connecting the support system template and the composite slab. The composite slab and the support system template form a robust integrated structure, effectively preventing the composite slab from slipping due to external forces at the location of the automobile ramp, ensuring the stability and safety of the ramp structure during construction and subsequent use.

Description

Technical Field

[0001] This utility model relates to the field of automobile ramp design technology, specifically to an anti-slip device for composite plates at automobile ramp locations. Background Technology

[0002] With the advancement of industrialized construction, prefabricated composite slabs have gained significant importance in the construction field due to their high efficiency and compactness. In the construction of prefabricated multi-level transportation hubs, vehicle ramps also utilize composite slab construction technology. However, in traditional construction, the composite slabs are directly placed on the ramp support system formwork, relying solely on the friction between the slab surface and the support system for stability. When pouring concrete for the upper part of the composite slab, the external force generated by vibration often causes displacement of the composite slab located on the inclined surface of the support system formwork. After displacement, irregular gaps form between the support system formwork and the composite slab, affecting not only the structural integrity but also threatening the quality and safety of the project. Utility Model Content

[0003] In view of this, the present invention provides an anti-slip device for composite slabs at the location of automobile ramps, so as to solve the problem of engineering quality that may be caused by directly placing the composite slabs on the template of the ramp support system.

[0004] This utility model provides an anti-slip device for composite slabs at the position of a car ramp, comprising:

[0005] The composite slab has several nut sleeves pre-embedded on its precast plate;

[0006] The support system template is located below the composite plate and has an opening opposite to the position of the nut sleeve;

[0007] The support system template is adapted to be connected to the nut sleeve by bolts.

[0008] In this application, the support system template is connected to the nut sleeve via bolts, thereby connecting the support system template and the composite slab. The composite slab and the support system template form a robust integrated structure, effectively preventing the composite slab from slipping at the vehicle ramp location due to external forces (such as the impact force generated by concrete pouring and vibration), ensuring the stability and safety of the ramp structure during construction and subsequent use. From the perspective of construction convenience, the pre-embedded nut sleeve and subsequent bolt connection operations are relatively simple and easy to perform, allowing construction personnel to quickly and accurately install and fix the slab, improving construction efficiency while ensuring construction quality and helping to shorten the overall construction period. This application can avoid a series of quality problems caused by composite slab displacement, such as splicing misalignment and uneven gaps, reducing the need for additional manpower and resources for repairs due to quality issues, thereby reducing construction costs, improving the overall quality and efficiency of the project, and providing an efficient, stable, and economical solution for prefabricated building ramp construction.

[0009] In one optional embodiment, the nut sleeve comprises:

[0010] Nuts are pre-embedded on the side of the precast slab near the support system template;

[0011] The sleeve is embedded in the precast slab and is fixedly connected to the nut.

[0012] The bolt is adapted to be screwed into the nut, and the shank extends into the sleeve.

[0013] In this application, the combined design of the nut and sleeve better disperses and bears various forces generated by the composite slab and external loads, enhancing the load-bearing capacity of the connection node. When subjected to external forces, the force is transmitted not only through the threaded connection of the nut and bolt, but also further dispersed by the anchoring effect of the sleeve and the concrete within the precast slab. This improves the overall joint's anti-slip and anti-shear mechanical properties, making the connection between the composite slab and the support system more robust and reliable. During installation, the bolts and nuts can be more precisely aligned, reducing connection difficulties caused by factors such as precast slab deviations, ensuring the consistency and stability of construction quality. Furthermore, in terms of subsequent maintenance, if a problem occurs at a connection point, the separate design of the nut and sleeve facilitates the replacement or repair of damaged parts without requiring large-scale disassembly of the entire composite slab or support system, reducing maintenance costs and difficulty, and improving the maintainability and service life of the entire device.

[0014] In one alternative embodiment, the end face of the nut near the support system template is flush with the surface of the precast slab.

