Anti-loosening device used during hoisting and lowering of reinforcement cage

Abstract

The utility model discloses an anti-loosening device during hoisting and lowering of a reinforcement cage, which belongs to the technical field of reinforced concrete cast-in-place pile construction and comprises a spiral stirrup, a main reinforcement is fixedly mounted on the inner wall of the spiral stirrup, a thread is arranged outside the main reinforcement, an anti-loosening component is arranged outside the main reinforcement, and the anti-loosening component is fixedly mounted on the inner wall of the spiral stirrup. A positioning assembly is arranged above the anti-falling assembly; according to the steel reinforcement cage lifting device, due to the arrangement of the anti-falling assembly, when the device is applied and the steel reinforcement cage needs to be lifted, through the design, the functions that the load capable of being borne by a first reinforcing rib is added in the lifting and lowering process of the steel reinforcement cage through the lifting hook, and the integrity, stability and safety of the steel reinforcement cage are guaranteed are achieved; and meanwhile, the lifting hook can be conveniently disassembled and assembled, use next time is facilitated, resource waste is avoided, the construction cost is reduced, use is easy and convenient, and practicability is high.

Description

Technical Field

[0001] This utility model belongs to the field of reinforced concrete cast-in-place pile construction technology, and in particular relates to an anti-loosening device during the lifting and lowering of steel cages. Background Technology

[0002] As the infrastructure environment becomes increasingly complex, the number of projects involving crossing mountains and rivers is gradually increasing. The quality of bridge pile foundation construction directly determines the durability, stability, and safety of the overall bridge structure. In the construction of bridge pile foundations, it is usually necessary to place the steel cage into the steel casing of the bridge pile foundation and then pour concrete into the steel casing.

[0003] Most existing steel reinforcement cages consist of only three parts: main bars, reinforcing bars, and spiral stirrups. During the lifting and lowering of the steel reinforcement cage into the pile hole, the hook is fixed to the first reinforcing bar below the top of the cage, making the first reinforcing bar bear the weight of the entire steel reinforcement cage. If the welding quality of the steel reinforcement cage is poor or the diameter of the reinforcing bar is too small to bear the weight of the entire steel reinforcement cage, the first reinforcing bar will detach from the steel reinforcement cage, causing the steel reinforcement cage to tip over or fall into the pile hole, resulting in personal injury, economic losses, and delays in construction. To solve the above problems, there is an urgent need for an anti-loosening device for lifting and lowering steel reinforcement cages. Utility Model Content

[0004] The purpose of this utility model is to address the problem that most existing steel reinforcement cages consist only of main bars, reinforcing bars, and spiral stirrups. During the lifting and lowering of the steel reinforcement cage into the pile hole, the hook is fixed to the first reinforcing bar below the top of the cage, making the first reinforcing bar bear the weight of the entire cage. If the welding quality of the steel reinforcement cage is poor or the diameter of the reinforcing bar is too small to support the weight of the entire cage, the first reinforcing bar will detach from the cage, causing the cage to tip over or fall into the pile hole, resulting in personal injury, economic losses, and construction delays. Therefore, this utility model proposes an anti-loosening device for lifting and lowering steel reinforcement cages.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a device for preventing loosening during the lifting and lowering of a steel cage, comprising a spiral stirrup, a main bar fixedly installed on the inner wall of the spiral stirrup, a threaded surface on the outside of the main bar, an anti-loosening component on the outside of the main bar, and a positioning component above the anti-loosening component.

[0006] The anti-fall-off component includes a reinforcing rib, a reinforcing rib fixedly installed on the outside of the main rib, a fixed rib fixedly installed on the top of the reinforcing rib, a main rib fixedly installed on the outside of the fixed rib, an installation frame fixedly installed on the inner wall of the reinforcing rib, and a fixing plate fixedly installed on one side of the installation frame.

[0007] As a further description of the above technical solution:

[0008] A mounting plate is fixedly installed on the top of the fixed plate, and both the mounting plate and the fixed plate are threadedly connected to hooks through threaded holes provided inside them.

[0009] As a further description of the above technical solution:

[0010] The hook has threads on its exterior, and both the fixed plate and the hook are threadedly connected to threaded rods through threaded holes inside.

[0011] As a further description of the above technical solution:

[0012] The positioning component includes a clamping frame, and the main rib is externally threaded with the clamping frame.

[0013] As a further description of the above technical solution:

[0014] A counterweight is fixedly installed at the bottom of the clamping frame, and two clamping frames are symmetrically arranged about the transverse central axis of the counterweight.

