Auxiliary device for breaking pile head of cast-in-place pile

Abstract

The utility model discloses an auxiliary device for breaking a pile head of a cast-in-place pile. The auxiliary device comprises a sleeve, a top end sealing plug and a rubber sealing cone, the casing pipe is arranged on a reinforcement cage main reinforcement in a sleeving mode, the rubber sealing cone is assembled at the bottom end of the casing pipe, and the top end sealing plug is assembled at the top end of the casing pipe. The rubber sealing cone comprises two semi-cone bodies which are connected with each other; first through holes and second through holes are formed in the two ends of the semi-cones, and the corresponding first through holes of the two semi-cones are arranged oppositely; the direct contact between concrete and the main reinforcement of the reinforcement cage is isolated through the sleeve, so that the concrete frictional resistance during pile head breaking is reduced, the construction efficiency is effectively improved, and the labor intensity is reduced; the top end sealing plug is assembled at the top end of the sleeve and used for sealing the upper portion of the sleeve and preventing the sleeve from floating upwards. The rubber sealing cone is assembled at the bottom end of the sleeve, so that the rising resistance of concrete is reduced, the cleanliness of the interior of the sleeve is improved, and concrete or other materials are prevented from entering the interior of the sleeve; and the structure is simple, cyclic utilization can be achieved, and the construction cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of cast-in-place pile construction, in particular to a cast-in-place pile head breaking auxiliary device. Background Art

[0002] In highway bridge construction, concrete cast-in-place piles have become an important structural measure to improve the bearing capacity of foundations due to their mature construction technology, diverse machinery, and suitability for various geological conditions and construction environments. However, according to relevant specifications, when pouring concrete, over-pouring is usually required, that is, the over-pouring length of concrete is not less than 0.5m to ensure the strength of the concrete at the top of the pile. This part of the pile head concrete that is higher than the design elevation of the pile top needs to be chiseled off before the subsequent construction process. This step is called "breaking the pile head."

[0003] Traditional pile head breaking operations mainly rely on manual work using pneumatic picks, electric hammers and other tools. This method is not only labor-intensive and inefficient, but also easily causes deformation and damage to the cast-in-place pile reinforcement, seriously affecting the progress of the project and increasing construction costs. In addition, in the process of using pneumatic picks or electric hammers to break up the concrete and separate the reinforcement from the concrete, the pre-embedded reinforcement at the pile head often twists and breaks. Summary of the invention

[0004] The utility model provides a device which can quickly chisel the pile head of a cast-in-place pile. The cast-in-place pile head breaking auxiliary device can reduce the labor intensity of workers, improve the efficiency of breaking the pile head, and reduce the damage to the cast-in-place pile reinforcement, thereby ensuring the construction quality and progress.

[0005] The technical solution of the utility model is as follows: an auxiliary device for breaking the pile head of a cast-in-place pile, comprising a sleeve, a top sealing plug and a rubber sealing cone; the sleeve is sleeved on the main reinforcement of the steel cage, the rubber sealing cone is assembled at the bottom end of the sleeve, and the top sealing plug is assembled at the top end of the sleeve; the rubber sealing cone comprises two connected half cones; a first through hole and a second through hole are arranged at both ends of the half cone, and the corresponding first through holes of the two half cones are arranged relatively.

[0006] Preferably, a rubber ring is installed at the connection of the two first through holes.

[0007] Preferably, the diameter of the first through hole is larger than that of the second through hole, the diameter of the first through hole matches the diameter of the sleeve, and the diameter of the second through hole matches the diameter of the main reinforcement of the steel cage.

[0008] Preferably, the bottom end of the sleeve is equipped with a mounting piece, and the semi-cone is installed in the mounting piece.

[0009] Preferably, a first groove for embedding the rubber ring is provided at the connection between the two semi-cones.

[0010] Preferably, the top sealing plug is shaped like an inverted triangular funnel, and the upper end of the top sealing plug is flush with the top end of the sleeve.

[0011] Preferably, the upper end of the top sealing plug is provided with a second groove, and a rubber ring is installed in the second groove.

