Split bolt for reinforcing prefabricated caisson formwork

Abstract

The utility model discloses a split bolt for reinforcing a prefabricated caisson template, which comprises a caisson template, a plurality of groups of mounting holes are arranged on the caisson template, and a split bolt is respectively arranged in each mounting hole. The split bolt comprises a bolt column body and a connecting screw rod, wherein the bolt column body is detachably connected with the connecting screw rod. According to the split bolt, the split bolt composed of the bolt column body and the connecting screw rod is adopted, the bolt column body and the connecting screw rod are detachably connected, and due to the design, the bolt column body and the connecting screw rod can be separated after a template is removed, so that the tedious step of cutting the bolt in a traditional method is avoided, the bolt is recycled, and the production cost is reduced; through the positioning disc arranged in the middle of the bolt cylinder and the scale values on the two sides of the bolt cylinder, a clear distance measuring and positioning tool is provided for workers, it is ensured that formworks on the two sides are evenly stressed, the flatness of the prefabricated caisson is improved, the construction efficiency and quality are greatly improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction engineering, and relates to a tie bolt, in particular to a tie bolt for reinforcing the formwork of a precast caisson. Background Technique

[0002] Caisson structures, with their excellent firmness, durability, integrity, and strong adaptability to load changes, play a crucial role in infrastructure construction such as docks and breakwaters. However, during the construction process of caisson pouring, the reinforcement of the formwork is a key step, which is directly related to the final quality of the caisson structure. In this link, the tie bolt plays a vital role. It not only has to bear the lateral pressure of the concrete and various other loads, but also ensure that the distance between the inner and outer formworks meets strict design requirements.

[0003] However, the existing tie bolts have exposed some deficiencies in practical applications:

[0004] Firstly, the existing tie bolts generally lack a distance measuring mechanism, resulting in workers having to rely on experience for adjustment during operation, making it difficult to ensure uniform stress on both sides of the formwork, which often leads to poor flatness of the precast caisson poured, bringing unnecessary trouble to subsequent construction;

[0005] Secondly, after the formwork is removed, the existing tie bolts usually need to cut off the part extending outside the concrete wall columns, which not only increases the construction difficulty but also causes the bolts to be unable to be reused, thus greatly increasing the production cost. Content of the Utility Model

[0006] The purpose of the utility model is to provide a tie bolt for reinforcing the formwork of a precast caisson to solve the problems raised in the above background technique.

[0007] The utility model solves its technical problems through the following technical solutions:

[0008] A tie bolt for reinforcing the formwork of a precast caisson includes a caisson formwork, and a number of groups of installation holes are provided on the caisson formwork, and a tie bolt is respectively arranged in each installation hole; reinforcing ribs are symmetrically arranged on both sides of the installation holes, and the reinforcing ribs are vertically arranged on the outer side wall of the caisson formwork; the tie bolt includes a bolt column body and a connecting screw rod, and the bolt column body and the connecting screw rod are detachably connected; two positioning support blocks are symmetrically installed at both ends of the bolt column body, and each positioning support block is movably connected to the bolt column body; a positioning screw rod is provided on the side of the positioning support block away from the bolt column body, and the positioning screw rod is connected to the connecting screw rod; a positioning disc is provided in the middle of the bolt column body, and scale values are symmetrically provided on the bolt column body on both sides of the positioning disc.

[0009] Preferably, a limiting groove is formed on one side of the positioning support block close to the bolt cylinder, and the top end of the bolt cylinder is arranged in the limiting groove.

[0010] Preferably, a spring is arranged in the limiting groove, one end of the spring is fixedly connected with the bottom of the limiting groove, and the other end of the spring is fixedly connected with the top end of the bolt cylinder.

[0011] Preferably, a limiting ring is arranged on the outer wall of the top end of the bolt cylinder, and the outer diameter of the limiting ring is adapted to the inner diameter of the limiting groove.

[0012] Preferably, a conical plug is sleeved on the outer wall of the positioning screw, and the maximum outer diameter of the conical plug is equivalent to the aperture of the installation hole.

[0013] Preferably, the top end of the connecting screw is arranged in the installation hole, and an internal thread hole is formed in the top end of the connecting screw; the internal thread hole is adapted to the positioning screw, and the positioning screw is arranged in the internal thread hole and is in threaded connection with it.

