An assembled reinforcing cover pad block

By combining open upper and lower pads and connecting limiting components, the problem of fixing the position of the reinforcing cage is solved, the stable installation of the reinforcing cage and the control of the thickness of the concrete protective layer are achieved, and the construction efficiency and strength of the pile foundation are improved.

CN224591671UActive Publication Date: 2026-08-04CHINA CONSTR SECOND ENG BUREAU LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA CONSTR SECOND ENG BUREAU LTD
Filing Date
2025-07-28
Publication Date
2026-08-04

AI Technical Summary

Technical Problem

The existing steel cage spacers are closed circular rings, and their positions are fixed after installation, making them difficult to adjust. This causes the steel cage to tilt to one side during construction, affecting the thickness of the concrete cover and the strength and stability of the pile foundation.

Method used

An open-type upper and lower pad block was designed. Through the combination of connectors and limiting components, the position of the pad block on the rebar cage can be flexibly adjusted. The cooperation of connectors and limiting components can also adapt to different construction scenarios and changes in rebar cage size.

Benefits of technology

This method ensures stable installation of the reinforcing cage, guarantees that the concrete protective layer thickness meets requirements, improves the strength and stability of the pile foundation, and allows the spacers to be removed and reused, reducing construction difficulty and time.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an assembled reinforced protection layer cushion block, including upper cushion block and lower cushion block, be provided with connecting piece between upper cushion block and lower cushion block, and connecting piece includes connecting column and clamping plate, and clamping plate sets up in the lower end close to connecting column, and the upper surface of lower cushion block is equipped with the connecting hole of adapting with connecting column, and the limiting piece sets up between connecting piece and lower cushion block, and limiting piece includes limiting post and stop lever, and stop lever sets up in limiting post front end. The utility model discloses through the cushion block design of open type, and is designed as two cushion blocks cooperation use, makes it removable turnover use, and the cushion block in the use process, through connecting piece and limiting piece cooperation can adjust according to need, adapts to different construction scene and the size change of reinforcement cage.
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Description

Technical Field

[0001] This utility model relates to, but is not limited to, the field of building construction technology, and more specifically, to a prefabricated steel reinforcement protective layer pad. Background Technology

[0002] Pile foundations are a common type of foundation, consisting of piles and a pile cap connected to the top of the piles. With the increasing use of piles and the development of theoretical research on pile foundations, they are increasingly being applied in the foundations of public buildings with large-span roof structures, such as bridges, highways, ports, offshore drilling platforms, high-rise buildings, foundation pits, ground foundations, airports, and stadiums. Currently, the vast majority of pile foundation materials are reinforced concrete. During pile foundation construction, the reinforcing cage often tilts to one side under gravity, sometimes even contacting the inner wall of the pile foundation mold. This makes it difficult to achieve the required concrete cover thickness, affecting the strength and stability of the poured pile foundation model.

[0003] However, existing rebar cage spacers are typically closed rings, requiring installation before the rebar cage is fully tied. Once the rebar cage is tied, its position cannot be changed; if it is misplaced and needs to be moved, the rebar cage must be disassembled, a time-consuming and labor-intensive process. Therefore, a prefabricated rebar protective layer spacer is designed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a prefabricated steel reinforcement protective layer pad.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] This utility model discloses a prefabricated steel reinforcement protective layer spacer, including an upper spacer and a lower spacer. A connector is provided between the upper spacer and the lower spacer. The connector includes a connecting column and a clamping plate. The clamping plate is located at the lower end near the connecting column. A connecting hole adapted to the connecting column is opened on the upper surface of the lower spacer.

[0007] A limiting component is provided between the connecting component and the lower pad block. The limiting component includes a limiting post and a stop bar, with the stop bar located at the front end of the limiting post.

[0008] As a preferred embodiment of this utility model, both the upper pad and the lower pad are open, and both the upper pad and the lower pad have clamping ends fixed at their ends.