[0012] Preferably, a through hole is provided at the lower end of the top sealing plug for the main reinforcement of the reinforcement cage to pass through.

[0013] Preferably, the mounting piece is provided with fixing holes for the main reinforcement of the reinforcement cage to pass through.

[0014] Preferably, the mounting piece and the sleeve are an integrally formed structure, and the mounting piece is in an inverted V shape.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The invention discloses an auxiliary device for breaking the pile head of a cast-in-place pile. The device isolates the direct contact between concrete and the main reinforcement of a steel cage through a casing, reduces the concrete friction resistance when breaking the pile head, effectively improves the construction efficiency, and reduces the labor intensity. The top sealing plug is assembled at the top of the casing to seal the upper part of the casing to prevent the casing from floating up. The rubber sealing cone is assembled at the bottom of the casing to reduce the resistance of the concrete rising, and improve the cleanliness of the inside of the casing to prevent concrete or other materials from entering the inside of the casing. The rubber sealing cone comprises two connected half cones, has a simple structure, can be recycled, and reduces the construction cost.

[0017] Furthermore, the rubber ring has a certain elasticity and buffering capacity due to its material properties. During the pile head breaking process, the rubber ring can absorb part of the impact and vibration, reducing damage to the steel cage and surrounding structures. The rubber ring provides an additional sealing effect at the first through-hole connection of the two semi-cones to ensure that concrete or other materials will not be inside the casing during the cast-in-place pile construction process.

[0018] Furthermore, the diameter of the first through hole matches the diameter of the casing, ensuring that the rubber sealing cone can be tightly fitted at the bottom of the casing to form a tight sealing interface. This can prevent concrete from flowing into the casing during the pouring of the cast-in-place pile, keeping the steel cage clean and intact; the diameter of the second through hole matches the diameter of the main reinforcement of the steel cage, allowing the rubber sealing cone to tightly surround the main reinforcement of the steel cage, ensuring that the concrete will not directly contact the steel cage during the pouring process, thereby protecting the steel cage from direct impact and erosion by the concrete.

[0019] Furthermore, the mounting piece provides a stable platform for firmly mounting the rubber sealing cone on the bottom end of the casing. This stable connection ensures that the rubber sealing cone will not fall off or shift during the pouring and breaking of the pile head.

[0020] Furthermore, the first groove provides a clear installation position for the rubber ring, making the installation process simpler and faster. The construction personnel only need to embed the rubber ring into the groove to ensure a tight connection between the two semi-cones.

[0021] Furthermore, the inverted triangular funnel-shaped design allows the top sealing plug to be easily inserted into the top of the sleeve and fits tightly with the sleeve. At the same time, since the upper end is flush with the sleeve, it is more convenient to remove without the need for special tools or techniques.

[0022] Furthermore, the embedding of the rubber ring not only enhances the sealing performance, but also increases the connection stability between the top sealing plug and the casing, which helps to prevent the top sealing plug from loosening or falling off due to external impact or vibration during the pouring or breaking of the pile head.

[0023] Furthermore, the through hole design at the lower end of the top sealing plug not only adapts to the structural characteristics of the steel cage and maintains the sealing performance, but also facilitates installation and disassembly operations and improves construction efficiency.

[0024] Furthermore, the fixing holes ensure that the main reinforcement of the steel cage can accurately pass through the mounting parts, thereby achieving accurate positioning and fixing of the steel cage. The structural stability of the entire auxiliary device is enhanced. This helps to resist external impact and vibration during the pouring process and maintain the integrity and safety of the device.

[0025] Furthermore, the one-piece design eliminates the gap between the mounting piece and the casing, thereby improving the structural stability of the entire auxiliary device. During the pouring and pile head breaking process, this structure can better resist external impact and vibration, maintaining the integrity and safety of the device. The inverted V-shaped design enables the semi-cone to be tightly connected to the mounting piece, enhancing the stability of the device.