[0014] Preferably, an external thread is arranged on the outer wall of the connecting screw, and a wing nut is in threaded connection with the outer wall of the connecting screw.

[0015] Preferably, a rubber cushion plate is sleeved on the outer wall of the connecting screw, one side of the rubber cushion plate abuts against the wing nut, and the other side of the rubber cushion plate abuts against the reinforcing rib.

[0016] The advantages and beneficial effects of the present utility model are as follows:

[0017] The present utility model adopts a tension bolt composed of a bolt cylinder and a connecting screw, and the connection between the two is detachable. This design enables the bolt cylinder and the connecting screw to be separated after the formwork is removed, thus avoiding the cumbersome steps of cutting bolts in the traditional method, realizing the reuse of bolts, and reducing the production cost; by arranging a limiting groove and a spring on the positioning support block, the bolt cylinder can be limited and buffered to prevent the bolt cylinder from shifting or shaking during construction, further improving the construction quality; the setting of the conical plug can tightly fill the installation hole to prevent concrete from flowing into the hole, and at the same time, the rubber cushion plate can provide buffering between the connecting screw and the formwork to prevent the formwork from being damaged and enhance the tightness of the connection; the positioning disc arranged in the middle of the bolt cylinder and the scale values on both sides thereof provide a clear distance measurement and positioning tool for the staff. By reading the scale values, the staff can ensure that the formworks on both sides are evenly stressed, improve the flatness of the precast caisson, and effectively solve the problems existing in the prior art, improve the construction efficiency and quality, reduce the production cost, have strong practicability, and have a broad market prospect. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of the tension bolt of the present utility model;

[0019] Figure 2 is a schematic structural view of the tie bolt of the present utility model connected to the caisson formwork;

[0020] Figure 3 is a schematic structural view of the bolt cylinder body of the present utility model;

[0021] Figure 4 is a schematic structural view of the connecting screw rod of the present utility model.

[0022] Wherein: 1. Caisson formwork; 2. Installation hole; 3. Tie bolt; 301. Bolt cylinder body; 302. Connecting screw rod; 4. Reinforcing rib; 5. Positioning support block; 6. Positioning screw rod; 7. Limit groove; 8. Spring; 9. Limit ring; 10. Rubber sealing ring; 11. Tapered plug; 12. Internal thread hole; 13. External thread; 14. Wing nut; 15. Rubber backing plate; 16. Positioning disc; 17. Scale value. Specific implementation manners

[0023] The present utility model will be further described in detail below through specific embodiments. The following embodiments are only descriptive and not restrictive, and the protection scope of the present utility model cannot be limited thereby.

[0024] Please refer to Figures 1 to 4 For achieving the above object, the present utility model provides the following technical solutions:

[0025] A tie bolt for precast caisson formwork reinforcement, including a caisson formwork 1, which is the basic structure of the precast caisson, and is provided with a plurality of groups of installation holes 2 for installing the tie bolt 3; the installation holes 2 are accurately opened on the caisson formwork 1 according to the size and quantity of the tie bolt 3, and each installation hole 2 is provided with a tie bolt 3; reinforcing ribs 4 are symmetrically arranged on both sides of the installation holes 2, wherein the reinforcing ribs 4 are vertically arranged on the outer side wall of the caisson formwork 1, and the reinforcing ribs 4 are mainly used to enhance the strength and stability of the caisson formwork 1;

[0026] The tie bolt 3 includes a bolt cylinder body 301 arranged inside the caisson formwork 1 and a connecting screw rod 302 arranged outside the caisson formwork 1, wherein the bolt cylinder body 301 and the connecting screw rod 302 are detachably connected; the bolt cylinder body 301 is arranged inside the caisson formwork 1 to be in close contact with the inner side of the caisson formwork 1 and provide support, the connecting screw rod 302 is arranged outside the caisson formwork 1 and is connected to the bolt cylinder body 301, and the two adopt a detachable design, which is convenient for repeated use after the caisson formwork 1 is removed.

[0027] Please refer to Figure 3, as an embodiment of the present utility model, two positioning support blocks 5 are symmetrically installed at both ends of the bolt cylinder 301. The two positioning support blocks 5 have the same structure, and each positioning support block 5 is movably connected to the bolt cylinder 301; a positioning screw 6 is provided on the side of the positioning support block 5 away from the bolt cylinder 301, and the positioning screw 6 is connected to the connecting screw 302; a limiting groove 7 is formed on the side of the positioning support block 5 close to the bolt cylinder 301, and the top end of the bolt cylinder 301 is arranged in the limiting groove 7.