[0009] As a preferred embodiment of this utility model, the connecting column is hollow, and a fixing column adapted to the inner diameter of the connecting column is fixed inside the connecting hole. Symmetrical expansion joints are provided on the surface of the connecting column.

[0010] As a preferred embodiment of this utility model, the lower end of the card plate is fixedly connected to the connecting post, the upper end of the card plate is movably connected to the connecting post and is inclined, and a card groove adapted to the card plate is provided on the inner wall of the connecting hole.

[0011] As a preferred technical solution of this utility model, the limiting post has a "T" shaped cross-section, and four stop bars are provided on the outer side of the front end of the limiting post. The four stop bars are arranged in a circumferential array, and an installation frame is provided between the stop bars and the limiting post. The installation frame is embedded on the outer side of the stop bars.

[0012] As a preferred technical solution of this utility model, the mounting frame is rotatably connected to the rear end of the stop bar. The stop bar has an arc-shaped design, and a limiting hole adapted to the limiting post is opened near the upper end of the lower pad and the connecting post. The two limiting holes are set with the same center.

[0013] In a preferred embodiment of this utility model, the connecting column is made of polyurethane, and the clamping plate and the stop bar are made of rubber.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This utility model features an open-type pad design, with two pads designed to work together, allowing for easy removal and reuse. During use, the pads can be adjusted as needed through the connection and limiting components to adapt to different construction scenarios and changes in the size of the rebar cage. This solves the problem that existing rebar cage pads are usually closed rings and cannot be repositioned.

[0016] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a disassembly diagram of the present invention;

[0020] Figure 2 This is an enlarged view of part A of the disassembled structural diagram of this utility model;

[0021] Figure 3 This is a cross-sectional structural schematic diagram of the present invention;

[0022] Figure 4 This is an enlarged view of part B of the cross-sectional structural schematic diagram of this utility model;

[0023] Figure 5 This is a schematic diagram of the overall structure of this utility model;

[0024] In the diagram: 10. Upper pad block; 101. Clamping end;

[0025] 20. Lower pad; 201. Connecting hole; 202. Fixing post; 203. Slot; 204. Limiting hole;

[0026] 30. Connecting parts; 301. Connecting columns; 302. Expansion joints; 303. Clamping plates;

[0027] 40. Limiting component; 401. Limiting post; 402. Stop bar; 403. Mounting frame. Detailed Implementation

[0028] like Figure 1-5 As shown, this utility model provides an assembled rebar protective layer spacer, including an upper spacer 10 and a lower spacer 20. A connector 30 is provided between the upper spacer 10 and the lower spacer 20. The connector 30 includes a connecting post 301 and a clamping plate 303. The clamping plate 303 is located at the lower end near the connecting post 301. A connecting hole 201 adapted to the connecting post 301 is opened on the upper surface of the lower spacer 20.

[0029] The limiting component 40 is disposed between the connecting component 30 and the lower pad block 20. The limiting component 40 includes a limiting post 401 and a stop bar 402, with the stop bar 402 disposed at the front end of the limiting post 401.

[0030] Furthermore, in this embodiment, both the upper pad 10 and the lower pad 20 are designed with openings. The ends of both the upper pad 10 and the lower pad 20 are fixed with clamping ends 101. The design of the pads makes it easy to clamp them onto the reinforcing bars. Bolts are used to tighten the clamping ends 101, close the openings, and install the pads. The position can be flexibly adjusted according to construction needs during installation.

[0031] In this embodiment, the upper end of the connecting post 301 is threadedly engaged with the upper pad block 10. The connecting post 301 is hollow. A fixing post 202 adapted to the inner diameter of the connecting post 301 is fixed inside the connecting hole 201. Symmetrical expansion joints 302 are provided on the surface of the connecting post 301. The fixing post 202 is used so that when the hollow connecting post 301 is inserted into the connecting hole 201, the fixing post 202 is simultaneously inserted into the connecting post 301, and the connecting post 301 is stretched open based on the expansion joints 302.