[0015] In this application, flush end faces ensure a tight fit between the composite slab and the supporting formwork, preventing localized stress concentration caused by protruding or recessed nuts. Under external forces, the composite slab can more evenly distribute the force to the supporting formwork, resulting in a more balanced stress distribution throughout the structure and enhancing its stability and safety. Simultaneously, during construction, flush end faces help maintain the flatness and integrity of the supporting formwork. During formwork installation and subsequent concrete pouring, protruding nuts will not affect the splicing and sealing of the formwork, reducing quality issues such as grout leakage and formwork deformation, thus improving construction quality. Furthermore, from an aesthetic and finishing perspective, the flush design makes the connection between the composite slab and the supporting formwork smoother and more aesthetically pleasing, providing a good base for subsequent finishing work. This eliminates the need for additional leveling or finishing, saving finishing costs and time, and enhancing the overall quality and appearance of the building.

[0016] In one alternative embodiment, the nut is an external hexagonal nut.

[0017] In this application, the hexagonal structure of the external hexagonal nut provides a larger wrench tightening surface, allowing construction workers to tighten the bolts and nuts more easily and securely, ensuring sufficient preload at the connection. This reliable tightening method effectively prevents slippage of the composite slab due to bolt loosening, enhancing the reliability of the connection. The hexagonal structure also prevents the nut embedded in the precast slab from rotating relative to the precast slab when subjected to torque with the bolt.

[0018] In one alternative embodiment, the head of the bolt is located on the side of the support system template away from the nut.

[0019] In one alternative embodiment, the head size of the bolt is larger than the diameter of the opening.

[0020] In this application, the bolt head size being larger than the hole diameter effectively prevents the bolt from slipping out of the opening in the support system template during installation or use. Even under significant external force, the bolt head remains firmly locked on the outside of the opening, ensuring that the composite plate and the support system are always connected, greatly enhancing the reliability of the connection. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0023] Figure 2 This is a schematic diagram showing the positions of the nut and sleeve in an embodiment of this utility model;

[0024] Figure 3 This is a schematic diagram of the support system template position in an embodiment of this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Composite slab; 2. Support system template; 3. Nut; 4. Sleeve; 5. Bolt. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, 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.

[0028] With the advancement of industrialized construction, prefabricated composite slabs have gained a significant position in the construction field due to their high efficiency and compactness. In the construction of prefabricated multi-level transportation hubs, vehicle ramps also utilize composite slab construction technology. However, in traditional construction, the composite slabs are directly placed on the ramp support system, relying solely on the friction between the slab surface and the support system for stability.

[0029] When pouring the upper concrete of a composite slab, the external force generated by vibration often causes displacement of the slab, which is located on an inclined surface. After displacement, irregular gaps are formed between the slabs, which not only affects the integrity of the structure but also threatens the quality and safety of the project.

[0030] To overcome this technical challenge, the ramp support system and composite slab fixing node proposed in this application have emerged. This node, with its ingenious structural design, constructs a robust mechanical connection, tightly anchoring the composite slab to the support system, thus eliminating the risk of slippage at its source. This injects strong momentum into improving the quality of prefabricated buildings and provides a new technical path for the high-quality development of the industry.

[0031] There are two major pain points in fixing the composite slab and support system at the existing ramp location: 1) Since the composite slab is placed directly on the ramp support system and fixed by friction between the slab surface and the support system, in actual construction, factors such as vibration can cause the composite slab to shift, leading to some quality problems; 2) When quality problems caused by the displacement of the composite slab occur, additional manpower and materials are required for repair, thereby increasing the construction cost.

[0032] The following is combined Figures 1 to 3 The following describes embodiments of the present invention.

[0033] According to embodiments of the present invention, such as Figure 3 As shown, a vehicle ramp anti-slip device for composite slabs is provided, comprising:

[0034] Composite plate 1, wherein a plurality of nut sleeves are pre-embedded on the precast plate of composite plate 1; the nut sleeves may be made of rubber.