[0028] In the above solution, in order to ensure that the tension bolt 3 can be stably installed in the caisson formwork 1 and withstand the lateral pressure and other loads from the concrete, two positioning support blocks 5 are symmetrically installed at both ends of the bolt cylinder 301. The two positioning support blocks 5 are movably connected to the bolt cylinder 301, allowing fine adjustment when needed while ensuring the stability of the connection; a limiting groove 7 is formed on the side of the positioning support block 5 close to the bolt cylinder 301, and the size of the limiting groove 7 matches the top end of the bolt cylinder 301. The top end of the bolt cylinder 301 is placed in the limiting groove 7. Through the constraint of the limiting groove 7, the position of the bolt cylinder 301 inside the caisson formwork 1 is fixed, preventing it from shifting or shaking during use; a positioning screw 6 is provided on the side of the positioning support block 5 away from the bolt cylinder 301. The function of the positioning screw 6 is to connect the positioning support block 5 to the connecting screw 302, thereby tightly connecting the inner and outer parts of the tension bolt 3. By rotating the connecting screw 302, fine adjustment of the overall length of the tension bolt 3 can be achieved to meet the requirements of different spacings of the caisson formwork 1.

[0029] During installation, first place the bolt cylinder 301 inside the caisson formwork 1 and insert the positioning screw 6 into the installation hole 2, so that the positioning support blocks 5 provided at both ends of the bolt cylinder 301 are in contact with the inner side of the caisson formwork 1; then insert the connecting screw 302 into the installation hole 2 from the outside of the caisson formwork 1 and connect it to the positioning screw 6. By rotating the connecting screw 302 to make it tightly connected to the positioning screw 6, the fixation of the tension bolt 3 is achieved. During use, the tension bolt 3 withstands the lateral pressure and other loads from the concrete. Through the constraints of the positioning support block 5 and the positioning screw 6, it is ensured that the position of the bolt cylinder 301 inside the caisson formwork 1 remains stable. At the same time, the connection method between the positioning screw 6 and the connecting screw 302 also ensures the overall stability of the tension bolt 3; when the caisson formwork 1 is removed, just unscrew the connecting screw 302 from the positioning screw 6 to separate the inner and outer parts, facilitating the reuse of the connecting screw 302. This design not only improves the stability and service life of the tension bolt 3, but also reduces the construction cost and maintenance cost, having important practical value and application prospects.

[0030] Please refer to Figure 3, as an embodiment of the present utility model, a spring 8 is provided in the limiting groove 7, wherein one end of the spring 8 is fixedly connected to the bottom of the limiting groove 7, and the other end of the spring 8 is fixedly connected to the top end of the bolt cylinder 301; a limiting ring 9 is provided on the outer wall of the top end of the bolt cylinder 301, wherein the outer diameter of the limiting ring 9 is adapted to the inner diameter of the limiting groove 7; a rubber sealing ring 10 is provided on the inner wall of the notch of the limiting groove 7, wherein the rubber sealing ring 10 is sealingly connected to the bolt cylinder 301.

[0031] In the above-mentioned solution, by providing a spring 8 in the limiting groove 7, wherein one end of the spring 8 is fixedly connected to the bottom of the limiting groove 7, and the other end of the spring 8 is fixedly connected to the top end of the bolt cylinder 301; the addition of the spring 8 enables the bolt cylinder 301 to have a certain elasticity in the limiting groove 7, and can absorb and buffer the external impact force or vibration to a certain extent, thereby protecting the bolt cylinder 301 from damage; by designing a limiting ring 9 on the outer wall of the top end of the bolt cylinder 301, the outer diameter of the limiting ring 9 is adapted to the inner diameter of the limiting groove 7, so that the limiting ring 9 can be tightly embedded in the limiting groove 7, and the function of the limiting ring 9 is to further fix the position of the bolt cylinder 301 in the limiting groove 7 and prevent it from shaking or shifting; by providing a rubber sealing ring 10 on the inner wall of the notch of the limiting groove 7, the rubber sealing ring 10 forms a sealing connection with the bolt cylinder 301, effectively preventing impurities such as dust and moisture from entering the limiting groove 7, thereby ensuring the cleanliness and dryness between the bolt cylinder 301 and the positioning support block 5; at the same time, the rubber sealing ring 10 also has a certain buffering effect, which can further reduce the friction and wear of the bolt cylinder 301 in the limiting groove 7; by adding components such as the spring 8, the limiting ring 9 and the rubber sealing ring 10, the connection stability and sealing performance between the bolt cylinder 301 and the positioning support block 5 are further improved. At the same time, these components can also effectively absorb and buffer the impact force or vibration and protect the bolt cylinder 301 from damage. This design has a wide application prospect in occasions where high-precision positioning and sealing requirements are needed.

