A wall column formwork positioner

Abstract

The utility model provides a kind of wall column formwork positioner, belong to the field of construction engineering. It solves the problems of low positioning accuracy, poor universality, easy to cause quality defects and high cost of traditional wall column formwork. It includes mountain nut, screw rod and steel band;Two the mountain nut is symmetrically screwed in the both ends of screw rod, the mountain nut is attached to wall column reinforcement, the ear plate of the mountain nut is connected with the one end of steel band, and a plurality of positioning holes are arranged on the other end, the ear plate of the mountain nut is provided with support stick, and the steel band is connected with support stick through positioning hole. It is mainly used for quickly positioning wall column formwork after wall column reinforcement binding.

Description

Technical Field

[0001] This utility model belongs to the field of building construction, and in particular relates to a wall and column formwork locator. Background Technology

[0002] In the construction of cast-in-place concrete structures, the installation accuracy of the positioning bars at the bottom of the wall and column formwork directly determines the final position and geometric accuracy of the structural components. Traditional construction commonly uses welded column positioning bars, which has significant technical drawbacks: First, welding positioning bars relies entirely on manual alignment. If the welding is not completed aligned with the positioning line, the error is difficult to correct, leading to formwork position deviation and affecting component dimensional accuracy. Furthermore, conventional positioning devices are mostly designed for fixed rebar arrangements and cannot adapt to changes in wall and column cross-sectional dimensions or rebar diameter differences, resulting in poor versatility. Prefabricated positioning tools are usually of fixed dimensions, requiring custom-made molds for new projects, increasing construction costs by more than 30% and reducing efficiency. In addition, as a disposable consumable, the welding process of positioning bars can easily damage the vertical main reinforcement bars of the wall and column, creating quality defects. If drilling and inserting bars is used as an alternative, there is a risk of damaging embedded electrical wiring, making later repairs difficult and severely affecting the quality and schedule of electrical work. Even if pre-embedded rebar is used for welding, although damage to the main reinforcement bars can be avoided, additional labor and material costs are still required, resulting in high economic costs. Utility Model Content

[0003] In view of this, the present invention aims to propose a wall column formwork locator to solve the problems of low positioning accuracy, poor versatility, easy quality defects and high cost of traditional wall column formwork.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a wall column formwork locator, comprising a U-shaped nut, a screw rod, and a steel strip; two U-shaped nuts are symmetrically screwed to both ends of the screw rod, the U-shaped nuts are in contact with the wall column reinforcement, one end of the steel strip is connected to the ear plate of the U-shaped nut, and the other end is provided with multiple positioning holes, the ear plate of the U-shaped nut is provided with a support rod, and the steel strip is connected to the support rod through the positioning holes.

[0005] Furthermore, the lugs on both sides of the mountain-shaped nut have a U-shaped structure.

[0006] Furthermore, the U-shaped structure of the ear plate on one side of the mountain-shaped nut is fitted to the outer wall of the wall column reinforcement.

[0007] Furthermore, the diameter of the positioning hole is larger than the diameter of the support rod.

[0008] Furthermore, the plurality of positioning holes are arranged at equal intervals along the length of the steel strip.

[0009] Furthermore, the screw has threaded sections at both ends with opposite directions of rotation, and the length of the threaded sections is not less than twice the length of the mountain-shaped nut.

[0010] Furthermore, the support rod is vertically welded to the top surface of the ear plate on one side of the mountain-shaped nut.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model uses a bidirectional screw-in U-shaped nut and a screw rod to form an "I" shaped frame, which supports real-time position adjustment during installation. By adjusting the position of the U-shaped nut, the ear plate of the U-shaped nut can be precisely fitted with the wall column reinforcement, completely solving the problem of irreversible positioning deviation of traditional welded positioning reinforcement. After the steel strip is wrapped, it is locked by the buckle between the support rod and the positioning hole. Combined with the screw rod fine adjustment, a dual adjustment mechanism is formed to ensure that the alignment accuracy of the template axis and the edge line meets the construction specification requirements.

[0013] 2. The steel strip of this utility model can freely wind around wall and column steel bars of different diameters. The positioning holes on the steel strip can be adapted to wall and column steel bars of different diameters. After the steel strip winds around the wall and column steel bars, it is fastened and fixed to form a mechanical lock. If the installation is misaligned, it can be disassembled in 3 seconds. Pushing the steel strip upward can release the lock. The standardized mountain-shaped nut and screw can be used through simple assembly and can be applied to various projects without the need for customized special molds.

