Reinforcement cage positioning device

Abstract

The utility model belongs to the technical field of cast-in-situ bored pile reinforcement cage positioning, and particularly relates to a reinforcement cage positioning device. Comprising a framework, a connecting arc ring, a positioning piece, a supporting piece and a hanging ring. The framework is arranged on the inner side of the connecting arc ring, one side of each supporting piece is welded to the corresponding positioning piece, the other side of each supporting piece is fixed to the connecting arc ring, the positioning pieces are evenly arranged in the circumferential direction of the connecting arc ring at intervals, and the hanging rings are arranged on the outer wall of the connecting arc ring. In the practical application, the reinforcement cage positioning device is additionally arranged at the top of the reinforcement cage, so that the reinforcement cage can be ensured to be in the center of a hole position integrally, the eccentric phenomenon caused by the movement of the reinforcement cage after entering the hole is prevented, the thickness of a concrete protective layer of the cast-in-situ bored pile is ensured, the engineering quality of the cast-in-situ bored pile is improved, and the construction cost is reduced. The device is reasonable in structural design, easy and convenient to install, capable of being repeatedly used and wide in application range.

Description

Technical Field

[0001] The utility model belongs to the technical field of bored cast-in-place pile reinforcement cage positioning, and in particular relates to a reinforcement cage positioning device. Background Art

[0002] In recent years, bored cast-in-place piles have been increasingly used in railway construction, with advantages such as fast pile formation, simple construction operation, and good pile formation quality. Bored cast-in-place piles are piles made by forming pile holes in the foundation through construction machinery and other means, placing steel cages in them, and pouring concrete. However, after the bored piles are formed, there is no positioning device during the lowering of the steel cage, which makes it difficult to ensure the verticality of the steel cage when it is lifted and lowered. The steel cage is often eccentric, resulting in uneven thickness of the bored cast-in-place pile foundation protective layer, poor pile formation quality, and insufficient bearing capacity.

[0003] A bored pile foundation reinforcement cage positioning device with patent application number CN201620403311.7 includes a steel pipe, reinforcing stirrups and a telescopic rod. The central axis of the steel pipe is parallel to the central axis of the main reinforcement of the reinforcement cage. The steel pipe corresponds to the main reinforcement of the reinforcement cage and is arranged at intervals. A plurality of steel pipes are formed around a grid-like cylinder. The reinforcing stirrups are arranged in the grid-like cylinder, and each steel pipe is fixedly connected to the reinforcing stirrups. A plurality of telescopic rods are evenly arranged in the circumferential direction of the reinforcing stirrups, and each telescopic rod is arranged radially outward on the reinforcing stirrups. The telescopic rod includes a nut and a screw rod arranged radially. The nut is sleeved on the screw rod, and the nut is fixedly connected to the reinforcing stirrups. The above device is complicated to install. In actual application, the telescopic rod strength requirement is relatively high, and the device is easily damaged by excessive load. Therefore, it is urgent for those skilled in the art to solve the above technical problems. Utility Model Content

[0004] The technical problem to be solved by the utility model is that in the above-mentioned prior art, the steel cage is often eccentric when positioning it, resulting in uneven thickness of the bored pile foundation protective layer, poor pile quality and insufficient bearing capacity.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A reinforcement cage positioning device is used for positioning the reinforcement cage of bored cast-in-place piles to prevent eccentricity caused by the movement of the reinforcement cage after entering the hole. The device comprises a frame, a connecting arc ring, a positioning piece, a support piece and a lifting ring; the frame is arranged on the inner side of the connecting arc ring, one side of the support piece is welded to the positioning piece, and the other side is fixed to the connecting arc ring, the positioning piece is evenly spaced along the circumferential direction of the connecting arc ring, and the lifting ring is arranged on the outer wall of the connecting arc ring.

[0007] Furthermore, the skeleton is made of steel bars, which are bent into a circle and are fully welded to the inner wall of the connecting arc circle made of steel plates in the vertical direction; the positioning piece, the supporting piece and the lifting ring are all made of steel bars, and the positioning piece, the supporting piece and the lifting ring are fixed by welding.

