Reinforcing steel bar protective layer cushion block

Abstract

The utility model discloses a reinforcing steel bar protective layer cushion block which comprises a semi-cylindrical first half cushion and a semi-cylindrical second half cushion, a first semi-annular groove is formed in the circumferential wall of the first half cushion, and a first semi-circular hole is formed in the middle of the first half cushion. A second semicircular groove is formed in the circumferential wall of the second half pad, and a second semicircular hole is formed in the middle of the second half pad; the first half pad and the second half pad form a cylindrical pad block, the first semicircular hole and the second semicircular hole form a steel bar containing cavity matched with the steel bar in diameter, the first semicircular groove and the second semicircular groove form an annular hoop groove, and the section of the annular hoop groove is in an arc shape larger than 3 / 4 of the circumference. And a hoop ring is arranged in the annular hoop groove. The cylindrical cushion block is formed after the first half cushion and the second half cushion which are symmetrical in structure are fixed through the shroud ring, the cushion block is simple in structure, the first half cushion and the second half cushion are simple in structure, production can be completed only through one mold in the manufacturing process, the production cost of the half cushions is reduced, and the production efficiency is improved. And moreover, the problem that the convex structure of the half pad is cracked up due to transportation and storage is avoided, and the construction cost can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a steel reinforcement protective layer spacer. Background Technology

[0002] In construction projects, there are frequent situations requiring the pouring of concrete, such as reinforced concrete cover layers. The thickness of the reinforced concrete cover layer is related to the structure's load-bearing capacity, durability, and fire resistance. If the cover layer is too thin, moisture and water can easily seep in; if it is too thick, cracks can easily form. Both of these can cause the reinforcing steel to corrode and expand, thereby damaging the concrete and affecting its use and structural safety. Because a certain distance should be maintained between the cast-in-place reinforcing steel and the outer formwork, it is often necessary to tie a spacer block between the reinforcing steel and the outer formwork at intervals to keep them separated.

[0003] In the prior art, such as the patent with publication number CN107938948A, two irregular semi-circular blocks are connected by mortise and tenon slots and inserts. Regardless of whether the blocks are made of plastic or concrete, the complexity of the corresponding mold structure will increase (different molds need to be set for the two semi-circular blocks), resulting in increased mold opening costs and significantly increased construction costs. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a steel reinforcement protective layer pad. By setting a first half pad and a second half pad with symmetrical structure and fixing them with a hoop, a cylindrical pad is formed. The pad has a simple structure, and the first / second half pad has a simple structure. Moreover, only one mold is needed to complete the production, which reduces the production cost of the half pad. There is no need to worry about the raised structure of the half pad being damaged due to transportation and storage problems, which can reduce construction costs.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A steel reinforcement protective layer pad includes a first half pad and a second half pad in the shape of a semi-cylindrical shape. The first half pad has a first semi-annular groove on its circumferential wall and a first semi-circular hole in the middle of the first half pad.

[0007] The second half pad has a second semi-annular groove on its circumferential wall and a second semi-circular hole in its middle.

[0008] The first half-pad and the second half-pad form a cylindrical pad block, the first semi-circular hole and the second semi-circular hole form a steel bar receiving cavity adapted to the diameter of the steel bar, and the first semi-annular groove and the second semi-annular groove form an annular hoop groove, the cross section of the annular hoop groove is an arc shape greater than 3 / 4 of the circumference.

[0009] The annular groove is provided with a hoop ring.

[0010] Furthermore, the cross-section of the hoop is circular.

[0011] Furthermore, two hoop rings are provided, and the length of the hoop ring is 1 / 4 to 1 / 2 of the circumference of the annular hoop groove.

[0012] Furthermore, the length of the hoop is 1 / 4 of the circumference of the annular hoop groove.

[0013] Furthermore, the first half-pad has two first strip grooves on its circumferential wall, and the second half-pad has two second strip grooves on its circumferential wall. The two first strip grooves and the two second strip grooves are equally arranged on the circumference of the pad block.

[0014] Furthermore, both the first and second half-pads are made of poured concrete.

[0015] Furthermore, the hoop is made of stainless steel.

[0016] The beneficial effects of this utility model are:

[0017] This invention forms a cylindrical pad by setting a first half-pad and a second half-pad with symmetrical structure and fixing them together with a hoop. The pad has a simple structure, and the first / second half-pad has a simple structure. Moreover, only one mold is needed to complete the production, which reduces the production cost of the half-pad. There is no need to worry about the raised structure of the half-pad being damaged due to transportation and storage, which can reduce construction costs. Attached Figure Description

[0018] Figure 1 This is a perspective view of the steel reinforcement protective layer spacer in an embodiment of this utility model;

[0019] Figure 2 This is a top view of the reinforcement protective layer spacer.

[0020] Figure 3 for Figure 2 Sectional view along line AA;

[0021] In the figure, 1 is the first half-pad; 2 is the second half-pad; 3 is the first semi-annular groove; 4 is the first semi-circular hole; 5 is the rebar receiving cavity; 6 is the annular hoop groove; 7 is the hoop ring; and 8 is the first strip groove. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and 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.

[0023] See Figures 1-3 This utility model provides a technical solution:

[0024] Example:

[0025] like Figures 1-3 As shown, a steel reinforcement protective layer pad includes a semi-cylindrical first half pad 1 and a second half pad 2. The first half pad 1 has a first semi-annular groove 3 on its circumferential wall and a first semi-circular hole 4 in the middle of the first half pad 1.