[0032] Please refer to Figure 3 , as an embodiment of the present utility model, a conical plug 11 is sleeved on the outer wall of the positioning screw 6, wherein the maximum outer diameter of the conical plug 11 is equivalent to the aperture of the mounting hole 2.

[0033] In the above-described solution, the conical plug 11 is a component sleeved on the positioning screw 6, and its shape is conical, that is, one end has a smaller diameter and the other end has a larger diameter. The maximum outer diameter of the conical plug 11 is designed to be equivalent to the aperture of the mounting hole 2. Such a design enables the conical plug 11 to closely fit at the orifice of the mounting hole 2, forming an effective seal and fixation. When the positioning screw 6 is inserted into the mounting hole 2, the conical plug 11 sleeved on the positioning screw 6, its larger diameter end will gradually approach and finally reach the orifice of the mounting hole 2. When the maximum outer diameter of the conical plug 11 is exactly matched with the aperture of the mounting hole 2, it will closely fit at the orifice position of the mounting hole 2, forming a sealed and fixed structure, effectively preventing impurities such as dust and moisture from entering the interior of the mounting hole 2 and keeping the interior clean and dry. The conical plug 11 is used in cooperation with the positioning screw 6, which not only increases the stability of the bolt column 301 in the caisson formwork 1, but also prevents the positioning screw 6 from loosening or falling off during use. Moreover, the installation and disassembly of the conical plug 11 are relatively simple, without the need to use complex tools or equipment, reducing the operation difficulty and cost.

[0034] Please refer to Figure 4 , as an embodiment of the present utility model, the top end of the connecting screw 302 is arranged in the mounting hole 2, and an internal threaded hole 12 is provided on the top end surface of the connecting screw 302; the internal threaded hole 12 is adapted to the positioning screw 6, and the positioning screw 6 is arranged in the internal threaded hole 12 and is threadedly connected thereto; an external thread 13 is provided on the outer wall of the connecting screw 302, and a wing nut 14 is threadedly connected to the outer wall of the connecting screw 302; a rubber cushion plate 15 is sleeved on the outer wall of the connecting screw 302, one side of the rubber cushion plate 15 abuts against the wing nut 14, and the other side of the rubber cushion plate 15 abuts against the reinforcing rib 4.

[0035] In the above-described solution, an internal threaded hole 12 is provided on the top surface of the connecting screw rod 302. This internal threaded hole 12 is used for screwing connection with the positioning screw rod 6. The wing nut 14 is screwed onto the outer wall of the connecting screw rod 302. This wing nut 14 is used to provide additional fastening force to ensure the stability and safety of the connecting screw rod 302. The rubber cushion plate 15 is sleeved on the outer wall of the connecting screw rod 302. This rubber cushion plate 15 is located between the wing nut 14 and the reinforcing rib 4 to provide a buffering effect. During installation, first insert the top end of the connecting screw rod 302 into the predetermined installation hole 2, and then rotate the connecting screw rod 302 to screw the positioning screw rod 6 into the internal threaded hole 12 at the top end of the connecting screw rod 302 to ensure a tight screw connection between them. This step is to ensure the stable position of the connecting screw rod 302 in the installation hole 2. Then tighten the wing nut 14 to further fix the connecting screw rod 302 and provide a fastening force to the caisson formwork 1. The rubber cushion plate 15 provided between the wing nut 14 and the reinforcing rib 4 plays a buffering role to reduce vibration and noise. By the combined use of the connecting screw rod 302, the positioning screw rod 6, and the wing nut 14, the stable position of the connecting screw rod 302 in the installation hole 2 can be ensured, preventing it from loosening or moving. The wing nut 14 provides additional fastening force, which can further ensure the stability of the connecting screw rod 302, thereby realizing a stable, reliable and relatively buffered tie bolt 3 structure, greatly improving the construction efficiency and quality.