[0008] The use of steel bars as the main material for the skeleton, positioning parts, supports and lifting rings can ensure that the entire device has sufficient strength and rigidity to withstand various loads during construction. The full weld connection between the skeleton and the connecting arc ring provides additional support, ensuring the structural stability of the entire device. The precise layout of the positioning parts and supports ensures the accurate position of the steel cage in the drilled hole, reduces the possibility of eccentricity, and improves the reliability and safety of the structure. The setting of the lifting ring allows the entire positioning device to be easily lifted and placed into the hole by lifting equipment, simplifying the installation process. The use of welding for fixing makes the connection between the various components tight and not easy to loosen or damage, which increases the durability of the entire device. The use of steel bars and steel plates allows appropriate size adjustment according to different drilling diameters and depths, and is suitable for a variety of construction conditions. Steel bars and steel plates are common building materials, easy to obtain and relatively low in cost, which makes the entire positioning device cost-effective. By fixing the position of the steel cage, safety hazards during construction are reduced and the safety of the construction site is improved.

[0009] Furthermore, the positioning member is a hollow structure, and the diameter of the positioning member is 15 mm larger than the diameter of the main reinforcement of the steel cage.

[0010] The locating piece of the hollow structure can better fit the contour of the main reinforcement of the steel cage, ensure the accurate position of the steel cage in the drilled hole, and thus reduce the occurrence of eccentricity. The diameter of the locating piece is 15mm larger than the diameter of the main reinforcement, which can ensure that there is enough gap between the steel cage and the locating piece, which is convenient for the installation of the steel cage and can reduce the damage caused by friction. The larger gap can reduce the friction between the locating piece and the steel cage, making it easier to adjust the position of the steel cage, while also reducing the potential wear caused by friction. The larger gap makes the locating piece more convenient during installation and removal, reducing construction time and labor costs. Since the installation between the locating piece and the steel cage is easier, the entire construction process can be completed faster, improving work efficiency. The larger gap can also adapt to some minor changes in the diameter of the main reinforcement of the steel cage, making the positioning device more versatile in different projects. Compared with the solid structure, the hollow structure can save a certain amount of material, thereby reducing the manufacturing cost. The design of the hollow structure reduces the weight of the locating piece, making the hoisting operation easier, and is also conducive to improving the safety of construction.

[0011] Furthermore, the length of the support member is consistent with the thickness of the protective layer of the steel cage, and the protective layer is the outer layer of steel bars of the steel cage.

[0012] The length of the support directly determines the thickness of the protective layer, which ensures that after the concrete is poured, the distance between the steel cage and the concrete surface meets the design requirements, thereby meeting the needs of corrosion protection and structural durability. By precisely controlling the thickness of the protective layer, it can ensure that the bond strength between the steel bars and the concrete reaches the best state, thereby improving the stability and bearing capacity of the entire structure. The design of the support length being consistent with the thickness of the protective layer means that construction workers do not need to additionally measure or adjust the thickness of the protective layer when installing the positioning device, which simplifies the construction steps and improves construction efficiency. Since the length of the support has taken the thickness of the protective layer into account, this helps reduce the problem of insufficient or excessive protective layer thickness caused by manual operation errors.

[0013] Furthermore, the supporting members are provided with 5 in total, and the number of the positioning members matches the number of the supporting members.

[0014] Matching the number of locating pieces with the number of supports means that each locating piece has a corresponding support, which ensures that the steel cage is evenly distributed in the borehole and avoids local stress concentration. Each locating piece is supported by a corresponding support, which helps to improve the stability of the entire locating device and ensure that the position of the steel cage in the borehole is accurate. Since the length of the support is consistent with the thickness of the protective layer, each locating piece has a corresponding support, which means that the thickness of the protective layer around the entire steel cage can be evenly and accurately controlled. Matching the number of locating pieces with the number of supports simplifies the construction process. Construction personnel do not need to additionally calculate or adjust the number of supports, but only need to install them according to the predetermined number and position. Since the number of locating pieces matches the number of supports, the time for on-site adjustments can be reduced and the construction progress can be accelerated. The design with matched quantities helps to ensure that all locating pieces are effectively supported, thereby improving the overall quality of construction.

[0015] Furthermore, there are two hanging rings in total.