[0015] As a further description of the above technical solution:

[0016] The clamping frame and another clamping frame are both threadedly connected by bolts through threaded holes provided inside them, and the clamping frame is threadedly connected by hooks through threaded holes provided inside it.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0018] 1. In this utility model, by incorporating an anti-fall-off component, when the equipment is used to lift the reinforcing cage, a fixed reinforcement bar is placed above the connection point between the first reinforcing bar and each main reinforcement bar, along with a connecting frame and fixing plate on the first reinforcing bar. This increases the load-bearing capacity of the first reinforcing bar during the lifting and lowering process of the reinforcing cage via the hook, ensuring the integrity, stability, and safety of the reinforcing cage. It also prevents the reinforcing bar from breaking if only one end is stressed during lifting and lowering. When inserting the steel casing into the bridge pile foundation, first unscrew the threaded rod, then unscrew the hook from the mounting plate, fixing plate, and clamping frame, and then remove the hook for future use. This design not only enables the first reinforcing bar to withstand the load during the lifting and lowering of the rebar cage via the hook, ensuring the integrity, stability, and safety of the rebar cage, but also facilitates the disassembly and installation of the hook for future use, avoiding resource waste and reducing construction costs. Furthermore, it is simple, convenient, and highly practical.

[0019] 2. In this utility model, by setting a positioning component, during the use of the device, if it is necessary to lengthen the reinforcing cage after the hook is rotated out, first rotate the bolt to loosen the clamping frame and lift it up, then insert the bottom end of the main reinforcement bar in the next reinforcing cage into another threaded hole in the clamping frame, and then rotate the bolt to clamp and fix the bottom end of the main reinforcement bar in the reinforcing cage, thereby facilitating the welding of the main reinforcement bar in the next reinforcing cage to the top end of the main reinforcement bar in the reinforcing cage inserted into the steel casing of the bridge pile foundation. The counterweight block is set here to increase the weight of the reinforcing cage, which to a certain extent prevents the reinforcing cage from floating. It realizes the function of facilitating the welding of the top end of the main reinforcement bar in the next reinforcing cage to the top end of the main reinforcement bar in the reinforcing cage inserted into the steel casing of the bridge pile foundation. It is simple and convenient to use and has strong practicality. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of an anti-loosening device for lifting and lowering a steel cage according to the present invention.

[0021] Figure 2 This is an exploded three-dimensional structural diagram of an anti-loosening device for lifting and lowering a steel cage, as proposed in this utility model.

[0022] Figure 3 This is a three-dimensional structural diagram of the positioning component in the anti-loosening device for lifting and lowering a steel cage proposed in this utility model;

[0023] Figure 4 This is an exploded three-dimensional structural diagram of the anti-loosening component in the anti-loosening device for lifting and lowering a steel cage proposed in this utility model.

[0024] Legend:

[0025] 1. Main reinforcement; 2. Spiral stirrups; 3. Anti-fall-off component; 31. Mounting bracket; 32. Hook; 33. Mounting plate; 34. Threaded rod; 35. Fixed reinforcement; 36. Reinforcing rib; 37. Fixing plate; 4. Positioning component; 41. Counterweight; 42. Bolt; 43. Clamping frame. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1 - Figure 4This utility model provides a technical solution: a device to prevent loosening during the lifting and lowering of a steel cage, including a spiral hoop 2, a main bar 1 fixedly installed on the inner wall of the spiral hoop 2, a threaded surface on the outside of the main bar 1, an anti-loosening component 3 on the outside of the main bar 1, and a positioning component 4 above the anti-loosening component 3.

[0028] The anti-fall-off component 3 includes a reinforcing rib 36. The reinforcing rib 36 is fixedly installed on the outside of the main rib 1. A fixed rib 35 is fixedly installed on the top of the reinforcing rib 36. The main rib 1 is fixedly installed on the outside of the fixed rib 35. An installation frame 31 is fixedly installed on the inner wall of the reinforcing rib 36. A fixing plate 37 is fixedly installed on one side of the installation frame 31. An installation plate 33 is fixedly installed on the top of the fixing plate 37. The installation plate 33 and the fixing plate 37 are both threadedly connected to a hook 32 through a threaded hole provided inside. The hook 32 is threaded on the outside. The fixing plate 37 and the hook 32 are both threadedly connected to a threaded rod 34 through a threaded hole provided inside.

[0029] The specific implementation method is as follows: When it is necessary to lift the steel cage, a fixed bar 35 is placed above the connection point of the first reinforcing bar 36 and each main bar 1, and a connecting frame and fixing plate 37 are placed on the first reinforcing bar 36. This increases the load that the first reinforcing bar 36 can bear during the lifting and lowering of the steel cage by the hook 32, ensuring the integrity, stability and safety of the steel cage. It avoids the situation where only one end of the reinforcing bar 36 is stressed during the lifting and lowering of the steel cage, which could lead to the breakage of the reinforcing bar 36. When most of the steel cage is inserted into the steel casing of the bridge pile foundation, the threaded rod 34 is turned out first, and then the hook 32 is turned out from the mounting plate 33, fixing plate 37 and clamping frame 43, and then the hook 32 is taken out for easy use next time.