[0032] In this embodiment, the lower end of the clamping plate 303 is fixedly connected to the connecting post 301, and the upper end of the clamping plate 303 is movably connected to the connecting post 301, and is inclined. The design of the clamping plate 303 makes it form a "V" shape with the plane of the connecting post 301. The inner wall of the connecting hole 201 is provided with a groove 203 that is adapted to the clamping plate 303. When the connecting post 301 is inserted, the clamping plate 303 retracts inward under the action of the inner wall of the connecting hole 203. At the same time, its inner side abuts against the outer wall of the connecting post 301, generating friction. When the clamping plate 303 moves to the position of the groove 203, it unfolds and is inserted into the groove 203 under its own elasticity. At this time, the friction between the clamping plate 303 and the groove 203 and the clamping force of the clamping plate 303 on the inner wall of the connecting post 301 interact to ensure the stability of the connection between the connecting piece 30 and the lower pad 20, effectively preventing the connecting post 301 from loosening or falling off during use.

[0033] In this embodiment, the limiting post 401 has a "T" shaped cross-section. Four stop bars 402 are provided on the outer side of the front end of the limiting post 401. The four stop bars 402 are arranged in a circular array. An installation frame 403 is provided between the stop bars 402 and the limiting post 401. The installation frame 403 is embedded on the outer side of the stop bars 402 and fixed by screws. The stop bars 402 are installed on the limiting post 401 through the installation frame 403.

[0034] In this embodiment, the mounting frame 403 is rotatably connected to the rear end of the stop lever 402. The rear end of the stop lever 402 rotates inside the mounting frame 403 via a screw / bolt with a torsion spring, giving the stop lever 402 elastic rebound during rotation within the mounting frame 403. The stop lever 402 has an arc-shaped design, and both the upper end near the lower pad 20 and the connecting post 301 are provided with limiting holes 204 that are adapted to the limiting post 401. The two limiting holes 204 are concentrically arranged, limiting the stop lever 401. When the stop lever 402 enters the limiting hole 204, it is limited by the limiting post 401. When the stop lever 402 rotates inward and adheres to the surface of the limit post 401, the torsion spring is compressed and stores elastic potential energy. When the limit post 401 is fully inserted into the limit hole 204, the torsion spring rebounds, causing the stop lever 402 to unfold outward. Since the stop lever 402 is arc-shaped, it can fit tightly against the outer edge of the limit hole 204 after unfolding, forming an effective blockage and ensuring that the connection between the connecting post 301 and the lower pad 20 will not be displaced due to external force, thereby improving the stability and reliability of the entire device.

[0035] In this embodiment, the connecting post 301 is made of polyurethane, which allows the connecting post 301 to be elastically compressed and restored. The clamping plate 303 and the stop bar 402 are made of rubber, which makes it convenient for the clamping plate 303 and the stop bar 402 to be compressed and restored during use.

[0036] Specifically, adjust the usage direction of the upper and lower pads according to the actual installation of the reinforcing bars to facilitate their connection with the reinforcing bars. First, align the lower end of the connecting column 301 with the connecting hole 201 on the upper surface of the lower pad 20. When the connecting column 301 is inserted into the connecting hole 201, the fixing column 202 is simultaneously inserted into the connecting column 301 and opens the connecting column 301, allowing the connecting column 301 to be smoothly inserted into the lower pad 20. When the connecting column 301 is inserted into the connecting hole 201, the clamping plate 303 is restricted and contracted by the inner wall of the connecting hole 201. As the connecting column 301 is continuously inserted, the clamping plate 303 contracts inward under the action of the inner wall of the connecting hole 201. When the clamping plate 303 moves to the position of the slot 203, pull the connecting column 303 in the opposite direction, so that the clamping plate 203 unfolds under the elastic action and is inserted into the slot 203, completing the connection between the connector 30 and the lower pad 20.