[0035] The support system template 2 is located below the composite plate 1 and has an opening corresponding to the position of the nut sleeve; the position corresponding to the nut sleeve can be marked on the support system template 2 before the opening is made.

[0036] The support system template 2 is adapted to be connected to the nut sleeve via bolts 5. A bracket is provided below the support system template to provide operating space for installing the bolts 5. The top surface of the support system template 2 is in contact with the bottom surface of the precast slab of the composite slab 1. The precast slab is fixedly connected to the support system template 2 via bolts 5 and the nut sleeve, as shown below. Figure 1 As shown, composite slab 1 can be obtained by casting precast slabs in place.

[0037] In this application, the support system template 2 is connected to the nut sleeve via bolts 5, thereby connecting the support system template 2 and the composite slab 1. The composite slab 1 and the support system template 2 form a robust integrated structure, effectively preventing the composite slab 1 from slipping at the vehicle ramp location due to external forces such as the impact force generated by concrete pouring and vibration, ensuring the stability and safety of the ramp structure during construction and subsequent use. From the perspective of construction convenience, the pre-embedded nut sleeve and subsequent bolt 5 connection operations are relatively simple and easy to perform, allowing construction personnel to quickly and accurately install and fix the slab, improving construction efficiency while ensuring construction quality and helping to shorten the overall construction period. This application can avoid a series of quality problems caused by the displacement of the composite slab 1, such as splicing misalignment and uneven gaps, reducing the need for additional manpower and resources to repair quality problems, thereby reducing construction costs, improving the overall quality and efficiency of the project, and providing an efficient, stable, and economical solution for the construction of prefabricated building ramps.

[0038] In one alternative implementation, such as Figure 2 As shown, the nut sleeve includes:

[0039] Nut 3 is pre-embedded on the side of the precast slab near the support system template 2;

[0040] Sleeve 4 is embedded in the precast slab and is fixedly connected to nut 3;

[0041] The bolt 5 is adapted to be screwed onto the nut 3, and its shank extends into the sleeve 4. The nut 3 and the sleeve 4 can be coaxially connected, and the inner diameter of the sleeve 4 can be the same as the inner diameter of the nut 3.

[0042] In this application, the combined design of nut 3 and sleeve 4 can better distribute and bear various forces generated from the composite slab 1 and external loads, enhancing the load-bearing capacity of the connection node. When subjected to external forces, the force is not only transmitted through the threaded connection between nut 3 and bolt 5, but also further dispersed by the anchoring effect of sleeve 4 and the concrete within the precast slab, thereby improving the overall joint's anti-slip and anti-shear mechanical properties, making the connection between the composite slab 1 and the support system more robust and reliable. During installation, bolt 5 and nut 3 can be more precisely aligned, reducing connection difficulties caused by factors such as precast slab deviation, ensuring the consistency and stability of construction quality. Furthermore, in terms of subsequent maintenance, if a problem occurs at a certain connection point, the separate design of nut 3 and sleeve 4 facilitates the replacement or repair of damaged parts without requiring large-scale disassembly of the entire composite slab 1 or support system, reducing maintenance costs and difficulty, and improving the maintainability and service life of the entire device.

[0043] Alternatively, the nut 3 and sleeve 4 can be connected by an elastic element. When the composite slab 1 undergoes slight deformation due to factors such as temperature changes and concrete shrinkage, the elastic element can automatically adjust the positional relationship between the nut 3 and sleeve 4, maintaining a tight connection and ensuring that the normal function of the device is not affected. It absorbs and buffers the impact load and vibration experienced by the composite slab 1 at the ramp location, reduces the impact force between the nut 3 and sleeve 4, and improves service life.

[0044] In one alternative embodiment, the end face of the nut 3 near the support system template 2 is flush with the surface of the precast slab.