[0036] Please refer to Figure 3 , as an embodiment of the present utility model, a positioning disk 16 is provided in the middle of the bolt column body 301, and scale values 17 are symmetrically provided on both sides of the positioning disk 16.

[0037] In the above-described solution, the positioning disk 16 is a key component in the middle of the bolt column body 301. Its shape and size are designed according to specific usage scenarios. The main function of the positioning disk 16 is to provide a fixed reference point so that the position of the bolt column body 301 can be accurately positioned during the installation process. Scale values 17 are symmetrically arranged on both sides of the positioning disk 16. These scale values 17 usually adopt marks that are easy to read, such as numbers, lines, or color changes, etc. The setting of the scale values 17 enables the staff to intuitively understand the position of the bolt column body 301 relative to the positioning disk 16, thereby realizing precise control of the position of the tie bolt 3, facilitating the staff to complete the installation work more quickly, improving work efficiency. In practical applications, this design can be customized and optimized according to specific requirements to meet the usage requirements in different scenarios.

[0038] Although embodiments and drawings of the present utility model are disclosed for illustrative purposes, those skilled in the art can understand that various substitutions, changes, and modifications are possible without departing from the spirit and scope of the present utility model and the appended claims. Therefore, the scope of the present utility model is not limited to the content disclosed in the embodiments and drawings.

Claims

1. A tension bolt for precast caisson formwork reinforcement, comprising a caisson formwork (1), wherein a number of groups of mounting holes (2) are formed in the caisson formwork (1), and a tension bolt (3) is respectively arranged in each mounting hole (2). Reinforcing ribs (4) are symmetrically arranged on both sides of the mounting hole (2), and the reinforcing ribs (4) are vertically arranged on the outer side wall of the caisson formwork (1), characterized in that, The tie bolt (3) includes a bolt cylinder (301) and a connecting screw (302), wherein the bolt cylinder (301) and the connecting screw (302) are detachably connected; two positioning support blocks (5) are symmetrically installed at both ends of the bolt cylinder (301), and each positioning support block (5) is movably connected to the bolt cylinder (301); a positioning screw (6) is provided on the side of the positioning support block (5) away from the bolt cylinder (301), and the positioning screw (6) is connected to the connecting screw (302); a positioning disc (16) is provided in the middle of the bolt cylinder (301), and scale values (17) are symmetrically provided on both sides of the positioning disc (16).

2. The tie bolt for precast caisson formwork reinforcement according to claim 1, wherein, A limiting groove (7) is formed on the side of the positioning support block (5) close to the bolt cylinder (301), and the top end of the bolt cylinder (301) is arranged in the limiting groove (7).

3. The tension bolt for precast caisson formwork reinforcement according to claim 2, characterized in that, A spring (8) is arranged in the limiting groove (7), one end of the spring (8) is fixedly connected to the bottom of the limiting groove (7), and the other end of the spring (8) is fixedly connected to the top end of the bolt cylinder (301).

4. The tension bolt for precast caisson formwork reinforcement according to claim 3, characterized in that, A limiting ring (9) is arranged on the outer wall of the top end of the bolt cylinder (301), and the outer diameter of the limiting ring (9) is adapted to the inner diameter of the limiting groove (7).

5. The tension bolt for precast caisson formwork reinforcement according to claim 1, characterized in that, A tapered plug (11) is sleeved on the outer wall of the positioning screw (6), and the maximum outer diameter of the tapered plug (11) is adapted to the aperture of the mounting hole (2).

6. The tension bolt for precast caisson formwork reinforcement according to claim 1, characterized in that, The top end of the connecting screw (302) is arranged in the mounting hole (2), and an internal thread hole (12) is formed at the top end of the connecting screw (302); the internal thread hole (12) is adapted to the positioning screw (6), and the positioning screw (6) is arranged in the internal thread hole (12) and is threadedly connected thereto.

7. The tie bolt for precast caisson formwork reinforcement according to claim 6, characterized in that, External threads (13) are provided on the outer wall of the connecting screw (302), and a wing nut (14) is threadedly connected to the outer wall of the connecting screw (302).

8. The tension bolt for precast caisson formwork reinforcement according to claim 7, characterized in that, A rubber cushion plate (15) is sleeved on the outer wall of the connecting screw (302), one side of the rubber cushion plate (15) abuts against the wing nut (14), and the other side of the rubber cushion plate (15) abuts against the reinforcing rib (4).

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