[0026] Other features and advantages of the present invention will be disclosed in detail in the following specific implementations and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The utility model is further described below in conjunction with the accompanying drawings:

[0028] Figure 1 This is a schematic diagram of the installation of a cast-in-place pile head breaking auxiliary device of the utility model;

[0029] Figure 2 It is a structural schematic diagram of the sleeve of the utility model;

[0030] Figure 3 It is a structural schematic diagram of the rubber ring of the utility model;

[0031] Figure 4 It is a structural schematic diagram of the top sealing plug of the utility model;

[0032] Figure 5 It is a structural schematic diagram of the rubber sealing cone of the utility model;

[0033] Figure 6 It is a schematic structural diagram of a semi-cone of the utility model;

[0034] The following are the descriptions of the reference numerals:

[0035] Casing 1, top sealing plug 2, rubber sealing cone 3, main reinforcement of steel cage 4, semi-cone 31, first through hole 311, second through hole 312, rubber ring 5, mounting part 11, first groove 32, second groove 21, through hole 22, fixing hole 111. DETAILED DESCRIPTION

[0036] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0037] In the following description, terms such as "inside", "outside", "up", "down", "left", "right", etc. that indicate directions or positional relationships are only used to facilitate the description of the embodiments and simplify the description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction. Therefore, it should not be understood as a limitation on the present invention.

[0038] like Figures 1 to 6 As shown, an auxiliary device for breaking the pile head of a cast-in-place pile comprises a casing 1, a top sealing plug 2 and a rubber sealing cone 3; the rubber sealing cone 3 is assembled at the bottom end of the casing 1, and the rubber sealing cone 3 comprises two connected half cones 31; a first through hole 311 and a second through hole 312 are provided at both ends of the half cone 31, and the first through holes 311 corresponding to the two half cones 31 are arranged opposite to each other, so as to reduce the resistance of concrete rising and seal the casing 1, thereby improving the cleanliness of the inside of the casing.

[0039] The diameter of the first through hole 311 is larger than that of the second through hole 312. The diameter of the first through hole 311 matches the diameter of the sleeve 1, and the diameter of the second through hole 312 matches the diameter of the main reinforcement 4 of the steel cage. A rubber ring 5 is installed at the connection of the two first through holes 311. A first groove 32 for embedding the rubber ring 5 is provided at the connection of the two semi-cones 31. In addition to providing sealing and buffering effects, the rubber ring 5 can also help fix and connect the two semi-cones 31. To a certain extent, it ensures that the two semi-cones 31 maintain a stable connection state during use and are not easy to loosen or fall off.

[0040] The top sealing plug 2 is assembled at the top of the casing 1. The top sealing plug 2 is in the shape of an inverted triangular funnel, which is convenient for controlling the floating of the casing 1. The upper end of the top sealing plug 2 is flush with the top of the casing 1. The upper end of the top sealing plug 2 is provided with a second groove 21, and a rubber ring 5 is installed in the second groove 21. The lower end of the top sealing plug 2 is provided with a through hole 22 for the main reinforcement 4 of the steel cage to pass through, which is convenient for the disassembly and installation of the top sealing plug 2, and is closely connected with the main reinforcement 4 of the steel cage, thereby improving the sealing performance of the device.

[0041] The sleeve 1 is sleeved on the main reinforcement 4 of the steel cage, and the bottom end of the sleeve 1 is equipped with a mounting piece 11, and the semi-cone 31 is installed in the mounting piece 11; the mounting piece 11 is in an inverted V shape, and the inverted V shape matches the semi-cone 31, and can be tightly connected together, thereby improving the stability of the device connection; the mounting piece 11 is provided with a fixing hole 111 for the main reinforcement 4 of the steel cage to pass through. The mounting piece 11 and the sleeve 1 are an integrally formed structure, and the setting of the mounting piece 11 facilitates a tight and firm connection with the bottom rubber sealing tank.

