Reinforcing steel bar protective layer cushion block for bare concrete beam and slab construction and building
By setting various receiving grooves and hollow grooves on the steel reinforcement protective layer spacers, the problem of uneven protective layer thickness in fair-faced concrete beam and slab construction was solved, enabling flexible adjustment of the protective layer thickness and improvement of structural strength.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG CONSTR ENG GRP CO LTD
- Filing Date
- 2025-04-25
- Publication Date
- 2026-04-28
AI Technical Summary
In the existing technology, the steel reinforcement protective layer spacer cannot adapt to the different construction requirements of fair-faced concrete beams and slabs, resulting in uneven protective layer thickness, which affects the structural strength and appearance.
A reinforcement protective layer spacer for fair-faced concrete beam and slab construction is designed. By setting receiving grooves of different depths and directions on the spacer body, the placement position of the reinforcement can be adjusted to adapt to different construction requirements. Hollow grooves are also opened on the spacer body to save materials and enhance structural strength.
It enables flexible adjustment of the protective layer thickness to adapt to different construction needs, avoids uneven protective layer thickness, and improves structural strength and appearance quality.
Smart Images

Figure CN224173605U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of building construction, and in particular to a steel reinforcement protective layer spacer and building for use in fair-faced concrete beam and slab construction. Background Technology
[0002] In the field of building construction, when the concrete cover for reinforcing bars is too thin or missing, the anchorage force of the reinforcing bars will decrease, thereby affecting the structure's resistance to axial forces and bending moments, and also making it very easy for exposed reinforcing bars to appear. On the other hand, if the concrete cover is too thick, cracks are prone to appear on the concrete surface, affecting the stress and forming effect of the reinforcing bars in the concrete.
[0003] Currently, in construction, the thickness of the concrete protective layer is usually ensured by fixing protective layer spacers to the reinforcing bars. Utility model patent CN2706551Y discloses a spacer for negative bending moment reinforcing bars in concrete protective layer, characterized in that the main body of the spacer is a frustum or truncated pyramid, and the upper bottom surface of the frustum or truncated pyramid has a groove.
[0004] However, in actual construction scenarios, the aforementioned pads are not suitable for the different requirements of protective layer thickness for different fair-faced concrete beams and slabs, and their applicability is poor. Utility Model Content
[0005] To address the problems existing in the prior art, this utility model provides a steel reinforcement protective layer spacer for fair-faced concrete beam and slab construction. The thickness of the protective layer can be adjusted by changing the different placement of the spacer body to suit different construction requirements of fair-faced concrete beams and slabs, thus having better adaptability.
[0006] The technical solution to the problem of this utility model is as follows: a steel reinforcement protective layer spacer for fair-faced concrete beam and slab construction is provided, including a spacer body, the spacer body including a first end and a second end arranged opposite to each other; it also includes a first receiving groove provided at the first end and a second receiving groove provided at the second end, the groove depth of the first receiving groove is different from the groove depth of the second receiving groove.
[0007] Furthermore, the steel reinforcement protective layer pad provided by this utility model for the construction of fair-faced concrete beams and slabs may also have the following features: the pad body further includes a first side and a second side arranged opposite to each other, and both the first side and the second side are provided with hollow grooves for saving materials.
[0008] Furthermore, the steel reinforcement protective layer pad provided by this utility model for the construction of fair-faced concrete beams and slabs may also have the following features: the hollow groove includes four groove walls, and the four groove walls together form the hollow groove; the hollow groove is provided with a reinforcing part for strengthening the structural strength of the pad body, the reinforcing part includes at least one reinforcing plate, and the two ends of the reinforcing plate are respectively connected to two oppositely arranged groove walls.
[0009] Furthermore, the steel reinforcement protective layer pad provided by this utility model for the construction of fair-faced concrete beams and slabs may also have the following feature: the reinforcement part includes two mutually perpendicular and interconnected reinforcement plates.
[0010] Furthermore, the steel reinforcement protective layer pad provided by this utility model for the construction of fair-faced concrete beams and slabs may also have the following feature: the second end is further provided with a third receiving groove, and the groove direction of the third receiving groove is different from the groove direction of the second receiving groove.