[0030] The positioning component 4 includes a clamping frame 43. The main rib 1 is externally threaded to the clamping frame 43. A counterweight 41 is fixedly installed at the bottom of the clamping frame 43. There are two clamping frames 43 symmetrically arranged about the transverse central axis of the counterweight 41. Both the clamping frame 43 and the other clamping frame 43 are threadedly connected to bolts 42 through threaded holes provided inside them. The clamping frame 43 is threadedly connected to a hook 32 through threaded holes provided inside it.

[0031] The specific implementation method is as follows: After the hook 32 is turned out, if it is necessary to lengthen the steel cage, first turn the bolt 42 to loosen the clamping frame 43 and lift it up. Then insert the bottom end of the main bar 1 in the next steel cage into another threaded hole in the clamping frame 43. After that, turn the bolt 42 to clamp and fix the bottom end of the main bar 1 in the steel cage, so as to facilitate the welding of the main bar 1 in the next steel cage to the top end of the main bar 1 in the steel cage inserted into the steel casing of the bridge pile foundation. The counterweight 41 is set here to increase the weight of the steel cage and to a certain extent prevent the steel cage from floating.

[0032] Working principle: When the reinforcing cage needs to be lifted, by placing a fixed reinforcing bar 35 above the connection point between the first reinforcing bar 36 and each main reinforcing bar 1, and by using the connecting frame and fixing plate 37 on the first reinforcing bar 36, the load that the first reinforcing bar 36 can bear is increased during the lifting and lowering process of the reinforcing cage by the hook 32. This ensures the integrity, stability and safety of the reinforcing cage, and avoids the situation where only one end of the reinforcing bar 36 is stressed during the lifting and lowering process, which could lead to the breakage of the reinforcing bar 36. When most of the reinforcing cage is inserted into the steel casing of the bridge pile foundation, the threaded rod 34 is turned out first, and then the hook 32 is removed from the mounting plate 33. The fixed plate 37 and the clamping frame 43 are rotated out, and the hook 32 is taken out for easy use next time. If it is necessary to lengthen the steel cage, first turn the bolt 42 to loosen the clamping frame 43 and lift it up. Then insert the bottom end of the main bar 1 in the next steel cage into another threaded hole in the clamping frame 43. Then turn the bolt 42 to clamp and fix the bottom end of the main bar 1 in the steel cage, so as to facilitate the welding of the main bar 1 in the next steel cage to the top end of the main bar 1 in the steel cage inserted into the steel casing of the bridge pile foundation. The counterweight 41 is set here to increase the weight of the steel cage and to a certain extent prevent the steel cage from floating.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for preventing loosening during the lifting and lowering of a steel cage, comprising spiral stirrups (2), characterized in that, The inner wall of the spiral stirrup (2) is fixedly installed with a main bar (1), the outside of the main bar (1) is provided with a thread, the outside of the main bar (1) is provided with an anti-fall-off component (3), and a positioning component (4) is provided above the anti-fall-off component (3). The anti-fall-off component (3) includes a reinforcing rib (36). The reinforcing rib (36) is fixedly installed on the outside of the main rib (1). A fixed rib (35) is fixedly installed on the top of the reinforcing rib (36). The main rib (1) is fixedly installed on the outside of the fixed rib (35). An installation frame (31) is fixedly installed on the inner wall of the reinforcing rib (36). A fixing plate (37) is fixedly installed on one side of the installation frame (31).

2. The anti-loosening device for lifting and lowering a reinforcing cage according to claim 1, characterized in that, The top of the fixed plate (37) is fixedly installed with an installation plate (33), and both the installation plate (33) and the fixed plate (37) are threadedly connected to hooks (32) through threaded holes provided inside them.

3. The anti-loosening device for lifting and lowering a reinforcing cage according to claim 2, characterized in that, The hook (32) is provided with threads on the outside, and the fixed plate (37) and the hook (32) are both threadedly connected to the threaded rod (34) through the threaded hole provided inside.

4. The anti-loosening device for lifting and lowering a reinforcing cage according to claim 3, characterized in that, The positioning component (4) includes a clamping frame (43), and the main rib (1) is externally threaded to the clamping frame (43).

5. The anti-loosening device for lifting and lowering a reinforcing cage according to claim 4, characterized in that, The bottom of the clamping frame (43) is fixedly installed with a counterweight (41), and the clamping frame (43) has two counterweights symmetrically arranged about the transverse central axis of the counterweight (41).

6. The anti-loosening device for lifting and lowering a reinforcing cage according to claim 5, characterized in that, The clamping frame (43) and another clamping frame (43) are both threadedly connected to bolts (42) through threaded holes provided inside them, and the clamping frame (43) is threadedly connected to hooks (32) through threaded holes provided inside it.

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