A precast cement inner bracing strip

Abstract

The utility model relates to support component technical field, concretely is a prefabricated cement inner support strip, including inner support strip main part and two steel bars, the lower surface of inner support strip main part is provided with two clamping teeth, the lower surface of inner support strip main part is set up with the sliding slot. The utility model cement inner support strip prevents the inner support strip from happening lateral deviation and falling when bearing lateral pressure or vibration, improves the concrete pouring quality, the durability aspect guarantees the steel bar protective layer thickness, prolongs the concrete component service life, and the prefabricated inner support strip is mainly composed of inner support strip main part and two clamping teeth, and after the component steel bar binding is completed, the inner support strip is placed in the inboard fixation of two side stress steel bars, and two clamping teeth can guarantee that the inner support strip does not happen lateral deviation or fall, prevent the formwork deviation, and the component thickness is uneven, thereby improving the concrete pouring quality, and the patent increases two "clamping teeth" in the length direction of traditional cement inner support strip, prevents the inner support strip from happening lateral deviation and falling, and improves the concrete pouring quality.

Description

Technical Field

[0001] This utility model relates to the field of support component technology, and in particular to a precast cement internal support strip. Background Technology

[0002] In concrete pouring construction, traditional cement internal bracing is a widely used core support component. It can effectively prevent formwork deformation and displacement during the pouring process, accurately maintain the cross-sectional dimensions of the component, and bond well with the concrete, reducing the risk of cracking later. In the construction of concrete structures such as walls and columns, it plays a key role in ensuring the regularity of the project shape and the stability of the structure.

[0003] Existing technologies often have the following drawbacks: Traditional cement internal bracing bars, as a commonly used support component in concrete pouring, are inexpensive but have significant defects. They are prone to lateral deviation or falling off when subjected to lateral pressure or vibration, leading to formwork displacement, concrete structure deformation, and affecting building quality. In terms of durability, if cement internal bracing bars cannot be kept relatively perpendicular to the formwork, the thickness of the steel reinforcement protective layer cannot be guaranteed, which will accelerate the carbonation rate of the internal steel reinforcement.

[0004] Therefore, this utility model provides a precast cement internal support strip. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of traditional cement internal support strips in the prior art, which are prone to lateral deviation or falling off when subjected to lateral pressure or vibration, and to propose a precast cement internal support strip.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a precast cement inner support strip, comprising an inner support strip body and two reinforcing bars, wherein two locking teeth are provided on the lower surface of the inner support strip body.

[0007] The effect achieved by the above-mentioned components is as follows: This patent adds two "tooth-like" teeth along the length of the traditional cement inner support strip to prevent the inner support strip from deviating or falling off, thereby improving the quality of concrete pouring.

[0008] Preferably, a groove is provided on the lower surface of the inner support bar body, and a slider is slidably connected to the inner side of the groove, and the locking teeth and the lower surface of the slider are fixedly connected.

[0009] The effect achieved by the above components is to ensure that the locking teeth fit tightly against the reinforcing bars, thereby achieving precise adjustment of the locking teeth position and further enhancing the fixing effect on the reinforcing bars.

[0010] Preferably, the slider has a T-shaped structure.

[0011] The effect achieved by the above components is that the slider has a T-shaped structure, which can stably lock in the groove and prevent it from falling off.

[0012] Preferably, the inner support bar body has an internal threaded connection to a drive rod.

[0013] The effect achieved by the above components is that the drive rod is threadedly connected to the inner support bar body, and the rotating drive rod will produce axial movement.

[0014] Preferably, a circular block is fixedly connected to the end of the drive rod, and the circular block and the slider are internally rotatably connected.

[0015] The effect achieved by the above-mentioned components is to push the slider, which is rotatably connected to it via a circular block, to slide within the groove.

[0016] Preferably, a rotating block is fixedly connected to the end of the drive rod away from the circular block.

[0017] The effect achieved by the above components is that the rotating block drives the drive rod to rotate within the inner support bar body.

[0018] Preferably, the cross-section of the locking teeth is a right-angled trapezoid, and the sides of the two locking teeth that are far apart from each other are both inclined surfaces, with the reinforcing bar located between the inclined surfaces of the locking teeth and the inner support bar body.

[0019] The effect achieved by the above components is that, since the cross-section of the locking teeth is a right-angled trapezoid, the side away from each other is an inclined surface, and the steel bars are precisely locked between the inclined surface of the locking teeth and the body of the inner support bar.

[0020] In summary:

[0021] In this invention, the cement inner support strip prevents lateral deviation and fall when subjected to lateral pressure or vibration, thereby improving the quality of concrete pouring. In terms of durability, it ensures the thickness of the reinforcing steel protective layer and extends the service life of concrete components. The precast inner support strip mainly consists of the inner support strip body and two locking teeth. After the component reinforcement is tied, the inner support strip is placed inside the stressed reinforcement on both sides and fixed. The two locking teeth can ensure that the inner support strip does not deviate or fall, prevent formwork displacement and uneven component thickness, thereby improving the quality of concrete pouring. This patent adds two "locking teeth" in the length direction of the traditional cement inner support strip to prevent lateral deviation and fall, thus improving the quality of concrete pouring. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of this utility model from another angle;

[0024] Figure 3 This is a schematic diagram of the structure of the locking teeth in this utility model;

[0025] Figure 4This is a cross-sectional structural diagram of the locking teeth in this utility model.