[0011] Furthermore, the steel reinforcement protective layer pad provided by this utility model for the construction of fair-faced concrete beams and slabs may also have the following feature: the groove direction of the third receiving groove is perpendicular to the groove direction of the second receiving groove.
[0012] Furthermore, the steel reinforcement protective layer pad provided by this utility model for the construction of fair-faced concrete beams and slabs may also have the following characteristics: the depth of the third receiving groove is different from the depth of the first receiving groove and different from the depth of the second receiving groove.
[0013] Furthermore, the steel reinforcement protective layer pad provided by this utility model for the construction of fair-faced concrete beams and slabs may also have the following characteristics: the width of the third receiving groove is different from the width of the first receiving groove and different from the width of the second receiving groove.
[0014] Furthermore, the steel reinforcement protective layer pad provided by this utility model for the construction of fair-faced concrete beams and slabs may also have the following features: the first receiving groove, the second receiving groove and the third receiving groove are all U-shaped grooves.
[0015] This utility model also provides a building, including the steel reinforcement protective layer spacer for fair-faced concrete beam and slab construction as described above.
[0016] The beneficial effects of this utility model are as follows:
[0017] 1. In this application, by adjusting the different placement methods of the first end of the cushion block body being higher or the second end being higher, the horizontal steel bar is adjusted to be placed in the shallower first accommodating groove or the deeper second accommodating groove, so as to achieve the effect of adjusting the cover thickness, making the utility model applicable to different construction requirements of fair-faced concrete beams and slabs and having good adaptability.
[0018] 2. In order to save the material consumption and reduce the cost input in this application, hollow grooves are opened on both the first side and the second side of the cushion block body. And, in order to ensure that the first accommodating groove or the second accommodating groove can still stably carry the steel bar after the hollow grooves are opened on the cushion block body, a reinforcement part is further provided to reinforce the entire cushion block body.
[0019] 3. In this application, by providing a third accommodating groove with a different depth from the second accommodating groove, it can be applicable when constructing fair-faced concrete with concave-convex texture, and two horizontal steel bars guided in different directions can be placed simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The drawings incorporated into the specification and constituting a part of the specification show the embodiments of the utility model and are used together with the description to explain the principles of the utility model. In these drawings, like reference numerals are used to represent like elements. The drawings in the following description are some embodiments of the utility model, not all embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0021] Figure 1 is the front view of the utility model;
[0022] Figure 2 is the left view of the utility model;
[0023] Figure 3 is the schematic diagram of Application Example 1 of the utility model;
[0024] Figure 4 is the schematic diagram of Application Example 2 of the utility model;
[0025] Figure 5 is the schematic diagram of Application Example 3 of the utility model.
[0026] In the figure:
[0027] 1. Cushion block body; 11. First end; 12. Second end; 13. First side; 14. Second side; 2. First accommodating groove; 3. Second accommodating groove; 4. Third accommodating groove; 5. Hollow groove; 6. Reinforcement plate; 7. Horizontal steel bar. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0028] 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, not all, of the embodiments of this utility model. 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.
[0029] This utility model provides a steel reinforcement protective layer spacer for fair-faced concrete beam and slab construction, with the following specific structure:
[0030] like Figure 1 and Figure 2 As shown, the reinforcement protective layer spacer for fair-faced concrete beam and slab construction includes a spacer body 1, which includes a first end 11 and a second end 12 arranged opposite to each other (to...). Figure 1 Taking the direction shown as an example, the first end 11 is the upper end of the pad body 1, and the second end 12 is the lower end of the pad body 1); it also includes a first receiving groove 2 provided at the first end 11 and a second receiving groove 3 provided at the second end 12, the groove depth of the first receiving groove 2 is different from the groove depth of the second receiving groove 3.