[0037] After the initial connection of the upper and lower pads is completed, the limiting post 401 is aligned with the concentric limiting hole 204 opened at the upper end of the lower pad 20 and the connecting post 301. During the process of the limiting post 401 being inserted into the limiting hole 204, the stop rod 402 will rotate inward and stick to the surface of the limiting post 401. The spring between the stop rod 402 and the mounting frame 403 is compressed. When the limiting post 401 is fully inserted into the limiting hole 204, the spring rebounds, causing the stop rod 402 to unfold. The stop rod 402 extends out of the limiting hole 204 and blocks the outer end of the through hole. This plays a limiting role in the connection between the connecting post 301 and the lower pad 20, preventing the connecting post 301 from loosening or falling off during use. The upper pad 10 is fixed on the connecting post 301, completing the installation of the entire pad device.

[0038] According to construction needs, the position and posture of the pad blocks are adjusted appropriately. The pad blocks are clamped onto the reinforcing bars through the openings, and bolts are used to pass through their clamping ends. By loosening or tightening the bolts, the clamping ends are loosened and tightened. The clamping degree of the upper pad block 10 and the lower pad block 20 on the reinforcing bars is finely adjusted to ensure the stability and accuracy of the reinforcing cage. After construction is completed, the pad block device needs to be removed for reuse. Loosen the bolts and release the upper pad block 10 and the lower pad block 20 from the reinforcing bars. Then, the limiting piece 40 and the connecting column 301 are taken out in sequence and stored properly for future use.

[0039] The pad, fixing post 202, connecting post 301, expansion joint 302, clamping plate 303, limiting member 40, limiting post 401, stop bar 402, mounting frame 403 and other components of this utility model are all general standard parts or parts known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0040] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A prefabricated steel reinforcement protective layer spacer, characterized in that, It includes an upper pad (10) and a lower pad (20), and a connector (30) is provided between the upper pad (10) and the lower pad (20). The connector (30) includes a connecting post (301) and a retaining plate (303). The retaining plate (303) is located at the lower end near the connecting post (301). The upper surface of the lower pad (20) is provided with a connecting hole (201) that is adapted to the connecting post (301). The limiting member (40) is disposed between the connecting member (30) and the lower pad (20). The limiting member (40) includes a limiting post (401) and a stop bar (402). The stop bar (402) is disposed at the front end of the limiting post (401).

2. The prefabricated steel reinforcement protective layer spacer according to claim 1, characterized in that, Both the upper pad (10) and the lower pad (20) are open, and both the upper pad (10) and the lower pad (20) are fixed with clamping ends (101).

3. The prefabricated steel reinforcement protective layer spacer according to claim 2, characterized in that, The connecting column (301) is hollow, and a fixing column (202) that is adapted to the inner diameter of the connecting column (301) is fixed inside the connecting hole (201). Symmetrical expansion joints (302) are provided on the surface of the connecting column (301).

4. The prefabricated steel reinforcement protective layer spacer according to claim 3, characterized in that, The lower end of the card plate (303) is fixedly connected to the connecting post (301), and the upper end of the card plate (303) is movably connected to the connecting post (301) and is inclined. The inner wall of the connecting hole (201) is provided with a card groove (203) that is adapted to the card plate (303).

5. A prefabricated steel reinforcement protective layer spacer according to claim 4, characterized in that, The limiting post (401) has a "T" shaped cross section. Four stop bars (402) are provided on the outer front end of the limiting post (401). The four stop bars (402) are arranged in a circular array. An installation frame (403) is provided between the stop bar (402) and the limiting post (401). The installation frame (403) is embedded on the outer side of the stop bar (402).

6. A prefabricated steel reinforcement protective layer spacer according to claim 5, characterized in that, The mounting frame (403) is rotatably connected to the rear end of the stop bar (402). The stop bar (402) is arc-shaped, and the upper end near the lower pad (20) and the connecting column (301) is provided with a limiting hole (204) that is adapted to the limiting column (401). The two limiting holes (204) are set with the same center.

7. A prefabricated steel reinforcement protective layer spacer according to claim 6, characterized in that, The connecting column (301) is made of polyurethane, and the clamping plate (303) and the stop bar (402) are made of rubber.