A reinforcing device for beam-column formwork prestressed tendon threading

Abstract

The utility model discloses a kind of reinforcing devices for beam-column formwork prestressed tendon bundle, it is related to building engineering construction auxiliary equipment technical field.The utility model includes main body fixed ring, its inner contour is matched with the appearance of prestressed corrugated pipe, for holding fixed prestressed corrugated pipe;At least three adjustable support rods, one end of adjustable support rod is hinged with the outer wall of main body fixed ring by direction joint bearing;Formwork connecting piece, fixedly connected at the other end of each adjustable support rod, for with the formwork of beam or column is detachably connected.The utility model is supported on formwork by the support rod system of multidirectional adjustable, realizes accurate positioning and firm clamping of prestressed corrugated pipe in beam-column node complex reinforcement environment, effectively prevent the displacement and breakage of corrugated pipe when concrete pouring, guarantee prestressed construction quality.The device is convenient to install and dismount, can be reused, with higher practical value.

Description

Technical Field

[0001] This utility model belongs to the technical field of auxiliary equipment for building construction, and in particular relates to a reinforcement device for the prestressed tendon threading point of beam and column formwork. Background Technology

[0002] In the construction of prestressed concrete structures, the steel reinforcement in the beam-column joint area is extremely dense, and the prestressing tendons need to pass through this area. This presents the following technical challenges: First, the positions of ordinary steel reinforcement (especially column stirrups and longitudinal reinforcement) conflict with the prestressing corrugated pipes, making it difficult to guarantee the design sag of the prestressing tendons. Second, during concrete pouring, the impact of the vibrator and the lateral pressure of the concrete can easily cause the embedded corrugated pipes to shift, deform, or even break. If grout leaks, it will cause blockage of the ducts, preventing subsequent prestressing tensioning and resulting in serious quality accidents and economic losses.

[0003] Currently, welded steel reinforcement supports are commonly used to fix corrugated pipes during construction. However, this method has the following drawbacks: 1) Low positioning accuracy, making it difficult to fix precisely in three-dimensional space; 2) Rigid connections are prone to permanent deformation under impact; 3) Welding operations are cumbersome and may damage the prestressed materials. Therefore, there is an urgent need for a specialized device that can accurately and reliably reinforce prestressed ducts at beam-column joints. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a reinforcement device for the prestressed tendon threading point of beam and column formwork. This device can accurately position and firmly clamp the prestressed corrugated pipe, effectively preventing displacement and damage during concrete pouring.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a reinforcement device for the prestressed tendon passage point in beam-column formwork. The reinforcement device for the prestressed tendon passage point in beam-column formwork includes: A main fixing ring, the inner contour of which matches the shape of the prestressed corrugated pipe, is used to hold and fix the prestressed corrugated pipe. At least three adjustable support rods, one end of which is hinged to the outer wall of the main body fixing ring via a directional joint bearing; The template connector is fixedly connected to the other end of each of the adjustable support rods and is used for detachable connection with the template of the beam or column.

[0006] In one embodiment, the main fixing ring is a split structure consisting of two symmetrical half-rings joined together by connecting bolts.

[0007] In one embodiment, an elastic cushioning layer is adhered to the inner wall of the main body fixing ring, the elastic cushioning layer being made of rubber or silicone material.

[0008] In one embodiment, the adjustable support rod includes two threaded rods and a threaded sleeve that matches the two threaded rods. Both ends of the threaded sleeve are threaded with fastening nuts, and an anti-slip protrusion is provided in the middle of the threaded sleeve.

[0009] In one embodiment, the directional joint bearing includes a bearing housing fixed to the outer wall of the main body fixing ring, a ball bearing disposed in the bearing housing, and a ball rod connected to one end of an adjustable support rod, wherein the bearing housing and the ball bearing cooperate with each other.

[0010] In one embodiment, the template connector is a connecting plate with connecting holes for fixing to the template by screws or nails.

[0011] This utility model has the following beneficial effects: 1. Precise positioning and firm fixation: The corrugated pipe is directly embraced by the main fixing ring and supported and fixed from different directions by multiple adjustable support rods, forming a stable spatial support system that ensures that the prestressed duct does not shift or deform during concrete pouring.

[0012] 2. High adaptability: The length and angle of the adjustable support rod can be flexibly adjusted to adapt to beam and column cross sections of different sizes and complex steel reinforcement layout environments, effectively avoiding ordinary steel reinforcement and solving the problem of limited space at beam and column joints.

[0013] 3. Damage-proof design: The elastic buffer pad inside the main fixing ring can avoid hard contact damage to the bellows wall, while the directional joint bearing provides flexible buffering, which can effectively absorb part of the vibration impact energy.

[0014] 4. Easy installation and disassembly: The split-type main fixing ring makes it easy to install in the pre-tied steel cage, and the formwork connectors allow the entire device to be quickly fixed to the existing formwork system, resulting in high construction efficiency and reusability.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the overall structure of a reinforcement device for the prestressed tendon threading point in beam and column formwork; Figure 2 This is a front view of a reinforcement device used at the prestressed tendon insertion point in beam and column formwork; Figure 3 for Figure 2 Sectional view of AA in the middle; Figure 4 for Figure 3 Enlarged view of section B.