[0031] The first receiving groove 2 can be either deeper or shallower than the second receiving groove 3. In this embodiment, the depth of the first receiving groove 2 is less than the depth of the second receiving groove 3. During use, the horizontal reinforcing bar 7 can be placed in the shallower first receiving groove 2 or the deeper second receiving groove 3 by adjusting the position of the first end 11 or the second end 12, thereby adjusting the protective layer thickness. This allows the invention to be applied to different construction requirements of fair-faced concrete beams and slabs, demonstrating good adaptability.
[0032] Furthermore, this utility model preferably adopts polymer polymerization technology and is formed by molding, which has the advantage of uniform size and avoids the phenomenon of uneven thickness of the protective layer.
[0033] Furthermore, in order to ensure the stability of the pad body 1, the center of the first receiving groove 2 and the center of the second receiving groove 3 are located on the same vertical line as the geometric center of the pad body 1.
[0034] Furthermore, in order to save on material usage and reduce cost input, such as Figure 1 As shown, the pad body 1 also includes a first side 13 and a second side 14 disposed opposite to each other (to... Figure 1 Taking the direction shown as an example, the first side 13 is the front of the pad body 1, and the second side 14 is located on the back of the pad body 1. Figure 1(not shown in the image), the first side 13 and the second side 14 are both located between the first end 11 and the second end 12, and each has a hollowed-out groove 5 for saving material.
[0035] Furthermore, to ensure that the pad block body 1 can still stably support the horizontal reinforcing bar 7 after the hollow groove 5 is formed, the hollow groove 5 includes four groove walls, which together form the hollow groove 5; the hollow groove 5 is provided with a reinforcing part to strengthen the structural strength of the pad block body 1, and the reinforcing part includes at least one reinforcing plate 6, the two ends of which are respectively connected to two opposite groove walls. Further, as... Figure 1 As shown, the reinforcement includes two mutually perpendicular and interconnected reinforcement plates 6, which further ensure the structural strength of the pad block body 1.
[0036] To further increase applicability, such as Figure 2 As shown, the second end 12 is also provided with a third receiving groove 4, which is connected to the second receiving groove 3, and its groove direction is different from that of the second receiving groove 3.
[0037] Furthermore, the slotting direction of the third receiving groove 4 is perpendicular to the slotting direction of the second receiving groove 3, which can be applied to most construction situations.
[0038] Furthermore, the depth of the third receiving groove 4 differs from the depth of the first receiving groove 2 and also differs from the depth of the second receiving groove 3, so that when constructing fair-faced concrete with a textured surface, two horizontal reinforcing bars 7 guided in different directions can be placed simultaneously. The third receiving groove 4 can be deeper or shallower than the second receiving groove 3. In this embodiment, the depth of the third receiving groove 4 is greater than the depth of the second receiving groove 3.
[0039] Furthermore, the width of the third receiving groove 4 is different from the width of the first receiving groove 2 and also different from the width of the second receiving groove 3, so as to accommodate the placement of horizontal reinforcing bars 7 of different diameters. In this embodiment, the width of the third receiving groove 4 is smaller than the width of the second receiving groove 3.
[0040] To ensure that each receiving groove can fit the surface of the horizontal reinforcing bar 7, the first receiving groove 2, the second receiving groove 3 and the third receiving groove 4 are all U-shaped grooves.
[0041] This utility model also provides a building, including the above-mentioned steel reinforcement protective layer pad for fair-faced concrete beam and slab construction.
[0042] To facilitate understanding of how this utility model adjusts the protective layer thickness by changing the different placement of the pad body 1, thus adapting to different construction requirements of fair-faced concrete beams and slabs, application examples are provided below:
[0043] Application Example 1
[0044] like Figure 3 As shown, the pad block body 1 is placed on the bottom formwork of the beam, that is, the first end 11 is located above the pad block body 1 and the second end 12 is located below the pad block body 1. The horizontal steel bar 7 is placed in the first receiving groove 2. This application method is suitable for the construction of fair-faced concrete beams and slabs with a minimum protective layer thickness of a, where a is the distance from the bottom of the first receiving groove 2 to the bottom formwork of the beam.