[0042] Working steps:

[0043] First, install the auxiliary device for breaking the pile head of the cast-in-place pile, and apply a release agent on the outside of the casing to facilitate subsequent demoulding; install the rubber sealing cone 3 0.5m away from the top of the steel cage, and put the casing 1 on the main reinforcement 4 of the steel cage to ensure that the casing 1 and the main reinforcement 4 of the steel cage fit tightly. The rubber sealing cone 3 is connected to the bottom end of the casing 1 to ensure that the rubber sealing cone 3 fits tightly with the bottom of the casing 1. Install the top sealing plug 2 at the top of the casing 1 to close the casing.

[0044] Next, cast-in-place pile construction is performed, and concrete is poured around the steel cage to form cast-in-place piles. Due to the presence of the casing 1 and the rubber sealing cone 3, concrete will not enter the casing 1, thereby protecting the integrity of the steel cage.

[0045] Then, after the bored pile is poured with concrete and reaches the initial setting state, the pile head needs to be broken, the top sealing plug 2 is removed, the casing 1 is rotated and pulled out, and finally the pile head is pulled out with the help of a splitter and a crane. Due to the presence of the rubber sealing cone 3, a good sealing effect can be maintained during the breaking process to prevent concrete fragments from splashing or scattering.

[0046] Finally, cleaning and recycling are carried out. After the pile head is broken, the remaining concrete fragments and other debris are cleaned up. The casing 1 and the top sealing plug 2 are disassembled and recycled for next use.

[0047] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes but is not limited to the contents described in the drawings and the above specific implementation. Any modification that does not deviate from the functional and structural principles of the utility model will be included in the scope of the claims.

Claims

1. A pile head breaking auxiliary device for a bored pile, characterized in that: The invention comprises a sleeve (1), a top sealing plug (2) and a rubber sealing cone (3); the sleeve (1) is sleeved on the main reinforcement (4) of the steel cage, the rubber sealing cone (3) is mounted on the bottom end of the sleeve (1), and the top sealing plug (2) is mounted on the top end of the sleeve (1); the rubber sealing cone (3) comprises two connected half cones (31); a first through hole (311) and a second through hole (312) are provided at both ends of the half cone (31), and the corresponding first through holes (311) of the two half cones (31) are arranged opposite to each other.

2. The auxiliary device for breaking the pile head of a bored pile according to claim 1, characterized in that: A rubber ring (5) is mounted at the connection between the two first through holes (311).

3. The auxiliary device for breaking the pile head of a bored pile according to claim 2, characterized in that: The diameter of the first through hole (311) is greater than the diameter of the second through hole (312); the diameter of the first through hole (311) matches the diameter of the sleeve (1); and the diameter of the second through hole (312) matches the diameter of the main reinforcement (4) of the reinforcement cage.

4. The auxiliary device for breaking the pile head of a bored pile according to claim 1, characterized in that: The bottom end of the sleeve (1) is equipped with a mounting piece (11), and the semi-cone (31) is mounted in the mounting piece (11).

5. The auxiliary device for breaking the pile head of a bored pile according to claim 1, characterized in that: A first groove (32) for embedding the rubber ring (5) is provided at the connection between the two semi-cones (31).

6. The auxiliary device for breaking the pile head of a bored pile according to claim 1, characterized in that: The top sealing plug (2) is in the shape of an inverted triangular funnel, and the upper end of the top sealing plug (2) is flush with the top end of the sleeve (1).

7. The auxiliary device for breaking the pile head of a bored pile according to claim 1, characterized in that: A second groove (21) is provided at the upper end of the top sealing plug (2), and a rubber ring (5) is installed in the second groove (21).

8. The auxiliary device for breaking the pile head of a bored pile according to claim 1, characterized in that: The lower end of the top sealing plug (2) is provided with a through hole (22) for the main reinforcement bar (4) of the reinforcement cage to pass through.

9. The auxiliary device for breaking the pile head of a bored pile according to claim 4, characterized in that: The mounting piece (11) is provided with a fixing hole (111) for the main reinforcement bars (4) of the reinforcement cage to pass through.

10. The auxiliary device for breaking the pile head of a bored pile according to claim 4, characterized in that: The mounting piece (11) and the sleeve (1) are an integrally formed structure, and the mounting piece (11) is in an inverted V-shape.

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