[0018] The attached diagram lists the components represented by each number as follows: 1. Main fixing ring; 101. Half ring; 102. Connecting bolt; 2. Adjustable support rod; 201. Threaded rod; 202. Threaded sleeve; 203. Fastening nut; 204. Anti-slip protrusion; 3. Directional joint bearing; 301. Bearing seat; 302. Ball head bearing; 303. Ball head rod; 4. Template connector; 401. Connecting plate; 402. Connecting hole; 5. Prestressed corrugated pipe; 6. Elastic buffer pad layer. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1 Please see Figures 1-4 As shown, this utility model is a reinforcement device for the prestressed tendon threading point of beam and column formwork, mainly composed of a main fixing ring 1, three adjustable support rods 2 and formwork connectors 4.

[0021] The main fixing ring 1 is composed of two symmetrical semi-rings 101 connected by connecting bolts 102, forming a split circular ring with an inner diameter slightly larger than the outer diameter of the prestressed corrugated pipe 5. A ring of elastic rubber buffer pad 6 is adhered to the inner wall of the main fixing ring 1 to protect the prestressed corrugated pipe 5.

[0022] Three adjustable support rods 2 are evenly distributed along the circumference of the main fixing ring 1. Each adjustable support rod 2 consists of two threaded rods 201 and threaded sleeves 202 that match the two threaded rods 201. Both ends of the threaded sleeve 202 are threaded with fastening nuts 203, and an anti-slip protrusion 204 is provided in the middle of the threaded sleeve 202's circumference. One end of the adjustable support rod 2 is hinged to the outer wall of the main fixing ring 1 via a directional joint bearing 3. The directional joint bearing 3 includes a bearing seat 301 welded to the outer wall of the ring, a ball bearing 302 installed in the bearing seat 301, and a ball rod 303, one end of which mates with the ball bearing 302 and the other end of which connects to the threaded rod 201. This structure allows the adjustable support rod 2 to be adjusted arbitrarily within a certain angle range.

[0023] The template connector 4 is a square connecting plate 401, the middle of which is welded to the other end of the threaded rod 201. The connecting plate 401 has multiple connecting holes 402.

[0024] Example 2 This embodiment describes the installation and use of a reinforcement device for the prestressed tendon insertion point in beam-column formwork: 1. After the ordinary steel reinforcement at the beam-column joint is tied, the prestressed corrugated pipe 5 is initially placed in place.

[0025] 2. Open the two semi-rings 101 and lock them at the design elevation position of the prestressed corrugated pipe 5. Then tighten the connecting bolts 102 so that the main fixing ring 1 hugs the prestressed corrugated pipe 5.

[0026] 3. Based on the on-site reinforcement arrangement and the position of the formwork, adjust the direction and length of the three adjustable support rods 2 respectively (by loosening the fastening nut 203 and then rotating the threaded sleeve 202 to drive the two threaded rods 201 to move closer or further apart), so that the three adjustable support rods 2 are in a stable spatial triangular support state.

[0027] 4. Place the connecting plates 401 at the ends of each adjustable support rod 2 tightly against the inner surface of the template, and use wood screws or steel nails to firmly fix the device to the template through the connecting holes 402.

[0028] 5. Check the stability of the entire device. After confirming that the position of the prestressed corrugated pipe 5 is accurate, the concrete pouring operation can be carried out.

[0029] 6. After the concrete reaches its strength and the formwork is removed, the fixing screws can be removed and the connecting bolt 102 can be loosened to recycle the device for reuse.

[0030] In the description of this specification, references to terms such as "an embodiment," "example," and "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A reinforcement device for the prestressed tendon threading point in beam and column formwork, characterized in that, include: A main fixing ring (1) has an inner contour that matches the shape of the prestressed corrugated pipe (5) and is used to hold and fix the prestressed corrugated pipe (5). At least three adjustable support rods (2), one end of which is hinged to the outer wall of the main body fixing ring (1) via a directional joint bearing (3); The template connector (4) is fixedly connected to the other end of each of the adjustable support rods (2) for detachable connection with the template of the beam or column.

2. The reinforcement device for the prestressed tendon insertion point in beam-column formwork according to claim 1, characterized in that, The main fixing ring (1) is a split structure composed of two symmetrical half rings (101) connected by connecting bolts (102).

3. The reinforcement device for the prestressed tendon insertion point in beam-column formwork according to claim 1, characterized in that, An elastic buffer layer (6) is attached to the inner wall of the main fixing ring (1), and the elastic buffer layer (6) is made of rubber or silicone material.

4. A reinforcement device for the prestressed tendon insertion point in beam-column formwork according to claim 1, characterized in that, The adjustable support rod (2) includes two threaded rods (201) and a threaded sleeve (202) that matches the two threaded rods (201). Both ends of the threaded sleeve (202) are threaded with fastening nuts (203), and the center of the threaded sleeve (202) is provided with anti-slip protrusions (204).

5. A reinforcement device for the prestressed tendon insertion point in beam-column formwork according to claim 1, characterized in that, The directional joint bearing (3) includes a bearing seat (301) fixed to the outer wall of the main body fixing ring (1), a ball bearing (302) disposed in the bearing seat (301), and a ball rod (303) connected to one end of the adjustable support rod (2). The bearing seat (301) and the ball bearing (302) cooperate with each other.

6. A reinforcement device for the prestressed tendon insertion point in beam-column formwork according to claim 1, characterized in that, The template connector (4) is a connecting plate (401) with connecting holes (402) for fixing to the template by screws or nails.

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