[0045] Application Example 2
[0046] like Figure 4 As shown, the pad block body 1 is placed upside down on the bottom formwork of the beam (not shown in the figure), that is, the first end 11 is located below the pad block body 1 and the second end 12 is located above the pad block body 1. The horizontal reinforcing bar 7 is placed in the second receiving groove 3. This application method is suitable for the construction of fair-faced concrete beams and slabs with a minimum protective layer thickness of b, where b is the distance from the bottom of the second receiving groove 3 to the bottom formwork of the beam, and b is less than a.
[0047] Application Example 3
[0048] like Figure 4 As shown, the pad block body 1 is placed upside down on the beam bottom formwork, with the first end 11 below the pad block body 1 and the second end 12 above it. The horizontal reinforcing bar 7 is placed in the third receiving groove 4. This application method is suitable for the construction of fair-faced concrete beams and slabs with a minimum protective layer thickness of c, where c is the distance from the bottom of the third receiving groove 4 to the beam bottom formwork, and c is less than b. This application example can also be combined with Application Example 2, where two horizontal reinforcing bars 7 guided in different directions are placed in the second receiving groove 3 and the third receiving groove 4 respectively, to be suitable for the construction of fair-faced concrete slabs with uneven textures, avoiding the occurrence of excessively thin or thick protective layers.
[0049] The above-described contents can be implemented individually or in combination in various ways, and all such variations are within the protection scope of this utility model.
[0050] In the description of this invention, it should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.
[0051] In the description of this invention, it should also be noted that the terms "center," "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for 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 invention. In the description of this invention, unless otherwise stated, "a number" means two or more.
[0052] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific embodiments of the present invention are limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.
Claims
1. A reinforcement protective layer spacer for construction of fair-faced concrete beams and slabs, characterized in that, The device includes a pad body (1), which includes a first end (11) and a second end (12) disposed opposite to each other; it also includes a first receiving groove (2) disposed at the first end (11) and a second receiving groove (3) disposed at the second end (12), wherein the groove depth of the first receiving groove (2) is different from the groove depth of the second receiving groove (3).
2. The reinforcement protective layer spacer for fair-faced concrete beam and slab construction according to claim 1, characterized in that, The pad body (1) also includes a first side (13) and a second side (14) arranged opposite to each other, and both the first side (13) and the second side (14) are provided with hollow grooves (5) for saving materials.
3. The reinforcement protective layer spacer for fair-faced concrete beam and slab construction according to claim 2, characterized in that, The hollow groove (5) includes four groove walls, which together form the hollow groove (5); the hollow groove (5) is provided with a reinforcing part for strengthening the structural strength of the pad body (1), and the reinforcing part includes at least one reinforcing plate (6), the two ends of which are respectively connected to two oppositely arranged groove walls.
4. The reinforcement protective layer spacer for fair-faced concrete beam and slab construction according to claim 3, characterized in that, The reinforcement includes two mutually perpendicular and interconnected reinforcement plates (6).
5. The reinforcement protective layer spacer for fair-faced concrete beam and slab construction according to claim 1, characterized in that, The second end (12) is also provided with a third receiving groove (4), the groove direction of the third receiving groove (4) is different from the groove direction of the second receiving groove (3).
6. The reinforcement protective layer spacer for fair-faced concrete beam and slab construction according to claim 5, characterized in that, The slotting direction of the third receiving groove (4) is perpendicular to the slotting direction of the second receiving groove (3).
7. The reinforcement protective layer spacer for fair-faced concrete beam and slab construction according to claim 5, characterized in that, The depth of the third receiving groove (4) is different from the depth of the first receiving groove (2) and different from the depth of the second receiving groove (3).
8. The reinforcement protective layer spacer for fair-faced concrete beam and slab construction according to claim 5, characterized in that, The width of the third receiving groove (4) is different from the width of the first receiving groove (2) and also different from the width of the second receiving groove (3).
9. The reinforcement protective layer spacer for fair-faced concrete beam and slab construction according to claim 5, characterized in that, The first receiving groove (2), the second receiving groove (3) and the third receiving groove (4) are all U-shaped grooves.
10. A building, characterized in that, Including the steel reinforcement protective layer spacer for fair-faced concrete beam and slab construction as described in any one of claims 1-9.