[0026] The second half-pad 2 has a second semi-annular groove on its circumferential wall and a second semi-circular hole in the middle of its center.

[0027] The first half-pad 1 and the second half-pad 2 form a cylindrical pad block, the first semi-circular hole 4 and the second semi-circular hole form a steel bar receiving cavity 5 adapted to the diameter of the steel bar, and the first semi-annular groove 3 and the second semi-annular groove form an annular hoop groove 6. The cross section of the annular hoop groove 6 is an arc shape greater than 3 / 4 of the circumference.

[0028] The annular groove 6 is provided with a hoop ring 7.

[0029] like Figure 3 As shown, the cross-section of the hoop 7 is circular.

[0030] Two hoop rings 7 are provided, and the length of the hoop ring 7 is 1 / 4 to 1 / 2 of the circumference of the annular hoop groove 6. As long as the length of the hoop ring 7 is less than 1 / 2 of the annular hoop groove 6, the hoop ring 7 does not need to be a full circle, thus saving material for the hoop ring 7.

[0031] In this embodiment, the length of the hoop 7 is 1 / 4 of the circumference of the annular hoop groove 6.

[0032] The first half-pad 1 has two first strip grooves 8 on its circumferential wall, and the second half-pad 2 has two second strip grooves on its circumferential wall. The two first strip grooves 8 and the two second strip grooves are equally spaced on the circumference of the pad block. In this arrangement, one first strip groove 8 and one second strip groove form a set of fixing grooves located at both ends of a hoop 7. By setting strip blocks in a set of fixing grooves, the position of the hoop 7 can be fixed, preventing the hoop 7 from moving along the circumference (annular hoop groove 6), thereby ensuring the connection stability of the first half-pad 1 and the second half-pad 2.

[0033] Both the first half-pad 1 and the second half-pad 2 are made of cast concrete. The materials are readily available and inexpensive.

[0034] The hoop 7 is made of stainless steel.

[0035] Working principle: Press the first semicircular hole of the first half pad 1 / second half pad 2 onto the outside of the reinforcing bar. At this time, insert the hoop 7 into the first semi-annular groove 3 / second semi-annular groove and retract the end of the hoop 7 into the first semi-annular groove 3 / second semi-annular groove to avoid the hoop 7 affecting the installation of the second half pad 2 / first half pad 1.

[0036] Then, the second half pad 2 and the first half pad 1 are joined together to form a complete cylindrical pad block. The aforementioned hoop 7 is pushed into the second semi-annular groove / first semi-annular groove 3 of the second half pad 2 and the first half pad 1. At this time, since the cross-section of the annular groove 6 is an arc shape greater than 3 / 4 of the circumference, the hoop 7 cannot be separated from the annular groove 6. The first half pad 1 and the second half pad 2 are connected as a whole under the action of the hoop 7.

[0037] Finally, strip blocks (which can be stones, cement blocks, or wooden boards) that are adapted to the first strip groove 8 and the second strip groove are used to fix the position of the hoop 7, so that the hoop 7 cannot move along the circumference (annular hoop groove 6), thereby ensuring the connection stability of the first half pad 1 and the second half pad 2.

[0038] This invention forms a cylindrical pad by setting a first half-pad and a second half-pad with symmetrical structure and fixing them together with a hoop. The pad has a simple structure, and the first / second half-pad has a simple structure. Moreover, only one mold is needed to complete the production, which reduces the production cost of the half-pad. There is no need to worry about the raised structure of the half-pad being damaged due to transportation and storage, which can reduce construction costs.

[0039] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A steel reinforcement protective layer spacer, characterized in that: It includes a first half-pad and a second half-pad that are semi-cylindrical in shape. The first half-pad has a first semi-annular groove on its circumferential wall and a first semi-circular hole in its middle. The second half pad has a second semi-annular groove on its circumferential wall and a second semi-circular hole in its middle. The first half-pad and the second half-pad form a cylindrical pad block, the first semi-circular hole and the second semi-circular hole form a steel bar receiving cavity adapted to the diameter of the steel bar, and the first semi-annular groove and the second semi-annular groove form an annular hoop groove, the cross section of the annular hoop groove is an arc shape greater than 3 / 4 of the circumference. The annular groove is provided with a hoop ring.

2. The steel reinforcement protective layer spacer according to claim 1, characterized in that: The cross-section of the hoop is circular.

3. The steel reinforcement protective layer spacer according to claim 2, characterized in that: Two hoop rings are provided, and the length of the hoop ring is 1 / 4 to 1 / 2 of the circumference of the annular hoop groove.

4. The steel reinforcement protective layer spacer according to claim 3, characterized in that: The length of the hoop is 1 / 4 of the circumference of the annular groove.

5. The steel reinforcement protective layer spacer according to claim 4, characterized in that: The first half-pad has two first strip grooves on its circumferential wall, and the second half-pad has two second strip grooves on its circumferential wall. The two first strip grooves and the two second strip grooves are equally arranged on the circumference of the pad block.

6. The steel reinforcement protective layer spacer according to claim 1, characterized in that: Both the first and second half pads are made of concrete.

7. The steel reinforcement protective layer spacer according to claim 6, characterized in that: The hoop is made of stainless steel.

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