[0014] 3. This utility model completely replaces the traditional welding or drilling process by using a mechanical connection method where the support rod is embedded in the positioning hole, fundamentally eliminating damage to the wall and column reinforcement. The steel strip winding and locking process does not require contact with the pre-embedded pipelines in the floor slab, avoiding potential damage to the electrical network. Attached Figure Description

[0015] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0016] Fig. 1 This is an axial side view of the wall column formwork locator of the present invention in use.

[0017] Fig. 2 This is a schematic diagram of the wall column formwork locator of this utility model, shown on the axonometric side.

[0018] In the picture:

[0019] 1. Mountain-shaped nut; 2. Screw; 3. Steel strip; 4. Wall and column reinforcement; 5. Support roller. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present utility model can be combined with each other, and the described embodiments are only some embodiments of the present utility model, not all embodiments.

[0021] Detailed implementation method: See Figs. 1-2 This embodiment describes a wall column formwork locator, comprising a U-shaped nut 1, a screw rod 2, and a steel strip 3. Two U-shaped nuts 1 are symmetrically screwed to both ends of the screw rod 2. The U-shaped nuts 1 are in contact with wall column reinforcing bars 4. The wall column reinforcing bars 4 refer to the main load-bearing reinforcing bars configured within the wall and column components of a building structure. They are typically arranged longitudinally along the wall column, located at the edge of the wall column cross-section, and are used to bear vertical loads and resist horizontal forces. Before concrete pouring, they serve as a reference point for formwork positioning. The two U-shaped nuts 1 and the screw rod 2 form an "I"-shaped frame, which is accessed by rotating both ends. The mountain-shaped nut 1 can adjust the width of the frame to accommodate two wall column steel bars 4 with different spacing. The screw 2 is used to provide the initial positioning position, ensuring that both ends of the screw 2 coincide with the edge line of the wall column. One end of the steel strip 3 is connected to the ear plate of the mountain-shaped nut 1, and the other end is provided with multiple positioning holes 6. The ear plate of the mountain-shaped nut 1 is provided with a support rod 5. The steel strip 3 is connected to the support rod 5 through the positioning holes 6. The steel strip 3 is used to provide binding force to fasten the entire frame to the wall column steel bars 4. The steel strip 3 completes the mechanical locking by cooperating with the support rod 5 on the mountain-shaped nut 1 through the positioning holes 6.

[0022] This utility model is applicable to the positioning of wall and column formwork in cast-in-place concrete engineering, especially in the formwork installation stage after the wall and column reinforcement 4 is tied. By rotating the mountain-shaped nut 1, the spacing of the frame can be quickly adjusted to accommodate wall and column reinforcement 4 with any spacing, avoiding the problem of needing to customize different positioning devices for traditional positioning methods. By aligning the two ends of the screw with the edge line of the wall and column, it avoids the risk of errors caused by manual marking or straightedge positioning, which may lead to displacement of the wall and column reinforcement 4 and formwork misalignment. It also solves the problem of irreversible positioning deviation of traditional welded positioning reinforcement. The mechanical locking of the steel strip and the support roller improves the efficiency of use. If the installation is misaligned, it can be disassembled in 3 seconds, and the locking can be released by pushing the steel strip upward. The mountain-shaped nut 1, screw 2 and steel strip 3 are all conventional components, and simple assembly can meet the needs of use.

[0023] The ear plates on both sides of the mountain-shaped nut 1 are U-shaped structures. The U-shaped structure can fit tightly with the surface of the wall column steel bar 4, thereby providing reliable lateral support force.

[0024] The U-shaped structure of the ear plate on one side of the mountain-shaped nut 1 fits against the outer wall of the wall column reinforcement 4. When the steel strip 3 is tightened, the U-shaped structure can evenly distribute the pressure transmitted by the steel strip 3 to the surface of the wall column reinforcement 4, avoiding local stress concentration that could cause deformation of the wall column reinforcement 4 or slippage of the device.

[0025] The diameter of the positioning hole 6 is larger than the diameter of the support rod 5. Before the support rod 5 is inserted into the positioning hole 6 on the steel strip 3, the worker can quickly lock it without precise aiming.

[0026] The multiple positioning holes 6 are arranged at equal intervals along the length of the steel strip 3, and the spacing of the multiple positioning holes 6 is set according to the wall column steel bars 4 of different diameters.