[0045] In this application, flush end faces ensure a tight fit between the composite slab 1 and the supporting formwork 2, preventing localized stress concentration caused by protruding or recessed nuts 3. When subjected to external forces, the composite slab 1 can more evenly distribute the force to the supporting formwork 2, resulting in a more balanced stress distribution throughout the structure and enhancing its stability and safety. Simultaneously, during construction, flush end faces help ensure the flatness and integrity of the supporting formwork 2. During formwork installation and subsequent concrete pouring, protruding nuts 3 will not affect the splicing and sealing of the formwork, reducing quality issues such as grout leakage and formwork deformation, thus improving construction quality. Furthermore, from an aesthetic and subsequent finishing perspective, the flush design makes the connection between the composite slab 1 and the supporting formwork 2 smoother and more aesthetically pleasing, providing a good base for subsequent finishing work without requiring additional leveling or finishing, saving finishing costs and time, and enhancing the overall quality and appearance of the building.

[0046] In one alternative embodiment, the nut 3 is an external hexagonal nut 3.

[0047] In this application, the hexagonal structure of the external hexagonal nut 3 provides a larger wrench tightening surface, allowing construction workers to tighten the bolt 5 and nut 3 more easily and securely, ensuring sufficient preload at the connection. This reliable tightening method effectively prevents slippage of the composite plate 1 due to loosening of the bolt 5, enhancing the reliability of the connection. The hexagonal structure also prevents the nut 3, embedded in the precast slab, from rotating relative to the precast slab when subjected to torque with the bolt 5.

[0048] In one alternative embodiment, the head of the bolt 5 is located on the side of the support system template 2 away from the nut 3.

[0049] In one alternative embodiment, the head size of the bolt 5 is larger than the diameter of the opening.

[0050] In this application, the bolt 5 head size being larger than the hole diameter effectively prevents the bolt 5 from slipping out of the opening in the support system template 2 during installation or use. Even under significant external force, the bolt 5 head remains firmly locked on the outside of the opening, ensuring that the composite plate 1 and the support system are always connected, greatly enhancing the reliability of the connection.

[0051] In this application, when the composite slab 1 is refined, a nut sleeve required for connection is reserved on the contact surface between the composite slab 1 and the support system. After the composite slab 1 is installed, it is connected to the nut 3 by bolts 5, so that the composite slab 1 and the support system template 2 are effectively fixed, eliminating the risk of slippage of the composite slab 1 from the root and helping to improve the overall quality of prefabricated buildings.

[0052] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A device for preventing slippage of composite slabs at the location of a car ramp, characterized in that, include: Composite plate (1), wherein a number of nut sleeves are pre-embedded on the precast plate of the composite plate (1); The support system template (2) is located below the composite plate (1) and has an opening opposite to the position of the nut sleeve; The support system template (2) is adapted to be connected to the nut sleeve by bolts (5).

2. The anti-slip device for the composite slab at the location of the vehicle ramp according to claim 1, characterized in that, The nut sleeve includes: Nut (3) is embedded in the precast slab on one side near the support system template (2); The sleeve (4) is embedded in the precast slab and is fixedly connected to the nut (3); The bolt (5) is adapted to be screwed into the nut (3), and the shank extends into the sleeve (4).

3. The anti-slip device for the composite slab at the location of the vehicle ramp according to claim 2, characterized in that, The end face of the nut (3) near the support system template (2) is flush with the surface of the precast slab.

4. The anti-slip device for the composite slab at the location of a car ramp according to claim 2, characterized in that, The nut (3) is an external hexagonal nut (3).

5. The anti-slip device for the composite slab at the location of a car ramp according to claim 2, characterized in that, The head of the bolt (5) is located on the side of the support system template (2) away from the nut (3).

6. The anti-slip device for the composite slab at the location of a vehicle ramp according to claim 1, characterized in that, The head size of the bolt (5) is larger than the diameter of the opening.

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