CN216042189U

CN216042189U - Cushion block for controlling thickness of concrete protective layer

Info

Publication number: CN216042189U
Application number: CN202122729615.6U
Authority: CN
Inventors: 李正宁; 杨洋; 邱长林
Original assignee: China Metallurgical Construction Engineering Group Co Ltd
Current assignee: China Metallurgical Construction Engineering Group Co Ltd
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-03-15
Anticipated expiration: 2031-11-09

Abstract

The utility model discloses a cushion block for controlling the thickness of a concrete protective layer, which comprises a rectangular flexible gasket, wherein two rows of hard cushion strips are arranged on the front surface or the back surface of the flexible gasket at intervals, each row of hard cushion strips consists of a plurality of hard clamping strips arranged at intervals along the length direction of the flexible gasket, the two rows of hard clamping strips are arranged in a staggered manner, and a clamping gap is formed between every two adjacent rows of hard clamping strips; after the flexible gasket is bent by external force, the clamping gaps of one row of hard clamping strips correspond to the clamping gaps of the other row of hard clamping strips, and the flexible gasket can be clamped in the gaps of the row of hard clamping strips after being pressed down by the external force to form a strip-shaped cushion block.

Description

Cushion block for controlling thickness of concrete protective layer

Technical Field

The utility model relates to the field of building construction, in particular to a cushion block for controlling the thickness of a concrete protective layer.

Background

The concrete protection layer is a part of concrete which plays a role in protecting reinforcing steel bars from being directly exposed in a concrete member. If the concrete protective layer is too thick, cracks are easily generated on the surface of the concrete, the effective height of the section is reduced, and the bending bearing capacity of the section is reduced; if the thickness of the protective layer is missing or too thin, the capability of the concrete structure for preventing moist gas and water from permeating can be reduced, so that the reinforcing steel bars are corroded and expanded to damage the concrete, and in a serious case, the reinforcing steel bars can be exposed on the surface of the concrete, so that the reinforcing steel bars are exposed in the atmosphere or other media to be corroded and rusted.

To ensure that the thickness of the concrete covering is within the design limits, a plurality of spacers are usually provided at intervals on the floor reinforcing bars. Concrete, cement mortar, marble, granite, steel bar heads brushed with anti-rust paint and the like are commonly used as cushion blocks in the prior construction engineering, and the cushion blocks are also more used materials. The cushion block is high in manufacturing cost, needs to be tightly connected with the reinforcing steel bar during positioning, and is not firm enough for fixation.

Disclosure of Invention

Aiming at the defects of the prior art, the technical problems to be solved by the utility model are as follows: how to provide a support intensity height, the cost of manufacture is low, and can effectively control roof beam, the cushion that is used for controlling concrete protective layer thickness of board concrete protective layer thickness.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a cushion block for controlling the thickness of a concrete protective layer is characterized by comprising a rectangular flexible gasket, wherein two rows of hard cushion strips are arranged on the front surface or the back surface of the flexible gasket at intervals, each row of hard cushion strips consists of a plurality of hard clamping strips arranged at intervals along the length direction of the flexible gasket, the two rows of hard clamping strips are arranged in a staggered manner, and a clamping gap is formed between every two adjacent rows of hard clamping strips; after the flexible gasket is bent by external force, the clamping gaps of one row of hard clamping strips correspond to the clamping gaps of the other row of hard clamping strips, and the flexible gasket can be clamped in the clamping gaps of the row of hard clamping strips after being pressed down by the external force to form a strip-shaped cushion block. Like this, during the use, correspond one of them row of stereoplasm filler strip in opposite directions on the flexible gasket earlier, make one-to-one between two rows of stereoplasm card strips and the chucking clearance, then press down, make stereoplasm card strip and chucking clearance cooperate, the chucking is fixed, forms required cushion. When the clamping device is used, the wire clamp which can directly pass through the network cable fixing clamp is clamped on the cushion block, then the clamp nail is nailed into the through hole of the wire clamp fixing column from the outside of the template, the cushion block is fixed on the template, and the clamp nail can be directly taken down when the template is disassembled. After the cushion block is fixed on the template, the cushion block fixing mode can be simplified, and meanwhile, the cushion block is not easy to shift when concrete mortar is poured. When the concrete distribution is carried out, a plurality of cushion blocks can be fixed on the template at intervals, the upper height and the lower height of the cushion blocks are slightly larger than the thickness of the concrete protective layer, the deformation is small after the side pressure of the template, the thickness of the concrete deformed by heavy pressure is consistent with the designed concrete thickness and meets the design requirement, the concrete pouring thickness is ensured to meet the requirement, and the exposed ribs on the surface of the concrete are avoided. The hard clamping strips are arranged at intervals, so that the cushion block has flexibility when not clamped and fastened, and is convenient to fold.