[0027] The screw 2 has threaded sections with opposite directions of rotation at both ends, thereby achieving symmetrical adjustment of the mountain-shaped nuts 1 on both sides. The length of the threaded section is not less than twice the length of the mountain-shaped nut 1, thereby preventing the mountain-shaped nut 1 from detaching from the screw 2.

[0028] The support rod 5 is vertically welded to the top surface of the ear plate on one side of the mountain-shaped nut 1, thereby accurately transmitting the tension of the steel strip 3. When the positioning hole 6 on the steel strip 3 is fitted into the support rod 5, it will be jammed by the vertical support rod 5. After locking, the steel strip 3 cannot slide out laterally.

[0029] The steps for using this utility model are as follows:

[0030] Step 1: Screw the two mountain-shaped nuts 1 into the two ends of the screw 2 respectively to form an "I" shaped frame that can adjust the width. Unfold the steel strip 3 and check whether the positioning holes 6 on the steel strip 3 are deformed or blocked.

[0031] Step 2: Place the screw rod 2 horizontally at the bottom of the wall column steel bar 4 to be positioned, ensuring that the two wall column steel bars 4 are located on the outside of the length direction of the screw rod 2 respectively. Then adjust the position of the two mountain-shaped nuts 1 so that the wall column steel bar 4 fits against the inner wall of the U-shaped structure of the outer ear plate of the mountain-shaped nut 1.

[0032] Step 3: Visually inspect and calibrate with the wall column positioning line to make both ends of the screw 2 coincide with the edge line of the wall column, and wrap the steel strip 3 around the wall column steel bar 4 to form a winding lock;

[0033] Step 4: Tighten the steel band 3, put the positioning hole 6 on the steel band 3 into the support rod 5 on the mountain nut 1, pull the steel band 3 down forcefully to make the support rod 5 lock into the positioning hole, thereby completing the mechanical locking.

[0034] Step 5: If the column formwork is not fully aligned with the building axis, its position can be adjusted at any time by rotating screw 2. The position of the mountain nut 1 is fixed by the steel reinforcement. Screw 2 will generate axial displacement along the thread, and then pull the column formwork as a whole to move through the steel strip 3 until its inner wall boundary coincides with the design edge line of the wall column, thereby controlling the position of the column formwork until the positioning needs of the wall column formwork are met. The column formwork refers to the detachable mold that surrounds the wall column reinforcement 4 on site.

[0035] Step 6: Press the steel strip 3 with your finger to confirm that there is no looseness or displacement. Then check that the support rod 5 is fully embedded in the positioning hole 6 of the steel strip 3. Then you can proceed with the subsequent concrete pouring process.

[0036] The specific embodiments of this utility model disclosed above are merely illustrative of the present utility model. These specific embodiments do not exhaustively describe all details, nor do they limit the utility model to only the described embodiments. 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.

Claims

1. A wall column formwork locator, characterized in that: It includes a mountain-shaped nut (1), a screw rod (2) and a steel strip (3); two mountain-shaped nuts (1) are symmetrically screwed to both ends of the screw rod (2), the mountain-shaped nuts (1) are attached to the wall column reinforcement (4), one end of the steel strip (3) is connected to the ear plate of the mountain-shaped nut (1), and the other end is provided with multiple positioning holes (6). The ear plate of the mountain-shaped nut (1) is provided with a support rod (5), and the steel strip (3) is connected to the support rod (5) through the positioning holes (6).

2. A wall column formwork locator according to claim 1, characterized in that: The lugs on both sides of the mountain-shaped nut (1) have a U-shaped structure.

3. A wall column formwork locator according to claim 2, characterized in that: The U-shaped structure of the ear plate on one side of the mountain-shaped nut (1) fits against the outer wall of the wall column reinforcement (4).

4. A wall column formwork locator according to claim 1, characterized in that: The diameter of the positioning hole (6) is larger than the diameter of the support rod (5).

5. A wall column formwork locator according to claim 1, characterized in that: The multiple positioning holes (6) are arranged at equal intervals along the length of the steel strip (3).

6. A wall column formwork locator according to claim 1, characterized in that: The screw (2) has threaded sections with opposite directions at both ends, and the length of the threaded sections is not less than twice the length of the mountain nut (1).

7. A wall column formwork locator according to claim 1, characterized in that: The support rod (5) is vertically welded to the top surface of the ear plate on one side of the mountain-shaped nut (1).

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