[0026] Legend: 1. Main body of inner support bar; 2. Reinforcing bar; 3. Clamping teeth; 4. Drive rod; 5. Rotating block; 6. Slide groove; 7. Sliding block; 8. Circular block. Detailed Implementation

[0027] Reference Figures 1-4 As shown, this utility model provides a technical solution: a precast cement inner support bar, including an inner support bar body 1 and two steel bars 2.

[0028] The following is a detailed explanation of its overall setup and function.

[0029] In this implementation scheme: Two locking teeth 3 are provided on the lower surface of the inner support strip body 1. This patent adds two "locking teeth 3" along the length of the traditional cement inner support strip to prevent the inner support strip from deviating or falling off, thereby improving the quality of concrete pouring. A groove 6 is formed on the lower surface of the inner support strip body 1, and a slider 7 is slidably connected to the inner side of the groove 6. The locking teeth 3 and the lower surface of the slider 7 are fixedly connected. Until the locking teeth 3 are tightly fitted with the reinforcing bar 2, the position of the locking teeth 3 can be precisely adjusted, further enhancing the fixing effect on the reinforcing bar 2. The slider 7 has a T-shaped structure. The T-shaped structure of the slider 7 can stably lock in the groove 6 to prevent it from falling off. A drive rod 4 is threadedly connected to the inner support strip body. The drive rod 4 is threadedly connected to the inner support strip body, and the rotation of the drive rod 4 will generate axial movement.

[0030] Specifically, a circular block 8 is fixedly connected to the end of the drive rod 4, and the circular block 8 and the slider 7 are internally rotatably connected. The slider 7, rotatably connected to it via the circular block 8, slides within the groove 6. A rotating block 5 is fixedly connected to the end of the drive rod 4 away from the circular block 8. The rotating block 5 drives the drive rod 4 to rotate within the inner support bar body. The cross-section of the locking teeth 3 is a right-angled trapezoid, and the sides of the two locking teeth 3 that are furthest from each other are inclined planes. The reinforcing bar 2 is located between the inclined plane of the locking teeth 3 and the inner support bar body. Because the cross-section of the locking teeth 3 is a right-angled trapezoid, and the sides that are furthest from each other are inclined planes, the reinforcing bar 2 is precisely wedged between the inclined plane of the locking teeth 3 and the inner support bar body.

[0031] Working principle: Before concrete pouring, the reinforcing steel bars 2 are tied first. Then, the precast cement inner support strip is placed inside the reinforcing steel bars 2 on both sides. At this time, the two locking teeth 3 on the lower surface of the inner support strip body 1 will form a limiting fit with the reinforcing steel bars 2. Since the cross-section of the locking teeth 3 is a right trapezoid, the side away from each other is an inclined surface. The reinforcing steel bars 2 are just locked between the inclined surface of the locking teeth 3 and the inner support strip body. With the limiting effect of the inclined surface, the lateral displacement of the inner support strip in the horizontal direction can be initially avoided. If it is necessary to adjust the position of the locking teeth 3 according to the spacing of the reinforcing steel bars 2, the rotating block 5 at the end of the drive rod 4 can be rotated. The rotating block 5 drives the drive rod 4 to rotate in the inner support strip body. Since the drive rod 4 is threadedly connected to the inner support strip body, the rotating drive rod 4 will generate axial movement, which in turn pushes the slider 7, which is rotatably connected to it through the circular block 8, in the groove 6. The inner sliding mechanism, with its T-shaped structure, allows the slider 7 to be stably locked within the groove 6, preventing it from detaching. As the slider 7 moves, it drives the locking teeth 3 to move synchronously until they are tightly engaged with the reinforcing bar 2. This achieves precise adjustment of the locking teeth 3's position, further enhancing the fixation effect on the reinforcing bar 2. During concrete pouring, when the formwork is subjected to lateral pressure or construction vibration, the inner support bar body 1, through the secure positioning of the locking teeth 3 and the reinforcing bar 2, will not deviate or fall off, maintaining a relatively perpendicular state to the formwork. This not only effectively prevents formwork displacement and ensures accurate cross-sectional dimensions and uniform thickness of the concrete component, but also ensures that the protective layer thickness of the reinforcing bar 2 meets design requirements, reduces the contact between the internal reinforcing bar 2 and the external environment, slows down the carbonation rate of the reinforcing bar 2, and ultimately guarantees the quality of concrete pouring and extends the service life of the concrete component.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A precast concrete inner support strip, comprising an inner support strip body (1) and two reinforcing bars (2), characterized in that: The lower surface of the inner support bar body (1) is provided with two locking teeth (3), and the lower surface of the inner support bar body (1) is provided with a sliding groove (6). A slider (7) is slidably connected to the inner side of the sliding groove (6), and the lower surfaces of the locking teeth (3) and the slider (7) are fixedly connected.

2. The precast concrete internal support strip according to claim 1, characterized in that: The slider (7) has a T-shaped structure.

3. The precast concrete internal support strip according to claim 1, characterized in that: The inner support bar body (1) is internally threaded with a drive rod (4).

4. A precast concrete internal support strip according to claim 3, characterized in that: A circular block (8) is fixedly connected to the end of the drive rod (4), and the circular block (8) and the slider (7) are internally rotatably connected.

5. A precast concrete internal support strip according to claim 3, characterized in that: The drive rod (4) is fixedly connected to a rotating block (5) at the end away from the circular block (8).

6. A precast concrete internal support strip according to claim 1, characterized in that: The cross-section of the tooth (3) is a right trapezoid, and the two teeth (3) are inclined on the side away from each other. The steel bar (2) is located between the inclined surface of the tooth (3) and the inner support bar body.

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