[0016] Multiple lifting rings can provide multiple lifting points, making lifting more convenient and safer. Especially when lifting large or heavy steel cages, multiple lifting rings can ensure that the steel cage remains balanced during the lifting process. Multiple lifting rings disperse the load during lifting and reduce the force on a single lifting ring, thereby reducing the risk of breaking the lifting ring and improving the safety of lifting. By setting the lifting rings at different positions, it is easier to adjust the position of the steel cage in the hole to ensure that the center position of the steel cage is accurate. Multiple lifting rings can adapt to different lifting equipment and lifting methods, improving construction flexibility. Multiple lifting rings can speed up the lifting process, especially when the position of the steel cage needs to be adjusted multiple times, the positioning work can be completed faster.

[0017] The utility model has the following beneficial effects:

[0018] 1. The utility model ensures the accurate positioning of the steel cage in the drilled hole by setting a positioning piece that matches the diameter of the main reinforcement of the steel cage and a supporting piece that is consistent with the thickness of the protective layer, effectively preventing the eccentricity caused by movement after entering the hole, improving the positioning accuracy of the steel cage, and thus ensuring the overall structural quality of the bored pile;

[0019] 2. The utility model achieves balanced distribution of the steel cage in the drill hole by arranging the positioning pieces at even intervals on the connecting arc circle and ensuring that each positioning piece is supported by a corresponding supporting piece, thereby improving the structural stability of the positioning device, ensuring the stable position of the steel cage during the concrete pouring process, and enhancing the bearing capacity and durability of the final structure;

[0020] 3. The utility model provides multiple lifting rings, which makes the steel cage more balanced and safer during the lifting process, facilitates position adjustment, simplifies the construction process, and improves construction efficiency. The design of multiple lifting rings reduces the risk of damage to the steel cage during the lifting process, and further improves the safety of the construction site. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a top view of the utility model;

[0022] Figure 2 It is a practical application diagram of the utility model;

[0023] Figure 3 yes Figure 1 Enlarged schematic diagram of part A in the middle.

[0024] Among them, 1-skeleton; 2-connecting arc ring; 3-positioning piece; 4-support piece; 5-lifting ring; 6-reinforcement cage. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0026] In the description of the present invention, it should be understood that the terms "left side", "right side", "upper part", "lower part", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second", etc. do not indicate the importance of the components, and therefore cannot be understood as a limitation on the present invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the scope of protection of the present invention.

[0027] Example 1: Reference Figure 1 , Figure 2 and Figure 3 It can be seen that a steel cage positioning device is used to prevent the eccentricity of the steel cage caused by the movement of the steel cage after entering the hole, which leads to the problem of repeated positioning during construction. It includes a skeleton 1, a connecting arc ring 2, a positioning member 3, a support member 4 and a lifting ring 5, wherein the connecting arc ring 2 is made of a steel plate, and the connecting arc ring 2 and the skeleton 1 made of steel bars are adapted in size; by installing a steel cage positioning device on the top of the steel cage 6, it can ensure that the steel cage 6 is in the center of the hole as a whole, and at the same time, it also ensures the thickness of the concrete protective layer of the bored pile, thereby improving the engineering quality of the bored pile. The device has a reasonable structural design, is easy to install, can be used repeatedly, and has a wide range of applications;

[0028] When in use, select a suitable positioning device according to the size of the steel cage 6, check whether all parts of the positioning device are intact, ensure that the lifting ring 5, positioning piece 3, and support piece 4 are in good condition, assemble the frame 1 of the positioning device with the connecting arc ring 2, ensure that the two are firmly connected, install the positioning piece 3 and support piece 4, ensure that the number of positioning pieces matches that of support pieces, and that they are evenly spaced along the circumferential direction of the connecting arc ring 2, confirm that the diameter of the positioning piece 3 is 15mm larger than the diameter of the main reinforcement of the steel cage, ensure that there is enough clearance, check whether the length of the support piece 4 is consistent with the thickness of the protective layer, use the lifting equipment to lift the entire positioning device through the lifting ring 5, place the positioning device steadily on the top of the steel cage, and ensure that the positioning device is aligned with the center of the steel cage. Align the steel cage with the positioning device to the center line of the drill hole, adjust the position of the positioning device to make it consistent with the center line of the drill hole, slowly put the steel cage with the positioning device into the drill hole, and ensure that the position of the steel cage in the drill hole is accurate through the action of the positioning member 3 and the support member 4. If the position of the steel cage needs to be adjusted, the position of the positioning device can be slightly adjusted through the lifting equipment. After the steel cage is positioned, start pouring concrete. During the pouring process, the positioning device helps to maintain the stability of the steel cage and prevent it from moving or eccentricity, ensuring that the concrete evenly fills the drill hole to form a complete bored pile. After the concrete solidifies to a certain extent, the positioning device can be removed. Since the positioning device has a simple and sturdy structure and can be reused, it needs to be carefully taken out and stored for next use.