Furthermore, the flexible gasket is made of rubber, and the hard clamping strip is made of plastic. Like this, rubber has certain flexibility, can satisfy the demand of folding, and rubber and plastics all have better corrosion resistance, and life is high.

Furthermore, each hard clamping strip in each row is a cylinder with one end in an arc shape and the other end provided with a concave cavity; the concave cavities of the hard clamping strips are arranged inwards and are positioned on the same side. Like this, stereoplasm card strip bulk strength is high, can play the effect that the cushion supported, and simultaneously, the card is gone into comparatively conveniently between two rows of stereoplasm card strips, and behind the chucking, is mutual interlock form, can effectively ensure whole indeformable behind the chucking, and the stability of cushion is ensured to not pine and take off.

Furthermore, the distance between the central axes of the two rows of hard clamping strips is half of the perimeter of the hard clamping strips. Therefore, after the hard clamping strips are tightly clamped and matched, the flexible gaskets at the side ends are in a tight state, and the overall hardness of the cushion block can be effectively ensured.

Drawings

FIG. 1 is a schematic view showing an expanded structure of a spacer in the embodiment;

FIG. 2 is a schematic view of the embodiment after the cushion block is fastened.

Detailed Description

The utility model is further illustrated with reference to the following figures and examples.

Example (b):

as shown in the figures, the cushion block for controlling the thickness of the concrete protective layer provided by the embodiment comprises a rectangular flexible gasket 1, two rows of hard cushion strips are arranged on the front surface or the back surface of the flexible gasket 1 at intervals, each row of hard cushion strips consists of a plurality of hard clamping strips 2 arranged at intervals along the length direction of the flexible gasket, the two rows of hard clamping strips 2 are arranged in a staggered manner, and a clamping gap 3 is formed between every two adjacent rows of hard clamping strips 2; after the flexible gasket 1 is bent by external force, one row of hard clamping strips 2 correspond to each clamping gap 3 in the other row of hard clamping strips 2, and can be clamped in the clamping gaps of the row of hard clamping strips after being pressed down by the external force to form a strip-shaped cushion block 4.

The flexible gasket 1 is made of rubber, and the hard clamping strip 2 is made of plastic. Each hard clamping strip 2 in each row is a cylinder with one end in an arc shape and the other end provided with a concave cavity; the concave cavities of the hard clamping strips 2 are arranged inwards and are positioned on the same side.

Of course, in the specific implementation process, the hard card strip 2 can also adopt a quadrangular prism.

In this embodiment, the distance between the central axes of the two rows of hard clamping strips 2 is one half of the circumference of the hard clamping strip 2.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and although the present invention has been described in detail by referring to the preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of the present invention can be made without departing from the spirit and scope of the technical solutions, and all the modifications and equivalent substitutions should be covered by the claims of the present invention.

Claims

1. The cushion block for controlling the thickness of the concrete protective layer is characterized by comprising a rectangular flexible gasket (1), wherein two rows of hard cushion strips are arranged on the front surface or the back surface of the flexible gasket (1) at intervals, each row of hard cushion strips consists of a plurality of hard clamping strips (2) arranged at intervals along the length direction of the flexible gasket, the two rows of hard clamping strips (2) are arranged in a staggered manner, and a clamping gap (3) is formed between every two adjacent rows of hard clamping strips (2); after the flexible gasket (1) is bent by external force, one row of hard clamping strips (2) correspond to each clamping gap (3) in the other row of hard clamping strips (2), and can be clamped in the clamping gaps of the row of hard clamping strips after being pressed down by the external force to form a strip-shaped cushion block.

2. A spacer block for controlling the thickness of a concrete cover according to claim 1, characterized in that the flexible spacer (1) is made of rubber and the rigid snap strip (2) is made of plastic.

3. A spacer block for controlling the thickness of a concrete protective layer according to claim 1 or 2, wherein each row of hard clamping strips (2) is a cylinder with an arc-shaped end and a concave cavity at the other end; the concave cavities of the hard clamping strips (2) are arranged inwards and are positioned on the same side.

4. A spacer block for controlling the thickness of a concrete cover according to claim 3, characterized in that the distance between the central axes of the two rows of rigid snap strips (2) is half the circumference of the rigid snap strips (2).