[0029] Embodiment 2: The difference from Embodiment 1 is that the number of positioning members 3 and supporting members 4 is set to 5, and the number of lifting rings is set to 4, so as to further improve the positioning accuracy and connection accuracy of the reinforcement cage positioning device, and the reinforcement cage 6 is lowered as a whole to the center of the pile hole, and the lifting ring 5 of the reinforcement cage positioning device is firmly fixed to the steel casing or the through-bar by a steel wire rope, which is a working cycle;

[0030] When in use, select a suitable steel cage positioning device according to the size of the steel cage 6, check whether the various components of the steel cage positioning device are intact, ensure that the lifting ring 5, positioning piece 3, support piece 4, etc. are in good condition, assemble the skeleton 1 of the positioning device with the connecting arc ring 2, ensure that the two are firmly connected, weld and install 5 positioning pieces 3 and 5 support pieces 4, ensure that the number of positioning pieces and support pieces matches, and are evenly spaced along the circumferential direction of the connecting arc ring, use lifting equipment to lift the entire steel cage positioning device through 4 lifting rings 5, place the steel cage positioning device steadily on the top of the steel cage 6, and ensure that the positioning device is aligned with the center line of the steel cage 6, adjust the position of the steel cage positioning device to make it consistent with the center line of the drilled hole, and fix it through the 5 positioning pieces 3 and the support The function of part 4 is to ensure that the position of the steel cage 6 in the drilled hole is accurate. If the position of the steel cage 6 needs to be adjusted, the position of the positioning device can be slightly adjusted through the lifting equipment. When the steel cage 6 is positioned, use a wire rope to firmly fix the lifting ring 5 of the positioning device to the steel casing or the through-bar to ensure that the positioning device will not move during the drilling and pouring process. After the steel cage 6 is positioned, concrete pouring begins. During the pouring process, the steel cage positioning device helps to maintain the stability of the steel cage 6 to prevent it from moving or eccentricity, ensuring that the concrete evenly fills the drilled hole to form a complete bored pile. After the concrete solidifies to a certain extent, the steel cage positioning device can be removed. Since the steel cage positioning device has a simple and sturdy structure, it can be reused, which greatly reduces the construction cost.

[0031] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical scheme of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. A reinforcement cage positioning device, used for positioning the reinforcement cage of bored piles to prevent the eccentricity of the reinforcement cage caused by movement after entering the hole, characterized in that: It includes a skeleton, a connecting arc circle, a positioning piece, a supporting piece and a hanging ring; the skeleton is arranged on the inner side of the connecting arc circle, one side of the supporting piece is welded to the positioning piece, and the other side is fixed to the connecting arc circle, the positioning piece is evenly spaced along the circumferential direction of the connecting arc circle, and the hanging ring is arranged on the outer wall of the connecting arc circle.

2. The steel cage positioning device according to claim 1, characterized in that: The frame is made of steel bars, which are bent into a circle and are fully welded to the inner wall of the connecting arc circle made of steel plates in the vertical direction; the positioning piece, the supporting piece and the lifting ring are all made of steel bars, which are fixed by welding.

3. The reinforcement cage positioning device according to claim 2 is characterized in that: The positioning piece is a hollow structure, and the diameter of the positioning piece is 15 mm larger than the diameter of the main reinforcement of the steel cage.

4. The reinforcement cage positioning device according to claim 1, characterized in that: The length of the support member is consistent with the thickness of the protective layer of the steel cage, and the protective layer is the outer layer of steel bars of the steel cage.

5. The reinforcement cage positioning device according to claim 1, characterized in that: A total of five support members are provided, and the number of the positioning members matches the number of the support members.

6. The reinforcement cage positioning device according to claim 1, characterized in that: There are 2 hanging rings in total.

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